Replace old PostODBC driver with new one...

This one is based on an older PostODBC driver, rewritten and maintained by
InsightDist(?)

src/interfaces/odbc/bind.c

@@ -0,0 +1,340 @@
+
+/* Module:          bind.c
+ *
+ * Description:     This module contains routines related to binding 
+ *                  columns and parameters.
+ *
+ * Classes:         BindInfoClass, ParameterInfoClass
+ *
+ * API functions:   SQLBindParameter, SQLBindCol, SQLDescribeParam, SQLNumParams,
+ *                  SQLParamOptions(NI)
+ *
+ * Comments:        See "notice.txt" for copyright and license information.
+ *
+ */
+#include "bind.h"
+#include "environ.h"
+#include "statement.h"
+#include "qresult.h"
+#include "pgtypes.h"
+#include <stdlib.h>
+#include <malloc.h>
+#include <sql.h>
+#include <sqlext.h>
+
+//      Bind parameters on a statement handle
+
+RETCODE SQL_API SQLBindParameter(
+        HSTMT      hstmt,
+        UWORD      ipar,
+        SWORD      fParamType,
+        SWORD      fCType,
+        SWORD      fSqlType,
+        UDWORD     cbColDef,
+        SWORD      ibScale,
+        PTR        rgbValue,
+        SDWORD     cbValueMax,
+        SDWORD FAR *pcbValue)
+{
+StatementClass *stmt = (StatementClass *) hstmt;
+
+	if( ! stmt)
+		return SQL_INVALID_HANDLE;
+
+	if(stmt->parameters_allocated < ipar) {
+		ParameterInfoClass *old_parameters;
+		int i, old_parameters_allocated;
+
+		old_parameters = stmt->parameters;
+		old_parameters_allocated = stmt->parameters_allocated;
+
+		stmt->parameters = (ParameterInfoClass *) malloc(sizeof(ParameterInfoClass)*(ipar));
+		if ( ! stmt->parameters) {
+			stmt->errornumber = STMT_NO_MEMORY_ERROR;
+			stmt->errormsg = "Could not allocate memory for statement parameters";
+			return SQL_ERROR;
+		}
+
+		stmt->parameters_allocated = ipar;
+
+		// copy the old parameters over
+		for(i = 0; i < old_parameters_allocated; i++) {
+		// a structure copy should work
+			stmt->parameters[i] = old_parameters[i];
+		}
+
+		// get rid of the old parameters, if there were any
+		if(old_parameters)
+			free(old_parameters);
+
+		// zero out the newly allocated parameters (in case they skipped some,
+		// so we don't accidentally try to use them later)
+		for(; i < stmt->parameters_allocated; i++) {
+			stmt->parameters[i].buflen = 0;
+			stmt->parameters[i].buffer = 0;
+			stmt->parameters[i].used = 0;
+			stmt->parameters[i].paramType = 0;
+			stmt->parameters[i].CType = 0;
+			stmt->parameters[i].SQLType = 0;
+			stmt->parameters[i].precision = 0;
+			stmt->parameters[i].scale = 0;
+			stmt->parameters[i].data_at_exec = FALSE;
+			stmt->parameters[i].EXEC_used = NULL;
+			stmt->parameters[i].EXEC_buffer = NULL;
+		}
+	}
+
+	ipar--;		/* use zero based column numbers for the below part */
+
+	// store the given info
+	stmt->parameters[ipar].buflen = cbValueMax;
+	stmt->parameters[ipar].buffer = rgbValue;
+	stmt->parameters[ipar].used = pcbValue;
+	stmt->parameters[ipar].paramType = fParamType;
+	stmt->parameters[ipar].CType = fCType;
+	stmt->parameters[ipar].SQLType = fSqlType;
+	stmt->parameters[ipar].precision = cbColDef;
+	stmt->parameters[ipar].scale = ibScale;
+
+	/*	If rebinding a parameter that had data-at-exec stuff in it,
+		then free that stuff
+	*/
+	if (stmt->parameters[ipar].EXEC_used) {
+		free(stmt->parameters[ipar].EXEC_used);
+		stmt->parameters[ipar].EXEC_used = NULL;
+	}
+
+	if (stmt->parameters[ipar].EXEC_buffer) {
+		free(stmt->parameters[ipar].EXEC_buffer);
+		stmt->parameters[ipar].EXEC_buffer = NULL;
+	}
+
+	if (pcbValue && *pcbValue <= SQL_LEN_DATA_AT_EXEC_OFFSET)
+		stmt->parameters[ipar].data_at_exec = TRUE;
+	else
+		stmt->parameters[ipar].data_at_exec = FALSE;
+
+
+	return SQL_SUCCESS;
+}
+
+//      -       -       -       -       -       -       -       -       -
+
+//      Associate a user-supplied buffer with a database column.
+RETCODE SQL_API SQLBindCol(
+        HSTMT      hstmt,
+        UWORD      icol,
+        SWORD      fCType,
+        PTR        rgbValue,
+        SDWORD     cbValueMax,
+        SDWORD FAR *pcbValue)
+{
+StatementClass *stmt = (StatementClass *) hstmt;
+Int2 numcols;
+    
+mylog("**** SQLBindCol: stmt = %u, icol = %d\n", stmt, icol);
+
+	if ( ! stmt)
+		return SQL_INVALID_HANDLE;
+
+	if (icol < 1) {
+		/* currently we do not support bookmarks */
+		stmt->errormsg = "Bookmarks are not currently supported.";
+		stmt->errornumber = STMT_NOT_IMPLEMENTED_ERROR;
+		return SQL_ERROR;
+	}
+
+	icol--;		/* use zero based col numbers */
+
+	SC_clear_error(stmt);
+    
+	if( ! stmt->result) {
+		stmt->errormsg = "Can't bind columns with a NULL query result structure.";
+		stmt->errornumber = STMT_SEQUENCE_ERROR;
+		return SQL_ERROR;
+	}
+
+	if( stmt->status == STMT_EXECUTING) {
+		stmt->errormsg = "Can't bind columns while statement is still executing.";
+		stmt->errornumber = STMT_SEQUENCE_ERROR;
+		return SQL_ERROR;
+	}
+
+	numcols = QR_NumResultCols(stmt->result);
+
+	mylog("SQLBindCol: numcols = %d\n", numcols);
+
+	if (icol >= numcols) {
+		stmt->errornumber = STMT_COLNUM_ERROR;
+		stmt->errormsg = "Column number too big";
+		return SQL_ERROR;
+	}
+
+	if ( ! stmt->bindings) {
+		stmt->errormsg = "Bindings were not allocated properly.";
+		stmt->errornumber = STMT_SEQUENCE_ERROR;
+		return SQL_ERROR;
+	}
+
+	if ((cbValueMax == 0) || (rgbValue == NULL)) {
+		/* we have to unbind the column */
+		stmt->bindings[icol].buflen = 0;
+		stmt->bindings[icol].buffer = NULL;
+		stmt->bindings[icol].used =   NULL;
+		stmt->bindings[icol].returntype = SQL_C_CHAR;
+	} else {
+		/* ok, bind that column */
+		stmt->bindings[icol].buflen     = cbValueMax;
+		stmt->bindings[icol].buffer     = rgbValue;
+		stmt->bindings[icol].used       = pcbValue;
+		stmt->bindings[icol].returntype = fCType;
+	}
+
+	return SQL_SUCCESS;
+}
+
+//      -       -       -       -       -       -       -       -       -
+
+//      Returns the description of a parameter marker.
+
+RETCODE SQL_API SQLDescribeParam(
+        HSTMT      hstmt,
+        UWORD      ipar,
+        SWORD  FAR *pfSqlType,
+        UDWORD FAR *pcbColDef,
+        SWORD  FAR *pibScale,
+        SWORD  FAR *pfNullable)
+{
+StatementClass *stmt = (StatementClass *) hstmt;
+
+	if( ! stmt)
+		return SQL_INVALID_HANDLE;
+
+	if( (ipar < 1) || (ipar > stmt->parameters_allocated) ) {
+		stmt->errormsg = "Invalid parameter number for SQLDescribeParam.";
+		stmt->errornumber = STMT_BAD_PARAMETER_NUMBER_ERROR;
+		return SQL_ERROR;
+	}
+
+	ipar--;
+
+	if(pfSqlType)
+		*pfSqlType = stmt->parameters[ipar].SQLType;
+
+	if(pcbColDef)
+		*pcbColDef = stmt->parameters[ipar].precision;
+
+	if(pibScale)
+		*pibScale = stmt->parameters[ipar].scale;
+
+	if(pfNullable)
+		*pfNullable = pgtype_nullable(stmt->parameters[ipar].paramType);
+
+	return SQL_SUCCESS;
+}
+
+//      -       -       -       -       -       -       -       -       -
+
+//      Sets multiple values (arrays) for the set of parameter markers.
+
+RETCODE SQL_API SQLParamOptions(
+        HSTMT      hstmt,
+        UDWORD     crow,
+        UDWORD FAR *pirow)
+{
+	return SQL_ERROR;
+}
+
+//      -       -       -       -       -       -       -       -       -
+
+//      Returns the number of parameter markers.
+
+RETCODE SQL_API SQLNumParams(
+        HSTMT      hstmt,
+        SWORD  FAR *pcpar)
+{
+StatementClass *stmt = (StatementClass *) hstmt;
+unsigned int i;
+
+	// I guess this is the number of actual parameter markers
+	// in the statement, not the number of parameters that are bound.
+	// why does this have to be driver-specific?
+
+	if(!stmt)
+		return SQL_INVALID_HANDLE;
+
+	if(!stmt->statement) {
+		// no statement has been allocated
+		*pcpar = 0;
+		stmt->errormsg = "SQLNumParams called with no statement ready.";
+		stmt->errornumber = STMT_SEQUENCE_ERROR;
+		return SQL_ERROR;
+	} else {
+		*pcpar = 0;
+		for(i=0; i < strlen(stmt->statement); i++) {
+			if(stmt->statement[i] == '?')
+				(*pcpar)++;
+		}
+
+		return SQL_SUCCESS;
+	}
+}
+
+/********************************************************************
+ *   Bindings Implementation
+ */
+BindInfoClass *
+create_empty_bindings(int num_columns)
+{
+BindInfoClass *new_bindings;
+int i;
+
+	new_bindings = (BindInfoClass *)malloc(num_columns * sizeof(BindInfoClass));
+	if(!new_bindings) {
+		return 0;
+	}
+
+	for(i=0; i < num_columns; i++) {
+		new_bindings[i].buflen = 0;
+		new_bindings[i].buffer = NULL;
+		new_bindings[i].used = NULL;
+	}
+
+	return new_bindings;
+}
+
+void
+extend_bindings(StatementClass *stmt, int num_columns)
+{
+BindInfoClass *new_bindings;
+int i;
+
+	mylog("in extend_bindings\n");
+
+	/* if we have too few, allocate room for more, and copy the old */
+	/* entries into the new structure */
+	if(stmt->bindings_allocated < num_columns) {
+
+		new_bindings = create_empty_bindings(num_columns);
+
+		if(stmt->bindings) {
+			for(i=0; i<stmt->bindings_allocated; i++)
+				new_bindings[i] = stmt->bindings[i];
+
+			free(stmt->bindings);
+		}
+
+		stmt->bindings = new_bindings;		// null indicates error
+
+    } else {
+	/* if we have too many, make sure the extra ones are emptied out */
+	/* so we don't accidentally try to use them for anything */
+		for(i = num_columns; i < stmt->bindings_allocated; i++) {
+			stmt->bindings[i].buflen = 0;
+			stmt->bindings[i].buffer = NULL;
+			stmt->bindings[i].used = NULL;
+		}
+	}
+
+	mylog("exit extend_bindings\n");
+}

src/interfaces/odbc/bind.h

@@ -0,0 +1,45 @@
+
+/* File:            bind.h
+ *
+ * Description:     See "bind.c"
+ *
+ * Comments:        See "notice.txt" for copyright and license information.
+ *
+ */
+
+#ifndef __BIND_H__
+#define __BIND_H__
+
+#include "psqlodbc.h"
+
+/*
+ * BindInfoClass -- stores information about a bound column
+ */
+struct BindInfoClass_ {
+	Int4 buflen;		/* size of buffer */
+	char *buffer;		/* pointer to the buffer */
+	Int4 *used;			/* used space in the buffer (for strings not counting the '\0') */
+	Int2 returntype;	/* kind of conversion to be applied when returning (SQL_C_DEFAULT, SQL_C_CHAR...) */
+};
+
+/*
+ * ParameterInfoClass -- stores information about a bound parameter
+ */
+struct ParameterInfoClass_ {
+	Int4 buflen;
+	char *buffer;
+	Int4 *used;
+	Int2 paramType;
+	Int2 CType;
+	Int2 SQLType;
+	UInt4 precision;
+	Int2 scale;
+	Int4 *EXEC_used;
+	char *EXEC_buffer;
+	char data_at_exec;
+};
+
+BindInfoClass *create_empty_bindings(int num_columns);
+void extend_bindings(StatementClass *stmt, int num_columns);
+
+#endif

src/interfaces/odbc/columninfo.c

@@ -0,0 +1,159 @@
+
+/* Module:          columninfo.c
+ *
+ * Description:     This module contains routines related to 
+ *                  reading and storing the field information from a query.
+ *
+ * Classes:         ColumnInfoClass (Functions prefix: "CI_")
+ *
+ * API functions:   none
+ *
+ * Comments:        See "notice.txt" for copyright and license information.
+ *
+ */
+
+#include "columninfo.h"
+#include "socket.h"
+#include <stdlib.h>
+#include <malloc.h>
+
+ColumnInfoClass *
+CI_Constructor()
+{
+ColumnInfoClass *rv;
+
+	rv = (ColumnInfoClass *) malloc(sizeof(ColumnInfoClass));
+
+	if (rv) {
+		rv->num_fields = 0;
+		rv->name = NULL;
+		rv->adtid = NULL;
+		rv->adtsize = NULL;
+	}
+
+	return rv;
+}
+
+void
+CI_Destructor(ColumnInfoClass *self)
+{
+	CI_free_memory(self);
+
+	free(self);
+}
+
+/*  Read in field descriptions.
+    If self is not null, then also store the information.
+	If self is null, then just read, don't store.
+*/
+char
+CI_read_fields(ColumnInfoClass *self, SocketClass *sock)
+{
+Int2 lf;
+int new_num_fields;
+Oid new_adtid;
+Int2 new_adtsize;
+char new_field_name[MAX_MESSAGE_LEN+1];
+
+
+	/* at first read in the number of fields that are in the query */
+	new_num_fields = (Int2) SOCK_get_int(sock, sizeof(Int2));
+
+	mylog("num_fields = %d\n", new_num_fields);
+
+	if (self) { 	/* according to that allocate memory */
+		CI_set_num_fields(self, new_num_fields);
+	}
+
+	/* now read in the descriptions */
+	for(lf = 0; lf < new_num_fields; lf++) {
+
+		SOCK_get_string(sock, new_field_name, MAX_MESSAGE_LEN);
+		new_adtid = (Oid) SOCK_get_int(sock, 4);
+		new_adtsize = (Int2) SOCK_get_int(sock, 2);
+
+		mylog("CI_read_fields: fieldname='%s', adtid=%d, adtsize=%d\n", new_field_name, new_adtid, new_adtsize);
+
+		if (self)
+			CI_set_field_info(self, lf, new_field_name, new_adtid, new_adtsize);
+	}
+
+	return (SOCK_get_errcode(sock) == 0);
+}
+
+
+
+void
+CI_free_memory(ColumnInfoClass *self)
+{
+register Int2 lf;
+int num_fields = self->num_fields;
+
+	for (lf = 0; lf < num_fields; lf++) {
+		if( self->name[lf])
+			free (self->name[lf]);
+	}
+
+	/*	Safe to call even if null */
+	free(self->name);
+	free(self->adtid);
+	free(self->adtsize);
+}
+
+void
+CI_set_num_fields(ColumnInfoClass *self, int new_num_fields)
+{
+	CI_free_memory(self);	/* always safe to call */
+
+	self->num_fields = new_num_fields;
+
+	self->name = (char **) malloc (sizeof(char *) * self->num_fields);
+	self->adtid = (Oid *) malloc (sizeof(Oid) * self->num_fields);
+	self->adtsize = (Int2 *) malloc (sizeof(Int2) * self->num_fields);
+}
+
+void
+CI_set_field_info(ColumnInfoClass *self, int field_num, char *new_name, 
+                                      Oid new_adtid, Int2 new_adtsize)
+{
+    
+	// check bounds
+	if((field_num < 0) || (field_num >= self->num_fields)) {
+		return;
+	}
+
+	// store the info
+	self->name[field_num] = strdup(new_name);  
+	self->adtid[field_num] = new_adtid;
+	self->adtsize[field_num] = new_adtsize;
+}
+
+char *
+CI_get_fieldname(ColumnInfoClass *self, Int2 which)
+{
+char *rv = NULL;
+    
+	if ( ! self->name)
+		return NULL;
+
+	if ((which >= 0) && (which < self->num_fields))
+		rv = self->name[which];
+
+	return rv;
+}
+
+
+Int2
+CI_get_fieldsize(ColumnInfoClass *self, Int2 which)
+{
+Int2 rv = 0;
+
+	if ( ! self->adtsize)
+		return 0;
+
+	if ((which >= 0) && (which < self->num_fields))
+		rv = self->adtsize[which];
+
+	return rv;
+}
+

src/interfaces/odbc/columninfo.h

@@ -0,0 +1,40 @@
+
+/* File:            columninfo.h
+ *
+ * Description:     See "columninfo.c"
+ *
+ * Comments:        See "notice.txt" for copyright and license information.
+ *
+ */
+
+#ifndef __COLUMNINFO_H__
+#define __COLUMNINFO_H__
+
+#include "psqlodbc.h"
+
+struct ColumnInfoClass_ {
+	Int2	num_fields;
+	char	**name;				/* list of type names */
+	Oid		*adtid;				/* list of type ids */
+	Int2	*adtsize;			/* list type sizes */
+};
+
+#define CI_get_num_fields(self)    (self->num_fields)
+#define CI_get_oid(self, col)		(self->adtid[col])
+
+
+ColumnInfoClass *CI_Constructor();
+void CI_Destructor(ColumnInfoClass *self);
+char CI_read_fields(ColumnInfoClass *self, SocketClass *sock);
+
+/* functions for setting up the fields from within the program, */
+/* without reading from a socket */
+void CI_set_num_fields(ColumnInfoClass *self, int new_num_fields);
+void CI_set_field_info(ColumnInfoClass *self, int field_num, char *new_name, 
+                       Oid new_adtid, Int2 new_adtsize);
+
+char *CI_get_fieldname(ColumnInfoClass *self, Int2 which);
+Int2 CI_get_fieldsize(ColumnInfoClass *self, Int2 which);
+void CI_free_memory(ColumnInfoClass *self);
+
+#endif

src/interfaces/odbc/connection.c

@@ -0,0 +1,979 @@
+
+/* Module:          connection.c
+ *
+ * Description:     This module contains routines related to 
+ *                  connecting to and disconnecting from the Postgres DBMS.
+ *
+ * Classes:         ConnectionClass (Functions prefix: "CC_")
+ *
+ * API functions:   SQLAllocConnect, SQLConnect, SQLDisconnect, SQLFreeConnect,
+ *                  SQLBrowseConnect(NI)
+ *
+ * Comments:        See "notice.txt" for copyright and license information.
+ *
+ */
+
+#include "environ.h"
+#include "connection.h"
+#include "socket.h"
+#include "statement.h"
+#include "qresult.h"
+#include <stdio.h>
+#include <odbcinst.h>
+
+#define STMT_INCREMENT 16  /* how many statement holders to allocate at a time */
+
+extern GLOBAL_VALUES globals;
+
+
+RETCODE SQL_API SQLAllocConnect(
+                                HENV     henv,
+                                HDBC FAR *phdbc)
+{
+EnvironmentClass *env = (EnvironmentClass *)henv;
+ConnectionClass *conn;
+
+
+	conn = CC_Constructor();
+	mylog("**** SQLAllocConnect: henv = %u, conn = %u\n", henv, conn);
+
+    if( ! conn) {
+        env->errormsg = "Couldn't allocate memory for Connection object.";
+        env->errornumber = ENV_ALLOC_ERROR;
+		*phdbc = SQL_NULL_HDBC;
+        return SQL_ERROR;
+    }
+
+    if ( ! EN_add_connection(env, conn)) {
+        env->errormsg = "Maximum number of connections exceeded.";
+        env->errornumber = ENV_ALLOC_ERROR;
+        CC_Destructor(conn);
+		*phdbc = SQL_NULL_HDBC;
+        return SQL_ERROR;
+    }
+
+	*phdbc = (HDBC) conn;
+
+    return SQL_SUCCESS;
+}
+
+
+//      -       -       -       -       -       -       -       -       -
+
+RETCODE SQL_API SQLConnect(
+                           HDBC      hdbc,
+                           UCHAR FAR *szDSN,
+                           SWORD     cbDSN,
+                           UCHAR FAR *szUID,
+                           SWORD     cbUID,
+                           UCHAR FAR *szAuthStr,
+                           SWORD     cbAuthStr)
+{
+ConnectionClass *conn = (ConnectionClass *) hdbc;
+
+	if ( ! conn) 
+		return SQL_INVALID_HANDLE;
+
+	make_string(szDSN, cbDSN, conn->connInfo.dsn);
+
+	/*	get the values for the DSN from the registry */
+	CC_DSN_info(conn, CONN_OVERWRITE);
+	
+	/*	override values from DSN info with UID and authStr(pwd) 
+		This only occurs if the values are actually there.
+	*/
+	make_string(szUID, cbUID, conn->connInfo.username);
+	make_string(szAuthStr, cbAuthStr, conn->connInfo.password);
+
+	/* fill in any defaults */
+	CC_set_defaults(conn);
+
+	qlog("conn = %u, SQLConnect(DSN='%s', UID='%s', PWD='%s')\n", conn->connInfo.dsn, conn->connInfo.username, conn->connInfo.password);
+
+	if ( CC_connect(conn, FALSE) <= 0)
+		//	Error messages are filled in
+		return SQL_ERROR;
+
+	return SQL_SUCCESS;
+}
+
+//      -       -       -       -       -       -       -       -       -
+
+RETCODE SQL_API SQLBrowseConnect(
+        HDBC      hdbc,
+        UCHAR FAR *szConnStrIn,
+        SWORD     cbConnStrIn,
+        UCHAR FAR *szConnStrOut,
+        SWORD     cbConnStrOutMax,
+        SWORD FAR *pcbConnStrOut)
+{
+	return SQL_SUCCESS;
+}
+
+//      -       -       -       -       -       -       -       -       -
+
+/* Drop any hstmts open on hdbc and disconnect from database */
+RETCODE SQL_API SQLDisconnect(
+        HDBC      hdbc)
+{
+ConnectionClass *conn = (ConnectionClass *) hdbc;
+
+	mylog("**** in SQLDisconnect\n");
+
+	if ( ! conn) 
+		return SQL_INVALID_HANDLE;
+
+	qlog("conn=%u, SQLDisconnect\n", conn);
+
+	if (conn->status == CONN_EXECUTING) {
+		conn->errornumber = CONN_IN_USE;
+		conn->errormsg = "A transaction is currently being executed";
+		return SQL_ERROR;
+	}
+
+	mylog("SQLDisconnect: about to CC_cleanup\n");
+
+	/*  Close the connection and free statements */
+	CC_cleanup(conn);
+
+	mylog("SQLDisconnect: done CC_cleanup\n");
+	mylog("exit SQLDisconnect\n");
+
+	return SQL_SUCCESS;
+}
+
+
+//      -       -       -       -       -       -       -       -       -
+
+RETCODE SQL_API SQLFreeConnect(
+        HDBC      hdbc)
+{
+ConnectionClass *conn = (ConnectionClass *) hdbc;
+
+	mylog("**** in SQLFreeConnect: hdbc=%u\n", hdbc);
+
+	if ( ! conn) 
+		return SQL_INVALID_HANDLE;
+
+	/*  Remove the connection from the environment */
+	if ( ! EN_remove_connection(conn->henv, conn)) {
+		conn->errornumber = CONN_IN_USE;
+		conn->errormsg = "A transaction is currently being executed";
+		return SQL_ERROR;
+	}
+
+	CC_Destructor(conn);
+
+	mylog("exit SQLFreeConnect\n");
+
+	return SQL_SUCCESS;
+}
+
+
+/*
+*
+*       IMPLEMENTATION CONNECTION CLASS
+*
+*/
+
+ConnectionClass
+*CC_Constructor()
+{
+ConnectionClass *rv;
+
+    rv = (ConnectionClass *)malloc(sizeof(ConnectionClass));
+
+    if (rv != NULL) {
+
+		rv->henv = NULL; /* not yet associated with an environment */
+
+        rv->errormsg = NULL;
+        rv->errornumber = 0;
+		rv->errormsg_created = FALSE;
+
+        rv->status = CONN_NOT_CONNECTED;
+        rv->transact_status = CONN_IN_AUTOCOMMIT; // autocommit by default
+
+		memset(&rv->connInfo, 0, sizeof(ConnInfo));
+
+		rv->sock = SOCK_Constructor();
+		if ( ! rv->sock)
+			return NULL;
+
+		rv->stmts = (StatementClass **) malloc( sizeof(StatementClass *) * STMT_INCREMENT);
+		if ( ! rv->stmts)
+			return NULL;
+		memset(rv->stmts, 0, sizeof(StatementClass *) * STMT_INCREMENT);
+
+		rv->num_stmts = STMT_INCREMENT;
+
+    } 
+    return rv;
+}
+
+
+char
+CC_Destructor(ConnectionClass *self)
+{
+
+	mylog("enter CC_Destructor, self=%u\n", self);
+
+	if (self->status == CONN_EXECUTING)
+		return 0;
+
+	CC_cleanup(self);   /* cleanup socket and statements */
+
+	mylog("after CC_Cleanup\n");
+
+	/*  Free up statement holders */
+	if (self->stmts) {
+		free(self->stmts);
+		self->stmts = NULL;
+	}
+	mylog("after free statement holders\n");
+
+	free(self);
+
+	mylog("exit CC_Destructor\n");
+
+	return 1;
+}
+
+void 
+CC_clear_error(ConnectionClass *self)
+{
+	self->errornumber = 0; 
+	self->errormsg = NULL; 
+	self->errormsg_created = FALSE;
+}
+
+//	Used to cancel a transaction
+//	We are almost always in the middle of a transaction.
+char
+CC_abort(ConnectionClass *self)
+{
+QResultClass *res;
+
+	if ( CC_is_in_trans(self)) {
+		res = NULL;
+
+		mylog("CC_abort:  sending ABORT!\n");
+
+		res = CC_send_query(self, "ABORT", NULL, NULL);
+		CC_set_no_trans(self);
+
+		if (res != NULL)
+			QR_Destructor(res);
+		else
+			return FALSE;
+
+	}
+
+	return TRUE;
+}
+
+/* This is called by SQLDisconnect also */
+char
+CC_cleanup(ConnectionClass *self)
+{
+int i;
+StatementClass *stmt;
+
+	if (self->status == CONN_EXECUTING)
+		return FALSE;
+
+	mylog("in CC_Cleanup, self=%u\n", self);
+
+	// Cancel an ongoing transaction
+	// We are always in the middle of a transaction,
+	// even if we are in auto commit.
+	if (self->sock)
+		CC_abort(self);
+
+	mylog("after CC_abort\n");
+
+	/*  This actually closes the connection to the dbase */
+	if (self->sock) {
+	    SOCK_Destructor(self->sock);
+		self->sock = NULL;
+	}
+
+	mylog("after SOCK destructor\n");
+
+	/*  Free all the stmts on this connection */
+	for (i = 0; i < self->num_stmts; i++) {
+		stmt = self->stmts[i];
+		if (stmt) {
+
+			stmt->hdbc = NULL;	/* prevent any more dbase interactions */
+
+			SC_Destructor(stmt);
+
+			self->stmts[i] = NULL;
+		}
+	}
+	mylog("exit CC_Cleanup\n");
+	return TRUE;
+}
+
+void
+CC_set_defaults(ConnectionClass *self)
+{
+ConnInfo *ci = &(self->connInfo);
+
+	if (ci->port[0] == '\0')
+		strcpy(ci->port, DEFAULT_PORT);
+
+	if (ci->readonly[0] == '\0')
+		strcpy(ci->readonly, DEFAULT_READONLY);
+}
+
+void 
+CC_DSN_info(ConnectionClass *self, char overwrite)
+{
+ConnInfo *ci = &(self->connInfo);
+char *DSN = ci->dsn;
+
+	//	If a driver keyword was present, then dont use a DSN and return.
+	//	If DSN is null and no driver, then use the default datasource.
+	if ( DSN[0] == '\0') {
+		if ( ci->driver[0] != '\0')
+			return;
+		else
+			strcpy(DSN, "DEFAULT");
+	}
+
+	//	Proceed with getting info for the given DSN.
+	if ( ci->server[0] == '\0' || overwrite)
+		SQLGetPrivateProfileString(DSN, INI_SERVER, "", ci->server, sizeof(ci->server), ODBC_INI);
+
+	if ( ci->database[0] == '\0' || overwrite)
+	    SQLGetPrivateProfileString(DSN, INI_DATABASE, "", ci->database, sizeof(ci->database), ODBC_INI);
+
+	if ( ci->username[0] == '\0' || overwrite)
+		SQLGetPrivateProfileString(DSN, INI_USER, "", ci->username, sizeof(ci->username), ODBC_INI);
+
+	if ( ci->password[0] == '\0' || overwrite)
+		SQLGetPrivateProfileString(DSN, INI_PASSWORD, "", ci->password, sizeof(ci->password), ODBC_INI);
+
+	if ( ci->port[0] == '\0' || overwrite)
+		SQLGetPrivateProfileString(DSN, INI_PORT, "", ci->port, sizeof(ci->port), ODBC_INI);
+
+	if ( ci->readonly[0] == '\0' || overwrite)
+		SQLGetPrivateProfileString(DSN, INI_READONLY, "", ci->readonly, sizeof(ci->readonly), ODBC_INI);
+
+	if ( ci->protocol[0] == '\0' || overwrite)
+		SQLGetPrivateProfileString(DSN, INI_PROTOCOL, "", ci->protocol, sizeof(ci->protocol), ODBC_INI);
+
+	if ( ci->conn_settings[0] == '\0' || overwrite)
+		SQLGetPrivateProfileString(DSN, INI_CONNSETTINGS, "", ci->conn_settings, sizeof(ci->conn_settings), ODBC_INI);
+
+	qlog("conn=%u, DSN info(DSN='%s',server='%s',dbase='%s',user='%s',passwd='%s',port='%s',readonly='%s',protocol='%s',conn_settings='%s')\n", 
+		self, DSN, 
+		ci->server,
+		ci->database,
+		ci->username,
+		ci->password,
+		ci->port,
+		ci->readonly,
+		ci->protocol,
+		ci->conn_settings);
+}
+
+
+char 
+CC_connect(ConnectionClass *self, char do_password)
+{
+StartupPacket sp;
+StartupPacket6_2 sp62;
+QResultClass *res;
+SocketClass *sock;
+ConnInfo *ci = &(self->connInfo);
+int areq = -1;
+int beresp;
+char msgbuffer[ERROR_MSG_LENGTH]; 
+char salt[2];
+
+	if ( do_password)
+
+		sock = self->sock;		/* already connected, just authenticate */
+
+	else {
+
+		if (self->status != CONN_NOT_CONNECTED) {
+			self->errormsg = "Already connected.";
+			self->errornumber = CONN_OPENDB_ERROR;
+			return 0;
+		}
+
+		if ( ci->server[0] == '\0' || ci->port[0] == '\0' || ci->database[0] == '\0') {
+			self->errornumber = CONN_INIREAD_ERROR;
+			self->errormsg = "Missing server name, port, or database name in call to CC_connect.";
+			return 0;
+		}
+
+		mylog("CC_connect(): DSN = '%s', server = '%s', port = '%s', database = '%s', username = '%s', password='%s'\n",
+				ci->dsn, ci->server, ci->port, ci->database, ci->username, ci->password);
+
+		/* If the socket was closed for some reason (like a SQLDisconnect, but no SQLFreeConnect
+			then create a socket now.
+		*/
+		if ( ! self->sock) {
+			self->sock = SOCK_Constructor();
+			if ( ! self->sock) {
+				 self->errornumber = CONNECTION_SERVER_NOT_REACHED;
+				 self->errormsg = "Could not open a socket to the server";
+				 return 0;
+			}
+		}
+
+		sock = self->sock;
+
+		mylog("connecting to the server socket...\n");
+
+		SOCK_connect_to(sock, (short) atoi(ci->port), ci->server);
+		if (SOCK_get_errcode(sock) != 0) {
+			mylog("connection to the server socket failed.\n");
+			self->errornumber = CONNECTION_SERVER_NOT_REACHED;
+			self->errormsg = "Could not connect to the server";
+			return 0;
+		}
+		mylog("connection to the server socket succeeded.\n");
+
+		if ( PROTOCOL_62(ci)) {
+			sock->reverse = TRUE;		/* make put_int and get_int work for 6.2 */
+
+			memset(&sp62, 0, sizeof(StartupPacket6_2));
+			SOCK_put_int(sock, htonl(4+sizeof(StartupPacket6_2)), 4);
+			sp62.authtype = htonl(NO_AUTHENTICATION);
+			strncpy(sp62.database, ci->database, PATH_SIZE);
+			strncpy(sp62.user, ci->username, NAMEDATALEN);
+			SOCK_put_n_char(sock, (char *) &sp62, sizeof(StartupPacket6_2));
+			SOCK_flush_output(sock);
+		}
+		else {
+			memset(&sp, 0, sizeof(StartupPacket));
+
+			mylog("sizeof startup packet = %d\n", sizeof(StartupPacket));
+
+			// Send length of Authentication Block
+			SOCK_put_int(sock, 4+sizeof(StartupPacket), 4); 
+
+			sp.protoVersion = (ProtocolVersion) htonl(PG_PROTOCOL_LATEST);
+			strncpy(sp.database, ci->database, SM_DATABASE);
+			strncpy(sp.user, ci->username, SM_USER);
+
+			SOCK_put_n_char(sock, (char *) &sp, sizeof(StartupPacket));
+			SOCK_flush_output(sock);
+		}
+
+		mylog("sent the authentication block.\n");
+
+		if (sock->errornumber != 0) {
+			mylog("couldn't send the authentication block properly.\n");
+			self->errornumber = CONN_INVALID_AUTHENTICATION;
+			self->errormsg = "Sending the authentication packet failed";
+			return 0;
+		}
+		mylog("sent the authentication block successfully.\n");
+	}
+
+
+	mylog("gonna do authentication\n");
+
+
+	// ***************************************************
+	//	Now get the authentication request from backend
+	// ***************************************************
+
+	if ( ! PROTOCOL_62(ci))	do {
+
+		if (do_password)
+			beresp = 'R';
+		else
+			beresp = SOCK_get_char(sock);
+
+		switch(beresp) {
+		case 'E':
+			mylog("auth got 'E'\n");
+
+			SOCK_get_string(sock, msgbuffer, ERROR_MSG_LENGTH);
+			self->errornumber = CONN_INVALID_AUTHENTICATION;
+			self->errormsg = msgbuffer;
+			qlog("ERROR from backend during authentication: '%s'\n", self->errormsg);
+			return 0;
+		case 'R':
+
+			if (do_password) {
+				mylog("in 'R' do_password\n");
+				areq = AUTH_REQ_PASSWORD;
+				do_password = FALSE;
+			}
+			else {
+				mylog("auth got 'R'\n");
+
+				areq = SOCK_get_int(sock, 4);
+				if (areq == AUTH_REQ_CRYPT)
+					SOCK_get_n_char(sock, salt, 2);
+
+				mylog("areq = %d\n", areq);
+			}
+			switch(areq) {
+			case AUTH_REQ_OK:
+				break;
+
+			case AUTH_REQ_KRB4:
+				self->errormsg = "Kerberos 4 authentication not supported";
+				self->errornumber = CONN_AUTH_TYPE_UNSUPPORTED;
+				return 0;
+
+			case AUTH_REQ_KRB5:
+				self->errormsg = "Kerberos 5 authentication not supported";
+				self->errornumber = CONN_AUTH_TYPE_UNSUPPORTED;
+				return 0;
+
+			case AUTH_REQ_PASSWORD:
+				mylog("in AUTH_REQ_PASSWORD\n");
+
+				if (ci->password[0] == '\0') {
+					self->errornumber = CONNECTION_NEED_PASSWORD;
+					self->errormsg = "A password is required for this connection.";
+					return -1;	/* need password */
+				}
+
+				mylog("past need password\n");
+
+				SOCK_put_int(sock, 4+strlen(ci->password)+1, 4);
+				SOCK_put_n_char(sock, ci->password, strlen(ci->password) + 1);
+				SOCK_flush_output(sock);
+
+				mylog("past flush\n");
+				break;
+
+			case AUTH_REQ_CRYPT:
+				self->errormsg = "Password crypt authentication not supported";
+				self->errornumber = CONN_AUTH_TYPE_UNSUPPORTED;
+				return 0;
+
+			default:
+				self->errormsg = "Unknown authentication type";
+				self->errornumber = CONN_AUTH_TYPE_UNSUPPORTED;
+				return 0;
+			}
+			break;
+		default:
+			self->errormsg = "Unexpected protocol character during authentication";
+			self->errornumber = CONN_INVALID_AUTHENTICATION;
+			return 0;
+		}
+
+	} while (areq != AUTH_REQ_OK);		
+
+
+	CC_clear_error(self);	/* clear any password error */
+
+	/* send an empty query in order to find out whether the specified */
+	/* database really exists on the server machine */
+	mylog("sending an empty query...\n");
+
+	res = CC_send_query(self, " ", NULL, NULL);
+	if ( res == NULL || QR_get_status(res) != PGRES_EMPTY_QUERY) {
+		mylog("got no result from the empty query.  (probably database does not exist)\n");
+		self->errornumber = CONNECTION_NO_SUCH_DATABASE;
+		self->errormsg = "The database does not exist on the server\nor user authentication failed.";
+		if (res != NULL)
+			QR_Destructor(res);
+		return 0;
+	}
+	if (res)
+		QR_Destructor(res);
+
+	mylog("empty query seems to be OK.\n");
+
+
+	/**********************************************/
+	/*******   Send any initial settings  *********/
+	/**********************************************/
+
+	CC_send_settings(self);
+
+
+	CC_clear_error(self);	/* clear any initial command errors */
+	self->status = CONN_CONNECTED;
+
+	return 1;
+
+}
+
+char
+CC_add_statement(ConnectionClass *self, StatementClass *stmt)
+{
+int i;
+
+	mylog("CC_add_statement: self=%u, stmt=%u\n", self, stmt);
+
+	for (i = 0; i < self->num_stmts; i++) {
+		if ( ! self->stmts[i]) {
+			stmt->hdbc = self;
+			self->stmts[i] = stmt;
+			return TRUE;
+		}
+	}
+
+	/* no more room -- allocate more memory */
+	self->stmts = (StatementClass **) realloc( self->stmts, sizeof(StatementClass *) * (STMT_INCREMENT + self->num_stmts));
+	if ( ! self->stmts)
+		return FALSE;
+
+	memset(&self->stmts[self->num_stmts], 0, sizeof(StatementClass *) * STMT_INCREMENT);
+
+	stmt->hdbc = self;
+	self->stmts[self->num_stmts] = stmt;
+
+	self->num_stmts += STMT_INCREMENT;
+
+	return TRUE;
+}
+
+char 
+CC_remove_statement(ConnectionClass *self, StatementClass *stmt)
+{
+int i;
+
+	for (i = 0; i < self->num_stmts; i++) {
+		if (self->stmts[i] == stmt && stmt->status != STMT_EXECUTING) {
+			self->stmts[i] = NULL;
+			return TRUE;
+		}
+	}
+
+	return FALSE;
+}
+
+/*	Create a more informative error message by concatenating the connection
+	error message with its socket error message.
+*/
+char *
+CC_create_errormsg(ConnectionClass *self)
+{
+SocketClass *sock = self->sock;
+int pos;
+static char msg[4096];
+
+	mylog("enter CC_create_errormsg\n");
+
+	msg[0] = '\0';
+
+	if (self->errormsg)
+		strcpy(msg, self->errormsg);
+
+	mylog("msg = '%s'\n", msg);
+
+	if (sock && sock->errormsg && sock->errormsg[0] != '\0') {
+		pos = strlen(msg);
+		sprintf(&msg[pos], ";\n%s", sock->errormsg);
+	}
+
+	mylog("exit CC_create_errormsg\n");
+	return msg;
+}
+
+
+char 
+CC_get_error(ConnectionClass *self, int *number, char **message)
+{
+int rv;
+
+	mylog("enter CC_get_error\n");
+
+	//	Create a very informative errormsg if it hasn't been done yet.
+	if ( ! self->errormsg_created) {
+		self->errormsg = CC_create_errormsg(self);
+		self->errormsg_created = TRUE;
+	}
+
+	if (self->errornumber) {
+		*number = self->errornumber;
+		*message = self->errormsg;
+	}
+	rv = (self->errornumber != 0);
+
+	self->errornumber = 0;		// clear the error
+
+	mylog("exit CC_get_error\n");
+
+	return rv;
+}
+
+
+/*	The "result_in" is only used by QR_next_tuple() to fetch another group of rows into
+	the same existing QResultClass (this occurs when the tuple cache is depleted and
+	needs to be re-filled).
+
+	The "cursor" is used by SQLExecute to associate a statement handle as the cursor name
+	(i.e., C3326857) for SQL select statements.  This cursor is then used in future 
+	'declare cursor C3326857 for ...' and 'fetch 100 in C3326857' statements.
+*/
+QResultClass *
+CC_send_query(ConnectionClass *self, char *query, QResultClass *result_in, char *cursor)
+{
+QResultClass *res = NULL;
+char id, swallow;
+SocketClass *sock = self->sock;
+static char msgbuffer[MAX_MESSAGE_LEN+1];
+char cmdbuffer[MAX_MESSAGE_LEN+1];	// QR_set_command() dups this string so dont need static
+
+
+	mylog("send_query(): conn=%u, query='%s'\n", self, query);
+	qlog("conn=%u, query='%s'\n", self, query);
+
+	// Indicate that we are sending a query to the backend
+	if(strlen(query) > MAX_MESSAGE_LEN-2) {
+		self->errornumber = CONNECTION_MSG_TOO_LONG;
+		self->errormsg = "Query string is too long";
+		return NULL;
+	}
+
+	if ((NULL == query) || (query[0] == '\0'))
+		return NULL;
+
+	if (SOCK_get_errcode(sock) != 0) {
+		self->errornumber = CONNECTION_COULD_NOT_SEND;
+		self->errormsg = "Could not send Query to backend";
+		CC_set_no_trans(self);
+		return NULL;
+	}
+
+	SOCK_put_char(sock, 'Q');
+	if (SOCK_get_errcode(sock) != 0) {
+		self->errornumber = CONNECTION_COULD_NOT_SEND;
+		self->errormsg = "Could not send Query to backend";
+		CC_set_no_trans(self);
+		return NULL;
+	}
+
+	SOCK_put_string(sock, query);
+	SOCK_flush_output(sock);
+
+	if (SOCK_get_errcode(sock) != 0) {
+		self->errornumber = CONNECTION_COULD_NOT_SEND;
+		self->errormsg = "Could not send Query to backend";
+		CC_set_no_trans(self);
+		return NULL;
+	}
+
+	mylog("send_query: done sending query\n");
+
+	while(1) {
+		/* what type of message is comming now ? */
+		id = SOCK_get_char(sock);
+
+		if ((SOCK_get_errcode(sock) != 0) || (id == EOF)) {
+			self->errornumber = CONNECTION_NO_RESPONSE;
+			self->errormsg = "No response from the backend";
+			if (res)
+				QR_Destructor(res);
+
+			mylog("send_query: 'id' - %s\n", self->errormsg);
+			CC_set_no_trans(self);
+			return NULL;
+		}
+
+		mylog("send_query: got id = '%c'\n", id);
+
+		switch (id) {
+		case 'A' : /* Asynchronous Messages are ignored */
+			(void)SOCK_get_int(sock, 4); /* id of notification */
+			SOCK_get_string(sock, msgbuffer, MAX_MESSAGE_LEN);
+			/* name of the relation the message comes from */
+			break;
+		case 'C' : /* portal query command, no tuples returned */
+			/* read in the return message from the backend */
+			SOCK_get_string(sock, cmdbuffer, MAX_MESSAGE_LEN);
+			if (SOCK_get_errcode(sock) != 0) {
+				self->errornumber = CONNECTION_NO_RESPONSE;
+				self->errormsg = "No response from backend while receiving a portal query command";
+				mylog("send_query: 'C' - %s\n", self->errormsg);
+				CC_set_no_trans(self);
+				return NULL;
+			} else {
+
+				char clear = 0;
+
+				mylog("send_query: ok - 'C' - %s\n", cmdbuffer);
+
+				if (res == NULL)	/* allow for "show" style notices */
+					res = QR_Constructor();
+
+				mylog("send_query: setting cmdbuffer = '%s'\n", cmdbuffer);
+
+				/*	Only save the first command */
+				QR_set_status(res, PGRES_COMMAND_OK);
+				QR_set_command(res, cmdbuffer);
+
+				/* (Quotation from the original comments)
+					since backend may produze more than one result for some commands
+					we need to poll until clear
+					so we send an empty query, and keep reading out of the pipe
+					until an 'I' is received
+				*/
+
+
+				SOCK_put_string(sock, "Q ");
+				SOCK_flush_output(sock);
+				while(!clear) {
+					SOCK_get_string(sock, cmdbuffer, ERROR_MSG_LENGTH);
+					mylog("send_query: read command '%s'\n", cmdbuffer);
+					clear = (cmdbuffer[0] == 'I');
+				}
+
+				mylog("send_query: returning res = %u\n", res);
+				return res;
+			}
+		case 'N' : /* NOTICE: */
+			SOCK_get_string(sock, cmdbuffer, ERROR_MSG_LENGTH);
+
+			res = QR_Constructor();
+			QR_set_status(res, PGRES_NONFATAL_ERROR);
+			QR_set_notice(res, cmdbuffer);	/* will dup this string */
+
+			mylog("~~~ NOTICE: '%s'\n", cmdbuffer);
+			qlog("NOTICE from backend during send_query: '%s'\n", cmdbuffer);
+
+			continue;		// dont return a result -- continue reading
+
+		case 'I' : /* The server sends an empty query */
+				/* There is a closing '\0' following the 'I', so we eat it */
+			swallow = SOCK_get_char(sock);
+			if ((swallow != '\0') || SOCK_get_errcode(sock) != 0) {
+				self->errornumber = CONNECTION_BACKEND_CRAZY;
+				self->errormsg = "Unexpected protocol character from backend";
+				res = QR_Constructor();
+				QR_set_status(res, PGRES_FATAL_ERROR);
+				return res;
+			} else {
+				/* We return the empty query */
+				res = QR_Constructor();
+				QR_set_status(res, PGRES_EMPTY_QUERY);
+				return res;
+			}
+			break;
+		case 'E' : 
+			SOCK_get_string(sock, msgbuffer, ERROR_MSG_LENGTH);
+
+			/*	Remove a newline */
+			if (msgbuffer[0] != '\0' && msgbuffer[strlen(msgbuffer)-1] == '\n')
+				msgbuffer[strlen(msgbuffer)-1] = '\0';
+
+			self->errormsg = msgbuffer;
+
+			mylog("send_query: 'E' - %s\n", self->errormsg);
+			qlog("ERROR from backend during send_query: '%s'\n", self->errormsg);
+
+			if ( ! strncmp(self->errormsg, "FATAL", 5)) {
+				self->errornumber = CONNECTION_SERVER_REPORTED_ERROR;
+				CC_set_no_trans(self);
+			}
+			else
+				self->errornumber = CONNECTION_SERVER_REPORTED_WARNING;
+
+			return NULL;
+
+		case 'P' : /* get the Portal name */
+			SOCK_get_string(sock, msgbuffer, MAX_MESSAGE_LEN);
+			break;
+		case 'T': /* Tuple results start here */
+			if (result_in == NULL) {
+				result_in = QR_Constructor();
+				mylog("send_query: 'T' no result_in: res = %u\n", result_in);
+				if ( ! result_in) {
+					self->errornumber = CONNECTION_COULD_NOT_RECEIVE;
+					self->errormsg = "Could not create result info in send_query.";
+					return NULL;
+				}
+
+				if ( ! QR_fetch_tuples(result_in, self, cursor)) {
+					self->errornumber = CONNECTION_COULD_NOT_RECEIVE;
+					self->errormsg = QR_get_message(result_in);
+					return NULL;
+				}
+			}
+			else {  // next fetch, so reuse an existing result
+				if ( ! QR_fetch_tuples(result_in, NULL, NULL)) {
+					self->errornumber = CONNECTION_COULD_NOT_RECEIVE;
+					self->errormsg = QR_get_message(result_in);
+					return NULL;
+				}
+			}
+
+			return result_in;
+		case 'D': /* Copy in command began successfully */
+			res = QR_Constructor();
+			QR_set_status(res, PGRES_COPY_IN);
+			return res;
+		case 'B': /* Copy out command began successfully */
+			res = QR_Constructor();
+			QR_set_status(res, PGRES_COPY_OUT);
+			return res;
+		default:
+			self->errornumber = CONNECTION_BACKEND_CRAZY;
+			self->errormsg = "Unexpected protocol character from backend";
+			CC_set_no_trans(self);
+
+			mylog("send_query: error - %s\n", self->errormsg);
+			return NULL;
+		}
+	}
+}
+
+char
+CC_send_settings(ConnectionClass *self)
+{
+char ini_query[MAX_MESSAGE_LEN];
+ConnInfo *ci = &(self->connInfo);
+QResultClass *res;
+
+	ini_query[0] = '\0';
+
+	/*	Turn on/off genetic optimizer based on global flag */
+	if (globals.optimizer[0] != '\0')
+		sprintf(ini_query, "set geqo to '%s'", globals.optimizer);
+
+	/*	Global settings */
+	if (globals.conn_settings[0] != '\0')
+		sprintf(&ini_query[strlen(ini_query)], "%s%s", 
+			ini_query[0] != '\0' ? "; " : "",
+			globals.conn_settings);
+
+	/*	Per Datasource settings */
+	if (ci->conn_settings[0] != '\0')
+		sprintf(&ini_query[strlen(ini_query)], "%s%s",
+			ini_query[0] != '\0' ? "; " : "",
+			ci->conn_settings);
+
+	if (ini_query[0] != '\0') {
+		mylog("Sending Initial Connection query: '%s'\n", ini_query);
+
+		res = CC_send_query(self, ini_query, NULL, NULL);
+		if (res && QR_get_status(res) != PGRES_FATAL_ERROR) {
+			mylog("Initial Query response: '%s'\n", QR_get_notice(res));
+		}
+
+		if ( res == NULL || 
+			QR_get_status(res) == PGRES_BAD_RESPONSE ||
+			QR_get_status(res) == PGRES_FATAL_ERROR || 
+			QR_get_status(res) == PGRES_INTERNAL_ERROR) {
+
+			self->errornumber = CONNECTION_COULD_NOT_SEND;
+			self->errormsg = "Error sending ConnSettings";
+			if (res)
+				QR_Destructor(res);
+			return 0;
+		}
+
+		if (res)
+			QR_Destructor(res);
+	}
+	return TRUE;
+}
+

src/interfaces/odbc/connection.h

@@ -0,0 +1,183 @@
+
+/* File:            connection.h
+ *
+ * Description:     See "connection.c"
+ *
+ * Comments:        See "notice.txt" for copyright and license information.
+ *
+ */
+
+#ifndef __CONNECTION_H__
+#define __CONNECTION_H__
+
+#include <windows.h>
+#include <sql.h>
+#include "psqlodbc.h"
+
+typedef enum {
+    CONN_NOT_CONNECTED,      /* Connection has not been established */
+    CONN_CONNECTED,      /* Connection is up and has been established */
+    CONN_DOWN,            /* Connection is broken */
+    CONN_EXECUTING     /* the connection is currently executing a statement */
+} CONN_Status;
+
+/*	These errors have general sql error state */
+#define CONNECTION_SERVER_NOT_REACHED 1
+#define CONNECTION_MSG_TOO_LONG 3
+#define CONNECTION_COULD_NOT_SEND 4
+#define CONNECTION_NO_SUCH_DATABASE 5
+#define CONNECTION_BACKEND_CRAZY 6
+#define CONNECTION_NO_RESPONSE 7
+#define CONNECTION_SERVER_REPORTED_ERROR 8
+#define CONNECTION_COULD_NOT_RECEIVE 9
+#define CONNECTION_SERVER_REPORTED_WARNING 10
+#define CONNECTION_NEED_PASSWORD 12
+
+/*	These errors correspond to specific SQL states */
+#define CONN_INIREAD_ERROR 1
+#define CONN_OPENDB_ERROR 2
+#define CONN_STMT_ALLOC_ERROR 3
+#define CONN_IN_USE 4 
+#define CONN_UNSUPPORTED_OPTION 5
+/* Used by SetConnectoption to indicate unsupported options */
+#define CONN_INVALID_ARGUMENT_NO 6
+/* SetConnectOption: corresponds to ODBC--"S1009" */
+#define CONN_TRANSACT_IN_PROGRES 7
+#define CONN_NO_MEMORY_ERROR 8
+#define CONN_NOT_IMPLEMENTED_ERROR 9
+#define CONN_INVALID_AUTHENTICATION 10
+#define CONN_AUTH_TYPE_UNSUPPORTED 11
+
+
+/* Conn_status defines */
+#define CONN_IN_AUTOCOMMIT 0x01
+#define CONN_IN_TRANSACTION 0x02
+
+/* AutoCommit functions */
+#define CC_set_autocommit_off(x)	(x->transact_status &= ~CONN_IN_AUTOCOMMIT)
+#define CC_set_autocommit_on(x)		(x->transact_status |= CONN_IN_AUTOCOMMIT)
+#define CC_is_in_autocommit(x)		(x->transact_status & CONN_IN_AUTOCOMMIT)
+
+/* Transaction in/not functions */
+#define CC_set_in_trans(x)	(x->transact_status |= CONN_IN_TRANSACTION)
+#define CC_set_no_trans(x)	(x->transact_status &= ~CONN_IN_TRANSACTION)
+#define CC_is_in_trans(x)	(x->transact_status & CONN_IN_TRANSACTION)
+
+
+/* Authentication types */
+#define AUTH_REQ_OK			0
+#define AUTH_REQ_KRB4		1
+#define AUTH_REQ_KRB5		2
+#define AUTH_REQ_PASSWORD	3
+#define AUTH_REQ_CRYPT		4
+
+/*	Startup Packet sizes */
+#define SM_DATABASE		64
+#define SM_USER			32
+#define SM_OPTIONS		64
+#define SM_UNUSED		64
+#define SM_TTY			64
+
+/*	Old 6.2 protocol defines */
+#define NO_AUTHENTICATION	7
+#define PATH_SIZE			64
+#define ARGV_SIZE			64
+#define NAMEDATALEN			16
+
+typedef unsigned int ProtocolVersion;
+
+#define PG_PROTOCOL(major, minor)	(((major) << 16) | (minor))
+#define PG_PROTOCOL_LATEST		PG_PROTOCOL(1, 0)
+#define PG_PROTOCOL_EARLIEST	PG_PROTOCOL(0, 0)
+
+/*	This startup packet is to support latest Postgres protocol (6.3) */
+typedef struct _StartupPacket
+{
+	ProtocolVersion	protoVersion;
+	char			database[SM_DATABASE];
+	char			user[SM_USER];
+	char			options[SM_OPTIONS];
+	char			unused[SM_UNUSED];
+	char			tty[SM_TTY];
+} StartupPacket;
+
+
+/*	This startup packet is to support pre-Postgres 6.3 protocol */
+typedef struct _StartupPacket6_2
+{
+	unsigned int	authtype;
+	char			database[PATH_SIZE];
+	char			user[NAMEDATALEN];
+	char			options[ARGV_SIZE];
+	char			execfile[ARGV_SIZE];
+	char			tty[PATH_SIZE];
+} StartupPacket6_2;
+
+
+/*	Structure to hold all the connection attributes for a specific
+	connection (used for both registry and file, DSN and DRIVER)
+*/
+typedef struct {
+	char	dsn[MEDIUM_REGISTRY_LEN];
+	char	driver[MEDIUM_REGISTRY_LEN];
+	char	server[MEDIUM_REGISTRY_LEN];
+	char	database[MEDIUM_REGISTRY_LEN];
+	char	username[MEDIUM_REGISTRY_LEN];
+	char	password[MEDIUM_REGISTRY_LEN];
+	char	conn_settings[LARGE_REGISTRY_LEN];
+	char	protocol[SMALL_REGISTRY_LEN];
+	char	port[SMALL_REGISTRY_LEN];
+	char	readonly[SMALL_REGISTRY_LEN];	
+	char	focus_password;
+} ConnInfo;
+
+/*	Macro to determine is the connection using 6.2 protocol? */
+#define PROTOCOL_62(conninfo_)		(strncmp((conninfo_)->protocol, PG62, strlen(PG62)) == 0)
+
+
+/*******	The Connection handle	************/
+struct ConnectionClass_ {
+	HENV			henv;					/* environment this connection was created on */
+	char			*errormsg;
+	int				errornumber;
+	CONN_Status		status;
+	ConnInfo		connInfo;
+	StatementClass	**stmts;
+	int				num_stmts;
+	SocketClass		*sock;
+	char			transact_status;		/* Is a transaction is currently in progress */
+	char			errormsg_created;		/* has an informative error msg been created?  */
+};
+
+
+/* Accessor functions */
+#define CC_get_socket(x)	(x->sock)
+#define CC_get_database(x)	(x->connInfo.database)
+#define CC_get_server(x)	(x->connInfo.server)
+#define CC_get_DSN(x)		(x->connInfo.dsn)
+#define CC_get_username(x)	(x->connInfo.username)
+#define CC_is_readonly(x)	(x->connInfo.readonly[0] == '1')
+
+
+/*  for CC_DSN_info */
+#define CONN_DONT_OVERWRITE		0
+#define CONN_OVERWRITE			1 
+
+
+/*	prototypes */
+ConnectionClass *CC_Constructor();
+char CC_Destructor(ConnectionClass *self);
+char CC_cleanup(ConnectionClass *self);
+char CC_abort(ConnectionClass *self);
+void CC_DSN_info(ConnectionClass *self, char overwrite);
+void CC_set_defaults(ConnectionClass *self);
+char CC_connect(ConnectionClass *self, char do_password);
+char CC_add_statement(ConnectionClass *self, StatementClass *stmt);
+char CC_remove_statement(ConnectionClass *self, StatementClass *stmt);
+char CC_get_error(ConnectionClass *self, int *number, char **message);
+QResultClass *CC_send_query(ConnectionClass *self, char *query, QResultClass *result_in, char *cursor);
+void CC_clear_error(ConnectionClass *self);
+char *CC_create_errormsg(ConnectionClass *self);
+char CC_send_settings(ConnectionClass *self);
+
+#endif

src/interfaces/odbc/convert.c

@@ -0,0 +1,995 @@
+
+/* Module:         convert.c
+ *
+ * Description:	   This module contains routines related to 
+ *                 converting parameters and columns into requested data types.
+ *                 Parameters are converted from their SQL_C data types into
+ *                 the appropriate postgres type.  Columns are converted from
+ *                 their postgres type (SQL type) into the appropriate SQL_C 
+ *                 data type.
+ *
+ * Classes:        n/a
+ *
+ * API functions:  none
+ *
+ * Comments:       See "notice.txt" for copyright and license information.
+ *
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <windows.h>
+#include <sql.h>
+#include <sqlext.h>
+#include <time.h>
+#include <math.h>
+#include "convert.h"
+#include "statement.h"
+#include "bind.h"
+#include "pgtypes.h"
+
+/********		A Guide for date/time/timestamp conversions    **************
+
+			field_type		fCType				Output
+			----------		------				----------
+			PG_TYPE_DATE	SQL_C_DEFAULT		SQL_C_DATE
+			PG_TYPE_DATE	SQL_C_DATE			SQL_C_DATE
+			PG_TYPE_DATE	SQL_C_TIMESTAMP		SQL_C_TIMESTAMP		(time = 0 (midnight))
+			PG_TYPE_TIME	SQL_C_DEFAULT		SQL_C_TIME
+			PG_TYPE_TIME	SQL_C_TIME			SQL_C_TIME
+			PG_TYPE_TIME	SQL_C_TIMESTAMP		SQL_C_TIMESTAMP		(date = current date)
+			PG_TYPE_ABSTIME	SQL_C_DEFAULT		SQL_C_TIMESTAMP
+			PG_TYPE_ABSTIME	SQL_C_DATE			SQL_C_DATE			(time is truncated)
+			PG_TYPE_ABSTIME	SQL_C_TIME			SQL_C_TIME			(date is truncated)
+			PG_TYPE_ABSTIME	SQL_C_TIMESTAMP		SQL_C_TIMESTAMP		
+******************************************************************************/
+
+
+/*	This is called by SQLFetch() */
+int
+copy_and_convert_field_bindinfo(Int4 field_type, void *value, BindInfoClass *bic)
+{
+	return copy_and_convert_field(field_type, value, (Int2)bic->returntype, (PTR)bic->buffer,
+                                (SDWORD)bic->buflen, (SDWORD *)bic->used);
+}
+
+/*	This is called by SQLGetData() */
+int
+copy_and_convert_field(Int4 field_type, void *value, Int2 fCType, PTR rgbValue, SDWORD cbValueMax, SDWORD *pcbValue)
+{
+Int4 len = 0, nf;
+char day[4], mon[4], tz[4];
+SIMPLE_TIME st;
+time_t t = time(NULL);
+struct tm *tim;
+int bool;
+
+
+	memset(&st, 0, sizeof(SIMPLE_TIME));
+
+	/*	Initialize current date */
+	tim = localtime(&t);
+	st.m = tim->tm_mon + 1;
+	st.d = tim->tm_mday;
+	st.y = tim->tm_year + 1900;
+
+	bool = 0;
+
+	mylog("copy_and_convert: field_type = %d, fctype = %d, value = '%s', cbValueMax=%d\n", field_type, fCType, value, cbValueMax);
+    if(value) {
+
+		/********************************************************************
+			First convert any specific postgres types into more
+			useable data.
+
+			NOTE: Conversions from PG char/varchar of a date/time/timestamp 
+			value to SQL_C_DATE,SQL_C_TIME, SQL_C_TIMESTAMP not supported 
+		*********************************************************************/
+		switch(field_type) {
+		/*  $$$ need to add parsing for date/time/timestamp strings in PG_TYPE_CHAR,VARCHAR $$$ */
+		case PG_TYPE_DATE:
+			sscanf(value, "%2d-%2d-%4d", &st.m, &st.d, &st.y);
+			break;
+
+		case PG_TYPE_TIME:
+			sscanf(value, "%2d:%2d:%2d", &st.hh, &st.mm, &st.ss);
+			break;
+
+		case PG_TYPE_ABSTIME:
+		case PG_TYPE_DATETIME:
+			if (strnicmp(value, "invalid", 7) != 0) {
+				nf = sscanf(value, "%3s %3s %2d %2d:%2d:%2d %4d %3s", &day, &mon, &st.d, &st.hh, &st.mm, &st.ss, &st.y, &tz);
+
+				if (nf == 7 || nf == 8) {
+					/* convert month name to month number */
+					st.m = monthToNumber(mon);
+				}
+			} else {	/* The timestamp is invalid so set something conspicuous, like the epoch */
+				t = 0;
+				tim = localtime(&t);
+				st.m = tim->tm_mon + 1;
+				st.d = tim->tm_mday;
+				st.y = tim->tm_year + 1900;
+				st.hh = tim->tm_hour;
+				st.mm = tim->tm_min;
+				st.ss = tim->tm_sec;
+			}
+			break;
+
+		case PG_TYPE_BOOL: {		/* change T/F to 1/0 */
+			char *s = (char *) value;
+			if (s[0] == 'T' || s[0] == 't' || s[0] == '1') 
+				bool = 1;
+			else
+				bool = 0;
+			}
+			break;
+
+		/* This is for internal use by SQLStatistics() */
+		case PG_TYPE_INT28: {
+			// this is an array of eight integers
+			short *short_array = (short *)rgbValue;
+
+			len = 16;
+
+			sscanf(value, "%hd %hd %hd %hd %hd %hd %hd %hd",
+				&short_array[0],
+				&short_array[1],
+				&short_array[2],
+				&short_array[3],
+				&short_array[4],
+				&short_array[5],
+				&short_array[6],
+				&short_array[7]);
+
+			/*  There is no corresponding fCType for this. */
+			if(pcbValue)
+				*pcbValue = len;
+
+			return COPY_OK;		/* dont go any further or the data will be trashed */
+							}
+
+		}
+
+		/*  Change default into something useable */
+		if (fCType == SQL_C_DEFAULT) {
+			fCType = pgtype_to_ctype(field_type);
+
+			mylog("copy_and_convert, SQL_C_DEFAULT: fCType = %d\n", fCType);
+		}
+
+
+        if(fCType == SQL_C_CHAR) {
+
+			/*	Special character formatting as required */
+			switch(field_type) {
+			case PG_TYPE_DATE:
+		        len = 11;
+				if (cbValueMax > len)
+					sprintf((char *)rgbValue, "%.4d-%.2d-%.2d", st.y, st.m, st.d);
+				break;
+
+			case PG_TYPE_TIME:
+				len = 9;
+				if (cbValueMax > len)
+					sprintf((char *)rgbValue, "%.2d:%.2d:%.2d", st.hh, st.mm, st.ss);
+				break;
+
+			case PG_TYPE_ABSTIME:
+			case PG_TYPE_DATETIME:
+				len = 19;
+				if (cbValueMax > len)
+					sprintf((char *) rgbValue, "%.4d-%.2d-%.2d %.2d:%.2d:%.2d", 
+						st.y, st.m, st.d, st.hh, st.mm, st.ss);
+				break;
+
+			case PG_TYPE_BOOL:
+				len = 1;
+				if (cbValueMax > len) {
+					strcpy((char *) rgbValue, bool ? "1" : "0");
+					mylog("PG_TYPE_BOOL: rgbValue = '%s'\n", rgbValue);
+				}
+				break;
+
+			case PG_TYPE_BYTEA:		// convert binary data to hex strings (i.e, 255 = "FF")
+				len = convert_pgbinary_to_char(value, rgbValue, cbValueMax);
+				break;
+
+			default:
+				/* convert linefeeds to carriage-return/linefeed */
+				convert_linefeeds( (char *) value, rgbValue, cbValueMax);
+		        len = strlen(rgbValue);
+
+				mylog("    SQL_C_CHAR, default: len = %d, cbValueMax = %d, rgbValue = '%s'\n", len, cbValueMax, rgbValue);
+				break;
+			}
+
+        } else {
+
+			/*	for SQL_C_CHAR, its probably ok to leave currency symbols in.  But
+				to convert to numeric types, it is necessary to get rid of those.
+			*/
+			if (field_type == PG_TYPE_MONEY)
+				convert_money(value);
+
+			switch(fCType) {
+			case SQL_C_DATE:
+				len = 6;
+				if (cbValueMax >= len) {
+					DATE_STRUCT *ds = (DATE_STRUCT *) rgbValue;
+					ds->year = st.y;
+					ds->month = st.m;
+					ds->day = st.d;
+				}
+				break;
+
+			case SQL_C_TIME:
+				len = 6;
+				if (cbValueMax >= len) {
+					TIME_STRUCT *ts = (TIME_STRUCT *) rgbValue;
+					ts->hour = st.hh;
+					ts->minute = st.mm;
+					ts->second = st.ss;
+				}
+				break;
+
+			case SQL_C_TIMESTAMP:					
+				len = 16;
+				if (cbValueMax >= len) {
+					TIMESTAMP_STRUCT *ts = (TIMESTAMP_STRUCT *) rgbValue;
+					ts->year = st.y;
+					ts->month = st.m;
+					ts->day = st.d;
+					ts->hour = st.hh;
+					ts->minute = st.mm;
+					ts->second = st.ss;
+					ts->fraction = 0;
+				}
+				break;
+
+			case SQL_C_BIT:
+				len = 1;
+				if (cbValueMax >= len || field_type == PG_TYPE_BOOL) {
+					*((UCHAR *)rgbValue) = (UCHAR) bool;
+					mylog("SQL_C_BIT: val = %d, cb = %d, rgb=%d\n", atoi(value), cbValueMax, *((UCHAR *)rgbValue));
+				}
+				break;
+
+			case SQL_C_STINYINT:
+			case SQL_C_TINYINT:
+				len = 1;
+				if (cbValueMax >= len)
+					*((SCHAR *) rgbValue) = atoi(value);
+				break;
+
+			case SQL_C_UTINYINT:
+				len = 1;
+				if (cbValueMax >= len)
+					*((UCHAR *) rgbValue) = atoi(value);
+				break;
+
+			case SQL_C_FLOAT:
+                len = 4;
+                if(cbValueMax >= len)
+                    *((SFLOAT *)rgbValue) = (float) atof(value);
+				break;
+
+			case SQL_C_DOUBLE:
+                len = 8;
+                if(cbValueMax >= len)
+                    *((SDOUBLE *)rgbValue) = atof(value);
+				break;
+
+			case SQL_C_SSHORT:
+			case SQL_C_SHORT:
+				len = 2;
+                if(cbValueMax >= len)
+                    *((SWORD *)rgbValue) = atoi(value);
+                break;
+
+			case SQL_C_USHORT:
+				len = 2;
+                if(cbValueMax >= len)
+                    *((UWORD *)rgbValue) = atoi(value);
+                break;
+
+			case SQL_C_SLONG:
+			case SQL_C_LONG:
+                len = 4;
+                if(cbValueMax >= len)
+                    *((SDWORD *)rgbValue) = atol(value);
+                break;
+
+			case SQL_C_ULONG:
+                len = 4;
+                if(cbValueMax >= len)
+                    *((UDWORD *)rgbValue) = atol(value);
+                break;
+
+			case SQL_C_BINARY:	
+				//	truncate if necessary
+				//	convert octal escapes to bytes
+				len = convert_from_pgbinary(value, rgbValue, cbValueMax);
+				mylog("SQL_C_BINARY: len = %d\n", len);
+				break;
+				
+			default:
+				return COPY_UNSUPPORTED_TYPE;
+			}
+		}
+    } else {
+        /* handle a null just by returning SQL_NULL_DATA in pcbValue, */
+        /* and doing nothing to the buffer.                           */
+        if(pcbValue) {
+            *pcbValue = SQL_NULL_DATA;
+        }
+    }
+
+    // store the length of what was copied, if there's a place for it
+    // unless it was a NULL (in which case it was already set above)
+    if(pcbValue && value)
+        *pcbValue = len;
+
+    if(len > cbValueMax) {
+		mylog("!!! COPY_RESULT_TRUNCATED !!!\n");
+
+		//	Don't return truncated because an application
+		//	(like Access) will try to call GetData again
+		//	to retrieve the rest of the data.  Since we
+		//	are not currently ready for this, and the result
+		//	is an endless loop, we better just silently
+		//	truncate the data.
+        // return COPY_RESULT_TRUNCATED;
+
+		*pcbValue = cbValueMax -1;
+		return COPY_OK;
+
+    } else {
+
+        return COPY_OK;
+    }
+}
+
+/*	This function inserts parameters into an SQL statements.
+	It will also modify a SELECT statement for use with declare/fetch cursors.
+	This function no longer does any dynamic memory allocation!
+*/
+int
+copy_statement_with_parameters(StatementClass *stmt)
+{
+unsigned int opos, npos;
+char param_string[128], tmp[256], cbuf[TEXT_FIELD_SIZE+5];
+int param_number;
+Int2 param_ctype, param_sqltype;
+char *old_statement = stmt->statement;
+char *new_statement = stmt->stmt_with_params;
+SIMPLE_TIME st;
+time_t t = time(NULL);
+struct tm *tim;
+SDWORD FAR *used;
+char *buffer, *buf;
+
+
+	if ( ! old_statement)
+		return SQL_ERROR;
+
+
+	memset(&st, 0, sizeof(SIMPLE_TIME));
+
+	/*	Initialize current date */
+	tim = localtime(&t);
+	st.m = tim->tm_mon + 1;
+	st.d = tim->tm_mday;
+	st.y = tim->tm_year + 1900;
+
+
+
+	//	For selects, prepend a declare cursor to the statement
+	if (stmt->statement_type == STMT_TYPE_SELECT) {
+		sprintf(new_statement, "declare C%u cursor for ", stmt);
+		npos = strlen(new_statement);
+	}
+	else {
+		new_statement[0] = '0';
+		npos = 0;
+	}
+
+    param_number = -1;
+
+    for (opos = 0; opos < strlen(old_statement); opos++) {
+
+		//	Squeeze carriage-returns/linfeed pairs to linefeed only
+		if (old_statement[opos] == '\r' && opos+1<strlen(old_statement) && old_statement[opos+1] == '\n') {
+			continue;
+		}
+
+		//	Handle literals (date, time, timestamp)
+		else if (old_statement[opos] == '{') {
+			char *esc;
+			char *begin = &old_statement[opos + 1];
+			char *end = strchr(begin, '}');
+
+			if ( ! end)
+				continue;
+
+			*end = '\0';
+
+			esc = convert_escape(begin);
+			if (esc) {
+				memcpy(&new_statement[npos], esc, strlen(esc));
+				npos += strlen(esc);
+			}
+
+			opos += end - begin + 2;
+
+			*end = '}';
+
+			continue;
+		}
+
+		else if (old_statement[opos] != '?') {		// a regular character
+			new_statement[npos++] = old_statement[opos];
+			continue;
+		}
+
+		/****************************************************/
+		/*       Its a '?' parameter alright                */
+		/****************************************************/
+
+		param_number++;
+
+	    if (param_number >= stmt->parameters_allocated)
+			break;
+
+		/*	Assign correct buffers based on data at exec param or not */
+		if ( stmt->parameters[param_number].data_at_exec) {
+			used = stmt->parameters[param_number].EXEC_used;
+			buffer = stmt->parameters[param_number].EXEC_buffer;
+		}
+		else {
+			used = stmt->parameters[param_number].used;
+			buffer = stmt->parameters[param_number].buffer;
+		}
+
+		/*	Handle NULL parameter data */
+		if (used && *used == SQL_NULL_DATA) {
+			strcpy(&new_statement[npos], "NULL");
+			npos += 4;
+			continue;
+		}
+
+		/*	If no buffer, and its not null, then what the hell is it? 
+			Just leave it alone then.
+		*/
+		if ( ! buffer) {
+			new_statement[npos++] = '?';
+			continue;
+		}
+
+		param_ctype = stmt->parameters[param_number].CType;
+		param_sqltype = stmt->parameters[param_number].SQLType;
+		
+		mylog("copy_statement_with_params: from(fcType)=%d, to(fSqlType)=%d\n", 
+			param_ctype,
+			param_sqltype);
+		
+		// replace DEFAULT with something we can use
+		if(param_ctype == SQL_C_DEFAULT)
+			param_ctype = sqltype_to_default_ctype(param_sqltype);
+
+		buf = NULL;
+		param_string[0] = '\0';
+		cbuf[0] = '\0';
+
+		
+		/*	Convert input C type to a neutral format */
+		switch(param_ctype) {
+		case SQL_C_BINARY:
+		case SQL_C_CHAR:
+			buf = buffer;
+			break;
+
+		case SQL_C_DOUBLE:
+			sprintf(param_string, "%f", 
+				 *((SDOUBLE *) buffer));
+			break;
+
+		case SQL_C_FLOAT:
+			sprintf(param_string, "%f", 
+				 *((SFLOAT *) buffer));
+			break;
+
+		case SQL_C_SLONG:
+		case SQL_C_LONG:
+			sprintf(param_string, "%ld",
+				*((SDWORD *) buffer));
+			break;
+
+		case SQL_C_SSHORT:
+		case SQL_C_SHORT:
+			sprintf(param_string, "%d",
+				*((SWORD *) buffer));
+			break;
+
+		case SQL_C_STINYINT:
+		case SQL_C_TINYINT:
+			sprintf(param_string, "%d",
+				*((SCHAR *) buffer));
+			break;
+
+		case SQL_C_ULONG:
+			sprintf(param_string, "%lu",
+				*((UDWORD *) buffer));
+			break;
+
+		case SQL_C_USHORT:
+			sprintf(param_string, "%u",
+				*((UWORD *) buffer));
+			break;
+
+		case SQL_C_UTINYINT:
+			sprintf(param_string, "%u",
+				*((UCHAR *) buffer));
+			break;
+
+		case SQL_C_BIT: {
+			int i = *((UCHAR *) buffer);
+			
+			sprintf(param_string, "'%s'", i ? "t" : "f");
+			break;
+						}
+
+		case SQL_C_DATE: {
+			DATE_STRUCT *ds = (DATE_STRUCT *) buffer;
+			st.m = ds->month;
+			st.d = ds->day;
+			st.y = ds->year;
+
+			break;
+						 }
+
+		case SQL_C_TIME: {
+			TIME_STRUCT *ts = (TIME_STRUCT *) buffer;
+			st.hh = ts->hour;
+			st.mm = ts->minute;
+			st.ss = ts->second;
+
+			break;
+						 }
+
+		case SQL_C_TIMESTAMP: {
+			TIMESTAMP_STRUCT *tss = (TIMESTAMP_STRUCT *) buffer;
+			st.m = tss->month;
+			st.d = tss->day;
+			st.y = tss->year;
+			st.hh = tss->hour;
+			st.mm = tss->minute;
+			st.ss = tss->second;
+
+			mylog("m=%d,d=%d,y=%d,hh=%d,mm=%d,ss=%d\n",
+				st.m, st.d, st.y, st.hh, st.mm, st.ss);
+
+			break;
+
+							  }
+		default:
+			// error
+			stmt->errormsg = "Unrecognized C_parameter type in copy_statement_with_parameters";
+			stmt->errornumber = STMT_NOT_IMPLEMENTED_ERROR;
+			new_statement[npos] = '\0';   // just in case
+			return SQL_ERROR;
+		}
+
+		/*	Now that the input data is in a neutral format, convert it to
+			the desired output format (sqltype)
+		*/
+
+		switch(param_sqltype) {
+		case SQL_CHAR:
+		case SQL_VARCHAR:
+		case SQL_LONGVARCHAR:
+
+			new_statement[npos++] = '\'';	/*    Open Quote */
+
+			/* it was a SQL_C_CHAR */
+			if (buf) {
+				convert_returns(buf, &new_statement[npos], used ? *used : SQL_NTS);
+				npos += strlen(&new_statement[npos]);
+			}
+
+			/* it was a numeric type */
+			else if (param_string[0] != '\0') {	
+				strcpy(&new_statement[npos], param_string);
+				npos += strlen(param_string);
+			}
+
+			/* it was date,time,timestamp -- use m,d,y,hh,mm,ss */
+			else {
+				char *buf = convert_time(&st);
+				strcpy(&new_statement[npos], buf);
+				npos += strlen(buf);
+			}
+
+			new_statement[npos++] = '\'';	/*    Close Quote */
+
+			break;
+
+		case SQL_DATE:
+			if (buf && used) {  /* copy char data to time */
+				my_strcpy(cbuf, sizeof(cbuf), buf, *used);
+				parse_datetime(cbuf, &st);
+			}
+
+			sprintf(tmp, "'%.2d-%.2d-%.4d'", st.m, st.d, st.y);
+
+			strcpy(&new_statement[npos], tmp);
+			npos += strlen(tmp);
+			break;
+
+		case SQL_TIME:
+			if (buf && used) {  /* copy char data to time */
+				my_strcpy(cbuf, sizeof(cbuf), buf, *used);
+				parse_datetime(cbuf, &st);
+			}
+
+			sprintf(tmp, "'%.2d:%.2d:%.2d'", st.hh, st.mm, st.ss);
+
+			strcpy(&new_statement[npos], tmp);
+			npos += strlen(tmp);
+			break;
+
+		case SQL_TIMESTAMP: {
+			char *tbuf;
+
+			if (buf && used) {
+				my_strcpy(cbuf, sizeof(cbuf), buf, *used);
+				parse_datetime(cbuf, &st);
+			}
+
+			tbuf = convert_time(&st);
+
+			sprintf(&new_statement[npos], "'%s'", tbuf);
+			npos += strlen(tbuf) + 2;
+
+			break;
+							}
+
+		case SQL_BINARY:
+		case SQL_VARBINARY:
+		case SQL_LONGVARBINARY:		/* non-ascii characters should be converted to octal */
+
+			new_statement[npos++] = '\'';	/*    Open Quote */
+
+			mylog("SQL_LONGVARBINARY: about to call convert_to_pgbinary, *used = %d\n", *used);
+
+			npos += convert_to_pgbinary(buf, &new_statement[npos], *used);
+
+			new_statement[npos++] = '\'';	/*    Close Quote */
+			
+			break;
+
+		default:		/* a numeric type */
+			strcpy(&new_statement[npos], param_string);
+			npos += strlen(param_string);
+			break;
+
+		}
+
+	}	/* end, for */
+
+	// make sure new_statement is always null-terminated
+	new_statement[npos] = '\0';
+
+	return SQL_SUCCESS;
+}
+
+
+//	This function returns a pointer to static memory!
+char *
+convert_escape(char *value)
+{
+char key[32], val[256];
+static char escape[256];
+SIMPLE_TIME st;
+
+	sscanf(value, "%[^'] '%[^']'", key, val);
+
+	mylog("convert_escape: key='%s', val='%s'\n", key, val);
+
+	if ( ! strncmp(key, "d", 1)) {
+		sscanf(val, "%4d-%2d-%2d", &st.y, &st.m, &st.d);
+		sprintf(escape, "'%.2d-%.2d-%.4d'", st.m, st.d, st.y);
+		
+	} else if (! strncmp(key, "t", 1)) {
+		sprintf(escape, "'%s'", val);
+
+	} else if (! strncmp(key, "ts", 2)) {
+		sscanf(val, "%4d-%2d-%2d %2d:%2d:%2d", &st.y, &st.m, &st.d, &st.hh, &st.mm, &st.ss);
+		strcpy(escape, convert_time(&st));
+	}
+	else {
+		return NULL;
+	}
+
+	return escape;
+
+}
+
+
+int
+monthToNumber(char *mon)
+{
+int m = 0;
+
+	if ( ! stricmp(mon, "Jan"))
+		m = 1;
+	else if ( ! stricmp(mon, "Feb"))
+		m = 2;
+	else if ( ! stricmp(mon, "Mar"))
+		m = 3;
+	else if ( ! stricmp(mon, "Apr"))
+		m = 4;
+	else if ( ! stricmp(mon, "May"))
+		m = 5;
+	else if ( ! stricmp(mon, "Jun"))
+		m = 6;
+	else if ( ! stricmp(mon, "Jul"))
+		m = 7;
+	else if ( ! stricmp(mon, "Aug"))
+		m = 8;
+	else if ( ! stricmp(mon, "Sep"))
+		m = 9;
+	else if ( ! stricmp(mon, "Oct"))
+		m = 10;
+	else if ( ! stricmp(mon, "Nov"))
+		m = 11;
+	else if ( ! stricmp(mon, "Dec"))
+		m = 12;
+
+	return m;
+}
+
+
+char *
+convert_money(char *s)
+{
+size_t i = 0, out = 0;
+
+	for (i = 0; i < strlen(s); i++) {
+		if (s[i] == '$' || s[i] == ',' || s[i] == ')')
+			; // skip these characters
+		else if (s[i] == '(')
+			s[out++] = '-';
+		else
+			s[out++] = s[i];
+	}
+	s[out] = '\0';
+	return s;
+}
+
+/*	Convert a discrete time into a localized string */
+char *
+convert_time(SIMPLE_TIME *st)
+{
+struct tm tim;
+static char buf[1024];
+
+mylog("convert_time: m=%d,d=%d,y=%d,hh=%d,mm=%d,ss=%d\n",
+	  st->m, st->d, st->y, st->hh, st->mm, st->ss);
+
+	memset(&tim, 0, sizeof(tim));
+
+	tim.tm_mon = st->m - 1;
+	tim.tm_mday = st->d;
+	tim.tm_year = st->y - 1900;
+	tim.tm_hour = st->hh;
+	tim.tm_min = st->mm;
+	tim.tm_sec = st->ss;
+
+	/*	Dont bother trying to figure out the day of week because
+		postgres will determine it correctly.  However, the timezone
+		should be taken into account. $$$$
+	*/
+
+	//  tim.tm_isdst = _daylight;
+
+	strftime(buf, sizeof(buf), "%b %d %H:%M:%S %Y", 
+		&tim);
+
+mylog("convert_time: buf = '%s'\n", buf);
+
+	return buf;
+}
+
+/*	This function parses a character string for date/time info and fills in SIMPLE_TIME */
+/*	It does not zero out SIMPLE_TIME in case it is desired to initialize it with a value */
+char
+parse_datetime(char *buf, SIMPLE_TIME *st)
+{
+int y,m,d,hh,mm,ss;
+int nf;
+	
+	y = m = d = hh = mm = ss = 0;
+
+	if (buf[4] == '-')	/* year first */
+		nf = sscanf(buf, "%4d-%2d-%2d %2d:%2d:%2d", &y,&m,&d,&hh,&mm,&ss);
+	else
+		nf = sscanf(buf, "%2d-%2d-%4d %2d:%2d:%2d", &m,&d,&y,&hh,&mm,&ss);
+
+	if (nf == 5 || nf == 6) {
+		st->y = y;
+		st->m = m;
+		st->d = d;
+		st->hh = hh;
+		st->mm = mm;
+		st->ss = ss;
+
+		return TRUE;
+	}
+
+	if (buf[4] == '-')	/* year first */
+		nf = sscanf(buf, "%4d-%2d-%2d", &y, &m, &d);
+	else
+		nf = sscanf(buf, "%2d-%2d-%4d", &m, &d, &y);
+
+	if (nf == 3) {
+		st->y = y;
+		st->m = m;
+		st->d = d;
+
+		return TRUE;
+	}
+
+	nf = sscanf(buf, "%2d:%2d:%2d", &hh, &mm, &ss);
+	if (nf == 2 || nf == 3) {
+		st->hh = hh;
+		st->mm = mm;
+		st->ss = ss;
+
+		return TRUE;
+	}
+
+	return FALSE;
+}
+
+/*	Change linefeed to carriage-return/linefeed */
+char *
+convert_linefeeds(char *si, char *dst, size_t max)
+{
+size_t i = 0, out = 0;
+static char sout[TEXT_FIELD_SIZE+5];
+char *p;
+
+	if (dst)
+		p = dst;
+	else {
+		p = sout;
+		max = sizeof(sout);
+	}
+
+	p[0] = '\0';
+
+	for (i = 0; i < strlen(si) && out < max-2; i++) {
+		if (si[i] == '\n') {
+			p[out++] = '\r';
+			p[out++] = '\n';
+		}
+		else
+			p[out++] = si[i];
+	}
+	p[out] = '\0';
+	return p;
+}
+
+/*	Change carriage-return/linefeed to just linefeed */
+char *
+convert_returns(char *si, char *dst, int used)
+{
+size_t i = 0, out = 0, max;
+static char sout[TEXT_FIELD_SIZE+5];
+char *p;
+
+	if (dst)
+		p = dst;
+	else
+		p = sout;
+
+	p[0] = '\0';
+
+	if (used == SQL_NTS)
+		max = strlen(si);
+	else
+		max = used;
+
+	for (i = 0; i < max; i++) {
+		if (si[i] == '\r' && i+1 < strlen(si) && si[i+1] == '\n') 
+			continue;
+		else
+			p[out++] = si[i];
+	}
+	p[out] = '\0';
+	return p;
+}
+
+int
+convert_pgbinary_to_char(char *value, char *rgbValue, int cbValueMax)
+{
+	return 0;
+}
+
+unsigned int
+conv_from_octal(unsigned char *s)
+{
+int i, y=0;
+
+	for (i = 1; i <= 3; i++) {
+		y += (s[i] - 48) * (int) pow(8, 3-i);
+	}
+
+	return y;
+
+}
+
+//	convert octal escapes to bytes
+int
+convert_from_pgbinary(unsigned char *value, unsigned char *rgbValue, int cbValueMax)
+{
+size_t i;
+int o=0;
+	
+	for (i = 0; i < strlen(value); ) {
+		if (value[i] == '\\') {
+			rgbValue[o] = conv_from_octal(&value[i]);
+			i += 4;
+		}
+		else {
+			rgbValue[o] = value[i++];
+		}
+		mylog("convert_from_pgbinary: i=%d, rgbValue[%d] = %d, %c\n", i, o, rgbValue[o], rgbValue[o]);
+		o++;
+	}
+	return o;
+}
+
+
+char *
+conv_to_octal(unsigned char val)
+{
+int i;
+static char x[6];
+
+	x[0] = '\\';
+	x[1] = '\\';
+	x[5] = '\0';
+
+	for (i = 4; i > 1; i--) {
+		x[i] = (val & 7) + 48;
+		val >>= 3;
+	}
+
+	return x;
+}
+
+//	convert non-ascii bytes to octal escape sequences
+int
+convert_to_pgbinary(unsigned char *in, char *out, int len)
+{
+int i, o=0;
+
+
+	for (i = 0; i < len; i++) {
+		mylog("convert_to_pgbinary: in[%d] = %d, %c\n", i, in[i], in[i]);
+		if (in[i] < 32 || in[i] > 126) {
+			strcpy(&out[o], conv_to_octal(in[i])); 
+			o += 5;
+		}
+		else
+			out[o++] = in[i];
+
+	}
+
+	mylog("convert_to_pgbinary: returning %d, out='%.*s'\n", o, o, out);
+
+	return o;
+}
+

src/interfaces/odbc/convert.h

@@ -0,0 +1,47 @@
+
+/* File:            convert.h
+ *
+ * Description:     See "convert.c"
+ *
+ * Comments:        See "notice.txt" for copyright and license information.
+ *
+ */
+
+#ifndef __CONVERT_H__
+#define __CONVERT_H__
+
+#include "psqlodbc.h"
+
+/* copy_and_convert results */
+#define COPY_OK 0
+#define COPY_UNSUPPORTED_TYPE        1
+#define COPY_UNSUPPORTED_CONVERSION  2
+#define COPY_RESULT_TRUNCATED        3
+
+typedef struct {
+	int m;
+	int d;
+	int y;
+	int hh;
+	int mm;
+	int ss;
+} SIMPLE_TIME;
+
+int copy_and_convert_field_bindinfo(Int4 field_type, void *value, BindInfoClass *bic);
+int copy_and_convert_field(Int4 field_type, void *value,
+                           Int2 fCType, PTR rgbValue, SDWORD cbValueMax, SDWORD *pcbValue);
+
+int copy_statement_with_parameters(StatementClass *stmt);
+char *convert_escape(char *value);
+char *convert_money(char *s);
+int monthToNumber(char *mon);
+char *convert_time(SIMPLE_TIME *st);
+char parse_datetime(char *buf, SIMPLE_TIME *st);
+char *convert_linefeeds(char *s, char *dst, size_t max);
+char *convert_returns(char *si, char *dst, int used);
+
+int convert_pgbinary_to_char(char *value, char *rgbValue, int cbValueMax);
+int convert_from_pgbinary(unsigned char *value, unsigned char *rgbValue, int cbValueMax);
+int convert_to_pgbinary(unsigned char *in, char *out, int len);
+
+#endif

src/interfaces/odbc/drvconn.c

@@ -0,0 +1,327 @@
+
+/* Module:          drvconn.c
+ *
+ * Description:     This module contains only routines related to 
+ *                  implementing SQLDriverConnect.
+ *
+ * Classes:         n/a
+ *
+ * API functions:   SQLDriverConnect
+ *
+ * Comments:        See "notice.txt" for copyright and license information.
+ *
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "psqlodbc.h"
+#include "connection.h"
+
+#include <winsock.h>
+#include <sqlext.h>
+#include <string.h>
+#include <windows.h>
+#include <windowsx.h>
+#include <odbcinst.h>
+#include "resource.h"
+
+/* prototypes */
+BOOL FAR PASCAL dconn_FDriverConnectProc(HWND hdlg, UINT wMsg, WPARAM wParam, LPARAM lParam);
+RETCODE dconn_DoDialog(HWND hwnd, ConnInfo *ci);
+void dconn_get_connect_attributes(UCHAR FAR *connect_string, ConnInfo *ci);
+
+
+extern HINSTANCE NEAR s_hModule;               /* Saved module handle. */
+extern GLOBAL_VALUES globals;
+
+RETCODE SQL_API SQLDriverConnect(
+                                 HDBC      hdbc,
+                                 HWND      hwnd,
+                                 UCHAR FAR *szConnStrIn,
+                                 SWORD     cbConnStrIn,
+                                 UCHAR FAR *szConnStrOut,
+                                 SWORD     cbConnStrOutMax,
+                                 SWORD FAR *pcbConnStrOut,
+                                 UWORD     fDriverCompletion)
+{
+ConnectionClass *conn = (ConnectionClass *) hdbc;
+ConnInfo *ci;
+RETCODE dialog_result;
+char connect_string[MAX_CONNECT_STRING];
+int retval;
+char password_required = FALSE;
+
+	mylog("**** SQLDriverConnect: fDriverCompletion=%d, connStrIn='%s'\n", fDriverCompletion, szConnStrIn);
+
+	if ( ! conn) 
+		return SQL_INVALID_HANDLE;
+
+	qlog("conn=%u, SQLDriverConnect( in)='%s'\n", conn, szConnStrIn);
+
+	ci = &(conn->connInfo);
+
+	//	Parse the connect string and fill in conninfo for this hdbc.
+	dconn_get_connect_attributes(szConnStrIn, ci);
+
+	//	If the ConnInfo in the hdbc is missing anything,
+	//	this function will fill them in from the registry (assuming
+	//	of course there is a DSN given -- if not, it does nothing!)
+	CC_DSN_info(conn, CONN_DONT_OVERWRITE);
+
+	//	Fill in any default parameters if they are not there.
+	CC_set_defaults(conn);
+
+dialog:
+	ci->focus_password = password_required;
+
+	switch(fDriverCompletion) {
+	case SQL_DRIVER_PROMPT:
+		dialog_result = dconn_DoDialog(hwnd, ci);
+		if(dialog_result != SQL_SUCCESS) {
+			return dialog_result;
+		}
+		break;
+
+	case SQL_DRIVER_COMPLETE:
+	case SQL_DRIVER_COMPLETE_REQUIRED:
+	/* Password is not a required parameter. */
+		if( ci->username[0] == '\0' ||
+			ci->server[0] == '\0' ||
+			ci->database[0] == '\0' ||
+			ci->port[0] == '\0' ||
+			password_required) { 
+
+			dialog_result = dconn_DoDialog(hwnd, ci);
+			if(dialog_result != SQL_SUCCESS) {
+				return dialog_result;
+			}
+		}
+		break;
+	case SQL_DRIVER_NOPROMPT:
+		break;
+	}
+
+	/*	Password is not a required parameter unless authentication asks for it.
+		For now, I think its better to just let the application ask over and over until
+		a password is entered (the user can always hit Cancel to get out)
+	*/
+	if( ci->username[0] == '\0' ||
+		ci->server[0] == '\0' ||
+		ci->database[0] == '\0' || 
+		ci->port[0] == '\0') {
+//		(password_required && ci->password[0] == '\0'))
+
+		return SQL_NO_DATA_FOUND;
+	}
+
+	if(szConnStrOut) {
+
+		//	return the completed string to the caller.
+
+		char got_dsn = (ci->dsn[0] != '\0');
+
+		sprintf(connect_string, "%s=%s;DATABASE=%s;SERVER=%s;PORT=%s;UID=%s;READONLY=%s;PWD=%s;PROTOCOL=%s;CONNSETTINGS=%s", 
+			got_dsn ? "DSN" : "DRIVER", 
+			got_dsn ? ci->dsn : ci->driver,
+			ci->database,
+			ci->server,
+			ci->port,
+			ci->username,
+			ci->readonly,
+			ci->password,
+			ci->protocol,
+			ci->conn_settings);
+
+		if(pcbConnStrOut) {
+			*pcbConnStrOut = strlen(connect_string);
+		}
+		strncpy_null(szConnStrOut, connect_string, cbConnStrOutMax);
+	}
+
+	mylog("szConnStrOut = '%s'\n", szConnStrOut);
+	qlog("conn=%u, SQLDriverConnect(out)='%s'\n", conn, szConnStrOut);
+
+	// do the actual connect
+	retval = CC_connect(conn, password_required);
+	if (retval < 0) {		/* need a password */
+		if (fDriverCompletion == SQL_DRIVER_NOPROMPT)
+			return SQL_ERROR;	/* need a password but not allowed to prompt so error */
+		else {
+			password_required = TRUE;
+			goto dialog;
+		}
+	}
+	else if (retval == 0) {
+		//	error msg filled in above
+		return SQL_ERROR;
+	}
+
+	mylog("SQLDRiverConnect: returning success\n");
+	return SQL_SUCCESS;
+}
+
+
+RETCODE dconn_DoDialog(HWND hwnd, ConnInfo *ci)
+{
+int dialog_result;
+
+mylog("dconn_DoDialog: ci = %u\n", ci);
+
+	if(hwnd) {
+		dialog_result = DialogBoxParam(s_hModule, MAKEINTRESOURCE(DRIVERCONNDIALOG),
+									hwnd, dconn_FDriverConnectProc, (LPARAM) ci);
+		if(!dialog_result || (dialog_result == -1)) {
+			return SQL_NO_DATA_FOUND;
+		} else {
+			return SQL_SUCCESS;
+		}
+	}
+
+	return SQL_ERROR;
+}
+
+
+BOOL FAR PASCAL dconn_FDriverConnectProc(
+                                         HWND    hdlg,
+                                         UINT    wMsg,
+                                         WPARAM  wParam,
+                                         LPARAM  lParam)
+{
+static ConnInfo *ci;
+
+	switch (wMsg) {
+	case WM_INITDIALOG:
+		ci = (ConnInfo *) lParam;		// Save the ConnInfo for the "OK"
+
+		SetDlgItemText(hdlg, SERVER_EDIT, ci->server);
+		SetDlgItemText(hdlg, DATABASE_EDIT, ci->database);
+		SetDlgItemText(hdlg, USERNAME_EDIT, ci->username);
+		SetDlgItemText(hdlg, PASSWORD_EDIT, ci->password);
+		SetDlgItemText(hdlg, PORT_EDIT, ci->port);
+		CheckDlgButton(hdlg, READONLY_EDIT, atoi(ci->readonly));
+
+		CheckDlgButton(hdlg, PG62_EDIT, PROTOCOL_62(ci));
+
+		/*	The driver connect dialog box allows manipulating this global variable */
+		CheckDlgButton(hdlg, COMMLOG_EDIT, globals.commlog);
+
+		if (ci->database[0] == '\0')		
+			;	/* default focus */
+		else if (ci->server[0] == '\0')
+			SetFocus(GetDlgItem(hdlg, SERVER_EDIT));
+		else if (ci->port[0] == '\0')
+			SetFocus(GetDlgItem(hdlg, PORT_EDIT));
+		else if (ci->username[0] == '\0')
+			SetFocus(GetDlgItem(hdlg, USERNAME_EDIT));
+		else if (ci->focus_password)
+			SetFocus(GetDlgItem(hdlg, PASSWORD_EDIT));
+
+		break; 
+
+	case WM_COMMAND:
+		switch (GET_WM_COMMAND_ID(wParam, lParam)) {
+		case IDOK:
+
+			GetDlgItemText(hdlg, SERVER_EDIT, ci->server, sizeof(ci->server));
+			GetDlgItemText(hdlg, DATABASE_EDIT, ci->database, sizeof(ci->database));
+  			GetDlgItemText(hdlg, USERNAME_EDIT, ci->username, sizeof(ci->username));
+			GetDlgItemText(hdlg, PASSWORD_EDIT, ci->password, sizeof(ci->password));
+			GetDlgItemText(hdlg, PORT_EDIT, ci->port, sizeof(ci->port));
+
+			sprintf(ci->readonly, "%d", IsDlgButtonChecked(hdlg, READONLY_EDIT));
+
+			if (IsDlgButtonChecked(hdlg, PG62_EDIT))
+				strcpy(ci->protocol, PG62);
+			else
+				ci->protocol[0] = '\0';
+
+			/*	The driver connect dialog box allows manipulating this global variable */
+			globals.commlog = IsDlgButtonChecked(hdlg, COMMLOG_EDIT);
+			updateGlobals();
+
+		case IDCANCEL:
+			EndDialog(hdlg, GET_WM_COMMAND_ID(wParam, lParam) == IDOK);
+			return TRUE;
+		}
+	}
+
+	return FALSE;
+}
+
+
+
+void dconn_get_connect_attributes(UCHAR FAR *connect_string, ConnInfo *ci)
+{
+char *our_connect_string;
+char *pair, *attribute, *value, *equals;
+char *strtok_arg;
+
+	memset(ci, 0, sizeof(ConnInfo));
+
+	our_connect_string = strdup(connect_string);
+	strtok_arg = our_connect_string;
+
+	mylog("our_connect_string = '%s'\n", our_connect_string);
+
+	while(1) {
+		pair = strtok(strtok_arg, ";");
+		if(strtok_arg) {
+			strtok_arg = 0;
+		}
+		if(!pair) {
+			break;
+		}
+
+		equals = strchr(pair, '=');
+		if ( ! equals)
+			continue;
+
+		*equals = '\0';
+		attribute = pair;		//	ex. DSN
+		value = equals + 1;		//	ex. 'CEO co1'
+
+		mylog("attribute = '%s', value = '%s'\n", attribute, value);
+
+		if( !attribute || !value)
+			continue;          
+
+		/*********************************************************/
+		/*               PARSE ATTRIBUTES                        */
+		/*********************************************************/
+		if(stricmp(attribute, "DSN") == 0)
+			strcpy(ci->dsn, value);
+
+		else if(stricmp(attribute, "driver") == 0)
+			strcpy(ci->driver, value);
+
+		else if(stricmp(attribute, "uid") == 0)
+			strcpy(ci->username, value);
+
+		else if(stricmp(attribute, "pwd") == 0)
+			strcpy(ci->password, value);
+
+		else if ((stricmp(attribute, "server") == 0) ||
+					(stricmp(attribute, "servername") == 0))
+			strcpy(ci->server, value);
+
+		else if(stricmp(attribute, "port") == 0)
+			strcpy(ci->port, value);
+
+		else if(stricmp(attribute, "database") == 0)
+			strcpy(ci->database, value);
+
+		else if (stricmp(attribute, "readonly") == 0)
+			strcpy(ci->readonly, value);
+
+		else if (stricmp(attribute, "protocol") == 0)
+			strcpy(ci->protocol, value);
+
+		else if (stricmp(attribute, "connsettings") == 0)
+			strcpy(ci->conn_settings, value);
+
+	}
+
+
+	free(our_connect_string);
+}

src/interfaces/odbc/environ.c

@@ -0,0 +1,416 @@
+
+/* Module:          environ.c
+ *
+ * Description:     This module contains routines related to 
+ *                  the environment, such as storing connection handles,
+ *                  and returning errors.
+ *
+ * Classes:         EnvironmentClass (Functions prefix: "EN_")
+ *
+ * API functions:   SQLAllocEnv, SQLFreeEnv, SQLError
+ *
+ * Comments:        See "notice.txt" for copyright and license information.
+ *
+ */
+
+#include "environ.h"
+#include "connection.h"
+#include "statement.h"
+#include <stdlib.h>
+#include <malloc.h>
+
+/* The one instance of the handles */
+ConnectionClass *conns[MAX_CONNECTIONS];
+
+
+RETCODE SQL_API SQLAllocEnv(HENV FAR *phenv)
+{
+mylog("**** in SQLAllocEnv ** \n");
+
+	*phenv = (HENV) EN_Constructor();
+	if ( ! *phenv) {
+		*phenv = SQL_NULL_HENV;
+		return SQL_ERROR;
+	}
+ 
+	mylog("** exit SQLAllocEnv: phenv = %u **\n", *phenv);
+	return SQL_SUCCESS;
+}
+
+RETCODE SQL_API SQLFreeEnv(HENV henv)
+{
+EnvironmentClass *env = (EnvironmentClass *) henv;
+
+mylog("**** in SQLFreeEnv: env = %u ** \n", env);
+
+	if (env && EN_Destructor(env)) {
+		mylog("   ok\n");
+		return SQL_SUCCESS;
+	}
+
+	mylog("    error\n");
+	return SQL_ERROR;
+}
+
+//      Returns the next SQL error information.
+
+RETCODE SQL_API SQLError(
+        HENV       henv,
+        HDBC       hdbc,
+        HSTMT      hstmt,
+        UCHAR  FAR *szSqlState,
+        SDWORD FAR *pfNativeError,
+        UCHAR  FAR *szErrorMsg,
+        SWORD      cbErrorMsgMax,
+        SWORD  FAR *pcbErrorMsg)
+{
+char *msg;
+int status;
+    
+	mylog("**** SQLError: henv=%u, hdbc=%u, hstmt=%u\n", henv, hdbc, hstmt);
+
+    if (SQL_NULL_HSTMT != hstmt) {
+        // CC: return an error of a hstmt 
+        StatementClass *stmt = (StatementClass *) hstmt;
+        
+        if (NULL == stmt)
+            return SQL_INVALID_HANDLE;
+        
+        if (SC_get_error(stmt, &status, &msg)) {
+			mylog("SC_get_error: status = %d, msg = #%s#\n", status, msg);
+            if (NULL == msg) {
+                if (NULL != szSqlState)
+                    strcpy(szSqlState, "00000");
+                if (NULL != pcbErrorMsg)
+                    *pcbErrorMsg = 0;
+                if ((NULL != szErrorMsg) && (cbErrorMsgMax > 0)) 
+                    szErrorMsg[0] = '\0';
+                
+                return SQL_NO_DATA_FOUND;
+            }                
+            if (NULL != pcbErrorMsg)                
+                *pcbErrorMsg = (SWORD)strlen(msg);
+            
+            if ((NULL != szErrorMsg) && (cbErrorMsgMax > 0))
+                strncpy_null(szErrorMsg, msg, cbErrorMsgMax);
+            
+            if (NULL != pfNativeError) 
+                *pfNativeError = status;
+            
+            if (NULL != szSqlState)    
+                
+                switch (status) {
+                    // now determine the SQLSTATE to be returned
+                case STMT_TRUNCATED:
+                    strcpy(szSqlState, "01004");
+                    // data truncated
+                    break;
+                case STMT_INFO_ONLY:
+                    strcpy(szSqlState, "00000");
+                    // just information that is returned, no error
+                    break;
+                case STMT_EXEC_ERROR:
+                    strcpy(szSqlState, "08S01");
+                    // communication link failure
+                    break;
+                case STMT_STATUS_ERROR:
+                case STMT_SEQUENCE_ERROR:
+                    strcpy(szSqlState, "S1010");
+                    // Function sequence error
+                    break;
+                case STMT_NO_MEMORY_ERROR:
+                    strcpy(szSqlState, "S1001");
+                    // memory allocation failure
+                    break;
+                case STMT_COLNUM_ERROR:
+                    strcpy(szSqlState, "S1002");
+                    // invalid column number
+                    break;
+                case STMT_NO_STMTSTRING:
+                    strcpy(szSqlState, "S1001");
+                    // having no stmtstring is also a malloc problem
+                    break;
+                case STMT_ERROR_TAKEN_FROM_BACKEND:
+                    strcpy(szSqlState, "S1000");
+                    // general error
+                    break;
+                case STMT_INTERNAL_ERROR:
+                    strcpy(szSqlState, "S1000");
+                    // general error
+                    break;  
+                case STMT_NOT_IMPLEMENTED_ERROR:
+                    strcpy(szSqlState, "S1C00"); // == 'driver not capable'
+                    break;
+                case STMT_OPTION_OUT_OF_RANGE_ERROR:
+                    strcpy(szSqlState, "S1092");
+                    break;
+                case STMT_BAD_PARAMETER_NUMBER_ERROR:
+                    strcpy(szSqlState, "S1093");
+                    break;
+                case STMT_INVALID_COLUMN_NUMBER_ERROR:
+                    strcpy(szSqlState, "S1002");
+                    break;
+                case STMT_RESTRICTED_DATA_TYPE_ERROR:
+                    strcpy(szSqlState, "07006");
+                    break;
+                case STMT_INVALID_CURSOR_STATE_ERROR:
+                    strcpy(szSqlState, "24000");
+                    break;
+                case STMT_OPTION_VALUE_CHANGED:
+                    strcpy(szSqlState, "01S02");
+                    break;
+                default:
+                    strcpy(szSqlState, "S1000");
+                    // also a general error
+                    break;
+                }         
+
+				mylog("       szSqlState = '%s', szError='%s'\n", szSqlState, szErrorMsg);
+            
+        } else {
+            if (NULL != szSqlState)
+                strcpy(szSqlState, "00000");
+            if (NULL != pcbErrorMsg)
+                *pcbErrorMsg = 0;
+            if ((NULL != szErrorMsg) && (cbErrorMsgMax > 0)) 
+                szErrorMsg[0] = '\0';
+            
+			mylog("       returning NO_DATA_FOUND\n");
+            return SQL_NO_DATA_FOUND;
+        }
+        return SQL_SUCCESS;    
+        
+    } else if (SQL_NULL_HDBC != hdbc) {
+        ConnectionClass *conn = (ConnectionClass *) hdbc;
+        
+		mylog("calling CC_get_error\n");
+        if (CC_get_error(conn, &status, &msg)) {
+			mylog("CC_get_error: status = %d, msg = #%s#\n", status, msg);
+            if (NULL == msg) {
+                if (NULL != szSqlState)
+                    strcpy(szSqlState, "00000");
+                if (NULL != pcbErrorMsg)
+                    *pcbErrorMsg = 0;
+                if ((NULL != szErrorMsg) && (cbErrorMsgMax > 0)) 
+                    szErrorMsg[0] = '\0';
+                
+                return SQL_NO_DATA_FOUND;
+            }                
+            
+            if (NULL != pcbErrorMsg)
+                *pcbErrorMsg = (SWORD)strlen(msg);
+            if ((NULL != szErrorMsg) && (cbErrorMsgMax > 0))    
+                strncpy_null(szErrorMsg, msg, cbErrorMsgMax);
+            if (NULL != pfNativeError)    
+                *pfNativeError = status;
+            
+            if (NULL != szSqlState) 
+                switch(status) {
+                case CONN_INIREAD_ERROR:
+                    strcpy(szSqlState, "IM002");
+                    // data source not found
+                    break;
+                case CONN_OPENDB_ERROR:
+                    strcpy(szSqlState, "08001");
+                    // unable to connect to data source
+                    break;
+				case CONN_INVALID_AUTHENTICATION:
+				case CONN_AUTH_TYPE_UNSUPPORTED:
+					strcpy(szSqlState, "28000");
+					break;
+                case CONN_STMT_ALLOC_ERROR:
+                    strcpy(szSqlState, "S1001");
+                    // memory allocation failure
+                    break;
+                case CONN_IN_USE:
+                    strcpy(szSqlState, "S1000");
+                    // general error
+                    break;
+                case CONN_UNSUPPORTED_OPTION:
+                    strcpy(szSqlState, "IM001");
+                    // driver does not support this function
+                case CONN_INVALID_ARGUMENT_NO:
+                    strcpy(szSqlState, "S1009");
+                    // invalid argument value
+                    break;
+                case CONN_TRANSACT_IN_PROGRES:
+                    strcpy(szSqlState, "S1010");
+                    // when the user tries to switch commit mode in a transaction
+                    // -> function sequence error
+                    break;
+                case CONN_NO_MEMORY_ERROR:
+                    strcpy(szSqlState, "S1001");
+                    break;
+                case CONN_NOT_IMPLEMENTED_ERROR:
+                    strcpy(szSqlState, "S1C00");
+                    break;
+                default:
+                    strcpy(szSqlState, "S1000");
+                    // general error
+                    break;
+                }
+       
+        } else {
+			mylog("CC_Get_error returned nothing.\n");
+            if (NULL != szSqlState)
+                strcpy(szSqlState, "00000");
+            if (NULL != pcbErrorMsg)
+                *pcbErrorMsg = 0;
+            if ((NULL != szErrorMsg) && (cbErrorMsgMax > 0)) 
+                szErrorMsg[0] = '\0';
+            
+            return SQL_NO_DATA_FOUND;
+        }
+        return SQL_SUCCESS;
+        
+    } else if (SQL_NULL_HENV != henv) {
+        EnvironmentClass *env = (EnvironmentClass *)henv;
+        if(EN_get_error(env, &status, &msg)) {
+			mylog("EN_get_error: status = %d, msg = #%s#\n", status, msg);
+            if (NULL == msg) {
+                if (NULL != szSqlState)
+                    strcpy(szSqlState, "00000");
+                if (NULL != pcbErrorMsg)
+                    *pcbErrorMsg = 0;
+                if ((NULL != szErrorMsg) && (cbErrorMsgMax > 0)) 
+                    szErrorMsg[0] = '\0';
+
+                return SQL_NO_DATA_FOUND;
+            }                
+
+            if (NULL != pcbErrorMsg)                
+                *pcbErrorMsg = (SWORD)strlen(msg);
+            if ((NULL != szErrorMsg) && (cbErrorMsgMax > 0))
+                strncpy_null(szErrorMsg, msg, cbErrorMsgMax);
+            if (NULL != pfNativeError) 
+                *pfNativeError = status;
+            
+            if(szSqlState) {
+                switch(status) {
+                case ENV_ALLOC_ERROR:
+                    // memory allocation failure
+                    strcpy(szSqlState, "S1001");
+                    break;
+                default:
+                    strcpy(szSqlState, "S1000");
+                    // general error
+                    break;
+                }
+            }
+        } else {
+            if (NULL != szSqlState)
+                strcpy(szSqlState, "00000");
+            if (NULL != pcbErrorMsg)
+                *pcbErrorMsg = 0;
+            if ((NULL != szErrorMsg) && (cbErrorMsgMax > 0)) 
+                szErrorMsg[0] = '\0';
+            
+            return SQL_NO_DATA_FOUND;
+        }
+
+        return SQL_SUCCESS;
+    }
+    
+    if (NULL != szSqlState)
+        strcpy(szSqlState, "00000");
+    if (NULL != pcbErrorMsg)
+        *pcbErrorMsg = 0;
+    if ((NULL != szErrorMsg) && (cbErrorMsgMax > 0)) 
+        szErrorMsg[0] = '\0';
+    
+    return SQL_NO_DATA_FOUND;
+}
+
+
+/*********************************************************************/
+/*
+ * EnvironmentClass implementation
+ */
+
+
+
+EnvironmentClass
+*EN_Constructor(void)
+{
+EnvironmentClass *rv;
+
+    rv = (EnvironmentClass *) malloc(sizeof(EnvironmentClass));
+    if( rv) {
+		rv->errormsg = 0;
+		rv->errornumber = 0;
+	}
+
+    return rv;
+}
+
+
+char
+EN_Destructor(EnvironmentClass *self)
+{
+int lf;
+char rv = 1;
+
+	mylog("in EN_Destructor, self=%u\n", self);
+
+    // the error messages are static strings distributed throughout
+    // the source--they should not be freed
+
+	/* Free any connections belonging to this environment */
+	for (lf = 0; lf < MAX_CONNECTIONS; lf++) {
+		if (conns[lf] && conns[lf]->henv == self)
+			rv = rv && CC_Destructor(conns[lf]);
+	}
+
+	mylog("exit EN_Destructor: rv = %d\n", rv);
+	return rv;
+}
+
+char
+EN_get_error(EnvironmentClass *self, int *number, char **message)
+{
+	if(self && self->errormsg && self->errornumber) {
+		*message = self->errormsg;
+		*number = self->errornumber;
+		self->errormsg = 0;
+		self->errornumber = 0;
+		return 1;
+	} else {
+		return 0;
+	}
+}
+
+char
+EN_add_connection(EnvironmentClass *self, ConnectionClass *conn)
+{
+int i;
+
+mylog("EN_add_connection: self = %u, conn = %u\n", self, conn);
+
+	for (i = 0; i < MAX_CONNECTIONS; i++) {
+		if ( ! conns[i]) {
+			conn->henv = self;
+			conns[i] = conn;
+
+			mylog("       added at i =%d, conn->henv = %u, conns[i]->henv = %u\n",
+				i, conn->henv, conns[i]->henv);
+
+			return TRUE;
+		}
+	}
+
+	return FALSE;
+}
+
+char
+EN_remove_connection(EnvironmentClass *self, ConnectionClass *conn)
+{
+int i;
+
+	for (i = 0; i < MAX_CONNECTIONS; i++)
+		if (conns[i] == conn && conns[i]->status != CONN_EXECUTING) {
+			conns[i] = NULL;
+			return TRUE;
+		}
+
+	return FALSE;
+}

src/interfaces/odbc/environ.h

@@ -0,0 +1,32 @@
+
+/* File:            environ.h
+ *
+ * Description:     See "environ.c"
+ *
+ * Comments:        See "notice.txt" for copyright and license information.
+ *
+ */
+
+#ifndef __ENVIRON_H__
+#define __ENVIRON_H__
+
+#include "psqlodbc.h"
+#include <windows.h>
+#include <sql.h>
+
+#define ENV_ALLOC_ERROR 1
+
+/**********		Environment Handle	*************/
+struct EnvironmentClass_ {
+	char *errormsg;
+	int errornumber;
+};
+
+/*	Environment prototypes */
+EnvironmentClass *EN_Constructor(void);
+char EN_Destructor(EnvironmentClass *self);
+char EN_get_error(EnvironmentClass *self, int *number, char **message);
+char EN_add_connection(EnvironmentClass *self, ConnectionClass *conn);
+char EN_remove_connection(EnvironmentClass *self, ConnectionClass *conn);
+
+#endif

src/interfaces/odbc/execute.c

@@ -0,0 +1,535 @@
+
+/* Module:          execute.c
+ *
+ * Description:     This module contains routines related to 
+ *                  preparing and executing an SQL statement.
+ *
+ * Classes:         n/a
+ *
+ * API functions:   SQLPrepare, SQLExecute, SQLExecDirect, SQLTransact,
+ *                  SQLCancel, SQLNativeSql, SQLParamData, SQLPutData
+ *
+ * Comments:        See "notice.txt" for copyright and license information.
+ *
+ */
+
+#include "psqlodbc.h"
+#include <stdio.h>
+#include <string.h>
+#include <windows.h>
+#include <sqlext.h>
+
+#include "connection.h"
+#include "statement.h"
+#include "qresult.h"
+#include "convert.h"
+#include "bind.h"
+
+
+//      Perform a Prepare on the SQL statement
+RETCODE SQL_API SQLPrepare(HSTMT     hstmt,
+                           UCHAR FAR *szSqlStr,
+                           SDWORD    cbSqlStr)
+{
+StatementClass *self = (StatementClass *) hstmt;
+
+	if ( ! self)
+		return SQL_INVALID_HANDLE;
+    
+  /* CC: According to the ODBC specs it is valid to call SQLPrepare mulitple times. In that case,
+         the bound SQL statement is replaced by the new one */
+
+	switch (self->status) {
+	case STMT_PREMATURE:
+		mylog("**** SQLPrepare: STMT_PREMATURE, recycle\n");
+
+		SC_recycle_statement(self); /* recycle the statement, but do not remove parameter bindings */
+
+		/* NO Break! -- Contiue the same way as with a newly allocated statement ! */
+
+	case STMT_ALLOCATED:
+		// it is not really necessary to do any conversion of the statement
+		// here--just copy it, and deal with it when it's ready to be
+		// executed.
+		mylog("**** SQLPrepare: STMT_ALLOCATED, copy\n");
+
+		self->statement = make_string(szSqlStr, cbSqlStr, NULL);
+		if ( ! self->statement) {
+			self->errornumber = STMT_NO_MEMORY_ERROR;
+			self->errormsg = "No memory available to store statement";
+			return SQL_ERROR;
+		}
+
+		self->statement_type = statement_type(self->statement);
+
+		//	Check if connection is readonly (only selects are allowed)
+		if ( CC_is_readonly(self->hdbc) && self->statement_type != STMT_TYPE_SELECT ) {
+			self->errornumber = STMT_EXEC_ERROR;
+			self->errormsg = "Connection is readonly, only select statements are allowed.";
+			return SQL_ERROR;
+		}
+
+		self->prepare = TRUE;
+		self->status = STMT_READY;
+
+		return SQL_SUCCESS;
+    
+	case STMT_READY:  /* SQLPrepare has already been called -- Just changed the SQL statement that is assigned to the handle */
+		mylog("**** SQLPrepare: STMT_READY, change SQL\n");
+
+		if (self->statement)
+			free(self->statement);
+
+		self->statement = make_string(szSqlStr, cbSqlStr, NULL);
+		if ( ! self->statement) {
+			self->errornumber = STMT_NO_MEMORY_ERROR;
+			self->errormsg = "No memory available to store statement";
+			return SQL_ERROR;
+		}
+
+		self->prepare = TRUE;
+		self->statement_type = statement_type(self->statement);
+
+		//	Check if connection is readonly (only selects are allowed)
+		if ( CC_is_readonly(self->hdbc) && self->statement_type != STMT_TYPE_SELECT ) {
+			self->errornumber = STMT_EXEC_ERROR;
+			self->errormsg = "Connection is readonly, only select statements are allowed.";
+			return SQL_ERROR;
+		}
+
+		return SQL_SUCCESS;
+                            
+	case STMT_FINISHED:
+		mylog("**** SQLPrepare: STMT_FINISHED\n");
+		/* No BREAK:  continue as with STMT_EXECUTING */
+
+	case STMT_EXECUTING:
+		mylog("**** SQLPrepare: STMT_EXECUTING, error!\n");
+
+		self->errornumber = STMT_SEQUENCE_ERROR;
+		self->errormsg = "SQLPrepare(): The handle does not point to a statement that is ready to be executed";
+
+		return SQL_ERROR;
+
+	default:
+		self->errornumber = STMT_INTERNAL_ERROR;
+		self->errormsg = "An Internal Error has occured -- Unknown statement status.";
+		return SQL_ERROR;
+	}
+}
+
+//      -       -       -       -       -       -       -       -       -
+
+//      Performs the equivalent of SQLPrepare, followed by SQLExecute.
+
+RETCODE SQL_API SQLExecDirect(
+        HSTMT     hstmt,
+        UCHAR FAR *szSqlStr,
+        SDWORD    cbSqlStr)
+{
+StatementClass *stmt = (StatementClass *) hstmt;
+    
+	if ( ! stmt)
+		return SQL_INVALID_HANDLE;
+
+	if (stmt->statement)
+		free(stmt->statement);
+
+	// keep a copy of the un-parametrized statement, in case
+	// they try to execute this statement again
+	stmt->statement = make_string(szSqlStr, cbSqlStr, NULL);
+	if ( ! stmt->statement) {
+		stmt->errornumber = STMT_NO_MEMORY_ERROR;
+		stmt->errormsg = "No memory available to store statement";
+		return SQL_ERROR;
+	}
+
+	mylog("**** SQLExecDirect: hstmt=%u, statement='%s'\n", hstmt, stmt->statement);
+
+	stmt->prepare = FALSE;
+	stmt->statement_type = statement_type(stmt->statement);
+
+	//	Check if connection is readonly (only selects are allowed)
+	if ( CC_is_readonly(stmt->hdbc) && stmt->statement_type != STMT_TYPE_SELECT ) {
+		stmt->errornumber = STMT_EXEC_ERROR;
+		stmt->errormsg = "Connection is readonly, only select statements are allowed.";
+		return SQL_ERROR;
+	}
+	
+	mylog("SQLExecDirect: calling SQLExecute\n");
+
+	return SQLExecute(hstmt);
+}
+
+//      Execute a prepared SQL statement
+RETCODE SQL_API SQLExecute(
+        HSTMT   hstmt)
+{
+StatementClass *stmt = (StatementClass *) hstmt;
+ConnectionClass *conn;
+int i, retval;
+
+
+	if ( ! stmt)
+		return SQL_INVALID_HANDLE;
+
+	/*  If the statement is premature, it means we already executed
+		it from an SQLPrepare/SQLDescribeCol type of scenario.  So
+		just return success.
+	*/
+	if ( stmt->prepare && stmt->status == STMT_PREMATURE) {
+		stmt->status = STMT_FINISHED;       
+		return stmt->errormsg == NULL ? SQL_SUCCESS : SQL_ERROR;
+	}  
+
+	SC_clear_error(stmt);
+
+	conn = SC_get_conn(stmt);
+	if (conn->status == CONN_EXECUTING) {
+		stmt->errormsg = "Connection is already in use.";
+		stmt->errornumber = STMT_SEQUENCE_ERROR;
+		return SQL_ERROR;
+	}
+
+	if ( ! stmt->statement) {
+		stmt->errornumber = STMT_NO_STMTSTRING;
+		stmt->errormsg = "This handle does not have a SQL statement stored in it";
+		return SQL_ERROR;
+	}
+
+	/*	If SQLExecute is being called again, recycle the statement.
+		Note this should have been done by the application in a call
+		to SQLFreeStmt(SQL_CLOSE) or SQLCancel.
+	*/
+	if (stmt->status == STMT_FINISHED) {
+		SC_recycle_statement(stmt);
+	}
+
+	/*	Check if the statement is in the correct state */
+	if ((stmt->prepare && stmt->status != STMT_READY) || 
+		(stmt->status != STMT_ALLOCATED && stmt->status != STMT_READY)) {
+		
+		stmt->errornumber = STMT_STATUS_ERROR;
+		stmt->errormsg = "The handle does not point to a statement that is ready to be executed";
+		return SQL_ERROR;
+	}
+
+
+	/*	The bound parameters could have possibly changed since the last execute
+		of this statement?  Therefore check for params and re-copy.
+	*/
+	stmt->data_at_exec = -1;
+	for (i = 0; i < stmt->parameters_allocated; i++) {
+		/*	Check for data at execution parameters */
+		if ( stmt->parameters[i].data_at_exec == TRUE) {
+			if (stmt->data_at_exec < 0)
+				stmt->data_at_exec = 1;
+			else
+				stmt->data_at_exec++;
+		}
+	}
+	//	If there are some data at execution parameters, return need data
+	//	SQLParamData and SQLPutData will be used to send params and execute the statement.
+	if (stmt->data_at_exec > 0)
+		return SQL_NEED_DATA;
+
+
+	mylog("SQLExecute: copying statement params: trans_status=%d, len=%d, stmt='%s'\n", conn->transact_status, strlen(stmt->statement), stmt->statement);
+
+	//	Create the statement with parameters substituted.
+	retval = copy_statement_with_parameters(stmt);
+	if( retval != SQL_SUCCESS)
+		/* error msg passed from above */
+		return retval;
+
+	mylog("   stmt_with_params = '%s'\n", stmt->stmt_with_params);
+
+
+	return SC_execute(stmt);
+
+}
+
+
+
+
+//      -       -       -       -       -       -       -       -       -
+RETCODE SQL_API SQLTransact(
+        HENV    henv,
+        HDBC    hdbc,
+        UWORD   fType)
+{
+extern ConnectionClass *conns[];
+ConnectionClass *conn;
+QResultClass *res;
+char ok, *stmt_string;
+int lf;
+
+mylog("**** SQLTransact: hdbc=%u, henv=%u\n", hdbc, henv);
+
+	if (hdbc == SQL_NULL_HDBC && henv == SQL_NULL_HENV)
+		return SQL_INVALID_HANDLE;
+
+	/* If hdbc is null and henv is valid,
+	it means transact all connections on that henv.  
+	*/
+	if (hdbc == SQL_NULL_HDBC && henv != SQL_NULL_HENV) {
+		for (lf=0; lf <MAX_CONNECTIONS; lf++) {
+			conn = conns[lf];
+
+			if (conn && conn->henv == henv)
+				if ( SQLTransact(henv, (HDBC) conn, fType) != SQL_SUCCESS)
+					return SQL_ERROR;
+
+		}
+		return SQL_SUCCESS;       
+	}
+
+	conn = (ConnectionClass *) hdbc;
+
+	if (fType == SQL_COMMIT) {
+		stmt_string = "COMMIT";
+
+	} else if (fType == SQL_ROLLBACK) {
+		stmt_string = "ROLLBACK";
+
+	} else {
+		conn->errornumber = CONN_INVALID_ARGUMENT_NO;
+		conn->errormsg ="SQLTransact can only be called with SQL_COMMIT or SQL_ROLLBACK as parameter";
+		return SQL_ERROR;
+	}    
+
+	/*	If manual commit and in transaction, then proceed. */
+	if ( ! CC_is_in_autocommit(conn) &&  CC_is_in_trans(conn)) {
+
+		mylog("SQLTransact: sending on conn %d '%s'\n", conn, stmt_string);
+
+		res = CC_send_query(conn, stmt_string, NULL, NULL);
+		CC_set_no_trans(conn);
+
+		if ( ! res)
+			//	error msg will be in the connection
+			return SQL_ERROR;
+
+		ok = QR_command_successful(res);   
+		QR_Destructor(res);
+
+		if (!ok)
+			return SQL_ERROR;
+	}    
+	return SQL_SUCCESS;
+}
+
+//      -       -       -       -       -       -       -       -       -
+
+
+RETCODE SQL_API SQLCancel(
+        HSTMT   hstmt)  // Statement to cancel.
+{
+StatementClass *stmt = (StatementClass *) hstmt;
+
+	//	Check if this can handle canceling in the middle of a SQLPutData?
+	if ( ! stmt)
+		return SQL_INVALID_HANDLE;
+
+	//	Not in the middle of SQLParamData/SQLPutData so cancel like a close.
+	if (stmt->data_at_exec < 0)
+		return SQLFreeStmt(hstmt, SQL_CLOSE);
+
+	//	In the middle of SQLParamData/SQLPutData, so cancel that.
+	//	Note, any previous data-at-exec buffers will be freed in the recycle
+	//	if they call SQLExecDirect or SQLExecute again.
+
+	stmt->data_at_exec = -1;
+	stmt->current_exec_param = -1;
+	stmt->put_data = FALSE;
+
+}
+
+//      -       -       -       -       -       -       -       -       -
+
+//      Returns the SQL string as modified by the driver.
+
+RETCODE SQL_API SQLNativeSql(
+        HDBC      hdbc,
+        UCHAR FAR *szSqlStrIn,
+        SDWORD     cbSqlStrIn,
+        UCHAR FAR *szSqlStr,
+        SDWORD     cbSqlStrMax,
+        SDWORD FAR *pcbSqlStr)
+{
+
+    strncpy_null(szSqlStr, szSqlStrIn, cbSqlStrMax);
+
+    return SQL_SUCCESS;
+}
+
+//      -       -       -       -       -       -       -       -       -
+
+//      Supplies parameter data at execution time.      Used in conjuction with
+//      SQLPutData.
+
+RETCODE SQL_API SQLParamData(
+        HSTMT   hstmt,
+        PTR FAR *prgbValue)
+{
+StatementClass *stmt = (StatementClass *) hstmt;
+int i, retval;
+
+	if ( ! stmt)
+		return SQL_INVALID_HANDLE;
+
+	if (stmt->data_at_exec < 0) {
+		stmt->errornumber = STMT_SEQUENCE_ERROR;
+		stmt->errormsg = "No execution-time parameters for this statement";
+		return SQL_ERROR;
+	}
+
+	if (stmt->data_at_exec > stmt->parameters_allocated) {
+		stmt->errornumber = STMT_SEQUENCE_ERROR;
+		stmt->errormsg = "Too many execution-time parameters were present";
+		return SQL_ERROR;
+	}
+
+	/*	Done, now copy the params and then execute the statement */
+	if (stmt->data_at_exec == 0) {
+		retval = copy_statement_with_parameters(stmt);
+		if (retval != SQL_SUCCESS)
+			return retval;
+
+		return SC_execute(stmt);
+	}
+
+	/*	At least 1 data at execution parameter, so Fill in the token value */
+	for (i = 0; i < stmt->parameters_allocated; i++) {
+		if (stmt->parameters[i].data_at_exec == TRUE) {
+			stmt->data_at_exec--;
+			stmt->current_exec_param = i;
+			stmt->put_data = FALSE;
+			*prgbValue = stmt->parameters[i].buffer;	/* token */
+		}
+	}
+
+	return SQL_NEED_DATA;
+}
+
+//      -       -       -       -       -       -       -       -       -
+
+//      Supplies parameter data at execution time.      Used in conjunction with
+//      SQLParamData.
+
+RETCODE SQL_API SQLPutData(
+        HSTMT   hstmt,
+        PTR     rgbValue,
+        SDWORD  cbValue)
+{
+StatementClass *stmt = (StatementClass *) hstmt;
+char *buffer;
+SDWORD *used;
+int old_pos;
+
+
+	if ( ! stmt)
+		return SQL_INVALID_HANDLE;
+
+	
+	if (stmt->current_exec_param < 0) {
+		stmt->errornumber = STMT_SEQUENCE_ERROR;
+		stmt->errormsg = "Previous call was not SQLPutData or SQLParamData";
+		return SQL_ERROR;
+	}
+
+	if ( ! stmt->put_data) {	/* first call */
+
+		mylog("SQLPutData: (1) cbValue = %d\n", cbValue);
+
+		stmt->put_data = TRUE;
+
+		used = (SDWORD *) malloc(sizeof(SDWORD));
+		if ( ! used) {
+			stmt->errornumber = STMT_NO_MEMORY_ERROR;
+			stmt->errormsg = "Out of memory in SQLPutData (1)";
+			return SQL_ERROR;
+		}
+
+		*used = cbValue;
+		stmt->parameters[stmt->current_exec_param].EXEC_used = used;
+
+		if (cbValue == SQL_NULL_DATA)
+			return SQL_SUCCESS;
+
+		if (cbValue == SQL_NTS) {
+			buffer = strdup(rgbValue);
+			if ( ! buffer) {
+				stmt->errornumber = STMT_NO_MEMORY_ERROR;
+				stmt->errormsg = "Out of memory in SQLPutData (2)";
+				return SQL_ERROR;
+			}
+		}
+		else {
+			buffer = malloc(cbValue + 1);
+			if ( ! buffer) {
+				stmt->errornumber = STMT_NO_MEMORY_ERROR;
+				stmt->errormsg = "Out of memory in SQLPutData (2)";
+				return SQL_ERROR;
+			}
+			memcpy(buffer, rgbValue, cbValue);
+			buffer[cbValue] = '\0';
+		}
+
+		stmt->parameters[stmt->current_exec_param].EXEC_buffer = buffer;
+	}
+
+	else {	/* calling SQLPutData more than once */
+
+		mylog("SQLPutData: (>1) cbValue = %d\n", cbValue);
+
+		used = stmt->parameters[stmt->current_exec_param].EXEC_used;
+		buffer = stmt->parameters[stmt->current_exec_param].EXEC_buffer;
+
+		if (cbValue == SQL_NTS) {
+			buffer = realloc(buffer, strlen(buffer) + strlen(rgbValue) + 1);
+			if ( ! buffer) {
+				stmt->errornumber = STMT_NO_MEMORY_ERROR;
+				stmt->errormsg = "Out of memory in SQLPutData (3)";
+				return SQL_ERROR;
+			}
+			strcat(buffer, rgbValue);
+
+			mylog("       cbValue = SQL_NTS: strlen(buffer) = %d\n", strlen(buffer));
+
+			*used = cbValue;
+
+		}
+		else if (cbValue > 0) {
+
+			old_pos = *used;
+
+			*used += cbValue;
+
+			mylog("        cbValue = %d, old_pos = %d, *used = %d\n", cbValue, old_pos, *used);
+
+			buffer = realloc(buffer, *used + 1);
+			if ( ! buffer) {
+				stmt->errornumber = STMT_NO_MEMORY_ERROR;
+				stmt->errormsg = "Out of memory in SQLPutData (3)";
+				return SQL_ERROR;
+			}
+
+			memcpy(&buffer[old_pos], rgbValue, cbValue);
+			buffer[*used] = '\0';
+
+		}
+		else
+			return SQL_ERROR;
+		
+
+		/*	reassign buffer incase realloc moved it */
+		stmt->parameters[stmt->current_exec_param].EXEC_buffer = buffer;
+
+	}
+
+
+	return SQL_SUCCESS;
+}
+
+

src/interfaces/odbc/license.txt

@@ -0,0 +1,962 @@
+		  GNU LIBRARY GENERAL PUBLIC LICENSE
+
+		       Version 2, June 1991
+
+
+
+ Copyright (C) 1991 Free Software Foundation, Inc.
+
+                    675 Mass Ave, Cambridge, MA 02139, USA
+
+ Everyone is permitted to copy and distribute verbatim copies
+
+ of this license document, but changing it is not allowed.
+
+
+
+[This is the first released version of the library GPL.  It is
+
+ numbered 2 because it goes with version 2 of the ordinary GPL.]
+
+
+
+			    Preamble
+
+
+
+  The licenses for most software are designed to take away your
+
+freedom to share and change it.  By contrast, the GNU General Public
+
+Licenses are intended to guarantee your freedom to share and change
+
+free software--to make sure the software is free for all its users.
+
+
+
+  This license, the Library General Public License, applies to some
+
+specially designated Free Software Foundation software, and to any
+
+other libraries whose authors decide to use it.  You can use it for
+
+your libraries, too.
+
+
+
+  When we speak of free software, we are referring to freedom, not
+
+price.  Our General Public Licenses are designed to make sure that you
+
+have the freedom to distribute copies of free software (and charge for
+
+this service if you wish), that you receive source code or can get it
+
+if you want it, that you can change the software or use pieces of it
+
+in new free programs; and that you know you can do these things.
+
+
+
+  To protect your rights, we need to make restrictions that forbid
+
+anyone to deny you these rights or to ask you to surrender the rights.
+
+These restrictions translate to certain responsibilities for you if
+
+you distribute copies of the library, or if you modify it.
+
+
+
+  For example, if you distribute copies of the library, whether gratis
+
+or for a fee, you must give the recipients all the rights that we gave
+
+you.  You must make sure that they, too, receive or can get the source
+
+code.  If you link a program with the library, you must provide
+
+complete object files to the recipients so that they can relink them
+
+with the library, after making changes to the library and recompiling
+
+it.  And you must show them these terms so they know their rights.
+
+
+
+  Our method of protecting your rights has two steps: (1) copyright
+
+the library, and (2) offer you this license which gives you legal
+
+permission to copy, distribute and/or modify the library.
+
+
+
+  Also, for each distributor's protection, we want to make certain
+
+that everyone understands that there is no warranty for this free
+
+library.  If the library is modified by someone else and passed on, we
+
+want its recipients to know that what they have is not the original
+
+version, so that any problems introduced by others will not reflect on
+
+the original authors' reputations.
+
+
+
+  Finally, any free program is threatened constantly by software
+
+patents.  We wish to avoid the danger that companies distributing free
+
+software will individually obtain patent licenses, thus in effect
+
+transforming the program into proprietary software.  To prevent this,
+
+we have made it clear that any patent must be licensed for everyone's
+
+free use or not licensed at all.
+
+
+
+  Most GNU software, including some libraries, is covered by the ordinary
+
+GNU General Public License, which was designed for utility programs.  This
+
+license, the GNU Library General Public License, applies to certain
+
+designated libraries.  This license is quite different from the ordinary
+
+one; be sure to read it in full, and don't assume that anything in it is
+
+the same as in the ordinary license.
+
+
+
+  The reason we have a separate public license for some libraries is that
+
+they blur the distinction we usually make between modifying or adding to a
+
+program and simply using it.  Linking a program with a library, without
+
+changing the library, is in some sense simply using the library, and is
+
+analogous to running a utility program or application program.  However, in
+
+a textual and legal sense, the linked executable is a combined work, a
+
+derivative of the original library, and the ordinary General Public License
+
+treats it as such.
+
+
+
+  Because of this blurred distinction, using the ordinary General
+
+Public License for libraries did not effectively promote software
+
+sharing, because most developers did not use the libraries.  We
+
+concluded that weaker conditions might promote sharing better.
+
+
+
+  However, unrestricted linking of non-free programs would deprive the
+
+users of those programs of all benefit from the free status of the
+
+libraries themselves.  This Library General Public License is intended to
+
+permit developers of non-free programs to use free libraries, while
+
+preserving your freedom as a user of such programs to change the free
+
+libraries that are incorporated in them.  (We have not seen how to achieve
+
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+  <signature of Ty Coon>, 1 April 1990
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+  Ty Coon, President of Vice
+
+
+
+That's all there is to it!
+

src/interfaces/odbc/misc.c

@@ -0,0 +1,224 @@
+
+/* Module:          misc.c
+ *
+ * Description:     This module contains miscellaneous routines
+ *                  such as for debugging/logging and string functions.
+ *
+ * Classes:         n/a
+ *
+ * API functions:   none
+ *
+ * Comments:        See "notice.txt" for copyright and license information.
+ *
+ */
+
+#include <stdio.h>
+#include <windows.h>
+#include <sql.h>
+
+#include "psqlodbc.h"
+
+extern GLOBAL_VALUES globals;
+
+
+#ifdef MY_LOG
+#include <varargs.h>
+
+void
+mylog(va_alist)
+va_dcl
+{
+char *fmt;
+char *args;
+
+static FILE *LOGFP = 0;
+
+	if ( globals.debug) {
+		va_start(args);
+		fmt = va_arg(args, char *);
+
+		if (! LOGFP) {
+			LOGFP = fopen("c:\\mylog.log", "w");
+			setbuf(LOGFP, NULL);
+		}
+
+		if (LOGFP)
+			vfprintf(LOGFP, fmt, args);
+
+		va_end(args);
+	}
+}
+#endif
+
+
+#ifdef Q_LOG
+#include <varargs.h>
+
+void qlog(va_alist)
+va_dcl
+{
+char *fmt;
+char *args;
+static FILE *LOGFP = 0;
+
+	if ( globals.commlog) {
+		va_start(args);
+		fmt = va_arg(args, char *);
+
+		if (! LOGFP) {
+			LOGFP = fopen("c:\\psqlodbc.log", "w");
+			setbuf(LOGFP, NULL);
+		}
+
+		if (LOGFP)
+			vfprintf(LOGFP, fmt, args);
+
+		va_end(args);
+	}
+}
+#endif
+
+
+/*	returns STRCPY_FAIL, STRCPY_TRUNCATED, or #bytes copied (not including null term) */
+int 
+my_strcpy(char *dst, size_t dst_len, char *src, size_t src_len)
+{
+	if (dst_len <= 0)
+		return STRCPY_FAIL;
+
+	if (src_len == SQL_NULL_DATA) {
+		dst[0] = '\0';
+		return STRCPY_NULL;	
+	}
+
+	else if (src_len == SQL_NTS) {
+		if (src_len < dst_len)
+			strcpy(dst, src);
+		else {
+			memcpy(dst, src, dst_len-1);
+			dst[dst_len-1] = '\0';	/* truncated */
+			return STRCPY_TRUNCATED;
+		}
+	}
+
+	else if (src_len <= 0)
+		return STRCPY_FAIL;
+
+	else {	
+		if (src_len < dst_len) {
+			memcpy(dst, src, src_len);
+			dst[src_len] = '\0';
+		}
+		else { 
+			memcpy(dst, src, dst_len-1);
+			dst[dst_len-1] = '\0';	/* truncated */
+			return STRCPY_TRUNCATED;
+		}
+	}
+
+	return strlen(dst);
+}
+
+// strncpy copies up to len characters, and doesn't terminate
+// the destination string if src has len characters or more.
+// instead, I want it to copy up to len-1 characters and always
+// terminate the destination string.
+char *strncpy_null(char *dst, const char *src, size_t len)
+{
+unsigned int i;
+
+
+	if (NULL != dst) {
+
+		/*  Just in case, check for special lengths */
+		if (len == SQL_NULL_DATA) {
+			dst[0] = '\0';
+			return NULL;
+		}	
+		else if (len == SQL_NTS)
+			len = strlen(src) + 1;
+
+		for(i = 0; src[i] && i < len - 1; i++) {
+			dst[i] = src[i];
+		}
+
+		if(len > 0) {
+			dst[i] = '\0';
+		}
+	}
+	return dst;
+}
+
+//	Create a null terminated string (handling the SQL_NTS thing):
+//		1. If buf is supplied, place the string in there (assumes enough space) and return buf.
+//		2. If buf is not supplied, malloc space and return this string
+char *
+make_string(char *s, int len, char *buf)
+{
+int length;
+char *str;
+
+    if(s && (len > 0 || len == SQL_NTS)) {
+		length = (len > 0) ? len : strlen(s);
+
+		if (buf) {
+			strncpy_null(buf, s, length+1);
+			return buf;
+		}
+
+        str = malloc(length + 1);
+		if ( ! str)
+			return NULL;
+
+        strncpy_null(str, s, length+1);
+		return str;
+	}
+
+	return NULL;
+}
+
+//	Concatenate a single formatted argument to a given buffer handling the SQL_NTS thing.
+//	"fmt" must contain somewhere in it the single form '%.*s'
+//	This is heavily used in creating queries for info routines (SQLTables, SQLColumns).
+//	This routine could be modified to use vsprintf() to handle multiple arguments.
+char *
+my_strcat(char *buf, char *fmt, char *s, int len)
+{
+
+    if (s && (len > 0 || (len == SQL_NTS && strlen(s) > 0))) {
+		int length = (len > 0) ? len : strlen(s);
+
+		int pos = strlen(buf);
+
+		sprintf(&buf[pos], fmt, length, s);
+		return buf;
+	}
+	return NULL;
+}
+
+void remove_newlines(char *string)
+{
+    unsigned int i;
+
+    for(i=0; i < strlen(string); i++) {
+        if((string[i] == '\n') ||
+           (string[i] == '\r')) {
+            string[i] = ' ';
+        }
+    }
+}
+
+char *
+trim(char *s)
+{
+	int i;
+
+	for (i = strlen(s) - 1; i >= 0; i--) {
+		if (s[i] == ' ')
+			s[i] = '\0';
+		else
+			break;
+	}
+
+	return s;
+}

src/interfaces/odbc/misc.h

@@ -0,0 +1,58 @@
+
+/* File:            misc.h
+ *
+ * Description:     See "misc.c"
+ *
+ * Comments:        See "notice.txt" for copyright and license information.
+ *
+ */
+
+#ifndef __MISC_H__
+#define __MISC_H__
+
+#include <stdio.h>
+
+/*	Uncomment MY_LOG define to compile in the mylog() statements.
+	Then, debug logging will occur if 'Debug' is set to 1 in the ODBCINST.INI
+	portion of the registry.  You may have to manually add this key.
+	This logfile is intended for development use, not for an end user!
+*/
+// #define MY_LOG
+
+
+/*	Uncomment Q_LOG to compile in the qlog() statements (Communications log, i.e. CommLog).
+	This logfile contains serious log statements that are intended for an
+	end user to be able to read and understand.  It is controlled by the
+	'CommLog' flag in the ODBCINST.INI portion of the registry (see above),
+	which is manipulated on the setup/connection dialog boxes.
+*/
+#define Q_LOG
+
+
+#ifdef MY_LOG
+void mylog();	/* prototype */
+#else
+#define mylog    // mylog
+#endif
+
+#ifdef Q_LOG
+void qlog();	/* prototype */
+#else
+#define qlog    // qlog
+#endif
+
+void remove_newlines(char *string);
+char *strncpy_null(char *dst, const char *src, size_t len);
+char *trim(char *string);
+char *make_string(char *s, int len, char *buf);
+char *my_strcat(char *buf, char *fmt, char *s, int len);
+
+/* defines for return value of my_strcpy */
+#define STRCPY_SUCCESS		1
+#define STRCPY_FAIL			0
+#define STRCPY_TRUNCATED	-1
+#define STRCPY_NULL			-2
+
+int my_strcpy(char *dst, size_t dst_len, char *src, size_t src_len);
+
+#endif

src/interfaces/odbc/notice.txt

@@ -0,0 +1,35 @@
+
+/********************************************************************
+
+  PSQLODBC.DLL - A library to talk to the PostgreSQL DBMS using ODBC.
+
+
+  Copyright (C) 1998; Insight Distribution Systems
+
+  The code contained in this library is based on code written by 
+  Christian Czezatke and Dan McGuirk, (C) 1996.
+
+
+  This library is free software; you can redistribute it and/or modify
+  it under the terms of the GNU Library General Public License as 
+  published by the Free Software Foundation; either version 2 of the 
+  License, or (at your option) any later version.
+
+  This library is distributed in the hope that it will be useful, but
+  WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTIBILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+  Library General Public License for more details.
+
+  You should have received a copy of the GNU Library General Public
+  License along with this library (see "license.txt"); if not, write to
+  the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA
+  02139, USA.
+
+
+  How to contact the author:
+
+  email:  byronn@insightdist.com	(Byron Nikolaidis)
+
+
+***********************************************************************/
+

src/interfaces/odbc/options.c

@@ -0,0 +1,210 @@
+
+/* Module:          options.c
+ *
+ * Description:     This module contains routines for getting/setting
+ *                  connection and statement options.
+ *
+ * Classes:         n/a
+ *
+ * API functions:   SQLSetConnectOption, SQLSetStmtOption, SQLGetConnectOption,
+ *                  SQLGetStmtOption
+ *
+ * Comments:        See "notice.txt" for copyright and license information.
+ *
+ */
+
+#include "psqlodbc.h"
+#include <windows.h>
+#include <sql.h>
+#include "environ.h"
+#include "connection.h"
+#include "statement.h"
+
+/* Implements only SQL_AUTOCOMMIT */
+RETCODE SQL_API SQLSetConnectOption(
+        HDBC    hdbc,
+        UWORD   fOption,
+        UDWORD  vParam)
+{
+ConnectionClass *conn = (ConnectionClass *) hdbc;
+
+	if ( ! conn) 
+		return SQL_INVALID_HANDLE;
+
+	switch (fOption) {
+	case SQL_AUTOCOMMIT:
+
+		/*  Since we are almost always in a transaction, this is now ok.
+			Even if we were, the logic will handle it by sending a commit
+			after the statement.
+		
+		if (CC_is_in_trans(conn)) {
+			conn->errormsg = "Cannot switch commit mode while a transaction is in progres";
+			conn->errornumber = CONN_TRANSACT_IN_PROGRES;
+			return SQL_ERROR;
+		}
+		*/
+
+		mylog("SQLSetConnectOption: AUTOCOMMIT: transact_status=%d, vparam=%d\n", conn->transact_status, vParam);
+
+		switch(vParam) {
+		case SQL_AUTOCOMMIT_OFF:
+			CC_set_autocommit_off(conn);
+			break;
+
+		case SQL_AUTOCOMMIT_ON:
+			CC_set_autocommit_on(conn);
+			break;
+
+		default:
+			conn->errormsg = "Illegal parameter value for SQL_AUTOCOMMIT";
+			conn->errornumber = CONN_INVALID_ARGUMENT_NO;
+			return SQL_ERROR;
+		}
+
+		break;
+
+	case SQL_LOGIN_TIMEOUT:
+		break;
+
+	case SQL_ACCESS_MODE:
+		break;
+
+	default:
+		conn->errormsg = "This option is currently unsupported by the driver";
+		conn->errornumber = CONN_UNSUPPORTED_OPTION;
+		return SQL_ERROR;
+
+	}    
+	return SQL_SUCCESS;
+}
+
+//      -       -       -       -       -       -       -       -       -
+
+RETCODE SQL_API SQLSetStmtOption(
+        HSTMT   hstmt,
+        UWORD   fOption,
+        UDWORD  vParam)
+{
+StatementClass *stmt = (StatementClass *) hstmt;
+
+    // thought we could fake Access out by just returning SQL_SUCCESS
+    // all the time, but it tries to set a huge value for SQL_MAX_LENGTH
+    // and expects the driver to reduce it to the real value
+
+    if( ! stmt) {
+        return SQL_INVALID_HANDLE;
+    }
+
+    switch(fOption) {
+    case SQL_QUERY_TIMEOUT:
+		mylog("SetStmtOption: vParam = %d\n", vParam);
+		/*
+		stmt->errornumber = STMT_OPTION_VALUE_CHANGED;
+		stmt->errormsg = "Query Timeout:  value changed to 0";
+		return SQL_SUCCESS_WITH_INFO;
+		*/
+		return SQL_SUCCESS;
+        break;
+    case SQL_MAX_LENGTH:
+/* CC: Some apps consider returning SQL_SUCCESS_WITH_INFO to be an error */
+/* so if we're going to return SQL_SUCCESS, we better not set an */
+/* error message.  (otherwise, if a subsequent function call returns */
+/* SQL_ERROR without setting a message, things can get confused.) */
+
+      /*
+        stmt->errormsg = "Requested value changed.";
+        stmt->errornumber = STMT_OPTION_VALUE_CHANGED;
+       */
+
+        return SQL_SUCCESS;
+        break;
+	case SQL_MAX_ROWS:
+		mylog("SetStmtOption(): SQL_MAX_ROWS = %d, returning success\n", vParam);
+		stmt->maxRows = vParam;
+		return SQL_SUCCESS;
+		break;
+    default:
+        return SQL_ERROR;
+    }
+
+    return SQL_SUCCESS;
+}
+
+//      -       -       -       -       -       -       -       -       -
+
+/* This function just can tell you whether you are in Autcommit mode or not */
+RETCODE SQL_API SQLGetConnectOption(
+        HDBC    hdbc,
+        UWORD   fOption,
+        PTR     pvParam)
+{
+ConnectionClass *conn = (ConnectionClass *) hdbc;
+
+    if (! conn) 
+       return SQL_INVALID_HANDLE;
+
+    switch (fOption) {
+      case SQL_AUTOCOMMIT:
+      /* CC 28.05.96: Do not set fOption, but pvParam */
+        *((UDWORD *)pvParam) = (UDWORD)( CC_is_in_autocommit(conn) ?
+                                        SQL_AUTOCOMMIT_ON : SQL_AUTOCOMMIT_OFF);
+      break;
+      /* we don't use qualifiers */
+    case SQL_CURRENT_QUALIFIER:
+      if(pvParam) {
+	strcpy(pvParam, "");
+      }
+      break;
+    default:
+        conn->errormsg = "This option is currently unsupported by the driver";
+        conn->errornumber = CONN_UNSUPPORTED_OPTION;
+        return SQL_ERROR;
+      break;
+
+    }    
+
+    return SQL_SUCCESS;
+}
+
+//      -       -       -       -       -       -       -       -       -
+
+RETCODE SQL_API SQLGetStmtOption(
+        HSTMT   hstmt,
+        UWORD   fOption,
+        PTR     pvParam)
+{
+StatementClass *stmt = (StatementClass *) hstmt;
+
+    // thought we could fake Access out by just returning SQL_SUCCESS
+    // all the time, but it tries to set a huge value for SQL_MAX_LENGTH
+    // and expects the driver to reduce it to the real value
+
+    if( ! stmt) {
+        return SQL_INVALID_HANDLE;
+    }
+
+    switch(fOption) {
+    case SQL_QUERY_TIMEOUT:
+        // how long we wait on a query before returning to the
+        // application (0 == forever)
+        *((SDWORD *)pvParam) = 0;
+        break;
+    case SQL_MAX_LENGTH:
+        // what is the maximum length that will be returned in
+        // a single column
+        *((SDWORD *)pvParam) = 4096;
+        break;
+	case SQL_MAX_ROWS:
+		*((SDWORD *)pvParam) = stmt->maxRows;
+		mylog("GetSmtOption: MAX_ROWS, returning %d\n", stmt->maxRows);
+
+		break;
+    default:
+        return SQL_ERROR;
+    }
+
+    return SQL_SUCCESS;
+}
+
+//      -       -       -       -       -       -       -       -       -

src/interfaces/odbc/pgtypes.c

@@ -0,0 +1,441 @@
+
+/* Module:          pgtypes.c
+ *
+ * Description:     This module contains routines for getting information
+ *                  about the supported Postgres data types.  Only the function
+ *                  pgtype_to_sqltype() returns an unknown condition.  All other
+ *                  functions return a suitable default so that even data types that
+ *                  are not directly supported can be used (it is handled as char data).
+ *
+ * Classes:         n/a
+ *
+ * API functions:   none
+ *
+ * Comments:        See "notice.txt" for copyright and license information.
+ *
+ */
+
+#include "psqlodbc.h"
+#include "pgtypes.h"
+#include <windows.h>
+#include <sql.h>
+#include <sqlext.h>
+
+/* these are the types we support.  all of the pgtype_ functions should */
+/* return values for each one of these.                                 */
+
+/* NOTE: Even types not directly supported are handled as character types
+		so all types should work (points, etc.) */
+
+Int4 pgtypes_defined[]  = { 
+				PG_TYPE_CHAR,
+				PG_TYPE_CHAR2,
+				PG_TYPE_CHAR4,
+			    PG_TYPE_CHAR8,
+			    PG_TYPE_BPCHAR,
+			    PG_TYPE_VARCHAR,
+				PG_TYPE_DATE,
+				PG_TYPE_TIME,
+				PG_TYPE_ABSTIME,	/* a timestamp, sort of */
+			    PG_TYPE_TEXT,
+			    PG_TYPE_NAME,
+			    PG_TYPE_INT2,
+			    PG_TYPE_INT4,
+			    PG_TYPE_FLOAT4,
+			    PG_TYPE_FLOAT8,
+			    PG_TYPE_OID,
+				PG_TYPE_MONEY,
+				PG_TYPE_BOOL,
+				PG_TYPE_CHAR16,
+				PG_TYPE_DATETIME,
+				PG_TYPE_BYTEA,
+			    0 };
+			  
+
+/*	There are two ways of calling this function:  
+	1.	When going through the supported PG types (SQLGetTypeInfo)
+	2.	When taking any type id (SQLColumns, SQLGetData)
+
+	The first type will always work because all the types defined are returned here.
+	The second type will return PG_UNKNOWN when it does not know.  The calling
+	routine checks for this and changes it to a char type.  This allows for supporting
+	types that are unknown.  All other pg routines in here return a suitable default.
+*/
+Int2 pgtype_to_sqltype(Int4 type)
+{
+    switch(type) {
+    case PG_TYPE_CHAR:
+	case PG_TYPE_CHAR2:
+	case PG_TYPE_CHAR4:
+    case PG_TYPE_CHAR8:
+	case PG_TYPE_CHAR16:		return SQL_CHAR;
+
+    case PG_TYPE_BPCHAR:
+    case PG_TYPE_NAME:          
+    case PG_TYPE_VARCHAR:		return SQL_VARCHAR;
+
+    case PG_TYPE_TEXT:			return SQL_LONGVARCHAR;
+	case PG_TYPE_BYTEA:			return SQL_LONGVARBINARY;
+
+    case PG_TYPE_INT2:          return SQL_SMALLINT;
+    case PG_TYPE_OID:
+    case PG_TYPE_INT4:          return SQL_INTEGER;
+    case PG_TYPE_FLOAT4:        return SQL_REAL;
+    case PG_TYPE_FLOAT8:        return SQL_FLOAT;
+	case PG_TYPE_DATE:			return SQL_DATE;
+	case PG_TYPE_TIME:			return SQL_TIME;
+	case PG_TYPE_ABSTIME:		
+	case PG_TYPE_DATETIME:		return SQL_TIMESTAMP;
+	case PG_TYPE_MONEY:			return SQL_FLOAT;
+	case PG_TYPE_BOOL:			return SQL_CHAR;
+
+    default:                    return PG_UNKNOWN;	/* check return for this */
+    }
+}
+
+Int2 pgtype_to_ctype(Int4 type)
+{
+    switch(type) {
+    case PG_TYPE_INT2:          return SQL_C_SSHORT;
+    case PG_TYPE_OID:
+    case PG_TYPE_INT4:          return SQL_C_SLONG;
+    case PG_TYPE_FLOAT4:        return SQL_C_FLOAT;
+    case PG_TYPE_FLOAT8:        return SQL_C_DOUBLE;
+	case PG_TYPE_DATE:			return SQL_C_DATE;
+	case PG_TYPE_TIME:			return SQL_C_TIME;
+	case PG_TYPE_ABSTIME:		
+	case PG_TYPE_DATETIME:		return SQL_C_TIMESTAMP;
+	case PG_TYPE_MONEY:			return SQL_C_FLOAT;
+	case PG_TYPE_BOOL:			return SQL_C_CHAR;
+
+	case PG_TYPE_BYTEA:			return SQL_C_BINARY;
+
+    default:                    return SQL_C_CHAR;
+    }
+}
+
+char *pgtype_to_name(Int4 type)
+{
+    switch(type) {
+    case PG_TYPE_CHAR:          return "char";
+	case PG_TYPE_CHAR2:			return "char2";
+	case PG_TYPE_CHAR4:			return "char4";
+    case PG_TYPE_CHAR8:         return "char8";
+	case PG_TYPE_CHAR16:		return "char16";
+    case PG_TYPE_VARCHAR:       return "varchar";
+    case PG_TYPE_BPCHAR:        return "bpchar";
+    case PG_TYPE_TEXT:          return "text";
+    case PG_TYPE_NAME:          return "name";
+    case PG_TYPE_INT2:          return "int2";
+    case PG_TYPE_OID:           return "oid";
+    case PG_TYPE_INT4:          return "int4";
+    case PG_TYPE_FLOAT4:        return "float4";
+    case PG_TYPE_FLOAT8:        return "float8";
+	case PG_TYPE_DATE:			return "date";
+	case PG_TYPE_TIME:			return "time";
+	case PG_TYPE_ABSTIME:		return "abstime";
+	case PG_TYPE_DATETIME:		return "datetime";
+	case PG_TYPE_MONEY:			return "money";
+	case PG_TYPE_BOOL:			return "bool";
+	case PG_TYPE_BYTEA:			return "bytea";
+
+	/* "unknown" can actually be used in alter table because it is a real PG type! */
+    default:                    return "unknown";	
+    }    
+}
+
+/*	For PG_TYPE_VARCHAR, PG_TYPE_BPCHAR, SQLColumns will 
+	override this length with the atttypmod length from pg_attribute 
+*/
+Int4 pgtype_precision(Int4 type)
+{
+	switch(type) {
+
+	case PG_TYPE_CHAR:			return 1;
+	case PG_TYPE_CHAR2:			return 2;
+	case PG_TYPE_CHAR4:			return 4;
+	case PG_TYPE_CHAR8:       	return 8;
+	case PG_TYPE_CHAR16:       	return 16;
+
+	case PG_TYPE_NAME:			return 32;
+
+	case PG_TYPE_VARCHAR:
+	case PG_TYPE_BPCHAR:		return MAX_VARCHAR_SIZE;
+
+	case PG_TYPE_INT2:          return 5;
+
+	case PG_TYPE_OID:
+	case PG_TYPE_INT4:          return 10;
+
+	case PG_TYPE_FLOAT4:        
+	case PG_TYPE_MONEY:			return 7;
+
+	case PG_TYPE_FLOAT8:        return 15;
+
+	case PG_TYPE_DATE:			return 10;
+	case PG_TYPE_TIME:			return 8;
+
+	case PG_TYPE_ABSTIME:		
+	case PG_TYPE_DATETIME:		return 19;
+
+	case PG_TYPE_BOOL:			return 1;
+
+	default:
+		return TEXT_FIELD_SIZE;		/* text field types and unknown types */
+    }
+}
+
+/*	For PG_TYPE_VARCHAR, PG_TYPE_BPCHAR, SQLColumns will 
+	override this length with the atttypmod length from pg_attribute 
+*/
+Int4 pgtype_length(Int4 type)
+{
+	switch(type) {
+
+	case PG_TYPE_CHAR:			return 1;
+	case PG_TYPE_CHAR2:			return 2;
+	case PG_TYPE_CHAR4:			return 4;
+	case PG_TYPE_CHAR8:         return 8;
+	case PG_TYPE_CHAR16:        return 16;
+
+	case PG_TYPE_NAME:			return 32;
+
+	case PG_TYPE_VARCHAR:
+	case PG_TYPE_BPCHAR:		return MAX_VARCHAR_SIZE;
+
+	case PG_TYPE_INT2:          return 2;
+
+	case PG_TYPE_OID:
+	case PG_TYPE_INT4:          return 4;
+
+	case PG_TYPE_FLOAT4:
+	case PG_TYPE_MONEY:			return 4;
+
+	case PG_TYPE_FLOAT8:        return 8;
+
+	case PG_TYPE_DATE:
+	case PG_TYPE_TIME:			return 6;
+
+	case PG_TYPE_ABSTIME:		
+	case PG_TYPE_DATETIME:		return 16;
+
+	case PG_TYPE_BOOL:			return 1;
+
+	default:
+		return TEXT_FIELD_SIZE;		/* text field types and unknown types */
+    }
+}
+
+Int2 pgtype_scale(Int4 type)
+{
+	switch(type) {
+
+	case PG_TYPE_INT2:
+	case PG_TYPE_OID:
+	case PG_TYPE_INT4:
+	case PG_TYPE_FLOAT4:
+	case PG_TYPE_FLOAT8:
+	case PG_TYPE_MONEY:
+	case PG_TYPE_BOOL:
+
+	/*	Number of digits to the right of the decimal point in "yyyy-mm=dd hh:mm:ss[.f...]" */
+	case PG_TYPE_ABSTIME:		
+	case PG_TYPE_DATETIME:		return 0;
+
+	default:					return -1;
+	}
+}
+
+
+Int2 pgtype_radix(Int4 type)
+{
+    switch(type) {
+    case PG_TYPE_INT2:
+    case PG_TYPE_OID:
+    case PG_TYPE_INT4:
+    case PG_TYPE_FLOAT4:
+	case PG_TYPE_MONEY:
+    case PG_TYPE_FLOAT8:        return 10;
+
+    default:                    return -1;
+    }
+}
+
+Int2 pgtype_nullable(Int4 type)
+{
+	return SQL_NULLABLE;	/* everything should be nullable */
+}
+
+Int2 pgtype_auto_increment(Int4 type)
+{
+	switch(type) {
+
+	case PG_TYPE_INT2:         
+	case PG_TYPE_OID:
+	case PG_TYPE_INT4:         
+	case PG_TYPE_FLOAT4:       
+	case PG_TYPE_MONEY:
+	case PG_TYPE_BOOL:
+	case PG_TYPE_FLOAT8:
+
+	case PG_TYPE_DATE:
+	case PG_TYPE_TIME:			
+	case PG_TYPE_ABSTIME:		
+	case PG_TYPE_DATETIME:		return FALSE;
+
+	default:					return -1;
+	}    
+}
+
+Int2 pgtype_case_sensitive(Int4 type)
+{
+    switch(type) {
+    case PG_TYPE_CHAR:          
+
+	case PG_TYPE_CHAR2:
+	case PG_TYPE_CHAR4:
+    case PG_TYPE_CHAR8:         
+	case PG_TYPE_CHAR16:		
+
+    case PG_TYPE_VARCHAR:       
+    case PG_TYPE_BPCHAR:
+    case PG_TYPE_TEXT:
+    case PG_TYPE_NAME:          return TRUE;
+
+    default:                    return FALSE;
+    }
+}
+
+Int2 pgtype_money(Int4 type)
+{
+	switch(type) {
+	case PG_TYPE_MONEY:			return TRUE;
+	default:					return FALSE;
+	}    
+}
+
+Int2 pgtype_searchable(Int4 type)
+{
+	switch(type) {
+	case PG_TYPE_CHAR:          
+	case PG_TYPE_CHAR2:
+	case PG_TYPE_CHAR4:			
+	case PG_TYPE_CHAR8:
+	case PG_TYPE_CHAR16:		
+
+	case PG_TYPE_VARCHAR:       
+	case PG_TYPE_BPCHAR:
+	case PG_TYPE_TEXT:
+	case PG_TYPE_NAME:          return SQL_SEARCHABLE;
+
+	default:					return SQL_ALL_EXCEPT_LIKE;
+
+	}    
+}
+
+Int2 pgtype_unsigned(Int4 type)
+{
+	switch(type) {
+	case PG_TYPE_OID:			return TRUE;
+
+	case PG_TYPE_INT2:
+	case PG_TYPE_INT4:
+	case PG_TYPE_FLOAT4:
+	case PG_TYPE_FLOAT8:
+	case PG_TYPE_MONEY:			return FALSE;
+
+	default:					return -1;
+	}
+}
+
+char *pgtype_literal_prefix(Int4 type)
+{
+	switch(type) {
+
+	case PG_TYPE_INT2:
+	case PG_TYPE_OID:
+	case PG_TYPE_INT4:
+	case PG_TYPE_FLOAT4:
+	case PG_TYPE_FLOAT8:        
+	case PG_TYPE_MONEY:			return NULL;
+
+	default:					return "'";
+	}
+}
+
+char *pgtype_literal_suffix(Int4 type)
+{
+	switch(type) {
+
+	case PG_TYPE_INT2:
+	case PG_TYPE_OID:
+	case PG_TYPE_INT4:
+	case PG_TYPE_FLOAT4:
+	case PG_TYPE_FLOAT8:        
+	case PG_TYPE_MONEY:			return NULL;
+
+	default:					return "'";
+	}
+}
+
+char *pgtype_create_params(Int4 type)
+{
+	switch(type) {
+	case PG_TYPE_CHAR:
+	case PG_TYPE_VARCHAR:		return "max. length";
+	default:					return NULL;
+	}
+}
+
+
+Int2 sqltype_to_default_ctype(Int2 sqltype)
+{
+    // from the table on page 623 of ODBC 2.0 Programmer's Reference
+    // (Appendix D)
+    switch(sqltype) {
+    case SQL_CHAR: 
+    case SQL_VARCHAR:
+    case SQL_LONGVARCHAR:
+    case SQL_DECIMAL:
+    case SQL_NUMERIC:
+    case SQL_BIGINT:
+		return SQL_C_CHAR;
+
+    case SQL_BIT:
+		return SQL_C_BIT;
+
+    case SQL_TINYINT:
+		return SQL_C_STINYINT;
+
+    case SQL_SMALLINT:
+		return SQL_C_SSHORT;
+
+    case SQL_INTEGER:
+		return SQL_C_SLONG;
+
+    case SQL_REAL:
+		return SQL_C_FLOAT;
+
+    case SQL_FLOAT:
+    case SQL_DOUBLE:
+		return SQL_C_DOUBLE;
+
+    case SQL_BINARY:
+    case SQL_VARBINARY:
+    case SQL_LONGVARBINARY:
+		return SQL_C_BINARY;
+
+    case SQL_DATE:
+		return SQL_C_DATE;
+
+    case SQL_TIME:
+		return SQL_C_TIME;
+
+    case SQL_TIMESTAMP:
+		return SQL_C_TIMESTAMP;
+
+    default:			/* should never happen */
+		return SQL_C_CHAR;	
+    }
+}
+

src/interfaces/odbc/pgtypes.h

@@ -0,0 +1,81 @@
+
+/* File:            pgtypes.h
+ *
+ * Description:     See "pgtypes.c"
+ *
+ * Comments:        See "notice.txt" for copyright and license information.
+ *
+ */
+
+#ifndef __PGTYPES_H__
+#define __PGTYPES_H__
+
+/* the type numbers are defined by the OID's of the types' rows */
+/* in table pg_type */
+
+#define PG_UNKNOWN			-666	/* returned only from pgtype_to_sqltype() */
+
+#define PG_TYPE_BOOL         16
+#define PG_TYPE_BYTEA        17
+#define PG_TYPE_CHAR         18
+#define PG_TYPE_NAME         19
+#define PG_TYPE_CHAR16       20
+#define PG_TYPE_INT2         21
+#define PG_TYPE_INT28        22
+#define PG_TYPE_INT4         23
+#define PG_TYPE_REGPROC      24
+#define PG_TYPE_TEXT         25
+#define PG_TYPE_OID          26
+#define PG_TYPE_TID          27
+#define PG_TYPE_XID          28
+#define PG_TYPE_CID          29
+#define PG_TYPE_OID8         30
+#define PG_TYPE_SET          32
+#define PG_TYPE_CHAR2       409
+#define PG_TYPE_CHAR4       410
+#define PG_TYPE_CHAR8       411
+#define PG_TYPE_POINT       600
+#define PG_TYPE_LSEG        601
+#define PG_TYPE_PATH        602
+#define PG_TYPE_BOX         603
+#define PG_TYPE_POLYGON     604
+#define PG_TYPE_FILENAME    605
+#define PG_TYPE_FLOAT4      700
+#define PG_TYPE_FLOAT8      701
+#define PG_TYPE_ABSTIME     702
+#define PG_TYPE_RELTIME     703
+#define PG_TYPE_TINTERVAL   704
+#define PG_TYPE_UNKNOWN     705
+#define PG_TYPE_MONEY		790
+#define PG_TYPE_OIDINT2     810
+#define PG_TYPE_OIDINT4     910
+#define PG_TYPE_OIDNAME     911
+#define PG_TYPE_BPCHAR     1042
+#define PG_TYPE_VARCHAR    1043
+#define PG_TYPE_DATE       1082
+#define PG_TYPE_TIME       1083
+#define PG_TYPE_DATETIME   1184
+
+extern Int4 pgtypes_defined[];
+
+Int2 pgtype_to_sqltype(Int4 type);
+Int2 pgtype_to_ctype(Int4 type);
+char *pgtype_to_name(Int4 type);
+Int4 pgtype_precision(Int4 type);
+Int4 pgtype_length(Int4 type);
+Int2 pgtype_scale(Int4 type);
+Int2 pgtype_radix(Int4 type);
+Int2 pgtype_nullable(Int4 type);
+Int2 pgtype_auto_increment(Int4 type);
+Int2 pgtype_case_sensitive(Int4 type);
+Int2 pgtype_money(Int4 type);
+Int2 pgtype_searchable(Int4 type);
+Int2 pgtype_unsigned(Int4 type);
+char *pgtype_literal_prefix(Int4 type);
+char *pgtype_literal_suffix(Int4 type);
+char *pgtype_create_params(Int4 type);
+
+Int2 sqltype_to_default_ctype(Int2 sqltype);
+
+#endif
+

src/interfaces/odbc/psqlodbc.c

@@ -0,0 +1,146 @@
+
+/* Module:          psqlodbc.c
+ *
+ * Description:     This module contains the main entry point (DllMain) for the library.
+ *                  It also contains functions to get and set global variables for the
+ *                  driver in the registry.
+ *
+ * Classes:         n/a
+ *
+ * API functions:   none
+ *
+ * Comments:        See "notice.txt" for copyright and license information.
+ *
+ */
+
+#include "psqlodbc.h"
+#include <winsock.h>
+#include <windows.h>
+#include <sql.h>
+#include <odbcinst.h>
+
+HINSTANCE NEAR s_hModule;               /* Saved module handle. */
+GLOBAL_VALUES globals;
+
+
+/*	This function reads the ODBCINST.INI portion of
+	the registry and gets any driver defaults.
+*/
+void getGlobalDefaults(void)
+{
+char temp[128];
+
+
+	//	Fetch Count is stored in driver section
+    SQLGetPrivateProfileString(DBMS_NAME, INI_FETCH, "",
+                            temp, sizeof(temp), ODBCINST_INI);
+	if ( temp[0] )
+		globals.fetch_max = atoi(temp);
+	else
+		globals.fetch_max = FETCH_MAX;
+
+
+	//	Socket Buffersize is stored in driver section
+    SQLGetPrivateProfileString(DBMS_NAME, INI_SOCKET, "",
+                            temp, sizeof(temp), ODBCINST_INI);
+	if ( temp[0] ) 
+		globals.socket_buffersize = atoi(temp);
+	else
+		globals.socket_buffersize = SOCK_BUFFER_SIZE;
+
+
+	//	Debug is stored in the driver section
+	SQLGetPrivateProfileString(DBMS_NAME, INI_DEBUG, "0", 
+							temp, sizeof(temp), ODBCINST_INI);
+	globals.debug = atoi(temp);
+
+
+	//	CommLog is stored in the driver section
+	SQLGetPrivateProfileString(DBMS_NAME, INI_COMMLOG, "0", 
+							temp, sizeof(temp), ODBCINST_INI);
+	globals.commlog = atoi(temp);
+
+
+	//	Optimizer is stored in the driver section only (OFF, ON, or ON=x)
+	SQLGetPrivateProfileString(DBMS_NAME, INI_OPTIMIZER, "", 
+				globals.optimizer, sizeof(globals.optimizer), ODBCINST_INI);
+
+
+	//	ConnSettings is stored in the driver section and per datasource for override
+	SQLGetPrivateProfileString(DBMS_NAME, INI_CONNSETTINGS, "", 
+				globals.conn_settings, sizeof(globals.conn_settings), ODBCINST_INI);
+}
+
+
+/*	This function writes any global parameters (that can be manipulated)
+	to the ODBCINST.INI portion of the registry 
+*/
+void updateGlobals(void)
+{
+char tmp[128];
+
+	sprintf(tmp, "%d", globals.commlog);
+	SQLWritePrivateProfileString(DBMS_NAME,
+		INI_COMMLOG, tmp, ODBCINST_INI);
+}
+
+/*	This is where the Driver Manager attaches to this Driver */
+BOOL WINAPI DllMain(HANDLE hInst, ULONG ul_reason_for_call, LPVOID lpReserved) 
+{
+WORD wVersionRequested; 
+WSADATA wsaData; 
+
+	switch (ul_reason_for_call) {
+	case DLL_PROCESS_ATTACH:
+		s_hModule = hInst;				/* Save for dialog boxes */
+
+		/*	Load the WinSock Library */
+		wVersionRequested = MAKEWORD(1, 1); 
+
+		if ( WSAStartup(wVersionRequested, &wsaData))
+			return FALSE;
+
+		/*	Verify that this is the minimum version of WinSock */
+		if ( LOBYTE( wsaData.wVersion ) != 1 || 
+			HIBYTE( wsaData.wVersion ) != 1 ) { 
+
+			WSACleanup(); 
+			return FALSE;
+		}
+
+		getGlobalDefaults();
+		break;
+
+	case DLL_THREAD_ATTACH:
+		break;
+
+	case DLL_PROCESS_DETACH:
+
+		WSACleanup();
+
+		return TRUE;
+
+	case DLL_THREAD_DETACH:
+		break;
+
+	default:
+		break;
+	}
+
+	return TRUE;                                                                
+                                                                                
+	UNREFERENCED_PARAMETER(lpReserved);                                         
+}
+
+/*	This function is used to cause the Driver Manager to
+	call functions by number rather than name, which is faster.
+	The ordinal value of this function must be 199 to have the
+	Driver Manager do this.  Also, the ordinal values of the
+	functions must match the value of fFunction in SQLGetFunctions()
+*/
+RETCODE SQL_API SQLDummyOrdinal(void)
+{
+	return SQL_SUCCESS;
+}
+
+

src/interfaces/odbc/psqlodbc.def

@@ -0,0 +1,60 @@
+LIBRARY psqlodbc
+EXPORTS
+SQLAllocConnect @1
+SQLAllocEnv @2
+SQLAllocStmt @3
+SQLBindCol @4
+SQLCancel @5
+SQLColAttributes @6
+SQLConnect @7
+SQLDescribeCol @8
+SQLDisconnect @9
+SQLError @10
+SQLExecDirect @11
+SQLExecute @12
+SQLFetch @13
+SQLFreeConnect @14
+SQLFreeEnv @15
+SQLFreeStmt @16
+SQLGetCursorName @17
+SQLNumResultCols @18
+SQLPrepare @19
+SQLRowCount @20
+SQLSetCursorName @21
+SQLTransact @23
+SQLColumns @40
+SQLDriverConnect @41
+SQLGetConnectOption @42
+SQLGetData @43
+SQLGetFunctions @44
+SQLGetInfo @45
+SQLGetStmtOption @46
+SQLGetTypeInfo @47
+SQLParamData @48
+SQLPutData @49
+SQLSetConnectOption @50
+SQLSetStmtOption @51
+SQLSpecialColumns @52
+SQLStatistics @53
+SQLTables @54
+SQLBrowseConnect @55
+SQLColumnPrivileges @56
+SQLDescribeParam @58
+SQLExtendedFetch @59
+SQLForeignKeys @60
+SQLMoreResults @61
+SQLNativeSql @62
+SQLNumParams @63
+SQLParamOptions @64
+SQLPrimaryKeys @65
+SQLProcedureColumns @66
+SQLProcedures @67
+SQLSetPos @68
+SQLSetScrollOptions @69
+SQLTablePrivileges @70
+SQLBindParameter @72
+SQLDummyOrdinal @199
+dconn_FDriverConnectProc @200
+DllMain @201
+ConfigDSN @202
+

src/interfaces/odbc/psqlodbc.h

@@ -0,0 +1,120 @@
+
+/* File:            psqlodbc.h
+ *
+ * Description:     This file contains defines and declarations that are related to
+ *                  the entire driver.
+ *
+ * Comments:        See "notice.txt" for copyright and license information.
+ *
+ */
+
+#ifndef __PSQLODBC_H__
+#define __PSQLODBC_H__
+
+#define Int4 int
+#define UInt4 unsigned int
+#define Int2 short
+#define UInt2 unsigned short
+
+typedef UInt4 Oid;
+
+
+/* Limits */
+#define MAX_MESSAGE_LEN				8192
+#define MAX_CONNECT_STRING			4096
+#define ERROR_MSG_LENGTH			4096
+#define FETCH_MAX					100		/* default number of rows to cache for declare/fetch */
+#define SOCK_BUFFER_SIZE			4096	/* default socket buffer size */
+#define MAX_CONNECTIONS				128		/* conns per environment (arbitrary)  */
+#define MAX_FIELDS					512
+#define BYTELEN						8
+#define VARHDRSZ					sizeof(Int4)
+
+/*	Registry length limits */
+#define LARGE_REGISTRY_LEN			4096	/* used for special cases */
+#define MEDIUM_REGISTRY_LEN			128		/* normal size for user,database,etc. */
+#define SMALL_REGISTRY_LEN			10		/* for 1/0 settings */
+
+
+/*	Connection Defaults */
+#define DEFAULT_PORT				"5432"
+#define DEFAULT_READONLY			"1"
+
+/*	These prefixes denote system tables */
+#define INSIGHT_SYS_PREFIX	"dd_"
+#define POSTGRES_SYS_PREFIX	"pg_"
+#define KEYS_TABLE			"dd_fkey"
+
+/*	Info limits */
+#define MAX_INFO_STRING		128
+#define MAX_KEYPARTS		20
+#define MAX_KEYLEN			512			//	max key of the form "date+outlet+invoice"
+#define MAX_STATEMENT_LEN	MAX_MESSAGE_LEN
+
+/* Driver stuff */
+#define DRIVERNAME             "PostgreSQL ODBC"
+#define DBMS_NAME              "PostgreSQL"
+#define DBMS_VERSION           "06.30.0000 PostgreSQL 6.3"
+#define POSTGRESDRIVERVERSION  "06.30.0000"
+#define DRIVER_FILE_NAME		"PSQLODBC.DLL"
+
+
+#define PG62	"6.2"		/* "Protocol" key setting to force Postgres 6.2 */
+
+/* INI File Stuff */
+#define ODBC_INI     "ODBC.INI"         /* ODBC initialization file */
+#define ODBCINST_INI "ODBCINST.INI"		/* ODBC Installation file */
+
+#define INI_DSN           DBMS_NAME         /* Name of default Datasource in ini file (not used?) */
+#define INI_KDESC         "Description"     /* Data source description */
+#define INI_SERVER        "Servername"      /* Name of Server running the Postgres service */
+#define INI_PORT          "Port"            /* Port on which the Postmaster is listening */ 
+#define INI_DATABASE      "Database"        /* Database Name */
+#define INI_USER          "Username"        /* Default User Name */
+#define INI_PASSWORD      "Password"		/* Default Password */
+#define INI_DEBUG         "Debug"			/* Debug flag */
+#define INI_FETCH         "Fetch"			/* Fetch Max Count */
+#define INI_SOCKET        "Socket"			/* Socket buffer size */
+#define INI_READONLY      "ReadOnly"		/* Database is read only */
+#define INI_COMMLOG       "CommLog"			/* Communication to backend logging */
+#define INI_PROTOCOL      "Protocol"		/* What protocol (6.2) */
+#define INI_OPTIMIZER     "Optimizer"		/* Use backend genetic optimizer */
+#define INI_CONNSETTINGS  "ConnSettings"	/* Anything to send to backend on successful connection */
+
+
+typedef struct ConnectionClass_ ConnectionClass;
+typedef struct StatementClass_ StatementClass;
+typedef struct QResultClass_ QResultClass;
+typedef struct SocketClass_ SocketClass;
+typedef struct BindInfoClass_ BindInfoClass;
+typedef struct ParameterInfoClass_ ParameterInfoClass;
+typedef struct ColumnInfoClass_ ColumnInfoClass;
+typedef struct TupleListClass_ TupleListClass;
+typedef struct EnvironmentClass_ EnvironmentClass;
+typedef struct TupleNode_ TupleNode;
+typedef struct TupleField_ TupleField;
+
+
+typedef struct GlobalValues_
+{
+	int					fetch_max;
+	int					socket_buffersize;
+	int					debug;
+	int					commlog;
+	char				optimizer[MEDIUM_REGISTRY_LEN];
+	char				conn_settings[LARGE_REGISTRY_LEN];
+} GLOBAL_VALUES;
+
+
+/* sizes */
+#define TEXT_FIELD_SIZE			4094	/* size of text fields (not including null term) */
+#define MAX_VARCHAR_SIZE		254		/* maximum size of a varchar (not including null term) */
+
+
+/* global prototypes */
+void updateGlobals(void);
+
+
+#include "misc.h"
+
+#endif

src/interfaces/odbc/psqlodbc.rc

@@ -0,0 +1,205 @@
+//Microsoft Developer Studio generated resource script.
+//
+#include "resource.h"
+
+#define APSTUDIO_READONLY_SYMBOLS
+/////////////////////////////////////////////////////////////////////////////
+//
+// Generated from the TEXTINCLUDE 2 resource.
+//
+#include "afxres.h"
+
+/////////////////////////////////////////////////////////////////////////////
+#undef APSTUDIO_READONLY_SYMBOLS
+
+/////////////////////////////////////////////////////////////////////////////
+// English (U.S.) resources
+
+#if !defined(AFX_RESOURCE_DLL) || defined(AFX_TARG_ENU)
+#ifdef _WIN32
+LANGUAGE LANG_ENGLISH, SUBLANG_ENGLISH_US
+#pragma code_page(1252)
+#endif //_WIN32
+
+#ifdef APSTUDIO_INVOKED
+/////////////////////////////////////////////////////////////////////////////
+//
+// TEXTINCLUDE
+//
+
+1 TEXTINCLUDE DISCARDABLE 
+BEGIN
+    "resource.h\0"
+END
+
+2 TEXTINCLUDE DISCARDABLE 
+BEGIN
+    "#include ""afxres.h""\r\n"
+    "\0"
+END
+
+3 TEXTINCLUDE DISCARDABLE 
+BEGIN
+    "\r\n"
+    "\0"
+END
+
+#endif    // APSTUDIO_INVOKED
+
+
+/////////////////////////////////////////////////////////////////////////////
+//
+// Dialog
+//
+
+DRIVERCONNDIALOG DIALOG DISCARDABLE  0, 0, 269, 133
+STYLE DS_MODALFRAME | WS_POPUP | WS_CAPTION | WS_SYSMENU
+CAPTION "PostgreSQL Connection"
+FONT 8, "MS Sans Serif"
+BEGIN
+    RTEXT           "&Database:",IDC_STATIC,16,25,37,8
+    EDITTEXT        DATABASE_EDIT,55,25,72,12,ES_AUTOHSCROLL
+    RTEXT           "&Server:",IDC_STATIC,26,40,27,8
+    EDITTEXT        SERVER_EDIT,55,40,72,12,ES_AUTOHSCROLL
+    RTEXT           "&Port:",IDC_STATIC,150,40,20,8
+    EDITTEXT        PORT_EDIT,172,40,72,12,ES_AUTOHSCROLL
+    RTEXT           "&User Name:",IDC_STATIC,16,56,37,8
+    EDITTEXT        USERNAME_EDIT,55,56,72,12,ES_AUTOHSCROLL
+    RTEXT           "Pass&word:",IDC_STATIC,137,56,33,8
+    EDITTEXT        PASSWORD_EDIT,172,56,72,12,ES_PASSWORD | ES_AUTOHSCROLL
+    GROUPBOX        "Options:",IDC_STATIC,25,71,200,25
+    CONTROL         "&ReadOnly:",READONLY_EDIT,"Button",BS_AUTOCHECKBOX | 
+                    BS_LEFTTEXT | BS_RIGHT | WS_GROUP | WS_TABSTOP,45,80,45,
+                    14
+    CONTROL         "&CommLog (Global):",COMMLOG_EDIT,"Button",
+                    BS_AUTOCHECKBOX | BS_LEFTTEXT | BS_RIGHT | WS_TABSTOP,
+                    100,80,75,14
+    CONTROL         "6.2",PG62_EDIT,"Button",BS_AUTOCHECKBOX | BS_LEFTTEXT | 
+                    BS_RIGHT | WS_TABSTOP,185,80,25,14
+    DEFPUSHBUTTON   "OK",IDOK,84,108,40,14,WS_GROUP
+    PUSHBUTTON      "Cancel",IDCANCEL,146,108,40,14
+    CTEXT           "Please supply any missing information needed to connect.",
+                    IDC_STATIC,40,7,188,11
+END
+
+CONFIGDSN DIALOG DISCARDABLE  65, 43, 292, 151
+STYLE DS_MODALFRAME | DS_3DLOOK | WS_POPUP | WS_VISIBLE | WS_CAPTION | 
+    WS_SYSMENU
+CAPTION "PostgreSQL Driver Setup"
+FONT 8, "MS Sans Serif"
+BEGIN
+    RTEXT           "&Data Source:",IDC_DSNAMETEXT,5,30,50,12,NOT WS_GROUP
+    EDITTEXT        IDC_DSNAME,57,30,72,12,ES_AUTOHSCROLL | WS_GROUP
+    RTEXT           "Des&cription:",IDC_STATIC,135,30,39,12,NOT WS_GROUP
+    EDITTEXT        IDC_DESC,175,30,108,12,ES_AUTOHSCROLL
+    RTEXT           "Data&base:",IDC_STATIC,17,45,38,12,NOT WS_GROUP
+    EDITTEXT        IDC_DATABASE,57,45,72,12,ES_AUTOHSCROLL
+    RTEXT           "&Server:",IDC_STATIC,27,60,29,12,NOT WS_GROUP
+    EDITTEXT        IDC_SERVER,57,60,72,12,ES_AUTOHSCROLL
+    RTEXT           "&Port:",IDC_STATIC,153,60,22,12
+    EDITTEXT        IDC_PORT,175,60,37,12,ES_AUTOHSCROLL
+    RTEXT           "&User Name:",IDC_STATIC,17,75,39,12
+    EDITTEXT        IDC_USER,57,75,72,12,ES_AUTOHSCROLL
+    RTEXT           "Pass&word:",IDC_STATIC,141,75,34,12
+    EDITTEXT        IDC_PASSWORD,175,75,72,12,ES_PASSWORD | ES_AUTOHSCROLL
+    GROUPBOX        "Options:",IDC_STATIC,35,92,205,25
+    CONTROL         "&ReadOnly:",IDC_READONLY,"Button",BS_AUTOCHECKBOX | 
+                    BS_LEFTTEXT | BS_RIGHT | WS_GROUP | WS_TABSTOP,50,100,45,
+                    14
+    CONTROL         "&CommLog (Global):",IDC_COMMLOG,"Button",
+                    BS_AUTOCHECKBOX | BS_LEFTTEXT | BS_RIGHT | WS_TABSTOP,
+                    105,100,75,14
+    CONTROL         "6.2",IDC_PG62,"Button",BS_AUTOCHECKBOX | BS_LEFTTEXT | 
+                    BS_RIGHT | WS_TABSTOP,195,100,25,14
+    DEFPUSHBUTTON   "OK",IDOK,85,129,40,14,WS_GROUP
+    PUSHBUTTON      "Cancel",IDCANCEL,145,129,40,14
+    CTEXT           "Change data source name, description, or options.  Then choose OK.",
+                    IDC_STATIC,44,5,180,17
+END
+
+
+/////////////////////////////////////////////////////////////////////////////
+//
+// DESIGNINFO
+//
+
+#ifdef APSTUDIO_INVOKED
+GUIDELINES DESIGNINFO DISCARDABLE 
+BEGIN
+    DRIVERCONNDIALOG, DIALOG
+    BEGIN
+        RIGHTMARGIN, 268
+    END
+END
+#endif    // APSTUDIO_INVOKED
+
+
+#ifndef _MAC
+/////////////////////////////////////////////////////////////////////////////
+//
+// Version
+//
+
+VS_VERSION_INFO VERSIONINFO
+ FILEVERSION 6,30,0,0
+ PRODUCTVERSION 6,30,0,0
+ FILEFLAGSMASK 0x3L
+#ifdef _DEBUG
+ FILEFLAGS 0x1L
+#else
+ FILEFLAGS 0x0L
+#endif
+ FILEOS 0x4L
+ FILETYPE 0x2L
+ FILESUBTYPE 0x0L
+BEGIN
+    BLOCK "StringFileInfo"
+    BEGIN
+        BLOCK "040904e4"
+        BEGIN
+            VALUE "Comments", "PostgreSQL ODBC driver for Windows 95\0"
+            VALUE "CompanyName", "Insight Distribution Systems\0"
+            VALUE "FileDescription", "PostgreSQL Driver\0"
+            VALUE "FileVersion", " 6.30.0000\0"
+            VALUE "InternalName", "psqlodbc\0"
+            VALUE "LegalTrademarks", "ODBC(TM) is a trademark of Microsoft Corporation.  Microsoft<66> is a registered trademark of Microsoft Corporation. Windows(TM) is a trademark of Microsoft Corporation.\0"
+            VALUE "OriginalFilename", "psqlodbc.dll\0"
+            VALUE "ProductName", "Microsoft Open Database Connectivity\0"
+            VALUE "ProductVersion", " 6.30.0000\0"
+        END
+    END
+    BLOCK "VarFileInfo"
+    BEGIN
+        VALUE "Translation", 0x409, 1252
+    END
+END
+
+#endif    // !_MAC
+
+
+/////////////////////////////////////////////////////////////////////////////
+//
+// String Table
+//
+
+STRINGTABLE DISCARDABLE 
+BEGIN
+    IDS_BADDSN              "Invalid DSN entry, please recheck."
+    IDS_MSGTITLE            "Invalid DSN"
+END
+
+#endif    // English (U.S.) resources
+/////////////////////////////////////////////////////////////////////////////
+
+
+
+#ifndef APSTUDIO_INVOKED
+/////////////////////////////////////////////////////////////////////////////
+//
+// Generated from the TEXTINCLUDE 3 resource.
+//
+
+
+/////////////////////////////////////////////////////////////////////////////
+#endif    // not APSTUDIO_INVOKED
+

src/interfaces/odbc/qresult.c

@@ -0,0 +1,472 @@
+
+/* Module:          qresult.c
+ *
+ * Description:     This module contains functions related to 
+ *                  managing result information (i.e, fetching rows from the backend,
+ *                  managing the tuple cache, etc.) and retrieving it.
+ *                  Depending on the situation, a QResultClass will hold either data
+ *                  from the backend or a manually built result (see "qresult.h" to
+ *                  see which functions/macros are for manual or backend results.
+ *                  For manually built results, the QResultClass simply points to 
+ *                  TupleList and ColumnInfo structures, which actually hold the data.
+ *
+ * Classes:         QResultClass (Functions prefix: "QR_")
+ *
+ * API functions:   none
+ *
+ * Comments:        See "notice.txt" for copyright and license information.
+ *
+ */
+
+#include "qresult.h"
+#include "misc.h"
+#include <stdio.h>
+
+extern GLOBAL_VALUES globals;
+
+/*  Used for building a Manual Result only */
+/*	All info functions call this function to create the manual result set. */
+void 
+QR_set_num_fields(QResultClass *self, int new_num_fields)
+{
+	mylog("in QR_set_num_fields\n");
+
+    CI_set_num_fields(self->fields, new_num_fields);
+    if(self->manual_tuples) 
+        TL_Destructor(self->manual_tuples);
+
+    self->manual_tuples = TL_Constructor(new_num_fields);
+
+	mylog("exit QR_set_num_fields\n");
+}
+
+/************************************/
+/* CLASS QResult                    */
+/************************************/
+
+QResultClass *
+QR_Constructor()
+{
+QResultClass *rv;
+
+	mylog("in QR_Constructor\n");
+	rv = (QResultClass *) malloc(sizeof(QResultClass));
+
+	if (rv != NULL) {
+		rv->status = PGRES_EMPTY_QUERY;
+
+		/* construct the column info */
+		if ( ! (rv->fields = CI_Constructor())) {
+			free(rv);
+			return NULL;
+		}
+		rv->manual_tuples = NULL;	
+		rv->backend_tuples = NULL;	
+		rv->message = NULL;
+		rv->command = NULL;
+		rv->notice = NULL;
+		rv->conn = NULL;
+		rv->inTuples = FALSE;
+		rv->fcount = 0;
+		rv->fetch_count = 0;
+		rv->num_fields = 0;
+		rv->tupleField = NULL;
+		rv->cursor = NULL;
+	}
+
+	mylog("exit QR_Constructor\n");
+	return rv;
+}
+
+void
+QR_Destructor(QResultClass *self)
+{
+	mylog("QResult: in DESTRUCTOR\n");
+
+	/* manual result set tuples */
+	if (self->manual_tuples)
+		TL_Destructor(self->manual_tuples);
+
+	//	If conn is defined, then we may have used "backend_tuples",
+	//	so in case we need to, free it up.  Also, close the cursor.
+	if (self->conn && self->conn->sock && CC_is_in_trans(self->conn))
+		QR_close(self);			// close the cursor if there is one
+
+	QR_free_memory(self);	// safe to call anyway
+
+	//	Should have been freed in the close() but just in case...
+	if (self->cursor)
+		free(self->cursor);
+
+	/*	Free up column info */
+	if (self->fields)
+		CI_Destructor(self->fields);
+
+	/*	Free command info (this is from strdup()) */
+	if (self->command)
+		free(self->command);
+
+	/*	Free notice info (this is from strdup()) */
+	if (self->notice)
+		free(self->notice);
+
+	free(self);
+
+	mylog("QResult: exit DESTRUCTOR\n");
+
+}
+
+void
+QR_set_command(QResultClass *self, char *msg)
+{
+	if (self->command)
+		free(self->command);
+
+	self->command = msg ? strdup(msg) : NULL;
+}
+
+void 
+QR_set_notice(QResultClass *self, char *msg)
+{
+	if (self->notice)
+		free(self->notice);
+
+	self->notice = msg ? strdup(msg) : NULL;
+}
+
+void 
+QR_free_memory(QResultClass *self)
+{
+register int lf, row;
+register TupleField *tuple = self->backend_tuples;
+int fcount = self->fcount;
+int num_fields = self->num_fields;
+
+	mylog("QResult: free memory in, fcount=%d\n", fcount);
+
+	if ( self->backend_tuples) {
+
+		for (row = 0; row < fcount; row++) {
+			mylog("row = %d, num_fields = %d\n", row, num_fields);
+			for (lf=0; lf < num_fields; lf++) {
+				if (tuple[lf].value != NULL) {
+					mylog("free [lf=%d] %u\n", lf, tuple[lf].value);
+					free(tuple[lf].value);
+				}
+			}
+			tuple += num_fields;  // next row
+		}
+
+		free(self->backend_tuples);
+		self->backend_tuples = NULL;
+	}
+
+	self->fcount = 0;
+
+	mylog("QResult: free memory out\n");
+}
+
+//	This function is called by send_query()
+char
+QR_fetch_tuples(QResultClass *self, ConnectionClass *conn, char *cursor)
+{
+	//	If called from send_query the first time (conn != NULL), 
+	//	then set the inTuples state,
+	//	and read the tuples.  If conn is NULL,
+	//	it implies that we are being called from next_tuple(),
+	//	like to get more rows so don't call next_tuple again!
+	if (conn != NULL) {
+		self->conn = conn;
+
+		mylog("QR_fetch_tuples: cursor = '%s', self->cursor=%u\n", cursor, self->cursor);
+
+		if (self->cursor)
+			free(self->cursor);
+
+		if ( ! cursor || cursor[0] == '\0') {
+			self->status = PGRES_INTERNAL_ERROR;
+			QR_set_message(self, "Internal Error -- no cursor for fetch");
+			return FALSE;
+		}
+		self->cursor = strdup(cursor);
+
+		//	Read the field attributes.
+		//	$$$$ Should do some error control HERE! $$$$
+		if ( CI_read_fields(self->fields, CC_get_socket(self->conn))) {
+			self->status = PGRES_FIELDS_OK;
+			self->num_fields = CI_get_num_fields(self->fields);
+		}
+		else {
+			self->status = PGRES_BAD_RESPONSE;
+			QR_set_message(self, "Error reading field information");
+			return FALSE;
+		}
+
+		mylog("QR_fetch_tuples: past CI_read_fields: num_fields = %d\n", self->num_fields);
+
+		/* allocate memory for the tuple cache */
+		self->backend_tuples = (TupleField *) malloc(self->num_fields * sizeof(TupleField) * globals.fetch_max);
+		if ( ! self->backend_tuples) {
+			self->status = PGRES_FATAL_ERROR; 
+			QR_set_message(self, "Could not get memory for tuple cache.");
+			return FALSE;
+		}
+
+		self->inTuples = TRUE;
+
+		/*  Force a read to occur in next_tuple */
+		self->fcount = globals.fetch_max+1;
+		self->fetch_count = globals.fetch_max+1;
+
+		return QR_next_tuple(self);
+	}
+	else {
+		//	Always have to read the field attributes.
+		//	But we dont have to reallocate memory for them!
+
+		if ( ! CI_read_fields(NULL, CC_get_socket(self->conn))) {
+			self->status = PGRES_BAD_RESPONSE;
+			QR_set_message(self, "Error reading field information");
+			return FALSE;
+		}
+	}
+}
+
+//	Close the cursor and end the transaction
+//	We only close cursor/end the transaction if a cursor was used.
+int
+QR_close(QResultClass *self)
+{
+QResultClass *res;
+
+	if (self->conn && self->cursor) {
+		char buf[64];
+
+		sprintf(buf, "close %s; END", self->cursor);
+
+		mylog("QResult: closing cursor: '%s'\n", buf);
+
+		res = CC_send_query(self->conn, buf, NULL, NULL);
+		CC_set_no_trans(self->conn);
+
+		self->inTuples = FALSE;
+		free(self->cursor);
+		self->cursor = NULL;
+
+		if (res == NULL) {
+			self->status = PGRES_FATAL_ERROR;
+			QR_set_message(self, "Error closing cursor.");
+			return FALSE;
+		}
+
+	}
+
+	return TRUE;
+}
+
+//	This function is called by fetch_tuples() AND SQLFetch()
+int
+QR_next_tuple(QResultClass *self)
+{
+int id;
+QResultClass *res;
+SocketClass *sock;
+/* Speed up access */
+int fetch_count = self->fetch_count;
+int fcount = self->fcount;
+TupleField *the_tuples = self->backend_tuples;
+static char msgbuffer[MAX_MESSAGE_LEN+1];
+char cmdbuffer[MAX_MESSAGE_LEN+1];	// QR_set_command() dups this string so dont need static
+
+	if (fetch_count < fcount) {	/* return a row from cache */
+		mylog("next_tuple: fetch_count < fcount: returning tuple %d, fcount = %d\n", fetch_count, fcount);
+		self->tupleField = the_tuples + (fetch_count * self->num_fields); /* next row */
+		self->fetch_count++;
+		return TRUE;
+	}
+	else if (self->fcount < globals.fetch_max) {   /* last row from cache */
+			//	We are done because we didn't even get FETCH_MAX tuples
+		  mylog("next_tuple: fcount < FETCH_MAX: fcount = %d, fetch_count = %d\n", fcount, fetch_count);
+		  self->tupleField = NULL;
+		  self->status = PGRES_END_TUPLES;
+		  return -1;	/* end of tuples */
+	}
+	else {	
+		/*	See if we need to fetch another group of rows.
+			We may be being called from send_query(), and
+			if so, don't send another fetch, just fall through
+			and read the tuples.
+		*/
+		self->tupleField = NULL;
+		if ( ! self->inTuples) {
+			char fetch[128];
+
+			sprintf(fetch, "fetch %d in %s", globals.fetch_max, self->cursor);
+
+			mylog("next_tuple: sending actual fetch (%d) query '%s'\n", globals.fetch_max, fetch);
+
+			//	don't read ahead for the next tuple (self) !
+			res = CC_send_query(self->conn, fetch, self, NULL);
+			if (res == NULL) {
+				self->status = PGRES_FATAL_ERROR;
+				QR_set_message(self, "Error fetching next group.");
+				return FALSE;
+			}
+			self->inTuples = TRUE;
+			/* This is a true fetch, like SQLFetch() */
+			self->fetch_count = 1;		
+		}
+		else {
+			mylog("next_tuple: inTuples = true, falling through: fcount = %d, fetch_count = %d\n", self->fcount, self->fetch_count);
+			/*	This is a pre-fetch (fetching rows right after query
+				but before any real SQLFetch() calls.  This is done
+				so the field attributes are available.
+			*/
+			self->fetch_count = 0;
+		}
+		// fall through and read the next group
+	}
+
+
+	self->fcount = 0;
+	sock = CC_get_socket(self->conn);
+	self->tupleField = NULL;
+
+	for ( ; ;) {
+
+		id = SOCK_get_char(sock);
+		switch (id) {
+			case 'T': /* Tuples within tuples cannot be handled */
+			  self->status = PGRES_BAD_RESPONSE;
+			  QR_set_message(self, "Tuples within tuples cannot be handled");
+			  return FALSE;
+			case 'B': /* Tuples in binary format */
+			case 'D': /* Tuples in ASCII format  */
+			  if ( ! QR_read_tuple(self, (char) (id == 0))) {
+				 self->status = PGRES_BAD_RESPONSE;
+				 QR_set_message(self, "Error reading the tuple");
+				 return FALSE;
+			  }
+
+			  self->fcount++;
+			  break;	// continue reading
+
+
+			case 'C': /* End of tuple list */
+			  SOCK_get_string(sock, cmdbuffer, MAX_MESSAGE_LEN);
+			  QR_set_command(self, cmdbuffer);
+
+			  mylog("end of tuple list -- setting inUse to false: this = %u\n", self);
+
+				self->inTuples = FALSE;
+				if (self->fcount > 0) {
+
+					qlog("    [ fetched %d rows ]\n", self->fcount);
+					mylog("_next_tuple: 'C' fetch_max && fcount = %d\n", self->fcount);
+
+					/*  set to first row */
+					self->tupleField = the_tuples;
+					return TRUE;
+				} 
+				else { //	We are surely done here (we read 0 tuples)
+					qlog("    [ fetched 0 rows ]\n");
+					mylog("_next_tuple: 'C': DONE (fcount == 0)\n");
+					return -1;	/* end of tuples */
+				}
+
+			case 'E': /* Error */
+			  SOCK_get_string(sock, msgbuffer, ERROR_MSG_LENGTH);
+			  QR_set_message(self, msgbuffer);
+			  self->status = PGRES_FATAL_ERROR;
+ 			  CC_set_no_trans(self->conn);
+				qlog("ERROR from backend in next_tuple: '%s'\n", msgbuffer);
+
+			  return FALSE;
+
+			case 'N': /* Notice */
+			  SOCK_get_string(sock, msgbuffer, ERROR_MSG_LENGTH);
+			  QR_set_message(self, msgbuffer);
+			  self->status = PGRES_NONFATAL_ERROR;
+				qlog("NOTICE from backend in next_tuple: '%s'\n", msgbuffer);
+			  continue;
+
+			default: /* this should only happen if the backend dumped core */
+			  QR_set_message(self, "Unexpected result from backend. It probably crashed");
+			  self->status = PGRES_FATAL_ERROR;
+ 			  CC_set_no_trans(self->conn);
+			  return FALSE;
+		}
+	}
+	return TRUE;
+}
+
+char
+QR_read_tuple(QResultClass *self, char binary)
+{
+Int2 field_lf;
+TupleField *this_tuplefield;
+char bmp, bitmap[MAX_FIELDS];        /* Max. len of the bitmap */
+Int2 bitmaplen;                       /* len of the bitmap in bytes */
+Int2 bitmap_pos;
+Int2 bitcnt;
+Int4 len;
+char *buffer;
+int num_fields = self->num_fields;	// speed up access
+SocketClass *sock = CC_get_socket(self->conn);
+
+
+	/* set the current row to read the fields into */
+	this_tuplefield = self->backend_tuples + (self->fcount * num_fields);
+
+	bitmaplen = (Int2) num_fields / BYTELEN;
+	if ((num_fields % BYTELEN) > 0)
+		bitmaplen++;
+
+	/*
+		At first the server sends a bitmap that indicates which
+		database fields are null
+	*/
+	SOCK_get_n_char(sock, bitmap, bitmaplen);
+
+	bitmap_pos = 0;
+	bitcnt = 0;
+	bmp = bitmap[bitmap_pos];
+
+	for(field_lf = 0; field_lf < num_fields; field_lf++) {
+		/* Check if the current field is NULL */
+		if(!(bmp & 0200)) {
+			/* YES, it is NULL ! */
+			this_tuplefield[field_lf].len = 0;
+			this_tuplefield[field_lf].value = 0;
+		} else {
+			/*
+			NO, the field is not null. so get at first the
+			length of the field (four bytes)
+			*/
+			len = SOCK_get_int(sock, VARHDRSZ);
+			if (!binary)
+				len -= VARHDRSZ;
+
+			buffer = (char *)malloc(len+1);
+			SOCK_get_n_char(sock, buffer, len);
+			buffer[len] = '\0';
+
+			// mylog("qresult: len=%d, buffer='%s'\n", len, buffer);
+
+			this_tuplefield[field_lf].len = len;
+			this_tuplefield[field_lf].value = buffer;
+		}
+		/*
+		Now adjust for the next bit to be scanned in the
+		next loop.
+		*/
+		bitcnt++;
+		if (BYTELEN == bitcnt) {
+			bitmap_pos++;
+			bmp = bitmap[bitmap_pos];
+			bitcnt = 0;
+		} else
+			bmp <<= 1;
+	}
+	return TRUE;
+}

src/interfaces/odbc/qresult.h

@@ -0,0 +1,105 @@
+
+/* File:            qresult.h
+ *
+ * Description:     See "qresult.c"
+ *
+ * Comments:        See "notice.txt" for copyright and license information.
+ *
+ */
+
+#ifndef __QRESULT_H__
+#define __QRESULT_H__
+
+#include "connection.h"
+#include "socket.h"
+#include "columninfo.h"
+#include "tuplelist.h"
+#include "psqlodbc.h"
+#include "tuple.h"
+
+enum QueryResultCode_ {
+  PGRES_EMPTY_QUERY = 0,
+  PGRES_COMMAND_OK,  /* a query command that doesn't return */
+                    /* anything was executed properly by the backend */
+  PGRES_TUPLES_OK,  /* a query command that returns tuples */
+                   /* was executed properly by the backend, PGresult */
+                   /* contains the resulttuples */
+  PGRES_COPY_OUT,
+  PGRES_COPY_IN,
+  PGRES_BAD_RESPONSE, /* an unexpected response was recv'd from the backend */
+  PGRES_NONFATAL_ERROR,
+  PGRES_FATAL_ERROR,
+  PGRES_FIELDS_OK,	/* field information from a query was successful */
+  PGRES_END_TUPLES,
+  PGRES_INTERNAL_ERROR
+};
+typedef enum QueryResultCode_ QueryResultCode;
+
+
+struct QResultClass_ {
+    ColumnInfoClass *fields;			// the Column information
+    TupleListClass *manual_tuples;		// manual result tuple list
+	ConnectionClass *conn;				// the connection this result is using (backend)
+
+	//	Stuff for declare/fetch tuples
+	int fetch_count;					// logical rows read so far
+	int fcount;							// actual rows read in the fetch
+
+	int num_fields;						// number of fields in the result
+    QueryResultCode status;
+
+    char *message;
+	char *cursor;						// The name of the cursor for select statements
+	char *command;
+	char *notice;
+
+	TupleField *backend_tuples;			// data from the backend (the tuple cache)
+	TupleField *tupleField;				// current backend tuple being retrieved
+
+	char inTuples;						// is a fetch of rows from the backend in progress?
+};
+
+#define QR_get_fields(self)				(self->fields)
+
+
+/*	These functions are for retrieving data from the qresult */
+#define QR_get_value_manual(self, tupleno, fieldno)	(TL_get_fieldval(self->manual_tuples, tupleno, fieldno))
+#define QR_get_value_backend(self, fieldno)			(self->tupleField[fieldno].value) 
+
+/*	These functions are used by both manual and backend results */
+#define QR_NumResultCols(self)				(CI_get_num_fields(self->fields))
+#define QR_get_fieldname(self, fieldno_)	(CI_get_fieldname(self->fields, fieldno_))
+#define QR_get_fieldsize(self, fieldno_)	(CI_get_fieldsize(self->fields, fieldno_))    
+#define QR_get_field_type(self, fieldno_)   (CI_get_oid(self->fields, fieldno_))
+
+/*	These functions are used only for manual result sets */
+#define QR_get_num_tuples(self)				(self->manual_tuples ? TL_get_num_tuples(self->manual_tuples) : 0)
+#define QR_add_tuple(self, new_tuple)		(TL_add_tuple(self->manual_tuples, new_tuple))
+#define QR_set_field_info(self, field_num, name, adtid, adtsize)  (CI_set_field_info(self->fields, field_num, name, adtid, adtsize))
+
+/* status macros */
+#define QR_command_successful(self)		( !(self->status == PGRES_BAD_RESPONSE || self->status == PGRES_NONFATAL_ERROR || self->status == PGRES_FATAL_ERROR))
+#define QR_command_nonfatal(self)		( self->status == PGRES_NONFATAL_ERROR)
+#define QR_end_tuples(self)				( self->status == PGRES_END_TUPLES)
+#define QR_set_status(self, condition)	( self->status = condition )
+#define QR_set_message(self, message_)	( self->message = message_)
+
+#define QR_get_message(self)			(self->message)
+#define QR_get_command(self)			(self->command)
+#define QR_get_notice(self)				(self->notice)
+#define QR_get_status(self)				(self->status)
+
+//	Core Functions
+QResultClass *QR_Constructor();
+void QR_Destructor(QResultClass *self);
+char QR_read_tuple(QResultClass *self, char binary);
+int QR_next_tuple(QResultClass *self);
+int QR_close(QResultClass *self);
+char QR_fetch_tuples(QResultClass *self, ConnectionClass *conn, char *cursor);
+void QR_free_memory(QResultClass *self);
+void QR_set_command(QResultClass *self, char *msg);
+void QR_set_notice(QResultClass *self, char *msg);
+
+void QR_set_num_fields(QResultClass *self, int new_num_fields); /* manual result only */
+ 
+#endif

src/interfaces/odbc/resource.h

@@ -0,0 +1,39 @@
+//{{NO_DEPENDENCIES}}
+// Microsoft Developer Studio generated include file.
+// Used by psqlodbc.rc
+//
+#define IDS_BADDSN                      1
+#define IDS_MSGTITLE                    2
+#define DRIVERCONNDIALOG                101
+#define IDC_DSNAME                      400
+#define IDC_DSNAMETEXT                  401
+#define IDC_DESC                        404
+#define IDC_SERVER                      407
+#define IDC_DATABASE                    408
+#define CONFIGDSN                       1001
+#define IDC_PORT                        1002
+#define IDC_USER                        1006
+#define IDC_PASSWORD                    1009
+#define IDC_READONLY                    1011
+#define READONLY_EDIT                   1012
+#define SAVEPASSWORD_EDIT               1013
+#define IDC_COMMLOG                     1014
+#define COMMLOG_EDIT                    1015
+#define IDC_PG62                        1016
+#define PG62_EDIT                       1017
+#define SERVER_EDIT                     1501
+#define PORT_EDIT                       1502
+#define DATABASE_EDIT                   1503
+#define USERNAME_EDIT                   1504
+#define PASSWORD_EDIT                   1505
+
+// Next default values for new objects
+// 
+#ifdef APSTUDIO_INVOKED
+#ifndef APSTUDIO_READONLY_SYMBOLS
+#define _APS_NEXT_RESOURCE_VALUE        102
+#define _APS_NEXT_COMMAND_VALUE         40001
+#define _APS_NEXT_CONTROL_VALUE         1018
+#define _APS_NEXT_SYMED_VALUE           101
+#endif
+#endif

src/interfaces/odbc/results.c

@@ -0,0 +1,694 @@
+
+/* Module:          results.c
+ *
+ * Description:     This module contains functions related to 
+ *                  retrieving result information through the ODBC API.
+ *
+ * Classes:         n/a
+ *
+ * API functions:   SQLRowCount, SQLNumResultCols, SQLDescribeCol, SQLColAttributes,
+ *                  SQLGetData, SQLFetch, SQLExtendedFetch, 
+ *                  SQLMoreResults(NI), SQLSetPos(NI), SQLSetScrollOptions(NI),
+ *                  SQLSetCursorName(NI), SQLGetCursorName(NI)
+ *
+ * Comments:        See "notice.txt" for copyright and license information.
+ *
+ */
+
+#include <string.h>
+#include "psqlodbc.h"
+#include "environ.h"
+#include "connection.h"
+#include "statement.h"
+#include "bind.h"
+#include "qresult.h"
+#include "convert.h"
+#include "pgtypes.h" 
+
+#include <stdio.h>
+#include <windows.h>
+#include <sqlext.h>
+
+
+RETCODE SQL_API SQLRowCount(
+        HSTMT      hstmt,
+        SDWORD FAR *pcrow)
+{
+StatementClass *stmt = (StatementClass *) hstmt;
+QResultClass *res;
+char *msg, *ptr;
+
+	if ( ! stmt)
+		return SQL_ERROR;
+
+	if(stmt->statement_type == STMT_TYPE_SELECT) {
+		if (stmt->status == STMT_FINISHED) {
+			res = SC_get_Result(stmt);
+
+			if(res && pcrow) {
+				*pcrow = QR_get_num_tuples(res);
+				return SQL_SUCCESS;
+			}
+		}
+	} else {
+
+		res = SC_get_Result(stmt);
+		if (res && pcrow) {
+			msg = QR_get_command(res);
+			mylog("*** msg = '%s'\n", msg);
+			trim(msg);	//	get rid of trailing spaces
+			ptr = strrchr(msg, ' ');
+			if (ptr) {
+				*pcrow = atoi(ptr+1);
+				mylog("**** SQLRowCount(): THE ROWS: *pcrow = %d\n", *pcrow);
+			}
+			else {
+				*pcrow = -1;
+
+				mylog("**** SQLRowCount(): NO ROWS: *pcrow = %d\n", *pcrow);
+			}
+
+		return SQL_SUCCESS;
+		}
+	}
+
+	return SQL_ERROR;     
+}
+
+
+//      This returns the number of columns associated with the database
+//      attached to "hstmt".
+
+
+RETCODE SQL_API SQLNumResultCols(
+        HSTMT     hstmt,
+        SWORD FAR *pccol)
+{       
+StatementClass *stmt = (StatementClass *) hstmt;
+QResultClass *result;
+
+	if ( ! stmt)
+		return SQL_INVALID_HANDLE;
+
+	SC_clear_error(stmt);    
+
+	/* CC: Now check for the "prepared, but not executed" situation, that enables us to
+	deal with "SQLPrepare -- SQLDescribeCol -- ... -- SQLExecute" situations.
+	(AutoCAD 13 ASE/ASI just _loves_ that ;-) )
+	*/
+	mylog("**** SQLNumResultCols: calling SC_pre_execute\n");
+
+	SC_pre_execute(stmt);       
+
+	result = SC_get_Result(stmt);
+
+	mylog("SQLNumResultCols: result = %u, status = %d, numcols = %d\n", result, stmt->status, result != NULL ? QR_NumResultCols(result) : -1);
+	if (( ! result) || ((stmt->status != STMT_FINISHED) && (stmt->status != STMT_PREMATURE)) ) {
+		/* no query has been executed on this statement */
+		stmt->errornumber = STMT_SEQUENCE_ERROR;
+		stmt->errormsg = "No query has been executed with that handle";
+		return SQL_ERROR;
+	}
+
+	*pccol = QR_NumResultCols(result);
+
+	return SQL_SUCCESS;
+}
+
+//      -       -       -       -       -       -       -       -       -
+
+//      Return information about the database column the user wants
+//      information about.
+/* CC: preliminary implementation */
+RETCODE SQL_API SQLDescribeCol(
+        HSTMT      hstmt,
+        UWORD      icol,
+        UCHAR  FAR *szColName,
+        SWORD      cbColNameMax,
+        SWORD  FAR *pcbColName,
+        SWORD  FAR *pfSqlType,
+        UDWORD FAR *pcbColDef,
+        SWORD  FAR *pibScale,
+        SWORD  FAR *pfNullable)
+{
+    /* gets all the information about a specific column */
+StatementClass *stmt = (StatementClass *) hstmt;
+QResultClass *result;
+char *name;
+Int4 fieldtype;
+
+    if ( ! stmt)
+        return SQL_INVALID_HANDLE;
+
+    SC_clear_error(stmt);
+
+    /* CC: Now check for the "prepared, but not executed" situation, that enables us to
+           deal with "SQLPrepare -- SQLDescribeCol -- ... -- SQLExecute" situations.
+           (AutoCAD 13 ASE/ASI just _loves_ that ;-) )
+    */
+
+	SC_pre_execute(stmt);       
+
+        
+    result = SC_get_Result(stmt);
+	mylog("**** SQLDescribeCol: result = %u, stmt->status = %d, !finished=%d, !premature=%d\n", result, stmt->status, stmt->status != STMT_FINISHED, stmt->status != STMT_PREMATURE);
+    if ( (NULL == result) || ((stmt->status != STMT_FINISHED) && (stmt->status != STMT_PREMATURE))) {
+        /* no query has been executed on this statement */
+        stmt->errornumber = STMT_SEQUENCE_ERROR;
+        stmt->errormsg = "No query has been assigned to this statement.";
+        return SQL_ERROR;
+    }
+
+    if (cbColNameMax >= 1) {
+        name = QR_get_fieldname(result, (Int2) (icol-1));
+		mylog("describeCol: col %d fieldname = '%s'\n", icol - 1, name);
+        /* our indices start from 0 whereas ODBC defines indices starting from 1 */
+        if (NULL != pcbColName)  {
+            // we want to get the total number of bytes in the column name
+            if (NULL == name) 
+                *pcbColName = 0;
+            else
+                *pcbColName = strlen(name);
+        }
+        if (NULL != szColName) {
+            // get the column name into the buffer if there is one
+            if (NULL == name) 
+                szColName[0] = '\0';
+            else
+                strncpy_null(szColName, name, cbColNameMax);
+        }
+    }
+
+    fieldtype = QR_get_field_type(result, (Int2) (icol-1));
+	mylog("describeCol: col %d fieldtype = %d\n", icol - 1, fieldtype);
+
+    if (NULL != pfSqlType) {
+        *pfSqlType = pgtype_to_sqltype(fieldtype);
+		if (*pfSqlType == PG_UNKNOWN)
+			*pfSqlType = SQL_CHAR;
+	}
+
+    if (NULL != pcbColDef)
+		*pcbColDef = pgtype_precision(fieldtype);
+
+    if (NULL != pibScale) {
+        Int2 scale;
+        scale = pgtype_scale(fieldtype);
+        if(scale == -1) { scale = 0; }
+        
+        *pibScale = scale;
+    }
+    if (NULL != pfNullable) {
+        *pfNullable = pgtype_nullable(fieldtype);
+    }
+
+    return SQL_SUCCESS;
+}
+
+//      Returns result column descriptor information for a result set.
+
+RETCODE SQL_API SQLColAttributes(
+        HSTMT      hstmt,
+        UWORD      icol,
+        UWORD      fDescType,
+        PTR        rgbDesc,
+        SWORD      cbDescMax,
+        SWORD  FAR *pcbDesc,
+        SDWORD FAR *pfDesc)
+{
+StatementClass *stmt = (StatementClass *) hstmt;
+char *value;
+Int4 field_type;
+
+    if( ! stmt) {
+        return SQL_INVALID_HANDLE;
+    }
+
+    /* CC: Now check for the "prepared, but not executed" situation, that enables us to
+           deal with "SQLPrepare -- SQLDescribeCol -- ... -- SQLExecute" situations.
+           (AutoCAD 13 ASE/ASI just _loves_ that ;-) )
+    */
+    SC_pre_execute(stmt);       
+
+	mylog("**** SQLColAtt: result = %u, status = %d, numcols = %d\n", stmt->result, stmt->status, stmt->result != NULL ? QR_NumResultCols(stmt->result) : -1);
+
+    if ( (NULL == stmt->result) || ((stmt->status != STMT_FINISHED) && (stmt->status != STMT_PREMATURE)) ) {
+        stmt->errormsg = "Can't get column attributes: no result found.";
+        stmt->errornumber = STMT_SEQUENCE_ERROR;
+        return SQL_ERROR;
+    }
+
+    if(icol < 1) {
+        // we do not support bookmarks
+        stmt->errormsg = "Bookmarks are not currently supported.";
+        stmt->errornumber = STMT_NOT_IMPLEMENTED_ERROR;
+        return SQL_ERROR;
+    }
+
+    icol -= 1;
+    field_type = QR_get_field_type(stmt->result, icol);
+	mylog("colAttr: col %d field_type = %d\n", icol, field_type);
+    switch(fDescType) {
+    case SQL_COLUMN_AUTO_INCREMENT:
+        if (NULL != pfDesc) {
+	    *pfDesc = pgtype_auto_increment(field_type);
+
+	    if(*pfDesc == -1) { /* "not applicable" becomes false */
+		*pfDesc = FALSE;
+	    }
+	}
+        break;
+    case SQL_COLUMN_CASE_SENSITIVE:
+        if (NULL != pfDesc)    
+          *pfDesc = pgtype_case_sensitive(field_type);
+        break;
+    case SQL_COLUMN_COUNT:
+        if (NULL != pfDesc)    
+          *pfDesc = QR_NumResultCols(stmt->result);
+        break;
+    case SQL_COLUMN_DISPLAY_SIZE:
+		if (NULL != pfDesc)
+			*pfDesc = pgtype_precision(field_type);
+
+		mylog("colAttr: col %d fieldsize = %d\n", icol, *pfDesc);
+
+        break;
+    case SQL_COLUMN_LABEL:
+    case SQL_COLUMN_NAME:
+        value = QR_get_fieldname(stmt->result, icol);
+        strncpy_null((char *)rgbDesc, value, cbDescMax);
+        /* CC: Check for Nullpointesr */
+        if (NULL != pcbDesc)
+          *pcbDesc = strlen(value);
+        break;
+    case SQL_COLUMN_LENGTH:
+        if (NULL != pfDesc)
+          *pfDesc = pgtype_precision(field_type);
+        return SQL_SUCCESS;
+        break;
+    case SQL_COLUMN_MONEY:
+        if (NULL != pfDesc)    
+          *pfDesc = pgtype_money(field_type);
+        break;
+    case SQL_COLUMN_NULLABLE:
+        if (NULL != pfDesc)    
+          *pfDesc = pgtype_nullable(field_type);
+        break;
+    case SQL_COLUMN_OWNER_NAME:
+        return SQL_ERROR;
+        break;
+    case SQL_COLUMN_PRECISION:
+        if (NULL != pfDesc)    
+          *pfDesc = pgtype_precision(field_type);
+        break;
+    case SQL_COLUMN_QUALIFIER_NAME:
+        strncpy_null((char *)rgbDesc, "", cbDescMax);
+        if (NULL != pfDesc)        
+          *pcbDesc = 1;
+        break;
+    case SQL_COLUMN_SCALE:
+        if (NULL != pfDesc)    
+          *pfDesc = pgtype_scale(field_type);
+        break;
+    case SQL_COLUMN_SEARCHABLE:
+        if (NULL != pfDesc)    
+          *pfDesc = pgtype_searchable(field_type);
+        break;
+    case SQL_COLUMN_TABLE_NAME:
+        return SQL_ERROR;
+        break;
+    case SQL_COLUMN_TYPE:
+        if (NULL != pfDesc) {
+          *pfDesc = pgtype_to_sqltype(field_type);
+		  if (*pfDesc == PG_UNKNOWN)
+			  *pfDesc = SQL_CHAR;
+		}
+        break;
+    case SQL_COLUMN_TYPE_NAME:
+        value = pgtype_to_name(field_type);
+        strncpy_null((char *)rgbDesc, value, cbDescMax);
+        if (NULL != pcbDesc)        
+          *pcbDesc = strlen(value);
+        break;
+    case SQL_COLUMN_UNSIGNED:
+        if (NULL != pfDesc) {
+	    *pfDesc = pgtype_unsigned(field_type);
+	    if(*pfDesc == -1) {
+		*pfDesc = FALSE;
+	    }
+	}
+        break;
+    case SQL_COLUMN_UPDATABLE:
+        // everything should be updatable, I guess, unless access permissions
+        // prevent it--are we supposed to check for that here?  seems kind
+        // of complicated.  hmm...
+        if (NULL != pfDesc)        
+          *pfDesc = SQL_ATTR_WRITE;
+        break;
+    }
+
+    return SQL_SUCCESS;
+}
+
+//      Returns result data for a single column in the current row.
+
+RETCODE SQL_API SQLGetData(
+        HSTMT      hstmt,
+        UWORD      icol,
+        SWORD      fCType,
+        PTR        rgbValue,
+        SDWORD     cbValueMax,
+        SDWORD FAR *pcbValue)
+{
+QResultClass *res;
+StatementClass *stmt = (StatementClass *) hstmt;
+int num_cols, num_rows;
+Int4 field_type;
+void *value;
+int result;
+
+    if( ! stmt) {
+        return SQL_INVALID_HANDLE;
+    }
+	res = stmt->result;
+
+    if (STMT_EXECUTING == stmt->status) {
+        stmt->errormsg = "Can't get data while statement is still executing.";
+        stmt->errornumber = STMT_SEQUENCE_ERROR;
+        return 0;
+    }
+
+    if (stmt->status != STMT_FINISHED) {
+        stmt->errornumber = STMT_STATUS_ERROR;
+        stmt->errormsg = "GetData can only be called after the successful execution on a SQL statement";
+        return 0;
+    }
+
+    if (icol == 0) {
+        stmt->errormsg = "Bookmarks are not currently supported.";
+        stmt->errornumber = STMT_NOT_IMPLEMENTED_ERROR;
+        return SQL_ERROR;
+    }
+
+    // use zero-based column numbers
+    icol--;
+
+    // make sure the column number is valid
+    num_cols = QR_NumResultCols(res);
+    if (icol >= num_cols) {
+        stmt->errormsg = "Invalid column number.";
+        stmt->errornumber = STMT_INVALID_COLUMN_NUMBER_ERROR;
+        return SQL_ERROR;
+    }
+
+	if ( stmt->manual_result) {
+		// make sure we're positioned on a valid row
+		num_rows = QR_get_num_tuples(res);
+		if((stmt->currTuple < 0) ||
+		   (stmt->currTuple >= num_rows)) {
+			stmt->errormsg = "Not positioned on a valid row for GetData.";
+			stmt->errornumber = STMT_INVALID_CURSOR_STATE_ERROR;
+			return SQL_ERROR;
+		}
+		value = QR_get_value_manual(res, stmt->currTuple, icol);
+	}
+	else { /* its a SOCKET result (backend data) */
+		if (stmt->currTuple == -1 || ! res || QR_end_tuples(res)) {
+			stmt->errormsg = "Not positioned on a valid row for GetData.";
+			stmt->errornumber = STMT_INVALID_CURSOR_STATE_ERROR;
+			return SQL_ERROR;
+		}
+
+		value = QR_get_value_backend(res, icol);
+
+	}
+
+	field_type = QR_get_field_type(res, icol);
+
+	mylog("**** SQLGetData: icol = %d, fCType = %d, field_type = %d, value = '%s'\n", icol, fCType, field_type, value);
+
+    result = copy_and_convert_field(field_type, value, 
+                                    fCType, rgbValue, cbValueMax, pcbValue);
+
+
+    if(result == COPY_UNSUPPORTED_TYPE) {
+        stmt->errormsg = "Received an unsupported type from Postgres.";
+        stmt->errornumber = STMT_RESTRICTED_DATA_TYPE_ERROR;
+        return SQL_ERROR;
+    } else if(result == COPY_UNSUPPORTED_CONVERSION) {
+        stmt->errormsg = "Couldn't handle the necessary data type conversion.";
+        stmt->errornumber = STMT_RESTRICTED_DATA_TYPE_ERROR;
+        return SQL_ERROR;
+    } else if(result == COPY_RESULT_TRUNCATED) {
+        stmt->errornumber = STMT_TRUNCATED;
+        stmt->errormsg = "The buffer was too small for the result.";
+        return SQL_SUCCESS_WITH_INFO;
+    } else if(result != COPY_OK) {
+        stmt->errormsg = "Unrecognized return value from copy_and_convert_field.";
+        stmt->errornumber = STMT_INTERNAL_ERROR;
+        return SQL_ERROR;
+    }
+
+    return SQL_SUCCESS;
+}
+
+//      Returns data for bound columns in the current row ("hstmt->iCursor"),
+//      advances the cursor.
+
+RETCODE SQL_API SQLFetch(
+        HSTMT   hstmt)
+{
+StatementClass *stmt = (StatementClass *) hstmt;   
+QResultClass *res;
+int retval;
+Int2 num_cols, lf;
+Oid type;
+char *value;
+ColumnInfoClass *ci;
+
+
+ if ( ! stmt)
+     return SQL_INVALID_HANDLE;
+
+ SC_clear_error(stmt);
+
+ if ( ! (res = stmt->result)) {
+     stmt->errormsg = "Null statement result in SQLFetch.";
+     stmt->errornumber = STMT_SEQUENCE_ERROR;
+     return SQL_ERROR;
+ }
+
+ ci = QR_get_fields(res);		/* the column info */
+
+ if (stmt->status == STMT_EXECUTING) {
+     stmt->errormsg = "Can't fetch while statement is still executing.";
+     stmt->errornumber = STMT_SEQUENCE_ERROR;
+     return SQL_ERROR;
+ }
+
+
+ if (stmt->status != STMT_FINISHED) {
+     stmt->errornumber = STMT_STATUS_ERROR;
+     stmt->errormsg = "Fetch can only be called after the successful execution on a SQL statement";
+     return SQL_ERROR;
+ }
+
+ if (stmt->bindings == NULL) {
+     // just to avoid a crash if the user insists on calling this
+     // function even if SQL_ExecDirect has reported an Error
+     stmt->errormsg = "Bindings were not allocated properly.";
+     stmt->errornumber = STMT_SEQUENCE_ERROR;
+     return SQL_ERROR;
+ }
+
+ 
+ if ( stmt->manual_result) {
+	 if (QR_get_num_tuples(res) -1 == stmt->currTuple ||
+		 (stmt->maxRows > 0 && stmt->currTuple == stmt->maxRows - 1))
+		 /* if we are at the end of a tuple list, we return a "no data found" */
+		 return SQL_NO_DATA_FOUND;
+ 
+	 mylog("**** SQLFetch: manual_result\n");
+	 (stmt->currTuple)++;
+ }
+ else {
+
+	 // read from the cache or the physical next tuple
+	 retval = QR_next_tuple(res);
+	 if (retval < 0) {
+		mylog("**** SQLFetch: end_tuples\n");
+		return SQL_NO_DATA_FOUND;
+	 }
+	 else if (retval > 0)
+		 (stmt->currTuple)++;		// all is well
+
+	 else {
+		mylog("SQLFetch: error\n");
+		stmt->errornumber = STMT_EXEC_ERROR;
+		stmt->errormsg = "Error fetching next row";
+		 return SQL_ERROR;
+	 }
+
+ }
+
+ num_cols = QR_NumResultCols(res);
+
+ for (lf=0; lf < num_cols; lf++) {
+
+	 mylog("fetch: cols=%d, lf=%d, buffer[] = %u\n", 
+			 num_cols, lf, stmt->bindings[lf].buffer);
+
+     if (stmt->bindings[lf].buffer != NULL) {
+            // this column has a binding
+
+            // type = QR_get_field_type(res, lf);
+			type = CI_get_oid(ci, lf);		/* speed things up */
+
+			if (stmt->manual_result)
+				value = QR_get_value_manual(res, stmt->currTuple, lf);
+			else
+				value = QR_get_value_backend(res, lf);
+
+            retval = copy_and_convert_field_bindinfo(type, value, &(stmt->bindings[lf]));
+
+            // check whether the complete result was copied
+            if(retval == COPY_UNSUPPORTED_TYPE) {
+                stmt->errormsg = "Received an unsupported type from Postgres.";
+                stmt->errornumber = STMT_RESTRICTED_DATA_TYPE_ERROR;
+                return SQL_ERROR;
+
+            } else if(retval == COPY_UNSUPPORTED_CONVERSION) {
+                stmt->errormsg = "Couldn't handle the necessary data type conversion.";
+                stmt->errornumber = STMT_RESTRICTED_DATA_TYPE_ERROR;
+                return SQL_ERROR;
+
+            } else if(retval == COPY_RESULT_TRUNCATED) {
+                /* The result has been truncated during the copy */
+                /* this will generate a SQL_SUCCESS_WITH_INFO result */
+                stmt->errornumber = STMT_TRUNCATED;
+                stmt->errormsg = "A buffer was too small for the return value to fit in";
+				return SQL_SUCCESS_WITH_INFO;
+
+            } else if(retval != COPY_OK) {
+                stmt->errormsg = "Unrecognized return value from copy_and_convert_field.";
+                stmt->errornumber = STMT_INTERNAL_ERROR;
+                return SQL_ERROR;
+
+            }
+     }
+ }
+
+ return SQL_SUCCESS;
+}
+
+//      This fetchs a block of data (rowset).
+
+RETCODE SQL_API SQLExtendedFetch(
+        HSTMT      hstmt,
+        UWORD      fFetchType,
+        SDWORD     irow,
+        UDWORD FAR *pcrow,
+        UWORD  FAR *rgfRowStatus)
+{
+StatementClass *stmt = (StatementClass *) hstmt;
+
+       if ( ! stmt)
+          return SQL_INVALID_HANDLE;
+
+	   /*	Currently, only for manual results can this be done 
+			because not all the tuples are read in ahead of time.
+	   */
+	   if ( ! stmt->manual_result)
+		   return SQL_ERROR;
+
+       // CC: we currently only support fetches in one row bits
+       if (NULL != pcrow)
+         *pcrow = 1;
+       if (NULL != rgfRowStatus)  
+         *rgfRowStatus = SQL_ROW_SUCCESS;
+
+       switch (fFetchType)  {
+       case SQL_FETCH_NEXT:
+          return SQLFetch(hstmt);
+       case SQL_FETCH_PRIOR:
+          if (stmt->currTuple <= 0)
+              return SQL_ERROR;
+          stmt->currTuple--;
+          return SQLFetch(hstmt);
+       case SQL_FETCH_FIRST:
+          stmt->currTuple = -1;
+          return SQLFetch(hstmt);
+       case SQL_FETCH_LAST:
+          stmt->currTuple = QR_get_num_tuples(stmt->result)-1;
+          return SQLFetch(hstmt);
+       case SQL_FETCH_ABSOLUTE:
+          if (irow == 0) {
+              stmt->currTuple = stmt->currTuple > 0 ? stmt->currTuple-2 : -1;
+          } else if (irow > 0) {
+              stmt->currTuple = irow-2;
+              return SQLFetch(hstmt);
+          } else {
+              // CC: ??? not sure about the specification in that case
+              return SQL_ERROR;
+          }    
+        default:
+          return SQL_ERROR;   
+        }           
+        return SQL_SUCCESS;
+}
+
+//      This determines whether there are more results sets available for
+//      the "hstmt".
+
+/* CC: return SQL_NO_DATA_FOUND since we do not support multiple result sets */
+RETCODE SQL_API SQLMoreResults(
+        HSTMT   hstmt)
+{
+          return SQL_NO_DATA_FOUND;
+}
+
+//      This positions the cursor within a block of data.
+
+RETCODE SQL_API SQLSetPos(
+        HSTMT   hstmt,
+        UWORD   irow,
+        UWORD   fOption,
+        UWORD   fLock)
+{
+        return SQL_ERROR;
+}
+
+//      Sets options that control the behavior of cursors.
+
+RETCODE SQL_API SQLSetScrollOptions(
+        HSTMT      hstmt,
+        UWORD      fConcurrency,
+        SDWORD  crowKeyset,
+        UWORD      crowRowset)
+{
+        return SQL_ERROR;
+}
+
+
+//      Set the cursor name on a statement handle
+
+RETCODE SQL_API SQLSetCursorName(
+        HSTMT     hstmt,
+        UCHAR FAR *szCursor,
+        SWORD     cbCursor)
+{
+        return SQL_SUCCESS;
+}
+
+//      Return the cursor name for a statement handle
+
+RETCODE SQL_API SQLGetCursorName(
+        HSTMT     hstmt,
+        UCHAR FAR *szCursor,
+        SWORD     cbCursorMax,
+        SWORD FAR *pcbCursor)
+{
+        return SQL_ERROR;
+}
+
+

src/interfaces/odbc/setup.c

@@ -0,0 +1,679 @@
+
+/* Module:          setup.c
+ *
+ * Description:     This module contains the setup functions for 
+ *                  adding/modifying a Data Source in the ODBC.INI portion
+ *                  of the registry.
+ *
+ * Classes:         n/a
+ *
+ * API functions:   ConfigDSN
+ *
+ * Comments:        See "notice.txt" for copyright and license information.
+ *
+ *************************************************************************************/
+
+/*
+** SETUP.C - This is the ODBC sample driver code for
+** setup.
+**
+**      This code is furnished on an as-is basis as part of the ODBC SDK and is
+**      intended for example purposes only.
+**
+*/
+/*--------------------------------------------------------------------------
+  setup.c -- Sample ODBC setup
+
+  This code demonstrates how to interact with the ODBC Installer.  These
+  functions may be part of your ODBC driver or in a separate DLL.
+
+  The ODBC Installer allows a driver to control the management of
+  data sources by calling the ConfigDSN entry point in the appropriate
+  DLL.  When called, ConfigDSN receives four parameters:
+
+    hwndParent ---- Handle of the parent window for any dialogs which
+                    may need to be created.  If this handle is NULL,
+                    then no dialogs should be displayed (that is, the
+                    request should be processed silently).
+
+    fRequest ------ Flag indicating the type of request (add, configure
+                    (edit), or remove).
+
+    lpszDriver ---- Far pointer to a null-terminated string containing
+                    the name of your driver.  This is the same string you
+                    supply in the ODBC.INF file as your section header
+                    and which ODBC Setup displays to the user in lieu
+                    of the actual driver filename.  This string needs to
+                    be passed back to the ODBC Installer when adding a
+                    new data source name.
+
+    lpszAttributes- Far pointer to a list of null-terminated attribute
+                    keywords.  This list is similar to the list passed
+                    to SQLDriverConnect, except that each key-value
+                    pair is separated by a null-byte rather than a
+                    semicolon.  The entire list is then terminated with
+                    a null-byte (that is, two consecutive null-bytes
+                    mark the end of the list).  The keywords accepted
+                    should be those for SQLDriverConnect which are
+                    applicable, any new keywords you define for ODBC.INI,
+                    and any additional keywords you decide to document.
+
+  ConfigDSN should return TRUE if the requested operation succeeds and
+  FALSE otherwise.  The complete prototype for ConfigDSN is:
+
+  BOOL FAR PASCAL ConfigDSN(HWND    hwndParent,
+                            WORD    fRequest,
+                            LPSTR   lpszDriver,
+                            LPCSTR  lpszAttributes)
+
+  Your setup code should not write to ODBC.INI directly to add or remove
+  data source names.  Instead, link with ODBCINST.LIB (the ODBC Installer
+  library) and call SQLWriteDSNToIni and SQLRemoveDSNFromIni.
+  Use SQLWriteDSNToIni to add data source names.  If the data source name
+  already exists, SQLWriteDSNToIni will delete it (removing all of its
+  associated keys) and rewrite it.  SQLRemoveDSNToIni removes a data
+  source name and all of its associated keys.
+
+  For NT compatibility, the driver code should not use the
+  Get/WritePrivateProfileString windows functions for ODBC.INI, but instead,
+  use SQLGet/SQLWritePrivateProfileString functions that are macros (16 bit) or
+  calls to the odbcinst.dll (32 bit).
+
+--------------------------------------------------------------------------*/
+
+
+// Includes ----------------------------------------------------------------
+#include  "psqlodbc.h"                                  // Local include files
+#include  <windows.h>
+#include  <windowsx.h>
+#include  <odbcinst.h>                                  // ODBC installer prototypes
+#include  <string.h>                                    // C include files
+#include  <stdlib.h>
+#include  "resource.h"
+
+#define INTFUNC  __stdcall
+
+extern HINSTANCE NEAR s_hModule;               /* Saved module handle. */
+extern GLOBAL_VALUES globals;
+
+// Constants ---------------------------------------------------------------
+#define MIN(x,y)      ((x) < (y) ? (x) : (y))
+
+#define MAXPATHLEN      (255+1)           // Max path length
+#define MAXKEYLEN       (15+1)            // Max keyword length
+#define MAXDESC         (255+1)           // Max description length
+#define MAXDSNAME       (32+1)            // Max data source name length
+
+static char far EMPTYSTR  []= "";
+static char far OPTIONON  []= "Yes";
+static char far OPTIONOFF []= "No";
+
+// Attribute key indexes (into an array of Attr structs, see below)
+#define KEY_DSN                 0
+#define KEY_DESC                1
+#define KEY_PORT                2
+#define KEY_SERVER              3
+#define KEY_DATABASE			4
+#define KEY_USER                5
+#define KEY_PASSWORD			6
+#define KEY_DEBUG				7
+#define KEY_FETCH				8
+#define KEY_READONLY			9
+#define KEY_PROTOCOL			10
+#define NUMOFKEYS               11                               // Number of keys supported
+
+// Attribute string look-up table (maps keys to associated indexes)
+static struct {
+  char  szKey[MAXKEYLEN];
+  int    iKey;
+} s_aLookup[] = { "DSN",                 KEY_DSN,
+                   INI_KDESC,            KEY_DESC,
+                   INI_PORT,             KEY_PORT,
+                   INI_SERVER,           KEY_SERVER,
+                   INI_DATABASE,         KEY_DATABASE,
+                   INI_USER,             KEY_USER,
+				   INI_PASSWORD,		 KEY_PASSWORD,
+				   INI_DEBUG,			 KEY_DEBUG,
+                   INI_FETCH,            KEY_FETCH,
+				   INI_READONLY,         KEY_READONLY,
+				   INI_PROTOCOL,         KEY_PROTOCOL,
+                   "",                           0
+                };
+
+
+
+// Types -------------------------------------------------------------------
+typedef struct tagAttr {
+        BOOL  fSupplied;
+        char  szAttr[MAXPATHLEN];
+} Attr, FAR * LPAttr;
+
+
+// Globals -----------------------------------------------------------------
+// NOTE:  All these are used by the dialog procedures
+typedef struct tagSETUPDLG {
+        HWND    hwndParent;                                     // Parent window handle
+        LPCSTR  lpszDrvr;                                               // Driver description
+        Attr    aAttr[NUMOFKEYS];                               // Attribute array
+        char    szDSN[MAXDSNAME];                               // Original data source name
+        BOOL    fNewDSN;                                                // New data source flag
+        BOOL    fDefault;                                               // Default data source flag
+
+} SETUPDLG, FAR *LPSETUPDLG;
+
+
+
+// Prototypes --------------------------------------------------------------
+void INTFUNC CenterDialog         (HWND    hdlg);
+
+int  CALLBACK ConfigDlgProc     (HWND   hdlg,
+                                           WORD    wMsg,
+                                           WPARAM  wParam,
+                                           LPARAM  lParam);
+void INTFUNC ParseAttributes (LPCSTR    lpszAttributes, LPSETUPDLG lpsetupdlg);
+
+/* CC: SetDSNAttributes is declared as "INTFUNC" below, but here it is declared as
+       "CALLBACK" -- Watcom complained about disagreeing modifiers. Changed
+       "CALLBACK" to "INTFUNC" here.
+       BOOL CALLBACK SetDSNAttributes(HWND     hwnd, LPSETUPDLG lpsetupdlg);
+*/
+
+BOOL INTFUNC SetDSNAttributes(HWND     hwnd, LPSETUPDLG lpsetupdlg);
+
+/* ConfigDSN ---------------------------------------------------------------
+  Description:  ODBC Setup entry point
+                This entry point is called by the ODBC Installer
+                (see file header for more details)
+  Input      :  hwnd ----------- Parent window handle
+                fRequest ------- Request type (i.e., add, config, or remove)
+                lpszDriver ----- Driver name
+                lpszAttributes - data source attribute string
+  Output     :  TRUE success, FALSE otherwise
+--------------------------------------------------------------------------*/
+
+BOOL CALLBACK ConfigDSN (HWND    hwnd,
+                         WORD    fRequest,
+                         LPCSTR  lpszDriver,
+                         LPCSTR  lpszAttributes)
+{
+        BOOL  fSuccess;                                            // Success/fail flag
+        GLOBALHANDLE hglbAttr;
+        LPSETUPDLG lpsetupdlg;
+        
+
+        // Allocate attribute array
+        hglbAttr = GlobalAlloc(GMEM_MOVEABLE | GMEM_ZEROINIT, sizeof(SETUPDLG));
+        if (!hglbAttr)
+                return FALSE;
+        lpsetupdlg = (LPSETUPDLG)GlobalLock(hglbAttr);
+
+        // Parse attribute string
+        if (lpszAttributes)
+                ParseAttributes(lpszAttributes, lpsetupdlg);
+
+        // Save original data source name
+        if (lpsetupdlg->aAttr[KEY_DSN].fSupplied)
+                lstrcpy(lpsetupdlg->szDSN, lpsetupdlg->aAttr[KEY_DSN].szAttr);
+        else
+                lpsetupdlg->szDSN[0] = '\0';
+
+        // Remove data source
+        if (ODBC_REMOVE_DSN == fRequest) {
+                // Fail if no data source name was supplied
+                if (!lpsetupdlg->aAttr[KEY_DSN].fSupplied)
+                        fSuccess = FALSE;
+
+                // Otherwise remove data source from ODBC.INI
+                else
+                        fSuccess = SQLRemoveDSNFromIni(lpsetupdlg->aAttr[KEY_DSN].szAttr);
+        }
+
+        // Add or Configure data source
+        else {
+                // Save passed variables for global access (e.g., dialog access)
+                lpsetupdlg->hwndParent = hwnd;
+                lpsetupdlg->lpszDrvr     = lpszDriver;
+                lpsetupdlg->fNewDSN      = (ODBC_ADD_DSN == fRequest);
+                lpsetupdlg->fDefault     =
+                        !lstrcmpi(lpsetupdlg->aAttr[KEY_DSN].szAttr, INI_DSN);
+
+                // Display the appropriate dialog (if parent window handle supplied)
+                if (hwnd) {
+                        // Display dialog(s)
+                          fSuccess = (IDOK == DialogBoxParam(s_hModule,
+                                                                                  MAKEINTRESOURCE(CONFIGDSN),
+                                                                                  hwnd,
+                                                                                  ConfigDlgProc,
+                                                                                  (LONG)(LPSTR)lpsetupdlg));
+                }
+
+                else if (lpsetupdlg->aAttr[KEY_DSN].fSupplied)
+                        fSuccess = SetDSNAttributes(hwnd, lpsetupdlg);
+                else
+                        fSuccess = FALSE;
+        }
+
+        GlobalUnlock(hglbAttr);
+        GlobalFree(hglbAttr);
+
+        return fSuccess;
+}
+
+
+/* CenterDialog ------------------------------------------------------------
+        Description:  Center the dialog over the frame window
+        Input      :  hdlg -- Dialog window handle
+        Output     :  None
+--------------------------------------------------------------------------*/
+void INTFUNC CenterDialog(HWND hdlg)
+{
+        HWND    hwndFrame;
+        RECT    rcDlg, rcScr, rcFrame;
+        int             cx, cy;
+
+        hwndFrame = GetParent(hdlg);
+
+        GetWindowRect(hdlg, &rcDlg);
+        cx = rcDlg.right  - rcDlg.left;
+        cy = rcDlg.bottom - rcDlg.top;
+
+        GetClientRect(hwndFrame, &rcFrame);
+        ClientToScreen(hwndFrame, (LPPOINT)(&rcFrame.left));
+        ClientToScreen(hwndFrame, (LPPOINT)(&rcFrame.right));
+        rcDlg.top    = rcFrame.top  + (((rcFrame.bottom - rcFrame.top) - cy) >> 1);
+        rcDlg.left   = rcFrame.left + (((rcFrame.right - rcFrame.left) - cx) >> 1);
+        rcDlg.bottom = rcDlg.top  + cy;
+        rcDlg.right  = rcDlg.left + cx;
+
+        GetWindowRect(GetDesktopWindow(), &rcScr);
+        if (rcDlg.bottom > rcScr.bottom)
+        {
+                rcDlg.bottom = rcScr.bottom;
+                rcDlg.top    = rcDlg.bottom - cy;
+        }
+        if (rcDlg.right  > rcScr.right)
+        {
+                rcDlg.right = rcScr.right;
+                rcDlg.left  = rcDlg.right - cx;
+        }
+
+        if (rcDlg.left < 0) rcDlg.left = 0;
+        if (rcDlg.top  < 0) rcDlg.top  = 0;
+
+        MoveWindow(hdlg, rcDlg.left, rcDlg.top, cx, cy, TRUE);
+        return;
+}
+
+/* ConfigDlgProc -----------------------------------------------------------
+  Description:  Manage add data source name dialog
+  Input      :  hdlg --- Dialog window handle
+                wMsg --- Message
+                wParam - Message parameter
+                lParam - Message parameter
+  Output     :  TRUE if message processed, FALSE otherwise
+--------------------------------------------------------------------------*/
+
+
+
+int CALLBACK ConfigDlgProc
+                                                (HWND   hdlg,
+                                                 WORD   wMsg,
+                                                 WPARAM wParam,
+                                                 LPARAM lParam)
+{
+
+        switch (wMsg) {
+        // Initialize the dialog
+        case WM_INITDIALOG:
+        {
+                LPSETUPDLG lpsetupdlg;
+                LPCSTR     lpszDSN;
+
+                SetWindowLong(hdlg, DWL_USER, lParam);
+                CenterDialog(hdlg);                             // Center dialog
+
+                lpsetupdlg = (LPSETUPDLG) lParam;
+                lpszDSN    = lpsetupdlg->aAttr[KEY_DSN].szAttr;
+                // Initialize dialog fields
+                // NOTE: Values supplied in the attribute string will always
+                //               override settings in ODBC.INI
+                SetDlgItemText(hdlg, IDC_DSNAME, lpszDSN);
+
+				//	Description
+                if (!lpsetupdlg->aAttr[KEY_DESC].fSupplied)
+                        SQLGetPrivateProfileString(lpszDSN, INI_KDESC,
+                                EMPTYSTR,
+                                lpsetupdlg->aAttr[KEY_DESC].szAttr,
+                                sizeof(lpsetupdlg->aAttr[KEY_DESC].szAttr),
+                                ODBC_INI);
+                SetDlgItemText(hdlg, IDC_DESC, lpsetupdlg->aAttr[KEY_DESC].szAttr);
+
+				//	Database
+                if (!lpsetupdlg->aAttr[KEY_DATABASE].fSupplied)
+                SQLGetPrivateProfileString(lpszDSN, INI_DATABASE,
+                        EMPTYSTR,
+                        lpsetupdlg->aAttr[KEY_DATABASE].szAttr,
+                        sizeof(lpsetupdlg->aAttr[KEY_DATABASE].szAttr),
+                        ODBC_INI);
+                SetDlgItemText(hdlg, IDC_DATABASE, lpsetupdlg->aAttr[KEY_DATABASE].szAttr);
+
+                //	Server
+                if (!lpsetupdlg->aAttr[KEY_SERVER].fSupplied) 
+                  SQLGetPrivateProfileString(lpszDSN, INI_SERVER,
+                        EMPTYSTR,
+                        lpsetupdlg->aAttr[KEY_SERVER].szAttr,
+                        sizeof(lpsetupdlg->aAttr[KEY_SERVER].szAttr),
+                        ODBC_INI);
+                SetDlgItemText(hdlg, IDC_SERVER, lpsetupdlg->aAttr[KEY_SERVER].szAttr);
+
+				//	Port
+                if (!lpsetupdlg->aAttr[KEY_PORT].fSupplied)
+                SQLGetPrivateProfileString(lpszDSN, INI_PORT,
+                        EMPTYSTR,
+                        lpsetupdlg->aAttr[KEY_PORT].szAttr,
+                        sizeof(lpsetupdlg->aAttr[KEY_PORT].szAttr),
+                        ODBC_INI);
+				if (lpsetupdlg->aAttr[KEY_PORT].szAttr[0] == '\0')
+					strcpy(lpsetupdlg->aAttr[KEY_PORT].szAttr, DEFAULT_PORT);
+                SetDlgItemText(hdlg, IDC_PORT, lpsetupdlg->aAttr[KEY_PORT].szAttr);
+
+				/* Username */
+                if (!lpsetupdlg->aAttr[KEY_USER].fSupplied) 
+                  SQLGetPrivateProfileString(lpszDSN, INI_USER,
+                        EMPTYSTR,
+                        lpsetupdlg->aAttr[KEY_USER].szAttr,
+                        sizeof(lpsetupdlg->aAttr[KEY_USER].szAttr),
+                        ODBC_INI);
+                SetDlgItemText(hdlg, IDC_USER, lpsetupdlg->aAttr[KEY_USER].szAttr);
+
+				//	Password
+                if (!lpsetupdlg->aAttr[KEY_PASSWORD].fSupplied) 
+                  SQLGetPrivateProfileString(lpszDSN, INI_PASSWORD,
+                        EMPTYSTR,
+                        lpsetupdlg->aAttr[KEY_PASSWORD].szAttr,
+                        sizeof(lpsetupdlg->aAttr[KEY_PASSWORD].szAttr),
+                        ODBC_INI);
+                SetDlgItemText(hdlg, IDC_PASSWORD, lpsetupdlg->aAttr[KEY_PASSWORD].szAttr);
+
+				//  ReadOnly Parameter
+                if (!lpsetupdlg->aAttr[KEY_READONLY].fSupplied) {
+                  SQLGetPrivateProfileString(lpszDSN, INI_READONLY,
+                        EMPTYSTR,
+                        lpsetupdlg->aAttr[KEY_READONLY].szAttr,
+                        sizeof(lpsetupdlg->aAttr[KEY_READONLY].szAttr),
+                        ODBC_INI);
+				}
+				if (lpsetupdlg->aAttr[KEY_READONLY].szAttr[0] == '\0')
+					strcpy(lpsetupdlg->aAttr[KEY_READONLY].szAttr, DEFAULT_READONLY);
+				CheckDlgButton(hdlg, IDC_READONLY, atoi(lpsetupdlg->aAttr[KEY_READONLY].szAttr));
+
+				//  Protocol Parameter
+                if (!lpsetupdlg->aAttr[KEY_PROTOCOL].fSupplied) {
+                  SQLGetPrivateProfileString(lpszDSN, INI_PROTOCOL,
+                        EMPTYSTR,
+                        lpsetupdlg->aAttr[KEY_PROTOCOL].szAttr,
+                        sizeof(lpsetupdlg->aAttr[KEY_PROTOCOL].szAttr),
+                        ODBC_INI);
+				}
+				if (strncmp(lpsetupdlg->aAttr[KEY_PROTOCOL].szAttr, PG62, strlen(PG62)) == 0)
+					CheckDlgButton(hdlg, IDC_PG62, 1);
+				else
+					CheckDlgButton(hdlg, IDC_PG62, 0);
+
+
+				//	CommLog Parameter (this is global)
+				CheckDlgButton(hdlg, IDC_COMMLOG, globals.commlog);
+
+
+                if (lpsetupdlg->fDefault)
+                {
+                        EnableWindow(GetDlgItem(hdlg, IDC_DSNAME), FALSE);
+                        EnableWindow(GetDlgItem(hdlg, IDC_DSNAMETEXT), FALSE);
+                }
+                else
+                        SendDlgItemMessage(hdlg, IDC_DSNAME,
+                                 EM_LIMITTEXT, (WPARAM)(MAXDSNAME-1), 0L);
+                SendDlgItemMessage(hdlg, IDC_DESC,
+                        EM_LIMITTEXT, (WPARAM)(MAXDESC-1), 0L);
+                return TRUE;                                            // Focus was not set
+    }
+
+
+    // Process buttons
+    case WM_COMMAND:
+                switch (GET_WM_COMMAND_ID(wParam, lParam)) {
+        // Ensure the OK button is enabled only when a data source name
+        // is entered
+        case IDC_DSNAME:
+                        if (GET_WM_COMMAND_CMD(wParam, lParam) == EN_CHANGE)
+                        {
+                                char    szItem[MAXDSNAME];              // Edit control text
+
+                                // Enable/disable the OK button
+                                EnableWindow(GetDlgItem(hdlg, IDOK),
+                                        GetDlgItemText(hdlg, IDC_DSNAME,
+                                                szItem, sizeof(szItem)));
+                                return TRUE;
+                        }
+                        break;
+
+        // Accept results
+                case IDOK:
+                {
+                        LPSETUPDLG lpsetupdlg;
+
+                        lpsetupdlg = (LPSETUPDLG)GetWindowLong(hdlg, DWL_USER);
+                        // Retrieve dialog values
+                        if (!lpsetupdlg->fDefault)
+                                GetDlgItemText(hdlg, IDC_DSNAME,
+                                        lpsetupdlg->aAttr[KEY_DSN].szAttr,
+                                        sizeof(lpsetupdlg->aAttr[KEY_DSN].szAttr));
+                        GetDlgItemText(hdlg, IDC_DESC,
+                                lpsetupdlg->aAttr[KEY_DESC].szAttr,
+                                sizeof(lpsetupdlg->aAttr[KEY_DESC].szAttr));
+                        
+						GetDlgItemText(hdlg, IDC_DATABASE,
+                                lpsetupdlg->aAttr[KEY_DATABASE].szAttr,
+                                sizeof(lpsetupdlg->aAttr[KEY_DATABASE].szAttr));                                
+                        
+						GetDlgItemText(hdlg, IDC_PORT,
+                                lpsetupdlg->aAttr[KEY_PORT].szAttr,
+                                sizeof(lpsetupdlg->aAttr[KEY_PORT].szAttr));                            
+                        
+						GetDlgItemText(hdlg, IDC_SERVER,
+                                lpsetupdlg->aAttr[KEY_SERVER].szAttr,
+                                sizeof(lpsetupdlg->aAttr[KEY_SERVER].szAttr));
+                        
+						GetDlgItemText(hdlg, IDC_USER,
+                                lpsetupdlg->aAttr[KEY_USER].szAttr,
+                                sizeof(lpsetupdlg->aAttr[KEY_USER].szAttr));
+
+                        GetDlgItemText(hdlg, IDC_PASSWORD,
+                                lpsetupdlg->aAttr[KEY_PASSWORD].szAttr,
+                                sizeof(lpsetupdlg->aAttr[KEY_PASSWORD].szAttr));
+
+						if ( IsDlgButtonChecked(hdlg, IDC_PG62))
+							strcpy(lpsetupdlg->aAttr[KEY_PROTOCOL].szAttr, PG62);
+						else
+							lpsetupdlg->aAttr[KEY_PROTOCOL].szAttr[0] = '\0';
+
+						sprintf(lpsetupdlg->aAttr[KEY_READONLY].szAttr, "%d", IsDlgButtonChecked(hdlg, IDC_READONLY));
+
+						globals.commlog = IsDlgButtonChecked(hdlg, IDC_COMMLOG);
+
+
+                        // Update ODBC.INI
+                        SetDSNAttributes(hdlg, lpsetupdlg);
+        }
+
+        // Return to caller
+        case IDCANCEL:
+                        EndDialog(hdlg, wParam);
+                        return TRUE;
+                }
+                break;
+        }
+
+        // Message not processed
+        return FALSE;
+}
+
+
+/* ParseAttributes ---------------------------------------------------------
+  Description:  Parse attribute string moving values into the aAttr array
+  Input      :  lpszAttributes - Pointer to attribute string
+  Output     :  None (global aAttr normally updated)
+--------------------------------------------------------------------------*/
+void INTFUNC ParseAttributes(LPCSTR lpszAttributes, LPSETUPDLG lpsetupdlg)
+{
+        LPCSTR  lpsz;
+        LPCSTR  lpszStart;
+        char    aszKey[MAXKEYLEN];
+        int             iElement;
+        int             cbKey;
+
+        for (lpsz=lpszAttributes; *lpsz; lpsz++)
+        {  //  Extract key name (e.g., DSN), it must be terminated by an equals
+                lpszStart = lpsz;
+                for (;; lpsz++)
+                {
+                        if (!*lpsz)
+                                return;         // No key was found
+                        else if (*lpsz == '=')
+                                break;          // Valid key found
+                }
+                // Determine the key's index in the key table (-1 if not found)
+                iElement = -1;
+                cbKey    = lpsz - lpszStart;
+                if (cbKey < sizeof(aszKey))
+                {
+                        register int j;
+
+                        _fmemcpy(aszKey, lpszStart, cbKey);
+                        aszKey[cbKey] = '\0';
+                        for (j = 0; *s_aLookup[j].szKey; j++)
+                        {
+                                if (!lstrcmpi(s_aLookup[j].szKey, aszKey))
+                                {
+                                        iElement = s_aLookup[j].iKey;
+                                        break;
+                                }
+                        }
+                }
+
+                // Locate end of key value
+                lpszStart = ++lpsz;
+                for (; *lpsz; lpsz++);
+
+                // Save value if key is known
+                // NOTE: This code assumes the szAttr buffers in aAttr have been
+                //         zero initialized
+                if (iElement >= 0)
+                {
+                        lpsetupdlg->aAttr[iElement].fSupplied = TRUE;
+                        _fmemcpy(lpsetupdlg->aAttr[iElement].szAttr,
+                                lpszStart,
+                                MIN(lpsz-lpszStart+1, sizeof(lpsetupdlg->aAttr[0].szAttr)-1));
+                }
+        }
+        return;
+}
+
+
+/* SetDSNAttributes --------------------------------------------------------
+  Description:  Write data source attributes to ODBC.INI
+  Input      :  hwnd - Parent window handle (plus globals)
+  Output     :  TRUE if successful, FALSE otherwise
+--------------------------------------------------------------------------*/
+
+BOOL INTFUNC SetDSNAttributes(HWND hwndParent, LPSETUPDLG lpsetupdlg)
+{
+        LPCSTR  lpszDSN;                                                // Pointer to data source name
+    
+        lpszDSN = lpsetupdlg->aAttr[KEY_DSN].szAttr;
+
+        // Validate arguments
+        if (lpsetupdlg->fNewDSN && !*lpsetupdlg->aAttr[KEY_DSN].szAttr)
+                return FALSE;
+
+        // Write the data source name
+        if (!SQLWriteDSNToIni(lpszDSN, lpsetupdlg->lpszDrvr))
+        {
+                if (hwndParent)
+                {
+                        char  szBuf[MAXPATHLEN];
+                        char  szMsg[MAXPATHLEN];
+
+                        LoadString(s_hModule, IDS_BADDSN, szBuf, sizeof(szBuf));
+                        wsprintf(szMsg, szBuf, lpszDSN);
+                        LoadString(s_hModule, IDS_MSGTITLE, szBuf, sizeof(szBuf));
+                        MessageBox(hwndParent, szMsg, szBuf, MB_ICONEXCLAMATION | MB_OK);
+                }
+                return FALSE;
+        }
+
+
+        // Update ODBC.INI
+        // Save the value if the data source is new, if it was edited, or if
+        // it was explicitly supplied
+        if (hwndParent || lpsetupdlg->aAttr[KEY_DESC].fSupplied )
+                SQLWritePrivateProfileString(lpszDSN,
+                        INI_KDESC,
+                        lpsetupdlg->aAttr[KEY_DESC].szAttr,
+                        ODBC_INI);
+                        
+        if (hwndParent || lpsetupdlg->aAttr[KEY_DATABASE].fSupplied )
+                SQLWritePrivateProfileString(lpszDSN,
+                        INI_DATABASE,
+                        lpsetupdlg->aAttr[KEY_DATABASE].szAttr,
+                        ODBC_INI);
+                        
+        if (hwndParent || lpsetupdlg->aAttr[KEY_PORT].fSupplied )
+                SQLWritePrivateProfileString(lpszDSN,
+                        INI_PORT,
+                        lpsetupdlg->aAttr[KEY_PORT].szAttr,
+                        ODBC_INI);
+
+        if (hwndParent || lpsetupdlg->aAttr[KEY_SERVER].fSupplied ) 
+                SQLWritePrivateProfileString(lpszDSN,
+                        INI_SERVER,
+                        lpsetupdlg->aAttr[KEY_SERVER].szAttr,
+                        ODBC_INI);
+
+        if (hwndParent || lpsetupdlg->aAttr[KEY_USER].fSupplied )
+                SQLWritePrivateProfileString(lpszDSN,
+                        INI_USER,
+                        lpsetupdlg->aAttr[KEY_USER].szAttr,
+                        ODBC_INI);
+
+        if (hwndParent || lpsetupdlg->aAttr[KEY_PASSWORD].fSupplied )
+                SQLWritePrivateProfileString(lpszDSN,
+                        INI_PASSWORD,
+                        lpsetupdlg->aAttr[KEY_PASSWORD].szAttr,
+                        ODBC_INI);
+
+        if (hwndParent || lpsetupdlg->aAttr[KEY_READONLY].fSupplied )
+                SQLWritePrivateProfileString(lpszDSN,
+                        INI_READONLY,
+                        lpsetupdlg->aAttr[KEY_READONLY].szAttr,
+                        ODBC_INI);
+
+        if (hwndParent || lpsetupdlg->aAttr[KEY_PROTOCOL].fSupplied )
+                SQLWritePrivateProfileString(lpszDSN,
+                        INI_PROTOCOL,
+                        lpsetupdlg->aAttr[KEY_PROTOCOL].szAttr,
+                        ODBC_INI);
+
+		//	CommLog Parameter -- write to ODBCINST_INI (for the whole driver)
+        if (hwndParent ) {
+			updateGlobals();
+		}
+
+        // If the data source name has changed, remove the old name
+        if (lpsetupdlg->aAttr[KEY_DSN].fSupplied &&
+                lstrcmpi(lpsetupdlg->szDSN, lpsetupdlg->aAttr[KEY_DSN].szAttr))
+        {
+                SQLRemoveDSNFromIni(lpsetupdlg->szDSN);
+        }
+        return TRUE;
+}

src/interfaces/odbc/socket.c

@@ -0,0 +1,289 @@
+
+/* Module:          socket.c
+ *
+ * Description:     This module contains functions for low level socket
+ *                  operations (connecting/reading/writing to the backend)
+ *
+ * Classes:         SocketClass (Functions prefix: "SOCK_")
+ *
+ * API functions:   none
+ *
+ * Comments:        See "notice.txt" for copyright and license information.
+ *
+ */
+
+#include "socket.h"
+
+extern GLOBAL_VALUES globals;
+
+void
+SOCK_clear_error(SocketClass *self)
+{
+	self->errornumber = 0; 
+	self->errormsg = NULL; 
+}
+
+SocketClass * 
+SOCK_Constructor()
+{
+SocketClass *rv;
+
+    rv = (SocketClass *) malloc(sizeof(SocketClass));
+
+    if (rv != NULL) {
+		rv->socket = (SOCKET) -1;
+		rv->buffer_filled_in = 0;
+		rv->buffer_filled_out = 0;
+		rv->buffer_read_in = 0;
+
+		rv->buffer_in = (unsigned char *) malloc(globals.socket_buffersize);
+		if ( ! rv->buffer_in)
+			return NULL;
+
+		rv->buffer_out = (unsigned char *) malloc(globals.socket_buffersize);
+		if ( ! rv->buffer_out)
+			return NULL;
+		
+        rv->errormsg = NULL;
+        rv->errornumber = 0;
+
+		rv->reverse = FALSE;
+    } 
+    return rv;
+
+}
+
+void
+SOCK_Destructor(SocketClass *self)
+{
+	if (self->socket != -1) {
+		if ( ! shutdown(self->socket, 2)) /* no sends or receives */
+			closesocket(self->socket);
+	}
+
+	if (self->buffer_in)
+		free(self->buffer_in);
+
+	if (self->buffer_out)
+		free(self->buffer_out);
+
+	free(self);
+
+}
+
+
+char 
+SOCK_connect_to(SocketClass *self, unsigned short port, char *hostname)
+{
+struct hostent *host;
+struct sockaddr_in sadr;
+
+	if (self->socket != -1) {
+		self->errornumber = SOCKET_ALREADY_CONNECTED;
+		self->errormsg = "Socket is already connected";
+		return 0;
+	}
+
+	host = gethostbyname(hostname);
+	if (host == NULL) {
+		self->errornumber = SOCKET_HOST_NOT_FOUND;
+		self->errormsg = "Could not resolve hostname.";
+		return 0;
+	}
+
+	memset((char *)&sadr, 0, sizeof(sadr));
+	memcpy(&(sadr.sin_addr), host->h_addr, host->h_length);
+	sadr.sin_family = AF_INET;
+	sadr.sin_port = htons(port);
+
+	self->socket = socket(AF_INET, SOCK_STREAM, 0);
+	if (self->socket == -1) {
+		self->errornumber = SOCKET_COULD_NOT_CREATE_SOCKET;
+		self->errormsg = "Could not create Socket.";
+		return 0;
+	}
+
+	if ( connect(self->socket, (struct sockaddr *)&(sadr),
+			sizeof(sadr))  < 0) {
+
+		self->errornumber = SOCKET_COULD_NOT_CONNECT;
+		self->errormsg = "Could not connect to remote socket.";
+		closesocket(self->socket);
+		self->socket = (SOCKET) -1;
+		return 0;
+	}
+	return 1;
+}
+
+
+void 
+SOCK_get_n_char(SocketClass *self, char *buffer, int len)
+{
+int lf;
+
+	if ( ! buffer) {
+		self->errornumber = SOCKET_NULLPOINTER_PARAMETER;
+		self->errormsg = "get_n_char was called with NULL-Pointer";
+		return;
+	}
+
+	for(lf=0; lf < len; lf++)
+		buffer[lf] = SOCK_get_next_byte(self);
+}
+
+
+void 
+SOCK_put_n_char(SocketClass *self, char *buffer, int len)
+{
+int lf;
+
+	if ( ! buffer) {
+		self->errornumber = SOCKET_NULLPOINTER_PARAMETER;
+		self->errormsg = "put_n_char was called with NULL-Pointer";
+		return;
+	}
+
+	for(lf=0; lf < len; lf++)
+		SOCK_put_next_byte(self, (unsigned char)buffer[lf]);
+}
+
+
+/*  bufsize must include room for the null terminator 
+	will read at most bufsize-1 characters + null. 
+*/
+void 
+SOCK_get_string(SocketClass *self, char *buffer, int bufsize)
+{
+register int lf = 0;
+
+	for (lf = 0; lf < bufsize; lf++)
+		if ( ! (buffer[lf] = SOCK_get_next_byte(self)))
+			return;
+		
+	buffer[bufsize-1] = '\0';
+}
+
+
+void 
+SOCK_put_string(SocketClass *self, char *string)
+{
+register int lf;
+int len;
+
+	len = strlen(string)+1;
+
+	for(lf = 0; lf < len; lf++)
+		SOCK_put_next_byte(self, (unsigned char)string[lf]);
+}
+
+
+int 
+SOCK_get_int(SocketClass *self, short len)
+{
+char buf[4];
+
+	switch (len) {
+	case 2:
+		SOCK_get_n_char(self, buf, len);
+		if (self->reverse)
+			return *((unsigned short *) buf);
+		else
+			return ntohs( *((unsigned short *) buf) );
+
+	case 4:
+		SOCK_get_n_char(self, buf, len);
+		if (self->reverse)
+			return *((unsigned int *) buf);
+		else
+			return ntohl( *((unsigned int *) buf) );
+
+	default:
+		self->errornumber = SOCKET_GET_INT_WRONG_LENGTH;
+		self->errormsg = "Cannot read ints of that length";
+		return 0;
+	}
+}
+
+
+void 
+SOCK_put_int(SocketClass *self, int value, short len)
+{
+unsigned int rv;
+
+	switch (len) {
+	case 2:
+		rv = self->reverse ? value : htons( (unsigned short) value);
+		SOCK_put_n_char(self, (char *) &rv, 2);
+		return;
+
+	case 4:
+		rv = self->reverse ? value : htonl( (unsigned int) value);
+		SOCK_put_n_char(self, (char *) &rv, 4);
+		return;
+
+	default:
+		self->errornumber = SOCKET_PUT_INT_WRONG_LENGTH;
+		self->errormsg = "Cannot write ints of that length";
+		return;
+	 }
+}
+
+
+void 
+SOCK_flush_output(SocketClass *self)
+{
+int written;
+
+	written = send(self->socket, (char *)self->buffer_out, self->buffer_filled_out, 0);
+	if (written != self->buffer_filled_out) {
+		self->errornumber = SOCKET_WRITE_ERROR;
+		self->errormsg = "Could not flush socket buffer.";
+	}
+	self->buffer_filled_out = 0;
+}
+
+unsigned char 
+SOCK_get_next_byte(SocketClass *self)
+{
+
+	if (self->buffer_read_in >= self->buffer_filled_in) {
+	// there are no more bytes left in the buffer ->
+	// reload the buffer
+
+		self->buffer_read_in = 0;
+		self->buffer_filled_in = recv(self->socket, (char *)self->buffer_in, globals.socket_buffersize, 0);
+
+		mylog("read %d, global_socket_buffersize=%d\n", self->buffer_filled_in, globals.socket_buffersize);
+
+		if (self->buffer_filled_in == -1) {
+			self->errornumber = SOCKET_READ_ERROR;
+			self->errormsg = "Error while reading from the socket.";
+			self->buffer_filled_in = 0;
+		}
+		if (self->buffer_filled_in == 0) {
+			self->errornumber = SOCKET_CLOSED;
+			self->errormsg = "Socket has been closed.";
+			self->buffer_filled_in = 0;
+		}
+
+	}
+	return self->buffer_in[self->buffer_read_in++];
+}
+
+void 
+SOCK_put_next_byte(SocketClass *self, unsigned char next_byte)
+{
+int bytes_sent;
+
+	self->buffer_out[self->buffer_filled_out++] = next_byte;
+
+	if (self->buffer_filled_out == globals.socket_buffersize) {
+		// buffer is full, so write it out
+		bytes_sent = send(self->socket, (char *)self->buffer_out, globals.socket_buffersize, 0);
+		if (bytes_sent != globals.socket_buffersize) {
+			self->errornumber = SOCKET_WRITE_ERROR;
+			self->errormsg = "Error while writing to the socket.";
+		}
+		self->buffer_filled_out = 0;
+	}
+}

src/interfaces/odbc/socket.h

@@ -0,0 +1,69 @@
+
+/* File:            socket.h
+ *
+ * Description:     See "socket.c"
+ *
+ * Comments:        See "notice.txt" for copyright and license information.
+ *
+ */
+
+#ifndef __SOCKET_H__
+#define __SOCKET_H__
+
+#include <winsock.h>
+#include "psqlodbc.h"
+
+#define SOCKET_ALREADY_CONNECTED 1
+#define SOCKET_HOST_NOT_FOUND 2
+#define SOCKET_COULD_NOT_CREATE_SOCKET 3
+#define SOCKET_COULD_NOT_CONNECT 4
+#define SOCKET_READ_ERROR 5
+#define SOCKET_WRITE_ERROR 6
+#define SOCKET_NULLPOINTER_PARAMETER 7
+#define SOCKET_PUT_INT_WRONG_LENGTH 8
+#define SOCKET_GET_INT_WRONG_LENGTH 9
+#define SOCKET_CLOSED 10
+
+
+struct SocketClass_ {
+
+	int buffer_filled_in;
+	int buffer_filled_out;
+	int buffer_read_in;
+	unsigned char *buffer_in;
+	unsigned char *buffer_out;
+
+	SOCKET socket;
+
+	char *errormsg;
+	int errornumber;
+
+	char reverse;	/* used to handle Postgres 6.2 protocol (reverse byte order) */
+
+};
+
+#define SOCK_get_char(self)		(SOCK_get_next_byte(self))
+#define SOCK_put_char(self, c)	(SOCK_put_next_byte(self, c))
+
+
+/* error functions */
+#define SOCK_get_errcode(self)		(self->errornumber)
+#define SOCK_get_errmsg(self)		(self->errormsg)
+
+
+/* Socket prototypes */
+SocketClass *SOCK_Constructor();
+void SOCK_Destructor(SocketClass *self);
+char SOCK_connect_to(SocketClass *self, unsigned short port, char *hostname);
+void SOCK_get_n_char(SocketClass *self, char *buffer, int len);
+void SOCK_put_n_char(SocketClass *self, char *buffer, int len);
+void SOCK_get_string(SocketClass *self, char *buffer, int bufsize);
+void SOCK_put_string(SocketClass *self, char *string);
+int SOCK_get_int(SocketClass *self, short len);
+void SOCK_put_int(SocketClass *self, int value, short len);
+void SOCK_flush_output(SocketClass *self);
+unsigned char SOCK_get_next_byte(SocketClass *self);
+void SOCK_put_next_byte(SocketClass *self, unsigned char next_byte);
+void SOCK_clear_error(SocketClass *self);
+
+#endif

src/interfaces/odbc/statement.c

@@ -0,0 +1,545 @@
+
+/* Module:          statement.c
+ *
+ * Description:     This module contains functions related to creating
+ *                  and manipulating a statement.
+ *
+ * Classes:         StatementClass (Functions prefix: "SC_")
+ *
+ * API functions:   SQLAllocStmt, SQLFreeStmt
+ *
+ * Comments:        See "notice.txt" for copyright and license information.
+ *
+ */
+
+#include "statement.h"
+#include "bind.h"
+#include "connection.h"
+#include "qresult.h"
+#include "convert.h"
+#include "environ.h"
+#include <stdio.h>
+
+#include <windows.h>
+#include <sql.h>
+
+extern GLOBAL_VALUES globals;
+
+
+RETCODE SQL_API SQLAllocStmt(HDBC      hdbc,
+                             HSTMT FAR *phstmt)
+{
+ConnectionClass *conn = (ConnectionClass *) hdbc;
+StatementClass *stmt;
+
+	if( ! conn)
+		return SQL_INVALID_HANDLE;
+
+	stmt = SC_Constructor();
+
+	mylog("**** SQLAllocStmt: hdbc = %u, stmt = %u\n", hdbc, stmt);
+
+	if ( ! stmt) {
+		conn->errornumber = CONN_STMT_ALLOC_ERROR;
+		conn->errormsg = "No more memory to allocate a further SQL-statement";
+		*phstmt = SQL_NULL_HSTMT;
+		return SQL_ERROR;
+	}
+
+    if ( ! CC_add_statement(conn, stmt)) {
+        conn->errormsg = "Maximum number of connections exceeded.";
+        conn->errornumber = CONN_STMT_ALLOC_ERROR;
+        SC_Destructor(stmt);
+		*phstmt = SQL_NULL_HSTMT;
+        return SQL_ERROR;
+    }
+
+	*phstmt = (HSTMT) stmt;
+
+    return SQL_SUCCESS;
+}
+
+
+RETCODE SQL_API SQLFreeStmt(HSTMT     hstmt,
+                            UWORD     fOption)
+{
+StatementClass *stmt = (StatementClass *) hstmt;
+
+	mylog("**** enter SQLFreeStmt: hstmt=%u, fOption=%d\n", hstmt, fOption);
+
+	if ( ! stmt)
+		return SQL_INVALID_HANDLE;
+
+	if (fOption == SQL_DROP) {
+		ConnectionClass *conn = stmt->hdbc;
+
+		/* Remove the statement from the connection's statement list */
+		if ( conn) {
+			if ( ! CC_remove_statement(conn, stmt)) {
+				stmt->errornumber = STMT_SEQUENCE_ERROR;
+				stmt->errormsg = "Statement is currently executing a transaction.";
+				return SQL_ERROR;  /* stmt may be executing a transaction */
+			}
+
+			/*	Free any cursors and discard any result info */
+			if (stmt->result) {
+				QR_Destructor(stmt->result);
+				stmt->result = NULL;
+			}
+		}
+
+		/* Destroy the statement and free any results, cursors, etc. */
+		SC_Destructor(stmt);
+
+    } else if (fOption == SQL_UNBIND) {
+		SC_unbind_cols(stmt);
+
+    } else if (fOption == SQL_CLOSE) {
+		ConnectionClass *conn = stmt->hdbc;
+
+		/* this should discard all the results, but leave the statement */
+		/* itself in place (it can be executed again) */
+        if (!SC_recycle_statement(stmt))
+			//	errormsg passed in above
+            return SQL_ERROR;
+
+    } else if(fOption == SQL_RESET_PARAMS) {
+		SC_free_params(stmt, STMT_FREE_PARAMS_ALL);
+
+    } else {
+        stmt->errormsg = "Invalid option passed to SQLFreeStmt.";
+        stmt->errornumber = STMT_OPTION_OUT_OF_RANGE_ERROR;
+        return SQL_ERROR;
+    }
+    
+    return SQL_SUCCESS;
+}
+
+
+/**********************************************************************
+ * StatementClass implementation
+ */
+
+StatementClass *
+SC_Constructor()
+{
+StatementClass *rv;
+
+	rv = (StatementClass *) malloc(sizeof(StatementClass));
+	if (rv) {
+		rv->hdbc = NULL;       /* no connection associated yet */
+		rv->result = NULL;
+		rv->manual_result = FALSE;
+		rv->prepare = FALSE;
+		rv->status = STMT_ALLOCATED;
+		rv->maxRows = 0;			// driver returns all rows
+		rv->errormsg = NULL;
+		rv->errornumber = 0;
+		rv->errormsg_created = FALSE;
+		rv->statement = NULL;
+		rv->stmt_with_params[0] = '\0';
+		rv->statement_type = STMT_TYPE_UNKNOWN;
+		rv->bindings = NULL;
+		rv->bindings_allocated = 0;
+		rv->parameters_allocated = 0;
+		rv->parameters = 0;
+		rv->currTuple = -1;
+		rv->result = 0;
+		rv->data_at_exec = -1;
+		rv->current_exec_param = -1;
+		rv->put_data = FALSE;
+	}
+	return rv;
+}
+
+char
+SC_Destructor(StatementClass *self)
+{
+
+	mylog("SC_Destructor: self=%u, self->result=%u, self->hdbc=%u\n", self, self->result, self->hdbc);
+	if (STMT_EXECUTING == self->status) {
+		self->errornumber = STMT_SEQUENCE_ERROR;
+		self->errormsg = "Statement is currently executing a transaction.";
+		return FALSE;
+	}
+
+	if (self->result) {
+		if ( ! self->hdbc)
+			self->result->conn = NULL;  /* prevent any dbase activity */
+
+		QR_Destructor(self->result);
+	}
+
+	if (self->statement)
+		free(self->statement);
+
+	SC_free_params(self, STMT_FREE_PARAMS_ALL);
+
+	/* the memory pointed to by the bindings is not deallocated by the driver */
+	/* by by the application that uses that driver, so we don't have to care  */
+	/* about that here. */
+	if (self->bindings)
+		free(self->bindings);
+
+	free(self);
+
+	return TRUE;
+}
+
+/*	Free parameters and free the memory from the 
+	data-at-execution parameters that was allocated in SQLPutData.
+*/
+void
+SC_free_params(StatementClass *self, char option)
+{
+int i;
+
+	if( ! self->parameters)
+		return;
+
+	for (i = 0; i < self->parameters_allocated; i++) {
+		if (self->parameters[i].data_at_exec == TRUE) {
+
+			if (self->parameters[i].EXEC_used) {
+				free(self->parameters[i].EXEC_used);
+				self->parameters[i].EXEC_used = NULL;
+			}
+
+			if (self->parameters[i].EXEC_buffer) {
+				free(self->parameters[i].EXEC_buffer);
+				self->parameters[i].EXEC_buffer = NULL;
+			}
+		}
+	}
+	self->data_at_exec = -1;
+	self->current_exec_param = -1;
+	self->put_data = FALSE;
+
+	if (option == STMT_FREE_PARAMS_ALL) {
+		free(self->parameters);
+		self->parameters = NULL;
+		self->parameters_allocated = 0;
+	}
+}
+
+int 
+statement_type(char *statement)
+{
+	if(strnicmp(statement, "SELECT", 6) == 0)
+		return STMT_TYPE_SELECT;
+
+	else if(strnicmp(statement, "INSERT", 6) == 0)
+		return STMT_TYPE_INSERT;
+
+	else if(strnicmp(statement, "UPDATE", 6) == 0)
+		return STMT_TYPE_UPDATE;
+
+	else if(strnicmp(statement, "DELETE", 6) == 0)
+		return STMT_TYPE_DELETE;
+
+	else
+		return STMT_TYPE_OTHER;
+}
+
+/*	Called from SQLPrepare if STMT_PREMATURE, or
+	from SQLExecute if STMT_FINISHED, or
+	from SQLFreeStmt(SQL_CLOSE)
+ */
+char 
+SC_recycle_statement(StatementClass *self)
+{
+ConnectionClass *conn;
+
+	/*	This would not happen */    
+	if (self->status == STMT_EXECUTING) {
+		self->errornumber = STMT_SEQUENCE_ERROR;
+		self->errormsg = "Statement is currently executing a transaction.";
+		return FALSE;
+	}
+
+	self->errormsg = NULL;
+	self->errornumber = 0;
+	self->errormsg_created = FALSE;
+
+	switch (self->status) {
+	case STMT_ALLOCATED:
+		/* this statement does not need to be recycled */
+		return TRUE;
+
+	case STMT_READY:
+		break;
+
+	case STMT_PREMATURE:
+		/*	Premature execution of the statement might have caused the start of a transaction.
+			If so, we have to rollback that transaction.
+		*/
+		conn = SC_get_conn(self);
+		if ( ! CC_is_in_autocommit(conn) && CC_is_in_trans(conn)) {             
+
+			CC_send_query(conn, "ABORT", NULL, NULL);
+			CC_set_no_trans(conn);
+		}
+		break;
+
+	case STMT_FINISHED:
+		break;
+
+	default:
+		self->errormsg = "An internal error occured while recycling statements";
+		self->errornumber = STMT_INTERNAL_ERROR;
+		return FALSE;
+	}
+
+
+	/*	Free any cursors */
+	if (self->result) {
+		QR_Destructor(self->result);
+		self->result = NULL;
+	}
+
+	self->status = STMT_READY;
+	self->currTuple = -1;
+
+	self->errormsg = NULL;
+	self->errornumber = 0;
+	self->errormsg_created = FALSE;
+
+	//	Free any data at exec params before the statement is executed
+	//	again.  If not, then there will be a memory leak when
+	//	the next SQLParamData/SQLPutData is called.
+	SC_free_params(self, STMT_FREE_PARAMS_DATA_AT_EXEC_ONLY);
+
+	return TRUE;
+}
+
+/* Pre-execute a statement (SQLPrepare/SQLDescribeCol) */
+void 
+SC_pre_execute(StatementClass *self)
+{
+ 
+	mylog("SC_pre_execute: status = %d\n", self->status);
+
+	if (self->status == STMT_READY) {
+		mylog("              preprocess: status = READY\n");
+
+		SQLExecute(self);
+
+		if (self->status == STMT_FINISHED) {
+			mylog("              preprocess: after status = FINISHED, so set PREMATURE\n");
+			self->status = STMT_PREMATURE;
+		}
+	}  
+}
+
+/* This is only called from SQLFreeStmt(SQL_UNBIND) */
+char 
+SC_unbind_cols(StatementClass *self)
+{
+Int2 lf;
+
+	for(lf = 0; lf < self->bindings_allocated; lf++) {
+		self->bindings[lf].buflen = 0;
+		self->bindings[lf].buffer = NULL;
+		self->bindings[lf].used = NULL;
+		self->bindings[lf].returntype = SQL_C_CHAR;
+	}
+
+    return 1;
+}
+
+void 
+SC_clear_error(StatementClass *self)
+{
+	self->errornumber = 0;
+	self->errormsg = NULL;
+	self->errormsg_created = FALSE;
+}
+
+
+//	This function creates an error msg which is the concatenation
+//	of the result, statement, connection, and socket messages.
+char *
+SC_create_errormsg(StatementClass *self)
+{
+QResultClass *res = self->result;
+ConnectionClass *conn = self->hdbc;
+int pos;
+static char msg[4096];
+
+	msg[0] = '\0';
+
+	if (res && res->message)
+		strcpy(msg, res->message);
+
+	else if (self->errormsg)
+		strcpy(msg, self->errormsg);
+
+	if (conn) {
+		SocketClass *sock = conn->sock;
+
+		if (conn->errormsg && conn->errormsg[0] != '\0') {
+			pos = strlen(msg);
+			sprintf(&msg[pos], ";\n%s", conn->errormsg);
+		}
+
+		if (sock && sock->errormsg && sock->errormsg[0] != '\0') {
+			pos = strlen(msg);
+			sprintf(&msg[pos], ";\n%s", sock->errormsg);
+		}
+	}
+
+	return msg;
+}
+
+char 
+SC_get_error(StatementClass *self, int *number, char **message)
+{
+char rv;
+
+	//	Create a very informative errormsg if it hasn't been done yet.
+	if ( ! self->errormsg_created) {
+		self->errormsg = SC_create_errormsg(self);
+		self->errormsg_created = TRUE;
+	}
+
+	if ( self->errornumber) {
+		*number = self->errornumber;
+		*message = self->errormsg;
+		self->errormsg = NULL;
+	}
+
+	rv = (self->errornumber != 0);
+	self->errornumber = 0;
+
+	return rv;
+}
+
+RETCODE SC_execute(StatementClass *self)
+{
+ConnectionClass *conn;
+QResultClass *res;
+char ok, was_ok, was_nonfatal;
+Int2 oldstatus, numcols;
+
+
+	conn = SC_get_conn(self);
+
+	/*	Begin a transaction if one is not already in progress */
+	/*	The reason is because we can't use declare/fetch cursors without
+		starting a transaction first.
+	*/
+
+	if ( ! CC_is_in_trans(conn))	{
+		mylog("   about to begin a transaction on statement = %u\n", self);
+		res = CC_send_query(conn, "BEGIN", NULL, NULL);
+		if ( ! res) {
+			self->errormsg = "Could not begin a transaction";
+			self->errornumber = STMT_EXEC_ERROR;
+			return SQL_ERROR;
+		}
+		
+		ok = QR_command_successful(res);   
+		
+		mylog("SQLExecute: ok = %d, status = %d\n", ok, QR_get_status(res));
+		
+		QR_Destructor(res);
+		
+		if (!ok) {
+			self->errormsg = "Could not begin a transaction";
+			self->errornumber = STMT_EXEC_ERROR;
+			return SQL_ERROR;
+		}
+		else
+			CC_set_in_trans(conn);
+	}
+
+
+
+	oldstatus = conn->status;
+	conn->status = CONN_EXECUTING;
+	self->status = STMT_EXECUTING;
+
+
+	//	If its a SELECT statement, use a cursor.
+	//	Note that the declare cursor has already been prepended to the statement
+	//	in copy_statement...
+	if (self->statement_type == STMT_TYPE_SELECT) {
+
+		char cursor[32];
+		char fetch[64];
+
+		sprintf(cursor, "C%u", self);
+
+		mylog("       Sending SELECT statement on stmt=%u\n", self);
+
+		/*	send the declare/select */
+		self->result = CC_send_query(conn, self->stmt_with_params, NULL, NULL);
+		if (self->result != NULL) {
+			/*	That worked, so now send the fetch to start getting data back */
+			sprintf(fetch, "fetch %d in %s", globals.fetch_max, cursor);
+			
+			//	Save the cursor in the result for later use
+			self->result = CC_send_query( conn, fetch, NULL, cursor);
+		}
+
+		mylog("     done sending the query:\n");
+		
+	}
+	else  { // not a SELECT statement so don't use a cursor 		 
+		mylog("      its NOT a select statement: stmt=%u\n", self);
+		self->result = CC_send_query(conn, self->stmt_with_params, NULL, NULL);
+		
+		//	If we are in autocommit, we must send the commit.
+		if (CC_is_in_autocommit(conn)) {
+			CC_send_query(conn, "COMMIT", NULL, NULL);
+			CC_set_no_trans(conn);
+		}
+		
+	}
+
+	conn->status = oldstatus;
+	self->status = STMT_FINISHED;
+
+	/*	Check the status of the result */
+	if (self->result) {
+
+		was_ok = QR_command_successful(self->result);
+		was_nonfatal = QR_command_nonfatal(self->result);
+		
+		if ( was_ok)
+			self->errornumber = STMT_OK;
+		else
+			self->errornumber = was_nonfatal ? STMT_INFO_ONLY : STMT_ERROR_TAKEN_FROM_BACKEND;
+		
+		self->currTuple = -1; /* set cursor before the first tuple in the list */
+		
+		/* see if the query did return any result columns */
+		numcols = QR_NumResultCols(self->result);
+		
+		/* now allocate the array to hold the binding info */
+		if (numcols > 0) {
+			extend_bindings(self, numcols);
+			if (self->bindings == NULL) {
+				self->errornumber = STMT_NO_MEMORY_ERROR;
+				self->errormsg = "Could not get enough free memory to store the binding information";
+				return SQL_ERROR;
+			}
+		}
+		
+	} else {		/* Bad Error -- The error message will be in the Connection */
+		
+		self->errornumber = STMT_EXEC_ERROR;
+		self->errormsg = "Error while executing the query";
+
+		CC_abort(conn);
+	}
+
+	if (self->errornumber == STMT_OK)
+		return SQL_SUCCESS;
+
+	else if (self->errornumber == STMT_INFO_ONLY)
+		return SQL_SUCCESS_WITH_INFO;
+
+	else 
+		return SQL_ERROR;
+}

src/interfaces/odbc/statement.h

@@ -0,0 +1,119 @@
+
+/* File:            statement.h
+ *
+ * Description:     See "statement.c"
+ *
+ * Comments:        See "notice.txt" for copyright and license information.
+ *
+ */
+
+#ifndef __STATEMENT_H__
+#define __STATEMENT_H__
+
+#include <windows.h>
+#include <sql.h>
+#include "psqlodbc.h"
+
+typedef enum {
+    STMT_ALLOCATED,     /* The statement handle is allocated, but not used so far */
+    STMT_READY,         /* the statement is waiting to be executed */
+    STMT_PREMATURE,     /* ODBC states that it is legal to call e.g. SQLDescribeCol before
+                           a call to SQLExecute, but after SQLPrepare. To get all the necessary
+                           information in such a case, we simply execute the query _before_ the
+                           actual call to SQLExecute, so that statement is considered to be "premature".
+                        */   
+    STMT_FINISHED,      /* statement execution has finished */
+    STMT_EXECUTING      /* statement execution is still going on */
+} STMT_Status;
+
+#define STMT_TRUNCATED -2
+#define STMT_INFO_ONLY -1 /* not an error message, just a notification to be returned by SQLError */
+#define STMT_OK 0 /* will be interpreted as "no error pending" */
+#define STMT_EXEC_ERROR 1
+#define STMT_STATUS_ERROR 2
+#define STMT_SEQUENCE_ERROR 3
+#define STMT_NO_MEMORY_ERROR 4
+#define STMT_COLNUM_ERROR 5
+#define STMT_NO_STMTSTRING 6
+#define STMT_ERROR_TAKEN_FROM_BACKEND 7
+#define STMT_INTERNAL_ERROR 8
+#define STMT_STILL_EXECUTING 9
+#define STMT_NOT_IMPLEMENTED_ERROR 10
+#define STMT_BAD_PARAMETER_NUMBER_ERROR 11
+#define STMT_OPTION_OUT_OF_RANGE_ERROR 12
+#define STMT_INVALID_COLUMN_NUMBER_ERROR 13
+#define STMT_RESTRICTED_DATA_TYPE_ERROR 14
+#define STMT_INVALID_CURSOR_STATE_ERROR 15
+#define STMT_OPTION_VALUE_CHANGED 16
+
+
+/* statement types */
+#define STMT_TYPE_SELECT     0
+#define STMT_TYPE_INSERT     1
+#define STMT_TYPE_UPDATE     2
+#define STMT_TYPE_DELETE     3
+#define STMT_TYPE_OTHER      4
+#define STMT_TYPE_UNKNOWN  666  // 'unknown' means we don't have the statement yet,
+                                // or haven't looked at it to see what type it is.
+                                // 'other' means we looked, but couldn't tell.
+
+
+/********	Statement Handle	***********/
+struct StatementClass_ {
+    ConnectionClass *hdbc;		/* pointer to ConnectionClass this statement belongs to */
+
+    QResultClass *result;		/* result of the current statement */
+
+    STMT_Status status;
+    char *errormsg;
+    int errornumber;
+	int maxRows;
+
+    /* information on bindings */
+    BindInfoClass *bindings;	/* array to store the binding information */
+    int bindings_allocated;
+
+    /* information on statement parameters */
+    int parameters_allocated;
+    ParameterInfoClass *parameters;
+
+	Int4 currTuple;
+
+    char *statement;			/* if non--null pointer to the SQL statement that has been executed */
+
+    int statement_type;			/* According to the defines above */
+	int data_at_exec;			/* Number of params needing SQLPutData */
+	int current_exec_param;		/* The current parameter for SQLPutData */
+
+	char put_data;				/* Has SQLPutData been called yet? */
+
+	char errormsg_created;		/* has an informative error msg been created?  */
+	char manual_result;			/* Is the statement result manually built? */
+	char prepare;				/* is this statement a prepared statement or direct */
+
+	char stmt_with_params[65536 /* MAX_STATEMENT_LEN */];		/* statement after parameter substitution */
+
+};
+
+#define SC_get_conn(a)    (a->hdbc)
+#define SC_get_Result(a)  (a->result);
+
+/*	options for SC_free_params() */
+#define STMT_FREE_PARAMS_ALL				0
+#define STMT_FREE_PARAMS_DATA_AT_EXEC_ONLY	1
+
+/*	Statement prototypes */
+StatementClass *SC_Constructor();
+char SC_Destructor(StatementClass *self);
+int statement_type(char *statement);
+void SC_pre_execute(StatementClass *self);
+char SC_unbind_cols(StatementClass *self);
+char SC_recycle_statement(StatementClass *self);
+
+void SC_clear_error(StatementClass *self);
+char SC_get_error(StatementClass *self, int *number, char **message);
+char *SC_create_errormsg(StatementClass *self);
+RETCODE SC_execute(StatementClass *stmt);
+void SC_free_params(StatementClass *self, char option);
+
+#endif

src/interfaces/odbc/tuple.c

@@ -0,0 +1,56 @@
+
+/* Module:          tuple.c
+ *
+ * Description:     This module contains functions for setting the data for individual
+ *                  fields (TupleField structure) of a manual result set.
+ *
+ * Important Note:  These functions are ONLY used in building manual result sets for 
+ *                  info functions (SQLTables, SQLColumns, etc.)
+ *
+ * Classes:         n/a
+ *
+ * API functions:   none
+ *
+ * Comments:        See "notice.txt" for copyright and license information.
+ *
+ */
+
+#include "tuple.h"
+#include <string.h>
+#include <stdlib.h>
+
+void set_tuplefield_null(TupleField *tuple_field)
+{
+	tuple_field->len = 0;
+	tuple_field->value = strdup("");
+}
+
+void set_tuplefield_string(TupleField *tuple_field, char *string)
+{
+	tuple_field->len = strlen(string);
+	tuple_field->value = malloc(strlen(string)+1);
+	strcpy(tuple_field->value, string);
+}
+
+
+void set_tuplefield_int2(TupleField *tuple_field, Int2 value)
+{
+char buffer[10];
+
+	sprintf(buffer,"%d", value);
+
+	tuple_field->len = strlen(buffer)+1;
+	/* +1 ... is this correct (better be on the save side-...) */
+	tuple_field->value = strdup(buffer);
+}
+
+void set_tuplefield_int4(TupleField *tuple_field, Int4 value)
+{
+char buffer[15];
+
+	sprintf(buffer,"%ld", value);
+
+	tuple_field->len = strlen(buffer)+1;
+	/* +1 ... is this correct (better be on the save side-...) */
+	tuple_field->value = strdup(buffer);
+}

src/interfaces/odbc/tuple.h

@@ -0,0 +1,44 @@
+
+/* File:            tuple.h
+ *
+ * Description:     See "tuple.c"
+ *
+ * Important NOTE:  The TupleField structure is used both to hold backend data and
+ *                  manual result set data.  The "set_" functions and the TupleNode
+ *                  structure are only used for manual result sets by info routines.  
+ *
+ * Comments:        See "notice.txt" for copyright and license information.
+ *
+ */
+
+#ifndef __TUPLE_H__
+#define __TUPLE_H__
+
+#include "psqlodbc.h"
+
+/*	Used by backend data AND manual result sets */
+struct TupleField_ {
+    Int4 len;     /* length of the current Tuple */
+    void *value;  /* an array representing the value */
+};
+
+/*	Used ONLY for manual result sets */
+struct TupleNode_ {
+    struct TupleNode_ *prev, *next;
+    TupleField tuple[1];
+};
+
+/*	These macros are wrappers for the corresponding set_tuplefield functions
+	but these handle automatic NULL determination and call set_tuplefield_null()
+	if appropriate for the datatype (used by SQLGetTypeInfo).
+*/
+#define set_nullfield_string(FLD, VAL)		(VAL ? set_tuplefield_string(FLD, VAL) : set_tuplefield_null(FLD))
+#define set_nullfield_int2(FLD, VAL)		(VAL != -1 ? set_tuplefield_int2(FLD, VAL) : set_tuplefield_null(FLD))
+#define set_nullfield_int4(FLD, VAL)		(VAL != -1 ? set_tuplefield_int4(FLD, VAL) : set_tuplefield_null(FLD))
+
+void set_tuplefield_null(TupleField *tuple_field);
+void set_tuplefield_string(TupleField *tuple_field, char *string);
+void set_tuplefield_int2(TupleField *tuple_field, Int2 value);
+void set_tuplefield_int4(TupleField *tuple_field, Int4 value);
+
+#endif

src/interfaces/odbc/tuplelist.c

@@ -0,0 +1,188 @@
+
+/* Module:          tuplelist.c
+ *
+ * Description:     This module contains functions for creating a manual result set
+ *                  (the TupleList) and retrieving data from it for a specific row/column.
+ *
+ * Classes:         TupleListClass (Functions prefix: "TL_")
+ *
+ * API functions:   none
+ *
+ * Comments:        See "notice.txt" for copyright and license information.
+ *
+ */
+
+#include <stdlib.h>
+#include <malloc.h>
+#include "tuplelist.h"
+#include "tuple.h"
+
+TupleListClass *
+TL_Constructor(UInt4 fieldcnt)
+{
+TupleListClass *rv;
+
+	mylog("in TL_Constructor\n");
+
+	rv = (TupleListClass *) malloc(sizeof(TupleListClass));
+	if (rv) {
+
+        rv->num_fields = fieldcnt;
+        rv->num_tuples = 0;
+        rv->list_start = NULL;
+        rv->list_end = NULL;
+        rv->lastref = NULL;
+        rv->last_indexed = -1;
+	}
+
+	mylog("exit TL_Constructor\n");
+
+	return rv;
+}
+
+void
+TL_Destructor(TupleListClass *self)
+{
+int lf;
+TupleNode *node, *tp;
+
+	mylog("TupleList: in DESTRUCTOR\n");
+
+    node = self->list_start;
+    while(node != NULL) {
+        for (lf=0; lf < self->num_fields; lf++)
+            if (node->tuple[lf].value != NULL) {
+                free(node->tuple[lf].value);
+            }
+        tp = node->next;
+        free(node);
+        node = tp;
+    }
+
+	free(self);
+
+	mylog("TupleList: exit DESTRUCTOR\n");
+}
+			
+
+void *
+TL_get_fieldval(TupleListClass *self, Int4 tupleno, Int2 fieldno)
+{
+Int4 lf;
+Int4 delta, from_end;
+char end_is_closer, start_is_closer;
+TupleNode *rv;
+
+	if (self->last_indexed == -1)
+		/* we have an empty tuple list */
+		return NULL;
+
+	/* some more sanity checks */
+	if ((tupleno >= self->num_tuples) || (tupleno < 0))
+		/* illegal tuple number range */
+		return NULL;
+
+	if ((fieldno >= self->num_fields) || (fieldno < 0))
+		/* illegel field number range */
+		return NULL;
+
+ /* check if we are accessing the same tuple that was used in
+    the last fetch (e.g: for fetching all the fields one after
+    another. Do this to speed things up
+ */
+	if (tupleno == self->last_indexed)
+		return self->lastref->tuple[fieldno].value;
+
+ /* now for the tricky part... */
+
+ /*
+ Since random access is quite inefficient for linked lists we use
+ the lastref pointer that points to the last element referenced
+ by a get_fieldval() call in conjunction with the its index number
+ that is stored in last_indexed. (So we use some locality of
+ reference principle to speed things up)
+ */
+
+	delta = tupleno - self->last_indexed;
+	/* if delta is positive, we have to go forward */
+
+	/* now check if we are closer to the start or the end of the list
+	than to our last_indexed pointer
+	*/
+	from_end = (self->num_tuples - 1) - tupleno;
+
+	start_is_closer = labs(delta) > tupleno;
+	/* true if we are closer to the start of the list than to the
+	last_indexed pointer
+	*/
+
+	end_is_closer = labs(delta) > from_end;
+	/* true if we are closer at the end of the list */
+
+	if (end_is_closer) {
+		/* scanning from the end is the shortest way. so we do that... */
+		rv = self->list_end;
+		for (lf=0; lf < from_end; lf++)
+			rv = rv->prev;
+	} else if (start_is_closer) {
+		/* the shortest way is to start the search from the head of the list */
+		rv = self->list_start;
+		for (lf=0; lf < tupleno; lf++)
+			rv = rv->next;
+	} else {
+		/* the closest way is starting from our lastref - pointer */
+		rv = self->lastref;
+		/* at first determine whether we have to search forward or backwards */
+		if (delta < 0) {
+			/* we have to search backwards */
+			for(lf=0; lf < (-1)*delta; lf++)
+				rv = rv->prev;
+		} else {
+			/* ok, we have to search forward... */
+			for (lf=0; lf < delta; lf++)
+			rv = rv->next;
+		}
+	}
+
+	/* now we have got our return pointer, so update the lastref
+		and the last_indexed values
+	*/
+	self->lastref = rv;
+	self->last_indexed = tupleno;
+
+	return rv->tuple[fieldno].value;
+}
+
+
+
+char
+TL_add_tuple(TupleListClass *self, TupleNode *new_field)
+{
+ /* we append the tuple at the end of the doubly linked list
+    of the tuples we have already read in
+ */
+
+	new_field->prev = NULL;
+	new_field->next = NULL;
+
+	if (self->list_start == NULL) {
+		/* the list is empty, we have to add the first tuple */
+		self->list_start = new_field;
+		self->list_end = new_field;
+		self->lastref = new_field;
+		self->last_indexed = 0;
+	} else {
+		/* there is already an element in the list, so add the new
+			one at the end of the list
+		*/
+		self->list_end->next = new_field;
+		new_field->prev = self->list_end;
+		self->list_end = new_field;
+	}
+	self->num_tuples++;
+
+	/* this method of building a list cannot fail, so we return 1 */
+	return 1;
+}
+
+

src/interfaces/odbc/tuplelist.h

@@ -0,0 +1,33 @@
+
+/* File:            tuplelist.h
+ *
+ * Description:     See "tuplelist.c"
+ *
+ * Important Note:  This structure and its functions are ONLY used in building manual result
+ *                  sets for info functions (SQLTables, SQLColumns, etc.)
+ *
+ * Comments:        See "notice.txt" for copyright and license information.
+ *
+ */
+
+#ifndef __TUPLELIST_H__
+#define __TUPLELIST_H__
+
+#include "psqlodbc.h"
+
+struct TupleListClass_ {
+	Int4 num_fields;
+	Int4 num_tuples;  
+	TupleNode *list_start, *list_end, *lastref;
+	Int4 last_indexed;
+};
+
+#define TL_get_num_tuples(x)	(x->num_tuples)
+
+/* Create a TupleList. Each tuple consits of fieldcnt columns */
+TupleListClass *TL_Constructor(UInt4 fieldcnt);
+void TL_Destructor(TupleListClass *self);  
+void *TL_get_fieldval(TupleListClass *self, Int4 tupleno, Int2 fieldno);
+char TL_add_tuple(TupleListClass *self, TupleNode *new_field);
+
+#endif