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037f07006d
libmysql/manager.c: Code clean-up: as my_net_read() returns ulong value we should use ulong here.
272 lines
6.7 KiB
C
272 lines
6.7 KiB
C
/* Copyright (C) 2000-2004 MySQL AB
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation.
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There are special exceptions to the terms and conditions of the GPL as it
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is applied to this software. View the full text of the exception in file
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EXCEPTIONS-CLIENT in the directory of this software distribution.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
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#include <my_global.h>
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#if defined(THREAD)
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#include <my_pthread.h> /* because of signal() */
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#endif
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#include "mysql.h"
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#include "mysql_version.h"
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#include "mysqld_error.h"
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#include <my_sys.h>
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#include <mysys_err.h>
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#include <m_string.h>
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#include <m_ctype.h>
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#include <my_net.h>
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#include <errmsg.h>
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#include <violite.h>
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#include <sys/stat.h>
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#include <signal.h>
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#include <errno.h>
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#if defined(OS2)
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# include <sys/un.h>
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#elif defined(__NETWARE__)
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#include <netdb.h>
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#include <sys/select.h>
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#include <sys/utsname.h>
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#elif !defined( __WIN__)
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#include <sys/resource.h>
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#ifdef HAVE_SYS_UN_H
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# include <sys/un.h>
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#endif
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#include <netdb.h>
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#ifdef HAVE_SELECT_H
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# include <select.h>
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#endif
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#ifdef HAVE_SYS_SELECT_H
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#include <sys/select.h>
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#endif
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#include <sys/utsname.h>
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#endif /* __WIN__ */
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#ifndef INADDR_NONE
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#define INADDR_NONE -1
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#endif
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#define RES_BUF_SHIFT 5
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#define NET_BUF_SIZE 2048
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MYSQL_MANAGER* STDCALL mysql_manager_init(MYSQL_MANAGER* con)
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{
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int net_buf_size=NET_BUF_SIZE;
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if (!con)
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{
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if (!(con=(MYSQL_MANAGER*)my_malloc(sizeof(*con)+net_buf_size,
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MYF(MY_WME|MY_ZEROFILL))))
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return 0;
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con->free_me=1;
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con->net_buf=(char*)con+sizeof(*con);
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}
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else
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{
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bzero((char*)con,sizeof(*con));
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if (!(con->net_buf=my_malloc(net_buf_size,MYF(0))))
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return 0;
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}
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con->net_buf_pos=con->net_data_end=con->net_buf;
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con->net_buf_size=net_buf_size;
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return con;
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}
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MYSQL_MANAGER* STDCALL mysql_manager_connect(MYSQL_MANAGER* con,
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const char* host,
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const char* user,
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const char* passwd,
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unsigned int port)
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{
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my_socket sock;
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struct sockaddr_in sock_addr;
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in_addr_t ip_addr;
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char msg_buf[MAX_MYSQL_MANAGER_MSG];
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int msg_len;
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Vio* vio;
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my_bool not_used;
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if (!host)
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host="localhost";
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if (!user)
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user="root";
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if (!passwd)
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passwd="";
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if ((sock=(my_socket)socket(AF_INET,SOCK_STREAM,0)) == INVALID_SOCKET)
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{
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con->last_errno=errno;
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strmov(con->last_error,"Cannot create socket");
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goto err;
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}
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if (!(vio=vio_new(sock,VIO_TYPE_TCPIP,FALSE)))
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{
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con->last_errno=ENOMEM;
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strmov(con->last_error,"Cannot create network I/O object");
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goto err;
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}
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vio_blocking(vio, TRUE, ¬_used);
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my_net_init(&con->net,vio);
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bzero((char*) &sock_addr,sizeof(sock_addr));
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sock_addr.sin_family = AF_INET;
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if ((int) (ip_addr = inet_addr(host)) != (int) INADDR_NONE)
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{
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memcpy_fixed(&sock_addr.sin_addr,&ip_addr,sizeof(ip_addr));
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}
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else
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{
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int tmp_errno;
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struct hostent tmp_hostent,*hp;
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char buff2[GETHOSTBYNAME_BUFF_SIZE];
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hp = my_gethostbyname_r(host,&tmp_hostent,buff2,sizeof(buff2),
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&tmp_errno);
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if (!hp)
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{
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con->last_errno=tmp_errno;
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sprintf(con->last_error,"Could not resolve host '%-.64s'",host);
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my_gethostbyname_r_free();
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goto err;
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}
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memcpy(&sock_addr.sin_addr,hp->h_addr, (size_t) hp->h_length);
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my_gethostbyname_r_free();
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}
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sock_addr.sin_port = (ushort) htons((ushort) port);
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if (my_connect(sock,(struct sockaddr *) &sock_addr, sizeof(sock_addr),
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0))
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{
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con->last_errno=errno;
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sprintf(con->last_error ,"Could not connect to %-.64s", host);
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goto err;
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}
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/* read the greating */
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if (my_net_read(&con->net) == packet_error)
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{
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con->last_errno=errno;
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strmov(con->last_error,"Read error on socket");
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goto err;
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}
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sprintf(msg_buf,"%-.16s %-.16s\n",user,passwd);
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msg_len=strlen(msg_buf);
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if (my_net_write(&con->net,msg_buf,msg_len) || net_flush(&con->net))
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{
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con->last_errno=con->net.last_errno;
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strmov(con->last_error,"Write error on socket");
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goto err;
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}
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if (my_net_read(&con->net) == packet_error)
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{
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con->last_errno=errno;
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strmov(con->last_error,"Read error on socket");
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goto err;
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}
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if ((con->cmd_status=atoi((char*) con->net.read_pos)) != MANAGER_OK)
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{
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strmov(con->last_error,"Access denied");
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goto err;
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}
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if (!my_multi_malloc(MYF(0), &con->host, (uint)strlen(host)+1,
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&con->user, (uint)strlen(user)+1,
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&con->passwd, (uint)strlen(passwd)+1,
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NullS))
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{
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con->last_errno=ENOMEM;
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strmov(con->last_error,"Out of memory");
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goto err;
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}
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strmov(con->host,host);
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strmov(con->user,user);
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strmov(con->passwd,passwd);
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return con;
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err:
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{
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my_bool free_me=con->free_me;
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con->free_me=0;
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mysql_manager_close(con);
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con->free_me=free_me;
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}
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return 0;
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}
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void STDCALL mysql_manager_close(MYSQL_MANAGER* con)
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{
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/*
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No need to free con->user and con->passwd, because they were
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allocated in my_multimalloc() along with con->host, freeing
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con->hosts frees the whole block
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*/
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my_free((gptr)con->host,MYF(MY_ALLOW_ZERO_PTR));
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net_end(&con->net);
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if (con->free_me)
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my_free((gptr)con,MYF(0));
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}
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int STDCALL mysql_manager_command(MYSQL_MANAGER* con,const char* cmd,
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int cmd_len)
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{
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if (!cmd_len)
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cmd_len=strlen(cmd);
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if (my_net_write(&con->net,(char*)cmd,cmd_len) || net_flush(&con->net))
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{
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con->last_errno=errno;
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strmov(con->last_error,"Write error on socket");
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return 1;
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}
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con->eof=0;
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return 0;
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}
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int STDCALL mysql_manager_fetch_line(MYSQL_MANAGER* con, char* res_buf,
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int res_buf_size)
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{
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char* res_buf_end=res_buf+res_buf_size;
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char* net_buf=(char*) con->net.read_pos, *net_buf_end;
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int res_buf_shift=RES_BUF_SHIFT;
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ulong num_bytes;
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if (res_buf_size<RES_BUF_SHIFT)
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{
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con->last_errno=ENOMEM;
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strmov(con->last_error,"Result buffer too small");
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return 1;
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}
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if ((num_bytes=my_net_read(&con->net)) == packet_error)
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{
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con->last_errno=errno;
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strmov(con->last_error,"socket read failed");
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return 1;
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}
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net_buf_end=net_buf+num_bytes;
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if ((con->eof=(net_buf[3]==' ')))
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res_buf_shift--;
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net_buf+=res_buf_shift;
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res_buf_end[-1]=0;
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for (;net_buf<net_buf_end && res_buf < res_buf_end;res_buf++,net_buf++)
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{
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if ((*res_buf=*net_buf) == '\r')
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{
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*res_buf=0;
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break;
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}
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}
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return 0;
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}
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