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Load netmsg.dll locally in winsock_strerror, to avoid actual and

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potential problems discussed in pgsql-interfaces.
This commit is contained in:
Tom Lane
2001-11-28 19:40:29 +00:00
parent 9d596e0e3e
commit 3312b8ed3c
3 changed files with 42 additions and 29 deletions
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58
src/interfaces/libpq/fe-misc.c
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@ -25,7 +25,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/interfaces/libpq/fe-misc.c,v 1.63 2001/11/27 18:21:51 tgl Exp $
* $Header: /cvsroot/pgsql/src/interfaces/libpq/fe-misc.c,v 1.64 2001/11/28 19:40:29 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -37,6 +37,8 @@
#include <time.h>
#ifdef WIN32
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#include "win32.h"
#else
#include <unistd.h>
@ -858,41 +860,59 @@ libpq_gettext(const char *msgid)
* If you can verify this working on win9x or have a solution, let us know, ok?
*/
const char *
winsock_strerror(DWORD eno)
winsock_strerror(int eno)
{
#define WSSE_MAXLEN (sizeof(winsock_strerror_buf)-1-12) /* 12 == "(0x00000000)" */
static char err_buf[512];
#define WSSE_MAXLEN (sizeof(err_buf)-1-13) /* 13 == " (0x00000000)" */
HINSTANCE netmsgModule;
int length;
/* First try the "system table", this works on Win2k pro */
if (FormatMessage(
FORMAT_MESSAGE_IGNORE_INSERTS | FORMAT_MESSAGE_FROM_SYSTEM,
0, eno, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
winsock_strerror_buf, WSSE_MAXLEN, NULL
))
FORMAT_MESSAGE_IGNORE_INSERTS | FORMAT_MESSAGE_FROM_SYSTEM,
0,
eno,
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
err_buf,
WSSE_MAXLEN,
NULL))
goto WSSE_GOODEXIT;
/* That didn't work, let's try the netmsg.dll */
if (netmsgModule &&
FormatMessage(
FORMAT_MESSAGE_IGNORE_INSERTS | FORMAT_MESSAGE_FROM_HMODULE,
0, eno, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
winsock_strerror_buf, WSSE_MAXLEN, NULL
))
goto WSSE_GOODEXIT;
netmsgModule = LoadLibraryEx("netmsg.dll",
NULL,
LOAD_LIBRARY_AS_DATAFILE);
if (netmsgModule != NULL)
{
if (FormatMessage(
FORMAT_MESSAGE_IGNORE_INSERTS | FORMAT_MESSAGE_FROM_HMODULE,
netmsgModule,
eno,
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
err_buf,
WSSE_MAXLEN,
NULL))
{
FreeLibrary(netmsgModule);
goto WSSE_GOODEXIT;
}
FreeLibrary(netmsgModule);
}
/* Everything failed, just tell the user that we don't know the desc */
strcpy(winsock_strerror_buf, "Socket error, no description available.");
strcpy(err_buf, "Socket error, no description available.");
WSSE_GOODEXIT:
length = strlen(winsock_strerror_buf);
sprintf(winsock_strerror_buf + (length < WSSE_MAXLEN ? length : WSSE_MAXLEN),
"(0x%08X)", eno);
length = strlen(err_buf);
sprintf(err_buf + (length < WSSE_MAXLEN ? length : WSSE_MAXLEN),
" (0x%08X)", eno);
return winsock_strerror_buf;
return err_buf;
}
#endif