win32.c File Reference

#include "postgres_fe.h"
#include "win32.h"

Include dependency graph for win32.c:

Go to the source code of this file.

Data Structures
struct	WSErrorEntry
struct	MessageDLL

Macros
#define	VC_EXTRALEAN
#define	NOGDI
#define	NOCRYPT
#define	libpq_gettext(x)   (x)
#define	DLLS_SIZE   (sizeof(dlls)/sizeof(struct MessageDLL))

Functions
static int	LookupWSErrorMessage (DWORD err, char *dest)
const char *	winsock_strerror (int err, char *strerrbuf, size_t buflen)

Variables
static struct WSErrorEntry	WSErrors []
struct MessageDLL	dlls []

Macro Definition Documentation

DLLS_SIZE

#define DLLS_SIZE   (sizeof(dlls)/sizeof(struct MessageDLL))

Definition at line 268 of file win32.c.

Referenced by winsock_strerror().

libpq_gettext

#define libpq_gettext

(

x

)

(x)

Definition at line 39 of file win32.c.

Referenced by winsock_strerror().

NOCRYPT

#define NOCRYPT

Definition at line 29 of file win32.c.

NOGDI

#define NOGDI

Definition at line 27 of file win32.c.

VC_EXTRALEAN

#define VC_EXTRALEAN

Definition at line 25 of file win32.c.

Function Documentation

LookupWSErrorMessage()

static int LookupWSErrorMessage ( DWORD  err, char *  dest  )

static

Definition at line 218 of file win32.c.

References WSErrorEntry::description, WSErrorEntry::error, and WSErrors.

Referenced by winsock_strerror().

{
    struct WSErrorEntry *e;

    for (e = WSErrors; e->description; e++)
    {
        if (e->error == err)
        {
            strcpy(dest, e->description);
            return 1;
        }
    }
    return 0;
}

winsock_strerror()

const char* winsock_strerror	(	int	err,
		char *	strerrbuf,
		size_t	buflen
	)

Definition at line 281 of file win32.c.

References dlls, DLLS_SIZE, MessageDLL::handle, i, libpq_gettext, MessageDLL::loaded, LookupWSErrorMessage(), sprintf, and success.

{
    unsigned long flags;
    int         offs,
                i;
    int         success = LookupWSErrorMessage(err, strerrbuf);

    for (i = 0; !success && i < DLLS_SIZE; i++)
    {

        if (!dlls[i].loaded)
        {
            dlls[i].loaded = 1; /* Only load once */
            dlls[i].handle = (void *) LoadLibraryEx(
                                                    dlls[i].dll_name,
                                                    0,
                                                    LOAD_LIBRARY_AS_DATAFILE);
        }

        if (dlls[i].dll_name && !dlls[i].handle)
            continue;           /* Didn't load */

        flags = FORMAT_MESSAGE_FROM_SYSTEM
            | FORMAT_MESSAGE_IGNORE_INSERTS
            | (dlls[i].handle ? FORMAT_MESSAGE_FROM_HMODULE : 0);

        success = 0 != FormatMessage(
                                     flags,
                                     dlls[i].handle, err,
                                     MAKELANGID(LANG_ENGLISH, SUBLANG_DEFAULT),
                                     strerrbuf, buflen - 64,
                                     0
            );
    }

    if (!success)
        sprintf(strerrbuf, libpq_gettext("unrecognized socket error: 0x%08X/%d"), err, err);
    else
    {
        strerrbuf[buflen - 1] = '\0';
        offs = strlen(strerrbuf);
        if (offs > (int) buflen - 64)
            offs = buflen - 64;
        sprintf(strerrbuf + offs, " (0x%08X/%d)", err, err);
    }
    return strerrbuf;
}

Variable Documentation

dlls

struct MessageDLL dlls[]

Initial value:

=

{
    {
        "netmsg.dll", 0, 0
    },
    {
        "winsock.dll", 0, 0
    },
    {
        "ws2_32.dll", 0, 0
    },
    {
        "wsock32n.dll", 0, 0
    },
    {
        "mswsock.dll", 0, 0
    },
    {
        "ws2help.dll", 0, 0
    },
    {
        "ws2thk.dll", 0, 0
    },
    {
        0, 0, 1
    }                           
}

Referenced by winsock_strerror().

WSErrors

struct WSErrorEntry WSErrors[]

static

Referenced by LookupWSErrorMessage().