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/*
Copyright (c) 2000 by Anatoli Soltan.
Covered by the GPL license.
*/
#include <cl/needs.h>
#ifdef NEEDS_UNC
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#include <svrapi.h>
#include <malloc.h>
#include <string.h>
#if (__MINGW32_MAJOR_VERSION>=2) && !defined(alloca)
#define alloca __builtin_alloca
#endif
#if _MSC_VER >= 1400
#undef strupr
#define strupr(a) _strupr(a)
#endif
static HMODULE hLib;
static API_RET_TYPE
(APIENTRY *pNetShareGetInfo) (
const char FAR * pszServer,
const char FAR * pszNetName,
short sLevel,
char FAR * pbBuffer,
unsigned short cbBuffer,
unsigned short FAR * pcbTotalAvail
);
/**[txh]********************************************************************
Description:
Internal helper to validate an UNC for Win9x/Me.
Return: 1 if that's an existing share.
***************************************************************************/
int CLY_isUNC_helper_95(const char* server, const char* share)
{
struct share_info_1* pshi1;
struct share_info_50* pshi50;
NET_API_STATUS status;
short level;
unsigned short cbTotalAvail;
int ret;
char *userver, *ushare;
/*
* Win95 wants server name to be prefixed by two slashes and share
* name to be uppercased.
*/
userver = alloca(strlen(server) + 3);
ushare = alloca(strlen(share) + 1);
userver[0] = '/';
userver[1] = '/';
strcpy(userver + 2, server);
strcpy(ushare, share);
strupr(ushare);
if (!hLib)
{
hLib = LoadLibrary(TEXT("SVRAPI.DLL"));
if (!hLib)
{
ret = -1;
goto clean;
}
}
if (!pNetShareGetInfo)
{
pNetShareGetInfo = (void*)GetProcAddress(hLib, "NetShareGetInfo");
if (!pNetShareGetInfo)
{
ret = -1;
goto clean;
}
}
level = 50;
status = (*pNetShareGetInfo)(userver, ushare, level, NULL, 0, &cbTotalAvail);
if (status == ERROR_INVALID_LEVEL)
{
level = 1;
status = (*pNetShareGetInfo)(userver, ushare, level, NULL, 0, &cbTotalAvail);
}
if (status != NERR_BufTooSmall)
return 0;
pshi1 = (struct share_info_1 *)malloc(cbTotalAvail);
pshi50 = (struct share_info_50 *)pshi1;
status = (*pNetShareGetInfo)(userver, ushare, level, (char*)pshi1, cbTotalAvail, &cbTotalAvail);
ret = (status == 0) &&
((level == 1 ? pshi1->shi1_type : pshi50->shi50_type) == STYPE_DISKTREE);
free(pshi1);
return ret;
clean:
if (hLib)
{
FreeLibrary(hLib);
hLib = NULL;
pNetShareGetInfo = NULL;
}
return ret;
}
#endif // NEEDS_UNC
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