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wininet: Fixed handling NULL buffer in INTERNET_OPTION_PROXY queries.

This commit is contained in:
Jacek Caban 2013-01-07 18:12:01 +01:00 committed by Alexandre Julliard
parent 4778a5e27d
commit 81edd2acfc
2 changed files with 8 additions and 2 deletions
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4
dlls/wininet/internet.c
View File

@ -821,7 +821,7 @@ static DWORD APPINFO_QueryOption(object_header_t *hdr, DWORD option, void *buffe
proxyBytesRequired = (lstrlenW(ai->proxy) + 1) * sizeof(WCHAR);
if (ai->proxyBypass)
proxyBypassBytesRequired = (lstrlenW(ai->proxyBypass) + 1) * sizeof(WCHAR);
if (*size < sizeof(INTERNET_PROXY_INFOW) + proxyBytesRequired + proxyBypassBytesRequired)
if (!pi || *size < sizeof(INTERNET_PROXY_INFOW) + proxyBytesRequired + proxyBypassBytesRequired)
{
*size = sizeof(INTERNET_PROXY_INFOW) + proxyBytesRequired + proxyBypassBytesRequired;
return ERROR_INSUFFICIENT_BUFFER;
@ -854,7 +854,7 @@ static DWORD APPINFO_QueryOption(object_header_t *hdr, DWORD option, void *buffe
if (ai->proxyBypass)
proxyBypassBytesRequired = WideCharToMultiByte(CP_ACP, 0, ai->proxyBypass, -1,
NULL, 0, NULL, NULL);
if (*size < sizeof(INTERNET_PROXY_INFOA) + proxyBytesRequired + proxyBypassBytesRequired)
if (!pi || *size < sizeof(INTERNET_PROXY_INFOA) + proxyBytesRequired + proxyBypassBytesRequired)
{
*size = sizeof(INTERNET_PROXY_INFOA) + proxyBytesRequired + proxyBypassBytesRequired;
return ERROR_INSUFFICIENT_BUFFER;

6
dlls/wininet/tests/internet.c
View File

@ -164,6 +164,12 @@ static void test_InternetQueryOptionA(void)
int retval;
BOOL res;
SetLastError(0xdeadbeef);
len = 0xdeadbeef;
retval = InternetQueryOptionA(NULL, INTERNET_OPTION_PROXY, NULL, &len);
ok(!retval && GetLastError() == ERROR_INSUFFICIENT_BUFFER, "Got wrong error %x(%u)\n", retval, GetLastError());
ok(len >= sizeof(INTERNET_PROXY_INFO) && len != 0xdeadbeef,"len = %u\n", len);
hinet = InternetOpenA(useragent,INTERNET_OPEN_TYPE_DIRECT,NULL,NULL, 0);
ok((hinet != 0x0),"InternetOpen Failed\n");