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winhttp: Don't perform buffer size tests for components that don't pass buffer in WinHttpCrackUrl. 

Signed-off-by: Jacek Caban <jacek@codeweavers.com>
Signed-off-by: Hans Leidekker <hans@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Jacek Caban 2016-08-30 20:52:21 +02:00 committed by Alexandre Julliard
parent f40a9d6172
commit 985443ed87
2 changed files with 30 additions and 67 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
dlls/winhttp/tests/url.c
View File

@ -313,7 +313,7 @@ static void reset_url_components( URL_COMPONENTS *uc )
memset( uc, 0, sizeof(URL_COMPONENTS) );
uc->dwStructSize = sizeof(URL_COMPONENTS);
uc->dwSchemeLength = ~0u;
uc->dwHostNameLength = ~0u;
uc->dwHostNameLength = 1;
uc->nPort = 0;
uc->dwUserNameLength = ~0u;
uc->dwPasswordLength = ~0u;
@ -405,6 +405,8 @@ static void WinHttpCrackUrl_test( void )
ok( uc.dwExtraInfoLength == 0, "unexpected extra info length\n" );
reset_url_components( &uc );
uc.dwSchemeLength = uc.dwHostNameLength = uc.dwUserNameLength = 1;
uc.dwPasswordLength = uc.dwUrlPathLength = uc.dwExtraInfoLength = 1;
ret = WinHttpCrackUrl( url_k2, 0, 0,&uc);
ok( ret, "WinHttpCrackUrl failed le=%u\n", GetLastError() );
ok( uc.nScheme == INTERNET_SCHEME_HTTP, "unexpected scheme\n" );

93
dlls/winhttp/url.c
View File

@ -34,7 +34,7 @@ WINE_DEFAULT_DEBUG_CHANNEL(winhttp);
static const WCHAR scheme_http[] = {'h','t','t','p',0};
static const WCHAR scheme_https[] = {'h','t','t','p','s',0};
static DWORD set_component( WCHAR **str, DWORD *str_len, WCHAR *value, DWORD len, DWORD flags )
static DWORD set_component( WCHAR **str, DWORD *str_len, WCHAR *value, DWORD len, DWORD flags, BOOL *overflow )
{
if (*str && !*str_len) return ERROR_INVALID_PARAMETER;
if (!*str_len) return ERROR_SUCCESS;
@ -48,7 +48,8 @@ static DWORD set_component( WCHAR **str, DWORD *str_len, WCHAR *value, DWORD len
{
if (len >= *str_len)
{
*str_len = len;
*str_len = len+1;
*overflow = TRUE;
return ERROR_SUCCESS;
}
memcpy( *str, value, len * sizeof(WCHAR) );
@ -182,8 +183,9 @@ static DWORD parse_port( const WCHAR *str, DWORD len, INTERNET_PORT *ret )
BOOL WINAPI WinHttpCrackUrl( LPCWSTR url, DWORD len, DWORD flags, LPURL_COMPONENTSW uc )
{
WCHAR *p, *q, *r, *url_decoded = NULL, *url_escaped = NULL;
DWORD err, scheme_len, user_len, passwd_len, host_len, path_len, extra_len;
INTERNET_SCHEME scheme = 0;
BOOL overflow = FALSE;
DWORD err;
TRACE("%s, %d, %x, %p\n", debugstr_wn(url, len), len, flags, uc);
@ -193,12 +195,6 @@ BOOL WINAPI WinHttpCrackUrl( LPCWSTR url, DWORD len, DWORD flags, LPURL_COMPONEN
return FALSE;
}
if (!len) len = strlenW( url );
scheme_len = uc->dwSchemeLength;
host_len = uc->dwHostNameLength;
user_len = uc->dwUserNameLength;
passwd_len = uc->dwPasswordLength;
path_len = uc->dwUrlPathLength;
extra_len = uc->dwExtraInfoLength;
if (flags & ICU_ESCAPE)
{
@ -231,7 +227,7 @@ BOOL WINAPI WinHttpCrackUrl( LPCWSTR url, DWORD len, DWORD flags, LPURL_COMPONEN
goto exit;
}
if ((err = set_component( &uc->lpszScheme, &scheme_len, (WCHAR *)url, p - url, flags ))) goto exit;
if ((err = set_component( &uc->lpszScheme, &uc->dwSchemeLength, (WCHAR *)url, p - url, flags, &overflow ))) goto exit;
p++; /* skip ':' */
if (!p[0] || p[0] != '/' || p[1] != '/')
@ -249,110 +245,75 @@ BOOL WINAPI WinHttpCrackUrl( LPCWSTR url, DWORD len, DWORD flags, LPURL_COMPONEN
{
if ((r = memchrW( p, ':', q - p )))
{
if ((err = set_component( &uc->lpszUserName, &user_len, p, r - p, flags ))) goto exit;
if ((err = set_component( &uc->lpszUserName, &uc->dwUserNameLength, p, r - p, flags, &overflow ))) goto exit;
r++;
if ((err = set_component( &uc->lpszPassword, &passwd_len, r, q - r, flags ))) goto exit;
if ((err = set_component( &uc->lpszPassword, &uc->dwPasswordLength, r, q - r, flags, &overflow ))) goto exit;
}
else
{
if ((err = set_component( &uc->lpszUserName, &user_len, p, q - p, flags ))) goto exit;
if ((err = set_component( &uc->lpszPassword, &passwd_len, NULL, 0, flags ))) goto exit;
if ((err = set_component( &uc->lpszUserName, &uc->dwUserNameLength, p, q - p, flags, &overflow ))) goto exit;
if ((err = set_component( &uc->lpszPassword, &uc->dwPasswordLength, NULL, 0, flags, &overflow ))) goto exit;
}
p = q + 1;
}
else
{
if ((err = set_component( &uc->lpszUserName, &user_len, NULL, 0, flags ))) goto exit;
if ((err = set_component( &uc->lpszPassword, &passwd_len, NULL, 0, flags ))) goto exit;
if ((err = set_component( &uc->lpszUserName, &uc->dwUserNameLength, NULL, 0, flags, &overflow ))) goto exit;
if ((err = set_component( &uc->lpszPassword, &uc->dwPasswordLength, NULL, 0, flags, &overflow ))) goto exit;
}
if ((q = memchrW( p, '/', len - (p - url) )))
{
if ((r = memchrW( p, ':', q - p )))
{
if ((err = set_component( &uc->lpszHostName, &host_len, p, r - p, flags ))) goto exit;
if ((err = set_component( &uc->lpszHostName, &uc->dwHostNameLength, p, r - p, flags, &overflow ))) goto exit;
r++;
if ((err = parse_port( r, q - r, &uc->nPort ))) goto exit;
}
else
{
if ((err = set_component( &uc->lpszHostName, &host_len, p, q - p, flags ))) goto exit;
if ((err = set_component( &uc->lpszHostName, &uc->dwHostNameLength, p, q - p, flags, &overflow ))) goto exit;
if (scheme == INTERNET_SCHEME_HTTP) uc->nPort = INTERNET_DEFAULT_HTTP_PORT;
if (scheme == INTERNET_SCHEME_HTTPS) uc->nPort = INTERNET_DEFAULT_HTTPS_PORT;
}
if ((r = memchrW( q, '?', len - (q - url) )))
{
if ((err = set_component( &uc->lpszUrlPath, &path_len, q, r - q, flags ))) goto exit;
if ((err = set_component( &uc->lpszExtraInfo, &extra_len, r, len - (r - url), flags ))) goto exit;
if ((err = set_component( &uc->lpszUrlPath, &uc->dwUrlPathLength, q, r - q, flags, &overflow ))) goto exit;
if ((err = set_component( &uc->lpszExtraInfo, &uc->dwExtraInfoLength, r, len - (r - url), flags, &overflow ))) goto exit;
}
else
{
if ((err = set_component( &uc->lpszUrlPath, &path_len, q, len - (q - url), flags ))) goto exit;
if ((err = set_component( &uc->lpszExtraInfo, &extra_len, (WCHAR *)url + len, 0, flags ))) goto exit;
if ((err = set_component( &uc->lpszUrlPath, &uc->dwUrlPathLength, q, len - (q - url), flags, &overflow ))) goto exit;
if ((err = set_component( &uc->lpszExtraInfo, &uc->dwExtraInfoLength, (WCHAR *)url + len, 0, flags, &overflow ))) goto exit;
}
}
else
{
if ((r = memchrW( p, ':', len - (p - url) )))
{
if ((err = set_component( &uc->lpszHostName, &host_len, p, r - p, flags ))) goto exit;
if ((err = set_component( &uc->lpszHostName, &uc->dwHostNameLength, p, r - p, flags, &overflow ))) goto exit;
r++;
if ((err = parse_port( r, len - (r - url), &uc->nPort ))) goto exit;
}
else
{
if ((err = set_component( &uc->lpszHostName, &host_len, p, len - (p - url), flags ))) goto exit;
if ((err = set_component( &uc->lpszHostName, &uc->dwHostNameLength, p, len - (p - url), flags, &overflow ))) goto exit;
if (scheme == INTERNET_SCHEME_HTTP) uc->nPort = INTERNET_DEFAULT_HTTP_PORT;
if (scheme == INTERNET_SCHEME_HTTPS) uc->nPort = INTERNET_DEFAULT_HTTPS_PORT;
}
if ((err = set_component( &uc->lpszUrlPath, &path_len, (WCHAR *)url + len, 0, flags ))) goto exit;
if ((err = set_component( &uc->lpszExtraInfo, &extra_len, (WCHAR *)url + len, 0, flags ))) goto exit;
if ((err = set_component( &uc->lpszUrlPath, &uc->dwUrlPathLength, (WCHAR *)url + len, 0, flags, &overflow ))) goto exit;
if ((err = set_component( &uc->lpszExtraInfo, &uc->dwExtraInfoLength, (WCHAR *)url + len, 0, flags, &overflow ))) goto exit;
}
TRACE("scheme(%s) host(%s) port(%d) path(%s) extra(%s)\n", debugstr_wn( uc->lpszScheme, scheme_len ),
debugstr_wn( uc->lpszHostName, host_len ), uc->nPort, debugstr_wn( uc->lpszUrlPath, path_len ),
debugstr_wn( uc->lpszExtraInfo, extra_len ));
TRACE("scheme(%s) host(%s) port(%d) path(%s) extra(%s)\n", debugstr_wn( uc->lpszScheme, uc->dwSchemeLength ),
debugstr_wn( uc->lpszHostName, uc->dwHostNameLength ), uc->nPort, debugstr_wn( uc->lpszUrlPath, uc->dwUrlPathLength ),
debugstr_wn( uc->lpszExtraInfo, uc->dwExtraInfoLength ));
exit:
if (!err)
{
if (uc->lpszScheme && uc->dwSchemeLength <= scheme_len)
{
scheme_len++;
err = ERROR_INSUFFICIENT_BUFFER;
}
if (uc->lpszHostName && uc->dwHostNameLength <= host_len)
{
host_len++;
err = ERROR_INSUFFICIENT_BUFFER;
}
if (uc->lpszUserName && uc->dwUserNameLength <= user_len)
{
user_len++;
err = ERROR_INSUFFICIENT_BUFFER;
}
if (uc->lpszPassword && uc->dwPasswordLength <= passwd_len)
{
passwd_len++;
err = ERROR_INSUFFICIENT_BUFFER;
}
if (uc->lpszUrlPath && uc->dwUrlPathLength <= path_len)
{
path_len++;
err = ERROR_INSUFFICIENT_BUFFER;
}
if (uc->lpszExtraInfo && uc->dwExtraInfoLength <= extra_len)
{
extra_len++;
err = ERROR_INSUFFICIENT_BUFFER;
}
uc->nScheme = scheme;
uc->dwSchemeLength = scheme_len;
uc->dwHostNameLength = host_len;
uc->dwUserNameLength = user_len;
uc->dwPasswordLength = passwd_len;
uc->dwUrlPathLength = path_len;
uc->dwExtraInfoLength = extra_len;
if (overflow) err = ERROR_INSUFFICIENT_BUFFER;
uc->nScheme = scheme;
}
heap_free( url_decoded );
heap_free( url_escaped );