winhttp: Only set the scheme if we have a valid URL.

dlls/winhttp/tests/url.c

@@ -658,6 +658,41 @@ static void WinHttpCrackUrl_test( void )
     ok( uc.dwUrlPathLength == 5, "unexpected length %u\n", uc.dwUrlPathLength );
     ok( !uc.lpszExtraInfo[0], "unexpected extra info %s\n", wine_dbgstr_w(uc.lpszExtraInfo) );
     ok( uc.dwExtraInfoLength == 0, "unexpected length %u\n", uc.dwExtraInfoLength );
+
+    uc.dwStructSize = sizeof(uc);
+    uc.lpszScheme = scheme;
+    uc.dwSchemeLength = 0;
+    uc.nScheme = 0;
+    uc.lpszHostName = NULL;
+    uc.dwHostNameLength = 0;
+    uc.nPort = 0;
+    uc.lpszUserName = NULL;
+    uc.dwUserNameLength = ~0u;
+    uc.lpszPassword = NULL;
+    uc.dwPasswordLength = ~0u;
+    uc.lpszUrlPath = NULL;
+    uc.dwUrlPathLength = 0;
+    uc.lpszExtraInfo = NULL;
+    uc.dwExtraInfoLength = 0;
+    SetLastError( 0xdeadbeef );
+    ret = WinHttpCrackUrl( url15, 0, 0, &uc );
+    error = GetLastError();
+    ok( !ret, "WinHttpCrackUrl succeeded\n" );
+    ok( error == ERROR_INVALID_PARAMETER, "got %u\n", error );
+    ok( !lstrcmpW( uc.lpszScheme, http ), "unexpected scheme %s\n", wine_dbgstr_w(uc.lpszScheme) );
+    ok( !uc.dwSchemeLength, "unexpected length %u\n", uc.dwSchemeLength );
+    ok( uc.nScheme == 0, "unexpected scheme %u\n", uc.nScheme );
+    ok( !uc.lpszHostName, "unexpected hostname %s\n", wine_dbgstr_w(uc.lpszHostName) );
+    ok( uc.dwHostNameLength == 0, "unexpected length %u\n", uc.dwHostNameLength );
+    ok( uc.nPort == 0, "unexpected port %u\n", uc.nPort );
+    ok( !uc.lpszUserName, "unexpected username\n" );
+    ok( uc.dwUserNameLength == ~0u, "unexpected length %u\n", uc.dwUserNameLength );
+    ok( !uc.lpszPassword, "unexpected password\n" );
+    ok( uc.dwPasswordLength == ~0u, "unexpected length %u\n", uc.dwPasswordLength );
+    ok( !uc.lpszUrlPath, "unexpected path %s\n", wine_dbgstr_w(uc.lpszUrlPath) );
+    ok( uc.dwUrlPathLength == 0, "unexpected length %u\n", uc.dwUrlPathLength );
+    ok( !uc.lpszExtraInfo, "unexpected extra info %s\n", wine_dbgstr_w(uc.lpszExtraInfo) );
+    ok( uc.dwExtraInfoLength == 0, "unexpected length %u\n", uc.dwExtraInfoLength );
 }
 
 START_TEST(url)

dlls/winhttp/url.c

@@ -36,6 +36,11 @@ static const WCHAR scheme_https[] = {'h','t','t','p','s',0};
 
 static BOOL set_component( WCHAR **str, DWORD *str_len, WCHAR *value, DWORD len, DWORD flags )
 {
+    if (*str && !*str_len)
+    {
+        set_last_error( ERROR_INVALID_PARAMETER );
+        return FALSE;
+    }
     if (!*str_len) return TRUE;
     if (!*str)
     {
@@ -174,6 +179,7 @@ BOOL WINAPI WinHttpCrackUrl( LPCWSTR url, DWORD len, DWORD flags, LPURL_COMPONEN
 {
     BOOL ret = FALSE;
     WCHAR *p, *q, *r, *url_decoded = NULL, *url_escaped = NULL;
+    INTERNET_SCHEME scheme = 0;
 
     TRACE("%s, %d, %x, %p\n", debugstr_w(url), len, flags, uc);
 
@@ -207,8 +213,8 @@ BOOL WINAPI WinHttpCrackUrl( LPCWSTR url, DWORD len, DWORD flags, LPURL_COMPONEN
         set_last_error( ERROR_WINHTTP_UNRECOGNIZED_SCHEME );
         return FALSE;
     }
-    if (p - url == 4 && !strncmpiW( url, scheme_http, 4 )) uc->nScheme = INTERNET_SCHEME_HTTP;
-    else if (p - url == 5 && !strncmpiW( url, scheme_https, 5 )) uc->nScheme = INTERNET_SCHEME_HTTPS;
+    if (p - url == 4 && !strncmpiW( url, scheme_http, 4 )) scheme = INTERNET_SCHEME_HTTP;
+    else if (p - url == 5 && !strncmpiW( url, scheme_https, 5 )) scheme = INTERNET_SCHEME_HTTPS;
     else
     {
         set_last_error( ERROR_WINHTTP_UNRECOGNIZED_SCHEME );
@@ -252,8 +258,8 @@ BOOL WINAPI WinHttpCrackUrl( LPCWSTR url, DWORD len, DWORD flags, LPURL_COMPONEN
         else
         {
             if (!(set_component( &uc->lpszHostName, &uc->dwHostNameLength, p, q - p, flags ))) goto exit;
-            if (uc->nScheme == INTERNET_SCHEME_HTTP) uc->nPort = INTERNET_DEFAULT_HTTP_PORT;
-            if (uc->nScheme == INTERNET_SCHEME_HTTPS) uc->nPort = INTERNET_DEFAULT_HTTPS_PORT;
+            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) )))
@@ -278,8 +284,8 @@ BOOL WINAPI WinHttpCrackUrl( LPCWSTR url, DWORD len, DWORD flags, LPURL_COMPONEN
         else
         {
             if (!(set_component( &uc->lpszHostName, &uc->dwHostNameLength, p, len - (p - url), flags ))) goto exit;
-            if (uc->nScheme == INTERNET_SCHEME_HTTP) uc->nPort = INTERNET_DEFAULT_HTTP_PORT;
-            if (uc->nScheme == INTERNET_SCHEME_HTTPS) uc->nPort = INTERNET_DEFAULT_HTTPS_PORT;
+            if (scheme == INTERNET_SCHEME_HTTP) uc->nPort = INTERNET_DEFAULT_HTTP_PORT;
+            if (scheme == INTERNET_SCHEME_HTTPS) uc->nPort = INTERNET_DEFAULT_HTTPS_PORT;
         }
         if (!(set_component( &uc->lpszUrlPath, &uc->dwUrlPathLength, (WCHAR *)url + len, 0, flags ))) goto exit;
         if (!(set_component( &uc->lpszExtraInfo, &uc->dwExtraInfoLength, (WCHAR *)url + len, 0, flags ))) goto exit;
@@ -295,6 +301,7 @@ BOOL WINAPI WinHttpCrackUrl( LPCWSTR url, DWORD len, DWORD flags, LPURL_COMPONEN
           debugstr_wn( uc->lpszExtraInfo, uc->dwExtraInfoLength ));
 
 exit:
+    if (ret) uc->nScheme = scheme;
     heap_free( url_decoded );
     heap_free( url_escaped );
     return ret;