[PATCH resend] wininet: Set context length for http status 403

[Alistair Leslie-Hughes]

Signed-off-by: Alistair Leslie-Hughes <leslie_alistair(a)hotmail.com>
---
 dlls/wininet/http.c       |  4 +++-
 dlls/wininet/tests/http.c | 37 +++++++++++++++++++++++++++++++++++++
 2 files changed, 40 insertions(+), 1 deletion(-)

diff --git a/dlls/wininet/http.c b/dlls/wininet/http.c
index e9363208471..4bfd93aa3be 100644
--- a/dlls/wininet/http.c
+++ b/dlls/wininet/http.c
@@ -2918,7 +2918,9 @@ static DWORD set_content_length(http_request_t *request)
     WCHAR encoding[20];
     DWORD size;
 
-    if(request->status_code == HTTP_STATUS_NO_CONTENT || !wcscmp(request->verb, L"HEAD")) {
+    if(request->status_code == HTTP_STATUS_NO_CONTENT || request->status_code == HTTP_STATUS_NOT_MODIFIED ||
+       !wcscmp(request->verb, L"HEAD"))
+    {
         request->contentLength = request->netconn_stream.content_length = 0;
         return ERROR_SUCCESS;
     }
diff --git a/dlls/wininet/tests/http.c b/dlls/wininet/tests/http.c
index bf4dce80bef..d32f01be2c5 100644
--- a/dlls/wininet/tests/http.c
+++ b/dlls/wininet/tests/http.c
@@ -2381,6 +2381,11 @@ static DWORD CALLBACK server_thread(LPVOID param)
             static const char nocontentmsg[] = "HTTP/1.1 204 No Content\r\nConnection: close\r\n\r\n";
             send(c, nocontentmsg, sizeof(nocontentmsg)-1, 0);
         }
+        if (strstr(buffer, "GET /test_not_modified"))
+        {
+            static const char notmodifiedmsg[] = "HTTP/1.1 304 Not Modified\r\nConnection: close\r\n\r\n";
+            send(c, notmodifiedmsg, sizeof(notmodifiedmsg)-1, 0);
+        }
         if (strstr(buffer, "GET /test_conn_close"))
         {
             static const char conn_close_response[] = "HTTP/1.1 200 OK\r\nConnection: close\r\n\r\nsome content";
@@ -3487,6 +3492,37 @@ static void test_no_content(int port)
     CHECK_NOTIFIED(INTERNET_STATUS_CONNECTION_CLOSED);
 }
 
+static void test_not_modified(int port)
+{
+    DWORD len;
+    char buf[256];
+    HINTERNET ses, con, req;
+    BOOL ret;
+
+    ses = InternetOpenA("winetest", INTERNET_OPEN_TYPE_DIRECT, NULL, NULL, 0);
+    ok(ses != NULL, "InternetOpen failed\n");
+
+    con = InternetConnectA(ses, "localhost", port, NULL, NULL, INTERNET_SERVICE_HTTP, 0, 0);
+    ok(con != NULL, "InternetConnect failed\n");
+
+    req = HttpOpenRequestA(con, NULL, "/test_not_modified", NULL, NULL, NULL, 0, 0);
+    ok(req != NULL, "HttpOpenRequest failed\n");
+
+    SetLastError(0xdeadbeef);
+    ret = HttpSendRequestW(req, NULL, 0, NULL, 0);
+    ok(ret, "HttpSendRequest failed: %u\n", GetLastError());
+    test_status_code(req, 304);
+
+    len = sizeof(buf)-1;
+    ret = HttpQueryInfoA(req, HTTP_QUERY_CONTENT_LENGTH, buf, &len, 0);
+    ok(!ret, "HttpQueryInfo should have failed\n");
+    ok(GetLastError() == ERROR_HTTP_HEADER_NOT_FOUND , "got %u\n", GetLastError());
+
+    InternetCloseHandle(req);
+    InternetCloseHandle(con);
+    InternetCloseHandle(ses);
+}
+
 static void test_conn_close(int port)
 {
     HINTERNET session, connection, req;
@@ -6060,6 +6096,7 @@ static void test_http_connection(void)
     test_HttpSendRequestW(si.port);
     test_options(si.port);
     test_no_content(si.port);
+    test_not_modified(si.port);
     test_conn_close(si.port);
     test_no_cache(si.port);
     test_cache_read_gzipped(si.port);
-- 
2.33.0

[Hans Leidekker]

On Mon, 2021-09-27 at 22:48 +1000, Alistair Leslie-Hughes wrote:

'Reset context length for http status 304' would be a better subject.
> diff --git a/dlls/wininet/http.c b/dlls/wininet/http.c
> index e9363208471..4bfd93aa3be 100644
> --- a/dlls/wininet/http.c
> +++ b/dlls/wininet/http.c
> @@ -2918,7 +2918,9 @@ static DWORD set_content_length(http_request_t *request)
>      WCHAR encoding[20];
>      DWORD size;
>
> -    if(request->status_code == HTTP_STATUS_NO_CONTENT || !wcscmp(request->verb, L"HEAD")) {
> +    if(request->status_code == HTTP_STATUS_NO_CONTENT || request->status_code == HTTP_STATUS_NOT_MODIFIED ||
> +       !wcscmp(request->verb, L"HEAD"))
> +    {
>          request->contentLength = request->netconn_stream.content_length = 0;
>          return ERROR_SUCCESS;
>      }
> diff --git a/dlls/wininet/tests/http.c b/dlls/wininet/tests/http.c
> index bf4dce80bef..d32f01be2c5 100644
> --- a/dlls/wininet/tests/http.c
> +++ b/dlls/wininet/tests/http.c
> @@ -2381,6 +2381,11 @@ static DWORD CALLBACK server_thread(LPVOID param)
>              static const char nocontentmsg[] = "HTTP/1.1 204 No Content\r\nConnection: close\r\n\r\n";
>              send(c, nocontentmsg, sizeof(nocontentmsg)-1, 0);
>          }
> +        if (strstr(buffer, "GET /test_not_modified"))
> +        {
> +            static const char notmodifiedmsg[] = "HTTP/1.1 304 Not Modified\r\nConnection: close\r\n\r\n";
> +            send(c, notmodifiedmsg, sizeof(notmodifiedmsg)-1, 0);
> +        }

This test also succeeds without resetting content length. To show that
the patch is correct you should add a non-zero content length header
and call InternetQueryDataAvailable.