winhttp: Raw request headers need to be terminated with double \r\n.

[Sebastian Lackner]

From: Michael Müller <michael at fds-team.de>

build_request_string() already appends a double CRLF, but it is missing in read_reply().

For https://bugs.winehq.org/show_bug.cgi?id=35953.

---
 dlls/winhttp/request.c       |   14 ++++++++------
 dlls/winhttp/tests/winhttp.c |   18 ++++++++++++++++++
 2 files changed, 26 insertions(+), 6 deletions(-)

diff --git a/dlls/winhttp/request.c b/dlls/winhttp/request.c
index 607b502..498df2b 100644
--- a/dlls/winhttp/request.c
+++ b/dlls/winhttp/request.c
@@ -672,11 +672,8 @@ static BOOL query_headers( request_t *request, DWORD level, LPCWSTR name, LPVOID
         if (!(p = headers)) return FALSE;
         for (len = 0; *p; p++) if (*p != '\r') len++;
 
-        if (!buffer || (len + 1) * sizeof(WCHAR) > *buflen)
-        {
-            len++;
+        if (!buffer || len * sizeof(WCHAR) > *buflen)
             set_last_error( ERROR_INSUFFICIENT_BUFFER );
-        }
         else
         {
             for (p = headers, q = buffer; *p; p++, q++)
@@ -688,8 +685,8 @@ static BOOL query_headers( request_t *request, DWORD level, LPCWSTR name, LPVOID
                     p++; /* skip '\n' */
                 }
             }
-            *q = 0;
             TRACE("returning data: %s\n", debugstr_wn(buffer, len));
+            if (len) len--;
             ret = TRUE;
         }
         *buflen = len * sizeof(WCHAR);
@@ -2155,7 +2152,7 @@ static BOOL read_reply( request_t *request )
 
         buflen = MAX_REPLY_LEN;
         if (!read_line( request, buffer, &buflen )) return TRUE;
-        if (!*buffer) break;
+        if (!*buffer) buflen = 1;
 
         while (len - offset < buflen + crlf_len)
         {
@@ -2164,6 +2161,11 @@ static BOOL read_reply( request_t *request )
             if (!(tmp = heap_realloc( raw_headers, len * sizeof(WCHAR) ))) return FALSE;
             request->raw_headers = raw_headers = tmp;
         }
+        if (!*buffer)
+        {
+            memcpy( raw_headers + offset, crlf, sizeof(crlf) );
+            break;
+        }
         MultiByteToWideChar( CP_ACP, 0, buffer, buflen, raw_headers + offset, buflen );
 
         if (!(header = parse_header( raw_headers + offset ))) break;
diff --git a/dlls/winhttp/tests/winhttp.c b/dlls/winhttp/tests/winhttp.c
index cb462bb..d2f7671 100644
--- a/dlls/winhttp/tests/winhttp.c
+++ b/dlls/winhttp/tests/winhttp.c
@@ -2126,8 +2126,11 @@ static DWORD CALLBACK server_thread(LPVOID param)
 
 static void test_basic_request(int port, const WCHAR *verb, const WCHAR *path)
 {
+    static const WCHAR test_header_end_clrf[] = {'\r','\n','\r','\n',0};
+    static const WCHAR test_header_end_raw[] = {0,0};
     HINTERNET ses, con, req;
     char buffer[0x100];
+    WCHAR buffer2[0x100];
     DWORD count, status, size, error, supported, first, target;
     BOOL ret;
 
@@ -2162,6 +2165,21 @@ static void test_basic_request(int port, const WCHAR *verb, const WCHAR *path)
     ok(first == 0xdeadbeef, "got %x\n", first);
     ok(target == 0xdeadbeef, "got %x\n", target);
 
+    size = sizeof(buffer2);
+    memset(buffer2, 0, sizeof(buffer2));
+    ret = WinHttpQueryHeaders(req, WINHTTP_QUERY_RAW_HEADERS_CRLF, NULL, buffer2, &size, NULL);
+    ok(ret, "failed to query for raw headers: %u\n", GetLastError());
+    ok(!memcmp(buffer2 + lstrlenW(buffer2) - 4, test_header_end_clrf, sizeof(test_header_end_clrf)),
+       "WinHttpQueryHeaders returned invalid end of header string\n");
+
+    size = sizeof(buffer2);
+    memset(buffer2, 0, sizeof(buffer2));
+    ret = WinHttpQueryHeaders(req, WINHTTP_QUERY_RAW_HEADERS, NULL, buffer2, &size, NULL);
+    ok(ret, "failed to query for raw headers: %u\n", GetLastError());
+    ok(!memcmp(buffer2 + (size / sizeof(WCHAR)) - 1, test_header_end_raw, sizeof(test_header_end_raw)),
+       "WinHttpQueryHeaders returned invalid end of header string\n");
+    ok(buffer2[(size / sizeof(WCHAR)) - 2] != 0, "returned string has too many NULL characters\n");
+
     count = 0;
     memset(buffer, 0, sizeof(buffer));
     ret = WinHttpReadData(req, buffer, sizeof buffer, &count);
-- 
2.5.0