Jacek Caban : server: Return error for FSCTL_PIPE_PEEK calls on disconnected pipes.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 688c7a99d2ce9dd60d39efb60138bdebb4fceace
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=688c7a99d2ce9dd60d39efb60138bdebb4fceace

Author: Jacek Caban <jacek at codeweavers.com>
Date:   Wed Oct  4 15:17:35 2017 +0200

server: Return error for FSCTL_PIPE_PEEK calls on disconnected pipes.

Signed-off-by: Jacek Caban <jacek at codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard at winehq.org>

---

 dlls/kernel32/tests/pipe.c | 37 +++++++++++++++++++++++++++++++++++++
 server/named_pipe.c        |  6 ++++++
 2 files changed, 43 insertions(+)

diff --git a/dlls/kernel32/tests/pipe.c b/dlls/kernel32/tests/pipe.c
index 84db14e..18ffa7a 100644
--- a/dlls/kernel32/tests/pipe.c
+++ b/dlls/kernel32/tests/pipe.c
@@ -209,6 +209,11 @@ static void test_CreateNamedPipe(int pipemode)
     ok(hnp != INVALID_HANDLE_VALUE, "CreateNamedPipe failed\n");
     test_signaled(hnp);
 
+    ret = PeekNamedPipe(hnp, NULL, 0, NULL, &readden, NULL);
+    todo_wine
+    ok(!ret && GetLastError() == ERROR_BAD_PIPE, "PeekNamedPipe returned %x (%u)\n",
+       ret, GetLastError());
+
     ret = WaitNamedPipeA(PIPENAME, 2000);
     ok(ret, "WaitNamedPipe failed (%d)\n", GetLastError());
 
@@ -1387,10 +1392,20 @@ static int test_DisconnectNamedPipe(void)
         ok(ReadFile(hnp, ibuf, sizeof(ibuf), &readden, NULL) == 0
             && GetLastError() == ERROR_PIPE_NOT_CONNECTED,
             "ReadFile from disconnected pipe with bytes waiting\n");
+
         ok(!DisconnectNamedPipe(hnp) && GetLastError() == ERROR_PIPE_NOT_CONNECTED,
            "DisconnectNamedPipe worked twice\n");
         ret = WaitForSingleObject(hFile, 0);
         ok(ret == WAIT_TIMEOUT, "WaitForSingleObject returned %X\n", ret);
+
+        ret = PeekNamedPipe(hFile, NULL, 0, NULL, &readden, NULL);
+        todo_wine
+        ok(!ret && GetLastError() == ERROR_PIPE_NOT_CONNECTED, "PeekNamedPipe returned %x (%u)\n",
+           ret, GetLastError());
+        ret = PeekNamedPipe(hnp, NULL, 0, NULL, &readden, NULL);
+        todo_wine
+        ok(!ret && GetLastError() == ERROR_BAD_PIPE, "PeekNamedPipe returned %x (%u)\n",
+           ret, GetLastError());
         ok(CloseHandle(hFile), "CloseHandle\n");
     }
 
@@ -1502,6 +1517,11 @@ static void test_CloseHandle(void)
     ok(numbytes == 0, "expected 0, got %u\n", numbytes);
 
     numbytes = 0xdeadbeef;
+    ret = PeekNamedPipe(hfile, NULL, 0, NULL, &numbytes, NULL);
+    ok(ret, "PeekNamedPipe failed with %u\n", GetLastError());
+    ok(numbytes == sizeof(testdata), "expected sizeof(testdata), got %u\n", numbytes);
+
+    numbytes = 0xdeadbeef;
     memset(buffer, 0, sizeof(buffer));
     ret = ReadFile(hfile, buffer, sizeof(buffer), &numbytes, NULL);
     ok(ret, "ReadFile failed with %u\n", GetLastError());
@@ -1518,6 +1538,12 @@ static void test_CloseHandle(void)
     ok(!ret, "ReadFile unexpectedly succeeded\n");
     ok(GetLastError() == ERROR_BROKEN_PIPE, "expected ERROR_BROKEN_PIPE, got %u\n", GetLastError());
 
+    numbytes = 0xdeadbeef;
+    ret = PeekNamedPipe(hfile, NULL, 0, NULL, &numbytes, NULL);
+    ok(!ret && GetLastError() == ERROR_BROKEN_PIPE, "PeekNamedPipe returned %x (%u)\n",
+       ret, GetLastError());
+    ok(numbytes == 0xdeadbeef, "numbytes = %u\n", numbytes);
+
     SetLastError(0xdeadbeef);
     ret = WriteFile(hfile, testdata, sizeof(testdata), &numbytes, NULL);
     ok(!ret, "WriteFile unexpectedly succeeded\n");
@@ -1601,6 +1627,11 @@ static void test_CloseHandle(void)
     ok(numbytes == 0, "expected 0, got %u\n", numbytes);
 
     numbytes = 0xdeadbeef;
+    ret = PeekNamedPipe(hpipe, NULL, 0, NULL, &numbytes, NULL);
+    ok(ret, "PeekNamedPipe failed with %u\n", GetLastError());
+    ok(numbytes == sizeof(testdata), "expected sizeof(testdata), got %u\n", numbytes);
+
+    numbytes = 0xdeadbeef;
     memset(buffer, 0, sizeof(buffer));
     ret = ReadFile(hpipe, buffer, sizeof(buffer), &numbytes, NULL);
     ok(ret, "ReadFile failed with %u\n", GetLastError());
@@ -1617,6 +1648,12 @@ static void test_CloseHandle(void)
     ok(!ret, "ReadFile unexpectedly succeeded\n");
     ok(GetLastError() == ERROR_BROKEN_PIPE, "expected ERROR_BROKEN_PIPE, got %u\n", GetLastError());
 
+    numbytes = 0xdeadbeef;
+    ret = PeekNamedPipe(hpipe, NULL, 0, NULL, &numbytes, NULL);
+    ok(!ret && GetLastError() == ERROR_BROKEN_PIPE, "PeekNamedPipe returned %x (%u)\n",
+       ret, GetLastError());
+    ok(numbytes == 0xdeadbeef, "numbytes = %u\n", numbytes);
+
     SetLastError(0xdeadbeef);
     ret = WriteFile(hpipe, testdata, sizeof(testdata), &numbytes, NULL);
     ok(!ret, "WriteFile unexpectedly succeeded\n");
diff --git a/server/named_pipe.c b/server/named_pipe.c
index d0ec38f..1ec1ff4 100644
--- a/server/named_pipe.c
+++ b/server/named_pipe.c
@@ -922,6 +922,12 @@ static int pipe_end_peek( struct pipe_end *pipe_end )
     }
     reply_size -= offsetof( FILE_PIPE_PEEK_BUFFER, Data );
 
+    if (!pipe_end->connection && list_empty( &pipe_end->message_queue ))
+    {
+        set_error( STATUS_PIPE_BROKEN );
+        return 0;
+    }
+
     LIST_FOR_EACH_ENTRY( message, &pipe_end->message_queue, struct pipe_message, entry )
         avail += message->iosb->in_size - message->read_pos;