Anton Romanov : secur32: Protect SSLRead/Write with cs on OSX.

[Alexandre Julliard]

Module: wine
Branch: stable
Commit: 6febb8cc97a17027842811d5634aad7204f5c8af
URL:    https://source.winehq.org/git/wine.git/?a=commit;h=6febb8cc97a17027842811d56...

Author: Anton Romanov 
Date:   Fri Sep 15 22:40:03 2017 -0700

secur32: Protect SSLRead/Write with cs on OSX.

Signed-off-by: Anton Romanov 
Signed-off-by: Jacek Caban 
Signed-off-by: Alexandre Julliard 
(cherry picked from commit 1dbf6c8f54c17e50852470caf88febb816aad4fa)
Signed-off-by: Michael Stefaniuc

---

dlls/secur32/schannel_macosx.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/dlls/secur32/schannel_macosx.c b/dlls/secur32/schannel_macosx.c
index fdfa48e..3dd8fda 100644
--- a/dlls/secur32/schannel_macosx.c
+++ b/dlls/secur32/schannel_macosx.c
@@ -146,6 +146,7 @@ enum {
 struct mac_session {
     SSLContextRef context;
     struct schan_transport *transport;
+    CRITICAL_SECTION cs;
 };

@@ -660,6 +661,9 @@ BOOL schan_imp_create_session(schan_imp_session *session, schan_credentials *cre
     if (!s)
         return FALSE;

+    InitializeCriticalSection(&s->cs);
+    s->cs.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": mac_session.cs");
+
     status = SSLNewContext(cred->credential_use == SECPKG_CRED_INBOUND, &s->context);
     if (status != noErr)
     {
@@ -721,6 +725,7 @@ void schan_imp_dispose_session(schan_imp_session session)
     status = SSLDisposeContext(s->context);
     if (status != noErr)
         ERR("Failed to dispose of session context: %d\n", status);
+    DeleteCriticalSection(&s->cs);
     HeapFree(GetProcessHeap(), 0, s);
 }

@@ -946,7 +951,9 @@ SECURITY_STATUS schan_imp_send(schan_imp_session session, const void *buffer,

TRACE("(%p/%p, %p, %p/%lu)\n", s, s->context, buffer, length, *length);

+    EnterCriticalSection(&s->cs);
     status = SSLWrite(s->context, buffer, *length, length);
+    LeaveCriticalSection(&s->cs);
     if (status == noErr)
         TRACE("Wrote %lu bytes\n", *length);
     else if (status == errSSLWouldBlock)
@@ -976,7 +983,9 @@ SECURITY_STATUS schan_imp_recv(schan_imp_session session, void *buffer,

TRACE("(%p/%p, %p, %p/%lu)\n", s, s->context, buffer, length, *length);

+    EnterCriticalSection(&s->cs);
     status = SSLRead(s->context, buffer, *length, length);
+    LeaveCriticalSection(&s->cs);
     if (status == noErr || status == errSSLClosedGraceful)
         TRACE("Read %lu bytes\n", *length);
     else if (status == errSSLWouldBlock)