[PATCH] winhttp: Implement WinHttpSetOption(WINHTTP_OPTION_CLIENT_CERT_CONTEXT).

[Hans Leidekker]

Signed-off-by: Hans Leidekker 
---
 dlls/winhttp/session.c         | 30 ++++++++++++++++++++++++++++--
 dlls/winhttp/winhttp_private.h |  1 +
 2 files changed, 29 insertions(+), 2 deletions(-)

diff --git a/dlls/winhttp/session.c b/dlls/winhttp/session.c
index 82615ad12f..890894d1c0 100644
--- a/dlls/winhttp/session.c
+++ b/dlls/winhttp/session.c
@@ -611,6 +611,7 @@ static void request_destroy( struct object_header *hdr )
     release_object( &request->connect->hdr );

CertFreeCertificateContext( request->server_cert );
+    CertFreeCertificateContext( request->client_cert );

destroy_authinfo( request->authinfo );
     destroy_authinfo( request->proxy_authinfo );
@@ -1000,14 +1001,39 @@ static BOOL request_set_option( struct object_header *hdr, DWORD option, void *b
         return TRUE;
     }
     case WINHTTP_OPTION_CLIENT_CERT_CONTEXT:
+    {
+        const CERT_CONTEXT *cert;
+
         if (!(hdr->flags & WINHTTP_FLAG_SECURE))
         {
             SetLastError( ERROR_WINHTTP_INCORRECT_HANDLE_STATE );
             return FALSE;
         }
-        FIXME("WINHTTP_OPTION_CLIENT_CERT_CONTEXT\n");
-        return TRUE;
+        if (!buffer)
+        {
+            CertFreeCertificateContext( request->client_cert );
+            request->client_cert = NULL;
+        }
+        else if (buflen >= sizeof(cert))
+        {
+            if (!(cert = CertDuplicateCertificateContext( buffer ))) return FALSE;
+            CertFreeCertificateContext( request->client_cert );
+            request->client_cert = cert;
+        }
+        else
+        {
+            SetLastError( ERROR_INVALID_PARAMETER );
+            return FALSE;
+        }

+        if (request->cred_handle_initialized)
+        {
+            FreeCredentialsHandle( &request->cred_handle );
+            request->cred_handle_initialized = FALSE;
+        }
+
+        return TRUE;
+    }
     case WINHTTP_OPTION_ENABLE_FEATURE:
         if(buflen == sizeof( DWORD ) && *(DWORD *)buffer == WINHTTP_ENABLE_SSL_REVOCATION)
         {
diff --git a/dlls/winhttp/winhttp_private.h b/dlls/winhttp/winhttp_private.h
index b46f7087d8..33b96b97f0 100644
--- a/dlls/winhttp/winhttp_private.h
+++ b/dlls/winhttp/winhttp_private.h
@@ -182,6 +182,7 @@ struct request
     DWORD security_flags;
     BOOL check_revocation;
     const CERT_CONTEXT *server_cert;
+    const CERT_CONTEXT *client_cert;
     int resolve_timeout;
     int connect_timeout;
     int send_timeout;