Patch from Stefan Metzmacher <metze@metzemix.de> to fix signing problems

when reverse connecting back to a client for printer notify.
Jeremy.
(This used to be commit 06aa434c3fdb139e3f3143d19413556945cbcd4f)

4 files changed, 21 insertions, 5 deletions

diff --git a/source3/lib/util_sock.c b/source3/lib/util_sock.c
index b8b8471708..5a1f631ba4 100644
--- a/source3/lib/util_sock.c
+++ b/source3/lib/util_sock.c
@@ -497,9 +497,10 @@ ssize_t read_smb_length(int fd,char *inbuf,unsigned int timeout)
  BUFFER_SIZE+SAFETY_MARGIN.
  The timeout is in milliseconds. 
  This function will return on receipt of a session keepalive packet.
+ Doesn't check the MAC on signed packets.
 ****************************************************************************/
 
-BOOL receive_smb(int fd,char *buffer, unsigned int timeout)
+BOOL receive_smb_raw(int fd,char *buffer, unsigned int timeout)
 {
 	ssize_t len,ret;
 
@@ -509,7 +510,7 @@ BOOL receive_smb(int fd,char *buffer, unsigned int timeout)
 
 	len = read_smb_length_return_keepalive(fd,buffer,timeout);
 	if (len < 0) {
-		DEBUG(10,("receive_smb: length < 0!\n"));
+		DEBUG(10,("receive_smb_raw: length < 0!\n"));
 
 		/*
 		 * Correct fix. smb_read_error may have already been
@@ -552,6 +553,20 @@ BOOL receive_smb(int fd,char *buffer, unsigned int timeout)
 		}
 	}
 
+	return True;
+}
+
+/****************************************************************************
+ Wrapper for receive_smb_raw().
+ Checks the MAC on signed packets.
+****************************************************************************/
+
+BOOL receive_smb(int fd,char *buffer, unsigned int timeout)
+{
+	if (!receive_smb_raw(fd, buffer, timeout)) {
+		return False;
+	}
+
 	/* Check the incoming SMB signature. */
 	if (!srv_check_sign_mac(buffer)) {
 		DEBUG(0, ("receive_smb: SMB Signature verification failed on incoming packet!\n"));
diff --git a/source3/libsmb/clientgen.c b/source3/libsmb/clientgen.c
index 0a134f715d..9b54acf775 100644
--- a/source3/libsmb/clientgen.c
+++ b/source3/libsmb/clientgen.c
@@ -59,7 +59,7 @@ static BOOL client_receive_smb(int fd,char *buffer, unsigned int timeout)
 	BOOL ret;
 
 	for(;;) {
-		ret = receive_smb(fd, buffer, timeout);
+		ret = receive_smb_raw(fd, buffer, timeout);
 
 		if (!ret) {
 			DEBUG(10,("client_receive_smb failed\n"));
diff --git a/source3/rpc_server/srv_spoolss_nt.c b/source3/rpc_server/srv_spoolss_nt.c
index f2fb02176b..15578f6148 100644
--- a/source3/rpc_server/srv_spoolss_nt.c
+++ b/source3/rpc_server/srv_spoolss_nt.c
@@ -2598,7 +2598,8 @@ static BOOL spoolss_connect_to_client(struct cli_state *the_cli,
 	}
 
 	the_cli->protocol = PROTOCOL_NT1;
-    
+	cli_setup_signing_state(the_cli, lp_client_signing());
+  
 	if (!cli_negprot(the_cli)) {
 		DEBUG(0,("spoolss_connect_to_client: machine %s rejected the negotiate protocol. Error was : %s.\n", remote_machine, cli_errstr(the_cli) ));
 		cli_shutdown(the_cli);
diff --git a/source3/smbd/blocking.c b/source3/smbd/blocking.c
index f43790bfe0..c0512d5539 100644
--- a/source3/smbd/blocking.c
+++ b/source3/smbd/blocking.c
@@ -149,7 +149,7 @@ for fnum = %d, name = %s\n", length, (int)blr->expire_time, lock_timeout,
 		blr->fsp->fnum, blr->fsp->fsp_name ));
 
 	/* Push the MID of this packet on the signing queue. */
-	srv_defer_sign_response(SVAL(inbuf,smb_mid), True);
+	srv_defer_sign_response(SVAL(inbuf,smb_mid));
 
 	return True;
 }