* net/tramp-gw.el (tramp-gw-open-connection): Suppress traces in

wrong debug buffer.
(tramp-gw-open-connection): Set process coding system 'binary.
(tramp-gw-open-network-stream): Handle HTTP error 403.

* net/tramp-sh.el (tramp-compute-multi-hops): Suppress traces in
wrong debug buffer.
(tramp-maybe-open-connection): Set connection property "gateway".

* net/tramp.el (tramp-error-with-buffer): Call `message' properly.
(tramp-accept-process-output): Use nil as argument for
`accept-process-output', when there is a gateway prepended.

lisp/ChangeLog

+2014-12-17  Michael Albinus  <michael.albinus@gmx.de>
+
+	* net/tramp.el (tramp-error-with-buffer): Call `message' properly.
+	(tramp-accept-process-output): Use nil as argument for
+	`accept-process-output', when there is a gateway prepended.
+
+	* net/tramp-gw.el (tramp-gw-open-connection): Suppress traces in
+	wrong debug buffer.
+	(tramp-gw-open-connection): Set process coding system 'binary.
+	(tramp-gw-open-network-stream): Handle HTTP error 403.
+
+	* net/tramp-sh.el (tramp-compute-multi-hops): Suppress traces in
+	wrong debug buffer.
+	(tramp-maybe-open-connection): Set connection property "gateway".
+
 2014-12-15  Stefan Monnier  <monnier@iro.umontreal.ca>
 
 	* subr.el (sit-for): Tweak docstring (bug#19381).

lisp/net/tramp-gw.el

@@ -195,11 +195,12 @@ instead of the host name declared in TARGET-VEC."
     (setq tramp-gw-gw-proc
 	  (funcall
 	   socks-function
-	   (tramp-get-connection-name gw-vec)
-	   (tramp-get-connection-buffer gw-vec)
+	   (let ((tramp-verbose 0)) (tramp-get-connection-name gw-vec))
+	   (let ((tramp-verbose 0)) (tramp-get-connection-buffer gw-vec))
 	   (tramp-file-name-real-host target-vec)
 	   (tramp-file-name-port target-vec)))
     (set-process-sentinel tramp-gw-gw-proc 'tramp-gw-gw-proc-sentinel)
+    (set-process-coding-system tramp-gw-gw-proc 'binary 'binary)
     (tramp-compat-set-process-query-on-exit-flag tramp-gw-gw-proc nil)
     (tramp-message
      vec 4 "Opened %s process `%s'"
@@ -260,6 +261,10 @@ authentication is requested from proxy server, provide it."
 	  (200 (setq found t))
 	  ;; We need basic authentication.
 	  (401 (setq authentication (tramp-gw-basic-authentication nil first)))
+	  ;; Access forbidden.
+	  (403 (tramp-error-with-buffer
+		(current-buffer) tramp-gw-vector 'file-error
+		"Connection to %s:%d forbidden." host service))
 	  ;; Target host not found.
 	  (404 (tramp-error-with-buffer
 		(current-buffer) tramp-gw-vector 'file-error

lisp/net/tramp-sh.el

@@ -4470,7 +4470,8 @@ Gateway hops are already opened."
 	;; Therefore, we must remember the gateway vector.  But we
 	;; cannot do it as connection property, because it shouldn't
 	;; be persistent.  And we have no started process yet either.
-	(tramp-set-file-property (car target-alist) "" "gateway" hop)))
+	(let ((tramp-verbose 0))
+	  (tramp-set-file-property (car target-alist) "" "gateway" hop))))
 
     ;; Foreign and out-of-band methods are not supported for multi-hops.
     (when (cdr target-alist)
@@ -4646,7 +4647,8 @@ connection if a previous connection has died for some reason."
 			   l-method 'tramp-connection-timeout))
 			 (gw-args
 			  (tramp-get-method-parameter l-method 'tramp-gw-args))
-			 (gw (tramp-get-file-property hop "" "gateway" nil))
+			 (gw (let ((tramp-verbose 0))
+			       (tramp-get-file-property hop "" "gateway" nil)))
 			 (g-method (and gw (tramp-file-name-method gw)))
 			 (g-user (and gw (tramp-file-name-user gw)))
 			 (g-host (and gw (tramp-file-name-real-host gw)))
@@ -4674,8 +4676,10 @@ connection if a previous connection has died for some reason."
 		      (setq login-args (append async-args login-args)))
 
 		    ;; Add gateway arguments if necessary.
-		    (when (and gw gw-args)
-		      (setq login-args (append gw-args login-args)))
+		    (when gw
+		      (tramp-set-connection-property p "gateway" t)
+		      (when gw-args
+			(setq login-args (append gw-args login-args))))
 
 		    ;; Check for port number.  Until now, there's no
 		    ;; need for handling like method, user, host.

lisp/net/tramp.el

@@ -1610,7 +1610,7 @@ an input event arrives.  The other arguments are passed to `tramp-error'."
 	  (let ((enable-recursive-minibuffers t))
 	    ;; `tramp-error' does not show messages.  So we must do it
 	    ;; ourselves.
-	    (message fmt-string arguments)
+	    (apply 'message fmt-string arguments)
 	    ;; Show buffer.
 	    (pop-to-buffer buf)
 	    (discard-input)
@@ -3609,15 +3609,19 @@ connection buffer."
 This is needed in order to hide `last-coding-system-used', which is set
 for process communication also."
   (with-current-buffer (process-buffer proc)
-    (tramp-message proc 10 "%s %s" proc (process-status proc))
-    (let (buffer-read-only last-coding-system-used)
+    ;; FIXME: If there is a gateway process, we need communication
+    ;; between several processes.  Too complicate to implement, so we
+    ;; read output from all proceeses.
+    (let ((p (if (tramp-get-connection-property proc "gateway" nil) nil proc))
+	  buffer-read-only last-coding-system-used)
       ;; Under Windows XP, accept-process-output doesn't return
       ;; sometimes.  So we add an additional timeout.
       (with-timeout ((or timeout 1))
 	(if (featurep 'xemacs)
-	    (accept-process-output proc timeout timeout-msecs)
-	  (accept-process-output proc timeout timeout-msecs (and proc t)))))
-    (tramp-message proc 10 "\n%s" (buffer-string))))
+	    (accept-process-output p timeout timeout-msecs)
+	  (accept-process-output p timeout timeout-msecs (and proc t))))
+      (tramp-message proc 10 "%s %s %s\n%s"
+		     proc (process-status proc) p (buffer-string)))))
 
 (defun tramp-check-for-regexp (proc regexp)
   "Check, whether REGEXP is contained in process buffer of PROC.