argument. By this, arguments like (\"-l\" \"%u\") are optional.
\"%t\" is replaced by the temporary file name produced with
`tramp-make-tramp-temp-file'. \"%k\" indicates the keep-date
- parameter of a program, if exists.
+ parameter of a program, if exists. \"%c\" adds additional
+ `tramp-ssh-controlmaster-options' options for the first hop.
* `tramp-async-args'
When an asynchronous process is started, we know already that
the connection works. Therefore, we can pass additional
`localhost' or the name of the local host. Another host name is
useful only in combination with `tramp-default-proxies-alist'.")
-(defun tramp-detect-ssh-controlmaster ()
- "Call ssh to detect whether it supports the ControlMaster argument.
-This function may return nil when the argument is supported, but
-shouldn't return t when it isn't."
- (ignore-errors
- (with-temp-buffer
- (call-process "ssh" nil t nil "-o" "ControlMaster")
- (goto-char (point-min))
- (search-forward-regexp "Missing ControlMaster argument" nil t))))
+;;;###tramp-autoload
+(defconst tramp-ssh-controlmaster-options
+ (let ((result ""))
+ (ignore-errors
+ (with-temp-buffer
+ (call-process "ssh" nil t nil "-o" "ControlMaster")
+ (goto-char (point-min))
+ (when (search-forward-regexp "Missing ControlMaster argument" nil t)
+ (setq result "-o ControlPath=%t.%%r@%%h:%%p -o ControlMaster=auto")))
+ (when result
+ (with-temp-buffer
+ (call-process "ssh" nil t nil "-o" "ControlPersist")
+ (goto-char (point-min))
+ (when (search-forward-regexp "Missing ControlPersist argument" nil t)
+ (setq result (concat result " -o ControlPersist=no"))))))
+ result)
+ "Call ssh to detect whether it supports the Control* arguments.
+Return a string to be used in `tramp-methods'.")
(defcustom tramp-default-method
;; An external copy method seems to be preferred, because it performs
;; permanent password queries. Either a password agent like
;; "ssh-agent" or "Pageant" shall run, or the optional
;; password-cache.el or auth-sources.el packages shall be active for
- ;; password caching. "scpc" is chosen if we detect that the user is
- ;; running OpenSSH 4.0 or newer.
+ ;; password caching. If we detect that the user is running OpenSSH
+ ;; 4.0 or newer, we could reuse the connection, which calls also for
+ ;; an external method.
(cond
;; PuTTY is installed. We don't take it, if it is installed on a
;; non-windows system, or pscp from the pssh (parallel ssh) package
"plink"))
;; There is an ssh installation.
((executable-find "scp")
- (cond
- ((tramp-detect-ssh-controlmaster) "scpc")
- ((or (fboundp 'password-read)
- (fboundp 'auth-source-user-or-password)
- (fboundp 'auth-source-search)
- ;; ssh-agent is running.
- (getenv "SSH_AUTH_SOCK")
- (getenv "SSH_AGENT_PID"))
- "scp")
- (t "ssh")))
+ (if (or (fboundp 'password-read)
+ (fboundp 'auth-source-user-or-password)
+ (fboundp 'auth-source-search)
+ ;; ssh-agent is running.
+ (getenv "SSH_AUTH_SOCK")
+ (getenv "SSH_AGENT_PID")
+ ;; We could reuse the connection.
+ (> (length tramp-ssh-controlmaster-options) 0))
+ "scp"
+ "ssh"))
;; Fallback.
(t "ftp"))
"Default method to use for transferring files.
;;;###tramp-autoload
(defun tramp-tramp-file-p (name)
- "Return t if NAME is a string with Tramp file name syntax.
-It checks also, whether NAME is unibyte encoded."
+ "Return t if NAME is a string with Tramp file name syntax."
(save-match-data
(and (stringp name)
-; (string-equal name (string-as-unibyte name))
(string-match tramp-file-name-regexp name))))
+;; Obsoleted with Tramp 2.2.7.
+(defconst tramp-obsolete-methods
+ '("ssh1" "ssh2" "scp1" "scp2" "scpc" "rsyncc" "plink1")
+ "Obsolete methods.")
+
+(defvar tramp-warned-obsolete-methods nil
+ "Which methods the user has been warned to be obsolete.")
+
(defun tramp-find-method (method user host)
"Return the right method string to use.
This is METHOD, if non-nil. Otherwise, do a lookup in
-`tramp-default-method-alist'."
- (or method
- (let ((choices tramp-default-method-alist)
- lmethod item)
- (while choices
- (setq item (pop choices))
- (when (and (string-match (or (nth 0 item) "") (or host ""))
- (string-match (or (nth 1 item) "") (or user "")))
- (setq lmethod (nth 2 item))
- (setq choices nil)))
- lmethod)
- tramp-default-method))
+`tramp-default-method-alist'. It maps also obsolete methods to
+their replacement."
+ (let ((result
+ (or method
+ (let ((choices tramp-default-method-alist)
+ lmethod item)
+ (while choices
+ (setq item (pop choices))
+ (when (and (string-match (or (nth 0 item) "") (or host ""))
+ (string-match (or (nth 1 item) "") (or user "")))
+ (setq lmethod (nth 2 item))
+ (setq choices nil)))
+ lmethod)
+ tramp-default-method)))
+ ;; This is needed for a transition period only.
+ (when (member result tramp-obsolete-methods)
+ (unless (member result tramp-warned-obsolete-methods)
+ (if noninteractive
+ (warn "Method %s is obsolete, using %s"
+ result (substring result 0 -1))
+ (unless (y-or-n-p (format "Method %s is obsolete, use %s? "
+ result (substring result 0 -1)))
+ (error 'file-error "Method \"%s\" not supported" result)))
+ (add-to-list 'tramp-warned-obsolete-methods result))
+ ;; This works with the current set of `tramp-obsolete-methods'.
+ ;; Must be improved, if their are more sophisticated replacements.
+ (setq result (substring result 0 -1)))
+ result))
(defun tramp-find-user (method user host)
"Return the right user string to use.
(get-buffer-create (tramp-debug-buffer-name vec))
(when (bobp)
(setq buffer-undo-list t)
+ ;; So it does not get loaded while `outline-regexp' is let-bound.
+ (require 'outline)
;; Activate `outline-mode'. This runs `text-mode-hook' and
;; `outline-mode-hook'. We must prevent that local processes
;; die. Yes: I've seen `flyspell-mode', which starts "ispell".
(concat
"^"
(regexp-opt
- '("tramp-compat-funcall"
+ '("tramp-backtrace"
+ "tramp-compat-condition-case-unless-debug"
+ "tramp-compat-funcall"
"tramp-compat-with-temp-message"
+ "tramp-condition-case-unless-debug"
"tramp-debug-message"
"tramp-error"
"tramp-error-with-buffer"
"`M-x tramp-cleanup-this-connection'"))
(sit-for 30))))))
+(defsubst tramp-backtrace (vec-or-proc)
+ "Dump a backtrace into the debug buffer.
+This function is meant for debugging purposes."
+ (tramp-message vec-or-proc 10 "\n%s" (with-output-to-string (backtrace))))
+
(defmacro with-parsed-tramp-file-name (filename var &rest body)
"Parse a Tramp filename and make components available in the body.
res (cdr elt))))
res))))
+(defvar tramp-debug-on-error nil
+ "Like `debug-on-error' but used Tramp internal.")
+
+(defmacro tramp-condition-case-unless-debug
+ (var bodyform &rest handlers)
+ "Like `condition-case-unless-debug' but `tramp-debug-on-error'."
+ `(let ((debug-on-error tramp-debug-on-error))
+ (tramp-compat-condition-case-unless-debug ,var ,bodyform ,@handlers)))
+
;; Main function.
;;;###autoload
(defun tramp-file-name-handler (operation &rest args)
(with-parsed-tramp-file-name filename nil
;; Call the backend function.
(if foreign
- (tramp-compat-condition-case-unless-debug err
+ (tramp-condition-case-unless-debug err
(let ((sf (symbol-function foreign))
result)
;; Some packages set the default directory to a
;; in order to give the user a chance to correct the
;; file name in the minibuffer.
;; In order to get a full backtrace, one could apply
- ;; (setq debug-on-error t debug-on-signal t)
+ ;; (setq tramp-debug-on-error t)
(error
(cond
((and completion (zerop (length localname))
(setq tramp-temp-buffer-file-name local-copy))
;; We must ensure that `file-coding-system-alist'
- ;; matches `local-copy'.
+ ;; matches `local-copy'. We must also use `visit',
+ ;; otherwise there might be an error in the
+ ;; `revert-buffer' function under XEmacs.
(let ((file-coding-system-alist
(tramp-find-file-name-coding-system-alist
filename local-copy)))
(setq result
(insert-file-contents
- local-copy nil nil nil replace)))))
+ local-copy visit nil nil replace)))))
;; Save exit.
(progn