--- /dev/null
- ;; 2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
+;;; tramp-sh.el --- Tramp access functions for (s)sh-like connections
+
+;; Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004,
- # Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
++;; 2005, 2006, 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
+
+;; (copyright statements below in code to be updated with the above notice)
+
+;; Author: Kai Großjohann <kai.grossjohann@gmx.net>
+;; Michael Albinus <michael.albinus@gmx.de>
+;; Keywords: comm, processes
+;; Package: tramp
+
+;; This file is part of GNU Emacs.
+
+;; GNU Emacs is free software: you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+
+;; GNU Emacs is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+;; GNU General Public License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
+
+;;; Code:
+
+(eval-when-compile (require 'cl)) ; ignore-errors
+(require 'tramp)
+(require 'shell)
+
+;; Pacify byte-compiler. The function is needed on XEmacs only. I'm
+;; not sure at all that this is the right way to do it, but let's hope
+;; it works for now, and wait for a guru to point out the Right Way to
+;; achieve this.
+;;(eval-when-compile
+;; (unless (fboundp 'dired-insert-set-properties)
+;; (fset 'dired-insert-set-properties 'ignore)))
+;; Gerd suggests this:
+(eval-when-compile (require 'dired))
+;; Note that dired is required at run-time, too, when it is needed.
+;; It is only needed on XEmacs for the function
+;; `dired-insert-set-properties'.
+
+(defcustom tramp-inline-compress-start-size 4096
+ "*The minimum size of compressing where inline transfer.
+When inline transfer, compress transfered data of file
+whose size is this value or above (up to `tramp-copy-size-limit').
+If it is nil, no compression at all will be applied."
+ :group 'tramp
+ :type '(choice (const nil) integer))
+
+(defcustom tramp-copy-size-limit 10240
+ "*The maximum file size where inline copying is preferred over an out-of-the-band copy.
+If it is nil, inline out-of-the-band copy will be used without a check."
+ :group 'tramp
+ :type '(choice (const nil) integer))
+
+;;;###tramp-autoload
+(defcustom tramp-terminal-type "dumb"
+ "*Value of TERM environment variable for logging in to remote host.
+Because Tramp wants to parse the output of the remote shell, it is easily
+confused by ANSI color escape sequences and suchlike. Often, shell init
+files conditionalize this setup based on the TERM environment variable."
+ :group 'tramp
+ :type 'string)
+
+;; ksh on OpenBSD 4.5 requires, that $PS1 contains a `#' character for
+;; root users. It uses the `$' character for other users. In order
+;; to guarantee a proper prompt, we use "#$" for the prompt.
+
+(defvar tramp-end-of-output
+ (format
+ "///%s#$"
+ (md5 (concat (prin1-to-string process-environment) (current-time-string))))
+ "String used to recognize end of output.
+The '$' character at the end is quoted; the string cannot be
+detected as prompt when being sent on echoing hosts, therefore.")
+
+;;;###tramp-autoload
+(defconst tramp-initial-end-of-output "#$ "
+ "Prompt when establishing a connection.")
+
+;; Initialize `tramp-methods' with the supported methods.
+;;;###tramp-autoload
+(add-to-list 'tramp-methods
+ '("rcp"
+ (tramp-login-program "rsh")
+ (tramp-login-args (("%h") ("-l" "%u")))
+ (tramp-remote-sh "/bin/sh")
+ (tramp-copy-program "rcp")
+ (tramp-copy-args (("%k" "-p") ("-r")))
+ (tramp-copy-keep-date t)
+ (tramp-copy-recursive t)))
+;;;###tramp-autoload
+(add-to-list 'tramp-methods
+ '("remcp"
+ (tramp-login-program "remsh")
+ (tramp-login-args (("%h") ("-l" "%u")))
+ (tramp-remote-sh "/bin/sh")
+ (tramp-copy-program "rcp")
+ (tramp-copy-args (("%k" "-p")))
+ (tramp-copy-keep-date t)))
+;;;###tramp-autoload
+(add-to-list 'tramp-methods
+ '("scp"
+ (tramp-login-program "ssh")
+ (tramp-login-args (("-l" "%u") ("-p" "%p") ("-e" "none") ("%h")))
+ (tramp-async-args (("-q")))
+ (tramp-remote-sh "/bin/sh")
+ (tramp-copy-program "scp")
+ (tramp-copy-args (("-P" "%p") ("%k" "-p") ("-q") ("-r")))
+ (tramp-copy-keep-date t)
+ (tramp-copy-recursive t)
+ (tramp-gw-args (("-o" "GlobalKnownHostsFile=/dev/null")
+ ("-o" "UserKnownHostsFile=/dev/null")
+ ("-o" "StrictHostKeyChecking=no")))
+ (tramp-default-port 22)))
+;;;###tramp-autoload
+(add-to-list 'tramp-methods
+ '("scp1"
+ (tramp-login-program "ssh")
+ (tramp-login-args (("-l" "%u") ("-p" "%p")
+ ("-1") ("-e" "none") ("%h")))
+ (tramp-async-args (("-q")))
+ (tramp-remote-sh "/bin/sh")
+ (tramp-copy-program "scp")
+ (tramp-copy-args (("-1") ("-P" "%p") ("%k" "-p") ("-q") ("-r")))
+ (tramp-copy-keep-date t)
+ (tramp-copy-recursive t)
+ (tramp-gw-args (("-o" "GlobalKnownHostsFile=/dev/null")
+ ("-o" "UserKnownHostsFile=/dev/null")
+ ("-o" "StrictHostKeyChecking=no")))
+ (tramp-default-port 22)))
+;;;###tramp-autoload
+(add-to-list 'tramp-methods
+ '("scp2"
+ (tramp-login-program "ssh")
+ (tramp-login-args (("-l" "%u") ("-p" "%p")
+ ("-2") ("-e" "none") ("%h")))
+ (tramp-async-args (("-q")))
+ (tramp-remote-sh "/bin/sh")
+ (tramp-copy-program "scp")
+ (tramp-copy-args (("-2") ("-P" "%p") ("%k" "-p") ("-q") ("-r")))
+ (tramp-copy-keep-date t)
+ (tramp-copy-recursive t)
+ (tramp-gw-args (("-o" "GlobalKnownHostsFile=/dev/null")
+ ("-o" "UserKnownHostsFile=/dev/null")
+ ("-o" "StrictHostKeyChecking=no")))
+ (tramp-default-port 22)))
+;;;###tramp-autoload
+(add-to-list 'tramp-methods
+ '("scpc"
+ (tramp-login-program "ssh")
+ (tramp-login-args (("-l" "%u") ("-p" "%p")
+ ("-o" "ControlPath=%t.%%r@%%h:%%p")
+ ("-o" "ControlMaster=yes")
+ ("-e" "none") ("%h")))
+ (tramp-async-args (("-q")))
+ (tramp-remote-sh "/bin/sh")
+ (tramp-copy-program "scp")
+ (tramp-copy-args (("-P" "%p") ("%k" "-p") ("-q") ("-r")
+ ("-o" "ControlPath=%t.%%r@%%h:%%p")
+ ("-o" "ControlMaster=auto")))
+ (tramp-copy-keep-date t)
+ (tramp-copy-recursive t)
+ (tramp-gw-args (("-o" "GlobalKnownHostsFile=/dev/null")
+ ("-o" "UserKnownHostsFile=/dev/null")
+ ("-o" "StrictHostKeyChecking=no")))
+ (tramp-default-port 22)))
+;;;###tramp-autoload
+(add-to-list 'tramp-methods
+ '("scpx"
+ (tramp-login-program "ssh")
+ (tramp-login-args (("-l" "%u") ("-p" "%p")
+ ("-e" "none") ("-t" "-t")
+ ("%h") ("/bin/sh")))
+ (tramp-async-args (("-q")))
+ (tramp-remote-sh "/bin/sh")
+ (tramp-copy-program "scp")
+ (tramp-copy-args (("-P" "%p") ("%k" "-p") ("-q") ("-r")))
+ (tramp-copy-keep-date t)
+ (tramp-copy-recursive t)
+ (tramp-gw-args (("-o" "GlobalKnownHostsFile=/dev/null")
+ ("-o" "UserKnownHostsFile=/dev/null")
+ ("-o" "StrictHostKeyChecking=no")))
+ (tramp-default-port 22)))
+;;;###tramp-autoload
+(add-to-list 'tramp-methods
+ '("sftp"
+ (tramp-login-program "ssh")
+ (tramp-login-args (("-l" "%u") ("-p" "%p") ("-e" "none") ("%h")))
+ (tramp-async-args (("-q")))
+ (tramp-remote-sh "/bin/sh")
+ (tramp-copy-program "sftp")))
+;;;###tramp-autoload
+(add-to-list 'tramp-methods
+ '("rsync"
+ (tramp-login-program "ssh")
+ (tramp-login-args (("-l" "%u") ("-p" "%p") ("-e" "none") ("%h")))
+ (tramp-async-args (("-q")))
+ (tramp-remote-sh "/bin/sh")
+ (tramp-copy-program "rsync")
+ (tramp-copy-args (("-e" "ssh") ("%k" "-t") ("-r")))
+ (tramp-copy-keep-date t)
+ (tramp-copy-keep-tmpfile t)
+ (tramp-copy-recursive t)))
+;;;###tramp-autoload
+(add-to-list 'tramp-methods
+ `("rsyncc"
+ (tramp-login-program "ssh")
+ (tramp-login-args (("-l" "%u") ("-p" "%p")
+ ("-o" "ControlPath=%t.%%r@%%h:%%p")
+ ("-o" "ControlMaster=yes")
+ ("-e" "none") ("%h")))
+ (tramp-async-args (("-q")))
+ (tramp-remote-sh "/bin/sh")
+ (tramp-copy-program "rsync")
+ (tramp-copy-args (("%k" "-t") ("-r")))
+ (tramp-copy-env (("RSYNC_RSH")
+ (,(concat
+ "ssh"
+ " -o ControlPath=%t.%%r@%%h:%%p"
+ " -o ControlMaster=auto"))))
+ (tramp-copy-keep-date t)
+ (tramp-copy-keep-tmpfile t)
+ (tramp-copy-recursive t)))
+;;;###tramp-autoload
+(add-to-list 'tramp-methods
+ '("rsh"
+ (tramp-login-program "rsh")
+ (tramp-login-args (("%h") ("-l" "%u")))
+ (tramp-remote-sh "/bin/sh")))
+;;;###tramp-autoload
+(add-to-list 'tramp-methods
+ '("remsh"
+ (tramp-login-program "remsh")
+ (tramp-login-args (("%h") ("-l" "%u")))
+ (tramp-remote-sh "/bin/sh")))
+;;;###tramp-autoload
+(add-to-list 'tramp-methods
+ '("ssh"
+ (tramp-login-program "ssh")
+ (tramp-login-args (("-l" "%u") ("-p" "%p") ("-e" "none") ("%h")))
+ (tramp-async-args (("-q")))
+ (tramp-remote-sh "/bin/sh")
+ (tramp-gw-args (("-o" "GlobalKnownHostsFile=/dev/null")
+ ("-o" "UserKnownHostsFile=/dev/null")
+ ("-o" "StrictHostKeyChecking=no")))
+ (tramp-default-port 22)))
+;;;###tramp-autoload
+(add-to-list 'tramp-methods
+ '("ssh1"
+ (tramp-login-program "ssh")
+ (tramp-login-args (("-l" "%u") ("-p" "%p")
+ ("-1") ("-e" "none") ("%h")))
+ (tramp-async-args (("-q")))
+ (tramp-remote-sh "/bin/sh")
+ (tramp-gw-args (("-o" "GlobalKnownHostsFile=/dev/null")
+ ("-o" "UserKnownHostsFile=/dev/null")
+ ("-o" "StrictHostKeyChecking=no")))
+ (tramp-default-port 22)))
+;;;###tramp-autoload
+(add-to-list 'tramp-methods
+ '("ssh2"
+ (tramp-login-program "ssh")
+ (tramp-login-args (("-l" "%u") ("-p" "%p")
+ ("-2") ("-e" "none") ("%h")))
+ (tramp-async-args (("-q")))
+ (tramp-remote-sh "/bin/sh")
+ (tramp-gw-args (("-o" "GlobalKnownHostsFile=/dev/null")
+ ("-o" "UserKnownHostsFile=/dev/null")
+ ("-o" "StrictHostKeyChecking=no")))
+ (tramp-default-port 22)))
+;;;###tramp-autoload
+(add-to-list 'tramp-methods
+ '("sshx"
+ (tramp-login-program "ssh")
+ (tramp-login-args (("-l" "%u") ("-p" "%p")
+ ("-e" "none") ("-t" "-t")
+ ("%h") ("/bin/sh")))
+ (tramp-async-args (("-q")))
+ (tramp-remote-sh "/bin/sh")
+ (tramp-gw-args (("-o" "GlobalKnownHostsFile=/dev/null")
+ ("-o" "UserKnownHostsFile=/dev/null")
+ ("-o" "StrictHostKeyChecking=no")))
+ (tramp-default-port 22)))
+;;;###tramp-autoload
+(add-to-list 'tramp-methods
+ '("telnet"
+ (tramp-login-program "telnet")
+ (tramp-login-args (("%h") ("%p")))
+ (tramp-remote-sh "/bin/sh")
+ (tramp-default-port 23)))
+;;;###tramp-autoload
+(add-to-list 'tramp-methods
+ '("su"
+ (tramp-login-program "su")
+ (tramp-login-args (("-") ("%u")))
+ (tramp-remote-sh "/bin/sh")))
+;;;###tramp-autoload
+(add-to-list 'tramp-methods
+ '("sudo"
+ (tramp-login-program "sudo")
+ (tramp-login-args (("-u" "%u") ("-s") ("-H") ("-p" "Password:")))
+ (tramp-remote-sh "/bin/sh")))
+;;;###tramp-autoload
+(add-to-list 'tramp-methods
+ '("ksu"
+ (tramp-login-program "ksu")
+ (tramp-login-args (("%u") ("-q")))
+ (tramp-remote-sh "/bin/sh")))
+;;;###tramp-autoload
+(add-to-list 'tramp-methods
+ '("krlogin"
+ (tramp-login-program "krlogin")
+ (tramp-login-args (("%h") ("-l" "%u") ("-x")))
+ (tramp-remote-sh "/bin/sh")))
+;;;###tramp-autoload
+(add-to-list 'tramp-methods
+ '("plink"
+ (tramp-login-program "plink")
+ (tramp-login-args (("-l" "%u") ("-P" "%p") ("-ssh") ("%h")))
+ (tramp-remote-sh "/bin/sh")
+ (tramp-password-end-of-line "xy") ;see docstring for "xy"
+ (tramp-default-port 22)))
+;;;###tramp-autoload
+(add-to-list 'tramp-methods
+ '("plink1"
+ (tramp-login-program "plink")
+ (tramp-login-args (("-l" "%u") ("-P" "%p") ("-1" "-ssh") ("%h")))
+ (tramp-remote-sh "/bin/sh")
+ (tramp-password-end-of-line "xy") ;see docstring for "xy"
+ (tramp-default-port 22)))
+;;;###tramp-autoload
+(add-to-list 'tramp-methods
+ `("plinkx"
+ (tramp-login-program "plink")
+ ;; ("%h") must be a single element, see
+ ;; `tramp-compute-multi-hops'.
+ (tramp-login-args (("-load") ("%h") ("-t")
+ (,(format
+ "env 'TERM=%s' 'PROMPT_COMMAND=' 'PS1=%s'"
+ tramp-terminal-type
+ tramp-initial-end-of-output))
+ ("/bin/sh")))
+ (tramp-remote-sh "/bin/sh")))
+;;;###tramp-autoload
+(add-to-list 'tramp-methods
+ '("pscp"
+ (tramp-login-program "plink")
+ (tramp-login-args (("-l" "%u") ("-P" "%p") ("-ssh") ("%h")))
+ (tramp-remote-sh "/bin/sh")
+ (tramp-copy-program "pscp")
+ (tramp-copy-args (("-P" "%p") ("-scp") ("%k" "-p")
+ ("-q") ("-r")))
+ (tramp-copy-keep-date t)
+ (tramp-copy-recursive t)
+ (tramp-password-end-of-line "xy") ;see docstring for "xy"
+ (tramp-default-port 22)))
+;;;###tramp-autoload
+(add-to-list 'tramp-methods
+ '("psftp"
+ (tramp-login-program "plink")
+ (tramp-login-args (("-l" "%u") ("-P" "%p") ("-ssh") ("%h")))
+ (tramp-remote-sh "/bin/sh")
+ (tramp-copy-program "pscp")
+ (tramp-copy-args (("-P" "%p") ("-sftp") ("%k" "-p")
+ ("-q") ("-r")))
+ (tramp-copy-keep-date t)
+ (tramp-copy-recursive t)
+ (tramp-password-end-of-line "xy"))) ;see docstring for "xy"
+;;;###tramp-autoload
+(add-to-list 'tramp-methods
+ '("fcp"
+ (tramp-login-program "fsh")
+ (tramp-login-args (("%h") ("-l" "%u") ("sh" "-i")))
+ (tramp-remote-sh "/bin/sh -i")
+ (tramp-copy-program "fcp")
+ (tramp-copy-args (("%k" "-p")))
+ (tramp-copy-keep-date t)))
+
+;;;###tramp-autoload
+(add-to-list 'tramp-default-method-alist
+ `(,tramp-local-host-regexp "\\`root\\'" "su"))
+
+;;;###tramp-autoload
+(add-to-list 'tramp-default-user-alist
+ `(,(concat "\\`" (regexp-opt '("su" "sudo" "ksu")) "\\'")
+ nil "root"))
+;; Do not add "ssh" based methods, otherwise ~/.ssh/config would be ignored.
+;;;###tramp-autoload
+(add-to-list 'tramp-default-user-alist
+ `(,(concat
+ "\\`"
+ (regexp-opt
+ '("rcp" "remcp" "rsh" "telnet" "krlogin"
+ "plink" "plink1" "pscp" "psftp" "fcp"))
+ "\\'")
+ nil ,(user-login-name)))
+
+(defconst tramp-completion-function-alist-rsh
+ '((tramp-parse-rhosts "/etc/hosts.equiv")
+ (tramp-parse-rhosts "~/.rhosts"))
+ "Default list of (FUNCTION FILE) pairs to be examined for rsh methods.")
+
+(defconst tramp-completion-function-alist-ssh
+ '((tramp-parse-rhosts "/etc/hosts.equiv")
+ (tramp-parse-rhosts "/etc/shosts.equiv")
+ (tramp-parse-shosts "/etc/ssh_known_hosts")
+ (tramp-parse-sconfig "/etc/ssh_config")
+ (tramp-parse-shostkeys "/etc/ssh2/hostkeys")
+ (tramp-parse-sknownhosts "/etc/ssh2/knownhosts")
+ (tramp-parse-rhosts "~/.rhosts")
+ (tramp-parse-rhosts "~/.shosts")
+ (tramp-parse-shosts "~/.ssh/known_hosts")
+ (tramp-parse-sconfig "~/.ssh/config")
+ (tramp-parse-shostkeys "~/.ssh2/hostkeys")
+ (tramp-parse-sknownhosts "~/.ssh2/knownhosts"))
+ "Default list of (FUNCTION FILE) pairs to be examined for ssh methods.")
+
+(defconst tramp-completion-function-alist-telnet
+ '((tramp-parse-hosts "/etc/hosts"))
+ "Default list of (FUNCTION FILE) pairs to be examined for telnet methods.")
+
+(defconst tramp-completion-function-alist-su
+ '((tramp-parse-passwd "/etc/passwd"))
+ "Default list of (FUNCTION FILE) pairs to be examined for su methods.")
+
+(defconst tramp-completion-function-alist-putty
+ '((tramp-parse-putty
+ "HKEY_CURRENT_USER\\Software\\SimonTatham\\PuTTY\\Sessions"))
+ "Default list of (FUNCTION REGISTRY) pairs to be examined for putty methods.")
+
+(tramp-set-completion-function "rcp" tramp-completion-function-alist-rsh)
+(tramp-set-completion-function "remcp" tramp-completion-function-alist-rsh)
+(tramp-set-completion-function "scp" tramp-completion-function-alist-ssh)
+(tramp-set-completion-function "scp1" tramp-completion-function-alist-ssh)
+(tramp-set-completion-function "scp2" tramp-completion-function-alist-ssh)
+(tramp-set-completion-function "scpc" tramp-completion-function-alist-ssh)
+(tramp-set-completion-function "scpx" tramp-completion-function-alist-ssh)
+(tramp-set-completion-function "sftp" tramp-completion-function-alist-ssh)
+(tramp-set-completion-function "rsync" tramp-completion-function-alist-ssh)
+(tramp-set-completion-function "rsyncc" tramp-completion-function-alist-ssh)
+(tramp-set-completion-function "rsh" tramp-completion-function-alist-rsh)
+(tramp-set-completion-function "remsh" tramp-completion-function-alist-rsh)
+(tramp-set-completion-function "ssh" tramp-completion-function-alist-ssh)
+(tramp-set-completion-function "ssh1" tramp-completion-function-alist-ssh)
+(tramp-set-completion-function "ssh2" tramp-completion-function-alist-ssh)
+(tramp-set-completion-function "ssh1_old" tramp-completion-function-alist-ssh)
+(tramp-set-completion-function "ssh2_old" tramp-completion-function-alist-ssh)
+(tramp-set-completion-function "sshx" tramp-completion-function-alist-ssh)
+(tramp-set-completion-function "telnet" tramp-completion-function-alist-telnet)
+(tramp-set-completion-function "su" tramp-completion-function-alist-su)
+(tramp-set-completion-function "sudo" tramp-completion-function-alist-su)
+(tramp-set-completion-function "ksu" tramp-completion-function-alist-su)
+(tramp-set-completion-function "krlogin" tramp-completion-function-alist-rsh)
+(tramp-set-completion-function "plink" tramp-completion-function-alist-ssh)
+(tramp-set-completion-function "plink1" tramp-completion-function-alist-ssh)
+(tramp-set-completion-function "plinkx" tramp-completion-function-alist-putty)
+(tramp-set-completion-function "pscp" tramp-completion-function-alist-ssh)
+(tramp-set-completion-function "fcp" tramp-completion-function-alist-ssh)
+
+;; "getconf PATH" yields:
+;; HP-UX: /usr/bin:/usr/ccs/bin:/opt/ansic/bin:/opt/langtools/bin:/opt/fortran/bin
+;; Solaris: /usr/xpg4/bin:/usr/ccs/bin:/usr/bin:/opt/SUNWspro/bin
+;; GNU/Linux (Debian, Suse): /bin:/usr/bin
+;; FreeBSD: /usr/bin:/bin:/usr/sbin:/sbin: - beware trailing ":"!
+;; IRIX64: /usr/bin
+(defcustom tramp-remote-path
+ '(tramp-default-remote-path "/usr/sbin" "/usr/local/bin"
+ "/local/bin" "/local/freeware/bin" "/local/gnu/bin"
+ "/usr/freeware/bin" "/usr/pkg/bin" "/usr/contrib/bin")
+ "*List of directories to search for executables on remote host.
+For every remote host, this variable will be set buffer local,
+keeping the list of existing directories on that host.
+
+You can use `~' in this list, but when searching for a shell which groks
+tilde expansion, all directory names starting with `~' will be ignored.
+
+`Default Directories' represent the list of directories given by
+the command \"getconf PATH\". It is recommended to use this
+entry on top of this list, because these are the default
+directories for POSIX compatible commands.
+
+`Private Directories' are the settings of the $PATH environment,
+as given in your `~/.profile'."
+ :group 'tramp
+ :type '(repeat (choice
+ (const :tag "Default Directories" tramp-default-remote-path)
+ (const :tag "Private Directories" tramp-own-remote-path)
+ (string :tag "Directory"))))
+
+(defcustom tramp-remote-process-environment
+ `("HISTFILE=$HOME/.tramp_history" "HISTSIZE=1" "LC_ALL=C"
+ ,(format "TERM=%s" tramp-terminal-type)
+ "EMACS=t" ;; Deprecated.
+ ,(format "INSIDE_EMACS='%s,tramp:%s'" emacs-version tramp-version)
+ "CDPATH=" "HISTORY=" "MAIL=" "MAILCHECK=" "MAILPATH="
+ "autocorrect=" "correct=")
+
+ "*List of environment variables to be set on the remote host.
+
+Each element should be a string of the form ENVVARNAME=VALUE. An
+entry ENVVARNAME= diables the corresponding environment variable,
+which might have been set in the init files like ~/.profile.
+
+Special handling is applied to the PATH environment, which should
+not be set here. Instead of, it should be set via `tramp-remote-path'."
+ :group 'tramp
+ :type '(repeat string))
+
+(defcustom tramp-sh-extra-args '(("/bash\\'" . "-norc -noprofile"))
+ "*Alist specifying extra arguments to pass to the remote shell.
+Entries are (REGEXP . ARGS) where REGEXP is a regular expression
+matching the shell file name and ARGS is a string specifying the
+arguments.
+
+This variable is only used when Tramp needs to start up another shell
+for tilde expansion. The extra arguments should typically prevent the
+shell from reading its init file."
+ :group 'tramp
+ ;; This might be the wrong way to test whether the widget type
+ ;; `alist' is available. Who knows the right way to test it?
+ :type (if (get 'alist 'widget-type)
+ '(alist :key-type string :value-type string)
+ '(repeat (cons string string))))
+
+(defconst tramp-actions-before-shell
+ '((tramp-login-prompt-regexp tramp-action-login)
+ (tramp-password-prompt-regexp tramp-action-password)
+ (tramp-wrong-passwd-regexp tramp-action-permission-denied)
+ (shell-prompt-pattern tramp-action-succeed)
+ (tramp-shell-prompt-pattern tramp-action-succeed)
+ (tramp-yesno-prompt-regexp tramp-action-yesno)
+ (tramp-yn-prompt-regexp tramp-action-yn)
+ (tramp-terminal-prompt-regexp tramp-action-terminal)
+ (tramp-process-alive-regexp tramp-action-process-alive))
+ "List of pattern/action pairs.
+Whenever a pattern matches, the corresponding action is performed.
+Each item looks like (PATTERN ACTION).
+
+The PATTERN should be a symbol, a variable. The value of this
+variable gives the regular expression to search for. Note that the
+regexp must match at the end of the buffer, \"\\'\" is implicitly
+appended to it.
+
+The ACTION should also be a symbol, but a function. When the
+corresponding PATTERN matches, the ACTION function is called.")
+
+(defconst tramp-actions-copy-out-of-band
+ '((tramp-password-prompt-regexp tramp-action-password)
+ (tramp-wrong-passwd-regexp tramp-action-permission-denied)
+ (tramp-copy-failed-regexp tramp-action-permission-denied)
+ (tramp-process-alive-regexp tramp-action-out-of-band))
+ "List of pattern/action pairs.
+This list is used for copying/renaming with out-of-band methods.
+
+See `tramp-actions-before-shell' for more info.")
+
+(defconst tramp-uudecode
+ "(echo begin 600 /tmp/tramp.$$; tail +2) | uudecode
+cat /tmp/tramp.$$
+rm -f /tmp/tramp.$$"
+ "Shell function to implement `uudecode' to standard output.
+Many systems support `uudecode -o /dev/stdout' or `uudecode -o -'
+for this or `uudecode -p', but some systems don't, and for them
+we have this shell function.")
+
+(defconst tramp-perl-file-truename
+ "%s -e '
+use File::Spec;
+use Cwd \"realpath\";
+
+sub recursive {
+ my ($volume, @dirs) = @_;
+ my $real = realpath(File::Spec->catpath(
+ $volume, File::Spec->catdir(@dirs), \"\"));
+ if ($real) {
+ my ($vol, $dir) = File::Spec->splitpath($real, 1);
+ return ($vol, File::Spec->splitdir($dir));
+ }
+ else {
+ my $last = pop(@dirs);
+ ($volume, @dirs) = recursive($volume, @dirs);
+ push(@dirs, $last);
+ return ($volume, @dirs);
+ }
+}
+
+$result = realpath($ARGV[0]);
+if (!$result) {
+ my ($vol, $dir) = File::Spec->splitpath($ARGV[0], 1);
+ ($vol, @dirs) = recursive($vol, File::Spec->splitdir($dir));
+
+ $result = File::Spec->catpath($vol, File::Spec->catdir(@dirs), \"\");
+}
+
+if ($ARGV[0] =~ /\\/$/) {
+ $result = $result . \"/\";
+}
+
+print \"\\\"$result\\\"\\n\";
+' \"$1\" 2>/dev/null"
+ "Perl script to produce output suitable for use with `file-truename'
+on the remote file system.
+Escape sequence %s is replaced with name of Perl binary.
+This string is passed to `format', so percent characters need to be doubled.")
+
+(defconst tramp-perl-file-name-all-completions
+ "%s -e 'sub case {
+ my $str = shift;
+ if ($ARGV[2]) {
+ return lc($str);
+ }
+ else {
+ return $str;
+ }
+}
+opendir(d, $ARGV[0]) || die(\"$ARGV[0]: $!\\nfail\\n\");
+@files = readdir(d); closedir(d);
+foreach $f (@files) {
+ if (case(substr($f, 0, length($ARGV[1]))) eq case($ARGV[1])) {
+ if (-d \"$ARGV[0]/$f\") {
+ print \"$f/\\n\";
+ }
+ else {
+ print \"$f\\n\";
+ }
+ }
+}
+print \"ok\\n\"
+' \"$1\" \"$2\" \"$3\" 2>/dev/null"
+ "Perl script to produce output suitable for use with
+`file-name-all-completions' on the remote file system. Escape
+sequence %s is replaced with name of Perl binary. This string is
+passed to `format', so percent characters need to be doubled.")
+
+;; Perl script to implement `file-attributes' in a Lisp `read'able
+;; output. If you are hacking on this, note that you get *no* output
+;; unless this spits out a complete line, including the '\n' at the
+;; end.
+;; The device number is returned as "-1", because there will be a virtual
+;; device number set in `tramp-sh-handle-file-attributes'.
+(defconst tramp-perl-file-attributes
+ "%s -e '
+@stat = lstat($ARGV[0]);
+if (!@stat) {
+ print \"nil\\n\";
+ exit 0;
+}
+if (($stat[2] & 0170000) == 0120000)
+{
+ $type = readlink($ARGV[0]);
+ $type = \"\\\"$type\\\"\";
+}
+elsif (($stat[2] & 0170000) == 040000)
+{
+ $type = \"t\";
+}
+else
+{
+ $type = \"nil\"
+};
+$uid = ($ARGV[1] eq \"integer\") ? $stat[4] : \"\\\"\" . getpwuid($stat[4]) . \"\\\"\";
+$gid = ($ARGV[1] eq \"integer\") ? $stat[5] : \"\\\"\" . getgrgid($stat[5]) . \"\\\"\";
+printf(
+ \"(%%s %%u %%s %%s (%%u %%u) (%%u %%u) (%%u %%u) %%u.0 %%u t (%%u . %%u) -1)\\n\",
+ $type,
+ $stat[3],
+ $uid,
+ $gid,
+ $stat[8] >> 16 & 0xffff,
+ $stat[8] & 0xffff,
+ $stat[9] >> 16 & 0xffff,
+ $stat[9] & 0xffff,
+ $stat[10] >> 16 & 0xffff,
+ $stat[10] & 0xffff,
+ $stat[7],
+ $stat[2],
+ $stat[1] >> 16 & 0xffff,
+ $stat[1] & 0xffff
+);' \"$1\" \"$2\" 2>/dev/null"
+ "Perl script to produce output suitable for use with `file-attributes'
+on the remote file system.
+Escape sequence %s is replaced with name of Perl binary.
+This string is passed to `format', so percent characters need to be doubled.")
+
+(defconst tramp-perl-directory-files-and-attributes
+ "%s -e '
+chdir($ARGV[0]) or printf(\"\\\"Cannot change to $ARGV[0]: $''!''\\\"\\n\"), exit();
+opendir(DIR,\".\") or printf(\"\\\"Cannot open directory $ARGV[0]: $''!''\\\"\\n\"), exit();
+@list = readdir(DIR);
+closedir(DIR);
+$n = scalar(@list);
+printf(\"(\\n\");
+for($i = 0; $i < $n; $i++)
+{
+ $filename = $list[$i];
+ @stat = lstat($filename);
+ if (($stat[2] & 0170000) == 0120000)
+ {
+ $type = readlink($filename);
+ $type = \"\\\"$type\\\"\";
+ }
+ elsif (($stat[2] & 0170000) == 040000)
+ {
+ $type = \"t\";
+ }
+ else
+ {
+ $type = \"nil\"
+ };
+ $uid = ($ARGV[1] eq \"integer\") ? $stat[4] : \"\\\"\" . getpwuid($stat[4]) . \"\\\"\";
+ $gid = ($ARGV[1] eq \"integer\") ? $stat[5] : \"\\\"\" . getgrgid($stat[5]) . \"\\\"\";
+ printf(
+ \"(\\\"%%s\\\" %%s %%u %%s %%s (%%u %%u) (%%u %%u) (%%u %%u) %%u.0 %%u t (%%u . %%u) (%%u . %%u))\\n\",
+ $filename,
+ $type,
+ $stat[3],
+ $uid,
+ $gid,
+ $stat[8] >> 16 & 0xffff,
+ $stat[8] & 0xffff,
+ $stat[9] >> 16 & 0xffff,
+ $stat[9] & 0xffff,
+ $stat[10] >> 16 & 0xffff,
+ $stat[10] & 0xffff,
+ $stat[7],
+ $stat[2],
+ $stat[1] >> 16 & 0xffff,
+ $stat[1] & 0xffff,
+ $stat[0] >> 16 & 0xffff,
+ $stat[0] & 0xffff);
+}
+printf(\")\\n\");' \"$1\" \"$2\" 2>/dev/null"
+ "Perl script implementing `directory-files-attributes' as Lisp `read'able
+output.
+Escape sequence %s is replaced with name of Perl binary.
+This string is passed to `format', so percent characters need to be doubled.")
+
+;; These two use base64 encoding.
+(defconst tramp-perl-encode-with-module
+ "%s -MMIME::Base64 -0777 -ne 'print encode_base64($_)' 2>/dev/null"
+ "Perl program to use for encoding a file.
+Escape sequence %s is replaced with name of Perl binary.
+This string is passed to `format', so percent characters need to be doubled.
+This implementation requires the MIME::Base64 Perl module to be installed
+on the remote host.")
+
+(defconst tramp-perl-decode-with-module
+ "%s -MMIME::Base64 -0777 -ne 'print decode_base64($_)' 2>/dev/null"
+ "Perl program to use for decoding a file.
+Escape sequence %s is replaced with name of Perl binary.
+This string is passed to `format', so percent characters need to be doubled.
+This implementation requires the MIME::Base64 Perl module to be installed
+on the remote host.")
+
+(defconst tramp-perl-encode
+ "%s -e '
+# This script contributed by Juanma Barranquero <lektu@terra.es>.
++# Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
+# Free Software Foundation, Inc.
+use strict;
+
+my %%trans = do {
+ my $i = 0;
+ map {(substr(unpack(q(B8), chr $i++), 2, 6), $_)}
+ split //, q(ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/);
+};
+
+binmode(\\*STDIN);
+
+# We read in chunks of 54 bytes, to generate output lines
+# of 72 chars (plus end of line)
+$/ = \\54;
+
+while (my $data = <STDIN>) {
+ my $pad = q();
+
+ # Only for the last chunk, and only if did not fill the last three-byte packet
+ if (eof) {
+ my $mod = length($data) %% 3;
+ $pad = q(=) x (3 - $mod) if $mod;
+ }
+
+ # Not the fastest method, but it is simple: unpack to binary string, split
+ # by groups of 6 bits and convert back from binary to byte; then map into
+ # the translation table
+ print
+ join q(),
+ map($trans{$_},
+ (substr(unpack(q(B*), $data) . q(00000), 0, 432) =~ /....../g)),
+ $pad,
+ qq(\\n);
+}' 2>/dev/null"
+ "Perl program to use for encoding a file.
+Escape sequence %s is replaced with name of Perl binary.
+This string is passed to `format', so percent characters need to be doubled.")
+
+(defconst tramp-perl-decode
+ "%s -e '
+# This script contributed by Juanma Barranquero <lektu@terra.es>.
+# Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
+# Free Software Foundation, Inc.
+use strict;
+
+my %%trans = do {
+ my $i = 0;
+ map {($_, substr(unpack(q(B8), chr $i++), 2, 6))}
+ split //, q(ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/)
+};
+
+my %%bytes = map {(unpack(q(B8), chr $_), chr $_)} 0 .. 255;
+
+binmode(\\*STDOUT);
+
+# We are going to accumulate into $pending to accept any line length
+# (we do not check they are <= 76 chars as the RFC says)
+my $pending = q();
+
+while (my $data = <STDIN>) {
+ chomp $data;
+
+ # If we find one or two =, we have reached the end and
+ # any following data is to be discarded
+ my $finished = $data =~ s/(==?).*/$1/;
+ $pending .= $data;
+
+ my $len = length($pending);
+ my $chunk = substr($pending, 0, $len & ~3);
+ $pending = substr($pending, $len & ~3 + 1);
+
+ # Easy method: translate from chars to (pregenerated) six-bit packets, join,
+ # split in 8-bit chunks and convert back to char.
+ print join q(),
+ map $bytes{$_},
+ ((join q(), map {$trans{$_} || q()} split //, $chunk) =~ /......../g);
+
+ last if $finished;
+}' 2>/dev/null"
+ "Perl program to use for decoding a file.
+Escape sequence %s is replaced with name of Perl binary.
+This string is passed to `format', so percent characters need to be doubled.")
+
+(defconst tramp-vc-registered-read-file-names
+ "echo \"(\"
+while read file; do
+ if %s \"$file\"; then
+ echo \"(\\\"$file\\\" \\\"file-exists-p\\\" t)\"
+ else
+ echo \"(\\\"$file\\\" \\\"file-exists-p\\\" nil)\"
+ fi
+ if %s \"$file\"; then
+ echo \"(\\\"$file\\\" \\\"file-readable-p\\\" t)\"
+ else
+ echo \"(\\\"$file\\\" \\\"file-readable-p\\\" nil)\"
+ fi
+done
+echo \")\""
+ "Script to check existence of VC related files.
+It must be send formatted with two strings; the tests for file
+existence, and file readability. Input shall be read via
+here-document, otherwise the command could exceed maximum length
+of command line.")
+
+(defconst tramp-file-mode-type-map
+ '((0 . "-") ; Normal file (SVID-v2 and XPG2)
+ (1 . "p") ; fifo
+ (2 . "c") ; character device
+ (3 . "m") ; multiplexed character device (v7)
+ (4 . "d") ; directory
+ (5 . "?") ; Named special file (XENIX)
+ (6 . "b") ; block device
+ (7 . "?") ; multiplexed block device (v7)
+ (8 . "-") ; regular file
+ (9 . "n") ; network special file (HP-UX)
+ (10 . "l") ; symlink
+ (11 . "?") ; ACL shadow inode (Solaris, not userspace)
+ (12 . "s") ; socket
+ (13 . "D") ; door special (Solaris)
+ (14 . "w")) ; whiteout (BSD)
+ "A list of file types returned from the `stat' system call.
+This is used to map a mode number to a permission string.")
+
+;; New handlers should be added here. The following operations can be
+;; handled using the normal primitives: file-name-sans-versions,
+;; get-file-buffer.
+(defconst tramp-sh-file-name-handler-alist
+ '((load . tramp-handle-load)
+ (make-symbolic-link . tramp-sh-handle-make-symbolic-link)
+ (file-name-as-directory . tramp-handle-file-name-as-directory)
+ (file-name-directory . tramp-handle-file-name-directory)
+ (file-name-nondirectory . tramp-handle-file-name-nondirectory)
+ (file-truename . tramp-sh-handle-file-truename)
+ (file-exists-p . tramp-sh-handle-file-exists-p)
+ (file-directory-p . tramp-sh-handle-file-directory-p)
+ (file-executable-p . tramp-sh-handle-file-executable-p)
+ (file-readable-p . tramp-sh-handle-file-readable-p)
+ (file-regular-p . tramp-handle-file-regular-p)
+ (file-symlink-p . tramp-handle-file-symlink-p)
+ (file-writable-p . tramp-sh-handle-file-writable-p)
+ (file-ownership-preserved-p . tramp-sh-handle-file-ownership-preserved-p)
+ (file-newer-than-file-p . tramp-sh-handle-file-newer-than-file-p)
+ (file-attributes . tramp-sh-handle-file-attributes)
+ (file-modes . tramp-handle-file-modes)
+ (directory-files . tramp-handle-directory-files)
+ (directory-files-and-attributes
+ . tramp-sh-handle-directory-files-and-attributes)
+ (file-name-all-completions . tramp-sh-handle-file-name-all-completions)
+ (file-name-completion . tramp-handle-file-name-completion)
+ (add-name-to-file . tramp-sh-handle-add-name-to-file)
+ (copy-file . tramp-sh-handle-copy-file)
+ (copy-directory . tramp-sh-handle-copy-directory)
+ (rename-file . tramp-sh-handle-rename-file)
+ (set-file-modes . tramp-sh-handle-set-file-modes)
+ (set-file-times . tramp-sh-handle-set-file-times)
+ (make-directory . tramp-sh-handle-make-directory)
+ (delete-directory . tramp-sh-handle-delete-directory)
+ (delete-file . tramp-sh-handle-delete-file)
+ (directory-file-name . tramp-handle-directory-file-name)
+ ;; `executable-find' is not official yet.
+ (executable-find . tramp-sh-handle-executable-find)
+ (start-file-process . tramp-sh-handle-start-file-process)
+ (process-file . tramp-sh-handle-process-file)
+ (shell-command . tramp-sh-handle-shell-command)
+ (insert-directory . tramp-sh-handle-insert-directory)
+ (expand-file-name . tramp-sh-handle-expand-file-name)
+ (substitute-in-file-name . tramp-handle-substitute-in-file-name)
+ (file-local-copy . tramp-sh-handle-file-local-copy)
+ (file-remote-p . tramp-handle-file-remote-p)
+ (insert-file-contents . tramp-handle-insert-file-contents)
+ (insert-file-contents-literally
+ . tramp-sh-handle-insert-file-contents-literally)
+ (write-region . tramp-sh-handle-write-region)
+ (find-backup-file-name . tramp-handle-find-backup-file-name)
+ (make-auto-save-file-name . tramp-sh-handle-make-auto-save-file-name)
+ (unhandled-file-name-directory . tramp-handle-unhandled-file-name-directory)
+ (dired-compress-file . tramp-sh-handle-dired-compress-file)
+ (dired-recursive-delete-directory
+ . tramp-sh-handle-dired-recursive-delete-directory)
+ (dired-uncache . tramp-handle-dired-uncache)
+ (set-visited-file-modtime . tramp-sh-handle-set-visited-file-modtime)
+ (verify-visited-file-modtime . tramp-sh-handle-verify-visited-file-modtime)
+ (file-selinux-context . tramp-sh-handle-file-selinux-context)
+ (set-file-selinux-context . tramp-sh-handle-set-file-selinux-context)
+ (vc-registered . tramp-sh-handle-vc-registered))
+ "Alist of handler functions.
+Operations not mentioned here will be handled by the normal Emacs functions.")
+
+;; This must be the last entry, because `identity' always matches.
+;;;###tramp-autoload
+(add-to-list 'tramp-foreign-file-name-handler-alist
+ '(identity . tramp-sh-file-name-handler) 'append)
+
+;;; File Name Handler Functions:
+
+(defun tramp-sh-handle-make-symbolic-link
+ (filename linkname &optional ok-if-already-exists)
+ "Like `make-symbolic-link' for Tramp files.
+If LINKNAME is a non-Tramp file, it is used verbatim as the target of
+the symlink. If LINKNAME is a Tramp file, only the localname component is
+used as the target of the symlink.
+
+If LINKNAME is a Tramp file and the localname component is relative, then
+it is expanded first, before the localname component is taken. Note that
+this can give surprising results if the user/host for the source and
+target of the symlink differ."
+ (with-parsed-tramp-file-name linkname l
+ (let ((ln (tramp-get-remote-ln l))
+ (cwd (tramp-run-real-handler
+ 'file-name-directory (list l-localname))))
+ (unless ln
+ (tramp-error
+ l 'file-error
+ "Making a symbolic link. ln(1) does not exist on the remote host."))
+
+ ;; Do the 'confirm if exists' thing.
+ (when (file-exists-p linkname)
+ ;; What to do?
+ (if (or (null ok-if-already-exists) ; not allowed to exist
+ (and (numberp ok-if-already-exists)
+ (not (yes-or-no-p
+ (format
+ "File %s already exists; make it a link anyway? "
+ l-localname)))))
+ (tramp-error
+ l 'file-already-exists "File %s already exists" l-localname)
+ (delete-file linkname)))
+
+ ;; If FILENAME is a Tramp name, use just the localname component.
+ (when (tramp-tramp-file-p filename)
+ (setq filename
+ (tramp-file-name-localname
+ (tramp-dissect-file-name (expand-file-name filename)))))
+
+ (tramp-flush-file-property l (file-name-directory l-localname))
+ (tramp-flush-file-property l l-localname)
+
+ ;; Right, they are on the same host, regardless of user, method, etc.
+ ;; We now make the link on the remote machine. This will occur as the user
+ ;; that FILENAME belongs to.
+ (tramp-send-command-and-check
+ l
+ (format
+ "cd %s && %s -sf %s %s"
+ (tramp-shell-quote-argument cwd)
+ ln
+ (tramp-shell-quote-argument filename)
+ (tramp-shell-quote-argument l-localname))
+ t))))
+
+(defun tramp-sh-handle-file-truename (filename &optional counter prev-dirs)
+ "Like `file-truename' for Tramp files."
+ (with-parsed-tramp-file-name (expand-file-name filename) nil
+ (with-file-property v localname "file-truename"
+ (let ((result nil)) ; result steps in reverse order
+ (tramp-message v 4 "Finding true name for `%s'" filename)
+ (cond
+ ;; Use GNU readlink --canonicalize-missing where available.
+ ((tramp-get-remote-readlink v)
+ (setq result
+ (tramp-send-command-and-read
+ v
+ (format "echo \"\\\"`%s --canonicalize-missing %s`\\\"\""
+ (tramp-get-remote-readlink v)
+ (tramp-shell-quote-argument localname)))))
+
+ ;; Use Perl implementation.
+ ((and (tramp-get-remote-perl v)
+ (tramp-get-connection-property v "perl-file-spec" nil)
+ (tramp-get-connection-property v "perl-cwd-realpath" nil))
+ (tramp-maybe-send-script
+ v tramp-perl-file-truename "tramp_perl_file_truename")
+ (setq result
+ (tramp-send-command-and-read
+ v
+ (format "tramp_perl_file_truename %s"
+ (tramp-shell-quote-argument localname)))))
+
+ ;; Do it yourself. We bind `directory-sep-char' here for
+ ;; XEmacs on Windows, which would otherwise use backslash.
+ (t (let* ((directory-sep-char ?/)
+ (steps (tramp-compat-split-string localname "/"))
+ (localnamedir (tramp-run-real-handler
+ 'file-name-as-directory (list localname)))
+ (is-dir (string= localname localnamedir))
+ (thisstep nil)
+ (numchase 0)
+ ;; Don't make the following value larger than
+ ;; necessary. People expect an error message in a
+ ;; timely fashion when something is wrong;
+ ;; otherwise they might think that Emacs is hung.
+ ;; Of course, correctness has to come first.
+ (numchase-limit 20)
+ symlink-target)
+ (while (and steps (< numchase numchase-limit))
+ (setq thisstep (pop steps))
+ (tramp-message
+ v 5 "Check %s"
+ (mapconcat 'identity
+ (append '("") (reverse result) (list thisstep))
+ "/"))
+ (setq symlink-target
+ (nth 0 (file-attributes
+ (tramp-make-tramp-file-name
+ method user host
+ (mapconcat 'identity
+ (append '("")
+ (reverse result)
+ (list thisstep))
+ "/")))))
+ (cond ((string= "." thisstep)
+ (tramp-message v 5 "Ignoring step `.'"))
+ ((string= ".." thisstep)
+ (tramp-message v 5 "Processing step `..'")
+ (pop result))
+ ((stringp symlink-target)
+ ;; It's a symlink, follow it.
+ (tramp-message v 5 "Follow symlink to %s" symlink-target)
+ (setq numchase (1+ numchase))
+ (when (file-name-absolute-p symlink-target)
+ (setq result nil))
+ ;; If the symlink was absolute, we'll get a string like
+ ;; "/user@host:/some/target"; extract the
+ ;; "/some/target" part from it.
+ (when (tramp-tramp-file-p symlink-target)
+ (unless (tramp-equal-remote filename symlink-target)
+ (tramp-error
+ v 'file-error
+ "Symlink target `%s' on wrong host" symlink-target))
+ (setq symlink-target localname))
+ (setq steps
+ (append (tramp-compat-split-string
+ symlink-target "/")
+ steps)))
+ (t
+ ;; It's a file.
+ (setq result (cons thisstep result)))))
+ (when (>= numchase numchase-limit)
+ (tramp-error
+ v 'file-error
+ "Maximum number (%d) of symlinks exceeded" numchase-limit))
+ (setq result (reverse result))
+ ;; Combine list to form string.
+ (setq result
+ (if result
+ (mapconcat 'identity (cons "" result) "/")
+ "/"))
+ (when (and is-dir (or (string= "" result)
+ (not (string= (substring result -1) "/"))))
+ (setq result (concat result "/"))))))
+
+ (tramp-message v 4 "True name of `%s' is `%s'" filename result)
+ (tramp-make-tramp-file-name method user host result)))))
+
+;; Basic functions.
+
+(defun tramp-sh-handle-file-exists-p (filename)
+ "Like `file-exists-p' for Tramp files."
+ (with-parsed-tramp-file-name filename nil
+ (with-file-property v localname "file-exists-p"
+ (or (not (null (tramp-get-file-property
+ v localname "file-attributes-integer" nil)))
+ (not (null (tramp-get-file-property
+ v localname "file-attributes-string" nil)))
+ (tramp-send-command-and-check
+ v
+ (format
+ "%s %s"
+ (tramp-get-file-exists-command v)
+ (tramp-shell-quote-argument localname)))))))
+
+;; CCC: This should check for an error condition and signal failure
+;; when something goes wrong.
+;; Daniel Pittman <daniel@danann.net>
+(defun tramp-sh-handle-file-attributes (filename &optional id-format)
+ "Like `file-attributes' for Tramp files."
+ (unless id-format (setq id-format 'integer))
+ ;; Don't modify `last-coding-system-used' by accident.
+ (let ((last-coding-system-used last-coding-system-used))
+ (with-parsed-tramp-file-name (expand-file-name filename) nil
+ (with-file-property v localname (format "file-attributes-%s" id-format)
+ (save-excursion
+ (tramp-convert-file-attributes
+ v
+ (cond
+ ((tramp-get-remote-stat v)
+ (tramp-do-file-attributes-with-stat v localname id-format))
+ ((tramp-get-remote-perl v)
+ (tramp-do-file-attributes-with-perl v localname id-format))
+ (t
+ (tramp-do-file-attributes-with-ls v localname id-format)))))))))
+
+(defun tramp-do-file-attributes-with-ls (vec localname &optional id-format)
+ "Implement `file-attributes' for Tramp files using the ls(1) command."
+ (let (symlinkp dirp
+ res-inode res-filemodes res-numlinks
+ res-uid res-gid res-size res-symlink-target)
+ (tramp-message vec 5 "file attributes with ls: %s" localname)
+ (tramp-send-command
+ vec
+ (format "(%s %s || %s -h %s) && %s %s %s"
+ (tramp-get-file-exists-command vec)
+ (tramp-shell-quote-argument localname)
+ (tramp-get-test-command vec)
+ (tramp-shell-quote-argument localname)
+ (tramp-get-ls-command vec)
+ (if (eq id-format 'integer) "-ildn" "-ild")
+ (tramp-shell-quote-argument localname)))
+ ;; parse `ls -l' output ...
+ (with-current-buffer (tramp-get-buffer vec)
+ (when (> (buffer-size) 0)
+ (goto-char (point-min))
+ ;; ... inode
+ (setq res-inode
+ (condition-case err
+ (read (current-buffer))
+ (invalid-read-syntax
+ (when (and (equal (cadr err)
+ "Integer constant overflow in reader")
+ (string-match
+ "^[0-9]+\\([0-9][0-9][0-9][0-9][0-9]\\)\\'"
+ (car (cddr err))))
+ (let* ((big (read (substring (car (cddr err)) 0
+ (match-beginning 1))))
+ (small (read (match-string 1 (car (cddr err)))))
+ (twiddle (/ small 65536)))
+ (cons (+ big twiddle)
+ (- small (* twiddle 65536))))))))
+ ;; ... file mode flags
+ (setq res-filemodes (symbol-name (read (current-buffer))))
+ ;; ... number links
+ (setq res-numlinks (read (current-buffer)))
+ ;; ... uid and gid
+ (setq res-uid (read (current-buffer)))
+ (setq res-gid (read (current-buffer)))
+ (if (eq id-format 'integer)
+ (progn
+ (unless (numberp res-uid) (setq res-uid -1))
+ (unless (numberp res-gid) (setq res-gid -1)))
+ (progn
+ (unless (stringp res-uid) (setq res-uid (symbol-name res-uid)))
+ (unless (stringp res-gid) (setq res-gid (symbol-name res-gid)))))
+ ;; ... size
+ (setq res-size (read (current-buffer)))
+ ;; From the file modes, figure out other stuff.
+ (setq symlinkp (eq ?l (aref res-filemodes 0)))
+ (setq dirp (eq ?d (aref res-filemodes 0)))
+ ;; if symlink, find out file name pointed to
+ (when symlinkp
+ (search-forward "-> ")
+ (setq res-symlink-target (buffer-substring (point) (point-at-eol))))
+ ;; return data gathered
+ (list
+ ;; 0. t for directory, string (name linked to) for symbolic
+ ;; link, or nil.
+ (or dirp res-symlink-target)
+ ;; 1. Number of links to file.
+ res-numlinks
+ ;; 2. File uid.
+ res-uid
+ ;; 3. File gid.
+ res-gid
+ ;; 4. Last access time, as a list of two integers. First
+ ;; integer has high-order 16 bits of time, second has low 16
+ ;; bits.
+ ;; 5. Last modification time, likewise.
+ ;; 6. Last status change time, likewise.
+ '(0 0) '(0 0) '(0 0) ;CCC how to find out?
+ ;; 7. Size in bytes (-1, if number is out of range).
+ res-size
+ ;; 8. File modes, as a string of ten letters or dashes as in ls -l.
+ res-filemodes
+ ;; 9. t if file's gid would change if file were deleted and
+ ;; recreated. Will be set in `tramp-convert-file-attributes'
+ t
+ ;; 10. inode number.
+ res-inode
+ ;; 11. Device number. Will be replaced by a virtual device number.
+ -1
+ )))))
+
+(defun tramp-do-file-attributes-with-perl
+ (vec localname &optional id-format)
+ "Implement `file-attributes' for Tramp files using a Perl script."
+ (tramp-message vec 5 "file attributes with perl: %s" localname)
+ (tramp-maybe-send-script
+ vec tramp-perl-file-attributes "tramp_perl_file_attributes")
+ (tramp-send-command-and-read
+ vec
+ (format "tramp_perl_file_attributes %s %s"
+ (tramp-shell-quote-argument localname) id-format)))
+
+(defun tramp-do-file-attributes-with-stat
+ (vec localname &optional id-format)
+ "Implement `file-attributes' for Tramp files using stat(1) command."
+ (tramp-message vec 5 "file attributes with stat: %s" localname)
+ (tramp-send-command-and-read
+ vec
+ (format
+ ;; On Opsware, pdksh (which is the true name of ksh there) doesn't
+ ;; parse correctly the sequence "((". Therefore, we add a space.
+ "( (%s %s || %s -h %s) && %s -c '((\"%%N\") %%h %s %s %%Xe0 %%Ye0 %%Ze0 %%se0 \"%%A\" t %%ie0 -1)' %s || echo nil)"
+ (tramp-get-file-exists-command vec)
+ (tramp-shell-quote-argument localname)
+ (tramp-get-test-command vec)
+ (tramp-shell-quote-argument localname)
+ (tramp-get-remote-stat vec)
+ (if (eq id-format 'integer) "%u" "\"%U\"")
+ (if (eq id-format 'integer) "%g" "\"%G\"")
+ (tramp-shell-quote-argument localname))))
+
+(defun tramp-sh-handle-set-visited-file-modtime (&optional time-list)
+ "Like `set-visited-file-modtime' for Tramp files."
+ (unless (buffer-file-name)
+ (error "Can't set-visited-file-modtime: buffer `%s' not visiting a file"
+ (buffer-name)))
+ (if time-list
+ (tramp-run-real-handler 'set-visited-file-modtime (list time-list))
+ (let ((f (buffer-file-name))
+ coding-system-used)
+ (with-parsed-tramp-file-name f nil
+ (let* ((attr (file-attributes f))
+ ;; '(-1 65535) means file doesn't exists yet.
+ (modtime (or (nth 5 attr) '(-1 65535))))
+ (when (boundp 'last-coding-system-used)
+ (setq coding-system-used (symbol-value 'last-coding-system-used)))
+ ;; We use '(0 0) as a don't-know value. See also
+ ;; `tramp-do-file-attributes-with-ls'.
+ (if (not (equal modtime '(0 0)))
+ (tramp-run-real-handler 'set-visited-file-modtime (list modtime))
+ (progn
+ (tramp-send-command
+ v
+ (format "%s -ild %s"
+ (tramp-get-ls-command v)
+ (tramp-shell-quote-argument localname)))
+ (setq attr (buffer-substring (point)
+ (progn (end-of-line) (point)))))
+ (tramp-set-file-property
+ v localname "visited-file-modtime-ild" attr))
+ (when (boundp 'last-coding-system-used)
+ (set 'last-coding-system-used coding-system-used))
+ nil)))))
+
+;; This function makes the same assumption as
+;; `tramp-sh-handle-set-visited-file-modtime'.
+(defun tramp-sh-handle-verify-visited-file-modtime (buf)
+ "Like `verify-visited-file-modtime' for Tramp files.
+At the time `verify-visited-file-modtime' calls this function, we
+already know that the buffer is visiting a file and that
+`visited-file-modtime' does not return 0. Do not call this
+function directly, unless those two cases are already taken care
+of."
+ (with-current-buffer buf
+ (let ((f (buffer-file-name)))
+ ;; There is no file visiting the buffer, or the buffer has no
+ ;; recorded last modification time, or there is no established
+ ;; connection.
+ (if (or (not f)
+ (eq (visited-file-modtime) 0)
+ (not (tramp-file-name-handler 'file-remote-p f nil 'connected)))
+ t
+ (with-parsed-tramp-file-name f nil
+ (let* ((remote-file-name-inhibit-cache t)
+ (attr (file-attributes f))
+ (modtime (nth 5 attr))
+ (mt (visited-file-modtime)))
+
+ (cond
+ ;; File exists, and has a known modtime.
+ ((and attr (not (equal modtime '(0 0))))
+ (< (abs (tramp-time-diff
+ modtime
+ ;; For compatibility, deal with both the old
+ ;; (HIGH . LOW) and the new (HIGH LOW) return
+ ;; values of `visited-file-modtime'.
+ (if (atom (cdr mt))
+ (list (car mt) (cdr mt))
+ mt)))
+ 2))
+ ;; Modtime has the don't know value.
+ (attr
+ (tramp-send-command
+ v
+ (format "%s -ild %s"
+ (tramp-get-ls-command v)
+ (tramp-shell-quote-argument localname)))
+ (with-current-buffer (tramp-get-buffer v)
+ (setq attr (buffer-substring
+ (point) (progn (end-of-line) (point)))))
+ (equal
+ attr
+ (tramp-get-file-property
+ v localname "visited-file-modtime-ild" "")))
+ ;; If file does not exist, say it is not modified if and
+ ;; only if that agrees with the buffer's record.
+ (t (equal mt '(-1 65535))))))))))
+
+(defun tramp-sh-handle-set-file-modes (filename mode)
+ "Like `set-file-modes' for Tramp files."
+ (with-parsed-tramp-file-name filename nil
+ (tramp-flush-file-property v localname)
+ ;; FIXME: extract the proper text from chmod's stderr.
+ (tramp-barf-unless-okay
+ v
+ (format "chmod %s %s"
+ (tramp-compat-decimal-to-octal mode)
+ (tramp-shell-quote-argument localname))
+ "Error while changing file's mode %s" filename)))
+
+(defun tramp-sh-handle-set-file-times (filename &optional time)
+ "Like `set-file-times' for Tramp files."
+ (if (file-remote-p filename)
+ (with-parsed-tramp-file-name filename nil
+ (tramp-flush-file-property v localname)
+ (let ((time (if (or (null time) (equal time '(0 0)))
+ (current-time)
+ time))
+ ;; With GNU Emacs, `format-time-string' has an optional
+ ;; parameter UNIVERSAL. This is preferred, because we
+ ;; could handle the case when the remote host is located
+ ;; in a different time zone as the local host.
+ (utc (not (featurep 'xemacs))))
+ (tramp-send-command-and-check
+ v (format "%s touch -t %s %s"
+ (if utc "TZ=UTC; export TZ;" "")
+ (if utc
+ (format-time-string "%Y%m%d%H%M.%S" time t)
+ (format-time-string "%Y%m%d%H%M.%S" time))
+ (tramp-shell-quote-argument localname)))))
+
+ ;; We handle also the local part, because in older Emacsen,
+ ;; without `set-file-times', this function is an alias for this.
+ ;; We are local, so we don't need the UTC settings.
+ (zerop
+ (tramp-compat-call-process
+ "touch" nil nil nil "-t"
+ (format-time-string "%Y%m%d%H%M.%S" time)
+ (tramp-shell-quote-argument filename)))))
+
+(defun tramp-set-file-uid-gid (filename &optional uid gid)
+ "Set the ownership for FILENAME.
+If UID and GID are provided, these values are used; otherwise uid
+and gid of the corresponding user is taken. Both parameters must be integers."
+ ;; Modern Unices allow chown only for root. So we might need
+ ;; another implementation, see `dired-do-chown'. OTOH, it is mostly
+ ;; working with su(do)? when it is needed, so it shall succeed in
+ ;; the majority of cases.
+ ;; Don't modify `last-coding-system-used' by accident.
+ (let ((last-coding-system-used last-coding-system-used))
+ (if (file-remote-p filename)
+ (with-parsed-tramp-file-name filename nil
+ (if (and (zerop (user-uid)) (tramp-local-host-p v))
+ ;; If we are root on the local host, we can do it directly.
+ (tramp-set-file-uid-gid localname uid gid)
+ (let ((uid (or (and (integerp uid) uid)
+ (tramp-get-remote-uid v 'integer)))
+ (gid (or (and (integerp gid) gid)
+ (tramp-get-remote-gid v 'integer))))
+ (tramp-send-command
+ v (format
+ "chown %d:%d %s" uid gid
+ (tramp-shell-quote-argument localname))))))
+
+ ;; We handle also the local part, because there doesn't exist
+ ;; `set-file-uid-gid'. On W32 "chown" might not work.
+ (let ((uid (or (and (integerp uid) uid) (tramp-get-local-uid 'integer)))
+ (gid (or (and (integerp gid) gid) (tramp-get-local-gid 'integer))))
+ (tramp-compat-call-process
+ "chown" nil nil nil
+ (format "%d:%d" uid gid) (tramp-shell-quote-argument filename))))))
+
+(defun tramp-remote-selinux-p (vec)
+ "Check, whether SELINUX is enabled on the remote host."
+ (with-connection-property (tramp-get-connection-process vec) "selinux-p"
+ (let ((result (tramp-find-executable
+ vec "getenforce" (tramp-get-remote-path vec) t t)))
+ (and result
+ (string-equal
+ (tramp-send-command-and-read
+ vec (format "echo \\\"`%S`\\\"" result))
+ "Enforcing")))))
+
+(defun tramp-sh-handle-file-selinux-context (filename)
+ "Like `file-selinux-context' for Tramp files."
+ (with-parsed-tramp-file-name filename nil
+ (with-file-property v localname "file-selinux-context"
+ (let ((context '(nil nil nil nil))
+ (regexp (concat "\\([a-z0-9_]+\\):" "\\([a-z0-9_]+\\):"
+ "\\([a-z0-9_]+\\):" "\\([a-z0-9_]+\\)")))
+ (when (and (tramp-remote-selinux-p v)
+ (tramp-send-command-and-check
+ v (format
+ "%s -d -Z %s"
+ (tramp-get-ls-command v)
+ (tramp-shell-quote-argument localname))))
+ (with-current-buffer (tramp-get-connection-buffer v)
+ (goto-char (point-min))
+ (when (re-search-forward regexp (point-at-eol) t)
+ (setq context (list (match-string 1) (match-string 2)
+ (match-string 3) (match-string 4))))))
+ ;; Return the context.
+ context))))
+
+(defun tramp-sh-handle-set-file-selinux-context (filename context)
+ "Like `set-file-selinux-context' for Tramp files."
+ (with-parsed-tramp-file-name filename nil
+ (if (and (consp context)
+ (tramp-remote-selinux-p v)
+ (tramp-send-command-and-check
+ v (format "chcon %s %s %s %s %s"
+ (if (stringp (nth 0 context))
+ (format "--user=%s" (nth 0 context)) "")
+ (if (stringp (nth 1 context))
+ (format "--role=%s" (nth 1 context)) "")
+ (if (stringp (nth 2 context))
+ (format "--type=%s" (nth 2 context)) "")
+ (if (stringp (nth 3 context))
+ (format "--range=%s" (nth 3 context)) "")
+ (tramp-shell-quote-argument localname))))
+ (tramp-set-file-property v localname "file-selinux-context" context)
+ (tramp-set-file-property v localname "file-selinux-context" 'undef)))
+ ;; We always return nil.
+ nil)
+
+;; Simple functions using the `test' command.
+
+(defun tramp-sh-handle-file-executable-p (filename)
+ "Like `file-executable-p' for Tramp files."
+ (with-parsed-tramp-file-name filename nil
+ (with-file-property v localname "file-executable-p"
+ ;; Examine `file-attributes' cache to see if request can be
+ ;; satisfied without remote operation.
+ (or (tramp-check-cached-permissions v ?x)
+ (tramp-run-test "-x" filename)))))
+
+(defun tramp-sh-handle-file-readable-p (filename)
+ "Like `file-readable-p' for Tramp files."
+ (with-parsed-tramp-file-name filename nil
+ (with-file-property v localname "file-readable-p"
+ ;; Examine `file-attributes' cache to see if request can be
+ ;; satisfied without remote operation.
+ (or (tramp-check-cached-permissions v ?r)
+ (tramp-run-test "-r" filename)))))
+
+;; When the remote shell is started, it looks for a shell which groks
+;; tilde expansion. Here, we assume that all shells which grok tilde
+;; expansion will also provide a `test' command which groks `-nt' (for
+;; newer than). If this breaks, tell me about it and I'll try to do
+;; something smarter about it.
+(defun tramp-sh-handle-file-newer-than-file-p (file1 file2)
+ "Like `file-newer-than-file-p' for Tramp files."
+ (cond ((not (file-exists-p file1))
+ nil)
+ ((not (file-exists-p file2))
+ t)
+ ;; We are sure both files exist at this point.
+ (t
+ (save-excursion
+ ;; We try to get the mtime of both files. If they are not
+ ;; equal to the "dont-know" value, then we subtract the times
+ ;; and obtain the result.
+ (let ((fa1 (file-attributes file1))
+ (fa2 (file-attributes file2)))
+ (if (and (not (equal (nth 5 fa1) '(0 0)))
+ (not (equal (nth 5 fa2) '(0 0))))
+ (> 0 (tramp-time-diff (nth 5 fa2) (nth 5 fa1)))
+ ;; If one of them is the dont-know value, then we can
+ ;; still try to run a shell command on the remote host.
+ ;; However, this only works if both files are Tramp
+ ;; files and both have the same method, same user, same
+ ;; host.
+ (unless (tramp-equal-remote file1 file2)
+ (with-parsed-tramp-file-name
+ (if (tramp-tramp-file-p file1) file1 file2) nil
+ (tramp-error
+ v 'file-error
+ "Files %s and %s must have same method, user, host"
+ file1 file2)))
+ (with-parsed-tramp-file-name file1 nil
+ (tramp-run-test2
+ (tramp-get-test-nt-command v) file1 file2))))))))
+
+;; Functions implemented using the basic functions above.
+
+(defun tramp-sh-handle-file-directory-p (filename)
+ "Like `file-directory-p' for Tramp files."
+ ;; Care must be taken that this function returns `t' for symlinks
+ ;; pointing to directories. Surely the most obvious implementation
+ ;; would be `test -d', but that returns false for such symlinks.
+ ;; CCC: Stefan Monnier says that `test -d' follows symlinks. And
+ ;; I now think he's right. So we could be using `test -d', couldn't
+ ;; we?
+ ;;
+ ;; Alternatives: `cd %s', `test -d %s'
+ (with-parsed-tramp-file-name filename nil
+ (with-file-property v localname "file-directory-p"
+ (tramp-run-test "-d" filename))))
+
+(defun tramp-sh-handle-file-writable-p (filename)
+ "Like `file-writable-p' for Tramp files."
+ (with-parsed-tramp-file-name filename nil
+ (with-file-property v localname "file-writable-p"
+ (if (file-exists-p filename)
+ ;; Examine `file-attributes' cache to see if request can be
+ ;; satisfied without remote operation.
+ (or (tramp-check-cached-permissions v ?w)
+ (tramp-run-test "-w" filename))
+ ;; If file doesn't exist, check if directory is writable.
+ (and (tramp-run-test "-d" (file-name-directory filename))
+ (tramp-run-test "-w" (file-name-directory filename)))))))
+
+(defun tramp-sh-handle-file-ownership-preserved-p (filename)
+ "Like `file-ownership-preserved-p' for Tramp files."
+ (with-parsed-tramp-file-name filename nil
+ (with-file-property v localname "file-ownership-preserved-p"
+ (let ((attributes (file-attributes filename)))
+ ;; Return t if the file doesn't exist, since it's true that no
+ ;; information would be lost by an (attempted) delete and create.
+ (or (null attributes)
+ (= (nth 2 attributes) (tramp-get-remote-uid v 'integer)))))))
+
+;; Directory listings.
+
+(defun tramp-sh-handle-directory-files-and-attributes
+ (directory &optional full match nosort id-format)
+ "Like `directory-files-and-attributes' for Tramp files."
+ (unless id-format (setq id-format 'integer))
+ (when (file-directory-p directory)
+ (setq directory (expand-file-name directory))
+ (let* ((temp
+ (copy-tree
+ (with-parsed-tramp-file-name directory nil
+ (with-file-property
+ v localname
+ (format "directory-files-and-attributes-%s" id-format)
+ (save-excursion
+ (mapcar
+ (lambda (x)
+ (cons (car x)
+ (tramp-convert-file-attributes v (cdr x))))
+ (cond
+ ((tramp-get-remote-stat v)
+ (tramp-do-directory-files-and-attributes-with-stat
+ v localname id-format))
+ ((tramp-get-remote-perl v)
+ (tramp-do-directory-files-and-attributes-with-perl
+ v localname id-format)))))))))
+ result item)
+
+ (while temp
+ (setq item (pop temp))
+ (when (or (null match) (string-match match (car item)))
+ (when full
+ (setcar item (expand-file-name (car item) directory)))
+ (push item result)))
+
+ (if nosort
+ result
+ (sort result (lambda (x y) (string< (car x) (car y))))))))
+
+(defun tramp-do-directory-files-and-attributes-with-perl
+ (vec localname &optional id-format)
+ "Implement `directory-files-and-attributes' for Tramp files using a Perl script."
+ (tramp-message vec 5 "directory-files-and-attributes with perl: %s" localname)
+ (tramp-maybe-send-script
+ vec tramp-perl-directory-files-and-attributes
+ "tramp_perl_directory_files_and_attributes")
+ (let ((object
+ (tramp-send-command-and-read
+ vec
+ (format "tramp_perl_directory_files_and_attributes %s %s"
+ (tramp-shell-quote-argument localname) id-format))))
+ (when (stringp object) (tramp-error vec 'file-error object))
+ object))
+
+(defun tramp-do-directory-files-and-attributes-with-stat
+ (vec localname &optional id-format)
+ "Implement `directory-files-and-attributes' for Tramp files using stat(1) command."
+ (tramp-message vec 5 "directory-files-and-attributes with stat: %s" localname)
+ (tramp-send-command-and-read
+ vec
+ (format
+ (concat
+ ;; We must care about filenames with spaces, or starting with
+ ;; "-"; this would confuse xargs. "ls -aQ" might be a solution,
+ ;; but it does not work on all remote systems. Therefore, we
+ ;; quote the filenames via sed.
+ "cd %s; echo \"(\"; (%s -a | sed -e s/\\$/\\\"/g -e s/^/\\\"/g | xargs "
+ "%s -c '(\"%%n\" (\"%%N\") %%h %s %s %%Xe0 %%Ye0 %%Ze0 %%se0 \"%%A\" t %%ie0 -1)'); "
+ "echo \")\"")
+ (tramp-shell-quote-argument localname)
+ (tramp-get-ls-command vec)
+ (tramp-get-remote-stat vec)
+ (if (eq id-format 'integer) "%u" "\"%U\"")
+ (if (eq id-format 'integer) "%g" "\"%G\""))))
+
+;; This function should return "foo/" for directories and "bar" for
+;; files.
+(defun tramp-sh-handle-file-name-all-completions (filename directory)
+ "Like `file-name-all-completions' for Tramp files."
+ (unless (save-match-data (string-match "/" filename))
+ (with-parsed-tramp-file-name (expand-file-name directory) nil
+
+ (all-completions
+ filename
+ (mapcar
+ 'list
+ (or
+ ;; Try cache entries for filename, filename with last
+ ;; character removed, filename with last two characters
+ ;; removed, ..., and finally the empty string - all
+ ;; concatenated to the local directory name.
+ (let ((remote-file-name-inhibit-cache
+ (or remote-file-name-inhibit-cache
+ tramp-completion-reread-directory-timeout)))
+
+ ;; This is inefficient for very long filenames, pity
+ ;; `reduce' is not available...
+ (car
+ (apply
+ 'append
+ (mapcar
+ (lambda (x)
+ (let ((cache-hit
+ (tramp-get-file-property
+ v
+ (concat localname (substring filename 0 x))
+ "file-name-all-completions"
+ nil)))
+ (when cache-hit (list cache-hit))))
+ (tramp-compat-number-sequence (length filename) 0 -1)))))
+
+ ;; Cache expired or no matching cache entry found so we need
+ ;; to perform a remote operation.
+ (let (result)
+ ;; Get a list of directories and files, including reliably
+ ;; tagging the directories with a trailing '/'. Because I
+ ;; rock. --daniel@danann.net
+
+ ;; Changed to perform `cd' in the same remote op and only
+ ;; get entries starting with `filename'. Capture any `cd'
+ ;; error messages. Ensure any `cd' and `echo' aliases are
+ ;; ignored.
+ (tramp-send-command
+ v
+ (if (tramp-get-remote-perl v)
+ (progn
+ (tramp-maybe-send-script
+ v tramp-perl-file-name-all-completions
+ "tramp_perl_file_name_all_completions")
+ (format "tramp_perl_file_name_all_completions %s %s %d"
+ (tramp-shell-quote-argument localname)
+ (tramp-shell-quote-argument filename)
+ (if (symbol-value
+ ;; `read-file-name-completion-ignore-case'
+ ;; is introduced with Emacs 22.1.
+ (if (boundp
+ 'read-file-name-completion-ignore-case)
+ 'read-file-name-completion-ignore-case
+ 'completion-ignore-case))
+ 1 0)))
+
+ (format (concat
+ "(\\cd %s 2>&1 && (%s %s -a 2>/dev/null"
+ ;; `ls' with wildcard might fail with `Argument
+ ;; list too long' error in some corner cases; if
+ ;; `ls' fails after `cd' succeeded, chances are
+ ;; that's the case, so let's retry without
+ ;; wildcard. This will return "too many" entries
+ ;; but that isn't harmful.
+ " || %s -a 2>/dev/null)"
+ " | while read f; do"
+ " if %s -d \"$f\" 2>/dev/null;"
+ " then \\echo \"$f/\"; else \\echo \"$f\"; fi; done"
+ " && \\echo ok) || \\echo fail")
+ (tramp-shell-quote-argument localname)
+ (tramp-get-ls-command v)
+ ;; When `filename' is empty, just `ls' without
+ ;; filename argument is more efficient than `ls *'
+ ;; for very large directories and might avoid the
+ ;; `Argument list too long' error.
+ ;;
+ ;; With and only with wildcard, we need to add
+ ;; `-d' to prevent `ls' from descending into
+ ;; sub-directories.
+ (if (zerop (length filename))
+ "."
+ (concat (tramp-shell-quote-argument filename) "* -d"))
+ (tramp-get-ls-command v)
+ (tramp-get-test-command v))))
+
+ ;; Now grab the output.
+ (with-current-buffer (tramp-get-buffer v)
+ (goto-char (point-max))
+
+ ;; Check result code, found in last line of output
+ (forward-line -1)
+ (if (looking-at "^fail$")
+ (progn
+ ;; Grab error message from line before last line
+ ;; (it was put there by `cd 2>&1')
+ (forward-line -1)
+ (tramp-error
+ v 'file-error
+ "tramp-sh-handle-file-name-all-completions: %s"
+ (buffer-substring (point) (point-at-eol))))
+ ;; For peace of mind, if buffer doesn't end in `fail'
+ ;; then it should end in `ok'. If neither are in the
+ ;; buffer something went seriously wrong on the remote
+ ;; side.
+ (unless (looking-at "^ok$")
+ (tramp-error
+ v 'file-error
+ "\
+tramp-sh-handle-file-name-all-completions: internal error accessing `%s': `%s'"
+ (tramp-shell-quote-argument localname) (buffer-string))))
+
+ (while (zerop (forward-line -1))
+ (push (buffer-substring (point) (point-at-eol)) result)))
+
+ ;; Because the remote op went through OK we know the
+ ;; directory we `cd'-ed to exists
+ (tramp-set-file-property
+ v localname "file-exists-p" t)
+
+ ;; Because the remote op went through OK we know every
+ ;; file listed by `ls' exists.
+ (mapc (lambda (entry)
+ (tramp-set-file-property
+ v (concat localname entry) "file-exists-p" t))
+ result)
+
+ ;; Store result in the cache
+ (tramp-set-file-property
+ v (concat localname filename)
+ "file-name-all-completions"
+ result))))))))
+
+;; cp, mv and ln
+
+(defun tramp-sh-handle-add-name-to-file
+ (filename newname &optional ok-if-already-exists)
+ "Like `add-name-to-file' for Tramp files."
+ (unless (tramp-equal-remote filename newname)
+ (with-parsed-tramp-file-name
+ (if (tramp-tramp-file-p filename) filename newname) nil
+ (tramp-error
+ v 'file-error
+ "add-name-to-file: %s"
+ "only implemented for same method, same user, same host")))
+ (with-parsed-tramp-file-name filename v1
+ (with-parsed-tramp-file-name newname v2
+ (let ((ln (when v1 (tramp-get-remote-ln v1))))
+ (when (and (not ok-if-already-exists)
+ (file-exists-p newname)
+ (not (numberp ok-if-already-exists))
+ (y-or-n-p
+ (format
+ "File %s already exists; make it a new name anyway? "
+ newname)))
+ (tramp-error
+ v2 'file-error
+ "add-name-to-file: file %s already exists" newname))
+ (tramp-flush-file-property v2 (file-name-directory v2-localname))
+ (tramp-flush-file-property v2 v2-localname)
+ (tramp-barf-unless-okay
+ v1
+ (format "%s %s %s" ln (tramp-shell-quote-argument v1-localname)
+ (tramp-shell-quote-argument v2-localname))
+ "error with add-name-to-file, see buffer `%s' for details"
+ (buffer-name))))))
+
+(defun tramp-sh-handle-copy-file
+ (filename newname &optional ok-if-already-exists keep-date
+ preserve-uid-gid preserve-selinux-context)
+ "Like `copy-file' for Tramp files."
+ (setq filename (expand-file-name filename))
+ (setq newname (expand-file-name newname))
+ (cond
+ ;; At least one file a Tramp file?
+ ((or (tramp-tramp-file-p filename)
+ (tramp-tramp-file-p newname))
+ (tramp-do-copy-or-rename-file
+ 'copy filename newname ok-if-already-exists keep-date
+ preserve-uid-gid preserve-selinux-context))
+ ;; Compat section.
+ (preserve-selinux-context
+ (tramp-run-real-handler
+ 'copy-file
+ (list filename newname ok-if-already-exists keep-date
+ preserve-uid-gid preserve-selinux-context)))
+ (preserve-uid-gid
+ (tramp-run-real-handler
+ 'copy-file
+ (list filename newname ok-if-already-exists keep-date preserve-uid-gid)))
+ (t
+ (tramp-run-real-handler
+ 'copy-file (list filename newname ok-if-already-exists keep-date)))))
+
+(defun tramp-sh-handle-copy-directory
+ (dirname newname &optional keep-date parents)
+ "Like `copy-directory' for Tramp files."
+ (let ((t1 (tramp-tramp-file-p dirname))
+ (t2 (tramp-tramp-file-p newname)))
+ (with-parsed-tramp-file-name (if t1 dirname newname) nil
+ (if (and (tramp-get-method-parameter method 'tramp-copy-recursive)
+ ;; When DIRNAME and NEWNAME are remote, they must have
+ ;; the same method.
+ (or (null t1) (null t2)
+ (string-equal
+ (tramp-file-name-method (tramp-dissect-file-name dirname))
+ (tramp-file-name-method (tramp-dissect-file-name newname)))))
+ ;; scp or rsync DTRT.
+ (progn
+ (setq dirname (directory-file-name (expand-file-name dirname))
+ newname (directory-file-name (expand-file-name newname)))
+ (if (and (file-directory-p newname)
+ (not (string-equal (file-name-nondirectory dirname)
+ (file-name-nondirectory newname))))
+ (setq newname
+ (expand-file-name
+ (file-name-nondirectory dirname) newname)))
+ (if (not (file-directory-p (file-name-directory newname)))
+ (make-directory (file-name-directory newname) parents))
+ (tramp-do-copy-or-rename-file-out-of-band
+ 'copy dirname newname keep-date))
+ ;; We must do it file-wise.
+ (tramp-run-real-handler
+ 'copy-directory (list dirname newname keep-date parents)))
+
+ ;; When newname did exist, we have wrong cached values.
+ (when t2
+ (with-parsed-tramp-file-name newname nil
+ (tramp-flush-file-property v (file-name-directory localname))
+ (tramp-flush-file-property v localname))))))
+
+(defun tramp-sh-handle-rename-file
+ (filename newname &optional ok-if-already-exists)
+ "Like `rename-file' for Tramp files."
+ ;; Check if both files are local -- invoke normal rename-file.
+ ;; Otherwise, use Tramp from local system.
+ (setq filename (expand-file-name filename))
+ (setq newname (expand-file-name newname))
+ ;; At least one file a Tramp file?
+ (if (or (tramp-tramp-file-p filename)
+ (tramp-tramp-file-p newname))
+ (tramp-do-copy-or-rename-file
+ 'rename filename newname ok-if-already-exists t t)
+ (tramp-run-real-handler
+ 'rename-file (list filename newname ok-if-already-exists))))
+
+(defun tramp-do-copy-or-rename-file
+ (op filename newname &optional ok-if-already-exists keep-date
+ preserve-uid-gid preserve-selinux-context)
+ "Copy or rename a remote file.
+OP must be `copy' or `rename' and indicates the operation to perform.
+FILENAME specifies the file to copy or rename, NEWNAME is the name of
+the new file (for copy) or the new name of the file (for rename).
+OK-IF-ALREADY-EXISTS means don't barf if NEWNAME exists already.
+KEEP-DATE means to make sure that NEWNAME has the same timestamp
+as FILENAME. PRESERVE-UID-GID, when non-nil, instructs to keep
+the uid and gid if both files are on the same host.
+PRESERVE-SELINUX-CONTEXT activates selinux commands.
+
+This function is invoked by `tramp-sh-handle-copy-file' and
+`tramp-sh-handle-rename-file'. It is an error if OP is neither
+of `copy' and `rename'. FILENAME and NEWNAME must be absolute
+file names."
+ (unless (memq op '(copy rename))
+ (error "Unknown operation `%s', must be `copy' or `rename'" op))
+ (let ((t1 (tramp-tramp-file-p filename))
+ (t2 (tramp-tramp-file-p newname))
+ (context (and preserve-selinux-context
+ (apply 'file-selinux-context (list filename))))
+ pr tm)
+
+ (with-parsed-tramp-file-name (if t1 filename newname) nil
+ (when (and (not ok-if-already-exists) (file-exists-p newname))
+ (tramp-error
+ v 'file-already-exists "File %s already exists" newname))
+
+ (with-progress-reporter
+ v 0 (format "%s %s to %s"
+ (if (eq op 'copy) "Copying" "Renaming")
+ filename newname)
+
+ (cond
+ ;; Both are Tramp files.
+ ((and t1 t2)
+ (with-parsed-tramp-file-name filename v1
+ (with-parsed-tramp-file-name newname v2
+ (cond
+ ;; Shortcut: if method, host, user are the same for
+ ;; both files, we invoke `cp' or `mv' on the remote
+ ;; host directly.
+ ((tramp-equal-remote filename newname)
+ (tramp-do-copy-or-rename-file-directly
+ op filename newname
+ ok-if-already-exists keep-date preserve-uid-gid))
+
+ ;; Try out-of-band operation.
+ ((tramp-method-out-of-band-p
+ v1 (nth 7 (file-attributes (file-truename filename))))
+ (tramp-do-copy-or-rename-file-out-of-band
+ op filename newname keep-date))
+
+ ;; No shortcut was possible. So we copy the file
+ ;; first. If the operation was `rename', we go back
+ ;; and delete the original file (if the copy was
+ ;; successful). The approach is simple-minded: we
+ ;; create a new buffer, insert the contents of the
+ ;; source file into it, then write out the buffer to
+ ;; the target file. The advantage is that it doesn't
+ ;; matter which filename handlers are used for the
+ ;; source and target file.
+ (t
+ (tramp-do-copy-or-rename-file-via-buffer
+ op filename newname keep-date))))))
+
+ ;; One file is a Tramp file, the other one is local.
+ ((or t1 t2)
+ (cond
+ ;; Fast track on local machine.
+ ((tramp-local-host-p v)
+ (tramp-do-copy-or-rename-file-directly
+ op filename newname
+ ok-if-already-exists keep-date preserve-uid-gid))
+
+ ;; If the Tramp file has an out-of-band method, the
+ ;; corresponding copy-program can be invoked.
+ ((tramp-method-out-of-band-p
+ v (nth 7 (file-attributes (file-truename filename))))
+ (tramp-do-copy-or-rename-file-out-of-band
+ op filename newname keep-date))
+
+ ;; Use the inline method via a Tramp buffer.
+ (t (tramp-do-copy-or-rename-file-via-buffer
+ op filename newname keep-date))))
+
+ (t
+ ;; One of them must be a Tramp file.
+ (error "Tramp implementation says this cannot happen")))
+
+ ;; Handle `preserve-selinux-context'.
+ (when context (apply 'set-file-selinux-context (list newname context)))
+
+ ;; In case of `rename', we must flush the cache of the source file.
+ (when (and t1 (eq op 'rename))
+ (with-parsed-tramp-file-name filename v1
+ (tramp-flush-file-property v1 (file-name-directory localname))
+ (tramp-flush-file-property v1 localname)))
+
+ ;; When newname did exist, we have wrong cached values.
+ (when t2
+ (with-parsed-tramp-file-name newname v2
+ (tramp-flush-file-property v2 (file-name-directory localname))
+ (tramp-flush-file-property v2 localname)))))))
+
+(defun tramp-do-copy-or-rename-file-via-buffer (op filename newname keep-date)
+ "Use an Emacs buffer to copy or rename a file.
+First arg OP is either `copy' or `rename' and indicates the operation.
+FILENAME is the source file, NEWNAME the target file.
+KEEP-DATE is non-nil if NEWNAME should have the same timestamp as FILENAME."
+ (with-temp-buffer
+ ;; We must disable multibyte, because binary data shall not be
+ ;; converted.
+ (set-buffer-multibyte nil)
+ (let ((coding-system-for-read 'binary)
+ (jka-compr-inhibit t))
+ (insert-file-contents-literally filename))
+ ;; We don't want the target file to be compressed, so we let-bind
+ ;; `jka-compr-inhibit' to t.
+ (let ((coding-system-for-write 'binary)
+ (jka-compr-inhibit t))
+ (write-region (point-min) (point-max) newname)))
+ ;; KEEP-DATE handling.
+ (when keep-date (set-file-times newname (nth 5 (file-attributes filename))))
+ ;; Set the mode.
+ (set-file-modes newname (tramp-default-file-modes filename))
+ ;; If the operation was `rename', delete the original file.
+ (unless (eq op 'copy) (delete-file filename)))
+
+(defun tramp-do-copy-or-rename-file-directly
+ (op filename newname ok-if-already-exists keep-date preserve-uid-gid)
+ "Invokes `cp' or `mv' on the remote system.
+OP must be one of `copy' or `rename', indicating `cp' or `mv',
+respectively. FILENAME specifies the file to copy or rename,
+NEWNAME is the name of the new file (for copy) or the new name of
+the file (for rename). Both files must reside on the same host.
+KEEP-DATE means to make sure that NEWNAME has the same timestamp
+as FILENAME. PRESERVE-UID-GID, when non-nil, instructs to keep
+the uid and gid from FILENAME."
+ (let ((t1 (tramp-tramp-file-p filename))
+ (t2 (tramp-tramp-file-p newname))
+ (file-times (nth 5 (file-attributes filename)))
+ (file-modes (tramp-default-file-modes filename)))
+ (with-parsed-tramp-file-name (if t1 filename newname) nil
+ (let* ((cmd (cond ((and (eq op 'copy) preserve-uid-gid) "cp -f -p")
+ ((eq op 'copy) "cp -f")
+ ((eq op 'rename) "mv -f")
+ (t (tramp-error
+ v 'file-error
+ "Unknown operation `%s', must be `copy' or `rename'"
+ op))))
+ (localname1
+ (if t1
+ (tramp-file-name-handler 'file-remote-p filename 'localname)
+ filename))
+ (localname2
+ (if t2
+ (tramp-file-name-handler 'file-remote-p newname 'localname)
+ newname))
+ (prefix (file-remote-p (if t1 filename newname)))
+ cmd-result)
+
+ (cond
+ ;; Both files are on a remote host, with same user.
+ ((and t1 t2)
+ (setq cmd-result
+ (tramp-send-command-and-check
+ v (format "%s %s %s" cmd
+ (tramp-shell-quote-argument localname1)
+ (tramp-shell-quote-argument localname2))))
+ (with-current-buffer (tramp-get-buffer v)
+ (goto-char (point-min))
+ (unless
+ (or
+ (and keep-date
+ ;; Mask cp -f error.
+ (re-search-forward
+ tramp-operation-not-permitted-regexp nil t))
+ cmd-result)
+ (tramp-error-with-buffer
+ nil v 'file-error
+ "Copying directly failed, see buffer `%s' for details."
+ (buffer-name)))))
+
+ ;; We are on the local host.
+ ((or t1 t2)
+ (cond
+ ;; We can do it directly.
+ ((let (file-name-handler-alist)
+ (and (file-readable-p localname1)
+ (file-writable-p (file-name-directory localname2))
+ (or (file-directory-p localname2)
+ (file-writable-p localname2))))
+ (if (eq op 'copy)
+ (tramp-compat-copy-file
+ localname1 localname2 ok-if-already-exists
+ keep-date preserve-uid-gid)
+ (tramp-run-real-handler
+ 'rename-file (list localname1 localname2 ok-if-already-exists))))
+
+ ;; We can do it directly with `tramp-send-command'
+ ((and (file-readable-p (concat prefix localname1))
+ (file-writable-p
+ (file-name-directory (concat prefix localname2)))
+ (or (file-directory-p (concat prefix localname2))
+ (file-writable-p (concat prefix localname2))))
+ (tramp-do-copy-or-rename-file-directly
+ op (concat prefix localname1) (concat prefix localname2)
+ ok-if-already-exists keep-date t)
+ ;; We must change the ownership to the local user.
+ (tramp-set-file-uid-gid
+ (concat prefix localname2)
+ (tramp-get-local-uid 'integer)
+ (tramp-get-local-gid 'integer)))
+
+ ;; We need a temporary file in between.
+ (t
+ ;; Create the temporary file.
+ (let ((tmpfile (tramp-compat-make-temp-file localname1)))
+ (unwind-protect
+ (progn
+ (cond
+ (t1
+ (tramp-barf-unless-okay
+ v (format
+ "%s %s %s" cmd
+ (tramp-shell-quote-argument localname1)
+ (tramp-shell-quote-argument tmpfile))
+ "Copying directly failed, see buffer `%s' for details."
+ (tramp-get-buffer v))
+ ;; We must change the ownership as remote user.
+ ;; Since this does not work reliable, we also
+ ;; give read permissions.
+ (set-file-modes
+ (concat prefix tmpfile)
+ (tramp-compat-octal-to-decimal "0777"))
+ (tramp-set-file-uid-gid
+ (concat prefix tmpfile)
+ (tramp-get-local-uid 'integer)
+ (tramp-get-local-gid 'integer)))
+ (t2
+ (if (eq op 'copy)
+ (tramp-compat-copy-file
+ localname1 tmpfile t
+ keep-date preserve-uid-gid)
+ (tramp-run-real-handler
+ 'rename-file
+ (list localname1 tmpfile t)))
+ ;; We must change the ownership as local user.
+ ;; Since this does not work reliable, we also
+ ;; give read permissions.
+ (set-file-modes
+ tmpfile (tramp-compat-octal-to-decimal "0777"))
+ (tramp-set-file-uid-gid
+ tmpfile
+ (tramp-get-remote-uid v 'integer)
+ (tramp-get-remote-gid v 'integer))))
+
+ ;; Move the temporary file to its destination.
+ (cond
+ (t2
+ (tramp-barf-unless-okay
+ v (format
+ "cp -f -p %s %s"
+ (tramp-shell-quote-argument tmpfile)
+ (tramp-shell-quote-argument localname2))
+ "Copying directly failed, see buffer `%s' for details."
+ (tramp-get-buffer v)))
+ (t1
+ (tramp-run-real-handler
+ 'rename-file
+ (list tmpfile localname2 ok-if-already-exists)))))
+
+ ;; Save exit.
+ (ignore-errors (delete-file tmpfile)))))))))
+
+ ;; Set the time and mode. Mask possible errors.
+ (ignore-errors
+ (when keep-date
+ (set-file-times newname file-times)
+ (set-file-modes newname file-modes))))))
+
+(defun tramp-do-copy-or-rename-file-out-of-band (op filename newname keep-date)
+ "Invoke rcp program to copy.
+The method used must be an out-of-band method."
+ (let* ((t1 (tramp-tramp-file-p filename))
+ (t2 (tramp-tramp-file-p newname))
+ (orig-vec (tramp-dissect-file-name (if t1 filename newname)))
+ copy-program copy-args copy-env copy-keep-date port spec
+ source target)
+
+ (with-parsed-tramp-file-name (if t1 filename newname) nil
+ (if (and t1 t2)
+
+ ;; Both are Tramp files. We shall optimize it, when the
+ ;; methods for filename and newname are the same.
+ (let* ((dir-flag (file-directory-p filename))
+ (tmpfile (tramp-compat-make-temp-file localname dir-flag)))
+ (if dir-flag
+ (setq tmpfile
+ (expand-file-name
+ (file-name-nondirectory newname) tmpfile)))
+ (unwind-protect
+ (progn
+ (tramp-do-copy-or-rename-file-out-of-band
+ op filename tmpfile keep-date)
+ (tramp-do-copy-or-rename-file-out-of-band
+ 'rename tmpfile newname keep-date))
+ ;; Save exit.
+ (ignore-errors
+ (if dir-flag
+ (tramp-compat-delete-directory
+ (expand-file-name ".." tmpfile) 'recursive)
+ (delete-file tmpfile)))))
+
+ ;; Set variables for computing the prompt for reading
+ ;; password.
+ (setq tramp-current-method (tramp-file-name-method v)
+ tramp-current-user (tramp-file-name-user v)
+ tramp-current-host (tramp-file-name-host v))
+
+ ;; Expand hops. Might be necessary for gateway methods.
+ (setq v (car (tramp-compute-multi-hops v)))
+ (aset v 3 localname)
+
+ ;; Check which ones of source and target are Tramp files.
+ (setq source (if t1 (tramp-make-copy-program-file-name v) filename)
+ target (funcall
+ (if (and (file-directory-p filename)
+ (string-equal
+ (file-name-nondirectory filename)
+ (file-name-nondirectory newname)))
+ 'file-name-directory
+ 'identity)
+ (if t2 (tramp-make-copy-program-file-name v) newname)))
+
+ ;; Check for port number. Until now, there's no need for handling
+ ;; like method, user, host.
+ (setq host (tramp-file-name-real-host v)
+ port (tramp-file-name-port v)
+ port (or (and port (number-to-string port)) ""))
+
+ ;; Compose copy command.
+ (setq spec (format-spec-make
+ ?h host ?u user ?p port
+ ?t (tramp-get-connection-property
+ (tramp-get-connection-process v) "temp-file" "")
+ ?k (if keep-date " " ""))
+ copy-program (tramp-get-method-parameter
+ method 'tramp-copy-program)
+ copy-keep-date (tramp-get-method-parameter
+ method 'tramp-copy-keep-date)
+ copy-args
+ (delete
+ ;; " " has either been a replacement of "%k" (when
+ ;; keep-date argument is non-nil), or a replacemtent
+ ;; for the whole keep-date sublist.
+ " "
+ (dolist
+ (x
+ (tramp-get-method-parameter method 'tramp-copy-args)
+ copy-args)
+ (setq copy-args
+ (append
+ copy-args
+ (let ((y (mapcar (lambda (z) (format-spec z spec)) x)))
+ (if (zerop (length (car y))) '(" ") y))))))
+ copy-env
+ (delq
+ nil
+ (mapcar
+ (lambda (x)
+ (setq x (mapcar (lambda (y) (format-spec y spec)) x))
+ (unless (member "" x) (mapconcat 'identity x " ")))
+ (tramp-get-method-parameter method 'tramp-copy-env))))
+
+ ;; Check for program.
+ (when (and (fboundp 'executable-find)
+ (not (let ((default-directory
+ (tramp-compat-temporary-file-directory)))
+ (executable-find copy-program))))
+ (tramp-error
+ v 'file-error "Cannot find copy program: %s" copy-program))
+
+ (with-temp-buffer
+ (unwind-protect
+ ;; The default directory must be remote.
+ (let ((default-directory
+ (file-name-directory (if t1 filename newname)))
+ (process-environment (copy-sequence process-environment)))
+ ;; Set the transfer process properties.
+ (tramp-set-connection-property
+ v "process-name" (buffer-name (current-buffer)))
+ (tramp-set-connection-property
+ v "process-buffer" (current-buffer))
+ (while copy-env
+ (tramp-message
+ orig-vec 5 "%s=\"%s\"" (car copy-env) (cadr copy-env))
+ (setenv (pop copy-env) (pop copy-env)))
+
+ ;; Use an asynchronous process. By this, password can
+ ;; be handled. The default directory must be local, in
+ ;; order to apply the correct `copy-program'. We don't
+ ;; set a timeout, because the copying of large files can
+ ;; last longer than 60 secs.
+ (let ((p (let ((default-directory
+ (tramp-compat-temporary-file-directory)))
+ (apply 'start-process
+ (tramp-get-connection-name v)
+ (tramp-get-connection-buffer v)
+ copy-program
+ (append copy-args (list source target))))))
+ (tramp-message
+ orig-vec 6 "%s"
+ (mapconcat 'identity (process-command p) " "))
+ (tramp-compat-set-process-query-on-exit-flag p nil)
+ (tramp-process-actions p v tramp-actions-copy-out-of-band)))
+
+ ;; Reset the transfer process properties.
+ (tramp-message orig-vec 6 "%s" (buffer-string))
+ (tramp-set-connection-property v "process-name" nil)
+ (tramp-set-connection-property v "process-buffer" nil)))
+
+ ;; Handle KEEP-DATE argument.
+ (when (and keep-date (not copy-keep-date))
+ (set-file-times newname (nth 5 (file-attributes filename))))
+
+ ;; Set the mode.
+ (unless (and keep-date copy-keep-date)
+ (ignore-errors
+ (set-file-modes newname (tramp-default-file-modes filename)))))
+
+ ;; If the operation was `rename', delete the original file.
+ (unless (eq op 'copy)
+ (if (file-regular-p filename)
+ (delete-file filename)
+ (tramp-compat-delete-directory filename 'recursive))))))
+
+(defun tramp-sh-handle-make-directory (dir &optional parents)
+ "Like `make-directory' for Tramp files."
+ (setq dir (expand-file-name dir))
+ (with-parsed-tramp-file-name dir nil
+ (tramp-flush-directory-property v (file-name-directory localname))
+ (save-excursion
+ (tramp-barf-unless-okay
+ v (format "%s %s"
+ (if parents "mkdir -p" "mkdir")
+ (tramp-shell-quote-argument localname))
+ "Couldn't make directory %s" dir))))
+
+(defun tramp-sh-handle-delete-directory (directory &optional recursive)
+ "Like `delete-directory' for Tramp files."
+ (setq directory (expand-file-name directory))
+ (with-parsed-tramp-file-name directory nil
+ (tramp-flush-file-property v (file-name-directory localname))
+ (tramp-flush-directory-property v localname)
+ (tramp-barf-unless-okay
+ v (format "%s %s"
+ (if recursive "rm -rf" "rmdir")
+ (tramp-shell-quote-argument localname))
+ "Couldn't delete %s" directory)))
+
+(defun tramp-sh-handle-delete-file (filename &optional trash)
+ "Like `delete-file' for Tramp files."
+ (setq filename (expand-file-name filename))
+ (with-parsed-tramp-file-name filename nil
+ (tramp-flush-file-property v (file-name-directory localname))
+ (tramp-flush-file-property v localname)
+ (tramp-barf-unless-okay
+ v (format "%s %s"
+ (or (and trash (tramp-get-remote-trash v)) "rm -f")
+ (tramp-shell-quote-argument localname))
+ "Couldn't delete %s" filename)))
+
+;; Dired.
+
+;; CCC: This does not seem to be enough. Something dies when
+;; we try and delete two directories under Tramp :/
+(defun tramp-sh-handle-dired-recursive-delete-directory (filename)
+ "Recursively delete the directory given.
+This is like `dired-recursive-delete-directory' for Tramp files."
+ (with-parsed-tramp-file-name filename nil
+ ;; Run a shell command 'rm -r <localname>'
+ ;; Code shamelessly stolen from the dired implementation and, um, hacked :)
+ (unless (file-exists-p filename)
+ (tramp-error v 'file-error "No such directory: %s" filename))
+ ;; Which is better, -r or -R? (-r works for me <daniel@danann.net>)
+ (tramp-send-command
+ v
+ (format "rm -rf %s" (tramp-shell-quote-argument localname))
+ ;; Don't read the output, do it explicitely.
+ nil t)
+ ;; Wait for the remote system to return to us...
+ ;; This might take a while, allow it plenty of time.
+ (tramp-wait-for-output (tramp-get-connection-process v) 120)
+ ;; Make sure that it worked...
+ (tramp-flush-file-property v (file-name-directory localname))
+ (tramp-flush-directory-property v localname)
+ (and (file-exists-p filename)
+ (tramp-error
+ v 'file-error "Failed to recursively delete %s" filename))))
+
+(defun tramp-sh-handle-dired-compress-file (file &rest ok-flag)
+ "Like `dired-compress-file' for Tramp files."
+ ;; OK-FLAG is valid for XEmacs only, but not implemented.
+ ;; Code stolen mainly from dired-aux.el.
+ (with-parsed-tramp-file-name file nil
+ (tramp-flush-file-property v localname)
+ (save-excursion
+ (let ((suffixes
+ (if (not (featurep 'xemacs))
+ ;; Emacs case
+ (symbol-value 'dired-compress-file-suffixes)
+ ;; XEmacs has `dired-compression-method-alist', which is
+ ;; transformed into `dired-compress-file-suffixes' structure.
+ (mapcar
+ (lambda (x)
+ (list (concat (regexp-quote (nth 1 x)) "\\'")
+ nil
+ (mapconcat 'identity (nth 3 x) " ")))
+ (symbol-value 'dired-compression-method-alist))))
+ suffix)
+ ;; See if any suffix rule matches this file name.
+ (while suffixes
+ (let (case-fold-search)
+ (if (string-match (car (car suffixes)) localname)
+ (setq suffix (car suffixes) suffixes nil))
+ (setq suffixes (cdr suffixes))))
+
+ (cond ((file-symlink-p file)
+ nil)
+ ((and suffix (nth 2 suffix))
+ ;; We found an uncompression rule.
+ (with-progress-reporter v 0 (format "Uncompressing %s" file)
+ (when (tramp-send-command-and-check
+ v (concat (nth 2 suffix) " "
+ (tramp-shell-quote-argument localname)))
+ ;; `dired-remove-file' is not defined in XEmacs.
+ (tramp-compat-funcall 'dired-remove-file file)
+ (string-match (car suffix) file)
+ (concat (substring file 0 (match-beginning 0))))))
+ (t
+ ;; We don't recognize the file as compressed, so compress it.
+ ;; Try gzip.
+ (with-progress-reporter v 0 (format "Compressing %s" file)
+ (when (tramp-send-command-and-check
+ v (concat "gzip -f "
+ (tramp-shell-quote-argument localname)))
+ ;; `dired-remove-file' is not defined in XEmacs.
+ (tramp-compat-funcall 'dired-remove-file file)
+ (cond ((file-exists-p (concat file ".gz"))
+ (concat file ".gz"))
+ ((file-exists-p (concat file ".z"))
+ (concat file ".z"))
+ (t nil))))))))))
+
+(defun tramp-sh-handle-insert-directory
+ (filename switches &optional wildcard full-directory-p)
+ "Like `insert-directory' for Tramp files."
+ (setq filename (expand-file-name filename))
+ (with-parsed-tramp-file-name filename nil
+ (if (and (featurep 'ls-lisp)
+ (not (symbol-value 'ls-lisp-use-insert-directory-program)))
+ (tramp-run-real-handler
+ 'insert-directory (list filename switches wildcard full-directory-p))
+ (when (stringp switches)
+ (setq switches (split-string switches)))
+ (when (and (member "--dired" switches)
+ (not (tramp-get-ls-command-with-dired v)))
+ (setq switches (delete "--dired" switches)))
+ (when wildcard
+ (setq wildcard (tramp-run-real-handler
+ 'file-name-nondirectory (list localname)))
+ (setq localname (tramp-run-real-handler
+ 'file-name-directory (list localname))))
+ (unless full-directory-p
+ (setq switches (add-to-list 'switches "-d" 'append)))
+ (setq switches (mapconcat 'tramp-shell-quote-argument switches " "))
+ (when wildcard
+ (setq switches (concat switches " " wildcard)))
+ (tramp-message
+ v 4 "Inserting directory `ls %s %s', wildcard %s, fulldir %s"
+ switches filename (if wildcard "yes" "no")
+ (if full-directory-p "yes" "no"))
+ ;; If `full-directory-p', we just say `ls -l FILENAME'.
+ ;; Else we chdir to the parent directory, then say `ls -ld BASENAME'.
+ (if full-directory-p
+ (tramp-send-command
+ v
+ (format "%s %s %s 2>/dev/null"
+ (tramp-get-ls-command v)
+ switches
+ (if wildcard
+ localname
+ (tramp-shell-quote-argument (concat localname ".")))))
+ (tramp-barf-unless-okay
+ v
+ (format "cd %s" (tramp-shell-quote-argument
+ (tramp-run-real-handler
+ 'file-name-directory (list localname))))
+ "Couldn't `cd %s'"
+ (tramp-shell-quote-argument
+ (tramp-run-real-handler 'file-name-directory (list localname))))
+ (tramp-send-command
+ v
+ (format "%s %s %s"
+ (tramp-get-ls-command v)
+ switches
+ (if (or wildcard
+ (zerop (length
+ (tramp-run-real-handler
+ 'file-name-nondirectory (list localname)))))
+ ""
+ (tramp-shell-quote-argument
+ (tramp-run-real-handler
+ 'file-name-nondirectory (list localname)))))))
+ (let ((beg (point)))
+ ;; We cannot use `insert-buffer-substring' because the Tramp
+ ;; buffer changes its contents before insertion due to calling
+ ;; `expand-file' and alike.
+ (insert
+ (with-current-buffer (tramp-get-buffer v)
+ (buffer-string)))
+
+ ;; Check for "--dired" output.
+ (forward-line -2)
+ (when (looking-at "//SUBDIRED//")
+ (forward-line -1))
+ (when (looking-at "//DIRED//\\s-+")
+ (let ((databeg (match-end 0))
+ (end (point-at-eol)))
+ ;; Now read the numeric positions of file names.
+ (goto-char databeg)
+ (while (< (point) end)
+ (let ((start (+ beg (read (current-buffer))))
+ (end (+ beg (read (current-buffer)))))
+ (if (memq (char-after end) '(?\n ?\ ))
+ ;; End is followed by \n or by " -> ".
+ (put-text-property start end 'dired-filename t))))))
+ ;; Remove trailing lines.
+ (goto-char (point-at-bol))
+ (while (looking-at "//")
+ (forward-line 1)
+ (delete-region (match-beginning 0) (point)))
+
+ ;; The inserted file could be from somewhere else.
+ (when (and (not wildcard) (not full-directory-p))
+ (goto-char (point-max))
+ (when (file-symlink-p filename)
+ (goto-char (search-backward "->" beg 'noerror)))
+ (search-backward
+ (if (zerop (length (file-name-nondirectory filename)))
+ "."
+ (file-name-nondirectory filename))
+ beg 'noerror)
+ (replace-match (file-relative-name filename) t))
+
+ (goto-char (point-max))))))
+
+;; Canonicalization of file names.
+
+(defun tramp-sh-handle-expand-file-name (name &optional dir)
+ "Like `expand-file-name' for Tramp files.
+If the localname part of the given filename starts with \"/../\" then
+the result will be a local, non-Tramp, filename."
+ ;; If DIR is not given, use DEFAULT-DIRECTORY or "/".
+ (setq dir (or dir default-directory "/"))
+ ;; Unless NAME is absolute, concat DIR and NAME.
+ (unless (file-name-absolute-p name)
+ (setq name (concat (file-name-as-directory dir) name)))
+ ;; If NAME is not a Tramp file, run the real handler.
+ (if (not (tramp-connectable-p name))
+ (tramp-run-real-handler 'expand-file-name (list name nil))
+ ;; Dissect NAME.
+ (with-parsed-tramp-file-name name nil
+ (unless (tramp-run-real-handler 'file-name-absolute-p (list localname))
+ (setq localname (concat "~/" localname)))
+ ;; Tilde expansion if necessary. This needs a shell which
+ ;; groks tilde expansion! The function `tramp-find-shell' is
+ ;; supposed to find such a shell on the remote host. Please
+ ;; tell me about it when this doesn't work on your system.
+ (when (string-match "\\`\\(~[^/]*\\)\\(.*\\)\\'" localname)
+ (let ((uname (match-string 1 localname))
+ (fname (match-string 2 localname)))
+ ;; We cannot simply apply "~/", because under sudo "~/" is
+ ;; expanded to the local user home directory but to the
+ ;; root home directory. On the other hand, using always
+ ;; the default user name for tilde expansion is not
+ ;; appropriate either, because ssh and companions might
+ ;; use a user name from the config file.
+ (when (and (string-equal uname "~")
+ (string-match "\\`su\\(do\\)?\\'" method))
+ (setq uname (concat uname user)))
+ (setq uname
+ (with-connection-property v uname
+ (tramp-send-command
+ v (format "cd %s; pwd" (tramp-shell-quote-argument uname)))
+ (with-current-buffer (tramp-get-buffer v)
+ (goto-char (point-min))
+ (buffer-substring (point) (point-at-eol)))))
+ (setq localname (concat uname fname))))
+ ;; There might be a double slash, for example when "~/"
+ ;; expands to "/". Remove this.
+ (while (string-match "//" localname)
+ (setq localname (replace-match "/" t t localname)))
+ ;; No tilde characters in file name, do normal
+ ;; `expand-file-name' (this does "/./" and "/../"). We bind
+ ;; `directory-sep-char' here for XEmacs on Windows, which would
+ ;; otherwise use backslash. `default-directory' is bound,
+ ;; because on Windows there would be problems with UNC shares or
+ ;; Cygwin mounts.
+ (let ((directory-sep-char ?/)
+ (default-directory (tramp-compat-temporary-file-directory)))
+ (tramp-make-tramp-file-name
+ method user host
+ (tramp-drop-volume-letter
+ (tramp-run-real-handler
+ 'expand-file-name (list localname))))))))
+
+;;; Remote commands:
+
+(defun tramp-sh-handle-executable-find (command)
+ "Like `executable-find' for Tramp files."
+ (with-parsed-tramp-file-name default-directory nil
+ (tramp-find-executable v command (tramp-get-remote-path v) t)))
+
+(defun tramp-process-sentinel (proc event)
+ "Flush file caches."
+ (unless (memq (process-status proc) '(run open))
+ (let ((vec (tramp-get-connection-property proc "vector" nil)))
+ (when vec
+ (tramp-message vec 5 "Sentinel called: `%s' `%s'" proc event)
+ (tramp-flush-directory-property vec "")))))
+
+;; We use BUFFER also as connection buffer during setup. Because of
+;; this, its original contents must be saved, and restored once
+;; connection has been setup.
+(defun tramp-sh-handle-start-file-process (name buffer program &rest args)
+ "Like `start-file-process' for Tramp files."
+ (with-parsed-tramp-file-name default-directory nil
+ ;; When PROGRAM is nil, we just provide a tty.
+ (let ((command
+ (when (stringp program)
+ (format "cd %s; exec %s"
+ (tramp-shell-quote-argument localname)
+ (mapconcat 'tramp-shell-quote-argument
+ (cons program args) " "))))
+ (tramp-process-connection-type
+ (or (null program) tramp-process-connection-type))
+ (bmp (and (buffer-live-p buffer) (buffer-modified-p buffer)))
+ (name1 name)
+ (i 0))
+ (unwind-protect
+ (save-excursion
+ (save-restriction
+ (unless buffer
+ ;; BUFFER can be nil. We use a temporary buffer.
+ (setq buffer (generate-new-buffer tramp-temp-buffer-name)))
+ (while (get-process name1)
+ ;; NAME must be unique as process name.
+ (setq i (1+ i)
+ name1 (format "%s<%d>" name i)))
+ (setq name name1)
+ ;; Set the new process properties.
+ (tramp-set-connection-property v "process-name" name)
+ (tramp-set-connection-property v "process-buffer" buffer)
+ ;; Activate narrowing in order to save BUFFER contents.
+ ;; Clear also the modification time; otherwise we might
+ ;; be interrupted by `verify-visited-file-modtime'.
+ (with-current-buffer (tramp-get-connection-buffer v)
+ (let ((buffer-undo-list t))
+ (clear-visited-file-modtime)
+ (narrow-to-region (point-max) (point-max))
+ (if command
+ ;; Send the command.
+ (tramp-send-command v command nil t) ; nooutput
+ ;; Check, whether a pty is associated.
+ (tramp-maybe-open-connection v)
+ (unless (tramp-compat-process-get
+ (tramp-get-connection-process v) 'remote-tty)
+ (tramp-error
+ v 'file-error
+ "pty association is not supported for `%s'" name)))))
+ (let ((p (tramp-get-connection-process v)))
+ ;; Set sentinel and query flag for this process.
+ (tramp-set-connection-property p "vector" v)
+ (set-process-sentinel p 'tramp-process-sentinel)
+ (tramp-compat-set-process-query-on-exit-flag p t)
+ ;; Return process.
+ p)))
+ ;; Save exit.
+ (with-current-buffer (tramp-get-connection-buffer v)
+ (if (string-match tramp-temp-buffer-name (buffer-name))
+ (progn
+ (set-process-buffer (tramp-get-connection-process v) nil)
+ (kill-buffer (current-buffer)))
+ (set-buffer-modified-p bmp)))
+ (tramp-set-connection-property v "process-name" nil)
+ (tramp-set-connection-property v "process-buffer" nil)))))
+
+(defun tramp-sh-handle-process-file
+ (program &optional infile destination display &rest args)
+ "Like `process-file' for Tramp files."
+ ;; The implementation is not complete yet.
+ (when (and (numberp destination) (zerop destination))
+ (error "Implementation does not handle immediate return"))
+
+ (with-parsed-tramp-file-name default-directory nil
+ (let (command input tmpinput stderr tmpstderr outbuf ret)
+ ;; Compute command.
+ (setq command (mapconcat 'tramp-shell-quote-argument
+ (cons program args) " "))
+ ;; Determine input.
+ (if (null infile)
+ (setq input "/dev/null")
+ (setq infile (expand-file-name infile))
+ (if (tramp-equal-remote default-directory infile)
+ ;; INFILE is on the same remote host.
+ (setq input (with-parsed-tramp-file-name infile nil localname))
+ ;; INFILE must be copied to remote host.
+ (setq input (tramp-make-tramp-temp-file v)
+ tmpinput (tramp-make-tramp-file-name method user host input))
+ (copy-file infile tmpinput t)))
+ (when input (setq command (format "%s <%s" command input)))
+
+ ;; Determine output.
+ (cond
+ ;; Just a buffer.
+ ((bufferp destination)
+ (setq outbuf destination))
+ ;; A buffer name.
+ ((stringp destination)
+ (setq outbuf (get-buffer-create destination)))
+ ;; (REAL-DESTINATION ERROR-DESTINATION)
+ ((consp destination)
+ ;; output.
+ (cond
+ ((bufferp (car destination))
+ (setq outbuf (car destination)))
+ ((stringp (car destination))
+ (setq outbuf (get-buffer-create (car destination))))
+ ((car destination)
+ (setq outbuf (current-buffer))))
+ ;; stderr.
+ (cond
+ ((stringp (cadr destination))
+ (setcar (cdr destination) (expand-file-name (cadr destination)))
+ (if (tramp-equal-remote default-directory (cadr destination))
+ ;; stderr is on the same remote host.
+ (setq stderr (with-parsed-tramp-file-name
+ (cadr destination) nil localname))
+ ;; stderr must be copied to remote host. The temporary
+ ;; file must be deleted after execution.
+ (setq stderr (tramp-make-tramp-temp-file v)
+ tmpstderr (tramp-make-tramp-file-name
+ method user host stderr))))
+ ;; stderr to be discarded.
+ ((null (cadr destination))
+ (setq stderr "/dev/null"))))
+ ;; 't
+ (destination
+ (setq outbuf (current-buffer))))
+ (when stderr (setq command (format "%s 2>%s" command stderr)))
+
+ ;; Send the command. It might not return in time, so we protect
+ ;; it. Call it in a subshell, in order to preserve working
+ ;; directory.
+ (condition-case nil
+ (unwind-protect
+ (setq ret
+ (if (tramp-send-command-and-check
+ v (format "\\cd %s; %s"
+ (tramp-shell-quote-argument localname)
+ command)
+ t t)
+ 0 1))
+ ;; We should show the output anyway.
+ (when outbuf
+ (with-current-buffer outbuf
+ (insert
+ (with-current-buffer (tramp-get-connection-buffer v)
+ (buffer-string))))
+ (when display (display-buffer outbuf))))
+ ;; When the user did interrupt, we should do it also. We use
+ ;; return code -1 as marker.
+ (quit
+ (kill-buffer (tramp-get-connection-buffer v))
+ (setq ret -1))
+ ;; Handle errors.
+ (error
+ (kill-buffer (tramp-get-connection-buffer v))
+ (setq ret 1)))
+
+ ;; Provide error file.
+ (when tmpstderr (rename-file tmpstderr (cadr destination) t))
+
+ ;; Cleanup. We remove all file cache values for the connection,
+ ;; because the remote process could have changed them.
+ (when tmpinput (delete-file tmpinput))
+
+ ;; `process-file-side-effects' has been introduced with GNU
+ ;; Emacs 23.2. If set to `nil', no remote file will be changed
+ ;; by `program'. If it doesn't exist, we assume its default
+ ;; value 't'.
+ (unless (and (boundp 'process-file-side-effects)
+ (not (symbol-value 'process-file-side-effects)))
+ (tramp-flush-directory-property v ""))
+
+ ;; Return exit status.
+ (if (equal ret -1)
+ (keyboard-quit)
+ ret))))
+
+(defun tramp-sh-handle-call-process-region
+ (start end program &optional delete buffer display &rest args)
+ "Like `call-process-region' for Tramp files."
+ (let ((tmpfile (tramp-compat-make-temp-file "")))
+ (write-region start end tmpfile)
+ (when delete (delete-region start end))
+ (unwind-protect
+ (apply 'call-process program tmpfile buffer display args)
+ (delete-file tmpfile))))
+
+(defun tramp-sh-handle-shell-command
+ (command &optional output-buffer error-buffer)
+ "Like `shell-command' for Tramp files."
+ (let* ((asynchronous (string-match "[ \t]*&[ \t]*\\'" command))
+ ;; We cannot use `shell-file-name' and `shell-command-switch',
+ ;; they are variables of the local host.
+ (args (list
+ (tramp-get-method-parameter
+ (tramp-file-name-method
+ (tramp-dissect-file-name default-directory))
+ 'tramp-remote-sh)
+ "-c" (substring command 0 asynchronous)))
+ current-buffer-p
+ (output-buffer
+ (cond
+ ((bufferp output-buffer) output-buffer)
+ ((stringp output-buffer) (get-buffer-create output-buffer))
+ (output-buffer
+ (setq current-buffer-p t)
+ (current-buffer))
+ (t (get-buffer-create
+ (if asynchronous
+ "*Async Shell Command*"
+ "*Shell Command Output*")))))
+ (error-buffer
+ (cond
+ ((bufferp error-buffer) error-buffer)
+ ((stringp error-buffer) (get-buffer-create error-buffer))))
+ (buffer
+ (if (and (not asynchronous) error-buffer)
+ (with-parsed-tramp-file-name default-directory nil
+ (list output-buffer (tramp-make-tramp-temp-file v)))
+ output-buffer))
+ (p (get-buffer-process output-buffer)))
+
+ ;; Check whether there is another process running. Tramp does not
+ ;; support 2 (asynchronous) processes in parallel.
+ (when p
+ (if (yes-or-no-p "A command is running. Kill it? ")
+ (ignore-errors (kill-process p))
+ (error "Shell command in progress")))
+
+ (if current-buffer-p
+ (progn
+ (barf-if-buffer-read-only)
+ (push-mark nil t))
+ (with-current-buffer output-buffer
+ (setq buffer-read-only nil)
+ (erase-buffer)))
+
+ (if (and (not current-buffer-p) (integerp asynchronous))
+ (prog1
+ ;; Run the process.
+ (apply 'start-file-process "*Async Shell*" buffer args)
+ ;; Display output.
+ (pop-to-buffer output-buffer)
+ (setq mode-line-process '(":%s"))
+ (shell-mode))
+
+ (prog1
+ ;; Run the process.
+ (apply 'process-file (car args) nil buffer nil (cdr args))
+ ;; Insert error messages if they were separated.
+ (when (listp buffer)
+ (with-current-buffer error-buffer
+ (insert-file-contents (cadr buffer)))
+ (delete-file (cadr buffer)))
+ (if current-buffer-p
+ ;; This is like exchange-point-and-mark, but doesn't
+ ;; activate the mark. It is cleaner to avoid activation,
+ ;; even though the command loop would deactivate the mark
+ ;; because we inserted text.
+ (goto-char (prog1 (mark t)
+ (set-marker (mark-marker) (point)
+ (current-buffer))))
+ ;; There's some output, display it.
+ (when (with-current-buffer output-buffer (> (point-max) (point-min)))
+ (if (functionp 'display-message-or-buffer)
+ (tramp-compat-funcall 'display-message-or-buffer output-buffer)
+ (pop-to-buffer output-buffer))))))))
+
+(defun tramp-sh-handle-file-local-copy (filename)
+ "Like `file-local-copy' for Tramp files."
+ (with-parsed-tramp-file-name filename nil
+ (unless (file-exists-p filename)
+ (tramp-error
+ v 'file-error
+ "Cannot make local copy of non-existing file `%s'" filename))
+
+ (let* ((size (nth 7 (file-attributes (file-truename filename))))
+ (rem-enc (tramp-get-inline-coding v "remote-encoding" size))
+ (loc-dec (tramp-get-inline-coding v "local-decoding" size))
+ (tmpfile (tramp-compat-make-temp-file filename)))
+
+ (condition-case err
+ (cond
+ ;; `copy-file' handles direct copy and out-of-band methods.
+ ((or (tramp-local-host-p v)
+ (tramp-method-out-of-band-p v size))
+ (copy-file filename tmpfile t t))
+
+ ;; Use inline encoding for file transfer.
+ (rem-enc
+ (save-excursion
+ (with-progress-reporter
+ v 3 (format "Encoding remote file %s" filename)
+ (tramp-barf-unless-okay
+ v (format rem-enc (tramp-shell-quote-argument localname))
+ "Encoding remote file failed"))
+
+ (if (functionp loc-dec)
+ ;; If local decoding is a function, we call it. We
+ ;; must disable multibyte, because
+ ;; `uudecode-decode-region' doesn't handle it
+ ;; correctly.
+ (with-temp-buffer
+ (set-buffer-multibyte nil)
+ (insert-buffer-substring (tramp-get-buffer v))
+ (with-progress-reporter
+ v 3 (format "Decoding remote file %s with function %s"
+ filename loc-dec)
+ (funcall loc-dec (point-min) (point-max))
+ ;; Unset `file-name-handler-alist'. Otherwise,
+ ;; epa-file gets confused.
+ (let (file-name-handler-alist
+ (coding-system-for-write 'binary))
+ (write-region (point-min) (point-max) tmpfile))))
+
+ ;; If tramp-decoding-function is not defined for this
+ ;; method, we invoke tramp-decoding-command instead.
+ (let ((tmpfile2 (tramp-compat-make-temp-file filename)))
+ ;; Unset `file-name-handler-alist'. Otherwise,
+ ;; epa-file gets confused.
+ (let (file-name-handler-alist
+ (coding-system-for-write 'binary))
+ (write-region (point-min) (point-max) tmpfile2))
+ (with-progress-reporter
+ v 3 (format "Decoding remote file %s with command %s"
+ filename loc-dec)
+ (unwind-protect
+ (tramp-call-local-coding-command
+ loc-dec tmpfile2 tmpfile)
+ (delete-file tmpfile2)))))
+
+ ;; Set proper permissions.
+ (set-file-modes tmpfile (tramp-default-file-modes filename))
+ ;; Set local user ownership.
+ (tramp-set-file-uid-gid tmpfile)))
+
+ ;; Oops, I don't know what to do.
+ (t (tramp-error
+ v 'file-error "Wrong method specification for `%s'" method)))
+
+ ;; Error handling.
+ ((error quit)
+ (delete-file tmpfile)
+ (signal (car err) (cdr err))))
+
+ (run-hooks 'tramp-handle-file-local-copy-hook)
+ tmpfile)))
+
+;; This is needed for XEmacs only. Code stolen from files.el.
+(defun tramp-sh-handle-insert-file-contents-literally
+ (filename &optional visit beg end replace)
+ "Like `insert-file-contents-literally' for Tramp files."
+ (let ((format-alist nil)
+ (after-insert-file-functions nil)
+ (coding-system-for-read 'no-conversion)
+ (coding-system-for-write 'no-conversion)
+ (find-buffer-file-type-function
+ (if (fboundp 'find-buffer-file-type)
+ (symbol-function 'find-buffer-file-type)
+ nil))
+ (inhibit-file-name-handlers '(jka-compr-handler image-file-handler))
+ (inhibit-file-name-operation 'insert-file-contents))
+ (unwind-protect
+ (progn
+ (fset 'find-buffer-file-type (lambda (filename) t))
+ (insert-file-contents filename visit beg end replace))
+ ;; Save exit.
+ (if find-buffer-file-type-function
+ (fset 'find-buffer-file-type find-buffer-file-type-function)
+ (fmakunbound 'find-buffer-file-type)))))
+
+(defun tramp-sh-handle-make-auto-save-file-name ()
+ "Like `make-auto-save-file-name' for Tramp files.
+Returns a file name in `tramp-auto-save-directory' for autosaving this file."
+ (let ((tramp-auto-save-directory tramp-auto-save-directory)
+ (buffer-file-name
+ (tramp-subst-strs-in-string
+ '(("_" . "|")
+ ("/" . "_a")
+ (":" . "_b")
+ ("|" . "__")
+ ("[" . "_l")
+ ("]" . "_r"))
+ (buffer-file-name))))
+ ;; File name must be unique. This is ensured with Emacs 22 (see
+ ;; UNIQUIFY element of `auto-save-file-name-transforms'); but for
+ ;; all other cases we must do it ourselves.
+ (when (boundp 'auto-save-file-name-transforms)
+ (mapc
+ (lambda (x)
+ (when (and (string-match (car x) buffer-file-name)
+ (not (car (cddr x))))
+ (setq tramp-auto-save-directory
+ (or tramp-auto-save-directory
+ (tramp-compat-temporary-file-directory)))))
+ (symbol-value 'auto-save-file-name-transforms)))
+ ;; Create directory.
+ (when tramp-auto-save-directory
+ (setq buffer-file-name
+ (expand-file-name buffer-file-name tramp-auto-save-directory))
+ (unless (file-exists-p tramp-auto-save-directory)
+ (make-directory tramp-auto-save-directory t)))
+ ;; Run plain `make-auto-save-file-name'. There might be an advice when
+ ;; it is not a magic file name operation (since Emacs 22).
+ ;; We must deactivate it temporarily.
+ (if (not (ad-is-active 'make-auto-save-file-name))
+ (tramp-run-real-handler 'make-auto-save-file-name nil)
+ ;; else
+ (ad-deactivate 'make-auto-save-file-name)
+ (prog1
+ (tramp-run-real-handler 'make-auto-save-file-name nil)
+ (ad-activate 'make-auto-save-file-name)))))
+
+;; CCC grok LOCKNAME
+(defun tramp-sh-handle-write-region
+ (start end filename &optional append visit lockname confirm)
+ "Like `write-region' for Tramp files."
+ (setq filename (expand-file-name filename))
+ (with-parsed-tramp-file-name filename nil
+ ;; Following part commented out because we don't know what to do about
+ ;; file locking, and it does not appear to be a problem to ignore it.
+ ;; Ange-ftp ignores it, too.
+ ;; (when (and lockname (stringp lockname))
+ ;; (setq lockname (expand-file-name lockname)))
+ ;; (unless (or (eq lockname nil)
+ ;; (string= lockname filename))
+ ;; (error
+ ;; "tramp-sh-handle-write-region: LOCKNAME must be nil or equal FILENAME"))
+
+ ;; XEmacs takes a coding system as the seventh argument, not `confirm'.
+ (when (and (not (featurep 'xemacs)) confirm (file-exists-p filename))
+ (unless (y-or-n-p (format "File %s exists; overwrite anyway? " filename))
+ (tramp-error v 'file-error "File not overwritten")))
+
+ (let ((uid (or (nth 2 (tramp-compat-file-attributes filename 'integer))
+ (tramp-get-remote-uid v 'integer)))
+ (gid (or (nth 3 (tramp-compat-file-attributes filename 'integer))
+ (tramp-get-remote-gid v 'integer))))
+
+ (if (and (tramp-local-host-p v)
+ ;; `file-writable-p' calls `file-expand-file-name'. We
+ ;; cannot use `tramp-run-real-handler' therefore.
+ (let (file-name-handler-alist)
+ (and
+ (file-writable-p (file-name-directory localname))
+ (or (file-directory-p localname)
+ (file-writable-p localname)))))
+ ;; Short track: if we are on the local host, we can run directly.
+ (tramp-run-real-handler
+ 'write-region
+ (list start end localname append 'no-message lockname confirm))
+
+ (let ((modes (save-excursion (tramp-default-file-modes filename)))
+ ;; We use this to save the value of
+ ;; `last-coding-system-used' after writing the tmp
+ ;; file. At the end of the function, we set
+ ;; `last-coding-system-used' to this saved value. This
+ ;; way, any intermediary coding systems used while
+ ;; talking to the remote shell or suchlike won't hose
+ ;; this variable. This approach was snarfed from
+ ;; ange-ftp.el.
+ coding-system-used
+ ;; Write region into a tmp file. This isn't really
+ ;; needed if we use an encoding function, but currently
+ ;; we use it always because this makes the logic
+ ;; simpler.
+ (tmpfile (or tramp-temp-buffer-file-name
+ (tramp-compat-make-temp-file filename))))
+
+ ;; If `append' is non-nil, we copy the file locally, and let
+ ;; the native `write-region' implementation do the job.
+ (when append (copy-file filename tmpfile 'ok))
+
+ ;; We say `no-message' here because we don't want the
+ ;; visited file modtime data to be clobbered from the temp
+ ;; file. We call `set-visited-file-modtime' ourselves later
+ ;; on. We must ensure that `file-coding-system-alist'
+ ;; matches `tmpfile'.
+ (let (file-name-handler-alist
+ (file-coding-system-alist
+ (tramp-find-file-name-coding-system-alist filename tmpfile)))
+ (condition-case err
+ (tramp-run-real-handler
+ 'write-region
+ (list start end tmpfile append 'no-message lockname confirm))
+ ((error quit)
+ (setq tramp-temp-buffer-file-name nil)
+ (delete-file tmpfile)
+ (signal (car err) (cdr err))))
+
+ ;; Now, `last-coding-system-used' has the right value. Remember it.
+ (when (boundp 'last-coding-system-used)
+ (setq coding-system-used
+ (symbol-value 'last-coding-system-used))))
+
+ ;; The permissions of the temporary file should be set. If
+ ;; filename does not exist (eq modes nil) it has been
+ ;; renamed to the backup file. This case `save-buffer'
+ ;; handles permissions.
+ ;; Ensure, that it is still readable.
+ (when modes
+ (set-file-modes
+ tmpfile
+ (logior (or modes 0) (tramp-compat-octal-to-decimal "0400"))))
+
+ ;; This is a bit lengthy due to the different methods
+ ;; possible for file transfer. First, we check whether the
+ ;; method uses an rcp program. If so, we call it.
+ ;; Otherwise, both encoding and decoding command must be
+ ;; specified. However, if the method _also_ specifies an
+ ;; encoding function, then that is used for encoding the
+ ;; contents of the tmp file.
+ (let* ((size (nth 7 (file-attributes tmpfile)))
+ (rem-dec (tramp-get-inline-coding v "remote-decoding" size))
+ (loc-enc (tramp-get-inline-coding v "local-encoding" size)))
+ (cond
+ ;; `copy-file' handles direct copy and out-of-band methods.
+ ((or (tramp-local-host-p v)
+ (tramp-method-out-of-band-p v size))
+ (if (and (not (stringp start))
+ (= (or end (point-max)) (point-max))
+ (= (or start (point-min)) (point-min))
+ (tramp-get-method-parameter
+ method 'tramp-copy-keep-tmpfile))
+ (progn
+ (setq tramp-temp-buffer-file-name tmpfile)
+ (condition-case err
+ ;; We keep the local file for performance
+ ;; reasons, useful for "rsync".
+ (copy-file tmpfile filename t)
+ ((error quit)
+ (setq tramp-temp-buffer-file-name nil)
+ (delete-file tmpfile)
+ (signal (car err) (cdr err)))))
+ (setq tramp-temp-buffer-file-name nil)
+ ;; Don't rename, in order to keep context in SELinux.
+ (unwind-protect
+ (copy-file tmpfile filename t)
+ (delete-file tmpfile))))
+
+ ;; Use inline file transfer.
+ (rem-dec
+ ;; Encode tmpfile.
+ (unwind-protect
+ (with-temp-buffer
+ (set-buffer-multibyte nil)
+ ;; Use encoding function or command.
+ (if (functionp loc-enc)
+ (with-progress-reporter
+ v 3 (format "Encoding region using function `%s'"
+ loc-enc)
+ (let ((coding-system-for-read 'binary))
+ (insert-file-contents-literally tmpfile))
+ ;; The following `let' is a workaround for the
+ ;; base64.el that comes with pgnus-0.84. If
+ ;; both of the following conditions are
+ ;; satisfied, it tries to write to a local
+ ;; file in default-directory, but at this
+ ;; point, default-directory is remote.
+ ;; (`call-process-region' can't write to
+ ;; remote files, it seems.) The file in
+ ;; question is a tmp file anyway.
+ (let ((default-directory
+ (tramp-compat-temporary-file-directory)))
+ (funcall loc-enc (point-min) (point-max))))
+
+ (with-progress-reporter
+ v 3 (format "Encoding region using command `%s'"
+ loc-enc)
+ (unless (zerop (tramp-call-local-coding-command
+ loc-enc tmpfile t))
+ (tramp-error
+ v 'file-error
+ (concat "Cannot write to `%s', "
+ "local encoding command `%s' failed")
+ filename loc-enc))))
+
+ ;; Send buffer into remote decoding command which
+ ;; writes to remote file. Because this happens on
+ ;; the remote host, we cannot use the function.
+ (with-progress-reporter
+ v 3
+ (format "Decoding region into remote file %s" filename)
+ (goto-char (point-max))
+ (unless (bolp) (newline))
+ (tramp-send-command
+ v
+ (format
+ (concat rem-dec " <<'EOF'\n%sEOF")
+ (tramp-shell-quote-argument localname)
+ (buffer-string)))
+ (tramp-barf-unless-okay
+ v nil
+ "Couldn't write region to `%s', decode using `%s' failed"
+ filename rem-dec)
+ ;; When `file-precious-flag' is set, the region is
+ ;; written to a temporary file. Check that the
+ ;; checksum is equal to that from the local tmpfile.
+ (when file-precious-flag
+ (erase-buffer)
+ (and
+ ;; cksum runs locally, if possible.
+ (zerop (tramp-compat-call-process "cksum" tmpfile t))
+ ;; cksum runs remotely.
+ (tramp-send-command-and-check
+ v
+ (format
+ "cksum <%s" (tramp-shell-quote-argument localname)))
+ ;; ... they are different.
+ (not
+ (string-equal
+ (buffer-string)
+ (with-current-buffer (tramp-get-buffer v)
+ (buffer-string))))
+ (tramp-error
+ v 'file-error
+ (concat "Couldn't write region to `%s',"
+ " decode using `%s' failed")
+ filename rem-dec)))))
+
+ ;; Save exit.
+ (delete-file tmpfile)))
+
+ ;; That's not expected.
+ (t
+ (tramp-error
+ v 'file-error
+ (concat "Method `%s' should specify both encoding and "
+ "decoding command or an rcp program")
+ method))))
+
+ ;; Make `last-coding-system-used' have the right value.
+ (when coding-system-used
+ (set 'last-coding-system-used coding-system-used))))
+
+ (tramp-flush-file-property v (file-name-directory localname))
+ (tramp-flush-file-property v localname)
+
+ ;; We must protect `last-coding-system-used', now we have set it
+ ;; to its correct value.
+ (let (last-coding-system-used (need-chown t))
+ ;; Set file modification time.
+ (when (or (eq visit t) (stringp visit))
+ (let ((file-attr (file-attributes filename)))
+ (set-visited-file-modtime
+ ;; We must pass modtime explicitely, because filename can
+ ;; be different from (buffer-file-name), f.e. if
+ ;; `file-precious-flag' is set.
+ (nth 5 file-attr))
+ (when (and (eq (nth 2 file-attr) uid)
+ (eq (nth 3 file-attr) gid))
+ (setq need-chown nil))))
+
+ ;; Set the ownership.
+ (when need-chown
+ (tramp-set-file-uid-gid filename uid gid))
+ (when (or (eq visit t) (null visit) (stringp visit))
+ (tramp-message v 0 "Wrote %s" filename))
+ (run-hooks 'tramp-handle-write-region-hook)))))
+
+(defvar tramp-vc-registered-file-names nil
+ "List used to collect file names, which are checked during `vc-registered'.")
+
+;; VC backends check for the existence of various different special
+;; files. This is very time consuming, because every single check
+;; requires a remote command (the file cache must be invalidated).
+;; Therefore, we apply a kind of optimization. We install the file
+;; name handler `tramp-vc-file-name-handler', which does nothing but
+;; remembers all file names for which `file-exists-p' or
+;; `file-readable-p' has been applied. A first run of `vc-registered'
+;; is performed. Afterwards, a script is applied for all collected
+;; file names, using just one remote command. The result of this
+;; script is used to fill the file cache with actual values. Now we
+;; can reset the file name handlers, and we make a second run of
+;; `vc-registered', which returns the expected result without sending
+;; any other remote command.
+(defun tramp-sh-handle-vc-registered (file)
+ "Like `vc-registered' for Tramp files."
+ (tramp-compat-with-temp-message ""
+ (with-parsed-tramp-file-name file nil
+ (with-progress-reporter
+ v 3 (format "Checking `vc-registered' for %s" file)
+
+ ;; There could be new files, created by the vc backend. We
+ ;; cannot reuse the old cache entries, therefore.
+ (let (tramp-vc-registered-file-names
+ (remote-file-name-inhibit-cache (current-time))
+ (file-name-handler-alist
+ `((,tramp-file-name-regexp . tramp-vc-file-name-handler))))
+
+ ;; Here we collect only file names, which need an operation.
+ (tramp-run-real-handler 'vc-registered (list file))
+ (tramp-message v 10 "\n%s" tramp-vc-registered-file-names)
+
+ ;; Send just one command, in order to fill the cache.
+ (when tramp-vc-registered-file-names
+ (tramp-maybe-send-script
+ v
+ (format tramp-vc-registered-read-file-names
+ (tramp-get-file-exists-command v)
+ (format "%s -r" (tramp-get-test-command v)))
+ "tramp_vc_registered_read_file_names")
+
+ (dolist
+ (elt
+ (tramp-send-command-and-read
+ v
+ (format
+ "tramp_vc_registered_read_file_names <<'EOF'\n%s\nEOF\n"
+ (mapconcat 'tramp-shell-quote-argument
+ tramp-vc-registered-file-names
+ "\n"))))
+
+ (tramp-set-file-property
+ v (car elt) (cadr elt) (cadr (cdr elt))))))
+
+ ;; Second run. Now all `file-exists-p' or `file-readable-p'
+ ;; calls shall be answered from the file cache. We unset
+ ;; `process-file-side-effects' in order to keep the cache when
+ ;; `process-file' calls appear.
+ (let (process-file-side-effects)
+ (tramp-run-real-handler 'vc-registered (list file)))))))
+
+;;;###tramp-autoload
+(defun tramp-sh-file-name-handler (operation &rest args)
+ "Invoke remote-shell Tramp file name handler.
+Fall back to normal file name handler if no Tramp handler exists."
+ (when (and tramp-locked (not tramp-locker))
+ (setq tramp-locked nil)
+ (signal 'file-error (list "Forbidden reentrant call of Tramp")))
+ (let ((tl tramp-locked))
+ (unwind-protect
+ (progn
+ (setq tramp-locked t)
+ (let ((tramp-locker t))
+ (save-match-data
+ (let ((fn (assoc operation tramp-sh-file-name-handler-alist)))
+ (if fn
+ (apply (cdr fn) args)
+ (tramp-run-real-handler operation args))))))
+ (setq tramp-locked tl))))
+
+(defun tramp-vc-file-name-handler (operation &rest args)
+ "Invoke special file name handler, which collects files to be handled."
+ (save-match-data
+ (let ((filename
+ (tramp-replace-environment-variables
+ (apply 'tramp-file-name-for-operation operation args)))
+ (fn (assoc operation tramp-sh-file-name-handler-alist)))
+ (with-parsed-tramp-file-name filename nil
+ (cond
+ ;; That's what we want: file names, for which checks are
+ ;; applied. We assume, that VC uses only `file-exists-p' and
+ ;; `file-readable-p' checks; otherwise we must extend the
+ ;; list. We do not perform any action, but return nil, in
+ ;; order to keep `vc-registered' running.
+ ((and fn (memq operation '(file-exists-p file-readable-p)))
+ (add-to-list 'tramp-vc-registered-file-names localname 'append)
+ nil)
+ ;; Tramp file name handlers like `expand-file-name'. They
+ ;; must still work.
+ (fn
+ (save-match-data (apply (cdr fn) args)))
+ ;; Default file name handlers, we don't care.
+ (t (tramp-run-real-handler operation args)))))))
+
+;;; Internal Functions:
+
+(defun tramp-maybe-send-script (vec script name)
+ "Define in remote shell function NAME implemented as SCRIPT.
+Only send the definition if it has not already been done."
+ (let* ((p (tramp-get-connection-process vec))
+ (scripts (tramp-get-connection-property p "scripts" nil)))
+ (unless (member name scripts)
+ (with-progress-reporter vec 5 (format "Sending script `%s'" name)
+ ;; The script could contain a call of Perl. This is masked with `%s'.
+ (tramp-barf-unless-okay
+ vec
+ (format "%s () {\n%s\n}" name
+ (format script (tramp-get-remote-perl vec)))
+ "Script %s sending failed" name)
+ (tramp-set-connection-property p "scripts" (cons name scripts))))))
+
+(defun tramp-set-auto-save ()
+ (when (and ;; ange-ftp has its own auto-save mechanism
+ (eq (tramp-find-foreign-file-name-handler (buffer-file-name))
+ 'tramp-sh-file-name-handler)
+ auto-save-default)
+ (auto-save-mode 1)))
+(add-hook 'find-file-hooks 'tramp-set-auto-save t)
+(add-hook 'tramp-unload-hook
+ (lambda ()
+ (remove-hook 'find-file-hooks 'tramp-set-auto-save)))
+
+(defun tramp-run-test (switch filename)
+ "Run `test' on the remote system, given a SWITCH and a FILENAME.
+Returns the exit code of the `test' program."
+ (with-parsed-tramp-file-name filename nil
+ (tramp-send-command-and-check
+ v
+ (format
+ "%s %s %s"
+ (tramp-get-test-command v)
+ switch
+ (tramp-shell-quote-argument localname)))))
+
+(defun tramp-run-test2 (format-string file1 file2)
+ "Run `test'-like program on the remote system, given FILE1, FILE2.
+FORMAT-STRING contains the program name, switches, and place holders.
+Returns the exit code of the `test' program. Barfs if the methods,
+hosts, or files, disagree."
+ (unless (tramp-equal-remote file1 file2)
+ (with-parsed-tramp-file-name (if (tramp-tramp-file-p file1) file1 file2) nil
+ (tramp-error
+ v 'file-error
+ "tramp-run-test2 only implemented for same method, user, host")))
+ (with-parsed-tramp-file-name file1 v1
+ (with-parsed-tramp-file-name file1 v2
+ (tramp-send-command-and-check
+ v1
+ (format format-string
+ (tramp-shell-quote-argument v1-localname)
+ (tramp-shell-quote-argument v2-localname))))))
+
+(defun tramp-find-executable
+ (vec progname dirlist &optional ignore-tilde ignore-path)
+ "Searches for PROGNAME in $PATH and all directories mentioned in DIRLIST.
+First arg VEC specifies the connection, PROGNAME is the program
+to search for, and DIRLIST gives the list of directories to
+search. If IGNORE-TILDE is non-nil, directory names starting
+with `~' will be ignored. If IGNORE-PATH is non-nil, searches
+only in DIRLIST.
+
+Returns the absolute file name of PROGNAME, if found, and nil otherwise.
+
+This function expects to be in the right *tramp* buffer."
+ (with-current-buffer (tramp-get-connection-buffer vec)
+ (let (result)
+ ;; Check whether the executable is in $PATH. "which(1)" does not
+ ;; report always a correct error code; therefore we check the
+ ;; number of words it returns.
+ (unless ignore-path
+ (tramp-send-command vec (format "which \\%s | wc -w" progname))
+ (goto-char (point-min))
+ (if (looking-at "^\\s-*1$")
+ (setq result (concat "\\" progname))))
+ (unless result
+ (when ignore-tilde
+ ;; Remove all ~/foo directories from dirlist. In XEmacs,
+ ;; `remove' is in CL, and we want to avoid CL dependencies.
+ (let (newdl d)
+ (while dirlist
+ (setq d (car dirlist))
+ (setq dirlist (cdr dirlist))
+ (unless (char-equal ?~ (aref d 0))
+ (setq newdl (cons d newdl))))
+ (setq dirlist (nreverse newdl))))
+ (tramp-send-command
+ vec
+ (format (concat "while read d; "
+ "do if test -x $d/%s -a -f $d/%s; "
+ "then echo tramp_executable $d/%s; "
+ "break; fi; done <<'EOF'\n"
+ "%s\nEOF")
+ progname progname progname (mapconcat 'identity dirlist "\n")))
+ (goto-char (point-max))
+ (when (search-backward "tramp_executable " nil t)
+ (skip-chars-forward "^ ")
+ (skip-chars-forward " ")
+ (setq result (buffer-substring (point) (point-at-eol)))))
+ result)))
+
+(defun tramp-set-remote-path (vec)
+ "Sets the remote environment PATH to existing directories.
+I.e., for each directory in `tramp-remote-path', it is tested
+whether it exists and if so, it is added to the environment
+variable PATH."
+ (tramp-message vec 5 (format "Setting $PATH environment variable"))
+ (tramp-send-command
+ vec (format "PATH=%s; export PATH"
+ (mapconcat 'identity (tramp-get-remote-path vec) ":"))))
+
+;; ------------------------------------------------------------
+;; -- Communication with external shell --
+;; ------------------------------------------------------------
+
+(defun tramp-find-file-exists-command (vec)
+ "Find a command on the remote host for checking if a file exists.
+Here, we are looking for a command which has zero exit status if the
+file exists and nonzero exit status otherwise."
+ (let ((existing "/")
+ (nonexisting
+ (tramp-shell-quote-argument "/ this file does not exist "))
+ result)
+ ;; The algorithm is as follows: we try a list of several commands.
+ ;; For each command, we first run `$cmd /' -- this should return
+ ;; true, as the root directory always exists. And then we run
+ ;; `$cmd /this\ file\ does\ not\ exist ', hoping that the file indeed
+ ;; does not exist. This should return false. We use the first
+ ;; command we find that seems to work.
+ ;; The list of commands to try is as follows:
+ ;; `ls -d' This works on most systems, but NetBSD 1.4
+ ;; has a bug: `ls' always returns zero exit
+ ;; status, even for files which don't exist.
+ ;; `test -e' Some Bourne shells have a `test' builtin
+ ;; which does not know the `-e' option.
+ ;; `/bin/test -e' For those, the `test' binary on disk normally
+ ;; provides the option. Alas, the binary
+ ;; is sometimes `/bin/test' and sometimes it's
+ ;; `/usr/bin/test'.
+ ;; `/usr/bin/test -e' In case `/bin/test' does not exist.
+ (unless (or
+ (and (setq result (format "%s -e" (tramp-get-test-command vec)))
+ (tramp-send-command-and-check
+ vec (format "%s %s" result existing))
+ (not (tramp-send-command-and-check
+ vec (format "%s %s" result nonexisting))))
+ (and (setq result "/bin/test -e")
+ (tramp-send-command-and-check
+ vec (format "%s %s" result existing))
+ (not (tramp-send-command-and-check
+ vec (format "%s %s" result nonexisting))))
+ (and (setq result "/usr/bin/test -e")
+ (tramp-send-command-and-check
+ vec (format "%s %s" result existing))
+ (not (tramp-send-command-and-check
+ vec (format "%s %s" result nonexisting))))
+ (and (setq result (format "%s -d" (tramp-get-ls-command vec)))
+ (tramp-send-command-and-check
+ vec (format "%s %s" result existing))
+ (not (tramp-send-command-and-check
+ vec (format "%s %s" result nonexisting)))))
+ (tramp-error
+ vec 'file-error "Couldn't find command to check if file exists"))
+ result))
+
+(defun tramp-open-shell (vec shell)
+ "Opens shell SHELL."
+ (with-progress-reporter vec 5 (format "Opening remote shell `%s'" shell)
+ ;; Find arguments for this shell.
+ (let ((tramp-end-of-output tramp-initial-end-of-output)
+ (alist tramp-sh-extra-args)
+ item extra-args)
+ (while (and alist (null extra-args))
+ (setq item (pop alist))
+ (when (string-match (car item) shell)
+ (setq extra-args (cdr item))))
+ (when extra-args (setq shell (concat shell " " extra-args)))
+ (tramp-send-command
+ vec (format "exec env ENV='' PROMPT_COMMAND='' PS1=%s PS2='' PS3='' %s"
+ (shell-quote-argument tramp-end-of-output) shell)
+ t))
+ ;; Setting prompts.
+ (tramp-send-command
+ vec (format "PS1=%s" (shell-quote-argument tramp-end-of-output)) t)
+ (tramp-send-command vec "PS2=''" t)
+ (tramp-send-command vec "PS3=''" t)
+ (tramp-send-command vec "PROMPT_COMMAND=''" t)))
+
+(defun tramp-find-shell (vec)
+ "Opens a shell on the remote host which groks tilde expansion."
+ (unless (tramp-get-connection-property vec "remote-shell" nil)
+ (let (shell)
+ (with-current-buffer (tramp-get-buffer vec)
+ (tramp-send-command vec "echo ~root" t)
+ (cond
+ ((or (string-match "^~root$" (buffer-string))
+ ;; The default shell (ksh93) of OpenSolaris is buggy.
+ (string-equal (tramp-get-connection-property vec "uname" "")
+ "SunOS 5.11"))
+ (setq shell
+ (or (tramp-find-executable
+ vec "bash" (tramp-get-remote-path vec) t t)
+ (tramp-find-executable
+ vec "ksh" (tramp-get-remote-path vec) t t)))
+ (unless shell
+ (tramp-error
+ vec 'file-error
+ "Couldn't find a shell which groks tilde expansion"))
+ (tramp-message
+ vec 5 "Starting remote shell `%s' for tilde expansion" shell)
+ (tramp-open-shell vec shell))
+
+ (t (tramp-message
+ vec 5 "Remote `%s' groks tilde expansion, good"
+ (tramp-set-connection-property
+ vec "remote-shell"
+ (tramp-get-method-parameter
+ (tramp-file-name-method vec) 'tramp-remote-sh)))))))))
+
+;; Utility functions.
+
+(defun tramp-barf-if-no-shell-prompt (proc timeout &rest error-args)
+ "Wait for shell prompt and barf if none appears.
+Looks at process PROC to see if a shell prompt appears in TIMEOUT
+seconds. If not, it produces an error message with the given ERROR-ARGS."
+ (unless
+ (tramp-wait-for-regexp
+ proc timeout
+ (format
+ "\\(%s\\|%s\\)\\'" shell-prompt-pattern tramp-shell-prompt-pattern))
+ (apply 'tramp-error-with-buffer nil proc 'file-error error-args)))
+
+(defun tramp-open-connection-setup-interactive-shell (proc vec)
+ "Set up an interactive shell.
+Mainly sets the prompt and the echo correctly. PROC is the shell
+process to set up. VEC specifies the connection."
+ (let ((tramp-end-of-output tramp-initial-end-of-output))
+ ;; It is useful to set the prompt in the following command because
+ ;; some people have a setting for $PS1 which /bin/sh doesn't know
+ ;; about and thus /bin/sh will display a strange prompt. For
+ ;; example, if $PS1 has "${CWD}" in the value, then ksh will
+ ;; display the current working directory but /bin/sh will display
+ ;; a dollar sign. The following command line sets $PS1 to a sane
+ ;; value, and works under Bourne-ish shells as well as csh-like
+ ;; shells. Daniel Pittman reports that the unusual positioning of
+ ;; the single quotes makes it work under `rc', too. We also unset
+ ;; the variable $ENV because that is read by some sh
+ ;; implementations (eg, bash when called as sh) on startup; this
+ ;; way, we avoid the startup file clobbering $PS1. $PROMPT_COMMAND
+ ;; is another way to set the prompt in /bin/bash, it must be
+ ;; discarded as well.
+ (tramp-open-shell
+ vec
+ (tramp-get-method-parameter (tramp-file-name-method vec) 'tramp-remote-sh))
+
+ ;; Disable echo.
+ (tramp-message vec 5 "Setting up remote shell environment")
+ (tramp-send-command vec "stty -inlcr -echo kill '^U' erase '^H'" t)
+ ;; Check whether the echo has really been disabled. Some
+ ;; implementations, like busybox of embedded GNU/Linux, don't
+ ;; support disabling.
+ (tramp-send-command vec "echo foo" t)
+ (with-current-buffer (process-buffer proc)
+ (goto-char (point-min))
+ (when (looking-at "echo foo")
+ (tramp-set-connection-property proc "remote-echo" t)
+ (tramp-message vec 5 "Remote echo still on. Ok.")
+ ;; Make sure backspaces and their echo are enabled and no line
+ ;; width magic interferes with them.
+ (tramp-send-command vec "stty icanon erase ^H cols 32767" t))))
+
+ (tramp-message vec 5 "Setting shell prompt")
+ (tramp-send-command
+ vec (format "PS1=%s" (shell-quote-argument tramp-end-of-output)) t)
+ (tramp-send-command vec "PS2=''" t)
+ (tramp-send-command vec "PS3=''" t)
+ (tramp-send-command vec "PROMPT_COMMAND=''" t)
+
+ ;; Try to set up the coding system correctly.
+ ;; CCC this can't be the right way to do it. Hm.
+ (tramp-message vec 5 "Determining coding system")
+ (tramp-send-command vec "echo foo ; echo bar" t)
+ (with-current-buffer (process-buffer proc)
+ (goto-char (point-min))
+ (if (featurep 'mule)
+ ;; Use MULE to select the right EOL convention for communicating
+ ;; with the process.
+ (let* ((cs (or (tramp-compat-funcall 'process-coding-system proc)
+ (cons 'undecided 'undecided)))
+ cs-decode cs-encode)
+ (when (symbolp cs) (setq cs (cons cs cs)))
+ (setq cs-decode (car cs))
+ (setq cs-encode (cdr cs))
+ (unless cs-decode (setq cs-decode 'undecided))
+ (unless cs-encode (setq cs-encode 'undecided))
+ (setq cs-encode (tramp-compat-coding-system-change-eol-conversion
+ cs-encode 'unix))
+ (when (search-forward "\r" nil t)
+ (setq cs-decode (tramp-compat-coding-system-change-eol-conversion
+ cs-decode 'dos)))
+ (tramp-compat-funcall
+ 'set-buffer-process-coding-system cs-decode cs-encode)
+ (tramp-message
+ vec 5 "Setting coding system to `%s' and `%s'" cs-decode cs-encode))
+ ;; Look for ^M and do something useful if found.
+ (when (search-forward "\r" nil t)
+ ;; We have found a ^M but cannot frob the process coding system
+ ;; because we're running on a non-MULE Emacs. Let's try
+ ;; stty, instead.
+ (tramp-send-command vec "stty -onlcr" t))))
+
+ (tramp-send-command vec "set +o vi +o emacs" t)
+
+ ;; Check whether the output of "uname -sr" has been changed. If
+ ;; yes, this is a strong indication that we must expire all
+ ;; connection properties. We start again with
+ ;; `tramp-maybe-open-connection', it will be catched there.
+ (tramp-message vec 5 "Checking system information")
+ (let ((old-uname (tramp-get-connection-property vec "uname" nil))
+ (new-uname
+ (tramp-set-connection-property
+ vec "uname"
+ (tramp-send-command-and-read vec "echo \\\"`uname -sr`\\\""))))
+ (when (and (stringp old-uname) (not (string-equal old-uname new-uname)))
+ (with-current-buffer (tramp-get-debug-buffer vec)
+ ;; Keep the debug buffer.
+ (rename-buffer
+ (generate-new-buffer-name tramp-temp-buffer-name) 'unique)
+ (tramp-cleanup-connection vec)
+ (if (= (point-min) (point-max))
+ (kill-buffer nil)
+ (rename-buffer (tramp-debug-buffer-name vec) 'unique))
+ ;; We call `tramp-get-buffer' in order to keep the debug buffer.
+ (tramp-get-buffer vec)
+ (tramp-message
+ vec 3
+ "Connection reset, because remote host changed from `%s' to `%s'"
+ old-uname new-uname)
+ (throw 'uname-changed (tramp-maybe-open-connection vec)))))
+
+ ;; Check whether the remote host suffers from buggy
+ ;; `send-process-string'. This is known for FreeBSD (see comment in
+ ;; `send_process', file process.c). I've tested sending 624 bytes
+ ;; successfully, sending 625 bytes failed. Emacs makes a hack when
+ ;; this host type is detected locally. It cannot handle remote
+ ;; hosts, though.
+ (with-connection-property proc "chunksize"
+ (cond
+ ((and (integerp tramp-chunksize) (> tramp-chunksize 0))
+ tramp-chunksize)
+ (t
+ (tramp-message
+ vec 5 "Checking remote host type for `send-process-string' bug")
+ (if (string-match
+ "^FreeBSD" (tramp-get-connection-property vec "uname" ""))
+ 500 0))))
+
+ ;; Set remote PATH variable.
+ (tramp-set-remote-path vec)
+
+ ;; Search for a good shell before searching for a command which
+ ;; checks if a file exists. This is done because Tramp wants to use
+ ;; "test foo; echo $?" to check if various conditions hold, and
+ ;; there are buggy /bin/sh implementations which don't execute the
+ ;; "echo $?" part if the "test" part has an error. In particular,
+ ;; the OpenSolaris /bin/sh is a problem. There are also other
+ ;; problems with /bin/sh of OpenSolaris, like redirection of stderr
+ ;; in function declarations, or changing HISTFILE in place.
+ ;; Therefore, OpenSolaris' /bin/sh is replaced by bash, when
+ ;; detected.
+ (tramp-find-shell vec)
+
+ ;; Disable unexpected output.
+ (tramp-send-command vec "mesg n; biff n" t)
+
+ ;; IRIX64 bash expands "!" even when in single quotes. This
+ ;; destroys our shell functions, we must disable it. See
+ ;; <http://stackoverflow.com/questions/3291692/irix-bash-shell-expands-expression-in-single-quotes-yet-shouldnt>.
+ (when (string-match "^IRIX64" (tramp-get-connection-property vec "uname" ""))
+ (tramp-send-command vec "set +H" t))
+
+ ;; On BSD-like systems, ?\t is expanded to spaces. Suppress this.
+ (when (string-match "BSD\\|Darwin"
+ (tramp-get-connection-property vec "uname" ""))
+ (tramp-send-command vec "stty -oxtabs" t))
+
+ ;; Set `remote-tty' process property.
+ (ignore-errors
+ (let ((tty (tramp-send-command-and-read vec "echo \\\"`tty`\\\"")))
+ (unless (zerop (length tty))
+ (tramp-compat-process-put proc 'remote-tty tty))))
+
+ ;; Dump stty settings in the traces.
+ (when (>= tramp-verbose 9)
+ (tramp-send-command vec "stty -a" t))
+
+ ;; Set the environment.
+ (tramp-message vec 5 "Setting default environment")
+
+ (let ((env (copy-sequence tramp-remote-process-environment))
+ unset item)
+ (while env
+ (setq item (tramp-compat-split-string (car env) "="))
+ (setcdr item (mapconcat 'identity (cdr item) "="))
+ (if (and (stringp (cdr item)) (not (string-equal (cdr item) "")))
+ (tramp-send-command
+ vec (format "%s=%s; export %s" (car item) (cdr item) (car item)) t)
+ (push (car item) unset))
+ (setq env (cdr env)))
+ (when unset
+ (tramp-send-command
+ vec (format "unset %s" (mapconcat 'identity unset " ")) t))))
+
+;; CCC: We should either implement a Perl version of base64 encoding
+;; and decoding. Then we just use that in the last item. The other
+;; alternative is to use the Perl version of UU encoding. But then
+;; we need a Lisp version of uuencode.
+;;
+;; Old text from documentation of tramp-methods:
+;; Using a uuencode/uudecode inline method is discouraged, please use one
+;; of the base64 methods instead since base64 encoding is much more
+;; reliable and the commands are more standardized between the different
+;; Unix versions. But if you can't use base64 for some reason, please
+;; note that the default uudecode command does not work well for some
+;; Unices, in particular AIX and Irix. For AIX, you might want to use
+;; the following command for uudecode:
+;;
+;; sed '/^begin/d;/^[` ]$/d;/^end/d' | iconv -f uucode -t ISO8859-1
+;;
+;; For Irix, no solution is known yet.
+
+(autoload 'uudecode-decode-region "uudecode")
+
+(defconst tramp-local-coding-commands
+ '((b64 base64-encode-region base64-decode-region)
+ (uu tramp-uuencode-region uudecode-decode-region)
+ (pack
+ "perl -e 'binmode STDIN; binmode STDOUT; print pack(q{u*}, join q{}, <>)'"
+ "perl -e 'binmode STDIN; binmode STDOUT; print unpack(q{u*}, join q{}, <>)'"))
+ "List of local coding commands for inline transfer.
+Each item is a list that looks like this:
+
+\(FORMAT ENCODING DECODING\)
+
+FORMAT is symbol describing the encoding/decoding format. It can be
+`b64' for base64 encoding, `uu' for uu encoding, or `pack' for simple packing.
+
+ENCODING and DECODING can be strings, giving commands, or symbols,
+giving functions. If they are strings, then they can contain
+the \"%s\" format specifier. If that specifier is present, the input
+filename will be put into the command line at that spot. If the
+specifier is not present, the input should be read from standard
+input.
+
+If they are functions, they will be called with two arguments, start
+and end of region, and are expected to replace the region contents
+with the encoded or decoded results, respectively.")
+
+(defconst tramp-remote-coding-commands
+ '((b64 "base64" "base64 -d -i")
+ ;; "-i" is more robust with older base64 from GNU coreutils.
+ ;; However, I don't know whether all base64 versions do supports
+ ;; this option.
+ (b64 "base64" "base64 -d")
+ (b64 "mimencode -b" "mimencode -u -b")
+ (b64 "mmencode -b" "mmencode -u -b")
+ (b64 "recode data..base64" "recode base64..data")
+ (b64 tramp-perl-encode-with-module tramp-perl-decode-with-module)
+ (b64 tramp-perl-encode tramp-perl-decode)
+ (uu "uuencode xxx" "uudecode -o /dev/stdout")
+ (uu "uuencode xxx" "uudecode -o -")
+ (uu "uuencode xxx" "uudecode -p")
+ (uu "uuencode xxx" tramp-uudecode)
+ (pack
+ "perl -e 'binmode STDIN; binmode STDOUT; print pack(q{u*}, join q{}, <>)'"
+ "perl -e 'binmode STDIN; binmode STDOUT; print unpack(q{u*}, join q{}, <>)'"))
+ "List of remote coding commands for inline transfer.
+Each item is a list that looks like this:
+
+\(FORMAT ENCODING DECODING\)
+
+FORMAT is symbol describing the encoding/decoding format. It can be
+`b64' for base64 encoding, `uu' for uu encoding, or `pack' for simple packing.
+
+ENCODING and DECODING can be strings, giving commands, or symbols,
+giving variables. If they are strings, then they can contain
+the \"%s\" format specifier. If that specifier is present, the input
+filename will be put into the command line at that spot. If the
+specifier is not present, the input should be read from standard
+input.
+
+If they are variables, this variable is a string containing a Perl
+implementation for this functionality. This Perl program will be transferred
+to the remote host, and it is available as shell function with the same name.")
+
+(defun tramp-find-inline-encoding (vec)
+ "Find an inline transfer encoding that works.
+Goes through the list `tramp-local-coding-commands' and
+`tramp-remote-coding-commands'."
+ (save-excursion
+ (let ((local-commands tramp-local-coding-commands)
+ (magic "xyzzy")
+ loc-enc loc-dec rem-enc rem-dec litem ritem found)
+ (while (and local-commands (not found))
+ (setq litem (pop local-commands))
+ (catch 'wont-work-local
+ (let ((format (nth 0 litem))
+ (remote-commands tramp-remote-coding-commands))
+ (setq loc-enc (nth 1 litem))
+ (setq loc-dec (nth 2 litem))
+ ;; If the local encoder or decoder is a string, the
+ ;; corresponding command has to work locally.
+ (if (not (stringp loc-enc))
+ (tramp-message
+ vec 5 "Checking local encoding function `%s'" loc-enc)
+ (tramp-message
+ vec 5 "Checking local encoding command `%s' for sanity" loc-enc)
+ (unless (zerop (tramp-call-local-coding-command
+ loc-enc nil nil))
+ (throw 'wont-work-local nil)))
+ (if (not (stringp loc-dec))
+ (tramp-message
+ vec 5 "Checking local decoding function `%s'" loc-dec)
+ (tramp-message
+ vec 5 "Checking local decoding command `%s' for sanity" loc-dec)
+ (unless (zerop (tramp-call-local-coding-command
+ loc-dec nil nil))
+ (throw 'wont-work-local nil)))
+ ;; Search for remote coding commands with the same format
+ (while (and remote-commands (not found))
+ (setq ritem (pop remote-commands))
+ (catch 'wont-work-remote
+ (when (equal format (nth 0 ritem))
+ (setq rem-enc (nth 1 ritem))
+ (setq rem-dec (nth 2 ritem))
+ ;; Check if remote encoding and decoding commands can be
+ ;; called remotely with null input and output. This makes
+ ;; sure there are no syntax errors and the command is really
+ ;; found. Note that we do not redirect stdout to /dev/null,
+ ;; for two reasons: when checking the decoding command, we
+ ;; actually check the output it gives. And also, when
+ ;; redirecting "mimencode" output to /dev/null, then as root
+ ;; it might change the permissions of /dev/null!
+ (when (not (stringp rem-enc))
+ (let ((name (symbol-name rem-enc)))
+ (while (string-match (regexp-quote "-") name)
+ (setq name (replace-match "_" nil t name)))
+ (tramp-maybe-send-script vec (symbol-value rem-enc) name)
+ (setq rem-enc name)))
+ (tramp-message
+ vec 5
+ "Checking remote encoding command `%s' for sanity" rem-enc)
+ (unless (tramp-send-command-and-check
+ vec (format "%s </dev/null" rem-enc) t)
+ (throw 'wont-work-remote nil))
+
+ (when (not (stringp rem-dec))
+ (let ((name (symbol-name rem-dec)))
+ (while (string-match (regexp-quote "-") name)
+ (setq name (replace-match "_" nil t name)))
+ (tramp-maybe-send-script vec (symbol-value rem-dec) name)
+ (setq rem-dec name)))
+ (tramp-message
+ vec 5
+ "Checking remote decoding command `%s' for sanity" rem-dec)
+ (unless (tramp-send-command-and-check
+ vec
+ (format "echo %s | %s | %s" magic rem-enc rem-dec)
+ t)
+ (throw 'wont-work-remote nil))
+
+ (with-current-buffer (tramp-get-buffer vec)
+ (goto-char (point-min))
+ (unless (looking-at (regexp-quote magic))
+ (throw 'wont-work-remote nil)))
+
+ ;; `rem-enc' and `rem-dec' could be a string meanwhile.
+ (setq rem-enc (nth 1 ritem))
+ (setq rem-dec (nth 2 ritem))
+ (setq found t)))))))
+
+ ;; Did we find something?
+ (unless found
+ (tramp-error
+ vec 'file-error "Couldn't find an inline transfer encoding"))
+
+ ;; Set connection properties.
+ (tramp-message vec 5 "Using local encoding `%s'" loc-enc)
+ (tramp-set-connection-property vec "local-encoding" loc-enc)
+ (tramp-message vec 5 "Using local decoding `%s'" loc-dec)
+ (tramp-set-connection-property vec "local-decoding" loc-dec)
+ (tramp-message vec 5 "Using remote encoding `%s'" rem-enc)
+ (tramp-set-connection-property vec "remote-encoding" rem-enc)
+ (tramp-message vec 5 "Using remote decoding `%s'" rem-dec)
+ (tramp-set-connection-property vec "remote-decoding" rem-dec))))
+
+(defun tramp-call-local-coding-command (cmd input output)
+ "Call the local encoding or decoding command.
+If CMD contains \"%s\", provide input file INPUT there in command.
+Otherwise, INPUT is passed via standard input.
+INPUT can also be nil which means `/dev/null'.
+OUTPUT can be a string (which specifies a filename), or t (which
+means standard output and thus the current buffer), or nil (which
+means discard it)."
+ (tramp-compat-call-process
+ tramp-encoding-shell
+ (when (and input (not (string-match "%s" cmd))) input)
+ (if (eq output t) t nil)
+ nil
+ tramp-encoding-command-switch
+ (concat
+ (if (string-match "%s" cmd) (format cmd input) cmd)
+ (if (stringp output) (concat "> " output) ""))))
+
+(defconst tramp-inline-compress-commands
+ '(("gzip" "gzip -d")
+ ("bzip2" "bzip2 -d")
+ ("compress" "compress -d"))
+ "List of compress and decompress commands for inline transfer.
+Each item is a list that looks like this:
+
+\(COMPRESS DECOMPRESS\)
+
+COMPRESS or DECOMPRESS are strings with the respective commands.")
+
+(defun tramp-find-inline-compress (vec)
+ "Find an inline transfer compress command that works.
+Goes through the list `tramp-inline-compress-commands'."
+ (save-excursion
+ (let ((commands tramp-inline-compress-commands)
+ (magic "xyzzy")
+ item compress decompress
+ found)
+ (while (and commands (not found))
+ (catch 'next
+ (setq item (pop commands)
+ compress (nth 0 item)
+ decompress (nth 1 item))
+ (tramp-message
+ vec 5
+ "Checking local compress command `%s', `%s' for sanity"
+ compress decompress)
+ (unless (zerop (tramp-call-local-coding-command
+ (format "echo %s | %s | %s"
+ magic compress decompress) nil nil))
+ (throw 'next nil))
+ (tramp-message
+ vec 5
+ "Checking remote compress command `%s', `%s' for sanity"
+ compress decompress)
+ (unless (tramp-send-command-and-check
+ vec (format "echo %s | %s | %s" magic compress decompress) t)
+ (throw 'next nil))
+ (setq found t)))
+
+ ;; Did we find something?
+ (if found
+ (progn
+ ;; Set connection properties.
+ (tramp-message
+ vec 5 "Using inline transfer compress command `%s'" compress)
+ (tramp-set-connection-property vec "inline-compress" compress)
+ (tramp-message
+ vec 5 "Using inline transfer decompress command `%s'" decompress)
+ (tramp-set-connection-property vec "inline-decompress" decompress))
+
+ (tramp-set-connection-property vec "inline-compress" nil)
+ (tramp-set-connection-property vec "inline-decompress" nil)
+ (tramp-message
+ vec 2 "Couldn't find an inline transfer compress command")))))
+
+(defun tramp-compute-multi-hops (vec)
+ "Expands VEC according to `tramp-default-proxies-alist'.
+Gateway hops are already opened."
+ (let ((target-alist `(,vec))
+ (choices tramp-default-proxies-alist)
+ item proxy)
+
+ ;; Look for proxy hosts to be passed.
+ (while choices
+ (setq item (pop choices)
+ proxy (eval (nth 2 item)))
+ (when (and
+ ;; host
+ (string-match (or (eval (nth 0 item)) "")
+ (or (tramp-file-name-host (car target-alist)) ""))
+ ;; user
+ (string-match (or (eval (nth 1 item)) "")
+ (or (tramp-file-name-user (car target-alist)) "")))
+ (if (null proxy)
+ ;; No more hops needed.
+ (setq choices nil)
+ ;; Replace placeholders.
+ (setq proxy
+ (format-spec
+ proxy
+ (format-spec-make
+ ?u (or (tramp-file-name-user (car target-alist)) "")
+ ?h (or (tramp-file-name-host (car target-alist)) ""))))
+ (with-parsed-tramp-file-name proxy l
+ ;; Add the hop.
+ (add-to-list 'target-alist l)
+ ;; Start next search.
+ (setq choices tramp-default-proxies-alist)))))
+
+ ;; Handle gateways.
+ (when (string-match
+ (format
+ "^\\(%s\\|%s\\)$" tramp-gw-tunnel-method tramp-gw-socks-method)
+ (tramp-file-name-method (car target-alist)))
+ (let ((gw (pop target-alist))
+ (hop (pop target-alist)))
+ ;; Is the method prepared for gateways?
+ (unless (tramp-file-name-port hop)
+ (tramp-error
+ vec 'file-error
+ "Connection `%s' is not supported for gateway access." hop))
+ ;; Open the gateway connection.
+ (add-to-list
+ 'target-alist
+ (vector
+ (tramp-file-name-method hop) (tramp-file-name-user hop)
+ (tramp-compat-funcall 'tramp-gw-open-connection vec gw hop) nil))
+ ;; For the password prompt, we need the correct values.
+ ;; 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)))
+
+ ;; Foreign and out-of-band methods are not supported for multi-hops.
+ (when (cdr target-alist)
+ (setq choices target-alist)
+ (while choices
+ (setq item (pop choices))
+ (when
+ (or
+ (not
+ (tramp-get-method-parameter
+ (tramp-file-name-method item) 'tramp-login-program))
+ (tramp-get-method-parameter
+ (tramp-file-name-method item) 'tramp-copy-program))
+ (tramp-error
+ vec 'file-error
+ "Method `%s' is not supported for multi-hops."
+ (tramp-file-name-method item)))))
+
+ ;; In case the host name is not used for the remote shell
+ ;; command, the user could be misguided by applying a random
+ ;; hostname.
+ (let* ((v (car target-alist))
+ (method (tramp-file-name-method v))
+ (host (tramp-file-name-host v)))
+ (unless
+ (or
+ ;; There are multi-hops.
+ (cdr target-alist)
+ ;; The host name is used for the remote shell command.
+ (member
+ '("%h") (tramp-get-method-parameter method 'tramp-login-args))
+ ;; The host is local. We cannot use `tramp-local-host-p'
+ ;; here, because it opens a connection as well.
+ (string-match tramp-local-host-regexp host))
+ (tramp-error
+ v 'file-error
+ "Host `%s' looks like a remote host, `%s' can only use the local host"
+ host method)))
+
+ ;; Result.
+ target-alist))
+
+(defun tramp-maybe-open-connection (vec)
+ "Maybe open a connection VEC.
+Does not do anything if a connection is already open, but re-opens the
+connection if a previous connection has died for some reason."
+ (catch 'uname-changed
+ (let ((p (tramp-get-connection-process vec))
+ (process-name (tramp-get-connection-property vec "process-name" nil))
+ (process-environment (copy-sequence process-environment)))
+
+ ;; If too much time has passed since last command was sent, look
+ ;; whether process is still alive. If it isn't, kill it. When
+ ;; using ssh, it can sometimes happen that the remote end has
+ ;; hung up but the local ssh client doesn't recognize this until
+ ;; it tries to send some data to the remote end. So that's why
+ ;; we try to send a command from time to time, then look again
+ ;; whether the process is really alive.
+ (condition-case nil
+ (when (and (> (tramp-time-diff
+ (current-time)
+ (tramp-get-connection-property
+ p "last-cmd-time" '(0 0 0)))
+ 60)
+ p (processp p) (memq (process-status p) '(run open)))
+ (tramp-send-command vec "echo are you awake" t t)
+ (unless (and (memq (process-status p) '(run open))
+ (tramp-wait-for-output p 10))
+ ;; The error will be catched locally.
+ (tramp-error vec 'file-error "Awake did fail")))
+ (file-error
+ (tramp-flush-connection-property vec)
+ (tramp-flush-connection-property p)
+ (delete-process p)
+ (setq p nil)))
+
+ ;; New connection must be opened.
+ (unless (and p (processp p) (memq (process-status p) '(run open)))
+
+ ;; We call `tramp-get-buffer' in order to get a debug buffer for
+ ;; messages from the beginning.
+ (tramp-get-buffer vec)
+ (with-progress-reporter
+ vec 3
+ (if (zerop (length (tramp-file-name-user vec)))
+ (format "Opening connection for %s using %s"
+ (tramp-file-name-host vec)
+ (tramp-file-name-method vec))
+ (format "Opening connection for %s@%s using %s"
+ (tramp-file-name-user vec)
+ (tramp-file-name-host vec)
+ (tramp-file-name-method vec)))
+
+ ;; Start new process.
+ (when (and p (processp p))
+ (delete-process p))
+ (setenv "TERM" tramp-terminal-type)
+ (setenv "LC_ALL" "C")
+ (setenv "PROMPT_COMMAND")
+ (setenv "PS1" tramp-initial-end-of-output)
+ (let* ((target-alist (tramp-compute-multi-hops vec))
+ (process-connection-type tramp-process-connection-type)
+ (process-adaptive-read-buffering nil)
+ (coding-system-for-read nil)
+ ;; This must be done in order to avoid our file name handler.
+ (p (let ((default-directory
+ (tramp-compat-temporary-file-directory)))
+ (start-process
+ (tramp-get-connection-name vec)
+ (tramp-get-connection-buffer vec)
+ tramp-encoding-shell))))
+
+ (tramp-message
+ vec 6 "%s" (mapconcat 'identity (process-command p) " "))
+
+ ;; Check whether process is alive.
+ (tramp-compat-set-process-query-on-exit-flag p nil)
+ (tramp-barf-if-no-shell-prompt
+ p 60 "Couldn't find local shell prompt %s" tramp-encoding-shell)
+
+ ;; Now do all the connections as specified.
+ (while target-alist
+ (let* ((hop (car target-alist))
+ (l-method (tramp-file-name-method hop))
+ (l-user (tramp-file-name-user hop))
+ (l-host (tramp-file-name-host hop))
+ (l-port nil)
+ (login-program
+ (tramp-get-method-parameter
+ l-method 'tramp-login-program))
+ (login-args
+ (tramp-get-method-parameter l-method 'tramp-login-args))
+ (async-args
+ (tramp-get-method-parameter l-method 'tramp-async-args))
+ (gw-args
+ (tramp-get-method-parameter l-method 'tramp-gw-args))
+ (gw (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-host gw)))
+ (command login-program)
+ ;; We don't create the temporary file. In fact,
+ ;; it is just a prefix for the ControlPath option
+ ;; of ssh; the real temporary file has another
+ ;; name, and it is created and protected by ssh.
+ ;; It is also removed by ssh, when the connection
+ ;; is closed.
+ (tmpfile
+ (tramp-set-connection-property
+ p "temp-file"
+ (make-temp-name
+ (expand-file-name
+ tramp-temp-name-prefix
+ (tramp-compat-temporary-file-directory)))))
+ spec)
+
+ ;; Add arguments for asynchrononous processes.
+ (when (and process-name async-args)
+ (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)))
+
+ ;; Check for port number. Until now, there's no need
+ ;; for handling like method, user, host.
+ (when (string-match tramp-host-with-port-regexp l-host)
+ (setq l-port (match-string 2 l-host)
+ l-host (match-string 1 l-host)))
+
+ ;; Set variables for computing the prompt for reading
+ ;; password. They can also be derived from a gateway.
+ (setq tramp-current-method (or g-method l-method)
+ tramp-current-user (or g-user l-user)
+ tramp-current-host (or g-host l-host))
+
+ ;; Replace login-args place holders.
+ (setq
+ l-host (or l-host "")
+ l-user (or l-user "")
+ l-port (or l-port "")
+ spec (format-spec-make
+ ?h l-host ?u l-user ?p l-port ?t tmpfile)
+ command
+ (concat
+ ;; We do not want to see the trailing local prompt in
+ ;; `start-file-process'.
+ (unless (memq system-type '(windows-nt)) "exec ")
+ command " "
+ (mapconcat
+ (lambda (x)
+ (setq x (mapcar (lambda (y) (format-spec y spec)) x))
+ (unless (member "" x) (mapconcat 'identity x " ")))
+ login-args " ")
+ ;; Local shell could be a Windows COMSPEC. It
+ ;; doesn't know the ";" syntax, but we must exit
+ ;; always for `start-file-process'. "exec" does not
+ ;; work either.
+ (if (memq system-type '(windows-nt)) " && exit || exit")))
+
+ ;; Send the command.
+ (tramp-message vec 3 "Sending command `%s'" command)
+ (tramp-send-command vec command t t)
+ (tramp-process-actions p vec tramp-actions-before-shell 60)
+ (tramp-message
+ vec 3 "Found remote shell prompt on `%s'" l-host))
+ ;; Next hop.
+ (setq target-alist (cdr target-alist)))
+
+ ;; Make initial shell settings.
+ (tramp-open-connection-setup-interactive-shell p vec)))))))
+
+(defun tramp-send-command (vec command &optional neveropen nooutput)
+ "Send the COMMAND to connection VEC.
+Erases temporary buffer before sending the command. If optional
+arg NEVEROPEN is non-nil, never try to open the connection. This
+is meant to be used from `tramp-maybe-open-connection' only. The
+function waits for output unless NOOUTPUT is set."
+ (unless neveropen (tramp-maybe-open-connection vec))
+ (let ((p (tramp-get-connection-process vec)))
+ (when (tramp-get-connection-property p "remote-echo" nil)
+ ;; We mark the command string that it can be erased in the output buffer.
+ (tramp-set-connection-property p "check-remote-echo" t)
+ (setq command (format "%s%s%s" tramp-echo-mark command tramp-echo-mark)))
+ (when (string-match "<<'EOF'" command)
+ ;; Unset $PS1 when using here documents, in order to avoid
+ ;; multiple prompts.
+ (setq command (concat "(PS1= ; " command "\n)")))
+ ;; Send the command.
+ (tramp-message vec 6 "%s" command)
+ (tramp-send-string vec command)
+ (unless nooutput (tramp-wait-for-output p))))
+
+(defun tramp-wait-for-output (proc &optional timeout)
+ "Wait for output from remote command."
+ (unless (buffer-live-p (process-buffer proc))
+ (delete-process proc)
+ (tramp-error proc 'file-error "Process `%s' not available, try again" proc))
+ (with-current-buffer (process-buffer proc)
+ (let* (;; Initially, `tramp-end-of-output' is "#$ ". There might
+ ;; be leading escape sequences, which must be ignored.
+ (regexp (format "[^#$\n]*%s\r?$" (regexp-quote tramp-end-of-output)))
+ ;; Sometimes, the commands do not return a newline but a
+ ;; null byte before the shell prompt, for example "git
+ ;; ls-files -c -z ...".
+ (regexp1 (format "\\(^\\|\000\\)%s" regexp))
+ (found (tramp-wait-for-regexp proc timeout regexp1)))
+ (if found
+ (let (buffer-read-only)
+ ;; A simple-minded busybox has sent " ^H" sequences.
+ ;; Delete them.
+ (goto-char (point-min))
+ (when (re-search-forward "^\\(.\b\\)+$" (point-at-eol) t)
+ (forward-line 1)
+ (delete-region (point-min) (point)))
+ ;; Delete the prompt.
+ (goto-char (point-max))
+ (re-search-backward regexp nil t)
+ (delete-region (point) (point-max)))
+ (if timeout
+ (tramp-error
+ proc 'file-error
+ "[[Remote prompt `%s' not found in %d secs]]"
+ tramp-end-of-output timeout)
+ (tramp-error
+ proc 'file-error
+ "[[Remote prompt `%s' not found]]" tramp-end-of-output)))
+ ;; Return value is whether end-of-output sentinel was found.
+ found)))
+
+(defun tramp-send-command-and-check
+ (vec command &optional subshell dont-suppress-err)
+ "Run COMMAND and check its exit status.
+Sends `echo $?' along with the COMMAND for checking the exit status. If
+COMMAND is nil, just sends `echo $?'. Returns the exit status found.
+
+If the optional argument SUBSHELL is non-nil, the command is
+executed in a subshell, ie surrounded by parentheses. If
+DONT-SUPPRESS-ERR is non-nil, stderr won't be sent to /dev/null."
+ (tramp-send-command
+ vec
+ (concat (if subshell "( " "")
+ command
+ (if command (if dont-suppress-err "; " " 2>/dev/null; ") "")
+ "echo tramp_exit_status $?"
+ (if subshell " )" "")))
+ (with-current-buffer (tramp-get-connection-buffer vec)
+ (goto-char (point-max))
+ (unless (re-search-backward "tramp_exit_status [0-9]+" nil t)
+ (tramp-error
+ vec 'file-error "Couldn't find exit status of `%s'" command))
+ (skip-chars-forward "^ ")
+ (prog1
+ (zerop (read (current-buffer)))
+ (let (buffer-read-only)
+ (delete-region (match-beginning 0) (point-max))))))
+
+(defun tramp-barf-unless-okay (vec command fmt &rest args)
+ "Run COMMAND, check exit status, throw error if exit status not okay.
+Similar to `tramp-send-command-and-check' but accepts two more arguments
+FMT and ARGS which are passed to `error'."
+ (unless (tramp-send-command-and-check vec command)
+ (apply 'tramp-error vec 'file-error fmt args)))
+
+(defun tramp-send-command-and-read (vec command)
+ "Run COMMAND and return the output, which must be a Lisp expression.
+In case there is no valid Lisp expression, it raises an error"
+ (tramp-barf-unless-okay vec command "`%s' returns with error" command)
+ (with-current-buffer (tramp-get-connection-buffer vec)
+ ;; Read the expression.
+ (goto-char (point-min))
+ (condition-case nil
+ (prog1 (read (current-buffer))
+ ;; Error handling.
+ (when (re-search-forward "\\S-" (point-at-eol) t)
+ (error nil)))
+ (error (tramp-error
+ vec 'file-error
+ "`%s' does not return a valid Lisp expression: `%s'"
+ command (buffer-string))))))
+
+(defun tramp-convert-file-attributes (vec attr)
+ "Convert file-attributes ATTR generated by perl script, stat or ls.
+Convert file mode bits to string and set virtual device number.
+Return ATTR."
+ (when attr
+ ;; Convert last access time.
+ (unless (listp (nth 4 attr))
+ (setcar (nthcdr 4 attr)
+ (list (floor (nth 4 attr) 65536)
+ (floor (mod (nth 4 attr) 65536)))))
+ ;; Convert last modification time.
+ (unless (listp (nth 5 attr))
+ (setcar (nthcdr 5 attr)
+ (list (floor (nth 5 attr) 65536)
+ (floor (mod (nth 5 attr) 65536)))))
+ ;; Convert last status change time.
+ (unless (listp (nth 6 attr))
+ (setcar (nthcdr 6 attr)
+ (list (floor (nth 6 attr) 65536)
+ (floor (mod (nth 6 attr) 65536)))))
+ ;; Convert file size.
+ (when (< (nth 7 attr) 0)
+ (setcar (nthcdr 7 attr) -1))
+ (when (and (floatp (nth 7 attr))
+ (<= (nth 7 attr) (tramp-compat-most-positive-fixnum)))
+ (setcar (nthcdr 7 attr) (round (nth 7 attr))))
+ ;; Convert file mode bits to string.
+ (unless (stringp (nth 8 attr))
+ (setcar (nthcdr 8 attr) (tramp-file-mode-from-int (nth 8 attr)))
+ (when (stringp (car attr))
+ (aset (nth 8 attr) 0 ?l)))
+ ;; Convert directory indication bit.
+ (when (string-match "^d" (nth 8 attr))
+ (setcar attr t))
+ ;; Convert symlink from `tramp-do-file-attributes-with-stat'.
+ (when (consp (car attr))
+ (if (and (stringp (caar attr))
+ (string-match ".+ -> .\\(.+\\)." (caar attr)))
+ (setcar attr (match-string 1 (caar attr)))
+ (setcar attr nil)))
+ ;; Set file's gid change bit.
+ (setcar (nthcdr 9 attr)
+ (if (numberp (nth 3 attr))
+ (not (= (nth 3 attr)
+ (tramp-get-remote-gid vec 'integer)))
+ (not (string-equal
+ (nth 3 attr)
+ (tramp-get-remote-gid vec 'string)))))
+ ;; Convert inode.
+ (unless (listp (nth 10 attr))
+ (setcar (nthcdr 10 attr)
+ (condition-case nil
+ (cons (floor (nth 10 attr) 65536)
+ (floor (mod (nth 10 attr) 65536)))
+ ;; Inodes can be incredible huge. We must hide this.
+ (error (tramp-get-inode vec)))))
+ ;; Set virtual device number.
+ (setcar (nthcdr 11 attr)
+ (tramp-get-device vec))
+ attr))
+
+(defun tramp-check-cached-permissions (vec access)
+ "Check `file-attributes' caches for VEC.
+Return t if according to the cache access type ACCESS is known to
+be granted."
+ (let ((result nil)
+ (offset (cond
+ ((eq ?r access) 1)
+ ((eq ?w access) 2)
+ ((eq ?x access) 3))))
+ (dolist (suffix '("string" "integer") result)
+ (setq
+ result
+ (or
+ result
+ (let ((file-attr
+ (tramp-get-file-property
+ vec (tramp-file-name-localname vec)
+ (concat "file-attributes-" suffix) nil))
+ (remote-uid
+ (tramp-get-connection-property
+ vec (concat "uid-" suffix) nil))
+ (remote-gid
+ (tramp-get-connection-property
+ vec (concat "gid-" suffix) nil)))
+ (and
+ file-attr
+ (or
+ ;; Not a symlink
+ (eq t (car file-attr))
+ (null (car file-attr)))
+ (or
+ ;; World accessible.
+ (eq access (aref (nth 8 file-attr) (+ offset 6)))
+ ;; User accessible and owned by user.
+ (and
+ (eq access (aref (nth 8 file-attr) offset))
+ (equal remote-uid (nth 2 file-attr)))
+ ;; Group accessible and owned by user's
+ ;; principal group.
+ (and
+ (eq access (aref (nth 8 file-attr) (+ offset 3)))
+ (equal remote-gid (nth 3 file-attr)))))))))))
+
+(defun tramp-file-mode-from-int (mode)
+ "Turn an integer representing a file mode into an ls(1)-like string."
+ (let ((type (cdr
+ (assoc (logand (lsh mode -12) 15) tramp-file-mode-type-map)))
+ (user (logand (lsh mode -6) 7))
+ (group (logand (lsh mode -3) 7))
+ (other (logand (lsh mode -0) 7))
+ (suid (> (logand (lsh mode -9) 4) 0))
+ (sgid (> (logand (lsh mode -9) 2) 0))
+ (sticky (> (logand (lsh mode -9) 1) 0)))
+ (setq user (tramp-file-mode-permissions user suid "s"))
+ (setq group (tramp-file-mode-permissions group sgid "s"))
+ (setq other (tramp-file-mode-permissions other sticky "t"))
+ (concat type user group other)))
+
+(defun tramp-file-mode-permissions (perm suid suid-text)
+ "Convert a permission bitset into a string.
+This is used internally by `tramp-file-mode-from-int'."
+ (let ((r (> (logand perm 4) 0))
+ (w (> (logand perm 2) 0))
+ (x (> (logand perm 1) 0)))
+ (concat (or (and r "r") "-")
+ (or (and w "w") "-")
+ (or (and suid x suid-text) ; suid, execute
+ (and suid (upcase suid-text)) ; suid, !execute
+ (and x "x") "-")))) ; !suid
+
+(defun tramp-shell-case-fold (string)
+ "Converts STRING to shell glob pattern which ignores case."
+ (mapconcat
+ (lambda (c)
+ (if (equal (downcase c) (upcase c))
+ (vector c)
+ (format "[%c%c]" (downcase c) (upcase c))))
+ string
+ ""))
+
+(defun tramp-make-copy-program-file-name (vec)
+ "Create a file name suitable to be passed to `rcp' and workalikes."
+ (let ((user (tramp-file-name-user vec))
+ (host (tramp-file-name-real-host vec))
+ (localname (tramp-shell-quote-argument
+ (tramp-file-name-localname vec))))
+ (if (not (zerop (length user)))
+ (format "%s@%s:%s" user host localname)
+ (format "%s:%s" host localname))))
+
+(defun tramp-method-out-of-band-p (vec size)
+ "Return t if this is an out-of-band method, nil otherwise."
+ (and
+ ;; It shall be an out-of-band method.
+ (tramp-get-method-parameter (tramp-file-name-method vec) 'tramp-copy-program)
+ ;; Either the file size is large enough, or (in rare cases) there
+ ;; does not exist a remote encoding.
+ (or (null tramp-copy-size-limit)
+ (> size tramp-copy-size-limit)
+ (null (tramp-get-inline-coding vec "remote-encoding" size)))))
+
+;; Variables local to connection.
+
+(defun tramp-get-remote-path (vec)
+ (with-connection-property
+ ;; When `tramp-own-remote-path' is in `tramp-remote-path', we
+ ;; cache the result for the session only. Otherwise, the result
+ ;; is cached persistently.
+ (if (memq 'tramp-own-remote-path tramp-remote-path)
+ (tramp-get-connection-process vec)
+ vec)
+ "remote-path"
+ (let* ((remote-path (copy-tree tramp-remote-path))
+ (elt1 (memq 'tramp-default-remote-path remote-path))
+ (elt2 (memq 'tramp-own-remote-path remote-path))
+ (default-remote-path
+ (when elt1
+ (condition-case nil
+ (tramp-send-command-and-read
+ vec "echo \\\"`getconf PATH`\\\"")
+ ;; Default if "getconf" is not available.
+ (error
+ (tramp-message
+ vec 3
+ "`getconf PATH' not successful, using default value \"%s\"."
+ "/bin:/usr/bin")
+ "/bin:/usr/bin"))))
+ (own-remote-path
+ (when elt2
+ (condition-case nil
+ (tramp-send-command-and-read vec "echo \\\"$PATH\\\"")
+ ;; Default if "getconf" is not available.
+ (error
+ (tramp-message
+ vec 3 "$PATH not set, ignoring `tramp-own-remote-path'.")
+ nil)))))
+
+ ;; Replace place holder `tramp-default-remote-path'.
+ (when elt1
+ (setcdr elt1
+ (append
+ (tramp-compat-split-string default-remote-path ":")
+ (cdr elt1)))
+ (setq remote-path (delq 'tramp-default-remote-path remote-path)))
+
+ ;; Replace place holder `tramp-own-remote-path'.
+ (when elt2
+ (setcdr elt2
+ (append
+ (tramp-compat-split-string own-remote-path ":")
+ (cdr elt2)))
+ (setq remote-path (delq 'tramp-own-remote-path remote-path)))
+
+ ;; Remove double entries.
+ (setq elt1 remote-path)
+ (while (consp elt1)
+ (while (and (car elt1) (setq elt2 (member (car elt1) (cdr elt1))))
+ (setcar elt2 nil))
+ (setq elt1 (cdr elt1)))
+
+ ;; Remove non-existing directories.
+ (delq
+ nil
+ (mapcar
+ (lambda (x)
+ (and
+ (stringp x)
+ (file-directory-p
+ (tramp-make-tramp-file-name
+ (tramp-file-name-method vec)
+ (tramp-file-name-user vec)
+ (tramp-file-name-host vec)
+ x))
+ x))
+ remote-path)))))
+
+(defun tramp-get-remote-tmpdir (vec)
+ (with-connection-property vec "tmp-directory"
+ (let ((dir (tramp-shell-quote-argument "/tmp")))
+ (if (and (tramp-send-command-and-check
+ vec (format "%s -d %s" (tramp-get-test-command vec) dir))
+ (tramp-send-command-and-check
+ vec (format "%s -w %s" (tramp-get-test-command vec) dir)))
+ dir
+ (tramp-error vec 'file-error "Directory %s not accessible" dir)))))
+
+(defun tramp-get-ls-command (vec)
+ (with-connection-property vec "ls"
+ (tramp-message vec 5 "Finding a suitable `ls' command")
+ (or
+ (catch 'ls-found
+ (dolist (cmd '("ls" "gnuls" "gls"))
+ (let ((dl (tramp-get-remote-path vec))
+ result)
+ (while (and dl (setq result (tramp-find-executable vec cmd dl t t)))
+ ;; Check parameters. On busybox, "ls" output coloring is
+ ;; enabled by default sometimes. So we try to disable it
+ ;; when possible. $LS_COLORING is not supported there.
+ ;; Some "ls" versions are sensible wrt the order of
+ ;; arguments, they fail when "-al" is after the
+ ;; "--color=never" argument (for example on FreeBSD).
+ (when (tramp-send-command-and-check
+ vec (format "%s -lnd /" result))
+ (when (tramp-send-command-and-check
+ vec (format
+ "%s --color=never -al /dev/null" result))
+ (setq result (concat result " --color=never")))
+ (throw 'ls-found result))
+ (setq dl (cdr dl))))))
+ (tramp-error vec 'file-error "Couldn't find a proper `ls' command"))))
+
+(defun tramp-get-ls-command-with-dired (vec)
+ (save-match-data
+ (with-connection-property vec "ls-dired"
+ (tramp-message vec 5 "Checking, whether `ls --dired' works")
+ ;; Some "ls" versions are sensible wrt the order of arguments,
+ ;; they fail when "-al" is after the "--dired" argument (for
+ ;; example on FreeBSD).
+ (tramp-send-command-and-check
+ vec (format "%s --dired -al /dev/null" (tramp-get-ls-command vec))))))
+
+(defun tramp-get-test-command (vec)
+ (with-connection-property vec "test"
+ (tramp-message vec 5 "Finding a suitable `test' command")
+ (if (tramp-send-command-and-check vec "test 0")
+ "test"
+ (tramp-find-executable vec "test" (tramp-get-remote-path vec)))))
+
+(defun tramp-get-test-nt-command (vec)
+ ;; Does `test A -nt B' work? Use abominable `find' construct if it
+ ;; doesn't. BSD/OS 4.0 wants the parentheses around the command,
+ ;; for otherwise the shell crashes.
+ (with-connection-property vec "test-nt"
+ (or
+ (progn
+ (tramp-send-command
+ vec (format "( %s / -nt / )" (tramp-get-test-command vec)))
+ (with-current-buffer (tramp-get-buffer vec)
+ (goto-char (point-min))
+ (when (looking-at (regexp-quote tramp-end-of-output))
+ (format "%s %%s -nt %%s" (tramp-get-test-command vec)))))
+ (progn
+ (tramp-send-command
+ vec
+ (format
+ "tramp_test_nt () {\n%s -n \"`find $1 -prune -newer $2 -print`\"\n}"
+ (tramp-get-test-command vec)))
+ "tramp_test_nt %s %s"))))
+
+(defun tramp-get-file-exists-command (vec)
+ (with-connection-property vec "file-exists"
+ (tramp-message vec 5 "Finding command to check if file exists")
+ (tramp-find-file-exists-command vec)))
+
+(defun tramp-get-remote-ln (vec)
+ (with-connection-property vec "ln"
+ (tramp-message vec 5 "Finding a suitable `ln' command")
+ (tramp-find-executable vec "ln" (tramp-get-remote-path vec))))
+
+(defun tramp-get-remote-perl (vec)
+ (with-connection-property vec "perl"
+ (tramp-message vec 5 "Finding a suitable `perl' command")
+ (let ((result
+ (or (tramp-find-executable vec "perl5" (tramp-get-remote-path vec))
+ (tramp-find-executable
+ vec "perl" (tramp-get-remote-path vec)))))
+ ;; We must check also for some Perl modules.
+ (when result
+ (with-connection-property vec "perl-file-spec"
+ (tramp-send-command-and-check
+ vec (format "%s -e 'use File::Spec;'" result)))
+ (with-connection-property vec "perl-cwd-realpath"
+ (tramp-send-command-and-check
+ vec (format "%s -e 'use Cwd \"realpath\";'" result))))
+ result)))
+
+(defun tramp-get-remote-stat (vec)
+ (with-connection-property vec "stat"
+ (tramp-message vec 5 "Finding a suitable `stat' command")
+ (let ((result (tramp-find-executable
+ vec "stat" (tramp-get-remote-path vec)))
+ tmp)
+ ;; Check whether stat(1) returns usable syntax. %s does not
+ ;; work on older AIX systems.
+ (when result
+ (setq tmp
+ ;; We don't want to display an error message.
+ (tramp-compat-with-temp-message (or (current-message) "")
+ (ignore-errors
+ (tramp-send-command-and-read
+ vec (format "%s -c '(\"%%N\" %%s)' /" result)))))
+ (unless (and (listp tmp) (stringp (car tmp))
+ (string-match "^./.$" (car tmp))
+ (integerp (cadr tmp)))
+ (setq result nil)))
+ result)))
+
+(defun tramp-get-remote-readlink (vec)
+ (with-connection-property vec "readlink"
+ (tramp-message vec 5 "Finding a suitable `readlink' command")
+ (let ((result (tramp-find-executable
+ vec "readlink" (tramp-get-remote-path vec))))
+ (when (and result
+ ;; We don't want to display an error message.
+ (tramp-compat-with-temp-message (or (current-message) "")
+ (ignore-errors
+ (tramp-send-command-and-check
+ vec (format "%s --canonicalize-missing /" result)))))
+ result))))
+
+(defun tramp-get-remote-trash (vec)
+ (with-connection-property vec "trash"
+ (tramp-message vec 5 "Finding a suitable `trash' command")
+ (tramp-find-executable vec "trash" (tramp-get-remote-path vec))))
+
+(defun tramp-get-remote-id (vec)
+ (with-connection-property vec "id"
+ (tramp-message vec 5 "Finding POSIX `id' command")
+ (or
+ (catch 'id-found
+ (let ((dl (tramp-get-remote-path vec))
+ result)
+ (while (and dl (setq result (tramp-find-executable vec "id" dl t t)))
+ ;; Check POSIX parameter.
+ (when (tramp-send-command-and-check vec (format "%s -u" result))
+ (throw 'id-found result))
+ (setq dl (cdr dl)))))
+ (tramp-error vec 'file-error "Couldn't find a POSIX `id' command"))))
+
+(defun tramp-get-remote-uid (vec id-format)
+ (with-connection-property vec (format "uid-%s" id-format)
+ (let ((res (tramp-send-command-and-read
+ vec
+ (format "%s -u%s %s"
+ (tramp-get-remote-id vec)
+ (if (equal id-format 'integer) "" "n")
+ (if (equal id-format 'integer)
+ "" "| sed -e s/^/\\\"/ -e s/\$/\\\"/")))))
+ ;; The command might not always return a number.
+ (if (and (equal id-format 'integer) (not (integerp res))) -1 res))))
+
+(defun tramp-get-remote-gid (vec id-format)
+ (with-connection-property vec (format "gid-%s" id-format)
+ (let ((res (tramp-send-command-and-read
+ vec
+ (format "%s -g%s %s"
+ (tramp-get-remote-id vec)
+ (if (equal id-format 'integer) "" "n")
+ (if (equal id-format 'integer)
+ "" "| sed -e s/^/\\\"/ -e s/\$/\\\"/")))))
+ ;; The command might not always return a number.
+ (if (and (equal id-format 'integer) (not (integerp res))) -1 res))))
+
+(defun tramp-get-local-uid (id-format)
+ (if (equal id-format 'integer) (user-uid) (user-login-name)))
+
+(defun tramp-get-local-gid (id-format)
+ (nth 3 (tramp-compat-file-attributes "~/" id-format)))
+
+;; Some predefined connection properties.
+(defun tramp-get-inline-compress (vec prop size)
+ "Return the compress command related to PROP.
+PROP is either `inline-compress' or `inline-decompress'. SIZE is
+the length of the file to be compressed.
+
+If no corresponding command is found, nil is returned."
+ (when (and (integerp tramp-inline-compress-start-size)
+ (> size tramp-inline-compress-start-size))
+ (with-connection-property vec prop
+ (tramp-find-inline-compress vec)
+ (tramp-get-connection-property vec prop nil))))
+
+(defun tramp-get-inline-coding (vec prop size)
+ "Return the coding command related to PROP.
+PROP is either `remote-encoding', `remode-decoding',
+`local-encoding' or `local-decoding'.
+
+SIZE is the length of the file to be coded. Depending on SIZE,
+compression might be applied.
+
+If no corresponding command is found, nil is returned.
+Otherwise, either a string is returned which contains a `%s' mark
+to be used for the respective input or output file; or a Lisp
+function cell is returned to be applied on a buffer."
+ ;; We must catch the errors, because we want to return `nil', when
+ ;; no inline coding is found.
+ (ignore-errors
+ (let ((coding
+ (with-connection-property vec prop
+ (tramp-find-inline-encoding vec)
+ (tramp-get-connection-property vec prop nil)))
+ (prop1 (if (string-match "encoding" prop)
+ "inline-compress" "inline-decompress"))
+ compress)
+ ;; The connection property might have been cached. So we must
+ ;; send the script to the remote side - maybe.
+ (when (and coding (symbolp coding) (string-match "remote" prop))
+ (let ((name (symbol-name coding)))
+ (while (string-match (regexp-quote "-") name)
+ (setq name (replace-match "_" nil t name)))
+ (tramp-maybe-send-script vec (symbol-value coding) name)
+ (setq coding name)))
+ (when coding
+ ;; Check for the `compress' command.
+ (setq compress (tramp-get-inline-compress vec prop1 size))
+ ;; Return the value.
+ (cond
+ ((and compress (symbolp coding))
+ (if (string-match "decompress" prop1)
+ `(lambda (beg end)
+ (,coding beg end)
+ (let ((coding-system-for-write 'binary)
+ (coding-system-for-read 'binary))
+ (apply
+ 'call-process-region (point-min) (point-max)
+ (car (split-string ,compress)) t t nil
+ (cdr (split-string ,compress)))))
+ `(lambda (beg end)
+ (let ((coding-system-for-write 'binary)
+ (coding-system-for-read 'binary))
+ (apply
+ 'call-process-region beg end
+ (car (split-string ,compress)) t t nil
+ (cdr (split-string ,compress))))
+ (,coding (point-min) (point-max)))))
+ ((symbolp coding)
+ coding)
+ ((and compress (string-match "decoding" prop))
+ (format "(%s | %s >%%s)" coding compress))
+ (compress
+ (format "(%s <%%s | %s)" compress coding))
+ ((string-match "decoding" prop)
+ (format "%s >%%s" coding))
+ (t
+ (format "%s <%%s" coding)))))))
+
+;;; Integration of eshell.el:
+
+(eval-when-compile
+ (defvar eshell-path-env))
+
+;; eshell.el keeps the path in `eshell-path-env'. We must change it
+;; when `default-directory' points to another host.
+(defun tramp-eshell-directory-change ()
+ "Set `eshell-path-env' to $PATH of the host related to `default-directory'."
+ (setq eshell-path-env
+ (if (file-remote-p default-directory)
+ (with-parsed-tramp-file-name default-directory nil
+ (mapconcat
+ 'identity
+ (tramp-get-remote-path v)
+ ":"))
+ (getenv "PATH"))))
+
+(eval-after-load "esh-util"
+ '(progn
+ (tramp-eshell-directory-change)
+ (add-hook 'eshell-directory-change-hook
+ 'tramp-eshell-directory-change)
+ (add-hook 'tramp-unload-hook
+ (lambda ()
+ (remove-hook 'eshell-directory-change-hook
+ 'tramp-eshell-directory-change)))))
+
+(add-hook 'tramp-unload-hook
+ (lambda ()
+ (unload-feature 'tramp-sh 'force)))
+
+(provide 'tramp-sh)
+
+;;; TODO:
+
+;; * Don't use globbing for directories with many files, as this is
+;; likely to produce long command lines, and some shells choke on
+;; long command lines.
+;; * Make it work for different encodings, and for different file name
+;; encodings, too. (Daniel Pittman)
+;; * Don't search for perl5 and perl. Instead, only search for perl and
+;; then look if it's the right version (with `perl -v').
+;; * When editing a remote CVS controlled file as a different user, VC
+;; gets confused about the file locking status. Try to find out why
+;; the workaround doesn't work.
+;; * Allow out-of-band methods as _last_ multi-hop. Open a connection
+;; until the last but one hop via `start-file-process'. Apply it
+;; also for ftp and smb.
+;; * WIBNI if we had a command "trampclient"? If I was editing in
+;; some shell with root priviledges, it would be nice if I could
+;; just call
+;; trampclient filename.c
+;; as an editor, and the _current_ shell would connect to an Emacs
+;; server and would be used in an existing non-priviledged Emacs
+;; session for doing the editing in question.
+;; That way, I need not tell Emacs my password again and be afraid
+;; that it makes it into core dumps or other ugly stuff (I had Emacs
+;; once display a just typed password in the context of a keyboard
+;; sequence prompt for a question immediately following in a shell
+;; script run within Emacs -- nasty).
+;; And if I have some ssh session running to a different computer,
+;; having the possibility of passing a local file there to a local
+;; Emacs session (in case I can arrange for a connection back) would
+;; be nice.
+;; Likely the corresponding Tramp server should not allow the
+;; equivalent of the emacsclient -eval option in order to make this
+;; reasonably unproblematic. And maybe trampclient should have some
+;; way of passing credentials, like by using an SSL socket or
+;; something. (David Kastrup)
+;; * Reconnect directly to a compliant shell without first going
+;; through the user's default shell. (Pete Forman)
+;; * How can I interrupt the remote process with a signal
+;; (interrupt-process seems not to work)? (Markus Triska)
+;; * Avoid the local shell entirely for starting remote processes. If
+;; so, I think even a signal, when delivered directly to the local
+;; SSH instance, would correctly be propagated to the remote process
+;; automatically; possibly SSH would have to be started with
+;; "-t". (Markus Triska)
+;; * It makes me wonder if tramp couldn't fall back to ssh when scp
+;; isn't on the remote host. (Mark A. Hershberger)
+;; * Use lsh instead of ssh. (Alfred M. Szmidt)
+;; * Optimize out-of-band copying, when both methods are scp-like (not
+;; rsync).
+;; * Keep a second connection open for out-of-band methods like scp or
+;; rsync.
+;; * Try telnet+curl as new method. It might be useful for busybox,
+;; without built-in uuencode/uudecode.
+
+;;; tramp-sh.el ends here
HCoop / bpt / emacs.git / commitdiff