1 ;;; tramp-sh.el --- Tramp access functions for (s)sh-like connections
3 ;; Copyright (C) 1998-2013 Free Software Foundation, Inc.
5 ;; (copyright statements below in code to be updated with the above notice)
7 ;; Author: Kai Großjohann <kai.grossjohann@gmx.net>
8 ;; Michael Albinus <michael.albinus@gmx.de>
9 ;; Keywords: comm, processes
12 ;; This file is part of GNU Emacs.
14 ;; GNU Emacs is free software: you can redistribute it and/or modify
15 ;; it under the terms of the GNU General Public License as published by
16 ;; the Free Software Foundation, either version 3 of the License, or
17 ;; (at your option) any later version.
19 ;; GNU Emacs is distributed in the hope that it will be useful,
20 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
21 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 ;; GNU General Public License for more details.
24 ;; You should have received a copy of the GNU General Public License
25 ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
29 (eval-when-compile (require 'cl)) ; ignore-errors
32 ;; Pacify byte-compiler. The function is needed on XEmacs only. I'm
33 ;; not sure at all that this is the right way to do it, but let's hope
34 ;; it works for now, and wait for a guru to point out the Right Way to
37 ;; (unless (fboundp 'dired-insert-set-properties)
38 ;; (fset 'dired-insert-set-properties 'ignore)))
39 ;; Gerd suggests this:
40 (eval-when-compile (require 'dired))
41 ;; Note that dired is required at run-time, too, when it is needed.
42 ;; It is only needed on XEmacs for the function
43 ;; `dired-insert-set-properties'.
45 (defcustom tramp-inline-compress-start-size 4096
46 "The minimum size of compressing where inline transfer.
47 When inline transfer, compress transferred data of file
48 whose size is this value or above (up to `tramp-copy-size-limit').
49 If it is nil, no compression at all will be applied."
51 :type '(choice (const nil) integer))
53 (defcustom tramp-copy-size-limit 10240
54 "The maximum file size where inline copying is preferred over an \
56 If it is nil, out-of-the-band copy will be used without a check."
58 :type '(choice (const nil) integer))
61 (defcustom tramp-terminal-type "dumb"
62 "Value of TERM environment variable for logging in to remote host.
63 Because Tramp wants to parse the output of the remote shell, it is easily
64 confused by ANSI color escape sequences and suchlike. Often, shell init
65 files conditionalize this setup based on the TERM environment variable."
69 (defconst tramp-color-escape-sequence-regexp "\e[[;0-9]+m"
70 "Escape sequences produced by the \"ls\" command.")
72 ;; ksh on OpenBSD 4.5 requires that $PS1 contains a `#' character for
73 ;; root users. It uses the `$' character for other users. In order
74 ;; to guarantee a proper prompt, we use "#$ " for the prompt.
76 (defvar tramp-end-of-output
79 (md5 (concat (prin1-to-string process-environment) (current-time-string))))
80 "String used to recognize end of output.
81 The '$' character at the end is quoted; the string cannot be
82 detected as prompt when being sent on echoing hosts, therefore.")
85 (defconst tramp-initial-end-of-output "#$ "
86 "Prompt when establishing a connection.")
88 ;; Initialize `tramp-methods' with the supported methods.
90 (add-to-list 'tramp-methods
92 (tramp-login-program "rsh")
93 (tramp-login-args (("%h") ("-l" "%u")))
94 (tramp-remote-shell "/bin/sh")
95 (tramp-remote-shell-args ("-c"))
96 (tramp-copy-program "rcp")
97 (tramp-copy-args (("-p" "%k") ("-r")))
98 (tramp-copy-keep-date t)
99 (tramp-copy-recursive t)))
101 (add-to-list 'tramp-methods
103 (tramp-login-program "remsh")
104 (tramp-login-args (("%h") ("-l" "%u")))
105 (tramp-remote-shell "/bin/sh")
106 (tramp-remote-shell-args ("-c"))
107 (tramp-copy-program "rcp")
108 (tramp-copy-args (("-p" "%k")))
109 (tramp-copy-keep-date t)))
111 (add-to-list 'tramp-methods
113 (tramp-login-program "ssh")
114 (tramp-login-args (("-l" "%u") ("-p" "%p") ("-e" "none") ("%h")))
115 (tramp-async-args (("-q")))
116 (tramp-remote-shell "/bin/sh")
117 (tramp-remote-shell-args ("-c"))
118 (tramp-copy-program "scp")
119 (tramp-copy-args (("-P" "%p") ("-p" "%k") ("-q") ("-r")))
120 (tramp-copy-keep-date t)
121 (tramp-copy-recursive t)
122 (tramp-gw-args (("-o" "GlobalKnownHostsFile=/dev/null")
123 ("-o" "UserKnownHostsFile=/dev/null")
124 ("-o" "StrictHostKeyChecking=no")))
125 (tramp-default-port 22)))
127 (add-to-list 'tramp-methods
129 (tramp-login-program "ssh")
130 (tramp-login-args (("-l" "%u") ("-p" "%p")
131 ("-1") ("-e" "none") ("%h")))
132 (tramp-async-args (("-q")))
133 (tramp-remote-shell "/bin/sh")
134 (tramp-remote-shell-args ("-c"))
135 (tramp-copy-program "scp")
136 (tramp-copy-args (("-1") ("-P" "%p") ("-p" "%k") ("-q") ("-r")))
137 (tramp-copy-keep-date t)
138 (tramp-copy-recursive t)
139 (tramp-gw-args (("-o" "GlobalKnownHostsFile=/dev/null")
140 ("-o" "UserKnownHostsFile=/dev/null")
141 ("-o" "StrictHostKeyChecking=no")))
142 (tramp-default-port 22)))
144 (add-to-list 'tramp-methods
146 (tramp-login-program "ssh")
147 (tramp-login-args (("-l" "%u") ("-p" "%p")
148 ("-2") ("-e" "none") ("%h")))
149 (tramp-async-args (("-q")))
150 (tramp-remote-shell "/bin/sh")
151 (tramp-remote-shell-args ("-c"))
152 (tramp-copy-program "scp")
153 (tramp-copy-args (("-2") ("-P" "%p") ("-p" "%k") ("-q") ("-r")))
154 (tramp-copy-keep-date t)
155 (tramp-copy-recursive t)
156 (tramp-gw-args (("-o" "GlobalKnownHostsFile=/dev/null")
157 ("-o" "UserKnownHostsFile=/dev/null")
158 ("-o" "StrictHostKeyChecking=no")))
159 (tramp-default-port 22)))
161 (add-to-list 'tramp-methods
163 (tramp-login-program "ssh")
164 (tramp-login-args (("-l" "%u") ("-p" "%p")
165 ("-o" "ControlPath=%t.%%r@%%h:%%p")
166 ("-o" "ControlMaster=yes")
167 ("-e" "none") ("%h")))
168 (tramp-async-args (("-q")))
169 (tramp-remote-shell "/bin/sh")
170 (tramp-remote-shell-args ("-c"))
171 (tramp-copy-program "scp")
172 (tramp-copy-args (("-P" "%p") ("-p" "%k") ("-q") ("-r")
173 ("-o" "ControlPath=%t.%%r@%%h:%%p")
174 ("-o" "ControlMaster=auto")))
175 (tramp-copy-keep-date t)
176 (tramp-copy-recursive t)
177 (tramp-gw-args (("-o" "GlobalKnownHostsFile=/dev/null")
178 ("-o" "UserKnownHostsFile=/dev/null")
179 ("-o" "StrictHostKeyChecking=no")))
180 (tramp-default-port 22)))
182 (add-to-list 'tramp-methods
184 (tramp-login-program "ssh")
185 (tramp-login-args (("-l" "%u") ("-p" "%p")
186 ("-e" "none") ("-t" "-t")
188 (tramp-async-args (("-q")))
189 (tramp-remote-shell "/bin/sh")
190 (tramp-remote-shell-args ("-c"))
191 (tramp-copy-program "scp")
192 (tramp-copy-args (("-P" "%p") ("-p" "%k") ("-q") ("-r")))
193 (tramp-copy-keep-date t)
194 (tramp-copy-recursive t)
195 (tramp-gw-args (("-o" "GlobalKnownHostsFile=/dev/null")
196 ("-o" "UserKnownHostsFile=/dev/null")
197 ("-o" "StrictHostKeyChecking=no")))
198 (tramp-default-port 22)))
200 (add-to-list 'tramp-methods
202 (tramp-login-program "ssh")
203 (tramp-login-args (("-l" "%u") ("-p" "%p") ("-e" "none") ("%h")))
204 (tramp-async-args (("-q")))
205 (tramp-remote-shell "/bin/sh")
206 (tramp-remote-shell-args ("-c"))
207 (tramp-copy-program "sftp")))
209 (add-to-list 'tramp-methods
211 (tramp-login-program "ssh")
212 (tramp-login-args (("-l" "%u") ("-p" "%p") ("-e" "none") ("%h")))
213 (tramp-async-args (("-q")))
214 (tramp-remote-shell "/bin/sh")
215 (tramp-remote-shell-args ("-c"))
216 (tramp-copy-program "rsync")
217 (tramp-copy-args (("-e" "ssh") ("-t" "%k") ("-r")))
218 (tramp-copy-keep-date t)
219 (tramp-copy-keep-tmpfile t)
220 (tramp-copy-recursive t)))
222 (add-to-list 'tramp-methods
224 (tramp-login-program "ssh")
225 (tramp-login-args (("-l" "%u") ("-p" "%p")
226 ("-o" "ControlPath=%t.%%r@%%h:%%p")
227 ("-o" "ControlMaster=yes")
228 ("-e" "none") ("%h")))
229 (tramp-async-args (("-q")))
230 (tramp-remote-shell "/bin/sh")
231 (tramp-remote-shell-args ("-c"))
232 (tramp-copy-program "rsync")
233 (tramp-copy-args (("-t" "%k") ("-r")))
234 (tramp-copy-env (("RSYNC_RSH")
237 " -o ControlPath=%t.%%r@%%h:%%p"
238 " -o ControlMaster=auto"))))
239 (tramp-copy-keep-date t)
240 (tramp-copy-keep-tmpfile t)
241 (tramp-copy-recursive t)))
243 (add-to-list 'tramp-methods
245 (tramp-login-program "rsh")
246 (tramp-login-args (("%h") ("-l" "%u")))
247 (tramp-remote-shell "/bin/sh")
248 (tramp-remote-shell-args ("-c"))))
250 (add-to-list 'tramp-methods
252 (tramp-login-program "remsh")
253 (tramp-login-args (("%h") ("-l" "%u")))
254 (tramp-remote-shell "/bin/sh")
255 (tramp-remote-shell-args ("-c"))))
257 (add-to-list 'tramp-methods
259 (tramp-login-program "ssh")
260 (tramp-login-args (("-l" "%u") ("-p" "%p") ("-e" "none") ("%h")))
261 (tramp-async-args (("-q")))
262 (tramp-remote-shell "/bin/sh")
263 (tramp-remote-shell-args ("-c"))
264 (tramp-gw-args (("-o" "GlobalKnownHostsFile=/dev/null")
265 ("-o" "UserKnownHostsFile=/dev/null")
266 ("-o" "StrictHostKeyChecking=no")))
267 (tramp-default-port 22)))
269 (add-to-list 'tramp-methods
271 (tramp-login-program "ssh")
272 (tramp-login-args (("-l" "%u") ("-p" "%p")
273 ("-1") ("-e" "none") ("%h")))
274 (tramp-async-args (("-q")))
275 (tramp-remote-shell "/bin/sh")
276 (tramp-remote-shell-args ("-c"))
277 (tramp-gw-args (("-o" "GlobalKnownHostsFile=/dev/null")
278 ("-o" "UserKnownHostsFile=/dev/null")
279 ("-o" "StrictHostKeyChecking=no")))
280 (tramp-default-port 22)))
282 (add-to-list 'tramp-methods
284 (tramp-login-program "ssh")
285 (tramp-login-args (("-l" "%u") ("-p" "%p")
286 ("-2") ("-e" "none") ("%h")))
287 (tramp-async-args (("-q")))
288 (tramp-remote-shell "/bin/sh")
289 (tramp-remote-shell-args ("-c"))
290 (tramp-gw-args (("-o" "GlobalKnownHostsFile=/dev/null")
291 ("-o" "UserKnownHostsFile=/dev/null")
292 ("-o" "StrictHostKeyChecking=no")))
293 (tramp-default-port 22)))
295 (add-to-list 'tramp-methods
297 (tramp-login-program "ssh")
298 (tramp-login-args (("-l" "%u") ("-p" "%p")
299 ("-e" "none") ("-t" "-t")
301 (tramp-async-args (("-q")))
302 (tramp-remote-shell "/bin/sh")
303 (tramp-remote-shell-args ("-c"))
304 (tramp-gw-args (("-o" "GlobalKnownHostsFile=/dev/null")
305 ("-o" "UserKnownHostsFile=/dev/null")
306 ("-o" "StrictHostKeyChecking=no")))
307 (tramp-default-port 22)))
309 (add-to-list 'tramp-methods
311 (tramp-login-program "telnet")
312 (tramp-login-args (("%h") ("%p")))
313 (tramp-remote-shell "/bin/sh")
314 (tramp-remote-shell-args ("-c"))
315 (tramp-default-port 23)))
317 (add-to-list 'tramp-methods
319 (tramp-login-program "su")
320 (tramp-login-args (("-") ("%u")))
321 (tramp-remote-shell "/bin/sh")
322 (tramp-remote-shell-args ("-c"))))
324 (add-to-list 'tramp-methods
326 (tramp-login-program "sudo")
327 (tramp-login-args (("-u" "%u") ("-s") ("-H") ("-p" "Password:")))
328 (tramp-remote-shell "/bin/sh")
329 (tramp-remote-shell-args ("-c"))))
331 (add-to-list 'tramp-methods
333 (tramp-login-program "ksu")
334 (tramp-login-args (("%u") ("-q")))
335 (tramp-remote-shell "/bin/sh")
336 (tramp-remote-shell-args ("-c"))))
338 (add-to-list 'tramp-methods
340 (tramp-login-program "krlogin")
341 (tramp-login-args (("%h") ("-l" "%u") ("-x")))
342 (tramp-remote-shell "/bin/sh")
343 (tramp-remote-shell-args ("-c"))))
345 (add-to-list 'tramp-methods
347 (tramp-login-program "plink")
348 (tramp-login-args (("-l" "%u") ("-P" "%p") ("-ssh") ("%h")))
349 (tramp-remote-shell "/bin/sh")
350 (tramp-remote-shell-args ("-c"))
351 (tramp-default-port 22)))
353 (add-to-list 'tramp-methods
355 (tramp-login-program "plink")
356 (tramp-login-args (("-l" "%u") ("-P" "%p") ("-1" "-ssh") ("%h")))
357 (tramp-remote-shell "/bin/sh")
358 (tramp-remote-shell-args ("-c"))
359 (tramp-default-port 22)))
361 (add-to-list 'tramp-methods
363 (tramp-login-program "plink")
364 ;; ("%h") must be a single element, see
365 ;; `tramp-compute-multi-hops'.
366 (tramp-login-args (("-load") ("%h") ("-t")
368 "env 'TERM=%s' 'PROMPT_COMMAND=' 'PS1=%s'"
370 tramp-initial-end-of-output))
372 (tramp-remote-shell "/bin/sh")
373 (tramp-remote-shell-args ("-c"))))
375 (add-to-list 'tramp-methods
377 (tramp-login-program "plink")
378 (tramp-login-args (("-l" "%u") ("-P" "%p") ("-ssh") ("%h")))
379 (tramp-remote-shell "/bin/sh")
380 (tramp-remote-shell-args ("-c"))
381 (tramp-copy-program "pscp")
382 (tramp-copy-args (("-l" "%u") ("-P" "%p") ("-scp") ("-p" "%k")
384 (tramp-copy-keep-date t)
385 (tramp-copy-recursive t)
386 (tramp-default-port 22)))
388 (add-to-list 'tramp-methods
390 (tramp-login-program "plink")
391 (tramp-login-args (("-l" "%u") ("-P" "%p") ("-ssh") ("%h")))
392 (tramp-remote-shell "/bin/sh")
393 (tramp-remote-shell-args ("-c"))
394 (tramp-copy-program "pscp")
395 (tramp-copy-args (("-l" "%u") ("-P" "%p") ("-sftp") ("-p" "%k")
397 (tramp-copy-keep-date t)
398 (tramp-copy-recursive t)))
400 (add-to-list 'tramp-methods
402 (tramp-login-program "fsh")
403 (tramp-login-args (("%h") ("-l" "%u") ("sh" "-i")))
404 (tramp-remote-shell "/bin/sh")
405 (tramp-remote-shell-args ("-i") ("-c"))
406 (tramp-copy-program "fcp")
407 (tramp-copy-args (("-p" "%k")))
408 (tramp-copy-keep-date t)))
411 (add-to-list 'tramp-default-method-alist
412 `(,tramp-local-host-regexp "\\`root\\'" "su"))
415 (add-to-list 'tramp-default-user-alist
416 `(,(concat "\\`" (regexp-opt '("su" "sudo" "ksu")) "\\'")
418 ;; Do not add "ssh" based methods, otherwise ~/.ssh/config would be ignored.
419 ;; Do not add "plink" based methods, they ask interactively for the user.
421 (add-to-list 'tramp-default-user-alist
424 (regexp-opt '("rcp" "remcp" "rsh" "telnet" "krlogin" "fcp"))
426 nil ,(user-login-name)))
429 (defconst tramp-completion-function-alist-rsh
430 '((tramp-parse-rhosts "/etc/hosts.equiv")
431 (tramp-parse-rhosts "~/.rhosts"))
432 "Default list of (FUNCTION FILE) pairs to be examined for rsh methods.")
435 (defconst tramp-completion-function-alist-ssh
436 '((tramp-parse-rhosts "/etc/hosts.equiv")
437 (tramp-parse-rhosts "/etc/shosts.equiv")
438 (tramp-parse-shosts "/etc/ssh_known_hosts")
439 (tramp-parse-sconfig "/etc/ssh_config")
440 (tramp-parse-shostkeys "/etc/ssh2/hostkeys")
441 (tramp-parse-sknownhosts "/etc/ssh2/knownhosts")
442 (tramp-parse-rhosts "~/.rhosts")
443 (tramp-parse-rhosts "~/.shosts")
444 (tramp-parse-shosts "~/.ssh/known_hosts")
445 (tramp-parse-sconfig "~/.ssh/config")
446 (tramp-parse-shostkeys "~/.ssh2/hostkeys")
447 (tramp-parse-sknownhosts "~/.ssh2/knownhosts"))
448 "Default list of (FUNCTION FILE) pairs to be examined for ssh methods.")
451 (defconst tramp-completion-function-alist-telnet
452 '((tramp-parse-hosts "/etc/hosts"))
453 "Default list of (FUNCTION FILE) pairs to be examined for telnet methods.")
456 (defconst tramp-completion-function-alist-su
457 '((tramp-parse-passwd "/etc/passwd"))
458 "Default list of (FUNCTION FILE) pairs to be examined for su methods.")
461 (defconst tramp-completion-function-alist-putty
463 ,(if (memq system-type '(windows-nt))
464 "HKEY_CURRENT_USER\\Software\\SimonTatham\\PuTTY\\Sessions"
465 "~/.putty/sessions")))
466 "Default list of (FUNCTION REGISTRY) pairs to be examined for putty sessions.")
469 (eval-after-load 'tramp
471 (tramp-set-completion-function "rcp" tramp-completion-function-alist-rsh)
472 (tramp-set-completion-function "remcp" tramp-completion-function-alist-rsh)
473 (tramp-set-completion-function "scp" tramp-completion-function-alist-ssh)
474 (tramp-set-completion-function "scp1" tramp-completion-function-alist-ssh)
475 (tramp-set-completion-function "scp2" tramp-completion-function-alist-ssh)
476 (tramp-set-completion-function "scpc" tramp-completion-function-alist-ssh)
477 (tramp-set-completion-function "scpx" tramp-completion-function-alist-ssh)
478 (tramp-set-completion-function "sftp" tramp-completion-function-alist-ssh)
479 (tramp-set-completion-function "rsync" tramp-completion-function-alist-ssh)
480 (tramp-set-completion-function
481 "rsyncc" tramp-completion-function-alist-ssh)
482 (tramp-set-completion-function "rsh" tramp-completion-function-alist-rsh)
483 (tramp-set-completion-function "remsh" tramp-completion-function-alist-rsh)
484 (tramp-set-completion-function "ssh" tramp-completion-function-alist-ssh)
485 (tramp-set-completion-function "ssh1" tramp-completion-function-alist-ssh)
486 (tramp-set-completion-function "ssh2" tramp-completion-function-alist-ssh)
487 (tramp-set-completion-function
488 "ssh1_old" tramp-completion-function-alist-ssh)
489 (tramp-set-completion-function
490 "ssh2_old" tramp-completion-function-alist-ssh)
491 (tramp-set-completion-function "sshx" tramp-completion-function-alist-ssh)
492 (tramp-set-completion-function
493 "telnet" tramp-completion-function-alist-telnet)
494 (tramp-set-completion-function "su" tramp-completion-function-alist-su)
495 (tramp-set-completion-function "sudo" tramp-completion-function-alist-su)
496 (tramp-set-completion-function "ksu" tramp-completion-function-alist-su)
497 (tramp-set-completion-function
498 "krlogin" tramp-completion-function-alist-rsh)
499 (tramp-set-completion-function "plink" tramp-completion-function-alist-ssh)
500 (tramp-set-completion-function
501 "plink1" tramp-completion-function-alist-ssh)
502 (tramp-set-completion-function
503 "plinkx" tramp-completion-function-alist-putty)
504 (tramp-set-completion-function "pscp" tramp-completion-function-alist-ssh)
505 (tramp-set-completion-function "fcp" tramp-completion-function-alist-ssh)))
507 ;; "getconf PATH" yields:
508 ;; HP-UX: /usr/bin:/usr/ccs/bin:/opt/ansic/bin:/opt/langtools/bin:/opt/fortran/bin
509 ;; Solaris: /usr/xpg4/bin:/usr/ccs/bin:/usr/bin:/opt/SUNWspro/bin
510 ;; GNU/Linux (Debian, Suse): /bin:/usr/bin
511 ;; FreeBSD: /usr/bin:/bin:/usr/sbin:/sbin: - beware trailing ":"!
514 (defcustom tramp-remote-path
515 '(tramp-default-remote-path "/bin" "/usr/bin" "/sbin" "/usr/sbin"
516 "/usr/local/bin" "/usr/local/sbin" "/local/bin" "/local/freeware/bin"
517 "/local/gnu/bin" "/usr/freeware/bin" "/usr/pkg/bin" "/usr/contrib/bin"
518 "/opt/bin" "/opt/sbin" "/opt/local/bin")
519 "List of directories to search for executables on remote host.
520 For every remote host, this variable will be set buffer local,
521 keeping the list of existing directories on that host.
523 You can use `~' in this list, but when searching for a shell which groks
524 tilde expansion, all directory names starting with `~' will be ignored.
526 `Default Directories' represent the list of directories given by
527 the command \"getconf PATH\". It is recommended to use this
528 entry on top of this list, because these are the default
529 directories for POSIX compatible commands. On remote hosts which
530 do not offer the getconf command (like cygwin), the value
531 \"/bin:/usr/bin\" is used instead of.
533 `Private Directories' are the settings of the $PATH environment,
534 as given in your `~/.profile'."
536 :type '(repeat (choice
537 (const :tag "Default Directories" tramp-default-remote-path)
538 (const :tag "Private Directories" tramp-own-remote-path)
539 (string :tag "Directory"))))
541 (defcustom tramp-remote-process-environment
542 `("HISTFILE=$HOME/.tramp_history" "HISTSIZE=1" "LC_ALL=C"
543 ,(format "TERM=%s" tramp-terminal-type)
544 "EMACS=t" ;; Deprecated.
545 ,(format "INSIDE_EMACS='%s,tramp:%s'" emacs-version tramp-version)
546 "CDPATH=" "HISTORY=" "MAIL=" "MAILCHECK=" "MAILPATH=" "PAGER=\"\""
547 "autocorrect=" "correct=")
548 "List of environment variables to be set on the remote host.
550 Each element should be a string of the form ENVVARNAME=VALUE. An
551 entry ENVVARNAME= disables the corresponding environment variable,
552 which might have been set in the init files like ~/.profile.
554 Special handling is applied to the PATH environment, which should
555 not be set here. Instead, it should be set via `tramp-remote-path'."
557 :type '(repeat string))
559 (defcustom tramp-sh-extra-args '(("/bash\\'" . "-norc -noprofile"))
560 "Alist specifying extra arguments to pass to the remote shell.
561 Entries are (REGEXP . ARGS) where REGEXP is a regular expression
562 matching the shell file name and ARGS is a string specifying the
565 This variable is only used when Tramp needs to start up another shell
566 for tilde expansion. The extra arguments should typically prevent the
567 shell from reading its init file."
569 ;; This might be the wrong way to test whether the widget type
570 ;; `alist' is available. Who knows the right way to test it?
571 :type (if (get 'alist 'widget-type)
572 '(alist :key-type string :value-type string)
573 '(repeat (cons string string))))
575 (defconst tramp-actions-before-shell
576 '((tramp-login-prompt-regexp tramp-action-login)
577 (tramp-password-prompt-regexp tramp-action-password)
578 (tramp-wrong-passwd-regexp tramp-action-permission-denied)
579 (shell-prompt-pattern tramp-action-succeed)
580 (tramp-shell-prompt-pattern tramp-action-succeed)
581 (tramp-yesno-prompt-regexp tramp-action-yesno)
582 (tramp-yn-prompt-regexp tramp-action-yn)
583 (tramp-terminal-prompt-regexp tramp-action-terminal)
584 (tramp-process-alive-regexp tramp-action-process-alive))
585 "List of pattern/action pairs.
586 Whenever a pattern matches, the corresponding action is performed.
587 Each item looks like (PATTERN ACTION).
589 The PATTERN should be a symbol, a variable. The value of this
590 variable gives the regular expression to search for. Note that the
591 regexp must match at the end of the buffer, \"\\'\" is implicitly
594 The ACTION should also be a symbol, but a function. When the
595 corresponding PATTERN matches, the ACTION function is called.")
597 (defconst tramp-actions-copy-out-of-band
598 '((tramp-password-prompt-regexp tramp-action-password)
599 (tramp-wrong-passwd-regexp tramp-action-permission-denied)
600 (tramp-copy-failed-regexp tramp-action-permission-denied)
601 (tramp-process-alive-regexp tramp-action-out-of-band))
602 "List of pattern/action pairs.
603 This list is used for copying/renaming with out-of-band methods.
605 See `tramp-actions-before-shell' for more info.")
607 (defconst tramp-uudecode
608 "(echo begin 600 /tmp/tramp.$$; tail +2) | uudecode
611 "Shell function to implement `uudecode' to standard output.
612 Many systems support `uudecode -o /dev/stdout' or `uudecode -o -'
613 for this or `uudecode -p', but some systems don't, and for them
614 we have this shell function.")
616 (defconst tramp-perl-file-truename
619 use Cwd \"realpath\";
622 my ($volume, @dirs) = @_;
623 my $real = realpath(File::Spec->catpath(
624 $volume, File::Spec->catdir(@dirs), \"\"));
626 my ($vol, $dir) = File::Spec->splitpath($real, 1);
627 return ($vol, File::Spec->splitdir($dir));
630 my $last = pop(@dirs);
631 ($volume, @dirs) = recursive($volume, @dirs);
633 return ($volume, @dirs);
637 $result = realpath($ARGV[0]);
639 my ($vol, $dir) = File::Spec->splitpath($ARGV[0], 1);
640 ($vol, @dirs) = recursive($vol, File::Spec->splitdir($dir));
642 $result = File::Spec->catpath($vol, File::Spec->catdir(@dirs), \"\");
645 if ($ARGV[0] =~ /\\/$/) {
646 $result = $result . \"/\";
649 print \"\\\"$result\\\"\\n\";
650 ' \"$1\" 2>/dev/null"
651 "Perl script to produce output suitable for use with `file-truename'
652 on the remote file system.
653 Escape sequence %s is replaced with name of Perl binary.
654 This string is passed to `format', so percent characters need to be doubled.")
656 (defconst tramp-perl-file-name-all-completions
666 opendir(d, $ARGV[0]) || die(\"$ARGV[0]: $!\\nfail\\n\");
667 @files = readdir(d); closedir(d);
668 foreach $f (@files) {
669 if (case(substr($f, 0, length($ARGV[1]))) eq case($ARGV[1])) {
670 if (-d \"$ARGV[0]/$f\") {
679 ' \"$1\" \"$2\" \"$3\" 2>/dev/null"
680 "Perl script to produce output suitable for use with
681 `file-name-all-completions' on the remote file system. Escape
682 sequence %s is replaced with name of Perl binary. This string is
683 passed to `format', so percent characters need to be doubled.")
685 ;; Perl script to implement `file-attributes' in a Lisp `read'able
686 ;; output. If you are hacking on this, note that you get *no* output
687 ;; unless this spits out a complete line, including the '\n' at the
689 ;; The device number is returned as "-1", because there will be a virtual
690 ;; device number set in `tramp-sh-handle-file-attributes'.
691 (defconst tramp-perl-file-attributes
693 @stat = lstat($ARGV[0]);
698 if (($stat[2] & 0170000) == 0120000)
700 $type = readlink($ARGV[0]);
701 $type = \"\\\"$type\\\"\";
703 elsif (($stat[2] & 0170000) == 040000)
711 $uid = ($ARGV[1] eq \"integer\") ? $stat[4] : \"\\\"\" . getpwuid($stat[4]) . \"\\\"\";
712 $gid = ($ARGV[1] eq \"integer\") ? $stat[5] : \"\\\"\" . getgrgid($stat[5]) . \"\\\"\";
714 \"(%%s %%u %%s %%s (%%u %%u) (%%u %%u) (%%u %%u) %%u.0 %%u t (%%u . %%u) -1)\\n\",
719 $stat[8] >> 16 & 0xffff,
721 $stat[9] >> 16 & 0xffff,
723 $stat[10] >> 16 & 0xffff,
727 $stat[1] >> 16 & 0xffff,
729 );' \"$1\" \"$2\" 2>/dev/null"
730 "Perl script to produce output suitable for use with `file-attributes'
731 on the remote file system.
732 Escape sequence %s is replaced with name of Perl binary.
733 This string is passed to `format', so percent characters need to be doubled.")
735 (defconst tramp-perl-directory-files-and-attributes
737 chdir($ARGV[0]) or printf(\"\\\"Cannot change to $ARGV[0]: $''!''\\\"\\n\"), exit();
738 opendir(DIR,\".\") or printf(\"\\\"Cannot open directory $ARGV[0]: $''!''\\\"\\n\"), exit();
739 @list = readdir(DIR);
743 for($i = 0; $i < $n; $i++)
745 $filename = $list[$i];
746 @stat = lstat($filename);
747 if (($stat[2] & 0170000) == 0120000)
749 $type = readlink($filename);
750 $type = \"\\\"$type\\\"\";
752 elsif (($stat[2] & 0170000) == 040000)
760 $uid = ($ARGV[1] eq \"integer\") ? $stat[4] : \"\\\"\" . getpwuid($stat[4]) . \"\\\"\";
761 $gid = ($ARGV[1] eq \"integer\") ? $stat[5] : \"\\\"\" . getgrgid($stat[5]) . \"\\\"\";
763 \"(\\\"%%s\\\" %%s %%u %%s %%s (%%u %%u) (%%u %%u) (%%u %%u) %%u.0 %%u t (%%u . %%u) (%%u . %%u))\\n\",
769 $stat[8] >> 16 & 0xffff,
771 $stat[9] >> 16 & 0xffff,
773 $stat[10] >> 16 & 0xffff,
777 $stat[1] >> 16 & 0xffff,
779 $stat[0] >> 16 & 0xffff,
782 printf(\")\\n\");' \"$1\" \"$2\" 2>/dev/null"
783 "Perl script implementing `directory-files-attributes' as Lisp `read'able
785 Escape sequence %s is replaced with name of Perl binary.
786 This string is passed to `format', so percent characters need to be doubled.")
788 ;; These two use base64 encoding.
789 (defconst tramp-perl-encode-with-module
790 "%s -MMIME::Base64 -0777 -ne 'print encode_base64($_)' 2>/dev/null"
791 "Perl program to use for encoding a file.
792 Escape sequence %s is replaced with name of Perl binary.
793 This string is passed to `format', so percent characters need to be doubled.
794 This implementation requires the MIME::Base64 Perl module to be installed
795 on the remote host.")
797 (defconst tramp-perl-decode-with-module
798 "%s -MMIME::Base64 -0777 -ne 'print decode_base64($_)' 2>/dev/null"
799 "Perl program to use for decoding a file.
800 Escape sequence %s is replaced with name of Perl binary.
801 This string is passed to `format', so percent characters need to be doubled.
802 This implementation requires the MIME::Base64 Perl module to be installed
803 on the remote host.")
805 (defconst tramp-perl-encode
807 # This script contributed by Juanma Barranquero <lektu@terra.es>.
808 # Copyright (C) 2002-2013 Free Software Foundation, Inc.
813 map {(substr(unpack(q(B8), chr $i++), 2, 6), $_)}
814 split //, q(ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/);
818 # We read in chunks of 54 bytes, to generate output lines
819 # of 72 chars (plus end of line)
820 while (read STDIN, $data, 54) {
823 # Only for the last chunk, and only if did not fill the last three-byte packet
825 my $mod = length($data) %% 3;
826 $pad = q(=) x (3 - $mod) if $mod;
829 # Not the fastest method, but it is simple: unpack to binary string, split
830 # by groups of 6 bits and convert back from binary to byte; then map into
831 # the translation table
835 (substr(unpack(q(B*), $data) . q(00000), 0, 432) =~ /....../g)),
839 "Perl program to use for encoding a file.
840 Escape sequence %s is replaced with name of Perl binary.
841 This string is passed to `format', so percent characters need to be doubled.")
843 (defconst tramp-perl-decode
845 # This script contributed by Juanma Barranquero <lektu@terra.es>.
846 # Copyright (C) 2002-2013 Free Software Foundation, Inc.
851 map {($_, substr(unpack(q(B8), chr $i++), 2, 6))}
852 split //, q(ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/)
855 my %%bytes = map {(unpack(q(B8), chr $_), chr $_)} 0 .. 255;
859 # We are going to accumulate into $pending to accept any line length
860 # (we do not check they are <= 76 chars as the RFC says)
863 while (my $data = <STDIN>) {
866 # If we find one or two =, we have reached the end and
867 # any following data is to be discarded
868 my $finished = $data =~ s/(==?).*/$1/;
871 my $len = length($pending);
872 my $chunk = substr($pending, 0, $len & ~3);
873 $pending = substr($pending, $len & ~3 + 1);
875 # Easy method: translate from chars to (pregenerated) six-bit packets, join,
876 # split in 8-bit chunks and convert back to char.
879 ((join q(), map {$trans{$_} || q()} split //, $chunk) =~ /......../g);
883 "Perl program to use for decoding a file.
884 Escape sequence %s is replaced with name of Perl binary.
885 This string is passed to `format', so percent characters need to be doubled.")
887 (defconst tramp-vc-registered-read-file-names
890 if %s \"$file\"; then
891 echo \"(\\\"$file\\\" \\\"file-exists-p\\\" t)\"
893 echo \"(\\\"$file\\\" \\\"file-exists-p\\\" nil)\"
895 if %s \"$file\"; then
896 echo \"(\\\"$file\\\" \\\"file-readable-p\\\" t)\"
898 echo \"(\\\"$file\\\" \\\"file-readable-p\\\" nil)\"
902 "Script to check existence of VC related files.
903 It must be send formatted with two strings; the tests for file
904 existence, and file readability. Input shall be read via
905 here-document, otherwise the command could exceed maximum length
908 (defconst tramp-file-mode-type-map
909 '((0 . "-") ; Normal file (SVID-v2 and XPG2)
911 (2 . "c") ; character device
912 (3 . "m") ; multiplexed character device (v7)
913 (4 . "d") ; directory
914 (5 . "?") ; Named special file (XENIX)
915 (6 . "b") ; block device
916 (7 . "?") ; multiplexed block device (v7)
917 (8 . "-") ; regular file
918 (9 . "n") ; network special file (HP-UX)
920 (11 . "?") ; ACL shadow inode (Solaris, not userspace)
922 (13 . "D") ; door special (Solaris)
923 (14 . "w")) ; whiteout (BSD)
924 "A list of file types returned from the `stat' system call.
925 This is used to map a mode number to a permission string.")
927 ;; New handlers should be added here. The following operations can be
928 ;; handled using the normal primitives: file-name-sans-versions,
930 (defconst tramp-sh-file-name-handler-alist
931 '((load . tramp-handle-load)
932 (make-symbolic-link . tramp-sh-handle-make-symbolic-link)
933 (file-name-as-directory . tramp-handle-file-name-as-directory)
934 (file-name-directory . tramp-handle-file-name-directory)
935 (file-name-nondirectory . tramp-handle-file-name-nondirectory)
936 (file-truename . tramp-sh-handle-file-truename)
937 (file-exists-p . tramp-sh-handle-file-exists-p)
938 (file-accessible-directory-p . tramp-handle-file-accessible-directory-p)
939 (file-directory-p . tramp-sh-handle-file-directory-p)
940 (file-executable-p . tramp-sh-handle-file-executable-p)
941 (file-readable-p . tramp-sh-handle-file-readable-p)
942 (file-regular-p . tramp-handle-file-regular-p)
943 (file-symlink-p . tramp-handle-file-symlink-p)
944 (file-writable-p . tramp-sh-handle-file-writable-p)
945 (file-ownership-preserved-p . tramp-sh-handle-file-ownership-preserved-p)
946 (file-newer-than-file-p . tramp-sh-handle-file-newer-than-file-p)
947 (file-attributes . tramp-sh-handle-file-attributes)
948 (file-modes . tramp-handle-file-modes)
949 (directory-files . tramp-handle-directory-files)
950 (directory-files-and-attributes
951 . tramp-sh-handle-directory-files-and-attributes)
952 (file-name-all-completions . tramp-sh-handle-file-name-all-completions)
953 (file-name-completion . tramp-handle-file-name-completion)
954 (add-name-to-file . tramp-sh-handle-add-name-to-file)
955 (copy-file . tramp-sh-handle-copy-file)
956 (copy-directory . tramp-sh-handle-copy-directory)
957 (rename-file . tramp-sh-handle-rename-file)
958 (set-file-modes . tramp-sh-handle-set-file-modes)
959 (set-file-times . tramp-sh-handle-set-file-times)
960 (make-directory . tramp-sh-handle-make-directory)
961 (delete-directory . tramp-sh-handle-delete-directory)
962 (delete-file . tramp-sh-handle-delete-file)
963 (directory-file-name . tramp-handle-directory-file-name)
964 ;; `executable-find' is not official yet.
965 (executable-find . tramp-sh-handle-executable-find)
966 (start-file-process . tramp-sh-handle-start-file-process)
967 (process-file . tramp-sh-handle-process-file)
968 (shell-command . tramp-handle-shell-command)
969 (insert-directory . tramp-sh-handle-insert-directory)
970 (expand-file-name . tramp-sh-handle-expand-file-name)
971 (substitute-in-file-name . tramp-handle-substitute-in-file-name)
972 (file-local-copy . tramp-sh-handle-file-local-copy)
973 (file-remote-p . tramp-handle-file-remote-p)
974 (insert-file-contents . tramp-handle-insert-file-contents)
975 (insert-file-contents-literally
976 . tramp-sh-handle-insert-file-contents-literally)
977 (write-region . tramp-sh-handle-write-region)
978 (find-backup-file-name . tramp-handle-find-backup-file-name)
979 (make-auto-save-file-name . tramp-sh-handle-make-auto-save-file-name)
980 (unhandled-file-name-directory . tramp-handle-unhandled-file-name-directory)
981 (dired-compress-file . tramp-sh-handle-dired-compress-file)
982 (dired-recursive-delete-directory
983 . tramp-sh-handle-dired-recursive-delete-directory)
984 (dired-uncache . tramp-handle-dired-uncache)
985 (set-visited-file-modtime . tramp-sh-handle-set-visited-file-modtime)
986 (verify-visited-file-modtime . tramp-sh-handle-verify-visited-file-modtime)
987 (file-selinux-context . tramp-sh-handle-file-selinux-context)
988 (set-file-selinux-context . tramp-sh-handle-set-file-selinux-context)
989 (file-acl . tramp-sh-handle-file-acl)
990 (set-file-acl . tramp-sh-handle-set-file-acl)
991 (vc-registered . tramp-sh-handle-vc-registered))
992 "Alist of handler functions.
993 Operations not mentioned here will be handled by the normal Emacs functions.")
995 ;; This must be the last entry, because `identity' always matches.
997 (add-to-list 'tramp-foreign-file-name-handler-alist
998 '(identity . tramp-sh-file-name-handler) 'append)
1000 ;;; File Name Handler Functions:
1002 (defun tramp-sh-handle-make-symbolic-link
1003 (filename linkname &optional ok-if-already-exists)
1004 "Like `make-symbolic-link' for Tramp files.
1005 If LINKNAME is a non-Tramp file, it is used verbatim as the target of
1006 the symlink. If LINKNAME is a Tramp file, only the localname component is
1007 used as the target of the symlink.
1009 If LINKNAME is a Tramp file and the localname component is relative, then
1010 it is expanded first, before the localname component is taken. Note that
1011 this can give surprising results if the user/host for the source and
1012 target of the symlink differ."
1013 (with-parsed-tramp-file-name linkname l
1014 (let ((ln (tramp-get-remote-ln l))
1015 (cwd (tramp-run-real-handler
1016 'file-name-directory (list l-localname))))
1020 "Making a symbolic link. ln(1) does not exist on the remote host."))
1022 ;; Do the 'confirm if exists' thing.
1023 (when (file-exists-p linkname)
1025 (if (or (null ok-if-already-exists) ; not allowed to exist
1026 (and (numberp ok-if-already-exists)
1029 "File %s already exists; make it a link anyway? "
1032 l 'file-already-exists "File %s already exists" l-localname)
1033 (delete-file linkname)))
1035 ;; If FILENAME is a Tramp name, use just the localname component.
1036 (when (tramp-tramp-file-p filename)
1038 (tramp-file-name-localname
1039 (tramp-dissect-file-name (expand-file-name filename)))))
1041 (tramp-flush-file-property l (file-name-directory l-localname))
1042 (tramp-flush-file-property l l-localname)
1044 ;; Right, they are on the same host, regardless of user, method,
1045 ;; etc. We now make the link on the remote machine. This will
1046 ;; occur as the user that FILENAME belongs to.
1047 (tramp-send-command-and-check
1050 "cd %s && %s -sf %s %s"
1051 (tramp-shell-quote-argument cwd)
1053 (tramp-shell-quote-argument filename)
1054 (tramp-shell-quote-argument l-localname))
1057 (defun tramp-sh-handle-file-truename (filename &optional counter prev-dirs)
1058 "Like `file-truename' for Tramp files."
1059 (with-parsed-tramp-file-name (expand-file-name filename) nil
1060 (tramp-make-tramp-file-name method user host
1061 (with-tramp-file-property v localname "file-truename"
1062 (let ((result nil)) ; result steps in reverse order
1063 (tramp-message v 4 "Finding true name for `%s'" filename)
1065 ;; Use GNU readlink --canonicalize-missing where available.
1066 ((tramp-get-remote-readlink v)
1068 (tramp-send-command-and-read
1070 (format "echo \"\\\"`%s --canonicalize-missing %s`\\\"\""
1071 (tramp-get-remote-readlink v)
1072 (tramp-shell-quote-argument localname)))))
1074 ;; Use Perl implementation.
1075 ((and (tramp-get-remote-perl v)
1076 (tramp-get-connection-property v "perl-file-spec" nil)
1077 (tramp-get-connection-property v "perl-cwd-realpath" nil))
1078 (tramp-maybe-send-script
1079 v tramp-perl-file-truename "tramp_perl_file_truename")
1081 (tramp-send-command-and-read
1083 (format "tramp_perl_file_truename %s"
1084 (tramp-shell-quote-argument localname)))))
1086 ;; Do it yourself. We bind `directory-sep-char' here for
1087 ;; XEmacs on Windows, which would otherwise use backslash.
1088 (t (let* ((directory-sep-char ?/)
1089 (steps (tramp-compat-split-string localname "/"))
1090 (localnamedir (tramp-run-real-handler
1091 'file-name-as-directory (list localname)))
1092 (is-dir (string= localname localnamedir))
1095 ;; Don't make the following value larger than
1096 ;; necessary. People expect an error message in
1097 ;; a timely fashion when something is wrong;
1098 ;; otherwise they might think that Emacs is hung.
1099 ;; Of course, correctness has to come first.
1102 (while (and steps (< numchase numchase-limit))
1103 (setq thisstep (pop steps))
1106 (mapconcat 'identity
1107 (append '("") (reverse result) (list thisstep))
1109 (setq symlink-target
1110 (nth 0 (file-attributes
1111 (tramp-make-tramp-file-name
1113 (mapconcat 'identity
1118 (cond ((string= "." thisstep)
1119 (tramp-message v 5 "Ignoring step `.'"))
1120 ((string= ".." thisstep)
1121 (tramp-message v 5 "Processing step `..'")
1123 ((stringp symlink-target)
1124 ;; It's a symlink, follow it.
1126 v 5 "Follow symlink to %s" symlink-target)
1127 (setq numchase (1+ numchase))
1128 (when (file-name-absolute-p symlink-target)
1130 ;; If the symlink was absolute, we'll get a
1131 ;; string like "/user@host:/some/target";
1132 ;; extract the "/some/target" part from it.
1133 (when (tramp-tramp-file-p symlink-target)
1134 (unless (tramp-equal-remote filename symlink-target)
1137 "Symlink target `%s' on wrong host"
1139 (setq symlink-target localname))
1141 (append (tramp-compat-split-string
1146 (setq result (cons thisstep result)))))
1147 (when (>= numchase numchase-limit)
1150 "Maximum number (%d) of symlinks exceeded" numchase-limit))
1151 (setq result (reverse result))
1152 ;; Combine list to form string.
1155 (mapconcat 'identity (cons "" result) "/")
1158 (or (string= "" result)
1159 (not (string= (substring result -1) "/"))))
1160 (setq result (concat result "/"))))))
1162 (tramp-message v 4 "True name of `%s' is `%s'" localname result)
1167 (defun tramp-sh-handle-file-exists-p (filename)
1168 "Like `file-exists-p' for Tramp files."
1169 (with-parsed-tramp-file-name filename nil
1170 (with-tramp-file-property v localname "file-exists-p"
1171 (or (not (null (tramp-get-file-property
1172 v localname "file-attributes-integer" nil)))
1173 (not (null (tramp-get-file-property
1174 v localname "file-attributes-string" nil)))
1175 (tramp-send-command-and-check
1179 (tramp-get-file-exists-command v)
1180 (tramp-shell-quote-argument localname)))))))
1182 (defun tramp-sh-handle-file-attributes (filename &optional id-format)
1183 "Like `file-attributes' for Tramp files."
1184 (unless id-format (setq id-format 'integer))
1185 ;; Don't modify `last-coding-system-used' by accident.
1186 (let ((last-coding-system-used last-coding-system-used))
1187 (with-parsed-tramp-file-name (expand-file-name filename) nil
1188 (with-tramp-file-property
1189 v localname (format "file-attributes-%s" id-format)
1191 (tramp-convert-file-attributes
1195 ((tramp-get-remote-stat v)
1196 (tramp-do-file-attributes-with-stat v localname id-format))
1197 ((tramp-get-remote-perl v)
1198 (tramp-do-file-attributes-with-perl v localname id-format))
1200 ;; The scripts could fail, for example with huge file size.
1201 (tramp-do-file-attributes-with-ls v localname id-format))))))))
1203 (defun tramp-do-file-attributes-with-ls (vec localname &optional id-format)
1204 "Implement `file-attributes' for Tramp files using the ls(1) command."
1206 res-inode res-filemodes res-numlinks
1207 res-uid res-gid res-size res-symlink-target)
1208 (tramp-message vec 5 "file attributes with ls: %s" localname)
1211 (format "(%s %s || %s -h %s) && %s %s %s"
1212 (tramp-get-file-exists-command vec)
1213 (tramp-shell-quote-argument localname)
1214 (tramp-get-test-command vec)
1215 (tramp-shell-quote-argument localname)
1216 (tramp-get-ls-command vec)
1217 (if (eq id-format 'integer) "-ildn" "-ild")
1218 (tramp-shell-quote-argument localname)))
1219 ;; parse `ls -l' output ...
1220 (with-current-buffer (tramp-get-buffer vec)
1221 (when (> (buffer-size) 0)
1222 (goto-char (point-min))
1226 (read (current-buffer))
1227 (invalid-read-syntax
1228 (when (and (equal (cadr err)
1229 "Integer constant overflow in reader")
1231 "^[0-9]+\\([0-9][0-9][0-9][0-9][0-9]\\)\\'"
1233 (let* ((big (read (substring (car (cddr err)) 0
1234 (match-beginning 1))))
1235 (small (read (match-string 1 (car (cddr err)))))
1236 (twiddle (/ small 65536)))
1237 (cons (+ big twiddle)
1238 (- small (* twiddle 65536))))))))
1239 ;; ... file mode flags
1240 (setq res-filemodes (symbol-name (read (current-buffer))))
1242 (setq res-numlinks (read (current-buffer)))
1244 (setq res-uid (read (current-buffer)))
1245 (setq res-gid (read (current-buffer)))
1246 (if (eq id-format 'integer)
1248 (unless (numberp res-uid) (setq res-uid -1))
1249 (unless (numberp res-gid) (setq res-gid -1)))
1251 (unless (stringp res-uid) (setq res-uid (symbol-name res-uid)))
1252 (unless (stringp res-gid) (setq res-gid (symbol-name res-gid)))))
1254 (setq res-size (read (current-buffer)))
1255 ;; From the file modes, figure out other stuff.
1256 (setq symlinkp (eq ?l (aref res-filemodes 0)))
1257 (setq dirp (eq ?d (aref res-filemodes 0)))
1258 ;; if symlink, find out file name pointed to
1260 (search-forward "-> ")
1261 (setq res-symlink-target (buffer-substring (point) (point-at-eol))))
1262 ;; return data gathered
1264 ;; 0. t for directory, string (name linked to) for symbolic
1266 (or dirp res-symlink-target)
1267 ;; 1. Number of links to file.
1273 ;; 4. Last access time, as a list of integers. Normally this
1274 ;; would be in the same format as `current-time', but the
1275 ;; subseconds part is not currently implemented, and (0 0)
1276 ;; denotes an unknown time.
1277 ;; 5. Last modification time, likewise.
1278 ;; 6. Last status change time, likewise.
1279 '(0 0) '(0 0) '(0 0) ;CCC how to find out?
1280 ;; 7. Size in bytes (-1, if number is out of range).
1282 ;; 8. File modes, as a string of ten letters or dashes as in ls -l.
1284 ;; 9. t if file's gid would change if file were deleted and
1285 ;; recreated. Will be set in `tramp-convert-file-attributes'
1287 ;; 10. inode number.
1289 ;; 11. Device number. Will be replaced by a virtual device number.
1293 (defun tramp-do-file-attributes-with-perl
1294 (vec localname &optional id-format)
1295 "Implement `file-attributes' for Tramp files using a Perl script."
1296 (tramp-message vec 5 "file attributes with perl: %s" localname)
1297 (tramp-maybe-send-script
1298 vec tramp-perl-file-attributes "tramp_perl_file_attributes")
1299 (tramp-send-command-and-read
1301 (format "tramp_perl_file_attributes %s %s"
1302 (tramp-shell-quote-argument localname) id-format)))
1304 (defun tramp-do-file-attributes-with-stat
1305 (vec localname &optional id-format)
1306 "Implement `file-attributes' for Tramp files using stat(1) command."
1307 (tramp-message vec 5 "file attributes with stat: %s" localname)
1308 (tramp-send-command-and-read
1311 ;; On Opsware, pdksh (which is the true name of ksh there) doesn't
1312 ;; parse correctly the sequence "((". Therefore, we add a space.
1313 "( (%s %s || %s -h %s) && %s -c '((\"%%N\") %%h %s %s %%Xe0 %%Ye0 %%Ze0 %%se0 \"%%A\" t %%ie0 -1)' %s || echo nil)"
1314 (tramp-get-file-exists-command vec)
1315 (tramp-shell-quote-argument localname)
1316 (tramp-get-test-command vec)
1317 (tramp-shell-quote-argument localname)
1318 (tramp-get-remote-stat vec)
1319 (if (eq id-format 'integer) "%ue0" "\"%U\"")
1320 (if (eq id-format 'integer) "%ge0" "\"%G\"")
1321 (tramp-shell-quote-argument localname))))
1323 (defun tramp-sh-handle-set-visited-file-modtime (&optional time-list)
1324 "Like `set-visited-file-modtime' for Tramp files."
1325 (unless (buffer-file-name)
1326 (error "Can't set-visited-file-modtime: buffer `%s' not visiting a file"
1329 (tramp-run-real-handler 'set-visited-file-modtime (list time-list))
1330 (let ((f (buffer-file-name))
1332 (with-parsed-tramp-file-name f nil
1333 (let* ((remote-file-name-inhibit-cache t)
1334 (attr (file-attributes f))
1335 ;; '(-1 65535) means file doesn't exists yet.
1336 (modtime (or (nth 5 attr) '(-1 65535))))
1337 (when (boundp 'last-coding-system-used)
1338 (setq coding-system-used (symbol-value 'last-coding-system-used)))
1339 ;; We use '(0 0) as a don't-know value. See also
1340 ;; `tramp-do-file-attributes-with-ls'.
1341 (if (not (equal modtime '(0 0)))
1342 (tramp-run-real-handler 'set-visited-file-modtime (list modtime))
1346 (format "%s -ild %s"
1347 (tramp-get-ls-command v)
1348 (tramp-shell-quote-argument localname)))
1349 (setq attr (buffer-substring (point)
1350 (progn (end-of-line) (point)))))
1351 (tramp-set-file-property
1352 v localname "visited-file-modtime-ild" attr))
1353 (when (boundp 'last-coding-system-used)
1354 (set 'last-coding-system-used coding-system-used))
1357 ;; This function makes the same assumption as
1358 ;; `tramp-sh-handle-set-visited-file-modtime'.
1359 (defun tramp-sh-handle-verify-visited-file-modtime (buf)
1360 "Like `verify-visited-file-modtime' for Tramp files.
1361 At the time `verify-visited-file-modtime' calls this function, we
1362 already know that the buffer is visiting a file and that
1363 `visited-file-modtime' does not return 0. Do not call this
1364 function directly, unless those two cases are already taken care
1366 (with-current-buffer buf
1367 (let ((f (buffer-file-name)))
1368 ;; There is no file visiting the buffer, or the buffer has no
1369 ;; recorded last modification time, or there is no established
1372 (eq (visited-file-modtime) 0)
1373 (not (tramp-file-name-handler 'file-remote-p f nil 'connected)))
1375 (with-parsed-tramp-file-name f nil
1376 (let* ((remote-file-name-inhibit-cache t)
1377 (attr (file-attributes f))
1378 (modtime (nth 5 attr))
1379 (mt (visited-file-modtime)))
1382 ;; File exists, and has a known modtime.
1383 ((and attr (not (equal modtime '(0 0))))
1384 (< (abs (tramp-time-diff
1386 ;; For compatibility, deal with both the old
1387 ;; (HIGH . LOW) and the new (HIGH LOW) return
1388 ;; values of `visited-file-modtime'.
1390 (list (car mt) (cdr mt))
1393 ;; Modtime has the don't know value.
1397 (format "%s -ild %s"
1398 (tramp-get-ls-command v)
1399 (tramp-shell-quote-argument localname)))
1400 (with-current-buffer (tramp-get-buffer v)
1401 (setq attr (buffer-substring
1402 (point) (progn (end-of-line) (point)))))
1405 (tramp-get-file-property
1406 v localname "visited-file-modtime-ild" "")))
1407 ;; If file does not exist, say it is not modified if and
1408 ;; only if that agrees with the buffer's record.
1409 (t (equal mt '(-1 65535))))))))))
1411 (defun tramp-sh-handle-set-file-modes (filename mode)
1412 "Like `set-file-modes' for Tramp files."
1413 (with-parsed-tramp-file-name filename nil
1414 (tramp-flush-file-property v localname)
1415 ;; FIXME: extract the proper text from chmod's stderr.
1416 (tramp-barf-unless-okay
1418 (format "chmod %s %s"
1419 (tramp-compat-decimal-to-octal mode)
1420 (tramp-shell-quote-argument localname))
1421 "Error while changing file's mode %s" filename)))
1423 (defun tramp-sh-handle-set-file-times (filename &optional time)
1424 "Like `set-file-times' for Tramp files."
1425 (if (file-remote-p filename)
1426 (with-parsed-tramp-file-name filename nil
1427 (tramp-flush-file-property v localname)
1428 (let ((time (if (or (null time) (equal time '(0 0)))
1431 ;; With GNU Emacs, `format-time-string' has an optional
1432 ;; parameter UNIVERSAL. This is preferred, because we
1433 ;; could handle the case when the remote host is located
1434 ;; in a different time zone as the local host.
1435 (utc (not (featurep 'xemacs))))
1436 (tramp-send-command-and-check
1437 v (format "%s touch -t %s %s"
1438 (if utc "TZ=UTC; export TZ;" "")
1440 (format-time-string "%Y%m%d%H%M.%S" time t)
1441 (format-time-string "%Y%m%d%H%M.%S" time))
1442 (tramp-shell-quote-argument localname)))))
1444 ;; We handle also the local part, because in older Emacsen,
1445 ;; without `set-file-times', this function is an alias for this.
1446 ;; We are local, so we don't need the UTC settings.
1448 (tramp-compat-call-process
1449 "touch" nil nil nil "-t"
1450 (format-time-string "%Y%m%d%H%M.%S" time)
1451 (tramp-shell-quote-argument filename)))))
1453 (defun tramp-set-file-uid-gid (filename &optional uid gid)
1454 "Set the ownership for FILENAME.
1455 If UID and GID are provided, these values are used; otherwise uid
1456 and gid of the corresponding user is taken. Both parameters must
1457 be non-negative integers."
1458 ;; Modern Unices allow chown only for root. So we might need
1459 ;; another implementation, see `dired-do-chown'. OTOH, it is mostly
1460 ;; working with su(do)? when it is needed, so it shall succeed in
1461 ;; the majority of cases.
1462 ;; Don't modify `last-coding-system-used' by accident.
1463 (let ((last-coding-system-used last-coding-system-used))
1464 (if (file-remote-p filename)
1465 (with-parsed-tramp-file-name filename nil
1466 (if (and (zerop (user-uid)) (tramp-local-host-p v))
1467 ;; If we are root on the local host, we can do it directly.
1468 (tramp-set-file-uid-gid localname uid gid)
1469 (let ((uid (or (and (natnump uid) uid)
1470 (tramp-get-remote-uid v 'integer)))
1471 (gid (or (and (natnump gid) gid)
1472 (tramp-get-remote-gid v 'integer))))
1475 "chown %d:%d %s" uid gid
1476 (tramp-shell-quote-argument localname))))))
1478 ;; We handle also the local part, because there doesn't exist
1479 ;; `set-file-uid-gid'. On W32 "chown" might not work.
1480 (let ((uid (or (and (natnump uid) uid) (tramp-get-local-uid 'integer)))
1481 (gid (or (and (natnump gid) gid) (tramp-get-local-gid 'integer))))
1482 (tramp-compat-call-process
1484 (format "%d:%d" uid gid) (tramp-shell-quote-argument filename))))))
1486 (defun tramp-remote-selinux-p (vec)
1487 "Check, whether SELINUX is enabled on the remote host."
1488 (with-tramp-connection-property
1489 (tramp-get-connection-process vec) "selinux-p"
1490 (let ((result (tramp-find-executable
1491 vec "getenforce" (tramp-get-remote-path vec) t t)))
1494 (tramp-send-command-and-read
1495 vec (format "echo \\\"`%S`\\\"" result))
1498 (defun tramp-sh-handle-file-selinux-context (filename)
1499 "Like `file-selinux-context' for Tramp files."
1500 (with-parsed-tramp-file-name filename nil
1501 (with-tramp-file-property v localname "file-selinux-context"
1502 (let ((context '(nil nil nil nil))
1503 (regexp (concat "\\([a-z0-9_]+\\):" "\\([a-z0-9_]+\\):"
1504 "\\([a-z0-9_]+\\):" "\\([a-z0-9_]+\\)")))
1505 (when (and (tramp-remote-selinux-p v)
1506 (tramp-send-command-and-check
1509 (tramp-get-ls-command v)
1510 (tramp-shell-quote-argument localname))))
1511 (with-current-buffer (tramp-get-connection-buffer v)
1512 (goto-char (point-min))
1513 (when (re-search-forward regexp (point-at-eol) t)
1514 (setq context (list (match-string 1) (match-string 2)
1515 (match-string 3) (match-string 4))))))
1516 ;; Return the context.
1519 (defun tramp-sh-handle-set-file-selinux-context (filename context)
1520 "Like `set-file-selinux-context' for Tramp files."
1521 (with-parsed-tramp-file-name filename nil
1522 (if (and (consp context)
1523 (tramp-remote-selinux-p v)
1524 (tramp-send-command-and-check
1525 v (format "chcon %s %s %s %s %s"
1526 (if (stringp (nth 0 context))
1527 (format "--user=%s" (nth 0 context)) "")
1528 (if (stringp (nth 1 context))
1529 (format "--role=%s" (nth 1 context)) "")
1530 (if (stringp (nth 2 context))
1531 (format "--type=%s" (nth 2 context)) "")
1532 (if (stringp (nth 3 context))
1533 (format "--range=%s" (nth 3 context)) "")
1534 (tramp-shell-quote-argument localname))))
1536 (tramp-set-file-property v localname "file-selinux-context" context)
1538 (tramp-set-file-property v localname "file-selinux-context" 'undef)
1541 (defun tramp-remote-acl-p (vec)
1542 "Check, whether ACL is enabled on the remote host."
1543 (with-tramp-connection-property (tramp-get-connection-process vec) "acl-p"
1544 (tramp-send-command-and-check vec "getfacl /")))
1546 (defun tramp-sh-handle-file-acl (filename)
1547 "Like `file-acl' for Tramp files."
1548 (with-parsed-tramp-file-name filename nil
1549 (with-tramp-file-property v localname "file-acl"
1550 (when (and (tramp-remote-acl-p v)
1551 (tramp-send-command-and-check
1553 "getfacl -ac %s 2>/dev/null"
1554 (tramp-shell-quote-argument localname))))
1555 (with-current-buffer (tramp-get-connection-buffer v)
1556 (goto-char (point-max))
1557 (delete-blank-lines)
1558 (when (> (point-max) (point-min))
1559 (tramp-compat-funcall
1560 'substring-no-properties (buffer-string))))))))
1562 (defun tramp-sh-handle-set-file-acl (filename acl-string)
1563 "Like `set-file-acl' for Tramp files."
1564 (with-parsed-tramp-file-name (expand-file-name filename) nil
1565 (if (and (stringp acl-string) (tramp-remote-acl-p v)
1568 v (format "setfacl --set-file=- %s <<'EOF'\n%s\nEOF\n"
1569 (tramp-shell-quote-argument localname) acl-string))
1570 (tramp-send-command-and-check v nil)))
1573 (tramp-set-file-property v localname "file-acl" acl-string)
1575 ;; In case of errors, we return `nil'.
1576 (tramp-set-file-property v localname "file-acl-string" 'undef)
1579 ;; Simple functions using the `test' command.
1581 (defun tramp-sh-handle-file-executable-p (filename)
1582 "Like `file-executable-p' for Tramp files."
1583 (with-parsed-tramp-file-name filename nil
1584 (with-tramp-file-property v localname "file-executable-p"
1585 ;; Examine `file-attributes' cache to see if request can be
1586 ;; satisfied without remote operation.
1587 (or (tramp-check-cached-permissions v ?x)
1588 (tramp-run-test "-x" filename)))))
1590 (defun tramp-sh-handle-file-readable-p (filename)
1591 "Like `file-readable-p' for Tramp files."
1592 (with-parsed-tramp-file-name filename nil
1593 (with-tramp-file-property v localname "file-readable-p"
1594 ;; Examine `file-attributes' cache to see if request can be
1595 ;; satisfied without remote operation.
1596 (or (tramp-check-cached-permissions v ?r)
1597 (tramp-run-test "-r" filename)))))
1599 ;; When the remote shell is started, it looks for a shell which groks
1600 ;; tilde expansion. Here, we assume that all shells which grok tilde
1601 ;; expansion will also provide a `test' command which groks `-nt' (for
1602 ;; newer than). If this breaks, tell me about it and I'll try to do
1603 ;; something smarter about it.
1604 (defun tramp-sh-handle-file-newer-than-file-p (file1 file2)
1605 "Like `file-newer-than-file-p' for Tramp files."
1606 (cond ((not (file-exists-p file1))
1608 ((not (file-exists-p file2))
1610 ;; We are sure both files exist at this point.
1613 ;; We try to get the mtime of both files. If they are not
1614 ;; equal to the "dont-know" value, then we subtract the times
1615 ;; and obtain the result.
1616 (let ((fa1 (file-attributes file1))
1617 (fa2 (file-attributes file2)))
1618 (if (and (not (equal (nth 5 fa1) '(0 0)))
1619 (not (equal (nth 5 fa2) '(0 0))))
1620 (> 0 (tramp-time-diff (nth 5 fa2) (nth 5 fa1)))
1621 ;; If one of them is the dont-know value, then we can
1622 ;; still try to run a shell command on the remote host.
1623 ;; However, this only works if both files are Tramp
1624 ;; files and both have the same method, same user, same
1626 (unless (tramp-equal-remote file1 file2)
1627 (with-parsed-tramp-file-name
1628 (if (tramp-tramp-file-p file1) file1 file2) nil
1631 "Files %s and %s must have same method, user, host"
1633 (with-parsed-tramp-file-name file1 nil
1635 (tramp-get-test-nt-command v) file1 file2))))))))
1637 ;; Functions implemented using the basic functions above.
1639 (defun tramp-sh-handle-file-directory-p (filename)
1640 "Like `file-directory-p' for Tramp files."
1641 (with-parsed-tramp-file-name filename nil
1642 ;; `file-directory-p' is used as predicate for filename completion.
1643 ;; Sometimes, when a connection is not established yet, it is
1644 ;; desirable to return t immediately for "/method:foo:". It can
1645 ;; be expected that this is always a directory.
1646 (or (zerop (length localname))
1647 (with-tramp-file-property v localname "file-directory-p"
1648 (tramp-run-test "-d" filename)))))
1650 (defun tramp-sh-handle-file-writable-p (filename)
1651 "Like `file-writable-p' for Tramp files."
1652 (with-parsed-tramp-file-name filename nil
1653 (with-tramp-file-property v localname "file-writable-p"
1654 (if (file-exists-p filename)
1655 ;; Examine `file-attributes' cache to see if request can be
1656 ;; satisfied without remote operation.
1657 (or (tramp-check-cached-permissions v ?w)
1658 (tramp-run-test "-w" filename))
1659 ;; If file doesn't exist, check if directory is writable.
1660 (and (tramp-run-test "-d" (file-name-directory filename))
1661 (tramp-run-test "-w" (file-name-directory filename)))))))
1663 (defun tramp-sh-handle-file-ownership-preserved-p (filename &optional group)
1664 "Like `file-ownership-preserved-p' for Tramp files."
1665 (with-parsed-tramp-file-name filename nil
1666 (with-tramp-file-property v localname "file-ownership-preserved-p"
1667 (let ((attributes (file-attributes filename)))
1668 ;; Return t if the file doesn't exist, since it's true that no
1669 ;; information would be lost by an (attempted) delete and create.
1670 (or (null attributes)
1672 (= (nth 2 attributes) (tramp-get-remote-uid v 'integer))
1674 (= (nth 3 attributes) (tramp-get-remote-gid v 'integer)))))))))
1676 ;; Directory listings.
1678 (defun tramp-sh-handle-directory-files-and-attributes
1679 (directory &optional full match nosort id-format)
1680 "Like `directory-files-and-attributes' for Tramp files."
1681 (unless id-format (setq id-format 'integer))
1682 (when (file-directory-p directory)
1683 (setq directory (expand-file-name directory))
1686 (with-parsed-tramp-file-name directory nil
1687 (with-tramp-file-property
1689 (format "directory-files-and-attributes-%s" id-format)
1694 (tramp-convert-file-attributes v (cdr x))))
1696 ((tramp-get-remote-stat v)
1697 (tramp-do-directory-files-and-attributes-with-stat
1698 v localname id-format))
1699 ((tramp-get-remote-perl v)
1700 (tramp-do-directory-files-and-attributes-with-perl
1701 v localname id-format)))))))))
1705 (setq item (pop temp))
1706 (when (or (null match) (string-match match (car item)))
1708 (setcar item (expand-file-name (car item) directory)))
1709 (push item result)))
1713 (sort result (lambda (x y) (string< (car x) (car y))))))))
1715 (defun tramp-do-directory-files-and-attributes-with-perl
1716 (vec localname &optional id-format)
1717 "Implement `directory-files-and-attributes' for Tramp files using a Perl script."
1718 (tramp-message vec 5 "directory-files-and-attributes with perl: %s" localname)
1719 (tramp-maybe-send-script
1720 vec tramp-perl-directory-files-and-attributes
1721 "tramp_perl_directory_files_and_attributes")
1723 (tramp-send-command-and-read
1725 (format "tramp_perl_directory_files_and_attributes %s %s"
1726 (tramp-shell-quote-argument localname) id-format))))
1727 (when (stringp object) (tramp-error vec 'file-error object))
1730 (defun tramp-do-directory-files-and-attributes-with-stat
1731 (vec localname &optional id-format)
1732 "Implement `directory-files-and-attributes' for Tramp files using stat(1) command."
1733 (tramp-message vec 5 "directory-files-and-attributes with stat: %s" localname)
1734 (tramp-send-command-and-read
1738 ;; We must care about filenames with spaces, or starting with
1739 ;; "-"; this would confuse xargs. "ls -aQ" might be a solution,
1740 ;; but it does not work on all remote systems. Therefore, we
1741 ;; quote the filenames via sed.
1742 "cd %s; echo \"(\"; (%s -a | sed -e s/\\$/\\\"/g -e s/^/\\\"/g | "
1744 "'(\"%%n\" (\"%%N\") %%h %s %s %%Xe0 %%Ye0 %%Ze0 %%se0 \"%%A\" t %%ie0 -1)'"
1745 " 2>/dev/null); echo \")\"")
1746 (tramp-shell-quote-argument localname)
1747 (tramp-get-ls-command vec)
1748 (tramp-get-remote-stat vec)
1749 (if (eq id-format 'integer) "%ue0" "\"%U\"")
1750 (if (eq id-format 'integer) "%ge0" "\"%G\""))))
1752 ;; This function should return "foo/" for directories and "bar" for
1754 (defun tramp-sh-handle-file-name-all-completions (filename directory)
1755 "Like `file-name-all-completions' for Tramp files."
1756 (unless (save-match-data (string-match "/" filename))
1757 (with-parsed-tramp-file-name (expand-file-name directory) nil
1764 ;; Try cache entries for filename, filename with last
1765 ;; character removed, filename with last two characters
1766 ;; removed, ..., and finally the empty string - all
1767 ;; concatenated to the local directory name.
1768 (let ((remote-file-name-inhibit-cache
1769 (or remote-file-name-inhibit-cache
1770 tramp-completion-reread-directory-timeout)))
1772 ;; This is inefficient for very long filenames, pity
1773 ;; `reduce' is not available...
1780 (tramp-get-file-property
1782 (concat localname (substring filename 0 x))
1783 "file-name-all-completions"
1785 (when cache-hit (list cache-hit))))
1786 ;; We cannot use a length of 0, because file properties
1787 ;; for "foo" and "foo/" are identical.
1788 (tramp-compat-number-sequence (length filename) 1 -1)))))
1790 ;; Cache expired or no matching cache entry found so we need
1791 ;; to perform a remote operation.
1793 ;; Get a list of directories and files, including reliably
1794 ;; tagging the directories with a trailing '/'. Because I
1795 ;; rock. --daniel@danann.net
1797 ;; Changed to perform `cd' in the same remote op and only
1798 ;; get entries starting with `filename'. Capture any `cd'
1799 ;; error messages. Ensure any `cd' and `echo' aliases are
1803 (if (tramp-get-remote-perl v)
1805 (tramp-maybe-send-script
1806 v tramp-perl-file-name-all-completions
1807 "tramp_perl_file_name_all_completions")
1808 (format "tramp_perl_file_name_all_completions %s %s %d"
1809 (tramp-shell-quote-argument localname)
1810 (tramp-shell-quote-argument filename)
1812 ;; `read-file-name-completion-ignore-case'
1813 ;; is introduced with Emacs 22.1.
1815 'read-file-name-completion-ignore-case)
1816 'read-file-name-completion-ignore-case
1817 'completion-ignore-case))
1821 "(\\cd %s 2>&1 && (%s %s -a 2>/dev/null"
1822 ;; `ls' with wildcard might fail with `Argument
1823 ;; list too long' error in some corner cases; if
1824 ;; `ls' fails after `cd' succeeded, chances are
1825 ;; that's the case, so let's retry without
1826 ;; wildcard. This will return "too many" entries
1827 ;; but that isn't harmful.
1828 " || %s -a 2>/dev/null)"
1829 " | while read f; do"
1830 " if %s -d \"$f\" 2>/dev/null;"
1831 " then \\echo \"$f/\"; else \\echo \"$f\"; fi; done"
1832 " && \\echo ok) || \\echo fail")
1833 (tramp-shell-quote-argument localname)
1834 (tramp-get-ls-command v)
1835 ;; When `filename' is empty, just `ls' without
1836 ;; filename argument is more efficient than `ls *'
1837 ;; for very large directories and might avoid the
1838 ;; `Argument list too long' error.
1840 ;; With and only with wildcard, we need to add
1841 ;; `-d' to prevent `ls' from descending into
1843 (if (zerop (length filename))
1845 (concat (tramp-shell-quote-argument filename) "* -d"))
1846 (tramp-get-ls-command v)
1847 (tramp-get-test-command v))))
1849 ;; Now grab the output.
1850 (with-current-buffer (tramp-get-buffer v)
1851 (goto-char (point-max))
1853 ;; Check result code, found in last line of output.
1855 (if (looking-at "^fail$")
1857 ;; Grab error message from line before last line
1858 ;; (it was put there by `cd 2>&1').
1862 "tramp-sh-handle-file-name-all-completions: %s"
1863 (buffer-substring (point) (point-at-eol))))
1864 ;; For peace of mind, if buffer doesn't end in `fail'
1865 ;; then it should end in `ok'. If neither are in the
1866 ;; buffer something went seriously wrong on the remote
1868 (unless (looking-at "^ok$")
1872 tramp-sh-handle-file-name-all-completions: internal error accessing `%s': `%s'"
1873 (tramp-shell-quote-argument localname) (buffer-string))))
1875 (while (zerop (forward-line -1))
1876 (push (buffer-substring (point) (point-at-eol)) result)))
1878 ;; Because the remote op went through OK we know the
1879 ;; directory we `cd'-ed to exists.
1880 (tramp-set-file-property v localname "file-exists-p" t)
1882 ;; Because the remote op went through OK we know every
1883 ;; file listed by `ls' exists.
1884 (mapc (lambda (entry)
1885 (tramp-set-file-property
1886 v (concat localname entry) "file-exists-p" t))
1889 ;; Store result in the cache.
1890 (tramp-set-file-property
1891 v (concat localname filename)
1892 "file-name-all-completions" result))))))))
1896 (defun tramp-sh-handle-add-name-to-file
1897 (filename newname &optional ok-if-already-exists)
1898 "Like `add-name-to-file' for Tramp files."
1899 (unless (tramp-equal-remote filename newname)
1900 (with-parsed-tramp-file-name
1901 (if (tramp-tramp-file-p filename) filename newname) nil
1904 "add-name-to-file: %s"
1905 "only implemented for same method, same user, same host")))
1906 (with-parsed-tramp-file-name filename v1
1907 (with-parsed-tramp-file-name newname v2
1908 (let ((ln (when v1 (tramp-get-remote-ln v1))))
1909 (when (and (not ok-if-already-exists)
1910 (file-exists-p newname)
1911 (not (numberp ok-if-already-exists))
1914 "File %s already exists; make it a new name anyway? "
1918 "add-name-to-file: file %s already exists" newname))
1919 (tramp-flush-file-property v2 (file-name-directory v2-localname))
1920 (tramp-flush-file-property v2 v2-localname)
1921 (tramp-barf-unless-okay
1923 (format "%s %s %s" ln (tramp-shell-quote-argument v1-localname)
1924 (tramp-shell-quote-argument v2-localname))
1925 "error with add-name-to-file, see buffer `%s' for details"
1928 (defun tramp-sh-handle-copy-file
1929 (filename newname &optional ok-if-already-exists keep-date
1930 preserve-uid-gid preserve-extended-attributes)
1931 "Like `copy-file' for Tramp files."
1932 (setq filename (expand-file-name filename))
1933 (setq newname (expand-file-name newname))
1935 ;; At least one file a Tramp file?
1936 ((or (tramp-tramp-file-p filename)
1937 (tramp-tramp-file-p newname))
1938 (tramp-do-copy-or-rename-file
1939 'copy filename newname ok-if-already-exists keep-date
1940 preserve-uid-gid preserve-extended-attributes))
1942 (preserve-extended-attributes
1943 (tramp-run-real-handler
1945 (list filename newname ok-if-already-exists keep-date
1946 preserve-uid-gid preserve-extended-attributes)))
1948 (tramp-run-real-handler
1950 (list filename newname ok-if-already-exists keep-date preserve-uid-gid)))
1952 (tramp-run-real-handler
1953 'copy-file (list filename newname ok-if-already-exists keep-date)))))
1955 (defun tramp-sh-handle-copy-directory
1956 (dirname newname &optional keep-date parents copy-contents)
1957 "Like `copy-directory' for Tramp files."
1958 (let ((t1 (tramp-tramp-file-p dirname))
1959 (t2 (tramp-tramp-file-p newname)))
1960 (with-parsed-tramp-file-name (if t1 dirname newname) nil
1961 (if (and (tramp-get-method-parameter method 'tramp-copy-recursive)
1962 ;; When DIRNAME and NEWNAME are remote, they must have
1964 (or (null t1) (null t2)
1966 (tramp-file-name-method (tramp-dissect-file-name dirname))
1967 (tramp-file-name-method (tramp-dissect-file-name newname)))))
1968 ;; scp or rsync DTRT.
1970 (setq dirname (directory-file-name (expand-file-name dirname))
1971 newname (directory-file-name (expand-file-name newname)))
1972 (if (and (file-directory-p newname)
1973 (not (string-equal (file-name-nondirectory dirname)
1974 (file-name-nondirectory newname))))
1977 (file-name-nondirectory dirname) newname)))
1978 (if (not (file-directory-p (file-name-directory newname)))
1979 (make-directory (file-name-directory newname) parents))
1980 (tramp-do-copy-or-rename-file-out-of-band
1981 'copy dirname newname keep-date))
1982 ;; We must do it file-wise.
1983 (tramp-run-real-handler
1984 'copy-directory (list dirname newname keep-date parents)))
1986 ;; When newname did exist, we have wrong cached values.
1988 (with-parsed-tramp-file-name newname nil
1989 (tramp-flush-file-property v (file-name-directory localname))
1990 (tramp-flush-file-property v localname))))))
1992 (defun tramp-sh-handle-rename-file
1993 (filename newname &optional ok-if-already-exists)
1994 "Like `rename-file' for Tramp files."
1995 ;; Check if both files are local -- invoke normal rename-file.
1996 ;; Otherwise, use Tramp from local system.
1997 (setq filename (expand-file-name filename))
1998 (setq newname (expand-file-name newname))
1999 ;; At least one file a Tramp file?
2000 (if (or (tramp-tramp-file-p filename)
2001 (tramp-tramp-file-p newname))
2002 (tramp-do-copy-or-rename-file
2003 'rename filename newname ok-if-already-exists t t)
2004 (tramp-run-real-handler
2005 'rename-file (list filename newname ok-if-already-exists))))
2007 (defun tramp-do-copy-or-rename-file
2008 (op filename newname &optional ok-if-already-exists keep-date
2009 preserve-uid-gid preserve-extended-attributes)
2010 "Copy or rename a remote file.
2011 OP must be `copy' or `rename' and indicates the operation to perform.
2012 FILENAME specifies the file to copy or rename, NEWNAME is the name of
2013 the new file (for copy) or the new name of the file (for rename).
2014 OK-IF-ALREADY-EXISTS means don't barf if NEWNAME exists already.
2015 KEEP-DATE means to make sure that NEWNAME has the same timestamp
2016 as FILENAME. PRESERVE-UID-GID, when non-nil, instructs to keep
2017 the uid and gid if both files are on the same host.
2018 PRESERVE-EXTENDED-ATTRIBUTES activates selinux and acl commands.
2020 This function is invoked by `tramp-sh-handle-copy-file' and
2021 `tramp-sh-handle-rename-file'. It is an error if OP is neither
2022 of `copy' and `rename'. FILENAME and NEWNAME must be absolute
2024 (unless (memq op '(copy rename))
2025 (error "Unknown operation `%s', must be `copy' or `rename'" op))
2026 (let ((t1 (tramp-tramp-file-p filename))
2027 (t2 (tramp-tramp-file-p newname))
2028 (length (nth 7 (file-attributes (file-truename filename))))
2029 (attributes (and preserve-extended-attributes
2030 (apply 'file-extended-attributes (list filename))))
2033 (with-parsed-tramp-file-name (if t1 filename newname) nil
2034 (when (and (not ok-if-already-exists) (file-exists-p newname))
2036 v 'file-already-exists "File %s already exists" newname))
2038 (with-tramp-progress-reporter
2039 v 0 (format "%s %s to %s"
2040 (if (eq op 'copy) "Copying" "Renaming")
2044 ;; Both are Tramp files.
2046 (with-parsed-tramp-file-name filename v1
2047 (with-parsed-tramp-file-name newname v2
2049 ;; Shortcut: if method, host, user are the same for
2050 ;; both files, we invoke `cp' or `mv' on the remote
2052 ((tramp-equal-remote filename newname)
2053 (tramp-do-copy-or-rename-file-directly
2055 ok-if-already-exists keep-date preserve-uid-gid))
2057 ;; Try out-of-band operation.
2059 (tramp-method-out-of-band-p v1 length)
2060 (tramp-method-out-of-band-p v2 length))
2061 (tramp-do-copy-or-rename-file-out-of-band
2062 op filename newname keep-date))
2064 ;; No shortcut was possible. So we copy the file
2065 ;; first. If the operation was `rename', we go back
2066 ;; and delete the original file (if the copy was
2067 ;; successful). The approach is simple-minded: we
2068 ;; create a new buffer, insert the contents of the
2069 ;; source file into it, then write out the buffer to
2070 ;; the target file. The advantage is that it doesn't
2071 ;; matter which filename handlers are used for the
2072 ;; source and target file.
2074 (tramp-do-copy-or-rename-file-via-buffer
2075 op filename newname keep-date))))))
2077 ;; One file is a Tramp file, the other one is local.
2080 ;; Fast track on local machine.
2081 ((tramp-local-host-p v)
2082 (tramp-do-copy-or-rename-file-directly
2084 ok-if-already-exists keep-date preserve-uid-gid))
2086 ;; If the Tramp file has an out-of-band method, the
2087 ;; corresponding copy-program can be invoked.
2088 ((tramp-method-out-of-band-p v length)
2089 (tramp-do-copy-or-rename-file-out-of-band
2090 op filename newname keep-date))
2092 ;; Use the inline method via a Tramp buffer.
2093 (t (tramp-do-copy-or-rename-file-via-buffer
2094 op filename newname keep-date))))
2097 ;; One of them must be a Tramp file.
2098 (error "Tramp implementation says this cannot happen")))
2100 ;; Handle `preserve-extended-attributes'. We ignore possible
2101 ;; errors, because ACL strings could be incompatible.
2104 (apply 'set-file-extended-attributes (list newname attributes))))
2106 ;; In case of `rename', we must flush the cache of the source file.
2107 (when (and t1 (eq op 'rename))
2108 (with-parsed-tramp-file-name filename v1
2109 (tramp-flush-file-property v1 (file-name-directory localname))
2110 (tramp-flush-file-property v1 localname)))
2112 ;; When newname did exist, we have wrong cached values.
2114 (with-parsed-tramp-file-name newname v2
2115 (tramp-flush-file-property v2 (file-name-directory localname))
2116 (tramp-flush-file-property v2 localname)))))))
2118 (defun tramp-do-copy-or-rename-file-via-buffer (op filename newname keep-date)
2119 "Use an Emacs buffer to copy or rename a file.
2120 First arg OP is either `copy' or `rename' and indicates the operation.
2121 FILENAME is the source file, NEWNAME the target file.
2122 KEEP-DATE is non-nil if NEWNAME should have the same timestamp as FILENAME."
2124 ;; We must disable multibyte, because binary data shall not be
2126 (set-buffer-multibyte nil)
2127 (let ((coding-system-for-read 'binary)
2128 (jka-compr-inhibit t))
2129 (insert-file-contents-literally filename))
2130 ;; We don't want the target file to be compressed, so we let-bind
2131 ;; `jka-compr-inhibit' to t.
2132 (let ((coding-system-for-write 'binary)
2133 (jka-compr-inhibit t))
2134 (write-region (point-min) (point-max) newname)))
2135 ;; KEEP-DATE handling.
2136 (when keep-date (set-file-times newname (nth 5 (file-attributes filename))))
2138 (set-file-modes newname (tramp-default-file-modes filename))
2139 ;; If the operation was `rename', delete the original file.
2140 (unless (eq op 'copy) (delete-file filename)))
2142 (defun tramp-do-copy-or-rename-file-directly
2143 (op filename newname ok-if-already-exists keep-date preserve-uid-gid)
2144 "Invokes `cp' or `mv' on the remote system.
2145 OP must be one of `copy' or `rename', indicating `cp' or `mv',
2146 respectively. FILENAME specifies the file to copy or rename,
2147 NEWNAME is the name of the new file (for copy) or the new name of
2148 the file (for rename). Both files must reside on the same host.
2149 KEEP-DATE means to make sure that NEWNAME has the same timestamp
2150 as FILENAME. PRESERVE-UID-GID, when non-nil, instructs to keep
2151 the uid and gid from FILENAME."
2152 (let ((t1 (tramp-tramp-file-p filename))
2153 (t2 (tramp-tramp-file-p newname))
2154 (file-times (nth 5 (file-attributes filename)))
2155 (file-modes (tramp-default-file-modes filename)))
2156 (with-parsed-tramp-file-name (if t1 filename newname) nil
2157 (let* ((cmd (cond ((and (eq op 'copy) preserve-uid-gid) "cp -f -p")
2158 ((eq op 'copy) "cp -f")
2159 ((eq op 'rename) "mv -f")
2162 "Unknown operation `%s', must be `copy' or `rename'"
2166 (tramp-file-name-handler 'file-remote-p filename 'localname)
2170 (tramp-file-name-handler 'file-remote-p newname 'localname)
2172 (prefix (file-remote-p (if t1 filename newname)))
2176 ;; Both files are on a remote host, with same user.
2179 (tramp-send-command-and-check
2180 v (format "%s %s %s" cmd
2181 (tramp-shell-quote-argument localname1)
2182 (tramp-shell-quote-argument localname2))))
2183 (with-current-buffer (tramp-get-buffer v)
2184 (goto-char (point-min))
2188 ;; Mask cp -f error.
2190 tramp-operation-not-permitted-regexp nil t))
2192 (tramp-error-with-buffer
2194 "Copying directly failed, see buffer `%s' for details."
2197 ;; We are on the local host.
2200 ;; We can do it directly.
2201 ((let (file-name-handler-alist)
2202 (and (file-readable-p localname1)
2203 (file-writable-p (file-name-directory localname2))
2204 (or (file-directory-p localname2)
2205 (file-writable-p localname2))))
2207 (tramp-compat-copy-file
2208 localname1 localname2 ok-if-already-exists
2209 keep-date preserve-uid-gid)
2210 (tramp-run-real-handler
2211 'rename-file (list localname1 localname2 ok-if-already-exists))))
2213 ;; We can do it directly with `tramp-send-command'
2214 ((and (file-readable-p (concat prefix localname1))
2216 (file-name-directory (concat prefix localname2)))
2217 (or (file-directory-p (concat prefix localname2))
2218 (file-writable-p (concat prefix localname2))))
2219 (tramp-do-copy-or-rename-file-directly
2220 op (concat prefix localname1) (concat prefix localname2)
2221 ok-if-already-exists keep-date t)
2222 ;; We must change the ownership to the local user.
2223 (tramp-set-file-uid-gid
2224 (concat prefix localname2)
2225 (tramp-get-local-uid 'integer)
2226 (tramp-get-local-gid 'integer)))
2228 ;; We need a temporary file in between.
2230 ;; Create the temporary file.
2231 (let ((tmpfile (tramp-compat-make-temp-file localname1)))
2236 (tramp-barf-unless-okay
2239 (tramp-shell-quote-argument localname1)
2240 (tramp-shell-quote-argument tmpfile))
2241 "Copying directly failed, see buffer `%s' for details."
2242 (tramp-get-buffer v))
2243 ;; We must change the ownership as remote user.
2244 ;; Since this does not work reliable, we also
2245 ;; give read permissions.
2247 (concat prefix tmpfile)
2248 (tramp-compat-octal-to-decimal "0777"))
2249 (tramp-set-file-uid-gid
2250 (concat prefix tmpfile)
2251 (tramp-get-local-uid 'integer)
2252 (tramp-get-local-gid 'integer)))
2255 (tramp-compat-copy-file
2256 localname1 tmpfile t
2257 keep-date preserve-uid-gid)
2258 (tramp-run-real-handler
2260 (list localname1 tmpfile t)))
2261 ;; We must change the ownership as local user.
2262 ;; Since this does not work reliable, we also
2263 ;; give read permissions.
2265 tmpfile (tramp-compat-octal-to-decimal "0777"))
2266 (tramp-set-file-uid-gid
2268 (tramp-get-remote-uid v 'integer)
2269 (tramp-get-remote-gid v 'integer))))
2271 ;; Move the temporary file to its destination.
2274 (tramp-barf-unless-okay
2277 (tramp-shell-quote-argument tmpfile)
2278 (tramp-shell-quote-argument localname2))
2279 "Copying directly failed, see buffer `%s' for details."
2280 (tramp-get-buffer v)))
2282 (tramp-run-real-handler
2284 (list tmpfile localname2 ok-if-already-exists)))))
2287 (ignore-errors (delete-file tmpfile)))))))))
2289 ;; Set the time and mode. Mask possible errors.
2292 (set-file-times newname file-times)
2293 (set-file-modes newname file-modes))))))
2295 (defun tramp-do-copy-or-rename-file-out-of-band (op filename newname keep-date)
2296 "Invoke rcp program to copy.
2297 The method used must be an out-of-band method."
2298 (let* ((t1 (tramp-tramp-file-p filename))
2299 (t2 (tramp-tramp-file-p newname))
2300 (orig-vec (tramp-dissect-file-name (if t1 filename newname)))
2301 copy-program copy-args copy-env copy-keep-date port spec
2304 (with-parsed-tramp-file-name (if t1 filename newname) nil
2307 ;; Both are Tramp files. We shall optimize it when the
2308 ;; methods for filename and newname are the same.
2309 (let* ((dir-flag (file-directory-p filename))
2310 (tmpfile (tramp-compat-make-temp-file localname dir-flag)))
2314 (file-name-nondirectory newname) tmpfile)))
2317 (tramp-do-copy-or-rename-file-out-of-band
2318 op filename tmpfile keep-date)
2319 (tramp-do-copy-or-rename-file-out-of-band
2320 'rename tmpfile newname keep-date))
2324 (tramp-compat-delete-directory
2325 (expand-file-name ".." tmpfile) 'recursive)
2326 (delete-file tmpfile)))))
2328 ;; Set variables for computing the prompt for reading
2330 (setq tramp-current-method (tramp-file-name-method v)
2331 tramp-current-user (or (tramp-file-name-user v)
2332 (tramp-get-connection-property
2334 tramp-current-host (tramp-file-name-real-host v))
2336 ;; Expand hops. Might be necessary for gateway methods.
2337 (setq v (car (tramp-compute-multi-hops v)))
2338 (aset v 3 localname)
2340 ;; Check which ones of source and target are Tramp files.
2341 (setq source (if t1 (tramp-make-copy-program-file-name v) filename)
2343 (if (and (file-directory-p filename)
2345 (file-name-nondirectory filename)
2346 (file-name-nondirectory newname)))
2347 'file-name-directory
2349 (if t2 (tramp-make-copy-program-file-name v) newname)))
2351 ;; Check for host and port number. We cannot use
2352 ;; `tramp-file-name-port', because this returns also
2353 ;; `tramp-default-port', which might clash with settings in
2355 (setq host (tramp-file-name-host v)
2357 (when (string-match tramp-host-with-port-regexp host)
2358 (setq port (string-to-number (match-string 2 host))
2359 host (string-to-number (match-string 1 host))))
2361 ;; Check for user. There might be an interactive setting.
2362 (setq user (or (tramp-file-name-user v)
2363 (tramp-get-connection-property v "login-as" nil)))
2365 ;; Compose copy command.
2366 (setq host (or host "")
2369 spec (format-spec-make
2370 ?h host ?u user ?p port
2371 ?t (tramp-get-connection-property
2372 (tramp-get-connection-process v) "temp-file" "")
2373 ?k (if keep-date " " ""))
2374 copy-program (tramp-get-method-parameter
2375 method 'tramp-copy-program)
2376 copy-keep-date (tramp-get-method-parameter
2377 method 'tramp-copy-keep-date)
2380 ;; " " has either been a replacement of "%k" (when
2381 ;; keep-date argument is non-nil), or a replacement
2382 ;; for the whole keep-date sublist.
2386 (tramp-get-method-parameter method 'tramp-copy-args)
2391 (let ((y (mapcar (lambda (z) (format-spec z spec)) x)))
2392 (if (member "" y) '(" ") y))))))
2398 (setq x (mapcar (lambda (y) (format-spec y spec)) x))
2399 (unless (member "" x) (mapconcat 'identity x " ")))
2400 (tramp-get-method-parameter method 'tramp-copy-env))))
2402 ;; Check for program.
2403 (unless (let ((default-directory
2404 (tramp-compat-temporary-file-directory)))
2405 (executable-find copy-program))
2407 v 'file-error "Cannot find copy program: %s" copy-program))
2411 ;; The default directory must be remote.
2412 (let ((default-directory
2413 (file-name-directory (if t1 filename newname)))
2414 (process-environment (copy-sequence process-environment)))
2415 ;; Set the transfer process properties.
2416 (tramp-set-connection-property
2417 v "process-name" (buffer-name (current-buffer)))
2418 (tramp-set-connection-property
2419 v "process-buffer" (current-buffer))
2422 orig-vec 5 "%s=\"%s\"" (car copy-env) (cadr copy-env))
2423 (setenv (pop copy-env) (pop copy-env)))
2425 ;; Use an asynchronous process. By this, password can
2426 ;; be handled. The default directory must be local, in
2427 ;; order to apply the correct `copy-program'. We don't
2428 ;; set a timeout, because the copying of large files can
2429 ;; last longer than 60 secs.
2430 (let ((p (let ((default-directory
2431 (tramp-compat-temporary-file-directory)))
2432 (apply 'start-process-shell-command
2433 (tramp-get-connection-name v)
2434 (tramp-get-connection-buffer v)
2439 (shell-quote-argument source)
2440 (shell-quote-argument target)
2441 "&&" "echo" "tramp_exit_status" "0"
2442 "||" "echo" "tramp_exit_status" "1"))))))
2445 (mapconcat 'identity (process-command p) " "))
2446 (tramp-compat-set-process-query-on-exit-flag p nil)
2447 (tramp-process-actions
2448 p v nil tramp-actions-copy-out-of-band)
2450 ;; Check the return code.
2451 (goto-char (point-max))
2453 (re-search-backward "tramp_exit_status [0-9]+" nil t)
2455 orig-vec 'file-error
2456 "Couldn't find exit status of `%s'" (process-command p)))
2457 (skip-chars-forward "^ ")
2458 (unless (zerop (read (current-buffer)))
2461 orig-vec 'file-error
2462 "Error copying: `%s'"
2463 (buffer-substring (point-min) (point-at-eol))))))
2465 ;; Reset the transfer process properties.
2466 (tramp-message orig-vec 6 "\n%s" (buffer-string))
2467 (tramp-set-connection-property v "process-name" nil)
2468 (tramp-set-connection-property v "process-buffer" nil)))
2470 ;; Handle KEEP-DATE argument.
2471 (when (and keep-date (not copy-keep-date))
2472 (set-file-times newname (nth 5 (file-attributes filename))))
2475 (unless (and keep-date copy-keep-date)
2477 (set-file-modes newname (tramp-default-file-modes filename)))))
2479 ;; If the operation was `rename', delete the original file.
2480 (unless (eq op 'copy)
2481 (if (file-regular-p filename)
2482 (delete-file filename)
2483 (tramp-compat-delete-directory filename 'recursive))))))
2485 (defun tramp-sh-handle-make-directory (dir &optional parents)
2486 "Like `make-directory' for Tramp files."
2487 (setq dir (expand-file-name dir))
2488 (with-parsed-tramp-file-name dir nil
2489 (tramp-flush-directory-property v (file-name-directory localname))
2491 (tramp-barf-unless-okay
2493 (if parents "mkdir -p" "mkdir")
2494 (tramp-shell-quote-argument localname))
2495 "Couldn't make directory %s" dir))))
2497 (defun tramp-sh-handle-delete-directory (directory &optional recursive)
2498 "Like `delete-directory' for Tramp files."
2499 (setq directory (expand-file-name directory))
2500 (with-parsed-tramp-file-name directory nil
2501 (tramp-flush-file-property v (file-name-directory localname))
2502 (tramp-flush-directory-property v localname)
2503 (tramp-barf-unless-okay
2505 (if recursive "rm -rf" "rmdir")
2506 (tramp-shell-quote-argument localname))
2507 "Couldn't delete %s" directory)))
2509 (defun tramp-sh-handle-delete-file (filename &optional trash)
2510 "Like `delete-file' for Tramp files."
2511 (setq filename (expand-file-name filename))
2512 (with-parsed-tramp-file-name filename nil
2513 (tramp-flush-file-property v (file-name-directory localname))
2514 (tramp-flush-file-property v localname)
2515 (tramp-barf-unless-okay
2517 (or (and trash (tramp-get-remote-trash v)) "rm -f")
2518 (tramp-shell-quote-argument localname))
2519 "Couldn't delete %s" filename)))
2523 ;; CCC: This does not seem to be enough. Something dies when
2524 ;; we try and delete two directories under Tramp :/
2525 (defun tramp-sh-handle-dired-recursive-delete-directory (filename)
2526 "Recursively delete the directory given.
2527 This is like `dired-recursive-delete-directory' for Tramp files."
2528 (with-parsed-tramp-file-name filename nil
2529 ;; Run a shell command 'rm -r <localname>'.
2530 ;; Code shamelessly stolen from the dired implementation and, um, hacked :)
2531 (unless (file-exists-p filename)
2532 (tramp-error v 'file-error "No such directory: %s" filename))
2533 ;; Which is better, -r or -R? (-r works for me <daniel@danann.net>).
2536 (format "rm -rf %s" (tramp-shell-quote-argument localname))
2537 ;; Don't read the output, do it explicitly.
2539 ;; Wait for the remote system to return to us...
2540 ;; This might take a while, allow it plenty of time.
2541 (tramp-wait-for-output (tramp-get-connection-process v) 120)
2542 ;; Make sure that it worked...
2543 (tramp-flush-file-property v (file-name-directory localname))
2544 (tramp-flush-directory-property v localname)
2545 (and (file-exists-p filename)
2547 v 'file-error "Failed to recursively delete %s" filename))))
2549 (defun tramp-sh-handle-dired-compress-file (file &rest ok-flag)
2550 "Like `dired-compress-file' for Tramp files."
2551 ;; OK-FLAG is valid for XEmacs only, but not implemented.
2552 ;; Code stolen mainly from dired-aux.el.
2553 (with-parsed-tramp-file-name file nil
2554 (tramp-flush-file-property v localname)
2557 (if (not (featurep 'xemacs))
2559 (symbol-value 'dired-compress-file-suffixes)
2560 ;; XEmacs has `dired-compression-method-alist', which is
2561 ;; transformed into `dired-compress-file-suffixes' structure.
2564 (list (concat (regexp-quote (nth 1 x)) "\\'")
2566 (mapconcat 'identity (nth 3 x) " ")))
2567 (symbol-value 'dired-compression-method-alist))))
2569 ;; See if any suffix rule matches this file name.
2571 (let (case-fold-search)
2572 (if (string-match (car (car suffixes)) localname)
2573 (setq suffix (car suffixes) suffixes nil))
2574 (setq suffixes (cdr suffixes))))
2576 (cond ((file-symlink-p file)
2578 ((and suffix (nth 2 suffix))
2579 ;; We found an uncompression rule.
2580 (with-tramp-progress-reporter
2581 v 0 (format "Uncompressing %s" file)
2582 (when (tramp-send-command-and-check
2583 v (concat (nth 2 suffix) " "
2584 (tramp-shell-quote-argument localname)))
2585 ;; `dired-remove-file' is not defined in XEmacs.
2586 (tramp-compat-funcall 'dired-remove-file file)
2587 (string-match (car suffix) file)
2588 (concat (substring file 0 (match-beginning 0))))))
2590 ;; We don't recognize the file as compressed, so compress it.
2592 (with-tramp-progress-reporter v 0 (format "Compressing %s" file)
2593 (when (tramp-send-command-and-check
2594 v (concat "gzip -f "
2595 (tramp-shell-quote-argument localname)))
2596 ;; `dired-remove-file' is not defined in XEmacs.
2597 (tramp-compat-funcall 'dired-remove-file file)
2598 (cond ((file-exists-p (concat file ".gz"))
2599 (concat file ".gz"))
2600 ((file-exists-p (concat file ".z"))
2604 (defun tramp-sh-handle-insert-directory
2605 (filename switches &optional wildcard full-directory-p)
2606 "Like `insert-directory' for Tramp files."
2607 (setq filename (expand-file-name filename))
2608 (with-parsed-tramp-file-name filename nil
2609 (if (and (featurep 'ls-lisp)
2610 (not (symbol-value 'ls-lisp-use-insert-directory-program)))
2611 (tramp-run-real-handler
2612 'insert-directory (list filename switches wildcard full-directory-p))
2613 (when (stringp switches)
2614 (setq switches (split-string switches)))
2615 (when (and (member "--dired" switches)
2616 (not (tramp-get-ls-command-with-dired v)))
2617 (setq switches (delete "--dired" switches)))
2619 (setq wildcard (tramp-run-real-handler
2620 'file-name-nondirectory (list localname)))
2621 (setq localname (tramp-run-real-handler
2622 'file-name-directory (list localname))))
2623 (unless full-directory-p
2624 (setq switches (add-to-list 'switches "-d" 'append)))
2625 (setq switches (mapconcat 'tramp-shell-quote-argument switches " "))
2627 (setq switches (concat switches " " wildcard)))
2629 v 4 "Inserting directory `ls %s %s', wildcard %s, fulldir %s"
2630 switches filename (if wildcard "yes" "no")
2631 (if full-directory-p "yes" "no"))
2632 ;; If `full-directory-p', we just say `ls -l FILENAME'.
2633 ;; Else we chdir to the parent directory, then say `ls -ld BASENAME'.
2634 (if full-directory-p
2637 (format "%s %s %s 2>/dev/null"
2638 (tramp-get-ls-command v)
2642 (tramp-shell-quote-argument (concat localname ".")))))
2643 (tramp-barf-unless-okay
2645 (format "cd %s" (tramp-shell-quote-argument
2646 (tramp-run-real-handler
2647 'file-name-directory (list localname))))
2649 (tramp-shell-quote-argument
2650 (tramp-run-real-handler 'file-name-directory (list localname))))
2654 (tramp-get-ls-command v)
2658 (tramp-run-real-handler
2659 'file-name-nondirectory (list localname)))))
2661 (tramp-shell-quote-argument
2662 (tramp-run-real-handler
2663 'file-name-nondirectory (list localname)))))))
2664 (let ((beg (point)))
2665 ;; We cannot use `insert-buffer-substring' because the Tramp
2666 ;; buffer changes its contents before insertion due to calling
2667 ;; `expand-file' and alike.
2669 (with-current-buffer (tramp-get-buffer v)
2672 ;; Check for "--dired" output.
2674 (when (looking-at "//SUBDIRED//")
2676 (when (looking-at "//DIRED//\\s-+")
2677 (let ((databeg (match-end 0))
2678 (end (point-at-eol)))
2679 ;; Now read the numeric positions of file names.
2681 (while (< (point) end)
2682 (let ((start (+ beg (read (current-buffer))))
2683 (end (+ beg (read (current-buffer)))))
2684 (if (memq (char-after end) '(?\n ?\ ))
2685 ;; End is followed by \n or by " -> ".
2686 (put-text-property start end 'dired-filename t))))))
2687 ;; Remove trailing lines.
2688 (goto-char (point-at-bol))
2689 (while (looking-at "//")
2691 (delete-region (match-beginning 0) (point)))
2693 ;; Some busyboxes are reluctant to discard colors.
2694 (unless (string-match "color" (tramp-get-connection-property v "ls" ""))
2696 (while (re-search-forward tramp-color-escape-sequence-regexp nil t)
2697 (replace-match "")))
2699 ;; The inserted file could be from somewhere else.
2700 (when (and (not wildcard) (not full-directory-p))
2701 (goto-char (point-max))
2702 (when (file-symlink-p filename)
2703 (goto-char (search-backward "->" beg 'noerror)))
2705 (if (zerop (length (file-name-nondirectory filename)))
2707 (file-name-nondirectory filename))
2709 (replace-match (file-relative-name filename) t))
2711 (goto-char (point-max))))))
2713 ;; Canonicalization of file names.
2715 (defun tramp-sh-handle-expand-file-name (name &optional dir)
2716 "Like `expand-file-name' for Tramp files.
2717 If the localname part of the given filename starts with \"/../\" then
2718 the result will be a local, non-Tramp, filename."
2719 ;; If DIR is not given, use DEFAULT-DIRECTORY or "/".
2720 (setq dir (or dir default-directory "/"))
2721 ;; Unless NAME is absolute, concat DIR and NAME.
2722 (unless (file-name-absolute-p name)
2723 (setq name (concat (file-name-as-directory dir) name)))
2724 ;; If NAME is not a Tramp file, run the real handler.
2725 (if (not (tramp-connectable-p name))
2726 (tramp-run-real-handler 'expand-file-name (list name nil))
2728 (with-parsed-tramp-file-name name nil
2729 (unless (tramp-run-real-handler 'file-name-absolute-p (list localname))
2730 (setq localname (concat "~/" localname)))
2731 ;; Tilde expansion if necessary. This needs a shell which
2732 ;; groks tilde expansion! The function `tramp-find-shell' is
2733 ;; supposed to find such a shell on the remote host. Please
2734 ;; tell me about it when this doesn't work on your system.
2735 (when (string-match "\\`\\(~[^/]*\\)\\(.*\\)\\'" localname)
2736 (let ((uname (match-string 1 localname))
2737 (fname (match-string 2 localname)))
2738 ;; We cannot simply apply "~/", because under sudo "~/" is
2739 ;; expanded to the local user home directory but to the
2740 ;; root home directory. On the other hand, using always
2741 ;; the default user name for tilde expansion is not
2742 ;; appropriate either, because ssh and companions might
2743 ;; use a user name from the config file.
2744 (when (and (string-equal uname "~")
2745 (string-match "\\`su\\(do\\)?\\'" method))
2746 (setq uname (concat uname user)))
2748 (with-tramp-connection-property v uname
2750 v (format "cd %s; pwd" (tramp-shell-quote-argument uname)))
2751 (with-current-buffer (tramp-get-buffer v)
2752 (goto-char (point-min))
2753 (buffer-substring (point) (point-at-eol)))))
2754 (setq localname (concat uname fname))))
2755 ;; There might be a double slash, for example when "~/"
2756 ;; expands to "/". Remove this.
2757 (while (string-match "//" localname)
2758 (setq localname (replace-match "/" t t localname)))
2759 ;; No tilde characters in file name, do normal
2760 ;; `expand-file-name' (this does "/./" and "/../"). We bind
2761 ;; `directory-sep-char' here for XEmacs on Windows, which would
2762 ;; otherwise use backslash. `default-directory' is bound,
2763 ;; because on Windows there would be problems with UNC shares or
2765 (let ((directory-sep-char ?/)
2766 (default-directory (tramp-compat-temporary-file-directory)))
2767 (tramp-make-tramp-file-name
2769 (tramp-drop-volume-letter
2770 (tramp-run-real-handler
2771 'expand-file-name (list localname)))
2774 ;;; Remote commands:
2776 (defun tramp-sh-handle-executable-find (command)
2777 "Like `executable-find' for Tramp files."
2778 (with-parsed-tramp-file-name default-directory nil
2779 (tramp-find-executable v command (tramp-get-remote-path v) t)))
2781 (defun tramp-process-sentinel (proc event)
2782 "Flush file caches."
2783 (unless (memq (process-status proc) '(run open))
2784 (let ((vec (tramp-get-connection-property proc "vector" nil)))
2786 (tramp-message vec 5 "Sentinel called: `%s' `%s'" proc event)
2787 (tramp-flush-connection-property proc)
2788 (tramp-flush-directory-property vec "")))))
2790 ;; We use BUFFER also as connection buffer during setup. Because of
2791 ;; this, its original contents must be saved, and restored once
2792 ;; connection has been setup.
2793 (defun tramp-sh-handle-start-file-process (name buffer program &rest args)
2794 "Like `start-file-process' for Tramp files."
2795 (with-parsed-tramp-file-name default-directory nil
2796 ;; When PROGRAM is nil, we just provide a tty.
2798 (when (stringp program)
2799 (format "cd %s; exec env PS1=%s %s"
2800 (tramp-shell-quote-argument localname)
2801 ;; Use a human-friendly prompt, for example for `shell'.
2802 (tramp-shell-quote-argument
2804 (file-remote-p default-directory)
2805 tramp-initial-end-of-output))
2806 (mapconcat 'tramp-shell-quote-argument
2807 (cons program args) " "))))
2808 (tramp-process-connection-type
2809 (or (null program) tramp-process-connection-type))
2810 (bmp (and (buffer-live-p buffer) (buffer-modified-p buffer)))
2815 ;; BUFFER can be nil. We use a temporary buffer.
2816 (setq buffer (generate-new-buffer tramp-temp-buffer-name)))
2817 (while (get-process name1)
2818 ;; NAME must be unique as process name.
2820 name1 (format "%s<%d>" name i)))
2822 ;; Set the new process properties.
2823 (tramp-set-connection-property v "process-name" name)
2824 (tramp-set-connection-property v "process-buffer" buffer)
2826 (with-current-buffer (tramp-get-connection-buffer v)
2828 ;; We catch this event. Otherwise, `start-process' could
2829 ;; be called on the local host.
2832 ;; Activate narrowing in order to save BUFFER
2833 ;; contents. Clear also the modification time;
2834 ;; otherwise we might be interrupted by
2835 ;; `verify-visited-file-modtime'.
2836 (let ((buffer-undo-list t)
2837 (buffer-read-only nil)
2839 (clear-visited-file-modtime)
2840 (narrow-to-region (point-max) (point-max))
2841 ;; We call `tramp-maybe-open-connection', in order
2842 ;; to cleanup the prompt afterwards.
2844 (tramp-maybe-open-connection v)
2846 (delete-region mark (point))
2847 (narrow-to-region (point-max) (point-max))
2850 ;; Send the command.
2851 (tramp-send-command v command nil t) ; nooutput
2852 ;; Check, whether a pty is associated.
2853 (unless (tramp-compat-process-get
2854 (tramp-get-connection-process v) 'remote-tty)
2857 "pty association is not supported for `%s'" name))))
2858 (let ((p (tramp-get-connection-process v)))
2859 ;; Set query flag for this process. We ignore errors,
2860 ;; because the process could have finished already.
2862 (tramp-compat-set-process-query-on-exit-flag p t))
2867 (if (string-match tramp-temp-buffer-name (buffer-name))
2869 (set-process-buffer (tramp-get-connection-process v) nil)
2870 (kill-buffer (current-buffer)))
2871 (set-buffer-modified-p bmp))
2872 (tramp-set-connection-property v "process-name" nil)
2873 (tramp-set-connection-property v "process-buffer" nil))))))
2875 (defun tramp-sh-handle-process-file
2876 (program &optional infile destination display &rest args)
2877 "Like `process-file' for Tramp files."
2878 ;; The implementation is not complete yet.
2879 (when (and (numberp destination) (zerop destination))
2880 (error "Implementation does not handle immediate return"))
2882 (with-parsed-tramp-file-name default-directory nil
2883 (let (command input tmpinput stderr tmpstderr outbuf ret)
2885 (setq command (mapconcat 'tramp-shell-quote-argument
2886 (cons program args) " "))
2889 (setq input "/dev/null")
2890 (setq infile (expand-file-name infile))
2891 (if (tramp-equal-remote default-directory infile)
2892 ;; INFILE is on the same remote host.
2893 (setq input (with-parsed-tramp-file-name infile nil localname))
2894 ;; INFILE must be copied to remote host.
2895 (setq input (tramp-make-tramp-temp-file v)
2896 tmpinput (tramp-make-tramp-file-name method user host input))
2897 (copy-file infile tmpinput t)))
2898 (when input (setq command (format "%s <%s" command input)))
2900 ;; Determine output.
2903 ((bufferp destination)
2904 (setq outbuf destination))
2906 ((stringp destination)
2907 (setq outbuf (get-buffer-create destination)))
2908 ;; (REAL-DESTINATION ERROR-DESTINATION)
2909 ((consp destination)
2912 ((bufferp (car destination))
2913 (setq outbuf (car destination)))
2914 ((stringp (car destination))
2915 (setq outbuf (get-buffer-create (car destination))))
2917 (setq outbuf (current-buffer))))
2920 ((stringp (cadr destination))
2921 (setcar (cdr destination) (expand-file-name (cadr destination)))
2922 (if (tramp-equal-remote default-directory (cadr destination))
2923 ;; stderr is on the same remote host.
2924 (setq stderr (with-parsed-tramp-file-name
2925 (cadr destination) nil localname))
2926 ;; stderr must be copied to remote host. The temporary
2927 ;; file must be deleted after execution.
2928 (setq stderr (tramp-make-tramp-temp-file v)
2929 tmpstderr (tramp-make-tramp-file-name
2930 method user host stderr))))
2931 ;; stderr to be discarded.
2932 ((null (cadr destination))
2933 (setq stderr "/dev/null"))))
2936 (setq outbuf (current-buffer))))
2937 (when stderr (setq command (format "%s 2>%s" command stderr)))
2939 ;; Send the command. It might not return in time, so we protect
2940 ;; it. Call it in a subshell, in order to preserve working
2945 (if (tramp-send-command-and-check
2946 v (format "\\cd %s; %s"
2947 (tramp-shell-quote-argument localname)
2951 ;; We should show the output anyway.
2953 (with-current-buffer outbuf
2955 (with-current-buffer (tramp-get-connection-buffer v)
2957 (when display (display-buffer outbuf))))
2958 ;; When the user did interrupt, we should do it also. We use
2959 ;; return code -1 as marker.
2961 (kill-buffer (tramp-get-connection-buffer v))
2965 (kill-buffer (tramp-get-connection-buffer v))
2968 ;; Provide error file.
2969 (when tmpstderr (rename-file tmpstderr (cadr destination) t))
2971 ;; Cleanup. We remove all file cache values for the connection,
2972 ;; because the remote process could have changed them.
2973 (when tmpinput (delete-file tmpinput))
2975 ;; `process-file-side-effects' has been introduced with GNU
2976 ;; Emacs 23.2. If set to `nil', no remote file will be changed
2977 ;; by `program'. If it doesn't exist, we assume its default
2979 (unless (and (boundp 'process-file-side-effects)
2980 (not (symbol-value 'process-file-side-effects)))
2981 (tramp-flush-directory-property v ""))
2983 ;; Return exit status.
2988 (defun tramp-sh-handle-file-local-copy (filename)
2989 "Like `file-local-copy' for Tramp files."
2990 (with-parsed-tramp-file-name filename nil
2991 (unless (file-exists-p filename)
2994 "Cannot make local copy of non-existing file `%s'" filename))
2996 (let* ((size (nth 7 (file-attributes (file-truename filename))))
2997 (rem-enc (tramp-get-inline-coding v "remote-encoding" size))
2998 (loc-dec (tramp-get-inline-coding v "local-decoding" size))
2999 (tmpfile (tramp-compat-make-temp-file filename)))
3003 ;; `copy-file' handles direct copy and out-of-band methods.
3004 ((or (tramp-local-host-p v)
3005 (tramp-method-out-of-band-p v size))
3006 (copy-file filename tmpfile t t))
3008 ;; Use inline encoding for file transfer.
3011 (with-tramp-progress-reporter
3012 v 3 (format "Encoding remote file %s" filename)
3013 (tramp-barf-unless-okay
3014 v (format rem-enc (tramp-shell-quote-argument localname))
3015 "Encoding remote file failed"))
3017 (if (functionp loc-dec)
3018 ;; If local decoding is a function, we call it. We
3019 ;; must disable multibyte, because
3020 ;; `uudecode-decode-region' doesn't handle it
3023 (set-buffer-multibyte nil)
3024 (insert-buffer-substring (tramp-get-buffer v))
3025 (with-tramp-progress-reporter
3026 v 3 (format "Decoding remote file %s with function %s"
3028 (funcall loc-dec (point-min) (point-max))
3029 ;; Unset `file-name-handler-alist'. Otherwise,
3030 ;; epa-file gets confused.
3031 (let (file-name-handler-alist
3032 (coding-system-for-write 'binary))
3033 (write-region (point-min) (point-max) tmpfile))))
3035 ;; If tramp-decoding-function is not defined for this
3036 ;; method, we invoke tramp-decoding-command instead.
3037 (let ((tmpfile2 (tramp-compat-make-temp-file filename)))
3038 ;; Unset `file-name-handler-alist'. Otherwise,
3039 ;; epa-file gets confused.
3040 (let (file-name-handler-alist
3041 (coding-system-for-write 'binary))
3042 (write-region (point-min) (point-max) tmpfile2))
3043 (with-tramp-progress-reporter
3044 v 3 (format "Decoding remote file %s with command %s"
3047 (tramp-call-local-coding-command
3048 loc-dec tmpfile2 tmpfile)
3049 (delete-file tmpfile2)))))
3051 ;; Set proper permissions.
3052 (set-file-modes tmpfile (tramp-default-file-modes filename))
3053 ;; Set local user ownership.
3054 (tramp-set-file-uid-gid tmpfile)))
3056 ;; Oops, I don't know what to do.
3058 v 'file-error "Wrong method specification for `%s'" method)))
3062 (delete-file tmpfile)
3063 (signal (car err) (cdr err))))
3065 (run-hooks 'tramp-handle-file-local-copy-hook)
3068 ;; This is needed for XEmacs only. Code stolen from files.el.
3069 (defun tramp-sh-handle-insert-file-contents-literally
3070 (filename &optional visit beg end replace)
3071 "Like `insert-file-contents-literally' for Tramp files."
3072 (let ((format-alist nil)
3073 (after-insert-file-functions nil)
3074 (coding-system-for-read 'no-conversion)
3075 (coding-system-for-write 'no-conversion)
3076 (find-buffer-file-type-function
3077 (if (fboundp 'find-buffer-file-type)
3078 (symbol-function 'find-buffer-file-type)
3080 (inhibit-file-name-handlers '(jka-compr-handler image-file-handler))
3081 (inhibit-file-name-operation 'insert-file-contents))
3084 (fset 'find-buffer-file-type (lambda (filename) t))
3085 (insert-file-contents filename visit beg end replace))
3087 (if find-buffer-file-type-function
3088 (fset 'find-buffer-file-type find-buffer-file-type-function)
3089 (fmakunbound 'find-buffer-file-type)))))
3091 (defun tramp-sh-handle-make-auto-save-file-name ()
3092 "Like `make-auto-save-file-name' for Tramp files.
3093 Returns a file name in `tramp-auto-save-directory' for autosaving this file."
3094 (let ((tramp-auto-save-directory tramp-auto-save-directory)
3096 (tramp-subst-strs-in-string
3103 (buffer-file-name))))
3104 ;; File name must be unique. This is ensured with Emacs 22 (see
3105 ;; UNIQUIFY element of `auto-save-file-name-transforms'); but for
3106 ;; all other cases we must do it ourselves.
3107 (when (boundp 'auto-save-file-name-transforms)
3110 (when (and (string-match (car x) buffer-file-name)
3111 (not (car (cddr x))))
3112 (setq tramp-auto-save-directory
3113 (or tramp-auto-save-directory
3114 (tramp-compat-temporary-file-directory)))))
3115 (symbol-value 'auto-save-file-name-transforms)))
3116 ;; Create directory.
3117 (when tramp-auto-save-directory
3118 (setq buffer-file-name
3119 (expand-file-name buffer-file-name tramp-auto-save-directory))
3120 (unless (file-exists-p tramp-auto-save-directory)
3121 (make-directory tramp-auto-save-directory t)))
3122 ;; Run plain `make-auto-save-file-name'. There might be an advice when
3123 ;; it is not a magic file name operation (since Emacs 22).
3124 ;; We must deactivate it temporarily.
3125 (if (not (ad-is-active 'make-auto-save-file-name))
3126 (tramp-run-real-handler 'make-auto-save-file-name nil)
3128 (ad-deactivate 'make-auto-save-file-name)
3130 (tramp-run-real-handler 'make-auto-save-file-name nil)
3131 (ad-activate 'make-auto-save-file-name)))))
3133 ;; CCC grok LOCKNAME
3134 (defun tramp-sh-handle-write-region
3135 (start end filename &optional append visit lockname confirm)
3136 "Like `write-region' for Tramp files."
3137 (setq filename (expand-file-name filename))
3138 (with-parsed-tramp-file-name filename nil
3139 ;; Following part commented out because we don't know what to do about
3140 ;; file locking, and it does not appear to be a problem to ignore it.
3141 ;; Ange-ftp ignores it, too.
3142 ;; (when (and lockname (stringp lockname))
3143 ;; (setq lockname (expand-file-name lockname)))
3144 ;; (unless (or (eq lockname nil)
3145 ;; (string= lockname filename))
3147 ;; "tramp-sh-handle-write-region: LOCKNAME must be nil or equal FILENAME"))
3149 ;; XEmacs takes a coding system as the seventh argument, not `confirm'.
3150 (when (and (not (featurep 'xemacs)) confirm (file-exists-p filename))
3151 (unless (y-or-n-p (format "File %s exists; overwrite anyway? " filename))
3152 (tramp-error v 'file-error "File not overwritten")))
3154 (let ((uid (or (nth 2 (tramp-compat-file-attributes filename 'integer))
3155 (tramp-get-remote-uid v 'integer)))
3156 (gid (or (nth 3 (tramp-compat-file-attributes filename 'integer))
3157 (tramp-get-remote-gid v 'integer))))
3159 (if (and (tramp-local-host-p v)
3160 ;; `file-writable-p' calls `file-expand-file-name'. We
3161 ;; cannot use `tramp-run-real-handler' therefore.
3162 (let (file-name-handler-alist)
3164 (file-writable-p (file-name-directory localname))
3165 (or (file-directory-p localname)
3166 (file-writable-p localname)))))
3167 ;; Short track: if we are on the local host, we can run directly.
3168 (tramp-run-real-handler
3170 (list start end localname append 'no-message lockname confirm))
3172 (let* ((modes (save-excursion (tramp-default-file-modes filename)))
3173 ;; We use this to save the value of
3174 ;; `last-coding-system-used' after writing the tmp
3175 ;; file. At the end of the function, we set
3176 ;; `last-coding-system-used' to this saved value. This
3177 ;; way, any intermediary coding systems used while
3178 ;; talking to the remote shell or suchlike won't hose
3179 ;; this variable. This approach was snarfed from
3182 ;; Write region into a tmp file. This isn't really
3183 ;; needed if we use an encoding function, but currently
3184 ;; we use it always because this makes the logic
3185 ;; simpler. We must also set `temporary-file-directory',
3186 ;; because it could point to a remote directory.
3187 (temporary-file-directory
3188 (tramp-compat-temporary-file-directory))
3189 (tmpfile (or tramp-temp-buffer-file-name
3190 (tramp-compat-make-temp-file filename))))
3192 ;; If `append' is non-nil, we copy the file locally, and let
3193 ;; the native `write-region' implementation do the job.
3194 (when append (copy-file filename tmpfile 'ok))
3196 ;; We say `no-message' here because we don't want the
3197 ;; visited file modtime data to be clobbered from the temp
3198 ;; file. We call `set-visited-file-modtime' ourselves later
3199 ;; on. We must ensure that `file-coding-system-alist'
3200 ;; matches `tmpfile'.
3201 (let (file-name-handler-alist
3202 (file-coding-system-alist
3203 (tramp-find-file-name-coding-system-alist filename tmpfile)))
3205 (tramp-run-real-handler
3207 (list start end tmpfile append 'no-message lockname confirm))
3209 (setq tramp-temp-buffer-file-name nil)
3210 (delete-file tmpfile)
3211 (signal (car err) (cdr err))))
3213 ;; Now, `last-coding-system-used' has the right value. Remember it.
3214 (when (boundp 'last-coding-system-used)
3215 (setq coding-system-used
3216 (symbol-value 'last-coding-system-used))))
3218 ;; The permissions of the temporary file should be set. If
3219 ;; filename does not exist (eq modes nil) it has been
3220 ;; renamed to the backup file. This case `save-buffer'
3221 ;; handles permissions.
3222 ;; Ensure that it is still readable.
3226 (logior (or modes 0) (tramp-compat-octal-to-decimal "0400"))))
3228 ;; This is a bit lengthy due to the different methods
3229 ;; possible for file transfer. First, we check whether the
3230 ;; method uses an rcp program. If so, we call it.
3231 ;; Otherwise, both encoding and decoding command must be
3232 ;; specified. However, if the method _also_ specifies an
3233 ;; encoding function, then that is used for encoding the
3234 ;; contents of the tmp file.
3235 (let* ((size (nth 7 (file-attributes tmpfile)))
3236 (rem-dec (tramp-get-inline-coding v "remote-decoding" size))
3237 (loc-enc (tramp-get-inline-coding v "local-encoding" size)))
3239 ;; `copy-file' handles direct copy and out-of-band methods.
3240 ((or (tramp-local-host-p v)
3241 (tramp-method-out-of-band-p v size))
3242 (if (and (not (stringp start))
3243 (= (or end (point-max)) (point-max))
3244 (= (or start (point-min)) (point-min))
3245 (tramp-get-method-parameter
3246 method 'tramp-copy-keep-tmpfile))
3248 (setq tramp-temp-buffer-file-name tmpfile)
3250 ;; We keep the local file for performance
3251 ;; reasons, useful for "rsync".
3252 (copy-file tmpfile filename t)
3254 (setq tramp-temp-buffer-file-name nil)
3255 (delete-file tmpfile)
3256 (signal (car err) (cdr err)))))
3257 (setq tramp-temp-buffer-file-name nil)
3258 ;; Don't rename, in order to keep context in SELinux.
3260 (copy-file tmpfile filename t)
3261 (delete-file tmpfile))))
3263 ;; Use inline file transfer.
3268 (set-buffer-multibyte nil)
3269 ;; Use encoding function or command.
3270 (if (functionp loc-enc)
3271 (with-tramp-progress-reporter
3272 v 3 (format "Encoding region using function `%s'"
3274 (let ((coding-system-for-read 'binary))
3275 (insert-file-contents-literally tmpfile))
3276 ;; The following `let' is a workaround for the
3277 ;; base64.el that comes with pgnus-0.84. If
3278 ;; both of the following conditions are
3279 ;; satisfied, it tries to write to a local
3280 ;; file in default-directory, but at this
3281 ;; point, default-directory is remote.
3282 ;; (`call-process-region' can't write to
3283 ;; remote files, it seems.) The file in
3284 ;; question is a tmp file anyway.
3285 (let ((default-directory
3286 (tramp-compat-temporary-file-directory)))
3287 (funcall loc-enc (point-min) (point-max))))
3289 (with-tramp-progress-reporter
3290 v 3 (format "Encoding region using command `%s'"
3292 (unless (zerop (tramp-call-local-coding-command
3296 (concat "Cannot write to `%s', "
3297 "local encoding command `%s' failed")
3298 filename loc-enc))))
3300 ;; Send buffer into remote decoding command which
3301 ;; writes to remote file. Because this happens on
3302 ;; the remote host, we cannot use the function.
3303 (with-tramp-progress-reporter
3305 (format "Decoding region into remote file %s" filename)
3306 (goto-char (point-max))
3307 (unless (bolp) (newline))
3311 (concat rem-dec " <<'EOF'\n%sEOF")
3312 (tramp-shell-quote-argument localname)
3314 (tramp-barf-unless-okay
3316 "Couldn't write region to `%s', decode using `%s' failed"
3318 ;; When `file-precious-flag' is set, the region is
3319 ;; written to a temporary file. Check that the
3320 ;; checksum is equal to that from the local tmpfile.
3321 (when file-precious-flag
3324 ;; cksum runs locally, if possible.
3325 (zerop (tramp-compat-call-process "cksum" tmpfile t))
3326 ;; cksum runs remotely.
3327 (tramp-send-command-and-check
3330 "cksum <%s" (tramp-shell-quote-argument localname)))
3331 ;; ... they are different.
3335 (with-current-buffer (tramp-get-buffer v)
3339 (concat "Couldn't write region to `%s',"
3340 " decode using `%s' failed")
3341 filename rem-dec)))))
3344 (delete-file tmpfile)))
3346 ;; That's not expected.
3350 (concat "Method `%s' should specify both encoding and "
3351 "decoding command or an rcp program")
3354 ;; Make `last-coding-system-used' have the right value.
3355 (when coding-system-used
3356 (set 'last-coding-system-used coding-system-used))))
3358 (tramp-flush-file-property v (file-name-directory localname))
3359 (tramp-flush-file-property v localname)
3361 ;; We must protect `last-coding-system-used', now we have set it
3362 ;; to its correct value.
3363 (let (last-coding-system-used (need-chown t))
3364 ;; Set file modification time.
3365 (when (or (eq visit t) (stringp visit))
3366 (let ((file-attr (tramp-compat-file-attributes filename 'integer)))
3367 (set-visited-file-modtime
3368 ;; We must pass modtime explicitly, because filename can
3369 ;; be different from (buffer-file-name), f.e. if
3370 ;; `file-precious-flag' is set.
3372 (when (and (= (nth 2 file-attr) uid)
3373 (= (nth 3 file-attr) gid))
3374 (setq need-chown nil))))
3376 ;; Set the ownership.
3378 (tramp-set-file-uid-gid filename uid gid))
3379 (when (or (eq visit t) (null visit) (stringp visit))
3380 (tramp-message v 0 "Wrote %s" filename))
3381 (run-hooks 'tramp-handle-write-region-hook)))))
3383 (defvar tramp-vc-registered-file-names nil
3384 "List used to collect file names, which are checked during `vc-registered'.")
3386 ;; VC backends check for the existence of various different special
3387 ;; files. This is very time consuming, because every single check
3388 ;; requires a remote command (the file cache must be invalidated).
3389 ;; Therefore, we apply a kind of optimization. We install the file
3390 ;; name handler `tramp-vc-file-name-handler', which does nothing but
3391 ;; remembers all file names for which `file-exists-p' or
3392 ;; `file-readable-p' has been applied. A first run of `vc-registered'
3393 ;; is performed. Afterwards, a script is applied for all collected
3394 ;; file names, using just one remote command. The result of this
3395 ;; script is used to fill the file cache with actual values. Now we
3396 ;; can reset the file name handlers, and we make a second run of
3397 ;; `vc-registered', which returns the expected result without sending
3398 ;; any other remote command.
3399 (defun tramp-sh-handle-vc-registered (file)
3400 "Like `vc-registered' for Tramp files."
3401 (tramp-compat-with-temp-message ""
3402 (with-parsed-tramp-file-name file nil
3403 (with-tramp-progress-reporter
3404 v 3 (format "Checking `vc-registered' for %s" file)
3406 ;; There could be new files, created by the vc backend. We
3407 ;; cannot reuse the old cache entries, therefore.
3408 (let (tramp-vc-registered-file-names
3409 (remote-file-name-inhibit-cache (current-time))
3410 (file-name-handler-alist
3411 `((,tramp-file-name-regexp . tramp-vc-file-name-handler))))
3413 ;; Here we collect only file names, which need an operation.
3414 (ignore-errors (tramp-run-real-handler 'vc-registered (list file)))
3415 (tramp-message v 10 "\n%s" tramp-vc-registered-file-names)
3417 ;; Send just one command, in order to fill the cache.
3418 (when tramp-vc-registered-file-names
3419 (tramp-maybe-send-script
3421 (format tramp-vc-registered-read-file-names
3422 (tramp-get-file-exists-command v)
3423 (format "%s -r" (tramp-get-test-command v)))
3424 "tramp_vc_registered_read_file_names")
3428 (tramp-send-command-and-read
3431 "tramp_vc_registered_read_file_names <<'EOF'\n%s\nEOF\n"
3432 (mapconcat 'tramp-shell-quote-argument
3433 tramp-vc-registered-file-names
3436 (tramp-set-file-property
3437 v (car elt) (cadr elt) (cadr (cdr elt))))))
3439 ;; Second run. Now all `file-exists-p' or `file-readable-p'
3440 ;; calls shall be answered from the file cache. We unset
3441 ;; `process-file-side-effects' in order to keep the cache when
3442 ;; `process-file' calls appear.
3443 (let (process-file-side-effects)
3444 (tramp-run-real-handler 'vc-registered (list file)))))))
3446 ;;;###tramp-autoload
3447 (defun tramp-sh-file-name-handler (operation &rest args)
3448 "Invoke remote-shell Tramp file name handler.
3449 Fall back to normal file name handler if no Tramp handler exists."
3450 (when (and tramp-locked (not tramp-locker))
3451 (setq tramp-locked nil)
3452 (signal 'file-error (list "Forbidden reentrant call of Tramp")))
3453 (let ((tl tramp-locked))
3456 (setq tramp-locked t)
3457 (let ((tramp-locker t))
3459 (let ((fn (assoc operation tramp-sh-file-name-handler-alist)))
3461 (apply (cdr fn) args)
3462 (tramp-run-real-handler operation args))))))
3463 (setq tramp-locked tl))))
3465 (defun tramp-vc-file-name-handler (operation &rest args)
3466 "Invoke special file name handler, which collects files to be handled."
3469 (tramp-replace-environment-variables
3470 (apply 'tramp-file-name-for-operation operation args)))
3471 (fn (assoc operation tramp-sh-file-name-handler-alist)))
3472 (with-parsed-tramp-file-name filename nil
3474 ;; That's what we want: file names, for which checks are
3475 ;; applied. We assume that VC uses only `file-exists-p' and
3476 ;; `file-readable-p' checks; otherwise we must extend the
3477 ;; list. We do not perform any action, but return nil, in
3478 ;; order to keep `vc-registered' running.
3479 ((and fn (memq operation '(file-exists-p file-readable-p)))
3480 (add-to-list 'tramp-vc-registered-file-names localname 'append)
3482 ;; `process-file' and `start-file-process' shall be ignored.
3483 ((and fn (eq operation 'process-file) 0))
3484 ((and fn (eq operation 'start-file-process) nil))
3485 ;; Tramp file name handlers like `expand-file-name'. They
3487 (fn (save-match-data (apply (cdr fn) args)))
3488 ;; Default file name handlers, we don't care.
3489 (t (tramp-run-real-handler operation args)))))))
3491 ;;; Internal Functions:
3493 (defun tramp-maybe-send-script (vec script name)
3494 "Define in remote shell function NAME implemented as SCRIPT.
3495 Only send the definition if it has not already been done."
3496 ;; We cannot let-bind (tramp-get-connection-process vec) because it
3498 (let ((scripts (tramp-get-connection-property
3499 (tramp-get-connection-process vec) "scripts" nil)))
3500 (unless (member name scripts)
3501 (with-tramp-progress-reporter vec 5 (format "Sending script `%s'" name)
3502 ;; The script could contain a call of Perl. This is masked with `%s'.
3503 (tramp-barf-unless-okay
3505 (format "%s () {\n%s\n}" name
3506 (format script (tramp-get-remote-perl vec)))
3507 "Script %s sending failed" name)
3508 (tramp-set-connection-property
3509 (tramp-get-connection-process vec) "scripts" (cons name scripts))))))
3511 (defun tramp-set-auto-save ()
3512 (when (and ;; ange-ftp has its own auto-save mechanism
3513 (eq (tramp-find-foreign-file-name-handler (buffer-file-name))
3514 'tramp-sh-file-name-handler)
3516 (auto-save-mode 1)))
3517 (add-hook 'find-file-hooks 'tramp-set-auto-save t)
3518 (add-hook 'tramp-unload-hook
3520 (remove-hook 'find-file-hooks 'tramp-set-auto-save)))
3522 (defun tramp-run-test (switch filename)
3523 "Run `test' on the remote system, given a SWITCH and a FILENAME.
3524 Returns the exit code of the `test' program."
3525 (with-parsed-tramp-file-name filename nil
3526 (tramp-send-command-and-check
3530 (tramp-get-test-command v)
3532 (tramp-shell-quote-argument localname)))))
3534 (defun tramp-run-test2 (format-string file1 file2)
3535 "Run `test'-like program on the remote system, given FILE1, FILE2.
3536 FORMAT-STRING contains the program name, switches, and place holders.
3537 Returns the exit code of the `test' program. Barfs if the methods,
3538 hosts, or files, disagree."
3539 (unless (tramp-equal-remote file1 file2)
3540 (with-parsed-tramp-file-name (if (tramp-tramp-file-p file1) file1 file2) nil
3543 "tramp-run-test2 only implemented for same method, user, host")))
3544 (with-parsed-tramp-file-name file1 v1
3545 (with-parsed-tramp-file-name file1 v2
3546 (tramp-send-command-and-check
3548 (format format-string
3549 (tramp-shell-quote-argument v1-localname)
3550 (tramp-shell-quote-argument v2-localname))))))
3552 (defun tramp-find-executable
3553 (vec progname dirlist &optional ignore-tilde ignore-path)
3554 "Searches for PROGNAME in $PATH and all directories mentioned in DIRLIST.
3555 First arg VEC specifies the connection, PROGNAME is the program
3556 to search for, and DIRLIST gives the list of directories to
3557 search. If IGNORE-TILDE is non-nil, directory names starting
3558 with `~' will be ignored. If IGNORE-PATH is non-nil, searches
3561 Returns the absolute file name of PROGNAME, if found, and nil otherwise.
3563 This function expects to be in the right *tramp* buffer."
3564 (with-current-buffer (tramp-get-connection-buffer vec)
3566 ;; Check whether the executable is in $PATH. "which(1)" does not
3567 ;; report always a correct error code; therefore we check the
3568 ;; number of words it returns.
3570 (tramp-send-command vec (format "which \\%s | wc -w" progname))
3571 (goto-char (point-min))
3572 (if (looking-at "^\\s-*1$")
3573 (setq result (concat "\\" progname))))
3576 ;; Remove all ~/foo directories from dirlist. In XEmacs,
3577 ;; `remove' is in CL, and we want to avoid CL dependencies.
3580 (setq d (car dirlist))
3581 (setq dirlist (cdr dirlist))
3582 (unless (char-equal ?~ (aref d 0))
3583 (setq newdl (cons d newdl))))
3584 (setq dirlist (nreverse newdl))))
3587 (format (concat "while read d; "
3588 "do if test -x $d/%s -a -f $d/%s; "
3589 "then echo tramp_executable $d/%s; "
3590 "break; fi; done <<'EOF'\n"
3592 progname progname progname (mapconcat 'identity dirlist "\n")))
3593 (goto-char (point-max))
3594 (when (search-backward "tramp_executable " nil t)
3595 (skip-chars-forward "^ ")
3596 (skip-chars-forward " ")
3597 (setq result (buffer-substring (point) (point-at-eol)))))
3600 (defun tramp-set-remote-path (vec)
3601 "Sets the remote environment PATH to existing directories.
3602 I.e., for each directory in `tramp-remote-path', it is tested
3603 whether it exists and if so, it is added to the environment
3605 (tramp-message vec 5 (format "Setting $PATH environment variable"))
3607 vec (format "PATH=%s; export PATH"
3608 (mapconcat 'identity (tramp-get-remote-path vec) ":"))))
3610 ;; ------------------------------------------------------------
3611 ;; -- Communication with external shell --
3612 ;; ------------------------------------------------------------
3614 (defun tramp-find-file-exists-command (vec)
3615 "Find a command on the remote host for checking if a file exists.
3616 Here, we are looking for a command which has zero exit status if the
3617 file exists and nonzero exit status otherwise."
3618 (let ((existing "/")
3620 (tramp-shell-quote-argument "/ this file does not exist "))
3622 ;; The algorithm is as follows: we try a list of several commands.
3623 ;; For each command, we first run `$cmd /' -- this should return
3624 ;; true, as the root directory always exists. And then we run
3625 ;; `$cmd /this\ file\ does\ not\ exist ', hoping that the file indeed
3626 ;; does not exist. This should return false. We use the first
3627 ;; command we find that seems to work.
3628 ;; The list of commands to try is as follows:
3629 ;; `ls -d' This works on most systems, but NetBSD 1.4
3630 ;; has a bug: `ls' always returns zero exit
3631 ;; status, even for files which don't exist.
3632 ;; `test -e' Some Bourne shells have a `test' builtin
3633 ;; which does not know the `-e' option.
3634 ;; `/bin/test -e' For those, the `test' binary on disk normally
3635 ;; provides the option. Alas, the binary
3636 ;; is sometimes `/bin/test' and sometimes it's
3638 ;; `/usr/bin/test -e' In case `/bin/test' does not exist.
3641 (and (setq result (format "%s -e" (tramp-get-test-command vec)))
3642 (tramp-send-command-and-check
3643 vec (format "%s %s" result existing))
3644 (not (tramp-send-command-and-check
3645 vec (format "%s %s" result nonexistent)))))
3647 (and (setq result "/bin/test -e")
3648 (tramp-send-command-and-check
3649 vec (format "%s %s" result existing))
3650 (not (tramp-send-command-and-check
3651 vec (format "%s %s" result nonexistent)))))
3653 (and (setq result "/usr/bin/test -e")
3654 (tramp-send-command-and-check
3655 vec (format "%s %s" result existing))
3656 (not (tramp-send-command-and-check
3657 vec (format "%s %s" result nonexistent)))))
3659 (and (setq result (format "%s -d" (tramp-get-ls-command vec)))
3660 (tramp-send-command-and-check
3661 vec (format "%s %s" result existing))
3662 (not (tramp-send-command-and-check
3663 vec (format "%s %s" result nonexistent))))))
3665 vec 'file-error "Couldn't find command to check if file exists"))
3668 (defun tramp-open-shell (vec shell)
3669 "Opens shell SHELL."
3670 (with-tramp-progress-reporter
3671 vec 5 (format "Opening remote shell `%s'" shell)
3672 ;; Find arguments for this shell.
3673 (let ((tramp-end-of-output tramp-initial-end-of-output)
3674 (alist tramp-sh-extra-args)
3676 (while (and alist (null extra-args))
3677 (setq item (pop alist))
3678 (when (string-match (car item) shell)
3679 (setq extra-args (cdr item))))
3682 "exec env ENV='' PROMPT_COMMAND='' PS1=%s PS2='' PS3='' %s %s"
3683 (tramp-shell-quote-argument tramp-end-of-output)
3684 shell (or extra-args ""))
3686 (tramp-set-connection-property
3687 (tramp-get-connection-process vec) "remote-shell" shell)
3690 vec (format "PS1=%s" (tramp-shell-quote-argument tramp-end-of-output)) t)
3691 (tramp-send-command vec "PS2=''" t)
3692 (tramp-send-command vec "PS3=''" t)
3693 (tramp-send-command vec "PROMPT_COMMAND=''" t)))
3695 (defun tramp-find-shell (vec)
3696 "Opens a shell on the remote host which groks tilde expansion."
3697 (with-current-buffer (tramp-get-buffer vec)
3698 (let ((default-shell
3700 (tramp-get-connection-property
3701 (tramp-get-connection-process vec) "remote-shell" nil)
3702 (tramp-get-method-parameter
3703 (tramp-file-name-method vec) 'tramp-remote-shell)))
3706 (with-tramp-connection-property vec "remote-shell"
3707 ;; CCC: "root" does not exist always, see QNAP 459.
3708 ;; Which check could we apply instead?
3709 (tramp-send-command vec "echo ~root" t)
3710 (if (or (string-match "^~root$" (buffer-string))
3711 ;; The default shell (ksh93) of OpenSolaris and
3712 ;; Solaris is buggy. We've got reports for
3713 ;; "SunOS 5.10" and "SunOS 5.11" so far.
3714 (string-match (regexp-opt '("SunOS 5.10" "SunOS 5.11"))
3715 (tramp-get-connection-property
3718 (or (tramp-find-executable
3719 vec "bash" (tramp-get-remote-path vec) t t)
3720 (tramp-find-executable
3721 vec "ksh" (tramp-get-remote-path vec) t t)
3722 ;; Maybe it works at least for some other commands.
3728 "Couldn't find a remote shell which groks tilde "
3729 "expansion, using `%s'")
3734 ;; Open a new shell if needed.
3735 (unless (string-equal shell default-shell)
3737 vec 5 "Starting remote shell `%s' for tilde expansion" shell)
3738 (tramp-open-shell vec shell))
3740 ;; Busyboxes tend to behave strange. We check for the existence.
3741 (with-tramp-connection-property vec "busybox"
3742 (tramp-send-command vec (format "%s --version" shell) t)
3743 (let ((case-fold-search t))
3744 (and (string-match "busybox" (buffer-string)) t))))))
3746 ;; Utility functions.
3748 (defun tramp-barf-if-no-shell-prompt (proc timeout &rest error-args)
3749 "Wait for shell prompt and barf if none appears.
3750 Looks at process PROC to see if a shell prompt appears in TIMEOUT
3751 seconds. If not, it produces an error message with the given ERROR-ARGS."
3753 (tramp-wait-for-regexp
3756 "\\(%s\\|%s\\)\\'" shell-prompt-pattern tramp-shell-prompt-pattern))
3757 (apply 'tramp-error-with-buffer nil proc 'file-error error-args)))
3759 (defun tramp-open-connection-setup-interactive-shell (proc vec)
3760 "Set up an interactive shell.
3761 Mainly sets the prompt and the echo correctly. PROC is the shell
3762 process to set up. VEC specifies the connection."
3763 (let ((tramp-end-of-output tramp-initial-end-of-output))
3764 ;; It is useful to set the prompt in the following command because
3765 ;; some people have a setting for $PS1 which /bin/sh doesn't know
3766 ;; about and thus /bin/sh will display a strange prompt. For
3767 ;; example, if $PS1 has "${CWD}" in the value, then ksh will
3768 ;; display the current working directory but /bin/sh will display
3769 ;; a dollar sign. The following command line sets $PS1 to a sane
3770 ;; value, and works under Bourne-ish shells as well as csh-like
3771 ;; shells. Daniel Pittman reports that the unusual positioning of
3772 ;; the single quotes makes it work under `rc', too. We also unset
3773 ;; the variable $ENV because that is read by some sh
3774 ;; implementations (eg, bash when called as sh) on startup; this
3775 ;; way, we avoid the startup file clobbering $PS1. $PROMPT_COMMAND
3776 ;; is another way to set the prompt in /bin/bash, it must be
3777 ;; discarded as well.
3780 (or (tramp-get-connection-property vec "remote-shell" nil)
3781 (tramp-get-method-parameter
3782 (tramp-file-name-method vec) 'tramp-remote-shell)))
3785 (tramp-message vec 5 "Setting up remote shell environment")
3786 (tramp-send-command vec "stty -inlcr -echo kill '^U' erase '^H'" t)
3787 ;; Check whether the echo has really been disabled. Some
3788 ;; implementations, like busybox of embedded GNU/Linux, don't
3789 ;; support disabling.
3790 (tramp-send-command vec "echo foo" t)
3791 (with-current-buffer (process-buffer proc)
3792 (goto-char (point-min))
3793 (when (looking-at "echo foo")
3794 (tramp-set-connection-property proc "remote-echo" t)
3795 (tramp-message vec 5 "Remote echo still on. Ok.")
3796 ;; Make sure backspaces and their echo are enabled and no line
3797 ;; width magic interferes with them.
3798 (tramp-send-command vec "stty icanon erase ^H cols 32767" t))))
3800 (tramp-message vec 5 "Setting shell prompt")
3802 vec (format "PS1=%s" (tramp-shell-quote-argument tramp-end-of-output)) t)
3803 (tramp-send-command vec "PS2=''" t)
3804 (tramp-send-command vec "PS3=''" t)
3805 (tramp-send-command vec "PROMPT_COMMAND=''" t)
3807 ;; Try to set up the coding system correctly.
3808 ;; CCC this can't be the right way to do it. Hm.
3809 (tramp-message vec 5 "Determining coding system")
3810 (tramp-send-command vec "echo foo ; echo bar" t)
3811 (with-current-buffer (process-buffer proc)
3812 (goto-char (point-min))
3813 (if (featurep 'mule)
3814 ;; Use MULE to select the right EOL convention for communicating
3815 ;; with the process.
3816 (let* ((cs (or (tramp-compat-funcall 'process-coding-system proc)
3817 (cons 'undecided 'undecided)))
3818 cs-decode cs-encode)
3819 (when (symbolp cs) (setq cs (cons cs cs)))
3820 (setq cs-decode (car cs))
3821 (setq cs-encode (cdr cs))
3822 (unless cs-decode (setq cs-decode 'undecided))
3823 (unless cs-encode (setq cs-encode 'undecided))
3824 (setq cs-encode (tramp-compat-coding-system-change-eol-conversion
3826 (when (search-forward "\r" nil t)
3827 (setq cs-decode (tramp-compat-coding-system-change-eol-conversion
3829 (tramp-compat-funcall
3830 'set-buffer-process-coding-system cs-decode cs-encode)
3832 vec 5 "Setting coding system to `%s' and `%s'" cs-decode cs-encode))
3833 ;; Look for ^M and do something useful if found.
3834 (when (search-forward "\r" nil t)
3835 ;; We have found a ^M but cannot frob the process coding system
3836 ;; because we're running on a non-MULE Emacs. Let's try
3838 (tramp-send-command vec "stty -onlcr" t))))
3840 (tramp-send-command vec "set +o vi +o emacs" t)
3842 ;; Check whether the output of "uname -sr" has been changed. If
3843 ;; yes, this is a strong indication that we must expire all
3844 ;; connection properties. We start again with
3845 ;; `tramp-maybe-open-connection', it will be caught there.
3846 (tramp-message vec 5 "Checking system information")
3847 (let ((old-uname (tramp-get-connection-property vec "uname" nil))
3849 (tramp-set-connection-property
3851 (tramp-send-command-and-read vec "echo \\\"`uname -sr`\\\""))))
3852 (when (and (stringp old-uname) (not (string-equal old-uname new-uname)))
3856 "Connection reset, because remote host changed from `%s' to `%s'"
3857 old-uname new-uname)
3858 (throw 'uname-changed (tramp-maybe-open-connection vec))))
3860 ;; Check whether the remote host suffers from buggy
3861 ;; `send-process-string'. This is known for FreeBSD (see comment in
3862 ;; `send_process', file process.c). I've tested sending 624 bytes
3863 ;; successfully, sending 625 bytes failed. Emacs makes a hack when
3864 ;; this host type is detected locally. It cannot handle remote
3866 (with-tramp-connection-property proc "chunksize"
3868 ((and (integerp tramp-chunksize) (> tramp-chunksize 0))
3872 vec 5 "Checking remote host type for `send-process-string' bug")
3874 "^FreeBSD" (tramp-get-connection-property vec "uname" ""))
3877 ;; Set remote PATH variable.
3878 (tramp-set-remote-path vec)
3880 ;; Search for a good shell before searching for a command which
3881 ;; checks if a file exists. This is done because Tramp wants to use
3882 ;; "test foo; echo $?" to check if various conditions hold, and
3883 ;; there are buggy /bin/sh implementations which don't execute the
3884 ;; "echo $?" part if the "test" part has an error. In particular,
3885 ;; the OpenSolaris /bin/sh is a problem. There are also other
3886 ;; problems with /bin/sh of OpenSolaris, like redirection of stderr
3887 ;; in function declarations, or changing HISTFILE in place.
3888 ;; Therefore, OpenSolaris' /bin/sh is replaced by bash, when
3890 (tramp-find-shell vec)
3892 ;; Disable unexpected output.
3893 (tramp-send-command vec "mesg n; biff n" t)
3895 ;; IRIX64 bash expands "!" even when in single quotes. This
3896 ;; destroys our shell functions, we must disable it. See
3897 ;; <http://stackoverflow.com/questions/3291692/irix-bash-shell-expands-expression-in-single-quotes-yet-shouldnt>.
3898 (when (string-match "^IRIX64" (tramp-get-connection-property vec "uname" ""))
3899 (tramp-send-command vec "set +H" t))
3901 ;; On BSD-like systems, ?\t is expanded to spaces. Suppress this.
3902 (when (string-match "BSD\\|Darwin"
3903 (tramp-get-connection-property vec "uname" ""))
3904 (tramp-send-command vec "stty -oxtabs" t))
3906 ;; Set `remote-tty' process property.
3907 (let ((tty (tramp-send-command-and-read vec "echo \\\"`tty`\\\"" 'noerror)))
3908 (unless (zerop (length tty))
3909 (tramp-compat-process-put proc 'remote-tty tty)))
3911 ;; Dump stty settings in the traces.
3912 (when (>= tramp-verbose 9)
3913 (tramp-send-command vec "stty -a" t))
3915 ;; Set the environment.
3916 (tramp-message vec 5 "Setting default environment")
3918 (let ((env (copy-sequence tramp-remote-process-environment))
3921 (setq item (tramp-compat-split-string (car env) "="))
3922 (setcdr item (mapconcat 'identity (cdr item) "="))
3923 (if (and (stringp (cdr item)) (not (string-equal (cdr item) "")))
3925 vec (format "%s=%s; export %s" (car item) (cdr item) (car item)) t)
3926 (push (car item) unset))
3927 (setq env (cdr env)))
3930 vec (format "unset %s" (mapconcat 'identity unset " ")) t))))
3932 ;; CCC: We should either implement a Perl version of base64 encoding
3933 ;; and decoding. Then we just use that in the last item. The other
3934 ;; alternative is to use the Perl version of UU encoding. But then
3935 ;; we need a Lisp version of uuencode.
3937 ;; Old text from documentation of tramp-methods:
3938 ;; Using a uuencode/uudecode inline method is discouraged, please use one
3939 ;; of the base64 methods instead since base64 encoding is much more
3940 ;; reliable and the commands are more standardized between the different
3941 ;; Unix versions. But if you can't use base64 for some reason, please
3942 ;; note that the default uudecode command does not work well for some
3943 ;; Unices, in particular AIX and Irix. For AIX, you might want to use
3944 ;; the following command for uudecode:
3946 ;; sed '/^begin/d;/^[` ]$/d;/^end/d' | iconv -f uucode -t ISO8859-1
3948 ;; For Irix, no solution is known yet.
3950 (autoload 'uudecode-decode-region "uudecode")
3952 (defconst tramp-local-coding-commands
3953 '((b64 base64-encode-region base64-decode-region)
3954 (uu tramp-uuencode-region uudecode-decode-region)
3956 "perl -e 'binmode STDIN; binmode STDOUT; print pack(q{u*}, join q{}, <>)'"
3957 "perl -e 'binmode STDIN; binmode STDOUT; print unpack(q{u*}, join q{}, <>)'"))
3958 "List of local coding commands for inline transfer.
3959 Each item is a list that looks like this:
3961 \(FORMAT ENCODING DECODING\)
3963 FORMAT is symbol describing the encoding/decoding format. It can be
3964 `b64' for base64 encoding, `uu' for uu encoding, or `pack' for simple packing.
3966 ENCODING and DECODING can be strings, giving commands, or symbols,
3967 giving functions. If they are strings, then they can contain
3968 the \"%s\" format specifier. If that specifier is present, the input
3969 filename will be put into the command line at that spot. If the
3970 specifier is not present, the input should be read from standard
3973 If they are functions, they will be called with two arguments, start
3974 and end of region, and are expected to replace the region contents
3975 with the encoded or decoded results, respectively.")
3977 (defconst tramp-remote-coding-commands
3978 '((b64 "base64" "base64 -d -i")
3979 ;; "-i" is more robust with older base64 from GNU coreutils.
3980 ;; However, I don't know whether all base64 versions do supports
3982 (b64 "base64" "base64 -d")
3983 (b64 "mimencode -b" "mimencode -u -b")
3984 (b64 "mmencode -b" "mmencode -u -b")
3985 (b64 "recode data..base64" "recode base64..data")
3986 (b64 tramp-perl-encode-with-module tramp-perl-decode-with-module)
3987 (b64 tramp-perl-encode tramp-perl-decode)
3988 (uu "uuencode xxx" "uudecode -o /dev/stdout" "test -c /dev/stdout")
3989 (uu "uuencode xxx" "uudecode -o -")
3990 (uu "uuencode xxx" "uudecode -p")
3991 (uu "uuencode xxx" tramp-uudecode)
3993 "perl -e 'binmode STDIN; binmode STDOUT; print pack(q{u*}, join q{}, <>)'"
3994 "perl -e 'binmode STDIN; binmode STDOUT; print unpack(q{u*}, join q{}, <>)'"))
3995 "List of remote coding commands for inline transfer.
3996 Each item is a list that looks like this:
3998 \(FORMAT ENCODING DECODING [TEST]\)
4000 FORMAT is symbol describing the encoding/decoding format. It can be
4001 `b64' for base64 encoding, `uu' for uu encoding, or `pack' for simple packing.
4003 ENCODING and DECODING can be strings, giving commands, or symbols,
4004 giving variables. If they are strings, then they can contain
4005 the \"%s\" format specifier. If that specifier is present, the input
4006 filename will be put into the command line at that spot. If the
4007 specifier is not present, the input should be read from standard
4010 If they are variables, this variable is a string containing a Perl
4011 implementation for this functionality. This Perl program will be transferred
4012 to the remote host, and it is available as shell function with the same name.
4014 The optional TEST command can be used for further tests, whether
4015 ENCODING and DECODING are applicable.")
4017 (defun tramp-find-inline-encoding (vec)
4018 "Find an inline transfer encoding that works.
4019 Goes through the list `tramp-local-coding-commands' and
4020 `tramp-remote-coding-commands'."
4022 (let ((local-commands tramp-local-coding-commands)
4024 (p (tramp-get-connection-process vec))
4025 loc-enc loc-dec rem-enc rem-dec rem-test litem ritem found)
4026 (while (and local-commands (not found))
4027 (setq litem (pop local-commands))
4028 (catch 'wont-work-local
4029 (let ((format (nth 0 litem))
4030 (remote-commands tramp-remote-coding-commands))
4031 (setq loc-enc (nth 1 litem))
4032 (setq loc-dec (nth 2 litem))
4033 ;; If the local encoder or decoder is a string, the
4034 ;; corresponding command has to work locally.
4035 (if (not (stringp loc-enc))
4037 vec 5 "Checking local encoding function `%s'" loc-enc)
4039 vec 5 "Checking local encoding command `%s' for sanity" loc-enc)
4040 (unless (zerop (tramp-call-local-coding-command
4042 (throw 'wont-work-local nil)))
4043 (if (not (stringp loc-dec))
4045 vec 5 "Checking local decoding function `%s'" loc-dec)
4047 vec 5 "Checking local decoding command `%s' for sanity" loc-dec)
4048 (unless (zerop (tramp-call-local-coding-command
4050 (throw 'wont-work-local nil)))
4051 ;; Search for remote coding commands with the same format
4052 (while (and remote-commands (not found))
4053 (setq ritem (pop remote-commands))
4054 (catch 'wont-work-remote
4055 (when (equal format (nth 0 ritem))
4056 (setq rem-enc (nth 1 ritem))
4057 (setq rem-dec (nth 2 ritem))
4058 (setq rem-test (nth 3 ritem))
4059 ;; Check the remote test command if exists.
4060 (when (stringp rem-test)
4062 vec 5 "Checking remote test command `%s'" rem-test)
4063 (unless (tramp-send-command-and-check vec rem-test t)
4064 (throw 'wont-work-remote nil)))
4065 ;; Check if remote encoding and decoding commands can be
4066 ;; called remotely with null input and output. This makes
4067 ;; sure there are no syntax errors and the command is really
4068 ;; found. Note that we do not redirect stdout to /dev/null,
4069 ;; for two reasons: when checking the decoding command, we
4070 ;; actually check the output it gives. And also, when
4071 ;; redirecting "mimencode" output to /dev/null, then as root
4072 ;; it might change the permissions of /dev/null!
4073 (when (not (stringp rem-enc))
4074 (let ((name (symbol-name rem-enc)))
4075 (while (string-match (regexp-quote "-") name)
4076 (setq name (replace-match "_" nil t name)))
4077 (tramp-maybe-send-script vec (symbol-value rem-enc) name)
4078 (setq rem-enc name)))
4081 "Checking remote encoding command `%s' for sanity" rem-enc)
4082 (unless (tramp-send-command-and-check
4083 vec (format "%s </dev/null" rem-enc) t)
4084 (throw 'wont-work-remote nil))
4086 (when (not (stringp rem-dec))
4087 (let ((name (symbol-name rem-dec)))
4088 (while (string-match (regexp-quote "-") name)
4089 (setq name (replace-match "_" nil t name)))
4090 (tramp-maybe-send-script vec (symbol-value rem-dec) name)
4091 (setq rem-dec name)))
4094 "Checking remote decoding command `%s' for sanity" rem-dec)
4095 (unless (tramp-send-command-and-check
4097 (format "echo %s | %s | %s" magic rem-enc rem-dec)
4099 (throw 'wont-work-remote nil))
4101 (with-current-buffer (tramp-get-buffer vec)
4102 (goto-char (point-min))
4103 (unless (looking-at (regexp-quote magic))
4104 (throw 'wont-work-remote nil)))
4106 ;; `rem-enc' and `rem-dec' could be a string meanwhile.
4107 (setq rem-enc (nth 1 ritem))
4108 (setq rem-dec (nth 2 ritem))
4109 (setq found t)))))))
4111 ;; Did we find something?
4114 vec 'file-error "Couldn't find an inline transfer encoding"))
4116 ;; Set connection properties. Since the commands are risky (due
4117 ;; to output direction), we cache them in the process cache.
4118 (tramp-message vec 5 "Using local encoding `%s'" loc-enc)
4119 (tramp-set-connection-property p "local-encoding" loc-enc)
4120 (tramp-message vec 5 "Using local decoding `%s'" loc-dec)
4121 (tramp-set-connection-property p "local-decoding" loc-dec)
4122 (tramp-message vec 5 "Using remote encoding `%s'" rem-enc)
4123 (tramp-set-connection-property p "remote-encoding" rem-enc)
4124 (tramp-message vec 5 "Using remote decoding `%s'" rem-dec)
4125 (tramp-set-connection-property p "remote-decoding" rem-dec))))
4127 (defun tramp-call-local-coding-command (cmd input output)
4128 "Call the local encoding or decoding command.
4129 If CMD contains \"%s\", provide input file INPUT there in command.
4130 Otherwise, INPUT is passed via standard input.
4131 INPUT can also be nil which means `/dev/null'.
4132 OUTPUT can be a string (which specifies a filename), or t (which
4133 means standard output and thus the current buffer), or nil (which
4135 (tramp-compat-call-process
4136 tramp-encoding-shell
4137 (when (and input (not (string-match "%s" cmd))) input)
4138 (if (eq output t) t nil)
4140 tramp-encoding-command-switch
4142 (if (string-match "%s" cmd) (format cmd input) cmd)
4143 (if (stringp output) (concat "> " output) ""))))
4145 (defconst tramp-inline-compress-commands
4146 '(("gzip" "gzip -d")
4147 ("bzip2" "bzip2 -d")
4149 ("compress" "compress -d"))
4150 "List of compress and decompress commands for inline transfer.
4151 Each item is a list that looks like this:
4153 \(COMPRESS DECOMPRESS\)
4155 COMPRESS or DECOMPRESS are strings with the respective commands.")
4157 (defun tramp-find-inline-compress (vec)
4158 "Find an inline transfer compress command that works.
4159 Goes through the list `tramp-inline-compress-commands'."
4161 (let ((commands tramp-inline-compress-commands)
4163 (p (tramp-get-connection-process vec))
4164 item compress decompress found)
4165 (while (and commands (not found))
4167 (setq item (pop commands)
4168 compress (nth 0 item)
4169 decompress (nth 1 item))
4172 "Checking local compress command `%s', `%s' for sanity"
4173 compress decompress)
4176 (tramp-call-local-coding-command
4178 ;; Windows shells need the program file name after
4179 ;; the pipe symbol be quoted if they use forward
4180 ;; slashes as directory separators.
4181 (if (memq system-type '(windows-nt))
4182 "echo %s | \"%s\" | \"%s\""
4183 "echo %s | %s | %s")
4184 magic compress decompress) nil nil))
4188 "Checking remote compress command `%s', `%s' for sanity"
4189 compress decompress)
4190 (unless (tramp-send-command-and-check
4191 vec (format "echo %s | %s | %s" magic compress decompress) t)
4195 ;; Did we find something?
4198 ;; Set connection properties. Since the commands are
4199 ;; risky (due to output direction), we cache them in the
4202 vec 5 "Using inline transfer compress command `%s'" compress)
4203 (tramp-set-connection-property p "inline-compress" compress)
4205 vec 5 "Using inline transfer decompress command `%s'" decompress)
4206 (tramp-set-connection-property p "inline-decompress" decompress))
4208 (tramp-set-connection-property p "inline-compress" nil)
4209 (tramp-set-connection-property p "inline-decompress" nil)
4211 vec 2 "Couldn't find an inline transfer compress command")))))
4213 (defvar tramp-gw-tunnel-method)
4214 (defvar tramp-gw-socks-method)
4216 (defun tramp-compute-multi-hops (vec)
4217 "Expands VEC according to `tramp-default-proxies-alist'.
4218 Gateway hops are already opened."
4219 (let ((target-alist `(,vec))
4220 (hops (or (tramp-file-name-hop vec) ""))
4224 ;; Ad-hoc proxy definitions.
4225 (dolist (proxy (reverse (split-string hops tramp-postfix-hop-regexp 'omit)))
4226 (let ((user (tramp-file-name-user item))
4227 (host (tramp-file-name-host item))
4229 tramp-prefix-format proxy tramp-postfix-host-format)))
4231 vec 5 "Add proxy (\"%s\" \"%s\" \"%s\")"
4232 (and (stringp host) (regexp-quote host))
4233 (and (stringp user) (regexp-quote user))
4237 'tramp-default-proxies-alist
4238 (list (and (stringp host) (regexp-quote host))
4239 (and (stringp user) (regexp-quote user))
4241 (setq item (tramp-dissect-file-name proxy))))
4242 ;; Save the new value.
4243 (when (and hops tramp-save-ad-hoc-proxies)
4244 (customize-save-variable
4245 'tramp-default-proxies-alist tramp-default-proxies-alist))
4247 ;; Look for proxy hosts to be passed.
4248 (setq choices tramp-default-proxies-alist)
4250 (setq item (pop choices)
4251 proxy (eval (nth 2 item)))
4254 (string-match (or (eval (nth 0 item)) "")
4255 (or (tramp-file-name-host (car target-alist)) ""))
4257 (string-match (or (eval (nth 1 item)) "")
4258 (or (tramp-file-name-user (car target-alist)) "")))
4260 ;; No more hops needed.
4262 ;; Replace placeholders.
4267 ?u (or (tramp-file-name-user (car target-alist)) "")
4268 ?h (or (tramp-file-name-host (car target-alist)) ""))))
4269 (with-parsed-tramp-file-name proxy l
4271 (add-to-list 'target-alist l)
4272 ;; Start next search.
4273 (setq choices tramp-default-proxies-alist)))))
4276 (when (and (boundp 'tramp-gw-tunnel-method) (boundp 'tramp-gw-socks-method)
4279 "^\\(%s\\|%s\\)$" tramp-gw-tunnel-method tramp-gw-socks-method)
4280 (tramp-file-name-method (car target-alist))))
4281 (let ((gw (pop target-alist))
4282 (hop (pop target-alist)))
4283 ;; Is the method prepared for gateways?
4284 (unless (tramp-file-name-port hop)
4287 "Connection `%s' is not supported for gateway access." hop))
4288 ;; Open the gateway connection.
4292 (tramp-file-name-method hop) (tramp-file-name-user hop)
4293 (tramp-compat-funcall 'tramp-gw-open-connection vec gw hop) nil nil))
4294 ;; For the password prompt, we need the correct values.
4295 ;; Therefore, we must remember the gateway vector. But we
4296 ;; cannot do it as connection property, because it shouldn't
4297 ;; be persistent. And we have no started process yet either.
4298 (tramp-set-file-property (car target-alist) "" "gateway" hop)))
4300 ;; Foreign and out-of-band methods are not supported for multi-hops.
4301 (when (cdr target-alist)
4302 (setq choices target-alist)
4304 (setq item (pop choices))
4308 (tramp-get-method-parameter
4309 (tramp-file-name-method item) 'tramp-login-program))
4310 (tramp-get-method-parameter
4311 (tramp-file-name-method item) 'tramp-copy-program))
4314 "Method `%s' is not supported for multi-hops."
4315 (tramp-file-name-method item)))))
4317 ;; In case the host name is not used for the remote shell
4318 ;; command, the user could be misguided by applying a random
4320 (let* ((v (car target-alist))
4321 (method (tramp-file-name-method v))
4322 (host (tramp-file-name-host v)))
4325 ;; There are multi-hops.
4327 ;; The host name is used for the remote shell command.
4329 '("%h") (tramp-get-method-parameter method 'tramp-login-args))
4330 ;; The host is local. We cannot use `tramp-local-host-p'
4331 ;; here, because it opens a connection as well.
4332 (string-match tramp-local-host-regexp host))
4335 "Host `%s' looks like a remote host, `%s' can only use the local host"
4341 (defvar tramp-current-connection nil
4342 "Last connection timestamp.")
4344 (defun tramp-maybe-open-connection (vec)
4345 "Maybe open a connection VEC.
4346 Does not do anything if a connection is already open, but re-opens the
4347 connection if a previous connection has died for some reason."
4348 (catch 'uname-changed
4349 (let ((p (tramp-get-connection-process vec))
4350 (process-name (tramp-get-connection-property vec "process-name" nil))
4351 (process-environment (copy-sequence process-environment))
4352 (pos (with-current-buffer (tramp-get-connection-buffer vec) (point))))
4354 ;; If Tramp opens the same connection within a short time frame,
4355 ;; there is a problem. We shall signal this.
4356 (unless (or (and p (processp p) (memq (process-status p) '(run open)))
4357 (not (equal (butlast (append vec nil))
4358 (car tramp-current-connection)))
4360 (current-time) (cdr tramp-current-connection))
4361 (or tramp-connection-min-time-diff 0)))
4362 (throw 'suppress 'suppress))
4364 ;; If too much time has passed since last command was sent, look
4365 ;; whether process is still alive. If it isn't, kill it. When
4366 ;; using ssh, it can sometimes happen that the remote end has
4367 ;; hung up but the local ssh client doesn't recognize this until
4368 ;; it tries to send some data to the remote end. So that's why
4369 ;; we try to send a command from time to time, then look again
4370 ;; whether the process is really alive.
4372 (when (and (> (tramp-time-diff
4374 (tramp-get-connection-property
4375 p "last-cmd-time" '(0 0 0)))
4377 p (processp p) (memq (process-status p) '(run open)))
4378 (tramp-send-command vec "echo are you awake" t t)
4379 (unless (and (memq (process-status p) '(run open))
4380 (tramp-wait-for-output p 10))
4381 ;; The error will be caught locally.
4382 (tramp-error vec 'file-error "Awake did fail")))
4387 ;; New connection must be opened.
4389 (unless (and p (processp p) (memq (process-status p) '(run open)))
4391 ;; We call `tramp-get-buffer' in order to get a debug
4392 ;; buffer for messages from the beginning.
4393 (tramp-get-buffer vec)
4395 ;; If `non-essential' is non-nil, don't reopen a new connection.
4396 (when (and (boundp 'non-essential) (symbol-value 'non-essential))
4397 (throw 'non-essential 'non-essential))
4399 (with-tramp-progress-reporter
4401 (if (zerop (length (tramp-file-name-user vec)))
4402 (format "Opening connection for %s using %s"
4403 (tramp-file-name-host vec)
4404 (tramp-file-name-method vec))
4405 (format "Opening connection for %s@%s using %s"
4406 (tramp-file-name-user vec)
4407 (tramp-file-name-host vec)
4408 (tramp-file-name-method vec)))
4410 ;; Start new process.
4411 (when (and p (processp p))
4413 (setenv "TERM" tramp-terminal-type)
4414 (setenv "LC_ALL" "C")
4415 (setenv "PROMPT_COMMAND")
4416 (setenv "PS1" tramp-initial-end-of-output)
4417 (let* ((target-alist (tramp-compute-multi-hops vec))
4418 (process-connection-type tramp-process-connection-type)
4419 (process-adaptive-read-buffering nil)
4420 (coding-system-for-read nil)
4421 ;; This must be done in order to avoid our file
4423 (p (let ((default-directory
4424 (tramp-compat-temporary-file-directory)))
4427 (tramp-get-connection-name vec)
4428 (tramp-get-connection-buffer vec)
4429 (if tramp-encoding-command-interactive
4430 (list tramp-encoding-shell
4431 tramp-encoding-command-interactive)
4432 (list tramp-encoding-shell))))))
4434 ;; Set sentinel and query flag.
4435 (tramp-set-connection-property p "vector" vec)
4436 (set-process-sentinel p 'tramp-process-sentinel)
4437 (tramp-compat-set-process-query-on-exit-flag p nil)
4438 (setq tramp-current-connection
4439 (cons (butlast (append vec nil)) (current-time))
4440 tramp-current-host (system-name))
4443 vec 6 "%s" (mapconcat 'identity (process-command p) " "))
4445 ;; Check whether process is alive.
4446 (tramp-barf-if-no-shell-prompt
4448 "Couldn't find local shell prompt %s" tramp-encoding-shell)
4450 ;; Now do all the connections as specified.
4452 (let* ((hop (car target-alist))
4453 (l-method (tramp-file-name-method hop))
4454 (l-user (tramp-file-name-user hop))
4455 (l-host (tramp-file-name-host hop))
4458 (tramp-get-method-parameter
4459 l-method 'tramp-login-program))
4461 (tramp-get-method-parameter
4462 l-method 'tramp-login-args))
4464 (tramp-get-method-parameter
4465 l-method 'tramp-async-args))
4467 (tramp-get-method-parameter l-method 'tramp-gw-args))
4468 (gw (tramp-get-file-property hop "" "gateway" nil))
4469 (g-method (and gw (tramp-file-name-method gw)))
4470 (g-user (and gw (tramp-file-name-user gw)))
4471 (g-host (and gw (tramp-file-name-real-host gw)))
4472 (command login-program)
4473 ;; We don't create the temporary file. In
4474 ;; fact, it is just a prefix for the
4475 ;; ControlPath option of ssh; the real
4476 ;; temporary file has another name, and it is
4477 ;; created and protected by ssh. It is also
4478 ;; removed by ssh when the connection is
4481 (tramp-set-connection-property
4485 tramp-temp-name-prefix
4486 (tramp-compat-temporary-file-directory)))))
4489 ;; Add arguments for asynchronous processes.
4490 (when (and process-name async-args)
4491 (setq login-args (append async-args login-args)))
4493 ;; Add gateway arguments if necessary.
4494 (when (and gw gw-args)
4495 (setq login-args (append gw-args login-args)))
4497 ;; Check for port number. Until now, there's no
4498 ;; need for handling like method, user, host.
4499 (when (string-match tramp-host-with-port-regexp l-host)
4500 (setq l-port (match-string 2 l-host)
4501 l-host (match-string 1 l-host)))
4503 ;; Check, whether there is a restricted shell.
4504 (dolist (elt tramp-restricted-shell-hosts-alist)
4505 (when (string-match elt tramp-current-host)
4508 ;; Set variables for computing the prompt for
4509 ;; reading password. They can also be derived
4511 (setq tramp-current-method (or g-method l-method)
4512 tramp-current-user (or g-user l-user)
4513 tramp-current-host (or g-host l-host))
4515 ;; Replace login-args place holders.
4517 l-host (or l-host "")
4518 l-user (or l-user "")
4519 l-port (or l-port "")
4520 spec (format-spec-make
4521 ?h l-host ?u l-user ?p l-port ?t tmpfile)
4524 ;; We do not want to see the trailing local
4525 ;; prompt in `start-file-process'.
4526 (unless r-shell "exec ")
4530 (setq x (mapcar (lambda (y) (format-spec y spec)) x))
4531 (unless (member "" x) (mapconcat 'identity x " ")))
4533 ;; Local shell could be a Windows COMSPEC. It
4534 ;; doesn't know the ";" syntax, but we must exit
4535 ;; always for `start-file-process'. It could
4536 ;; also be a restricted shell, which does not
4538 (when r-shell " && exit || exit")))
4540 ;; Send the command.
4541 (tramp-message vec 3 "Sending command `%s'" command)
4542 (tramp-send-command vec command t t)
4543 (tramp-process-actions
4544 p vec pos tramp-actions-before-shell 60)
4546 vec 3 "Found remote shell prompt on `%s'" l-host))
4548 (setq target-alist (cdr target-alist)))
4550 ;; Make initial shell settings.
4551 (tramp-open-connection-setup-interactive-shell p vec))))
4553 ;; When the user did interrupt, we must cleanup.
4556 ;; Propagate the quit signal.
4557 (signal (car err) (cdr err)))))))
4559 (defun tramp-send-command (vec command &optional neveropen nooutput)
4560 "Send the COMMAND to connection VEC.
4561 Erases temporary buffer before sending the command. If optional
4562 arg NEVEROPEN is non-nil, never try to open the connection. This
4563 is meant to be used from `tramp-maybe-open-connection' only. The
4564 function waits for output unless NOOUTPUT is set."
4565 (unless neveropen (tramp-maybe-open-connection vec))
4566 (let ((p (tramp-get-connection-process vec)))
4567 (when (tramp-get-connection-property p "remote-echo" nil)
4568 ;; We mark the command string that it can be erased in the output buffer.
4569 (tramp-set-connection-property p "check-remote-echo" t)
4570 (setq command (format "%s%s%s" tramp-echo-mark command tramp-echo-mark)))
4571 (when (and (string-match "<<'EOF'" command)
4572 (not (tramp-get-connection-property vec "busybox" nil)))
4573 ;; Unset $PS1 when using here documents, in order to avoid
4574 ;; multiple prompts.
4575 (setq command (concat "(PS1= ; " command "\n)")))
4576 ;; Send the command.
4577 (tramp-message vec 6 "%s" command)
4578 (tramp-send-string vec command)
4579 (unless nooutput (tramp-wait-for-output p))))
4581 (defun tramp-wait-for-output (proc &optional timeout)
4582 "Wait for output from remote command."
4583 (unless (buffer-live-p (process-buffer proc))
4584 (delete-process proc)
4585 (tramp-error proc 'file-error "Process `%s' not available, try again" proc))
4586 (with-current-buffer (process-buffer proc)
4587 (let* (;; Initially, `tramp-end-of-output' is "#$ ". There might
4588 ;; be leading escape sequences, which must be ignored.
4589 (regexp (format "[^#$\n]*%s\r?$" (regexp-quote tramp-end-of-output)))
4590 ;; Sometimes, the commands do not return a newline but a
4591 ;; null byte before the shell prompt, for example "git
4592 ;; ls-files -c -z ...".
4593 (regexp1 (format "\\(^\\|\000\\)%s" regexp))
4594 (found (tramp-wait-for-regexp proc timeout regexp1)))
4596 (let (buffer-read-only)
4597 ;; A simple-minded busybox has sent " ^H" sequences.
4599 (goto-char (point-min))
4600 (when (re-search-forward "^\\(.\b\\)+$" (point-at-eol) t)
4602 (delete-region (point-min) (point)))
4603 ;; Delete the prompt.
4604 (goto-char (point-max))
4605 (re-search-backward regexp nil t)
4606 (delete-region (point) (point-max)))
4610 "[[Remote prompt `%s' not found in %d secs]]"
4611 tramp-end-of-output timeout)
4614 "[[Remote prompt `%s' not found]]" tramp-end-of-output)))
4615 ;; Return value is whether end-of-output sentinel was found.
4618 (defun tramp-send-command-and-check
4619 (vec command &optional subshell dont-suppress-err)
4620 "Run COMMAND and check its exit status.
4621 Sends `echo $?' along with the COMMAND for checking the exit status. If
4622 COMMAND is nil, just sends `echo $?'. Returns the exit status found.
4624 If the optional argument SUBSHELL is non-nil, the command is
4625 executed in a subshell, ie surrounded by parentheses. If
4626 DONT-SUPPRESS-ERR is non-nil, stderr won't be sent to /dev/null."
4629 (concat (if subshell "( " "")
4631 (if command (if dont-suppress-err "; " " 2>/dev/null; ") "")
4632 "echo tramp_exit_status $?"
4633 (if subshell " )" "")))
4634 (with-current-buffer (tramp-get-connection-buffer vec)
4635 (goto-char (point-max))
4636 (unless (re-search-backward "tramp_exit_status [0-9]+" nil t)
4638 vec 'file-error "Couldn't find exit status of `%s'" command))
4639 (skip-chars-forward "^ ")
4641 (zerop (read (current-buffer)))
4642 (let (buffer-read-only)
4643 (delete-region (match-beginning 0) (point-max))))))
4645 (defun tramp-barf-unless-okay (vec command fmt &rest args)
4646 "Run COMMAND, check exit status, throw error if exit status not okay.
4647 Similar to `tramp-send-command-and-check' but accepts two more arguments
4648 FMT and ARGS which are passed to `error'."
4649 (or (tramp-send-command-and-check vec command)
4650 (apply 'tramp-error vec 'file-error fmt args)))
4652 (defun tramp-send-command-and-read (vec command &optional noerror)
4653 "Run COMMAND and return the output, which must be a Lisp expression.
4654 In case there is no valid Lisp expression and NOERROR is nil, it
4657 (tramp-send-command-and-check vec command)
4658 (tramp-barf-unless-okay
4659 vec command "`%s' returns with error" command))
4660 (with-current-buffer (tramp-get-connection-buffer vec)
4661 ;; Read the expression.
4662 (goto-char (point-min))
4664 (prog1 (read (current-buffer))
4666 (when (re-search-forward "\\S-" (point-at-eol) t)
4668 (error (unless noerror
4671 "`%s' does not return a valid Lisp expression: `%s'"
4672 command (buffer-string))))))))
4674 (defun tramp-convert-file-attributes (vec attr)
4675 "Convert `file-attributes' ATTR generated by perl script, stat or ls.
4676 Convert file mode bits to string and set virtual device number.
4679 ;; Remove color escape sequences from symlink.
4680 (when (stringp (car attr))
4681 (while (string-match tramp-color-escape-sequence-regexp (car attr))
4682 (setcar attr (replace-match "" nil nil (car attr)))))
4683 ;; Convert uid and gid. Use -1 as indication of unusable value.
4684 (when (and (numberp (nth 2 attr)) (< (nth 2 attr) 0))
4685 (setcar (nthcdr 2 attr) -1))
4686 (when (and (floatp (nth 2 attr))
4687 (<= (nth 2 attr) (tramp-compat-most-positive-fixnum)))
4688 (setcar (nthcdr 2 attr) (round (nth 2 attr))))
4689 (when (and (numberp (nth 3 attr)) (< (nth 3 attr) 0))
4690 (setcar (nthcdr 3 attr) -1))
4691 (when (and (floatp (nth 3 attr))
4692 (<= (nth 3 attr) (tramp-compat-most-positive-fixnum)))
4693 (setcar (nthcdr 3 attr) (round (nth 3 attr))))
4694 ;; Convert last access time.
4695 (unless (listp (nth 4 attr))
4696 (setcar (nthcdr 4 attr)
4697 (list (floor (nth 4 attr) 65536)
4698 (floor (mod (nth 4 attr) 65536)))))
4699 ;; Convert last modification time.
4700 (unless (listp (nth 5 attr))
4701 (setcar (nthcdr 5 attr)
4702 (list (floor (nth 5 attr) 65536)
4703 (floor (mod (nth 5 attr) 65536)))))
4704 ;; Convert last status change time.
4705 (unless (listp (nth 6 attr))
4706 (setcar (nthcdr 6 attr)
4707 (list (floor (nth 6 attr) 65536)
4708 (floor (mod (nth 6 attr) 65536)))))
4709 ;; Convert file size.
4710 (when (< (nth 7 attr) 0)
4711 (setcar (nthcdr 7 attr) -1))
4712 (when (and (floatp (nth 7 attr))
4713 (<= (nth 7 attr) (tramp-compat-most-positive-fixnum)))
4714 (setcar (nthcdr 7 attr) (round (nth 7 attr))))
4715 ;; Convert file mode bits to string.
4716 (unless (stringp (nth 8 attr))
4717 (setcar (nthcdr 8 attr) (tramp-file-mode-from-int (nth 8 attr)))
4718 (when (stringp (car attr))
4719 (aset (nth 8 attr) 0 ?l)))
4720 ;; Convert directory indication bit.
4721 (when (string-match "^d" (nth 8 attr))
4723 ;; Convert symlink from `tramp-do-file-attributes-with-stat'.
4724 (when (consp (car attr))
4725 (if (and (stringp (caar attr))
4726 (string-match ".+ -> .\\(.+\\)." (caar attr)))
4727 (setcar attr (match-string 1 (caar attr)))
4729 ;; Set file's gid change bit.
4730 (setcar (nthcdr 9 attr)
4731 (if (numberp (nth 3 attr))
4732 (not (= (nth 3 attr)
4733 (tramp-get-remote-gid vec 'integer)))
4736 (tramp-get-remote-gid vec 'string)))))
4738 (unless (listp (nth 10 attr))
4739 (setcar (nthcdr 10 attr)
4741 (cons (floor (nth 10 attr) 65536)
4742 (floor (mod (nth 10 attr) 65536)))
4743 ;; Inodes can be incredible huge. We must hide this.
4744 (error (tramp-get-inode vec)))))
4745 ;; Set virtual device number.
4746 (setcar (nthcdr 11 attr)
4747 (tramp-get-device vec))
4750 (defun tramp-check-cached-permissions (vec access)
4751 "Check `file-attributes' caches for VEC.
4752 Return t if according to the cache access type ACCESS is known to
4758 ((eq ?x access) 3))))
4759 (dolist (suffix '("string" "integer") result)
4765 (tramp-get-file-property
4766 vec (tramp-file-name-localname vec)
4767 (concat "file-attributes-" suffix) nil))
4769 (tramp-get-connection-property
4770 vec (concat "uid-" suffix) nil))
4772 (tramp-get-connection-property
4773 vec (concat "gid-" suffix) nil)))
4778 (eq t (car file-attr))
4779 (null (car file-attr)))
4781 ;; World accessible.
4782 (eq access (aref (nth 8 file-attr) (+ offset 6)))
4783 ;; User accessible and owned by user.
4785 (eq access (aref (nth 8 file-attr) offset))
4786 (equal remote-uid (nth 2 file-attr)))
4787 ;; Group accessible and owned by user's
4790 (eq access (aref (nth 8 file-attr) (+ offset 3)))
4791 (equal remote-gid (nth 3 file-attr)))))))))))
4793 (defun tramp-file-mode-from-int (mode)
4794 "Turn an integer representing a file mode into an ls(1)-like string."
4796 (assoc (logand (lsh mode -12) 15) tramp-file-mode-type-map)))
4797 (user (logand (lsh mode -6) 7))
4798 (group (logand (lsh mode -3) 7))
4799 (other (logand (lsh mode -0) 7))
4800 (suid (> (logand (lsh mode -9) 4) 0))
4801 (sgid (> (logand (lsh mode -9) 2) 0))
4802 (sticky (> (logand (lsh mode -9) 1) 0)))
4803 (setq user (tramp-file-mode-permissions user suid "s"))
4804 (setq group (tramp-file-mode-permissions group sgid "s"))
4805 (setq other (tramp-file-mode-permissions other sticky "t"))
4806 (concat type user group other)))
4808 (defun tramp-file-mode-permissions (perm suid suid-text)
4809 "Convert a permission bitset into a string.
4810 This is used internally by `tramp-file-mode-from-int'."
4811 (let ((r (> (logand perm 4) 0))
4812 (w (> (logand perm 2) 0))
4813 (x (> (logand perm 1) 0)))
4814 (concat (or (and r "r") "-")
4815 (or (and w "w") "-")
4816 (or (and suid x suid-text) ; suid, execute
4817 (and suid (upcase suid-text)) ; suid, !execute
4818 (and x "x") "-")))) ; !suid
4820 (defun tramp-shell-case-fold (string)
4821 "Converts STRING to shell glob pattern which ignores case."
4824 (if (equal (downcase c) (upcase c))
4826 (format "[%c%c]" (downcase c) (upcase c))))
4830 (defun tramp-make-copy-program-file-name (vec)
4831 "Create a file name suitable to be passed to `rcp' and workalikes."
4832 (let ((user (tramp-file-name-user vec))
4833 (host (tramp-file-name-real-host vec))
4834 (localname (tramp-shell-quote-argument
4835 (tramp-file-name-localname vec))))
4836 (if (not (zerop (length user)))
4837 (format "%s@%s:%s" user host localname)
4838 (format "%s:%s" host localname))))
4840 (defun tramp-method-out-of-band-p (vec size)
4841 "Return t if this is an out-of-band method, nil otherwise."
4843 ;; It shall be an out-of-band method.
4844 (tramp-get-method-parameter (tramp-file-name-method vec) 'tramp-copy-program)
4845 ;; There must be a size, otherwise the file doesn't exist.
4847 ;; Either the file size is large enough, or (in rare cases) there
4848 ;; does not exist a remote encoding.
4849 (or (null tramp-copy-size-limit)
4850 (> size tramp-copy-size-limit)
4851 (null (tramp-get-inline-coding vec "remote-encoding" size)))))
4853 ;; Variables local to connection.
4855 (defun tramp-get-remote-path (vec)
4856 (with-tramp-connection-property
4857 ;; When `tramp-own-remote-path' is in `tramp-remote-path', we
4858 ;; cache the result for the session only. Otherwise, the result
4859 ;; is cached persistently.
4860 (if (memq 'tramp-own-remote-path tramp-remote-path)
4861 (tramp-get-connection-process vec)
4864 (let* ((remote-path (copy-tree tramp-remote-path))
4865 (elt1 (memq 'tramp-default-remote-path remote-path))
4866 (elt2 (memq 'tramp-own-remote-path remote-path))
4867 (default-remote-path
4870 (tramp-send-command-and-read
4871 vec "echo \\\"`getconf PATH 2>/dev/null`\\\"" 'noerror)
4872 ;; Default if "getconf" is not available.
4876 "`getconf PATH' not successful, using default value \"%s\"."
4882 (tramp-send-command-and-read vec "echo \\\"$PATH\\\"")
4885 vec 3 "$PATH not set, ignoring `tramp-own-remote-path'.")
4888 ;; Replace place holder `tramp-default-remote-path'.
4892 (tramp-compat-split-string default-remote-path ":")
4894 (setq remote-path (delq 'tramp-default-remote-path remote-path)))
4896 ;; Replace place holder `tramp-own-remote-path'.
4900 (tramp-compat-split-string own-remote-path ":")
4902 (setq remote-path (delq 'tramp-own-remote-path remote-path)))
4904 ;; Remove double entries.
4905 (setq elt1 remote-path)
4907 (while (and (car elt1) (setq elt2 (member (car elt1) (cdr elt1))))
4909 (setq elt1 (cdr elt1)))
4911 ;; Remove non-existing directories.
4919 (tramp-make-tramp-file-name
4920 (tramp-file-name-method vec)
4921 (tramp-file-name-user vec)
4922 (tramp-file-name-host vec)
4927 (defun tramp-get-ls-command (vec)
4928 (with-tramp-connection-property vec "ls"
4929 (tramp-message vec 5 "Finding a suitable `ls' command")
4932 (dolist (cmd '("ls" "gnuls" "gls"))
4933 (let ((dl (tramp-get-remote-path vec))
4935 (while (and dl (setq result (tramp-find-executable vec cmd dl t t)))
4936 ;; Check parameters. On busybox, "ls" output coloring is
4937 ;; enabled by default sometimes. So we try to disable it
4938 ;; when possible. $LS_COLORING is not supported there.
4939 ;; Some "ls" versions are sensible wrt the order of
4940 ;; arguments, they fail when "-al" is after the
4941 ;; "--color=never" argument (for example on FreeBSD).
4942 (when (tramp-send-command-and-check
4943 vec (format "%s -lnd /" result))
4944 (when (tramp-send-command-and-check
4946 "%s --color=never -al /dev/null" result))
4947 (setq result (concat result " --color=never")))
4948 (throw 'ls-found result))
4949 (setq dl (cdr dl))))))
4950 (tramp-error vec 'file-error "Couldn't find a proper `ls' command"))))
4952 (defun tramp-get-ls-command-with-dired (vec)
4954 (with-tramp-connection-property vec "ls-dired"
4955 (tramp-message vec 5 "Checking, whether `ls --dired' works")
4956 ;; Some "ls" versions are sensible wrt the order of arguments,
4957 ;; they fail when "-al" is after the "--dired" argument (for
4958 ;; example on FreeBSD).
4959 (tramp-send-command-and-check
4960 vec (format "%s --dired -al /dev/null" (tramp-get-ls-command vec))))))
4962 (defun tramp-get-test-command (vec)
4963 (with-tramp-connection-property vec "test"
4964 (tramp-message vec 5 "Finding a suitable `test' command")
4965 (if (tramp-send-command-and-check vec "test 0")
4967 (tramp-find-executable vec "test" (tramp-get-remote-path vec)))))
4969 (defun tramp-get-test-nt-command (vec)
4970 ;; Does `test A -nt B' work? Use abominable `find' construct if it
4971 ;; doesn't. BSD/OS 4.0 wants the parentheses around the command,
4972 ;; for otherwise the shell crashes.
4973 (with-tramp-connection-property vec "test-nt"
4977 vec (format "( %s / -nt / )" (tramp-get-test-command vec)))
4978 (with-current-buffer (tramp-get-buffer vec)
4979 (goto-char (point-min))
4980 (when (looking-at (regexp-quote tramp-end-of-output))
4981 (format "%s %%s -nt %%s" (tramp-get-test-command vec)))))
4986 "tramp_test_nt () {\n%s -n \"`find $1 -prune -newer $2 -print`\"\n}"
4987 (tramp-get-test-command vec)))
4988 "tramp_test_nt %s %s"))))
4990 (defun tramp-get-file-exists-command (vec)
4991 (with-tramp-connection-property vec "file-exists"
4992 (tramp-message vec 5 "Finding command to check if file exists")
4993 (tramp-find-file-exists-command vec)))
4995 (defun tramp-get-remote-ln (vec)
4996 (with-tramp-connection-property vec "ln"
4997 (tramp-message vec 5 "Finding a suitable `ln' command")
4998 (tramp-find-executable vec "ln" (tramp-get-remote-path vec))))
5000 (defun tramp-get-remote-perl (vec)
5001 (with-tramp-connection-property vec "perl"
5002 (tramp-message vec 5 "Finding a suitable `perl' command")
5004 (or (tramp-find-executable vec "perl5" (tramp-get-remote-path vec))
5005 (tramp-find-executable
5006 vec "perl" (tramp-get-remote-path vec)))))
5007 ;; We must check also for some Perl modules.
5009 (with-tramp-connection-property vec "perl-file-spec"
5010 (tramp-send-command-and-check
5011 vec (format "%s -e 'use File::Spec;'" result)))
5012 (with-tramp-connection-property vec "perl-cwd-realpath"
5013 (tramp-send-command-and-check
5014 vec (format "%s -e 'use Cwd \"realpath\";'" result))))
5017 (defun tramp-get-remote-stat (vec)
5018 (with-tramp-connection-property vec "stat"
5019 (tramp-message vec 5 "Finding a suitable `stat' command")
5020 (let ((result (tramp-find-executable
5021 vec "stat" (tramp-get-remote-path vec)))
5023 ;; Check whether stat(1) returns usable syntax. "%s" does not
5024 ;; work on older AIX systems.
5027 (tramp-send-command-and-read
5028 vec (format "%s -c '(\"%%N\" %%s)' /" result) 'noerror))
5029 (unless (and (listp tmp) (stringp (car tmp))
5030 (string-match "^./.$" (car tmp))
5031 (integerp (cadr tmp)))
5035 (defun tramp-get-remote-readlink (vec)
5036 (with-tramp-connection-property vec "readlink"
5037 (tramp-message vec 5 "Finding a suitable `readlink' command")
5038 (let ((result (tramp-find-executable
5039 vec "readlink" (tramp-get-remote-path vec))))
5041 (tramp-send-command-and-check
5042 vec (format "%s --canonicalize-missing /" result)))
5045 (defun tramp-get-remote-trash (vec)
5046 (with-tramp-connection-property vec "trash"
5047 (tramp-message vec 5 "Finding a suitable `trash' command")
5048 (tramp-find-executable vec "trash" (tramp-get-remote-path vec))))
5050 (defun tramp-get-remote-id (vec)
5051 (with-tramp-connection-property vec "id"
5052 (tramp-message vec 5 "Finding POSIX `id' command")
5055 (let ((dl (tramp-get-remote-path vec))
5057 (while (and dl (setq result (tramp-find-executable vec "id" dl t t)))
5058 ;; Check POSIX parameter.
5059 (when (tramp-send-command-and-check vec (format "%s -u" result))
5060 (throw 'id-found result))
5061 (setq dl (cdr dl)))))
5062 (tramp-error vec 'file-error "Couldn't find a POSIX `id' command"))))
5064 (defun tramp-get-remote-uid (vec id-format)
5065 (with-tramp-connection-property vec (format "uid-%s" id-format)
5066 (let ((res (tramp-send-command-and-read
5068 (format "%s -u%s %s"
5069 (tramp-get-remote-id vec)
5070 (if (equal id-format 'integer) "" "n")
5071 (if (equal id-format 'integer)
5072 "" "| sed -e s/^/\\\"/ -e s/\$/\\\"/")))))
5073 ;; The command might not always return a number.
5074 (if (and (equal id-format 'integer) (not (integerp res))) -1 res))))
5076 (defun tramp-get-remote-gid (vec id-format)
5077 (with-tramp-connection-property vec (format "gid-%s" id-format)
5078 (let ((res (tramp-send-command-and-read
5080 (format "%s -g%s %s"
5081 (tramp-get-remote-id vec)
5082 (if (equal id-format 'integer) "" "n")
5083 (if (equal id-format 'integer)
5084 "" "| sed -e s/^/\\\"/ -e s/\$/\\\"/")))))
5085 ;; The command might not always return a number.
5086 (if (and (equal id-format 'integer) (not (integerp res))) -1 res))))
5088 (defun tramp-get-local-uid (id-format)
5089 (if (equal id-format 'integer) (user-uid) (user-login-name)))
5091 (defun tramp-get-local-gid (id-format)
5092 (if (and (fboundp 'group-gid) (equal id-format 'integer))
5093 (tramp-compat-funcall 'group-gid)
5094 (nth 3 (tramp-compat-file-attributes "~/" id-format))))
5096 ;; Some predefined connection properties.
5097 (defun tramp-get-inline-compress (vec prop size)
5098 "Return the compress command related to PROP.
5099 PROP is either `inline-compress' or `inline-decompress'. SIZE is
5100 the length of the file to be compressed.
5102 If no corresponding command is found, nil is returned."
5103 (when (and (integerp tramp-inline-compress-start-size)
5104 (> size tramp-inline-compress-start-size))
5105 (with-tramp-connection-property (tramp-get-connection-process vec) prop
5106 (tramp-find-inline-compress vec)
5107 (tramp-get-connection-property
5108 (tramp-get-connection-process vec) prop nil))))
5110 (defun tramp-get-inline-coding (vec prop size)
5111 "Return the coding command related to PROP.
5112 PROP is either `remote-encoding', `remote-decoding',
5113 `local-encoding' or `local-decoding'.
5115 SIZE is the length of the file to be coded. Depending on SIZE,
5116 compression might be applied.
5118 If no corresponding command is found, nil is returned.
5119 Otherwise, either a string is returned which contains a `%s' mark
5120 to be used for the respective input or output file; or a Lisp
5121 function cell is returned to be applied on a buffer."
5122 ;; We must catch the errors, because we want to return `nil', when
5123 ;; no inline coding is found.
5126 (with-tramp-connection-property
5127 (tramp-get-connection-process vec) prop
5128 (tramp-find-inline-encoding vec)
5129 (tramp-get-connection-property
5130 (tramp-get-connection-process vec) prop nil)))
5131 (prop1 (if (string-match "encoding" prop)
5132 "inline-compress" "inline-decompress"))
5134 ;; The connection property might have been cached. So we must
5135 ;; send the script to the remote side - maybe.
5136 (when (and coding (symbolp coding) (string-match "remote" prop))
5137 (let ((name (symbol-name coding)))
5138 (while (string-match (regexp-quote "-") name)
5139 (setq name (replace-match "_" nil t name)))
5140 (tramp-maybe-send-script vec (symbol-value coding) name)
5141 (setq coding name)))
5143 ;; Check for the `compress' command.
5144 (setq compress (tramp-get-inline-compress vec prop1 size))
5145 ;; Return the value.
5147 ((and compress (symbolp coding))
5148 (if (string-match "decompress" prop1)
5151 (let ((coding-system-for-write 'binary)
5152 (coding-system-for-read 'binary))
5154 'call-process-region (point-min) (point-max)
5155 (car (split-string ,compress)) t t nil
5156 (cdr (split-string ,compress)))))
5158 (let ((coding-system-for-write 'binary)
5159 (coding-system-for-read 'binary))
5161 'call-process-region beg end
5162 (car (split-string ,compress)) t t nil
5163 (cdr (split-string ,compress))))
5164 (,coding (point-min) (point-max)))))
5167 ((and compress (string-match "decoding" prop))
5169 ;; Windows shells need the program file name after
5170 ;; the pipe symbol be quoted if they use forward
5171 ;; slashes as directory separators.
5172 (if (and (string-match "local" prop)
5173 (memq system-type '(windows-nt)))
5174 "(%s | \"%s\" >%%s)"
5179 ;; Windows shells need the program file name after
5180 ;; the pipe symbol be quoted if they use forward
5181 ;; slashes as directory separators.
5182 (if (and (string-match "local" prop)
5183 (memq system-type '(windows-nt)))
5184 "(%s <%%s | \"%s\")"
5187 ((string-match "decoding" prop)
5188 (format "%s >%%s" coding))
5190 (format "%s <%%s" coding)))))))
5192 (add-hook 'tramp-unload-hook
5194 (unload-feature 'tramp-sh 'force)))
5200 ;; * Don't use globbing for directories with many files, as this is
5201 ;; likely to produce long command lines, and some shells choke on
5202 ;; long command lines.
5203 ;; * Make it work for different encodings, and for different file name
5204 ;; encodings, too. (Daniel Pittman)
5205 ;; * Don't search for perl5 and perl. Instead, only search for perl and
5206 ;; then look if it's the right version (with `perl -v').
5207 ;; * When editing a remote CVS controlled file as a different user, VC
5208 ;; gets confused about the file locking status. Try to find out why
5209 ;; the workaround doesn't work.
5210 ;; * Allow out-of-band methods as _last_ multi-hop. Open a connection
5211 ;; until the last but one hop via `start-file-process'. Apply it
5212 ;; also for ftp and smb.
5213 ;; * WIBNI if we had a command "trampclient"? If I was editing in
5214 ;; some shell with root privileges, it would be nice if I could
5216 ;; trampclient filename.c
5217 ;; as an editor, and the _current_ shell would connect to an Emacs
5218 ;; server and would be used in an existing non-privileged Emacs
5219 ;; session for doing the editing in question.
5220 ;; That way, I need not tell Emacs my password again and be afraid
5221 ;; that it makes it into core dumps or other ugly stuff (I had Emacs
5222 ;; once display a just typed password in the context of a keyboard
5223 ;; sequence prompt for a question immediately following in a shell
5224 ;; script run within Emacs -- nasty).
5225 ;; And if I have some ssh session running to a different computer,
5226 ;; having the possibility of passing a local file there to a local
5227 ;; Emacs session (in case I can arrange for a connection back) would
5229 ;; Likely the corresponding Tramp server should not allow the
5230 ;; equivalent of the emacsclient -eval option in order to make this
5231 ;; reasonably unproblematic. And maybe trampclient should have some
5232 ;; way of passing credentials, like by using an SSL socket or
5233 ;; something. (David Kastrup)
5234 ;; * Reconnect directly to a compliant shell without first going
5235 ;; through the user's default shell. (Pete Forman)
5236 ;; * How can I interrupt the remote process with a signal
5237 ;; (interrupt-process seems not to work)? (Markus Triska)
5238 ;; * Avoid the local shell entirely for starting remote processes. If
5239 ;; so, I think even a signal, when delivered directly to the local
5240 ;; SSH instance, would correctly be propagated to the remote process
5241 ;; automatically; possibly SSH would have to be started with
5242 ;; "-t". (Markus Triska)
5243 ;; * It makes me wonder if tramp couldn't fall back to ssh when scp
5244 ;; isn't on the remote host. (Mark A. Hershberger)
5245 ;; * Use lsh instead of ssh. (Alfred M. Szmidt)
5246 ;; * Optimize out-of-band copying when both methods are scp-like (not
5248 ;; * Keep a second connection open for out-of-band methods like scp or
5250 ;; * Try telnet+curl as new method. It might be useful for busybox,
5251 ;; without built-in uuencode/uudecode.
5253 ;;; tramp-sh.el ends here