lisp/emacs-lisp/warnings.el: Tiny fixes.
[emacs.git] / lisp / net / tramp-sh.el
blob81e955ebbf876e2a9cef89dc66e91e407e141f3c
1 ;;; tramp-sh.el --- Tramp access functions for (s)sh-like connections
3 ;; Copyright (C) 1998-2011 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
10 ;; Package: tramp
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/>.
27 ;;; Code:
29 (eval-when-compile (require 'cl)) ; ignore-errors
30 (require 'tramp)
31 (require 'shell)
33 ;; Pacify byte-compiler. The function is needed on XEmacs only. I'm
34 ;; not sure at all that this is the right way to do it, but let's hope
35 ;; it works for now, and wait for a guru to point out the Right Way to
36 ;; achieve this.
37 ;;(eval-when-compile
38 ;; (unless (fboundp 'dired-insert-set-properties)
39 ;; (fset 'dired-insert-set-properties 'ignore)))
40 ;; Gerd suggests this:
41 (eval-when-compile (require 'dired))
42 ;; Note that dired is required at run-time, too, when it is needed.
43 ;; It is only needed on XEmacs for the function
44 ;; `dired-insert-set-properties'.
46 (defcustom tramp-inline-compress-start-size 4096
47 "*The minimum size of compressing where inline transfer.
48 When inline transfer, compress transfered data of file
49 whose size is this value or above (up to `tramp-copy-size-limit').
50 If it is nil, no compression at all will be applied."
51 :group 'tramp
52 :type '(choice (const nil) integer))
54 (defcustom tramp-copy-size-limit 10240
55 "*The maximum file size where inline copying is preferred over an out-of-the-band copy.
56 If it is nil, inline out-of-the-band copy will be used without a check."
57 :group 'tramp
58 :type '(choice (const nil) integer))
60 ;;;###tramp-autoload
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."
66 :group 'tramp
67 :type 'string)
69 ;; ksh on OpenBSD 4.5 requires that $PS1 contains a `#' character for
70 ;; root users. It uses the `$' character for other users. In order
71 ;; to guarantee a proper prompt, we use "#$ " for the prompt.
73 (defvar tramp-end-of-output
74 (format
75 "///%s#$"
76 (md5 (concat (prin1-to-string process-environment) (current-time-string))))
77 "String used to recognize end of output.
78 The '$' character at the end is quoted; the string cannot be
79 detected as prompt when being sent on echoing hosts, therefore.")
81 ;;;###tramp-autoload
82 (defconst tramp-initial-end-of-output "#$ "
83 "Prompt when establishing a connection.")
85 ;; Initialize `tramp-methods' with the supported methods.
86 ;;;###tramp-autoload
87 (add-to-list 'tramp-methods
88 '("rcp"
89 (tramp-login-program "rsh")
90 (tramp-login-args (("%h") ("-l" "%u")))
91 (tramp-remote-sh "/bin/sh")
92 (tramp-copy-program "rcp")
93 (tramp-copy-args (("-p" "%k") ("-r")))
94 (tramp-copy-keep-date t)
95 (tramp-copy-recursive t)))
96 ;;;###tramp-autoload
97 (add-to-list 'tramp-methods
98 '("remcp"
99 (tramp-login-program "remsh")
100 (tramp-login-args (("%h") ("-l" "%u")))
101 (tramp-remote-sh "/bin/sh")
102 (tramp-copy-program "rcp")
103 (tramp-copy-args (("-p" "%k")))
104 (tramp-copy-keep-date t)))
105 ;;;###tramp-autoload
106 (add-to-list 'tramp-methods
107 '("scp"
108 (tramp-login-program "ssh")
109 (tramp-login-args (("-l" "%u") ("-p" "%p") ("-e" "none") ("%h")))
110 (tramp-async-args (("-q")))
111 (tramp-remote-sh "/bin/sh")
112 (tramp-copy-program "scp")
113 (tramp-copy-args (("-P" "%p") ("-p" "%k") ("-q") ("-r")))
114 (tramp-copy-keep-date t)
115 (tramp-copy-recursive t)
116 (tramp-gw-args (("-o" "GlobalKnownHostsFile=/dev/null")
117 ("-o" "UserKnownHostsFile=/dev/null")
118 ("-o" "StrictHostKeyChecking=no")))
119 (tramp-default-port 22)))
120 ;;;###tramp-autoload
121 (add-to-list 'tramp-methods
122 '("scp1"
123 (tramp-login-program "ssh")
124 (tramp-login-args (("-l" "%u") ("-p" "%p")
125 ("-1") ("-e" "none") ("%h")))
126 (tramp-async-args (("-q")))
127 (tramp-remote-sh "/bin/sh")
128 (tramp-copy-program "scp")
129 (tramp-copy-args (("-1") ("-P" "%p") ("-p" "%k") ("-q") ("-r")))
130 (tramp-copy-keep-date t)
131 (tramp-copy-recursive t)
132 (tramp-gw-args (("-o" "GlobalKnownHostsFile=/dev/null")
133 ("-o" "UserKnownHostsFile=/dev/null")
134 ("-o" "StrictHostKeyChecking=no")))
135 (tramp-default-port 22)))
136 ;;;###tramp-autoload
137 (add-to-list 'tramp-methods
138 '("scp2"
139 (tramp-login-program "ssh")
140 (tramp-login-args (("-l" "%u") ("-p" "%p")
141 ("-2") ("-e" "none") ("%h")))
142 (tramp-async-args (("-q")))
143 (tramp-remote-sh "/bin/sh")
144 (tramp-copy-program "scp")
145 (tramp-copy-args (("-2") ("-P" "%p") ("-p" "%k") ("-q") ("-r")))
146 (tramp-copy-keep-date t)
147 (tramp-copy-recursive t)
148 (tramp-gw-args (("-o" "GlobalKnownHostsFile=/dev/null")
149 ("-o" "UserKnownHostsFile=/dev/null")
150 ("-o" "StrictHostKeyChecking=no")))
151 (tramp-default-port 22)))
152 ;;;###tramp-autoload
153 (add-to-list 'tramp-methods
154 '("scpc"
155 (tramp-login-program "ssh")
156 (tramp-login-args (("-l" "%u") ("-p" "%p")
157 ("-o" "ControlPath=%t.%%r@%%h:%%p")
158 ("-o" "ControlMaster=yes")
159 ("-e" "none") ("%h")))
160 (tramp-async-args (("-q")))
161 (tramp-remote-sh "/bin/sh")
162 (tramp-copy-program "scp")
163 (tramp-copy-args (("-P" "%p") ("-p" "%k") ("-q") ("-r")
164 ("-o" "ControlPath=%t.%%r@%%h:%%p")
165 ("-o" "ControlMaster=auto")))
166 (tramp-copy-keep-date t)
167 (tramp-copy-recursive t)
168 (tramp-gw-args (("-o" "GlobalKnownHostsFile=/dev/null")
169 ("-o" "UserKnownHostsFile=/dev/null")
170 ("-o" "StrictHostKeyChecking=no")))
171 (tramp-default-port 22)))
172 ;;;###tramp-autoload
173 (add-to-list 'tramp-methods
174 '("scpx"
175 (tramp-login-program "ssh")
176 (tramp-login-args (("-l" "%u") ("-p" "%p")
177 ("-e" "none") ("-t" "-t")
178 ("%h") ("/bin/sh")))
179 (tramp-async-args (("-q")))
180 (tramp-remote-sh "/bin/sh")
181 (tramp-copy-program "scp")
182 (tramp-copy-args (("-P" "%p") ("-p" "%k") ("-q") ("-r")))
183 (tramp-copy-keep-date t)
184 (tramp-copy-recursive t)
185 (tramp-gw-args (("-o" "GlobalKnownHostsFile=/dev/null")
186 ("-o" "UserKnownHostsFile=/dev/null")
187 ("-o" "StrictHostKeyChecking=no")))
188 (tramp-default-port 22)))
189 ;;;###tramp-autoload
190 (add-to-list 'tramp-methods
191 '("sftp"
192 (tramp-login-program "ssh")
193 (tramp-login-args (("-l" "%u") ("-p" "%p") ("-e" "none") ("%h")))
194 (tramp-async-args (("-q")))
195 (tramp-remote-sh "/bin/sh")
196 (tramp-copy-program "sftp")))
197 ;;;###tramp-autoload
198 (add-to-list 'tramp-methods
199 '("rsync"
200 (tramp-login-program "ssh")
201 (tramp-login-args (("-l" "%u") ("-p" "%p") ("-e" "none") ("%h")))
202 (tramp-async-args (("-q")))
203 (tramp-remote-sh "/bin/sh")
204 (tramp-copy-program "rsync")
205 (tramp-copy-args (("-e" "ssh") ("-t" "%k") ("-r")))
206 (tramp-copy-keep-date t)
207 (tramp-copy-keep-tmpfile t)
208 (tramp-copy-recursive t)))
209 ;;;###tramp-autoload
210 (add-to-list 'tramp-methods
211 `("rsyncc"
212 (tramp-login-program "ssh")
213 (tramp-login-args (("-l" "%u") ("-p" "%p")
214 ("-o" "ControlPath=%t.%%r@%%h:%%p")
215 ("-o" "ControlMaster=yes")
216 ("-e" "none") ("%h")))
217 (tramp-async-args (("-q")))
218 (tramp-remote-sh "/bin/sh")
219 (tramp-copy-program "rsync")
220 (tramp-copy-args (("-t" "%k") ("-r")))
221 (tramp-copy-env (("RSYNC_RSH")
222 (,(concat
223 "ssh"
224 " -o ControlPath=%t.%%r@%%h:%%p"
225 " -o ControlMaster=auto"))))
226 (tramp-copy-keep-date t)
227 (tramp-copy-keep-tmpfile t)
228 (tramp-copy-recursive t)))
229 ;;;###tramp-autoload
230 (add-to-list 'tramp-methods
231 '("rsh"
232 (tramp-login-program "rsh")
233 (tramp-login-args (("%h") ("-l" "%u")))
234 (tramp-remote-sh "/bin/sh")))
235 ;;;###tramp-autoload
236 (add-to-list 'tramp-methods
237 '("remsh"
238 (tramp-login-program "remsh")
239 (tramp-login-args (("%h") ("-l" "%u")))
240 (tramp-remote-sh "/bin/sh")))
241 ;;;###tramp-autoload
242 (add-to-list 'tramp-methods
243 '("ssh"
244 (tramp-login-program "ssh")
245 (tramp-login-args (("-l" "%u") ("-p" "%p") ("-e" "none") ("%h")))
246 (tramp-async-args (("-q")))
247 (tramp-remote-sh "/bin/sh")
248 (tramp-gw-args (("-o" "GlobalKnownHostsFile=/dev/null")
249 ("-o" "UserKnownHostsFile=/dev/null")
250 ("-o" "StrictHostKeyChecking=no")))
251 (tramp-default-port 22)))
252 ;;;###tramp-autoload
253 (add-to-list 'tramp-methods
254 '("ssh1"
255 (tramp-login-program "ssh")
256 (tramp-login-args (("-l" "%u") ("-p" "%p")
257 ("-1") ("-e" "none") ("%h")))
258 (tramp-async-args (("-q")))
259 (tramp-remote-sh "/bin/sh")
260 (tramp-gw-args (("-o" "GlobalKnownHostsFile=/dev/null")
261 ("-o" "UserKnownHostsFile=/dev/null")
262 ("-o" "StrictHostKeyChecking=no")))
263 (tramp-default-port 22)))
264 ;;;###tramp-autoload
265 (add-to-list 'tramp-methods
266 '("ssh2"
267 (tramp-login-program "ssh")
268 (tramp-login-args (("-l" "%u") ("-p" "%p")
269 ("-2") ("-e" "none") ("%h")))
270 (tramp-async-args (("-q")))
271 (tramp-remote-sh "/bin/sh")
272 (tramp-gw-args (("-o" "GlobalKnownHostsFile=/dev/null")
273 ("-o" "UserKnownHostsFile=/dev/null")
274 ("-o" "StrictHostKeyChecking=no")))
275 (tramp-default-port 22)))
276 ;;;###tramp-autoload
277 (add-to-list 'tramp-methods
278 '("sshx"
279 (tramp-login-program "ssh")
280 (tramp-login-args (("-l" "%u") ("-p" "%p")
281 ("-e" "none") ("-t" "-t")
282 ("%h") ("/bin/sh")))
283 (tramp-async-args (("-q")))
284 (tramp-remote-sh "/bin/sh")
285 (tramp-gw-args (("-o" "GlobalKnownHostsFile=/dev/null")
286 ("-o" "UserKnownHostsFile=/dev/null")
287 ("-o" "StrictHostKeyChecking=no")))
288 (tramp-default-port 22)))
289 ;;;###tramp-autoload
290 (add-to-list 'tramp-methods
291 '("telnet"
292 (tramp-login-program "telnet")
293 (tramp-login-args (("%h") ("%p")))
294 (tramp-remote-sh "/bin/sh")
295 (tramp-default-port 23)))
296 ;;;###tramp-autoload
297 (add-to-list 'tramp-methods
298 '("su"
299 (tramp-login-program "su")
300 (tramp-login-args (("-") ("%u")))
301 (tramp-remote-sh "/bin/sh")))
302 ;;;###tramp-autoload
303 (add-to-list 'tramp-methods
304 '("sudo"
305 (tramp-login-program "sudo")
306 (tramp-login-args (("-u" "%u") ("-s") ("-H") ("-p" "Password:")))
307 (tramp-remote-sh "/bin/sh")))
308 ;;;###tramp-autoload
309 (add-to-list 'tramp-methods
310 '("ksu"
311 (tramp-login-program "ksu")
312 (tramp-login-args (("%u") ("-q")))
313 (tramp-remote-sh "/bin/sh")))
314 ;;;###tramp-autoload
315 (add-to-list 'tramp-methods
316 '("krlogin"
317 (tramp-login-program "krlogin")
318 (tramp-login-args (("%h") ("-l" "%u") ("-x")))
319 (tramp-remote-sh "/bin/sh")))
320 ;;;###tramp-autoload
321 (add-to-list 'tramp-methods
322 '("plink"
323 (tramp-login-program "plink")
324 (tramp-login-args (("-l" "%u") ("-P" "%p") ("-ssh") ("%h")))
325 (tramp-remote-sh "/bin/sh")
326 (tramp-password-end-of-line "xy") ;see docstring for "xy"
327 (tramp-default-port 22)))
328 ;;;###tramp-autoload
329 (add-to-list 'tramp-methods
330 '("plink1"
331 (tramp-login-program "plink")
332 (tramp-login-args (("-l" "%u") ("-P" "%p") ("-1" "-ssh") ("%h")))
333 (tramp-remote-sh "/bin/sh")
334 (tramp-password-end-of-line "xy") ;see docstring for "xy"
335 (tramp-default-port 22)))
336 ;;;###tramp-autoload
337 (add-to-list 'tramp-methods
338 `("plinkx"
339 (tramp-login-program "plink")
340 ;; ("%h") must be a single element, see
341 ;; `tramp-compute-multi-hops'.
342 (tramp-login-args (("-load") ("%h") ("-t")
343 (,(format
344 "env 'TERM=%s' 'PROMPT_COMMAND=' 'PS1=%s'"
345 tramp-terminal-type
346 tramp-initial-end-of-output))
347 ("/bin/sh")))
348 (tramp-remote-sh "/bin/sh")))
349 ;;;###tramp-autoload
350 (add-to-list 'tramp-methods
351 '("pscp"
352 (tramp-login-program "plink")
353 (tramp-login-args (("-l" "%u") ("-P" "%p") ("-ssh") ("%h")))
354 (tramp-remote-sh "/bin/sh")
355 (tramp-copy-program "pscp")
356 (tramp-copy-args (("-P" "%p") ("-scp") ("-p" "%k")
357 ("-q") ("-r")))
358 (tramp-copy-keep-date t)
359 (tramp-copy-recursive t)
360 (tramp-password-end-of-line "xy") ;see docstring for "xy"
361 (tramp-default-port 22)))
362 ;;;###tramp-autoload
363 (add-to-list 'tramp-methods
364 '("psftp"
365 (tramp-login-program "plink")
366 (tramp-login-args (("-l" "%u") ("-P" "%p") ("-ssh") ("%h")))
367 (tramp-remote-sh "/bin/sh")
368 (tramp-copy-program "pscp")
369 (tramp-copy-args (("-P" "%p") ("-sftp") ("-p" "%k")
370 ("-q") ("-r")))
371 (tramp-copy-keep-date t)
372 (tramp-copy-recursive t)
373 (tramp-password-end-of-line "xy"))) ;see docstring for "xy"
374 ;;;###tramp-autoload
375 (add-to-list 'tramp-methods
376 '("fcp"
377 (tramp-login-program "fsh")
378 (tramp-login-args (("%h") ("-l" "%u") ("sh" "-i")))
379 (tramp-remote-sh "/bin/sh -i")
380 (tramp-copy-program "fcp")
381 (tramp-copy-args (("-p" "%k")))
382 (tramp-copy-keep-date t)))
384 ;;;###tramp-autoload
385 (add-to-list 'tramp-default-method-alist
386 `(,tramp-local-host-regexp "\\`root\\'" "su"))
388 ;;;###tramp-autoload
389 (add-to-list 'tramp-default-user-alist
390 `(,(concat "\\`" (regexp-opt '("su" "sudo" "ksu")) "\\'")
391 nil "root"))
392 ;; Do not add "ssh" based methods, otherwise ~/.ssh/config would be ignored.
393 ;;;###tramp-autoload
394 (add-to-list 'tramp-default-user-alist
395 `(,(concat
396 "\\`"
397 (regexp-opt
398 '("rcp" "remcp" "rsh" "telnet" "krlogin"
399 "plink" "plink1" "pscp" "psftp" "fcp"))
400 "\\'")
401 nil ,(user-login-name)))
403 (defconst tramp-completion-function-alist-rsh
404 '((tramp-parse-rhosts "/etc/hosts.equiv")
405 (tramp-parse-rhosts "~/.rhosts"))
406 "Default list of (FUNCTION FILE) pairs to be examined for rsh methods.")
408 (defconst tramp-completion-function-alist-ssh
409 '((tramp-parse-rhosts "/etc/hosts.equiv")
410 (tramp-parse-rhosts "/etc/shosts.equiv")
411 (tramp-parse-shosts "/etc/ssh_known_hosts")
412 (tramp-parse-sconfig "/etc/ssh_config")
413 (tramp-parse-shostkeys "/etc/ssh2/hostkeys")
414 (tramp-parse-sknownhosts "/etc/ssh2/knownhosts")
415 (tramp-parse-rhosts "~/.rhosts")
416 (tramp-parse-rhosts "~/.shosts")
417 (tramp-parse-shosts "~/.ssh/known_hosts")
418 (tramp-parse-sconfig "~/.ssh/config")
419 (tramp-parse-shostkeys "~/.ssh2/hostkeys")
420 (tramp-parse-sknownhosts "~/.ssh2/knownhosts"))
421 "Default list of (FUNCTION FILE) pairs to be examined for ssh methods.")
423 (defconst tramp-completion-function-alist-telnet
424 '((tramp-parse-hosts "/etc/hosts"))
425 "Default list of (FUNCTION FILE) pairs to be examined for telnet methods.")
427 (defconst tramp-completion-function-alist-su
428 '((tramp-parse-passwd "/etc/passwd"))
429 "Default list of (FUNCTION FILE) pairs to be examined for su methods.")
431 (defconst tramp-completion-function-alist-putty
432 '((tramp-parse-putty
433 "HKEY_CURRENT_USER\\Software\\SimonTatham\\PuTTY\\Sessions"))
434 "Default list of (FUNCTION REGISTRY) pairs to be examined for putty methods.")
436 (tramp-set-completion-function "rcp" tramp-completion-function-alist-rsh)
437 (tramp-set-completion-function "remcp" tramp-completion-function-alist-rsh)
438 (tramp-set-completion-function "scp" tramp-completion-function-alist-ssh)
439 (tramp-set-completion-function "scp1" tramp-completion-function-alist-ssh)
440 (tramp-set-completion-function "scp2" tramp-completion-function-alist-ssh)
441 (tramp-set-completion-function "scpc" tramp-completion-function-alist-ssh)
442 (tramp-set-completion-function "scpx" tramp-completion-function-alist-ssh)
443 (tramp-set-completion-function "sftp" tramp-completion-function-alist-ssh)
444 (tramp-set-completion-function "rsync" tramp-completion-function-alist-ssh)
445 (tramp-set-completion-function "rsyncc" tramp-completion-function-alist-ssh)
446 (tramp-set-completion-function "rsh" tramp-completion-function-alist-rsh)
447 (tramp-set-completion-function "remsh" tramp-completion-function-alist-rsh)
448 (tramp-set-completion-function "ssh" tramp-completion-function-alist-ssh)
449 (tramp-set-completion-function "ssh1" tramp-completion-function-alist-ssh)
450 (tramp-set-completion-function "ssh2" tramp-completion-function-alist-ssh)
451 (tramp-set-completion-function "ssh1_old" tramp-completion-function-alist-ssh)
452 (tramp-set-completion-function "ssh2_old" tramp-completion-function-alist-ssh)
453 (tramp-set-completion-function "sshx" tramp-completion-function-alist-ssh)
454 (tramp-set-completion-function "telnet" tramp-completion-function-alist-telnet)
455 (tramp-set-completion-function "su" tramp-completion-function-alist-su)
456 (tramp-set-completion-function "sudo" tramp-completion-function-alist-su)
457 (tramp-set-completion-function "ksu" tramp-completion-function-alist-su)
458 (tramp-set-completion-function "krlogin" tramp-completion-function-alist-rsh)
459 (tramp-set-completion-function "plink" tramp-completion-function-alist-ssh)
460 (tramp-set-completion-function "plink1" tramp-completion-function-alist-ssh)
461 (tramp-set-completion-function "plinkx" tramp-completion-function-alist-putty)
462 (tramp-set-completion-function "pscp" tramp-completion-function-alist-ssh)
463 (tramp-set-completion-function "fcp" tramp-completion-function-alist-ssh)
465 ;; "getconf PATH" yields:
466 ;; HP-UX: /usr/bin:/usr/ccs/bin:/opt/ansic/bin:/opt/langtools/bin:/opt/fortran/bin
467 ;; Solaris: /usr/xpg4/bin:/usr/ccs/bin:/usr/bin:/opt/SUNWspro/bin
468 ;; GNU/Linux (Debian, Suse): /bin:/usr/bin
469 ;; FreeBSD: /usr/bin:/bin:/usr/sbin:/sbin: - beware trailing ":"!
470 ;; IRIX64: /usr/bin
471 (defcustom tramp-remote-path
472 '(tramp-default-remote-path "/usr/sbin" "/usr/local/bin"
473 "/local/bin" "/local/freeware/bin" "/local/gnu/bin"
474 "/usr/freeware/bin" "/usr/pkg/bin" "/usr/contrib/bin")
475 "*List of directories to search for executables on remote host.
476 For every remote host, this variable will be set buffer local,
477 keeping the list of existing directories on that host.
479 You can use `~' in this list, but when searching for a shell which groks
480 tilde expansion, all directory names starting with `~' will be ignored.
482 `Default Directories' represent the list of directories given by
483 the command \"getconf PATH\". It is recommended to use this
484 entry on top of this list, because these are the default
485 directories for POSIX compatible commands. On remote hosts which
486 do not offer the getconf command (like cygwin), the value
487 \"/bin:/usr/bin\" is used instead of.
489 `Private Directories' are the settings of the $PATH environment,
490 as given in your `~/.profile'."
491 :group 'tramp
492 :type '(repeat (choice
493 (const :tag "Default Directories" tramp-default-remote-path)
494 (const :tag "Private Directories" tramp-own-remote-path)
495 (string :tag "Directory"))))
497 (defcustom tramp-remote-process-environment
498 `("HISTFILE=$HOME/.tramp_history" "HISTSIZE=1" "LC_ALL=C"
499 ,(format "TERM=%s" tramp-terminal-type)
500 "EMACS=t" ;; Deprecated.
501 ,(format "INSIDE_EMACS='%s,tramp:%s'" emacs-version tramp-version)
502 "CDPATH=" "HISTORY=" "MAIL=" "MAILCHECK=" "MAILPATH="
503 "autocorrect=" "correct=")
505 "*List of environment variables to be set on the remote host.
507 Each element should be a string of the form ENVVARNAME=VALUE. An
508 entry ENVVARNAME= diables the corresponding environment variable,
509 which might have been set in the init files like ~/.profile.
511 Special handling is applied to the PATH environment, which should
512 not be set here. Instead, it should be set via `tramp-remote-path'."
513 :group 'tramp
514 :type '(repeat string))
516 (defcustom tramp-sh-extra-args '(("/bash\\'" . "-norc -noprofile"))
517 "*Alist specifying extra arguments to pass to the remote shell.
518 Entries are (REGEXP . ARGS) where REGEXP is a regular expression
519 matching the shell file name and ARGS is a string specifying the
520 arguments.
522 This variable is only used when Tramp needs to start up another shell
523 for tilde expansion. The extra arguments should typically prevent the
524 shell from reading its init file."
525 :group 'tramp
526 ;; This might be the wrong way to test whether the widget type
527 ;; `alist' is available. Who knows the right way to test it?
528 :type (if (get 'alist 'widget-type)
529 '(alist :key-type string :value-type string)
530 '(repeat (cons string string))))
532 (defconst tramp-actions-before-shell
533 '((tramp-login-prompt-regexp tramp-action-login)
534 (tramp-password-prompt-regexp tramp-action-password)
535 (tramp-wrong-passwd-regexp tramp-action-permission-denied)
536 (shell-prompt-pattern tramp-action-succeed)
537 (tramp-shell-prompt-pattern tramp-action-succeed)
538 (tramp-yesno-prompt-regexp tramp-action-yesno)
539 (tramp-yn-prompt-regexp tramp-action-yn)
540 (tramp-terminal-prompt-regexp tramp-action-terminal)
541 (tramp-process-alive-regexp tramp-action-process-alive))
542 "List of pattern/action pairs.
543 Whenever a pattern matches, the corresponding action is performed.
544 Each item looks like (PATTERN ACTION).
546 The PATTERN should be a symbol, a variable. The value of this
547 variable gives the regular expression to search for. Note that the
548 regexp must match at the end of the buffer, \"\\'\" is implicitly
549 appended to it.
551 The ACTION should also be a symbol, but a function. When the
552 corresponding PATTERN matches, the ACTION function is called.")
554 (defconst tramp-actions-copy-out-of-band
555 '((tramp-password-prompt-regexp tramp-action-password)
556 (tramp-wrong-passwd-regexp tramp-action-permission-denied)
557 (tramp-copy-failed-regexp tramp-action-permission-denied)
558 (tramp-process-alive-regexp tramp-action-out-of-band))
559 "List of pattern/action pairs.
560 This list is used for copying/renaming with out-of-band methods.
562 See `tramp-actions-before-shell' for more info.")
564 (defconst tramp-uudecode
565 "(echo begin 600 /tmp/tramp.$$; tail +2) | uudecode
566 cat /tmp/tramp.$$
567 rm -f /tmp/tramp.$$"
568 "Shell function to implement `uudecode' to standard output.
569 Many systems support `uudecode -o /dev/stdout' or `uudecode -o -'
570 for this or `uudecode -p', but some systems don't, and for them
571 we have this shell function.")
573 (defconst tramp-perl-file-truename
574 "%s -e '
575 use File::Spec;
576 use Cwd \"realpath\";
578 sub recursive {
579 my ($volume, @dirs) = @_;
580 my $real = realpath(File::Spec->catpath(
581 $volume, File::Spec->catdir(@dirs), \"\"));
582 if ($real) {
583 my ($vol, $dir) = File::Spec->splitpath($real, 1);
584 return ($vol, File::Spec->splitdir($dir));
586 else {
587 my $last = pop(@dirs);
588 ($volume, @dirs) = recursive($volume, @dirs);
589 push(@dirs, $last);
590 return ($volume, @dirs);
594 $result = realpath($ARGV[0]);
595 if (!$result) {
596 my ($vol, $dir) = File::Spec->splitpath($ARGV[0], 1);
597 ($vol, @dirs) = recursive($vol, File::Spec->splitdir($dir));
599 $result = File::Spec->catpath($vol, File::Spec->catdir(@dirs), \"\");
602 if ($ARGV[0] =~ /\\/$/) {
603 $result = $result . \"/\";
606 print \"\\\"$result\\\"\\n\";
607 ' \"$1\" 2>/dev/null"
608 "Perl script to produce output suitable for use with `file-truename'
609 on the remote file system.
610 Escape sequence %s is replaced with name of Perl binary.
611 This string is passed to `format', so percent characters need to be doubled.")
613 (defconst tramp-perl-file-name-all-completions
614 "%s -e 'sub case {
615 my $str = shift;
616 if ($ARGV[2]) {
617 return lc($str);
619 else {
620 return $str;
623 opendir(d, $ARGV[0]) || die(\"$ARGV[0]: $!\\nfail\\n\");
624 @files = readdir(d); closedir(d);
625 foreach $f (@files) {
626 if (case(substr($f, 0, length($ARGV[1]))) eq case($ARGV[1])) {
627 if (-d \"$ARGV[0]/$f\") {
628 print \"$f/\\n\";
630 else {
631 print \"$f\\n\";
635 print \"ok\\n\"
636 ' \"$1\" \"$2\" \"$3\" 2>/dev/null"
637 "Perl script to produce output suitable for use with
638 `file-name-all-completions' on the remote file system. Escape
639 sequence %s is replaced with name of Perl binary. This string is
640 passed to `format', so percent characters need to be doubled.")
642 ;; Perl script to implement `file-attributes' in a Lisp `read'able
643 ;; output. If you are hacking on this, note that you get *no* output
644 ;; unless this spits out a complete line, including the '\n' at the
645 ;; end.
646 ;; The device number is returned as "-1", because there will be a virtual
647 ;; device number set in `tramp-sh-handle-file-attributes'.
648 (defconst tramp-perl-file-attributes
649 "%s -e '
650 @stat = lstat($ARGV[0]);
651 if (!@stat) {
652 print \"nil\\n\";
653 exit 0;
655 if (($stat[2] & 0170000) == 0120000)
657 $type = readlink($ARGV[0]);
658 $type = \"\\\"$type\\\"\";
660 elsif (($stat[2] & 0170000) == 040000)
662 $type = \"t\";
664 else
666 $type = \"nil\"
668 $uid = ($ARGV[1] eq \"integer\") ? $stat[4] : \"\\\"\" . getpwuid($stat[4]) . \"\\\"\";
669 $gid = ($ARGV[1] eq \"integer\") ? $stat[5] : \"\\\"\" . getgrgid($stat[5]) . \"\\\"\";
670 printf(
671 \"(%%s %%u %%s %%s (%%u %%u) (%%u %%u) (%%u %%u) %%u.0 %%u t (%%u . %%u) -1)\\n\",
672 $type,
673 $stat[3],
674 $uid,
675 $gid,
676 $stat[8] >> 16 & 0xffff,
677 $stat[8] & 0xffff,
678 $stat[9] >> 16 & 0xffff,
679 $stat[9] & 0xffff,
680 $stat[10] >> 16 & 0xffff,
681 $stat[10] & 0xffff,
682 $stat[7],
683 $stat[2],
684 $stat[1] >> 16 & 0xffff,
685 $stat[1] & 0xffff
686 );' \"$1\" \"$2\" 2>/dev/null"
687 "Perl script to produce output suitable for use with `file-attributes'
688 on the remote file system.
689 Escape sequence %s is replaced with name of Perl binary.
690 This string is passed to `format', so percent characters need to be doubled.")
692 (defconst tramp-perl-directory-files-and-attributes
693 "%s -e '
694 chdir($ARGV[0]) or printf(\"\\\"Cannot change to $ARGV[0]: $''!''\\\"\\n\"), exit();
695 opendir(DIR,\".\") or printf(\"\\\"Cannot open directory $ARGV[0]: $''!''\\\"\\n\"), exit();
696 @list = readdir(DIR);
697 closedir(DIR);
698 $n = scalar(@list);
699 printf(\"(\\n\");
700 for($i = 0; $i < $n; $i++)
702 $filename = $list[$i];
703 @stat = lstat($filename);
704 if (($stat[2] & 0170000) == 0120000)
706 $type = readlink($filename);
707 $type = \"\\\"$type\\\"\";
709 elsif (($stat[2] & 0170000) == 040000)
711 $type = \"t\";
713 else
715 $type = \"nil\"
717 $uid = ($ARGV[1] eq \"integer\") ? $stat[4] : \"\\\"\" . getpwuid($stat[4]) . \"\\\"\";
718 $gid = ($ARGV[1] eq \"integer\") ? $stat[5] : \"\\\"\" . getgrgid($stat[5]) . \"\\\"\";
719 printf(
720 \"(\\\"%%s\\\" %%s %%u %%s %%s (%%u %%u) (%%u %%u) (%%u %%u) %%u.0 %%u t (%%u . %%u) (%%u . %%u))\\n\",
721 $filename,
722 $type,
723 $stat[3],
724 $uid,
725 $gid,
726 $stat[8] >> 16 & 0xffff,
727 $stat[8] & 0xffff,
728 $stat[9] >> 16 & 0xffff,
729 $stat[9] & 0xffff,
730 $stat[10] >> 16 & 0xffff,
731 $stat[10] & 0xffff,
732 $stat[7],
733 $stat[2],
734 $stat[1] >> 16 & 0xffff,
735 $stat[1] & 0xffff,
736 $stat[0] >> 16 & 0xffff,
737 $stat[0] & 0xffff);
739 printf(\")\\n\");' \"$1\" \"$2\" 2>/dev/null"
740 "Perl script implementing `directory-files-attributes' as Lisp `read'able
741 output.
742 Escape sequence %s is replaced with name of Perl binary.
743 This string is passed to `format', so percent characters need to be doubled.")
745 ;; These two use base64 encoding.
746 (defconst tramp-perl-encode-with-module
747 "%s -MMIME::Base64 -0777 -ne 'print encode_base64($_)' 2>/dev/null"
748 "Perl program to use for encoding a file.
749 Escape sequence %s is replaced with name of Perl binary.
750 This string is passed to `format', so percent characters need to be doubled.
751 This implementation requires the MIME::Base64 Perl module to be installed
752 on the remote host.")
754 (defconst tramp-perl-decode-with-module
755 "%s -MMIME::Base64 -0777 -ne 'print decode_base64($_)' 2>/dev/null"
756 "Perl program to use for decoding a file.
757 Escape sequence %s is replaced with name of Perl binary.
758 This string is passed to `format', so percent characters need to be doubled.
759 This implementation requires the MIME::Base64 Perl module to be installed
760 on the remote host.")
762 (defconst tramp-perl-encode
763 "%s -e '
764 # This script contributed by Juanma Barranquero <lektu@terra.es>.
765 # Copyright (C) 2002-2011 Free Software Foundation, Inc.
766 use strict;
768 my %%trans = do {
769 my $i = 0;
770 map {(substr(unpack(q(B8), chr $i++), 2, 6), $_)}
771 split //, q(ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/);
774 binmode(\\*STDIN);
776 # We read in chunks of 54 bytes, to generate output lines
777 # of 72 chars (plus end of line)
778 $/ = \\54;
780 while (my $data = <STDIN>) {
781 my $pad = q();
783 # Only for the last chunk, and only if did not fill the last three-byte packet
784 if (eof) {
785 my $mod = length($data) %% 3;
786 $pad = q(=) x (3 - $mod) if $mod;
789 # Not the fastest method, but it is simple: unpack to binary string, split
790 # by groups of 6 bits and convert back from binary to byte; then map into
791 # the translation table
792 print
793 join q(),
794 map($trans{$_},
795 (substr(unpack(q(B*), $data) . q(00000), 0, 432) =~ /....../g)),
796 $pad,
797 qq(\\n);
798 }' 2>/dev/null"
799 "Perl program to use for encoding 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.")
803 (defconst tramp-perl-decode
804 "%s -e '
805 # This script contributed by Juanma Barranquero <lektu@terra.es>.
806 # Copyright (C) 2002-2011 Free Software Foundation, Inc.
807 use strict;
809 my %%trans = do {
810 my $i = 0;
811 map {($_, substr(unpack(q(B8), chr $i++), 2, 6))}
812 split //, q(ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/)
815 my %%bytes = map {(unpack(q(B8), chr $_), chr $_)} 0 .. 255;
817 binmode(\\*STDOUT);
819 # We are going to accumulate into $pending to accept any line length
820 # (we do not check they are <= 76 chars as the RFC says)
821 my $pending = q();
823 while (my $data = <STDIN>) {
824 chomp $data;
826 # If we find one or two =, we have reached the end and
827 # any following data is to be discarded
828 my $finished = $data =~ s/(==?).*/$1/;
829 $pending .= $data;
831 my $len = length($pending);
832 my $chunk = substr($pending, 0, $len & ~3);
833 $pending = substr($pending, $len & ~3 + 1);
835 # Easy method: translate from chars to (pregenerated) six-bit packets, join,
836 # split in 8-bit chunks and convert back to char.
837 print join q(),
838 map $bytes{$_},
839 ((join q(), map {$trans{$_} || q()} split //, $chunk) =~ /......../g);
841 last if $finished;
842 }' 2>/dev/null"
843 "Perl program to use for decoding a file.
844 Escape sequence %s is replaced with name of Perl binary.
845 This string is passed to `format', so percent characters need to be doubled.")
847 (defconst tramp-vc-registered-read-file-names
848 "echo \"(\"
849 while read file; do
850 if %s \"$file\"; then
851 echo \"(\\\"$file\\\" \\\"file-exists-p\\\" t)\"
852 else
853 echo \"(\\\"$file\\\" \\\"file-exists-p\\\" nil)\"
855 if %s \"$file\"; then
856 echo \"(\\\"$file\\\" \\\"file-readable-p\\\" t)\"
857 else
858 echo \"(\\\"$file\\\" \\\"file-readable-p\\\" nil)\"
860 done
861 echo \")\""
862 "Script to check existence of VC related files.
863 It must be send formatted with two strings; the tests for file
864 existence, and file readability. Input shall be read via
865 here-document, otherwise the command could exceed maximum length
866 of command line.")
868 (defconst tramp-file-mode-type-map
869 '((0 . "-") ; Normal file (SVID-v2 and XPG2)
870 (1 . "p") ; fifo
871 (2 . "c") ; character device
872 (3 . "m") ; multiplexed character device (v7)
873 (4 . "d") ; directory
874 (5 . "?") ; Named special file (XENIX)
875 (6 . "b") ; block device
876 (7 . "?") ; multiplexed block device (v7)
877 (8 . "-") ; regular file
878 (9 . "n") ; network special file (HP-UX)
879 (10 . "l") ; symlink
880 (11 . "?") ; ACL shadow inode (Solaris, not userspace)
881 (12 . "s") ; socket
882 (13 . "D") ; door special (Solaris)
883 (14 . "w")) ; whiteout (BSD)
884 "A list of file types returned from the `stat' system call.
885 This is used to map a mode number to a permission string.")
887 ;; New handlers should be added here. The following operations can be
888 ;; handled using the normal primitives: file-name-sans-versions,
889 ;; get-file-buffer.
890 (defconst tramp-sh-file-name-handler-alist
891 '((load . tramp-handle-load)
892 (make-symbolic-link . tramp-sh-handle-make-symbolic-link)
893 (file-name-as-directory . tramp-handle-file-name-as-directory)
894 (file-name-directory . tramp-handle-file-name-directory)
895 (file-name-nondirectory . tramp-handle-file-name-nondirectory)
896 (file-truename . tramp-sh-handle-file-truename)
897 (file-exists-p . tramp-sh-handle-file-exists-p)
898 (file-directory-p . tramp-sh-handle-file-directory-p)
899 (file-executable-p . tramp-sh-handle-file-executable-p)
900 (file-readable-p . tramp-sh-handle-file-readable-p)
901 (file-regular-p . tramp-handle-file-regular-p)
902 (file-symlink-p . tramp-handle-file-symlink-p)
903 (file-writable-p . tramp-sh-handle-file-writable-p)
904 (file-ownership-preserved-p . tramp-sh-handle-file-ownership-preserved-p)
905 (file-newer-than-file-p . tramp-sh-handle-file-newer-than-file-p)
906 (file-attributes . tramp-sh-handle-file-attributes)
907 (file-modes . tramp-handle-file-modes)
908 (directory-files . tramp-handle-directory-files)
909 (directory-files-and-attributes
910 . tramp-sh-handle-directory-files-and-attributes)
911 (file-name-all-completions . tramp-sh-handle-file-name-all-completions)
912 (file-name-completion . tramp-handle-file-name-completion)
913 (add-name-to-file . tramp-sh-handle-add-name-to-file)
914 (copy-file . tramp-sh-handle-copy-file)
915 (copy-directory . tramp-sh-handle-copy-directory)
916 (rename-file . tramp-sh-handle-rename-file)
917 (set-file-modes . tramp-sh-handle-set-file-modes)
918 (set-file-times . tramp-sh-handle-set-file-times)
919 (make-directory . tramp-sh-handle-make-directory)
920 (delete-directory . tramp-sh-handle-delete-directory)
921 (delete-file . tramp-sh-handle-delete-file)
922 (directory-file-name . tramp-handle-directory-file-name)
923 ;; `executable-find' is not official yet.
924 (executable-find . tramp-sh-handle-executable-find)
925 (start-file-process . tramp-sh-handle-start-file-process)
926 (process-file . tramp-sh-handle-process-file)
927 (shell-command . tramp-sh-handle-shell-command)
928 (insert-directory . tramp-sh-handle-insert-directory)
929 (expand-file-name . tramp-sh-handle-expand-file-name)
930 (substitute-in-file-name . tramp-handle-substitute-in-file-name)
931 (file-local-copy . tramp-sh-handle-file-local-copy)
932 (file-remote-p . tramp-handle-file-remote-p)
933 (insert-file-contents . tramp-handle-insert-file-contents)
934 (insert-file-contents-literally
935 . tramp-sh-handle-insert-file-contents-literally)
936 (write-region . tramp-sh-handle-write-region)
937 (find-backup-file-name . tramp-handle-find-backup-file-name)
938 (make-auto-save-file-name . tramp-sh-handle-make-auto-save-file-name)
939 (unhandled-file-name-directory . tramp-handle-unhandled-file-name-directory)
940 (dired-compress-file . tramp-sh-handle-dired-compress-file)
941 (dired-recursive-delete-directory
942 . tramp-sh-handle-dired-recursive-delete-directory)
943 (dired-uncache . tramp-handle-dired-uncache)
944 (set-visited-file-modtime . tramp-sh-handle-set-visited-file-modtime)
945 (verify-visited-file-modtime . tramp-sh-handle-verify-visited-file-modtime)
946 (file-selinux-context . tramp-sh-handle-file-selinux-context)
947 (set-file-selinux-context . tramp-sh-handle-set-file-selinux-context)
948 (vc-registered . tramp-sh-handle-vc-registered))
949 "Alist of handler functions.
950 Operations not mentioned here will be handled by the normal Emacs functions.")
952 ;; This must be the last entry, because `identity' always matches.
953 ;;;###tramp-autoload
954 (add-to-list 'tramp-foreign-file-name-handler-alist
955 '(identity . tramp-sh-file-name-handler) 'append)
957 ;;; File Name Handler Functions:
959 (defun tramp-sh-handle-make-symbolic-link
960 (filename linkname &optional ok-if-already-exists)
961 "Like `make-symbolic-link' for Tramp files.
962 If LINKNAME is a non-Tramp file, it is used verbatim as the target of
963 the symlink. If LINKNAME is a Tramp file, only the localname component is
964 used as the target of the symlink.
966 If LINKNAME is a Tramp file and the localname component is relative, then
967 it is expanded first, before the localname component is taken. Note that
968 this can give surprising results if the user/host for the source and
969 target of the symlink differ."
970 (with-parsed-tramp-file-name linkname l
971 (let ((ln (tramp-get-remote-ln l))
972 (cwd (tramp-run-real-handler
973 'file-name-directory (list l-localname))))
974 (unless ln
975 (tramp-error
976 l 'file-error
977 "Making a symbolic link. ln(1) does not exist on the remote host."))
979 ;; Do the 'confirm if exists' thing.
980 (when (file-exists-p linkname)
981 ;; What to do?
982 (if (or (null ok-if-already-exists) ; not allowed to exist
983 (and (numberp ok-if-already-exists)
984 (not (yes-or-no-p
985 (format
986 "File %s already exists; make it a link anyway? "
987 l-localname)))))
988 (tramp-error
989 l 'file-already-exists "File %s already exists" l-localname)
990 (delete-file linkname)))
992 ;; If FILENAME is a Tramp name, use just the localname component.
993 (when (tramp-tramp-file-p filename)
994 (setq filename
995 (tramp-file-name-localname
996 (tramp-dissect-file-name (expand-file-name filename)))))
998 (tramp-flush-file-property l (file-name-directory l-localname))
999 (tramp-flush-file-property l l-localname)
1001 ;; Right, they are on the same host, regardless of user, method, etc.
1002 ;; We now make the link on the remote machine. This will occur as the user
1003 ;; that FILENAME belongs to.
1004 (tramp-send-command-and-check
1006 (format
1007 "cd %s && %s -sf %s %s"
1008 (tramp-shell-quote-argument cwd)
1010 (tramp-shell-quote-argument filename)
1011 (tramp-shell-quote-argument l-localname))
1012 t))))
1014 (defun tramp-sh-handle-file-truename (filename &optional counter prev-dirs)
1015 "Like `file-truename' for Tramp files."
1016 (with-parsed-tramp-file-name (expand-file-name filename) nil
1017 (with-file-property v localname "file-truename"
1018 (let ((result nil)) ; result steps in reverse order
1019 (tramp-message v 4 "Finding true name for `%s'" filename)
1020 (cond
1021 ;; Use GNU readlink --canonicalize-missing where available.
1022 ((tramp-get-remote-readlink v)
1023 (setq result
1024 (tramp-send-command-and-read
1026 (format "echo \"\\\"`%s --canonicalize-missing %s`\\\"\""
1027 (tramp-get-remote-readlink v)
1028 (tramp-shell-quote-argument localname)))))
1030 ;; Use Perl implementation.
1031 ((and (tramp-get-remote-perl v)
1032 (tramp-get-connection-property v "perl-file-spec" nil)
1033 (tramp-get-connection-property v "perl-cwd-realpath" nil))
1034 (tramp-maybe-send-script
1035 v tramp-perl-file-truename "tramp_perl_file_truename")
1036 (setq result
1037 (tramp-send-command-and-read
1039 (format "tramp_perl_file_truename %s"
1040 (tramp-shell-quote-argument localname)))))
1042 ;; Do it yourself. We bind `directory-sep-char' here for
1043 ;; XEmacs on Windows, which would otherwise use backslash.
1044 (t (let* ((directory-sep-char ?/)
1045 (steps (tramp-compat-split-string localname "/"))
1046 (localnamedir (tramp-run-real-handler
1047 'file-name-as-directory (list localname)))
1048 (is-dir (string= localname localnamedir))
1049 (thisstep nil)
1050 (numchase 0)
1051 ;; Don't make the following value larger than
1052 ;; necessary. People expect an error message in a
1053 ;; timely fashion when something is wrong;
1054 ;; otherwise they might think that Emacs is hung.
1055 ;; Of course, correctness has to come first.
1056 (numchase-limit 20)
1057 symlink-target)
1058 (while (and steps (< numchase numchase-limit))
1059 (setq thisstep (pop steps))
1060 (tramp-message
1061 v 5 "Check %s"
1062 (mapconcat 'identity
1063 (append '("") (reverse result) (list thisstep))
1064 "/"))
1065 (setq symlink-target
1066 (nth 0 (file-attributes
1067 (tramp-make-tramp-file-name
1068 method user host
1069 (mapconcat 'identity
1070 (append '("")
1071 (reverse result)
1072 (list thisstep))
1073 "/")))))
1074 (cond ((string= "." thisstep)
1075 (tramp-message v 5 "Ignoring step `.'"))
1076 ((string= ".." thisstep)
1077 (tramp-message v 5 "Processing step `..'")
1078 (pop result))
1079 ((stringp symlink-target)
1080 ;; It's a symlink, follow it.
1081 (tramp-message v 5 "Follow symlink to %s" symlink-target)
1082 (setq numchase (1+ numchase))
1083 (when (file-name-absolute-p symlink-target)
1084 (setq result nil))
1085 ;; If the symlink was absolute, we'll get a string like
1086 ;; "/user@host:/some/target"; extract the
1087 ;; "/some/target" part from it.
1088 (when (tramp-tramp-file-p symlink-target)
1089 (unless (tramp-equal-remote filename symlink-target)
1090 (tramp-error
1091 v 'file-error
1092 "Symlink target `%s' on wrong host" symlink-target))
1093 (setq symlink-target localname))
1094 (setq steps
1095 (append (tramp-compat-split-string
1096 symlink-target "/")
1097 steps)))
1099 ;; It's a file.
1100 (setq result (cons thisstep result)))))
1101 (when (>= numchase numchase-limit)
1102 (tramp-error
1103 v 'file-error
1104 "Maximum number (%d) of symlinks exceeded" numchase-limit))
1105 (setq result (reverse result))
1106 ;; Combine list to form string.
1107 (setq result
1108 (if result
1109 (mapconcat 'identity (cons "" result) "/")
1110 "/"))
1111 (when (and is-dir (or (string= "" result)
1112 (not (string= (substring result -1) "/"))))
1113 (setq result (concat result "/"))))))
1115 (tramp-message v 4 "True name of `%s' is `%s'" filename result)
1116 (tramp-make-tramp-file-name method user host result)))))
1118 ;; Basic functions.
1120 (defun tramp-sh-handle-file-exists-p (filename)
1121 "Like `file-exists-p' for Tramp files."
1122 (with-parsed-tramp-file-name filename nil
1123 (with-file-property v localname "file-exists-p"
1124 (or (not (null (tramp-get-file-property
1125 v localname "file-attributes-integer" nil)))
1126 (not (null (tramp-get-file-property
1127 v localname "file-attributes-string" nil)))
1128 (tramp-send-command-and-check
1130 (format
1131 "%s %s"
1132 (tramp-get-file-exists-command v)
1133 (tramp-shell-quote-argument localname)))))))
1135 ;; CCC: This should check for an error condition and signal failure
1136 ;; when something goes wrong.
1137 ;; Daniel Pittman <daniel@danann.net>
1138 (defun tramp-sh-handle-file-attributes (filename &optional id-format)
1139 "Like `file-attributes' for Tramp files."
1140 (unless id-format (setq id-format 'integer))
1141 ;; Don't modify `last-coding-system-used' by accident.
1142 (let ((last-coding-system-used last-coding-system-used))
1143 (with-parsed-tramp-file-name (expand-file-name filename) nil
1144 (with-file-property v localname (format "file-attributes-%s" id-format)
1145 (save-excursion
1146 (tramp-convert-file-attributes
1149 (cond
1150 ((tramp-get-remote-stat v)
1151 (tramp-do-file-attributes-with-stat v localname id-format))
1152 ((tramp-get-remote-perl v)
1153 (tramp-do-file-attributes-with-perl v localname id-format))
1154 (t nil))
1155 ;; The scripts could fail, for example with huge file size.
1156 (tramp-do-file-attributes-with-ls v localname id-format))))))))
1158 (defun tramp-do-file-attributes-with-ls (vec localname &optional id-format)
1159 "Implement `file-attributes' for Tramp files using the ls(1) command."
1160 (let (symlinkp dirp
1161 res-inode res-filemodes res-numlinks
1162 res-uid res-gid res-size res-symlink-target)
1163 (tramp-message vec 5 "file attributes with ls: %s" localname)
1164 (tramp-send-command
1166 (format "(%s %s || %s -h %s) && %s %s %s"
1167 (tramp-get-file-exists-command vec)
1168 (tramp-shell-quote-argument localname)
1169 (tramp-get-test-command vec)
1170 (tramp-shell-quote-argument localname)
1171 (tramp-get-ls-command vec)
1172 (if (eq id-format 'integer) "-ildn" "-ild")
1173 (tramp-shell-quote-argument localname)))
1174 ;; parse `ls -l' output ...
1175 (with-current-buffer (tramp-get-buffer vec)
1176 (when (> (buffer-size) 0)
1177 (goto-char (point-min))
1178 ;; ... inode
1179 (setq res-inode
1180 (condition-case err
1181 (read (current-buffer))
1182 (invalid-read-syntax
1183 (when (and (equal (cadr err)
1184 "Integer constant overflow in reader")
1185 (string-match
1186 "^[0-9]+\\([0-9][0-9][0-9][0-9][0-9]\\)\\'"
1187 (car (cddr err))))
1188 (let* ((big (read (substring (car (cddr err)) 0
1189 (match-beginning 1))))
1190 (small (read (match-string 1 (car (cddr err)))))
1191 (twiddle (/ small 65536)))
1192 (cons (+ big twiddle)
1193 (- small (* twiddle 65536))))))))
1194 ;; ... file mode flags
1195 (setq res-filemodes (symbol-name (read (current-buffer))))
1196 ;; ... number links
1197 (setq res-numlinks (read (current-buffer)))
1198 ;; ... uid and gid
1199 (setq res-uid (read (current-buffer)))
1200 (setq res-gid (read (current-buffer)))
1201 (if (eq id-format 'integer)
1202 (progn
1203 (unless (numberp res-uid) (setq res-uid -1))
1204 (unless (numberp res-gid) (setq res-gid -1)))
1205 (progn
1206 (unless (stringp res-uid) (setq res-uid (symbol-name res-uid)))
1207 (unless (stringp res-gid) (setq res-gid (symbol-name res-gid)))))
1208 ;; ... size
1209 (setq res-size (read (current-buffer)))
1210 ;; From the file modes, figure out other stuff.
1211 (setq symlinkp (eq ?l (aref res-filemodes 0)))
1212 (setq dirp (eq ?d (aref res-filemodes 0)))
1213 ;; if symlink, find out file name pointed to
1214 (when symlinkp
1215 (search-forward "-> ")
1216 (setq res-symlink-target (buffer-substring (point) (point-at-eol))))
1217 ;; return data gathered
1218 (list
1219 ;; 0. t for directory, string (name linked to) for symbolic
1220 ;; link, or nil.
1221 (or dirp res-symlink-target)
1222 ;; 1. Number of links to file.
1223 res-numlinks
1224 ;; 2. File uid.
1225 res-uid
1226 ;; 3. File gid.
1227 res-gid
1228 ;; 4. Last access time, as a list of two integers. First
1229 ;; integer has high-order 16 bits of time, second has low 16
1230 ;; bits.
1231 ;; 5. Last modification time, likewise.
1232 ;; 6. Last status change time, likewise.
1233 '(0 0) '(0 0) '(0 0) ;CCC how to find out?
1234 ;; 7. Size in bytes (-1, if number is out of range).
1235 res-size
1236 ;; 8. File modes, as a string of ten letters or dashes as in ls -l.
1237 res-filemodes
1238 ;; 9. t if file's gid would change if file were deleted and
1239 ;; recreated. Will be set in `tramp-convert-file-attributes'
1241 ;; 10. inode number.
1242 res-inode
1243 ;; 11. Device number. Will be replaced by a virtual device number.
1245 )))))
1247 (defun tramp-do-file-attributes-with-perl
1248 (vec localname &optional id-format)
1249 "Implement `file-attributes' for Tramp files using a Perl script."
1250 (tramp-message vec 5 "file attributes with perl: %s" localname)
1251 (tramp-maybe-send-script
1252 vec tramp-perl-file-attributes "tramp_perl_file_attributes")
1253 (tramp-send-command-and-read
1255 (format "tramp_perl_file_attributes %s %s"
1256 (tramp-shell-quote-argument localname) id-format)))
1258 (defun tramp-do-file-attributes-with-stat
1259 (vec localname &optional id-format)
1260 "Implement `file-attributes' for Tramp files using stat(1) command."
1261 (tramp-message vec 5 "file attributes with stat: %s" localname)
1262 (tramp-send-command-and-read
1264 (format
1265 ;; On Opsware, pdksh (which is the true name of ksh there) doesn't
1266 ;; parse correctly the sequence "((". Therefore, we add a space.
1267 "( (%s %s || %s -h %s) && %s -c '((\"%%N\") %%h %s %s %%Xe0 %%Ye0 %%Ze0 %%se0 \"%%A\" t %%ie0 -1)' %s || echo nil)"
1268 (tramp-get-file-exists-command vec)
1269 (tramp-shell-quote-argument localname)
1270 (tramp-get-test-command vec)
1271 (tramp-shell-quote-argument localname)
1272 (tramp-get-remote-stat vec)
1273 (if (eq id-format 'integer) "%u" "\"%U\"")
1274 (if (eq id-format 'integer) "%g" "\"%G\"")
1275 (tramp-shell-quote-argument localname))))
1277 (defun tramp-sh-handle-set-visited-file-modtime (&optional time-list)
1278 "Like `set-visited-file-modtime' for Tramp files."
1279 (unless (buffer-file-name)
1280 (error "Can't set-visited-file-modtime: buffer `%s' not visiting a file"
1281 (buffer-name)))
1282 (if time-list
1283 (tramp-run-real-handler 'set-visited-file-modtime (list time-list))
1284 (let ((f (buffer-file-name))
1285 coding-system-used)
1286 (with-parsed-tramp-file-name f nil
1287 (let* ((attr (file-attributes f))
1288 ;; '(-1 65535) means file doesn't exists yet.
1289 (modtime (or (nth 5 attr) '(-1 65535))))
1290 (when (boundp 'last-coding-system-used)
1291 (setq coding-system-used (symbol-value 'last-coding-system-used)))
1292 ;; We use '(0 0) as a don't-know value. See also
1293 ;; `tramp-do-file-attributes-with-ls'.
1294 (if (not (equal modtime '(0 0)))
1295 (tramp-run-real-handler 'set-visited-file-modtime (list modtime))
1296 (progn
1297 (tramp-send-command
1299 (format "%s -ild %s"
1300 (tramp-get-ls-command v)
1301 (tramp-shell-quote-argument localname)))
1302 (setq attr (buffer-substring (point)
1303 (progn (end-of-line) (point)))))
1304 (tramp-set-file-property
1305 v localname "visited-file-modtime-ild" attr))
1306 (when (boundp 'last-coding-system-used)
1307 (set 'last-coding-system-used coding-system-used))
1308 nil)))))
1310 ;; This function makes the same assumption as
1311 ;; `tramp-sh-handle-set-visited-file-modtime'.
1312 (defun tramp-sh-handle-verify-visited-file-modtime (buf)
1313 "Like `verify-visited-file-modtime' for Tramp files.
1314 At the time `verify-visited-file-modtime' calls this function, we
1315 already know that the buffer is visiting a file and that
1316 `visited-file-modtime' does not return 0. Do not call this
1317 function directly, unless those two cases are already taken care
1318 of."
1319 (with-current-buffer buf
1320 (let ((f (buffer-file-name)))
1321 ;; There is no file visiting the buffer, or the buffer has no
1322 ;; recorded last modification time, or there is no established
1323 ;; connection.
1324 (if (or (not f)
1325 (eq (visited-file-modtime) 0)
1326 (not (tramp-file-name-handler 'file-remote-p f nil 'connected)))
1328 (with-parsed-tramp-file-name f nil
1329 (let* ((remote-file-name-inhibit-cache t)
1330 (attr (file-attributes f))
1331 (modtime (nth 5 attr))
1332 (mt (visited-file-modtime)))
1334 (cond
1335 ;; File exists, and has a known modtime.
1336 ((and attr (not (equal modtime '(0 0))))
1337 (< (abs (tramp-time-diff
1338 modtime
1339 ;; For compatibility, deal with both the old
1340 ;; (HIGH . LOW) and the new (HIGH LOW) return
1341 ;; values of `visited-file-modtime'.
1342 (if (atom (cdr mt))
1343 (list (car mt) (cdr mt))
1344 mt)))
1346 ;; Modtime has the don't know value.
1347 (attr
1348 (tramp-send-command
1350 (format "%s -ild %s"
1351 (tramp-get-ls-command v)
1352 (tramp-shell-quote-argument localname)))
1353 (with-current-buffer (tramp-get-buffer v)
1354 (setq attr (buffer-substring
1355 (point) (progn (end-of-line) (point)))))
1356 (equal
1357 attr
1358 (tramp-get-file-property
1359 v localname "visited-file-modtime-ild" "")))
1360 ;; If file does not exist, say it is not modified if and
1361 ;; only if that agrees with the buffer's record.
1362 (t (equal mt '(-1 65535))))))))))
1364 (defun tramp-sh-handle-set-file-modes (filename mode)
1365 "Like `set-file-modes' for Tramp files."
1366 (with-parsed-tramp-file-name filename nil
1367 (tramp-flush-file-property v localname)
1368 ;; FIXME: extract the proper text from chmod's stderr.
1369 (tramp-barf-unless-okay
1371 (format "chmod %s %s"
1372 (tramp-compat-decimal-to-octal mode)
1373 (tramp-shell-quote-argument localname))
1374 "Error while changing file's mode %s" filename)))
1376 (defun tramp-sh-handle-set-file-times (filename &optional time)
1377 "Like `set-file-times' for Tramp files."
1378 (if (file-remote-p filename)
1379 (with-parsed-tramp-file-name filename nil
1380 (tramp-flush-file-property v localname)
1381 (let ((time (if (or (null time) (equal time '(0 0)))
1382 (current-time)
1383 time))
1384 ;; With GNU Emacs, `format-time-string' has an optional
1385 ;; parameter UNIVERSAL. This is preferred, because we
1386 ;; could handle the case when the remote host is located
1387 ;; in a different time zone as the local host.
1388 (utc (not (featurep 'xemacs))))
1389 (tramp-send-command-and-check
1390 v (format "%s touch -t %s %s"
1391 (if utc "TZ=UTC; export TZ;" "")
1392 (if utc
1393 (format-time-string "%Y%m%d%H%M.%S" time t)
1394 (format-time-string "%Y%m%d%H%M.%S" time))
1395 (tramp-shell-quote-argument localname)))))
1397 ;; We handle also the local part, because in older Emacsen,
1398 ;; without `set-file-times', this function is an alias for this.
1399 ;; We are local, so we don't need the UTC settings.
1400 (zerop
1401 (tramp-compat-call-process
1402 "touch" nil nil nil "-t"
1403 (format-time-string "%Y%m%d%H%M.%S" time)
1404 (tramp-shell-quote-argument filename)))))
1406 (defun tramp-set-file-uid-gid (filename &optional uid gid)
1407 "Set the ownership for FILENAME.
1408 If UID and GID are provided, these values are used; otherwise uid
1409 and gid of the corresponding user is taken. Both parameters must be integers."
1410 ;; Modern Unices allow chown only for root. So we might need
1411 ;; another implementation, see `dired-do-chown'. OTOH, it is mostly
1412 ;; working with su(do)? when it is needed, so it shall succeed in
1413 ;; the majority of cases.
1414 ;; Don't modify `last-coding-system-used' by accident.
1415 (let ((last-coding-system-used last-coding-system-used))
1416 (if (file-remote-p filename)
1417 (with-parsed-tramp-file-name filename nil
1418 (if (and (zerop (user-uid)) (tramp-local-host-p v))
1419 ;; If we are root on the local host, we can do it directly.
1420 (tramp-set-file-uid-gid localname uid gid)
1421 (let ((uid (or (and (integerp uid) uid)
1422 (tramp-get-remote-uid v 'integer)))
1423 (gid (or (and (integerp gid) gid)
1424 (tramp-get-remote-gid v 'integer))))
1425 (tramp-send-command
1426 v (format
1427 "chown %d:%d %s" uid gid
1428 (tramp-shell-quote-argument localname))))))
1430 ;; We handle also the local part, because there doesn't exist
1431 ;; `set-file-uid-gid'. On W32 "chown" might not work.
1432 (let ((uid (or (and (integerp uid) uid) (tramp-get-local-uid 'integer)))
1433 (gid (or (and (integerp gid) gid) (tramp-get-local-gid 'integer))))
1434 (tramp-compat-call-process
1435 "chown" nil nil nil
1436 (format "%d:%d" uid gid) (tramp-shell-quote-argument filename))))))
1438 (defun tramp-remote-selinux-p (vec)
1439 "Check, whether SELINUX is enabled on the remote host."
1440 (with-connection-property (tramp-get-connection-process vec) "selinux-p"
1441 (let ((result (tramp-find-executable
1442 vec "getenforce" (tramp-get-remote-path vec) t t)))
1443 (and result
1444 (string-equal
1445 (tramp-send-command-and-read
1446 vec (format "echo \\\"`%S`\\\"" result))
1447 "Enforcing")))))
1449 (defun tramp-sh-handle-file-selinux-context (filename)
1450 "Like `file-selinux-context' for Tramp files."
1451 (with-parsed-tramp-file-name filename nil
1452 (with-file-property v localname "file-selinux-context"
1453 (let ((context '(nil nil nil nil))
1454 (regexp (concat "\\([a-z0-9_]+\\):" "\\([a-z0-9_]+\\):"
1455 "\\([a-z0-9_]+\\):" "\\([a-z0-9_]+\\)")))
1456 (when (and (tramp-remote-selinux-p v)
1457 (tramp-send-command-and-check
1458 v (format
1459 "%s -d -Z %s"
1460 (tramp-get-ls-command v)
1461 (tramp-shell-quote-argument localname))))
1462 (with-current-buffer (tramp-get-connection-buffer v)
1463 (goto-char (point-min))
1464 (when (re-search-forward regexp (point-at-eol) t)
1465 (setq context (list (match-string 1) (match-string 2)
1466 (match-string 3) (match-string 4))))))
1467 ;; Return the context.
1468 context))))
1470 (defun tramp-sh-handle-set-file-selinux-context (filename context)
1471 "Like `set-file-selinux-context' for Tramp files."
1472 (with-parsed-tramp-file-name filename nil
1473 (if (and (consp context)
1474 (tramp-remote-selinux-p v)
1475 (tramp-send-command-and-check
1476 v (format "chcon %s %s %s %s %s"
1477 (if (stringp (nth 0 context))
1478 (format "--user=%s" (nth 0 context)) "")
1479 (if (stringp (nth 1 context))
1480 (format "--role=%s" (nth 1 context)) "")
1481 (if (stringp (nth 2 context))
1482 (format "--type=%s" (nth 2 context)) "")
1483 (if (stringp (nth 3 context))
1484 (format "--range=%s" (nth 3 context)) "")
1485 (tramp-shell-quote-argument localname))))
1486 (tramp-set-file-property v localname "file-selinux-context" context)
1487 (tramp-set-file-property v localname "file-selinux-context" 'undef)))
1488 ;; We always return nil.
1489 nil)
1491 ;; Simple functions using the `test' command.
1493 (defun tramp-sh-handle-file-executable-p (filename)
1494 "Like `file-executable-p' for Tramp files."
1495 (with-parsed-tramp-file-name filename nil
1496 (with-file-property v localname "file-executable-p"
1497 ;; Examine `file-attributes' cache to see if request can be
1498 ;; satisfied without remote operation.
1499 (or (tramp-check-cached-permissions v ?x)
1500 (tramp-run-test "-x" filename)))))
1502 (defun tramp-sh-handle-file-readable-p (filename)
1503 "Like `file-readable-p' for Tramp files."
1504 (with-parsed-tramp-file-name filename nil
1505 (with-file-property v localname "file-readable-p"
1506 ;; Examine `file-attributes' cache to see if request can be
1507 ;; satisfied without remote operation.
1508 (or (tramp-check-cached-permissions v ?r)
1509 (tramp-run-test "-r" filename)))))
1511 ;; When the remote shell is started, it looks for a shell which groks
1512 ;; tilde expansion. Here, we assume that all shells which grok tilde
1513 ;; expansion will also provide a `test' command which groks `-nt' (for
1514 ;; newer than). If this breaks, tell me about it and I'll try to do
1515 ;; something smarter about it.
1516 (defun tramp-sh-handle-file-newer-than-file-p (file1 file2)
1517 "Like `file-newer-than-file-p' for Tramp files."
1518 (cond ((not (file-exists-p file1))
1519 nil)
1520 ((not (file-exists-p file2))
1522 ;; We are sure both files exist at this point.
1524 (save-excursion
1525 ;; We try to get the mtime of both files. If they are not
1526 ;; equal to the "dont-know" value, then we subtract the times
1527 ;; and obtain the result.
1528 (let ((fa1 (file-attributes file1))
1529 (fa2 (file-attributes file2)))
1530 (if (and (not (equal (nth 5 fa1) '(0 0)))
1531 (not (equal (nth 5 fa2) '(0 0))))
1532 (> 0 (tramp-time-diff (nth 5 fa2) (nth 5 fa1)))
1533 ;; If one of them is the dont-know value, then we can
1534 ;; still try to run a shell command on the remote host.
1535 ;; However, this only works if both files are Tramp
1536 ;; files and both have the same method, same user, same
1537 ;; host.
1538 (unless (tramp-equal-remote file1 file2)
1539 (with-parsed-tramp-file-name
1540 (if (tramp-tramp-file-p file1) file1 file2) nil
1541 (tramp-error
1542 v 'file-error
1543 "Files %s and %s must have same method, user, host"
1544 file1 file2)))
1545 (with-parsed-tramp-file-name file1 nil
1546 (tramp-run-test2
1547 (tramp-get-test-nt-command v) file1 file2))))))))
1549 ;; Functions implemented using the basic functions above.
1551 (defun tramp-sh-handle-file-directory-p (filename)
1552 "Like `file-directory-p' for Tramp files."
1553 ;; Care must be taken that this function returns `t' for symlinks
1554 ;; pointing to directories. Surely the most obvious implementation
1555 ;; would be `test -d', but that returns false for such symlinks.
1556 ;; CCC: Stefan Monnier says that `test -d' follows symlinks. And
1557 ;; I now think he's right. So we could be using `test -d', couldn't
1558 ;; we?
1560 ;; Alternatives: `cd %s', `test -d %s'
1561 (with-parsed-tramp-file-name filename nil
1562 (with-file-property v localname "file-directory-p"
1563 (tramp-run-test "-d" filename))))
1565 (defun tramp-sh-handle-file-writable-p (filename)
1566 "Like `file-writable-p' for Tramp files."
1567 (with-parsed-tramp-file-name filename nil
1568 (with-file-property v localname "file-writable-p"
1569 (if (file-exists-p filename)
1570 ;; Examine `file-attributes' cache to see if request can be
1571 ;; satisfied without remote operation.
1572 (or (tramp-check-cached-permissions v ?w)
1573 (tramp-run-test "-w" filename))
1574 ;; If file doesn't exist, check if directory is writable.
1575 (and (tramp-run-test "-d" (file-name-directory filename))
1576 (tramp-run-test "-w" (file-name-directory filename)))))))
1578 (defun tramp-sh-handle-file-ownership-preserved-p (filename)
1579 "Like `file-ownership-preserved-p' for Tramp files."
1580 (with-parsed-tramp-file-name filename nil
1581 (with-file-property v localname "file-ownership-preserved-p"
1582 (let ((attributes (file-attributes filename)))
1583 ;; Return t if the file doesn't exist, since it's true that no
1584 ;; information would be lost by an (attempted) delete and create.
1585 (or (null attributes)
1586 (= (nth 2 attributes) (tramp-get-remote-uid v 'integer)))))))
1588 ;; Directory listings.
1590 (defun tramp-sh-handle-directory-files-and-attributes
1591 (directory &optional full match nosort id-format)
1592 "Like `directory-files-and-attributes' for Tramp files."
1593 (unless id-format (setq id-format 'integer))
1594 (when (file-directory-p directory)
1595 (setq directory (expand-file-name directory))
1596 (let* ((temp
1597 (copy-tree
1598 (with-parsed-tramp-file-name directory nil
1599 (with-file-property
1600 v localname
1601 (format "directory-files-and-attributes-%s" id-format)
1602 (save-excursion
1603 (mapcar
1604 (lambda (x)
1605 (cons (car x)
1606 (tramp-convert-file-attributes v (cdr x))))
1607 (cond
1608 ((tramp-get-remote-stat v)
1609 (tramp-do-directory-files-and-attributes-with-stat
1610 v localname id-format))
1611 ((tramp-get-remote-perl v)
1612 (tramp-do-directory-files-and-attributes-with-perl
1613 v localname id-format)))))))))
1614 result item)
1616 (while temp
1617 (setq item (pop temp))
1618 (when (or (null match) (string-match match (car item)))
1619 (when full
1620 (setcar item (expand-file-name (car item) directory)))
1621 (push item result)))
1623 (if nosort
1624 result
1625 (sort result (lambda (x y) (string< (car x) (car y))))))))
1627 (defun tramp-do-directory-files-and-attributes-with-perl
1628 (vec localname &optional id-format)
1629 "Implement `directory-files-and-attributes' for Tramp files using a Perl script."
1630 (tramp-message vec 5 "directory-files-and-attributes with perl: %s" localname)
1631 (tramp-maybe-send-script
1632 vec tramp-perl-directory-files-and-attributes
1633 "tramp_perl_directory_files_and_attributes")
1634 (let ((object
1635 (tramp-send-command-and-read
1637 (format "tramp_perl_directory_files_and_attributes %s %s"
1638 (tramp-shell-quote-argument localname) id-format))))
1639 (when (stringp object) (tramp-error vec 'file-error object))
1640 object))
1642 (defun tramp-do-directory-files-and-attributes-with-stat
1643 (vec localname &optional id-format)
1644 "Implement `directory-files-and-attributes' for Tramp files using stat(1) command."
1645 (tramp-message vec 5 "directory-files-and-attributes with stat: %s" localname)
1646 (tramp-send-command-and-read
1648 (format
1649 (concat
1650 ;; We must care about filenames with spaces, or starting with
1651 ;; "-"; this would confuse xargs. "ls -aQ" might be a solution,
1652 ;; but it does not work on all remote systems. Therefore, we
1653 ;; quote the filenames via sed.
1654 "cd %s; echo \"(\"; (%s -a | sed -e s/\\$/\\\"/g -e s/^/\\\"/g | xargs "
1655 "%s -c '(\"%%n\" (\"%%N\") %%h %s %s %%Xe0 %%Ye0 %%Ze0 %%se0 \"%%A\" t %%ie0 -1)'); "
1656 "echo \")\"")
1657 (tramp-shell-quote-argument localname)
1658 (tramp-get-ls-command vec)
1659 (tramp-get-remote-stat vec)
1660 (if (eq id-format 'integer) "%u" "\"%U\"")
1661 (if (eq id-format 'integer) "%g" "\"%G\""))))
1663 ;; This function should return "foo/" for directories and "bar" for
1664 ;; files.
1665 (defun tramp-sh-handle-file-name-all-completions (filename directory)
1666 "Like `file-name-all-completions' for Tramp files."
1667 (unless (save-match-data (string-match "/" filename))
1668 (with-parsed-tramp-file-name (expand-file-name directory) nil
1670 (all-completions
1671 filename
1672 (mapcar
1673 'list
1675 ;; Try cache entries for filename, filename with last
1676 ;; character removed, filename with last two characters
1677 ;; removed, ..., and finally the empty string - all
1678 ;; concatenated to the local directory name.
1679 (let ((remote-file-name-inhibit-cache
1680 (or remote-file-name-inhibit-cache
1681 tramp-completion-reread-directory-timeout)))
1683 ;; This is inefficient for very long filenames, pity
1684 ;; `reduce' is not available...
1685 (car
1686 (apply
1687 'append
1688 (mapcar
1689 (lambda (x)
1690 (let ((cache-hit
1691 (tramp-get-file-property
1693 (concat localname (substring filename 0 x))
1694 "file-name-all-completions"
1695 nil)))
1696 (when cache-hit (list cache-hit))))
1697 (tramp-compat-number-sequence (length filename) 0 -1)))))
1699 ;; Cache expired or no matching cache entry found so we need
1700 ;; to perform a remote operation.
1701 (let (result)
1702 ;; Get a list of directories and files, including reliably
1703 ;; tagging the directories with a trailing '/'. Because I
1704 ;; rock. --daniel@danann.net
1706 ;; Changed to perform `cd' in the same remote op and only
1707 ;; get entries starting with `filename'. Capture any `cd'
1708 ;; error messages. Ensure any `cd' and `echo' aliases are
1709 ;; ignored.
1710 (tramp-send-command
1712 (if (tramp-get-remote-perl v)
1713 (progn
1714 (tramp-maybe-send-script
1715 v tramp-perl-file-name-all-completions
1716 "tramp_perl_file_name_all_completions")
1717 (format "tramp_perl_file_name_all_completions %s %s %d"
1718 (tramp-shell-quote-argument localname)
1719 (tramp-shell-quote-argument filename)
1720 (if (symbol-value
1721 ;; `read-file-name-completion-ignore-case'
1722 ;; is introduced with Emacs 22.1.
1723 (if (boundp
1724 'read-file-name-completion-ignore-case)
1725 'read-file-name-completion-ignore-case
1726 'completion-ignore-case))
1727 1 0)))
1729 (format (concat
1730 "(\\cd %s 2>&1 && (%s %s -a 2>/dev/null"
1731 ;; `ls' with wildcard might fail with `Argument
1732 ;; list too long' error in some corner cases; if
1733 ;; `ls' fails after `cd' succeeded, chances are
1734 ;; that's the case, so let's retry without
1735 ;; wildcard. This will return "too many" entries
1736 ;; but that isn't harmful.
1737 " || %s -a 2>/dev/null)"
1738 " | while read f; do"
1739 " if %s -d \"$f\" 2>/dev/null;"
1740 " then \\echo \"$f/\"; else \\echo \"$f\"; fi; done"
1741 " && \\echo ok) || \\echo fail")
1742 (tramp-shell-quote-argument localname)
1743 (tramp-get-ls-command v)
1744 ;; When `filename' is empty, just `ls' without
1745 ;; filename argument is more efficient than `ls *'
1746 ;; for very large directories and might avoid the
1747 ;; `Argument list too long' error.
1749 ;; With and only with wildcard, we need to add
1750 ;; `-d' to prevent `ls' from descending into
1751 ;; sub-directories.
1752 (if (zerop (length filename))
1754 (concat (tramp-shell-quote-argument filename) "* -d"))
1755 (tramp-get-ls-command v)
1756 (tramp-get-test-command v))))
1758 ;; Now grab the output.
1759 (with-current-buffer (tramp-get-buffer v)
1760 (goto-char (point-max))
1762 ;; Check result code, found in last line of output
1763 (forward-line -1)
1764 (if (looking-at "^fail$")
1765 (progn
1766 ;; Grab error message from line before last line
1767 ;; (it was put there by `cd 2>&1')
1768 (forward-line -1)
1769 (tramp-error
1770 v 'file-error
1771 "tramp-sh-handle-file-name-all-completions: %s"
1772 (buffer-substring (point) (point-at-eol))))
1773 ;; For peace of mind, if buffer doesn't end in `fail'
1774 ;; then it should end in `ok'. If neither are in the
1775 ;; buffer something went seriously wrong on the remote
1776 ;; side.
1777 (unless (looking-at "^ok$")
1778 (tramp-error
1779 v 'file-error
1781 tramp-sh-handle-file-name-all-completions: internal error accessing `%s': `%s'"
1782 (tramp-shell-quote-argument localname) (buffer-string))))
1784 (while (zerop (forward-line -1))
1785 (push (buffer-substring (point) (point-at-eol)) result)))
1787 ;; Because the remote op went through OK we know the
1788 ;; directory we `cd'-ed to exists
1789 (tramp-set-file-property
1790 v localname "file-exists-p" t)
1792 ;; Because the remote op went through OK we know every
1793 ;; file listed by `ls' exists.
1794 (mapc (lambda (entry)
1795 (tramp-set-file-property
1796 v (concat localname entry) "file-exists-p" t))
1797 result)
1799 ;; Store result in the cache
1800 (tramp-set-file-property
1801 v (concat localname filename)
1802 "file-name-all-completions"
1803 result))))))))
1805 ;; cp, mv and ln
1807 (defun tramp-sh-handle-add-name-to-file
1808 (filename newname &optional ok-if-already-exists)
1809 "Like `add-name-to-file' for Tramp files."
1810 (unless (tramp-equal-remote filename newname)
1811 (with-parsed-tramp-file-name
1812 (if (tramp-tramp-file-p filename) filename newname) nil
1813 (tramp-error
1814 v 'file-error
1815 "add-name-to-file: %s"
1816 "only implemented for same method, same user, same host")))
1817 (with-parsed-tramp-file-name filename v1
1818 (with-parsed-tramp-file-name newname v2
1819 (let ((ln (when v1 (tramp-get-remote-ln v1))))
1820 (when (and (not ok-if-already-exists)
1821 (file-exists-p newname)
1822 (not (numberp ok-if-already-exists))
1823 (y-or-n-p
1824 (format
1825 "File %s already exists; make it a new name anyway? "
1826 newname)))
1827 (tramp-error
1828 v2 'file-error
1829 "add-name-to-file: file %s already exists" newname))
1830 (tramp-flush-file-property v2 (file-name-directory v2-localname))
1831 (tramp-flush-file-property v2 v2-localname)
1832 (tramp-barf-unless-okay
1834 (format "%s %s %s" ln (tramp-shell-quote-argument v1-localname)
1835 (tramp-shell-quote-argument v2-localname))
1836 "error with add-name-to-file, see buffer `%s' for details"
1837 (buffer-name))))))
1839 (defun tramp-sh-handle-copy-file
1840 (filename newname &optional ok-if-already-exists keep-date
1841 preserve-uid-gid preserve-selinux-context)
1842 "Like `copy-file' for Tramp files."
1843 (setq filename (expand-file-name filename))
1844 (setq newname (expand-file-name newname))
1845 (cond
1846 ;; At least one file a Tramp file?
1847 ((or (tramp-tramp-file-p filename)
1848 (tramp-tramp-file-p newname))
1849 (tramp-do-copy-or-rename-file
1850 'copy filename newname ok-if-already-exists keep-date
1851 preserve-uid-gid preserve-selinux-context))
1852 ;; Compat section.
1853 (preserve-selinux-context
1854 (tramp-run-real-handler
1855 'copy-file
1856 (list filename newname ok-if-already-exists keep-date
1857 preserve-uid-gid preserve-selinux-context)))
1858 (preserve-uid-gid
1859 (tramp-run-real-handler
1860 'copy-file
1861 (list filename newname ok-if-already-exists keep-date preserve-uid-gid)))
1863 (tramp-run-real-handler
1864 'copy-file (list filename newname ok-if-already-exists keep-date)))))
1866 (defun tramp-sh-handle-copy-directory
1867 (dirname newname &optional keep-date parents)
1868 "Like `copy-directory' for Tramp files."
1869 (let ((t1 (tramp-tramp-file-p dirname))
1870 (t2 (tramp-tramp-file-p newname)))
1871 (with-parsed-tramp-file-name (if t1 dirname newname) nil
1872 (if (and (tramp-get-method-parameter method 'tramp-copy-recursive)
1873 ;; When DIRNAME and NEWNAME are remote, they must have
1874 ;; the same method.
1875 (or (null t1) (null t2)
1876 (string-equal
1877 (tramp-file-name-method (tramp-dissect-file-name dirname))
1878 (tramp-file-name-method (tramp-dissect-file-name newname)))))
1879 ;; scp or rsync DTRT.
1880 (progn
1881 (setq dirname (directory-file-name (expand-file-name dirname))
1882 newname (directory-file-name (expand-file-name newname)))
1883 (if (and (file-directory-p newname)
1884 (not (string-equal (file-name-nondirectory dirname)
1885 (file-name-nondirectory newname))))
1886 (setq newname
1887 (expand-file-name
1888 (file-name-nondirectory dirname) newname)))
1889 (if (not (file-directory-p (file-name-directory newname)))
1890 (make-directory (file-name-directory newname) parents))
1891 (tramp-do-copy-or-rename-file-out-of-band
1892 'copy dirname newname keep-date))
1893 ;; We must do it file-wise.
1894 (tramp-run-real-handler
1895 'copy-directory (list dirname newname keep-date parents)))
1897 ;; When newname did exist, we have wrong cached values.
1898 (when t2
1899 (with-parsed-tramp-file-name newname nil
1900 (tramp-flush-file-property v (file-name-directory localname))
1901 (tramp-flush-file-property v localname))))))
1903 (defun tramp-sh-handle-rename-file
1904 (filename newname &optional ok-if-already-exists)
1905 "Like `rename-file' for Tramp files."
1906 ;; Check if both files are local -- invoke normal rename-file.
1907 ;; Otherwise, use Tramp from local system.
1908 (setq filename (expand-file-name filename))
1909 (setq newname (expand-file-name newname))
1910 ;; At least one file a Tramp file?
1911 (if (or (tramp-tramp-file-p filename)
1912 (tramp-tramp-file-p newname))
1913 (tramp-do-copy-or-rename-file
1914 'rename filename newname ok-if-already-exists t t)
1915 (tramp-run-real-handler
1916 'rename-file (list filename newname ok-if-already-exists))))
1918 (defun tramp-do-copy-or-rename-file
1919 (op filename newname &optional ok-if-already-exists keep-date
1920 preserve-uid-gid preserve-selinux-context)
1921 "Copy or rename a remote file.
1922 OP must be `copy' or `rename' and indicates the operation to perform.
1923 FILENAME specifies the file to copy or rename, NEWNAME is the name of
1924 the new file (for copy) or the new name of the file (for rename).
1925 OK-IF-ALREADY-EXISTS means don't barf if NEWNAME exists already.
1926 KEEP-DATE means to make sure that NEWNAME has the same timestamp
1927 as FILENAME. PRESERVE-UID-GID, when non-nil, instructs to keep
1928 the uid and gid if both files are on the same host.
1929 PRESERVE-SELINUX-CONTEXT activates selinux commands.
1931 This function is invoked by `tramp-sh-handle-copy-file' and
1932 `tramp-sh-handle-rename-file'. It is an error if OP is neither
1933 of `copy' and `rename'. FILENAME and NEWNAME must be absolute
1934 file names."
1935 (unless (memq op '(copy rename))
1936 (error "Unknown operation `%s', must be `copy' or `rename'" op))
1937 (let ((t1 (tramp-tramp-file-p filename))
1938 (t2 (tramp-tramp-file-p newname))
1939 (context (and preserve-selinux-context
1940 (apply 'file-selinux-context (list filename))))
1941 pr tm)
1943 (with-parsed-tramp-file-name (if t1 filename newname) nil
1944 (when (and (not ok-if-already-exists) (file-exists-p newname))
1945 (tramp-error
1946 v 'file-already-exists "File %s already exists" newname))
1948 (with-progress-reporter
1949 v 0 (format "%s %s to %s"
1950 (if (eq op 'copy) "Copying" "Renaming")
1951 filename newname)
1953 (cond
1954 ;; Both are Tramp files.
1955 ((and t1 t2)
1956 (with-parsed-tramp-file-name filename v1
1957 (with-parsed-tramp-file-name newname v2
1958 (cond
1959 ;; Shortcut: if method, host, user are the same for
1960 ;; both files, we invoke `cp' or `mv' on the remote
1961 ;; host directly.
1962 ((tramp-equal-remote filename newname)
1963 (tramp-do-copy-or-rename-file-directly
1964 op filename newname
1965 ok-if-already-exists keep-date preserve-uid-gid))
1967 ;; Try out-of-band operation.
1968 ((tramp-method-out-of-band-p
1969 v1 (nth 7 (file-attributes (file-truename filename))))
1970 (tramp-do-copy-or-rename-file-out-of-band
1971 op filename newname keep-date))
1973 ;; No shortcut was possible. So we copy the file
1974 ;; first. If the operation was `rename', we go back
1975 ;; and delete the original file (if the copy was
1976 ;; successful). The approach is simple-minded: we
1977 ;; create a new buffer, insert the contents of the
1978 ;; source file into it, then write out the buffer to
1979 ;; the target file. The advantage is that it doesn't
1980 ;; matter which filename handlers are used for the
1981 ;; source and target file.
1983 (tramp-do-copy-or-rename-file-via-buffer
1984 op filename newname keep-date))))))
1986 ;; One file is a Tramp file, the other one is local.
1987 ((or t1 t2)
1988 (cond
1989 ;; Fast track on local machine.
1990 ((tramp-local-host-p v)
1991 (tramp-do-copy-or-rename-file-directly
1992 op filename newname
1993 ok-if-already-exists keep-date preserve-uid-gid))
1995 ;; If the Tramp file has an out-of-band method, the
1996 ;; corresponding copy-program can be invoked.
1997 ((tramp-method-out-of-band-p
1998 v (nth 7 (file-attributes (file-truename filename))))
1999 (tramp-do-copy-or-rename-file-out-of-band
2000 op filename newname keep-date))
2002 ;; Use the inline method via a Tramp buffer.
2003 (t (tramp-do-copy-or-rename-file-via-buffer
2004 op filename newname keep-date))))
2007 ;; One of them must be a Tramp file.
2008 (error "Tramp implementation says this cannot happen")))
2010 ;; Handle `preserve-selinux-context'.
2011 (when context (apply 'set-file-selinux-context (list newname context)))
2013 ;; In case of `rename', we must flush the cache of the source file.
2014 (when (and t1 (eq op 'rename))
2015 (with-parsed-tramp-file-name filename v1
2016 (tramp-flush-file-property v1 (file-name-directory localname))
2017 (tramp-flush-file-property v1 localname)))
2019 ;; When newname did exist, we have wrong cached values.
2020 (when t2
2021 (with-parsed-tramp-file-name newname v2
2022 (tramp-flush-file-property v2 (file-name-directory localname))
2023 (tramp-flush-file-property v2 localname)))))))
2025 (defun tramp-do-copy-or-rename-file-via-buffer (op filename newname keep-date)
2026 "Use an Emacs buffer to copy or rename a file.
2027 First arg OP is either `copy' or `rename' and indicates the operation.
2028 FILENAME is the source file, NEWNAME the target file.
2029 KEEP-DATE is non-nil if NEWNAME should have the same timestamp as FILENAME."
2030 (with-temp-buffer
2031 ;; We must disable multibyte, because binary data shall not be
2032 ;; converted.
2033 (set-buffer-multibyte nil)
2034 (let ((coding-system-for-read 'binary)
2035 (jka-compr-inhibit t))
2036 (insert-file-contents-literally filename))
2037 ;; We don't want the target file to be compressed, so we let-bind
2038 ;; `jka-compr-inhibit' to t.
2039 (let ((coding-system-for-write 'binary)
2040 (jka-compr-inhibit t))
2041 (write-region (point-min) (point-max) newname)))
2042 ;; KEEP-DATE handling.
2043 (when keep-date (set-file-times newname (nth 5 (file-attributes filename))))
2044 ;; Set the mode.
2045 (set-file-modes newname (tramp-default-file-modes filename))
2046 ;; If the operation was `rename', delete the original file.
2047 (unless (eq op 'copy) (delete-file filename)))
2049 (defun tramp-do-copy-or-rename-file-directly
2050 (op filename newname ok-if-already-exists keep-date preserve-uid-gid)
2051 "Invokes `cp' or `mv' on the remote system.
2052 OP must be one of `copy' or `rename', indicating `cp' or `mv',
2053 respectively. FILENAME specifies the file to copy or rename,
2054 NEWNAME is the name of the new file (for copy) or the new name of
2055 the file (for rename). Both files must reside on the same host.
2056 KEEP-DATE means to make sure that NEWNAME has the same timestamp
2057 as FILENAME. PRESERVE-UID-GID, when non-nil, instructs to keep
2058 the uid and gid from FILENAME."
2059 (let ((t1 (tramp-tramp-file-p filename))
2060 (t2 (tramp-tramp-file-p newname))
2061 (file-times (nth 5 (file-attributes filename)))
2062 (file-modes (tramp-default-file-modes filename)))
2063 (with-parsed-tramp-file-name (if t1 filename newname) nil
2064 (let* ((cmd (cond ((and (eq op 'copy) preserve-uid-gid) "cp -f -p")
2065 ((eq op 'copy) "cp -f")
2066 ((eq op 'rename) "mv -f")
2067 (t (tramp-error
2068 v 'file-error
2069 "Unknown operation `%s', must be `copy' or `rename'"
2070 op))))
2071 (localname1
2072 (if t1
2073 (tramp-file-name-handler 'file-remote-p filename 'localname)
2074 filename))
2075 (localname2
2076 (if t2
2077 (tramp-file-name-handler 'file-remote-p newname 'localname)
2078 newname))
2079 (prefix (file-remote-p (if t1 filename newname)))
2080 cmd-result)
2082 (cond
2083 ;; Both files are on a remote host, with same user.
2084 ((and t1 t2)
2085 (setq cmd-result
2086 (tramp-send-command-and-check
2087 v (format "%s %s %s" cmd
2088 (tramp-shell-quote-argument localname1)
2089 (tramp-shell-quote-argument localname2))))
2090 (with-current-buffer (tramp-get-buffer v)
2091 (goto-char (point-min))
2092 (unless
2094 (and keep-date
2095 ;; Mask cp -f error.
2096 (re-search-forward
2097 tramp-operation-not-permitted-regexp nil t))
2098 cmd-result)
2099 (tramp-error-with-buffer
2100 nil v 'file-error
2101 "Copying directly failed, see buffer `%s' for details."
2102 (buffer-name)))))
2104 ;; We are on the local host.
2105 ((or t1 t2)
2106 (cond
2107 ;; We can do it directly.
2108 ((let (file-name-handler-alist)
2109 (and (file-readable-p localname1)
2110 (file-writable-p (file-name-directory localname2))
2111 (or (file-directory-p localname2)
2112 (file-writable-p localname2))))
2113 (if (eq op 'copy)
2114 (tramp-compat-copy-file
2115 localname1 localname2 ok-if-already-exists
2116 keep-date preserve-uid-gid)
2117 (tramp-run-real-handler
2118 'rename-file (list localname1 localname2 ok-if-already-exists))))
2120 ;; We can do it directly with `tramp-send-command'
2121 ((and (file-readable-p (concat prefix localname1))
2122 (file-writable-p
2123 (file-name-directory (concat prefix localname2)))
2124 (or (file-directory-p (concat prefix localname2))
2125 (file-writable-p (concat prefix localname2))))
2126 (tramp-do-copy-or-rename-file-directly
2127 op (concat prefix localname1) (concat prefix localname2)
2128 ok-if-already-exists keep-date t)
2129 ;; We must change the ownership to the local user.
2130 (tramp-set-file-uid-gid
2131 (concat prefix localname2)
2132 (tramp-get-local-uid 'integer)
2133 (tramp-get-local-gid 'integer)))
2135 ;; We need a temporary file in between.
2137 ;; Create the temporary file.
2138 (let ((tmpfile (tramp-compat-make-temp-file localname1)))
2139 (unwind-protect
2140 (progn
2141 (cond
2143 (tramp-barf-unless-okay
2144 v (format
2145 "%s %s %s" cmd
2146 (tramp-shell-quote-argument localname1)
2147 (tramp-shell-quote-argument tmpfile))
2148 "Copying directly failed, see buffer `%s' for details."
2149 (tramp-get-buffer v))
2150 ;; We must change the ownership as remote user.
2151 ;; Since this does not work reliable, we also
2152 ;; give read permissions.
2153 (set-file-modes
2154 (concat prefix tmpfile)
2155 (tramp-compat-octal-to-decimal "0777"))
2156 (tramp-set-file-uid-gid
2157 (concat prefix tmpfile)
2158 (tramp-get-local-uid 'integer)
2159 (tramp-get-local-gid 'integer)))
2161 (if (eq op 'copy)
2162 (tramp-compat-copy-file
2163 localname1 tmpfile t
2164 keep-date preserve-uid-gid)
2165 (tramp-run-real-handler
2166 'rename-file
2167 (list localname1 tmpfile t)))
2168 ;; We must change the ownership as local user.
2169 ;; Since this does not work reliable, we also
2170 ;; give read permissions.
2171 (set-file-modes
2172 tmpfile (tramp-compat-octal-to-decimal "0777"))
2173 (tramp-set-file-uid-gid
2174 tmpfile
2175 (tramp-get-remote-uid v 'integer)
2176 (tramp-get-remote-gid v 'integer))))
2178 ;; Move the temporary file to its destination.
2179 (cond
2181 (tramp-barf-unless-okay
2182 v (format
2183 "cp -f -p %s %s"
2184 (tramp-shell-quote-argument tmpfile)
2185 (tramp-shell-quote-argument localname2))
2186 "Copying directly failed, see buffer `%s' for details."
2187 (tramp-get-buffer v)))
2189 (tramp-run-real-handler
2190 'rename-file
2191 (list tmpfile localname2 ok-if-already-exists)))))
2193 ;; Save exit.
2194 (ignore-errors (delete-file tmpfile)))))))))
2196 ;; Set the time and mode. Mask possible errors.
2197 (ignore-errors
2198 (when keep-date
2199 (set-file-times newname file-times)
2200 (set-file-modes newname file-modes))))))
2202 (defun tramp-do-copy-or-rename-file-out-of-band (op filename newname keep-date)
2203 "Invoke rcp program to copy.
2204 The method used must be an out-of-band method."
2205 (let* ((t1 (tramp-tramp-file-p filename))
2206 (t2 (tramp-tramp-file-p newname))
2207 (orig-vec (tramp-dissect-file-name (if t1 filename newname)))
2208 copy-program copy-args copy-env copy-keep-date port spec
2209 source target)
2211 (with-parsed-tramp-file-name (if t1 filename newname) nil
2212 (if (and t1 t2)
2214 ;; Both are Tramp files. We shall optimize it when the
2215 ;; methods for filename and newname are the same.
2216 (let* ((dir-flag (file-directory-p filename))
2217 (tmpfile (tramp-compat-make-temp-file localname dir-flag)))
2218 (if dir-flag
2219 (setq tmpfile
2220 (expand-file-name
2221 (file-name-nondirectory newname) tmpfile)))
2222 (unwind-protect
2223 (progn
2224 (tramp-do-copy-or-rename-file-out-of-band
2225 op filename tmpfile keep-date)
2226 (tramp-do-copy-or-rename-file-out-of-band
2227 'rename tmpfile newname keep-date))
2228 ;; Save exit.
2229 (ignore-errors
2230 (if dir-flag
2231 (tramp-compat-delete-directory
2232 (expand-file-name ".." tmpfile) 'recursive)
2233 (delete-file tmpfile)))))
2235 ;; Set variables for computing the prompt for reading
2236 ;; password.
2237 (setq tramp-current-method (tramp-file-name-method v)
2238 tramp-current-user (tramp-file-name-user v)
2239 tramp-current-host (tramp-file-name-host v))
2241 ;; Expand hops. Might be necessary for gateway methods.
2242 (setq v (car (tramp-compute-multi-hops v)))
2243 (aset v 3 localname)
2245 ;; Check which ones of source and target are Tramp files.
2246 (setq source (if t1 (tramp-make-copy-program-file-name v) filename)
2247 target (funcall
2248 (if (and (file-directory-p filename)
2249 (string-equal
2250 (file-name-nondirectory filename)
2251 (file-name-nondirectory newname)))
2252 'file-name-directory
2253 'identity)
2254 (if t2 (tramp-make-copy-program-file-name v) newname)))
2256 ;; Check for host and port number. We cannot use
2257 ;; `tramp-file-name-port', because this returns also
2258 ;; `tramp-default-port', which might clash with settings in
2259 ;; "~/.ssh/config".
2260 (setq host (tramp-file-name-host v)
2261 port "")
2262 (when (string-match tramp-host-with-port-regexp host)
2263 (setq host (string-to-number (match-string 1 host))
2264 port (string-to-number (match-string 2 host))))
2266 ;; Compose copy command.
2267 (setq spec (format-spec-make
2268 ?h host ?u user ?p port
2269 ?t (tramp-get-connection-property
2270 (tramp-get-connection-process v) "temp-file" "")
2271 ?k (if keep-date " " ""))
2272 copy-program (tramp-get-method-parameter
2273 method 'tramp-copy-program)
2274 copy-keep-date (tramp-get-method-parameter
2275 method 'tramp-copy-keep-date)
2276 copy-args
2277 (delete
2278 ;; " " has either been a replacement of "%k" (when
2279 ;; keep-date argument is non-nil), or a replacement
2280 ;; for the whole keep-date sublist.
2282 (dolist
2284 (tramp-get-method-parameter method 'tramp-copy-args)
2285 copy-args)
2286 (setq copy-args
2287 (append
2288 copy-args
2289 (let ((y (mapcar (lambda (z) (format-spec z spec)) x)))
2290 (if (member "" y) '(" ") y))))))
2291 copy-env
2292 (delq
2294 (mapcar
2295 (lambda (x)
2296 (setq x (mapcar (lambda (y) (format-spec y spec)) x))
2297 (unless (member "" x) (mapconcat 'identity x " ")))
2298 (tramp-get-method-parameter method 'tramp-copy-env))))
2300 ;; Check for program.
2301 (unless (let ((default-directory
2302 (tramp-compat-temporary-file-directory)))
2303 (executable-find copy-program))
2304 (tramp-error
2305 v 'file-error "Cannot find copy program: %s" copy-program))
2307 (with-temp-buffer
2308 (unwind-protect
2309 ;; The default directory must be remote.
2310 (let ((default-directory
2311 (file-name-directory (if t1 filename newname)))
2312 (process-environment (copy-sequence process-environment)))
2313 ;; Set the transfer process properties.
2314 (tramp-set-connection-property
2315 v "process-name" (buffer-name (current-buffer)))
2316 (tramp-set-connection-property
2317 v "process-buffer" (current-buffer))
2318 (while copy-env
2319 (tramp-message
2320 orig-vec 5 "%s=\"%s\"" (car copy-env) (cadr copy-env))
2321 (setenv (pop copy-env) (pop copy-env)))
2323 ;; Use an asynchronous process. By this, password can
2324 ;; be handled. The default directory must be local, in
2325 ;; order to apply the correct `copy-program'. We don't
2326 ;; set a timeout, because the copying of large files can
2327 ;; last longer than 60 secs.
2328 (let ((p (let ((default-directory
2329 (tramp-compat-temporary-file-directory)))
2330 (apply 'start-process
2331 (tramp-get-connection-name v)
2332 (tramp-get-connection-buffer v)
2333 copy-program
2334 (append copy-args (list source target))))))
2335 (tramp-message
2336 orig-vec 6 "%s"
2337 (mapconcat 'identity (process-command p) " "))
2338 (tramp-compat-set-process-query-on-exit-flag p nil)
2339 (tramp-process-actions
2340 p v nil tramp-actions-copy-out-of-band)))
2342 ;; Reset the transfer process properties.
2343 (tramp-message orig-vec 6 "%s" (buffer-string))
2344 (tramp-set-connection-property v "process-name" nil)
2345 (tramp-set-connection-property v "process-buffer" nil)))
2347 ;; Handle KEEP-DATE argument.
2348 (when (and keep-date (not copy-keep-date))
2349 (set-file-times newname (nth 5 (file-attributes filename))))
2351 ;; Set the mode.
2352 (unless (and keep-date copy-keep-date)
2353 (ignore-errors
2354 (set-file-modes newname (tramp-default-file-modes filename)))))
2356 ;; If the operation was `rename', delete the original file.
2357 (unless (eq op 'copy)
2358 (if (file-regular-p filename)
2359 (delete-file filename)
2360 (tramp-compat-delete-directory filename 'recursive))))))
2362 (defun tramp-sh-handle-make-directory (dir &optional parents)
2363 "Like `make-directory' for Tramp files."
2364 (setq dir (expand-file-name dir))
2365 (with-parsed-tramp-file-name dir nil
2366 (tramp-flush-directory-property v (file-name-directory localname))
2367 (save-excursion
2368 (tramp-barf-unless-okay
2369 v (format "%s %s"
2370 (if parents "mkdir -p" "mkdir")
2371 (tramp-shell-quote-argument localname))
2372 "Couldn't make directory %s" dir))))
2374 (defun tramp-sh-handle-delete-directory (directory &optional recursive)
2375 "Like `delete-directory' for Tramp files."
2376 (setq directory (expand-file-name directory))
2377 (with-parsed-tramp-file-name directory nil
2378 (tramp-flush-file-property v (file-name-directory localname))
2379 (tramp-flush-directory-property v localname)
2380 (tramp-barf-unless-okay
2381 v (format "%s %s"
2382 (if recursive "rm -rf" "rmdir")
2383 (tramp-shell-quote-argument localname))
2384 "Couldn't delete %s" directory)))
2386 (defun tramp-sh-handle-delete-file (filename &optional trash)
2387 "Like `delete-file' for Tramp files."
2388 (setq filename (expand-file-name filename))
2389 (with-parsed-tramp-file-name filename nil
2390 (tramp-flush-file-property v (file-name-directory localname))
2391 (tramp-flush-file-property v localname)
2392 (tramp-barf-unless-okay
2393 v (format "%s %s"
2394 (or (and trash (tramp-get-remote-trash v)) "rm -f")
2395 (tramp-shell-quote-argument localname))
2396 "Couldn't delete %s" filename)))
2398 ;; Dired.
2400 ;; CCC: This does not seem to be enough. Something dies when
2401 ;; we try and delete two directories under Tramp :/
2402 (defun tramp-sh-handle-dired-recursive-delete-directory (filename)
2403 "Recursively delete the directory given.
2404 This is like `dired-recursive-delete-directory' for Tramp files."
2405 (with-parsed-tramp-file-name filename nil
2406 ;; Run a shell command 'rm -r <localname>'
2407 ;; Code shamelessly stolen from the dired implementation and, um, hacked :)
2408 (unless (file-exists-p filename)
2409 (tramp-error v 'file-error "No such directory: %s" filename))
2410 ;; Which is better, -r or -R? (-r works for me <daniel@danann.net>)
2411 (tramp-send-command
2413 (format "rm -rf %s" (tramp-shell-quote-argument localname))
2414 ;; Don't read the output, do it explicitly.
2415 nil t)
2416 ;; Wait for the remote system to return to us...
2417 ;; This might take a while, allow it plenty of time.
2418 (tramp-wait-for-output (tramp-get-connection-process v) 120)
2419 ;; Make sure that it worked...
2420 (tramp-flush-file-property v (file-name-directory localname))
2421 (tramp-flush-directory-property v localname)
2422 (and (file-exists-p filename)
2423 (tramp-error
2424 v 'file-error "Failed to recursively delete %s" filename))))
2426 (defun tramp-sh-handle-dired-compress-file (file &rest ok-flag)
2427 "Like `dired-compress-file' for Tramp files."
2428 ;; OK-FLAG is valid for XEmacs only, but not implemented.
2429 ;; Code stolen mainly from dired-aux.el.
2430 (with-parsed-tramp-file-name file nil
2431 (tramp-flush-file-property v localname)
2432 (save-excursion
2433 (let ((suffixes
2434 (if (not (featurep 'xemacs))
2435 ;; Emacs case
2436 (symbol-value 'dired-compress-file-suffixes)
2437 ;; XEmacs has `dired-compression-method-alist', which is
2438 ;; transformed into `dired-compress-file-suffixes' structure.
2439 (mapcar
2440 (lambda (x)
2441 (list (concat (regexp-quote (nth 1 x)) "\\'")
2443 (mapconcat 'identity (nth 3 x) " ")))
2444 (symbol-value 'dired-compression-method-alist))))
2445 suffix)
2446 ;; See if any suffix rule matches this file name.
2447 (while suffixes
2448 (let (case-fold-search)
2449 (if (string-match (car (car suffixes)) localname)
2450 (setq suffix (car suffixes) suffixes nil))
2451 (setq suffixes (cdr suffixes))))
2453 (cond ((file-symlink-p file)
2454 nil)
2455 ((and suffix (nth 2 suffix))
2456 ;; We found an uncompression rule.
2457 (with-progress-reporter v 0 (format "Uncompressing %s" file)
2458 (when (tramp-send-command-and-check
2459 v (concat (nth 2 suffix) " "
2460 (tramp-shell-quote-argument localname)))
2461 ;; `dired-remove-file' is not defined in XEmacs.
2462 (tramp-compat-funcall 'dired-remove-file file)
2463 (string-match (car suffix) file)
2464 (concat (substring file 0 (match-beginning 0))))))
2466 ;; We don't recognize the file as compressed, so compress it.
2467 ;; Try gzip.
2468 (with-progress-reporter v 0 (format "Compressing %s" file)
2469 (when (tramp-send-command-and-check
2470 v (concat "gzip -f "
2471 (tramp-shell-quote-argument localname)))
2472 ;; `dired-remove-file' is not defined in XEmacs.
2473 (tramp-compat-funcall 'dired-remove-file file)
2474 (cond ((file-exists-p (concat file ".gz"))
2475 (concat file ".gz"))
2476 ((file-exists-p (concat file ".z"))
2477 (concat file ".z"))
2478 (t nil))))))))))
2480 (defun tramp-sh-handle-insert-directory
2481 (filename switches &optional wildcard full-directory-p)
2482 "Like `insert-directory' for Tramp files."
2483 (setq filename (expand-file-name filename))
2484 (with-parsed-tramp-file-name filename nil
2485 (if (and (featurep 'ls-lisp)
2486 (not (symbol-value 'ls-lisp-use-insert-directory-program)))
2487 (tramp-run-real-handler
2488 'insert-directory (list filename switches wildcard full-directory-p))
2489 (when (stringp switches)
2490 (setq switches (split-string switches)))
2491 (when (and (member "--dired" switches)
2492 (not (tramp-get-ls-command-with-dired v)))
2493 (setq switches (delete "--dired" switches)))
2494 (when wildcard
2495 (setq wildcard (tramp-run-real-handler
2496 'file-name-nondirectory (list localname)))
2497 (setq localname (tramp-run-real-handler
2498 'file-name-directory (list localname))))
2499 (unless full-directory-p
2500 (setq switches (add-to-list 'switches "-d" 'append)))
2501 (setq switches (mapconcat 'tramp-shell-quote-argument switches " "))
2502 (when wildcard
2503 (setq switches (concat switches " " wildcard)))
2504 (tramp-message
2505 v 4 "Inserting directory `ls %s %s', wildcard %s, fulldir %s"
2506 switches filename (if wildcard "yes" "no")
2507 (if full-directory-p "yes" "no"))
2508 ;; If `full-directory-p', we just say `ls -l FILENAME'.
2509 ;; Else we chdir to the parent directory, then say `ls -ld BASENAME'.
2510 (if full-directory-p
2511 (tramp-send-command
2513 (format "%s %s %s 2>/dev/null"
2514 (tramp-get-ls-command v)
2515 switches
2516 (if wildcard
2517 localname
2518 (tramp-shell-quote-argument (concat localname ".")))))
2519 (tramp-barf-unless-okay
2521 (format "cd %s" (tramp-shell-quote-argument
2522 (tramp-run-real-handler
2523 'file-name-directory (list localname))))
2524 "Couldn't `cd %s'"
2525 (tramp-shell-quote-argument
2526 (tramp-run-real-handler 'file-name-directory (list localname))))
2527 (tramp-send-command
2529 (format "%s %s %s"
2530 (tramp-get-ls-command v)
2531 switches
2532 (if (or wildcard
2533 (zerop (length
2534 (tramp-run-real-handler
2535 'file-name-nondirectory (list localname)))))
2537 (tramp-shell-quote-argument
2538 (tramp-run-real-handler
2539 'file-name-nondirectory (list localname)))))))
2540 (let ((beg (point)))
2541 ;; We cannot use `insert-buffer-substring' because the Tramp
2542 ;; buffer changes its contents before insertion due to calling
2543 ;; `expand-file' and alike.
2544 (insert
2545 (with-current-buffer (tramp-get-buffer v)
2546 (buffer-string)))
2548 ;; Check for "--dired" output.
2549 (forward-line -2)
2550 (when (looking-at "//SUBDIRED//")
2551 (forward-line -1))
2552 (when (looking-at "//DIRED//\\s-+")
2553 (let ((databeg (match-end 0))
2554 (end (point-at-eol)))
2555 ;; Now read the numeric positions of file names.
2556 (goto-char databeg)
2557 (while (< (point) end)
2558 (let ((start (+ beg (read (current-buffer))))
2559 (end (+ beg (read (current-buffer)))))
2560 (if (memq (char-after end) '(?\n ?\ ))
2561 ;; End is followed by \n or by " -> ".
2562 (put-text-property start end 'dired-filename t))))))
2563 ;; Remove trailing lines.
2564 (goto-char (point-at-bol))
2565 (while (looking-at "//")
2566 (forward-line 1)
2567 (delete-region (match-beginning 0) (point)))
2569 ;; The inserted file could be from somewhere else.
2570 (when (and (not wildcard) (not full-directory-p))
2571 (goto-char (point-max))
2572 (when (file-symlink-p filename)
2573 (goto-char (search-backward "->" beg 'noerror)))
2574 (search-backward
2575 (if (zerop (length (file-name-nondirectory filename)))
2577 (file-name-nondirectory filename))
2578 beg 'noerror)
2579 (replace-match (file-relative-name filename) t))
2581 (goto-char (point-max))))))
2583 ;; Canonicalization of file names.
2585 (defun tramp-sh-handle-expand-file-name (name &optional dir)
2586 "Like `expand-file-name' for Tramp files.
2587 If the localname part of the given filename starts with \"/../\" then
2588 the result will be a local, non-Tramp, filename."
2589 ;; If DIR is not given, use DEFAULT-DIRECTORY or "/".
2590 (setq dir (or dir default-directory "/"))
2591 ;; Unless NAME is absolute, concat DIR and NAME.
2592 (unless (file-name-absolute-p name)
2593 (setq name (concat (file-name-as-directory dir) name)))
2594 ;; If NAME is not a Tramp file, run the real handler.
2595 (if (not (tramp-connectable-p name))
2596 (tramp-run-real-handler 'expand-file-name (list name nil))
2597 ;; Dissect NAME.
2598 (with-parsed-tramp-file-name name nil
2599 (unless (tramp-run-real-handler 'file-name-absolute-p (list localname))
2600 (setq localname (concat "~/" localname)))
2601 ;; Tilde expansion if necessary. This needs a shell which
2602 ;; groks tilde expansion! The function `tramp-find-shell' is
2603 ;; supposed to find such a shell on the remote host. Please
2604 ;; tell me about it when this doesn't work on your system.
2605 (when (string-match "\\`\\(~[^/]*\\)\\(.*\\)\\'" localname)
2606 (let ((uname (match-string 1 localname))
2607 (fname (match-string 2 localname)))
2608 ;; We cannot simply apply "~/", because under sudo "~/" is
2609 ;; expanded to the local user home directory but to the
2610 ;; root home directory. On the other hand, using always
2611 ;; the default user name for tilde expansion is not
2612 ;; appropriate either, because ssh and companions might
2613 ;; use a user name from the config file.
2614 (when (and (string-equal uname "~")
2615 (string-match "\\`su\\(do\\)?\\'" method))
2616 (setq uname (concat uname user)))
2617 (setq uname
2618 (with-connection-property v uname
2619 (tramp-send-command
2620 v (format "cd %s; pwd" (tramp-shell-quote-argument uname)))
2621 (with-current-buffer (tramp-get-buffer v)
2622 (goto-char (point-min))
2623 (buffer-substring (point) (point-at-eol)))))
2624 (setq localname (concat uname fname))))
2625 ;; There might be a double slash, for example when "~/"
2626 ;; expands to "/". Remove this.
2627 (while (string-match "//" localname)
2628 (setq localname (replace-match "/" t t localname)))
2629 ;; No tilde characters in file name, do normal
2630 ;; `expand-file-name' (this does "/./" and "/../"). We bind
2631 ;; `directory-sep-char' here for XEmacs on Windows, which would
2632 ;; otherwise use backslash. `default-directory' is bound,
2633 ;; because on Windows there would be problems with UNC shares or
2634 ;; Cygwin mounts.
2635 (let ((directory-sep-char ?/)
2636 (default-directory (tramp-compat-temporary-file-directory)))
2637 (tramp-make-tramp-file-name
2638 method user host
2639 (tramp-drop-volume-letter
2640 (tramp-run-real-handler
2641 'expand-file-name (list localname))))))))
2643 ;;; Remote commands:
2645 (defun tramp-sh-handle-executable-find (command)
2646 "Like `executable-find' for Tramp files."
2647 (with-parsed-tramp-file-name default-directory nil
2648 (tramp-find-executable v command (tramp-get-remote-path v) t)))
2650 (defun tramp-process-sentinel (proc event)
2651 "Flush file caches."
2652 (unless (memq (process-status proc) '(run open))
2653 (let ((vec (tramp-get-connection-property proc "vector" nil)))
2654 (when vec
2655 (tramp-message vec 5 "Sentinel called: `%s' `%s'" proc event)
2656 (tramp-flush-directory-property vec "")))))
2658 ;; We use BUFFER also as connection buffer during setup. Because of
2659 ;; this, its original contents must be saved, and restored once
2660 ;; connection has been setup.
2661 (defun tramp-sh-handle-start-file-process (name buffer program &rest args)
2662 "Like `start-file-process' for Tramp files."
2663 (with-parsed-tramp-file-name default-directory nil
2664 ;; When PROGRAM is nil, we just provide a tty.
2665 (let ((command
2666 (when (stringp program)
2667 (format "cd %s; exec %s"
2668 (tramp-shell-quote-argument localname)
2669 (mapconcat 'tramp-shell-quote-argument
2670 (cons program args) " "))))
2671 (tramp-process-connection-type
2672 (or (null program) tramp-process-connection-type))
2673 (bmp (and (buffer-live-p buffer) (buffer-modified-p buffer)))
2674 (name1 name)
2675 (i 0))
2676 (unwind-protect
2677 (save-excursion
2678 (save-restriction
2679 (unless buffer
2680 ;; BUFFER can be nil. We use a temporary buffer.
2681 (setq buffer (generate-new-buffer tramp-temp-buffer-name)))
2682 (while (get-process name1)
2683 ;; NAME must be unique as process name.
2684 (setq i (1+ i)
2685 name1 (format "%s<%d>" name i)))
2686 (setq name name1)
2687 ;; Set the new process properties.
2688 (tramp-set-connection-property v "process-name" name)
2689 (tramp-set-connection-property v "process-buffer" buffer)
2690 ;; Activate narrowing in order to save BUFFER contents.
2691 ;; Clear also the modification time; otherwise we might
2692 ;; be interrupted by `verify-visited-file-modtime'.
2693 (with-current-buffer (tramp-get-connection-buffer v)
2694 (let ((buffer-undo-list t))
2695 (clear-visited-file-modtime)
2696 (narrow-to-region (point-max) (point-max))
2697 (if command
2698 ;; Send the command.
2699 (tramp-send-command v command nil t) ; nooutput
2700 ;; Check, whether a pty is associated.
2701 (tramp-maybe-open-connection v)
2702 (unless (tramp-compat-process-get
2703 (tramp-get-connection-process v) 'remote-tty)
2704 (tramp-error
2705 v 'file-error
2706 "pty association is not supported for `%s'" name)))))
2707 (let ((p (tramp-get-connection-process v)))
2708 ;; Set sentinel and query flag for this process.
2709 (tramp-set-connection-property p "vector" v)
2710 (set-process-sentinel p 'tramp-process-sentinel)
2711 (tramp-compat-set-process-query-on-exit-flag p t)
2712 ;; Return process.
2713 p)))
2714 ;; Save exit.
2715 (with-current-buffer (tramp-get-connection-buffer v)
2716 (if (string-match tramp-temp-buffer-name (buffer-name))
2717 (progn
2718 (set-process-buffer (tramp-get-connection-process v) nil)
2719 (kill-buffer (current-buffer)))
2720 (set-buffer-modified-p bmp)))
2721 (tramp-set-connection-property v "process-name" nil)
2722 (tramp-set-connection-property v "process-buffer" nil)))))
2724 (defun tramp-sh-handle-process-file
2725 (program &optional infile destination display &rest args)
2726 "Like `process-file' for Tramp files."
2727 ;; The implementation is not complete yet.
2728 (when (and (numberp destination) (zerop destination))
2729 (error "Implementation does not handle immediate return"))
2731 (with-parsed-tramp-file-name default-directory nil
2732 (let (command input tmpinput stderr tmpstderr outbuf ret)
2733 ;; Compute command.
2734 (setq command (mapconcat 'tramp-shell-quote-argument
2735 (cons program args) " "))
2736 ;; Determine input.
2737 (if (null infile)
2738 (setq input "/dev/null")
2739 (setq infile (expand-file-name infile))
2740 (if (tramp-equal-remote default-directory infile)
2741 ;; INFILE is on the same remote host.
2742 (setq input (with-parsed-tramp-file-name infile nil localname))
2743 ;; INFILE must be copied to remote host.
2744 (setq input (tramp-make-tramp-temp-file v)
2745 tmpinput (tramp-make-tramp-file-name method user host input))
2746 (copy-file infile tmpinput t)))
2747 (when input (setq command (format "%s <%s" command input)))
2749 ;; Determine output.
2750 (cond
2751 ;; Just a buffer.
2752 ((bufferp destination)
2753 (setq outbuf destination))
2754 ;; A buffer name.
2755 ((stringp destination)
2756 (setq outbuf (get-buffer-create destination)))
2757 ;; (REAL-DESTINATION ERROR-DESTINATION)
2758 ((consp destination)
2759 ;; output.
2760 (cond
2761 ((bufferp (car destination))
2762 (setq outbuf (car destination)))
2763 ((stringp (car destination))
2764 (setq outbuf (get-buffer-create (car destination))))
2765 ((car destination)
2766 (setq outbuf (current-buffer))))
2767 ;; stderr.
2768 (cond
2769 ((stringp (cadr destination))
2770 (setcar (cdr destination) (expand-file-name (cadr destination)))
2771 (if (tramp-equal-remote default-directory (cadr destination))
2772 ;; stderr is on the same remote host.
2773 (setq stderr (with-parsed-tramp-file-name
2774 (cadr destination) nil localname))
2775 ;; stderr must be copied to remote host. The temporary
2776 ;; file must be deleted after execution.
2777 (setq stderr (tramp-make-tramp-temp-file v)
2778 tmpstderr (tramp-make-tramp-file-name
2779 method user host stderr))))
2780 ;; stderr to be discarded.
2781 ((null (cadr destination))
2782 (setq stderr "/dev/null"))))
2783 ;; 't
2784 (destination
2785 (setq outbuf (current-buffer))))
2786 (when stderr (setq command (format "%s 2>%s" command stderr)))
2788 ;; Send the command. It might not return in time, so we protect
2789 ;; it. Call it in a subshell, in order to preserve working
2790 ;; directory.
2791 (condition-case nil
2792 (unwind-protect
2793 (setq ret
2794 (if (tramp-send-command-and-check
2795 v (format "\\cd %s; %s"
2796 (tramp-shell-quote-argument localname)
2797 command)
2798 t t)
2799 0 1))
2800 ;; We should show the output anyway.
2801 (when outbuf
2802 (with-current-buffer outbuf
2803 (insert
2804 (with-current-buffer (tramp-get-connection-buffer v)
2805 (buffer-string))))
2806 (when display (display-buffer outbuf))))
2807 ;; When the user did interrupt, we should do it also. We use
2808 ;; return code -1 as marker.
2809 (quit
2810 (kill-buffer (tramp-get-connection-buffer v))
2811 (setq ret -1))
2812 ;; Handle errors.
2813 (error
2814 (kill-buffer (tramp-get-connection-buffer v))
2815 (setq ret 1)))
2817 ;; Provide error file.
2818 (when tmpstderr (rename-file tmpstderr (cadr destination) t))
2820 ;; Cleanup. We remove all file cache values for the connection,
2821 ;; because the remote process could have changed them.
2822 (when tmpinput (delete-file tmpinput))
2824 ;; `process-file-side-effects' has been introduced with GNU
2825 ;; Emacs 23.2. If set to `nil', no remote file will be changed
2826 ;; by `program'. If it doesn't exist, we assume its default
2827 ;; value 't'.
2828 (unless (and (boundp 'process-file-side-effects)
2829 (not (symbol-value 'process-file-side-effects)))
2830 (tramp-flush-directory-property v ""))
2832 ;; Return exit status.
2833 (if (equal ret -1)
2834 (keyboard-quit)
2835 ret))))
2837 (defun tramp-sh-handle-call-process-region
2838 (start end program &optional delete buffer display &rest args)
2839 "Like `call-process-region' for Tramp files."
2840 (let ((tmpfile (tramp-compat-make-temp-file "")))
2841 (write-region start end tmpfile)
2842 (when delete (delete-region start end))
2843 (unwind-protect
2844 (apply 'call-process program tmpfile buffer display args)
2845 (delete-file tmpfile))))
2847 (defun tramp-sh-handle-shell-command
2848 (command &optional output-buffer error-buffer)
2849 "Like `shell-command' for Tramp files."
2850 (let* ((asynchronous (string-match "[ \t]*&[ \t]*\\'" command))
2851 ;; We cannot use `shell-file-name' and `shell-command-switch',
2852 ;; they are variables of the local host.
2853 (args (list
2854 (tramp-get-method-parameter
2855 (tramp-file-name-method
2856 (tramp-dissect-file-name default-directory))
2857 'tramp-remote-sh)
2858 "-c" (substring command 0 asynchronous)))
2859 current-buffer-p
2860 (output-buffer
2861 (cond
2862 ((bufferp output-buffer) output-buffer)
2863 ((stringp output-buffer) (get-buffer-create output-buffer))
2864 (output-buffer
2865 (setq current-buffer-p t)
2866 (current-buffer))
2867 (t (get-buffer-create
2868 (if asynchronous
2869 "*Async Shell Command*"
2870 "*Shell Command Output*")))))
2871 (error-buffer
2872 (cond
2873 ((bufferp error-buffer) error-buffer)
2874 ((stringp error-buffer) (get-buffer-create error-buffer))))
2875 (buffer
2876 (if (and (not asynchronous) error-buffer)
2877 (with-parsed-tramp-file-name default-directory nil
2878 (list output-buffer (tramp-make-tramp-temp-file v)))
2879 output-buffer))
2880 (p (get-buffer-process output-buffer)))
2882 ;; Check whether there is another process running. Tramp does not
2883 ;; support 2 (asynchronous) processes in parallel.
2884 (when p
2885 (if (yes-or-no-p "A command is running. Kill it? ")
2886 (ignore-errors (kill-process p))
2887 (error "Shell command in progress")))
2889 (if current-buffer-p
2890 (progn
2891 (barf-if-buffer-read-only)
2892 (push-mark nil t))
2893 (with-current-buffer output-buffer
2894 (setq buffer-read-only nil)
2895 (erase-buffer)))
2897 (if (and (not current-buffer-p) (integerp asynchronous))
2898 (prog1
2899 ;; Run the process.
2900 (apply 'start-file-process "*Async Shell*" buffer args)
2901 ;; Display output.
2902 (pop-to-buffer output-buffer)
2903 (setq mode-line-process '(":%s"))
2904 (shell-mode))
2906 (prog1
2907 ;; Run the process.
2908 (apply 'process-file (car args) nil buffer nil (cdr args))
2909 ;; Insert error messages if they were separated.
2910 (when (listp buffer)
2911 (with-current-buffer error-buffer
2912 (insert-file-contents (cadr buffer)))
2913 (delete-file (cadr buffer)))
2914 (if current-buffer-p
2915 ;; This is like exchange-point-and-mark, but doesn't
2916 ;; activate the mark. It is cleaner to avoid activation,
2917 ;; even though the command loop would deactivate the mark
2918 ;; because we inserted text.
2919 (goto-char (prog1 (mark t)
2920 (set-marker (mark-marker) (point)
2921 (current-buffer))))
2922 ;; There's some output, display it.
2923 (when (with-current-buffer output-buffer (> (point-max) (point-min)))
2924 (if (functionp 'display-message-or-buffer)
2925 (tramp-compat-funcall 'display-message-or-buffer output-buffer)
2926 (pop-to-buffer output-buffer))))))))
2928 (defun tramp-sh-handle-file-local-copy (filename)
2929 "Like `file-local-copy' for Tramp files."
2930 (with-parsed-tramp-file-name filename nil
2931 (unless (file-exists-p filename)
2932 (tramp-error
2933 v 'file-error
2934 "Cannot make local copy of non-existing file `%s'" filename))
2936 (let* ((size (nth 7 (file-attributes (file-truename filename))))
2937 (rem-enc (tramp-get-inline-coding v "remote-encoding" size))
2938 (loc-dec (tramp-get-inline-coding v "local-decoding" size))
2939 (tmpfile (tramp-compat-make-temp-file filename)))
2941 (condition-case err
2942 (cond
2943 ;; `copy-file' handles direct copy and out-of-band methods.
2944 ((or (tramp-local-host-p v)
2945 (tramp-method-out-of-band-p v size))
2946 (copy-file filename tmpfile t t))
2948 ;; Use inline encoding for file transfer.
2949 (rem-enc
2950 (save-excursion
2951 (with-progress-reporter
2952 v 3 (format "Encoding remote file %s" filename)
2953 (tramp-barf-unless-okay
2954 v (format rem-enc (tramp-shell-quote-argument localname))
2955 "Encoding remote file failed"))
2957 (if (functionp loc-dec)
2958 ;; If local decoding is a function, we call it. We
2959 ;; must disable multibyte, because
2960 ;; `uudecode-decode-region' doesn't handle it
2961 ;; correctly.
2962 (with-temp-buffer
2963 (set-buffer-multibyte nil)
2964 (insert-buffer-substring (tramp-get-buffer v))
2965 (with-progress-reporter
2966 v 3 (format "Decoding remote file %s with function %s"
2967 filename loc-dec)
2968 (funcall loc-dec (point-min) (point-max))
2969 ;; Unset `file-name-handler-alist'. Otherwise,
2970 ;; epa-file gets confused.
2971 (let (file-name-handler-alist
2972 (coding-system-for-write 'binary))
2973 (write-region (point-min) (point-max) tmpfile))))
2975 ;; If tramp-decoding-function is not defined for this
2976 ;; method, we invoke tramp-decoding-command instead.
2977 (let ((tmpfile2 (tramp-compat-make-temp-file filename)))
2978 ;; Unset `file-name-handler-alist'. Otherwise,
2979 ;; epa-file gets confused.
2980 (let (file-name-handler-alist
2981 (coding-system-for-write 'binary))
2982 (write-region (point-min) (point-max) tmpfile2))
2983 (with-progress-reporter
2984 v 3 (format "Decoding remote file %s with command %s"
2985 filename loc-dec)
2986 (unwind-protect
2987 (tramp-call-local-coding-command
2988 loc-dec tmpfile2 tmpfile)
2989 (delete-file tmpfile2)))))
2991 ;; Set proper permissions.
2992 (set-file-modes tmpfile (tramp-default-file-modes filename))
2993 ;; Set local user ownership.
2994 (tramp-set-file-uid-gid tmpfile)))
2996 ;; Oops, I don't know what to do.
2997 (t (tramp-error
2998 v 'file-error "Wrong method specification for `%s'" method)))
3000 ;; Error handling.
3001 ((error quit)
3002 (delete-file tmpfile)
3003 (signal (car err) (cdr err))))
3005 (run-hooks 'tramp-handle-file-local-copy-hook)
3006 tmpfile)))
3008 ;; This is needed for XEmacs only. Code stolen from files.el.
3009 (defun tramp-sh-handle-insert-file-contents-literally
3010 (filename &optional visit beg end replace)
3011 "Like `insert-file-contents-literally' for Tramp files."
3012 (let ((format-alist nil)
3013 (after-insert-file-functions nil)
3014 (coding-system-for-read 'no-conversion)
3015 (coding-system-for-write 'no-conversion)
3016 (find-buffer-file-type-function
3017 (if (fboundp 'find-buffer-file-type)
3018 (symbol-function 'find-buffer-file-type)
3019 nil))
3020 (inhibit-file-name-handlers '(jka-compr-handler image-file-handler))
3021 (inhibit-file-name-operation 'insert-file-contents))
3022 (unwind-protect
3023 (progn
3024 (fset 'find-buffer-file-type (lambda (filename) t))
3025 (insert-file-contents filename visit beg end replace))
3026 ;; Save exit.
3027 (if find-buffer-file-type-function
3028 (fset 'find-buffer-file-type find-buffer-file-type-function)
3029 (fmakunbound 'find-buffer-file-type)))))
3031 (defun tramp-sh-handle-make-auto-save-file-name ()
3032 "Like `make-auto-save-file-name' for Tramp files.
3033 Returns a file name in `tramp-auto-save-directory' for autosaving this file."
3034 (let ((tramp-auto-save-directory tramp-auto-save-directory)
3035 (buffer-file-name
3036 (tramp-subst-strs-in-string
3037 '(("_" . "|")
3038 ("/" . "_a")
3039 (":" . "_b")
3040 ("|" . "__")
3041 ("[" . "_l")
3042 ("]" . "_r"))
3043 (buffer-file-name))))
3044 ;; File name must be unique. This is ensured with Emacs 22 (see
3045 ;; UNIQUIFY element of `auto-save-file-name-transforms'); but for
3046 ;; all other cases we must do it ourselves.
3047 (when (boundp 'auto-save-file-name-transforms)
3048 (mapc
3049 (lambda (x)
3050 (when (and (string-match (car x) buffer-file-name)
3051 (not (car (cddr x))))
3052 (setq tramp-auto-save-directory
3053 (or tramp-auto-save-directory
3054 (tramp-compat-temporary-file-directory)))))
3055 (symbol-value 'auto-save-file-name-transforms)))
3056 ;; Create directory.
3057 (when tramp-auto-save-directory
3058 (setq buffer-file-name
3059 (expand-file-name buffer-file-name tramp-auto-save-directory))
3060 (unless (file-exists-p tramp-auto-save-directory)
3061 (make-directory tramp-auto-save-directory t)))
3062 ;; Run plain `make-auto-save-file-name'. There might be an advice when
3063 ;; it is not a magic file name operation (since Emacs 22).
3064 ;; We must deactivate it temporarily.
3065 (if (not (ad-is-active 'make-auto-save-file-name))
3066 (tramp-run-real-handler 'make-auto-save-file-name nil)
3067 ;; else
3068 (ad-deactivate 'make-auto-save-file-name)
3069 (prog1
3070 (tramp-run-real-handler 'make-auto-save-file-name nil)
3071 (ad-activate 'make-auto-save-file-name)))))
3073 ;; CCC grok LOCKNAME
3074 (defun tramp-sh-handle-write-region
3075 (start end filename &optional append visit lockname confirm)
3076 "Like `write-region' for Tramp files."
3077 (setq filename (expand-file-name filename))
3078 (with-parsed-tramp-file-name filename nil
3079 ;; Following part commented out because we don't know what to do about
3080 ;; file locking, and it does not appear to be a problem to ignore it.
3081 ;; Ange-ftp ignores it, too.
3082 ;; (when (and lockname (stringp lockname))
3083 ;; (setq lockname (expand-file-name lockname)))
3084 ;; (unless (or (eq lockname nil)
3085 ;; (string= lockname filename))
3086 ;; (error
3087 ;; "tramp-sh-handle-write-region: LOCKNAME must be nil or equal FILENAME"))
3089 ;; XEmacs takes a coding system as the seventh argument, not `confirm'.
3090 (when (and (not (featurep 'xemacs)) confirm (file-exists-p filename))
3091 (unless (y-or-n-p (format "File %s exists; overwrite anyway? " filename))
3092 (tramp-error v 'file-error "File not overwritten")))
3094 (let ((uid (or (nth 2 (tramp-compat-file-attributes filename 'integer))
3095 (tramp-get-remote-uid v 'integer)))
3096 (gid (or (nth 3 (tramp-compat-file-attributes filename 'integer))
3097 (tramp-get-remote-gid v 'integer))))
3099 (if (and (tramp-local-host-p v)
3100 ;; `file-writable-p' calls `file-expand-file-name'. We
3101 ;; cannot use `tramp-run-real-handler' therefore.
3102 (let (file-name-handler-alist)
3103 (and
3104 (file-writable-p (file-name-directory localname))
3105 (or (file-directory-p localname)
3106 (file-writable-p localname)))))
3107 ;; Short track: if we are on the local host, we can run directly.
3108 (tramp-run-real-handler
3109 'write-region
3110 (list start end localname append 'no-message lockname confirm))
3112 (let ((modes (save-excursion (tramp-default-file-modes filename)))
3113 ;; We use this to save the value of
3114 ;; `last-coding-system-used' after writing the tmp
3115 ;; file. At the end of the function, we set
3116 ;; `last-coding-system-used' to this saved value. This
3117 ;; way, any intermediary coding systems used while
3118 ;; talking to the remote shell or suchlike won't hose
3119 ;; this variable. This approach was snarfed from
3120 ;; ange-ftp.el.
3121 coding-system-used
3122 ;; Write region into a tmp file. This isn't really
3123 ;; needed if we use an encoding function, but currently
3124 ;; we use it always because this makes the logic
3125 ;; simpler.
3126 (tmpfile (or tramp-temp-buffer-file-name
3127 (tramp-compat-make-temp-file filename))))
3129 ;; If `append' is non-nil, we copy the file locally, and let
3130 ;; the native `write-region' implementation do the job.
3131 (when append (copy-file filename tmpfile 'ok))
3133 ;; We say `no-message' here because we don't want the
3134 ;; visited file modtime data to be clobbered from the temp
3135 ;; file. We call `set-visited-file-modtime' ourselves later
3136 ;; on. We must ensure that `file-coding-system-alist'
3137 ;; matches `tmpfile'.
3138 (let (file-name-handler-alist
3139 (file-coding-system-alist
3140 (tramp-find-file-name-coding-system-alist filename tmpfile)))
3141 (condition-case err
3142 (tramp-run-real-handler
3143 'write-region
3144 (list start end tmpfile append 'no-message lockname confirm))
3145 ((error quit)
3146 (setq tramp-temp-buffer-file-name nil)
3147 (delete-file tmpfile)
3148 (signal (car err) (cdr err))))
3150 ;; Now, `last-coding-system-used' has the right value. Remember it.
3151 (when (boundp 'last-coding-system-used)
3152 (setq coding-system-used
3153 (symbol-value 'last-coding-system-used))))
3155 ;; The permissions of the temporary file should be set. If
3156 ;; filename does not exist (eq modes nil) it has been
3157 ;; renamed to the backup file. This case `save-buffer'
3158 ;; handles permissions.
3159 ;; Ensure that it is still readable.
3160 (when modes
3161 (set-file-modes
3162 tmpfile
3163 (logior (or modes 0) (tramp-compat-octal-to-decimal "0400"))))
3165 ;; This is a bit lengthy due to the different methods
3166 ;; possible for file transfer. First, we check whether the
3167 ;; method uses an rcp program. If so, we call it.
3168 ;; Otherwise, both encoding and decoding command must be
3169 ;; specified. However, if the method _also_ specifies an
3170 ;; encoding function, then that is used for encoding the
3171 ;; contents of the tmp file.
3172 (let* ((size (nth 7 (file-attributes tmpfile)))
3173 (rem-dec (tramp-get-inline-coding v "remote-decoding" size))
3174 (loc-enc (tramp-get-inline-coding v "local-encoding" size)))
3175 (cond
3176 ;; `copy-file' handles direct copy and out-of-band methods.
3177 ((or (tramp-local-host-p v)
3178 (tramp-method-out-of-band-p v size))
3179 (if (and (not (stringp start))
3180 (= (or end (point-max)) (point-max))
3181 (= (or start (point-min)) (point-min))
3182 (tramp-get-method-parameter
3183 method 'tramp-copy-keep-tmpfile))
3184 (progn
3185 (setq tramp-temp-buffer-file-name tmpfile)
3186 (condition-case err
3187 ;; We keep the local file for performance
3188 ;; reasons, useful for "rsync".
3189 (copy-file tmpfile filename t)
3190 ((error quit)
3191 (setq tramp-temp-buffer-file-name nil)
3192 (delete-file tmpfile)
3193 (signal (car err) (cdr err)))))
3194 (setq tramp-temp-buffer-file-name nil)
3195 ;; Don't rename, in order to keep context in SELinux.
3196 (unwind-protect
3197 (copy-file tmpfile filename t)
3198 (delete-file tmpfile))))
3200 ;; Use inline file transfer.
3201 (rem-dec
3202 ;; Encode tmpfile.
3203 (unwind-protect
3204 (with-temp-buffer
3205 (set-buffer-multibyte nil)
3206 ;; Use encoding function or command.
3207 (if (functionp loc-enc)
3208 (with-progress-reporter
3209 v 3 (format "Encoding region using function `%s'"
3210 loc-enc)
3211 (let ((coding-system-for-read 'binary))
3212 (insert-file-contents-literally tmpfile))
3213 ;; The following `let' is a workaround for the
3214 ;; base64.el that comes with pgnus-0.84. If
3215 ;; both of the following conditions are
3216 ;; satisfied, it tries to write to a local
3217 ;; file in default-directory, but at this
3218 ;; point, default-directory is remote.
3219 ;; (`call-process-region' can't write to
3220 ;; remote files, it seems.) The file in
3221 ;; question is a tmp file anyway.
3222 (let ((default-directory
3223 (tramp-compat-temporary-file-directory)))
3224 (funcall loc-enc (point-min) (point-max))))
3226 (with-progress-reporter
3227 v 3 (format "Encoding region using command `%s'"
3228 loc-enc)
3229 (unless (zerop (tramp-call-local-coding-command
3230 loc-enc tmpfile t))
3231 (tramp-error
3232 v 'file-error
3233 (concat "Cannot write to `%s', "
3234 "local encoding command `%s' failed")
3235 filename loc-enc))))
3237 ;; Send buffer into remote decoding command which
3238 ;; writes to remote file. Because this happens on
3239 ;; the remote host, we cannot use the function.
3240 (with-progress-reporter
3242 (format "Decoding region into remote file %s" filename)
3243 (goto-char (point-max))
3244 (unless (bolp) (newline))
3245 (tramp-send-command
3247 (format
3248 (concat rem-dec " <<'EOF'\n%sEOF")
3249 (tramp-shell-quote-argument localname)
3250 (buffer-string)))
3251 (tramp-barf-unless-okay
3252 v nil
3253 "Couldn't write region to `%s', decode using `%s' failed"
3254 filename rem-dec)
3255 ;; When `file-precious-flag' is set, the region is
3256 ;; written to a temporary file. Check that the
3257 ;; checksum is equal to that from the local tmpfile.
3258 (when file-precious-flag
3259 (erase-buffer)
3260 (and
3261 ;; cksum runs locally, if possible.
3262 (zerop (tramp-compat-call-process "cksum" tmpfile t))
3263 ;; cksum runs remotely.
3264 (tramp-send-command-and-check
3266 (format
3267 "cksum <%s" (tramp-shell-quote-argument localname)))
3268 ;; ... they are different.
3269 (not
3270 (string-equal
3271 (buffer-string)
3272 (with-current-buffer (tramp-get-buffer v)
3273 (buffer-string))))
3274 (tramp-error
3275 v 'file-error
3276 (concat "Couldn't write region to `%s',"
3277 " decode using `%s' failed")
3278 filename rem-dec)))))
3280 ;; Save exit.
3281 (delete-file tmpfile)))
3283 ;; That's not expected.
3285 (tramp-error
3286 v 'file-error
3287 (concat "Method `%s' should specify both encoding and "
3288 "decoding command or an rcp program")
3289 method))))
3291 ;; Make `last-coding-system-used' have the right value.
3292 (when coding-system-used
3293 (set 'last-coding-system-used coding-system-used))))
3295 (tramp-flush-file-property v (file-name-directory localname))
3296 (tramp-flush-file-property v localname)
3298 ;; We must protect `last-coding-system-used', now we have set it
3299 ;; to its correct value.
3300 (let (last-coding-system-used (need-chown t))
3301 ;; Set file modification time.
3302 (when (or (eq visit t) (stringp visit))
3303 (let ((file-attr (file-attributes filename)))
3304 (set-visited-file-modtime
3305 ;; We must pass modtime explicitly, because filename can
3306 ;; be different from (buffer-file-name), f.e. if
3307 ;; `file-precious-flag' is set.
3308 (nth 5 file-attr))
3309 (when (and (eq (nth 2 file-attr) uid)
3310 (eq (nth 3 file-attr) gid))
3311 (setq need-chown nil))))
3313 ;; Set the ownership.
3314 (when need-chown
3315 (tramp-set-file-uid-gid filename uid gid))
3316 (when (or (eq visit t) (null visit) (stringp visit))
3317 (tramp-message v 0 "Wrote %s" filename))
3318 (run-hooks 'tramp-handle-write-region-hook)))))
3320 (defvar tramp-vc-registered-file-names nil
3321 "List used to collect file names, which are checked during `vc-registered'.")
3323 ;; VC backends check for the existence of various different special
3324 ;; files. This is very time consuming, because every single check
3325 ;; requires a remote command (the file cache must be invalidated).
3326 ;; Therefore, we apply a kind of optimization. We install the file
3327 ;; name handler `tramp-vc-file-name-handler', which does nothing but
3328 ;; remembers all file names for which `file-exists-p' or
3329 ;; `file-readable-p' has been applied. A first run of `vc-registered'
3330 ;; is performed. Afterwards, a script is applied for all collected
3331 ;; file names, using just one remote command. The result of this
3332 ;; script is used to fill the file cache with actual values. Now we
3333 ;; can reset the file name handlers, and we make a second run of
3334 ;; `vc-registered', which returns the expected result without sending
3335 ;; any other remote command.
3336 (defun tramp-sh-handle-vc-registered (file)
3337 "Like `vc-registered' for Tramp files."
3338 (tramp-compat-with-temp-message ""
3339 (with-parsed-tramp-file-name file nil
3340 (with-progress-reporter
3341 v 3 (format "Checking `vc-registered' for %s" file)
3343 ;; There could be new files, created by the vc backend. We
3344 ;; cannot reuse the old cache entries, therefore.
3345 (let (tramp-vc-registered-file-names
3346 (remote-file-name-inhibit-cache (current-time))
3347 (file-name-handler-alist
3348 `((,tramp-file-name-regexp . tramp-vc-file-name-handler))))
3350 ;; Here we collect only file names, which need an operation.
3351 (tramp-run-real-handler 'vc-registered (list file))
3352 (tramp-message v 10 "\n%s" tramp-vc-registered-file-names)
3354 ;; Send just one command, in order to fill the cache.
3355 (when tramp-vc-registered-file-names
3356 (tramp-maybe-send-script
3358 (format tramp-vc-registered-read-file-names
3359 (tramp-get-file-exists-command v)
3360 (format "%s -r" (tramp-get-test-command v)))
3361 "tramp_vc_registered_read_file_names")
3363 (dolist
3364 (elt
3365 (tramp-send-command-and-read
3367 (format
3368 "tramp_vc_registered_read_file_names <<'EOF'\n%s\nEOF\n"
3369 (mapconcat 'tramp-shell-quote-argument
3370 tramp-vc-registered-file-names
3371 "\n"))))
3373 (tramp-set-file-property
3374 v (car elt) (cadr elt) (cadr (cdr elt))))))
3376 ;; Second run. Now all `file-exists-p' or `file-readable-p'
3377 ;; calls shall be answered from the file cache. We unset
3378 ;; `process-file-side-effects' in order to keep the cache when
3379 ;; `process-file' calls appear.
3380 (let (process-file-side-effects)
3381 (tramp-run-real-handler 'vc-registered (list file)))))))
3383 ;;;###tramp-autoload
3384 (defun tramp-sh-file-name-handler (operation &rest args)
3385 "Invoke remote-shell Tramp file name handler.
3386 Fall back to normal file name handler if no Tramp handler exists."
3387 (when (and tramp-locked (not tramp-locker))
3388 (setq tramp-locked nil)
3389 (signal 'file-error (list "Forbidden reentrant call of Tramp")))
3390 (let ((tl tramp-locked))
3391 (unwind-protect
3392 (progn
3393 (setq tramp-locked t)
3394 (let ((tramp-locker t))
3395 (save-match-data
3396 (let ((fn (assoc operation tramp-sh-file-name-handler-alist)))
3397 (if fn
3398 (apply (cdr fn) args)
3399 (tramp-run-real-handler operation args))))))
3400 (setq tramp-locked tl))))
3402 (defun tramp-vc-file-name-handler (operation &rest args)
3403 "Invoke special file name handler, which collects files to be handled."
3404 (save-match-data
3405 (let ((filename
3406 (tramp-replace-environment-variables
3407 (apply 'tramp-file-name-for-operation operation args)))
3408 (fn (assoc operation tramp-sh-file-name-handler-alist)))
3409 (with-parsed-tramp-file-name filename nil
3410 (cond
3411 ;; That's what we want: file names, for which checks are
3412 ;; applied. We assume that VC uses only `file-exists-p' and
3413 ;; `file-readable-p' checks; otherwise we must extend the
3414 ;; list. We do not perform any action, but return nil, in
3415 ;; order to keep `vc-registered' running.
3416 ((and fn (memq operation '(file-exists-p file-readable-p)))
3417 (add-to-list 'tramp-vc-registered-file-names localname 'append)
3418 nil)
3419 ;; Tramp file name handlers like `expand-file-name'. They
3420 ;; must still work.
3422 (save-match-data (apply (cdr fn) args)))
3423 ;; Default file name handlers, we don't care.
3424 (t (tramp-run-real-handler operation args)))))))
3426 ;;; Internal Functions:
3428 (defun tramp-maybe-send-script (vec script name)
3429 "Define in remote shell function NAME implemented as SCRIPT.
3430 Only send the definition if it has not already been done."
3431 (let* ((p (tramp-get-connection-process vec))
3432 (scripts (tramp-get-connection-property p "scripts" nil)))
3433 (unless (member name scripts)
3434 (with-progress-reporter vec 5 (format "Sending script `%s'" name)
3435 ;; The script could contain a call of Perl. This is masked with `%s'.
3436 (tramp-barf-unless-okay
3438 (format "%s () {\n%s\n}" name
3439 (format script (tramp-get-remote-perl vec)))
3440 "Script %s sending failed" name)
3441 (tramp-set-connection-property p "scripts" (cons name scripts))))))
3443 (defun tramp-set-auto-save ()
3444 (when (and ;; ange-ftp has its own auto-save mechanism
3445 (eq (tramp-find-foreign-file-name-handler (buffer-file-name))
3446 'tramp-sh-file-name-handler)
3447 auto-save-default)
3448 (auto-save-mode 1)))
3449 (add-hook 'find-file-hooks 'tramp-set-auto-save t)
3450 (add-hook 'tramp-unload-hook
3451 (lambda ()
3452 (remove-hook 'find-file-hooks 'tramp-set-auto-save)))
3454 (defun tramp-run-test (switch filename)
3455 "Run `test' on the remote system, given a SWITCH and a FILENAME.
3456 Returns the exit code of the `test' program."
3457 (with-parsed-tramp-file-name filename nil
3458 (tramp-send-command-and-check
3460 (format
3461 "%s %s %s"
3462 (tramp-get-test-command v)
3463 switch
3464 (tramp-shell-quote-argument localname)))))
3466 (defun tramp-run-test2 (format-string file1 file2)
3467 "Run `test'-like program on the remote system, given FILE1, FILE2.
3468 FORMAT-STRING contains the program name, switches, and place holders.
3469 Returns the exit code of the `test' program. Barfs if the methods,
3470 hosts, or files, disagree."
3471 (unless (tramp-equal-remote file1 file2)
3472 (with-parsed-tramp-file-name (if (tramp-tramp-file-p file1) file1 file2) nil
3473 (tramp-error
3474 v 'file-error
3475 "tramp-run-test2 only implemented for same method, user, host")))
3476 (with-parsed-tramp-file-name file1 v1
3477 (with-parsed-tramp-file-name file1 v2
3478 (tramp-send-command-and-check
3480 (format format-string
3481 (tramp-shell-quote-argument v1-localname)
3482 (tramp-shell-quote-argument v2-localname))))))
3484 (defun tramp-find-executable
3485 (vec progname dirlist &optional ignore-tilde ignore-path)
3486 "Searches for PROGNAME in $PATH and all directories mentioned in DIRLIST.
3487 First arg VEC specifies the connection, PROGNAME is the program
3488 to search for, and DIRLIST gives the list of directories to
3489 search. If IGNORE-TILDE is non-nil, directory names starting
3490 with `~' will be ignored. If IGNORE-PATH is non-nil, searches
3491 only in DIRLIST.
3493 Returns the absolute file name of PROGNAME, if found, and nil otherwise.
3495 This function expects to be in the right *tramp* buffer."
3496 (with-current-buffer (tramp-get-connection-buffer vec)
3497 (let (result)
3498 ;; Check whether the executable is in $PATH. "which(1)" does not
3499 ;; report always a correct error code; therefore we check the
3500 ;; number of words it returns.
3501 (unless ignore-path
3502 (tramp-send-command vec (format "which \\%s | wc -w" progname))
3503 (goto-char (point-min))
3504 (if (looking-at "^\\s-*1$")
3505 (setq result (concat "\\" progname))))
3506 (unless result
3507 (when ignore-tilde
3508 ;; Remove all ~/foo directories from dirlist. In XEmacs,
3509 ;; `remove' is in CL, and we want to avoid CL dependencies.
3510 (let (newdl d)
3511 (while dirlist
3512 (setq d (car dirlist))
3513 (setq dirlist (cdr dirlist))
3514 (unless (char-equal ?~ (aref d 0))
3515 (setq newdl (cons d newdl))))
3516 (setq dirlist (nreverse newdl))))
3517 (tramp-send-command
3519 (format (concat "while read d; "
3520 "do if test -x $d/%s -a -f $d/%s; "
3521 "then echo tramp_executable $d/%s; "
3522 "break; fi; done <<'EOF'\n"
3523 "%s\nEOF")
3524 progname progname progname (mapconcat 'identity dirlist "\n")))
3525 (goto-char (point-max))
3526 (when (search-backward "tramp_executable " nil t)
3527 (skip-chars-forward "^ ")
3528 (skip-chars-forward " ")
3529 (setq result (buffer-substring (point) (point-at-eol)))))
3530 result)))
3532 (defun tramp-set-remote-path (vec)
3533 "Sets the remote environment PATH to existing directories.
3534 I.e., for each directory in `tramp-remote-path', it is tested
3535 whether it exists and if so, it is added to the environment
3536 variable PATH."
3537 (tramp-message vec 5 (format "Setting $PATH environment variable"))
3538 (tramp-send-command
3539 vec (format "PATH=%s; export PATH"
3540 (mapconcat 'identity (tramp-get-remote-path vec) ":"))))
3542 ;; ------------------------------------------------------------
3543 ;; -- Communication with external shell --
3544 ;; ------------------------------------------------------------
3546 (defun tramp-find-file-exists-command (vec)
3547 "Find a command on the remote host for checking if a file exists.
3548 Here, we are looking for a command which has zero exit status if the
3549 file exists and nonzero exit status otherwise."
3550 (let ((existing "/")
3551 (nonexisting
3552 (tramp-shell-quote-argument "/ this file does not exist "))
3553 result)
3554 ;; The algorithm is as follows: we try a list of several commands.
3555 ;; For each command, we first run `$cmd /' -- this should return
3556 ;; true, as the root directory always exists. And then we run
3557 ;; `$cmd /this\ file\ does\ not\ exist ', hoping that the file indeed
3558 ;; does not exist. This should return false. We use the first
3559 ;; command we find that seems to work.
3560 ;; The list of commands to try is as follows:
3561 ;; `ls -d' This works on most systems, but NetBSD 1.4
3562 ;; has a bug: `ls' always returns zero exit
3563 ;; status, even for files which don't exist.
3564 ;; `test -e' Some Bourne shells have a `test' builtin
3565 ;; which does not know the `-e' option.
3566 ;; `/bin/test -e' For those, the `test' binary on disk normally
3567 ;; provides the option. Alas, the binary
3568 ;; is sometimes `/bin/test' and sometimes it's
3569 ;; `/usr/bin/test'.
3570 ;; `/usr/bin/test -e' In case `/bin/test' does not exist.
3571 (unless (or
3572 (and (setq result (format "%s -e" (tramp-get-test-command vec)))
3573 (tramp-send-command-and-check
3574 vec (format "%s %s" result existing))
3575 (not (tramp-send-command-and-check
3576 vec (format "%s %s" result nonexisting))))
3577 (and (setq result "/bin/test -e")
3578 (tramp-send-command-and-check
3579 vec (format "%s %s" result existing))
3580 (not (tramp-send-command-and-check
3581 vec (format "%s %s" result nonexisting))))
3582 (and (setq result "/usr/bin/test -e")
3583 (tramp-send-command-and-check
3584 vec (format "%s %s" result existing))
3585 (not (tramp-send-command-and-check
3586 vec (format "%s %s" result nonexisting))))
3587 (and (setq result (format "%s -d" (tramp-get-ls-command vec)))
3588 (tramp-send-command-and-check
3589 vec (format "%s %s" result existing))
3590 (not (tramp-send-command-and-check
3591 vec (format "%s %s" result nonexisting)))))
3592 (tramp-error
3593 vec 'file-error "Couldn't find command to check if file exists"))
3594 result))
3596 (defun tramp-open-shell (vec shell)
3597 "Opens shell SHELL."
3598 (with-progress-reporter vec 5 (format "Opening remote shell `%s'" shell)
3599 ;; Find arguments for this shell.
3600 (let ((tramp-end-of-output tramp-initial-end-of-output)
3601 (alist tramp-sh-extra-args)
3602 item extra-args)
3603 (while (and alist (null extra-args))
3604 (setq item (pop alist))
3605 (when (string-match (car item) shell)
3606 (setq extra-args (cdr item))))
3607 (when extra-args (setq shell (concat shell " " extra-args)))
3608 (tramp-send-command
3609 vec (format "exec env ENV='' PROMPT_COMMAND='' PS1=%s PS2='' PS3='' %s"
3610 (shell-quote-argument tramp-end-of-output) shell)
3612 ;; Setting prompts.
3613 (tramp-send-command
3614 vec (format "PS1=%s" (shell-quote-argument tramp-end-of-output)) t)
3615 (tramp-send-command vec "PS2=''" t)
3616 (tramp-send-command vec "PS3=''" t)
3617 (tramp-send-command vec "PROMPT_COMMAND=''" t)))
3619 (defun tramp-find-shell (vec)
3620 "Opens a shell on the remote host which groks tilde expansion."
3621 (unless (tramp-get-connection-property vec "remote-shell" nil)
3622 (let (shell)
3623 (with-current-buffer (tramp-get-buffer vec)
3624 (tramp-send-command vec "echo ~root" t)
3625 (cond
3626 ((or (string-match "^~root$" (buffer-string))
3627 ;; The default shell (ksh93) of OpenSolaris is buggy.
3628 (string-equal (tramp-get-connection-property vec "uname" "")
3629 "SunOS 5.11"))
3630 (setq shell
3631 (or (tramp-find-executable
3632 vec "bash" (tramp-get-remote-path vec) t t)
3633 (tramp-find-executable
3634 vec "ksh" (tramp-get-remote-path vec) t t)))
3635 (unless shell
3636 (tramp-error
3637 vec 'file-error
3638 "Couldn't find a shell which groks tilde expansion"))
3639 (tramp-message
3640 vec 5 "Starting remote shell `%s' for tilde expansion" shell)
3641 (tramp-open-shell vec shell))
3643 (t (tramp-message
3644 vec 5 "Remote `%s' groks tilde expansion, good"
3645 (tramp-set-connection-property
3646 vec "remote-shell"
3647 (tramp-get-method-parameter
3648 (tramp-file-name-method vec) 'tramp-remote-sh)))))))))
3650 ;; Utility functions.
3652 (defun tramp-barf-if-no-shell-prompt (proc timeout &rest error-args)
3653 "Wait for shell prompt and barf if none appears.
3654 Looks at process PROC to see if a shell prompt appears in TIMEOUT
3655 seconds. If not, it produces an error message with the given ERROR-ARGS."
3656 (unless
3657 (tramp-wait-for-regexp
3658 proc timeout
3659 (format
3660 "\\(%s\\|%s\\)\\'" shell-prompt-pattern tramp-shell-prompt-pattern))
3661 (apply 'tramp-error-with-buffer nil proc 'file-error error-args)))
3663 (defun tramp-open-connection-setup-interactive-shell (proc vec)
3664 "Set up an interactive shell.
3665 Mainly sets the prompt and the echo correctly. PROC is the shell
3666 process to set up. VEC specifies the connection."
3667 (let ((tramp-end-of-output tramp-initial-end-of-output))
3668 ;; It is useful to set the prompt in the following command because
3669 ;; some people have a setting for $PS1 which /bin/sh doesn't know
3670 ;; about and thus /bin/sh will display a strange prompt. For
3671 ;; example, if $PS1 has "${CWD}" in the value, then ksh will
3672 ;; display the current working directory but /bin/sh will display
3673 ;; a dollar sign. The following command line sets $PS1 to a sane
3674 ;; value, and works under Bourne-ish shells as well as csh-like
3675 ;; shells. Daniel Pittman reports that the unusual positioning of
3676 ;; the single quotes makes it work under `rc', too. We also unset
3677 ;; the variable $ENV because that is read by some sh
3678 ;; implementations (eg, bash when called as sh) on startup; this
3679 ;; way, we avoid the startup file clobbering $PS1. $PROMPT_COMMAND
3680 ;; is another way to set the prompt in /bin/bash, it must be
3681 ;; discarded as well.
3682 (tramp-open-shell
3684 (tramp-get-method-parameter (tramp-file-name-method vec) 'tramp-remote-sh))
3686 ;; Disable echo.
3687 (tramp-message vec 5 "Setting up remote shell environment")
3688 (tramp-send-command vec "stty -inlcr -echo kill '^U' erase '^H'" t)
3689 ;; Check whether the echo has really been disabled. Some
3690 ;; implementations, like busybox of embedded GNU/Linux, don't
3691 ;; support disabling.
3692 (tramp-send-command vec "echo foo" t)
3693 (with-current-buffer (process-buffer proc)
3694 (goto-char (point-min))
3695 (when (looking-at "echo foo")
3696 (tramp-set-connection-property proc "remote-echo" t)
3697 (tramp-message vec 5 "Remote echo still on. Ok.")
3698 ;; Make sure backspaces and their echo are enabled and no line
3699 ;; width magic interferes with them.
3700 (tramp-send-command vec "stty icanon erase ^H cols 32767" t))))
3702 (tramp-message vec 5 "Setting shell prompt")
3703 (tramp-send-command
3704 vec (format "PS1=%s" (shell-quote-argument tramp-end-of-output)) t)
3705 (tramp-send-command vec "PS2=''" t)
3706 (tramp-send-command vec "PS3=''" t)
3707 (tramp-send-command vec "PROMPT_COMMAND=''" t)
3709 ;; Try to set up the coding system correctly.
3710 ;; CCC this can't be the right way to do it. Hm.
3711 (tramp-message vec 5 "Determining coding system")
3712 (tramp-send-command vec "echo foo ; echo bar" t)
3713 (with-current-buffer (process-buffer proc)
3714 (goto-char (point-min))
3715 (if (featurep 'mule)
3716 ;; Use MULE to select the right EOL convention for communicating
3717 ;; with the process.
3718 (let* ((cs (or (tramp-compat-funcall 'process-coding-system proc)
3719 (cons 'undecided 'undecided)))
3720 cs-decode cs-encode)
3721 (when (symbolp cs) (setq cs (cons cs cs)))
3722 (setq cs-decode (car cs))
3723 (setq cs-encode (cdr cs))
3724 (unless cs-decode (setq cs-decode 'undecided))
3725 (unless cs-encode (setq cs-encode 'undecided))
3726 (setq cs-encode (tramp-compat-coding-system-change-eol-conversion
3727 cs-encode 'unix))
3728 (when (search-forward "\r" nil t)
3729 (setq cs-decode (tramp-compat-coding-system-change-eol-conversion
3730 cs-decode 'dos)))
3731 (tramp-compat-funcall
3732 'set-buffer-process-coding-system cs-decode cs-encode)
3733 (tramp-message
3734 vec 5 "Setting coding system to `%s' and `%s'" cs-decode cs-encode))
3735 ;; Look for ^M and do something useful if found.
3736 (when (search-forward "\r" nil t)
3737 ;; We have found a ^M but cannot frob the process coding system
3738 ;; because we're running on a non-MULE Emacs. Let's try
3739 ;; stty, instead.
3740 (tramp-send-command vec "stty -onlcr" t))))
3742 (tramp-send-command vec "set +o vi +o emacs" t)
3744 ;; Check whether the output of "uname -sr" has been changed. If
3745 ;; yes, this is a strong indication that we must expire all
3746 ;; connection properties. We start again with
3747 ;; `tramp-maybe-open-connection', it will be catched there.
3748 (tramp-message vec 5 "Checking system information")
3749 (let ((old-uname (tramp-get-connection-property vec "uname" nil))
3750 (new-uname
3751 (tramp-set-connection-property
3752 vec "uname"
3753 (tramp-send-command-and-read vec "echo \\\"`uname -sr`\\\""))))
3754 (when (and (stringp old-uname) (not (string-equal old-uname new-uname)))
3755 (with-current-buffer (tramp-get-debug-buffer vec)
3756 ;; Keep the debug buffer.
3757 (rename-buffer
3758 (generate-new-buffer-name tramp-temp-buffer-name) 'unique)
3759 (tramp-cleanup-connection vec)
3760 (if (= (point-min) (point-max))
3761 (kill-buffer nil)
3762 (rename-buffer (tramp-debug-buffer-name vec) 'unique))
3763 ;; We call `tramp-get-buffer' in order to keep the debug buffer.
3764 (tramp-get-buffer vec)
3765 (tramp-message
3766 vec 3
3767 "Connection reset, because remote host changed from `%s' to `%s'"
3768 old-uname new-uname)
3769 (throw 'uname-changed (tramp-maybe-open-connection vec)))))
3771 ;; Check whether the remote host suffers from buggy
3772 ;; `send-process-string'. This is known for FreeBSD (see comment in
3773 ;; `send_process', file process.c). I've tested sending 624 bytes
3774 ;; successfully, sending 625 bytes failed. Emacs makes a hack when
3775 ;; this host type is detected locally. It cannot handle remote
3776 ;; hosts, though.
3777 (with-connection-property proc "chunksize"
3778 (cond
3779 ((and (integerp tramp-chunksize) (> tramp-chunksize 0))
3780 tramp-chunksize)
3782 (tramp-message
3783 vec 5 "Checking remote host type for `send-process-string' bug")
3784 (if (string-match
3785 "^FreeBSD" (tramp-get-connection-property vec "uname" ""))
3786 500 0))))
3788 ;; Set remote PATH variable.
3789 (tramp-set-remote-path vec)
3791 ;; Search for a good shell before searching for a command which
3792 ;; checks if a file exists. This is done because Tramp wants to use
3793 ;; "test foo; echo $?" to check if various conditions hold, and
3794 ;; there are buggy /bin/sh implementations which don't execute the
3795 ;; "echo $?" part if the "test" part has an error. In particular,
3796 ;; the OpenSolaris /bin/sh is a problem. There are also other
3797 ;; problems with /bin/sh of OpenSolaris, like redirection of stderr
3798 ;; in function declarations, or changing HISTFILE in place.
3799 ;; Therefore, OpenSolaris' /bin/sh is replaced by bash, when
3800 ;; detected.
3801 (tramp-find-shell vec)
3803 ;; Disable unexpected output.
3804 (tramp-send-command vec "mesg n; biff n" t)
3806 ;; IRIX64 bash expands "!" even when in single quotes. This
3807 ;; destroys our shell functions, we must disable it. See
3808 ;; <http://stackoverflow.com/questions/3291692/irix-bash-shell-expands-expression-in-single-quotes-yet-shouldnt>.
3809 (when (string-match "^IRIX64" (tramp-get-connection-property vec "uname" ""))
3810 (tramp-send-command vec "set +H" t))
3812 ;; On BSD-like systems, ?\t is expanded to spaces. Suppress this.
3813 (when (string-match "BSD\\|Darwin"
3814 (tramp-get-connection-property vec "uname" ""))
3815 (tramp-send-command vec "stty -oxtabs" t))
3817 ;; Set `remote-tty' process property.
3818 (ignore-errors
3819 (let ((tty (tramp-send-command-and-read vec "echo \\\"`tty`\\\"")))
3820 (unless (zerop (length tty))
3821 (tramp-compat-process-put proc 'remote-tty tty))))
3823 ;; Dump stty settings in the traces.
3824 (when (>= tramp-verbose 9)
3825 (tramp-send-command vec "stty -a" t))
3827 ;; Set the environment.
3828 (tramp-message vec 5 "Setting default environment")
3830 (let ((env (copy-sequence tramp-remote-process-environment))
3831 unset item)
3832 (while env
3833 (setq item (tramp-compat-split-string (car env) "="))
3834 (setcdr item (mapconcat 'identity (cdr item) "="))
3835 (if (and (stringp (cdr item)) (not (string-equal (cdr item) "")))
3836 (tramp-send-command
3837 vec (format "%s=%s; export %s" (car item) (cdr item) (car item)) t)
3838 (push (car item) unset))
3839 (setq env (cdr env)))
3840 (when unset
3841 (tramp-send-command
3842 vec (format "unset %s" (mapconcat 'identity unset " ")) t))))
3844 ;; CCC: We should either implement a Perl version of base64 encoding
3845 ;; and decoding. Then we just use that in the last item. The other
3846 ;; alternative is to use the Perl version of UU encoding. But then
3847 ;; we need a Lisp version of uuencode.
3849 ;; Old text from documentation of tramp-methods:
3850 ;; Using a uuencode/uudecode inline method is discouraged, please use one
3851 ;; of the base64 methods instead since base64 encoding is much more
3852 ;; reliable and the commands are more standardized between the different
3853 ;; Unix versions. But if you can't use base64 for some reason, please
3854 ;; note that the default uudecode command does not work well for some
3855 ;; Unices, in particular AIX and Irix. For AIX, you might want to use
3856 ;; the following command for uudecode:
3858 ;; sed '/^begin/d;/^[` ]$/d;/^end/d' | iconv -f uucode -t ISO8859-1
3860 ;; For Irix, no solution is known yet.
3862 (autoload 'uudecode-decode-region "uudecode")
3864 (defconst tramp-local-coding-commands
3865 '((b64 base64-encode-region base64-decode-region)
3866 (uu tramp-uuencode-region uudecode-decode-region)
3867 (pack
3868 "perl -e 'binmode STDIN; binmode STDOUT; print pack(q{u*}, join q{}, <>)'"
3869 "perl -e 'binmode STDIN; binmode STDOUT; print unpack(q{u*}, join q{}, <>)'"))
3870 "List of local coding commands for inline transfer.
3871 Each item is a list that looks like this:
3873 \(FORMAT ENCODING DECODING\)
3875 FORMAT is symbol describing the encoding/decoding format. It can be
3876 `b64' for base64 encoding, `uu' for uu encoding, or `pack' for simple packing.
3878 ENCODING and DECODING can be strings, giving commands, or symbols,
3879 giving functions. If they are strings, then they can contain
3880 the \"%s\" format specifier. If that specifier is present, the input
3881 filename will be put into the command line at that spot. If the
3882 specifier is not present, the input should be read from standard
3883 input.
3885 If they are functions, they will be called with two arguments, start
3886 and end of region, and are expected to replace the region contents
3887 with the encoded or decoded results, respectively.")
3889 (defconst tramp-remote-coding-commands
3890 '((b64 "base64" "base64 -d -i")
3891 ;; "-i" is more robust with older base64 from GNU coreutils.
3892 ;; However, I don't know whether all base64 versions do supports
3893 ;; this option.
3894 (b64 "base64" "base64 -d")
3895 (b64 "mimencode -b" "mimencode -u -b")
3896 (b64 "mmencode -b" "mmencode -u -b")
3897 (b64 "recode data..base64" "recode base64..data")
3898 (b64 tramp-perl-encode-with-module tramp-perl-decode-with-module)
3899 (b64 tramp-perl-encode tramp-perl-decode)
3900 (uu "uuencode xxx" "uudecode -o /dev/stdout")
3901 (uu "uuencode xxx" "uudecode -o -")
3902 (uu "uuencode xxx" "uudecode -p")
3903 (uu "uuencode xxx" tramp-uudecode)
3904 (pack
3905 "perl -e 'binmode STDIN; binmode STDOUT; print pack(q{u*}, join q{}, <>)'"
3906 "perl -e 'binmode STDIN; binmode STDOUT; print unpack(q{u*}, join q{}, <>)'"))
3907 "List of remote coding commands for inline transfer.
3908 Each item is a list that looks like this:
3910 \(FORMAT ENCODING DECODING\)
3912 FORMAT is symbol describing the encoding/decoding format. It can be
3913 `b64' for base64 encoding, `uu' for uu encoding, or `pack' for simple packing.
3915 ENCODING and DECODING can be strings, giving commands, or symbols,
3916 giving variables. If they are strings, then they can contain
3917 the \"%s\" format specifier. If that specifier is present, the input
3918 filename will be put into the command line at that spot. If the
3919 specifier is not present, the input should be read from standard
3920 input.
3922 If they are variables, this variable is a string containing a Perl
3923 implementation for this functionality. This Perl program will be transferred
3924 to the remote host, and it is available as shell function with the same name.")
3926 (defun tramp-find-inline-encoding (vec)
3927 "Find an inline transfer encoding that works.
3928 Goes through the list `tramp-local-coding-commands' and
3929 `tramp-remote-coding-commands'."
3930 (save-excursion
3931 (let ((local-commands tramp-local-coding-commands)
3932 (magic "xyzzy")
3933 loc-enc loc-dec rem-enc rem-dec litem ritem found)
3934 (while (and local-commands (not found))
3935 (setq litem (pop local-commands))
3936 (catch 'wont-work-local
3937 (let ((format (nth 0 litem))
3938 (remote-commands tramp-remote-coding-commands))
3939 (setq loc-enc (nth 1 litem))
3940 (setq loc-dec (nth 2 litem))
3941 ;; If the local encoder or decoder is a string, the
3942 ;; corresponding command has to work locally.
3943 (if (not (stringp loc-enc))
3944 (tramp-message
3945 vec 5 "Checking local encoding function `%s'" loc-enc)
3946 (tramp-message
3947 vec 5 "Checking local encoding command `%s' for sanity" loc-enc)
3948 (unless (zerop (tramp-call-local-coding-command
3949 loc-enc nil nil))
3950 (throw 'wont-work-local nil)))
3951 (if (not (stringp loc-dec))
3952 (tramp-message
3953 vec 5 "Checking local decoding function `%s'" loc-dec)
3954 (tramp-message
3955 vec 5 "Checking local decoding command `%s' for sanity" loc-dec)
3956 (unless (zerop (tramp-call-local-coding-command
3957 loc-dec nil nil))
3958 (throw 'wont-work-local nil)))
3959 ;; Search for remote coding commands with the same format
3960 (while (and remote-commands (not found))
3961 (setq ritem (pop remote-commands))
3962 (catch 'wont-work-remote
3963 (when (equal format (nth 0 ritem))
3964 (setq rem-enc (nth 1 ritem))
3965 (setq rem-dec (nth 2 ritem))
3966 ;; Check if remote encoding and decoding commands can be
3967 ;; called remotely with null input and output. This makes
3968 ;; sure there are no syntax errors and the command is really
3969 ;; found. Note that we do not redirect stdout to /dev/null,
3970 ;; for two reasons: when checking the decoding command, we
3971 ;; actually check the output it gives. And also, when
3972 ;; redirecting "mimencode" output to /dev/null, then as root
3973 ;; it might change the permissions of /dev/null!
3974 (when (not (stringp rem-enc))
3975 (let ((name (symbol-name rem-enc)))
3976 (while (string-match (regexp-quote "-") name)
3977 (setq name (replace-match "_" nil t name)))
3978 (tramp-maybe-send-script vec (symbol-value rem-enc) name)
3979 (setq rem-enc name)))
3980 (tramp-message
3981 vec 5
3982 "Checking remote encoding command `%s' for sanity" rem-enc)
3983 (unless (tramp-send-command-and-check
3984 vec (format "%s </dev/null" rem-enc) t)
3985 (throw 'wont-work-remote nil))
3987 (when (not (stringp rem-dec))
3988 (let ((name (symbol-name rem-dec)))
3989 (while (string-match (regexp-quote "-") name)
3990 (setq name (replace-match "_" nil t name)))
3991 (tramp-maybe-send-script vec (symbol-value rem-dec) name)
3992 (setq rem-dec name)))
3993 (tramp-message
3994 vec 5
3995 "Checking remote decoding command `%s' for sanity" rem-dec)
3996 (unless (tramp-send-command-and-check
3998 (format "echo %s | %s | %s" magic rem-enc rem-dec)
4000 (throw 'wont-work-remote nil))
4002 (with-current-buffer (tramp-get-buffer vec)
4003 (goto-char (point-min))
4004 (unless (looking-at (regexp-quote magic))
4005 (throw 'wont-work-remote nil)))
4007 ;; `rem-enc' and `rem-dec' could be a string meanwhile.
4008 (setq rem-enc (nth 1 ritem))
4009 (setq rem-dec (nth 2 ritem))
4010 (setq found t)))))))
4012 ;; Did we find something?
4013 (unless found
4014 (tramp-error
4015 vec 'file-error "Couldn't find an inline transfer encoding"))
4017 ;; Set connection properties.
4018 (tramp-message vec 5 "Using local encoding `%s'" loc-enc)
4019 (tramp-set-connection-property vec "local-encoding" loc-enc)
4020 (tramp-message vec 5 "Using local decoding `%s'" loc-dec)
4021 (tramp-set-connection-property vec "local-decoding" loc-dec)
4022 (tramp-message vec 5 "Using remote encoding `%s'" rem-enc)
4023 (tramp-set-connection-property vec "remote-encoding" rem-enc)
4024 (tramp-message vec 5 "Using remote decoding `%s'" rem-dec)
4025 (tramp-set-connection-property vec "remote-decoding" rem-dec))))
4027 (defun tramp-call-local-coding-command (cmd input output)
4028 "Call the local encoding or decoding command.
4029 If CMD contains \"%s\", provide input file INPUT there in command.
4030 Otherwise, INPUT is passed via standard input.
4031 INPUT can also be nil which means `/dev/null'.
4032 OUTPUT can be a string (which specifies a filename), or t (which
4033 means standard output and thus the current buffer), or nil (which
4034 means discard it)."
4035 (tramp-compat-call-process
4036 tramp-encoding-shell
4037 (when (and input (not (string-match "%s" cmd))) input)
4038 (if (eq output t) t nil)
4040 tramp-encoding-command-switch
4041 (concat
4042 (if (string-match "%s" cmd) (format cmd input) cmd)
4043 (if (stringp output) (concat "> " output) ""))))
4045 (defconst tramp-inline-compress-commands
4046 '(("gzip" "gzip -d")
4047 ("bzip2" "bzip2 -d")
4048 ("compress" "compress -d"))
4049 "List of compress and decompress commands for inline transfer.
4050 Each item is a list that looks like this:
4052 \(COMPRESS DECOMPRESS\)
4054 COMPRESS or DECOMPRESS are strings with the respective commands.")
4056 (defun tramp-find-inline-compress (vec)
4057 "Find an inline transfer compress command that works.
4058 Goes through the list `tramp-inline-compress-commands'."
4059 (save-excursion
4060 (let ((commands tramp-inline-compress-commands)
4061 (magic "xyzzy")
4062 item compress decompress
4063 found)
4064 (while (and commands (not found))
4065 (catch 'next
4066 (setq item (pop commands)
4067 compress (nth 0 item)
4068 decompress (nth 1 item))
4069 (tramp-message
4070 vec 5
4071 "Checking local compress command `%s', `%s' for sanity"
4072 compress decompress)
4073 (unless
4074 (zerop
4075 (tramp-call-local-coding-command
4076 (format
4077 ;; Windows shells need the program file name after
4078 ;; the pipe symbol be quoted if they use forward
4079 ;; slashes as directory separators.
4080 (if (memq system-type '(windows-nt))
4081 "echo %s | \"%s\" | \"%s\""
4082 "echo %s | %s | %s")
4083 magic compress decompress) nil nil))
4084 (throw 'next nil))
4085 (tramp-message
4086 vec 5
4087 "Checking remote compress command `%s', `%s' for sanity"
4088 compress decompress)
4089 (unless (tramp-send-command-and-check
4090 vec (format "echo %s | %s | %s" magic compress decompress) t)
4091 (throw 'next nil))
4092 (setq found t)))
4094 ;; Did we find something?
4095 (if found
4096 (progn
4097 ;; Set connection properties.
4098 (tramp-message
4099 vec 5 "Using inline transfer compress command `%s'" compress)
4100 (tramp-set-connection-property vec "inline-compress" compress)
4101 (tramp-message
4102 vec 5 "Using inline transfer decompress command `%s'" decompress)
4103 (tramp-set-connection-property vec "inline-decompress" decompress))
4105 (tramp-set-connection-property vec "inline-compress" nil)
4106 (tramp-set-connection-property vec "inline-decompress" nil)
4107 (tramp-message
4108 vec 2 "Couldn't find an inline transfer compress command")))))
4110 (defun tramp-compute-multi-hops (vec)
4111 "Expands VEC according to `tramp-default-proxies-alist'.
4112 Gateway hops are already opened."
4113 (let ((target-alist `(,vec))
4114 (choices tramp-default-proxies-alist)
4115 item proxy)
4117 ;; Look for proxy hosts to be passed.
4118 (while choices
4119 (setq item (pop choices)
4120 proxy (eval (nth 2 item)))
4121 (when (and
4122 ;; host
4123 (string-match (or (eval (nth 0 item)) "")
4124 (or (tramp-file-name-host (car target-alist)) ""))
4125 ;; user
4126 (string-match (or (eval (nth 1 item)) "")
4127 (or (tramp-file-name-user (car target-alist)) "")))
4128 (if (null proxy)
4129 ;; No more hops needed.
4130 (setq choices nil)
4131 ;; Replace placeholders.
4132 (setq proxy
4133 (format-spec
4134 proxy
4135 (format-spec-make
4136 ?u (or (tramp-file-name-user (car target-alist)) "")
4137 ?h (or (tramp-file-name-host (car target-alist)) ""))))
4138 (with-parsed-tramp-file-name proxy l
4139 ;; Add the hop.
4140 (add-to-list 'target-alist l)
4141 ;; Start next search.
4142 (setq choices tramp-default-proxies-alist)))))
4144 ;; Handle gateways.
4145 (when (string-match
4146 (format
4147 "^\\(%s\\|%s\\)$" tramp-gw-tunnel-method tramp-gw-socks-method)
4148 (tramp-file-name-method (car target-alist)))
4149 (let ((gw (pop target-alist))
4150 (hop (pop target-alist)))
4151 ;; Is the method prepared for gateways?
4152 (unless (tramp-file-name-port hop)
4153 (tramp-error
4154 vec 'file-error
4155 "Connection `%s' is not supported for gateway access." hop))
4156 ;; Open the gateway connection.
4157 (add-to-list
4158 'target-alist
4159 (vector
4160 (tramp-file-name-method hop) (tramp-file-name-user hop)
4161 (tramp-compat-funcall 'tramp-gw-open-connection vec gw hop) nil))
4162 ;; For the password prompt, we need the correct values.
4163 ;; Therefore, we must remember the gateway vector. But we
4164 ;; cannot do it as connection property, because it shouldn't
4165 ;; be persistent. And we have no started process yet either.
4166 (tramp-set-file-property (car target-alist) "" "gateway" hop)))
4168 ;; Foreign and out-of-band methods are not supported for multi-hops.
4169 (when (cdr target-alist)
4170 (setq choices target-alist)
4171 (while choices
4172 (setq item (pop choices))
4173 (when
4175 (not
4176 (tramp-get-method-parameter
4177 (tramp-file-name-method item) 'tramp-login-program))
4178 (tramp-get-method-parameter
4179 (tramp-file-name-method item) 'tramp-copy-program))
4180 (tramp-error
4181 vec 'file-error
4182 "Method `%s' is not supported for multi-hops."
4183 (tramp-file-name-method item)))))
4185 ;; In case the host name is not used for the remote shell
4186 ;; command, the user could be misguided by applying a random
4187 ;; hostname.
4188 (let* ((v (car target-alist))
4189 (method (tramp-file-name-method v))
4190 (host (tramp-file-name-host v)))
4191 (unless
4193 ;; There are multi-hops.
4194 (cdr target-alist)
4195 ;; The host name is used for the remote shell command.
4196 (member
4197 '("%h") (tramp-get-method-parameter method 'tramp-login-args))
4198 ;; The host is local. We cannot use `tramp-local-host-p'
4199 ;; here, because it opens a connection as well.
4200 (string-match tramp-local-host-regexp host))
4201 (tramp-error
4202 v 'file-error
4203 "Host `%s' looks like a remote host, `%s' can only use the local host"
4204 host method)))
4206 ;; Result.
4207 target-alist))
4209 (defun tramp-maybe-open-connection (vec)
4210 "Maybe open a connection VEC.
4211 Does not do anything if a connection is already open, but re-opens the
4212 connection if a previous connection has died for some reason."
4213 (catch 'uname-changed
4214 (let ((p (tramp-get-connection-process vec))
4215 (process-name (tramp-get-connection-property vec "process-name" nil))
4216 (process-environment (copy-sequence process-environment))
4217 (pos (with-current-buffer (tramp-get-connection-buffer vec) (point))))
4219 ;; If too much time has passed since last command was sent, look
4220 ;; whether process is still alive. If it isn't, kill it. When
4221 ;; using ssh, it can sometimes happen that the remote end has
4222 ;; hung up but the local ssh client doesn't recognize this until
4223 ;; it tries to send some data to the remote end. So that's why
4224 ;; we try to send a command from time to time, then look again
4225 ;; whether the process is really alive.
4226 (condition-case nil
4227 (when (and (> (tramp-time-diff
4228 (current-time)
4229 (tramp-get-connection-property
4230 p "last-cmd-time" '(0 0 0)))
4232 p (processp p) (memq (process-status p) '(run open)))
4233 (tramp-send-command vec "echo are you awake" t t)
4234 (unless (and (memq (process-status p) '(run open))
4235 (tramp-wait-for-output p 10))
4236 ;; The error will be catched locally.
4237 (tramp-error vec 'file-error "Awake did fail")))
4238 (file-error
4239 (tramp-flush-connection-property vec)
4240 (tramp-flush-connection-property p)
4241 (delete-process p)
4242 (setq p nil)))
4244 ;; New connection must be opened.
4245 (unless (and p (processp p) (memq (process-status p) '(run open)))
4247 ;; We call `tramp-get-buffer' in order to get a debug buffer for
4248 ;; messages from the beginning.
4249 (tramp-get-buffer vec)
4250 (with-progress-reporter
4251 vec 3
4252 (if (zerop (length (tramp-file-name-user vec)))
4253 (format "Opening connection for %s using %s"
4254 (tramp-file-name-host vec)
4255 (tramp-file-name-method vec))
4256 (format "Opening connection for %s@%s using %s"
4257 (tramp-file-name-user vec)
4258 (tramp-file-name-host vec)
4259 (tramp-file-name-method vec)))
4261 ;; Start new process.
4262 (when (and p (processp p))
4263 (delete-process p))
4264 (setenv "TERM" tramp-terminal-type)
4265 (setenv "LC_ALL" "C")
4266 (setenv "PROMPT_COMMAND")
4267 (setenv "PS1" tramp-initial-end-of-output)
4268 (let* ((target-alist (tramp-compute-multi-hops vec))
4269 (process-connection-type tramp-process-connection-type)
4270 (process-adaptive-read-buffering nil)
4271 (coding-system-for-read nil)
4272 ;; This must be done in order to avoid our file name handler.
4273 (p (let ((default-directory
4274 (tramp-compat-temporary-file-directory)))
4275 (start-process
4276 (tramp-get-connection-name vec)
4277 (tramp-get-connection-buffer vec)
4278 tramp-encoding-shell))))
4280 (tramp-message
4281 vec 6 "%s" (mapconcat 'identity (process-command p) " "))
4283 ;; Check whether process is alive.
4284 (tramp-compat-set-process-query-on-exit-flag p nil)
4285 (tramp-barf-if-no-shell-prompt
4286 p 60 "Couldn't find local shell prompt %s" tramp-encoding-shell)
4288 ;; Now do all the connections as specified.
4289 (while target-alist
4290 (let* ((hop (car target-alist))
4291 (l-method (tramp-file-name-method hop))
4292 (l-user (tramp-file-name-user hop))
4293 (l-host (tramp-file-name-host hop))
4294 (l-port nil)
4295 (login-program
4296 (tramp-get-method-parameter
4297 l-method 'tramp-login-program))
4298 (login-args
4299 (tramp-get-method-parameter l-method 'tramp-login-args))
4300 (async-args
4301 (tramp-get-method-parameter l-method 'tramp-async-args))
4302 (gw-args
4303 (tramp-get-method-parameter l-method 'tramp-gw-args))
4304 (gw (tramp-get-file-property hop "" "gateway" nil))
4305 (g-method (and gw (tramp-file-name-method gw)))
4306 (g-user (and gw (tramp-file-name-user gw)))
4307 (g-host (and gw (tramp-file-name-host gw)))
4308 (command login-program)
4309 ;; We don't create the temporary file. In fact,
4310 ;; it is just a prefix for the ControlPath option
4311 ;; of ssh; the real temporary file has another
4312 ;; name, and it is created and protected by ssh.
4313 ;; It is also removed by ssh when the connection
4314 ;; is closed.
4315 (tmpfile
4316 (tramp-set-connection-property
4317 p "temp-file"
4318 (make-temp-name
4319 (expand-file-name
4320 tramp-temp-name-prefix
4321 (tramp-compat-temporary-file-directory)))))
4322 spec)
4324 ;; Add arguments for asynchrononous processes.
4325 (when (and process-name async-args)
4326 (setq login-args (append async-args login-args)))
4328 ;; Add gateway arguments if necessary.
4329 (when (and gw gw-args)
4330 (setq login-args (append gw-args login-args)))
4332 ;; Check for port number. Until now, there's no need
4333 ;; for handling like method, user, host.
4334 (when (string-match tramp-host-with-port-regexp l-host)
4335 (setq l-port (match-string 2 l-host)
4336 l-host (match-string 1 l-host)))
4338 ;; Set variables for computing the prompt for reading
4339 ;; password. They can also be derived from a gateway.
4340 (setq tramp-current-method (or g-method l-method)
4341 tramp-current-user (or g-user l-user)
4342 tramp-current-host (or g-host l-host))
4344 ;; Replace login-args place holders.
4345 (setq
4346 l-host (or l-host "")
4347 l-user (or l-user "")
4348 l-port (or l-port "")
4349 spec (format-spec-make
4350 ?h l-host ?u l-user ?p l-port ?t tmpfile)
4351 command
4352 (concat
4353 ;; We do not want to see the trailing local prompt in
4354 ;; `start-file-process'.
4355 (unless (memq system-type '(windows-nt)) "exec ")
4356 command " "
4357 (mapconcat
4358 (lambda (x)
4359 (setq x (mapcar (lambda (y) (format-spec y spec)) x))
4360 (unless (member "" x) (mapconcat 'identity x " ")))
4361 login-args " ")
4362 ;; Local shell could be a Windows COMSPEC. It
4363 ;; doesn't know the ";" syntax, but we must exit
4364 ;; always for `start-file-process'. "exec" does not
4365 ;; work either.
4366 (if (memq system-type '(windows-nt)) " && exit || exit")))
4368 ;; Send the command.
4369 (tramp-message vec 3 "Sending command `%s'" command)
4370 (tramp-send-command vec command t t)
4371 (tramp-process-actions p vec pos tramp-actions-before-shell 60)
4372 (tramp-message
4373 vec 3 "Found remote shell prompt on `%s'" l-host))
4374 ;; Next hop.
4375 (setq target-alist (cdr target-alist)))
4377 ;; Make initial shell settings.
4378 (tramp-open-connection-setup-interactive-shell p vec)))))))
4380 (defun tramp-send-command (vec command &optional neveropen nooutput)
4381 "Send the COMMAND to connection VEC.
4382 Erases temporary buffer before sending the command. If optional
4383 arg NEVEROPEN is non-nil, never try to open the connection. This
4384 is meant to be used from `tramp-maybe-open-connection' only. The
4385 function waits for output unless NOOUTPUT is set."
4386 (unless neveropen (tramp-maybe-open-connection vec))
4387 (let ((p (tramp-get-connection-process vec)))
4388 (when (tramp-get-connection-property p "remote-echo" nil)
4389 ;; We mark the command string that it can be erased in the output buffer.
4390 (tramp-set-connection-property p "check-remote-echo" t)
4391 (setq command (format "%s%s%s" tramp-echo-mark command tramp-echo-mark)))
4392 (when (string-match "<<'EOF'" command)
4393 ;; Unset $PS1 when using here documents, in order to avoid
4394 ;; multiple prompts.
4395 (setq command (concat "(PS1= ; " command "\n)")))
4396 ;; Send the command.
4397 (tramp-message vec 6 "%s" command)
4398 (tramp-send-string vec command)
4399 (unless nooutput (tramp-wait-for-output p))))
4401 (defun tramp-wait-for-output (proc &optional timeout)
4402 "Wait for output from remote command."
4403 (unless (buffer-live-p (process-buffer proc))
4404 (delete-process proc)
4405 (tramp-error proc 'file-error "Process `%s' not available, try again" proc))
4406 (with-current-buffer (process-buffer proc)
4407 (let* (;; Initially, `tramp-end-of-output' is "#$ ". There might
4408 ;; be leading escape sequences, which must be ignored.
4409 (regexp (format "[^#$\n]*%s\r?$" (regexp-quote tramp-end-of-output)))
4410 ;; Sometimes, the commands do not return a newline but a
4411 ;; null byte before the shell prompt, for example "git
4412 ;; ls-files -c -z ...".
4413 (regexp1 (format "\\(^\\|\000\\)%s" regexp))
4414 (found (tramp-wait-for-regexp proc timeout regexp1)))
4415 (if found
4416 (let (buffer-read-only)
4417 ;; A simple-minded busybox has sent " ^H" sequences.
4418 ;; Delete them.
4419 (goto-char (point-min))
4420 (when (re-search-forward "^\\(.\b\\)+$" (point-at-eol) t)
4421 (forward-line 1)
4422 (delete-region (point-min) (point)))
4423 ;; Delete the prompt.
4424 (goto-char (point-max))
4425 (re-search-backward regexp nil t)
4426 (delete-region (point) (point-max)))
4427 (if timeout
4428 (tramp-error
4429 proc 'file-error
4430 "[[Remote prompt `%s' not found in %d secs]]"
4431 tramp-end-of-output timeout)
4432 (tramp-error
4433 proc 'file-error
4434 "[[Remote prompt `%s' not found]]" tramp-end-of-output)))
4435 ;; Return value is whether end-of-output sentinel was found.
4436 found)))
4438 (defun tramp-send-command-and-check
4439 (vec command &optional subshell dont-suppress-err)
4440 "Run COMMAND and check its exit status.
4441 Sends `echo $?' along with the COMMAND for checking the exit status. If
4442 COMMAND is nil, just sends `echo $?'. Returns the exit status found.
4444 If the optional argument SUBSHELL is non-nil, the command is
4445 executed in a subshell, ie surrounded by parentheses. If
4446 DONT-SUPPRESS-ERR is non-nil, stderr won't be sent to /dev/null."
4447 (tramp-send-command
4449 (concat (if subshell "( " "")
4450 command
4451 (if command (if dont-suppress-err "; " " 2>/dev/null; ") "")
4452 "echo tramp_exit_status $?"
4453 (if subshell " )" "")))
4454 (with-current-buffer (tramp-get-connection-buffer vec)
4455 (goto-char (point-max))
4456 (unless (re-search-backward "tramp_exit_status [0-9]+" nil t)
4457 (tramp-error
4458 vec 'file-error "Couldn't find exit status of `%s'" command))
4459 (skip-chars-forward "^ ")
4460 (prog1
4461 (zerop (read (current-buffer)))
4462 (let (buffer-read-only)
4463 (delete-region (match-beginning 0) (point-max))))))
4465 (defun tramp-barf-unless-okay (vec command fmt &rest args)
4466 "Run COMMAND, check exit status, throw error if exit status not okay.
4467 Similar to `tramp-send-command-and-check' but accepts two more arguments
4468 FMT and ARGS which are passed to `error'."
4469 (unless (tramp-send-command-and-check vec command)
4470 (apply 'tramp-error vec 'file-error fmt args)))
4472 (defun tramp-send-command-and-read (vec command)
4473 "Run COMMAND and return the output, which must be a Lisp expression.
4474 In case there is no valid Lisp expression, it raises an error"
4475 (tramp-barf-unless-okay vec command "`%s' returns with error" command)
4476 (with-current-buffer (tramp-get-connection-buffer vec)
4477 ;; Read the expression.
4478 (goto-char (point-min))
4479 (condition-case nil
4480 (prog1 (read (current-buffer))
4481 ;; Error handling.
4482 (when (re-search-forward "\\S-" (point-at-eol) t)
4483 (error nil)))
4484 (error (tramp-error
4485 vec 'file-error
4486 "`%s' does not return a valid Lisp expression: `%s'"
4487 command (buffer-string))))))
4489 (defun tramp-convert-file-attributes (vec attr)
4490 "Convert file-attributes ATTR generated by perl script, stat or ls.
4491 Convert file mode bits to string and set virtual device number.
4492 Return ATTR."
4493 (when attr
4494 ;; Convert last access time.
4495 (unless (listp (nth 4 attr))
4496 (setcar (nthcdr 4 attr)
4497 (list (floor (nth 4 attr) 65536)
4498 (floor (mod (nth 4 attr) 65536)))))
4499 ;; Convert last modification time.
4500 (unless (listp (nth 5 attr))
4501 (setcar (nthcdr 5 attr)
4502 (list (floor (nth 5 attr) 65536)
4503 (floor (mod (nth 5 attr) 65536)))))
4504 ;; Convert last status change time.
4505 (unless (listp (nth 6 attr))
4506 (setcar (nthcdr 6 attr)
4507 (list (floor (nth 6 attr) 65536)
4508 (floor (mod (nth 6 attr) 65536)))))
4509 ;; Convert file size.
4510 (when (< (nth 7 attr) 0)
4511 (setcar (nthcdr 7 attr) -1))
4512 (when (and (floatp (nth 7 attr))
4513 (<= (nth 7 attr) (tramp-compat-most-positive-fixnum)))
4514 (setcar (nthcdr 7 attr) (round (nth 7 attr))))
4515 ;; Convert file mode bits to string.
4516 (unless (stringp (nth 8 attr))
4517 (setcar (nthcdr 8 attr) (tramp-file-mode-from-int (nth 8 attr)))
4518 (when (stringp (car attr))
4519 (aset (nth 8 attr) 0 ?l)))
4520 ;; Convert directory indication bit.
4521 (when (string-match "^d" (nth 8 attr))
4522 (setcar attr t))
4523 ;; Convert symlink from `tramp-do-file-attributes-with-stat'.
4524 (when (consp (car attr))
4525 (if (and (stringp (caar attr))
4526 (string-match ".+ -> .\\(.+\\)." (caar attr)))
4527 (setcar attr (match-string 1 (caar attr)))
4528 (setcar attr nil)))
4529 ;; Set file's gid change bit.
4530 (setcar (nthcdr 9 attr)
4531 (if (numberp (nth 3 attr))
4532 (not (= (nth 3 attr)
4533 (tramp-get-remote-gid vec 'integer)))
4534 (not (string-equal
4535 (nth 3 attr)
4536 (tramp-get-remote-gid vec 'string)))))
4537 ;; Convert inode.
4538 (unless (listp (nth 10 attr))
4539 (setcar (nthcdr 10 attr)
4540 (condition-case nil
4541 (cons (floor (nth 10 attr) 65536)
4542 (floor (mod (nth 10 attr) 65536)))
4543 ;; Inodes can be incredible huge. We must hide this.
4544 (error (tramp-get-inode vec)))))
4545 ;; Set virtual device number.
4546 (setcar (nthcdr 11 attr)
4547 (tramp-get-device vec))
4548 attr))
4550 (defun tramp-check-cached-permissions (vec access)
4551 "Check `file-attributes' caches for VEC.
4552 Return t if according to the cache access type ACCESS is known to
4553 be granted."
4554 (let ((result nil)
4555 (offset (cond
4556 ((eq ?r access) 1)
4557 ((eq ?w access) 2)
4558 ((eq ?x access) 3))))
4559 (dolist (suffix '("string" "integer") result)
4560 (setq
4561 result
4563 result
4564 (let ((file-attr
4565 (tramp-get-file-property
4566 vec (tramp-file-name-localname vec)
4567 (concat "file-attributes-" suffix) nil))
4568 (remote-uid
4569 (tramp-get-connection-property
4570 vec (concat "uid-" suffix) nil))
4571 (remote-gid
4572 (tramp-get-connection-property
4573 vec (concat "gid-" suffix) nil)))
4574 (and
4575 file-attr
4577 ;; Not a symlink
4578 (eq t (car file-attr))
4579 (null (car file-attr)))
4581 ;; World accessible.
4582 (eq access (aref (nth 8 file-attr) (+ offset 6)))
4583 ;; User accessible and owned by user.
4584 (and
4585 (eq access (aref (nth 8 file-attr) offset))
4586 (equal remote-uid (nth 2 file-attr)))
4587 ;; Group accessible and owned by user's
4588 ;; principal group.
4589 (and
4590 (eq access (aref (nth 8 file-attr) (+ offset 3)))
4591 (equal remote-gid (nth 3 file-attr)))))))))))
4593 (defun tramp-file-mode-from-int (mode)
4594 "Turn an integer representing a file mode into an ls(1)-like string."
4595 (let ((type (cdr
4596 (assoc (logand (lsh mode -12) 15) tramp-file-mode-type-map)))
4597 (user (logand (lsh mode -6) 7))
4598 (group (logand (lsh mode -3) 7))
4599 (other (logand (lsh mode -0) 7))
4600 (suid (> (logand (lsh mode -9) 4) 0))
4601 (sgid (> (logand (lsh mode -9) 2) 0))
4602 (sticky (> (logand (lsh mode -9) 1) 0)))
4603 (setq user (tramp-file-mode-permissions user suid "s"))
4604 (setq group (tramp-file-mode-permissions group sgid "s"))
4605 (setq other (tramp-file-mode-permissions other sticky "t"))
4606 (concat type user group other)))
4608 (defun tramp-file-mode-permissions (perm suid suid-text)
4609 "Convert a permission bitset into a string.
4610 This is used internally by `tramp-file-mode-from-int'."
4611 (let ((r (> (logand perm 4) 0))
4612 (w (> (logand perm 2) 0))
4613 (x (> (logand perm 1) 0)))
4614 (concat (or (and r "r") "-")
4615 (or (and w "w") "-")
4616 (or (and suid x suid-text) ; suid, execute
4617 (and suid (upcase suid-text)) ; suid, !execute
4618 (and x "x") "-")))) ; !suid
4620 (defun tramp-shell-case-fold (string)
4621 "Converts STRING to shell glob pattern which ignores case."
4622 (mapconcat
4623 (lambda (c)
4624 (if (equal (downcase c) (upcase c))
4625 (vector c)
4626 (format "[%c%c]" (downcase c) (upcase c))))
4627 string
4628 ""))
4630 (defun tramp-make-copy-program-file-name (vec)
4631 "Create a file name suitable to be passed to `rcp' and workalikes."
4632 (let ((user (tramp-file-name-user vec))
4633 (host (tramp-file-name-real-host vec))
4634 (localname (tramp-shell-quote-argument
4635 (tramp-file-name-localname vec))))
4636 (if (not (zerop (length user)))
4637 (format "%s@%s:%s" user host localname)
4638 (format "%s:%s" host localname))))
4640 (defun tramp-method-out-of-band-p (vec size)
4641 "Return t if this is an out-of-band method, nil otherwise."
4642 (and
4643 ;; It shall be an out-of-band method.
4644 (tramp-get-method-parameter (tramp-file-name-method vec) 'tramp-copy-program)
4645 ;; Either the file size is large enough, or (in rare cases) there
4646 ;; does not exist a remote encoding.
4647 (or (null tramp-copy-size-limit)
4648 (> size tramp-copy-size-limit)
4649 (null (tramp-get-inline-coding vec "remote-encoding" size)))))
4651 ;; Variables local to connection.
4653 (defun tramp-get-remote-path (vec)
4654 (with-connection-property
4655 ;; When `tramp-own-remote-path' is in `tramp-remote-path', we
4656 ;; cache the result for the session only. Otherwise, the result
4657 ;; is cached persistently.
4658 (if (memq 'tramp-own-remote-path tramp-remote-path)
4659 (tramp-get-connection-process vec)
4660 vec)
4661 "remote-path"
4662 (let* ((remote-path (copy-tree tramp-remote-path))
4663 (elt1 (memq 'tramp-default-remote-path remote-path))
4664 (elt2 (memq 'tramp-own-remote-path remote-path))
4665 (default-remote-path
4666 (when elt1
4668 (tramp-send-command-and-read
4670 "x=`getconf PATH 2>/dev/null` && echo \\\"$x\\\" || echo nil")
4671 ;; Default if "getconf" is not available.
4672 (progn
4673 (tramp-message
4674 vec 3
4675 "`getconf PATH' not successful, using default value \"%s\"."
4676 "/bin:/usr/bin")
4677 "/bin:/usr/bin"))))
4678 (own-remote-path
4679 (when elt2
4680 (condition-case nil
4681 (tramp-send-command-and-read vec "echo \\\"$PATH\\\"")
4682 (error
4683 (tramp-message
4684 vec 3 "$PATH not set, ignoring `tramp-own-remote-path'.")
4685 nil)))))
4687 ;; Replace place holder `tramp-default-remote-path'.
4688 (when elt1
4689 (setcdr elt1
4690 (append
4691 (tramp-compat-split-string default-remote-path ":")
4692 (cdr elt1)))
4693 (setq remote-path (delq 'tramp-default-remote-path remote-path)))
4695 ;; Replace place holder `tramp-own-remote-path'.
4696 (when elt2
4697 (setcdr elt2
4698 (append
4699 (tramp-compat-split-string own-remote-path ":")
4700 (cdr elt2)))
4701 (setq remote-path (delq 'tramp-own-remote-path remote-path)))
4703 ;; Remove double entries.
4704 (setq elt1 remote-path)
4705 (while (consp elt1)
4706 (while (and (car elt1) (setq elt2 (member (car elt1) (cdr elt1))))
4707 (setcar elt2 nil))
4708 (setq elt1 (cdr elt1)))
4710 ;; Remove non-existing directories.
4711 (delq
4713 (mapcar
4714 (lambda (x)
4715 (and
4716 (stringp x)
4717 (file-directory-p
4718 (tramp-make-tramp-file-name
4719 (tramp-file-name-method vec)
4720 (tramp-file-name-user vec)
4721 (tramp-file-name-host vec)
4724 remote-path)))))
4726 (defun tramp-get-remote-tmpdir (vec)
4727 (with-connection-property vec "tmp-directory"
4728 (let ((dir (tramp-shell-quote-argument "/tmp")))
4729 (if (and (tramp-send-command-and-check
4730 vec (format "%s -d %s" (tramp-get-test-command vec) dir))
4731 (tramp-send-command-and-check
4732 vec (format "%s -w %s" (tramp-get-test-command vec) dir)))
4734 (tramp-error vec 'file-error "Directory %s not accessible" dir)))))
4736 (defun tramp-get-ls-command (vec)
4737 (with-connection-property vec "ls"
4738 (tramp-message vec 5 "Finding a suitable `ls' command")
4740 (catch 'ls-found
4741 (dolist (cmd '("ls" "gnuls" "gls"))
4742 (let ((dl (tramp-get-remote-path vec))
4743 result)
4744 (while (and dl (setq result (tramp-find-executable vec cmd dl t t)))
4745 ;; Check parameters. On busybox, "ls" output coloring is
4746 ;; enabled by default sometimes. So we try to disable it
4747 ;; when possible. $LS_COLORING is not supported there.
4748 ;; Some "ls" versions are sensible wrt the order of
4749 ;; arguments, they fail when "-al" is after the
4750 ;; "--color=never" argument (for example on FreeBSD).
4751 (when (tramp-send-command-and-check
4752 vec (format "%s -lnd /" result))
4753 (when (tramp-send-command-and-check
4754 vec (format
4755 "%s --color=never -al /dev/null" result))
4756 (setq result (concat result " --color=never")))
4757 (throw 'ls-found result))
4758 (setq dl (cdr dl))))))
4759 (tramp-error vec 'file-error "Couldn't find a proper `ls' command"))))
4761 (defun tramp-get-ls-command-with-dired (vec)
4762 (save-match-data
4763 (with-connection-property vec "ls-dired"
4764 (tramp-message vec 5 "Checking, whether `ls --dired' works")
4765 ;; Some "ls" versions are sensible wrt the order of arguments,
4766 ;; they fail when "-al" is after the "--dired" argument (for
4767 ;; example on FreeBSD).
4768 (tramp-send-command-and-check
4769 vec (format "%s --dired -al /dev/null" (tramp-get-ls-command vec))))))
4771 (defun tramp-get-test-command (vec)
4772 (with-connection-property vec "test"
4773 (tramp-message vec 5 "Finding a suitable `test' command")
4774 (if (tramp-send-command-and-check vec "test 0")
4775 "test"
4776 (tramp-find-executable vec "test" (tramp-get-remote-path vec)))))
4778 (defun tramp-get-test-nt-command (vec)
4779 ;; Does `test A -nt B' work? Use abominable `find' construct if it
4780 ;; doesn't. BSD/OS 4.0 wants the parentheses around the command,
4781 ;; for otherwise the shell crashes.
4782 (with-connection-property vec "test-nt"
4784 (progn
4785 (tramp-send-command
4786 vec (format "( %s / -nt / )" (tramp-get-test-command vec)))
4787 (with-current-buffer (tramp-get-buffer vec)
4788 (goto-char (point-min))
4789 (when (looking-at (regexp-quote tramp-end-of-output))
4790 (format "%s %%s -nt %%s" (tramp-get-test-command vec)))))
4791 (progn
4792 (tramp-send-command
4794 (format
4795 "tramp_test_nt () {\n%s -n \"`find $1 -prune -newer $2 -print`\"\n}"
4796 (tramp-get-test-command vec)))
4797 "tramp_test_nt %s %s"))))
4799 (defun tramp-get-file-exists-command (vec)
4800 (with-connection-property vec "file-exists"
4801 (tramp-message vec 5 "Finding command to check if file exists")
4802 (tramp-find-file-exists-command vec)))
4804 (defun tramp-get-remote-ln (vec)
4805 (with-connection-property vec "ln"
4806 (tramp-message vec 5 "Finding a suitable `ln' command")
4807 (tramp-find-executable vec "ln" (tramp-get-remote-path vec))))
4809 (defun tramp-get-remote-perl (vec)
4810 (with-connection-property vec "perl"
4811 (tramp-message vec 5 "Finding a suitable `perl' command")
4812 (let ((result
4813 (or (tramp-find-executable vec "perl5" (tramp-get-remote-path vec))
4814 (tramp-find-executable
4815 vec "perl" (tramp-get-remote-path vec)))))
4816 ;; We must check also for some Perl modules.
4817 (when result
4818 (with-connection-property vec "perl-file-spec"
4819 (tramp-send-command-and-check
4820 vec (format "%s -e 'use File::Spec;'" result)))
4821 (with-connection-property vec "perl-cwd-realpath"
4822 (tramp-send-command-and-check
4823 vec (format "%s -e 'use Cwd \"realpath\";'" result))))
4824 result)))
4826 (defun tramp-get-remote-stat (vec)
4827 (with-connection-property vec "stat"
4828 (tramp-message vec 5 "Finding a suitable `stat' command")
4829 (let ((result (tramp-find-executable
4830 vec "stat" (tramp-get-remote-path vec)))
4831 tmp)
4832 ;; Check whether stat(1) returns usable syntax. %s does not
4833 ;; work on older AIX systems.
4834 (when result
4835 (setq tmp
4836 ;; We don't want to display an error message.
4837 (tramp-compat-with-temp-message (or (current-message) "")
4838 (ignore-errors
4839 (tramp-send-command-and-read
4840 vec (format "%s -c '(\"%%N\" %%s)' /" result)))))
4841 (unless (and (listp tmp) (stringp (car tmp))
4842 (string-match "^./.$" (car tmp))
4843 (integerp (cadr tmp)))
4844 (setq result nil)))
4845 result)))
4847 (defun tramp-get-remote-readlink (vec)
4848 (with-connection-property vec "readlink"
4849 (tramp-message vec 5 "Finding a suitable `readlink' command")
4850 (let ((result (tramp-find-executable
4851 vec "readlink" (tramp-get-remote-path vec))))
4852 (when (and result
4853 ;; We don't want to display an error message.
4854 (tramp-compat-with-temp-message (or (current-message) "")
4855 (ignore-errors
4856 (tramp-send-command-and-check
4857 vec (format "%s --canonicalize-missing /" result)))))
4858 result))))
4860 (defun tramp-get-remote-trash (vec)
4861 (with-connection-property vec "trash"
4862 (tramp-message vec 5 "Finding a suitable `trash' command")
4863 (tramp-find-executable vec "trash" (tramp-get-remote-path vec))))
4865 (defun tramp-get-remote-id (vec)
4866 (with-connection-property vec "id"
4867 (tramp-message vec 5 "Finding POSIX `id' command")
4869 (catch 'id-found
4870 (let ((dl (tramp-get-remote-path vec))
4871 result)
4872 (while (and dl (setq result (tramp-find-executable vec "id" dl t t)))
4873 ;; Check POSIX parameter.
4874 (when (tramp-send-command-and-check vec (format "%s -u" result))
4875 (throw 'id-found result))
4876 (setq dl (cdr dl)))))
4877 (tramp-error vec 'file-error "Couldn't find a POSIX `id' command"))))
4879 (defun tramp-get-remote-uid (vec id-format)
4880 (with-connection-property vec (format "uid-%s" id-format)
4881 (let ((res (tramp-send-command-and-read
4883 (format "%s -u%s %s"
4884 (tramp-get-remote-id vec)
4885 (if (equal id-format 'integer) "" "n")
4886 (if (equal id-format 'integer)
4887 "" "| sed -e s/^/\\\"/ -e s/\$/\\\"/")))))
4888 ;; The command might not always return a number.
4889 (if (and (equal id-format 'integer) (not (integerp res))) -1 res))))
4891 (defun tramp-get-remote-gid (vec id-format)
4892 (with-connection-property vec (format "gid-%s" id-format)
4893 (let ((res (tramp-send-command-and-read
4895 (format "%s -g%s %s"
4896 (tramp-get-remote-id vec)
4897 (if (equal id-format 'integer) "" "n")
4898 (if (equal id-format 'integer)
4899 "" "| sed -e s/^/\\\"/ -e s/\$/\\\"/")))))
4900 ;; The command might not always return a number.
4901 (if (and (equal id-format 'integer) (not (integerp res))) -1 res))))
4903 (defun tramp-get-local-uid (id-format)
4904 (if (equal id-format 'integer) (user-uid) (user-login-name)))
4906 (defun tramp-get-local-gid (id-format)
4907 (nth 3 (tramp-compat-file-attributes "~/" id-format)))
4909 ;; Some predefined connection properties.
4910 (defun tramp-get-inline-compress (vec prop size)
4911 "Return the compress command related to PROP.
4912 PROP is either `inline-compress' or `inline-decompress'. SIZE is
4913 the length of the file to be compressed.
4915 If no corresponding command is found, nil is returned."
4916 (when (and (integerp tramp-inline-compress-start-size)
4917 (> size tramp-inline-compress-start-size))
4918 (with-connection-property vec prop
4919 (tramp-find-inline-compress vec)
4920 (tramp-get-connection-property vec prop nil))))
4922 (defun tramp-get-inline-coding (vec prop size)
4923 "Return the coding command related to PROP.
4924 PROP is either `remote-encoding', `remode-decoding',
4925 `local-encoding' or `local-decoding'.
4927 SIZE is the length of the file to be coded. Depending on SIZE,
4928 compression might be applied.
4930 If no corresponding command is found, nil is returned.
4931 Otherwise, either a string is returned which contains a `%s' mark
4932 to be used for the respective input or output file; or a Lisp
4933 function cell is returned to be applied on a buffer."
4934 ;; We must catch the errors, because we want to return `nil', when
4935 ;; no inline coding is found.
4936 (ignore-errors
4937 (let ((coding
4938 (with-connection-property vec prop
4939 (tramp-find-inline-encoding vec)
4940 (tramp-get-connection-property vec prop nil)))
4941 (prop1 (if (string-match "encoding" prop)
4942 "inline-compress" "inline-decompress"))
4943 compress)
4944 ;; The connection property might have been cached. So we must
4945 ;; send the script to the remote side - maybe.
4946 (when (and coding (symbolp coding) (string-match "remote" prop))
4947 (let ((name (symbol-name coding)))
4948 (while (string-match (regexp-quote "-") name)
4949 (setq name (replace-match "_" nil t name)))
4950 (tramp-maybe-send-script vec (symbol-value coding) name)
4951 (setq coding name)))
4952 (when coding
4953 ;; Check for the `compress' command.
4954 (setq compress (tramp-get-inline-compress vec prop1 size))
4955 ;; Return the value.
4956 (cond
4957 ((and compress (symbolp coding))
4958 (if (string-match "decompress" prop1)
4959 `(lambda (beg end)
4960 (,coding beg end)
4961 (let ((coding-system-for-write 'binary)
4962 (coding-system-for-read 'binary))
4963 (apply
4964 'call-process-region (point-min) (point-max)
4965 (car (split-string ,compress)) t t nil
4966 (cdr (split-string ,compress)))))
4967 `(lambda (beg end)
4968 (let ((coding-system-for-write 'binary)
4969 (coding-system-for-read 'binary))
4970 (apply
4971 'call-process-region beg end
4972 (car (split-string ,compress)) t t nil
4973 (cdr (split-string ,compress))))
4974 (,coding (point-min) (point-max)))))
4975 ((symbolp coding)
4976 coding)
4977 ((and compress (string-match "decoding" prop))
4978 (format
4979 ;; Windows shells need the program file name after
4980 ;; the pipe symbol be quoted if they use forward
4981 ;; slashes as directory separators.
4982 (if (and (string-match "local" prop)
4983 (memq system-type '(windows-nt)))
4984 "(%s | \"%s\" >%%s)"
4985 "(%s | %s >%%s)")
4986 coding compress))
4987 (compress
4988 (format
4989 ;; Windows shells need the program file name after
4990 ;; the pipe symbol be quoted if they use forward
4991 ;; slashes as directory separators.
4992 (if (and (string-match "local" prop)
4993 (memq system-type '(windows-nt)))
4994 "(%s <%%s | \"%s\")"
4995 "(%s <%%s | %s)")
4996 compress coding))
4997 ((string-match "decoding" prop)
4998 (format "%s >%%s" coding))
5000 (format "%s <%%s" coding)))))))
5002 ;;; Integration of eshell.el:
5004 (eval-when-compile
5005 (defvar eshell-path-env))
5007 ;; eshell.el keeps the path in `eshell-path-env'. We must change it
5008 ;; when `default-directory' points to another host.
5009 (defun tramp-eshell-directory-change ()
5010 "Set `eshell-path-env' to $PATH of the host related to `default-directory'."
5011 (setq eshell-path-env
5012 (if (file-remote-p default-directory)
5013 (with-parsed-tramp-file-name default-directory nil
5014 (mapconcat
5015 'identity
5016 (tramp-get-remote-path v)
5017 ":"))
5018 (getenv "PATH"))))
5020 (eval-after-load "esh-util"
5021 '(progn
5022 (tramp-eshell-directory-change)
5023 (add-hook 'eshell-directory-change-hook
5024 'tramp-eshell-directory-change)
5025 (add-hook 'tramp-unload-hook
5026 (lambda ()
5027 (remove-hook 'eshell-directory-change-hook
5028 'tramp-eshell-directory-change)))))
5030 (add-hook 'tramp-unload-hook
5031 (lambda ()
5032 (unload-feature 'tramp-sh 'force)))
5034 (provide 'tramp-sh)
5036 ;;; TODO:
5038 ;; * Don't use globbing for directories with many files, as this is
5039 ;; likely to produce long command lines, and some shells choke on
5040 ;; long command lines.
5041 ;; * Make it work for different encodings, and for different file name
5042 ;; encodings, too. (Daniel Pittman)
5043 ;; * Don't search for perl5 and perl. Instead, only search for perl and
5044 ;; then look if it's the right version (with `perl -v').
5045 ;; * When editing a remote CVS controlled file as a different user, VC
5046 ;; gets confused about the file locking status. Try to find out why
5047 ;; the workaround doesn't work.
5048 ;; * Allow out-of-band methods as _last_ multi-hop. Open a connection
5049 ;; until the last but one hop via `start-file-process'. Apply it
5050 ;; also for ftp and smb.
5051 ;; * WIBNI if we had a command "trampclient"? If I was editing in
5052 ;; some shell with root priviledges, it would be nice if I could
5053 ;; just call
5054 ;; trampclient filename.c
5055 ;; as an editor, and the _current_ shell would connect to an Emacs
5056 ;; server and would be used in an existing non-priviledged Emacs
5057 ;; session for doing the editing in question.
5058 ;; That way, I need not tell Emacs my password again and be afraid
5059 ;; that it makes it into core dumps or other ugly stuff (I had Emacs
5060 ;; once display a just typed password in the context of a keyboard
5061 ;; sequence prompt for a question immediately following in a shell
5062 ;; script run within Emacs -- nasty).
5063 ;; And if I have some ssh session running to a different computer,
5064 ;; having the possibility of passing a local file there to a local
5065 ;; Emacs session (in case I can arrange for a connection back) would
5066 ;; be nice.
5067 ;; Likely the corresponding Tramp server should not allow the
5068 ;; equivalent of the emacsclient -eval option in order to make this
5069 ;; reasonably unproblematic. And maybe trampclient should have some
5070 ;; way of passing credentials, like by using an SSL socket or
5071 ;; something. (David Kastrup)
5072 ;; * Reconnect directly to a compliant shell without first going
5073 ;; through the user's default shell. (Pete Forman)
5074 ;; * How can I interrupt the remote process with a signal
5075 ;; (interrupt-process seems not to work)? (Markus Triska)
5076 ;; * Avoid the local shell entirely for starting remote processes. If
5077 ;; so, I think even a signal, when delivered directly to the local
5078 ;; SSH instance, would correctly be propagated to the remote process
5079 ;; automatically; possibly SSH would have to be started with
5080 ;; "-t". (Markus Triska)
5081 ;; * It makes me wonder if tramp couldn't fall back to ssh when scp
5082 ;; isn't on the remote host. (Mark A. Hershberger)
5083 ;; * Use lsh instead of ssh. (Alfred M. Szmidt)
5084 ;; * Optimize out-of-band copying when both methods are scp-like (not
5085 ;; rsync).
5086 ;; * Keep a second connection open for out-of-band methods like scp or
5087 ;; rsync.
5088 ;; * Try telnet+curl as new method. It might be useful for busybox,
5089 ;; without built-in uuencode/uudecode.
5091 ;;; tramp-sh.el ends here