1 ;;; tramp.el --- Transparent Remote Access, Multiple Protocol
3 ;; Copyright (C) 1998-2011 Free Software Foundation, Inc.
5 ;; Author: Kai Großjohann <kai.grossjohann@gmx.net>
6 ;; Michael Albinus <michael.albinus@gmx.de>
7 ;; Keywords: comm, processes
10 ;; This file is part of GNU Emacs.
12 ;; GNU Emacs is free software: you can redistribute it and/or modify
13 ;; it under the terms of the GNU General Public License as published by
14 ;; the Free Software Foundation, either version 3 of the License, or
15 ;; (at your option) any later version.
17 ;; GNU Emacs is distributed in the hope that it will be useful,
18 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
19 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 ;; GNU General Public License for more details.
22 ;; You should have received a copy of the GNU General Public License
23 ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
27 ;; This package provides remote file editing, similar to ange-ftp.
28 ;; The difference is that ange-ftp uses FTP to transfer files between
29 ;; the local and the remote host, whereas tramp.el uses a combination
30 ;; of rsh and rcp or other work-alike programs, such as ssh/scp.
32 ;; For more detailed instructions, please see the info file.
37 ;; This package only works for Emacs 22.1 and higher, and for XEmacs 21.4
38 ;; and higher. For XEmacs 21, you need the package `fsf-compat' for
39 ;; the `with-timeout' macro.
41 ;; Also see the todo list at the bottom of this file.
43 ;; The current version of Tramp can be retrieved from the following URL:
44 ;; http://ftp.gnu.org/gnu/tramp/
46 ;; There's a mailing list for this, as well. Its name is:
47 ;; tramp-devel@gnu.org
48 ;; You can use the Web to subscribe, under the following URL:
49 ;; http://lists.gnu.org/mailman/listinfo/tramp-devel
51 ;; For the adventurous, the current development sources are available
52 ;; via CVS. You can find instructions about this at the following URL:
53 ;; http://savannah.gnu.org/projects/tramp/
54 ;; Click on "CVS" in the navigation bar near the top.
56 ;; Don't forget to put on your asbestos longjohns, first!
60 (require 'tramp-compat
)
62 ;;; User Customizable Internal Variables:
65 "Edit remote files with a combination of rsh and rcp or similar programs."
70 ;; Maybe we need once a real Tramp mode, with key bindings etc.
72 (defcustom tramp-mode t
73 "*Whether Tramp is enabled.
74 If it is set to nil, all remote file names are used literally."
78 (defcustom tramp-verbose
3
79 "*Verbosity level for Tramp messages.
80 Any level x includes messages for all levels 1 .. x-1. The levels are
82 0 silent (no tramp messages at all)
85 3 connection to remote hosts (default level)
88 6 sent and received strings
90 8 connection properties
98 (when (boundp 'backup-directory-alist
)
99 (defcustom tramp-backup-directory-alist nil
100 "Alist of filename patterns and backup directory names.
101 Each element looks like (REGEXP . DIRECTORY), with the same meaning like
102 in `backup-directory-alist'. If a Tramp file is backed up, and DIRECTORY
103 is a local file name, the backup directory is prepended with Tramp file
104 name prefix \(method, user, host\) of file.
106 \(setq tramp-backup-directory-alist backup-directory-alist\)
108 gives the same backup policy for Tramp files on their hosts like the
109 policy for local files."
111 :type
'(repeat (cons (regexp :tag
"Regexp matching filename")
112 (directory :tag
"Backup directory name"))))))
114 ;; XEmacs case. We cannot check for `bkup-backup-directory-info', because
115 ;; the package "backup-dir" might not be loaded yet.
117 (when (featurep 'xemacs
)
118 (defcustom tramp-bkup-backup-directory-info nil
119 "*Alist of (FILE-REGEXP BACKUP-DIR OPTIONS ...))
120 It has the same meaning like `bkup-backup-directory-info' from package
121 `backup-dir'. If a Tramp file is backed up, and BACKUP-DIR is a local
122 file name, the backup directory is prepended with Tramp file name prefix
123 \(method, user, host\) of file.
125 \(setq tramp-bkup-backup-directory-info bkup-backup-directory-info\)
127 gives the same backup policy for Tramp files on their hosts like the
128 policy for local files."
130 (list (regexp :tag
"File regexp")
131 (string :tag
"Backup Dir")
136 (const search-upward
))))
139 (defcustom tramp-auto-save-directory nil
140 "*Put auto-save files in this directory, if set.
141 The idea is to use a local directory so that auto-saving is faster."
143 :type
'(choice (const nil
) string
))
145 (defcustom tramp-encoding-shell
146 (if (memq system-type
'(windows-nt))
149 "*Use this program for encoding and decoding commands on the local host.
150 This shell is used to execute the encoding and decoding command on the
151 local host, so if you want to use `~' in those commands, you should
152 choose a shell here which groks tilde expansion. `/bin/sh' normally
153 does not understand tilde expansion.
155 For encoding and deocding, commands like the following are executed:
157 /bin/sh -c COMMAND < INPUT > OUTPUT
159 This variable can be used to change the \"/bin/sh\" part. See the
160 variable `tramp-encoding-command-switch' for the \"-c\" part.
162 If the shell must be forced to be interactive, see
163 `tramp-encoding-command-interactive'.
165 Note that this variable is not used for remote commands. There are
166 mechanisms in tramp.el which automatically determine the right shell to
167 use for the remote host."
169 :type
'(file :must-match t
))
171 (defcustom tramp-encoding-command-switch
172 (if (string-match "cmd\\.exe" tramp-encoding-shell
)
175 "*Use this switch together with `tramp-encoding-shell' for local commands.
176 See the variable `tramp-encoding-shell' for more information."
180 (defcustom tramp-encoding-command-interactive
181 (unless (string-match "cmd\\.exe" tramp-encoding-shell
) "-i")
182 "*Use this switch together with `tramp-encoding-shell' for interactive shells.
183 See the variable `tramp-encoding-shell' for more information."
185 :type
'(choice (const nil
) string
))
188 (defvar tramp-methods nil
189 "*Alist of methods for remote files.
190 This is a list of entries of the form (NAME PARAM1 PARAM2 ...).
191 Each NAME stands for a remote access method. Each PARAM is a
192 pair of the form (KEY VALUE). The following KEYs are defined:
193 * `tramp-remote-shell'
194 This specifies the shell to use on the remote host. This
195 MUST be a Bourne-like shell. It is normally not necessary to
196 set this to any value other than \"/bin/sh\": Tramp wants to
197 use a shell which groks tilde expansion, but it can search
198 for it. Also note that \"/bin/sh\" exists on all Unixen,
199 this might not be true for the value that you decide to use.
200 You Have Been Warned.
201 * `tramp-remote-shell-args'
202 For implementation of `shell-command', this specifies the
203 arguments to let `tramp-remote-shell' run a single command.
204 * `tramp-login-program'
205 This specifies the name of the program to use for logging in to the
206 remote host. This may be the name of rsh or a workalike program,
207 or the name of telnet or a workalike, or the name of su or a workalike.
209 This specifies the list of arguments to pass to the above
210 mentioned program. Please note that this is a list of list of arguments,
211 that is, normally you don't want to put \"-a -b\" or \"-f foo\"
212 here. Instead, you want a list (\"-a\" \"-b\"), or (\"-f\" \"foo\").
213 There are some patterns: \"%h\" in this list is replaced by the host
214 name, \"%u\" is replaced by the user name, \"%p\" is replaced by the
215 port number, and \"%%\" can be used to obtain a literal percent character.
216 If a list containing \"%h\", \"%u\" or \"%p\" is unchanged during
217 expansion (i.e. no host or no user specified), this list is not used as
218 argument. By this, arguments like (\"-l\" \"%u\") are optional.
219 \"%t\" is replaced by the temporary file name produced with
220 `tramp-make-tramp-temp-file'. \"%k\" indicates the keep-date
221 parameter of a program, if exists.
223 When an asynchronous process is started, we know already that
224 the connection works. Therefore, we can pass additional
225 parameters to suppress diagnostic messages, in order not to
226 tamper the process output.
227 * `tramp-copy-program'
228 This specifies the name of the program to use for remotely copying
229 the file; this might be the absolute filename of rcp or the name of
232 This specifies the list of parameters to pass to the above mentioned
233 program, the hints for `tramp-login-args' also apply here.
234 * `tramp-copy-keep-date'
235 This specifies whether the copying program when the preserves the
236 timestamp of the original file.
237 * `tramp-copy-keep-tmpfile'
238 This specifies whether a temporary local file shall be kept
239 for optimization reasons (useful for \"rsync\" methods).
240 * `tramp-copy-recursive'
241 Whether the operation copies directories recursively.
242 * `tramp-default-port'
243 The default port of a method is needed in case of gateway connections.
244 Additionally, it is used as indication which method is prepared for
247 As the attribute name says, additional arguments are specified here
248 when a method is applied via a gateway.
249 * `tramp-password-end-of-line'
250 This specifies the string to use for terminating the line after
251 submitting the password. If this method parameter is nil, then the
252 value of the normal variable `tramp-default-password-end-of-line'
253 is used. This parameter is necessary because the \"plink\" program
254 requires any two characters after sending the password. These do
255 not have to be newline or carriage return characters. Other login
256 programs are happy with just one character, the newline character.
257 We use \"xy\" as the value for methods using \"plink\".
259 A directory on the remote host for temporary files. If not
260 specified, \"/tmp\" is taken as default.
262 What does all this mean? Well, you should specify `tramp-login-program'
263 for all methods; this program is used to log in to the remote site. Then,
264 there are two ways to actually transfer the files between the local and the
265 remote side. One way is using an additional rcp-like program. If you want
266 to do this, set `tramp-copy-program' in the method.
268 Another possibility for file transfer is inline transfer, i.e. the
269 file is passed through the same buffer used by `tramp-login-program'. In
270 this case, the file contents need to be protected since the
271 `tramp-login-program' might use escape codes or the connection might not
272 be eight-bit clean. Therefore, file contents are encoded for transit.
273 See the variables `tramp-local-coding-commands' and
274 `tramp-remote-coding-commands' for details.
276 So, to summarize: if the method is an out-of-band method, then you
277 must specify `tramp-copy-program' and `tramp-copy-args'. If it is an
278 inline method, then these two parameters should be nil. Methods which
279 are fit for gateways must have `tramp-default-port' at least.
283 When using `su' or `sudo' the phrase `open connection to a remote
284 host' sounds strange, but it is used nevertheless, for consistency.
285 No connection is opened to a remote host, but `su' or `sudo' is
286 started on the local host. You should specify a remote host
287 `localhost' or the name of the local host. Another host name is
288 useful only in combination with `tramp-default-proxies-alist'.")
290 (defun tramp-detect-ssh-controlmaster ()
291 "Call ssh to detect whether it supports the ControlMaster argument.
292 This function may return nil when the argument is supported, but
293 shouldn't return t when it isn't."
296 (call-process "ssh" nil t nil
"-o" "ControlMaster")
297 (goto-char (point-min))
298 (search-forward-regexp "Missing ControlMaster argument" nil t
))))
300 (defcustom tramp-default-method
301 ;; An external copy method seems to be preferred, because it is much
302 ;; more performant for large files, and it hasn't too serious delays
303 ;; for small files. But it must be ensured that there aren't
304 ;; permanent password queries. Either a password agent like
305 ;; "ssh-agent" or "Pageant" shall run, or the optional
306 ;; password-cache.el or auth-sources.el packages shall be active for
307 ;; password caching. "scpc" is chosen if we detect that the user is
308 ;; running OpenSSH 4.0 or newer.
310 ;; PuTTY is installed. We don't take it, if it is installed on a
311 ;; non-windows system, or pscp from the pssh (parallel ssh) package
313 ((and (eq system-type
'windows-nt
)
314 (executable-find "pscp"))
315 (if (or (fboundp 'password-read
)
316 (fboundp 'auth-source-user-or-password
)
317 (fboundp 'auth-source-search
)
318 ;; Pageant is running.
319 (tramp-compat-process-running-p "Pageant"))
322 ;; There is an ssh installation.
323 ((executable-find "scp")
325 ((tramp-detect-ssh-controlmaster) "scpc")
326 ((or (fboundp 'password-read
)
327 (fboundp 'auth-source-user-or-password
)
328 (fboundp 'auth-source-search
)
329 ;; ssh-agent is running.
330 (getenv "SSH_AUTH_SOCK")
331 (getenv "SSH_AGENT_PID"))
336 "*Default method to use for transferring files.
337 See `tramp-methods' for possibilities.
338 Also see `tramp-default-method-alist'."
343 (defcustom tramp-default-method-alist nil
344 "*Default method to use for specific host/user pairs.
345 This is an alist of items (HOST USER METHOD). The first matching item
346 specifies the method to use for a file name which does not specify a
347 method. HOST and USER are regular expressions or nil, which is
348 interpreted as a regular expression which always matches. If no entry
349 matches, the variable `tramp-default-method' takes effect.
351 If the file name does not specify the user, lookup is done using the
352 empty string for the user name.
354 See `tramp-methods' for a list of possibilities for METHOD."
356 :type
'(repeat (list (choice :tag
"Host regexp" regexp sexp
)
357 (choice :tag
"User regexp" regexp sexp
)
358 (choice :tag
"Method name" string
(const nil
)))))
360 (defcustom tramp-default-user nil
361 "*Default user to use for transferring files.
362 It is nil by default; otherwise settings in configuration files like
363 \"~/.ssh/config\" would be overwritten. Also see `tramp-default-user-alist'.
365 This variable is regarded as obsolete, and will be removed soon."
367 :type
'(choice (const nil
) string
))
370 (defcustom tramp-default-user-alist nil
371 "*Default user to use for specific method/host pairs.
372 This is an alist of items (METHOD HOST USER). The first matching item
373 specifies the user to use for a file name which does not specify a
374 user. METHOD and USER are regular expressions or nil, which is
375 interpreted as a regular expression which always matches. If no entry
376 matches, the variable `tramp-default-user' takes effect.
378 If the file name does not specify the method, lookup is done using the
379 empty string for the method name."
381 :type
'(repeat (list (choice :tag
"Method regexp" regexp sexp
)
382 (choice :tag
" Host regexp" regexp sexp
)
383 (choice :tag
" User name" string
(const nil
)))))
385 (defcustom tramp-default-host
(system-name)
386 "*Default host to use for transferring files.
387 Useful for su and sudo methods mostly."
391 (defcustom tramp-default-proxies-alist nil
392 "*Route to be followed for specific host/user pairs.
393 This is an alist of items (HOST USER PROXY). The first matching
394 item specifies the proxy to be passed for a file name located on
395 a remote target matching USER@HOST. HOST and USER are regular
396 expressions. PROXY must be a Tramp filename without a localname
397 part. Method and user name on PROXY are optional, which is
398 interpreted with the default values. PROXY can contain the
399 patterns %h and %u, which are replaced by the strings matching
400 HOST or USER, respectively.
402 HOST, USER or PROXY could also be Lisp forms, which will be
403 evaluated. The result must be a string or nil, which is
404 interpreted as a regular expression which always matches."
406 :type
'(repeat (list (choice :tag
"Host regexp" regexp sexp
)
407 (choice :tag
"User regexp" regexp sexp
)
408 (choice :tag
" Proxy name" string
(const nil
)))))
411 (defconst tramp-local-host-regexp
415 (list "localhost" "localhost6" (system-name) "127\.0\.0\.1" "::1") t
)
417 "*Host names which are regarded as local host.")
419 (defvar tramp-completion-function-alist nil
420 "*Alist of methods for remote files.
421 This is a list of entries of the form \(NAME PAIR1 PAIR2 ...\).
422 Each NAME stands for a remote access method. Each PAIR is of the form
423 \(FUNCTION FILE\). FUNCTION is responsible to extract user names and host
424 names from FILE for completion. The following predefined FUNCTIONs exists:
426 * `tramp-parse-rhosts' for \"~/.rhosts\" like files,
427 * `tramp-parse-shosts' for \"~/.ssh/known_hosts\" like files,
428 * `tramp-parse-sconfig' for \"~/.ssh/config\" like files,
429 * `tramp-parse-shostkeys' for \"~/.ssh2/hostkeys/*\" like files,
430 * `tramp-parse-sknownhosts' for \"~/.ssh2/knownhosts/*\" like files,
431 * `tramp-parse-hosts' for \"/etc/hosts\" like files,
432 * `tramp-parse-passwd' for \"/etc/passwd\" like files.
433 * `tramp-parse-netrc' for \"~/.netrc\" like files.
434 * `tramp-parse-putty' for PuTTY registry keys.
436 FUNCTION can also be a customer defined function. For more details see
439 (defconst tramp-echo-mark-marker
"_echo"
440 "String marker to surround echoed commands.")
442 (defconst tramp-echo-mark-marker-length
(length tramp-echo-mark-marker
)
443 "String length of `tramp-echo-mark-marker'.")
445 (defconst tramp-echo-mark
446 (concat tramp-echo-mark-marker
447 (make-string tramp-echo-mark-marker-length ?
\b))
448 "String mark to be transmitted around shell commands.
449 Used to separate their echo from the output they produce. This
450 will only be used if we cannot disable remote echo via stty.
451 This string must have no effect on the remote shell except for
452 producing some echo which can later be detected by
453 `tramp-echoed-echo-mark-regexp'. Using `tramp-echo-mark-marker',
454 followed by an equal number of backspaces to erase them will
457 (defconst tramp-echoed-echo-mark-regexp
458 (format "%s\\(\b\\( \b\\)?\\)\\{%d\\}"
459 tramp-echo-mark-marker tramp-echo-mark-marker-length
)
460 "Regexp which matches `tramp-echo-mark' as it gets echoed by
463 (defcustom tramp-rsh-end-of-line
"\n"
464 "*String used for end of line in rsh connections.
465 I don't think this ever needs to be changed, so please tell me about it
466 if you need to change this.
467 Also see the method parameter `tramp-password-end-of-line' and the normal
468 variable `tramp-default-password-end-of-line'."
472 (defcustom tramp-default-password-end-of-line
473 tramp-rsh-end-of-line
474 "*String used for end of line after sending a password.
475 This variable provides the default value for the method parameter
476 `tramp-password-end-of-line', see `tramp-methods' for more details.
478 It seems that people using plink under Windows need to send
479 \"\\r\\n\" (carriage-return, then newline) after a password, but just
480 \"\\n\" after all other lines. This variable can be used for the
481 password, see `tramp-rsh-end-of-line' for the other cases.
483 The default value is to use the same value as `tramp-rsh-end-of-line'."
487 (defcustom tramp-login-prompt-regexp
488 ".*ogin\\( .*\\)?: *"
489 "*Regexp matching login-like prompts.
490 The regexp should match at end of buffer.
492 Sometimes the prompt is reported to look like \"login as:\"."
496 (defcustom tramp-shell-prompt-pattern
497 ;; Allow a prompt to start right after a ^M since it indeed would be
498 ;; displayed at the beginning of the line (and Zsh uses it). This
499 ;; regexp works only for GNU Emacs.
500 (concat (if (featurep 'xemacs
) "" "\\(?:^\\|\r\\)")
501 "[^#$%>\n]*#?[#$%>] *\\(\e\\[[0-9;]*[a-zA-Z] *\\)*")
502 "Regexp to match prompts from remote shell.
503 Normally, Tramp expects you to configure `shell-prompt-pattern'
504 correctly, but sometimes it happens that you are connecting to a
505 remote host which sends a different kind of shell prompt. Therefore,
506 Tramp recognizes things matched by `shell-prompt-pattern' as prompt,
507 and also things matched by this variable. The default value of this
508 variable is similar to the default value of `shell-prompt-pattern',
509 which should work well in many cases.
511 This regexp must match both `tramp-initial-end-of-output' and
512 `tramp-end-of-output'."
516 (defcustom tramp-password-prompt-regexp
517 "^.*\\([pP]assword\\|[pP]assphrase\\).*:\^@? *"
518 "*Regexp matching password-like prompts.
519 The regexp should match at end of buffer.
521 The `sudo' program appears to insert a `^@' character into the prompt."
525 (defcustom tramp-wrong-passwd-regexp
527 ;; These strings should be on the last line
528 (regexp-opt '("Permission denied"
533 "Timeout, server not responding."
535 "Name or service not known"
536 "Host key verification failed."
537 "No supported authentication methods left to try!") t
)
541 ;; Here comes a list of regexes, separated by \\|
542 "Received signal [0-9]+"
544 "*Regexp matching a `login failed' message.
545 The regexp should match at end of buffer."
549 (defcustom tramp-yesno-prompt-regexp
551 (regexp-opt '("Are you sure you want to continue connecting (yes/no)?") t
)
553 "Regular expression matching all yes/no queries which need to be confirmed.
554 The confirmation should be done with yes or no.
555 The regexp should match at end of buffer.
556 See also `tramp-yn-prompt-regexp'."
560 (defcustom tramp-yn-prompt-regexp
562 (regexp-opt '("Store key in cache? (y/n)"
563 "Update cached key? (y/n, Return cancels connection)") t
)
565 "Regular expression matching all y/n queries which need to be confirmed.
566 The confirmation should be done with y or n.
567 The regexp should match at end of buffer.
568 See also `tramp-yesno-prompt-regexp'."
572 (defcustom tramp-terminal-prompt-regexp
576 "Terminal type\\? \\[.*\\]"
578 "Regular expression matching all terminal setting prompts.
579 The regexp should match at end of buffer.
580 The answer will be provided by `tramp-action-terminal', which see."
584 (defcustom tramp-operation-not-permitted-regexp
585 (concat "\\(" "preserving times.*" "\\|" "set mode" "\\)" ":\\s-*"
586 (regexp-opt '("Operation not permitted") t
))
587 "Regular expression matching keep-date problems in (s)cp operations.
588 Copying has been performed successfully already, so this message can
593 (defcustom tramp-copy-failed-regexp
595 (regexp-opt '("Permission denied"
598 "No such file or directory") t
)
600 "Regular expression matching copy problems in (s)cp operations."
604 (defcustom tramp-process-alive-regexp
606 "Regular expression indicating a process has finished.
607 In fact this expression is empty by intention, it will be used only to
608 check regularly the status of the associated process.
609 The answer will be provided by `tramp-action-process-alive',
610 `tramp-action-out-of-band', which see."
614 (defconst tramp-temp-name-prefix
"tramp."
615 "*Prefix to use for temporary files.
616 If this is a relative file name (such as \"tramp.\"), it is considered
617 relative to the directory name returned by the function
618 `tramp-compat-temporary-file-directory' (which see). It may also be an
619 absolute file name; don't forget to include a prefix for the filename
622 (defconst tramp-temp-buffer-name
" *tramp temp*"
623 "Buffer name for a temporary buffer.
624 It shall be used in combination with `generate-new-buffer-name'.")
626 (defvar tramp-temp-buffer-file-name nil
627 "File name of a persistent local temporary file.
628 Useful for \"rsync\" like methods.")
629 (make-variable-buffer-local 'tramp-temp-buffer-file-name
)
630 (put 'tramp-temp-buffer-file-name
'permanent-local t
)
632 ;; XEmacs is distributed with few Lisp packages. Further packages are
633 ;; installed using EFS. If we use a unified filename format, then
634 ;; Tramp is required in addition to EFS. (But why can't Tramp just
635 ;; disable EFS when Tramp is loaded? Then XEmacs can ship with EFS
636 ;; just like before.) Another reason for using a separate filename
637 ;; syntax on XEmacs is that EFS hooks into XEmacs in many places, but
638 ;; Tramp only knows how to deal with `file-name-handler-alist', not
641 ;; Currently, we have the choice between 'ftp, 'sep, and 'url.
643 (defcustom tramp-syntax
644 (if (featurep 'xemacs
) 'sep
'ftp
)
645 "Tramp filename syntax to be used.
647 It can have the following values:
649 'ftp -- Ange-FTP respective EFS like syntax (GNU Emacs default)
650 'sep -- Syntax as defined for XEmacs (not available yet for GNU Emacs)
651 'url -- URL-like syntax."
653 :type
(if (featurep 'xemacs
)
654 '(choice (const :tag
"EFS" ftp
)
655 (const :tag
"XEmacs" sep
)
656 (const :tag
"URL" url
))
657 '(choice (const :tag
"Ange-FTP" ftp
)
658 (const :tag
"URL" url
))))
660 (defconst tramp-prefix-format
661 (cond ((equal tramp-syntax
'ftp
) "/")
662 ((equal tramp-syntax
'sep
) "/[")
663 ((equal tramp-syntax
'url
) "/")
664 (t (error "Wrong `tramp-syntax' defined")))
665 "*String matching the very beginning of Tramp file names.
666 Used in `tramp-make-tramp-file-name'.")
668 (defconst tramp-prefix-regexp
669 (concat "^" (regexp-quote tramp-prefix-format
))
670 "*Regexp matching the very beginning of Tramp file names.
671 Should always start with \"^\". Derived from `tramp-prefix-format'.")
673 (defconst tramp-method-regexp
675 "*Regexp matching methods identifiers.")
677 (defconst tramp-postfix-method-format
678 (cond ((equal tramp-syntax
'ftp
) ":")
679 ((equal tramp-syntax
'sep
) "/")
680 ((equal tramp-syntax
'url
) "://")
681 (t (error "Wrong `tramp-syntax' defined")))
682 "*String matching delimiter between method and user or host names.
683 Used in `tramp-make-tramp-file-name'.")
685 (defconst tramp-postfix-method-regexp
686 (regexp-quote tramp-postfix-method-format
)
687 "*Regexp matching delimiter between method and user or host names.
688 Derived from `tramp-postfix-method-format'.")
690 (defconst tramp-user-regexp
"[^:/ \t]+"
691 "*Regexp matching user names.")
694 (defconst tramp-prefix-domain-format
"%"
695 "*String matching delimiter between user and domain names.")
698 (defconst tramp-prefix-domain-regexp
699 (regexp-quote tramp-prefix-domain-format
)
700 "*Regexp matching delimiter between user and domain names.
701 Derived from `tramp-prefix-domain-format'.")
703 (defconst tramp-domain-regexp
"[-a-zA-Z0-9_.]+"
704 "*Regexp matching domain names.")
706 (defconst tramp-user-with-domain-regexp
707 (concat "\\(" tramp-user-regexp
"\\)"
708 tramp-prefix-domain-regexp
709 "\\(" tramp-domain-regexp
"\\)")
710 "*Regexp matching user names with domain names.")
712 (defconst tramp-postfix-user-format
"@"
713 "*String matching delimiter between user and host names.
714 Used in `tramp-make-tramp-file-name'.")
716 (defconst tramp-postfix-user-regexp
717 (regexp-quote tramp-postfix-user-format
)
718 "*Regexp matching delimiter between user and host names.
719 Derived from `tramp-postfix-user-format'.")
721 (defconst tramp-host-regexp
"[a-zA-Z0-9_.-]+"
722 "*Regexp matching host names.")
724 (defconst tramp-prefix-ipv6-format
725 (cond ((equal tramp-syntax
'ftp
) "[")
726 ((equal tramp-syntax
'sep
) "")
727 ((equal tramp-syntax
'url
) "[")
728 (t (error "Wrong `tramp-syntax' defined")))
729 "*String matching left hand side of IPv6 addresses.
730 Used in `tramp-make-tramp-file-name'.")
732 (defconst tramp-prefix-ipv6-regexp
733 (regexp-quote tramp-prefix-ipv6-format
)
734 "*Regexp matching left hand side of IPv6 addresses.
735 Derived from `tramp-prefix-ipv6-format'.")
737 ;; The following regexp is a bit sloppy. But it shall serve our
738 ;; purposes. It covers also IPv4 mapped IPv6 addresses, like in
739 ;; "::ffff:192.168.0.1".
740 (defconst tramp-ipv6-regexp
741 "\\(?:\\(?:[a-zA-Z0-9]+\\)?:\\)+[a-zA-Z0-9.]+"
742 "*Regexp matching IPv6 addresses.")
744 (defconst tramp-postfix-ipv6-format
745 (cond ((equal tramp-syntax
'ftp
) "]")
746 ((equal tramp-syntax
'sep
) "")
747 ((equal tramp-syntax
'url
) "]")
748 (t (error "Wrong `tramp-syntax' defined")))
749 "*String matching right hand side of IPv6 addresses.
750 Used in `tramp-make-tramp-file-name'.")
752 (defconst tramp-postfix-ipv6-regexp
753 (regexp-quote tramp-postfix-ipv6-format
)
754 "*Regexp matching right hand side of IPv6 addresses.
755 Derived from `tramp-postfix-ipv6-format'.")
757 (defconst tramp-prefix-port-format
758 (cond ((equal tramp-syntax
'ftp
) "#")
759 ((equal tramp-syntax
'sep
) "#")
760 ((equal tramp-syntax
'url
) ":")
761 (t (error "Wrong `tramp-syntax' defined")))
762 "*String matching delimiter between host names and port numbers.")
764 (defconst tramp-prefix-port-regexp
765 (regexp-quote tramp-prefix-port-format
)
766 "*Regexp matching delimiter between host names and port numbers.
767 Derived from `tramp-prefix-port-format'.")
769 (defconst tramp-port-regexp
"[0-9]+"
770 "*Regexp matching port numbers.")
772 (defconst tramp-host-with-port-regexp
773 (concat "\\(" tramp-host-regexp
"\\)"
774 tramp-prefix-port-regexp
775 "\\(" tramp-port-regexp
"\\)")
776 "*Regexp matching host names with port numbers.")
778 (defconst tramp-postfix-host-format
779 (cond ((equal tramp-syntax
'ftp
) ":")
780 ((equal tramp-syntax
'sep
) "]")
781 ((equal tramp-syntax
'url
) "")
782 (t (error "Wrong `tramp-syntax' defined")))
783 "*String matching delimiter between host names and localnames.
784 Used in `tramp-make-tramp-file-name'.")
786 (defconst tramp-postfix-host-regexp
787 (regexp-quote tramp-postfix-host-format
)
788 "*Regexp matching delimiter between host names and localnames.
789 Derived from `tramp-postfix-host-format'.")
791 (defconst tramp-localname-regexp
".*$"
792 "*Regexp matching localnames.")
794 ;;; File name format:
796 (defconst tramp-file-name-structure
800 "\\(" "\\(" tramp-method-regexp
"\\)" tramp-postfix-method-regexp
"\\)?"
801 "\\(" "\\(" tramp-user-regexp
"\\)" tramp-postfix-user-regexp
"\\)?"
802 "\\(" "\\(" tramp-host-regexp
804 tramp-prefix-ipv6-regexp tramp-ipv6-regexp
805 tramp-postfix-ipv6-regexp
"\\)"
806 "\\(" tramp-prefix-port-regexp tramp-port-regexp
"\\)?" "\\)?"
807 tramp-postfix-host-regexp
808 "\\(" tramp-localname-regexp
"\\)")
811 "*List of five elements (REGEXP METHOD USER HOST FILE), detailing \
812 the Tramp file name structure.
814 The first element REGEXP is a regular expression matching a Tramp file
815 name. The regex should contain parentheses around the method name,
816 the user name, the host name, and the file name parts.
818 The second element METHOD is a number, saying which pair of
819 parentheses matches the method name. The third element USER is
820 similar, but for the user name. The fourth element HOST is similar,
821 but for the host name. The fifth element FILE is for the file name.
822 These numbers are passed directly to `match-string', which see. That
823 means the opening parentheses are counted to identify the pair.
825 See also `tramp-file-name-regexp'.")
828 (defconst tramp-file-name-regexp-unified
829 (if (memq system-type
'(cygwin windows-nt
))
830 "\\`/\\([^[/:]\\{2,\\}\\|[^/]\\{2,\\}]\\):"
831 "\\`/\\([^[/:]+\\|[^/]+]\\):")
832 "Value for `tramp-file-name-regexp' for unified remoting.
833 Emacs (not XEmacs) uses a unified filename syntax for Ange-FTP and
834 Tramp. See `tramp-file-name-structure' for more explanations.
836 On W32 systems, the volume letter must be ignored.")
839 (defconst tramp-file-name-regexp-separate
"\\`/\\[.*\\]"
840 "Value for `tramp-file-name-regexp' for separate remoting.
841 XEmacs uses a separate filename syntax for Tramp and EFS.
842 See `tramp-file-name-structure' for more explanations.")
845 (defconst tramp-file-name-regexp-url
"\\`/[^/:]+://"
846 "Value for `tramp-file-name-regexp' for URL-like remoting.
847 See `tramp-file-name-structure' for more explanations.")
850 (defconst tramp-file-name-regexp
851 (cond ((equal tramp-syntax
'ftp
) tramp-file-name-regexp-unified
)
852 ((equal tramp-syntax
'sep
) tramp-file-name-regexp-separate
)
853 ((equal tramp-syntax
'url
) tramp-file-name-regexp-url
)
854 (t (error "Wrong `tramp-syntax' defined")))
855 "*Regular expression matching file names handled by Tramp.
856 This regexp should match Tramp file names but no other file names.
857 When tramp.el is loaded, this regular expression is prepended to
858 `file-name-handler-alist', and that is searched sequentially. Thus,
859 if the Tramp entry appears rather early in the `file-name-handler-alist'
860 and is a bit too general, then some files might be considered Tramp
861 files which are not really Tramp files.
863 Please note that the entry in `file-name-handler-alist' is made when
864 this file \(tramp.el\) is loaded. This means that this variable must be set
865 before loading tramp.el. Alternatively, `file-name-handler-alist' can be
866 updated after changing this variable.
868 Also see `tramp-file-name-structure'.")
871 (defconst tramp-completion-file-name-regexp-unified
872 (if (memq system-type
'(cygwin windows-nt
))
873 "\\`/[^/]\\{2,\\}\\'" "\\`/[^/]*\\'")
874 "Value for `tramp-completion-file-name-regexp' for unified remoting.
875 GNU Emacs uses a unified filename syntax for Tramp and Ange-FTP.
876 See `tramp-file-name-structure' for more explanations.
878 On W32 systems, the volume letter must be ignored.")
881 (defconst tramp-completion-file-name-regexp-separate
882 "\\`/\\([[][^]]*\\)?\\'"
883 "Value for `tramp-completion-file-name-regexp' for separate remoting.
884 XEmacs uses a separate filename syntax for Tramp and EFS.
885 See `tramp-file-name-structure' for more explanations.")
888 (defconst tramp-completion-file-name-regexp-url
889 "\\`/[^/:]+\\(:\\(/\\(/[^/]*\\)?\\)?\\)?\\'"
890 "Value for `tramp-completion-file-name-regexp' for URL-like remoting.
891 See `tramp-file-name-structure' for more explanations.")
894 (defconst tramp-completion-file-name-regexp
895 (cond ((equal tramp-syntax
'ftp
) tramp-completion-file-name-regexp-unified
)
896 ((equal tramp-syntax
'sep
) tramp-completion-file-name-regexp-separate
)
897 ((equal tramp-syntax
'url
) tramp-completion-file-name-regexp-url
)
898 (t (error "Wrong `tramp-syntax' defined")))
899 "*Regular expression matching file names handled by Tramp completion.
900 This regexp should match partial Tramp file names only.
902 Please note that the entry in `file-name-handler-alist' is made when
903 this file (tramp.el) is loaded. This means that this variable must be set
904 before loading tramp.el. Alternatively, `file-name-handler-alist' can be
905 updated after changing this variable.
907 Also see `tramp-file-name-structure'.")
909 ;; Chunked sending kludge. We set this to 500 for black-listed constellations
910 ;; known to have a bug in `process-send-string'; some ssh connections appear
911 ;; to drop bytes when data is sent too quickly. There is also a connection
912 ;; buffer local variable, which is computed depending on remote host properties
913 ;; when `tramp-chunksize' is zero or nil.
914 (defcustom tramp-chunksize
915 (when (and (not (featurep 'xemacs
))
916 (memq system-type
'(hpux)))
918 ;; Parentheses in docstring starting at beginning of line are escaped.
919 ;; Fontification is messed up when
920 ;; `open-paren-in-column-0-is-defun-start' set to t.
921 "*If non-nil, chunksize for sending input to local process.
922 It is necessary only on systems which have a buggy `process-send-string'
923 implementation. The necessity, whether this variable must be set, can be
924 checked via the following code:
927 (let* ((user \"xxx\") (host \"yyy\")
929 (sent init) (received init))
930 (while (= sent received)
931 (setq sent (+ sent step))
933 (let ((proc (start-process (buffer-name) (current-buffer)
934 \"ssh\" \"-l\" user host \"wc\" \"-c\")))
935 (when (memq (process-status proc) '(run open))
936 (process-send-string proc (make-string sent ?\\ ))
937 (process-send-eof proc)
938 (process-send-eof proc))
939 (while (not (progn (goto-char (point-min))
940 (re-search-forward \"\\\\w+\" (point-max) t)))
941 (accept-process-output proc 1))
942 (when (memq (process-status proc) '(run open))
943 (setq received (string-to-number (match-string 0)))
944 (delete-process proc)
945 (message \"Bytes sent: %s\\tBytes received: %s\" sent received)
947 (if (> sent (+ init step))
948 (message \"You should set `tramp-chunksize' to a maximum of %s\"
950 (message \"Test does not work\")
951 (display-buffer (current-buffer))
954 In the Emacs normally running Tramp, evaluate the above code
955 \(replace \"xxx\" and \"yyy\" by the remote user and host name,
956 respectively\). You can do this, for example, by pasting it into
957 the `*scratch*' buffer and then hitting C-j with the cursor after the
958 last closing parenthesis. Note that it works only if you have configured
959 \"ssh\" to run without password query, see ssh-agent\(1\).
961 You will see the number of bytes sent successfully to the remote host.
962 If that number exceeds 1000, you can stop the execution by hitting
963 C-g, because your Emacs is likely clean.
965 When it is necessary to set `tramp-chunksize', you might consider to
966 use an out-of-the-band method \(like \"scp\"\) instead of an internal one
967 \(like \"ssh\"\), because setting `tramp-chunksize' to non-nil decreases
970 If your Emacs is buggy, the code stops and gives you an indication
971 about the value `tramp-chunksize' should be set. Maybe you could just
972 experiment a bit, e.g. changing the values of `init' and `step'
973 in the third line of the code.
975 Please raise a bug report via \"M-x tramp-bug\" if your system needs
976 this variable to be set as well."
978 :type
'(choice (const nil
) integer
))
980 ;; Logging in to a remote host normally requires obtaining a pty. But
981 ;; Emacs on MacOS X has process-connection-type set to nil by default,
982 ;; so on those systems Tramp doesn't obtain a pty. Here, we allow
983 ;; for an override of the system default.
984 (defcustom tramp-process-connection-type t
985 "Overrides `process-connection-type' for connections from Tramp.
986 Tramp binds process-connection-type to the value given here before
987 opening a connection to a remote host."
989 :type
'(choice (const nil
) (const t
) (const pty
)))
991 (defcustom tramp-completion-reread-directory-timeout
10
992 "Defines seconds since last remote command before rereading a directory.
993 A remote directory might have changed its contents. In order to
994 make it visible during file name completion in the minibuffer,
995 Tramp flushes its cache and rereads the directory contents when
996 more than `tramp-completion-reread-directory-timeout' seconds
997 have been gone since last remote command execution. A value of `t'
998 would require an immediate reread during filename completion, `nil'
999 means to use always cached values for the directory contents."
1001 :type
'(choice (const nil
) integer
))
1003 ;;; Internal Variables:
1005 (defvar tramp-current-method nil
1006 "Connection method for this *tramp* buffer.")
1008 (defvar tramp-current-user nil
1009 "Remote login name for this *tramp* buffer.")
1011 (defvar tramp-current-host nil
1012 "Remote host for this *tramp* buffer.")
1015 (defconst tramp-completion-file-name-handler-alist
1016 '((file-name-all-completions . tramp-completion-handle-file-name-all-completions
)
1017 (file-name-completion . tramp-completion-handle-file-name-completion
))
1018 "Alist of completion handler functions.
1019 Used for file names matching `tramp-file-name-regexp'. Operations
1020 not mentioned here will be handled by Tramp's file name handler
1021 functions, or the normal Emacs functions.")
1023 ;; Handlers for foreign methods, like FTP or SMB, shall be plugged here.
1024 ;;;###tramp-autoload
1025 (defvar tramp-foreign-file-name-handler-alist nil
1026 "Alist of elements (FUNCTION . HANDLER) for foreign methods handled specially.
1027 If (FUNCTION FILENAME) returns non-nil, then all I/O on that file is done by
1030 ;;; Internal functions which must come first:
1032 ;; Conversion functions between external representation and
1033 ;; internal data structure. Convenience functions for internal
1036 (defun tramp-file-name-p (vec)
1037 "Check, whether VEC is a Tramp object."
1038 (and (vectorp vec
) (= 4 (length vec
))))
1040 (defun tramp-file-name-method (vec)
1041 "Return method component of VEC."
1042 (and (tramp-file-name-p vec
) (aref vec
0)))
1044 (defun tramp-file-name-user (vec)
1045 "Return user component of VEC."
1046 (and (tramp-file-name-p vec
) (aref vec
1)))
1048 (defun tramp-file-name-host (vec)
1049 "Return host component of VEC."
1050 (and (tramp-file-name-p vec
) (aref vec
2)))
1052 (defun tramp-file-name-localname (vec)
1053 "Return localname component of VEC."
1054 (and (tramp-file-name-p vec
) (aref vec
3)))
1056 ;; The user part of a Tramp file name vector can be of kind
1057 ;; "user%domain". Sometimes, we must extract these parts.
1058 (defun tramp-file-name-real-user (vec)
1059 "Return the user name of VEC without domain."
1061 (let ((user (tramp-file-name-user vec
)))
1062 (if (and (stringp user
)
1063 (string-match tramp-user-with-domain-regexp user
))
1064 (match-string 1 user
)
1067 (defun tramp-file-name-domain (vec)
1068 "Return the domain name of VEC."
1070 (let ((user (tramp-file-name-user vec
)))
1072 (string-match tramp-user-with-domain-regexp user
)
1073 (match-string 2 user
)))))
1075 ;; The host part of a Tramp file name vector can be of kind
1076 ;; "host#port". Sometimes, we must extract these parts.
1077 (defun tramp-file-name-real-host (vec)
1078 "Return the host name of VEC without port."
1080 (let ((host (tramp-file-name-host vec
)))
1081 (if (and (stringp host
)
1082 (string-match tramp-host-with-port-regexp host
))
1083 (match-string 1 host
)
1086 (defun tramp-file-name-port (vec)
1087 "Return the port number of VEC."
1089 (let ((method (tramp-file-name-method vec
))
1090 (host (tramp-file-name-host vec
)))
1091 (or (and (stringp host
)
1092 (string-match tramp-host-with-port-regexp host
)
1093 (string-to-number (match-string 2 host
)))
1094 (tramp-get-method-parameter method
'tramp-default-port
)))))
1096 ;;;###tramp-autoload
1097 (defun tramp-tramp-file-p (name)
1098 "Return t if NAME is a string with Tramp file name syntax."
1100 (and (stringp name
) (string-match tramp-file-name-regexp name
))))
1102 (defun tramp-find-method (method user host
)
1103 "Return the right method string to use.
1104 This is METHOD, if non-nil. Otherwise, do a lookup in
1105 `tramp-default-method-alist'."
1107 (let ((choices tramp-default-method-alist
)
1110 (setq item
(pop choices
))
1111 (when (and (string-match (or (nth 0 item
) "") (or host
""))
1112 (string-match (or (nth 1 item
) "") (or user
"")))
1113 (setq lmethod
(nth 2 item
))
1114 (setq choices nil
)))
1116 tramp-default-method
))
1118 (defun tramp-find-user (method user host
)
1119 "Return the right user string to use.
1120 This is USER, if non-nil. Otherwise, do a lookup in
1121 `tramp-default-user-alist'."
1123 (let ((choices tramp-default-user-alist
)
1126 (setq item
(pop choices
))
1127 (when (and (string-match (or (nth 0 item
) "") (or method
""))
1128 (string-match (or (nth 1 item
) "") (or host
"")))
1129 (setq luser
(nth 2 item
))
1130 (setq choices nil
)))
1132 tramp-default-user
))
1134 (defun tramp-find-host (method user host
)
1135 "Return the right host string to use.
1136 This is HOST, if non-nil. Otherwise, it is `tramp-default-host'."
1137 (or (and (> (length host
) 0) host
)
1138 tramp-default-host
))
1140 (defun tramp-dissect-file-name (name &optional nodefault
)
1141 "Return a `tramp-file-name' structure.
1142 The structure consists of remote method, remote user, remote host
1143 and localname (file name on remote host). If NODEFAULT is
1144 non-nil, the file name parts are not expanded to their default
1147 (let ((match (string-match (nth 0 tramp-file-name-structure
) name
)))
1148 (unless match
(error "Not a Tramp file name: %s" name
))
1149 (let ((method (match-string (nth 1 tramp-file-name-structure
) name
))
1150 (user (match-string (nth 2 tramp-file-name-structure
) name
))
1151 (host (match-string (nth 3 tramp-file-name-structure
) name
))
1152 (localname (match-string (nth 4 tramp-file-name-structure
) name
)))
1154 (when (string-match tramp-prefix-ipv6-regexp host
)
1155 (setq host
(replace-match "" nil t host
)))
1156 (when (string-match tramp-postfix-ipv6-regexp host
)
1157 (setq host
(replace-match "" nil t host
))))
1159 (vector method user host localname
)
1161 (tramp-find-method method user host
)
1162 (tramp-find-user method user host
)
1163 (tramp-find-host method user host
)
1166 (defun tramp-buffer-name (vec)
1167 "A name for the connection buffer VEC."
1168 ;; We must use `tramp-file-name-real-host', because for gateway
1169 ;; methods the default port will be expanded later on, which would
1171 (let ((method (tramp-file-name-method vec
))
1172 (user (tramp-file-name-user vec
))
1173 (host (tramp-file-name-real-host vec
)))
1174 (if (not (zerop (length user
)))
1175 (format "*tramp/%s %s@%s*" method user host
)
1176 (format "*tramp/%s %s*" method host
))))
1178 (defun tramp-make-tramp-file-name (method user host localname
)
1179 "Constructs a Tramp file name from METHOD, USER, HOST and LOCALNAME."
1180 (concat tramp-prefix-format
1181 (when (not (zerop (length method
)))
1182 (concat method tramp-postfix-method-format
))
1183 (when (not (zerop (length user
)))
1184 (concat user tramp-postfix-user-format
))
1186 (if (string-match tramp-ipv6-regexp host
)
1187 (concat tramp-prefix-ipv6-format host tramp-postfix-ipv6-format
)
1189 tramp-postfix-host-format
1190 (when localname localname
)))
1192 (defun tramp-completion-make-tramp-file-name (method user host localname
)
1193 "Constructs a Tramp file name from METHOD, USER, HOST and LOCALNAME.
1194 It must not be a complete Tramp file name, but as long as there are
1195 necessary only. This function will be used in file name completion."
1196 (concat tramp-prefix-format
1197 (when (not (zerop (length method
)))
1198 (concat method tramp-postfix-method-format
))
1199 (when (not (zerop (length user
)))
1200 (concat user tramp-postfix-user-format
))
1201 (when (not (zerop (length host
)))
1203 (if (string-match tramp-ipv6-regexp host
)
1205 tramp-prefix-ipv6-format host tramp-postfix-ipv6-format
)
1207 tramp-postfix-host-format
))
1208 (when localname localname
)))
1210 (defun tramp-get-buffer (vec)
1211 "Get the connection buffer to be used for VEC."
1212 (or (get-buffer (tramp-buffer-name vec
))
1213 (with-current-buffer (get-buffer-create (tramp-buffer-name vec
))
1214 (setq buffer-undo-list t
)
1215 (setq default-directory
1216 (tramp-make-tramp-file-name
1217 (tramp-file-name-method vec
)
1218 (tramp-file-name-user vec
)
1219 (tramp-file-name-host vec
)
1223 (defun tramp-get-connection-buffer (vec)
1224 "Get the connection buffer to be used for VEC.
1225 In case a second asynchronous communication has been started, it is different
1226 from `tramp-get-buffer'."
1227 (or (tramp-get-connection-property vec
"process-buffer" nil
)
1228 (tramp-get-buffer vec
)))
1230 (defun tramp-get-connection-name (vec)
1231 "Get the connection name to be used for VEC.
1232 In case a second asynchronous communication has been started, it is different
1233 from the default one."
1234 (or (tramp-get-connection-property vec
"process-name" nil
)
1235 (tramp-buffer-name vec
)))
1237 (defun tramp-get-connection-process (vec)
1238 "Get the connection process to be used for VEC.
1239 In case a second asynchronous communication has been started, it is different
1240 from the default one."
1241 (get-process (tramp-get-connection-name vec
)))
1243 (defun tramp-debug-buffer-name (vec)
1244 "A name for the debug buffer for VEC."
1245 ;; We must use `tramp-file-name-real-host', because for gateway
1246 ;; methods the default port will be expanded later on, which would
1248 (let ((method (tramp-file-name-method vec
))
1249 (user (tramp-file-name-user vec
))
1250 (host (tramp-file-name-real-host vec
)))
1251 (if (not (zerop (length user
)))
1252 (format "*debug tramp/%s %s@%s*" method user host
)
1253 (format "*debug tramp/%s %s*" method host
))))
1255 (defconst tramp-debug-outline-regexp
1256 "[0-9]+:[0-9]+:[0-9]+\\.[0-9]+ [a-z0-9-]+ (\\([0-9]+\\)) #"
1257 "Used for highlighting Tramp debug buffers in `outline-mode'.")
1259 (defun tramp-debug-outline-level ()
1260 "Return the depth to which a statement is nested in the outline.
1261 Point must be at the beginning of a header line.
1263 The outline level is equal to the verbosity of the Tramp message."
1264 (1+ (string-to-number (match-string 1))))
1266 (defun tramp-get-debug-buffer (vec)
1267 "Get the debug buffer for VEC."
1268 (with-current-buffer
1269 (get-buffer-create (tramp-debug-buffer-name vec
))
1271 (setq buffer-undo-list t
)
1272 ;; Activate `outline-mode'. This runs `text-mode-hook' and
1273 ;; `outline-mode-hook'. We must prevent that local processes
1274 ;; die. Yes: I've seen `flyspell-mode', which starts "ispell".
1275 ;; Furthermore, `outline-regexp' must have the correct value
1276 ;; already, because it is used by `font-lock-compile-keywords'.
1277 (let ((default-directory (tramp-compat-temporary-file-directory))
1278 (outline-regexp tramp-debug-outline-regexp
))
1280 (set (make-local-variable 'outline-regexp
) tramp-debug-outline-regexp
)
1281 (set (make-local-variable 'outline-level
) 'tramp-debug-outline-level
))
1284 (defsubst tramp-debug-message
(vec fmt-string
&rest args
)
1285 "Append message to debug buffer.
1286 Message is formatted with FMT-STRING as control string and the remaining
1287 ARGS to actually emit the message (if applicable)."
1288 (when (get-buffer (tramp-buffer-name vec
))
1289 (with-current-buffer (tramp-get-debug-buffer vec
)
1290 (goto-char (point-max))
1295 ";; %sEmacs: %s Tramp: %s -*- mode: outline; -*-"
1296 (if (featurep 'sxemacs
) "SX" (if (featurep 'xemacs
) "X" "GNU "))
1297 emacs-version tramp-version
)))
1301 (let ((now (current-time)))
1302 (insert (format-time-string "%T." now
))
1303 (insert (format "%06d " (nth 2 now
))))
1304 ;; Calling Tramp function. We suppress compat and trace
1305 ;; functions from being displayed.
1306 (let ((btn 1) btf fn
)
1308 (setq btf
(nth 1 (backtrace-frame btn
)))
1312 (setq fn
(symbol-name btf
))
1315 (string-match "^tramp" fn
)
1321 '("tramp-compat-funcall"
1322 "tramp-compat-with-temp-message"
1323 "tramp-debug-message"
1325 "tramp-error-with-buffer"
1327 "tramp-with-progress-reporter")
1332 (setq btn
(1+ btn
))))
1333 ;; The following code inserts filename and line number.
1334 ;; Should be deactivated by default, because it is time
1336 ; (let ((ffn (find-function-noselect (intern fn))))
1340 ; (file-name-nondirectory (buffer-file-name (car ffn)))
1341 ; (with-current-buffer (car ffn)
1342 ; (1+ (count-lines (point-min) (cdr ffn)))))))
1343 (insert (format "%s " fn
)))
1345 (insert (apply 'format fmt-string args
)))))
1347 (defvar tramp-message-show-message t
1348 "Show Tramp message in the minibuffer.
1349 This variable is used to disable messages from `tramp-error'.
1350 The messages are visible anyway, because an error is raised.")
1352 (defsubst tramp-message
(vec-or-proc level fmt-string
&rest args
)
1353 "Emit a message depending on verbosity level.
1354 VEC-OR-PROC identifies the Tramp buffer to use. It can be either a
1355 vector or a process. LEVEL says to be quiet if `tramp-verbose' is
1356 less than LEVEL. The message is emitted only if `tramp-verbose' is
1357 greater than or equal to LEVEL.
1359 The message is also logged into the debug buffer when `tramp-verbose'
1360 is greater than or equal 4.
1362 Calls functions `message' and `tramp-debug-message' with FMT-STRING as
1363 control string and the remaining ARGS to actually emit the message (if
1366 (when (<= level tramp-verbose
)
1367 ;; Match data must be preserved!
1369 ;; Display only when there is a minimum level.
1370 (when (and tramp-message-show-message
(<= level
3))
1376 ((= level
2) "Warning: ")
1380 ;; Log only when there is a minimum level.
1381 (when (>= tramp-verbose
4)
1382 (when (and vec-or-proc
1383 (processp vec-or-proc
)
1384 (buffer-name (process-buffer vec-or-proc
)))
1385 (with-current-buffer (process-buffer vec-or-proc
)
1386 ;; Translate proc to vec.
1387 (setq vec-or-proc
(tramp-dissect-file-name default-directory
))))
1388 (when (and vec-or-proc
(vectorp vec-or-proc
))
1389 (apply 'tramp-debug-message
1391 (concat (format "(%d) # " level
) fmt-string
)
1394 (defsubst tramp-error
(vec-or-proc signal fmt-string
&rest args
)
1396 VEC-OR-PROC identifies the connection to use, SIGNAL is the
1397 signal identifier to be raised, remaining args passed to
1398 `tramp-message'. Finally, signal SIGNAL is raised."
1399 (let (tramp-message-show-message)
1402 (error-message-string
1404 (get signal
'error-message
)
1405 (apply 'format fmt-string args
))))
1406 (signal signal
(list (apply 'format fmt-string args
)))))
1408 (defsubst tramp-error-with-buffer
1409 (buffer vec-or-proc signal fmt-string
&rest args
)
1410 "Emit an error, and show BUFFER.
1411 If BUFFER is nil, show the connection buffer. Wait for 30\", or until
1412 an input event arrives. The other arguments are passed to `tramp-error'."
1413 (save-window-excursion
1415 (apply 'tramp-error vec-or-proc signal fmt-string args
)
1416 (when (and vec-or-proc
1417 (not (zerop tramp-verbose
))
1418 (not (tramp-completion-mode-p)))
1419 (let ((enable-recursive-minibuffers t
))
1421 (or (and (bufferp buffer
) buffer
)
1422 (and (processp vec-or-proc
) (process-buffer vec-or-proc
))
1423 (tramp-get-buffer vec-or-proc
)))
1426 (defmacro with-parsed-tramp-file-name
(filename var
&rest body
)
1427 "Parse a Tramp filename and make components available in the body.
1429 First arg FILENAME is evaluated and dissected into its components.
1430 Second arg VAR is a symbol. It is used as a variable name to hold
1431 the filename structure. It is also used as a prefix for the variables
1432 holding the components. For example, if VAR is the symbol `foo', then
1433 `foo' will be bound to the whole structure, `foo-method' will be bound to
1434 the method component, and so on for `foo-user', `foo-host', `foo-localname'.
1436 Remaining args are Lisp expressions to be evaluated (inside an implicit
1439 If VAR is nil, then we bind `v' to the structure and `method', `user',
1440 `host', `localname' to the components."
1441 `(let* ((,(or var
'v
) (tramp-dissect-file-name ,filename
))
1442 (,(if var
(intern (concat (symbol-name var
) "-method")) 'method
)
1443 (tramp-file-name-method ,(or var
'v
)))
1444 (,(if var
(intern (concat (symbol-name var
) "-user")) 'user
)
1445 (tramp-file-name-user ,(or var
'v
)))
1446 (,(if var
(intern (concat (symbol-name var
) "-host")) 'host
)
1447 (tramp-file-name-host ,(or var
'v
)))
1448 (,(if var
(intern (concat (symbol-name var
) "-localname")) 'localname
)
1449 (tramp-file-name-localname ,(or var
'v
))))
1452 (put 'with-parsed-tramp-file-name
'lisp-indent-function
2)
1453 (put 'with-parsed-tramp-file-name
'edebug-form-spec
'(form symbolp body
))
1454 (tramp-compat-font-lock-add-keywords
1455 'emacs-lisp-mode
'("\\<with-parsed-tramp-file-name\\>"))
1457 (defun tramp-progress-reporter-update (reporter &optional value
)
1458 (let* ((parameters (cdr reporter
))
1459 (message (aref parameters
3)))
1460 (when (string-match message
(or (current-message) ""))
1461 (tramp-compat-funcall 'progress-reporter-update reporter value
))))
1463 (defmacro tramp-with-progress-reporter
(vec level message
&rest body
)
1464 "Executes BODY, spinning a progress reporter with MESSAGE.
1465 If LEVEL does not fit for visible messages, or if this is a
1466 nested call of the macro, there are only traces without a visible
1468 (declare (indent 3) (debug t
))
1470 (tramp-message ,vec
,level
"%s..." ,message
)
1471 ;; We start a pulsing progress reporter after 3 seconds. Feature
1472 ;; introduced in Emacs 24.1.
1473 (when (and tramp-message-show-message
1474 ;; Display only when there is a minimum level.
1475 (<= ,level
(min tramp-verbose
3)))
1477 (setq pr
(tramp-compat-funcall 'make-progress-reporter
,message
)
1479 (run-at-time 3 0.1 'tramp-progress-reporter-update pr
)))))
1481 ;; Execute the body. Unset `tramp-message-show-message' when
1482 ;; the timer object is created, in order to suppress
1483 ;; concurrent timers.
1484 (let ((tramp-message-show-message
1485 (and tramp-message-show-message
(not tm
))))
1487 ;; Stop progress reporter.
1488 (if tm
(tramp-compat-funcall 'cancel-timer tm
))
1489 (tramp-message ,vec
,level
"%s...done" ,message
))))
1491 (tramp-compat-font-lock-add-keywords
1492 'emacs-lisp-mode
'("\\<tramp-with-progress-reporter\\>"))
1494 (defalias 'tramp-drop-volume-letter
1495 (if (memq system-type
'(cygwin windows-nt
))
1497 "Cut off unnecessary drive letter from file NAME.
1498 The functions `tramp-*-handle-expand-file-name' call `expand-file-name'
1499 locally on a remote file name. When the local system is a W32 system
1500 but the remote system is Unix, this introduces a superfluous drive
1501 letter into the file name. This function removes it."
1503 (if (string-match "\\`[a-zA-Z]:/" name
)
1504 (replace-match "/" nil t name
)
1509 ;;; Config Manipulation Functions:
1511 ;;;###tramp-autoload
1512 (defun tramp-set-completion-function (method function-list
)
1513 "Sets the list of completion functions for METHOD.
1514 FUNCTION-LIST is a list of entries of the form (FUNCTION FILE).
1515 The FUNCTION is intended to parse FILE according its syntax.
1516 It might be a predefined FUNCTION, or a user defined FUNCTION.
1517 Predefined FUNCTIONs are `tramp-parse-rhosts', `tramp-parse-shosts',
1518 `tramp-parse-sconfig', `tramp-parse-hosts', `tramp-parse-passwd',
1519 and `tramp-parse-netrc'.
1523 (tramp-set-completion-function
1525 '((tramp-parse-sconfig \"/etc/ssh_config\")
1526 (tramp-parse-sconfig \"~/.ssh/config\")))"
1528 (let ((r function-list
)
1530 (setq tramp-completion-function-alist
1531 (delete (assoc method tramp-completion-function-alist
)
1532 tramp-completion-function-alist
))
1535 ;; Remove double entries.
1536 (when (member (car v
) (cdr v
))
1537 (setcdr v
(delete (car v
) (cdr v
))))
1538 ;; Check for function and file or registry key.
1539 (unless (and (functionp (nth 0 (car v
)))
1540 (if (string-match "^HKEY_CURRENT_USER" (nth 1 (car v
)))
1541 ;; Windows registry.
1542 (and (memq system-type
'(cygwin windows-nt
))
1544 (tramp-compat-call-process
1545 "reg" nil nil nil
"query" (nth 1 (car v
)))))
1546 ;; Configuration file.
1547 (file-exists-p (nth 1 (car v
)))))
1548 (setq r
(delete (car v
) r
)))
1552 (add-to-list 'tramp-completion-function-alist
1555 (defun tramp-get-completion-function (method)
1556 "Returns a list of completion functions for METHOD.
1557 For definition of that list see `tramp-set-completion-function'."
1559 ;; Hosts visited once shall be remembered.
1560 `(tramp-parse-connection-properties ,method
)
1561 ;; The method related defaults.
1562 (cdr (assoc method tramp-completion-function-alist
))))
1565 ;;; Fontification of `read-file-name':
1567 ;; rfn-eshadow.el is part of Emacs 22. It is autoloaded.
1568 (defvar tramp-rfn-eshadow-overlay
)
1569 (make-variable-buffer-local 'tramp-rfn-eshadow-overlay
)
1571 (defun tramp-rfn-eshadow-setup-minibuffer ()
1572 "Set up a minibuffer for `file-name-shadow-mode'.
1573 Adds another overlay hiding filename parts according to Tramp's
1574 special handling of `substitute-in-file-name'."
1575 (when (symbol-value 'minibuffer-completing-file-name
)
1576 (setq tramp-rfn-eshadow-overlay
1577 (tramp-compat-funcall
1579 (tramp-compat-funcall 'minibuffer-prompt-end
)
1580 (tramp-compat-funcall 'minibuffer-prompt-end
)))
1581 ;; Copy rfn-eshadow-overlay properties.
1582 (let ((props (tramp-compat-funcall
1583 'overlay-properties
(symbol-value 'rfn-eshadow-overlay
))))
1585 ;; The `field' property prevents correct minibuffer
1586 ;; completion; we exclude it.
1587 (if (not (eq (car props
) 'field
))
1588 (tramp-compat-funcall
1589 'overlay-put tramp-rfn-eshadow-overlay
(pop props
) (pop props
))
1590 (pop props
) (pop props
))))))
1592 (when (boundp 'rfn-eshadow-setup-minibuffer-hook
)
1593 (add-hook 'rfn-eshadow-setup-minibuffer-hook
1594 'tramp-rfn-eshadow-setup-minibuffer
)
1595 (add-hook 'tramp-unload-hook
1597 (remove-hook 'rfn-eshadow-setup-minibuffer-hook
1598 'tramp-rfn-eshadow-setup-minibuffer
))))
1600 (defconst tramp-rfn-eshadow-update-overlay-regexp
1601 (format "[^%s/~]*\\(/\\|~\\)" tramp-postfix-host-format
))
1603 (defun tramp-rfn-eshadow-update-overlay ()
1604 "Update `rfn-eshadow-overlay' to cover shadowed part of minibuffer input.
1605 This is intended to be used as a minibuffer `post-command-hook' for
1606 `file-name-shadow-mode'; the minibuffer should have already
1607 been set up by `rfn-eshadow-setup-minibuffer'."
1608 ;; In remote files name, there is a shadowing just for the local part.
1609 (let ((end (or (tramp-compat-funcall
1610 'overlay-end
(symbol-value 'rfn-eshadow-overlay
))
1611 (tramp-compat-funcall 'minibuffer-prompt-end
))))
1614 (tramp-compat-funcall 'buffer-substring-no-properties end
(point-max)))
1618 (1+ (or (string-match
1619 tramp-rfn-eshadow-update-overlay-regexp
(buffer-string) end
)
1622 (let ((rfn-eshadow-overlay tramp-rfn-eshadow-overlay
)
1623 (rfn-eshadow-update-overlay-hook nil
))
1624 (tramp-compat-funcall
1625 'move-overlay rfn-eshadow-overlay
(point-max) (point-max))
1626 (tramp-compat-funcall 'rfn-eshadow-update-overlay
)))))))
1628 (when (boundp 'rfn-eshadow-update-overlay-hook
)
1629 (add-hook 'rfn-eshadow-update-overlay-hook
1630 'tramp-rfn-eshadow-update-overlay
)
1631 (add-hook 'tramp-unload-hook
1633 (remove-hook 'rfn-eshadow-update-overlay-hook
1634 'tramp-rfn-eshadow-update-overlay
))))
1636 ;; Inodes don't exist for some file systems. Therefore we must
1637 ;; generate virtual ones. Used in `find-buffer-visiting'. The method
1638 ;; applied might be not so efficient (Ange-FTP uses hashes). But
1639 ;; performance isn't the major issue given that file transfer will
1641 (defvar tramp-inodes nil
1642 "Keeps virtual inodes numbers.")
1644 ;; Devices must distinguish physical file systems. The device numbers
1645 ;; provided by "lstat" aren't unique, because we operate on different hosts.
1646 ;; So we use virtual device numbers, generated by Tramp. Both Ange-FTP and
1647 ;; EFS use device number "-1". In order to be different, we use device number
1648 ;; (-1 . x), whereby "x" is unique for a given (method user host).
1649 (defvar tramp-devices nil
1650 "Keeps virtual device numbers.")
1652 (defun tramp-default-file-modes (filename)
1653 "Return file modes of FILENAME as integer.
1654 If the file modes of FILENAME cannot be determined, return the
1655 value of `default-file-modes', without execute permissions."
1656 (or (file-modes filename
)
1657 (logand (default-file-modes) (tramp-compat-octal-to-decimal "0666"))))
1659 (defun tramp-replace-environment-variables (filename)
1660 "Replace environment variables in FILENAME.
1661 Return the string with the replaced variables."
1663 (let ((idx (string-match "$\\(\\w+\\)" filename
)))
1664 ;; `$' is coded as `$$'.
1666 (or (zerop idx
) (not (eq ?$
(aref filename
(1- idx
)))))
1667 (getenv (match-string 1 filename
)))
1670 (substitute-in-file-name (match-string 0 filename
))
1674 ;; In XEmacs, electricity is implemented via a key map for ?/ and ?~,
1675 ;; which calls corresponding functions (see minibuf.el).
1676 (when (fboundp 'minibuffer-electric-separator
)
1681 (around ,(intern (format "tramp-advice-%s" x
)) activate
)
1682 "Invoke `substitute-in-file-name' for Tramp files."
1683 (if (and (symbol-value 'minibuffer-electric-file-name-behavior
)
1684 (tramp-tramp-file-p (buffer-substring)))
1685 ;; We don't need to handle `last-input-event', because
1686 ;; due to the key map we know it must be ?/ or ?~.
1687 (let ((s (concat (buffer-substring (point-min) (point))
1688 (string last-command-char
))))
1689 (delete-region (point-min) (point))
1690 (insert (substitute-in-file-name s
))
1691 (setq ad-return-value last-command-char
))
1697 (ad-remove-advice ',x
'around
',(intern (format "tramp-advice-%s" x
)))
1698 (ad-activate ',x
)))))
1700 '(minibuffer-electric-separator
1701 minibuffer-electric-tilde
)))
1703 (defun tramp-find-file-name-coding-system-alist (filename tmpname
)
1704 "Like `find-operation-coding-system' for Tramp filenames.
1705 Tramp's `insert-file-contents' and `write-region' work over
1706 temporary file names. If `file-coding-system-alist' contains an
1707 expression, which matches more than the file name suffix, the
1708 coding system might not be determined. This function repairs it."
1710 (dolist (elt file-coding-system-alist result
)
1711 (when (and (consp elt
) (string-match (car elt
) filename
))
1712 ;; We found a matching entry in `file-coding-system-alist'.
1713 ;; So we add a similar entry, but with the temporary file name
1716 'result
(cons (regexp-quote tmpname
) (cdr elt
)) 'append
)))))
1719 (progn (defun tramp-run-real-handler (operation args
)
1720 "Invoke normal file name handler for OPERATION.
1721 First arg specifies the OPERATION, second arg is a list of arguments to
1722 pass to the OPERATION."
1723 (let* ((inhibit-file-name-handlers
1724 `(tramp-file-name-handler
1725 tramp-vc-file-name-handler
1726 tramp-completion-file-name-handler
1727 cygwin-mount-name-hook-function
1728 cygwin-mount-map-drive-hook-function
1730 ,(and (eq inhibit-file-name-operation operation
)
1731 inhibit-file-name-handlers
)))
1732 (inhibit-file-name-operation operation
))
1733 (apply operation args
))))
1736 (progn (defun tramp-completion-run-real-handler (operation args
)
1737 "Invoke `tramp-file-name-handler' for OPERATION.
1738 First arg specifies the OPERATION, second arg is a list of arguments to
1739 pass to the OPERATION."
1740 (let* ((inhibit-file-name-handlers
1741 `(tramp-completion-file-name-handler
1742 cygwin-mount-name-hook-function
1743 cygwin-mount-map-drive-hook-function
1745 ,(and (eq inhibit-file-name-operation operation
)
1746 inhibit-file-name-handlers
)))
1747 (inhibit-file-name-operation operation
))
1748 (apply operation args
))))
1750 ;; We handle here all file primitives. Most of them have the file
1751 ;; name as first parameter; nevertheless we check for them explicitly
1752 ;; in order to be signaled if a new primitive appears. This
1753 ;; scenario is needed because there isn't a way to decide by
1754 ;; syntactical means whether a foreign method must be called. It would
1755 ;; ease the life if `file-name-handler-alist' would support a decision
1756 ;; function as well but regexp only.
1757 (defun tramp-file-name-for-operation (operation &rest args
)
1758 "Return file name related to OPERATION file primitive.
1759 ARGS are the arguments OPERATION has been called with."
1761 ;; FILE resp DIRECTORY.
1763 (list 'access-file
'byte-compiler-base-file-name
'delete-directory
1764 'delete-file
'diff-latest-backup-file
'directory-file-name
1765 'directory-files
'directory-files-and-attributes
1766 'dired-compress-file
'dired-uncache
1767 'file-accessible-directory-p
'file-attributes
1768 'file-directory-p
'file-executable-p
'file-exists-p
1769 'file-local-copy
'file-remote-p
'file-modes
1770 'file-name-as-directory
'file-name-directory
1771 'file-name-nondirectory
'file-name-sans-versions
1772 'file-ownership-preserved-p
'file-readable-p
1773 'file-regular-p
'file-symlink-p
'file-truename
1774 'file-writable-p
'find-backup-file-name
'find-file-noselect
1775 'get-file-buffer
'insert-directory
'insert-file-contents
1776 'load
'make-directory
'make-directory-internal
1777 'set-file-modes
'substitute-in-file-name
1778 'unhandled-file-name-directory
'vc-registered
1782 'file-selinux-context
'set-file-selinux-context
1784 'abbreviate-file-name
'create-file-buffer
1785 'dired-file-modtime
'dired-make-compressed-filename
1786 'dired-recursive-delete-directory
'dired-set-file-modtime
1787 'dired-shell-unhandle-file-name
'dired-uucode-file
1788 'insert-file-contents-literally
'make-temp-name
'recover-file
1789 'vm-imap-check-mail
'vm-pop-check-mail
'vm-spool-check-mail
))
1790 (if (file-name-absolute-p (nth 0 args
))
1792 (expand-file-name (nth 0 args
))))
1793 ;; FILE DIRECTORY resp FILE1 FILE2.
1795 (list 'add-name-to-file
'copy-file
'expand-file-name
1796 'file-name-all-completions
'file-name-completion
1797 'file-newer-than-file-p
'make-symbolic-link
'rename-file
1801 'dired-make-relative-symlink
1802 'vm-imap-move-mail
'vm-pop-move-mail
'vm-spool-move-mail
))
1805 ((string-match tramp-file-name-regexp
(nth 0 args
)) (nth 0 args
))
1806 ((string-match tramp-file-name-regexp
(nth 1 args
)) (nth 1 args
))
1807 (t (buffer-file-name (current-buffer))))))
1809 ((eq operation
'write-region
)
1813 (list 'set-visited-file-modtime
'verify-visited-file-modtime
1815 'make-auto-save-file-name
1819 (if (bufferp (nth 0 args
)) (nth 0 args
) (current-buffer))))
1822 (list ;; not in Emacs 23+.
1831 'dired-print-file
'dired-shell-call-process
1833 'executable-find
'start-process
1834 'call-process
'call-process-region
))
1836 ;; Unknown file primitive.
1837 (t (error "unknown file I/O primitive: %s" operation
))))
1839 (defun tramp-find-foreign-file-name-handler (filename)
1840 "Return foreign file name handler if exists."
1841 (when (tramp-tramp-file-p filename
)
1842 (let ((v (tramp-dissect-file-name filename t
))
1843 (handler tramp-foreign-file-name-handler-alist
)
1845 ;; When we are not fully sure that filename completion is safe,
1846 ;; we should not return a handler.
1847 (when (or (tramp-file-name-method v
) (tramp-file-name-user v
)
1848 (and (tramp-file-name-host v
)
1849 (not (member (tramp-file-name-host v
)
1850 (mapcar 'car tramp-methods
))))
1851 (not (tramp-completion-mode-p)))
1853 (setq elt
(car handler
)
1854 handler
(cdr handler
))
1855 (when (funcall (car elt
) filename
)
1862 (defun tramp-file-name-handler (operation &rest args
)
1863 "Invoke Tramp file name handler.
1864 Falls back to normal file name handler if no Tramp file name handler exists."
1868 (tramp-replace-environment-variables
1869 (apply 'tramp-file-name-for-operation operation args
)))
1870 (completion (tramp-completion-mode-p))
1871 (foreign (tramp-find-foreign-file-name-handler filename
)))
1872 (with-parsed-tramp-file-name filename nil
1873 ;; Call the backend function.
1876 (let ((sf (symbol-function foreign
)))
1877 ;; Some packages set the default directory to a
1878 ;; remote path, before respective Tramp packages
1879 ;; are already loaded. This results in
1880 ;; recursive loading. Therefore, we load the
1881 ;; Tramp packages locally.
1882 (when (and (listp sf
) (eq (car sf
) 'autoload
))
1883 (let ((default-directory
1884 (tramp-compat-temporary-file-directory)))
1885 (load (cadr sf
) 'noerror
)))
1886 (apply foreign operation args
))
1888 ;; Trace that somebody has interrupted the operation.
1890 (let (tramp-message-show-message)
1892 v
1 "Interrupt received in operation %s"
1893 (append (list operation
) args
)))
1894 ;; Propagate the quit signal.
1895 (signal (car err
) (cdr err
)))
1897 ;; When we are in completion mode, some failed
1898 ;; operations shall return at least a default value
1899 ;; in order to give the user a chance to correct the
1900 ;; file name in the minibuffer.
1903 ((and completion
(zerop (length localname
))
1904 (memq operation
'(file-exists-p file-directory-p
)))
1906 ((and completion
(zerop (length localname
))
1908 '(expand-file-name file-name-as-directory
)))
1910 ;; Propagate the error.
1911 (t (signal (car err
) (cdr err
))))))
1913 ;; Nothing to do for us.
1914 (tramp-run-real-handler operation args
)))))
1916 ;; When `tramp-mode' is not enabled, we don't do anything.
1917 (tramp-run-real-handler operation args
)))
1919 ;; In Emacs, there is some concurrency due to timers. If a timer
1920 ;; interrupts Tramp and wishes to use the same connection buffer as
1921 ;; the "main" Emacs, then garbage might occur in the connection
1922 ;; buffer. Therefore, we need to make sure that a timer does not use
1923 ;; the same connection buffer as the "main" Emacs. We implement a
1924 ;; cheap global lock, instead of locking each connection buffer
1925 ;; separately. The global lock is based on two variables,
1926 ;; `tramp-locked' and `tramp-locker'. `tramp-locked' is set to true
1927 ;; (with setq) to indicate a lock. But Tramp also calls itself during
1928 ;; processing of a single file operation, so we need to allow
1929 ;; recursive calls. That's where the `tramp-locker' variable comes in
1930 ;; -- it is let-bound to t during the execution of the current
1931 ;; handler. So if `tramp-locked' is t and `tramp-locker' is also t,
1932 ;; then we should just proceed because we have been called
1933 ;; recursively. But if `tramp-locker' is nil, then we are a timer
1934 ;; interrupting the "main" Emacs, and then we signal an error.
1936 (defvar tramp-locked nil
1937 "If non-nil, then Tramp is currently busy.
1938 Together with `tramp-locker', this implements a locking mechanism
1939 preventing reentrant calls of Tramp.")
1941 (defvar tramp-locker nil
1942 "If non-nil, then a caller has locked Tramp.
1943 Together with `tramp-locked', this implements a locking mechanism
1944 preventing reentrant calls of Tramp.")
1947 (progn (defun tramp-completion-file-name-handler (operation &rest args
)
1948 "Invoke Tramp file name completion handler.
1949 Falls back to normal file name handler if no Tramp file name handler exists."
1950 ;; We bind `directory-sep-char' here for XEmacs on Windows, which
1951 ;; would otherwise use backslash.
1952 (let ((directory-sep-char ?
/)
1953 (fn (assoc operation tramp-completion-file-name-handler-alist
)))
1955 ;; When `tramp-mode' is not enabled, we don't do anything.
1957 ;; For other syntaxes than `sep', the regexp matches many common
1958 ;; situations where the user doesn't actually want to use Tramp.
1959 ;; So to avoid autoloading Tramp after typing just "/s", we
1960 ;; disable this part of the completion, unless the user implicitly
1961 ;; indicated his interest in using a fancier completion system.
1962 (or (eq tramp-syntax
'sep
)
1963 (featurep 'tramp
) ;; If it's loaded, we may as well use it.
1964 ;; `partial-completion-mode' does not exist in XEmacs.
1965 ;; It is obsoleted with Emacs 24.1.
1966 (and (boundp 'partial-completion-mode
)
1967 (symbol-value 'partial-completion-mode
))
1968 ;; FIXME: These may have been loaded even if the user never
1969 ;; intended to use them.
1971 (featurep 'icicles
)))
1972 (save-match-data (apply (cdr fn
) args
))
1973 (tramp-completion-run-real-handler operation args
)))))
1976 (progn (defun tramp-register-file-name-handlers ()
1977 "Add Tramp file name handlers to `file-name-handler-alist'."
1978 ;; Remove autoloaded handlers from file name handler alist. Useful,
1979 ;; if `tramp-syntax' has been changed.
1980 (let ((a1 (rassq 'tramp-file-name-handler file-name-handler-alist
)))
1981 (setq file-name-handler-alist
(delq a1 file-name-handler-alist
)))
1983 'tramp-completion-file-name-handler file-name-handler-alist
)))
1984 (setq file-name-handler-alist
(delq a1 file-name-handler-alist
)))
1985 ;; Add the handlers.
1986 (add-to-list 'file-name-handler-alist
1987 (cons tramp-file-name-regexp
'tramp-file-name-handler
))
1988 (put 'tramp-file-name-handler
'safe-magic t
)
1989 (add-to-list 'file-name-handler-alist
1990 (cons tramp-completion-file-name-regexp
1991 'tramp-completion-file-name-handler
))
1992 (put 'tramp-completion-file-name-handler
'safe-magic t
)
1993 ;; If jka-compr or epa-file are already loaded, move them to the
1994 ;; front of `file-name-handler-alist'.
1995 (dolist (fnh '(epa-file-handler jka-compr-handler
))
1996 (let ((entry (rassoc fnh file-name-handler-alist
)))
1998 (setq file-name-handler-alist
1999 (cons entry
(delete entry file-name-handler-alist
))))))))
2001 ;; `tramp-file-name-handler' must be registered before evaluation of
2002 ;; site-start and init files, because there might exist remote files
2003 ;; already, f.e. files kept via recentf-mode.
2005 (tramp-register-file-name-handlers)
2007 (defun tramp-exists-file-name-handler (operation &rest args
)
2008 "Check, whether OPERATION runs a file name handler."
2009 ;; The file name handler is determined on base of either an
2010 ;; argument, `buffer-file-name', or `default-directory'.
2012 (let* ((buffer-file-name "/")
2013 (default-directory "/")
2014 (fnha file-name-handler-alist
)
2015 (check-file-name-operation operation
)
2016 (file-name-handler-alist
2019 (lambda (operation &rest args
)
2020 "Returns OPERATION if it is the one to be checked."
2021 (if (equal check-file-name-operation operation
)
2023 (let ((file-name-handler-alist fnha
))
2024 (apply operation args
))))))))
2025 (equal (apply operation args
) operation
))))
2028 (defun tramp-unload-file-name-handlers ()
2029 (setq file-name-handler-alist
2030 (delete (rassoc 'tramp-file-name-handler
2031 file-name-handler-alist
)
2032 (delete (rassoc 'tramp-completion-file-name-handler
2033 file-name-handler-alist
)
2034 file-name-handler-alist
))))
2036 (add-hook 'tramp-unload-hook
'tramp-unload-file-name-handlers
)
2038 ;;; File name handler functions for completion mode:
2040 (defvar tramp-completion-mode nil
2041 "If non-nil, external packages signal that they are in file name completion.
2043 This is necessary, because Tramp uses a heuristic depending on last
2044 input event. This fails when external packages use other characters
2045 but <TAB>, <SPACE> or ?\\? for file name completion. This variable
2046 should never be set globally, the intention is to let-bind it.")
2048 ;; Necessary because `tramp-file-name-regexp-unified' and
2049 ;; `tramp-completion-file-name-regexp-unified' aren't different. If
2050 ;; nil, `tramp-completion-run-real-handler' is called (i.e. forwarding
2051 ;; to `tramp-file-name-handler'). Otherwise, it takes
2052 ;; `tramp-run-real-handler'. Using `last-input-event' is a little bit
2053 ;; risky, because completing a file might require loading other files,
2054 ;; like "~/.netrc", and for them it shouldn't be decided based on that
2055 ;; variable. On the other hand, those files shouldn't have partial
2056 ;; Tramp file name syntax. Maybe another variable should be introduced
2057 ;; overwriting this check in such cases. Or we change Tramp file name
2058 ;; syntax in order to avoid ambiguities, like in XEmacs ...
2059 ;;;###tramp-autoload
2060 (defun tramp-completion-mode-p ()
2061 "Check, whether method / user name / host name completion is active."
2063 ;; Signal from outside. `non-essential' has been introduced in Emacs 24.
2064 (and (boundp 'non-essential
) (symbol-value 'non-essential
))
2065 tramp-completion-mode
2067 (equal last-input-event
'tab
)
2068 (and (natnump last-input-event
)
2070 ;; ?\t has event-modifier 'control.
2071 (equal last-input-event ?
\t)
2072 (and (not (event-modifiers last-input-event
))
2073 (or (equal last-input-event ?
\?)
2074 (equal last-input-event ?\
)))))
2076 (and (featurep 'xemacs
)
2077 ;; `last-input-event' might be nil.
2078 (not (null last-input-event
))
2079 ;; `last-input-event' may have no character approximation.
2080 (tramp-compat-funcall 'event-to-character last-input-event
)
2082 ;; ?\t has event-modifier 'control.
2084 (tramp-compat-funcall 'event-to-character last-input-event
) ?
\t)
2085 (and (not (event-modifiers last-input-event
))
2087 (tramp-compat-funcall 'event-to-character last-input-event
)
2090 (tramp-compat-funcall 'event-to-character last-input-event
)
2093 (defun tramp-connectable-p (filename)
2094 "Check, whether it is possible to connect the remote host w/o side-effects.
2095 This is true, if either the remote host is already connected, or if we are
2096 not in completion mode."
2097 (and (tramp-tramp-file-p filename
)
2098 (with-parsed-tramp-file-name filename nil
2099 (or (get-buffer (tramp-buffer-name v
))
2100 (not (tramp-completion-mode-p))))))
2102 ;; Method, host name and user name completion.
2103 ;; `tramp-completion-dissect-file-name' returns a list of
2104 ;; tramp-file-name structures. For all of them we return possible completions.
2106 (defun tramp-completion-handle-file-name-all-completions (filename directory
)
2107 "Like `file-name-all-completions' for partial Tramp files."
2109 (let* ((fullname (tramp-drop-volume-letter
2110 (expand-file-name filename directory
)))
2111 ;; Possible completion structures.
2112 (v (tramp-completion-dissect-file-name fullname
))
2116 (let* ((car (car v
))
2117 (method (tramp-file-name-method car
))
2118 (user (tramp-file-name-user car
))
2119 (host (tramp-file-name-host car
))
2120 (localname (tramp-file-name-localname car
))
2121 (m (tramp-find-method method user host
))
2122 (tramp-current-user user
) ; see `tramp-parse-passwd'
2125 (unless localname
;; Nothing to complete.
2129 ;; Method dependent user / host combinations.
2133 (setq all-user-hosts
2134 (append all-user-hosts
2135 (funcall (nth 0 x
) (nth 1 x
)))))
2136 (tramp-get-completion-function m
))
2142 (tramp-get-completion-user-host
2143 method user host
(nth 0 x
) (nth 1 x
)))
2144 (delq nil all-user-hosts
)))))
2146 ;; Possible methods.
2148 (append result
(tramp-get-completion-methods m
)))))
2152 ;; Unify list, remove nil elements.
2154 (let ((car (car result
)))
2158 (substring car
(length (tramp-drop-volume-letter directory
)))))
2159 (setq result
(cdr result
))))
2161 ;; Complete local parts.
2165 (apply (if (tramp-connectable-p fullname
)
2166 'tramp-completion-run-real-handler
2167 'tramp-run-real-handler
)
2168 'file-name-all-completions
(list (list filename directory
)))))))
2170 ;; Method, host name and user name completion for a file.
2172 (defun tramp-completion-handle-file-name-completion
2173 (filename directory
&optional predicate
)
2174 "Like `file-name-completion' for Tramp files."
2177 (mapcar 'list
(file-name-all-completions filename directory
))
2178 (when (and predicate
2179 (tramp-connectable-p (expand-file-name filename directory
)))
2180 (lambda (x) (funcall predicate
(expand-file-name (car x
) directory
))))))
2182 ;; I misuse a little bit the tramp-file-name structure in order to handle
2183 ;; completion possibilities for partial methods / user names / host names.
2184 ;; Return value is a list of tramp-file-name structures according to possible
2185 ;; completions. If "localname" is non-nil it means there
2186 ;; shouldn't be a completion anymore.
2188 ;; Expected results:
2190 ;; "/x" "/[x" "/x@" "/[x@" "/x@y" "/[x@y"
2191 ;; [nil nil "x" nil] [nil "x" nil nil] [nil "x" "y" nil]
2192 ;; [nil "x" nil nil]
2193 ;; ["x" nil nil nil]
2195 ;; "/x:" "/x:y" "/x:y:"
2196 ;; [nil nil "x" ""] [nil nil "x" "y"] ["x" nil "y" ""]
2198 ;; ["x" nil "" nil] ["x" nil "y" nil]
2199 ;; ["x" "" nil nil] ["x" "y" nil nil]
2201 ;; "/x:y@" "/x:y@z" "/x:y@z:"
2202 ;; [nil nil "x" "y@"] [nil nil "x" "y@z"] ["x" "y" "z" ""]
2203 ;; "/[x/y@" "/[x/y@z"
2204 ;; ["x" nil "y" nil] ["x" "y" "z" nil]
2205 (defun tramp-completion-dissect-file-name (name)
2206 "Returns a list of `tramp-file-name' structures.
2207 They are collected by `tramp-completion-dissect-file-name1'."
2211 (tramp-completion-ipv6-regexp
2214 (if (zerop (length tramp-postfix-ipv6-format
))
2215 tramp-postfix-host-format
2216 tramp-postfix-ipv6-format
)))
2217 ;; "/method" "/[method"
2218 (tramp-completion-file-name-structure1
2219 (list (concat tramp-prefix-regexp
"\\(" tramp-method-regexp x-nil
"\\)$")
2222 (tramp-completion-file-name-structure2
2223 (list (concat tramp-prefix-regexp
"\\(" tramp-user-regexp x-nil
"\\)$")
2226 (tramp-completion-file-name-structure3
2227 (list (concat tramp-prefix-regexp
"\\(" tramp-host-regexp x-nil
"\\)$")
2229 ;; "/[ipv6" "/[ipv6"
2230 (tramp-completion-file-name-structure4
2231 (list (concat tramp-prefix-regexp
2232 tramp-prefix-ipv6-regexp
2233 "\\(" tramp-completion-ipv6-regexp x-nil
"\\)$")
2235 ;; "/user@host" "/[user@host"
2236 (tramp-completion-file-name-structure5
2237 (list (concat tramp-prefix-regexp
2238 "\\(" tramp-user-regexp
"\\)" tramp-postfix-user-regexp
2239 "\\(" tramp-host-regexp x-nil
"\\)$")
2241 ;; "/user@[ipv6" "/[user@ipv6"
2242 (tramp-completion-file-name-structure6
2243 (list (concat tramp-prefix-regexp
2244 "\\(" tramp-user-regexp
"\\)" tramp-postfix-user-regexp
2245 tramp-prefix-ipv6-regexp
2246 "\\(" tramp-completion-ipv6-regexp x-nil
"\\)$")
2248 ;; "/method:user" "/[method/user" "/method://user"
2249 (tramp-completion-file-name-structure7
2250 (list (concat tramp-prefix-regexp
2251 "\\(" tramp-method-regexp
"\\)" tramp-postfix-method-regexp
2252 "\\(" tramp-user-regexp x-nil
"\\)$")
2254 ;; "/method:host" "/[method/host" "/method://host"
2255 (tramp-completion-file-name-structure8
2256 (list (concat tramp-prefix-regexp
2257 "\\(" tramp-method-regexp
"\\)" tramp-postfix-method-regexp
2258 "\\(" tramp-host-regexp x-nil
"\\)$")
2260 ;; "/method:[ipv6" "/[method/ipv6" "/method://[ipv6"
2261 (tramp-completion-file-name-structure9
2262 (list (concat tramp-prefix-regexp
2263 "\\(" tramp-method-regexp
"\\)" tramp-postfix-method-regexp
2264 tramp-prefix-ipv6-regexp
2265 "\\(" tramp-completion-ipv6-regexp x-nil
"\\)$")
2267 ;; "/method:user@host" "/[method/user@host" "/method://user@host"
2268 (tramp-completion-file-name-structure10
2269 (list (concat tramp-prefix-regexp
2270 "\\(" tramp-method-regexp
"\\)" tramp-postfix-method-regexp
2271 "\\(" tramp-user-regexp
"\\)" tramp-postfix-user-regexp
2272 "\\(" tramp-host-regexp x-nil
"\\)$")
2274 ;; "/method:user@[ipv6" "/[method/user@ipv6" "/method://user@[ipv6"
2275 (tramp-completion-file-name-structure11
2276 (list (concat tramp-prefix-regexp
2277 "\\(" tramp-method-regexp
"\\)" tramp-postfix-method-regexp
2278 "\\(" tramp-user-regexp
"\\)" tramp-postfix-user-regexp
2279 tramp-prefix-ipv6-regexp
2280 "\\(" tramp-completion-ipv6-regexp x-nil
"\\)$")
2282 ;; "/method: "/method:/"
2283 (tramp-completion-file-name-structure12
2285 (if (equal tramp-syntax
'url
)
2286 (concat tramp-prefix-regexp
2287 "\\(" tramp-method-regexp
"\\)"
2288 "\\(" (substring tramp-postfix-method-regexp
0 1)
2289 "\\|" (substring tramp-postfix-method-regexp
1 2) "\\)"
2291 ;; Should not match if not URL syntax.
2292 (concat tramp-prefix-regexp
"/$"))
2294 ;; "/method: "/method:/"
2295 (tramp-completion-file-name-structure13
2297 (if (equal tramp-syntax
'url
)
2298 (concat tramp-prefix-regexp
2299 "\\(" tramp-method-regexp
"\\)"
2300 "\\(" (substring tramp-postfix-method-regexp
0 1)
2301 "\\|" (substring tramp-postfix-method-regexp
1 2) "\\)"
2303 ;; Should not match if not URL syntax.
2304 (concat tramp-prefix-regexp
"/$"))
2307 (mapc (lambda (regexp)
2308 (add-to-list 'result
2309 (tramp-completion-dissect-file-name1 regexp name
)))
2311 tramp-completion-file-name-structure1
2312 tramp-completion-file-name-structure2
2313 tramp-completion-file-name-structure3
2314 tramp-completion-file-name-structure4
2315 tramp-completion-file-name-structure5
2316 tramp-completion-file-name-structure6
2317 tramp-completion-file-name-structure7
2318 tramp-completion-file-name-structure8
2319 tramp-completion-file-name-structure9
2320 tramp-completion-file-name-structure10
2321 tramp-completion-file-name-structure11
2322 tramp-completion-file-name-structure12
2323 tramp-completion-file-name-structure13
2324 tramp-file-name-structure
))
2328 (defun tramp-completion-dissect-file-name1 (structure name
)
2329 "Returns a `tramp-file-name' structure matching STRUCTURE.
2330 The structure consists of remote method, remote user,
2331 remote host and localname (filename on remote host)."
2334 (when (string-match (nth 0 structure
) name
)
2335 (let ((method (and (nth 1 structure
)
2336 (match-string (nth 1 structure
) name
)))
2337 (user (and (nth 2 structure
)
2338 (match-string (nth 2 structure
) name
)))
2339 (host (and (nth 3 structure
)
2340 (match-string (nth 3 structure
) name
)))
2341 (localname (and (nth 4 structure
)
2342 (match-string (nth 4 structure
) name
))))
2343 (vector method user host localname
)))))
2345 ;; This function returns all possible method completions, adding the
2346 ;; trailing method delimiter.
2347 (defun tramp-get-completion-methods (partial-method)
2348 "Returns all method completions for PARTIAL-METHOD."
2352 (string-match (concat "^" (regexp-quote partial-method
)) method
)
2353 (tramp-completion-make-tramp-file-name method nil nil nil
)))
2354 (mapcar 'car tramp-methods
)))
2356 ;; Compares partial user and host names with possible completions.
2357 (defun tramp-get-completion-user-host (method partial-user partial-host user host
)
2358 "Returns the most expanded string for user and host name completion.
2359 PARTIAL-USER must match USER, PARTIAL-HOST must match HOST."
2362 ((and partial-user partial-host
)
2364 (string-match (concat "^" (regexp-quote partial-host
)) host
)
2365 (string-equal partial-user
(or user partial-user
)))
2366 (setq user partial-user
)
2373 (and user
(string-match (concat "^" (regexp-quote partial-user
)) user
))
2379 (and host
(string-match (concat "^" (regexp-quote partial-host
)) host
))
2385 (unless (zerop (+ (length user
) (length host
)))
2386 (tramp-completion-make-tramp-file-name method user host nil
)))
2388 ;;;###tramp-autoload
2389 (defun tramp-parse-rhosts (filename)
2390 "Return a list of (user host) tuples allowed to access.
2391 Either user or host may be nil."
2392 ;; On Windows, there are problems in completion when
2393 ;; `default-directory' is remote.
2394 (let ((default-directory (tramp-compat-temporary-file-directory))
2396 (when (file-readable-p filename
)
2398 (insert-file-contents filename
)
2399 (goto-char (point-min))
2401 (push (tramp-parse-rhosts-group) res
))))
2404 (defun tramp-parse-rhosts-group ()
2405 "Return a (user host) tuple allowed to access.
2406 Either user or host may be nil."
2410 "^\\(" tramp-host-regexp
"\\)"
2411 "\\([ \t]+" "\\(" tramp-user-regexp
"\\)" "\\)?")))
2412 (narrow-to-region (point) (point-at-eol))
2413 (when (re-search-forward regexp nil t
)
2414 (setq result
(append (list (match-string 3) (match-string 1)))))
2419 ;;;###tramp-autoload
2420 (defun tramp-parse-shosts (filename)
2421 "Return a list of (user host) tuples allowed to access.
2422 User is always nil."
2423 ;; On Windows, there are problems in completion when
2424 ;; `default-directory' is remote.
2425 (let ((default-directory (tramp-compat-temporary-file-directory))
2427 (when (file-readable-p filename
)
2429 (insert-file-contents filename
)
2430 (goto-char (point-min))
2432 (push (tramp-parse-shosts-group) res
))))
2435 (defun tramp-parse-shosts-group ()
2436 "Return a (user host) tuple allowed to access.
2437 User is always nil."
2439 (regexp (concat "^\\(" tramp-host-regexp
"\\)")))
2440 (narrow-to-region (point) (point-at-eol))
2441 (when (re-search-forward regexp nil t
)
2442 (setq result
(list nil
(match-string 1))))
2445 (> (skip-chars-forward ",") 0)
2449 ;;;###tramp-autoload
2450 (defun tramp-parse-sconfig (filename)
2451 "Return a list of (user host) tuples allowed to access.
2452 User is always nil."
2453 ;; On Windows, there are problems in completion when
2454 ;; `default-directory' is remote.
2455 (let ((default-directory (tramp-compat-temporary-file-directory))
2457 (when (file-readable-p filename
)
2459 (insert-file-contents filename
)
2460 (goto-char (point-min))
2462 (push (tramp-parse-sconfig-group) res
))))
2465 (defun tramp-parse-sconfig-group ()
2466 "Return a (user host) tuple allowed to access.
2467 User is always nil."
2469 (regexp (concat "^[ \t]*Host[ \t]+" "\\(" tramp-host-regexp
"\\)")))
2470 (narrow-to-region (point) (point-at-eol))
2471 (when (re-search-forward regexp nil t
)
2472 (setq result
(list nil
(match-string 1))))
2475 (> (skip-chars-forward ",") 0)
2479 ;;;###tramp-autoload
2480 (defun tramp-parse-shostkeys (dirname)
2481 "Return a list of (user host) tuples allowed to access.
2482 User is always nil."
2483 ;; On Windows, there are problems in completion when
2484 ;; `default-directory' is remote.
2485 (let* ((default-directory (tramp-compat-temporary-file-directory))
2486 (regexp (concat "^key_[0-9]+_\\(" tramp-host-regexp
"\\)\\.pub$"))
2487 (files (when (file-directory-p dirname
) (directory-files dirname
)))
2490 (when (string-match regexp
(car files
))
2491 (push (list nil
(match-string 1 (car files
))) result
))
2492 (setq files
(cdr files
)))
2495 (defun tramp-parse-sknownhosts (dirname)
2496 "Return a list of (user host) tuples allowed to access.
2497 User is always nil."
2498 ;; On Windows, there are problems in completion when
2499 ;; `default-directory' is remote.
2500 (let* ((default-directory (tramp-compat-temporary-file-directory))
2501 (regexp (concat "^\\(" tramp-host-regexp
2502 "\\)\\.ssh-\\(dss\\|rsa\\)\\.pub$"))
2503 (files (when (file-directory-p dirname
) (directory-files dirname
)))
2506 (when (string-match regexp
(car files
))
2507 (push (list nil
(match-string 1 (car files
))) result
))
2508 (setq files
(cdr files
)))
2511 ;;;###tramp-autoload
2512 (defun tramp-parse-hosts (filename)
2513 "Return a list of (user host) tuples allowed to access.
2514 User is always nil."
2515 ;; On Windows, there are problems in completion when
2516 ;; `default-directory' is remote.
2517 (let ((default-directory (tramp-compat-temporary-file-directory))
2519 (when (file-readable-p filename
)
2521 (insert-file-contents filename
)
2522 (goto-char (point-min))
2524 (push (tramp-parse-hosts-group) res
))))
2527 (defun tramp-parse-hosts-group ()
2528 "Return a (user host) tuple allowed to access.
2529 User is always nil."
2532 (concat "^\\(" tramp-ipv6-regexp
"\\|" tramp-host-regexp
"\\)")))
2533 (narrow-to-region (point) (point-at-eol))
2534 (when (re-search-forward regexp nil t
)
2535 (setq result
(list nil
(match-string 1))))
2538 (> (skip-chars-forward " \t") 0)
2542 ;; For su-alike methods it would be desirable to return "root@localhost"
2543 ;; as default. Unfortunately, we have no information whether any user name
2544 ;; has been typed already. So we use `tramp-current-user' as indication,
2545 ;; assuming it is set in `tramp-completion-handle-file-name-all-completions'.
2546 ;;;###tramp-autoload
2547 (defun tramp-parse-passwd (filename)
2548 "Return a list of (user host) tuples allowed to access.
2549 Host is always \"localhost\"."
2550 ;; On Windows, there are problems in completion when
2551 ;; `default-directory' is remote.
2552 (let ((default-directory (tramp-compat-temporary-file-directory))
2554 (if (zerop (length tramp-current-user
))
2556 (when (file-readable-p filename
)
2558 (insert-file-contents filename
)
2559 (goto-char (point-min))
2561 (push (tramp-parse-passwd-group) res
))))
2564 (defun tramp-parse-passwd-group ()
2565 "Return a (user host) tuple allowed to access.
2566 Host is always \"localhost\"."
2568 (regexp (concat "^\\(" tramp-user-regexp
"\\):")))
2569 (narrow-to-region (point) (point-at-eol))
2570 (when (re-search-forward regexp nil t
)
2571 (setq result
(list (match-string 1) "localhost")))
2576 ;;;###tramp-autoload
2577 (defun tramp-parse-netrc (filename)
2578 "Return a list of (user host) tuples allowed to access.
2580 ;; On Windows, there are problems in completion when
2581 ;; `default-directory' is remote.
2582 (let ((default-directory (tramp-compat-temporary-file-directory))
2584 (when (file-readable-p filename
)
2586 (insert-file-contents filename
)
2587 (goto-char (point-min))
2589 (push (tramp-parse-netrc-group) res
))))
2592 (defun tramp-parse-netrc-group ()
2593 "Return a (user host) tuple allowed to access.
2598 "^[ \t]*machine[ \t]+" "\\(" tramp-host-regexp
"\\)"
2599 "\\([ \t]+login[ \t]+" "\\(" tramp-user-regexp
"\\)" "\\)?")))
2600 (narrow-to-region (point) (point-at-eol))
2601 (when (re-search-forward regexp nil t
)
2602 (setq result
(list (match-string 3) (match-string 1))))
2607 ;;;###tramp-autoload
2608 (defun tramp-parse-putty (registry)
2609 "Return a list of (user host) tuples allowed to access.
2610 User is always nil."
2611 ;; On Windows, there are problems in completion when
2612 ;; `default-directory' is remote.
2613 (let ((default-directory (tramp-compat-temporary-file-directory))
2616 (when (zerop (tramp-compat-call-process "reg" nil t nil
"query" registry
))
2617 (goto-char (point-min))
2619 (push (tramp-parse-putty-group registry
) res
))))
2622 (defun tramp-parse-putty-group (registry)
2623 "Return a (user host) tuple allowed to access.
2624 User is always nil."
2626 (regexp (concat (regexp-quote registry
) "\\\\\\(.+\\)")))
2627 (narrow-to-region (point) (point-at-eol))
2628 (when (re-search-forward regexp nil t
)
2629 (setq result
(list nil
(match-string 1))))
2634 ;;; Common file name handler functions for different backends:
2636 (defvar tramp-handle-file-local-copy-hook nil
2637 "Normal hook to be run at the end of `tramp-*-handle-file-local-copy'.")
2639 (defvar tramp-handle-write-region-hook nil
2640 "Normal hook to be run at the end of `tramp-*-handle-write-region'.")
2642 (defun tramp-handle-directory-file-name (directory)
2643 "Like `directory-file-name' for Tramp files."
2644 ;; If localname component of filename is "/", leave it unchanged.
2645 ;; Otherwise, remove any trailing slash from localname component.
2646 ;; Method, host, etc, are unchanged. Does it make sense to try
2647 ;; to avoid parsing the filename?
2648 (with-parsed-tramp-file-name directory nil
2649 (if (and (not (zerop (length localname
)))
2650 (eq (aref localname
(1- (length localname
))) ?
/)
2651 (not (string= localname
"/")))
2652 (substring directory
0 -
1)
2655 (defun tramp-handle-directory-files
2656 (directory &optional full match nosort files-only
)
2657 "Like `directory-files' for Tramp files."
2658 ;; FILES-ONLY is valid for XEmacs only.
2659 (when (file-directory-p directory
)
2660 (setq directory
(file-name-as-directory (expand-file-name directory
)))
2661 (let ((temp (nreverse (file-name-all-completions "" directory
)))
2665 (setq item
(directory-file-name (pop temp
)))
2666 (when (and (or (null match
) (string-match match item
))
2667 (or (null files-only
)
2669 (and (equal files-only t
) (file-regular-p item
))
2670 ;; Directories only.
2671 (file-directory-p item
)))
2672 (push (if full
(concat directory item
) item
)
2674 (if nosort result
(sort result
'string
<)))))
2676 (defun tramp-handle-directory-files-and-attributes
2677 (directory &optional full match nosort id-format
)
2678 "Like `directory-files-and-attributes' for Tramp files."
2681 (cons x
(tramp-compat-file-attributes
2682 (if full x
(expand-file-name x directory
)) id-format
)))
2683 (directory-files directory full match nosort
)))
2685 (defun tramp-handle-dired-uncache (dir &optional dir-p
)
2686 "Like `dired-uncache' for Tramp files."
2687 ;; DIR-P is valid for XEmacs only.
2688 (with-parsed-tramp-file-name
2689 (if (or dir-p
(file-directory-p dir
)) dir
(file-name-directory dir
)) nil
2690 (tramp-flush-directory-property v localname
)))
2692 (defun tramp-handle-file-exists-p (filename)
2693 "Like `file-exists-p' for Tramp files."
2694 (not (null (file-attributes filename
))))
2696 (defun tramp-handle-file-modes (filename)
2697 "Like `file-modes' for Tramp files."
2698 (let ((truename (or (file-truename filename
) filename
)))
2699 (when (file-exists-p truename
)
2700 (tramp-mode-string-to-int (nth 8 (file-attributes truename
))))))
2702 ;; Localname manipulation functions that grok Tramp localnames...
2703 (defun tramp-handle-file-name-as-directory (file)
2704 "Like `file-name-as-directory' but aware of Tramp files."
2705 ;; `file-name-as-directory' would be sufficient except localname is
2706 ;; the empty string.
2707 (let ((v (tramp-dissect-file-name file t
)))
2708 ;; Run the command on the localname portion only.
2709 (tramp-make-tramp-file-name
2710 (tramp-file-name-method v
)
2711 (tramp-file-name-user v
)
2712 (tramp-file-name-host v
)
2713 (tramp-run-real-handler
2714 'file-name-as-directory
(list (or (tramp-file-name-localname v
) ""))))))
2716 (defun tramp-handle-file-name-completion
2717 (filename directory
&optional predicate
)
2718 "Like `file-name-completion' for Tramp files."
2719 (unless (tramp-tramp-file-p directory
)
2721 "tramp-handle-file-name-completion invoked on non-tramp directory `%s'"
2725 (mapcar 'list
(file-name-all-completions filename directory
))
2727 (lambda (x) (funcall predicate
(expand-file-name (car x
) directory
))))))
2729 (defun tramp-handle-file-name-directory (file)
2730 "Like `file-name-directory' but aware of Tramp files."
2731 ;; Everything except the last filename thing is the directory. We
2732 ;; cannot apply `with-parsed-tramp-file-name', because this expands
2733 ;; the remote file name parts. This is a problem when we are in
2734 ;; file name completion.
2735 (let ((v (tramp-dissect-file-name file t
)))
2736 ;; Run the command on the localname portion only.
2737 (tramp-make-tramp-file-name
2738 (tramp-file-name-method v
)
2739 (tramp-file-name-user v
)
2740 (tramp-file-name-host v
)
2741 (tramp-run-real-handler
2742 'file-name-directory
(list (or (tramp-file-name-localname v
) ""))))))
2744 (defun tramp-handle-file-name-nondirectory (file)
2745 "Like `file-name-nondirectory' but aware of Tramp files."
2746 (with-parsed-tramp-file-name file nil
2747 (tramp-run-real-handler 'file-name-nondirectory
(list localname
))))
2749 (defun tramp-handle-file-newer-than-file-p (file1 file2
)
2750 "Like `file-newer-than-file-p' for Tramp files."
2752 ((not (file-exists-p file1
)) nil
)
2753 ((not (file-exists-p file2
)) t
)
2754 (t (tramp-time-less-p (nth 5 (file-attributes file2
))
2755 (nth 5 (file-attributes file1
))))))
2757 (defun tramp-handle-file-regular-p (filename)
2758 "Like `file-regular-p' for Tramp files."
2759 (and (file-exists-p filename
)
2760 (eq ?-
(aref (nth 8 (file-attributes filename
)) 0))))
2762 (defun tramp-handle-file-remote-p (filename &optional identification connected
)
2763 "Like `file-remote-p' for Tramp files."
2764 (let ((tramp-verbose 3))
2765 (when (tramp-tramp-file-p filename
)
2766 (let* ((v (tramp-dissect-file-name filename
))
2767 (p (tramp-get-connection-process v
))
2768 (c (and p
(processp p
) (memq (process-status p
) '(run open
)))))
2769 ;; We expand the file name only, if there is already a connection.
2770 (with-parsed-tramp-file-name
2771 (if c
(expand-file-name filename
) filename
) nil
2772 (and (or (not connected
) c
)
2774 ((eq identification
'method
) method
)
2775 ((eq identification
'user
) user
)
2776 ((eq identification
'host
) host
)
2777 ((eq identification
'localname
) localname
)
2778 (t (tramp-make-tramp-file-name method user host
"")))))))))
2780 (defun tramp-handle-file-symlink-p (filename)
2781 "Like `file-symlink-p' for Tramp files."
2782 (with-parsed-tramp-file-name filename nil
2783 (let ((x (car (file-attributes filename
))))
2785 ;; When Tramp is running on VMS, then `file-name-absolute-p'
2786 ;; might do weird things.
2787 (if (file-name-absolute-p x
)
2788 (tramp-make-tramp-file-name method user host x
)
2791 (defun tramp-handle-find-backup-file-name (filename)
2792 "Like `find-backup-file-name' for Tramp files."
2793 (with-parsed-tramp-file-name filename nil
2794 ;; We set both variables. It doesn't matter whether it is
2796 (let ((backup-directory-alist
2798 (when (boundp 'backup-directory-alist
)
2799 (if (symbol-value 'tramp-backup-directory-alist
)
2804 (if (and (stringp (cdr x
))
2805 (file-name-absolute-p (cdr x
))
2806 (not (tramp-file-name-p (cdr x
))))
2807 (tramp-make-tramp-file-name method user host
(cdr x
))
2809 (symbol-value 'tramp-backup-directory-alist
))
2810 (symbol-value 'backup-directory-alist
))))
2812 (bkup-backup-directory-info
2814 (when (boundp 'bkup-backup-directory-info
)
2815 (if (symbol-value 'tramp-bkup-backup-directory-info
)
2821 (if (and (stringp (car (cdr x
)))
2822 (file-name-absolute-p (car (cdr x
)))
2823 (not (tramp-file-name-p (car (cdr x
)))))
2824 (tramp-make-tramp-file-name
2825 method user host
(car (cdr x
)))
2828 (symbol-value 'tramp-bkup-backup-directory-info
))
2829 (symbol-value 'bkup-backup-directory-info
)))))
2831 (tramp-run-real-handler 'find-backup-file-name
(list filename
)))))
2833 (defun tramp-handle-insert-file-contents
2834 (filename &optional visit beg end replace
)
2835 "Like `insert-file-contents' for Tramp files."
2836 (barf-if-buffer-read-only)
2837 (setq filename
(expand-file-name filename
))
2838 (let (result local-copy remote-copy
)
2839 (with-parsed-tramp-file-name filename nil
2841 (if (not (file-exists-p filename
))
2842 ;; We don't raise a Tramp error, because it might be
2843 ;; suppressed, like in `find-file-noselect-1'.
2845 (list "File not found on remote host" filename
))
2847 (if (and (tramp-local-host-p v
)
2848 (let (file-name-handler-alist)
2849 (file-readable-p localname
)))
2850 ;; Short track: if we are on the local host, we can
2853 (tramp-run-real-handler
2854 'insert-file-contents
2855 (list localname visit beg end replace
)))
2857 ;; When we shall insert only a part of the file, we copy
2860 (setq remote-copy
(tramp-make-tramp-temp-file v
))
2861 ;; This is defined in tramp-sh.el. Let's assume this
2862 ;; is loaded already.
2863 (tramp-compat-funcall 'tramp-send-command
2867 (format "dd bs=1 skip=%d if=%s count=%d of=%s"
2868 beg
(tramp-shell-quote-argument localname
)
2869 (- end beg
) remote-copy
))
2871 (format "dd bs=1 skip=%d if=%s of=%s"
2872 beg
(tramp-shell-quote-argument localname
)
2875 (format "dd bs=1 count=%d if=%s of=%s"
2876 end
(tramp-shell-quote-argument localname
)
2879 ;; `insert-file-contents-literally' takes care to avoid
2880 ;; calling jka-compr. By let-binding
2881 ;; `inhibit-file-name-operation', we propagate that care
2882 ;; to the `file-local-copy' operation.
2884 (let ((inhibit-file-name-operation
2885 (when (eq inhibit-file-name-operation
2886 'insert-file-contents
)
2889 ((stringp remote-copy
)
2891 (tramp-make-tramp-file-name
2892 method user host remote-copy
)))
2893 ((stringp tramp-temp-buffer-file-name
)
2894 (copy-file filename tramp-temp-buffer-file-name
'ok
)
2895 tramp-temp-buffer-file-name
)
2896 (t (file-local-copy filename
)))))
2898 ;; When the file is not readable for the owner, it
2899 ;; cannot be inserted, even if it is readable for the
2900 ;; group or for everybody.
2901 (set-file-modes local-copy
(tramp-compat-octal-to-decimal "0600"))
2903 (when (and (null remote-copy
)
2904 (tramp-get-method-parameter
2905 method
'tramp-copy-keep-tmpfile
))
2906 ;; We keep the local file for performance reasons,
2907 ;; useful for "rsync".
2908 (setq tramp-temp-buffer-file-name local-copy
))
2910 (tramp-with-progress-reporter
2911 v
3 (format "Inserting local temp file `%s'" local-copy
)
2912 ;; We must ensure that `file-coding-system-alist'
2913 ;; matches `local-copy'.
2914 (let ((file-coding-system-alist
2915 (tramp-find-file-name-coding-system-alist
2916 filename local-copy
)))
2918 (insert-file-contents
2919 local-copy nil nil nil replace
))))))
2924 (setq buffer-file-name filename
)
2925 (setq buffer-read-only
(not (file-writable-p filename
)))
2926 (set-visited-file-modtime)
2927 (set-buffer-modified-p nil
))
2928 (when (and (stringp local-copy
)
2929 (or remote-copy
(null tramp-temp-buffer-file-name
)))
2930 (delete-file local-copy
))
2931 (when (stringp remote-copy
)
2933 (tramp-make-tramp-file-name method user host remote-copy
))))))
2936 (list (expand-file-name filename
)
2939 (defun tramp-handle-load (file &optional noerror nomessage nosuffix must-suffix
)
2940 "Like `load' for Tramp files."
2941 (with-parsed-tramp-file-name (expand-file-name file
) nil
2943 (cond ((file-exists-p (concat file
".elc"))
2944 (setq file
(concat file
".elc")))
2945 ((file-exists-p (concat file
".el"))
2946 (setq file
(concat file
".el")))))
2948 ;; The first condition is always true for absolute file names.
2949 ;; Included for safety's sake.
2950 (unless (or (file-name-directory file
)
2951 (string-match "\\.elc?\\'" file
))
2954 "File `%s' does not include a `.el' or `.elc' suffix" file
)))
2956 (when (not (file-exists-p file
))
2957 (tramp-error v
'file-error
"Cannot load nonexistent file `%s'" file
)))
2958 (if (not (file-exists-p file
))
2960 (let ((tramp-message-show-message (not nomessage
)))
2961 (tramp-with-progress-reporter v
0 (format "Loading %s" file
)
2962 (let ((local-copy (file-local-copy file
)))
2963 ;; MUST-SUFFIX doesn't exist on XEmacs, so let it default to nil.
2965 (load local-copy noerror t t
)
2966 (delete-file local-copy
)))))
2969 (defun tramp-handle-shell-command
2970 (command &optional output-buffer error-buffer
)
2971 "Like `shell-command' for Tramp files."
2972 (let* ((asynchronous (string-match "[ \t]*&[ \t]*\\'" command
))
2973 ;; We cannot use `shell-file-name' and `shell-command-switch',
2974 ;; they are variables of the local host.
2977 (tramp-get-method-parameter
2978 (tramp-file-name-method
2979 (tramp-dissect-file-name default-directory
))
2980 'tramp-remote-shell
)
2981 (tramp-get-method-parameter
2982 (tramp-file-name-method
2983 (tramp-dissect-file-name default-directory
))
2984 'tramp-remote-shell-args
))
2985 (list (substring command
0 asynchronous
))))
2989 ((bufferp output-buffer
) output-buffer
)
2990 ((stringp output-buffer
) (get-buffer-create output-buffer
))
2992 (setq current-buffer-p t
)
2994 (t (get-buffer-create
2996 "*Async Shell Command*"
2997 "*Shell Command Output*")))))
3000 ((bufferp error-buffer
) error-buffer
)
3001 ((stringp error-buffer
) (get-buffer-create error-buffer
))))
3003 (if (and (not asynchronous
) error-buffer
)
3004 (with-parsed-tramp-file-name default-directory nil
3005 (list output-buffer
(tramp-make-tramp-temp-file v
)))
3007 (p (get-buffer-process output-buffer
)))
3009 ;; Check whether there is another process running. Tramp does not
3010 ;; support 2 (asynchronous) processes in parallel.
3012 (if (yes-or-no-p "A command is running. Kill it? ")
3013 (ignore-errors (kill-process p
))
3014 (error "Shell command in progress")))
3016 (if current-buffer-p
3018 (barf-if-buffer-read-only)
3020 (with-current-buffer output-buffer
3021 (setq buffer-read-only nil
)
3024 (if (and (not current-buffer-p
) (integerp asynchronous
))
3027 (setq p
(apply 'start-file-process
"*Async Shell*" buffer args
))
3029 (pop-to-buffer output-buffer
)
3030 (setq mode-line-process
'(":%s"))
3032 (set-process-sentinel p
'shell-command-sentinel
)
3033 (set-process-filter p
'comint-output-filter
))
3037 (apply 'process-file
(car args
) nil buffer nil
(cdr args
))
3038 ;; Insert error messages if they were separated.
3039 (when (listp buffer
)
3040 (with-current-buffer error-buffer
3041 (insert-file-contents (cadr buffer
)))
3042 (delete-file (cadr buffer
)))
3043 (if current-buffer-p
3044 ;; This is like exchange-point-and-mark, but doesn't
3045 ;; activate the mark. It is cleaner to avoid activation,
3046 ;; even though the command loop would deactivate the mark
3047 ;; because we inserted text.
3048 (goto-char (prog1 (mark t
)
3049 (set-marker (mark-marker) (point)
3051 ;; There's some output, display it.
3052 (when (with-current-buffer output-buffer
(> (point-max) (point-min)))
3053 (if (functionp 'display-message-or-buffer
)
3054 (tramp-compat-funcall 'display-message-or-buffer output-buffer
)
3055 (pop-to-buffer output-buffer
))))))))
3057 (defun tramp-handle-substitute-in-file-name (filename)
3058 "Like `substitute-in-file-name' for Tramp files.
3059 \"//\" and \"/~\" substitute only in the local filename part.
3060 If the URL Tramp syntax is chosen, \"//\" as method delimiter and \"/~\" at
3061 beginning of local filename are not substituted."
3062 ;; First, we must replace environment variables.
3063 (setq filename
(tramp-replace-environment-variables filename
))
3064 (with-parsed-tramp-file-name filename nil
3065 (if (equal tramp-syntax
'url
)
3066 ;; We need to check localname only. The other parts cannot contain
3068 (if (and (> (length localname
) 1)
3069 (or (string-match "//" localname
)
3070 (string-match "/~" localname
1)))
3071 (tramp-run-real-handler 'substitute-in-file-name
(list filename
))
3072 (tramp-make-tramp-file-name
3073 (when method
(substitute-in-file-name method
))
3074 (when user
(substitute-in-file-name user
))
3075 (when host
(substitute-in-file-name host
))
3077 (tramp-run-real-handler
3078 'substitute-in-file-name
(list localname
)))))
3079 ;; Ignore in LOCALNAME everything before "//" or "/~".
3080 (when (and (stringp localname
) (string-match ".+?/\\(/\\|~\\)" localname
))
3082 (concat (file-remote-p filename
)
3083 (replace-match "\\1" nil nil localname
)))
3084 ;; "/m:h:~" does not work for completion. We use "/m:h:~/".
3085 (when (string-match "~$" filename
)
3086 (setq filename
(concat filename
"/"))))
3087 (tramp-run-real-handler 'substitute-in-file-name
(list filename
)))))
3089 (defun tramp-handle-unhandled-file-name-directory (filename)
3090 "Like `unhandled-file-name-directory' for Tramp files."
3091 ;; With Emacs 23, we could simply return `nil'. But we must keep it
3092 ;; for backward compatibility.
3093 (expand-file-name "~/"))
3095 ;;; Functions for establishing connection:
3097 ;; The following functions are actions to be taken when seeing certain
3098 ;; prompts from the remote host. See the variable
3099 ;; `tramp-actions-before-shell' for usage of these functions.
3101 (defun tramp-action-login (proc vec
)
3102 "Send the login name."
3103 (when (not (stringp tramp-current-user
))
3104 (save-window-excursion
3105 (let ((enable-recursive-minibuffers t
))
3106 (pop-to-buffer (tramp-get-connection-buffer vec
))
3107 (setq tramp-current-user
(read-string (match-string 0))))))
3108 (tramp-message vec
3 "Sending login name `%s'" tramp-current-user
)
3109 (with-current-buffer (tramp-get-connection-buffer vec
)
3110 (tramp-message vec
6 "\n%s" (buffer-string)))
3111 (tramp-send-string vec tramp-current-user
))
3113 (defun tramp-action-password (proc vec
)
3114 "Query the user for a password."
3115 (with-current-buffer (process-buffer proc
)
3116 (tramp-check-for-regexp proc tramp-password-prompt-regexp
)
3117 (tramp-message vec
3 "Sending %s" (match-string 1))
3118 (tramp-enter-password proc
)
3119 ;; Hide password prompt.
3120 (narrow-to-region (point-max) (point-max))))
3122 (defun tramp-action-succeed (proc vec
)
3123 "Signal success in finding shell prompt."
3124 (throw 'tramp-action
'ok
))
3126 (defun tramp-action-permission-denied (proc vec
)
3127 "Signal permission denied."
3129 (throw 'tramp-action
'permission-denied
))
3131 (defun tramp-action-yesno (proc vec
)
3132 "Ask the user for confirmation using `yes-or-no-p'.
3133 Send \"yes\" to remote process on confirmation, abort otherwise.
3134 See also `tramp-action-yn'."
3135 (save-window-excursion
3136 (let ((enable-recursive-minibuffers t
))
3137 (save-match-data (pop-to-buffer (tramp-get-connection-buffer vec
)))
3138 (unless (yes-or-no-p (match-string 0))
3140 (throw 'tramp-action
'permission-denied
))
3141 (with-current-buffer (tramp-get-connection-buffer vec
)
3142 (tramp-message vec
6 "\n%s" (buffer-string)))
3143 (tramp-send-string vec
"yes"))))
3145 (defun tramp-action-yn (proc vec
)
3146 "Ask the user for confirmation using `y-or-n-p'.
3147 Send \"y\" to remote process on confirmation, abort otherwise.
3148 See also `tramp-action-yesno'."
3149 (save-window-excursion
3150 (let ((enable-recursive-minibuffers t
))
3151 (save-match-data (pop-to-buffer (tramp-get-connection-buffer vec
)))
3152 (unless (y-or-n-p (match-string 0))
3154 (throw 'tramp-action
'permission-denied
))
3155 (with-current-buffer (tramp-get-connection-buffer vec
)
3156 (tramp-message vec
6 "\n%s" (buffer-string)))
3157 (tramp-send-string vec
"y"))))
3159 (defun tramp-action-terminal (proc vec
)
3160 "Tell the remote host which terminal type to use.
3161 The terminal type can be configured with `tramp-terminal-type'."
3162 (tramp-message vec
5 "Setting `%s' as terminal type." tramp-terminal-type
)
3163 (with-current-buffer (tramp-get-connection-buffer vec
)
3164 (tramp-message vec
6 "\n%s" (buffer-string)))
3165 (tramp-send-string vec tramp-terminal-type
))
3167 (defun tramp-action-process-alive (proc vec
)
3168 "Check, whether a process has finished."
3169 (unless (memq (process-status proc
) '(run open
))
3170 (throw 'tramp-action
'process-died
)))
3172 (defun tramp-action-out-of-band (proc vec
)
3173 "Check, whether an out-of-band copy has finished."
3174 (cond ((and (memq (process-status proc
) '(stop exit
))
3175 (zerop (process-exit-status proc
)))
3176 (tramp-message vec
3 "Process has finished.")
3177 (throw 'tramp-action
'ok
))
3178 ((or (and (memq (process-status proc
) '(stop exit
))
3179 (not (zerop (process-exit-status proc
))))
3180 (memq (process-status proc
) '(signal)))
3181 ;; `scp' could have copied correctly, but set modes could have failed.
3182 ;; This can be ignored.
3183 (with-current-buffer (process-buffer proc
)
3184 (goto-char (point-min))
3185 (if (re-search-forward tramp-operation-not-permitted-regexp nil t
)
3187 (tramp-message vec
5 "'set mode' error ignored.")
3188 (tramp-message vec
3 "Process has finished.")
3189 (throw 'tramp-action
'ok
))
3190 (tramp-message vec
3 "Process has died.")
3191 (throw 'tramp-action
'process-died
))))
3194 ;;; Functions for processing the actions:
3196 (defun tramp-process-one-action (proc vec actions
)
3197 "Wait for output from the shell and perform one action."
3198 (let (found todo item pattern action
)
3200 ;; Reread output once all actions have been performed.
3201 ;; Obviously, the output was not complete.
3202 (tramp-accept-process-output proc
1)
3205 (setq item
(pop todo
))
3206 (setq pattern
(format "\\(%s\\)\\'" (symbol-value (nth 0 item
))))
3207 (setq action
(nth 1 item
))
3209 vec
5 "Looking for regexp \"%s\" from remote shell" pattern
)
3210 (when (tramp-check-for-regexp proc pattern
)
3211 (tramp-message vec
5 "Call `%s'" (symbol-name action
))
3212 (setq found
(funcall action proc vec
)))))
3215 (defun tramp-process-actions (proc vec pos actions
&optional timeout
)
3216 "Perform ACTIONS until success or TIMEOUT.
3217 PROC and VEC indicate the remote connection to be used. POS, if
3218 set, is the starting point of the region to be deleted in the
3220 ;; Preserve message for `progress-reporter'.
3221 (tramp-compat-with-temp-message ""
3222 ;; Enable auth-source and password-cache. We must use
3223 ;; tramp-current-* variables in case we have several hops.
3224 (tramp-set-connection-property
3225 (tramp-dissect-file-name
3226 (tramp-make-tramp-file-name
3227 tramp-current-method tramp-current-user tramp-current-host
""))
3228 "first-password-request" t
)
3232 (tramp-message proc
3 "Waiting for prompts from remote shell")
3234 (catch 'tramp-action
3236 (with-timeout (timeout)
3237 (tramp-process-one-action proc vec actions
))
3238 (tramp-process-one-action proc vec actions
)))))
3239 (with-current-buffer (tramp-get-connection-buffer vec
)
3241 (tramp-message vec
6 "\n%s" (buffer-string)))
3242 (unless (eq exit
'ok
)
3243 (tramp-clear-passwd vec
)
3244 (tramp-error-with-buffer
3247 ((eq exit
'permission-denied
) "Permission denied")
3248 ((eq exit
'process-died
) "Process died")
3249 (t "Login failed"))))
3251 (with-current-buffer (tramp-get-connection-buffer vec
)
3252 (let (buffer-read-only) (delete-region pos
(point)))))))))
3254 :;; Utility functions:
3256 (defun tramp-accept-process-output (&optional proc timeout timeout-msecs
)
3257 "Like `accept-process-output' for Tramp processes.
3258 This is needed in order to hide `last-coding-system-used', which is set
3259 for process communication also."
3260 (with-current-buffer (process-buffer proc
)
3261 (tramp-message proc
10 "%s %s" proc
(process-status proc
))
3262 (let (buffer-read-only last-coding-system-used
)
3263 ;; Under Windows XP, accept-process-output doesn't return
3264 ;; sometimes. So we add an additional timeout.
3265 (with-timeout ((or timeout
1))
3266 (accept-process-output proc timeout timeout-msecs
)))
3267 (tramp-message proc
10 "\n%s" (buffer-string))))
3269 (defun tramp-check-for-regexp (proc regexp
)
3270 "Check, whether REGEXP is contained in process buffer of PROC.
3271 Erase echoed commands if exists."
3272 (with-current-buffer (process-buffer proc
)
3273 (goto-char (point-min))
3275 ;; Check whether we need to remove echo output.
3276 (when (and (tramp-get-connection-property proc
"check-remote-echo" nil
)
3277 (re-search-forward tramp-echoed-echo-mark-regexp nil t
))
3278 (let ((begin (match-beginning 0)))
3279 (when (re-search-forward tramp-echoed-echo-mark-regexp nil t
)
3280 ;; Discard echo from remote output.
3281 (tramp-set-connection-property proc
"check-remote-echo" nil
)
3282 (tramp-message proc
5 "echo-mark found")
3284 (delete-region begin
(point))
3285 (goto-char (point-min)))))
3287 (when (or (not (tramp-get-connection-property proc
"check-remote-echo" nil
))
3288 ;; Sometimes, the echo string is suppressed on the remote side.
3290 (tramp-compat-funcall
3291 'substring-no-properties tramp-echo-mark-marker
3292 0 (min tramp-echo-mark-marker-length
(1- (point-max))))
3293 (tramp-compat-funcall
3294 'buffer-substring-no-properties
3295 1 (min (1+ tramp-echo-mark-marker-length
) (point-max))))))
3296 ;; No echo to be handled, now we can look for the regexp.
3297 (goto-char (point-min))
3298 (re-search-forward regexp nil t
))))
3300 (defun tramp-wait-for-regexp (proc timeout regexp
)
3301 "Wait for a REGEXP to appear from process PROC within TIMEOUT seconds.
3302 Expects the output of PROC to be sent to the current buffer. Returns
3303 the string that matched, or nil. Waits indefinitely if TIMEOUT is
3305 (with-current-buffer (process-buffer proc
)
3306 (let ((found (tramp-check-for-regexp proc regexp
))
3307 (start-time (current-time)))
3309 ;; Work around a bug in XEmacs 21, where the timeout
3310 ;; expires faster than it should. This degenerates
3311 ;; to polling for buggy XEmacsen, but oh, well.
3312 (while (and (not found
)
3313 (< (tramp-time-diff (current-time) start-time
)
3315 (with-timeout (timeout)
3317 (tramp-accept-process-output proc
1)
3318 (unless (memq (process-status proc
) '(run open
))
3319 (tramp-error-with-buffer
3320 nil proc
'file-error
"Process has died"))
3321 (setq found
(tramp-check-for-regexp proc regexp
))))))
3324 (tramp-accept-process-output proc
1)
3325 (unless (memq (process-status proc
) '(run open
))
3326 (tramp-error-with-buffer
3327 nil proc
'file-error
"Process has died"))
3328 (setq found
(tramp-check-for-regexp proc regexp
)))))
3329 (tramp-message proc
6 "\n%s" (buffer-string))
3333 proc
'file-error
"[[Regexp `%s' not found in %d secs]]"
3335 (tramp-error proc
'file-error
"[[Regexp `%s' not found]]" regexp
)))
3338 ;; We don't call `tramp-send-string' in order to hide the password
3339 ;; from the debug buffer, and because end-of-line handling of the
3341 (defun tramp-enter-password (proc)
3342 "Prompt for a password and send it to the remote end."
3343 (process-send-string
3344 proc
(concat (tramp-read-passwd proc
)
3345 (or (tramp-get-method-parameter
3346 tramp-current-method
3347 'tramp-password-end-of-line
)
3348 tramp-default-password-end-of-line
))))
3350 ;; It seems that Tru64 Unix does not like it if long strings are sent
3351 ;; to it in one go. (This happens when sending the Perl
3352 ;; `file-attributes' implementation, for instance.) Therefore, we
3353 ;; have this function which sends the string in chunks.
3354 (defun tramp-send-string (vec string
)
3355 "Send the STRING via connection VEC.
3357 The STRING is expected to use Unix line-endings, but the lines sent to
3358 the remote host use line-endings as defined in the variable
3359 `tramp-rsh-end-of-line'. The communication buffer is erased before sending."
3360 (let* ((p (tramp-get-connection-process vec
))
3361 (chunksize (tramp-get-connection-property p
"chunksize" nil
)))
3364 vec
'file-error
"Can't send string to remote host -- not logged in"))
3365 (tramp-set-connection-property p
"last-cmd-time" (current-time))
3366 (tramp-message vec
10 "%s" string
)
3367 (with-current-buffer (tramp-get-connection-buffer vec
)
3368 ;; Clean up the buffer. We cannot call `erase-buffer' because
3369 ;; narrowing might be in effect.
3370 (let (buffer-read-only) (delete-region (point-min) (point-max)))
3371 ;; Replace "\n" by `tramp-rsh-end-of-line'.
3373 (mapconcat 'identity
3374 (tramp-compat-split-string string
"\n")
3375 tramp-rsh-end-of-line
))
3376 (unless (or (string= string
"")
3377 (string-equal (substring string -
1) tramp-rsh-end-of-line
))
3378 (setq string
(concat string tramp-rsh-end-of-line
)))
3380 (if (and chunksize
(not (zerop chunksize
)))
3382 (end (length string
)))
3385 vec
10 "Sending chunk from %s to %s"
3386 pos
(min (+ pos chunksize
) end
))
3387 (process-send-string
3388 p
(substring string pos
(min (+ pos chunksize
) end
)))
3389 (setq pos
(+ pos chunksize
))))
3390 (process-send-string p string
)))))
3392 (defun tramp-get-inode (vec)
3393 "Returns the virtual inode number.
3394 If it doesn't exist, generate a new one."
3395 (let ((string (tramp-make-tramp-file-name
3396 (tramp-file-name-method vec
)
3397 (tramp-file-name-user vec
)
3398 (tramp-file-name-host vec
)
3400 (unless (assoc string tramp-inodes
)
3401 (add-to-list 'tramp-inodes
3402 (list string
(length tramp-inodes
))))
3403 (nth 1 (assoc string tramp-inodes
))))
3405 (defun tramp-get-device (vec)
3406 "Returns the virtual device number.
3407 If it doesn't exist, generate a new one."
3408 (let ((string (tramp-make-tramp-file-name
3409 (tramp-file-name-method vec
)
3410 (tramp-file-name-user vec
)
3411 (tramp-file-name-host vec
)
3413 (unless (assoc string tramp-devices
)
3414 (add-to-list 'tramp-devices
3415 (list string
(length tramp-devices
))))
3416 (cons -
1 (nth 1 (assoc string tramp-devices
)))))
3418 (defun tramp-equal-remote (file1 file2
)
3419 "Check, whether the remote parts of FILE1 and FILE2 are identical.
3420 The check depends on method, user and host name of the files. If
3421 one of the components is missing, the default values are used.
3422 The local file name parts of FILE1 and FILE2 are not taken into
3427 (tramp-equal-remote \"/ssh::/etc\" \"/<your host name>:/home\")
3429 would yield `t'. On the other hand, the following check results in nil:
3431 (tramp-equal-remote \"/sudo::/etc\" \"/su::/etc\")"
3432 (and (stringp (file-remote-p file1
))
3433 (stringp (file-remote-p file2
))
3434 (string-equal (file-remote-p file1
) (file-remote-p file2
))))
3436 (defun tramp-get-method-parameter (method param
)
3437 "Return the method parameter PARAM.
3438 If the `tramp-methods' entry does not exist, return nil."
3439 (let ((entry (assoc param
(assoc method tramp-methods
))))
3440 (when entry
(cadr entry
))))
3442 (defun tramp-mode-string-to-int (mode-string)
3443 "Converts a ten-letter `drwxrwxrwx'-style mode string into mode bits."
3444 (let* (case-fold-search
3445 (mode-chars (string-to-vector mode-string
))
3446 (owner-read (aref mode-chars
1))
3447 (owner-write (aref mode-chars
2))
3448 (owner-execute-or-setid (aref mode-chars
3))
3449 (group-read (aref mode-chars
4))
3450 (group-write (aref mode-chars
5))
3451 (group-execute-or-setid (aref mode-chars
6))
3452 (other-read (aref mode-chars
7))
3453 (other-write (aref mode-chars
8))
3454 (other-execute-or-sticky (aref mode-chars
9)))
3458 ((char-equal owner-read ?r
) (tramp-compat-octal-to-decimal "00400"))
3459 ((char-equal owner-read ?-
) 0)
3460 (t (error "Second char `%c' must be one of `r-'" owner-read
)))
3462 ((char-equal owner-write ?w
) (tramp-compat-octal-to-decimal "00200"))
3463 ((char-equal owner-write ?-
) 0)
3464 (t (error "Third char `%c' must be one of `w-'" owner-write
)))
3466 ((char-equal owner-execute-or-setid ?x
)
3467 (tramp-compat-octal-to-decimal "00100"))
3468 ((char-equal owner-execute-or-setid ?S
)
3469 (tramp-compat-octal-to-decimal "04000"))
3470 ((char-equal owner-execute-or-setid ?s
)
3471 (tramp-compat-octal-to-decimal "04100"))
3472 ((char-equal owner-execute-or-setid ?-
) 0)
3473 (t (error "Fourth char `%c' must be one of `xsS-'"
3474 owner-execute-or-setid
)))
3476 ((char-equal group-read ?r
) (tramp-compat-octal-to-decimal "00040"))
3477 ((char-equal group-read ?-
) 0)
3478 (t (error "Fifth char `%c' must be one of `r-'" group-read
)))
3480 ((char-equal group-write ?w
) (tramp-compat-octal-to-decimal "00020"))
3481 ((char-equal group-write ?-
) 0)
3482 (t (error "Sixth char `%c' must be one of `w-'" group-write
)))
3484 ((char-equal group-execute-or-setid ?x
)
3485 (tramp-compat-octal-to-decimal "00010"))
3486 ((char-equal group-execute-or-setid ?S
)
3487 (tramp-compat-octal-to-decimal "02000"))
3488 ((char-equal group-execute-or-setid ?s
)
3489 (tramp-compat-octal-to-decimal "02010"))
3490 ((char-equal group-execute-or-setid ?-
) 0)
3491 (t (error "Seventh char `%c' must be one of `xsS-'"
3492 group-execute-or-setid
)))
3494 ((char-equal other-read ?r
)
3495 (tramp-compat-octal-to-decimal "00004"))
3496 ((char-equal other-read ?-
) 0)
3497 (t (error "Eighth char `%c' must be one of `r-'" other-read
)))
3499 ((char-equal other-write ?w
) (tramp-compat-octal-to-decimal "00002"))
3500 ((char-equal other-write ?-
) 0)
3501 (t (error "Nineth char `%c' must be one of `w-'" other-write
)))
3503 ((char-equal other-execute-or-sticky ?x
)
3504 (tramp-compat-octal-to-decimal "00001"))
3505 ((char-equal other-execute-or-sticky ?T
)
3506 (tramp-compat-octal-to-decimal "01000"))
3507 ((char-equal other-execute-or-sticky ?t
)
3508 (tramp-compat-octal-to-decimal "01001"))
3509 ((char-equal other-execute-or-sticky ?-
) 0)
3510 (t (error "Tenth char `%c' must be one of `xtT-'"
3511 other-execute-or-sticky
)))))))
3513 (defun tramp-local-host-p (vec)
3514 "Return t if this points to the local host, nil otherwise."
3515 ;; We cannot use `tramp-file-name-real-host'. A port is an
3516 ;; indication for an ssh tunnel or alike.
3517 (let ((host (tramp-file-name-host vec
)))
3520 (string-match tramp-local-host-regexp host
)
3521 ;; The method shall be applied to one of the shell file name
3522 ;; handler. `tramp-local-host-p' is also called for "smb" and
3523 ;; alike, where it must fail.
3524 (tramp-get-method-parameter
3525 (tramp-file-name-method vec
) 'tramp-login-program
)
3526 ;; The local temp directory must be writable for the other user.
3528 (tramp-make-tramp-file-name
3529 (tramp-file-name-method vec
)
3530 (tramp-file-name-user vec
)
3532 (tramp-compat-temporary-file-directory)))
3533 ;; On some systems, chown runs only for root.
3534 (or (zerop (user-uid))
3535 ;; This is defined in tramp-sh.el. Let's assume this is
3537 (zerop (tramp-compat-funcall 'tramp-get-remote-uid vec
'integer
))))))
3539 (defun tramp-get-remote-tmpdir (vec)
3540 "Return directory for temporary files on the remote host identified by VEC."
3541 (with-connection-property vec
"tmpdir"
3542 (let ((dir (tramp-make-tramp-file-name
3543 (tramp-file-name-method vec
)
3544 (tramp-file-name-user vec
)
3545 (tramp-file-name-host vec
)
3547 (tramp-get-method-parameter
3548 (tramp-file-name-method vec
) 'tramp-tmpdir
)
3550 (if (and (file-directory-p dir
) (file-writable-p dir
))
3552 (tramp-error vec
'file-error
"Directory %s not accessible" dir
)))))
3554 (defun tramp-make-tramp-temp-file (vec)
3555 "Create a temporary file on the remote host identified by VEC.
3556 Return the local name of the temporary file."
3557 (let ((prefix (expand-file-name
3558 tramp-temp-name-prefix
(tramp-get-remote-tmpdir vec
)))
3561 ;; `make-temp-file' would be the natural choice for
3562 ;; implementation. But it calls `write-region' internally,
3563 ;; which also needs a temporary file - we would end in an
3565 (setq result
(make-temp-name prefix
))
3566 (if (file-exists-p result
)
3568 ;; This creates the file by side effect.
3569 (set-file-times result
)
3570 (set-file-modes result
(tramp-compat-octal-to-decimal "0700"))))
3572 ;; Return the local part.
3573 (with-parsed-tramp-file-name result nil localname
)))
3575 (defun tramp-delete-temp-file-function ()
3576 "Remove temporary files related to current buffer."
3577 (when (stringp tramp-temp-buffer-file-name
)
3578 (ignore-errors (delete-file tramp-temp-buffer-file-name
))))
3580 (add-hook 'kill-buffer-hook
'tramp-delete-temp-file-function
)
3581 (add-hook 'tramp-unload-hook
3583 (remove-hook 'kill-buffer-hook
3584 'tramp-delete-temp-file-function
)))
3586 ;;; Auto saving to a special directory:
3588 (unless (tramp-exists-file-name-handler 'make-auto-save-file-name
)
3589 (defadvice make-auto-save-file-name
3590 (around tramp-advice-make-auto-save-file-name
() activate
)
3591 "Invoke `tramp-*-handle-make-auto-save-file-name' for Tramp files."
3592 (if (tramp-tramp-file-p (buffer-file-name))
3593 ;; We cannot call `tramp-handle-make-auto-save-file-name'
3594 ;; directly, because this would bypass the locking mechanism.
3595 (setq ad-return-value
3596 (tramp-file-name-handler 'make-auto-save-file-name
))
3602 'make-auto-save-file-name
3603 'around
'tramp-advice-make-auto-save-file-name
)
3604 (ad-activate 'make-auto-save-file-name
))))
3606 ;; In XEmacs < 21.5, autosaved remote files have permission 0666 minus
3607 ;; umask. This is a security threat.
3609 (defun tramp-set-auto-save-file-modes ()
3610 "Set permissions of autosaved remote files to the original permissions."
3611 (let ((bfn (buffer-file-name)))
3612 (when (and (tramp-tramp-file-p bfn
)
3614 (stringp buffer-auto-save-file-name
)
3615 (not (equal bfn buffer-auto-save-file-name
)))
3616 (unless (file-exists-p buffer-auto-save-file-name
)
3617 (write-region "" nil buffer-auto-save-file-name
))
3618 ;; Permissions should be set always, because there might be an old
3619 ;; auto-saved file belonging to another original file. This could
3620 ;; be a security threat.
3622 buffer-auto-save-file-name
3623 (or (file-modes bfn
) (tramp-compat-octal-to-decimal "0600"))))))
3625 (unless (and (featurep 'xemacs
)
3626 (= emacs-major-version
21)
3627 (> emacs-minor-version
4))
3628 (add-hook 'auto-save-hook
'tramp-set-auto-save-file-modes
)
3629 (add-hook 'tramp-unload-hook
3631 (remove-hook 'auto-save-hook
'tramp-set-auto-save-file-modes
))))
3633 (defun tramp-subst-strs-in-string (alist string
)
3634 "Replace all occurrences of the string FROM with TO in STRING.
3635 ALIST is of the form ((FROM . TO) ...)."
3638 (let* ((pr (car alist
))
3641 (while (string-match (regexp-quote from
) string
)
3642 (setq string
(replace-match to t t string
)))
3643 (setq alist
(cdr alist
))))
3646 ;;; Compatibility functions section:
3648 (defun tramp-read-passwd (proc &optional prompt
)
3649 "Read a password from user (compat function).
3650 Consults the auth-source package.
3651 Invokes `password-read' if available, `read-passwd' else."
3652 (let* ((key (tramp-make-tramp-file-name
3653 tramp-current-method tramp-current-user
3654 tramp-current-host
""))
3657 (with-current-buffer (process-buffer proc
)
3658 (tramp-check-for-regexp proc tramp-password-prompt-regexp
)
3659 (format "%s for %s " (capitalize (match-string 1)) key
))))
3660 auth-info auth-passwd
)
3661 (with-parsed-tramp-file-name key nil
3664 ;; See if auth-sources contains something useful, if it's
3665 ;; bound. `auth-source-user-or-password' is an obsoleted
3666 ;; function, it has been replaced by `auth-source-search'.
3667 (and (boundp 'auth-sources
)
3668 (tramp-get-connection-property v
"first-password-request" nil
)
3669 ;; Try with Tramp's current method.
3670 (if (fboundp 'auth-source-search
)
3672 (tramp-compat-funcall
3675 :user
(or tramp-current-user t
)
3676 :host tramp-current-host
3677 :port tramp-current-method
)
3678 auth-passwd
(plist-get (nth 0 auth-info
) :secret
)
3679 auth-passwd
(if (functionp auth-passwd
)
3680 (funcall auth-passwd
)
3682 (tramp-compat-funcall
3683 'auth-source-user-or-password
3684 "password" tramp-current-host tramp-current-method
)))
3685 ;; Try the password cache.
3686 (when (functionp 'password-read
)
3687 (unless (tramp-get-connection-property
3688 v
"first-password-request" nil
)
3689 (tramp-compat-funcall 'password-cache-remove key
))
3691 (tramp-compat-funcall 'password-read pw-prompt key
)))
3692 (tramp-compat-funcall 'password-cache-add key password
)
3694 ;; Else, get the password interactively.
3695 (read-passwd pw-prompt
))
3696 (tramp-set-connection-property v
"first-password-request" nil
)))))
3698 (defun tramp-clear-passwd (vec)
3699 "Clear password cache for connection related to VEC."
3700 (tramp-compat-funcall
3701 'password-cache-remove
3702 (tramp-make-tramp-file-name
3703 (tramp-file-name-method vec
)
3704 (tramp-file-name-user vec
)
3705 (tramp-file-name-host vec
)
3708 ;; Snarfed code from time-date.el and parse-time.el
3710 (defconst tramp-half-a-year
'(241 17024)
3711 "Evaluated by \"(days-to-time 183)\".")
3713 (defconst tramp-parse-time-months
3714 '(("jan" .
1) ("feb" .
2) ("mar" .
3)
3715 ("apr" .
4) ("may" .
5) ("jun" .
6)
3716 ("jul" .
7) ("aug" .
8) ("sep" .
9)
3717 ("oct" .
10) ("nov" .
11) ("dec" .
12))
3718 "Alist mapping month names to integers.")
3720 (defun tramp-time-less-p (t1 t2
)
3721 "Say whether time value T1 is less than time value T2."
3722 (unless t1
(setq t1
'(0 0)))
3723 (unless t2
(setq t2
'(0 0)))
3724 (or (< (car t1
) (car t2
))
3725 (and (= (car t1
) (car t2
))
3726 (< (nth 1 t1
) (nth 1 t2
)))))
3728 (defun tramp-time-subtract (t1 t2
)
3729 "Subtract two time values.
3730 Return the difference in the format of a time value."
3731 (unless t1
(setq t1
'(0 0)))
3732 (unless t2
(setq t2
'(0 0)))
3733 (let ((borrow (< (cadr t1
) (cadr t2
))))
3734 (list (- (car t1
) (car t2
) (if borrow
1 0))
3735 (- (+ (if borrow
65536 0) (cadr t1
)) (cadr t2
)))))
3737 (defun tramp-time-diff (t1 t2
)
3738 "Return the difference between the two times, in seconds.
3739 T1 and T2 are time values (as returned by `current-time' for example)."
3740 (cond ((and (fboundp 'subtract-time
)
3741 (fboundp 'float-time
))
3742 (tramp-compat-funcall
3743 'float-time
(tramp-compat-funcall 'subtract-time t1 t2
)))
3744 ((and (fboundp 'subtract-time
)
3745 (fboundp 'time-to-seconds
))
3746 (tramp-compat-funcall
3747 'time-to-seconds
(tramp-compat-funcall 'subtract-time t1 t2
)))
3748 ((fboundp 'itimer-time-difference
)
3749 (tramp-compat-funcall
3750 'itimer-time-difference
3751 (if (< (length t1
) 3) (append t1
'(0)) t1
)
3752 (if (< (length t2
) 3) (append t2
'(0)) t2
)))
3754 (let ((time (tramp-time-subtract t1 t2
)))
3755 (+ (* (car time
) 65536.0)
3757 (/ (or (nth 2 time
) 0) 1000000.0))))))
3759 ;; Currently (as of Emacs 20.5), the function `shell-quote-argument'
3760 ;; does not deal well with newline characters. Newline is replaced by
3761 ;; backslash newline. But if, say, the string `a backslash newline b'
3762 ;; is passed to a shell, the shell will expand this into "ab",
3763 ;; completely omitting the newline. This is not what was intended.
3764 ;; It does not appear to be possible to make the function
3765 ;; `shell-quote-argument' work with newlines without making it
3766 ;; dependent on the shell used. But within this package, we know that
3767 ;; we will always use a Bourne-like shell, so we use an approach which
3770 ;; The approach is simple: we call `shell-quote-argument', then
3771 ;; massage the newline part of the result.
3773 ;; This function should produce a string which is grokked by a Unix
3774 ;; shell, even if the Emacs is running on Windows. Since this is the
3775 ;; kludges section, we bind `system-type' in such a way that
3776 ;; `shell-quote-arguments' behaves as if on Unix.
3778 ;; Thanks to Mario DeWeerd for the hint that it is sufficient for this
3779 ;; function to work with Bourne-like shells.
3781 ;; CCC: This function should be rewritten so that
3782 ;; `shell-quote-argument' is not used. This way, we are safe from
3783 ;; changes in `shell-quote-argument'.
3784 ;;;###tramp-autoload
3785 (defun tramp-shell-quote-argument (s)
3786 "Similar to `shell-quote-argument', but groks newlines.
3787 Only works for Bourne-like shells."
3788 (let ((system-type 'not-windows
))
3790 (let ((result (shell-quote-argument s
))
3791 (nl (regexp-quote (format "\\%s" tramp-rsh-end-of-line
))))
3792 (when (and (>= (length result
) 2)
3793 (string= (substring result
0 2) "\\~"))
3794 (setq result
(substring result
1)))
3795 (while (string-match nl result
)
3796 (setq result
(replace-match (format "'%s'" tramp-rsh-end-of-line
)
3800 ;; Checklist for `tramp-unload-hook'
3801 ;; - Unload all `tramp-*' packages
3802 ;; - Reset `file-name-handler-alist'
3803 ;; - Cleanup hooks where Tramp functions are in
3804 ;; - Cleanup advised functions
3805 ;; - Cleanup autoloads
3807 (defun tramp-unload-tramp ()
3808 "Discard Tramp from loading remote files."
3810 ;; ange-ftp settings must be enabled.
3811 (tramp-compat-funcall 'tramp-ftp-enable-ange-ftp
)
3812 ;; Maybe it's not loaded yet.
3813 (ignore-errors (unload-feature 'tramp
'force
)))
3819 ;; * Rewrite `tramp-shell-quote-argument' to abstain from using
3820 ;; `shell-quote-argument'.
3821 ;; * In Emacs 21, `insert-directory' shows total number of bytes used
3822 ;; by the files in that directory. Add this here.
3823 ;; * Avoid screen blanking when hitting `g' in dired. (Eli Tziperman)
3824 ;; * Make ffap.el grok Tramp filenames. (Eli Tziperman)
3825 ;; * abbreviate-file-name
3826 ;; * Better error checking. At least whenever we see something
3827 ;; strange when doing zerop, we should kill the process and start
3828 ;; again. (Greg Stark)
3829 ;; * Username and hostname completion.
3830 ;; ** Try to avoid usage of `last-input-event' in `tramp-completion-mode-p'.
3831 ;; ** Unify `tramp-parse-{rhosts,shosts,sconfig,hosts,passwd,netrc}'.
3832 ;; Code is nearly identical.
3833 ;; * Make `tramp-default-user' obsolete.
3834 ;; * Implement a general server-local-variable mechanism, as there are
3835 ;; probably other variables that need different values for different
3836 ;; servers too. The user could then configure a variable (such as
3837 ;; tramp-server-local-variable-alist) to define any such variables
3838 ;; that they need to, which would then be let bound as appropriate
3839 ;; in tramp functions. (Jason Rumney)
3840 ;; * IMHO, it's a drawback that currently Tramp doesn't support
3841 ;; Unicode in Dired file names by default. Is it possible to
3842 ;; improve Tramp to set LC_ALL to "C" only for commands where Tramp
3843 ;; expects English? Or just to set LC_MESSAGES to "C" if Tramp
3844 ;; expects only English messages? (Juri Linkov)
3845 ;; * Make shadowfile.el grok Tramp filenames. (Bug#4526, Bug#4846)
3846 ;; * I was wondering it it would be possible to use tramp even if I'm
3847 ;; actually using sshfs. But when I launch a command I would like
3848 ;; to get it executed on the remote machine where the files really
3849 ;; are. (Andrea Crotti)
3850 ;; * Run emerge on two remote files. Bug is described here:
3851 ;; <http://www.mail-archive.com/tramp-devel@nongnu.org/msg01041.html>.
3854 ;; Functions for file-name-handler-alist:
3855 ;; diff-latest-backup-file -- in diff.el
3857 ;;; tramp.el ends here