code.delx.au - gnu-emacs/blob - lisp/net/tramp-adb.el

   1 ;;; tramp-adb.el --- Functions for calling Android Debug Bridge from Tramp
   2
   3 ;; Copyright (C) 2011-2013 Free Software Foundation, Inc.
   4
   5 ;; Author: Juergen Hoetzel <juergen@archlinux.org>
   6 ;; Keywords: comm, processes
   7 ;; Package: tramp
   8
   9 ;; This file is part of GNU Emacs.
  10
  11 ;; GNU Emacs is free software: you can redistribute it and/or modify
  12 ;; it under the terms of the GNU General Public License as published by
  13 ;; the Free Software Foundation, either version 3 of the License, or
  14 ;; (at your option) any later version.
  15
  16 ;; GNU Emacs is distributed in the hope that it will be useful,
  17 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19 ;; GNU General Public License for more details.
  20
  21 ;; You should have received a copy of the GNU General Public License
  22 ;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
  23
  24 ;;; Commentary:
  25
  26 ;; The Android Debug Bridge "adb" must be installed on your local
  27 ;; machine.  If it is not in your $PATH, add the following form into
  28 ;; your .emacs:
  29 ;;
  30 ;;   (setq tramp-adb-program "/path/to/adb")
  31 ;;
  32 ;; Due to security it is not possible to access non-root devices.
  33
  34 ;;; Code:
  35
  36 (require 'tramp)
  37 (require 'time-date)
  38
  39 (defvar dired-move-to-filename-regexp)
  40
  41 (defcustom tramp-adb-program "adb"
  42   "Name of the Android Debug Bridge program."
  43   :group 'tramp
  44   :version "24.4"
  45   :type 'string)
  46
  47 ;;;###tramp-autoload
  48 (defconst tramp-adb-method "adb"
  49   "*When this method name is used, forward all calls to Android Debug Bridge.")
  50
  51 (defcustom tramp-adb-prompt
  52   "^\\(?:[[:digit:]]*|?\\)?\\(?:[[:alnum:]]*@[[:alnum:]]*[^#\\$]*\\)?[#\\$][[:space:]]"
  53   "Regexp used as prompt in almquist shell."
  54   :type 'string
  55   :version "24.4"
  56   :group 'tramp)
  57
  58 (defconst tramp-adb-ls-date-regexp
  59   "[[:space:]][0-9]\\{4\\}-[0-9][0-9]-[0-9][0-9][[:space:]][0-9][0-9]:[0-9][0-9][[:space:]]")
  60
  61 (defconst tramp-adb-ls-toolbox-regexp
  62   (concat
  63    "^[[:space:]]*\\([-[:alpha:]]+\\)"   ; \1 permissions
  64    "[[:space:]]*\\([^[:space:]]+\\)"    ; \2 username
  65    "[[:space:]]+\\([^[:space:]]+\\)"    ; \3 group
  66    "[[:space:]]+\\([[:digit:]]+\\)"     ; \4 size
  67    "[[:space:]]+\\([-[:digit:]]+[[:space:]][:[:digit:]]+\\)" ; \5 date
  68    "[[:space:]]+\\(.*\\)$"))            ; \6 filename
  69
  70 ;;;###tramp-autoload
  71 (add-to-list 'tramp-methods
  72              `(,tramp-adb-method
  73                (tramp-tmpdir "/data/local/tmp")))
  74
  75 ;;;###tramp-autoload
  76 (add-to-list 'tramp-default-host-alist `(,tramp-adb-method nil ""))
  77
  78 ;;;###tramp-autoload
  79 (eval-after-load 'tramp
  80   '(tramp-set-completion-function
  81     tramp-adb-method '((tramp-adb-parse-device-names ""))))
  82
  83 ;;;###tramp-autoload
  84 (add-to-list 'tramp-foreign-file-name-handler-alist
  85              (cons 'tramp-adb-file-name-p 'tramp-adb-file-name-handler))
  86
  87 (defconst tramp-adb-file-name-handler-alist
  88   '((directory-file-name . tramp-handle-directory-file-name)
  89     (dired-uncache . tramp-handle-dired-uncache)
  90     (file-name-as-directory . tramp-handle-file-name-as-directory)
  91     (file-name-completion . tramp-handle-file-name-completion)
  92     (file-name-all-completions . tramp-adb-handle-file-name-all-completions)
  93     (file-attributes . tramp-adb-handle-file-attributes)
  94     (file-name-directory . tramp-handle-file-name-directory)
  95     (file-name-nondirectory . tramp-handle-file-name-nondirectory)
  96     (file-truename . tramp-adb-handle-file-truename)
  97     (file-newer-than-file-p . tramp-handle-file-newer-than-file-p)
  98     (file-name-as-directory . tramp-handle-file-name-as-directory)
  99     (file-regular-p . tramp-handle-file-regular-p)
 100     (file-remote-p . tramp-handle-file-remote-p)
 101     (file-accessible-directory-p . tramp-handle-file-accessible-directory-p)
 102     (file-directory-p . tramp-adb-handle-file-directory-p)
 103     (file-symlink-p . tramp-handle-file-symlink-p)
 104     ;; FIXME: This is too sloppy.
 105     (file-executable-p . tramp-handle-file-exists-p)
 106     (file-exists-p . tramp-handle-file-exists-p)
 107     (file-readable-p . tramp-handle-file-exists-p)
 108     (file-writable-p . tramp-adb-handle-file-writable-p)
 109     (file-local-copy . tramp-adb-handle-file-local-copy)
 110     (file-modes . tramp-handle-file-modes)
 111     (expand-file-name . tramp-adb-handle-expand-file-name)
 112     (find-backup-file-name . tramp-handle-find-backup-file-name)
 113     (directory-files . tramp-handle-directory-files)
 114     (directory-files-and-attributes
 115      . tramp-adb-handle-directory-files-and-attributes)
 116     (make-directory . tramp-adb-handle-make-directory)
 117     (delete-directory . tramp-adb-handle-delete-directory)
 118     (delete-file . tramp-adb-handle-delete-file)
 119     (load . tramp-handle-load)
 120     (insert-directory . tramp-adb-handle-insert-directory)
 121     (insert-file-contents . tramp-handle-insert-file-contents)
 122     (substitute-in-file-name . tramp-handle-substitute-in-file-name)
 123     (unhandled-file-name-directory . tramp-handle-unhandled-file-name-directory)
 124     (vc-registered . ignore)    ;no  vc control files on Android devices
 125     (write-region . tramp-adb-handle-write-region)
 126     (set-file-modes . tramp-adb-handle-set-file-modes)
 127     (set-file-times . tramp-adb-handle-set-file-times)
 128     (copy-file . tramp-adb-handle-copy-file)
 129     (rename-file . tramp-adb-handle-rename-file)
 130     (process-file . tramp-adb-handle-process-file)
 131     (shell-command . tramp-adb-handle-shell-command)
 132     (start-file-process . tramp-adb-handle-start-file-process))
 133   "Alist of handler functions for Tramp ADB method.")
 134
 135 ;; It must be a `defsubst' in order to push the whole code into
 136 ;; tramp-loaddefs.el.  Otherwise, there would be recursive autoloading.
 137 ;;;###tramp-autoload
 138 (defsubst tramp-adb-file-name-p (filename)
 139   "Check if it's a filename for ADB."
 140   (let ((v (tramp-dissect-file-name filename)))
 141     (string= (tramp-file-name-method v) tramp-adb-method)))
 142
 143 ;;;###tramp-autoload
 144 (defun tramp-adb-file-name-handler (operation &rest args)
 145   "Invoke the ADB handler for OPERATION.
 146 First arg specifies the OPERATION, second arg is a list of arguments to
 147 pass to the OPERATION."
 148   (let ((fn (assoc operation tramp-adb-file-name-handler-alist)))
 149     (if fn
 150         (save-match-data (apply (cdr fn) args))
 151       (tramp-run-real-handler operation args))))
 152
 153 ;;;###tramp-autoload
 154 (defun tramp-adb-parse-device-names (ignore)
 155   "Return a list of (nil host) tuples allowed to access."
 156   (with-timeout (10)
 157     (with-temp-buffer
 158       (when (zerop (call-process tramp-adb-program nil t nil "devices"))
 159         (let (result)
 160           (goto-char (point-min))
 161           (while (search-forward-regexp "^\\(\\S-+\\)[[:space:]]+device$" nil t)
 162             (add-to-list 'result (list nil (match-string 1))))
 163           result)))))
 164
 165 (defun tramp-adb-handle-expand-file-name (name &optional dir)
 166   "Like `expand-file-name' for Tramp files."
 167   ;; If DIR is not given, use DEFAULT-DIRECTORY or "/".
 168   (setq dir (or dir default-directory "/"))
 169   ;; Unless NAME is absolute, concat DIR and NAME.
 170   (unless (file-name-absolute-p name)
 171     (setq name (concat (file-name-as-directory dir) name)))
 172   ;; If NAME is not a Tramp file, run the real handler.
 173   (if (not (tramp-tramp-file-p name))
 174       (tramp-run-real-handler 'expand-file-name (list name nil))
 175     ;; Dissect NAME.
 176     (with-parsed-tramp-file-name name nil
 177       (unless (tramp-run-real-handler 'file-name-absolute-p (list localname))
 178         (setq localname (concat "/" localname)))
 179       ;; Do normal `expand-file-name' (this does "/./" and "/../").
 180       ;; We bind `directory-sep-char' here for XEmacs on Windows,
 181       ;; which would otherwise use backslash.  `default-directory' is
 182       ;; bound, because on Windows there would be problems with UNC
 183       ;; shares or Cygwin mounts.
 184       (let ((directory-sep-char ?/)
 185             (default-directory (tramp-compat-temporary-file-directory)))
 186         (tramp-make-tramp-file-name
 187          method user host
 188          (tramp-drop-volume-letter
 189           (tramp-run-real-handler
 190            'expand-file-name (list localname))))))))
 191
 192 (defun tramp-adb-handle-file-directory-p (filename)
 193   "Like `file-directory-p' for Tramp files."
 194   (car (file-attributes (file-truename filename))))
 195
 196 ;; This is derived from `tramp-sh-handle-file-truename'.  Maybe the
 197 ;; code could be shared?
 198 (defun tramp-adb-handle-file-truename (filename &optional counter prev-dirs)
 199   "Like `file-truename' for Tramp files."
 200   (with-parsed-tramp-file-name (expand-file-name filename) nil
 201     (with-tramp-file-property v localname "file-truename"
 202       (let ((result nil))                       ; result steps in reverse order
 203         (tramp-message v 4 "Finding true name for `%s'" filename)
 204         (let* ((directory-sep-char ?/)
 205                (steps (tramp-compat-split-string localname "/"))
 206                (localnamedir (tramp-run-real-handler
 207                               'file-name-as-directory (list localname)))
 208                (is-dir (string= localname localnamedir))
 209                (thisstep nil)
 210                (numchase 0)
 211                ;; Don't make the following value larger than
 212                ;; necessary.  People expect an error message in a
 213                ;; timely fashion when something is wrong; otherwise
 214                ;; they might think that Emacs is hung.  Of course,
 215                ;; correctness has to come first.
 216                (numchase-limit 20)
 217                symlink-target)
 218           (while (and steps (< numchase numchase-limit))
 219             (setq thisstep (pop steps))
 220             (tramp-message
 221              v 5 "Check %s"
 222              (mapconcat 'identity
 223                         (append '("") (reverse result) (list thisstep))
 224                         "/"))
 225             (setq symlink-target
 226                   (nth 0 (file-attributes
 227                           (tramp-make-tramp-file-name
 228                            method user host
 229                            (mapconcat 'identity
 230                                       (append '("")
 231                                               (reverse result)
 232                                               (list thisstep))
 233                                       "/")))))
 234             (cond ((string= "." thisstep)
 235                    (tramp-message v 5 "Ignoring step `.'"))
 236                   ((string= ".." thisstep)
 237                    (tramp-message v 5 "Processing step `..'")
 238                    (pop result))
 239                   ((stringp symlink-target)
 240                    ;; It's a symlink, follow it.
 241                    (tramp-message v 5 "Follow symlink to %s" symlink-target)
 242                    (setq numchase (1+ numchase))
 243                    (when (file-name-absolute-p symlink-target)
 244                      (setq result nil))
 245                    ;; If the symlink was absolute, we'll get a string
 246                    ;; like "/user@host:/some/target"; extract the
 247                    ;; "/some/target" part from it.
 248                    (when (tramp-tramp-file-p symlink-target)
 249                      (unless (tramp-equal-remote filename symlink-target)
 250                        (tramp-error
 251                         v 'file-error
 252                         "Symlink target `%s' on wrong host" symlink-target))
 253                      (setq symlink-target localname))
 254                    (setq steps
 255                          (append (tramp-compat-split-string
 256                                   symlink-target "/")
 257                                  steps)))
 258                   (t
 259                    ;; It's a file.
 260                    (setq result (cons thisstep result)))))
 261           (when (>= numchase numchase-limit)
 262             (tramp-error
 263              v 'file-error
 264              "Maximum number (%d) of symlinks exceeded" numchase-limit))
 265           (setq result (reverse result))
 266           ;; Combine list to form string.
 267           (setq result
 268                 (if result
 269                     (mapconcat 'identity (cons "" result) "/")
 270                   "/"))
 271           (when (and is-dir (or (string= "" result)
 272                                 (not (string= (substring result -1) "/"))))
 273             (setq result (concat result "/"))))
 274
 275         (tramp-message v 4 "True name of `%s' is `%s'" filename result)
 276         (tramp-make-tramp-file-name method user host result)))))
 277
 278 (defun tramp-adb-handle-file-attributes (filename &optional id-format)
 279   "Like `file-attributes' for Tramp files."
 280   (unless id-format (setq id-format 'integer))
 281   (ignore-errors
 282     (with-parsed-tramp-file-name filename nil
 283       (with-tramp-file-property
 284           v localname (format "file-attributes-%s" id-format)
 285         (tramp-adb-barf-unless-okay
 286          v (format "%s -d -l %s"
 287                    (tramp-adb-get-ls-command v)
 288                    (tramp-shell-quote-argument localname)) "")
 289         (with-current-buffer (tramp-get-buffer v)
 290           (tramp-adb-sh-fix-ls-output)
 291           (cdar (tramp-do-parse-file-attributes-with-ls v id-format)))))))
 292
 293 (defun tramp-do-parse-file-attributes-with-ls (vec &optional id-format)
 294   "Parse `file-attributes' for Tramp files using the ls(1) command."
 295   (with-current-buffer (tramp-get-buffer vec)
 296     (goto-char (point-min))
 297     (let ((file-properties nil))
 298       (while (re-search-forward tramp-adb-ls-toolbox-regexp nil t)
 299         (let* ((mod-string (match-string 1))
 300                (is-dir (eq ?d (aref mod-string 0)))
 301                (is-symlink (eq ?l (aref mod-string 0)))
 302                (uid (match-string 2))
 303                (gid (match-string 3))
 304                (size (string-to-number (match-string 4)))
 305                (date (match-string 5))
 306                (name (match-string 6))
 307                (symlink-target
 308                 (and is-symlink
 309                      (cadr (split-string name "\\( -> \\|\n\\)")))))
 310           (push (list
 311                  (if is-symlink
 312                      (car (split-string name "\\( -> \\|\n\\)"))
 313                    name)
 314                  (or is-dir symlink-target)
 315                  1     ;link-count
 316                  ;; no way to handle numeric ids in Androids ash
 317                  (if (eq id-format 'integer) 0 uid)
 318                  (if (eq id-format 'integer) 0 gid)
 319                  '(0 0)                 ; atime
 320                  (date-to-time date)    ; mtime
 321                  '(0 0)                 ; ctime
 322                  size
 323                  mod-string
 324                  ;; fake
 325                  t 1
 326                  (tramp-get-device vec))
 327                 file-properties)))
 328       file-properties)))
 329
 330 (defun tramp-adb-handle-directory-files-and-attributes
 331   (directory &optional full match nosort id-format)
 332   "Like `directory-files-and-attributes' for Tramp files."
 333   (when (file-directory-p directory)
 334     (with-parsed-tramp-file-name (expand-file-name directory) nil
 335       (with-tramp-file-property
 336           v localname (format "directory-files-attributes-%s-%s-%s-%s"
 337                               full match id-format nosort)
 338         (tramp-adb-barf-unless-okay
 339          v (format "%s -a -l %s"
 340                    (tramp-adb-get-ls-command v)
 341                    (tramp-shell-quote-argument localname)) "")
 342         (with-current-buffer (tramp-get-buffer v)
 343           (tramp-adb-sh-fix-ls-output)
 344           (let ((result (tramp-do-parse-file-attributes-with-ls
 345                          v (or id-format 'integer))))
 346             (when full
 347               (setq result
 348                     (mapcar
 349                      (lambda (x)
 350                        (cons (expand-file-name (car x) directory) (cdr x)))
 351                      result)))
 352             (unless nosort
 353               (setq result
 354                     (sort result (lambda (x y) (string< (car x) (car y))))))
 355             (delq nil
 356                   (mapcar (lambda (x)
 357                             (if (or (not match) (string-match match (car x)))
 358                                 x))
 359                           result))))))))
 360
 361 (defun tramp-adb-get-ls-command (vec)
 362   (with-tramp-connection-property vec "ls"
 363     (tramp-message vec 5 "Finding a suitable `ls' command")
 364     (if (zerop (tramp-adb-command-exit-status
 365                 vec "ls --color=never -al /dev/null"))
 366         ;; On CyanogenMod based system BusyBox is used and "ls" output
 367         ;; coloring is enabled by default.  So we try to disable it
 368         ;; when possible.
 369         "ls --color=never"
 370       "ls")))
 371
 372 (defun tramp-adb-get-toolbox (vec)
 373   "Get shell toolbox implementation: `toolbox' for original distributions
 374 or `busybox' for CyanogenMod based distributions"
 375   (with-tramp-connection-property vec "toolbox"
 376     (tramp-message vec 5 "Checking shell toolbox implementation")
 377     (cond
 378      ((zerop (tramp-adb-command-exit-status vec "busybox")) 'busybox)
 379      ((zerop (tramp-adb-command-exit-status vec "toolbox")) 'toolbox)
 380      (t 'unknown))))
 381
 382 (defun tramp-adb--gnu-switches-to-ash
 383   (switches)
 384   "Almquist shell can't handle multiple arguments.
 385 Convert (\"-al\") to (\"-a\" \"-l\").  Remove arguments like \"--dired\"."
 386   (split-string
 387    (apply 'concat
 388           (mapcar (lambda (s)
 389                     (replace-regexp-in-string
 390                      "\\(.\\)"  " -\\1"
 391                      (replace-regexp-in-string "^-" "" s)))
 392                   ;; FIXME: Warning about removed switches (long and non-dash).
 393                   (delq nil
 394                         (mapcar
 395                          (lambda (s)
 396                            (and (not (string-match "\\(^--\\|^[^-]\\)" s)) s))
 397                          switches))))))
 398
 399 (defun tramp-adb-handle-insert-directory
 400   (filename switches &optional wildcard full-directory-p)
 401   "Like `insert-directory' for Tramp files."
 402   (when (stringp switches)
 403     (setq switches (tramp-adb--gnu-switches-to-ash (split-string switches))))
 404   (with-parsed-tramp-file-name (file-truename filename) nil
 405     (with-current-buffer (tramp-get-buffer v)
 406       (let ((name (tramp-shell-quote-argument (directory-file-name localname)))
 407             (switch-d (member "-d" switches))
 408             (switch-t (member "-t" switches))
 409             (switches (mapconcat 'identity (remove "-t" switches) " ")))
 410         (tramp-adb-barf-unless-okay
 411          v (format "%s %s %s" (tramp-adb-get-ls-command v) switches name)
 412          "Cannot insert directory listing: %s" filename)
 413         (unless switch-d
 414           ;; We insert also filename/. and filename/.., because "ls" doesn't.
 415           (narrow-to-region (point) (point))
 416           (ignore-errors
 417             (tramp-adb-barf-unless-okay
 418              v (format "%s -d %s %s %s"
 419                        (tramp-adb-get-ls-command v)
 420                        switches
 421                        (concat (file-name-as-directory name) ".")
 422                        (concat (file-name-as-directory name) ".."))
 423              "Cannot insert directory listing: %s" filename))
 424           (widen))
 425         (tramp-adb-sh-fix-ls-output switch-t)))
 426     (insert-buffer-substring (tramp-get-buffer v))))
 427
 428 (defun tramp-adb-sh-fix-ls-output (&optional sort-by-time)
 429   "Insert dummy 0 in empty size columns.
 430 Androids \"ls\" command doesn't insert size column for directories:
 431 Emacs dired can't find files."
 432   (save-excursion
 433     ;; Insert missing size.
 434     (goto-char (point-min))
 435     (while
 436         (search-forward-regexp
 437          "[[:space:]]\\([[:space:]][0-9]\\{4\\}-[0-9][0-9]-[0-9][0-9][[:space:]]\\)" nil t)
 438       (replace-match "0\\1" "\\1" nil)
 439       ;; Insert missing "/".
 440       (when (looking-at "[0-9][0-9]:[0-9][0-9][[:space:]]+$")
 441         (end-of-line)
 442         (insert "/")))
 443     ;; Sort entries.
 444     (let* ((lines (split-string (buffer-string) "\n" t))
 445            (sorted-lines
 446             (sort
 447              lines
 448              (if sort-by-time
 449                  'tramp-adb-ls-output-time-less-p
 450                'tramp-adb-ls-output-name-less-p))))
 451       (delete-region (point-min) (point-max))
 452       (insert "  " (mapconcat 'identity sorted-lines "\n  ")))
 453     ;; Add final newline.
 454     (goto-char (point-max))
 455     (unless (= (point) (line-beginning-position))
 456       (insert "\n"))))
 457
 458
 459 (defun tramp-adb-ls-output-time-less-p (a b)
 460   "Sort \"ls\" output by time, descending."
 461   (let (time-a time-b)
 462     (string-match tramp-adb-ls-date-regexp a)
 463     (setq time-a (apply 'encode-time (parse-time-string (match-string 0 a))))
 464     (string-match tramp-adb-ls-date-regexp b)
 465     (setq time-b (apply 'encode-time (parse-time-string (match-string 0 b))))
 466     (tramp-time-less-p time-b time-a)))
 467
 468 (defun tramp-adb-ls-output-name-less-p (a b)
 469   "Sort \"ls\" output by name, ascending."
 470   (let (posa posb)
 471     (string-match dired-move-to-filename-regexp a)
 472     (setq posa (match-end 0))
 473     (string-match dired-move-to-filename-regexp b)
 474     (setq posb (match-end 0))
 475     (string-lessp (substring a posa) (substring b posb))))
 476
 477 (defun tramp-adb-handle-make-directory (dir &optional parents)
 478   "Like `make-directory' for Tramp files."
 479   (setq dir (expand-file-name dir))
 480   (with-parsed-tramp-file-name dir nil
 481     (when parents
 482       (let ((par (expand-file-name ".." dir)))
 483         (unless (file-directory-p par)
 484           (make-directory par parents))))
 485     (tramp-adb-barf-unless-okay
 486      v (format "mkdir %s" (tramp-shell-quote-argument localname))
 487      "Couldn't make directory %s" dir)
 488     (tramp-flush-directory-property v (file-name-directory localname))))
 489
 490 (defun tramp-adb-handle-delete-directory (directory &optional recursive)
 491   "Like `delete-directory' for Tramp files."
 492   (setq directory (expand-file-name directory))
 493   (with-parsed-tramp-file-name directory nil
 494     (tramp-flush-file-property v (file-name-directory localname))
 495     (tramp-flush-directory-property v localname)
 496     (tramp-adb-barf-unless-okay
 497      v (format "%s %s"
 498                (if recursive "rm -r" "rmdir")
 499                (tramp-shell-quote-argument localname))
 500      "Couldn't delete %s" directory)))
 501
 502 (defun tramp-adb-handle-delete-file (filename &optional trash)
 503   "Like `delete-file' for Tramp files."
 504   (setq filename (expand-file-name filename))
 505   (with-parsed-tramp-file-name filename nil
 506     (tramp-flush-file-property v (file-name-directory localname))
 507     (tramp-flush-file-property v localname)
 508     (tramp-adb-barf-unless-okay
 509      v (format "rm %s" (tramp-shell-quote-argument localname))
 510      "Couldn't delete %s" filename)))
 511
 512 (defun tramp-adb-handle-file-name-all-completions (filename directory)
 513   "Like `file-name-all-completions' for Tramp files."
 514   (all-completions
 515    filename
 516    (with-parsed-tramp-file-name directory nil
 517      (with-tramp-file-property v localname "file-name-all-completions"
 518        (save-match-data
 519          (tramp-adb-send-command
 520           v (format "%s %s"
 521                     (tramp-adb-get-ls-command v)
 522                     (tramp-shell-quote-argument localname)))
 523          (mapcar
 524           (lambda (f)
 525             (if (file-directory-p f)
 526                 (file-name-as-directory f)
 527               f))
 528           (with-current-buffer (tramp-get-buffer v)
 529             (delq
 530              nil
 531              (mapcar
 532               (lambda (l) (and (not (string-match  "^[[:space:]]*$" l)) l))
 533               (split-string (buffer-string) "\n"))))))))))
 534
 535 (defun tramp-adb-handle-file-local-copy (filename)
 536   "Like `file-local-copy' for Tramp files."
 537   (with-parsed-tramp-file-name filename nil
 538     (unless (file-exists-p (file-truename filename))
 539       (tramp-error
 540        v 'file-error
 541        "Cannot make local copy of non-existing file `%s'" filename))
 542     (let ((tmpfile (tramp-compat-make-temp-file filename)))
 543       (with-tramp-progress-reporter
 544           v 3 (format "Fetching %s to tmp file %s" filename tmpfile)
 545         (when (tramp-adb-execute-adb-command v "pull" localname tmpfile)
 546           (delete-file tmpfile)
 547           (tramp-error
 548            v 'file-error "Cannot make local copy of file `%s'" filename))
 549         (set-file-modes tmpfile (file-modes filename)))
 550       tmpfile)))
 551
 552 (defun tramp-adb-handle-file-writable-p (filename)
 553   "Like `tramp-sh-handle-file-writable-p'.
 554 But handle the case, if the \"test\" command is not available."
 555   (with-parsed-tramp-file-name filename nil
 556     (with-tramp-file-property v localname "file-writable-p"
 557       (if (tramp-adb-find-test-command v)
 558           (if (file-exists-p filename)
 559               (zerop
 560                (tramp-adb-command-exit-status
 561                 v (format "test -w %s" (tramp-shell-quote-argument localname))))
 562             (and
 563              (file-directory-p (file-name-directory filename))
 564              (file-writable-p (file-name-directory filename))))
 565
 566         ;; Missing "test" command on Android < 4.
 567        (let ((rw-path "/data/data"))
 568          (tramp-message
 569           v 5
 570           "Not implemented yet (assuming \"/data/data\" is writable): %s"
 571           localname)
 572          (and (>= (length localname) (length rw-path))
 573               (string= (substring localname 0 (length rw-path))
 574                        rw-path)))))))
 575
 576 (defun tramp-adb-handle-write-region
 577   (start end filename &optional append visit lockname confirm)
 578   "Like `write-region' for Tramp files."
 579   (setq filename (expand-file-name filename))
 580   (with-parsed-tramp-file-name filename nil
 581     (when append
 582       (tramp-error
 583        v 'file-error "Cannot append to file using Tramp (`%s')" filename))
 584     (when (and confirm (file-exists-p filename))
 585       (unless (y-or-n-p (format "File %s exists; overwrite anyway? "
 586                                 filename))
 587         (tramp-error v 'file-error "File not overwritten")))
 588     ;; We must also flush the cache of the directory, because
 589     ;; `file-attributes' reads the values from there.
 590     (tramp-flush-file-property v (file-name-directory localname))
 591     (tramp-flush-file-property v localname)
 592     (let* ((curbuf (current-buffer))
 593            (tmpfile (tramp-compat-make-temp-file filename)))
 594       (tramp-run-real-handler
 595        'write-region
 596        (list start end tmpfile append 'no-message lockname confirm))
 597       (with-tramp-progress-reporter
 598           v 3 (format "Moving tmp file %s to %s" tmpfile filename)
 599         (unwind-protect
 600             (when (tramp-adb-execute-adb-command v "push" tmpfile localname)
 601               (tramp-error v 'file-error "Cannot write: `%s' filename"))
 602           (delete-file tmpfile)))
 603
 604       (unless (equal curbuf (current-buffer))
 605         (tramp-error
 606          v 'file-error
 607          "Buffer has changed from `%s' to `%s'" curbuf (current-buffer))))))
 608
 609 (defun tramp-adb-handle-set-file-modes (filename mode)
 610   "Like `set-file-modes' for Tramp files."
 611   (with-parsed-tramp-file-name filename nil
 612     (tramp-flush-file-property v localname)
 613     (tramp-adb-barf-unless-okay
 614      v (format "chmod %s %s" (tramp-compat-decimal-to-octal mode) localname)
 615      "Error while changing file's mode %s" filename)))
 616
 617 (defun tramp-adb-handle-set-file-times (filename &optional time)
 618   "Like `set-file-times' for Tramp files."
 619   (with-parsed-tramp-file-name filename nil
 620     (tramp-flush-file-property v localname)
 621     (let ((time (if (or (null time) (equal time '(0 0)))
 622                     (current-time)
 623                   time)))
 624       (tramp-adb-command-exit-status
 625        ;; use shell arithmetic because of Emacs integer size limit
 626        v (format "touch -t $(( %d * 65536 + %d )) %s"
 627                  (car time) (cadr time)
 628                  (tramp-shell-quote-argument localname))))))
 629
 630 (defun tramp-adb-handle-copy-file
 631   (filename newname &optional ok-if-already-exists keep-date
 632             preserve-uid-gid preserve-extended-attributes)
 633   "Like `copy-file' for Tramp files.
 634 PRESERVE-UID-GID and PRESERVE-EXTENDED-ATTRIBUTES are completely ignored."
 635   (setq filename (expand-file-name filename)
 636         newname (expand-file-name newname))
 637
 638   (if (file-directory-p filename)
 639       (tramp-file-name-handler 'copy-directory filename newname keep-date t)
 640     (with-tramp-progress-reporter
 641         (tramp-dissect-file-name (if (file-remote-p filename) filename newname))
 642         0 (format "Copying %s to %s" filename newname)
 643
 644       (let ((tmpfile (file-local-copy filename)))
 645
 646         (if tmpfile
 647             ;; Remote filename.
 648             (condition-case err
 649                 (rename-file tmpfile newname ok-if-already-exists)
 650               ((error quit)
 651                (delete-file tmpfile)
 652                (signal (car err) (cdr err))))
 653
 654           ;; Remote newname.
 655           (when (file-directory-p newname)
 656             (setq newname
 657                   (expand-file-name (file-name-nondirectory filename) newname)))
 658
 659           (with-parsed-tramp-file-name newname nil
 660             (when (and (not ok-if-already-exists)
 661                        (file-exists-p newname))
 662               (tramp-error v 'file-already-exists newname))
 663
 664             ;; We must also flush the cache of the directory, because
 665             ;; `file-attributes' reads the values from there.
 666             (tramp-flush-file-property v (file-name-directory localname))
 667             (tramp-flush-file-property v localname)
 668             (when (tramp-adb-execute-adb-command v "push" filename localname)
 669               (tramp-error
 670                v 'file-error "Cannot copy `%s' `%s'" filename newname))))))
 671
 672     ;; KEEP-DATE handling.
 673     (when keep-date
 674       (set-file-times newname (nth 5 (file-attributes filename))))))
 675
 676 (defun tramp-adb-handle-rename-file
 677   (filename newname &optional ok-if-already-exists)
 678   "Like `rename-file' for Tramp files."
 679   (setq filename (expand-file-name filename)
 680         newname (expand-file-name newname))
 681
 682   (with-parsed-tramp-file-name
 683       (if (file-remote-p filename) filename newname) nil
 684     (with-tramp-progress-reporter
 685         v 0 (format "Renaming %s to %s" newname filename)
 686
 687       (if (and (tramp-equal-remote filename newname)
 688                (not (file-directory-p filename)))
 689           (progn
 690             (when (and (not ok-if-already-exists)
 691                        (file-exists-p newname))
 692               (tramp-error v 'file-already-exists newname))
 693             ;; We must also flush the cache of the directory, because
 694             ;; `file-attributes' reads the values from there.
 695             (tramp-flush-file-property v (file-name-directory localname))
 696             (tramp-flush-file-property v localname)
 697             ;; Short track.
 698             (tramp-adb-barf-unless-okay
 699              v (format
 700                 "mv %s %s"
 701                 (tramp-file-name-handler 'file-remote-p filename 'localname)
 702                 localname)
 703              "Error renaming %s to %s" filename newname))
 704
 705         ;; Rename by copy.
 706         (copy-file filename newname ok-if-already-exists t t)
 707         (delete-file filename)))))
 708
 709 (defun tramp-adb-handle-process-file
 710   (program &optional infile destination display &rest args)
 711   "Like `process-file' for Tramp files."
 712   ;; The implementation is not complete yet.
 713   (when (and (numberp destination) (zerop destination))
 714     (error "Implementation does not handle immediate return"))
 715
 716   (with-parsed-tramp-file-name default-directory nil
 717     (let (command input tmpinput stderr tmpstderr outbuf ret)
 718       ;; Compute command.
 719       (setq command (mapconcat 'tramp-shell-quote-argument
 720                                (cons program args) " "))
 721       ;; Determine input.
 722       (if (null infile)
 723           (setq input "/dev/null")
 724         (setq infile (expand-file-name infile))
 725         (if (tramp-equal-remote default-directory infile)
 726             ;; INFILE is on the same remote host.
 727             (setq input (with-parsed-tramp-file-name infile nil localname))
 728           ;; INFILE must be copied to remote host.
 729           (setq input (tramp-make-tramp-temp-file v)
 730                 tmpinput (tramp-make-tramp-file-name method user host input))
 731           (copy-file infile tmpinput t)))
 732       (when input (setq command (format "%s <%s" command input)))
 733
 734       ;; Determine output.
 735       (cond
 736        ;; Just a buffer.
 737        ((bufferp destination)
 738         (setq outbuf destination))
 739        ;; A buffer name.
 740        ((stringp destination)
 741         (setq outbuf (get-buffer-create destination)))
 742        ;; (REAL-DESTINATION ERROR-DESTINATION)
 743        ((consp destination)
 744         ;; output.
 745         (cond
 746          ((bufferp (car destination))
 747           (setq outbuf (car destination)))
 748          ((stringp (car destination))
 749           (setq outbuf (get-buffer-create (car destination))))
 750          ((car destination)
 751           (setq outbuf (current-buffer))))
 752         ;; stderr.
 753         (cond
 754          ((stringp (cadr destination))
 755           (setcar (cdr destination) (expand-file-name (cadr destination)))
 756           (if (tramp-equal-remote default-directory (cadr destination))
 757               ;; stderr is on the same remote host.
 758               (setq stderr (with-parsed-tramp-file-name
 759                                (cadr destination) nil localname))
 760             ;; stderr must be copied to remote host.  The temporary
 761             ;; file must be deleted after execution.
 762             (setq stderr (tramp-make-tramp-temp-file v)
 763                   tmpstderr (tramp-make-tramp-file-name
 764                              method user host stderr))))
 765          ;; stderr to be discarded.
 766          ((null (cadr destination))
 767           (setq stderr "/dev/null"))))
 768        ;; 't
 769        (destination
 770         (setq outbuf (current-buffer))))
 771       (when stderr (setq command (format "%s 2>%s" command stderr)))
 772
 773       ;; Send the command.  It might not return in time, so we protect
 774       ;; it.  Call it in a subshell, in order to preserve working
 775       ;; directory.
 776       (condition-case nil
 777           (progn
 778             (setq ret 0)
 779             (tramp-adb-barf-unless-okay
 780              v (format "(cd %s; %s)"
 781                        (tramp-shell-quote-argument localname) command)
 782              "")
 783             ;; We should show the output anyway.
 784             (when outbuf
 785               (with-current-buffer outbuf
 786                 (insert-buffer-substring (tramp-get-connection-buffer v)))
 787               (when display (display-buffer outbuf))))
 788         ;; When the user did interrupt, we should do it also.  We use
 789         ;; return code -1 as marker.
 790         (quit
 791          (kill-buffer (tramp-get-connection-buffer v))
 792          (setq ret -1))
 793         ;; Handle errors.
 794         (error
 795          (kill-buffer (tramp-get-connection-buffer v))
 796          (setq ret 1)))
 797
 798       ;; Provide error file.
 799       (when tmpstderr (rename-file tmpstderr (cadr destination) t))
 800
 801       ;; Cleanup.  We remove all file cache values for the connection,
 802       ;; because the remote process could have changed them.
 803       (when tmpinput (delete-file tmpinput))
 804
 805       ;; `process-file-side-effects' has been introduced with GNU
 806       ;; Emacs 23.2.  If set to `nil', no remote file will be changed
 807       ;; by `program'.  If it doesn't exist, we assume its default
 808       ;; value 't'.
 809       (unless (and (boundp 'process-file-side-effects)
 810                    (not (symbol-value 'process-file-side-effects)))
 811         (tramp-flush-directory-property v ""))
 812
 813       ;; Return exit status.
 814       (if (equal ret -1)
 815           (keyboard-quit)
 816         ret))))
 817
 818 (defun tramp-adb-handle-shell-command
 819   (command &optional output-buffer error-buffer)
 820   "Like `shell-command' for Tramp files."
 821   (let* ((asynchronous (string-match "[ \t]*&[ \t]*\\'" command))
 822          ;; We cannot use `shell-file-name' and `shell-command-switch',
 823          ;; they are variables of the local host.
 824          (args (list "sh" "-c" (substring command 0 asynchronous)))
 825          current-buffer-p
 826          (output-buffer
 827           (cond
 828            ((bufferp output-buffer) output-buffer)
 829            ((stringp output-buffer) (get-buffer-create output-buffer))
 830            (output-buffer
 831             (setq current-buffer-p t)
 832             (current-buffer))
 833            (t (get-buffer-create
 834                (if asynchronous
 835                    "*Async Shell Command*"
 836                  "*Shell Command Output*")))))
 837          (error-buffer
 838           (cond
 839            ((bufferp error-buffer) error-buffer)
 840            ((stringp error-buffer) (get-buffer-create error-buffer))))
 841          (buffer
 842           (if (and (not asynchronous) error-buffer)
 843               (with-parsed-tramp-file-name default-directory nil
 844                 (list output-buffer (tramp-make-tramp-temp-file v)))
 845             output-buffer))
 846          (p (get-buffer-process output-buffer)))
 847
 848     ;; Check whether there is another process running.  Tramp does not
 849     ;; support 2 (asynchronous) processes in parallel.
 850     (when p
 851       (if (yes-or-no-p "A command is running.  Kill it? ")
 852           (ignore-errors (kill-process p))
 853         (error "Shell command in progress")))
 854
 855     (if current-buffer-p
 856         (progn
 857           (barf-if-buffer-read-only)
 858           (push-mark nil t))
 859       (with-current-buffer output-buffer
 860         (setq buffer-read-only nil)
 861         (erase-buffer)))
 862
 863     (if (and (not current-buffer-p) (integerp asynchronous))
 864         (prog1
 865             ;; Run the process.
 866             (apply 'start-file-process "*Async Shell*" buffer args)
 867           ;; Display output.
 868           (pop-to-buffer output-buffer)
 869           (setq mode-line-process '(":%s"))
 870           (shell-mode))
 871
 872       (prog1
 873           ;; Run the process.
 874           (apply 'process-file (car args) nil buffer nil (cdr args))
 875         ;; Insert error messages if they were separated.
 876         (when (listp buffer)
 877           (with-current-buffer error-buffer
 878             (insert-file-contents (cadr buffer)))
 879           (delete-file (cadr buffer)))
 880         (if current-buffer-p
 881             ;; This is like exchange-point-and-mark, but doesn't
 882             ;; activate the mark.  It is cleaner to avoid activation,
 883             ;; even though the command loop would deactivate the mark
 884             ;; because we inserted text.
 885             (goto-char (prog1 (mark t)
 886                          (set-marker (mark-marker) (point)
 887                                      (current-buffer))))
 888           ;; There's some output, display it.
 889           (when (with-current-buffer output-buffer (> (point-max) (point-min)))
 890             (if (functionp 'display-message-or-buffer)
 891                 (tramp-compat-funcall 'display-message-or-buffer output-buffer)
 892               (pop-to-buffer output-buffer))))))))
 893
 894 ;; We use BUFFER also as connection buffer during setup.  Because of
 895 ;; this, its original contents must be saved, and restored once
 896 ;; connection has been setup.
 897 (defun tramp-adb-handle-start-file-process (name buffer program &rest args)
 898   "Like `start-file-process' for Tramp files."
 899   (with-parsed-tramp-file-name default-directory nil
 900     ;; When PROGRAM is nil, we should provide a tty.  This is not
 901     ;; possible here.
 902     (unless (stringp program)
 903       (tramp-error v 'file-error "PROGRAM must be a string"))
 904
 905     (let ((command
 906            (format "cd %s; %s"
 907                    (tramp-shell-quote-argument localname)
 908                    (mapconcat 'tramp-shell-quote-argument
 909                               (cons program args) " ")))
 910           (tramp-process-connection-type
 911            (or (null program) tramp-process-connection-type))
 912           (bmp (and (buffer-live-p buffer) (buffer-modified-p buffer)))
 913           (name1 name)
 914           (i 0))
 915
 916       (unless buffer
 917         ;; BUFFER can be nil.  We use a temporary buffer.
 918         (setq buffer (generate-new-buffer tramp-temp-buffer-name)))
 919       (while (get-process name1)
 920         ;; NAME must be unique as process name.
 921         (setq i (1+ i)
 922               name1 (format "%s<%d>" name i)))
 923       (setq name name1)
 924       ;; Set the new process properties.
 925       (tramp-set-connection-property v "process-name" name)
 926       (tramp-set-connection-property v "process-buffer" buffer)
 927
 928       (with-current-buffer (tramp-get-connection-buffer v)
 929         (unwind-protect
 930             ;; We catch this event.  Otherwise, `start-process' could
 931             ;; be called on the local host.
 932             (save-excursion
 933               (save-restriction
 934                 ;; Activate narrowing in order to save BUFFER
 935                 ;; contents.  Clear also the modification time;
 936                 ;; otherwise we might be interrupted by
 937                 ;; `verify-visited-file-modtime'.
 938                 (let ((buffer-undo-list t)
 939                       (buffer-read-only nil)
 940                       (mark (point)))
 941                   (clear-visited-file-modtime)
 942                   (narrow-to-region (point-max) (point-max))
 943                   ;; We call `tramp-adb-maybe-open-connection', in
 944                   ;; order to cleanup the prompt afterwards.
 945                   (tramp-adb-maybe-open-connection v)
 946                   (widen)
 947                   (delete-region mark (point))
 948                   (narrow-to-region (point-max) (point-max))
 949                   ;; Send the command.
 950                   (let ((tramp-adb-prompt (regexp-quote command)))
 951                     (tramp-adb-send-command v command))
 952                   (let ((p (tramp-get-connection-process v)))
 953                     ;; Set query flag and process marker for this
 954                     ;; process.  We ignore errors, because the process
 955                     ;; could have finished already.
 956                     (ignore-errors
 957                       (tramp-compat-set-process-query-on-exit-flag p t)
 958                       (set-marker (process-mark p) (point)))
 959                     ;; Return process.
 960                     p))))
 961
 962           ;; Save exit.
 963           (if (string-match tramp-temp-buffer-name (buffer-name))
 964               (ignore-errors
 965                 (set-process-buffer (tramp-get-connection-process v) nil)
 966                 (kill-buffer (current-buffer)))
 967             (set-buffer-modified-p bmp))
 968           (tramp-set-connection-property v "process-name" nil)
 969           (tramp-set-connection-property v "process-buffer" nil))))))
 970
 971 ;; Helper functions.
 972
 973 (defun tramp-adb-execute-adb-command (vec &rest args)
 974   "Returns nil on success error-output on failure."
 975   (when (> (length (tramp-file-name-host vec)) 0)
 976     (setq args (append (list "-s" (tramp-file-name-host vec)) args)))
 977   (with-temp-buffer
 978     (prog1
 979         (unless (zerop (apply 'call-process tramp-adb-program nil t nil args))
 980           (buffer-string))
 981       (tramp-message
 982        vec 6 "%s %s\n%s"
 983        tramp-adb-program (mapconcat 'identity args " ") (buffer-string)))))
 984
 985 (defun tramp-adb-find-test-command (vec)
 986   "Checks, whether the ash has a builtin \"test\" command.
 987 This happens for Android >= 4.0."
 988   (with-tramp-connection-property vec "test"
 989     (zerop (tramp-adb-command-exit-status vec "type test"))))
 990
 991 ;; Connection functions
 992
 993 (defun tramp-adb-send-command (vec command)
 994   "Send the COMMAND to connection VEC."
 995   (tramp-adb-maybe-open-connection vec)
 996   (tramp-message vec 6 "%s" command)
 997   (tramp-send-string vec command)
 998   ;; fixme: Race condition
 999   (tramp-adb-wait-for-output (tramp-get-connection-process vec))
1000   (with-current-buffer (tramp-get-connection-buffer vec)
1001     (save-excursion
1002       (goto-char (point-min))
1003       ;; We can't use stty to disable echo of command.
1004       (delete-matching-lines (regexp-quote command))
1005       ;; When the local machine is W32, there are still trailing ^M.
1006       ;; There must be a better solution by setting the correct coding
1007       ;; system, but this requires changes in core Tramp.
1008       (goto-char (point-min))
1009       (while (re-search-forward "\r+$" nil t)
1010         (replace-match "" nil nil)))))
1011
1012 (defun tramp-adb-command-exit-status
1013   (vec command)
1014   "Run COMMAND and return its exit status.
1015 Sends `echo $?' along with the COMMAND for checking the exit status.  If
1016 COMMAND is nil, just sends `echo $?'.  Returns the exit status found."
1017   (tramp-adb-send-command
1018    vec (if command
1019            (format "%s; echo tramp_exit_status $?" command)
1020          "echo tramp_exit_status $?"))
1021   (with-current-buffer (tramp-get-connection-buffer vec)
1022     (goto-char (point-max))
1023     (unless (re-search-backward "tramp_exit_status [0-9]+" nil t)
1024       (tramp-error
1025        vec 'file-error "Couldn't find exit status of `%s'" command))
1026     (skip-chars-forward "^ ")
1027     (prog1
1028         (read (current-buffer))
1029       (let (buffer-read-only)
1030         (delete-region (match-beginning 0) (point-max))))))
1031
1032 (defun tramp-adb-barf-unless-okay (vec command fmt &rest args)
1033   "Run COMMAND, check exit status, throw error if exit status not okay.
1034 FMT and ARGS are passed to `error'."
1035   (unless (zerop (tramp-adb-command-exit-status vec command))
1036     (apply 'tramp-error vec 'file-error fmt args)))
1037
1038 (defun tramp-adb-wait-for-output (proc &optional timeout)
1039   "Wait for output from remote command."
1040   (unless (buffer-live-p (process-buffer proc))
1041     (delete-process proc)
1042     (tramp-error proc 'file-error "Process `%s' not available, try again" proc))
1043   (with-current-buffer (process-buffer proc)
1044     (if (tramp-wait-for-regexp proc timeout tramp-adb-prompt)
1045         (let (buffer-read-only)
1046           (goto-char (point-min))
1047           ;; ADB terminal sends "^H" sequences.
1048           (when (re-search-forward "<\b+" (point-at-eol) t)
1049             (forward-line 1)
1050             (delete-region (point-min) (point)))
1051           ;; Delete the prompt.
1052          (goto-char (point-min))
1053          (when (re-search-forward tramp-adb-prompt (point-at-eol) t)
1054            (forward-line 1)
1055            (delete-region (point-min) (point)))
1056           (goto-char (point-max))
1057           (re-search-backward tramp-adb-prompt nil t)
1058           (delete-region (point) (point-max)))
1059       (if timeout
1060           (tramp-error
1061            proc 'file-error
1062            "[[Remote adb prompt `%s' not found in %d secs]]"
1063            tramp-adb-prompt timeout)
1064         (tramp-error
1065          proc 'file-error
1066          "[[Remote prompt `%s' not found]]" tramp-adb-prompt)))))
1067
1068 (defun tramp-adb-maybe-open-connection (vec)
1069   "Maybe open a connection VEC.
1070 Does not do anything if a connection is already open, but re-opens the
1071 connection if a previous connection has died for some reason."
1072   (let* ((buf (tramp-get-connection-buffer vec))
1073          (p (get-buffer-process buf))
1074          (host (tramp-file-name-host vec))
1075          (user (tramp-file-name-user vec))
1076          (devices (mapcar 'cadr (tramp-adb-parse-device-names nil))))
1077
1078     ;; Maybe we know already that "su" is not supported.  We cannot
1079     ;; use a connection property, because we have not checked yet
1080     ;; whether it is still the same device.
1081     (when (and user (not (tramp-get-file-property vec "" "su-command-p" t)))
1082       (tramp-error vec 'file-error "Cannot switch to user `%s'" user))
1083
1084     (unless
1085         (and p (processp p) (memq (process-status p) '(run open)))
1086       (save-match-data
1087         (when (and p (processp p)) (delete-process p))
1088         (if (not devices)
1089             (tramp-error vec 'file-error "No device connected"))
1090         (if (and (> (length host) 0) (not (member host devices)))
1091             (tramp-error vec 'file-error "Device %s not connected" host))
1092         (if (and (> (length devices) 1) (zerop (length host)))
1093             (tramp-error
1094              vec 'file-error
1095              "Multiple Devices connected: No Host/Device specified"))
1096         (with-tramp-progress-reporter vec 3 "Opening adb shell connection"
1097           (let* ((coding-system-for-read 'utf-8-dos) ;is this correct?
1098                  (process-connection-type tramp-process-connection-type)
1099                  (args (if (> (length host) 0)
1100                            (list "-s" host "shell")
1101                          (list "shell")))
1102                  (p (let ((default-directory
1103                             (tramp-compat-temporary-file-directory)))
1104                       (apply 'start-process (tramp-get-connection-name vec) buf
1105                              tramp-adb-program args))))
1106             (tramp-message
1107              vec 6 "%s" (mapconcat 'identity (process-command p) " "))
1108             ;; Wait for initial prompt.
1109             (tramp-adb-wait-for-output p 30)
1110             (unless (eq 'run (process-status p))
1111               (tramp-error  vec 'file-error "Terminated!"))
1112             (tramp-compat-set-process-query-on-exit-flag p nil)
1113
1114             ;; Check whether the properties have been changed.  If
1115             ;; yes, this is a strong indication that we must expire all
1116             ;; connection properties.  We start again.
1117             (tramp-message vec 5 "Checking system information")
1118             (tramp-adb-send-command
1119              vec "echo \\\"`getprop ro.product.model` `getprop ro.product.version` `getprop ro.build.version.release`\\\"")
1120             (let ((old-getprop
1121                    (tramp-get-connection-property vec "getprop" nil))
1122                   (new-getprop
1123                    (tramp-set-connection-property
1124                     vec "getprop"
1125                     (with-current-buffer (tramp-get-connection-buffer vec)
1126                       ;; Read the expression.
1127                       (goto-char (point-min))
1128                       (read (current-buffer))))))
1129               (when (and (stringp old-getprop)
1130                          (not (string-equal old-getprop new-getprop)))
1131                 (tramp-cleanup vec)
1132                 (tramp-message
1133                  vec 3
1134                  "Connection reset, because remote host changed from `%s' to `%s'"
1135                  old-getprop new-getprop)
1136                 (tramp-adb-maybe-open-connection vec)))
1137
1138             ;; Change user if indicated.
1139             (when user
1140               (tramp-adb-send-command vec (format "su %s" user))
1141               (unless (zerop (tramp-adb-command-exit-status vec nil))
1142                 (delete-process p)
1143                 (tramp-set-file-property vec "" "su-command-p" nil)
1144                 (tramp-error
1145                  vec 'file-error "Cannot switch to user `%s'" user)))
1146
1147             ;; Set "remote-path" connection property.  This is needed
1148             ;; for eshell.
1149             (tramp-adb-send-command vec "echo \\\"$PATH\\\"")
1150             (tramp-set-connection-property
1151              vec "remote-path"
1152              (split-string
1153               (with-current-buffer (tramp-get-connection-buffer vec)
1154                 ;; Read the expression.
1155                 (goto-char (point-min))
1156                 (read (current-buffer)))
1157               ":" 'omit-nulls))))))))
1158
1159 (provide 'tramp-adb)
1160 ;;; tramp-adb.el ends here