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- ;; File input and output over Internet using FTP
- ;; Copyright (C) 1987 Free Software Foundation, Inc.
- ;; Author mly@prep.ai.mit.edu.
-
- ;; This file is part of GNU Emacs.
-
- ;; GNU Emacs is free software; you can redistribute it and/or modify
- ;; it under the terms of the GNU General Public License as published by
- ;; the Free Software Foundation; either version 1, or (at your option)
- ;; any later version.
-
- ;; GNU Emacs is distributed in the hope that it will be useful,
- ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
- ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- ;; GNU General Public License for more details.
-
- ;; You should have received a copy of the GNU General Public License
- ;; along with GNU Emacs; see the file COPYING. If not, write to
- ;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
-
-
- ;; you can turn this off by doing
- ;; (setq ftp-password-alist 'compulsory-urinalysis)
- (defvar ftp-password-alist () "Security sucks")
-
- (defun read-ftp-user-password (host user new)
- (let (tem)
- (if (and (not new)
- (listp ftp-password-alist)
- (setq tem (cdr (assoc host ftp-password-alist)))
- (or (null user)
- (string= user (car tem))))
- tem
- (or user
- (progn
- (setq tem (or (and (listp ftp-password-alist)
- (car (cdr (assoc host ftp-password-alist))))
- (user-login-name)))
- (setq user (read-string (format
- "User-name for %s (default \"%s\"): "
- host tem)))
- (if (equal user "") (setq user tem))))
- (setq tem (cons user
- ;; If you want to use some non-echoing string-reader,
- ;; feel free to write it yourself. I don't care enough.
- (read-string (format "Password for %s@%s: " user host)
- (if (not (listp ftp-password-alist))
- ""
- (or (cdr (cdr (assoc host ftp-password-alist)))
- (let ((l ftp-password-alist))
- (catch 'foo
- (while l
- (if (string= (car (cdr (car l))) user)
- (throw 'foo (cdr (cdr (car l))))
- (setq l (cdr l))))
- nil))
- "")))))
- (message "")
- (if (and (listp ftp-password-alist)
- (not (string= (cdr tem) "")))
- (setq ftp-password-alist (cons (cons host tem)
- ftp-password-alist)))
- tem)))
-
- (defun ftp-read-file-name (prompt)
- (let ((s ""))
- (while (not (string-match "\\`[ \t]*\\([^ \t:]+\\)[ \t]*:\\(.+\\)\\'" s))
- (setq s (read-string prompt s)))
- (list (substring s (match-beginning 1) (match-end 1))
- (substring s (match-beginning 2) (match-end 2)))))
-
-
- (defun ftp-find-file (host file &optional user password)
- "FTP to HOST to get FILE, logging in as USER with password PASSWORD.
- Interactively, HOST and FILE are specified by reading a string with
- a colon character separating the host from the filename.
- USER and PASSWORD are defaulted from the values used when
- last ftping from HOST (unless password-remembering is disabled).
- Supply a password of the symbol `t' to override this default
- (interactively, this is done by giving a prefix arg)"
- (interactive
- (append (ftp-read-file-name "FTP get host:file: ")
- (list nil (not (null current-prefix-arg)))))
- (ftp-find-file-or-directory host file t user password))
-
- (defun ftp-list-directory (host file &optional user password)
- "FTP to HOST to list DIRECTORY, logging in as USER with password PASSWORD.
- Interactively, HOST and FILE are specified by reading a string with
- a colon character separating the host from the filename.
- USER and PASSWORD are defaulted from the values used when
- last ftping from HOST (unless password-remembering is disabled).
- Supply a password of the symbol `t' to override this default
- (interactively, this is done by giving a prefix arg)"
- (interactive
- (append (ftp-read-file-name "FTP get host:directory: ")
- (list nil (not (null current-prefix-arg)))))
- (ftp-find-file-or-directory host file nil user password))
-
- (defun ftp-find-file-or-directory (host file filep &optional user password)
- "FTP to HOST to get FILE. Third arg is t for file, nil for directory.
- Log in as USER with PASSWORD. If USER is nil or PASSWORD is nil or t,
- we prompt for the user name and password."
- (or (and user password (not (eq password t)))
- (progn (setq user (read-ftp-user-password host user (eq password t))
- password (cdr user)
- user (car user))))
- (let ((buffer (get-buffer-create (format "*ftp%s %s:%s*"
- (if filep "" "-directory")
- host file))))
- (set-buffer buffer)
- (let ((process (ftp-setup-buffer host file))
- (case-fold-search nil))
- (let ((win nil))
- (unwind-protect
- (if (setq win (ftp-login process host user password))
- (message "Logged in")
- (error "Ftp login lost"))
- (or win (delete-process process))))
- (message "Opening %s %s:%s..." (if filep "file" "directory")
- host file)
- (if (ftp-command process
- (format "%s \"%s\" -\nquit\n" (if filep "get" "dir")
- file)
- "\\(150\\|125\\).*\n"
- "200.*\n")
- (progn (forward-line 1)
- (let ((buffer-read-only nil))
- (delete-region (point-min) (point)))
- (message "Retrieving %s:%s in background. Bye!" host file)
- (set-process-sentinel process
- 'ftp-asynchronous-input-sentinel)
- process)
- (switch-to-buffer buffer)
- (let ((buffer-read-only nil))
- (insert-before-markers "<<<Ftp lost>>>"))
- (delete-process process)
- (error "Ftp %s:%s lost" host file)))))
-
-
- (defun ftp-write-file (host file &optional user password)
- "FTP to HOST to write FILE, logging in as USER with password PASSWORD.
- Interactively, HOST and FILE are specified by reading a string with colon
- separating the host from the filename.
- USER and PASSWORD are defaulted from the values used when
- last ftping from HOST (unless password-remembering is disabled).
- Supply a password of the symbol `t' to override this default
- (interactively, this is done by giving a prefix arg)"
- (interactive
- (append (ftp-read-file-name "FTP write host:file: ")
- (list nil (not (null current-prefix-arg)))))
- (or (and user password (not (eq password t)))
- (progn (setq user (read-ftp-user-password host user (eq password t))
- password (cdr user)
- user (car user))))
- (let ((buffer (get-buffer-create (format "*ftp %s:%s*" host file)))
- (tmp (make-temp-name "/tmp/emacsftp")))
- (write-region (point-min) (point-max) tmp)
- (set-buffer buffer)
- (make-local-variable 'ftp-temp-file-name)
- (setq ftp-temp-file-name tmp)
- (let ((process (ftp-setup-buffer host file))
- (case-fold-search nil))
- (let ((win nil))
- (unwind-protect
- (if (setq win (ftp-login process host user password))
- (message "Logged in")
- (error "Ftp login lost"))
- (or win (delete-process process))))
- (message "Opening file %s:%s..." host file)
- (if (ftp-command process
- (format "send \"%s\" \"%s\"\nquit\n" tmp file)
- "\\(150\\|125\\).*\n"
- "200.*\n")
- (progn (forward-line 1)
- (let ((buffer-read-only nil))
- (delete-region (point-min) (point)))
- (message "Saving %s:%s in background. Bye!" host file)
- (set-process-sentinel process
- 'ftp-asynchronous-output-sentinel)
- process)
- (switch-to-buffer buffer)
- (let ((buffer-read-only nil))
- (insert-before-markers "<<<Ftp lost>>>"))
- (delete-process process)
- (error "Ftp write %s:%s lost" host file)))))
-
-
- (defun ftp-setup-buffer (host file)
- (fundamental-mode)
- (and (get-buffer-process (current-buffer))
- (progn (discard-input)
- (if (y-or-n-p (format "Kill process \"%s\" in %s? "
- (process-name (get-buffer-process
- (current-buffer)))
- (buffer-name (current-buffer))))
- (while (get-buffer-process (current-buffer))
- (kill-process (get-buffer-process (current-buffer))))
- (error "Foo"))))
- ;(buffer-flush-undo (current-buffer))
- (setq buffer-read-only nil)
- (erase-buffer)
- (make-local-variable 'ftp-host)
- (setq ftp-host host)
- (make-local-variable 'ftp-file)
- (setq ftp-file file)
- (setq buffer-read-only t)
- (start-process "ftp" (current-buffer) "ftp" "-i" "-n" "-g"))
-
-
- (defun ftp-login (process host user password)
- (message "FTP logging in as %s@%s..." user host)
- (if (ftp-command process
- (format "open %s\nuser %s %s\n" host user password)
- "230.*\n"
- "\\(Connected to \\|220\\|331\\).*\n")
- t
- (switch-to-buffer (process-buffer process))
- (delete-process process)
- (if (listp ftp-password-alist)
- (setq ftp-password-alist (delq (assoc host ftp-password-alist)
- ftp-password-alist)))
- nil))
-
- (defun ftp-command (process command win ignore)
- (process-send-string process command)
- (let ((p 1)
- (case-fold-search t))
- (while (numberp p)
- (cond ;((not (bolp)))
- ((looking-at win)
- (goto-char (point-max))
- (setq p t))
- ((looking-at "^ftp> \\|^\n")
- (goto-char (match-end 0)))
- ((looking-at ignore)
- ;; Ignore status messages whose codes indicate no problem.
- (forward-line 1))
- ((looking-at "^[^0-9]")
- ;; Ignore any lines that don't have status codes.
- (forward-line 1))
- ((not (search-forward "\n" nil t))
- ;; the way asynchronous process-output fucks with (point)
- ;; is really really disgusting.
- (setq p (point))
- (condition-case ()
- (accept-process-output process)
- (error nil))
- (goto-char p))
- (t
- (setq p nil))))
- p))
-
-
- (defun ftp-asynchronous-input-sentinel (process msg)
- (ftp-sentinel process msg t t))
- (defun ftp-synchronous-input-sentinel (process msg)
- (ftp-sentinel process msg nil t))
- (defun ftp-asynchronous-output-sentinel (process msg)
- (ftp-sentinel process msg t nil))
- (defun ftp-synchronous-output-sentinel (process msg)
- (ftp-sentinel process msg nil nil))
-
- (defun ftp-sentinel (process msg asynchronous input)
- (cond ((null (buffer-name (process-buffer process)))
- ;; deleted buffer
- (set-process-buffer process nil))
- ((and (eq (process-status process) 'exit)
- (= (process-exit-status process) 0))
- (save-excursion
- (set-buffer (process-buffer process))
- (let (msg
- (r (if input "[0-9]+ bytes received in [0-9]+\\.[0-9]+ seconds.*$" "[0-9]+ bytes sent in [0-9]+\\.[0-9]+ seconds.*$")))
- (goto-char (point-max))
- (search-backward "226 ")
- (if (looking-at r)
- (search-backward "226 "))
- (let ((p (point)))
- (setq msg (concat (format "ftp %s %s:%s done"
- (if input "read" "write")
- ftp-host ftp-file)
- (if (re-search-forward r nil t)
- (concat ": " (buffer-substring
- (match-beginning 0)
- (match-end 0)))
- "")))
- (let ((buffer-read-only nil))
- (delete-region p (point-max)))
- (save-excursion
- (set-buffer (get-buffer-create "*ftp log*"))
- (let ((buffer-read-only nil))
- (insert msg ?\n)))
- (set-buffer-modified-p nil))
- (if (not input)
- (progn
- (condition-case ()
- (and (boundp 'ftp-temp-file-name)
- ftp-temp-file-name
- (delete-file ftp-temp-file-name))
- (error nil))
- (kill-buffer (current-buffer)))
- ;; You don't want to look at this.
- (let ((kludge (generate-new-buffer (format "%s:%s (ftp)"
- ftp-host ftp-file))))
- (setq kludge (prog1 (buffer-name kludge) (kill-buffer kludge)))
- (rename-buffer kludge)
- ;; ok, you can look again now.
- (ftp-setup-write-file-hooks)))
- (if (and asynchronous
- ;(waiting-for-user-input-p)
- )
- (progn (message "%s" msg)
- (sleep-for 2))))))
- ((memq (process-status process) '(exit signal))
- (save-excursion
- (set-buffer (process-buffer process))
- (setq msg (format "Ftp died (buffer %s): %s"
- (buffer-name (current-buffer))
- msg))
- (let ((buffer-read-only nil))
- (goto-char (point-max))
- (insert ?\n ?\n msg))
- (delete-process proc)
- (set-buffer (get-buffer-create "*ftp log*"))
- (let ((buffer-read-only nil))
- (goto-char (point-max))
- (insert msg))
- (if (waiting-for-user-input-p)
- (error "%s" msg))))))
-
- (defun ftp-setup-write-file-hooks ()
- (let ((hooks write-file-hooks))
- (make-local-variable 'write-file-hooks)
- (setq write-file-hooks (append write-file-hooks
- '(ftp-write-file-hook))))
- (make-local-variable 'revert-buffer-function)
- (setq revert-buffer-function 'ftp-revert-buffer)
- (setq default-directory "/tmp/")
- (setq buffer-file-name (concat default-directory
- (make-temp-name
- (buffer-name (current-buffer)))))
- (setq buffer-read-only nil))
-
- (defun ftp-write-file-hook ()
- (let ((buffer (current-buffer))
- (process (ftp-write-file ftp-host ftp-file)))
- (set-process-sentinel process 'ftp-synchronous-output-sentinel)
- (message "FTP writing %s:%s..." ftp-host ftp-file)
- (while (eq (process-status process) 'run)
- (condition-case ()
- (accept-process-output process)
- (error nil)))
- (and (eq (process-status process) 'exit)
- (= (process-exit-status process) 0)
- (save-excursion
- (set-buffer buffer)
- (set-buffer-modified-p nil))))
- (message "Written")
- t)
-
- (defun ftp-revert-buffer (&rest ignore)
- (let ((process (ftp-find-file ftp-host ftp-file)))
- (set-process-sentinel process 'ftp-synchronous-input-sentinel)
- (message "FTP reverting %s:%s" ftp-host ftp-file)
- (while (eq (process-status process) 'run)
- (condition-case ()
- (accept-process-output process)
- (error nil)))
- (and (eq (process-status process) 'exit)
- (= (process-exit-status process) 0)
- (set-buffer-modified-p nil))
- (message "Reverted")))
-