aboutsummaryrefslogtreecommitdiffstatshomepage
path: root/contrib/emacs/password-store.el
blob: 4b85995d5fbaab084ee0f47bcdf833de9f5fff3b (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
;;; password-store.el --- Password store (pass) support

;; Copyright (C) 2014 Svend Sorensen <svend@ciffer.net>

;; Author: Svend Sorensen <svend@ciffer.net>
;; Version: 0.1
;; Package-Requires: ((dash "1.5.0") (f "0.11.0") (s "1.9.0"))
;; Keywords: pass

;; This file is not part of GNU Emacs.

;; This program 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 3 of the License, or
;; (at your option) any later version.

;; This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.

;;; Commentary:

;; This package provides functions for working with pass ("the
;; standard Unix password manager").
;;
;; http://www.zx2c4.com/projects/password-store/

;;; Code:

(require 'dash)
(require 'f)
(require 's)

(defvar password-store-executable
  (executable-find "pass")
  "Pass executable.")

(defconst password-store-password-length 8
  "Default password length.")

(defconst password-store-timeout 45
  "Number of seconds to wait before clearing the password.")

(defun password-store--run (&rest args)
  "Run pass with ARGS.

Nil arguments are ignored.  Returns the output on success, or
outputs error message on failure."
  (with-temp-buffer
    (let ((exit-code
	   (apply 'call-process
		  (append
		   (list password-store-executable nil (current-buffer) nil)
		   (-reject 'null args)))))
      (if (zerop exit-code)
	  (s-chomp (buffer-string))
	(error (s-chomp (buffer-string)))))))

(defun password-store--run-init (gpg-ids &optional folder)
  (apply 'password-store--run "init"
         (if folder (format "--path=%s" folder))
         gpg-ids))

(defun password-store--run-list (&optional subdir)
  (error "Not implemented"))

(defun password-store--run-grep (&optional string)
  (error "Not implemented"))

(defun password-store--run-find (&optional string)
  (error "Not implemented"))

(defun password-store--run-show (entry)
  (password-store--run "show"
                       entry))

(defun password-store--run-insert (entry password &optional force)
  (error "Not implemented"))

(defun password-store--edit (entry)
  (error "Not implemented"))

(defun password-store--run-generate (entry password-length &optional force no-symbols)
  (password-store--run "generate"
                       (if force "--force")
                       (if no-symbols "--no-symbols")
                       entry
                       (number-to-string password-length)))

(defun password-store--run-remove (entry &optional recursive)
  (password-store--run "remove"
                       "--force"
                       (if recursive "--recursive")
                       entry))

(defun password-store--run-rename (entry new-entry &optional force)
  (password-store--run "rename"
                       (if force "--force")
                       entry
                       new-entry))

(defun password-store--run-copy (entry new-entry &optional force)
  (password-store--run "copy"
                       (if force "--force")
                       entry
                       new-entry))

(defun password-store--run-git (&rest args)
  (apply 'password-store--run "git"
         args))

(defun password-store--run-version ()
  (password-store--run "version"))

(defvar password-store-kill-ring-pointer nil
  "The tail of of the kill ring ring whose car is the password.")

(defun password-store-dir ()
  "Return password store directory."
  (or (getenv "PASSWORD_STORE_DIR")
      "~/.password-store"))

(defun password-store--entry-to-file (entry)
  "Return file name corresponding to ENTRY."
  (concat (f-join (password-store-dir) entry) ".gpg"))

(defun password-store--file-to-entry (file)
  "Return entry name corresponding to FILE."
  (f-no-ext (f-relative file (password-store-dir))))

(defun password-store--completing-read ()
  "Read a password entry in the minibuffer, with completion."
  (completing-read "Password entry: " (password-store-list)))

(defun password-store-list (&optional subdir)
  "List password entries under SUBDIR."
  (unless subdir (setq subdir ""))
  (let ((dir (f-join (password-store-dir) subdir)))
    (if (f-directory? dir)
	(mapcar 'password-store--file-to-entry
		(f-files dir (lambda (file) (equal (f-ext file) "gpg")) t)))))

;;;###autoload
(defun password-store-edit (entry)
  "Edit password for ENTRY.

This edits the password file directly in Emacs, so changes will
need to be commited manually if git is being used."
  (interactive (list (password-store--completing-read)))
  (find-file (password-store--entry-to-file entry)))

;;;###autoload
(defun password-store-get (entry)
  "Return password for ENTRY.

Returns the first line of the password data."
  (car (s-lines (password-store--run-show entry))))

;;;###autoload
(defun password-store-clear ()
  "Clear password in kill ring."
  (interactive)
  (if password-store-kill-ring-pointer
      (progn
	(setcar password-store-kill-ring-pointer "")
	(setq password-store-kill-ring-pointer nil)
	(message "Password cleared."))))

;;;###autoload
(defun password-store-copy (entry)
  "Add password for ENTRY to kill ring.

Clear previous password from kill ring.  Pointer to kill ring is
stored in `password-store-kill-ring-pointer'.  Password is cleared
after `password-store-timeout' seconds."
  (interactive (list (password-store--completing-read)))
  (let ((password (password-store-get entry)))
    (password-store-clear)
    (kill-new password)
    (setq password-store-kill-ring-pointer kill-ring-yank-pointer)
    (message "Copied %s to the kill ring. Will clear in %s seconds." entry password-store-timeout)
    (run-at-time password-store-timeout nil 'password-store-clear)))

;;;###autoload
(defun password-store-generate (entry &optional password-length)
  "Generate a new password for ENTRY with PASSWORD-LENGTH.

Default PASSWORD-LENGTH is `password-store-password-length'."
  (interactive (list (read-string "Password entry: ")
		     (when current-prefix-arg
		       (abs (prefix-numeric-value current-prefix-arg)))))
  (unless password-length (setq password-length password-store-password-length))
  ;; A message with the output of the command is not printed because
  ;; the output contains the password.
  (password-store--run-generate entry password-length t)
  nil)

;;;###autoload
(defun password-store-insert (entry password)
  "Insert a new ENTRY containing PASSWORD."
  (interactive (list (read-string "Password entry: ")
		     (read-passwd "Password: " t)))
  (message (shell-command-to-string (format "echo %s | %s insert -m -f %s" password password-store-executable entry))))

;;;###autoload
(defun password-store-remove (entry)
  "Remove existing password for ENTRY."
  (interactive (list (password-store--completing-read)))
  (message (password-store--run-remove entry t)))

;;;###autoload
(defun password-store-url (entry)
  "Browse URL stored in ENTRY.

This will only browse URLs that start with http:// or http:// to
avoid sending a password to the browser."
  (interactive (list (password-store--completing-read)))
  (let ((url (password-store-get entry)))
    (if (or (string-prefix-p "http://" url)
	    (string-prefix-p "https://" url))
	(browse-url url)
      (error "%s" "String does not look like a URL"))))

;;;###autoload
(defun password-store-version ()
  "Show version of pass executable."
  (interactive)
  (message (password-store--run-version)))

(provide 'password-store)

;;; password-store.el ends here