1 ;;; auth-source.el --- authentication sources for Gnus and Emacs
3 ;; Copyright (C) 2008-2011 Free Software Foundation, Inc.
5 ;; Author: Ted Zlatanov <tzz@lifelogs.com>
8 ;; This file is part of GNU Emacs.
10 ;; GNU Emacs is free software: you can redistribute it and/or modify
11 ;; it under the terms of the GNU General Public License as published by
12 ;; the Free Software Foundation, either version 3 of the License, or
13 ;; (at your option) any later version.
15 ;; GNU Emacs is distributed in the hope that it will be useful,
16 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 ;; GNU General Public License for more details.
20 ;; You should have received a copy of the GNU General Public License
21 ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
25 ;; This is the auth-source.el package. It lets users tell Gnus how to
26 ;; authenticate in a single place. Simplicity is the goal. Instead
27 ;; of providing 5000 options, we'll stick to simple, easy to
28 ;; understand options.
30 ;; See the auth.info Info documentation for details.
34 ;; - never decode the backend file unless it's necessary
35 ;; - a more generic way to match backends and search backend contents
36 ;; - absorb netrc.el and simplify it
37 ;; - protect passwords better
38 ;; - allow creating and changing netrc lines (not files) e.g. change a password
42 (require 'password-cache)
47 (eval-when-compile (require 'cl))
49 (or (ignore-errors (require 'eieio))
50 ;; gnus-fallback-lib/ from gnus/lisp/gnus-fallback-lib
52 (let ((load-path (cons (expand-file-name
53 "gnus-fallback-lib/eieio"
54 (file-name-directory (locate-library "gnus")))
58 "eieio not found in `load-path' or gnus-fallback-lib/ directory.")))
60 (autoload 'secrets-create-item "secrets")
61 (autoload 'secrets-delete-item "secrets")
62 (autoload 'secrets-get-alias "secrets")
63 (autoload 'secrets-get-attributes "secrets")
64 (autoload 'secrets-get-secret "secrets")
65 (autoload 'secrets-list-collections "secrets")
66 (autoload 'secrets-search-items "secrets")
68 (defvar secrets-enabled)
70 (defgroup auth-source nil
71 "Authentication sources."
72 :version "23.1" ;; No Gnus
76 (defcustom auth-source-cache-expiry 7200
77 "How many seconds passwords are cached, or nil to disable
78 expiring. Overrides `password-cache-expiry' through a
81 :type '(choice (const :tag "Never" nil)
82 (const :tag "All Day" 86400)
83 (const :tag "2 Hours" 7200)
84 (const :tag "30 Minutes" 1800)
85 (integer :tag "Seconds")))
87 (defclass auth-source-backend ()
92 :documentation "The backend type.")
93 (source :initarg :source
96 :documentation "The backend source.")
101 :documentation "The backend host.")
106 :documentation "The backend user.")
111 :documentation "The backend protocol.")
112 (create-function :initarg :create-function
116 :documentation "The create function.")
117 (search-function :initarg :search-function
121 :documentation "The search function.")))
123 (defcustom auth-source-protocols '((imap "imap" "imaps" "143" "993")
124 (pop3 "pop3" "pop" "pop3s" "110" "995")
128 "List of authentication protocols and their names"
131 :version "23.2" ;; No Gnus
132 :type '(repeat :tag "Authentication Protocols"
133 (cons :tag "Protocol Entry"
134 (symbol :tag "Protocol")
136 (string :tag "Name")))))
138 ;;; generate all the protocols in a format Customize can use
139 ;;; TODO: generate on the fly from auth-source-protocols
140 (defconst auth-source-protocols-customize
142 (let ((p (car-safe a)))
144 :tag (upcase (symbol-name p))
146 auth-source-protocols))
148 (defvar auth-source-creation-defaults nil
149 "Defaults for creating token values. Usually let-bound.")
151 (make-obsolete 'auth-source-hide-passwords nil "Emacs 24.1")
153 (defvar auth-source-magic "auth-source-magic ")
155 (defcustom auth-source-do-cache t
156 "Whether auth-source should cache information with `password-cache'."
158 :version "23.2" ;; No Gnus
161 (defcustom auth-source-debug nil
162 "Whether auth-source should log debug messages.
164 If the value is nil, debug messages are not logged.
166 If the value is t, debug messages are logged with `message'. In
167 that case, your authentication data will be in the clear (except
170 If the value is a function, debug messages are logged by calling
171 that function using the same arguments as `message'."
173 :version "23.2" ;; No Gnus
175 :tag "auth-source debugging mode"
176 (const :tag "Log using `message' to the *Messages* buffer" t)
177 (function :tag "Function that takes arguments like `message'")
178 (const :tag "Don't log anything" nil)))
180 (defcustom auth-sources '("~/.authinfo.gpg" "~/.authinfo" "~/.netrc")
181 "List of authentication sources.
183 The default will get login and password information from
184 \"~/.authinfo.gpg\", which you should set up with the EPA/EPG
185 packages to be encrypted. If that file doesn't exist, it will
186 try the unencrypted version \"~/.authinfo\" and the famous
189 See the auth.info manual for details.
191 Each entry is the authentication type with optional properties.
193 It's best to customize this with `M-x customize-variable' because the choices
194 can get pretty complex."
196 :version "24.1" ;; No Gnus
197 :type `(repeat :tag "Authentication Sources"
199 (string :tag "Just a file")
200 (const :tag "Default Secrets API Collection" 'default)
201 (const :tag "Login Secrets API Collection" "secrets:Login")
202 (const :tag "Temp Secrets API Collection" "secrets:session")
203 (list :tag "Source definition"
204 (const :format "" :value :source)
205 (choice :tag "Authentication backend choice"
206 (string :tag "Authentication Source (file)")
208 :tag "Secret Service API/KWallet/GNOME Keyring"
209 (const :format "" :value :secrets)
210 (choice :tag "Collection to use"
211 (string :tag "Collection name")
212 (const :tag "Default" 'default)
213 (const :tag "Login" "Login")
215 :tag "Temporary" "session"))))
216 (repeat :tag "Extra Parameters" :inline t
217 (choice :tag "Extra parameter"
220 (const :format "" :value :host)
221 (choice :tag "Host (machine) choice"
224 :tag "Regular expression")))
227 (const :format "" :value :port)
231 ,@auth-source-protocols-customize))
232 (list :tag "User" :inline t
233 (const :format "" :value :user)
234 (choice :tag "Personality/Username"
236 (string :tag "Name")))))))))
238 (defcustom auth-source-gpg-encrypt-to t
239 "List of recipient keys that `authinfo.gpg' encrypted to.
240 If the value is not a list, symmetric encryption will be used."
242 :version "24.1" ;; No Gnus
243 :type '(choice (const :tag "Symmetric encryption" t)
244 (repeat :tag "Recipient public keys"
245 (string :tag "Recipient public key"))))
247 ;; temp for debugging
248 ;; (unintern 'auth-source-protocols)
249 ;; (unintern 'auth-sources)
250 ;; (customize-variable 'auth-sources)
251 ;; (setq auth-sources nil)
252 ;; (format "%S" auth-sources)
253 ;; (customize-variable 'auth-source-protocols)
254 ;; (setq auth-source-protocols nil)
255 ;; (format "%S" auth-source-protocols)
256 ;; (auth-source-pick nil :host "a" :port 'imap)
257 ;; (auth-source-user-or-password "login" "imap.myhost.com" 'imap)
258 ;; (auth-source-user-or-password "password" "imap.myhost.com" 'imap)
259 ;; (auth-source-user-or-password-imap "login" "imap.myhost.com")
260 ;; (auth-source-user-or-password-imap "password" "imap.myhost.com")
261 ;; (auth-source-protocol-defaults 'imap)
263 ;; (let ((auth-source-debug 'debug)) (auth-source-do-debug "hello"))
264 ;; (let ((auth-source-debug t)) (auth-source-do-debug "hello"))
265 ;; (let ((auth-source-debug nil)) (auth-source-do-debug "hello"))
266 (defun auth-source-do-debug (&rest msg)
267 (when auth-source-debug
268 (apply 'auth-source-do-warn msg)))
270 (defun auth-source-do-warn (&rest msg)
272 ;; set logger to either the function in auth-source-debug or 'message
273 ;; note that it will be 'message if auth-source-debug is nil
274 (if (functionp auth-source-debug)
280 ;; (auth-source-pick nil :host "any" :port 'imap :user "joe")
281 ;; (auth-source-pick t :host "any" :port 'imap :user "joe")
282 ;; (setq auth-sources '((:source (:secrets default) :host t :port t :user "joe")
283 ;; (:source (:secrets "session") :host t :port t :user "joe")
284 ;; (:source (:secrets "Login") :host t :port t)
285 ;; (:source "~/.authinfo.gpg" :host t :port t)))
287 ;; (setq auth-sources '((:source (:secrets default) :host t :port t :user "joe")
288 ;; (:source (:secrets "session") :host t :port t :user "joe")
289 ;; (:source (:secrets "Login") :host t :port t)
292 ;; (setq auth-sources '((:source "~/.authinfo.gpg" :host t :port t)))
294 ;; (auth-source-backend-parse "myfile.gpg")
295 ;; (auth-source-backend-parse 'default)
296 ;; (auth-source-backend-parse "secrets:Login")
298 (defun auth-source-backend-parse (entry)
299 "Creates an auth-source-backend from an ENTRY in `auth-sources'."
300 (auth-source-backend-parse-parameters
303 ;; take 'default and recurse to get it as a Secrets API default collection
304 ;; matching any user, host, and protocol
306 (auth-source-backend-parse '(:source (:secrets default))))
307 ;; take secrets:XYZ and recurse to get it as Secrets API collection "XYZ"
308 ;; matching any user, host, and protocol
309 ((and (stringp entry) (string-match "^secrets:\\(.+\\)" entry))
310 (auth-source-backend-parse `(:source (:secrets ,(match-string 1 entry)))))
311 ;; take just a file name and recurse to get it as a netrc file
312 ;; matching any user, host, and protocol
314 (auth-source-backend-parse `(:source ,entry)))
316 ;; a file name with parameters
317 ((stringp (plist-get entry :source))
319 (plist-get entry :source)
320 :source (plist-get entry :source)
322 :search-function 'auth-source-netrc-search
323 :create-function 'auth-source-netrc-create))
325 ;; the Secrets API. We require the package, in order to have a
326 ;; defined value for `secrets-enabled'.
328 (not (null (plist-get entry :source))) ; the source must not be nil
329 (listp (plist-get entry :source)) ; and it must be a list
330 (require 'secrets nil t) ; and we must load the Secrets API
331 secrets-enabled) ; and that API must be enabled
333 ;; the source is either the :secrets key in ENTRY or
334 ;; if that's missing or nil, it's "session"
335 (let ((source (or (plist-get (plist-get entry :source) :secrets)
338 ;; if the source is a symbol, we look for the alias named so,
339 ;; and if that alias is missing, we use "Login"
340 (when (symbolp source)
341 (setq source (or (secrets-get-alias (symbol-name source))
344 (if (featurep 'secrets)
346 (format "Secrets API (%s)" source)
349 :search-function 'auth-source-secrets-search
350 :create-function 'auth-source-secrets-create)
352 "auth-source-backend-parse: no Secrets API, ignoring spec: %S" entry)
354 (format "Ignored Secrets API (%s)" source)
361 "auth-source-backend-parse: invalid backend spec: %S" entry)
367 (defun auth-source-backend-parse-parameters (entry backend)
368 "Fills in the extra auth-source-backend parameters of ENTRY.
369 Using the plist ENTRY, get the :host, :port, and :user search
371 (let ((entry (if (stringp entry)
375 (when (setq val (plist-get entry :host))
376 (oset backend host val))
377 (when (setq val (plist-get entry :user))
378 (oset backend user val))
379 (when (setq val (plist-get entry :port))
380 (oset backend port val)))
383 ;; (mapcar 'auth-source-backend-parse auth-sources)
385 (defun* auth-source-search (&rest spec
386 &key type max host user port secret
389 "Search or modify authentication backends according to SPEC.
391 This function parses `auth-sources' for matches of the SPEC
392 plist. It can optionally create or update an authentication
393 token if requested. A token is just a standard Emacs property
394 list with a :secret property that can be a function; all the
395 other properties will always hold scalar values.
397 Typically the :secret property, if present, contains a password.
399 Common search keys are :max, :host, :port, and :user. In
400 addition, :create specifies how tokens will be or created.
401 Finally, :type can specify which backend types you want to check.
403 A string value is always matched literally. A symbol is matched
404 as its string value, literally. All the SPEC values can be
405 single values (symbol or string) or lists thereof (in which case
406 any of the search terms matches).
408 :create t means to create a token if possible.
410 A new token will be created if no matching tokens were found.
411 The new token will have only the keys the backend requires. For
412 the netrc backend, for instance, that's the user, host, and
417 \(let ((auth-source-creation-defaults '((user . \"defaultUser\")
418 (A . \"default A\"))))
419 (auth-source-search :host \"mine\" :type 'netrc :max 1
420 :P \"pppp\" :Q \"qqqq\"
425 \"Search for any entry matching host 'mine' in backends of type
426 'netrc', maximum one result.
428 Create a new entry if you found none. The netrc backend will
429 automatically require host, user, and port. The host will be
430 'mine'. We prompt for the user with default 'defaultUser' and
431 for the port without a default. We will not prompt for A, Q,
432 or P. The resulting token will only have keys user, host, and
435 :create '(A B C) also means to create a token if possible.
437 The behavior is like :create t but if the list contains any
438 parameter, that parameter will be required in the resulting
439 token. The value for that parameter will be obtained from the
440 search parameters or from user input. If any queries are needed,
441 the alist `auth-source-creation-defaults' will be checked for the
446 \(let ((auth-source-creation-defaults '((user . \"defaultUser\")
447 (A . \"default A\"))))
448 (auth-source-search :host '(\"nonesuch\" \"twosuch\") :type 'netrc :max 1
449 :P \"pppp\" :Q \"qqqq\"
454 \"Search for any entry matching host 'nonesuch'
455 or 'twosuch' in backends of type 'netrc', maximum one result.
457 Create a new entry if you found none. The netrc backend will
458 automatically require host, user, and port. The host will be
459 'nonesuch' and Q will be 'qqqq'. We prompt for A with default
460 'default A', for B and port with default nil, and for the
461 user with default 'defaultUser'. We will not prompt for Q. The
462 resulting token will have keys user, host, port, A, B, and Q.
463 It will not have P with any value, even though P is used in the
464 search to find only entries that have P set to 'pppp'.\"
466 When multiple values are specified in the search parameter, the
467 user is prompted for which one. So :host (X Y Z) would ask the
468 user to choose between X, Y, and Z.
470 This creation can fail if the search was not specific enough to
471 create a new token (it's up to the backend to decide that). You
472 should `catch' the backend-specific error as usual. Some
473 backends (netrc, at least) will prompt the user rather than throw
476 :delete t means to delete any found entries. nil by default.
477 Use `auth-source-delete' in ELisp code instead of calling
478 `auth-source-search' directly with this parameter.
480 :type (X Y Z) will check only those backend types. 'netrc and
481 'secrets are the only ones supported right now.
483 :max N means to try to return at most N items (defaults to 1).
484 When 0 the function will return just t or nil to indicate if any
485 matches were found. More than N items may be returned, depending
486 on the search and the backend.
488 :host (X Y Z) means to match only hosts X, Y, or Z according to
489 the match rules above. Defaults to t.
491 :user (X Y Z) means to match only users X, Y, or Z according to
492 the match rules above. Defaults to t.
494 :port (P Q R) means to match only protocols P, Q, or R.
497 :K (V1 V2 V3) for any other key K will match values V1, V2, or
498 V3 (note the match rules above).
500 The return value is a list with at most :max tokens. Each token
501 is a plist with keys :backend :host :port :user, plus any other
502 keys provided by the backend (notably :secret). But note the
503 exception for :max 0, which see above.
505 The token's :secret key can hold a function. In that case you
506 must call it to obtain the actual value."
507 (let* ((backends (mapcar 'auth-source-backend-parse auth-sources))
509 (ignored-keys '(:create :delete :max))
510 (keys (loop for i below (length spec) by 2
511 unless (memq (nth i spec) ignored-keys)
512 collect (nth i spec)))
513 (found (auth-source-recall spec))
514 filtered-backends accessor-key found-here goal matches backend)
516 (if (and found auth-source-do-cache)
517 (auth-source-do-debug
518 "auth-source-search: found %d CACHED results matching %S"
522 (or (eq t create) (listp create)) t
523 "Invalid auth-source :create parameter (must be nil, t, or a list): %s %s")
525 (setq filtered-backends (copy-sequence backends))
526 (dolist (backend backends)
528 ;; ignore invalid slots
529 (condition-case signal
530 (unless (eval `(auth-source-search-collection
532 (oref backend ,key)))
533 (setq filtered-backends (delq backend filtered-backends))
535 (invalid-slot-name))))
537 (auth-source-do-debug
538 "auth-source-search: found %d backends matching %S"
539 (length filtered-backends) spec)
541 ;; (debug spec "filtered" filtered-backends)
543 ;; First go through all the backends without :create, so we can
545 (let ((uspec (copy-sequence spec)))
546 (plist-put uspec :create nil)
547 (dolist (backend filtered-backends)
549 (slot-value backend 'search-function)
553 (push (list backend match) matches)))))
554 ;; If we didn't find anything, then we allow the backend(s) to
555 ;; create the entries.
558 (dolist (backend filtered-backends)
561 (slot-value backend 'search-function)
567 (push (list backend match) matches))))))
569 (setq backend (caar matches)
570 found-here (cadar matches))
573 ;; if max is 0, as soon as we find something, return it
574 (when (and (zerop max) (> 0 (length found-here)))
577 ;; decrement the goal by the number of new results
578 (decf goal (length found-here))
579 ;; and append the new results to the full list
580 (setq found (append found found-here))
582 (auth-source-do-debug
583 "auth-source-search: found %d results (max %d/%d) in %S matching %S"
584 (length found-here) max goal backend spec)
586 ;; return full list if the goal is 0 or negative
587 (when (zerop (max 0 goal))
590 ;; change the :max parameter in the spec to the goal
591 (setq spec (plist-put spec :max goal))
593 (when (and found auth-source-do-cache)
594 (auth-source-remember spec found))))
598 ;;; (auth-source-search :max 1)
599 ;;; (funcall (plist-get (nth 0 (auth-source-search :max 1)) :secret))
600 ;;; (auth-source-search :host "nonesuch" :type 'netrc :K 1)
601 ;;; (auth-source-search :host "nonesuch" :type 'secrets)
603 (defun* auth-source-delete (&rest spec
606 "Delete entries from the authentication backends according to SPEC.
607 Calls `auth-source-search' with the :delete property in SPEC set to t.
608 The backend may not actually delete the entries.
610 Returns the deleted entries."
611 (auth-source-search (plist-put spec :delete t)))
613 (defun auth-source-search-collection (collection value)
614 "Returns t is VALUE is t or COLLECTION is t or contains VALUE."
615 (when (and (atom collection) (not (eq t collection)))
616 (setq collection (list collection)))
618 ;; (debug :collection collection :value value)
619 (or (eq collection t)
621 (equal collection value)
622 (member value collection)))
624 (defun auth-source-forget-all-cached ()
625 "Forget all cached auth-source data."
627 (loop for sym being the symbols of password-data
628 ;; when the symbol name starts with auth-source-magic
629 when (string-match (concat "^" auth-source-magic)
632 do (password-cache-remove (symbol-name sym))))
634 (defun auth-source-remember (spec found)
635 "Remember FOUND search results for SPEC."
636 (let ((password-cache-expiry auth-source-cache-expiry))
638 (concat auth-source-magic (format "%S" spec)) found)))
640 (defun auth-source-recall (spec)
641 "Recall FOUND search results for SPEC."
642 (password-read-from-cache
643 (concat auth-source-magic (format "%S" spec))))
645 (defun auth-source-forget (spec)
646 "Forget any cached data matching SPEC exactly.
648 This is the same SPEC you passed to `auth-source-search'.
649 Returns t or nil for forgotten or not found."
650 (password-cache-remove (concat auth-source-magic (format "%S" spec))))
652 ;;; (loop for sym being the symbols of password-data when (string-match (concat "^" auth-source-magic) (symbol-name sym)) collect (symbol-name sym))
654 ;;; (auth-source-remember '(:host "wedd") '(4 5 6))
655 ;;; (auth-source-remember '(:host "xedd") '(1 2 3))
656 ;;; (auth-source-recall '(:host "xedd"))
657 ;;; (auth-source-recall '(:host t))
658 ;;; (auth-source-forget+ :host t)
660 (defun* auth-source-forget+ (&rest spec &allow-other-keys)
661 "Forget any cached data matching SPEC. Returns forgotten count.
663 This is not a full `auth-source-search' spec but works similarly.
664 For instance, \(:host \"myhost\" \"yourhost\") would find all the
665 cached data that was found with a search for those two hosts,
666 while \(:host t) would find all host entries."
669 (loop for sym being the symbols of password-data
670 ;; when the symbol name matches with auth-source-magic
671 when (and (setq sname (symbol-name sym))
672 (string-match (concat "^" auth-source-magic "\\(.+\\)")
674 ;; and the spec matches what was stored in the cache
675 (auth-source-specmatchp spec (read (match-string 1 sname))))
678 (password-cache-remove sname)
682 (defun auth-source-specmatchp (spec stored)
683 (let ((keys (loop for i below (length spec) by 2
684 collect (nth i spec))))
687 (unless (auth-source-search-collection (plist-get stored key)
688 (plist-get spec key))
692 ;;; Backend specific parsing: netrc/authinfo backend
694 (defun auth-source-ensure-strings (values)
695 (unless (listp values)
696 (setq values (list values)))
697 (mapcar (lambda (value)
703 (defvar auth-source-netrc-cache nil)
705 ;;; (auth-source-netrc-parse "~/.authinfo.gpg")
706 (defun* auth-source-netrc-parse (&rest
708 &key file max host user port delete
710 "Parse FILE and return a list of all entries in the file.
711 Note that the MAX parameter is used so we can exit the parse early."
713 ;; We got already parsed contents; just return it.
715 (when (file-exists-p file)
716 (setq port (auth-source-ensure-strings port))
718 (let ((tokens '("machine" "host" "default" "login" "user"
719 "password" "account" "macdef" "force"
721 (max (or max 5000)) ; sanity check: default to stop at 5K
723 alist elem result pair)
724 (if (and auth-source-netrc-cache
725 (equal (car auth-source-netrc-cache)
726 (nth 5 (file-attributes file))))
727 (insert (base64-decode-string
728 (rot13-string (cdr auth-source-netrc-cache))))
729 (insert-file-contents file)
730 (when (string-match "\\.gpg\\'" file)
731 ;; Store the contents of the file heavily encrypted in memory.
732 (setq auth-source-netrc-cache
733 (cons (nth 5 (file-attributes file))
735 (base64-encode-string
736 (buffer-string)))))))
737 (goto-char (point-min))
738 ;; Go through the file, line by line.
739 (while (and (not (eobp))
742 (narrow-to-region (point) (point-at-eol))
743 ;; For each line, get the tokens and values.
745 (skip-chars-forward "\t ")
746 ;; Skip lines that begin with a "#".
747 (if (eq (char-after) ?#)
748 (goto-char (point-max))
751 (if (= (following-char) ?\")
752 (read (current-buffer))
754 (point) (progn (skip-chars-forward "^\t ")
757 ((equal elem "macdef")
758 ;; We skip past the macro definition.
760 (while (and (zerop (forward-line 1))
762 (narrow-to-region (point) (point)))
763 ((member elem tokens)
764 ;; Tokens that don't have a following value are ignored,
766 (when (and pair (or (cdr pair)
767 (equal (car pair) "default")))
769 (setq pair (list elem)))
771 ;; Values that haven't got a preceding token are ignored.
775 (setq pair nil)))))))
779 (auth-source-search-collection
782 (aget alist "machine")
785 (auth-source-search-collection
789 (aget alist "account")
792 (auth-source-search-collection
796 (aget alist "protocol")
799 (push (nreverse alist) result)
800 ;; to delete a line, we just comment it out
802 (goto-char (point-min))
811 (when auth-source-gpg-encrypt-to
812 ;; (see bug#7487) making `epa-file-encrypt-to' local to
813 ;; this buffer lets epa-file skip the key selection query
814 ;; (see the `local-variable-p' check in
815 ;; `epa-file-write-region').
816 (unless (local-variable-p 'epa-file-encrypt-to (current-buffer))
817 (make-local-variable 'epa-file-encrypt-to))
818 (if (listp auth-source-gpg-encrypt-to)
819 (setq epa-file-encrypt-to auth-source-gpg-encrypt-to)))
821 ;; ask AFTER we've successfully opened the file
822 (when (y-or-n-p (format "Save file %s? (%d modifications)"
824 (write-region (point-min) (point-max) file nil 'silent)
825 (auth-source-do-debug
826 "auth-source-netrc-parse: modified %d lines in %s"
829 (nreverse result))))))
831 (defun auth-source-netrc-normalize (alist)
832 (mapcar (lambda (entry)
834 (while (setq item (pop entry))
839 (setq k (cond ((member k '("machine")) "host")
840 ((member k '("login" "account")) "user")
841 ((member k '("protocol")) "port")
842 ((member k '("password")) "secret")
845 ;; send back the secret in a function (lexical binding)
846 (when (equal k "secret")
847 (setq v (lexical-let ((v v))
850 (setq ret (plist-put ret
851 (intern (concat ":" k))
857 ;;; (setq secret (plist-get (nth 0 (auth-source-search :host t :type 'netrc :K 1 :max 1)) :secret))
860 (defun* auth-source-netrc-search (&rest
862 &key backend create delete
863 type max host user port
865 "Given a property list SPEC, return search matches from the :backend.
866 See `auth-source-search' for details on SPEC."
867 ;; just in case, check that the type is correct (null or same as the backend)
868 (assert (or (null type) (eq type (oref backend type)))
869 t "Invalid netrc search: %s %s")
871 (let ((results (auth-source-netrc-normalize
872 (auth-source-netrc-parse
875 :file (oref backend source)
878 :port (or port t)))))
880 ;; if we need to create an entry AND none were found to match
882 (= 0 (length results)))
884 ;; create based on the spec and record the value
886 ;; if the user did not want to create the entry
887 ;; in the file, it will be returned
888 (apply (slot-value backend 'create-function) spec)
889 ;; if not, we do the search again without :create
890 ;; to get the updated data.
892 ;; the result will be returned, even if the search fails
893 (apply 'auth-source-netrc-search
894 (plist-put spec :create nil)))))
897 ;;; (auth-source-search :host "nonesuch" :type 'netrc :max 1 :create t)
898 ;;; (auth-source-search :host "nonesuch" :type 'netrc :max 1 :create t :create-extra-keys '((A "default A") (B)))
900 (defun* auth-source-netrc-create (&rest spec
902 secret host user port create
904 (let* ((base-required '(host user port secret))
905 ;; we know (because of an assertion in auth-source-search) that the
906 ;; :create parameter is either t or a list (which includes nil)
907 (create-extra (if (eq t create) nil create))
908 (required (append base-required create-extra))
909 (file (oref backend source))
912 ;; `valist' is an alist
914 ;; `artificial' will be returned if no creation is needed
917 ;; only for base required elements (defined as function parameters):
918 ;; fill in the valist with whatever data we may have from the search
919 ;; we complete the first value if it's a list and use the value otherwise
920 (dolist (br base-required)
921 (when (symbol-value br)
922 (let ((br-choice (cond
923 ;; all-accepting choice (predicate is t)
924 ((eq t (symbol-value br)) nil)
925 ;; just the value otherwise
926 (t (symbol-value br)))))
928 (aput 'valist br br-choice)))))
930 ;; for extra required elements, see if the spec includes a value for them
931 (dolist (er create-extra)
932 (let ((name (concat ":" (symbol-name er)))
933 (keys (loop for i below (length spec) by 2
934 collect (nth i spec))))
936 (when (equal (symbol-name k) name)
937 (aput 'valist er (plist-get spec k))))))
939 ;; for each required element
941 (let* ((data (aget valist r))
942 (given-default (aget auth-source-creation-defaults r))
943 ;; the defaults are simple
945 ((and (not given-default) (eq r 'user))
947 ;; note we need this empty string
948 ((and (not given-default) (eq r 'port))
951 ;; the prompt's default string depends on the data so far
952 (default-string (if (and default (< 0 (length default)))
953 (format " (default %s)" default)
955 ;; the prompt should also show what's entered so far
956 (user-value (aget valist 'user))
957 (host-value (aget valist 'host))
958 (port-value (aget valist 'port))
959 ;; note this handles lists by just printing them
960 ;; later we allow the user to use completing-read to pick
961 (info-so-far (concat (if user-value
962 (format "%s@" user-value)
965 (format "%s" host-value)
968 ;; this distinguishes protocol between
969 (if (zerop (length port-value))
970 "" ; 'entered as "no default"' vs.
971 (format ":%s" port-value)) ; given
972 ;; and this is when the protocol is unknown
975 ;; now prompt if the search SPEC did not include a required key;
976 ;; take the result and put it in `data' AND store it in `valist'
980 ((and (null data) (eq r 'secret))
981 ;; special case prompt for passwords
982 (read-passwd (format "Password for %s: " info-so-far)))
985 (format "Enter %s for %s%s: "
986 r info-so-far default-string)
990 (format "Enter %s for %s (TAB to see the choices): "
995 ;; note the default is nil, but if the user
996 ;; hits RET we'll get "", which is handled OK later
1001 (setq artificial (plist-put artificial
1002 (intern (concat ":" (symbol-name r)))
1004 (lexical-let ((data data))
1008 ;; when r is not an empty string...
1009 (when (and (stringp data)
1010 (< 0 (length data)))
1011 (let ((printer (lambda (hide)
1012 ;; append the key (the symbol name of r)
1013 ;; and the value in r
1016 (if (zerop (length add)) "" " ")
1017 ;; remap auth-source tokens to netrc
1021 ('secret "password")
1022 ('port "port") ; redundant but clearer
1023 (t (symbol-name r)))
1024 ;; the value will be printed in %S format
1025 (if (and hide (eq r 'secret))
1028 (setq add (concat add (funcall printer nil)))
1029 (setq show (concat show (funcall printer t)))))))
1032 (when (file-exists-p file)
1033 (insert-file-contents file))
1034 (when auth-source-gpg-encrypt-to
1035 ;; (see bug#7487) making `epa-file-encrypt-to' local to
1036 ;; this buffer lets epa-file skip the key selection query
1037 ;; (see the `local-variable-p' check in
1038 ;; `epa-file-write-region').
1039 (unless (local-variable-p 'epa-file-encrypt-to (current-buffer))
1040 (make-local-variable 'epa-file-encrypt-to))
1041 (if (listp auth-source-gpg-encrypt-to)
1042 (setq epa-file-encrypt-to auth-source-gpg-encrypt-to)))
1043 (goto-char (point-max))
1045 ;; ask AFTER we've successfully opened the file
1046 (if (y-or-n-p (format "Add to file %s: line [%s]" file show))
1051 (write-region (point-min) (point-max) file nil 'silent)
1052 (auth-source-do-debug
1053 "auth-source-netrc-create: wrote 1 new line to %s"
1056 (list artificial)))))
1058 ;;; Backend specific parsing: Secrets API backend
1060 ;;; (let ((auth-sources '(default))) (auth-source-search :max 1 :create t))
1061 ;;; (let ((auth-sources '(default))) (auth-source-search :max 1 :delete t))
1062 ;;; (let ((auth-sources '(default))) (auth-source-search :max 1))
1063 ;;; (let ((auth-sources '(default))) (auth-source-search))
1064 ;;; (let ((auth-sources '("secrets:Login"))) (auth-source-search :max 1))
1065 ;;; (let ((auth-sources '("secrets:Login"))) (auth-source-search :max 1 :signon_realm "https://git.gnus.org/Git"))
1067 (defun* auth-source-secrets-search (&rest
1069 &key backend create delete label
1070 type max host user port
1072 "Search the Secrets API; spec is like `auth-source'.
1074 The :label key specifies the item's label. It is the only key
1075 that can specify a substring. Any :label value besides a string
1076 will allow any label.
1078 All other search keys must match exactly. If you need substring
1079 matching, do a wider search and narrow it down yourself.
1081 You'll get back all the properties of the token as a plist.
1083 Here's an example that looks for the first item in the 'Login'
1086 \(let ((auth-sources '(\"secrets:Login\")))
1087 (auth-source-search :max 1)
1089 Here's another that looks for the first item in the 'Login'
1090 Secrets collection whose label contains 'gnus':
1092 \(let ((auth-sources '(\"secrets:Login\")))
1093 (auth-source-search :max 1 :label \"gnus\")
1095 And this one looks for the first item in the 'Login' Secrets
1096 collection that's a Google Chrome entry for the git.gnus.org site
1097 authentication tokens:
1099 \(let ((auth-sources '(\"secrets:Login\")))
1100 (auth-source-search :max 1 :signon_realm \"https://git.gnus.org/Git\"))
1104 (assert (not create) nil
1105 "The Secrets API auth-source backend doesn't support creation yet")
1107 ;; (secrets-delete-item coll elt)
1108 (assert (not delete) nil
1109 "The Secrets API auth-source backend doesn't support deletion yet")
1111 (let* ((coll (oref backend source))
1112 (max (or max 5000)) ; sanity check: default to stop at 5K
1113 (ignored-keys '(:create :delete :max :backend :label))
1114 (search-keys (loop for i below (length spec) by 2
1115 unless (memq (nth i spec) ignored-keys)
1116 collect (nth i spec)))
1117 ;; build a search spec without the ignored keys
1118 ;; if a search key is nil or t (match anything), we skip it
1119 (search-spec (apply 'append (mapcar
1121 (if (or (null (plist-get spec k))
1122 (eq t (plist-get spec k)))
1124 (list k (plist-get spec k))))
1126 ;; needed keys (always including host, login, port, and secret)
1127 (returned-keys (mm-delete-duplicates (append
1128 '(:host :login :port :secret)
1130 (items (loop for item in (apply 'secrets-search-items coll search-spec)
1131 unless (and (stringp label)
1132 (not (string-match label item)))
1134 ;; TODO: respect max in `secrets-search-items', not after the fact
1135 (items (butlast items (- (length items) max)))
1136 ;; convert the item name to a full plist
1137 (items (mapcar (lambda (item)
1139 ;; make an entry for the secret (password) element
1142 (lexical-let ((v (secrets-get-secret coll item)))
1144 ;; rewrite the entry from ((k1 v1) (k2 v2)) to plist
1146 (mapcar (lambda (entry)
1147 (list (car entry) (cdr entry)))
1148 (secrets-get-attributes coll item)))))
1150 ;; ensure each item has each key in `returned-keys'
1151 (items (mapcar (lambda (plist)
1154 (mapcar (lambda (req)
1155 (if (plist-get plist req)
1163 (defun* auth-source-secrets-create (&rest
1165 &key backend type max host user port
1168 ;; (apply 'secrets-create-item (auth-get-source entry) name passwd spec)
1173 ;;; (auth-source-user-or-password '("login" "password") "imap.myhost.com" t "tzz")
1175 ;; deprecate the old interface
1176 (make-obsolete 'auth-source-user-or-password
1177 'auth-source-search "Emacs 24.1")
1178 (make-obsolete 'auth-source-forget-user-or-password
1179 'auth-source-forget "Emacs 24.1")
1181 (defun auth-source-user-or-password
1182 (mode host port &optional username create-missing delete-existing)
1183 "Find MODE (string or list of strings) matching HOST and PORT.
1185 DEPRECATED in favor of `auth-source-search'!
1187 USERNAME is optional and will be used as \"login\" in a search
1188 across the Secret Service API (see secrets.el) if the resulting
1189 items don't have a username. This means that if you search for
1190 username \"joe\" and it matches an item but the item doesn't have
1191 a :user attribute, the username \"joe\" will be returned.
1193 A non nil DELETE-EXISTING means deleting any matching password
1194 entry in the respective sources. This is useful only when
1195 CREATE-MISSING is non nil as well; the intended use case is to
1196 remove wrong password entries.
1198 If no matching entry is found, and CREATE-MISSING is non nil,
1199 the password will be retrieved interactively, and it will be
1200 stored in the password database which matches best (see
1203 MODE can be \"login\" or \"password\"."
1204 (auth-source-do-debug
1205 "auth-source-user-or-password: DEPRECATED get %s for %s (%s) + user=%s"
1206 mode host port username)
1208 (let* ((listy (listp mode))
1209 (mode (if listy mode (list mode)))
1211 (format "%s %s:%s %s" mode host port username)
1212 (format "%s %s:%s" mode host port)))
1213 (search (list :host host :port port))
1214 (search (if username (append search (list :user username)) search))
1215 (search (if create-missing
1216 (append search (list :create t))
1218 (search (if delete-existing
1219 (append search (list :delete t))
1221 ;; (found (if (not delete-existing)
1222 ;; (gethash cname auth-source-cache)
1223 ;; (remhash cname auth-source-cache)
1228 (auth-source-do-debug
1229 "auth-source-user-or-password: DEPRECATED cached %s=%s for %s (%s) + %s"
1231 ;; don't show the password
1232 (if (and (member "password" mode) t)
1236 found) ; return the found data
1237 ;; else, if not found, search with a max of 1
1238 (let ((choice (nth 0 (apply 'auth-source-search
1239 (append '(:max 1) search)))))
1243 ((equal "password" m)
1244 (push (if (plist-get choice :secret)
1245 (funcall (plist-get choice :secret))
1248 (push (plist-get choice :user) found)))))
1249 (setq found (nreverse found))
1250 (setq found (if listy found (car-safe found)))))
1254 (provide 'auth-source)
1256 ;;; auth-source.el ends here