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.")
107 (protocol :initarg :protocol
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 t
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")
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\".
188 See the auth.info manual for details.
190 Each entry is the authentication type with optional properties.
192 It's best to customize this with `M-x customize-variable' because the choices
193 can get pretty complex."
195 :version "24.1" ;; No Gnus
196 :type `(repeat :tag "Authentication Sources"
198 (string :tag "Just a file")
199 (const :tag "Default Secrets API Collection" 'default)
200 (const :tag "Login Secrets API Collection" "secrets:Login")
201 (const :tag "Temp Secrets API Collection" "secrets:session")
202 (list :tag "Source definition"
203 (const :format "" :value :source)
204 (choice :tag "Authentication backend choice"
205 (string :tag "Authentication Source (file)")
207 :tag "Secret Service API/KWallet/GNOME Keyring"
208 (const :format "" :value :secrets)
209 (choice :tag "Collection to use"
210 (string :tag "Collection name")
211 (const :tag "Default" 'default)
212 (const :tag "Login" "Login")
214 :tag "Temporary" "session"))))
215 (repeat :tag "Extra Parameters" :inline t
216 (choice :tag "Extra parameter"
219 (const :format "" :value :host)
220 (choice :tag "Host (machine) choice"
223 :tag "Regular expression")))
226 (const :format "" :value :protocol)
230 ,@auth-source-protocols-customize))
231 (list :tag "User" :inline t
232 (const :format "" :value :user)
233 (choice :tag "Personality/Username"
235 (string :tag "Name")))))))))
237 (defcustom auth-source-gpg-encrypt-to t
238 "List of recipient keys that `authinfo.gpg' encrypted to.
239 If the value is not a list, symmetric encryption will be used."
241 :version "24.1" ;; No Gnus
242 :type '(choice (const :tag "Symmetric encryption" t)
243 (repeat :tag "Recipient public keys"
244 (string :tag "Recipient public key"))))
246 ;; temp for debugging
247 ;; (unintern 'auth-source-protocols)
248 ;; (unintern 'auth-sources)
249 ;; (customize-variable 'auth-sources)
250 ;; (setq auth-sources nil)
251 ;; (format "%S" auth-sources)
252 ;; (customize-variable 'auth-source-protocols)
253 ;; (setq auth-source-protocols nil)
254 ;; (format "%S" auth-source-protocols)
255 ;; (auth-source-pick nil :host "a" :port 'imap)
256 ;; (auth-source-user-or-password "login" "imap.myhost.com" 'imap)
257 ;; (auth-source-user-or-password "password" "imap.myhost.com" 'imap)
258 ;; (auth-source-user-or-password-imap "login" "imap.myhost.com")
259 ;; (auth-source-user-or-password-imap "password" "imap.myhost.com")
260 ;; (auth-source-protocol-defaults 'imap)
262 ;; (let ((auth-source-debug 'debug)) (auth-source-do-debug "hello"))
263 ;; (let ((auth-source-debug t)) (auth-source-do-debug "hello"))
264 ;; (let ((auth-source-debug nil)) (auth-source-do-debug "hello"))
265 (defun auth-source-do-debug (&rest msg)
266 (when auth-source-debug
267 (apply 'auth-source-do-warn msg)))
269 (defun auth-source-do-warn (&rest msg)
271 ;; set logger to either the function in auth-source-debug or 'message
272 ;; note that it will be 'message if auth-source-debug is nil
273 (if (functionp auth-source-debug)
279 ;; (auth-source-pick nil :host "any" :protocol 'imap :user "joe")
280 ;; (auth-source-pick t :host "any" :protocol 'imap :user "joe")
281 ;; (setq auth-sources '((:source (:secrets default) :host t :protocol t :user "joe")
282 ;; (:source (:secrets "session") :host t :protocol t :user "joe")
283 ;; (:source (:secrets "Login") :host t :protocol t)
284 ;; (:source "~/.authinfo.gpg" :host t :protocol t)))
286 ;; (setq auth-sources '((:source (:secrets default) :host t :protocol t :user "joe")
287 ;; (:source (:secrets "session") :host t :protocol t :user "joe")
288 ;; (:source (:secrets "Login") :host t :protocol t)
291 ;; (setq auth-sources '((:source "~/.authinfo.gpg" :host t :protocol t)))
293 ;; (auth-source-backend-parse "myfile.gpg")
294 ;; (auth-source-backend-parse 'default)
295 ;; (auth-source-backend-parse "secrets:Login")
297 (defun auth-source-backend-parse (entry)
298 "Creates an auth-source-backend from an ENTRY in `auth-sources'."
299 (auth-source-backend-parse-parameters
302 ;; take 'default and recurse to get it as a Secrets API default collection
303 ;; matching any user, host, and protocol
305 (auth-source-backend-parse '(:source (:secrets default))))
306 ;; take secrets:XYZ and recurse to get it as Secrets API collection "XYZ"
307 ;; matching any user, host, and protocol
308 ((and (stringp entry) (string-match "^secrets:\\(.+\\)" entry))
309 (auth-source-backend-parse `(:source (:secrets ,(match-string 1 entry)))))
310 ;; take just a file name and recurse to get it as a netrc file
311 ;; matching any user, host, and protocol
313 (auth-source-backend-parse `(:source ,entry)))
315 ;; a file name with parameters
316 ((stringp (plist-get entry :source))
318 (plist-get entry :source)
319 :source (plist-get entry :source)
321 :search-function 'auth-source-netrc-search
322 :create-function 'auth-source-netrc-create))
324 ;; the Secrets API. We require the package, in order to have a
325 ;; defined value for `secrets-enabled'.
327 (not (null (plist-get entry :source))) ; the source must not be nil
328 (listp (plist-get entry :source)) ; and it must be a list
329 (require 'secrets nil t) ; and we must load the Secrets API
330 secrets-enabled) ; and that API must be enabled
332 ;; the source is either the :secrets key in ENTRY or
333 ;; if that's missing or nil, it's "session"
334 (let ((source (or (plist-get (plist-get entry :source) :secrets)
337 ;; if the source is a symbol, we look for the alias named so,
338 ;; and if that alias is missing, we use "Login"
339 (when (symbolp source)
340 (setq source (or (secrets-get-alias (symbol-name source))
343 (if (featurep 'secrets)
345 (format "Secrets API (%s)" source)
348 :search-function 'auth-source-secrets-search
349 :create-function 'auth-source-secrets-create)
351 "auth-source-backend-parse: no Secrets API, ignoring spec: %S" entry)
353 (format "Ignored Secrets API (%s)" source)
360 "auth-source-backend-parse: invalid backend spec: %S" entry)
366 (defun auth-source-backend-parse-parameters (entry backend)
367 "Fills in the extra auth-source-backend parameters of ENTRY.
368 Using the plist ENTRY, get the :host, :protocol, and :user search
369 parameters. Accepts :port as an alias to :protocol."
370 (let ((entry (if (stringp entry)
374 (when (setq val (plist-get entry :host))
375 (oset backend host val))
376 (when (setq val (plist-get entry :user))
377 (oset backend user val))
378 ;; accept :port as an alias for :protocol
379 (when (setq val (or (plist-get entry :protocol) (plist-get entry :port)))
380 (oset backend protocol val)))
383 ;; (mapcar 'auth-source-backend-parse auth-sources)
385 (defun* auth-source-search (&rest spec
386 &key type max host user protocol 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, :protocol, 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 protocol. The host will be
430 'mine'. We prompt for the user with default 'defaultUser' and
431 for the protocol 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 protocol. The host will be
459 'nonesuch' and Q will be 'qqqq'. We prompt for A with default
460 'default A', for B and protocol 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, protocol, 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 first one is used for creation. So :host (X Y Z) would create a
468 token for host X, for instance.
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 :protocol (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 :protocol :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)
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 (dolist (backend filtered-backends)
544 (setq found-here (apply
545 (slot-value backend 'search-function)
551 ;; if max is 0, as soon as we find something, return it
552 (when (and (zerop max) (> 0 (length found-here)))
555 ;; decrement the goal by the number of new results
556 (decf goal (length found-here))
557 ;; and append the new results to the full list
558 (setq found (append found found-here))
560 (auth-source-do-debug
561 "auth-source-search: found %d results (max %d/%d) in %S matching %S"
562 (length found-here) max goal backend spec)
564 ;; return full list if the goal is 0 or negative
565 (when (zerop (max 0 goal))
568 ;; change the :max parameter in the spec to the goal
569 (setq spec (plist-put spec :max goal)))
571 (when (and found auth-source-do-cache)
572 (auth-source-remember spec found)))
576 ;;; (auth-source-search :max 1)
577 ;;; (funcall (plist-get (nth 0 (auth-source-search :max 1)) :secret))
578 ;;; (auth-source-search :host "nonesuch" :type 'netrc :K 1)
579 ;;; (auth-source-search :host "nonesuch" :type 'secrets)
581 (defun* auth-source-delete (&rest spec
584 "Delete entries from the authentication backends according to SPEC.
585 Calls `auth-source-search' with the :delete property in SPEC set to t.
586 The backend may not actually delete the entries.
588 Returns the deleted entries."
589 (auth-source-search (plist-put spec :delete t)))
591 (defun auth-source-search-collection (collection value)
592 "Returns t is VALUE is t or COLLECTION is t or contains VALUE."
593 (when (and (atom collection) (not (eq t collection)))
594 (setq collection (list collection)))
596 ;; (debug :collection collection :value value)
597 (or (eq collection t)
599 (equal collection value)
600 (member value collection)))
602 (defun auth-source-forget-all-cached ()
603 "Forget all cached auth-source data."
605 (loop for sym being the symbols of password-data
606 ;; when the symbol name starts with auth-source-magic
607 when (string-match (concat "^" auth-source-magic)
610 do (password-cache-remove (symbol-name sym))))
612 (defun auth-source-remember (spec found)
613 "Remember FOUND search results for SPEC."
614 (let ((password-cache-expiry auth-source-cache-expiry))
616 (concat auth-source-magic (format "%S" spec)) found)))
618 (defun auth-source-recall (spec)
619 "Recall FOUND search results for SPEC."
620 (password-read-from-cache
621 (concat auth-source-magic (format "%S" spec))))
623 (defun auth-source-forget (spec)
624 "Forget any cached data matching SPEC exactly.
626 This is the same SPEC you passed to `auth-source-search'.
627 Returns t or nil for forgotten or not found."
628 (password-cache-remove (concat auth-source-magic (format "%S" spec))))
630 ;;; (loop for sym being the symbols of password-data when (string-match (concat "^" auth-source-magic) (symbol-name sym)) collect (symbol-name sym))
632 ;;; (auth-source-remember '(:host "wedd") '(4 5 6))
633 ;;; (auth-source-remember '(:host "xedd") '(1 2 3))
634 ;;; (auth-source-recall '(:host "xedd"))
635 ;;; (auth-source-recall '(:host t))
636 ;;; (auth-source-forget+ :host t)
638 (defun* auth-source-forget+ (&rest spec &allow-other-keys)
639 "Forget any cached data matching SPEC. Returns forgotten count.
641 This is not a full `auth-source-search' spec but works similarly.
642 For instance, \(:host \"myhost\" \"yourhost\") would find all the
643 cached data that was found with a search for those two hosts,
644 while \(:host t) would find all host entries."
647 (loop for sym being the symbols of password-data
648 ;; when the symbol name matches with auth-source-magic
649 when (and (setq sname (symbol-name sym))
650 (string-match (concat "^" auth-source-magic "\\(.+\\)")
652 ;; and the spec matches what was stored in the cache
653 (auth-source-specmatchp spec (read (match-string 1 sname))))
656 (password-cache-remove sname)
660 (defun auth-source-specmatchp (spec stored)
661 (let ((keys (loop for i below (length spec) by 2
662 collect (nth i spec))))
665 (unless (auth-source-search-collection (plist-get stored key)
666 (plist-get spec key))
670 ;;; Backend specific parsing: netrc/authinfo backend
672 ;;; (auth-source-netrc-parse "~/.authinfo.gpg")
673 (defun* auth-source-netrc-parse (&rest
675 &key file max host user protocol delete
677 "Parse FILE and return a list of all entries in the file.
678 Note that the MAX parameter is used so we can exit the parse early."
680 ;; We got already parsed contents; just return it.
682 (when (file-exists-p file)
684 (let ((tokens '("machine" "host" "default" "login" "user"
685 "password" "account" "macdef" "force"
687 (max (or max 5000)) ; sanity check: default to stop at 5K
689 alist elem result pair)
690 (insert-file-contents file)
691 (goto-char (point-min))
692 ;; Go through the file, line by line.
693 (while (and (not (eobp))
696 (narrow-to-region (point) (point-at-eol))
697 ;; For each line, get the tokens and values.
699 (skip-chars-forward "\t ")
700 ;; Skip lines that begin with a "#".
701 (if (eq (char-after) ?#)
702 (goto-char (point-max))
705 (if (= (following-char) ?\")
706 (read (current-buffer))
708 (point) (progn (skip-chars-forward "^\t ")
711 ((equal elem "macdef")
712 ;; We skip past the macro definition.
714 (while (and (zerop (forward-line 1))
716 (narrow-to-region (point) (point)))
717 ((member elem tokens)
718 ;; Tokens that don't have a following value are ignored,
720 (when (and pair (or (cdr pair)
721 (equal (car pair) "default")))
723 (setq pair (list elem)))
725 ;; Values that haven't got a preceding token are ignored.
729 (setq pair nil)))))))
733 (auth-source-search-collection
736 (aget alist "machine")
737 (aget alist "host")))
738 (auth-source-search-collection
742 (aget alist "account")
743 (aget alist "user")))
744 (auth-source-search-collection
748 (aget alist "protocol"))))
750 (push (nreverse alist) result)
751 ;; to delete a line, we just comment it out
753 (goto-char (point-min))
762 (when auth-source-gpg-encrypt-to
763 ;; (see bug#7487) making `epa-file-encrypt-to' local to
764 ;; this buffer lets epa-file skip the key selection query
765 ;; (see the `local-variable-p' check in
766 ;; `epa-file-write-region').
767 (unless (local-variable-p 'epa-file-encrypt-to (current-buffer))
768 (make-local-variable 'epa-file-encrypt-to))
769 (if (listp auth-source-gpg-encrypt-to)
770 (setq epa-file-encrypt-to auth-source-gpg-encrypt-to)))
772 ;; ask AFTER we've successfully opened the file
773 (when (y-or-n-p (format "Save file %s? (%d modifications)"
775 (write-region (point-min) (point-max) file nil 'silent)
776 (auth-source-do-debug
777 "auth-source-netrc-parse: modified %d lines in %s"
780 (nreverse result))))))
782 (defun auth-source-netrc-normalize (alist)
783 (mapcar (lambda (entry)
785 (while (setq item (pop entry))
790 (setq k (cond ((member k '("machine")) "host")
791 ((member k '("login" "account")) "user")
792 ((member k '("protocol")) "port")
793 ((member k '("password")) "secret")
796 ;; send back the secret in a function (lexical binding)
797 (when (equal k "secret")
798 (setq v (lexical-let ((v v))
801 (setq ret (plist-put ret
802 (intern (concat ":" k))
808 ;;; (setq secret (plist-get (nth 0 (auth-source-search :host t :type 'netrc :K 1 :max 1)) :secret))
811 (defun* auth-source-netrc-search (&rest
813 &key backend create delete
814 type max host user protocol
816 "Given a property list SPEC, return search matches from the :backend.
817 See `auth-source-search' for details on SPEC."
818 ;; just in case, check that the type is correct (null or same as the backend)
819 (assert (or (null type) (eq type (oref backend type)))
820 t "Invalid netrc search: %s %s")
822 (let ((results (auth-source-netrc-normalize
823 (auth-source-netrc-parse
826 :file (oref backend source)
829 :protocol (or protocol t)))))
831 ;; if we need to create an entry AND none were found to match
833 (= 0 (length results)))
835 ;; create based on the spec and record the value
837 ;; if the user did not want to create the entry
838 ;; in the file, it will be returned
839 (apply (slot-value backend 'create-function) spec)
840 ;; if not, we do the search again without :create
841 ;; to get the updated data.
843 ;; the result will be returned, even if the search fails
844 (apply 'auth-source-netrc-search
845 (plist-put spec :create nil)))))
848 ;;; (auth-source-search :host "nonesuch" :type 'netrc :max 1 :create t)
849 ;;; (auth-source-search :host "nonesuch" :type 'netrc :max 1 :create t :create-extra-keys '((A "default A") (B)))
851 (defun* auth-source-netrc-create (&rest spec
853 secret host user protocol create
855 (let* ((base-required '(host user protocol secret))
856 ;; we know (because of an assertion in auth-source-search) that the
857 ;; :create parameter is either t or a list (which includes nil)
858 (create-extra (if (eq t create) nil create))
859 (required (append base-required create-extra))
860 (file (oref backend source))
862 ;; `valist' is an alist
864 ;; `artificial' will be returned if no creation is needed
867 ;; only for base required elements (defined as function parameters):
868 ;; fill in the valist with whatever data we may have from the search
869 ;; we take the first value if it's a list, the whole value otherwise
870 (dolist (br base-required)
871 (when (symbol-value br)
872 (aput 'valist br (if (listp (symbol-value br))
873 (nth 0 (symbol-value br))
874 (symbol-value br)))))
876 ;; for extra required elements, see if the spec includes a value for them
877 (dolist (er create-extra)
878 (let ((name (concat ":" (symbol-name er)))
879 (keys (loop for i below (length spec) by 2
880 collect (nth i spec))))
882 (when (equal (symbol-name k) name)
883 (aput 'valist er (plist-get spec k))))))
885 ;; for each required element
887 (let* ((data (aget valist r))
888 (given-default (aget auth-source-creation-defaults r))
889 ;; the defaults are simple
891 ((and (not given-default) (eq r 'user))
893 ;; note we need this empty string
894 ((and (not given-default) (eq r 'protocol))
897 ;; the prompt's default string depends on the data so far
898 (default-string (if (and default (< 0 (length default)))
899 (format " (default %s)" default)
901 ;; the prompt should also show what's entered so far
902 (user-value (aget valist 'user))
903 (host-value (aget valist 'host))
904 (protocol-value (aget valist 'protocol))
905 (info-so-far (concat (if user-value
906 (format "%s@" user-value)
909 (format "%s" host-value)
912 ;; this distinguishes protocol between
913 (if (zerop (length protocol-value))
914 "" ; 'entered as "no default"' vs.
915 (format ":%s" protocol-value)) ; given
916 ;; and this is when the protocol is unknown
919 ;; now prompt if the search SPEC did not include a required key;
920 ;; take the result and put it in `data' AND store it in `valist'
924 ((and (null data) (eq r 'secret))
925 ;; special case prompt for passwords
926 (read-passwd (format "Password for %s: " info-so-far)))
929 (format "Enter %s for %s%s: "
930 r info-so-far default-string)
935 (setq artificial (plist-put artificial
936 (intern (concat ":" (symbol-name r)))
938 (lexical-let ((data data))
942 ;; when r is not an empty string...
943 (when (and (stringp data)
945 ;; append the key (the symbol name of r) and the value in r
946 (setq add (concat add
949 (if (zerop (length add)) "" " ")
950 ;; remap auth-source tokens to netrc
957 ;; the value will be printed in %S format
961 (when (file-exists-p file)
962 (insert-file-contents file))
963 (when auth-source-gpg-encrypt-to
964 ;; (see bug#7487) making `epa-file-encrypt-to' local to
965 ;; this buffer lets epa-file skip the key selection query
966 ;; (see the `local-variable-p' check in
967 ;; `epa-file-write-region').
968 (unless (local-variable-p 'epa-file-encrypt-to (current-buffer))
969 (make-local-variable 'epa-file-encrypt-to))
970 (if (listp auth-source-gpg-encrypt-to)
971 (setq epa-file-encrypt-to auth-source-gpg-encrypt-to)))
972 (goto-char (point-max))
974 ;; ask AFTER we've successfully opened the file
975 (if (y-or-n-p (format "Add to file %s: line [%s]" file add))
980 (write-region (point-min) (point-max) file nil 'silent)
981 (auth-source-do-debug
982 "auth-source-netrc-create: wrote 1 new line to %s"
985 (list artificial)))))
987 ;;; Backend specific parsing: Secrets API backend
989 ;;; (let ((auth-sources '(default))) (auth-source-search :max 1 :create t))
990 ;;; (let ((auth-sources '(default))) (auth-source-search :max 1 :delete t))
991 ;;; (let ((auth-sources '(default))) (auth-source-search :max 1))
992 ;;; (let ((auth-sources '(default))) (auth-source-search))
993 ;;; (let ((auth-sources '("secrets:Login"))) (auth-source-search :max 1))
994 ;;; (let ((auth-sources '("secrets:Login"))) (auth-source-search :max 1 :signon_realm "https://git.gnus.org/Git"))
996 (defun* auth-source-secrets-search (&rest
998 &key backend create delete label
999 type max host user protocol
1001 "Search the Secrets API; spec is like `auth-source'.
1003 The :label key specifies the item's label. It is the only key
1004 that can specify a substring. Any :label value besides a string
1005 will allow any label.
1007 All other search keys must match exactly. If you need substring
1008 matching, do a wider search and narrow it down yourself.
1010 You'll get back all the properties of the token as a plist.
1012 Here's an example that looks for the first item in the 'Login'
1015 \(let ((auth-sources '(\"secrets:Login\")))
1016 (auth-source-search :max 1)
1018 Here's another that looks for the first item in the 'Login'
1019 Secrets collection whose label contains 'gnus':
1021 \(let ((auth-sources '(\"secrets:Login\")))
1022 (auth-source-search :max 1 :label \"gnus\")
1024 And this one looks for the first item in the 'Login' Secrets
1025 collection that's a Google Chrome entry for the git.gnus.org site
1026 authentication tokens:
1028 \(let ((auth-sources '(\"secrets:Login\")))
1029 (auth-source-search :max 1 :signon_realm \"https://git.gnus.org/Git\"))
1033 (assert (not create) nil
1034 "The Secrets API auth-source backend doesn't support creation yet")
1036 ;; (secrets-delete-item coll elt)
1037 (assert (not delete) nil
1038 "The Secrets API auth-source backend doesn't support deletion yet")
1040 (let* ((coll (oref backend source))
1041 (max (or max 5000)) ; sanity check: default to stop at 5K
1042 (ignored-keys '(:create :delete :max :backend :label))
1043 (search-keys (loop for i below (length spec) by 2
1044 unless (memq (nth i spec) ignored-keys)
1045 collect (nth i spec)))
1046 ;; build a search spec without the ignored keys
1047 ;; if a search key is nil or t (match anything), we skip it
1048 (search-spec (apply 'append (mapcar
1050 (if (or (null (plist-get spec k))
1051 (eq t (plist-get spec k)))
1053 (list k (plist-get spec k))))
1055 ;; needed keys (always including host, login, protocol, and secret)
1056 (returned-keys (mm-delete-duplicates (append
1057 '(:host :login :protocol :secret)
1059 (items (loop for item in (apply 'secrets-search-items coll search-spec)
1060 unless (and (stringp label)
1061 (not (string-match label item)))
1063 ;; TODO: respect max in `secrets-search-items', not after the fact
1064 (items (butlast items (- (length items) max)))
1065 ;; convert the item name to a full plist
1066 (items (mapcar (lambda (item)
1068 ;; make an entry for the secret (password) element
1071 (lexical-let ((v (secrets-get-secret coll item)))
1073 ;; rewrite the entry from ((k1 v1) (k2 v2)) to plist
1075 (mapcar (lambda (entry)
1076 (list (car entry) (cdr entry)))
1077 (secrets-get-attributes coll item)))))
1079 ;; ensure each item has each key in `returned-keys'
1080 (items (mapcar (lambda (plist)
1083 (mapcar (lambda (req)
1084 (if (plist-get plist req)
1092 (defun* auth-source-secrets-create (&rest
1094 &key backend type max host user protocol
1097 ;; (apply 'secrets-create-item (auth-get-source entry) name passwd spec)
1102 ;;; (auth-source-user-or-password '("login" "password") "imap.myhost.com" t "tzz")
1104 ;; deprecate the old interface
1105 (make-obsolete 'auth-source-user-or-password
1106 'auth-source-search "Emacs 24.1")
1107 (make-obsolete 'auth-source-forget-user-or-password
1108 'auth-source-forget "Emacs 24.1")
1110 (defun auth-source-user-or-password
1111 (mode host protocol &optional username create-missing delete-existing)
1112 "Find MODE (string or list of strings) matching HOST and PROTOCOL.
1114 DEPRECATED in favor of `auth-source-search'!
1116 USERNAME is optional and will be used as \"login\" in a search
1117 across the Secret Service API (see secrets.el) if the resulting
1118 items don't have a username. This means that if you search for
1119 username \"joe\" and it matches an item but the item doesn't have
1120 a :user attribute, the username \"joe\" will be returned.
1122 A non nil DELETE-EXISTING means deleting any matching password
1123 entry in the respective sources. This is useful only when
1124 CREATE-MISSING is non nil as well; the intended use case is to
1125 remove wrong password entries.
1127 If no matching entry is found, and CREATE-MISSING is non nil,
1128 the password will be retrieved interactively, and it will be
1129 stored in the password database which matches best (see
1132 MODE can be \"login\" or \"password\"."
1133 (auth-source-do-debug
1134 "auth-source-user-or-password: DEPRECATED get %s for %s (%s) + user=%s"
1135 mode host protocol username)
1137 (let* ((listy (listp mode))
1138 (mode (if listy mode (list mode)))
1140 (format "%s %s:%s %s" mode host protocol username)
1141 (format "%s %s:%s" mode host protocol)))
1142 (search (list :host host :protocol protocol))
1143 (search (if username (append search (list :user username)) search))
1144 (search (if create-missing
1145 (append search (list :create t))
1147 (search (if delete-existing
1148 (append search (list :delete t))
1150 ;; (found (if (not delete-existing)
1151 ;; (gethash cname auth-source-cache)
1152 ;; (remhash cname auth-source-cache)
1157 (auth-source-do-debug
1158 "auth-source-user-or-password: DEPRECATED cached %s=%s for %s (%s) + %s"
1160 ;; don't show the password
1161 (if (and (member "password" mode) t)
1164 host protocol username)
1165 found) ; return the found data
1166 ;; else, if not found, search with a max of 1
1167 (let ((choice (nth 0 (apply 'auth-source-search
1168 (append '(:max 1) search)))))
1172 ((equal "password" m)
1173 (push (if (plist-get choice :secret)
1174 (funcall (plist-get choice :secret))
1177 (push (plist-get choice :user) found)))))
1178 (setq found (nreverse found))
1179 (setq found (if listy found (car-safe found)))))
1183 (provide 'auth-source)
1185 ;;; auth-source.el ends here