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)
46 (eval-when-compile (require 'cl))
48 (or (require 'eieio nil t)
49 ;; gnus-fallback-lib/ from gnus/lisp/gnus-fallback-lib
50 (let ((load-path (cons (expand-file-name
51 "gnus-fallback-lib/eieio"
52 (file-name-directory (locate-library "gnus")))
54 (require 'eieio nil t))
56 "eieio not found in `load-path' or gnus-fallback-lib/ directory.")))
58 (autoload 'secrets-create-item "secrets")
59 (autoload 'secrets-delete-item "secrets")
60 (autoload 'secrets-get-alias "secrets")
61 (autoload 'secrets-get-attributes "secrets")
62 (autoload 'secrets-get-secret "secrets")
63 (autoload 'secrets-list-collections "secrets")
64 (autoload 'secrets-search-items "secrets")
66 (defvar secrets-enabled)
68 (defgroup auth-source nil
69 "Authentication sources."
70 :version "23.1" ;; No Gnus
74 (defcustom auth-source-cache-expiry 7200
75 "How many seconds passwords are cached, or nil to disable
76 expiring. Overrides `password-cache-expiry' through a
79 :type '(choice (const :tag "Never" nil)
80 (const :tag "All Day" 86400)
81 (const :tag "2 Hours" 7200)
82 (const :tag "30 Minutes" 1800)
83 (integer :tag "Seconds")))
85 (defclass auth-source-backend ()
90 :documentation "The backend type.")
91 (source :initarg :source
94 :documentation "The backend source.")
99 :documentation "The backend host.")
104 :documentation "The backend user.")
105 (protocol :initarg :protocol
109 :documentation "The backend protocol.")
110 (create-function :initarg :create-function
114 :documentation "The create function.")
115 (search-function :initarg :search-function
119 :documentation "The search function.")))
121 (defcustom auth-source-protocols '((imap "imap" "imaps" "143" "993")
122 (pop3 "pop3" "pop" "pop3s" "110" "995")
126 "List of authentication protocols and their names"
129 :version "23.2" ;; No Gnus
130 :type '(repeat :tag "Authentication Protocols"
131 (cons :tag "Protocol Entry"
132 (symbol :tag "Protocol")
134 (string :tag "Name")))))
136 ;;; generate all the protocols in a format Customize can use
137 ;;; TODO: generate on the fly from auth-source-protocols
138 (defconst auth-source-protocols-customize
140 (let ((p (car-safe a)))
142 :tag (upcase (symbol-name p))
144 auth-source-protocols))
146 (defvar auth-source-creation-defaults nil
147 "Defaults for creating token values. Usually let-bound.")
149 (make-obsolete 'auth-source-hide-passwords nil "Emacs 24.1")
151 (defvar auth-source-magic "auth-source-magic ")
153 (defcustom auth-source-do-cache t
154 "Whether auth-source should cache information with `password-cache'."
156 :version "23.2" ;; No Gnus
159 (defcustom auth-source-debug t
160 "Whether auth-source should log debug messages.
162 If the value is nil, debug messages are not logged.
164 If the value is t, debug messages are logged with `message'. In
165 that case, your authentication data will be in the clear (except
168 If the value is a function, debug messages are logged by calling
169 that function using the same arguments as `message'."
171 :version "23.2" ;; No Gnus
173 :tag "auth-source debugging mode"
174 (const :tag "Log using `message' to the *Messages* buffer" t)
175 (function :tag "Function that takes arguments like `message'")
176 (const :tag "Don't log anything" nil)))
178 (defcustom auth-sources '("~/.authinfo.gpg" "~/.authinfo")
179 "List of authentication sources.
181 The default will get login and password information from
182 \"~/.authinfo.gpg\", which you should set up with the EPA/EPG
183 packages to be encrypted. If that file doesn't exist, it will
184 try the unencrypted version \"~/.authinfo\".
186 See the auth.info manual for details.
188 Each entry is the authentication type with optional properties.
190 It's best to customize this with `M-x customize-variable' because the choices
191 can get pretty complex."
193 :version "24.1" ;; No Gnus
194 :type `(repeat :tag "Authentication Sources"
196 (string :tag "Just a file")
197 (const :tag "Default Secrets API Collection" 'default)
198 (const :tag "Login Secrets API Collection" "secrets:Login")
199 (const :tag "Temp Secrets API Collection" "secrets:session")
200 (list :tag "Source definition"
201 (const :format "" :value :source)
202 (choice :tag "Authentication backend choice"
203 (string :tag "Authentication Source (file)")
205 :tag "Secret Service API/KWallet/GNOME Keyring"
206 (const :format "" :value :secrets)
207 (choice :tag "Collection to use"
208 (string :tag "Collection name")
209 (const :tag "Default" 'default)
210 (const :tag "Login" "Login")
212 :tag "Temporary" "session"))))
213 (repeat :tag "Extra Parameters" :inline t
214 (choice :tag "Extra parameter"
217 (const :format "" :value :host)
218 (choice :tag "Host (machine) choice"
221 :tag "Regular expression")))
224 (const :format "" :value :protocol)
228 ,@auth-source-protocols-customize))
229 (list :tag "User" :inline t
230 (const :format "" :value :user)
231 (choice :tag "Personality/Username"
233 (string :tag "Name")))))))))
235 (defcustom auth-source-gpg-encrypt-to t
236 "List of recipient keys that `authinfo.gpg' encrypted to.
237 If the value is not a list, symmetric encryption will be used."
239 :version "24.1" ;; No Gnus
240 :type '(choice (const :tag "Symmetric encryption" t)
241 (repeat :tag "Recipient public keys"
242 (string :tag "Recipient public key"))))
244 ;; temp for debugging
245 ;; (unintern 'auth-source-protocols)
246 ;; (unintern 'auth-sources)
247 ;; (customize-variable 'auth-sources)
248 ;; (setq auth-sources nil)
249 ;; (format "%S" auth-sources)
250 ;; (customize-variable 'auth-source-protocols)
251 ;; (setq auth-source-protocols nil)
252 ;; (format "%S" auth-source-protocols)
253 ;; (auth-source-pick nil :host "a" :port 'imap)
254 ;; (auth-source-user-or-password "login" "imap.myhost.com" 'imap)
255 ;; (auth-source-user-or-password "password" "imap.myhost.com" 'imap)
256 ;; (auth-source-user-or-password-imap "login" "imap.myhost.com")
257 ;; (auth-source-user-or-password-imap "password" "imap.myhost.com")
258 ;; (auth-source-protocol-defaults 'imap)
260 ;; (let ((auth-source-debug 'debug)) (auth-source-do-debug "hello"))
261 ;; (let ((auth-source-debug t)) (auth-source-do-debug "hello"))
262 ;; (let ((auth-source-debug nil)) (auth-source-do-debug "hello"))
263 (defun auth-source-do-debug (&rest msg)
264 (when auth-source-debug
265 (apply 'auth-source-do-warn msg)))
267 (defun auth-source-do-warn (&rest msg)
269 ;; set logger to either the function in auth-source-debug or 'message
270 ;; note that it will be 'message if auth-source-debug is nil
271 (if (functionp auth-source-debug)
277 ;; (auth-source-pick nil :host "any" :protocol 'imap :user "joe")
278 ;; (auth-source-pick t :host "any" :protocol 'imap :user "joe")
279 ;; (setq auth-sources '((:source (:secrets default) :host t :protocol t :user "joe")
280 ;; (:source (:secrets "session") :host t :protocol t :user "joe")
281 ;; (:source (:secrets "Login") :host t :protocol t)
282 ;; (:source "~/.authinfo.gpg" :host t :protocol t)))
284 ;; (setq auth-sources '((:source (:secrets default) :host t :protocol t :user "joe")
285 ;; (:source (:secrets "session") :host t :protocol t :user "joe")
286 ;; (:source (:secrets "Login") :host t :protocol t)
289 ;; (setq auth-sources '((:source "~/.authinfo.gpg" :host t :protocol t)))
291 ;; (auth-source-backend-parse "myfile.gpg")
292 ;; (auth-source-backend-parse 'default)
293 ;; (auth-source-backend-parse "secrets:Login")
295 (defun auth-source-backend-parse (entry)
296 "Creates an auth-source-backend from an ENTRY in `auth-sources'."
297 (auth-source-backend-parse-parameters
300 ;; take 'default and recurse to get it as a Secrets API default collection
301 ;; matching any user, host, and protocol
303 (auth-source-backend-parse '(:source (:secrets default))))
304 ;; take secrets:XYZ and recurse to get it as Secrets API collection "XYZ"
305 ;; matching any user, host, and protocol
306 ((and (stringp entry) (string-match "^secrets:\\(.+\\)" entry))
307 (auth-source-backend-parse `(:source (:secrets ,(match-string 1 entry)))))
308 ;; take just a file name and recurse to get it as a netrc file
309 ;; matching any user, host, and protocol
311 (auth-source-backend-parse `(:source ,entry)))
313 ;; a file name with parameters
314 ((stringp (plist-get entry :source))
316 (plist-get entry :source)
317 :source (plist-get entry :source)
319 :search-function 'auth-source-netrc-search
320 :create-function 'auth-source-netrc-create))
322 ;; the Secrets API. We require the package, in order to have a
323 ;; defined value for `secrets-enabled'.
325 (not (null (plist-get entry :source))) ; the source must not be nil
326 (listp (plist-get entry :source)) ; and it must be a list
327 (require 'secrets nil t) ; and we must load the Secrets API
328 secrets-enabled) ; and that API must be enabled
330 ;; the source is either the :secrets key in ENTRY or
331 ;; if that's missing or nil, it's "session"
332 (let ((source (or (plist-get (plist-get entry :source) :secrets)
335 ;; if the source is a symbol, we look for the alias named so,
336 ;; and if that alias is missing, we use "Login"
337 (when (symbolp source)
338 (setq source (or (secrets-get-alias (symbol-name source))
341 (if (featurep 'secrets)
343 (format "Secrets API (%s)" source)
346 :search-function 'auth-source-secrets-search
347 :create-function 'auth-source-secrets-create)
349 "auth-source-backend-parse: no Secrets API, ignoring spec: %S" entry)
351 (format "Ignored Secrets API (%s)" source)
358 "auth-source-backend-parse: invalid backend spec: %S" entry)
364 (defun auth-source-backend-parse-parameters (entry backend)
365 "Fills in the extra auth-source-backend parameters of ENTRY.
366 Using the plist ENTRY, get the :host, :protocol, and :user search
367 parameters. Accepts :port as an alias to :protocol."
368 (let ((entry (if (stringp entry)
372 (when (setq val (plist-get entry :host))
373 (oset backend host val))
374 (when (setq val (plist-get entry :user))
375 (oset backend user val))
376 ;; accept :port as an alias for :protocol
377 (when (setq val (or (plist-get entry :protocol) (plist-get entry :port)))
378 (oset backend protocol val)))
381 ;; (mapcar 'auth-source-backend-parse auth-sources)
383 (defun* auth-source-search (&rest spec
384 &key type max host user protocol secret
387 "Search or modify authentication backends according to SPEC.
389 This function parses `auth-sources' for matches of the SPEC
390 plist. It can optionally create or update an authentication
391 token if requested. A token is just a standard Emacs property
392 list with a :secret property that can be a function; all the
393 other properties will always hold scalar values.
395 Typically the :secret property, if present, contains a password.
397 Common search keys are :max, :host, :protocol, and :user. In
398 addition, :create specifies how tokens will be or created.
399 Finally, :type can specify which backend types you want to check.
401 A string value is always matched literally. A symbol is matched
402 as its string value, literally. All the SPEC values can be
403 single values (symbol or string) or lists thereof (in which case
404 any of the search terms matches).
406 :create t means to create a token if possible.
408 A new token will be created if no matching tokens were found.
409 The new token will have only the keys the backend requires. For
410 the netrc backend, for instance, that's the user, host, and
415 \(let ((auth-source-creation-defaults '((user . \"defaultUser\")
416 (A . \"default A\"))))
417 (auth-source-search :host \"mine\" :type 'netrc :max 1
418 :P \"pppp\" :Q \"qqqq\"
423 \"Search for any entry matching host 'mine' in backends of type
424 'netrc', maximum one result.
426 Create a new entry if you found none. The netrc backend will
427 automatically require host, user, and protocol. The host will be
428 'mine'. We prompt for the user with default 'defaultUser' and
429 for the protocol without a default. We will not prompt for A, Q,
430 or P. The resulting token will only have keys user, host, and
433 :create '(A B C) also means to create a token if possible.
435 The behavior is like :create t but if the list contains any
436 parameter, that parameter will be required in the resulting
437 token. The value for that parameter will be obtained from the
438 search parameters or from user input. If any queries are needed,
439 the alist `auth-source-creation-defaults' will be checked for the
444 \(let ((auth-source-creation-defaults '((user . \"defaultUser\")
445 (A . \"default A\"))))
446 (auth-source-search :host '(\"nonesuch\" \"twosuch\") :type 'netrc :max 1
447 :P \"pppp\" :Q \"qqqq\"
452 \"Search for any entry matching host 'nonesuch'
453 or 'twosuch' in backends of type 'netrc', maximum one result.
455 Create a new entry if you found none. The netrc backend will
456 automatically require host, user, and protocol. The host will be
457 'nonesuch' and Q will be 'qqqq'. We prompt for A with default
458 'default A', for B and protocol with default nil, and for the
459 user with default 'defaultUser'. We will not prompt for Q. The
460 resulting token will have keys user, host, protocol, A, B, and Q.
461 It will not have P with any value, even though P is used in the
462 search to find only entries that have P set to 'pppp'.\"
464 When multiple values are specified in the search parameter, the
465 first one is used for creation. So :host (X Y Z) would create a
466 token for host X, for instance.
468 This creation can fail if the search was not specific enough to
469 create a new token (it's up to the backend to decide that). You
470 should `catch' the backend-specific error as usual. Some
471 backends (netrc, at least) will prompt the user rather than throw
474 :delete t means to delete any found entries. nil by default.
475 Use `auth-source-delete' in ELisp code instead of calling
476 `auth-source-search' directly with this parameter.
478 :type (X Y Z) will check only those backend types. 'netrc and
479 'secrets are the only ones supported right now.
481 :max N means to try to return at most N items (defaults to 1).
482 When 0 the function will return just t or nil to indicate if any
483 matches were found. More than N items may be returned, depending
484 on the search and the backend.
486 :host (X Y Z) means to match only hosts X, Y, or Z according to
487 the match rules above. Defaults to t.
489 :user (X Y Z) means to match only users X, Y, or Z according to
490 the match rules above. Defaults to t.
492 :protocol (P Q R) means to match only protocols P, Q, or R.
495 :K (V1 V2 V3) for any other key K will match values V1, V2, or
496 V3 (note the match rules above).
498 The return value is a list with at most :max tokens. Each token
499 is a plist with keys :backend :host :protocol :user, plus any other
500 keys provided by the backend (notably :secret). But note the
501 exception for :max 0, which see above.
503 The token's :secret key can hold a function. In that case you
504 must call it to obtain the actual value."
505 (let* ((backends (mapcar 'auth-source-backend-parse auth-sources))
507 (ignored-keys '(:create :delete :max))
508 (keys (loop for i below (length spec) by 2
509 unless (memq (nth i spec) ignored-keys)
510 collect (nth i spec)))
511 (found (auth-source-recall spec))
512 filtered-backends accessor-key found-here goal)
514 (if (and found auth-source-do-cache)
515 (auth-source-do-debug
516 "auth-source-search: found %d CACHED results matching %S"
520 (or (eq t create) (listp create)) t
521 "Invalid auth-source :create parameter (must be nil, t, or a list): %s %s")
523 (setq filtered-backends (copy-sequence backends))
524 (dolist (backend backends)
526 ;; ignore invalid slots
527 (condition-case signal
528 (unless (eval `(auth-source-search-collection
530 (oref backend ,key)))
531 (setq filtered-backends (delq backend filtered-backends))
533 (invalid-slot-name))))
535 (auth-source-do-debug
536 "auth-source-search: found %d backends matching %S"
537 (length filtered-backends) spec)
539 ;; (debug spec "filtered" filtered-backends)
541 (dolist (backend filtered-backends)
542 (setq found-here (apply
543 (slot-value backend 'search-function)
549 ;; if max is 0, as soon as we find something, return it
550 (when (and (zerop max) (> 0 (length found-here)))
553 ;; decrement the goal by the number of new results
554 (decf goal (length found-here))
555 ;; and append the new results to the full list
556 (setq found (append found found-here))
558 (auth-source-do-debug
559 "auth-source-search: found %d results (max %d/%d) in %S matching %S"
560 (length found-here) max goal backend spec)
562 ;; return full list if the goal is 0 or negative
563 (when (zerop (max 0 goal))
566 ;; change the :max parameter in the spec to the goal
567 (setq spec (plist-put spec :max goal)))
569 (when (and found auth-source-do-cache)
570 (auth-source-remember spec found)))
574 ;;; (auth-source-search :max 1)
575 ;;; (funcall (plist-get (nth 0 (auth-source-search :max 1)) :secret))
576 ;;; (auth-source-search :host "nonesuch" :type 'netrc :K 1)
577 ;;; (auth-source-search :host "nonesuch" :type 'secrets)
579 (defun* auth-source-delete (&rest spec
582 "Delete entries from the authentication backends according to SPEC.
583 Calls `auth-source-search' with the :delete property in SPEC set to t.
584 The backend may not actually delete the entries.
586 Returns the deleted entries."
587 (auth-source-search (plist-put spec :delete t)))
589 (defun auth-source-search-collection (collection value)
590 "Returns t is VALUE is t or COLLECTION is t or contains VALUE."
591 (when (and (atom collection) (not (eq t collection)))
592 (setq collection (list collection)))
594 ;; (debug :collection collection :value value)
595 (or (eq collection t)
597 (equal collection value)
598 (member value collection)))
600 (defun auth-source-forget-all-cached ()
601 "Forget all cached auth-source data."
603 (loop for sym being the symbols of password-data
604 ;; when the symbol name starts with auth-source-magic
605 when (string-match (concat "^" auth-source-magic)
608 do (password-cache-remove (symbol-name sym))))
610 (defun auth-source-remember (spec found)
611 "Remember FOUND search results for SPEC."
612 (let ((password-cache-expiry auth-source-cache-expiry))
614 (concat auth-source-magic (format "%S" spec)) found)))
616 (defun auth-source-recall (spec)
617 "Recall FOUND search results for SPEC."
618 (password-read-from-cache
619 (concat auth-source-magic (format "%S" spec))))
621 (defun auth-source-forget (spec)
622 "Forget any cached data matching SPEC exactly.
624 This is the same SPEC you passed to `auth-source-search'.
625 Returns t or nil for forgotten or not found."
626 (password-cache-remove (concat auth-source-magic (format "%S" spec))))
628 ;;; (loop for sym being the symbols of password-data when (string-match (concat "^" auth-source-magic) (symbol-name sym)) collect (symbol-name sym))
630 ;;; (auth-source-remember '(:host "wedd") '(4 5 6))
631 ;;; (auth-source-remember '(:host "xedd") '(1 2 3))
632 ;;; (auth-source-recall '(:host "xedd"))
633 ;;; (auth-source-recall '(:host t))
634 ;;; (auth-source-forget+ :host t)
636 (defun* auth-source-forget+ (&rest spec &allow-other-keys)
637 "Forget any cached data matching SPEC. Returns forgotten count.
639 This is not a full `auth-source-search' spec but works similarly.
640 For instance, \(:host \"myhost\" \"yourhost\") would find all the
641 cached data that was found with a search for those two hosts,
642 while \(:host t) would find all host entries."
645 (loop for sym being the symbols of password-data
646 ;; when the symbol name matches with auth-source-magic
647 when (and (setq sname (symbol-name sym))
648 (string-match (concat "^" auth-source-magic "\\(.+\\)")
650 ;; and the spec matches what was stored in the cache
651 (auth-source-specmatchp spec (read (match-string 1 sname))))
654 (password-cache-remove sname)
658 (defun auth-source-specmatchp (spec stored)
659 (let ((keys (loop for i below (length spec) by 2
660 collect (nth i spec))))
663 (unless (auth-source-search-collection (plist-get stored key)
664 (plist-get spec key))
668 ;;; Backend specific parsing: netrc/authinfo backend
670 ;;; (auth-source-netrc-parse "~/.authinfo.gpg")
671 (defun* auth-source-netrc-parse (&rest
673 &key file max host user protocol delete
675 "Parse FILE and return a list of all entries in the file.
676 Note that the MAX parameter is used so we can exit the parse early."
678 ;; We got already parsed contents; just return it.
680 (when (file-exists-p file)
682 (let ((tokens '("machine" "host" "default" "login" "user"
683 "password" "account" "macdef" "force"
685 (max (or max 5000)) ; sanity check: default to stop at 5K
687 alist elem result pair)
688 (insert-file-contents file)
689 (goto-char (point-min))
690 ;; Go through the file, line by line.
691 (while (and (not (eobp))
694 (narrow-to-region (point) (point-at-eol))
695 ;; For each line, get the tokens and values.
697 (skip-chars-forward "\t ")
698 ;; Skip lines that begin with a "#".
699 (if (eq (char-after) ?#)
700 (goto-char (point-max))
703 (if (= (following-char) ?\")
704 (read (current-buffer))
706 (point) (progn (skip-chars-forward "^\t ")
709 ((equal elem "macdef")
710 ;; We skip past the macro definition.
712 (while (and (zerop (forward-line 1))
714 (narrow-to-region (point) (point)))
715 ((member elem tokens)
716 ;; Tokens that don't have a following value are ignored,
718 (when (and pair (or (cdr pair)
719 (equal (car pair) "default")))
721 (setq pair (list elem)))
723 ;; Values that haven't got a preceding token are ignored.
727 (setq pair nil)))))))
731 (auth-source-search-collection
734 (aget alist "machine")
735 (aget alist "host")))
736 (auth-source-search-collection
740 (aget alist "account")
741 (aget alist "user")))
742 (auth-source-search-collection
746 (aget alist "protocol"))))
748 (push (nreverse alist) result)
749 ;; to delete a line, we just comment it out
751 (goto-char (point-min))
760 (when auth-source-gpg-encrypt-to
761 ;; (see bug#7487) making `epa-file-encrypt-to' local to
762 ;; this buffer lets epa-file skip the key selection query
763 ;; (see the `local-variable-p' check in
764 ;; `epa-file-write-region').
765 (unless (local-variable-p 'epa-file-encrypt-to (current-buffer))
766 (make-local-variable 'epa-file-encrypt-to))
767 (if (listp auth-source-gpg-encrypt-to)
768 (setq epa-file-encrypt-to auth-source-gpg-encrypt-to)))
770 ;; ask AFTER we've successfully opened the file
771 (when (y-or-n-p (format "Save file %s? (%d modifications)"
773 (write-region (point-min) (point-max) file nil 'silent)
774 (auth-source-do-debug
775 "auth-source-netrc-parse: modified %d lines in %s"
778 (nreverse result))))))
780 (defun auth-source-netrc-normalize (alist)
781 (mapcar (lambda (entry)
783 (while (setq item (pop entry))
788 (setq k (cond ((member k '("machine")) "host")
789 ((member k '("login" "account")) "user")
790 ((member k '("protocol")) "port")
791 ((member k '("password")) "secret")
794 ;; send back the secret in a function (lexical binding)
795 (when (equal k "secret")
796 (setq v (lexical-let ((v v))
799 (setq ret (plist-put ret
800 (intern (concat ":" k))
806 ;;; (setq secret (plist-get (nth 0 (auth-source-search :host t :type 'netrc :K 1 :max 1)) :secret))
809 (defun* auth-source-netrc-search (&rest
811 &key backend create delete
812 type max host user protocol
814 "Given a property list SPEC, return search matches from the :backend.
815 See `auth-source-search' for details on SPEC."
816 ;; just in case, check that the type is correct (null or same as the backend)
817 (assert (or (null type) (eq type (oref backend type)))
818 t "Invalid netrc search: %s %s")
820 (let ((results (auth-source-netrc-normalize
821 (auth-source-netrc-parse
824 :file (oref backend source)
827 :protocol (or protocol t)))))
829 ;; if we need to create an entry AND none were found to match
831 (= 0 (length results)))
833 ;; create based on the spec and record the value
835 ;; if the user did not want to create the entry
836 ;; in the file, it will be returned
837 (apply (slot-value backend 'create-function) spec)
838 ;; if not, we do the search again without :create
839 ;; to get the updated data.
841 ;; the result will be returned, even if the search fails
842 (apply 'auth-source-netrc-search
843 (plist-put spec :create nil)))))
846 ;;; (auth-source-search :host "nonesuch" :type 'netrc :max 1 :create t)
847 ;;; (auth-source-search :host "nonesuch" :type 'netrc :max 1 :create t :create-extra-keys '((A "default A") (B)))
849 (defun* auth-source-netrc-create (&rest spec
851 secret host user protocol create
853 (let* ((base-required '(host user protocol secret))
854 ;; we know (because of an assertion in auth-source-search) that the
855 ;; :create parameter is either t or a list (which includes nil)
856 (create-extra (if (eq t create) nil create))
857 (required (append base-required create-extra))
858 (file (oref backend source))
860 ;; `valist' is an alist
862 ;; `artificial' will be returned if no creation is needed
865 ;; only for base required elements (defined as function parameters):
866 ;; fill in the valist with whatever data we may have from the search
867 ;; we take the first value if it's a list, the whole value otherwise
868 (dolist (br base-required)
869 (when (symbol-value br)
870 (aput 'valist br (if (listp (symbol-value br))
871 (nth 0 (symbol-value br))
872 (symbol-value br)))))
874 ;; for extra required elements, see if the spec includes a value for them
875 (dolist (er create-extra)
876 (let ((name (concat ":" (symbol-name er)))
877 (keys (loop for i below (length spec) by 2
878 collect (nth i spec))))
880 (when (equal (symbol-name k) name)
881 (aput 'valist er (plist-get spec k))))))
883 ;; for each required element
885 (let* ((data (aget valist r))
886 (given-default (aget auth-source-creation-defaults r))
887 ;; the defaults are simple
889 ((and (not given-default) (eq r 'user))
891 ;; note we need this empty string
892 ((and (not given-default) (eq r 'protocol))
895 ;; the prompt's default string depends on the data so far
896 (default-string (if (and default (< 0 (length default)))
897 (format " (default %s)" default)
899 ;; the prompt should also show what's entered so far
900 (user-value (aget valist 'user))
901 (host-value (aget valist 'host))
902 (protocol-value (aget valist 'protocol))
903 (info-so-far (concat (if user-value
904 (format "%s@" user-value)
907 (format "%s" host-value)
910 ;; this distinguishes protocol between
911 (if (zerop (length protocol-value))
912 "" ; 'entered as "no default"' vs.
913 (format ":%s" protocol-value)) ; given
914 ;; and this is when the protocol is unknown
917 ;; now prompt if the search SPEC did not include a required key;
918 ;; take the result and put it in `data' AND store it in `valist'
922 ((and (null data) (eq r 'secret))
923 ;; special case prompt for passwords
924 (read-passwd (format "Password for %s: " info-so-far)))
927 (format "Enter %s for %s%s: "
928 r info-so-far default-string)
933 (setq artificial (plist-put artificial
934 (intern (concat ":" (symbol-name r)))
936 (lexical-let ((data data))
940 ;; when r is not an empty string...
941 (when (and (stringp data)
943 ;; append the key (the symbol name of r) and the value in r
944 (setq add (concat add
947 (if (zerop (length add)) "" " ")
948 ;; remap auth-source tokens to netrc
955 ;; the value will be printed in %S format
959 (when (file-exists-p file)
960 (insert-file-contents file))
961 (when auth-source-gpg-encrypt-to
962 ;; (see bug#7487) making `epa-file-encrypt-to' local to
963 ;; this buffer lets epa-file skip the key selection query
964 ;; (see the `local-variable-p' check in
965 ;; `epa-file-write-region').
966 (unless (local-variable-p 'epa-file-encrypt-to (current-buffer))
967 (make-local-variable 'epa-file-encrypt-to))
968 (if (listp auth-source-gpg-encrypt-to)
969 (setq epa-file-encrypt-to auth-source-gpg-encrypt-to)))
970 (goto-char (point-max))
972 ;; ask AFTER we've successfully opened the file
973 (if (y-or-n-p (format "Add to file %s: line [%s]" file add))
978 (write-region (point-min) (point-max) file nil 'silent)
979 (auth-source-do-debug
980 "auth-source-netrc-create: wrote 1 new line to %s"
983 (list artificial)))))
985 ;;; Backend specific parsing: Secrets API backend
987 ;;; (let ((auth-sources '(default))) (auth-source-search :max 1 :create t))
988 ;;; (let ((auth-sources '(default))) (auth-source-search :max 1 :delete t))
989 ;;; (let ((auth-sources '(default))) (auth-source-search :max 1))
990 ;;; (let ((auth-sources '(default))) (auth-source-search))
991 ;;; (let ((auth-sources '("secrets:Login"))) (auth-source-search :max 1))
992 ;;; (let ((auth-sources '("secrets:Login"))) (auth-source-search :max 1 :signon_realm "https://git.gnus.org/Git"))
994 (defun* auth-source-secrets-search (&rest
996 &key backend create delete label
997 type max host user protocol
999 "Search the Secrets API; spec is like `auth-source'.
1001 The :label key specifies the item's label. It is the only key
1002 that can specify a substring. Any :label value besides a string
1003 will allow any label.
1005 All other search keys must match exactly. If you need substring
1006 matching, do a wider search and narrow it down yourself.
1008 You'll get back all the properties of the token as a plist.
1010 Here's an example that looks for the first item in the 'Login'
1013 \(let ((auth-sources '(\"secrets:Login\")))
1014 (auth-source-search :max 1)
1016 Here's another that looks for the first item in the 'Login'
1017 Secrets collection whose label contains 'gnus':
1019 \(let ((auth-sources '(\"secrets:Login\")))
1020 (auth-source-search :max 1 :label \"gnus\")
1022 And this one looks for the first item in the 'Login' Secrets
1023 collection that's a Google Chrome entry for the git.gnus.org site
1024 authentication tokens:
1026 \(let ((auth-sources '(\"secrets:Login\")))
1027 (auth-source-search :max 1 :signon_realm \"https://git.gnus.org/Git\"))
1031 (assert (not create) nil
1032 "The Secrets API auth-source backend doesn't support creation yet")
1034 ;; (secrets-delete-item coll elt)
1035 (assert (not delete) nil
1036 "The Secrets API auth-source backend doesn't support deletion yet")
1038 (let* ((coll (oref backend source))
1039 (max (or max 5000)) ; sanity check: default to stop at 5K
1040 (ignored-keys '(:create :delete :max :backend :label))
1041 (search-keys (loop for i below (length spec) by 2
1042 unless (memq (nth i spec) ignored-keys)
1043 collect (nth i spec)))
1044 ;; build a search spec without the ignored keys
1045 ;; if a search key is nil or t (match anything), we skip it
1046 (search-spec (apply 'append (mapcar
1048 (if (or (null (plist-get spec k))
1049 (eq t (plist-get spec k)))
1051 (list k (plist-get spec k))))
1053 ;; needed keys (always including host, login, protocol, and secret)
1054 (returned-keys (delete-dups (append
1055 '(:host :login :protocol :secret)
1057 (items (loop for item in (apply 'secrets-search-items coll search-spec)
1058 unless (and (stringp label)
1059 (not (string-match label item)))
1061 ;; TODO: respect max in `secrets-search-items', not after the fact
1062 (items (butlast items (- (length items) max)))
1063 ;; convert the item name to a full plist
1064 (items (mapcar (lambda (item)
1066 ;; make an entry for the secret (password) element
1069 (lexical-let ((v (secrets-get-secret coll item)))
1071 ;; rewrite the entry from ((k1 v1) (k2 v2)) to plist
1073 (mapcar (lambda (entry)
1074 (list (car entry) (cdr entry)))
1075 (secrets-get-attributes coll item)))))
1077 ;; ensure each item has each key in `returned-keys'
1078 (items (mapcar (lambda (plist)
1081 (mapcar (lambda (req)
1082 (if (plist-get plist req)
1090 (defun* auth-source-secrets-create (&rest
1092 &key backend type max host user protocol
1095 ;; (apply 'secrets-create-item (auth-get-source entry) name passwd spec)
1100 ;;; (auth-source-user-or-password '("login" "password") "imap.myhost.com" t "tzz")
1102 ;; deprecate the old interface
1103 (make-obsolete 'auth-source-user-or-password
1104 'auth-source-search "Emacs 24.1")
1105 (make-obsolete 'auth-source-forget-user-or-password
1106 'auth-source-forget "Emacs 24.1")
1108 (defun auth-source-user-or-password
1109 (mode host protocol &optional username create-missing delete-existing)
1110 "Find MODE (string or list of strings) matching HOST and PROTOCOL.
1112 DEPRECATED in favor of `auth-source-search'!
1114 USERNAME is optional and will be used as \"login\" in a search
1115 across the Secret Service API (see secrets.el) if the resulting
1116 items don't have a username. This means that if you search for
1117 username \"joe\" and it matches an item but the item doesn't have
1118 a :user attribute, the username \"joe\" will be returned.
1120 A non nil DELETE-EXISTING means deleting any matching password
1121 entry in the respective sources. This is useful only when
1122 CREATE-MISSING is non nil as well; the intended use case is to
1123 remove wrong password entries.
1125 If no matching entry is found, and CREATE-MISSING is non nil,
1126 the password will be retrieved interactively, and it will be
1127 stored in the password database which matches best (see
1130 MODE can be \"login\" or \"password\"."
1131 (auth-source-do-debug
1132 "auth-source-user-or-password: DEPRECATED get %s for %s (%s) + user=%s"
1133 mode host protocol username)
1135 (let* ((listy (listp mode))
1136 (mode (if listy mode (list mode)))
1138 (format "%s %s:%s %s" mode host protocol username)
1139 (format "%s %s:%s" mode host protocol)))
1140 (search (list :host host :protocol protocol))
1141 (search (if username (append search (list :user username)) search))
1142 (search (if create-missing
1143 (append search (list :create t))
1145 (search (if delete-existing
1146 (append search (list :delete t))
1148 ;; (found (if (not delete-existing)
1149 ;; (gethash cname auth-source-cache)
1150 ;; (remhash cname auth-source-cache)
1155 (auth-source-do-debug
1156 "auth-source-user-or-password: DEPRECATED cached %s=%s for %s (%s) + %s"
1158 ;; don't show the password
1159 (if (and (member "password" mode) t)
1162 host protocol username)
1163 found) ; return the found data
1164 ;; else, if not found, search with a max of 1
1165 (let ((choice (nth 0 (apply 'auth-source-search
1166 (append '(:max 1) search)))))
1170 ((equal "password" m)
1171 (push (if (plist-get choice :secret)
1172 (funcall (plist-get choice :secret))
1175 (push (plist-get choice :user) found)))))
1176 (setq found (nreverse found))
1177 (setq found (if listy found (car-safe found)))))
1181 (provide 'auth-source)
1183 ;;; auth-source.el ends here