notmuch-maildir-fcc.el (13279B)
1 ;;; notmuch-maildir-fcc.el --- inserting using a fcc handler -*- lexical-binding: t -*- 2 3 ;; Copyright © Jesse Rosenthal 4 ;; 5 ;; This file is part of Notmuch. 6 ;; 7 ;; Notmuch is free software: you can redistribute it and/or modify it 8 ;; under the terms of the GNU General Public License as published by 9 ;; the Free Software Foundation, either version 3 of the License, or 10 ;; (at your option) any later version. 11 ;; 12 ;; Notmuch is distributed in the hope that it will be useful, but 13 ;; WITHOUT ANY WARRANTY; without even the implied warranty of 14 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15 ;; General Public License for more details. 16 ;; 17 ;; You should have received a copy of the GNU General Public License 18 ;; along with Notmuch. If not, see <https://www.gnu.org/licenses/>. 19 ;; 20 ;; Authors: Jesse Rosenthal <jrosenthal@jhu.edu> 21 22 ;;; Code: 23 24 (require 'seq) 25 26 (require 'message) 27 28 (require 'notmuch-lib) 29 30 (defvar notmuch-maildir-fcc-count 0) 31 32 ;;; Options 33 34 (defcustom notmuch-fcc-dirs "sent" 35 "Determines the Fcc Header which says where to save outgoing mail. 36 37 Three types of values are permitted: 38 39 - nil: no Fcc header is added, 40 41 - a string: the value of `notmuch-fcc-dirs' is the Fcc header to 42 be used. 43 44 - an alist: the folder is chosen based on the From address of 45 the current message according to an alist mapping regular 46 expressions to folders or nil: 47 48 ((\"Sebastian@SSpaeth.de\" . \"privat\") 49 (\"spaetz@sspaeth.de\" . \"OUTBOX.OSS\") 50 (\".*\" . \"defaultinbox\")) 51 52 If none of the regular expressions match the From address, or 53 if the cdr of the matching entry is nil, then no Fcc header 54 will be added. 55 56 If `notmuch-maildir-use-notmuch-insert' is set (the default) then 57 the header should be of the form \"folder +tag1 -tag2\" where 58 folder is the folder (relative to the notmuch mailstore) to store 59 the message in, and tag1 and tag2 are tag changes to apply to the 60 stored message. This string is split using `split-string-and-unquote', 61 so a folder name containing spaces can be specified by 62 quoting each space with an immediately preceding backslash 63 or surrounding the entire folder name in double quotes. 64 65 If `notmuch-maildir-use-notmuch-insert' is nil then the Fcc 66 header should be the directory where the message should be 67 saved. A relative directory will be understood to specify a 68 directory within the notmuch mail store, (as set by the 69 database.path option in the notmuch configuration file). 70 71 In all cases you will be prompted to create the folder or 72 directory if it does not exist yet when sending a mail." 73 74 :type '(choice 75 (const :tag "No FCC header" nil) 76 (string :tag "A single folder") 77 (repeat :tag "A folder based on the From header" 78 (cons regexp (choice (const :tag "No FCC header" nil) 79 (string :tag "Folder"))))) 80 :require 'notmuch-fcc-initialization 81 :group 'notmuch-send) 82 83 (defcustom notmuch-maildir-use-notmuch-insert t 84 "Should fcc use notmuch insert instead of simple fcc." 85 :type '(choice :tag "Fcc Method" 86 (const :tag "Use notmuch insert" t) 87 (const :tag "Use simple fcc" nil)) 88 :group 'notmuch-send) 89 90 ;;; Functions which set up the fcc header in the message buffer. 91 92 (defun notmuch-fcc-header-setup () 93 "Add an Fcc header to the current message buffer. 94 95 If the Fcc header is already set, then keep it as-is. 96 Otherwise set it according to `notmuch-fcc-dirs'." 97 (let ((subdir 98 (cond 99 ((or (not notmuch-fcc-dirs) 100 (message-field-value "Fcc")) 101 ;; Nothing set or an existing header. 102 nil) 103 ((stringp notmuch-fcc-dirs) 104 notmuch-fcc-dirs) 105 ((and (listp notmuch-fcc-dirs) 106 (stringp (car notmuch-fcc-dirs))) 107 ;; Old style - no longer works. 108 (error "Invalid `notmuch-fcc-dirs' setting (old style)")) 109 ((listp notmuch-fcc-dirs) 110 (if-let ((match (seq-some (let ((from (message-field-value "From"))) 111 (pcase-lambda (`(,regexp . ,folder)) 112 (and (string-match-p regexp from) 113 (cons t folder)))) 114 notmuch-fcc-dirs))) 115 (cdr match) 116 (message "No Fcc header added.") 117 nil)) 118 (t 119 (error "Invalid `notmuch-fcc-dirs' setting (neither string nor list)"))))) 120 (when subdir 121 (if notmuch-maildir-use-notmuch-insert 122 (notmuch-maildir-add-notmuch-insert-style-fcc-header subdir) 123 (notmuch-maildir-add-file-style-fcc-header subdir))))) 124 125 (defun notmuch-maildir-add-notmuch-insert-style-fcc-header (subdir) 126 ;; Notmuch insert does not accept absolute paths, so check the user 127 ;; really want this header inserted. 128 (when (or (not (= (elt subdir 0) ?/)) 129 (y-or-n-p (format "Fcc header %s is an absolute path %s %s" subdir 130 "and notmuch insert is requested." 131 "Insert header anyway? "))) 132 (message-add-header (concat "Fcc: " subdir)))) 133 134 (defun notmuch-maildir-add-file-style-fcc-header (subdir) 135 (message-add-header 136 (concat "Fcc: " 137 (file-truename 138 ;; If the resulting directory is not an absolute path, 139 ;; prepend the standard notmuch database path. 140 (if (= (elt subdir 0) ?/) 141 subdir 142 (concat (notmuch-database-path) "/" subdir)))))) 143 144 ;;; Functions for saving a message using either method. 145 146 (defmacro with-temporary-notmuch-message-buffer (&rest body) 147 "Set-up a temporary copy of the current message-mode buffer." 148 `(let ((case-fold-search t) 149 (buf (current-buffer)) 150 (mml-externalize-attachments message-fcc-externalize-attachments)) 151 (with-current-buffer (get-buffer-create " *message temp*") 152 (message-clone-locals buf) ;; for message-encoded-mail-cache 153 (erase-buffer) 154 (insert-buffer-substring buf) 155 ,@body))) 156 157 (defun notmuch-maildir-setup-message-for-saving () 158 "Setup message for saving. 159 160 This should be called on a temporary copy. 161 This is taken from the function message-do-fcc." 162 (if (not message-encoded-mail-cache) 163 (message-encode-message-body) 164 (erase-buffer) 165 (insert message-encoded-mail-cache)) 166 (save-restriction 167 (message-narrow-to-headers) 168 (mail-encode-encoded-word-buffer)) 169 (goto-char (point-min)) 170 (when (re-search-forward 171 (concat "^" (regexp-quote mail-header-separator) "$") 172 nil t) 173 (replace-match "" t t ))) 174 175 (defun notmuch-maildir-message-do-fcc () 176 "Process Fcc headers in the current buffer. 177 178 This is a rearranged version of message mode's message-do-fcc." 179 (let (files file) 180 (save-excursion 181 (save-restriction 182 (message-narrow-to-headers) 183 (setq file (message-fetch-field "fcc" t))) 184 (when file 185 (with-temporary-notmuch-message-buffer 186 (notmuch-maildir-setup-message-for-saving) 187 (save-restriction 188 (message-narrow-to-headers) 189 (while (setq file (message-fetch-field "fcc" t)) 190 (push file files) 191 (message-remove-header "fcc" nil t))) 192 ;; Process FCC operations. 193 (mapc #'notmuch-fcc-handler files) 194 (kill-buffer (current-buffer))))))) 195 196 (defun notmuch-fcc-handler (fcc-header) 197 "Store message with notmuch insert or normal (file) fcc. 198 199 If `notmuch-maildir-use-notmuch-insert' is set then store the 200 message using notmuch insert. Otherwise store the message using 201 normal fcc." 202 (message "Doing Fcc...") 203 (if notmuch-maildir-use-notmuch-insert 204 (notmuch-maildir-fcc-with-notmuch-insert fcc-header) 205 (notmuch-maildir-fcc-file-fcc fcc-header)) 206 (message "Doing Fcc...done")) 207 208 ;;; Functions for saving a message using notmuch insert. 209 210 (defun notmuch-maildir-notmuch-insert-current-buffer (folder &optional create tags) 211 "Use notmuch insert to put the current buffer in the database. 212 213 This inserts the current buffer as a message into the notmuch 214 database in folder FOLDER. If CREATE is non-nil it will supply 215 the --create-folder flag to create the folder if necessary. TAGS 216 should be a list of tag changes to apply to the inserted message." 217 (apply 'notmuch-call-notmuch-process 218 :stdin-string (buffer-string) "insert" 219 (append (and create (list "--create-folder")) 220 (list (concat "--folder=" folder)) 221 tags))) 222 223 (defun notmuch-maildir-fcc-with-notmuch-insert (fcc-header &optional create) 224 "Store message with notmuch insert. 225 226 The fcc-header should be of the form \"folder +tag1 -tag2\" where 227 folder is the folder (relative to the notmuch mailstore) to store 228 the message in, and tag1 and tag2 are tag changes to apply to the 229 stored message. This string is split using `split-string-and-unquote', 230 so a folder name containing spaces can be specified by 231 quoting each space with an immediately preceding backslash 232 or surrounding the entire folder name in double quotes. 233 234 If CREATE is non-nil then create the folder if necessary." 235 (pcase-let ((`(,folder . ,tags) 236 (split-string-and-unquote fcc-header))) 237 (condition-case nil 238 (notmuch-maildir-notmuch-insert-current-buffer folder create tags) 239 ;; Since there are many reasons notmuch insert could fail, e.g., 240 ;; locked database, non-existent folder (which could be due to a 241 ;; typo, or just the user want a new folder, let the user decide 242 ;; how to deal with it. 243 (error 244 (let ((response (read-char-choice "Insert failed: \ 245 \(r)etry, (c)reate folder, (i)gnore, or (e)dit the header? " '(?r ?c ?i ?e)))) 246 (cl-case response 247 (?r (notmuch-maildir-fcc-with-notmuch-insert fcc-header)) 248 (?c (notmuch-maildir-fcc-with-notmuch-insert fcc-header t)) 249 (?i t) 250 (?e (notmuch-maildir-fcc-with-notmuch-insert 251 (read-from-minibuffer "Fcc header: " fcc-header))))))))) 252 253 ;;; Functions for saving a message using file fcc. 254 255 (defun notmuch-maildir-fcc-host-fixer (hostname) 256 (replace-regexp-in-string "/\\|:" 257 (lambda (s) 258 (cond ((string-equal s "/") "\\057") 259 ((string-equal s ":") "\\072") 260 (t s))) 261 hostname 262 t 263 t)) 264 265 (defun notmuch-maildir-fcc-make-uniq-maildir-id () 266 (let* ((ftime (float-time)) 267 (microseconds (mod (* 1000000 ftime) 1000000)) 268 (hostname (notmuch-maildir-fcc-host-fixer (system-name)))) 269 (cl-incf notmuch-maildir-fcc-count) 270 (format "%d.%d_%d_%d.%s" 271 ftime 272 (emacs-pid) 273 microseconds 274 notmuch-maildir-fcc-count 275 hostname))) 276 277 (defun notmuch-maildir-fcc-dir-is-maildir-p (dir) 278 (and (file-exists-p (concat dir "/cur/")) 279 (file-exists-p (concat dir "/new/")) 280 (file-exists-p (concat dir "/tmp/")))) 281 282 (defun notmuch-maildir-fcc-create-maildir (path) 283 (cond ((or (not (file-exists-p path)) (file-directory-p path)) 284 (make-directory (concat path "/cur/") t) 285 (make-directory (concat path "/new/") t) 286 (make-directory (concat path "/tmp/") t)) 287 ((file-regular-p path) 288 (error "%s is a file. Can't create maildir." path)) 289 (t 290 (error "I don't know how to create a maildir here")))) 291 292 (defun notmuch-maildir-fcc-save-buffer-to-tmp (destdir) 293 "Returns the msg id of the message written to the temp directory 294 if successful, nil if not." 295 (let ((msg-id (notmuch-maildir-fcc-make-uniq-maildir-id))) 296 (while (file-exists-p (concat destdir "/tmp/" msg-id)) 297 (setq msg-id (notmuch-maildir-fcc-make-uniq-maildir-id))) 298 (cond ((notmuch-maildir-fcc-dir-is-maildir-p destdir) 299 (write-file (concat destdir "/tmp/" msg-id)) 300 msg-id) 301 (t 302 (error "Can't write to %s. Not a maildir." destdir))))) 303 304 (defun notmuch-maildir-fcc-move-tmp-to-new (destdir msg-id) 305 (add-name-to-file 306 (concat destdir "/tmp/" msg-id) 307 (concat destdir "/new/" msg-id ":2,"))) 308 309 (defun notmuch-maildir-fcc-move-tmp-to-cur (destdir msg-id &optional mark-seen) 310 (add-name-to-file 311 (concat destdir "/tmp/" msg-id) 312 (concat destdir "/cur/" msg-id ":2," (and mark-seen "S")))) 313 314 (defun notmuch-maildir-fcc-file-fcc (fcc-header) 315 "Write the message to the file specified by FCC-HEADER. 316 317 If that fails, then offer the user a chance to correct the header 318 or filesystem." 319 (if (notmuch-maildir-fcc-dir-is-maildir-p fcc-header) 320 (notmuch-maildir-fcc-write-buffer-to-maildir fcc-header t) 321 ;; The fcc-header is not a valid maildir see if the user wants to 322 ;; fix it in some way. 323 (let* ((prompt (format "Fcc %s is not a maildir: \ 324 \(r)etry, (c)reate folder, (i)gnore, or (e)dit the header? " fcc-header)) 325 (response (read-char-choice prompt '(?r ?c ?i ?e)))) 326 (cl-case response 327 (?r (notmuch-maildir-fcc-file-fcc fcc-header)) 328 (?c (if (file-writable-p fcc-header) 329 (notmuch-maildir-fcc-create-maildir fcc-header) 330 (message "No permission to create %s." fcc-header) 331 (sit-for 2)) 332 (notmuch-maildir-fcc-file-fcc fcc-header)) 333 (?i t) 334 (?e (notmuch-maildir-fcc-file-fcc 335 (read-from-minibuffer "Fcc header: " fcc-header))))))) 336 337 (defun notmuch-maildir-fcc-write-buffer-to-maildir (destdir &optional mark-seen) 338 "Write the current buffer to maildir destdir. 339 340 If mark-seen is non-nil, then write it to \"cur/\", and mark it 341 as read, otherwise write it to \"new/\". Return t if successful, 342 and nil otherwise." 343 (let ((orig-buffer (buffer-name))) 344 (with-temp-buffer 345 (insert-buffer-substring orig-buffer) 346 (catch 'link-error 347 (let ((msg-id (notmuch-maildir-fcc-save-buffer-to-tmp destdir))) 348 (when msg-id 349 (condition-case nil 350 (if mark-seen 351 (notmuch-maildir-fcc-move-tmp-to-cur destdir msg-id t) 352 (notmuch-maildir-fcc-move-tmp-to-new destdir msg-id)) 353 (file-already-exists 354 (throw 'link-error nil)))) 355 (delete-file (concat destdir "/tmp/" msg-id)))) 356 t))) 357 358 ;;; _ 359 360 (provide 'notmuch-maildir-fcc) 361 362 ;;; notmuch-maildir-fcc.el ends here