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;;; -*-emacs-lisp-*-
;;;
;;; Local GNUS configuration -- distorted.org.uk version
;;;
;;; (c) 2014 Mark Wooding
;;;

;;;--------------------------------------------------------------------------
;;; Random configuration.

(setq auth-sources '("~/.gnus.authinfo"))

(remove-hook 'gnus-mark-article-hook
	     'gnus-summary-mark-read-and-unread-as-read)
(add-hook 'gnus-mark-article-hook 'gnus-summary-mark-unread-as-read)

(setq gnus-level-unsubscribed 6)

;;;--------------------------------------------------------------------------
;;; How to send mail.

(setq smtpmail-smtp-service 587
      smtpmail-auth-credentials "~/.gnus.authinfo")

(setq mdw-send-mail-alist
      `((distorted-smtp
	 (send-mail-function . smtpmail-send-it)
	 (smtpmail-smtp-server . "mail.distorted.org.uk")
	 (smtpmail-starttls-credentials
	  ("mail.distorted.org.uk" 587 nil nil)))
	(chiark-smtp
	 (send-mail-function . smtpmail-send-it)
	 (smtpmail-smtp-server . "smtp.dovecot.chiark.greenend.org.uk")
	 (starttls-extra-arguments "--insecure")
	 (smtpmail-starttls-credentials
	  ("smtp.dovecot.chiark.greenend.org.uk" 587 nil nil)))
	(gmail-smtp
	 (send-mail-function . smtpmail-send-it)
	 (smtpmail-smtp-server . "smtp.gmail.com")
	 (smtpmail-starttls-credentials
	  ("smtp.gmail.com" 587 nil nil))))
      mdw-guess-send-mail-alist
      `((,(concat "@\\(" "\\(chiark\\|slimy\\|coriolis\\)"
			 "\\.greenend\\.org\\.uk"
		  "\\|"  "evade\\.org\\.uk"
		  "\\|"  "fyvzl\\.net"
		  "\\)$") . chiark-smtp)
	("@g\\(\\|oogle\\)mail\\.com$" . gmail-smtp))
      mdw-default-send-mail-method nil)

;;;--------------------------------------------------------------------------
;;; News via chiark.

;; Currently we assume an SSH tunnel.  This will be fixed later.
(setq gnus-select-method
      '(nntp "chiark-ssh-kludge"
	     (nntp-open-connection-function nntp-open-authinfo-kludge)
	     (nntp-address "tunnel.chiark.greenend.org.uk")
	     (nntp-authinfo-generic "md5cookie1way mdw")))

;;;--------------------------------------------------------------------------
;;; Mail group configuration.

;; General splitting configuration.
(setq nnimap-split-rule 'nnimap-split-fancy
      nnmail-split-methods 'nnmail-split-fancy
      nnimap-split-predicate "UNDELETED"
      nnimap-split-crosspost t
      nnmail-split-crosspost t
      nnmail-split-fancy-match-partial-words nil)

;; Automatic expiry for particular groups.
(setq gnus-auto-expirable-newsgroups
      (concat "^"
	      "\\(nnimap\\+[^:]+\\|nnvirtual\\):"
	      "\\(" "\\(admin\\|crap\\|lists\\|nag\\)\\."
	      "\\|" "spam\\.oubliette"
	      "\\)"))

;; My various email addresses.
(setq message-alternative-emails bbdb-user-mail-names
      message-dont-reply-to-names message-alternative-emails)

;; Mail sent to `mdw-nospam-THING' should appear to come from this address.
(setq gnus-posting-styles
      '(("^nnimap\\+distorted:crap\\."
	 (address (concat "mdw-nospam-"
			  (substring gnus-newsgroup-name (match-end 0))
			  "@distorted.org.uk")))
	("^nnimap\\+[^:]+-chiark:"
	 ("X-mdw-Send-Mail" "chiark-smtp"))
	("^nnimap\\+google:"
	 (address "distorted.mdw@gmail.com")
	 ("X-mdw-Send-Mail" "gmail-smtp"))))

(setq nnmail-split-abbrev-alist
      (mdw-uniquify-alist
       `((to . ,(concat "to\\|cc\\|apparently-to\\|envelope-to\\|"
			"resent-to\\|resent-cc"))
	 (any . ,(concat "from\\|sender\\|resent-from\\|"
			 "to\\|cc\\|apparently-to\\|envelope-to\\|"
			 "resent-to\\|resent-cc"))
	 ,@nnmail-split-abbrev-alist)))

(defvar mdw-odin-parse-regexp
  (concat "^"
	  "\\S-+" "\\s-+"		; time limit
	  "\\(" "\\S-+" "\\)" "\\s-+"	; local part
	  "\\S-+" "\\s-+"		; recipient email address
	  "=" "\\(" "\\S-+" "\\)"	; mailbox tag
	  "\\(" "$" "\\|" "\\s-" "\\)"))

(defun mdw-odin-splits ()
  (let ((list nil))
    (with-temp-buffer
      (call-process "ssh" nil t nil
		    "stratocaster" "userv" "odin" "mail" "list")
      (goto-char (point-min))
      (while (< (point) (point-max))
	(when (looking-at mdw-odin-parse-regexp)
	  (let ((local-part (match-string 1))
		(tag (match-string 2)))
	    (push `(to ,(format "%s@odin\\.gg" local-part)
		       ,(format "crap.%s" tag))
		  list)))
	(forward-line)))
    (nreverse list)))

;; The actual splitting rules.
(setq nnmail-split-fancy
      `(|
	  ;; Administrative boxes.
	  (to "\\<\\(root\\|postgres\\|ca\\|noc\\)@" "admin.misc" t)
	  (to "\\<\\(jukebox\\|nobody\\|darchive\\)@" "admin.misc" t)
	  (to "\\<\\(hostmaster\\)@" "admin.dns" t)
	  (to "\\<\\(news\\|newsmaster\\|usenet\\)@" "admin.news" t)
	  (to "\\<\\(postmaster\\|spamd\\|mailer-daemon\\)@" "admin.mail" t)
	  (to "\\<\\(irc\\|blight\\|ircbot\\)@" "admin.irc" t)
	  (to "\\<\\(www\\|webmaster\\|mtos\\)@" "admin.web" t)
	  (to "\\<\\(ftp\\|ftpadmin\\|mirror\\)@" "admin.ftp" t)
	  (to "\\\<\\(abuse\\|security\\)@" "admin.keep" t)
	  (from "cron daemon" "admin.misc")
	  (from "uucp@distorted\\.org\\.uk" "admin.uucp")
	  (from "darchive@.*\\.distorted\\.org\\.uk" "admin.misc")
	  (from "support@aa\\.net\\.uk" "admin.aaisp")
	  (from "bugs@distorted\\.org\\.uk" "admin.bugs")
	  (from "darchive@distorted\\.org\\.uk" "admin.darchive")

	  ;; Colo and network provider.
	  (from "\\(accounts\\|support\\)@jump\\.net\\.uk" "keep.colo")
	  (from "\\(accounts\\|support\\)@aa\\.net\\.uk" "keep.aaisp")

	  ;; Mailing lists, not split out earlier.
	  (to "python-list@python\\.org" "lists.python")
	  (to ,(concat "\\(jump-\\(announce\\|discuss\\)\\)@"
		       "\\(lists\\.\\|\\)" "jump\\.net\\.uk")
	      "lists.\\1")
	  (to "cambridgecryptowhiskyclub@gmail\\.com"
	      "lists.cambridge-crypto-whisky")
	  (from ,(concat "@" "\\(" "liberty-human-rights"
			     "\\|" "libertyhumanrights"
			     "\\|" "libertymail"
			     "\\)" "\\.org\\.uk" "\\>")
		"lists.liberty" t)
	  (from "@openrightsgroup\\.org\\>" "lists.org" t)
	  (from "@warwick\\.ac\\.uk\\>" "lists.warwick-uni" t)
	  (to "chiark-\\(motd\\|announce\\)@chiark\\.greenend\\.org\\.uk"
	      "lists.chiark-announce")
	  (any "clive-cambridge-gamers@nsict\\.org" "lists.nsict-games")

	  ;; Per-sender addresses.
	  (to "\\<mdw-nospam-justgviing@" "crap.justgiving" t)
	  (to "\\<mdw-nospam-\\([^@]+\\)@" "crap.\\1" t)
	  (to "\\<mdw-nopspam-\\([^@]+\\)@" "crap.\\1" t)

	  (to "\\(markw\\|mdw\\|mw\\)@odin\\.gg" "mail.misc")
	  ,@(mdw-odin-splits)
	  (to "\\([a-z0-9]+\\)@odin\\.gg" "crap.odin-misc")

	  ;; Regular nags.
	  (from "\\(sealbot\\|cardbot\\)@ncipher\\.com" "nag.cardbot")
	  (from "\\<mailman-owner@" "nag.mailman" t)

	  ;; Uninteresting mail.
	  (from "expiry@letsencrypt\\.org" "admin.letsencrypt")

	  ;; Other splits I've not given a per-sender address.
	  (from "@\\(.*\\.\\)?lovefilm\\.com\\>" "crap.lovefilm" t)
	  (from "@\\(\\|.*\\.\\)amazon\\." "crap.amazon" t)
	  (from "@cineworldmail\\.com\\>" "crap.cineworld" t)
	  (from "@picturehouses\\.co\\.uk\\>" "crap.picturehouse" t)
	  (from "@nationwide" "crap.nationwide" t)
	  (from "nationwide@securesuiteemail\\.com\\>" "crap.nationwide" t)
	  (from "@news\\.spotifymail\\.com\\>" "crap.spotify" t)
	  (from "@action\\.openrightsgroup\\.org\\>" "crap.org" t)
	  (from "unlimited@cineworld\\.com\\>" "crap.cineworld" t)
	  (from "@tshirthell\\.com\\>" "crap.tshirt-hell" t)
	  (from "campaigns@jolla\\.com\\>" "crap.jolla" t)
	  (from "@thomann\\.de\\>" "crap.thomann" t)
	  (from "@wikimedia\\.org\\>" "crap.wikimedia" t)
	  (from "@gandi\\.net\\>" "crap.gandi" t)
	  (from "@mythic-beasts\\.com\\>" "crap.mythic-beasts" t)

	  ;; Default.
	  "mail.misc"))

;;;--------------------------------------------------------------------------
;;; Where we get mail from.

;; Read mail on the IMAP server.
(setq gnus-secondary-select-methods
      `((nnimap "distorted"
		(nnimap-address "mail.distorted.org.uk")
		(nnimap-stream starttls)
		(nnimap-inbox ("INBOX" "to.split"))
		(nnimap-split-methods nnimap-split-fancy)
		(nnimap-split-fancy ,nnmail-split-fancy)
		(nnimap-unsplittable-articles (%Deleted)))
	(nnimap "markw-distorted"
		(nnimap-address "mail.distorted.org.uk")
		(nnimap-stream starttls)
		(nnimap-inbox ("INBOX" "to.split"))
		(nnimap-split-methods nnimap-split-fancy)
		(nnimap-split-fancy ,nnmail-split-fancy)
		(nnimap-unsplittable-articles (%Deleted)))
	(nnimap "mwooding-chiark"
		(nnimap-address "imap.dovecot.chiark.greenend.org.uk")
		(nnimap-stream starttls)
		(nnimap-inbox "INBOX")
		(nnimap-unsplittable-articles (%Deleted)))
	(nnimap "google"
		(nnimap-address "imap.gmail.com")
		(nnimap-stream tls)
		(nnimap-inbox "INBOX")
		(nnimap-unsplittable-articles (%Deleted)))))

;; Send sent mail back to me.
(setq gnus-message-archive-method "mail"
      gnus-gcc-mark-as-read t
      gnus-message-archive-group "nnimap+distorted:mail.sent")

;;;----- That's all, folks --------------------------------------------------