From 5638001d70d4f0c0acedab394358a553383b3b4a Mon Sep 17 00:00:00 2001 From: Simon Josefsson Date: Sat, 23 Oct 1999 10:57:06 +0000 Subject: [PATCH] new file, imap implementation --- lisp/imap.el | 2280 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 2280 insertions(+) create mode 100644 lisp/imap.el diff --git a/lisp/imap.el b/lisp/imap.el new file mode 100644 index 000000000..661dd0a8f --- /dev/null +++ b/lisp/imap.el @@ -0,0 +1,2280 @@ +;;; imap.el --- imap library +;; Copyright (C) 1998,1999 Free Software Foundation, Inc. + +;; Author: Simon Josefsson +;; Keywords: mail + +;; This file is part of GNU Emacs. + +;; GNU Emacs is free software; you can redistribute it and/or modify +;; it under the terms of the GNU General Public License as published by +;; the Free Software Foundation; either version 2, or (at your option) +;; any later version. + +;; GNU Emacs is distributed in the hope that it will be useful, +;; but WITHOUT ANY WARRANTY; without even the implied warranty of +;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +;; GNU General Public License for more details. + +;; You should have received a copy of the GNU General Public License +;; along with GNU Emacs; see the file COPYING. If not, write to the +;; Free Software Foundation, Inc., 59 Temple Place - Suite 330, +;; Boston, MA 02111-1307, USA. + +;;; Commentary: + +;; imap.el is a elisp library providing an interface for talking to +;; IMAP servers. +;; +;; imap.el is roughly divided in two parts, one that parses IMAP +;; responses from the server and storing data into buffer-local +;; variables, and one for utility functions which send commands to +;; server, waits for an answer, and return information. The latter +;; part is layered on top of the previous. +;; +;; The imap.el API consist of the following functions, other functions +;; in this file should not be called directly and the result of doing +;; so are at best undefined. +;; +;; Global commands: +;; +;; imap-open, imap-opened, imap-authenticate, imap-close, +;; imap-capability, imap-namespace, imap-error-text +;; +;; Mailbox commands: +;; +;; imap-mailbox-get, imap-mailbox-map, imap-current-mailbox, +;; imap-current-mailbox-p, imap-search, imap-mailbox-select, +;; imap-mailbox-examine, imap-mailbox-unselect, imap-mailbox-expunge +;; imap-mailbox-close, imap-mailbox-create, imap-mailbox-delete +;; imap-mailbox-rename, imap-mailbox-lsub, imap-mailbox-list +;; imap-mailbox-subscribe, imap-mailbox-unsubscribe, imap-mailbox-status +;; imap-mailbox-acl-get, imap-mailbox-acl-set, imap-mailbox-acl-delete +;; +;; Message commands: +;; +;; imap-fetch-asynch, imap-fetch, +;; imap-current-message, imap-list-to-message-set, +;; imap-message-get, imap-message-map +;; imap-message-envelope-date, imap-message-envelope-subject, +;; imap-message-envelope-from, imap-message-envelope-sender, +;; imap-message-envelope-reply-to, imap-message-envelope-to, +;; imap-message-envelope-cc, imap-message-envelope-bcc +;; imap-message-envelope-in-reply-to, imap-message-envelope-message-id +;; imap-message-body, imap-message-flag-permanent-p +;; imap-message-flags-set, imap-message-flags-del +;; imap-message-flags-add, imap-message-copyuid +;; imap-message-copy, imap-message-appenduid +;; imap-message-append, imap-envelope-from +;; imap-body-lines +;; +;; It is my hope that theese commands should be pretty self +;; explanatory for someone that know IMAP. All functions have +;; additional documentation on how to invoke them. +;; +;; imap.el support RFC1730/2060 (IMAP4/IMAP4rev1), implemented IMAP +;; extensions are RFC2195 (CRAM-MD5), RFC2086 (ACL), RFC2342 +;; (NAMESPACE), RFC2359 (UIDPLUS), and the kerberos V4 part of RFC1731 +;; (with use of external program `imtest'). It also take advantage +;; the UNSELECT extension in Cyrus IMAPD. +;; +;; Without the work of John McClary Prevost and Jim Radford this library +;; would not have seen the light of day. Many thanks. +;; +;; This is a transcript of short interactive session for demonstration +;; purposes. +;; +;; (imap-open "my.mail.server") +;; => " *imap* my.mail.server:0" +;; +;; The rest are invoked with current buffer as the buffer returned by +;; `imap-open'. It is possible to do all without this, but it would +;; look ugly here since `buffer' is always the last argument for all +;; imap.el API functions. +;; +;; (imap-authenticate "myusername" "mypassword") +;; => auth +;; +;; (imap-mailbox-lsub "*") +;; => ("INBOX.sentmail" "INBOX.private" "INBOX.draft" "INBOX.spam") +;; +;; (imap-mailbox-list "INBOX.n%") +;; => ("INBOX.namedroppers" "INBOX.nnimap" "INBOX.ntbugtraq") +;; +;; (imap-mailbox-select "INBOX.nnimap") +;; => "INBOX.nnimap" +;; +;; (imap-mailbox-get 'exists) +;; => 166 +;; +;; (imap-mailbox-get 'uidvalidity) +;; => "908992622" +;; +;; (imap-search "FLAGGED SINCE 18-DEC-98") +;; => (235 236) +;; +;; (imap-fetch 235 "RFC822.PEEK" 'RFC822) +;; => "X-Sieve: cmu-sieve 1.3^M\nX-Username: ^M\r...." +;; +;; Todo: +;; +;; o Parse UIDs as strings? We need to overcome the 28 bit limit somehow. +;; o Don't use `read' at all (important places already fixed) +;; o Accept list of articles instead of message set string in most +;; imap-message-* functions. +;; o Cyrus IMAPd 1.6.x `imtest' support in the imtest wrapper +;; o Format-spec'ify the ssl horror +;; +;; Revision history: +;; +;; - this is unreleased software +;; + +;;; Code: + +(eval-and-compile + (require 'cl) + (autoload 'open-ssl-stream "ssl") + (autoload 'base64-decode-string "base64") + (autoload 'rfc2104-hash "rfc2104") + (autoload 'md5 "md5") + (autoload 'utf7-encode "utf7") + (autoload 'utf7-decode "utf7") + (autoload 'format-spec "format-spec") + (autoload 'format-spec-make "format-spec")) + +;; User variables. + +(defvar imap-imtest-program "imtest -kp %s %p" + "How to call program for Kerberos 4 authentication. +%s is replaced with server and %p with port to connect to. The +program should accept IMAP commands on stdin and return responses to +stdout.") + +(defvar imap-ssl-program 'auto + "Program to use for SSL connections. It is called like this + +`imap-ssl-program' `imap-ssl-arguments' -ssl2 -connect host:port + +where -ssl2 can also be -ssl3 to indicate which ssl version to use. It +should accept IMAP commands on stdin and return responses to stdout. + +For SSLeay set this to \"s_client\" and `imap-ssl-arguments' to nil, +for OpenSSL set this to \"openssl\" and `imap-ssl-arguments' to +\"s_client\". + +If 'auto it tries s_client first and then openssl.") + +(defvar imap-ssl-arguments nil + "Arguments to pass to `imap-ssl-program'. + +For SSLeay set this to nil, for OpenSSL to \"s_client\". + +If `imap-ssl-program' is 'auto this variable has no effect.") + +(defvar imap-default-user (user-login-name) + "Default username to use.") + +(defvar imap-error nil + "Error codes from the last command.") + +;; Various variables. + +(defvar imap-fetch-data-hook nil + "Hooks called after receiving each FETCH response.") + +(defvar imap-streams '(kerberos4 ssl network) + "Priority of streams to consider when opening connection to +server.") + +(defvar imap-stream-alist + '((kerberos4 imap-kerberos4s-p imap-kerberos4-open) + (ssl imap-ssl-p imap-ssl-open) + (network imap-network-p imap-network-open)) + "Definition of network streams. + +(NAME CHECK OPEN) + +NAME names the stream, CHECK is a function returning non-nil if the +server support the stream and OPEN is a function for opening the +stream.") + +(defvar imap-authenticators '(kerberos4 cram-md5 login anonymous) + "Priority of authenticators to consider when authenticating to +server.") + +(defvar imap-authenticator-alist + '((kerberos4 imap-kerberos4a-p imap-kerberos4-auth) + (cram-md5 imap-cram-md5-p imap-cram-md5-auth) + (login imap-login-p imap-login-auth) + (anonymous imap-anonymous-p imap-anonymous-auth)) + "Definition of authenticators. + +(NAME CHECK AUTHENTICATE) + +NAME names the authenticator. CHECK is a function returning non-nil if +the server support the authenticator and AUTHENTICATE is a function +for doing the actuall authentification.") + +(defvar imap-utf7-p nil + "If non-nil, do utf7 encoding/decoding of mailbox names. +Since the UTF7 decoding currently only decodes into ISO-8859-1 +characters, you may disable this decoding if you need to access UTF7 +encoded mailboxes which doesn't translate into ISO-8859-1.") + +;; Internal constants. Change theese and die. + +(defconst imap-default-port 143) +(defconst imap-default-ssl-port 993) +(defconst imap-default-stream 'network) +(defconst imap-coding-system-for-read 'binary) +(defconst imap-coding-system-for-write 'binary) +(defconst imap-local-variables '(imap-server + imap-port + imap-client-eol + imap-server-eol + imap-auth + imap-stream + imap-username + imap-password + imap-current-mailbox + imap-current-target-mailbox + imap-message-data + imap-capability + imap-namespace + imap-state + imap-reached-tag + imap-failed-tags + imap-tag + imap-process + imap-mailbox-data)) + +;; Internal variables. + +(defvar imap-stream nil) +(defvar imap-auth nil) +(defvar imap-server nil) +(defvar imap-port nil) +(defvar imap-username nil) +(defvar imap-password nil) +(defvar imap-state 'closed + "IMAP state. Valid states are `closed', `initial', `nonauth', +`auth', `selected' and `examine'.") + +(defvar imap-server-eol "\r\n" + "The EOL string sent from the server.") + +(defvar imap-client-eol "\r\n" + "The EOL string we send to the server.") + +(defvar imap-current-mailbox nil + "Current mailbox name.") + +(defvar imap-current-target-mailbox nil + "Current target mailbox for COPY and APPEND commands.") + +(defvar imap-mailbox-data nil + "Obarray with mailbox data.") + +(defvar imap-mailbox-prime 997 + "Length of imap-mailbox-data.") + +(defvar imap-current-message nil + "Current message number.") + +(defvar imap-message-data nil + "Obarray with message data.") + +(defvar imap-message-prime 997 + "Length of imap-message-data.") + +(defvar imap-capability nil + "Capability for server.") + +(defvar imap-namespace nil + "Namespace for current server.") + +(defvar imap-reached-tag 0 + "Lower limit on command tags that have been parsed.") + +(defvar imap-failed-tags nil + "Alist of tags that failed. Each element is a list with four +elements; tag (a integer), response state (a symbol, `OK', `NO' or +`BAD'), response code (a string), and human readable response text (a +string).") + +(defvar imap-tag 0 + "Command tag number.") + +(defvar imap-process nil + "Process.") + +(defvar imap-continuation nil + "Non-nil indicates that the server emitted a continuation request. The +actually value is really the text on the continuation line.") + +(defvar imap-log "*imap-log*" + "Imap session trace.") + +(defvar imap-debug nil;"*imap-debug*" + "Random debug spew.") + + +;; Utility functions: + +(defsubst imap-disable-multibyte () + "Enable multibyte in the current buffer." + (when (fboundp 'set-buffer-multibyte) + (set-buffer-multibyte nil))) + +(defun imap-read-passwd (prompt &rest args) + "Read a password using PROMPT. If ARGS, PROMPT is used as an +argument to `format'." + (let ((prompt (if args + (apply 'format prompt args) + prompt))) + (funcall (if (or (fboundp 'read-passwd) + (and (load "subr" t) + (fboundp 'read-passwd)) + (and (load "passwd" t) + (fboundp 'read-passwd))) + 'read-passwd + (autoload 'ange-ftp-read-passwd "ange-ftp") + 'ange-ftp-read-passwd) + prompt))) + +(defsubst imap-utf7-encode (string) + (if imap-utf7-p + (and string + (condition-case () + (utf7-encode string t) + (error (message + "imap: Could not UTF7 encode `%s', using it unencoded..." + string) + string))) + string)) + +(defsubst imap-utf7-decode (string) + (if imap-utf7-p + (and string + (condition-case () + (utf7-decode string t) + (error (message + "imap: Could not UTF7 decode `%s', using it undecoded..." + string) + string))) + string)) + +(defsubst imap-ok-p (status) + (if (eq status 'OK) + t + (setq imap-error status) + nil)) + +(defun imap-error-text (&optional buffer) + (with-current-buffer (or buffer (current-buffer)) + (nth 3 (car imap-failed-tags)))) + + +;; Server functions; stream stuff: + +(defun imap-kerberos4s-p (buffer) + (imap-capability 'AUTH=KERBEROS_V4 buffer)) + +(defun imap-kerberos4-open (name buffer server port) + (message "Opening Kerberized IMAP connection...") + (let* ((port (or port imap-default-port)) + (coding-system-for-read imap-coding-system-for-read) + (coding-system-for-write imap-coding-system-for-write) + (process (start-process + name buffer shell-file-name shell-command-switch + (format-spec + imap-imtest-program + (format-spec-make ?s server ?p (number-to-string port)))))) + (when process + (with-current-buffer buffer + (setq imap-client-eol "\n") + ;; Result of authentication is a string: __Full privacy protection__ + (while (and (memq (process-status process) '(open run)) + (goto-char (point-min)) + (not (and (imap-parse-greeting) + (re-search-forward "__\\(.*\\)__\n" nil t)))) + (accept-process-output process 1) + (sit-for 1)) + (and imap-log + (with-current-buffer (get-buffer-create imap-log) + (imap-disable-multibyte) + (buffer-disable-undo) + (goto-char (point-max)) + (insert-buffer-substring buffer))) + (let ((response (match-string 1))) + (erase-buffer) + (message "Kerberized IMAP connection: %s" response) + (if (and response (let ((case-fold-search nil)) + (not (string-match "failed" response)))) + process + (if (memq (process-status process) '(open run)) + (imap-send-command-wait "LOGOUT")) + (delete-process process) + nil)))))) + +(defun imap-ssl-p (buffer) + nil) + +(defun imap-ssl-open-2 (name buffer server port &optional extra-ssl-args) + (let* ((port (or port imap-default-ssl-port)) + (coding-system-for-read imap-coding-system-for-read) + (coding-system-for-write imap-coding-system-for-write) + (ssl-program-name imap-ssl-program) + (ssl-program-arguments (append imap-ssl-arguments extra-ssl-args + (list "-connect" + (format "%s:%d" server port)))) + (process (ignore-errors (open-ssl-stream name buffer server port)))) + (when process + (with-current-buffer buffer + (goto-char (point-min)) + (while (and (memq (process-status process) '(open run)) + (goto-char (point-max)) + (forward-line -1) + (not (imap-parse-greeting))) + (accept-process-output process 1) + (sit-for 1)) + (and imap-log + (with-current-buffer (get-buffer-create imap-log) + (imap-disable-multibyte) + (buffer-disable-undo) + (goto-char (point-max)) + (insert-buffer-substring buffer))) + (erase-buffer)) + (when (memq (process-status process) '(open run)) + process)))) + +(defun imap-ssl-open-1 (name buffer server port &optional extra-ssl-args) + (or (and (eq imap-ssl-program 'auto) + (let ((imap-ssl-program "s_client") + (imap-ssl-arguments nil)) + (message "imap: Opening IMAP connection with %s %s..." + imap-ssl-program (car-safe extra-ssl-args)) + (imap-ssl-open-2 name buffer server port extra-ssl-args))) + (and (eq imap-ssl-program 'auto) + (let ((imap-ssl-program "openssl") + (imap-ssl-arguments '("s_client"))) + (message "imap: Opening IMAP connection with %s %s..." + imap-ssl-program (car-safe extra-ssl-args)) + (imap-ssl-open-2 name buffer server port extra-ssl-args))) + (and (not (eq imap-ssl-program 'auto)) + (progn (message "imap: Opening IMAP connection with %s %s..." + imap-ssl-program (car-safe extra-ssl-args)) + (imap-ssl-open-2 name buffer server port extra-ssl-args))))) + +(defun imap-ssl-open (name buffer server port) + (or (imap-ssl-open-1 name buffer server port '("-ssl3")) + (imap-ssl-open-1 name buffer server port '("-ssl2")))) + +(defun imap-network-p (buffer) + t) + +(defun imap-network-open (name buffer server port) + (let* ((port (or port imap-default-port)) + (coding-system-for-read imap-coding-system-for-read) + (coding-system-for-write imap-coding-system-for-write) + (process (open-network-stream name buffer server port))) + (when process + (while (and (memq (process-status process) '(open run)) + (goto-char (point-min)) + (not (imap-parse-greeting))) + (accept-process-output process 1) + (sit-for 1)) + (and imap-log + (with-current-buffer (get-buffer-create imap-log) + (imap-disable-multibyte) + (buffer-disable-undo) + (goto-char (point-max)) + (insert-buffer-substring buffer))) + (when (memq (process-status process) '(open run)) + process)))) + +;; Server functions; authenticator stuff: + +(defun imap-interactive-login (buffer loginfunc) + "Login to server in BUFFER. LOGINFUNC is passed a username and a +password, it should return t if it where sucessful authenticating +itself to the server, nil otherwise. Returns t if login was +successful, nil otherwise." + (with-current-buffer buffer + (make-variable-buffer-local 'imap-username) + (make-variable-buffer-local 'imap-password) + (let (user passwd ret) +;; (condition-case () + (while (or (not user) (not passwd)) + (setq user (or imap-username + (read-from-minibuffer + (concat "IMAP username for " imap-server ": ") + (or user imap-default-user)))) + (setq passwd (or imap-password + (imap-read-passwd + (concat "IMAP password for " user "@" + imap-server ": ")))) + (when (and user passwd) + (if (funcall loginfunc user passwd) + (progn + (setq ret t + imap-username user) + (if (and (not imap-password) + (y-or-n-p "Store password for this session? ")) + (setq imap-password passwd))) + (message "Login failed...") + (setq passwd nil) + (sit-for 1)))) +;; (quit (with-current-buffer buffer +;; (setq user nil +;; passwd nil))) +;; (error (with-current-buffer buffer +;; (setq user nil +;; passwd nil)))) + ret))) + +(defun imap-kerberos4a-p (buffer) + (imap-capability 'AUTH=KERBEROS_V4 buffer)) + +(defun imap-kerberos4-auth (buffer) + (eq imap-stream 'kerberos4)) + +(defun imap-cram-md5-p (buffer) + (imap-capability 'AUTH=CRAM-MD5 buffer)) + +(defun imap-cram-md5-auth (buffer) + "Login to server using the AUTH CRAM-MD5 method." + (imap-interactive-login + buffer + (lambda (user passwd) + (imap-ok-p + (imap-send-command-wait + (list + "AUTHENTICATE CRAM-MD5" + (lambda (challenge) + (let* ((decoded (base64-decode-string challenge)) + (hash (rfc2104-hash 'md5 64 16 passwd decoded)) + (response (concat user " " hash)) + (encoded (base64-encode-string response))) + encoded)))))))) + +(defun imap-login-p (buffer) + (not (imap-capability 'X-LOGIN-CMD-DISABLED buffer))) + +(defun imap-login-auth (buffer) + "Login to server using the LOGIN command." + (imap-interactive-login buffer + (lambda (user passwd) + (imap-ok-p (imap-send-command-wait + (concat "LOGIN \"" user "\" \"" + passwd "\"")))))) + +(defun imap-anonymous-p (buffer) + t) + +(defun imap-anonymous-auth (buffer) + (with-current-buffer buffer + (imap-ok-p (imap-send-command-wait + (concat "LOGIN anonymous \"" (concat (user-login-name) "@" + (system-name)) "\""))))) + +;; Server functions: + +(defun imap-open-1 (buffer) + (with-current-buffer buffer + (erase-buffer) + (setq imap-current-mailbox nil + imap-current-message nil + imap-state 'initial + imap-process (condition-case () + (funcall (nth 2 (assq imap-stream + imap-stream-alist)) + "imap" buffer imap-server imap-port) + ((error quit) nil))) + (when imap-process + (set-process-filter imap-process 'imap-arrival-filter) + (set-process-sentinel imap-process 'imap-sentinel) + (while (and (eq imap-state 'initial) + (memq (process-status imap-process) '(open run))) + (message "Waiting for response from %s..." imap-server) + (accept-process-output imap-process 1)) + (message "Waiting for response from %s...done" imap-server) + (and (memq (process-status imap-process) '(open run)) + imap-process)))) + +(defun imap-open (server &optional port stream auth buffer) + "Open a IMAP connection to host SERVER at PORT returning a +buffer. If PORT is unspecified, a default value is used (143 except +for SSL which use 993). +STREAM indicates the stream to use, see `imap-streams' for available +streams. If nil, it choices the best stream the server is capable of. +AUTH indicates authenticator to use, see `imap-authenticators' for +available authenticators. If nil, it choices the best stream the +server is capable of. +BUFFER can be a buffer or a name of a buffer, which is created if +necessery. If nil, the buffer name is generated." + (setq buffer (or buffer (format " *imap* %s:%d" server (or port 0)))) + (with-current-buffer (get-buffer-create buffer) + (if (imap-opened buffer) + (imap-close buffer)) + (mapc 'make-variable-buffer-local imap-local-variables) + (imap-disable-multibyte) + (buffer-disable-undo) + (setq imap-server (or server imap-server)) + (setq imap-port (or port imap-port)) + (setq imap-auth (or auth imap-auth)) + (setq imap-stream (or stream imap-stream)) + (when (let ((imap-stream (or imap-stream imap-default-stream))) + (imap-open-1 buffer)) + ;; Choose stream. + (let (stream-changed) + (when (null imap-stream) + (let ((streams imap-streams)) + (while (setq stream (pop streams)) + (if (funcall (nth 1 (assq stream imap-stream-alist)) buffer) + (setq stream-changed (not (eq (or imap-stream + imap-default-stream) + stream)) + imap-stream stream + streams nil))) + (unless imap-stream + (error "Couldn't figure out a stream for server")))) + (when stream-changed + (message "Reconnecting with %s..." imap-stream) + (imap-close buffer) + (imap-open-1 buffer) + (setq imap-capability nil))) + (if (imap-opened buffer) + ;; Choose authenticator + (when (null imap-auth) + (let ((auths imap-authenticators)) + (while (setq auth (pop auths)) + (if (funcall (nth 1 (assq auth imap-authenticator-alist)) + buffer) + (setq imap-auth auth + auths nil))) + (unless imap-auth + (error "Couldn't figure out authenticator for server")))))) + (when (imap-opened buffer) + (setq imap-mailbox-data (make-vector imap-mailbox-prime 0)) + buffer))) + +(defun imap-opened (&optional buffer) + "Return non-nil if connection to imap server in BUFFER is open. If +BUFFER is nil then the current buffer is used." + (and (setq buffer (get-buffer (or buffer (current-buffer)))) + (buffer-live-p buffer) + (with-current-buffer buffer + (and imap-process + (memq (process-status imap-process) '(open run)))))) + +(defun imap-authenticate (&optional user passwd buffer) + "Authenticate to server in BUFFER, using current buffer if nil. It +uses the authenticator specified when opening the server. If the +authenticator requires username/passwords, they are queried from the +user and optionally stored in the buffer. If USER and/or PASSWD is +specified, the user will not be questioned and the username and/or +password is remembered in the buffer." + (with-current-buffer (or buffer (current-buffer)) + (when (eq imap-state 'nonauth) + (make-variable-buffer-local 'imap-username) + (make-variable-buffer-local 'imap-password) + (if user (setq imap-username user)) + (if passwd (setq imap-password passwd)) + (if (funcall (nth 2 (assq imap-auth imap-authenticator-alist)) buffer) + (setq imap-state 'auth))))) + +(defun imap-close (&optional buffer) + "Close connection to server in BUFFER. If BUFFER is nil, the current +buffer is used." + (with-current-buffer (or buffer (current-buffer)) + (and (imap-opened) + (not (imap-ok-p (imap-send-command-wait "LOGOUT"))) + (message "Server %s didn't let me log out" imap-server)) + (when (and imap-process + (memq (process-status imap-process) '(open run))) + (delete-process imap-process)) + (setq imap-current-mailbox nil + imap-current-message nil + imap-process nil) + (erase-buffer) + t)) + +(defun imap-capability (&optional identifier buffer) + "Return a list of identifiers which server in BUFFER support. If +IDENTIFIER, return non-nil if it's among the servers capabilities. If +BUFFER is nil, the current buffer is assumed." + (with-current-buffer (or buffer (current-buffer)) + (unless imap-capability + (unless (imap-ok-p (imap-send-command-wait "CAPABILITY")) + (setq imap-capability '(IMAP2)))) + (if identifier + (memq (intern (upcase (symbol-name identifier))) imap-capability) + imap-capability))) + +(defun imap-namespace (&optional buffer) + "Return a namespace hierarchy at server in BUFFER. If BUFFER is nil, +the current buffer is assumed." + (with-current-buffer (or buffer (current-buffer)) + (unless imap-namespace + (when (imap-capability 'NAMESPACE) + (imap-send-command-wait "NAMESPACE"))) + imap-namespace)) + +(defun imap-send-command-wait (command &optional buffer) + (imap-wait-for-tag (imap-send-command command buffer) buffer)) + + +;; Mailbox functions: + +(defun imap-mailbox-put (propname value &optional mailbox buffer) + (with-current-buffer (or buffer (current-buffer)) + (if imap-mailbox-data + (put (intern (or mailbox imap-current-mailbox) imap-mailbox-data) + propname value) + (error "Imap-mailbox-data is nil, prop %s value %s mailbox %s buffer %s" + propname value mailbox (current-buffer))) + t)) + +(defsubst imap-mailbox-get-1 (propname &optional mailbox) + (get (intern-soft (or mailbox imap-current-mailbox) imap-mailbox-data) + propname)) + +(defun imap-mailbox-get (propname &optional mailbox buffer) + (let ((mailbox (imap-utf7-encode mailbox))) + (with-current-buffer (or buffer (current-buffer)) + (imap-mailbox-get-1 propname (or mailbox imap-current-mailbox))))) + +(defun imap-mailbox-map-1 (func &optional mailbox-decoder buffer) + (with-current-buffer (or buffer (current-buffer)) + (let (result) + (mapatoms + (lambda (s) + (push (funcall func (if mailbox-decoder + (funcall mailbox-decoder (symbol-name s)) + (symbol-name s))) result)) + imap-mailbox-data) + result))) + +(defun imap-mailbox-map (func &optional buffer) + "Map a function across each mailbox in `imap-mailbox-data', +returning a list. Function should take a mailbox name (a string) as +the only argument." + (imap-mailbox-map-1 func 'imap-utf7-decode buffer)) + +(defun imap-current-mailbox (&optional buffer) + (with-current-buffer (or buffer (current-buffer)) + (imap-utf7-decode imap-current-mailbox))) + +(defun imap-current-mailbox-p-1 (mailbox &optional examine) + (and (string= mailbox imap-current-mailbox) + (or (and examine + (eq imap-state 'examine)) + (and (not examine) + (eq imap-state 'selected))))) + +(defun imap-current-mailbox-p (mailbox &optional examine buffer) + (with-current-buffer (or buffer (current-buffer)) + (imap-current-mailbox-p-1 (imap-utf7-encode mailbox) examine))) + +(defun imap-mailbox-select-1 (mailbox &optional examine) + "Select MAILBOX on server in BUFFER. If EXAMINE is non-nil, do a +read-only select." + (if (imap-current-mailbox-p-1 mailbox examine) + imap-current-mailbox + (setq imap-current-mailbox mailbox) + (if (imap-ok-p (imap-send-command-wait + (concat (if examine "EXAMINE" "SELECT") " \"" + mailbox "\""))) + (progn + (setq imap-message-data (make-vector imap-message-prime 0) + imap-state (if examine 'examine 'selected)) + imap-current-mailbox) + ;; Failed SELECT/EXAMINE unselects current mailbox + (setq imap-current-mailbox nil)))) + +(defun imap-mailbox-select (mailbox &optional examine buffer) + (with-current-buffer (or buffer (current-buffer)) + (imap-utf7-decode + (imap-mailbox-select-1 (imap-utf7-encode mailbox) examine)))) + +(defun imap-mailbox-examine (mailbox &optional buffer) + "Examine MAILBOX on server in BUFFER" + (imap-mailbox-select mailbox 'exmine buffer)) + +(defun imap-mailbox-unselect (&optional buffer) + "Close current folder in BUFFER, without expunging articles." + (with-current-buffer (or buffer (current-buffer)) + (when (or (eq imap-state 'auth) + (and (imap-capability 'UNSELECT) + (imap-ok-p (imap-send-command-wait "UNSELECT"))) + (and (imap-ok-p + (imap-send-command-wait (concat "EXAMINE \"" + imap-current-mailbox + "\""))) + (imap-ok-p (imap-send-command-wait "CLOSE")))) + (setq imap-current-mailbox nil + imap-message-data nil + imap-state 'auth) + t))) + +(defun imap-mailbox-expunge (&optional buffer) + "Expunge articles in current folder in BUFFER. If BUFFER is +nil the current buffer is assumed." + (with-current-buffer (or buffer (current-buffer)) + (when (and imap-current-mailbox (not (eq imap-state 'examine))) + (imap-ok-p (imap-send-command-wait "EXPUNGE"))))) + +(defun imap-mailbox-close (&optional buffer) + "Expunge articles and close current folder in BUFFER. If BUFFER is +nil the current buffer is assumed." + (with-current-buffer (or buffer (current-buffer)) + (when (and imap-current-mailbox + (imap-ok-p (imap-send-command-wait "CLOSE"))) + (setq imap-current-mailbox nil + imap-message-data nil + imap-state 'auth) + t))) + +(defun imap-mailbox-create-1 (mailbox) + (imap-ok-p (imap-send-command-wait (list "CREATE \"" mailbox "\"")))) + +(defun imap-mailbox-create (mailbox &optional buffer) + "Create MAILBOX on server in BUFFER. If BUFFER is nil the current +buffer is assumed." + (with-current-buffer (or buffer (current-buffer)) + (imap-mailbox-create-1 (imap-utf7-encode mailbox)))) + +(defun imap-mailbox-delete (mailbox &optional buffer) + "Delete MAILBOX on server in BUFFER. If BUFFER is nil the current +buffer is assumed." + (let ((mailbox (imap-utf7-encode mailbox))) + (with-current-buffer (or buffer (current-buffer)) + (imap-ok-p + (imap-send-command-wait (list "DELETE \"" mailbox "\"")))))) + +(defun imap-mailbox-rename (oldname newname &optional buffer) + "Rename mailbox OLDNAME to NEWNAME on server in BUFFER. If BUFFER is +nil the current buffer is assumed." + (let ((oldname (imap-utf7-encode oldname)) + (newname (imap-utf7-encode newname))) + (with-current-buffer (or buffer (current-buffer)) + (imap-ok-p + (imap-send-command-wait (list "RENAME \"" oldname "\" " + "\"" newname "\"")))))) + +(defun imap-mailbox-lsub (&optional root reference add-delimiter buffer) + "Return a list of subscribed mailboxes on server in BUFFER. +If ROOT is non-nil, only list matching mailboxes. If ADD-DELIMITER is +non-nil, a hierarchy delimiter is added to root. REFERENCE is a +implementation-specific string that has to be passed to lsub command." + (with-current-buffer (or buffer (current-buffer)) + ;; Make sure we know the hierarchy separator for root's hierarchy + (when (and add-delimiter (null (imap-mailbox-get-1 'delimiter root))) + (imap-send-command-wait (concat "LIST \"" reference "\" \"" + (imap-utf7-encode root) "\""))) + ;; clear list data (NB not delimiter and other stuff) + (imap-mailbox-map-1 (lambda (mailbox) + (imap-mailbox-put 'lsub nil mailbox))) + (when (imap-ok-p + (imap-send-command-wait + (concat "LSUB \"" reference "\" \"" (imap-utf7-encode root) + (and add-delimiter (imap-mailbox-get-1 'delimiter root)) + "%\""))) + (let (out) + (imap-mailbox-map-1 (lambda (mailbox) + (when (imap-mailbox-get-1 'lsub mailbox) + (push (imap-utf7-decode mailbox) out)))) + (nreverse out))))) + +(defun imap-mailbox-list (root &optional reference add-delimiter buffer) + "Return a list of mailboxes matching ROOT on server in BUFFER. +If ADD-DELIMITER is non-nil, a hierarchy delimiter is added to +root. REFERENCE is a implementation-specific string that has to be +passed to list command." + (with-current-buffer (or buffer (current-buffer)) + ;; Make sure we know the hierarchy separator for root's hierarchy + (when (and add-delimiter (null (imap-mailbox-get-1 'delimiter root))) + (imap-send-command-wait (concat "LIST \"" reference "\" \"" + (imap-utf7-encode root) "\""))) + ;; clear list data (NB not delimiter and other stuff) + (imap-mailbox-map-1 (lambda (mailbox) + (imap-mailbox-put 'list nil mailbox))) + (when (imap-ok-p + (imap-send-command-wait + (concat "LIST \"" reference "\" \"" (imap-utf7-encode root) + (and add-delimiter (imap-mailbox-get-1 'delimiter root)) + "%\""))) + (let (out) + (imap-mailbox-map-1 (lambda (mailbox) + (when (imap-mailbox-get-1 'list mailbox) + (push (imap-utf7-decode mailbox) out)))) + (nreverse out))))) + +(defun imap-mailbox-subscribe (mailbox &optional buffer) + "Send the SUBSCRIBE command on the mailbox to server in +BUFFER. Returns non-nil if successful." + (with-current-buffer (or buffer (current-buffer)) + (imap-ok-p (imap-send-command-wait (concat "SUBSCRIBE \"" + (imap-utf7-encode mailbox) + "\""))))) + +(defun imap-mailbox-unsubscribe (mailbox &optional buffer) + "Send the SUBSCRIBE command on the mailbox to server in +BUFFER. Returns non-nil if successful." + (with-current-buffer (or buffer (current-buffer)) + (imap-ok-p (imap-send-command-wait (concat "UNSUBSCRIBE " + (imap-utf7-encode mailbox) + "\""))))) + +(defun imap-mailbox-status (mailbox items &optional buffer) + "Get status items ITEM in MAILBOX from server in BUFFER. ITEMS can +be a symbol or a list of symbols, valid symbols are one of the STATUS +data items -- ie 'messages, 'recent, 'uidnext, 'uidvalidity or +'unseen. If ITEMS is a list of symbols, a list of values is returned, +if ITEMS is a symbol only it's value is returned." + (with-current-buffer (or buffer (current-buffer)) + (when (imap-ok-p + (imap-send-command-wait (list "STATUS \"" + (imap-utf7-encode mailbox) + "\" " + (format "%s" + (if (listp items) + items + (list items)))))) + (if (listp items) + (mapcar (lambda (item) + (imap-mailbox-get-1 item mailbox)) + items) + (imap-mailbox-get-1 items mailbox))))) + +(defun imap-mailbox-acl-get (&optional mailbox buffer) + "Get ACL on mailbox from server in BUFFER." + (let ((mailbox (imap-utf7-encode mailbox))) + (with-current-buffer (or buffer (current-buffer)) + (when (imap-ok-p + (imap-send-command-wait (list "GETACL \"" + (or mailbox imap-current-mailbox) + "\""))) + (imap-mailbox-get-1 'acl (or mailbox imap-current-mailbox)))))) + +(defun imap-mailbox-acl-set (identifier rights &optional mailbox buffer) + "Change/set ACL for IDENTIFIER to RIGHTS in MAILBOX from server in +BUFFER." + (let ((mailbox (imap-utf7-encode mailbox))) + (with-current-buffer (or buffer (current-buffer)) + (imap-ok-p + (imap-send-command-wait (list "SETACL \"" + (or mailbox imap-current-mailbox) + "\" " + identifier + " " + rights)))))) + +(defun imap-mailbox-acl-delete (identifier &optional mailbox buffer) + "Removes any pair for IDENTIFIER in MAILBOX from +server in BUFFER." + (let ((mailbox (imap-utf7-encode mailbox))) + (with-current-buffer (or buffer (current-buffer)) + (imap-ok-p + (imap-send-command-wait (list "DELETEACL \"" + (or mailbox imap-current-mailbox) + "\" " + identifier)))))) + + +;; Message functions: + +(defun imap-current-message (&optional buffer) + (with-current-buffer (or buffer (current-buffer)) + imap-current-message)) + +(defun imap-list-to-message-set (list) + (mapconcat (lambda (item) + (number-to-string item)) + (if (listp list) + list + (list list)) + ",")) + +(defun imap-fetch-asynch (uids props &optional nouidfetch buffer) + (with-current-buffer (or buffer (current-buffer)) + (imap-send-command (format "%sFETCH %s %s" (if nouidfetch "" "UID ") + (if (listp uids) + (imap-list-to-message-set uids) + uids) + props)))) + +(defun imap-fetch (uids props &optional receive nouidfetch buffer) + "Fetch properties PROPS from message set UIDS from server in +BUFFER. UIDS can be a string, number or a list of numbers. If RECEIVE +is non-nil return theese properties." + (with-current-buffer (or buffer (current-buffer)) + (when (imap-ok-p (imap-send-command-wait + (format "%sFETCH %s %s" (if nouidfetch "" "UID ") + (if (listp uids) + (imap-list-to-message-set uids) + uids) + props))) + (if (or (null receive) (stringp uids)) + t + (if (listp uids) + (mapcar (lambda (uid) + (if (listp receive) + (mapcar (lambda (prop) + (imap-message-get uid prop)) + receive) + (imap-message-get uid receive))) + uids) + (imap-message-get uids receive)))))) + +(defun imap-message-put (uid propname value &optional buffer) + (with-current-buffer (or buffer (current-buffer)) + (if imap-message-data + (put (intern (number-to-string uid) imap-message-data) + propname value) + (error "Imap-message-data is nil, uid %s prop %s value %s buffer %s" + uid propname value (current-buffer))) + t)) + +(defun imap-message-get (uid propname &optional buffer) + (with-current-buffer (or buffer (current-buffer)) + (get (intern-soft (number-to-string uid) imap-message-data) + propname))) + +(defun imap-message-map (func propname &optional buffer) + "Map a function across each mailbox in `imap-message-data', +returning a list." + (with-current-buffer (or buffer (current-buffer)) + (let (result) + (mapatoms + (lambda (s) + (push (funcall func (get s 'UID) (get s propname)) result)) + imap-message-data) + result))) + +(defmacro imap-message-envelope-date (uid &optional buffer) + `(with-current-buffer (or ,buffer (current-buffer)) + (elt (imap-message-get ,uid 'ENVELOPE) 0))) + +(defmacro imap-message-envelope-subject (uid &optional buffer) + `(with-current-buffer (or ,buffer (current-buffer)) + (elt (imap-message-get ,uid 'ENVELOPE) 1))) + +(defmacro imap-message-envelope-from (uid &optional buffer) + `(with-current-buffer (or ,buffer (current-buffer)) + (elt (imap-message-get ,uid 'ENVELOPE) 2))) + +(defmacro imap-message-envelope-sender (uid &optional buffer) + `(with-current-buffer (or ,buffer (current-buffer)) + (elt (imap-message-get ,uid 'ENVELOPE) 3))) + +(defmacro imap-message-envelope-reply-to (uid &optional buffer) + `(with-current-buffer (or ,buffer (current-buffer)) + (elt (imap-message-get ,uid 'ENVELOPE) 4))) + +(defmacro imap-message-envelope-to (uid &optional buffer) + `(with-current-buffer (or ,buffer (current-buffer)) + (elt (imap-message-get ,uid 'ENVELOPE) 5))) + +(defmacro imap-message-envelope-cc (uid &optional buffer) + `(with-current-buffer (or ,buffer (current-buffer)) + (elt (imap-message-get ,uid 'ENVELOPE) 6))) + +(defmacro imap-message-envelope-bcc (uid &optional buffer) + `(with-current-buffer (or ,buffer (current-buffer)) + (elt (imap-message-get ,uid 'ENVELOPE) 7))) + +(defmacro imap-message-envelope-in-reply-to (uid &optional buffer) + `(with-current-buffer (or ,buffer (current-buffer)) + (elt (imap-message-get ,uid 'ENVELOPE) 8))) + +(defmacro imap-message-envelope-message-id (uid &optional buffer) + `(with-current-buffer (or ,buffer (current-buffer)) + (elt (imap-message-get ,uid 'ENVELOPE) 9))) + +(defmacro imap-message-body (uid &optional buffer) + `(with-current-buffer (or ,buffer (current-buffer)) + (imap-message-get ,uid 'BODY))) + +(defun imap-search (predicate &optional buffer) + (with-current-buffer (or buffer (current-buffer)) + (imap-mailbox-put 'search 'dummy) + (when (imap-ok-p (imap-send-command-wait (concat "UID SEARCH " predicate))) + (if (eq (imap-mailbox-get-1 'search imap-current-mailbox) 'dummy) + (error "Missing SEARCH response to a SEARCH command") + (imap-mailbox-get-1 'search imap-current-mailbox))))) + +(defun imap-message-flag-permanent-p (flag &optional mailbox buffer) + "Return t iff FLAG can be permanently (between IMAP sessions) saved +on articles, in MAILBOX on server in BUFFER." + (with-current-buffer (or buffer (current-buffer)) + (or (member "\\*" (imap-mailbox-get 'permanentflags mailbox)) + (member flag (imap-mailbox-get 'permanentflags mailbox))))) + +(defun imap-message-flags-set (articles flags &optional silent buffer) + (when (and articles flags) + (with-current-buffer (or buffer (current-buffer)) + (imap-ok-p (imap-send-command-wait + (concat "UID STORE " articles + " FLAGS" (if silent ".SILENT") " (" flags ")")))))) + +(defun imap-message-flags-del (articles flags &optional silent buffer) + (when (and articles flags) + (with-current-buffer (or buffer (current-buffer)) + (imap-ok-p (imap-send-command-wait + (concat "UID STORE " articles + " -FLAGS" (if silent ".SILENT") " (" flags ")")))))) + +(defun imap-message-flags-add (articles flags &optional silent buffer) + (when (and articles flags) + (with-current-buffer (or buffer (current-buffer)) + (imap-ok-p (imap-send-command-wait + (concat "UID STORE " articles + " +FLAGS" (if silent ".SILENT") " (" flags ")")))))) + +(defun imap-message-copyuid-1 (mailbox) + (if (imap-capability 'UIDPLUS) + (list (nth 0 (imap-mailbox-get-1 'copyuid mailbox)) + (string-to-number (nth 2 (imap-mailbox-get-1 'copyuid mailbox)))) + (let ((old-mailbox imap-current-mailbox) + (state imap-state) + (imap-message-data (make-vector 2 0))) + (when (imap-mailbox-examine mailbox) + (prog1 + (and (imap-fetch "*" "UID") + (list (imap-mailbox-get-1 'uidvalidity mailbox) + (apply 'max (imap-message-map + (lambda (uid prop) uid) 'UID)))) + (if old-mailbox + (imap-mailbox-select old-mailbox (eq state 'examine)) + (imap-mailbox-unselect))))))) + +(defun imap-message-copyuid (mailbox &optional buffer) + (with-current-buffer (or buffer (current-buffer)) + (imap-message-copyuid-1 (imap-utf7-decode mailbox)))) + +(defun imap-message-copy (articles mailbox + &optional dont-create no-copyuid buffer) + "Copy ARTICLES (a string message set) to MAILBOX on server in +BUFFER, creating mailbox if it doesn't exist. If dont-create is +non-nil, it will not create a mailbox. On success, return a list with +the UIDVALIDITY of the mailbox the article(s) was copied to as the +first element, rest of list contain the saved articles' UIDs." + (when articles + (with-current-buffer (or buffer (current-buffer)) + (let ((mailbox (imap-utf7-encode mailbox))) + (if (let ((cmd (concat "UID COPY " articles " \"" mailbox "\"")) + (imap-current-target-mailbox mailbox)) + (if (imap-ok-p (imap-send-command-wait cmd)) + t + (when (and (not dont-create) + (imap-mailbox-get-1 'trycreate mailbox)) + (imap-mailbox-create-1 mailbox) + (imap-ok-p (imap-send-command-wait cmd))))) + (or no-copyuid + (imap-message-copyuid-1 mailbox))))))) + +(defun imap-message-appenduid-1 (mailbox) + (if (imap-capability 'UIDPLUS) + (imap-mailbox-get-1 'appenduid mailbox) + (let ((old-mailbox imap-current-mailbox) + (state imap-state) + (imap-message-data (make-vector 2 0))) + (when (imap-mailbox-examine mailbox) + (prog1 + (and (imap-fetch "*" "UID") + (list (imap-mailbox-get-1 'uidvalidity mailbox) + (apply 'max (imap-message-map + (lambda (uid prop) uid) 'UID)))) + (if old-mailbox + (imap-mailbox-select old-mailbox (eq state 'examine)) + (imap-mailbox-unselect))))))) + +(defun imap-message-appenduid (mailbox &optional buffer) + (with-current-buffer (or buffer (current-buffer)) + (imap-message-appenduid-1 (imap-utf7-encode mailbox)))) + +(defun imap-message-append (mailbox article &optional flags date-time buffer) + "Append ARTICLE (a buffer) to MAILBOX on server in BUFFER. FLAGS and +DATE-TIME is currently not used. Return a cons holding uidvalidity of +MAILBOX and UID the newly created article got, or nil on failure." + (let ((mailbox (imap-utf7-encode mailbox))) + (with-current-buffer (or buffer (current-buffer)) + (and (let ((imap-current-target-mailbox mailbox)) + (imap-ok-p + (imap-send-command-wait + (list "APPEND \"" mailbox "\" " article)))) + (imap-message-appenduid-1 mailbox))))) + +(defun imap-body-lines (body) + "Return number of lines in article by looking at the mime bodystructure +BODY." + (if (listp body) + (if (stringp (car body)) + (cond ((and (string= (car body) "TEXT") + (numberp (nth 7 body))) + (nth 7 body)) + ((and (string= (car body) "MESSAGE") + (numberp (nth 9 body))) + (nth 9 body)) + (t 0)) + (apply '+ (mapcar 'imap-body-lines body))) + 0)) + +(defun imap-envelope-from (from) + "Return a from string line." + (and from + (concat (aref from 0) + (if (aref from 0) " <") + (aref from 2) + "@" + (aref from 3) + (if (aref from 0) ">")))) + + +;; Internal functions. + +(defun imap-send-command-1 (cmdstr) + (setq cmdstr (concat cmdstr imap-client-eol)) + (and imap-log + (with-current-buffer (get-buffer-create imap-log) + (imap-disable-multibyte) + (buffer-disable-undo) + (goto-char (point-max)) + (insert cmdstr))) + (process-send-string imap-process cmdstr)) + +(defun imap-send-command (command &optional buffer) + (with-current-buffer (or buffer (current-buffer)) + (if (not (listp command)) (setq command (list command))) + (let ((tag (setq imap-tag (1+ imap-tag))) + cmd cmdstr) + (setq cmdstr (concat (number-to-string imap-tag) " ")) + (while (setq cmd (pop command)) + (cond ((stringp cmd) + (setq cmdstr (concat cmdstr cmd))) + ((bufferp cmd) + (setq cmdstr + (concat cmdstr (format "{%d}" (with-current-buffer cmd + (buffer-size))))) + (unwind-protect + (progn + (imap-send-command-1 cmdstr) + (setq cmdstr nil) + (if (not (eq (imap-wait-for-tag tag) 'INCOMPLETE)) + (setq command nil) ;; abort command if no cont-req + (let ((process imap-process) + (stream imap-stream)) + (with-current-buffer cmd + (when (eq stream 'kerberos4) + ;; XXX modifies buffer! + (goto-char (point-min)) + (while (search-forward "\r\n" nil t) + (replace-match "\n"))) + (and imap-log + (with-current-buffer (get-buffer-create + imap-log) + (imap-disable-multibyte) + (buffer-disable-undo) + (goto-char (point-max)) + (insert-buffer-substring cmd))) + (process-send-region process (point-min) + (point-max))) + (process-send-string process imap-client-eol)))) + (setq imap-continuation nil))) + ((functionp cmd) + (imap-send-command-1 cmdstr) + (setq cmdstr nil) + (unwind-protect + (if (not (eq (imap-wait-for-tag tag) 'INCOMPLETE)) + (setq command nil) ;; abort command if no cont-req + (setq command (cons (funcall cmd imap-continuation) + command))) + (setq imap-continuation nil))) + (t + (error "Unknown command type")))) + (if cmdstr + (imap-send-command-1 cmdstr)) + tag))) + +(defun imap-wait-for-tag (tag &optional buffer) + (with-current-buffer (or buffer (current-buffer)) + (while (and (null imap-continuation) + (< imap-reached-tag tag)) + (or (and (not (memq (process-status imap-process) '(open run))) + (sit-for 1)) + (accept-process-output imap-process 1))) + (or (assq tag imap-failed-tags) + (if imap-continuation + 'INCOMPLETE + 'OK)))) + +(defun imap-sentinel (process string) + (delete-process process)) + +(defun imap-find-next-line () + "Return point at end of current line, taking into account +literals. Return nil if no complete line has arrived." + (when (re-search-forward (concat imap-server-eol "\\|{\\([0-9]+\\)}" + imap-server-eol) + nil t) + (if (match-string 1) + (if (< (point-max) (+ (point) (string-to-number (match-string 1)))) + nil + (goto-char (+ (point) (string-to-number (match-string 1)))) + (imap-find-next-line)) + (point)))) + +(defun imap-arrival-filter (proc string) + "IMAP process filter." + (with-current-buffer (process-buffer proc) + (goto-char (point-max)) + (insert string) + (and imap-log + (with-current-buffer (get-buffer-create imap-log) + (imap-disable-multibyte) + (buffer-disable-undo) + (goto-char (point-max)) + (insert string))) + (let (end) + (goto-char (point-min)) + (while (setq end (imap-find-next-line)) + (save-restriction + (narrow-to-region (point-min) end) + (delete-backward-char (length imap-server-eol)) + (goto-char (point-min)) + (unwind-protect + (cond ((eq imap-state 'initial) + (imap-parse-greeting)) + ((or (eq imap-state 'auth) + (eq imap-state 'nonauth) + (eq imap-state 'selected) + (eq imap-state 'examine)) + (imap-parse-response)) + (t + (message "Unknown state %s in arrival filter" + imap-state))) + (delete-region (point-min) (point-max)))))))) + + +;; Imap parser. + +(defsubst imap-forward () + (or (eobp) (forward-char))) + +;; number = 1*DIGIT +;; ; Unsigned 32-bit integer +;; ; (0 <= n < 4,294,967,296) + +(defsubst imap-parse-number () + (when (looking-at "[0-9]+") + (prog1 + (string-to-number (match-string 0)) + (goto-char (match-end 0))))) + +;; literal = "{" number "}" CRLF *CHAR8 +;; ; Number represents the number of CHAR8s + +(defsubst imap-parse-literal () + (when (looking-at "{\\([0-9]+\\)}\r\n") + (let ((pos (match-end 0)) + (len (string-to-number (match-string 1)))) + (if (< (point-max) (+ pos len)) + nil + (goto-char (+ pos len)) + (buffer-substring-no-properties pos (+ pos len)))))) + +;; string = quoted / literal +;; +;; quoted = DQUOTE *QUOTED-CHAR DQUOTE +;; +;; QUOTED-CHAR = / +;; "\" quoted-specials +;; +;; quoted-specials = DQUOTE / "\" +;; +;; TEXT-CHAR = + +(defsubst imap-parse-string () + (let (strstart strend) + (cond ((and (eq (char-after) ?\") + (setq strstart (point)) + (setq strend (search-forward "\"" nil t 2))) + (buffer-substring-no-properties (1+ strstart) (1- strend))) + ((eq (char-after) ?{) + (imap-parse-literal))))) + +;; nil = "NIL" + +(defsubst imap-parse-nil () + (if (looking-at "NIL") + (goto-char (match-end 0)))) + +;; nstring = string / nil + +(defsubst imap-parse-nstring () + (or (imap-parse-string) + (and (imap-parse-nil) + nil))) + +;; astring = atom / string +;; +;; atom = 1*ATOM-CHAR +;; +;; ATOM-CHAR = +;; +;; atom-specials = "(" / ")" / "{" / SP / CTL / list-wildcards / +;; quoted-specials +;; +;; list-wildcards = "%" / "*" +;; +;; quoted-specials = DQUOTE / "\" + +(defsubst imap-parse-astring () + (or (imap-parse-string) + (buffer-substring (point) + (if (re-search-forward "[(){ \r\n%*\"\\]" nil t) + (goto-char (1- (match-end 0))) + (end-of-line) + (point))))) + +;; address = "(" addr-name SP addr-adl SP addr-mailbox SP +;; addr-host ")" +;; +;; addr-adl = nstring +;; ; Holds route from [RFC-822] route-addr if +;; ; non-NIL +;; +;; addr-host = nstring +;; ; NIL indicates [RFC-822] group syntax. +;; ; Otherwise, holds [RFC-822] domain name +;; +;; addr-mailbox = nstring +;; ; NIL indicates end of [RFC-822] group; if +;; ; non-NIL and addr-host is NIL, holds +;; ; [RFC-822] group name. +;; ; Otherwise, holds [RFC-822] local-part +;; ; after removing [RFC-822] quoting +;; +;; addr-name = nstring +;; ; If non-NIL, holds phrase from [RFC-822] +;; ; mailbox after removing [RFC-822] quoting +;; + +(defsubst imap-parse-address () + (let (address) + (when (eq (char-after) ?\() + (imap-forward) + (setq address (vector (prog1 (imap-parse-nstring) + (imap-forward)) + (prog1 (imap-parse-nstring) + (imap-forward)) + (prog1 (imap-parse-nstring) + (imap-forward)) + (imap-parse-nstring))) + (when (eq (char-after) ?\)) + (imap-forward) + address)))) + +;; address-list = "(" 1*address ")" / nil +;; +;; nil = "NIL" + +(defsubst imap-parse-address-list () + (if (eq (char-after) ?\() + (let (address addresses) + (imap-forward) + (while (and (not (eq (char-after) ?\))) + ;; next line for MS Exchange bug + (progn (and (eq (char-after) ? ) (imap-forward)) t) + (setq address (imap-parse-address))) + (setq addresses (cons address addresses))) + (when (eq (char-after) ?\)) + (imap-forward) + (nreverse addresses))) + (assert (imap-parse-nil)))) + +;; mailbox = "INBOX" / astring +;; ; INBOX is case-insensitive. All case variants of +;; ; INBOX (e.g. "iNbOx") MUST be interpreted as INBOX +;; ; not as an astring. An astring which consists of +;; ; the case-insensitive sequence "I" "N" "B" "O" "X" +;; ; is considered to be INBOX and not an astring. +;; ; Refer to section 5.1 for further +;; ; semantic details of mailbox names. + +(defsubst imap-parse-mailbox () + (let ((mailbox (imap-parse-astring))) + (if (string-equal "INBOX" (upcase mailbox)) + "INBOX" + mailbox))) + +;; greeting = "*" SP (resp-cond-auth / resp-cond-bye) CRLF +;; +;; resp-cond-auth = ("OK" / "PREAUTH") SP resp-text +;; ; Authentication condition +;; +;; resp-cond-bye = "BYE" SP resp-text + +(defun imap-parse-greeting () + "Parse a IMAP greeting." + (cond ((looking-at "\\* OK ") + (setq imap-state 'nonauth)) + ((looking-at "\\* PREAUTH ") + (setq imap-state 'auth)) + ((looking-at "\\* BYE ") + (setq imap-state 'closed)))) + +;; response = *(continue-req / response-data) response-done +;; +;; continue-req = "+" SP (resp-text / base64) CRLF +;; +;; response-data = "*" SP (resp-cond-state / resp-cond-bye / +;; mailbox-data / message-data / capability-data) CRLF +;; +;; response-done = response-tagged / response-fatal +;; +;; response-fatal = "*" SP resp-cond-bye CRLF +;; ; Server closes connection immediately +;; +;; response-tagged = tag SP resp-cond-state CRLF +;; +;; resp-cond-state = ("OK" / "NO" / "BAD") SP resp-text +;; ; Status condition +;; +;; resp-cond-bye = "BYE" SP resp-text +;; +;; mailbox-data = "FLAGS" SP flag-list / +;; "LIST" SP mailbox-list / +;; "LSUB" SP mailbox-list / +;; "SEARCH" *(SP nz-number) / +;; "STATUS" SP mailbox SP "(" +;; [status-att SP number *(SP status-att SP number)] ")" / +;; number SP "EXISTS" / +;; number SP "RECENT" +;; +;; message-data = nz-number SP ("EXPUNGE" / ("FETCH" SP msg-att)) +;; +;; capability-data = "CAPABILITY" *(SP capability) SP "IMAP4rev1" +;; *(SP capability) +;; ; IMAP4rev1 servers which offer RFC 1730 +;; ; compatibility MUST list "IMAP4" as the first +;; ; capability. + +(defun imap-parse-response () + "Parse a IMAP command response." + (let (token) + (case (setq token (read (current-buffer))) + (+ (setq imap-continuation + (or (buffer-substring (min (point-max) (1+ (point))) + (point-max)) + t))) + (* (case (prog1 (setq token (read (current-buffer))) + (imap-forward)) + (OK (imap-parse-resp-text)) + (NO (imap-parse-resp-text)) + (BAD (imap-parse-resp-text)) + (BYE (imap-parse-resp-text)) + (FLAGS (imap-mailbox-put 'flags (imap-parse-flag-list))) + (LIST (imap-parse-data-list 'list)) + (LSUB (imap-parse-data-list 'lsub)) + (SEARCH (imap-mailbox-put + 'search + (read (concat "(" (buffer-substring (point) (point-max)) ")")))) + (STATUS (imap-parse-status)) + (CAPABILITY (setq imap-capability + (read (concat "(" (upcase (buffer-substring + (point) (point-max))) + ")")))) + (ACL (imap-parse-acl)) + (t (case (prog1 (read (current-buffer)) + (imap-forward)) + (EXISTS (imap-mailbox-put 'exists token)) + (RECENT (imap-mailbox-put 'recent token)) + (EXPUNGE t) + (FETCH (imap-parse-fetch token)) + (t (message "Garbage: %s" (buffer-string))))))) + (t (let (status) + (if (not (integerp token)) + (message "Garbage: %s" (buffer-string)) + (case (prog1 (setq status (read (current-buffer))) + (imap-forward)) + (OK (progn + (setq imap-reached-tag (max imap-reached-tag token)) + (imap-parse-resp-text))) + (NO (progn + (setq imap-reached-tag (max imap-reached-tag token)) + (save-excursion + (imap-parse-resp-text)) + (let (code text) + (when (eq (char-after) ?\[) + (setq code (buffer-substring (point) + (search-forward "]"))) + (imap-forward)) + (setq text (buffer-substring (point) (point-max))) + (push (list token status code text) + imap-failed-tags)))) + (BAD (progn + (setq imap-reached-tag (max imap-reached-tag token)) + (save-excursion + (imap-parse-resp-text)) + (let (code text) + (when (eq (char-after) ?\[) + (setq code (buffer-substring (point) + (search-forward "]"))) + (imap-forward)) + (setq text (buffer-substring (point) (point-max))) + (push (list token status code text) imap-failed-tags) + (error "Internal error, tag %s status %s code %s text %s" + token status code text)))) + (t (message "Garbage: %s" (buffer-string)))))))))) + +;; resp-text = ["[" resp-text-code "]" SP] text +;; +;; text = 1*TEXT-CHAR +;; +;; TEXT-CHAR = + +(defun imap-parse-resp-text () + (imap-parse-resp-text-code)) + +;; resp-text-code = "ALERT" / +;; "BADCHARSET [SP "(" astring *(SP astring) ")" ] / +;; "NEWNAME" SP string SP string / +;; "PARSE" / +;; "PERMANENTFLAGS" SP "(" +;; [flag-perm *(SP flag-perm)] ")" / +;; "READ-ONLY" / +;; "READ-WRITE" / +;; "TRYCREATE" / +;; "UIDNEXT" SP nz-number / +;; "UIDVALIDITY" SP nz-number / +;; "UNSEEN" SP nz-number / +;; resp-text-atom [SP 1*] +;; +;; resp_code_apnd = "APPENDUID" SPACE nz_number SPACE uniqueid +;; +;; resp_code_copy = "COPYUID" SPACE nz_number SPACE set SPACE set +;; +;; set = sequence-num / (sequence-num ":" sequence-num) / +;; (set "," set) +;; ; Identifies a set of messages. For message +;; ; sequence numbers, these are consecutive +;; ; numbers from 1 to the number of messages in +;; ; the mailbox +;; ; Comma delimits individual numbers, colon +;; ; delimits between two numbers inclusive. +;; ; Example: 2,4:7,9,12:* is 2,4,5,6,7,9,12,13, +;; ; 14,15 for a mailbox with 15 messages. +;; +;; sequence-num = nz-number / "*" +;; ; * is the largest number in use. For message +;; ; sequence numbers, it is the number of messages +;; ; in the mailbox. For unique identifiers, it is +;; ; the unique identifier of the last message in +;; ; the mailbox. +;; +;; flag-perm = flag / "\*" +;; +;; flag = "\Answered" / "\Flagged" / "\Deleted" / +;; "\Seen" / "\Draft" / flag-keyword / flag-extension +;; ; Does not include "\Recent" +;; +;; flag-extension = "\" atom +;; ; Future expansion. Client implementations +;; ; MUST accept flag-extension flags. Server +;; ; implementations MUST NOT generate +;; ; flag-extension flags except as defined by +;; ; future standard or standards-track +;; ; revisions of this specification. +;; +;; flag-keyword = atom +;; +;; resp-text-atom = 1* + +(defun imap-parse-resp-text-code () + (when (eq (char-after) ?\[) + (imap-forward) + (cond ((search-forward "PERMANENTFLAGS " nil t) + (imap-mailbox-put 'permanentflags (imap-parse-flag-list))) + ((search-forward "UIDNEXT " nil t) + (imap-mailbox-put 'uidnext (read (current-buffer)))) + ((search-forward "UNSEEN " nil t) + (imap-mailbox-put 'unseen (read (current-buffer)))) + ((looking-at "UIDVALIDITY \\([0-9]+\\)") + (imap-mailbox-put 'uidvalidity (match-string 1))) + ((search-forward "READ-ONLY" nil t) + (imap-mailbox-put 'read-only t)) + ((search-forward "NEWNAME " nil t) + (let (oldname newname) + (setq oldname (imap-parse-string)) + (imap-forward) + (setq newname (imap-parse-string)) + (imap-mailbox-put 'newname newname oldname))) + ((search-forward "TRYCREATE" nil t) + (imap-mailbox-put 'trycreate t imap-current-target-mailbox)) + ((looking-at "APPENDUID \\([0-9]+\\) \\([0-9]+\\)") + (imap-mailbox-put 'appenduid + (list (match-string 1) + (string-to-number (match-string 2))) + imap-current-target-mailbox)) + ((looking-at "COPYUID \\([0-9]+\\) \\([0-9,:]+\\) \\([0-9,:]+\\)") + (imap-mailbox-put 'copyuid (list (match-string 1) + (match-string 2) + (match-string 3)) + imap-current-target-mailbox)) + ((search-forward "ALERT] " nil t) + (message "Imap server %s information: %s" imap-server + (buffer-substring (point) (point-max))))))) + +;; mailbox-list = "(" [mbx-list-flags] ")" SP +;; (DQUOTE QUOTED-CHAR DQUOTE / nil) SP mailbox +;; +;; mbx-list-flags = *(mbx-list-oflag SP) mbx-list-sflag +;; *(SP mbx-list-oflag) / +;; mbx-list-oflag *(SP mbx-list-oflag) +;; +;; mbx-list-oflag = "\Noinferiors" / flag-extension +;; ; Other flags; multiple possible per LIST response +;; +;; mbx-list-sflag = "\Noselect" / "\Marked" / "\Unmarked" +;; ; Selectability flags; only one per LIST response +;; +;; QUOTED-CHAR = / +;; "\" quoted-specials +;; +;; quoted-specials = DQUOTE / "\" + +(defun imap-parse-data-list (type) + (let (flags delimiter mailbox) + (setq flags (imap-parse-flag-list)) + (when (looking-at " NIL\\| \"\\\\?\\(.\\)\"") + (setq delimiter (match-string 1)) + (goto-char (1+ (match-end 0))) + (when (setq mailbox (imap-parse-mailbox)) + (imap-mailbox-put type t mailbox) + (imap-mailbox-put 'list-flags flags mailbox) + (imap-mailbox-put 'delimiter delimiter mailbox))))) + +;; msg_att ::= "(" 1#("ENVELOPE" SPACE envelope / +;; "FLAGS" SPACE "(" #(flag / "\Recent") ")" / +;; "INTERNALDATE" SPACE date_time / +;; "RFC822" [".HEADER" / ".TEXT"] SPACE nstring / +;; "RFC822.SIZE" SPACE number / +;; "BODY" ["STRUCTURE"] SPACE body / +;; "BODY" section ["<" number ">"] SPACE nstring / +;; "UID" SPACE uniqueid) ")" +;; +;; date_time ::= <"> date_day_fixed "-" date_month "-" date_year +;; SPACE time SPACE zone <"> +;; +;; section ::= "[" [section_text / (nz_number *["." nz_number] +;; ["." (section_text / "MIME")])] "]" +;; +;; section_text ::= "HEADER" / "HEADER.FIELDS" [".NOT"] +;; SPACE header_list / "TEXT" +;; +;; header_fld_name ::= astring +;; +;; header_list ::= "(" 1#header_fld_name ")" + +(defsubst imap-parse-header-list () + (when (eq (char-after) ?\() + (let (strlist) + (while (not (eq (char-after) ?\))) + (imap-forward) + (push (imap-parse-astring) strlist)) + (imap-forward) + (nreverse strlist)))) + +(defsubst imap-parse-fetch-body-section () + (let ((section + (buffer-substring (point) (1- (re-search-forward "[] ]" nil t))))) + (if (eq (char-before) ? ) + (prog1 + (mapconcat 'identity (cons section (imap-parse-header-list)) " ") + (search-forward "]" nil t)) + section))) + +(defun imap-parse-fetch (response) + (when (eq (char-after) ?\() + (let (uid flags envelope internaldate rfc822 rfc822header rfc822text + rfc822size body bodydetail bodystructure) + (while (not (eq (char-after) ?\))) + (imap-forward) + (let ((token (read (current-buffer)))) + (imap-forward) + (cond ((eq token 'UID) + (setq uid (ignore-errors (read (current-buffer))))) + ((eq token 'FLAGS) + (setq flags (imap-parse-flag-list))) + ((eq token 'ENVELOPE) + (setq envelope (imap-parse-envelope))) + ((eq token 'INTERNALDATE) + (setq internaldate (imap-parse-string))) + ((eq token 'RFC822) + (setq rfc822 (imap-parse-nstring))) + ((eq token 'RFC822.HEADER) + (setq rfc822header (imap-parse-nstring))) + ((eq token 'RFC822.TEXT) + (setq rfc822text (imap-parse-nstring))) + ((eq token 'RFC822.SIZE) + (setq rfc822size (read (current-buffer)))) + ((eq token 'BODY) + (if (eq (char-before) ?\[) + (push (list + (upcase (imap-parse-fetch-body-section)) + (and (eq (char-after) ?<) + (buffer-substring (1+ (point)) + (search-forward ">" nil t))) + (progn (imap-forward) + (imap-parse-nstring))) + bodydetail) + (setq body (imap-parse-body)))) + ((eq token 'BODYSTRUCTURE) + (setq bodystructure (imap-parse-body)))))) + (when uid + (setq imap-current-message uid) + (imap-message-put uid 'UID uid) + (and flags (imap-message-put uid 'FLAGS flags)) + (and envelope (imap-message-put uid 'ENVELOPE envelope)) + (and internaldate (imap-message-put uid 'INTERNALDATE internaldate)) + (and rfc822 (imap-message-put uid 'RFC822 rfc822)) + (and rfc822header (imap-message-put uid 'RFC822.HEADER rfc822header)) + (and rfc822text (imap-message-put uid 'RFC822.TEXT rfc822text)) + (and rfc822size (imap-message-put uid 'RFC822.SIZE rfc822size)) + (and body (imap-message-put uid 'BODY body)) + (and bodydetail (imap-message-put uid 'BODYDETAIL bodydetail)) + (and bodystructure (imap-message-put uid 'BODYSTRUCTURE bodystructure)) + (run-hooks 'imap-fetch-data-hook))))) + +;; mailbox-data = ... +;; "STATUS" SP mailbox SP "(" +;; [status-att SP number +;; *(SP status-att SP number)] ")" +;; ... +;; +;; status-att = "MESSAGES" / "RECENT" / "UIDNEXT" / "UIDVALIDITY" / +;; "UNSEEN" + +(defun imap-parse-status () + (let ((mailbox (imap-parse-mailbox))) + (when (and mailbox (search-forward "(" nil t)) + (while (not (eq (char-after) ?\))) + (let ((token (read (current-buffer)))) + (cond ((eq token 'MESSAGES) + (imap-mailbox-put 'messages (read (current-buffer)) mailbox)) + ((eq token 'RECENT) + (imap-mailbox-put 'recent (read (current-buffer)) mailbox)) + ((eq token 'UIDNEXT) + (imap-mailbox-put 'uidnext (read (current-buffer)) mailbox)) + ((eq token 'UIDVALIDITY) + (and (looking-at " \\([0-9]+\\)") + (imap-mailbox-put 'uidvalidity (match-string 1) mailbox) + (goto-char (match-end 1)))) + ((eq token 'UNSEEN) + (imap-mailbox-put 'unseen (read (current-buffer)) mailbox)) + (t + (message "Unknown status data %s in mailbox %s ignored" + token mailbox)))))))) + +;; acl_data ::= "ACL" SPACE mailbox *(SPACE identifier SPACE +;; rights) +;; +;; identifier ::= astring +;; +;; rights ::= astring + +(defun imap-parse-acl () + (let ((mailbox (imap-parse-mailbox)) + identifier rights acl) + (while (eq (char-after) ?\ ) + (imap-forward) + (setq identifier (imap-parse-astring)) + (imap-forward) + (setq rights (imap-parse-astring)) + (setq acl (append acl (list (cons identifier rights))))) + (imap-mailbox-put 'acl acl mailbox))) + +;; flag-list = "(" [flag *(SP flag)] ")" +;; +;; flag = "\Answered" / "\Flagged" / "\Deleted" / +;; "\Seen" / "\Draft" / flag-keyword / flag-extension +;; ; Does not include "\Recent" +;; +;; flag-keyword = atom +;; +;; flag-extension = "\" atom +;; ; Future expansion. Client implementations +;; ; MUST accept flag-extension flags. Server +;; ; implementations MUST NOT generate +;; ; flag-extension flags except as defined by +;; ; future standard or standards-track +;; ; revisions of this specification. + +(defun imap-parse-flag-list () + (let ((str (buffer-substring-no-properties + (point) (search-forward ")" nil t))) + pos) + (while (setq pos (string-match "\\\\" str (and pos (+ 2 pos)))) + (setq str (replace-match "\\\\" nil t str))) + (mapcar 'symbol-name (read str)))) + +;; envelope = "(" env-date SP env-subject SP env-from SP env-sender SP +;; env-reply-to SP env-to SP env-cc SP env-bcc SP +;; env-in-reply-to SP env-message-id ")" +;; +;; env-bcc = "(" 1*address ")" / nil +;; +;; env-cc = "(" 1*address ")" / nil +;; +;; env-date = nstring +;; +;; env-from = "(" 1*address ")" / nil +;; +;; env-in-reply-to = nstring +;; +;; env-message-id = nstring +;; +;; env-reply-to = "(" 1*address ")" / nil +;; +;; env-sender = "(" 1*address ")" / nil +;; +;; env-subject = nstring +;; +;; env-to = "(" 1*address ")" / nil + +(defun imap-parse-envelope () + (when (eq (char-after) ?\() + (imap-forward) + (vector (prog1 (imap-parse-nstring) ;; date + (imap-forward)) + (prog1 (imap-parse-nstring) ;; subject + (imap-forward)) + (prog1 (imap-parse-address-list) ;; from + (imap-forward)) + (prog1 (imap-parse-address-list) ;; sender + (imap-forward)) + (prog1 (imap-parse-address-list) ;; reply-to + (imap-forward)) + (prog1 (imap-parse-address-list) ;; to + (imap-forward)) + (prog1 (imap-parse-address-list) ;; cc + (imap-forward)) + (prog1 (imap-parse-address-list) ;; bcc + (imap-forward)) + (prog1 (imap-parse-nstring) ;; in-reply-to + (imap-forward)) + (prog1 (imap-parse-nstring) ;; message-id + (imap-forward))))) + +;; body-fld-param = "(" string SP string *(SP string SP string) ")" / nil + +(defsubst imap-parse-string-list () + (cond ((eq (char-after) ?\() ;; body-fld-param + (let (strlist str) + (imap-forward) + (while (setq str (imap-parse-string)) + (push str strlist) + (imap-forward)) + (nreverse strlist))) + ((imap-parse-nil) + nil))) + +;; body-extension = nstring / number / +;; "(" body-extension *(SP body-extension) ")" +;; ; Future expansion. Client implementations +;; ; MUST accept body-extension fields. Server +;; ; implementations MUST NOT generate +;; ; body-extension fields except as defined by +;; ; future standard or standards-track +;; ; revisions of this specification. + +(defun imap-parse-body-extension () + (if (eq (char-after) ?\() + (let (b-e) + (imap-forward) + (push (imap-parse-body-extension) b-e) + (while (eq (char-after) ?\ ) + (imap-forward) + (push (imap-parse-body-extension) b-e)) + (assert (eq (char-after) ?\))) + (imap-forward) + (nreverse b-e)) + (or (imap-parse-number) + (imap-parse-nstring)))) + +;; body-ext-1part = body-fld-md5 [SP body-fld-dsp [SP body-fld-lang +;; *(SP body-extension)]] +;; ; MUST NOT be returned on non-extensible +;; ; "BODY" fetch +;; +;; body-ext-mpart = body-fld-param [SP body-fld-dsp [SP body-fld-lang +;; *(SP body-extension)]] +;; ; MUST NOT be returned on non-extensible +;; ; "BODY" fetch + +(defsubst imap-parse-body-ext () + (let (ext) + (when (eq (char-after) ?\ ) ;; body-fld-dsp + (imap-forward) + (let (dsp) + (if (eq (char-after) ?\() + (progn + (imap-forward) + (push (imap-parse-string) dsp) + (imap-forward) + (push (imap-parse-string-list) dsp) + (imap-forward)) + (assert (imap-parse-nil))) + (push (nreverse dsp) ext)) + (when (eq (char-after) ?\ ) ;; body-fld-lang + (imap-forward) + (if (eq (char-after) ?\() + (push (imap-parse-string-list) ext) + (push (imap-parse-nstring) ext)) + (while (eq (char-after) ?\ ) ;; body-extension + (imap-forward) + (setq ext (append (imap-parse-body-extension) ext))))) + ext)) + +;; body = "(" body-type-1part / body-type-mpart ")" +;; +;; body-ext-1part = body-fld-md5 [SP body-fld-dsp [SP body-fld-lang +;; *(SP body-extension)]] +;; ; MUST NOT be returned on non-extensible +;; ; "BODY" fetch +;; +;; body-ext-mpart = body-fld-param [SP body-fld-dsp [SP body-fld-lang +;; *(SP body-extension)]] +;; ; MUST NOT be returned on non-extensible +;; ; "BODY" fetch +;; +;; body-fields = body-fld-param SP body-fld-id SP body-fld-desc SP +;; body-fld-enc SP body-fld-octets +;; +;; body-fld-desc = nstring +;; +;; body-fld-dsp = "(" string SP body-fld-param ")" / nil +;; +;; body-fld-enc = (DQUOTE ("7BIT" / "8BIT" / "BINARY" / "BASE64"/ +;; "QUOTED-PRINTABLE") DQUOTE) / string +;; +;; body-fld-id = nstring +;; +;; body-fld-lang = nstring / "(" string *(SP string) ")" +;; +;; body-fld-lines = number +;; +;; body-fld-md5 = nstring +;; +;; body-fld-octets = number +;; +;; body-fld-param = "(" string SP string *(SP string SP string) ")" / nil +;; +;; body-type-1part = (body-type-basic / body-type-msg / body-type-text) +;; [SP body-ext-1part] +;; +;; body-type-basic = media-basic SP body-fields +;; ; MESSAGE subtype MUST NOT be "RFC822" +;; +;; body-type-msg = media-message SP body-fields SP envelope +;; SP body SP body-fld-lines +;; +;; body-type-text = media-text SP body-fields SP body-fld-lines +;; +;; body-type-mpart = 1*body SP media-subtype +;; [SP body-ext-mpart] +;; +;; media-basic = ((DQUOTE ("APPLICATION" / "AUDIO" / "IMAGE" / +;; "MESSAGE" / "VIDEO") DQUOTE) / string) SP media-subtype +;; ; Defined in [MIME-IMT] +;; +;; media-message = DQUOTE "MESSAGE" DQUOTE SP DQUOTE "RFC822" DQUOTE +;; ; Defined in [MIME-IMT] +;; +;; media-subtype = string +;; ; Defined in [MIME-IMT] +;; +;; media-text = DQUOTE "TEXT" DQUOTE SP media-subtype +;; ; Defined in [MIME-IMT] + +(defun imap-parse-body () + (let (body) + (when (eq (char-after) ?\() + (imap-forward) + (if (eq (char-after) ?\() + (let (subbody) + (while (and (eq (char-after) ?\() + (setq subbody (imap-parse-body))) + (push subbody body)) + (imap-forward) + (push (imap-parse-string) body) ;; media-subtype + (when (eq (char-after) ?\ ) ;; body-ext-mpart: + (imap-forward) + (if (eq (char-after) ?\() ;; body-fld-param + (push (imap-parse-string-list) body) + (push (and (imap-parse-nil) nil) body)) + (setq body + (append (imap-parse-body-ext) body))) ;; body-ext-... + (assert (eq (char-after) ?\))) + (imap-forward) + (nreverse body)) + + (push (imap-parse-string) body) ;; media-type + (imap-forward) + (push (imap-parse-string) body) ;; media-subtype + (imap-forward) + ;; next line for Sun SIMS bug + (and (eq (char-after) ? ) (imap-forward)) + (if (eq (char-after) ?\() ;; body-fld-param + (push (imap-parse-string-list) body) + (push (and (imap-parse-nil) nil) body)) + (imap-forward) + (push (imap-parse-nstring) body) ;; body-fld-id + (imap-forward) + (push (imap-parse-nstring) body) ;; body-fld-desc + (imap-forward) + (push (imap-parse-string) body) ;; body-fld-enc + (imap-forward) + (push (imap-parse-number) body) ;; body-fld-octets + + ;; ok, we're done parsing the required parts, what comes now is one + ;; of three things: + ;; + ;; envelope (then we're parsing body-type-msg) + ;; body-fld-lines (then we're parsing body-type-text) + ;; body-ext-1part (then we're parsing body-type-basic) + ;; + ;; the problem is that the two first are in turn optionally followed + ;; by the third. So we parse the first two here (if there are any)... + + (when (eq (char-after) ?\ ) + (imap-forward) + (let (lines) + (cond ((eq (char-after) ?\() ;; body-type-msg: + (push (imap-parse-envelope) body) ;; envelope + (imap-forward) + (push (imap-parse-body) body) ;; body + (imap-forward) + (push (imap-parse-number) body)) ;; body-fld-lines + ((setq lines (imap-parse-number)) ;; body-type-text: + (push lines body)) ;; body-fld-lines + (t + (backward-char))))) ;; no match... + + ;; ...and then parse the third one here... + + (when (eq (char-after) ?\ ) ;; body-ext-1part: + (imap-forward) + (push (imap-parse-nstring) body) ;; body-fld-md5 + (setq body (append (imap-parse-body-ext) body)));; body-ext-1part.. + + (assert (eq (char-after) ?\))) + (imap-forward) + (nreverse body))))) + +(when imap-debug ; (untrace-all) + (require 'trace) + (buffer-disable-undo (get-buffer-create imap-debug)) + (mapc (lambda (f) (trace-function-background f imap-debug)) + '( +imap-read-passwd +imap-utf7-encode +imap-utf7-decode +imap-error-text +imap-kerberos4s-p +imap-kerberos4-open +imap-ssl-p +imap-ssl-open-2 +imap-ssl-open-1 +imap-ssl-open +imap-network-p +imap-network-open +imap-interactive-login +imap-kerberos4a-p +imap-kerberos4-auth +imap-cram-md5-p +imap-cram-md5-auth +imap-login-p +imap-login-auth +imap-anonymous-p +imap-anonymous-auth +imap-open-1 +imap-open +imap-opened +imap-authenticate +imap-close +imap-capability +imap-namespace +imap-send-command-wait +imap-mailbox-put +imap-mailbox-get +imap-mailbox-map-1 +imap-mailbox-map +imap-current-mailbox +imap-current-mailbox-p-1 +imap-current-mailbox-p +imap-mailbox-select-1 +imap-mailbox-select +imap-mailbox-examine +imap-mailbox-unselect +imap-mailbox-expunge +imap-mailbox-close +imap-mailbox-create-1 +imap-mailbox-create +imap-mailbox-delete +imap-mailbox-rename +imap-mailbox-lsub +imap-mailbox-list +imap-mailbox-subscribe +imap-mailbox-unsubscribe +imap-mailbox-status +imap-mailbox-acl-get +imap-mailbox-acl-set +imap-mailbox-acl-delete +imap-current-message +imap-list-to-message-set +imap-fetch-asynch +imap-fetch +imap-message-put +imap-message-get +imap-message-map +imap-search +imap-message-flag-permanent-p +imap-message-flags-set +imap-message-flags-del +imap-message-flags-add +imap-message-copyuid-1 +imap-message-copyuid +imap-message-copy +imap-message-appenduid-1 +imap-message-appenduid +imap-message-append +imap-body-lines +imap-envelope-from +imap-send-command-1 +imap-send-command +imap-wait-for-tag +imap-sentinel +imap-find-next-line +imap-arrival-filter +imap-parse-greeting +imap-parse-response +imap-parse-resp-text +imap-parse-resp-text-code +imap-parse-data-list +imap-parse-fetch +imap-parse-status +imap-parse-acl +imap-parse-flag-list +imap-parse-envelope +imap-parse-body-extension +imap-parse-body + ))) + +(provide 'imap) + +;;; imap.el ends here -- 2.25.1