/
twittering-mode.el
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twittering-mode.el
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;;; -*- indent-tabs-mode: t; tab-width: 8 -*-
;;;
;;; twittering-mode.el --- Major mode for Twitter
;; Copyright (C) 2007, 2009, 2010 Yuto Hayamizu.
;; 2008 Tsuyoshi CHO
;; Author: Y. Hayamizu <y.hayamizu@gmail.com>
;; Tsuyoshi CHO <Tsuyoshi.CHO+develop@Gmail.com>
;; Alberto Garcia <agarcia@igalia.com>
;; Created: Sep 4, 2007
;; Version: HEAD
;; Identity: $Id$
;; Keywords: twitter web
;; URL: http://twmode.sf.net/
;; This file 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.
;; This file 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:
;; twittering-mode.el is a major mode for Twitter.
;; You can check friends timeline, and update your status on Emacs.
;;; Feature Request:
;; URL : http://twitter.com/d00dle/statuses/577876082
;; * Status Input from Popup buffer and C-cC-c to POST.
;; URL : http://code.nanigac.com/source/view/419
;; * update status for region
;;; Code:
(eval-when-compile (require 'cl))
(require 'xml)
(require 'parse-time)
(when (> 22 emacs-major-version)
(setq load-path
(append (mapcar (lambda (dir)
(expand-file-name
dir
(if load-file-name
(or (file-name-directory load-file-name)
".")
".")))
'("url-emacs21" "emacs21"))
load-path))
(and (require 'un-define nil t)
;; the explicitly require 'unicode to update a workaround with
;; navi2ch. see a comment of `twittering-ucs-to-char' for more
;; details.
(require 'unicode nil t)))
(require 'url)
(defconst twittering-mode-version "HEAD")
(defconst twittering-mode-identity "$Id$")
(defvar twittering-api-host "api.twitter.com")
(defvar twittering-api-search-host "search.twitter.com")
(defvar twittering-web-host "twitter.com")
(defvar twittering-oauth-request-token-url
"https://api.twitter.com/oauth/request_token")
(defvar twittering-oauth-authorization-url-base
"https://api.twitter.com/oauth/authorize?oauth_token=")
(defvar twittering-oauth-access-token-url
"https://api.twitter.com/oauth/access_token")
(defun twittering-mode-version ()
"Display a message for twittering-mode version."
(interactive)
(let ((version-string
(format "twittering-mode-v%s" twittering-mode-version)))
(if (interactive-p)
(message "%s" version-string)
version-string)))
(defvar twittering-auth-method 'oauth
"*Authentication method for `twittering-mode'.
The symbol `basic' means Basic Authentication. The symbol `oauth' means
OAuth Authentication. OAuth Authentication requires
`twittering-oauth-consumer-key' and `twittering-oauth-consumer-secret'.
Additionally, it requires an external command `curl' or another command
included in `tls-program', which may be `openssl' or `gnutls-cli', for SSL.")
(defvar twittering-oauth-use-ssl t
"*Whether to use SSL on authentication via OAuth. Twitter requires SSL
on authorization via OAuth.")
(defvar twittering-oauth-consumer-key nil)
(defvar twittering-oauth-consumer-secret nil)
(defvar twittering-oauth-access-token-alist nil)
(defconst twittering-max-number-of-tweets-on-retrieval 200
"The maximum number of `twittering-number-of-tweets-on-retrieval'.")
(defvar twittering-number-of-tweets-on-retrieval 20
"*The number of tweets which will be retrieved in one request.
The upper limit is `twittering-max-number-of-tweets-on-retrieval'.")
(defvar twittering-tinyurl-service 'tinyurl
"The service to use. One of 'tinyurl' or 'toly'.")
(defvar twittering-tinyurl-services-map
'((tinyurl . "http://tinyurl.com/api-create.php?url=")
(toly . "http://to.ly/api.php?longurl="))
"Alist of tinyfy services.")
(defvar twittering-mode-map (make-sparse-keymap))
(defvar twittering-tweet-history nil)
(defvar twittering-user-history nil)
(defvar twittering-timeline-history nil)
(defvar twittering-hashtag-history nil)
(defvar twittering-search-history nil)
(defvar twittering-current-hashtag nil
"A hash tag string currently set. You can set it by calling
`twittering-set-current-hashtag'.")
(defvar twittering-timer nil
"Timer object for timeline refreshing will be stored here.
DO NOT SET VALUE MANUALLY.")
(defvar twittering-timer-interval 90
"The interval of auto reloading. You should use 60 or more
seconds for this variable because the number of API call is
limited by the hour.")
(defvar twittering-timer-for-redisplaying nil
"Timer object for timeline redisplay statuses will be stored here.
DO NOT SET VALUE MANUALLY.")
(defvar twittering-timer-interval-for-redisplaying 17
"The interval of auto redisplaying statuses.")
(defvar twittering-username nil
"*An username of your Twitter account.")
(defvar twittering-password nil
"*A password of your Twitter account. Leave it blank is the
recommended way because writing a password in .emacs file is so
dangerous.")
(defvar twittering-initial-timeline-spec-string ":home"
"*The initial timeline spec string. If the value of the variable is a
list of timeline spec strings, the timelines are rendered on their own
buffers.")
(defvar twittering-timeline-spec nil
"The timeline spec for the current buffer.")
(defvar twittering-timeline-spec-string ""
"The timeline spec string for the current buffer.")
(defvar twittering-timeline-spec-alias nil
"*Alist for aliases of timeline spec.
Each element is (NAME . SPEC-STRING), where NAME is a string and
SPEC-STRING is a string or a function that returns a timeline spec string.
The alias can be referred as \"$NAME\" or \"$NAME(ARG)\" in timeline spec
string. If SPEC-STRING is a string, ARG is simply ignored.
If SPEC-STRING is a function, it is called with a string argument.
For the style \"$NAME\", the function is called with nil.
For the style \"$NAME(ARG)\", the function is called with a string ARG.
For example, if you specify
'((\"FRIENDS\" . \"(USER1+USER2+USER3)\")
(\"to_me\" . \"(:mentions+:retweets_of_me+:direct_messages)\")
(\"related-to\" .
,(lambda (username)
(if username
(format \":search/to:%s OR from:%s OR @%s/\"
username username username)
\":home\")))),
then you can use \"$to_me\" as
\"(:mentions+:retweets_of_me+:direct_messages)\".")
(defvar twittering-current-timeline-spec-string nil
"The current timeline spec string. This variable should not be referred
directly. Use `twittering-current-timeline-spec-string' or
`twittering-current-timeline-spec'.")
(defvar twittering-list-index-retrieved nil)
(defvar twittering-process-info-alist nil
"Alist of active process and timeline spec retrieved by the process.")
(defvar twittering-server-info-alist nil
"Alist of server information.")
(defvar twittering-new-tweets-count 0
"Number of new tweets when `twittering-new-tweets-hook' is run.")
(defvar twittering-new-tweets-spec nil
"Timeline spec, which new tweets belong to, when
`twittering-new-tweets-hook' is run.")
(defvar twittering-new-tweets-statuses nil
"New tweet status messages, when
`twittering-new-tweets-hook' is run.")
(defvar twittering-new-tweets-hook nil
"*Hook run when new tweets are received.
You can read `twittering-new-tweets-count' or `twittering-new-tweets-spec'
to get the number of new tweets received when this hook is run.")
(defvar twittering-active-mode nil
"Non-nil if new statuses should be retrieved periodically.
Do not modify this variable directly. Use `twittering-activate-buffer',
`twittering-deactivate-buffer', `twittering-toggle-activate-buffer' or
`twittering-set-active-flag-for-buffer'.")
(defvar twittering-scroll-mode nil)
(defvar twittering-jojo-mode nil)
(defvar twittering-reverse-mode nil
"*Non-nil means tweets are aligned in reverse order of `http://twitter.com/'.")
(defvar twittering-display-remaining nil
"*If non-nil, display remaining of rate limit on the mode line.")
(defvar twittering-status-format "%i %s, %@:\n%FILL[ ]{%T // from %f%L%r%R}\n "
"Format string for rendering statuses.
Ex. \"%i %s, %@:\\n%FILL{ %T // from %f%L%r%R}\n \"
Items:
%s - screen_name
%S - name
%i - profile_image
%d - description
%l - location
%L - \" [location]\"
%r - \" sent to user\" (use on direct_messages{,_sent})
%r - \" in reply to user\" (use on other standard timeline)
%R - \" (retweeted by user)\"
%u - url
%j - user.id
%p - protected?
%c - created_at (raw UTC string)
%C{time-format-str} - created_at (formatted with time-format-str)
%@ - X seconds ago
%T - raw text
%t - text filled as one paragraph
%' - truncated
%FACE[face-name]{...} - strings decorated with the specified face.
%FILL[prefix]{...} - strings filled as a paragraph. The prefix is optional.
You can use any other specifiers in braces.
%FOLD[prefix]{...} - strings folded within the frame width.
The prefix is optional. This keeps newlines.
You can use any other specifiers in braces.
%f - source
%# - id
")
(defvar twittering-retweet-format "RT: %t (via @%s)"
"Format string for retweet.
Items:
%s - screen_name
%t - text
%% - %
")
(defvar twittering-fill-column nil
"*The fill-column used for \"%FILL{...}\" in `twittering-status-format'.
If nil, the fill-column is automatically calculated.")
(defvar twittering-show-replied-tweets t
"*The number of replied tweets which will be showed in one tweet.
If the value is not a number and is non-nil, show all replied tweets
which is already fetched.
If the value is nil, doesn't show replied tweets.")
(defvar twittering-default-show-replied-tweets nil
"*The number of default replied tweets which will be showed in one tweet.
This value will be used only when showing new tweets.
See `twittering-show-replied-tweets' for more details.")
(defvar twittering-use-show-minibuffer-length t
"*Show current length of minibuffer if this variable is non-nil.
We suggest that you should set to nil to disable the showing function
when it conflict with your input method (such as AquaSKK, etc.)")
(defvar twittering-notify-successful-http-get t)
(defvar twittering-use-ssl t
"Use SSL connection if this variable is non-nil.
SSL connections use 'curl' command as a backend.")
(defvar twittering-allow-insecure-server-cert nil
"*If non-nil, twittering-mode allows insecure server certificates.")
(defvar twittering-curl-program nil
"Cache a result of `twittering-find-curl-program'.
DO NOT SET VALUE MANUALLY.")
(defvar twittering-curl-program-https-capability nil
"Cache a result of `twittering-start-http-session-curl-https-p'.
DO NOT SET VALUE MANUALLY.")
(defvar twittering-tls-program nil
"*List of strings containing commands to start TLS stream to a host.
Each entry in the list is tried until a connection is successful.
%h is replaced with server hostname, %p with port to connect to.
Also see `tls-program'.
If nil, this is initialized with a list of valied entries extracted from
`tls-program'.")
(defvar twittering-connection-type-order '(curl native))
"*A list of connection methods in the preferred order."
(defvar twittering-connection-type-table
'((native (check . t)
(https . twittering-start-http-session-native-tls-p)
(start . twittering-start-http-session-native)
(oauth-get-token . native)
(pre-process-buffer . twittering-pre-process-buffer-native))
(curl (check . twittering-start-http-session-curl-p)
(https . twittering-start-http-session-curl-https-p)
(start . twittering-start-http-session-curl)
(oauth-get-token . curl)
(pre-process-buffer . twittering-pre-process-buffer-curl)))
"A list of alist of connection methods.")
(defvar twittering-format-status-function-source ""
"The status format string that has generated the current
`twittering-format-status-function'.")
(defvar twittering-format-status-function nil
"The formating function generated from `twittering-format-status-function-source'.")
(defvar twittering-timeline-data-table (make-hash-table :test 'equal))
(defvar twittering-username-face 'twittering-username-face)
(defvar twittering-uri-face 'twittering-uri-face)
(defvar twittering-use-native-retweet nil
"Post retweets using native retweets if this variable is non-nil.")
(defvar twittering-update-status-function
'twittering-update-status-from-pop-up-buffer
"The function used to posting a tweet. It takes two arguments:
the first argument INIT-STR is initial text to be edited and the
second argument REPLY-TO-ID is a user ID of a tweet to which you
are going to reply.
Twittering-mode provides two functions for updating status:
* `twittering-update-status-from-minibuffer': edit tweets in minibuffer
* `twittering-update-status-from-pop-up-buffer': edit tweets in pop-up buffer")
(defvar twittering-request-confirmation-on-posting nil
"*If *non-nil*, confirmation will be requested on posting a tweet edited in
pop-up buffer.")
(defvar twittering-use-master-password nil
"*Wheter to store private information encrypted with a master password.")
(defvar twittering-private-info-file
(expand-file-name "~/.twittering-mode.gpg")
"*File for storing encrypted private information when
`twittering-use-master-password' is non-nil.")
(defvar twittering-variables-stored-with-encryption
'(twittering-oauth-access-token-alist))
(defvar twittering-api-prefix "1/")
(defvar twittering-search-api-method "search")
(defvar twittering-web-path-prefix "")
(defvar twittering-service-method 'twitter
"*Service method for `twittering-mode'.
The symbol `twitter' means Twitter Service. The symbol `statusnet' means
StatusNet Service.")
(defvar twittering-service-method-table
'((twitter (status-url . twittering-get-status-url-twitter)
(search-url . twittering-get-search-url-twitter))
(statusnet (status-url . twittering-get-status-url-statusnet)
(search-url . twittering-get-search-url-statusnet)))
"A list of alist of service methods.")
;;;
;;; Abstract layer for Twitter API
;;;
(defun twittering-api-path (&rest params)
(mapconcat 'identity `(,twittering-api-prefix ,@params) ""))
(defun twittering-call-api (command args-alist &optional noninteractive)
"Call Twitter API and return the process object for the request."
(cond
((eq command 'retrieve-timeline)
;; Retrieve a timeline.
(let* ((spec (cdr (assq 'timeline-spec args-alist)))
(spec-string (cdr (assq 'timeline-spec-string args-alist)))
(spec-type (car-safe spec))
(number (cdr (assq 'number args-alist)))
(number-str (number-to-string number))
(max_id (cdr (assq 'max_id args-alist)))
(since_id (cdr (assq 'since_id args-alist)))
(word (cdr (assq 'word args-alist)))
(parameters
`(,@(when max_id `(("max_id" . ,max_id)))
,@(when since_id `(("since_id" . ,since_id)))
,@(cond
((eq spec-type 'search)
`(("q" . ,word)
("rpp" . ,number-str)))
((eq spec-type 'list)
`(("per_page" . ,number-str)))
((memq spec-type '(user friends mentions public))
`(("count" . ,number-str)
("include_rts" . "true")))
(t
`(("count" . ,number-str))))))
(format (if (eq spec-type 'search)
"atom"
"xml"))
(simple-spec-list
'((direct_messages . "direct_messages")
(direct_messages_sent . "direct_messages/sent")
(friends . "statuses/friends_timeline")
(home . "statuses/home_timeline")
(mentions . "statuses/mentions")
(public . "statuses/public_timeline")
(replies . "statuses/replies")
(retweeted_by_me . "statuses/retweeted_by_me")
(retweeted_to_me . "statuses/retweeted_to_me")
(retweets_of_me . "statuses/retweets_of_me")))
(host (cond ((eq spec-type 'search) twittering-api-search-host)
(t twittering-api-host)))
(method
(cond
((eq spec-type 'user)
(let ((username (elt spec 1)))
(twittering-api-path "statuses/user_timeline/" username)))
((eq spec-type 'list)
(let ((username (elt spec 1))
(list-name (elt spec 2)))
(twittering-api-path username "/lists/" list-name "/statuses")))
((eq spec-type 'search)
twittering-search-api-method)
((assq spec-type simple-spec-list)
(twittering-api-path (cdr (assq spec-type simple-spec-list))))
(t nil))))
(if (and host method)
(twittering-http-get host method noninteractive parameters format)
(error "Invalid timeline spec"))))
((eq command 'get-list-index)
;; Get list names.
(let ((username (cdr (assq 'username args-alist)))
(sentinel (cdr (assq 'sentinel args-alist)))
(clean-up-sentinel (cdr (assq 'clean-up-sentinel args-alist))))
(twittering-http-get twittering-api-host
(twittering-api-path username "/lists")
noninteractive nil nil sentinel clean-up-sentinel)))
((eq command 'create-friendships)
;; Create a friendship.
(let ((username (cdr (assq 'username args-alist))))
(twittering-http-post twittering-api-host
(twittering-api-path "friendships/create")
`(("screen_name" . ,username)))))
((eq command 'destroy-friendships)
;; Destroy a friendship
(let ((username (cdr (assq 'username args-alist))))
(twittering-http-post twittering-api-host
(twittering-api-path "friendships/destroy")
`(("screen_name" . ,username)))))
((eq command 'create-favorites)
;; Create a favorite.
(let ((id (cdr (assq 'id args-alist))))
(twittering-http-post twittering-api-host
(twittering-api-path "favorites/create/" id))))
((eq command 'destroy-favorites)
;; Destroy a favorite.
(let ((id (cdr (assq 'id args-alist))))
(twittering-http-post twittering-api-host
(twittering-api-path "favorites/destroy/" id))))
((eq command 'update-status)
;; Post a tweet.
(let* ((status (cdr (assq 'status args-alist)))
(id (cdr (assq 'in-reply-to-status-id args-alist)))
(parameters
`(("status" . ,status)
,@(when (eq twittering-auth-method 'basic)
'(("source" . "twmode")))
,@(when id `(("in_reply_to_status_id" . ,id))))))
(twittering-http-post twittering-api-host
(twittering-api-path "statuses/update")
parameters)))
((eq command 'destroy-status)
;; Destroy a status.
(let ((id (cdr (assq 'id args-alist))))
(twittering-http-post twittering-api-host
(twittering-api-path "statuses/destroy/" id))))
((eq command 'retweet)
;; Post a retweet.
(let ((id (cdr (assq 'id args-alist))))
(twittering-http-post twittering-api-host
(twittering-api-path "statuses/retweet/" id))))
((eq command 'verify-credentials)
;; Verify the account.
(let ((sentinel (cdr (assq 'sentinel args-alist)))
(clean-up-sentinel (cdr (assq 'clean-up-sentinel args-alist))))
(twittering-http-get twittering-api-host
(twittering-api-path "account/verify_credentials")
noninteractive nil nil
sentinel clean-up-sentinel)))
((eq command 'send-direct-message)
;; Send a direct message.
(let ((parameters
`(("screen_name" . ,(cdr (assq 'username args-alist)))
("text" . ,(cdr (assq 'status args-alist))))))
(twittering-http-post twittering-api-host
(twittering-api-path "direct_messages/new")
parameters)))
(t
nil)))
;;;
;;; Proxy setting / functions
;;;
(defvar twittering-proxy-use nil)
(defvar twittering-proxy-server nil
"*Proxy server for `twittering-mode'.
If both `twittering-proxy-server' and `twittering-proxy-port' are
non-nil, the variables `twittering-proxy-*' have priority over other
variables `twittering-http-proxy-*' or `twittering-https-proxy-*'
regardless of HTTP or HTTPS.
To use individual proxies for HTTP and HTTPS, both `twittering-proxy-server'
and `twittering-proxy-port' must be nil.")
(defvar twittering-proxy-port nil
"*Port number for `twittering-mode'.
If both `twittering-proxy-server' and `twittering-proxy-port' are
non-nil, the variables `twittering-proxy-*' have priority over other
variables `twittering-http-proxy-*' or `twittering-https-proxy-*'
regardless of HTTP or HTTPS.
To use individual proxies for HTTP and HTTPS, both `twittering-proxy-server'
and `twittering-proxy-port' must be nil.")
(defvar twittering-proxy-keep-alive nil)
(defvar twittering-proxy-user nil
"*Username for `twittering-proxy-server'.
NOTE: If both `twittering-proxy-server' and `twittering-proxy-port' are
non-nil, the variables `twittering-proxy-*' have priority over other
variables `twittering-http-proxy-*' or `twittering-https-proxy-*'
regardless of HTTP or HTTPS.")
(defvar twittering-proxy-password nil
"*Password for `twittering-proxy-server'.
NOTE: If both `twittering-proxy-server' and `twittering-proxy-port' are
non-nil, the variables `twittering-proxy-*' have priority over other
variables `twittering-http-proxy-*' or `twittering-https-proxy-*'
regardless of HTTP or HTTPS.")
(defvar twittering-http-proxy-server nil
"*HTTP proxy server for `twittering-mode'.
If nil, it is initialized on entering `twittering-mode'.
The port number is specified by `twittering-http-proxy-port'.
For HTTPS connection, the proxy specified by `twittering-https-proxy-server'
and `twittering-https-proxy-port' is used.
NOTE: If both `twittering-proxy-server' and `twittering-proxy-port' are
non-nil, the variables `twittering-proxy-*' have priority over other
variables `twittering-http-proxy-*' or `twittering-https-proxy-*'
regardless of HTTP or HTTPS.")
(defvar twittering-http-proxy-port nil
"*Port number of a HTTP proxy server for `twittering-mode'.
If nil, it is initialized on entering `twittering-mode'.
The server is specified by `twittering-http-proxy-server'.
For HTTPS connection, the proxy specified by `twittering-https-proxy-server'
and `twittering-https-proxy-port' is used.
NOTE: If both `twittering-proxy-server' and `twittering-proxy-port' are
non-nil, the variables `twittering-proxy-*' have priority over other
variables `twittering-http-proxy-*' or `twittering-https-proxy-*'
regardless of HTTP or HTTPS.")
(defvar twittering-http-proxy-keep-alive nil
"*If non-nil, the Keep-alive is enabled. This is experimental.")
(defvar twittering-http-proxy-user nil
"*Username for `twittering-http-proxy-server'.
NOTE: If both `twittering-proxy-server' and `twittering-proxy-port' are
non-nil, the variables `twittering-proxy-*' have priority over other
variables `twittering-http-proxy-*' or `twittering-https-proxy-*'
regardless of HTTP or HTTPS.")
(defvar twittering-http-proxy-password nil
"*Password for `twittering-http-proxy-server'.
NOTE: If both `twittering-proxy-server' and `twittering-proxy-port' are
non-nil, the variables `twittering-proxy-*' have priority over other
variables `twittering-http-proxy-*' or `twittering-https-proxy-*'
regardless of HTTP or HTTPS.")
(defvar twittering-https-proxy-server nil
"*HTTPS proxy server for `twittering-mode'.
If nil, it is initialized on entering `twittering-mode'.
The port number is specified by `twittering-https-proxy-port'.
For HTTP connection, the proxy specified by `twittering-http-proxy-server'
and `twittering-http-proxy-port' is used.
NOTE: If both `twittering-proxy-server' and `twittering-proxy-port' are
non-nil, the variables `twittering-proxy-*' have priority over other
variables `twittering-http-proxy-*' or `twittering-https-proxy-*'
regardless of HTTP or HTTPS.")
(defvar twittering-https-proxy-port nil
"*Port number of a HTTPS proxy server for `twittering-mode'.
If nil, it is initialized on entering `twittering-mode'.
The server is specified by `twittering-https-proxy-server'.
For HTTP connection, the proxy specified by `twittering-http-proxy-server'
and `twittering-http-proxy-port' is used.
NOTE: If both `twittering-proxy-server' and `twittering-proxy-port' are
non-nil, the variables `twittering-proxy-*' have priority over other
variables `twittering-http-proxy-*' or `twittering-https-proxy-*'
regardless of HTTP or HTTPS.")
(defvar twittering-https-proxy-keep-alive nil
"*If non-nil, the Keep-alive is enabled. This is experimental.")
(defvar twittering-https-proxy-user nil
"*Username for `twittering-https-proxy-server'.
NOTE: If both `twittering-proxy-server' and `twittering-proxy-port' are
non-nil, the variables `twittering-proxy-*' have priority over other
variables `twittering-http-proxy-*' or `twittering-https-proxy-*'
regardless of HTTP or HTTPS.")
(defvar twittering-https-proxy-password nil
"*Password for `twittering-https-proxy-server'.
NOTE: If both `twittering-proxy-server' and `twittering-proxy-port' are
non-nil, the variables `twittering-proxy-*' have priority over other
variables `twittering-http-proxy-*' or `twittering-https-proxy-*'
regardless of HTTP or HTTPS.")
(defun twittering-normalize-proxy-vars ()
"Normalize the type of `twittering-http-proxy-port' and
`twittering-https-proxy-port'."
(mapc (lambda (sym)
(let ((value (symbol-value sym)))
(cond
((null value)
nil)
((integerp value)
nil)
((stringp value)
(set sym (string-to-number value)))
(t
(set sym nil)))))
'(twittering-proxy-port
twittering-http-proxy-port
twittering-https-proxy-port)))
(defun twittering-proxy-info (scheme &optional item)
"Return an alist for proxy configuration registered for SCHEME.
SCHEME must be a string \"http\", \"https\" or a symbol 'http or 'https.
The server name is a string and the port number is an integer."
(twittering-normalize-proxy-vars)
(let ((scheme (if (symbolp scheme)
(symbol-name scheme)
scheme))
(info-list
`((("http" "https")
. ((server . ,twittering-proxy-server)
(port . ,twittering-proxy-port)
(keep-alive . ,twittering-proxy-keep-alive)
(user . ,twittering-proxy-user)
(password . ,twittering-proxy-password)))
(("http")
. ((server . ,twittering-http-proxy-server)
(port . ,twittering-http-proxy-port)
(keep-alive . ,twittering-http-proxy-keep-alive)
(user . ,twittering-http-proxy-user)
(password . ,twittering-http-proxy-password)))
(("https")
. ((server . ,twittering-https-proxy-server)
(port . ,twittering-https-proxy-port)
(keep-alive . ,twittering-https-proxy-keep-alive)
(user . ,twittering-https-proxy-user)
(password . ,twittering-https-proxy-password))))))
(let ((info
(car (remove nil
(mapcar
(lambda (entry)
(when (member scheme (car entry))
(let ((info (cdr entry)))
(when (and (cdr (assq 'server info))
(cdr (assq 'port info)))
info))))
info-list)))))
(if item
(cdr (assq item info))
info))))
(defun twittering-url-proxy-services ()
"Return the current proxy configuration for `twittering-mode' in the format
of `url-proxy-services'."
(remove nil (mapcar
(lambda (scheme)
(let ((server (twittering-proxy-info scheme 'server))
(port (twittering-proxy-info scheme 'port)))
(when (and server port)
`(,scheme . ,(format "%s:%s" server port)))))
'("http" "https"))))
(defun twittering-find-proxy (scheme)
"Find proxy server and its port from the environmental variables and return
a cons pair of them.
SCHEME must be \"http\" or \"https\"."
(cond
((require 'url-methods nil t)
(url-scheme-register-proxy scheme)
(let* ((proxy-service (assoc scheme url-proxy-services))
(proxy (if proxy-service (cdr proxy-service) nil)))
(if (and proxy
(string-match "^\\([^:]+\\):\\([0-9]+\\)$" proxy))
(let ((host (match-string 1 proxy))
(port (string-to-number (match-string 2 proxy))))
(cons host port))
nil)))
(t
(let* ((env-var (concat scheme "_proxy"))
(env-proxy (or (getenv (upcase env-var))
(getenv (downcase env-var))))
(default-port (if (string= "https" scheme) "443" "80")))
(if (and env-proxy
(string-match
"^\\(https?://\\)?\\([^:/]+\\)\\(:\\([0-9]+\\)\\)?/?$"
env-proxy))
(let* ((host (match-string 2 env-proxy))
(port-str (or (match-string 4 env-proxy) default-port))
(port (string-to-number port-str)))
(cons host port))
nil)))))
(defun twittering-setup-proxy ()
(when (require 'url-methods nil t)
;; If `url-scheme-registry' is not initialized,
;; `url-proxy-services' will be reset by calling
;; `url-insert-file-contents' or `url-retrieve-synchronously', etc.
;; To avoid it, initialize `url-scheme-registry' by calling
;; `url-scheme-get-property' before calling such functions.
(url-scheme-get-property "http" 'name)
(url-scheme-get-property "https" 'name))
(unless (and twittering-http-proxy-server
twittering-http-proxy-port)
(let ((info (twittering-find-proxy "http")))
(setq twittering-http-proxy-server (car-safe info))
(setq twittering-http-proxy-port (cdr-safe info))))
(unless (and twittering-https-proxy-server
twittering-https-proxy-port)
(let ((info (twittering-find-proxy "https")))
(setq twittering-https-proxy-server (car-safe info))
(setq twittering-https-proxy-port (cdr-safe info))))
(if (and twittering-proxy-use
(null (twittering-proxy-info "http"))
(null (twittering-proxy-info "https")))
(progn
(message "Disabling proxy due to lack of configuration.")
(setq twittering-proxy-use nil))
t))
(defun twittering-toggle-proxy ()
(interactive)
(setq twittering-proxy-use
(not twittering-proxy-use))
(if (twittering-setup-proxy)
(message (if twittering-proxy-use "Use Proxy:on" "Use Proxy:off")))
(twittering-update-mode-line))
;;;
;;; OAuth
;;;
(defvar twittering-oauth-get-token-function-table
'((native . twittering-oauth-get-token-alist-native)
(curl . twittering-oauth-get-token-alist-curl)
(url . twittering-oauth-get-token-alist-url))
"Alist of functions used for getting a token on OAuth.")
(defvar twittering-oauth-get-token-function-type 'curl
"*Symbol specifying function type used for getting a token on OAuth.
The function corresponding to the symbol is determined by
`twittering-oauth-get-token-function-table'.")
(defvar twittering-oauth-invoke-browser nil
"*Whether to invoke a browser on authorization of access key automatically.")
(defun twittering-oauth-url-encode (str &optional coding-system)
"Encode string according to Percent-Encoding defined in RFC 3986."
(let ((coding-system (or (when (and coding-system
(coding-system-p coding-system))
coding-system)
'utf-8)))
(mapconcat
(lambda (c)
(cond
((or (and (<= ?A c) (<= c ?Z))
(and (<= ?a c) (<= c ?z))
(and (<= ?0 c) (<= c ?9))
(eq ?. c)
(eq ?- c)
(eq ?_ c)
(eq ?~ c))
(char-to-string c))
(t (format "%%%02X" c))))
(encode-coding-string str coding-system)
"")))
(defun twittering-oauth-unhex (c)
(cond
((and (<= ?0 c) (<= c ?9))
(- c ?0))
((and (<= ?A c) (<= c ?F))
(+ 10 (- c ?A)))
((and (<= ?a c) (<= c ?f))
(+ 10 (- c ?a)))
))
(defun twittering-oauth-url-decode (str &optional coding-system)
(let* ((coding-system (or (when (and coding-system
(coding-system-p coding-system))
coding-system)
'utf-8))
(substr-list (split-string str "%"))
(head (car substr-list))
(tail (cdr substr-list)))
(decode-coding-string
(concat
head
(mapconcat
(lambda (substr)
(if (string-match "\\`\\([0-9a-fA-F]\\)\\([0-9a-fA-F]\\)\\(.*\\)\\'"
substr)
(let* ((c1 (string-to-char (match-string 1 substr)))
(c0 (string-to-char (match-string 2 substr)))
(tail (match-string 3 substr))
(ch (+ (* 16 (twittering-oauth-unhex c1))
(twittering-oauth-unhex c0))))
(concat (char-to-string ch) tail))
substr))
tail
""))
coding-system)))
(defun twittering-oauth-make-signature-base-string (method base-url parameters)
;; "OAuth Core 1.0a"
;; http://oauth.net/core/1.0a/#anchor13
(let* ((sorted-parameters (copy-sequence parameters))
(sorted-parameters
(sort sorted-parameters
(lambda (entry1 entry2)
(string< (car entry1) (car entry2))))))
(concat
method
"&"
(twittering-oauth-url-encode base-url)
"&"
(mapconcat
(lambda (entry)
(let ((key (car entry))
(value (cdr entry)))
(concat (twittering-oauth-url-encode key)
"%3D"
(twittering-oauth-url-encode value))))
sorted-parameters
"%26"))))
(defun twittering-oauth-make-random-string (len)
(let* ((table
(concat
"0123456789"
"ABCDEFGHIJKLMNOPQRSTUVWXYZ"
"abcdefghijklmnopqrstuvwxyz"))
(n (length table))
(l 0)
(result (make-string len ?0)))
(while (< l len)
(aset result l (aref table (random n)))
(setq l (1+ l)))
result))
;;;
;;; The below function is derived from `hmac-sha1' retrieved
;;; from http://www.emacswiki.org/emacs/HmacShaOne.
;;;
(defun twittering-hmac-sha1 (key message)
"Return an HMAC-SHA1 authentication code for KEY and MESSAGE.
KEY and MESSAGE must be unibyte strings. The result is a unibyte
string. Use the function `encode-hex-string' or the function
`base64-encode-string' to produce human-readable output.
See URL:<http://en.wikipedia.org/wiki/HMAC> for more information
on the HMAC-SHA1 algorithm.
The Emacs multibyte representation actually uses a series of
8-bit values under the hood, so we could have allowed multibyte
strings as arguments. However, internal 8-bit values don't
correspond to any external representation \(at least for major
version 22). This makes multibyte strings useless for generating
hashes.
Instead, callers must explicitly pick and use an encoding for
their multibyte data. Most callers will want to use UTF-8
encoding, which we can generate as follows:
(let ((unibyte-key (encode-coding-string key 'utf-8 t))
(unibyte-value (encode-coding-string value 'utf-8 t)))
(twittering-hmac-sha1 unibyte-key unibyte-value))
For keys and values that are already unibyte, the
`encode-coding-string' calls just return the same string."
;;; Return an HMAC-SHA1 authentication code for KEY and MESSAGE.
;;;
;;; KEY and MESSAGE must be unibyte strings. The result is a unibyte
;;; string. Use the function `encode-hex-string' or the function
;;; `base64-encode-string' to produce human-readable output.
;;;
;;; See URL:<http://en.wikipedia.org/wiki/HMAC> for more information
;;; on the HMAC-SHA1 algorithm.
;;;
;;; The Emacs multibyte representation actually uses a series of
;;; 8-bit values under the hood, so we could have allowed multibyte
;;; strings as arguments. However, internal 8-bit values don't
;;; correspond to any external representation \(at least for major
;;; version 22). This makes multibyte strings useless for generating
;;; hashes.
;;;
;;; Instead, callers must explicitly pick and use an encoding for
;;; their multibyte data. Most callers will want to use UTF-8
;;; encoding, which we can generate as follows:
;;;
;;; (let ((unibyte-key (encode-coding-string key 'utf-8 t))
;;; (unibyte-value (encode-coding-string value 'utf-8 t)))
;;; (hmac-sha1 unibyte-key unibyte-value))
;;;
;;; For keys and values that are already unibyte, the
;;; `encode-coding-string' calls just return the same string.
;;;
;;; Author: Derek Upham - sand (at) blarg.net
;;;
;;; Copyright: This code is in the public domain.
(require 'sha1)
(when (multibyte-string-p key)
(error "key must be unibyte"))
(when (multibyte-string-p message)
(error "message must be unibyte"))
;; The key block is always exactly the block size of the hash
;; algorithm. If the key is too small, we pad it with zeroes (or
;; instead, we initialize the key block with zeroes and copy the
;; key onto the nulls). If the key is too large, we run it
;; through the hash algorithm and use the hashed value (strange
;; but true).
(let ((+hmac-sha1-block-size-bytes+ 64)) ; SHA-1 uses 512-bit blocks
(when (< +hmac-sha1-block-size-bytes+ (length key))
(setq key (sha1 key nil nil t)))
(let ((key-block (make-vector +hmac-sha1-block-size-bytes+ 0)))
(dotimes (i (length key))
(aset key-block i (aref key i)))
(let ((opad (make-vector +hmac-sha1-block-size-bytes+ #x5c))
(ipad (make-vector +hmac-sha1-block-size-bytes+ #x36)))
(dotimes (i +hmac-sha1-block-size-bytes+)
(aset ipad i (logxor (aref ipad i) (aref key-block i)))
(aset opad i (logxor (aref opad i) (aref key-block i))))
(when (fboundp 'unibyte-string)
;; `concat' of Emacs23 (and later?) generates a multi-byte
;; string from a vector of characters with eight bit.
;; Since `opad' and `ipad' must be unibyte, we have to
;; convert them by using `unibyte-string'.
;; We cannot use `string-as-unibyte' here because it encodes
;; bytes with the manner of UTF-8.
(setq opad (apply 'unibyte-string (mapcar 'identity opad)))
(setq ipad (apply 'unibyte-string (mapcar 'identity ipad))))
(sha1 (concat opad
(sha1 (concat ipad message)
nil nil t))
nil nil t)))))
(defun twittering-oauth-auth-str (method base-url query-parameters oauth-parameters key)
"Generate the value for HTTP Authorization header on OAuth.
QUERY-PARAMETERS is an alist for query parameters, where name and value
must be encoded into the same as they will be sent."
(let* ((parameters (append query-parameters oauth-parameters))
(base-string
(twittering-oauth-make-signature-base-string method base-url parameters))
(key (if (multibyte-string-p key)
(string-make-unibyte key)
key))