/
twittering-mode.el
7494 lines (6961 loc) · 268 KB
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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-without-scheme
"://api.twitter.com/oauth/request_token")
(defvar twittering-oauth-authorization-url-base-without-scheme
"://api.twitter.com/oauth/authorize?oauth_token=")
(defvar twittering-oauth-access-token-url-without-scheme
"://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. The symbol `xauth' means xAuth 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-account-authorization nil
"State of account authorization for `twittering-username' and
`twittering-password'. The value is one of the following symbols:
nil -- The account have not been authorized yet.
queried -- The authorization has been queried, but not finished yet.
authorized -- The account has been authorized.")
(defvar twittering-oauth-use-ssl t
"*Whether to use SSL on authentication via OAuth. Twitter requires SSL
on authorization via OAuth.")
(defvar twittering-oauth-invoke-browser nil
"*Whether to invoke a browser on authorization of access key automatically.")
(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 shorten URI.
This must be one of key symbols of `twittering-tinyurl-services-map'.
To use 'bit.ly or 'j.mp, you have to configure `twittering-bitly-login' and
`twittering-bitly-api-key'.")
(defvar twittering-tinyurl-services-map
'((bit.ly twittering-make-http-request-for-bitly)
(goo.gl
(lambda (service longurl)
(twittering-make-http-request-from-uri
"POST" '(("Content-Type" . "application/json"))
"https://www.googleapis.com/urlshortener/v1/url"
(concat "{\"longUrl\": \"" longurl "\"}")))
(lambda (service reply)
(when (string-match "\"id\"[[:space:]]*:[[:space:]]*\"\\([^\"]*\\)\""
reply)
(match-string 1 reply))))
(is.gd . "http://is.gd/create.php?format=simple&url=")
(j.mp twittering-make-http-request-for-bitly)
(tinyurl . "http://tinyurl.com/api-create.php?url=")
(toly
(lambda (service longurl)
(twittering-make-http-request-from-uri
"POST" nil
"http://to.ly/api.php"
(concat "longurl=" (twittering-percent-encode longurl))))))
"Alist of URL shortening services.
The key is a symbol specifying the service.
The value is a string or a list consisting of two elements at most.
If the value is a string, `(concat THE-FIRST-ELEMENT longurl)' is used as the
URL invoking the service.
If the value is a list, it is interpreted as follows.
The first element specifies how to make a HTTP request for shortening a URL.
If the first element is a string, `(concat THE-FIRST-ELEMENT longurl)' is
used as the URL invoking the service.
If the first element is a function, it is called as `(funcall THE-FIRST-ELEMENT
service-symbol longurl)' to obtain a HTTP request alist for invoking the
service, which must be generated by `twittering-make-http-request'.
The second element specifies how to post-process a HTTP reply by the HTTP
request.
If the second element is nil, the reply is directly used as a shortened URL.
If the second element is a function, it is called as `(funcall
THE-SECOND-ELEMENT service-symbol HTTP-reply-string)' and its result is used
as a shortened URL.")
(defvar twittering-bitly-login nil
"*The login name for URL shortening service bit.ly and j.mp.")
(defvar twittering-bitly-api-key nil
"*The API key for URL shortening service bit.ly and j.mp.")
(defvar twittering-mode-map (make-sparse-keymap))
(defvar twittering-mode-menu-on-uri-map (make-sparse-keymap "Twittering Mode"))
(defvar twittering-mode-on-uri-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 5.0
"The interval of auto redisplaying statuses.
Each time Emacs remains idle for the interval, twittering-mode updates parts
requiring to be redrawn.")
(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\" . \"my-account/friends-list\")
(\"related-to\" .
,(lambda (username)
(if username
(format \":search/to:%s OR from:%s OR @%s/\"
username username username)
\":home\")))),
then you can use \"$FRIENDS\" and \"$related-to(USER)\" as
\"my-account/friends-list\" and \":search/to:USER OR from:USER OR @USER/\",
respectively.")
(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-display-connection-method t
"*If non-nil, display the current connection method 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 and does not
squeeze a series of white spaces.
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-wget-program nil
"Cache a result of `twittering-find-wget-program'.
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 wget urllib-http native urllib-https))
"*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)
(send-http-request . twittering-send-http-request-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)
(send-http-request . twittering-send-http-request-curl)
(pre-process-buffer . twittering-pre-process-buffer-curl))
(wget (check . twittering-start-http-session-wget-p)
(https . t)
(send-http-request . twittering-send-http-request-wget)
(pre-process-buffer . twittering-pre-process-buffer-wget))
(urllib-http
(display-name . "urllib")
(check . twittering-start-http-session-urllib-p)
(https . nil)
(send-http-request . twittering-send-http-request-urllib)
(pre-process-buffer . twittering-pre-process-buffer-urllib))
(urllib-https
(display-name . "urllib")
(check . twittering-start-http-session-urllib-p)
(https . twittering-start-http-session-urllib-https-p)
(send-http-request . twittering-send-http-request-urllib)
(pre-process-buffer . twittering-pre-process-buffer-urllib)))
"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.")
;;;;
;;;; Macro and small utility function
;;;;
(defun assocref (item alist)
(cdr (assoc item alist)))
(defmacro list-push (value listvar)
`(setq ,listvar (cons ,value ,listvar)))
(defmacro case-string (str &rest clauses)
`(cond
,@(mapcar
(lambda (clause)
(let ((keylist (car clause))
(body (cdr clause)))
`(,(if (listp keylist)
`(or ,@(mapcar (lambda (key) `(string-equal ,str ,key))
keylist))
't)
,@body)))
clauses)))
;;;;
;;;; Utility for portability
;;;;
(defun twittering-remove-duplicates (list)
"Return a copy of LIST with all duplicate elements removed.
This is non-destructive version of `delete-dups' which is not
defined in Emacs21."
(if (fboundp 'delete-dups)
(delete-dups (copy-sequence list))
(let ((rest list)
(result nil))
(while rest
(unless (member (car rest) result)
(setq result (cons (car rest) result)))
(setq rest (cdr rest)))
(nreverse result))))
(defun twittering-completing-read (prompt collection &optional predicate require-match initial-input hist def inherit-input-method)
"Read a string in the minibuffer, with completion.
This is a modified version of `completing-read' and accepts candidates
as a list of a string on Emacs21."
;; completing-read() of Emacs21 does not accepts candidates as
;; a list. Candidates must be given as an alist.
(let* ((collection (twittering-remove-duplicates collection))
(collection
(if (and (> 22 emacs-major-version)
(listp collection)
(stringp (car collection)))
(mapcar (lambda (x) (cons x nil)) collection)
collection)))
(completing-read prompt collection predicate require-match
initial-input hist def inherit-input-method)))
;;;;
;;;; Debug mode
;;;;
(defvar twittering-debug-mode nil)
(defvar twittering-debug-buffer "*debug*")
(defun twittering-get-or-generate-buffer (buffer)
(if (bufferp buffer)
(if (buffer-live-p buffer)
buffer
(generate-new-buffer (buffer-name buffer)))
(if (stringp buffer)
(or (get-buffer buffer)
(generate-new-buffer buffer)))))
(defun twittering-debug-buffer ()
(twittering-get-or-generate-buffer twittering-debug-buffer))
(defmacro debug-print (obj)
(let ((obsym (gensym)))
`(let ((,obsym ,obj))
(if twittering-debug-mode
(with-current-buffer (twittering-debug-buffer)
(insert "[debug] " (prin1-to-string ,obsym))
(newline)
,obsym)
,obsym))))
(defun debug-printf (fmt &rest args)
(when twittering-debug-mode
(with-current-buffer (twittering-debug-buffer)
(insert "[debug] " (apply 'format fmt args))
(newline))))
(defun twittering-debug-mode ()
(interactive)
(setq twittering-debug-mode
(not twittering-debug-mode))
(message (if twittering-debug-mode "debug mode:on" "debug mode:off")))
;;;;
;;;; 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))
;;;;
;;;; Functions for URL library
;;;;
(defvar twittering-url-show-status nil
"*Whether to show a running total of bytes transferred.")
;;;;
;;;; CA certificate
;;;;
(defvar twittering-cert-file nil)
(defun twittering-delete-ca-cert-file ()
(when (and twittering-cert-file
(file-exists-p twittering-cert-file))
(delete-file twittering-cert-file)
(setq twittering-cert-file nil)))
;;; FIXME: file name is hard-coded. More robust way is desired.
;;; https://www.geotrust.com/resources/root_certificates/certificates/Equifax_Secure_Certificate_Authority.cer
(defun twittering-ensure-ca-cert ()
"Create a CA certificate file if it does not exist, and return
its file name. The certificate is retrieved from
`https://www.geotrust.com/resources/root_certificates/certificates/Equifax_Secure_Certificate_Authority.cer'."
(if twittering-cert-file
twittering-cert-file
(let ((file-name (make-temp-file "twmode-cacert")))
(with-temp-file file-name
(insert "-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----
"))
(add-hook 'kill-emacs-hook 'twittering-delete-ca-cert-file)
(setq twittering-cert-file file-name))))
;;;;
;;;; User agent
;;;;
(defvar twittering-user-agent-function 'twittering-user-agent-default-function)
(defun twittering-user-agent-default-function ()
"Twittering mode default User-Agent function."
(format "Emacs/%d.%d Twittering-mode/%s"
emacs-major-version emacs-minor-version
twittering-mode-version))
(defun twittering-user-agent ()
"Return User-Agent header string."
(funcall twittering-user-agent-function))
;;;;
;;;; Basic HTTP functions (general)
;;;;
(defun twittering-percent-encode (str &optional coding-system)
"Encode STR according to Percent-Encoding defined in RFC 3986."
(twittering-oauth-url-encode str coding-system))
(defun twittering-lookup-connection-type (use-ssl &optional order table)
"Return available entry extracted fron connection type table.
TABLE is connection type table, which is an alist of type symbol and its
item alist, such as
'((native (check . t)
(https . twittering-start-http-session-native-tls-p)
(start . twittering-start-http-session-native))
(curl (check . twittering-start-http-session-curl-p)
(https . twittering-start-http-session-curl-https-p)
(start . twittering-start-http-session-curl))) .
ORDER means the priority order of type symbols.
If USE-SSL is nil, the item `https' is ignored.
When the type `curl' has priority and is available for the above table,
the function returns
'((check . twittering-start-http-session-curl-p)
(https . twittering-start-http-session-curl-https-p)
(start . twittering-start-http-session-curl)) ."
(let ((rest (or order twittering-connection-type-order))
(table (or table twittering-connection-type-table))
(result nil))
(while (and rest (null result))
(let* ((candidate (car rest))
(entry (cons `(symbol . ,candidate)
(cdr (assq candidate table))))
(entry (if (assq 'display-name entry)
entry
(cons `(display-name . ,(symbol-name candidate))
entry)))
(validate (lambda (item)
(let ((v (cdr (assq item entry))))
(or (null v) (eq t v) (functionp v)))))
(confirm (lambda (item)
(let ((v (cdr (assq item entry))))
(cond
((null v) nil)
((eq t v) t)
((functionp v) (funcall v)))))))
(if (and (funcall validate 'check)
(or (not use-ssl) (funcall validate 'https)))
(cond
((and (funcall confirm 'check)
(or (not use-ssl) (funcall confirm 'https)))
(setq rest nil)
(setq result entry))
(t
(setq rest (cdr rest))))
(message "The configuration for conncetion type `%s' is invalid."
candidate)
(setq rest nil))))
result))
(defun twittering-get-connection-method-name (use-ssl)
"Return a name of the preferred connection method.
If USE-SSL is non-nil, return a connection method for HTTPS.
If USE-SSL is nil, return a connection method for HTTP."
(cdr (assq 'display-name (twittering-lookup-connection-type use-ssl))))
(defun twittering-lookup-http-start-function (&optional order table)
"Decide a connection method from currently available methods."
(let ((entry
(twittering-lookup-connection-type twittering-use-ssl order table)))
(cdr (assq 'send-http-request entry))))
(defun twittering-ensure-connection-method (&optional order table)
"Ensure a connection method with a compromise.
Return nil if no connection methods are available with a compromise."
(let* ((use-ssl (or twittering-use-ssl twittering-oauth-use-ssl))
(entry (twittering-lookup-connection-type use-ssl order table)))
(cond
(entry
t)
((and (null entry) use-ssl
(yes-or-no-p "HTTPS(SSL) is unavailable. Use HTTP instead? "))
;; Fall back on connection without SSL.
(setq twittering-use-ssl nil)
(setq twittering-oauth-use-ssl nil)
(twittering-update-mode-line)
(twittering-ensure-connection-method order table)
t)
(t
nil))))
(defun twittering-make-http-request (method header-list host port path query-parameters post-body use-ssl)
"Returns an alist specifying a HTTP request.
METHOD specifies HTTP method. It must be \"GET\" or \"POST\".
HEADER-LIST is a list of (field-name . field-value) specifying HTTP header
fields. The fields \"Host\", \"User-Agent\" and \"Content-Length\" are
automatically filled if necessary.
HOST specifies the host.
PORT specifies the port. This must be an integer.
PATH specifies the absolute path in URI (without query string).
QUERY-PARAMTERS is a string or an alist.
If QUERY-PARAMTERS is a string, it is treated as an encoded query string.
If QUERY-PARAMTERS is an alist, it represents a list of cons pairs of
string, (query-key . query-value).
POST-BODY specifies the post body sent when METHOD equals to \"POST\".
If POST-BODY is nil, no body is posted.
If USE-SSL is non-nil, the request is performed with SSL.
The result alist includes the following keys, where a key is a symbol.
method: HTTP method such as \"GET\" or \"POST\".
scheme: the scheme name. \"http\" or \"https\".
host: the host to which the request is sent.
port: the port to which the request is sent (integer).
path: the absolute path string. Note that it does not include query string.
query-string: the query string.
encoded-query-alist: the alist consisting of pairs of encoded query-name and
encoded query-value.