2010-02-23 12:32:23 +00:00
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/* twitter client
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2010-02-23 19:34:26 +00:00
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* http://apiwiki.twitter.com/Twitter-API-Documentation
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2010-02-23 12:32:23 +00:00
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*
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2010-02-24 08:02:54 +00:00
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* - register @ https://twitter.com/apps
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2010-02-23 12:40:23 +00:00
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* - settings:
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2010-02-23 17:46:50 +00:00
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* - app name: e.g. psyc://your.host/
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2010-02-23 12:40:23 +00:00
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* - app type: browser
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* - callback url: http://your.host/oauth
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2010-02-23 17:46:50 +00:00
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* (actually the url psyced sends will be used but you have to type in something)
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2010-02-23 12:32:23 +00:00
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* - then in local.h #define TWITTER_KEY & TWITTER_SECRET
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2011-08-24 08:57:50 +00:00
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*
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* - enabling the user stream
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* - #define TWITTER_ADMIN which should contain a user name who will receive oauth messages
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* - #define USE_TWITTER_STREAM
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* - add this to local/config.c:
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# ifdef USE_TWITTER_STREAM
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D(" " NET_PATH "twitter/client\n");
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load_object(NET_PATH "twitter/client")->home_stream();
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# endif
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2010-02-23 12:32:23 +00:00
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*/
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2010-02-23 12:10:06 +00:00
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#include <net.h>
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2010-02-23 19:45:31 +00:00
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#include <ht/http.h>
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2010-02-23 12:10:06 +00:00
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inherit NET_PATH "http/oauth";
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2011-08-24 08:57:50 +00:00
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inherit NET_PATH "queue";
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persistent mixed lastid;
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volatile string api_url = "https://api.twitter.com/1";
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volatile string userstream_url = "https://userstream.twitter.com/2";
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2011-08-24 09:11:56 +00:00
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volatile string name = "twitter";
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volatile string display_name = "twitter";
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2011-08-24 08:57:50 +00:00
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volatile int status_max_len = 140;
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volatile int send_to_user = 0;
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volatile int wait = 0;
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volatile mapping friends;
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user_stream();
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string object_file_name() {
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return DATA_PATH "twitter/" + (user ? user->qNameLower() : "-default");
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}
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save() {
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mkdir(DATA_PATH "twitter");
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save_object(object_file_name());
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}
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2010-02-23 12:10:06 +00:00
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2011-08-24 08:57:50 +00:00
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create() {
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return load();
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}
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2010-02-23 22:42:54 +00:00
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2011-08-24 08:57:50 +00:00
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object load(object usr, mapping opts) {
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#ifdef TWITTER_ADMIN
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unless (usr) usr = user = summon_person(TWITTER_ADMIN, NET_PATH "user");
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#endif
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unless (mappingp(opts)) opts = ([]);
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send_to_user = opts["send_to_user"];
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2010-02-23 22:42:54 +00:00
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unless (consumer_key) consumer_key = TWITTER_KEY;
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unless (consumer_secret) consumer_secret = TWITTER_SECRET;
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2011-08-24 08:57:50 +00:00
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unless (request_token_url) request_token_url = "https://twitter.com/oauth/request_token";
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unless (access_token_url) access_token_url = "https://twitter.com/oauth/access_token";
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unless (authorize_url) authorize_url = "https://twitter.com/oauth/authorize";
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restore_object(object_file_name());
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qCreate();
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qInit(ME, 100, 5);
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2010-02-23 12:10:06 +00:00
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2011-08-24 08:57:50 +00:00
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return ::load(usr, opts);
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2010-02-23 12:10:06 +00:00
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}
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2011-08-24 08:57:50 +00:00
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void check_status_update(string body, string headers, int http_status) {
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2010-02-23 19:34:26 +00:00
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P3(("twitter/client:parse_status_update(%O, %O, %O)\n", body, headers, http_status))
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if (http_status != R_OK)
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2011-08-24 09:11:56 +00:00
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sendmsg(user, "_failure_update_"+ name, "Unable to post status update on [_name].", (["_name": display_name]));
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2010-02-23 12:10:06 +00:00
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}
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2010-02-23 17:46:50 +00:00
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void status_update(string text) {
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P3(("twitter/client:status_update()\n"))
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2010-02-23 22:42:54 +00:00
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if (status_max_len && strlen(text) > status_max_len) text = text[0..status_max_len-4] + "...";
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2010-02-23 17:46:50 +00:00
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object ua = clone_object(NET_PATH "http/fetch");
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2011-08-24 08:57:50 +00:00
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ua->content(#'check_status_update, 1, 1); //');
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fetch(ua, api_url + "/statuses/update.json", "POST", (["status": text]));
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2010-02-23 17:46:50 +00:00
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}
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2011-08-24 08:57:50 +00:00
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parse_statuses(string data) {
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mixed wurst;
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string nick;
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object o;
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mapping d, p;
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int i;
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if (!data || data == "") return;
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wurst = parse_json(data);
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if (mappingp(wurst))
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wurst = ({ wurst });
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else unless (pointerp(wurst)) {
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monitor_report("_failure_network_fetch_twitter_broken",
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"[_source] failed to parse a status message");
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return;
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}
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unless (sizeof(wurst)) {
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monitor_report("_failure_network_fetch_twitter_empty",
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"[_source] received an empty structure.");
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return;
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}
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// this used to fail on MAX_INT turning the ints to negative.. it would work for
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// a while longer using floats, but since floating point mantissa in lpc is only
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// 32 bits wide, it's just a question of time until we hit that roof again (when
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// status_id reaches 4294967296). so let's use bignums instead. funny to run into
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// such a weird problem only after years that twitter has been in existence.
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if (lastid && bignum_cmp(to_string(wurst[0]["id"]), to_string(lastid)) <= 0) {
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P1(("%O received %d old updates (id0 %O <= lastid %O).\n",
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ME, sizeof(wurst), wurst[0]["id"], lastid))
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return;
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}
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lastid = wurst[0]["id"];
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save();
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for (i=sizeof(wurst)-1; i>=0; i--) {
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d = wurst[i];
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unless (mappingp(d)) {
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P1(("%O got a broken tweet: %O.\n", ME, d))
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continue;
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}
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p = d["user"];
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unless (mappingp(p)) {
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P1(("%O got a userless tweet.\n", ME))
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continue;
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}
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unless (nick = p["screen_name"]) {
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P1(("%O got a nickless tweeter.\n", ME))
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continue;
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}
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o = send_to_user ? user : find_place(nick);
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// _message_twitter ? not so convincing.. a lot of the
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// things are converted rss newsfeeds, and when private
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// people are "chatting" over twitter, they are still
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// "broadcasting" each message to a random conjunction
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// of friends and strangers (we don't follow private
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// twitters with this gateway!) ... thus it is quite
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// appropriate that twitters are not given the same
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// relevance as a _message. still you can /highlight
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// particular senders in your client...
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//
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sendmsg(o,
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// "_notice_headline_twitter", "([_nick]) [_headline]",
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"_message_twitter", d["text"],
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([
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"_headline": d["text"], // should i send text as _action?
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"_nick": nick,
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// _count seems to be the better word for this
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"_amount_updates": p["statuses_count"],
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"_amount_followers": p["followers_count"],
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"_amount_sources": p["friends_count"],
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"_color": "#"+ p["profile_sidebar_fill_color"],
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"_description": p["description"] || "",
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"_page": p["url"] || "",
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"_name": p["name"] || "",
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// "_contact_twitter": p["id"],
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"_description_agent_HTML": d["source"],
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"_reference_reply": d["in_reply_to_screen_name"],
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// "_twit": d["id"],
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"_uniform_photo": p["profile_image_url"] || "",
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"_uniform_photo_background":
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p["profile_background_image_url"] || ""
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]), "/"); // send as root
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// der spiegel u.a. twittern übrigens in latin-1
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// während psyc utf-8 erwartet.. eine char guess engine
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// muss her.. FIXME
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}
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}
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parse_home_timeline(string body, string headers, int http_status) {
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2010-02-23 19:34:26 +00:00
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P3(("twitter/client:parse_home_timeline(%O, %O, %O)\n", body, headers, http_status))
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2011-08-24 08:57:50 +00:00
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if (http_status == 401) {
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oauth();
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home_timeline();
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}
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if (http_status != R_OK || !body || body == "") return;
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parse_statuses(body);
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2010-02-23 17:46:50 +00:00
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}
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2011-08-24 08:57:50 +00:00
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home_timeline(mixed *next) {
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2010-02-23 17:46:50 +00:00
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P3(("twitter/client:home_timeline()\n"))
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2011-08-24 08:57:50 +00:00
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if (!authorized) return enqueue(ME, ({ #'home_timeline })); //'}));
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2010-02-23 12:10:06 +00:00
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object ua = clone_object(NET_PATH "http/fetch");
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2010-02-23 17:46:50 +00:00
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ua->content(#'parse_home_timeline, 1, 1); //');
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2011-08-24 08:57:50 +00:00
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if (next) ua->content(next, 1, 1); //');
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fetch(ua, api_url + "/statuses/home_timeline.json");
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return ua;
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}
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home_stream() {
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home_timeline(#'user_stream);
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}
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// handle one line in the user stream which contains a full message in json format
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// or the user's friend if this is the first line in the stream
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user_stream_data(string data, string headers, int http_status, int fetching) {
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P3(("twitter/client:user_stream_data(..., %O, %O, %O)\n%O\n", headers, http_status, fetching, data))
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if (http_status == R_OK && data && data != "") {
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if (!friends)
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friends = parse_json(data);
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else
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parse_statuses(data);
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}
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if (fetching) {
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wait = 0;
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return;
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} else {
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P1(("%O disconnected with status %d, headers: %O\n", ME, http_status, headers))
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}
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switch (http_status) {
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case 401: // unauthorized
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oauth();
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home_stream();
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case 403: // forbidden
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case 404: // unknown
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case 406: // not acceptable
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case 413: // too long
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case 416: // range unacceptable
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return;
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case 200:
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break;
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case 420: // rate limited
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case 500: // server internal error
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case 503: // service overloaded
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default:
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wait *= 2;
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}
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if (!wait) wait = 10;
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if (wait > 240) wait = 240;
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P1(("%O reconnecting in %d seconds.\n", ME, wait))
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call_out(#'home_stream, wait); //');
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}
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user_stream() {
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P3(("twitter/client:user_stream()\n"))
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if (!authorized) return enqueue(ME, ({ #'user_stream })); //'}));
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friends = 0;
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object user_ua = clone_object(NET_PATH "http/fetch_stream");
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user_ua->content(#'user_stream_data, 1, 1); //');
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fetch(user_ua, userstream_url + "/user.json");
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}
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oauth_success() {
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P3(("twitter/client:oauth_success()\n"))
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save();
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mixed *waiter;
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while (qSize(ME)) {
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waiter = shift(ME);
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funcall(waiter[0]);
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}
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}
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oauth_error() {
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P3(("twitter/client:oauth_error()\n"))
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call_out(#'oauth, 60); //');
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2010-02-23 12:10:06 +00:00
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}
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