CyTube/lib/get-info.js

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JavaScript
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var http = require("http");
var https = require("https");
var cheerio = require('cheerio');
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var Logger = require("./logger.js");
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var Media = require("./media");
var CustomEmbedFilter = require("./customembed").filter;
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var Server = require("./server");
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var Config = require("./config");
var ffmpeg = require("./ffmpeg");
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/*
* Preference map of quality => youtube formats.
* see https://en.wikipedia.org/wiki/Youtube#Quality_and_codecs
*
* Prefer WebM over MP4, ignore other codecs (e.g. FLV)
*/
const GOOGLE_PREFERENCE = {
"hd1080": [46, 37],
"hd720": [45, 22],
"large": [44, 59],
"medium": [43, 18, 34] // 34 is 360p FLV as a last-ditch
};
const CONTENT_TYPES = {
43: "webm",
44: "webm",
45: "webm",
46: "webm",
18: "mp4",
22: "mp4",
37: "mp4",
59: "mp4",
34: "flv"
};
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var urlRetrieve = function (transport, options, callback) {
var req = transport.request(options, function (res) {
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res.on("error", function (err) {
Logger.errlog.log("HTTP response " + options.host + options.path + " failed: "+
err);
callback(503, "");
});
var buffer = "";
res.setEncoding("utf-8");
res.on("data", function (chunk) {
buffer += chunk;
});
res.on("end", function () {
callback(res.statusCode, buffer);
});
});
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req.on("error", function (err) {
Logger.errlog.log("HTTP request " + options.host + options.path + " failed: " +
err);
callback(503, "");
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});
req.end();
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};
var Getters = {
/* youtube.com */
yt: function (id, callback) {
var sv = Server.getServer();
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var m = id.match(/([\w-]{11})/);
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if (m) {
id = m[1];
} else {
callback("Invalid ID", null);
return;
}
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var options = {
host: "gdata.youtube.com",
port: 443,
path: "/feeds/api/videos/" + id + "?v=2&alt=json",
method: "GET",
dataType: "jsonp",
timeout: 1000
};
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if (Config.get("youtube-v2-key")) {
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options.headers = {
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"X-Gdata-Key": "key=" + Config.get("youtube-v2-key")
};
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}
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urlRetrieve(https, options, function (status, data) {
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switch (status) {
case 200:
break; /* Request is OK, skip to handling data */
case 400:
return callback("Invalid request", null);
case 403:
return callback("Private video", null);
case 404:
return callback("Video not found", null);
case 500:
case 503:
return callback("Service unavailable", null);
default:
return callback("HTTP " + status, null);
}
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var buffer = data;
try {
data = JSON.parse(data);
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/* Check for embedding restrictions */
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if (data.entry.yt$accessControl) {
var ac = data.entry.yt$accessControl;
for (var i = 0; i < ac.length; i++) {
if (ac[i].action === "embed") {
if (ac[i].permission === "denied") {
callback("Embedding disabled", null);
return;
}
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break;
}
}
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}
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var seconds = data.entry.media$group.yt$duration.seconds;
var title = data.entry.title.$t;
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var meta = {};
/* Check for country restrictions */
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if (data.entry.media$group.media$restriction) {
var rest = data.entry.media$group.media$restriction;
if (rest.length > 0) {
if (rest[0].relationship === "deny") {
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meta.restricted = rest[0].$t;
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}
}
}
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var media = new Media(id, title, seconds, "yt", meta);
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callback(false, media);
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} catch (e) {
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// Gdata version 2 has the rather silly habit of
// returning error codes in XML when I explicitly asked
// for JSON
var m = buffer.match(/<internalReason>([^<]+)<\/internalReason>/);
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if (m === null)
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m = buffer.match(/<code>([^<]+)<\/code>/);
var err = e;
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if (m) {
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if(m[1] === "too_many_recent_calls") {
err = "YouTube is throttling the server right "+
"now for making too many requests. "+
"Please try again in a moment.";
} else {
err = m[1];
}
}
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callback(err, null);
}
});
},
/* youtube.com playlists */
yp: function (id, callback, url) {
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/**
* NOTE: callback may be called multiple times, once for each <= 25 video
* batch of videos in the list. It will be called in order.
*/
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var m = id.match(/([\w-]+)/);
if (m) {
id = m[1];
} else {
callback("Invalid ID", null);
return;
}
var path = "/feeds/api/playlists/" + id + "?v=2&alt=json";
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/**
* NOTE: the third parameter, url, is used to chain this retriever
* multiple times to get all the videos from a playlist, as each
* request only returns 25 videos.
*/
if (url !== undefined) {
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path = "/" + url.split("gdata.youtube.com")[1];
}
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var options = {
host: "gdata.youtube.com",
port: 443,
path: path,
method: "GET",
dataType: "jsonp",
timeout: 1000
};
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if (Config.get("youtube-v2-key")) {
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options.headers = {
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"X-Gdata-Key": "key=" + Config.get("youtube-v2-key")
};
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}
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urlRetrieve(https, options, function (status, data) {
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switch (status) {
case 200:
break; /* Request is OK, skip to handling data */
case 400:
return callback("Invalid request", null);
case 403:
return callback("Private playlist", null);
case 404:
return callback("Playlist not found", null);
case 500:
case 503:
return callback("Service unavailable", null);
default:
return callback("HTTP " + status, null);
}
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try {
data = JSON.parse(data);
var vids = [];
for(var i in data.feed.entry) {
try {
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/**
* FIXME: This should probably check for embed restrictions
* and country restrictions on each video in the list
*/
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var item = data.feed.entry[i];
var id = item.media$group.yt$videoid.$t;
var title = item.title.$t;
var seconds = item.media$group.yt$duration.seconds;
var media = new Media(id, title, seconds, "yt");
vids.push(media);
} catch(e) {
}
}
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callback(false, vids);
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var links = data.feed.link;
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for (var i in links) {
if (links[i].rel === "next") {
/* Look up the next batch of videos from the list */
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Getters["yp"](id, callback, links[i].href);
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}
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}
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} catch (e) {
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callback(e, null);
}
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});
},
/* youtube.com search */
ytSearch: function (terms, callback) {
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/**
* terms is a list of words from the search query. Each word must be
* encoded properly for use in the request URI
*/
for (var i in terms) {
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terms[i] = encodeURIComponent(terms[i]);
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}
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var query = terms.join("+");
var options = {
host: "gdata.youtube.com",
port: 443,
path: "/feeds/api/videos/?q=" + query + "&v=2&alt=json",
method: "GET",
dataType: "jsonp",
timeout: 1000
};
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if (Config.get("youtube-v2-key")) {
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options.headers = {
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"X-Gdata-Key": "key=" + Config.get("youtube-v2-key")
};
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}
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urlRetrieve(https, options, function (status, data) {
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if (status !== 200) {
callback("YouTube search: HTTP " + status, null);
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return;
}
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try {
data = JSON.parse(data);
var vids = [];
for(var i in data.feed.entry) {
try {
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/**
* FIXME: This should probably check for embed restrictions
* and country restrictions on each video in the list
*/
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var item = data.feed.entry[i];
var id = item.media$group.yt$videoid.$t;
var title = item.title.$t;
var seconds = item.media$group.yt$duration.seconds;
var media = new Media(id, title, seconds, "yt");
media.thumb = item.media$group.media$thumbnail[0];
vids.push(media);
} catch(e) {
}
}
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callback(false, vids);
} catch(e) {
callback(e, null);
}
});
},
/* vimeo.com */
vi: function (id, callback) {
var m = id.match(/([\w-]+)/);
if (m) {
id = m[1];
} else {
callback("Invalid ID", null);
return;
}
if (Config.get("vimeo-oauth.enabled")) {
return Getters.vi_oauth(id, callback);
}
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var options = {
host: "vimeo.com",
port: 443,
path: "/api/v2/video/" + id + ".json",
method: "GET",
dataType: "jsonp",
timeout: 1000
};
urlRetrieve(https, options, function (status, data) {
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switch (status) {
case 200:
break; /* Request is OK, skip to handling data */
case 400:
return callback("Invalid request", null);
case 403:
return callback("Private video", null);
case 404:
return callback("Video not found", null);
case 500:
case 503:
return callback("Service unavailable", null);
default:
return callback("HTTP " + status, null);
}
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try {
data = JSON.parse(data);
data = data[0];
var seconds = data.duration;
var title = data.title;
var media = new Media(id, title, seconds, "vi");
callback(false, media);
} catch(e) {
var err = e;
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/**
* This should no longer be necessary as the outer handler
* checks for HTTP 404
*/
if (buffer.match(/not found/))
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err = "Video not found";
callback(err, null);
}
});
},
vi_oauth: function (id, callback) {
var OAuth = require("oauth");
var oa = new OAuth.OAuth(
"https://vimeo.com/oauth/request_token",
"https://vimeo.com/oauth/access_token",
Config.get("vimeo-oauth.consumer-key"),
Config.get("vimeo-oauth.secret"),
"1.0",
null,
"HMAC-SHA1"
);
oa.get("https://vimeo.com/api/rest/v2?format=json" +
"&method=vimeo.videos.getInfo&video_id=" + id,
null,
null,
function (err, data, res) {
if (err) {
return callback(err, null);
}
try {
data = JSON.parse(data);
if (data.stat !== "ok") {
return callback(data.err.msg, null);
}
var video = data.video[0];
if (video.embed_privacy !== "anywhere") {
return callback("Embedding disabled", null);
}
var id = video.id;
var seconds = parseInt(video.duration);
var title = video.title;
callback(null, new Media(id, title, seconds, "vi"));
} catch (e) {
callback("Error handling Vimeo response", null);
}
});
},
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/* dailymotion.com */
dm: function (id, callback) {
var m = id.match(/([\w-]+)/);
if (m) {
id = m[1].split("_")[0];
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} else {
callback("Invalid ID", null);
return;
}
var options = {
host: "api.dailymotion.com",
port: 443,
path: "/video/" + id + "?fields=duration,title",
method: "GET",
dataType: "jsonp",
timeout: 1000
};
urlRetrieve(https, options, function (status, data) {
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switch (status) {
case 200:
break; /* Request is OK, skip to handling data */
case 400:
return callback("Invalid request", null);
case 403:
return callback("Private video", null);
case 404:
return callback("Video not found", null);
case 500:
case 503:
return callback("Service unavailable", null);
default:
return callback("HTTP " + status, null);
}
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try {
data = JSON.parse(data);
var title = data.title;
var seconds = data.duration;
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/**
* This is a rather hacky way to indicate that a video has
* been deleted...
*/
if (title === "Deleted video" && seconds === 10) {
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callback("Video not found", null);
return;
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}
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var media = new Media(id, title, seconds, "dm");
callback(false, media);
} catch(e) {
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callback(e, null);
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}
});
},
/* soundcloud.com */
sc: function (id, callback) {
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/* TODO: require server owners to register their own API key, put in config */
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const SC_CLIENT = "2e0c82ab5a020f3a7509318146128abd";
var m = id.match(/([\w-\/\.:]+)/);
if (m) {
id = m[1];
} else {
callback("Invalid ID", null);
return;
}
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var options = {
host: "api.soundcloud.com",
port: 443,
path: "/resolve.json?url=" + id + "&client_id=" + SC_CLIENT,
method: "GET",
dataType: "jsonp",
timeout: 1000
};
urlRetrieve(https, options, function (status, data) {
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switch (status) {
case 200:
case 302:
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break; /* Request is OK, skip to handling data */
case 400:
return callback("Invalid request", null);
case 403:
return callback("Private sound", null);
case 404:
return callback("Sound not found", null);
case 500:
case 503:
return callback("Service unavailable", null);
default:
return callback("HTTP " + status, null);
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}
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var track = null;
try {
data = JSON.parse(data);
track = data.location;
} catch(e) {
callback(e, null);
return;
}
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var options2 = {
host: "api.soundcloud.com",
port: 443,
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path: track,
method: "GET",
dataType: "jsonp",
timeout: 1000
};
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/**
* There has got to be a way to directly get the data I want without
* making two requests to Soundcloud...right?
* ...right?
*/
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urlRetrieve(https, options2, function (status, data) {
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switch (status) {
case 200:
break; /* Request is OK, skip to handling data */
case 400:
return callback("Invalid request", null);
case 403:
return callback("Private sound", null);
case 404:
return callback("Sound not found", null);
case 500:
case 503:
return callback("Service unavailable", null);
default:
return callback("HTTP " + status, null);
}
try {
data = JSON.parse(data);
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var seconds = data.duration / 1000;
var title = data.title;
var meta = {};
if (data.sharing === "private" && data.embeddable_by === "all") {
meta.scuri = data.uri;
}
var media = new Media(id, title, seconds, "sc", meta);
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callback(false, media);
} catch(e) {
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callback(e, null);
}
});
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});
},
/* livestream.com */
li: function (id, callback) {
var m = id.match(/([\w-]+)/);
if (m) {
id = m[1];
} else {
callback("Invalid ID", null);
return;
}
var title = "Livestream.com - " + id;
var media = new Media(id, title, "--:--", "li");
callback(false, media);
},
/* twitch.tv */
tw: function (id, callback) {
var m = id.match(/([\w-]+)/);
if (m) {
id = m[1];
} else {
callback("Invalid ID", null);
return;
}
var title = "Twitch.tv - " + id;
var media = new Media(id, title, "--:--", "tw");
callback(false, media);
},
/* ustream.tv */
us: function (id, callback) {
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/**
*2013-09-17
* They couldn't fucking decide whether channels should
* be at http://www.ustream.tv/channel/foo or just
* http://www.ustream.tv/foo so they do both.
* [](/cleese)
*/
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var m = id.match(/([^\?&#]+)|(channel\/[^\?&#]+)/);
if (m) {
id = m[1];
} else {
callback("Invalid ID", null);
return;
}
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var options = {
host: "www.ustream.tv",
port: 80,
path: "/" + id,
method: "GET",
timeout: 1000
};
urlRetrieve(http, options, function (status, data) {
if(status !== 200) {
callback("Ustream HTTP " + status, null);
return;
}
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/**
* Regexing the ID out of the HTML because
* Ustream's API is so horribly documented
* I literally could not figure out how to retrieve
* this information.
*
* [](/eatadick)
*/
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var m = data.match(/cid":([0-9]+)/);
if(m) {
var title = "Ustream.tv - " + id;
var media = new Media(m[1], title, "--:--", "us");
callback(false, media);
} else {
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callback(true, null);
}
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});
},
/* JWPlayer */
jw: function (id, callback) {
var title = "JWPlayer - " + id;
var media = new Media(id, title, "--:--", "jw");
callback(false, media);
},
/* rtmp stream */
rt: function (id, callback) {
var title = "Livestream";
var media = new Media(id, title, "--:--", "rt");
callback(false, media);
},
/* imgur.com albums */
im: function (id, callback) {
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/**
* TODO: Consider deprecating this in favor of custom embeds
*/
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var m = id.match(/([\w-]+)/);
if (m) {
id = m[1];
} else {
callback("Invalid ID", null);
return;
}
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var title = "Imgur Album - " + id;
var media = new Media(id, title, "--:--", "im");
callback(false, media);
},
/* custom embed */
cu: function (id, callback) {
id = CustomEmbedFilter(id);
var media = new Media(id, "Custom Media", "--:--", "cu");
callback(false, media);
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},
/* google docs */
gd: function (id, callback) {
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/* WARNING: hacks inbound */
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var options = {
host: "docs.google.com",
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path: "/file/d/" + id + "/get_video_info?sle=true",
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port: 443
};
urlRetrieve(https, options, function (status, res) {
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switch (status) {
case 200:
break; /* Request is OK, skip to handling data */
case 400:
return callback("Invalid request", null);
case 403:
return callback("Private video", null);
case 404:
return callback("Video not found", null);
case 500:
case 503:
return callback("Service unavailable", null);
default:
return callback("HTTP " + status, null);
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}
try {
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var data = {};
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res.split("&").forEach(function (urlparam) {
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var pair = urlparam.split("=").map(decodeURIComponent).map(
function (s) { return s.replace(/\+/g, ' '); });
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data[pair[0]] = pair[1];
});
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if (data.hasOwnProperty("reason")) {
var reason = data.reason;
if (reason.indexOf("Unable to play this video at this time.") === 0) {
reason = "There is currently a bug with Google Drive which prevents playback " +
"of videos 1 hour long or longer.";
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} else if (reason.indexOf(
"You must be signed in to access this video") >= 0) {
reason = "This video is not shared properly";
}
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return callback(reason);
}
if (!data.hasOwnProperty("title")) {
return callback("Returned HTML is missing the video title. Are you " +
"sure the video is done processing?");
}
if (!data.hasOwnProperty("length_seconds")) {
return callback("Returned HTML is missing the video duration. Are you " +
"sure the video is done processing?");
}
var title = data.title;
var seconds = parseInt(data.length_seconds);
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var videos = {};
data.fmt_stream_map.split(",").forEach(function (stream) {
var parts = stream.split("|");
videos[parts[0]] = parts[1];
});
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var direct = {};
for (var key in GOOGLE_PREFERENCE) {
for (var i = 0; i < GOOGLE_PREFERENCE[key].length; i++) {
var format = GOOGLE_PREFERENCE[key][i];
if (format in videos) {
direct[key] = {
url: videos[format],
contentType: CONTENT_TYPES[format]
};
break;
}
}
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}
if (Object.keys(direct).length === 0) {
return callback("No valid links could be extracted", null);
}
callback(null, new Media(id, title, seconds, "gd", { gpdirect: direct }));
} catch (e) {
return callback("Failed to parse Google Docs output", null);
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}
});
},
/* ffmpeg for raw files */
fi: function (id, cb) {
ffmpeg.query(id, function (err, data) {
if (err) {
return cb(err);
}
var m = new Media(id, data.title, data.duration, "fi", {
bitrate: data.bitrate,
codec: data.codec
});
cb(null, m);
});
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},
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/*
* Google+ videos
*
* Also known as Picasa Web Albums.
*
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*/
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gp: function (id, cb) {
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var idparts = id.split("_");
if (idparts.length !== 3) {
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return cb("Invalid Google+ video ID");
}
var options = {
host: "picasaweb.google.com",
path: '/data/feed/api/user/'+idparts[0]+'/albumid/'+idparts[1]+'/photoid/'+idparts[2]+'?kind=tag',
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port: 443
};
urlRetrieve(https, options, function (status, res) {
switch (status) {
case 200:
break; /* Request is OK, skip to handling data */
case 400:
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return cb("Invalid request", null);
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case 403:
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return cb("Private video", null);
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case 404:
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return cb("Video not found", null);
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case 500:
case 503:
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return cb("Service unavailable", null);
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default:
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return cb("HTTP " + status, null);
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}
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try {
var $ = cheerio.load(res, { xmlMode: true });
switch ($("gphoto\\:videostatus").text()) {
case "final":
break; /* Incoming Fun. */
case "pending":
return cb("The video is still being processed.", null);
case "failed":
return cb("A processing error has occured and the video should be deleted.", null);
case "ready":
return cb("The video has been processed but still needs a thumbnail.", null);
}
var duration = parseInt($("gphoto\\:originalvideo").attr("duration"),10);
var title = $("media\\:title").text();
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var videos = {};
$('media\\:content[medium="video"]').each(function(index, element){
var url = $(this).attr("url")
var type = url.match(/itag=(\d\d)/)[1]
videos[type] = {
format: type,
link: url
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};
});
$ = null;
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var direct = {};
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for (var key in GOOGLE_PREFERENCE) {
for (var i = 0; i < GOOGLE_PREFERENCE[key].length; i++) {
var format = GOOGLE_PREFERENCE[key][i];
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if (format in videos) {
direct[key] = {
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url: videos[format].link,
contentType: CONTENT_TYPES[format]
};
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break;
}
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}
}
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if (Object.keys(direct).length === 0) {
return cb("Unable to retrieve video data from Google+. Check that " +
"the album exists and is shared publicly.");
} else if (!title) {
return cb("Unable to retrieve title from Google+. Check that " +
"the album exists and is shared publicly.");
} else if (!duration) {
return cb("Unable to retreive duration from Google+. This might be " +
"because the video is still processing.");
}
var media = new Media(id, title, duration, "gp", { gpdirect: direct });
cb(null, media);
} catch (e) {
cb("Unknown error");
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Logger.errlog.log("Unknown error for Google+ ID " + id + ": " + e.stack);
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}
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});
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},
/* hitbox.tv */
hb: function (id, callback) {
var m = id.match(/([\w-]+)/);
if (m) {
id = m[1];
} else {
callback("Invalid ID", null);
return;
}
var title = "Hitbox.tv - " + id;
var media = new Media(id, title, "--:--", "hb");
callback(false, media);
},
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};
/**
* Function to workaround Vimeo being a dick and blocking my domain from embeds.
* Retrieves the player page and extracts the direct links to the MP4 encoded videos.
*/
function vimeoWorkaround(id, cb) {
if (typeof cb !== "function") {
return;
}
var failcount = 0;
var inner = function () {
var options = {
host: "player.vimeo.com",
path: "/video/" + id,
headers: {
"User-Agent": "Mozilla/5.0 (X11; Linux x86_64; rv:29.0) Gecko/20100101 Firefox/29.0",
"Referrer": "player.vimeo.com"
}
};
var parse = function (data) {
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var i = data.indexOf("{\"cdn_url\"");
if (i === -1) {
setImmediate(function () {
cb({});
});
return;
}
var j = data.indexOf("};", i);
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var json = data.substring(i, j+1);
try {
json = JSON.parse(json);
if (!json.request.files) {
setImmediate(function () {
cb({});
});
return;
}
var codec = json.request.files.codecs[0];
var files = json.request.files[codec];
setImmediate(function () {
cb(files);
});
} catch (e) {
// This shouldn't happen due to the user-agent, but just in case
if (data.indexOf("crawler") !== -1) {
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Logger.syslog.log("Warning: vimdeoWorkaround got crawler response");
failcount++;
if (failcount > 4) {
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Logger.errlog.log("vimeoWorkaround got bad response 5 times!"+
" Giving up.");
setImmediate(function () {
cb({});
});
} else {
setImmediate(function () {
inner();
});
}
return;
} else if (data.indexOf("This video does not exist.") !== -1) {
cb({});
return;
} else if (data.indexOf("Because of its privacy settings, this video cannot be played here.") !== -1) {
cb({});
}
Logger.errlog.log("Vimeo workaround error: ");
Logger.errlog.log(e);
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Logger.errlog.log("http://vimeo.com/" + id);
setImmediate(function () {
cb({});
});
}
};
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urlRetrieve(http, options, function (status, buffer) {
if (status !== 200) {
setImmediate(function () {
cb({});
});
return;
}
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parse(buffer);
});
};
inner();
}
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module.exports = {
Getters: Getters,
getMedia: function (id, type, callback) {
if(type in this.Getters) {
this.Getters[type](id, callback);
} else {
callback("Unknown media type '" + type + "'", null);
}
},
vimeoWorkaround: vimeoWorkaround
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};