1 // direct_download_links - Add direct download links
4 // Copyright (C) 2011 Antonio Ospite <ospite@studenti.unina.it>
5 // Released under the GPL license
6 // http://www.gnu.org/copyleft/gpl.html
8 // --------------------------------------------------------------------
10 // This is a Greasemonkey user script.
12 // To install, you need Greasemonkey: https://addons.mozilla.org/en-US/firefox/addon/748
13 // Then restart Firefox and revisit this script.
14 // Under Tools, there will be a new menu item to "Install User Script".
15 // Accept the default configuration and install.
17 // To uninstall, go to Tools/Manage User Scripts,
18 // select "Direct Download Links", and click Uninstall.
20 // --------------------------------------------------------------------
23 // @name Direct Download Links
24 // @namespace http://git.ao2.it/GM_direct_download_links.git
25 // @description Add direct download links
26 // @include http://video.repubblica.it/*
27 // @include http://tv.repubblica.it/*
28 // @include http://trovacinema.repubblica.it/*
29 // @include http://www.kataweb.it/tvzap/*
30 // @include http://www.rai.tv/*
31 // @include http://soundcloud.com/*
37 * - find a way to use the same string as in the @include lines to match the
38 * current window.location. Look for something like GM_testUrl() which builds
39 * the regexp starting from a glob line.
40 * - use xpath instead of regexp like in http://a32.me/2009/11/greasemonkey/
41 * - use jquery, like shown in http://a32.me/2009/11/greasemonkey/
42 * - Support the "download" attribute for anchors:
43 * http://www.whatwg.org/specs/web-apps/current-work/multipage/links.html#downloading-resources
46 /* Fields supported by the "site" object.
49 * pageURL: the URL of the page we are modifying
50 * urlContainer: the element containing the URL to link
51 * urlRegexp: the regular expression for finding the URL, the first
52 * sub-pattern is taken as the URL
53 * linkDest: the element where to place the Direct Download link
58 * initCommand: a function called before the regExp is matched, this can
59 * be useful in cases when some action needs to be done in
60 * order to make the element containing the regExp be actually
61 * rendered. It must accept a 'site' parameter.
63 * onEvent: used to delay the urlRegexp matching to a certain event like
64 * 'DOMNodeInserted' useful when the URL is added by some javascript
65 * library. It has two fields:
67 * evt: the event we want to wait for (e.g. 'DOMNodeInserted')
69 * targetElement: the element in the event handler we want the
70 * urlRegexp is performed on.
72 * processURL: a function to process the URL before adding the Direct
73 * Downdload Link to the page, it must accept a 'site' and a
74 * 'URL' parameters and dispatch the UrlFetched to pass the
75 * modified URL to _add_link().
78 var supported_sites = [
80 locationRegexp: /^http:\/\/video\.repubblica\.it\/.*$/,
81 urlContainer: 'contA',
82 urlRegexp: /'pcUrl', '((http|mms):\/\/[^']*)'/,
86 locationRegexp: /^http:\/\/tv\.repubblica\.it\/.*$/,
87 urlContainer: 'boxPlayer',
88 urlRegexp: /'pcUrl', '((http|mms):\/\/[^']*)'/,
89 linkDest: 'box_embed',
92 locationRegexp: /^http:\/\/trovacinema\.repubblica\.it\/.*$/,
93 urlContainer: 'col-center',
94 urlRegexp: /'flvUrl', '((http|mms):\/\/[^']*)'/,
95 linkDest: 'col-center',
98 locationRegexp: /^http:\/\/www\.kataweb\.it\/tvzap\/.*$/,
99 urlContainer: 'tvzap_video',
100 urlRegexp: /'pcUrl', '((http|mms):\/\/[^']*)'/,
101 linkDest: 'playerCont',
104 locationRegexp: /^http:\/\/www\.rai\.tv\/.*$/,
105 initCommand: function(site) {
106 unsafeWindow.Silverlight.isInstalled = function(version) {
110 urlContainer: 'Player',
111 urlRegexp: /mediaUri=(http:\/\/[^,]*)/,
112 onEvent: { evt: 'DOMNodeInserted', targetElement: 'object' },
113 processURL: _rai_get_actual_url,
117 locationRegexp: /^http:\/\/soundcloud.com\/.*$/,
118 urlContainer: 'main-content-inner',
119 urlRegexp: /"streamUrl":"([^"]*)"/,
120 linkDest: 'main-content-inner',
124 /* Apply different rules to different sites */
125 for (i = 0; i < supported_sites.length; i++) {
126 var site = supported_sites[i];
128 var result = window.location.href.match(site.locationRegexp);
130 if (site.initCommand) {
131 site.initCommand(site);
133 direct_download_link_add(window.location.href, site);
138 * Add a Direct Download link on the page for the specified URL
140 * @param: a 'site' object described above.
142 * @return: null on error, true on success
144 function direct_download_link_add(pageURL, site) {
145 var element = document.getElementById(site.urlContainer);
147 DDL_log('DirectDL (' + site.pageURL + '): Cannot find the element ' + site.urlContainer + ' containing the URL.');
151 document.addEventListener('UrlFetched', _add_link, true);
153 // This is used for sites adding the URL to the DOM after DOMContentLoaded,
154 // for example by some javascript library (like Silverlight.js on rai.tv).
156 element.addEventListener(site.onEvent.evt, function(e) {
157 if (site.onEvent.targetElement &&
158 e.target.tagName.toLowerCase() != site.onEvent.targetElement) {
159 DDL_log('DirectDL (' + site.pageURL + '): skipping element ' + e.target.tagName);
162 _get_URL(site, element);
167 _get_URL(site, element);
170 function _get_URL(site, element) {
171 var content = element.innerHTML;
173 DDL_log('DirectDL (' + site.pageURL + '): content is null, cannot find URL.');
177 var matches = content.match(site.urlRegexp);
178 if (!matches || matches.length < 2 || !matches[1]) {
179 DDL_log('DirectDL (' + site.pageURL + '): URL not found, check the urlRegexp');
182 var URL = matches[1];
184 DDL_log('DirectDL (' + site.pageURL + '): cannot get the URL.');
188 if (site.processURL) {
189 site.processURL(site, URL);
193 var evt = document.createEvent('Event');
194 evt.initEvent('UrlFetched', true, true);
197 document.dispatchEvent(evt);
200 function _add_link(e) {
204 var destination = document.getElementById(site.linkDest);
206 DDL_log('DirectDl (' + site.pageURL + '): Cannot add the direct download link.');
210 // Check if we added the link already, if so just update the href attribute.
211 // This is useful when _get_URL() is called on async events.
212 var download_link = document.getElementById('GM_direct_downaload_link');
214 download_link.setAttribute('href', URL);
216 download_link = document.createElement('a');
217 download_link.textContent = 'Direct Link';
218 download_link.setAttribute('id', 'GM_direct_downaload_link');
219 download_link.setAttribute('href', URL);
220 var style = 'background-color: white; color: blue;';
221 style += ' border: 2px solid red;'
222 style += ' float: right; font-size: large;';
223 style += ' padding: .5em; margin: 1em;'
224 style += ' position: relative; z-index: 1000;'
225 download_link.setAttribute('style', style);
227 destination.insertBefore(download_link, destination.firstChild);
231 function DDL_log(message) {
240 function _rai_get_actual_url(site, URL) {
242 // SmoothStreaming manifest files get added without processing, for now:
243 if (URL.match(/.*\.csm$/)) {
244 var evt = document.createEvent('Event');
245 evt.initEvent('UrlFetched', true, true);
248 document.dispatchEvent(evt);
252 // http://www.neaveru.com/wordpress/index.php/2008/05/09/greasemonkey-bug-domnodeinserted-event-doesnt-allow-gm_xmlhttprequest/
253 setTimeout( function() {
256 // XXX A custom header. This is the "clever" trick Rai uses to ensure
257 // the content is accessed by www.rai.tv only...
258 headers: {'viaurl': 'www.rai.tv'},
260 onload: function(response) {
261 text = response.responseText;
262 text = text.replace(/&/g, '&')
263 parser = new DOMParser();
264 xmlDoc = parser.parseFromString(text, "text/xml");
266 ref = xmlDoc.getElementsByTagName('REF');
267 if (ref.length > 0) {
268 href = ref[0].getAttribute('HREF');;
270 var evt = document.createEvent('Event');
271 evt.initEvent('UrlFetched', true, true);
274 document.dispatchEvent(evt);