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Inject2Download

Simple media download script

当前为 2016-08-15 提交的版本，查看 最新版本。

  1. // ==UserScript==
  2. // @name         Inject2Download
  3. // @namespace    http://lkubuntu.wordpress.com/
  4. // @version      0.2.3
  5. // @description  Simple media download script
  6. // @author       Anonymous Meerkat
  7. // @include      *
  8. // @grant        none
  9. // @run-at       document-start
  10. // ==/UserScript==
  11.  
  12. (function() {
  13.     "use strict";
  14.  
  15.     // Helper functions
  16.     function i2d_show_url(namespace, url, description) {
  17.         function get_absolute_url(url) {
  18.             var a = document.createElement('a');
  19.             a.href = url;
  20.             return a.href;
  21.         }
  22.  
  23.         if (!description)
  24.             description = "";
  25.  
  26.         if (typeof url !== "string" || url.replace("\s", "").length === 0)
  27.             return;
  28.  
  29.         if (url.match(/^mediasource:/))
  30.             return;
  31.  
  32.         url = get_absolute_url(url);
  33.  
  34.         if (!("i2d_url_list" in window))
  35.             window.i2d_url_list = [];
  36.  
  37.         for (var i = 0; i < i2d_url_list.length; i++) {
  38.             if (i2d_url_list[i][0] === namespace &&
  39.                 i2d_url_list[i][1] === url &&
  40.                 i2d_url_list[i][2] === description)
  41.                     return;
  42.         }
  43.  
  44.  
  45.         i2d_url_list.push([namespace, url, description]);
  46.  
  47.         var newurl = decodeURIComponent(url);
  48.  
  49.         var text = "[" + namespace + "] " + description + ": ";
  50.  
  51.         console.log("[i2d] " + text + newurl);
  52.  
  53.         var el = document.getElementById("i2d-popup");
  54.         if (!el) {
  55.             el = document.createElement("div");
  56.             //el.style.position = "absolute";
  57.             el.style.width = "max(60%, 100em)";
  58.             el.style.height = "max(60%, 100em)";
  59.             el.style.maxWidth = "100%";
  60.             el.style.maxHeight = "100%";
  61.             el.style.background = "white";
  62.             el.style.top = "0px";
  63.             el.style.left = "0px";
  64.             el.style.zIndex = 999999;
  65.             el.style.color = "black";
  66.             el.style.overflow = "scroll";
  67.             el.ondblclick = function() {
  68.                 el.parentElement.removeChild(el);
  69.             };
  70.             el.innerHTML = "Double click to close<br />";
  71.             el.id = "i2d-popup";
  72.             document.body.appendChild(el);
  73.         }
  74.         el.innerHTML += text + "<a href='" + newurl + "' style='color:blue'>" + newurl + "</a><br />";
  75.  
  76.         // XXX: why is this needed? test: http://playbb.me/embed.php?w=718&h=438&vid=at/nw/flying_witch_-_01.mp4, animeplus.tv
  77.         document.body.removeChild(el);
  78.         el.style.position = "absolute";
  79.         document.body.appendChild(el);
  80.     }
  81.  
  82.  
  83.     // Injecting functions
  84.     var get_script_str = function(f) {
  85.         return f.toString().replace(/^function.*{|}$/g, '');
  86.     };
  87.  
  88.     function add_script(s, el) {
  89.         var script_body = "(function() {\n" + s + "\n})();";
  90.         var myscript = document.createElement('script');
  91.         myscript.className = "i2d";
  92.         myscript.innerHTML = script_body;
  93.         if (el) {
  94.             el.appendChild(myscript);
  95.         } else {
  96.             document.head.appendChild(myscript);
  97.         }
  98.     }
  99.  
  100.     function inject(variable, newvalue, aliases) {
  101.         console.log("[i2d] injecting " + variable);
  102.         if (!aliases)
  103.             aliases = [];
  104.  
  105.         add_script(i2d_show_url.toString() + "\n" +
  106.                    "if (!(window." + variable + ".INJECTED)) {\n" +
  107.                    "var oldvariable = window." + variable + ";\n" +
  108.                    "var oldvariable_keys = Object.keys(oldvariable);\n" +
  109.                    "window." + variable + " = " + newvalue.toString() + ";\n" +
  110.                    "for (var i = 0; i < oldvariable_keys.length; i++) {\n" +
  111.                    "    window." + variable + "[oldvariable_keys[i]] = oldvariable[oldvariable_keys[i]];\n" +
  112.                    "}\n" +
  113.                    "window." + variable + ".INJECTED = true;\n" +
  114.                    "var aliases = " + JSON.stringify(aliases) + ";\n" +
  115.                    "for (var i = 0; i < aliases.length; i++) {\n" +
  116.                    "    if (aliases[i] in window && window[aliases[i]] == oldvariable)" +
  117.                    "        window[aliases[i]] = window." + variable + "\n" +
  118.                    "}\n" +
  119.                    "}");
  120.     }
  121.  
  122.     function inject_jquery_plugin(name, value) {
  123.         if (!("jQuery" in window) ||
  124.             !("fn" in window.jQuery) ||
  125.             !(name in window.jQuery.fn) ||
  126.             window.jQuery.fn[name].INJECTED)
  127.             return;
  128.  
  129.         inject("jQuery.fn." + name, value);
  130.     }
  131.  
  132.  
  133.     // Main code
  134.     function i2d_main(e) {
  135.         if (e) {
  136.             if (!e.tagName || e.tagName.toLowerCase() !== "script")
  137.                 return;
  138.             if ((e.className === "i2d")) {
  139.                 return;
  140.             }
  141.         }
  142.  
  143.         if ("soundManager" in window && !window.soundManager.INJECTED) {
  144.             inject("soundManager.createSound", function(arg1, arg2) {
  145.                 if (typeof arg1 === "string")
  146.                     i2d_show_url("soundManager", arg2);
  147.                 else
  148.                     i2d_show_url("soundManager", arg1.url);
  149.  
  150.                 return oldvariable.apply(this, arguments);
  151.             });
  152.         }
  153.  
  154.         if ("jwplayer" in window && !window.jwplayer.INJECTED) {
  155.             inject("jwplayer", function() {
  156.                 var result = oldvariable.apply(this, arguments);
  157.  
  158.                 var check_sources = function(x) {
  159.                     if (typeof x === "object") {
  160.                         if (x instanceof Array) {
  161.                             for (var i = 0; i < x.length; i++) {
  162.                                 check_sources(x[i]);
  163.                             }
  164.                             return;
  165.                         }
  166.  
  167.                         var label = "";
  168.  
  169.                         if ("title" in x)
  170.                             label += "[" + x.title + "]";
  171.  
  172.                         if ("label" in x)
  173.                             label += "[" + x.label + "]";
  174.  
  175.                         if ("streamer" in x) {
  176.                             i2d_show_url("jwplayer", x.streamer, "[stream]" + label);
  177.                         }
  178.  
  179.                         if ("file" in x) {
  180.                             i2d_show_url("jwplayer", x.file, label);
  181.                         }
  182.  
  183.                         if ("sources" in x) {
  184.                             check_sources(x.sources);
  185.                         }
  186.  
  187.                         if ("playlist" in x) {
  188.                             check_sources(x.playlist);
  189.                         }
  190.                     } else if (typeof x === "string") {
  191.                         i2d_show_url("jwplayer", x);
  192.                     }
  193.                 };
  194.  
  195.                 if ("setup" in result) {
  196.                     var old_jwplayer_setup = result.setup;
  197.                     result.setup = function() {
  198.                         if (typeof arguments[0] === "object") {
  199.                             var x = arguments[0];
  200.  
  201.                             if ("modes" in x) {
  202.                                 for (var i = 0; i < x.modes.length; i++) {
  203.                                     // TODO: support more?
  204.                                     if ("type" in x.modes[i] && x.modes[i].type === "html5") {
  205.                                         if ("config" in x.modes[i] && "file" in x.modes[i].config) {
  206.                                             check_sources(x.modes[i].config);
  207.                                         }
  208.                                     }
  209.                                 }
  210.                             }
  211.  
  212.                             check_sources(x);
  213.                         }
  214.  
  215.                         return old_jwplayer_setup.apply(this, arguments);
  216.                     };
  217.                 }
  218.  
  219.                 if ("load" in result) {
  220.                     var old_jwplayer_load = result.load;
  221.                     result.load = function() {
  222.                         check_sources(arguments[0]);
  223.                         return old_jwplayer_load.apply(this, arguments);
  224.                     };
  225.                 }
  226.  
  227.                 if ("on" in result) {
  228.                     result.on('playlistItem', function(item) {
  229.                         check_sources(item.item);
  230.                     });
  231.  
  232.                     var old_jwplayer_on = result.on;
  233.                     result.on = function() {
  234.                         if (arguments[0] === "adBlock")
  235.                             return;
  236.  
  237.                         return old_jwplayer_on.apply(this, arguments);
  238.                     }
  239.                 }
  240.  
  241.                 return result;
  242.             });
  243.         }
  244.  
  245.         if ("flowplayer" in window && !window.flowplayer.INJECTED) {
  246.             inject("flowplayer", function() {
  247.                 var obj_baseurl = null;
  248.                 var els = [];
  249.  
  250.                 function get_url(x) {
  251.                     x = decodeURIComponent(x);
  252.  
  253.                     if (obj_baseurl) {
  254.                         if (x.match(/^[a-z]*:\/\//)) {
  255.                             return x;
  256.                         } else {
  257.                             return obj_baseurl + "/" + x;
  258.                         }
  259.                     } else {
  260.                         return x;
  261.                     }
  262.                 };
  263.  
  264.                 function check_sources(x, els, label) {
  265.                     if (typeof x === "string") {
  266.                         if (!x.match(/\.xml$/))
  267.                             i2d_show_url("flowplayer", get_url(x), label);
  268.  
  269.                         return;
  270.                     }
  271.  
  272.                     if (x instanceof Array) {
  273.                         for (var i = 0; i < x.length; i++) {
  274.                             check_sources(x[i], els, label);
  275.                         }
  276.                         return;
  277.                     }
  278.  
  279.                     if (typeof x !== "object")
  280.                         return;
  281.  
  282.                     label = "";
  283.  
  284.                     if ("title" in x)
  285.                         label += "[" + x.title + "]";
  286.  
  287.                     if ("clip" in x) {
  288.                         if ("baseUrl" in x.clip) {
  289.                             obj_baseurl = x.clip.baseUrl;
  290.  
  291.                             for (var i = 0; i < els.length; i++) {
  292.                                 els[i].i2d_baseurl = obj_baseurl;
  293.                             }
  294.                         }
  295.  
  296.                         check_sources(x.clip, els, label);
  297.                     }
  298.  
  299.                     if ("sources" in x) {
  300.                         check_sources(x.sources, els, label);
  301.                     }
  302.  
  303.                     if ("playlist" in x) {
  304.                         check_sources(x.playlist, els, label);
  305.                     }
  306.  
  307.                     if ("url" in x) {
  308.                         check_sources(x.url, els, label);
  309.                     }
  310.  
  311.                     if ("src" in x) {
  312.                         check_sources(x.src, els. label);
  313.                     }
  314.  
  315.                     if ("bitrates" in x) {
  316.                         for (var j = 0; j < x.bitrates.length; j++) {
  317.                             if ("url" in x.bitrates[j]) {
  318.                                 var description = "";
  319.                                 if (x.bitrates[j].isDefault)
  320.                                     description += "default:";
  321.                                 if (x.bitrates[j].sd)
  322.                                     description += "sd:";
  323.                                 if (x.bitrates[j].hd)
  324.                                     description += "hd:";
  325.                                 if (x.bitrates[j].bitrate)
  326.                                     description += x.bitrates[j].bitrate;
  327.  
  328.                                 i2d_show_url("flowplayer", get_url(x.bitrates[j].url), description);
  329.                             }
  330.                         }
  331.                     }
  332.                 }
  333.  
  334.                 if (arguments.length >= 1) {
  335.                     els = [null];
  336.  
  337.                     if (typeof arguments[0] === "string") {
  338.                         try {
  339.                             els[0] = document.getElementById(arguments[0]);
  340.                         } catch(e) {
  341.                         }
  342.  
  343.                         try {
  344.                             if (!els[0])
  345.                                 els = document.querySelectorAll(arguments[0]);
  346.                         } catch(e) {
  347.                             els = [];
  348.                         }
  349.                     } else if (arguments[0] instanceof HTMLElement) {
  350.                         els = [arguments[0]];
  351.                     }
  352.                 }
  353.  
  354.                 for (var i = 0; i < els.length; i++) {
  355.                     if (!els[i] || !(els[i] instanceof HTMLElement))
  356.                         continue;
  357.  
  358.                     if ("i2d_baseurl" in els[i])
  359.                         obj_baseurl = els[i].i2d_baseurl;
  360.                 }
  361.  
  362.                 if (arguments.length >= 3 && typeof arguments[2] === "object") {
  363.                     check_sources(arguments[2], els);
  364.                 } else if (arguments.length >= 3 && typeof arguments[2] === "string") {
  365.                     i2d_show_url("flowplayer", get_url(arguments[2]));
  366.                 } else if (arguments.length === 2 && typeof arguments[1] === "object") {
  367.                     check_sources(arguments[1], els);
  368.                 } else if (arguments.length === 2 && typeof arguments[1] === "string") {
  369.                     i2d_show_url("flowplayer", get_url(arguments[1]));
  370.                 }
  371.  
  372.                 for (var i = 0; i < els.length; i++) {
  373.                     if (!els[i] || !(els[i] instanceof HTMLElement))
  374.                         continue;
  375.  
  376.                     var href = els[i].getAttribute("href");
  377.                     if (href) {
  378.                         i2d_show_url("flowplayer", get_url(href), "href");
  379.                     }
  380.                 }
  381.  
  382.                 var result = oldvariable.apply(this, arguments);
  383.  
  384.                 if (!result || typeof result !== "object")
  385.                     return result;
  386.  
  387.                 if ("addClip" in result) {
  388.                     var old_fplayer_addclip = result.addClip;
  389.                     result.addClip = function() {
  390.                         if (arguments.length > 0)
  391.                             check_sources(arguments[0], els);
  392.  
  393.                         return old_fplayer_addclip.apply(this, arguments);
  394.                     };
  395.                 }
  396.  
  397.                 if ("setPlaylist" in result) {
  398.                     var old_fplayer_setplaylist = result.setPlaylist;
  399.                     result.setPlaylist = function() {
  400.                         if (arguments.length > 0)
  401.                             check_sources(arguments[0], els);
  402.  
  403.                         return old_fplayer_setplaylist.apply(this, arguments);
  404.                     };
  405.                 }
  406.  
  407.                 if ("load" in result) {
  408.                     var old_fplayer_load = result.load;
  409.                     result.load = function() {
  410.                         if (arguments.length > 0)
  411.                             check_sources(arguments[0], els);
  412.  
  413.                         return old_fplayer_load.apply(this, arguments);
  414.                     }
  415.                 }
  416.  
  417.                 /*if ("on" in result) {
  418.                     result.on("load", function(e, api, video) {
  419.                         console.log(e);
  420.                         check_sources(video || api.video, els);
  421.                     });
  422.                 }*/
  423.  
  424.                 return result;
  425.             }, ["$f"]);
  426.  
  427.             add_script(get_script_str(function() {
  428.                 flowplayer(function(api, root) {
  429.                     api.on("load", function(e, api, video) {
  430.                         flowplayer().load(video || api.video);
  431.                     });
  432.                 });
  433.             }));
  434.         }
  435.  
  436.         if ("videojs" in window && !window.videojs.INJECTED) {
  437.             inject("videojs", function() {
  438.                 if (arguments.length > 0 && typeof arguments[0] === "string") {
  439.                     var my_el = document.getElementById(arguments[0]);
  440.                     if (!my_el)
  441.                         my_el = document.querySelector(arguments[0]);
  442.  
  443.                     if (my_el) {
  444.                         if (my_el.src) {
  445.                            i2d_show_url("videojs", my_el.src);
  446.                         }
  447.  
  448.                         for (var i = 0; i < my_el.children.length; i++) {
  449.                             if (my_el.children[i].tagName.toLowerCase() === "source") {
  450.                                 if (my_el.children[i].src) {
  451.                                     i2d_show_url("videojs", my_el.children[i].src, my_el.children[i].getAttribute("label"));
  452.                                 }
  453.                             }
  454.                         }
  455.                     }
  456.                 }
  457.  
  458.                 var result = oldvariable.apply(this, arguments);
  459.  
  460.                 var old_videojs_src = result.src;
  461.                 result.src = function() {
  462.                     if (arguments.length > 0 && typeof arguments[0] === "object") {
  463.                         if ("src" in arguments[0]) {
  464.                             i2d_show_url("videojs", arguments[0].src);
  465.                         }
  466.                     }
  467.  
  468.                     return old_videojs_src.apply(this, arguments);
  469.                 };
  470.  
  471.                 return result;
  472.             });
  473.  
  474.             add_script(i2d_show_url.toString() +
  475.                        get_script_str(function() {
  476.                             document.addEventListener("DOMContentLoaded", function() {
  477.                                 var els = document.getElementsByClassName("video-js");
  478.                                 for (var i = 0; i < els.length; i++) {
  479.                                     var my_el = els[i];
  480.                                     if (my_el.tagName.toLowerCase() === "video") {
  481.                                         if (!my_el.getAttribute('data-setup')) {
  482.                                             continue;
  483.                                         }
  484.                                         if (my_el.src) {
  485.                                            i2d_show_url("videojs", my_el.src);
  486.                                         }
  487.  
  488.                                         for (var i = 0; i < my_el.children.length; i++) {
  489.                                             if (my_el.children[i].tagName.toLowerCase() === "source") {
  490.                                                 if (my_el.children[i].src) {
  491.                                                     i2d_show_url("videojs", my_el.children[i].src, my_el.children[i].getAttribute("label"));
  492.                                                 }
  493.                                             }
  494.                                         }
  495.                                     }
  496.                                 }
  497.                             });
  498.                        }));
  499.         }
  500.  
  501.         if ("amp" in window && !window.amp.INJECTED) {
  502.             inject("amp", function() {
  503.                 function show_amp_source(sourceobj) {
  504.                     if ("protectionInfo" in sourceobj) {
  505.                         console.log("[amp] Cannot decode protection info");
  506.                     }
  507.                     if ("src" in sourceobj)
  508.                        i2d_show_url("amp", sourceobj.src);
  509.                 }
  510.  
  511.                 if (arguments.length >= 2 && typeof arguments[1] === "object") {
  512.                     if ("sourceList" in arguments[1]) {
  513.                         for (var i = 0; i < arguments[1].sourceList.length; i++) {
  514.                             show_amp_source(arguments[1].sourceList[i]);
  515.                         }
  516.                     }
  517.                 }
  518.  
  519.                 var result = oldvariable.apply(this, arguments);
  520.  
  521.                 if (!result)
  522.                     return result;
  523.  
  524.                 var old_amp_src = result.src;
  525.                 result.src = function() {
  526.                     for (var i = 0; i < arguments[0].length; i++) {
  527.                         show_amp_source(arguments[0][i]);
  528.                     }
  529.  
  530.                     return old_amp_src.apply(this, arguments);
  531.                 };
  532.  
  533.                 return result;
  534.             });
  535.         }
  536.  
  537.         if (window.location.host.search("forvo") >= 0 && "createAudioObject" in window && !window.createAudioObject.INJECTED) {
  538.             inject("createAudioObject", function(id, mp3, ogg) {
  539.                 i2d_show_url("forvo", mp3, "mp3");
  540.                 i2d_show_url("forvo", ogg, "ogg");
  541.  
  542.                 return oldvariable.apply(this, arguments);
  543.             });
  544.         }
  545.  
  546.         if ("jQuery" in window) {
  547.             inject_jquery_plugin("jPlayer", function() {
  548.                 if (arguments.length > 0 && arguments[0] === "setMedia") {
  549.                     if (arguments.length > 1) {
  550.                         if (typeof arguments[1] === "object") {
  551.                             for (var i in arguments[1]) {
  552.                                 if (i === "title" ||
  553.                                     i === "duration" ||
  554.                                     i === "track" /* for now */ ||
  555.                                     i === "artist" ||
  556.                                     i === "free")
  557.                                     continue;
  558.  
  559.                                 i2d_show_url("jPlayer", arguments[1][i], i);
  560.                             }
  561.                         } else if (typeof arguments[1] === "string") {
  562.                             i2d_show_url("jPlayer", arguments[1]);
  563.                         }
  564.                     }
  565.                 }
  566.  
  567.                 return oldvariable.apply(this, arguments);
  568.             });
  569.         }
  570.     }
  571.  
  572.     i2d_main();
  573.  
  574.     window.addEventListener("afterscriptexecute", function(e) {
  575.       i2d_main(e.target);
  576.     });
  577.  
  578.     document.addEventListener("DOMContentLoaded", function() {
  579.         var get_raws = function() {
  580.             var audios = [].slice.call(document.getElementsByTagName("audio"));
  581.             var videos = [].slice.call(document.getElementsByTagName("video"));
  582.             var els = Array.concat(audios, videos);
  583.  
  584.             for (var i = 0; i < els.length; i++) {
  585.                 var basename = "raw ";
  586.                 var el = els[i];
  587.  
  588.                 if (el.tagName.toLowerCase() === "video") {
  589.                     basename += "video";
  590.                 } else {
  591.                     basename += "audio";
  592.                 }
  593.  
  594.                 if (el.id)
  595.                     basename += ": #" + el.id;
  596.  
  597.                 var show_updates = function() {
  598.                     if (el.src)
  599.                         i2d_show_url(basename, el.src);
  600.  
  601.                     for (var x = 0; x < el.children.length; x++) {
  602.                         if (els[i].children[x].tagName.toLowerCase() !== "source") {
  603.                             continue;
  604.                         }
  605.  
  606.                         var type = null;
  607.                         if (el.children[x].type)
  608.                             type = el.children[x].type;
  609.  
  610.                         if (el.children[x].src)
  611.                             i2d_show_url(basename, el.children[x].src, type);
  612.                     }
  613.                 };
  614.  
  615.                 var observer = new MutationObserver(show_updates);
  616.                 observer.observe(el, { attributes: true, childList: true });
  617.  
  618.                 show_updates();
  619.             }
  620.         };
  621.         add_script(i2d_show_url.toString() + "\n" +
  622.                   "(" + get_raws.toString() + ")();");
  623.  
  624.         i2d_main();
  625.     });
  626. })();