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-rw-r--r--eval_test.js532
-rw-r--r--main_background.js186
-rw-r--r--manifest.json2
-rw-r--r--test.html0
-rw-r--r--testtag.html17
5 files changed, 73 insertions, 664 deletions
diff --git a/eval_test.js b/eval_test.js
deleted file mode 100644
index f59aed2..0000000
--- a/eval_test.js
+++ /dev/null
@@ -1,532 +0,0 @@
-
-/**
-* This file is the "skeleton" of the final system to determine
-* if a script is accepted or blocked.
-*
-* Some assets taken from script_detector.js
-*
-*/
-
-// the list of all available event attributes
-var intrinsic_events = [
- "onload",
- "onunload",
- "onclick",
- "ondblclick",
- "onmousedown",
- "onmouseup",
- "onmouseover",
- "onmousemove",
- "onmouseout",
- "onfocus",
- "onblur",
- "onkeypress",
- "onkeydown",
- "onkeyup",
- "onsubmit",
- "onreset",
- "onselect",
- "onchange"
-];
-/*
- NONTRIVIAL THINGS:
- - Fetch
- - XMLhttpRequest
- - eval()
- - ?
- JAVASCRIPT CAN BE FOUND IN:
- - Event handlers (onclick, onload, onsubmit, etc.)
- - <script>JS</script>
- - <script src="/JS.js"></script>
- WAYS TO DETERMINE PASS/FAIL:
- - "// @license [magnet link] [identifier]" then "// @license-end" (may also use /* comments)
- - Automatic whitelist: (http://bzr.savannah.gnu.org/lh/librejs/dev/annotate/head:/data/script_libraries/script-libraries.json_
- - <table id="jslicense-labels1"><table> which may be linked to by a link tag identified by rel="jslicense" or data-jslicense="1"
- - In the first script tag, declare the license with @licstart/@licend
-*/
-
-var licenses = {
- 'Apache-2.0':{
- 'URL': 'http://www.apache.org/licenses/LICENSE-2.0',
- 'Magnet link': 'magnet:?xt=urn:btih:8e4f440f4c65981c5bf93c76d35135ba5064d8b7&dn=apache-2.0.txt'
- },
- // No identifier was present in documentation
- 'Artistic-2.0':{
- 'URL': 'http://www.perlfoundation.org/artistic_license_2_0',
- 'Magnet link': 'magnet:?xt=urn:btih:54fd2283f9dbdf29466d2df1a98bf8f65cafe314&dn=artistic-2.0.txt'
- },
- // No identifier was present in documentation
- 'Boost':{
- 'URL': 'http://www.boost.org/LICENSE_1_0.txt',
- 'Magnet link': 'magnet:?xt=urn:btih:89a97c535628232f2f3888c2b7b8ffd4c078cec0&dn=Boost-1.0.txt'
- },
- // No identifier was present in documentation
- 'BSD-3-Clause':{
- 'URL': 'http://opensource.org/licenses/BSD-3-Clause',
- 'Magnet link': 'magnet:?xt=urn:btih:c80d50af7d3db9be66a4d0a86db0286e4fd33292&dn=bsd-3-clause.txt',
- },
- 'CPAL-1.0':{
- 'URL': 'http://opensource.org/licenses/cpal_1.0',
- 'Magnet link': 'magnet:?xt=urn:btih:84143bc45939fc8fa42921d619a95462c2031c5c&dn=cpal-1.0.txt'
- },
- 'CC0-1.0':{
- 'URL': 'http://creativecommons.org/publicdomain/zero/1.0/legalcode',
- 'Magnet link': 'magnet:?xt=urn:btih:90dc5c0be029de84e523b9b3922520e79e0e6f08&dn=cc0.txt'
- },
- 'EPL-1.0':{
- 'URL': 'http://www.eclipse.org/legal/epl-v10.html',
- 'Magnet link': 'magnet:?xt=urn:btih:4c6a2ad0018cd461e9b0fc44e1b340d2c1828b22&dn=epl-1.0.txt'
- },
- 'Expat':{
- 'URL': 'http://www.jclark.com/xml/copying.txt',
- 'Magnet link': 'magnet:?xt=urn:btih:d3d9a9a6595521f9666a5e94cc830dab83b65699&dn=expat.txt'
- },
- 'FreeBSD':{
- 'URL': 'http://www.freebsd.org/copyright/freebsd-license.html',
- 'Magnet link': 'magnet:?xt=urn:btih:87f119ba0b429ba17a44b4bffcab33165ebdacc0&dn=freebsd.txt'
- },
- 'GPL-2.0':{
- 'URL': 'http://www.gnu.org/licenses/gpl-2.0.html',
- 'Magnet link': 'magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3&dn=gpl-2.0.txt'
- },
- 'GPL-3.0':{
- 'URL': 'http://www.gnu.org/licenses/gpl-3.0.html',
- 'Magnet link': 'magnet:?xt=urn:btih:1f739d935676111cfff4b4693e3816e664797050&dn=gpl-3.0.txt'
- },
- 'LGPL-2.1':{
- 'URL': 'http://www.gnu.org/licenses/lgpl-2.1.html',
- 'Magnet link': 'magnet:?xt=urn:btih:5de60da917303dbfad4f93fb1b985ced5a89eac2&dn=lgpl-2.1.txt'
- },
- 'LGPL-3.0':{
- 'URL': 'http://www.gnu.org/licenses/lgpl-3.0.html',
- 'Magnet link': 'magnet:?xt=urn:btih:0ef1b8170b3b615170ff270def6427c317705f85&dn=lgpl-3.0.txt'
- },
- 'AGPL-3.0':{
- 'URL': 'http://www.gnu.org/licenses/agpl-3.0.html',
- 'Magnet link': 'magnet:?xt=urn:btih:0b31508aeb0634b347b8270c7bee4d411b5d4109&dn=agpl-3.0.txt'
- },
- 'ISC':{
- 'URL': 'https://www.isc.org/downloads/software-support-policy/isc-license/',
- 'Magnet link': 'magnet:?xt=urn:btih:b8999bbaf509c08d127678643c515b9ab0836bae&dn=ISC.txt'
- },
- 'MPL-2.0':{
- 'URL': 'http://www.mozilla.org/MPL/2.0',
- 'Magnet link': 'magnet:?xt=urn:btih:3877d6d54b3accd4bc32f8a48bf32ebc0901502a&dn=mpl-2.0.txt'
- },
- // "Public domain is not a license"
- // Replace with CC0?
- 'Public-Domain':{
- 'URL': 'https://www.gnu.org/licenses/license-list.html#PublicDomain',
- 'Magnet link': 'magnet:?xt=urn:btih:e95b018ef3580986a04669f1b5879592219e2a7a&dn=public-domain.txt'
- },
- 'UPL-1.0': {
- 'URL': 'https://oss.oracle.com/licenses/upl/',
- 'Magnet link': 'magnet:?xt=urn:btih:478974f4d41c3fa84c4befba25f283527fad107d&dn=upl-1.0.txt'
- },
- 'WTFPL': {
- 'URL': 'http://www.wtfpl.net/txt/copying/',
- 'Magnet link': 'magnet:?xt=urn:btih:723febf9f6185544f57f0660a41489c7d6b4931b&dn=wtfpl.txt'
- },
- 'Unlicense':{
- 'URL': 'http://unlicense.org/UNLICENSE',
- 'Magnet link': 'magnet:?xt=urn:btih:5ac446d35272cc2e4e85e4325b146d0b7ca8f50c&dn=unlicense.txt'
- },
- // No identifier was present in documentation
- 'X11':{
- 'URL': 'http://www.xfree86.org/3.3.6/COPYRIGHT2.html#3',
- 'Magnet link': 'magnet:?xt=urn:btih:5305d91886084f776adcf57509a648432709a7c7&dn=x11.txt'
- },
- // Picked one of the two links that were there
- 'Modified-BSD':{
- 'URL': 'http://www.xfree86.org/current/LICENSE4.html',
- 'Magnet link': 'magnet:?xt=urn:btih:12f2ec9e8de2a3b0002a33d518d6010cc8ab2ae9&dn=xfree86.txt'
- }
-}
-
-// Objects which could be used to do nontrivial things
-// Bracket suffix notation could still be exploited to get some of these objects
-var reserved_objects = [
- "fetch",
- "XMLHttpRequest",
- "chrome", // only on chrome
- "browser", // only on firefox
- "eval"
-];
-
-function get_final_page(html_string, callback){
-
- /**
- * Determines if a block of javascript is trivial or not.
- *
- * true = trivial, false = nontrivial
- *
- */
- function evaluate(script,name){
- function reserved_object_regex(object){
- // Matches use of object as a variable
-
- // This accounts for both unary, binary and assignment operators
- var arith_operators = "\\+\\-\\*\\/\\%\\=";
-
- // These are allowed to preceed or trail a variable as in 'if(true){eval("thiscode")};'
- // However, if you have 'function(){eval}' where the "}" char trails "eval", this can't
- // be used to invoke member objects or pass arguments.
- var scope_chars = "\{\}\]\[\(\)\,";
-
- // No property accessors are allowed to follow the string stored in "object"
- // Whitespace is allowed to come between these property accessors
- var trailing_chars = "\s*"+"\(\.\[";
-
- return new RegExp("(?:[^\\w\\d]|^|(?:"+arith_operators+"))"+object+'(?:\\s*?(?:[\\;\\,\\.\\(\\[])\\s*?)',"g");
- }
- reserved_object_regex("window");
- // Strings
- var all_strings = new RegExp('".*?"'+"|'.*?'","gm");
- // multi-line "/*" "*/" comments
- var ml_comment = /\/\*([\s\S]+?)\*\//g;
- // in-line "//" comments
- var il_comment = /\/\/.+/gm;
- // The contents of bracket pairs
- var bracket_pairs = /\[.+?\]/g;
-
- // Replace string consts with values that won't interfere
- var temp = script.replace(/'.+?'+/gm,"'string'");
- temp = temp.replace(/".+?"+/gm,'"string"');
- // Remove comments
- temp = temp.replace(ml_comment,"");
- temp = temp.replace(il_comment,"");
- // Now that there can't be any brackets inside of comments or strings,
- //
-
- console.log("------evaluation results for "+ name +"------");
- console.log("Script accesses reserved objects?");
- var flag = true;
- for(var i = 0; i < reserved_objects.length; i++){
- var res = reserved_object_regex(reserved_objects[i]).exec(script);
- if(res != null){
- console.log("%c fail","color:red;");
- console.log(res["input"].substr(res["index"]-15,res["index"]+15));
- flag = false;
- }
- }
- if(flag){
- console.log("%c pass","color:green;");
- }
-
- return flag;
- }
-
- /**
- * Looks at the output of the @license regex and determines if the
- * license is good.
- */
- function license_valid(matches){
- // Being overly careful with safety checks
- if(matches.length != 4){
- return false;
- }
- if(matches[1] != "@license"){
- return false;
- }
- if(licenses[matches[3]] === undefined){
- return false;
- }
- if(licenses[matches[3]]["Magnet link"] != matches[2]){
- return false;
- }
- return true;
- }
- /**
- *
- * Runs regexes to search for explicit delcarations of script
- * licenses on the argument.
- * It detects:
- * //@license, //@license-end
- * //licstart, //licend
- *
- * We are assuming that the "stack depth" of @license tags can not exceed 1.
- * If this isn't correct, we can make it recursive.
- *
- */
- // TODO: Known bug: extra \n chars thrown in at some splices
- function license_read(script_src,name){
- if(typeof(script_src) != "string"){
- return "fail"
- }
- // Contains only good Javascript
- var edited_src = "";
- // Once Javascript has been "judged", remove it from here
- var unedited_src = script_src;
- var first = true;
- while(true){
- if(first){
- first = false;
- //console.log("input:");
- //console.log("%c"+unedited_src,"color:#550000");
- }
- var matches = /^(@license)\s([\S]+)\s([\S]+$)/gm.exec(unedited_src);
- if(matches == null){
- //console.log("No more matches, almost done");
- if(evaluate(unedited_src,name)){
- edited_src += unedited_src;
- }
- return edited_src;
- }
- // operate on everything before the next match.
- //console.log("Everything before the next match");
- var before = unedited_src.substr(0,matches["index"]);
- //console.log(before);
- if(evaluate(before,name)){
- edited_src += before;
- }
- // This should remove the substring "before"
- unedited_src = unedited_src.substr(matches["index"],unedited_src.length);
- // find the end tag and check if it is valid
- matches_end = /^(@license-end)/gm.exec(unedited_src);
- if(matches_end == null){
- console.log("ERROR: @license with no @license-end");
- return [false,"ERROR: @license with no @license-end"];
- }
- var endtag_end_index = matches_end["index"]+matches_end[0].length;
- // accept next tag if its license is good.
- if(license_valid(matches)){
- edited_src = edited_src + unedited_src.substr(0,endtag_end_index);
- }
- // Remove the next tag (it will be in edited_src if it was accepted)
- unedited_src = unedited_src.substr(endtag_end_index,unedited_src.length);
- //console.log("New input after iteration:");
- //console.log("%c"+unedited_src,"color:red;");
- //console.log("Current output:");
- //console.log("%c"+edited_src,"color:green;");
- }
- }
- /**
- *
- * Checks the whitelist in storage
- * (Not the comma seperated whitelist from settings)
- *
- */
- function is_whitelisted(){
- // TODO: implement when this is a background script
- return false;
- }
-
-
- /**
- * Parses the weblabels table from a DOM object
- *
- */
- function read_weblabels_table(weblabel){
- var data = {};
- var tbody = weblabel.getElementsByTagName("td");
- for(var i = 0; i < tbody.length; i++){
- var link = tbody[i].getElementsByTagName("a")[0];
- //console.log(link.href);
- if(link.innerText in licenses){
- console.log("%cFree: " + link.innerText,"color:green;");
- data[encodeURI(link.innerText)] = "free";
- } else{
- console.log("%cUnknown: " + link.innerText,"color:red;");
- data[encodeURI(link.innerText)] = "unknown";
- }
- }
- console.log("web labels table data:");
- console.log(data);
- return data;
- }
-
- /**
- * Reads the weblabels table from a link.
- *
- */
- function get_table(html_doc, callback, url){
- var xml = new XMLHttpRequest();
- xml.open("get",url);
- xml.onload = function(){
- var a = new DOMParser()
- var doc = a.parseFromString(this.responseText,"text/html");
- var web_label = doc.getElementById("jslicense-labels1");
- if(web_label != null){
- read_w_table(html_doc, callback, table_data=read_weblabels_table(web_label));
- }
- }
- xml.send();
- }
- /**
- * Basically an extension of "analyze"
- *
- * Calls license_read() on all the document's scripts. license_read() then returns an edited version
- * according to license status and trivial/nontrivial status.
- *
- * Added because I was having async issues
- */
- function read_w_table(html_doc, callback, table_data=false){
-
- var has_intrinsic_events = [];
- for(var i = 0; i < html_doc.all.length; i++){
- for(var j = 0; j < intrinsicEvents.length; j++){
- if(intrinsicEvents[j] in html_doc.all[i].attributes){
- has_intrinsic_events.push([i,j]);
- }
- }
- }
-
- var done = false;
- var amt_done = 0;
- var amt_remote_scripts = 0;
- var amt_todo = html_doc.scripts.length + has_intrinsic_events.length;
-
- function check_done(){
- console.log(amt_done + "/" + (amt_todo - amt_remote_scripts) );
- if(amt_done > amt_todo){
- console.warn("Not supposed to happen");
- }
- if(done == false && amt_done >= (amt_todo - amt_remote_scripts) ){
- console.log("%c DONE.","color:red;");
- callback(html_doc);
- done = true;
- // TODO: Convert this to async
- // TODO: Call update_popup() here with reasons
- }
- }
- // "i" is an index in html_doc.scripts
- function edit_src(src, i, name){
- var edited = license_read(src,name);
- if(edited == "string"){
- html_doc.scripts[i].outerHTML = "<script name='librejs-accepted'>"+edited+"</script>";
- } else{
- html_doc.scripts[i].outerHTML = "<script name='librejs-denied'>"+name+"</script>";
- }
- amt_done++;
- }
- // "i" is an index in html_doc.all
- // "j" is an index in intrinsicEvents
- function edit_event(src,i,j,name){
- var edited = license_read(src,name);
-
- if(edited == "string"){
- html_doc.all[i].attributes[intrinsicEvents[j]].value = edited;
- } else{
- html_doc.all[i].attributes[intrinsicEvents[j]].value = "//Denied by LibreJS";
- }
- amt_done++;
- }
-
- for(var i = 0; i < html_doc.scripts.length; i++){
- // convert between relative link and file name (table_data indexes by file name)
- var tok_index = html_doc.scripts[i].src.split("/").length;
- var scriptname = html_doc.scripts[i].src.split("/")[tok_index-1];
-
- if(table_data != false && scriptname in table_data){
- console.log("script contained in weblabel data.");
- if(table_data[scriptname] == "free"){
- console.log("script is free");
- continue;
- }
-
- console.log("script is unknown");
- }
-
- if(html_doc.scripts[i].src != ""){
- // this is a remote script ("<script src='script.js'></script>")
- var name = html_doc.scripts[i].src;
- console.log("%c Will evaluate script '" + name + "' when it arrives. Document.scripts index: "+i,"color:blue;");
- amt_remote_scripts++;
-
- } else{
- // it is an inline script ("<script>console.log('test');</script>")
- console.log("%c Evaluating inline script. Document.scripts index: "+i,"color:blue;");
- //console.log(html_doc.scripts[i].innerText);
- edit_src(html_doc.scripts[i].innerText, i, "src: inline (index "+i+")");
- }
- }
- // Find all the document's elements with intrinsic events
- for(var i = 0; i < has_intrinsic_events.length; i++){
- var s_name = "html_doc.all["+has_intrinsic_events[i][0]+"]";
- edit_event(html_doc.all[has_intrinsic_events[i][0]].attributes[intrinsicEvents[has_intrinsic_events[i][1]]].value,has_intrinsic_events[i][0],has_intrinsic_events[i][1],s_name);
- }
-
- check_done();
-
- }
- /*
- * Basically just calls license_read() on all the Javascript in html_source
- */
- function analyze(html_source,callback){
- // TODO: Call get_whitelisted_status on this page's URL
-
- var parser = new DOMParser();
- var html_doc = parser.parseFromString(html_source, "text/html");
-
- // Test "the first piece of Javascript available to the page" for the license comment
- var finished = false;
- if(html_doc.scripts[0] !== undefined){
- if(html_doc.scripts[0].src != ""){
- // this function is here because otherwise there would be async issues
- function get_first_js(){
- var name = html_doc.scripts[0].src;
- var xml = new XMLHttpRequest();
- xml.open("get", html_doc.scripts[0].src);
- xml.onload = function(response){
- var matches = this.responseText.match(/@licstart[\s\S]+@licend/g);
- if(matches != null){
- console.log("License comment found:");
- console.log(matches[0]);
- console.log("Trusting that the entire page is freely licensed.");
- callback(true);
- }
- }
- xml.send();
- }
- get_first_js();
- } else{
- console.log("%c Script " + i + ": (src: inline)","color:red;");
- var matches = html_doc.scripts[0].innerText.match(/@licstart[\s\S]+@licend/g);
- if(matches != null){
- console.log("License comment found:");
- console.log(matches[0]);
- console.log("Trusting that the entire page is freely licensed.");
- callback(true);
- }
- }
- }
-
- var table_data = {};
- var found_table_flag = false;
- // Test for the link that has rel="jslicense", data-jslicense="1"
- for(var i = 0; i < html_doc.links.length; i++){
- // TODO: also check if data-jslicense == "1". (how?)
- if(html_doc.links[i].rel == "jslicense"){
- console.log("Found HTML table link:");
- get_table(html_doc, callback, html_doc.links[i].href);
- found_table_flag = true;
- break;
- }
- }
- // Test for the JavaScript Web Labels table on this page
- var weblabel = html_doc.getElementById("jslicense-labels1");
- if(weblabel !== undefined && weblabel != null && found_table_flag == false){
- console.log("Found web labels table");
- read_w_table(html_doc, callback, table_data=read_weblabels_table(weblabel));
- }
- if(found_table_flag == false){
- read_w_table(html_doc, callback);
- }
- }
-
- analyze(html_string,callback);
-
-}
-
-get_final_page(document.documentElement.outerHTML,function(a){
- console.log("returned");
- if(typeof(a) == "boolean"){
- return;
- }
- document.documentElement.innerHTML = a.documentElement.innerHTML;
-});
-
-
-
-
-
diff --git a/main_background.js b/main_background.js
index c4a2b7c..b91eeca 100644
--- a/main_background.js
+++ b/main_background.js
@@ -1,43 +1,15 @@
+var acorn = require('acorn');
+var jssha = require('jssha');
-
-/*
- A JavaScript implementation of the SHA family of hashes, as
- defined in FIPS PUB 180-4 and FIPS PUB 202, as well as the corresponding
- HMAC implementation as defined in FIPS PUB 198a
- Copyright Brian Turek 2008-2017
- Distributed under the BSD License
- See http://caligatio.github.com/jsSHA/ for more information
- Several functions taken from Paul Johnston
-*/
-
-'use strict';(function(I){function w(c,a,d){var l=0,b=[],g=0,f,n,k,e,h,q,y,p,m=!1,t=[],r=[],u,z=!1;d=d||{};f=d.encoding||"UTF8";u=d.numRounds||1;if(u!==parseInt(u,10)||1>u)throw Error("numRounds must a integer >= 1");if(0===c.lastIndexOf("SHA-",0))if(q=function(b,a){return A(b,a,c)},y=function(b,a,l,f){var g,e;if("SHA-224"===c||"SHA-256"===c)g=(a+65>>>9<<4)+15,e=16;else throw Error("Unexpected error in SHA-2 implementation");for(;b.length<=g;)b.push(0);b[a>>>5]|=128<<24-a%32;a=a+l;b[g]=a&4294967295;
-b[g-1]=a/4294967296|0;l=b.length;for(a=0;a<l;a+=e)f=A(b.slice(a,a+e),f,c);if("SHA-224"===c)b=[f[0],f[1],f[2],f[3],f[4],f[5],f[6]];else if("SHA-256"===c)b=f;else throw Error("Unexpected error in SHA-2 implementation");return b},p=function(b){return b.slice()},"SHA-224"===c)h=512,e=224;else if("SHA-256"===c)h=512,e=256;else throw Error("Chosen SHA variant is not supported");else throw Error("Chosen SHA variant is not supported");k=B(a,f);n=x(c);this.setHMACKey=function(b,a,g){var e;if(!0===m)throw Error("HMAC key already set");
-if(!0===z)throw Error("Cannot set HMAC key after calling update");f=(g||{}).encoding||"UTF8";a=B(a,f)(b);b=a.binLen;a=a.value;e=h>>>3;g=e/4-1;if(e<b/8){for(a=y(a,b,0,x(c));a.length<=g;)a.push(0);a[g]&=4294967040}else if(e>b/8){for(;a.length<=g;)a.push(0);a[g]&=4294967040}for(b=0;b<=g;b+=1)t[b]=a[b]^909522486,r[b]=a[b]^1549556828;n=q(t,n);l=h;m=!0};this.update=function(a){var c,f,e,d=0,p=h>>>5;c=k(a,b,g);a=c.binLen;f=c.value;c=a>>>5;for(e=0;e<c;e+=p)d+h<=a&&(n=q(f.slice(e,e+p),n),d+=h);l+=d;b=f.slice(d>>>
-5);g=a%h;z=!0};this.getHash=function(a,f){var d,h,k,q;if(!0===m)throw Error("Cannot call getHash after setting HMAC key");k=C(f);switch(a){case "HEX":d=function(a){return D(a,e,k)};break;case "B64":d=function(a){return E(a,e,k)};break;case "BYTES":d=function(a){return F(a,e)};break;case "ARRAYBUFFER":try{h=new ArrayBuffer(0)}catch(v){throw Error("ARRAYBUFFER not supported by this environment");}d=function(a){return G(a,e)};break;default:throw Error("format must be HEX, B64, BYTES, or ARRAYBUFFER");
-}q=y(b.slice(),g,l,p(n));for(h=1;h<u;h+=1)q=y(q,e,0,x(c));return d(q)};this.getHMAC=function(a,f){var d,k,t,u;if(!1===m)throw Error("Cannot call getHMAC without first setting HMAC key");t=C(f);switch(a){case "HEX":d=function(a){return D(a,e,t)};break;case "B64":d=function(a){return E(a,e,t)};break;case "BYTES":d=function(a){return F(a,e)};break;case "ARRAYBUFFER":try{d=new ArrayBuffer(0)}catch(v){throw Error("ARRAYBUFFER not supported by this environment");}d=function(a){return G(a,e)};break;default:throw Error("outputFormat must be HEX, B64, BYTES, or ARRAYBUFFER");
-}k=y(b.slice(),g,l,p(n));u=q(r,x(c));u=y(k,e,h,u);return d(u)}}function m(){}function D(c,a,d){var l="";a/=8;var b,g;for(b=0;b<a;b+=1)g=c[b>>>2]>>>8*(3+b%4*-1),l+="0123456789abcdef".charAt(g>>>4&15)+"0123456789abcdef".charAt(g&15);return d.outputUpper?l.toUpperCase():l}function E(c,a,d){var l="",b=a/8,g,f,n;for(g=0;g<b;g+=3)for(f=g+1<b?c[g+1>>>2]:0,n=g+2<b?c[g+2>>>2]:0,n=(c[g>>>2]>>>8*(3+g%4*-1)&255)<<16|(f>>>8*(3+(g+1)%4*-1)&255)<<8|n>>>8*(3+(g+2)%4*-1)&255,f=0;4>f;f+=1)8*g+6*f<=a?l+="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/".charAt(n>>>
-6*(3-f)&63):l+=d.b64Pad;return l}function F(c,a){var d="",l=a/8,b,g;for(b=0;b<l;b+=1)g=c[b>>>2]>>>8*(3+b%4*-1)&255,d+=String.fromCharCode(g);return d}function G(c,a){var d=a/8,l,b=new ArrayBuffer(d),g;g=new Uint8Array(b);for(l=0;l<d;l+=1)g[l]=c[l>>>2]>>>8*(3+l%4*-1)&255;return b}function C(c){var a={outputUpper:!1,b64Pad:"=",shakeLen:-1};c=c||{};a.outputUpper=c.outputUpper||!1;!0===c.hasOwnProperty("b64Pad")&&(a.b64Pad=c.b64Pad);if("boolean"!==typeof a.outputUpper)throw Error("Invalid outputUpper formatting option");
-if("string"!==typeof a.b64Pad)throw Error("Invalid b64Pad formatting option");return a}function B(c,a){var d;switch(a){case "UTF8":case "UTF16BE":case "UTF16LE":break;default:throw Error("encoding must be UTF8, UTF16BE, or UTF16LE");}switch(c){case "HEX":d=function(a,b,c){var f=a.length,d,k,e,h,q;if(0!==f%2)throw Error("String of HEX type must be in byte increments");b=b||[0];c=c||0;q=c>>>3;for(d=0;d<f;d+=2){k=parseInt(a.substr(d,2),16);if(isNaN(k))throw Error("String of HEX type contains invalid characters");
-h=(d>>>1)+q;for(e=h>>>2;b.length<=e;)b.push(0);b[e]|=k<<8*(3+h%4*-1)}return{value:b,binLen:4*f+c}};break;case "TEXT":d=function(c,b,d){var f,n,k=0,e,h,q,m,p,r;b=b||[0];d=d||0;q=d>>>3;if("UTF8"===a)for(r=3,e=0;e<c.length;e+=1)for(f=c.charCodeAt(e),n=[],128>f?n.push(f):2048>f?(n.push(192|f>>>6),n.push(128|f&63)):55296>f||57344<=f?n.push(224|f>>>12,128|f>>>6&63,128|f&63):(e+=1,f=65536+((f&1023)<<10|c.charCodeAt(e)&1023),n.push(240|f>>>18,128|f>>>12&63,128|f>>>6&63,128|f&63)),h=0;h<n.length;h+=1){p=k+
-q;for(m=p>>>2;b.length<=m;)b.push(0);b[m]|=n[h]<<8*(r+p%4*-1);k+=1}else if("UTF16BE"===a||"UTF16LE"===a)for(r=2,n="UTF16LE"===a&&!0||"UTF16LE"!==a&&!1,e=0;e<c.length;e+=1){f=c.charCodeAt(e);!0===n&&(h=f&255,f=h<<8|f>>>8);p=k+q;for(m=p>>>2;b.length<=m;)b.push(0);b[m]|=f<<8*(r+p%4*-1);k+=2}return{value:b,binLen:8*k+d}};break;case "B64":d=function(a,b,c){var f=0,d,k,e,h,q,m,p;if(-1===a.search(/^[a-zA-Z0-9=+\/]+$/))throw Error("Invalid character in base-64 string");k=a.indexOf("=");a=a.replace(/\=/g,
-"");if(-1!==k&&k<a.length)throw Error("Invalid '=' found in base-64 string");b=b||[0];c=c||0;m=c>>>3;for(k=0;k<a.length;k+=4){q=a.substr(k,4);for(e=h=0;e<q.length;e+=1)d="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/".indexOf(q[e]),h|=d<<18-6*e;for(e=0;e<q.length-1;e+=1){p=f+m;for(d=p>>>2;b.length<=d;)b.push(0);b[d]|=(h>>>16-8*e&255)<<8*(3+p%4*-1);f+=1}}return{value:b,binLen:8*f+c}};break;case "BYTES":d=function(a,b,c){var d,n,k,e,h;b=b||[0];c=c||0;k=c>>>3;for(n=0;n<a.length;n+=
-1)d=a.charCodeAt(n),h=n+k,e=h>>>2,b.length<=e&&b.push(0),b[e]|=d<<8*(3+h%4*-1);return{value:b,binLen:8*a.length+c}};break;case "ARRAYBUFFER":try{d=new ArrayBuffer(0)}catch(l){throw Error("ARRAYBUFFER not supported by this environment");}d=function(a,b,c){var d,n,k,e,h;b=b||[0];c=c||0;n=c>>>3;h=new Uint8Array(a);for(d=0;d<a.byteLength;d+=1)e=d+n,k=e>>>2,b.length<=k&&b.push(0),b[k]|=h[d]<<8*(3+e%4*-1);return{value:b,binLen:8*a.byteLength+c}};break;default:throw Error("format must be HEX, TEXT, B64, BYTES, or ARRAYBUFFER");
-}return d}function r(c,a){return c>>>a|c<<32-a}function J(c,a,d){return c&a^~c&d}function K(c,a,d){return c&a^c&d^a&d}function L(c){return r(c,2)^r(c,13)^r(c,22)}function M(c){return r(c,6)^r(c,11)^r(c,25)}function N(c){return r(c,7)^r(c,18)^c>>>3}function O(c){return r(c,17)^r(c,19)^c>>>10}function P(c,a){var d=(c&65535)+(a&65535);return((c>>>16)+(a>>>16)+(d>>>16)&65535)<<16|d&65535}function Q(c,a,d,l){var b=(c&65535)+(a&65535)+(d&65535)+(l&65535);return((c>>>16)+(a>>>16)+(d>>>16)+(l>>>16)+(b>>>
-16)&65535)<<16|b&65535}function R(c,a,d,l,b){var g=(c&65535)+(a&65535)+(d&65535)+(l&65535)+(b&65535);return((c>>>16)+(a>>>16)+(d>>>16)+(l>>>16)+(b>>>16)+(g>>>16)&65535)<<16|g&65535}function x(c){var a=[],d;if(0===c.lastIndexOf("SHA-",0))switch(a=[3238371032,914150663,812702999,4144912697,4290775857,1750603025,1694076839,3204075428],d=[1779033703,3144134277,1013904242,2773480762,1359893119,2600822924,528734635,1541459225],c){case "SHA-224":break;case "SHA-256":a=d;break;case "SHA-384":a=[new m,new m,
-new m,new m,new m,new m,new m,new m];break;case "SHA-512":a=[new m,new m,new m,new m,new m,new m,new m,new m];break;default:throw Error("Unknown SHA variant");}else throw Error("No SHA variants supported");return a}function A(c,a,d){var l,b,g,f,n,k,e,h,m,r,p,w,t,x,u,z,A,B,C,D,E,F,v=[],G;if("SHA-224"===d||"SHA-256"===d)r=64,w=1,F=Number,t=P,x=Q,u=R,z=N,A=O,B=L,C=M,E=K,D=J,G=H;else throw Error("Unexpected error in SHA-2 implementation");d=a[0];l=a[1];b=a[2];g=a[3];f=a[4];n=a[5];k=a[6];e=a[7];for(p=
-0;p<r;p+=1)16>p?(m=p*w,h=c.length<=m?0:c[m],m=c.length<=m+1?0:c[m+1],v[p]=new F(h,m)):v[p]=x(A(v[p-2]),v[p-7],z(v[p-15]),v[p-16]),h=u(e,C(f),D(f,n,k),G[p],v[p]),m=t(B(d),E(d,l,b)),e=k,k=n,n=f,f=t(g,h),g=b,b=l,l=d,d=t(h,m);a[0]=t(d,a[0]);a[1]=t(l,a[1]);a[2]=t(b,a[2]);a[3]=t(g,a[3]);a[4]=t(f,a[4]);a[5]=t(n,a[5]);a[6]=t(k,a[6]);a[7]=t(e,a[7]);return a}var H;H=[1116352408,1899447441,3049323471,3921009573,961987163,1508970993,2453635748,2870763221,3624381080,310598401,607225278,1426881987,1925078388,2162078206,
-2614888103,3248222580,3835390401,4022224774,264347078,604807628,770255983,1249150122,1555081692,1996064986,2554220882,2821834349,2952996808,3210313671,3336571891,3584528711,113926993,338241895,666307205,773529912,1294757372,1396182291,1695183700,1986661051,2177026350,2456956037,2730485921,2820302411,3259730800,3345764771,3516065817,3600352804,4094571909,275423344,430227734,506948616,659060556,883997877,958139571,1322822218,1537002063,1747873779,1955562222,2024104815,2227730452,2361852424,2428436474,
-2756734187,3204031479,3329325298];"function"===typeof define&&define.amd?define(function(){return w}):"undefined"!==typeof exports?("undefined"!==typeof module&&module.exports&&(module.exports=w),exports=w):I.jsSHA=w})(this);
-
-console.debug("main_background.js");
+console.log("main_background.js");
/**
* Wrapper around crypto lib
*
*/
function hash(source){
- var shaObj = new jsSHA("SHA-256", "TEXT");
+ var shaObj = new jssha("SHA-256","TEXT")
shaObj.update(source);
return shaObj.getHash("HEX");
}
@@ -747,8 +719,22 @@ function blocked_status(hash){
});
}
/* *********************************************************************************************** */
-// (This is part of eval_test.js with a few console.logs/comments removed)
-
+/**
+* Rigorously determines if code is trivial or not based on the official triviality criterion
+*/
+function full_evaluate(script){
+ try{
+ var ast = window.parse(script);
+ }catch(e){
+ console.log("%cError parsing","color:red;");
+ return false;
+ }
+ console.log(ast);
+ return true;
+}
+/**
+* Performs the initial pass on code to see if it needs to be completely parsed
+*/
function evaluate(script,name){
function reserved_object_regex(object){
var arith_operators = "\\+\\-\\*\\/\\%\\=";
@@ -771,7 +757,7 @@ function evaluate(script,name){
var reason = ""
// This is where individual "passes" are made over the code
for(var i = 0; i < reserved_objects.length; i++){
- var res = reserved_object_regex(reserved_objects[i]).exec(script);
+ var res = reserved_object_regex(reserved_objects[i]).exec(temp);
if(res != null){
console.log("%c fail","color:red;");
flag = false;
@@ -780,7 +766,13 @@ function evaluate(script,name){
}
if(flag){
console.log("%c pass","color:green;");
+ } else{
+ return [flag,reason+"<br>"];
}
+
+ flag = full_evaluate(temp);
+
+
// If flag is set true at this point, the script is trivial
if(flag){
reason = "Script was determined to be trivial.";
@@ -845,7 +837,6 @@ function license_read(script_src,name){
return [true,edited_src,reason_text];
}
-onsole.log("Found a license tag");
var before = unedited_src.substr(0,matches["index"]);
nontrivial_status = evaluate(before,name);
if(nontrivial_status[0] == true){
@@ -1003,71 +994,19 @@ function read_script(a){
}
/**
-* Changes the DOM
-*
-*/
-function DOM_replace(element,newtext){
-
-
-}
-/**
-* Changes the source
-*
-*/
-function source_replace(html,replace_this,with_this){
- // This is absolutely neccessary. Not sure if it can cause bugs.
- html = html.replace(/\r\n|\r|\n/g,"\n");
- replace_this = replace_this.replace(/\r\n|\r|\n/g,"\n");
-
- // Get all match indices
- var match_indices = [];
-
- var lower_index = 0;
-
- while(true){
- var match_index = html.indexOf(replace_this,lower_index);
- if(match_index == -1){
- break;
- } else{
- match_indices.push(lower_index + match_index);
- lower_index += match_index + 1;
- }
- }
-
- if(match_indices.length == 0){
- console.log("%c No matches","color:red;");
- // TODO: handle this
- }
-
- if(match_indices.length == 1){
- console.log("%c Matched","color:green;");
- html = html.replace(replace_this,with_this);
- }
-
- if(match_indices.length > 1){
- console.log("%c Multiple matches","color:orange;");
- // TODO: handle this
- }
-
- return html;
-
-}
-//source_replace("ababababasdasdasbabababaabababdab","ab","xx");
-
-/**
* Removes noscript tags with name "librejs-path" leaving the inner content to load.
*/
-function remove_noscripts(html,doc){
- for(var i = 0; i < doc.getElementsByName("librejs-path").length; i++){
- if(doc.getElementsByName("librejs-path")[i].tagName == "NOSCRIPT"){
+function remove_noscripts(html_doc){
+ for(var i = 0; i < html_doc.getElementsByName("librejs-path").length; i++){
+ if(html_doc.getElementsByName("librejs-path")[i].tagName == "NOSCRIPT"){
debugger;
}
}
- return doc.documentElement.innerHTML;
+ return html_doc.documentElement.innerHTML;
}
/**
-* Changes the HTML of a page and the scripts within it.
+* Reads/changes the HTML of a page and the scripts within it.
*
*/
function edit_html(html,url,tabid,wl){
@@ -1084,6 +1023,34 @@ function edit_html(html,url,tabid,wl){
var amt_scripts = 0;
var total_scripts = 0;
var scripts = html_doc.scripts;
+
+ // Deal with intrinsic events
+
+ var has_intrinsic_events = [];
+ for(var i = 0; i < html_doc.all.length; i++){
+ for(var j = 0; j < intrinsic_events.length; j++){
+ if(intrinsic_events[j] in html_doc.all[i].attributes){
+ has_intrinsic_events.push([i,j]);
+ }
+ }
+ }
+
+ // "i" is an index in html_doc.all
+ // "j" is an index in intrinsicEvents
+ function edit_event(src,i,j,name){
+ var edited = get_script(src,name);
+ edited.then(function(){
+ html_doc.all[i].attributes[intrinsicEvents[j]].value = edited[0];
+ });
+ }
+
+ // Find all the document's elements with intrinsic events
+ for(var i = 0; i < has_intrinsic_events.length; i++){
+ var s_name = "Intrinsic event ["+has_intrinsic_events[i][0]+"]";
+ edit_event(html_doc.all[has_intrinsic_events[i][0]].attributes[intrinsicEvents[has_intrinsic_events[i][1]]].value,has_intrinsic_events[i][0],has_intrinsic_events[i][1],s_name);
+ }
+
+ // Deal with inline scripts
for(var i = 0; i < scripts.length; i++){
if(scripts[i].src == ""){
@@ -1093,32 +1060,19 @@ function edit_html(html,url,tabid,wl){
console.log("Analyzing "+total_scripts+" inline scripts...");
- var temphtml = html;
-
for(var i = 0; i < scripts.length; i++){
if(scripts[i].src == ""){
var edit_script = get_script(scripts[i].innerHTML,url,tabid,wl,i);
edit_script.then(function(edited){
- console.log("%c ------ not remote (document.scripts["+edited[1]+"]) ------","color:white");
-
var edited_source = edited[0];
var unedited_source = html_doc.scripts[edited[1]].innerHTML.trim();
- /* Source based */
- //temphtml = source_replace(temphtml,unedited_source,edited_source);
- /* DOM based */
html_doc.scripts[edited[1]].innerHTML = edited_source;
amt_scripts++;
if(amt_scripts >= total_scripts){
- //console.log(html);
- //console.log(temphtml);
-
- /* Source based */
- //resolve(remove_noscripts(temphtml,html_doc));
- /* DOM based */
- resolve(remove_noscripts(temphtml,html_doc));
+ resolve(remove_noscripts(html_doc));
}
});
@@ -1127,7 +1081,7 @@ function edit_html(html,url,tabid,wl){
if(total_scripts == 0){
console.log("Nothing to analyze.");
- resolve(remove_noscripts(temphtml,html_doc));
+ resolve(remove_noscripts(html_doc));
}
});
@@ -1142,13 +1096,16 @@ function read_document(a){
delete unused_data[a["tabId"]];
console.log("Page Changed!!!");
}
-
+ var str = "";
var filter = webex.webRequest.filterResponseData(a.requestId);
var decoder = new TextDecoder("utf-8");
var encoder = new TextEncoder(); // TODO: make sure this doesn't cause undeclared decoding
+ filter.onerror = event => {
+ console.log("%c Error in getting document","color:red");
+ }
+ filter.onstop = event => {
+ var test = new ArrayBuffer();
- filter.ondata = event => {
- var str = decoder.decode(event.data, {stream: true});
var res = test_url_whitelisted(a.url);
res.then(function(whitelisted){
var edit_page;
@@ -1167,6 +1124,10 @@ function read_document(a){
}
});
}
+ filter.ondata = event => {
+ str += decoder.decode(event.data, {stream: true});
+ return;
+ }
return {};
}
@@ -1182,8 +1143,6 @@ function init_addon(){
webex.storage.onChanged.addListener(options_listener);
webex.tabs.onRemoved.addListener(delete_removed_tab_info);
- var targetPage = "https://developer.mozilla.org/en-US/Firefox/Developer_Edition";
-
// Analyzes remote scripts
webex.webRequest.onBeforeRequest.addListener(
read_script,
@@ -1291,4 +1250,3 @@ function remove_csv_whitelist(domain){
}
init_addon();
-
diff --git a/manifest.json b/manifest.json
index ab1c245..9e46fab 100644
--- a/manifest.json
+++ b/manifest.json
@@ -39,7 +39,7 @@
"html/report_page/report.html"
],
"background": {
- "scripts": ["main_background.js"]
+ "scripts": ["bundle.js"]
}
}
diff --git a/test.html b/test.html
deleted file mode 100644
index e69de29..0000000
--- a/test.html
+++ /dev/null
diff --git a/testtag.html b/testtag.html
deleted file mode 100644
index 01e98ba..0000000
--- a/testtag.html
+++ /dev/null
@@ -1,17 +0,0 @@
-<!doctype html>
-<html>
- <head>
- <title>A Page containing free JS</title>
- </head>
- <body>
- <div id="bod" style="white-space: pre-wrap;">
-@license magnet:?xt=urn:btih:0ef1b8170b3b615170ff270def6427c317705f85&dn=lgpl-3.0.txt LGPL-3.0
-console.log("free js");
-@license-end
-eval("console.log('nontrivial mystery code')");
-@license magnet:?xt=urn:btih:b8999bbaf509c08d127678643c515b9ab0836bae&dn=ISC.txt ISC
-console.log("free js");
-@license-end
- </div>
- </body>
-</html>
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-29 05:37:17 +0000