Merge remote-tracking branch 'tool/block_cloudflare_mitm_fx/master'
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# MIT License
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Copyright (c) 2017–2018 cypherpunk, nullius. All rights reserved.
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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# Block Cloudflare MITM Attack
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**Pull requests are welcome!**
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The purpose of this browser add-on is to block Cloudflare sites.
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The TLS protocol promises end-to-end encryption between the client and an authenticated, identified endpoint server. The browser’s lock icon is a UI widget which makes this promise to the user. Cloudflare is a mass-decryption chokepoint, which intercepts and decrypts the Web requests made by billions of people to millions of websites.
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- Prior discussion: [Tor Browser Bug #24351: Block Global Active Adversary Cloudflare](https://trac.torproject.org/projects/tor/ticket/24351)
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- Imported from [block_cloudflare_mitm_attack-1.0.10.1-an+fx.xpi](https://addons.mozilla.org/en-US/firefox/addon/block-cloudflare-mitm-attack/), by an anonymous cypherpunk. “Cyperpunks write code.” Cheers!
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- [Original announcement](https://trac.torproject.org/projects/tor/ticket/24351#comment:25)
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- Thanks to [Debian Bug #831835](https://bugs.debian.org/831835) for some inspiration.
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MIT License
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Copyright (c) 2017-2018 cypherpunk, nullius. All rights reserved.
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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{
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"manifest_version": 2,
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"name": "Block Cloudflare MiTM Attack",
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"description": "If the destination website use Cloudflare, block further request.",
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"version": "1.0.10.1",
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"homepage_url": "https://trac.torproject.org/projects/tor/ticket/24351",
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"permissions": ["webRequest","webRequestBlocking","<all_urls>","storage","activeTab","tabs"],
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"options_ui": {
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"page": "setwhitelist.html",
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"browser_style": false
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},
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"icons": {
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"32": "icons/icon-32.png",
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"48": "icons/icon-48.png",
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"64": "icons/icon-64.png"
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},
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"browser_action": {
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"browser_style": true,
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"default_icon": {
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"16": "icons/icon-16.png",
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"32": "icons/icon-32.png"
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}
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},
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"background": {"scripts": ["stop_cf_mitm.js"]},
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"applications": {
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"gecko": {
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"id": "{d86b44dd-ef12-4f28-ab1c-ea32664490ac}",
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"strict_min_version": "52.0"
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}
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}
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}
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<html><head><meta charset="utf-8"><link rel="stylesheet" href="style.css"></head><body><form>
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[Whitelist]<br>
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1. Add FQDN or .FQDN you want to ignore. Click "Save".<br>
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2. Open new tab and visit whitelisted website.<br>
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<small>(<i><b>.</b>mozilla.org</i> will allow <i>mozilla.org</i> and <i>*.mozilla.org</i>)</small><br>
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<textarea cols="50" rows="12" id="myset_cfwhite" wrap="off"></textarea><br>
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<label><input type="checkbox" id="myset_xautoclean"> Auto-remove whitelisted domain if it is no longer use MITM services</label><br><small>(Add-on will notify you)</small><br>
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<br>
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[Advanced]<br>
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<label><input type="checkbox" id="myset_xign3p"> Ignore 3rd party resource (not recommend)</label><br>
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<label><input type="checkbox" id="myset_xwhitemark"> Change whitelisted website's title, favicon, and website border</label><br>
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<label><input type="checkbox" checked disabled> I don't like Man-in-the-middle attack.</label><br><!-- justajokedonttakethisseriouslyLOL //-->
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<br>
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Also detect:<br>
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<label><input type="checkbox" id="myset_xincapsula"> Incapsula MiTM</label><br>
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<label><input type="checkbox" id="myset_xgshield"> Google's Project Shield MiTM</label><br>
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<label><input type="checkbox" id="myset_xsucuri"> Sucuri MiTM</label><br>
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<br>
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When MiTM attempt is detected:<br>
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<label><input type="radio" name="acttype" id="myset_xsimplewarn_0" value="0"> Show security warning page</label><br>
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<label><input type="radio" name="acttype" id="myset_xsimplewarn_1" value="1"> Just change title, favicon, and website border</label><br>
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<label><input type="radio" name="acttype" id="myset_xsimplewarn_2" value="2"> Cancel request immediately</label><br>
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<br>
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<input type="submit" value=" Save ">
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</form><script src="setwhitelist.js"></script>
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</body></html>
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function onError(e){console.log(`CFMITM_CFG Error:${e}`);}
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function saveWhitelist(e){
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e.preventDefault();
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//WHITELIST
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// check each line and remove bad fqdn (simple check)
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var cf_tmpdata=document.querySelector("#myset_cfwhite").value.split("\n");
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for (var i=0;i<cf_tmpdata.length;i++){
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if (!/^([0-9a-z.-]{1,})\.([a-z]{2,20})$/.test(cf_tmpdata[i])||cf_tmpdata[i].includes("..")||
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cf_tmpdata[i].endsWith(".cloudflare.com")||cf_tmpdata[i]=='cloudflare.com'||
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cf_tmpdata[i].endsWith(".incapsula.com")||cf_tmpdata[i]=='incapsula.com'||
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cf_tmpdata[i].endsWith(".withgoogle.com")||cf_tmpdata[i].endsWith(".google.com")){cf_tmpdata[i]='';}
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}
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cf_tmpdata=cf_tmpdata.slice().sort(function(a,b){return a>b}).reduce(function(a,b){if (a.slice(-1)[0]!==b){a.push(b);};return a;},[]);// -duplicate
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cf_tmpdata=cf_tmpdata.filter(v=>v!='');// -empty
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cf_tmpdata=cf_tmpdata.join("\n");
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browser.storage.local.set({myset_cfwhite: cf_tmpdata});document.querySelector("#myset_cfwhite").value=cf_tmpdata;
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//workaround - simplewarn didn't work as expected if ign3p is active
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if (document.querySelector("#myset_xsimplewarn_1").checked){document.querySelector("#myset_xign3p").checked=false;}
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//ADVANCED
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if (document.querySelector("#myset_xautoclean").checked){browser.storage.local.set({myset_xautoclean: "y"});}else{browser.storage.local.set({myset_xautoclean: "n"});}
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if (document.querySelector("#myset_xincapsula").checked){browser.storage.local.set({myset_xincapsula: "y"});}else{browser.storage.local.set({myset_xincapsula: "n"});}
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if (document.querySelector("#myset_xgshield").checked){browser.storage.local.set({myset_xgshield: "y"});}else{browser.storage.local.set({myset_xgshield: "n"});}
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if (document.querySelector("#myset_xsucuri").checked){browser.storage.local.set({myset_xsucuri: "y"});}else{browser.storage.local.set({myset_xsucuri: "n"});}
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if (document.querySelector("#myset_xign3p").checked){browser.storage.local.set({myset_xign3p: "y"});}else{browser.storage.local.set({myset_xign3p: "n"});}
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if (document.querySelector("#myset_xwhitemark").checked){browser.storage.local.set({myset_xwhitemark: "y"});}else{browser.storage.local.set({myset_xwhitemark: "n"});}
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//ACTION
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if (document.querySelector("#myset_xsimplewarn_0").checked){browser.storage.local.set({myset_xsimplewarn:0});}
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if (document.querySelector("#myset_xsimplewarn_1").checked){browser.storage.local.set({myset_xsimplewarn:1});}
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if (document.querySelector("#myset_xsimplewarn_2").checked){browser.storage.local.set({myset_xsimplewarn:2});}
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browser.runtime.sendMessage({relnow:'go'}).then(function(r){},onError);
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}
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function loadWhitelist(){
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function setCurrentChoice(r){
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//WHITELIST
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document.querySelector("#myset_cfwhite").value = r.myset_cfwhite||"";
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//ADVANCED
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if (r.myset_xautoclean=='y'){document.querySelector("#myset_xautoclean").checked=true;}else{document.querySelector("#myset_xautoclean").checked=false;}
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if (r.myset_xincapsula=='y'){document.querySelector("#myset_xincapsula").checked=true;}else{document.querySelector("#myset_xincapsula").checked=false;}
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if (r.myset_xgshield=='y'){document.querySelector("#myset_xgshield").checked=true;}else{document.querySelector("#myset_xgshield").checked=false;}
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if (r.myset_xsucuri=='y'){document.querySelector("#myset_xsucuri").checked=true;}else{document.querySelector("#myset_xsucuri").checked=false;}
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if (r.myset_xign3p=='y'){document.querySelector("#myset_xign3p").checked=true;}else{document.querySelector("#myset_xign3p").checked=false;}
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if (r.myset_xwhitemark=='y'){document.querySelector("#myset_xwhitemark").checked=true;}else{document.querySelector("#myset_xwhitemark").checked=false;}
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if (r.myset_xsimplewarn){switch(r.myset_xsimplewarn){
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case 1:document.querySelector("#myset_xsimplewarn_1").checked=true;break;
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case 2:document.querySelector("#myset_xsimplewarn_2").checked=true;break;
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default:document.querySelector("#myset_xsimplewarn_0").checked=true;break;
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}}else{document.querySelector("#myset_xsimplewarn_0").checked=true;}
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}
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var getting=browser.storage.local.get();getting.then(setCurrentChoice,onError);
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}
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document.addEventListener("DOMContentLoaded", loadWhitelist);
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document.querySelector("form").addEventListener("submit", saveWhitelist);
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body{font:13px Verdana}
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label{-webkit-user-select:none;-moz-user-select:none}
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textarea{white-space:pre;overflow-wrap:normal;overflow-x:scroll}
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