path: root/bootstrap.js

/*
 This Source Code Form is subject to the terms of the Mozilla Public
 License, v. 2.0. If a copy of the MPL was not distributed with this
 file, You can obtain one at http://mozilla.org/MPL/2.0/.

 GitHub Web Components Polyfill Add-on
 Copyright (c) 2020 JustOff. All rights reserved.

 Element.prototype.toggleAttribute and Array.prototype.flat polyfills
 Copyright (c) 2005-2020 Mozilla and individual contributors.
 https://developer.mozilla.org/docs/Web/API/Element/toggleAttribute
 https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/flat

 Array.prototype.flatMap polyfill
 Copyright (c) 2017 Aluan Haddad.
 https://github.com/aluanhaddad/flat-map

 PerformanceObserver polyfill
 Copyright (c) 2020 Fastly, Inc.
 https://github.com/fastly/performance-observer-polyfill

 Promise.any polyfill
 Copyright (c) 2019, Andrea Giammarchi, @WebReflection
 https://github.com/ungap/promise-any

 Custom Elements polyfill
 Copyright (c) 2020 The Polymer Project Authors. All rights reserved.
 https://github.com/webcomponents/polyfills

 Shadow DOM polyfill
 Copyright (c) 2018 The Polymer Project Authors. All rights reserved.
 https://github.com/webcomponents/polyfills
*/

"use strict";

var Cc = Components.classes, Ci = Components.interfaces, Cu = Components.utils;

Cu.import("resource://gre/modules/Services.jsm");
Cu.import("resource://gre/modules/XPCOMUtils.jsm");

const isSeaMonkey = Services.appinfo.name == "SeaMonkey";

const pfSeaMonkey = `(function(){
if (!Element.prototype.toggleAttribute) {
  Element.prototype.toggleAttribute = function(name, force) {
    if(force !== void 0) force = !!force 
    
    if (this.hasAttribute(name)) {
      if (force) return true;

      this.removeAttribute(name);
      return false;
    }
    if (force === false) return false;
      
    this.setAttribute(name, "");
    return true;
  };
}
function flattenIntoArray(target, source, start, depth, mapperFunction, thisArg) {
  const mapperFunctionProvied = mapperFunction !== undefined;
  let targetIndex = start;
  let sourceIndex = 0;
  const sourceLen = source.length;
  while (sourceIndex < sourceLen) {
    const p = sourceIndex;
    const exists = !!source[p];
    if (exists === true) {
      let element = source[p];
      if (element) {
        if (mapperFunctionProvied) {
          element = mapperFunction.call(thisArg, element, sourceIndex, target);
        }
        const spreadable = Object.getOwnPropertySymbols(element).includes(Symbol.isConcatSpreadable) || Array.isArray(element);
        if (spreadable === true && depth > 0) {
          const nextIndex = flattenIntoArray(target, element, targetIndex, depth - 1);
          targetIndex = nextIndex;
        } else {
          if (!Number.isSafeInteger(targetIndex)) {
            throw TypeError();
          }
          target[targetIndex] = element;
        }
      }
    }
    targetIndex += 1;
    sourceIndex += 1;
  }
  return targetIndex;
}
function arraySpeciesCreate(originalArray, length) {
  const isArray = Array.isArray(originalArray);
  if (!isArray) {
    return Array(length);
  }
  let C = Object.getPrototypeOf(originalArray).constructor;
  if (C) {
    if (typeof C === 'object' || typeof C === 'function') {
      C = C[Symbol.species.toString()];
      C = C !== null ? C : undefined;
    }
    if (C === undefined) {
      return Array(length);
    }
    if (typeof C !== 'function') {
      throw TypeError('invalid constructor');
    }
    const result = new C(length);
    return result;
  }
}
if (!Object.prototype.hasOwnProperty.call(Array.prototype, 'flatMap')) {
  Array.prototype.flatMap = function flatMap(callbackFn, thisArg) {
    const o = Object(this);
    if (!callbackFn || typeof callbackFn.call !== 'function') {
      throw TypeError('callbackFn must be callable.');
    }
    const t = thisArg !== undefined ? thisArg : undefined;
    const a = arraySpeciesCreate(o, o.length);
    flattenIntoArray(a, o, 0, 1, callbackFn, t);
    return a.filter(x => x !== undefined, a);
  };
}
if (!Array.prototype.flat) {
  Array.prototype.flat = function() {
    var depth = arguments[0];
    depth = depth === undefined ? 1 : Math.floor(depth);
    if (depth < 1) return Array.prototype.slice.call(this);
    return (function flat(arr, depth) {
      var len = arr.length >>> 0;
      var flattened = [];
      var i = 0;
      while (i < len) {
        if (i in arr) {
          var el = arr[i];
          if (Array.isArray(el) && depth > 0)
            flattened = flattened.concat(flat(el, depth - 1));
          else flattened.push(el);
        }
        i++;
      }
      return flattened;
    })(this, depth);
  };
}
}).call(this);`;
const hashSeaMonkey = "'sha256-e4RJ1+xAp4xhtpaeSLNr50yP+/R80IwoR3JYjsq58MY='";
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// Known GitLab instances based on https://gitlab.com/vednoc/dark-gitlab/-/blob/master/gitlab.user.css
const glmask = "^gitlab.|^((0xacab|framagit)\.org|code\.(briarproject\.org|foxkit\.us|videolan\.org)|dev\.gajim\.org|forge\.tedomum\.net|git\.(alchemyviewer\.org|callpipe\.com|cardiff\.ac\.uk|cit\.bcit\.ca|coop|drk\.sc|drupalcode\.org|empiresmod\.com|feneas\.org|fosscommunity\.in|gnu\.io|happy-dev\.fr|immc\.ucl\.ac\.be|jami\.net|ligo\.org|linux-kernel\.at|najer\.info|nzoss\.org\.nz|oeru\.org|pleroma\.social|pwmt\.org|rockylinux\.org|silence\.dev|synz\.io)|gitgud\.io|gitplac\.si|invent\.kde\.org|lab\.libreho\.st|mau\.dev|mpeg\.expert|opencode\.net|repo\.getmonero\.org|salsa\.debian\.org|skylab\.vc\.h-brs\.de|source\.(joinmastodon\.org|puri\.sm|small-tech\.org))$";
const githost = new RegExp("^(gist\.)?github\.com$|" + glmask);
const gitlab = new RegExp(glmask);
const gitlabjs = new RegExp("^/assets/webpack/.+\.chunk\.js$");

var cookie;

var httpObserver = {
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    if ((topic == "http-on-examine-response" || topic == "http-on-examine-cached-response") &&
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            let csp = subject.getResponseHeader("Content-Security-Policy");
            if (gitlab.test(subject.URI.host)) {
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            } else {
              csp = csp.replace(/script-src /g, "script-src " + hashBase + " ");
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                csp = csp.replace(/script-src /g, "script-src github.com gist.github.com " + hashSeaMonkey + " ");
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              }
            }
            subject.setResponseHeader("Content-Security-Policy", csp, false);
          } catch (e) {}
          subject.QueryInterface(Ci.nsITraceableChannel);
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          if (gitlab.test(subject.URI.host)) {
            newListener.site = "gitlab";
          } else {
            newListener.site = "github";
          }
          newListener.originalListener = subject.setNewListener(newListener);
        } else if (gitlab.test(subject.URI.host) && gitlabjs.test(subject.URI.path)) {
          subject.QueryInterface(Ci.nsITraceableChannel);
          let newListener = new tracingListener();
          newListener.site = "gitlabjs";
          newListener.originalListener = subject.setNewListener(newListener);
        } else if (subject.URI.path.indexOf("/socket-worker-") != -1) {
          let csp = subject.getResponseHeader("Content-Security-Policy");
          csp = csp.replace(/worker-src /g, "worker-src github.githubassets.com ");
          subject.setResponseHeader("Content-Security-Policy", csp, false);
        }
      } catch (e) {}
    } else if (isSeaMonkey && topic == "http-on-modify-request" && subject instanceof Ci.nsIHttpChannel &&
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      try {
        cookie = subject.getRequestHeader("Cookie");
      } catch (e) {
        if (cookie) {
          subject.setRequestHeader("Cookie", cookie, false);
        }
      }
    }
  },
  QueryInterface: XPCOMUtils.generateQI([Ci.nsIObserver, Ci.nsISupportsWeakReference])
};

function tracingListener () {
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}

tracingListener.prototype = {
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    let binaryInputStream = Cc["@mozilla.org/binaryinputstream;1"].createInstance(Ci["nsIBinaryInputStream"]);
    binaryInputStream.setInputStream(inputStream);
    let data = binaryInputStream.readBytes(count);
    this.receivedData.push(data);
  },
  onStartRequest: function (request, context) {
    try {
      this.originalListener.onStartRequest(request, context);
    } catch (err) {
      request.cancel(err.result);
    }
  },
  onStopRequest: function (request, context, statusCode) {
    let data = this.receivedData.join("");
    try {
      if (this.site == "github") {
        data = data.replace("<head>", "<head><script crossorigin=\"anonymous\" integrity=\"sha512-g4ztuyuFPzjTvIqYBeZdHEDaHz2K6RCz4RszsnL3m5ko4kiWCjB9W6uIScLkNr8l/BtC2dYiIFkOdOLDYBHLqQ==\" type=\"application/javascript\" src=\"https://github.githubassets.com/assets/compat-838cedbb.js\"></script>");
        data = data.replace("<head>", "<head><script>" + pfBase + "</script>");
        if (isSeaMonkey) {
          data = data.replace("<head>", "<head><script>" + pfSeaMonkey + "</script>");
        }
      } else if (this.site == "gitlab") {
        data = data.replace("<script", "<script>" + customElements + "</script><script");
      } else if (this.site == "gitlabjs") {
        // https://gitlab.com/gitlab-org/gitlab/-/commit/5522a5ffb6a0522e11dd684cce5c5e99ae6c24ce
        data = data.replace("(?<iid>", "(").replace(".groups.iid", "[1]");
        // https://gitlab.com/gitlab-org/gitlab-ui/-/commit/d23c341bb8cef5683bf2d49556dabe4008be76cf
        data = data.replace("\\p{Emoji}", "[\\u{1f300}-\\u{1f5ff}\\u{1f900}-\\u{1f9ff}\\u{1f600}-\\u{1f64f}\\u{1f680}-\\u{1f6ff}\\u{2600}-\\u{26ff}\\u{2700}-\\u{27bf}\\u{1f1e6}-\\u{1f1ff}\\u{1f191}-\\u{1f251}\\u{1f004}\\u{1f0cf}\\u{1f170}-\\u{1f171}\\u{1f17e}-\\u{1f17f}\\u{1f18e}\\u{3030}\\u{2b50}\\u{2b55}\\u{2934}-\\u{2935}\\u{2b05}-\\u{2b07}\\u{2b1b}-\\u{2b1c}\\u{3297}\\u{3299}\\u{303d}\\u{00a9}\\u{00ae}\\u{2122}\\u{23f3}\\u{24c2}\\u{23e9}-\\u{23ef}\\u{25b6}\\u{23f8}-\\u{23fa}]");
      }
    } catch (e) {}
    let storageStream = Cc["@mozilla.org/storagestream;1"].createInstance(Ci["nsIStorageStream"]);
    storageStream.init(8192, data.length, null);
    let os = storageStream.getOutputStream(0);
    if (data.length > 0) {
      os.write(data, data.length);
    }
    os.close();
    try {
      this.originalListener.onDataAvailable(request, context, storageStream.newInputStream(0), 0, data.length);
    } catch (e) {}
    try {
      this.originalListener.onStopRequest(request, context, statusCode);
    } catch (e) {}
  },
  QueryInterface: XPCOMUtils.generateQI([Ci.nsIStreamListener, Ci.nsISupports])
}

function startup(data, reason) {
  Services.obs.addObserver(httpObserver, "http-on-examine-response", false);
  Services.obs.addObserver(httpObserver, "http-on-examine-cached-response", false);
  if (isSeaMonkey) {
    Services.obs.addObserver(httpObserver, "http-on-modify-request", false);
  }
}

function shutdown(data, reason) {
  if (reason == APP_SHUTDOWN) {
    return;
  }
  if (isSeaMonkey) {
    Services.obs.removeObserver(httpObserver, "http-on-modify-request", false);
  }
  Services.obs.removeObserver(httpObserver, "http-on-examine-cached-response", false);
  Services.obs.removeObserver(httpObserver, "http-on-examine-response", false);
}

function install() {}

function uninstall() {}