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path: root/toolkit/components/urlformatter/URLFormatter.jsm
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/* 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/. */

/**
 * @class nsURLFormatterService
 *
 * nsURLFormatterService exposes methods to substitute variables in URL formats.
 *
 * Mozilla Applications linking to Mozilla websites are strongly encouraged to use
 * URLs of the following format:
 *
 *   http[s]://%SERVICE%.mozilla.[com|org]/%LOCALE%/
 */

const { XPCOMUtils } = ChromeUtils.import(
  "resource://gre/modules/XPCOMUtils.jsm"
);
const { Services } = ChromeUtils.import("resource://gre/modules/Services.jsm");
const { AppConstants } = ChromeUtils.import(
  "resource://gre/modules/AppConstants.jsm"
);

const PREF_APP_DISTRIBUTION = "distribution.id";
const PREF_APP_DISTRIBUTION_VERSION = "distribution.version";

ChromeUtils.defineModuleGetter(
  this,
  "UpdateUtils",
  "resource://gre/modules/UpdateUtils.jsm"
);

ChromeUtils.defineModuleGetter(
  this,
  "Region",
  "resource://gre/modules/Region.jsm"
);

function nsURLFormatterService() {
  XPCOMUtils.defineLazyGetter(this, "ABI", function UFS_ABI() {
    let ABI = "default";
    try {
      ABI = Services.appinfo.XPCOMABI;
    } catch (e) {}

    return ABI;
  });

  XPCOMUtils.defineLazyGetter(this, "OSVersion", function UFS_OSVersion() {
    let OSVersion = "default";
    let { sysinfo } = Services;
    try {
      OSVersion =
        sysinfo.getProperty("name") + " " + sysinfo.getProperty("version");
      OSVersion += ` (${sysinfo.getProperty("secondaryLibrary")})`;
    } catch (e) {}

    return encodeURIComponent(OSVersion);
  });

  XPCOMUtils.defineLazyGetter(
    this,
    "distribution",
    function UFS_distribution() {
      let defaults = Services.prefs.getDefaultBranch(null);
      let id = defaults.getCharPref(PREF_APP_DISTRIBUTION, "default");
      let version = defaults.getCharPref(
        PREF_APP_DISTRIBUTION_VERSION,
        "default"
      );

      return { id, version };
    }
  );
}

nsURLFormatterService.prototype = {
  classID: Components.ID("{e6156350-2be8-11db-a98b-0800200c9a66}"),
  QueryInterface: ChromeUtils.generateQI(["nsIURLFormatter"]),

  _defaults: {
    LOCALE: () => Services.locale.appLocaleAsBCP47,
    REGION() {
      try {
        // When the geoip lookup failed to identify the region, we fallback to
        // the 'ZZ' region code to mean 'unknown'.
        return Region.home || "ZZ";
      } catch (e) {
        return "ZZ";
      }
    },
    VENDOR() {
      return Services.appinfo.vendor;
    },
    NAME() {
      return Services.appinfo.name;
    },
    ID() {
      return Services.appinfo.ID;
    },
    VERSION() {
      return Services.appinfo.version;
    },
    MAJOR_VERSION() {
      return Services.appinfo.version.replace(
        /^([^\.]+\.[0-9]+[a-z]*).*/gi,
        "$1"
      );
    },
    APPBUILDID() {
      return Services.appinfo.appBuildID;
    },
    PLATFORMVERSION() {
      return Services.appinfo.platformVersion;
    },
    PLATFORMBUILDID() {
      return Services.appinfo.platformBuildID;
    },
    APP() {
      return Services.appinfo.name.toLowerCase().replace(/ /, "");
    },
    OS() {
      return Services.appinfo.OS;
    },
    XPCOMABI() {
      return this.ABI;
    },
    BUILD_TARGET() {
      return Services.appinfo.OS + "_" + this.ABI;
    },
    OS_VERSION() {
      return this.OSVersion;
    },
    CHANNEL: () => UpdateUtils.UpdateChannel,
    MOZILLA_API_KEY: () => AppConstants.MOZ_MOZILLA_API_KEY,
    GOOGLE_LOCATION_SERVICE_API_KEY: () =>
      AppConstants.MOZ_GOOGLE_LOCATION_SERVICE_API_KEY,
    GOOGLE_SAFEBROWSING_API_KEY: () =>
      AppConstants.MOZ_GOOGLE_SAFEBROWSING_API_KEY,
    BING_API_CLIENTID: () => AppConstants.MOZ_BING_API_CLIENTID,
    BING_API_KEY: () => AppConstants.MOZ_BING_API_KEY,
    DISTRIBUTION() {
      return this.distribution.id;
    },
    DISTRIBUTION_VERSION() {
      return this.distribution.version;
    },
  },

  formatURL: function uf_formatURL(aFormat) {
    var _this = this;
    var replacementCallback = function(aMatch, aKey) {
      if (aKey in _this._defaults) {
        return _this._defaults[aKey].call(_this);
      }
      Cu.reportError("formatURL: Couldn't find value for key: " + aKey);
      return aMatch;
    };
    return aFormat.replace(/%([A-Z_]+)%/g, replacementCallback);
  },

  formatURLPref: function uf_formatURLPref(aPref) {
    var format = null;

    try {
      format = Services.prefs.getStringPref(aPref);
    } catch (ex) {
      Cu.reportError("formatURLPref: Couldn't get pref: " + aPref);
      return "about:blank";
    }

    if (
      !Services.prefs.prefHasUserValue(aPref) &&
      /^(data:text\/plain,.+=.+|chrome:\/\/.+\/locale\/.+\.properties)$/.test(
        format
      )
    ) {
      // This looks as if it might be a localised preference
      try {
        format = Services.prefs.getComplexValue(
          aPref,
          Ci.nsIPrefLocalizedString
        ).data;
      } catch (ex) {}
    }

    return this.formatURL(format);
  },

  trimSensitiveURLs: function uf_trimSensitiveURLs(aMsg) {
    // Only the google API keys is sensitive for now.
    aMsg = AppConstants.MOZ_GOOGLE_LOCATION_SERVICE_API_KEY
      ? aMsg.replace(
          RegExp(AppConstants.MOZ_GOOGLE_LOCATION_SERVICE_API_KEY, "g"),
          "[trimmed-google-api-key]"
        )
      : aMsg;
    return AppConstants.MOZ_GOOGLE_SAFEBROWSING_API_KEY
      ? aMsg.replace(
          RegExp(AppConstants.MOZ_GOOGLE_SAFEBROWSING_API_KEY, "g"),
          "[trimmed-google-api-key]"
        )
      : aMsg;
  },
};

var EXPORTED_SYMBOLS = ["nsURLFormatterService"];