Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 1326 insertions, 0 deletions

diff --git a/browser/base/content/browser-siteIdentity.js b/browser/base/content/browser-siteIdentity.js
new file mode 100644
index 0000000000..fb243dcb8f
--- /dev/null
+++ b/browser/base/content/browser-siteIdentity.js
@@ -0,0 +1,1326 @@
+/* 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/. */
+
+/* eslint-env mozilla/browser-window */
+
+/**
+ * Utility object to handle manipulations of the identity indicators in the UI
+ */
+var gIdentityHandler = {
+  /**
+   * nsIURI for which the identity UI is displayed. This has been already
+   * processed by createExposableURI.
+   */
+  _uri: null,
+
+  /**
+   * We only know the connection type if this._uri has a defined "host" part.
+   *
+   * These URIs, like "about:", "file:" and "data:" URIs, will usually be treated as a
+   * an unknown connection.
+   */
+  _uriHasHost: false,
+
+  /**
+   * If this tab belongs to a WebExtension, contains its WebExtensionPolicy.
+   */
+  _pageExtensionPolicy: null,
+
+  /**
+   * Whether this._uri refers to an internally implemented browser page.
+   *
+   * Note that this is set for some "about:" pages, but general "chrome:" URIs
+   * are not included in this category by default.
+   */
+  _isSecureInternalUI: false,
+
+  /**
+   * Whether the content window is considered a "secure context". This
+   * includes "potentially trustworthy" origins such as file:// URLs or localhost.
+   * https://w3c.github.io/webappsec-secure-contexts/#is-origin-trustworthy
+   */
+  _isSecureContext: false,
+
+  /**
+   * nsITransportSecurityInfo metadata provided by gBrowser.securityUI the last
+   * time the identity UI was updated, or null if the connection is not secure.
+   */
+  _secInfo: null,
+
+  /**
+   * Bitmask provided by nsIWebProgressListener.onSecurityChange.
+   */
+  _state: 0,
+
+  /**
+   * Whether the established HTTPS connection is considered "broken".
+   * This could have several reasons, such as mixed content or weak
+   * cryptography. If this is true, _isSecureConnection is false.
+   */
+  get _isBrokenConnection() {
+    return this._state & Ci.nsIWebProgressListener.STATE_IS_BROKEN;
+  },
+
+  /**
+   * Whether the connection to the current site was done via secure
+   * transport. Note that this attribute is not true in all cases that
+   * the site was accessed via HTTPS, i.e. _isSecureConnection will
+   * be false when _isBrokenConnection is true, even though the page
+   * was loaded over HTTPS.
+   */
+  get _isSecureConnection() {
+    // If a <browser> is included within a chrome document, then this._state
+    // will refer to the security state for the <browser> and not the top level
+    // document. In this case, don't upgrade the security state in the UI
+    // with the secure state of the embedded <browser>.
+    return (
+      !this._isURILoadedFromFile &&
+      this._state & Ci.nsIWebProgressListener.STATE_IS_SECURE
+    );
+  },
+
+  get _isEV() {
+    // If a <browser> is included within a chrome document, then this._state
+    // will refer to the security state for the <browser> and not the top level
+    // document. In this case, don't upgrade the security state in the UI
+    // with the EV state of the embedded <browser>.
+    return (
+      !this._isURILoadedFromFile &&
+      this._state & Ci.nsIWebProgressListener.STATE_IDENTITY_EV_TOPLEVEL
+    );
+  },
+
+  get _isMixedActiveContentLoaded() {
+    return (
+      this._state & Ci.nsIWebProgressListener.STATE_LOADED_MIXED_ACTIVE_CONTENT
+    );
+  },
+
+  get _isMixedActiveContentBlocked() {
+    return (
+      this._state & Ci.nsIWebProgressListener.STATE_BLOCKED_MIXED_ACTIVE_CONTENT
+    );
+  },
+
+  get _isMixedPassiveContentLoaded() {
+    return (
+      this._state & Ci.nsIWebProgressListener.STATE_LOADED_MIXED_DISPLAY_CONTENT
+    );
+  },
+
+  get _isContentHttpsOnlyModeUpgraded() {
+    return (
+      this._state & Ci.nsIWebProgressListener.STATE_HTTPS_ONLY_MODE_UPGRADED
+    );
+  },
+
+  get _isContentHttpsOnlyModeUpgradeFailed() {
+    return (
+      this._state &
+      Ci.nsIWebProgressListener.STATE_HTTPS_ONLY_MODE_UPGRADE_FAILED
+    );
+  },
+
+  get _isCertUserOverridden() {
+    return this._state & Ci.nsIWebProgressListener.STATE_CERT_USER_OVERRIDDEN;
+  },
+
+  get _isCertErrorPage() {
+    let { documentURI } = gBrowser.selectedBrowser;
+    if (documentURI?.scheme != "about") {
+      return false;
+    }
+
+    return (
+      documentURI.filePath == "certerror" ||
+      (documentURI.filePath == "neterror" &&
+        new URLSearchParams(documentURI.query).get("e") == "nssFailure2")
+    );
+  },
+
+  get _isAboutNetErrorPage() {
+    let { documentURI } = gBrowser.selectedBrowser;
+    return documentURI?.scheme == "about" && documentURI.filePath == "neterror";
+  },
+
+  get _isAboutHttpsOnlyErrorPage() {
+    let { documentURI } = gBrowser.selectedBrowser;
+    return (
+      documentURI?.scheme == "about" && documentURI.filePath == "httpsonlyerror"
+    );
+  },
+
+  get _isPotentiallyTrustworthy() {
+    return (
+      !this._isBrokenConnection &&
+      (this._isSecureContext ||
+        gBrowser.selectedBrowser.documentURI?.scheme == "chrome")
+    );
+  },
+
+  get _isAboutBlockedPage() {
+    let { documentURI } = gBrowser.selectedBrowser;
+    return documentURI?.scheme == "about" && documentURI.filePath == "blocked";
+  },
+
+  _popupInitialized: false,
+  _initializePopup() {
+    window.ensureCustomElements("moz-support-link");
+    if (!this._popupInitialized) {
+      let wrapper = document.getElementById("template-identity-popup");
+      wrapper.replaceWith(wrapper.content);
+      this._popupInitialized = true;
+    }
+  },
+
+  hidePopup() {
+    if (this._popupInitialized) {
+      PanelMultiView.hidePopup(this._identityPopup);
+    }
+  },
+
+  // smart getters
+  get _identityPopup() {
+    if (!this._popupInitialized) {
+      return null;
+    }
+    delete this._identityPopup;
+    return (this._identityPopup = document.getElementById("identity-popup"));
+  },
+  get _identityBox() {
+    delete this._identityBox;
+    return (this._identityBox = document.getElementById("identity-box"));
+  },
+  get _identityIconBox() {
+    delete this._identityIconBox;
+    return (this._identityIconBox =
+      document.getElementById("identity-icon-box"));
+  },
+  get _identityPopupMultiView() {
+    delete this._identityPopupMultiView;
+    return (this._identityPopupMultiView = document.getElementById(
+      "identity-popup-multiView"
+    ));
+  },
+  get _identityPopupMainView() {
+    delete this._identityPopupMainView;
+    return (this._identityPopupMainView = document.getElementById(
+      "identity-popup-mainView"
+    ));
+  },
+  get _identityPopupMainViewHeaderLabel() {
+    delete this._identityPopupMainViewHeaderLabel;
+    return (this._identityPopupMainViewHeaderLabel = document.getElementById(
+      "identity-popup-mainView-panel-header-span"
+    ));
+  },
+  get _identityPopupSecurityView() {
+    delete this._identityPopupSecurityView;
+    return (this._identityPopupSecurityView = document.getElementById(
+      "identity-popup-securityView"
+    ));
+  },
+  get _identityPopupHttpsOnlyModeMenuList() {
+    delete this._identityPopupHttpsOnlyModeMenuList;
+    return (this._identityPopupHttpsOnlyModeMenuList = document.getElementById(
+      "identity-popup-security-httpsonlymode-menulist"
+    ));
+  },
+  get _identityPopupHttpsOnlyModeMenuListTempItem() {
+    delete this._identityPopupHttpsOnlyModeMenuListTempItem;
+    return (this._identityPopupHttpsOnlyModeMenuListTempItem =
+      document.getElementById("identity-popup-security-menulist-tempitem"));
+  },
+  get _identityPopupSecurityEVContentOwner() {
+    delete this._identityPopupSecurityEVContentOwner;
+    return (this._identityPopupSecurityEVContentOwner = document.getElementById(
+      "identity-popup-security-ev-content-owner"
+    ));
+  },
+  get _identityPopupContentOwner() {
+    delete this._identityPopupContentOwner;
+    return (this._identityPopupContentOwner = document.getElementById(
+      "identity-popup-content-owner"
+    ));
+  },
+  get _identityPopupContentSupp() {
+    delete this._identityPopupContentSupp;
+    return (this._identityPopupContentSupp = document.getElementById(
+      "identity-popup-content-supplemental"
+    ));
+  },
+  get _identityPopupContentVerif() {
+    delete this._identityPopupContentVerif;
+    return (this._identityPopupContentVerif = document.getElementById(
+      "identity-popup-content-verifier"
+    ));
+  },
+  get _identityPopupCustomRootLearnMore() {
+    delete this._identityPopupCustomRootLearnMore;
+    return (this._identityPopupCustomRootLearnMore = document.getElementById(
+      "identity-popup-custom-root-learn-more"
+    ));
+  },
+  get _identityPopupMixedContentLearnMore() {
+    delete this._identityPopupMixedContentLearnMore;
+    return (this._identityPopupMixedContentLearnMore = [
+      ...document.querySelectorAll(".identity-popup-mcb-learn-more"),
+    ]);
+  },
+
+  get _identityIconLabel() {
+    delete this._identityIconLabel;
+    return (this._identityIconLabel = document.getElementById(
+      "identity-icon-label"
+    ));
+  },
+  get _overrideService() {
+    delete this._overrideService;
+    return (this._overrideService = Cc[
+      "@mozilla.org/security/certoverride;1"
+    ].getService(Ci.nsICertOverrideService));
+  },
+  get _identityIcon() {
+    delete this._identityIcon;
+    return (this._identityIcon = document.getElementById("identity-icon"));
+  },
+  get _clearSiteDataFooter() {
+    delete this._clearSiteDataFooter;
+    return (this._clearSiteDataFooter = document.getElementById(
+      "identity-popup-clear-sitedata-footer"
+    ));
+  },
+
+  get _insecureConnectionIconEnabled() {
+    delete this._insecureConnectionIconEnabled;
+    XPCOMUtils.defineLazyPreferenceGetter(
+      this,
+      "_insecureConnectionIconEnabled",
+      "security.insecure_connection_icon.enabled"
+    );
+    return this._insecureConnectionIconEnabled;
+  },
+  get _insecureConnectionIconPBModeEnabled() {
+    delete this._insecureConnectionIconPBModeEnabled;
+    XPCOMUtils.defineLazyPreferenceGetter(
+      this,
+      "_insecureConnectionIconPBModeEnabled",
+      "security.insecure_connection_icon.pbmode.enabled"
+    );
+    return this._insecureConnectionIconPBModeEnabled;
+  },
+  get _insecureConnectionTextEnabled() {
+    delete this._insecureConnectionTextEnabled;
+    XPCOMUtils.defineLazyPreferenceGetter(
+      this,
+      "_insecureConnectionTextEnabled",
+      "security.insecure_connection_text.enabled"
+    );
+    return this._insecureConnectionTextEnabled;
+  },
+  get _insecureConnectionTextPBModeEnabled() {
+    delete this._insecureConnectionTextPBModeEnabled;
+    XPCOMUtils.defineLazyPreferenceGetter(
+      this,
+      "_insecureConnectionTextPBModeEnabled",
+      "security.insecure_connection_text.pbmode.enabled"
+    );
+    return this._insecureConnectionTextPBModeEnabled;
+  },
+  get _protectionsPanelEnabled() {
+    delete this._protectionsPanelEnabled;
+    XPCOMUtils.defineLazyPreferenceGetter(
+      this,
+      "_protectionsPanelEnabled",
+      "browser.protections_panel.enabled",
+      false
+    );
+    return this._protectionsPanelEnabled;
+  },
+  get _httpsOnlyModeEnabled() {
+    delete this._httpsOnlyModeEnabled;
+    XPCOMUtils.defineLazyPreferenceGetter(
+      this,
+      "_httpsOnlyModeEnabled",
+      "dom.security.https_only_mode"
+    );
+    return this._httpsOnlyModeEnabled;
+  },
+  get _httpsOnlyModeEnabledPBM() {
+    delete this._httpsOnlyModeEnabledPBM;
+    XPCOMUtils.defineLazyPreferenceGetter(
+      this,
+      "_httpsOnlyModeEnabledPBM",
+      "dom.security.https_only_mode_pbm"
+    );
+    return this._httpsOnlyModeEnabledPBM;
+  },
+
+  /**
+   * Handles clicks on the "Clear Cookies and Site Data" button.
+   */
+  async clearSiteData(event) {
+    if (!this._uriHasHost) {
+      return;
+    }
+
+    // Hide the popup before showing the removal prompt, to
+    // avoid a pretty ugly transition. Also hide it even
+    // if the update resulted in no site data, to keep the
+    // illusion that clicking the button had an effect.
+    let hidden = new Promise(c => {
+      this._identityPopup.addEventListener("popuphidden", c, { once: true });
+    });
+    PanelMultiView.hidePopup(this._identityPopup);
+    await hidden;
+
+    let baseDomain = SiteDataManager.getBaseDomainFromHost(this._uri.host);
+    if (SiteDataManager.promptSiteDataRemoval(window, [baseDomain])) {
+      SiteDataManager.remove(baseDomain);
+    }
+
+    event.stopPropagation();
+  },
+
+  /**
+   * Handler for mouseclicks on the "More Information" button in the
+   * "identity-popup" panel.
+   */
+  handleMoreInfoClick(event) {
+    displaySecurityInfo();
+    event.stopPropagation();
+    PanelMultiView.hidePopup(this._identityPopup);
+  },
+
+  showSecuritySubView() {
+    this._identityPopupMultiView.showSubView(
+      "identity-popup-securityView",
+      document.getElementById("identity-popup-security-button")
+    );
+
+    // Elements of hidden views have -moz-user-focus:ignore but setting that
+    // per CSS selector doesn't blur a focused element in those hidden views.
+    Services.focus.clearFocus(window);
+  },
+
+  disableMixedContentProtection() {
+    // Use telemetry to measure how often unblocking happens
+    const kMIXED_CONTENT_UNBLOCK_EVENT = 2;
+    let histogram = Services.telemetry.getHistogramById(
+      "MIXED_CONTENT_UNBLOCK_COUNTER"
+    );
+    histogram.add(kMIXED_CONTENT_UNBLOCK_EVENT);
+
+    SitePermissions.setForPrincipal(
+      gBrowser.contentPrincipal,
+      "mixed-content",
+      SitePermissions.ALLOW,
+      SitePermissions.SCOPE_SESSION
+    );
+
+    // Reload the page with the content unblocked
+    BrowserReloadWithFlags(Ci.nsIWebNavigation.LOAD_FLAGS_BYPASS_CACHE);
+    if (this._popupInitialized) {
+      PanelMultiView.hidePopup(this._identityPopup);
+    }
+  },
+
+  // This is needed for some tests which need the permission reset, but which
+  // then reuse the browser and would race between the reload and the next
+  // load.
+  enableMixedContentProtectionNoReload() {
+    this.enableMixedContentProtection(false);
+  },
+
+  enableMixedContentProtection(reload = true) {
+    SitePermissions.removeFromPrincipal(
+      gBrowser.contentPrincipal,
+      "mixed-content"
+    );
+    if (reload) {
+      BrowserReload();
+    }
+    if (this._popupInitialized) {
+      PanelMultiView.hidePopup(this._identityPopup);
+    }
+  },
+
+  removeCertException() {
+    if (!this._uriHasHost) {
+      console.error(
+        "Trying to revoke a cert exception on a URI without a host?"
+      );
+      return;
+    }
+    let host = this._uri.host;
+    let port = this._uri.port > 0 ? this._uri.port : 443;
+    this._overrideService.clearValidityOverride(
+      host,
+      port,
+      gBrowser.contentPrincipal.originAttributes
+    );
+    BrowserReloadSkipCache();
+    if (this._popupInitialized) {
+      PanelMultiView.hidePopup(this._identityPopup);
+    }
+  },
+
+  /**
+   * Gets the current HTTPS-Only mode permission for the current page.
+   * Values are the same as in #identity-popup-security-httpsonlymode-menulist
+   */
+  _getHttpsOnlyPermission() {
+    const { state } = SitePermissions.getForPrincipal(
+      gBrowser.contentPrincipal,
+      "https-only-load-insecure"
+    );
+    switch (state) {
+      case Ci.nsIHttpsOnlyModePermission.LOAD_INSECURE_ALLOW_SESSION:
+        return 2; // Off temporarily
+      case Ci.nsIHttpsOnlyModePermission.LOAD_INSECURE_ALLOW:
+        return 1; // Off
+      default:
+        return 0; // On
+    }
+  },
+
+  /**
+   * Sets/removes HTTPS-Only Mode exception and possibly reloads the page.
+   */
+  changeHttpsOnlyPermission() {
+    // Get the new value from the menulist and the current value
+    // Note: value and permission association is laid out
+    //       in _getHttpsOnlyPermission
+    const oldValue = this._getHttpsOnlyPermission();
+    let newValue = parseInt(
+      this._identityPopupHttpsOnlyModeMenuList.selectedItem.value,
+      10
+    );
+
+    // If nothing changed, just return here
+    if (newValue === oldValue) {
+      return;
+    }
+
+    // Permissions set in PMB get deleted anyway, but to make sure, let's make
+    // the permission session-only.
+    if (newValue === 1 && PrivateBrowsingUtils.isWindowPrivate(window)) {
+      newValue = 2;
+    }
+
+    // Usually we want to set the permission for the current site and therefore
+    // the current principal...
+    let principal = gBrowser.contentPrincipal;
+    // ...but if we're on the HTTPS-Only error page, the content-principal is
+    // for HTTPS but. We always want to set the exception for HTTP. (Code should
+    // be almost identical to the one in AboutHttpsOnlyErrorParent.sys.mjs)
+    let newURI;
+    if (this._isAboutHttpsOnlyErrorPage) {
+      newURI = gBrowser.currentURI.mutate().setScheme("http").finalize();
+      principal = Services.scriptSecurityManager.createContentPrincipal(
+        newURI,
+        gBrowser.contentPrincipal.originAttributes
+      );
+    }
+
+    // Set or remove the permission
+    if (newValue === 0) {
+      SitePermissions.removeFromPrincipal(
+        principal,
+        "https-only-load-insecure"
+      );
+    } else if (newValue === 1) {
+      SitePermissions.setForPrincipal(
+        principal,
+        "https-only-load-insecure",
+        Ci.nsIHttpsOnlyModePermission.LOAD_INSECURE_ALLOW,
+        SitePermissions.SCOPE_PERSISTENT
+      );
+    } else {
+      SitePermissions.setForPrincipal(
+        principal,
+        "https-only-load-insecure",
+        Ci.nsIHttpsOnlyModePermission.LOAD_INSECURE_ALLOW_SESSION,
+        SitePermissions.SCOPE_SESSION
+      );
+    }
+
+    // If we're on the error-page, we have to redirect the user
+    // from HTTPS to HTTP. Otherwise we can just reload the page.
+    if (this._isAboutHttpsOnlyErrorPage) {
+      gBrowser.loadURI(newURI, {
+        triggeringPrincipal:
+          Services.scriptSecurityManager.getSystemPrincipal(),
+        loadFlags: Ci.nsIWebNavigation.LOAD_FLAGS_REPLACE_HISTORY,
+      });
+      if (this._popupInitialized) {
+        PanelMultiView.hidePopup(this._identityPopup);
+      }
+      return;
+    }
+    // The page only needs to reload if we switch between allow and block
+    // Because "off" is 1 and "off temporarily" is 2, we can just check if the
+    // sum of newValue and oldValue is 3.
+    if (newValue + oldValue !== 3) {
+      BrowserReloadSkipCache();
+      if (this._popupInitialized) {
+        PanelMultiView.hidePopup(this._identityPopup);
+      }
+      return;
+    }
+    // Otherwise we just refresh the interface
+    this.refreshIdentityPopup();
+  },
+
+  /**
+   * Helper to parse out the important parts of _secInfo (of the SSL cert in
+   * particular) for use in constructing identity UI strings
+   */
+  getIdentityData() {
+    var result = {};
+    var cert = this._secInfo.serverCert;
+
+    // Human readable name of Subject
+    result.subjectOrg = cert.organization;
+
+    // SubjectName fields, broken up for individual access
+    if (cert.subjectName) {
+      result.subjectNameFields = {};
+      cert.subjectName.split(",").forEach(function (v) {
+        var field = v.split("=");
+        this[field[0]] = field[1];
+      }, result.subjectNameFields);
+
+      // Call out city, state, and country specifically
+      result.city = result.subjectNameFields.L;
+      result.state = result.subjectNameFields.ST;
+      result.country = result.subjectNameFields.C;
+    }
+
+    // Human readable name of Certificate Authority
+    result.caOrg = cert.issuerOrganization || cert.issuerCommonName;
+    result.cert = cert;
+
+    return result;
+  },
+
+  _getIsSecureContext() {
+    if (gBrowser.contentPrincipal?.originNoSuffix != "resource://pdf.js") {
+      return gBrowser.securityUI.isSecureContext;
+    }
+
+    // For PDF viewer pages (pdf.js) we can't rely on the isSecureContext field.
+    // The backend will return isSecureContext = true, because the content
+    // principal has a resource:// URI. Instead use the URI of the selected
+    // browser to perform the isPotentiallyTrustWorthy check.
+
+    let principal;
+    try {
+      principal = Services.scriptSecurityManager.createContentPrincipal(
+        gBrowser.selectedBrowser.documentURI,
+        {}
+      );
+      return principal.isOriginPotentiallyTrustworthy;
+    } catch (error) {
+      console.error(
+        "Error while computing isPotentiallyTrustWorthy for pdf viewer page: ",
+        error
+      );
+      return false;
+    }
+  },
+
+  /**
+   * Update the identity user interface for the page currently being displayed.
+   *
+   * This examines the SSL certificate metadata, if available, as well as the
+   * connection type and other security-related state information for the page.
+   *
+   * @param state
+   *        Bitmask provided by nsIWebProgressListener.onSecurityChange.
+   * @param uri
+   *        nsIURI for which the identity UI should be displayed, already
+   *        processed by createExposableURI.
+   */
+  updateIdentity(state, uri) {
+    let shouldHidePopup = this._uri && this._uri.spec != uri.spec;
+    this._state = state;
+
+    // Firstly, populate the state properties required to display the UI. See
+    // the documentation of the individual properties for details.
+    this.setURI(uri);
+    this._secInfo = gBrowser.securityUI.secInfo;
+    this._isSecureContext = this._getIsSecureContext();
+
+    // Then, update the user interface with the available data.
+    this.refreshIdentityBlock();
+    // Handle a location change while the Control Center is focused
+    // by closing the popup (bug 1207542)
+    if (shouldHidePopup) {
+      this.hidePopup();
+      gPermissionPanel.hidePopup();
+    }
+
+    // NOTE: We do NOT update the identity popup (the control center) when
+    // we receive a new security state on the existing page (i.e. from a
+    // subframe). If the user opened the popup and looks at the provided
+    // information we don't want to suddenly change the panel contents.
+  },
+
+  /**
+   * Attempt to provide proper IDN treatment for host names
+   */
+  getEffectiveHost() {
+    if (!this._IDNService) {
+      this._IDNService = Cc["@mozilla.org/network/idn-service;1"].getService(
+        Ci.nsIIDNService
+      );
+    }
+    try {
+      return this._IDNService.convertToDisplayIDN(this._uri.host, {});
+    } catch (e) {
+      // If something goes wrong (e.g. host is an IP address) just fail back
+      // to the full domain.
+      return this._uri.host;
+    }
+  },
+
+  getHostForDisplay() {
+    let host = "";
+
+    try {
+      host = this.getEffectiveHost();
+    } catch (e) {
+      // Some URIs might have no hosts.
+    }
+
+    if (this._uri.schemeIs("about")) {
+      // For example in about:certificate the original URL is
+      // about:certificate?cert=<large base64 encoded data>&cert=<large base64 encoded data>&cert=...
+      // So, instead of showing that large string in the identity panel header, we are just showing
+      // about:certificate now. For the other about pages we are just showing about:<page>
+      host = "about:" + this._uri.filePath;
+    }
+
+    if (this._uri.schemeIs("chrome")) {
+      host = this._uri.spec;
+    }
+
+    let readerStrippedURI = ReaderMode.getOriginalUrlObjectForDisplay(
+      this._uri.displaySpec
+    );
+    if (readerStrippedURI) {
+      host = readerStrippedURI.host;
+    }
+
+    if (this._pageExtensionPolicy) {
+      host = this._pageExtensionPolicy.name;
+    }
+
+    // Fallback for special protocols.
+    if (!host) {
+      host = this._uri.specIgnoringRef;
+    }
+
+    return host;
+  },
+
+  /**
+   * Return the CSS class name to set on the "fullscreen-warning" element to
+   * display information about connection security in the notification shown
+   * when a site enters the fullscreen mode.
+   */
+  get pointerlockFsWarningClassName() {
+    // Note that the fullscreen warning does not handle _isSecureInternalUI.
+    if (this._uriHasHost && this._isSecureConnection) {
+      return "verifiedDomain";
+    }
+    return "unknownIdentity";
+  },
+
+  /**
+   * Returns whether the issuer of the current certificate chain is
+   * built-in (returns false) or imported (returns true).
+   */
+  _hasCustomRoot() {
+    let issuerCert = null;
+    issuerCert =
+      this._secInfo.succeededCertChain[
+        this._secInfo.succeededCertChain.length - 1
+      ];
+
+    return !issuerCert.isBuiltInRoot;
+  },
+
+  /**
+   * Returns whether the current URI results in an "invalid"
+   * URL bar state, which effectively means hidden security
+   * indicators.
+   */
+  _hasInvalidPageProxyState() {
+    return (
+      !this._uriHasHost &&
+      this._uri &&
+      isBlankPageURL(this._uri.spec) &&
+      !this._uri.schemeIs("moz-extension")
+    );
+  },
+
+  /**
+   * Updates the security identity in the identity block.
+   */
+  _refreshIdentityIcons() {
+    let icon_label = "";
+    let tooltip = "";
+
+    if (this._isSecureInternalUI) {
+      // This is a secure internal Firefox page.
+      this._identityBox.className = "chromeUI";
+      let brandBundle = document.getElementById("bundle_brand");
+      icon_label = brandBundle.getString("brandShorterName");
+    } else if (this._pageExtensionPolicy) {
+      // This is a WebExtension page.
+      this._identityBox.className = "extensionPage";
+      let extensionName = this._pageExtensionPolicy.name;
+      icon_label = gNavigatorBundle.getFormattedString(
+        "identity.extension.label",
+        [extensionName]
+      );
+    } else if (this._uriHasHost && this._isSecureConnection) {
+      // This is a secure connection.
+      this._identityBox.className = "verifiedDomain";
+      if (this._isMixedActiveContentBlocked) {
+        this._identityBox.classList.add("mixedActiveBlocked");
+      }
+      if (!this._isCertUserOverridden) {
+        // It's a normal cert, verifier is the CA Org.
+        tooltip = gNavigatorBundle.getFormattedString(
+          "identity.identified.verifier",
+          [this.getIdentityData().caOrg]
+        );
+      }
+    } else if (this._isBrokenConnection) {
+      // This is a secure connection, but something is wrong.
+      this._identityBox.className = "unknownIdentity";
+
+      if (this._isMixedActiveContentLoaded) {
+        this._identityBox.classList.add("mixedActiveContent");
+      } else if (this._isMixedActiveContentBlocked) {
+        this._identityBox.classList.add(
+          "mixedDisplayContentLoadedActiveBlocked"
+        );
+      } else if (this._isMixedPassiveContentLoaded) {
+        this._identityBox.classList.add("mixedDisplayContent");
+      } else {
+        this._identityBox.classList.add("weakCipher");
+      }
+    } else if (this._isCertErrorPage) {
+      // We show a warning lock icon for certificate errors, and
+      // show the "Not Secure" text.
+      this._identityBox.className = "certErrorPage notSecureText";
+      icon_label = gNavigatorBundle.getString("identity.notSecure.label");
+      tooltip = gNavigatorBundle.getString("identity.notSecure.tooltip");
+    } else if (this._isAboutHttpsOnlyErrorPage) {
+      // We show a not secure lock icon for 'about:httpsonlyerror' page.
+      this._identityBox.className = "httpsOnlyErrorPage";
+    } else if (this._isAboutNetErrorPage || this._isAboutBlockedPage) {
+      // Network errors and blocked pages get a more neutral icon
+      this._identityBox.className = "unknownIdentity";
+    } else if (this._isPotentiallyTrustworthy) {
+      // This is a local resource (and shouldn't be marked insecure).
+      this._identityBox.className = "localResource";
+    } else {
+      // This is an insecure connection.
+      let warnOnInsecure =
+        this._insecureConnectionIconEnabled ||
+        (this._insecureConnectionIconPBModeEnabled &&
+          PrivateBrowsingUtils.isWindowPrivate(window));
+      let className = warnOnInsecure ? "notSecure" : "unknownIdentity";
+      this._identityBox.className = className;
+      tooltip = warnOnInsecure
+        ? gNavigatorBundle.getString("identity.notSecure.tooltip")
+        : "";
+
+      let warnTextOnInsecure =
+        this._insecureConnectionTextEnabled ||
+        (this._insecureConnectionTextPBModeEnabled &&
+          PrivateBrowsingUtils.isWindowPrivate(window));
+      if (warnTextOnInsecure) {
+        icon_label = gNavigatorBundle.getString("identity.notSecure.label");
+        this._identityBox.classList.add("notSecureText");
+      }
+    }
+
+    if (this._isCertUserOverridden) {
+      this._identityBox.classList.add("certUserOverridden");
+      // Cert is trusted because of a security exception, verifier is a special string.
+      tooltip = gNavigatorBundle.getString(
+        "identity.identified.verified_by_you"
+      );
+    }
+
+    // Push the appropriate strings out to the UI
+    this._identityIcon.setAttribute("tooltiptext", tooltip);
+
+    if (this._pageExtensionPolicy) {
+      let extensionName = this._pageExtensionPolicy.name;
+      this._identityIcon.setAttribute(
+        "tooltiptext",
+        gNavigatorBundle.getFormattedString("identity.extension.tooltip", [
+          extensionName,
+        ])
+      );
+    }
+
+    this._identityIconLabel.setAttribute("tooltiptext", tooltip);
+    this._identityIconLabel.setAttribute("value", icon_label);
+    this._identityIconLabel.collapsed = !icon_label;
+  },
+
+  /**
+   * Updates the identity block user interface with the data from this object.
+   */
+  refreshIdentityBlock() {
+    if (!this._identityBox) {
+      return;
+    }
+
+    this._refreshIdentityIcons();
+
+    // If this condition is true, the URL bar will have an "invalid"
+    // pageproxystate, so we should hide the permission icons.
+    if (this._hasInvalidPageProxyState()) {
+      gPermissionPanel.hidePermissionIcons();
+    } else {
+      gPermissionPanel.refreshPermissionIcons();
+    }
+
+    // Hide the shield icon if it is a chrome page.
+    gProtectionsHandler._trackingProtectionIconContainer.classList.toggle(
+      "chromeUI",
+      this._isSecureInternalUI
+    );
+  },
+
+  /**
+   * Set up the title and content messages for the identity message popup,
+   * based on the specified mode, and the details of the SSL cert, where
+   * applicable
+   */
+  refreshIdentityPopup() {
+    // Update cookies and site data information and show the
+    // "Clear Site Data" button if the site is storing local data, and
+    // if the page is not controlled by a WebExtension.
+    this._clearSiteDataFooter.hidden = true;
+    let identityPopupPanelView = document.getElementById(
+      "identity-popup-mainView"
+    );
+    identityPopupPanelView.removeAttribute("footerVisible");
+    if (this._uriHasHost && !this._pageExtensionPolicy) {
+      SiteDataManager.hasSiteData(this._uri.asciiHost).then(hasData => {
+        this._clearSiteDataFooter.hidden = !hasData;
+        identityPopupPanelView.setAttribute("footerVisible", hasData);
+      });
+    }
+
+    let customRoot = false;
+
+    // Determine connection security information.
+    let connection = "not-secure";
+    if (this._isSecureInternalUI) {
+      connection = "chrome";
+    } else if (this._pageExtensionPolicy) {
+      connection = "extension";
+    } else if (this._isURILoadedFromFile) {
+      connection = "file";
+    } else if (this._isEV) {
+      connection = "secure-ev";
+    } else if (this._isCertUserOverridden) {
+      connection = "secure-cert-user-overridden";
+    } else if (this._isSecureConnection) {
+      connection = "secure";
+      customRoot = this._hasCustomRoot();
+    } else if (this._isCertErrorPage) {
+      connection = "cert-error-page";
+    } else if (this._isAboutHttpsOnlyErrorPage) {
+      connection = "https-only-error-page";
+    } else if (this._isAboutBlockedPage) {
+      connection = "not-secure";
+    } else if (this._isAboutNetErrorPage) {
+      connection = "net-error-page";
+    } else if (this._isPotentiallyTrustworthy) {
+      connection = "file";
+    }
+
+    let securityButtonNode = document.getElementById(
+      "identity-popup-security-button"
+    );
+
+    let disableSecurityButton = ![
+      "not-secure",
+      "secure",
+      "secure-ev",
+      "secure-cert-user-overridden",
+      "cert-error-page",
+      "net-error-page",
+      "https-only-error-page",
+    ].includes(connection);
+    if (disableSecurityButton) {
+      securityButtonNode.disabled = true;
+      securityButtonNode.classList.remove("subviewbutton-nav");
+    } else {
+      securityButtonNode.disabled = false;
+      securityButtonNode.classList.add("subviewbutton-nav");
+    }
+
+    // Determine the mixed content state.
+    let mixedcontent = [];
+    if (this._isMixedPassiveContentLoaded) {
+      mixedcontent.push("passive-loaded");
+    }
+    if (this._isMixedActiveContentLoaded) {
+      mixedcontent.push("active-loaded");
+    } else if (this._isMixedActiveContentBlocked) {
+      mixedcontent.push("active-blocked");
+    }
+    mixedcontent = mixedcontent.join(" ");
+
+    // We have no specific flags for weak ciphers (yet). If a connection is
+    // broken and we can't detect any mixed content loaded then it's a weak
+    // cipher.
+    let ciphers = "";
+    if (
+      this._isBrokenConnection &&
+      !this._isMixedActiveContentLoaded &&
+      !this._isMixedPassiveContentLoaded
+    ) {
+      ciphers = "weak";
+    }
+
+    // If HTTPS-Only Mode is enabled, check the permission status
+    const privateBrowsingWindow = PrivateBrowsingUtils.isWindowPrivate(window);
+    let httpsOnlyStatus = "";
+    if (
+      this._httpsOnlyModeEnabled ||
+      (privateBrowsingWindow && this._httpsOnlyModeEnabledPBM)
+    ) {
+      // Note: value and permission association is laid out
+      //       in _getHttpsOnlyPermission
+      let value = this._getHttpsOnlyPermission();
+
+      // Because everything in PBM is temporary anyway, we don't need to make the distinction
+      if (privateBrowsingWindow) {
+        if (value === 2) {
+          value = 1;
+        }
+        // Hide "off temporarily" option
+        this._identityPopupHttpsOnlyModeMenuListTempItem.style.display = "none";
+      } else {
+        this._identityPopupHttpsOnlyModeMenuListTempItem.style.display = "";
+      }
+
+      this._identityPopupHttpsOnlyModeMenuList.value = value;
+
+      if (value > 0) {
+        httpsOnlyStatus = "exception";
+      } else if (this._isAboutHttpsOnlyErrorPage) {
+        httpsOnlyStatus = "failed-top";
+      } else if (this._isContentHttpsOnlyModeUpgradeFailed) {
+        httpsOnlyStatus = "failed-sub";
+      } else if (this._isContentHttpsOnlyModeUpgraded) {
+        httpsOnlyStatus = "upgraded";
+      }
+    }
+
+    // Update all elements.
+    let elementIDs = [
+      "identity-popup",
+      "identity-popup-securityView-extended-info",
+    ];
+
+    for (let id of elementIDs) {
+      let element = document.getElementById(id);
+      this._updateAttribute(element, "connection", connection);
+      this._updateAttribute(element, "ciphers", ciphers);
+      this._updateAttribute(element, "mixedcontent", mixedcontent);
+      this._updateAttribute(element, "isbroken", this._isBrokenConnection);
+      this._updateAttribute(element, "customroot", customRoot);
+      this._updateAttribute(element, "httpsonlystatus", httpsOnlyStatus);
+    }
+
+    // Initialize the optional strings to empty values
+    let supplemental = "";
+    let verifier = "";
+    let host = this.getHostForDisplay();
+    let owner = "";
+
+    // Fill in the CA name if we have a valid TLS certificate.
+    if (this._isSecureConnection || this._isCertUserOverridden) {
+      verifier = this._identityIconLabel.tooltipText;
+    }
+
+    // Fill in organization information if we have a valid EV certificate.
+    if (this._isEV) {
+      let iData = this.getIdentityData();
+      owner = iData.subjectOrg;
+      verifier = this._identityIconLabel.tooltipText;
+
+      // Build an appropriate supplemental block out of whatever location data we have
+      if (iData.city) {
+        supplemental += iData.city + "\n";
+      }
+      if (iData.state && iData.country) {
+        supplemental += gNavigatorBundle.getFormattedString(
+          "identity.identified.state_and_country",
+          [iData.state, iData.country]
+        );
+      } else if (iData.state) {
+        // State only
+        supplemental += iData.state;
+      } else if (iData.country) {
+        // Country only
+        supplemental += iData.country;
+      }
+    }
+
+    // Push the appropriate strings out to the UI.
+    document.l10n.setAttributes(
+      this._identityPopupMainViewHeaderLabel,
+      "identity-site-information",
+      {
+        host,
+      }
+    );
+
+    document.l10n.setAttributes(
+      this._identityPopupSecurityView,
+      "identity-header-security-with-host",
+      {
+        host,
+      }
+    );
+
+    this._identityPopupSecurityEVContentOwner.textContent =
+      gNavigatorBundle.getFormattedString("identity.ev.contentOwner2", [owner]);
+
+    this._identityPopupContentOwner.textContent = owner;
+    this._identityPopupContentSupp.textContent = supplemental;
+    this._identityPopupContentVerif.textContent = verifier;
+  },
+
+  setURI(uri) {
+    if (uri.schemeIs("view-source")) {
+      uri = Services.io.newURI(uri.spec.replace(/^view-source:/i, ""));
+    }
+    this._uri = uri;
+
+    try {
+      // Account for file: urls and catch when "" is the value
+      this._uriHasHost = !!this._uri.host;
+    } catch (ex) {
+      this._uriHasHost = false;
+    }
+
+    if (uri.schemeIs("about")) {
+      let module = E10SUtils.getAboutModule(uri);
+      if (module) {
+        let flags = module.getURIFlags(uri);
+        this._isSecureInternalUI = !!(
+          flags & Ci.nsIAboutModule.IS_SECURE_CHROME_UI
+        );
+      }
+    } else {
+      this._isSecureInternalUI = false;
+    }
+    this._pageExtensionPolicy = WebExtensionPolicy.getByURI(uri);
+
+    // Create a channel for the sole purpose of getting the resolved URI
+    // of the request to determine if it's loaded from the file system.
+    this._isURILoadedFromFile = false;
+    let chanOptions = { uri: this._uri, loadUsingSystemPrincipal: true };
+    let resolvedURI;
+    try {
+      resolvedURI = NetUtil.newChannel(chanOptions).URI;
+      if (resolvedURI.schemeIs("jar")) {
+        // Given a URI "jar:<jar-file-uri>!/<jar-entry>"
+        // create a new URI using <jar-file-uri>!/<jar-entry>
+        resolvedURI = NetUtil.newURI(resolvedURI.pathQueryRef);
+      }
+      // Check the URI again after resolving.
+      this._isURILoadedFromFile = resolvedURI.schemeIs("file");
+    } catch (ex) {
+      // NetUtil's methods will throw for malformed URIs and the like
+    }
+  },
+
+  /**
+   * Click handler for the identity-box element in primary chrome.
+   */
+  handleIdentityButtonEvent(event) {
+    event.stopPropagation();
+
+    if (
+      (event.type == "click" && event.button != 0) ||
+      (event.type == "keypress" &&
+        event.charCode != KeyEvent.DOM_VK_SPACE &&
+        event.keyCode != KeyEvent.DOM_VK_RETURN)
+    ) {
+      return; // Left click, space or enter only
+    }
+
+    // Don't allow left click, space or enter if the location has been modified.
+    if (gURLBar.getAttribute("pageproxystate") != "valid") {
+      return;
+    }
+
+    this._openPopup(event);
+  },
+
+  _openPopup(event) {
+    // Make the popup available.
+    this._initializePopup();
+
+    // Update the popup strings
+    this.refreshIdentityPopup();
+
+    // Check the panel state of other panels. Hide them if needed.
+    let openPanels = Array.from(document.querySelectorAll("panel[openpanel]"));
+    for (let panel of openPanels) {
+      PanelMultiView.hidePopup(panel);
+    }
+
+    // Now open the popup, anchored off the primary chrome element
+    PanelMultiView.openPopup(this._identityPopup, this._identityIconBox, {
+      position: "bottomleft topleft",
+      triggerEvent: event,
+    }).catch(console.error);
+  },
+
+  onPopupShown(event) {
+    if (event.target == this._identityPopup) {
+      PopupNotifications.suppressWhileOpen(this._identityPopup);
+      window.addEventListener("focus", this, true);
+    }
+  },
+
+  onPopupHidden(event) {
+    if (event.target == this._identityPopup) {
+      window.removeEventListener("focus", this, true);
+    }
+  },
+
+  handleEvent(event) {
+    let elem = document.activeElement;
+    let position = elem.compareDocumentPosition(this._identityPopup);
+
+    if (
+      !(
+        position &
+        (Node.DOCUMENT_POSITION_CONTAINS | Node.DOCUMENT_POSITION_CONTAINED_BY)
+      ) &&
+      !this._identityPopup.hasAttribute("noautohide")
+    ) {
+      // Hide the panel when focusing an element that is
+      // neither an ancestor nor descendant unless the panel has
+      // @noautohide (e.g. for a tour).
+      PanelMultiView.hidePopup(this._identityPopup);
+    }
+  },
+
+  observe(subject, topic, data) {
+    switch (topic) {
+      case "perm-changed": {
+        // Exclude permissions which do not appear in the UI in order to avoid
+        // doing extra work here.
+        if (!subject) {
+          return;
+        }
+        let { type } = subject.QueryInterface(Ci.nsIPermission);
+        if (SitePermissions.isSitePermission(type)) {
+          this.refreshIdentityBlock();
+        }
+        break;
+      }
+    }
+  },
+
+  onDragStart(event) {
+    const TEXT_SIZE = 14;
+    const IMAGE_SIZE = 16;
+    const SPACING = 5;
+
+    if (gURLBar.getAttribute("pageproxystate") != "valid") {
+      return;
+    }
+
+    let value = gBrowser.currentURI.displaySpec;
+    let urlString = value + "\n" + gBrowser.contentTitle;
+    let htmlString = '<a href="' + value + '">' + value + "</a>";
+
+    let scale = window.devicePixelRatio;
+    let canvas = document.createElementNS(
+      "http://www.w3.org/1999/xhtml",
+      "canvas"
+    );
+    canvas.width = 550 * scale;
+    let ctx = canvas.getContext("2d");
+    ctx.font = `${TEXT_SIZE * scale}px sans-serif`;
+    let tabIcon = gBrowser.selectedTab.iconImage;
+    let image = new Image();
+    image.src = tabIcon.src;
+    let textWidth = ctx.measureText(value).width / scale;
+    let textHeight = parseInt(ctx.font, 10) / scale;
+    let imageHorizontalOffset, imageVerticalOffset;
+    imageHorizontalOffset = imageVerticalOffset = SPACING;
+    let textHorizontalOffset = image.width ? IMAGE_SIZE + SPACING * 2 : SPACING;
+    let textVerticalOffset = textHeight + SPACING - 1;
+    let backgroundColor = "white";
+    let textColor = "black";
+    let totalWidth = image.width
+      ? textWidth + IMAGE_SIZE + 3 * SPACING
+      : textWidth + 2 * SPACING;
+    let totalHeight = image.width
+      ? IMAGE_SIZE + 2 * SPACING
+      : textHeight + 2 * SPACING;
+    ctx.fillStyle = backgroundColor;
+    ctx.fillRect(0, 0, totalWidth * scale, totalHeight * scale);
+    ctx.fillStyle = textColor;
+    ctx.fillText(
+      `${value}`,
+      textHorizontalOffset * scale,
+      textVerticalOffset * scale
+    );
+    try {
+      ctx.drawImage(
+        image,
+        imageHorizontalOffset * scale,
+        imageVerticalOffset * scale,
+        IMAGE_SIZE * scale,
+        IMAGE_SIZE * scale
+      );
+    } catch (e) {
+      // Sites might specify invalid data URIs favicons that
+      // will result in errors when trying to draw, we can
+      // just ignore this case and not paint any favicon.
+    }
+
+    let dt = event.dataTransfer;
+    dt.setData("text/x-moz-url", urlString);
+    dt.setData("text/uri-list", value);
+    dt.setData("text/plain", value);
+    dt.setData("text/html", htmlString);
+    dt.setDragImage(canvas, 16, 16);
+
+    // Don't cover potential drop targets on the toolbars or in content.
+    gURLBar.view.close();
+  },
+
+  _updateAttribute(elem, attr, value) {
+    if (value) {
+      elem.setAttribute(attr, value);
+    } else {
+      elem.removeAttribute(attr);
+    }
+  },
+};