1 files changed, 275 insertions, 0 deletions
diff --git a/toolkit/mozapps/extensions/content/aboutaddonsCommon.js b/toolkit/mozapps/extensions/content/aboutaddonsCommon.js
new file mode 100644
index 0000000000..739e7629d7
--- /dev/null
+++ b/toolkit/mozapps/extensions/content/aboutaddonsCommon.js
@@ -0,0 +1,275 @@
+/* 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 max-len: ["error", 80] */
+
+"use strict";
+
+/* exported attachUpdateHandler, detachUpdateHandler, gBrowser,
+ *          getBrowserElement, installAddonsFromFilePicker,
+ *          isCorrectlySigned, isDisabledUnsigned, isDiscoverEnabled,
+ *          isPending, loadReleaseNotes, openOptionsInTab, promiseEvent,
+ *          shouldShowPermissionsPrompt, showPermissionsPrompt,
+ *          PREF_UI_LASTCATEGORY */
+
+const { AddonSettings } = ChromeUtils.importESModule(
+  "resource://gre/modules/addons/AddonSettings.sys.mjs"
+);
+var { XPCOMUtils } = ChromeUtils.importESModule(
+  "resource://gre/modules/XPCOMUtils.sys.mjs"
+);
+
+const HTML_NS = "http://www.w3.org/1999/xhtml";
+
+ChromeUtils.defineESModuleGetters(this, {
+  Extension: "resource://gre/modules/Extension.sys.mjs",
+});
+
+XPCOMUtils.defineLazyPreferenceGetter(
+  this,
+  "XPINSTALL_ENABLED",
+  "xpinstall.enabled",
+  true
+);
+
+const PREF_DISCOVER_ENABLED = "extensions.getAddons.showPane";
+const PREF_UI_LASTCATEGORY = "extensions.ui.lastCategory";
+
+function isDiscoverEnabled() {
+  try {
+    if (!Services.prefs.getBoolPref(PREF_DISCOVER_ENABLED)) {
+      return false;
+    }
+  } catch (e) {}
+
+  if (!XPINSTALL_ENABLED) {
+    return false;
+  }
+
+  return true;
+}
+
+function getBrowserElement() {
+  return window.docShell.chromeEventHandler;
+}
+
+function promiseEvent(event, target, capture = false) {
+  return new Promise(resolve => {
+    target.addEventListener(event, resolve, { capture, once: true });
+  });
+}
+
+function installPromptHandler(info) {
+  const install = this;
+
+  let oldPerms = info.existingAddon.userPermissions;
+  if (!oldPerms) {
+    // Updating from a legacy add-on, let it proceed
+    return Promise.resolve();
+  }
+
+  let newPerms = info.addon.userPermissions;
+
+  let difference = Extension.comparePermissions(oldPerms, newPerms);
+
+  // If there are no new permissions, just proceed
+  if (!difference.origins.length && !difference.permissions.length) {
+    return Promise.resolve();
+  }
+
+  return new Promise((resolve, reject) => {
+    let subject = {
+      wrappedJSObject: {
+        target: getBrowserElement(),
+        info: {
+          type: "update",
+          addon: info.addon,
+          icon: info.addon.iconURL,
+          // Reference to the related AddonInstall object (used in
+          // AMTelemetry to link the recorded event to the other events from
+          // the same install flow).
+          install,
+          permissions: difference,
+          resolve,
+          reject,
+        },
+      },
+    };
+    Services.obs.notifyObservers(subject, "webextension-permission-prompt");
+  });
+}
+
+function attachUpdateHandler(install) {
+  install.promptHandler = installPromptHandler;
+}
+
+function detachUpdateHandler(install) {
+  if (install?.promptHandler === installPromptHandler) {
+    install.promptHandler = null;
+  }
+}
+
+async function loadReleaseNotes(uri) {
+  const res = await fetch(uri.spec, { credentials: "omit" });
+
+  if (!res.ok) {
+    throw new Error("Error loading release notes");
+  }
+
+  // Load the content.
+  const text = await res.text();
+
+  // Setup the content sanitizer.
+  const ParserUtils = Cc["@mozilla.org/parserutils;1"].getService(
+    Ci.nsIParserUtils
+  );
+  const flags =
+    ParserUtils.SanitizerDropMedia |
+    ParserUtils.SanitizerDropNonCSSPresentation |
+    ParserUtils.SanitizerDropForms;
+
+  // Sanitize and parse the content to a fragment.
+  const context = document.createElementNS(HTML_NS, "div");
+  return ParserUtils.parseFragment(text, flags, false, uri, context);
+}
+
+function openOptionsInTab(optionsURL) {
+  let mainWindow = window.windowRoot.ownerGlobal;
+  if ("switchToTabHavingURI" in mainWindow) {
+    mainWindow.switchToTabHavingURI(optionsURL, true, {
+      relatedToCurrent: true,
+      triggeringPrincipal: Services.scriptSecurityManager.getSystemPrincipal(),
+    });
+    return true;
+  }
+  return false;
+}
+
+function shouldShowPermissionsPrompt(addon) {
+  if (!addon.isWebExtension || addon.seen) {
+    return false;
+  }
+
+  let perms = addon.userPermissions;
+  return perms?.origins.length || perms?.permissions.length;
+}
+
+function showPermissionsPrompt(addon) {
+  return new Promise(resolve => {
+    const permissions = addon.userPermissions;
+    const target = getBrowserElement();
+
+    const onAddonEnabled = () => {
+      // The user has just enabled a sideloaded extension, if the permission
+      // can be changed for the extension, show the post-install panel to
+      // give the user that opportunity.
+      if (
+        addon.permissions & AddonManager.PERM_CAN_CHANGE_PRIVATEBROWSING_ACCESS
+      ) {
+        Services.obs.notifyObservers(
+          { addon, target },
+          "webextension-install-notify"
+        );
+      }
+      resolve();
+    };
+
+    const subject = {
+      wrappedJSObject: {
+        target,
+        info: {
+          type: "sideload",
+          addon,
+          icon: addon.iconURL,
+          permissions,
+          resolve() {
+            addon.markAsSeen();
+            addon.enable().then(onAddonEnabled);
+          },
+          reject() {
+            // Ignore a cancelled permission prompt.
+          },
+        },
+      },
+    };
+    Services.obs.notifyObservers(subject, "webextension-permission-prompt");
+  });
+}
+
+// Stub tabbrowser implementation for use by the tab-modal alert code
+// when an alert/prompt/confirm method is called in a WebExtensions options_ui
+// page (See Bug 1385548 for rationale).
+var gBrowser = {
+  getTabModalPromptBox(browser) {
+    const parentWindow = window.docShell.chromeEventHandler.ownerGlobal;
+
+    if (parentWindow.gBrowser) {
+      return parentWindow.gBrowser.getTabModalPromptBox(browser);
+    }
+
+    return null;
+  },
+};
+
+function isCorrectlySigned(addon) {
+  // Add-ons without an "isCorrectlySigned" property are correctly signed as
+  // they aren't the correct type for signing.
+  return addon.isCorrectlySigned !== false;
+}
+
+function isDisabledUnsigned(addon) {
+  let signingRequired =
+    addon.type == "locale"
+      ? AddonSettings.LANGPACKS_REQUIRE_SIGNING
+      : AddonSettings.REQUIRE_SIGNING;
+  return signingRequired && !isCorrectlySigned(addon);
+}
+
+function isPending(addon, action) {
+  const amAction = AddonManager["PENDING_" + action.toUpperCase()];
+  return !!(addon.pendingOperations & amAction);
+}
+
+async function installAddonsFromFilePicker() {
+  let [dialogTitle, filterName] = await document.l10n.formatMessages([
+    { id: "addon-install-from-file-dialog-title" },
+    { id: "addon-install-from-file-filter-name" },
+  ]);
+  const nsIFilePicker = Ci.nsIFilePicker;
+  var fp = Cc["@mozilla.org/filepicker;1"].createInstance(nsIFilePicker);
+  fp.init(window, dialogTitle.value, nsIFilePicker.modeOpenMultiple);
+  try {
+    fp.appendFilter(filterName.value, "*.xpi;*.jar;*.zip");
+    fp.appendFilters(nsIFilePicker.filterAll);
+  } catch (e) {}
+
+  return new Promise(resolve => {
+    fp.open(async result => {
+      if (result != nsIFilePicker.returnOK) {
+        return;
+      }
+
+      let installTelemetryInfo = {
+        source: "about:addons",
+        method: "install-from-file",
+      };
+
+      let browser = getBrowserElement();
+      let installs = [];
+      for (let file of fp.files) {
+        let install = await AddonManager.getInstallForFile(
+          file,
+          null,
+          installTelemetryInfo
+        );
+        AddonManager.installAddonFromAOM(
+          browser,
+          document.documentURIObject,
+          install
+        );
+        installs.push(install);
+      }
+      resolve(installs);
+    });
+  });
+}