Backed out changeset 2cc97556735f (bug 1314177)

toolkit/mozapps/extensions/internal/XPIProvider.jsm

@@ -8500,6 +8500,43 @@ class SystemAddonInstallLocation extends MutableDirectoryInstallLocation {
     this.locked = false;
   }
 
+  /**
+   * Removes the specified files or directories in the staging directory and
+   * then if the staging directory is empty attempts to remove it.
+   *
+   * @param  aLeafNames
+   *         An array of file or directory to remove from the directory, the
+   *         array may be empty
+   */
+  cleanStagingDir(aLeafNames = []) {
+    let dir = this.getStagingDir();
+
+    for (let name of aLeafNames) {
+      let file = dir.clone();
+      file.append(name);
+      recursiveRemove(file);
+    }
+
+    if (this._stagingDirLock > 0)
+      return;
+
+    let dirEntries = dir.directoryEntries.QueryInterface(Ci.nsIDirectoryEnumerator);
+    try {
+      if (dirEntries.nextFile)
+        return;
+    } finally {
+      dirEntries.close();
+    }
+
+    try {
+      setFilePermissions(dir, FileUtils.PERMS_DIRECTORY);
+      dir.remove(false);
+    } catch (e) {
+      logger.warn("Failed to remove staging dir", e);
+      // Failing to remove the staging directory is ignorable
+    }
+  }
+
   /**
    * Gets the staging directory to put add-ons that are pending install and
    * uninstall into.
@@ -8522,12 +8559,35 @@ class SystemAddonInstallLocation extends MutableDirectoryInstallLocation {
   }
 
   requestStagingDir() {
+    this._stagingDirLock++;
+    if (this._stagingDirPromise)
+      return this._stagingDirPromise;
+
     this._addonSet = SystemAddonInstallLocation._loadAddonSet();
     if (this._addonSet.directory) {
       this._directory = this._baseDir.clone();
       this._directory.append(this._addonSet.directory);
     }
-    return super.requestStagingDir();
+
+    OS.File.makeDir(this._directory.path);
+    let stagepath = OS.Path.join(this._directory.path, DIR_STAGE);
+    return this._stagingDirPromise = OS.File.makeDir(stagepath).then(null, (e) => {
+      if (e instanceof OS.File.Error && e.becauseExists)
+        return;
+      logger.error("Failed to create staging directory", e);
+      throw e;
+    });
+  }
+
+  releaseStagingDir() {
+    this._stagingDirLock--;
+
+    if (this._stagingDirLock == 0) {
+      this._stagingDirPromise = null;
+      this.cleanStagingDir();
+    }
+
+    return Promise.resolve();
   }
 
   /**
@@ -8555,7 +8615,7 @@ class SystemAddonInstallLocation extends MutableDirectoryInstallLocation {
    * @param {Object} aAddonSet - object containing schema, directory and set
    *                 of system add-on IDs and versions.
    */
-  static _saveAddonSet(aAddonSet) {
+  _saveAddonSet(aAddonSet) {
     Preferences.set(PREF_SYSTEM_ADDON_SET, JSON.stringify(aAddonSet));
   }
 
@@ -8640,7 +8700,7 @@ class SystemAddonInstallLocation extends MutableDirectoryInstallLocation {
     // remove everything from the pref first, if uninstall
     // fails then at least they will not be re-activated on
     // next restart.
-    SystemAddonInstallLocation._saveAddonSet({ schema: 1, addons: {} });
+    this._saveAddonSet({ schema: 1, addons: {} });
 
     // If this is running at app startup, the pref being cleared
     // will cause later stages of startup to notice that the
@@ -8750,7 +8810,7 @@ class SystemAddonInstallLocation extends MutableDirectoryInstallLocation {
 
     // Record the new upgrade directory.
     let state = { schema: 1, directory: newDir.leafName, addons: {} };
-    SystemAddonInstallLocation._saveAddonSet(state);
+    this._saveAddonSet(state);
 
     this._nextDir = newDir;
     let location = this;
@@ -8791,7 +8851,7 @@ class SystemAddonInstallLocation extends MutableDirectoryInstallLocation {
       }
 
       previousState = SystemAddonInstallLocation._loadAddonSet();
-      SystemAddonInstallLocation._saveAddonSet(state);
+      this._saveAddonSet(state);
 
       let blockers = aAddons.filter(
         addon => AddonManagerPrivate.hasUpgradeListener(addon.id)
@@ -8805,7 +8865,7 @@ class SystemAddonInstallLocation extends MutableDirectoryInstallLocation {
     } catch (e) {
       // Roll back to previous upgrade set (if present) on restart.
       if (previousState) {
-        SystemAddonInstallLocation._saveAddonSet(previousState);
+        this._saveAddonSet(previousState);
       }
       // Otherwise, roll back to built-in set on restart.
       // TODO try to do these restartlessly
@@ -8824,7 +8884,7 @@ class SystemAddonInstallLocation extends MutableDirectoryInstallLocation {
   * Resumes upgrade of a previously-delayed add-on set.
   */
   async resumeAddonSet(installs) {
-    async function resumeAddon(install) {
+    function resumeAddon(install) {
       install.state = AddonManager.STATE_DOWNLOADED;
       install.installLocation.releaseStagingDir();
       install.install();
@@ -9016,6 +9076,24 @@ class WinRegInstallLocation extends DirectoryInstallLocation {
     return this._name;
   }
 
+  /**
+   * Gets the scope of this install location.
+   */
+  get scope() {
+    return this._scope;
+  }
+
+  /**
+   * Gets an array of nsIFiles for add-ons installed in this location.
+   */
+  getAddonLocations() {
+    let locations = new Map();
+    for (let id in this._IDToFileMap) {
+      locations.set(id, this._IDToFileMap[id].clone());
+    }
+    return locations;
+  }
+
   /**
    * @see DirectoryInstallLocation
    */