1 files changed, 51 insertions, 0 deletions
diff --git a/modules/QuotaManager.jsm b/modules/QuotaManager.jsm
new file mode 100644
index 0000000..48cfe88
--- /dev/null
+++ b/modules/QuotaManager.jsm
@@ -0,0 +1,51 @@
+/* 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/. */
+ 
+this.EXPORTED_SYMBOLS = ["QuotaManagerHelper"];
+
+Components.utils.import('resource://gre/modules/Services.jsm');
+
+const Ci = Components.interfaces;
+const Cc = Components.classes;
+const Cu = Components.utils;
+
+this.QuotaManagerHelper = {
+  clear: function(isShutDown) {
+    try {
+      var stord = Services.dirsvc.get("ProfD", Ci.nsIFile);
+      stord.append("storage");
+      if (stord.exists() && stord.isDirectory()) {
+        var doms = {};
+        for (var stor of ["default", "permanent", "temporary"]) {
+          var storsubd = stord.clone();
+          storsubd.append(stor);
+          if (storsubd.exists() && storsubd.isDirectory()) {
+            var entries = storsubd.directoryEntries;
+            while(entries.hasMoreElements()) {
+              var host, entry = entries.getNext();
+              entry.QueryInterface(Ci.nsIFile);
+              if ((host = /^(https?|file)\+\+\+(.+)$/.exec(entry.leafName)) !== null) {
+                if (isShutDown) {
+                  entry.remove(true);
+                } else {
+                  doms[host[1] + "://" + host[2]] = true;
+                }
+              }
+            }
+          }
+        }
+        var qm = Cc["@mozilla.org/dom/quota-manager-service;1"]
+                 .getService(Ci.nsIQuotaManagerService);
+        for (var dom in doms) {
+          var uri = Services.io.newURI(dom, null, null);
+          let principal = Services.scriptSecurityManager
+                          .createCodebasePrincipal(uri, {});
+          qm.clearStoragesForPrincipal(principal);
+        }
+      }
+    } catch(er) {
+      Cu.reportError(er);
+    }
+  }
+};