michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this file,
michael@0:  * You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: "use strict";
michael@0: 
michael@0: /* static functions */
michael@0: let DEBUG = 0;
michael@0: let debug;
michael@0: if (DEBUG) {
michael@0:   debug = function (s) { dump("-*- PermissionPromptService: " + s + "\n"); };
michael@0: }
michael@0: else {
michael@0:   debug = function (s) {};
michael@0: }
michael@0: 
michael@0: const Cc = Components.classes;
michael@0: const Ci = Components.interfaces;
michael@0: const Cu = Components.utils;
michael@0: 
michael@0: Cu.import("resource://gre/modules/XPCOMUtils.jsm");
michael@0: Cu.import("resource://gre/modules/Services.jsm");
michael@0: Cu.import("resource://gre/modules/PermissionsInstaller.jsm");
michael@0: 
michael@0: const PERMISSIONPROMPTSERVICE_CONTRACTID = "@mozilla.org/permission-prompt-service;1";
michael@0: const PERMISSIONPROMPTSERVICE_CID = Components.ID("{e5f953b3-a6ca-444e-a88d-cdc81383741c}");
michael@0: const permissionPromptService = Ci.nsIPermissionPromptService;
michael@0: 
michael@0: var permissionManager = Cc["@mozilla.org/permissionmanager;1"].getService(Ci.nsIPermissionManager);
michael@0: var secMan = Cc["@mozilla.org/scriptsecuritymanager;1"].getService(Ci.nsIScriptSecurityManager);
michael@0: 
michael@0: function makePrompt()
michael@0: {
michael@0:   return Cc["@mozilla.org/content-permission/prompt;1"].createInstance(Ci.nsIContentPermissionPrompt);
michael@0: }
michael@0: 
michael@0: function PermissionPromptService()
michael@0: {
michael@0:   debug("Constructor");
michael@0: }
michael@0: 
michael@0: PermissionPromptService.prototype = {
michael@0: 
michael@0:   classID : PERMISSIONPROMPTSERVICE_CID,
michael@0: 
michael@0:   QueryInterface : XPCOMUtils.generateQI([permissionPromptService, Ci.nsIObserver]),
michael@0: 
michael@0:   classInfo : XPCOMUtils.generateCI({classID: PERMISSIONPROMPTSERVICE_CID,
michael@0:                                      contractID: PERMISSIONPROMPTSERVICE_CONTRACTID,
michael@0:                                      classDescription: "PermissionPromptService",
michael@0:                                      interfaces: [permissionPromptService]
michael@0:                                      }),
michael@0:   /**
michael@0:    * getPermission
michael@0:    *   Ask for permission for an API, device, etc.
michael@0:    * @param nsIContentPermissionRequest aRequest
michael@0:    * @returns void
michael@0:    **/
michael@0:   getPermission: function PS_getPermission(aRequest)
michael@0:   {
michael@0:     if (!(aRequest instanceof Ci.nsIContentPermissionRequest)) {
michael@0:       throw new Error("PermissionService.getPermission: "
michael@0:                       + "2nd argument must be type 'nsIContentPermissionRequest'");
michael@0:     }
michael@0: 
michael@0:     // Only allow exactly one permission request here.
michael@0:     let types = aRequest.types.QueryInterface(Ci.nsIArray);
michael@0:     if (types.length != 1) {
michael@0:       aRequest.cancel();
michael@0:       return;
michael@0:     }
michael@0:     let reqType = types.queryElementAt(0, Ci.nsIContentPermissionType);
michael@0: 
michael@0:     let type = reqType.access !== "unused" ? reqType.type + "-" + reqType.access
michael@0:                                            : reqType.type;
michael@0:     let perm =
michael@0:       permissionManager.testExactPermissionFromPrincipal(aRequest.principal, type);
michael@0: 
michael@0:     switch (perm) {
michael@0:       case Ci.nsIPermissionManager.ALLOW_ACTION:
michael@0:         aRequest.allow();
michael@0:         break;
michael@0:       case Ci.nsIPermissionManager.PROMPT_ACTION:
michael@0:         makePrompt().prompt(aRequest);
michael@0:         break;
michael@0:       case Ci.nsIPermissionManager.DENY_ACTION:
michael@0:       case Ci.nsIPermissionManager.UNKNOWN_ACTION:
michael@0:     default:
michael@0:       aRequest.cancel();
michael@0:       break;
michael@0:     }
michael@0:   },
michael@0: };
michael@0: 
michael@0: this.NSGetFactory = XPCOMUtils.generateNSGetFactory([PermissionPromptService]);