gecko-dev/dom/permission/PermissionSettings.js

156 lines
6.0 KiB
JavaScript

/* 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/. */
"use strict";
function debug(aMsg) {
//dump("-*- PermissionSettings.js: " + aMsg + "\n");
}
const Cc = Components.classes;
const Ci = Components.interfaces;
const Cu = Components.utils;
Cu.import("resource://gre/modules/XPCOMUtils.jsm");
Cu.import("resource://gre/modules/Services.jsm");
Cu.import("resource://gre/modules/PermissionsTable.jsm");
var cpm = Cc["@mozilla.org/childprocessmessagemanager;1"].getService(Ci.nsISyncMessageSender);
// PermissionSettings
const PERMISSIONSETTINGS_CONTRACTID = "@mozilla.org/permissionSettings;1";
const PERMISSIONSETTINGS_CID = Components.ID("{cd2cf7a1-f4c1-487b-8c1b-1a71c7097431}");
const nsIDOMPermissionSettings = Ci.nsIDOMPermissionSettings;
function PermissionSettings()
{
debug("Constructor");
}
XPCOMUtils.defineLazyServiceGetter(this,
"permissionManager",
"@mozilla.org/permissionmanager;1",
"nsIPermissionManager");
XPCOMUtils.defineLazyServiceGetter(this,
"secMan",
"@mozilla.org/scriptsecuritymanager;1",
"nsIScriptSecurityManager");
XPCOMUtils.defineLazyServiceGetter(this,
"appsService",
"@mozilla.org/AppsService;1",
"nsIAppsService");
PermissionSettings.prototype = {
get: function get(aPermName, aManifestURL, aOrigin, aBrowserFlag) {
debug("Get called with: " + aPermName + ", " + aManifestURL + ", " + aOrigin + ", " + aBrowserFlag);
let uri = Services.io.newURI(aOrigin, null, null);
let appID = appsService.getAppLocalIdByManifestURL(aManifestURL);
let principal = secMan.getAppCodebasePrincipal(uri, appID, aBrowserFlag);
let result = permissionManager.testExactPermanentPermission(principal, aPermName);
switch (result)
{
case Ci.nsIPermissionManager.UNKNOWN_ACTION:
return "unknown";
case Ci.nsIPermissionManager.ALLOW_ACTION:
return "allow";
case Ci.nsIPermissionManager.DENY_ACTION:
return "deny";
case Ci.nsIPermissionManager.PROMPT_ACTION:
return "prompt";
default:
dump("Unsupported PermissionSettings Action!\n");
return "unknown";
}
},
isExplicit: function isExplicit(aPermName, aManifestURL, aOrigin,
aBrowserFlag) {
debug("isExplicit: " + aPermName + ", " + aManifestURL + ", " + aOrigin);
let uri = Services.io.newURI(aOrigin, null, null);
let appID = appsService.getAppLocalIdByManifestURL(aManifestURL);
let principal = secMan.getAppCodebasePrincipal(uri, appID, aBrowserFlag);
return isExplicitInPermissionsTable(aPermName, principal.appStatus);
},
set: function set(aPermName, aPermValue, aManifestURL, aOrigin,
aBrowserFlag) {
debug("Set called with: " + aPermName + ", " + aManifestURL + ", " +
aOrigin + ", " + aPermValue + ", " + aBrowserFlag);
let currentPermValue = this.get(aPermName, aManifestURL, aOrigin,
aBrowserFlag);
let action;
// Check for invalid calls so that we throw an exception rather than get
// killed by parent process
if (currentPermValue === "unknown" ||
aPermValue === "unknown" ||
!this.isExplicit(aPermName, aManifestURL, aOrigin, aBrowserFlag)) {
let errorMsg = "PermissionSettings.js: '" + aPermName + "'" +
" is an implicit permission for '" + aManifestURL +
"' or the permission isn't set";
Cu.reportError(errorMsg);
throw new Components.Exception(errorMsg);
}
cpm.sendSyncMessage("PermissionSettings:AddPermission", {
type: aPermName,
origin: aOrigin,
manifestURL: aManifestURL,
value: aPermValue,
browserFlag: aBrowserFlag
});
},
remove: function remove(aPermName, aManifestURL, aOrigin) {
let uri = Services.io.newURI(aOrigin, null, null);
let appID = appsService.getAppLocalIdByManifestURL(aManifestURL);
let principal = secMan.getAppCodebasePrincipal(uri, appID, true);
if (principal.appStatus !== Ci.nsIPrincipal.APP_STATUS_NOT_INSTALLED) {
let errorMsg = "PermissionSettings.js: '" + aOrigin + "'" +
" is installed or permission is implicit, cannot remove '" +
aPermName + "'.";
Cu.reportError(errorMsg);
throw new Components.Exception(errorMsg);
}
// PermissionSettings.jsm handles delete when value is "unknown"
cpm.sendSyncMessage("PermissionSettings:AddPermission", {
type: aPermName,
origin: aOrigin,
manifestURL: aManifestURL,
value: "unknown",
browserFlag: true
});
},
init: function init(aWindow) {
debug("init");
// Set navigator.mozPermissionSettings to null.
let perm = Services.perms.testExactPermissionFromPrincipal(aWindow.document.nodePrincipal, "permissions");
if (!Services.prefs.getBoolPref("dom.mozPermissionSettings.enabled")
|| perm != Ci.nsIPermissionManager.ALLOW_ACTION) {
return null;
}
debug("Permission to get/set permissions granted!");
},
classID : PERMISSIONSETTINGS_CID,
QueryInterface : XPCOMUtils.generateQI([nsIDOMPermissionSettings, Ci.nsIDOMGlobalPropertyInitializer]),
classInfo : XPCOMUtils.generateCI({classID: PERMISSIONSETTINGS_CID,
contractID: PERMISSIONSETTINGS_CONTRACTID,
classDescription: "PermissionSettings",
interfaces: [nsIDOMPermissionSettings],
flags: Ci.nsIClassInfo.DOM_OBJECT})
}
this.NSGetFactory = XPCOMUtils.generateNSGetFactory([PermissionSettings])