/* 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/. */
/* vim: set ft=javascript : */
"use strict";
var Cm = Components.manager.QueryInterface(Ci.nsIComponentRegistrar);
var EXPORTED_SYMBOLS = ["BrowserElementPromptService"];
ChromeUtils.import("resource://gre/modules/XPCOMUtils.jsm");
ChromeUtils.import("resource://gre/modules/Services.jsm");
const NS_PREFBRANCH_PREFCHANGE_TOPIC_ID = "nsPref:changed";
const BROWSER_FRAMES_ENABLED_PREF = "dom.mozBrowserFramesEnabled";
function debug(msg) {
//dump("BrowserElementPromptService - " + msg + "\n");
}
function BrowserElementPrompt(win, browserElementChild) {
this._win = win;
this._browserElementChild = browserElementChild;
}
BrowserElementPrompt.prototype = {
QueryInterface: XPCOMUtils.generateQI([Ci.nsIPrompt]),
alert: function(title, text) {
this._browserElementChild.showModalPrompt(
this._win, {promptType: "alert", title: title, message: text, returnValue: undefined});
},
alertCheck: function(title, text, checkMsg, checkState) {
// Treat this like a normal alert() call, ignoring the checkState. The
// front-end can do its own suppression of the alert() if it wants.
this.alert(title, text);
},
confirm: function(title, text) {
return this._browserElementChild.showModalPrompt(
this._win, {promptType: "confirm", title: title, message: text, returnValue: undefined});
},
confirmCheck: function(title, text, checkMsg, checkState) {
return this.confirm(title, text);
},
// Each button is described by an object with the following schema
// {
// string messageType, // 'builtin' or 'custom'
// string message, // 'ok', 'cancel', 'yes', 'no', 'save', 'dontsave',
// // 'revert' or a string from caller if messageType was 'custom'.
// }
//
// Expected result from embedder:
// {
// int button, // Index of the button that user pressed.
// boolean checked, // True if the check box is checked.
// }
confirmEx: function(title, text, buttonFlags, button0Title, button1Title,
button2Title, checkMsg, checkState) {
let buttonProperties = this._buildConfirmExButtonProperties(buttonFlags,
button0Title,
button1Title,
button2Title);
let defaultReturnValue = { selectedButton: buttonProperties.defaultButton };
if (checkMsg) {
defaultReturnValue.checked = checkState.value;
}
let ret = this._browserElementChild.showModalPrompt(
this._win,
{
promptType: "custom-prompt",
title: title,
message: text,
defaultButton: buttonProperties.defaultButton,
buttons: buttonProperties.buttons,
showCheckbox: !!checkMsg,
checkboxMessage: checkMsg,
checkboxCheckedByDefault: !!checkState.value,
returnValue: defaultReturnValue
}
);
if (checkMsg) {
checkState.value = ret.checked;
}
return buttonProperties.indexToButtonNumberMap[ret.selectedButton];
},
prompt: function(title, text, value, checkMsg, checkState) {
let rv = this._browserElementChild.showModalPrompt(
this._win,
{ promptType: "prompt",
title: title,
message: text,
initialValue: value.value,
returnValue: null });
value.value = rv;
// nsIPrompt::Prompt returns true if the user pressed "OK" at the prompt,
// and false if the user pressed "Cancel".
//
// BrowserElementChild returns null for "Cancel" and returns the string the
// user entered otherwise.
return rv !== null;
},
promptUsernameAndPassword: function(title, text, username, password, checkMsg, checkState) {
throw Cr.NS_ERROR_NOT_IMPLEMENTED;
},
promptPassword: function(title, text, password, checkMsg, checkState) {
throw Cr.NS_ERROR_NOT_IMPLEMENTED;
},
select: function(title, text, aCount, aSelectList, aOutSelection) {
throw Cr.NS_ERROR_NOT_IMPLEMENTED;
},
_buildConfirmExButtonProperties: function(buttonFlags, button0Title,
button1Title, button2Title) {
let r = {
defaultButton: -1,
buttons: [],
// This map is for translating array index to the button number that
// is recognized by Gecko. This shouldn't be exposed to embedder.
indexToButtonNumberMap: []
};
let defaultButton = 0; // Default to Button 0.
if (buttonFlags & Ci.nsIPrompt.BUTTON_POS_1_DEFAULT) {
defaultButton = 1;
} else if (buttonFlags & Ci.nsIPrompt.BUTTON_POS_2_DEFAULT) {
defaultButton = 2;
}
// Properties of each button.
let buttonPositions = [
Ci.nsIPrompt.BUTTON_POS_0,
Ci.nsIPrompt.BUTTON_POS_1,
Ci.nsIPrompt.BUTTON_POS_2
];
function buildButton(buttonTitle, buttonNumber) {
let ret = {};
let buttonPosition = buttonPositions[buttonNumber];
let mask = 0xff * buttonPosition; // 8 bit mask
let titleType = (buttonFlags & mask) / buttonPosition;
ret.messageType = 'builtin';
switch(titleType) {
case Ci.nsIPrompt.BUTTON_TITLE_OK:
ret.message = 'ok';
break;
case Ci.nsIPrompt.BUTTON_TITLE_CANCEL:
ret.message = 'cancel';
break;
case Ci.nsIPrompt.BUTTON_TITLE_YES:
ret.message = 'yes';
break;
case Ci.nsIPrompt.BUTTON_TITLE_NO:
ret.message = 'no';
break;
case Ci.nsIPrompt.BUTTON_TITLE_SAVE:
ret.message = 'save';
break;
case Ci.nsIPrompt.BUTTON_TITLE_DONT_SAVE:
ret.message = 'dontsave';
break;
case Ci.nsIPrompt.BUTTON_TITLE_REVERT:
ret.message = 'revert';
break;
case Ci.nsIPrompt.BUTTON_TITLE_IS_STRING:
ret.message = buttonTitle;
ret.messageType = 'custom';
break;
default:
// This button is not shown.
return;
}
// If this is the default button, set r.defaultButton to
// the index of this button in the array. This value is going to be
// exposed to the embedder.
if (defaultButton === buttonNumber) {
r.defaultButton = r.buttons.length;
}
r.buttons.push(ret);
r.indexToButtonNumberMap.push(buttonNumber);
}
buildButton(button0Title, 0);
buildButton(button1Title, 1);
buildButton(button2Title, 2);
// If defaultButton is still -1 here, it means the default button won't
// be shown.
if (r.defaultButton === -1) {
throw new Components.Exception("Default button won't be shown",
Cr.NS_ERROR_FAILURE);
}
return r;
},
};
function BrowserElementAuthPrompt() {
}
BrowserElementAuthPrompt.prototype = {
QueryInterface: XPCOMUtils.generateQI([Ci.nsIAuthPrompt2]),
promptAuth: function promptAuth(channel, level, authInfo) {
throw Cr.NS_ERROR_NOT_IMPLEMENTED;
},
asyncPromptAuth: function asyncPromptAuth(channel, callback, context, level, authInfo) {
debug("asyncPromptAuth");
// The cases that we don't support now.
if ((authInfo.flags & Ci.nsIAuthInformation.AUTH_PROXY) &&
(authInfo.flags & Ci.nsIAuthInformation.ONLY_PASSWORD)) {
throw Cr.NS_ERROR_FAILURE;
}
let frame = this._getFrameFromChannel(channel);
if (!frame) {
debug("Cannot get frame, asyncPromptAuth fail");
throw Cr.NS_ERROR_FAILURE;
}
let browserElementParent =
BrowserElementPromptService.getBrowserElementParentForFrame(frame);
if (!browserElementParent) {
debug("Failed to load browser element parent.");
throw Cr.NS_ERROR_FAILURE;
}
let consumer = {
QueryInterface: XPCOMUtils.generateQI([Ci.nsICancelable]),
callback: callback,
context: context,
cancel: function() {
this.callback.onAuthCancelled(this.context, false);
this.callback = null;
this.context = null;
}
};
let [hostname, httpRealm] = this._getAuthTarget(channel, authInfo);
let hashKey = level + "|" + hostname + "|" + httpRealm;
let asyncPrompt = this._asyncPrompts[hashKey];
if (asyncPrompt) {
asyncPrompt.consumers.push(consumer);
return consumer;
}
asyncPrompt = {
consumers: [consumer],
channel: channel,
authInfo: authInfo,
level: level,
inProgress: false,
browserElementParent: browserElementParent
};
this._asyncPrompts[hashKey] = asyncPrompt;
this._doAsyncPrompt();
return consumer;
},
// Utilities for nsIAuthPrompt2 ----------------
_asyncPrompts: {},
_asyncPromptInProgress: new WeakMap(),
_doAsyncPrompt: function() {
// Find the key of a prompt whose browser element parent does not have
// async prompt in progress.
let hashKey = null;
for (let key in this._asyncPrompts) {
let prompt = this._asyncPrompts[key];
if (!this._asyncPromptInProgress.get(prompt.browserElementParent)) {
hashKey = key;
break;
}
}
// Didn't find an available prompt, so just return.
if (!hashKey)
return;
let prompt = this._asyncPrompts[hashKey];
let [hostname, httpRealm] = this._getAuthTarget(prompt.channel,
prompt.authInfo);
this._asyncPromptInProgress.set(prompt.browserElementParent, true);
prompt.inProgress = true;
let self = this;
let callback = function(ok, username, password) {
debug("Async auth callback is called, ok = " +
ok + ", username = " + username);
// Here we got the username and password provided by embedder, or
// ok = false if the prompt was cancelled by embedder.
delete self._asyncPrompts[hashKey];
prompt.inProgress = false;
self._asyncPromptInProgress.delete(prompt.browserElementParent);
// Fill authentication information with username and password provided
// by user.
let flags = prompt.authInfo.flags;
if (username) {
if (flags & Ci.nsIAuthInformation.NEED_DOMAIN) {
// Domain is separated from username by a backslash
let idx = username.indexOf("\\");
if (idx == -1) {
prompt.authInfo.username = username;
} else {
prompt.authInfo.domain = username.substring(0, idx);
prompt.authInfo.username = username.substring(idx + 1);
}
} else {
prompt.authInfo.username = username;
}
}
if (password) {
prompt.authInfo.password = password;
}
for (let consumer of prompt.consumers) {
if (!consumer.callback) {
// Not having a callback means that consumer didn't provide it
// or canceled the notification.
continue;
}
try {
if (ok) {
debug("Ok, calling onAuthAvailable to finish auth");
consumer.callback.onAuthAvailable(consumer.context, prompt.authInfo);
} else {
debug("Cancelled, calling onAuthCancelled to finish auth.");
consumer.callback.onAuthCancelled(consumer.context, true);
}
} catch (e) { /* Throw away exceptions caused by callback */ }
}
// Process the next prompt, if one is pending.
self._doAsyncPrompt();
};
let runnable = {
run: function() {
// Call promptAuth of browserElementParent, to show the prompt.
prompt.browserElementParent.promptAuth(
self._createAuthDetail(prompt.channel, prompt.authInfo),
callback);
}
}
Services.tm.dispatchToMainThread(runnable);
},
_getFrameFromChannel: function(channel) {
let loadContext = channel.notificationCallbacks.getInterface(Ci.nsILoadContext);
return loadContext.topFrameElement;
},
_createAuthDetail: function(channel, authInfo) {
let [hostname, httpRealm] = this._getAuthTarget(channel, authInfo);
return {
host: hostname,
path: channel.URI.pathQueryRef,
realm: httpRealm,
username: authInfo.username,
isProxy: !!(authInfo.flags & Ci.nsIAuthInformation.AUTH_PROXY),
isOnlyPassword: !!(authInfo.flags & Ci.nsIAuthInformation.ONLY_PASSWORD)
};
},
// The code is taken from nsLoginManagerPrompter.js, with slight
// modification for parameter name consistency here.
_getAuthTarget : function (channel, authInfo) {
let hostname, realm;
// If our proxy is demanding authentication, don't use the
// channel's actual destination.
if (authInfo.flags & Ci.nsIAuthInformation.AUTH_PROXY) {
if (!(channel instanceof Ci.nsIProxiedChannel))
throw new Error("proxy auth needs nsIProxiedChannel");
let info = channel.proxyInfo;
if (!info)
throw new Error("proxy auth needs nsIProxyInfo");
// Proxies don't have a scheme, but we'll use "moz-proxy://"
// so that it's more obvious what the login is for.
var idnService = Cc["@mozilla.org/network/idn-service;1"].
getService(Ci.nsIIDNService);
hostname = "moz-proxy://" +
idnService.convertUTF8toACE(info.host) +
":" + info.port;
realm = authInfo.realm;
if (!realm)
realm = hostname;
return [hostname, realm];
}
hostname = this._getFormattedHostname(channel.URI);
// If a HTTP WWW-Authenticate header specified a realm, that value
// will be available here. If it wasn't set or wasn't HTTP, we'll use
// the formatted hostname instead.
realm = authInfo.realm;
if (!realm)
realm = hostname;
return [hostname, realm];
},
/**
* Strip out things like userPass and path for display.
*/
_getFormattedHostname : function(uri) {
return uri.scheme + "://" + uri.hostPort;
},
};
function AuthPromptWrapper(oldImpl, browserElementImpl) {
this._oldImpl = oldImpl;
this._browserElementImpl = browserElementImpl;
}
AuthPromptWrapper.prototype = {
QueryInterface: XPCOMUtils.generateQI([Ci.nsIAuthPrompt2]),
promptAuth: function(channel, level, authInfo) {
if (this._canGetParentElement(channel)) {
return this._browserElementImpl.promptAuth(channel, level, authInfo);
} else {
return this._oldImpl.promptAuth(channel, level, authInfo);
}
},
asyncPromptAuth: function(channel, callback, context, level, authInfo) {
if (this._canGetParentElement(channel)) {
return this._browserElementImpl.asyncPromptAuth(channel, callback, context, level, authInfo);
} else {
return this._oldImpl.asyncPromptAuth(channel, callback, context, level, authInfo);
}
},
_canGetParentElement: function(channel) {
try {
let context = channel.notificationCallbacks.getInterface(Ci.nsILoadContext);
let frame = context.topFrameElement;
if (!frame) {
// This function returns a boolean value
return !!context.nestedFrameId;
}
if (!BrowserElementPromptService.getBrowserElementParentForFrame(frame))
return false;
return true;
} catch (e) {
return false;
}
}
};
function BrowserElementPromptFactory(toWrap) {
this._wrapped = toWrap;
}
BrowserElementPromptFactory.prototype = {
classID: Components.ID("{24f3d0cf-e417-4b85-9017-c9ecf8bb1299}"),
QueryInterface: XPCOMUtils.generateQI([Ci.nsIPromptFactory]),
_mayUseNativePrompt: function() {
try {
return Services.prefs.getBoolPref("browser.prompt.allowNative");
} catch (e) {
// This properity is default to true.
return true;
}
},
_getNativePromptIfAllowed: function(win, iid, err) {
if (this._mayUseNativePrompt())
return this._wrapped.getPrompt(win, iid);
else {
// Not allowed, throw an exception.
throw err;
}
},
getPrompt: function(win, iid) {
// It is possible for some object to get a prompt without passing
// valid reference of window, like nsNSSComponent. In such case, we
// should just fall back to the native prompt service
if (!win)
return this._getNativePromptIfAllowed(win, iid, Cr.NS_ERROR_INVALID_ARG);
if (iid.number != Ci.nsIPrompt.number &&
iid.number != Ci.nsIAuthPrompt2.number) {
debug("We don't recognize the requested IID (" + iid + ", " +
"allowed IID: " +
"nsIPrompt=" + Ci.nsIPrompt + ", " +
"nsIAuthPrompt2=" + Ci.nsIAuthPrompt2 + ")");
return this._getNativePromptIfAllowed(win, iid, Cr.NS_ERROR_INVALID_ARG);
}
// Try to find a BrowserElementChild for the window.
let browserElementChild =
BrowserElementPromptService.getBrowserElementChildForWindow(win);
if (iid.number === Ci.nsIAuthPrompt2.number) {
debug("Caller requests an instance of nsIAuthPrompt2.");
if (browserElementChild) {
// If we are able to get a BrowserElementChild, it means that
// the auth prompt is for a mozbrowser. Therefore we don't need to
// fall back.
return new BrowserElementAuthPrompt().QueryInterface(iid);
}
// Because nsIAuthPrompt2 is called in parent process. If caller
// wants nsIAuthPrompt2 and we cannot get BrowserElementchild,
// it doesn't mean that we should fallback. It is possible that we can
// get the BrowserElementParent from nsIChannel that passed to
// functions of nsIAuthPrompt2.
if (this._mayUseNativePrompt()) {
return new AuthPromptWrapper(
this._wrapped.getPrompt(win, iid),
new BrowserElementAuthPrompt().QueryInterface(iid))
.QueryInterface(iid);
} else {
// Falling back is not allowed, so we don't need wrap the
// BrowserElementPrompt.
return new BrowserElementAuthPrompt().QueryInterface(iid);
}
}
if (!browserElementChild) {
debug("We can't find a browserElementChild for " +
win + ", " + win.location);
return this._getNativePromptIfAllowed(win, iid, Cr.NS_ERROR_FAILURE);
}
debug("Returning wrapped getPrompt for " + win);
return new BrowserElementPrompt(win, browserElementChild)
.QueryInterface(iid);
}
};
var BrowserElementPromptService = {
QueryInterface: XPCOMUtils.generateQI([Ci.nsIObserver,
Ci.nsISupportsWeakReference]),
_initialized: false,
_init: function() {
if (this._initialized) {
return;
}
// If the pref is disabled, do nothing except wait for the pref to change.
if (!this._browserFramesPrefEnabled()) {
var prefs = Cc["@mozilla.org/preferences-service;1"].getService(Ci.nsIPrefBranch);
prefs.addObserver(BROWSER_FRAMES_ENABLED_PREF, this, /* ownsWeak = */ true);
return;
}
this._initialized = true;
this._browserElementParentMap = new WeakMap();
var os = Cc["@mozilla.org/observer-service;1"].getService(Ci.nsIObserverService);
os.addObserver(this, "outer-window-destroyed", /* ownsWeak = */ true);
// Wrap the existing @mozilla.org/prompter;1 implementation.
var contractID = "@mozilla.org/prompter;1";
var oldCID = Cm.contractIDToCID(contractID);
var newCID = BrowserElementPromptFactory.prototype.classID;
var oldFactory = Cm.getClassObject(Cc[contractID], Ci.nsIFactory);
if (oldCID == newCID) {
debug("WARNING: Wrapped prompt factory is already installed!");
return;
}
Cm.unregisterFactory(oldCID, oldFactory);
var oldInstance = oldFactory.createInstance(null, Ci.nsIPromptFactory);
var newInstance = new BrowserElementPromptFactory(oldInstance);
var newFactory = {
createInstance: function(outer, iid) {
if (outer != null) {
throw Cr.NS_ERROR_NO_AGGREGATION;
}
return newInstance.QueryInterface(iid);
}
};
Cm.registerFactory(newCID,
"BrowserElementPromptService's prompter;1 wrapper",
contractID, newFactory);
debug("Done installing new prompt factory.");
},
_getOuterWindowID: function(win) {
return win.QueryInterface(Ci.nsIInterfaceRequestor)
.getInterface(Ci.nsIDOMWindowUtils)
.outerWindowID;
},
_browserElementChildMap: {},
mapWindowToBrowserElementChild: function(win, browserElementChild) {
this._browserElementChildMap[this._getOuterWindowID(win)] = browserElementChild;
},
unmapWindowToBrowserElementChild: function(win) {
delete this._browserElementChildMap[this._getOuterWindowID(win)];
},
getBrowserElementChildForWindow: function(win) {
// We only have a mapping for <iframe mozbrowser>s, not their inner
// <iframes>, so we look up win.top below. window.top (when called from
// script) respects <iframe mozbrowser> boundaries.
return this._browserElementChildMap[this._getOuterWindowID(win.top)];
},
mapFrameToBrowserElementParent: function(frame, browserElementParent) {
this._browserElementParentMap.set(frame, browserElementParent);
},
getBrowserElementParentForFrame: function(frame) {
return this._browserElementParentMap.get(frame);
},
_observeOuterWindowDestroyed: function(outerWindowID) {
let id = outerWindowID.QueryInterface(Ci.nsISupportsPRUint64).data;
debug("observeOuterWindowDestroyed " + id);
delete this._browserElementChildMap[outerWindowID.data];
},
_browserFramesPrefEnabled: function() {
var prefs = Cc["@mozilla.org/preferences-service;1"].getService(Ci.nsIPrefBranch);
try {
return prefs.getBoolPref(BROWSER_FRAMES_ENABLED_PREF);
}
catch(e) {
return false;
}
},
observe: function(subject, topic, data) {
switch(topic) {
case NS_PREFBRANCH_PREFCHANGE_TOPIC_ID:
if (data == BROWSER_FRAMES_ENABLED_PREF) {
this._init();
}
break;
case "outer-window-destroyed":
this._observeOuterWindowDestroyed(subject);
break;
default:
debug("Observed unexpected topic " + topic);
}
}
};
BrowserElementPromptService._init();