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/* 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";
this.EXPORTED_SYMBOLS = ["E10SUtils"];
const {interfaces: Ci, utils: Cu, classes: Cc} = Components;
Cu.import("resource://gre/modules/Services.jsm");
Cu.import("resource://gre/modules/XPCOMUtils.jsm");
XPCOMUtils.defineLazyPreferenceGetter(this, "useRemoteWebExtensions",
"extensions.webextensions.remote", false);
XPCOMUtils.defineLazyModuleGetter(this, "Utils",
"resource://gre/modules/sessionstore/Utils.jsm");
function getAboutModule(aURL) {
// Needs to match NS_GetAboutModuleName
let moduleName = aURL.path.replace(/[#?].*/, "").toLowerCase();
let contract = "@mozilla.org/network/protocol/about;1?what=" + moduleName;
try {
return Cc[contract].getService(Ci.nsIAboutModule);
} catch (e) {
// Either the about module isn't defined or it is broken. In either case
// ignore it.
return null;
}
}
const NOT_REMOTE = null;
// These must match any similar ones in ContentParent.h.
const WEB_REMOTE_TYPE = "web";
const FILE_REMOTE_TYPE = "file";
const EXTENSION_REMOTE_TYPE = "extension";
const DEFAULT_REMOTE_TYPE = WEB_REMOTE_TYPE;
function validatedWebRemoteType(aPreferredRemoteType) {
return aPreferredRemoteType && aPreferredRemoteType.startsWith(WEB_REMOTE_TYPE)
? aPreferredRemoteType : WEB_REMOTE_TYPE;
}
this.E10SUtils = {
DEFAULT_REMOTE_TYPE,
NOT_REMOTE,
WEB_REMOTE_TYPE,
FILE_REMOTE_TYPE,
EXTENSION_REMOTE_TYPE,
canLoadURIInProcess(aURL, aProcess) {
let remoteType = aProcess == Ci.nsIXULRuntime.PROCESS_TYPE_CONTENT
? DEFAULT_REMOTE_TYPE : NOT_REMOTE;
return remoteType == this.getRemoteTypeForURI(aURL, true, remoteType);
},
getRemoteTypeForURI(aURL, aMultiProcess,
aPreferredRemoteType = DEFAULT_REMOTE_TYPE) {
if (!aMultiProcess) {
return NOT_REMOTE;
}
// loadURI in browser.xml treats null as about:blank
if (!aURL) {
aURL = "about:blank";
}
// Javascript urls can load in any process, they apply to the current document
if (aURL.startsWith("javascript:")) {
return aPreferredRemoteType;
}
// We need data: URIs to load in any remote process, because some of our
// tests rely on this.
if (aURL.startsWith("data:")) {
return aPreferredRemoteType == NOT_REMOTE ? DEFAULT_REMOTE_TYPE
: aPreferredRemoteType;
}
if (aURL.startsWith("file:")) {
return Services.prefs.getBoolPref("browser.tabs.remote.separateFileUriProcess")
? FILE_REMOTE_TYPE : DEFAULT_REMOTE_TYPE;
}
if (aURL.startsWith("about:")) {
// We need to special case about:blank because it needs to load in any.
if (aURL == "about:blank") {
return aPreferredRemoteType;
}
let url = Services.io.newURI(aURL);
let module = getAboutModule(url);
// If the module doesn't exist then an error page will be loading, that
// should be ok to load in any process
if (!module) {
return aPreferredRemoteType;
}
let flags = module.getURIFlags(url);
if (flags & Ci.nsIAboutModule.URI_MUST_LOAD_IN_CHILD) {
return DEFAULT_REMOTE_TYPE;
}
if (flags & Ci.nsIAboutModule.URI_CAN_LOAD_IN_CHILD &&
aPreferredRemoteType != NOT_REMOTE) {
return DEFAULT_REMOTE_TYPE;
}
return NOT_REMOTE;
}
if (aURL.startsWith("chrome:")) {
let url;
try {
// This can fail for invalid Chrome URIs, in which case we will end up
// not loading anything anyway.
url = Services.io.newURI(aURL);
} catch (ex) {
return aPreferredRemoteType;
}
let chromeReg = Cc["@mozilla.org/chrome/chrome-registry;1"].
getService(Ci.nsIXULChromeRegistry);
if (chromeReg.mustLoadURLRemotely(url)) {
return DEFAULT_REMOTE_TYPE;
}
if (chromeReg.canLoadURLRemotely(url) &&
aPreferredRemoteType != NOT_REMOTE) {
return DEFAULT_REMOTE_TYPE;
}
return NOT_REMOTE;
}
if (aURL.startsWith("moz-extension:")) {
return useRemoteWebExtensions ? EXTENSION_REMOTE_TYPE : NOT_REMOTE;
}
if (aURL.startsWith("view-source:")) {
return this.getRemoteTypeForURI(aURL.substr("view-source:".length),
aMultiProcess, aPreferredRemoteType);
}
return validatedWebRemoteType(aPreferredRemoteType);
},
shouldLoadURIInThisProcess(aURI) {
let remoteType = Services.appinfo.remoteType;
return remoteType == this.getRemoteTypeForURI(aURI.spec, true, remoteType);
},
shouldLoadURI(aDocShell, aURI, aReferrer, aHasPostData) {
// Inner frames should always load in the current process
if (aDocShell.QueryInterface(Ci.nsIDocShellTreeItem).sameTypeParent)
return true;
// If we are in a Large-Allocation process, and it wouldn't be content visible
// to change processes, we want to load into a new process so that we can throw
// this one out. We don't want to move into a new process if we have post data,
// because we would accidentally throw out that data.
if (!aHasPostData &&
aDocShell.inLargeAllocProcess &&
!aDocShell.awaitingLargeAlloc &&
aDocShell.isOnlyToplevelInTabGroup) {
return false;
}
// If the URI can be loaded in the current process then continue
return this.shouldLoadURIInThisProcess(aURI);
},
redirectLoad(aDocShell, aURI, aReferrer, aTriggeringPrincipal, aFreshProcess, aFlags) {
// Retarget the load to the correct process
let messageManager = aDocShell.QueryInterface(Ci.nsIInterfaceRequestor)
.getInterface(Ci.nsIContentFrameMessageManager);
let sessionHistory = aDocShell.getInterface(Ci.nsIWebNavigation).sessionHistory;
messageManager.sendAsyncMessage("Browser:LoadURI", {
loadOptions: {
uri: aURI.spec,
flags: aFlags || Ci.nsIWebNavigation.LOAD_FLAGS_NONE,
referrer: aReferrer ? aReferrer.spec : null,
triggeringPrincipal: aTriggeringPrincipal
? Utils.serializePrincipal(aTriggeringPrincipal)
: null,
reloadInFreshProcess: !!aFreshProcess,
},
historyIndex: sessionHistory.requestedIndex,
});
return false;
},
wrapHandlingUserInput(aWindow, aIsHandling, aCallback) {
var handlingUserInput;
try {
handlingUserInput = aWindow.QueryInterface(Ci.nsIInterfaceRequestor)
.getInterface(Ci.nsIDOMWindowUtils)
.setHandlingUserInput(aIsHandling);
aCallback();
} finally {
handlingUserInput.destruct();
}
},
};
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