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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";
ChromeUtils.defineModuleGetter(
this,
"WebRequest",
"resource://gre/modules/WebRequest.jsm"
);
var { parseMatchPatterns } = ExtensionUtils;
// The guts of a WebRequest event handler. Takes care of converting
// |details| parameter when invoking listeners.
function registerEvent(
extension,
eventName,
fire,
filter,
info,
remoteTab = null
) {
let listener = async data => {
let event = data.serialize(eventName);
if (data.registerTraceableChannel) {
// If this is a primed listener, no tabParent was passed in here,
// but the convert() callback later in this function will be called
// when the background page is started. Force that to happen here
// after which we'll have a valid tabParent.
if (fire.wakeup) {
await fire.wakeup();
}
data.registerTraceableChannel(extension.policy, remoteTab);
}
return fire.sync(event);
};
let filter2 = {};
if (filter.urls) {
let perms = new MatchPatternSet([
...extension.allowedOrigins.patterns,
...extension.optionalOrigins.patterns,
]);
filter2.urls = parseMatchPatterns(filter.urls);
if (!perms.overlapsAll(filter2.urls)) {
Cu.reportError(
"The webRequest.addListener filter doesn't overlap with host permissions."
);
}
}
if (filter.types) {
filter2.types = filter.types;
}
if (filter.tabId !== undefined) {
filter2.tabId = filter.tabId;
}
if (filter.windowId !== undefined) {
filter2.windowId = filter.windowId;
}
if (filter.incognito !== undefined) {
filter2.incognito = filter.incognito;
}
let blockingAllowed = extension.hasPermission("webRequestBlocking");
let info2 = [];
if (info) {
for (let desc of info) {
if (desc == "blocking" && !blockingAllowed) {
// This is usually checked in the child process (based on the API schemas, where these options
// should be checked with the "webRequestBlockingPermissionRequired" postprocess property),
// but it is worth to also check it here just in case a new webRequest has been added and
// it has not yet using the expected postprocess property).
Cu.reportError(
"Using webRequest.addListener with the blocking option " +
"requires the 'webRequestBlocking' permission."
);
} else {
info2.push(desc);
}
}
}
let listenerDetails = {
addonId: extension.id,
policy: extension.policy,
blockingAllowed,
};
WebRequest[eventName].addListener(listener, filter2, info2, listenerDetails);
return {
unregister: () => {
WebRequest[eventName].removeListener(listener);
},
convert(_fire, context) {
fire = _fire;
remoteTab = context.xulBrowser.frameLoader.remoteTab;
},
};
}
function makeWebRequestEvent(context, name) {
return new EventManager({
context,
name: `webRequest.${name}`,
persistent: {
module: "webRequest",
event: name,
},
register: (fire, filter, info) => {
return registerEvent(
context.extension,
name,
fire,
filter,
info,
context.xulBrowser.frameLoader.remoteTab
).unregister;
},
}).api();
}
this.webRequest = class extends ExtensionAPI {
primeListener(extension, event, fire, params) {
return registerEvent(extension, event, fire, ...params);
}
getAPI(context) {
return {
webRequest: {
onBeforeRequest: makeWebRequestEvent(context, "onBeforeRequest"),
onBeforeSendHeaders: makeWebRequestEvent(
context,
"onBeforeSendHeaders"
),
onSendHeaders: makeWebRequestEvent(context, "onSendHeaders"),
onHeadersReceived: makeWebRequestEvent(context, "onHeadersReceived"),
onAuthRequired: makeWebRequestEvent(context, "onAuthRequired"),
onBeforeRedirect: makeWebRequestEvent(context, "onBeforeRedirect"),
onResponseStarted: makeWebRequestEvent(context, "onResponseStarted"),
onErrorOccurred: makeWebRequestEvent(context, "onErrorOccurred"),
onCompleted: makeWebRequestEvent(context, "onCompleted"),
getSecurityInfo: function(requestId, options = {}) {
return WebRequest.getSecurityInfo({
id: requestId,
policy: context.extension.policy,
remoteTab: context.xulBrowser.frameLoader.remoteTab,
options,
});
},
handlerBehaviorChanged: function() {
// TODO: Flush all caches.
},
},
};
}
};
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