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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";
const {
LongStringActor,
} = require("resource://devtools/server/actors/string.js");
const {
TYPES: { WEBSOCKET },
} = require("resource://devtools/server/actors/resources/index.js");
const webSocketEventService = Cc[
"@mozilla.org/websocketevent/service;1"
].getService(Ci.nsIWebSocketEventService);
class WebSocketWatcher {
constructor() {
this.windowIds = new Set();
// Maintains a map of all the connection channels per websocket
// The map item is keyed on the `webSocketSerialID` and stores
// the `httpChannelId` as value.
this.connections = new Map();
this.onWindowReady = this.onWindowReady.bind(this);
this.onWindowDestroy = this.onWindowDestroy.bind(this);
}
static createResource(wsMessageType, eventParams) {
return {
resourceType: WEBSOCKET,
wsMessageType,
...eventParams,
};
}
static prepareFramePayload(targetActor, frame) {
const payload = new LongStringActor(targetActor.conn, frame.payload);
targetActor.manage(payload);
return payload.form();
}
watch(targetActor, { onAvailable }) {
this.targetActor = targetActor;
this.onAvailable = onAvailable;
for (const window of this.targetActor.windows) {
const { innerWindowId } = window.windowGlobalChild;
this.startListening(innerWindowId);
}
// On navigate/reload we should re-start listening with the
// new `innerWindowID`
this.targetActor.on("window-ready", this.onWindowReady);
this.targetActor.on("window-destroyed", this.onWindowDestroy);
}
onWindowReady({ window }) {
if (!this.targetActor.followWindowGlobalLifeCycle) {
const { innerWindowId } = window.windowGlobalChild;
this.startListening(innerWindowId);
}
}
onWindowDestroy({ id }) {
this.stopListening(id);
}
startListening(innerWindowId) {
if (!this.windowIds.has(innerWindowId)) {
this.windowIds.add(innerWindowId);
webSocketEventService.addListener(innerWindowId, this);
}
}
stopListening(innerWindowId) {
if (this.windowIds.has(innerWindowId)) {
this.windowIds.delete(innerWindowId);
if (!webSocketEventService.hasListenerFor(innerWindowId)) {
// The listener might have already been cleaned up on `window-destroy`.
console.warn(
"Already stopped listening to websocket events for this window."
);
return;
}
webSocketEventService.removeListener(innerWindowId, this);
}
}
destroy() {
for (const id of this.windowIds) {
this.stopListening(id);
}
this.targetActor.off("window-ready", this.onWindowReady);
this.targetActor.off("window-destroyed", this.onWindowDestroy);
}
// methods for the nsIWebSocketEventService
webSocketCreated() {}
webSocketOpened(
webSocketSerialID,
effectiveURI,
protocols,
extensions,
httpChannelId
) {
this.connections.set(webSocketSerialID, httpChannelId);
const resource = WebSocketWatcher.createResource("webSocketOpened", {
httpChannelId,
effectiveURI,
protocols,
extensions,
});
this.onAvailable([resource]);
}
webSocketMessageAvailable() {}
webSocketClosed(webSocketSerialID, wasClean, code, reason) {
const httpChannelId = this.connections.get(webSocketSerialID);
this.connections.delete(webSocketSerialID);
const resource = WebSocketWatcher.createResource("webSocketClosed", {
httpChannelId,
wasClean,
code,
reason,
});
this.onAvailable([resource]);
}
frameReceived(webSocketSerialID, frame) {
const httpChannelId = this.connections.get(webSocketSerialID);
if (!httpChannelId) {
return;
}
const payload = WebSocketWatcher.prepareFramePayload(
this.targetActor,
frame
);
const resource = WebSocketWatcher.createResource("frameReceived", {
httpChannelId,
data: {
type: "received",
payload,
timeStamp: frame.timeStamp,
finBit: frame.finBit,
rsvBit1: frame.rsvBit1,
rsvBit2: frame.rsvBit2,
rsvBit3: frame.rsvBit3,
opCode: frame.opCode,
mask: frame.mask,
maskBit: frame.maskBit,
},
});
this.onAvailable([resource]);
}
frameSent(webSocketSerialID, frame) {
const httpChannelId = this.connections.get(webSocketSerialID);
if (!httpChannelId) {
return;
}
const payload = WebSocketWatcher.prepareFramePayload(
this.targetActor,
frame
);
const resource = WebSocketWatcher.createResource("frameSent", {
httpChannelId,
data: {
type: "sent",
payload,
timeStamp: frame.timeStamp,
finBit: frame.finBit,
rsvBit1: frame.rsvBit1,
rsvBit2: frame.rsvBit2,
rsvBit3: frame.rsvBit3,
opCode: frame.opCode,
mask: frame.mask,
maskBit: frame.maskBit,
},
});
this.onAvailable([resource]);
}
}
module.exports = WebSocketWatcher;
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