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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 Services = require("Services");
const { DevToolsServer } = require("devtools/server/devtools-server");
const { Cc, Ci } = require("chrome");
const { ActorClassWithSpec, Actor } = require("devtools/shared/protocol");
const {
processDescriptorSpec,
} = require("devtools/shared/specs/descriptors/process");
loader.lazyRequireGetter(
this,
"ContentProcessTargetActor",
"devtools/server/actors/targets/content-process",
true
);
loader.lazyRequireGetter(
this,
"ParentProcessTargetActor",
"devtools/server/actors/targets/parent-process",
true
);
loader.lazyRequireGetter(
this,
"connectToContentProcess",
"devtools/server/connectors/content-process-connector",
true
);
loader.lazyRequireGetter(
this,
"WatcherActor",
"devtools/server/actors/watcher",
true
);
const ProcessDescriptorActor = ActorClassWithSpec(processDescriptorSpec, {
initialize(connection, options = {}) {
if ("id" in options && typeof options.id != "number") {
throw Error("process connect requires a valid `id` attribute.");
}
Actor.prototype.initialize.call(this, connection);
this.id = options.id;
this._browsingContextTargetActor = null;
this.isParent = options.parent;
this.destroy = this.destroy.bind(this);
},
get browsingContextID() {
if (this._browsingContextTargetActor) {
return this._browsingContextTargetActor.docShell.browsingContext.id;
}
return null;
},
_parentProcessConnect() {
const env = Cc["@mozilla.org/process/environment;1"].getService(
Ci.nsIEnvironment
);
const isXpcshell = env.exists("XPCSHELL_TEST_PROFILE_DIR");
let targetActor;
if (isXpcshell) {
// Check if we are running on xpcshell.
// When running on xpcshell, there is no valid browsing context to attach to
// and so ParentProcessTargetActor doesn't make sense as it inherits from
// BrowsingContextTargetActor. So instead use ContentProcessTargetActor, which
// matches xpcshell needs.
targetActor = new ContentProcessTargetActor(this.conn);
} else {
// Create the target actor for the parent process, which is in the same process
// as this target. Because we are in the same process, we have a true actor that
// should be managed by the ProcessDescriptorActor.
targetActor = new ParentProcessTargetActor(this.conn);
// this is a special field that only parent process with a browsing context
// have, as they are the only processes at the moment that have child
// browsing contexts
this._browsingContextTargetActor = targetActor;
}
this.manage(targetActor);
// to be consistent with the return value of the _childProcessConnect, we are returning
// the form here. This might be memoized in the future
return targetActor.form();
},
/**
* Connect to a remote process actor, always a ContentProcess target.
*/
async _childProcessConnect() {
const { id } = this;
const mm = this._lookupMessageManager(id);
if (!mm) {
return {
error: "noProcess",
message: "There is no process with id '" + id + "'.",
};
}
const childTargetForm = await connectToContentProcess(
this.conn,
mm,
this.destroy
);
return childTargetForm;
},
_lookupMessageManager(id) {
for (let i = 0; i < Services.ppmm.childCount; i++) {
const mm = Services.ppmm.getChildAt(i);
// A zero id is used for the parent process, instead of its actual pid.
if (id ? mm.osPid == id : mm.isInProcess) {
return mm;
}
}
return null;
},
/**
* Connect the a process actor.
*/
async getTarget() {
if (!DevToolsServer.allowChromeProcess) {
return {
error: "forbidden",
message: "You are not allowed to debug processes.",
};
}
if (this.isParent) {
return this._parentProcessConnect();
}
// This is a remote process we are connecting to
return this._childProcessConnect();
},
/**
* Return a Watcher actor, allowing to keep track of targets which
* already exists or will be created. It also helps knowing when they
* are destroyed.
*/
getWatcher() {
if (!this.watcher) {
this.watcher = new WatcherActor(this.conn);
this.manage(this.watcher);
}
return this.watcher;
},
form() {
return {
actor: this.actorID,
id: this.id,
isParent: this.isParent,
traits: {
// Supports the Watcher actor. Can be removed as part of Bug 1680280.
watcher: true,
},
};
},
destroy() {
this._browsingContextTargetActor = null;
Actor.prototype.destroy.call(this);
},
});
exports.ProcessDescriptorActor = ProcessDescriptorActor;
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