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// Copyright 2017 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
(function() {
var internal = mojo.internal;
function validateControlRequestWithResponse(message) {
var messageValidator = new internal.Validator(message);
var error = messageValidator.validateMessageIsRequestExpectingResponse();
if (error !== internal.validationError.NONE) {
throw error;
}
if (message.getName() != mojo.interface_control2.kRunMessageId) {
throw new Error("Control message name is not kRunMessageId");
}
// Validate payload.
error = mojo.interface_control2.RunMessageParams.validate(messageValidator,
message.getHeaderNumBytes());
if (error != internal.validationError.NONE) {
throw error;
}
}
function validateControlRequestWithoutResponse(message) {
var messageValidator = new internal.Validator(message);
var error = messageValidator.validateMessageIsRequestWithoutResponse();
if (error != internal.validationError.NONE) {
throw error;
}
if (message.getName() != mojo.interface_control2.kRunOrClosePipeMessageId) {
throw new Error("Control message name is not kRunOrClosePipeMessageId");
}
// Validate payload.
error = mojo.interface_control2.RunOrClosePipeMessageParams.validate(
messageValidator, message.getHeaderNumBytes());
if (error != internal.validationError.NONE) {
throw error;
}
}
function runOrClosePipe(message, interface_version) {
var reader = new internal.MessageReader(message);
var runOrClosePipeMessageParams = reader.decodeStruct(
mojo.interface_control2.RunOrClosePipeMessageParams);
return interface_version >=
runOrClosePipeMessageParams.input.require_version.version;
}
function run(message, responder, interface_version) {
var reader = new internal.MessageReader(message);
var runMessageParams =
reader.decodeStruct(mojo.interface_control2.RunMessageParams);
var runOutput = null;
if (runMessageParams.input.query_version) {
runOutput = new mojo.interface_control2.RunOutput();
runOutput.query_version_result = new
mojo.interface_control2.QueryVersionResult(
{'version': interface_version});
}
var runResponseMessageParams = new
mojo.interface_control2.RunResponseMessageParams();
runResponseMessageParams.output = runOutput;
var messageName = mojo.interface_control2.kRunMessageId;
var payloadSize =
mojo.interface_control2.RunResponseMessageParams.encodedSize;
var requestID = reader.requestID;
var builder = new internal.MessageWithRequestIDBuilder(messageName,
payloadSize, internal.kMessageIsResponse, requestID);
builder.encodeStruct(mojo.interface_control2.RunResponseMessageParams,
runResponseMessageParams);
responder.accept(builder.finish());
return true;
}
function isInterfaceControlMessage(message) {
return message.getName() == mojo.interface_control2.kRunMessageId ||
message.getName() ==
mojo.interface_control2.kRunOrClosePipeMessageId;
}
function ControlMessageHandler(interface_version) {
this.interface_version = interface_version;
}
ControlMessageHandler.prototype.accept = function(message) {
validateControlRequestWithoutResponse(message);
return runOrClosePipe(message, this.interface_version);
};
ControlMessageHandler.prototype.acceptWithResponder = function(message,
responder) {
validateControlRequestWithResponse(message);
return run(message, responder, this.interface_version);
};
internal.ControlMessageHandler = ControlMessageHandler;
internal.isInterfaceControlMessage = isInterfaceControlMessage;
})();
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