Bug 933588 - Part 2: NfcMessageHandler. r=dimi

This commit is contained in:
Yoshi Huang 2014-07-07 18:18:20 +08:00
parent 2ec13a75d9
commit 6336ac6544
7 changed files with 404 additions and 434 deletions

View File

@ -501,7 +501,11 @@ Nfc.prototype = {
}
switch (message.type) {
case "techDiscovered":
case "InitializedNotification":
// Do nothing.
break;
case "TechDiscoveredNotification":
message.type = "techDiscovered";
this._currentSessionId = message.sessionId;
// Check if the session token already exists. If exists, continue to use the same one.
@ -516,7 +520,8 @@ Nfc.prototype = {
gSystemMessenger.broadcastMessage("nfc-manager-tech-discovered", message);
break;
case "techLost":
case "TechLostNotification":
message.type = "techLost";
gMessageManager._unregisterMessageTarget(this.sessionTokenMap[this._currentSessionId], null);
// Update the upper layers with a session token (alias)

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@ -0,0 +1,45 @@
/* 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/. */
#ifndef NfcGonkMessage_h
#define NfcGonkMessage_h
namespace mozilla {
#define NFCD_MAJOR_VERSION 1
#define NFCD_MINOR_VERSION 7
enum NfcRequest {
eNfcRequest_Config = 0,
eNfcRequest_Connect,
eNfcRequest_Close,
eNfcRequest_GetDetailsNDEF,
eNfcRequest_ReadNDEF,
eNfcRequest_WriteNDEF,
eNfcRequest_MakeReadOnlyNDEF,
};
enum NfcResponse {
eNfcResponse_General = 1000,
eNfcResponse_Config,
eNfcResponse_GetDetailsNDEF,
eNfcResponse_ReadNDEF,
};
enum NfcNotification {
eNfcNotification_Initialized = 2000,
eNfcNotification_TechDiscovered,
eNfcNotification_TechLost,
};
enum NfcTechlogy {
eNfcTechlogy_NDEF = 0,
eNfcTechlogy_NDEFWritable,
eNfcTechlogy_NDEFFormattable,
eNfcTechlogy_P2P,
};
} // namespace mozilla
#endif // NfcGonkMessage_h

View File

@ -3,17 +3,65 @@
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "NfcMessageHandler.h"
#include <binder/Parcel.h>
#include "nsDebug.h"
#include "NfcGonkMessage.h"
#include "NfcOptions.h"
#include <android/log.h>
#define CHROMIUM_LOG(args...) __android_log_print(ANDROID_LOG_INFO, "NfcMessageHandler", args)
using namespace android;
using namespace mozilla;
static const char* kConfigRequest = "config";
static const char* kGetDetailsNDEF = "getDetailsNDEF";
static const char* kReadNDEFRequest = "readNDEF";
static const char* kWriteNDEFRequest = "writeNDEF";
static const char* kMakeReadOnlyNDEFRequest = "makeReadOnlyNDEF";
static const char* kConnectRequest = "connect";
static const char* kCloseRequest = "close";
static const char* kConfigResponse = "ConfigResponse";
static const char* kGetDetailsNDEFResponse = "GetDetailsNDEFResponse";
static const char* kReadNDEFResponse = "ReadNDEFResponse";
static const char* kWriteNDEFResponse = "WriteNDEFResponse";
static const char* kMakeReadOnlyNDEFResponse = "MakeReadOnlyNDEFResponse";
static const char* kConnectResponse = "ConnectResponse";
static const char* kCloseResponse = "CloseResponse";
static const char* kInitializedNotification = "InitializedNotification";
static const char* kTechDiscoveredNotification = "TechDiscoveredNotification";
static const char* kTechLostNotification = "TechLostNotification";
bool
NfcMessageHandler::Marshall(Parcel& aParcel, const CommandOptions& aOptions)
{
bool result;
// TODO: Implementation will be Bug 933588 - Part 2.
const char* type = NS_ConvertUTF16toUTF8(aOptions.mType).get();
if (!strcmp(type, kConfigRequest)) {
result = ConfigRequest(aParcel, aOptions);
} else if (!strcmp(type, kGetDetailsNDEF)) {
result = GetDetailsNDEFRequest(aParcel, aOptions);
} else if (!strcmp(type, kReadNDEFRequest)) {
result = ReadNDEFRequest(aParcel, aOptions);
} else if (!strcmp(type, kWriteNDEFRequest)) {
result = WriteNDEFRequest(aParcel, aOptions);
mPendingReqQueue.AppendElement(eNfcRequest_WriteNDEF);
} else if (!strcmp(type, kMakeReadOnlyNDEFRequest)) {
result = MakeReadOnlyNDEFRequest(aParcel, aOptions);
mPendingReqQueue.AppendElement(eNfcRequest_MakeReadOnlyNDEF);
} else if (!strcmp(type, kConnectRequest)) {
result = ConnectRequest(aParcel, aOptions);
mPendingReqQueue.AppendElement(eNfcRequest_Connect);
} else if (!strcmp(type, kCloseRequest)) {
result = CloseRequest(aParcel, aOptions);
mPendingReqQueue.AppendElement(eNfcRequest_Close);
} else {
result = false;
}
return result;
}
@ -21,7 +69,279 @@ bool
NfcMessageHandler::Unmarshall(const Parcel& aParcel, EventOptions& aOptions)
{
bool result;
// TODO: Implementation will be Bug 933588 - Part 2.
uint32_t parcelSize = htonl(aParcel.readInt32());
int32_t type = aParcel.readInt32();
switch (type) {
case eNfcResponse_General:
result = GeneralResponse(aParcel, aOptions);
break;
case eNfcResponse_Config:
result = ConfigResponse(aParcel, aOptions);
break;
case eNfcResponse_GetDetailsNDEF:
result = GetDetailsNDEFResponse(aParcel, aOptions);
break;
case eNfcResponse_ReadNDEF:
result = ReadNDEFResponse(aParcel, aOptions);
break;
case eNfcNotification_Initialized:
result = InitializeNotification(aParcel, aOptions);
break;
case eNfcNotification_TechDiscovered:
result = TechDiscoveredNotification(aParcel, aOptions);
break;
case eNfcNotification_TechLost:
result = TechLostNotification(aParcel, aOptions);
break;
default:
result = false;
break;
}
return result;
}
bool
NfcMessageHandler::GeneralResponse(const Parcel& aParcel, EventOptions& aOptions)
{
const char* type;
NS_ENSURE_TRUE(!mPendingReqQueue.IsEmpty(), false);
int pendingReq = mPendingReqQueue[0];
mPendingReqQueue.RemoveElementAt(0);
switch (pendingReq) {
case eNfcRequest_WriteNDEF:
type = kWriteNDEFResponse;
break;
case eNfcRequest_MakeReadOnlyNDEF:
type = kMakeReadOnlyNDEFResponse;
break;
case eNfcRequest_Connect:
type = kConnectResponse;
break;
case eNfcRequest_Close:
type = kCloseResponse;
break;
}
aOptions.mType = NS_ConvertUTF8toUTF16(type);
aOptions.mStatus = aParcel.readInt32();
aOptions.mSessionId = aParcel.readInt32();
NS_ENSURE_TRUE(!mRequestIdQueue.IsEmpty(), false);
aOptions.mRequestId = mRequestIdQueue[0];
mRequestIdQueue.RemoveElementAt(0);
return true;
}
bool
NfcMessageHandler::ConfigRequest(Parcel& aParcel, const CommandOptions& aOptions)
{
aParcel.writeInt32(eNfcRequest_Config);
aParcel.writeInt32(aOptions.mPowerLevel);
mRequestIdQueue.AppendElement(aOptions.mRequestId);
mPowerLevelQueue.AppendElement(aOptions.mPowerLevel);
return true;
}
bool
NfcMessageHandler::ConfigResponse(const Parcel& aParcel, EventOptions& aOptions)
{
aOptions.mType = NS_ConvertUTF8toUTF16(kConfigResponse);
aOptions.mStatus = aParcel.readInt32();
NS_ENSURE_TRUE(!mRequestIdQueue.IsEmpty(), false);
aOptions.mRequestId = mRequestIdQueue[0];
mRequestIdQueue.RemoveElementAt(0);
NS_ENSURE_TRUE(!mPowerLevelQueue.IsEmpty(), false);
aOptions.mPowerLevel = mPowerLevelQueue[0];
mPowerLevelQueue.RemoveElementAt(0);
return true;
}
bool
NfcMessageHandler::GetDetailsNDEFRequest(Parcel& aParcel, const CommandOptions& aOptions)
{
aParcel.writeInt32(eNfcRequest_GetDetailsNDEF);
aParcel.writeInt32(aOptions.mSessionId);
mRequestIdQueue.AppendElement(aOptions.mRequestId);
return true;
}
bool
NfcMessageHandler::GetDetailsNDEFResponse(const Parcel& aParcel, EventOptions& aOptions)
{
aOptions.mType = NS_ConvertUTF8toUTF16(kGetDetailsNDEFResponse);
aOptions.mStatus = aParcel.readInt32();
aOptions.mSessionId = aParcel.readInt32();
int readOnly = aParcel.readInt32();
aOptions.mIsReadOnly = readOnly & 0xff;
aOptions.mCanBeMadeReadOnly = (readOnly >> 8) & 0xff;
aOptions.mMaxSupportedLength = aParcel.readInt32();
NS_ENSURE_TRUE(!mRequestIdQueue.IsEmpty(), false);
aOptions.mRequestId = mRequestIdQueue[0];
mRequestIdQueue.RemoveElementAt(0);
return true;
}
bool
NfcMessageHandler::ReadNDEFRequest(Parcel& aParcel, const CommandOptions& aOptions)
{
aParcel.writeInt32(eNfcRequest_ReadNDEF);
aParcel.writeInt32(aOptions.mSessionId);
mRequestIdQueue.AppendElement(aOptions.mRequestId);
return true;
}
bool
NfcMessageHandler::ReadNDEFResponse(const Parcel& aParcel, EventOptions& aOptions)
{
aOptions.mType = NS_ConvertUTF8toUTF16(kReadNDEFResponse);
aOptions.mStatus = aParcel.readInt32();
aOptions.mSessionId = aParcel.readInt32();
NS_ENSURE_TRUE(!mRequestIdQueue.IsEmpty(), false);
aOptions.mRequestId = mRequestIdQueue[0];
mRequestIdQueue.RemoveElementAt(0);
ReadNDEFMessage(aParcel, aOptions);
return true;
}
bool
NfcMessageHandler::WriteNDEFRequest(Parcel& aParcel, const CommandOptions& aOptions)
{
aParcel.writeInt32(eNfcRequest_WriteNDEF);
aParcel.writeInt32(aOptions.mSessionId);
WriteNDEFMessage(aParcel, aOptions);
mRequestIdQueue.AppendElement(aOptions.mRequestId);
return true;
}
bool
NfcMessageHandler::MakeReadOnlyNDEFRequest(Parcel& aParcel, const CommandOptions& aOptions)
{
aParcel.writeInt32(eNfcRequest_MakeReadOnlyNDEF);
aParcel.writeInt32(aOptions.mSessionId);
mRequestIdQueue.AppendElement(aOptions.mRequestId);
return true;
}
bool
NfcMessageHandler::ConnectRequest(Parcel& aParcel, const CommandOptions& aOptions)
{
aParcel.writeInt32(eNfcRequest_Connect);
aParcel.writeInt32(aOptions.mSessionId);
aParcel.writeInt32(aOptions.mTechType);
mRequestIdQueue.AppendElement(aOptions.mRequestId);
return true;
}
bool
NfcMessageHandler::CloseRequest(Parcel& aParcel, const CommandOptions& aOptions)
{
aParcel.writeInt32(eNfcRequest_Close);
aParcel.writeInt32(aOptions.mSessionId);
mRequestIdQueue.AppendElement(aOptions.mRequestId);
return true;
}
bool
NfcMessageHandler::InitializeNotification(const Parcel& aParcel, EventOptions& aOptions)
{
aOptions.mType = NS_ConvertUTF8toUTF16(kInitializedNotification);
aOptions.mStatus = aParcel.readInt32();
aOptions.mMajorVersion = aParcel.readInt32();
aOptions.mMinorVersion = aParcel.readInt32();
if (aOptions.mMajorVersion != NFCD_MAJOR_VERSION &&
aOptions.mMinorVersion != NFCD_MAJOR_VERSION) {
CHROMIUM_LOG("NFCD version mismatched. majorVersion: %d, minorVersion: %d",
aOptions.mMajorVersion, aOptions.mMinorVersion);
}
return true;
}
bool
NfcMessageHandler::TechDiscoveredNotification(const Parcel& aParcel, EventOptions& aOptions)
{
aOptions.mType = NS_ConvertUTF8toUTF16(kTechDiscoveredNotification);
aOptions.mSessionId = aParcel.readInt32();
int32_t techCount = aParcel.readInt32();
aOptions.mTechList.AppendElements(
static_cast<const uint8_t*>(aParcel.readInplace(techCount)), techCount);
int32_t ndefMsgCount = aParcel.readInt32();
if (ndefMsgCount != 0) {
ReadNDEFMessage(aParcel, aOptions);
}
return true;
}
bool
NfcMessageHandler::TechLostNotification(const Parcel& aParcel, EventOptions& aOptions)
{
aOptions.mType = NS_ConvertUTF8toUTF16(kTechLostNotification);
aOptions.mSessionId = aParcel.readInt32();
return true;
}
bool
NfcMessageHandler::ReadNDEFMessage(const Parcel& aParcel, EventOptions& aOptions)
{
int32_t recordCount = aParcel.readInt32();
aOptions.mRecords.SetCapacity(recordCount);
for (int i = 0; i < recordCount; i++) {
int32_t tnf = aParcel.readInt32();
NDEFRecordStruct record;
record.mTnf = tnf;
int32_t typeLength = aParcel.readInt32();
record.mType.AppendElements(
static_cast<const uint8_t*>(aParcel.readInplace(typeLength)), typeLength);
int32_t idLength = aParcel.readInt32();
record.mId.AppendElements(
static_cast<const uint8_t*>(aParcel.readInplace(idLength)), idLength);
int32_t payloadLength = aParcel.readInt32();
record.mPayload.AppendElements(
static_cast<const uint8_t*>(aParcel.readInplace(payloadLength)), payloadLength);
aOptions.mRecords.AppendElement(record);
}
return true;
}
bool
NfcMessageHandler::WriteNDEFMessage(Parcel& aParcel, const CommandOptions& aOptions)
{
int recordCount = aOptions.mRecords.Length();
aParcel.writeInt32(recordCount);
for (int i = 0; i < recordCount; i++) {
const NDEFRecordStruct& record = aOptions.mRecords[i];
aParcel.writeInt32(record.mTnf);
void* data;
aParcel.writeInt32(record.mType.Length());
data = aParcel.writeInplace(record.mType.Length());
memcpy(data, record.mType.Elements(), record.mType.Length());
aParcel.writeInt32(record.mId.Length());
data = aParcel.writeInplace(record.mId.Length());
memcpy(data, record.mId.Elements(), record.mId.Length());
aParcel.writeInt32(record.mPayload.Length());
data = aParcel.writeInplace(record.mPayload.Length());
memcpy(data, record.mPayload.Elements(), record.mPayload.Length());
}
return true;
}

View File

@ -5,6 +5,9 @@
#ifndef NfcMessageHandler_h
#define NfcMessageHandler_h
#include "nsString.h"
#include "nsTArray.h"
namespace android {
class MOZ_EXPORT Parcel;
} // namespace android
@ -19,6 +22,31 @@ class NfcMessageHandler
public:
bool Marshall(android::Parcel& aParcel, const CommandOptions& aOptions);
bool Unmarshall(const android::Parcel& aParcel, EventOptions& aOptions);
private:
bool GeneralResponse(const android::Parcel& aParcel, EventOptions& aOptions);
bool ConfigRequest(android::Parcel& aParcel, const CommandOptions& options);
bool ConfigResponse(const android::Parcel& aParcel, EventOptions& aOptions);
bool GetDetailsNDEFRequest(android::Parcel& aParcel, const CommandOptions& options);
bool GetDetailsNDEFResponse(const android::Parcel& aParcel, EventOptions& aOptions);
bool ReadNDEFRequest(android::Parcel& aParcel, const CommandOptions& options);
bool ReadNDEFResponse(const android::Parcel& aParcel, EventOptions& aOptions);
bool WriteNDEFRequest(android::Parcel& aParcel, const CommandOptions& options);
bool MakeReadOnlyNDEFRequest(android::Parcel& aParcel, const CommandOptions& options);
bool ConnectRequest(android::Parcel& aParcel, const CommandOptions& options);
bool CloseRequest(android::Parcel& aParcel, const CommandOptions& options);
bool InitializeNotification(const android::Parcel& aParcel, EventOptions& aOptions);
bool TechDiscoveredNotification(const android::Parcel& aParcel, EventOptions& aOptions);
bool TechLostNotification(const android::Parcel& aParcel, EventOptions& aOptions);
bool ReadNDEFMessage(const android::Parcel& aParcel, EventOptions& aOptions);
bool WriteNDEFMessage(android::Parcel& aParcel, const CommandOptions& aOptions);
private:
nsTArray<int32_t> mPendingReqQueue;
nsTArray<nsString> mRequestIdQueue;
nsTArray<int32_t> mPowerLevelQueue;
};
} // namespace mozilla

View File

@ -110,8 +110,7 @@ if CONFIG['MOZ_NFC']:
'NfcContentHelper.js',
]
EXTRA_JS_MODULES += [
'nfc_consts.js',
'nfc_worker.js',
'nfc_consts.js',
]
FAIL_ON_WARNINGS = True

View File

@ -19,7 +19,6 @@
this.DEBUG_ALL = false;
// Set individually to debug specific layers
this.DEBUG_WORKER = false || DEBUG_ALL;
this.DEBUG_CONTENT_HELPER = false || DEBUG_ALL;
this.DEBUG_NFC = false || DEBUG_ALL;

View File

@ -1,426 +0,0 @@
/* Copyright 2012 Mozilla Foundation and Mozilla contributors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/* Copyright © 2013, Deutsche Telekom, Inc. */
"use strict";
importScripts("systemlibs.js", "nfc_consts.js");
importScripts("resource://gre/modules/workers/require.js");
// set to true in nfc_consts.js to see debug messages
let DEBUG = DEBUG_WORKER;
function getPaddingLen(len) {
return (len % 4) ? (4 - len % 4) : 0;
}
let Buf = {
__proto__: (function(){
return require("resource://gre/modules/workers/worker_buf.js").Buf;
})(),
init: function init() {
this._init();
},
/**
* Process one parcel.
*/
processParcel: function processParcel() {
let pduType = this.readInt32();
if (DEBUG) debug("Number of bytes available in Parcel : " + this.readAvailable);
NfcWorker.handleParcel(pduType, this.mCallback);
},
/**
* Start a new outgoing parcel.
*
* @param type
* Integer specifying the request type.
* @param callback
*/
newParcel: function newParcel(type, callback) {
if (DEBUG) debug("New outgoing parcel of type " + type);
this.mCallback = callback;
// We're going to leave room for the parcel size at the beginning.
this.outgoingIndex = this.PARCEL_SIZE_SIZE;
this.writeInt32(type);
},
simpleRequest: function simpleRequest(type) {
this.newParcel(type);
this.sendParcel();
},
onSendParcel: function onSendParcel(parcel) {
postNfcMessage(parcel);
},
/**
* TODO: Bug 933593. Callback map of NFC_RESPONSE_XXX and RequestID
* needs to be maintained
*/
mCallback: null,
};
/**
* Provide a high-level API representing NFC capabilities.
* Rensponsible for converting NFC requests from Content process to binary data
* and NFC Responses from binary data to dictionary objects.
*/
let NfcWorker = {
/**
* Handle incoming messages from the main UI thread.
*
* @param message
* Object containing the message. Messages are supposed
*/
handleDOMMessage: function handleMessage(message) {
if (DEBUG) debug("Received DOM message " + JSON.stringify(message));
let method = this[message.type];
if (typeof method != "function") {
if (DEBUG) {
debug("Don't know what to do with message " + JSON.stringify(message));
}
return;
}
method.call(this, message);
},
/**
* Unmarshals a NDEF message
*/
unMarshallNdefMessage: function unMarshallNdefMessage() {
let numOfRecords = Buf.readInt32();
debug("numOfRecords = " + numOfRecords);
if (numOfRecords <= 0) {
return null;
}
let records = [];
for (let i = 0; i < numOfRecords; i++) {
let tnf = Buf.readInt32() & 0xff;
let typeLength = Buf.readInt32();
let type = Buf.readUint8Array(typeLength);
let padding = getPaddingLen(typeLength);
for (let i = 0; i < padding; i++) {
Buf.readUint8();
}
let idLength = Buf.readInt32();
let id = Buf.readUint8Array(idLength);
padding = getPaddingLen(idLength);
for (let i = 0; i < padding; i++) {
Buf.readUint8();
}
let payloadLength = Buf.readInt32();
let payload = Buf.readUint8Array(payloadLength);
padding = getPaddingLen(payloadLength);
for (let i = 0; i < padding; i++) {
Buf.readUint8();
}
records.push({tnf: tnf,
type: type,
id: id,
payload: payload});
}
return records;
},
/**
* Read and return NDEF data, if present.
*/
readNDEF: function readNDEF(message) {
let cb = function callback() {
let error = Buf.readInt32();
let sessionId = Buf.readInt32();
let records = this.unMarshallNdefMessage();
message.type = "ReadNDEFResponse";
message.sessionId = sessionId;
message.records = records;
message.status = error;
this.sendDOMMessage(message);
}
Buf.newParcel(NFC_REQUEST_READ_NDEF, cb);
Buf.writeInt32(message.sessionId);
Buf.sendParcel();
},
/**
* Write to a target that accepts NDEF formattable data
*/
writeNDEF: function writeNDEF(message) {
let cb = function callback() {
let error = Buf.readInt32();
let sessionId = Buf.readInt32();
message.type = "WriteNDEFResponse";
message.sessionId = sessionId;
message.status = error;
this.sendDOMMessage(message);
};
Buf.newParcel(NFC_REQUEST_WRITE_NDEF, cb);
Buf.writeInt32(message.sessionId);
let records = message.records;
let numRecords = records.length;
Buf.writeInt32(numRecords);
for (let i = 0; i < numRecords; i++) {
let record = records[i];
Buf.writeInt32(record.tnf);
let typeLength = record.type ? record.type.length : 0;
Buf.writeInt32(typeLength);
for (let j = 0; j < typeLength; j++) {
Buf.writeUint8(record.type[j]);
}
let padding = getPaddingLen(typeLength);
for (let i = 0; i < padding; i++) {
Buf.writeUint8(0x00);
}
let idLength = record.id ? record.id.length : 0;
Buf.writeInt32(idLength);
for (let j = 0; j < idLength; j++) {
Buf.writeUint8(record.id[j]);
}
padding = getPaddingLen(idLength);
for (let i = 0; i < padding; i++) {
Buf.writeUint8(0x00);
}
let payloadLength = record.payload ? record.payload.length : 0;
Buf.writeInt32(payloadLength);
for (let j = 0; j < payloadLength; j++) {
Buf.writeUint8(record.payload[j]);
}
padding = getPaddingLen(payloadLength);
for (let i = 0; i < padding; i++) {
Buf.writeUint8(0x00);
}
}
Buf.sendParcel();
},
/**
* Make the NFC NDEF tag permanently read only
*/
makeReadOnlyNDEF: function makeReadOnlyNDEF(message) {
let cb = function callback() {
let error = Buf.readInt32();
let sessionId = Buf.readInt32();
message.type = "MakeReadOnlyNDEFResponse";
message.sessionId = sessionId;
message.status = error;
this.sendDOMMessage(message);
};
Buf.newParcel(NFC_REQUEST_MAKE_NDEF_READ_ONLY, cb);
Buf.writeInt32(message.sessionId);
Buf.sendParcel();
},
/**
* Retrieve metadata describing the NDEF formatted data, if present.
*/
getDetailsNDEF: function getDetailsNDEF(message) {
let cb = function callback() {
let error = Buf.readInt32();
let sessionId = Buf.readInt32();
let isReadOnly = Buf.readUint8();
let canBeMadeReadOnly = Buf.readUint8();
// Ensure that padding is taken care here after reading two successive uint8's
Buf.readUint8();
Buf.readUint8();
let maxSupportedLength = Buf.readInt32();
message.type = "GetDetailsNDEFResponse";
message.sessionId = sessionId;
message.isReadOnly = isReadOnly;
message.canBeMadeReadOnly = canBeMadeReadOnly;
message.maxSupportedLength = maxSupportedLength;
message.status = error;
this.sendDOMMessage(message);
};
Buf.newParcel(NFC_REQUEST_GET_DETAILS, cb);
Buf.writeInt32(message.sessionId);
Buf.sendParcel();
},
/**
* Open a connection to the NFC target.
*/
connect: function connect(message) {
let cb = function callback() {
let error = Buf.readInt32();
let sessionId = Buf.readInt32();
message.type = "ConnectResponse";
message.sessionId = sessionId;
message.status = error;
this.sendDOMMessage(message);
};
Buf.newParcel(NFC_REQUEST_CONNECT, cb);
Buf.writeInt32(message.sessionId);
Buf.writeInt32(message.techType);
Buf.sendParcel();
},
/**
* NFC Configuration
*/
config: function config(message) {
let cb = function callback() {
let error = Buf.readInt32();
message.type = "ConfigResponse";
message.status = error;
this.sendDOMMessage(message);
};
Buf.newParcel(NFC_REQUEST_CONFIG , cb);
Buf.writeInt32(message.powerLevel);
Buf.sendParcel();
},
/**
* Close connection to the NFC target.
*/
close: function close(message) {
let cb = function callback() {
let error = Buf.readInt32();
let sessionId = Buf.readInt32();
message.type = "CloseResponse";
message.sessionId = sessionId;
message.status = error;
this.sendDOMMessage(message);
};
Buf.newParcel(NFC_REQUEST_CLOSE , cb);
Buf.writeInt32(message.sessionId);
Buf.sendParcel();
},
handleParcel: function handleParcel(request_type, callback) {
let method = this[request_type];
if (typeof method == "function") {
if (DEBUG) debug("Handling parcel as " + method.name);
method.call(this);
} else if (typeof callback == "function") {
callback.call(this, request_type);
this.mCallback = null;
} else {
debug("Unable to handle ReqType:"+request_type);
}
},
/**
* Send messages to the main UI thread.
*/
sendDOMMessage: function sendDOMMessage(message) {
postMessage(message);
}
};
/**
* Notification Handlers
*/
NfcWorker[NFC_NOTIFICATION_INITIALIZED] = function NFC_NOTIFICATION_INITIALIZED () {
let status = Buf.readInt32();
let majorVersion = Buf.readInt32();
let minorVersion = Buf.readInt32();
debug("NFC_NOTIFICATION_INITIALIZED status:" + status);
if ((majorVersion != NFC_MAJOR_VERSION) || (minorVersion != NFC_MINOR_VERSION)) {
debug("Version Mismatch! Current Supported Version : " +
NFC_MAJOR_VERSION + "." + NFC_MINOR_VERSION +
" Received Version : " + majorVersion + "." + minorVersion);
}
};
NfcWorker[NFC_NOTIFICATION_TECH_DISCOVERED] = function NFC_NOTIFICATION_TECH_DISCOVERED() {
debug("NFC_NOTIFICATION_TECH_DISCOVERED");
let techList = [];
let records = null;
let sessionId = Buf.readInt32();
let techCount = Buf.readInt32();
for (let count = 0; count < techCount; count++) {
let tech = NFC_TECHS[Buf.readUint8()];
if (tech) {
techList.push(tech);
}
}
let padding = getPaddingLen(techCount);
for (let i = 0; i < padding; i++) {
Buf.readUint8();
}
let ndefMsgCount = Buf.readInt32();
if (ndefMsgCount > 0) {
records = this.unMarshallNdefMessage();
}
this.sendDOMMessage({type: "techDiscovered",
sessionId: sessionId,
techList: techList,
records: records});
};
NfcWorker[NFC_NOTIFICATION_TECH_LOST] = function NFC_NOTIFICATION_TECH_LOST() {
debug("NFC_NOTIFICATION_TECH_LOST");
let sessionId = Buf.readInt32();
debug("sessionId = " + sessionId);
this.sendDOMMessage({type: "techLost",
sessionId: sessionId,
});
};
/**
* Global stuff.
*/
if (!this.debug) {
// Debugging stub that goes nowhere.
this.debug = function debug(message) {
dump("Nfc Worker: " + message + "\n");
};
}
// Initialize buffers. This is a separate function so that unit tests can
// re-initialize the buffers at will.
Buf.init();
function onNfcMessage(data) {
Buf.processIncoming(data);
};
onmessage = function onmessage(event) {
NfcWorker.handleDOMMessage(event.data);
};
onerror = function onerror(event) {
debug("OnError: event: " + JSON.stringify(event));
debug("NFC Worker error " + event.message + " " + event.filename + ":" +
event.lineno + ":\n");
};