Telegram Web, preconfigured for usage in I2P. http://web.telegram.i2p/
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/*!
* Webogram v0.7 - messaging web application for MTProto
* https://github.com/zhukov/webogram
* Copyright (C) 2014 Igor Zhukov <igor.beatle@gmail.com>
* https://github.com/zhukov/webogram/blob/master/LICENSE
*/
function TLSerialization (options) {
options = options || {}
this.maxLength = options.startMaxLength || 2048 // 2Kb
this.offset = 0 // in bytes
this.createBuffer()
// this.debug = options.debug !== undefined ? options.debug : Config.Modes.debug
this.mtproto = options.mtproto || false
return this
}
TLSerialization.prototype.createBuffer = function () {
this.buffer = new ArrayBuffer(this.maxLength)
this.intView = new Int32Array(this.buffer)
this.byteView = new Uint8Array(this.buffer)
}
TLSerialization.prototype.getArray = function () {
var resultBuffer = new ArrayBuffer(this.offset)
var resultArray = new Int32Array(resultBuffer)
resultArray.set(this.intView.subarray(0, this.offset / 4))
return resultArray
}
TLSerialization.prototype.getBuffer = function () {
return this.getArray().buffer
}
TLSerialization.prototype.getBytes = function (typed) {
if (typed) {
var resultBuffer = new ArrayBuffer(this.offset)
var resultArray = new Uint8Array(resultBuffer)
resultArray.set(this.byteView.subarray(0, this.offset))
return resultArray
}
var bytes = []
for (var i = 0; i < this.offset; i++) {
bytes.push(this.byteView[i])
}
return bytes
}
TLSerialization.prototype.checkLength = function (needBytes) {
if (this.offset + needBytes < this.maxLength) {
return
}
console.trace('Increase buffer', this.offset, needBytes, this.maxLength)
this.maxLength = Math.ceil(Math.max(this.maxLength * 2, this.offset + needBytes + 16) / 4) * 4
var previousBuffer = this.buffer
var previousArray = new Int32Array(previousBuffer)
this.createBuffer()
new Int32Array(this.buffer).set(previousArray)
}
TLSerialization.prototype.writeInt = function (i, field) {
this.debug && console.log('>>>', i.toString(16), i, field)
this.checkLength(4)
this.intView[this.offset / 4] = i
this.offset += 4
}
TLSerialization.prototype.storeInt = function (i, field) {
this.writeInt(i, (field || '') + ':int')
}
TLSerialization.prototype.storeBool = function (i, field) {
if (i) {
this.writeInt(0x997275b5, (field || '') + ':bool')
} else {
this.writeInt(0xbc799737, (field || '') + ':bool')
}
}
TLSerialization.prototype.storeLongP = function (iHigh, iLow, field) {
this.writeInt(iLow, (field || '') + ':long[low]')
this.writeInt(iHigh, (field || '') + ':long[high]')
}
TLSerialization.prototype.storeLong = function (sLong, field) {
if (angular.isArray(sLong)) {
if (sLong.length == 2) {
return this.storeLongP(sLong[0], sLong[1], field)
} else {
return this.storeIntBytes(sLong, 64, field)
}
}
if (typeof sLong != 'string') {
sLong = sLong ? sLong.toString() : '0'
}
var divRem = bigStringInt(sLong).divideAndRemainder(bigint(0x100000000))
this.writeInt(intToUint(divRem[1].intValue()), (field || '') + ':long[low]')
this.writeInt(intToUint(divRem[0].intValue()), (field || '') + ':long[high]')
}
TLSerialization.prototype.storeDouble = function (f, field) {
var buffer = new ArrayBuffer(8)
var intView = new Int32Array(buffer)
var doubleView = new Float64Array(buffer)
doubleView[0] = f
this.writeInt(intView[0], (field || '') + ':double[low]')
this.writeInt(intView[1], (field || '') + ':double[high]')
}
TLSerialization.prototype.storeString = function (s, field) {
this.debug && console.log('>>>', s, (field || '') + ':string')
if (s === undefined) {
s = ''
}
var sUTF8 = unescape(encodeURIComponent(s))
this.checkLength(sUTF8.length + 8)
var len = sUTF8.length
if (len <= 253) {
this.byteView[this.offset++] = len
} else {
this.byteView[this.offset++] = 254
this.byteView[this.offset++] = len & 0xFF
this.byteView[this.offset++] = (len & 0xFF00) >> 8
this.byteView[this.offset++] = (len & 0xFF0000) >> 16
}
for (var i = 0; i < len; i++) {
this.byteView[this.offset++] = sUTF8.charCodeAt(i)
}
// Padding
while (this.offset % 4) {
this.byteView[this.offset++] = 0
}
}
TLSerialization.prototype.storeBytes = function (bytes, field) {
if (bytes instanceof ArrayBuffer) {
bytes = new Uint8Array(bytes)
}
else if (bytes === undefined) {
bytes = []
}
this.debug && console.log('>>>', bytesToHex(bytes), (field || '') + ':bytes')
var len = bytes.byteLength || bytes.length
this.checkLength(len + 8)
if (len <= 253) {
this.byteView[this.offset++] = len
} else {
this.byteView[this.offset++] = 254
this.byteView[this.offset++] = len & 0xFF
this.byteView[this.offset++] = (len & 0xFF00) >> 8
this.byteView[this.offset++] = (len & 0xFF0000) >> 16
}
this.byteView.set(bytes, this.offset)
this.offset += len
// Padding
while (this.offset % 4) {
this.byteView[this.offset++] = 0
}
}
TLSerialization.prototype.storeIntBytes = function (bytes, bits, field) {
if (bytes instanceof ArrayBuffer) {
bytes = new Uint8Array(bytes)
}
var len = bytes.length
if ((bits % 32) || (len * 8) != bits) {
throw new Error('Invalid bits: ' + bits + ', ' + bytes.length)
}
this.debug && console.log('>>>', bytesToHex(bytes), (field || '') + ':int' + bits)
this.checkLength(len)
this.byteView.set(bytes, this.offset)
this.offset += len
}
TLSerialization.prototype.storeRawBytes = function (bytes, field) {
if (bytes instanceof ArrayBuffer) {
bytes = new Uint8Array(bytes)
}
var len = bytes.length
this.debug && console.log('>>>', bytesToHex(bytes), (field || ''))
this.checkLength(len)
this.byteView.set(bytes, this.offset)
this.offset += len
}
TLSerialization.prototype.storeMethod = function (methodName, params) {
var schema = this.mtproto ? Config.Schema.MTProto : Config.Schema.API
var methodData = false,
i
for (i = 0; i < schema.methods.length; i++) {
if (schema.methods[i].method == methodName) {
methodData = schema.methods[i]
break
}
}
if (!methodData) {
throw new Error('No method ' + methodName + ' found')
}
this.storeInt(intToUint(methodData.id), methodName + '[id]')
var param, type
var i, condType
var fieldBit
var len = methodData.params.length
for (i = 0; i < len; i++) {
param = methodData.params[i]
type = param.type
if (type.indexOf('?') !== -1) {
condType = type.split('?')
fieldBit = condType[0].split('.')
if (!(params[fieldBit[0]] & (1 << fieldBit[1]))) {
continue
}
type = condType[1]
}
this.storeObject(params[param.name], type, methodName + '[' + param.name + ']')
}
return methodData.type
}
TLSerialization.prototype.storeObject = function (obj, type, field) {
switch (type) {
case '#':
case 'int':
return this.storeInt(obj, field)
case 'long':
return this.storeLong(obj, field)
case 'int128':
return this.storeIntBytes(obj, 128, field)
case 'int256':
return this.storeIntBytes(obj, 256, field)
case 'int512':
return this.storeIntBytes(obj, 512, field)
case 'string':
return this.storeString(obj, field)
case 'bytes':
return this.storeBytes(obj, field)
case 'double':
return this.storeDouble(obj, field)
case 'Bool':
return this.storeBool(obj, field)
case 'true':
return
}
if (angular.isArray(obj)) {
if (type.substr(0, 6) == 'Vector') {
this.writeInt(0x1cb5c415, field + '[id]')
}
else if (type.substr(0, 6) != 'vector') {
throw new Error('Invalid vector type ' + type)
}
var itemType = type.substr(7, type.length - 8); // for "Vector<itemType>"
this.writeInt(obj.length, field + '[count]')
for (var i = 0; i < obj.length; i++) {
this.storeObject(obj[i], itemType, field + '[' + i + ']')
}
return true
}
else if (type.substr(0, 6).toLowerCase() == 'vector') {
throw new Error('Invalid vector object')
}
if (!angular.isObject(obj)) {
throw new Error('Invalid object for type ' + type)
}
var schema = this.mtproto ? Config.Schema.MTProto : Config.Schema.API
var predicate = obj['_']
var isBare = false
var constructorData = false,
i
if (isBare = (type.charAt(0) == '%')) {
type = type.substr(1)
}
for (i = 0; i < schema.constructors.length; i++) {
if (schema.constructors[i].predicate == predicate) {
constructorData = schema.constructors[i]
break
}
}
if (!constructorData) {
throw new Error('No predicate ' + predicate + ' found')
}
if (predicate == type) {
isBare = true
}
if (!isBare) {
this.writeInt(intToUint(constructorData.id), field + '[' + predicate + '][id]')
}
var param, type
var i, condType
var fieldBit
var len = constructorData.params.length
for (i = 0; i < len; i++) {
param = constructorData.params[i]
type = param.type
if (type.indexOf('?') !== -1) {
condType = type.split('?')
fieldBit = condType[0].split('.')
if (!(obj[fieldBit[0]] & (1 << fieldBit[1]))) {
continue
}
type = condType[1]
}
this.storeObject(obj[param.name], type, field + '[' + predicate + '][' + param.name + ']')
}
return constructorData.type
}
function TLDeserialization (buffer, options) {
options = options || {}
this.offset = 0 // in bytes
this.override = options.override || {}
this.buffer = buffer
this.intView = new Uint32Array(this.buffer)
this.byteView = new Uint8Array(this.buffer)
// this.debug = options.debug !== undefined ? options.debug : Config.Modes.debug
this.mtproto = options.mtproto || false
return this
}
TLDeserialization.prototype.readInt = function (field) {
if (this.offset >= this.intView.length * 4) {
throw new Error('Nothing to fetch: ' + field)
}
var i = this.intView[this.offset / 4]
this.debug && console.log('<<<', i.toString(16), i, field)
this.offset += 4
return i
}
TLDeserialization.prototype.fetchInt = function (field) {
return this.readInt((field || '') + ':int')
}
TLDeserialization.prototype.fetchDouble = function (field) {
var buffer = new ArrayBuffer(8)
var intView = new Int32Array(buffer)
var doubleView = new Float64Array(buffer)
intView[0] = this.readInt((field || '') + ':double[low]'),
intView[1] = this.readInt((field || '') + ':double[high]')
return doubleView[0]
}
TLDeserialization.prototype.fetchLong = function (field) {
var iLow = this.readInt((field || '') + ':long[low]')
var iHigh = this.readInt((field || '') + ':long[high]')
var longDec = bigint(iHigh).shiftLeft(32).add(bigint(iLow)).toString()
return longDec
}
TLDeserialization.prototype.fetchBool = function (field) {
var i = this.readInt((field || '') + ':bool')
if (i == 0x997275b5) {
return true
} else if (i == 0xbc799737) {
return false
}
this.offset -= 4
return this.fetchObject('Object', field)
}
TLDeserialization.prototype.fetchString = function (field) {
var len = this.byteView[this.offset++]
if (len == 254) {
var len = this.byteView[this.offset++] |
(this.byteView[this.offset++] << 8) |
(this.byteView[this.offset++] << 16)
}
var sUTF8 = ''
for (var i = 0; i < len; i++) {
sUTF8 += String.fromCharCode(this.byteView[this.offset++])
}
// Padding
while (this.offset % 4) {
this.offset++
}
try {
var s = decodeURIComponent(escape(sUTF8))
} catch (e) {
var s = sUTF8
}
this.debug && console.log('<<<', s, (field || '') + ':string')
return s
}
TLDeserialization.prototype.fetchBytes = function (field) {
var len = this.byteView[this.offset++]
if (len == 254) {
len = this.byteView[this.offset++] |
(this.byteView[this.offset++] << 8) |
(this.byteView[this.offset++] << 16)
}
var bytes = this.byteView.subarray(this.offset, this.offset + len)
this.offset += len
// Padding
while (this.offset % 4) {
this.offset++
}
this.debug && console.log('<<<', bytesToHex(bytes), (field || '') + ':bytes')
return bytes
}
TLDeserialization.prototype.fetchIntBytes = function (bits, typed, field) {
if (bits % 32) {
throw new Error('Invalid bits: ' + bits)
}
var len = bits / 8
if (typed) {
var result = this.byteView.subarray(this.offset, this.offset + len)
this.offset += len
return result
}
var bytes = []
for (var i = 0; i < len; i++) {
bytes.push(this.byteView[this.offset++])
}
this.debug && console.log('<<<', bytesToHex(bytes), (field || '') + ':int' + bits)
return bytes
}
TLDeserialization.prototype.fetchRawBytes = function (len, typed, field) {
if (len === false) {
len = this.readInt((field || '') + '_length')
if (len > this.byteView.byteLength) {
throw new Error('Invalid raw bytes length: ' + len + ', buffer len: ' + this.byteView.byteLength)
}
}
if (typed) {
var bytes = new Uint8Array(len)
bytes.set(this.byteView.subarray(this.offset, this.offset + len))
this.offset += len
return bytes
}
var bytes = []
for (var i = 0; i < len; i++) {
bytes.push(this.byteView[this.offset++])
}
this.debug && console.log('<<<', bytesToHex(bytes), (field || ''))
return bytes
}
TLDeserialization.prototype.fetchObject = function (type, field) {
switch (type) {
case '#':
case 'int':
return this.fetchInt(field)
case 'long':
return this.fetchLong(field)
case 'int128':
return this.fetchIntBytes(128, false, field)
case 'int256':
return this.fetchIntBytes(256, false, field)
case 'int512':
return this.fetchIntBytes(512, false, field)
case 'string':
return this.fetchString(field)
case 'bytes':
return this.fetchBytes(field)
case 'double':
return this.fetchDouble(field)
case 'Bool':
return this.fetchBool(field)
case 'true':
return true
}
field = field || type || 'Object'
if (type.substr(0, 6) == 'Vector' || type.substr(0, 6) == 'vector') {
if (type.charAt(0) == 'V') {
var constructor = this.readInt(field + '[id]')
var constructorCmp = uintToInt(constructor)
if (constructorCmp == 0x3072cfa1) { // Gzip packed
var compressed = this.fetchBytes(field + '[packed_string]')
var uncompressed = gzipUncompress(compressed)
var buffer = bytesToArrayBuffer(uncompressed)
var newDeserializer = (new TLDeserialization(buffer))
return newDeserializer.fetchObject(type, field)
}
if (constructorCmp != 0x1cb5c415) {
throw new Error('Invalid vector constructor ' + constructor)
}
}
var len = this.readInt(field + '[count]')
var result = []
if (len > 0) {
var itemType = type.substr(7, type.length - 8); // for "Vector<itemType>"
for (var i = 0; i < len; i++) {
result.push(this.fetchObject(itemType, field + '[' + i + ']'))
}
}
return result
}
var schema = this.mtproto ? Config.Schema.MTProto : Config.Schema.API
var predicate = false
var constructorData = false
if (type.charAt(0) == '%') {
var checkType = type.substr(1)
for (var i = 0; i < schema.constructors.length; i++) {
if (schema.constructors[i].type == checkType) {
constructorData = schema.constructors[i]
break
}
}
if (!constructorData) {
throw new Error('Constructor not found for type: ' + type)
}
}
else if (type.charAt(0) >= 97 && type.charAt(0) <= 122) {
for (var i = 0; i < schema.constructors.length; i++) {
if (schema.constructors[i].predicate == type) {
constructorData = schema.constructors[i]
break
}
}
if (!constructorData) {
throw new Error('Constructor not found for predicate: ' + type)
}
}else {
var constructor = this.readInt(field + '[id]')
var constructorCmp = uintToInt(constructor)
if (constructorCmp == 0x3072cfa1) { // Gzip packed
var compressed = this.fetchBytes(field + '[packed_string]')
var uncompressed = gzipUncompress(compressed)
var buffer = bytesToArrayBuffer(uncompressed)
var newDeserializer = (new TLDeserialization(buffer))
return newDeserializer.fetchObject(type, field)
}
var index = schema.constructorsIndex
if (!index) {
schema.constructorsIndex = index = {}
for (var i = 0; i < schema.constructors.length; i++) {
index[schema.constructors[i].id] = i
}
}
var i = index[constructorCmp]
if (i) {
constructorData = schema.constructors[i]
}
var fallback = false
if (!constructorData && this.mtproto) {
var schemaFallback = Config.Schema.API
for (i = 0; i < schemaFallback.constructors.length; i++) {
if (schemaFallback.constructors[i].id == constructorCmp) {
constructorData = schemaFallback.constructors[i]
delete this.mtproto
fallback = true
break
}
}
}
if (!constructorData) {
throw new Error('Constructor not found: ' + constructor + ' ' + this.fetchInt() + ' ' + this.fetchInt())
}
}
predicate = constructorData.predicate
var result = {'_': predicate}
var overrideKey = (this.mtproto ? 'mt_' : '') + predicate
var self = this
if (this.override[overrideKey]) {
this.override[overrideKey].apply(this, [result, field + '[' + predicate + ']'])
} else {
var i, param
var type, isCond
var condType, fieldBit
var value
var len = constructorData.params.length
for (i = 0; i < len; i++) {
param = constructorData.params[i]
type = param.type
if (type == '#' && result.pFlags === undefined) {
result.pFlags = {}
}
if (isCond = (type.indexOf('?') !== -1)) {
condType = type.split('?')
fieldBit = condType[0].split('.')
if (!(result[fieldBit[0]] & (1 << fieldBit[1]))) {
continue
}
type = condType[1]
}
value = self.fetchObject(type, field + '[' + predicate + '][' + param.name + ']')
if (isCond && type === 'true') {
result.pFlags[param.name] = value
} else {
result[param.name] = value
}
}
}
if (fallback) {
this.mtproto = true
}
return result
}
TLDeserialization.prototype.getOffset = function () {
return this.offset
}
TLDeserialization.prototype.fetchEnd = function () {
if (this.offset != this.byteView.length) {
throw new Error('Fetch end with non-empty buffer')
}
return true
}