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isNode from 'detect-node'\r\nimport { is, isNil, type as rType } from 'ramda'\r\nimport { bigint, bigStringInt, uintToInt, intToUint, bytesToHex,\r\n gzipUncompress, bytesToArrayBuffer } from './bin'\r\n\r\nconst toUint32 = buf => {\r\n let ln, res\r\n if (!isNode) //TODO browser behavior not equals, why?\r\n return new Uint32Array( buf )\r\n if (buf.readUInt32LE) {\r\n ln = buf.byteLength / 4\r\n res = new Uint32Array( ln )\r\n for (let i = 0; i < ln; i++)\r\n res[i] = buf.readUInt32LE( i*4 )\r\n } else {\r\n const data = new DataView( buf )\r\n ln = data.byteLength / 4\r\n res = new Uint32Array( ln )\r\n for (let i = 0; i < ln; i++)\r\n res[i] = data.getUint32( i*4, true )\r\n }\r\n return res\r\n}\r\n\r\nexport const TL = (api, mtApi) => {\r\n\r\n class Serialization {\r\n constructor({ mtproto = false, startMaxLength = 2048 /* 2Kb */ } = {}) {\r\n this.maxLength = startMaxLength\r\n this.offset = 0 // in bytes\r\n\r\n this.createBuffer()\r\n this.mtproto = mtproto\r\n }\r\n\r\n createBuffer() {\r\n this.buffer = new ArrayBuffer(this.maxLength)\r\n this.intView = new Int32Array(this.buffer)\r\n this.byteView = new Uint8Array(this.buffer)\r\n }\r\n\r\n getArray() {\r\n const resultBuffer = new ArrayBuffer(this.offset)\r\n const resultArray = new Int32Array(resultBuffer)\r\n\r\n resultArray.set(this.intView.subarray(0, this.offset / 4))\r\n\r\n return resultArray\r\n }\r\n\r\n getBuffer() {\r\n return this.getArray().buffer\r\n }\r\n\r\n getBytes(typed) {\r\n if (typed) {\r\n const resultBuffer = new ArrayBuffer(this.offset)\r\n const resultArray = new Uint8Array(resultBuffer)\r\n\r\n resultArray.set(this.byteView.subarray(0, this.offset))\r\n\r\n return resultArray\r\n }\r\n\r\n const bytes = []\r\n for (let i = 0; i < this.offset; i++) {\r\n bytes.push(this.byteView[i])\r\n }\r\n return bytes\r\n }\r\n\r\n checkLength(needBytes) {\r\n if (this.offset + needBytes < this.maxLength) {\r\n return\r\n }\r\n\r\n console.trace('Increase buffer', this.offset, needBytes, this.maxLength)\r\n this.maxLength = Math.ceil(Math.max(this.maxLength * 2, this.offset + needBytes + 16) / 4) * 4\r\n const previousBuffer = this.buffer\r\n const previousArray = new Int32Array(previousBuffer)\r\n\r\n this.createBuffer()\r\n\r\n new Int32Array(this.buffer).set(previousArray)\r\n }\r\n\r\n writeInt(i, field) {\r\n this.debug && console.log('>>>', i.toString(16), i, field)\r\n\r\n this.checkLength(4)\r\n this.intView[this.offset / 4] = i\r\n this.offset += 4\r\n }\r\n\r\n storeIntString = (value, field) => {\r\n const valType = rType(value)\r\n switch (true) {\r\n case is(String, value): return this.storeString(value, field)\r\n case is(Number, value): return this.storeInt(value, field)\r\n default: throw new Error(`tl storeIntString field ${field} value type ${valType}`)\r\n }\r\n }\r\n\r\n storeInt = (i, field = '') => {\r\n this.writeInt(i, `${ field }:int`)\r\n }\r\n\r\n storeBool(i, field = '') {\r\n if (i) {\r\n this.writeInt(0x997275b5, `${ field }:bool`)\r\n } else {\r\n this.writeInt(0xbc799737, `${ field }:bool`)\r\n }\r\n }\r\n\r\n storeLongP(iHigh, iLow, field) {\r\n this.writeInt(iLow, `${ field }:long[low]`)\r\n this.writeInt(iHigh, `${ field }:long[high]`)\r\n }\r\n\r\n storeLong(sLong, field = '') {\r\n if (is(Array, sLong))\r\n return sLong.length === 2\r\n ? this.storeLongP(sLong[0], sLong[1], field)\r\n : this.storeIntBytes(sLong, 64, field)\r\n\r\n if (typeof sLong !== 'string')\r\n sLong = sLong\r\n ? sLong.toString()\r\n : '0'\r\n const divRem = bigStringInt(sLong).divideAndRemainder(bigint(0x100000000))\r\n\r\n this.writeInt(intToUint(divRem[1].intValue()), `${ field }:long[low]`)\r\n this.writeInt(intToUint(divRem[0].intValue()), `${ field }:long[high]`)\r\n }\r\n\r\n storeDouble(f, field = '') {\r\n const buffer = new ArrayBuffer(8)\r\n const intView = new Int32Array(buffer)\r\n const doubleView = new Float64Array(buffer)\r\n\r\n doubleView[0] = f\r\n\r\n this.writeInt(intView[0], `${ field }:double[low]`)\r\n this.writeInt(intView[1], `${ field }:double[high]`)\r\n }\r\n\r\n storeString(s, field = '') {\r\n this.debug && console.log('>>>', s, `${ field }:string`)\r\n\r\n if (s === undefined) {\r\n s = ''\r\n }\r\n const sUTF8 = unescape(encodeURIComponent(s))\r\n\r\n this.checkLength(sUTF8.length + 8)\r\n\r\n const len = sUTF8.length\r\n if (len <= 253) {\r\n this.byteView[this.offset++] = len\r\n } else {\r\n this.byteView[this.offset++] = 254\r\n this.byteView[this.offset++] = len & 0xFF\r\n this.byteView[this.offset++] = (len & 0xFF00) >> 8\r\n this.byteView[this.offset++] = (len & 0xFF0000) >> 16\r\n }\r\n for (let i = 0; i < len; i++) {\r\n this.byteView[this.offset++] = sUTF8.charCodeAt(i)\r\n }\r\n\r\n // Padding\r\n while (this.offset % 4) {\r\n this.byteView[this.offset++] = 0\r\n }\r\n }\r\n\r\n storeBytes(bytes, field = '') {\r\n if (bytes instanceof ArrayBuffer) {\r\n bytes = new Uint8Array(bytes)\r\n }\r\n else if (bytes === undefined) {\r\n bytes = []\r\n }\r\n this.debug && console.log('>>>', bytesToHex(bytes), `${ field }:bytes`)\r\n\r\n const len = bytes.byteLength || bytes.length\r\n this.checkLength(len + 8)\r\n if (len <= 253) {\r\n this.byteView[this.offset++] = len\r\n } else {\r\n this.byteView[this.offset++] = 254\r\n this.byteView[this.offset++] = len & 0xFF\r\n this.byteView[this.offset++] = (len & 0xFF00) >> 8\r\n this.byteView[this.offset++] = (len & 0xFF0000) >> 16\r\n }\r\n\r\n this.byteView.set(bytes, this.offset)\r\n this.offset += len\r\n\r\n // Padding\r\n while (this.offset % 4) {\r\n this.byteView[this.offset++] = 0\r\n }\r\n }\r\n\r\n storeIntBytes(bytes, bits, field = '') {\r\n if (bytes instanceof ArrayBuffer) {\r\n bytes = new Uint8Array(bytes)\r\n }\r\n const len = bytes.length\r\n if (bits % 32 || len * 8 != bits) {\r\n throw new Error(`Invalid bits: ${ bits }, ${ bytes.length}`)\r\n }\r\n\r\n this.debug && console.log('>>>', bytesToHex(bytes), `${ field }:int${ bits}`)\r\n this.checkLength(len)\r\n\r\n this.byteView.set(bytes, this.offset)\r\n this.offset += len\r\n }\r\n\r\n storeRawBytes(bytes, field = '') {\r\n if (bytes instanceof ArrayBuffer) {\r\n bytes = new Uint8Array(bytes)\r\n }\r\n const len = bytes.length\r\n\r\n this.debug && console.log('>>>', bytesToHex(bytes), field)\r\n this.checkLength(len)\r\n\r\n this.byteView.set(bytes, this.offset)\r\n this.offset += len\r\n }\r\n\r\n storeMethod(methodName, params) {\r\n const schema = this.mtproto\r\n ? mtApi\r\n : api\r\n let methodData = false\r\n\r\n for (let i = 0; i < schema.methods.length; i++) {\r\n if (schema.methods[i].method == methodName) {\r\n methodData = schema.methods[i]\r\n break\r\n }\r\n }\r\n if (!methodData) {\r\n throw new Error(`No method ${ methodName } found`)\r\n }\r\n\r\n this.storeInt(intToUint(methodData.id), `${methodName }[id]`)\r\n\r\n let param, type\r\n let condType\r\n let fieldBit\r\n const len = methodData.params.length\r\n for (let i = 0; i < len; i++) {\r\n param = methodData.params[i]\r\n type = param.type\r\n if (type.indexOf('?') !== -1) {\r\n condType = type.split('?')\r\n fieldBit = condType[0].split('.')\r\n if (!(params[fieldBit[0]] & 1 << fieldBit[1])) {\r\n continue\r\n }\r\n type = condType[1]\r\n }\r\n\r\n this.storeObject(params[param.name], type, `${methodName }[${ param.name }]`)\r\n }\r\n\r\n return methodData.type\r\n }\r\n\r\n storeObject(obj, type, field) {\r\n switch (type) {\r\n case '#':\r\n case 'int':\r\n return this.storeInt(obj, field)\r\n case 'long':\r\n return this.storeLong(obj, field)\r\n case 'int128':\r\n return this.storeIntBytes(obj, 128, field)\r\n case 'int256':\r\n return this.storeIntBytes(obj, 256, field)\r\n case 'int512':\r\n return this.storeIntBytes(obj, 512, field)\r\n case 'string':\r\n return this.storeString(obj, field)\r\n case 'bytes':\r\n return this.storeBytes(obj, field)\r\n case 'double':\r\n return this.storeDouble(obj, field)\r\n case 'Bool':\r\n return this.storeBool(obj, field)\r\n case 'true':\r\n return\r\n }\r\n\r\n if (is(Array, obj)) {\r\n if (type.substr(0, 6) == 'Vector') {\r\n this.writeInt(0x1cb5c415, `${field }[id]`)\r\n }\r\n else if (type.substr(0, 6) != 'vector') {\r\n throw new Error(`Invalid vector type ${ type}`)\r\n }\r\n const itemType = type.substr(7, type.length - 8) // for \"Vector<itemType>\"\r\n this.writeInt(obj.length, `${field }[count]`)\r\n for (let i = 0; i < obj.length; i++) {\r\n this.storeObject(obj[i], itemType, `${field }[${ i }]`)\r\n }\r\n return true\r\n }\r\n else if (type.substr(0, 6).toLowerCase() == 'vector') {\r\n throw new Error('Invalid vector object')\r\n }\r\n\r\n if (!is(Object, obj))\r\n throw new Error(`Invalid object for type ${ type}`)\r\n\r\n const schema = this.mtproto\r\n ? mtApi\r\n : api\r\n const predicate = obj['_']\r\n let isBare = false\r\n let constructorData = false\r\n\r\n if (isBare = type.charAt(0) == '%')\r\n type = type.substr(1)\r\n\r\n for (let i = 0; i < schema.constructors.length; i++) {\r\n if (schema.constructors[i].predicate == predicate) {\r\n constructorData = schema.constructors[i]\r\n break\r\n }\r\n }\r\n if (!constructorData)\r\n throw new Error(`No predicate ${ predicate } found`)\r\n\r\n if (predicate == type)\r\n isBare = true\r\n\r\n if (!isBare)\r\n this.writeInt(intToUint(constructorData.id), `${field }[${ predicate }][id]`)\r\n\r\n let param\r\n let condType\r\n let fieldBit\r\n const len = constructorData.params.length\r\n for (let i = 0; i < len; i++) {\r\n param = constructorData.params[i]\r\n type = param.type\r\n if (type.indexOf('?') !== -1) {\r\n condType = type.split('?')\r\n fieldBit = condType[0].split('.')\r\n if (!(obj[fieldBit[0]] & 1 << fieldBit[1])) {\r\n continue\r\n }\r\n type = condType[1]\r\n }\r\n\r\n this.storeObject(obj[param.name], type, `${field }[${ predicate }][${ param.name }]`)\r\n }\r\n\r\n return constructorData.type\r\n }\r\n\r\n }\r\n\r\n class Deserialization {\r\n constructor(buffer, { mtproto = false, override = {} } = {}) {\r\n this.offset = 0 // in bytes\r\n this.override = override\r\n\r\n this.buffer = buffer\r\n this.intView = toUint32(this.buffer)\r\n this.byteView = new Uint8Array(this.buffer)\r\n this.mtproto = mtproto\r\n }\r\n\r\n readInt(field) {\r\n if (this.offset >= this.intView.length * 4) {\r\n throw new Error(`Nothing to fetch: ${ field}`)\r\n }\r\n\r\n const i = this.intView[this.offset / 4]\r\n\r\n this.debug && console.log('<<<', i.toString(16), i, field)\r\n\r\n this.offset += 4\r\n\r\n return i\r\n }\r\n\r\n fetchInt(field = '') {\r\n return this.readInt(`${ field }:int`)\r\n }\r\n\r\n fetchDouble(field = '') {\r\n const buffer = new ArrayBuffer(8)\r\n const intView = new Int32Array(buffer)\r\n const doubleView = new Float64Array(buffer)\r\n\r\n intView[0] = this.readInt(`${ field }:double[low]`),\r\n intView[1] = this.readInt(`${ field }:double[high]`)\r\n\r\n return doubleView[0]\r\n }\r\n\r\n fetchLong(field = '') {\r\n const iLow = this.readInt(`${ field }:long[low]`)\r\n const iHigh = this.readInt(`${ field }:long[high]`)\r\n\r\n const longDec = bigint(iHigh)\r\n .shiftLeft(32)\r\n .add(bigint(iLow))\r\n .toString()\r\n\r\n return longDec\r\n }\r\n\r\n fetchBool(field = '') {\r\n const i = this.readInt(`${ field }:bool`)\r\n if (i == 0x997275b5) {\r\n return true\r\n } else if (i == 0xbc799737) {\r\n return false\r\n }\r\n\r\n this.offset -= 4\r\n return this.fetchObject('Object', field)\r\n }\r\n\r\n fetchString(field = '') {\r\n let len = this.byteView[this.offset++]\r\n\r\n if (len == 254) {\r\n len = this.byteView[this.offset++] |\r\n this.byteView[this.offset++] << 8 |\r\n this.byteView[this.offset++] << 16\r\n }\r\n\r\n let sUTF8 = ''\r\n for (let i = 0; i < len; i++) {\r\n sUTF8 += String.fromCharCode(this.byteView[this.offset++])\r\n }\r\n\r\n // Padding\r\n while (this.offset % 4) {\r\n this.offset++\r\n }\r\n let s\r\n try {\r\n s = decodeURIComponent(escape(sUTF8))\r\n } catch (e) {\r\n s = sUTF8\r\n }\r\n\r\n this.debug && console.log('<<<', s, `${ field }:string`)\r\n\r\n return s\r\n }\r\n\r\n fetchBytes(field = '') {\r\n let len = this.byteView[this.offset++]\r\n\r\n if (len == 254) {\r\n len = this.byteView[this.offset++] |\r\n this.byteView[this.offset++] << 8 |\r\n this.byteView[this.offset++] << 16\r\n }\r\n\r\n const bytes = this.byteView.subarray(this.offset, this.offset + len)\r\n this.offset += len\r\n\r\n // Padding\r\n while (this.offset % 4)\r\n this.offset++\r\n\r\n this.debug && console.log('<<<', bytesToHex(bytes), `${ field }:bytes`)\r\n\r\n return bytes\r\n }\r\n\r\n fetchIntBytes(bits, typed, field = '') {\r\n if (bits % 32)\r\n throw new Error(`Invalid bits: ${ bits}`)\r\n\r\n const len = bits / 8\r\n if (typed) {\r\n const result = this.byteView.subarray(this.offset, this.offset + len)\r\n this.offset += len\r\n return result\r\n }\r\n\r\n const bytes = []\r\n for (let i = 0; i < len; i++) {\r\n bytes.push(this.byteView[this.offset++])\r\n }\r\n\r\n this.debug && console.log('<<<', bytesToHex(bytes), `${ field }:int${ bits}`)\r\n\r\n return bytes\r\n }\r\n\r\n fetchRawBytes(len, typed, field = '') {\r\n if (len === false) {\r\n len = this.readInt(`${ field }_length`)\r\n if (len > this.byteView.byteLength)\r\n throw new Error(`Invalid raw bytes length: ${ len }, buffer len: ${ this.byteView.byteLength}`)\r\n }\r\n let bytes\r\n if (typed) {\r\n bytes = new Uint8Array(len)\r\n bytes.set(this.byteView.subarray(this.offset, this.offset + len))\r\n this.offset += len\r\n return bytes\r\n }\r\n\r\n bytes = []\r\n for (let i = 0; i < len; i++)\r\n bytes.push(this.byteView[this.offset++])\r\n\r\n this.debug && console.log('<<<', bytesToHex(bytes), field)\r\n\r\n return bytes\r\n }\r\n\r\n fetchObject(type, field) {\r\n switch (type) {\r\n case '#':\r\n case 'int':\r\n return this.fetchInt(field)\r\n case 'long':\r\n return this.fetchLong(field)\r\n case 'int128':\r\n return this.fetchIntBytes(128, false, field)\r\n case 'int256':\r\n return this.fetchIntBytes(256, false, field)\r\n case 'int512':\r\n return this.fetchIntBytes(512, false, field)\r\n case 'string':\r\n return this.fetchString(field)\r\n case 'bytes':\r\n return this.fetchBytes(field)\r\n case 'double':\r\n return this.fetchDouble(field)\r\n case 'Bool':\r\n return this.fetchBool(field)\r\n case 'true':\r\n return true\r\n }\r\n let fallback\r\n field = field || type || 'Object'\r\n const subpart = type.substr(0, 6)\r\n if (subpart === 'Vector' || subpart === 'vector') {\r\n if (type.charAt(0) === 'V') {\r\n const constructor = this.readInt(`${field}[id]`)\r\n const constructorCmp = uintToInt(constructor)\r\n\r\n if (constructorCmp === 0x3072cfa1) { // Gzip packed\r\n const compressed = this.fetchBytes(`${field}[packed_string]`)\r\n const uncompressed = gzipUncompress(compressed)\r\n const buffer = bytesToArrayBuffer(uncompressed)\r\n const newDeserializer = new Deserialization(buffer)\r\n\r\n return newDeserializer.fetchObject(type, field)\r\n }\r\n if (constructorCmp !== 0x1cb5c415)\r\n throw new Error(`Invalid vector constructor ${constructor}`)\r\n }\r\n const len = this.readInt(`${field}[count]`)\r\n const result = []\r\n if (len > 0) {\r\n const itemType = type.substr(7, type.length - 8) // for \"Vector<itemType>\"\r\n for (let i = 0; i < len; i++)\r\n result.push(this.fetchObject(itemType, `${field }[${ i }]`))\r\n }\r\n\r\n return result\r\n }\r\n\r\n const schema = this.mtproto\r\n ? mtApi\r\n : api\r\n let predicate = false\r\n let constructorData = false\r\n\r\n if (type.charAt(0) == '%') {\r\n const checkType = type.substr(1)\r\n for (let i = 0; i < schema.constructors.length; i++) {\r\n if (schema.constructors[i].type == checkType) {\r\n constructorData = schema.constructors[i]\r\n break\r\n }\r\n }\r\n if (!constructorData) {\r\n throw new Error(`Constructor not found for type: ${ type}`)\r\n }\r\n }\r\n else if (type.charAt(0) >= 97 && type.charAt(0) <= 122) {\r\n for (let i = 0; i < schema.constructors.length; i++) {\r\n if (schema.constructors[i].predicate == type) {\r\n constructorData = schema.constructors[i]\r\n break\r\n }\r\n }\r\n if (!constructorData)\r\n throw new Error(`Constructor not found for predicate: ${ type}`)\r\n } else {\r\n const constructor = this.readInt(`${field }[id]`)\r\n const constructorCmp = uintToInt(constructor)\r\n\r\n if (constructorCmp == 0x3072cfa1) { // Gzip packed\r\n const compressed = this.fetchBytes(`${field }[packed_string]`)\r\n const uncompressed = gzipUncompress(compressed)\r\n const buffer = bytesToArrayBuffer(uncompressed)\r\n const newDeserializer = new Deserialization(buffer)\r\n\r\n return newDeserializer.fetchObject(type, field)\r\n }\r\n\r\n let index = schema.constructorsIndex\r\n if (!index) {\r\n schema.constructorsIndex = index = {}\r\n for (let i = 0; i < schema.constructors.length; i++)\r\n index[schema.constructors[i].id] = i\r\n }\r\n let i = index[constructorCmp]\r\n if (i)\r\n constructorData = schema.constructors[i]\r\n\r\n fallback = false\r\n if (!constructorData && this.mtproto) {\r\n const schemaFallback = api\r\n for (i = 0; i < schemaFallback.constructors.length; i++) {\r\n if (schemaFallback.constructors[i].id == constructorCmp) {\r\n constructorData = schemaFallback.constructors[i]\r\n\r\n delete this.mtproto\r\n fallback = true\r\n break\r\n }\r\n }\r\n }\r\n if (!constructorData) {\r\n throw new Error(`Constructor not found: ${ constructor } ${ this.fetchInt() } ${ this.fetchInt()}`)\r\n }\r\n }\r\n\r\n predicate = constructorData.predicate\r\n\r\n const result = { '_': predicate }\r\n const overrideKey = (this.mtproto ? 'mt_' : '') + predicate\r\n\r\n if (this.override[overrideKey]) {\r\n this.override[overrideKey].apply(this, [result, `${field }[${ predicate }]`])\r\n } else {\r\n let param, isCond\r\n let condType, fieldBit\r\n let value\r\n const len = constructorData.params.length\r\n for (let i = 0; i < len; i++) {\r\n param = constructorData.params[i]\r\n type = param.type\r\n if (type === '#' && isNil(result.pFlags))\r\n result.pFlags = {}\r\n\r\n isCond = type.indexOf('?') !== -1\r\n if (isCond) {\r\n condType = type.split('?')\r\n fieldBit = condType[0].split('.')\r\n if (!(result[fieldBit[0]] & 1 << fieldBit[1]))\r\n continue\r\n type = condType[1]\r\n }\r\n\r\n value = this.fetchObject(type, `${field }[${ predicate }][${ param.name }]`)\r\n\r\n if (isCond && type === 'true')\r\n result.pFlags[param.name] = value\r\n else\r\n result[param.name] = value\r\n }\r\n }\r\n\r\n if (fallback)\r\n this.mtproto = true\r\n\r\n return result\r\n }\r\n\r\n getOffset() {\r\n return this.offset\r\n }\r\n\r\n fetchEnd() {\r\n if (this.offset !== this.byteView.length)\r\n throw new Error('Fetch end with non-empty buffer')\r\n return true\r\n }\r\n\r\n }\r\n\r\n return { Serialization, Deserialization }\r\n}\r\n\r\nexport default TL"]} |