Grasscutters/CrepeSR
2
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

remove dynamic runtime generated root

Browse Source
This commit is contained in:
TheLostTree 2022-08-05 01:28:37 -07:00
parent 91d842c1ec
commit c59789180b
2 changed files with 9 additions and 37 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

44
src/server/kcp/Packet.ts
View File

@ -1,11 +1,15 @@
import Logger, { VerboseLevel } from "../../util/Logger"; import Logger, { VerboseLevel } from "../../util/Logger";
import protobuf, { Root } from 'protobufjs'; import protobuf, { Root } from 'protobufjs';
import { resolve } from 'path'; import { resolve } from 'path';
import ProtoFactory from "../../util/ProtoFactory";
const c = new Logger("Packet") const c = new Logger("Packet")
export default class Packet { export default class Packet {
public readonly cmdid: number; public readonly cmdid: number;
public readonly data: Buffer; public readonly data: Buffer;
private static root: Root = Packet.getRoot();
public body: {} = {}; public body: {} = {};
public constructor(public readonly rawData: Buffer, public readonly protoName: string = "") { public constructor(public readonly rawData: Buffer, public readonly protoName: string = "") {
@ -15,9 +19,10 @@ export default class Packet {
this.cmdid = this.rawData.readUInt16BE(4); this.cmdid = this.rawData.readUInt16BE(4);
this.protoName = this.protoName || CmdID[this.cmdid]; this.protoName = this.protoName || CmdID[this.cmdid];
if (this.protoName) {
if(this.protoName){
try { try {
const Message = Packet.root.lookupTypeOrEnum(this.protoName); const Message = ProtoFactory.getType(this.protoName as PacketName);
this.body = Message.decode(this.data); this.body = Message.decode(this.data);
} catch (e) { } catch (e) {
c.warn(`Failed to decode ${this.protoName}`); c.warn(`Failed to decode ${this.protoName}`);
@ -37,37 +42,6 @@ export default class Packet {
return str.startsWith("01234567") && str.endsWith("89abcdef"); return str.startsWith("01234567") && str.endsWith("89abcdef");
} }
public static encode(name: PacketName, body: {}, customCmdId?: number): Packet | null {
try {
const cmdid = CmdID[name];
const Message = Packet.root.lookupTypeOrEnum(name);
const data = Buffer.from(Message.encode(body).finish());
const packet = Buffer.allocUnsafe(16 + data.length);
packet.writeUInt32BE(0x1234567);
packet.writeUint16BE(customCmdId || cmdid, 4);
packet.writeUint16BE(0, 6);
packet.writeUint32BE(data.length, 8);
data.copy(packet, 12);
packet.writeUint32BE(0x89abcdef, 12 + data.length);
return new Packet(packet, name);
} catch (e) {
c.error(e as Error);
return null;
}
}
private static getRoot(): Root {
try {
// Combined proto file with all definitions
return protobuf.loadSync(resolve(__dirname, `../../data/proto/StarRail.proto`));
} catch (e) {
c.error("Failed to load proto root! Server will not be able to function properly. Please check your data/ folder.");
c.error(e as Error, false);
process.exit(1);
}
}
public static fromEncodedBuffer(data: Buffer, name: PacketName): Buffer { public static fromEncodedBuffer(data: Buffer, name: PacketName): Buffer {
const cmdid = CmdID[name]; const cmdid = CmdID[name];
@ -80,8 +54,6 @@ export default class Packet {
packet.writeUint32BE(0x89abcdef, 12 + data.length); packet.writeUint32BE(0x89abcdef, 12 + data.length);
return packet; return packet;
} }
} }
export type PacketName = keyof typeof CmdID; export type PacketName = keyof typeof CmdID;

2
src/util/ProtoFactory.ts
View File

@ -8,7 +8,7 @@ const c = new Logger("ProtoFactory");
export class MessageType<T> { export class MessageType<T> {
"encode": (arg0: T) => protobufjs.Writer; "encode": (arg0: T) => protobufjs.Writer;
"fromPartial": (arg0: object) => T; "fromPartial": (arg0: object) => T;
// "decode": (input: protobufjs.Reader | Uint8Array, length?: number)=> T; "decode": (input: protobufjs.Reader | Uint8Array, length?: number)=> T;
// "fromJSON": (object: any)=>T; // "fromJSON": (object: any)=>T;
// "toJSON": (message: T)=> unknown // "toJSON": (message: T)=> unknown
//you can add more fields here from the generated types //you can add more fields here from the generated types