easylinux/cam-reverse
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move ticket to session

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This commit is contained in:
DavidVentura
2024-01-27 13:43:01 +01:00
parent 342ee29191
commit 88ac1107f5
3 changed files with 20 additions and 26 deletions
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handlers.ts
+10 -18
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@@ -1,7 +1,8 @@
import { Session } from "./server.js";
import { ControlCommands, Commands, CommandsByValue } from "./datatypes.js";
import { createWriteStream } from "node:fs";
import { SendStartVideo, SendUsrChk, create_P2pRdy } from "./impl.js";
import { Commands, CommandsByValue, ControlCommands } from "./datatypes.js";
import { create_P2pRdy, SendStartVideo, SendUsrChk } from "./impl.js";
import { Session } from "./server.js";
let image_fds = [];
let cur_image_index = 0;
@@ -36,7 +37,6 @@ export const handle_PunchPkt = (session: Session, dv: DataView) => {
};
export const createResponseForControlCommand = (session: Session, dv: DataView): DataView | null => {
const pkt_id = dv.add(6).readU16();
const start_type = dv.add(8).readU16(); // 0xa11 on control; data starts here on DATA pkt
const cmd_id = dv.add(10).readU16(); // 0x1120
@@ -46,20 +46,12 @@ export const createResponseForControlCommand = (session: Session, dv: DataView):
}
if (cmd_id == ControlCommands.ConnectUserAck) {
/*
00000000 f1 d0 00 18 d1 00 00 00 11 0a 20 11 0c 00 ff 00 .......... .....
00000010 00 00 00 00 34 54 63 4d fe 01 01 01 ....4TcM....
^^^^^^^^^^^
some kind of challenge
need to send the 0x3010
command with these 4 bytes 'encrypted'
*/
let challenge = [0, 0, 0, 0];
challenge[0] = dv.add(0x14).readU8();
challenge[1] = dv.add(0x15).readU8();
challenge[2] = dv.add(0x16).readU8();
challenge[3] = dv.add(0x17).readU8();
const buf = SendStartVideo(session.outgoingCommandId, challenge);
let c = new Uint8Array(dv.add(0x14).readByteArray(4).buffer);
session.ticket[0] = c[0] % 2 == 0 ? c[0] + 1 : c[0] - 1;
session.ticket[1] = c[1] % 2 == 0 ? c[1] + 1 : c[1] - 1;
session.ticket[2] = c[2] % 2 == 0 ? c[2] + 1 : c[2] - 1;
session.ticket[3] = c[3] % 2 == 0 ? c[3] + 1 : c[3] - 1;
const buf = SendStartVideo(session);
return buf;
}
};