Files
reverse-engineering-anything/tests/fixtures/pcap/offlineHttpCapture.ts
T
morluto 60149282fc test: strengthen integration oracles and verification (#8295)
* test: strengthen integration oracles and verification

* test: bound lifecycle gates and strengthen workflow checks

* test: verify complete paged and extracted results

* test: preserve bytecode and cancellation evidence

* test: strengthen retained evidence and fixture cleanup

* test: require cross-projection bridge identities

* test: retain fixture owners through cleanup failures

* test: verify graph examples and project selectors

* test: tighten provider and lifecycle regressions

* test: consolidate hex coverage and bound cutter cleanup

* test: bound subprocess output waits and strengthen graph checks

* test: check mcp recovery and preserve cleanup owners

* test: verify structured mcp argument failures

* test: preserve artifact cleanup and gdb limit evidence

* test: preserve evidence identities and bound provider gates

* test: retain browser and comparison cleanup owners

* test: bound startup and strengthen fixture oracles

* test: bound lifecycle gates and verify recovered evidence

* test: verify public outcomes and lifecycle ownership

* test: assert precise evidence and release lifecycle gates

* test: verify selected facts and bound cleanup waits

* test: check retained evidence and decoded records

* test: verify final reports and retain cleanup ownership

* test: bound reviewed startup gates and retain cleanup

* test: verify PE errors and preserve MCP cleanup

* test: preserve MCP fixture cleanup ownership

* test: release provider gates before late startup
2026-11-01 00:15:28 +08:00

61 lines
2.2 KiB
TypeScript

/** Owned offline Ethernet/IPv4/TCP fixture; no traffic or external input. */
export const offlineHttpCapture = (
uri: string,
packets = 1,
host: string | null = "example.test",
): Buffer => {
if (!Number.isSafeInteger(packets) || packets < 1 || packets > 40_000)
throw new RangeError("Offline test captures support 1..40000 packets");
const payload = Buffer.from(
`GET ${uri} HTTP/${host === null ? "1.0" : "1.1"}\r\n${host === null ? "" : `Host: ${host}\r\n`}Connection: close\r\n\r\n`,
);
const checksum = (bytes: Buffer): number => {
let total = 0;
for (let index = 0; index < bytes.length; index += 2)
total += ((bytes[index] ?? 0) << 8) | (bytes[index + 1] ?? 0);
while (total >>> 16) total = (total & 0xffff) + (total >>> 16);
return ~total & 0xffff;
};
const source = Buffer.from([192, 0, 2, 1]);
const destination = Buffer.from([198, 51, 100, 2]);
const tcp = Buffer.alloc(20);
tcp.writeUInt16BE(44000, 0);
tcp.writeUInt16BE(80, 2);
tcp.writeUInt32BE(1, 4);
tcp.writeUInt32BE(1, 8);
tcp.writeUInt16BE(0x5018, 12);
tcp.writeUInt16BE(65535, 14);
const pseudo = Buffer.concat([
source,
destination,
Buffer.from([0, 6, 0, 0]),
]);
pseudo.writeUInt16BE(tcp.length + payload.length, 10);
tcp.writeUInt16BE(checksum(Buffer.concat([pseudo, tcp, payload])), 16);
const ip = Buffer.alloc(20);
ip[0] = 0x45;
ip.writeUInt16BE(ip.length + tcp.length + payload.length, 2);
ip.writeUInt16BE(1, 4);
ip[8] = 64;
ip[9] = 6;
source.copy(ip, 12);
destination.copy(ip, 16);
ip.writeUInt16BE(checksum(ip), 10);
const ethernet = Buffer.from([2, 0, 0, 0, 0, 2, 2, 0, 0, 0, 0, 1, 8, 0]);
const frame = Buffer.concat([ethernet, ip, tcp, payload]);
const record = Buffer.alloc(16 + frame.length);
record.writeUInt32LE(1_700_000_000, 0);
record.writeUInt32LE(frame.length, 8);
record.writeUInt32LE(frame.length, 12);
frame.copy(record, 16);
const capture = Buffer.alloc(24 + packets * record.length);
capture.writeUInt32LE(0xa1b2c3d4, 0);
capture.writeUInt16LE(2, 4);
capture.writeUInt16LE(4, 6);
capture.writeUInt32LE(65535, 16);
capture.writeUInt32LE(1, 20);
for (let index = 0; index < packets; index++)
record.copy(capture, 24 + index * record.length);
return capture;
};