funman300
0b66662525
24 transactions across 11 connections from a retail session: login, hub, one pack open, two squad saves, a quick-sell, with before/after state manifests. Raw .ofcap stays gitignored at 0600; the sanitized corpus is committed as adapter fixtures. TWO GAPS FOUND BY AUDITING THE OUTPUT, NOT BY TRUSTING THE SANITISER. 1. `POST /ut/auth` carries `macAddress` and `deviceId`. Session tokens were being redacted correctly and these were not. A committed fixture is a published fixture. 2. Then, with those fixed, the audit fired AGAIN on the file about to be committed: `GET .../phishing/trusteddevice?deviceId=...` puts the id in the QUERY STRING. Three input surfaces carry identifiers -- headers, JSON bodies, and query strings -- and the sanitiser knew about two. Both fixed in the tool rather than by editing the file, with a regression test and a mutation for the query path. AND A THIRD ARTEFACT MIX-UP, in the mutation harness itself. It reported the query-redaction mutation as SURVIVED while a hand-run of the same mutation killed it. Cause: the harness pointed at a stale scratchpad copy of the test that pre-dated the query assertion, so it was faithfully testing the mutated tool against a test that could not detect the mutation. That is the same class as the build guard checking the wrong binary and cargo reusing a binary compiled from mutated source -- the third instance today of measuring the wrong artifact. The harness now resolves ROOT from its own location and runs the COMMITTED test; the stale copy is deleted. Harness committed as scripts/mutate-utas-observe.py so this is repeatable rather than a thing that happened once in a scratch directory. 6/6 killed. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
583 lines
22 KiB
Python
Executable File
583 lines
22 KiB
Python
Executable File
#!/usr/bin/env python3
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"""Record real UTAS traffic between FIFA 17 and the Python oracle.
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openfut-utas-observe.py record --listen 0.0.0.0:8199 --upstream 127.0.0.1:8099 \
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--session captures/utas/session-001
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openfut-utas-observe.py parse --session captures/utas/session-001
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openfut-utas-observe.py snapshot --upstream 127.0.0.1:8099 --out before/state-manifest.json
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WHY THIS EXISTS
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---------------
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Porting UTAS needs the exact bytes of real requests AND real responses. The
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oracle's own log truncates bodies at ~200 chars, and raising that cap would mean
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editing the behavioural specification to make it easier to copy -- which is
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exactly backwards. A proxy gets the same evidence and leaves the oracle alone.
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Standalone on purpose: NOT built into the Python container. The same tool can
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later sit in front of a Rust UTAS host, so the identical captured request can be
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replayed against both and diffed.
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THE DESIGN RULE: TEE, DO NOT REBUILD
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------------------------------------
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UTAS is plaintext HTTP/1.1 served by `ThreadingHTTPServer`, so keep-alive,
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pipelining and chunked transfer are all possible. A proxy that parses a request
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and re-emits it can corrupt the traffic it exists to observe -- and a subtle
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corruption here would look like a UTAS bug, sending the investigation in exactly
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the wrong direction.
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So this copies bytes VERBATIM in both directions and writes a second copy to
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disk. Transactions are reconstructed later, offline, from that copy. A bug in
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the parser therefore spoils the record and never the session. This is the same
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reasoning that keeps the oracle unmodified: do not let the measuring apparatus
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change what is being measured.
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TWO LAYERS, LIKE THE BLAZE CAPTURES
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-----------------------------------
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raw/utas.ofcap exact bytes, mode 0600, gitignored
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sanitizer
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sanitized/transactions.jsonl repository-safe fixtures
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Raw captures are never normalised. Normalisation happens only when producing the
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committed fixture, and preserves exact bodies first, sanitises second.
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"""
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import argparse
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import base64
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import json
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import os
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import re
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import socket
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import sys
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import threading
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import time
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MAGIC = "OFCAP1"
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C2S = "c2s"
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S2C = "s2c"
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# ─────────────────────────────────────────────────────────── capture file ────
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class Capture:
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"""Append-only JSONL of raw byte chunks. One line per read().
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JSONL with base64 rather than a packed binary format: this is a research
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artefact that people will grep and eyeball, and the size cost is irrelevant
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next to being able to inspect it without a decoder. Base64 is an encoding,
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not a normalisation -- the bytes round-trip exactly.
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"""
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def __init__(self, path):
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self.path = path
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os.makedirs(os.path.dirname(path), exist_ok=True)
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# 0600 before anything is written: captures carry session tokens.
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fd = os.open(path, os.O_CREAT | os.O_WRONLY | os.O_APPEND, 0o600)
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self.f = os.fdopen(fd, "w")
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self.lock = threading.Lock()
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self._write({"magic": MAGIC, "started_unix": time.time()})
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def _write(self, obj):
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with self.lock:
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self.f.write(json.dumps(obj, sort_keys=True) + "\n")
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self.f.flush()
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def chunk(self, conn_id, direction, data, t0):
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self._write({
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"conn": conn_id,
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"dir": direction,
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"t": round(time.monotonic() - t0, 6),
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"unix": time.time(),
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"len": len(data),
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"b64": base64.b64encode(data).decode(),
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})
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def event(self, conn_id, kind, detail, t0):
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self._write({
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"conn": conn_id,
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"event": kind,
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"detail": detail,
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"t": round(time.monotonic() - t0, 6),
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"unix": time.time(),
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})
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def close(self):
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with self.lock:
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self.f.close()
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# ──────────────────────────────────────────────────────────────── record ────
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def pump(src, dst, cap, conn_id, direction, t0, done):
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"""Copy src->dst verbatim, teeing every chunk into the capture.
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Forward FIRST, record second: the client must never wait on our disk.
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"""
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try:
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while True:
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data = src.recv(65536)
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if not data:
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break
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try:
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dst.sendall(data)
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except OSError as e:
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cap.event(conn_id, "forward_failed", "%s %s" % (direction, e), t0)
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break
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cap.chunk(conn_id, direction, data, t0)
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except OSError as e:
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cap.event(conn_id, "read_failed", "%s %s" % (direction, e), t0)
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finally:
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# Half-close so the peer sees EOF in the same direction the original
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# did. Connection semantics are part of what is being captured.
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try:
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dst.shutdown(socket.SHUT_WR)
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except OSError:
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pass
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cap.event(conn_id, "eof", direction, t0)
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done.set()
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def handle(client, addr, upstream_addr, cap, conn_id, t0):
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cap.event(conn_id, "open", "%s:%d" % addr, t0)
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try:
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up = socket.create_connection(upstream_addr, timeout=30)
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except OSError as e:
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cap.event(conn_id, "upstream_failed", str(e), t0)
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client.close()
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return
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client.settimeout(None)
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up.settimeout(None)
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a, b = threading.Event(), threading.Event()
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t1 = threading.Thread(target=pump, args=(client, up, cap, conn_id, C2S, t0, a), daemon=True)
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t2 = threading.Thread(target=pump, args=(up, client, cap, conn_id, S2C, t0, b), daemon=True)
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t1.start(); t2.start()
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t1.join(); t2.join()
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for s in (client, up):
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try:
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s.close()
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except OSError:
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pass
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cap.event(conn_id, "close", "", t0)
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def cmd_record(args):
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lh, lp = args.listen.rsplit(":", 1)
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uh, up = args.upstream.rsplit(":", 1)
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session = os.path.abspath(args.session)
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cap = Capture(os.path.join(session, "raw", "utas.ofcap"))
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srv = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
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srv.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
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srv.bind((lh, int(lp)))
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srv.listen(64)
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t0 = time.monotonic()
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print("recording %s -> %s:%s into %s" % (args.listen, uh, up, cap.path), flush=True)
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print(" raw capture is mode 0600 and must stay out of git", flush=True)
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n = 0
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try:
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while True:
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client, addr = srv.accept()
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n += 1
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threading.Thread(
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target=handle,
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args=(client, addr, (uh, int(up)), cap, n, t0),
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daemon=True,
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).start()
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except KeyboardInterrupt:
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print("\nstopped after %d connection(s)" % n, flush=True)
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finally:
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cap.close()
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# ─────────────────────────────────────────────────────────────── parsing ────
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def read_capture(path):
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conns = {}
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with open(path) as f:
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for line in f:
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r = json.loads(line)
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if "magic" in r:
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continue
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c = conns.setdefault(r["conn"], {"c2s": bytearray(), "s2c": bytearray(),
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"events": [], "marks": {"c2s": [], "s2c": []}})
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if "b64" in r:
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data = base64.b64decode(r["b64"])
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c["marks"][r["dir"]].append((len(c[r["dir"]]), r["t"], r["unix"]))
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c[r["dir"]].extend(data)
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else:
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c["events"].append(r)
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return conns
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def split_messages(buf, is_response):
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"""Split an HTTP/1.1 byte stream into messages. Returns list of (head, body, end).
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Framing follows RFC 7230: Transfer-Encoding: chunked wins over
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Content-Length. A stream that cannot be framed stops the walk rather than
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guessing -- a wrong split would silently mis-attribute bodies.
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"""
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out, i = [], 0
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while True:
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sep = buf.find(b"\r\n\r\n", i)
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if sep < 0:
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break
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head = bytes(buf[i:sep])
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hs = head.decode("latin1")
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start = sep + 4
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te = re.search(r"(?im)^transfer-encoding:\s*(.+)$", hs)
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cl = re.search(r"(?im)^content-length:\s*(\d+)\s*$", hs)
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if te and "chunked" in te.group(1).lower():
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j, body = start, bytearray()
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while True:
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nl = buf.find(b"\r\n", j)
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if nl < 0:
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return out
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try:
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size = int(bytes(buf[j:nl]).split(b";")[0], 16)
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except ValueError:
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return out
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j = nl + 2
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if size == 0:
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j = buf.find(b"\r\n", j)
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j = (j + 2) if j >= 0 else len(buf)
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break
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body.extend(buf[j:j + size])
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j += size + 2
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out.append((head, bytes(body), j)); i = j
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elif cl:
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n = int(cl.group(1))
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end = start + n
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if end > len(buf):
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break
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out.append((head, bytes(buf[start:end]), end)); i = end
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else:
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status_no_body = is_response and re.match(r"HTTP/\d\.\d (1\d\d|204|304)", hs)
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if is_response and not status_no_body:
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# No framing header: the body runs to end-of-stream.
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out.append((head, bytes(buf[start:]), len(buf))); i = len(buf)
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break
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out.append((head, b"", start)); i = start
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return out
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def time_at(marks, offset):
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"""Wall/relative time of the chunk containing byte `offset`."""
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last = (0.0, 0.0)
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for pos, t, unix in marks:
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if pos > offset:
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break
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last = (t, unix)
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return last
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def cmd_parse(args):
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session = os.path.abspath(args.session)
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raw = os.path.join(session, "raw", "utas.ofcap")
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conns = read_capture(raw)
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out_dir = os.path.join(session, "sanitized")
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os.makedirs(out_dir, exist_ok=True)
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out_path = os.path.join(out_dir, "transactions.jsonl")
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total, skipped = 0, 0
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with open(out_path, "w") as out:
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for conn_id in sorted(conns):
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c = conns[conn_id]
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reqs = split_messages(c["c2s"], is_response=False)
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resps = split_messages(c["s2c"], is_response=True)
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if len(reqs) != len(resps):
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# Reported, never silently trimmed: an unmatched count means the
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# framing is not understood, and a quiet truncation would look
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# like the client simply asked for less.
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print(" conn %d: %d requests but %d responses -- pairing the common prefix"
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% (conn_id, len(reqs), len(resps)), file=sys.stderr)
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skipped += abs(len(reqs) - len(resps))
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keepalive = None
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for seq, ((rh, rb, rend), (sh, sb, send)) in enumerate(zip(reqs, resps), 1):
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rl = rh.split(b"\r\n")[0].decode("latin1")
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sl = sh.split(b"\r\n")[0].decode("latin1")
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m = re.match(r"(\S+)\s+(\S+)\s+(HTTP/\d\.\d)", rl)
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method, target, ver = (m.group(1), m.group(2), m.group(3)) if m else ("?", rl, "?")
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path, _, query = target.partition("?")
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st = re.match(r"HTTP/\d\.\d\s+(\d+)", sl)
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req_t, req_unix = time_at(c["marks"]["c2s"], rend - 1)
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res_t, res_unix = time_at(c["marks"]["s2c"], max(send - 1, 0))
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keepalive = len(reqs) > 1
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rec = {
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"conn": conn_id,
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"seq": seq,
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"t_request": req_t,
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"t_response": res_t,
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"elapsed_ms": round((res_t - req_t) * 1000, 3),
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"unix_request": req_unix,
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"request": {
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"method": method, "path": path, "query": query, "version": ver,
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"headers": header_list(rh),
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"body_b64": base64.b64encode(rb).decode(),
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"body_len": len(rb),
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},
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"response": {
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"status": int(st.group(1)) if st else None,
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"status_line": sl,
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"headers": header_list(sh),
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"body_b64": base64.b64encode(sb).decode(),
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"body_len": len(sb),
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},
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"connection": {
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"requests_on_this_connection": len(reqs),
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"keepalive_observed": keepalive,
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},
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}
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out.write(json.dumps(sanitize(rec), sort_keys=True) + "\n")
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total += 1
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os.chmod(out_path, 0o644)
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print("wrote %s (%d transactions across %d connections%s)"
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% (out_path, total, len(conns),
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"; %d unpaired messages reported above" % skipped if skipped else ""))
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return 0
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def header_list(head):
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"""Headers in RECEIVED ORDER, as a list of pairs. Order can be protocol-
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relevant and a dict would silently discard duplicates."""
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lines = head.decode("latin1").split("\r\n")[1:]
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out = []
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for l in lines:
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if not l:
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continue
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k, _, v = l.partition(":")
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out.append([k, v.strip()])
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return out
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|
|
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SECRET_HEADERS = {"authorization", "cookie", "set-cookie", "x-ut-sid", "easw-session-data-nucleus-id"}
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# Substring-matched against lowercased JSON keys. Extended after auditing the
|
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# first real corpus: session tokens were being redacted correctly, but the
|
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# client also sends hardware and device identifiers in `POST /ut/auth`, and a
|
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# committed fixture is a published fixture. Audit the output before publishing,
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# every time -- "the sanitiser handles it" is a belief until it is checked.
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SECRET_BODY_KEYS = (
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"sid", "token", "password", "answer", "secret",
|
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"macaddress", "deviceid", "authcode",
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)
|
|
|
|
|
|
def sanitize(rec):
|
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"""Repository-safe form. Bodies are preserved EXACTLY; only credentials go.
|
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|
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THREE input surfaces carry identifiers, not two. The first version handled
|
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headers and JSON bodies and was still about to publish a device id, because
|
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`GET /ut/game/fifa17/phishing/trusteddevice?deviceId=...` puts it in the
|
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QUERY STRING. Caught by auditing the output rather than by trusting the
|
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sanitiser -- which is the only reason it is a comment and not a leak.
|
|
|
|
Exact bodies first, sanitise second: the corpus is worthless if response
|
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payloads are reshaped, so nothing here touches structure -- it replaces
|
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known-secret header values and known-secret JSON keys, and records that it
|
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did so.
|
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"""
|
|
redacted = []
|
|
|
|
# Query string: same key rules as bodies.
|
|
q = rec["request"].get("query") or ""
|
|
if q:
|
|
parts, hit = [], False
|
|
for kv in q.split("&"):
|
|
k, eq, v = kv.partition("=")
|
|
if eq and any(x in k.lower() for x in SECRET_BODY_KEYS):
|
|
parts.append(k + "=<REDACTED>")
|
|
redacted.append("request.query." + k)
|
|
hit = True
|
|
else:
|
|
parts.append(kv)
|
|
if hit:
|
|
rec["request"]["query"] = "&".join(parts)
|
|
|
|
for side in ("request", "response"):
|
|
hs = rec[side]["headers"]
|
|
for pair in hs:
|
|
if pair[0].lower() in SECRET_HEADERS:
|
|
redacted.append("%s.%s" % (side, pair[0]))
|
|
pair[1] = "<REDACTED>"
|
|
body = base64.b64decode(rec[side]["body_b64"])
|
|
new, hit = redact_json(body)
|
|
if hit:
|
|
redacted.extend("%s.body.%s" % (side, h) for h in hit)
|
|
rec[side]["body_b64"] = base64.b64encode(new).decode()
|
|
rec[side]["body_len_original"] = len(body)
|
|
if redacted:
|
|
rec["redacted"] = sorted(set(redacted))
|
|
return rec
|
|
|
|
|
|
def redact_json(body):
|
|
if not body[:1] in (b"{", b"["):
|
|
return body, []
|
|
try:
|
|
doc = json.loads(body)
|
|
except Exception:
|
|
return body, []
|
|
hits = []
|
|
|
|
def walk(o):
|
|
if isinstance(o, dict):
|
|
for k in list(o):
|
|
if any(s in k.lower() for s in SECRET_BODY_KEYS) and isinstance(o[k], str):
|
|
o[k] = "<REDACTED>"
|
|
hits.append(k)
|
|
else:
|
|
walk(o[k])
|
|
elif isinstance(o, list):
|
|
for v in o:
|
|
walk(v)
|
|
|
|
walk(doc)
|
|
if not hits:
|
|
return body, []
|
|
return json.dumps(doc, sort_keys=True).encode(), hits
|
|
|
|
|
|
# ────────────────────────────────────────────────────────────── snapshot ────
|
|
# Read-only GETs only. `/openfut/account/sync` is deliberately NOT here: it is a
|
|
# POST that selects and writes an account, so using it as a snapshot would
|
|
# mutate the state the snapshot exists to observe.
|
|
#
|
|
# All six were confirmed to answer 200 without a session token.
|
|
SNAPSHOT_ROUTES = [
|
|
("credits", "/ut/game/fifa17/user/credits"),
|
|
("userMassInfo", "/ut/game/fifa17/userMassInfo"),
|
|
("unassigned", "/ut/game/fifa17/purchased/items"),
|
|
("activeSquad", "/ut/game/fifa17/squad/active"),
|
|
("tradePile", "/ut/game/fifa17/tradePile"),
|
|
("accountInfo", "/ut/game/fifa17/user/accountinfo"),
|
|
]
|
|
|
|
|
|
def http_get(host, port, path):
|
|
s = socket.create_connection((host, int(port)), timeout=10)
|
|
s.sendall(("GET %s HTTP/1.1\r\nHost: %s:%s\r\nConnection: close\r\n\r\n"
|
|
% (path, host, port)).encode())
|
|
buf = b""
|
|
while True:
|
|
d = s.recv(65536)
|
|
if not d:
|
|
break
|
|
buf += d
|
|
s.close()
|
|
head, _, body = buf.partition(b"\r\n\r\n")
|
|
line = head.split(b"\r\n")[0].decode("latin1")
|
|
status = int(line.split()[1]) if len(line.split()) > 1 else None
|
|
return status, body
|
|
|
|
|
|
def cmd_snapshot(args):
|
|
"""A state manifest for pairing before/after around a capture session.
|
|
|
|
A summary plus a hash, not a database dump. The named fields are what a
|
|
human reads; the sha256 of each full body is the safety net, because a
|
|
summary can only report changes in fields somebody thought to list. If the
|
|
hash moves and no field does, the summary is incomplete -- and that is
|
|
itself a finding rather than a silent miss.
|
|
|
|
Raw bodies are written alongside at mode 0600 so a real diff is possible
|
|
later without re-running the session.
|
|
"""
|
|
import hashlib
|
|
uh, up = args.upstream.rsplit(":", 1)
|
|
out_path = os.path.abspath(args.out)
|
|
raw_dir = os.path.join(os.path.dirname(out_path), "bodies")
|
|
os.makedirs(raw_dir, exist_ok=True)
|
|
|
|
man = {"unix": time.time(), "upstream": args.upstream, "routes": {}}
|
|
for name, path in SNAPSHOT_ROUTES:
|
|
try:
|
|
status, body = http_get(uh, up, path)
|
|
except Exception as e:
|
|
# Recorded as an error, never omitted: a missing section must not
|
|
# be mistakable for an empty one.
|
|
man["routes"][name] = {"error": str(e)}
|
|
continue
|
|
bp = os.path.join(raw_dir, name + ".json")
|
|
fd = os.open(bp, os.O_CREAT | os.O_WRONLY | os.O_TRUNC, 0o600)
|
|
with os.fdopen(fd, "wb") as f:
|
|
f.write(body)
|
|
man["routes"][name] = {
|
|
"status": status,
|
|
"body_len": len(body),
|
|
"sha256": hashlib.sha256(body).hexdigest(),
|
|
"fields": extract(name, body),
|
|
}
|
|
|
|
os.makedirs(os.path.dirname(out_path), exist_ok=True)
|
|
with open(out_path, "w") as f:
|
|
json.dump(man, f, indent=2, sort_keys=True)
|
|
f.write("\n")
|
|
print("wrote %s" % out_path)
|
|
for k, v in man["routes"].items():
|
|
print(" %-13s %s" % (k, v.get("fields", v)))
|
|
return 0
|
|
|
|
|
|
def extract(name, body):
|
|
"""Named fields per route. Unknown shapes report what they can rather than
|
|
raising -- the hash still covers everything."""
|
|
try:
|
|
d = json.loads(body)
|
|
except Exception:
|
|
return {"unparsed_len": len(body)}
|
|
f = {}
|
|
if name == "credits":
|
|
f["credits"] = d.get("credits")
|
|
elif name == "userMassInfo":
|
|
ui = d.get("userInfo", {})
|
|
for k in ("personaId", "clubName", "clubAbbr", "trophies"):
|
|
if k in ui:
|
|
f[k] = ui[k]
|
|
for k, v in d.items():
|
|
if isinstance(v, list):
|
|
f[k + ".count"] = len(v)
|
|
elif name == "unassigned":
|
|
f["itemData.count"] = len(d.get("itemData", []))
|
|
elif name == "activeSquad":
|
|
f["id"] = d.get("id")
|
|
f["formation"] = d.get("formation")
|
|
players = d.get("players", [])
|
|
f["players.count"] = len(players)
|
|
# Slot -> item id, so a two-player swap is visible in the diff.
|
|
f["slots"] = {
|
|
str(p.get("index", i)): (p.get("itemData") or {}).get("id")
|
|
for i, p in enumerate(players)
|
|
}
|
|
elif name == "tradePile":
|
|
f["auctionInfo.count"] = len(d.get("auctionInfo", []))
|
|
elif name == "accountInfo":
|
|
f["keys"] = sorted(d.keys()) if isinstance(d, dict) else None
|
|
return f
|
|
|
|
|
|
def main():
|
|
ap = argparse.ArgumentParser(description=__doc__,
|
|
formatter_class=argparse.RawDescriptionHelpFormatter)
|
|
sub = ap.add_subparsers(dest="cmd", required=True)
|
|
|
|
r = sub.add_parser("record")
|
|
r.add_argument("--listen", required=True)
|
|
r.add_argument("--upstream", required=True)
|
|
r.add_argument("--session", required=True)
|
|
r.set_defaults(fn=cmd_record)
|
|
|
|
p = sub.add_parser("parse")
|
|
p.add_argument("--session", required=True)
|
|
p.set_defaults(fn=cmd_parse)
|
|
|
|
s = sub.add_parser("snapshot")
|
|
s.add_argument("--upstream", required=True)
|
|
s.add_argument("--out", required=True)
|
|
s.set_defaults(fn=cmd_snapshot)
|
|
|
|
args = ap.parse_args()
|
|
return args.fn(args) or 0
|
|
|
|
|
|
if __name__ == "__main__":
|
|
sys.exit(main())
|