Replaces LICENSE (GPLv3 -> AGPLv3) and prepends
`SPDX-License-Identifier: AGPL-3.0-or-later` to every source file
across decnet/, decnet_web/, tests/, scripts/, and tools/.
Rationale: closes the GPLv3 ASP loophole so any party operating a
modified DECNET as a network service must offer their modified
source. Personal copyright (Samuel Paschuan) + inbound=outbound
contributions make a future unilateral relicense infeasible.
- LICENSE: full AGPL-3.0 text (gnu.org/licenses/agpl-3.0.txt)
- COPYRIGHT: project copyright notice
- tools/add_spdx_headers.py: idempotent header injector
(shebang- and PEP 263-aware)
Touches 1565 source files (.py, .ts, .tsx, .js, .jsx, .css, .sh).
No behavior change; comments only.
Adds per-mint nonce gating, structural shape validation, mint UUID
consistency checks, and a per-(token, IP) rate limiter to the canary
worker so attackers who extract a canary from a decky filesystem cannot
poison fingerprint forensics by replaying or forging ?d= submissions.
Changes:
base.py
fingerprint_nonce: Optional[str] added to CanaryArtifact so generators
can surface the nonce to the cultivator without coupling the generator
directly to DB code.
obfuscator.py
nonce_for(callback_token, mint_uuid): HMAC-SHA256 keyed on
DECNET_CANARY_FINGERPRINT_SECRET, truncated to 16 hex chars.
FingerprintSecretMissing raised at mint time if env var is unset.
render_fingerprint_js() now accepts nonce= and substitutes MINT_NONCE.
fingerprint_payload.js
New MINT_NONCE placeholder. Appended as &k= on all beacon URLs (bare-open,
single-shot, chunked). Using &k= avoids colliding with &n= (chunk total).
fingerprint_html.py / fingerprint_svg.py
Derive nonce via nonce_for() and pass to render_fingerprint_js(). Set
artifact.fingerprint_nonce so the cultivator can persist it.
cultivator.py
Passes fingerprint_nonce into create_canary_token() when present on the
artifact; NULL for all non-fingerprint generators.
canary.py (model)
fingerprint_nonce: Optional[str] = Field(default=None, max_length=16)
added to CanaryToken. None for non-fingerprint tokens.
worker.py
_extract_fingerprint now returns (meta_dict, parsed_fp) tuple.
_record_hit accepts parsed_fp + raw_nonce and runs 4 layers after
token lookup: nonce match, shape check, mint UUID consistency, rate limit.
Each failure sets _fp_invalid_* flag and drops structured _fp.
Trigger row always lands regardless.
tests/canary/conftest.py
Session-scoped autouse fixture sets DECNET_CANARY_FINGERPRINT_SECRET so
fingerprint generator and worker tests work offline.
tests
5 new worker HTTP tests and 2 new generator tests covering each
validation layer.
Adds the load-bearing primitives for obfuscated browser-fingerprinting
canaries. Step 3 (HTML/SVG generators) and step 4 (worker-side
fingerprint ingestion) build on top of these.
* decnet/canary/obfuscator.py - javascript-obfuscator wrapper. Seed
and polymorphic config bits both derive from the callback token, so
output is byte-identical for the same mint (preserving the generator
determinism contract from base.py) and structurally distinct across
mints.
* decnet/canary/fingerprint_payload.js - port of canary-self-test.html
with the rendering UI stripped. Two placeholders (BEACON_URL,
MINT_UUID) substituted before obfuscation. MVP beacon strategy:
bare-open GET pixel first, then base64url-encoded fingerprint as
query params on subsequent GETs (chunked above ~6KB) so the existing
worker records hits before step-4 lands.
* decnet/canary/_obfuscate_helper.js - Node subprocess helper that
reads code+options JSON from stdin and writes obfuscated JS to
stdout. Vendored javascript-obfuscator under decnet/canary/.
* tests/canary/test_obfuscator.py - determinism, per-mint divergence,
template substitution, Node syntax check, error path.
