JMR-devandClaude Opus 4.8
ba96df081f
Add a pytest suite covering the pure logic of the DeDRM and Obok plugins.
Because the plugins normally run inside calibre and use intra-package
imports, tests/dedrm_test_utils.py sets up an import shim (plugin dirs on
sys.path, a minimal calibre stub, and a synthetic `dedrm` package) so the
modules can be imported and exercised standalone.
Coverage:
- alfcrypto: PC1 and Topaz cipher round-trips, PBKDF2 vs hashlib.
- kgenpids / kindlepid: PID encoding, bit-field extraction, device-PID
and serial-PID known vectors, CRC32.
- mobidedrm: PC1 round-trip, trailing-data sizing, bad-key handling.
- ineptpdf / ineptepub: nunpack and PKCS7 unpad.
- topazextract: encoded number/string parsing, plus a regression test
that a malicious header tag ("../../evil") cannot escape the output
directory (covers the path-traversal fix).
- obok: unpad, hash-key table, SafeUnbuffered str/bytes handling.
- utilities / argv_utils: uStrCmp normalisation, unicode_argv.
- erdr2pml: deXOR/sanitiseFileName, skipped on Python 3.13+ where the
module's `cgi` import is unavailable.
Run with `poetry install` then `poetry run pytest`. 36 pass, 2 skip on
Python 3.13+.
Note: this surfaced two dead-code modules that are broken on Python 3
(aescbc's pure-Python AES and kgenpids.decode, neither on a live path,
since the real crypto goes through pycryptodome); left as-is here.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
24 lines
535 B
Python
24 lines
535 B
Python
"""Tests for kindlepid PID/serial helpers."""
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import dedrm_test_utils as U
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kp = U.load("kindlepid", package="dedrm")
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def test_letters_charset():
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assert kp.letters == b"ABCDEFGHIJKLMNPQRSTUVWXYZ123456789"
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def test_checksum_pid_appends_two_chars():
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pid = kp.checksumPid(b"12345678")
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assert pid == b"12345678EL"
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assert len(pid) == 10
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def test_pid_from_serial_known_vector():
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assert kp.pidFromSerial(b"B00212345678", 8) == b"VBKTRX7Q"
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def test_crc32_known_vector():
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assert kp.crc32(b"test") == 4181434640
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