Ryan Malloy
9a024181ae
Project scaffold (uv, pyproject.toml CalVer 2026.5.10, ruff, pytest, mypy
strict config, MIT, README, .gitignore protecting any .pca / panel keys).
Library primitives (src/omni_pca/):
- crypto.py AES-128-ECB + per-block XOR seq pre-whitening, session-key
derivation (CK[0:11] || (CK[11:16] XOR SessionID))
- opcodes.py Byte-exact PacketType (12), v1 MessageType (104),
v2 MessageType (83), ConnectionType, ProtocolVersion
- packet.py Outer Packet dataclass with encode/decode
- message.py Inner Message + CRC-16/MODBUS, helpers for v1/v2
- pca_file.py Borland LCG XOR cipher, PcaReader, .pca + .CFG parsers
(KEY_PC01 = 0x14326573, KEY_EXPORT = 0x17569237 — fixed
from initial typo; verified via test_keys_match_decompiled)
- __main__.py CLI: 'omni-pca decode-pca <file> --field {host,port,...}'
PII opt-in via --include-pii
49 tests pass, 1 skipped (live fixture). Ruff clean.
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22 lines
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MIT License
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Copyright (c) 2026 Ryan Malloy
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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