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Fix manufacturer string when terminating with both \x00 and \xFF
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@puddly
puddly committed Jul 23, 2024
1 parent c4578a0 commit 1464e7a
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Showing 2 changed files with 60 additions and 87 deletions.
10 changes: 6 additions & 4 deletions bellows/ezsp/__init__.py
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Original file line number Diff line number Diff line change
Expand Up @@ -349,13 +349,15 @@ async def get_board_info(
(value,) = await self.getMfgToken(tokenId=token)
LOGGER.debug("Read %s token: %s", token.name, value)

# Tokens are fixed-length and initially filled with \xFF
result = value.rstrip(b"\xFF").split(b"\x00", 1)[0]
# Tokens are fixed-length and initially filled with \xFF but also can end
# with \x00
while value.endswith((b"\xFF", b"\x00")):
value = value.rstrip(b"\xFF").rstrip(b"\x00")

try:
result = result.decode("utf-8")
result = value.decode("utf-8")
except UnicodeDecodeError:
result = "0x" + result.hex().upper()
result = "0x" + value.hex().upper()

if not result:
result = None
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137 changes: 54 additions & 83 deletions tests/test_ezsp.py
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Original file line number Diff line number Diff line change
@@ -1,3 +1,5 @@
from __future__ import annotations

import asyncio
import functools
import logging
Expand Down Expand Up @@ -316,12 +318,58 @@ async def test_ezsp_newer_version(ezsp_f):
await ezsp_f.version()


async def test_board_info(ezsp_f):
@pytest.mark.parametrize(
(
"mfg_board_name",
"mfg_string",
"value_version_info",
"expected",
),
[
(
(b"\xfe\xff\xff\xff",),
(b"Manufacturer\xff\xff\xff",),
(t.EmberStatus.SUCCESS, b"\x01\x02\x03\x04\x05\x06"),
("Manufacturer", "0xFE", "3.4.5.6 build 513"),
),
(
(b"\xfe\xff\xff\xff",),
(b"Manufacturer\xff\xff\xff",),
(t.EmberStatus.ERR_FATAL, b"\x01\x02\x03\x04\x05\x06"),
("Manufacturer", "0xFE", None),
),
(
(b"SkyBlue v0.1\x00\xff\xff\xff",),
(b"Nabu Casa\x00\xff\xff\xff\xff\xff\xff",),
(t.EmberStatus.SUCCESS, b"\xbf\x00\x07\x01\x00\x00\xaa"),
("Nabu Casa", "SkyBlue v0.1", "7.1.0.0 build 191"),
),
(
(b"\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff",),
(b"\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff",),
(t.EmberStatus.SUCCESS, b"\xbf\x00\x07\x01\x00\x00\xaa"),
(None, None, "7.1.0.0 build 191"),
),
(
(b"\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff",),
(b"\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\x00\x00",),
(t.EmberStatus.SUCCESS, b")\x01\x06\n\x03\x00\xaa"),
(None, None, "6.10.3.0 build 297"),
),
],
)
async def test_board_info(
ezsp_f,
mfg_board_name: bytes,
mfg_string: bytes,
value_version_info: tuple[t.EmberStatus, bytes],
expected: tuple[str | None, str | None, str],
):
"""Test getting board info."""

def cmd_mock(config):
async def replacement(command_name, tokenId=None, valueId=None):
return tuple(config[command_name, tokenId or valueId])
return config[command_name, tokenId or valueId]

return replacement

Expand All @@ -330,92 +378,15 @@ async def replacement(command_name, tokenId=None, valueId=None):
"_command",
new=cmd_mock(
{
("getMfgToken", t.EzspMfgTokenId.MFG_BOARD_NAME): (
b"\xfe\xff\xff\xff",
),
("getMfgToken", t.EzspMfgTokenId.MFG_STRING): (
b"Manufacturer\xff\xff\xff",
),
("getValue", t.EzspValueId.VALUE_VERSION_INFO): (
t.EmberStatus.SUCCESS,
b"\x01\x02\x03\x04\x05\x06",
),
}
),
):
mfg, brd, ver = await ezsp_f.get_board_info()

assert mfg == "Manufacturer"
assert brd == "0xFE"
assert ver == "3.4.5.6 build 513"

with patch.object(
ezsp_f,
"_command",
new=cmd_mock(
{
("getMfgToken", t.EzspMfgTokenId.MFG_BOARD_NAME): (
b"\xfe\xff\xff\xff",
),
("getMfgToken", t.EzspMfgTokenId.MFG_STRING): (
b"Manufacturer\xff\xff\xff",
),
("getValue", t.EzspValueId.VALUE_VERSION_INFO): (
t.EmberStatus.ERR_FATAL,
b"\x01\x02\x03\x04\x05\x06",
),
}
),
):
mfg, brd, ver = await ezsp_f.get_board_info()

assert mfg == "Manufacturer"
assert brd == "0xFE"
assert ver is None

with patch.object(
ezsp_f,
"_command",
new=cmd_mock(
{
("getMfgToken", t.EzspMfgTokenId.MFG_BOARD_NAME): (
b"SkyBlue v0.1\x00\xff\xff\xff",
),
("getMfgToken", t.EzspMfgTokenId.MFG_STRING): (
b"Nabu Casa\x00\xff\xff\xff\xff\xff\xff",
),
("getValue", t.EzspValueId.VALUE_VERSION_INFO): (
t.EmberStatus.SUCCESS,
b"\xbf\x00\x07\x01\x00\x00\xaa",
),
}
),
):
mfg, brd, ver = await ezsp_f.get_board_info()

assert mfg == "Nabu Casa"
assert brd == "SkyBlue v0.1"
assert ver == "7.1.0.0 build 191"

with patch.object(
ezsp_f,
"_command",
new=cmd_mock(
{
("getMfgToken", t.EzspMfgTokenId.MFG_BOARD_NAME): (b"\xff" * 16,),
("getMfgToken", t.EzspMfgTokenId.MFG_STRING): (b"\xff" * 16,),
("getValue", t.EzspValueId.VALUE_VERSION_INFO): (
t.EmberStatus.SUCCESS,
b"\xbf\x00\x07\x01\x00\x00\xaa",
),
("getMfgToken", t.EzspMfgTokenId.MFG_BOARD_NAME): mfg_board_name,
("getMfgToken", t.EzspMfgTokenId.MFG_STRING): mfg_string,
("getValue", t.EzspValueId.VALUE_VERSION_INFO): value_version_info,
}
),
):
mfg, brd, ver = await ezsp_f.get_board_info()

assert mfg is None
assert brd is None
assert ver == "7.1.0.0 build 191"
assert (mfg, brd, ver) == expected


async def test_pre_permit(ezsp_f):
Expand Down

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