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|
# pylint: disable=missing-module-docstring
# pylint: disable=invalid-name
# pylint: disable=missing-function-docstring
import re
import textwrap
import pytest
from smartcard.ATR import ATR
from smartcard.Exceptions import SmartcardException
from smartcard.util import toBytes
def test_atr1(capsys):
atr = [0x3F, 0x65, 0x25, 0x00, 0x2C, 0x09, 0x69, 0x90, 0x00]
data_out = textwrap.dedent(
"""\
TB1: 25
TC1: 0
supported protocols T=0
T=0 supported: True
T=1 supported: False
\tclock rate conversion factor: 372
\tbit rate adjustment factor: 1
\tmaximum programming current: 50
\tprogramming voltage: 30
\tguard time: 0
nb of interface bytes: 2
nb of historical bytes: 5
"""
)
a = ATR(atr)
with pytest.warns(DeprecationWarning, match=re.escape("print(ATR.render())")):
a.dump()
stdout, _ = capsys.readouterr()
assert stdout == data_out
def test_atr2(capsys):
atr = [0x3F, 0x65, 0x25, 0x08, 0x93, 0x04, 0x6C, 0x90, 0x00]
data_out = textwrap.dedent(
"""\
TB1: 25
TC1: 8
supported protocols T=0
T=0 supported: True
T=1 supported: False
\tclock rate conversion factor: 372
\tbit rate adjustment factor: 1
\tmaximum programming current: 50
\tprogramming voltage: 30
\tguard time: 8
nb of interface bytes: 2
nb of historical bytes: 5
"""
)
a = ATR(atr)
with pytest.warns(DeprecationWarning, match=re.escape("print(ATR.render())")):
a.dump()
stdout, _ = capsys.readouterr()
assert stdout == data_out
def test_atr3(capsys):
atr = [0x3B, 0x16, 0x94, 0x7C, 0x03, 0x01, 0x00, 0x00, 0x0D]
data_out = textwrap.dedent(
"""\
TA1: 94
supported protocols T=0
T=0 supported: True
T=1 supported: False
\tclock rate conversion factor: 512
\tbit rate adjustment factor: 8
\tmaximum programming current: 50
\tprogramming voltage: 5
\tguard time: None
nb of interface bytes: 1
nb of historical bytes: 6
"""
)
a = ATR(atr)
with pytest.warns(DeprecationWarning, match=re.escape("print(ATR.render())")):
a.dump()
stdout, _ = capsys.readouterr()
assert stdout == data_out
def test_atr4(capsys):
atr = [0x3B, 0x65, 0x00, 0x00, 0x9C, 0x11, 0x01, 0x01, 0x03]
data_out = textwrap.dedent(
"""\
TB1: 0
TC1: 0
supported protocols T=0
T=0 supported: True
T=1 supported: False
\tclock rate conversion factor: 372
\tbit rate adjustment factor: 1
\tmaximum programming current: 25
\tprogramming voltage: 5
\tguard time: 0
nb of interface bytes: 2
nb of historical bytes: 5
"""
)
a = ATR(atr)
with pytest.warns(DeprecationWarning, match=re.escape("print(ATR.render())")):
a.dump()
stdout, _ = capsys.readouterr()
assert stdout == data_out
def test_atr5(capsys):
atr = [0x3B, 0xE3, 0x00, 0xFF, 0x81, 0x31, 0x52, 0x45, 0xA1, 0xA2, 0xA3, 0x1B]
data_out = textwrap.dedent(
"""\
TB1: 0
TC1: ff
TD1: 81
TD2: 31
TA3: 52
TB3: 45
supported protocols T=1
T=0 supported: False
T=1 supported: True
checksum: 27
\tclock rate conversion factor: 372
\tbit rate adjustment factor: 1
\tmaximum programming current: 25
\tprogramming voltage: 5
\tguard time: 255
nb of interface bytes: 6
nb of historical bytes: 3
"""
)
a = ATR(atr)
with pytest.warns(DeprecationWarning, match=re.escape("print(ATR.render())")):
a.dump()
stdout, _ = capsys.readouterr()
assert stdout == data_out
def test_atr6(capsys):
atr = [0x3B, 0xE5, 0x00, 0x00, 0x81, 0x21, 0x45, 0x9C, 0x10, 0x01, 0x00, 0x80, 0x0D]
data_out = textwrap.dedent(
"""\
TB1: 0
TC1: 0
TD1: 81
TD2: 21
TB3: 45
supported protocols T=1
T=0 supported: False
T=1 supported: True
checksum: 13
\tclock rate conversion factor: 372
\tbit rate adjustment factor: 1
\tmaximum programming current: 25
\tprogramming voltage: 5
\tguard time: 0
nb of interface bytes: 5
nb of historical bytes: 5
"""
)
a = ATR(atr)
with pytest.warns(DeprecationWarning, match=re.escape("print(ATR.render())")):
a.dump()
stdout, _ = capsys.readouterr()
assert stdout == data_out
@pytest.mark.parametrize(
"ts",
(
pytest.param("0x42", id="numeric"),
pytest.param("0xaa", id="lowercase"),
pytest.param("0x00", id="zero padding"),
),
)
def test_invalid_ts(ts: str):
atr = [int(ts[2:], 16), 0x00]
with pytest.raises(SmartcardException, match=f"invalid TS {ts}"):
ATR(atr)
def test_atr_get():
atr = "3B F2 95 12 34 01 36 06"
a = ATR(toBytes(atr))
assert a.getTA1() == 0x95
assert a.getTB1() == 0x12
assert a.getTC1() == 0x34
assert a.getTD1() == 0x01
assert a.getHistoricalBytes() == [0x36, 0x06]
assert a.isT15Supported() is False
assert str(a) == atr
@pytest.mark.parametrize(
"field, expected_length",
(
("clockrateconversion", 16),
("bitratefactor", 16),
),
)
def test_map_lengths(field, expected_length):
"""Verify ATR class fields have expected lengths.
This doesn't validate values, but simply ensures the lengths match expectations.
"""
assert len(getattr(ATR, field)) == expected_length
@pytest.mark.parametrize(
"atr,",
(
pytest.param([], id="ATR is too short (0 bytes)"),
pytest.param([0x3B], id="ATR is too short (1 byte, valid TS)"),
),
)
def test_invalid_atr_lengths(atr: list[int]):
"""Verify that short ATRs raise exceptions."""
with pytest.raises(SmartcardException, match="at least 2 bytes"):
ATR(atr)
@pytest.mark.parametrize("ts", (0x3B, 0x3F))
def test_2_bytes(ts):
"""Verify that a completely empty ATR parses well."""
atr = ATR([ts, 0b0000_0000])
# |||| `-- no historical bytes
# |||`-- no TA
# ||`-- no TB
# |`-- no TC
# `-- no TD
assert atr.getTA1() is None
assert atr.getTB1() is None
assert atr.II is None
assert atr.PI1 is None
assert atr.getTC1() is None
assert atr.getTD1() is None
assert atr.getChecksum() is None
assert atr.getGuardTime() is None
assert atr.getHistoricalBytesCount() == 0
assert atr.getHistoricalBytes() == []
assert atr.getInterfaceBytesCount() == 0
# Default values
assert atr.getBitRateFactor() == 1
assert atr.getClockRateConversion() == 372
assert atr.getProgrammingCurrent() == 50
assert atr.getProgrammingVoltage() == 5
# Protocols
assert len(atr.getSupportedProtocols()) == 1
assert "T=0" in atr.getSupportedProtocols()
assert atr.isT0Supported() is True
assert atr.isT1Supported() is False
assert atr.isT15Supported() is False
# Rendering
expected_rendering = textwrap.dedent(
"""\
supported protocols T=0
T=0 supported: True
T=1 supported: False
\tclock rate conversion factor: 372
\tbit rate adjustment factor: 1
\tmaximum programming current: 50
\tprogramming voltage: 5
\tguard time: None
nb of interface bytes: 0
nb of historical bytes: 0
""".rstrip()
)
assert atr.render() == expected_rendering
# Warnings
with pytest.warns(DeprecationWarning, match="ATR.TA"):
assert atr.hasTA == [False]
with pytest.warns(DeprecationWarning, match="ATR.TB"):
assert atr.hasTB == [False]
with pytest.warns(DeprecationWarning, match="ATR.TC"):
assert atr.hasTC == [False]
with pytest.warns(DeprecationWarning, match="ATR.TD"):
assert atr.hasTD == [False]
def test_only_ta1():
"""Verify that TA1 can be conveyed standalone."""
atr = ATR([0x3B, 0b0001_0000, 0xA7])
# `-- only enable TA
assert atr.TA == [0xA7]
assert "TA1: a7\n" in atr.render()
with pytest.warns(DeprecationWarning, match="ATR.TA"):
assert atr.hasTA == [True]
# TA1 affects these values
assert atr.getClockRateConversion() == 768
assert atr.getBitRateFactor() == 64
# Sanity check
assert atr.TB == atr.TC == atr.TD == [None]
assert atr.N is None
assert atr.getInterfaceBytesCount() == 1
assert atr.getHistoricalBytesCount() == 0
assert atr.hasChecksum is False
assert atr.checksumOK is None
assert atr.getChecksum() is None
def test_only_tb1():
"""Verify that TB1 can be conveyed standalone.
TB1 and TB2 are deprecated in ISO 7816-3 2006, so no values are checked here.
"""
atr = ATR([0x3B, 0b0010_0000, 0b0_10_11111])
# `-- only enable TB
assert atr.TB == [0b0_10_11111]
assert "TB1: 5f\n" in atr.render()
with pytest.warns(DeprecationWarning, match="ATR.TB"):
assert atr.hasTB == [True]
# TB1 affects these values
assert atr.II == 0b10
assert atr.PI1 == 0b11111
assert atr.getProgrammingVoltage() != 5
assert atr.getProgrammingCurrent() != 50
# Sanity check
assert atr.TA == atr.TC == atr.TD == [None]
assert atr.N is None
assert atr.getInterfaceBytesCount() == 1
assert atr.getHistoricalBytesCount() == 0
assert atr.hasChecksum is False
assert atr.checksumOK is None
assert atr.getChecksum() is None
def test_only_tc1():
"""Verify that TC1 can be conveyed standalone."""
atr = ATR([0x3B, 0b0100_0000, 0xC1])
# `-- only enable TC
assert atr.TC == [0xC1]
assert "TC1: c1\n" in atr.render()
with pytest.warns(DeprecationWarning, match="ATR.TC"):
assert atr.hasTC == [True]
# TC1 affects these values
assert atr.N == 0xC1
# Sanity check
assert atr.TA == atr.TB == atr.TD == [None]
assert atr.getInterfaceBytesCount() == 1
assert atr.getHistoricalBytesCount() == 0
assert atr.hasChecksum is False
assert atr.checksumOK is None
assert atr.getChecksum() is None
def test_only_td1():
"""Verify that TD1 can be conveyed standalone."""
atr = ATR([0x3B, 0b1000_0000, 0x00])
# `-- only enable TD
assert atr.TD == [0x00, None]
assert atr.isT0Supported() is True
assert atr.isT1Supported() is False
assert atr.isT15Supported() is False
assert "TD1: 0\n" in atr.render()
with pytest.warns(DeprecationWarning, match="ATR.TD"):
assert atr.hasTD == [True, False]
# Sanity check
assert atr.TA == atr.TB == atr.TC == [None, None]
assert atr.N is None
assert atr.getHistoricalBytesCount() == 0
assert atr.hasChecksum is False
assert atr.checksumOK is None
assert atr.getChecksum() is None
def test_historical_bytes():
"""Verify that historical bytes can be conveyed standalone."""
atr = ATR([0x3B, 0x0F, *list(range(15))])
# `-- indicate 15 historical bytes
assert atr.K == 15
assert atr.getHistoricalBytesCount() == 15
assert atr.getHistoricalBytes() == list(range(15))
# Sanity check
assert atr.TA == atr.TB == atr.TC == atr.TD == [None]
assert atr.N is None
assert atr.hasChecksum is False
assert atr.checksumOK is None
assert atr.getChecksum() is None
@pytest.mark.parametrize("ts", (0x3B, 0x3F))
@pytest.mark.parametrize("atr_bytes", ([0x00, 0x00], [0x1, 0xFE, 0xFF]))
def test_valid_checksums(ts, atr_bytes):
"""Verify behavior of valid checksums."""
atr = ATR([ts] + atr_bytes)
assert atr.hasChecksum is True
assert atr.checksumOK is True
assert atr.getChecksum() == atr_bytes[-1]
assert f"checksum: {atr_bytes[-1]}\n" in atr.render()
@pytest.mark.parametrize("ts", (0x3B, 0x3F))
@pytest.mark.parametrize("atr_bytes", ([0x00, 0x01], [0x01, 0xFE, 0x0]))
def test_invalid_checksums(ts, atr_bytes):
"""Verify behavior of invalid checksums."""
atr = ATR([ts] + atr_bytes)
assert atr.hasChecksum is True
assert atr.checksumOK is False
assert atr.getChecksum() == atr_bytes[-1]
assert f"checksum: {atr_bytes[-1]:x}\n" in atr.render()
|
