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fix(python): allow unsigned legacy firmware (fixes #2801)

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matejcik 2023-02-17 12:06:46 +01:00 committed by matejcik
parent c4bf4fa884
commit 966e5d8286
2 changed files with 13 additions and 5 deletions
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1
python/.changelog.d/2801.fixed Normal file
View File

@ -0,0 +1 @@
Fixed behavior of `trezorctl fw` with unsigned Trezor One firmwares.

17
python/src/trezorlib/cli/firmware.py
View File

@ -77,7 +77,9 @@ def print_firmware_version(fw: "firmware.FirmwareType") -> None:
_print_version(fw.firmware.header.version)
def validate_signatures(fw: "firmware.FirmwareType") -> None:
def validate_signatures(
fw: "firmware.FirmwareType", prompt_unsigned: bool = True
) -> None:
"""Check the signatures on the firmware.
Prints the validity status.
@ -86,14 +88,17 @@ def validate_signatures(fw: "firmware.FirmwareType") -> None:
"""
try:
fw.verify()
click.echo("Signatures are valid.")
except firmware.Unsigned:
if not isinstance(fw, firmware.LegacyFirmware):
raise
if not prompt_unsigned or not isinstance(
fw, (firmware.LegacyFirmware, firmware.LegacyV2Firmware)
):
click.echo("Firmware is not signed, aborting.")
sys.exit(4)
# allow legacy firmware without signatures
if not click.confirm("No signatures found. Continue?", default=False):
sys.exit(1)
if firmware.is_onev2(fw):
try:
assert fw.embedded_v2 is not None
@ -337,6 +342,7 @@ def validate_firmware(
fingerprint: Optional[str] = None,
bootloader_onev2: Optional[bool] = None,
trezor_major_version: Optional[int] = None,
prompt_unsigned: bool = True,
) -> None:
"""Validate the firmware through multiple tests.
@ -352,7 +358,7 @@ def validate_firmware(
print_firmware_version(fw)
validate_fingerprint(fw, fingerprint)
validate_signatures(fw)
validate_signatures(fw, prompt_unsigned=prompt_unsigned)
if bootloader_onev2 is not None and trezor_major_version is not None:
check_device_match(
@ -447,6 +453,7 @@ def verify(
fingerprint=fingerprint,
bootloader_onev2=bootloader_onev2,
trezor_major_version=trezor_major_version,
prompt_unsigned=False,
)