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fix(core): scope Cardano confirmation to allow GC

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Otherwise, we may run out of heap due to recursion.

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This commit is contained in:
Roman Zeyde 2025-03-09 13:59:59 +02:00 committed by Roman Zeyde
parent 103568e2e5
commit 2400fcb95d
1 changed files with 53 additions and 48 deletions
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101
core/src/apps/cardano/layout.py
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@ -89,64 +89,69 @@ async def show_native_script(
key_hash = script.key_hash # local_cache_attribute
scripts = script.scripts # local_cache_attribute
script_heading = "Script"
if indices is None:
indices = []
if indices:
script_heading += " " + ".".join(str(i) for i in indices)
script_type_name_suffix = ""
if script_type == CNST.PUB_KEY:
if key_path:
script_type_name_suffix = "path"
elif key_hash:
script_type_name_suffix = "hash"
async def confirm_native_script() -> None:
script_heading = "Script"
if indices:
script_heading += " " + ".".join(str(i) for i in indices)
props: list[PropertyType] = [
(
f"{script_heading} - {SCRIPT_TYPE_NAMES[script_type]} {script_type_name_suffix}:",
None,
)
]
append = props.append # local_cache_attribute
script_type_name_suffix = ""
if script_type == CNST.PUB_KEY:
if key_path:
script_type_name_suffix = "path"
elif key_hash:
script_type_name_suffix = "hash"
if script_type == CNST.PUB_KEY:
assert key_hash is not None or key_path # validate_script
if key_hash:
append((None, bech32.encode(bech32.HRP_SHARED_KEY_HASH, key_hash)))
elif key_path:
append((address_n_to_str(key_path), None))
elif script_type == CNST.N_OF_K:
assert script.required_signatures_count is not None # validate_script
append(
props: list[PropertyType] = [
(
TR.cardano__x_of_y_signatures_template.format(
script.required_signatures_count, len(scripts)
),
f"{script_heading} - {SCRIPT_TYPE_NAMES[script_type]} {script_type_name_suffix}:",
None,
)
]
append = props.append # local_cache_attribute
if script_type == CNST.PUB_KEY:
assert key_hash is not None or key_path # validate_script
if key_hash:
append((None, bech32.encode(bech32.HRP_SHARED_KEY_HASH, key_hash)))
elif key_path:
append((address_n_to_str(key_path), None))
elif script_type == CNST.N_OF_K:
assert script.required_signatures_count is not None # validate_script
append(
(
TR.cardano__x_of_y_signatures_template.format(
script.required_signatures_count, len(scripts)
),
None,
)
)
elif script_type == CNST.INVALID_BEFORE:
assert script.invalid_before is not None # validate_script
append((str(script.invalid_before), None))
elif script_type == CNST.INVALID_HEREAFTER:
assert script.invalid_hereafter is not None # validate_script
append((str(script.invalid_hereafter), None))
if script_type in (
CNST.ALL,
CNST.ANY,
CNST.N_OF_K,
):
assert scripts # validate_script
append((TR.cardano__nested_scripts_template.format(len(scripts)), None))
await confirm_properties(
"verify_script",
TR.cardano__verify_script,
props,
br_code=BRT_Other,
)
elif script_type == CNST.INVALID_BEFORE:
assert script.invalid_before is not None # validate_script
append((str(script.invalid_before), None))
elif script_type == CNST.INVALID_HEREAFTER:
assert script.invalid_hereafter is not None # validate_script
append((str(script.invalid_hereafter), None))
if script_type in (
CNST.ALL,
CNST.ANY,
CNST.N_OF_K,
):
assert scripts # validate_script
append((TR.cardano__nested_scripts_template.format(len(scripts)), None))
await confirm_properties(
"verify_script",
TR.cardano__verify_script,
props,
br_code=BRT_Other,
)
# Allow GC to free local variables after confirmation is over
await confirm_native_script()
for i, sub_script in enumerate(scripts):
await show_native_script(sub_script, indices + [i + 1])