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refactor(python/stellar): avoid warning when constructing StellarSignTx

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[no changelog], covered in Stellar refactor changelog entries
This commit is contained in:
matejcik 2021-08-09 13:54:30 +02:00 committed by matejcik
parent 91e8413c7e
commit 399ee51be6
1 changed files with 37 additions and 25 deletions
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62
python/src/trezorlib/stellar.py
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@ -32,6 +32,7 @@ try:
IdMemo, IdMemo,
ManageData, ManageData,
ManageSellOffer, ManageSellOffer,
NoneMemo,
Operation, Operation,
PathPaymentStrictReceive, PathPaymentStrictReceive,
Payment, Payment,
@ -53,7 +54,6 @@ except ImportError:
DEFAULT_NETWORK_PASSPHRASE = "Public Global Stellar Network ; September 2015" DEFAULT_NETWORK_PASSPHRASE = "Public Global Stellar Network ; September 2015"
DEFAULT_BIP32_PATH = "m/44h/148h/0h" DEFAULT_BIP32_PATH = "m/44h/148h/0h"
# Stellar's BIP32 differs to Bitcoin's see https://github.com/stellar/stellar-protocol/blob/master/ecosystem/sep-0005.md
def from_envelope(envelope: "TransactionEnvelope"): def from_envelope(envelope: "TransactionEnvelope"):
@ -63,35 +63,47 @@ def from_envelope(envelope: "TransactionEnvelope"):
""" """
if not HAVE_STELLAR_SDK: if not HAVE_STELLAR_SDK:
raise RuntimeError("Stellar SDK not available") raise RuntimeError("Stellar SDK not available")
tx = messages.StellarSignTx()
parsed_tx = envelope.transaction parsed_tx = envelope.transaction
tx.source_account = parsed_tx.source.account_id if parsed_tx.time_bounds is None:
tx.fee = parsed_tx.fee raise ValueError("Timebounds are mandatory")
tx.sequence_number = parsed_tx.sequence
# Timebounds is an optional field memo_type = messages.StellarMemoType.NONE
if parsed_tx.time_bounds: memo_text = None
tx.timebounds_start = parsed_tx.time_bounds.min_time memo_id = None
tx.timebounds_end = parsed_tx.time_bounds.max_time memo_hash = None
if isinstance(parsed_tx.memo, NoneMemo):
memo = parsed_tx.memo pass
if isinstance(memo, TextMemo): elif isinstance(parsed_tx.memo, TextMemo):
# memo_text is specified as UTF-8 string, but returned as bytes from the XDR parser # memo_text is specified as UTF-8 string, but returned as bytes from the XDR parser
tx.memo_type = messages.StellarMemoType.TEXT memo_type = messages.StellarMemoType.TEXT
tx.memo_text = memo.memo_text.decode("utf-8") memo_text = parsed_tx.memo.memo_text.decode("utf-8")
elif isinstance(memo, IdMemo): elif isinstance(parsed_tx.memo, IdMemo):
tx.memo_type = messages.StellarMemoType.ID memo_type = messages.StellarMemoType.ID
tx.memo_id = memo.memo_id memo_id = parsed_tx.memo.memo_id
elif isinstance(memo, HashMemo): elif isinstance(parsed_tx.memo, HashMemo):
tx.memo_type = messages.StellarMemoType.HASH memo_type = messages.StellarMemoType.HASH
tx.memo_hash = memo.memo_hash memo_hash = parsed_tx.memo.memo_hash
elif isinstance(memo, ReturnHashMemo): elif isinstance(parsed_tx.memo, ReturnHashMemo):
tx.memo_type = messages.StellarMemoType.RETURN memo_type = messages.StellarMemoType.RETURN
tx.memo_hash = memo.memo_return memo_hash = parsed_tx.memo.memo_return
else: else:
tx.memo_type = messages.StellarMemoType.NONE raise ValueError("Unsupported memo type")
tx = messages.StellarSignTx(
source_account=parsed_tx.source.account_id,
fee=parsed_tx.fee,
sequence_number=parsed_tx.sequence,
timebounds_start=parsed_tx.time_bounds.min_time,
timebounds_end=parsed_tx.time_bounds.max_time,
memo_type=memo_type,
memo_text=memo_text,
memo_id=memo_id,
memo_hash=memo_hash,
num_operations=len(parsed_tx.operations),
network_passphrase=envelope.network_passphrase,
)
tx.num_operations = len(parsed_tx.operations)
operations = [_read_operation(op) for op in parsed_tx.operations] operations = [_read_operation(op) for op in parsed_tx.operations]
return tx, operations return tx, operations