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70 lines
2.8 KiB
Python
70 lines
2.8 KiB
Python
import os
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import click
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from cashu.core.base import Proof
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from cashu.core.settings import CASHU_DIR
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from cashu.wallet.crud import get_keyset
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from cashu.wallet.wallet import Wallet as Wallet
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async def verify_mints(ctx, dtoken):
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trust_token_mints = True
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for mint_id in dtoken.get("mints"):
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for keyset in set(dtoken["mints"][mint_id]["ks"]):
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mint_url = dtoken["mints"][mint_id]["url"]
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# init a temporary wallet object
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keyset_wallet = Wallet(
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mint_url, os.path.join(CASHU_DIR, ctx.obj["WALLET_NAME"])
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)
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# make sure that this mint supports this keyset
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mint_keysets = await keyset_wallet._get_keysets(mint_url)
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assert keyset in mint_keysets["keysets"], "mint does not have this keyset."
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# we validate the keyset id by fetching the keys from the mint
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mint_keyset = await keyset_wallet._get_keyset(mint_url, keyset)
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assert keyset == mint_keyset.id, Exception("keyset not valid.")
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# we check the db whether we know this mint already and ask the user if not
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mint_keysets = await get_keyset(mint_url=mint_url, db=keyset_wallet.db)
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if mint_keysets is None:
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# we encountered a new mint and ask for a user confirmation
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trust_token_mints = False
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print("")
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print("Warning: Tokens are from a mint you don't know yet.")
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print("\n")
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print(f"Mint URL: {mint_url}")
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print(f"Mint keyset: {keyset}")
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print("\n")
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click.confirm(
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f"Do you trust this mint and want to receive the tokens?",
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abort=True,
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default=True,
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)
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trust_token_mints = True
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assert trust_token_mints, Exception("Aborted!")
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async def redeem_multimint(ctx, dtoken, script, signature):
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# we get the mint information in the token and load the keys of each mint
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# we then redeem the tokens for each keyset individually
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for mint_id in dtoken.get("mints"):
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for keyset in set(dtoken["mints"][mint_id]["ks"]):
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mint_url = dtoken["mints"][mint_id]["url"]
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# init a temporary wallet object
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keyset_wallet = Wallet(
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mint_url, os.path.join(CASHU_DIR, ctx.obj["WALLET_NAME"])
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)
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# load the keys
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await keyset_wallet.load_mint(keyset_id=keyset)
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# redeem proofs of this keyset
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redeem_proofs = [
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Proof(**p) for p in dtoken["tokens"] if Proof(**p).id == keyset
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]
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_, _ = await keyset_wallet.redeem(
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redeem_proofs, scnd_script=script, scnd_siganture=signature
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)
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