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fix: check requested amount against the paid invoice amount

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This commit is contained in:
Vlad Stan
2022-10-07 22:26:38 +03:00
parent 64028d559f
commit 80bd3c6d3a
1 changed files with 7 additions and 4 deletions
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11
cashu/mint/ledger.py
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@@ -187,11 +187,14 @@ class Ledger:
)
return payment_request, checking_id
async def _check_lightning_invoice(self, payment_hash: str):
async def _check_lightning_invoice(self, amounts, payment_hash: str):
"""Checks with the Lightning backend whether an invoice with this payment_hash was paid."""
invoice: Invoice = await get_lightning_invoice(payment_hash, db=self.db)
if invoice.issued:
raise Exception("tokens already issued for this invoice.")
total_requested = sum([amount for amount in amounts])
if total_requested > invoice.amount:
raise Exception(f"Requested amount too high: {total_requested}. Invoice amount: {invoice.amount}")
status = await WALLET.get_invoice_status(payment_hash)
if status.paid:
await update_lightning_invoice(payment_hash, issued=True, db=self.db)
@@ -237,9 +240,9 @@ class Ledger:
# check if lightning invoice was paid
if LIGHTNING:
try:
paid = await self._check_lightning_invoice(payment_hash)
except:
raise Exception("could not check invoice.")
paid = await self._check_lightning_invoice(amounts, payment_hash)
except Exception as e:
raise Exception("could not check invoice: " + str(e))
if not paid:
raise Exception("Lightning invoice not paid yet.")