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have towire_wally_psbt and fromwire_wally_psbt set safe psbt version

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Greg Sanders 2023-04-10 09:48:38 -04:00 • committed by Rusty Russell
parent 650443e4d5
commit e30f2cb4a4
1 changed files with 18 additions and 3 deletions
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21
bitcoin/psbt.c
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@ -737,12 +737,24 @@ struct wally_psbt *psbt_from_bytes(const tal_t *ctx, const u8 *bytes,
void towire_wally_psbt(u8 **pptr, const struct wally_psbt *psbt)
{
struct wally_psbt *psbt_copy;
/* Let's include the PSBT bytes */
size_t bytes_written;
const u8 *pbt_bytes = psbt_get_bytes(NULL, psbt, &bytes_written);
const u8 *psbt_bytes = psbt_get_bytes(NULL, psbt, &bytes_written);
/* When sending to other processes, set to v0 for compat */
psbt_copy = psbt_from_bytes(NULL, psbt_bytes, bytes_written);
tal_free(psbt_bytes);
if (!is_elements(chainparams))
psbt_set_version(psbt_copy, 0);
const u8 *psbt_bytes_copy = psbt_get_bytes(NULL, psbt_copy, &bytes_written);
towire_u32(pptr, bytes_written);
towire_u8_array(pptr, pbt_bytes, bytes_written);
tal_free(pbt_bytes);
towire_u8_array(pptr, psbt_bytes_copy, bytes_written);
tal_free(psbt_bytes_copy);
tal_free(psbt_copy);
}
struct wally_psbt *fromwire_wally_psbt(const tal_t *ctx,
@ -773,6 +785,9 @@ struct wally_psbt *fromwire_wally_psbt(const tal_t *ctx,
tal_free(tmpbuf);
#endif
/* Internally we always operate on v2 */
psbt_set_version(psbt, 2);
return psbt;
}