core-lightning/bitcoin/tx.h
Rusty Russell 66084271c3 bitcoind: work around fundrawtransaction segwit issue.
See https://github.com/sipa/bitcaoin/issues/67

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2016-04-11 16:41:53 +09:30

71 lines
1.9 KiB
C

#ifndef LIGHTNING_BITCOIN_TX_H
#define LIGHTNING_BITCOIN_TX_H
#include "config.h"
#include "shadouble.h"
#include <ccan/short_types/short_types.h>
#include <ccan/tal/tal.h>
/* We unpack varints for our in-memory representation */
#define varint_t u64
struct bitcoin_tx {
u32 version;
varint_t input_count;
struct bitcoin_tx_input *input;
varint_t output_count;
struct bitcoin_tx_output *output;
u32 lock_time;
};
struct bitcoin_tx_output {
u64 amount;
varint_t script_length;
u8 *script;
};
struct bitcoin_tx_input {
struct sha256_double txid;
u32 index; /* output number referred to by above */
varint_t script_length;
u8 *script;
u32 sequence_number;
/* Only if BIP141 used. */
u8 **witness;
};
/* SHA256^2 the tx: simpler than sha256_tx */
void bitcoin_txid(const struct bitcoin_tx *tx, struct sha256_double *txid);
/* Useful for signature code. */
void sha256_tx_for_sig(struct sha256_ctx *ctx, const struct bitcoin_tx *tx,
unsigned int input_num);
/* Linear bytes of tx. */
u8 *linearize_tx(const tal_t *ctx, const struct bitcoin_tx *tx);
/* Force linearization in extended form; useful if 0 inputs. */
u8 *linearize_tx_force_extended(const tal_t *ctx,
const struct bitcoin_tx *tx);
/* Allocate a tx: you just need to fill in inputs and outputs (they're
* zeroed with inputs' sequence_number set to FFFFFFFF) */
struct bitcoin_tx *bitcoin_tx(const tal_t *ctx, varint_t input_count,
varint_t output_count);
/* This takes a raw bitcoin tx in hex. */
struct bitcoin_tx *bitcoin_tx_from_hex(const tal_t *ctx, const char *hex,
size_t hexlen);
/* Parse hex string to get txid (reversed, a-la bitcoind). */
bool bitcoin_txid_from_hex(const char *hexstr, size_t hexstr_len,
struct sha256_double *txid);
/* Get hex string of txid (reversed, a-la bitcoind). */
bool bitcoin_txid_to_hex(const struct sha256_double *txid,
char *hexstr, size_t hexstr_len);
#endif /* LIGHTNING_BITCOIN_TX_H */