44 lines
1.4 KiB
C
44 lines
1.4 KiB
C
#ifndef LIGHTNING_COMMON_CHANNEL_ID_H
|
|
#define LIGHTNING_COMMON_CHANNEL_ID_H
|
|
#include "config.h"
|
|
#include <ccan/short_types/short_types.h>
|
|
#include <ccan/structeq/structeq.h>
|
|
|
|
struct bitcoin_outpoint;
|
|
struct pubkey;
|
|
|
|
/* BOLT #2:
|
|
*
|
|
* This message introduces the `channel_id` to identify the channel. It's
|
|
* derived from the funding transaction by combining the `funding_txid` and
|
|
* the `funding_output_index`, using big-endian exclusive-OR
|
|
* (i.e. `funding_output_index` alters the last 2 bytes).
|
|
*/
|
|
struct channel_id {
|
|
u8 id[32];
|
|
};
|
|
/* Define channel_id_eq (no padding) */
|
|
STRUCTEQ_DEF(channel_id, 0, id);
|
|
|
|
/* For v1 channel establishment */
|
|
void derive_channel_id(struct channel_id *channel_id,
|
|
const struct bitcoin_outpoint *outpoint);
|
|
|
|
/* For v1 channel establishment */
|
|
void temporary_channel_id(struct channel_id *channel_id);
|
|
|
|
/* For v2 channel establishment */
|
|
void derive_channel_id_v2(struct channel_id *channel_id,
|
|
const struct pubkey *basepoint_1,
|
|
const struct pubkey *basepoint_2);
|
|
|
|
/* For v2 channel establishment */
|
|
void derive_tmp_channel_id(struct channel_id *channel_id,
|
|
const struct pubkey *opener_basepoint);
|
|
|
|
/* Marshalling/unmarshalling functions */
|
|
void towire_channel_id(u8 **pptr, const struct channel_id *channel_id);
|
|
bool fromwire_channel_id(const u8 **cursor, size_t *max,
|
|
struct channel_id *channel_id);
|
|
#endif /* LIGHTNING_COMMON_CHANNEL_ID_H */
|