mirror of
https://github.com/ElementsProject/lightning.git
synced 2024-11-19 18:11:28 +01:00
51 lines
1.7 KiB
C
51 lines
1.7 KiB
C
/* Encapsulation for pubkeys used as node ids: more compact, more dangerous. */
|
|
#ifndef LIGHTNING_COMMON_NODE_ID_H
|
|
#define LIGHTNING_COMMON_NODE_ID_H
|
|
#include "config.h"
|
|
#include <bitcoin/pubkey.h>
|
|
|
|
struct node_id {
|
|
u8 k[PUBKEY_CMPR_LEN];
|
|
};
|
|
|
|
static inline bool node_id_eq(const struct node_id *a,
|
|
const struct node_id *b)
|
|
{
|
|
return memcmp(a->k, b->k, sizeof(a->k)) == 0;
|
|
}
|
|
|
|
/* Is this actually a valid pubkey? Relatively expensive. */
|
|
bool node_id_valid(const struct node_id *id);
|
|
|
|
/* Convert from pubkey to compressed pubkey. */
|
|
void node_id_from_pubkey(struct node_id *id, const struct pubkey *key);
|
|
|
|
/* Returns false if not a valid pubkey: relatively expensive */
|
|
WARN_UNUSED_RESULT
|
|
bool pubkey_from_node_id(struct pubkey *key, const struct node_id *id);
|
|
|
|
/* Returns false if not a valid pubkey: relatively expensive */
|
|
WARN_UNUSED_RESULT
|
|
bool point32_from_node_id(struct point32 *key, const struct node_id *id);
|
|
|
|
/* Convert to hex string of SEC1 encoding. */
|
|
char *node_id_to_hexstr(const tal_t *ctx, const struct node_id *id);
|
|
|
|
/* Convert from hex string of SEC1 encoding: checks validity! */
|
|
bool node_id_from_hexstr(const char *str, size_t slen, struct node_id *id);
|
|
|
|
/* Compare the keys `a` and `b`. Return <0 if `a`<`b`, 0 if equal and >0 otherwise */
|
|
int node_id_cmp(const struct node_id *a, const struct node_id *b);
|
|
|
|
/* If the two nodes[] are id1 and id2, which index would id1 be? */
|
|
static inline int node_id_idx(const struct node_id *id1,
|
|
const struct node_id *id2)
|
|
{
|
|
return node_id_cmp(id1, id2) > 0;
|
|
}
|
|
|
|
/* marshal/unmarshal functions */
|
|
void towire_node_id(u8 **pptr, const struct node_id *id);
|
|
void fromwire_node_id(const u8 **cursor, size_t *max, struct node_id *id);
|
|
#endif /* LIGHTNING_COMMON_NODE_ID_H */
|