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#ifndef LIGHTNING_COMMON_HTLC_H
#define LIGHTNING_COMMON_HTLC_H
#include "config.h"
#include "bitcoin/locktime.h"
#include "htlc_state.h"
#include <assert.h>
#include <ccan/crypto/sha256/sha256.h>
#include <ccan/crypto/siphash24/siphash24.h>
#include <ccan/htable/htable_type.h>
#include <ccan/short_types/short_types.h>
#include <ccan/str/str.h>
#define NUM_SIDES (REMOTE + 1)
enum side {
LOCAL,
REMOTE,
};
/* What are we doing: adding or removing? */
#define HTLC_ADDING 0x400
#define HTLC_REMOVING 0x800
/* Uncommitted change is pending */
#define HTLC_F_PENDING 0x01
/* HTLC is in commit_tx */
#define HTLC_F_COMMITTED 0x02
/* We have revoked the previous commit_tx */
#define HTLC_F_REVOKED 0x04
/* We offered it it. */
#define HTLC_F_OWNER 0x08
/* HTLC was ever in a commit_tx */
#define HTLC_F_WAS_COMMITTED 0x10
/* Each of the above flags applies to both sides */
#define HTLC_FLAG(side,flag) ((flag) << ((side) * 5))
#define HTLC_REMOTE_F_PENDING HTLC_FLAG(REMOTE,HTLC_F_PENDING)
#define HTLC_REMOTE_F_COMMITTED HTLC_FLAG(REMOTE,HTLC_F_COMMITTED)
#define HTLC_REMOTE_F_REVOKED HTLC_FLAG(REMOTE,HTLC_F_REVOKED)
#define HTLC_REMOTE_F_OWNER HTLC_FLAG(REMOTE,HTLC_F_OWNER)
#define HTLC_REMOTE_F_WAS_COMMITTED HTLC_FLAG(REMOTE,HTLC_F_WAS_COMMITTED)
#define HTLC_LOCAL_F_PENDING HTLC_FLAG(LOCAL,HTLC_F_PENDING)
#define HTLC_LOCAL_F_COMMITTED HTLC_FLAG(LOCAL,HTLC_F_COMMITTED)
#define HTLC_LOCAL_F_REVOKED HTLC_FLAG(LOCAL,HTLC_F_REVOKED)
#define HTLC_LOCAL_F_OWNER HTLC_FLAG(LOCAL,HTLC_F_OWNER)
#define HTLC_LOCAL_F_WAS_COMMITTED HTLC_FLAG(LOCAL,HTLC_F_WAS_COMMITTED)
const char *htlc_state_name(enum htlc_state s);
int htlc_state_flags(enum htlc_state state);
static inline enum side htlc_state_owner(enum htlc_state state)
{
if (state < RCVD_ADD_HTLC) {
assert((htlc_state_flags(state)
& (HTLC_REMOTE_F_OWNER|HTLC_LOCAL_F_OWNER))
== HTLC_LOCAL_F_OWNER);
return LOCAL;
} else {
assert((htlc_state_flags(state)
& (HTLC_REMOTE_F_OWNER|HTLC_LOCAL_F_OWNER))
== HTLC_REMOTE_F_OWNER);
return REMOTE;
}
}
static inline const char *side_to_str(enum side side)
{
switch (side) {
case LOCAL: return "LOCAL";
case REMOTE: return "REMOTE";
}
abort();
}
#endif /* LIGHTNING_COMMON_HTLC_H */