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