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226 lines
6.2 KiB
226 lines
6.2 KiB
#include "db.h"
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#include "htlc.h"
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#include "log.h"
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#include "peer.h"
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#include "type_to_string.h"
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#include "gen_htlc_state_names.h"
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#include <ccan/array_size/array_size.h>
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#include <ccan/tal/str/str.h>
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#include <inttypes.h>
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const char *htlc_state_name(enum htlc_state s)
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{
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size_t i;
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for (i = 0; enum_htlc_state_names[i].name; i++)
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if (enum_htlc_state_names[i].v == s)
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return enum_htlc_state_names[i].name;
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return "unknown";
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}
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enum htlc_state htlc_state_from_name(const char *name)
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{
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size_t i;
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for (i = 0; enum_htlc_state_names[i].name; i++)
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if (streq(enum_htlc_state_names[i].name, name))
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return enum_htlc_state_names[i].v;
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return HTLC_STATE_INVALID;
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}
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/* This is the flags for each state. */
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static const int per_state_bits[] = {
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[SENT_ADD_HTLC] = HTLC_ADDING + HTLC_LOCAL_F_OWNER
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+ HTLC_REMOTE_F_PENDING,
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[SENT_ADD_COMMIT] = HTLC_ADDING + HTLC_LOCAL_F_OWNER
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+ HTLC_REMOTE_F_COMMITTED
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+ HTLC_REMOTE_F_WAS_COMMITTED,
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[RCVD_ADD_REVOCATION] = HTLC_ADDING + HTLC_LOCAL_F_OWNER
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+ HTLC_REMOTE_F_COMMITTED
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+ HTLC_REMOTE_F_REVOKED
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+ HTLC_LOCAL_F_PENDING
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+ HTLC_REMOTE_F_WAS_COMMITTED,
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[RCVD_ADD_ACK_COMMIT] = HTLC_ADDING + HTLC_LOCAL_F_OWNER
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+ HTLC_REMOTE_F_COMMITTED
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+ HTLC_REMOTE_F_REVOKED
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+ HTLC_LOCAL_F_COMMITTED
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+ HTLC_LOCAL_F_WAS_COMMITTED
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+ HTLC_REMOTE_F_WAS_COMMITTED,
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[SENT_ADD_ACK_REVOCATION] = HTLC_LOCAL_F_OWNER
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+ HTLC_REMOTE_F_COMMITTED
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+ HTLC_REMOTE_F_REVOKED
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+ HTLC_LOCAL_F_COMMITTED
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+ HTLC_LOCAL_F_REVOKED
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+ HTLC_LOCAL_F_WAS_COMMITTED
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+ HTLC_REMOTE_F_WAS_COMMITTED,
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[RCVD_REMOVE_HTLC] = HTLC_REMOVING + HTLC_LOCAL_F_OWNER
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+ HTLC_LOCAL_F_PENDING + HTLC_LOCAL_F_COMMITTED
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+ HTLC_REMOTE_F_COMMITTED
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+ HTLC_LOCAL_F_WAS_COMMITTED
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+ HTLC_REMOTE_F_WAS_COMMITTED,
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[RCVD_REMOVE_COMMIT] = HTLC_REMOVING + HTLC_LOCAL_F_OWNER
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+ HTLC_REMOTE_F_COMMITTED
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+ HTLC_LOCAL_F_WAS_COMMITTED
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+ HTLC_REMOTE_F_WAS_COMMITTED,
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[SENT_REMOVE_REVOCATION] = HTLC_REMOVING + HTLC_LOCAL_F_OWNER
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+ HTLC_REMOTE_F_COMMITTED
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+ HTLC_LOCAL_F_REVOKED
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+ HTLC_REMOTE_F_PENDING
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+ HTLC_LOCAL_F_WAS_COMMITTED
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+ HTLC_REMOTE_F_WAS_COMMITTED,
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[SENT_REMOVE_ACK_COMMIT] = HTLC_REMOVING + HTLC_LOCAL_F_OWNER
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+ HTLC_LOCAL_F_REVOKED
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+ HTLC_LOCAL_F_WAS_COMMITTED
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+ HTLC_REMOTE_F_WAS_COMMITTED,
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[RCVD_REMOVE_ACK_REVOCATION] = HTLC_LOCAL_F_OWNER
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+ HTLC_LOCAL_F_REVOKED
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+ HTLC_REMOTE_F_REVOKED
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+ HTLC_LOCAL_F_WAS_COMMITTED
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+ HTLC_REMOTE_F_WAS_COMMITTED,
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[RCVD_ADD_HTLC] = HTLC_ADDING + HTLC_REMOTE_F_OWNER
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+ HTLC_LOCAL_F_PENDING,
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[RCVD_ADD_COMMIT] = HTLC_ADDING + HTLC_REMOTE_F_OWNER
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+ HTLC_LOCAL_F_COMMITTED
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+ HTLC_LOCAL_F_WAS_COMMITTED,
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[SENT_ADD_REVOCATION] = HTLC_ADDING + HTLC_REMOTE_F_OWNER
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+ HTLC_LOCAL_F_COMMITTED
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+ HTLC_LOCAL_F_REVOKED
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+ HTLC_REMOTE_F_PENDING
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+ HTLC_LOCAL_F_WAS_COMMITTED,
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[SENT_ADD_ACK_COMMIT] = HTLC_ADDING + HTLC_REMOTE_F_OWNER
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+ HTLC_LOCAL_F_COMMITTED
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+ HTLC_LOCAL_F_REVOKED
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+ HTLC_REMOTE_F_COMMITTED
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+ HTLC_LOCAL_F_WAS_COMMITTED
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+ HTLC_REMOTE_F_WAS_COMMITTED,
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[RCVD_ADD_ACK_REVOCATION] = HTLC_REMOTE_F_OWNER
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+ HTLC_LOCAL_F_COMMITTED
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+ HTLC_LOCAL_F_REVOKED
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+ HTLC_REMOTE_F_COMMITTED
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+ HTLC_REMOTE_F_REVOKED
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+ HTLC_LOCAL_F_WAS_COMMITTED
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+ HTLC_REMOTE_F_WAS_COMMITTED,
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[SENT_REMOVE_HTLC] = HTLC_REMOVING + HTLC_REMOTE_F_OWNER
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+ HTLC_REMOTE_F_PENDING
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+ HTLC_LOCAL_F_COMMITTED
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+ HTLC_REMOTE_F_COMMITTED
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+ HTLC_LOCAL_F_WAS_COMMITTED
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+ HTLC_REMOTE_F_WAS_COMMITTED,
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[SENT_REMOVE_COMMIT] = HTLC_REMOVING + HTLC_REMOTE_F_OWNER
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+ HTLC_LOCAL_F_COMMITTED
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+ HTLC_LOCAL_F_WAS_COMMITTED
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+ HTLC_REMOTE_F_WAS_COMMITTED,
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[RCVD_REMOVE_REVOCATION] = HTLC_REMOVING + HTLC_REMOTE_F_OWNER
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+ HTLC_LOCAL_F_COMMITTED
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+ HTLC_REMOTE_F_REVOKED
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+ HTLC_LOCAL_F_PENDING
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+ HTLC_LOCAL_F_WAS_COMMITTED
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+ HTLC_REMOTE_F_WAS_COMMITTED,
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[RCVD_REMOVE_ACK_COMMIT] = HTLC_REMOVING + HTLC_REMOTE_F_OWNER
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+ HTLC_REMOTE_F_REVOKED
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+ HTLC_LOCAL_F_WAS_COMMITTED
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+ HTLC_REMOTE_F_WAS_COMMITTED,
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[SENT_REMOVE_ACK_REVOCATION] = HTLC_REMOTE_F_OWNER
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+ HTLC_REMOTE_F_REVOKED
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+ HTLC_LOCAL_F_REVOKED
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+ HTLC_LOCAL_F_WAS_COMMITTED
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+ HTLC_REMOTE_F_WAS_COMMITTED
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};
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int htlc_state_flags(enum htlc_state state)
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{
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assert(state < ARRAY_SIZE(per_state_bits));
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assert(per_state_bits[state]);
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return per_state_bits[state];
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}
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void htlc_changestate(struct htlc *h,
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enum htlc_state oldstate,
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enum htlc_state newstate,
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bool db_commit)
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{
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log_debug(h->peer->log, "htlc %"PRIu64": %s->%s", h->id,
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htlc_state_name(h->state), htlc_state_name(newstate));
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assert(h->state == oldstate);
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/* You can only go to consecutive states. */
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assert(newstate == h->state + 1);
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/* You can't change sides. */
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assert((htlc_state_flags(h->state)&(HTLC_LOCAL_F_OWNER|HTLC_REMOTE_F_OWNER))
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== (htlc_state_flags(newstate)&(HTLC_LOCAL_F_OWNER|HTLC_REMOTE_F_OWNER)));
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h->state = newstate;
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if (db_commit) {
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if (newstate == RCVD_ADD_COMMIT || newstate == SENT_ADD_COMMIT) {
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db_new_htlc(h->peer, h);
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return;
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}
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/* These never hit the database. */
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if (oldstate == RCVD_REMOVE_HTLC)
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oldstate = SENT_ADD_ACK_REVOCATION;
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else if (oldstate == SENT_REMOVE_HTLC)
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oldstate = RCVD_ADD_ACK_REVOCATION;
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db_update_htlc_state(h->peer, h, oldstate);
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}
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}
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void htlc_undostate(struct htlc *h,
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enum htlc_state oldstate,
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enum htlc_state newstate)
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{
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log_debug(h->peer->log, "htlc %"PRIu64": %s->%s", h->id,
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htlc_state_name(h->state), htlc_state_name(newstate));
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assert(h->state == oldstate);
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/* You can only return to previous state. */
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assert(newstate == h->state - 1);
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/* And must only be proposal, not commit. */
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assert(h->state == SENT_REMOVE_HTLC || h->state == RCVD_REMOVE_HTLC);
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/* You can't change sides. */
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assert((htlc_state_flags(h->state)&(HTLC_LOCAL_F_OWNER|HTLC_REMOTE_F_OWNER))
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== (htlc_state_flags(newstate)&(HTLC_LOCAL_F_OWNER|HTLC_REMOTE_F_OWNER)));
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h->state = newstate;
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}
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static char *fmt_htlc(const tal_t *ctx, const struct htlc *h)
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{
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return tal_fmt(ctx, "{ id=%"PRIu64
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" msatoshi=%"PRIu64
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" expiry=%s"
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" rhash=%s"
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" rval=%s"
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" src=%s }",
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h->id, h->msatoshi,
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type_to_string(ctx, struct abs_locktime, &h->expiry),
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type_to_string(ctx, struct sha256, &h->rhash),
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h->r ? tal_hexstr(ctx, h->r, sizeof(*h->r))
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: "UNKNOWN",
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h->src ? type_to_string(ctx, struct pubkey,
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h->src->peer->id)
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: "local");
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}
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REGISTER_TYPE_TO_STRING(htlc, fmt_htlc);
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