134 lines
3.5 KiB
C
134 lines
3.5 KiB
C
#ifndef LIGHTNING_LIGHTNINGD_PEER_CONTROL_H
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#define LIGHTNING_LIGHTNINGD_PEER_CONTROL_H
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#include "config.h"
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#include <ccan/compiler/compiler.h>
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#include <ccan/list/list.h>
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#include <daemon/htlc.h>
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#include <daemon/json.h>
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#include <daemon/netaddr.h>
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#include <lightningd/channel_config.h>
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#include <lightningd/peer_state.h>
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#include <stdbool.h>
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#define ANNOUNCE_MIN_DEPTH 6
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struct crypto_state;
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struct peer {
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struct lightningd *ld;
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/* Unique ID (works before we know their pubkey) */
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u64 unique_id;
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/* What's happening. */
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enum peer_state state;
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/* Which side offered channel? */
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enum side funder;
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/* Inside ld->peers. */
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struct list_node list;
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/* What stage is this in? NULL during first creation. */
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struct subd *owner;
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/* History */
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struct log_book *log_book;
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struct log *log;
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/* ID of peer (NULL before initial handshake). */
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struct pubkey *id;
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/* Our fd to the peer (-1 when we don't have it). */
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int fd;
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/* Crypto state (NULL if it's in daemon) */
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struct crypto_state *cs;
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/* Where we connected to, or it connected from. */
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struct netaddr netaddr;
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/* Our channel config. */
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struct channel_config our_config;
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/* Channel if locked. */
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struct short_channel_id *scid;
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/* Minimum funding depth (specified by us if they fund). */
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u32 minimum_depth;
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/* Funding txid and amounts (once known) */
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struct sha256_double *funding_txid;
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u16 funding_outnum;
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u64 funding_satoshi, push_msat;
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/* Channel balance (LOCAL and REMOTE); if we have one. */
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u64 *balance;
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/* Keys for channel. */
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struct channel_info *channel_info;
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/* Secret seed (FIXME: Move to hsm!) */
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struct privkey *seed;
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/* Gossip client fd, forwarded to the respective owner */
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int gossip_client_fd;
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};
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static inline bool peer_can_add_htlc(const struct peer *peer)
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{
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return peer->state == CHANNELD_NORMAL;
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}
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static inline bool peer_can_remove_htlc(const struct peer *peer)
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{
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return peer->state == CHANNELD_NORMAL
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|| peer->state == SHUTDOWND_SENT
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|| peer->state == SHUTDOWND_RCVD
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|| peer->state == ONCHAIND_THEIR_UNILATERAL
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|| peer->state == ONCHAIND_OUR_UNILATERAL;
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}
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static inline bool peer_on_chain(const struct peer *peer)
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{
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return peer->state == ONCHAIND_CHEATED
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|| peer->state == ONCHAIND_THEIR_UNILATERAL
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|| peer->state == ONCHAIND_OUR_UNILATERAL
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|| peer->state == ONCHAIND_MUTUAL;
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}
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/* BOLT #2:
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*
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* On disconnection, the funder MUST remember the channel for
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* reconnection if it has broadcast the funding transaction, otherwise it
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* MUST NOT.
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*
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* On disconnection, the non-funding node MUST remember the channel for
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* reconnection if it has sent the `funding_signed` message, otherwise
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* it MUST NOT.
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*/
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static inline bool peer_persists(const struct peer *peer)
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{
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return peer->state > GETTING_SIG_FROM_HSM;
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}
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struct peer *peer_by_unique_id(struct lightningd *ld, u64 unique_id);
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struct peer *peer_by_id(struct lightningd *ld, const struct pubkey *id);
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struct peer *peer_from_json(struct lightningd *ld,
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const char *buffer,
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jsmntok_t *peeridtok);
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void peer_fundee_open(struct peer *peer, const u8 *msg);
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void add_peer(struct lightningd *ld, u64 unique_id,
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int fd, const struct pubkey *id,
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const struct crypto_state *cs);
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/* Peer has failed. */
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PRINTF_FMT(2,3) void peer_fail(struct peer *peer, const char *fmt, ...);
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const char *peer_state_name(enum peer_state state);
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void peer_set_condition(struct peer *peer, enum peer_state oldstate,
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enum peer_state state);
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void setup_listeners(struct lightningd *ld);
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#endif /* LIGHTNING_LIGHTNINGD_PEER_CONTROL_H */
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