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lightningd/lightningd: create unique ID for each peer.

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This distinguishes them before they have an ID, and also if the daemon
doesn't know the ID.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell 2017-01-10 15:38:33 +10:30
parent bf118f1b86
commit 03758af4e1
2 changed files with 21 additions and 4 deletions
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23
lightningd/peer_control.c
View File

@ -19,6 +19,9 @@
struct peer {
struct lightningd *ld;
/* Unique ID (works before we know their pubkey) */
u64 unique_id;
/* Inside ld->peers. */
struct list_node list;
@ -44,8 +47,10 @@ static void destroy_peer(struct peer *peer)
static struct peer *new_peer(const tal_t *ctx, struct lightningd *ld, int fd)
{
static u64 id_counter;
struct peer *peer = tal(ctx, struct peer);
peer->ld = ld;
peer->unique_id = id_counter++;
peer->owner = NULL;
peer->id = NULL;
peer->fd = fd;
@ -54,6 +59,16 @@ static struct peer *new_peer(const tal_t *ctx, struct lightningd *ld, int fd)
return peer;
}
struct peer *peer_by_unique_id(struct lightningd *ld, u64 unique_id)
{
struct peer *p;
list_for_each(&ld->peers, p, list)
if (p->unique_id == unique_id)
return p;
return NULL;
}
static void handshake_succeeded(struct subdaemon *hs, const u8 *msg,
struct peer *peer)
{
@ -145,8 +160,8 @@ static struct io_plan *peer_in(struct io_conn *conn, struct lightningd *ld)
struct peer *peer = new_peer(ld, ld, io_conn_fd(conn));
/* Get HSM fd for this peer. */
/* FIXME: We use pointer as ID. */
subdaemon_req(ld->hsm, take(towire_hsmctl_hsmfd_ecdh(ld, (u64)peer)),
subdaemon_req(ld->hsm,
take(towire_hsmctl_hsmfd_ecdh(ld, peer->unique_id)),
-1, &peer->hsmfd, peer_got_hsmfd, peer);
/* We don't need conn, we'll pass fd to handshaked. */
@ -273,8 +288,8 @@ static struct io_plan *peer_out(struct io_conn *conn,
peer->id = tal_dup(peer, struct pubkey, &jc->id);
/* Get HSM fd for this peer. */
/* FIXME: We use pointer as ID. */
subdaemon_req(ld->hsm, take(towire_hsmctl_hsmfd_ecdh(ld, (u64)peer)),
subdaemon_req(ld->hsm,
take(towire_hsmctl_hsmfd_ecdh(ld, peer->unique_id)),
-1, &peer->hsmfd, peer_got_hsmfd, peer);
/* We don't need conn, we'll pass fd to handshaked. */

2
lightningd/peer_control.h
View File

@ -5,5 +5,7 @@
struct lightningd;
struct peer *peer_by_unique_id(struct lightningd *ld, u64 unique_id);
void setup_listeners(struct lightningd *ld);
#endif /* LIGHTNING_LIGHTNINGD_PEER_CONTROL_H */