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df, channel: if a channel reconnects, but it's "unsaved" still

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Go ahead and start dualopend, but as a fresh instance.
This commit is contained in:
niftynei 2021-01-21 19:56:32 -06:00 committed by neil saitug
parent 779067d74c
commit 6407ad334f
1 changed files with 72 additions and 60 deletions
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132
lightningd/dual_open_control.c
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@ -2397,6 +2397,73 @@ AUTODATA(json_command, &openchannel_signed_command);
AUTODATA(json_command, &openchannel_bump_command);
#endif /* EXPERIMENTAL_FEATURES */
static void start_fresh_dualopend(struct peer *peer,
struct per_peer_state *pps,
struct channel *channel,
const u8 *send_msg)
{
int hsmfd;
u32 max_to_self_delay;
struct amount_msat min_effective_htlc_capacity;
const u8 *msg;
hsmfd = hsm_get_client_fd(peer->ld, &peer->id, channel->unsaved_dbid,
HSM_CAP_COMMITMENT_POINT
| HSM_CAP_SIGN_REMOTE_TX);
channel->owner = new_channel_subd(peer->ld,
"lightning_dualopend",
channel,
&peer->id,
channel->log, true,
dualopend_wire_name,
dual_opend_msg,
channel_errmsg,
channel_set_billboard,
take(&pps->peer_fd),
take(&pps->gossip_fd),
take(&pps->gossip_store_fd),
take(&hsmfd), NULL);
if (!channel->owner) {
char *errmsg;
errmsg = tal_fmt(tmpctx,
"Running lightning_dualopend: %s",
strerror(errno));
unsaved_channel_disconnect(channel, LOG_BROKEN, errmsg);
tal_free(channel);
return;
}
channel_config(peer->ld, &channel->our_config,
&max_to_self_delay,
&min_effective_htlc_capacity);
/* BOLT #2:
*
* The sender:
* - SHOULD set `minimum_depth` to a number of blocks it
* considers reasonable to avoid double-spending of the
* funding transaction.
*/
channel->minimum_depth = peer->ld->config.anchor_confirms;
msg = towire_dualopend_init(NULL, chainparams,
peer->ld->our_features,
peer->their_features,
&channel->our_config,
max_to_self_delay,
min_effective_htlc_capacity,
pps, &channel->local_basepoints,
&channel->local_funding_pubkey,
channel->minimum_depth,
feerate_min(peer->ld, NULL),
feerate_max(peer->ld, NULL),
send_msg);
subd_send_msg(channel->owner, take(msg));
}
void peer_restart_dualopend(struct peer *peer,
struct per_peer_state *pps,
struct channel *channel,
@ -2409,6 +2476,10 @@ void peer_restart_dualopend(struct peer *peer,
int hsmfd;
u8 *msg;
if (channel_unsaved(channel)) {
start_fresh_dualopend(peer, pps, channel, send_msg);
return;
}
hsmfd = hsm_get_client_fd(peer->ld, &peer->id, channel->dbid,
HSM_CAP_COMMITMENT_POINT
| HSM_CAP_SIGN_REMOTE_TX);
@ -2483,11 +2554,6 @@ void peer_start_dualopend(struct peer *peer,
struct per_peer_state *pps,
const u8 *send_msg)
{
int hsmfd;
u32 max_to_self_delay;
struct amount_msat min_effective_htlc_capacity;
const u8 *msg;
struct channel *channel;
/* And we never touch this. */
@ -2496,59 +2562,5 @@ void peer_start_dualopend(struct peer *peer,
peer->ld->config.fee_base,
peer->ld->config.fee_per_satoshi);
hsmfd = hsm_get_client_fd(peer->ld, &peer->id, channel->unsaved_dbid,
HSM_CAP_COMMITMENT_POINT
| HSM_CAP_SIGN_REMOTE_TX);
channel->owner = new_channel_subd(peer->ld,
"lightning_dualopend",
channel,
&peer->id,
channel->log, true,
dualopend_wire_name,
dual_opend_msg,
channel_errmsg,
channel_set_billboard,
take(&pps->peer_fd),
take(&pps->gossip_fd),
take(&pps->gossip_store_fd),
take(&hsmfd), NULL);
if (!channel->owner) {
char *errmsg;
errmsg = tal_fmt(tmpctx,
"Running lightning_dualopend: %s",
strerror(errno));
unsaved_channel_disconnect(channel, LOG_BROKEN, errmsg);
tal_free(channel);
return;
}
channel_config(peer->ld, &channel->our_config,
&max_to_self_delay,
&min_effective_htlc_capacity);
/* BOLT #2:
*
* The sender:
* - SHOULD set `minimum_depth` to a number of blocks it
* considers reasonable to avoid double-spending of the
* funding transaction.
*/
channel->minimum_depth = peer->ld->config.anchor_confirms;
msg = towire_dualopend_init(NULL, chainparams,
peer->ld->our_features,
peer->their_features,
&channel->our_config,
max_to_self_delay,
min_effective_htlc_capacity,
pps, &channel->local_basepoints,
&channel->local_funding_pubkey,
channel->minimum_depth,
feerate_min(peer->ld, NULL),
feerate_max(peer->ld, NULL),
send_msg);
subd_send_msg(channel->owner, take(msg));
start_fresh_dualopend(peer, pps, channel, send_msg);
}