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liquidity-ad: fill in acceptance response

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Asks HSMD for signed lease termsheet, fills in the details to the
accept_channel2 TLV
This commit is contained in:
niftynei 2021-06-08 16:56:07 -05:00 committed by neil saitug
parent 9ad40f2544
commit 334ec0084b
2 changed files with 61 additions and 2 deletions
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6
lightningd/dual_open_control.c
View File

@ -2893,7 +2893,8 @@ static void start_fresh_dualopend(struct peer *peer,
hsmfd = hsm_get_client_fd(peer->ld, &peer->id, channel->unsaved_dbid, hsmfd = hsm_get_client_fd(peer->ld, &peer->id, channel->unsaved_dbid,
HSM_CAP_COMMITMENT_POINT HSM_CAP_COMMITMENT_POINT
| HSM_CAP_SIGN_REMOTE_TX); | HSM_CAP_SIGN_REMOTE_TX
| HSM_CAP_SIGN_WILL_FUND_OFFER);
channel->owner = new_channel_subd(peer->ld, channel->owner = new_channel_subd(peer->ld,
"lightning_dualopend", "lightning_dualopend",
@ -2959,7 +2960,8 @@ void peer_restart_dualopend(struct peer *peer,
} }
hsmfd = hsm_get_client_fd(peer->ld, &peer->id, channel->dbid, hsmfd = hsm_get_client_fd(peer->ld, &peer->id, channel->dbid,
HSM_CAP_COMMITMENT_POINT HSM_CAP_COMMITMENT_POINT
| HSM_CAP_SIGN_REMOTE_TX); | HSM_CAP_SIGN_REMOTE_TX
| HSM_CAP_SIGN_WILL_FUND_OFFER);
channel_set_owner(channel, channel_set_owner(channel,
new_channel_subd(peer->ld, "lightning_dualopend", new_channel_subd(peer->ld, "lightning_dualopend",

57
openingd/dualopend.c
View File

@ -1904,6 +1904,51 @@ static u8 *accepter_commits(struct state *state,
return msg; return msg;
} }
static void accept_tlv_add_offer(struct tlv_accept_tlvs *a_tlv,
struct lease_rates *rates,
struct pubkey funding_pubkey,
u32 blockheight)
{
secp256k1_ecdsa_signature ad_sig;
u8 *msg;
/* Go get the signature for this lease offer from HSMD */
msg = towire_hsmd_sign_option_will_fund_offer(NULL,
&funding_pubkey,
blockheight,
rates->channel_fee_max_base_msat,
rates->channel_fee_max_proportional_thousandths);
if (!wire_sync_write(HSM_FD, take(msg)))
status_failed(STATUS_FAIL_HSM_IO,
"Could not write to HSM: %s",
strerror(errno));
msg = wire_sync_read(tmpctx, HSM_FD);
if (!fromwire_hsmd_sign_option_will_fund_offer_reply(msg, &ad_sig))
status_failed(STATUS_FAIL_HSM_IO,
"Bad sign_option_will_fund_offer_reply %s",
tal_hex(tmpctx, msg));
/* BOLT- #2:
* The accepting node:
* ...
* - MUST set `funding_fee_base_sat` to the base fee
* (in satoshi) it will charge for the `funding_satoshis`
* - MUST set `funding_fee_proportional_basis` to the amount
* (in thousandths of satoshi) it will charge per `funding_satoshi`
* - MUST set `funding_weight` to the weight they
* will contribute to this channel, to fund the request.
* - MUST set `channel_fee_base_max_msat` to the base fee
* (in millisatoshi) it will charge for any HTLC on this channel
* during the funding period.
* - MUST set `channel_fee_proportional_basis_max` to the amount
* (in thousandths of a satoshi) it will charge per transferred
* satoshi during the funding period.
*/
a_tlv->will_fund = tal(a_tlv, struct tlv_accept_tlvs_will_fund);
a_tlv->will_fund->lease_rates = *rates;
a_tlv->will_fund->signature = ad_sig;
}
static void accepter_start(struct state *state, const u8 *oc2_msg) static void accepter_start(struct state *state, const u8 *oc2_msg)
{ {
struct bitcoin_blkid chain_hash; struct bitcoin_blkid chain_hash;
@ -2128,6 +2173,18 @@ static void accepter_start(struct state *state, const u8 *oc2_msg)
0); 0);
} }
/* BOLT- #2:
* The accepting node:
* ...
* - if the `option_will_fund` tlv was sent in `open_channel2`:
* - if they decide to accept the offer:
* - MUST include a `will_fund` tlv
*/
if (open_tlv->request_funds && tx_state->rates)
accept_tlv_add_offer(a_tlv, tx_state->rates,
state->our_funding_pubkey,
lease_blockheight_start);
msg = towire_accept_channel2(tmpctx, &state->channel_id, msg = towire_accept_channel2(tmpctx, &state->channel_id,
tx_state->accepter_funding, tx_state->accepter_funding,
tx_state->localconf.dust_limit, tx_state->localconf.dust_limit,