lightningd/onchain_control: routines to control onchaind (move from peer_control.c)
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell
Christian Decker
parent
9176ee628c
commit
372040bbd5
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@ -63,6 +63,7 @@ LIGHTNINGD_SRC := \
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lightningd/log.c \
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lightningd/log_status.c \
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lightningd/netaddress.c \
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lightningd/onchain_control.c \
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lightningd/opening_control.c \
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lightningd/opt_time.c \
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lightningd/options.c \
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@ -0,0 +1,473 @@
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#include <common/key_derive.h>
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#include <errno.h>
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#include <inttypes.h>
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#include <lightningd/chaintopology.h>
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#include <lightningd/lightningd.h>
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#include <lightningd/log.h>
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#include <lightningd/onchain_control.h>
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#include <lightningd/peer_control.h>
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#include <lightningd/subd.h>
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#include <lightningd/watch.h>
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#include <onchaind/gen_onchain_wire.h>
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#include <onchaind/onchain_wire.h>
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/* We dump all the known preimages when onchaind starts up. */
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static void onchaind_tell_fulfill(struct channel *channel)
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{
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struct htlc_in_map_iter ini;
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struct htlc_in *hin;
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u8 *msg;
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struct lightningd *ld = channel->peer->ld;
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for (hin = htlc_in_map_first(&ld->htlcs_in, &ini);
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hin;
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hin = htlc_in_map_next(&ld->htlcs_in, &ini)) {
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if (hin->key.channel != channel)
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continue;
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/* BOLT #5:
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*
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* If the node receives (or already knows) a payment preimage
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* for an unresolved HTLC output it was offered for which it
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* has committed to an outgoing HTLC, it MUST *resolve* the
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* output by spending it. Otherwise, if the other node is not
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* irrevocably committed to the HTLC, it MUST NOT *resolve*
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* the output by spending it.
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*/
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/* We only set preimage once it's irrevocably committed, and
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* we spend even if we don't have an outgoing HTLC (eg. local
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* payment complete) */
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if (!hin->preimage)
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continue;
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msg = towire_onchain_known_preimage(channel, hin->preimage);
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subd_send_msg(channel->owner, take(msg));
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}
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}
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static void handle_onchain_init_reply(struct channel *channel, const u8 *msg)
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{
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u8 state;
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if (!fromwire_onchain_init_reply(msg, NULL, &state)) {
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channel_internal_error(channel, "Invalid onchain_init_reply");
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return;
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}
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if (!channel_state_on_chain(state)) {
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channel_internal_error(channel,
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"Invalid onchain_init_reply state %u (%s)",
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state, channel_state_str(state));
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return;
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}
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channel_set_state(channel, FUNDING_SPEND_SEEN, state);
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/* Tell it about any preimages we know. */
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onchaind_tell_fulfill(channel);
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}
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static enum watch_result onchain_tx_watched(struct channel *channel,
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const struct bitcoin_tx *tx,
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unsigned int depth,
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void *unused)
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{
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u8 *msg;
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struct bitcoin_txid txid;
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if (depth == 0) {
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log_unusual(channel->log, "Chain reorganization!");
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channel_set_owner(channel, NULL);
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/* FIXME!
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topology_rescan(peer->ld->topology, peer->funding_txid);
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*/
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/* We will most likely be freed, so this is a noop */
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return KEEP_WATCHING;
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}
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bitcoin_txid(tx, &txid);
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msg = towire_onchain_depth(channel, &txid, depth);
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subd_send_msg(channel->owner, take(msg));
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return KEEP_WATCHING;
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}
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static void watch_tx_and_outputs(struct channel *channel,
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const struct bitcoin_tx *tx);
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static enum watch_result onchain_txo_watched(struct channel *channel,
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const struct bitcoin_tx *tx,
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size_t input_num,
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const struct block *block,
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void *unused)
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{
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u8 *msg;
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watch_tx_and_outputs(channel, tx);
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msg = towire_onchain_spent(channel, tx, input_num, block->height);
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subd_send_msg(channel->owner, take(msg));
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/* We don't need to keep watching: If this output is double-spent
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* (reorg), we'll get a zero depth cb to onchain_tx_watched, and
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* restart onchaind. */
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return DELETE_WATCH;
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}
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/* To avoid races, we watch the tx and all outputs. */
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static void watch_tx_and_outputs(struct channel *channel,
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const struct bitcoin_tx *tx)
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{
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struct bitcoin_txid txid;
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struct txwatch *txw;
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struct lightningd *ld = channel->peer->ld;
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bitcoin_txid(tx, &txid);
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/* Make txwatch a parent of txo watches, so we can unwatch together. */
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txw = watch_tx(channel->owner, ld->topology, channel, tx,
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onchain_tx_watched, NULL);
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for (size_t i = 0; i < tal_count(tx->output); i++)
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watch_txo(txw, ld->topology, channel, &txid, i,
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onchain_txo_watched, NULL);
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}
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static void handle_onchain_broadcast_tx(struct channel *channel, const u8 *msg)
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{
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struct bitcoin_tx *tx;
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if (!fromwire_onchain_broadcast_tx(msg, msg, NULL, &tx)) {
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channel_internal_error(channel, "Invalid onchain_broadcast_tx");
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return;
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}
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/* We don't really care if it fails, we'll respond via watch. */
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broadcast_tx(channel->peer->ld->topology, channel, tx, NULL);
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}
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static void handle_onchain_unwatch_tx(struct channel *channel, const u8 *msg)
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{
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struct bitcoin_txid txid;
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struct txwatch *txw;
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if (!fromwire_onchain_unwatch_tx(msg, NULL, &txid)) {
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channel_internal_error(channel, "Invalid onchain_unwatch_tx");
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return;
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}
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/* Frees the txo watches, too: see watch_tx_and_outputs() */
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txw = find_txwatch(channel->peer->ld->topology, &txid, channel);
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if (!txw)
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log_unusual(channel->log, "Can't unwatch txid %s",
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type_to_string(ltmp, struct bitcoin_txid, &txid));
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tal_free(txw);
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}
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static void handle_extracted_preimage(struct channel *channel, const u8 *msg)
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{
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struct preimage preimage;
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if (!fromwire_onchain_extracted_preimage(msg, NULL, &preimage)) {
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channel_internal_error(channel, "Invalid extracted_preimage");
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return;
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}
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onchain_fulfilled_htlc(channel, &preimage);
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}
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static void handle_missing_htlc_output(struct channel *channel, const u8 *msg)
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{
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struct htlc_stub htlc;
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if (!fromwire_onchain_missing_htlc_output(msg, NULL, &htlc)) {
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channel_internal_error(channel, "Invalid missing_htlc_output");
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return;
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}
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/* BOLT #5:
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*
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* For any committed HTLC which does not have an output in this
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* commitment transaction, the node MUST fail the corresponding
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* incoming HTLC (if any) once the commitment transaction has reached
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* reasonable depth, and MAY fail it sooner if no valid commitment
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* transaction contains an output corresponding to the HTLC.
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*/
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onchain_failed_our_htlc(channel, &htlc, "missing in commitment tx");
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}
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static void handle_onchain_htlc_timeout(struct channel *channel, const u8 *msg)
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{
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struct htlc_stub htlc;
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if (!fromwire_onchain_htlc_timeout(msg, NULL, &htlc)) {
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channel_internal_error(channel, "Invalid onchain_htlc_timeout");
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return;
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}
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/* BOLT #5:
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*
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* If the HTLC output has *timed out* and not been *resolved*, the node
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* MUST *resolve* the output and MUST fail the corresponding incoming
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* HTLC (if any) once the resolving transaction has reached reasonable
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* depth.
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*/
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onchain_failed_our_htlc(channel, &htlc, "timed out");
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}
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static void handle_irrevocably_resolved(struct channel *channel, const u8 *msg)
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{
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/* FIXME: Implement check_htlcs to ensure no dangling hout->in ptrs! */
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free_htlcs(channel->peer->ld, channel);
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log_info(channel->log, "onchaind complete, forgetting peer");
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/* This will also free onchaind. */
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delete_channel(channel, "onchaind complete, forgetting peer");
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}
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/**
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* onchain_add_utxo -- onchaind is telling us about an UTXO we own
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*/
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static void onchain_add_utxo(struct channel *channel, const u8 *msg)
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{
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struct utxo *u = tal(msg, struct utxo);
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u->close_info = tal(u, struct unilateral_close_info);
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u->is_p2sh = true;
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u->keyindex = 0;
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u->status = output_state_available;
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u->close_info->channel_id = channel->dbid;
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u->close_info->peer_id = channel->peer->id;
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if (!fromwire_onchain_add_utxo(msg, NULL, &u->txid, &u->outnum,
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&u->close_info->commitment_point,
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&u->amount)) {
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fatal("onchaind gave invalid add_utxo message: %s", tal_hex(msg, msg));
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}
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wallet_add_utxo(channel->peer->ld->wallet, u, p2wpkh);
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}
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static unsigned int onchain_msg(struct subd *sd, const u8 *msg, const int *fds)
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{
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enum onchain_wire_type t = fromwire_peektype(msg);
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switch (t) {
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case WIRE_ONCHAIN_INIT_REPLY:
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handle_onchain_init_reply(sd->channel, msg);
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break;
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case WIRE_ONCHAIN_BROADCAST_TX:
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handle_onchain_broadcast_tx(sd->channel, msg);
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break;
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case WIRE_ONCHAIN_UNWATCH_TX:
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handle_onchain_unwatch_tx(sd->channel, msg);
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break;
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case WIRE_ONCHAIN_EXTRACTED_PREIMAGE:
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handle_extracted_preimage(sd->channel, msg);
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break;
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case WIRE_ONCHAIN_MISSING_HTLC_OUTPUT:
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handle_missing_htlc_output(sd->channel, msg);
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break;
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case WIRE_ONCHAIN_HTLC_TIMEOUT:
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handle_onchain_htlc_timeout(sd->channel, msg);
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break;
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case WIRE_ONCHAIN_ALL_IRREVOCABLY_RESOLVED:
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handle_irrevocably_resolved(sd->channel, msg);
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break;
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case WIRE_ONCHAIN_ADD_UTXO:
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onchain_add_utxo(sd->channel, msg);
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break;
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/* We send these, not receive them */
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case WIRE_ONCHAIN_INIT:
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case WIRE_ONCHAIN_SPENT:
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case WIRE_ONCHAIN_DEPTH:
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case WIRE_ONCHAIN_HTLC:
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case WIRE_ONCHAIN_KNOWN_PREIMAGE:
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break;
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}
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return 0;
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}
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/* If we want to know if this HTLC is missing, return depth. */
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static bool tell_if_missing(const struct channel *channel,
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struct htlc_stub *stub,
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bool *tell_immediate)
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{
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struct htlc_out *hout;
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/* Keep valgrind happy. */
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*tell_immediate = false;
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/* Is it a current HTLC? */
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hout = find_htlc_out_by_ripemd(channel, &stub->ripemd);
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if (!hout)
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return false;
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/* BOLT #5:
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*
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* For any committed HTLC which does not have an output in this
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* commitment transaction, the node MUST fail the corresponding
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* incoming HTLC (if any) once the commitment transaction has reached
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* reasonable depth, and MAY fail it sooner if no valid commitment
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* transaction contains an output corresponding to the HTLC.
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*/
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if (hout->hstate >= RCVD_ADD_REVOCATION
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&& hout->hstate < SENT_REMOVE_REVOCATION)
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*tell_immediate = true;
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log_debug(channel->log,
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"We want to know if htlc %"PRIu64" is missing (%s)",
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hout->key.id, *tell_immediate ? "immediate" : "later");
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return true;
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}
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/* Only error onchaind can get is if it dies. */
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static void onchain_error(struct channel *channel,
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int peer_fd, int gossip_fd,
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const struct crypto_state *cs,
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u64 gossip_index,
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const struct channel_id *channel_id,
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const char *desc,
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const u8 *err_for_them)
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{
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/* FIXME: re-launch? */
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log_broken(channel->log, "%s", desc);
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}
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/* With a reorg, this can get called multiple times; each time we'll kill
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* onchaind (like any other owner), and restart */
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enum watch_result funding_spent(struct channel *channel,
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const struct bitcoin_tx *tx,
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size_t input_num,
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const struct block *block,
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void *unused)
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{
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u8 *msg, *scriptpubkey;
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struct bitcoin_txid our_last_txid;
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s64 keyindex;
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struct pubkey ourkey;
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struct htlc_stub *stubs;
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const tal_t *tmpctx = tal_tmpctx(channel);
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struct lightningd *ld = channel->peer->ld;
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channel_fail_permanent(channel, "Funding transaction spent");
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/* We could come from almost any state. */
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channel_set_state(channel, channel->state, FUNDING_SPEND_SEEN);
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channel_set_owner(channel, new_channel_subd(ld,
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"lightning_onchaind",
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channel,
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channel->log,
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onchain_wire_type_name,
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onchain_msg,
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onchain_error,
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NULL));
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if (!channel->owner) {
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log_broken(channel->log, "Could not subdaemon onchain: %s",
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strerror(errno));
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tal_free(tmpctx);
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return KEEP_WATCHING;
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}
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stubs = wallet_htlc_stubs(tmpctx, ld->wallet, channel);
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if (!stubs) {
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log_broken(channel->log, "Could not load htlc_stubs");
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tal_free(tmpctx);
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return KEEP_WATCHING;
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}
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/* We re-use this key to send other outputs to. */
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if (channel->local_shutdown_idx >= 0)
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keyindex = channel->local_shutdown_idx;
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else {
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keyindex = wallet_get_newindex(ld);
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if (keyindex < 0) {
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log_broken(channel->log, "Could not get keyindex");
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tal_free(tmpctx);
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return KEEP_WATCHING;
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}
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}
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scriptpubkey = p2wpkh_for_keyidx(tmpctx, ld, keyindex);
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if (!scriptpubkey) {
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channel_internal_error(channel,
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"Can't get shutdown script %"PRIu64,
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keyindex);
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tal_free(tmpctx);
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return DELETE_WATCH;
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}
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txfilter_add_scriptpubkey(ld->owned_txfilter, scriptpubkey);
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if (!bip32_pubkey(ld->wallet->bip32_base, &ourkey, keyindex)) {
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channel_internal_error(channel,
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"Can't get shutdown key %"PRIu64,
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keyindex);
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tal_free(tmpctx);
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return DELETE_WATCH;
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}
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/* This could be a mutual close, but it doesn't matter. */
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bitcoin_txid(channel->last_tx, &our_last_txid);
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msg = towire_onchain_init(channel,
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&channel->seed, &channel->their_shachain.chain,
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channel->funding_satoshi,
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&channel->channel_info.old_remote_per_commit,
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&channel->channel_info.remote_per_commit,
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/* BOLT #2:
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* `to_self_delay` is the number of blocks
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* that the other nodes to-self outputs
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* must be delayed */
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/* So, these are reversed: they specify ours,
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* we specify theirs. */
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channel->channel_info.their_config.to_self_delay,
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channel->our_config.to_self_delay,
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get_feerate(ld->topology, FEERATE_NORMAL),
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channel->our_config.dust_limit_satoshis,
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&channel->channel_info.theirbase.revocation,
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&our_last_txid,
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scriptpubkey,
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channel->remote_shutdown_scriptpubkey,
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&ourkey,
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channel->funder,
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&channel->channel_info.theirbase.payment,
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&channel->channel_info.theirbase.htlc,
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&channel->channel_info.theirbase.delayed_payment,
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tx,
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block->height,
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/* FIXME: config for 'reasonable depth' */
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3,
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channel->last_htlc_sigs,
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tal_count(stubs));
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subd_send_msg(channel->owner, take(msg));
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/* FIXME: Don't queue all at once, use an empty cb... */
|
||||
for (size_t i = 0; i < tal_count(stubs); i++) {
|
||||
bool tell_immediate;
|
||||
bool tell = tell_if_missing(channel, &stubs[i], &tell_immediate);
|
||||
msg = towire_onchain_htlc(channel, &stubs[i],
|
||||
tell, tell_immediate);
|
||||
subd_send_msg(channel->owner, take(msg));
|
||||
}
|
||||
|
||||
watch_tx_and_outputs(channel, tx);
|
||||
|
||||
tal_free(tmpctx);
|
||||
/* We keep watching until peer finally deleted, for reorgs. */
|
||||
return KEEP_WATCHING;
|
||||
}
|
||||
|
||||
|
|
@ -0,0 +1,16 @@
|
|||
#ifndef LIGHTNING_LIGHTNINGD_ONCHAIN_CONTROL_H
|
||||
#define LIGHTNING_LIGHTNINGD_ONCHAIN_CONTROL_H
|
||||
#include "config.h"
|
||||
#include <ccan/short_types/short_types.h>
|
||||
|
||||
struct channel;
|
||||
struct bitcoin_tx;
|
||||
struct block;
|
||||
|
||||
enum watch_result funding_spent(struct channel *channel,
|
||||
const struct bitcoin_tx *tx,
|
||||
size_t input_num,
|
||||
const struct block *block,
|
||||
void *unused);
|
||||
|
||||
#endif /* LIGHTNING_LIGHTNINGD_ONCHAIN_CONTROL_H */
|
||||
|
|
@ -34,11 +34,10 @@
|
|||
#include <lightningd/jsonrpc.h>
|
||||
#include <lightningd/log.h>
|
||||
#include <lightningd/netaddress.h>
|
||||
#include <lightningd/onchain_control.h>
|
||||
#include <lightningd/opening_control.h>
|
||||
#include <lightningd/options.h>
|
||||
#include <lightningd/peer_htlcs.h>
|
||||
#include <onchaind/gen_onchain_wire.h>
|
||||
#include <onchaind/onchain_wire.h>
|
||||
#include <unistd.h>
|
||||
#include <wally_bip32.h>
|
||||
#include <wire/gen_onion_wire.h>
|
||||
|
|
@ -660,213 +659,6 @@ static enum watch_result funding_announce_cb(struct channel *channel,
|
|||
return DELETE_WATCH;
|
||||
}
|
||||
|
||||
|
||||
/* We dump all the known preimages when onchaind starts up. */
|
||||
static void onchaind_tell_fulfill(struct channel *channel)
|
||||
{
|
||||
struct htlc_in_map_iter ini;
|
||||
struct htlc_in *hin;
|
||||
u8 *msg;
|
||||
struct lightningd *ld = channel->peer->ld;
|
||||
|
||||
for (hin = htlc_in_map_first(&ld->htlcs_in, &ini);
|
||||
hin;
|
||||
hin = htlc_in_map_next(&ld->htlcs_in, &ini)) {
|
||||
if (hin->key.channel != channel)
|
||||
continue;
|
||||
|
||||
/* BOLT #5:
|
||||
*
|
||||
* If the node receives (or already knows) a payment preimage
|
||||
* for an unresolved HTLC output it was offered for which it
|
||||
* has committed to an outgoing HTLC, it MUST *resolve* the
|
||||
* output by spending it. Otherwise, if the other node is not
|
||||
* irrevocably committed to the HTLC, it MUST NOT *resolve*
|
||||
* the output by spending it.
|
||||
*/
|
||||
|
||||
/* We only set preimage once it's irrevocably committed, and
|
||||
* we spend even if we don't have an outgoing HTLC (eg. local
|
||||
* payment complete) */
|
||||
if (!hin->preimage)
|
||||
continue;
|
||||
|
||||
msg = towire_onchain_known_preimage(channel, hin->preimage);
|
||||
subd_send_msg(channel->owner, take(msg));
|
||||
}
|
||||
}
|
||||
|
||||
static void handle_onchain_init_reply(struct channel *channel, const u8 *msg)
|
||||
{
|
||||
u8 state;
|
||||
|
||||
if (!fromwire_onchain_init_reply(msg, NULL, &state)) {
|
||||
channel_internal_error(channel, "Invalid onchain_init_reply");
|
||||
return;
|
||||
}
|
||||
|
||||
if (!channel_state_on_chain(state)) {
|
||||
channel_internal_error(channel,
|
||||
"Invalid onchain_init_reply state %u (%s)",
|
||||
state, channel_state_str(state));
|
||||
return;
|
||||
}
|
||||
|
||||
channel_set_state(channel, FUNDING_SPEND_SEEN, state);
|
||||
|
||||
/* Tell it about any preimages we know. */
|
||||
onchaind_tell_fulfill(channel);
|
||||
}
|
||||
|
||||
static enum watch_result onchain_tx_watched(struct channel *channel,
|
||||
const struct bitcoin_tx *tx,
|
||||
unsigned int depth,
|
||||
void *unused)
|
||||
{
|
||||
u8 *msg;
|
||||
struct bitcoin_txid txid;
|
||||
|
||||
if (depth == 0) {
|
||||
log_unusual(channel->log, "Chain reorganization!");
|
||||
channel_set_owner(channel, NULL);
|
||||
|
||||
/* FIXME!
|
||||
topology_rescan(peer->ld->topology, peer->funding_txid);
|
||||
*/
|
||||
|
||||
/* We will most likely be freed, so this is a noop */
|
||||
return KEEP_WATCHING;
|
||||
}
|
||||
|
||||
bitcoin_txid(tx, &txid);
|
||||
msg = towire_onchain_depth(channel, &txid, depth);
|
||||
subd_send_msg(channel->owner, take(msg));
|
||||
return KEEP_WATCHING;
|
||||
}
|
||||
|
||||
static void watch_tx_and_outputs(struct channel *channel,
|
||||
const struct bitcoin_tx *tx);
|
||||
|
||||
static enum watch_result onchain_txo_watched(struct channel *channel,
|
||||
const struct bitcoin_tx *tx,
|
||||
size_t input_num,
|
||||
const struct block *block,
|
||||
void *unused)
|
||||
{
|
||||
u8 *msg;
|
||||
|
||||
watch_tx_and_outputs(channel, tx);
|
||||
|
||||
msg = towire_onchain_spent(channel, tx, input_num, block->height);
|
||||
subd_send_msg(channel->owner, take(msg));
|
||||
|
||||
/* We don't need to keep watching: If this output is double-spent
|
||||
* (reorg), we'll get a zero depth cb to onchain_tx_watched, and
|
||||
* restart onchaind. */
|
||||
return DELETE_WATCH;
|
||||
}
|
||||
|
||||
/* To avoid races, we watch the tx and all outputs. */
|
||||
static void watch_tx_and_outputs(struct channel *channel,
|
||||
const struct bitcoin_tx *tx)
|
||||
{
|
||||
struct bitcoin_txid txid;
|
||||
struct txwatch *txw;
|
||||
struct lightningd *ld = channel->peer->ld;
|
||||
|
||||
bitcoin_txid(tx, &txid);
|
||||
|
||||
/* Make txwatch a parent of txo watches, so we can unwatch together. */
|
||||
txw = watch_tx(channel->owner, ld->topology, channel, tx,
|
||||
onchain_tx_watched, NULL);
|
||||
|
||||
for (size_t i = 0; i < tal_count(tx->output); i++)
|
||||
watch_txo(txw, ld->topology, channel, &txid, i,
|
||||
onchain_txo_watched, NULL);
|
||||
}
|
||||
|
||||
static void handle_onchain_broadcast_tx(struct channel *channel, const u8 *msg)
|
||||
{
|
||||
struct bitcoin_tx *tx;
|
||||
|
||||
if (!fromwire_onchain_broadcast_tx(msg, msg, NULL, &tx)) {
|
||||
channel_internal_error(channel, "Invalid onchain_broadcast_tx");
|
||||
return;
|
||||
}
|
||||
|
||||
/* We don't really care if it fails, we'll respond via watch. */
|
||||
broadcast_tx(channel->peer->ld->topology, channel, tx, NULL);
|
||||
}
|
||||
|
||||
static void handle_onchain_unwatch_tx(struct channel *channel, const u8 *msg)
|
||||
{
|
||||
struct bitcoin_txid txid;
|
||||
struct txwatch *txw;
|
||||
|
||||
if (!fromwire_onchain_unwatch_tx(msg, NULL, &txid)) {
|
||||
channel_internal_error(channel, "Invalid onchain_unwatch_tx");
|
||||
return;
|
||||
}
|
||||
|
||||
/* Frees the txo watches, too: see watch_tx_and_outputs() */
|
||||
txw = find_txwatch(channel->peer->ld->topology, &txid, channel);
|
||||
if (!txw)
|
||||
log_unusual(channel->log, "Can't unwatch txid %s",
|
||||
type_to_string(ltmp, struct bitcoin_txid, &txid));
|
||||
tal_free(txw);
|
||||
}
|
||||
|
||||
static void handle_extracted_preimage(struct channel *channel, const u8 *msg)
|
||||
{
|
||||
struct preimage preimage;
|
||||
|
||||
if (!fromwire_onchain_extracted_preimage(msg, NULL, &preimage)) {
|
||||
channel_internal_error(channel, "Invalid extracted_preimage");
|
||||
return;
|
||||
}
|
||||
|
||||
onchain_fulfilled_htlc(channel, &preimage);
|
||||
}
|
||||
|
||||
static void handle_missing_htlc_output(struct channel *channel, const u8 *msg)
|
||||
{
|
||||
struct htlc_stub htlc;
|
||||
|
||||
if (!fromwire_onchain_missing_htlc_output(msg, NULL, &htlc)) {
|
||||
channel_internal_error(channel, "Invalid missing_htlc_output");
|
||||
return;
|
||||
}
|
||||
|
||||
/* BOLT #5:
|
||||
*
|
||||
* For any committed HTLC which does not have an output in this
|
||||
* commitment transaction, the node MUST fail the corresponding
|
||||
* incoming HTLC (if any) once the commitment transaction has reached
|
||||
* reasonable depth, and MAY fail it sooner if no valid commitment
|
||||
* transaction contains an output corresponding to the HTLC.
|
||||
*/
|
||||
onchain_failed_our_htlc(channel, &htlc, "missing in commitment tx");
|
||||
}
|
||||
|
||||
static void handle_onchain_htlc_timeout(struct channel *channel, const u8 *msg)
|
||||
{
|
||||
struct htlc_stub htlc;
|
||||
|
||||
if (!fromwire_onchain_htlc_timeout(msg, NULL, &htlc)) {
|
||||
channel_internal_error(channel, "Invalid onchain_htlc_timeout");
|
||||
return;
|
||||
}
|
||||
|
||||
/* BOLT #5:
|
||||
*
|
||||
* If the HTLC output has *timed out* and not been *resolved*, the node
|
||||
* MUST *resolve* the output and MUST fail the corresponding incoming
|
||||
* HTLC (if any) once the resolving transaction has reached reasonable
|
||||
* depth.
|
||||
*/
|
||||
onchain_failed_our_htlc(channel, &htlc, "timed out");
|
||||
}
|
||||
|
||||
/* If channel is NULL, free them all (for shutdown) */
|
||||
void free_htlcs(struct lightningd *ld, const struct channel *channel)
|
||||
{
|
||||
|
|
@ -901,90 +693,6 @@ void free_htlcs(struct lightningd *ld, const struct channel *channel)
|
|||
} while (deleted);
|
||||
}
|
||||
|
||||
static void handle_irrevocably_resolved(struct channel *channel, const u8 *msg)
|
||||
{
|
||||
/* FIXME: Implement check_htlcs to ensure no dangling hout->in ptrs! */
|
||||
free_htlcs(channel->peer->ld, channel);
|
||||
|
||||
log_info(channel->log, "onchaind complete, forgetting peer");
|
||||
|
||||
/* This will also free onchaind. */
|
||||
delete_channel(channel, "onchaind complete, forgetting peer");
|
||||
}
|
||||
|
||||
/**
|
||||
* onchain_add_utxo -- onchaind is telling us about an UTXO we own
|
||||
*/
|
||||
static void onchain_add_utxo(struct channel *channel, const u8 *msg)
|
||||
{
|
||||
struct utxo *u = tal(msg, struct utxo);
|
||||
u->close_info = tal(u, struct unilateral_close_info);
|
||||
|
||||
u->is_p2sh = true;
|
||||
u->keyindex = 0;
|
||||
u->status = output_state_available;
|
||||
u->close_info->channel_id = channel->dbid;
|
||||
u->close_info->peer_id = channel->peer->id;
|
||||
|
||||
if (!fromwire_onchain_add_utxo(msg, NULL, &u->txid, &u->outnum,
|
||||
&u->close_info->commitment_point,
|
||||
&u->amount)) {
|
||||
fatal("onchaind gave invalid add_utxo message: %s", tal_hex(msg, msg));
|
||||
}
|
||||
|
||||
|
||||
wallet_add_utxo(channel->peer->ld->wallet, u, p2wpkh);
|
||||
}
|
||||
|
||||
static unsigned int onchain_msg(struct subd *sd, const u8 *msg, const int *fds)
|
||||
{
|
||||
enum onchain_wire_type t = fromwire_peektype(msg);
|
||||
|
||||
switch (t) {
|
||||
case WIRE_ONCHAIN_INIT_REPLY:
|
||||
handle_onchain_init_reply(sd->channel, msg);
|
||||
break;
|
||||
|
||||
case WIRE_ONCHAIN_BROADCAST_TX:
|
||||
handle_onchain_broadcast_tx(sd->channel, msg);
|
||||
break;
|
||||
|
||||
case WIRE_ONCHAIN_UNWATCH_TX:
|
||||
handle_onchain_unwatch_tx(sd->channel, msg);
|
||||
break;
|
||||
|
||||
case WIRE_ONCHAIN_EXTRACTED_PREIMAGE:
|
||||
handle_extracted_preimage(sd->channel, msg);
|
||||
break;
|
||||
|
||||
case WIRE_ONCHAIN_MISSING_HTLC_OUTPUT:
|
||||
handle_missing_htlc_output(sd->channel, msg);
|
||||
break;
|
||||
|
||||
case WIRE_ONCHAIN_HTLC_TIMEOUT:
|
||||
handle_onchain_htlc_timeout(sd->channel, msg);
|
||||
break;
|
||||
|
||||
case WIRE_ONCHAIN_ALL_IRREVOCABLY_RESOLVED:
|
||||
handle_irrevocably_resolved(sd->channel, msg);
|
||||
break;
|
||||
|
||||
case WIRE_ONCHAIN_ADD_UTXO:
|
||||
onchain_add_utxo(sd->channel, msg);
|
||||
break;
|
||||
|
||||
/* We send these, not receive them */
|
||||
case WIRE_ONCHAIN_INIT:
|
||||
case WIRE_ONCHAIN_SPENT:
|
||||
case WIRE_ONCHAIN_DEPTH:
|
||||
case WIRE_ONCHAIN_HTLC:
|
||||
case WIRE_ONCHAIN_KNOWN_PREIMAGE:
|
||||
break;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
u8 *p2wpkh_for_keyidx(const tal_t *ctx, struct lightningd *ld, u64 keyidx)
|
||||
{
|
||||
struct pubkey shutdownkey;
|
||||
|
|
@ -995,176 +703,6 @@ u8 *p2wpkh_for_keyidx(const tal_t *ctx, struct lightningd *ld, u64 keyidx)
|
|||
return scriptpubkey_p2wpkh(ctx, &shutdownkey);
|
||||
}
|
||||
|
||||
/* If we want to know if this HTLC is missing, return depth. */
|
||||
static bool tell_if_missing(const struct channel *channel,
|
||||
struct htlc_stub *stub,
|
||||
bool *tell_immediate)
|
||||
{
|
||||
struct htlc_out *hout;
|
||||
|
||||
/* Keep valgrind happy. */
|
||||
*tell_immediate = false;
|
||||
|
||||
/* Is it a current HTLC? */
|
||||
hout = find_htlc_out_by_ripemd(channel, &stub->ripemd);
|
||||
if (!hout)
|
||||
return false;
|
||||
|
||||
/* BOLT #5:
|
||||
*
|
||||
* For any committed HTLC which does not have an output in this
|
||||
* commitment transaction, the node MUST fail the corresponding
|
||||
* incoming HTLC (if any) once the commitment transaction has reached
|
||||
* reasonable depth, and MAY fail it sooner if no valid commitment
|
||||
* transaction contains an output corresponding to the HTLC.
|
||||
*/
|
||||
if (hout->hstate >= RCVD_ADD_REVOCATION
|
||||
&& hout->hstate < SENT_REMOVE_REVOCATION)
|
||||
*tell_immediate = true;
|
||||
|
||||
log_debug(channel->log,
|
||||
"We want to know if htlc %"PRIu64" is missing (%s)",
|
||||
hout->key.id, *tell_immediate ? "immediate" : "later");
|
||||
return true;
|
||||
}
|
||||
|
||||
/* Only error onchaind can get is if it dies. */
|
||||
static void onchain_error(struct channel *channel,
|
||||
int peer_fd, int gossip_fd,
|
||||
const struct crypto_state *cs,
|
||||
u64 gossip_index,
|
||||
const struct channel_id *channel_id,
|
||||
const char *desc,
|
||||
const u8 *err_for_them)
|
||||
{
|
||||
/* FIXME: re-launch? */
|
||||
log_broken(channel->log, "%s", desc);
|
||||
}
|
||||
|
||||
/* With a reorg, this can get called multiple times; each time we'll kill
|
||||
* onchaind (like any other owner), and restart */
|
||||
static enum watch_result funding_spent(struct channel *channel,
|
||||
const struct bitcoin_tx *tx,
|
||||
size_t input_num,
|
||||
const struct block *block,
|
||||
void *unused)
|
||||
{
|
||||
u8 *msg, *scriptpubkey;
|
||||
struct bitcoin_txid our_last_txid;
|
||||
s64 keyindex;
|
||||
struct pubkey ourkey;
|
||||
struct htlc_stub *stubs;
|
||||
const tal_t *tmpctx = tal_tmpctx(channel);
|
||||
struct lightningd *ld = channel->peer->ld;
|
||||
|
||||
channel_fail_permanent(channel, "Funding transaction spent");
|
||||
|
||||
/* We could come from almost any state. */
|
||||
channel_set_state(channel, channel->state, FUNDING_SPEND_SEEN);
|
||||
|
||||
channel_set_owner(channel, new_channel_subd(ld,
|
||||
"lightning_onchaind",
|
||||
channel,
|
||||
channel->log,
|
||||
onchain_wire_type_name,
|
||||
onchain_msg,
|
||||
onchain_error,
|
||||
NULL));
|
||||
|
||||
if (!channel->owner) {
|
||||
log_broken(channel->log, "Could not subdaemon onchain: %s",
|
||||
strerror(errno));
|
||||
tal_free(tmpctx);
|
||||
return KEEP_WATCHING;
|
||||
}
|
||||
|
||||
stubs = wallet_htlc_stubs(tmpctx, ld->wallet, channel);
|
||||
if (!stubs) {
|
||||
log_broken(channel->log, "Could not load htlc_stubs");
|
||||
tal_free(tmpctx);
|
||||
return KEEP_WATCHING;
|
||||
}
|
||||
|
||||
/* We re-use this key to send other outputs to. */
|
||||
if (channel->local_shutdown_idx >= 0)
|
||||
keyindex = channel->local_shutdown_idx;
|
||||
else {
|
||||
keyindex = wallet_get_newindex(ld);
|
||||
if (keyindex < 0) {
|
||||
log_broken(channel->log, "Could not get keyindex");
|
||||
tal_free(tmpctx);
|
||||
return KEEP_WATCHING;
|
||||
}
|
||||
}
|
||||
scriptpubkey = p2wpkh_for_keyidx(tmpctx, ld, keyindex);
|
||||
if (!scriptpubkey) {
|
||||
channel_internal_error(channel,
|
||||
"Can't get shutdown script %"PRIu64,
|
||||
keyindex);
|
||||
tal_free(tmpctx);
|
||||
return DELETE_WATCH;
|
||||
}
|
||||
txfilter_add_scriptpubkey(ld->owned_txfilter, scriptpubkey);
|
||||
|
||||
if (!bip32_pubkey(ld->wallet->bip32_base, &ourkey, keyindex)) {
|
||||
channel_internal_error(channel,
|
||||
"Can't get shutdown key %"PRIu64,
|
||||
keyindex);
|
||||
tal_free(tmpctx);
|
||||
return DELETE_WATCH;
|
||||
}
|
||||
|
||||
/* This could be a mutual close, but it doesn't matter. */
|
||||
bitcoin_txid(channel->last_tx, &our_last_txid);
|
||||
|
||||
msg = towire_onchain_init(channel,
|
||||
&channel->seed, &channel->their_shachain.chain,
|
||||
channel->funding_satoshi,
|
||||
&channel->channel_info.old_remote_per_commit,
|
||||
&channel->channel_info.remote_per_commit,
|
||||
/* BOLT #2:
|
||||
* `to_self_delay` is the number of blocks
|
||||
* that the other nodes to-self outputs
|
||||
* must be delayed */
|
||||
/* So, these are reversed: they specify ours,
|
||||
* we specify theirs. */
|
||||
channel->channel_info.their_config.to_self_delay,
|
||||
channel->our_config.to_self_delay,
|
||||
get_feerate(ld->topology, FEERATE_NORMAL),
|
||||
channel->our_config.dust_limit_satoshis,
|
||||
&channel->channel_info.theirbase.revocation,
|
||||
&our_last_txid,
|
||||
scriptpubkey,
|
||||
channel->remote_shutdown_scriptpubkey,
|
||||
&ourkey,
|
||||
channel->funder,
|
||||
&channel->channel_info.theirbase.payment,
|
||||
&channel->channel_info.theirbase.htlc,
|
||||
&channel->channel_info.theirbase.delayed_payment,
|
||||
tx,
|
||||
block->height,
|
||||
/* FIXME: config for 'reasonable depth' */
|
||||
3,
|
||||
channel->last_htlc_sigs,
|
||||
tal_count(stubs));
|
||||
subd_send_msg(channel->owner, take(msg));
|
||||
|
||||
/* FIXME: Don't queue all at once, use an empty cb... */
|
||||
for (size_t i = 0; i < tal_count(stubs); i++) {
|
||||
bool tell_immediate;
|
||||
bool tell = tell_if_missing(channel, &stubs[i], &tell_immediate);
|
||||
msg = towire_onchain_htlc(channel, &stubs[i],
|
||||
tell, tell_immediate);
|
||||
subd_send_msg(channel->owner, take(msg));
|
||||
}
|
||||
|
||||
watch_tx_and_outputs(channel, tx);
|
||||
|
||||
tal_free(tmpctx);
|
||||
/* We keep watching until peer finally deleted, for reorgs. */
|
||||
return KEEP_WATCHING;
|
||||
}
|
||||
|
||||
static enum watch_result funding_lockin_cb(struct channel *channel,
|
||||
const struct bitcoin_tx *tx,
|
||||
unsigned int depth,
|
||||
|
|
|
|||
|
|
@ -76,15 +76,6 @@ bool derive_basepoints(const struct privkey *seed UNNEEDED,
|
|||
/* Generated stub for extract_channel_id */
|
||||
bool extract_channel_id(const u8 *in_pkt UNNEEDED, struct channel_id *channel_id UNNEEDED)
|
||||
{ fprintf(stderr, "extract_channel_id called!\n"); abort(); }
|
||||
/* Generated stub for find_htlc_out_by_ripemd */
|
||||
struct htlc_out *find_htlc_out_by_ripemd(const struct channel *channel UNNEEDED,
|
||||
const struct ripemd160 *ripemd160 UNNEEDED)
|
||||
{ fprintf(stderr, "find_htlc_out_by_ripemd called!\n"); abort(); }
|
||||
/* Generated stub for find_txwatch */
|
||||
struct txwatch *find_txwatch(struct chain_topology *topo UNNEEDED,
|
||||
const struct bitcoin_txid *txid UNNEEDED,
|
||||
const struct channel *channel UNNEEDED)
|
||||
{ fprintf(stderr, "find_txwatch called!\n"); abort(); }
|
||||
/* Generated stub for fromwire_channel_got_funding_locked */
|
||||
bool fromwire_channel_got_funding_locked(const void *p UNNEEDED, size_t *plen UNNEEDED, struct pubkey *next_per_commit_point UNNEEDED)
|
||||
{ fprintf(stderr, "fromwire_channel_got_funding_locked called!\n"); abort(); }
|
||||
|
|
@ -106,27 +97,13 @@ bool fromwire_gossip_peer_connected(const tal_t *ctx UNNEEDED, const void *p UNN
|
|||
/* Generated stub for fromwire_hsm_client_hsmfd_reply */
|
||||
bool fromwire_hsm_client_hsmfd_reply(const void *p UNNEEDED, size_t *plen UNNEEDED)
|
||||
{ fprintf(stderr, "fromwire_hsm_client_hsmfd_reply called!\n"); abort(); }
|
||||
/* Generated stub for fromwire_onchain_add_utxo */
|
||||
bool fromwire_onchain_add_utxo(const void *p UNNEEDED, size_t *plen UNNEEDED, struct bitcoin_txid *prev_out_tx UNNEEDED, u32 *prev_out_index UNNEEDED, struct pubkey *per_commit_point UNNEEDED, u64 *value UNNEEDED)
|
||||
{ fprintf(stderr, "fromwire_onchain_add_utxo called!\n"); abort(); }
|
||||
/* Generated stub for fromwire_onchain_broadcast_tx */
|
||||
bool fromwire_onchain_broadcast_tx(const tal_t *ctx UNNEEDED, const void *p UNNEEDED, size_t *plen UNNEEDED, struct bitcoin_tx **tx UNNEEDED)
|
||||
{ fprintf(stderr, "fromwire_onchain_broadcast_tx called!\n"); abort(); }
|
||||
/* Generated stub for fromwire_onchain_extracted_preimage */
|
||||
bool fromwire_onchain_extracted_preimage(const void *p UNNEEDED, size_t *plen UNNEEDED, struct preimage *preimage UNNEEDED)
|
||||
{ fprintf(stderr, "fromwire_onchain_extracted_preimage called!\n"); abort(); }
|
||||
/* Generated stub for fromwire_onchain_htlc_timeout */
|
||||
bool fromwire_onchain_htlc_timeout(const void *p UNNEEDED, size_t *plen UNNEEDED, struct htlc_stub *htlc UNNEEDED)
|
||||
{ fprintf(stderr, "fromwire_onchain_htlc_timeout called!\n"); abort(); }
|
||||
/* Generated stub for fromwire_onchain_init_reply */
|
||||
bool fromwire_onchain_init_reply(const void *p UNNEEDED, size_t *plen UNNEEDED, u8 *state UNNEEDED)
|
||||
{ fprintf(stderr, "fromwire_onchain_init_reply called!\n"); abort(); }
|
||||
/* Generated stub for fromwire_onchain_missing_htlc_output */
|
||||
bool fromwire_onchain_missing_htlc_output(const void *p UNNEEDED, size_t *plen UNNEEDED, struct htlc_stub *htlc UNNEEDED)
|
||||
{ fprintf(stderr, "fromwire_onchain_missing_htlc_output called!\n"); abort(); }
|
||||
/* Generated stub for fromwire_onchain_unwatch_tx */
|
||||
bool fromwire_onchain_unwatch_tx(const void *p UNNEEDED, size_t *plen UNNEEDED, struct bitcoin_txid *txid UNNEEDED)
|
||||
{ fprintf(stderr, "fromwire_onchain_unwatch_tx called!\n"); abort(); }
|
||||
/* Generated stub for funding_spent */
|
||||
enum watch_result funding_spent(struct channel *channel UNNEEDED,
|
||||
const struct bitcoin_tx *tx UNNEEDED,
|
||||
size_t input_num UNNEEDED,
|
||||
const struct block *block UNNEEDED,
|
||||
void *unused UNNEEDED)
|
||||
{ fprintf(stderr, "funding_spent called!\n"); abort(); }
|
||||
/* Generated stub for get_chainparams */
|
||||
struct chainparams *get_chainparams(const struct lightningd *ld UNNEEDED)
|
||||
{ fprintf(stderr, "get_chainparams called!\n"); abort(); }
|
||||
|
|
@ -304,18 +281,6 @@ struct json_result *new_json_result(const tal_t *ctx UNNEEDED)
|
|||
/* Generated stub for null_response */
|
||||
struct json_result *null_response(const tal_t *ctx UNNEEDED)
|
||||
{ fprintf(stderr, "null_response called!\n"); abort(); }
|
||||
/* Generated stub for onchain_failed_our_htlc */
|
||||
void onchain_failed_our_htlc(const struct channel *channel UNNEEDED,
|
||||
const struct htlc_stub *htlc UNNEEDED,
|
||||
const char *why UNNEEDED)
|
||||
{ fprintf(stderr, "onchain_failed_our_htlc called!\n"); abort(); }
|
||||
/* Generated stub for onchain_fulfilled_htlc */
|
||||
void onchain_fulfilled_htlc(struct channel *channel UNNEEDED,
|
||||
const struct preimage *preimage UNNEEDED)
|
||||
{ fprintf(stderr, "onchain_fulfilled_htlc called!\n"); abort(); }
|
||||
/* Generated stub for onchain_wire_type_name */
|
||||
const char *onchain_wire_type_name(int e UNNEEDED)
|
||||
{ fprintf(stderr, "onchain_wire_type_name called!\n"); abort(); }
|
||||
/* Generated stub for peer_accept_channel */
|
||||
u8 *peer_accept_channel(struct lightningd *ld UNNEEDED,
|
||||
const struct pubkey *peer_id UNNEEDED,
|
||||
|
|
@ -415,21 +380,6 @@ u8 *towire_gossip_getpeers_request(const tal_t *ctx UNNEEDED, const struct pubke
|
|||
/* Generated stub for towire_hsm_client_hsmfd */
|
||||
u8 *towire_hsm_client_hsmfd(const tal_t *ctx UNNEEDED, const struct pubkey *pubkey UNNEEDED, u64 capabilities UNNEEDED)
|
||||
{ fprintf(stderr, "towire_hsm_client_hsmfd called!\n"); abort(); }
|
||||
/* Generated stub for towire_onchain_depth */
|
||||
u8 *towire_onchain_depth(const tal_t *ctx UNNEEDED, const struct bitcoin_txid *txid UNNEEDED, u32 depth UNNEEDED)
|
||||
{ fprintf(stderr, "towire_onchain_depth called!\n"); abort(); }
|
||||
/* Generated stub for towire_onchain_htlc */
|
||||
u8 *towire_onchain_htlc(const tal_t *ctx UNNEEDED, const struct htlc_stub *htlc UNNEEDED, bool tell_if_missing UNNEEDED, bool tell_immediately UNNEEDED)
|
||||
{ fprintf(stderr, "towire_onchain_htlc called!\n"); abort(); }
|
||||
/* Generated stub for towire_onchain_init */
|
||||
u8 *towire_onchain_init(const tal_t *ctx UNNEEDED, const struct privkey *seed UNNEEDED, const struct shachain *shachain UNNEEDED, u64 funding_amount_satoshi UNNEEDED, const struct pubkey *old_remote_per_commitment_point UNNEEDED, const struct pubkey *remote_per_commitment_point UNNEEDED, u32 local_to_self_delay UNNEEDED, u32 remote_to_self_delay UNNEEDED, u32 feerate_per_kw UNNEEDED, u64 local_dust_limit_satoshi UNNEEDED, const struct pubkey *remote_revocation_basepoint UNNEEDED, const struct bitcoin_txid *our_broadcast_txid UNNEEDED, const u8 *local_scriptpubkey UNNEEDED, const u8 *remote_scriptpubkey UNNEEDED, const struct pubkey *ourwallet_pubkey UNNEEDED, enum side funder UNNEEDED, const struct pubkey *remote_payment_basepoint UNNEEDED, const struct pubkey *remote_htlc_basepoint UNNEEDED, const struct pubkey *remote_delayed_payment_basepoint UNNEEDED, const struct bitcoin_tx *tx UNNEEDED, u32 tx_blockheight UNNEEDED, u32 reasonable_depth UNNEEDED, const secp256k1_ecdsa_signature *htlc_signature UNNEEDED, u64 num_htlcs UNNEEDED)
|
||||
{ fprintf(stderr, "towire_onchain_init called!\n"); abort(); }
|
||||
/* Generated stub for towire_onchain_known_preimage */
|
||||
u8 *towire_onchain_known_preimage(const tal_t *ctx UNNEEDED, const struct preimage *preimage UNNEEDED)
|
||||
{ fprintf(stderr, "towire_onchain_known_preimage called!\n"); abort(); }
|
||||
/* Generated stub for towire_onchain_spent */
|
||||
u8 *towire_onchain_spent(const tal_t *ctx UNNEEDED, const struct bitcoin_tx *tx UNNEEDED, u32 input_num UNNEEDED, u32 blockheight UNNEEDED)
|
||||
{ fprintf(stderr, "towire_onchain_spent called!\n"); abort(); }
|
||||
/* Generated stub for txfilter_add_scriptpubkey */
|
||||
void txfilter_add_scriptpubkey(struct txfilter *filter UNNEEDED, u8 *script UNNEEDED)
|
||||
{ fprintf(stderr, "txfilter_add_scriptpubkey called!\n"); abort(); }
|
||||
|
|
@ -440,17 +390,6 @@ bool unsupported_features(const u8 *gfeatures UNNEEDED, const u8 *lfeatures UNNE
|
|||
void update_per_commit_point(struct channel *channel UNNEEDED,
|
||||
const struct pubkey *per_commitment_point UNNEEDED)
|
||||
{ fprintf(stderr, "update_per_commit_point called!\n"); abort(); }
|
||||
/* Generated stub for watch_tx_ */
|
||||
struct txwatch *watch_tx_(const tal_t *ctx UNNEEDED,
|
||||
struct chain_topology *topo UNNEEDED,
|
||||
struct channel *channel UNNEEDED,
|
||||
const struct bitcoin_tx *tx UNNEEDED,
|
||||
enum watch_result (*cb)(struct channel *channel UNNEEDED,
|
||||
const struct bitcoin_tx * UNNEEDED,
|
||||
unsigned int depth UNNEEDED,
|
||||
void *) UNNEEDED,
|
||||
void *cbdata UNNEEDED)
|
||||
{ fprintf(stderr, "watch_tx_ called!\n"); abort(); }
|
||||
/* Generated stub for watch_txid_ */
|
||||
struct txwatch *watch_txid_(const tal_t *ctx UNNEEDED,
|
||||
struct chain_topology *topo UNNEEDED,
|
||||
|
|
|
|||
Loading…
Reference in New Issue