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lightningd: pass signed tx through to close callback.

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Thread the signed tx through so close's JSON return contains that,
rather than the unsigned channel->last_tx.

We have to split the "get cmd_id" from "resolve the close commands" though;
and of course, as before, we don't actually print the txids of multiple
transactions even though we may have multi in flight due to splice!

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Changelog-Fixed: JSON-RPC: `close` returns a `tx` field with witness data populated (i.e. signed).
Fixes: #6440
This commit is contained in:
Rusty Russell 2023-07-31 21:03:22 +09:30
parent d90a185188
commit e981a4f14a
6 changed files with 60 additions and 38 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

36
lightningd/closing_control.c
View File

@ -51,14 +51,15 @@ struct close_command {
/* Resolve a single close command. */
static void
resolve_one_close_command(struct close_command *cc, bool cooperative)
resolve_one_close_command(struct close_command *cc, bool cooperative,
const struct bitcoin_tx *close_tx)
{
struct json_stream *result = json_stream_success(cc->cmd);
json_add_tx(result, "tx", cc->channel->last_tx);
if (!invalid_last_tx(cc->channel->last_tx)) {
json_add_tx(result, "tx", close_tx);
if (!invalid_last_tx(close_tx)) {
struct bitcoin_txid txid;
bitcoin_txid(cc->channel->last_tx, &txid);
bitcoin_txid(close_tx, &txid);
json_add_txid(result, "txid", &txid);
}
if (cooperative)
@ -69,24 +70,31 @@ resolve_one_close_command(struct close_command *cc, bool cooperative)
was_pending(command_success(cc->cmd, result));
}
/* Resolve a close command for a channel that will be closed soon: returns
* the cmd_id of one, if any (allocated off ctx). */
const char *resolve_close_command(const tal_t *ctx,
struct lightningd *ld, struct channel *channel,
bool cooperative)
const char *cmd_id_from_close_command(const tal_t *ctx,
struct lightningd *ld, struct channel *channel)
{
struct close_command *cc;
list_for_each(&ld->close_commands, cc, list) {
if (cc->channel != channel)
continue;
return tal_strdup(ctx, cc->cmd->id);
}
return NULL;
}
/* Resolve a close command for a channel that will be closed soon. */
void resolve_close_command(struct lightningd *ld, struct channel *channel,
bool cooperative, const struct bitcoin_tx *close_tx)
{
struct close_command *cc;
struct close_command *n;
const char *cmd_id = NULL;
list_for_each_safe(&ld->close_commands, cc, n, list) {
if (cc->channel != channel)
continue;
if (!cmd_id)
cmd_id = tal_strdup(ctx, cc->cmd->id);
resolve_one_close_command(cc, cooperative);
resolve_one_close_command(cc, cooperative, close_tx);
}
return cmd_id;
}
/* Destroy the close command structure in reaction to the

12
lightningd/closing_control.h
View File

@ -8,11 +8,13 @@ struct channel;
struct lightningd;
struct peer_fd;
/* Resolve a close command for a channel that will be closed soon: returns
* the cmd_id of one, if any (allocated off ctx). */
const char *resolve_close_command(const tal_t *ctx,
struct lightningd *ld, struct channel *channel,
bool cooperative);
/* Find cmd_id for closing command, if any. */
const char *cmd_id_from_close_command(const tal_t *ctx,
struct lightningd *ld, struct channel *channel);
/* Resolve a close command for a channel that will be closed soon. */
void resolve_close_command(struct lightningd *ld, struct channel *channel,
bool cooperative, const struct bitcoin_tx *close_tx);
void peer_start_closingd(struct channel *channel,
struct peer_fd *peer_fd);

17
lightningd/peer_control.c
View File

@ -287,7 +287,8 @@ static bool commit_tx_send_finished(struct channel *channel,
return false;
}
static void sign_and_send_last(struct lightningd *ld,
static struct bitcoin_tx *sign_and_send_last(const tal_t *ctx,
struct lightningd *ld,
struct channel *channel,
const char *cmd_id,
const struct bitcoin_tx *last_tx,
@ -297,7 +298,7 @@ static void sign_and_send_last(struct lightningd *ld,
struct anchor_details *adet;
struct bitcoin_tx *tx;
tx = sign_last_tx(tmpctx, channel, last_tx, last_sig);
tx = sign_last_tx(ctx, channel, last_tx, last_sig);
bitcoin_txid(tx, &txid);
wallet_transaction_add(ld->wallet, tx->wtx, 0, 0);
@ -308,6 +309,8 @@ static void sign_and_send_last(struct lightningd *ld,
* if they beat us to the broadcast). */
broadcast_tx(ld->topology, channel, tx, cmd_id, false, 0,
commit_tx_send_finished, commit_tx_boost, take(adet));
return tx;
}
void drop_to_chain(struct lightningd *ld, struct channel *channel,
@ -317,7 +320,7 @@ void drop_to_chain(struct lightningd *ld, struct channel *channel,
const char *cmd_id;
/* If this was triggered by a close command, get a copy of the cmd id */
cmd_id = resolve_close_command(tmpctx, ld, channel, cooperative);
cmd_id = cmd_id_from_close_command(tmpctx, ld, channel);
/* BOLT #2:
*
@ -335,15 +338,19 @@ void drop_to_chain(struct lightningd *ld, struct channel *channel,
"Cannot broadcast our commitment tx:"
" it's invalid! (ancient channel?)");
} else {
struct bitcoin_tx *tx;
/* We need to drop *every* commitment transaction to chain */
if (!cooperative && !list_empty(&channel->inflights)) {
list_for_each(&channel->inflights, inflight, list)
sign_and_send_last(ld, channel, cmd_id,
tx = sign_and_send_last(tmpctx, ld, channel, cmd_id,
inflight->last_tx,
&inflight->last_sig);
} else
sign_and_send_last(ld, channel, cmd_id, channel->last_tx,
tx = sign_and_send_last(tmpctx, ld, channel, cmd_id, channel->last_tx,
&channel->last_sig);
resolve_close_command(ld, channel, cooperative, tx);
}
}

9
lightningd/test/run-invoice-select-inchan.c
View File

@ -132,6 +132,10 @@ void channel_update_reserve(struct channel *channel UNNEEDED,
struct channel_config *their_config UNNEEDED,
struct amount_sat funding_total UNNEEDED)
{ fprintf(stderr, "channel_update_reserve called!\n"); abort(); }
/* Generated stub for cmd_id_from_close_command */
const char *cmd_id_from_close_command(const tal_t *ctx UNNEEDED,
struct lightningd *ld UNNEEDED, struct channel *channel UNNEEDED)
{ fprintf(stderr, "cmd_id_from_close_command called!\n"); abort(); }
/* Generated stub for command_fail */
struct command_result *command_fail(struct command *cmd UNNEEDED, enum jsonrpc_errcode code UNNEEDED,
const char *fmt UNNEEDED, ...)
@ -841,9 +845,8 @@ bool pubkey_from_node_id(struct pubkey *key UNNEEDED, const struct node_id *id U
void report_subd_memleak(struct leak_detect *leak_detect UNNEEDED, struct subd *leaker UNNEEDED)
{ fprintf(stderr, "report_subd_memleak called!\n"); abort(); }
/* Generated stub for resolve_close_command */
const char *resolve_close_command(const tal_t *ctx UNNEEDED,
struct lightningd *ld UNNEEDED, struct channel *channel UNNEEDED,
bool cooperative UNNEEDED)
void resolve_close_command(struct lightningd *ld UNNEEDED, struct channel *channel UNNEEDED,
bool cooperative UNNEEDED, const struct bitcoin_tx *close_tx UNNEEDED)
{ fprintf(stderr, "resolve_close_command called!\n"); abort(); }
/* Generated stub for start_leak_request */
void start_leak_request(const struct subd_req *req UNNEEDED,

1
tests/test_closing.py
View File

@ -3872,7 +3872,6 @@ def test_htlc_no_force_close(node_factory, bitcoind, anchors):
# FIXME: l2 should complain!
@pytest.mark.xfail(strict=True)
@pytest.mark.developer("needs dev-no-reconnect")
def test_closing_tx_valid(node_factory, bitcoind):
l1, l2 = node_factory.line_graph(2, opts={'may_reconnect': True,

9
wallet/test/run-wallet.c
View File

@ -89,6 +89,10 @@ void channel_update_reserve(struct channel *channel UNNEEDED,
struct channel_config *their_config UNNEEDED,
struct amount_sat funding_total UNNEEDED)
{ fprintf(stderr, "channel_update_reserve called!\n"); abort(); }
/* Generated stub for cmd_id_from_close_command */
const char *cmd_id_from_close_command(const tal_t *ctx UNNEEDED,
struct lightningd *ld UNNEEDED, struct channel *channel UNNEEDED)
{ fprintf(stderr, "cmd_id_from_close_command called!\n"); abort(); }
/* Generated stub for command_fail */
struct command_result *command_fail(struct command *cmd UNNEEDED, enum jsonrpc_errcode code UNNEEDED,
const char *fmt UNNEEDED, ...)
@ -677,9 +681,8 @@ const u8 *psbt_fixup(const tal_t *ctx UNNEEDED, const u8 *psbtblob UNNEEDED)
void report_subd_memleak(struct leak_detect *leak_detect UNNEEDED, struct subd *leaker UNNEEDED)
{ fprintf(stderr, "report_subd_memleak called!\n"); abort(); }
/* Generated stub for resolve_close_command */
const char *resolve_close_command(const tal_t *ctx UNNEEDED,
struct lightningd *ld UNNEEDED, struct channel *channel UNNEEDED,
bool cooperative UNNEEDED)
void resolve_close_command(struct lightningd *ld UNNEEDED, struct channel *channel UNNEEDED,
bool cooperative UNNEEDED, const struct bitcoin_tx *close_tx UNNEEDED)
{ fprintf(stderr, "resolve_close_command called!\n"); abort(); }
/* Generated stub for rune_is_ours */
const char *rune_is_ours(struct lightningd *ld UNNEEDED, const struct rune *rune UNNEEDED)