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txprepare: add txsend functionality.

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Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell 2020-08-28 12:05:57 +09:30
parent 522459ba6e
commit 3b1a226f67
1 changed files with 79 additions and 0 deletions
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79
plugins/txprepare.c
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@ -360,6 +360,78 @@ static struct command_result *json_txdiscard(struct command *cmd,
return send_outreq(cmd->plugin, req); return send_outreq(cmd->plugin, req);
} }
/* Called after lightningd has broadcast the transaction. */
static struct command_result *sendpsbt_done(struct command *cmd,
const char *buf,
const jsmntok_t *result,
struct unreleased_tx *utx)
{
struct json_stream *out;
out = jsonrpc_stream_success(cmd);
json_add_hex_talarr(out, "tx", linearize_wtx(tmpctx, utx->tx));
json_add_txid(out, "txid", &utx->txid);
return command_finished(cmd, out);
}
/* Called after lightningd has signed the inputs. */
static struct command_result *signpsbt_done(struct command *cmd,
const char *buf,
const jsmntok_t *result,
struct unreleased_tx *utx)
{
struct out_req *req;
const jsmntok_t *psbttok = json_get_member(buf, result, "signed_psbt");
struct bitcoin_txid txid;
tal_free(utx->psbt);
utx->psbt = json_tok_psbt(utx, buf, psbttok);
/* Replace with signed tx. */
tal_free(utx->tx);
/* The txid from the final should match our expectation. */
psbt_txid(utx->psbt, &txid, &utx->tx);
if (!bitcoin_txid_eq(&txid, &utx->txid)) {
return command_fail(cmd, LIGHTNINGD,
"Signed tx changed txid? Had '%s' now '%s'",
tal_hex(tmpctx,
linearize_wtx(tmpctx, utx->tx)),
tal_hex(tmpctx,
linearize_wtx(tmpctx,
utx->psbt->tx)));
}
req = jsonrpc_request_start(cmd->plugin, cmd, "sendpsbt",
sendpsbt_done, forward_error,
utx);
json_add_psbt(req->js, "psbt", utx->psbt);
return send_outreq(cmd->plugin, req);
}
static struct command_result *json_txsend(struct command *cmd,
const char *buffer,
const jsmntok_t *params)
{
struct unreleased_tx *utx;
struct out_req *req;
if (!param(cmd, buffer, params,
p_req("txid", param_unreleased_txid, &utx),
NULL))
return command_param_failed();
/* Remove from list now, to avoid races! */
list_del_from(&unreleased_txs, &utx->list);
/* If things go wrong, free it. */
tal_steal(cmd, utx);
req = jsonrpc_request_start(cmd->plugin, cmd, "signpsbt",
signpsbt_done, forward_error,
utx);
json_add_psbt(req->js, "psbt", utx->psbt);
return send_outreq(cmd->plugin, req);
}
static const struct plugin_command commands[] = { static const struct plugin_command commands[] = {
{ {
"newtxprepare", "newtxprepare",
@ -375,6 +447,13 @@ static const struct plugin_command commands[] = {
"Discard a transcation by {txid}", "Discard a transcation by {txid}",
json_txdiscard json_txdiscard
}, },
{
"newtxsend",
"bitcoin",
"Send a transaction created by txprepare",
"Send a transacation by {txid}",
json_txsend
},
}; };
int main(int argc, char *argv[]) int main(int argc, char *argv[])