You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
109 lines
3.6 KiB
109 lines
3.6 KiB
#include <ccan/crypto/shachain/shachain.h>
|
|
#include <ccan/short_types/short_types.h>
|
|
#include <ccan/tal/tal.h>
|
|
#include <ccan/opt/opt.h>
|
|
#include <ccan/str/hex/hex.h>
|
|
#include <ccan/err/err.h>
|
|
#include "lightning.pb-c.h"
|
|
#include "bitcoin/base58.h"
|
|
#include "pkt.h"
|
|
#include "bitcoin/script.h"
|
|
#include "permute_tx.h"
|
|
#include "bitcoin/signature.h"
|
|
#include "bitcoin/pubkey.h"
|
|
#include "close_tx.h"
|
|
#include "find_p2sh_out.h"
|
|
#include "protobuf_convert.h"
|
|
#include "gather_updates.h"
|
|
#include "funding.h"
|
|
#include "version.h"
|
|
#include <unistd.h>
|
|
|
|
int main(int argc, char *argv[])
|
|
{
|
|
const tal_t *ctx = tal_arr(NULL, char, 0);
|
|
OpenChannel *o1, *o2;
|
|
OpenAnchor *a;
|
|
struct bitcoin_tx *close_tx;
|
|
struct bitcoin_signature sig1, sig2;
|
|
struct pubkey pubkey1, pubkey2, final1, final2;
|
|
struct sha256_double anchor_txid;
|
|
u8 *redeemscript;
|
|
CloseChannel *close;
|
|
CloseChannelComplete *closecomplete;
|
|
struct channel_state *cstate;
|
|
|
|
err_set_progname(argv[0]);
|
|
|
|
/* FIXME: Take update.pbs to adjust channel */
|
|
opt_register_noarg("--help|-h", opt_usage_and_exit,
|
|
"<open-channel-file1> <open-channel-file2> <open-anchor-file> <close-protobuf> <close-complete-protobuf> [update-protobuf]...\n"
|
|
"Create the close transaction from the signatures",
|
|
"Print this message.");
|
|
opt_register_version();
|
|
|
|
opt_parse(&argc, argv, opt_log_stderr_exit);
|
|
|
|
if (argc < 6)
|
|
opt_usage_exit_fail("Expected 5+ arguments");
|
|
|
|
o1 = pkt_from_file(argv[1], PKT__PKT_OPEN)->open;
|
|
o2 = pkt_from_file(argv[2], PKT__PKT_OPEN)->open;
|
|
a = pkt_from_file(argv[3], PKT__PKT_OPEN_ANCHOR)->open_anchor;
|
|
close = pkt_from_file(argv[4], PKT__PKT_CLOSE)->close;
|
|
closecomplete = pkt_from_file(argv[5], PKT__PKT_CLOSE_COMPLETE)->close_complete;
|
|
|
|
/* Pubkeys well-formed? */
|
|
if (!proto_to_pubkey(secp256k1_context_create(0),
|
|
o1->commit_key, &pubkey1))
|
|
errx(1, "Invalid o1 commit_key");
|
|
if (!proto_to_pubkey(secp256k1_context_create(0),
|
|
o2->commit_key, &pubkey2))
|
|
errx(1, "Invalid o2 commit_key");
|
|
if (!proto_to_pubkey(secp256k1_context_create(0),
|
|
o1->final_key, &final1))
|
|
errx(1, "Invalid o1 final pubkey");
|
|
if (!proto_to_pubkey(secp256k1_context_create(0),
|
|
o2->final_key, &final2))
|
|
errx(1, "Invalid o2 final pubkey");
|
|
|
|
/* Get delta by accumulting all the updates. */
|
|
cstate = gather_updates(ctx, o1, o2, a, close->close_fee, argv + 6,
|
|
NULL, NULL, NULL, NULL);
|
|
|
|
/* This is what the anchor pays to; figure out which output. */
|
|
redeemscript = bitcoin_redeem_2of2(ctx, &pubkey1, &pubkey2);
|
|
|
|
/* Now create the close tx to spend 2/2 output of anchor. */
|
|
proto_to_sha256(a->txid, &anchor_txid.sha);
|
|
close_tx = create_close_tx(secp256k1_context_create(0),
|
|
ctx, &final1, &final2,
|
|
&anchor_txid, a->output_index, a->amount,
|
|
cstate->a.pay_msat / 1000,
|
|
cstate->b.pay_msat / 1000);
|
|
|
|
/* Signatures well-formed? */
|
|
sig1.stype = sig2.stype = SIGHASH_ALL;
|
|
if (!proto_to_signature(close->sig, &sig1.sig))
|
|
errx(1, "Invalid close-packet");
|
|
if (!proto_to_signature(closecomplete->sig, &sig2.sig))
|
|
errx(1, "Invalid closecomplete-packet");
|
|
|
|
/* Combined signatures must validate correctly. */
|
|
if (!check_2of2_sig(secp256k1_context_create(SECP256K1_CONTEXT_VERIFY),
|
|
close_tx, 0, redeemscript, tal_count(redeemscript),
|
|
&pubkey1, &pubkey2, &sig1, &sig2))
|
|
errx(1, "Signature failed");
|
|
|
|
/* Create p2sh input for close_tx */
|
|
close_tx->input[0].script = scriptsig_p2sh_2of2(close_tx, &sig1, &sig2,
|
|
&pubkey1, &pubkey2);
|
|
close_tx->input[0].script_length = tal_count(close_tx->input[0].script);
|
|
|
|
/* Print it out in hex. */
|
|
if (!bitcoin_tx_write(STDOUT_FILENO, close_tx))
|
|
err(1, "Writing out transaction");
|
|
|
|
tal_free(ctx);
|
|
return 0;
|
|
}
|
|
|