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.
134 lines
4.4 KiB
134 lines
4.4 KiB
/* My example:
|
|
* ./check-commit-sig A-open.pb B-open.pb A-commit-sig.pb B-commit-sig.pb cUBCjrdJu8tfvM7FT8So6aqs6G6bZS1Cax6Rc9rFzYL6nYG4XNEC A-leak-anchor-sigs.pb B-leak-anchor-sigs.pb > A-commit.tx
|
|
* ./check-commit-sig B-open.pb A-open.pb B-commit-sig.pb A-commit-sig.pb cUBCjrdJu8tfvM7FT8So6aqs6G6bZS1Cax6Rc9rFzYL6nYG4XNEC B-leak-anchor-sigs.pb A-leak-anchor-sigs.pb > B-commit.tx
|
|
*/
|
|
#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 <ccan/read_write_all/read_write_all.h>
|
|
#include "lightning.pb-c.h"
|
|
#include "anchor.h"
|
|
#include "base58.h"
|
|
#include "pkt.h"
|
|
#include "bitcoin_script.h"
|
|
#include "permute_tx.h"
|
|
#include "signature.h"
|
|
#include "commit_tx.h"
|
|
#include "pubkey.h"
|
|
#include <openssl/ec.h>
|
|
#include <unistd.h>
|
|
|
|
int main(int argc, char *argv[])
|
|
{
|
|
const tal_t *ctx = tal_arr(NULL, char, 0);
|
|
struct sha256 revoke_preimage, revoke_hash;
|
|
OpenChannel *o1, *o2;
|
|
Pkt *pkt;
|
|
struct bitcoin_tx *commit, *tx;
|
|
u8 *tx_arr, *redeemscript, *p2sh;
|
|
size_t i;
|
|
struct pubkey pubkey1, pubkey2, outpubkey;
|
|
struct bitcoin_signature sig;
|
|
char *tx_hex;
|
|
EC_KEY *privkey;
|
|
bool testnet;
|
|
|
|
err_set_progname(argv[0]);
|
|
|
|
opt_register_noarg("--help|-h", opt_usage_and_exit,
|
|
"<commit-tx> <revocation-preimage> <final-privkey> <open-channel-file1> <open-channel-file2> <outpubkey>\n"
|
|
"Create a transaction which spends commit-tx's revocable output, and sends it P2SH to outpubkey",
|
|
"Print this message.");
|
|
|
|
opt_parse(&argc, argv, opt_log_stderr_exit);
|
|
|
|
if (argc != 7)
|
|
opt_usage_exit_fail("Expected 6 arguments");
|
|
|
|
commit = bitcoin_tx_from_file(ctx, argv[1]);
|
|
|
|
pkt = any_pkt_from_file(argv[2]);
|
|
switch (pkt->pkt_case) {
|
|
case PKT__PKT_UPDATE_SIGNATURE:
|
|
proto_to_sha256(pkt->update_signature->revocation_preimage,
|
|
&revoke_preimage);
|
|
break;
|
|
case PKT__PKT_UPDATE_COMPLETE:
|
|
proto_to_sha256(pkt->update_complete->revocation_preimage,
|
|
&revoke_preimage);
|
|
break;
|
|
default:
|
|
errx(1, "Expected update or update-complete in %s", argv[2]);
|
|
}
|
|
|
|
privkey = key_from_base58(argv[3], strlen(argv[3]), &testnet, &pubkey1);
|
|
if (!privkey)
|
|
errx(1, "Invalid private key '%s'", argv[3]);
|
|
if (!testnet)
|
|
errx(1, "Private key '%s' not on testnet!", argv[3]);
|
|
|
|
o1 = pkt_from_file(argv[4], PKT__PKT_OPEN)->open;
|
|
o2 = pkt_from_file(argv[5], PKT__PKT_OPEN)->open;
|
|
|
|
if (!pubkey_from_hexstr(argv[6], &outpubkey))
|
|
errx(1, "Invalid bitcoin pubkey '%s'", argv[6]);
|
|
|
|
/* Get pubkeys */
|
|
if (!proto_to_pubkey(o1->final, &pubkey2))
|
|
errx(1, "Invalid o1 final pubkey");
|
|
if (pubkey_len(&pubkey1) != pubkey_len(&pubkey2)
|
|
|| memcmp(pubkey1.key, pubkey2.key, pubkey_len(&pubkey2)) != 0)
|
|
errx(1, "o1 pubkey != this privkey");
|
|
if (!proto_to_pubkey(o2->final, &pubkey2))
|
|
errx(1, "Invalid o2 final pubkey");
|
|
|
|
/* Now, which commit output? Match redeem script. */
|
|
sha256(&revoke_hash, &revoke_preimage, sizeof(revoke_preimage));
|
|
redeemscript = bitcoin_redeem_revocable(ctx, &pubkey2,
|
|
o2->locktime_seconds,
|
|
&pubkey1, &revoke_hash);
|
|
p2sh = scriptpubkey_p2sh(ctx, redeemscript);
|
|
|
|
for (i = 0; i < commit->output_count; i++) {
|
|
if (commit->output[i].script_length != tal_count(p2sh))
|
|
continue;
|
|
if (memcmp(commit->output[i].script, p2sh, tal_count(p2sh)) == 0)
|
|
break;
|
|
}
|
|
if (i == commit->output_count)
|
|
errx(1, "No matching output in %s", argv[1]);
|
|
|
|
tx = bitcoin_tx(ctx, 1, 1);
|
|
bitcoin_txid(commit, &tx->input[0].txid);
|
|
tx->input[0].index = i;
|
|
|
|
tx->output[0].amount = commit->output[i].amount;
|
|
tx->output[0].script = scriptpubkey_p2sh(tx,
|
|
bitcoin_redeem_single(tx, &outpubkey));
|
|
tx->output[0].script_length = tal_count(tx->output[0].script);
|
|
|
|
/* Now get signature, to set up input script. */
|
|
if (!sign_tx_input(tx, tx, 0, redeemscript, tal_count(redeemscript),
|
|
privkey, &pubkey1, &sig.sig))
|
|
errx(1, "Could not sign tx");
|
|
sig.stype = SIGHASH_ALL;
|
|
tx->input[0].script = scriptsig_p2sh_revoke(tx, &revoke_preimage, &sig,
|
|
redeemscript,
|
|
tal_count(redeemscript));
|
|
tx->input[0].script_length = tal_count(tx->input[0].script);
|
|
|
|
/* Print it out in hex. */
|
|
tx_arr = linearize_tx(ctx, commit);
|
|
tx_hex = tal_arr(tx_arr, char, hex_str_size(tal_count(tx_arr)));
|
|
hex_encode(tx_arr, tal_count(tx_arr), tx_hex, tal_count(tx_hex));
|
|
|
|
if (!write_all(STDOUT_FILENO, tx_hex, strlen(tx_hex)))
|
|
err(1, "Writing out transaction");
|
|
|
|
tal_free(ctx);
|
|
return 0;
|
|
}
|
|
|
|
|