mirror of
https://github.com/ElementsProject/lightning.git
synced 2024-11-19 09:54:16 +01:00
127 lines
4.0 KiB
C
127 lines
4.0 KiB
C
#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/structeq/structeq.h>
|
|
#include "lightning.pb-c.h"
|
|
#include "anchor.h"
|
|
#include "bitcoin/base58.h"
|
|
#include "pkt.h"
|
|
#include "bitcoin/script.h"
|
|
#include "permute_tx.h"
|
|
#include "bitcoin/signature.h"
|
|
#include "commit_tx.h"
|
|
#include "bitcoin/pubkey.h"
|
|
#include "bitcoin/privkey.h"
|
|
#include "bitcoin/address.h"
|
|
#include "opt_bits.h"
|
|
#include "find_p2sh_out.h"
|
|
#include "protobuf_convert.h"
|
|
#include <unistd.h>
|
|
|
|
int main(int argc, char *argv[])
|
|
{
|
|
const tal_t *ctx = tal_arr(NULL, char, 0);
|
|
OpenChannel *o1, *o2;
|
|
struct bitcoin_tx *commit, *tx;
|
|
struct bitcoin_signature sig;
|
|
struct privkey privkey;
|
|
bool testnet;
|
|
struct pubkey pubkey1, pubkey2, outpubkey;
|
|
u8 *redeemscript;
|
|
struct sha256 rhash;
|
|
size_t i, p2sh_out;
|
|
u64 fee = 10000;
|
|
u32 locktime_seconds;
|
|
|
|
err_set_progname(argv[0]);
|
|
|
|
/* FIXME: If we've updated channel since, we need the final
|
|
* revocation hash we sent (either update_accept or update_complete) */
|
|
opt_register_noarg("--help|-h", opt_usage_and_exit,
|
|
"<commitment-tx> <open-channel-file1> <open-channel-file2> <my-privoutkey> <someaddress> [previous-updates]\n"
|
|
"Create the transaction to spend our commit transaction",
|
|
"Print this message.");
|
|
opt_register_arg("--fee=<bits>",
|
|
opt_set_bits, opt_show_bits, &fee,
|
|
"100's of satoshi to pay in transaction fee");
|
|
|
|
opt_parse(&argc, argv, opt_log_stderr_exit);
|
|
|
|
if (argc < 6)
|
|
opt_usage_exit_fail("Expected 5+ arguments");
|
|
|
|
commit = bitcoin_tx_from_file(ctx, argv[1]);
|
|
|
|
o1 = pkt_from_file(argv[2], PKT__PKT_OPEN)->open;
|
|
o2 = pkt_from_file(argv[3], PKT__PKT_OPEN)->open;
|
|
if (!proto_to_locktime(o1, &locktime_seconds))
|
|
errx(1, "Invalid locktime in o1");
|
|
|
|
/* We need our private key to spend commit output. */
|
|
if (!key_from_base58(argv[4], strlen(argv[4]), &testnet, &privkey, &pubkey1))
|
|
errx(1, "Invalid private key '%s'", argv[4]);
|
|
if (!testnet)
|
|
errx(1, "Private key '%s' not on testnet!", argv[4]);
|
|
|
|
if (!pubkey_from_hexstr(argv[5], &outpubkey))
|
|
errx(1, "Invalid bitcoin pubkey '%s'", argv[5]);
|
|
|
|
/* 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");
|
|
|
|
/* o1 gives us the revocation hash */
|
|
proto_to_sha256(o1->revocation_hash, &rhash);
|
|
|
|
/* Latest revocation hash comes from last update. */
|
|
for (i = 6; i < argc; i++) {
|
|
Update *u = pkt_from_file(argv[i], PKT__PKT_UPDATE)->update;
|
|
proto_to_sha256(u->revocation_hash, &rhash);
|
|
}
|
|
|
|
/* Create redeem script */
|
|
redeemscript = bitcoin_redeem_revocable(ctx, &pubkey1,
|
|
locktime_seconds,
|
|
&pubkey2, &rhash);
|
|
|
|
/* Now, create transaction to spend it. */
|
|
tx = bitcoin_tx(ctx, 1, 1);
|
|
bitcoin_txid(commit, &tx->input[0].txid);
|
|
p2sh_out = find_p2sh_out(commit, redeemscript);
|
|
tx->input[0].index = p2sh_out;
|
|
|
|
if (commit->output[p2sh_out].amount <= fee)
|
|
errx(1, "Amount of %llu won't exceed fee",
|
|
(unsigned long long)commit->output[p2sh_out].amount);
|
|
|
|
tx->output[0].amount = commit->output[p2sh_out].amount - fee;
|
|
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_single_sig(tx, redeemscript,
|
|
tal_count(redeemscript),
|
|
&sig);
|
|
tx->input[0].script_length = tal_count(tx->input[0].script);
|
|
|
|
/* Print it out in hex. */
|
|
if (!bitcoin_tx_write(STDOUT_FILENO, tx))
|
|
err(1, "Writing out transaction");
|
|
|
|
tal_free(ctx);
|
|
return 0;
|
|
}
|