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.
89 lines
2.8 KiB
89 lines
2.8 KiB
/* My example:
|
|
* ./open-commit-sig A-open.pb B-open.pb cUBCjrdJu8tfvM7FT8So6aqs6G6bZS1Cax6Rc9rFzYL6nYG4XNEC A-leak-anchor-sigs.pb B-leak-anchor-sigs.pb > A-commit-sig.pb
|
|
* ./open-commit-sig B-open.pb A-open.pb cQXhbUnNRsFcdzTQwjbCrud5yVskHTEas7tZPUWoJYNk5htGQrpi B-leak-anchor-sigs.pb A-leak-anchor-sigs.pb > B-commit-sig.pb
|
|
*/
|
|
#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);
|
|
OpenChannel *o1, *o2;
|
|
struct bitcoin_tx *anchor, *commit;
|
|
struct sha256_double txid;
|
|
struct pkt *pkt;
|
|
struct signature *sig;
|
|
size_t *inmap, *outmap;
|
|
EC_KEY *privkey;
|
|
bool testnet;
|
|
struct pubkey pubkey;
|
|
|
|
err_set_progname(argv[0]);
|
|
|
|
opt_register_noarg("--help|-h", opt_usage_and_exit,
|
|
"<open-channel-file1> <open-channel-file2> <commit-privkey> <leak-anchor-sigs1> <leak-anchor-sigs2>\n"
|
|
"Create the signature needed for the commit transaction",
|
|
"Print this message.");
|
|
|
|
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;
|
|
|
|
privkey = key_from_base58(argv[3], strlen(argv[3]), &testnet, &pubkey);
|
|
if (!privkey)
|
|
errx(1, "Invalid private key '%s'", argv[3]);
|
|
if (!testnet)
|
|
errx(1, "Private key '%s' not on testnet!", argv[3]);
|
|
|
|
/* Create merged anchor transaction */
|
|
anchor = anchor_tx_create(ctx, o1, o2, &inmap, &outmap);
|
|
if (!anchor)
|
|
errx(1, "Failed transaction merge");
|
|
|
|
/* Get the transaction ID of the anchor. */
|
|
anchor_txid(anchor, argv[4], argv[5], inmap, &txid);
|
|
|
|
/* Now create THEIR commitment tx to spend 2/2 output of anchor. */
|
|
commit = create_commit_tx(ctx, o2, o1, &txid, outmap[0]);
|
|
|
|
/* If contributions don't exceed fees, this fails. */
|
|
if (!commit)
|
|
errx(1, "Contributions %llu & %llu vs fees %llu & %llu",
|
|
(long long)o1->anchor->total,
|
|
(long long)o2->anchor->total,
|
|
(long long)o1->commitment_fee,
|
|
(long long)o2->commitment_fee);
|
|
|
|
/* Sign it for them. */
|
|
sig = sign_tx_input(ctx, commit, 0, anchor->output[outmap[0]].script,
|
|
anchor->output[outmap[0]].script_length, privkey);
|
|
|
|
pkt = open_commit_sig_pkt(ctx, sig);
|
|
if (!write_all(STDOUT_FILENO, pkt,
|
|
sizeof(pkt->len) + le32_to_cpu(pkt->len)))
|
|
err(1, "Writing out packet");
|
|
|
|
tal_free(ctx);
|
|
return 0;
|
|
}
|
|
|
|
|