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.
103 lines
3.1 KiB
103 lines
3.1 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 "commit_tx.h"
|
|
#include "bitcoin/pubkey.h"
|
|
#include "bitcoin/privkey.h"
|
|
#include "find_p2sh_out.h"
|
|
#include "protobuf_convert.h"
|
|
#include "gather_updates.h"
|
|
#include "funding.h"
|
|
#include "version.h"
|
|
#include <unistd.h>
|
|
|
|
/* FIXME: this code doesn't work if we're not the ones proposing the delta */
|
|
int main(int argc, char *argv[])
|
|
{
|
|
const tal_t *ctx = tal_arr(NULL, char, 0);
|
|
OpenChannel *o1, *o2;
|
|
OpenAnchor *a;
|
|
struct bitcoin_tx *commit;
|
|
struct privkey privkey;
|
|
bool testnet;
|
|
struct bitcoin_signature sig1, sig2;
|
|
struct pubkey pubkey1, pubkey2;
|
|
u8 *redeemscript;
|
|
struct sha256 rhash;
|
|
struct channel_state *cstate;
|
|
|
|
err_set_progname(argv[0]);
|
|
|
|
opt_register_noarg("--help|-h", opt_usage_and_exit,
|
|
"<open-channel-file1> <open-channel-file2> <open-anchor-file> <commit-privkey> [<updates>]\n"
|
|
"Create the signature needed for the commit transaction",
|
|
"Print this message.");
|
|
opt_register_version();
|
|
|
|
opt_parse(&argc, argv, opt_log_stderr_exit);
|
|
|
|
if (argc < 5)
|
|
opt_usage_exit_fail("Expected 4+ 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;
|
|
|
|
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]);
|
|
|
|
/* Get pubkeys */
|
|
if (!proto_to_pubkey(o1->commit_key, &pubkey2))
|
|
errx(1, "Invalid o1 commit pubkey");
|
|
if (!pubkey_eq(&pubkey1, &pubkey2))
|
|
errx(1, "o1 pubkey != this privkey");
|
|
if (!proto_to_pubkey(o2->commit_key, &pubkey2))
|
|
errx(1, "Invalid o2 commit pubkey");
|
|
|
|
sig2.stype = SIGHASH_ALL;
|
|
|
|
cstate = gather_updates(ctx, o1, o2, a, commit_fee(o1, o2), argv + 5,
|
|
NULL, &rhash, NULL, &sig2.sig);
|
|
|
|
redeemscript = bitcoin_redeem_2of2(ctx, &pubkey1, &pubkey2);
|
|
|
|
/* Now create commitment tx to spend 2/2 output of anchor. */
|
|
commit = create_commit_tx(ctx, o1, o2, a, &rhash, cstate);
|
|
|
|
/* This only fails on malformed packets */
|
|
if (!commit)
|
|
errx(1, "Malformed packets");
|
|
|
|
/* We generate our signature. */
|
|
sig1.stype = SIGHASH_ALL;
|
|
sign_tx_input(ctx, commit, 0, redeemscript, tal_count(redeemscript),
|
|
&privkey, &pubkey1, &sig1.sig);
|
|
|
|
/* Check it works with theirs... */
|
|
if (!check_2of2_sig(commit, 0, redeemscript, tal_count(redeemscript),
|
|
&pubkey1, &pubkey2, &sig1, &sig2))
|
|
errx(1, "Signature failed");
|
|
|
|
/* Create p2sh input for commit */
|
|
commit->input[0].script = scriptsig_p2sh_2of2(commit, &sig1, &sig2,
|
|
&pubkey1, &pubkey2);
|
|
commit->input[0].script_length = tal_count(commit->input[0].script);
|
|
|
|
/* Print it out in hex. */
|
|
if (!bitcoin_tx_write(STDOUT_FILENO, commit))
|
|
err(1, "Writing out transaction");
|
|
|
|
tal_free(ctx);
|
|
return 0;
|
|
}
|
|
|