int main(int argc, char *argv[])
{
const tal_t *ctx = tal_arr(NULL, char, 0);
OpenChannel *o1, *o2;
struct bitcoin_tx *anchor, *close_tx;
struct sha256_double anchor_txid;
struct bitcoin_signature sig1, sig2;
struct pubkey pubkey1, pubkey2;
u8 *redeemscript, *tx_arr;
char *tx_hex;
CloseChannel *close;
CloseChannelComplete *closecomplete;
size_t i;
int64_t delta;
err_set_progname(argv[0]);
/* FIXME: Take update.pbs to adjust channel */
opt_register_noarg("--help|-h", opt_usage_and_exit,
"<anchor-tx> <open-channel-file1> <open-channel-file2> <close-protobuf> <close-complete-protobuf> [update-protobuf]...\n"
"Create the close transaction from the signatures",
"Print this message.");
opt_parse(&argc, argv, opt_log_stderr_exit);
if (argc < 6)
opt_usage_exit_fail("Expected 5+ arguments");
anchor = 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;
close = pkt_from_file(argv[4], PKT__PKT_CLOSE)->close;
closecomplete = pkt_from_file(argv[5], PKT__PKT_CLOSE_COMPLETE)->close_complete;
bitcoin_txid(anchor, &anchor_txid);
/* Pubkeys well-formed? */
if (!proto_to_pubkey(o1->anchor->pubkey, &pubkey1))
errx(1, "Invalid anchor-1 key");
if (!proto_to_pubkey(o2->anchor->pubkey, &pubkey2))
errx(1, "Invalid anchor-2 key");
/* Get delta by accumulting all the updates. */
delta = 0;
for (i = 6; i < argc; i++) {
Update *u = pkt_from_file(argv[i], PKT__PKT_UPDATE)->update;
delta += u->delta;
}
/* 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. */
close_tx = create_close_tx(ctx, o1, o2, delta, &anchor_txid,
find_p2sh_out(anchor, redeemscript));
/* 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(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. */
tx_arr = linearize_tx(ctx, close_tx);
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;
}
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;
u8 *redeemscript;
CloseChannel *close;
CloseChannelComplete *closecomplete;
uint64_t our_amount, their_amount;
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_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(o1->commit_key, &pubkey1))
errx(1, "Invalid o1 commit_key");
if (!proto_to_pubkey(o2->commit_key, &pubkey2))
errx(1, "Invalid o2 commit_key");
/* Get delta by accumulting all the updates. */
gather_updates(o1, o2, a, close->close_fee, argv + 6,
&our_amount, &their_amount,
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. */
close_tx = create_close_tx(ctx, o1, o2, a, our_amount, their_amount);
/* 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(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;
}
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 pkt *pkt;
struct signature sig;
struct privkey privkey;
bool testnet;
struct pubkey pubkey1, pubkey2;
u8 *redeemscript;
char *close_file = NULL;
u64 close_fee = 10000;
struct channel_state *cstate;
err_set_progname(argv[0]);
opt_register_arg("--complete=<close-msg-file>",
opt_set_charp, NULL, &close_file,
"Create a close_transaction_complete msg instead");
opt_register_noarg("--help|-h", opt_usage_and_exit,
"<open-channel-file1> <open-channel-file2> <anchor-file> <commit-privkey> [{+/-}update-protobuf]...\n"
"Create the signature needed for the close transaction",
"Print this message.");
opt_register_arg("--close-fee=<bits>",
opt_set_bits, opt_show_bits, &close_fee,
"100's of satoshi to pay for close tx");
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]);
if (close_file) {
CloseChannel *c;
c = pkt_from_file(close_file, PKT__PKT_CLOSE)->close;
close_fee = c->close_fee;
}
cstate = gather_updates(ctx, o1, o2, a, close_fee, argv + 5, NULL,
NULL, NULL, NULL);
/* Get pubkeys */
if (!proto_to_pubkey(o1->commit_key, &pubkey2))
errx(1, "Invalid o1 commit 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->commit_key, &pubkey2))
errx(1, "Invalid o2 commit pubkey");
/* This is what the anchor pays to. */
redeemscript = bitcoin_redeem_2of2(ctx, &pubkey1, &pubkey2);
close_tx = create_close_tx(ctx, o1, o2, a, cstate->a.pay, cstate->b.pay);
/* Sign it for them. */
sign_tx_input(ctx, close_tx, 0, redeemscript, tal_count(redeemscript),
&privkey, &pubkey1, &sig);
if (close_file)
pkt = close_channel_complete_pkt(ctx, &sig);
else
pkt = close_channel_pkt(ctx, close_fee, &sig);
if (!write_all(STDOUT_FILENO, pkt, pkt_totlen(pkt)))
err(1, "Writing out packet");
tal_free(ctx);
return 0;
}
