mirror of
https://github.com/ElementsProject/lightning.git
synced 2024-11-20 10:39:49 +01:00
2255cb749d
And rename final to final_key to be clearer. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
105 lines
3.1 KiB
C
105 lines
3.1 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/read_write_all/read_write_all.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 "bitcoin/pubkey.h"
|
|
#include "bitcoin/privkey.h"
|
|
#include "close_tx.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 *anchor, *close_tx;
|
|
struct sha256_double anchor_txid;
|
|
struct pkt *pkt;
|
|
struct signature sig;
|
|
struct privkey privkey;
|
|
bool testnet, complete = false;
|
|
struct pubkey pubkey1, pubkey2;
|
|
u8 *redeemscript;
|
|
int64_t delta;
|
|
size_t i, anchor_out;
|
|
|
|
err_set_progname(argv[0]);
|
|
|
|
/* FIXME: Take update.pbs to adjust channel */
|
|
opt_register_noarg("--complete", opt_set_bool, &complete,
|
|
"Create a close_transaction_complete msg instead");
|
|
opt_register_noarg("--help|-h", opt_usage_and_exit,
|
|
"<anchor-tx> <open-channel-file1> <open-channel-file2> <commit-privkey> [update-protobuf]...\n"
|
|
"Create the signature needed for the close transaction",
|
|
"Print this message.");
|
|
|
|
opt_parse(&argc, argv, opt_log_stderr_exit);
|
|
|
|
if (argc < 5)
|
|
opt_usage_exit_fail("Expected 4+ 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;
|
|
|
|
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]);
|
|
|
|
bitcoin_txid(anchor, &anchor_txid);
|
|
|
|
/* Get delta by accumulting all the updates. */
|
|
delta = 0;
|
|
for (i = 5; i < argc; i++) {
|
|
Update *u = pkt_from_file(argv[i], PKT__PKT_UPDATE)->update;
|
|
delta += u->delta;
|
|
}
|
|
|
|
/* 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; figure out whick output. */
|
|
redeemscript = bitcoin_redeem_2of2(ctx, &pubkey1, &pubkey2);
|
|
|
|
/* Now create the close tx to spend 2/2 output of anchor. */
|
|
/* Assumes that updates are all from closer -> closee */
|
|
anchor_out = find_p2sh_out(anchor, redeemscript);
|
|
close_tx = create_close_tx(ctx, o1, o2, complete ? -delta : delta,
|
|
&anchor_txid,
|
|
anchor->output[anchor_out].amount,
|
|
anchor_out);
|
|
|
|
/* Sign it for them. */
|
|
sign_tx_input(ctx, close_tx, 0, redeemscript, tal_count(redeemscript),
|
|
&privkey, &pubkey1, &sig);
|
|
|
|
if (complete)
|
|
pkt = close_channel_complete_pkt(ctx, &sig);
|
|
else
|
|
pkt = close_channel_pkt(ctx, &sig);
|
|
if (!write_all(STDOUT_FILENO, pkt, pkt_totlen(pkt)))
|
|
err(1, "Writing out packet");
|
|
|
|
tal_free(ctx);
|
|
return 0;
|
|
}
|
|
|