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#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 "bitcoin/base58.h"
#include "pkt.h"
#include "bitcoin/script.h"
#include "bitcoin/address.h"
#include "bitcoin/tx.h"
#include "bitcoin/pubkey.h"
#include "bitcoin/privkey.h"
#include "bitcoin/shadouble.h"
#include "protobuf_convert.h"
#include <unistd.h>
#include <time.h>
#include "opt_bits.h"
#include "version.h"
/* Bitcoin nodes are allowed to be 2 hours in the future. */
#define LOCKTIME_MIN (2 * 60 * 60)
/* Simple helper to open a channel. */
int main(int argc, char *argv[])
{
struct sha256 seed, revocation_hash;
struct pkt *pkt;
const tal_t *ctx = tal_arr(NULL, char, 0);
unsigned int locktime_seconds, min_confirms;
u64 commit_tx_fee;
bool offer_anchor = false;
struct pubkey commitkey, finalkey;
err_set_progname(argv[0]);
/* This means we have ~1 day before they can steal our money. */
locktime_seconds = LOCKTIME_MIN + 24 * 60 * 60;
/* Zero, unless they set --offer-anchor or --min-anchor-confirms */
min_confirms = 0;
/* We only need this for involuntary close, so make it larger. */
commit_tx_fee = 100000;
opt_register_noarg("--help|-h", opt_usage_and_exit,
"<seed> <commitpubkey> <finalpubkey>\n"
"A test program to output openchannel on stdout.",
"Print this message.");
opt_register_arg("--min-anchor-confirms",
opt_set_uintval, opt_show_uintval, &min_confirms,
"Number of anchor confirmations before channel is active");
opt_register_arg("--locktime=<seconds>",
opt_set_uintval, opt_show_uintval, &locktime_seconds,
"Seconds to lock out our transaction redemption");
opt_register_noarg("--offer-anchor",
opt_set_bool, &offer_anchor,
"Offer to create anchor transaction");
opt_register_arg("--commitment-fee=<bits>",
opt_set_bits, opt_show_bits, &commit_tx_fee,
"100's of satoshi to pay for commitment");
opt_register_version();
opt_parse(&argc, argv, opt_log_stderr_exit);
if (argc != 4)
opt_usage_exit_fail("Expected 3 arguments");
if (!hex_decode(argv[1], strlen(argv[1]), &seed, sizeof(seed)))
errx(1, "Invalid seed '%s' - need 256 hex bits", argv[1]);
if (!pubkey_from_hexstr(secp256k1_context_create(0),
argv[2], strlen(argv[2]), &commitkey))
errx(1, "Invalid commit key '%s'", argv[2]);
if (!pubkey_from_hexstr(secp256k1_context_create(0),
argv[3], strlen(argv[3]), &finalkey))
errx(1, "Invalid final key '%s'", argv[3]);
if (offer_anchor && min_confirms == 0)
min_confirms = 3;
/* Get first revocation hash. */
shachain_from_seed(&seed, 0, &revocation_hash);
sha256(&revocation_hash,
revocation_hash.u.u8, sizeof(revocation_hash.u.u8));
pkt = open_channel_pkt(ctx, &revocation_hash, &commitkey, &finalkey,
locktime_seconds,
offer_anchor
? OPEN_CHANNEL__ANCHOR_OFFER__WILL_CREATE_ANCHOR
: OPEN_CHANNEL__ANCHOR_OFFER__WONT_CREATE_ANCHOR,
min_confirms, commit_tx_fee);
if (!write_all(STDOUT_FILENO, pkt, pkt_totlen(pkt)))
err(1, "Writing out packet");
tal_free(ctx);
return 0;
}