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#include <assert.h>
#include <bitcoin/address.h>
#include <bitcoin/base58.h>
#include <bitcoin/privkey.h>
#include <bitcoin/pubkey.h>
#include <ccan/str/hex/hex.h>
#include <common/type_to_string.h>
#include <common/utils.h>
#include <inttypes.h>
#include <stdio.h>
#define SUPERVERBOSE printf
#include "../../common/funding_tx.c"
#undef SUPERVERBOSE
#include "../../common/key_derive.c"
#if 0
static struct sha256 sha256_from_hex(const char *hex)
{
struct sha256 sha256;
if (strstarts(hex, "0x"))
hex += 2;
if (!hex_decode(hex, strlen(hex), &sha256, sizeof(sha256)))
abort();
return sha256;
}
static struct privkey privkey_from_hex(const char *hex)
{
struct privkey pk;
size_t len;
if (strstarts(hex, "0x"))
hex += 2;
len = strlen(hex);
if (len == 66 && strends(hex, "01"))
len -= 2;
if (!hex_decode(hex, len, &pk, sizeof(pk)))
abort();
return pk;
}
#endif
int main(void)
{
tal_t *tmpctx = tal_tmpctx(NULL);
struct bitcoin_tx *input, *funding;
u64 fee;
struct pubkey local_funding_pubkey, remote_funding_pubkey;
struct privkey input_privkey;
struct pubkey inputkey;
bool testnet;
struct utxo utxo;
const struct utxo **utxomap = tal_arr(tmpctx, const struct utxo *, 1);
u64 funding_satoshis;
u16 funding_outnum;
u8 *subscript;
secp256k1_ecdsa_signature sig;
struct bitcoin_address addr;
secp256k1_ctx = secp256k1_context_create(SECP256K1_CONTEXT_VERIFY
| SECP256K1_CONTEXT_SIGN);
/* BOLT #3:
*
* Block 1 coinbase transaction: 01000000010000000000000000000000000000000000000000000000000000000000000000ffffffff03510101ffffffff0100f2052a010000001976a9143ca33c2e4446f4a305f23c80df8ad1afdcf652f988ac00000000
*/
input = bitcoin_tx_from_hex(tmpctx,
"01000000010000000000000000000000000000000000000000000000000000000000000000ffffffff03510101ffffffff0100f2052a010000001976a9143ca33c2e4446f4a305f23c80df8ad1afdcf652f988ac00000000",
strlen("01000000010000000000000000000000000000000000000000000000000000000000000000ffffffff03510101ffffffff0100f2052a010000001976a9143ca33c2e4446f4a305f23c80df8ad1afdcf652f988ac00000000"));
assert(input);
/* BOLT #3:
* Block 1 coinbase privkey: 6bd078650fcee8444e4e09825227b801a1ca928debb750eb36e6d56124bb20e801
* # privkey in base58: cRCH7YNcarfvaiY1GWUKQrRGmoezvfAiqHtdRvxe16shzbd7LDMz
*/
if (!key_from_base58("cRCH7YNcarfvaiY1GWUKQrRGmoezvfAiqHtdRvxe16shzbd7LDMz", strlen("cRCH7YNcarfvaiY1GWUKQrRGmoezvfAiqHtdRvxe16shzbd7LDMz"),
&testnet, &input_privkey, &inputkey))
abort();
assert(testnet);
printf("* Block 1 coinbase privkey: %s\n",
type_to_string(tmpctx, struct privkey, &input_privkey));
/* BOLT #3:
*
* The funding transaction is paid to the following keys:
*
* local_funding_pubkey: 023da092f6980e58d2c037173180e9a465476026ee50f96695963e8efe436f54eb
* remote_funding_pubkey: 030e9f7b623d2ccc7c9bd44d66d5ce21ce504c0acf6385a132cec6d3c39fa711c1
*/
if (!pubkey_from_hexstr("023da092f6980e58d2c037173180e9a465476026ee50f96695963e8efe436f54eb",
strlen("023da092f6980e58d2c037173180e9a465476026ee50f96695963e8efe436f54eb"),
&local_funding_pubkey))
abort();
if (!pubkey_from_hexstr("030e9f7b623d2ccc7c9bd44d66d5ce21ce504c0acf6385a132cec6d3c39fa711c1",
strlen("030e9f7b623d2ccc7c9bd44d66d5ce21ce504c0acf6385a132cec6d3c39fa711c1"),
&remote_funding_pubkey))
abort();
bitcoin_txid(input, &utxo.txid);
utxo.outnum = 0;
utxo.amount = 5000000000;
utxo.is_p2sh = false;
funding_satoshis = 10000000;
fee = 13920;
printf("input[0] txid: %s\n",
tal_hexstr(tmpctx, &utxo.txid, sizeof(utxo.txid)));
printf("input[0] input: %u\n", utxo.outnum);
printf("input[0] satoshis: %"PRIu64"\n", utxo.amount);
printf("funding satoshis: %"PRIu64"\n", funding_satoshis);
utxomap[0] = &utxo;
funding = funding_tx(tmpctx, &funding_outnum, utxomap,
funding_satoshis,
&local_funding_pubkey,
&remote_funding_pubkey,
utxo.amount - fee - funding_satoshis,
&inputkey, NULL);
printf("# fee: %"PRIu64"\n", fee);
printf("change satoshis: %"PRIu64"\n",
funding->output[!funding_outnum].amount);
printf("funding output: %u\n", funding_outnum);
pubkey_to_hash160(&inputkey, &addr.addr);
subscript = scriptpubkey_p2pkh(funding, &addr);
sign_tx_input(funding, 0, subscript, NULL, &input_privkey, &inputkey,
&sig);
funding->input[0].script = bitcoin_redeem_p2pkh(funding, &inputkey,
&sig);
printf("funding tx: %s\n",
tal_hex(tmpctx, linearize_tx(tmpctx, funding)));
/* No memory leaks please */
secp256k1_context_destroy(secp256k1_ctx);
tal_free(tmpctx);
return 0;
}