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a4dfe3ad72
This shows where funds are going at any time (fees vs to each side). funding.c is mainly rewritten, and should be clearer now. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
129 lines
4.2 KiB
C
129 lines
4.2 KiB
C
#include <ccan/crypto/shachain/shachain.h>
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#include <ccan/short_types/short_types.h>
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#include <ccan/tal/tal.h>
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#include <ccan/opt/opt.h>
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#include <ccan/str/hex/hex.h>
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#include <ccan/err/err.h>
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#include <ccan/structeq/structeq.h>
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#include "lightning.pb-c.h"
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#include "bitcoin/base58.h"
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#include "pkt.h"
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#include "bitcoin/script.h"
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#include "permute_tx.h"
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#include "bitcoin/signature.h"
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#include "commit_tx.h"
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#include "bitcoin/pubkey.h"
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#include "bitcoin/privkey.h"
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#include "bitcoin/address.h"
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#include "opt_bits.h"
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#include "find_p2sh_out.h"
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#include "protobuf_convert.h"
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#include "test-cli/gather_updates.h"
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#include "funding.h"
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#include <unistd.h>
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int main(int argc, char *argv[])
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{
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const tal_t *ctx = tal_arr(NULL, char, 0);
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OpenChannel *o1, *o2;
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OpenAnchor *a;
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struct bitcoin_tx *commit, *tx;
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struct bitcoin_signature sig;
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struct privkey privkey;
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bool testnet;
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struct pubkey pubkey1, pubkey2, outpubkey;
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u8 *redeemscript;
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struct sha256 rhash;
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size_t p2sh_out;
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u64 fee = 10000;
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u32 locktime;
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err_set_progname(argv[0]);
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/* FIXME: If we've updated channel since, we need the final
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* revocation hash we sent (either update_accept or update_complete) */
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opt_register_noarg("--help|-h", opt_usage_and_exit,
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"<commitment-tx> <open-channel-file1> <open-channel-file2> <open-anchor-file> <my-privoutkey> <someaddress> [previous-updates]\n"
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"Create the transaction to spend our commit transaction",
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"Print this message.");
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opt_register_arg("--fee=<bits>",
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opt_set_bits, opt_show_bits, &fee,
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"100's of satoshi to pay in transaction fee");
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opt_parse(&argc, argv, opt_log_stderr_exit);
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if (argc < 6)
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opt_usage_exit_fail("Expected 5+ arguments");
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commit = bitcoin_tx_from_file(ctx, argv[1]);
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o1 = pkt_from_file(argv[2], PKT__PKT_OPEN)->open;
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o2 = pkt_from_file(argv[3], PKT__PKT_OPEN)->open;
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a = pkt_from_file(argv[4], PKT__PKT_OPEN_ANCHOR)->open_anchor;
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if (!proto_to_locktime(o2->locktime, &locktime))
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errx(1, "Invalid locktime in o2");
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/* We need our private key to spend commit output. */
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if (!key_from_base58(argv[5], strlen(argv[5]), &testnet, &privkey, &pubkey1))
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errx(1, "Invalid private key '%s'", argv[5]);
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if (!testnet)
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errx(1, "Private key '%s' not on testnet!", argv[5]);
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if (!pubkey_from_hexstr(argv[6], &outpubkey))
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errx(1, "Invalid bitcoin pubkey '%s'", argv[6]);
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/* Get pubkeys */
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if (!proto_to_pubkey(o1->final_key, &pubkey2))
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errx(1, "Invalid o1 final pubkey");
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if (pubkey_len(&pubkey1) != pubkey_len(&pubkey2)
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|| memcmp(pubkey1.key, pubkey2.key, pubkey_len(&pubkey2)) != 0)
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errx(1, "o1 pubkey != this privkey");
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if (!proto_to_pubkey(o2->final_key, &pubkey2))
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errx(1, "Invalid o2 final pubkey");
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/* We use this simply to get final revocation hash. */
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gather_updates(ctx, o1, o2, a, commit_fee(o1, o2), argv + 7,
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NULL, &rhash, NULL, NULL);
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/* Create redeem script */
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redeemscript = bitcoin_redeem_secret_or_delay(ctx, &pubkey1, locktime,
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&pubkey2, &rhash);
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/* Now, create transaction to spend it. */
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tx = bitcoin_tx(ctx, 1, 1);
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bitcoin_txid(commit, &tx->input[0].txid);
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p2sh_out = find_p2sh_out(commit, redeemscript);
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tx->input[0].index = p2sh_out;
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tx->input[0].input_amount = commit->output[p2sh_out].amount;
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tx->fee = fee;
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/* Sequence number is inverted timeout. */
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tx->input[0].sequence_number = ~locktime;
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if (commit->output[p2sh_out].amount <= fee)
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errx(1, "Amount of %llu won't exceed fee",
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(unsigned long long)commit->output[p2sh_out].amount);
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tx->output[0].amount = commit->output[p2sh_out].amount - fee;
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tx->output[0].script = scriptpubkey_p2sh(tx,
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bitcoin_redeem_single(tx, &outpubkey));
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tx->output[0].script_length = tal_count(tx->output[0].script);
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/* Now get signature, to set up input script. */
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if (!sign_tx_input(tx, tx, 0, redeemscript, tal_count(redeemscript),
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&privkey, &pubkey1, &sig.sig))
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errx(1, "Could not sign tx");
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sig.stype = SIGHASH_ALL;
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tx->input[0].script = scriptsig_p2sh_secret(tx, NULL, 0, &sig,
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redeemscript,
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tal_count(redeemscript));
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tx->input[0].script_length = tal_count(tx->input[0].script);
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/* Print it out in hex. */
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if (!bitcoin_tx_write(STDOUT_FILENO, tx))
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err(1, "Writing out transaction");
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tal_free(ctx);
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return 0;
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}
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