91 lines
2.6 KiB
C
91 lines
2.6 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 "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 "protobuf_convert.h"
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#include "funding.h"
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#include "version.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;
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u8 *subscript;
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struct pubkey pubkey1, pubkey2;
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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 sha256 rhash;
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struct channel_state *cstate;
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err_set_progname(argv[0]);
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opt_register_noarg("--help|-h", opt_usage_and_exit,
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"<open-channel-file1> <open-channel-file2> <open-anchor-file1> <commit-key1> [<commit-sig>]\n"
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"Check the commit sig is valid (either in open-anchor or commit-sig packet)",
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"Print this message.");
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opt_register_version();
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opt_parse(&argc, argv, opt_log_stderr_exit);
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if (argc != 5 && argc != 6)
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opt_usage_exit_fail("Expected 4 or 5 arguments");
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o1 = pkt_from_file(argv[1], PKT__PKT_OPEN)->open;
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o2 = pkt_from_file(argv[2], PKT__PKT_OPEN)->open;
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a = pkt_from_file(argv[3], PKT__PKT_OPEN_ANCHOR)->open_anchor;
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if (!key_from_base58(argv[4], strlen(argv[4]), &testnet, &privkey, &pubkey1))
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errx(1, "Invalid private key '%s'", argv[4]);
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if (!testnet)
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errx(1, "Private key '%s' not on testnet!", argv[4]);
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sig.stype = SIGHASH_ALL;
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if (argc == 6) {
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OpenCommitSig *cs = pkt_from_file(argv[5],
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PKT__PKT_OPEN_COMMIT_SIG)
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->open_commit_sig;
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if (!proto_to_signature(cs->sig, &sig.sig))
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errx(1, "Bad signature in %s", argv[5]);
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} else {
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if (!proto_to_signature(a->commit_sig, &sig.sig))
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errx(1, "Bad signature in %s", argv[3]);
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}
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/* Pubkey well-formed? */
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if (!proto_to_pubkey(o2->commit_key, &pubkey2))
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errx(1, "Invalid o2 commit_key");
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cstate = initial_funding(ctx, o1, o2, a, commit_fee(o1, o2));
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if (!cstate)
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errx(1, "Invalid open combination (need 1 anchor offer)");
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/* Now create our commitment tx. */
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proto_to_sha256(o1->revocation_hash, &rhash);
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commit = create_commit_tx(ctx, o1, o2, a, &rhash, cstate);
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/* Check signature. */
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subscript = bitcoin_redeem_2of2(ctx, &pubkey1, &pubkey2);
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if (!check_tx_sig(commit, 0, subscript, tal_count(subscript),
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&pubkey2, &sig))
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errx(1, "Their signature invalid");
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tal_free(ctx);
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return 0;
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}
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