mirror of
https://github.com/ElementsProject/lightning.git
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77 lines
2.1 KiB
C
77 lines
2.1 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/read_write_all/read_write_all.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 "find_p2sh_out.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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struct sha256 seed, revocation_hash, rval, rhash;
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struct pkt *pkt;
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uint64_t htlc_val;
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u32 locktime_seconds;
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unsigned update_num;
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char *endp;
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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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"<seed> <update-number> <satoshi> <r-value> <abs-locktime-seconds>\n"
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"Create a new HTLC update message",
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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 != 6)
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opt_usage_exit_fail("Expected 5 arguments");
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if (!hex_decode(argv[1], strlen(argv[1]), &seed, sizeof(seed)))
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errx(1, "Invalid seed '%s' - need 256 hex bits", argv[1]);
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update_num = atoi(argv[2]);
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if (!update_num)
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errx(1, "Update number %s invalid", argv[2]);
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htlc_val = strtol(argv[3], &endp, 10);
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if (*endp || !htlc_val)
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errx(1, "Expected number for %s", argv[3]);
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if (!hex_decode(argv[4], strlen(argv[4]), &rval, sizeof(rval)))
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errx(1, "Invalid rvalue '%s' - need 256 hex bits", argv[4]);
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locktime_seconds = strtol(argv[5], &endp, 10);
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if (*endp || !locktime_seconds)
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errx(1, "Expected locktime for %s", argv[5]);
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/* Get next revocation hash. */
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shachain_from_seed(&seed, update_num, &revocation_hash);
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sha256(&revocation_hash,
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revocation_hash.u.u8, sizeof(revocation_hash.u.u8));
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/* Get htlc rvalue hash. */
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sha256(&rhash, &rval, sizeof(rval));
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pkt = update_htlc_add_pkt(ctx, &revocation_hash, htlc_val,
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&rhash, locktime_seconds);
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if (!write_all(STDOUT_FILENO, pkt, pkt_totlen(pkt)))
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err(1, "Writing out packet");
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tal_free(ctx);
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return 0;
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}
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