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328 lines
12 KiB
328 lines
12 KiB
/* For example, in the spec tests we use the following channels:
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*
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* lightning/devtools/mkgossip 103x1x0 06226e46111a0b59caaf126043eb5bbf28c34f3a5e332a1fc7b2b73cf188910f 0000000000000000000000000000000000000000000000000000000000000002 0000000000000000000000000000000000000000000000000000000000000003 0000000000000000000000000000000000000000000000000000000000000010 0000000000000000000000000000000000000000000000000000000000000020 "" 1565587763 144 0 1000 10 "" "01080808082607" 1565587763 48 0 100 11 100000 "0151b6887026070220014c4e1cc141001e6f65fffec8a825260703c43068ceb641d7b25c3a26070441cf248da2034dfa9351a9e946d71ce86f561f50b67753fd8e385d44647bf62cdb91032607"
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*
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* lightning/devtools/mkgossip 109x1x0 06226e46111a0b59caaf126043eb5bbf28c34f3a5e332a1fc7b2b73cf188910f 0000000000000000000000000000000000000000000000000000000000000004 0000000000000000000000000000000000000000000000000000000000000005 0000000000000000000000000000000000000000000000000000000000000030 0000000000000000000000000000000000000000000000000000000000000040 "" 1565587764 144 0 1000 10 "" "" 1565587765 48 0 100 11 100000 022a03b0c0000300d000000000240020012607
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*
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* lightning/devtools/mkgossip 115x1x0 06226e46111a0b59caaf126043eb5bbf28c34f3a5e332a1fc7b2b73cf188910f 0000000000000000000000000000000000000000000000000000000000000003 0000000000000000000000000000000000000000000000000000000000000004 0000000000000000000000000000000000000000000000000000000000000050 0000000000000000000000000000000000000000000000000000000000000060 "" 1565597764 144 0 1000 10 "" "0441cf248da2034dfa9351a9e946d71ce86f561f50b67753fd8e385d44647bf62cdb91032607" 1565597765 48 0 100 11 100000 ""
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*/
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#include "config.h"
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#include <assert.h>
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#include <bitcoin/address.h>
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#include <bitcoin/script.h>
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#include <bitcoin/short_channel_id.h>
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#include <bitcoin/tx.h>
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#include <ccan/crc32c/crc32c.h>
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#include <ccan/err/err.h>
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#include <ccan/str/hex/hex.h>
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#include <common/gossip_constants.h>
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#include <common/utils.h>
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#include <inttypes.h>
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#include <wire/gen_peer_wire.h>
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#include <stdio.h>
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struct update_opts {
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u32 timestamp;
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u32 cltv_expiry_delta;
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struct amount_msat min;
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struct amount_msat feebase;
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u32 fee_proportional_millionths;
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struct amount_msat *max;
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u8 *addresses;
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};
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static int parse_options(char *argv[], struct update_opts *opts,
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const char *desc)
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{
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int argnum = 0;
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opts->timestamp = atol(argv[argnum++]);
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if (!opts->timestamp)
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errx(1, "Bad %s.timestamp", desc);
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opts->cltv_expiry_delta = atol(argv[argnum++]);
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if (!opts->cltv_expiry_delta)
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errx(1, "Bad %s.cltv_expiry_delta", desc);
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if (!parse_amount_msat(&opts->min, argv[argnum], strlen(argv[argnum])))
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errx(1, "Bad %s.min", desc);
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argnum++;
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if (!parse_amount_msat(&opts->feebase,
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argv[argnum], strlen(argv[argnum])))
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errx(1, "Bad %s.feebase", desc);
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argnum++;
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opts->fee_proportional_millionths = atol(argv[argnum++]);
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if (!opts->fee_proportional_millionths)
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errx(1, "Bad %s.fee_proportional_millionths", desc);
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if (streq(argv[argnum], ""))
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opts->max = NULL;
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else {
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opts->max = tal(NULL, struct amount_msat);
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if (!parse_amount_msat(opts->max,
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argv[argnum], strlen(argv[argnum])))
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errx(1, "Bad %s.max", desc);
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}
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argnum++;
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opts->addresses = tal_hexdata(NULL, argv[argnum], strlen(argv[argnum]));
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if (!opts->addresses)
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errx(1, "Bad %s.addresses", desc);
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argnum++;
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return argnum;
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}
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static char *sig_as_hex(const secp256k1_ecdsa_signature *sig)
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{
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u8 compact_sig[64];
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secp256k1_ecdsa_signature_serialize_compact(secp256k1_ctx,
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compact_sig,
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sig);
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return tal_hexstr(NULL, compact_sig, sizeof(compact_sig));
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}
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/* BOLT #7:
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*
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* The checksum of a `channel_update` is the CRC32C checksum as specified in
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* [RFC3720](https://tools.ietf.org/html/rfc3720#appendix-B.4) of this
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* `channel_update` without its `signature` and `timestamp` fields.
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*/
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static u32 crc32_of_update(const u8 *channel_update)
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{
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u32 sum;
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/* BOLT #7:
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*
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* 1. type: 258 (`channel_update`)
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* 2. data:
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* * [`signature`:`signature`]
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* * [`chain_hash`:`chain_hash`]
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* * [`short_channel_id`:`short_channel_id`]
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* * [`u32`:`timestamp`]
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*...
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*/
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/* We already checked it's valid before accepting */
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assert(tal_count(channel_update) > 2 + 64 + 32 + 8 + 4);
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sum = crc32c(0, channel_update + 2 + 64, 32 + 8);
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sum = crc32c(sum, channel_update + 2 + 64 + 32 + 8 + 4,
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tal_count(channel_update) - (64 + 2 + 32 + 8 + 4));
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return sum;
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}
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static void print_update(const struct bitcoin_blkid *chainhash,
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const struct short_channel_id *scid,
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const struct update_opts *opts,
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bool is_lesser_key,
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const struct privkey *privkey)
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{
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/* 2 bytes msg type + 64 bytes of signature */
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const size_t channel_update_offset = 2 + 64;
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struct sha256_double hash;
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secp256k1_ecdsa_signature sig;
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u8 *cupdate;
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memset(&sig, 0, sizeof(sig));
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if (opts->max) {
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cupdate = towire_channel_update_option_channel_htlc_max
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(NULL, &sig, chainhash, scid, opts->timestamp,
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ROUTING_OPT_HTLC_MAX_MSAT,
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is_lesser_key ? 0 : ROUTING_FLAGS_DIRECTION,
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opts->cltv_expiry_delta,
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opts->min,
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opts->feebase.millisatoshis, /* Raw: devtools code */
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opts->fee_proportional_millionths,
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*opts->max);
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} else {
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cupdate = towire_channel_update
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(NULL, &sig, chainhash, scid, opts->timestamp,
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0,
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is_lesser_key ? 0 : ROUTING_FLAGS_DIRECTION,
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opts->cltv_expiry_delta,
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opts->min,
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opts->feebase.millisatoshis, /* Raw: devtools code */
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opts->fee_proportional_millionths);
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}
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sha256_double(&hash, cupdate + channel_update_offset,
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tal_count(cupdate) - channel_update_offset);
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sign_hash(privkey, &hash, &sig);
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printf("type=channel_update\n");
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printf(" signature=%s\n", sig_as_hex(&sig));
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printf(" chain_hash=%s\n", tal_hexstr(NULL, chainhash, sizeof(*chainhash)));
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printf(" short_channel_id=%s\n", short_channel_id_to_str(NULL, scid));
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printf(" timestamp=%u\n", opts->timestamp);
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printf(" message_flags=%u\n",
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opts->max ? ROUTING_OPT_HTLC_MAX_MSAT : 0);
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printf(" channel_flags=%u\n",
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is_lesser_key ? 0 : ROUTING_FLAGS_DIRECTION);
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printf(" cltv_expiry_delta=%u\n",
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opts->cltv_expiry_delta);
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printf(" htlc_minimum_msat=%"PRIu64"\n",
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opts->min.millisatoshis); /* Raw: devtools code */
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printf(" fee_base_msat=%"PRIu64"\n",
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opts->feebase.millisatoshis); /* Raw: devtools code */
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printf(" fee_proportional_millionths=%u\n",
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opts->fee_proportional_millionths);
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if (opts->max)
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printf(" htlc_maximum_msat=%"PRIu64"\n",
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opts->max->millisatoshis); /* Raw: devtools code */
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printf("# crc32c checksum: %08x\n", crc32_of_update(cupdate));
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}
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static void print_nannounce(const struct node_id *nodeid,
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const struct update_opts *opts,
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const struct privkey *privkey)
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{
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/* 2 bytes msg type + 64 bytes of signature */
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const size_t node_announcement_offset = 2 + 64;
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struct sha256_double hash;
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secp256k1_ecdsa_signature sig;
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char alias[33];
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u8 *nannounce;
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memset(&sig, 0, sizeof(sig));
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assert(hex_str_size(sizeof(*nodeid)) >= sizeof(alias));
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hex_encode(nodeid, hex_data_size(sizeof(alias)), alias, sizeof(alias));
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nannounce = towire_node_announcement(NULL, &sig, NULL, opts->timestamp,
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nodeid, nodeid->k, (u8 *)alias,
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opts->addresses);
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sha256_double(&hash, nannounce + node_announcement_offset,
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tal_count(nannounce) - node_announcement_offset);
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sign_hash(privkey, &hash, &sig);
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printf("type=node_announcement\n");
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printf(" signature=%s\n", sig_as_hex(&sig));
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printf(" features=%s\n", tal_hex(NULL, NULL));
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printf(" timestamp=%u\n", opts->timestamp);
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printf(" node_id=%s\n", node_id_to_hexstr(NULL, nodeid));
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printf(" rgb_color=%s\n", tal_hexstr(NULL, nodeid->k, 3));
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printf(" alias=%s\n", tal_hexstr(NULL, alias, 32));
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printf(" addresses=%s\n", tal_hex(NULL, opts->addresses));
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}
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int main(int argc, char *argv[])
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{
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struct privkey node_privkey[2], funding_privkey[2];
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struct pubkey node[2], bitcoin[2];
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struct node_id nodeid[2];
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int lesser_key;
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struct short_channel_id scid;
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struct bitcoin_blkid chainhash;
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secp256k1_ecdsa_signature nodesig[2], bitcoinsig[2];
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const u8 *features;
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u8 *cannounce;
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/* 2 bytes msg type + 256 bytes of signatures */
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const size_t channel_announcement_offset = 2 + 256;
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int argnum;
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struct sha256_double hash;
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struct update_opts opts[2];
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setup_locale();
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secp256k1_ctx = secp256k1_context_create(SECP256K1_CONTEXT_VERIFY |
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SECP256K1_CONTEXT_SIGN);
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if (argc != 8 + 7 * 2)
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errx(1, "Usage: mkgossip <scid> <chainhash> <node-privkey1> <node-privkey2> <node1-funding-privkey> <node2-funding-privkey> <features-hex> update-opts-1 update-opts-2\n"
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"Where <update-opts> is:\n"
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" <timestamp>\n"
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" <cltv_expiry_delta>\n"
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" <htlc_minimum_msat>\n"
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" <fee_base_msat>\n"
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" <fee_proportional_millionths>\n"
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" <htlc_maximum_msat-or-empty>\n"
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" <hex-addrstr>");
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argnum = 1;
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if (!short_channel_id_from_str(argv[argnum], strlen(argv[argnum]), &scid))
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errx(1, "Bad scid");
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argnum++;
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/* Don't do endian-reversing insanity here! */
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if (!hex_decode(argv[argnum], strlen(argv[argnum]),
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&chainhash, sizeof(chainhash)))
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errx(1, "Parsing chainhash");
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argnum++;
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if (!hex_decode(argv[argnum], strlen(argv[argnum]),
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&node_privkey[0], sizeof(node_privkey[0])))
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errx(1, "Parsing node-privkey1");
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argnum++;
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if (!hex_decode(argv[argnum], strlen(argv[argnum]),
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&node_privkey[1], sizeof(node_privkey[2])))
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errx(1, "Parsing node-privkey2");
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argnum++;
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if (!hex_decode(argv[argnum], strlen(argv[argnum]),
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&funding_privkey[0], sizeof(funding_privkey[0])))
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errx(1, "Parsing funding-privkey1");
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argnum++;
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if (!hex_decode(argv[argnum], strlen(argv[argnum]),
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&funding_privkey[1], sizeof(funding_privkey[2])))
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errx(1, "Parsing funding-privkey2");
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argnum++;
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features = tal_hexdata(NULL, argv[argnum], strlen(argv[argnum]));
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if (!features)
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errx(1, "Parsing hexfeatures");
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argnum++;
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argnum += parse_options(argv + argnum, &opts[0], "update-opts1");
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argnum += parse_options(argv + argnum, &opts[1], "update-opts2");
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if (!pubkey_from_privkey(&node_privkey[0], &node[0])
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|| !pubkey_from_privkey(&node_privkey[1], &node[1])
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|| !pubkey_from_privkey(&funding_privkey[0], &bitcoin[0])
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|| !pubkey_from_privkey(&funding_privkey[1], &bitcoin[1]))
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errx(1, "Bad privkeys");
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lesser_key = pubkey_idx(&node[0], &node[1]);
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node_id_from_pubkey(&nodeid[0], &node[0]);
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node_id_from_pubkey(&nodeid[1], &node[1]);
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/* First make msg with dummy sigs. */
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memset(nodesig, 0, sizeof(nodesig));
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memset(bitcoinsig, 0, sizeof(bitcoinsig));
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cannounce = towire_channel_announcement(NULL,
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&nodesig[lesser_key],
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&nodesig[!lesser_key],
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&bitcoinsig[lesser_key],
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&bitcoinsig[!lesser_key],
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features, &chainhash,
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&scid,
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&nodeid[lesser_key],
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&nodeid[!lesser_key],
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&bitcoin[lesser_key],
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&bitcoin[!lesser_key]);
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sha256_double(&hash, cannounce + channel_announcement_offset,
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tal_count(cannounce) - channel_announcement_offset);
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sign_hash(&node_privkey[0], &hash, &nodesig[0]);
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sign_hash(&funding_privkey[0], &hash, &bitcoinsig[0]);
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sign_hash(&node_privkey[1], &hash, &nodesig[1]);
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sign_hash(&funding_privkey[1], &hash, &bitcoinsig[1]);
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printf("type=channel_announcement\n");
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printf(" node_signature_1=%s\n", sig_as_hex(&nodesig[lesser_key]));
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printf(" node_signature_2=%s\n", sig_as_hex(&nodesig[!lesser_key]));
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printf(" bitcoin_signature_1=%s\n", sig_as_hex(&bitcoinsig[lesser_key]));
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printf(" bitcoin_signature_2=%s\n", sig_as_hex(&bitcoinsig[!lesser_key]));
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printf(" features=%s\n", tal_hex(NULL, features));
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printf(" chain_hash=%s\n", tal_hexstr(NULL, &chainhash, sizeof(chainhash)));
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printf(" short_channel_id=%s\n", short_channel_id_to_str(NULL, &scid));
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printf(" node_id_1=%s\n",
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node_id_to_hexstr(NULL, &nodeid[lesser_key]));
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printf(" node_id_2=%s\n",
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node_id_to_hexstr(NULL, &nodeid[!lesser_key]));
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printf(" bitcoin_key_1=%s\n",
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pubkey_to_hexstr(NULL, &bitcoin[lesser_key]));
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printf(" bitcoin_key_2=%s\n",
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pubkey_to_hexstr(NULL, &bitcoin[!lesser_key]));
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printf("\n#Node 1:\n");
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print_update(&chainhash, &scid, &opts[0], lesser_key == 0,
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&node_privkey[0]);
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print_nannounce(&nodeid[0], &opts[0], &node_privkey[0]);
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printf("\n#Node 2:\n");
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print_update(&chainhash, &scid, &opts[1], lesser_key == 1,
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&node_privkey[1]);
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print_nannounce(&nodeid[1], &opts[1], &node_privkey[1]);
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return 0;
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}
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