301 lines
12 KiB
C
301 lines
12 KiB
C
/* We can't seem to route the following:
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*
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* Expect route 03c173897878996287a8100469f954dd820fcd8941daed91c327f168f3329be0bf -> 0230ad0e74ea03976b28fda587bb75bdd357a1938af4424156a18265167f5e40ae -> 02ea622d5c8d6143f15ed3ce1d501dd0d3d09d3b1c83a44d0034949f8a9ab60f06
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*
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* getchannels:
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* {'channels': [{'active': True, 'short_id': '6990x2x1/1', 'fee_per_kw': 10, 'delay': 5, 'message_flags': 0, 'channel_flags': 1, 'destination': '0230ad0e74ea03976b28fda587bb75bdd357a1938af4424156a18265167f5e40ae', 'source': '02ea622d5c8d6143f15ed3ce1d501dd0d3d09d3b1c83a44d0034949f8a9ab60f06', 'last_update': 1504064344}, {'active': True, 'short_id': '6989x2x1/0', 'fee_per_kw': 10, 'delay': 5, 'message_flags': 0, 'channel_flags': 0, 'destination': '03c173897878996287a8100469f954dd820fcd8941daed91c327f168f3329be0bf', 'source': '0230ad0e74ea03976b28fda587bb75bdd357a1938af4424156a18265167f5e40ae', 'last_update': 1504064344}, {'active': True, 'short_id': '6990x2x1/0', 'fee_per_kw': 10, 'delay': 5, 'message_flags': 0, 'channel_flags': 0, 'destination': '02ea622d5c8d6143f15ed3ce1d501dd0d3d09d3b1c83a44d0034949f8a9ab60f06', 'source': '0230ad0e74ea03976b28fda587bb75bdd357a1938af4424156a18265167f5e40ae', 'last_update': 1504064344}, {'active': True, 'short_id': '6989x2x1/1', 'fee_per_kw': 10, 'delay': 5, 'message_flags': 0, 'channel_flags': 1, 'destination': '0230ad0e74ea03976b28fda587bb75bdd357a1938af4424156a18265167f5e40ae', 'source': '03c173897878996287a8100469f954dd820fcd8941daed91c327f168f3329be0bf', 'last_update': 1504064344}]}
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*/
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#include "config.h"
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#include <assert.h>
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#include <common/channel_type.h>
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#include <common/dijkstra.h>
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#include <common/gossmap.h>
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#include <common/gossip_store.h>
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#include <common/route.h>
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#include <common/setup.h>
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#include <common/type_to_string.h>
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#include <common/utils.h>
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#include <bitcoin/chainparams.h>
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#include <stdio.h>
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#include <wire/peer_wiregen.h>
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#include <unistd.h>
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/* AUTOGENERATED MOCKS START */
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/* Generated stub for fromwire_bigsize */
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bigsize_t fromwire_bigsize(const u8 **cursor UNNEEDED, size_t *max UNNEEDED)
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{ fprintf(stderr, "fromwire_bigsize called!\n"); abort(); }
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/* Generated stub for fromwire_channel_id */
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bool fromwire_channel_id(const u8 **cursor UNNEEDED, size_t *max UNNEEDED,
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struct channel_id *channel_id UNNEEDED)
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{ fprintf(stderr, "fromwire_channel_id called!\n"); abort(); }
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/* Generated stub for fromwire_tlv */
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bool fromwire_tlv(const u8 **cursor UNNEEDED, size_t *max UNNEEDED,
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const struct tlv_record_type *types UNNEEDED, size_t num_types UNNEEDED,
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void *record UNNEEDED, struct tlv_field **fields UNNEEDED,
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const u64 *extra_types UNNEEDED, size_t *err_off UNNEEDED, u64 *err_type UNNEEDED)
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{ fprintf(stderr, "fromwire_tlv called!\n"); abort(); }
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/* Generated stub for towire_bigsize */
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void towire_bigsize(u8 **pptr UNNEEDED, const bigsize_t val UNNEEDED)
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{ fprintf(stderr, "towire_bigsize called!\n"); abort(); }
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/* Generated stub for towire_channel_id */
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void towire_channel_id(u8 **pptr UNNEEDED, const struct channel_id *channel_id UNNEEDED)
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{ fprintf(stderr, "towire_channel_id called!\n"); abort(); }
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/* Generated stub for towire_tlv */
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void towire_tlv(u8 **pptr UNNEEDED,
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const struct tlv_record_type *types UNNEEDED, size_t num_types UNNEEDED,
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const void *record UNNEEDED)
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{ fprintf(stderr, "towire_tlv called!\n"); abort(); }
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/* AUTOGENERATED MOCKS END */
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static void write_to_store(int store_fd, const u8 *msg)
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{
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struct gossip_hdr hdr;
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hdr.flags = cpu_to_be16(0);
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hdr.len = cpu_to_be16(tal_count(msg));
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/* We don't actually check these! */
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hdr.crc = 0;
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hdr.timestamp = 0;
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assert(write(store_fd, &hdr, sizeof(hdr)) == sizeof(hdr));
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assert(write(store_fd, msg, tal_count(msg)) == tal_count(msg));
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}
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static void update_connection(int store_fd,
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const struct node_id *from,
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const struct node_id *to,
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const char *shortid,
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struct amount_msat min,
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struct amount_msat max,
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u32 base_fee, s32 proportional_fee,
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u32 delay,
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bool disable)
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{
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struct short_channel_id scid;
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secp256k1_ecdsa_signature dummy_sig;
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u8 *msg;
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/* So valgrind doesn't complain */
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memset(&dummy_sig, 0, sizeof(dummy_sig));
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if (!short_channel_id_from_str(shortid, strlen(shortid), &scid))
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abort();
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msg = towire_channel_update(tmpctx,
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&dummy_sig,
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&chainparams->genesis_blockhash,
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&scid, 0,
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ROUTING_OPT_HTLC_MAX_MSAT,
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node_id_idx(from, to)
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+ (disable ? ROUTING_FLAGS_DISABLED : 0),
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delay,
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min,
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base_fee,
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proportional_fee,
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max);
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write_to_store(store_fd, msg);
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}
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static void add_connection(int store_fd,
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const struct node_id *from,
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const struct node_id *to,
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const char *shortid,
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struct amount_msat min,
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struct amount_msat max,
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u32 base_fee, s32 proportional_fee,
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u32 delay)
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{
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struct short_channel_id scid;
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secp256k1_ecdsa_signature dummy_sig;
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struct secret not_a_secret;
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struct pubkey dummy_key;
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u8 *msg;
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const struct node_id *ids[2];
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/* So valgrind doesn't complain */
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memset(&dummy_sig, 0, sizeof(dummy_sig));
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memset(¬_a_secret, 1, sizeof(not_a_secret));
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pubkey_from_secret(¬_a_secret, &dummy_key);
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if (!short_channel_id_from_str(shortid, strlen(shortid), &scid))
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abort();
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if (node_id_cmp(from, to) > 0) {
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ids[0] = to;
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ids[1] = from;
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} else {
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ids[0] = from;
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ids[1] = to;
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}
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msg = towire_channel_announcement(tmpctx, &dummy_sig, &dummy_sig,
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&dummy_sig, &dummy_sig,
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/* features */ NULL,
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&chainparams->genesis_blockhash,
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&scid,
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ids[0], ids[1],
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&dummy_key, &dummy_key);
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write_to_store(store_fd, msg);
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update_connection(store_fd, from, to, shortid, min, max,
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base_fee, proportional_fee,
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delay, false);
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}
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static bool channel_is_between(const struct gossmap *gossmap,
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const struct route_hop *route,
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const struct gossmap_node *a,
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const struct gossmap_node *b)
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{
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const struct gossmap_chan *c = gossmap_find_chan(gossmap, &route->scid);
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if (c->half[route->direction].nodeidx
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!= gossmap_node_idx(gossmap, a))
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return false;
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if (c->half[!route->direction].nodeidx
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!= gossmap_node_idx(gossmap, b))
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return false;
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return true;
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}
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/* route_can_carry disregards unless *both* dirs are enabled, so we use
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* a simpler variant here */
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static bool route_can_carry_unless_disabled(const struct gossmap *map,
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const struct gossmap_chan *c,
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int dir,
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struct amount_msat amount,
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void *arg)
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{
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if (!c->half[dir].enabled)
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return false;
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return route_can_carry_even_disabled(map, c, dir, amount, arg);
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}
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int main(int argc, char *argv[])
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{
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struct node_id a, b, c, d;
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struct gossmap_node *a_node, *b_node, *c_node, *d_node;
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const struct dijkstra *dij;
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struct route_hop *route;
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int store_fd;
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struct gossmap *gossmap;
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const double riskfactor = 1.0;
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char gossip_version = 10;
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char *gossipfilename;
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common_setup(argv[0]);
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node_id_from_hexstr("03c173897878996287a8100469f954dd820fcd8941daed91c327f168f3329be0bf",
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strlen("03c173897878996287a8100469f954dd820fcd8941daed91c327f168f3329be0bf"),
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&a);
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node_id_from_hexstr("0230ad0e74ea03976b28fda587bb75bdd357a1938af4424156a18265167f5e40ae",
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strlen("0230ad0e74ea03976b28fda587bb75bdd357a1938af4424156a18265167f5e40ae"),
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&b);
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node_id_from_hexstr("02ea622d5c8d6143f15ed3ce1d501dd0d3d09d3b1c83a44d0034949f8a9ab60f06",
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strlen("02ea622d5c8d6143f15ed3ce1d501dd0d3d09d3b1c83a44d0034949f8a9ab60f06"),
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&c);
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node_id_from_hexstr("02cca6c5c966fcf61d121e3a70e03a1cd9eeeea024b26ea666ce974d43b242e636",
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strlen("02cca6c5c966fcf61d121e3a70e03a1cd9eeeea024b26ea666ce974d43b242e636"),
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&d);
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chainparams = chainparams_for_network("regtest");
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store_fd = tmpdir_mkstemp(tmpctx, "run-route-specific-gossipstore.XXXXXX", &gossipfilename);
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assert(write(store_fd, &gossip_version, sizeof(gossip_version))
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== sizeof(gossip_version));
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gossmap = gossmap_load(tmpctx, gossipfilename, NULL);
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/* [{'active': True, 'short_id': '6990:2:1/1', 'fee_per_kw': 10, 'delay': 5, 'message_flags': 0, 'channel_flags': 1, 'destination': '0230ad0e74ea03976b28fda587bb75bdd357a1938af4424156a18265167f5e40ae', 'source': '02ea622d5c8d6143f15ed3ce1d501dd0d3d09d3b1c83a44d0034949f8a9ab60f06', 'last_update': 1504064344}, */
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add_connection(store_fd, &c, &b, "6990x2x1",
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AMOUNT_MSAT(0), AMOUNT_MSAT(1000),
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0, 10, 5);
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/* {'active': True, 'short_id': '6989:2:1/0', 'fee_per_kw': 10, 'delay': 5, 'message_flags': 0, 'channel_flags': 0, 'destination': '03c173897878996287a8100469f954dd820fcd8941daed91c327f168f3329be0bf', 'source': '0230ad0e74ea03976b28fda587bb75bdd357a1938af4424156a18265167f5e40ae', 'last_update': 1504064344}, */
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add_connection(store_fd, &b, &a, "6989x2x1",
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AMOUNT_MSAT(0), AMOUNT_MSAT(1000),
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0, 10, 5);
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/* {'active': True, 'short_id': '6990:2:1/0', 'fee_per_kw': 10, 'delay': 5, 'message_flags': 0, 'channel_flags': 0, 'destination': '02ea622d5c8d6143f15ed3ce1d501dd0d3d09d3b1c83a44d0034949f8a9ab60f06', 'source': '0230ad0e74ea03976b28fda587bb75bdd357a1938af4424156a18265167f5e40ae', 'last_update': 1504064344}, */
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update_connection(store_fd, &b, &c, "6990x2x1",
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AMOUNT_MSAT(100), AMOUNT_MSAT(1000),
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0, 10, 5, false);
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/* {'active': True, 'short_id': '6989:2:1/1', 'fee_per_kw': 10, 'delay': 5, 'message_flags': 0, 'channel_flags': 1, 'destination': '0230ad0e74ea03976b28fda587bb75bdd357a1938af4424156a18265167f5e40ae', 'source': '03c173897878996287a8100469f954dd820fcd8941daed91c327f168f3329be0bf', 'last_update': 1504064344}]} */
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update_connection(store_fd, &a, &b, "6989x2x1",
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AMOUNT_MSAT(0), AMOUNT_MSAT(1000),
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0, 10, 5, false);
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assert(gossmap_refresh(gossmap, NULL));
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a_node = gossmap_find_node(gossmap, &a);
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b_node = gossmap_find_node(gossmap, &b);
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c_node = gossmap_find_node(gossmap, &c);
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dij = dijkstra(tmpctx, gossmap, c_node, AMOUNT_MSAT(1000), riskfactor,
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route_can_carry_unless_disabled,
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route_score_cheaper, NULL);
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route = route_from_dijkstra(tmpctx, gossmap, dij, a_node,
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AMOUNT_MSAT(1000), 0);
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assert(route);
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assert(tal_count(route) == 2);
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assert(channel_is_between(gossmap, &route[0], a_node, b_node));
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assert(channel_is_between(gossmap, &route[1], b_node, c_node));
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/* We should not be able to find a route that exceeds our own capacity */
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dij = dijkstra(tmpctx, gossmap, c_node, AMOUNT_MSAT(1000001), riskfactor,
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route_can_carry_unless_disabled,
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route_score_cheaper, NULL);
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route = route_from_dijkstra(tmpctx, gossmap, dij, a_node,
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AMOUNT_MSAT(1000), 0);
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assert(!route);
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/* Now test with a query that exceeds the channel capacity after adding
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* some fees */
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dij = dijkstra(tmpctx, gossmap, c_node, AMOUNT_MSAT(999999), riskfactor,
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route_can_carry_unless_disabled,
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route_score_cheaper, NULL);
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route = route_from_dijkstra(tmpctx, gossmap, dij, a_node,
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AMOUNT_MSAT(999999), 0);
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assert(!route);
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/* This should fail to return a route because it is smaller than these
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* htlc_minimum_msat on the last channel. */
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dij = dijkstra(tmpctx, gossmap, c_node, AMOUNT_MSAT(1), riskfactor,
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route_can_carry_unless_disabled,
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route_score_cheaper, NULL);
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route = route_from_dijkstra(tmpctx, gossmap, dij, a_node,
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AMOUNT_MSAT(1), 0);
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assert(!route);
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/* {'active': True, 'short_id': '6990:2:1/0', 'fee_per_kw': 10, 'delay': 5, 'message_flags': 1, 'htlc_maximum_msat': 500000, 'htlc_minimum_msat': 100, 'channel_flags': 0, 'destination': '02cca6c5c966fcf61d121e3a70e03a1cd9eeeea024b26ea666ce974d43b242e636', 'source': '03c173897878996287a8100469f954dd820fcd8941daed91c327f168f3329be0bf', 'last_update': 1504064344}, */
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add_connection(store_fd, &a, &d, "6991x2x1",
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AMOUNT_MSAT(100), AMOUNT_MSAT(499968), /* exact repr in fp16! */
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0, 0, 5);
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assert(gossmap_refresh(gossmap, NULL));
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a_node = gossmap_find_node(gossmap, &a);
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b_node = gossmap_find_node(gossmap, &b);
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c_node = gossmap_find_node(gossmap, &c);
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d_node = gossmap_find_node(gossmap, &d);
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/* This should route correctly at the max_msat level */
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dij = dijkstra(tmpctx, gossmap, d_node, AMOUNT_MSAT(499968), riskfactor,
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route_can_carry_unless_disabled,
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route_score_cheaper, NULL);
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route = route_from_dijkstra(tmpctx, gossmap, dij, a_node,
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AMOUNT_MSAT(499968), 0);
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assert(route);
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/* This should fail to return a route because it's larger than the
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* htlc_maximum_msat on the last channel. */
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dij = dijkstra(tmpctx, gossmap, d_node, AMOUNT_MSAT(499968+1), riskfactor,
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route_can_carry_unless_disabled,
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route_score_cheaper, NULL);
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route = route_from_dijkstra(tmpctx, gossmap, dij, a_node,
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AMOUNT_MSAT(499968+1), 0);
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assert(!route);
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common_shutdown();
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return 0;
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}
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