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topology: don't call gossmap for locall added channels.

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This happens in deprecated mode, and we get bogus results.  Valgrind caught it!

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell 2024-01-31 10:47:39 +10:30
parent 82819433bc
commit 8454e4910a
3 changed files with 24 additions and 9 deletions
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2
common/gossmap.c
View file

@ -1249,6 +1249,8 @@ void gossmap_chan_get_update_details(const struct gossmap *map,
const size_t htlc_maximum_off = fee_prop_off + 4;
assert(gossmap_chan_set(chan, dir));
/* Not allowed on local updates! */
assert(chan->cann_off < map->map_size);
if (timestamp)
*timestamp = map_be32(map, timestamp_off);

2
common/gossmap.h
View file

@ -155,7 +155,7 @@ u8 *gossmap_node_get_features(const tal_t *ctx,
const struct gossmap_node *n);
/* Returns details from channel_update (must be gossmap_chan_set, and
* does not work for local_updatechan! */
* does not work for local_updatechan)! */
void gossmap_chan_get_update_details(const struct gossmap *map,
const struct gossmap_chan *chan,
int dir,

29
plugins/topology.c
View file

@ -266,14 +266,27 @@ static void json_add_halfchan(struct json_stream *response,
json_add_num(response, "direction", dir);
json_add_bool(response, "public", !c->private);
gossmap_chan_get_update_details(gossmap, c, dir,
&timestamp,
&message_flags,
&channel_flags,
&fee_base_msat,
&fee_proportional_millionths,
&htlc_minimum_msat,
&htlc_maximum_msat);
if (c->private) {
/* Local additions don't have a channel_update
* in gossmap. This is deprecated anyway, but
* fill in values from entry we added. */
timestamp = time_now().ts.tv_sec;
message_flags = (ROUTING_OPT_HTLC_MAX_MSAT|ROUTING_OPT_DONT_FORWARD);
channel_flags = node_id_idx(&node_id[dir], &node_id[!dir]);
fee_base_msat = c->half[dir].base_fee;
fee_proportional_millionths = c->half[dir].proportional_fee;
htlc_minimum_msat = amount_msat(fp16_to_u64(c->half[dir].htlc_min));
htlc_maximum_msat = amount_msat(fp16_to_u64(c->half[dir].htlc_max));
} else {
gossmap_chan_get_update_details(gossmap, c, dir,
&timestamp,
&message_flags,
&channel_flags,
&fee_base_msat,
&fee_proportional_millionths,
&htlc_minimum_msat,
&htlc_maximum_msat);
}
json_add_amount_sat_msat(response, "amount_msat", capacity);
json_add_num(response, "message_flags", message_flags);