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routing: Return boolean from handle_channel_announcement

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This will later be used to determine whether or not we should announce
ourselves as a node.

Signed-off-by: Christian Decker <decker.christian@gmail.com>
This commit is contained in:
Christian Decker
2017-11-24 15:47:14 +01:00
committed by Rusty Russell
parent b5f737e563
commit ba45ccffd8
3 changed files with 94 additions and 16 deletions
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28
gossipd/routing.c
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@@ -463,12 +463,12 @@ static bool check_channel_announcement(
check_signed_hash(&hash, bitcoin2_sig, bitcoin2_key);
}
void handle_channel_announcement(
bool handle_channel_announcement(
struct routing_state *rstate,
const u8 *announce, size_t len)
{
u8 *serialized;
bool forward = false;
bool forward = false, local, sigfail;
secp256k1_ecdsa_signature node_signature_1;
secp256k1_ecdsa_signature node_signature_2;
struct short_channel_id short_channel_id;
@@ -493,7 +493,7 @@ void handle_channel_announcement(
&node_id_1, &node_id_2,
&bitcoin_key_1, &bitcoin_key_2)) {
tal_free(tmpctx);
return;
return false;
}
/* BOLT #7:
@@ -507,7 +507,7 @@ void handle_channel_announcement(
type_to_string(tmpctx, struct sha256_double,
&chain_hash));
tal_free(tmpctx);
return;
return false;
}
// FIXME: Check features!
@@ -517,24 +517,31 @@ void handle_channel_announcement(
type_to_string(trc, struct short_channel_id,
&short_channel_id));
if (!check_channel_announcement(&node_id_1, &node_id_2, &bitcoin_key_1,
&bitcoin_key_2, &node_signature_1,
&node_signature_2, &bitcoin_signature_1,
&bitcoin_signature_2, serialized)) {
local = pubkey_eq(&node_id_1, &rstate->local_id) ||
pubkey_eq(&node_id_2, &rstate->local_id);
sigfail = !check_channel_announcement(
&node_id_1, &node_id_2, &bitcoin_key_1, &bitcoin_key_2,
&node_signature_1, &node_signature_2, &bitcoin_signature_1,
&bitcoin_signature_2, serialized);
if (sigfail && !local) {
status_trace(
"Signature verification of channel announcement failed");
tal_free(tmpctx);
return;
return false;
}
forward |= add_channel_direction(rstate, &node_id_1, &node_id_2,
&short_channel_id, serialized);
forward |= add_channel_direction(rstate, &node_id_2, &node_id_1,
&short_channel_id, serialized);
if (!forward) {
status_trace("Not forwarding channel_announcement");
tal_free(tmpctx);
return;
/* This will not be forwarded so we do not want to
* announce the node either, others might drop it. */
return false;
}
u8 *tag = tal_arr(tmpctx, u8, 0);
@@ -543,6 +550,7 @@ void handle_channel_announcement(
tag, serialized);
tal_free(tmpctx);
return local;
}
void handle_channel_update(struct routing_state *rstate, const u8 *update, size_t len)