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lightningd: Restore forwarding of legacy onions.

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Partial revert of 43a833e405
"lightningd: remove support for legacy onion format."; we restore the
ability to decode legacy onions for forwarding, but not to generate them.
(We don't accept them properly since making payment_secret compulsory
anyway, so no real change there!)

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Changelog-Removed: Protocol: ... but we still forward legacy HTLC onions for now.
This commit is contained in:
Rusty Russell
2022-03-31 13:43:27 +10:30
parent 141d4ef675
commit 116a77f1be
10 changed files with 63 additions and 22 deletions
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10
lightningd/peer_htlcs.c
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@@ -993,7 +993,15 @@ static void htlc_accepted_hook_serialize(struct htlc_accepted_hook_payload *p,
json_add_hex_talarr(s, "payload", rs->raw_payload);
if (p->payload) {
json_add_string(s, "type", "tlv");
switch (p->payload->type) {
case ONION_V0_PAYLOAD:
json_add_string(s, "type", "legacy");
break;
case ONION_TLV_PAYLOAD:
json_add_string(s, "type", "tlv");
break;
}
if (p->payload->forward_channel)
json_add_short_channel_id(s, "short_channel_id",