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plugin: Add extra TLVs to the invoice_payment hook

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Christian Decker 2021-06-17 16:00:17 +02:00 committed by Rusty Russell
parent 477f574569
commit 473be0f6e4
1 changed files with 36 additions and 0 deletions
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36
lightningd/invoice.c
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@ -15,6 +15,7 @@
#include <common/json_command.h>
#include <common/json_helpers.h>
#include <common/jsonrpc_errors.h>
#include <common/onion.h>
#include <common/overflows.h>
#include <common/param.h>
#include <common/random_select.h>
@ -167,6 +168,38 @@ struct invoice_payment_hook_payload {
/* FIXME: Include raw payload! */
};
#ifdef DEVELOPER
static void invoice_payment_add_tlvs(struct json_stream *stream,
struct htlc_set *hset)
{
struct htlc_in *hin;
struct tlv_tlv_payload *tlvs;
assert(tal_count(hset->htlcs) > 0);
/* Pick the first HTLC as representative for the entire set. */
hin = hset->htlcs[0];
if (hin->payload->type != ONION_TLV_PAYLOAD)
return;
tlvs = hin->payload->tlv;
json_array_start(stream, "extratlvs");
for (size_t i = 0; i < tal_count(tlvs->fields); i++) {
struct tlv_field *field = &tlvs->fields[i];
/* If we have metadata attached it is not an extra TLV field. */
if (field->meta == NULL) {
json_object_start(stream, NULL);
json_add_u64(stream, "type", field->numtype);
json_add_num(stream, "length", field->length);
json_add_hex_talarr(stream, "value", field->value);
json_object_end(stream);
}
}
json_array_end(stream);
}
#endif
static void
invoice_payment_serialize(struct invoice_payment_hook_payload *payload,
struct json_stream *stream,
@ -178,6 +211,9 @@ invoice_payment_serialize(struct invoice_payment_hook_payload *payload,
json_add_string(stream, "msat",
type_to_string(tmpctx, struct amount_msat,
&payload->msat));
#ifdef DEVELOPER
invoice_payment_add_tlvs(stream, payload->set);
#endif
json_object_end(stream); /* .payment */
}