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plugins/pay: send payment_metadata if provided in invoice.

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Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Changelog-Added: Protocol: `pay` (and decode, etc) supports bolt11 payment_metadata a-la https://github.com/lightning/bolts/pull/912
This commit is contained in:
Rusty Russell
2022-03-31 19:40:50 +10:30
parent 7f89763f9e
commit 1c685ce3e8
5 changed files with 48 additions and 6 deletions
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14
plugins/libplugin-pay.c
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@@ -1581,7 +1581,7 @@ static struct command_result *payment_createonion_success(struct command *cmd,
/* Temporary serialization method for the tlv_payload.data until we rework the
* API that is generated from the specs to use the setter/getter interface. */
static void tlvstream_set_tlv_payload_data(struct tlv_field **stream,
struct secret *payment_secret,
const struct secret *payment_secret,
u64 total_msat)
{
u8 *ser = tal_arr(NULL, u8, 0);
@@ -1596,7 +1596,8 @@ static void payment_add_hop_onion_payload(struct payment *p,
struct route_hop *node,
struct route_hop *next,
bool final,
struct secret *payment_secret)
struct secret *payment_secret,
const u8 *payment_metadata)
{
struct createonion_request *cr = p->createonion_request;
u32 cltv = p->start_block + next->delay + 1;
@@ -1627,6 +1628,11 @@ static void payment_add_hop_onion_payload(struct payment *p,
fields, payment_secret,
root->amount.millisatoshis); /* Raw: TLV payload generation*/
}
if (payment_metadata != NULL) {
assert(final);
tlvstream_set_raw(fields, TLV_TLV_PAYLOAD_PAYMENT_METADATA,
payment_metadata, tal_bytelen(payment_metadata));
}
}
static void payment_compute_onion_payloads(struct payment *p)
@@ -1665,7 +1671,7 @@ static void payment_compute_onion_payloads(struct payment *p)
* i+1 */
payment_add_hop_onion_payload(p, &cr->hops[i], &p->route[i],
&p->route[i + 1], false,
NULL);
NULL, NULL);
tal_append_fmt(&routetxt, "%s -> ",
type_to_string(tmpctx, struct short_channel_id,
&p->route[i].scid));
@@ -1675,7 +1681,7 @@ static void payment_compute_onion_payloads(struct payment *p)
payment_add_hop_onion_payload(
p, &cr->hops[hopcount - 1], &p->route[hopcount - 1],
&p->route[hopcount - 1], true,
root->payment_secret);
root->payment_secret, root->payment_metadata);
tal_append_fmt(&routetxt, "%s",
type_to_string(tmpctx, struct short_channel_id,
&p->route[hopcount - 1].scid));