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keysend: Add extra-tlvs option to keysend

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Changelog-Added: keysend: You can now add extra TLVs to a payment sent via `keysend`
This commit is contained in:
Christian Decker
2021-06-18 13:27:20 +02:00
committed by Rusty Russell
parent aba9af9e12
commit 93b6c6f352
1 changed files with 26 additions and 0 deletions
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26
plugins/keysend.c
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@@ -28,6 +28,7 @@ static struct node_id my_id;
struct keysend_data {
struct preimage preimage;
struct tlv_field *extra_tlvs;
};
REGISTER_PAYMENT_MODIFIER_HEADER(keysend, struct keysend_data);
@@ -44,6 +45,9 @@ static struct keysend_data *keysend_init(struct payment *p)
randombytes_buf(&d->preimage, sizeof(d->preimage));
ccan_sha256(&payment_hash, &d->preimage, sizeof(d->preimage));
p->payment_hash = tal_dup(p, struct sha256, &payment_hash);
#if EXPERIMENTAL_FEATURES
d->extra_tlvs = NULL;
#endif
return d;
} else {
/* If we are a child payment (retry or split) we copy the
@@ -91,6 +95,16 @@ static void keysend_cb(struct keysend_data *d, struct payment *p) {
tlvstream_set_raw(&last_payload->tlv_payload->fields, PREIMAGE_TLV_TYPE,
&d->preimage, sizeof(struct preimage));
#if EXPERIMENTAL_FEATURES
if (d->extra_tlvs != NULL) {
for (size_t i = 0; i < tal_count(d->extra_tlvs); i++) {
struct tlv_field *f = &d->extra_tlvs[i];
tlvstream_set_raw(&last_payload->tlv_payload->fields,
f->numtype, f->value, f->length);
}
}
#endif
return payment_continue(p);
}
@@ -135,6 +149,10 @@ static struct command_result *json_keysend(struct command *cmd, const char *buf,
u64 *maxfee_pct_millionths;
u32 *maxdelay;
unsigned int *retryfor;
#if EXPERIMENTAL_FEATURES
struct tlv_field *extra_fields;
#endif
#if DEVELOPER
bool *use_shadow;
#endif
@@ -150,6 +168,9 @@ static struct command_result *json_keysend(struct command *cmd, const char *buf,
p_opt_def("exemptfee", param_msat, &exemptfee, AMOUNT_MSAT(5000)),
#if DEVELOPER
p_opt_def("use_shadow", param_bool, &use_shadow, true),
#endif
#if EXPERIMENTAL_FEATURES
p_opt("extratlvs", param_extra_tlvs, &extra_fields),
#endif
NULL))
return command_param_failed();
@@ -187,6 +208,11 @@ static struct command_result *json_keysend(struct command *cmd, const char *buf,
p->constraints.cltv_budget = *maxdelay;
#if EXPERIMENTAL_FEATURES
payment_mod_keysend_get_data(p)->extra_tlvs =
tal_steal(p, extra_fields);
#endif
payment_mod_exemptfee_get_data(p)->amount = *exemptfee;
#if DEVELOPER
payment_mod_shadowroute_get_data(p)->use_shadow = *use_shadow;