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json-rpc: Add the sendonion RPC command

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This commit is contained in:
Christian Decker 2019-11-07 23:14:47 +01:00
parent 57f13af1ec
commit 42277a7ad4
1 changed files with 91 additions and 1 deletions
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92
lightningd/pay.c
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@ -829,7 +829,7 @@ send_payment(struct lightningd *ld,
return NULL;
}
UNNEEDED static struct command_result *
static struct command_result *
param_route_hop(struct command *cmd, const char *name, const char *buffer,
const jsmntok_t *tok, struct route_hop **hop)
{
@ -905,6 +905,96 @@ param_route_hop(struct command *cmd, const char *name, const char *buffer,
return NULL;
}
static struct command_result *json_sendonion(struct command *cmd,
const char *buffer,
const jsmntok_t *obj UNNEEDED,
const jsmntok_t *params)
{
u8 *onion;
struct onionpacket *packet;
enum onion_type failcode;
struct htlc_out *hout;
struct route_hop *first_hop;
struct sha256 *payment_hash;
struct channel *channel;
struct lightningd *ld = cmd->ld;
struct wallet_payment *payment;
const char *label;
if (!param(cmd, buffer, params,
p_req("onion", param_bin_from_hex, &onion),
p_req("first_hop", param_route_hop, &first_hop),
p_req("payment_hash", param_sha256, &payment_hash),
p_opt("label", param_escaped_string, &label),
NULL))
return command_param_failed();
packet = parse_onionpacket(cmd, onion, tal_bytelen(onion), &failcode);
if (!packet)
return command_fail(cmd, JSONRPC2_INVALID_PARAMS,
"Could not parse the onion. Parsing failed "
"with failcode=%d",
failcode);
/* FIXME if the user specified a short_channel_id, but no peer nodeid,
* we need to resolve that first. */
channel = active_channel_by_id(ld, &first_hop->nodeid, NULL);
if (!channel) {
struct json_stream *data
= json_stream_fail(cmd, PAY_TRY_OTHER_ROUTE,
"No connection to first "
"peer found");
json_add_routefail_info(data, 0, WIRE_UNKNOWN_NEXT_PEER,
&ld->id, &first_hop->channel_id,
node_id_idx(&ld->id, &first_hop->nodeid),
NULL);
json_object_end(data);
return command_failed(cmd, data);
}
failcode = send_onion(cmd->ld, packet, first_hop, payment_hash, channel,
&hout);
payment = tal(hout, struct wallet_payment);
payment->id = 0;
payment->payment_hash = *payment_hash;
payment->status = PAYMENT_PENDING;
payment->msatoshi = AMOUNT_MSAT(0);
payment->msatoshi_sent = first_hop->amount;
payment->timestamp = time_now().ts.tv_sec;
/* These are not available for sendonion payments since the onion is
* opaque and we can't extract them. Errors have to be handled
* externally, since we can't decrypt them.*/
payment->destination = NULL;
payment->payment_preimage = NULL;
payment->path_secrets = NULL;
payment->route_nodes = NULL;
payment->route_channels = NULL;
payment->bolt11 = NULL;
if (label != NULL)
payment->label = tal_strdup(payment, label);
else
payment->label = NULL;
/* We write this into db when HTLC is actually sent. */
wallet_payment_setup(ld->wallet, payment);
add_sendpay_waiter(ld, cmd, payment_hash);
return command_still_pending(cmd);
}
static const struct json_command sendonion_command = {
"sendonion",
"payment",
json_sendonion,
"Send a payment with a pre-computed onion."
};
AUTODATA(json_command, &sendonion_command);
/*-----------------------------------------------------------------------------
JSON-RPC sendpay interface
-----------------------------------------------------------------------------*/