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#include "invoice.h"
#include "jsonrpc.h"
#include "lightningd.h"
#include <bitcoin/address.h>
#include <bitcoin/base58.h>
#include <bitcoin/script.h>
#include <ccan/str/hex/hex.h>
#include <ccan/structeq/structeq.h>
#include <ccan/tal/str/str.h>
#include <common/bech32.h>
#include <common/bolt11.h>
#include <common/utils.h>
#include <errno.h>
#include <hsmd/gen_hsm_client_wire.h>
#include <inttypes.h>
#include <lightningd/hsm_control.h>
#include <lightningd/log.h>
#include <lightningd/options.h>
#include <sodium/randombytes.h>
#include <wire/wire_sync.h>
static const char *invoice_status_str(const struct invoice *inv)
{
if (inv->state == PAID)
return "paid";
if (inv->state == EXPIRED)
return "expired";
return "unpaid";
}
static void json_add_invoice(struct json_result *response,
const struct invoice *inv,
bool modern)
{
json_object_start(response, NULL);
json_add_string(response, "label", inv->label);
json_add_hex(response, "payment_hash", &inv->rhash, sizeof(inv->rhash));
if (inv->msatoshi)
json_add_u64(response, "msatoshi", *inv->msatoshi);
if (modern)
json_add_string(response, "status", invoice_status_str(inv));
else if (deprecated_apis && !modern)
json_add_bool(response, "complete", inv->state == PAID);
if (inv->state == PAID) {
json_add_u64(response, "pay_index", inv->pay_index);
json_add_u64(response, "msatoshi_received",
inv->msatoshi_received);
if (deprecated_apis)
json_add_u64(response, "paid_timestamp",
inv->paid_timestamp);
json_add_u64(response, "paid_at", inv->paid_timestamp);
}
if (deprecated_apis)
json_add_u64(response, "expiry_time", inv->expiry_time);
json_add_u64(response, "expires_at", inv->expiry_time);
json_object_end(response);
}
static void tell_waiter(struct command *cmd, const struct invoice *inv)
{
struct json_result *response = new_json_result(cmd);
json_add_invoice(response, inv, true);
if (inv->state == PAID)
command_success(cmd, response);
else
command_fail_detailed(cmd, -2, response,
"invoice expired during wait");
}
static void tell_waiter_deleted(struct command *cmd)
{
command_fail(cmd, "Invoice deleted during wait");
}
static void wait_on_invoice(const struct invoice *invoice, void *cmd)
{
if (invoice)
tell_waiter((struct command *) cmd, invoice);
else
tell_waiter_deleted((struct command *) cmd);
}
static bool hsm_sign_b11(const u5 *u5bytes,
const u8 *hrpu8,
secp256k1_ecdsa_recoverable_signature *rsig,
struct lightningd *ld)
{
u8 *msg = towire_hsm_sign_invoice(ld, u5bytes, hrpu8);
if (!wire_sync_write(ld->hsm_fd, take(msg)))
fatal("Could not write to HSM: %s", strerror(errno));
msg = hsm_sync_read(ld, ld);
if (!fromwire_hsm_sign_invoice_reply(msg, NULL, rsig))
fatal("HSM gave bad sign_invoice_reply %s",
tal_hex(msg, msg));
tal_free(msg);
return true;
}
static void json_invoice(struct command *cmd,
const char *buffer, const jsmntok_t *params)
{
const struct invoice *invoice;
jsmntok_t *msatoshi, *label, *desc, *exp;
u64 *msatoshi_val;
const char *label_val;
struct json_result *response = new_json_result(cmd);
struct wallet *wallet = cmd->ld->wallet;
struct bolt11 *b11;
char *b11enc;
u64 expiry = 3600;
if (!json_get_params(cmd, buffer, params,
"msatoshi", &msatoshi,
"label", &label,
"description", &desc,
"?expiry", &exp,
NULL)) {
return;
}
/* Get arguments. */
/* msatoshi */
if (json_tok_streq(buffer, msatoshi, "any"))
msatoshi_val = NULL;
else {
msatoshi_val = tal(cmd, u64);
if (!json_tok_u64(buffer, msatoshi, msatoshi_val)
|| *msatoshi_val == 0) {
command_fail(cmd,
"'%.*s' is not a valid positive number",
msatoshi->end - msatoshi->start,
buffer + msatoshi->start);
return;
}
}
/* label */
label_val = tal_strndup(cmd, buffer + label->start,
label->end - label->start);
if (wallet_invoice_find_by_label(wallet, label_val)) {
command_fail(cmd, "Duplicate label '%s'", label_val);
return;
}
if (strlen(label_val) > INVOICE_MAX_LABEL_LEN) {
command_fail(cmd, "Label '%s' over %u bytes", label_val,
INVOICE_MAX_LABEL_LEN);
return;
}
if (exp && !json_tok_u64(buffer, exp, &expiry)) {
command_fail(cmd, "Expiry '%.*s' invalid seconds",
exp->end - exp->start,
buffer + exp->start);
return;
}
invoice = wallet_invoice_create(cmd->ld->wallet,
take(msatoshi_val),
take(label_val),
expiry);
if (!invoice) {
command_fail(cmd, "Failed to create invoice on database");
return;
}
/* Construct bolt11 string. */
b11 = new_bolt11(cmd, invoice->msatoshi);
b11->chain = get_chainparams(cmd->ld);
b11->timestamp = time_now().ts.tv_sec;
b11->payment_hash = invoice->rhash;
b11->receiver_id = cmd->ld->id;
b11->min_final_cltv_expiry = cmd->ld->config.cltv_final;
b11->expiry = expiry;
if (desc->end - desc->start >= BOLT11_FIELD_BYTE_LIMIT) {
b11->description_hash = tal(b11, struct sha256);
sha256(b11->description_hash, buffer + desc->start,
desc->end - desc->start);
} else
b11->description = tal_strndup(b11, buffer + desc->start,
desc->end - desc->start);
/* FIXME: add private routes if necessary! */
b11enc = bolt11_encode(cmd, b11, false, hsm_sign_b11, cmd->ld);
json_object_start(response, NULL);
json_add_hex(response, "payment_hash",
&invoice->rhash, sizeof(invoice->rhash));
if (deprecated_apis)
json_add_u64(response, "expiry_time", invoice->expiry_time);
json_add_u64(response, "expires_at", invoice->expiry_time);
json_add_string(response, "bolt11", b11enc);
if (b11->description_hash)
json_add_string(response, "description", b11->description);
json_object_end(response);
command_success(cmd, response);
}
static const struct json_command invoice_command = {
"invoice",
json_invoice,
"Create an invoice for {msatoshi} with {label} and {description} with optional {expiry} seconds (default 1 hour)"
};
AUTODATA(json_command, &invoice_command);
static void json_add_invoices(struct json_result *response,
struct wallet *wallet,
const char *buffer, const jsmntok_t *label,
bool modern)
{
const struct invoice *i;
char *lbl = NULL;
if (label)
lbl = tal_strndup(response, &buffer[label->start], label->end - label->start);
i = NULL;
while ((i = wallet_invoice_iterate(wallet, i)) != NULL) {
if (lbl && !streq(i->label, lbl))
continue;
json_add_invoice(response, i, modern);
}
}
static void json_listinvoice_internal(struct command *cmd,
const char *buffer,
const jsmntok_t *params,
bool modern)
{
jsmntok_t *label = NULL;
struct json_result *response = new_json_result(cmd);
struct wallet *wallet = cmd->ld->wallet;
if (!json_get_params(cmd, buffer, params,
"?label", &label,
NULL)) {
return;
}
if (modern) {
json_object_start(response, NULL);
json_array_start(response, "invoices");
} else
json_array_start(response, NULL);
json_add_invoices(response, wallet, buffer, label, modern);
json_array_end(response);
if (modern)
json_object_end(response);
command_success(cmd, response);
}
/* FIXME: Deprecated! */
static void json_listinvoice(struct command *cmd,
const char *buffer, const jsmntok_t *params)
{
return json_listinvoice_internal(cmd, buffer, params, false);
}
static const struct json_command listinvoice_command = {
"listinvoice",
json_listinvoice,
"(DEPRECATED) Show invoice {label} (or all, if no {label}))",
.deprecated = true
};
AUTODATA(json_command, &listinvoice_command);
static void json_listinvoices(struct command *cmd,
const char *buffer, const jsmntok_t *params)
{
return json_listinvoice_internal(cmd, buffer, params, true);
}
static const struct json_command listinvoices_command = {
"listinvoices",
json_listinvoices,
"Show invoice {label} (or all, if no {label})"
};
AUTODATA(json_command, &listinvoices_command);
static void json_delinvoice(struct command *cmd,
const char *buffer, const jsmntok_t *params)
{
const struct invoice *i;
jsmntok_t *labeltok, *statustok;
struct json_result *response = new_json_result(cmd);
const char *label, *status, *actual_status;
struct wallet *wallet = cmd->ld->wallet;
if (!json_get_params(cmd, buffer, params,
"label", &labeltok,
"status", &statustok,
NULL)) {
return;
}
label = tal_strndup(cmd, buffer + labeltok->start,
labeltok->end - labeltok->start);
i = wallet_invoice_find_by_label(wallet, label);
if (!i) {
command_fail(cmd, "Unknown invoice");
return;
}
status = tal_strndup(cmd, buffer + statustok->start,
statustok->end - statustok->start);
/* This is time-sensitive, so only call once; otherwise error msg
* might not make sense if it changed! */
actual_status = invoice_status_str(i);
if (!streq(actual_status, status)) {
command_fail(cmd, "Invoice status is %s not %s",
actual_status, status);
return;
}
/* Get invoice details before attempting to delete, as
* otherwise the invoice will be freed. */
json_add_invoice(response, i, true);
if (!wallet_invoice_delete(wallet, i)) {
log_broken(cmd->ld->log,
"Error attempting to remove invoice %"PRIu64,
i->id);
command_fail(cmd, "Database error");
return;
}
command_success(cmd, response);
}
static const struct json_command delinvoice_command = {
"delinvoice",
json_delinvoice,
"Delete unpaid invoice {label} with {status}",
};
AUTODATA(json_command, &delinvoice_command);
static void json_waitanyinvoice(struct command *cmd,
const char *buffer, const jsmntok_t *params)
{
jsmntok_t *pay_indextok;
u64 pay_index;
struct wallet *wallet = cmd->ld->wallet;
if (!json_get_params(cmd, buffer, params,
"?lastpay_index", &pay_indextok,
NULL)) {
return;
}
if (!pay_indextok) {
pay_index = 0;
} else {
if (!json_tok_u64(buffer, pay_indextok, &pay_index)) {
command_fail(cmd, "'%.*s' is not a valid number",
pay_indextok->end - pay_indextok->start,
buffer + pay_indextok->start);
return;
}
}
/* Set command as pending. We do not know if
* wallet_invoice_waitany will return immediately
* or not, so indicating pending is safest. */
command_still_pending(cmd);
/* Find next paid invoice. */
wallet_invoice_waitany(cmd, wallet, pay_index,
&wait_on_invoice, (void*) cmd);
}
static const struct json_command waitanyinvoice_command = {
"waitanyinvoice",
json_waitanyinvoice,
"Wait for the next invoice to be paid, after {lastpay_index} (if supplied)"
};
AUTODATA(json_command, &waitanyinvoice_command);
/* Wait for an incoming payment matching the `label` in the JSON
* command. This will either return immediately if the payment has
* already been received or it may add the `cmd` to the list of
* waiters, if the payment is still pending.
*/
static void json_waitinvoice(struct command *cmd,
const char *buffer, const jsmntok_t *params)
{
const struct invoice *i;
struct wallet *wallet = cmd->ld->wallet;
jsmntok_t *labeltok;
const char *label = NULL;
if (!json_get_params(cmd, buffer, params, "label", &labeltok, NULL)) {
return;
}
/* Search in paid invoices, if found return immediately */
label = tal_strndup(cmd, buffer + labeltok->start, labeltok->end - labeltok->start);
i = wallet_invoice_find_by_label(wallet, label);
if (!i) {
command_fail(cmd, "Label not found");
return;
} else if (i->state == PAID || i->state == EXPIRED) {
tell_waiter(cmd, i);
return;
} else {
/* There is an unpaid one matching, let's wait... */
command_still_pending(cmd);
wallet_invoice_waitone(cmd, wallet, i,
&wait_on_invoice, (void *) cmd);
}
}
static const struct json_command waitinvoice_command = {
"waitinvoice",
json_waitinvoice,
"Wait for an incoming payment matching the invoice with {label}, or if the invoice expires"
};
AUTODATA(json_command, &waitinvoice_command);
static void json_decodepay(struct command *cmd,
const char *buffer, const jsmntok_t *params)
{
jsmntok_t *bolt11tok, *desctok;
struct bolt11 *b11;
struct json_result *response;
char *str, *desc, *fail;
if (!json_get_params(cmd, buffer, params,
"bolt11", &bolt11tok,
"?description", &desctok,
NULL)) {
return;
}
str = tal_strndup(cmd, buffer + bolt11tok->start,
bolt11tok->end - bolt11tok->start);
if (desctok)
desc = tal_strndup(cmd, buffer + desctok->start,
desctok->end - desctok->start);
else
desc = NULL;
b11 = bolt11_decode(cmd, str, desc, &fail);
if (!b11) {
command_fail(cmd, "Invalid bolt11: %s", fail);
return;
}
response = new_json_result(cmd);
json_object_start(response, NULL);
json_add_string(response, "currency", b11->chain->bip173_name);
if (deprecated_apis)
json_add_u64(response, "timestamp", b11->timestamp);
json_add_u64(response, "created_at", b11->timestamp);
json_add_u64(response, "expiry", b11->expiry);
json_add_pubkey(response, "payee", &b11->receiver_id);
if (b11->msatoshi)
json_add_u64(response, "msatoshi", *b11->msatoshi);
if (b11->description)
json_add_string(response, "description", b11->description);
if (b11->description_hash)
json_add_hex(response, "description_hash",
b11->description_hash,
sizeof(*b11->description_hash));
json_add_num(response, "min_final_cltv_expiry",
b11->min_final_cltv_expiry);
if (tal_len(b11->fallback)) {
struct bitcoin_address pkh;
struct ripemd160 sh;
struct sha256 wsh;
json_object_start(response, "fallback");
if (is_p2pkh(b11->fallback, &pkh)) {
json_add_string(response, "type", "P2PKH");
json_add_string(response, "addr",
bitcoin_to_base58(cmd,
b11->chain->testnet,
&pkh));
} else if (is_p2sh(b11->fallback, &sh)) {
json_add_string(response, "type", "P2SH");
json_add_string(response, "addr",
p2sh_to_base58(cmd,
b11->chain->testnet,
&sh));
} else if (is_p2wpkh(b11->fallback, &pkh)) {
char out[73 + strlen(b11->chain->bip173_name)];
json_add_string(response, "type", "P2WPKH");
if (segwit_addr_encode(out, b11->chain->bip173_name, 0,
(const u8 *)&pkh, sizeof(pkh)))
json_add_string(response, "addr", out);
} else if (is_p2wsh(b11->fallback, &wsh)) {
char out[73 + strlen(b11->chain->bip173_name)];
json_add_string(response, "type", "P2WSH");
if (segwit_addr_encode(out, b11->chain->bip173_name, 0,
(const u8 *)&wsh, sizeof(wsh)))
json_add_string(response, "addr", out);
}
json_add_hex(response, "hex",
b11->fallback, tal_len(b11->fallback));
json_object_end(response);
}
if (tal_count(b11->routes)) {
size_t i, n;
json_array_start(response, "routes");
for (i = 0; i < tal_count(b11->routes); i++) {
json_array_start(response, NULL);
for (n = 0; n < tal_count(b11->routes[i]); n++) {
json_object_start(response, NULL);
json_add_pubkey(response, "pubkey",
&b11->routes[i][n].pubkey);
json_add_short_channel_id(response,
"short_channel_id",
&b11->routes[i][n]
.short_channel_id);
json_add_u64(response, "fee_base_msat",
b11->routes[i][n].fee_base_msat);
json_add_u64(response, "fee_proportional_millionths",
b11->routes[i][n].fee_proportional_millionths);
json_add_num(response, "cltv_expiry_delta",
b11->routes[i][n]
.cltv_expiry_delta);
json_object_end(response);
}
json_array_end(response);
}
json_array_end(response);
}
if (!list_empty(&b11->extra_fields)) {
struct bolt11_field *extra;
json_array_start(response, "extra");
list_for_each(&b11->extra_fields, extra, list) {
char *data = tal_arr(cmd, char, tal_len(extra->data)+1);
size_t i;
for (i = 0; i < tal_len(extra->data); i++)
data[i] = bech32_charset[extra->data[i]];
data[i] = '\0';
json_object_start(response, NULL);
json_add_string(response, "tag",
tal_fmt(data, "%c", extra->tag));
json_add_string(response, "data", data);
tal_free(data);
json_object_end(response);
}
json_array_end(response);
}
json_add_hex(response, "payment_hash",
&b11->payment_hash, sizeof(b11->payment_hash));
json_add_string(response, "signature",
type_to_string(cmd, secp256k1_ecdsa_signature,
&b11->sig));
json_object_end(response);
command_success(cmd, response);
}
static const struct json_command decodepay_command = {
"decodepay",
json_decodepay,
"Decode {bolt11}, using {description} if necessary"
};
AUTODATA(json_command, &decodepay_command);