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rgb-cln/lightningd/options.c

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#include "config.h"
#include <ccan/array_size/array_size.h>
#include <ccan/err/err.h>
#include <ccan/json_escape/json_escape.h>
#include <ccan/mem/mem.h>
#include <ccan/opt/opt.h>
#include <ccan/opt/private.h>
#include <ccan/str/hex/hex.h>
#include <ccan/tal/path/path.h>
#include <ccan/tal/str/str.h>
#include <common/configdir.h>
#include <common/features.h>
#include <common/hsm_encryption.h>
#include <common/json_command.h>
#include <common/json_param.h>
#include <common/type_to_string.h>
#include <common/version.h>
#include <common/wireaddr.h>
#include <dirent.h>
#include <errno.h>
#include <lightningd/chaintopology.h>
#include <lightningd/options.h>
#include <lightningd/plugin.h>
#include <lightningd/subd.h>
#include <sys/stat.h>
#include <sys/wait.h>
/* Unless overridden, we exit with status 1 when option parsing fails */
static int opt_exitcode = 1;
static void opt_log_stderr_exitcode(const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
vfprintf(stderr, fmt, ap);
fprintf(stderr, "\n");
va_end(ap);
exit(opt_exitcode);
}
/* Declare opt_add_addr here, because we we call opt_add_addr
* and opt_announce_addr vice versa
*/
static char *opt_add_addr(const char *arg, struct lightningd *ld);
/* FIXME: Put into ccan/time. */
#define TIME_FROM_SEC(sec) { { .tv_nsec = 0, .tv_sec = sec } }
#define TIME_FROM_MSEC(msec) \
{ { .tv_nsec = ((msec) % 1000) * 1000000, .tv_sec = (msec) / 1000 } }
static char *opt_set_u64(const char *arg, u64 *u)
{
char *endp;
unsigned long long l;
assert(arg != NULL);
/* This is how the manpage says to do it. Yech. */
errno = 0;
l = strtoull(arg, &endp, 0);
if (*endp || !arg[0])
return tal_fmt(NULL, "'%s' is not a number", arg);
*u = l;
if (errno || *u != l)
return tal_fmt(NULL, "'%s' is out of range", arg);
return NULL;
}
static char *opt_set_u32(const char *arg, u32 *u)
{
char *endp;
unsigned long l;
assert(arg != NULL);
/* This is how the manpage says to do it. Yech. */
errno = 0;
l = strtoul(arg, &endp, 0);
if (*endp || !arg[0])
return tal_fmt(NULL, "'%s' is not a number", arg);
*u = l;
if (errno || *u != l)
return tal_fmt(NULL, "'%s' is out of range", arg);
return NULL;
}
static char *opt_set_s32(const char *arg, s32 *u)
{
char *endp;
long l;
assert(arg != NULL);
/* This is how the manpage says to do it. Yech. */
errno = 0;
l = strtol(arg, &endp, 0);
if (*endp || !arg[0])
return tal_fmt(NULL, "'%s' is not a number", arg);
*u = l;
if (errno || *u != l)
return tal_fmt(NULL, "'%s' is out of range", arg);
return NULL;
}
static char *opt_set_mode(const char *arg, mode_t *m)
{
char *endp;
long l;
assert(arg != NULL);
/* Ensure length, and starts with 0. */
if (strlen(arg) != 4 || arg[0] != '0')
return tal_fmt(NULL, "'%s' is not a file mode", arg);
/* strtol, manpage, yech. */
errno = 0;
l = strtol(arg, &endp, 8); /* Octal. */
if (errno || *endp)
return tal_fmt(NULL, "'%s' is not a file mode", arg);
*m = l;
/* Range check not needed, previous strlen checks ensures only
* 9-bit, which fits mode_t (unless your Unix is seriously borked).
*/
return NULL;
}
static char *opt_force_feerates(const char *arg, struct lightningd *ld)
{
char **vals = tal_strsplit(tmpctx, arg, "/", STR_EMPTY_OK);
size_t n;
/* vals has NULL at end, enum feerate is 0 based */
if (tal_count(vals) - 1 > FEERATE_PENALTY + 1)
return "Too many values";
if (!ld->force_feerates)
ld->force_feerates = tal_arr(ld, u32, FEERATE_PENALTY + 1);
n = 0;
for (size_t i = 0; i < tal_count(ld->force_feerates); i++) {
char *err = opt_set_u32(vals[n], &ld->force_feerates[i]);
if (err)
return err;
fprintf(stderr, "Set feerate %zu based on val %zu\n", i, n);
if (vals[n+1])
n++;
}
return NULL;
}
static char *fmt_force_feerates(const tal_t *ctx, const u32 *force_feerates)
{
char *ret;
size_t last;
if (!force_feerates)
return NULL;
ret = tal_fmt(ctx, "%i", force_feerates[0]);
last = 0;
for (size_t i = 1; i < tal_count(force_feerates); i++) {
if (force_feerates[i] == force_feerates[i-1])
continue;
/* Different? Catchup! */
for (size_t j = last + 1; j <= i; j++)
tal_append_fmt(&ret, "/%i", force_feerates[j]);
last = i;
}
return ret;
}
#if EXPERIMENTAL_FEATURES
static char *opt_set_accept_extra_tlv_types(const char *arg,
struct lightningd *ld)
{
char *endp, **elements = tal_strsplit(NULL, arg, ",", STR_NO_EMPTY);;
unsigned long long l;
u64 u;
for (int i = 0; elements[i] != NULL; i++) {
/* This is how the manpage says to do it. Yech. */
errno = 0;
l = strtoull(elements[i], &endp, 0);
if (*endp || !arg[0])
return tal_fmt(NULL, "'%s' is not a number", arg);
u = l;
if (errno || u != l)
return tal_fmt(NULL, "'%s' is out of range", arg);
tal_arr_expand(&ld->accept_extra_tlv_types, u);
}
tal_free(elements);
return NULL;
}
#endif
#if EXPERIMENTAL_FEATURES /* BOLT7 DNS RFC #911 */
/* Returns the number of wireaddr types already announced */
static size_t num_announced_types(enum wire_addr_type type, struct lightningd *ld)
{
size_t num = 0;
for (size_t i = 0; i < tal_count(ld->proposed_wireaddr); i++) {
if (ld->proposed_wireaddr[i].itype != ADDR_INTERNAL_WIREADDR)
continue;
if (ld->proposed_wireaddr[i].u.wireaddr.type != type)
continue;
if (ld->proposed_listen_announce[i] & ADDR_ANNOUNCE)
num++;
}
return num;
}
#endif
static char *opt_add_addr_withtype(const char *arg,
struct lightningd *ld,
enum addr_listen_announce ala,
bool wildcard_ok)
{
char const *err_msg;
struct wireaddr_internal wi;
bool dns_ok;
char *address;
u16 port;
assert(arg != NULL);
dns_ok = !ld->always_use_proxy && ld->config.use_dns;
/* Will be overridden in next call iff has port */
port = 0;
if (!separate_address_and_port(tmpctx, arg, &address, &port))
return tal_fmt(NULL, "Unable to parse address:port '%s'", arg);
if (is_ipaddr(address)
|| is_toraddr(address)
|| is_wildcardaddr(address)
|| ala != ADDR_ANNOUNCE) {
if (!parse_wireaddr_internal(arg, &wi, ld->portnum,
wildcard_ok, dns_ok, false,
deprecated_apis, &err_msg)) {
return tal_fmt(NULL, "Unable to parse address '%s': %s", arg, err_msg);
}
/* Sanity check for exact duplicates. */
for (size_t i = 0; i < tal_count(ld->proposed_wireaddr); i++) {
/* Only compare announce vs announce and bind vs bind */
if ((ld->proposed_listen_announce[i] & ala) == 0)
continue;
if (wireaddr_internal_eq(&ld->proposed_wireaddr[i], &wi))
return tal_fmt(NULL, "Duplicate %s address %s",
ala & ADDR_ANNOUNCE ? "announce" : "listen",
type_to_string(tmpctx, struct wireaddr_internal, &wi));
}
tal_arr_expand(&ld->proposed_listen_announce, ala);
tal_arr_expand(&ld->proposed_wireaddr, wi);
}
#if EXPERIMENTAL_FEATURES /* BOLT7 DNS RFC #911 */
/* Add ADDR_TYPE_DNS to announce DNS hostnames */
if (is_dnsaddr(address) && ala & ADDR_ANNOUNCE) {
/* BOLT-hostnames #7:
* The origin node:
* ...
* - MUST NOT announce more than one `type 5` DNS hostname.
*/
if (num_announced_types(ADDR_TYPE_DNS, ld) > 0) {
return tal_fmt(NULL, "Only one DNS can be announced");
}
memset(&wi, 0, sizeof(wi));
wi.itype = ADDR_INTERNAL_WIREADDR;
wi.u.wireaddr.type = ADDR_TYPE_DNS;
wi.u.wireaddr.addrlen = strlen(address);
strncpy((char * restrict)&wi.u.wireaddr.addr,
address, sizeof(wi.u.wireaddr.addr) - 1);
if (port == 0)
wi.u.wireaddr.port = ld->portnum;
else
wi.u.wireaddr.port = port;
tal_arr_expand(&ld->proposed_listen_announce, ADDR_ANNOUNCE);
tal_arr_expand(&ld->proposed_wireaddr, wi);
}
#endif
return NULL;
}
static char *opt_add_announce_addr(const char *arg, struct lightningd *ld)
{
size_t n = tal_count(ld->proposed_wireaddr);
char *err;
/* Check for autotor and reroute the call to --addr */
if (strstarts(arg, "autotor:"))
return opt_add_addr(arg, ld);
/* Check for statictor and reroute the call to --addr */
if (strstarts(arg, "statictor:"))
return opt_add_addr(arg, ld);
err = opt_add_addr_withtype(arg, ld, ADDR_ANNOUNCE, false);
if (err)
return err;
/* Can't announce anything that's not a normal wireaddr. */
if (ld->proposed_wireaddr[n].itype != ADDR_INTERNAL_WIREADDR)
return tal_fmt(NULL, "address '%s' is not announceable",
arg);
return NULL;
}
static char *opt_add_addr(const char *arg, struct lightningd *ld)
{
struct wireaddr_internal addr;
/* handle in case you used the addr option with an .onion */
if (parse_wireaddr_internal(arg, &addr, 0, true, false, true,
deprecated_apis, NULL)) {
if (addr.itype == ADDR_INTERNAL_WIREADDR &&
addr.u.wireaddr.type == ADDR_TYPE_TOR_V3) {
log_unusual(ld->log, "You used `--addr=%s` option with an .onion address, please use"
" `--announce-addr` ! You are lucky in this node live some wizards and"
" fairies, we have done this for you and announce, Be as hidden as wished",
arg);
return opt_add_announce_addr(arg, ld);
}
}
/* the intended call */
return opt_add_addr_withtype(arg, ld, ADDR_LISTEN_AND_ANNOUNCE, true);
}
static char *opt_subdaemon(const char *arg, struct lightningd *ld)
{
char *subdaemon;
char *sdpath;
/* example arg: "hsmd:remote_hsmd" */
size_t colonoff = strcspn(arg, ":");
if (!arg[colonoff])
return tal_fmt(NULL, "argument must contain ':'");
subdaemon = tal_strndup(ld, arg, colonoff);
if (!is_subdaemon(subdaemon))
return tal_fmt(NULL, "\"%s\" is not a subdaemon", subdaemon);
/* Make the value a tal-child of the subdaemon */
sdpath = tal_strdup(subdaemon, arg + colonoff + 1);
/* Remove any preexisting alt subdaemon mapping (and
* implicitly, the sdpath). */
tal_free(strmap_del(&ld->alt_subdaemons, subdaemon, NULL));
strmap_add(&ld->alt_subdaemons, subdaemon, sdpath);
return NULL;
}
static char *opt_add_bind_addr(const char *arg, struct lightningd *ld)
{
struct wireaddr_internal addr;
/* handle in case you used the bind option with an .onion */
if (parse_wireaddr_internal(arg, &addr, 0, true, false, true,
deprecated_apis, NULL)) {
if (addr.itype == ADDR_INTERNAL_WIREADDR &&
addr.u.wireaddr.type == ADDR_TYPE_TOR_V3) {
log_unusual(ld->log, "You used `--bind-addr=%s` option with an .onion address,"
" You are lucky in this node live some wizards and"
" fairies, we have done this for you and don't announce, Be as hidden as wished",
arg);
return NULL;
}
}
/* the intended call */
return opt_add_addr_withtype(arg, ld, ADDR_LISTEN, true);
}
static void opt_show_u64(char buf[OPT_SHOW_LEN], const u64 *u)
{
snprintf(buf, OPT_SHOW_LEN, "%"PRIu64, *u);
}
static void opt_show_u32(char buf[OPT_SHOW_LEN], const u32 *u)
{
snprintf(buf, OPT_SHOW_LEN, "%"PRIu32, *u);
}
static void opt_show_s32(char buf[OPT_SHOW_LEN], const s32 *u)
{
snprintf(buf, OPT_SHOW_LEN, "%"PRIi32, *u);
}
static void opt_show_mode(char buf[OPT_SHOW_LEN], const mode_t *m)
{
snprintf(buf, OPT_SHOW_LEN, "\"%04o\"", (int) *m);
}
static char *opt_set_rgb(const char *arg, struct lightningd *ld)
{
assert(arg != NULL);
ld->rgb = tal_free(ld->rgb);
/* BOLT #7:
*
* - Note: the first byte of `rgb_color` is the red value, the second
* byte is the green value, and the last byte is the blue value.
*/
ld->rgb = tal_hexdata(ld, arg, strlen(arg));
if (!ld->rgb || tal_count(ld->rgb) != 3)
return tal_fmt(NULL, "rgb '%s' is not six hex digits", arg);
return NULL;
}
static char *opt_set_alias(const char *arg, struct lightningd *ld)
{
assert(arg != NULL);
ld->alias = tal_free(ld->alias);
/* BOLT #7:
*
* * [`32*byte`:`alias`]
*...
* - MUST set `alias` to a valid UTF-8 string, with any
* `alias` trailing-bytes equal to 0.
*/
if (strlen(arg) > 32)
return tal_fmt(NULL, "Alias '%s' is over 32 characters", arg);
ld->alias = tal_arrz(ld, u8, 33);
strncpy((char*)ld->alias, arg, 32);
return NULL;
}
static char *opt_set_offline(struct lightningd *ld)
{
ld->reconnect = false;
ld->listen = false;
return NULL;
}
static char *opt_add_proxy_addr(const char *arg, struct lightningd *ld)
{
bool needed_dns = false;
tal_free(ld->proxyaddr);
/* We use a tal_arr here, so we can marshal it to gossipd */
ld->proxyaddr = tal_arr(ld, struct wireaddr, 1);
if (!parse_wireaddr(arg, ld->proxyaddr, 9050,
ld->always_use_proxy ? &needed_dns : NULL,
NULL)) {
return tal_fmt(NULL, "Unable to parse Tor proxy address '%s' %s",
arg, needed_dns ? " (needed dns)" : "");
}
return NULL;
}
static char *opt_add_plugin(const char *arg, struct lightningd *ld)
{
struct plugin *p;
if (plugin_blacklisted(ld->plugins, arg)) {
log_info(ld->log, "%s: disabled via disable-plugin", arg);
return NULL;
}
p = plugin_register(ld->plugins, arg, NULL, false, NULL, NULL);
if (!p)
return tal_fmt(NULL, "Failed to register %s: %s", arg, strerror(errno));
return NULL;
}
static char *opt_disable_plugin(const char *arg, struct lightningd *ld)
{
plugin_blacklist(ld->plugins, arg);
return NULL;
}
static char *opt_add_plugin_dir(const char *arg, struct lightningd *ld)
{
return add_plugin_dir(ld->plugins, arg, false);
}
static char *opt_clear_plugins(struct lightningd *ld)
{
clear_plugins(ld->plugins);
return NULL;
}
static char *opt_important_plugin(const char *arg, struct lightningd *ld)
{
struct plugin *p;
if (plugin_blacklisted(ld->plugins, arg)) {
log_info(ld->log, "%s: disabled via disable-plugin", arg);
return NULL;
}
p = plugin_register(ld->plugins, arg, NULL, true, NULL, NULL);
if (!p)
return tal_fmt(NULL, "Failed to register %s: %s", arg, strerror(errno));
return NULL;
}
/* Test code looks in logs, so we print prompts to log as well as stdout */
static void prompt(struct lightningd *ld, const char *str)
{
printf("%s\n", str);
log_debug(ld->log, "PROMPT: %s", str);
/* If we don't flush we might end up being buffered and we might seem
* to hang while we wait for the password. */
fflush(stdout);
}
/* Prompt the user to enter a password, from which will be derived the key used
* for `hsm_secret` encryption.
* The algorithm used to derive the key is Argon2(id), to which libsodium
* defaults. However argon2id-specific constants are used in case someone runs it
* with a libsodium version which default constants differs (typically <1.0.9).
*/
static char *opt_set_hsm_password(struct lightningd *ld)
{
char *passwd, *passwd_confirmation, *err_msg;
int is_encrypted;
is_encrypted = is_hsm_secret_encrypted("hsm_secret");
if (is_encrypted == -1)
return tal_fmt(NULL, "Could not access 'hsm_secret': %s",
strerror(errno));
prompt(ld, "The hsm_secret is encrypted with a password. In order to "
"decrypt it and start the node you must provide the password.");
prompt(ld, "Enter hsm_secret password:");
passwd = read_stdin_pass_with_exit_code(&err_msg, &opt_exitcode);
if (!passwd)
return err_msg;
if (!is_encrypted) {
prompt(ld, "Confirm hsm_secret password:");
fflush(stdout);
passwd_confirmation = read_stdin_pass_with_exit_code(&err_msg, &opt_exitcode);
if (!passwd_confirmation)
return err_msg;
if (!streq(passwd, passwd_confirmation)) {
opt_exitcode = EXITCODE_HSM_BAD_PASSWORD;
return "Passwords confirmation mismatch.";
}
free(passwd_confirmation);
}
prompt(ld, "");
ld->config.keypass = tal(NULL, struct secret);
opt_exitcode = hsm_secret_encryption_key_with_exitcode(passwd, ld->config.keypass, &err_msg);
if (opt_exitcode > 0)
return err_msg;
ld->encrypted_hsm = true;
free(passwd);
return NULL;
}
#if DEVELOPER
static char *opt_subprocess_debug(const char *optarg, struct lightningd *ld)
{
ld->dev_debug_subprocess = optarg;
return NULL;
}
static char *opt_force_privkey(const char *optarg, struct lightningd *ld)
{
tal_free(ld->dev_force_privkey);
ld->dev_force_privkey = tal(ld, struct privkey);
if (!hex_decode(optarg, strlen(optarg),
ld->dev_force_privkey, sizeof(*ld->dev_force_privkey)))
return tal_fmt(NULL, "Unable to parse privkey '%s'", optarg);
return NULL;
}
static char *opt_force_bip32_seed(const char *optarg, struct lightningd *ld)
{
tal_free(ld->dev_force_bip32_seed);
ld->dev_force_bip32_seed = tal(ld, struct secret);
if (!hex_decode(optarg, strlen(optarg),
ld->dev_force_bip32_seed,
sizeof(*ld->dev_force_bip32_seed)))
return tal_fmt(NULL, "Unable to parse secret '%s'", optarg);
return NULL;
}
static char *opt_force_tmp_channel_id(const char *optarg, struct lightningd *ld)
{
tal_free(ld->dev_force_tmp_channel_id);
ld->dev_force_tmp_channel_id = tal(ld, struct channel_id);
if (!hex_decode(optarg, strlen(optarg),
ld->dev_force_tmp_channel_id,
sizeof(*ld->dev_force_tmp_channel_id)))
return tal_fmt(NULL, "Unable to parse channel id '%s'", optarg);
return NULL;
}
static char *opt_force_channel_secrets(const char *optarg,
struct lightningd *ld)
{
char **strs;
tal_free(ld->dev_force_channel_secrets);
tal_free(ld->dev_force_channel_secrets_shaseed);
ld->dev_force_channel_secrets = tal(ld, struct secrets);
ld->dev_force_channel_secrets_shaseed = tal(ld, struct sha256);
strs = tal_strsplit(tmpctx, optarg, "/", STR_EMPTY_OK);
if (tal_count(strs) != 7) /* Last is NULL */
return "Expected 6 hex secrets separated by /";
if (!hex_decode(strs[0], strlen(strs[0]),
&ld->dev_force_channel_secrets->funding_privkey,
sizeof(ld->dev_force_channel_secrets->funding_privkey))
|| !hex_decode(strs[1], strlen(strs[1]),
&ld->dev_force_channel_secrets->revocation_basepoint_secret,
sizeof(ld->dev_force_channel_secrets->revocation_basepoint_secret))
|| !hex_decode(strs[2], strlen(strs[2]),
&ld->dev_force_channel_secrets->payment_basepoint_secret,
sizeof(ld->dev_force_channel_secrets->payment_basepoint_secret))
|| !hex_decode(strs[3], strlen(strs[3]),
&ld->dev_force_channel_secrets->delayed_payment_basepoint_secret,
sizeof(ld->dev_force_channel_secrets->delayed_payment_basepoint_secret))
|| !hex_decode(strs[4], strlen(strs[4]),
&ld->dev_force_channel_secrets->htlc_basepoint_secret,
sizeof(ld->dev_force_channel_secrets->htlc_basepoint_secret))
|| !hex_decode(strs[5], strlen(strs[5]),
ld->dev_force_channel_secrets_shaseed,
sizeof(*ld->dev_force_channel_secrets_shaseed)))
return "Expected 6 hex secrets separated by /";
return NULL;
}
static char *opt_force_featureset(const char *optarg,
struct lightningd *ld)
{
char **parts = tal_strsplit(tmpctx, optarg, "/", STR_EMPTY_OK);
if (tal_count(parts) != NUM_FEATURE_PLACE + 1) {
if (!strstarts(optarg, "-") && !strstarts(optarg, "+"))
return "Expected 5 feature sets (init/globalinit/"
" node_announce/channel/bolt11) each terminated by /"
" OR +/-<single_bit_num>";
char *endp;
long int n = strtol(optarg + 1, &endp, 10);
const struct feature_set *f;
if (*endp || endp == optarg + 1)
return "Invalid feature number";
f = feature_set_for_feature(NULL, n);
if (strstarts(optarg, "-")
&& !feature_set_sub(ld->our_features, take(f)))
return "Feature unknown";
if (strstarts(optarg, "+")
&& !feature_set_or(ld->our_features, take(f)))
return "Feature already flagged-on";
return NULL;
}
for (size_t i = 0; parts[i]; i++) {
char **bits = tal_strsplit(tmpctx, parts[i], ",", STR_EMPTY_OK);
tal_resize(&ld->our_features->bits[i], 0);
for (size_t j = 0; bits[j]; j++) {
char *endp;
long int n = strtol(bits[j], &endp, 10);
if (*endp || endp == bits[j])
return "Invalid bitnumber";
set_feature_bit(&ld->our_features->bits[i], n);
}
}
return NULL;
}
static void dev_register_opts(struct lightningd *ld)
{
/* We might want to debug plugins, which are started before normal
* option parsing */
opt_register_early_arg("--dev-debugger=<subprocess>", opt_subprocess_debug, NULL,
ld, "Invoke gdb at start of <subprocess>");
opt_register_early_noarg("--dev-no-plugin-checksum", opt_set_bool,
&ld->dev_no_plugin_checksum,
"Don't checksum plugins to detect changes");
opt_register_noarg("--dev-no-reconnect", opt_set_invbool,
&ld->reconnect,
"Disable automatic reconnect-attempts by this node, but accept incoming");
opt_register_noarg("--dev-fast-reconnect", opt_set_bool,
&ld->dev_fast_reconnect,
"Make max default reconnect delay 3 (not 300) seconds");
opt_register_noarg("--dev-fail-on-subdaemon-fail", opt_set_bool,
&ld->dev_subdaemon_fail, opt_hidden);
opt_register_arg("--dev-disconnect=<filename>", opt_subd_dev_disconnect,
NULL, ld, "File containing disconnection points");
opt_register_noarg("--dev-allow-localhost", opt_set_bool,
&ld->dev_allow_localhost,
"Announce and allow announcments for localhost address");
opt_register_arg("--dev-bitcoind-poll", opt_set_u32, opt_show_u32,
&ld->topology->poll_seconds,
"Time between polling for new transactions");
opt_register_noarg("--dev-fast-gossip", opt_set_bool,
&ld->dev_fast_gossip,
"Make gossip broadcast 1 second, etc");
opt_register_noarg("--dev-fast-gossip-prune", opt_set_bool,
&ld->dev_fast_gossip_prune,
"Make gossip pruning 30 seconds");
opt_register_arg("--dev-gossip-time", opt_set_u32, opt_show_u32,
&ld->dev_gossip_time,
"UNIX time to override gossipd to use.");
opt_register_arg("--dev-force-privkey", opt_force_privkey, NULL, ld,
"Force HSM to use this as node private key");
opt_register_arg("--dev-force-bip32-seed", opt_force_bip32_seed, NULL, ld,
"Force HSM to use this as bip32 seed");
opt_register_arg("--dev-force-channel-secrets", opt_force_channel_secrets, NULL, ld,
"Force HSM to use these for all per-channel secrets");
opt_register_arg("--dev-max-funding-unconfirmed-blocks",
opt_set_u32, opt_show_u32,
&ld->dev_max_funding_unconfirmed,
"Maximum number of blocks we wait for a channel "
"funding transaction to confirm, if we are the "
"fundee.");
opt_register_arg("--dev-force-tmp-channel-id", opt_force_tmp_channel_id, NULL, ld,
"Force the temporary channel id, instead of random");
opt_register_noarg("--dev-no-htlc-timeout", opt_set_bool,
&ld->dev_no_htlc_timeout,
"Don't kill channeld if HTLCs not confirmed within 30 seconds");
opt_register_noarg("--dev-fail-process-onionpacket", opt_set_bool,
&dev_fail_process_onionpacket,
"Force all processing of onion packets to fail");
opt_register_noarg("--dev-no-version-checks", opt_set_bool,
&ld->dev_no_version_checks,
"Skip calling subdaemons with --version on startup");
opt_register_early_noarg("--dev-builtin-plugins-unimportant",
opt_set_bool,
&ld->plugins->dev_builtin_plugins_unimportant,
"Make builtin plugins unimportant so you can plugin stop them.");
opt_register_arg("--dev-force-features", opt_force_featureset, NULL, ld,
"Force the init/globalinit/node_announce/channel/bolt11/ features, each comma-separated bitnumbers OR a single +/-<bitnumber>");
opt_register_arg("--dev-timeout-secs", opt_set_u32, opt_show_u32,
&ld->config.connection_timeout_secs,
"Seconds to timeout if we don't receive INIT from peer");
opt_register_noarg("--dev-no-modern-onion", opt_set_bool,
&ld->dev_ignore_modern_onion,
"Ignore modern onion messages");
opt_register_noarg("--dev-no-obsolete-onion", opt_set_bool,
&ld->dev_ignore_obsolete_onion,
"Ignore obsolete onion messages");
opt_register_arg("--dev-disable-commit-after",
opt_set_intval, opt_show_intval,
&ld->dev_disable_commit,
"Disable commit timer after this many commits");
opt_register_noarg("--dev-no-ping-timer", opt_set_bool,
&ld->dev_no_ping_timer,
"Don't hang up if we don't get a ping response");
}
#endif /* DEVELOPER */
static const struct config testnet_config = {
/* 6 blocks to catch cheating attempts. */
.locktime_blocks = 6,
/* They can have up to 14 days, maximumu value that lnd will ask for by default. */
/* FIXME Convince lnd to use more reasonable defaults... */
.locktime_max = 14 * 24 * 6,
/* We're fairly trusting, under normal circumstances. */
.anchor_confirms = 1,
/* Testnet blockspace is free. */
.max_concurrent_htlcs = 483,
/* channel defaults for htlc min/max values */
.htlc_minimum_msat = AMOUNT_MSAT(0),
.htlc_maximum_msat = AMOUNT_MSAT(-1ULL), /* no limit */
/* Max amount of dust allowed per channel (50ksat) */
.max_dust_htlc_exposure_msat = AMOUNT_MSAT(50000000),
/* Be aggressive on testnet. */
.cltv_expiry_delta = 6,
.cltv_final = 10,
/* Send commit 10msec after receiving; almost immediately. */
.commit_time_ms = 10,
/* Allow dust payments */
.fee_base = 1,
/* Take 0.001% */
.fee_per_satoshi = 10,
/* Testnet sucks */
.ignore_fee_limits = true,
/* Rescan 5 hours of blocks on testnet, it's reorg happy */
.rescan = 30,
.use_dns = true,
/* Turn off IP address announcement discovered via peer `remote_addr` */
.disable_ip_discovery = false,
/* Sets min_effective_htlc_capacity - at 1000$/BTC this is 10ct */
.min_capacity_sat = 10000,
/* 1 minute should be enough for anyone! */
.connection_timeout_secs = 60,
.exp_offers = IFEXPERIMENTAL(true, false),
};
/* aka. "Dude, where's my coins?" */
static const struct config mainnet_config = {
/* ~one day to catch cheating attempts. */
.locktime_blocks = 6 * 24,
/* They can have up to 14 days, maximumu value that lnd will ask for by default. */
/* FIXME Convince lnd to use more reasonable defaults... */
.locktime_max = 14 * 24 * 6,
/* We're fairly trusting, under normal circumstances. */
.anchor_confirms = 3,
/* While up to 483 htlcs are possible we do 30 by default (as eclair does) to save blockspace */
.max_concurrent_htlcs = 30,
/* defaults for htlc min/max values */
.htlc_minimum_msat = AMOUNT_MSAT(0),
.htlc_maximum_msat = AMOUNT_MSAT(-1ULL), /* no limit */
/* Max amount of dust allowed per channel (50ksat) */
.max_dust_htlc_exposure_msat = AMOUNT_MSAT(50000000),
/* BOLT #2:
*
* 1. the `cltv_expiry_delta` for channels, `3R+2G+2S`: if in doubt, a
* `cltv_expiry_delta` of at least 34 is reasonable (R=2, G=2, S=12)
*/
/* R = 2, G = 2, S = 12 */
.cltv_expiry_delta = 34,
/* BOLT #2:
*
* 4. the minimum `cltv_expiry` accepted for terminal payments: the
* worst case for the terminal node C is `2R+G+S` blocks */
.cltv_final = 18,
/* Send commit 10msec after receiving; almost immediately. */
.commit_time_ms = 10,
/* Discourage dust payments */
.fee_base = 1000,
/* Take 0.001% */
.fee_per_satoshi = 10,
/* Mainnet should have more stable fees */
.ignore_fee_limits = false,
/* Rescan 2.5 hours of blocks on startup, it's not so reorg happy */
.rescan = 15,
.use_dns = true,
/* Turn off IP address announcement discovered via peer `remote_addr` */
.disable_ip_discovery = false,
/* Sets min_effective_htlc_capacity - at 1000$/BTC this is 10ct */
.min_capacity_sat = 10000,
/* 1 minute should be enough for anyone! */
.connection_timeout_secs = 60,
.exp_offers = IFEXPERIMENTAL(true, false),
};
static void check_config(struct lightningd *ld)
{
/* BOLT #2:
*
* The receiving node MUST fail the channel if:
*...
* - `max_accepted_htlcs` is greater than 483.
*/
if (ld->config.max_concurrent_htlcs < 1 || ld->config.max_concurrent_htlcs > 483)
fatal("--max-concurrent-htlcs value must be between 1 and 483 it is: %u",
ld->config.max_concurrent_htlcs);
if (ld->config.anchor_confirms == 0)
fatal("anchor-confirms must be greater than zero");
if (ld->always_use_proxy && !ld->proxyaddr)
fatal("--always-use-proxy needs --proxy");
if (ld->daemon_parent_fd != -1 && !ld->logfiles)
fatal("--daemon needs --log-file");
}
static char *test_subdaemons_and_exit(struct lightningd *ld)
{
test_subdaemons(ld);
exit(0);
return NULL;
}
static char *list_features_and_exit(struct lightningd *ld)
{
const char **features = list_supported_features(tmpctx, ld->our_features);
for (size_t i = 0; i < tal_count(features); i++)
printf("%s\n", features[i]);
#if EXPERIMENTAL_FEATURES
printf("supports_open_accept_channel_type\n");
#endif
exit(0);
}
static char *opt_lightningd_usage(struct lightningd *ld)
{
char *extra = tal_fmt(NULL, "\nA bitcoin lightning daemon (default "
"values shown for network: %s).", chainparams->network_name);
opt_usage_and_exit(extra);
tal_free(extra);
return NULL;
}
static char *opt_start_daemon(struct lightningd *ld)
{
int fds[2];
int exitcode, pid;
/* Already a daemon? OK. */
if (ld->daemon_parent_fd != -1)
return NULL;
if (pipe(fds) != 0)
err(1, "Creating pipe to talk to --daemon");
pid = fork();
if (pid == -1)
err(1, "Fork failed for --daemon");
if (pid == 0) {
/* Child returns, continues as normal. */
close(fds[0]);
ld->daemon_parent_fd = fds[1];
return NULL;
}
/* OK, we are the parent. We exit with status told to us by
* child. */
close(fds[1]);
if (read(fds[0], &exitcode, sizeof(exitcode)) == sizeof(exitcode))
_exit(exitcode);
/* It died before writing exitcode (presumably 0), so we grab it */
waitpid(pid, &exitcode, 0);
if (WIFEXITED(exitcode))
_exit(WEXITSTATUS(exitcode));
errx(1, "Died with signal %u", WTERMSIG(exitcode));
}
static char *opt_set_msat(const char *arg, struct amount_msat *amt)
{
if (!parse_amount_msat(amt, arg, strlen(arg)))
return tal_fmt(NULL, "Unable to parse millisatoshi '%s'", arg);
return NULL;
}
static char *opt_set_wumbo(struct lightningd *ld)
{
feature_set_or(ld->our_features,
take(feature_set_for_feature(NULL,
OPTIONAL_FEATURE(OPT_LARGE_CHANNELS))));
return NULL;
}
static char *opt_set_websocket_port(const char *arg, struct lightningd *ld)
{
u32 port COMPILER_WANTS_INIT("9.3.0 -O2");
char *err;
err = opt_set_u32(arg, &port);
if (err)
return err;
ld->websocket_port = port;
if (ld->websocket_port != port)
return tal_fmt(NULL, "'%s' is out of range", arg);
return NULL;
}
static char *opt_set_dual_fund(struct lightningd *ld)
{
/* Dual funding implies anchor outputs */
feature_set_or(ld->our_features,
take(feature_set_for_feature(NULL,
OPTIONAL_FEATURE(OPT_ANCHOR_OUTPUTS))));
feature_set_or(ld->our_features,
take(feature_set_for_feature(NULL,
OPTIONAL_FEATURE(OPT_DUAL_FUND))));
return NULL;
}
static char *opt_set_onion_messages(struct lightningd *ld)
{
feature_set_or(ld->our_features,
take(feature_set_for_feature(NULL,
OPTIONAL_FEATURE(OPT_ONION_MESSAGES))));
return NULL;
}
static char *opt_set_shutdown_wrong_funding(struct lightningd *ld)
{
feature_set_or(ld->our_features,
take(feature_set_for_feature(NULL,
OPTIONAL_FEATURE(OPT_SHUTDOWN_WRONG_FUNDING))));
return NULL;
}
static char *opt_set_offers(struct lightningd *ld)
{
ld->config.exp_offers = true;
return opt_set_onion_messages(ld);
}
static void register_opts(struct lightningd *ld)
{
/* This happens before plugins started */
opt_register_early_noarg("--test-daemons-only",
test_subdaemons_and_exit,
ld, opt_hidden);
/* Register plugins as an early args, so we can initialize them and have
* them register more command line options */
opt_register_early_arg("--plugin", opt_add_plugin, NULL, ld,
"Add a plugin to be run (can be used multiple times)");
opt_register_early_arg("--plugin-dir", opt_add_plugin_dir,
NULL, ld,
"Add a directory to load plugins from (can be used multiple times)");
opt_register_early_noarg("--clear-plugins", opt_clear_plugins,
ld,
"Remove all plugins added before this option");
opt_register_early_arg("--disable-plugin", opt_disable_plugin,
NULL, ld,
"Disable a particular plugin by filename/name");
opt_register_early_arg("--important-plugin", opt_important_plugin,
NULL, ld,
"Add an important plugin to be run (can be used multiple times). Die if the plugin dies.");
/* Early, as it suppresses DNS lookups from cmdline too. */
opt_register_early_arg("--always-use-proxy",
opt_set_bool_arg, opt_show_bool,
&ld->always_use_proxy, "Use the proxy always");
/* This immediately makes is a daemon. */
opt_register_early_noarg("--daemon", opt_start_daemon, ld,
"Run in the background, suppress stdout/stderr");
opt_register_early_arg("--wallet", opt_set_talstr, NULL,
&ld->wallet_dsn,
"Location of the wallet database.");
/* This affects our features, so set early. */
opt_register_early_noarg("--large-channels|--wumbo",
opt_set_wumbo, ld,
"Allow channels larger than 0.16777215 BTC");
opt_register_early_noarg("--experimental-dual-fund",
opt_set_dual_fund, ld,
"experimental: Advertise dual-funding"
" and allow peers to establish channels"
" via v2 channel open protocol.");
/* This affects our features, so set early. */
opt_register_early_noarg("--experimental-onion-messages",
opt_set_onion_messages, ld,
"EXPERIMENTAL: enable send, receive and relay"
" of onion messages");
opt_register_early_noarg("--experimental-offers",
opt_set_offers, ld,
"EXPERIMENTAL: enable send and receive of offers"
" (also sets experimental-onion-messages)");
opt_register_early_noarg("--experimental-shutdown-wrong-funding",
opt_set_shutdown_wrong_funding, ld,
"EXPERIMENTAL: allow shutdown with alternate txids");
opt_register_noarg("--help|-h", opt_lightningd_usage, ld,
"Print this message.");
opt_register_arg("--rgb", opt_set_rgb, NULL, ld,
"RRGGBB hex color for node");
opt_register_arg("--alias", opt_set_alias, NULL, ld,
"Up to 32-byte alias for node");
opt_register_arg("--pid-file=<file>", opt_set_talstr, opt_show_charp,
&ld->pidfile,
"Specify pid file");
opt_register_arg("--ignore-fee-limits", opt_set_bool_arg, opt_show_bool,
&ld->config.ignore_fee_limits,
"(DANGEROUS) allow peer to set any feerate");
opt_register_arg("--watchtime-blocks", opt_set_u32, opt_show_u32,
&ld->config.locktime_blocks,
"Blocks before peer can unilaterally spend funds");
opt_register_arg("--max-locktime-blocks", opt_set_u32, opt_show_u32,
&ld->config.locktime_max,
"Maximum blocks funds may be locked for");
opt_register_arg("--funding-confirms", opt_set_u32, opt_show_u32,
&ld->config.anchor_confirms,
"Confirmations required for funding transaction");
opt_register_arg("--cltv-delta", opt_set_u32, opt_show_u32,
&ld->config.cltv_expiry_delta,
"Number of blocks for cltv_expiry_delta");
opt_register_arg("--cltv-final", opt_set_u32, opt_show_u32,
&ld->config.cltv_final,
"Number of blocks for final cltv_expiry");
opt_register_arg("--commit-time=<millseconds>",
opt_set_u32, opt_show_u32,
&ld->config.commit_time_ms,
"Time after changes before sending out COMMIT");
opt_register_arg("--fee-base", opt_set_u32, opt_show_u32,
&ld->config.fee_base,
"Millisatoshi minimum to charge for HTLC");
opt_register_arg("--rescan", opt_set_s32, opt_show_s32,
&ld->config.rescan,
"Number of blocks to rescan from the current head, or "
"absolute blockheight if negative");
opt_register_arg("--fee-per-satoshi", opt_set_u32, opt_show_u32,
&ld->config.fee_per_satoshi,
"Microsatoshi fee for every satoshi in HTLC");
opt_register_arg("--htlc-minimum-msat", opt_set_msat, NULL,
&ld->config.htlc_minimum_msat,
"The default minimal value an HTLC must carry in order to be forwardable for new channels");
opt_register_arg("--htlc-maximum-msat", opt_set_msat, NULL,
&ld->config.htlc_maximum_msat,
"The default maximal value an HTLC must carry in order to be forwardable for new channel");
opt_register_arg("--max-concurrent-htlcs", opt_set_u32, opt_show_u32,
&ld->config.max_concurrent_htlcs,
"Number of HTLCs one channel can handle concurrently. Should be between 1 and 483");
opt_register_arg("--max-dust-htlc-exposure-msat", opt_set_msat,
NULL, &ld->config.max_dust_htlc_exposure_msat,
"Max HTLC amount that can be trimmed");
opt_register_arg("--min-capacity-sat", opt_set_u64, opt_show_u64,
&ld->config.min_capacity_sat,
"Minimum capacity in satoshis for accepting channels");
opt_register_arg("--addr", opt_add_addr, NULL,
ld,
"Set an IP address (v4 or v6) to listen on and announce to the network for incoming connections");
opt_register_arg("--bind-addr", opt_add_bind_addr, NULL,
ld,
"Set an IP address (v4 or v6) to listen on, but not announce");
opt_register_arg("--announce-addr", opt_add_announce_addr, NULL,
ld,
"Set an IP address (v4 or v6) or .onion v3 to announce, but not listen on");
opt_register_noarg("--disable-ip-discovery", opt_set_bool,
&ld->config.disable_ip_discovery,
"Turn off announcement of discovered public IPs");
opt_register_noarg("--offline", opt_set_offline, ld,
"Start in offline-mode (do not automatically reconnect and do not accept incoming connections)");
opt_register_arg("--autolisten", opt_set_bool_arg, opt_show_bool,
&ld->autolisten,
"If true, listen on default port and announce if it seems to be a public interface");
opt_register_arg("--proxy", opt_add_proxy_addr, NULL,
ld,"Set a socks v5 proxy IP address and port");
opt_register_arg("--tor-service-password", opt_set_talstr, NULL,
&ld->tor_service_password,
"Set a Tor hidden service password");
#if EXPERIMENTAL_FEATURES
opt_register_arg("--experimental-accept-extra-tlv-types",
opt_set_accept_extra_tlv_types, NULL, ld,
"Comma separated list of extra TLV types to accept.");
#endif
opt_register_early_noarg("--disable-dns", opt_set_invbool, &ld->config.use_dns,
"Disable DNS lookups of peers");
opt_register_noarg("--encrypted-hsm", opt_set_hsm_password, ld,
"Set the password to encrypt hsm_secret with. If no password is passed through command line, "
"you will be prompted to enter it.");
opt_register_arg("--rpc-file-mode", &opt_set_mode, &opt_show_mode,
&ld->rpc_filemode,
"Set the file mode (permissions) for the "
"JSON-RPC socket");
opt_register_arg("--force-feerates",
opt_force_feerates, NULL, ld,
"Set testnet/regtest feerates in sats perkw, opening/mutual_close/unlateral_close/delayed_to_us/htlc_resolution/penalty: if fewer specified, last number applies to remainder");
opt_register_arg("--subdaemon", opt_subdaemon, NULL,
ld, "Arg specified as SUBDAEMON:PATH. "
"Specifies an alternate subdaemon binary. "
"If the supplied path is relative the subdaemon "
"binary is found in the working directory. "
"This option may be specified multiple times. "
"For example, "
"--subdaemon=hsmd:remote_signer "
"would use a hypothetical remote signing subdaemon.");
opt_register_arg("--experimental-websocket-port",
opt_set_websocket_port, NULL,
ld,
"experimental: alternate port for peers to connect"
" using WebSockets (RFC6455)");
opt_register_logging(ld);
opt_register_version();
#if DEVELOPER
dev_register_opts(ld);
#endif
}
/* We are in ld->config_netdir when this is run! */
static void promote_missing_files(struct lightningd *ld)
{
#ifdef COMPAT_V073
DIR *d_from;
struct dirent *d;
struct stat st;
/* If hsm_secret already exists, we assume we're ugpraded */
if (stat("hsm_secret", &st) == 0)
return;
if (errno != ENOENT)
err(1, "Looking for hsm_secret in lightning dir");
/* If hsm doesn't exist in basedir, we've nothing to upgrade. */
if (stat(path_join(tmpctx, ld->config_basedir, "hsm_secret"), &st) != 0)
return;
d_from = opendir(ld->config_basedir);
if (!d_from)
err(1, "Opening %s", ld->config_basedir);
while ((d = readdir(d_from)) != NULL) {
const char *fullname;
/* Ignore this directory and upper one, and leave
* config and pid files */
if (streq(d->d_name, ".")
|| streq(d->d_name, "..")
|| streq(d->d_name, "config")
|| strends(d->d_name, ".pid"))
continue;
fullname = path_join(tmpctx, ld->config_basedir, d->d_name);
/* Simply remove rpc file: if they use --rpc-file to place it
* here explicitly it will get recreated, but moving it would
* be confusing as it would be unused. */
if (streq(d->d_name, "lightning-rpc")) {
if (unlink(fullname) != 0)
log_unusual(ld->log, "Could not unlink %s: %s",
fullname, strerror(errno));
continue;
}
/* Ignore any directories. */
if (lstat(fullname, &st) != 0)
errx(1, "Could not stat %s", fullname);
if ((st.st_mode & S_IFMT) == S_IFDIR)
continue;
/* Check we don't overwrite something in this dir! */
if (lstat(d->d_name, &st) != -1)
errx(1, "Refusing to overwrite %s into %s/",
fullname, ld->config_netdir);
log_unusual(ld->log, "Moving %s into %s/",
d->d_name, ld->config_netdir);
if (rename(fullname, d->d_name) != 0)
err(1, "Could not move %s/%s to %s",
ld->config_basedir, d->d_name, ld->config_netdir);
}
closedir(d_from);
#endif /* COMPAT_V073 */
}
/* Names stolen from https://github.com/ternus/nsaproductgenerator/blob/master/nsa.js */
static const char *codename_adjective[]
= { "LOUD", "RED", "BLUE", "GREEN", "YELLOW", "IRATE", "ANGRY", "PEEVED",
"HAPPY", "SLIMY", "SLEEPY", "JUNIOR", "SLICKER", "UNITED", "SOMBER",
"BIZARRE", "ODD", "WEIRD", "WRONG", "LATENT", "CHILLY", "STRANGE", "LOUD",
"SILENT", "HOPPING", "ORANGE", "VIOLET", "VIOLENT", "LIGHTNING" };
static const char *codename_noun[]
= { "WHISPER", "FELONY", "MOON", "SUCKER", "PENGUIN", "WAFFLE", "MAESTRO",
"NIGHT", "TRINITY", "DEITY", "MONKEY", "ARK", "SQUIRREL", "IRON", "BOUNCE",
"FARM", "CHEF", "TROUGH", "NET", "TRAWL", "GLEE", "WATER", "SPORK", "PLOW",
"FEED", "SOUFFLE", "ROUTE", "BAGEL", "MONTANA", "ANALYST", "AUTO", "WATCH",
"PHOTO", "YARD", "SOURCE", "MONKEY", "SEAGULL", "TOLL", "SPAWN", "GOPHER",
"CHIPMUNK", "SET", "CALENDAR", "ARTIST", "CHASER", "SCAN", "TOTE", "BEAM",
"ENTOURAGE", "GENESIS", "WALK", "SPATULA", "RAGE", "FIRE", "MASTER" };
void setup_color_and_alias(struct lightningd *ld)
{
if (!ld->rgb)
/* You can't get much red by default */
ld->rgb = tal_dup_arr(ld, u8, ld->id.k, 3, 0);
if (!ld->alias) {
u64 adjective, noun;
char *name;
memcpy(&adjective, ld->id.k+3, sizeof(adjective));
memcpy(&noun, ld->id.k+3+sizeof(adjective), sizeof(noun));
noun %= ARRAY_SIZE(codename_noun);
adjective %= ARRAY_SIZE(codename_adjective);
/* Only use 32 characters */
name = tal_fmt(ld, "%s%s",
codename_adjective[adjective],
codename_noun[noun]);
#if DEVELOPER
assert(strlen(name) < 32);
int taillen = 31 - strlen(name);
if (taillen > strlen(version()))
taillen = strlen(version());
/* Fit as much of end of version() as possible */
tal_append_fmt(&name, "-%s",
version() + strlen(version()) - taillen);
#endif
assert(strlen(name) <= 32);
ld->alias = tal_arrz(ld, u8, 33);
strcpy((char*)ld->alias, name);
tal_free(name);
}
}
void handle_early_opts(struct lightningd *ld, int argc, char *argv[])
{
/* Make ccan/opt use tal for allocations */
setup_option_allocators();
/*~ List features immediately, before doing anything interesting */
opt_register_early_noarg("--list-features-only",
list_features_and_exit,
ld, opt_hidden);
/*~ This does enough parsing to get us the base configuration options */
initial_config_opts(ld, argc, argv,
&ld->config_filename,
&ld->config_basedir,
&ld->config_netdir,
&ld->rpc_filename);
/* Copy in default config, to be modified by further options */
if (chainparams->testnet)
ld->config = testnet_config;
else
ld->config = mainnet_config;
/* Now we can initialize wallet_dsn */
ld->wallet_dsn = tal_fmt(ld, "sqlite3://%s/lightningd.sqlite3",
ld->config_netdir);
/* Set default PID file name to be per-network (in base dir) */
ld->pidfile = path_join(ld, ld->config_basedir,
tal_fmt(tmpctx, "lightningd-%s.pid",
chainparams->network_name));
/*~ Move into config dir: this eases path manipulation and also
* gives plugins a good place to store their stuff. */
if (chdir(ld->config_netdir) != 0) {
log_info(ld->log, "Creating configuration directory %s",
ld->config_netdir);
/* We assume home dir exists, so only create two. */
if (mkdir(ld->config_basedir, 0700) != 0 && errno != EEXIST)
fatal("Could not make directory %s: %s",
ld->config_basedir,
strerror(errno));
if (mkdir(ld->config_netdir, 0700) != 0)
fatal("Could not make directory %s: %s",
ld->config_netdir, strerror(errno));
if (chdir(ld->config_netdir) != 0)
fatal("Could not change directory %s: %s",
ld->config_netdir, strerror(errno));
}
/*~ We move files from old locations on first upgrade. */
promote_missing_files(ld);
/*~ The ccan/opt code requires registration then parsing; we
* mimic this API here, even though they're on separate lines.*/
register_opts(ld);
/* Now look inside config file(s), but only handle the early
* options (testnet, plugins etc), others may be added on-demand */
parse_config_files(ld->config_filename, ld->config_basedir, true);
/* Early cmdline options now override config file options. */
opt_early_parse_incomplete(argc, argv, opt_log_stderr_exit);
/* Finalize the logging subsystem now. */
logging_options_parsed(ld->log_book);
}
void handle_opts(struct lightningd *ld, int argc, char *argv[])
{
/* Now look for config file, but only handle non-early
* options, early ones have been parsed in
* handle_early_opts */
parse_config_files(ld->config_filename, ld->config_basedir, false);
/* Now parse cmdline, which overrides config. */
opt_parse(&argc, argv, opt_log_stderr_exitcode);
if (argc != 1)
errx(1, "no arguments accepted");
/* We keep a separate variable rather than overriding always_use_proxy,
* so listconfigs shows the correct thing. */
if (tal_count(ld->proposed_wireaddr) != 0
&& all_tor_addresses(ld->proposed_wireaddr)) {
ld->pure_tor_setup = true;
if (!ld->proxyaddr)
log_info(ld->log, "Pure Tor setup with no --proxy:"
" you won't be able to make connections out");
}
check_config(ld);
}
/* FIXME: This is a hack! Expose somehow in ccan/opt.*/
/* Returns string after first '-'. */
static const char *first_name(const char *names, unsigned *len)
{
*len = strcspn(names + 1, "|= ");
return names + 1;
}
static const char *next_name(const char *names, unsigned *len)
{
names += *len;
if (names[0] == ' ' || names[0] == '=' || names[0] == '\0')
return NULL;
return first_name(names + 1, len);
}
static void json_add_opt_addrs(struct json_stream *response,
const char *name0,
const struct wireaddr_internal *wireaddrs,
const enum addr_listen_announce *listen_announce,
enum addr_listen_announce ala)
{
for (size_t i = 0; i < tal_count(wireaddrs); i++) {
if (listen_announce[i] != ala)
continue;
json_add_string(response,
name0,
fmt_wireaddr_internal(name0, wireaddrs+i));
}
}
static void json_add_opt_log_to_files(struct json_stream *response,
const char *name0,
const char **logfiles)
{
for (size_t i = 0; i < tal_count(logfiles); i++)
json_add_string(response, name0, logfiles[i]);
}
struct json_add_opt_alt_subdaemon_args {
const char *name0;
struct json_stream *response;
};
static bool json_add_opt_alt_subdaemon(const char *member,
const char *value,
struct json_add_opt_alt_subdaemon_args *argp)
{
json_add_string(argp->response,
argp->name0,
tal_fmt(argp->name0, "%s:%s", member, value));
return true;
}
static void json_add_opt_subdaemons(struct json_stream *response,
const char *name0,
alt_subdaemon_map *alt_subdaemons)
{
struct json_add_opt_alt_subdaemon_args args;
args.name0 = name0;
args.response = response;
strmap_iterate(alt_subdaemons, json_add_opt_alt_subdaemon, &args);
}
static void add_config(struct lightningd *ld,
struct json_stream *response,
const struct opt_table *opt,
const char *name, size_t len)
{
char *name0 = tal_strndup(tmpctx, name, len);
const char *answer = NULL;
char buf[OPT_SHOW_LEN + sizeof("...")];
#if DEVELOPER
if (strstarts(name0, "dev-")) {
/* Ignore dev settings */
return;
}
#endif
if (opt->type & OPT_NOARG) {
if (opt->desc == opt_hidden) {
/* Ignore hidden options (deprecated) */
} else if (opt->cb == (void *)opt_usage_and_exit
|| opt->cb == (void *)version_and_exit
|| is_restricted_ignored(opt->cb)
|| opt->cb == (void *)opt_lightningd_usage
|| opt->cb == (void *)test_subdaemons_and_exit
/* FIXME: we can't recover this. */
|| opt->cb == (void *)opt_clear_plugins) {
/* These are not important */
} else if (opt->cb == (void *)opt_set_bool) {
const bool *b = opt->u.carg;
json_add_bool(response, name0, *b);
} else if (opt->cb == (void *)opt_set_invbool) {
const bool *b = opt->u.carg;
json_add_bool(response, name0, !*b);
} else if (opt->cb == (void *)opt_set_offline) {
json_add_bool(response, name0,
!ld->reconnect && !ld->listen);
} else if (opt->cb == (void *)opt_start_daemon) {
json_add_bool(response, name0,
ld->daemon_parent_fd != -1);
} else if (opt->cb == (void *)opt_set_hsm_password) {
json_add_bool(response, "encrypted-hsm", ld->encrypted_hsm);
} else if (opt->cb == (void *)opt_set_wumbo) {
json_add_bool(response, name0,
feature_offered(ld->our_features
->bits[INIT_FEATURE],
OPT_LARGE_CHANNELS));
} else if (opt->cb == (void *)opt_set_dual_fund) {
json_add_bool(response, name0,
feature_offered(ld->our_features
->bits[INIT_FEATURE],
OPT_DUAL_FUND));
} else if (opt->cb == (void *)opt_set_onion_messages) {
json_add_bool(response, name0,
feature_offered(ld->our_features
->bits[INIT_FEATURE],
OPT_ONION_MESSAGES));
} else if (opt->cb == (void *)opt_set_offers) {
json_add_bool(response, name0, ld->config.exp_offers);
} else if (opt->cb == (void *)opt_set_shutdown_wrong_funding) {
json_add_bool(response, name0,
feature_offered(ld->our_features
->bits[INIT_FEATURE],
OPT_SHUTDOWN_WRONG_FUNDING));
} else if (opt->cb == (void *)plugin_opt_flag_set) {
/* Noop, they will get added below along with the
* OPT_HASARG options. */
} else {
/* Insert more decodes here! */
assert(!"A noarg option was added but was not handled");
}
} else if (opt->type & OPT_HASARG) {
if (opt->desc == opt_hidden) {
/* Ignore hidden options (deprecated) */
} else if (opt->show) {
opt->show(buf, opt->u.carg);
strcpy(buf + OPT_SHOW_LEN - 1, "...");
if (streq(buf, "true") || streq(buf, "false")
|| (!streq(buf, "") && strspn(buf, "0123456789.") == strlen(buf))) {
/* Let pure numbers and true/false through as
* literals. */
json_add_primitive(response, name0, buf);
return;
}
/* opt_show_charp surrounds with "", strip them */
if (strstarts(buf, "\"")) {
char *end = strrchr(buf, '"');
memmove(end, end + 1, strlen(end));
answer = buf + 1;
} else
answer = buf;
} else if (opt->cb_arg == (void *)opt_set_talstr
|| opt->cb_arg == (void *)opt_set_charp
|| is_restricted_print_if_nonnull(opt->cb_arg)) {
const char *arg = *(char **)opt->u.carg;
if (arg)
answer = tal_fmt(name0, "%s", arg);
} else if (opt->cb_arg == (void *)opt_set_rgb) {
if (ld->rgb)
answer = tal_hexstr(name0, ld->rgb, 3);
} else if (opt->cb_arg == (void *)opt_set_alias) {
answer = (const char *)ld->alias;
} else if (opt->cb_arg == (void *)arg_log_to_file) {
if (ld->logfiles)
json_add_opt_log_to_files(response, name0, ld->logfiles);
} else if (opt->cb_arg == (void *)opt_add_addr) {
json_add_opt_addrs(response, name0,
ld->proposed_wireaddr,
ld->proposed_listen_announce,
ADDR_LISTEN_AND_ANNOUNCE);
return;
} else if (opt->cb_arg == (void *)opt_add_bind_addr) {
json_add_opt_addrs(response, name0,
ld->proposed_wireaddr,
ld->proposed_listen_announce,
ADDR_LISTEN);
return;
} else if (opt->cb_arg == (void *)opt_add_announce_addr) {
json_add_opt_addrs(response, name0,
ld->proposed_wireaddr,
ld->proposed_listen_announce,
ADDR_ANNOUNCE);
return;
} else if (opt->cb_arg == (void *)opt_subdaemon) {
json_add_opt_subdaemons(response, name0,
&ld->alt_subdaemons);
return;
} else if (opt->cb_arg == (void *)opt_add_proxy_addr) {
if (ld->proxyaddr)
answer = fmt_wireaddr(name0, ld->proxyaddr);
} else if (opt->cb_arg == (void *)opt_add_plugin) {
json_add_opt_plugins(response, ld->plugins);
} else if (opt->cb_arg == (void *)opt_log_level) {
json_add_opt_log_levels(response, ld->log);
} else if (opt->cb_arg == (void *)opt_disable_plugin) {
json_add_opt_disable_plugins(response, ld->plugins);
} else if (opt->cb_arg == (void *)opt_force_feerates) {
answer = fmt_force_feerates(name0, ld->force_feerates);
} else if (opt->cb_arg == (void *)opt_set_websocket_port) {
if (ld->websocket_port)
json_add_u32(response, name0,
ld->websocket_port);
return;
} else if (opt->cb_arg == (void *)opt_important_plugin) {
/* Do nothing, this is already handled by
* opt_add_plugin. */
} else if (opt->cb_arg == (void *)opt_add_plugin_dir
|| opt->cb_arg == (void *)plugin_opt_set
|| opt->cb_arg == (void *)plugin_opt_flag_set) {
/* FIXME: We actually treat it as if they specified
* --plugin for each one, so ignore these */
} else if (opt->cb_arg == (void *)opt_set_msat) {
/* We allow -msat not _msat here, unlike
* json_add_amount_msat_only */
assert(strends(name0, "-msat"));
json_add_string(response, name0,
fmt_amount_msat(tmpctx,
*(struct amount_msat *)
opt->u.carg));
#if EXPERIMENTAL_FEATURES
} else if (opt->cb_arg == (void *)opt_set_accept_extra_tlv_types) {
/* TODO Actually print the option */
#endif
#if DEVELOPER
} else if (strstarts(name, "dev-")) {
/* Ignore dev settings */
#endif
} else {
/* Insert more decodes here! */
abort();
}
}
if (answer) {
struct json_escape *esc = json_escape(NULL, answer);
json_add_escaped_string(response, name0, take(esc));
}
}
static struct command_result *json_listconfigs(struct command *cmd,
const char *buffer,
const jsmntok_t *obj UNNEEDED,
const jsmntok_t *params)
{
size_t i;
struct json_stream *response = NULL;
const char *configname;
if (!param(cmd, buffer, params,
p_opt("config", param_string, &configname),
NULL))
return command_param_failed();
if (!configname) {
response = json_stream_success(cmd);
json_add_string(response, "# version", version());
}
for (i = 0; i < opt_count; i++) {
unsigned int len;
const char *name;
/* FIXME: Print out comment somehow? */
if (opt_table[i].type == OPT_SUBTABLE)
continue;
for (name = first_name(opt_table[i].names, &len);
name;
name = next_name(name, &len)) {
/* Skips over first -, so just need to look for one */
if (name[0] != '-')
continue;
if (configname
&& !memeq(configname, strlen(configname),
name + 1, len - 1))
continue;
if (!response)
response = json_stream_success(cmd);
add_config(cmd->ld, response, &opt_table[i],
name+1, len-1);
/* If we have more than one long name, first
* is preferred */
break;
}
}
if (configname && !response) {
return command_fail(cmd, JSONRPC2_INVALID_PARAMS,
"Unknown config option %s",
configname);
}
return command_success(cmd, response);
}
static const struct json_command listconfigs_command = {
"listconfigs",
"utility",
json_listconfigs,
"List all configuration options, or with [config], just that one.",
.verbose = "listconfigs [config]\n"
"Outputs an object, with each field a config options\n"
"(Option names which start with # are comments)\n"
"With [config], object only has that field"
};
AUTODATA(json_command, &listconfigs_command);
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