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core-lightning/lightningd/options.c
niftynei 7bbfef5054 tests: flake fix; l1 was waiting too long to reconnect 
We were waiting too long for the reconnect to happen (60s default),
which caused this test to timeout.

When testing, let's speed up the reconnect.

L2 tried to reconnect but didn't have connection information in its
gossip -- is there a way to ask/save connection data from a node you're
making a channel with that doesn't rely on their node_announcement?
2022-07-25 16:28:09 +09:30

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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;
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 default reconnect delay 3 (not 60) 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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