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lightning/lightningd/options.c

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#include <bitcoin/chainparams.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/read_write_all/read_write_all.h>
#include <ccan/short_types/short_types.h>
#include <ccan/tal/grab_file/grab_file.h>
#include <ccan/tal/path/path.h>
#include <ccan/tal/str/str.h>
#include <common/configdir.h>
#include <common/json_command.h>
#include <common/jsonrpc_errors.h>
#include <common/memleak.h>
#include <common/param.h>
#include <common/version.h>
#include <common/wireaddr.h>
#include <errno.h>
#include <fcntl.h>
#include <inttypes.h>
#include <lightningd/bitcoind.h>
#include <lightningd/chaintopology.h>
#include <lightningd/json.h>
#include <lightningd/jsonrpc.h>
#include <lightningd/lightningd.h>
#include <lightningd/log.h>
#include <lightningd/options.h>
#include <lightningd/plugin.h>
#include <lightningd/subd.h>
#include <stdio.h>
#include <string.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>
#include <wire/wire.h>
bool deprecated_apis = true;
/* Tal wrappers for opt. */
static void *opt_allocfn(size_t size)
{
return tal_arr_label(NULL, char, size, TAL_LABEL("opt_allocfn", ""));
}
static void *tal_reallocfn(void *ptr, size_t size)
{
if (!ptr) {
/* realloc(NULL) call is to allocate opt_table */
static bool opt_table_alloced = false;
if (!opt_table_alloced) {
opt_table_alloced = true;
return notleak(opt_allocfn(size));
}
return opt_allocfn(size);
}
tal_resize_(&ptr, 1, size, false);
return ptr;
}
static void tal_freefn(void *ptr)
{
tal_free(ptr);
}
/* 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_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;
assert(arg != NULL);
tal_arr_expand(&ld->proposed_listen_announce, ala);
if (!parse_wireaddr_internal(arg, &wi,
ld->portnum,
wildcard_ok, !ld->use_proxy_always, false,
&err_msg)) {
return tal_fmt(NULL, "Unable to parse address '%s': %s", arg, err_msg);
}
tal_arr_expand(&ld->proposed_wireaddr, wi);
return NULL;
}
static char *opt_add_addr(const char *arg, struct lightningd *ld)
{
return opt_add_addr_withtype(arg, ld, ADDR_LISTEN_AND_ANNOUNCE, true);
}
static char *opt_add_bind_addr(const char *arg, struct lightningd *ld)
{
return opt_add_addr_withtype(arg, ld, ADDR_LISTEN, true);
}
static char *opt_add_announce_addr(const char *arg, struct lightningd *ld)
{
const struct wireaddr *wn;
size_t n = tal_count(ld->proposed_wireaddr);
char *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 announcable",
arg);
/* gossipd will refuse to announce the second one, sure, but it's
* better to check and fail now if they've explicitly asked for it. */
wn = &ld->proposed_wireaddr[n].u.wireaddr;
for (size_t i = 0; i < n; i++) {
const struct wireaddr *wi;
if (ld->proposed_listen_announce[i] != ADDR_ANNOUNCE)
continue;
assert(ld->proposed_wireaddr[i].itype == ADDR_INTERNAL_WIREADDR);
wi = &ld->proposed_wireaddr[i].u.wireaddr;
if (wn->type != wi->type)
continue;
return tal_fmt(NULL, "Cannot announce address %s;"
" already have %s which is the same type",
type_to_string(tmpctx, struct wireaddr, wn),
type_to_string(tmpctx, struct wireaddr, wi));
}
return NULL;
}
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 char *opt_set_network(const char *arg, struct lightningd *ld)
{
assert(arg != NULL);
ld->topology->bitcoind->chainparams = chainparams_for_network(arg);
if (!ld->topology->bitcoind->chainparams)
return tal_fmt(NULL, "Unknown network name '%s'", arg);
return NULL;
}
static char *opt_set_testnet(struct lightningd *ld)
{
return opt_set_network("testnet", ld);
}
static char *opt_set_mainnet(struct lightningd *ld)
{
return opt_set_network("bitcoin", ld);
}
static void opt_show_network(char buf[OPT_SHOW_LEN],
const struct lightningd *ld)
{
snprintf(buf, OPT_SHOW_LEN, "%s", get_chainparams(ld)->network_name);
}
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`:`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->use_proxy_always ? &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)
{
plugin_register(ld->plugins, arg);
return NULL;
}
static char *opt_disable_plugin(const char *arg, struct lightningd *ld)
{
if (plugin_remove(ld->plugins, arg))
return NULL;
return tal_fmt(NULL, "Could not find plugin %s", arg);
}
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 void config_register_opts(struct lightningd *ld)
{
opt_register_early_arg("--conf=<file>", opt_set_talstr, NULL,
&ld->config_filename,
"Specify configuration file. Relative paths will be prefixed by lightning-dir location. (default: config)");
/* 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_noarg("--daemon", opt_set_bool, &ld->daemon,
"Run in the background, suppress stdout/stderr");
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("--commit-fee-min=<percent>", opt_set_u32, opt_show_u32,
&ld->config.commitment_fee_min_percent,
"Minimum percentage of fee to accept for commitment");
opt_register_arg("--commit-fee-max=<percent>", opt_set_u32, opt_show_u32,
&ld->config.commitment_fee_max_percent,
"Maximum percentage of fee to accept for commitment (0 for unlimited)");
opt_register_arg("--commit-fee=<percent>", opt_set_u32, opt_show_u32,
&ld->config.commitment_fee_percent,
"Percentage of fee to request for their commitment");
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("--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 v2/v3 to announce, but not listen on");
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_early_arg("--network", opt_set_network, opt_show_network,
ld,
"Select the network parameters (bitcoin, testnet,"
" regtest, litecoin or litecoin-testnet)");
opt_register_early_noarg("--testnet", opt_set_testnet, ld,
"Alias for --network=testnet");
opt_register_early_noarg("--mainnet", opt_set_mainnet, ld,
"Alias for --network=bitcoin");
opt_register_early_arg("--allow-deprecated-apis",
opt_set_bool_arg, opt_show_bool,
&deprecated_apis,
"Enable deprecated options, JSONRPC commands, fields, etc.");
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");
/* Early, as it suppresses DNS lookups from cmdline too. */
opt_register_early_arg("--always-use-proxy",
opt_set_bool_arg, opt_show_bool,
&ld->use_proxy_always, "Use the proxy always");
opt_register_noarg("--disable-dns", opt_set_invbool, &ld->config.use_dns,
"Disable DNS lookups of peers");
#if DEVELOPER
opt_register_arg("--dev-max-funding-unconfirmed-blocks",
opt_set_u32, opt_show_u32,
&ld->max_funding_unconfirmed,
"Maximum number of blocks we wait for a channel "
"funding transaction to confirm, if we are the "
"fundee.");
#endif
}
#if DEVELOPER
static char *opt_subprocess_debug(const char *optarg, struct lightningd *ld)
{
ld->dev_debug_subprocess = optarg;
return NULL;
}
static void dev_register_opts(struct lightningd *ld)
{
opt_register_noarg("--dev-no-reconnect", opt_set_invbool,
&ld->reconnect,
"Disable automatic reconnect attempts");
opt_register_noarg("--dev-fail-on-subdaemon-fail", opt_set_bool,
&ld->dev_subdaemon_fail, opt_hidden);
opt_register_early_arg("--dev-debugger=<subprocess>", opt_subprocess_debug, NULL,
ld, "Invoke gdb at start of <subprocess>");
opt_register_arg("--dev-broadcast-interval=<ms>", opt_set_uintval,
opt_show_uintval, &ld->config.broadcast_interval_msec,
"Time between gossip broadcasts in milliseconds");
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_arg("--dev-max-fee-multiplier", opt_set_u32, opt_show_u32,
&ld->config.max_fee_multiplier,
"Allow the fee proposed by the remote end to be up to "
"multiplier times higher than our own. Small values "
"will cause channels to be closed more often due to "
"fee fluctuations, large values may result in large "
"fees.");
opt_register_arg(
"--dev-channel-update-interval=<s>", opt_set_u32, opt_show_u32,
&ld->config.channel_update_interval,
"Time in seconds between channel updates for our own channels.");
opt_register_arg("--dev-gossip-time", opt_set_u32, opt_show_u32,
&ld->dev_gossip_time,
"UNIX time to override gossipd to use.");
}
#endif
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 fees are crazy, allow infinite feerange. */
.commitment_fee_min_percent = 0,
.commitment_fee_max_percent = 0,
/* We offer to pay 5 times 2-block fee */
.commitment_fee_percent = 500,
/* 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,
/* BOLT #7:
*
* - SHOULD flush outgoing gossip messages once every 60
* seconds, independently of the arrival times of the messages.
*/
.broadcast_interval_msec = 60000,
/* Send a keepalive update at least every week, prune every twice that */
.channel_update_interval = 1209600/2,
/* Testnet sucks */
.ignore_fee_limits = true,
/* Rescan 5 hours of blocks on testnet, it's reorg happy */
.rescan = 30,
/* Fees may be in the range our_fee - 10*our_fee */
.max_fee_multiplier = 10,
.use_dns = true,
/* Sets min_effective_htlc_capacity - at 1000$/BTC this is 10ct */
.min_capacity_sat = 10000,
};
/* aka. "Dude, where's my coins?" */
static const struct config mainnet_config = {
/* ~one day to catch cheating attempts. */
.locktime_blocks = 6 * 24,
/* They can have up to 14 days, maximumu value that lnd will ask for by default. */
/* FIXME Convince lnd to use more reasonable defaults... */
.locktime_max = 14 * 24 * 6,
/* We're fairly trusting, under normal circumstances. */
.anchor_confirms = 3,
/* Insist between 2 and 20 times the 2-block fee. */
.commitment_fee_min_percent = 200,
.commitment_fee_max_percent = 2000,
/* We offer to pay 5 times 2-block fee */
.commitment_fee_percent = 500,
/* BOLT #2:
*
* 1. the `cltv_expiry_delta` for channels, `3R+2G+2S`: if in doubt, a
* `cltv_expiry_delta` of 12 is reasonable (R=2, G=1, S=2)
*/
/* R = 2, G = 1, S = 3 */
.cltv_expiry_delta = 14,
/* BOLT #2:
*
* 4. the minimum `cltv_expiry` accepted for terminal payments: the
* worst case for the terminal node C is `2R+G+S` blocks */
.cltv_final = 10,
/* Send commit 10msec after receiving; almost immediately. */
.commit_time_ms = 10,
/* Discourage dust payments */
.fee_base = 1000,
/* Take 0.001% */
.fee_per_satoshi = 10,
/* BOLT #7:
*
* - SHOULD flush outgoing gossip messages once every 60
* seconds, independently of the arrival times of the messages.
*/
.broadcast_interval_msec = 60000,
/* Send a keepalive update at least every week, prune every twice that */
.channel_update_interval = 1209600/2,
/* Mainnet should have more stable fees */
.ignore_fee_limits = false,
/* Rescan 2.5 hours of blocks on startup, it's not so reorg happy */
.rescan = 15,
/* Fees may be in the range our_fee - 10*our_fee */
.max_fee_multiplier = 10,
.use_dns = true,
/* Sets min_effective_htlc_capacity - at 1000$/BTC this is 10ct */
.min_capacity_sat = 10000,
};
static void check_config(struct lightningd *ld)
{
/* We do this by ensuring it's less than the minimum we would accept. */
if (ld->config.commitment_fee_max_percent != 0
&& ld->config.commitment_fee_max_percent
< ld->config.commitment_fee_min_percent)
fatal("Commitment fee invalid min-max %u-%u",
ld->config.commitment_fee_min_percent,
ld->config.commitment_fee_max_percent);
if (ld->config.anchor_confirms == 0)
fatal("anchor-confirms must be greater than zero");
if (ld->use_proxy_always && !ld->proxyaddr)
fatal("--always-use-proxy needs --proxy");
}
static void setup_default_config(struct lightningd *ld)
{
if (get_chainparams(ld)->testnet)
ld->config = testnet_config;
else
ld->config = mainnet_config;
/* Set default PID file name to be per-network */
tal_free(ld->pidfile);
ld->pidfile = tal_fmt(ld, "lightningd-%s.pid", get_chainparams(ld)->network_name);
}
/* FIXME: make this nicer! */
static int config_parse_line_number = 0;
static void config_log_stderr_exit(const char *fmt, ...)
{
char *msg;
va_list ap;
va_start(ap, fmt);
/* This is the format we expect:*/
if (streq(fmt, "%s: %.*s: %s")) {
const char *argv0 = va_arg(ap, const char *);
unsigned int len = va_arg(ap, unsigned int);
const char *arg = va_arg(ap, const char *);
const char *problem = va_arg(ap, const char *);
assert(argv0 != NULL);
assert(arg != NULL);
assert(problem != NULL);
/*mangle it to remove '--' and add the line number.*/
msg = tal_fmt(NULL, "%s line %d: %.*s: %s",
argv0, config_parse_line_number, len-2, arg+2, problem);
} else {
msg = tal_vfmt(NULL, fmt, ap);
}
va_end(ap);
fatal("%s", msg);
}
/**
* We turn the config file into cmdline arguments. @early tells us
* whether to parse early options only, or the non-early options.
*/
static void opt_parse_from_config(struct lightningd *ld, bool early)
{
char *contents, **lines;
char **all_args; /*For each line: either argument string or NULL*/
char *argv[3];
int i, argc;
char *filename;
if (ld->config_filename != NULL)
filename = ld->config_filename;
else
filename = path_join(tmpctx, ld->config_dir, "config");
contents = grab_file(ld, filename);
/* The default config doesn't have to exist, but if the config was
* specified on the command line it has to exist. */
if (!contents) {
if ((errno != ENOENT) || (ld->config_filename != NULL))
fatal("Opening and reading %s: %s",
filename, strerror(errno));
/* Now we can set up defaults, since no config file. */
setup_default_config(ld);
return;
}
lines = tal_strsplit(contents, contents, "\r\n", STR_NO_EMPTY);
/* We have to keep all_args around, since opt will point into it */
all_args = notleak(tal_arr(ld, char *, tal_count(lines) - 1));
for (i = 0; i < tal_count(lines) - 1; i++) {
if (strstarts(lines[i], "#")) {
all_args[i] = NULL;
}
else {
/* Only valid forms are "foo" and "foo=bar" */
all_args[i] = tal_fmt(all_args, "--%s", lines[i]);
}
}
/*
For each line we construct a fake argc,argv commandline.
argv[1] is the only element that changes between iterations.
*/
argc = 2;
argv[0] = "lightning config file";
argv[argc] = NULL;
if (early) {
for (i = 0; i < tal_count(all_args); i++) {
if (all_args[i] != NULL) {
config_parse_line_number = i + 1;
argv[1] = all_args[i];
opt_early_parse_incomplete(argc, argv,
config_log_stderr_exit);
}
}
/* Now we can set up defaults, depending on whether testnet or
* not */
setup_default_config(ld);
} else {
for (i = 0; i < tal_count(all_args); i++) {
if (all_args[i] != NULL) {
config_parse_line_number = i + 1;
argv[1] = all_args[i];
opt_parse(&argc, argv, config_log_stderr_exit);
argc = 2; /* opt_parse might have changed it */
}
}
}
tal_free(contents);
}
static char *test_subdaemons_and_exit(struct lightningd *ld)
{
test_subdaemons(ld);
exit(0);
return NULL;
}
static char *opt_lightningd_usage(struct lightningd *ld)
{
/* Reload config so that --help has the correct network defaults
* to display before it exits */
setup_default_config(ld);
char *extra = tal_fmt(NULL, "\nA bitcoin lightning daemon (default "
"values shown for network: %s).",
get_chainparams(ld)->network_name);
opt_usage_and_exit(extra);
tal_free(extra);
return NULL;
}
void register_opts(struct lightningd *ld)
{
opt_set_alloc(opt_allocfn, tal_reallocfn, tal_freefn);
opt_register_noarg("--help|-h", opt_lightningd_usage, ld,
"Print this message.");
opt_register_early_noarg("--test-daemons-only",
test_subdaemons_and_exit,
ld, opt_hidden);
opt_register_arg("--bitcoin-datadir", opt_set_talstr, NULL,
&ld->topology->bitcoind->datadir,
"-datadir arg for bitcoin-cli");
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("--bitcoin-cli", opt_set_talstr, NULL,
&ld->topology->bitcoind->cli,
"bitcoin-cli pathname");
opt_register_arg("--bitcoin-rpcuser", opt_set_talstr, NULL,
&ld->topology->bitcoind->rpcuser,
"bitcoind RPC username");
opt_register_arg("--bitcoin-rpcpassword", opt_set_talstr, NULL,
&ld->topology->bitcoind->rpcpass,
"bitcoind RPC password");
opt_register_arg("--bitcoin-rpcconnect", opt_set_talstr, NULL,
&ld->topology->bitcoind->rpcconnect,
"bitcoind RPC host to connect to");
opt_register_arg("--bitcoin-rpcport", opt_set_talstr, NULL,
&ld->topology->bitcoind->rpcport,
"bitcoind RPC port");
opt_register_arg("--pid-file=<file>", opt_set_talstr, opt_show_charp,
&ld->pidfile,
"Specify pid file");
opt_register_logging(ld);
opt_register_version();
configdir_register_opts(ld, &ld->config_dir, &ld->rpc_filename);
config_register_opts(ld);
#if DEVELOPER
dev_register_opts(ld);
#endif
}
/* 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[])
{
/* Load defaults. The actual values loaded here will be overwritten
* later by opt_parse_from_config. */
setup_default_config(ld);
/* Get any configdir/testnet options first. */
opt_early_parse_incomplete(argc, argv, opt_log_stderr_exit);
/* Now look for config file, but only handle the early
* options, others may be added on-demand */
opt_parse_from_config(ld, true);
}
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 */
opt_parse_from_config(ld, false);
/* Move to config dir, to save ourselves the hassle of path manip. */
if (chdir(ld->config_dir) != 0) {
log_unusual(ld->log, "Creating configuration directory %s",
ld->config_dir);
if (mkdir(ld->config_dir, 0700) != 0)
fatal("Could not make directory %s: %s",
ld->config_dir, strerror(errno));
if (chdir(ld->config_dir) != 0)
fatal("Could not change directory %s: %s",
ld->config_dir, strerror(errno));
}
opt_parse(&argc, argv, opt_log_stderr_exit);
if (argc != 1)
errx(1, "no arguments accepted");
/* We keep a separate variable rather than overriding use_proxy_always,
* 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 add_config(struct lightningd *ld,
struct json_stream *response,
const struct opt_table *opt,
const char *name, size_t len)
{
char *name0 = tal_strndup(response, name, len);
const char *answer = NULL;
if (opt->type & OPT_NOARG) {
if (opt->cb == (void *)opt_usage_and_exit
|| opt->cb == (void *)version_and_exit
/* These two show up as --network= */
|| opt->cb == (void *)opt_set_testnet
|| opt->cb == (void *)opt_set_mainnet
|| 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;
answer = tal_fmt(name0, "%s", *b ? "true" : "false");
} else if (opt->cb == (void *)opt_set_invbool) {
const bool *b = opt->u.carg;
answer = tal_fmt(name0, "%s", !*b ? "true" : "false");
} else if (opt->cb == (void *)opt_set_offline) {
answer = tal_fmt(name0, "%s",
(!ld->reconnect && !ld->listen)
? "true" : "false");
} 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) {
char *buf = tal_arr(name0, char, OPT_SHOW_LEN+1);
opt->show(buf, opt->u.carg);
if (streq(buf, "true") || streq(buf, "false")
|| strspn(buf, "0123456789.") == strlen(buf)) {
/* Let pure numbers and true/false through as
* literals. */
json_add_literal(response, name0,
buf, strlen(buf));
return;
}
/* opt_show_charp surrounds with "", strip them */
if (strstarts(buf, "\"")) {
buf[strlen(buf)-1] = '\0';
answer = buf + 1;
} else
answer = buf;
} else if (opt->cb_arg == (void *)opt_set_talstr
|| opt->cb_arg == (void *)opt_set_charp) {
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) {
answer = ld->logfile;
} 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_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_add_plugin_dir
|| opt->cb_arg == (void *)opt_disable_plugin
|| opt->cb_arg == (void *)plugin_opt_set) {
/* FIXME: We actually treat it as if they specified
* --plugin for each one, so ignore these */
#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));
}
tal_free(name0);
}
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 jsmntok_t *configtok;
if (!param(cmd, buffer, params,
p_opt("config", param_tok, &configtok),
NULL))
return command_param_failed();
if (!configtok) {
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 (configtok
&& !memeq(buffer + configtok->start,
configtok->end - configtok->start,
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 (configtok && !response) {
return command_fail(cmd, JSONRPC2_INVALID_PARAMS,
"Unknown config option '%.*s'",
json_tok_full_len(configtok),
json_tok_full(buffer, configtok));
}
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);