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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/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_escaped.h>
#include <common/memleak.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/jsonrpc.h>
#include <lightningd/lightningd.h>
#include <lightningd/log.h>
#include <lightningd/opt_time.h>
#include <lightningd/options.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_alloc_(NULL, size, false, false, 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_port(const char *arg, struct lightningd *ld)
{
char *endp;
unsigned long l;
log_broken(ld->log, "--port has been deprecated, use --autolisten=0 or --addr=:<port>");
if (!deprecated_apis)
return "--port is deprecated";
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);
ld->portnum = l;
if (errno || ld->portnum != l)
return tal_fmt(NULL, "'%s' is out of range", arg);
if (ld->portnum == 0)
ld->autolisten = false;
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)
{
size_t n = tal_count(ld->wireaddrs);
char const *err_msg;
assert(arg != NULL);
tal_resize(&ld->wireaddrs, n+1);
tal_resize(&ld->listen_announce, n+1);
ld->listen_announce[n] = ala;
if (!parse_wireaddr_internal(arg, &ld->wireaddrs[n], ld->portnum,
true, &err_msg)) {
return tal_fmt(NULL, "Unable to parse address '%s': %s", arg, err_msg);
}
return NULL;
}
static char *opt_add_addr(const char *arg, struct lightningd *ld)
{
return opt_add_addr_withtype(arg, ld, ADDR_LISTEN_AND_ANNOUNCE);
}
static char *opt_add_bind_addr(const char *arg, struct lightningd *ld)
{
return opt_add_addr_withtype(arg, ld, ADDR_LISTEN);
}
static char *opt_add_announce_addr(const char *arg, struct lightningd *ld)
{
return opt_add_addr_withtype(arg, ld, ADDR_ANNOUNCE);
}
static char *opt_add_ipaddr(const char *arg, struct lightningd *ld)
{
log_broken(ld->log, "--ipaddr has been deprecated, use --addr");
if (!deprecated_apis)
return "--ipaddr is deprecated";
return opt_add_addr(arg, ld);
}
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:
*
* the first byte of `rgb` 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_len(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`]
*...
* It MUST set `alias` to a valid UTF-8 string, with any `alias` bytes
* following equal to zero.
*/
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_fee_rates(const char *arg, struct chain_topology *topo)
{
tal_free(topo->override_fee_rate);
topo->override_fee_rate = tal_arr(topo, u32, 3);
for (size_t i = 0; i < tal_count(topo->override_fee_rate); i++) {
char *endp;
char term;
if (i == tal_count(topo->override_fee_rate)-1)
term = '\0';
else
term = '/';
topo->override_fee_rate[i] = strtol(arg, &endp, 10);
if (endp == arg || *endp != term)
return tal_fmt(NULL,
"Feerates must be <num>/<num>/<num>");
arg = endp + 1;
}
return NULL;
}
static char *opt_set_offline(struct lightningd *ld)
{
ld->reconnect = false;
ld->listen = false;
return NULL;
}
static void config_register_opts(struct lightningd *ld)
{
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("--locktime-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 a peer can lock up our funds");
opt_register_arg("--anchor-onchain", opt_set_u32, opt_show_u32,
&ld->config.anchor_onchain_wait,
"Blocks before we give up on pending anchor transaction");
opt_register_arg("--anchor-confirms", opt_set_u32, opt_show_u32,
&ld->config.anchor_confirms,
"Confirmations required for anchor transaction");
opt_register_arg("--max-anchor-confirms", opt_set_u32, opt_show_u32,
&ld->config.anchor_confirms_max,
"Maximum confirmations other side can wait for anchor 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("--override-fee-rates", opt_set_fee_rates, NULL,
ld->topology,
"Force a specific rates (immediate/normal/slow) in satoshis per kw regardless of estimated fees");
opt_register_arg("--default-fee-rate", opt_set_u32, opt_show_u32,
&ld->topology->default_fee_rate,
"Satoshis per kw if can't estimate fees");
opt_register_arg("--cltv-delta", opt_set_u32, opt_show_u32,
&ld->config.cltv_expiry_delta,
"Number of blocks for ctlv_expiry_delta");
opt_register_arg("--cltv-final", opt_set_u32, opt_show_u32,
&ld->config.cltv_final,
"Number of blocks for final ctlv_expiry");
opt_register_arg("--max-htlc-expiry", opt_set_u32, opt_show_u32,
&ld->config.max_htlc_expiry,
"Maximum number of blocks to accept an HTLC before expiry");
opt_register_arg("--bitcoind-poll", opt_set_time, opt_show_time,
&ld->config.poll_time,
"Time between polling for new transactions");
opt_register_arg("--commit-time", opt_set_time, opt_show_time,
&ld->config.commit_time,
"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_s32, opt_show_s32,
&ld->config.fee_per_satoshi,
"Microsatoshi fee for every satoshi in HTLC");
opt_register_arg("--ipaddr", opt_add_ipaddr, NULL,
ld, opt_hidden);
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) 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("--debug-subdaemon-io",
opt_set_charp, NULL, &ld->debug_subdaemon_io,
"Enable full peer IO logging in subdaemons ending in this string (can also send SIGUSR1 to toggle)");
opt_register_arg("--autocleaninvoice-cycle",
opt_set_u64, opt_show_u64,
&ld->ini_autocleaninvoice_cycle,
"Perform cleanup of expired invoices every given seconds, or do not autoclean if 0");
opt_register_arg("--autocleaninvoice-expired-by",
opt_set_u64, opt_show_u64,
&ld->ini_autocleaninvoice_cycle,
"If expired invoice autoclean enabled, invoices that have expired for at least this given seconds are cleaned");
}
#if DEVELOPER
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_arg("--dev-debugger=<subdaemon>", opt_subd_debug, NULL,
ld, "Wait for gdb attach at start of <subdaemon>");
opt_register_arg("--dev-broadcast-interval=<ms>", opt_set_uintval,
opt_show_uintval, &ld->config.broadcast_interval,
"Time between gossip broadcasts in milliseconds");
opt_register_arg("--dev-disconnect=<filename>", opt_subd_dev_disconnect,
NULL, ld, "File containing disconnection points");
}
#endif
static const struct config testnet_config = {
/* 6 blocks to catch cheating attempts. */
.locktime_blocks = 6,
/* They can have up to 3 days. */
.locktime_max = 3 * 6 * 24,
/* Testnet can have long runs of empty blocks. */
.anchor_onchain_wait = 100,
/* We're fairly trusting, under normal circumstances. */
.anchor_confirms = 1,
/* More than 10 confirms seems overkill. */
.anchor_confirms_max = 10,
/* 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 = 6,
/* Don't lock up channel for more than 5 days. */
.max_htlc_expiry = 5 * 6 * 24,
/* How often to bother bitcoind. */
.poll_time = TIME_FROM_SEC(10),
/* Send commit 10msec after receiving; almost immediately. */
.commit_time = TIME_FROM_MSEC(10),
/* Allow dust payments */
.fee_base = 1,
/* Take 0.001% */
.fee_per_satoshi = 10,
/* BOLT #7:
* Each node SHOULD flush outgoing announcements once every 60 seconds */
.broadcast_interval = 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,
};
/* 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 3 days. */
.locktime_max = 3 * 6 * 24,
/* You should get in within 10 blocks. */
.anchor_onchain_wait = 10,
/* We're fairly trusting, under normal circumstances. */
.anchor_confirms = 3,
/* More than 10 confirms seems overkill. */
.anchor_confirms_max = 10,
/* 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:
*
* The `cltv_expiry_delta` for channels. `3R+2G+2S` */
/* R = 2, G = 1, S = 3 */
.cltv_expiry_delta = 14,
/* BOLT #2:
*
* The minimum `cltv_expiry` we will accept for terminal payments: the
* worst case for the terminal node C lower at `2R+G+S` blocks */
.cltv_final = 8,
/* Don't lock up channel for more than 5 days. */
.max_htlc_expiry = 5 * 6 * 24,
/* How often to bother bitcoind. */
.poll_time = TIME_FROM_SEC(30),
/* Send commit 10msec after receiving; almost immediately. */
.commit_time = TIME_FROM_MSEC(10),
/* Discourage dust payments */
.fee_base = 1000,
/* Take 0.001% */
.fee_per_satoshi = 10,
/* BOLT #7:
* Each node SHOULD flush outgoing announcements once every 60 seconds */
.broadcast_interval = 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,
};
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");
}
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. */
static void opt_parse_from_config(struct lightningd *ld)
{
char *contents, **lines;
char **all_args; /*For each line: either argument string or NULL*/
char *argv[3];
int i, argc;
contents = grab_file(ld, "config");
/* Doesn't have to exist. */
if (!contents) {
if (errno != ENOENT)
fatal("Opening and reading config: %s",
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 = 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;
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(argc, argv, config_log_stderr_exit);
}
}
/* Now we can set up defaults, depending on whether testnet or not */
setup_default_config(ld);
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_daemons_and_exit(struct lightningd *ld)
{
test_daemons(ld);
exit(0);
return NULL;
}
void register_opts(struct lightningd *ld)
{
opt_set_alloc(opt_allocfn, tal_reallocfn, tal_freefn);
opt_register_early_noarg("--help|-h", opt_usage_and_exit,
"\n"
"A bitcoin lightning daemon.",
"Print this message.");
opt_register_early_noarg("--test-daemons-only",
test_daemons_and_exit,
ld, opt_hidden);
/* --port needs to be an early arg to force it being parsed
* before --ipaddr which may depend on it */
opt_register_early_arg("--port", opt_set_port, NULL, 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_arg(
"--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_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)
{
u8 der[PUBKEY_DER_LEN];
pubkey_to_der(der, &ld->id);
if (!ld->rgb)
/* You can't get much red by default */
ld->rgb = tal_dup_arr(ld, u8, der, 3, 0);
if (!ld->alias) {
u64 adjective, noun;
char *name;
memcpy(&adjective, der+3, sizeof(adjective));
memcpy(&noun, der+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 = 32 - 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_opts(struct lightningd *ld, int argc, char *argv[])
{
/* Load defaults first, so that --help (in early options) has something
* to display. 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(argc, argv, opt_log_stderr_exit);
/* 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));
}
/* Now look for config file */
opt_parse_from_config(ld);
opt_parse(&argc, argv, opt_log_stderr_exit);
if (argc != 1)
errx(1, "no arguments accepted");
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_result *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_result *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 *)test_daemons_and_exit) {
/* 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! */
abort();
}
} else if (opt->type & OPT_HASARG) {
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_set_fee_rates) {
struct chain_topology *topo = ld->topology;
if (topo->override_fee_rate)
answer = tal_fmt(name0, "%u/%u/%u",
topo->override_fee_rate[0],
topo->override_fee_rate[1],
topo->override_fee_rate[2]);
} else if (opt->cb_arg == (void *)opt_set_port) {
if (!deprecated_apis)
answer = tal_fmt(name0, "%u", ld->portnum);
} else if (opt->cb_arg == (void *)opt_add_ipaddr) {
/* Covered by opt_add_addr below */
} else if (opt->cb_arg == (void *)opt_add_addr) {
json_add_opt_addrs(response, name0,
ld->wireaddrs, ld->listen_announce,
ADDR_LISTEN_AND_ANNOUNCE);
return;
} else if (opt->cb_arg == (void *)opt_add_bind_addr) {
json_add_opt_addrs(response, name0,
ld->wireaddrs, ld->listen_announce,
ADDR_LISTEN);
return;
} else if (opt->cb_arg == (void *)opt_add_announce_addr) {
json_add_opt_addrs(response, name0,
ld->wireaddrs, ld->listen_announce,
ADDR_ANNOUNCE);
return;
#if DEVELOPER
} else if (strstarts(name, "dev-")) {
/* Ignore dev settings */
#endif
} else {
/* Insert more decodes here! */
abort();
}
}
if (answer) {
struct json_escaped *esc = json_escape(NULL, answer);
json_add_escaped_string(response, name0, take(esc));
}
tal_free(name0);
}
static void json_listconfigs(struct command *cmd,
const char *buffer, const jsmntok_t *params)
{
size_t i;
struct json_result *response = new_json_result(cmd);
jsmntok_t *configtok;
bool found = false;
if (!json_get_params(cmd, buffer, params, "?config", &configtok, NULL)) {
return;
}
json_object_start(response, NULL);
if (!configtok)
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;
found = true;
add_config(cmd->ld, response, &opt_table[i],
name+1, len-1);
}
}
json_object_end(response);
if (configtok && !found) {
command_fail(cmd, "Unknown config option '%.*s'",
configtok->end - configtok->start,
buffer + configtok->start);
return;
}
command_success(cmd, response);
}
static const struct json_command listconfigs_command = {
"listconfigs",
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);