Browse Source
For the moment, the new lightningd will share all this anyway. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>ppa-0.6.1
Rusty Russell
8 years ago
4 changed files with 513 additions and 456 deletions
@ -0,0 +1,495 @@ |
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#include "daemon/bitcoind.h" |
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#include "daemon/configdir.h" |
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#include "daemon/lightningd.h" |
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#include "daemon/log.h" |
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#include "daemon/opt_time.h" |
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#include "daemon/options.h" |
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#include "daemon/routing.h" |
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#include "version.h" |
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#include <ccan/err/err.h> |
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#include <ccan/opt/opt.h> |
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#include <ccan/short_types/short_types.h> |
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#include <ccan/tal/grab_file/grab_file.h> |
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#include <ccan/tal/str/str.h> |
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#include <errno.h> |
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#include <inttypes.h> |
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#include <stdio.h> |
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#include <string.h> |
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#include <sys/socket.h> |
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#include <sys/stat.h> |
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#include <sys/types.h> |
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#include <unistd.h> |
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/* Tal wrappers for opt. */ |
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static void *opt_allocfn(size_t size) |
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{ |
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return tal_alloc_(NULL, size, false, false, TAL_LABEL("opt_allocfn", "")); |
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} |
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static void *tal_reallocfn(void *ptr, size_t size) |
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{ |
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if (!ptr) |
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return opt_allocfn(size); |
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tal_resize_(&ptr, 1, size, false); |
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return ptr; |
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} |
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static void tal_freefn(void *ptr) |
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{ |
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tal_free(ptr); |
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} |
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/* FIXME: Put into ccan/time. */ |
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#define TIME_FROM_SEC(sec) { { .tv_nsec = 0, .tv_sec = sec } } |
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#define TIME_FROM_MSEC(msec) \ |
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{ { .tv_nsec = ((msec) % 1000) * 1000000, .tv_sec = (msec) / 1000 } } |
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static char *opt_set_u64(const char *arg, u64 *u) |
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{ |
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char *endp; |
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unsigned long long l; |
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/* This is how the manpage says to do it. Yech. */ |
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errno = 0; |
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l = strtoull(arg, &endp, 0); |
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if (*endp || !arg[0]) |
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return tal_fmt(NULL, "'%s' is not a number", arg); |
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*u = l; |
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if (errno || *u != l) |
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return tal_fmt(NULL, "'%s' is out of range", arg); |
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return NULL; |
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} |
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static char *opt_set_u32(const char *arg, u32 *u) |
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{ |
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char *endp; |
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unsigned long l; |
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/* This is how the manpage says to do it. Yech. */ |
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errno = 0; |
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l = strtoul(arg, &endp, 0); |
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if (*endp || !arg[0]) |
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return tal_fmt(NULL, "'%s' is not a number", arg); |
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*u = l; |
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if (errno || *u != l) |
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return tal_fmt(NULL, "'%s' is out of range", arg); |
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return NULL; |
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} |
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static char *opt_set_u16(const char *arg, u16 *u) |
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{ |
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char *endp; |
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unsigned long l; |
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/* This is how the manpage says to do it. Yech. */ |
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errno = 0; |
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l = strtoul(arg, &endp, 0); |
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if (*endp || !arg[0]) |
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return tal_fmt(NULL, "'%s' is not a number", arg); |
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*u = l; |
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if (errno || *u != l) |
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return tal_fmt(NULL, "'%s' is out of range", arg); |
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return NULL; |
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} |
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static char *opt_set_s32(const char *arg, s32 *u) |
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{ |
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char *endp; |
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long l; |
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/* This is how the manpage says to do it. Yech. */ |
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errno = 0; |
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l = strtol(arg, &endp, 0); |
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if (*endp || !arg[0]) |
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return tal_fmt(NULL, "'%s' is not a number", arg); |
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*u = l; |
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if (errno || *u != l) |
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return tal_fmt(NULL, "'%s' is out of range", arg); |
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return NULL; |
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} |
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static void opt_show_u64(char buf[OPT_SHOW_LEN], const u64 *u) |
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{ |
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snprintf(buf, OPT_SHOW_LEN, "%"PRIu64, *u); |
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} |
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static void opt_show_u32(char buf[OPT_SHOW_LEN], const u32 *u) |
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{ |
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snprintf(buf, OPT_SHOW_LEN, "%"PRIu32, *u); |
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} |
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static void opt_show_s32(char buf[OPT_SHOW_LEN], const s32 *u) |
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{ |
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snprintf(buf, OPT_SHOW_LEN, "%"PRIi32, *u); |
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} |
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static void opt_show_u16(char buf[OPT_SHOW_LEN], const u16 *u) |
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{ |
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snprintf(buf, OPT_SHOW_LEN, "%u", *u); |
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} |
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static void config_register_opts(struct lightningd_state *dstate) |
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{ |
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opt_register_noarg("--bitcoind-regtest", opt_set_bool, |
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&dstate->config.regtest, |
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"Bitcoind is in regtest mode"); |
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opt_register_arg("--locktime-blocks", opt_set_u32, opt_show_u32, |
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&dstate->config.locktime_blocks, |
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"Blocks before peer can unilaterally spend funds"); |
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opt_register_arg("--max-locktime-blocks", opt_set_u32, opt_show_u32, |
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&dstate->config.locktime_max, |
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"Maximum seconds peer can lock up our funds"); |
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opt_register_arg("--anchor-onchain", opt_set_u32, opt_show_u32, |
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&dstate->config.anchor_onchain_wait, |
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"Blocks before we give up on pending anchor transaction"); |
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opt_register_arg("--anchor-confirms", opt_set_u32, opt_show_u32, |
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&dstate->config.anchor_confirms, |
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"Confirmations required for anchor transaction"); |
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opt_register_arg("--max-anchor-confirms", opt_set_u32, opt_show_u32, |
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&dstate->config.anchor_confirms_max, |
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"Maximum confirmations other side can wait for anchor transaction"); |
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opt_register_arg("--forever-confirms", opt_set_u32, opt_show_u32, |
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&dstate->config.forever_confirms, |
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"Confirmations after which we consider a reorg impossible"); |
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opt_register_arg("--commit-fee-min=<percent>", opt_set_u32, opt_show_u32, |
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&dstate->config.commitment_fee_min_percent, |
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"Minimum percentage of fee to accept for commitment"); |
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opt_register_arg("--commit-fee-max=<percent>", opt_set_u32, opt_show_u32, |
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&dstate->config.commitment_fee_max_percent, |
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"Maximum percentage of fee to accept for commitment (0 for unlimited)"); |
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opt_register_arg("--commit-fee=<percent>", opt_set_u32, opt_show_u32, |
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&dstate->config.commitment_fee_percent, |
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"Percentage of fee to request for their commitment"); |
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opt_register_arg("--override-fee-rate", opt_set_u64, opt_show_u64, |
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&dstate->config.override_fee_rate, |
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"Force a specific rate in satoshis per kb regardless of estimated fees"); |
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opt_register_arg("--default-fee-rate", opt_set_u64, opt_show_u64, |
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&dstate->config.default_fee_rate, |
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"Satoshis per kb if can't estimate fees"); |
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opt_register_arg("--min-htlc-expiry", opt_set_u32, opt_show_u32, |
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&dstate->config.min_htlc_expiry, |
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"Minimum number of blocks to accept an HTLC before expiry"); |
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opt_register_arg("--max-htlc-expiry", opt_set_u32, opt_show_u32, |
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&dstate->config.max_htlc_expiry, |
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"Maximum number of blocks to accept an HTLC before expiry"); |
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opt_register_arg("--deadline-blocks", opt_set_u32, opt_show_u32, |
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&dstate->config.deadline_blocks, |
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"Number of blocks before HTLC timeout before we drop connection"); |
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opt_register_arg("--bitcoind-poll", opt_set_time, opt_show_time, |
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&dstate->config.poll_time, |
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"Time between polling for new transactions"); |
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opt_register_arg("--commit-time", opt_set_time, opt_show_time, |
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&dstate->config.commit_time, |
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"Time after changes before sending out COMMIT"); |
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opt_register_arg("--fee-base", opt_set_u32, opt_show_u32, |
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&dstate->config.fee_base, |
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"Millisatoshi minimum to charge for HTLC"); |
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opt_register_arg("--fee-per-satoshi", opt_set_s32, opt_show_s32, |
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&dstate->config.fee_per_satoshi, |
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"Microsatoshi fee for every satoshi in HTLC"); |
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opt_register_arg("--add-route", opt_add_route, NULL, |
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dstate, |
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"Add route of form srcid/dstid/base/var/delay/minblocks" |
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"(base in millisatoshi, var in millionths of satoshi per satoshi)"); |
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opt_register_noarg("--disable-irc", opt_set_invbool, |
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&dstate->config.use_irc, |
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"Disable IRC peer discovery for routing"); |
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opt_register_noarg("--ignore-dbversion", opt_set_bool, |
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&dstate->config.db_version_ignore, |
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"Continue despite invalid database version (DANGEROUS!)"); |
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} |
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static void dev_register_opts(struct lightningd_state *dstate) |
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{ |
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opt_register_noarg("--dev-no-routefail", opt_set_bool, |
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&dstate->dev_never_routefail, opt_hidden); |
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opt_register_noarg("--dev-no-broadcast", opt_set_bool, |
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&dstate->dev_no_broadcast, opt_hidden); |
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} |
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static const struct config testnet_config = { |
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/* 6 blocks to catch cheating attempts. */ |
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.locktime_blocks = 6, |
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/* They can have up to 3 days. */ |
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.locktime_max = 3 * 6 * 24, |
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/* Testnet can have long runs of empty blocks. */ |
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.anchor_onchain_wait = 100, |
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/* We're fairly trusting, under normal circumstances. */ |
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.anchor_confirms = 1, |
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/* More than 10 confirms seems overkill. */ |
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.anchor_confirms_max = 10, |
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/* At some point, you've got to let it go... */ |
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/* BOLT #onchain:
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* |
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* Outputs... are considered *irrevocably resolved* once they |
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* are included in a block at least 100 deep on the most-work |
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* blockchain. 100 blocks is far greater than the longest |
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* known bitcoin fork, and the same value used to wait for |
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* confirmations of miner's rewards[1]. |
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*/ |
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.forever_confirms = 10, |
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/* Testnet fees are crazy, allow infinite feerange. */ |
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.commitment_fee_min_percent = 0, |
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.commitment_fee_max_percent = 0, |
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/* We offer to pay 5 times 2-block fee */ |
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.commitment_fee_percent = 500, |
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/* Use this rate, if specified, regardless of what estimatefee says. */ |
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.override_fee_rate = 0, |
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/* Use this rate by default if estimatefee doesn't estimate. */ |
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.default_fee_rate = 40000, |
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/* Don't bother me unless I have 6 hours to collect. */ |
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.min_htlc_expiry = 6 * 6, |
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/* Don't lock up channel for more than 5 days. */ |
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.max_htlc_expiry = 5 * 6 * 24, |
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/* If we're closing on HTLC expiry, and you're unresponsive, we abort. */ |
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.deadline_blocks = 4, |
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/* How often to bother bitcoind. */ |
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.poll_time = TIME_FROM_SEC(10), |
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/* Send commit 10msec after receiving; almost immediately. */ |
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.commit_time = TIME_FROM_MSEC(10), |
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/* Allow dust payments */ |
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.fee_base = 1, |
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/* Take 0.001% */ |
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.fee_per_satoshi = 10, |
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/* Discover new peers using IRC */ |
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.use_irc = true, |
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/* Don't ignore database version */ |
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.db_version_ignore = false, |
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}; |
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/* aka. "Dude, where's my coins?" */ |
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static const struct config mainnet_config = { |
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/* ~one day to catch cheating attempts. */ |
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.locktime_blocks = 6 * 24, |
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/* They can have up to 3 days. */ |
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.locktime_max = 3 * 6 * 24, |
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/* You should get in within 10 blocks. */ |
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.anchor_onchain_wait = 10, |
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/* We're fairly trusting, under normal circumstances. */ |
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.anchor_confirms = 3, |
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/* More than 10 confirms seems overkill. */ |
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.anchor_confirms_max = 10, |
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/* At some point, you've got to let it go... */ |
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/* BOLT #onchain:
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* |
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* Outputs... are considered *irrevocably resolved* once they |
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* are included in a block at least 100 deep on the most-work |
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* blockchain. 100 blocks is far greater than the longest |
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* known bitcoin fork, and the same value used to wait for |
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* confirmations of miner's rewards[1]. |
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*/ |
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.forever_confirms = 100, |
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/* Insist between 2 and 20 times the 2-block fee. */ |
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.commitment_fee_min_percent = 200, |
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.commitment_fee_max_percent = 2000, |
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/* We offer to pay 5 times 2-block fee */ |
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.commitment_fee_percent = 500, |
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/* Use this rate, if specified, regardless of what estimatefee says. */ |
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.override_fee_rate = 0, |
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/* Use this rate by default if estimatefee doesn't estimate. */ |
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.default_fee_rate = 40000, |
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/* Don't bother me unless I have 6 hours to collect. */ |
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.min_htlc_expiry = 6 * 6, |
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/* Don't lock up channel for more than 5 days. */ |
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.max_htlc_expiry = 5 * 6 * 24, |
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/* If we're closing on HTLC expiry, and you're unresponsive, we abort. */ |
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.deadline_blocks = 10, |
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/* How often to bother bitcoind. */ |
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.poll_time = TIME_FROM_SEC(30), |
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/* Send commit 10msec after receiving; almost immediately. */ |
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.commit_time = TIME_FROM_MSEC(10), |
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/* Discourage dust payments */ |
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.fee_base = 546000, |
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/* Take 0.001% */ |
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.fee_per_satoshi = 10, |
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/* Discover new peers using IRC */ |
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.use_irc = true, |
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/* Don't ignore database version */ |
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.db_version_ignore = false, |
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}; |
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static void check_config(struct lightningd_state *dstate) |
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{ |
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/* We do this by ensuring it's less than the minimum we would accept. */ |
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if (dstate->config.commitment_fee_max_percent != 0 |
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&& dstate->config.commitment_fee_max_percent |
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< dstate->config.commitment_fee_min_percent) |
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fatal("Commitment fee invalid min-max %u-%u", |
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dstate->config.commitment_fee_min_percent, |
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dstate->config.commitment_fee_max_percent); |
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if (dstate->config.forever_confirms < 100 && !dstate->testnet) |
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log_unusual(dstate->base_log, |
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"Warning: forever-confirms of %u is less than 100!", |
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dstate->config.forever_confirms); |
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if (dstate->config.anchor_confirms == 0) |
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fatal("anchor-confirms must be greater than zero"); |
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/* BOLT #2:
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* |
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* a node MUST estimate the deadline for successful redemption |
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* for each HTLC it offers. A node MUST NOT offer a HTLC |
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* after this deadline */ |
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if (dstate->config.deadline_blocks >= dstate->config.min_htlc_expiry) |
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fatal("Deadline %u can't be more than minimum expiry %u", |
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dstate->config.deadline_blocks, |
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dstate->config.min_htlc_expiry); |
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} |
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static void setup_default_config(struct lightningd_state *dstate) |
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{ |
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if (dstate->testnet) |
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dstate->config = testnet_config; |
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else |
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dstate->config = mainnet_config; |
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} |
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/* FIXME: make this nicer! */ |
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static void config_log_stderr_exit(const char *fmt, ...) |
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{ |
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char *msg; |
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va_list ap; |
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va_start(ap, fmt); |
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/* This is the format we expect: mangle it to remove '--'. */ |
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if (streq(fmt, "%s: %.*s: %s")) { |
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const char *argv0 = va_arg(ap, const char *); |
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unsigned int len = va_arg(ap, unsigned int); |
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const char *arg = va_arg(ap, const char *); |
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const char *problem = va_arg(ap, const char *); |
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msg = tal_fmt(NULL, "%s line %s: %.*s: %s", |
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argv0, arg+strlen(arg)+1, len-2, arg+2, problem); |
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} else { |
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msg = tal_vfmt(NULL, fmt, ap); |
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} |
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va_end(ap); |
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fatal("%s", msg); |
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} |
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/* We turn the config file into cmdline arguments. */ |
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static void opt_parse_from_config(struct lightningd_state *dstate) |
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{ |
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char *contents, **lines; |
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char **argv; |
||||
|
int i, argc; |
||||
|
|
||||
|
contents = grab_file(dstate, "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(dstate); |
||||
|
return; |
||||
|
} |
||||
|
|
||||
|
lines = tal_strsplit(contents, contents, "\r\n", STR_NO_EMPTY); |
||||
|
|
||||
|
/* We have to keep argv around, since opt will point into it */ |
||||
|
argv = tal_arr(dstate, char *, argc = 1); |
||||
|
argv[0] = "lightning config file"; |
||||
|
|
||||
|
for (i = 0; i < tal_count(lines) - 1; i++) { |
||||
|
if (strstarts(lines[i], "#")) |
||||
|
continue; |
||||
|
/* Only valid forms are "foo" and "foo=bar" */ |
||||
|
tal_resize(&argv, argc+1); |
||||
|
/* Stash line number after nul. */ |
||||
|
argv[argc++] = tal_fmt(argv, "--%s%c%u", lines[i], 0, i+1); |
||||
|
} |
||||
|
tal_resize(&argv, argc+1); |
||||
|
argv[argc] = NULL; |
||||
|
|
||||
|
opt_early_parse(argc, argv, config_log_stderr_exit); |
||||
|
/* Now we can set up defaults, depending on whether testnet or not */ |
||||
|
setup_default_config(dstate); |
||||
|
|
||||
|
opt_parse(&argc, argv, config_log_stderr_exit); |
||||
|
tal_free(contents); |
||||
|
} |
||||
|
|
||||
|
void handle_opts(struct lightningd_state *dstate, int argc, char *argv[]) |
||||
|
{ |
||||
|
opt_set_alloc(opt_allocfn, tal_reallocfn, tal_freefn); |
||||
|
|
||||
|
opt_register_noarg("--help|-h", opt_usage_and_exit, |
||||
|
"\n" |
||||
|
"A bitcoin lightning daemon.", |
||||
|
"Print this message."); |
||||
|
opt_register_arg("--port", opt_set_u16, opt_show_u16, &dstate->portnum, |
||||
|
"Port to bind to (0 means don't listen)"); |
||||
|
opt_register_arg("--bitcoin-datadir", opt_set_charp, NULL, |
||||
|
&bitcoin_datadir, |
||||
|
"-datadir arg for bitcoin-cli"); |
||||
|
opt_register_logging(dstate->base_log); |
||||
|
opt_register_version(); |
||||
|
|
||||
|
configdir_register_opts(dstate, |
||||
|
&dstate->config_dir, &dstate->rpc_filename); |
||||
|
config_register_opts(dstate); |
||||
|
dev_register_opts(dstate); |
||||
|
|
||||
|
/* 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(dstate->config_dir) != 0) { |
||||
|
log_unusual(dstate->base_log, "Creating lightningd dir %s" |
||||
|
" (because chdir gave %s)", |
||||
|
dstate->config_dir, strerror(errno)); |
||||
|
if (mkdir(dstate->config_dir, 0700) != 0) |
||||
|
fatal("Could not make directory %s: %s", |
||||
|
dstate->config_dir, strerror(errno)); |
||||
|
if (chdir(dstate->config_dir) != 0) |
||||
|
fatal("Could not change directory %s: %s", |
||||
|
dstate->config_dir, strerror(errno)); |
||||
|
} |
||||
|
|
||||
|
/* Now look for config file */ |
||||
|
opt_parse_from_config(dstate); |
||||
|
|
||||
|
opt_parse(&argc, argv, opt_log_stderr_exit); |
||||
|
if (argc != 1) |
||||
|
errx(1, "no arguments accepted"); |
||||
|
|
||||
|
check_config(dstate); |
||||
|
} |
||||
@ -0,0 +1,11 @@ |
|||||
|
#ifndef LIGHTNING_DAEMON_OPTIONS_H |
||||
|
#define LIGHTNING_DAEMON_OPTIONS_H |
||||
|
#include "config.h" |
||||
|
#include <ccan/tal/tal.h> |
||||
|
|
||||
|
struct lightningd_state; |
||||
|
|
||||
|
/* After this, we're in the .lightning dir, config file parsed. */ |
||||
|
void handle_opts(struct lightningd_state *dstate, int argc, char *argv[]); |
||||
|
|
||||
|
#endif /* LIGHTNING_DAEMON_OPTIONS_H */ |
||||
Loading…
Reference in new issue