@ -16,6 +16,7 @@
# include <ccan/err/err.h>
# include <ccan/io/io.h>
# include <ccan/opt/opt.h>
# include <ccan/tal/grab_file/grab_file.h>
# include <ccan/tal/str/str.h>
# include <ccan/tal/tal.h>
# include <ccan/time/time.h>
@ -29,6 +30,11 @@
# include <unistd.h>
# include <version.h>
/* 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 ;
@ -160,22 +166,77 @@ static void dev_register_opts(struct lightningd_state *dstate)
opt_register_noarg ( " --dev-no-routefail " , opt_set_bool ,
& dstate - > dev_never_routefail , opt_hidden ) ;
}
static void default_config ( struct config * config )
{
config - > regtest = false ;
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 ,
/* We're fairly trusting, under normal circumstances. */
. anchor_confirms = 1 ,
/* More than 10 confirms seems overkill. */
. anchor_confirms_max = 10 ,
/* At some point, you've got to let it go... */
/* BOLT #onchain:
*
* Outputs . . . are considered * irrevocably resolved * once they
* are included in a block at least 100 deep on the most - work
* blockchain . 100 blocks is far greater than the longest
* known bitcoin fork , and the same value used to wait for
* confirmations of miner ' s rewards [ 1 ] .
*/
. forever_confirms = 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 ,
/* Use this rate by default if estimatefee doesn't estimate. */
. default_fee_rate = 40000 ,
/* Don't bother me unless I have 6 hours to collect. */
. min_htlc_expiry = 6 * 6 ,
/* Don't lock up channel for more than 5 days. */
. max_htlc_expiry = 5 * 6 * 24 ,
/* If we're closing on HTLC expiry, and you're unresponsive, we abort. */
. deadline_blocks = 4 ,
/* 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 ,
/* Discover new peers using IRC */
. use_irc = true ,
} ;
/* aka. "Dude, where's my coins?" */
static const struct config mainnet_config = {
/* ~one day to catch cheating attempts. */
config - > locktime_blocks = 6 * 24 ;
. locktime_blocks = 6 * 24 ,
/* They can have up to 3 days. */
config - > locktime_max = 3 * 6 * 24 ;
. locktime_max = 3 * 6 * 24 ,
/* We're fairly trusting, under normal circumstances. */
config - > anchor_confirms = 3 ;
. anchor_confirms = 3 ,
/* More than 10 confirms seems overkill. */
config - > anchor_confirms_max = 10 ;
. anchor_confirms_max = 10 ,
/* At some point, you've got to let it go... */
/* BOLT #onchain:
@ -186,40 +247,40 @@ static void default_config(struct config *config)
* known bitcoin fork , and the same value used to wait for
* confirmations of miner ' s rewards [ 1 ] .
*/
config - > forever_confirms = 100 ;
. forever_confirms = 100 ,
/* Insist between 2 and 20 times the 2-block fee. */
config - > commitment_fee_min_percent = 200 ;
config - > commitment_fee_max_percent = 2000 ;
. commitment_fee_min_percent = 200 ,
. commitment_fee_max_percent = 2000 ,
/* We offer to pay 5 times 2-block fee */
config - > commitment_fee_percent = 500 ;
. commitment_fee_percent = 500 ,
/* Use this rate by default if estimatefee doesn't estimate. */
config - > default_fee_rate = 40000 ;
. default_fee_rate = 40000 ,
/* Don't bother me unless I have 6 hours to collect. */
config - > min_htlc_expiry = 6 * 6 ;
. min_htlc_expiry = 6 * 6 ,
/* Don't lock up channel for more than 5 days. */
config - > max_htlc_expiry = 5 * 6 * 24 ;
. max_htlc_expiry = 5 * 6 * 24 ,
/* If we're closing on HTLC expiry, and you're unresponsive, we abort. */
config - > deadline_blocks = 10 ;
. deadline_blocks = 10 ,
/* How often to bother bitcoind. */
config - > poll_time = time_from_sec ( 30 ) ;
. poll_time = TIME_FROM_SEC ( 30 ) ,
/* Send commit 10msec after receiving; almost immediately. */
config - > commit_time = time_from_msec ( 10 ) ;
. commit_time = TIME_FROM_MSEC ( 10 ) ,
/* Discourage dust payments */
config - > fee_base = 546000 ;
. fee_base = 546000 ,
/* Take 0.001% */
config - > fee_per_satoshi = 10 ;
. fee_per_satoshi = 10 ,
/* Discover new peers using IRC */
config - > use_irc = true ;
}
. use_irc = true ,
} ;
static void check_config ( struct lightningd_state * dstate )
{
@ -231,7 +292,7 @@ static void check_config(struct lightningd_state *dstate)
dstate - > config . commitment_fee_min_percent ,
dstate - > config . commitment_fee_max_percent ) ;
if ( dstate - > config . forever_confirms < 100 )
if ( dstate - > config . forever_confirms < 100 & & ! dstate - > testnet )
log_unusual ( dstate - > base_log ,
" Warning: forever-confirms of %u is less than 100! " ,
dstate - > config . forever_confirms ) ;
@ -267,7 +328,6 @@ static struct lightningd_state *lightningd_state(void)
txowatch_hash_init ( & dstate - > txowatches ) ;
dstate - > secpctx = secp256k1_context_create ( SECP256K1_CONTEXT_VERIFY
| SECP256K1_CONTEXT_SIGN ) ;
default_config ( & dstate - > config ) ;
list_head_init ( & dstate - > bitcoin_req ) ;
list_head_init ( & dstate - > wallet ) ;
list_head_init ( & dstate - > unpaid ) ;
@ -301,6 +361,83 @@ static void tal_freefn(void *ptr)
tal_free ( ptr ) ;
}
static void setup_default_config ( struct lightningd_state * dstate )
{
if ( dstate - > testnet )
dstate - > config = testnet_config ;
else
dstate - > config = mainnet_config ;
}
/* FIXME: make this nicer! */
static void config_log_stderr_exit ( const char * fmt , . . . )
{
char * msg ;
va_list ap ;
va_start ( ap , fmt ) ;
/* This is the format we expect: mangle it to remove '--'. */
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 * ) ;
msg = tal_fmt ( NULL , " %s line %s: %.*s: %s " ,
argv0 , arg + strlen ( arg ) + 1 , 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_state * dstate )
{
char * contents , * * lines ;
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 ) ;
}
int main ( int argc , char * argv [ ] )
{
struct lightningd_state * dstate = lightningd_state ( ) ;
@ -330,7 +467,7 @@ int main(int argc, char *argv[])
config_register_opts ( dstate ) ;
dev_register_opts ( dstate ) ;
/* Get any configdir options first. */
/* 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. */
Rusty Russell
8 years ago