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/* ISC license. */
#include <fcntl.h>
#include <skalibs/types.h>
#include <skalibs/strerr2.h>
#include <skalibs/subgetopt.h>
#include <skalibs/tai.h>
#include <skalibs/djbunix.h>
#include "s6-rcd.h"
#define USAGE "s6-rcd [ -v verbosity ] [ -1 ] [ -t timeout ] [ -T lameducktimeout ] [ -i rulesdir | -x rulesfile ] [ -l livedir ]"
#define dieusage() strerr_dieusage(100, USAGE) ;
unsigned int verbosity = 1 ;
globalflags_t flags =
{
.lameduck = 0 ;
} ;
tain_t lameduckdeadline = TAIN_INFINITE_RELATIVE ;
int main (int argc, char const *const *argv)
{
int spfd, sock ;
PROG = "s6-rcd" ;
{
char const *rules = 0 ;
unsigned int rulestype = 0 ;
int flag1 = 0 ;
unsigned int t = 0, T = 0 ;
subgetopt_t l = SUBGETOPT_ZERO ;
for (;;)
{
int opt = subgetopt_r(argc, argv, "v:1c:n:i:x:t:T:", &l) ;
if (opt == -1) break ;
switch (opt)
{
case 'v' : if (!uint0_scan(l.arg, &verbosity)) dieusage() ; break ;
case '1' : flag1 = 1 ; break ;
case 'i' : rules = l.arg ; rulestype = 1 ; break ;
case 'x' : rules = l.arg ; rulestype = 2 ; break ;
case 't' : if (!uint0_scan(l.arg, &t)) dieusage() ; break ;
case 'T' : if (!uint0_scan(l.arg, &T)) dieusage() ; break ;
default : dieusage() ;
}
}
argc -= l.ind ; argv += l.ind ;
if (t) tain_from_millisecs(&client_answer_tto, t) ;
if (T) tain_from_millisecs(&lameduckdeadline, T) ;
if (!rulestype) strerr_dief1x(100, "no access rights specified!") ;
if (flag1)
{
if (fcntl(1, F_GETFD) < 0)
strerr_dief1sys(100, "called with option -1 but stdout said") ;
}
else close(1) ;
spfd = signals_init() ;
clientrules_init(rulestype, rules) ;
sock = livedir_init() ;
if (!tain_now_set_stopwatch_g())
strerr_diefu1sys(111, "initialize clock") ;
if (flag1)
{
fd_write(1, "\n", 1) ;
fd_close(1) ;
}
}
for (;;)
{
iopause_fd x[2 + client_connections + client_monitors] ;
tain_t deadline ;
uint32_t j = 2 ;
int r = 1 ;
{
s6rc_event_t ev ;
while (ev_pop(&ev)) { ev_handle(&ev) ; ep_run(&ev) ; }
}
tain_add_g(&deadline, &tain_infinite_relative) ;
if (flags.lameduck) deadline = lameduckdeadline ;
x[0].fd = spfd ;
x[0].events = IOPAUSE_READ ;
x[1].fd = sock ;
x[1].events = !flags.lameduck ? IOPAUSE_READ : 0 ;
for (client_t *c = client_head ; c ; c = c->next)
if (client_prepare_iopause(c, &deadline, x, &j)) r = 0 ;
if (r) /* clean buffers */
{
if (flags.lameduck) break ;
if (flags.dbupdate && db_update())
{
flags.dbupdate = 0 ;
continue ;
}
}
r = iopause_g(x, j, &deadline) ;
if (r < 0) strerr_diefu1sys(111, "iopause") ;
if (!r)
{
if (flags.lameduck && !tain_future(&lameduckdeadline)) break ;
for (client_t *c = client_head ; c ; c = c ? c->next : client_head)
if (!tain_future(c->deadline)) client_yoink(&c) ;
continue ;
}
if (x[0].revents & IOPAUSE_READ) signals_handle() ;
for (client_t *c = client_head ; c ; c = c ? c->next : client_head)
if (!client_flush(c, x)) client_yoink(&c) ;
for (client_t *c = client_head ; c ; c = c ? c->next : client_head)
if (!client_read(c, x)) client_yoink(&c) ;
if (x[1].revents & IOPAUSE_READ)
{
uint8_t perms = 0 ;
int dummy ;
int fd = ipc_accept_nb(x[1].fd, 0, 0, &dummy) ;
if (fd < 0)
if (!error_isagain(errno)) strerr_diefu1sys(111, "accept connection") ;
else continue ;
else if (!clientrules_check(fd, &perms)) fd_close(fd) ;
else client_add(fd, perms) ;
}
}
return 0 ;
}
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