[tripe] / server / tripe.c

/* -*-c-*-
 *
 * Main program
 *
 * (c) 2001 Straylight/Edgeware
 */

/*----- Licensing notice --------------------------------------------------*
 *
 * This file is part of Trivial IP Encryption (TrIPE).
 *
 * TrIPE is free software: you can redistribute it and/or modify it under
 * the terms of the GNU General Public License as published by the Free
 * Software Foundation; either version 3 of the License, or (at your
 * option) any later version.
 *
 * TrIPE is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with TrIPE.  If not, see <https://www.gnu.org/licenses/>.
 */

/*----- Header files ------------------------------------------------------*/

#include "tripe.h"

/*----- Global variables --------------------------------------------------*/

sel_state sel;

/*----- Static variables --------------------------------------------------*/

static sel_timer it;
#define T_INTERVAL MIN(1)

/*----- Main code ---------------------------------------------------------*/

/* --- @interval@ --- *
 *
 * Arguments:	@struct timeval *tv@ = time when called
 *		@void *v@ = boring pointer
 *
 * Returns:	---
 *
 * Use:		Called periodically to do housekeeping tasks.
 */

static void interval(struct timeval *tv, void *v)
{
  struct timeval tvv;
  T( trace(T_PEER, "peer: interval timer"); )
  rand_seed(RAND_GLOBAL, MAXHASHSZ);
  p_interval();
  tvv = *tv;
  tvv.tv_sec += T_INTERVAL;
  sel_addtimer(&sel, &it, &tvv, interval, v);
}

/* --- @main@ --- *
 *
 * Arguments:	@int argc@ = number of command line arguments
 *		@char *argv[]@ = vector of arguments
 *
 * Returns:	Zero if OK, nonzero on error.
 *
 * Use:		Main program.  Provides a simple VPN.
 */

static void usage(FILE *fp)
{
  pquis(fp, "Usage: $ [-DF] [-d DIR] [-b ADDR] [-p PORT] [-n TUNNEL]\n\
	[-U USER] [-G GROUP] [-a SOCKET] [-m MODE] [-T TRACE-OPTS]\n\
	[-k PRIV-KEYRING] [-K PUB-KEYRING] [-t KEY-TAG]\n");
}

static void version(FILE *fp) { pquis(fp, "$, version " VERSION "\n"); }

static void help(FILE *fp)
{
  version(fp);
  fputc('\n', fp);
  usage(fp);
  fputs("\n\
Options:\n\
\n\
-h, --help		Display this help text.\n\
-v, --version		Display version number.\n\
-u, --usage		Display pointless usage message.\n\
    --tunnels		Display IP tunnel drivers and exit.\n\
\n\
-4, --ipv4		Transport over IPv4 only.\n\
-6, --ipv6		Transport over IPv6 only.\n\
-D, --daemon		Run in the background.\n\
-F, --foreground	Quit when stdin reports end-of-file.\n\
-d, --directory=DIR	Switch to directory DIR [default " CONFIGDIR "].\n\
-b, --bind-address=ADDR	Bind UDP socket to this IP ADDR.\n\
-p, --port=PORT		Select UDP port to listen to "
	"[default " STR(TRIPE_PORT) "].\n\
-n, --tunnel=TUNNEL	Seelect default tunnel driver.\n\
-U, --setuid=USER	Set uid to USER after initialization.\n\
-G, --setgid=GROUP	Set gid to GROUP after initialization.\n\
-k, --priv-keyring=FILE	Get private key from FILE.\n\
-K, --pub-keyring=FILE	Get public keys from FILE.\n\
-t, --tag=KEYTAG	Use private key labelled TAG.\n\
-a, --admin-socket=FILE	Use FILE as the adminstration socket.\n\
-m, --admin-perms=MODE	Permissions to set on admin socket [default 600].\n\
" T( "\
-T, --trace=OPTIONS	Turn on tracing options.\n\
" ) "\
", fp);
}

int main(int argc, char *argv[])
{
  const char *kr_priv = "keyring", *kr_pub = "keyring.pub";
  const char *tag_priv = 0;
  const char *csock = SOCKETDIR "/tripesock";
  int csockmode = 0600;
  const char *dir = CONFIGDIR;
  const char *p;
  const char *bindhost = 0, *bindsvc = STR(TRIPE_PORT);
  struct addrinfo aihint = { 0 }, *ailist;
  unsigned f = 0;
  int i;
  int err, selerr = 0;
  unsigned af;
  struct timeval tv;
  uid_t u = -1;
  gid_t g = -1;

#define f_bogus 1u
#define f_daemon 2u
#define f_foreground 4u

  ego(argv[0]);
  T( trace_on(stderr, 0); )

  if ((p = getenv("TRIPEDIR")) != 0)
    dir = p;
  if ((p = getenv("TRIPESOCK")) != 0)
    csock = p;
  tun_default = tunnels[0];
  aihint.ai_family = AF_UNSPEC;

  for (;;) {
    static const struct option opts[] = {
      { "help",		0,		0,	'h' },
      { "version",	0,		0,	'v' },
      { "usage",	0,		0,	'u' },
      { "tunnels",	0,		0,	'0' },

      { "ipv4",		0,		0,	'4' },
      { "ipv6",		0,		0,	'6' },
      { "daemon",	0,		0,	'D' },
      { "foreground",	0,		0,	'F' },
      { "uid",		OPTF_ARGREQ,	0,	'U' },
      { "setuid",	OPTF_ARGREQ,	0,	'U' },
      { "gid",		OPTF_ARGREQ,	0,	'G' },
      { "setgid",	OPTF_ARGREQ,	0,	'G' },
      { "bind-address",	OPTF_ARGREQ,	0,	'b' },
      { "tunnel",	OPTF_ARGREQ,	0,	'n' },
      { "port",		OPTF_ARGREQ,	0,	'p' },
      { "directory",	OPTF_ARGREQ,	0,	'd' },
      { "priv-keyring",	OPTF_ARGREQ,	0,	'k' },
      { "pub-keyring",	OPTF_ARGREQ,	0,	'K' },
      { "tag",		OPTF_ARGREQ,	0,	't' },
      { "admin-socket", OPTF_ARGREQ,	0,	'a' },
      { "admin-perms",	OPTF_ARGREQ,	0,	'm' },
#ifndef NTRACE
      { "trace",	OPTF_ARGREQ,	0,	'T' },
#endif

      { 0,		0,		0,	0 }
    };

    i = mdwopt(argc, argv, "hvu46DFU:G:b:n:p:d:k:K:t:a:m:" T("T:"),
	       opts, 0, 0, 0);
    if (i < 0)
      break;
    switch (i) {
      case 'h':
	help(stdout);
	exit(0);
      case 'v':
	version(stdout);
	exit(0);
      case 'u':
	usage(stdout);
	exit(0);

      case '4':
	aihint.ai_family = AF_INET;
	break;
      case '6':
	aihint.ai_family = AF_INET6;
	break;
      case 'D':
	f |= f_daemon;
	break;
      case 'U':
	u = u_getuser(optarg, &g);
	break;
      case 'G':
	g = u_getgroup(optarg);
	break;
      case 'F':
	f |= f_foreground;
	break;

      case 'b':
	bindhost = optarg;
	break;
      case 'p':
	bindsvc = optarg;
	break;
      case 'n': {
	int i;
	for (i = 0;; i++) {
	  if (!tunnels[i])
	    die(EXIT_FAILURE, "unknown tunnel `%s'", optarg);
	  if (mystrieq(optarg, tunnels[i]->name))
	    break;
	}
	tun_default = tunnels[i];
      } break;
      case 'd':
	dir = optarg;
	break;
      case 'k':
	kr_priv = optarg;
	break;
      case 'K':
	kr_pub = optarg;
	break;
      case 'a':
	csock = optarg;
	break;
      case 'm': {
	char *p;
	csockmode = strtol(optarg, &p, 8);
	if (*p) die(EXIT_FAILURE, "bad permissions: `%s'", optarg);
      } break;
      case 't':
	tag_priv = optarg;
	break;
#ifndef NTRACE
      case 'T':
	tr_flags = traceopt(tr_opts, optarg, tr_flags, 0);
	trace_level(tr_flags);
	break;
#endif
      case '0': {
	int i;
	for (i = 0; tunnels[i]; i++)
	  puts(tunnels[i]->name);
	exit(0);
      } break;
      default:
	f |= f_bogus;
	break;
    }
  }

  if (optind < argc || (f & f_bogus)) {
    usage(stderr);
    exit(EXIT_FAILURE);
  }
  if (!(~f & (f_daemon | f_foreground)))
    die(EXIT_FAILURE, "foreground operation for a daemon is silly");

  aihint.ai_protocol = IPPROTO_UDP;
  aihint.ai_socktype = SOCK_DGRAM;
  aihint.ai_flags = AI_PASSIVE | AI_ADDRCONFIG;
  if ((err = getaddrinfo(bindhost, bindsvc, &aihint, &ailist)) != 0) {
    die(EXIT_FAILURE, "couldn't resolve hostname %c%s%c, port `%s': %s",
	bindhost ? '`' : '<',
	bindhost ? bindhost : "nil",
	bindhost ? '\'' : '>',
	bindsvc, gai_strerror(err));
  }

  if (chdir(dir)) {
    die(EXIT_FAILURE, "can't set current directory to `%s': %s",
	dir, strerror(errno));
  }

  sel_init(&sel);
  sig_init(&sel);
  rand_noisesrc(RAND_GLOBAL, &noise_source);
  rand_seed(RAND_GLOBAL, MAXHASHSZ);
  signal(SIGPIPE, SIG_IGN);
  for (i = 0; tunnels[i]; i++)
    tunnels[i]->init();
  p_init();
  p_bind(ailist); freeaddrinfo(ailist);
  if (!(f & f_daemon)) {
    af = AF_WARN;
#ifndef NTRACE
    af |= AF_TRACE;
#endif
    if (f & f_foreground)
      af |= AF_FOREGROUND;
    a_create(STDIN_FILENO, STDOUT_FILENO, af);
  }

  for (i = 0; tunnels[i]; i++) {
    if (tunnels[i]->flags&TUNF_PRIVOPEN) {
      ps_split(f & f_daemon);
      break;
    }
  }

  a_init();
  a_signals();
  a_listen(csock, u, g, csockmode);
  a_switcherr();
  u_setugid(u, g);
  km_init(kr_priv, kr_pub, tag_priv);
  kx_init();
  if (f & f_daemon) {
    if (daemonize())
      die(EXIT_FAILURE, "couldn't become a daemon: %s", strerror(errno));
    a_daemon();
  }

  tv.tv_sec = time(0) + T_INTERVAL;
  tv.tv_usec = 0;
  sel_addtimer(&sel, &it, &tv, interval, 0);

  for (;;) {
    a_preselect();
    if (!sel_select(&sel))
      selerr = 0;
    else if (errno != EINTR && errno != EAGAIN) {
      a_warn("SERVER", "select-error", "?ERRNO", A_END);
      selerr++;
      if (selerr > 8) {
	a_warn("ABORT", "repeated-select-errors", A_END);
	abort();
      }
    }
  }

  return (0);
}

/*----- That's all, folks -------------------------------------------------*/
Commit	Line	Data
410c8acf	1	/* --c--
410c8acf	2	*
	3	* Main program
	4	*
	5	* (c) 2001 Straylight/Edgeware
	6	*/
	7
e04c2d50	8	/----- Licensing notice --------------------------------------------------
410c8acf	9	*
	10	* This file is part of Trivial IP Encryption (TrIPE).
	11	*
11ad66c2 MW	12	* TrIPE is free software: you can redistribute it and/or modify it under
	13	* the terms of the GNU General Public License as published by the Free
	14	* Software Foundation; either version 3 of the License, or (at your
	15	* option) any later version.
e04c2d50	16	*
11ad66c2 MW	17	* TrIPE is distributed in the hope that it will be useful, but WITHOUT
	18	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	19	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
	20	* for more details.
e04c2d50	21	*
410c8acf	22	* You should have received a copy of the GNU General Public License
11ad66c2	23	* along with TrIPE. If not, see <https://www.gnu.org/licenses/>.
410c8acf	24	*/
410c8acf	25
410c8acf	26	/----- Header files ------------------------------------------------------/
	27
	28	#include "tripe.h"
	29
	30	/----- Global variables --------------------------------------------------/
	31
	32	sel_state sel;
410c8acf	33
	34	/----- Static variables --------------------------------------------------/
	35
	36	static sel_timer it;
	37	#define T_INTERVAL MIN(1)
	38
	39	/----- Main code ---------------------------------------------------------/
	40
	41	/* --- @interval@ --- *
	42	*
	43	* Arguments: @struct timeval *tv@ = time when called
	44	* @void *v@ = boring pointer
	45	*
	46	* Returns: ---
	47	*
	48	* Use: Called periodically to do housekeeping tasks.
	49	*/
	50
42da2a58	51	static void interval(struct timeval tv, void v)
410c8acf	52	{
	53	struct timeval tvv;
	54	T( trace(T_PEER, "peer: interval timer"); )
b5c45da1	55	rand_seed(RAND_GLOBAL, MAXHASHSZ);
410c8acf	56	p_interval();
	57	tvv = *tv;
	58	tvv.tv_sec += T_INTERVAL;
	59	sel_addtimer(&sel, &it, &tvv, interval, v);
	60	}
	61
	62	/* --- @main@ --- *
	63	*
	64	* Arguments: @int argc@ = number of command line arguments
	65	* @char *argv[]@ = vector of arguments
	66	*
	67	* Returns: Zero if OK, nonzero on error.
	68	*
	69	* Use: Main program. Provides a simple VPN.
	70	*/
	71
	72	static void usage(FILE *fp)
	73	{
46dde080	74	pquis(fp, "Usage: $ [-DF] [-d DIR] [-b ADDR] [-p PORT] [-n TUNNEL]\n\
a9279e37	75	[-U USER] [-G GROUP] [-a SOCKET] [-m MODE] [-T TRACE-OPTS]\n\
2d752320	76	[-k PRIV-KEYRING] [-K PUB-KEYRING] [-t KEY-TAG]\n");
410c8acf	77	}
410c8acf	78
f98df549	79	static void version(FILE *fp) { pquis(fp, "$, version " VERSION "\n"); }
410c8acf	80
	81	static void help(FILE *fp)
	82	{
	83	version(fp);
	84	fputc('\n', fp);
	85	usage(fp);
	86	fputs("\n\
	87	Options:\n\
	88	\n\
	89	-h, --help Display this help text.\n\
	90	-v, --version Display version number.\n\
	91	-u, --usage Display pointless usage message.\n\
42da2a58	92	--tunnels Display IP tunnel drivers and exit.\n\
410c8acf	93	\n\
47828bd9 MW	94	-4, --ipv4 Transport over IPv4 only.\n\
47828bd9 MW	95	-6, --ipv6 Transport over IPv6 only.\n\
410c8acf	96	-D, --daemon Run in the background.\n\
46dde080	97	-F, --foreground Quit when stdin reports end-of-file.\n\
ef4a1ab7	98	-d, --directory=DIR Switch to directory DIR [default " CONFIGDIR "].\n\
d13e5724	99	-b, --bind-address=ADDR Bind UDP socket to this IP ADDR.\n\
165efde7 MW	100	-p, --port=PORT Select UDP port to listen to "
165efde7 MW	101	"[default " STR(TRIPE_PORT) "].\n\
42da2a58	102	-n, --tunnel=TUNNEL Seelect default tunnel driver.\n\
d13e5724	103	-U, --setuid=USER Set uid to USER after initialization.\n\
d13e5724	104	-G, --setgid=GROUP Set gid to GROUP after initialization.\n\
410c8acf	105	-k, --priv-keyring=FILE Get private key from FILE.\n\
	106	-K, --pub-keyring=FILE Get public keys from FILE.\n\
	107	-t, --tag=KEYTAG Use private key labelled TAG.\n\
	108	-a, --admin-socket=FILE Use FILE as the adminstration socket.\n\
a9279e37	109	-m, --admin-perms=MODE Permissions to set on admin socket [default 600].\n\
c5a2ea9b	110	" T( "\
410c8acf	111	-T, --trace=OPTIONS Turn on tracing options.\n\
c5a2ea9b	112	" ) "\
410c8acf	113	", fp);
	114	}
	115
	116	int main(int argc, char *argv[])
	117	{
	118	const char kr_priv = "keyring", kr_pub = "keyring.pub";
fc5f4823	119	const char *tag_priv = 0;
ef4a1ab7	120	const char *csock = SOCKETDIR "/tripesock";
a9279e37	121	int csockmode = 0600;
ef4a1ab7	122	const char *dir = CONFIGDIR;
410c8acf	123	const char *p;
89640f3f MW	124	const char bindhost = 0, bindsvc = STR(TRIPE_PORT);
89640f3f MW	125	struct addrinfo aihint = { 0 }, *ailist;
410c8acf	126	unsigned f = 0;
42da2a58	127	int i;
89640f3f	128	int err, selerr = 0;
46dde080	129	unsigned af;
42da2a58	130	struct timeval tv;
410c8acf	131	uid_t u = -1;
	132	gid_t g = -1;
	133
	134	#define f_bogus 1u
	135	#define f_daemon 2u
46dde080	136	#define f_foreground 4u
410c8acf	137
410c8acf	138	ego(argv[0]);
d360f042	139	T( trace_on(stderr, 0); )
410c8acf	140
	141	if ((p = getenv("TRIPEDIR")) != 0)
	142	dir = p;
797cf76b MW	143	if ((p = getenv("TRIPESOCK")) != 0)
797cf76b MW	144	csock = p;
42da2a58	145	tun_default = tunnels[0];
47828bd9	146	aihint.ai_family = AF_UNSPEC;
410c8acf	147
	148	for (;;) {
	149	static const struct option opts[] = {
	150	{ "help", 0, 0, 'h' },
	151	{ "version", 0, 0, 'v' },
	152	{ "usage", 0, 0, 'u' },
42da2a58	153	{ "tunnels", 0, 0, '0' },
410c8acf	154
47828bd9 MW	155	{ "ipv4", 0, 0, '4' },
47828bd9 MW	156	{ "ipv6", 0, 0, '6' },
410c8acf	157	{ "daemon", 0, 0, 'D' },
46dde080	158	{ "foreground", 0, 0, 'F' },
410c8acf	159	{ "uid", OPTF_ARGREQ, 0, 'U' },
	160	{ "setuid", OPTF_ARGREQ, 0, 'U' },
	161	{ "gid", OPTF_ARGREQ, 0, 'G' },
	162	{ "setgid", OPTF_ARGREQ, 0, 'G' },
767b36e2	163	{ "bind-address", OPTF_ARGREQ, 0, 'b' },
42da2a58	164	{ "tunnel", OPTF_ARGREQ, 0, 'n' },
410c8acf	165	{ "port", OPTF_ARGREQ, 0, 'p' },
	166	{ "directory", OPTF_ARGREQ, 0, 'd' },
	167	{ "priv-keyring", OPTF_ARGREQ, 0, 'k' },
	168	{ "pub-keyring", OPTF_ARGREQ, 0, 'K' },
	169	{ "tag", OPTF_ARGREQ, 0, 't' },
	170	{ "admin-socket", OPTF_ARGREQ, 0, 'a' },
a9279e37	171	{ "admin-perms", OPTF_ARGREQ, 0, 'm' },
410c8acf	172	#ifndef NTRACE
	173	{ "trace", OPTF_ARGREQ, 0, 'T' },
	174	#endif
	175
	176	{ 0, 0, 0, 0 }
	177	};
	178
47828bd9	179	i = mdwopt(argc, argv, "hvu46DFU:G:b:n:p:d:k:K:t:a:m:" T("T:"),
42da2a58	180	opts, 0, 0, 0);
410c8acf	181	if (i < 0)
	182	break;
	183	switch (i) {
	184	case 'h':
	185	help(stdout);
	186	exit(0);
	187	case 'v':
	188	version(stdout);
	189	exit(0);
	190	case 'u':
	191	usage(stdout);
	192	exit(0);
	193
47828bd9 MW	194	case '4':
	195	aihint.ai_family = AF_INET;
	196	break;
	197	case '6':
	198	aihint.ai_family = AF_INET6;
	199	break;
410c8acf	200	case 'D':
	201	f \|= f_daemon;
	202	break;
52b86648 MW	203	case 'U':
	204	u = u_getuser(optarg, &g);
	205	break;
	206	case 'G':
	207	g = u_getgroup(optarg);
	208	break;
46dde080 MW	209	case 'F':
	210	f \|= f_foreground;
	211	break;
767b36e2	212
89640f3f MW	213	case 'b':
	214	bindhost = optarg;
	215	break;
	216	case 'p':
	217	bindsvc = optarg;
	218	break;
42da2a58	219	case 'n': {
	220	int i;
	221	for (i = 0;; i++) {
	222	if (!tunnels[i])
	223	die(EXIT_FAILURE, "unknown tunnel `%s'", optarg);
	224	if (mystrieq(optarg, tunnels[i]->name))
	225	break;
	226	}
	227	tun_default = tunnels[i];
	228	} break;
410c8acf	229	case 'd':
	230	dir = optarg;
	231	break;
	232	case 'k':
	233	kr_priv = optarg;
	234	break;
	235	case 'K':
	236	kr_pub = optarg;
	237	break;
	238	case 'a':
	239	csock = optarg;
	240	break;
a9279e37 MW	241	case 'm': {
	242	char *p;
	243	csockmode = strtol(optarg, &p, 8);
	244	if (*p) die(EXIT_FAILURE, "bad permissions: `%s'", optarg);
	245	} break;
410c8acf	246	case 't':
	247	tag_priv = optarg;
	248	break;
	249	#ifndef NTRACE
	250	case 'T':
	251	tr_flags = traceopt(tr_opts, optarg, tr_flags, 0);
	252	trace_level(tr_flags);
	253	break;
	254	#endif
ef4a1ab7	255	case '0': {
42da2a58	256	int i;
	257	for (i = 0; tunnels[i]; i++)
	258	puts(tunnels[i]->name);
ef4a1ab7	259	exit(0);
ef4a1ab7	260	} break;
410c8acf	261	default:
	262	f \|= f_bogus;
	263	break;
	264	}
	265	}
	266
	267	if (optind < argc \|\| (f & f_bogus)) {
	268	usage(stderr);
	269	exit(EXIT_FAILURE);
	270	}
46dde080 MW	271	if (!(~f & (f_daemon \| f_foreground)))
46dde080 MW	272	die(EXIT_FAILURE, "foreground operation for a daemon is silly");
410c8acf	273
89640f3f MW	274	aihint.ai_protocol = IPPROTO_UDP;
	275	aihint.ai_socktype = SOCK_DGRAM;
	276	aihint.ai_flags = AI_PASSIVE \| AI_ADDRCONFIG;
	277	if ((err = getaddrinfo(bindhost, bindsvc, &aihint, &ailist)) != 0) {
	278	die(EXIT_FAILURE, "couldn't resolve hostname %c%s%c, port `%s': %s",
	279	bindhost ? '`' : '<',
	280	bindhost ? bindhost : "nil",
	281	bindhost ? '\'' : '>',
	282	bindsvc, gai_strerror(err));
	283	}
	284
410c8acf	285	if (chdir(dir)) {
	286	die(EXIT_FAILURE, "can't set current directory to `%s': %s",
	287	dir, strerror(errno));
	288	}
	289
	290	sel_init(&sel);
	291	sig_init(&sel);
	292	rand_noisesrc(RAND_GLOBAL, &noise_source);
b5c45da1	293	rand_seed(RAND_GLOBAL, MAXHASHSZ);
410c8acf	294	signal(SIGPIPE, SIG_IGN);
42da2a58	295	for (i = 0; tunnels[i]; i++)
42da2a58	296	tunnels[i]->init();
7737eb87 MW	297	p_init();
7737eb87 MW	298	p_bind(ailist); freeaddrinfo(ailist);
3cdc3f3a	299	if (!(f & f_daemon)) {
46dde080	300	af = AF_WARN;
3cdc3f3a	301	#ifndef NTRACE
46dde080	302	af \|= AF_TRACE;
3cdc3f3a	303	#endif
46dde080 MW	304	if (f & f_foreground)
	305	af \|= AF_FOREGROUND;
	306	a_create(STDIN_FILENO, STDOUT_FILENO, af);
3cdc3f3a	307	}
97d410cd MW	308
	309	for (i = 0; tunnels[i]; i++) {
	310	if (tunnels[i]->flags&TUNF_PRIVOPEN) {
	311	ps_split(f & f_daemon);
	312	break;
	313	}
	314	}
	315
7737eb87 MW	316	a_init();
	317	a_signals();
	318	a_listen(csock, u, g, csockmode);
	319	a_switcherr();
52b86648	320	u_setugid(u, g);
410c8acf	321	km_init(kr_priv, kr_pub, tag_priv);
8362ac1c	322	kx_init();
410c8acf	323	if (f & f_daemon) {
19dd2531	324	if (daemonize())
410c8acf	325	die(EXIT_FAILURE, "couldn't become a daemon: %s", strerror(errno));
	326	a_daemon();
	327	}
	328
42da2a58	329	tv.tv_sec = time(0) + T_INTERVAL;
	330	tv.tv_usec = 0;
	331	sel_addtimer(&sel, &it, &tv, interval, 0);
410c8acf	332
42da2a58	333	for (;;) {
c511e1f9	334	a_preselect();
42da2a58	335	if (!sel_select(&sel))
	336	selerr = 0;
	337	else if (errno != EINTR && errno != EAGAIN) {
f43df819	338	a_warn("SERVER", "select-error", "?ERRNO", A_END);
42da2a58	339	selerr++;
42da2a58	340	if (selerr > 8) {
f43df819	341	a_warn("ABORT", "repeated-select-errors", A_END);
42da2a58	342	abort();
410c8acf	343	}
	344	}
	345	}
	346
	347	return (0);
	348	}
	349
	350	/----- That's all, folks -------------------------------------------------/