[secnet] / secnet.c

#include "secnet.h"
#include <stdio.h>
#include <string.h>
#include <getopt.h>
#include <errno.h>
#include <unistd.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <pwd.h>

#include "util.h"
#include "conffile.h"
#include "process.h"

/* XXX should be from autoconf */
static const char *configfile="/etc/secnet/secnet.conf";
static const char *sites_key="sites";
bool_t just_check_config=False;
static char *userid=NULL;
static uid_t uid=0;
bool_t background=True;
static char *pidfile=NULL;
bool_t require_root_privileges=False;
cstring_t require_root_privileges_explanation=NULL;

static pid_t secnet_pid;

/* Structures dealing with poll() call */
struct poll_interest {
    beforepoll_fn *before;
    afterpoll_fn *after;
    void *state;
    uint32_t max_nfds;
    uint32_t nfds;
    cstring_t desc;
    struct poll_interest *next;
};
static struct poll_interest *reg=NULL;
static uint32_t total_nfds=10;

static bool_t finished=False;

/* Parse the command line options */
static void parse_options(int argc, char **argv)
{
    int c;

    while (True) {
	int option_index = 0;
	static struct option long_options[] = {
	    {"verbose", 0, 0, 'v'},
	    {"nowarnings", 0, 0, 'w'},
	    {"help", 0, 0, 2},
	    {"version", 0, 0, 1},
	    {"nodetach", 0, 0, 'n'},
	    {"silent", 0, 0, 'f'},
	    {"quiet", 0, 0, 'f'},
	    {"debug", 1, 0, 'd'},
	    {"config", 1, 0, 'c'},
	    {"just-check-config", 0, 0, 'j'},
	    {"sites-key", 1, 0, 's'},
	    {0,0,0,0}
	};

	c=getopt_long(argc, argv, "vwdnjc:ft:s:",
		      long_options, &option_index);
	if (c==-1)
	    break;

	switch(c) {
	case 2:
	    /* Help */
	    printf("Usage: secnet [OPTION]...\n\n"
		   "  -f, --silent, --quiet   suppress error messages\n"
		   "  -w, --nowarnings        suppress warnings\n"
		   "  -v, --verbose           output extra diagnostics\n"
		   "  -c, --config=filename   specify a configuration file\n"
		   "  -j, --just-check-config stop after reading "
		   "configuration file\n"
		   "  -s, --sites-key=name    configuration key that "
		   "specifies active sites\n"
		   "  -n, --nodetach          do not run in background\n"
		   "  -d, --debug=item,...    set debug options\n"
		   "      --help              display this help and exit\n"
		   "      --version           output version information "
		   "and exit\n"
		);
	    exit(0);
	    break;
      
	case 1:
	    /* Version */
	    printf("%s\n",version);
	    exit(0);
	    break;

	case 'v':
	    message_level|=M_INFO|M_NOTICE|M_WARNING|M_ERR|M_SECURITY|
		M_FATAL;
	    break;

	case 'w':
	    message_level&=(~M_WARNING);
	    break;

	case 'd':
	    message_level|=M_DEBUG_CONFIG|M_DEBUG_PHASE|M_DEBUG;
	    break;

	case 'f':
	    message_level=M_FATAL;
	    break;

	case 'n':
	    background=False;
	    break;

	case 'c':
	    if (optarg)
		configfile=safe_strdup(optarg,"config_filename");
	    else
		fatal("secnet: no config filename specified");
	    break;

	case 'j':
	    just_check_config=True;
	    break;

	case 's':
	    if (optarg)
		sites_key=safe_strdup(optarg,"sites-key");
	    else
		fatal("secnet: no sites key specified");
	    break;

	case '?':
	    break;

	default:
	    Message(M_ERR,"secnet: Unknown getopt code %c\n",c);
	}
    }

    if (argc-optind != 0) {
	Message(M_ERR,"secnet: You gave extra command line parameters, "
		"which were ignored.\n");
    }
}

static void setup(dict_t *config)
{
    list_t *l;
    item_t *site;
    dict_t *system;
    struct passwd *pw;
    struct cloc loc;
    int i;

    l=dict_lookup(config,"system");

    if (!l || list_elem(l,0)->type!=t_dict) {
	fatal("configuration does not include a \"system\" dictionary");
    }
    system=list_elem(l,0)->data.dict;
    loc=list_elem(l,0)->loc;

    /* Arrange systemwide log facility */
    l=dict_lookup(system,"log");
    if (!l) {
	fatal("configuration does not include a system/log facility");
    }
    system_log=init_log(l);

    /* Who are we supposed to run as? */
    userid=dict_read_string(system,"userid",False,"system",loc);
    if (userid) {
	do {
	    pw=getpwent();
	    if (pw && strcmp(pw->pw_name,userid)==0) {
		uid=pw->pw_uid;
		break;
	    }
	} while(pw);
	endpwent();
	if (uid==0) {
	    fatal("userid \"%s\" not found",userid);
	}
    }

    /* Pidfile name */
    pidfile=dict_read_string(system,"pidfile",False,"system",loc);

    /* Check whether we need root privileges */
    if (require_root_privileges && uid!=0) {
	fatal("the configured feature \"%s\" requires "
	      "that secnet retain root privileges while running.",
	      require_root_privileges_explanation);
    }

    /* Go along site list, starting sites */
    l=dict_lookup(config,sites_key);
    if (!l) {
	Message(M_WARNING,"secnet: configuration key \"%s\" is missing; no "
		"remote sites are defined\n",sites_key);
    } else {
	i=0;
	while ((site=list_elem(l, i++))) {
	    struct site_if *s;
	    if (site->type!=t_closure) {
		cfgfatal(site->loc,"system","non-closure in site list");
	    }
	    if (site->data.closure->type!=CL_SITE) {
		cfgfatal(site->loc,"system","non-site closure in site list");
	    }
	    s=site->data.closure->interface;
	    s->control(s->st,True);
	}
    }
}

void register_for_poll(void *st, beforepoll_fn *before,
		       afterpoll_fn *after, uint32_t max_nfds, cstring_t desc)
{
    struct poll_interest *i;

    i=safe_malloc(sizeof(*i),"register_for_poll");
    i->before=before;
    i->after=after;
    i->state=st;
    i->max_nfds=max_nfds;
    i->nfds=0;
    i->desc=desc;
    total_nfds+=max_nfds;
    i->next=reg;
    reg=i;
    return;
}

static void system_phase_hook(void *sst, uint32_t newphase)
{
    if (newphase==PHASE_SHUTDOWN && pidfile) {
	/* Try to unlink the pidfile; don't care if it fails */
	unlink(pidfile);
    }
}

static void run(void)
{
    struct timeval tv_now;
    uint64_t now;
    struct poll_interest *i;
    int rv, nfds, remain, idx;
    int timeout;
    struct pollfd *fds;

    fds=safe_malloc(sizeof(*fds)*total_nfds, "run");

    Message(M_NOTICE,"%s [%d]: starting\n",version,secnet_pid);

    do {
	if (gettimeofday(&tv_now, NULL)!=0) {
	    fatal_perror("main loop: gettimeofday");
	}
	now=((uint64_t)tv_now.tv_sec*(uint64_t)1000)+
	    ((uint64_t)tv_now.tv_usec/(uint64_t)1000);
	idx=0;
	for (i=reg; i; i=i->next) {
	    i->after(i->state, fds+idx, i->nfds, &tv_now, &now);
	    idx+=i->nfds;
	}
	remain=total_nfds;
	idx=0;
	timeout=-1;
	for (i=reg; i; i=i->next) {
	    nfds=remain;
	    rv=i->before(i->state, fds+idx, &nfds, &timeout, &tv_now, &now);
	    if (rv!=0) {
		/* XXX we need to handle this properly: increase the
		   nfds available */
		fatal("run: beforepoll_fn (%s) returns %d",i->desc,rv);
	    }
	    if (timeout<-1) {
		fatal("run: beforepoll_fn (%s) set timeout to %d",timeout);
	    }
	    idx+=nfds;
	    remain-=nfds;
	    i->nfds=nfds;
	}
	do {
	    if (finished) break;
	    rv=poll(fds, idx, timeout);
	    if (rv<0) {
		if (errno!=EINTR) {
		    fatal_perror("run: poll");
		}
	    }
	} while (rv<0);
    } while (!finished);
    free(fds);
}

static void droppriv(void)
{
    FILE *pf=NULL;
    pid_t p;
    int errfds[2];

    add_hook(PHASE_SHUTDOWN,system_phase_hook,NULL);

    /* Open the pidfile for writing now: we may be unable to do so
       once we drop privileges. */
    if (pidfile) {
	pf=fopen(pidfile,"w");
	if (!pf) {
	    fatal_perror("cannot open pidfile \"%s\"",pidfile);
	}
    }
    if (!background && pf) {
	fprintf(pf,"%d\n",getpid());
	fclose(pf);
    }

    /* Now drop privileges */
    if (uid!=0) {
	if (setuid(uid)!=0) {
	    fatal_perror("can't set uid to \"%s\"",userid);
	}
    }
    if (background) {
	p=fork();
	if (p>0) {
	    if (pf) {
		/* Parent process - write pidfile, exit */
		fprintf(pf,"%d\n",p);
		fclose(pf);
	    }
	    exit(0);
	} else if (p==0) {
	    /* Child process - all done, just carry on */
	    if (pf) fclose(pf);
	    /* Close stdin and stdout; we don't need them any more.
               stderr is redirected to the system/log facility */
	    if (pipe(errfds)!=0) {
		fatal_perror("can't create pipe for stderr");
	    }
	    close(0);
	    close(1);
	    close(2);
	    dup2(errfds[1],0);
	    dup2(errfds[1],1);
	    dup2(errfds[1],2);
	    secnet_is_daemon=True;
	    setsid();
	    log_from_fd(errfds[0],"stderr",system_log);
	} else {
	    /* Error */
	    fatal_perror("cannot fork");
	    exit(1);
	}
    }
    secnet_pid=getpid();
}

static signal_notify_fn finish,ignore_hup;
static void finish(void *st, int signum)
{
    finished=True;
    Message(M_NOTICE,"%s [%d]: received %s\n",version,secnet_pid,(string_t)st);
}
static void ignore_hup(void *st, int signum)
{
    Message(M_INFO,"%s [%d]: received SIGHUP\n",version,secnet_pid);
    return;
}

int main(int argc, char **argv)
{
    dict_t *config;

    enter_phase(PHASE_GETOPTS);
    parse_options(argc,argv);

    enter_phase(PHASE_READCONFIG);
    config=read_conffile(configfile);

    enter_phase(PHASE_SETUP);
    setup(config);

    if (just_check_config) {
	Message(M_INFO,"configuration file check complete\n");
	exit(0);
    }

    enter_phase(PHASE_GETRESOURCES);
    /* Appropriate phase hooks will have been run */
    
    enter_phase(PHASE_DROPPRIV);
    droppriv();

    start_signal_handling();
    request_signal_notification(SIGTERM,finish,safe_strdup("SIGTERM","run"));
    if (!background) request_signal_notification(SIGINT,finish,
						 safe_strdup("SIGINT","run"));
    request_signal_notification(SIGHUP,ignore_hup,NULL);
    enter_phase(PHASE_RUN);
    run();

    enter_phase(PHASE_SHUTDOWN);
    Message(M_NOTICE,"%s [%d]: finished\n",version,secnet_pid);

    return 0;
}
Commit	Line	Data
8689b3a9	1	#include "secnet.h"
2fe58dfd SE	2	#include <stdio.h>
	3	#include <string.h>
	4	#include <getopt.h>
2fe58dfd	5	#include <errno.h>
8689b3a9	6	#include <unistd.h>
2fe58dfd	7	#include <sys/socket.h>
2fe58dfd	8	#include <arpa/inet.h>
2fe58dfd	9	#include <pwd.h>
2fe58dfd	10
2fe58dfd SE	11	#include "util.h"
2fe58dfd SE	12	#include "conffile.h"
7138d0c5	13	#include "process.h"
2fe58dfd	14
b2a56f7c	15	/* XXX should be from autoconf */
fe5e9cc4 SE	16	static const char *configfile="/etc/secnet/secnet.conf";
fe5e9cc4 SE	17	static const char *sites_key="sites";
baa06aeb	18	bool_t just_check_config=False;
2fe58dfd SE	19	static char *userid=NULL;
2fe58dfd SE	20	static uid_t uid=0;
b2a56f7c	21	bool_t background=True;
2fe58dfd	22	static char *pidfile=NULL;
9d3a4132	23	bool_t require_root_privileges=False;
fe5e9cc4	24	cstring_t require_root_privileges_explanation=NULL;
2fe58dfd	25
7138d0c5 SE	26	static pid_t secnet_pid;
7138d0c5 SE	27
2fe58dfd SE	28	/* Structures dealing with poll() call */
	29	struct poll_interest {
	30	beforepoll_fn *before;
	31	afterpoll_fn *after;
	32	void *state;
	33	uint32_t max_nfds;
	34	uint32_t nfds;
fe5e9cc4	35	cstring_t desc;
2fe58dfd SE	36	struct poll_interest *next;
	37	};
	38	static struct poll_interest *reg=NULL;
	39	static uint32_t total_nfds=10;
	40
	41	static bool_t finished=False;
	42
	43	/* Parse the command line options */
	44	static void parse_options(int argc, char **argv)
	45	{
	46	int c;
	47
	48	while (True) {
	49	int option_index = 0;
	50	static struct option long_options[] = {
	51	{"verbose", 0, 0, 'v'},
	52	{"nowarnings", 0, 0, 'w'},
	53	{"help", 0, 0, 2},
	54	{"version", 0, 0, 1},
	55	{"nodetach", 0, 0, 'n'},
	56	{"silent", 0, 0, 'f'},
	57	{"quiet", 0, 0, 'f'},
	58	{"debug", 1, 0, 'd'},
	59	{"config", 1, 0, 'c'},
baa06aeb	60	{"just-check-config", 0, 0, 'j'},
794f2398	61	{"sites-key", 1, 0, 's'},
2fe58dfd SE	62	{0,0,0,0}
	63	};
	64
794f2398	65	c=getopt_long(argc, argv, "vwdnjc:ft:s:",
2fe58dfd SE	66	long_options, &option_index);
	67	if (c==-1)
	68	break;
	69
	70	switch(c) {
	71	case 2:
	72	/* Help */
4f5e39ec SE	73	printf("Usage: secnet [OPTION]...\n\n"
	74	" -f, --silent, --quiet suppress error messages\n"
	75	" -w, --nowarnings suppress warnings\n"
	76	" -v, --verbose output extra diagnostics\n"
	77	" -c, --config=filename specify a configuration file\n"
	78	" -j, --just-check-config stop after reading "
	79	"configuration file\n"
	80	" -s, --sites-key=name configuration key that "
	81	"specifies active sites\n"
	82	" -n, --nodetach do not run in background\n"
	83	" -d, --debug=item,... set debug options\n"
	84	" --help display this help and exit\n"
	85	" --version output version information "
	86	"and exit\n"
2fe58dfd SE	87	);
	88	exit(0);
	89	break;
	90
	91	case 1:
	92	/* Version */
4f5e39ec	93	printf("%s\n",version);
2fe58dfd SE	94	exit(0);
	95	break;
	96
	97	case 'v':
469fd1d9	98	message_level\|=M_INFO\|M_NOTICE\|M_WARNING\|M_ERR\|M_SECURITY\|
b2a56f7c	99	M_FATAL;
2fe58dfd SE	100	break;
2fe58dfd SE	101
b2a56f7c SE	102	case 'w':
b2a56f7c SE	103	message_level&=(~M_WARNING);
2fe58dfd SE	104	break;
	105
	106	case 'd':
b2a56f7c	107	message_level\|=M_DEBUG_CONFIG\|M_DEBUG_PHASE\|M_DEBUG;
2fe58dfd SE	108	break;
	109
	110	case 'f':
	111	message_level=M_FATAL;
	112	break;
	113
b2a56f7c SE	114	case 'n':
	115	background=False;
	116	break;
	117
2fe58dfd SE	118	case 'c':
	119	if (optarg)
	120	configfile=safe_strdup(optarg,"config_filename");
	121	else
	122	fatal("secnet: no config filename specified");
	123	break;
	124
baa06aeb SE	125	case 'j':
	126	just_check_config=True;
	127	break;
	128
794f2398 SE	129	case 's':
	130	if (optarg)
	131	sites_key=safe_strdup(optarg,"sites-key");
	132	else
	133	fatal("secnet: no sites key specified");
	134	break;
	135
2fe58dfd SE	136	case '?':
	137	break;
	138
	139	default:
469fd1d9	140	Message(M_ERR,"secnet: Unknown getopt code %c\n",c);
2fe58dfd SE	141	}
	142	}
	143
	144	if (argc-optind != 0) {
469fd1d9	145	Message(M_ERR,"secnet: You gave extra command line parameters, "
2fe58dfd SE	146	"which were ignored.\n");
	147	}
	148	}
	149
	150	static void setup(dict_t *config)
	151	{
	152	list_t *l;
	153	item_t *site;
	154	dict_t *system;
2fe58dfd SE	155	struct passwd *pw;
	156	struct cloc loc;
	157	int i;
	158
	159	l=dict_lookup(config,"system");
	160
	161	if (!l \|\| list_elem(l,0)->type!=t_dict) {
4f5e39ec	162	fatal("configuration does not include a \"system\" dictionary");
2fe58dfd SE	163	}
	164	system=list_elem(l,0)->data.dict;
	165	loc=list_elem(l,0)->loc;
	166
	167	/* Arrange systemwide log facility */
	168	l=dict_lookup(system,"log");
	169	if (!l) {
4f5e39ec	170	fatal("configuration does not include a system/log facility");
2fe58dfd	171	}
b2a56f7c	172	system_log=init_log(l);
2fe58dfd SE	173
	174	/* Who are we supposed to run as? */
	175	userid=dict_read_string(system,"userid",False,"system",loc);
	176	if (userid) {
	177	do {
	178	pw=getpwent();
	179	if (pw && strcmp(pw->pw_name,userid)==0) {
	180	uid=pw->pw_uid;
	181	break;
	182	}
	183	} while(pw);
	184	endpwent();
	185	if (uid==0) {
4f5e39ec	186	fatal("userid \"%s\" not found",userid);
2fe58dfd SE	187	}
	188	}
	189
	190	/* Pidfile name */
	191	pidfile=dict_read_string(system,"pidfile",False,"system",loc);
	192
9d3a4132 SE	193	/* Check whether we need root privileges */
9d3a4132 SE	194	if (require_root_privileges && uid!=0) {
4f5e39ec SE	195	fatal("the configured feature \"%s\" requires "
4f5e39ec SE	196	"that secnet retain root privileges while running.",
9d3a4132 SE	197	require_root_privileges_explanation);
	198	}
	199
2fe58dfd	200	/* Go along site list, starting sites */
794f2398	201	l=dict_lookup(config,sites_key);
2fe58dfd	202	if (!l) {
794f2398 SE	203	Message(M_WARNING,"secnet: configuration key \"%s\" is missing; no "
794f2398 SE	204	"remote sites are defined\n",sites_key);
9d3a4132 SE	205	} else {
	206	i=0;
	207	while ((site=list_elem(l, i++))) {
	208	struct site_if *s;
	209	if (site->type!=t_closure) {
	210	cfgfatal(site->loc,"system","non-closure in site list");
	211	}
	212	if (site->data.closure->type!=CL_SITE) {
	213	cfgfatal(site->loc,"system","non-site closure in site list");
	214	}
	215	s=site->data.closure->interface;
	216	s->control(s->st,True);
2fe58dfd	217	}
2fe58dfd SE	218	}
	219	}
	220
	221	void register_for_poll(void st, beforepoll_fn before,
fe5e9cc4	222	afterpoll_fn *after, uint32_t max_nfds, cstring_t desc)
2fe58dfd SE	223	{
	224	struct poll_interest *i;
	225
	226	i=safe_malloc(sizeof(*i),"register_for_poll");
	227	i->before=before;
	228	i->after=after;
	229	i->state=st;
	230	i->max_nfds=max_nfds;
	231	i->nfds=0;
	232	i->desc=desc;
	233	total_nfds+=max_nfds;
	234	i->next=reg;
	235	reg=i;
	236	return;
	237	}
	238
	239	static void system_phase_hook(void *sst, uint32_t newphase)
	240	{
	241	if (newphase==PHASE_SHUTDOWN && pidfile) {
	242	/* Try to unlink the pidfile; don't care if it fails */
	243	unlink(pidfile);
	244	}
	245	}
	246
	247	static void run(void)
	248	{
	249	struct timeval tv_now;
	250	uint64_t now;
	251	struct poll_interest *i;
	252	int rv, nfds, remain, idx;
	253	int timeout;
	254	struct pollfd *fds;
	255
3b83c932	256	fds=safe_malloc(sizeof(fds)total_nfds, "run");
2fe58dfd	257
7138d0c5	258	Message(M_NOTICE,"%s [%d]: starting\n",version,secnet_pid);
b2a56f7c	259
7138d0c5	260	do {
2fe58dfd SE	261	if (gettimeofday(&tv_now, NULL)!=0) {
	262	fatal_perror("main loop: gettimeofday");
	263	}
d3fe100d SE	264	now=((uint64_t)tv_now.tv_sec*(uint64_t)1000)+
d3fe100d SE	265	((uint64_t)tv_now.tv_usec/(uint64_t)1000);
2fe58dfd SE	266	idx=0;
	267	for (i=reg; i; i=i->next) {
	268	i->after(i->state, fds+idx, i->nfds, &tv_now, &now);
	269	idx+=i->nfds;
	270	}
	271	remain=total_nfds;
	272	idx=0;
	273	timeout=-1;
	274	for (i=reg; i; i=i->next) {
	275	nfds=remain;
	276	rv=i->before(i->state, fds+idx, &nfds, &timeout, &tv_now, &now);
	277	if (rv!=0) {
	278	/* XXX we need to handle this properly: increase the
	279	nfds available */
4f5e39ec	280	fatal("run: beforepoll_fn (%s) returns %d",i->desc,rv);
2fe58dfd SE	281	}
2fe58dfd SE	282	if (timeout<-1) {
4f5e39ec	283	fatal("run: beforepoll_fn (%s) set timeout to %d",timeout);
2fe58dfd SE	284	}
	285	idx+=nfds;
	286	remain-=nfds;
	287	i->nfds=nfds;
	288	}
	289	do {
7138d0c5	290	if (finished) break;
2fe58dfd SE	291	rv=poll(fds, idx, timeout);
	292	if (rv<0) {
	293	if (errno!=EINTR) {
	294	fatal_perror("run: poll");
	295	}
	296	}
	297	} while (rv<0);
7138d0c5	298	} while (!finished);
3b83c932	299	free(fds);
2fe58dfd SE	300	}
	301
	302	static void droppriv(void)
	303	{
	304	FILE *pf=NULL;
	305	pid_t p;
fe5e9cc4	306	int errfds[2];
2fe58dfd SE	307
	308	add_hook(PHASE_SHUTDOWN,system_phase_hook,NULL);
	309
b2a56f7c SE	310	/* Open the pidfile for writing now: we may be unable to do so
	311	once we drop privileges. */
	312	if (pidfile) {
	313	pf=fopen(pidfile,"w");
	314	if (!pf) {
	315	fatal_perror("cannot open pidfile \"%s\"",pidfile);
2fe58dfd	316	}
b2a56f7c SE	317	}
	318	if (!background && pf) {
	319	fprintf(pf,"%d\n",getpid());
	320	fclose(pf);
	321	}
	322
	323	/* Now drop privileges */
	324	if (uid!=0) {
	325	if (setuid(uid)!=0) {
	326	fatal_perror("can't set uid to \"%s\"",userid);
	327	}
	328	}
	329	if (background) {
2fe58dfd SE	330	p=fork();
	331	if (p>0) {
	332	if (pf) {
	333	/* Parent process - write pidfile, exit */
	334	fprintf(pf,"%d\n",p);
	335	fclose(pf);
	336	}
	337	exit(0);
	338	} else if (p==0) {
	339	/* Child process - all done, just carry on */
	340	if (pf) fclose(pf);
fe5e9cc4 SE	341	/* Close stdin and stdout; we don't need them any more.
	342	stderr is redirected to the system/log facility */
	343	if (pipe(errfds)!=0) {
	344	fatal_perror("can't create pipe for stderr");
	345	}
8dea8d37 SE	346	close(0);
8dea8d37 SE	347	close(1);
fe5e9cc4 SE	348	close(2);
	349	dup2(errfds[1],0);
	350	dup2(errfds[1],1);
	351	dup2(errfds[1],2);
b2a56f7c	352	secnet_is_daemon=True;
ff05a229	353	setsid();
fe5e9cc4	354	log_from_fd(errfds[0],"stderr",system_log);
2fe58dfd SE	355	} else {
	356	/* Error */
	357	fatal_perror("cannot fork");
	358	exit(1);
	359	}
2fe58dfd	360	}
7138d0c5 SE	361	secnet_pid=getpid();
7138d0c5 SE	362	}
2fe58dfd	363
7138d0c5 SE	364	static signal_notify_fn finish,ignore_hup;
	365	static void finish(void *st, int signum)
	366	{
	367	finished=True;
	368	Message(M_NOTICE,"%s [%d]: received %s\n",version,secnet_pid,(string_t)st);
	369	}
	370	static void ignore_hup(void *st, int signum)
	371	{
	372	Message(M_INFO,"%s [%d]: received SIGHUP\n",version,secnet_pid);
	373	return;
2fe58dfd SE	374	}
	375
	376	int main(int argc, char **argv)
	377	{
	378	dict_t *config;
	379
	380	enter_phase(PHASE_GETOPTS);
	381	parse_options(argc,argv);
	382
	383	enter_phase(PHASE_READCONFIG);
	384	config=read_conffile(configfile);
	385
	386	enter_phase(PHASE_SETUP);
	387	setup(config);
baa06aeb SE	388
	389	if (just_check_config) {
	390	Message(M_INFO,"configuration file check complete\n");
	391	exit(0);
	392	}
	393
	394	enter_phase(PHASE_GETRESOURCES);
	395	/* Appropriate phase hooks will have been run */
2fe58dfd SE	396
	397	enter_phase(PHASE_DROPPRIV);
	398	droppriv();
	399
7138d0c5	400	start_signal_handling();
fe5e9cc4 SE	401	request_signal_notification(SIGTERM,finish,safe_strdup("SIGTERM","run"));
	402	if (!background) request_signal_notification(SIGINT,finish,
	403	safe_strdup("SIGINT","run"));
7138d0c5	404	request_signal_notification(SIGHUP,ignore_hup,NULL);
042a8da9	405	enter_phase(PHASE_RUN);
2fe58dfd SE	406	run();
	407
	408	enter_phase(PHASE_SHUTDOWN);
7138d0c5	409	Message(M_NOTICE,"%s [%d]: finished\n",version,secnet_pid);
2fe58dfd SE	410
	411	return 0;
	412	}