Esempio n. 1
0
/* parse the <VirtualHost> addresses */
const char *ap_parse_vhost_addrs(apr_pool_t *p,
                                 const char *hostname,
                                 server_rec *s)
{
    server_addr_rec **addrs;
    const char *err;

    /* start the list of addreses */
    addrs = &s->addrs;
    while (hostname[0]) {
        err = get_addresses(p, ap_getword_conf(p, &hostname), &addrs, s->port);
        if (err) {
            *addrs = NULL;
            return err;
        }
    }
    /* terminate the list */
    *addrs = NULL;
    if (s->addrs) {
        if (s->addrs->host_port) {
            /* override the default port which is inherited from main_server */
            s->port = s->addrs->host_port;
        }
    }
    return NULL;
}
int main(int argc, char **argv) {
    char devicename[PROP_VALUE_MAX];
    char buildid[PROP_VALUE_MAX];
    int fd;

    __system_property_get("ro.build.product", devicename);
    __system_property_get("ro.build.id", buildid);
    printf("ro.build.product=%s\n", devicename);
    printf("ro.build.id=%s\n", buildid);

    fd = open("/dev/kmem", O_RDONLY);
    if (fd < 0) {
        fprintf(stderr, "/dev/kmem open failed: %s.\n", strerror(errno));
        return -1;
    }

    pmem = mmap(NULL, KERNEL_SIZE, PROT_READ, MAP_SHARED, fd, KERNEL_START_ADDRESS);
    if (pmem == MAP_FAILED) {
        fprintf(stderr, "mmap failed: %s.\n", strerror(errno));
        close(fd);
        return -1;
    }

    if (get_addresses() != 0) {
        munmap(pmem, KERNEL_SIZE);
        close(fd);
        exit(EXIT_FAILURE);
    }

    munmap(pmem, KERNEL_SIZE);
    close(fd);

    exit(EXIT_SUCCESS);
    return 0;
}
Esempio n. 3
0
int
main(int argc, char **argv)
{
    int ret;
    pcap_wrapper *pw;
    char ch, filter[128], is_usage = 0, show_version = 0;

    while((ch = getopt(argc, argv, "s:p:i:S:Cd:l:hv")) != -1) {
        switch(ch) {
            case 's': opts.server = strdup(optarg); break;
            case 'p': opts.port= atoi(optarg); break;
            case 'i': opts.device = strdup(optarg); break;
            case 'S': opts.script = strdup(optarg); break;
            case 'C': opts.is_calc_mode = 1; break;
            case 'd': opts.duration = atoi(optarg); break;
            case 'l':
                opts.specified_addresses = 1;
                if (parse_addresses(optarg)) {
                    logger(ERROR, "parsing local addresses\n");
                    return EXIT_FAILURE;
                }
                break;
            case 'f': opts.log_file = strdup(optarg); break;
            case 'h': is_usage = 1; break;
            case 'v': show_version= 1; break;
        }
    }

    if( is_usage ) {
        usage(argv[0]);
        exit(0);
    }
    if(show_version) {
        printf("%s version is %s\n", argv[0], VERSION);
        exit(0);
    }
    if(!opts.specified_addresses && get_addresses() != 0) {
        exit(0);
    }
    if (!opts.port) logger(ERROR, "port is required.\n");
    if (!opts.device) logger(ERROR, "device is required.\n");
    if (opts.log_file) set_log_file(opts.log_file); 
    if (!(pw = pw_create(opts.device))) logger(ERROR, "start captrue packet failed.\n");
    if(opts.server) {
        snprintf(filter, sizeof(filter), "host %s and tcp port %d", opts.server, opts.port);
    } else {
        snprintf(filter, sizeof(filter), "tcp port %d", opts.port);
    }

    check_lua_script();
    // start capature loop.
    ret = core_loop(pw, filter, process_packet);
    if(ret == -1) logger(ERROR, "start core loop failed.\n");

    pw_release(pw);
    script_release(L);
    return 0;
}
Esempio n. 4
0
static void
rndc_start(isc_task_t *task, isc_event_t *event) {
	isc_event_free(&event);

	get_addresses(servername, (in_port_t) remoteport);

	currentaddr = 0;
	rndc_startconnect(&serveraddrs[currentaddr++], task);
}
Esempio n. 5
0
File: rarpd.c Progetto: afett/rarpd
int find_interfaces(struct rarpd *rarpd)
{
	if (nl_open(&rarpd->nl_ctx) != 0) {
		return -1;
	}

	if (get_links(rarpd) != 0) {
		return -1;
	}

	if (get_addresses(rarpd) != 0) {
		return -1;
	}

	nl_close(&rarpd->nl_ctx);
	return 0;
}
Esempio n. 6
0
int server_start(int lockfd)
{
        int errsv;
        int new_fd;
        int sock;
        pid_t pid;
        socklen_t addr_size;
        struct addrinfo *p = NULL;
        struct sockaddr_storage their_addr;
        char address[NI_MAXHOST];
        char buf[sizeof(long)];

        /* get addresses */
        get_addresses(&p);

        /* attempt bind to each address */
        do {
                getnameinfo(p->ai_addr, p->ai_addrlen, address, NI_MAXHOST,
                        NULL, 0, NI_NUMERICSERV);
                syslog(LOG_DEBUG, "Binding to %s", address);
                sock = get_socket(p); /* get a socket and bind */
                if (sock != -1) break;
                p = p->ai_next;
        } while (p != NULL);

        freeaddrinfo(p);

        if (sock == -1) {
                syslog(LOG_ERR, "Failed to bind.  Exiting");
                _exit(EXIT_FAILURE);
        }

        /* listening */
        if (listen(sock, BACKLOG) == 0) {
                syslog(LOG_INFO, "Listening on [%s]:%li", address,config->port);
        }
        else {
                errsv = errno;
                fprintf(stderr, "ERROR: %s\n", strerror(errsv));
                syslog(LOG_ERR, "Failed to listen on [%s]:%li  Exiting.",
                                address, config->port);
                free_config();
                _exit(EXIT_FAILURE);
        }

        /* drop privileges */
        if (config->dropprivs) {
                gid_t newgid = getgid();
                setgroups(1, &newgid);
                if (setuid(getuid()) != 0) {
                        fprintf(stderr,
                        "ERROR: Failed to drop root privileges.  Exiting.\n");
                        exit(EXIT_FAILURE);
                }
                /* verify privileges cannot be restored */
                if (setuid(0) != -1) {
                        fprintf(stderr,
                        "ERROR: Regained root privileges.  Exiting.\n");
                        exit(EXIT_FAILURE);
                }
        }

        addr_size = sizeof their_addr;

        /* daemonize */
        if (config->daemon == 0) {
                if (daemon(0, 0) == -1) {
                        errsv = errno;
                        fprintf(stderr, "ERROR: %s\n", strerror(errsv));
                        syslog(LOG_ERR, "Failed to daemonize. Exiting.");
                        free_config();
                        exit(EXIT_FAILURE);
                }
        }

        /* write pid to lockfile */
        snprintf(buf, sizeof(long), "%ld\n", (long) getpid());
        if (write(lockfd, buf, strlen(buf)) != strlen(buf)) {
                fprintf(stderr, "Error writing to pidfile\n");
                exit(EXIT_FAILURE);
        }

        /* install exit handler to kill child procs */
        atexit(killhandlerprocs);

        for (;;) {
                /* incoming! */
                ++hits;
                new_fd = accept(sock, (struct sockaddr *)&their_addr,
                                &addr_size);
                pid = fork(); /* fork new process to handle connection */
                if (pid == -1) {
                        /* fork failed */
                        close(new_fd);
                        close(sock);
                        return -1;
                }
                else if (pid == 0) {
                        /* let the children play */
                        close(sock); /* children never listen */
                        handle_connection(new_fd, their_addr);
                }
                else {
                        /* parent can close connection */
                        handler_procs++;
                        close(new_fd);
                }
        }
}
Esempio n. 7
0
API_EXPORT_NONSTD(const char *) ap_set_name_virtual_host (cmd_parms *cmd, void *dummy, char *arg)
{
    /* use whatever port the main server has at this point */
    return get_addresses(cmd->pool, arg, &name_vhost_list_tail,
			    cmd->server->port);
}
Esempio n. 8
0
File: rndc.c Progetto: OPSF/uClinux
int
main(int argc, char **argv) {
	isc_boolean_t show_final_mem = ISC_FALSE;
	isc_result_t result = ISC_R_SUCCESS;
	isc_taskmgr_t *taskmgr = NULL;
	isc_task_t *task = NULL;
	isc_log_t *log = NULL;
	isc_logconfig_t *logconfig = NULL;
	isc_logdestination_t logdest;
	cfg_parser_t *pctx = NULL;
	cfg_obj_t *config = NULL;
	const char *keyname = NULL;
	struct in_addr in;
	struct in6_addr in6;
	char *p;
	size_t argslen;
	int ch;
	int i;

	result = isc_file_progname(*argv, program, sizeof(program));
	if (result != ISC_R_SUCCESS)
		memcpy(program, "rndc", 5);
	progname = program;

	admin_conffile = RNDC_CONFFILE;
	admin_keyfile = RNDC_KEYFILE;

	isc_sockaddr_any(&local4);
	isc_sockaddr_any6(&local6);

	result = isc_app_start();
	if (result != ISC_R_SUCCESS)
		fatal("isc_app_start() failed: %s", isc_result_totext(result));

	isc_commandline_errprint = ISC_FALSE;

	while ((ch = isc_commandline_parse(argc, argv, "b:c:hk:Mmp:s:Vy:"))
	       != -1) {
		switch (ch) {
		case 'b':
			if (inet_pton(AF_INET, isc_commandline_argument,
				      &in) == 1) {
				isc_sockaddr_fromin(&local4, &in, 0);
				local4set = ISC_TRUE;
			} else if (inet_pton(AF_INET6, isc_commandline_argument,
					     &in6) == 1) {
				isc_sockaddr_fromin6(&local6, &in6, 0);
				local6set = ISC_TRUE;
			}
			break;

		case 'c':
			admin_conffile = isc_commandline_argument;
			break;

		case 'k':
			admin_keyfile = isc_commandline_argument;
			break;

		case 'M':
			isc_mem_debugging = ISC_MEM_DEBUGTRACE;
			break;

		case 'm':
			show_final_mem = ISC_TRUE;
			break;

		case 'p':
			remoteport = atoi(isc_commandline_argument);
			if (remoteport > 65535 || remoteport == 0)
				fatal("port '%s' out of range",
				      isc_commandline_argument);
			break;

		case 's':
			servername = isc_commandline_argument;
			break;

		case 'V':
			verbose = ISC_TRUE;
			break;

		case 'y':
			keyname = isc_commandline_argument;
			break;
 
		case '?':
			if (isc_commandline_option != '?') {
				fprintf(stderr, "%s: invalid argument -%c\n",
					program, isc_commandline_option);
				usage(1);
			}
		case 'h':
			usage(0);
			break;
		default:
			fprintf(stderr, "%s: unhandled option -%c\n",
				program, isc_commandline_option);
                        exit(1);
		}
	}

	argc -= isc_commandline_index;
	argv += isc_commandline_index;

	if (argc < 1)
		usage(1);

	isc_random_get(&serial);

	DO("create memory context", isc_mem_create(0, 0, &mctx));
	DO("create socket manager", isc_socketmgr_create(mctx, &socketmgr));
	DO("create task manager", isc_taskmgr_create(mctx, 1, 0, &taskmgr));
	DO("create task", isc_task_create(taskmgr, 0, &task));

	DO("create logging context", isc_log_create(mctx, &log, &logconfig));
	isc_log_setcontext(log);
	DO("setting log tag", isc_log_settag(logconfig, progname));
	logdest.file.stream = stderr;
	logdest.file.name = NULL;
	logdest.file.versions = ISC_LOG_ROLLNEVER;
	logdest.file.maximum_size = 0;
	DO("creating log channel",
	   isc_log_createchannel(logconfig, "stderr",
		   		 ISC_LOG_TOFILEDESC, ISC_LOG_INFO, &logdest,
				 ISC_LOG_PRINTTAG|ISC_LOG_PRINTLEVEL));
	DO("enabling log channel", isc_log_usechannel(logconfig, "stderr",
						      NULL, NULL));

	parse_config(mctx, log, keyname, &pctx, &config);

	isccc_result_register();

	command = *argv;

	/*
	 * Convert argc/argv into a space-delimited command string
	 * similar to what the user might enter in interactive mode
	 * (if that were implemented).
	 */
	argslen = 0;
	for (i = 0; i < argc; i++)
		argslen += strlen(argv[i]) + 1;

	args = isc_mem_get(mctx, argslen);
	if (args == NULL)
		DO("isc_mem_get", ISC_R_NOMEMORY);

	p = args;
	for (i = 0; i < argc; i++) {
		size_t len = strlen(argv[i]);
		memcpy(p, argv[i], len);
		p += len;
		*p++ = ' ';
	}

	p--;
	*p++ = '\0';
	INSIST(p == args + argslen);

	notify("%s", command);

	if (strcmp(command, "restart") == 0)
		fatal("'%s' is not implemented", command);

	if (nserveraddrs == 0)
		get_addresses(servername, (in_port_t) remoteport);

	DO("post event", isc_app_onrun(mctx, task, rndc_start, NULL));

	result = isc_app_run();
	if (result != ISC_R_SUCCESS)
		fatal("isc_app_run() failed: %s", isc_result_totext(result));

	if (connects > 0 || sends > 0 || recvs > 0)
		isc_socket_cancel(sock, task, ISC_SOCKCANCEL_ALL);

	isc_task_detach(&task);
	isc_taskmgr_destroy(&taskmgr);
	isc_socketmgr_destroy(&socketmgr);
	isc_log_destroy(&log);
	isc_log_setcontext(NULL);

	cfg_obj_destroy(pctx, &config);
	cfg_parser_destroy(&pctx);

	isc_mem_put(mctx, args, argslen);
	isccc_ccmsg_invalidate(&ccmsg);

	dns_name_destroy();

	if (show_final_mem)
		isc_mem_stats(mctx, stderr);

	isc_mem_destroy(&mctx);

	if (failed)
		return (1);

	return (0);
}
Esempio n. 9
0
File: rndc.c Progetto: OPSF/uClinux
static void
parse_config(isc_mem_t *mctx, isc_log_t *log, const char *keyname,
	     cfg_parser_t **pctxp, cfg_obj_t **configp)
{
	isc_result_t result;
	const char *conffile = admin_conffile;
	const cfg_obj_t *addresses = NULL;
	const cfg_obj_t *defkey = NULL;
	const cfg_obj_t *options = NULL;
	const cfg_obj_t *servers = NULL;
	const cfg_obj_t *server = NULL;
	const cfg_obj_t *keys = NULL;
	const cfg_obj_t *key = NULL;
	const cfg_obj_t *defport = NULL;
	const cfg_obj_t *secretobj = NULL;
	const cfg_obj_t *algorithmobj = NULL;
	cfg_obj_t *config = NULL;
	const cfg_obj_t *address = NULL;
	const cfg_listelt_t *elt;
	const char *secretstr;
	const char *algorithm;
	static char secretarray[1024];
	const cfg_type_t *conftype = &cfg_type_rndcconf;
	isc_boolean_t key_only = ISC_FALSE;
	const cfg_listelt_t *element;

	if (! isc_file_exists(conffile)) {
		conffile = admin_keyfile;
		conftype = &cfg_type_rndckey;

		if (! isc_file_exists(conffile))
			fatal("neither %s nor %s was found",
			      admin_conffile, admin_keyfile);
		key_only = ISC_TRUE;
	}

	DO("create parser", cfg_parser_create(mctx, log, pctxp));

	/*
	 * The parser will output its own errors, so DO() is not used.
	 */
	result = cfg_parse_file(*pctxp, conffile, conftype, &config);
	if (result != ISC_R_SUCCESS)
		fatal("could not load rndc configuration");

	if (!key_only)
		(void)cfg_map_get(config, "options", &options);

	if (key_only && servername == NULL)
		servername = "127.0.0.1";
	else if (servername == NULL && options != NULL) {
		const cfg_obj_t *defserverobj = NULL;
		(void)cfg_map_get(options, "default-server", &defserverobj);
		if (defserverobj != NULL)
			servername = cfg_obj_asstring(defserverobj);
	}

	if (servername == NULL)
		fatal("no server specified and no default");

	if (!key_only) {
		(void)cfg_map_get(config, "server", &servers);
		if (servers != NULL) {
			for (elt = cfg_list_first(servers);
			     elt != NULL; 
			     elt = cfg_list_next(elt))
			{
				const char *name;
				server = cfg_listelt_value(elt);
				name = cfg_obj_asstring(cfg_map_getname(server));
				if (strcasecmp(name, servername) == 0)
					break;
				server = NULL;
			}
		}
	}

	/*
	 * Look for the name of the key to use.
	 */
	if (keyname != NULL)
		;		/* Was set on command line, do nothing. */
	else if (server != NULL) {
		DO("get key for server", cfg_map_get(server, "key", &defkey));
		keyname = cfg_obj_asstring(defkey);
	} else if (options != NULL) {
		DO("get default key", cfg_map_get(options, "default-key",
						  &defkey));
		keyname = cfg_obj_asstring(defkey);
	} else if (!key_only)
		fatal("no key for server and no default");

	/*
	 * Get the key's definition.
	 */
	if (key_only)
		DO("get key", cfg_map_get(config, "key", &key));
	else {
		DO("get config key list", cfg_map_get(config, "key", &keys));
		for (elt = cfg_list_first(keys);
		     elt != NULL; 
		     elt = cfg_list_next(elt))
		{
			key = cfg_listelt_value(elt);
			if (strcasecmp(cfg_obj_asstring(cfg_map_getname(key)),
				       keyname) == 0)
				break;
		}
		if (elt == NULL)
			fatal("no key definition for name %s", keyname);
	}
	(void)cfg_map_get(key, "secret", &secretobj);
	(void)cfg_map_get(key, "algorithm", &algorithmobj);
	if (secretobj == NULL || algorithmobj == NULL)
		fatal("key must have algorithm and secret");

	secretstr = cfg_obj_asstring(secretobj);
	algorithm = cfg_obj_asstring(algorithmobj);

	if (strcasecmp(algorithm, "hmac-md5") != 0)
		fatal("unsupported algorithm: %s", algorithm);

	secret.rstart = (unsigned char *)secretarray;
	secret.rend = (unsigned char *)secretarray + sizeof(secretarray);
	DO("decode base64 secret", isccc_base64_decode(secretstr, &secret));
	secret.rend = secret.rstart;
	secret.rstart = (unsigned char *)secretarray;

	/*
	 * Find the port to connect to.
	 */
	if (remoteport != 0)
		;		/* Was set on command line, do nothing. */
	else {
		if (server != NULL)
			(void)cfg_map_get(server, "port", &defport);
		if (defport == NULL && options != NULL)
			(void)cfg_map_get(options, "default-port", &defport);
	}
	if (defport != NULL) {
		remoteport = cfg_obj_asuint32(defport);
		if (remoteport > 65535 || remoteport == 0)
			fatal("port %u out of range", remoteport);
	} else if (remoteport == 0)
		remoteport = NS_CONTROL_PORT;

	if (server != NULL)
		result = cfg_map_get(server, "addresses", &addresses);
	else
		result = ISC_R_NOTFOUND;
	if (result == ISC_R_SUCCESS) {
		for (element = cfg_list_first(addresses);
		     element != NULL;
		     element = cfg_list_next(element))
		{
			isc_sockaddr_t sa;

			address = cfg_listelt_value(element);
			if (!cfg_obj_issockaddr(address)) {
				unsigned int myport;
				const char *name;
				const cfg_obj_t *obj;

				obj = cfg_tuple_get(address, "name");
				name = cfg_obj_asstring(obj);
				obj = cfg_tuple_get(address, "port");
				if (cfg_obj_isuint32(obj)) {
					myport = cfg_obj_asuint32(obj);
					if (myport > ISC_UINT16_MAX ||
					    myport == 0)
						fatal("port %u out of range",
						      myport);
				} else
					myport = remoteport;
				if (nserveraddrs < SERVERADDRS)
					get_addresses(name, (in_port_t) myport);
				else
					fprintf(stderr, "too many address: "
					        "%s: dropped\n", name);
				continue;
			}
			sa = *cfg_obj_assockaddr(address);
			if (isc_sockaddr_getport(&sa) == 0)
				isc_sockaddr_setport(&sa, remoteport);
			if (nserveraddrs < SERVERADDRS)
				serveraddrs[nserveraddrs++] = sa;
			else {
				char socktext[ISC_SOCKADDR_FORMATSIZE];

				isc_sockaddr_format(&sa, socktext,
						    sizeof(socktext));
				fprintf(stderr,
					"too many address: %s: dropped\n",
					socktext);
			}
		}
	}

	if (!local4set && server != NULL) {
		address = NULL;
		cfg_map_get(server, "source-address", &address);
		if (address != NULL) {
			local4 = *cfg_obj_assockaddr(address);
			local4set = ISC_TRUE;
		}
	}
	if (!local4set && options != NULL) {
		address = NULL;
		cfg_map_get(options, "default-source-address", &address);
		if (address != NULL) {
			local4 = *cfg_obj_assockaddr(address);
			local4set = ISC_TRUE;
		}
	}

	if (!local6set && server != NULL) {
		address = NULL;
		cfg_map_get(server, "source-address-v6", &address);
		if (address != NULL) {
			local6 = *cfg_obj_assockaddr(address);
			local6set = ISC_TRUE;
		}
	}
	if (!local6set && options != NULL) {
		address = NULL;
		cfg_map_get(options, "default-source-address-v6", &address);
		if (address != NULL) {
			local6 = *cfg_obj_assockaddr(address);
			local6set = ISC_TRUE;
		}
	}

	*configp = config;
}
Esempio n. 10
0
/*
 * Query or search the SRV RRs for a given name.
 *
 * If dname == NULL then search (as in res_nsearch(3RESOLV), honoring any
 * search list/option), else query (as in res_nquery(3RESOLV)).
 *
 * The output TTL will be the one of the SRV RR with the lowest TTL.
 */
ad_disc_cds_t *
srv_query(res_state state, const char *svc_name, const char *dname,
    ad_disc_ds_t *prefer)
{
	ad_disc_cds_t *cds_res = NULL;
	uchar_t *msg = NULL;
	int len, scnt, maxcnt;

	msg = malloc(NS_MAXMSG);
	if (msg == NULL) {
		logger(LOG_ERR, "Out of memory");
		return (NULL);
	}

	/* query necessary resource records */

	/* Search, querydomain or query */
	if (dname == NULL) {
		dname = "*";
		if (DBG(DNS, 1))  {
			logger(LOG_DEBUG, "Looking for SRV RRs '%s.*'",
			    svc_name);
		}
		len = res_nsearch(state, svc_name, C_IN, T_SRV,
		    msg, NS_MAXMSG);
		if (len < 0) {
			if (DBG(DNS, 0)) {
				logger(LOG_DEBUG,
				    "DNS search for '%s' failed (%s)",
				    svc_name, hstrerror(state->res_h_errno));
			}
			goto errout;
		}
	} else { /* dname != NULL */
		if (DBG(DNS, 1)) {
			logger(LOG_DEBUG, "Looking for SRV RRs '%s.%s' ",
			    svc_name, dname);
		}

		len = res_nquerydomain(state, svc_name, dname, C_IN, T_SRV,
		    msg, NS_MAXMSG);

		if (len < 0) {
			if (DBG(DNS, 0)) {
				logger(LOG_DEBUG, "DNS: %s.%s: %s",
				    svc_name, dname,
				    hstrerror(state->res_h_errno));
			}
			goto errout;
		}
	}

	if (len > NS_MAXMSG) {
		logger(LOG_WARNING,
		    "DNS query %ib message doesn't fit into %ib buffer",
		    len, NS_MAXMSG);
		len = NS_MAXMSG;
	}


	/* parse the reply header */

	cds_res = srv_parse(msg, len, &scnt, &maxcnt);
	if (cds_res == NULL)
		goto errout;

	if (prefer != NULL)
		add_preferred(cds_res, prefer, &scnt, maxcnt);

	get_addresses(cds_res, scnt);

	/* sort list of candidates */
	if (scnt > 1)
		qsort(cds_res, scnt, sizeof (*cds_res),
		    (int (*)(const void *, const void *))srvcmp);

	free(msg);
	return (cds_res);

errout:
	free(msg);
	return (NULL);
}
Esempio n. 11
0
int
main(int argc, char *argv[]) {
    struct sigaction sa;
    char c;
    int option_index = 0;
    
    // Program name
    program_name = strrchr(argv[0], '/');
    if (program_name)
        program_name ++;
    else
        program_name = argv[0];
        
    // Parse command line options
    do {
        c = getopt_long(argc, argv, short_options, long_options, &option_index);

        switch (c) {

        case -1:
            break;
            
        case 'r':
            capture_file = fopen(optarg, "r");
            if (!capture_file) {
                LOGGER(ERROR, "Cannot open file '%s': %s\n", optarg,
                        strerror(errno));
                return EXIT_FAILURE;
                
            }
            break;
            
        case 'l':
            specified_addresses = 1;
            if (parse_addresses(optarg)) {
                LOGGER(ERROR, "Error parsing local addresses\n");
                return EXIT_FAILURE;
                
            }
            
            break;
            
        case 'p':
            port = strdup(optarg);
            break;
            
        case 'f':
            if (!check_format(optarg)) {
                LOGGER(ERROR, "Bad format provided: `%s'\n", optarg);
                return EXIT_FAILURE;
            }
            
            global_options.format = optarg;
            
            break;
            
        case 't':
            global_options.interval = strtoul(optarg, NULL, 10);
            if (interval <= 0 || interval >= MAX_OUTPUT_INTERVAL) {
                LOGGER(ERROR, "Bad interval provided\n");
                return EXIT_FAILURE;
            }
            
            break;
            
        case 'n':
            global_options.iterations = strtol(optarg, NULL, 10);
            if (interval < 0) {
                LOGGER(ERROR, "Bad iterations provided\n");
                return EXIT_FAILURE;
            }
            
            break;
            
        case 'T':
            global_options.threshold = strtol(optarg, NULL, 10) * 1000;
            if (global_options.threshold < 0) {
                LOGGER(ERROR, "Bad threshold provided\n");
                return EXIT_FAILURE;
            }
            
            break;

        case 'd':
            global_options.server = strdup(optarg);
            
            break;
        case 'i':
	        global_options.interface = strdup(optarg);

            break;


        case 'c':
            global_options.is_client = 1;
            break;

        case 's':
            global_options.header = optarg;
            global_options.show_header = 1;
            break;
            
        case 'S':
            global_options.show_header = 0;
            break;
            
        case 'h':
            dump_help(stdout);
            return EXIT_SUCCESS;

        case 'V':
            dump_version(stdout);
            return EXIT_SUCCESS;

        default:
            dump_usage(stderr);
            return EXIT_FAILURE;

        }

    }
    while (c != -1);
    
	if(! global_options.interface) {
        global_options.interface = "any";
	}

    if(global_options.is_client) {
        if(!global_options.server) {
            LOGGER(ERROR, "%s -d destination server is required.\n", argv[0]);
            return 0;
        }
    }
	if(global_options.server) {
		global_options.is_client = 1;
	} 
    if(!port) {
    	LOGGER(ERROR, "%s -p port is required.\n", argv[0]);
        return 0;
   	}

    // Set up signals
    sa.sa_handler = terminate;
    sigemptyset(&sa.sa_mask);
    sigaddset(&sa.sa_mask, SIGTERM);
    sigaddset(&sa.sa_mask, SIGINT);
    sa.sa_flags = 0;
    sa.sa_restorer = NULL;
    
    sigaction(SIGTERM, &sa, NULL);
    sigaction(SIGINT, &sa, NULL);
    
    // Get local addresses
    if (!specified_addresses && get_addresses() != 0)
        return EXIT_FAILURE;
    
    // Operations timestamp
    time(&timestamp);
    
    // Stats
    init_stats();
    
    if (capture_file) {
        output_offline_start(&global_options);

        offline_capture(capture_file);
        
        fclose(capture_file);
        
    }
    else {
        // Fire up capturing thread
        pthread_create(&capture_thread_id, NULL, capture, NULL);
        
		if(!global_options.threshold) {
        // Options thread
        	pthread_create(&output_thread_id, NULL, output_thread, &global_options);
        	pthread_kill(output_thread_id, SIGINT);
		}
        
        pthread_join(capture_thread_id, NULL);
        
    }
        
    free_stats();
    free_addresses();
	
	free(global_options.server);
    
    return EXIT_SUCCESS;

}