/*
* pptpd.c
*
* Grabs any command line argument and processes any further options in
* the pptpd config file, before throwing over to pptpmanager.c.
*
* $Id: pptpd.c,v 1.18 2006/09/04 23:17:25 quozl Exp $
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#ifdef __linux__
#define _GNU_SOURCE 1 /* strdup() prototype, broken arpa/inet.h */
#endif
#ifdef __svr4__
#define __EXTENSIONS__ 1 /* strdup() prototype */
#endif
#ifdef __sgi__
#define _XOPEN_SOURCE 500 /* strdup() prototype */
#endif
#include "our_syslog.h"
#include "our_getopt.h"
#include <fcntl.h>
#include <netdb.h>
#include <signal.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <sys/wait.h>
#include <sys/stat.h>
#include <unistd.h>
#include "configfile.h"
#include "defaults.h"
#include "compat.h"
#include "pptpmanager.h"
#ifdef CONFIG_NETtel
#include <linux/ledman.h>
#endif
/* command line arg variables */
char *ppp_binary = NULL;
char *pppdoptstr = NULL;
char *speedstr = NULL;
char *bindaddr = NULL;
#ifdef BCRELAY
char *bcrelay = NULL;
#endif
int pptp_debug = 0;
int pptp_noipparam = 0;
int pptp_logwtmp = 0;
int pptp_delegate = 0;
int pptp_stimeout = STIMEOUT_DEFAULT;
int pptp_connections = CONNECTIONS_DEFAULT;
/* Local prototypes */
static void processIPStr(int type, char *ipstr);
#ifndef HAVE_DAEMON
static void my_daemon(int argc, char **argv);
#endif
static void log_pid(char *pid_file);
static char *lookup(char *);
#ifdef BCRELAY
static void launch_bcrelay();
static pid_t bcrelayfork;
#endif
static void showusage(char *prog)
{
printf("\npptpd v%s\n", VERSION);
printf("Usage: pptpd [options], where options are:\n\n");
#ifdef BCRELAY
printf(" [-b] [--bcrelay if] Use broadcast relay for broadcasts comming from.\n");
printf(" the specified interface (default is eth1).\n");
#endif
printf(" [-c] [--conf file] Specifies the config file to read default\n");
printf(" settings from (default is %s).\n", PPTPD_CONFIG_FILE_DEFAULT);
printf(" [-d] [--debug] Turns on debugging (to syslog).\n");
printf(" [-e] [--ppp file] Use alternate pppd binary, default %s.\n", PPP_BINARY);
printf(" [-f] [--fg] Run in foreground.\n");
printf(" [-h] [--help] Displays this help message.\n");
printf(" [-i] [--noipparam] Suppress the passing of the client's IP address\n");
printf(" to PPP, which is done by default otherwise.\n");
printf(" [-l] [--listen x.x.x.x] Specifies IP of local interface to listen to.\n");
#ifdef BSDUSER_PPP
printf(" [-o] [--option file] Specifies the userland PPP system label to use\n");
printf(" (default is pptp).\n");
#else
printf(" [-o] [--option file] Specifies the PPP options file to use\n");
printf(" (default is /etc/ppp/options).\n");
#endif
printf(" [-p] [--pidfile file] Specifies the file to write the process ID to\n");
printf(" (default is %s).\n",PIDFILE_DEFAULT);
#if !defined(BSDUSER_PPP)
printf(" [-s] [--speed baud] Specifies the baud speed for the PPP daemon\n");
printf(" (default is %s).\n",PPP_SPEED_DEFAULT);
#endif
printf(" [-t] [--stimeout seconds] Specifies the timeout for the first packet. This is a DOS protection\n");
printf(" (default is %s).\n",STIMEOUT_DEFAULT);
printf(" [-v] [--version] Displays the pptpd version number.\n");
printf(" [-w] [--logwtmp] Update wtmp as users login.\n");
printf(" [-C] [--connections n] Limit on number of connections.\n");
printf(" [-D] [--delegate] Delegate IP allocation to pppd.\n");
printf("\n\nLogs and debugging go to syslog as DAEMON.");
printf("\n\nCommand line options will override any default settings and any settings\n");
printf("specified in the config file (default config file: %s).\n\n", PPTPD_CONFIG_FILE_DEFAULT);
}
static void showversion()
{
printf("pptpd v%s\n", VERSION);
}
int main(int argc, char **argv)
{
/* command line options */
int c;
/* function-local options */
int foreground = FALSE;
char *pid_file = NULL;
/* config file */
char *configFile = NULL;
/* config file parsing temp strings */
char tmp[MAX_CONFIG_STRING_SIZE], *tmpstr;
/* open a connection to the syslog daemon */
openlog("pptpd", LOG_PID, PPTP_FACILITY);
/* process command line options */
while (1) {
int option_index = 0;
#ifdef BCRELAY
char *optstring = "b:c:de:fhil:o:p:s:t:vwC:D";
#else
char *optstring = "c:de:fhil:o:p:s:t:vwC:D";
#endif
static struct option long_options[] =
{
#ifdef BCRELAY
{"bcrelay", 1, 0, 0},
#endif
{"conf", 1, 0, 0},
{"debug", 0, 0, 0},
{"ppp", 1, 0, 0},
{"fg", 0, 0, 0},
{"help", 0, 0, 0},
{"noipparam", 0, 0, 0},
{"listen", 1, 0, 0},
{"option", 1, 0, 0},
{"pidfile", 1, 0, 0},
{"speed", 1, 0, 0},
{"stimeout", 1, 0, 0},
{"version", 0, 0, 0},
{"logwtmp", 0, 0, 0},
{"connections", 1, 0, 0},
{"delegate", 0, 0, 0},
{0, 0, 0, 0}
};
c = getopt_long(argc, argv, optstring, long_options, &option_index);
if (c == -1)
break;
/* convert long options to short form */
if (c == 0)
#ifdef BCRELAY
c = "bcdefhilopstvwCD"[option_index];
#else
c = "cdefhilopstvwCD"[option_index];
#endif
switch (c) {
#ifdef BCRELAY
case 'b': /* --bcrelay */
if (bcrelay) free(bcrelay);
bcrelay = strdup(optarg);
break;
#endif
case 'l': /* --listen */
tmpstr = lookup(optarg);
if (!tmpstr) {
syslog(LOG_ERR, "MGR: Invalid listening address: %s!", optarg);
return 1;
}
if (bindaddr) free(bindaddr);
bindaddr = strdup(tmpstr);
break;
case 'h': /* --help */
showusage(argv[0]);
return 0;
case 'i': /* --noipparam */
pptp_noipparam = TRUE;
break;
case 'e': /* --ppp */
if (ppp_binary) free(ppp_binary);
ppp_binary = strdup(optarg);
break;
case 'd': /* --debug */
pptp_debug = TRUE;
break;
case 'f': /* --fg */
foreground = TRUE;
break;
case 'v': /* --version */
showversion();
return 0;
case 'w': /* --logwtmp */
pptp_logwtmp = TRUE;
break;
case 'C': /* --connections */
pptp_connections = atoi(optarg);
break;
case 'D': /* --delegate */
pptp_delegate = TRUE;
break;
case 'o': /* --option */
if (pppdoptstr) free(pppdoptstr);
pppdoptstr = strdup(optarg);
break;
case 'p': /* --pidfile */
if (pid_file) free(pid_file);
pid_file = strdup(optarg);
break;
case 's': /* --speed */
if (speedstr) free(speedstr);
speedstr = strdup(optarg);
break;
case 't': /* --stimeout */
pptp_stimeout = atoi(optarg);
break;
case 'c': /* --conf */
{
FILE *f;
if (!(f = fopen(optarg, "r"))) {
syslog(LOG_ERR, "MGR: Config file not found!");
return 1;
}
fclose(f);
if(configFile) free(configFile);
configFile = strdup(optarg);
break;
}
default:
showusage(argv[0]);
return 1;
}
}
/* Now that we have all the command line args.. lets open the
* conf file and add anything else (remembering not to override
* anything since the command line has more privilages :-)
*/
if (!configFile)
configFile = strdup(PPTPD_CONFIG_FILE_DEFAULT);
if (read_config_file(configFile, CONNECTIONS_KEYWORD, tmp) > 0) {
pptp_connections = atoi(tmp);
if (pptp_connections <= 0)
pptp_connections = CONNECTIONS_DEFAULT;
}
slot_init(pptp_connections);
if (!pptp_debug && read_config_file(configFile, DEBUG_KEYWORD, tmp) > 0)
pptp_debug = TRUE;
#ifdef BCRELAY
if (!bcrelay && read_config_file(configFile, BCRELAY_KEYWORD, tmp) > 0)
bcrelay = strdup(tmp);
#endif
if (!pptp_stimeout && read_config_file(configFile, STIMEOUT_KEYWORD, tmp) > 0) {
pptp_stimeout = atoi(tmp);
if (pptp_stimeout <= 0)
pptp_stimeout = STIMEOUT_DEFAULT;
}
if (!pptp_noipparam && read_config_file(configFile, NOIPPARAM_KEYWORD, tmp) > 0) {
pptp_noipparam = TRUE;
}
if (!bindaddr && read_config_file(configFile, LISTEN_KEYWORD, tmp) > 0) {
tmpstr = lookup(tmp);
if(!tmpstr) {
syslog(LOG_ERR, "MGR: Invalid listening address: %s!", tmp);
return 1;
}
bindaddr = strdup(tmpstr);
}
if (!speedstr && read_config_file(configFile, SPEED_KEYWORD, tmp) > 0)
speedstr = strdup(tmp);
if (!pppdoptstr && read_config_file(configFile, PPPD_OPTION_KEYWORD, tmp) > 0) {
pppdoptstr = strdup(tmp);
}
if (!ppp_binary && read_config_file(configFile, PPP_BINARY_KEYWORD, tmp) > 0) {
ppp_binary = strdup(tmp);
}
if (!pptp_logwtmp && read_config_file(configFile, LOGWTMP_KEYWORD, tmp) > 0) {
pptp_logwtmp = TRUE;
}
if (!pptp_delegate && read_config_file(configFile, DELEGATE_KEYWORD, tmp) > 0) {
pptp_delegate = TRUE;
}
if (!pid_file)
pid_file = strdup((read_config_file(configFile, PIDFILE_KEYWORD,
tmp) > 0) ? tmp : PIDFILE_DEFAULT);
if (!pptp_delegate) {
/* NOTE: remote then local, reason can be seen at the end of processIPStr */
/* grab the remoteip string from the config file */
if (read_config_file(configFile, REMOTEIP_KEYWORD, tmp) <= 0) {
/* use "smart" defaults */
strlcpy(tmp, DEFAULT_REMOTE_IP_LIST, sizeof(tmp));
}
processIPStr(REMOTE, tmp);
/* grab the localip string from the config file */
if (read_config_file(configFile, LOCALIP_KEYWORD, tmp) <= 0) {
/* use "smart" defaults */
strlcpy(tmp, DEFAULT_LOCAL_IP_LIST, sizeof(tmp));
}
processIPStr(LOCAL, tmp);
}
free(configFile);
/* if not yet set, adopt default PPP binary path */
if (!ppp_binary) ppp_binary = strdup(PPP_BINARY);
/* check that the PPP binary is executable */
if (access(ppp_binary, X_OK) < 0) {
syslog(LOG_ERR, "MGR: PPP binary %s not executable",
ppp_binary);
return 1;
}
/* check that the PPP options file is readable */
/* If -o or --option is being used to specify BSD userland
PPP system label, it makes no sense to check the option string to
see if it is the name of a readable file. */
#if !defined(BSDUSER_PPP)
if (pppdoptstr && access(pppdoptstr, R_OK) < 0) {
syslog(LOG_ERR, "MGR: PPP options file %s not readable",
pppdoptstr);
return 1;
}
#endif
#ifdef BCRELAY
/* check that the bcrelay binary is executable */
if (bcrelay && access(BCRELAY_BIN, X_OK) < 0) {
syslog(LOG_ERR, "MGR: bcrelay binary %s not executable",
BCRELAY_BIN);
return 1;
}
#endif
if (!foreground) {
#if HAVE_DAEMON
closelog();
freopen("/dev/null", "r", stdin);
daemon(0, 0);
/* returns to child only */
/* pid will have changed */
openlog("pptpd", LOG_PID, PPTP_FACILITY);
#else /* !HAVE_DAEMON */
my_daemon(argc, argv);
/* returns to child if !HAVE_FORK
* never returns if HAVE_FORK (re-execs with -f)
*/
#endif
}
#ifdef BCRELAY
if (bcrelay) {
syslog(LOG_DEBUG, "CTRL: BCrelay incoming interface is %s", bcrelay);
/* Launch BCrelay */
#ifndef HAVE_FORK
switch(bcrelayfork = vfork()){
#else
switch(bcrelayfork = fork()){
#endif
case -1: /* fork() error */
syslog(LOG_ERR, "CTRL: Error forking to exec bcrelay");
_exit(1);
case 0: /* child */
syslog(LOG_DEBUG, "CTRL (BCrelay Launcher): Launching BCrelay with pid %i", bcrelayfork);
launch_bcrelay();
syslog(LOG_ERR, "CTRL (BCrelay Launcher): Failed to launch BCrelay.");
_exit(1);
}
} /* End bcrelay */
#endif
#ifdef CONFIG_NETtel
/* turn the NETtel VPN LED on */
ledman_cmd(LEDMAN_CMD_ON, LEDMAN_VPN);
#endif
/* after we have our final pid... */
log_pid(pid_file);
/* manage connections until SIGTERM */
pptp_manager(argc, argv);
#ifdef BCRELAY
if (bcrelayfork > 0) {
syslog(LOG_DEBUG, "CTRL: Closing child BCrelay with pid %i", bcrelayfork);
kill(bcrelayfork, SIGTERM);
}
#endif
slot_free();
return 0;
}
static void log_pid(char *pid_file) {
FILE *f;
pid_t pid;
pid = getpid();
if ((f = fopen(pid_file, "w")) == NULL) {
syslog(LOG_ERR, "PPTPD: failed to open(%s), errno=%d\n",
pid_file, errno);
return;
}
fprintf(f, "%d\n", pid);
fclose(f);
}
#ifndef HAVE_DAEMON
static void my_daemon(int argc, char **argv)
{
#ifndef HAVE_FORK
/* need to use vfork - eg, uClinux */
char **new_argv;
int pid;
extern char **environ;
int fdr;
new_argv = malloc((argc + 2) * sizeof(char **));
fdr = open("/dev/null", O_RDONLY);
syslog(LOG_INFO, "MGR: Option parse OK, re-execing as daemon");
fflush(stderr);
if ((pid = vfork()) == 0) {
if (fdr != 0) { dup2(fdr, 0); close(fdr); }
SETSIDPGRP();
chdir("/");
umask(0);
memcpy(new_argv + 1, argv, (argc + 1) * sizeof(char **));
new_argv[0] = PPTPD_BIN;
new_argv[1] = "-f";
execve(PPTPD_BIN, new_argv, environ);
_exit(1);
} else if (pid > 0) {
exit(0);
} else {
syslog_perror("vfork");
exit(1);
}
#else
int pid;
closelog();
if ((pid = fork()) < 0) {
syslog_perror("fork");
exit(1);
} else if (pid)
exit(0);
freopen("/dev/null", "r", stdin);
SETSIDPGRP();
chdir("/");
umask(0);
/* pid will have changed */
openlog("pptpd", LOG_PID, PPTP_FACILITY);
#endif
}
#endif
/* added for hostname/address lookup -tmk
* returns NULL if not a valid hostname
*/
static char *lookup(char *hostname)
{
struct hostent *ent;
struct in_addr hst_addr;
/* Try to parse IP directly */
if (inet_addr(hostname) != -1)
return hostname;
/* Else lookup hostname, return NULL if it fails */
if ((ent = gethostbyname(hostname)) == NULL)
return NULL;
/* That worked, print it back as a dotted quad. */
memcpy(&hst_addr.s_addr, ent->h_addr, ent->h_length);
return inet_ntoa(hst_addr);
}
#define DEBUG_IP_PARSER 0
/* Return the address or NULL if not valid */
static char *validip(char *hostname)
{
/* Try to parse IP directly */
if (inet_addr(hostname) != -1)
return hostname;
else
return NULL;
}
/* Check if it's a valid IP range */
static int isIpRange(char *str)
{
int dashes = 0;
int dots = 0;
#if DEBUG_IP_PARSER
syslog(LOG_DEBUG, "MGR: Checking if %s is a valid IP range", str);
#endif
do {
if (*str == '-')
dashes++;
else if (*str == '.')
dots++;
else if (!strchr("0123456789", *str)) {
#if DEBUG_IP_PARSER
syslog(LOG_DEBUG, "MGR: Not an IP range: character %c is not valid", *str);
#endif
return 0;
}
} while (*++str);
#if DEBUG_IP_PARSER
syslog(LOG_DEBUG, "MGR: Dashes = %d (wanted: 1), Dots = %d (wanted: 4)", dashes, dots);
#endif
return (dashes == 1 && dots == 3);
}
/* process a type 0 (LOCAL) or type 1 (REMOTE) IP string */
static void processIPStr(int type, char *ipstr)
{
int pos;
char *tmpstr;
/* char tmpstr2[20]; xxx.xxx.xxx.xxx-xxx (largest we can get) */
char tmpstr2[128]; /* allow hostnames */
char *tmpstr3;
char tmpstr5[16];
char *tmpstr6;
char *tmpstr7;
int num;
char ipa[8]; /* xxx-xxx (largest we can get) */
char ipb[8];
char ipc[8];
char ipd[8];
char ip_pre[13]; /* xxx.xxx.xxx. (largest we can get) */
char ip_post[13];
char ipl[4];
char ipu[4];
int bail = FALSE; /* so we know when to stop formatting the ip line */
int lower, upper, n;
num = 0;
while (!bail) {
if ((tmpstr = strchr(ipstr, ',')) == NULL) {
/* last (or only) entry reached */
strlcpy(tmpstr2, ipstr, sizeof(tmpstr2));
bail = TRUE;
} else {
pos = tmpstr - ipstr;
ipstr[pos] = '\0';
strlcpy(tmpstr2, ipstr, sizeof(tmpstr2));
ipstr = tmpstr + 1;
}
#if DEBUG_IP_PARSER
syslog(LOG_DEBUG, "MGR: Parsing segment: %s", tmpstr2);
#endif
if (!isIpRange(tmpstr2)) {
/* We got a normal IP
* Check if the IP address is valid, use it if so
*/
if ((tmpstr7 = lookup(tmpstr2)) == NULL) {
syslog(LOG_ERR, "MGR: Bad IP address (%s) in config file!", tmpstr2);
exit(1);
}
if (num == pptp_connections) {
syslog(LOG_WARNING, "MGR: connections limit (%d) reached, extra IP addresses ignored", pptp_connections);
return;
}
#if DEBUG_IP_PARSER
syslog(LOG_DEBUG, "MGR: Setting IP %d = %s", num, tmpstr7);
#endif
if (type == LOCAL)
slot_set_local(num, tmpstr7);
else
slot_set_remote(num, tmpstr7);
num++;
} else {
/* Got a range;
* eg. 192.168.0.234-238
* or (thanx Kev! :-).. i thought i was finished :-)
* 192.168-178.1.231
*/
/* lose the "."'s */
while ((tmpstr3 = strchr(tmpstr2, '.')) != NULL) {
pos = tmpstr3 - tmpstr2;
tmpstr2[pos] = ' ';
}
if ((tmpstr3 = strchr(tmpstr2, '-')) == NULL ||
strchr(tmpstr3 + 1, '-') != NULL) {
syslog(LOG_ERR, "MGR: Confused in IP parse routines (multiple hyphens)");
continue;
}
/* should be left with "192 168 0 234-238"
* or 192 168-178 1 231
*/
sscanf(tmpstr2, "%7s %7s %7s %7s", ipa, ipb, ipc, ipd);
if ((tmpstr6 = strchr(ipd, '-')) != NULL) {
pos = tmpstr6 - ipd;
ipd[pos] = ' ';
sscanf(ipd, "%3s %3s", ipl, ipu);
#if DEBUG_IP_PARSER
syslog(LOG_DEBUG, "MGR: (lower upper) = (%s %s)", ipl, ipu);
#endif
lower = atoi(ipl);
upper = atoi(ipu);
#if DEBUG_IP_PARSER
syslog(LOG_DEBUG, "MGR: Range = %d to %d on 4th segment", lower, upper);
#endif
sprintf(ip_pre, "%.3s.%.3s.%.3s.", ipa, ipb, ipc);
ip_post[0] = '\0';
#if DEBUG_IP_PARSER
syslog(LOG_DEBUG, "MGR: Pre = %s Post = %s", ip_pre, ip_post);
#endif
} else if ((tmpstr6 = strchr(ipc, '-')) != NULL) {
pos = tmpstr6 - ipc;
ipc[pos] = ' ';
sscanf(ipc, "%3s %3s", ipl, ipu);
#if DEBUG_IP_PARSER
syslog(LOG_DEBUG, "MGR: (lower upper) = (%s %s)", ipl, ipu);
#endif
lower = atoi(ipl);
upper = atoi(ipu);
#if DEBUG_IP_PARSER
syslog(LOG_DEBUG, "MGR: Range = %d to %d on 3rd segment", lower, upper);
#endif
sprintf(ip_pre, "%.3s.%.3s.", ipa, ipb);
sprintf(ip_post, ".%.3s", ipd);
#if DEBUG_IP_PARSER
syslog(LOG_DEBUG, "MGR: Pre = %s Post = %s", ip_pre, ip_post);
#endif
} else if ((tmpstr6 = strchr(ipb, '-')) != NULL) {
pos = tmpstr6 - ipb;
ipb[pos] = ' ';
sscanf(ipb, "%3s %3s", ipl, ipu);
#if DEBUG_IP_PARSER
syslog(LOG_DEBUG, "MGR: (lower upper) = (%s %s)", ipl, ipu);
#endif
lower = atoi(ipl);
upper = atoi(ipu);
#if DEBUG_IP_PARSER
syslog(LOG_DEBUG, "MGR: Range = %d to %d on 2nd segment", lower, upper);
#endif
sprintf(ip_pre, "%.3s.", ipa);
sprintf(ip_post, ".%.3s.%.3s", ipc, ipd);
#if DEBUG_IP_PARSER
syslog(LOG_DEBUG, "MGR: Pre = %s Post = %s", ip_pre, ip_post);
#endif
} else if ((tmpstr6 = strchr(ipa, '-')) != NULL) {
pos = tmpstr6 - ipa;
ipa[pos] = ' ';
sscanf(ipa, "%3s %3s", ipl, ipu);
#if DEBUG_IP_PARSER
syslog(LOG_DEBUG, "MGR: (lower upper) = (%s %s)", ipl, ipu);
#endif
lower = atoi(ipl);
upper = atoi(ipu);
#if DEBUG_IP_PARSER
syslog(LOG_DEBUG, "MGR: Range = %d to %d on 1st segment", lower, upper);
#endif
ip_pre[0] = '\0';
sprintf(ip_post, ".%.3s.%.3s.%.3s", ipb, ipc, ipd);
#if DEBUG_IP_PARSER
syslog(LOG_DEBUG, "MGR: Pre = %s Post = %s", ip_pre, ip_post);
#endif
} else {
syslog(LOG_ERR, "MGR: Confused in IP parse routines (lost hyphen)");
continue;
}
for (n = lower; n <= upper; n++) {
sprintf(tmpstr5, "%s%d%s", ip_pre, n, ip_post);
/* Check if the ip address is valid */
if ((tmpstr7 = validip(tmpstr5)) == NULL) {
syslog(LOG_ERR, "MGR: Bad IP address (%s) in config file!", tmpstr5);
exit(1);
}
if (num == pptp_connections) {
syslog(LOG_WARNING, "MGR: connections limit (%d) reached, extra IP addresses ignored", pptp_connections);
return;
}
#if DEBUG_IP_PARSER
syslog(LOG_DEBUG, "MGR: Setting IP %d = %s", num, tmpstr7);
#endif
if (type == LOCAL)
slot_set_local(num, tmpstr7);
else
slot_set_remote(num, tmpstr7);
num++;
}
}
}
if (num == 1 && type == LOCAL && pptp_connections > 1) {
#if DEBUG_IP_PARSER
syslog(LOG_DEBUG, "MGR: Setting all %d local IPs to %s", pptp_connections, slot_get_local(0));
#endif
for (n = 1; n < pptp_connections; n++)
slot_set_local(n, slot_get_local(0));
} else if (pptp_connections > num) {
syslog(LOG_INFO, "MGR: Maximum of %d connections reduced to %d, not enough IP addresses given",
pptp_connections, num);
pptp_connections = num;
}
}
#ifdef BCRELAY
/* launch_bcrelay
* Launches broadcast relay. Broadcast relay is responsible for relaying broadcasts to the clients
* retn: 0 on success, -1 on failure.
*/
static void launch_bcrelay() {
char *bcrelay_argv[8];
int an = 0;
if (bcrelay) {
syslog(LOG_DEBUG, "MGR: BCrelay incoming interface is %s", bcrelay);
syslog(LOG_DEBUG, "MGR: BCrelay outgoing interface is regexp ppp[0-9].*");
bcrelay_argv[an++] = BCRELAY_BIN;
bcrelay_argv[an++] = "-i";
bcrelay_argv[an++] = bcrelay;
bcrelay_argv[an++] = "-o";
bcrelay_argv[an++] = "ppp[0-9].*";
if (!pptp_debug) {
bcrelay_argv[an++] = "-n";
}
bcrelay_argv[an++] = NULL;
execvp(bcrelay_argv[0], bcrelay_argv);
}
}
#endif
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