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file.c
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/*
* Layer Two Tunnelling Protocol Daemon
* Copyright (C) 1998 Adtran, Inc.
* Copyright (C) 2002 Jeff McAdams
*
* Mark Spencer
*
* This software is distributed under the terms
* of the GPL, which you should have received
* along with this source.
*
* File format handling
*
*/
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <stdlib.h>
#include <netdb.h>
#include <netinet/in.h>
#include <time.h>
#include <sys/types.h>
#include <sys/socket.h>
#include "l2tp.h"
struct lns *lnslist;
struct lac *laclist;
struct lns *deflns;
struct lac *deflac;
struct global gconfig;
char filerr[STRLEN];
int parse_config (FILE *);
struct keyword words[];
int init_config ()
{
FILE *f;
int returnedValue;
gconfig.port = UDP_LISTEN_PORT;
gconfig.ipaddr.listenaddr = htonl(INADDR_ANY); /* Default is to bind (listen) to all interfaces */
gconfig.debug_avp = 0;
gconfig.debug_network = 0;
gconfig.packet_dump = 0;
gconfig.debug_tunnel = 0;
gconfig.debug_state = 0;
lnslist = NULL;
laclist = NULL;
deflac = (struct lac *) malloc (sizeof (struct lac));
f = fopen (gconfig.configfile, "r");
if (!f)
{
f = fopen (gconfig.altconfigfile, "r");
if (f)
{
l2tp_log (LOG_WARNING, "%s: Using old style config files %s and %s\n",
__FUNCTION__, gconfig.altconfigfile, gconfig.altauthfile);
strncpy (gconfig.authfile, gconfig.altauthfile,
sizeof (gconfig.authfile));
}
else
{
l2tp_log (LOG_CRIT, "%s: Unable to open config file %s or %s\n",
__FUNCTION__, gconfig.configfile, gconfig.altconfigfile);
return -1;
}
}
returnedValue = parse_config (f);
fclose (f);
return (returnedValue);
filerr[0] = 0;
}
struct iprange *set_range (char *word, char *value, struct iprange *in)
{
char *c, *d = NULL, *e = NULL;
struct iprange *ipr, *p;
struct hostent *hp;
int count = 0;
c = strchr (value, '-');
if (c)
{
d = c + 1;
*c = 0;
while ((c >= value) && (*c < 33))
*(c--) = 0;
while (*d && (*d < 33))
d++;
}
if (!strlen (value) || (c && !strlen (d)))
{
snprintf (filerr, sizeof (filerr),
"format is '%s <host or ip> - <host or ip>'\n", word);
return NULL;
}
ipr = (struct iprange *) malloc (sizeof (struct iprange));
ipr->next = NULL;
hp = gethostbyname (value);
if (!hp)
{
snprintf (filerr, sizeof (filerr), "Unknown host %s\n", value);
free (ipr);
return NULL;
}
bcopy (hp->h_addr, &ipr->start, sizeof (unsigned int));
if (c)
{
e = d;
while(*e != '\0') {
if (*e++ == '.')
count++;
}
if (count != 3) {
char ip_hi[16];
strcpy(ip_hi, value);
e = strrchr(ip_hi, '.')+1;
// Copy the last field + null terminator
strcpy(e, d);
d = ip_hi;
}
hp = gethostbyname (d);
if (!hp)
{
snprintf (filerr, sizeof (filerr), "Unknown host %s\n", d);
free (ipr);
return NULL;
}
bcopy (hp->h_addr, &ipr->end, sizeof (unsigned int));
}
else
ipr->end = ipr->start;
if (ntohl (ipr->start) > ntohl (ipr->end))
{
snprintf (filerr, sizeof (filerr), "start is greater than end!\n");
free (ipr);
return NULL;
}
if (word[0] == 'n')
ipr->sense = SENSE_DENY;
else
ipr->sense = SENSE_ALLOW;
p = in;
if (p)
{
while (p->next)
p = p->next;
p->next = ipr;
return in;
}
else
return ipr;
}
struct lns *new_lns ()
{
struct lns *tmp;
tmp = (struct lns *) malloc (sizeof (struct lns));
if (!tmp)
{
l2tp_log (LOG_CRIT, "%s: Unable to allocate memory for new LNS\n",
__FUNCTION__);
return NULL;
}
tmp->next = NULL;
tmp->exclusive = 0;
tmp->localaddr = 0;
tmp->tun_rws = DEFAULT_RWS_SIZE;
tmp->call_rws = DEFAULT_RWS_SIZE;
tmp->hbit = 0;
tmp->lbit = 0;
tmp->authpeer = 0;
tmp->authself = -1;
tmp->authname[0] = 0;
tmp->peername[0] = 0;
tmp->hostname[0] = 0;
tmp->entname[0] = 0;
tmp->range = NULL;
tmp->assign_ip = 1; /* default to 'yes' */
tmp->lacs = NULL;
tmp->passwdauth = 0;
tmp->pap_require = 0;
tmp->pap_refuse = 0;
tmp->chap_require = 0;
tmp->chap_refuse = 0;
tmp->idle = 0;
tmp->pridns = 0;
tmp->secdns = 0;
tmp->priwins = 0;
tmp->secwins = 0;
tmp->proxyarp = 0;
tmp->proxyauth = 0;
tmp->challenge = 0;
tmp->debug = 0;
tmp->pppoptfile[0] = 0;
tmp->t = NULL;
return tmp;
}
struct lac *new_lac ()
{
struct lac *tmp;
tmp = (struct lac *) malloc (sizeof (struct lac));
if (!tmp)
{
l2tp_log (LOG_CRIT, "%s: Unable to allocate memory for lac entry!\n",
__FUNCTION__);
return NULL;
}
tmp->next = NULL;
tmp->rsched = NULL;
tmp->localaddr = 0;
tmp->remoteaddr = 0;
tmp->lns = 0;
tmp->tun_rws = DEFAULT_RWS_SIZE;
tmp->call_rws = DEFAULT_RWS_SIZE;
tmp->hbit = 0;
tmp->lbit = 0;
tmp->authpeer = 0;
tmp->authself = -1;
tmp->authname[0] = 0;
tmp->peername[0] = 0;
tmp->hostname[0] = 0;
tmp->entname[0] = 0;
tmp->pap_require = 0;
tmp->pap_refuse = 0;
tmp->chap_require = 0;
tmp->chap_refuse = 0;
tmp->t = NULL;
tmp->redial = 0;
tmp->rtries = 0;
tmp->rmax = 0;
tmp->challenge = 0;
tmp->autodial = 0;
tmp->rtimeout = 30;
tmp->active = 0;
tmp->debug = 0;
tmp->pppoptfile[0] = 0;
tmp->defaultroute = 0;
return tmp;
}
int yesno (char *value)
{
if (!strcasecmp (value, "yes") || !strcasecmp (value, "y") ||
!strcasecmp (value, "true"))
return 1;
else if (!strcasecmp (value, "no") || !strcasecmp (value, "n") ||
!strcasecmp (value, "false"))
return 0;
else
return -1;
}
int set_boolean (char *word, char *value, int *ptr)
{
int val;
#ifdef DEBUG_FILE
l2tp_log (LOG_DEBUG, "set_%s: %s flag to '%s'\n", word, word, value);
#endif /* ; */
if ((val = yesno (value)) < 0)
{
snprintf (filerr, sizeof (filerr), "%s must be 'yes' or 'no'\n",
word);
return -1;
}
*ptr = val;
return 0;
}
int set_int (char *word, char *value, int *ptr)
{
int val;
#ifdef DEBUG_FILE
l2tp_log (LOG_DEBUG, "set_%s: %s flag to '%s'\n", word, word, value);
#endif /* ; */
if ((val = atoi (value)) < 0)
{
snprintf (filerr, sizeof (filerr), "%s must be a number\n", word);
return -1;
}
*ptr = val;
return 0;
}
int set_string (char *word, char *value, char *ptr, int len)
{
#ifdef DEBUG_FILE
l2tp_log (LOG_DEBUG, "set_%s: %s flag to '%s'\n", word, word, value);
#endif /* ; */
strncpy (ptr, value, len);
return 0;
}
int set_port (char *word, char *value, int context, void *item)
{
switch (context & ~CONTEXT_DEFAULT)
{
case CONTEXT_GLOBAL:
#ifdef DEBUG_FILE
l2tp_log (LOG_DEBUG, "set_port: Setting global port number to %s\n",
value);
#endif
set_int (word, value, &(((struct global *) item)->port));
break;
default:
snprintf (filerr, sizeof (filerr), "'%s' not valid in this context\n",
word);
return -1;
}
return 0;
}
int set_rtimeout (char *word, char *value, int context, void *item)
{
if (atoi (value) < 1)
{
snprintf (filerr, sizeof (filerr),
"rtimeout value must be at least 1\n");
return -1;
}
switch (context & ~CONTEXT_DEFAULT)
{
case CONTEXT_LAC:
#ifdef DEBUG_FILE
l2tp_log (LOG_DEBUG, "set_rtimeout: Setting redial timeout to %s\n",
value);
#endif
set_int (word, value, &(((struct lac *) item)->rtimeout));
break;
default:
snprintf (filerr, sizeof (filerr), "'%s' not valid in this context\n",
word);
return -1;
}
return 0;
}
int set_rws (char *word, char *value, int context, void *item)
{
if (atoi (value) < -1)
{
snprintf (filerr, sizeof (filerr),
"receive window size must be at least -1\n");
return -1;
}
switch (context & ~CONTEXT_DEFAULT)
{
case CONTEXT_LAC:
if (word[0] == 'c')
set_int (word, value, &(((struct lac *) item)->call_rws));
if (word[0] == 't')
{
set_int (word, value, &(((struct lac *) item)->tun_rws));
if (((struct lac *) item)->tun_rws < 1)
{
snprintf (filerr, sizeof (filerr),
"receive window size for tunnels must be at least 1\n");
return -1;
}
}
break;
case CONTEXT_LNS:
if (word[0] == 'c')
set_int (word, value, &(((struct lns *) item)->call_rws));
if (word[0] == 't')
{
set_int (word, value, &(((struct lns *) item)->tun_rws));
if (((struct lns *) item)->tun_rws < 1)
{
snprintf (filerr, sizeof (filerr),
"receive window size for tunnels must be at least 1\n");
return -1;
}
}
break;
default:
snprintf (filerr, sizeof (filerr), "'%s' not valid in this context\n",
word);
return -1;
}
return 0;
}
int set_rmax (char *word, char *value, int context, void *item)
{
if (atoi (value) < 1)
{
snprintf (filerr, sizeof (filerr), "rmax value must be at least 1\n");
return -1;
}
switch (context & ~CONTEXT_DEFAULT)
{
case CONTEXT_LAC:
#ifdef DEBUG_FILE
l2tp_log (LOG_DEBUG, "set_rmax: Setting max redials to %s\n", value);
#endif
set_int (word, value, &(((struct lac *) item)->rmax));
break;
default:
snprintf (filerr, sizeof (filerr), "'%s' not valid in this context\n",
word);
return -1;
}
return 0;
}
int set_authfile (char *word, char *value, int context, void *item)
{
if (!strlen (value))
{
snprintf (filerr, sizeof (filerr),
"no filename specified for authentication\n");
return -1;
}
switch (context & ~CONTEXT_DEFAULT)
{
case CONTEXT_GLOBAL:
#ifdef DEBUG_FILE
l2tp_log (LOG_DEBUG, "set_authfile: Setting global auth file to '%s'\n",
value);
#endif /* ; */
strncpy (((struct global *) item)->authfile, value,
sizeof (((struct global *)item)->authfile));
break;
default:
snprintf (filerr, sizeof (filerr), "'%s' not valid in this context\n",
word);
return -1;
}
return 0;
}
int set_autodial (char *word, char *value, int context, void *item)
{
switch (context & ~CONTEXT_DEFAULT)
{
case CONTEXT_LAC:
if (set_boolean (word, value, &(((struct lac *) item)->autodial)))
return -1;
break;
default:
snprintf (filerr, sizeof (filerr), "'%s' not valid in this context\n",
word);
return -1;
}
return 0;
}
int set_flow (char *word, char *value, int context, void *item)
{
int v;
set_boolean (word, value, &v);
if (v < 0)
return -1;
switch (context & ~CONTEXT_DEFAULT)
{
case CONTEXT_LAC:
if (v)
{
if (((struct lac *) item)->call_rws < 0)
((struct lac *) item)->call_rws = 0;
}
else
{
((struct lac *) item)->call_rws = -1;
}
break;
case CONTEXT_LNS:
if (v)
{
if (((struct lns *) item)->call_rws < 0)
((struct lns *) item)->call_rws = 0;
}
else
{
((struct lns *) item)->call_rws = -1;
}
break;
default:
snprintf (filerr, sizeof (filerr), "'%s' not valid in this context\n",
word);
return -1;
}
return 0;
}
int set_defaultroute (char *word, char *value, int context, void *item)
{
switch (context & ~CONTEXT_DEFAULT)
{
case CONTEXT_LAC:
if (set_boolean (word, value, &(((struct lac *) item)->defaultroute)))
return -1;
break;
default:
snprintf (filerr, sizeof (filerr), "'%s' not valid in this context\n",
word);
return -1;
}
return 0;
}
int set_authname (char *word, char *value, int context, void *item)
{
struct lac *l = (struct lac *) item;
struct lns *n = (struct lns *) item;
switch (context & ~CONTEXT_DEFAULT)
{
case CONTEXT_LNS:
if (set_string (word, value, n->authname, sizeof (n->authname)))
return -1;
break;
case CONTEXT_LAC:
if (set_string (word, value, l->authname, sizeof (l->authname)))
return -1;
break;
default:
snprintf (filerr, sizeof (filerr), "'%s' not valid in this context\n",
word);
return -1;
}
return 0;
}
int set_hostname (char *word, char *value, int context, void *item)
{
struct lac *l = (struct lac *) item;
struct lns *n = (struct lns *) item;
switch (context & ~CONTEXT_DEFAULT)
{
case CONTEXT_LNS:
if (set_string (word, value, n->hostname, sizeof (n->hostname)))
return -1;
break;
case CONTEXT_LAC:
if (set_string (word, value, l->hostname, sizeof (l->hostname)))
return -1;
break;
default:
snprintf (filerr, sizeof (filerr), "'%s' not valid in this context\n",
word);
return -1;
}
return 0;
}
int set_passwdauth (char *word, char *value, int context, void *item)
{
switch (context & ~CONTEXT_DEFAULT)
{
case CONTEXT_LNS:
if (set_boolean (word, value, &(((struct lns *) item)->passwdauth)))
return -1;
break;
default:
snprintf (filerr, sizeof (filerr), "'%s' not valid in this context\n",
word);
return -1;
}
return 0;
}
int set_hbit (char *word, char *value, int context, void *item)
{
switch (context & ~CONTEXT_DEFAULT)
{
case CONTEXT_LAC:
if (set_boolean (word, value, &(((struct lac *) item)->hbit)))
return -1;
break;
case CONTEXT_LNS:
if (set_boolean (word, value, &(((struct lns *) item)->hbit)))
return -1;
break;
default:
snprintf (filerr, sizeof (filerr), "'%s' not valid in this context\n",
word);
return -1;
}
return 0;
}
int set_challenge (char *word, char *value, int context, void *item)
{
switch (context & ~CONTEXT_DEFAULT)
{
case CONTEXT_LAC:
if (set_boolean (word, value, &(((struct lac *) item)->challenge)))
return -1;
break;
case CONTEXT_LNS:
if (set_boolean (word, value, &(((struct lns *) item)->challenge)))
return -1;
break;
default:
snprintf (filerr, sizeof (filerr), "'%s' not valid in this context\n",
word);
return -1;
}
return 0;
}
int set_lbit (char *word, char *value, int context, void *item)
{
switch (context & ~CONTEXT_DEFAULT)
{
case CONTEXT_LAC:
if (set_boolean (word, value, &(((struct lac *) item)->lbit)))
return -1;
break;
case CONTEXT_LNS:
if (set_boolean (word, value, &(((struct lns *) item)->lbit)))
return -1;
break;
default:
snprintf (filerr, sizeof (filerr), "'%s' not valid in this context\n",
word);
return -1;
}
return 0;
}
int set_debug (char *word, char *value, int context, void *item)
{
switch (context & ~CONTEXT_DEFAULT)
{
case CONTEXT_LAC:
if (set_boolean (word, value, &(((struct lac *) item)->debug)))
return -1;
break;
case CONTEXT_LNS:
if (set_boolean (word, value, &(((struct lns *) item)->debug)))
return -1;
break;
default:
snprintf (filerr, sizeof (filerr), "'%s' not valid in this context\n",
word);
return -1;
}
return 0;
}
int set_pppoptfile (char *word, char *value, int context, void *item)
{
struct lac *l = (struct lac *) item;
struct lns *n = (struct lns *) item;
switch (context & ~CONTEXT_DEFAULT)
{
case CONTEXT_LNS:
if (set_string (word, value, n->pppoptfile, sizeof (n->pppoptfile)))
return -1;
break;
case CONTEXT_LAC:
if (set_string (word, value, l->pppoptfile, sizeof (l->pppoptfile)))
return -1;
break;
default:
snprintf (filerr, sizeof (filerr), "'%s' not valid in this context\n",
word);
return -1;
}
return 0;
}
int set_papchap (char *word, char *value, int context, void *item)
{
int result;
char *c;
struct lac *l = (struct lac *) item;
struct lns *n = (struct lns *) item;
if (set_boolean (word, value, &result))
return -1;
c = strchr (word, ' ');
c++;
switch (context & ~CONTEXT_DEFAULT)
{
case CONTEXT_LAC:
if (c[0] == 'p') /* PAP */
if (word[2] == 'f')
l->pap_refuse = result;
else
l->pap_require = result;
else if (c[0] == 'a') /* Authentication */
if (word[2] == 'f')
l->authself = result;
else
l->authpeer = result;
else /* CHAP */ if (word[2] == 'f')
l->chap_refuse = result;
else
l->chap_require = result;
break;
case CONTEXT_LNS:
if (c[0] == 'p') /* PAP */
if (word[2] == 'f')
n->pap_refuse = result;
else
n->pap_require = result;
else if (c[0] == 'a') /* Authentication */
if (word[2] == 'f')
n->authself = !result;
else
n->authpeer = result;
else /* CHAP */ if (word[2] == 'f')
n->chap_refuse = result;
else
n->chap_require = result;
break;
default:
snprintf (filerr, sizeof (filerr), "'%s' not valid in this context\n",
word);
return -1;
}
return 0;
}
int set_redial (char *word, char *value, int context, void *item)
{
switch (context & ~CONTEXT_DEFAULT)
{
case CONTEXT_LAC:
if (set_boolean (word, value, &(((struct lac *) item)->redial)))
return -1;
break;
default:
snprintf (filerr, sizeof (filerr), "'%s' not valid in this context\n",
word);
return -1;
}
return 0;
}
int set_accesscontrol (char *word, char *value, int context, void *item)
{
switch (context & ~CONTEXT_DEFAULT)
{
case CONTEXT_GLOBAL:
if (set_boolean
(word, value, &(((struct global *) item)->accesscontrol)))
return -1;
break;
default:
snprintf (filerr, sizeof (filerr), "'%s' not valid in this context\n",
word);
return -1;
}
return 0;
}
int set_userspace (char *word, char *value, int context, void *item)
{
switch (context & ~CONTEXT_DEFAULT)
{
case CONTEXT_GLOBAL:
if (set_boolean
(word, value, &(((struct global *) item)->forceuserspace)))
return -1;
break;
default:
snprintf (filerr, sizeof (filerr), "'%s' not valid in this context\n",
word);
return -1;
}
return 0;
}
int set_debugavp (char *word, char *value, int context, void *item)
{
switch (context & ~CONTEXT_DEFAULT)
{
case CONTEXT_GLOBAL:
if (set_boolean
(word, value, &(((struct global *) item)->debug_avp)))
return -1;
break;
default:
snprintf (filerr, sizeof (filerr), "'%s' not valid in this context\n",
word);
return -1;
}
return 0;
}
int set_debugnetwork (char *word, char *value, int context, void *item)
{
switch (context & ~CONTEXT_DEFAULT)
{
case CONTEXT_GLOBAL:
if (set_boolean
(word, value, &(((struct global *) item)->debug_network)))
return -1;
break;
default:
snprintf (filerr, sizeof (filerr), "'%s' not valid in this context\n",
word);
return -1;
}
return 0;
}
int set_debugpacket (char *word, char *value, int context, void *item)
{
switch (context & ~CONTEXT_DEFAULT)
{
case CONTEXT_GLOBAL:
if (set_boolean
(word, value, &(((struct global *) item)->packet_dump)))
return -1;
break;
default:
snprintf (filerr, sizeof (filerr), "'%s' not valid in this context\n",
word);
return -1;
}
return 0;
}
int set_debugtunnel (char *word, char *value, int context, void *item)
{
switch (context & ~CONTEXT_DEFAULT)
{
case CONTEXT_GLOBAL:
if (set_boolean
(word, value, &(((struct global *) item)->debug_tunnel)))
return -1;
break;
default:
snprintf (filerr, sizeof (filerr), "'%s' not valid in this context\n",
word);
return -1;
}
return 0;
}
int set_debugstate (char *word, char *value, int context, void *item)
{
switch (context & ~CONTEXT_DEFAULT)
{
case CONTEXT_GLOBAL:
if (set_boolean
(word, value, &(((struct global *) item)->debug_state)))
return -1;
break;
default:
snprintf (filerr, sizeof (filerr), "'%s' not valid in this context\n",
word);
return -1;
}
return 0;
}
int set_assignip (char *word, char *value, int context, void *item)
{
switch (context & ~CONTEXT_DEFAULT)
{
case CONTEXT_LNS:
if (set_boolean (word, value, &(((struct lns *) item)->assign_ip)))
return -1;
break;
default:
snprintf (filerr, sizeof (filerr), "'%s' not valid in this context\n",
word);
return -1;
}
return 0;
}
///*
//struct iprange *set_range (char *word, char *value, struct iprange *in)
//{
// char *c, *d = NULL, *e = NULL;
// struct iprange *ipr, *p;
// //struct hostent *hp;
// //RY: start
// struct addrinfo myaddr, hp;
// //memset(myaddr, 0, sizeof(myaddr));
// myaddr.ai_family = PF_INET6; //TODO: need to see
// myaddr.ai_flags = AI_PASSIVE;
// //RY: end
// int count = 0;
// c = strchr (value, '-');
// if (c)
// {
// d = c + 1;
// *c = 0;
// while ((c >= value) && (*c < 33))
// *(c--) = 0;
// while (*d && (*d < 33))
// d++;
// }
// if (!strlen (value) || (c && !strlen (d)))
// {
// snprintf (filerr, sizeof (filerr),
// "format is '%s <host or ip> - <host or ip>'\n", word);
// return NULL;
// }
// ipr = (struct iprange *) malloc (sizeof (struct iprange));
// ipr->next = NULL;
// //RY: start
// // getaddrinfo(value, NULL, AF_INET6, &myaddr, &hp);
// //hp = gethostbyname (value);
// //RY: end here
// //if (!hp)
// {
// snprintf (filerr, sizeof (filerr), "Unknown host %s\n", value);
// free (ipr);
// return NULL;
// }
// //bcopy (hp->ai_addr, &ipr->start, sizeof (unsigned int));
// if (c)
// {
// e = d;
// while(*e != '\0') {
// if (*e++ == '.')
// count++;
// }
// if (count != 3) {
// char ip_hi[16];
//
// strcpy(ip_hi, value);
// e = strrchr(ip_hi, '.')+1;
// /* Copy the last field + null terminator */
// strcpy(e, d);
// d = ip_hi;
// }
// // hp = gethostbyname (d);
// // if (!hp)
// {
// snprintf (filerr, sizeof (filerr), "Unknown host %s\n", d);
// free (ipr);
// return NULL;
// }
// //bcopy (hp->h_addr, &ipr->end, sizeof (unsigned int));
// }
// else
// ipr->end = ipr->start;
// if (ntohl (ipr->start) > ntohl (ipr->end))
// {
// snprintf (filerr, sizeof (filerr), "start is greater than end!\n");
// free (ipr);
// return NULL;
// }
// if (word[0] == 'n')
// ipr->sense = SENSE_DENY;
// else
// ipr->sense = SENSE_ALLOW;
// p = in;
// if (p)
// {
// while (p->next)
// p = p->next;
// p->next = ipr;
// return in;
// }
// else
// return ipr;
//}
int set_iprange (char *word, char *value, int context, void *item)
{
struct lns *lns = (struct lns *) item;
switch (context & ~CONTEXT_DEFAULT)
{
case CONTEXT_LNS:
break;
default:
snprintf (filerr, sizeof (filerr), "'%s' not valid in this context\n",
word);
return -1;
}
lns->range = set_range (word, value, lns->range);
if (!lns->range)
return -1;
#ifdef DEBUG_FILE
l2tp_log (LOG_DEBUG, "range start = %x, end = %x, sense=%ud\n",
ntohl (lns->range->start), ntohl (lns->range->end), lns->range->sense);
#endif
return 0;
}
int set_lac (char *word, char *value, int context, void *item)
{
struct lns *lns = (struct lns *) item;
switch (context & ~CONTEXT_DEFAULT)
{
case CONTEXT_LNS:
break;
default:
snprintf (filerr, sizeof (filerr), "'%s' not valid in this context\n",
word);
return -1;
}
lns->lacs = set_range (word, value, lns->lacs);
if (!lns->lacs)
return -1;