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/******************************************************************************
(c) 1995-1998 E.M. Serrat emserrat@geocities.com
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <stdio.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <string.h>
#include <stdlib.h>
#include <netdnet/dn.h>
#include <netdnet/dnetdb.h>
static char nodetag[80],nametag[80],nodeadr[80],nodename[80];
static struct dn_naddr binadr = {0x0002,{0x00,0x00}};
struct dn_naddr *dnet_addr(char *name)
{
FILE *dnhosts;
char nodeln[80];
char **endptr;
char *aux;
long area,node;
if ((dnhosts = fopen(SYSCONF_PREFIX "/etc/decnet.conf","r")) == NULL)
{
printf("dnet_addr: Can not open " SYSCONF_PREFIX "/etc/decnet.conf\n");
return 0;
}
while (fgets(nodeln,80,dnhosts) != NULL)
{
sscanf(nodeln,"%s%s%s%s\n",nodetag,nodeadr,nametag,nodename);
if (strncmp(nodetag,"#",1) != 0)
{
if (((strcmp(nodetag,"executor") != 0) &&
(strcmp(nodetag,"node") != 0)) ||
(strcmp(nametag,"name") != 0))
{
printf("dnet_addr: Invalid decnet.conf syntax\n");
return 0;
}
if (strcmp(nodename,name) == 0)
{
aux=nodeadr;
endptr=&aux;
area=strtol(nodeadr,endptr,0);
node=strtol(*endptr+1,endptr,0);
if ((area < 0) || (area > 63) ||
(node < 0) || (node > 1023))
{
printf("dnet_addr: Invalid address %d.%d\n",
(int)area,(int)node);
fclose(dnhosts);
return 0;
}
binadr.a_addr[0] = node & 0xFF;
binadr.a_addr[1] = (area << 2) | ((node & 0x300) >> 8);
fclose(dnhosts);
return &binadr;
}
}
}
fclose(dnhosts);
return 0;
}
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