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/*
Unix SMB/Netbios implementation.
Version 1.9.
NBT netbios routines and daemon - version 2
Copyright (C) Jeremy Allison 1994-1997
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
Revision History:
Handle lmhosts file reading.
*/
#include "includes.h"
extern int DEBUGLEVEL;
/****************************************************************************
Load a lmhosts file.
****************************************************************************/
void load_lmhosts_file(char *fname)
{
FILE *fp = fopen(fname,"r");
pstring line;
if (!fp) {
DEBUG(2,("load_lmhosts_file: Can't open lmhosts file %s. Error was %s\n",
fname, strerror(errno)));
return;
}
while (!feof(fp))
{
pstring ip,name,flags,extra;
struct subnet_record *subrec = NULL;
char *ptr;
int count = 0;
struct in_addr ipaddr;
enum name_source source = LMHOSTS_NAME;
int name_type = -1;
if (!fgets_slash(line,sizeof(pstring),fp))
continue;
if (*line == '#')
continue;
strcpy(ip,"");
strcpy(name,"");
strcpy(flags,"");
ptr = line;
if (next_token(&ptr,ip ,NULL))
++count;
if (next_token(&ptr,name ,NULL))
++count;
if (next_token(&ptr,flags,NULL))
++count;
if (next_token(&ptr,extra,NULL))
++count;
if (count <= 0)
continue;
if (count > 0 && count < 2)
{
DEBUG(0,("load_lmhosts_file: Ill formed hosts line [%s]\n",line));
continue;
}
if (count >= 4)
{
DEBUG(0,("load_lmhosts_file: too many columns in lmhosts file %s (obsolete syntax)\n",
fname));
continue;
}
DEBUG(4, ("load_lmhosts_file: lmhost entry: %s %s %s\n", ip, name, flags));
if (strchr(flags,'G') || strchr(flags,'S'))
{
DEBUG(0,("load_lmhosts_file: group flag in %s ignored (obsolete)\n",fname));
continue;
}
ipaddr = *interpret_addr2(ip);
/* Extra feature. If the name ends in '#XX', where XX is a hex number,
then only add that name type. */
if((ptr = strchr(name, '#')) != NULL)
{
char *endptr;
ptr++;
name_type = (int)strtol(ptr, &endptr,0);
if(!*ptr || (endptr == ptr))
{
DEBUG(0,("load_lmhosts_file: invalid name %s containing '#'.\n", name));
continue;
}
*(--ptr) = '\0'; /* Truncate at the '#' */
}
/* We find a relevent subnet to put this entry on, then add it. */
/* Go through all the broadcast subnets and see if the mask matches. */
for (subrec = FIRST_SUBNET; subrec ; subrec = NEXT_SUBNET_EXCLUDING_UNICAST(subrec))
{
if(same_net(ipaddr, subrec->bcast_ip, subrec->mask_ip))
break;
}
/* If none match add the name to the remote_broadcast_subnet. */
if(subrec == NULL)
subrec = remote_broadcast_subnet;
if(name_type == -1)
{
/* Add the (0) and (0x20) names directly into the namelist for this subnet. */
add_name_to_subnet(subrec,name,0x00,(uint16)NB_ACTIVE,PERMANENT_TTL,source,1,&ipaddr);
add_name_to_subnet(subrec,name,0x20,(uint16)NB_ACTIVE,PERMANENT_TTL,source,1,&ipaddr);
}
else
{
/* Add the given name type to the subnet namelist. */
add_name_to_subnet(subrec,name,name_type,(uint16)NB_ACTIVE,PERMANENT_TTL,source,1,&ipaddr);
}
}
fclose(fp);
}
/****************************************************************************
Find a name read from the lmhosts file. We secretly check the names on
the remote_broadcast_subnet as if the name was added to a regular broadcast
subnet it will be found by normal name query processing.
****************************************************************************/
BOOL find_name_in_lmhosts(struct nmb_name *nmbname, struct name_record **namerecp)
{
struct name_record *namerec;
*namerecp = NULL;
if((namerec = find_name_on_subnet(remote_broadcast_subnet, nmbname,
FIND_ANY_NAME))==NULL)
return False;
if(!NAME_IS_ACTIVE(namerec) || (namerec->source != LMHOSTS_NAME))
return False;
*namerecp = namerec;
return True;
}
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