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b79aed8592
Signed-off-by: Richard Sharpe <rsharpe@samba.org> Reviewed-by: Jeremy Allison <jra@samba.org>
106 lines
3.3 KiB
C
106 lines
3.3 KiB
C
/*
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Unix SMB/CIFS implementation.
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NBT netbios routines and daemon - version 2
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Copyright (C) Jeremy Allison 1994-1998
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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Revision History:
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Handle lmhosts file reading.
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*/
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#include "includes.h"
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#include "../libcli/nbt/libnbt.h"
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#include "nmbd/nmbd.h"
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/****************************************************************************
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Load a lmhosts file.
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****************************************************************************/
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void load_lmhosts_file(const char *fname)
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{
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char *name = NULL;
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int name_type;
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struct sockaddr_storage ss;
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TALLOC_CTX *ctx = talloc_init("load_lmhosts_file");
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XFILE *fp = startlmhosts( fname );
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if (!fp) {
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DEBUG(2,("load_lmhosts_file: Can't open lmhosts file %s. Error was %s\n",
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fname, strerror(errno)));
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TALLOC_FREE(ctx);
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return;
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}
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while (getlmhostsent(ctx, fp, &name, &name_type, &ss) ) {
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struct in_addr ipaddr;
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struct subnet_record *subrec = NULL;
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enum name_source source = LMHOSTS_NAME;
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if (ss.ss_family != AF_INET) {
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TALLOC_FREE(name);
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continue;
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}
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ipaddr = ((struct sockaddr_in *)&ss)->sin_addr;
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/* We find a relevent subnet to put this entry on, then add it. */
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/* Go through all the broadcast subnets and see if the mask matches. */
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for (subrec = FIRST_SUBNET; subrec ; subrec = NEXT_SUBNET_EXCLUDING_UNICAST(subrec)) {
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if(same_net_v4(ipaddr, subrec->bcast_ip, subrec->mask_ip))
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break;
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}
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/* If none match add the name to the remote_broadcast_subnet. */
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if(subrec == NULL)
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subrec = remote_broadcast_subnet;
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if(name_type == -1) {
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/* Add the (0) and (0x20) names directly into the namelist for this subnet. */
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(void)add_name_to_subnet(subrec,name,0x00,(uint16_t)NB_ACTIVE,PERMANENT_TTL,source,1,&ipaddr);
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(void)add_name_to_subnet(subrec,name,0x20,(uint16_t)NB_ACTIVE,PERMANENT_TTL,source,1,&ipaddr);
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} else {
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/* Add the given name type to the subnet namelist. */
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(void)add_name_to_subnet(subrec,name,name_type,(uint16_t)NB_ACTIVE,PERMANENT_TTL,source,1,&ipaddr);
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}
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}
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TALLOC_FREE(ctx);
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endlmhosts(fp);
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}
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/****************************************************************************
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Find a name read from the lmhosts file. We secretly check the names on
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the remote_broadcast_subnet as if the name was added to a regular broadcast
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subnet it will be found by normal name query processing.
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****************************************************************************/
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bool find_name_in_lmhosts(struct nmb_name *nmbname, struct name_record **namerecp)
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{
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struct name_record *namerec;
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*namerecp = NULL;
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if((namerec = find_name_on_subnet(remote_broadcast_subnet, nmbname, FIND_ANY_NAME))==NULL)
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return False;
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if(!NAME_IS_ACTIVE(namerec) || (namerec->data.source != LMHOSTS_NAME))
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return False;
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*namerecp = namerec;
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return True;
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}
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