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DEFINITIONS
This source file includes following definitions.
- load_lmhosts_file
- find_name_in_lmhosts
1 /*
2 Unix SMB/CIFS implementation.
3 NBT netbios routines and daemon - version 2
4 Copyright (C) Jeremy Allison 1994-1998
5
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
10
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with this program. If not, see <http://www.gnu.org/licenses/>.
18
19 Revision History:
20
21 Handle lmhosts file reading.
22
23 */
24
25 #include "includes.h"
26
27 /****************************************************************************
28 Load a lmhosts file.
29 ****************************************************************************/
30
31 void load_lmhosts_file(const char *fname)
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32 {
33 char *name = NULL;
34 int name_type;
35 struct sockaddr_storage ss;
36 TALLOC_CTX *ctx = talloc_init("load_lmhosts_file");
37 XFILE *fp = startlmhosts( fname );
38
39 if (!fp) {
40 DEBUG(2,("load_lmhosts_file: Can't open lmhosts file %s. Error was %s\n",
41 fname, strerror(errno)));
42 TALLOC_FREE(ctx);
43 return;
44 }
45
46 while (getlmhostsent(ctx, fp, &name, &name_type, &ss) ) {
47 struct in_addr ipaddr;
48 struct subnet_record *subrec = NULL;
49 enum name_source source = LMHOSTS_NAME;
50
51 if (ss.ss_family != AF_INET) {
52 TALLOC_FREE(name);
53 continue;
54 }
55
56 ipaddr = ((struct sockaddr_in *)&ss)->sin_addr;
57
58 /* We find a relevent subnet to put this entry on, then add it. */
59 /* Go through all the broadcast subnets and see if the mask matches. */
60 for (subrec = FIRST_SUBNET; subrec ; subrec = NEXT_SUBNET_EXCLUDING_UNICAST(subrec)) {
61 if(same_net_v4(ipaddr, subrec->bcast_ip, subrec->mask_ip))
62 break;
63 }
64
65 /* If none match add the name to the remote_broadcast_subnet. */
66 if(subrec == NULL)
67 subrec = remote_broadcast_subnet;
68
69 if(name_type == -1) {
70 /* Add the (0) and (0x20) names directly into the namelist for this subnet. */
71 (void)add_name_to_subnet(subrec,name,0x00,(uint16)NB_ACTIVE,PERMANENT_TTL,source,1,&ipaddr);
72 (void)add_name_to_subnet(subrec,name,0x20,(uint16)NB_ACTIVE,PERMANENT_TTL,source,1,&ipaddr);
73 } else {
74 /* Add the given name type to the subnet namelist. */
75 (void)add_name_to_subnet(subrec,name,name_type,(uint16)NB_ACTIVE,PERMANENT_TTL,source,1,&ipaddr);
76 }
77 }
78
79 TALLOC_FREE(ctx);
80 endlmhosts(fp);
81 }
82
83 /****************************************************************************
84 Find a name read from the lmhosts file. We secretly check the names on
85 the remote_broadcast_subnet as if the name was added to a regular broadcast
86 subnet it will be found by normal name query processing.
87 ****************************************************************************/
88
89 bool find_name_in_lmhosts(struct nmb_name *nmbname, struct name_record **namerecp)
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90 {
91 struct name_record *namerec;
92
93 *namerecp = NULL;
94
95 if((namerec = find_name_on_subnet(remote_broadcast_subnet, nmbname, FIND_ANY_NAME))==NULL)
96 return False;
97
98 if(!NAME_IS_ACTIVE(namerec) || (namerec->data.source != LMHOSTS_NAME))
99 return False;
100
101 *namerecp = namerec;
102 return True;
103 }