2 Unix SMB/CIFS implementation.
4 manipulate nbt name structures
6 Copyright (C) Andrew Tridgell 1994-1998
7 Copyright (C) Jeremy Allison 2007
8 Copyright (C) Andrew Bartlett 2009.
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 3 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with this program. If not, see <http://www.gnu.org/licenses/>.
25 #include "lib/util/xfile.h"
26 #include "lib/util/util_net.h"
27 #include "system/filesys.h"
28 #include "system/network.h"
29 #include "../libcli/nbt/libnbt.h"
31 /********************************************************
32 Start parsing the lmhosts file.
33 *********************************************************/
35 XFILE *startlmhosts(const char *fname)
37 XFILE *fp = x_fopen(fname,O_RDONLY, 0);
39 DEBUG(4,("startlmhosts: Can't open lmhosts file %s. "
41 fname, strerror(errno)));
47 /********************************************************
48 Parse the next line in the lmhosts file.
49 *********************************************************/
51 bool getlmhostsent(TALLOC_CTX *ctx, XFILE *fp, char **pp_name, int *name_type,
52 struct sockaddr_storage *pss)
58 while(!x_feof(fp) && !x_ferror(fp)) {
69 if (!fgets_slash(line,sizeof(line),fp)) {
79 if (next_token_talloc(ctx, &ptr, &ip, NULL))
81 if (next_token_talloc(ctx, &ptr, &name, NULL))
83 if (next_token_talloc(ctx, &ptr, &flags, NULL))
85 if (next_token_talloc(ctx, &ptr, &extra, NULL))
91 if (count > 0 && count < 2) {
92 DEBUG(0,("getlmhostsent: Ill formed hosts line [%s]\n",
98 DEBUG(0,("getlmhostsent: too many columns "
99 "in lmhosts file (obsolete syntax)\n"));
104 flags = talloc_strdup(ctx, "");
110 DEBUG(4, ("getlmhostsent: lmhost entry: %s %s %s\n",
113 if (strchr_m(flags,'G') || strchr_m(flags,'S')) {
114 DEBUG(0,("getlmhostsent: group flag "
115 "in lmhosts ignored (obsolete)\n"));
119 if (!interpret_string_addr(pss, ip, AI_NUMERICHOST)) {
120 DEBUG(0,("getlmhostsent: invalid address "
124 /* Extra feature. If the name ends in '#XX',
125 * where XX is a hex number, then only add that name type. */
126 if((ptr1 = strchr_m(name, '#')) != NULL) {
130 *name_type = (int)strtol(ptr1, &endptr, 16);
131 if(!*ptr1 || (endptr == ptr1)) {
132 DEBUG(0,("getlmhostsent: invalid name "
133 "%s containing '#'.\n", name));
137 *(--ptr1) = '\0'; /* Truncate at the '#' */
140 *pp_name = talloc_strdup(ctx, name);
150 /********************************************************
151 Finish parsing the lmhosts file.
152 *********************************************************/
154 void endlmhosts(XFILE *fp)
159 /********************************************************
160 Resolve via "lmhosts" method.
161 *********************************************************/
163 NTSTATUS resolve_lmhosts_file_as_sockaddr(const char *lmhosts_file,
164 const char *name, int name_type,
166 struct sockaddr_storage **return_iplist,
170 * "lmhosts" means parse the local lmhosts file.
174 char *lmhost_name = NULL;
176 struct sockaddr_storage return_ss;
177 NTSTATUS status = NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND;
178 TALLOC_CTX *ctx = NULL;
180 *return_iplist = NULL;
183 DEBUG(3,("resolve_lmhosts: "
184 "Attempting lmhosts lookup for name %s<0x%x>\n",
187 fp = startlmhosts(lmhosts_file);
190 return NT_STATUS_NO_SUCH_FILE;
192 ctx = talloc_new(mem_ctx);
195 return NT_STATUS_NO_MEMORY;
198 while (getlmhostsent(ctx, fp, &lmhost_name, &name_type2, &return_ss)) {
200 if (!strequal(name, lmhost_name)) {
201 TALLOC_FREE(lmhost_name);
205 if ((name_type2 != -1) && (name_type != name_type2)) {
206 TALLOC_FREE(lmhost_name);
210 *return_iplist = talloc_realloc(ctx, (*return_iplist),
211 struct sockaddr_storage,
214 if ((*return_iplist) == NULL) {
217 DEBUG(3,("resolve_lmhosts: talloc_realloc fail !\n"));
218 return NT_STATUS_NO_MEMORY;
221 (*return_iplist)[*return_count] = return_ss;
224 /* we found something */
225 status = NT_STATUS_OK;
227 /* Multiple names only for DC lookup */
228 if (name_type != 0x1c)
232 talloc_steal(mem_ctx, *return_iplist);