2 Unix SMB/Netbios implementation.
5 Copyright (C) Jeremy Allison 1998.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22 #ifdef USING_GROUPNAME_MAP
25 extern int DEBUGLEVEL;
26 extern DOM_SID global_sam_sid;
29 /**************************************************************************
30 Groupname map functionality. The code loads a groupname map file and
31 (currently) loads it into a linked list. This is slow and memory
32 hungry, but can be changed into a more efficient storage format
33 if the demands on it become excessive.
34 ***************************************************************************/
36 typedef struct groupname_map {
43 } groupname_map_entry;
45 static ubi_slList groupname_map_list;
47 /**************************************************************************
48 Delete all the entries in the groupname map list.
49 ***************************************************************************/
51 static void delete_groupname_map_list(void)
53 groupname_map_entry *gmep;
55 while((gmep = (groupname_map_entry *)ubi_slRemHead( &groupname_map_list )) != NULL) {
56 if(gmep->windows_name)
57 free(gmep->windows_name);
59 free(gmep->unix_name);
64 /**************************************************************************
65 Load a groupname map file. Sets last accessed timestamp.
66 ***************************************************************************/
68 void load_groupname_map(void)
70 static time_t groupmap_file_last_modified = (time_t)0;
71 static BOOL initialized = False;
72 char *groupname_map_file = lp_groupname_map();
76 groupname_map_entry *new_ep;
79 ubi_slInitList( &groupname_map_list );
83 if (!*groupname_map_file)
86 if(sys_stat(groupname_map_file, &st) != 0) {
87 DEBUG(0, ("load_groupname_map: Unable to stat file %s. Error was %s\n",
88 groupname_map_file, strerror(errno) ));
93 * Check if file has changed.
95 if( st.st_mtime <= groupmap_file_last_modified)
98 groupmap_file_last_modified = st.st_mtime;
104 lines = file_lines_load(groupname_map_file,NULL,False);
106 DEBUG(0,("load_groupname_map: can't open groupname map %s. Error was %s\n",
107 groupname_map_file, strerror(errno)));
110 file_lines_slashcont(lines);
113 * Throw away any previous list.
115 delete_groupname_map_list();
117 DEBUG(4,("load_groupname_map: Scanning groupname map %s\n",groupname_map_file));
119 for (i=0; lines[i]; i++) {
121 pstring windows_name;
126 DEBUG(10,("load_groupname_map: Read line |%s|\n", s));
128 if (!*s || strchr("#;",*s))
131 if(!next_token(&s,unixname, "\t\n\r=", sizeof(unixname)))
134 if(!next_token(&s,windows_name, "\t\n\r=", sizeof(windows_name)))
137 trim_string(unixname, " ", " ");
138 trim_string(windows_name, " ", " ");
146 DEBUG(5,("load_groupname_map: unixname = %s, windowsname = %s.\n",
147 unixname, windows_name));
150 * Attempt to get the unix gid_t for this name.
153 if ((gid = nametogid(unixname)) == (gid_t)-1)
154 DEBUG(0,("load_groupname_map: nametogid for group %s failed.\
155 Error was %s.\n", unixname, strerror(errno) ));
160 * Now map to an NT SID.
163 if(!lookup_wellknown_sid_from_name(windows_name, &tmp_sid)) {
165 * It's not a well known name, convert the UNIX gid_t
166 * to a rid within this domain SID.
168 tmp_sid = global_sam_sid;
169 tmp_sid.sub_auths[tmp_sid.num_auths++] =
170 pdb_gid_to_group_rid(gid);
174 * Create the list entry and add it onto the list.
177 if((new_ep = (groupname_map_entry *)malloc( sizeof(groupname_map_entry) ))== NULL) {
178 DEBUG(0,("load_groupname_map: malloc fail for groupname_map_entry.\n"));
183 new_ep->unix_gid = gid;
184 new_ep->windows_sid = tmp_sid;
185 new_ep->windows_name = strdup( windows_name );
186 new_ep->unix_name = strdup( unixname );
188 if(new_ep->windows_name == NULL || new_ep->unix_name == NULL) {
189 DEBUG(0,("load_groupname_map: malloc fail for names in groupname_map_entry.\n"));
191 if(new_ep->windows_name != NULL)
192 free(new_ep->windows_name);
193 if(new_ep->unix_name != NULL)
194 free(new_ep->unix_name);
195 free((char *)new_ep);
196 file_lines_free(lines);
199 memset((char *)&new_ep->next, '\0', sizeof(new_ep->next) );
201 ubi_slAddHead( &groupname_map_list, (ubi_slNode *)new_ep);
204 DEBUG(10,("load_groupname_map: Added %ld entries to groupname map.\n",
205 ubi_slCount(&groupname_map_list)));
207 file_lines_free(lines);
210 /***********************************************************
211 Lookup a SID entry by gid_t.
212 ************************************************************/
214 void map_gid_to_sid( gid_t gid, DOM_SID *psid)
216 groupname_map_entry *gmep;
219 * Initialize and load if not already loaded.
221 load_groupname_map();
223 for( gmep = (groupname_map_entry *)ubi_slFirst( &groupname_map_list);
224 gmep; gmep = (groupname_map_entry *)ubi_slNext( gmep )) {
226 if( gmep->unix_gid == gid) {
227 *psid = gmep->windows_sid;
228 DEBUG(7,("map_gid_to_sid: Mapping unix group %s to windows group %s.\n",
229 gmep->unix_name, gmep->windows_name ));
235 * If there's no map, convert the UNIX gid_t
236 * to a rid within this domain SID.
238 *psid = global_sam_sid;
239 psid->sub_auths[psid->num_auths++] = pdb_gid_to_group_rid(gid);
243 #else /* USING_GROUPNAME_MAP */
244 void load_groupname_map(void) {;}
245 #endif /* USING_GROUPNAME_MAP */