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 DOM_SID global_sam_sid
;
28 /**************************************************************************
29 Groupname map functionality. The code loads a groupname map file and
30 (currently) loads it into a linked list. This is slow and memory
31 hungry, but can be changed into a more efficient storage format
32 if the demands on it become excessive.
33 ***************************************************************************/
35 typedef struct groupname_map
{
42 } groupname_map_entry
;
44 static ubi_slList groupname_map_list
;
46 /**************************************************************************
47 Delete all the entries in the groupname map list.
48 ***************************************************************************/
50 static void delete_groupname_map_list(void)
52 groupname_map_entry
*gmep
;
54 while((gmep
= (groupname_map_entry
*)ubi_slRemHead( &groupname_map_list
)) != NULL
) {
55 SAFE_FREE(gmep
->windows_name
);
56 SAFE_FREE(gmep
->unix_name
);
61 /**************************************************************************
62 Load a groupname map file. Sets last accessed timestamp.
63 ***************************************************************************/
65 void load_groupname_map(void)
67 static time_t groupmap_file_last_modified
= (time_t)0;
68 static BOOL initialized
= False
;
69 char *groupname_map_file
= lp_groupname_map();
73 groupname_map_entry
*new_ep
;
76 ubi_slInitList( &groupname_map_list
);
80 if (!*groupname_map_file
)
83 if(sys_stat(groupname_map_file
, &st
) != 0) {
84 DEBUG(0, ("load_groupname_map: Unable to stat file %s. Error was %s\n",
85 groupname_map_file
, strerror(errno
) ));
90 * Check if file has changed.
92 if( st
.st_mtime
<= groupmap_file_last_modified
)
95 groupmap_file_last_modified
= st
.st_mtime
;
101 lines
= file_lines_load(groupname_map_file
,NULL
,False
);
103 DEBUG(0,("load_groupname_map: can't open groupname map %s. Error was %s\n",
104 groupname_map_file
, strerror(errno
)));
107 file_lines_slashcont(lines
);
110 * Throw away any previous list.
112 delete_groupname_map_list();
114 DEBUG(4,("load_groupname_map: Scanning groupname map %s\n",groupname_map_file
));
116 for (i
=0; lines
[i
]; i
++) {
118 pstring windows_name
;
123 DEBUG(10,("load_groupname_map: Read line |%s|\n", s
));
125 if (!*s
|| strchr("#;",*s
))
128 if(!next_token(&s
,unixname
, "\t\n\r=", sizeof(unixname
)))
131 if(!next_token(&s
,windows_name
, "\t\n\r=", sizeof(windows_name
)))
134 trim_string(unixname
, " ", " ");
135 trim_string(windows_name
, " ", " ");
143 DEBUG(5,("load_groupname_map: unixname = %s, windowsname = %s.\n",
144 unixname
, windows_name
));
147 * Attempt to get the unix gid_t for this name.
150 if ((gid
= nametogid(unixname
)) == (gid_t
)-1)
151 DEBUG(0,("load_groupname_map: nametogid for group %s failed.\
152 Error was %s.\n", unixname
, strerror(errno
) ));
157 * Now map to an NT SID.
160 if(!lookup_wellknown_sid_from_name(windows_name
, &tmp_sid
)) {
162 * It's not a well known name, convert the UNIX gid_t
163 * to a rid within this domain SID.
165 tmp_sid
= global_sam_sid
;
166 tmp_sid
.sub_auths
[tmp_sid
.num_auths
++] =
167 pdb_gid_to_group_rid(gid
);
171 * Create the list entry and add it onto the list.
174 if((new_ep
= (groupname_map_entry
*)malloc( sizeof(groupname_map_entry
) ))== NULL
) {
175 DEBUG(0,("load_groupname_map: malloc fail for groupname_map_entry.\n"));
180 new_ep
->unix_gid
= gid
;
181 new_ep
->windows_sid
= tmp_sid
;
182 new_ep
->windows_name
= strdup( windows_name
);
183 new_ep
->unix_name
= strdup( unixname
);
185 if(new_ep
->windows_name
== NULL
|| new_ep
->unix_name
== NULL
) {
186 DEBUG(0,("load_groupname_map: malloc fail for names in groupname_map_entry.\n"));
188 SAFE_FREE(new_ep
->windows_name
);
189 SAFE_FREE(new_ep
->unix_name
);
191 file_lines_free(lines
);
194 memset((char *)&new_ep
->next
, '\0', sizeof(new_ep
->next
) );
196 ubi_slAddHead( &groupname_map_list
, (ubi_slNode
*)new_ep
);
199 DEBUG(10,("load_groupname_map: Added %ld entries to groupname map.\n",
200 ubi_slCount(&groupname_map_list
)));
202 file_lines_free(lines
);
205 /***********************************************************
206 Lookup a SID entry by gid_t.
207 ************************************************************/
209 void map_gid_to_sid( gid_t gid
, DOM_SID
*psid
)
211 groupname_map_entry
*gmep
;
214 * Initialize and load if not already loaded.
216 load_groupname_map();
218 for( gmep
= (groupname_map_entry
*)ubi_slFirst( &groupname_map_list
);
219 gmep
; gmep
= (groupname_map_entry
*)ubi_slNext( gmep
)) {
221 if( gmep
->unix_gid
== gid
) {
222 *psid
= gmep
->windows_sid
;
223 DEBUG(7,("map_gid_to_sid: Mapping unix group %s to windows group %s.\n",
224 gmep
->unix_name
, gmep
->windows_name
));
230 * If there's no map, convert the UNIX gid_t
231 * to a rid within this domain SID.
233 *psid
= global_sam_sid
;
234 psid
->sub_auths
[psid
->num_auths
++] = pdb_gid_to_group_rid(gid
);
238 #else /* USING_GROUPNAME_MAP */
239 void load_groupname_map(void) {;}
240 #endif /* USING_GROUPNAME_MAP */