2 Unix SMB/CIFS implementation.
4 Copyright (C) Andrew Tridgell 1992-1998
5 Copyright (C) Jeremy Allison 1997-2001.
6 Copyright (C) Volker Lendecke 2006
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program. If not, see <http://www.gnu.org/licenses/>.
24 /*******************************************************************
25 Map a username from a dos name to a unix name by looking in the username
26 map. Note that this modifies the name in place.
27 This is the main function that should be called *once* on
28 any incoming or new username - in order to canonicalize the name.
29 This is being done to de-couple the case conversions from the user mapping
30 function. Previously, the map_username was being called
31 every time Get_Pwnam was called.
32 Returns True if username was changed, false otherwise.
33 ********************************************************************/
35 BOOL map_username(fstring user)
37 static BOOL initialised=False;
38 static fstring last_from,last_to;
40 char *mapfile = lp_username_map();
43 BOOL mapped_user = False;
44 char *cmd = lp_username_map_script();
49 if (strequal(user,last_to))
52 if (strequal(user,last_from)) {
53 DEBUG(3,("Mapped user %s to %s\n",user,last_to));
54 fstrcpy(user,last_to);
58 /* first try the username map script */
63 int numlines, ret, fd;
65 pstr_sprintf( command, "%s \"%s\"", cmd, user );
67 DEBUG(10,("Running [%s]\n", command));
68 ret = smbrun(command, &fd);
69 DEBUGADD(10,("returned [%d]\n", ret));
78 qlines = fd_lines_load(fd, &numlines,0);
79 DEBUGADD(10,("Lines returned = [%d]\n", numlines));
82 /* should be either no lines or a single line with the mapped username */
84 if (numlines && qlines) {
85 DEBUG(3,("Mapped user %s to %s\n", user, qlines[0] ));
86 fstrcpy( user, qlines[0] );
89 file_lines_free(qlines);
94 /* ok. let's try the mapfile */
100 *last_from = *last_to = 0;
104 f = x_fopen(mapfile,O_RDONLY, 0);
106 DEBUG(0,("can't open username map %s. Error %s\n",mapfile, strerror(errno) ));
110 DEBUG(4,("Scanning username map %s\n",mapfile));
112 while((s=fgets_slash(buf,sizeof(buf),f))!=NULL) {
114 char *dosname = strchr_m(unixname,'=');
116 BOOL return_if_mapped = False;
123 while (isspace((int)*unixname))
126 if ('!' == *unixname) {
127 return_if_mapped = True;
129 while (*unixname && isspace((int)*unixname))
133 if (!*unixname || strchr_m("#;",*unixname))
137 int l = strlen(unixname);
138 while (l && isspace((int)unixname[l-1])) {
144 /* skip lines like 'user = ' */
146 dosuserlist = str_list_make(dosname, NULL);
148 DEBUG(0,("Bad username map entry. Unable to build user list. Ignoring.\n"));
152 if (strchr_m(dosname,'*') ||
153 user_in_list(user, (const char **)dosuserlist)) {
154 DEBUG(3,("Mapped user %s to %s\n",user,unixname));
156 fstrcpy( last_from,user );
157 fstrcpy( user, unixname );
158 fstrcpy( last_to,user );
159 if ( return_if_mapped ) {
160 str_list_free (&dosuserlist);
166 str_list_free (&dosuserlist);
172 * Setup the last_from and last_to as an optimization so
173 * that we don't scan the file again for the same user.
175 fstrcpy(last_from,user);
176 fstrcpy(last_to,user);