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 command = talloc_asprintf(talloc_tos(),
73 DEBUG(10,("Running [%s]\n", command));
74 ret = smbrun(command, &fd);
75 DEBUGADD(10,("returned [%d]\n", ret));
84 qlines = fd_lines_load(fd, &numlines,0);
85 DEBUGADD(10,("Lines returned = [%d]\n", numlines));
88 /* should be either no lines or a single line with the mapped username */
90 if (numlines && qlines) {
91 DEBUG(3,("Mapped user %s to %s\n", user, qlines[0] ));
92 fstrcpy( user, qlines[0] );
95 file_lines_free(qlines);
100 /* ok. let's try the mapfile */
106 *last_from = *last_to = 0;
110 f = x_fopen(mapfile,O_RDONLY, 0);
112 DEBUG(0,("can't open username map %s. Error %s\n",mapfile, strerror(errno) ));
116 DEBUG(4,("Scanning username map %s\n",mapfile));
118 while((s=fgets_slash(buf,sizeof(buf),f))!=NULL) {
120 char *dosname = strchr_m(unixname,'=');
122 bool return_if_mapped = False;
129 while (isspace((int)*unixname))
132 if ('!' == *unixname) {
133 return_if_mapped = True;
135 while (*unixname && isspace((int)*unixname))
139 if (!*unixname || strchr_m("#;",*unixname))
143 int l = strlen(unixname);
144 while (l && isspace((int)unixname[l-1])) {
150 /* skip lines like 'user = ' */
152 dosuserlist = str_list_make(dosname, NULL);
154 DEBUG(0,("Bad username map entry. Unable to build user list. Ignoring.\n"));
158 if (strchr_m(dosname,'*') ||
159 user_in_list(user, (const char **)dosuserlist)) {
160 DEBUG(3,("Mapped user %s to %s\n",user,unixname));
162 fstrcpy( last_from,user );
163 fstrcpy( user, unixname );
164 fstrcpy( last_to,user );
165 if ( return_if_mapped ) {
166 str_list_free (&dosuserlist);
172 str_list_free (&dosuserlist);
178 * Setup the last_from and last_to as an optimization so
179 * that we don't scan the file again for the same user.
181 fstrcpy(last_from,user);
182 fstrcpy(last_to,user);