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, write to the Free Software
20 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
25 /*******************************************************************
26 Map a username from a dos name to a unix name by looking in the username
27 map. Note that this modifies the name in place.
28 This is the main function that should be called *once* on
29 any incoming or new username - in order to canonicalize the name.
30 This is being done to de-couple the case conversions from the user mapping
31 function. Previously, the map_username was being called
32 every time Get_Pwnam was called.
33 Returns True if username was changed, false otherwise.
34 ********************************************************************/
36 BOOL map_username(fstring user)
38 static BOOL initialised=False;
39 static fstring last_from,last_to;
41 char *mapfile = lp_username_map();
44 BOOL mapped_user = False;
45 char *cmd = lp_username_map_script();
50 if (strequal(user,last_to))
53 if (strequal(user,last_from)) {
54 DEBUG(3,("Mapped user %s to %s\n",user,last_to));
55 fstrcpy(user,last_to);
59 /* first try the username map script */
64 int numlines, ret, fd;
66 pstr_sprintf( command, "%s \"%s\"", cmd, user );
68 DEBUG(10,("Running [%s]\n", command));
69 ret = smbrun(command, &fd);
70 DEBUGADD(10,("returned [%d]\n", ret));
79 qlines = fd_lines_load(fd, &numlines,0);
80 DEBUGADD(10,("Lines returned = [%d]\n", numlines));
83 /* should be either no lines or a single line with the mapped username */
85 if (numlines && qlines) {
86 DEBUG(3,("Mapped user %s to %s\n", user, qlines[0] ));
87 fstrcpy( user, qlines[0] );
90 file_lines_free(qlines);
95 /* ok. let's try the mapfile */
101 *last_from = *last_to = 0;
105 f = x_fopen(mapfile,O_RDONLY, 0);
107 DEBUG(0,("can't open username map %s. Error %s\n",mapfile, strerror(errno) ));
111 DEBUG(4,("Scanning username map %s\n",mapfile));
113 while((s=fgets_slash(buf,sizeof(buf),f))!=NULL) {
115 char *dosname = strchr_m(unixname,'=');
117 BOOL return_if_mapped = False;
124 while (isspace((int)*unixname))
127 if ('!' == *unixname) {
128 return_if_mapped = True;
130 while (*unixname && isspace((int)*unixname))
134 if (!*unixname || strchr_m("#;",*unixname))
138 int l = strlen(unixname);
139 while (l && isspace((int)unixname[l-1])) {
145 /* skip lines like 'user = ' */
147 dosuserlist = str_list_make(dosname, NULL);
149 DEBUG(0,("Bad username map entry. Unable to build user list. Ignoring.\n"));
153 if (strchr_m(dosname,'*') ||
154 user_in_list(user, (const char **)dosuserlist)) {
155 DEBUG(3,("Mapped user %s to %s\n",user,unixname));
157 fstrcpy( last_from,user );
158 fstrcpy( user, unixname );
159 fstrcpy( last_to,user );
160 if ( return_if_mapped ) {
161 str_list_free (&dosuserlist);
167 str_list_free (&dosuserlist);
173 * Setup the last_from and last_to as an optimization so
174 * that we don't scan the file again for the same user.
176 fstrcpy(last_from,user);
177 fstrcpy(last_to,user);