2 * Copyright (c) 1997-1999 Erez Zadok
3 * Copyright (c) 1990 Jan-Simon Pendry
4 * Copyright (c) 1990 Imperial College of Science, Technology & Medicine
5 * Copyright (c) 1990 The Regents of the University of California.
8 * This code is derived from software contributed to Berkeley by
9 * Jan-Simon Pendry at Imperial College, London.
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. All advertising materials mentioning features or use of this software
20 * must display the following acknowledgment:
21 * This product includes software developed by the University of
22 * California, Berkeley and its contributors.
23 * 4. Neither the name of the University nor the names of its contributors
24 * may be used to endorse or promote products derived from this software
25 * without specific prior written permission.
27 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
28 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
29 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
30 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
31 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
32 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
33 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
35 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
36 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
41 * $Id: info_passwd.c,v 1.2 1999/01/10 21:53:46 ezk Exp $
46 * Get info from password "file"
48 * This is experimental and probably doesn't do what you expect.
53 #endif /* HAVE_CONFIG_H */
57 #define PASSWD_MAP "/etc/passwd"
59 /* forward declarations */
60 int passwd_init(mnt_map *m, char *map, time_t *tp);
61 int passwd_search(mnt_map *m, char *map, char *key, char **pval, time_t *tp);
65 * Nothing to probe - check the map name is PASSWD_MAP.
68 passwd_init(mnt_map *m, char *map, time_t *tp)
73 * Recognize the old format "PASSWD_MAP"
74 * Uses default return string
75 * "type:=nfs;rfs:=/${var0}/${var1};rhost:=${var1};sublink:=${var2};fs:=${autodir}${var3}"
77 if (STREQ(map, PASSWD_MAP))
80 * Recognize the new format "PASSWD_MAP:pval-format"
82 if (!NSTREQ(map, PASSWD_MAP, sizeof(PASSWD_MAP) - 1))
84 if (map[sizeof(PASSWD_MAP)-1] != ':')
92 * Grab the entry via the getpwname routine
93 * Modify time is ignored by passwd - XXX
96 passwd_search(mnt_map *m, char *map, char *key, char **pval, time_t *tp)
101 if (STREQ(key, "/defaults")) {
102 *pval = strdup("type:=nfs");
109 * We chop the home directory up as follows:
110 * /anydir/dom1/dom2/dom3/user
113 * rfs:=/anydir/dom3;rhost:=dom3.dom2.dom1;sublink:=user
115 * var0:=pw-prefix:=anydir
116 * var1:=pw-rhost:=dom3.dom2.dom1
117 * var2:=pw-user:=user
118 * var3:=pw-home:=/anydir/dom1/dom2/dom3/user
120 * This allows cross-domain entries in your passwd file.
121 * ... but forget about security!
125 char val[MAXPATHLEN];
126 char rhost[MAXHOSTNAMELEN];
127 dir = strdup(pw->pw_dir);
130 * Find user name. If no / then Invalid...
132 user = strrchr(dir, '/');
138 * Find start of host "path". If no / then Invalid...
140 p = strchr(dir + 1, '/');
146 * At this point, p is dom1/dom2/dom3
147 * Copy, backwards, into rhost replacing
154 strcat(rhost, q + 1);
165 if (*rhost == '\0' || *user == '\0' || *dir == '\0')
169 * Make up return string
171 q = strchr(rhost, '.');
174 p = strchr(map, ':');
178 p = "type:=nfs;rfs:=/${var0}/${var1};rhost:=${var1};sublink:=${var2};fs:=${autodir}${var3}";
179 sprintf(val, "var0:=%s;var1:=%s;var2:=%s;var3:=%s;%s",
180 dir+1, rhost, user, pw->pw_dir, p);
182 dlog("passwd_search: map=%s key=%s -> %s", map, key, val);