1 /* cvm/getpwnam.c - Handles getpwnam+getspnam+getuserpw combinations
2 * Copyright (C) 2010 Bruce Guenter <bruce@untroubled.org>
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17 */
18 #include <ctype.h>
19 #include <errno.h>
20 #include <pwd.h>
21 #include <stdlib.h>
22 #include <string.h>
23
24 #include <bglibs/sysdeps.h>
25
26 #include "module.h"
27
28 #ifdef HASSPNAM
29 #include <shadow.h>
30 static struct spwd* spw;
31 #endif
32
33 #ifdef HASUSERPW
34 #include <userpw.h>
35 static struct userpw* uwp;
36 #endif
37
38 static char* actbuf = 0;
39 static unsigned actlen = 0;
40
copyact(const char * account)41 static const char* copyact(const char* account)
42 {
43 unsigned len;
44 char *ptr;
45 if ((len = strlen(account)) > actlen) {
46 if ((actbuf = realloc(actbuf, len+1)) == 0) return 0;
47 actlen = len;
48 }
49 for (ptr = actbuf; *account != 0; ++ptr, ++account)
50 *ptr = isupper(*account) ? tolower(*account) : *account;
51 *ptr = 0;
52 return actbuf;
53 }
54
cvm_getpwnam(const char * account,struct passwd ** pwp)55 int cvm_getpwnam(const char* account, struct passwd** pwp)
56 {
57 struct passwd* pw;
58
59 account = copyact(account);
60 if ((pw = getpwnam(account)) == 0)
61 return (errno == ETXTBSY) ? CVME_IO : CVME_PERMFAIL;
62
63 #ifdef HASUSERPW
64 if ((upw = getuserpw(account)) == 0) {
65 if (errno == ETXTBSY) return CVME_IO;
66 }
67 else if (upw->upw_passwd)
68 pw->pw_passwd = upw->upw_passwd;
69 #endif
70
71 #ifdef HASSPNAM
72 if ((spw = getspnam(account)) == 0) {
73 if (errno == ETXTBSY) return CVME_IO;
74 }
75 else if (spw->sp_pwdp)
76 pw->pw_passwd = spw->sp_pwdp;
77 #endif
78
79 *pwp = pw;
80 return 0;
81 }
82