summaryrefslogtreecommitdiffstats
path: root/plugins/sudoers/getspwuid.c
blob: da7776995674bf3c6083cf2e925bc00e01d976c7 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
/*
 * Copyright (c) 1996, 1998-2005, 2010-2012, 2014-2015
 *	Todd C. Miller <Todd.Miller@sudo.ws>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 *
 * Sponsored in part by the Defense Advanced Research Projects
 * Agency (DARPA) and Air Force Research Laboratory, Air Force
 * Materiel Command, USAF, under agreement number F39502-99-1-0512.
 */

/*
 * This is an open source non-commercial project. Dear PVS-Studio, please check it.
 * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
 */

#include <config.h>

#include <sys/types.h>
#include <sys/stat.h>
#include <stdio.h>
#include <stdlib.h>
#ifdef HAVE_STRING_H
# include <string.h>
#endif /* HAVE_STRING_H */
#ifdef HAVE_STRINGS_H
# include <strings.h>
#endif /* HAVE_STRINGS_H */
#include <unistd.h>
#include <pwd.h>
#include <grp.h>
#ifdef HAVE_GETSPNAM
# include <shadow.h>
#endif /* HAVE_GETSPNAM */
#ifdef HAVE_GETPRPWNAM
# ifdef __hpux
#  undef MAXINT
#  include <hpsecurity.h>
# else
#  include <sys/security.h>
# endif /* __hpux */
# include <prot.h>
#endif /* HAVE_GETPRPWNAM */

#include "sudoers.h"

/*
 * Exported for auth/secureware.c
 */
#if defined(HAVE_GETPRPWNAM) && defined(__alpha)
int crypt_type = INT_MAX;
#endif /* HAVE_GETPRPWNAM && __alpha */

/*
 * Return a copy of the encrypted password for the user described by pw.
 * If shadow passwords are in use, look in the shadow file.
 */
char *
sudo_getepw(const struct passwd *pw)
{
    char *epw = NULL;
    debug_decl(sudo_getepw, SUDOERS_DEBUG_AUTH)

    /* If there is a function to check for shadow enabled, use it... */
#ifdef HAVE_ISCOMSEC
    if (!iscomsec())
	goto done;
#endif /* HAVE_ISCOMSEC */

#ifdef HAVE_GETPWNAM_SHADOW
    {
	struct passwd *spw;

	if ((spw = getpwnam_shadow(pw->pw_name)) != NULL)
	    epw = spw->pw_passwd;
    }
#endif /* HAVE_GETPWNAM_SHADOW */
#ifdef HAVE_GETPRPWNAM
    {
	struct pr_passwd *spw;

	if ((spw = getprpwnam(pw->pw_name)) && spw->ufld.fd_encrypt) {
# ifdef __alpha
	    crypt_type = spw->ufld.fd_oldcrypt;
# endif /* __alpha */
	    epw = spw->ufld.fd_encrypt;
	}
    }
#endif /* HAVE_GETPRPWNAM */
#ifdef HAVE_GETSPNAM
    {
	struct spwd *spw;

	if ((spw = getspnam(pw->pw_name)) && spw->sp_pwdp)
	    epw = spw->sp_pwdp;
    }
#endif /* HAVE_GETSPNAM */

#if defined(HAVE_ISCOMSEC)
done:
#endif
    /* If no shadow password, fall back on regular password. */
    debug_return_str(strdup(epw ? epw : pw->pw_passwd));
}

void
sudo_setspent(void)
{
    debug_decl(sudo_setspent, SUDOERS_DEBUG_AUTH)

#ifdef HAVE_GETPRPWNAM
    setprpwent();
#endif
#ifdef HAVE_GETSPNAM
    setspent();
#endif
    debug_return;
}

void
sudo_endspent(void)
{
    debug_decl(sudo_endspent, SUDOERS_DEBUG_AUTH)

#ifdef HAVE_GETPRPWNAM
    endprpwent();
#endif
#ifdef HAVE_GETSPNAM
    endspent();
#endif
    debug_return;
}