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
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
|
/*
* Copyright (c) 1993-1996,1998-2003 Todd C. Miller <Todd.Miller@courtesan.com>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* 4. Products derived from this software may not be called "Sudo" nor
* may "Sudo" appear in their names without specific prior written
* permission from the author.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
* THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* 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.
*
* $Sudo: sudo.h,v 1.194 2003/04/16 00:42:10 millert Exp $
*/
#ifndef _SUDO_SUDO_H
#define _SUDO_SUDO_H
#include <pathnames.h>
#include "compat.h"
#include "defaults.h"
#include "logging.h"
/*
* Info pertaining to the invoking user.
*/
struct sudo_user {
struct passwd *pw;
struct passwd *_runas_pw;
char *path;
char *shell;
char *tty;
char cwd[MAXPATHLEN];
char *host;
char *shost;
char **runas;
char *prompt;
char *cmnd_safe;
char *cmnd;
char *cmnd_args;
char *class_name;
};
/*
* Return values for sudoers_lookup(), also used as arguments for log_auth()
* Note: cannot use '0' as a value here.
*/
/* XXX - VALIDATE_SUCCESS and VALIDATE_FAILURE instead? */
#define VALIDATE_ERROR 0x01
#define VALIDATE_OK 0x02
#define VALIDATE_NOT_OK 0x04
#define FLAG_NOPASS 0x10
#define FLAG_NO_USER 0x20
#define FLAG_NO_HOST 0x40
#define FLAG_NO_CHECK 0x80
/*
* Boolean values
*/
#undef TRUE
#define TRUE 1
#undef FALSE
#define FALSE 0
/*
* find_path()/load_cmnd() return values
*/
#define FOUND 1
#define NOT_FOUND 0
#define NOT_FOUND_DOT -1
/*
* Various modes sudo can be in (based on arguments) in octal
*/
#define MODE_RUN 000001
#define MODE_VALIDATE 000002
#define MODE_INVALIDATE 000004
#define MODE_KILL 000010
#define MODE_VERSION 000020
#define MODE_HELP 000040
#define MODE_LIST 000100
#define MODE_LISTDEFS 000200
#define MODE_BACKGROUND 000400
#define MODE_SHELL 001000
#define MODE_IMPLIED_SHELL 002000
#define MODE_RESET_HOME 004000
#define MODE_PRESERVE_GROUPS 010000
/*
* Used with set_perms()
*/
#define PERM_ROOT 0x00
#define PERM_FULL_ROOT 0x01
#define PERM_USER 0x02
#define PERM_FULL_USER 0x03
#define PERM_SUDOERS 0x04
#define PERM_RUNAS 0x05
#define PERM_TIMESTAMP 0x06
/*
* Shortcuts for sudo_user contents.
*/
#define user_name (sudo_user.pw->pw_name)
#define user_passwd (sudo_user.pw->pw_passwd)
#define user_uid (sudo_user.pw->pw_uid)
#define user_gid (sudo_user.pw->pw_gid)
#define user_dir (sudo_user.pw->pw_dir)
#define user_shell (sudo_user.shell)
#define user_tty (sudo_user.tty)
#define user_cwd (sudo_user.cwd)
#define user_runas (sudo_user.runas)
#define user_cmnd (sudo_user.cmnd)
#define user_args (sudo_user.cmnd_args)
#define user_path (sudo_user.path)
#define user_prompt (sudo_user.prompt)
#define user_host (sudo_user.host)
#define user_shost (sudo_user.shost)
#define safe_cmnd (sudo_user.cmnd_safe)
#define login_class (sudo_user.class_name)
#define runas_pw (sudo_user._runas_pw)
/*
* We used to use the system definition of PASS_MAX or _PASSWD_LEN,
* but that caused problems with various alternate authentication
* methods. So, we just define our own and assume that it is >= the
* system max.
*/
#define SUDO_PASS_MAX 256
/*
* Flags for lock_file()
*/
#define SUDO_LOCK 1 /* lock a file */
#define SUDO_TLOCK 2 /* test & lock a file (non-blocking) */
#define SUDO_UNLOCK 4 /* unlock a file */
/*
* Flags for sudoers_lookup:
* PASSWD_NEVER: user never has to give a passwd
* PASSWD_ALL: no passwd needed if all entries for host have NOPASSWD flag
* PASSWD_ANY: no passwd needed if any entry for host has a NOPASSWD flag
* PASSWD_ALWAYS: passwd always needed
*/
#define PWCHECK_NEVER 0x01
#define PWCHECK_ALL 0x02
#define PWCHECK_ANY 0x04
#define PWCHECK_ALWAYS 0x08
/*
* Flags for tgetpass()
*/
#define TGP_ECHO 0x01 /* leave echo on when reading passwd */
#define TGP_STDIN 0x02 /* read from stdin, not /dev/tty */
/*
* Function prototypes
*/
#define YY_DECL int yylex __P((void))
#ifndef HAVE_CLOSEFROM
void closefrom __P((int));
#endif
#ifndef HAVE_GETCWD
char *getcwd __P((char *, size_t size));
#endif
#ifndef HAVE_SNPRINTF
int snprintf __P((char *, size_t, const char *, ...));
#endif
#ifndef HAVE_VSNPRINTF
int vsnprintf __P((char *, size_t, const char *, va_list));
#endif
#ifndef HAVE_ASPRINTF
int asprintf __P((char **, const char *, ...));
#endif
#ifndef HAVE_VASPRINTF
int vasprintf __P((char **, const char *, va_list));
#endif
#ifndef HAVE_STRCASECMP
int strcasecmp __P((const char *, const char *));
#endif
#ifndef HAVE_STRLCAT
size_t strlcat __P((char *, const char *, size_t));
#endif
#ifndef HAVE_STRLCPY
size_t strlcpy __P((char *, const char *, size_t));
#endif
char *sudo_goodpath __P((const char *));
char *tgetpass __P((const char *, int, int));
int find_path __P((char *, char **, char *));
void check_user __P((void));
void verify_user __P((struct passwd *, char *));
int sudoers_lookup __P((int));
void set_perms_nosuid __P((int));
void set_perms_posix __P((int));
void set_perms_suid __P((int));
void remove_timestamp __P((int));
int check_secureware __P((char *));
void sia_attempt_auth __P((void));
void pam_attempt_auth __P((void));
int yyparse __P((void));
void pass_warn __P((FILE *));
VOID *emalloc __P((size_t));
VOID *emalloc2 __P((size_t, size_t));
VOID *erealloc __P((VOID *, size_t));
VOID *erealloc3 __P((VOID *, size_t, size_t));
char *estrdup __P((const char *));
int easprintf __P((char **, const char *, ...));
int evasprintf __P((char **, const char *, va_list));
void dump_defaults __P((void));
void dump_auth_methods __P((void));
void init_envtables __P((void));
int lock_file __P((int, int));
int touch __P((char *, time_t));
int user_is_exempt __P((void));
void set_fqdn __P((void));
char *sudo_getepw __P((struct passwd *));
int pam_prep_user __P((struct passwd *));
void zero_bytes __P((volatile VOID *, size_t));
YY_DECL;
/* Only provide extern declarations outside of sudo.c. */
#ifndef _SUDO_MAIN
extern struct sudo_user sudo_user;
extern struct passwd *auth_pw;
extern FILE *sudoers_fp;
extern int tgetpass_flags;
extern uid_t timestamp_uid;
extern void (*set_perms) __P((int));
#endif
extern int errno;
#endif /* _SUDO_SUDO_H */
|
