2 * Copyright (c) 1993-1996, 1998-2005, 2007-2009
3 * Todd C. Miller <Todd.Miller@courtesan.com>
5 * Permission to use, copy, modify, and distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 * Sponsored in part by the Defense Advanced Research Projects
18 * Agency (DARPA) and Air Force Research Laboratory, Air Force
19 * Materiel Command, USAF, under agreement number F39502-99-1-0512.
25 #include <pathnames.h>
35 * Info pertaining to the invoking user.
39 struct passwd *_runas_pw;
40 struct group *_runas_gr;
41 struct stat *cmnd_stat;
59 struct list_member *env_vars;
68 * Return values for sudoers_lookup(), also used as arguments for log_auth()
69 * Note: cannot use '0' as a value here.
71 /* XXX - VALIDATE_SUCCESS and VALIDATE_FAILURE instead? */
72 #define VALIDATE_ERROR 0x001
73 #define VALIDATE_OK 0x002
74 #define VALIDATE_NOT_OK 0x004
75 #define FLAG_CHECK_USER 0x010
76 #define FLAG_NO_USER 0x020
77 #define FLAG_NO_HOST 0x040
78 #define FLAG_NO_CHECK 0x080
81 * Pseudo-boolean values
89 * find_path()/load_cmnd() return values
93 #define NOT_FOUND_DOT -1
96 * Various modes sudo can be in (based on arguments) in hex
98 #define MODE_RUN 0x00000001
99 #define MODE_EDIT 0x00000002
100 #define MODE_VALIDATE 0x00000004
101 #define MODE_INVALIDATE 0x00000008
102 #define MODE_KILL 0x00000010
103 #define MODE_VERSION 0x00000020
104 #define MODE_HELP 0x00000040
105 #define MODE_LIST 0x00000080
106 #define MODE_CHECK 0x00000100
107 #define MODE_LISTDEFS 0x00000200
108 #define MODE_MASK 0x0000ffff
111 #define MODE_BACKGROUND 0x00010000
112 #define MODE_SHELL 0x00020000
113 #define MODE_LOGIN_SHELL 0x00040000
114 #define MODE_IMPLIED_SHELL 0x00080000
115 #define MODE_RESET_HOME 0x00100000
116 #define MODE_PRESERVE_GROUPS 0x00200000
117 #define MODE_PRESERVE_ENV 0x00400000
118 #define MODE_NONINTERACTIVE 0x00800000
121 * Used with set_perms()
123 #define PERM_ROOT 0x00
124 #define PERM_USER 0x01
125 #define PERM_FULL_USER 0x02
126 #define PERM_SUDOERS 0x03
127 #define PERM_RUNAS 0x04
128 #define PERM_FULL_RUNAS 0x05
129 #define PERM_TIMESTAMP 0x06
130 #define PERM_NOEXIT 0x10 /* flag */
131 #define PERM_MASK 0xf0
134 * Shortcuts for sudo_user contents.
136 #define user_name (sudo_user.pw->pw_name)
137 #define user_passwd (sudo_user.pw->pw_passwd)
138 #define user_uid (sudo_user.pw->pw_uid)
139 #define user_gid (sudo_user.pw->pw_gid)
140 #define user_dir (sudo_user.pw->pw_dir)
141 #define user_shell (sudo_user.shell)
142 #define user_ngroups (sudo_user.ngroups)
143 #define user_groups (sudo_user.groups)
144 #define user_tty (sudo_user.tty)
145 #define user_ttypath (sudo_user.ttypath)
146 #define user_cwd (sudo_user.cwd)
147 #define user_cmnd (sudo_user.cmnd)
148 #define user_args (sudo_user.cmnd_args)
149 #define user_base (sudo_user.cmnd_base)
150 #define user_stat (sudo_user.cmnd_stat)
151 #define user_path (sudo_user.path)
152 #define user_prompt (sudo_user.prompt)
153 #define user_host (sudo_user.host)
154 #define user_shost (sudo_user.shost)
155 #define user_ccname (sudo_user.krb5_ccname)
156 #define user_display (sudo_user.display)
157 #define user_askpass (sudo_user.askpass)
158 #define safe_cmnd (sudo_user.cmnd_safe)
159 #define login_class (sudo_user.class_name)
160 #define runas_pw (sudo_user._runas_pw)
161 #define runas_gr (sudo_user._runas_gr)
162 #define user_role (sudo_user.role)
163 #define user_type (sudo_user.type)
166 * We used to use the system definition of PASS_MAX or _PASSWD_LEN,
167 * but that caused problems with various alternate authentication
168 * methods. So, we just define our own and assume that it is >= the
171 #define SUDO_PASS_MAX 256
174 * Flags for lock_file()
176 #define SUDO_LOCK 1 /* lock a file */
177 #define SUDO_TLOCK 2 /* test & lock a file (non-blocking) */
178 #define SUDO_UNLOCK 4 /* unlock a file */
181 * Flags for tgetpass()
183 #define TGP_ECHO 0x01 /* leave echo on when reading passwd */
184 #define TGP_STDIN 0x02 /* read from stdin, not /dev/tty */
185 #define TGP_ASKPASS 0x04 /* read from askpass helper program */
193 * Function prototypes
195 #define YY_DECL int yylex __P((void))
197 #ifndef HAVE_CLOSEFROM
198 void closefrom __P((int));
201 char *getcwd __P((char *, size_t size));
204 int utimes __P((const char *, const struct timeval *));
207 int futimes __P((int, const struct timeval *));
209 #ifndef HAVE_SNPRINTF
210 int snprintf __P((char *, size_t, const char *, ...))
213 #ifndef HAVE_VSNPRINTF
214 int vsnprintf __P((char *, size_t, const char *, va_list))
217 #ifndef HAVE_ASPRINTF
218 int asprintf __P((char **, const char *, ...))
221 #ifndef HAVE_VASPRINTF
222 int vasprintf __P((char **, const char *, va_list))
225 #ifndef HAVE_STRCASECMP
226 int strcasecmp __P((const char *, const char *));
229 size_t strlcat __P((char *, const char *, size_t));
232 size_t strlcpy __P((char *, const char *, size_t));
235 void *memrchr __P((const void *, int, size_t));
238 int mkstemp __P((char *));
241 int setenv __P((const char *, const char *, int));
243 #ifndef HAVE_UNSETENV
244 int unsetenv __P((const char *));
246 char *sudo_goodpath __P((const char *, struct stat *));
247 char *tgetpass __P((const char *, int, int));
248 int find_path __P((char *, char **, struct stat *, char *));
249 int tty_present __P((void));
250 void check_user __P((int, int));
251 void verify_user __P((struct passwd *, char *));
253 int sudo_ldap_open __P((struct sudo_nss *));
254 int sudo_ldap_close __P((struct sudo_nss *));
255 int sudo_ldap_setdefs __P((struct sudo_nss *));
256 int sudo_ldap_lookup __P((struct sudo_nss *, int, int));
257 int sudo_ldap_parse __P((struct sudo_nss *));
258 int sudo_ldap_display_cmnd __P((struct sudo_nss *, struct passwd *));
259 int sudo_ldap_display_defaults __P((struct sudo_nss *, struct passwd *, struct lbuf *));
260 int sudo_ldap_display_bound_defaults __P((struct sudo_nss *, struct passwd *, struct lbuf *));
261 int sudo_ldap_display_privs __P((struct sudo_nss *, struct passwd *, struct lbuf *));
263 int sudo_file_open __P((struct sudo_nss *));
264 int sudo_file_close __P((struct sudo_nss *));
265 int sudo_file_setdefs __P((struct sudo_nss *));
266 int sudo_file_lookup __P((struct sudo_nss *, int, int));
267 int sudo_file_parse __P((struct sudo_nss *));
268 int sudo_file_display_cmnd __P((struct sudo_nss *, struct passwd *));
269 int sudo_file_display_defaults __P((struct sudo_nss *, struct passwd *, struct lbuf *));
270 int sudo_file_display_bound_defaults __P((struct sudo_nss *, struct passwd *, struct lbuf *));
271 int sudo_file_display_privs __P((struct sudo_nss *, struct passwd *, struct lbuf *));
272 int set_perms __P((int));
273 void remove_timestamp __P((int));
274 int check_secureware __P((char *));
275 void sia_attempt_auth __P((void));
276 void pam_attempt_auth __P((void));
277 int yyparse __P((void));
278 void pass_warn __P((FILE *));
279 void *emalloc __P((size_t));
280 void *emalloc2 __P((size_t, size_t));
281 void *erealloc __P((void *, size_t));
282 void *erealloc3 __P((void *, size_t, size_t));
283 char *estrdup __P((const char *));
284 int easprintf __P((char **, const char *, ...))
286 int evasprintf __P((char **, const char *, va_list))
288 void efree __P((void *));
289 void dump_defaults __P((void));
290 void dump_auth_methods __P((void));
291 void init_envtables __P((void));
292 void read_env_file __P((const char *, int));
293 int lock_file __P((int, int));
294 int touch __P((int, char *, struct timespec *));
295 int user_is_exempt __P((void));
296 void set_fqdn __P((void));
297 char *sudo_getepw __P((const struct passwd *));
298 int pam_prep_user __P((struct passwd *));
299 void zero_bytes __P((volatile void *, size_t));
300 int gettime __P((struct timespec *));
301 FILE *open_sudoers __P((const char *, int, int *));
302 void display_privs __P((struct sudo_nss_list *, struct passwd *));
303 int display_cmnd __P((struct sudo_nss_list *, struct passwd *));
304 int get_ttycols __P((void));
305 char *sudo_parseln __P((FILE *));
306 void sudo_setgrent __P((void));
307 void sudo_endgrent __P((void));
308 void sudo_setpwent __P((void));
309 void sudo_endpwent __P((void));
310 void sudo_setspent __P((void));
311 void sudo_endspent __P((void));
312 void cleanup __P((int));
313 struct passwd *sudo_getpwnam __P((const char *));
314 struct passwd *sudo_fakepwnam __P((const char *, gid_t));
315 struct passwd *sudo_getpwuid __P((uid_t));
316 struct group *sudo_getgrnam __P((const char *));
317 struct group *sudo_fakegrnam __P((const char *));
318 struct group *sudo_getgrgid __P((gid_t));
320 void selinux_exec __P((char *, char *, char **, int));
322 #ifdef HAVE_GETUSERATTR
323 void aix_setlimits __P((char *));
327 /* Only provide extern declarations outside of sudo.c. */
329 extern struct sudo_user sudo_user;
330 extern struct passwd *auth_pw, *list_pw;
332 extern int tgetpass_flags;
333 extern int long_list;
334 extern uid_t timestamp_uid;
340 #endif /* _SUDO_SUDO_H */