2 * Copyright (c) 1993-1996, 1998-2005, 2007-2013
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.
22 #ifndef _SUDOERS_SUDOERS_H
23 #define _SUDOERS_SUDOERS_H
29 # include "compat/stdbool.h"
30 #endif /* HAVE_STDBOOL_H */
32 #include <pathnames.h>
41 #include "sudo_plugin.h"
42 #include "sudo_debug.h"
44 #define DEFAULT_TEXT_DOMAIN "sudoers"
48 * Password db and supplementary group IDs with associated group names.
58 * Info pertaining to the invoking user.
62 struct passwd *_runas_pw;
63 struct group *_runas_gr;
64 struct stat *cmnd_stat;
78 struct group_list *group_list;
79 char * const * env_vars;
104 * sudo_user flag values
106 #define RUNAS_USER_SPECIFIED 0x01
107 #define RUNAS_GROUP_SPECIFIED 0x02
110 * Return values for sudoers_lookup(), also used as arguments for log_auth()
111 * Note: cannot use '0' as a value here.
113 /* XXX - VALIDATE_SUCCESS and VALIDATE_FAILURE instead? */
114 #define VALIDATE_ERROR 0x001
115 #define VALIDATE_OK 0x002
116 #define VALIDATE_NOT_OK 0x004
117 #define FLAG_CHECK_USER 0x010
118 #define FLAG_NO_USER 0x020
119 #define FLAG_NO_HOST 0x040
120 #define FLAG_NO_CHECK 0x080
121 #define FLAG_NON_INTERACTIVE 0x100
122 #define FLAG_BAD_PASSWORD 0x200
123 #define FLAG_AUTH_ERROR 0x400
126 * find_path()/load_cmnd() return values
130 #define NOT_FOUND_DOT 2
133 * Various modes sudo can be in (based on arguments) in hex
135 #define MODE_RUN 0x00000001
136 #define MODE_EDIT 0x00000002
137 #define MODE_VALIDATE 0x00000004
138 #define MODE_INVALIDATE 0x00000008
139 #define MODE_KILL 0x00000010
140 #define MODE_VERSION 0x00000020
141 #define MODE_HELP 0x00000040
142 #define MODE_LIST 0x00000080
143 #define MODE_CHECK 0x00000100
144 #define MODE_LISTDEFS 0x00000200
145 #define MODE_MASK 0x0000ffff
148 #define MODE_BACKGROUND 0x00010000 /* XXX - unused */
149 #define MODE_SHELL 0x00020000
150 #define MODE_LOGIN_SHELL 0x00040000
151 #define MODE_IMPLIED_SHELL 0x00080000
152 #define MODE_RESET_HOME 0x00100000
153 #define MODE_PRESERVE_GROUPS 0x00200000
154 #define MODE_PRESERVE_ENV 0x00400000
155 #define MODE_NONINTERACTIVE 0x00800000
156 #define MODE_IGNORE_TICKET 0x01000000
159 * Used with set_perms()
161 #define PERM_INITIAL 0x00
162 #define PERM_ROOT 0x01
163 #define PERM_USER 0x02
164 #define PERM_FULL_USER 0x03
165 #define PERM_SUDOERS 0x04
166 #define PERM_RUNAS 0x05
167 #define PERM_TIMESTAMP 0x06
168 #define PERM_NOEXIT 0x10 /* flag */
169 #define PERM_MASK 0xf0
172 * Shortcuts for sudo_user contents.
174 #define user_name (sudo_user.name)
175 #define user_uid (sudo_user.uid)
176 #define user_gid (sudo_user.gid)
177 #define user_sid (sudo_user.sid)
178 #define user_umask (sudo_user.umask)
179 #define user_passwd (sudo_user.pw->pw_passwd)
180 #define user_dir (sudo_user.pw->pw_dir)
181 #define user_gids (sudo_user.gids)
182 #define user_ngids (sudo_user.ngids)
183 #define user_group_list (sudo_user.group_list)
184 #define user_tty (sudo_user.tty)
185 #define user_ttypath (sudo_user.ttypath)
186 #define user_cwd (sudo_user.cwd)
187 #define user_cmnd (sudo_user.cmnd)
188 #define user_args (sudo_user.cmnd_args)
189 #define user_base (sudo_user.cmnd_base)
190 #define user_stat (sudo_user.cmnd_stat)
191 #define user_path (sudo_user.path)
192 #define user_prompt (sudo_user.prompt)
193 #define user_host (sudo_user.host)
194 #define user_shost (sudo_user.shost)
195 #define user_ccname (sudo_user.krb5_ccname)
196 #define safe_cmnd (sudo_user.cmnd_safe)
197 #define login_class (sudo_user.class_name)
198 #define runas_pw (sudo_user._runas_pw)
199 #define runas_gr (sudo_user._runas_gr)
200 #define user_role (sudo_user.role)
201 #define user_type (sudo_user.type)
202 #define user_closefrom (sudo_user.closefrom)
203 #define runas_privs (sudo_user.privs)
204 #define runas_limitprivs (sudo_user.limitprivs)
207 # define ROOT_UID 65535
214 * We used to use the system definition of PASS_MAX or _PASSWD_LEN,
215 * but that caused problems with various alternate authentication
216 * methods. So, we just define our own and assume that it is >= the
219 #define SUDO_PASS_MAX 256
227 * Function prototypes
229 #define YY_DECL int sudoerslex(void)
232 bool sudo_goodpath(const char *, struct stat *);
235 int find_path(char *, char **, struct stat *, char *, int);
238 int check_user(int validate, int mode);
239 bool user_is_exempt(void);
242 char *expand_prompt(const char *old_prompt, const char *user, const char *host);
245 void remove_timestamp(bool);
246 bool set_lectured(void);
249 bool sudo_auth_needs_end_session(void);
250 int verify_user(struct passwd *pw, char *prompt, int validated);
251 int sudo_auth_begin_session(struct passwd *pw, char **user_env[]);
252 int sudo_auth_end_session(struct passwd *pw);
253 int sudo_auth_init(struct passwd *pw);
254 int sudo_auth_cleanup(struct passwd *pw);
257 int sudo_file_open(struct sudo_nss *);
258 int sudo_file_close(struct sudo_nss *);
259 int sudo_file_setdefs(struct sudo_nss *);
260 int sudo_file_lookup(struct sudo_nss *, int, int);
261 int sudo_file_parse(struct sudo_nss *);
262 int sudo_file_display_cmnd(struct sudo_nss *, struct passwd *);
263 int sudo_file_display_defaults(struct sudo_nss *, struct passwd *, struct lbuf *);
264 int sudo_file_display_bound_defaults(struct sudo_nss *, struct passwd *, struct lbuf *);
265 int sudo_file_display_privs(struct sudo_nss *, struct passwd *, struct lbuf *);
268 void rewind_perms(void);
270 void restore_perms(void);
271 int pam_prep_user(struct passwd *);
274 int sudoersparse(void);
278 extern const char *sudoers_file;
279 extern mode_t sudoers_mode;
280 extern uid_t sudoers_uid;
281 extern gid_t sudoers_gid;
284 void dump_defaults(void);
285 void dump_auth_methods(void);
288 char *sudo_getepw(const struct passwd *);
291 void zero_bytes(volatile void *, size_t);
294 void display_privs(struct sudo_nss_list *, struct passwd *);
295 bool display_cmnd(struct sudo_nss_list *, struct passwd *);
298 __dso_public struct group *sudo_getgrgid(gid_t);
299 __dso_public struct group *sudo_getgrnam(const char *);
300 __dso_public void sudo_gr_addref(struct group *);
301 __dso_public void sudo_gr_delref(struct group *);
302 bool user_in_group(struct passwd *, const char *);
303 struct group *sudo_fakegrnam(const char *);
304 struct group_list *sudo_get_grlist(struct passwd *pw);
305 struct passwd *sudo_fakepwnam(const char *, gid_t);
306 struct passwd *sudo_mkpwent(const char *user, uid_t uid, gid_t gid, const char *home, const char *shell);
307 struct passwd *sudo_getpwnam(const char *);
308 struct passwd *sudo_getpwuid(uid_t);
309 void sudo_endgrent(void);
310 void sudo_endpwent(void);
311 void sudo_endspent(void);
312 void sudo_grlist_addref(struct group_list *);
313 void sudo_grlist_delref(struct group_list *);
314 void sudo_pw_addref(struct passwd *);
315 void sudo_pw_delref(struct passwd *);
316 void sudo_set_grlist(struct passwd *pw, char * const *groups,
318 void sudo_setgrent(void);
319 void sudo_setpwent(void);
320 void sudo_setspent(void);
323 char *get_timestr(time_t, int);
326 int atobool(const char *str);
329 int get_boottime(struct timeval *);
332 int io_set_max_sessid(const char *sessid);
333 void io_nextid(char *iolog_dir, char *iolog_dir_fallback, char sessid[7]);
336 char *expand_iolog_path(const char *prefix, const char *dir, const char *file,
340 char **env_get(void);
341 void env_merge(char * const envp[], bool overwrite);
342 void env_init(char * const envp[]);
343 void init_envtables(void);
344 void insert_env_vars(char * const envp[]);
345 void read_env_file(const char *, int);
346 void rebuild_env(void);
347 void validate_env_vars(char * const envp[]);
348 int sudo_setenv(const char *var, const char *val, int overwrite);
349 int sudo_unsetenv(const char *var);
350 char *sudo_getenv(const char *name);
351 int sudoers_hook_getenv(const char *name, char **value, void *closure);
352 int sudoers_hook_putenv(char *string, void *closure);
353 int sudoers_hook_setenv(const char *name, const char *value, int overwrite, void *closure);
354 int sudoers_hook_unsetenv(const char *name, void *closure);
357 char *fmt_string(const char *, const char *);
360 FILE *open_sudoers(const char *, bool, bool *);
361 int sudoers_policy_init(void *info, char * const envp[]);
362 int sudoers_policy_main(int argc, char * const argv[], int pwflag, char *env_add[], void *closure);
363 void sudoers_cleanup(void);
366 int sudoers_policy_deserialize_info(void *v, char **runas_user, char **runas_group);
367 int sudoers_policy_exec_setup(char *argv[], char *envp[], mode_t cmnd_umask, char *iolog_path, void *v);
368 extern const char *path_ldap_conf;
369 extern const char *path_ldap_secret;
372 void aix_restoreauthdb(void);
373 void aix_setauthdb(char *user);
376 int group_plugin_load(char *plugin_info);
377 void group_plugin_unload(void);
378 int group_plugin_query(const char *user, const char *group,
379 const struct passwd *pwd);
382 int sudo_setgroups(int ngids, const GETGROUPS_T *gids);
385 extern struct sudo_user sudo_user;
386 extern struct passwd *list_pw;
387 extern int long_list;
388 extern int sudo_mode;
389 extern uid_t timestamp_uid;
390 extern sudo_conv_t sudo_conv;
393 #endif /* _SUDOERS_SUDOERS_H */