Annotation of embedaddon/sudo/plugins/sudoers/sudoers.h, revision 1.1.1.4
1.1 misho 1: /*
1.1.1.4 ! misho 2: * Copyright (c) 1993-1996, 1998-2005, 2007-2013
1.1 misho 3: * Todd C. Miller <Todd.Miller@courtesan.com>
4: *
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.
8: *
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.
16: *
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.
20: */
21:
1.1.1.4 ! misho 22: #ifndef _SUDOERS_SUDOERS_H
! 23: #define _SUDOERS_SUDOERS_H
1.1 misho 24:
25: #include <limits.h>
1.1.1.2 misho 26: #ifdef HAVE_STDBOOL_H
27: # include <stdbool.h>
28: #else
29: # include "compat/stdbool.h"
30: #endif /* HAVE_STDBOOL_H */
1.1 misho 31:
32: #include <pathnames.h>
33: #include "missing.h"
34: #include "error.h"
35: #include "alloc.h"
36: #include "list.h"
37: #include "fileops.h"
38: #include "defaults.h"
39: #include "logging.h"
40: #include "sudo_nss.h"
41: #include "sudo_plugin.h"
1.1.1.2 misho 42: #include "sudo_debug.h"
1.1 misho 43:
44: #define DEFAULT_TEXT_DOMAIN "sudoers"
45: #include "gettext.h"
46:
47: /*
48: * Password db and supplementary group IDs with associated group names.
49: */
50: struct group_list {
51: char **groups;
52: GETGROUPS_T *gids;
53: int ngroups;
54: int ngids;
55: };
56:
57: /*
58: * Info pertaining to the invoking user.
59: */
60: struct sudo_user {
61: struct passwd *pw;
62: struct passwd *_runas_pw;
63: struct group *_runas_gr;
64: struct stat *cmnd_stat;
65: char *name;
66: char *path;
67: char *tty;
68: char *ttypath;
69: char *host;
70: char *shost;
71: char *prompt;
72: char *cmnd;
73: char *cmnd_args;
74: char *cmnd_base;
75: char *cmnd_safe;
76: char *class_name;
77: char *krb5_ccname;
78: struct group_list *group_list;
79: char * const * env_vars;
80: #ifdef HAVE_SELINUX
81: char *role;
82: char *type;
83: #endif
1.1.1.3 misho 84: #ifdef HAVE_PRIV_SET
85: char *privs;
86: char *limitprivs;
87: #endif
1.1.1.4 ! misho 88: const char *cwd;
1.1 misho 89: char *iolog_file;
1.1.1.3 misho 90: GETGROUPS_T *gids;
91: int ngids;
1.1 misho 92: int closefrom;
93: int lines;
94: int cols;
1.1.1.3 misho 95: int flags;
1.1.1.4 ! misho 96: int max_groups;
! 97: mode_t umask;
1.1 misho 98: uid_t uid;
99: uid_t gid;
1.1.1.4 ! misho 100: pid_t sid;
1.1 misho 101: };
102:
103: /*
1.1.1.3 misho 104: * sudo_user flag values
105: */
106: #define RUNAS_USER_SPECIFIED 0x01
107: #define RUNAS_GROUP_SPECIFIED 0x02
108:
109: /*
1.1 misho 110: * Return values for sudoers_lookup(), also used as arguments for log_auth()
111: * Note: cannot use '0' as a value here.
112: */
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
1.1.1.3 misho 121: #define FLAG_NON_INTERACTIVE 0x100
122: #define FLAG_BAD_PASSWORD 0x200
123: #define FLAG_AUTH_ERROR 0x400
1.1 misho 124:
125: /*
126: * find_path()/load_cmnd() return values
127: */
128: #define FOUND 0
129: #define NOT_FOUND 1
130: #define NOT_FOUND_DOT 2
131:
132: /*
133: * Various modes sudo can be in (based on arguments) in hex
134: */
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
146:
147: /* Mode flags */
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
157:
158: /*
159: * Used with set_perms()
160: */
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
170:
171: /*
172: * Shortcuts for sudo_user contents.
173: */
174: #define user_name (sudo_user.name)
175: #define user_uid (sudo_user.uid)
176: #define user_gid (sudo_user.gid)
1.1.1.4 ! misho 177: #define user_sid (sudo_user.sid)
! 178: #define user_umask (sudo_user.umask)
1.1 misho 179: #define user_passwd (sudo_user.pw->pw_passwd)
180: #define user_dir (sudo_user.pw->pw_dir)
1.1.1.3 misho 181: #define user_gids (sudo_user.gids)
182: #define user_ngids (sudo_user.ngids)
1.1 misho 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)
1.1.1.3 misho 203: #define runas_privs (sudo_user.privs)
204: #define runas_limitprivs (sudo_user.limitprivs)
1.1 misho 205:
206: #ifdef __TANDEM
1.1.1.4 ! misho 207: # define ROOT_UID 65535
1.1 misho 208: #else
1.1.1.4 ! misho 209: # define ROOT_UID 0
1.1 misho 210: #endif
1.1.1.4 ! misho 211: #define ROOT_GID 0
1.1 misho 212:
213: /*
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
217: * system max.
218: */
219: #define SUDO_PASS_MAX 256
220:
221: struct lbuf;
222: struct passwd;
223: struct stat;
224: struct timeval;
225:
226: /*
227: * Function prototypes
228: */
1.1.1.4 ! misho 229: #define YY_DECL int sudoerslex(void)
1.1 misho 230:
231: /* goodpath.c */
1.1.1.2 misho 232: bool sudo_goodpath(const char *, struct stat *);
1.1 misho 233:
234: /* findpath.c */
235: int find_path(char *, char **, struct stat *, char *, int);
236:
237: /* check.c */
1.1.1.4 ! misho 238: int check_user(int validate, int mode);
1.1.1.2 misho 239: bool user_is_exempt(void);
1.1 misho 240:
1.1.1.4 ! misho 241: /* prompt.c */
! 242: char *expand_prompt(const char *old_prompt, const char *user, const char *host);
! 243:
! 244: /* timestamp.c */
! 245: void remove_timestamp(bool);
! 246: bool set_lectured(void);
! 247:
1.1 misho 248: /* sudo_auth.c */
1.1.1.4 ! misho 249: bool sudo_auth_needs_end_session(void);
1.1.1.3 misho 250: int verify_user(struct passwd *pw, char *prompt, int validated);
1.1.1.2 misho 251: int sudo_auth_begin_session(struct passwd *pw, char **user_env[]);
252: int sudo_auth_end_session(struct passwd *pw);
1.1 misho 253: int sudo_auth_init(struct passwd *pw);
254: int sudo_auth_cleanup(struct passwd *pw);
255:
256: /* parse.c */
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 *);
266:
267: /* set_perms.c */
268: void rewind_perms(void);
269: int set_perms(int);
270: void restore_perms(void);
271: int pam_prep_user(struct passwd *);
272:
273: /* gram.y */
1.1.1.4 ! misho 274: int sudoersparse(void);
1.1 misho 275:
276: /* toke.l */
277: YY_DECL;
1.1.1.2 misho 278: extern const char *sudoers_file;
279: extern mode_t sudoers_mode;
280: extern uid_t sudoers_uid;
281: extern gid_t sudoers_gid;
1.1 misho 282:
283: /* defaults.c */
284: void dump_defaults(void);
285: void dump_auth_methods(void);
286:
287: /* getspwuid.c */
288: char *sudo_getepw(const struct passwd *);
289:
290: /* zero_bytes.c */
291: void zero_bytes(volatile void *, size_t);
292:
293: /* sudo_nss.c */
294: void display_privs(struct sudo_nss_list *, struct passwd *);
1.1.1.2 misho 295: bool display_cmnd(struct sudo_nss_list *, struct passwd *);
1.1 misho 296:
297: /* pwutil.c */
1.1.1.3 misho 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);
1.1.1.4 ! misho 306: struct passwd *sudo_mkpwent(const char *user, uid_t uid, gid_t gid, const char *home, const char *shell);
1.1.1.3 misho 307: struct passwd *sudo_getpwnam(const char *);
308: struct passwd *sudo_getpwuid(uid_t);
1.1 misho 309: void sudo_endgrent(void);
310: void sudo_endpwent(void);
311: void sudo_endspent(void);
1.1.1.3 misho 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 *);
1.1.1.4 ! misho 316: void sudo_set_grlist(struct passwd *pw, char * const *groups,
! 317: char * const *gids);
1.1.1.3 misho 318: void sudo_setgrent(void);
319: void sudo_setpwent(void);
320: void sudo_setspent(void);
1.1 misho 321:
322: /* timestr.c */
323: char *get_timestr(time_t, int);
324:
325: /* atobool.c */
326: int atobool(const char *str);
327:
328: /* boottime.c */
329: int get_boottime(struct timeval *);
330:
331: /* iolog.c */
1.1.1.4 ! misho 332: int io_set_max_sessid(const char *sessid);
1.1.1.3 misho 333: void io_nextid(char *iolog_dir, char *iolog_dir_fallback, char sessid[7]);
1.1 misho 334:
335: /* iolog_path.c */
336: char *expand_iolog_path(const char *prefix, const char *dir, const char *file,
337: char **slashp);
338:
339: /* env.c */
340: char **env_get(void);
1.1.1.2 misho 341: void env_merge(char * const envp[], bool overwrite);
1.1 misho 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[]);
1.1.1.2 misho 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);
1.1 misho 355:
356: /* fmt_string.c */
357: char *fmt_string(const char *, const char *);
358:
359: /* sudoers.c */
1.1.1.2 misho 360: FILE *open_sudoers(const char *, bool, bool *);
1.1.1.4 ! misho 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);
! 364:
! 365: /* policy.c */
! 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;
1.1 misho 370:
371: /* aix.c */
372: void aix_restoreauthdb(void);
373: void aix_setauthdb(char *user);
374:
375: /* group_plugin.c */
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);
380:
381: /* setgroups.c */
382: int sudo_setgroups(int ngids, const GETGROUPS_T *gids);
383:
384: #ifndef _SUDO_MAIN
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;
391: #endif
392:
1.1.1.4 ! misho 393: #endif /* _SUDOERS_SUDOERS_H */
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