Annotation of embedaddon/sudo/plugins/sudoers/sudoers.h, revision 1.1.1.1
1.1 misho 1: /*
2: * Copyright (c) 1993-1996, 1998-2005, 2007-2011
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:
22: #ifndef _SUDO_SUDOERS_H
23: #define _SUDO_SUDOERS_H
24:
25: #include <limits.h>
26:
27: #include <pathnames.h>
28: #include "missing.h"
29: #include "error.h"
30: #include "alloc.h"
31: #include "list.h"
32: #include "fileops.h"
33: #include "defaults.h"
34: #include "logging.h"
35: #include "sudo_nss.h"
36: #include "sudo_plugin.h"
37:
38: #define DEFAULT_TEXT_DOMAIN "sudoers"
39: #include "gettext.h"
40:
41: /*
42: * Password db and supplementary group IDs with associated group names.
43: */
44: struct group_list {
45: char **groups;
46: GETGROUPS_T *gids;
47: int ngroups;
48: int ngids;
49: };
50:
51: /*
52: * Info pertaining to the invoking user.
53: */
54: struct sudo_user {
55: struct passwd *pw;
56: struct passwd *_runas_pw;
57: struct group *_runas_gr;
58: struct stat *cmnd_stat;
59: char *name;
60: char *path;
61: char *tty;
62: char *ttypath;
63: char *host;
64: char *shost;
65: char *prompt;
66: char *cmnd;
67: char *cmnd_args;
68: char *cmnd_base;
69: char *cmnd_safe;
70: char *class_name;
71: char *krb5_ccname;
72: struct group_list *group_list;
73: char * const * env_vars;
74: #ifdef HAVE_SELINUX
75: char *role;
76: char *type;
77: #endif
78: char *cwd;
79: char *iolog_file;
80: int closefrom;
81: int lines;
82: int cols;
83: uid_t uid;
84: uid_t gid;
85: };
86:
87: /*
88: * Return values for sudoers_lookup(), also used as arguments for log_auth()
89: * Note: cannot use '0' as a value here.
90: */
91: /* XXX - VALIDATE_SUCCESS and VALIDATE_FAILURE instead? */
92: #define VALIDATE_ERROR 0x001
93: #define VALIDATE_OK 0x002
94: #define VALIDATE_NOT_OK 0x004
95: #define FLAG_CHECK_USER 0x010
96: #define FLAG_NO_USER 0x020
97: #define FLAG_NO_HOST 0x040
98: #define FLAG_NO_CHECK 0x080
99:
100: /*
101: * Pseudo-boolean values
102: */
103: #undef TRUE
104: #define TRUE 1
105: #undef FALSE
106: #define FALSE 0
107:
108: /*
109: * find_path()/load_cmnd() return values
110: */
111: #define FOUND 0
112: #define NOT_FOUND 1
113: #define NOT_FOUND_DOT 2
114:
115: /*
116: * Various modes sudo can be in (based on arguments) in hex
117: */
118: #define MODE_RUN 0x00000001
119: #define MODE_EDIT 0x00000002
120: #define MODE_VALIDATE 0x00000004
121: #define MODE_INVALIDATE 0x00000008
122: #define MODE_KILL 0x00000010
123: #define MODE_VERSION 0x00000020
124: #define MODE_HELP 0x00000040
125: #define MODE_LIST 0x00000080
126: #define MODE_CHECK 0x00000100
127: #define MODE_LISTDEFS 0x00000200
128: #define MODE_MASK 0x0000ffff
129:
130: /* Mode flags */
131: #define MODE_BACKGROUND 0x00010000 /* XXX - unused */
132: #define MODE_SHELL 0x00020000
133: #define MODE_LOGIN_SHELL 0x00040000
134: #define MODE_IMPLIED_SHELL 0x00080000
135: #define MODE_RESET_HOME 0x00100000
136: #define MODE_PRESERVE_GROUPS 0x00200000
137: #define MODE_PRESERVE_ENV 0x00400000
138: #define MODE_NONINTERACTIVE 0x00800000
139: #define MODE_IGNORE_TICKET 0x01000000
140:
141: /*
142: * Used with set_perms()
143: */
144: #define PERM_INITIAL 0x00
145: #define PERM_ROOT 0x01
146: #define PERM_USER 0x02
147: #define PERM_FULL_USER 0x03
148: #define PERM_SUDOERS 0x04
149: #define PERM_RUNAS 0x05
150: #define PERM_TIMESTAMP 0x06
151: #define PERM_NOEXIT 0x10 /* flag */
152: #define PERM_MASK 0xf0
153:
154: /*
155: * Shortcuts for sudo_user contents.
156: */
157: #define user_name (sudo_user.name)
158: #define user_uid (sudo_user.uid)
159: #define user_gid (sudo_user.gid)
160: #define user_passwd (sudo_user.pw->pw_passwd)
161: #define user_uuid (sudo_user.uuid)
162: #define user_dir (sudo_user.pw->pw_dir)
163: #define user_group_list (sudo_user.group_list)
164: #define user_tty (sudo_user.tty)
165: #define user_ttypath (sudo_user.ttypath)
166: #define user_cwd (sudo_user.cwd)
167: #define user_cmnd (sudo_user.cmnd)
168: #define user_args (sudo_user.cmnd_args)
169: #define user_base (sudo_user.cmnd_base)
170: #define user_stat (sudo_user.cmnd_stat)
171: #define user_path (sudo_user.path)
172: #define user_prompt (sudo_user.prompt)
173: #define user_host (sudo_user.host)
174: #define user_shost (sudo_user.shost)
175: #define user_ccname (sudo_user.krb5_ccname)
176: #define safe_cmnd (sudo_user.cmnd_safe)
177: #define login_class (sudo_user.class_name)
178: #define runas_pw (sudo_user._runas_pw)
179: #define runas_gr (sudo_user._runas_gr)
180: #define user_role (sudo_user.role)
181: #define user_type (sudo_user.type)
182: #define user_closefrom (sudo_user.closefrom)
183:
184: #ifdef __TANDEM
185: # define ROOT_UID 65535
186: #else
187: # define ROOT_UID 0
188: #endif
189:
190: /*
191: * We used to use the system definition of PASS_MAX or _PASSWD_LEN,
192: * but that caused problems with various alternate authentication
193: * methods. So, we just define our own and assume that it is >= the
194: * system max.
195: */
196: #define SUDO_PASS_MAX 256
197:
198: struct lbuf;
199: struct passwd;
200: struct stat;
201: struct timeval;
202:
203: /*
204: * Function prototypes
205: */
206: #define YY_DECL int yylex(void)
207:
208: /* goodpath.c */
209: char *sudo_goodpath(const char *, struct stat *);
210:
211: /* findpath.c */
212: int find_path(char *, char **, struct stat *, char *, int);
213:
214: /* check.c */
215: int check_user(int, int);
216: void remove_timestamp(int);
217: int user_is_exempt(void);
218:
219: /* sudo_auth.c */
220: int verify_user(struct passwd *, char *);
221: int sudo_auth_begin_session(struct passwd *);
222: int sudo_auth_end_session(struct passwd *);
223: int sudo_auth_init(struct passwd *pw);
224: int sudo_auth_cleanup(struct passwd *pw);
225:
226: /* parse.c */
227: int sudo_file_open(struct sudo_nss *);
228: int sudo_file_close(struct sudo_nss *);
229: int sudo_file_setdefs(struct sudo_nss *);
230: int sudo_file_lookup(struct sudo_nss *, int, int);
231: int sudo_file_parse(struct sudo_nss *);
232: int sudo_file_display_cmnd(struct sudo_nss *, struct passwd *);
233: int sudo_file_display_defaults(struct sudo_nss *, struct passwd *, struct lbuf *);
234: int sudo_file_display_bound_defaults(struct sudo_nss *, struct passwd *, struct lbuf *);
235: int sudo_file_display_privs(struct sudo_nss *, struct passwd *, struct lbuf *);
236:
237: /* set_perms.c */
238: void rewind_perms(void);
239: int set_perms(int);
240: void restore_perms(void);
241: int pam_prep_user(struct passwd *);
242:
243: /* gram.y */
244: int yyparse(void);
245:
246: /* toke.l */
247: YY_DECL;
248:
249: /* defaults.c */
250: void dump_defaults(void);
251: void dump_auth_methods(void);
252:
253: /* getspwuid.c */
254: char *sudo_getepw(const struct passwd *);
255:
256: /* zero_bytes.c */
257: void zero_bytes(volatile void *, size_t);
258:
259: /* sudo_nss.c */
260: void display_privs(struct sudo_nss_list *, struct passwd *);
261: int display_cmnd(struct sudo_nss_list *, struct passwd *);
262:
263: /* pwutil.c */
264: void sudo_setgrent(void);
265: void sudo_endgrent(void);
266: void sudo_setpwent(void);
267: void sudo_endpwent(void);
268: void sudo_setspent(void);
269: void sudo_endspent(void);
270: struct group_list *get_group_list(struct passwd *pw);
271: void set_group_list(const char *, GETGROUPS_T *gids, int ngids);
272: struct passwd *sudo_getpwnam(const char *);
273: struct passwd *sudo_fakepwnamid(const char *user, uid_t uid, gid_t gid);
274: struct passwd *sudo_fakepwnam(const char *, gid_t);
275: struct passwd *sudo_getpwuid(uid_t);
276: struct group *sudo_getgrnam(const char *);
277: struct group *sudo_fakegrnam(const char *);
278: struct group *sudo_getgrgid(gid_t);
279: void grlist_addref(struct group_list *);
280: void grlist_delref(struct group_list *);
281: void gr_addref(struct group *);
282: void gr_delref(struct group *);
283: void pw_addref(struct passwd *);
284: void pw_delref(struct passwd *);
285: int user_in_group(struct passwd *, const char *);
286:
287: /* timestr.c */
288: char *get_timestr(time_t, int);
289:
290: /* atobool.c */
291: int atobool(const char *str);
292:
293: /* boottime.c */
294: int get_boottime(struct timeval *);
295:
296: /* iolog.c */
297: void io_nextid(char *iolog_dir, char sessid[7]);
298:
299: /* iolog_path.c */
300: char *expand_iolog_path(const char *prefix, const char *dir, const char *file,
301: char **slashp);
302:
303: /* env.c */
304: char **env_get(void);
305: void env_init(char * const envp[]);
306: void init_envtables(void);
307: void insert_env_vars(char * const envp[]);
308: void read_env_file(const char *, int);
309: void rebuild_env(void);
310: void validate_env_vars(char * const envp[]);
311:
312: /* fmt_string.c */
313: char *fmt_string(const char *, const char *);
314:
315: /* sudoers.c */
316: void plugin_cleanup(int);
317: void set_fqdn(void);
318: FILE *open_sudoers(const char *, int, int *);
319:
320: /* aix.c */
321: void aix_restoreauthdb(void);
322: void aix_setauthdb(char *user);
323:
324: /* group_plugin.c */
325: int group_plugin_load(char *plugin_info);
326: void group_plugin_unload(void);
327: int group_plugin_query(const char *user, const char *group,
328: const struct passwd *pwd);
329:
330: /* setgroups.c */
331: int sudo_setgroups(int ngids, const GETGROUPS_T *gids);
332:
333: #ifndef _SUDO_MAIN
334: extern struct sudo_user sudo_user;
335: extern struct passwd *list_pw;
336: extern const char *sudoers_file;
337: extern mode_t sudoers_mode;
338: extern uid_t sudoers_uid;
339: extern gid_t sudoers_gid;
340: extern int long_list;
341: extern int sudo_mode;
342: extern uid_t timestamp_uid;
343: extern sudo_conv_t sudo_conv;
344: extern sudo_printf_t sudo_printf;
345: #endif
346:
347: #endif /* _SUDO_SUDOERS_H */
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