2 * Copyright (c) 1993-1996, 1998-2005, 2007-2016
3 * Todd C. Miller <Todd.Miller@sudo.ws>
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.
26 #include <pathnames.h>
30 # include "compat/stdbool.h"
31 #endif /* HAVE_STDBOOL_H */
33 #include "sudo_gettext.h" /* must be included before sudo_compat.h */
35 #include "sudo_compat.h"
36 #include "sudo_fatal.h"
37 #include "sudo_conf.h"
38 #include "sudo_debug.h"
39 #include "sudo_queue.h"
40 #include "sudo_util.h"
47 # define ROOT_UID 65535
53 * Various modes sudo can be in (based on arguments) in hex
55 #define MODE_RUN 0x00000001
56 #define MODE_EDIT 0x00000002
57 #define MODE_VALIDATE 0x00000004
58 #define MODE_INVALIDATE 0x00000008
59 #define MODE_KILL 0x00000010
60 #define MODE_VERSION 0x00000020
61 #define MODE_HELP 0x00000040
62 #define MODE_LIST 0x00000080
63 #define MODE_CHECK 0x00000100
64 #define MODE_MASK 0x0000ffff
67 /* XXX - prune this */
68 #define MODE_BACKGROUND 0x00010000
69 #define MODE_SHELL 0x00020000
70 #define MODE_LOGIN_SHELL 0x00040000
71 #define MODE_IMPLIED_SHELL 0x00080000
72 #define MODE_RESET_HOME 0x00100000
73 #define MODE_PRESERVE_GROUPS 0x00200000
74 #define MODE_PRESERVE_ENV 0x00400000
75 #define MODE_NONINTERACTIVE 0x00800000
76 #define MODE_LONG_LIST 0x01000000
79 * Flags for tgetpass()
81 #define TGP_NOECHO 0x00 /* turn echo off reading pw (default) */
82 #define TGP_ECHO 0x01 /* leave echo on when reading passwd */
83 #define TGP_STDIN 0x02 /* read from stdin, not /dev/tty */
84 #define TGP_ASKPASS 0x04 /* read from askpass helper program */
85 #define TGP_MASK 0x08 /* mask user input when reading */
86 #define TGP_NOECHO_TRY 0x10 /* turn off echo if possible */
88 /* name/value pairs for command line settings. */
89 struct sudo_settings {
104 const char *username;
115 #define CD_SET_UID 0x00001
116 #define CD_SET_EUID 0x00002
117 #define CD_SET_GID 0x00004
118 #define CD_SET_EGID 0x00008
119 #define CD_PRESERVE_GROUPS 0x00010
120 #define CD_NOEXEC 0x00020
121 #define CD_SET_PRIORITY 0x00040
122 #define CD_SET_UMASK 0x00080
123 #define CD_SET_TIMEOUT 0x00100
124 #define CD_SUDOEDIT 0x00200
125 #define CD_BACKGROUND 0x00400
126 #define CD_RBAC_ENABLED 0x00800
127 #define CD_USE_PTY 0x01000
128 #define CD_SET_UTMP 0x02000
129 #define CD_EXEC_BG 0x04000
130 #define CD_SUDOEDIT_COPY 0x08000
131 #define CD_SUDOEDIT_FOLLOW 0x10000
132 #define CD_SUDOEDIT_CHECKDIR 0x20000
133 #define CD_SET_GROUPS 0x40000
134 #define CD_LOGIN_SHELL 0x80000
136 struct preserved_fd {
137 TAILQ_ENTRY(preserved_fd) entries;
142 TAILQ_HEAD(preserved_fd_list, preserved_fd);
144 struct command_details {
156 struct preserved_fd_list preserved_fds;
161 const char *login_class;
163 const char *selinux_role;
164 const char *selinux_type;
165 const char *utmp_user;
170 priv_set_t *limitprivs;
174 /* Status passed between parent and child via socketpair */
175 struct command_status {
176 #define CMD_INVALID 0
178 #define CMD_WSTATUS 2
181 #define CMD_TTYWINCH 5
186 /* Garbage collector data types. */
193 /* For fatal() and fatalx() (XXX - needed?) */
197 char *tgetpass(const char *prompt, int timeout, int flags,
198 struct sudo_conv_callback *callback);
201 int sudo_execute(struct command_details *details, struct command_status *cstat);
204 int parse_args(int argc, char **argv, int *nargc, char ***nargv,
205 struct sudo_settings **settingsp, char ***env_addp);
206 extern int tgetpass_flags;
209 bool get_pty(int *master, int *slave, char *name, size_t namesz, uid_t uid);
212 int policy_init_session(struct command_details *details);
213 int run_command(struct command_details *details);
214 int os_init_common(int argc, char *argv[], char *envp[]);
215 bool gc_add(enum sudo_gc_types type, void *v);
216 void disable_coredump(bool restore);
217 bool set_user_groups(struct command_details *details);
218 extern const char *list_user;
219 extern struct user_details user_details;
220 extern int sudo_debug_instance;
223 int sudo_edit(struct command_details *details);
229 int os_init_openbsd(int argc, char *argv[], char *envp[]);
232 int selinux_restore_tty(void);
233 int selinux_setup(const char *role, const char *type, const char *ttyn,
235 void selinux_execve(int fd, const char *path, char *const argv[],
236 char *envp[], bool noexec);
239 void set_project(struct passwd *);
240 int os_init_solaris(int argc, char *argv[], char *envp[]);
243 /* XXX - move to sudo_plugin_int.h? */
245 int register_hook(struct sudo_hook *hook);
246 int deregister_hook(struct sudo_hook *hook);
247 int process_hooks_getenv(const char *name, char **val);
248 int process_hooks_setenv(const char *name, const char *value, int overwrite);
249 int process_hooks_putenv(char *string);
250 int process_hooks_unsetenv(const char *name);
253 char *getenv_unhooked(const char *name);
256 int get_net_ifs(char **addrinfo);
259 char *get_process_ttyname(char *name, size_t namelen);
263 int sudo_sigaction(int signo, struct sigaction *sa, struct sigaction *osa);
264 void init_signals(void);
265 void restore_signals(void);
266 void save_signals(void);
267 bool signal_pending(int signo);
270 void preload_static_symbols(void);
273 int add_preserved_fd(struct preserved_fd_list *pfds, int fd);
274 void closefrom_except(int startfd, struct preserved_fd_list *pfds);
275 void parse_preserved_fds(struct preserved_fd_list *pfds, const char *fdstr);
278 int tcsetpgrp_nobg(int fd, pid_t pgrp_id);
280 #endif /* SUDO_SUDO_H */