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/*
* Copyright (c) 1993-1996, 1998-2005, 2007-2010
* Todd C. Miller <Todd.Miller@courtesan.com>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
* Sponsored in part by the Defense Advanced Research Projects
* Agency (DARPA) and Air Force Research Laboratory, Air Force
* Materiel Command, USAF, under agreement number F39502-99-1-0512.
*/
#ifndef _SUDO_SUDO_H
#define _SUDO_SUDO_H
#include <pathnames.h>
#include <limits.h>
#include "compat.h"
#include "alloc.h"
#include "defaults.h"
#include "error.h"
#include "list.h"
#include "logging.h"
#include "missing.h"
#include "sudo_nss.h"
#ifdef HAVE_MBR_CHECK_MEMBERSHIP
# include <membership.h>
#endif
/*
* Info pertaining to the invoking user.
*/
struct sudo_user {
struct passwd *pw;
struct passwd *_runas_pw;
struct group *_runas_gr;
struct stat *cmnd_stat;
char *path;
char *shell;
char *tty;
char *ttypath;
char *host;
char *shost;
char *prompt;
char *cmnd;
char *cmnd_args;
char *cmnd_base;
char *cmnd_safe;
char *class_name;
char *krb5_ccname;
char *display;
char *askpass;
int ngroups;
GETGROUPS_T *groups;
struct list_member *env_vars;
#ifdef HAVE_SELINUX
char *role;
char *type;
#endif
char cwd[PATH_MAX];
char sessid[7];
#ifdef HAVE_MBR_CHECK_MEMBERSHIP
uuid_t uuid;
#endif
};
/* Status passed between parent and child via socketpair */
struct command_status {
#define CMD_INVALID 0
#define CMD_ERRNO 1
#define CMD_WSTATUS 2
#define CMD_SIGNO 3
int type;
int val;
};
/*
* Return values for sudoers_lookup(), also used as arguments for log_auth()
* Note: cannot use '0' as a value here.
*/
/* XXX - VALIDATE_SUCCESS and VALIDATE_FAILURE instead? */
#define VALIDATE_ERROR 0x001
#define VALIDATE_OK 0x002
#define VALIDATE_NOT_OK 0x004
#define FLAG_CHECK_USER 0x010
#define FLAG_NO_USER 0x020
#define FLAG_NO_HOST 0x040
#define FLAG_NO_CHECK 0x080
/*
* Pseudo-boolean values
*/
#undef TRUE
#define TRUE 1
#undef FALSE
#define FALSE 0
/*
* find_path()/load_cmnd() return values
*/
#define FOUND 1
#define NOT_FOUND 0
#define NOT_FOUND_DOT -1
/*
* Various modes sudo can be in (based on arguments) in hex
*/
#define MODE_RUN 0x00000001
#define MODE_EDIT 0x00000002
#define MODE_VALIDATE 0x00000004
#define MODE_INVALIDATE 0x00000008
#define MODE_KILL 0x00000010
#define MODE_VERSION 0x00000020
#define MODE_HELP 0x00000040
#define MODE_LIST 0x00000080
#define MODE_CHECK 0x00000100
#define MODE_LISTDEFS 0x00000200
#define MODE_MASK 0x0000ffff
/* Mode flags */
#define MODE_BACKGROUND 0x00010000
#define MODE_SHELL 0x00020000
#define MODE_LOGIN_SHELL 0x00040000
#define MODE_IMPLIED_SHELL 0x00080000
#define MODE_RESET_HOME 0x00100000
#define MODE_PRESERVE_GROUPS 0x00200000
#define MODE_PRESERVE_ENV 0x00400000
#define MODE_NONINTERACTIVE 0x00800000
/*
* Used with set_perms()
*/
#define PERM_ROOT 0x00
#define PERM_USER 0x01
#define PERM_FULL_USER 0x02
#define PERM_SUDOERS 0x03
#define PERM_RUNAS 0x04
#define PERM_FULL_RUNAS 0x05
#define PERM_TIMESTAMP 0x06
#define PERM_NOEXIT 0x10 /* flag */
#define PERM_MASK 0xf0
/*
* Shortcuts for sudo_user contents.
*/
#define user_name (sudo_user.pw->pw_name)
#define user_passwd (sudo_user.pw->pw_passwd)
#define user_uid (sudo_user.pw->pw_uid)
#define user_uuid (sudo_user.uuid)
#define user_gid (sudo_user.pw->pw_gid)
#define user_dir (sudo_user.pw->pw_dir)
#define user_shell (sudo_user.shell)
#define user_ngroups (sudo_user.ngroups)
#define user_groups (sudo_user.groups)
#define user_tty (sudo_user.tty)
#define user_ttypath (sudo_user.ttypath)
#define user_cwd (sudo_user.cwd)
#define user_cmnd (sudo_user.cmnd)
#define user_args (sudo_user.cmnd_args)
#define user_base (sudo_user.cmnd_base)
#define user_stat (sudo_user.cmnd_stat)
#define user_path (sudo_user.path)
#define user_prompt (sudo_user.prompt)
#define user_host (sudo_user.host)
#define user_shost (sudo_user.shost)
#define user_ccname (sudo_user.krb5_ccname)
#define user_display (sudo_user.display)
#define user_askpass (sudo_user.askpass)
#define safe_cmnd (sudo_user.cmnd_safe)
#define login_class (sudo_user.class_name)
#define runas_pw (sudo_user._runas_pw)
#define runas_gr (sudo_user._runas_gr)
#define user_role (sudo_user.role)
#define user_type (sudo_user.type)
/*
* We used to use the system definition of PASS_MAX or _PASSWD_LEN,
* but that caused problems with various alternate authentication
* methods. So, we just define our own and assume that it is >= the
* system max.
*/
#define SUDO_PASS_MAX 256
/*
* Flags for lock_file()
*/
#define SUDO_LOCK 1 /* lock a file */
#define SUDO_TLOCK 2 /* test & lock a file (non-blocking) */
#define SUDO_UNLOCK 4 /* unlock a file */
/*
* Flags for tgetpass()
*/
#define TGP_ECHO 0x01 /* leave echo on when reading passwd */
#define TGP_STDIN 0x02 /* read from stdin, not /dev/tty */
#define TGP_ASKPASS 0x04 /* read from askpass helper program */
struct lbuf;
struct passwd;
struct stat;
struct timeval;
/* aix.c */
void aix_prep_user __P((char *, char *));
void aix_setauthdb __P((char *user));
void aix_restoreauthdb __P((void));
/* boottime.c */
int get_boottime __P((struct timeval *));
/* check.c */
int user_is_exempt __P((void));
void check_user __P((int, int));
void remove_timestamp __P((int));
/* env.c */
char **env_get __P((void));
void env_init __P((int lazy));
void init_envtables __P((void));
void insert_env_vars __P((struct list_member *));
void read_env_file __P((const char *, int));
void rebuild_env __P((int));
void validate_env_vars __P((struct list_member *));
/* exec.c */
int sudo_execve __P((const char *path, char *argv[], char *envp[], uid_t uid,
struct command_status *cstat, int dowait, int bgmode));
/* fileops.c */
char *sudo_parseln __P((FILE *));
int lock_file __P((int, int));
int touch __P((int, char *, struct timeval *));
/* find_path.c */
int find_path __P((char *, char **, struct stat *, char *, int));
/* getspwuid.c */
char *sudo_getepw __P((const struct passwd *));
/* gettime.c */
int gettime __P((struct timeval *));
/* goodpath.c */
char *sudo_goodpath __P((const char *, struct stat *));
/* gram.y */
int yyparse __P((void));
/* iolog.c */
int io_log_open __P((void));
int log_stderr __P((const char *buf, unsigned int len));
int log_stdin __P((const char *buf, unsigned int len));
int log_stdout __P((const char *buf, unsigned int len));
int log_ttyin __P((const char *buf, unsigned int len));
int log_ttyout __P((const char *buf, unsigned int len));
void io_log_close __P((void));
void io_nextid __P((void));
/* pam.c */
int pam_begin_session __P((struct passwd *));
int pam_end_session __P((void));
/* parse.c */
int sudo_file_open __P((struct sudo_nss *));
int sudo_file_close __P((struct sudo_nss *));
int sudo_file_setdefs __P((struct sudo_nss *));
int sudo_file_lookup __P((struct sudo_nss *, int, int));
int sudo_file_parse __P((struct sudo_nss *));
int sudo_file_display_cmnd __P((struct sudo_nss *, struct passwd *));
int sudo_file_display_defaults __P((struct sudo_nss *, struct passwd *, struct lbuf *));
int sudo_file_display_bound_defaults __P((struct sudo_nss *, struct passwd *, struct lbuf *));
int sudo_file_display_privs __P((struct sudo_nss *, struct passwd *, struct lbuf *));
/* parse_args.c */
int parse_args __P((int, char **));
/* get_pty.c */
int get_pty __P((int *master, int *slave, char *name, size_t namesz, uid_t uid));
/* pwutil.c */
int user_in_group __P((struct passwd *, const char *));
struct group *sudo_fakegrnam __P((const char *));
struct group *sudo_getgrgid __P((gid_t));
struct group *sudo_getgrnam __P((const char *));
struct passwd *sudo_fakepwnam __P((const char *, gid_t));
struct passwd *sudo_getpwnam __P((const char *));
struct passwd *sudo_getpwuid __P((uid_t));
void sudo_endgrent __P((void));
void sudo_endpwent __P((void));
void sudo_endspent __P((void));
void sudo_setgrent __P((void));
void sudo_setpwent __P((void));
void sudo_setspent __P((void));
/* selinux.c */
int selinux_restore_tty __P((void));
int selinux_setup __P((const char *role, const char *type, const char *ttyn,
int ttyfd));
void selinux_execve __P((const char *path, char *argv[], char *envp[]));
/* set_perms.c */
int set_perms __P((int));
/* sudo.c */
FILE *open_sudoers __P((const char *, int, int *));
int exec_setup __P((int, const char *, int));
void cleanup __P((int));
void set_fqdn __P((void));
/* sudo_auth.c */
void verify_user __P((struct passwd *, char *));
void pass_warn __P((FILE *));
void dump_auth_methods __P((void));
/* sudo_nss.c */
void display_privs __P((struct sudo_nss_list *, struct passwd *));
int display_cmnd __P((struct sudo_nss_list *, struct passwd *));
/* term.c */
int term_cbreak __P((int));
int term_copy __P((int, int));
int term_noecho __P((int));
int term_raw __P((int, int));
int term_restore __P((int, int));
/* tgetpass.c */
char *tgetpass __P((const char *, int, int));
int tty_present __P((void));
/* timestr.c */
char *get_timestr __P((time_t, int));
/* toke.l */
#define YY_DECL int yylex __P((void))
YY_DECL;
/* zero_bytes.c */
void zero_bytes __P((volatile void *, size_t));
/* Only provide extern declarations outside of sudo.c. */
#ifndef _SUDO_MAIN
extern struct sudo_user sudo_user;
extern struct passwd *auth_pw, *list_pw;
extern int tgetpass_flags;
extern int long_list;
extern int sudo_mode;
extern uid_t timestamp_uid;
/* XXX - conflicts with the one in visudo */
int run_command __P((const char *path, char *argv[], char *envp[], uid_t uid, int dowait));
#endif
#ifndef errno
extern int errno;
#endif
#endif /* _SUDO_SUDO_H */
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