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/*
* Copyright (c) 1993-1996,1998-2003 Todd C. Miller <Todd.Miller@courtesan.com>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* 4. Products derived from this software may not be called "Sudo" nor
* may "Sudo" appear in their names without specific prior written
* permission from the author.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
* THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* 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.
*
* $Sudo: sudo.h,v 1.194 2003/04/16 00:42:10 millert Exp $
*/
#ifndef _SUDO_SUDO_H
#define _SUDO_SUDO_H
#include <pathnames.h>
#include "compat.h"
#include "defaults.h"
#include "logging.h"
/*
* Info pertaining to the invoking user.
*/
struct sudo_user {
struct passwd *pw;
struct passwd *_runas_pw;
char *path;
char *shell;
char *tty;
char cwd[MAXPATHLEN];
char *host;
char *shost;
char **runas;
char *prompt;
char *cmnd_safe;
char *cmnd;
char *cmnd_args;
char *class_name;
};
/*
* 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 0x01
#define VALIDATE_OK 0x02
#define VALIDATE_NOT_OK 0x04
#define FLAG_NOPASS 0x10
#define FLAG_NO_USER 0x20
#define FLAG_NO_HOST 0x40
#define FLAG_NO_CHECK 0x80
/*
* 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 octal
*/
#define MODE_RUN 000001
#define MODE_VALIDATE 000002
#define MODE_INVALIDATE 000004
#define MODE_KILL 000010
#define MODE_VERSION 000020
#define MODE_HELP 000040
#define MODE_LIST 000100
#define MODE_LISTDEFS 000200
#define MODE_BACKGROUND 000400
#define MODE_SHELL 001000
#define MODE_IMPLIED_SHELL 002000
#define MODE_RESET_HOME 004000
#define MODE_PRESERVE_GROUPS 010000
/*
* Used with set_perms()
*/
#define PERM_ROOT 0x00
#define PERM_FULL_ROOT 0x01
#define PERM_USER 0x02
#define PERM_FULL_USER 0x03
#define PERM_SUDOERS 0x04
#define PERM_RUNAS 0x05
#define PERM_TIMESTAMP 0x06
/*
* 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_gid (sudo_user.pw->pw_gid)
#define user_dir (sudo_user.pw->pw_dir)
#define user_shell (sudo_user.shell)
#define user_tty (sudo_user.tty)
#define user_cwd (sudo_user.cwd)
#define user_runas (sudo_user.runas)
#define user_cmnd (sudo_user.cmnd)
#define user_args (sudo_user.cmnd_args)
#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 safe_cmnd (sudo_user.cmnd_safe)
#define login_class (sudo_user.class_name)
#define runas_pw (sudo_user._runas_pw)
/*
* 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 sudoers_lookup:
* PASSWD_NEVER: user never has to give a passwd
* PASSWD_ALL: no passwd needed if all entries for host have NOPASSWD flag
* PASSWD_ANY: no passwd needed if any entry for host has a NOPASSWD flag
* PASSWD_ALWAYS: passwd always needed
*/
#define PWCHECK_NEVER 0x01
#define PWCHECK_ALL 0x02
#define PWCHECK_ANY 0x04
#define PWCHECK_ALWAYS 0x08
/*
* Flags for tgetpass()
*/
#define TGP_ECHO 0x01 /* leave echo on when reading passwd */
#define TGP_STDIN 0x02 /* read from stdin, not /dev/tty */
/*
* Function prototypes
*/
#define YY_DECL int yylex __P((void))
#ifndef HAVE_GETCWD
char *getcwd __P((char *, size_t size));
#endif
#ifndef HAVE_SNPRINTF
int snprintf __P((char *, size_t, const char *, ...));
#endif
#ifndef HAVE_VSNPRINTF
int vsnprintf __P((char *, size_t, const char *, va_list));
#endif
#ifndef HAVE_ASPRINTF
int asprintf __P((char **, const char *, ...));
#endif
#ifndef HAVE_VASPRINTF
int vasprintf __P((char **, const char *, va_list));
#endif
#ifndef HAVE_STRCASECMP
int strcasecmp __P((const char *, const char *));
#endif
#ifndef HAVE_STRLCAT
size_t strlcat __P((char *, const char *, size_t));
#endif
#ifndef HAVE_STRLCPY
size_t strlcpy __P((char *, const char *, size_t));
#endif
char *sudo_goodpath __P((const char *));
char *tgetpass __P((const char *, int, int));
int find_path __P((char *, char **, char *));
void check_user __P((void));
void verify_user __P((struct passwd *, char *));
int sudoers_lookup __P((int));
void set_perms_nosuid __P((int));
void set_perms_posix __P((int));
void set_perms_suid __P((int));
void remove_timestamp __P((int));
int check_secureware __P((char *));
void sia_attempt_auth __P((void));
void pam_attempt_auth __P((void));
int yyparse __P((void));
void pass_warn __P((FILE *));
VOID *emalloc __P((size_t));
VOID *emalloc2 __P((size_t, size_t));
VOID *erealloc __P((VOID *, size_t));
VOID *erealloc3 __P((VOID *, size_t, size_t));
char *estrdup __P((const char *));
int easprintf __P((char **, const char *, ...));
int evasprintf __P((char **, const char *, va_list));
void dump_defaults __P((void));
void dump_auth_methods __P((void));
void init_envtables __P((void));
int lock_file __P((int, int));
int touch __P((char *, time_t));
int user_is_exempt __P((void));
void set_fqdn __P((void));
char *sudo_getepw __P((struct passwd *));
int pam_prep_user __P((struct passwd *));
void zero_bytes __P((volatile VOID *, size_t));
YY_DECL;
/* Only provide extern declarations outside of sudo.c. */
#ifndef _SUDO_MAIN
extern struct sudo_user sudo_user;
extern struct passwd *auth_pw;
extern FILE *sudoers_fp;
extern int tgetpass_flags;
extern uid_t timestamp_uid;
extern void (*set_perms) __P((int));
#endif
extern int errno;
#endif /* _SUDO_SUDO_H */
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