307 lines
8.8 KiB
C
307 lines
8.8 KiB
C
/*
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* CU sudo version 1.3 (based on Root Group sudo version 1.1)
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*
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* This software comes with no waranty whatsoever, use at your own risk.
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*
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* Please send bugs, changes, problems to sudo-bugs.cs.colorado.edu
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*
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*/
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/*
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* sudo version 1.1 allows users to execute commands as root
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* Copyright (C) 1991 The Root Group, Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 1, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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/* The following macros can be defined when compiling
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FQDN - if you have fully qualified hostnames
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in your SUDOERS files
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SYSLOG - if you want to use syslog instead
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of a log file
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( This is a nice feature. You can
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collect all your sudo logs at a
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single host)
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NO_ROOT_SUDO - sudo will exit if called by root
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SOLARIS - define if using Solaris 2.x
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SEND_MAIL_WHEN_NOT_OK - if you want a message sent to ALERTMAIL
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when the user is in the SUDOERS but
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does not have permission to execute
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the command entered
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( This can be used at paranoid sites )
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SEND_MAIL_WHEN_NO_USER - if you want a message sent to ALERTMAIL
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when the user is not in the SUDOERS file
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( This is generally the case )
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TIMEDIR the directory where the timestamp
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files are kept.
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TIMEOUT the number of minutes that can elapse
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before sudo will ask for a passwd again
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TRIES_FOR_PASSWORD the number of times sudo will let you
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guess are you password before screaming
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INCORRECT_PASSWORD the message that is displayed if you
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incorrectly enter your password
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MAILSUBJECT the subject of the mail sent to ALERTMAIL
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ALERTMAIL the recipient of mail from sudo
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SUDOERS the location of the sudoers file
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TMPSUDOERS the location of the lock file for visudo
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EDITOR the location of the editor
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ENV_EDITOR if this variable is defined then the
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EDITOR and VISUAL envariables are consulted
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LOGFILE log file location IF NOT USING SYSLOG
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SYSLOG if this variable is defined, sudo will log
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using the 4.3 BSD style syslog facility
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BROKEN_GETPASS if using a os with a broken getpass()
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hpux,aix,irix need this, sudo.h has details
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NEED_STRDUP if your os lacks strdup(3)
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USE_CWD if you have getcwd() and not getwd()
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(defined by default for hpux)
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HAS_SAVED_UID if you have saved uid
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(defined by default for hpux)
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USE_TERMIO if you have sysV terminal control
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(defined by default for hpux and irix)
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SHORT_MESSAGE if you don't want the full copyright message
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with the "we expect you have..." banner
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USE_INSULTS if you want to be insulted for typing an
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incorrect password like the original sudo(8)
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STD_HEADERS if you have ansi-compliant header files
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*/
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#ifndef TIMEDIR
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#define TIMEDIR "/tmp/.odus"
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#endif
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#ifndef TIMEOUT
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#define TIMEOUT 5
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#endif
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#ifndef TRIES_FOR_PASSWORD
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#define TRIES_FOR_PASSWORD 3
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#endif
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#ifndef INCORRECT_PASSWORD
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#define INCORRECT_PASSWORD "Sorry, try again."
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#endif
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/*
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* If the MAILER macro is changed make sure it will work in
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* logging.c -- there is some sendmail mail specific stuff in
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* the send_mail() routine ( e.g. the argv for the execv() )
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* MAILER should ALWAYS be fully quallified.
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*/
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#ifndef MAILER
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#define MAILER "/usr/lib/sendmail"
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#endif
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#ifndef MAILSUBJECT
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#define MAILSUBJECT "*** SECURITY information ***"
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#endif
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#ifndef ALERTMAIL
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#define ALERTMAIL "root"
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#endif
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#ifndef SUDOERS
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#define SUDOERS "/etc/sudoers"
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#endif
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#ifndef TMPSUDOERS
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#define TMPSUDOERS "/etc/stmp"
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#endif
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#ifndef EDITOR
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#if defined(hpux) || defined(__alpha) || defined(_AIX) || defined(__ksr__) || \
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defined(sgi)
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#define EDITOR "/usr/bin/vi"
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#else
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#define EDITOR "/usr/ucb/vi"
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#endif
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#endif
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#ifndef MAXHOSTNAMELEN
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#define MAXHOSTNAMELEN 64
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#endif
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#define MAXCOMMANDLENGTH MAXPATHLEN
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typedef union {
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int int_val;
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char char_val[MAXCOMMANDLENGTH];
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} YYSTYPE;
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typedef struct list {
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int type;
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char op;
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char *data;
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struct list *next;
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} LIST, *LINK;
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#ifndef hpux
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YYSTYPE yylval, yyval;
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#else
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YYSTYPE yylval;
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#endif
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/*
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* SYSLOG should be defined in the makefile
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*/
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#ifdef SYSLOG
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#include <syslog.h>
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#ifndef Syslog_ident
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#define Syslog_ident "sudo"
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#endif
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#ifndef Syslog_options
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#define Syslog_options LOG_PID
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#endif
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#ifndef Syslog_facility
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#define Syslog_facility LOG_LOCAL2
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#endif
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#ifndef Syslog_priority_OK
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#define Syslog_priority_OK LOG_NOTICE
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#endif
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#ifndef Syslog_priority_NO
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#define Syslog_priority_NO LOG_ALERT
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#endif
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#else
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#ifndef LOGFILE
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#if defined(ultrix) || defined(sun)
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#define LOGFILE "/var/adm/sudo.log"
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#else
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#define LOGFILE "/usr/adm/sudo.log"
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#endif /* /var vs. /usr */
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#endif /* LOGFILE */
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#endif /* SYSLOG */
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/*
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* Maximum number of characters to log per entry.
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* The syslogger will log this much, after that,
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* it truncates the log line. We need this here
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* to make sure that we get ellipses when the log
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* line is longer than 990 characters.
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*/
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#ifndef MAXLOGLEN
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#define MAXLOGLEN 990
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#endif
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#define VALIDATE_OK 0x00
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#define VALIDATE_NO_USER 0x01
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#define VALIDATE_NOT_OK 0x02
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#define VALIDATE_ERROR -1
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/*
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* the arguments passed to log_error() are ANDed with GLOBAL_PROBLEM
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* If the result is TRUE, the argv is NOT logged with the error message
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*/
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#define GLOBAL_PROBLEM 0x20
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#define GLOBAL_NO_PW_ENT ( 0x01 | GLOBAL_PROBLEM )
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#define GLOBAL_NO_HOSTNAME ( 0x02 | GLOBAL_PROBLEM )
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#define GLOBAL_HOST_UNREGISTERED ( 0x03 | GLOBAL_PROBLEM )
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#define PASSWORD_NOT_CORRECT 0x04
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#define ALL_SYSTEMS_GO 0x00
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#define NO_SUDOERS_FILE ( 0x05 | GLOBAL_PROBLEM )
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#undef TRUE
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#define TRUE 0x01
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#undef FALSE
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#define FALSE 0x00
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#define TYPE1 0x11
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#define TYPE2 0x12
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#define TYPE3 0x13
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#define FOUND_USER 0x14
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#define NOT_FOUND_USER 0x15
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#define MATCH 0x16
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#define NO_MATCH 0x17
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#define QUIT_NOW 0x18
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#define PARSE_ERROR 0x19
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#define USER_LIST 0x00
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#define HOST_LIST 0x01
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#define CMND_LIST 0x02
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#define EXTRA_LIST 0x03
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/* These are the functions that are called in sudo */
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#ifdef NEED_STRDUP
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char *strdup();
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#endif
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char *find_path();
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void load_globals();
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void log_error();
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void inform_user();
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void check_user();
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void clean_envp();
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int validate();
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void be_root();
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void be_user();
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void be_full_user();
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/* Most of these variables are declared in main() so they don't need
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* to be extern'ed here if this is main...
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*/
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#ifndef MAIN
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extern uid_t uid;
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extern char *host;
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extern char *user;
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extern char *cmnd;
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extern int Argc;
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extern char **Argv;
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extern char **Envp;
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#endif
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extern int errno;
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/*
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* This is to placate hpux
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*/
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#ifdef hpux
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# define getdtablesize() (sysconf(_SC_OPEN_MAX))
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# define setreuid(__RUID, __EUID) (setresuid(__RUID, __EUID, (uid_t)-1))
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#endif /* hpux */
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/*
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* Sun's cpp doesn't define this but it should
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*/
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#if defined(SOLARIS) && !defined(__svr4__)
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# define __svr4__
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#endif /* SOLARIS */
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