Source Code 1994 March/Source_Code_CD-ROM_Walnut_Creek_March_1994.iso/compsrcs/misc/volume33/mailagnt/part08

Text File | 1992-11-19 | 54.5 KB | 1,409 lines

Newsgroups: comp.sources.misc
From: [e-mail] (Raphael Manfredi)
Subject:  v33i100:  mailagent - Rule Based Mail Filtering, Part08/17
Message-ID: <[e-mail]>
X-Md4-Signature: df29022f0cc212b372fd291c70a57438
Date: Fri, 20 Nov 1992 05:06:10 GMT
Approved: [e-mail]

Submitted-by: [e-mail] (Raphael Manfredi)
Posting-number: Volume 33, Issue 100
Archive-name: mailagent/part08
Environment: Perl, Sendmail, UNIX

#! /bin/sh
# This is a shell archive.  Remove anything before this line, then feed it
# into a shell via "sh file" or similar.  To overwrite existing files,
# type "sh file -c".
# Contents:  Copying agent/magent.SH agent/pl/analyze.pl
#   agent/test/filter/list.t
# Wrapped by kent@sparky on Wed Nov 18 22:42:24 1992
PATH=/bin:/usr/bin:/usr/ucb:/usr/local/bin:/usr/lbin ; export PATH
echo If this archive is complete, you will see the following message:
echo '          "shar: End of archive 8 (of 17)."'
if test -f 'Copying' -a "${1}" != "-c" ; then
  echo shar: Will not clobber existing file \"'Copying'\"
else
  echo shar: Extracting \"'Copying'\" \(18090 characters\)
  sed "s/^X//" >'Copying' <<'END_OF_FILE'
X
X                    GNU GENERAL PUBLIC LICENSE
X                       Version 2, June 1991
X
X Copyright (C) 1989, 1991 Free Software Foundation, Inc.
X                          675 Mass Ave, Cambridge, MA 02139, USA
X
X Everyone is permitted to copy and distribute verbatim copies
X of this license document, but changing it is not allowed.
X
X                            Preamble
X
X  The licenses for most software are designed to take away your
Xfreedom to share and change it.  By contrast, the GNU General Public
XLicense is intended to guarantee your freedom to share and change free
Xsoftware--to make sure the software is free for all its users.  This
XGeneral Public License applies to most of the Free Software
XFoundation's software and to any other program whose authors commit to
Xusing it.  (Some other Free Software Foundation software is covered by
Xthe GNU Library General Public License instead.)  You can apply it to
Xyour programs, too.
X
X  When we speak of free software, we are referring to freedom, not
Xprice.  Our General Public Licenses are designed to make sure that you
Xhave the freedom to distribute copies of free software (and charge for
Xthis service if you wish), that you receive source code or can get it
Xif you want it, that you can change the software or use pieces of it
Xin new free programs; and that you know you can do these things.
X
X  To protect your rights, we need to make restrictions that forbid
Xanyone to deny you these rights or to ask you to surrender the rights.
XThese restrictions translate to certain responsibilities for you if you
Xdistribute copies of the software, or if you modify it.
X
X  For example, if you distribute copies of such a program, whether
Xgratis or for a fee, you must give the recipients all the rights that
Xyou have.  You must make sure that they, too, receive or can get the
Xsource code.  And you must show them these terms so they know their
Xrights.
X
X  We protect your rights with two steps: (1) copyright the software, and
X(2) offer you this license which gives you legal permission to copy,
Xdistribute and/or modify the software.
X
X  Also, for each author's protection and ours, we want to make certain
Xthat everyone understands that there is no warranty for this free
Xsoftware.  If the software is modified by someone else and passed on, we
Xwant its recipients to know that what they have is not the original, so
Xthat any problems introduced by others will not reflect on the original
Xauthors' reputations.
X
X  Finally, any free program is threatened constantly by software
Xpatents.  We wish to avoid the danger that redistributors of a free
Xprogram will individually obtain patent licenses, in effect making the
Xprogram proprietary.  To prevent this, we have made it clear that any
Xpatent must be licensed for everyone's free use or not licensed at all.
X
X  The precise terms and conditions for copying, distribution and
Xmodification follow.
X
X                    GNU GENERAL PUBLIC LICENSE
X   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
X
X  0. This License applies to any program or other work which contains
Xa notice placed by the copyright holder saying it may be distributed
Xunder the terms of this General Public License.  The "Program", below,
Xrefers to any such program or work, and a "work based on the Program"
Xmeans either the Program or any derivative work under copyright law:
Xthat is to say, a work containing the Program or a portion of it,
Xeither verbatim or with modifications and/or translated into another
Xlanguage.  (Hereinafter, translation is included without limitation in
Xthe term "modification".)  Each licensee is addressed as "you".
X
XActivities other than copying, distribution and modification are not
Xcovered by this License; they are outside its scope.  The act of
Xrunning the Program is not restricted, and the output from the Program
Xis covered only if its contents constitute a work based on the
XProgram (independent of having been made by running the Program).
XWhether that is true depends on what the Program does.
X
X  1. You may copy and distribute verbatim copies of the Program's
Xsource code as you receive it, in any medium, provided that you
Xconspicuously and appropriately publish on each copy an appropriate
Xcopyright notice and disclaimer of warranty; keep intact all the
Xnotices that refer to this License and to the absence of any warranty;
Xand give any other recipients of the Program a copy of this License
Xalong with the Program.
X
XYou may charge a fee for the physical act of transferring a copy, and
Xyou may at your option offer warranty protection in exchange for a fee.
X
X  2. You may modify your copy or copies of the Program or any portion
Xof it, thus forming a work based on the Program, and copy and
Xdistribute such modifications or work under the terms of Section 1
Xabove, provided that you also meet all of these conditions:
X
X    a) You must cause the modified files to carry prominent notices
X    stating that you changed the files and the date of any change.
X
X    b) You must cause any work that you distribute or publish, that in
X    whole or in part contains or is derived from the Program or any
X    part thereof, to be licensed as a whole at no charge to all third
X    parties under the terms of this License.
X
X    c) If the modified program normally reads commands interactively
X    when run, you must cause it, when started running for such
X    interactive use in the most ordinary way, to print or display an
X    announcement including an appropriate copyright notice and a
X    notice that there is no warranty (or else, saying that you provide
X    a warranty) and that users may redistribute the program under
X    these conditions, and telling the user how to view a copy of this
X    License.  (Exception: if the Program itself is interactive but
X    does not normally print such an announcement, your work based on
X    the Program is not required to print an announcement.)
X
XThese requirements apply to the modified work as a whole.  If
Xidentifiable sections of that work are not derived from the Program,
Xand can be reasonably considered independent and separate works in
Xthemselves, then this License, and its terms, do not apply to those
Xsections when you distribute them as separate works.  But when you
Xdistribute the same sections as part of a whole which is a work based
Xon the Program, the distribution of the whole must be on the terms of
Xthis License, whose permissions for other licensees extend to the
Xentire whole, and thus to each and every part regardless of who wrote it.
X
XThus, it is not the intent of this section to claim rights or contest
Xyour rights to work written entirely by you; rather, the intent is to
Xexercise the right to control the distribution of derivative or
Xcollective works based on the Program.
X
XIn addition, mere aggregation of another work not based on the Program
Xwith the Program (or with a work based on the Program) on a volume of
Xa storage or distribution medium does not bring the other work under
Xthe scope of this License.
X
X  3. You may copy and distribute the Program (or a work based on it,
Xunder Section 2) in object code or executable form under the terms of
XSections 1 and 2 above provided that you also do one of the following:
X
X    a) Accompany it with the complete corresponding machine-readable
X    source code, which must be distributed under the terms of Sections
X    1 and 2 above on a medium customarily used for software interchange; or,
X
X    b) Accompany it with a written offer, valid for at least three
X    years, to give any third party, for a charge no more than your
X    cost of physically performing source distribution, a complete
X    machine-readable copy of the corresponding source code, to be
X    distributed under the terms of Sections 1 and 2 above on a medium
X    customarily used for software interchange; or,
X
X    c) Accompany it with the information you received as to the offer
X    to distribute corresponding source code.  (This alternative is
X    allowed only for noncommercial distribution and only if you
X    received the program in object code or executable form with such
X    an offer, in accord with Subsection b above.)
X
XThe source code for a work means the preferred form of the work for
Xmaking modifications to it.  For an executable work, complete source
Xcode means all the source code for all modules it contains, plus any
Xassociated interface definition files, plus the scripts used to
Xcontrol compilation and installation of the executable.  However, as a
Xspecial exception, the source code distributed need not include
Xanything that is normally distributed (in either source or binary
Xform) with the major components (compiler, kernel, and so on) of the
Xoperating system on which the executable runs, unless that component
Xitself accompanies the executable.
X
XIf distribution of executable or object code is made by offering
Xaccess to copy from a designated place, then offering equivalent
Xaccess to copy the source code from the same place counts as
Xdistribution of the source code, even though third parties are not
Xcompelled to copy the source along with the object code.
X
X  4. You may not copy, modify, sublicense, or distribute the Program
Xexcept as expressly provided under this License.  Any attempt
Xotherwise to copy, modify, sublicense or distribute the Program is
Xvoid, and will automatically terminate your rights under this License.
XHowever, parties who have received copies, or rights, from you under
Xthis License will not have their licenses terminated so long as such
Xparties remain in full compliance.
X
X  5. You are not required to accept this License, since you have not
Xsigned it.  However, nothing else grants you permission to modify or
Xdistribute the Program or its derivative works.  These actions are
Xprohibited by law if you do not accept this License.  Therefore, by
Xmodifying or distributing the Program (or any work based on the
XProgram), you indicate your acceptance of this License to do so, and
Xall its terms and conditions for copying, distributing or modifying
Xthe Program or works based on it.
X
X  6. Each time you redistribute the Program (or any work based on the
XProgram), the recipient automatically receives a license from the
Xoriginal licensor to copy, distribute or modify the Program subject to
Xthese terms and conditions.  You may not impose any further
Xrestrictions on the recipients' exercise of the rights granted herein.
XYou are not responsible for enforcing compliance by third parties to
Xthis License.
X
X  7. If, as a consequence of a court judgment or allegation of patent
Xinfringement or for any other reason (not limited to patent issues),
Xconditions are imposed on you (whether by court order, agreement or
Xotherwise) that contradict the conditions of this License, they do not
Xexcuse you from the conditions of this License.  If you cannot
Xdistribute so as to satisfy simultaneously your obligations under this
XLicense and any other pertinent obligations, then as a consequence you
Xmay not distribute the Program at all.  For example, if a patent
Xlicense would not permit royalty-free redistribution of the Program by
Xall those who receive copies directly or indirectly through you, then
Xthe only way you could satisfy both it and this License would be to
Xrefrain entirely from distribution of the Program.
X
XIf any portion of this section is held invalid or unenforceable under
Xany particular circumstance, the balance of the section is intended to
Xapply and the section as a whole is intended to apply in other
Xcircumstances.
X
XIt is not the purpose of this section to induce you to infringe any
Xpatents or other property right claims or to contest validity of any
Xsuch claims; this section has the sole purpose of protecting the
Xintegrity of the free software distribution system, which is
Ximplemented by public license practices.  Many people have made
Xgenerous contributions to the wide range of software distributed
Xthrough that system in reliance on consistent application of that
Xsystem; it is up to the author/donor to decide if he or she is willing
Xto distribute software through any other system and a licensee cannot
Ximpose that choice.
X
XThis section is intended to make thoroughly clear what is believed to
Xbe a consequence of the rest of this License.
X
X  8. If the distribution and/or use of the Program is restricted in
Xcertain countries either by patents or by copyrighted interfaces, the
Xoriginal copyright holder who places the Program under this License
Xmay add an explicit geographical distribution limitation excluding
Xthose countries, so that distribution is permitted only in or among
Xcountries not thus excluded.  In such case, this License incorporates
Xthe limitation as if written in the body of this License.
X
X  9. The Free Software Foundation may publish revised and/or new versions
Xof the General Public License from time to time.  Such new versions will
Xbe similar in spirit to the present version, but may differ in detail to
Xaddress new problems or concerns.
X
XEach version is given a distinguishing version number.  If the Program
Xspecifies a version number of this License which applies to it and "any
Xlater version", you have the option of following the terms and conditions
Xeither of that version or of any later version published by the Free
XSoftware Foundation.  If the Program does not specify a version number of
Xthis License, you may choose any version ever published by the Free Software
XFoundation.
X
X  10. If you wish to incorporate parts of the Program into other free
Xprograms whose distribution conditions are different, write to the author
Xto ask for permission.  For software which is copyrighted by the Free
XSoftware Foundation, write to the Free Software Foundation; we sometimes
Xmake exceptions for this.  Our decision will be guided by the two goals
Xof preserving the free status of all derivatives of our free software and
Xof promoting the sharing and reuse of software generally.
X
X                            NO WARRANTY
X
X  11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
XFOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
XOTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
XPROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
XOR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
XMERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  THE ENTIRE RISK AS
XTO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.  SHOULD THE
XPROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
XREPAIR OR CORRECTION.
X
X  12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
XWILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
XREDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
XINCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
XOUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
XTO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
XYOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
XPROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
XPOSSIBILITY OF SUCH DAMAGES.
X
X                     END OF TERMS AND CONDITIONS
X
X        Appendix: How to Apply These Terms to Your New Programs
X
X  If you develop a new program, and you want it to be of the greatest
Xpossible use to the public, the best way to achieve this is to make it
Xfree software which everyone can redistribute and change under these terms.
X
X  To do so, attach the following notices to the program.  It is safest
Xto attach them to the start of each source file to most effectively
Xconvey the exclusion of warranty; and each file should have at least
Xthe "copyright" line and a pointer to where the full notice is found.
X
X    <one line to give the program's name and a brief idea of what it does.>
X    Copyright (C) 19yy  <name of author>
X
X    This program is free software; you can redistribute it and/or modify
X    it under the terms of the GNU General Public License as published by
X    the Free Software Foundation; either version 2 of the License, or
X    (at your option) any later version.
X
X    This program is distributed in the hope that it will be useful,
X    but WITHOUT ANY WARRANTY; without even the implied warranty of
X    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
X    GNU General Public License for more details.
X
X    You should have received a copy of the GNU General Public License
X    along with this program; if not, write to the Free Software
X    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
X
XAlso add information on how to contact you by electronic and paper mail.
X
XIf the program is interactive, make it output a short notice like this
Xwhen it starts in an interactive mode:
X
X    Gnomovision version 69, Copyright (C) 19yy name of author
X    Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
X    This is free software, and you are welcome to redistribute it
X    under certain conditions; type `show c' for details.
X
XThe hypothetical commands `show w' and `show c' should show the appropriate
Xparts of the General Public License.  Of course, the commands you use may
Xbe called something other than `show w' and `show c'; they could even be
Xmouse-clicks or menu items--whatever suits your program.
X
XYou should also get your employer (if you work as a programmer) or your
Xschool, if any, to sign a "copyright disclaimer" for the program, if
Xnecessary.  Here is a sample; alter the names:
X
X  Yoyodyne, Inc., hereby disclaims all copyright interest in the program
X  `Gnomovision' (which makes passes at compilers) written by James Hacker.
X
X  <signature of Ty Coon>, 1 April 1989
X  Ty Coon, President of Vice
X
XThis General Public License does not permit incorporating your program into
Xproprietary programs.  If your program is a subroutine library, you may
Xconsider it more useful to permit linking proprietary applications with the
Xlibrary.  If this is what you want to do, use the GNU Library General
XPublic License instead of this License.
X
END_OF_FILE
  if test 18090 -ne `wc -c <'Copying'`; then
    echo shar: \"'Copying'\" unpacked with wrong size!
  fi
  # end of 'Copying'
fi
if test -f 'agent/magent.SH' -a "${1}" != "-c" ; then
  echo shar: Will not clobber existing file \"'agent/magent.SH'\"
else
  echo shar: Extracting \"'agent/magent.SH'\" \(18483 characters\)
  sed "s/^X//" >'agent/magent.SH' <<'END_OF_FILE'
Xcase $CONFIG in
X'')
X    if test ! -f config.sh; then
X        ln ../config.sh . || \
X        ln ../../config.sh . || \
X        ln ../../../config.sh . || \
X        (echo "Can't find config.sh."; exit 1)
X    fi 2>/dev/null
X    . config.sh
X    ;;
Xesac
Xcase "$0" in
X*/*) cd `expr X$0 : 'X\(.*\)/'` ;;
Xesac
Xecho "Extracting agent/magent (with variable substitutions)"
X$spitshell >magent <<!GROK!THIS!
X# feed this into perl
X    eval 'exec perl -S \$0 "\$@"'
X        if \$running_under_some_shell;
X
X# You'll need to set up a .forward file that feeds your mail to this script,
X# via the filter. Mine looks like this:
X#   "|exec /users/ram/mail/filter >>/users/ram/.bak 2>&1"
X
X# $Id: magent.SH,v 2.9.1.2 92/08/26 12:41:27 ram Exp $
X#
X#  Copyright (c) 1991, 1992, Raphael Manfredi
X#
X#  You may redistribute only under the terms of the GNU General Public
X#  Licence as specified in the README file that comes with dist.
X#
X# $Log:    magent.SH,v $
X# Revision 2.9.1.2  92/08/26  12:41:27  ram
X# patch8: better no-lock handling
X# patch8: now maintains the notion of private library directory
X# patch8: job number computation code moved to library
X# patch8: added persisted variable handling
X# patch8: added mailhook and interface functions with filtering actions
X#
X# Revision 2.9.1.1  92/08/02  15:53:40  ram
X# patch2: added undocumented -TEST flag to skip queue processing
X# patch2: eval_error now returns 1 if error was detected
X#
X# Revision 2.9  92/07/14  16:48:48  ram
X# 3.0 beta baseline.
X#
X
X# Perload ON
X
X# The following were determined by Configure
X\$phostname = '$phostname';            # Command used to compute hostname
X\$mydomain = '$mydomain';            # Our domain name
X\$hiddennet = '$hiddennet';            # Hidden network (advertised host)
X\$maildir = '$maildir';                # Directory where mail is spooled
X\$mailfile = '$mailfile';            # File in which mail is stored
X\$mversion = '$VERSION';            # Current version number
X\$patchlevel = '$PATCHLEVEL';        # And patchlevel from patchlevel.h
X\$lock_by_flock = '$lock_by_flock';    # Want to lock mailboxes with flock ?
X\$flock_only = '$flock_only';        # Only use flock() and no .lock file
X\$orgname = '$orgname';                # Our organization name
X\$privlib = '$privlib';                # Private mailagent library
X\$inews = '$inews';
X!GROK!THIS!
X
X$spitshell >>magent <<'!NO!SUBS!'
X
X$prog_name = $0;                # Who I am
X$prog_name =~ s|^.*/(.*)|$1|;    # Keep only base name
X$has_option = 0;                # True if invoked with options
X$nolock = 0;                    # Do we need to get a lock file?
X$config_file = '~/.mailagent';    # Default configuration file
X$log_level = -1;                # Changed by -L option
X
X# Calling the mailagent as 'mailqueue' lists the queue
Xif ($prog_name eq 'mailqueue') {
X    ++$list_queue;
X    ++$has_option;
X}
X
X# Parse options
Xwhile ($ARGV[0] =~ /^-/) {
X    $_ = shift;
X    last if /--/;
X    if ($_ eq '-c') {        # Specify alternate configuration file
X        ++$nolock;            # Immediate processing wanted
X        $config_file = shift;
X    }
X    elsif ($_ eq '-d') {    # Dump rules
X        ++$has_option;        # Incompatible with other special options
X        ++$dump_rule;
X    }
X    elsif ($_ eq '-e') {    # Rule supplied on command line
X        local($*) = 1;
X        $_ = shift;
X        s/\n/ /g;
X        push(@Linerules, $_);
X        ++$edited_rules;    # Signals rules came from command line
X        ++$nolock;            # Immediate processing wanted
X    }
X    elsif ($_ eq '-f') {    # Take messages from UNIX mailbox
X        ++$nolock;            # Immediate processing wanted
X        ++$mbox_mail;
X        $mbox_file = shift;    # -f followed by file name
X    }
X    elsif ($_ eq '-h') {    # Usage help
X        &usage;
X    }
X    elsif ($_ eq '-i') {    # Interactive mode: log messages also on stderr
X        *add_log = *stderr_log;
X    }
X    elsif ($_ eq '-l') {    # List queue
X        ++$has_option;        # Incompatible with other special options
X        ++$list_queue;
X        ++$norule;            # No need to compile rules
X    }
X    elsif ($_ eq '-o') {    # Overwrite configuration variable
X        ++$nolock;            # Immediate processing wanted
X        $over_config .= "\n" . shift;
X    }
X    elsif ($_ eq '-q') {    # Process the queue
X        ++$has_option;        # Incompatible with other special options
X        ++$run_queue;
X    }
X    elsif ($_ eq '-r') {    # Specify alternate rule file
X        ++$nolock;            # Immediate processing wanted
X        $rule_file = shift;
X    }
X    elsif (/^-s(\S*)/) {    # Print statistics
X        ++$has_option;        # Incompatible with other special options
X        ++$stats;
X        ++$norule;            # No need to compile rules
X        $stats_opt = $1;
X    }
X    elsif ($_ eq '-t') {    # Track rule matches on stdout
X        ++$track_all;
X    }
X    elsif ($_ eq '-L') {    # Specify new logging level
X        $log_level = int(shift);
X    }
X    elsif ($_ eq '-V') {    # Version number
X        print STDERR "$prog_name $mversion PL$patchlevel\n";
X        exit 0;
X    }
X    elsif ($_ eq '-TEST') {    # Mailagent run via TEST (undocumented feature)
X        ++$test_mode;
X    }
X    else {
X        print STDERR "$prog_name: unknown option: $_\n";
X        &usage;
X    }
X}
X
X++$nolock if $has_option;        # No need to take a lock with special options
X
X# Only one option at a time (among those options which change our goal)
Xif ($has_option > 1) {
X    print STDERR "$prog_name: at most one special option may be specified.\n";
X    exit 1;
X}
X
X$file_name = shift;                # File name to be processed (null if stdin)
X$ENV{'IFS'}='' if $ENV{'IFS'};    # Shell separation field
X&get_configuration;                # Get a suitable configuration package (cf)
Xselect(STDOUT);                    # Because the -t option writes on STDOUT,
X$| = 1;                            # make sure it is flushed before we fork()
X$agent_wait = "agent.wait";        # Waiting file for out-of-the-queue mails
X$privlib = "$cf'home/../.." if $test_mode;    # Tests ran from test/out
X
Xif ($orgname =~ m|^/|) {        # Name of organization kept in file
X    unless (open(ORG, $orgname)) {
X        &add_log("ERROR cannot read $orgname") if $loglvl;
X    } else {
X        chop($orgname = <ORG>);
X        close ORG;
X    }
X}
X
X$ENV{'HOME'} = $cf'home;
X$ENV{'USER'} = $cf'user;
X$ENV{'NAME'} = $cf'name;
X$baselock = "$cf'spool/perl";    # This file does not exist
X$lockext = ".lock";                # Extension used by lock routines
X$lockfile = $baselock . $lockext;
X
Xumask(077);                        # Files we create are private ones
X$jobnum = &jobnum;                # Compute a job number
X
X# Allow only ONE mailagent at a time (resource consumming)
Xdo checklock($baselock);        # Make sure old locks do not remain
Xunless (-f $lockfile) {
X    # Try to get the lock file (acting as a token). We do not need locking if
X    # we have been invoked with an option and that option is not -q.
X    if ($nolock && !$run_queue) {
X        &add_log("no need to get a lock") if $loglvl > 19;
X    } elsif (0 == &acs_rqst($baselock)) {
X        &add_log("got the right to process mail") if $loglvl > 19;
X        ++$locked;
X    } else {
X        &add_log("denied right to process mail") if $loglvl > 19;
X    }
X}
X
Xif (!$locked && !$nolock) {
X    # Another mailagent is running somewhere
X    &queue_mail($file_name);
X    exit 0;
X}
X
X# Initialize mail filtering and compile filter rule if necessary
X&init_all;
X&compile_rules unless $norule;
X
X# If rules are to be dumped, this is the only action
Xif ($dump_rule) {
X    &dump_rules(*print_rule_number, *void_func);
X    unlink $lockfile if $locked;
X    exit 0;
X}
X
X# Likewise, statistics dumping is the only option
Xif ($stats) {
X    &report_stats($stats_opt);
X    unlink $lockfile if $locked;
X    exit 0;
X}
X
X# Listing the queue is also the only performed action
Xif ($list_queue) {
X    &list_queue;
X    unlink $lockfile if $locked;
X    exit 0;
X}
X
X# Taking messages from mailbox file
Xif ($mbox_mail) {
X    ++$run_queue if 0 == &mbox_mail($mbox_file);
X    unless ($run_queue) {
X        unlink $lockfile if $locked;
X        exit 1;        # -f failed
X    }
X    &add_log("processing queued mails") if $loglvl > 15;
X}
X
X# Suppress statistics when mailagent invoked manually (in not in test mode)
X&no_stats if $nolock && !$test_mode;
X
X&read_stats;            # Get statistics, so that we may update them in memory
X
Xif (!$run_queue) {                # Do not enter here if -q
X    if (0 != &analyze_mail($file_name)) {    # Analyze the mail
X        do add_log("ERROR while processing main message--queing it")
X            if ($loglvl > 0);
X        do queue_mail($file_name);
X        unlink $lockfile;
X        exit 0;                    # Do not continue
X    } else {
X        $file = $file_name;        # Never corrupt $file_name
X        $file =~ s|.*/(.*)|$1|;    # Keep only basename
X        $file = "<stdin>" if $file eq '';
X        do add_log("FILTERED [$file] $Header{'Length'} bytes") if $loglvl > 4;
X    }
X}
X
Xunless ($test_mode) {
X    # Fork a child: we have to take care of the filter script which is waiting
X    # for us to finish processing of the delivered mail.
X    &fork_child() unless $run_queue;
X
X    # From now on, we are in the child process... Don't sleep at all if logging
X    # level is greater that 11 or if $run_queue is true. Logging level of 12
X    # and higher are for debugging and should not be used on a permanent basis
X    # anyway.
X
X    $sleep = 1;                    # Give others a chance to queue their mail
X    $sleep = 0 if $loglvl > 11 || $run_queue;
X
X    while (&pqueue) {            # Eventually process the queue
X        sleep 30 if $sleep;        # Wait in case new mail arrives
X    }
X} else {
X    &pqueue;                    # Process the queue once in test mode
X}
X
X# End of mailagent processing
X&write_stats;                    # Resynchronizes the statistics file
X&contextual_operations;            # Perform all the contextual operations
X&add_log("mailagent exits") if $loglvl > 17;
Xunlink $lockfile if $locked;
Xexit 0;
X
X# Print usage and exit
Xsub usage {
X    print STDERR <<EOF;
XUsage: $prog_name [-dhilqtV] [-s{umary}] [-f file] [-e rules] [-c config]
X       [-L level] [-r file] [-o def] [mailfile]
X  -c : specify alternate configuration file.
X  -d : dump filter rules (special).
X  -e : enter rules to be applied.
X  -f : get messages from UNIX-style mailbox file.
X  -h : print this help message and exits.
X  -i : interactive usage -- print log messages on stderr.
X  -l : list message queue (special).
X  -L : force logging level.
X  -o : overwrite config file with supplied definition.
X  -q : process the queue (special).
X  -r : sepcify alternate rule file.
X  -s : report gathered statistics (special).
X  -t : track rules on stdout.
X  -V : print version number and exits.
XEOF
X    exit 1;
X}
X
X# Read configuration file and alter it with the values specified via -o.
X# Then apply -r and -t by modifying suitable configuration parameters.
Xsub get_configuration {
X    &read_config($config_file);        # Read configuration file and set vars
X    &cf'parse($over_config);        # Overwrite with command line options
X    $cf'rules = $rule_file if $rule_file;        # -r overwrites rule file
X    $loglvl = $log_level if $log_level >= 0;    # -L overwrites logging level
X}
X
X#
X# The filtering routines
X#
X
X# Start-up initializations
Xsub init_all {
X    do init_signals();        # Trap common signals
X    do init_constants();    # Constants definitions
X    do init_interpreter();    # Initialize tables %Priority, %Function, ...
X    do init_env();            # Initialize the %XENV array
X    do init_matcher();        # Initialize special matching functions
X    do init_pseudokey();    # Initialize the pseudo header keys for H table
X    do init_builtins();        # Initialize built-in commands like @RR
X    do init_filter();        # Initialize filter commands
X    do init_special();        # Initialize special user table %Special
X}
X
X# Protect ourselves (trap common signals)
Xsub init_signals {
X    $SIG{'HUP'} = 'emergency';
X    $SIG{'INT'} = 'emergency';
X    $SIG{'QUIT'} = 'emergency';
X    $SIG{'PIPE'} = 'emergency';
X    $SIG{'IO'} = 'emergency';
X    $SIG{'BUS'} = 'emergency';
X    $SIG{'ILL'} = 'emergency';
X    $SIG{'SEGV'} = 'emergency';
X    $SIG{'ALRM'} = 'emergency';
X    $SIG{'TERM'} = 'emergency';
X}
X
X# Constants definitions
Xsub init_constants {
X    require 'ctime.pl';
X    # Values for flock(), usually in <sys/file.h>
X    $LOCK_SH = 1;                # Request a shared lock on file
X    $LOCK_EX = 2;                # Request an exclusive lock
X    $LOCK_NB = 4;                # Make a non-blocking lock request
X    $LOCK_UN = 8;                # Unlock the file
X
X    # Status used by filter
X    $FT_RESTART = 0;            # Abort current action, restart from scratch
X    $FT_CONT = 1;                # Continue execution
X    $FT_REJECT = 2;                # Abort current action, continue filtering
X    $FT_ABORT = 3;                # Abort filtering process
X
X    # Shall we append or remove folder?
X    $FOLDER_APPEND = 0;            # Append in folder
X    $FOLDER_REMOVE = 1;            # Remove folder
X
X    # Used by shell_command and children
X    $NO_INPUT = 0;                # No input (stdin is closed)
X    $BODY_INPUT = 1;            # Give body of mail as stdin
X    $MAIL_INPUT = 2;            # Pipe the whole mail
X    $HEADER_INPUT = 3;            # Pipe the header only
X    $NO_FEEDBACK = 0;            # No feedback wanted
X    $FEEDBACK = 1;                # Feed result of command back into %Header
X
X    # The filter message
X    local($address) = &email_addr;
X    $FILTER =
X        "X-Filter: mailagent [version $mversion PL$patchlevel] for $address";
X
X    # For header fields alteration
X    $HD_STRIP = 0;                # Strip header fields
X    $HD_KEEP = 1;                # Keep header fields
X
X    # Faked leading From line (used for digest items, by SPLIT)
X    local($now) = &ctime(time);
X    chop($now);
X    $FAKE_FROM = "From mailagent " . $now;
X}
X
X# Initializes environment. All the variables are initialized in XENV array
X# The sole purpose of XENV is to be able to know what changes wrt the invoking
X# environment when dumping the rules. It also avoid modifying the environment
X# for our children.
Xsub init_env {
X    foreach (keys(%ENV)) {
X        $XENV{$_} = $ENV{$_};
X    }
X}
X
X# List of special header keys which do not represent a true header field.
Xsub init_pseudokey {
X    %Pseudokey = (
X        'Body', 1,
X        'Head', 1,
X        'All', 1
X    );
X}
X
X#
X# Miscellaneous utilities
X#
X
X# Attempts a mailbox locking. The argument is the name of the file, the file
X# descriptor is the global MBOX, opened for appending.
Xsub mbox_lock {
X    local($file) = @_;                # File name
X    unless ($flock_only) {            # Lock with .lock
X        if (0 != &acs_rqst($file)) {
X            do add_log("WARNING could not lock $file") if $loglvl > 5;
X        }
X    }
X    # Make sure the file is still there and as not been removed while we were
X    # waiting for the lock (in which case our MBOX file descriptor would be
X    # useless: we would write in a ghost file!). This could happen when 'elm'
X    # (or other mail user agent) resynchronizes the mailbox.
X    close MBOX;
X    if (open(MBOX, ">>$file")) {
X        if ($lock_by_flock) {
X            unless (eval 'flock(MBOX, $LOCK_EX)') {    # Ask for exclusive lock
X                do add_log("WARNING could not flock $file: $!") if $loglvl > 5;
X            }
X        }
X    } else {
X        do fatal("could not reopen $file");
X    }
X    seek(MBOX, 0, 2);                # Someone may have appended something
X}
X
X# Remove lock on mailbox
Xsub mbox_unlock {
X    local($file) = @_;                # File name
X    close MBOX;                        # Closing will remove flock lock
X    &free_file($file) unless $flock_only;        # Remove the .lock
X}
X
X# Computes the e-mail address of the user
Xsub email_addr {
X    $cf'user . '@' . &domain_addr;        # E-mail address in internet format
X}
X
X# Domain name address for current host
Xsub domain_addr {
X    local($_);                            # Our host name
X    $_ = $hiddennet if $hiddennet ne '';
X    if ($_ eq '') {
X        chop($_ = `$phostname`);        # Must fork to get hostname, grr...
X        $_ .= $mydomain unless /\./;    # We want something fully qualified
X    }
X    $_;
X}
X
X# Compute the system mailbox file name
Xsub mailbox_name {
X    # If ~/.mailagent provides us with a mail directory, use it and possibly
X    # override value computed by Configure.
X    $maildir = $cf'maildrop if $cf'maildrop ne '';
X    # If Configure gave a valid 'maildir', use it. Otherwise compute one now.
X    unless ($maildir ne '' && -d "$maildir") {
X        $maildir = "/usr/spool/mail";        # Default spooling area
X        -d "/usr/mail" && ($maildir = "/usr/mail");
X        -d "$maildir" || ($maildir = "$cf'home");
X    }
X    local($mbox) = $cf'user;                    # Default mailbox file name
X    $mbox = $cf'mailbox if $cf'mailbox ne '';    # Priority to config variable
X    $mailbox = "$maildir/$mbox";                # Full mailbox path
X    if (! -f "$mailbox" && ! -w "$maildir") {
X        # No mailbox already exists and we can't write in the spool directory.
X        # Use mailfile then, and if we can't write in the directory and the
X        # mail file does not exist either, use ~/mbox.$cf'user as mailbox.
X        $mailbox = $mailfile;        # Determined by configure (%~ and %L form)
X        $mailbox =~ s/%~/$cf'home/go;    # %~ stands for the user directory
X        $mailbox =~ s/%L/$cf'user/go;    # %L stands for the user login name
X        $mailbox =~ m|(.*)/.*|;            # Extract dirname
X        $mailbox = "$cf'home/mbox.$cf'user" unless (-f "mailbox" || -w "$1");
X        do add_log("WARNING using $mailbox for mailbox") if $loglvl > 5;
X    }
X    $mailbox;
X}
X
X# Fork a new mailagent and update the pid in the perl.lock file. The parent
X# then exits and the child continues. This enables the filter which invoked
X# us to finally exit.
Xsub fork_child {
X    local($pid) = fork;
X    if ($pid == -1) {                # We cannot fork, exit.
X        do add_log("ERROR couldn't fork to process the queue") if $loglvl > 5;
X        unlink $lockfile if $locked;
X        exit 0;
X    } elsif ($pid == 0) {            # The child process
X        # Update the pid in the perl.lock file, so that any process which will
X        # use the kill(pid, 0) feature to check whether we are alive or not will
X        # get a meaningful status.
X        if ($locked) {
X            chmod 0644, $lockfile;
X            open(LOCK, ">$lockfile");    # Ignore errors
X            chmod 0444, $lockfile;        # Now it's open, so we may restore mode
X            print LOCK "$$\n";            # Write child's PID
X            close LOCK;
X        }
X        sleep(2);                    # Give filter time to clean up
X    } else {                        # Parent process
X        exit 0;                        # Exit without removing lock, of course
X    }
X    # Only the child comes here and returns
X    do add_log("mailagent continues") if $loglvl > 17;
X}
X
X# Report any eval error and returns 1 if error detected.
Xsub eval_error {
X    if ($@ ne '') {
X        $@ =~ s/ in file \(eval\) at line \d+//;
X        chop($@);
X        &add_log("ERROR $@") if $loglvl > 1;
X    }
X    $@ eq '' ? 0 : 1;
X}
X
X!NO!SUBS!
X$grep -v '^;#' pl/jobnum.pl >>magent
X$grep -v '^;#' pl/read_conf.pl >>magent
X$grep -v '^;#' pl/acs_rqst.pl >>magent
X$grep -v '^;#' pl/free_file.pl >>magent
X$grep -v '^;#' pl/add_log.pl >>magent
X$grep -v '^;#' pl/checklock.pl >>magent
X$grep -v '^;#' pl/lexical.pl >>magent
X$grep -v '^;#' pl/parse.pl >>magent
X$grep -v '^;#' pl/analyze.pl >>magent
X$grep -v '^;#' pl/runcmd.pl >>magent
X$grep -v '^;#' pl/filter.pl >>magent
X$grep -v '^;#' pl/matching.pl >>magent
X$grep -v '^;#' pl/locate.pl >>magent
X$grep -v '^;#' pl/rfc822.pl >>magent
X$grep -v '^;#' pl/macros.pl >>magent
X$grep -v '^;#' pl/header.pl >>magent
X$grep -v '^;#' pl/actions.pl >>magent
X$grep -v '^;#' pl/stats.pl >>magent
X$grep -v '^;#' pl/queue_mail.pl >>magent
X$grep -v '^;#' pl/pqueue.pl >>magent
X$grep -v '^;#' pl/builtins.pl >>magent
X$grep -v '^;#' pl/rules.pl >>magent
X$grep -v '^;#' pl/period.pl >>magent
X$grep -v '^;#' pl/eval.pl >>magent
X$grep -v '^;#' pl/dbr.pl >>magent
X$grep -v '^;#' pl/history.pl >>magent
X$grep -v '^;#' pl/once.pl >>magent
X$grep -v '^;#' pl/makedir.pl >>magent
X$grep -v '^;#' pl/emergency.pl >>magent
X$grep -v '^;#' pl/listqueue.pl >>magent
X$grep -v '^;#' pl/mbox.pl >>magent
X$grep -v '^;#' pl/context.pl >>magent
X$grep -v '^;#' pl/extern.pl >>magent
X$grep -v '^;#' pl/mailhook.pl >>magent
X$grep -v '^;#' pl/interface.pl >>magent
X$grep -v '^;#' pl/getdate.pl >>magent
Xchmod 755 magent
X$eunicefix magent
END_OF_FILE
  if test 18483 -ne `wc -c <'agent/magent.SH'`; then
    echo shar: \"'agent/magent.SH'\" unpacked with wrong size!
  fi
  chmod +x 'agent/magent.SH'
  # end of 'agent/magent.SH'
fi
if test -f 'agent/pl/analyze.pl' -a "${1}" != "-c" ; then
  echo shar: Will not clobber existing file \"'agent/pl/analyze.pl'\"
else
  echo shar: Extracting \"'agent/pl/analyze.pl'\" \(13269 characters\)
  sed "s/^X//" >'agent/pl/analyze.pl' <<'END_OF_FILE'
X;# $Id: analyze.pl,v 2.9.1.4 92/11/01 15:45:26 ram Exp $
X;#
X;#  Copyright (c) 1992, Raphael Manfredi
X;#
X;#  You may redistribute only under the terms of the GNU General Public
X;#  Licence as specified in the README file that comes with dist.
X;#
X;# $Log:    analyze.pl,v $
X;# Revision 2.9.1.4  92/11/01  15:45:26  ram
X;# patch11: added some blank lines for easier reading
X;#
X;# Revision 2.9.1.3  92/08/26  13:08:27  ram
X;# patch8: parsing code moved to a separate library file
X;#
X;# Revision 2.9.1.2  92/08/02  16:08:39  ram
X;# patch2: added support for negated selectors
X;# patch2: header field names are now case-normalized (to or TO -> To)
X;#
X;# Revision 2.9.1.1  92/07/25  12:37:06  ram
X;# patch1: did not correctly escape first From line within body
X;#
X;# Revision 2.9  92/07/14  16:49:36  ram
X;# 3.0 beta baseline.
X;#
X;#
X#
X# Analyzing mail
X#
X
X# Special users. Note that as login name matches are done in a case-insensitive
X# manner, there is no need to upper-case any of the followings.
Xsub init_special {
X    %Special = (
X        'root', 1,                # Super-user
X        'uucp', 1,                # Unix to Unix copy
X        'daemon', 1,            # Not a real user, hopefully
X        'news', 1,                # News daemon
X        'postmaster', 1,        # X-400 mailer-daemon name
X        'newsmaster', 1,        # My convention for news administrator--RAM
X        'usenet', 1,            # Aka newsmaster
X        'mailer-daemon', 1,        # Sendmail
X        'nobody', 1                # Nobody we've heard of
X    );
X}
X
X# Initialize global variables, before analyzing each mail
Xsub init_global_state {
X    undef %Variable;            # User-defined variables
X}
X
X# This is the heart of the mail agent
X# Scan the message in $file_name and apply the filtering rules
Xsub analyze_mail {
X    local($file) = shift(@_);    # Mail file to be parsed
X    local($mode);                # Mode (optional)
X    local($wmode)= "INITIAL";    # Working mode (the mode we are in)
X    local($selector);            # Selector (mandatory)
X    local($rulentry);            # Entry in rule H table
X    local($pattern);            # Pattern for selection, as written in rules
X    local($action);                # Related action
X    local($last_selector);        # Last used selector
X    local($rules);                # A copy of the rules
X    local($matched);            # Flag set to true if a rule is matched
X    local(%Matched);            # Records the selectors which have been matched
X    local($header);                # Header entry name to look for in Header table
X    local($status);                # Status returned by xeqte
X    local($ever_matched) = 0;    # Did we ever matched a single saving rule ?
X    local($ever_saved) = 0;        # Did we ever saved a message ?
X    local($ever_seen) = 0;        # Did we ever enter seen mode ?
X    local($vacation) = 1;        # Vacation message allowed a priori
X    local(@Executed);            # Records already executed rules
X    local($selist);                # Key used to detect identical selector lists
X    local(%Inverted);            # Records inverted '!' selectors which matched
X
X    # First parse the mail and fill in the %Header table
X
X    &init_global_state;            # Initializes global variables
X    &parse_mail($file);            # Parse the mail and fill-in H tables
X    return 0 unless defined $Header{'All'};
X    &reception if $loglvl > 8;    # Log mail reception
X    &run_builtins;                # Execute builtins, if any were found
X
X    # Now analyze the mail. If there is already a X-Filter header, then the
X    # mail has already been processed. In that case, the default action is
X    # performed: leave it in the incomming mailbox with no further action.
X    # This should prevent nasty loops.
X
X    do add_log ("analyzing mail") if $loglvl > 18;
X    $header = $Header{'X-Filter'};                # Mulitple occurences possible
X    if ($header ne '') {                        # Hmm... already filtered...
X        local(@filter) = split(/\n/, $header);    # Look for each X-Filter
X        local($address) = &email_addr;            # Our e-mail address
X        local($done) = 0;                        # Already processed ?
X        foreach (@filter) {                        # Maybe we'll find ourselves
X            if (/mailagent.*for (\S+)/) {        # Mark left by us ?
X                $done = 1 if $1 eq $address;    # Yes, we did that
X                $* = 1;
X                # Remove that X-Filter line, LEAVE will add one anyway
X                $Header{'Head'} =~ s/^X-Filter:\s*mailagent.*for $address\n//;
X                $* = 0;
X                last;
X            }
X        }
X        if ($done) {            # We already processed that message
X            do add_log("NOTICE already filtered, entering seen mode")
X                if $loglvl > 5;
X            $wmode = '_SEEN_';    # This is a special mode
X            $ever_seen = 1;        # This will prevent vacation messages
X            &s_seen;            # Update statistics
X        }
X    }
X
X    # The @Executed array records whether a specified action for a rule was
X    # executed. Loops are possible via the RESTART action, and as there is
X    # almost no way to exit from such a loop (there is one with FEED and RESYNC)
X    # I decided to prohibit them. Hence a given action is allowed to be executed
X    # only once during a mail analysis (modulo each possible working mode).
X    # For a rule number n, $Executed[n] is a collection of modes in which the
X    # rule was executed, comma separated.
X
X    $Executed[$#Rules] = '';        # Pre-extend array
X
X    # Order wrt the one in the rule file is guaranteed. I use a for construct
X    # with indexed access to be able to restart from the beginning upon
X    # execution of RESTART. This also helps filling in the @Executed array.
X
X    local($i, $j);            # Indexes within rule array
X
X    rule: for ($i = 0; $i <= $#Rules; $i++) {
X        $j = $i + 1;
X        $_ = $Rules[$i];
X
X        # The %Matched array records the boolean value associated with each
X        # possible selector. If two identical selector are found, the values
X        # are OR'ed (and we stop evaluating as soon as one is true). Otherwise,
X        # the values are AND'ed (for different selectors, but all are evaluated
X        # in case we later find another identical selectors -- no sort is done).
X        # The %Inverted which records '!' selector matches has all the above
X        # rules inverted according to De Morgan's Law.
X
X        undef %Matched;                            # Reset matching patterns
X        undef %Inverted;                        # Reset negated patterns
X        $rules = $_;                            # Work on a copy
X        $rules =~ s/^(.*){// && ($mode = $1);        # First word is the mode
X        $rules =~ s/\s*(.*)}// && ($action = $1);    # Followed by action
X        $mode =~ s/\s*$//;                            # Remove trailing spaces
X        $rules =~ s/^\s+//;                        # Remove leading spaces
X        $last_selector = "";                    # Last selector used
X
X        # Make sure we are in the correct mode. The $mode variable holds a
X        # list of comma-separated modes. If the working mode is found in it
X        # then the rules apply. Otherwise, skip them.
X
X        do add_log ("in mode '$wmode' for $mode") if $loglvl > 19;
X        $mode = "," . $mode . ",";
X
X        # The special ALL mode matches anything but the other sepcial mode
X        # for already filtered messages.
X
X        unless ($mode =~ /,ALL,/) {
X            next rule unless $mode =~ /,$wmode,/;
X        } else {
X            next rule if $wmode eq '_SEEN_' && $mode !~ /,_SEEN_,/;
X        }
X
X        # Now loop over all the keys and apply the patterns in turn
X
X        &reset_backref;                        # Reset backreferences
X        foreach $key (split(/ /, $rules)) {
X            $rulentry = $Rule{$key};
X            $rulentry =~ s/^\s*([^\/]*:)// && ($selector = $1);
X            $rulentry =~ s/^\s*//;
X            $pattern = $rulentry;
X            if ($last_selector ne $selector) {    # Update last selector
X                $last_selector = $selector;
X            }
X            $selector =~ s/:$//;            # Remove final ':' on selector
X            $* = 1;                            # There can be multi-line matching
X            do add_log ("selector '$selector', pattern '$pattern'")
X                if $loglvl > 19;
X
X            # Identical (lists of) selectors are logically OR'ed. To make sure
X            # 'To Cc:' and 'Cc To:' are correctly OR'ed, the selector list is
X            # alphabetically sorted.
X
X            $selist = join(',', sort split(' ', $selector));
X
X            # Direct selectors and negated selectors (starting with a !) are
X            # kept separately, because the rules are dual:
X            # For normal selectors (kept in %Matched):
X            #  - Identical are OR'ed
X            #  - Different are AND'ed
X            # For inverted selectors (kept in %Inverted):
X            #  - Identical are AND'ed
X            #  - Different are OR'ed
X            # Multiple selectors like 'To Cc' are sorted according to the first
X            # selector on the list, i.e. 'To !Cc' is normal but '!To Cc' is
X            # inverted.
X
X            if ($selector =~ /^!/) {        # Inverted selector
X                # In order to guarantee an optimized AND, we first check that
X                # no previous failure has been reported for the current set of
X                # selectors.
X                unless (defined $Inverted{$selist} && !$Inverted{$selist}) {
X                    $Inverted{$selist} = &match($selector, $pattern);
X                }
X            } else {                        # Normal selector
X                # Here it is the OR which is guaranteed to be optimized. Do
X                # not attempt the match if an identical selector already
X                # matched sucessfully.
X                unless ($Matched{$selist}) {
X                    $Matched{$selist} = &match($selector, $pattern);
X                }
X            }
X        }
X
X        # Both groups recorded in %Matched and %Inverted are globally AND'ed
X        # However, only one match is necessary within %Inverted whilst all
X        # must have matched within %Matched...
X
X        $matched = 1;                        # Assume everything matched
X        foreach $key (keys %Matched) {        # All entries must have matched
X            $matched = 0 unless $Matched{$key};
X        }
X        if ($matched) {                        # If %Matched failed, all failed!
X            foreach $key (keys %Inverted) {    # Only one entry needs to match
X                $matched = 0 unless $Inverted{$key};
X                last if $matched;
X            }
X        }
X
X        if ($matched) {                        # Execute action if pattern matched
X            # Make sure the rule has not already been executed in that mode
X            if ($Executed[$i] =~ /,$wmode,/) {
X                do add_log("NOTICE loop detected, rule $j, state $wmode")
X                    if $loglvl > 5;
X                last rule;                    # Processing ends here
X            } else {                        # Rule was never executed
X                $Executed[$i] = ',' unless $Executed[$i];
X                $Executed[$i] .= "$wmode,";
X            }
X            $ever_matched = 1;                # At least one match
X            &add_log("MATCH on rule #$j in mode $wmode") if $loglvl > 8;
X            &track_rule($j, $wmode) if $track_all;
X            &s_match($j, $wmode);            # Record match for statistics
X            $status = do xeqte($action);
X            last rule if $status == $FT_CONT;
X            $ever_matched = 0;                # No match if REJECT or RESTART
X            next rule if $status == $FT_REJECT;
X            $i = -1;        # Restart analysis from the beginning ($FT_RESTART)
X        }
X    }
X
X    # Deal with vacation mode. It applies only on mail not previously seen.
X    # The vacation mode must be turned on in the configuration file. The
X    # conditions for a vacation message to be sent are:
X    #   - Message was directly sent to the user.
X    #   - Message does not come from a special user like root.
X    #   - Vacation message was not disabled via a VACATION command
X
X    if (!$ever_seen && $cf'vacation =~ /on/i && $vacation) {
X        unless (&special_user) {    # Not from special user and sent to me
X            # Send vacation message only once per address per period
X            &xeqte("ONCE (%r,vacation,$cf'vacperiod) MESSAGE $cf'vacfile");
X            &s_vacation;        # Message received while in vacation
X        }
X    }
X
X    # Default action if no rule ever matched
X
X    unless ($ever_matched) {
X        do add_log("NOTICE no match, leaving in mailbox") if $loglvl > 5;
X        do xeqte("LEAVE");            # Default action anyway
X        &s_default;                    # One more application of default rule
X    } else {
X        unless ($ever_saved) {
X            do add_log("NOTICE not saved, leaving in mailbox") if $loglvl > 5;
X            do xeqte("LEAVE");        # Leave if message not saved
X            &s_saved;                # Message saved by default rule
X        }
X    }
X    &s_filtered($Header{'Length'});        # Update statistics
X    0;                                    # Ok status
X}
X
X# Return true if the mail was from a special user (root, uucp...) or if the
X# mail was not directly mailed to the user (i.e. it comes from a distribution
X# list or has bounced somewhere).
Xsub special_user {
X    # Before sending the vacation message, we have to make sure the mail
X    # was sent to the user directly, through a 'To:' or a 'Cc:'. Otherwise,
X    # it must be from a mailing list or a 'Bcc:' and we don't want to
X    # send something back in that case.
X    local($matched) = do match_list("To", $cf'user);
X    $matched = do match_list("Cc", $cf'user) unless $matched;
X    unless ($matched) {
X        do add_log("mail was not directly sent to $cf'user") if $loglvl > 8;
X        return 1;
X    }
X    # If there is a Precedence: header set to either 'bulk' or 'junk', then
X    # we do not reply either.
X    local($prec) = $Header{'Precedence'};
X    if ($prec =~ /^bulk|junk/i) {
X        do add_log("mail was tagged with a '$prec' precedence") if $loglvl > 8;
X        return 1;
X    }
X    # Make sure the mail does not come from a "special" user, as listed in
X    # the %Special array (root, uucp...)
X    $matched = 0;
X    local($matched_login);
X    foreach $login (keys %Special) {
X        $matched = do match_single("From", $login);
X        $matched_login = $login if $matched;
X        last if $matched;
X    }
X    if ($matched) {
X        do add_log("mail was from special user $matched_login")
X            if $loglvl > 8;
X        return 1;
X    }
X}
X
X# Log reception of mail (sender and subject fields). This is mainly intended
X# for people like me who parse the logfile once in a while to do more
X# statistics about mail reception. Hence the another distinction between
X# original mails and answers.
Xsub reception {
X    local($subject) = $Header{'Subject'};
X    local($sender) = $Header{'Sender'};
X    local($from) = $Header{'From'};
X    &add_log("FROM $from");
X    &add_log("VIA $sender")
X        if $sender ne '' && $sender ne (&parse_address($from))[0];
X    if ($subject ne '') {
X        if ($subject =~ s/^Re:\s*//) {
X            &add_log("REPLY $subject");
X        } else {
X            &add_log("ABOUT $subject");
X        }
X    }
X    print "-------- From $from\n" if $track_all;
X}
X
X# Print match on STDOUT when -t option is used
Xsub track_rule {
X    local($number, $mode) = @_;
X    print "*** Match on rule $number in mode $mode ***\n";
X    &print_rule($number);
X}
X
END_OF_FILE
  if test 13269 -ne `wc -c <'agent/pl/analyze.pl'`; then
    echo shar: \"'agent/pl/analyze.pl'\" unpacked with wrong size!
  fi
  # end of 'agent/pl/analyze.pl'
fi
if test -f 'agent/test/filter/list.t' -a "${1}" != "-c" ; then
  echo shar: Will not clobber existing file \"'agent/test/filter/list.t'\"
else
  echo shar: Extracting \"'agent/test/filter/list.t'\" \(1475 characters\)
  sed "s/^X//" >'agent/test/filter/list.t' <<'END_OF_FILE'
X# This tests mathching on list selectors like To or Newsgroups.
Xdo '../pl/filter.pl';
X
Xfor ($i = 1; $i <= 8; $i++) {
X    unlink "$user.$i";
X}
X
X&add_header('X-Tag: list');
X`$cmd`;
X$? == 0 || print "1\n";
X-f "$user.1" || print "2\n";
Xunlink "$user.1";
X
X&replace_header('To: uunet!eiffel.com!max, [e-mail]');
X`$cmd`;
X$? == 0 || print "3\n";
X-f "$user.2" || print "4\n";
Xunlink "$user.2";
X
X&replace_header('To: [e-mail] (Super User), max <[e-mail]>');
X`$cmd`;
X$? == 0 || print "5\n";
X-f "$user.3" || print "6\n";
Xunlink "$user.3";
X
X# Following is illeaal in RFC-822: should be "[e-mail]" <maxime>
X&replace_header('To: [e-mail] (Riot Manager), [e-mail] <maxime>');
X`$cmd`;
X$? == 0 || print "7\n";
X-f "$user.4" || print "8\n";
Xunlink "$user.4";
X
X&replace_header('To: other, me, [e-mail], and, so, on');
X`$cmd`;
X$? == 0 || print "9\n";
X-f "$user.5" || print "10\n";
Xunlink "$user.5";
X
X&replace_header('To: other, me, [e-mail], and, so, on');
X`$cmd`;
X$? == 0 || print "11\n";
X-f "$user.6" || print "12\n";
Xunlink "$user.6";
X
X&replace_header('To: other, me, [e-mail], and, so, on');
X&add_header('Newsgroups: comp.lang.perl, news.groups, news.lists');
X`$cmd`;
X$? == 0 || print "13\n";
X-f "$user.7" || print "14\n";
Xunlink "$user.7";
X
X&replace_header('Newsgroups: comp.lang.perl, news.groups, news.answers');
X`$cmd`;
X$? == 0 || print "15\n";
X-f "$user.8" || print "16\n";
Xunlink "$user.8";
X
Xunlink 'mail';
Xprint "0\n";
END_OF_FILE
  if test 1475 -ne `wc -c <'agent/test/filter/list.t'`; then
    echo shar: \"'agent/test/filter/list.t'\" unpacked with wrong size!
  fi
  # end of 'agent/test/filter/list.t'
fi
echo shar: End of archive 8 \(of 17\).
cp /dev/null ark8isdone
MISSING=""
for I in 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 ; do
    if test ! -f ark${I}isdone ; then
    MISSING="${MISSING} ${I}"
    fi
done
if test "${MISSING}" = "" ; then
    echo You have unpacked all 17 archives.
    rm -f ark[1-9]isdone ark[1-9][0-9]isdone
else
    echo You still must unpack the following archives:
    echo "        " ${MISSING}
fi
exit 0
exit 0 # Just in case...