#!@PERL_EXECUTABLE@ -wT
#
# ==========================================================================
#
# ZoneMinder Package Control Script, $Date$, $Revision$
# Copyright (C) 2001-2008 Philip Coombes
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
#
# ==========================================================================

use strict;
use bytes;

# ==========================================================================
#
# Don't change anything below here
#
# ==========================================================================

@EXTRA_PERL_LIB@
use ZoneMinder;
use ZoneMinder::Monitor;
use ZoneMinder::State;
use ZoneMinder::Filter;
use DBI;
use POSIX;
use Time::HiRes qw/gettimeofday/;
use autouse 'Pod::Usage'=>qw(pod2usage);

# Detaint our environment
$ENV{PATH}  = '/bin:/usr/bin:/usr/local/bin';
$ENV{SHELL} = '/bin/sh' if exists $ENV{SHELL};
delete @ENV{qw(IFS CDPATH ENV BASH_ENV)};
my $store_state=''; # PP - will remember state name passed

logInit();

my $command = $ARGV[0]||'';
if ( $command eq 'version' ) {
  print ZoneMinder::Base::ZM_VERSION . "\n";
  exit(0);
}

my $state;

my $dbh = zmDbConnect();
Debug("Command: $command");
if ( $command and ( $command !~ /^(?:start|stop|restart|status|logrot|version)$/ ) ) {
  # Check to see if it's a valid run state
  if ($state = ZoneMinder::State->find_one(Name=>$command)) {
    $state->{Definitions} = [];
    foreach (split(',', $state->{Definition})) {
      my @state = split(':', $_);
      my ($id, $capturing, $analysing, $recording);
      if (@state == 3) {
        ($id, my $function, my $enabled) = @state;
        if (!$enabled) {
          ($capturing, $analysing, $recording) = ('None','None','None');
        } elsif ($function eq 'None') {
          ($capturing, $analysing, $recording) = ('None','None','None');
        } elsif ($function eq 'Monitor') {
          ($capturing, $analysing, $recording) = ('Always','None','None');
        } elsif ($function eq 'Modect') {
          ($capturing, $analysing, $recording) = ('Always','Always','OnMotion');
        } elsif ($function eq 'Mocord') {
          ($capturing, $analysing, $recording) = ('Always','Always','OnMotion');
        } elsif ($function eq 'Record') {
          ($capturing, $analysing, $recording) = ('Always','Always','Always');
        } else {
          Error("Unknown function $function, defaulting to Mocord"); 
        }
      } elsif (@state == 4) {
        ($id, $capturing, $analysing, $capturing) = @state;
      } else {
        Error("Unknown state in @state");
      }
      push @{$state->{Definitions}}, {Id=>$id, Capturing=>$capturing, Analysing=>$analysing, Recording=>$recording};
    } # end foreach state definition
    $store_state = $command; # PP - Remember the name that was passed to search in DB
    $command = 'state';
  } else {
    $command = undef;
  }
} # end if not one of the usual commands

if ( !$command ) {
  pod2usage(-exitstatus => -1);
}

# PP - Sane state check
isActiveSanityCheck();

# Move to the right place
chdir($Config{ZM_PATH_WEB}) or Fatal("Can't chdir to $Config{ZM_PATH_WEB}: $!");

my $dbg_id = '';

Info("Command: $command");

my $retval = 0;

if ( $command eq 'state' ) {
  Info("Updating DB: $state->{Name}");
  foreach my $monitor (ZoneMinder::Monitor->find(
        ($Config{ZM_SERVER_ID} ? (ServerId=>$Config{ZM_SERVER_ID}) : () ), order=>'Id ASC')
      ) {
    foreach my $definition ( @{$state->{Definitions}} ) {
# FIXME WHY a REGEXP
      if ( $monitor->{Id} =~ /^$definition->{Id}$/ ) {
        $monitor->{NewFunction} = $definition->{Function};
        $monitor->{NewEnabled} = $definition->{Enabled};
        last;
      }
    if (
        ($monitor->{Capturing} ne $definition->{Capturing})
        or
        ($monitor->{Analysing} ne $definition->{Analysing})
          or 
        ($monitor->{Recording} ne $definition->{Recording})
          ) {
        $monitor->save({ map { $_ => $$definition{$_} } qw(Capturing Analysing Recording) });
        last; # definition
      } # end if
    } # end foreach definition
  } # end foreach monitor

  # PP - Now mark a specific state as active
  resetStates();
  Info("Marking $store_state as Enabled");
  $state->save({IsActive=>1});

  # PP - zero out other states isActive
  $command = 'restart';
} # end if command = state

# Check if we are running systemd and if we have been called by the system
if ( $command =~ /^(start|stop|restart)$/ ) {
# We have to detaint to keep perl from complaining
  $command = $1;

  if ( systemdRunning() && !calledBysystem() ) {
    qx(@BINDIR@/zmsystemctl.pl $command);
    $command = '';
  }
}

if ( $command =~ /^(?:stop|restart)$/ ) {
  my $status = runCommand('zmdc.pl check');
  Debug("zmdc.pl check = $status");

  if ( $status eq 'running' ) {
    runCommand('zmdc.pl shutdown');
    zmMemTidy();
  } else {
    $retval = 1;
  }
}

if ( $command =~ /^(?:start|restart)$/ ) {
  my $status = runCommand('zmdc.pl check');
  Debug("zmdc.pl check = $status");

  if ( $status eq 'stopped' ) {
    if ( $Config{ZM_DYN_DB_VERSION}
        and ( $Config{ZM_DYN_DB_VERSION} ne ZM_VERSION )
       ) {
         my ( $db_major, $db_minor, $db_micro ) = split(/\./, $Config{ZM_DYN_DB_VERSION});
         my ( $major, $minor, $micro ) = split(/\./, ZM_VERSION);
         if ( $db_major != $major or $db_minor != $minor ) {
           Fatal('Version mismatch, system is version '.ZM_VERSION
             .', database is '.$Config{ZM_DYN_DB_VERSION}
             .', please run zmupdate.pl to update.'
           );
           exit(-1);
         } else {
           Error('Version mismatch, system is version '.ZM_VERSION
             .', database is '.$Config{ZM_DYN_DB_VERSION}
             .', please run zmupdate.pl to update.'
           );
         }
    } # end if version mismatch

# Recreate the temporary directory if it's been wiped
    verifyFolder('@ZM_TMPDIR@');

# Recreate the run directory if it's been wiped
    verifyFolder('@ZM_RUNDIR@');

# Recreate the sock directory if it's been wiped
    verifyFolder('@ZM_SOCKDIR@');

    zmMemTidy();
    runCommand('zmdc.pl startup');

    my $Server = undef;
    my @monitors;
    if ( $Config{ZM_SERVER_ID} ) {
      require ZoneMinder::Server;
      Info("Multi-server configuration detected. Starting up services for server $Config{ZM_SERVER_ID}");
      $Server = new ZoneMinder::Server($Config{ZM_SERVER_ID});
      @monitors = ZoneMinder::Monitor->find(ServerId=>$Config{ZM_SERVER_ID});
    } else {
      Info('Single server configuration detected. Starting up services.');
      @monitors = ZoneMinder::Monitor->find(ServerId=>$Config{ZM_SERVER_ID});
    }

    foreach my $monitor (@monitors) {
      if ( $monitor->{Capturing} ne 'None' && $monitor->{Type} ne 'WebSite' ) {
        if ( $monitor->{Type} eq 'Local' ) {
          runCommand("zmdc.pl start zmc -d $monitor->{Device}");
        } else {
          runCommand("zmdc.pl start zmc -m $monitor->{Id}");
        }
        if ( $Config{ZM_OPT_CONTROL} ) {
          if ( $monitor->{Controllable} ) {
            runCommand("zmdc.pl start zmcontrol.pl --id $monitor->{Id}");
            if ( $monitor->{TrackMotion} ) {
              if ($monitor->{Analysing} ne 'None') {
                runCommand("zmdc.pl start zmtrack.pl -m $monitor->{Id}");
              } else {
                Warning('Monitor is set to track motion, but does not have motion detection enabled.');
              } # end if Has motion enabled
            } # end if track motion
          } # end if controllable
        } # end if ZM_OPT_CONTROL        
      } # end if capturing is not none or Website
    } # end foreach monitor

    my @filters = ZoneMinder::Filter->find(Background=>1);
    if (@filters) {
      foreach my $filter (@filters) {
        runCommand("zmdc.pl start zmfilter.pl --filter_id=$$filter{Id} --daemon");
      }
    } else {
      runCommand('zmdc.pl start zmfilter.pl');
    }

    if ( $Config{ZM_RUN_AUDIT} ) {
      if ( $Server and exists $$Server{zmaudit} and ! $$Server{zmaudit} ) {
        Debug('Not running zmaudit.pl because it is turned off for this server.');
      } else {
        runCommand('zmdc.pl start zmaudit.pl -c');
      }
    }
    if ( $Config{ZM_OPT_TRIGGERS} ) {
      if ( $Server and exists $$Server{zmtrigger} and ! $$Server{zmtrigger} ) {
        Debug('Not running zmtrigger.pl because it is turned off for this server.');
      } else {
        runCommand('zmdc.pl start zmtrigger.pl');
      }
    }
    if ( $Config{ZM_OPT_X10} ) {
      runCommand('zmdc.pl start zmx10.pl -c start');
    }
    runCommand('zmdc.pl start zmwatch.pl');
    if ( $Config{ZM_CHECK_FOR_UPDATES} ) {
      runCommand('zmdc.pl start zmupdate.pl -c');
    }
    if ( $Config{ZM_TELEMETRY_DATA} ) {
      runCommand('zmdc.pl start zmtelemetry.pl');
    }
    if ($Config{ZM_OPT_USE_EVENTNOTIFICATION} ) {
      if ( $Server and exists $$Server{zmeventnotification} and ! $$Server{zmeventnotification} ) {
        Debug('Not running zmnotification.pl because it is turned off for this server.');
      } else {
        runCommand('zmdc.pl start zmeventnotification.pl');
      }
    }
    if ( $Server and exists $$Server{zmstats} and ! $$Server{zmstats} ) {
      Debug('Not running zmstats.pl because it is turned off for this server.');
    } else {
      runCommand('zmdc.pl start zmstats.pl');
    }
    if ( $Config{ZM_MIN_RTSP_PORT} ) {
      runCommand('zmdc.pl start zm_rtsp_server');
    }
  } else {
    $retval = 1;
  }
} # end if command is start or restart

if ($command eq 'status') {
  my $status = runCommand('zmdc.pl check');

  print(STDOUT $status."\n");
} elsif ($command eq 'logrot') {
  runCommand('zmdc.pl logrot');
}

exit($retval);

# PP - Make sure isActive is on and only one
sub isActiveSanityCheck {
  Info('Sanity checking States table...');
  $dbh = zmDbConnect() if ! $dbh;

# PP - First, make sure default exists and there is only one
  my @states = ZoneMinder::State->find(Name=>'default', order=>'Id ASC');
# PP - no row, or too many rows. Either case is an error

  my $default_state;
  while (@states > 1) {
    my $state = shift @states;
    $state->delete();
  }
  if (!@states) {
    $default_state = new ZoneMinder::State();
    $default_state->save({Name=>'default', Definition=>'', IsActive=>1});
  } else {
    $default_state = shift @states;
  }

  @states = ZoneMinder::State->find(IsActive=>1);
  if (@states != 1) {
    Info('Fixing States table so only one run state is active');
    resetStates();
    $default_state->save({IsActive=>1});
  }
} # end sub isActiveSanityCheck

# PP - zeroes out isActive for all states
sub resetStates {
  $dbh = zmDbConnect() if ! $dbh;
  $dbh->do('UPDATE `States` SET `IsActive`=0')
    or Fatal("Can't execute: ".$dbh->errstr());
}

sub systemdRunning {
  my $output = qx(ps -o comm="" -p 1);
  return scalar ( $output =~ /systemd/ );
}

sub calledBysystem {
  my $ppid = getppid();

  my $output = qx(ps -o comm="" -p $ppid);
  #chomp( $output );

  return ($output =~ /^(?:systemd|init)$/);
}

sub verifyFolder {
  my $folder = shift;

  # Recreate the temporary directory if it's been wiped
  if ( !-e $folder ) {
    Debug("Recreating directory '$folder'");
    mkdir($folder, 0774)
      or Fatal( "Can't create missing temporary directory '$folder': $!" );
    my ( $runName ) = getpwuid($>);
    if ( $runName ne $Config{ZM_WEB_USER} ) {
      # Not running as web user, so should be root in which case
      # chown the directory
      my ( $webName, $webPass, $webUid, $webGid ) = getpwnam($Config{ZM_WEB_USER})
        or Fatal("Can't get details for web user '$Config{ZM_WEB_USER}': $!");
      chown($webUid, $webGid, $folder)
        or Fatal("Can't change ownership of '$folder' to '"
            .$Config{ZM_WEB_USER}.':'.$Config{ZM_WEB_GROUP}."': $!"
            );
    } # end if runName ne ZM_WEB_USER
  } # end if folder doesn't exist
} # end sub verifyFolder

1;
__END__

=head1 NAME

zmpkg.pl - ZoneMinder Package Control Script

=head1 SYNOPSIS

zmpkg.pl {start|stop|restart|status|logrot|state|version}

=head1 DESCRIPTION

  This script is used to start and stop the ZoneMinder package primarily to
allow command line control for automatic restart on reboot (see zm script)

=cut