#! /usr/bin/perl

# Log.pm - This module includes all Logging-related functions
# RCS Identication ; $Revision: 1.17 $ ; $Date: 2005/01/26 14:09:33 $ 
#
# Sympa - SYsteme de Multi-Postage Automatique
# Copyright (c) 1997, 1998, 1999, 2000, 2001 Comite Reseau des Universites
# Copyright (c) 1997,1998, 1999 Institut Pasteur & Christophe Wolfhugel
#
# 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

package Log;

require Exporter;
use Sys::Syslog;
use Carp;

@ISA = qw(Exporter);
@EXPORT = qw(fatal_err do_log do_openlog $log_level);

my ($log_facility, $log_socket_type, $log_service);
local $log_level |= 0;

sub fatal_err {
    my $m  = shift;
    my $errno  = $!;
    
    syslog('err', $m, @_);
    syslog('err', "Exiting.");
    $m =~ s/%m/$errno/g;

    my $full_msg = sprintf $m,@_;

    ## Notify listmaster
    &List::send_notify_to_listmaster('sympa_died', $Conf{'domain'}, $full_msg);

    printf STDERR "$m\n", @_;
    exit(1);   
}

sub do_log {
    my $fac = shift;
    my $m = shift;

    my $errno = $!;
    my $debug = 0;

    my $level = 0;

    $level = 1 if ($fac =~ /^debug$/) ;

    if ($fac =~ /debug(\d)/ ) {
	$level = $1;
	$fac = 'debug';
    }
 
    # do not log if log level if too high regarding the log requested by user 
    return if ($level > $log_level);

    unless (syslog($fac, $m, @_)) {
	&do_connect();
	    syslog($fac, $m, @_);
    }
    if ($main::options{'foreground'}) {
	if (!$main::options{'batch'} 
	    || ($main::options{'batch'} && $fac eq 'err')) {
	    $m =~ s/%m/$errno/g;
	    printf STDERR "$m\n", @_;
	}
    }    
}


sub do_openlog {
   my ($fac, $socket_type, $service) = @_;
   $service ||= 'sympa';

   ($log_facility, $log_socket_type, $log_service) = ($fac, $socket_type, $service);

#   foreach my $k (keys %options) {
#       printf "%s = %s\n", $k, $options{$k};
#   }

   &do_connect();
}

sub do_connect {
    if ($log_socket_type =~ /^(unix|inet)$/i) {
      Sys::Syslog::setlogsock(lc($log_socket_type));
    }
    # close log may be usefull : if parent processus did open log child process inherit the openlog with parameters from parent process 
    closelog ; 
    openlog("$log_service\[$$\]", 'ndelay', $log_facility);
}

1;








