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#!/usr/bin/perl -w
#!/usr/bin/perl -Tw
# (Text::Template can't do -T, but no user input is used dangerously)
#
# $Id: shift.cgi,v 1.6 2003-07-30 22:16:36 ivan Exp $
#
# Copyright (C) 2000 Adam Gould
# Copyright (C) 2000 Michal Migurski
# Copyright (C) 2000 Ivan Kohler
# All rights reserved.
#
# This program is free software; you can redistribute it and/or modify it under
# the same terms as Perl itself.
###
# user-servicable parts
###
$template_file = '/var/www/www.420.am/staff/table.html';
$data_directory = '/var/www/www.420.am/staff/data';
#$mail_smtpserver = 'localhost'; # set blank to disable
$mail_smtpserver = ''; # set blank to disable
$mail_from = 'ivan-misconfigured-shift-from@420.am';
$mail_subject = 'Your shift has been replaced';
@mail_cc = (
'ivan-misconfigured-shift-cc@420.am',
'ivan-misconfigured-shift-cc2@420.am'
);
$mail_footer = <<END;
Sorry, I don't have any more information. The person who installed the
staff sheet didn't customize this message.
END
###
# end of user-servicable parts
###
use strict;
use vars qw( $template_file $data_directory $mail_smtpserver $mail_from
$mail_subject @mail_cc $mail_footer
$cgi $template %shifthash %warning @messages $magic );
use subs qw( form inputbox );
use Fcntl ":flock";
use CGI 2.15;
use CGI::Carp qw(fatalsToBrowser);
use Text::Template;
use Mail::Internet;
use Mail::Header;
use Date::Format;
use HTML::Entities;
$cgi = new CGI;
$template = new Text::Template (
TYPE => 'FILE',
SOURCE => $template_file,
) or die "Can't create template for $template_file: $Text::Template::ERROR";
# fill in new data if provided
%warning = ();
@messages = ();
if ( $cgi->param() ) {
# kludge - grep for inputbox("field") in template to find valid form fields
# (DON'T get them from form submission - that's insecure!)
open (TEMPLATE_FILE,"<$template_file")
or die "Can't open template for $template_file: $!";
my @form_fields =
map { /inputbox\s*\(\s*([\'\"])(.*)\1\s*\)/; $2 }
#grep { /inputbox\s*\(\s*([\'\"])(.*)\1\s*\)/ }
grep { /inputbox\s*\(\s*([\'\"])(.*)\1\s*\);?\s*\}/ }
<TEMPLATE_FILE>;
close TEMPLATE_FILE;
#changed fields
#foreach $_ ( @form_fields ) {
# warn "${_}_old undefined!" unless defined $cgi->param($_. '_old');
# warn "${_}_new undefined!" unless defined $cgi->param($_. '_new');
#}
my @diff_fields =
grep { $cgi->param($_. '_old') ne $cgi->param($_. '_new') } @form_fields;
if ( @diff_fields ) {
local $SIG{HUP} = 'IGNORE';
local $SIG{INT} = 'IGNORE';
local $SIG{QUIT} = 'IGNORE';
local $SIG{TERM} = 'IGNORE';
local $SIG{TSTP} = 'IGNORE';
local $SIG{PIPE} = 'IGNORE';
#open(LOCKFILE,">>$data_directory/.lock")
open(LOCKFILE,"+<$data_directory/.lock")
or open(LOCKFILE,">>$data_directory/.lock")
or die "Can't open $data_directory/.lock: $!";
flock(LOCKFILE,LOCK_EX); #blocks until we have the lock
seek(LOCKFILE, 0, 0);
print LOCKFILE "$$ \n"; #superfluous
get_data();
foreach my $field ( @diff_fields ) {
$shifthash{$field}='' unless defined $shifthash{$field};
if ( $shifthash{$field} eq $cgi->param($field. '_old') ) {
if ( $cgi->param($field. "_new") =~
/^\s*(\w[\w\s\.\'\-]{0,99}<?\s{0,9}(\w[\w\-\.\+]{0,99}\@(([\w\.\-]{1,99}\.){1,99}\w{1,99}))\s{0,9}>?)\s*$/
|| $cgi->param($field. "_new") =~ /^\s*()$/
) {
my $new = $1;
open(FILE,">$data_directory/.new.$field")
or die "Can't open file $data_directory/$field: $!";
print FILE $new;
close FILE;
rename "$data_directory/.new.$field", "$data_directory/$field";
$warning{$field} = '';
if (
$mail_smtpserver
&& $shifthash{$field} =~ /\b(\w[\w\-\.\+]*\@(([\w\.\-]+\.)+\w+))\b/
) {
my $to = $1;
my $header = Mail::Header->new( [
"From: $mail_from",
"To: $to",
"Cc: ". join(", ", @mail_cc),
"Sender: $mail_from",
"Reply-To: $mail_from",
"Date: ". time2str("%a, %d %b %Y %X %z", time),
"Subject: $mail_subject",
] );
my $msg = Mail::Internet->new(
'Header' => $header,
'Body' => [ map "$_\n",
"Hi,",
"",
"The \"$field\" shift you signed up for has been changed to",
'"'. $new. '"',
"",
split("\n", $mail_footer),
],
);
#send later - don't want to block on smtp while we have the lock
push @messages, $msg;
}
} else {
$warning{$field} =
"WARNING: you tried to sign up for <B>$field</B>, but your entry ".
"<B>\"". $cgi->param($field. '_new').
"</B>\" does not contain a valid email address."
;
}
} elsif ( $shifthash{$field} eq $cgi->param($field. '_new') ) {
#somebody else made the same change (or you hit reload); no need to warn
$warning{$field} = '';
} else {
$warning{$field} =
"WARNING: you tried to change <B>$field</B> from \"<B>".
$cgi->param($field. '_old').
"</B>\" to \"<B>".
$cgi->param($field. "_new").
"</B>\", but in the meantime someone changed it to: "
;
}
}
flock(LOCKFILE,LOCK_UN);
close LOCKFILE;
}
}
get_data();
my $text = $template->fill_in()
or die "Can't fill in template for $template_file: $Text::Template::ERROR";
print $cgi->header, $text;
$ENV{SMTPHOSTS} = $mail_smtpserver;
$ENV{MAILADDRESS} = $mail_from;
foreach my $msg ( @messages ) {
$msg->smtpsend;
}
# subroutines
sub get_data {
opendir DATA_DIR, $data_directory
or die "Can't open directory $data_directory: $!";
%shifthash = map {
open(FILE, "<$data_directory/$_")
or die "Can't open file $data_directory/$_: $!";
my $value = scalar(<FILE>) || '';
close FILE;
chomp $value;
( $_ => $value );
} grep { ! /^\.{1,2}(lock)?$/ } readdir(DATA_DIR);
closedir DATA_DIR;
}
# subroutines for the template
sub form {
$magic = defined $cgi->param('__MAGIC') ? $cgi->param('__MAGIC') : '';
$cgi->delete_all();
$cgi->start_form();
}
sub inputbox {
my $field = shift;
return encode_entities($shifthash{$field}) || " "
if $magic eq 'print';
$shifthash{$field}='' unless defined $shifthash{$field};
$warning{$field}='' unless defined $warning{$field};
#"$field ".
$cgi->hidden(
-name => $field. '_old',
-default => $shifthash{$field},
-force => 1,
).
$warning{$field}.
$cgi->textfield(
-name => $field. '_new',
-default => $shifthash{$field},
-force => 1,
-size => 15,
);
}
sub warnings {
join "<BR>", map {
"$warning{$_}<b>$shifthash{$_}</b>"
} grep {
$warning{$_}
} keys %warning;
}
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