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#!/usr/bin/perl -T
=head1 NAME
collect-reminders - collect email reminders to be sent out
=head1 SYNOPSIS
Collect emails reminders set by users for special occasions and move
them to the email-reminder spool directory.
=head1 DESCRIPTION
Email-reminder allows users to define events that they want to be
reminded of by email.
This script is meant to be invoked everyday by a cron job or as the
root user. It collects the reminder files from each user.
=head1 OPTIONS
=over 6
=item B<--help>
Displays basic usage message.
=item B<--verbose>
Prints out information about what the program is doing, including the
full emails being sent out.
=item B<--version>
Displays the version number.
=back
=head1 FILES
F<~/.email-reminders>, F</etc/email-reminder.conf>
=head1 AUTHOR
Francois Marier <francois@email-reminder.org.nz>
=head1 SEE ALSO
email-reminder-editor, send-reminders
=head1 COPYRIGHT
Copyright (C) 2004-2010 by Francois Marier
Email-Reminder 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 3 of the
License, or (at your option) any later version.
Email-Reminder 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 Email-Reminder; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301, USA.
=cut
use strict;
use warnings;
use File::Copy;
use Getopt::Long;
use Pod::Usage;
use EmailReminder::Utils;
# Command-line parameters
my $verbose = 0;
my $simulate = 0;
my $version = 0;
my $help = 0;
GetOptions( "verbose" => \$verbose,
"version" => \$version,
"help" => \$help,
);
sub copy_reminders
{
my $uid = shift;
my $homedir = shift;
my $file = "$homedir/" . $EmailReminder::Utils::USER_CONFIG_FILE;
if (-e $file) {
my $destination = $EmailReminder::Utils::SPOOL_DIRECTORY . '/' . $uid;
print "==> Copying $file to $destination\n" if $verbose;
# Delete existing file for the user if necessary
if (-e $destination) {
if (unlink($destination)) {
print "A file for uid $uid was already present and has been removed.\n" if $verbose;
} else {
die "Could not remove $destination\n";
}
}
# Copy the file to the spool directory
unless (copy($file, $destination)) {
die "Could not copy $file\n";
}
return 1;
}
else {
print "No reminders in '$homedir'.\n" if $verbose;
}
return 0;
}
sub main
{
my $running_uid = $>;
if ($running_uid != 0) {
die "This script must be run as root\n";
}
# Iterate through all local users
while (my (undef, undef, $uid, undef, undef, undef, undef,
$homedir, $shell, undef) = getpwent) {
# Untaint uid
if ($uid =~ /^([0-9]+)$/i) {
$uid = $1;
} else {
die "Error: got a non-numeric uid\n";
}
# Try to skip non-human users
if (($uid < 1000) || ($uid >= 60000) || ($shell eq '/bin/false')) {
print "Skipped non-human uid $uid\n" if $verbose;
next;
}
# Untaint homedir
if ($homedir =~ /^([A-Za-z0-9_\-\/.]+)$/) {
$homedir = $1;
} else {
die "Error: home directory for uid $uid contains invalid characters\n";
}
copy_reminders($uid, $homedir);
}
return 1;
}
if ($help || $version) {
print "collect-reminders $EmailReminder::Utils::VERSION\n";
if ($help) {
print "\n";
pod2usage(1);
} else {
exit(1);
}
} else {
main();
}
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