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#!/usr/bin/perl -w
# BEGIN BPS TAGGED BLOCK {{{
# 
# COPYRIGHT:
# 
# This software is Copyright (c) 1996-2009 Best Practical Solutions, LLC
#                                          <jesse@bestpractical.com>
# 
# (Except where explicitly superseded by other copyright notices)
# 
# 
# LICENSE:
# 
# This work is made available to you under the terms of Version 2 of
# the GNU General Public License. A copy of that license should have
# been provided with this software, but in any event can be snarfed
# from www.gnu.org.
# 
# This work 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 or visit their web page on the internet at
# http://www.gnu.org/licenses/old-licenses/gpl-2.0.html.
# 
# 
# CONTRIBUTION SUBMISSION POLICY:
# 
# (The following paragraph is not intended to limit the rights granted
# to you to modify and distribute this software under the terms of
# the GNU General Public License and is only of importance to you if
# you choose to contribute your changes and enhancements to the
# community by submitting them to Best Practical Solutions, LLC.)
# 
# By intentionally submitting any modifications, corrections or
# derivatives to this work, or any other work intended for use with
# Request Tracker, to Best Practical Solutions, LLC, you confirm that
# you are the copyright holder for those contributions and you grant
# Best Practical Solutions,  LLC a nonexclusive, worldwide, irrevocable,
# royalty-free, perpetual, license to use, copy, create derivative
# works based on those contributions, and sublicense and distribute
# those contributions and any derivatives thereof.
# 
# END BPS TAGGED BLOCK }}}
use warnings;
use strict;

# fix lib paths, some may be relative
BEGIN {
    require File::Spec;
    my @libs = ("lib", "local/lib");
    my $bin_path;

    for my $lib (@libs) {
        unless ( File::Spec->file_name_is_absolute($lib) ) {
            unless ($bin_path) {
                if ( File::Spec->file_name_is_absolute(__FILE__) ) {
                    $bin_path = ( File::Spec->splitpath(__FILE__) )[1];
                }
                else {
                    require FindBin;
                    no warnings "once";
                    $bin_path = $FindBin::Bin;
                }
            }
            $lib = File::Spec->catfile( $bin_path, File::Spec->updir, $lib );
        }
        unshift @INC, $lib;
    }

}

use RT;
RT::LoadConfig();
RT->InitLogging();
if (RT->Config->Get('DevelMode')) { require Module::Refresh; }

RT::CheckPerlRequirements();
RT->InitPluginPaths();

my $explicit_port = shift @ARGV;
my $port = $explicit_port || RT->Config->Get('WebPort') || '8080';


require RT::Handle;
my ($integrity, $state, $msg) = RT::Handle->CheckIntegrity;

unless ( $integrity ) {
    print STDERR <<EOF;
    
RT couldn't connect to the database where tickets are stored.
If this is a new installation of RT, you should visit the URL below
to configure RT and initialize your database.

If this is an existing RT installation, this may indicate a database
connectivity problem.

The error RT got back when trying to connect to your database was:

$msg

EOF

    require RT::Installer;
    # don't enter install mode if the file exists but is unwritable
    if (-e RT::Installer->ConfigFile && !-w _) {
        die 'Since your configuration exists ('
          . RT::Installer->ConfigFile
          . ") but is not writable, I'm refusing to do anything.\n";
    }

    RT->Config->Set( 'LexiconLanguages' => '*' );
    RT::I18N->Init;

    RT->InstallMode(1);
} else {
    RT->ConnectToDatabase();
    RT->InitSystemObjects();
    RT->InitClasses( Heavy => 1 );
    RT->InitPlugins();
    RT->Config->PostLoadCheck();

    my ($status, $msg) = RT::Handle->CheckCompatibility(
        $RT::Handle->dbh, 'post'
    );
    unless ( $status ) {
        print STDERR $msg, "\n\n";
        exit -1;
    }
}

require RT::Interface::Web::Standalone;
my $server = RT::Interface::Web::Standalone->new;
run_server($port);
exit 0;

sub run_server {
    my $port = shift;
    $server->port($port);
    eval { $server->run() };

    if ( my $err = $@ ) {
        handle_startup_error($err);
    }
}

sub handle_startup_error {
    my $err = shift;
    if ( $err =~ /bind: Permission denied/ ) {
        handle_bind_error();
    } else {
        die
            "Something went wrong while trying to run RT's standalone web server:\n\t"
            . $err;
    }
}


sub handle_bind_error {

    print STDERR <<EOF;
WARNING: RT couldn't start up a web server on port @{[$port]}.
This is often the case if you're running @{[$0]} as 
someone other than your system's "root" user.  
EOF

    if ($explicit_port) {
        print STDERR
            "Please check your system configuration or choose another port\n\n";
    } else {
        print STDERR "\nFor now, RT has chosen an alternate port to run on.\n\n";
        if ( !$integrity ) {
            print STDERR <<EOF;
You can use this server to configure and explore RT.  While configuring
RT, you'll have a chance to set a permanent port and URL for your
server.

EOF
        }
        run_server( 8000 + int( rand(1024) ) );
    }
}