#!/usr/bin/perl
# BEGIN BPS TAGGED BLOCK {{{
#
# COPYRIGHT:
#
# This software is Copyright (c) 1996-2011 Best Practical Solutions, LLC
#                                          <sales@bestpractical.com>
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# (Except where explicitly superseded by other copyright notices)
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# LICENSE:
#
# This work is made available to you under the terms of Version 2 of
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# General Public License for more details.
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# along with this program; if not, write to the Free Software
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# 02110-1301 or visit their web page on the internet at
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# CONTRIBUTION SUBMISSION POLICY:
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use strict;
local $ENV{'PATH'}   = '/bin:/usr/bin:/usr/local/bin';                   # or whatever you need
local $ENV{'CDPATH'} = '' if defined $ENV{'CDPATH'};
local $ENV{'SHELL'}  = '/bin/sh' if defined $ENV{'SHELL'};
local $ENV{'ENV'}    = '' if defined $ENV{'ENV'};
local $ENV{'IFS'}    = '' if defined $ENV{'IFS'};

package HTML::Mason::Commands;
our %session;

package RT::Mason;

our ($Nobody, $SystemUser, $Handler, $r);

my $protect_fds;

sub handler {
    ($r) = @_;

    if ( !$protect_fds && $ENV{'MOD_PERL'} && exists $ENV{'MOD_PERL_API_VERSION'}
        && $ENV{'MOD_PERL_API_VERSION'} >= 2
    ) {
        # under mod_perl2, STDIN and STDOUT get closed and re-opened,
        # however they are not on FD 0 and 1.  In this case, the next
        # socket that gets opened will occupy one of these FDs, and make
        # all system() and open "|-" calls dangerous; for example, the
        # DBI handle can get this FD, which later system() calls will
        # close by putting garbage into the socket.
        $protect_fds = [];
        push @{$protect_fds}, IO::Handle->new_from_fd(0, "r")
            if fileno(STDIN) != 0;
        push @{$protect_fds}, IO::Handle->new_from_fd(1, "w")
            if fileno(STDOUT) != 1;
    }

    local $SIG{__WARN__};
    local $SIG{__DIE__};
    RT::InitSignalHandlers();

    if ($r->content_type =~ m/^httpd\b.*\bdirectory/i) {
        use File::Spec::Unix;
        # Our DirectoryIndex is always index.html, regardless of httpd settings
        $r->filename( File::Spec::Unix->catfile( $r->filename, 'index.html' ) );
    }

    Module::Refresh->refresh if RT->Config->Get('DevelMode');

    RT::ConnectToDatabase();

    # none of the methods in $r gives us the information we want (most
    # canonicalize /foo/../bar to /bar which is exactly what we want to avoid)
    my (undef, $requested) = split ' ', $r->the_request, 3;
    my $uri = URI->new("http://".$r->hostname.$requested);
    my $path = URI::Escape::uri_unescape($uri->path);

    ## Each environment has its own way of handling .. and so on in paths,
    ## so RT consistently forbids such paths.
    if ( $path =~ m{/\.} ) {
        $RT::Logger->crit("Invalid request for ".$path." aborting");
        RT::Interface::Web::Handler->CleanupRequest();
        return 400;
    }

    my (%session, $status);
    {
        local $@;
        $status = eval { $Handler->handle_request($r) };
        $RT::Logger->crit( $@ ) if $@;
    }
    undef %session;

    RT::Interface::Web::Handler->CleanupRequest();

    return $status;
}

package main;

# check mod_perl version if it's mod_perl
BEGIN {
    die "RT does not support mod_perl 1.99. Please upgrade to mod_perl 2.0"
        if $ENV{'MOD_PERL'}
        and $ENV{'MOD_PERL'} =~ m{mod_perl/(?:1\.9)};
}

require CGI;
CGI->import(qw(-private_tempfiles));

# fix lib paths, some may be relative
BEGIN {
    require File::Spec;
    my @libs = ("/usr/local/lib/perl5/site_perl/5.14.2", "/usr/local/share/rt38/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;
    }

}

require RT;
die "Wrong version of RT $RT::Version found; need 3.8.*"
    unless $RT::VERSION =~ /^3\.8\./;
RT::LoadConfig();
if ( RT->Config->Get('DevelMode') ) {
    require Module::Refresh;
}
RT::Init();

# check compatibility of the DB
{
    my $dbh = $RT::Handle->dbh;
    if ( $dbh ) {
        my ($status, $msg) = $RT::Handle->CheckCompatibility( $dbh, 'post' );
        die $msg unless $status;
    }
}

require RT::Interface::Web::Handler;
$RT::Mason::Handler = RT::Interface::Web::Handler->new(
    RT->Config->Get('MasonParameters')
);

# load more for mod_perl before forking
RT::InitClasses( Heavy => 1 ) if $ENV{'MOD_PERL'} || $ENV{RT_WEBMUX_HEAVY_LOAD};

# we must disconnect DB before fork
$RT::Handle->dbh(undef);
undef $RT::Handle;

if ( $ENV{'MOD_PERL'} && !RT->Config->Get('DevelMode')) {
    # Under static_source, we need to purge the component cache
    # each time we restart, so newer components may be reloaded.
    #
    # We can't do this in FastCGI or we'll blow away the component
    # root _every_ time a new server starts which happens every few
    # hits.
    
    require File::Path;
    require File::Glob;
    my @files = File::Glob::bsd_glob("$RT::MasonDataDir/obj/*");
    File::Path::rmtree([ @files ], 0, 1) if @files;
}

1;
