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#!/usr/bin/perl
# mono-xsp4 hosts file creator
#
# With this script the user can create a host file in one step, 
# these hosts file are installed in /etc/xsp4/conf.d/package and 
# then used in a 'big' host file (/etc/xsp4/mono-server4-hosts) 
# that will be used by XSP4
#
# Under GPL, please read: 
# http://www.gnu.org/copyleft/gpl.html
#
# Written by: Pablo Fischer

=head1 NAME

mono-xsp4-admin - mono-xsp4 hosts file creator
    
=head1 SYNOPSIS
    
mono-xsp4-admin [action] [args]

=head4 OPTIONS

  Actions:
    
    add        Use 'add' if you want to create an application and want mono-xsp4 scripts to manage it
    del        If you want to remove an application

  Args:

    --path     The path where you have your aspx files, MUST EXISTS!, required only with add action
    --app      The name of your application

=head1 DESCRIPTION

 mono-xsp4-admin is a perl tool to adminstrate your ASP.NET webapps that will be executed with 
 xsp4.

 When you try to add an application, mono-xsp4-admin will verify that your path exists, if it is, it will 
 add a directory inside /etc/xsp4/conf.d with the name of your app, and also as a file with the 
 filename format: 10_appname. This file will have the information (path, app).

 So, when mono-xsp4-update is executed it will read those dirs and create a debian.webapp in
 /etc/xsp4 that the xsp4 daemon will read.

=head1 AUTHOR

 Pablo Fischer <pablo@pablo.com.mx>

=cut 

use strict;

my (%OPT);

my $confd_directory = "/etc/xsp4/conf.d";

#Read the opts
foreach my $opt (@ARGV) {
    if($opt =~ /^add/) {
	$OPT{'action'} = "add";
    }
    
    elsif($opt =~ /^del/) {
	$OPT{'action'} = "del";
    }	

    elsif($opt =~ /--path/) {
	$OPT{'path'} = $opt;
    }    

    elsif($opt =~ /--app/) {
	$OPT{'app'} = $opt;
    }   
}


#clean strange chars, like ':', commas, etc.. I don't like those chars
sub clean_opts() {
    foreach my $key (keys %OPT) {	
	next unless $key ne "action";
	my $value = $OPT{$key};
	$OPT{$key} = (split("=", $OPT{$key}))[1];
	if($key ne "path") {
	    $OPT{$key} =~ s|/*||;
	}
	$OPT{$key} =~ s{/$}{}; 
			$OPT{$key} =~ s|:*||;
		    }
    }

#We have the path, app, name and the action?
    sub verify_neededopts() {
	if($OPT{'action'} ne "add" && $OPT{'action'} ne "del") {
	    &help;
	    exit;
	}

	if(!$OPT{'path'}) {
	    print "I need the path of your asp.net application\n";
	    exit;
	}

	if(!$OPT{'app'}) {
	    print "You should declare the application name!\n";
	    exit;
	}
    }

#Add the Host file and directory    
    sub add_host() {
	if( ! -d $OPT{'path'} ) {
	    print "$OPT{'path'} does not exists!\n";
	    exit;
	}
	#But what if the conf.d package directory already exists?
	if ( -d "$confd_directory/$OPT{'app'}") {
	    print "Sorry but $confd_directory/$OPT{'app'} already exist, you might change your application name\n";
	    exit;
	}
	
	#Ok, create the conf.d package directory
	system("mkdir $confd_directory/$OPT{'app'}");
	#And create the file
	system("touch $confd_directory/$OPT{'app'}/10_$OPT{'app'}");
	
	open(PACKAGEFILE, "> $confd_directory/$OPT{'app'}/10_$OPT{'app'}");
	print PACKAGEFILE "This is the configuration file \n";
	print PACKAGEFILE "for the $OPT{'app'} virtualhost\n";
	print PACKAGEFILE "path = $OPT{'path'}\n";
	print PACKAGEFILE "alias = /$OPT{'app'}\n";
	close(PACKAGEFILE);
	
	system("/usr/sbin/mono-xsp4-update");
	print "done!\n";
    }

#Remove the host directory
    sub del_host() {
	
	system("rm -Rf $confd_directory/$OPT{'app'}");
	system("/usr/sbin/mono-xsp4-update");
	
	print "done!\n";
    }
    
    sub help() {
	print "This script let the user to create a application host file in one step \n";
	print "for XSP4 (/etc/xsp4/conf.d/application\n\n";
	print "Use:\n";
	print " mono-xsp4-admin [action] --path=/real/path --app=/applicationame\n\n";
	print "Where:\n";
	print " action:\n";
	print " add                   Creates an application\n";
	print " del                   Delete an application (the directory /etc/mono-server/conf.d/application\n";
	print " --path=/real/path     A real and true path where you have your ASP.NET applicatio running\n";
	print " --app=/application    The name of the application\n";
    }

    &clean_opts;
    &verify_neededopts;

    if($OPT{'action'} eq"add") {
	&add_host;
    }
    elsif($OPT{'action'} eq "del") {
	&del_host;
    }