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|
package XXV::MODULES::TELNET;
use strict;
use XXV::OUTPUT::Console;
use Tools;
# This module method must exist for XXV
# ------------------
sub module {
# ------------------
my $obj = shift || return error('No object defined!');
my $args = {
Name => 'TELNET',
Prereq => {
'IO::Socket::INET' => 'Object interface for AF_INET domain sockets ',
},
Description => gettext('This module is a multisession telnet server.'),
Preferences => {
active => {
description => gettext('Activate this service'),
default => 'n',
type => 'confirm',
required => gettext('This is required!'),
},
Clients => {
description => gettext('Maximum number of simultaneous connections'),
default => 5,
type => 'integer',
required => gettext('This is required!'),
},
Port => {
description => gettext('Number of port to listen for telnet clients'),
default => 8081,
type => 'integer',
required => gettext('This is required!'),
},
Interface => {
description => gettext('Local interface to bind service'),
default => '0.0.0.0',
type => 'host',
required => gettext('This is required!'),
},
},
Commands => {
bye => {
description => gettext("This will exit the xxv system."),
short => 'x',
callback => sub{
my ($console, $config) = @_;
my $answer;
my $questions = [
'really' => {
typ => 'confirm',
msg => gettext("Are you sure to exit the xxv system?"),
def => 'n'}
];
$answer = $console->question(gettext("This will exit the xxv system."),$questions,$answer);
if($answer->{really} eq 'y') {
lg "Closed session and exit.\n";
main::quit;
}
},
Level => 'admin'
},
},
};
return $args;
}
# ------------------
sub new {
# ------------------
my($class, %attr) = @_;
my $self = {};
bless($self, $class);
$self->{charset} = delete $attr{'-charset'};
if($self->{charset} eq 'UTF-8'){
eval 'use utf8';
}
# paths
$self->{paths} = delete $attr{'-paths'};
# who am I
$self->{MOD} = $self->module;
# all configvalues to $self without parents (important for ConfigModule)
map {
$self->{$_} = $attr{'-config'}->{$self->{MOD}->{Name}}->{$_};
$self->{$_} = $self->{MOD}->{Preferences}->{$_}->{default} unless($self->{$_});
} keys %{$self->{MOD}->{Preferences}};
# Try to use the Requirments
map {
eval "use $_";
if($@) {
my $m = (split(/ /, $_))[0];
return panic("\nCouldn't load perl module: $m\nPlease install this module on your system:\nperl -MCPAN -e 'install $m'");
}
} keys %{$self->{MOD}->{Prereq}};
# read the DB Handle
$self->{dbh} = delete $attr{'-dbh'};
# The Initprocess
$self->init or return error('Problem to initialize modul!');
return $self;
}
# ------------------
sub init {
# ------------------
my $obj = shift || return error('No object defined!');
# globals
my $channels;
my $prompt = "XXV> ";
# make socket
my $socket = IO::Socket::INET->new(
Listen => $obj->{Clients},
LocalPort => $obj->{Port},
LocalAddr => $obj->{Interface},
Reuse => 1
) or return error("Couldn't create socket: $!");
# install an initial watcher
Event->io(
fd => $socket,
prio => -1, # -1 very hard ... 6 very low
cb => sub {
my $watch = shift;
# make "channel" number
my $channel=++$channels;
# accept client
my $client=$socket->accept;
panic "Couldn't connect to new telnet client." and return unless $client;
$client->autoflush;
my $console = XXV::OUTPUT::Console->new(
-handle => $client,
-dbh => $obj->{dbh},
-paths => $obj->{paths},
);
# install a communicator
Event->io(
fd => $client,
prio => -1, # -1 very hard ... 6 very low
cb => sub {
my $watcher = shift;
# read new line and report it
my $handle=$watcher->w->fd;
my $line=<$handle>;
if(!$line or (defined $obj->{LOGOUT} && $obj->{LOGOUT} == 1 )) {
undef $obj->{LOGOUT};
$watcher->w->cancel;
$handle->close();
undef $watcher;
return 1;
}
$line =~ s/[\r|\n]//sig
if(defined $line);
$obj->handleInput($console, $line);
if(defined $obj->{LOGOUT} && $obj->{LOGOUT} == 1) {
undef $obj->{LOGOUT};
$watcher->w->cancel;
$handle->close();
undef $watcher;
return 1;
}
# Prompt
$client->print($prompt) if($client->opened);
},
);
# welcome
$client->print(sprintf(gettext("Welcome to xxv system version: %s.\r\nThis is session %s.\r\n"),main::getVersion(),$channel));
my $userMod = main::getModule('USER');
unless(exists $console->{USER} or $userMod->{active} ne 'y') {
# Login
my $data;
if($userMod->_checkIp($client)) {
$console->message(gettext("Welcome to xxv system."));
$data->{Name} = 'no';
$data->{Password} = 'no';
} else {
$data = $console->login(gettext("Welcome to xxv system. Please Login:"));
}
my $user = $userMod->check($client, $data->{Name}, $data->{Password});
if(exists $user->{Name}) {
$console->{USER} = $user;
} else {
$console->err(gettext("Sorry, but permission denied!"));
$client->close;
return 1;
}
}
$client->print($prompt);
},
) if($obj->{active} eq 'y');
return 1;
}
# ------------------
sub handleInput {
# ------------------
my $obj = shift || return error('No object defined!');
my $console = shift || return error('No console defined!');
my $line = shift || return;
my $user = shift || $console->{USER};
my ($ucmd, $udata) = ($1, $2) if($line =~ /(\S+)\s*(.*)/sig);
# Test the command on exists, permissions and so on
my $u = main::getModule('USER');
my ($cmdobj, $cmdname, $shorterr, $err) = $u->checkCommand($console, $ucmd);
$console->{call} = $cmdname;
if($cmdobj and not $shorterr) {
$cmdobj->{callback}($console, $udata);
} elsif($shorterr eq 'noperm' or $shorterr eq 'noactive') {
return $console->err($err);
} else {
return $obj->usage($console, undef, $err);
}
}
# ------------------
sub usage {
# ------------------
my $obj = shift || return error('No object defined!');
return main::getModule('CONFIG')->usage(@_);
}
1;
|
