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package Net::XMPP2::SimpleConnection; |
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use IO::Socket::INET; |
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use Errno; |
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use Fcntl; |
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use Encode; |
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use Net::SSLeay; |
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use IO::Handle; |
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|
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BEGIN { |
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Net::SSLeay::load_error_strings (); |
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Net::SSLeay::SSLeay_add_ssl_algorithms (); |
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Net::SSLeay::randomize (); |
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} |
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|
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=head1 NAME |
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|
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Net::XMPP2::SimpleConnection - A low level TCP/TLS connection |
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|
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=head1 SYNOPSIS |
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|
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package foo; |
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use Net::XMPP2::SimpleConnection; |
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|
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our @ISA = qw/Net::XMPP2::SimpleConnection/; |
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|
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=head1 DESCRIPTION |
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|
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This module only implements the basic low level socket and SSL handling stuff. |
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It is used by L<Net::XMPP2::Connection>. |
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|
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=cut |
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|
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sub new { |
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my $this = shift; |
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my $class = ref($this) || $this; |
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my $self = { disconnect_cb => sub {}, @_ }; |
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bless $self, $class; |
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return $self; |
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} |
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|
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sub set_block { |
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my ($self) = @_; |
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my $flags = 0; |
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fcntl($self->{socket}, F_GETFL, $flags) |
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or die "Couldn't get flags for HANDLE : $!\n"; |
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$flags &= ~O_NONBLOCK; |
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fcntl($self->{socket}, F_SETFL, $flags) |
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or die "Couldn't set flags for HANDLE: $!\n"; |
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} |
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|
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sub set_noblock { |
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my ($self) = @_; |
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my $flags = 0; |
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fcntl($self->{socket}, F_GETFL, $flags) |
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or die "Couldn't get flags for HANDLE : $!\n"; |
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$flags |= O_NONBLOCK; |
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fcntl($self->{socket}, F_SETFL, $flags) |
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or die "Couldn't set flags for HANDLE: $!\n"; |
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} |
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|
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sub connect { |
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my ($self, $host, $port) = @_; |
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|
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$self->{socket} |
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and return 1; |
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|
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my $sock = IO::Socket::INET->new ( |
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PeerAddr => $host, |
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PeerPort => $port, |
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Proto => 'tcp', |
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Blocking => 1 |
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); |
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return undef unless $sock;; |
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|
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$self->{socket} = $sock; |
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$self->{host} = $host; |
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$self->{port} = $port; |
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|
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$self->set_noblock; |
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|
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binmode $sock, ":raw"; |
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|
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$self->{r} = |
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AnyEvent->io (poll => 'r', fh => $sock, cb => sub { |
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my $l = sysread $sock, my $data, 1024; |
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|
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if ($l) { |
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$self->{read_buffer} .= decode_utf8 $data; |
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$self->handle_data (\$self->{read_buffer}); |
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|
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} else { |
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return if $! == Errno::EAGAIN; |
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if (defined $l) { |
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$self->disconnect ("EOF from server '$self->{host}:$self->{port}'"); |
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return; |
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|
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} else { |
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$self->disconnect ("Error while reading from server '$self->{host}:$port': $!"); |
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return; |
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} |
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} |
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}); |
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return 1; |
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} |
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|
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sub end_sockets { |
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my ($self) = @_; |
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delete $self->{r}; |
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delete $self->{w}; |
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if (delete $self->{ssl_enabled}) { |
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Net::SSLeay::free ($self->{ssl}); |
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delete $self->{ssl}; |
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Net::SSLeay::CTX_free ($self->{ctx}); |
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delete $self->{ctx}; |
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} |
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close ($self->{socket}); |
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delete $self->{socket}; |
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} |
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|
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sub try_ssl_write { |
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my ($self) = @_; |
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|
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my $l = Net::SSLeay::write ($self->{ssl}, $self->{write_buffer}); |
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|
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if ($l <= 0) { |
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if ($l == 0) { |
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$self->disconnect ("unexpected EOF from server (ssl) '$self->{host}:$self->{port}'"); |
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return; |
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|
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} else { |
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my $err2 = Net::SSLeay::get_error $self->{ssl}, $l; |
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if ($err2 == 2 || $err2 == 3) { |
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delete $self->{w}; |
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$self->make_ssl_write_watcher ($err2 == 2 ? 'r' : 'w'); |
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return; |
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} |
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|
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if ($! != Errno::EAGAIN |
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or my $err = Net::SSLeay::ERR_get_error) { |
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|
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$self->disconnect ( |
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sprintf ( |
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"Error while writing from server '$self->{host}:$self->{port}': (%d|%s|%s)", |
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$err2, (Net::SSLeay::ERR_error_string $err), "$!") |
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); |
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return; |
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} |
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} |
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} else { |
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$self->debug_wrote_data (substr $self->{write_buffer}, 0, $l); |
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$self->{write_buffer} = substr $self->{write_buffer}, $l; |
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if (length ($self->{write_buffer}) <= 0) { |
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delete $self->{w}; |
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} |
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} |
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} |
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|
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sub try_ssl_read { |
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my ($self) = @_; |
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my $r = Net::SSLeay::read ($self->{ssl}); |
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|
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if (defined $r) { |
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$self->{read_buffer} .= decode_utf8 ($r); |
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$self->handle_data (\$self->{read_buffer}); |
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} else { |
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my $err2 = Net::SSLeay::get_error $self->{ssl}, $l; |
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if ($err2 == 2 || $err2 == 3) { |
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warn "READ RETRY $err2\n"; |
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delete $self->{r}; |
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$self->make_ssl_read_watcher ($err2 == 2 ? 'r' : 'w'); |
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return; |
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} |
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|
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if ($! != Errno::EAGAIN |
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or my $err = Net::SSLeay::ERR_get_error) { |
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|
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$self->disconnect ( |
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sprintf ( |
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"Error while reading from server '$self->{host}:$self->{port}':" |
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."(%d|%s|%s)", |
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$err2, (Net::SSLeay::ERR_error_string $err), "$!") |
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); |
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return; |
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} |
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} |
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} |
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|
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sub write_data { |
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my ($self, $data) = @_; |
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#return unless $self->{r}; |
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|
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my $cl = $self->{socket}; |
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$self->{write_buffer} .= encode_utf8 ($data); |
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|
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unless ($self->{w}) { |
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$self->{w} = |
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AnyEvent->io (poll => 'w', fh => $cl, cb => sub { |
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if (not $self->{ssl_enabled}) { |
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if (my $data = $self->{write_buffer}) { |
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my $len = syswrite $cl, $data; |
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unless ($len) { |
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return if $! == Errno::EAGAIN; |
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if (not defined $len) { |
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warn "error when writing data on $self->{host}:$self->{port}: $!"; |
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return; |
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} else { |
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delete $self->{w}; |
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} |
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} |
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|
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if ($len == length $self->{write_buffer}) { |
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delete $self->{w}; |
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} |
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|
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$self->debug_wrote_data (substr $self->{write_buffer}, 0, $len); |
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$self->{write_buffer} = substr $self->{write_buffer}, $len; |
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} |
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} else { |
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$self->try_ssl_write; |
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} |
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}); |
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} |
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} |
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|
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sub make_ssl_read_watcher { |
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my ($self, $poll) = @_; |
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return if $self->{r}; |
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|
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$poll ||= 'r'; |
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$self->{r} = |
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AnyEvent->io (poll => $poll, fh => $self->{socket}, cb => sub { |
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$self->try_ssl_read; |
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}); |
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} |
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|
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sub make_ssl_write_watcher { |
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my ($self, $poll) = @_; |
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return if $self->{w}; |
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|
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$poll ||= 'w'; |
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$self->{w} = |
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AnyEvent->io (poll => $poll, fh => $self->{socket}, cb => sub { |
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$self->try_ssl_write; |
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}); |
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} |
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|
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sub enable_ssl { |
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my ($self) = @_; |
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|
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$Net::SSLeay::ssl_version = 10; # Insist on TLSv1 |
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|
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$self->{ssl_enabled} = 1; |
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|
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#d# warn "START TLS!\n"; |
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|
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$self->{r} = undef; |
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$self->{w} = undef; |
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|
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$self->{ctx} = Net::SSLeay::CTX_new (); |
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|
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# enable SSL_MODE_ENABLE_PARTIAL_WRITE and SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER |
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Net::SSLeay::CTX_set_mode($self->{ctx}, 1 | 2); |
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|
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$self->{ssl} = Net::SSLeay::new ($self->{ctx}); |
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|
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Net::SSLeay::set_fd ($self->{ssl}, fileno $self->{socket}); |
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#d# warn "CONNECT\n"; |
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Net::SSLeay::connect $self->{ssl}; |
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#d# warn "CONNECT END\n"; |
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binmode $self->{socket}, ":bytes"; |
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|
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$self->{ssl_read_data} = ""; |
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$self->make_ssl_read_watcher; |
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} |
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|
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sub disconnect { |
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my ($self, $msg) = @_; |
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$self->end_sockets; |
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$self->{disconnect_cb}->($self->{host}, $self->{port}, $msg); |
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} |
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|
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1; |
