use IO::Socket::SSL;
use MIME::Base64;
use Digest::SHA;
+use HTTP::Response;
use PVE::Tools;
use PVE::JSONSchema qw(get_standard_option);
use PVE::CLIHandler;
+use PVE::PTY;
use base qw(PVE::CLIHandler);
use PVE::APIClient::Config;
my $max_payload_size = 65536;
my $build_web_socket_request = sub {
- my ($path, $ticket, $termproxy) = @_;
+ my ($host, $path, $ticket, $termproxy) = @_;
my $key = '';
$key .= chr(int(rand(256))) for 1 .. 16;
my $request = "GET $path HTTP/1.1$CRLF"
. "Upgrade: WebSocket$CRLF"
. "Connection: Upgrade$CRLF"
+ . "Host: $host$CRLF"
. "Sec-WebSocket-Key: $enckey$CRLF"
. "Sec-WebSocket-Version: 13$CRLF"
. "Sec-WebSocket-Protocol: binary$CRLF"
return ($request, $enckey);
};
-# FIXME: share this code with websockt code in PVE/APIServer/AnyEvent.pm ?
my $create_websockt_frame = sub {
my ($payload) = @_;
return $string;
};
-# FIXME: share this code with websockt code in PVE/APIServer/AnyEvent.pm ?
my $parse_web_socket_frame = sub {
- my ($wsbuf_ref, $binary, $is_server) = @_;
+ my ($wsbuf_ref) = @_;
my $wsbuf = $$wsbuf_ref;
my $payload_len = unpack 'C', substr($wsbuf, 1, 1);
my $masked = $payload_len & 0b10000000;
- if ($is_server) {
- die "received unmasked websocket frame from client\n" if !$masked;
- } else {
- die "received masked websocket frame from server\n" if $masked;
- }
+ die "received masked websocket frame from server\n" if $masked;
my $offset = 2;
$payload_len = $payload_len & 0b01111111;
die "received too large websocket frame (len = $payload_len)\n"
if ($payload_len > $max_payload_size) || ($payload_len < 0);
- my @mask = (0, 0, 0, 0);
- if ($masked) {
- last if $len < $offset + 4;
-
- @mask = (unpack('C', substr($wsbuf, $offset+0, 1)),
- unpack('C', substr($wsbuf, $offset+1, 1)),
- unpack('C', substr($wsbuf, $offset+2, 1)),
- unpack('C', substr($wsbuf, $offset+3, 1)));
-
- $offset += 4;
- }
-
last if $len < ($offset + $payload_len);
my $data = substr($wsbuf, 0, $offset + $payload_len, ''); # now consume data
my $frame_data = substr($data, $offset, $payload_len);
- if ($masked) {
- for (my $i = 0; $i < $payload_len; $i++) {
- my $d = unpack('C', substr($frame_data, $i, 1));
- my $n = $d ^ $mask[$i % 4];
- substr($frame_data, $i, 1, pack('C', $n));
- }
- }
-
- $frame_data = decode_base64($frame_data) if !$binary;
-
$payload = '' if !defined($payload);
$payload .= $frame_data;
return ($payload, $req_close);
};
+my $client_exit = sub {
+ my ($select, $web_socket, $old_termios) = @_;
+
+ foreach my $fh ($select->handles) {
+ $select->remove($fh);
+
+ if ($fh == $web_socket) {
+ if ($fh->connected) {
+
+ # close connection
+ # Opcode, mask, statuscode
+ my $msg = "\x88" . pack('N', 0) . pack('n', 0);
+ $fh->syswrite($msg);
+ close($fh);
+ }
+ }
+
+ }
+
+ # switch back to blocking mode (else later shell commands will fail).
+ STDIN->blocking(0);
+
+ #
+ # Reset the terminal parameters.
+ #
+ print "\e[24H\r\n";
+ PVE::PTY::tcsetattr(*STDIN, $old_termios);
+};
+
__PACKAGE__->register_method ({
name => 'enter',
path => 'enter',
code => sub {
my ($param) = @_;
- my $conn = PVE::APIClient::Config::get_remote_connection($param->{remote});
+ my $config = PVE::APIClient::Config->load();
+ my $conn = PVE::APIClient::Config->remote_conn($config, $param->{remote});
# Get the real node from the resources endpoint
my $resource_list = $conn->get("api2/json/cluster/resources", { type => 'vm'});
# WebSocket Handshake
my ($request, $wskey) = $build_web_socket_request->(
- "/$api_path/vncwebsocket", $conn->{ticket}, $termproxy);
+ $conn->{host}, "/$api_path/vncwebsocket", $conn->{ticket}, $termproxy);
$web_socket->syswrite($request);
die "got invalid websocket reponse: $raw_response\n"
if !(($response->code == 101) &&
- ($response->header('connection') eq 'upgrade') &&
- ($response->header('upgrade') eq 'websocket') &&
+ (lc $response->header('connection') eq 'upgrade') &&
+ (lc $response->header('upgrade') eq 'websocket') &&
($response->header('sec-websocket-protocol') eq 'binary') &&
($response->header('sec-websocket-accept') eq $wsaccept));
my $frame = $create_websockt_frame->($termproxy->{user} . ":" . $termproxy->{ticket} . "\n");
$web_socket->syswrite($frame);
+ # Send resize command
+ my ($columns, $rows) = PVE::PTY::tcgetsize(*STDIN);
+ $frame = $create_websockt_frame->("1:$columns:$rows:");
+ $web_socket->syswrite($frame);
+
+ # Set STDIN to "raw -echo" mode
+ my $old_termios = PVE::PTY::tcgetattr(*STDIN);
+ my $raw_termios = {%$old_termios};
+ PVE::PTY::cfmakeraw($raw_termios);
+ PVE::PTY::tcsetattr(*STDIN, $raw_termios);
+
+ # And set it to non-blocking so we can every char with IO::Select.
+ STDIN->blocking(0);
+
my $select = IO::Select->new;
$web_socket->blocking(0);
$select->add($web_socket);
+ $select->add(fileno(STDIN));
+
+ my @messages;
+ my $ctrl_a_pressed_before = 0;
+ my $next_ping = time() + 3;
+
+ eval {
+ while (1) {
+ # Ping server every 3 seconds.
+ my $now = time();
+ if ($now >= $next_ping) {
+ push(@messages, $create_websockt_frame->("2"));
+ $next_ping = $now + 3;
+ }
+
+ # Write
+ foreach my $fh ($select->can_write(0.5)) {
+ if ($fh == $web_socket and my $msg = shift @messages) {
+ $fh->syswrite($msg, length($msg));
+ }
+ }
- while(my @ready = $select->can_read) {
- foreach my $fh (@ready) {
- if ($fh == $web_socket) {
- my $nr = $wb_socket_read_available_bytes->();
- my ($payload, $req_close) = $parse_web_socket_frame->(\$wsbuf, 1);
- print "GOT: $payload\n" if defined($payload);
- last if $req_close;
- last if !$nr; # eos
- } else {
- die "internal error - unknown handle";
+ # Read
+ foreach my $fh ($select->can_read(0.5)) {
+
+ # From Web Socket
+ if ($fh == $web_socket) {
+ # Read from WebSocket
+ my $nr = $wb_socket_read_available_bytes->();
+ my ($payload, $req_close) = $parse_web_socket_frame->(\$wsbuf);
+
+ if ($payload ne "OK") {
+ syswrite(\*STDOUT, $payload, length($payload));
+ }
+ }
+
+ # From STDIN
+ elsif ($fh == fileno(STDIN)) {
+
+ # Read from STDIN
+ my $nr = read(\*STDIN, my $buff, 4096);
+ if (!$nr) {
+ next;
+ }
+
+ my $char = ord($buff);
+
+ if ($ctrl_a_pressed_before == 1 && $char == hex("0x71")) {
+ $client_exit->($select, $web_socket, $old_termios);
+ return;
+ }
+
+ if ($char == hex("0x01")) {
+ if ($ctrl_a_pressed_before == 0) {
+ $ctrl_a_pressed_before = 1;
+ }
+ }
+ else {
+ $ctrl_a_pressed_before = 0;
+ }
+
+ push(@messages, $create_websockt_frame->("0:" . $nr . ":" . $buff));
+ }
}
}
- }
+ };
+ print "ERROR: " . $@ . ".\n" if $@;
+
+ $client_exit->($select, $web_socket, $old_termios);
+ return undef
}});
__PACKAGE__->register_method ({
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