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"
my $parse_web_socket_frame = sub {
my ($wsbuf_ref) = @_;
- my $wsbuf = $$wsbuf_ref;
-
my $payload;
my $req_close = 0;
- while (my $len = length($wsbuf)) {
+ while (my $len = length($$wsbuf_ref)) {
last if $len < 2;
- my $hdr = unpack('C', substr($wsbuf, 0, 1));
+ my $hdr = unpack('C', substr($$wsbuf_ref, 0, 1));
my $opcode = $hdr & 0b00001111;
my $fin = $hdr & 0b10000000;
my $rsv = $hdr & 0b01110000;
die "received websocket frame with RSV flags\n" if $rsv;
- my $payload_len = unpack 'C', substr($wsbuf, 1, 1);
+ my $payload_len = unpack 'C', substr($$wsbuf_ref, 1, 1);
my $masked = $payload_len & 0b10000000;
die "received masked websocket frame from server\n" if $masked;
$payload_len = $payload_len & 0b01111111;
if ($payload_len == 126) {
last if $len < 4;
- $payload_len = unpack('n', substr($wsbuf, $offset, 2));
+ $payload_len = unpack('n', substr($$wsbuf_ref, $offset, 2));
$offset += 2;
} elsif ($payload_len == 127) {
last if $len < 10;
- $payload_len = unpack('Q>', substr($wsbuf, $offset, 8));
+ $payload_len = unpack('Q>', substr($$wsbuf_ref, $offset, 8));
$offset += 8;
}
last if $len < ($offset + $payload_len);
- my $data = substr($wsbuf, 0, $offset + $payload_len, ''); # now consume data
+ my $data = substr($$wsbuf_ref, 0, $offset + $payload_len, ''); # now consume data
my $frame_data = substr($data, $offset, $payload_len);
return ($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(1);
+
+ #
+ # Reset the terminal parameters.
+ #
+ print "\e[24H\r\n";
+ PVE::PTY::tcsetattr(*STDIN, $old_termios);
+};
+
__PACKAGE__->register_method ({
name => 'enter',
path => 'enter',
# WebSocket Handshake
my ($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;
+ }
- 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);
- print "GOT: $payload\n" if defined($payload);
- last if $req_close;
- last if !$nr; # eos
- } else {
- die "internal error - unknown handle";
+ # Write
+ foreach my $fh ($select->can_write(0.5)) {
+ if ($fh == $web_socket and my $msg = shift @messages) {
+ $fh->syswrite($msg, length($msg));
+ }
+ }
+
+ # 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 ({