use strict;
use warnings;
use JSON;
+use URI::Escape;
+use IO::Select;
+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 $CRLF = "\x0D\x0A";
+my $max_payload_size = 65536;
+
+my $build_web_socket_request = sub {
+ my ($host, $path, $ticket, $termproxy) = @_;
+
+ my $key = '';
+ $key .= chr(int(rand(256))) for 1 .. 16;
+ my $enckey = MIME::Base64::encode_base64($key, '');
+
+ my $encticket = uri_escape($ticket);
+ my $cookie = "PVEAuthCookie=$encticket; path=/; secure;";
+
+ $path .= "?port=$termproxy->{port}" .
+ "&vncticket=" . uri_escape($termproxy->{ticket});
+
+ 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"
+ . "Cookie: $cookie$CRLF"
+ . "$CRLF";
+
+ return ($request, $enckey);
+};
+
+my $create_websockt_frame = sub {
+ my ($payload) = @_;
+
+ my $string = "\x82"; # binary frame
+ my $payload_len = length($payload);
+ if ($payload_len <= 125) {
+ $string .= pack 'C', $payload_len | 128;
+ } elsif ($payload_len <= 0xffff) {
+ $string .= pack 'C', 126 | 128;
+ $string .= pack 'n', $payload_len;
+ } else {
+ $string .= pack 'C', 127 | 128;
+ $string .= pack 'Q>', $payload_len;
+ }
+
+ $string .= pack 'N', 0; # we simply use 0 as mask
+ $string .= $payload;
+
+ return $string;
+};
+
+my $parse_web_socket_frame = sub {
+ my ($wsbuf_ref) = @_;
+
+ my $payload;
+ my $req_close = 0;
+
+ while (my $len = length($$wsbuf_ref)) {
+ last if $len < 2;
+
+ my $hdr = unpack('C', substr($$wsbuf_ref, 0, 1));
+ my $opcode = $hdr & 0b00001111;
+ my $fin = $hdr & 0b10000000;
+
+ die "received fragmented websocket frame\n" if !$fin;
+
+ my $rsv = $hdr & 0b01110000;
+ die "received websocket frame with RSV flags\n" if $rsv;
+
+ my $payload_len = unpack 'C', substr($$wsbuf_ref, 1, 1);
+
+ my $masked = $payload_len & 0b10000000;
+ die "received masked websocket frame from server\n" if $masked;
+
+ my $offset = 2;
+ $payload_len = $payload_len & 0b01111111;
+ if ($payload_len == 126) {
+ last if $len < 4;
+ $payload_len = unpack('n', substr($$wsbuf_ref, $offset, 2));
+ $offset += 2;
+ } elsif ($payload_len == 127) {
+ last if $len < 10;
+ $payload_len = unpack('Q>', substr($$wsbuf_ref, $offset, 8));
+ $offset += 8;
+ }
+
+ die "received too large websocket frame (len = $payload_len)\n"
+ if ($payload_len > $max_payload_size) || ($payload_len < 0);
+
+ last if $len < ($offset + $payload_len);
+
+ my $data = substr($$wsbuf_ref, 0, $offset + $payload_len, ''); # now consume data
+
+ my $frame_data = substr($data, $offset, $payload_len);
+
+ $payload = '' if !defined($payload);
+ $payload .= $frame_data;
+
+ if ($opcode == 1 || $opcode == 2) {
+ # continue
+ } elsif ($opcode == 8) {
+ my $statuscode = unpack ("n", $frame_data);
+ $req_close = 1;
+ } else {
+ die "received unhandled websocket opcode $opcode\n";
+ }
+ }
+
+ return ($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, $old_termios);
+};
+
__PACKAGE__->register_method ({
name => 'enter',
path => 'enter',
code => sub {
my ($param) = @_;
- my $conn = PVE::APIClient::Config::get_remote_connection($param->{remote});
- my $node = 'localhost'; # ??
+ 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 = $conn->get("api2/json/cluster/resources", { type => 'vm'});
+ my ($resource) = grep { $_->{type} eq "lxc" && $_->{vmid} eq $param->{vmid}} @$resource_list;
+
+ die "container '$param->{vmid}' does not exist\n"
+ if !(defined($resource) && defined($resource->{node}));
+
+ my $node = $resource->{node};
my $api_path = "api2/json/nodes/$node/lxc/$param->{vmid}";
- my $res = $conn->get($api_path, {});
+ my $termproxy = $conn->post("${api_path}/termproxy", {});
- print to_json($res, { pretty => 1, canonical => 1});
- die "implement me";
+ my $web_socket = IO::Socket::SSL->new(
+ PeerHost => $conn->{host},
+ PeerPort => $conn->{port},
+ SSL_verify_mode => SSL_VERIFY_NONE, # fixme: ???
+ timeout => 30) ||
+ die "failed to connect: $!\n";
+
+ # WebSocket Handshake
+
+ my ($request, $wskey) = $build_web_socket_request->(
+ $conn->{host}, "/$api_path/vncwebsocket", $conn->{ticket}, $termproxy);
+
+ $web_socket->syswrite($request);
+
+ my $wsbuf = '';
+
+ my $wb_socket_read_available_bytes = sub {
+ my $nr = $web_socket->sysread($wsbuf, $max_payload_size, length($wsbuf));
+ die "web socket read error - $!\n" if $nr < 0;
+ return $nr;
+ };
+
+ my $raw_response = '';
+
+ while(1) {
+ my $nr = $wb_socket_read_available_bytes->();
+ if ($wsbuf =~ s/^(.*?)$CRLF$CRLF//s) {
+ $raw_response = $1;
+ last;
+ }
+ last if !$nr;
+ };
+
+ # Note: we keep any remaining data in $wsbuf
+
+ my $response = HTTP::Response->parse($raw_response);
+
+ # Note: Digest::SHA::sha1_base64 has wrong padding
+ my $wsaccept = Digest::SHA::sha1_base64("${wskey}258EAFA5-E914-47DA-95CA-C5AB0DC85B11") . "=";
+
+ die "got invalid websocket reponse: $raw_response\n"
+ if !(($response->code == 101) &&
+ (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));
+
+ # send auth again...
+ 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));
+ }
+ }
+
+ # 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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