1 package PVE
::APIClient
::Commands
::lxc
;
14 use PVE
::JSONSchema
qw(get_standard_option);
18 use base
qw(PVE::CLIHandler);
19 use PVE
::APIClient
::Config
;
21 my $CRLF = "\x0D\x0A";
22 my $max_payload_size = 65536;
24 my $build_web_socket_request = sub {
25 my ($host, $path, $ticket, $termproxy) = @_;
28 $key .= chr(int(rand(256))) for 1 .. 16;
29 my $enckey = MIME
::Base64
::encode_base64
($key, '');
31 my $encticket = uri_escape
($ticket);
32 my $cookie = "PVEAuthCookie=$encticket; path=/; secure;";
34 $path .= "?port=$termproxy->{port}" .
35 "&vncticket=" . uri_escape
($termproxy->{ticket
});
37 my $request = "GET $path HTTP/1.1$CRLF"
38 . "Upgrade: WebSocket$CRLF"
39 . "Connection: Upgrade$CRLF"
41 . "Sec-WebSocket-Key: $enckey$CRLF"
42 . "Sec-WebSocket-Version: 13$CRLF"
43 . "Sec-WebSocket-Protocol: binary$CRLF"
44 . "Cookie: $cookie$CRLF"
47 return ($request, $enckey);
50 my $create_websockt_frame = sub {
53 my $string = "\x82"; # binary frame
54 my $payload_len = length($payload);
55 if ($payload_len <= 125) {
56 $string .= pack 'C', $payload_len | 128;
57 } elsif ($payload_len <= 0xffff) {
58 $string .= pack 'C', 126 | 128;
59 $string .= pack 'n', $payload_len;
61 $string .= pack 'C', 127 | 128;
62 $string .= pack 'Q>', $payload_len;
65 $string .= pack 'N', 0; # we simply use 0 as mask
71 my $parse_web_socket_frame = sub {
74 my $wsbuf = $$wsbuf_ref;
79 while (my $len = length($wsbuf)) {
82 my $hdr = unpack('C', substr($wsbuf, 0, 1));
83 my $opcode = $hdr & 0b00001111;
84 my $fin = $hdr & 0b10000000;
86 die "received fragmented websocket frame\n" if !$fin;
88 my $rsv = $hdr & 0b01110000;
89 die "received websocket frame with RSV flags\n" if $rsv;
91 my $payload_len = unpack 'C', substr($wsbuf, 1, 1);
93 my $masked = $payload_len & 0b10000000;
94 die "received masked websocket frame from server\n" if $masked;
97 $payload_len = $payload_len & 0b01111111;
98 if ($payload_len == 126) {
100 $payload_len = unpack('n', substr($wsbuf, $offset, 2));
102 } elsif ($payload_len == 127) {
104 $payload_len = unpack('Q>', substr($wsbuf, $offset, 8));
108 die "received too large websocket frame (len = $payload_len)\n"
109 if ($payload_len > $max_payload_size) || ($payload_len < 0);
111 last if $len < ($offset + $payload_len);
113 my $data = substr($wsbuf, 0, $offset + $payload_len, ''); # now consume data
115 my $frame_data = substr($data, $offset, $payload_len);
117 $payload = '' if !defined($payload);
118 $payload .= $frame_data;
120 if ($opcode == 1 || $opcode == 2) {
122 } elsif ($opcode == 8) {
123 my $statuscode = unpack ("n", $frame_data);
126 die "received unhandled websocket opcode $opcode\n";
130 return ($payload, $req_close);
133 my $client_exit = sub {
134 my ($select, $web_socket, $old_termios) = @_;
136 foreach my $fh ($select->handles) {
137 $select->remove($fh);
139 if ($fh == $web_socket) {
140 if ($fh->connected) {
143 # Opcode, mask, statuscode
144 my $msg = "\x88" . pack('N', 0) . pack('n', 0);
153 # Reset the terminal parameters.
156 PVE
::PTY
::tcsetattr
(*STDIN
, $old_termios);
159 __PACKAGE__-
>register_method ({
163 description
=> "Enter container console.",
165 additionalProperties
=> 0,
167 remote
=> get_standard_option
('pveclient-remote-name'),
169 description
=> "The container ID",
174 returns
=> { type
=> 'null'},
178 my $config = PVE
::APIClient
::Config-
>load();
179 my $conn = PVE
::APIClient
::Config-
>remote_conn($config, $param->{remote
});
181 # Get the real node from the resources endpoint
182 my $resource_list = $conn->get("api2/json/cluster/resources", { type
=> 'vm'});
183 my ($resource) = grep { $_->{type
} eq "lxc" && $_->{vmid
} eq $param->{vmid
}} @$resource_list;
185 die "container '$param->{vmid}' does not exist\n"
186 if !(defined($resource) && defined($resource->{node
}));
188 my $node = $resource->{node
};
190 my $api_path = "api2/json/nodes/$node/lxc/$param->{vmid}";
192 my $termproxy = $conn->post("${api_path}/termproxy", {});
194 my $web_socket = IO
::Socket
::SSL-
>new(
195 PeerHost
=> $conn->{host
},
196 PeerPort
=> $conn->{port
},
197 SSL_verify_mode
=> SSL_VERIFY_NONE
, # fixme: ???
199 die "failed to connect: $!\n";
201 # WebSocket Handshake
203 my ($request, $wskey) = $build_web_socket_request->(
204 $conn->{host
}, "/$api_path/vncwebsocket", $conn->{ticket
}, $termproxy);
206 $web_socket->syswrite($request);
210 my $wb_socket_read_available_bytes = sub {
211 my $nr = $web_socket->sysread($wsbuf, $max_payload_size, length($wsbuf));
212 die "web socket read error - $!\n" if $nr < 0;
216 my $raw_response = '';
219 my $nr = $wb_socket_read_available_bytes->();
220 if ($wsbuf =~ s/^(.*?)$CRLF$CRLF//s) {
227 # Note: we keep any remaining data in $wsbuf
229 my $response = HTTP
::Response-
>parse($raw_response);
231 # Note: Digest::SHA::sha1_base64 has wrong padding
232 my $wsaccept = Digest
::SHA
::sha1_base64
("${wskey}258EAFA5-E914-47DA-95CA-C5AB0DC85B11") . "=";
234 die "got invalid websocket reponse: $raw_response\n"
235 if !(($response->code == 101) &&
236 (lc $response->header('connection') eq 'upgrade') &&
237 (lc $response->header('upgrade') eq 'websocket') &&
238 ($response->header('sec-websocket-protocol') eq 'binary') &&
239 ($response->header('sec-websocket-accept') eq $wsaccept));
242 my $frame = $create_websockt_frame->($termproxy->{user
} . ":" . $termproxy->{ticket
} . "\n");
243 $web_socket->syswrite($frame);
245 # Send resize command
246 my ($columns, $rows) = PVE
::PTY
::tcgetsize
(*STDIN
);
247 $frame = $create_websockt_frame->("1:$columns:$rows:");
248 $web_socket->syswrite($frame);
250 # Set STDIN to "raw -echo" mode
251 my $old_termios = PVE
::PTY
::tcgetattr
(*STDIN
);
252 my $raw_termios = {%$old_termios};
253 PVE
::PTY
::cfmakeraw
($raw_termios);
254 PVE
::PTY
::tcsetattr
(*STDIN
, $raw_termios);
256 # And set it to non-blocking so we can every char with IO::Select.
259 my $select = IO
::Select-
>new;
261 $web_socket->blocking(0);
262 $select->add($web_socket);
263 $select->add(fileno(STDIN
));
266 my $ctrl_a_pressed_before = 0;
267 my $next_ping = time() + 3;
271 # Ping server every 3 seconds.
273 if ($now >= $next_ping) {
274 push(@messages, $create_websockt_frame->("2"));
275 $next_ping = $now + 3;
279 foreach my $fh ($select->can_write(0.5)) {
280 if ($fh == $web_socket and my $msg = shift @messages) {
281 $fh->syswrite($msg, length($msg));
286 foreach my $fh ($select->can_read(0.5)) {
289 if ($fh == $web_socket) {
290 # Read from WebSocket
291 my $nr = $wb_socket_read_available_bytes->();
292 my ($payload, $req_close) = $parse_web_socket_frame->(\
$wsbuf);
294 if ($payload ne "OK") {
295 syswrite(\
*STDOUT
, $payload, length($payload));
300 elsif ($fh == fileno(STDIN
)) {
303 my $nr = read(\
*STDIN
, my $buff, 4096);
308 my $char = ord($buff);
310 if ($ctrl_a_pressed_before == 1 && $char == hex("0x71")) {
311 $client_exit->($select, $web_socket, $old_termios);
315 if ($char == hex("0x01")) {
316 if ($ctrl_a_pressed_before == 0) {
317 $ctrl_a_pressed_before = 1;
321 $ctrl_a_pressed_before = 0;
324 push(@messages, $create_websockt_frame->("0:" . $nr . ":" . $buff));
329 print "ERROR: " . $@ . ".\n" if $@;
331 $client_exit->($select, $web_socket, $old_termios);
336 __PACKAGE__-
>register_method ({
340 description
=> "List containers.",
342 additionalProperties
=> 0,
344 remote
=> get_standard_option
('pveclient-remote-name'),
347 returns
=> { type
=> 'null'},
357 enter
=> [ __PACKAGE__
, 'enter', ['remote', 'vmid']],
358 list
=> [ __PACKAGE__
, 'list', ['remote']],