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git.proxmox.com Git - pve-client.git/blob - PVE/APIClient/Commands/lxc.pm
81dfd3f01c9437ba2742cf0a4b48bdd7891ccd87
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 {
77 while (my $len = length($$wsbuf_ref)) {
80 my $hdr = unpack('C', substr($$wsbuf_ref, 0, 1));
81 my $opcode = $hdr & 0b00001111;
82 my $fin = $hdr & 0b10000000;
84 die "received fragmented websocket frame\n" if !$fin;
86 my $rsv = $hdr & 0b01110000;
87 die "received websocket frame with RSV flags\n" if $rsv;
89 my $payload_len = unpack 'C', substr($$wsbuf_ref, 1, 1);
91 my $masked = $payload_len & 0b10000000;
92 die "received masked websocket frame from server\n" if $masked;
95 $payload_len = $payload_len & 0b01111111;
96 if ($payload_len == 126) {
98 $payload_len = unpack('n', substr($$wsbuf_ref, $offset, 2));
100 } elsif ($payload_len == 127) {
102 $payload_len = unpack('Q>', substr($$wsbuf_ref, $offset, 8));
106 die "received too large websocket frame (len = $payload_len)\n"
107 if ($payload_len > $max_payload_size) || ($payload_len < 0);
109 last if $len < ($offset + $payload_len);
111 my $data = substr($$wsbuf_ref, 0, $offset + $payload_len, ''); # now consume data
113 my $frame_data = substr($data, $offset, $payload_len);
115 $payload = '' if !defined($payload);
116 $payload .= $frame_data;
118 if ($opcode == 1 || $opcode == 2) {
120 } elsif ($opcode == 8) {
121 my $statuscode = unpack ("n", $frame_data);
124 die "received unhandled websocket opcode $opcode\n";
128 return ($payload, $req_close);
131 __PACKAGE__-
>register_method ({
135 description
=> "Enter container console.",
137 additionalProperties
=> 0,
139 remote
=> get_standard_option
('pveclient-remote-name'),
141 description
=> "The container ID",
146 returns
=> { type
=> 'null'},
150 my $config = PVE
::APIClient
::Config-
>load();
151 my $conn = PVE
::APIClient
::Config-
>remote_conn($config, $param->{remote
});
153 # Get the real node from the resources endpoint
154 my $resource_list = $conn->get("api2/json/cluster/resources", { type
=> 'vm'});
155 my ($resource) = grep { $_->{type
} eq "lxc" && $_->{vmid
} eq $param->{vmid
}} @$resource_list;
157 die "container '$param->{vmid}' does not exist\n"
158 if !(defined($resource) && defined($resource->{node
}));
160 my $node = $resource->{node
};
162 my $api_path = "api2/json/nodes/$node/lxc/$param->{vmid}";
164 my $termproxy = $conn->post("${api_path}/termproxy", {});
166 my $web_socket = IO
::Socket
::SSL-
>new(
167 PeerHost
=> $conn->{host
},
168 PeerPort
=> $conn->{port
},
169 SSL_verify_mode
=> SSL_VERIFY_NONE
, # fixme: ???
171 die "failed to connect: $!\n";
173 # WebSocket Handshake
175 my ($request, $wskey) = $build_web_socket_request->(
176 $conn->{host
}, "/$api_path/vncwebsocket", $conn->{ticket
}, $termproxy);
178 $web_socket->syswrite($request);
182 my $wb_socket_read_available_bytes = sub {
183 my $nr = $web_socket->sysread($wsbuf, $max_payload_size, length($wsbuf));
184 die "web socket read error - $!\n" if $nr < 0;
188 my $raw_response = '';
191 my $nr = $wb_socket_read_available_bytes->();
192 if ($wsbuf =~ s/^(.*?)$CRLF$CRLF//s) {
199 # Note: we keep any remaining data in $wsbuf
201 my $response = HTTP
::Response-
>parse($raw_response);
203 # Note: Digest::SHA::sha1_base64 has wrong padding
204 my $wsaccept = Digest
::SHA
::sha1_base64
("${wskey}258EAFA5-E914-47DA-95CA-C5AB0DC85B11") . "=";
206 die "got invalid websocket reponse: $raw_response\n"
207 if !(($response->code == 101) &&
208 (lc $response->header('connection') eq 'upgrade') &&
209 (lc $response->header('upgrade') eq 'websocket') &&
210 ($response->header('sec-websocket-protocol') eq 'binary') &&
211 ($response->header('sec-websocket-accept') eq $wsaccept));
214 my $frame = $create_websockt_frame->($termproxy->{user
} . ":" . $termproxy->{ticket
} . "\n");
215 $web_socket->syswrite($frame);
217 # Send resize command
218 my ($columns, $rows) = PVE
::PTY
::tcgetsize
(*STDIN
);
219 $frame = $create_websockt_frame->("1:$columns:$rows:");
220 $web_socket->syswrite($frame);
222 # Set STDIN to "raw -echo" mode
223 my $old_termios = PVE
::PTY
::tcgetattr
(*STDIN
);
224 my $raw_termios = {%$old_termios};
226 my $select = IO
::Select-
>new;
229 $SIG{TERM
} = $SIG{INT
} = $SIG{KILL
} = sub { die "received interrupt\n"; };
231 PVE
::PTY
::cfmakeraw
($raw_termios);
232 PVE
::PTY
::tcsetattr
(*STDIN
, $raw_termios);
234 # And set it to non-blocking so we can every char with IO::Select.
237 $web_socket->blocking(1);
238 $select->add($web_socket);
239 my $input_fh = fileno(STDIN
);
240 $select->add($input_fh);
242 my $ctrl_a_pressed_before = 0;
245 while(my @ready = $select->can_read(3)) {
246 foreach my $fh (@ready) {
248 if ($fh == $web_socket) {
249 # Read from WebSocket
251 my $nr = $wb_socket_read_available_bytes->();
253 die "web socket read error $!\n";
257 my ($payload, $req_close) = $parse_web_socket_frame->(\
$wsbuf);
259 syswrite(\
*STDOUT
, $payload);
261 return if $req_close;
264 } elsif ($fh == $input_fh) {
267 my $nr = read(\
*STDIN
, my $buff, 4096);
268 return if !$nr; # EOF or error
270 my $char = ord($buff);
273 return if $ctrl_a_pressed_before == 1 && $char == hex("0x71");
275 $ctrl_a_pressed_before = ($char == hex("0x01") && $ctrl_a_pressed_before == 0) ?
1 : 0;
277 my $frame = $create_websockt_frame->("0:" . $nr . ":" . $buff);
278 syswrite($web_socket, $frame);
283 syswrite($web_socket, $create_websockt_frame->("2")); # ping server to keep connection alive
290 # switch back to blocking mode (else later shell commands will fail).
293 if ($web_socket->connected) {
295 my $msg = "\x88" . pack('N', 0) . pack('n', 0); # Opcode, mask, statuscode
296 $web_socket->syswrite($msg);
300 # Reset the terminal parameters.
301 syswrite(\
*STDOUT
, "\e[24H\r\n");
302 PVE
::PTY
::tcsetattr
(*STDIN
, $old_termios);
304 warn $@ if $@; # show cleanup errors
306 print STDERR
"\nERROR: $err" if $err;
311 __PACKAGE__-
>register_method ({
315 description
=> "List containers.",
317 additionalProperties
=> 0,
319 remote
=> get_standard_option
('pveclient-remote-name'),
322 returns
=> { type
=> 'null'},
332 enter
=> [ __PACKAGE__
, 'enter', ['remote', 'vmid']],
333 list
=> [ __PACKAGE__
, 'list', ['remote']],