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1 | package PVE::HTTPServer; | |
2 | ||
3 | use strict; | |
4 | use warnings; | |
5 | use Time::HiRes qw(usleep ualarm gettimeofday tv_interval); | |
6 | use Socket qw(IPPROTO_TCP TCP_NODELAY SOMAXCONN); | |
7 | use POSIX qw(strftime EINTR EAGAIN); | |
8 | use Fcntl; | |
9 | use IO::File; | |
10 | use File::stat qw(); | |
11 | use MIME::Base64; | |
12 | use Digest::MD5; | |
13 | use Digest::SHA; | |
14 | # use AnyEvent::Strict; # only use this for debugging | |
15 | use AnyEvent::Util qw(guard fh_nonblocking WSAEWOULDBLOCK WSAEINPROGRESS); | |
16 | use AnyEvent::Socket; | |
17 | use AnyEvent::Handle; | |
18 | use Net::SSLeay; | |
19 | use AnyEvent::TLS; | |
20 | use AnyEvent::IO; | |
21 | use AnyEvent::HTTP; | |
22 | use Fcntl (); | |
23 | use Compress::Zlib; | |
24 | use PVE::SafeSyslog; | |
25 | use PVE::INotify; | |
26 | use PVE::RPCEnvironment; | |
27 | use PVE::REST; | |
28 | ||
29 | use Net::IP; | |
30 | use URI; | |
31 | use URI::Escape; | |
32 | use HTTP::Status qw(:constants); | |
33 | use HTTP::Headers; | |
34 | use HTTP::Response; | |
35 | use Data::Dumper; | |
36 | ||
37 | my $limit_max_headers = 30; | |
38 | my $limit_max_header_size = 8*1024; | |
39 | my $limit_max_post = 16*1024; | |
40 | ||
41 | ||
42 | my $known_methods = { | |
43 | GET => 1, | |
44 | POST => 1, | |
45 | PUT => 1, | |
46 | DELETE => 1, | |
47 | }; | |
48 | ||
49 | my $baseuri = "/api2"; | |
50 | ||
51 | sub split_abs_uri { | |
52 | my ($abs_uri) = @_; | |
53 | ||
54 | my ($format, $rel_uri) = $abs_uri =~ m/^\Q$baseuri\E\/+([a-z][a-z0-9]+)(\/.*)?$/; | |
55 | $rel_uri = '/' if !$rel_uri; | |
56 | ||
57 | return wantarray ? ($rel_uri, $format) : $rel_uri; | |
58 | } | |
59 | ||
60 | # generic formatter support | |
61 | ||
62 | my $formatter_hash = {}; | |
63 | ||
64 | sub register_formatter { | |
65 | my ($format, $func) = @_; | |
66 | ||
67 | die "formatter '$format' already defined" if $formatter_hash->{$format}; | |
68 | ||
69 | $formatter_hash->{$format} = { | |
70 | func => $func, | |
71 | }; | |
72 | } | |
73 | ||
74 | sub get_formatter { | |
75 | my ($format) = @_; | |
76 | ||
77 | return undef if !$format; | |
78 | ||
79 | my $info = $formatter_hash->{$format}; | |
80 | return undef if !$info; | |
81 | ||
82 | return $info->{func}; | |
83 | } | |
84 | ||
85 | my $login_formatter_hash = {}; | |
86 | ||
87 | sub register_login_formatter { | |
88 | my ($format, $func) = @_; | |
89 | ||
90 | die "login formatter '$format' already defined" if $login_formatter_hash->{$format}; | |
91 | ||
92 | $login_formatter_hash->{$format} = { | |
93 | func => $func, | |
94 | }; | |
95 | } | |
96 | ||
97 | sub get_login_formatter { | |
98 | my ($format) = @_; | |
99 | ||
100 | return undef if !$format; | |
101 | ||
102 | my $info = $login_formatter_hash->{$format}; | |
103 | return undef if !$info; | |
104 | ||
105 | return $info->{func}; | |
106 | } | |
107 | ||
108 | # server implementation | |
109 | ||
110 | sub log_request { | |
111 | my ($self, $reqstate) = @_; | |
112 | ||
113 | my $loginfo = $reqstate->{log}; | |
114 | ||
115 | # like apache2 common log format | |
116 | # LogFormat "%h %l %u %t \"%r\" %>s %b \"%{Referer}i\" \"%{User-agent}i\"" | |
117 | ||
118 | return if $loginfo->{written}; # avoid duplicate logs | |
119 | $loginfo->{written} = 1; | |
120 | ||
121 | my $peerip = $reqstate->{peer_host} || '-'; | |
122 | my $userid = $loginfo->{userid} || '-'; | |
123 | my $content_length = defined($loginfo->{content_length}) ? $loginfo->{content_length} : '-'; | |
124 | my $code = $loginfo->{code} || 500; | |
125 | my $requestline = $loginfo->{requestline} || '-'; | |
126 | my $timestr = strftime("%d/%b/%Y:%H:%M:%S %z", localtime()); | |
127 | ||
128 | my $msg = "$peerip - $userid [$timestr] \"$requestline\" $code $content_length\n"; | |
129 | ||
130 | $self->write_log($msg); | |
131 | } | |
132 | ||
133 | sub log_aborted_request { | |
134 | my ($self, $reqstate, $error) = @_; | |
135 | ||
136 | my $r = $reqstate->{request}; | |
137 | return if !$r; # no active request | |
138 | ||
139 | if ($error) { | |
140 | syslog("err", "problem with client $reqstate->{peer_host}; $error"); | |
141 | } | |
142 | ||
143 | $self->log_request($reqstate); | |
144 | } | |
145 | ||
146 | sub cleanup_reqstate { | |
147 | my ($reqstate) = @_; | |
148 | ||
149 | delete $reqstate->{log}; | |
150 | delete $reqstate->{request}; | |
151 | delete $reqstate->{proto}; | |
152 | delete $reqstate->{accept_gzip}; | |
153 | delete $reqstate->{starttime}; | |
154 | ||
155 | if ($reqstate->{tmpfilename}) { | |
156 | unlink $reqstate->{tmpfilename}; | |
157 | delete $reqstate->{tmpfilename}; | |
158 | } | |
159 | } | |
160 | ||
161 | sub client_do_disconnect { | |
162 | my ($self, $reqstate) = @_; | |
163 | ||
164 | cleanup_reqstate($reqstate); | |
165 | ||
166 | my $shutdown_hdl = sub { | |
167 | my $hdl = shift; | |
168 | ||
169 | shutdown($hdl->{fh}, 1); | |
170 | # clear all handlers | |
171 | $hdl->on_drain(undef); | |
172 | $hdl->on_read(undef); | |
173 | $hdl->on_eof(undef); | |
174 | }; | |
175 | ||
176 | if (my $proxyhdl = delete $reqstate->{proxyhdl}) { | |
177 | &$shutdown_hdl($proxyhdl); | |
178 | } | |
179 | ||
180 | my $hdl = delete $reqstate->{hdl}; | |
181 | ||
182 | if (!$hdl) { | |
183 | syslog('err', "detected empty handle"); | |
184 | return; | |
185 | } | |
186 | ||
187 | print "close connection $hdl\n" if $self->{debug}; | |
188 | ||
189 | &$shutdown_hdl($hdl); | |
190 | ||
191 | $self->{conn_count}--; | |
192 | ||
193 | print "$$: CLOSE FH" . $hdl->{fh}->fileno() . " CONN$self->{conn_count}\n" if $self->{debug}; | |
194 | } | |
195 | ||
196 | sub finish_response { | |
197 | my ($self, $reqstate) = @_; | |
198 | ||
199 | my $hdl = $reqstate->{hdl}; | |
200 | ||
201 | cleanup_reqstate($reqstate); | |
202 | ||
203 | if (!$self->{end_loop} && $reqstate->{keep_alive} > 0) { | |
204 | # print "KEEPALIVE $reqstate->{keep_alive}\n" if $self->{debug}; | |
205 | $hdl->on_read(sub { | |
206 | eval { $self->push_request_header($reqstate); }; | |
207 | warn $@ if $@; | |
208 | }); | |
209 | } else { | |
210 | $hdl->on_drain (sub { | |
211 | eval { | |
212 | $self->client_do_disconnect($reqstate); | |
213 | }; | |
214 | warn $@ if $@; | |
215 | }); | |
216 | } | |
217 | } | |
218 | ||
219 | sub response { | |
220 | my ($self, $reqstate, $resp, $mtime, $nocomp, $delay) = @_; | |
221 | ||
222 | #print "$$: send response: " . Dumper($resp); | |
223 | ||
224 | # activate timeout | |
225 | $reqstate->{hdl}->timeout_reset(); | |
226 | $reqstate->{hdl}->timeout($self->{timeout}); | |
227 | ||
228 | $nocomp = 1 if !$reqstate->{accept_gzip}; | |
229 | ||
230 | my $code = $resp->code; | |
231 | my $msg = $resp->message || HTTP::Status::status_message($code); | |
232 | ($msg) = $msg =~m/^(.*)$/m; | |
233 | my $content = $resp->content; | |
234 | ||
235 | if ($code =~ /^(1\d\d|[23]04)$/) { | |
236 | # make sure content we have no content | |
237 | $content = ""; | |
238 | } | |
239 | ||
240 | $reqstate->{keep_alive} = 0 if ($code >= 400) || $self->{end_loop}; | |
241 | ||
242 | $reqstate->{log}->{code} = $code; | |
243 | ||
244 | my $proto = $reqstate->{proto} ? $reqstate->{proto}->{str} : 'HTTP/1.0'; | |
245 | my $res = "$proto $code $msg\015\012"; | |
246 | ||
247 | my $ctime = time(); | |
248 | my $date = HTTP::Date::time2str($ctime); | |
249 | $resp->header('Date' => $date); | |
250 | if ($mtime) { | |
251 | $resp->header('Last-Modified' => HTTP::Date::time2str($mtime)); | |
252 | } else { | |
253 | $resp->header('Expires' => $date); | |
254 | $resp->header('Cache-Control' => "max-age=0"); | |
255 | $resp->header("Pragma", "no-cache"); | |
256 | } | |
257 | ||
258 | $resp->header('Server' => "pve-api-daemon/3.0"); | |
259 | ||
260 | my $content_length; | |
261 | if ($content) { | |
262 | ||
263 | $content_length = length($content); | |
264 | ||
265 | if (!$nocomp && ($content_length > 1024)) { | |
266 | my $comp = Compress::Zlib::memGzip($content); | |
267 | $resp->header('Content-Encoding', 'gzip'); | |
268 | $content = $comp; | |
269 | $content_length = length($content); | |
270 | } | |
271 | $resp->header("Content-Length" => $content_length); | |
272 | $reqstate->{log}->{content_length} = $content_length; | |
273 | ||
274 | } else { | |
275 | $resp->remove_header("Content-Length"); | |
276 | } | |
277 | ||
278 | if ($reqstate->{keep_alive} > 0) { | |
279 | $resp->push_header('Connection' => 'Keep-Alive'); | |
280 | } else { | |
281 | $resp->header('Connection' => 'close'); | |
282 | } | |
283 | ||
284 | $res .= $resp->headers_as_string("\015\012"); | |
285 | #print "SEND(without content) $res\n" if $self->{debug}; | |
286 | ||
287 | $res .= "\015\012"; | |
288 | $res .= $content if $content; | |
289 | ||
290 | $self->log_request($reqstate, $reqstate->{request}); | |
291 | ||
292 | if ($delay && $delay > 0) { | |
293 | my $w; $w = AnyEvent->timer(after => $delay, cb => sub { | |
294 | undef $w; # delete reference | |
295 | $reqstate->{hdl}->push_write($res); | |
296 | $self->finish_response($reqstate); | |
297 | }); | |
298 | } else { | |
299 | $reqstate->{hdl}->push_write($res); | |
300 | $self->finish_response($reqstate); | |
301 | } | |
302 | } | |
303 | ||
304 | sub error { | |
305 | my ($self, $reqstate, $code, $msg, $hdr, $content) = @_; | |
306 | ||
307 | eval { | |
308 | my $resp = HTTP::Response->new($code, $msg, $hdr, $content); | |
309 | $self->response($reqstate, $resp); | |
310 | }; | |
311 | warn $@ if $@; | |
312 | } | |
313 | ||
314 | sub send_file_start { | |
315 | my ($self, $reqstate, $filename) = @_; | |
316 | ||
317 | eval { | |
318 | # print "SEND FILE $filename\n"; | |
319 | # Note: aio_load() this is not really async unless we use IO::AIO! | |
320 | eval { | |
321 | ||
322 | my $r = $reqstate->{request}; | |
323 | ||
324 | my $fh = IO::File->new($filename, '<') || | |
325 | die "$!\n"; | |
326 | my $stat = File::stat::stat($fh) || | |
327 | die "$!\n"; | |
328 | ||
329 | my $mtime = $stat->mtime; | |
330 | ||
331 | if (my $ifmod = $r->header('if-modified-since')) { | |
332 | my $iftime = HTTP::Date::str2time($ifmod); | |
333 | if ($mtime <= $iftime) { | |
334 | my $resp = HTTP::Response->new(304, "NOT MODIFIED"); | |
335 | $self->response($reqstate, $resp, $mtime); | |
336 | return; | |
337 | } | |
338 | } | |
339 | ||
340 | my $data; | |
341 | my $len = sysread($fh, $data, $stat->size); | |
342 | die "got short file\n" if !defined($len) || $len != $stat->size; | |
343 | ||
344 | my $ct; | |
345 | my $nocomp; | |
346 | if ($filename =~ m/\.css$/) { | |
347 | $ct = 'text/css'; | |
348 | } elsif ($filename =~ m/\.html$/) { | |
349 | $ct = 'text/html'; | |
350 | } elsif ($filename =~ m/\.js$/) { | |
351 | $ct = 'application/javascript'; | |
352 | } elsif ($filename =~ m/\.png$/) { | |
353 | $ct = 'image/png'; | |
354 | $nocomp = 1; | |
355 | } elsif ($filename =~ m/\.ico$/) { | |
356 | $ct = 'image/x-icon'; | |
357 | $nocomp = 1; | |
358 | } elsif ($filename =~ m/\.gif$/) { | |
359 | $ct = 'image/gif'; | |
360 | $nocomp = 1; | |
361 | } elsif ($filename =~ m/\.jar$/) { | |
362 | $ct = 'application/java-archive'; | |
363 | $nocomp = 1; | |
364 | } elsif ($filename =~ m/\.woff$/) { | |
365 | $ct = 'application/font-woff'; | |
366 | $nocomp = 1; | |
367 | } elsif ($filename =~ m/\.woff2$/) { | |
368 | $ct = 'application/font-woff2'; | |
369 | $nocomp = 1; | |
370 | } elsif ($filename =~ m/\.ttf$/) { | |
371 | $ct = 'application/font-snft'; | |
372 | $nocomp = 1; | |
373 | } else { | |
374 | die "unable to detect content type"; | |
375 | } | |
376 | ||
377 | my $header = HTTP::Headers->new(Content_Type => $ct); | |
378 | my $resp = HTTP::Response->new(200, "OK", $header, $data); | |
379 | $self->response($reqstate, $resp, $mtime, $nocomp); | |
380 | }; | |
381 | if (my $err = $@) { | |
382 | $self->error($reqstate, 501, $err); | |
383 | } | |
384 | }; | |
385 | ||
386 | warn $@ if $@; | |
387 | } | |
388 | ||
389 | sub websocket_proxy { | |
390 | my ($self, $reqstate, $wsaccept, $wsproto, $param) = @_; | |
391 | ||
392 | eval { | |
393 | my $remhost; | |
394 | my $remport; | |
395 | ||
396 | my $max_payload_size = 65536; | |
397 | ||
398 | my $binary; | |
399 | if ($wsproto eq 'binary') { | |
400 | $binary = 1; | |
401 | } elsif ($wsproto eq 'base64') { | |
402 | $binary = 0; | |
403 | } else { | |
404 | die "websocket_proxy: unsupported protocol '$wsproto'\n"; | |
405 | } | |
406 | ||
407 | if ($param->{port}) { | |
408 | $remhost = 'localhost'; | |
409 | $remport = $param->{port}; | |
410 | } elsif ($param->{socket}) { | |
411 | $remhost = 'unix/'; | |
412 | $remport = $param->{socket}; | |
413 | } else { | |
414 | die "websocket_proxy: missing port or socket\n"; | |
415 | } | |
416 | ||
417 | tcp_connect $remhost, $remport, sub { | |
418 | my ($fh) = @_ | |
419 | or die "connect to '$remhost:$remport' failed: $!"; | |
420 | ||
421 | print "$$: CONNECTed to '$remhost:$remport'\n" if $self->{debug}; | |
422 | ||
423 | $reqstate->{proxyhdl} = AnyEvent::Handle->new( | |
424 | fh => $fh, | |
425 | rbuf_max => 64*1024, | |
426 | wbuf_max => 64*10*1024, | |
427 | timeout => 5, | |
428 | on_eof => sub { | |
429 | my ($hdl) = @_; | |
430 | eval { | |
431 | $self->log_aborted_request($reqstate); | |
432 | $self->client_do_disconnect($reqstate); | |
433 | }; | |
434 | if (my $err = $@) { syslog('err', $err); } | |
435 | }, | |
436 | on_error => sub { | |
437 | my ($hdl, $fatal, $message) = @_; | |
438 | eval { | |
439 | $self->log_aborted_request($reqstate, $message); | |
440 | $self->client_do_disconnect($reqstate); | |
441 | }; | |
442 | if (my $err = $@) { syslog('err', "$err"); } | |
443 | }); | |
444 | ||
445 | my $proxyhdlreader = sub { | |
446 | my ($hdl) = @_; | |
447 | ||
448 | my $len = length($hdl->{rbuf}); | |
449 | my $data = substr($hdl->{rbuf}, 0, $len, ''); | |
450 | ||
451 | my $string; | |
452 | my $payload; | |
453 | ||
454 | if ($binary) { | |
455 | $string = "\x82"; # binary frame | |
456 | $payload = $data; | |
457 | } else { | |
458 | $string = "\x81"; # text frame | |
459 | $payload = encode_base64($data, ''); | |
460 | } | |
461 | ||
462 | my $payload_len = length($payload); | |
463 | if ($payload_len <= 125) { | |
464 | $string .= pack 'C', $payload_len; | |
465 | } elsif ($payload_len <= 0xffff) { | |
466 | $string .= pack 'C', 126; | |
467 | $string .= pack 'n', $payload_len; | |
468 | } else { | |
469 | $string .= pack 'C', 127; | |
470 | $string .= pack 'Q>', $payload_len; | |
471 | } | |
472 | $string .= $payload; | |
473 | ||
474 | $reqstate->{hdl}->push_write($string) if $reqstate->{hdl}; | |
475 | }; | |
476 | ||
477 | my $hdlreader = sub { | |
478 | my ($hdl) = @_; | |
479 | ||
480 | my $len = length($hdl->{rbuf}); | |
481 | return if $len < 2; | |
482 | ||
483 | my $hdr = unpack('C', substr($hdl->{rbuf}, 0, 1)); | |
484 | my $opcode = $hdr & 0b00001111; | |
485 | my $fin = $hdr & 0b10000000; | |
486 | ||
487 | die "received fragmented websocket frame\n" if !$fin; | |
488 | ||
489 | my $rsv = $hdr & 0b01110000; | |
490 | die "received websocket frame with RSV flags\n" if $rsv; | |
491 | ||
492 | my $payload_len = unpack 'C', substr($hdl->{rbuf}, 1, 1); | |
493 | ||
494 | my $masked = $payload_len & 0b10000000; | |
495 | die "received unmasked websocket frame from client\n" if !$masked; | |
496 | ||
497 | my $offset = 2; | |
498 | $payload_len = $payload_len & 0b01111111; | |
499 | if ($payload_len == 126) { | |
500 | return if $len < 4; | |
501 | $payload_len = unpack('n', substr($hdl->{rbuf}, $offset, 2)); | |
502 | $offset += 2; | |
503 | } elsif ($payload_len == 127) { | |
504 | return if $len < 10; | |
505 | $payload_len = unpack('Q>', substr($hdl->{rbuf}, $offset, 8)); | |
506 | $offset += 8; | |
507 | } | |
508 | ||
509 | die "received too large websocket frame (len = $payload_len)\n" | |
510 | if ($payload_len > $max_payload_size) || ($payload_len < 0); | |
511 | ||
512 | return if $len < ($offset + 4 + $payload_len); | |
513 | ||
514 | my $data = substr($hdl->{rbuf}, 0, $len, ''); # now consume data | |
515 | ||
516 | my @mask = (unpack('C', substr($data, $offset+0, 1)), | |
517 | unpack('C', substr($data, $offset+1, 1)), | |
518 | unpack('C', substr($data, $offset+2, 1)), | |
519 | unpack('C', substr($data, $offset+3, 1))); | |
520 | ||
521 | $offset += 4; | |
522 | ||
523 | my $payload = substr($data, $offset, $payload_len); | |
524 | ||
525 | for (my $i = 0; $i < $payload_len; $i++) { | |
526 | my $d = unpack('C', substr($payload, $i, 1)); | |
527 | my $n = $d ^ $mask[$i % 4]; | |
528 | substr($payload, $i, 1, pack('C', $n)); | |
529 | } | |
530 | ||
531 | $payload = decode_base64($payload) if !$binary; | |
532 | ||
533 | if ($opcode == 1 || $opcode == 2) { | |
534 | $reqstate->{proxyhdl}->push_write($payload) if $reqstate->{proxyhdl}; | |
535 | } elsif ($opcode == 8) { | |
536 | print "websocket received close\n" if $self->{debug}; | |
537 | if ($reqstate->{proxyhdl}) { | |
538 | $reqstate->{proxyhdl}->push_write($payload); | |
539 | $reqstate->{proxyhdl}->push_shutdown(); | |
540 | } | |
541 | $hdl->push_shutdown(); | |
542 | } else { | |
543 | die "received unhandled websocket opcode $opcode\n"; | |
544 | } | |
545 | }; | |
546 | ||
547 | my $proto = $reqstate->{proto} ? $reqstate->{proto}->{str} : 'HTTP/1.1'; | |
548 | ||
549 | $reqstate->{proxyhdl}->timeout(0); | |
550 | $reqstate->{proxyhdl}->on_read($proxyhdlreader); | |
551 | $reqstate->{hdl}->on_read($hdlreader); | |
552 | ||
553 | # todo: use stop_read/start_read if write buffer grows to much | |
554 | ||
555 | my $res = "$proto 101 Switching Protocols\015\012" . | |
556 | "Upgrade: websocket\015\012" . | |
557 | "Connection: upgrade\015\012" . | |
558 | "Sec-WebSocket-Accept: $wsaccept\015\012" . | |
559 | "Sec-WebSocket-Protocol: $wsproto\015\012" . | |
560 | "\015\012"; | |
561 | ||
562 | print $res if $self->{debug}; | |
563 | ||
564 | $reqstate->{hdl}->push_write($res); | |
565 | ||
566 | # log early | |
567 | $reqstate->{log}->{code} = 101; | |
568 | $self->log_request($reqstate); | |
569 | }; | |
570 | ||
571 | }; | |
572 | if (my $err = $@) { | |
573 | warn $err; | |
574 | $self->log_aborted_request($reqstate, $err); | |
575 | $self->client_do_disconnect($reqstate); | |
576 | } | |
577 | } | |
578 | ||
579 | sub proxy_request { | |
580 | my ($self, $reqstate, $clientip, $host, $method, $uri, $ticket, $token, $params) = @_; | |
581 | ||
582 | eval { | |
583 | my $target; | |
584 | my $keep_alive = 1; | |
585 | if ($host eq 'localhost') { | |
586 | $target = "http://$host:85$uri"; | |
587 | # keep alive for localhost is not worth (connection setup is about 0.2ms) | |
588 | $keep_alive = 0; | |
589 | } elsif (Net::IP::ip_is_ipv6($host)) { | |
590 | $target = "https://[$host]:8006$uri"; | |
591 | } else { | |
592 | $target = "https://$host:8006$uri"; | |
593 | } | |
594 | ||
595 | my $headers = { | |
596 | PVEDisableProxy => 'true', | |
597 | PVEClientIP => $clientip, | |
598 | }; | |
599 | ||
600 | $headers->{'cookie'} = PVE::REST::create_auth_cookie($ticket) if $ticket; | |
601 | $headers->{'CSRFPreventionToken'} = $token if $token; | |
602 | $headers->{'Accept-Encoding'} = 'gzip' if $reqstate->{accept_gzip}; | |
603 | ||
604 | my $content; | |
605 | ||
606 | if ($method eq 'POST' || $method eq 'PUT') { | |
607 | $headers->{'Content-Type'} = 'application/x-www-form-urlencoded'; | |
608 | # use URI object to format application/x-www-form-urlencoded content. | |
609 | my $url = URI->new('http:'); | |
610 | $url->query_form(%$params); | |
611 | $content = $url->query; | |
612 | if (defined($content)) { | |
613 | $headers->{'Content-Length'} = length($content); | |
614 | } | |
615 | } | |
616 | ||
617 | my $w; $w = http_request( | |
618 | $method => $target, | |
619 | headers => $headers, | |
620 | timeout => 30, | |
621 | recurse => 0, | |
622 | proxy => undef, # avoid use of $ENV{HTTP_PROXY} | |
623 | keepalive => $keep_alive, | |
624 | body => $content, | |
625 | tls_ctx => $self->{tls_ctx}, | |
626 | sub { | |
627 | my ($body, $hdr) = @_; | |
628 | ||
629 | undef $w; | |
630 | ||
631 | if (!$reqstate->{hdl}) { | |
632 | warn "proxy detected vanished client connection\n"; | |
633 | return; | |
634 | } | |
635 | ||
636 | eval { | |
637 | my $code = delete $hdr->{Status}; | |
638 | my $msg = delete $hdr->{Reason}; | |
639 | delete $hdr->{URL}; | |
640 | delete $hdr->{HTTPVersion}; | |
641 | my $header = HTTP::Headers->new(%$hdr); | |
642 | if (my $location = $header->header('Location')) { | |
643 | $location =~ s|^http://localhost:85||; | |
644 | $header->header(Location => $location); | |
645 | } | |
646 | my $resp = HTTP::Response->new($code, $msg, $header, $body); | |
647 | # Note: disable compression, because body is already compressed | |
648 | $self->response($reqstate, $resp, undef, 1); | |
649 | }; | |
650 | warn $@ if $@; | |
651 | }); | |
652 | }; | |
653 | warn $@ if $@; | |
654 | } | |
655 | ||
656 | # return arrays as \0 separated strings (like CGI.pm) | |
657 | sub decode_urlencoded { | |
658 | my ($data) = @_; | |
659 | ||
660 | my $res = {}; | |
661 | ||
662 | return $res if !$data; | |
663 | ||
664 | foreach my $kv (split(/[\&\;]/, $data)) { | |
665 | my ($k, $v) = split(/=/, $kv); | |
666 | $k =~s/\+/ /g; | |
667 | $k =~ s/%([0-9a-fA-F][0-9a-fA-F])/chr(hex($1))/eg; | |
668 | $v =~s/\+/ /g; | |
669 | $v =~ s/%([0-9a-fA-F][0-9a-fA-F])/chr(hex($1))/eg; | |
670 | ||
671 | if (defined(my $old = $res->{$k})) { | |
672 | $res->{$k} = "$old\0$v"; | |
673 | } else { | |
674 | $res->{$k} = $v; | |
675 | } | |
676 | } | |
677 | return $res; | |
678 | } | |
679 | ||
680 | sub extract_params { | |
681 | my ($r, $method) = @_; | |
682 | ||
683 | my $params = {}; | |
684 | ||
685 | if ($method eq 'PUT' || $method eq 'POST') { | |
686 | $params = decode_urlencoded($r->content); | |
687 | } | |
688 | ||
689 | my $query_params = decode_urlencoded($r->url->query()); | |
690 | ||
691 | foreach my $k (keys %{$query_params}) { | |
692 | $params->{$k} = $query_params->{$k}; | |
693 | } | |
694 | ||
695 | return PVE::Tools::decode_utf8_parameters($params); | |
696 | } | |
697 | ||
698 | sub handle_api2_request { | |
699 | my ($self, $reqstate, $auth, $method, $path, $upload_state) = @_; | |
700 | ||
701 | eval { | |
702 | my $r = $reqstate->{request}; | |
703 | ||
704 | my ($rel_uri, $format) = split_abs_uri($path); | |
705 | ||
706 | my $formatter = get_formatter($format); | |
707 | ||
708 | if (!defined($formatter)) { | |
709 | $self->error($reqstate, HTTP_NOT_IMPLEMENTED, "no such uri $rel_uri, $format"); | |
710 | return; | |
711 | } | |
712 | ||
713 | #print Dumper($upload_state) if $upload_state; | |
714 | ||
715 | my $rpcenv = $self->{rpcenv}; | |
716 | ||
717 | my $params; | |
718 | ||
719 | if ($upload_state) { | |
720 | $params = $upload_state->{params}; | |
721 | } else { | |
722 | $params = extract_params($r, $method); | |
723 | } | |
724 | ||
725 | delete $params->{_dc}; # remove disable cache parameter | |
726 | ||
727 | my $clientip = $reqstate->{peer_host}; | |
728 | ||
729 | $rpcenv->init_request(); | |
730 | ||
731 | my $res = PVE::REST::rest_handler($rpcenv, $clientip, $method, $rel_uri, $auth, $params); | |
732 | ||
733 | AnyEvent->now_update(); # in case somebody called sleep() | |
734 | ||
735 | $rpcenv->set_user(undef); # clear after request | |
736 | ||
737 | my $upgrade = $r->header('upgrade'); | |
738 | $upgrade = lc($upgrade) if $upgrade; | |
739 | ||
740 | if (my $host = $res->{proxy}) { | |
741 | ||
742 | if ($self->{trusted_env}) { | |
743 | $self->error($reqstate, HTTP_INTERNAL_SERVER_ERROR, "proxy not allowed"); | |
744 | return; | |
745 | } | |
746 | ||
747 | if ($host ne 'localhost' && $r->header('PVEDisableProxy')) { | |
748 | $self->error($reqstate, HTTP_INTERNAL_SERVER_ERROR, "proxy loop detected"); | |
749 | return; | |
750 | } | |
751 | ||
752 | $res->{proxy_params}->{tmpfilename} = $reqstate->{tmpfilename} if $upload_state; | |
753 | ||
754 | $self->proxy_request($reqstate, $clientip, $host, $method, | |
755 | $r->uri, $auth->{ticket}, $auth->{token}, $res->{proxy_params}); | |
756 | return; | |
757 | ||
758 | } elsif ($upgrade && ($method eq 'GET') && ($path =~ m|websocket$|)) { | |
759 | die "unable to upgrade to protocol '$upgrade'\n" if !$upgrade || ($upgrade ne 'websocket'); | |
760 | my $wsver = $r->header('sec-websocket-version'); | |
761 | die "unsupported websocket-version '$wsver'\n" if !$wsver || ($wsver ne '13'); | |
762 | my $wsproto_str = $r->header('sec-websocket-protocol'); | |
763 | die "missing websocket-protocol header" if !$wsproto_str; | |
764 | my $wsproto; | |
765 | foreach my $p (PVE::Tools::split_list($wsproto_str)) { | |
766 | $wsproto = $p if !$wsproto && $p eq 'base64'; | |
767 | $wsproto = $p if $p eq 'binary'; | |
768 | } | |
769 | die "unsupported websocket-protocol protocol '$wsproto_str'\n" if !$wsproto; | |
770 | my $wskey = $r->header('sec-websocket-key'); | |
771 | die "missing websocket-key\n" if !$wskey; | |
772 | # Note: Digest::SHA::sha1_base64 has wrong padding | |
773 | my $wsaccept = Digest::SHA::sha1_base64("${wskey}258EAFA5-E914-47DA-95CA-C5AB0DC85B11") . "="; | |
774 | if ($res->{status} == HTTP_OK) { | |
775 | $self->websocket_proxy($reqstate, $wsaccept, $wsproto, $res->{data}); | |
776 | return; | |
777 | } | |
778 | } | |
779 | ||
780 | my $delay = 0; | |
781 | if ($res->{status} == HTTP_UNAUTHORIZED) { | |
782 | # always delay unauthorized calls by 3 seconds | |
783 | $delay = 3 - tv_interval($reqstate->{starttime}); | |
784 | $delay = 0 if $delay < 0; | |
785 | } | |
786 | ||
787 | if ($res->{info} && $res->{info}->{formatter}) { | |
788 | if (defined(my $func = $res->{info}->{formatter}->{$format})) { | |
789 | $formatter = $func; | |
790 | } | |
791 | } | |
792 | ||
793 | my ($raw, $ct, $nocomp) = &$formatter($res, $res->{data}, $params, $path, $auth); | |
794 | ||
795 | my $resp; | |
796 | if (ref($raw) && (ref($raw) eq 'HTTP::Response')) { | |
797 | $resp = $raw; | |
798 | } else { | |
799 | $resp = HTTP::Response->new($res->{status}, $res->{message}); | |
800 | $resp->header("Content-Type" => $ct); | |
801 | $resp->content($raw); | |
802 | } | |
803 | $self->response($reqstate, $resp, undef, $nocomp, $delay); | |
804 | }; | |
805 | if (my $err = $@) { | |
806 | $self->error($reqstate, 501, $err); | |
807 | } | |
808 | } | |
809 | ||
810 | sub handle_spice_proxy_request { | |
811 | my ($self, $reqstate, $connect_str, $vmid, $node, $spiceport) = @_; | |
812 | ||
813 | eval { | |
814 | ||
815 | die "Port $spiceport is not allowed" if ($spiceport < 61000 || $spiceport > 61099); | |
816 | ||
817 | my $rpcenv = $self->{rpcenv}; | |
818 | $rpcenv->init_request(); | |
819 | ||
820 | my $clientip = $reqstate->{peer_host}; | |
821 | my $r = $reqstate->{request}; | |
822 | ||
823 | my $remip; | |
824 | ||
825 | if ($node ne 'localhost' && PVE::INotify::nodename() !~ m/^$node$/i) { | |
826 | $remip = PVE::Cluster::remote_node_ip($node); | |
827 | die "unable to get remote IP address for node '$node'\n" if !$remip; | |
828 | print "REMOTE CONNECT $vmid, $remip, $connect_str\n" if $self->{debug}; | |
829 | } else { | |
830 | print "$$: CONNECT $vmid, $node, $spiceport\n" if $self->{debug}; | |
831 | } | |
832 | ||
833 | if ($remip && $r->header('PVEDisableProxy')) { | |
834 | $self->error($reqstate, HTTP_INTERNAL_SERVER_ERROR, "proxy loop detected"); | |
835 | return; | |
836 | } | |
837 | ||
838 | $reqstate->{hdl}->timeout(0); | |
839 | $reqstate->{hdl}->wbuf_max(64*10*1024); | |
840 | ||
841 | my $remhost = $remip ? $remip : "localhost"; | |
842 | my $remport = $remip ? 3128 : $spiceport; | |
843 | ||
844 | tcp_connect $remhost, $remport, sub { | |
845 | my ($fh) = @_ | |
846 | or die "connect to '$remhost:$remport' failed: $!"; | |
847 | ||
848 | print "$$: CONNECTed to '$remhost:$remport'\n" if $self->{debug}; | |
849 | $reqstate->{proxyhdl} = AnyEvent::Handle->new( | |
850 | fh => $fh, | |
851 | rbuf_max => 64*1024, | |
852 | wbuf_max => 64*10*1024, | |
853 | timeout => 5, | |
854 | on_eof => sub { | |
855 | my ($hdl) = @_; | |
856 | eval { | |
857 | $self->log_aborted_request($reqstate); | |
858 | $self->client_do_disconnect($reqstate); | |
859 | }; | |
860 | if (my $err = $@) { syslog('err', $err); } | |
861 | }, | |
862 | on_error => sub { | |
863 | my ($hdl, $fatal, $message) = @_; | |
864 | eval { | |
865 | $self->log_aborted_request($reqstate, $message); | |
866 | $self->client_do_disconnect($reqstate); | |
867 | }; | |
868 | if (my $err = $@) { syslog('err', "$err"); } | |
869 | }); | |
870 | ||
871 | ||
872 | my $proxyhdlreader = sub { | |
873 | my ($hdl) = @_; | |
874 | ||
875 | my $len = length($hdl->{rbuf}); | |
876 | my $data = substr($hdl->{rbuf}, 0, $len, ''); | |
877 | ||
878 | #print "READ1 $len\n"; | |
879 | $reqstate->{hdl}->push_write($data) if $reqstate->{hdl}; | |
880 | }; | |
881 | ||
882 | my $hdlreader = sub { | |
883 | my ($hdl) = @_; | |
884 | ||
885 | my $len = length($hdl->{rbuf}); | |
886 | my $data = substr($hdl->{rbuf}, 0, $len, ''); | |
887 | ||
888 | #print "READ0 $len\n"; | |
889 | $reqstate->{proxyhdl}->push_write($data) if $reqstate->{proxyhdl}; | |
890 | }; | |
891 | ||
892 | my $proto = $reqstate->{proto} ? $reqstate->{proto}->{str} : 'HTTP/1.0'; | |
893 | ||
894 | my $startproxy = sub { | |
895 | $reqstate->{proxyhdl}->timeout(0); | |
896 | $reqstate->{proxyhdl}->on_read($proxyhdlreader); | |
897 | $reqstate->{hdl}->on_read($hdlreader); | |
898 | ||
899 | # todo: use stop_read/start_read if write buffer grows to much | |
900 | ||
901 | my $res = "$proto 200 OK\015\012"; # hope this is the right answer? | |
902 | $reqstate->{hdl}->push_write($res); | |
903 | ||
904 | # log early | |
905 | $reqstate->{log}->{code} = 200; | |
906 | $self->log_request($reqstate); | |
907 | }; | |
908 | ||
909 | if ($remip) { | |
910 | my $header = "CONNECT ${connect_str} $proto\015\012" . | |
911 | "Host: ${connect_str}\015\012" . | |
912 | "Proxy-Connection: keep-alive\015\012" . | |
913 | "User-Agent: spiceproxy\015\012" . | |
914 | "PVEDisableProxy: true\015\012" . | |
915 | "PVEClientIP: $clientip\015\012" . | |
916 | "\015\012"; | |
917 | ||
918 | $reqstate->{proxyhdl}->push_write($header); | |
919 | $reqstate->{proxyhdl}->push_read(line => sub { | |
920 | my ($hdl, $line) = @_; | |
921 | ||
922 | if ($line =~ m!^$proto 200 OK$!) { | |
923 | &$startproxy(); | |
924 | } else { | |
925 | $reqstate->{hdl}->push_write($line); | |
926 | $self->client_do_disconnect($reqstate); | |
927 | } | |
928 | }); | |
929 | } else { | |
930 | &$startproxy(); | |
931 | } | |
932 | ||
933 | }; | |
934 | }; | |
935 | if (my $err = $@) { | |
936 | warn $err; | |
937 | $self->log_aborted_request($reqstate, $err); | |
938 | $self->client_do_disconnect($reqstate); | |
939 | } | |
940 | } | |
941 | ||
942 | sub handle_request { | |
943 | my ($self, $reqstate, $auth, $method, $path) = @_; | |
944 | ||
945 | eval { | |
946 | my $r = $reqstate->{request}; | |
947 | ||
948 | # disable timeout on handle (we already have all data we need) | |
949 | # we re-enable timeout in response() | |
950 | $reqstate->{hdl}->timeout(0); | |
951 | ||
952 | if ($path =~ m!$baseuri!) { | |
953 | $self->handle_api2_request($reqstate, $auth, $method, $path); | |
954 | return; | |
955 | } | |
956 | ||
957 | if ($self->{pages} && ($method eq 'GET') && (my $handler = $self->{pages}->{$path})) { | |
958 | if (ref($handler) eq 'CODE') { | |
959 | my $params = decode_urlencoded($r->url->query()); | |
960 | my ($resp, $userid) = &$handler($self, $reqstate->{request}, $params); | |
961 | $self->response($reqstate, $resp); | |
962 | } elsif (ref($handler) eq 'HASH') { | |
963 | if (my $filename = $handler->{file}) { | |
964 | my $fh = IO::File->new($filename) || | |
965 | die "unable to open file '$filename' - $!\n"; | |
966 | send_file_start($self, $reqstate, $filename); | |
967 | } else { | |
968 | die "internal error - no handler"; | |
969 | } | |
970 | } else { | |
971 | die "internal error - no handler"; | |
972 | } | |
973 | return; | |
974 | } | |
975 | ||
976 | if ($self->{dirs} && ($method eq 'GET')) { | |
977 | # we only allow simple names | |
978 | if ($path =~ m!^(/\S+/)([a-zA-Z0-9\-\_\.]+)$!) { | |
979 | my ($subdir, $file) = ($1, $2); | |
980 | if (my $dir = $self->{dirs}->{$subdir}) { | |
981 | my $filename = "$dir$file"; | |
982 | my $fh = IO::File->new($filename) || | |
983 | die "unable to open file '$filename' - $!\n"; | |
984 | send_file_start($self, $reqstate, $filename); | |
985 | return; | |
986 | } | |
987 | } | |
988 | } | |
989 | ||
990 | die "no such file '$path'"; | |
991 | }; | |
992 | if (my $err = $@) { | |
993 | $self->error($reqstate, 501, $err); | |
994 | } | |
995 | } | |
996 | ||
997 | sub file_upload_multipart { | |
998 | my ($self, $reqstate, $auth, $method, $path, $rstate) = @_; | |
999 | ||
1000 | eval { | |
1001 | my $boundary = $rstate->{boundary}; | |
1002 | my $hdl = $reqstate->{hdl}; | |
1003 | ||
1004 | my $startlen = length($hdl->{rbuf}); | |
1005 | ||
1006 | if ($rstate->{phase} == 0) { # skip everything until start | |
1007 | if ($hdl->{rbuf} =~ s/^.*?--\Q$boundary\E \015?\012 | |
1008 | ((?:[^\015]+\015\012)* ) \015?\012//xs) { | |
1009 | my $header = $1; | |
1010 | my ($ct, $disp, $name, $filename); | |
1011 | foreach my $line (split(/\015?\012/, $header)) { | |
1012 | # assume we have single line headers | |
1013 | if ($line =~ m/^Content-Type\s*:\s*(.*)/i) { | |
1014 | $ct = parse_content_type($1); | |
1015 | } elsif ($line =~ m/^Content-Disposition\s*:\s*(.*)/i) { | |
1016 | ($disp, $name, $filename) = parse_content_disposition($1); | |
1017 | } | |
1018 | } | |
1019 | ||
1020 | if (!($disp && $disp eq 'form-data' && $name)) { | |
1021 | syslog('err', "wrong content disposition in multipart - abort upload"); | |
1022 | $rstate->{phase} = -1; | |
1023 | } else { | |
1024 | ||
1025 | $rstate->{fieldname} = $name; | |
1026 | ||
1027 | if ($filename) { | |
1028 | if ($name eq 'filename') { | |
1029 | # found file upload data | |
1030 | $rstate->{phase} = 1; | |
1031 | $rstate->{filename} = $filename; | |
1032 | } else { | |
1033 | syslog('err', "wrong field name for file upload - abort upload"); | |
1034 | $rstate->{phase} = -1; | |
1035 | } | |
1036 | } else { | |
1037 | # found form data for field $name | |
1038 | $rstate->{phase} = 2; | |
1039 | } | |
1040 | } | |
1041 | } else { | |
1042 | my $len = length($hdl->{rbuf}); | |
1043 | substr($hdl->{rbuf}, 0, $len - $rstate->{maxheader}, '') | |
1044 | if $len > $rstate->{maxheader}; # skip garbage | |
1045 | } | |
1046 | } elsif ($rstate->{phase} == 1) { # inside file - dump until end marker | |
1047 | if ($hdl->{rbuf} =~ s/^(.*?)\015?\012(--\Q$boundary\E(--)? \015?\012(.*))$/$2/xs) { | |
1048 | my ($rest, $eof) = ($1, $3); | |
1049 | my $len = length($rest); | |
1050 | die "write to temporary file failed - $!" | |
1051 | if syswrite($rstate->{outfh}, $rest) != $len; | |
1052 | $rstate->{ctx}->add($rest); | |
1053 | $rstate->{params}->{filename} = $rstate->{filename}; | |
1054 | $rstate->{md5sum} = $rstate->{ctx}->hexdigest; | |
1055 | $rstate->{bytes} += $len; | |
1056 | $rstate->{phase} = $eof ? 100 : 0; | |
1057 | } else { | |
1058 | my $len = length($hdl->{rbuf}); | |
1059 | my $wlen = $len - $rstate->{boundlen}; | |
1060 | if ($wlen > 0) { | |
1061 | my $data = substr($hdl->{rbuf}, 0, $wlen, ''); | |
1062 | die "write to temporary file failed - $!" | |
1063 | if syswrite($rstate->{outfh}, $data) != $wlen; | |
1064 | $rstate->{bytes} += $wlen; | |
1065 | $rstate->{ctx}->add($data); | |
1066 | } | |
1067 | } | |
1068 | } elsif ($rstate->{phase} == 2) { # inside normal field | |
1069 | ||
1070 | if ($hdl->{rbuf} =~ s/^(.*?)\015?\012(--\Q$boundary\E(--)? \015?\012(.*))$/$2/xs) { | |
1071 | my ($rest, $eof) = ($1, $3); | |
1072 | my $len = length($rest); | |
1073 | $rstate->{post_size} += $len; | |
1074 | if ($rstate->{post_size} < $limit_max_post) { | |
1075 | $rstate->{params}->{$rstate->{fieldname}} = $rest; | |
1076 | $rstate->{phase} = $eof ? 100 : 0; | |
1077 | } else { | |
1078 | syslog('err', "form data to large - abort upload"); | |
1079 | $rstate->{phase} = -1; # skip | |
1080 | } | |
1081 | } | |
1082 | } else { # skip | |
1083 | my $len = length($hdl->{rbuf}); | |
1084 | substr($hdl->{rbuf}, 0, $len, ''); # empty rbuf | |
1085 | } | |
1086 | ||
1087 | $rstate->{read} += ($startlen - length($hdl->{rbuf})); | |
1088 | ||
1089 | if (!$rstate->{done} && ($rstate->{read} + length($hdl->{rbuf})) >= $rstate->{size}) { | |
1090 | $rstate->{done} = 1; # make sure we dont get called twice | |
1091 | if ($rstate->{phase} < 0 || !$rstate->{md5sum}) { | |
1092 | die "upload failed\n"; | |
1093 | } else { | |
1094 | my $elapsed = tv_interval($rstate->{starttime}); | |
1095 | ||
1096 | my $rate = int($rstate->{bytes}/($elapsed*1024*1024)); | |
1097 | syslog('info', "multipart upload complete " . | |
1098 | "(size: %d time: %ds rate: %.2fMiB/s md5sum: $rstate->{md5sum})", | |
1099 | $rstate->{bytes}, $elapsed, $rate); | |
1100 | $self->handle_api2_request($reqstate, $auth, $method, $path, $rstate); | |
1101 | } | |
1102 | } | |
1103 | }; | |
1104 | if (my $err = $@) { | |
1105 | syslog('err', $err); | |
1106 | $self->error($reqstate, 501, $err); | |
1107 | } | |
1108 | } | |
1109 | ||
1110 | sub parse_content_type { | |
1111 | my ($ctype) = @_; | |
1112 | ||
1113 | my ($ct, @params) = split(/\s*[;,]\s*/o, $ctype); | |
1114 | ||
1115 | foreach my $v (@params) { | |
1116 | if ($v =~ m/^\s*boundary\s*=\s*(\S+?)\s*$/o) { | |
1117 | return wantarray ? ($ct, $1) : $ct; | |
1118 | } | |
1119 | } | |
1120 | ||
1121 | return wantarray ? ($ct) : $ct; | |
1122 | } | |
1123 | ||
1124 | sub parse_content_disposition { | |
1125 | my ($line) = @_; | |
1126 | ||
1127 | my ($disp, @params) = split(/\s*[;,]\s*/o, $line); | |
1128 | my $name; | |
1129 | my $filename; | |
1130 | ||
1131 | foreach my $v (@params) { | |
1132 | if ($v =~ m/^\s*name\s*=\s*(\S+?)\s*$/o) { | |
1133 | $name = $1; | |
1134 | $name =~ s/^"(.*)"$/$1/; | |
1135 | } elsif ($v =~ m/^\s*filename\s*=\s*(.+?)\s*$/o) { | |
1136 | $filename = $1; | |
1137 | $filename =~ s/^"(.*)"$/$1/; | |
1138 | } | |
1139 | } | |
1140 | ||
1141 | return wantarray ? ($disp, $name, $filename) : $disp; | |
1142 | } | |
1143 | ||
1144 | my $tmpfile_seq_no = 0; | |
1145 | ||
1146 | sub get_upload_filename { | |
1147 | # choose unpredictable tmpfile name | |
1148 | ||
1149 | $tmpfile_seq_no++; | |
1150 | return "/var/tmp/pveupload-" . Digest::MD5::md5_hex($tmpfile_seq_no . time() . $$); | |
1151 | } | |
1152 | ||
1153 | sub unshift_read_header { | |
1154 | my ($self, $reqstate, $state) = @_; | |
1155 | ||
1156 | $state = { size => 0, count => 0 } if !$state; | |
1157 | ||
1158 | $reqstate->{hdl}->unshift_read(line => sub { | |
1159 | my ($hdl, $line) = @_; | |
1160 | ||
1161 | eval { | |
1162 | # print "$$: got header: $line\n" if $self->{debug}; | |
1163 | ||
1164 | die "to many http header lines\n" if ++$state->{count} >= $limit_max_headers; | |
1165 | die "http header too large\n" if ($state->{size} += length($line)) >= $limit_max_header_size; | |
1166 | ||
1167 | my $r = $reqstate->{request}; | |
1168 | if ($line eq '') { | |
1169 | ||
1170 | my $path = uri_unescape($r->uri->path()); | |
1171 | my $method = $r->method(); | |
1172 | ||
1173 | $r->push_header($state->{key}, $state->{val}) | |
1174 | if $state->{key}; | |
1175 | ||
1176 | if (!$known_methods->{$method}) { | |
1177 | my $resp = HTTP::Response->new(HTTP_NOT_IMPLEMENTED, "method '$method' not available"); | |
1178 | $self->response($reqstate, $resp); | |
1179 | return; | |
1180 | } | |
1181 | ||
1182 | my $conn = $r->header('Connection'); | |
1183 | my $accept_enc = $r->header('Accept-Encoding'); | |
1184 | $reqstate->{accept_gzip} = ($accept_enc && $accept_enc =~ m/gzip/) ? 1 : 0; | |
1185 | ||
1186 | if ($conn) { | |
1187 | $reqstate->{keep_alive} = 0 if $conn =~ m/close/oi; | |
1188 | } else { | |
1189 | if ($reqstate->{proto}->{ver} < 1001) { | |
1190 | $reqstate->{keep_alive} = 0; | |
1191 | } | |
1192 | } | |
1193 | ||
1194 | my $te = $r->header('Transfer-Encoding'); | |
1195 | if ($te && lc($te) eq 'chunked') { | |
1196 | # Handle chunked transfer encoding | |
1197 | $self->error($reqstate, 501, "chunked transfer encoding not supported"); | |
1198 | return; | |
1199 | } elsif ($te) { | |
1200 | $self->error($reqstate, 501, "Unknown transfer encoding '$te'"); | |
1201 | return; | |
1202 | } | |
1203 | ||
1204 | my $pveclientip = $r->header('PVEClientIP'); | |
1205 | ||
1206 | # fixme: how can we make PVEClientIP header trusted? | |
1207 | if ($self->{trusted_env} && $pveclientip) { | |
1208 | $reqstate->{peer_host} = $pveclientip; | |
1209 | } else { | |
1210 | $r->header('PVEClientIP', $reqstate->{peer_host}); | |
1211 | } | |
1212 | ||
1213 | my $len = $r->header('Content-Length'); | |
1214 | ||
1215 | # header processing complete - authenticate now | |
1216 | ||
1217 | my $auth = {}; | |
1218 | if ($self->{spiceproxy}) { | |
1219 | my $connect_str = $r->header('Host'); | |
1220 | my ($vmid, $node, $port) = PVE::AccessControl::verify_spice_connect_url($connect_str); | |
1221 | if (!(defined($vmid) && $node && $port)) { | |
1222 | $self->error($reqstate, HTTP_UNAUTHORIZED, "invalid ticket"); | |
1223 | return; | |
1224 | } | |
1225 | $self->handle_spice_proxy_request($reqstate, $connect_str, $vmid, $node, $port); | |
1226 | return; | |
1227 | } elsif ($path =~ m!$baseuri!) { | |
1228 | my $token = $r->header('CSRFPreventionToken'); | |
1229 | my $cookie = $r->header('Cookie'); | |
1230 | my $ticket = PVE::REST::extract_auth_cookie($cookie); | |
1231 | ||
1232 | my ($rel_uri, $format) = split_abs_uri($path); | |
1233 | if (!$format) { | |
1234 | $self->error($reqstate, HTTP_NOT_IMPLEMENTED, "no such uri"); | |
1235 | return; | |
1236 | } | |
1237 | ||
1238 | eval { | |
1239 | $auth = PVE::REST::auth_handler($self->{rpcenv}, $reqstate->{peer_host}, $method, | |
1240 | $rel_uri, $ticket, $token); | |
1241 | }; | |
1242 | if (my $err = $@) { | |
1243 | # always delay unauthorized calls by 3 seconds | |
1244 | my $delay = 3; | |
1245 | if (my $formatter = get_login_formatter($format)) { | |
1246 | my ($raw, $ct, $nocomp) = &$formatter($path, $auth); | |
1247 | my $resp; | |
1248 | if (ref($raw) && (ref($raw) eq 'HTTP::Response')) { | |
1249 | $resp = $raw; | |
1250 | } else { | |
1251 | $resp = HTTP::Response->new(HTTP_UNAUTHORIZED, "Login Required"); | |
1252 | $resp->header("Content-Type" => $ct); | |
1253 | $resp->content($raw); | |
1254 | } | |
1255 | $self->response($reqstate, $resp, undef, $nocomp, 3); | |
1256 | } else { | |
1257 | my $resp = HTTP::Response->new(HTTP_UNAUTHORIZED, $err); | |
1258 | $self->response($reqstate, $resp, undef, 0, $delay); | |
1259 | } | |
1260 | return; | |
1261 | } | |
1262 | } | |
1263 | ||
1264 | $reqstate->{log}->{userid} = $auth->{userid}; | |
1265 | ||
1266 | if ($len) { | |
1267 | ||
1268 | if (!($method eq 'PUT' || $method eq 'POST')) { | |
1269 | $self->error($reqstate, 501, "Unexpected content for method '$method'"); | |
1270 | return; | |
1271 | } | |
1272 | ||
1273 | my $ctype = $r->header('Content-Type'); | |
1274 | my ($ct, $boundary) = parse_content_type($ctype) if $ctype; | |
1275 | ||
1276 | if ($auth->{isUpload} && !$self->{trusted_env}) { | |
1277 | die "upload 'Content-Type '$ctype' not implemented\n" | |
1278 | if !($boundary && $ct && ($ct eq 'multipart/form-data')); | |
1279 | ||
1280 | die "upload without content length header not supported" if !$len; | |
1281 | ||
1282 | die "upload without content length header not supported" if !$len; | |
1283 | ||
1284 | print "start upload $path $ct $boundary\n" if $self->{debug}; | |
1285 | ||
1286 | my $tmpfilename = get_upload_filename(); | |
1287 | my $outfh = IO::File->new($tmpfilename, O_RDWR|O_CREAT|O_EXCL, 0600) || | |
1288 | die "unable to create temporary upload file '$tmpfilename'"; | |
1289 | ||
1290 | $reqstate->{keep_alive} = 0; | |
1291 | ||
1292 | my $boundlen = length($boundary) + 8; # \015?\012--$boundary--\015?\012 | |
1293 | ||
1294 | my $state = { | |
1295 | size => $len, | |
1296 | boundary => $boundary, | |
1297 | ctx => Digest::MD5->new, | |
1298 | boundlen => $boundlen, | |
1299 | maxheader => 2048 + $boundlen, # should be large enough | |
1300 | params => decode_urlencoded($r->url->query()), | |
1301 | phase => 0, | |
1302 | read => 0, | |
1303 | post_size => 0, | |
1304 | starttime => [gettimeofday], | |
1305 | outfh => $outfh, | |
1306 | }; | |
1307 | $reqstate->{tmpfilename} = $tmpfilename; | |
1308 | $reqstate->{hdl}->on_read(sub { $self->file_upload_multipart($reqstate, $auth, $method, $path, $state); }); | |
1309 | return; | |
1310 | } | |
1311 | ||
1312 | if ($len > $limit_max_post) { | |
1313 | $self->error($reqstate, 501, "for data too large"); | |
1314 | return; | |
1315 | } | |
1316 | ||
1317 | if (!$ct || $ct eq 'application/x-www-form-urlencoded') { | |
1318 | $reqstate->{hdl}->unshift_read(chunk => $len, sub { | |
1319 | my ($hdl, $data) = @_; | |
1320 | $r->content($data); | |
1321 | $self->handle_request($reqstate, $auth, $method, $path); | |
1322 | }); | |
1323 | } else { | |
1324 | $self->error($reqstate, 506, "upload 'Content-Type '$ctype' not implemented"); | |
1325 | } | |
1326 | } else { | |
1327 | $self->handle_request($reqstate, $auth, $method, $path); | |
1328 | } | |
1329 | } elsif ($line =~ /^([^:\s]+)\s*:\s*(.*)/) { | |
1330 | $r->push_header($state->{key}, $state->{val}) if $state->{key}; | |
1331 | ($state->{key}, $state->{val}) = ($1, $2); | |
1332 | $self->unshift_read_header($reqstate, $state); | |
1333 | } elsif ($line =~ /^\s+(.*)/) { | |
1334 | $state->{val} .= " $1"; | |
1335 | $self->unshift_read_header($reqstate, $state); | |
1336 | } else { | |
1337 | $self->error($reqstate, 506, "unable to parse request header"); | |
1338 | } | |
1339 | }; | |
1340 | warn $@ if $@; | |
1341 | }); | |
1342 | }; | |
1343 | ||
1344 | sub push_request_header { | |
1345 | my ($self, $reqstate) = @_; | |
1346 | ||
1347 | eval { | |
1348 | $reqstate->{hdl}->push_read(line => sub { | |
1349 | my ($hdl, $line) = @_; | |
1350 | ||
1351 | eval { | |
1352 | # print "got request header: $line\n" if $self->{debug}; | |
1353 | ||
1354 | $reqstate->{keep_alive}--; | |
1355 | ||
1356 | if ($line =~ /(\S+)\040(\S+)\040HTTP\/(\d+)\.(\d+)/o) { | |
1357 | my ($method, $url, $maj, $min) = ($1, $2, $3, $4); | |
1358 | ||
1359 | if ($maj != 1) { | |
1360 | $self->error($reqstate, 506, "http protocol version $maj.$min not supported"); | |
1361 | return; | |
1362 | } | |
1363 | ||
1364 | $self->{request_count}++; # only count valid request headers | |
1365 | if ($self->{request_count} >= $self->{max_requests}) { | |
1366 | $self->{end_loop} = 1; | |
1367 | } | |
1368 | $reqstate->{log} = { requestline => $line }; | |
1369 | $reqstate->{proto}->{str} = "HTTP/$maj.$min"; | |
1370 | $reqstate->{proto}->{maj} = $maj; | |
1371 | $reqstate->{proto}->{min} = $min; | |
1372 | $reqstate->{proto}->{ver} = $maj*1000+$min; | |
1373 | $reqstate->{request} = HTTP::Request->new($method, $url); | |
1374 | $reqstate->{starttime} = [gettimeofday], | |
1375 | ||
1376 | $self->unshift_read_header($reqstate); | |
1377 | } elsif ($line eq '') { | |
1378 | # ignore empty lines before requests (browser bugs?) | |
1379 | $self->push_request_header($reqstate); | |
1380 | } else { | |
1381 | $self->error($reqstate, 400, 'bad request'); | |
1382 | } | |
1383 | }; | |
1384 | warn $@ if $@; | |
1385 | }); | |
1386 | }; | |
1387 | warn $@ if $@; | |
1388 | } | |
1389 | ||
1390 | sub accept { | |
1391 | my ($self) = @_; | |
1392 | ||
1393 | my $clientfh; | |
1394 | ||
1395 | return if $self->{end_loop}; | |
1396 | ||
1397 | # we need to m make sure that only one process calls accept | |
1398 | while (!flock($self->{lockfh}, Fcntl::LOCK_EX())) { | |
1399 | next if $! == EINTR; | |
1400 | die "could not get lock on file '$self->{lockfile}' - $!\n"; | |
1401 | } | |
1402 | ||
1403 | my $again = 0; | |
1404 | my $errmsg; | |
1405 | eval { | |
1406 | while (!$self->{end_loop} && | |
1407 | !defined($clientfh = $self->{socket}->accept()) && | |
1408 | ($! == EINTR)) {}; | |
1409 | ||
1410 | if ($self->{end_loop}) { | |
1411 | $again = 0; | |
1412 | } else { | |
1413 | $again = ($! == EAGAIN || $! == WSAEWOULDBLOCK); | |
1414 | if (!defined($clientfh)) { | |
1415 | $errmsg = "failed to accept connection: $!\n"; | |
1416 | } | |
1417 | } | |
1418 | }; | |
1419 | warn $@ if $@; | |
1420 | ||
1421 | flock($self->{lockfh}, Fcntl::LOCK_UN()); | |
1422 | ||
1423 | if (!defined($clientfh)) { | |
1424 | return if $again; | |
1425 | die $errmsg if $errmsg; | |
1426 | } | |
1427 | ||
1428 | fh_nonblocking $clientfh, 1; | |
1429 | ||
1430 | $self->{conn_count}++; | |
1431 | ||
1432 | return $clientfh; | |
1433 | } | |
1434 | ||
1435 | sub wait_end_loop { | |
1436 | my ($self) = @_; | |
1437 | ||
1438 | $self->{end_loop} = 1; | |
1439 | ||
1440 | undef $self->{socket_watch}; | |
1441 | ||
1442 | $0 = "$0 (shutdown)" if $0 !~ m/\(shutdown\)$/; | |
1443 | ||
1444 | if ($self->{conn_count} <= 0) { | |
1445 | $self->{end_cond}->send(1); | |
1446 | return; | |
1447 | } | |
1448 | ||
1449 | # fork and exit, so that parent starts a new worker | |
1450 | if (fork()) { | |
1451 | exit(0); | |
1452 | } | |
1453 | ||
1454 | # else we need to wait until all open connections gets closed | |
1455 | my $w; $w = AnyEvent->timer (after => 1, interval => 1, cb => sub { | |
1456 | eval { | |
1457 | # todo: test for active connections instead (we can abort idle connections) | |
1458 | if ($self->{conn_count} <= 0) { | |
1459 | undef $w; | |
1460 | $self->{end_cond}->send(1); | |
1461 | } | |
1462 | }; | |
1463 | warn $@ if $@; | |
1464 | }); | |
1465 | } | |
1466 | ||
1467 | ||
1468 | sub check_host_access { | |
1469 | my ($self, $clientip) = @_; | |
1470 | ||
1471 | my $cip = Net::IP->new($clientip); | |
1472 | ||
1473 | my $match_allow = 0; | |
1474 | my $match_deny = 0; | |
1475 | ||
1476 | if ($self->{allow_from}) { | |
1477 | foreach my $t (@{$self->{allow_from}}) { | |
1478 | if ($t->overlaps($cip)) { | |
1479 | $match_allow = 1; | |
1480 | last; | |
1481 | } | |
1482 | } | |
1483 | } | |
1484 | ||
1485 | if ($self->{deny_from}) { | |
1486 | foreach my $t (@{$self->{deny_from}}) { | |
1487 | if ($t->overlaps($cip)) { | |
1488 | $match_deny = 1; | |
1489 | last; | |
1490 | } | |
1491 | } | |
1492 | } | |
1493 | ||
1494 | if ($match_allow == $match_deny) { | |
1495 | # match both allow and deny, or no match | |
1496 | return $self->{policy} && $self->{policy} eq 'allow' ? 1 : 0; | |
1497 | } | |
1498 | ||
1499 | return $match_allow; | |
1500 | } | |
1501 | ||
1502 | sub accept_connections { | |
1503 | my ($self) = @_; | |
1504 | ||
1505 | eval { | |
1506 | ||
1507 | while (my $clientfh = $self->accept()) { | |
1508 | ||
1509 | my $reqstate = { keep_alive => $self->{keep_alive} }; | |
1510 | ||
1511 | # stop keep-alive when there are many open connections | |
1512 | if ($self->{conn_count} >= $self->{max_conn_soft_limit}) { | |
1513 | $reqstate->{keep_alive} = 0; | |
1514 | } | |
1515 | ||
1516 | if (my $sin = getpeername($clientfh)) { | |
1517 | my ($pfamily, $pport, $phost) = PVE::Tools::unpack_sockaddr_in46($sin); | |
1518 | ($reqstate->{peer_port}, $reqstate->{peer_host}) = ($pport, Socket::inet_ntop($pfamily, $phost)); | |
1519 | } | |
1520 | ||
1521 | if (!$self->{trusted_env} && !$self->check_host_access($reqstate->{peer_host})) { | |
1522 | print "$$: ABORT request from $reqstate->{peer_host} - access denied\n" if $self->{debug}; | |
1523 | $reqstate->{log}->{code} = 403; | |
1524 | $self->log_request($reqstate); | |
1525 | next; | |
1526 | } | |
1527 | ||
1528 | $reqstate->{hdl} = AnyEvent::Handle->new( | |
1529 | fh => $clientfh, | |
1530 | rbuf_max => 64*1024, | |
1531 | timeout => $self->{timeout}, | |
1532 | linger => 0, # avoid problems with ssh - really needed ? | |
1533 | on_eof => sub { | |
1534 | my ($hdl) = @_; | |
1535 | eval { | |
1536 | $self->log_aborted_request($reqstate); | |
1537 | $self->client_do_disconnect($reqstate); | |
1538 | }; | |
1539 | if (my $err = $@) { syslog('err', $err); } | |
1540 | }, | |
1541 | on_error => sub { | |
1542 | my ($hdl, $fatal, $message) = @_; | |
1543 | eval { | |
1544 | $self->log_aborted_request($reqstate, $message); | |
1545 | $self->client_do_disconnect($reqstate); | |
1546 | }; | |
1547 | if (my $err = $@) { syslog('err', "$err"); } | |
1548 | }, | |
1549 | ($self->{tls_ctx} ? (tls => "accept", tls_ctx => $self->{tls_ctx}) : ())); | |
1550 | ||
1551 | print "$$: ACCEPT FH" . $clientfh->fileno() . " CONN$self->{conn_count}\n" if $self->{debug}; | |
1552 | ||
1553 | $self->push_request_header($reqstate); | |
1554 | } | |
1555 | }; | |
1556 | ||
1557 | if (my $err = $@) { | |
1558 | syslog('err', $err); | |
1559 | $self->{end_loop} = 1; | |
1560 | } | |
1561 | ||
1562 | $self->wait_end_loop() if $self->{end_loop}; | |
1563 | } | |
1564 | ||
1565 | # Note: We can't open log file in non-blocking mode and use AnyEvent::Handle, | |
1566 | # because we write from multiple processes, and that would arbitrarily mix output | |
1567 | # of all processes. | |
1568 | sub open_access_log { | |
1569 | my ($self, $filename) = @_; | |
1570 | ||
1571 | my $old_mask = umask(0137);; | |
1572 | my $logfh = IO::File->new($filename, ">>") || | |
1573 | die "unable to open log file '$filename' - $!\n"; | |
1574 | umask($old_mask); | |
1575 | ||
1576 | $logfh->autoflush(1); | |
1577 | ||
1578 | $self->{logfh} = $logfh; | |
1579 | } | |
1580 | ||
1581 | sub write_log { | |
1582 | my ($self, $data) = @_; | |
1583 | ||
1584 | return if !defined($self->{logfh}) || !$data; | |
1585 | ||
1586 | my $res = $self->{logfh}->print($data); | |
1587 | ||
1588 | if (!$res) { | |
1589 | delete $self->{logfh}; | |
1590 | syslog('err', "error writing access log"); | |
1591 | $self->{end_loop} = 1; # terminate asap | |
1592 | } | |
1593 | } | |
1594 | ||
1595 | sub atfork_handler { | |
1596 | my ($self) = @_; | |
1597 | ||
1598 | eval { | |
1599 | # something else do to ? | |
1600 | close($self->{socket}); | |
1601 | }; | |
1602 | warn $@ if $@; | |
1603 | } | |
1604 | ||
1605 | sub new { | |
1606 | my ($this, %args) = @_; | |
1607 | ||
1608 | my $class = ref($this) || $this; | |
1609 | ||
1610 | foreach my $req (qw(base_handler_class socket lockfh lockfile)) { | |
1611 | die "misssing required argument '$req'" if !defined($args{$req}); | |
1612 | } | |
1613 | ||
1614 | my $self = bless { %args }, $class; | |
1615 | ||
1616 | PVE::REST::set_base_handler_class($self->{base_handler_class}); | |
1617 | ||
1618 | # init inotify | |
1619 | PVE::INotify::inotify_init(); | |
1620 | ||
1621 | $self->{rpcenv} = PVE::RPCEnvironment->init( | |
1622 | $self->{trusted_env} ? 'priv' : 'pub', atfork => sub { $self-> atfork_handler() }); | |
1623 | ||
1624 | fh_nonblocking($self->{socket}, 1); | |
1625 | ||
1626 | $self->{end_loop} = 0; | |
1627 | $self->{conn_count} = 0; | |
1628 | $self->{request_count} = 0; | |
1629 | $self->{timeout} = 5 if !$self->{timeout}; | |
1630 | $self->{keep_alive} = 0 if !defined($self->{keep_alive}); | |
1631 | $self->{max_conn} = 800 if !$self->{max_conn}; | |
1632 | $self->{max_requests} = 8000 if !$self->{max_requests}; | |
1633 | ||
1634 | $self->{policy} = 'allow' if !$self->{policy}; | |
1635 | ||
1636 | $self->{end_cond} = AnyEvent->condvar; | |
1637 | ||
1638 | if ($self->{ssl}) { | |
1639 | $self->{tls_ctx} = AnyEvent::TLS->new(%{$self->{ssl}}); | |
1640 | Net::SSLeay::CTX_set_options($self->{tls_ctx}->{ctx}, &Net::SSLeay::OP_NO_COMPRESSION); | |
1641 | } | |
1642 | ||
1643 | if ($self->{spiceproxy}) { | |
1644 | $known_methods = { CONNECT => 1 }; | |
1645 | } | |
1646 | ||
1647 | $self->open_access_log($self->{logfile}) if $self->{logfile}; | |
1648 | ||
1649 | $self->{max_conn_soft_limit} = $self->{max_conn} > 100 ? $self->{max_conn} - 20 : $self->{max_conn}; | |
1650 | ||
1651 | $self->{socket_watch} = AnyEvent->io(fh => $self->{socket}, poll => 'r', cb => sub { | |
1652 | eval { | |
1653 | if ($self->{conn_count} >= $self->{max_conn}) { | |
1654 | my $w; $w = AnyEvent->timer (after => 1, interval => 1, cb => sub { | |
1655 | if ($self->{conn_count} < $self->{max_conn}) { | |
1656 | undef $w; | |
1657 | $self->accept_connections(); | |
1658 | } | |
1659 | }); | |
1660 | } else { | |
1661 | $self->accept_connections(); | |
1662 | } | |
1663 | }; | |
1664 | warn $@ if $@; | |
1665 | }); | |
1666 | ||
1667 | $self->{term_watch} = AnyEvent->signal(signal => "TERM", cb => sub { | |
1668 | undef $self->{term_watch}; | |
1669 | $self->wait_end_loop(); | |
1670 | }); | |
1671 | ||
1672 | $self->{quit_watch} = AnyEvent->signal(signal => "QUIT", cb => sub { | |
1673 | undef $self->{quit_watch}; | |
1674 | $self->wait_end_loop(); | |
1675 | }); | |
1676 | ||
1677 | $self->{inotify_poll} = AnyEvent->timer(after => 5, interval => 5, cb => sub { | |
1678 | PVE::INotify::poll(); # read inotify events | |
1679 | }); | |
1680 | ||
1681 | return $self; | |
1682 | } | |
1683 | ||
1684 | sub run { | |
1685 | my ($self) = @_; | |
1686 | ||
1687 | $self->{end_cond}->recv; | |
1688 | } | |
1689 | ||
1690 | 1; |