/[pxelator]/lib/PXElator/httpd.pm
This is repository of my old source code which isn't updated any more. Go to git.rot13.org for current projects!
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Contents of /lib/PXElator/httpd.pm

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Revision 225 - (show annotations)
Sun Aug 16 00:03:30 2009 UTC (14 years, 8 months ago) by dpavlin
File size: 8493 byte(s)
split out wireshark as separate process from kvm

implemented fork_if_active (for sub-processes) and fork_actions
which can be run without dependencies

1 package httpd;
2
3 use warnings;
4 use strict;
5 use autodie;
6
7 =head1 httpd
8
9 Start with:
10
11 perl -Ilib/PXElator -Mhttpd -e httpd::start
12
13 =cut
14
15 use Data::Dump qw/dump/;
16 use Carp qw/confess/;
17 use File::Slurp;
18 #use JSON;
19 use IO::Socket::INET;
20 use Regexp::Common qw/net/;
21
22 sub menu {qq{
23
24 <div style="font-size: 80%; color: #888">
25 <a href=/>home</a>
26 <a href=/server>server</a>
27 <a href=/ip>ip</a>
28 <a href=/client>client</a>
29 </div>
30
31 }}
32
33 our $port = 7777;
34
35 use server;
36 our $debug = server::debug;
37 our $url = "http://$server::ip:$port";
38
39 use html;
40 our $static_pids;
41 use progress_bar;
42 use config;
43 use client;
44 use log;
45 use x11;
46 use amt;
47 use boolean;
48 use daemons;
49
50 use kvm;
51 use browser;
52 use network;
53 use ip;
54 use wireshark;
55
56 use CouchDB;
57
58 sub static {
59 my ($client,$path) = @_;
60
61 my $full = "$server::base_dir/tftp/$path";
62
63 return if ! -f $full;
64
65 if ( my $pid = fork ) {
66 # parent
67 close($client);
68 $static_pids->{$pid} = $path;
69 return 1;
70 }
71
72 my $type = 'application/octet-stream';
73 $type = 'text/html' if $path =~ m{\.htm};
74 $type = 'application/javascript' if $path =~ m{\.js};
75 $type = 'text/plain' if $path =~ m{\.txt};
76
77 my $size = -s $full || return;
78
79 print $client "HTTP/1.0 200 OK\r\nContent-Type: $type\r\nContent-Length: $size\r\nConnection: close\r\n\r\n";
80
81 open(my $fh, $full);
82
83 my $block = 1400; # try not to fragment packages (pxelinux seems to have problems with it)
84 my $buff;
85 my $pos = 0;
86
87 CouchDB::audit( 'static', { pid => $$, path => $path, type => $type, size => $size, block => $block, peerhost => $client->peerhost });
88
89 progress_bar::start;
90
91 while( my $len = read $fh, $buff, $block ) {
92 print $client $buff;
93 $client->flush;
94 $pos += $len;
95 progress_bar::tick( $path, $pos, $size );
96 }
97 close($fh);
98 close($client);
99
100 print STDERR "\n";
101
102 exit(0);
103 }
104
105 sub ok {
106 qq|HTTP/1.0 200 OK\r\nContent-Type: text/html\r\nConnection: close\r\n\r\n| . menu()
107 }
108
109 sub redirect {
110 my $to = shift;
111 $to ||= $url;
112 qq|HTTP/1.1 302 Found\r\nContent-type: text/html\r\nLocation: $to\r\n\r\n|
113 }
114
115 sub get_request {
116 my ( $client, $path, $param ) = @_;
117
118 server->refresh;
119
120 CouchDB::audit( 'request', { path => $path, param => $param, peerhost => $client->peerhost } );
121
122 if ( my $found = static( $client,$path ) ) {
123 warn "static $found" if $debug;
124 } elsif ( $path eq '/' ) {
125
126 my @rows = (
127 'debug', qq|<a href=/our/debug/| . boolean::toggle($debug) . qq|>$debug</a>|,
128 );
129
130 my $debug_proc = '';
131
132 foreach my $name ( sort keys %$daemons::pids ) {
133 my $pid = $daemons::pids->{$name} || next;
134
135 my $html;
136
137 my $proc = "/proc/$pid/status";
138
139 if ( -e $proc ) {
140 $html .= qq|<a href=/start_stop/$name>$pid</a>|;
141 if ( $debug ) {
142 $html .= qq| <a name=$pid href=#proc-$pid>?</a>| if $name->can('start');
143
144 $debug_proc
145 .= qq|<a name=proc-$pid href=#$pid>$proc</a><pre style="font-size: 10%">|
146 . read_file($proc)
147 . qq|</pre>|
148 ;
149 }
150
151 if ( $name->can('fork_if_active') ) {
152 $html .= qq| <a href=/start_stop/$name/$_>$_</a>| foreach $name->fork_if_active;
153 }
154
155 if ( $name->can('actions') ) {
156 $html .= qq| <a href=/action/$name/$_>$_</a>| foreach $name->actions;
157 }
158 } else {
159 $html .= qq|<a href=/start_stop/$name>restart</a> $pid exited| if $name->can('start');
160 if ( $name->can('fork_actions') ) {
161 $html .= qq| <a href=/start_stop/$name/$_>$_</a>| foreach $name->fork_actions;
162 }
163 }
164
165 push @rows, ( $name => $html );
166 }
167
168 my $below_table = '';
169
170 warn 'static_pids: ', dump( $static_pids ) if $debug;
171 foreach my $pid ( keys %$static_pids ) {
172 my $path = $static_pids->{$pid};
173 if ( -d "/proc/$pid" ) {
174 push @rows, ( $path => qq|<a href=/kill/static/$pid>$pid</a>| );
175 } elsif ( $param->{clean_completed_downloads} ) {
176 delete $static_pids->{$pid}
177 } else {
178 push @rows, ( $path => "$pid competed" );
179 $below_table = qq|<a href="/?clean_completed_downloads=1">clean completed downloads</a>|;
180 }
181 }
182
183 print $client ok
184 , html::table( 2, @rows )
185 , $below_table
186 , html::tabs( log::mac_changes )
187 , $debug_proc
188 ;
189
190 } elsif ( $path =~ m{^/server} ) {
191 print $client ok
192 , html::table( 2, map { ( $_, html::tt eval '$server::'.$_ ) } ( 'ip', 'netmask', 'ip_from', 'ip_to', 'domain_name', 'base_dir', 'conf' ) )
193 ;
194 } elsif ( $path =~ m!^/client(?:/$RE{net}{IPv4}{-keep})?! ) {
195 my $ip = $1 || $client->peerhost;
196
197 if ( my $new_ip = $param->{change_ip} ) {
198 client::change_ip( $ip, $new_ip );
199 $ip = $new_ip;
200 }
201
202 if ( $ip ne $server::ip ) {
203 my $hostname = client::conf( $ip, 'hostname' => $param->{hostname} );
204
205 my @table = (
206 'ip' => qq|<input type=text name=change_ip value="$ip" onChange="document.getElementById('old_ip').style.display = '';"><span id=old_ip style="display: none; color: #888;">old: $ip<span>|,
207 'hostname' => qq|<input type=text name=hostname value="$hostname">|,
208 );
209
210 my $deploy;
211
212 if ( my $mac = client::mac_from_ip( $ip ) ) {
213 $deploy = client::conf( $ip, 'deploy' => $param->{deploy} );
214 push @table, (
215 'mac' => format::mac( $mac => 'html' ),
216 'deploy' => html::select( 'deploy', $deploy, config::available )
217 );
218 $deploy = qq|<h2>PXElinux</h2>| . html::pre( config::for_ip( $ip ) );
219 }
220
221 print $client ok
222 , qq|<form method=get>|
223 , html::table( 2, @table ),
224 , qq|<input type=submit value=change></form>|
225 , $deploy
226 ;
227
228 if ( my $amt = client::conf( $ip, 'amt' ) ) {
229 print $client qq|<h2>AMT</h2>|, amt::info( $amt );
230 }
231 } else {
232
233 my $arp = {
234 map {
235 my @c = split(/\s+/,$_);
236 if ( $#c == 5 ) {
237 ( uc $c[3] => [ $c[0] , $c[5] ] )
238 } else {
239 }
240 } read_file('/proc/net/arp')
241 };
242
243 warn "# arp ",dump( $arp );
244
245 print $client ok
246 , qq|<h2>Clients on $server::ip</h2>|
247 , html::table( -5,
248 'ip', 'hostname', 'mac', 'deploy', 'arp',
249 map {
250 my $ip = $_;
251 $ip =~ s{^.+/ip/}{};
252 my $mac = client::mac_from_ip $ip;
253 my $arp = $arp->{ $mac };
254 $arp = $arp ? $arp->[1] : '';
255 $arp =~ s{$ip}{};
256 (
257 qq|<a href=/client/$ip>$ip</a>|
258 , client::conf( $ip, 'hostname' )
259 , format::mac( $mac => 'html' )
260 , html::tt( client::conf( $ip, 'deploy' ) )
261 , $arp
262 );
263 }
264 glob("$server::conf/ip/*")
265 )
266 , qq|<h2>ARP</h2>|
267 , html::table( -3, 'mac', 'dev', 'ip',
268 map {
269 my $c = $arp->{$_};
270 ( format::mac( $_ => 'html' ), $c->[1], $c->[0] )
271 } sort keys %$arp
272 )
273 ;
274 }
275 } elsif ( $path =~ m{^/ip/?(\w+)?} ) {
276 print $client ok
277 , join("\n", map { qq|<a href=/ip/$_>$_</a>| } ( qw/link addr route neigh ntable tunnel maddr mroute xfrm/ ))
278 , ip::html( $1 )
279 ;
280 } elsif ( $path =~ m{^/our/(\w+)/(\S+)} ) {
281 eval 'our $' . $1 . ' = ' . $2;
282 warn $@ if $@;
283 print $client redirect($url), qq|<big>$1 = $2</big><br>Location: <a href="$url">$url</a>|;
284 server::debug( $debug ) if $1 eq 'debug';
285 } elsif ( $path =~ m{^/start_stop/(\S+)} ) {
286 print $client redirect, daemons::start_stop($1);
287 } elsif ( $path =~ m{^/action/([^/]+)/(.+)} ) {
288 $1->$2();
289 print $client redirect;
290 } elsif ( $path =~ m{^/kill/static/(\d+)} ) {
291 print $client redirect;
292 kill 1, $1 || kill 9, $2 && warn "killed $1";
293 } else {
294 print $client "HTTP/1.0 404 $path\r\nConnection: close\r\nContent-type: text/html\r\n\r\n<big>404 $path</big>";
295 warn "404 $path";
296 }
297
298 }
299
300 sub start {
301
302 warn 'tap ', network::tap();
303
304 daemons::start_stop 'browser', $url;
305 daemons::start_stop $_ foreach ( qw/dhcpd tftpd dnsd/ );
306 daemons::start_stop 'kvm' unless $ENV{DEV}; # skip kvm statup when running on real device
307
308 my $server = IO::Socket::INET->new(
309 Proto => 'tcp',
310 LocalAddr => $server::ip,
311 LocalPort => $httpd::port,
312 Listen => SOMAXCONN,
313 Reuse => 1
314 ) || die "can't start server on $url: $!";
315
316 print "url $url\n";
317
318 while (1) {
319 my $client = $server->accept() || next; # ALARM trickle us
320 my $request = <$client>;
321
322 warn "request $request\n" if $debug;
323
324 if ($request =~ m{^GET (/.*) HTTP/1.[01]}) {
325 my $path = $1;
326 my $param;
327 if ( $path =~ s{\?(.+)}{} ) {
328 foreach my $p ( split(/[&;]/, $1) ) {
329 my ($n,$v) = split(/=/, $p, 2);
330 $param->{$n} = $v;
331 }
332 warn "param: ",dump( $param ) if $debug;
333 }
334 get_request $client, $path, $param;
335 } else {
336 print $client "HTTP/1.0 500 No method\r\nConnection: close\r\nContent-type: text/plain\r\n\r\n500 $request";
337 warn "500 $request";
338 }
339
340 print $client menu() if $client->connected;
341
342 }
343
344 die "server died";
345 }
346
347 warn "loaded";
348
349 1;

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