/[pxelator]/lib/PXElator/httpd.pm
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Contents of /lib/PXElator/httpd.pm

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Revision 199 - (show annotations)
Tue Aug 11 15:13:19 2009 UTC (14 years, 7 months ago) by dpavlin
File size: 7814 byte(s)
rewrite ok and redirect headers into subs, allowing configurable url for redirect

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

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