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

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Revision 165 - (show annotations)
Thu Aug 6 18:51:57 2009 UTC (14 years, 7 months ago) by dpavlin
File size: 7884 byte(s)
display client mac addresses
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 $pids;
33 $pids = { httpd => $$ } unless defined $pids; # keep pids on refresh
34
35 sub DESTROY {
36 warn "pids ",dump( $pids );
37 foreach ( values %$pids ) {
38 warn "kill $_";
39 kill 1,$_ || kill 9, $_;
40 }
41 }
42
43 our $port = 7777;
44
45 use server;
46 our $debug = server::debug;
47 our $url = "http://$server::ip:$port";
48
49 use html;
50 our $static_pids;
51 use progress_bar;
52 use config;
53 use client;
54 use log;
55
56 sub static {
57 my ($client,$path) = @_;
58
59 my $full = "$server::base_dir/tftp/$path";
60
61 return if ! -f $full;
62
63 if ( my $pid = fork ) {
64 # parent
65 close($client);
66 print "http static child $pid\n";
67 $static_pids->{$pid} = $path;
68 return 1;
69 }
70
71 my $type = 'application/octet-stream';
72 $type = 'text/html' if $path =~ m{\.htm};
73 $type = 'application/javascript' if $path =~ m{\.js};
74 $type = 'text/plain' if $path =~ m{\.txt};
75
76 my $size = -s $full || return;
77
78 print $client "HTTP/1.0 200 OK\r\nContent-Type: $type\r\nContent-Length: $size\r\nConnection: close\r\n\r\n";
79
80 open(my $fh, $full);
81
82 my $block = 1400; # try not to fragment packages (pxelinux seems to have problems with it)
83 my $buff;
84 my $pos = 0;
85
86 warn "static $path $type $size block: $block\n";
87
88 progress_bar::start;
89
90 while( my $len = read $fh, $buff, $block ) {
91 print $client $buff;
92 $client->flush;
93 $pos += $len;
94 progress_bar::tick( $path, $pos, $size );
95 }
96 close($fh);
97 close($client);
98
99 print STDERR "\n";
100
101 warn "exit static child";
102
103 exit(0);
104 }
105
106 use boolean;
107
108 use kvm;
109 use qemu; $pids->{qemu} = 'stopped';
110
111 $SIG{CHLD} = 'IGNORE';
112
113 sub start_stop {
114 my $daemon = shift;
115 my $pid = $pids->{$daemon} || 'not started';
116
117 warn "start_stop $daemon $pid\n";
118
119 if ( $pid =~ m{^\d+$} ) {
120 my $pstree = `pstree -p $pid`;
121 my @pids = $pstree =~ m{\((\d+)\)}g;
122 warn "pstree $pstree pids ",dump( @pids );
123 kill 1, $_ foreach reverse @pids;
124 $pids->{$daemon} = 'stopped';
125 return qq|$daemon pid $pid stopped|;
126 } else {
127 if ( $pid = fork ) {
128 # parent
129 $pids->{$daemon} = $pid;
130 warn "forked $daemon $pid\n";
131 return qq|$daemon pid $pid started|;
132 } elsif ( defined $pid ) {
133 # child
134 my $invoke = 'start';
135 $invoke = $1 if $daemon =~ s{/(.+)}{};
136 if ( $daemon =~ m{dhcpd|tftpd|dnsd} ) {
137 my $exec = "perl -I$server::base_dir/lib -I$server::base_dir/lib/PXElator -M$daemon -e ${daemon}::${invoke}";
138 warn "exec $exec";
139 exec "xterm -T $daemon -n $daemon -e $exec";
140 } else {
141 my $eval = $daemon . '::' . $invoke . '(' . ( @_ ? dump(@_) : '' ) . ')';
142 warn "eval $eval";
143 eval $eval;
144 warn "can't start $daemon: $@" if $@;
145 }
146 exit;
147 } else {
148 die "fork error $!";
149 }
150 }
151 }
152
153 my $ok = qq|HTTP/1.0 200 OK\r\nContent-Type: text/html\r\nConnection: close\r\n\r\n| . menu();
154 my $redirect = qq|HTTP/1.1 302 Found\r\nContent-type: text/html\r\nLocation: $url\r\n\r\n|;
155
156 sub get_request {
157 my ( $client, $path, $param ) = @_;
158
159 server->refresh;
160
161 warn "get_request $path ", $param ? dump( $param ) : '', "\n";
162
163 if ( my $found = static( $client,$path ) ) {
164 warn "static $found" if $debug;
165 } elsif ( $path eq '/' ) {
166
167 my @rows = (
168 'debug', qq|<a href=/our/debug/| . boolean::toggle($debug) . qq|>$debug</a>|,
169 );
170
171 my $debug_proc = '';
172
173 warn 'pids: ', dump( $pids ) if $debug;
174 foreach my $name ( sort keys %$pids ) {
175 my $pid = $pids->{$name} || next;
176
177 my $html = qq|<a href=/start_stop/$name>$pid</a>|;
178
179 my $proc = "/proc/$pid/status";
180
181 if ( -e $proc ) {
182 if ( $debug ) {
183 $html .= qq| <a name=$pid href=#proc-$pid>?</a>|;
184
185 $debug_proc
186 .= qq|<a name=proc-$pid href=#$pid>$proc</a><pre style="font-size: 10%">|
187 . read_file($proc)
188 . qq|</pre>|
189 ;
190 }
191
192 if ( $name->can('start_fork') ) {
193 $html .= qq| <a href=/start_stop/kvm/$_>$_</a>| foreach $name->start_fork;
194 }
195
196 if ( $name->can('actions') ) {
197 $html .= qq| <a href=/action/kvm/$_>$_</a>| foreach $name->actions;
198 }
199 }
200
201 push @rows, ( $name => $html );
202 }
203
204 my $below_table = '';
205
206 warn 'static_pids: ', dump( $static_pids ) if $debug;
207 foreach my $pid ( keys %$static_pids ) {
208 my $path = $static_pids->{$pid};
209 if ( -d "/proc/$pid" ) {
210 push @rows, ( $path => qq|<a href=/kill/static/$pid>$pid</a>| );
211 } elsif ( $param->{clean_completed_downloads} ) {
212 delete $static_pids->{$pid}
213 } else {
214 push @rows, ( $path => "$pid competed" );
215 $below_table = qq|<a href="/?clean_completed_downloads=1">clean completed downloads</a>|;
216 }
217 }
218
219 print $client $ok
220 , html::table( 2, @rows )
221 , $below_table
222 , html::tabs( log::mac_changes )
223 , $debug_proc
224 ;
225
226 } elsif ( $path =~ m{^/server} ) {
227 print $client $ok
228 , html::table( 2, map { ( $_, eval '$server::'.$_ ) } ( 'ip', 'netmask', 'ip_from', 'ip_to', 'domain_name', 'base_dir' ) )
229 ;
230 } elsif ( $path =~ m!^/client(?:/$RE{net}{IPv4}{-keep})?! ) {
231 my $ip = $1 || $client->peerhost;
232 if ( $ip ne $server::ip ) {
233 my $hostname = client::conf( $ip, 'hostname' => $param->{hostname} );
234 my $deploy = client::conf( $ip, 'deploy' => $param->{deploy} );
235 print $client $ok
236 , qq|<form method=get>|
237 , html::table( 2,
238 'ip' => $ip,
239 'mac' => client::mac( $ip ),
240 'hostname' => qq|<input type=text name=hostname value=$hostname>|,
241 'deploy' => html::select( 'deploy', $deploy, config::available ),
242 )
243 , qq|<input type=submit value=change></form>|
244 , qq|<h2>PXElinux $deploy</h2><pre>|
245 , config::for_ip( $ip )
246 , qq|</pre>|
247 ;
248 } else {
249 print $client $ok
250 , qq|<h2>Clients on $server::ip</h2>|
251 , qq|<ul>|
252 , join("\n",
253 map {
254 my $ip = $_;
255 $ip =~ s{^.+/ip/}{};
256 qq|<li><a href=/client/$ip>$ip</a> |, client::mac($ip), qq|</li>|;
257 }
258 glob("$server::conf/ip/*")
259 )
260 , qq|</ul>|
261 ;
262 }
263 } elsif ( $path =~ m{^/our/(\w+)/(\S+)} ) {
264 eval 'our $' . $1 . ' = ' . $2;
265 warn $@ if $@;
266 print $client $redirect, qq|<big>$1 = $2</big><br>Location: <a href="$url">$url</a>|;
267 server::debug( $debug ) if $1 eq 'debug';
268 } elsif ( $path =~ m{^/start_stop/(\S+)} ) {
269 print $client $redirect, start_stop($1);
270 } elsif ( $path =~ m{^/action/([^/]+)/(.+)} ) {
271 $1->$2();
272 print $client $redirect;
273 } elsif ( $path =~ m{^/kill/static/(\d+)} ) {
274 print $client $redirect;
275 kill 1, $1 || kill 9, $2 && warn "killed $1";
276 } else {
277 print $client "HTTP/1.0 404 $path\r\nConnection: close\r\nContent-type: text/html\r\n\r\n<big>404 $path</big>";
278 warn "404 $path";
279 }
280
281 }
282
283 use browser;
284 use network;
285
286 sub start {
287
288 warn 'tap ', network::tap();
289
290 my $server = IO::Socket::INET->new(
291 Proto => 'tcp',
292 LocalPort => $httpd::port,
293 Listen => SOMAXCONN,
294 Reuse => 1
295 ) || die "can't start server on $url: $!";
296
297 print "url $url\n";
298
299 start_stop 'browser', $url;
300 start_stop 'dhcpd';
301 start_stop 'tftpd';
302 start_stop 'dnsd';
303 start_stop 'kvm';
304
305 while (1) {
306 my $client = $server->accept() || next; # ALARM trickle us
307 my $request = <$client>;
308
309 warn "request $request\n" if $debug;
310
311 if ($request =~ m{^GET (/.*) HTTP/1.[01]}) {
312 my $path = $1;
313 my $param;
314 if ( $path =~ s{\?(.+)}{} ) {
315 foreach my $p ( split(/[&;]/, $1) ) {
316 my ($n,$v) = split(/=/, $p, 2);
317 $param->{$n} = $v;
318 }
319 warn "param: ",dump( $param ) if $debug;
320 }
321 get_request $client, $path, $param;
322 } else {
323 print $client "HTTP/1.0 500 No method\r\nConnection: close\r\nContent-type: text/plain\r\n\r\n500 $request";
324 warn "500 $request";
325 }
326
327 print $client menu() if $client->connected;
328
329 }
330
331 die "server died";
332 }
333
334 warn "loaded";
335
336 1;

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