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

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Revision 128 - (show annotations)
Mon Aug 3 19:59:08 2009 UTC (13 years, 6 months ago) by dpavlin
File size: 6760 byte(s)
added back refresh, this time in as server->refresh

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
21 our $pids;
22 $pids = { httpd => $$ } unless defined $pids; # keep pids on refresh
23
24 sub DESTROY {
25 warn "pids ",dump( $pids );
26 foreach ( values %$pids ) {
27 warn "kill $_";
28 kill 1,$_ || kill 9, $_;
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 $static_pids;
40 use progress_bar;
41
42 sub static {
43 my ($client,$path) = @_;
44
45 my $full = "$server::base_dir/tftp/$path";
46
47 return if ! -f $full;
48
49 if ( my $pid = fork ) {
50 # parent
51 close($client);
52 print "http static child $pid\n";
53 $static_pids->{$pid} = $path;
54 return 1;
55 }
56
57 my $type = 'application/octet-stream';
58 $type = 'text/html' if $path =~ m{\.htm};
59 $type = 'application/javascript' if $path =~ m{\.js};
60 $type = 'text/plain' if $path =~ m{\.txt};
61
62 my $size = -s $full || return;
63
64 print $client "HTTP/1.0 200 OK\r\nContent-Type: $type\r\nContent-Length: $size\r\nConnection: close\r\n\r\n";
65
66 open(my $fh, $full);
67
68 my $block = 1400; # try not to fragment packages (pxelinux seems to have problems with it)
69 my $buff;
70 my $pos = 0;
71
72 warn "static $path $type $size block: $block\n";
73
74 progress_bar::start;
75
76 while( my $len = read $fh, $buff, $block ) {
77 print $client $buff;
78 $client->flush;
79 $pos += $len;
80 progress_bar::tick( $path, $pos, $size );
81 }
82 close($fh);
83 close($client);
84
85 print STDERR "\n";
86
87 warn "exit static child";
88
89 exit(0);
90 }
91
92 use boolean;
93
94 use screen;
95 use kvm;
96
97 $SIG{CHLD} = 'IGNORE';
98
99 sub start_stop {
100 my $daemon = shift;
101 my $pid = $pids->{$daemon};
102
103 warn "start_stop $daemon $pid\n";
104
105 if ( $pid =~ m{^\d+$} ) {
106 my $pstree = `pstree -p $pid`;
107 my @pids = $pstree =~ m{\((\d+)\)}g;
108 warn "pstree $pstree pids ",dump( @pids );
109 kill 1, $_ foreach reverse @pids;
110 $pids->{$daemon} = 'stopped';
111 return qq|$daemon pid $pid stopped|;
112 } else {
113 if ( $pid = fork ) {
114 # parent
115 $pids->{$daemon} = $pid;
116 warn "forked $daemon $pid\n";
117 return qq|$daemon pid $pid started|;
118 } elsif ( defined $pid ) {
119 # child
120 my $invoke = 'start';
121 $invoke = $1 if $daemon =~ s{/(.+)}{};
122 my $eval = $daemon . '::' . $invoke . '(' . ( @_ ? dump(@_) : '' ) . ')';
123 warn "eval $eval";
124 eval $eval;
125 warn "can't start $daemon: $@" if $@;
126 exit;
127 } else {
128 die "fork error $!";
129 }
130 }
131 }
132
133 my $ok = qq|HTTP/1.0 200 OK\r\nContent-Type: text/html\r\nConnection: close\r\n\r\n|;
134 my $redirect = qq|HTTP/1.1 302 Found\r\nContent-type: text/html\r\nLocation: $url\r\n\r\n|;
135
136 sub get_request {
137 my ( $client, $path, $param ) = @_;
138
139 server->refresh;
140
141 warn "get_request $path ", $param ? dump( $param ) : '', "\n";
142
143 if ( my $found = static( $client,$path ) ) {
144 warn "static $found" if $debug;
145 } elsif ( $path eq '/' ) {
146
147 my $screen = $pids->{screen} ? qq|stop <tt>$pids->{screen}</tt>| : 'start';
148 my $kvm = $pids->{kvm} ? qq|stop <tt>$pids->{kvm}</tt>| :
149 $pids->{screen} ? qq|start| : qq|start screen first|;
150
151 my @rows = (
152 'ip', html::tt( $server::ip ),
153 'netmask', html::tt( $server::netmask ),
154
155 'debug', qq|<a href=/our/debug/| . boolean::toggle($debug) . qq|>$debug</a>|,
156 );
157
158 my $debug_proc = '';
159
160 warn 'pids: ', dump( $pids ) if $debug;
161 foreach my $name ( sort keys %$pids ) {
162 my $pid = $pids->{$name} || next;
163
164 my $html = qq|<a href=/start_stop/$name>$pid</a>|;
165
166 my $proc = "/proc/$pid/status";
167
168 if ( -e $proc ) {
169 if ( $debug ) {
170 $html .= qq| <a name=$pid href=#proc-$pid>?</a>|;
171
172 $debug_proc
173 .= qq|<a name=proc-$pid href=#$pid>$proc</a><pre style="font-size: 10%">|
174 . read_file($proc)
175 . qq|</pre>|
176 ;
177 }
178
179 if ( $name->can('start_fork') ) {
180 $html .= qq| <a href=/start_stop/kvm/$_>$_</a>| foreach $name->start_fork;
181 }
182
183 if ( $name->can('actions') ) {
184 $html .= qq| <a href=/action/kvm/$_>$_</a>| foreach $name->actions;
185 }
186 }
187
188 push @rows, ( $name => $html );
189 }
190
191 my $below_table = '';
192
193 warn 'static_pids: ', dump( $static_pids ) if $debug;
194 foreach my $pid ( keys %$static_pids ) {
195 my $path = $static_pids->{$pid};
196 if ( -d "/proc/$pid" ) {
197 push @rows, ( $path => qq|<a href=/kill/static/$pid>$pid</a>| );
198 } elsif ( $param->{clean_completed_downloads} ) {
199 delete $static_pids->{$pid}
200 } else {
201 push @rows, ( $path => "$pid competed" );
202 $below_table = qq|<a href="/?clean_completed_downloads=1">clean completed downloads</a>|;
203 }
204 }
205
206 print $client $ok
207 , html::table( 2, @rows )
208 , $below_table
209 , html::tabs( log::mac_changes )
210 , $debug_proc
211 ;
212
213 } elsif ( $path =~ m{^/our/(\w+)/(\S+)} ) {
214 eval 'our $' . $1 . ' = ' . $2;
215 warn $@ if $@;
216 print $client $redirect, qq|<big>$1 = $2</big><br>Location: <a href="$url">$url</a>|;
217 server::debug( $debug ) if $1 eq 'debug';
218 } elsif ( $path =~ m{^/start_stop/((?:screen|kvm).*)} ) { # XXX we don't want to stop all classes
219 print $client $redirect, start_stop($1);
220 } elsif ( $path =~ m{^/action/([^/]+)/(.+)} ) {
221 $1->$2();
222 print $client $redirect;
223 } elsif ( $path =~ m{^/kill/static/(\d+)} ) {
224 print $client $redirect;
225 kill 1, $1 || kill 9, $2 && warn "killed $1";
226 } elsif ( $path eq '/exit' ) {
227 # DESTROY;
228 exit 0;
229 } elsif ( $path =~ m{/boot} ) {
230 print $client qq{$ok
231 #!gpxe
232 imgfree
233 login
234 chain http://$server::ip:$httpd::port/
235
236 };
237 } else {
238 print $client "HTTP/1.0 404 $path\r\nConnection: close\r\nContent-type: text/html\r\n\r\n<big>404 $path</big>";
239 warn "404 $path";
240 }
241
242 }
243
244 use browser;
245
246 sub start {
247
248 my $server = IO::Socket::INET->new(
249 Proto => 'tcp',
250 LocalPort => $httpd::port,
251 Listen => SOMAXCONN,
252 Reuse => 1
253 ) || die "can't start server on $url: $!";
254
255 print "url $url\n";
256
257 start_stop 'browser', $url;
258 start_stop 'screen';
259 start_stop 'kvm';
260
261 while (1) {
262 my $client = $server->accept() || next; # ALARM trickle us
263 my $request = <$client>;
264
265 warn "request $request\n" if $debug;
266
267 if ($request =~ m{^GET (/.*) HTTP/1.[01]}) {
268 my $path = $1;
269 my $param;
270 if ( $path =~ s{\?(.+)}{} ) {
271 foreach my $p ( split(/[&;]/, $1) ) {
272 my ($n,$v) = split(/=/, $p, 2);
273 $param->{$n} = $v;
274 }
275 warn "param: ",dump( $param ) if $debug;
276 }
277 get_request $client, $path, $param;
278 } else {
279 print $client "HTTP/1.0 500 No method\r\nConnection: close\r\nContent-type: text/plain\r\n\r\n500 $request";
280 warn "500 $request";
281 }
282
283 print $client qq{
284 <div style="font-size: 80%; color: #888">
285 <a href="">reload</a>
286 <a href=/>index</a>
287 <a href=/exit>exit</a>
288 </div>
289 } if $client->connected;
290
291 }
292
293 die "server died";
294 }
295
296 warn "loaded";
297
298 1;

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