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

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Revision 136 - (hide annotations)
Tue Aug 4 13:30:47 2009 UTC (14 years, 7 months ago) by dpavlin
File size: 6777 byte(s)
fix warning about undefined $pid

1 dpavlin 42 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 dpavlin 70 our $pids;
22     $pids = { httpd => $$ } unless defined $pids; # keep pids on refresh
23 dpavlin 66
24     sub DESTROY {
25     warn "pids ",dump( $pids );
26     foreach ( values %$pids ) {
27     warn "kill $_";
28     kill 1,$_ || kill 9, $_;
29     }
30     }
31    
32 dpavlin 42 our $port = 7777;
33    
34     use server;
35 dpavlin 67 our $debug = server::debug;
36 dpavlin 64 our $url = "http://$server::ip:$port";
37 dpavlin 42
38 dpavlin 43 use html;
39 dpavlin 70 our $static_pids;
40 dpavlin 115 use progress_bar;
41 dpavlin 43
42 dpavlin 42 sub static {
43     my ($client,$path) = @_;
44    
45 dpavlin 65 my $full = "$server::base_dir/tftp/$path";
46 dpavlin 42
47 dpavlin 65 return if ! -f $full;
48 dpavlin 42
49 dpavlin 70 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 dpavlin 65 my $type = 'application/octet-stream';
58 dpavlin 42 $type = 'text/html' if $path =~ m{\.htm};
59     $type = 'application/javascript' if $path =~ m{\.js};
60 dpavlin 65 $type = 'text/plain' if $path =~ m{\.txt};
61 dpavlin 42
62 dpavlin 65 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 dpavlin 96 my $block = 1400; # try not to fragment packages (pxelinux seems to have problems with it)
69 dpavlin 65 my $buff;
70     my $pos = 0;
71    
72 dpavlin 105 warn "static $path $type $size block: $block\n";
73 dpavlin 96
74 dpavlin 115 progress_bar::start;
75 dpavlin 105
76 dpavlin 65 while( my $len = read $fh, $buff, $block ) {
77 dpavlin 107 print $client $buff;
78 dpavlin 105 $client->flush;
79 dpavlin 65 $pos += $len;
80 dpavlin 115 progress_bar::tick( $path, $pos, $size );
81 dpavlin 42 }
82 dpavlin 65 close($fh);
83     close($client);
84 dpavlin 42
85 dpavlin 105 print STDERR "\n";
86 dpavlin 65
87 dpavlin 107 warn "exit static child";
88    
89     exit(0);
90 dpavlin 42 }
91    
92 dpavlin 43 use boolean;
93 dpavlin 57
94 dpavlin 53 use screen;
95 dpavlin 57 use kvm;
96 dpavlin 42
97 dpavlin 57 $SIG{CHLD} = 'IGNORE';
98    
99     sub start_stop {
100     my $daemon = shift;
101 dpavlin 136 my $pid = $pids->{$daemon} || 'not started';
102 dpavlin 57
103 dpavlin 96 warn "start_stop $daemon $pid\n";
104 dpavlin 57
105 dpavlin 67 if ( $pid =~ m{^\d+$} ) {
106 dpavlin 77 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 dpavlin 66 $pids->{$daemon} = 'stopped';
111 dpavlin 57 return qq|$daemon pid $pid stopped|;
112     } else {
113     if ( $pid = fork ) {
114     # parent
115     $pids->{$daemon} = $pid;
116 dpavlin 96 warn "forked $daemon $pid\n";
117 dpavlin 57 return qq|$daemon pid $pid started|;
118     } elsif ( defined $pid ) {
119     # child
120 dpavlin 81 my $invoke = 'start';
121     $invoke = $1 if $daemon =~ s{/(.+)}{};
122     my $eval = $daemon . '::' . $invoke . '(' . ( @_ ? dump(@_) : '' ) . ')';
123 dpavlin 57 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 dpavlin 67 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 dpavlin 43 sub get_request {
137     my ( $client, $path, $param ) = @_;
138    
139 dpavlin 128 server->refresh;
140    
141 dpavlin 96 warn "get_request $path ", $param ? dump( $param ) : '', "\n";
142 dpavlin 43
143     if ( my $found = static( $client,$path ) ) {
144     warn "static $found" if $debug;
145     } elsif ( $path eq '/' ) {
146 dpavlin 53
147 dpavlin 57 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 dpavlin 53
151 dpavlin 66 my @rows = (
152 dpavlin 64 'ip', html::tt( $server::ip ),
153     'netmask', html::tt( $server::netmask ),
154 dpavlin 66
155 dpavlin 64 'debug', qq|<a href=/our/debug/| . boolean::toggle($debug) . qq|>$debug</a>|,
156 dpavlin 43 );
157 dpavlin 70
158 dpavlin 96 my $debug_proc = '';
159 dpavlin 71
160 dpavlin 78 warn 'pids: ', dump( $pids ) if $debug;
161 dpavlin 87 foreach my $name ( sort keys %$pids ) {
162 dpavlin 66 my $pid = $pids->{$name} || next;
163 dpavlin 43
164 dpavlin 89 my $html = qq|<a href=/start_stop/$name>$pid</a>|;
165 dpavlin 66
166 dpavlin 81 my $proc = "/proc/$pid/status";
167 dpavlin 71
168 dpavlin 81 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 dpavlin 88 if ( $name->can('start_fork') ) {
180     $html .= qq| <a href=/start_stop/kvm/$_>$_</a>| foreach $name->start_fork;
181 dpavlin 81 }
182 dpavlin 88
183     if ( $name->can('actions') ) {
184     $html .= qq| <a href=/action/kvm/$_>$_</a>| foreach $name->actions;
185     }
186 dpavlin 71 }
187    
188 dpavlin 66 push @rows, ( $name => $html );
189     }
190    
191 dpavlin 91 my $below_table = '';
192    
193 dpavlin 78 warn 'static_pids: ', dump( $static_pids ) if $debug;
194 dpavlin 70 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 dpavlin 91 } elsif ( $param->{clean_completed_downloads} ) {
199     delete $static_pids->{$pid}
200 dpavlin 70 } else {
201     push @rows, ( $path => "$pid competed" );
202 dpavlin 91 $below_table = qq|<a href="/?clean_completed_downloads=1">clean completed downloads</a>|;
203 dpavlin 70 }
204     }
205    
206 dpavlin 72 print $client $ok
207     , html::table( 2, @rows )
208 dpavlin 91 , $below_table
209 dpavlin 72 , html::tabs( log::mac_changes )
210     , $debug_proc
211     ;
212 dpavlin 66
213 dpavlin 43 } elsif ( $path =~ m{^/our/(\w+)/(\S+)} ) {
214     eval 'our $' . $1 . ' = ' . $2;
215     warn $@ if $@;
216 dpavlin 67 print $client $redirect, qq|<big>$1 = $2</big><br>Location: <a href="$url">$url</a>|;
217     server::debug( $debug ) if $1 eq 'debug';
218 dpavlin 89 } elsif ( $path =~ m{^/start_stop/((?:screen|kvm).*)} ) { # XXX we don't want to stop all classes
219 dpavlin 67 print $client $redirect, start_stop($1);
220 dpavlin 88 } elsif ( $path =~ m{^/action/([^/]+)/(.+)} ) {
221     $1->$2();
222     print $client $redirect;
223 dpavlin 70 } elsif ( $path =~ m{^/kill/static/(\d+)} ) {
224     print $client $redirect;
225 dpavlin 86 kill 1, $1 || kill 9, $2 && warn "killed $1";
226 dpavlin 66 } elsif ( $path eq '/exit' ) {
227     # DESTROY;
228     exit 0;
229 dpavlin 43 } 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 dpavlin 53
244 dpavlin 66 use browser;
245    
246 dpavlin 42 sub start {
247    
248     my $server = IO::Socket::INET->new(
249     Proto => 'tcp',
250     LocalPort => $httpd::port,
251     Listen => SOMAXCONN,
252     Reuse => 1
253 dpavlin 43 ) || die "can't start server on $url: $!";
254 dpavlin 42
255     print "url $url\n";
256    
257 dpavlin 66 start_stop 'browser', $url;
258     start_stop 'screen';
259     start_stop 'kvm';
260 dpavlin 42
261 dpavlin 118 while (1) {
262     my $client = $server->accept() || next; # ALARM trickle us
263 dpavlin 42 my $request = <$client>;
264    
265     warn "request $request\n" if $debug;
266    
267     if ($request =~ m{^GET (/.*) HTTP/1.[01]}) {
268 dpavlin 43 my $path = $1;
269 dpavlin 42 my $param;
270 dpavlin 43 if ( $path =~ s{\?(.+)}{} ) {
271 dpavlin 42 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 dpavlin 43 get_request $client, $path, $param;
278 dpavlin 42 } 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 dpavlin 43 <div style="font-size: 80%; color: #888">
285     <a href="">reload</a>
286 dpavlin 66 <a href=/>index</a>
287     <a href=/exit>exit</a>
288 dpavlin 43 </div>
289     } if $client->connected;
290 dpavlin 42
291     }
292    
293     die "server died";
294     }
295    
296 dpavlin 45 warn "loaded";
297    
298 dpavlin 42 1;

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