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

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Revision 86 - (hide annotations)
Fri Jul 31 17:41:19 2009 UTC (11 years, 9 months ago) by dpavlin
File size: 6195 byte(s)
fixed kill

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 dpavlin 43 use Module::Refresh;
21 dpavlin 42
22 dpavlin 70 our $pids;
23     $pids = { httpd => $$ } unless defined $pids; # keep pids on refresh
24 dpavlin 66
25     sub DESTROY {
26     warn "pids ",dump( $pids );
27     foreach ( values %$pids ) {
28     warn "kill $_";
29     kill 1,$_ || kill 9, $_;
30     }
31     }
32    
33 dpavlin 42 our $port = 7777;
34    
35     use server;
36 dpavlin 67 our $debug = server::debug;
37 dpavlin 64 our $url = "http://$server::ip:$port";
38 dpavlin 42
39 dpavlin 43 use html;
40 dpavlin 70 our $static_pids;
41 dpavlin 43
42 dpavlin 42 sub static {
43     my ($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     print "static $path $type $size\n";
68    
69     my $block = 8192;
70     my $buff;
71     my $pos = 0;
72    
73     while( my $len = read $fh, $buff, $block ) {
74     print $client $buff;
75     $pos += $len;
76     printf "%s %d/%d %.2f%%\r", $path, $pos, $size, $pos * 100 / $size;
77 dpavlin 42 }
78 dpavlin 65 close($fh);
79     close($client);
80 dpavlin 42
81 dpavlin 65 print "$path $pos == $size OK\n";
82    
83 dpavlin 70 exit;
84 dpavlin 42 }
85    
86 dpavlin 43 use boolean;
87 dpavlin 57
88 dpavlin 53 use screen;
89 dpavlin 57 use kvm;
90 dpavlin 42
91 dpavlin 57 $SIG{CHLD} = 'IGNORE';
92    
93     sub start_stop {
94     my $daemon = shift;
95     my $pid = $pids->{$daemon};
96    
97 dpavlin 67 warn "start_stop $daemon $pid pids: ",dump( $pids );
98 dpavlin 57
99 dpavlin 67 if ( $pid =~ m{^\d+$} ) {
100 dpavlin 77 my $pstree = `pstree -p $pid`;
101     my @pids = $pstree =~ m{\((\d+)\)}g;
102     warn "pstree $pstree pids ",dump( @pids );
103     kill 1, $_ foreach reverse @pids;
104 dpavlin 66 $pids->{$daemon} = 'stopped';
105 dpavlin 57 return qq|$daemon pid $pid stopped|;
106     } else {
107     if ( $pid = fork ) {
108     # parent
109     $pids->{$daemon} = $pid;
110     warn "forked $daemon $pid";
111     return qq|$daemon pid $pid started|;
112     } elsif ( defined $pid ) {
113     # child
114 dpavlin 81 my $invoke = 'start';
115     $invoke = $1 if $daemon =~ s{/(.+)}{};
116     my $eval = $daemon . '::' . $invoke . '(' . ( @_ ? dump(@_) : '' ) . ')';
117 dpavlin 57 warn "eval $eval";
118     eval $eval;
119     warn "can't start $daemon: $@" if $@;
120     exit;
121     } else {
122     die "fork error $!";
123     }
124     }
125     }
126    
127 dpavlin 67 my $ok = qq|HTTP/1.0 200 OK\r\nContent-Type: text/html\r\nConnection: close\r\n\r\n|;
128     my $redirect = qq|HTTP/1.1 302 Found\r\nContent-type: text/html\r\nLocation: $url\r\n\r\n|;
129    
130 dpavlin 43 sub get_request {
131     my ( $client, $path, $param ) = @_;
132    
133 dpavlin 53 warn "get_request $client $path ",dump( $param );
134 dpavlin 43
135     if ( my $found = static( $client,$path ) ) {
136     warn "static $found" if $debug;
137     } elsif ( $path eq '/' ) {
138 dpavlin 53
139 dpavlin 57 my $screen = $pids->{screen} ? qq|stop <tt>$pids->{screen}</tt>| : 'start';
140     my $kvm = $pids->{kvm} ? qq|stop <tt>$pids->{kvm}</tt>| :
141     $pids->{screen} ? qq|start| : qq|start screen first|;
142 dpavlin 53
143 dpavlin 66 my @rows = (
144 dpavlin 64 'ip', html::tt( $server::ip ),
145     'netmask', html::tt( $server::netmask ),
146 dpavlin 66
147 dpavlin 64 'debug', qq|<a href=/our/debug/| . boolean::toggle($debug) . qq|>$debug</a>|,
148 dpavlin 43 );
149 dpavlin 70
150 dpavlin 71 my $debug_proc;
151    
152 dpavlin 78 warn 'pids: ', dump( $pids ) if $debug;
153 dpavlin 70 foreach my $name ( keys %$pids ) {
154 dpavlin 66 my $pid = $pids->{$name} || next;
155 dpavlin 43
156 dpavlin 66 my $html = qq|<a href=/$name>$pid</a>|;
157    
158 dpavlin 81 my $proc = "/proc/$pid/status";
159 dpavlin 71
160 dpavlin 81 if ( -e $proc ) {
161     if ( $debug ) {
162     $html .= qq| <a name=$pid href=#proc-$pid>?</a>|;
163    
164     $debug_proc
165     .= qq|<a name=proc-$pid href=#$pid>$proc</a><pre style="font-size: 10%">|
166     . read_file($proc)
167     . qq|</pre>|
168     ;
169     }
170    
171     if ( $name->can('start_options') ) {
172     $html .= qq| <a href=/kvm/$_>$_</a>| foreach $name->start_options;
173     }
174 dpavlin 71 }
175    
176 dpavlin 66 push @rows, ( $name => $html );
177     }
178    
179 dpavlin 78 warn 'static_pids: ', dump( $static_pids ) if $debug;
180 dpavlin 70 foreach my $pid ( keys %$static_pids ) {
181     my $path = $static_pids->{$pid};
182     if ( -d "/proc/$pid" ) {
183     push @rows, ( $path => qq|<a href=/kill/static/$pid>$pid</a>| );
184     } else {
185     push @rows, ( $path => "$pid competed" );
186     }
187     }
188    
189 dpavlin 72 print $client $ok
190     , html::table( 2, @rows )
191     , html::tabs( log::mac_changes )
192     , $debug_proc
193     ;
194 dpavlin 66
195 dpavlin 43 } elsif ( $path =~ m{^/our/(\w+)/(\S+)} ) {
196     eval 'our $' . $1 . ' = ' . $2;
197     warn $@ if $@;
198 dpavlin 67 print $client $redirect, qq|<big>$1 = $2</big><br>Location: <a href="$url">$url</a>|;
199     server::debug( $debug ) if $1 eq 'debug';
200 dpavlin 81 } elsif ( $path =~ m{^/((?:screen|kvm).*)} ) {
201 dpavlin 67 print $client $redirect, start_stop($1);
202 dpavlin 70 } elsif ( $path =~ m{^/kill/static/(\d+)} ) {
203     print $client $redirect;
204 dpavlin 86 kill 1, $1 || kill 9, $2 && warn "killed $1";
205 dpavlin 66 } elsif ( $path eq '/exit' ) {
206     # DESTROY;
207     exit 0;
208 dpavlin 43 } elsif ( $path =~ m{/boot} ) {
209     print $client qq{$ok
210     #!gpxe
211     imgfree
212     login
213     chain http://$server::ip:$httpd::port/
214    
215     };
216     } else {
217     print $client "HTTP/1.0 404 $path\r\nConnection: close\r\nContent-type: text/html\r\n\r\n<big>404 $path</big>";
218     warn "404 $path";
219     }
220    
221     }
222 dpavlin 53
223 dpavlin 66 use browser;
224    
225 dpavlin 42 sub start {
226    
227     my $server = IO::Socket::INET->new(
228     Proto => 'tcp',
229     LocalPort => $httpd::port,
230     Listen => SOMAXCONN,
231     Reuse => 1
232 dpavlin 43 ) || die "can't start server on $url: $!";
233 dpavlin 42
234     print "url $url\n";
235    
236 dpavlin 66 start_stop 'browser', $url;
237     start_stop 'screen';
238     start_stop 'kvm';
239 dpavlin 42
240     while (my $client = $server->accept()) {
241     $client->autoflush(1);
242     my $request = <$client>;
243    
244     warn "request $request\n" if $debug;
245    
246 dpavlin 43 Module::Refresh->refresh;
247    
248 dpavlin 42 if ($request =~ m{^GET (/.*) HTTP/1.[01]}) {
249 dpavlin 43 my $path = $1;
250 dpavlin 42 my $param;
251 dpavlin 43 if ( $path =~ s{\?(.+)}{} ) {
252 dpavlin 42 foreach my $p ( split(/[&;]/, $1) ) {
253     my ($n,$v) = split(/=/, $p, 2);
254     $param->{$n} = $v;
255     }
256     warn "param: ",dump( $param ) if $debug;
257     }
258 dpavlin 43 warn "path $path param: ",dump( $param );
259     get_request $client, $path, $param;
260 dpavlin 42 } else {
261     print $client "HTTP/1.0 500 No method\r\nConnection: close\r\nContent-type: text/plain\r\n\r\n500 $request";
262     warn "500 $request";
263     }
264    
265     print $client qq{
266 dpavlin 43 <div style="font-size: 80%; color: #888">
267     <a href="">reload</a>
268 dpavlin 66 <a href=/>index</a>
269     <a href=/exit>exit</a>
270 dpavlin 43 </div>
271     } if $client->connected;
272 dpavlin 42
273     }
274    
275     die "server died";
276     }
277    
278 dpavlin 45 warn "loaded";
279    
280 dpavlin 42 1;

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