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

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Revision 72 - (show annotations)
Thu Jul 30 23:57:19 2009 UTC (11 years, 5 months ago) by dpavlin
File size: 5820 byte(s)
record and display log changes by 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 Module::Refresh;
21
22 our $pids;
23 $pids = { httpd => $$ } unless defined $pids; # keep pids on refresh
24
25 sub DESTROY {
26 warn "pids ",dump( $pids );
27 foreach ( values %$pids ) {
28 warn "kill $_";
29 kill 1,$_ || kill 9, $_;
30 }
31 }
32
33 our $port = 7777;
34
35 use server;
36 our $debug = server::debug;
37 our $url = "http://$server::ip:$port";
38
39 use html;
40 our $static_pids;
41
42 sub static {
43 my ($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 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 / $size;
77 }
78 close($fh);
79 close($client);
80
81 print "$path $pos == $size OK\n";
82
83 exit;
84 }
85
86 use boolean;
87
88 use screen;
89 use kvm;
90
91 $SIG{CHLD} = 'IGNORE';
92
93 sub start_stop {
94 my $daemon = shift;
95 my $pid = $pids->{$daemon};
96
97 warn "start_stop $daemon $pid pids: ",dump( $pids );
98
99 if ( $pid =~ m{^\d+$} ) {
100 warn "kill 9 $pid";
101 kill 9, $pid;
102 $pids->{$daemon} = 'stopped';
103 return qq|$daemon pid $pid stopped|;
104 } else {
105 if ( $pid = fork ) {
106 # parent
107 $pids->{$daemon} = $pid;
108 warn "forked $daemon $pid";
109 return qq|$daemon pid $pid started|;
110 } elsif ( defined $pid ) {
111 # child
112 my $eval = $daemon . '::start(' . ( @_ ? dump(@_) : '' ) . ')';
113 warn "eval $eval";
114 eval $eval;
115 warn "can't start $daemon: $@" if $@;
116 exit;
117 } else {
118 die "fork error $!";
119 }
120 }
121 }
122
123 my $ok = qq|HTTP/1.0 200 OK\r\nContent-Type: text/html\r\nConnection: close\r\n\r\n|;
124 my $redirect = qq|HTTP/1.1 302 Found\r\nContent-type: text/html\r\nLocation: $url\r\n\r\n|;
125
126 sub get_request {
127 my ( $client, $path, $param ) = @_;
128
129 warn "get_request $client $path ",dump( $param );
130
131 if ( my $found = static( $client,$path ) ) {
132 warn "static $found" if $debug;
133 } elsif ( $path eq '/' ) {
134
135 my $screen = $pids->{screen} ? qq|stop <tt>$pids->{screen}</tt>| : 'start';
136 my $kvm = $pids->{kvm} ? qq|stop <tt>$pids->{kvm}</tt>| :
137 $pids->{screen} ? qq|start| : qq|start screen first|;
138
139 my @rows = (
140 'ip', html::tt( $server::ip ),
141 'netmask', html::tt( $server::netmask ),
142
143 'debug', qq|<a href=/our/debug/| . boolean::toggle($debug) . qq|>$debug</a>|,
144 );
145
146 my $debug_proc;
147
148 warn 'pids: ', dump( $pids );
149 foreach my $name ( keys %$pids ) {
150 my $pid = $pids->{$name} || next;
151
152 my $html = qq|<a href=/$name>$pid</a>|;
153
154 if ( $debug ) {
155 $html .= qq| <a name=$pid href=#proc-$pid>?</a>|;
156
157 my $proc = "/proc/$pid/status";
158 $debug_proc
159 .= qq|<a name=proc-$pid href=#$pid>$proc</a><pre style="font-size: 10%">|
160 . read_file($proc)
161 . qq|</pre>|
162 if -e $proc;
163 }
164
165 push @rows, ( $name => $html );
166 }
167
168 warn 'static_pids: ', dump( $static_pids );
169 foreach my $pid ( keys %$static_pids ) {
170 my $path = $static_pids->{$pid};
171 if ( -d "/proc/$pid" ) {
172 push @rows, ( $path => qq|<a href=/kill/static/$pid>$pid</a>| );
173 } else {
174 push @rows, ( $path => "$pid competed" );
175 }
176 }
177
178 print $client $ok
179 , html::table( 2, @rows )
180 , html::tabs( log::mac_changes )
181 , $debug_proc
182 ;
183
184 } elsif ( $path =~ m{^/our/(\w+)/(\S+)} ) {
185 eval 'our $' . $1 . ' = ' . $2;
186 warn $@ if $@;
187 print $client $redirect, qq|<big>$1 = $2</big><br>Location: <a href="$url">$url</a>|;
188 server::debug( $debug ) if $1 eq 'debug';
189 } elsif ( $path =~ m{^/(screen|kvm)} ) {
190 print $client $redirect, start_stop($1);
191 } elsif ( $path =~ m{^/kill/static/(\d+)} ) {
192 print $client $redirect;
193 kill 9, $1 && warn "killed $1";
194 } elsif ( $path eq '/exit' ) {
195 # DESTROY;
196 exit 0;
197 } elsif ( $path =~ m{/boot} ) {
198 print $client qq{$ok
199 #!gpxe
200 imgfree
201 login
202 chain http://$server::ip:$httpd::port/
203
204 };
205 } else {
206 print $client "HTTP/1.0 404 $path\r\nConnection: close\r\nContent-type: text/html\r\n\r\n<big>404 $path</big>";
207 warn "404 $path";
208 }
209
210 }
211
212 use browser;
213
214 sub start {
215
216 my $server = IO::Socket::INET->new(
217 Proto => 'tcp',
218 LocalPort => $httpd::port,
219 Listen => SOMAXCONN,
220 Reuse => 1
221 ) || die "can't start server on $url: $!";
222
223 print "url $url\n";
224
225 start_stop 'browser', $url;
226 start_stop 'screen';
227 start_stop 'kvm';
228
229 while (my $client = $server->accept()) {
230 $client->autoflush(1);
231 my $request = <$client>;
232
233 warn "request $request\n" if $debug;
234
235 Module::Refresh->refresh;
236
237 if ($request =~ m{^GET (/.*) HTTP/1.[01]}) {
238 my $path = $1;
239 my $param;
240 if ( $path =~ s{\?(.+)}{} ) {
241 foreach my $p ( split(/[&;]/, $1) ) {
242 my ($n,$v) = split(/=/, $p, 2);
243 $param->{$n} = $v;
244 }
245 warn "param: ",dump( $param ) if $debug;
246 }
247 warn "path $path param: ",dump( $param );
248 get_request $client, $path, $param;
249 } else {
250 print $client "HTTP/1.0 500 No method\r\nConnection: close\r\nContent-type: text/plain\r\n\r\n500 $request";
251 warn "500 $request";
252 }
253
254 print $client qq{
255 <div style="font-size: 80%; color: #888">
256 <a href="">reload</a>
257 <a href=/>index</a>
258 <a href=/exit>exit</a>
259 </div>
260 } if $client->connected;
261
262 }
263
264 die "server died";
265 }
266
267 warn "loaded";
268
269 1;

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