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

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Revision 53 - (show annotations)
Thu Jul 30 12:10:53 2009 UTC (11 years, 8 months ago) by dpavlin
File size: 3654 byte(s)
start/stop screen with servers from web interface

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 use Parallel::ForkManager;
22
23 our $port = 7777;
24 our $debug = 1;
25
26 my $pm = Parallel::ForkManager->new(10);
27
28 our $screen_pid;
29
30 use server;
31 our $url = "http://$server::ip:$port/";
32
33 use html;
34
35 sub static {
36 my ($client,$path) = @_;
37
38 $path = "tftp/$path";
39
40 if ( ! -e $path || -d $path ) {
41 print $client "HTTP/1.0 404 $path not found\r\n";
42 return;
43 }
44
45 my $type = 'text/plain';
46 $type = 'text/html' if $path =~ m{\.htm};
47 $type = 'application/javascript' if $path =~ m{\.js};
48
49 print $client "HTTP/1.0 200 OK\r\nContent-Type: $type\r\nContent-Length: ", -s $path,"\r\n\r\n";
50 open(my $html, $path);
51 while(<$html>) {
52 print $client $_;
53 }
54 close($html);
55
56 return $path;
57 }
58
59 my $ok = "HTTP/1.0 200 OK\r\nContent-Type: text/html\r\nConnection: close\r\n\r\n";
60
61 use boolean;
62 use screen;
63
64 sub get_request {
65 my ( $client, $path, $param ) = @_;
66
67 warn "get_request $client $path ",dump( $param );
68
69 if ( my $found = static( $client,$path ) ) {
70 warn "static $found" if $debug;
71 } elsif ( $path eq '/' ) {
72
73 my $screen = $screen_pid ? qq|stop <tt>$screen_pid</tt>| : 'start';
74
75 print $client $ok,
76 html::table( 2,
77 'pid', $$,
78 'debug', qq|<a href=/our/debug/| . boolean::toggle($debug) . qq|>$debug</a>|,
79 'screen', qq|<a href=/screen>$screen</a>|,
80 );
81
82 } elsif ( $path =~ m{^/our/(\w+)/(\S+)} ) {
83 eval 'our $' . $1 . ' = ' . $2;
84 warn $@ if $@;
85 print $client qq|HTTP/1.1 302 Found\r\nLocation: $url\r\nContent-type: text/html\r\n\r\n<big>$1 = $2</big><br>Location: <a href="$url">$url</a>|;
86 } elsif ( $path =~ m{^/screen} ) {
87
88 if ( $screen_pid ) {
89 if ( ! kill $screen_pid ) {
90 warn "kill -9 $screen_pid";
91 if ( kill 9, $screen_pid ) {
92 print $client $ok, qq|screen pid $screen_pid stopped|;
93 $screen_pid = 0;
94 } else {
95 print $client $ok, qq|can't stop screen $screen_pid: $!|;
96 }
97 }
98 } else {
99 if ( $screen_pid = $pm->start ) {
100 print $client $ok, qq|screen started pid $screen_pid|;
101 } else {
102 screen::start;
103 $pm->finish;
104 }
105 }
106
107 } elsif ( $path =~ m{/boot} ) {
108 print $client qq{$ok
109 #!gpxe
110 imgfree
111 login
112 chain http://$server::ip:$httpd::port/
113
114 };
115 } else {
116 print $client "HTTP/1.0 404 $path\r\nConnection: close\r\nContent-type: text/html\r\n\r\n<big>404 $path</big>";
117 warn "404 $path";
118 }
119
120 }
121
122 sub start {
123
124 my $server = IO::Socket::INET->new(
125 Proto => 'tcp',
126 LocalPort => $httpd::port,
127 Listen => SOMAXCONN,
128 Reuse => 1
129 ) || die "can't start server on $url: $!";
130
131 print "url $url\n";
132
133 system "/mnt/llin/rest/cvs/uzbl/uzbl -u $url &";
134
135 while (my $client = $server->accept()) {
136 $client->autoflush(1);
137 my $request = <$client>;
138
139 warn "request $request\n" if $debug;
140
141 Module::Refresh->refresh;
142
143 if ($request =~ m{^GET (/.*) HTTP/1.[01]}) {
144 my $path = $1;
145 my $param;
146 if ( $path =~ s{\?(.+)}{} ) {
147 foreach my $p ( split(/[&;]/, $1) ) {
148 my ($n,$v) = split(/=/, $p, 2);
149 $param->{$n} = $v;
150 }
151 warn "param: ",dump( $param ) if $debug;
152 }
153 warn "path $path param: ",dump( $param );
154 get_request $client, $path, $param;
155 } else {
156 print $client "HTTP/1.0 500 No method\r\nConnection: close\r\nContent-type: text/plain\r\n\r\n500 $request";
157 warn "500 $request";
158 }
159
160 print $client qq{
161 <div style="font-size: 80%; color: #888">
162 <a href="">reload</a>
163 <a href="/">index</a>
164 </div>
165 } if $client->connected;
166
167 }
168
169 die "server died";
170 }
171
172 warn "loaded";
173
174 1;

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