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

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Revision 65 - (show annotations)
Thu Jul 30 17:07:48 2009 UTC (14 years, 8 months ago) by dpavlin
File size: 4356 byte(s)
correct static file serving and implement progress bar

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 $port = 7777;
23 our $debug = 1;
24
25 use server;
26 our $url = "http://$server::ip:$port";
27
28 use html;
29
30 sub static {
31 my ($client,$path) = @_;
32
33 my $full = "$server::base_dir/tftp/$path";
34
35 return if ! -f $full;
36
37 my $type = 'application/octet-stream';
38 $type = 'text/html' if $path =~ m{\.htm};
39 $type = 'application/javascript' if $path =~ m{\.js};
40 $type = 'text/plain' if $path =~ m{\.txt};
41
42 my $size = -s $full || return;
43
44 print $client "HTTP/1.0 200 OK\r\nContent-Type: $type\r\nContent-Length: $size\r\nConnection: close\r\n\r\n";
45
46 open(my $fh, $full);
47 print "static $path $type $size\n";
48
49 my $block = 8192;
50 my $buff;
51 my $pos = 0;
52
53 while( my $len = read $fh, $buff, $block ) {
54 print $client $buff;
55 $pos += $len;
56 printf "%s %d/%d %.2f%%\r", $path, $pos, $size, $pos * 100 / $size;
57 }
58 close($fh);
59 close($client);
60
61 print "$path $pos == $size OK\n";
62
63 return $path;
64 }
65
66 my $ok = "HTTP/1.0 200 OK\r\nContent-Type: text/html\r\nConnection: close\r\n\r\n";
67
68 use boolean;
69
70 use screen;
71 use kvm;
72 our $pids;
73
74 $SIG{CHLD} = 'IGNORE';
75
76 sub start_stop {
77 my $daemon = shift;
78 my $pid = $pids->{$daemon};
79
80 warn "start_stop $daemon pids: ",dump( $pids );
81
82 if ( $pid ) {
83 warn "kill 9 $pid";
84 kill 9, $pid;
85 delete $pids->{$daemon};
86 return qq|$daemon pid $pid stopped|;
87 } else {
88 if ( $pid = fork ) {
89 # parent
90 $pids->{$daemon} = $pid;
91 warn "forked $daemon $pid";
92 return qq|$daemon pid $pid started|;
93 } elsif ( defined $pid ) {
94 # child
95 my $eval = $daemon . '::start';
96 warn "eval $eval";
97 eval $eval;
98 warn "can't start $daemon: $@" if $@;
99 exit;
100 } else {
101 die "fork error $!";
102 }
103 }
104 }
105
106 sub get_request {
107 my ( $client, $path, $param ) = @_;
108
109 warn "get_request $client $path ",dump( $param );
110
111 if ( my $found = static( $client,$path ) ) {
112 warn "static $found" if $debug;
113 } elsif ( $path eq '/' ) {
114
115 my $screen = $pids->{screen} ? qq|stop <tt>$pids->{screen}</tt>| : 'start';
116 my $kvm = $pids->{kvm} ? qq|stop <tt>$pids->{kvm}</tt>| :
117 $pids->{screen} ? qq|start| : qq|start screen first|;
118
119 print $client $ok,
120 html::table( 2,
121 'pid', html::tt( $$ ),
122 'ip', html::tt( $server::ip ),
123 'netmask', html::tt( $server::netmask ),
124 'debug', qq|<a href=/our/debug/| . boolean::toggle($debug) . qq|>$debug</a>|,
125 'screen', qq|<a href=/screen>$screen</a>|,
126 'kvm', qq|<a href=/kvm>$kvm</a>|,
127 );
128
129 } elsif ( $path =~ m{^/our/(\w+)/(\S+)} ) {
130 eval 'our $' . $1 . ' = ' . $2;
131 warn $@ if $@;
132 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>|;
133 } elsif ( $path =~ m{^/(screen|kvm)} ) {
134 print $client $ok, start_stop($1);
135 } elsif ( $path =~ m{/boot} ) {
136 print $client qq{$ok
137 #!gpxe
138 imgfree
139 login
140 chain http://$server::ip:$httpd::port/
141
142 };
143 } else {
144 print $client "HTTP/1.0 404 $path\r\nConnection: close\r\nContent-type: text/html\r\n\r\n<big>404 $path</big>";
145 warn "404 $path";
146 }
147
148 }
149
150 sub start {
151
152 my $server = IO::Socket::INET->new(
153 Proto => 'tcp',
154 LocalPort => $httpd::port,
155 Listen => SOMAXCONN,
156 Reuse => 1
157 ) || die "can't start server on $url: $!";
158
159 print "url $url\n";
160
161 system "/mnt/llin/rest/cvs/uzbl/uzbl -u $url &";
162
163 while (my $client = $server->accept()) {
164 $client->autoflush(1);
165 my $request = <$client>;
166
167 warn "request $request\n" if $debug;
168
169 Module::Refresh->refresh;
170
171 if ($request =~ m{^GET (/.*) HTTP/1.[01]}) {
172 my $path = $1;
173 my $param;
174 if ( $path =~ s{\?(.+)}{} ) {
175 foreach my $p ( split(/[&;]/, $1) ) {
176 my ($n,$v) = split(/=/, $p, 2);
177 $param->{$n} = $v;
178 }
179 warn "param: ",dump( $param ) if $debug;
180 }
181 warn "path $path param: ",dump( $param );
182 get_request $client, $path, $param;
183 } else {
184 print $client "HTTP/1.0 500 No method\r\nConnection: close\r\nContent-type: text/plain\r\n\r\n500 $request";
185 warn "500 $request";
186 }
187
188 print $client qq{
189 <div style="font-size: 80%; color: #888">
190 <a href="">reload</a>
191 <a href="/">index</a>
192 </div>
193 } if $client->connected;
194
195 }
196
197 die "server died";
198 }
199
200 warn "loaded";
201
202 1;

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