lib/PXElator/httpd.pm

package httpd;

use warnings;
use strict;
use autodie;

=head1 httpd

Start with:

  perl -Ilib/PXElator -Mhttpd -e httpd::start

=cut

use Data::Dump qw/dump/;
use Carp qw/confess/;
use File::Slurp;
#use JSON;
use IO::Socket::INET;
use Regexp::Common qw/net/;

sub menu {qq{

<div style="font-size: 80%; color: #888">
<a href=/>home</a>
<a href=/server>server</a>
<a href=/client>client</a>
</div>

}}

our $port = 7777;

use server;
our $debug = server::debug;
our $url = "http://$server::ip:$port";

use html;
our $static_pids;
use progress_bar;
use config;
use client;
use log;
use x11;
use amt;
use boolean;
use daemons;

use kvm;
use browser;
use network;


sub static {
        my ($client,$path) = @_;

        my $full = "$server::base_dir/tftp/$path";

        return if ! -f $full;

        if ( my $pid = fork ) {
                # parent
                close($client);
                print "http static child $pid\n";
                $static_pids->{$pid} = $path;
                return 1;
        }

        my $type = 'application/octet-stream';
        $type = 'text/html' if $path =~ m{\.htm};
        $type = 'application/javascript' if $path =~ m{\.js};
        $type = 'text/plain' if $path =~ m{\.txt};

        my $size = -s $full || return;

        print $client "HTTP/1.0 200 OK\r\nContent-Type: $type\r\nContent-Length: $size\r\nConnection: close\r\n\r\n";

        open(my $fh, $full);

        my $block = 1400; # try not to fragment packages (pxelinux seems to have problems with it)
        my $buff;
        my $pos = 0;

        warn "static $path $type $size block: $block\n";

        progress_bar::start;

        while( my $len = read $fh, $buff, $block ) {
                print $client $buff;
                $client->flush;
                $pos += $len;
                progress_bar::tick( $path, $pos, $size );
        }
        close($fh);
        close($client);

        print STDERR "\n";

        warn "exit static child";

        exit(0);
}

sub ok {
        qq|HTTP/1.0 200 OK\r\nContent-Type: text/html\r\nConnection: close\r\n\r\n| . menu()
}

sub redirect {
        my $to = shift;
        $to ||= $url;
        qq|HTTP/1.1 302 Found\r\nContent-type: text/html\r\nLocation: $to\r\n\r\n|
}

sub get_request {
        my ( $client, $path, $param ) = @_;

        server->refresh;

        warn "get_request $path ", $param ? dump( $param ) : '', "\n";

        if ( my $found = static( $client,$path ) ) {
                warn "static $found" if $debug;
        } elsif ( $path eq '/' ) {

                my @rows = (
                        'debug',        qq|<a href=/our/debug/| . boolean::toggle($debug) . qq|>$debug</a>|,
                );

                my $debug_proc = '';

                foreach my $name ( sort keys %$daemons::pids ) {
                        my $pid = $daemons::pids->{$name} || next;

                        my $html;

                        my $proc = "/proc/$pid/status";

                        if ( -e $proc ) {
                                $html .= qq|<a href=/start_stop/$name>$pid</a>|;
                                if ( $debug ) {
                                        $html .= qq| <a name=$pid href=#proc-$pid>?</a>|;

                                        $debug_proc
                                                .= qq|<a name=proc-$pid href=#$pid>$proc</a><pre style="font-size: 10%">|
                                                .  read_file($proc)
                                                .  qq|</pre>|
                                                ;
                                }

                                if ( $name->can('start_fork') ) {
                                        $html .= qq| <a href=/start_stop/kvm/$_>$_</a>| foreach $name->start_fork;
                                }

                                if ( $name->can('actions') ) {
                                        $html .= qq| <a href=/action/kvm/$_>$_</a>| foreach $name->actions;
                                }
                        } else {
                                $html .= qq|<a href=/start_stop/$name>restart</a> $pid exited|;
                        }

                        push @rows, ( $name => $html );
                }

                my $below_table = '';

                warn 'static_pids: ', dump( $static_pids ) if $debug;
                foreach my $pid ( keys %$static_pids ) {
                        my $path = $static_pids->{$pid};
                        if ( -d "/proc/$pid" ) {
                                push @rows, ( $path => qq|<a href=/kill/static/$pid>$pid</a>| );
                        } elsif ( $param->{clean_completed_downloads} ) {
                                delete $static_pids->{$pid}
                        } else {
                                push @rows, ( $path => "$pid competed" );
                                $below_table = qq|<a href="/?clean_completed_downloads=1">clean completed downloads</a>|;
                        }
                }

                print $client ok
                        , html::table( 2, @rows )
                        , $below_table
                        , html::tabs( log::mac_changes )
                        , $debug_proc
                        ;

        } elsif ( $path =~ m{^/server} ) {
                print $client ok
                        , html::table( 2, map { ( $_, html::tt eval '$server::'.$_ ) } ( 'ip', 'netmask', 'ip_from', 'ip_to', 'domain_name', 'base_dir', 'conf' ) )
                        ;
        } elsif ( $path =~ m!^/client(?:/$RE{net}{IPv4}{-keep})?! ) {
                my $ip = $1 || $client->peerhost;

                if ( my $new_ip = $param->{change_ip} ) {
                        client::change_ip( $ip, $new_ip );
                        $ip = $new_ip;
                }

                if ( $ip ne $server::ip ) {
                        my $hostname = client::conf( $ip, 'hostname' => $param->{hostname} );

                        my @table = (
                                'ip' => qq|<input type=text name=change_ip value="$ip" onChange="document.getElementById('old_ip').style.display = '';"><span id=old_ip style="display: none; color: #888;">old: $ip<span>|,
                                'hostname' => qq|<input type=text name=hostname value="$hostname">|,
                        );

                        my $deploy;

                        if ( my $mac = client::mac( $ip ) ) {
                                $deploy = client::conf( $ip, 'deploy' => $param->{deploy} );
                                push @table, (
                                        'mac' => $mac,
                                        'deploy' => html::select( 'deploy', $deploy, config::available )
                                );
                                $deploy = qq|<h2>PXElinux</h2>| . html::pre( config::for_ip( $ip ) );
                        }

                        print $client ok
                                , qq|<form method=get>|
                                , html::table( 2, @table ),
                                , qq|<input type=submit value=change></form>|
                                , $deploy
                                ;

                        if ( my $amt = client::conf( $ip, 'amt' ) ) {
                                print $client qq|<h2>AMT</h2>|, amt::info( $amt );
                        }
                } else {

                        my $arp = {
                                map {
                                        my @c = split(/\s+/,$_);
                                        if ( $#c == 5 ) {
                                                ( uc $c[3] => [ $c[0] , $c[5] ] )
                                        } else {
                                        }
                                } read_file('/proc/net/arp')
                        };

                        warn "# arp ",dump( $arp );

                        print $client ok
                                , qq|<h2>Clients on $server::ip</h2>|
                                , html::table( -5,
                                        'ip', 'hostname', 'mac', 'deploy', 'arp',
                                        map {
                                                my $ip = $_;
                                                $ip =~ s{^.+/ip/}{};
                                                my $arp = $arp->{ client::mac $ip, 'clean' };
                                                $arp = $arp ? $arp->[1] : '';
                                                $arp =~ s{$ip}{};
                                                (
                                                        qq|<a href=/client/$ip>$ip</a>|
                                                        , client::conf( $ip, 'hostname' )
                                                        , client::mac( $ip )
                                                        , html::tt( client::conf( $ip, 'deploy' ) )
                                                        , $arp
                                                );
                                        }
                                        glob("$server::conf/ip/*") 
                                )
                                , qq|<h2>ARP</h2>|
                                , html::table( -3, 'mac', 'dev', 'ip',
                                        map {
                                                my $c = $arp->{$_};
                                                ( html::tt( $_ ), $c->[1], $c->[0] )
                                        } sort keys %$arp
                                )
                                ;
                }
        } elsif ( $path =~ m{^/our/(\w+)/(\S+)} ) {
                eval 'our $' . $1 . ' = ' . $2;
                warn $@ if $@;
                print $client redirect($url), qq|<big>$1 = $2</big><br>Location: <a href="$url">$url</a>|;
                server::debug( $debug ) if $1 eq 'debug';
        } elsif ( $path =~ m{^/start_stop/(\S+)} ) {
                print $client redirect, daemons::start_stop($1);
        } elsif ( $path =~ m{^/action/([^/]+)/(.+)} ) {
                $1->$2();
                print $client redirect;
        } elsif ( $path =~ m{^/kill/static/(\d+)} ) {
                print $client redirect;
                kill 1, $1 || kill 9, $2 && warn "killed $1";
        } else {
                print $client "HTTP/1.0 404 $path\r\nConnection: close\r\nContent-type: text/html\r\n\r\n<big>404 $path</big>";
                warn "404 $path";
        }

}

sub start {

        warn 'tap ', network::tap();

        daemons::start_stop 'browser', $url;
        daemons::start_stop $_ foreach ( qw/dhcpd tftpd dnsd/ );
        daemons::start_stop 'kvm' unless $ENV{DEV}; # skip kvm statup when running on real device

        my $server = IO::Socket::INET->new(
                        Proto     => 'tcp',
                        LocalAddr => $server::ip,
                        LocalPort => $httpd::port,
                        Listen    => SOMAXCONN,
                        Reuse     => 1
        ) || die "can't start server on $url: $!";

        print "url $url\n";

        while (1) {
                my $client = $server->accept() || next; # ALARM trickle us
                my $request = <$client>;

                warn "request $request\n" if $debug;

                if ($request =~ m{^GET (/.*) HTTP/1.[01]}) {
                        my $path = $1;
                        my $param;
                        if ( $path =~ s{\?(.+)}{} ) {
                                foreach my $p ( split(/[&;]/, $1) ) {
                                        my ($n,$v) = split(/=/, $p, 2);
                                        $param->{$n} = $v;
                                }
                                warn "param: ",dump( $param ) if $debug;
                        }
                        get_request $client, $path, $param;
                } else {
                        print $client "HTTP/1.0 500 No method\r\nConnection: close\r\nContent-type: text/plain\r\n\r\n500 $request";
                        warn "500 $request";
                }

                print $client menu() if $client->connected;

        }

        die "server died";
}

warn "loaded";

1;
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	162	use Regexp::Common qw/net/;
21	dpavlin	42
22	dpavlin	149	sub menu {qq{
23
24			<div style="font-size: 80%; color: #888">
25			<a href=/>home</a>
26			<a href=/server>server</a>
27	dpavlin	153	<a href=/client>client</a>
28	dpavlin	149	</div>
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 $static_pids;
40	dpavlin	115	use progress_bar;
41	dpavlin	153	use config;
42	dpavlin	159	use client;
43			use log;
44	dpavlin	173	use x11;
45	dpavlin	181	use amt;
46	dpavlin	185	use boolean;
47			use daemons;
48	dpavlin	43
49	dpavlin	185	use kvm;
50			use browser;
51			use network;
52
53
54	dpavlin	42	sub static {
55			my ($client,$path) = @_;
56
57	dpavlin	65	my $full = "$server::base_dir/tftp/$path";
58	dpavlin	42
59	dpavlin	65	return if ! -f $full;
60	dpavlin	42
61	dpavlin	70	if ( my $pid = fork ) {
62			# parent
63			close($client);
64			print "http static child $pid\n";
65			$static_pids->{$pid} = $path;
66			return 1;
67			}
68
69	dpavlin	65	my $type = 'application/octet-stream';
70	dpavlin	42	$type = 'text/html' if $path =~ m{\.htm};
71			$type = 'application/javascript' if $path =~ m{\.js};
72	dpavlin	65	$type = 'text/plain' if $path =~ m{\.txt};
73	dpavlin	42
74	dpavlin	65	my $size = -s $full \|\| return;
75
76			print $client "HTTP/1.0 200 OK\r\nContent-Type: $type\r\nContent-Length: $size\r\nConnection: close\r\n\r\n";
77
78			open(my $fh, $full);
79
80	dpavlin	96	my $block = 1400; # try not to fragment packages (pxelinux seems to have problems with it)
81	dpavlin	65	my $buff;
82			my $pos = 0;
83
84	dpavlin	105	warn "static $path $type $size block: $block\n";
85	dpavlin	96
86	dpavlin	115	progress_bar::start;
87	dpavlin	105
88	dpavlin	65	while( my $len = read $fh, $buff, $block ) {
89	dpavlin	107	print $client $buff;
90	dpavlin	105	$client->flush;
91	dpavlin	65	$pos += $len;
92	dpavlin	115	progress_bar::tick( $path, $pos, $size );
93	dpavlin	42	}
94	dpavlin	65	close($fh);
95			close($client);
96	dpavlin	42
97	dpavlin	105	print STDERR "\n";
98	dpavlin	65
99	dpavlin	107	warn "exit static child";
100
101			exit(0);
102	dpavlin	42	}
103
104	dpavlin	199	sub ok {
105			qq\|HTTP/1.0 200 OK\r\nContent-Type: text/html\r\nConnection: close\r\n\r\n\| . menu()
106			}
107	dpavlin	67
108	dpavlin	199	sub redirect {
109			my $to = shift;
110			$to \|\|= $url;
111			qq\|HTTP/1.1 302 Found\r\nContent-type: text/html\r\nLocation: $to\r\n\r\n\|
112			}
113
114	dpavlin	43	sub get_request {
115			my ( $client, $path, $param ) = @_;
116
117	dpavlin	128	server->refresh;
118
119	dpavlin	96	warn "get_request $path ", $param ? dump( $param ) : '', "\n";
120	dpavlin	43
121			if ( my $found = static( $client,$path ) ) {
122			warn "static $found" if $debug;
123			} elsif ( $path eq '/' ) {
124	dpavlin	53
125	dpavlin	66	my @rows = (
126	dpavlin	64	'debug', qq\|<a href=/our/debug/\| . boolean::toggle($debug) . qq\|>$debug</a>\|,
127	dpavlin	43	);
128	dpavlin	70
129	dpavlin	96	my $debug_proc = '';
130	dpavlin	71
131	dpavlin	185	foreach my $name ( sort keys %$daemons::pids ) {
132			my $pid = $daemons::pids->{$name} \|\| next;
133	dpavlin	43
134	dpavlin	173	my $html;
135	dpavlin	66
136	dpavlin	81	my $proc = "/proc/$pid/status";
137	dpavlin	71
138	dpavlin	81	if ( -e $proc ) {
139	dpavlin	173	$html .= qq\|<a href=/start_stop/$name>$pid</a>\|;
140	dpavlin	81	if ( $debug ) {
141			$html .= qq\| <a name=$pid href=#proc-$pid>?</a>\|;
142
143			$debug_proc
144			.= qq\|<a name=proc-$pid href=#$pid>$proc</a><pre style="font-size: 10%">\|
145			. read_file($proc)
146			. qq\|</pre>\|
147			;
148			}
149
150	dpavlin	88	if ( $name->can('start_fork') ) {
151			$html .= qq\| <a href=/start_stop/kvm/$_>$_</a>\| foreach $name->start_fork;
152	dpavlin	81	}
153	dpavlin	88
154			if ( $name->can('actions') ) {
155			$html .= qq\| <a href=/action/kvm/$_>$_</a>\| foreach $name->actions;
156			}
157	dpavlin	173	} else {
158			$html .= qq\|<a href=/start_stop/$name>restart</a> $pid exited\|;
159	dpavlin	71	}
160
161	dpavlin	66	push @rows, ( $name => $html );
162			}
163
164	dpavlin	91	my $below_table = '';
165
166	dpavlin	78	warn 'static_pids: ', dump( $static_pids ) if $debug;
167	dpavlin	70	foreach my $pid ( keys %$static_pids ) {
168			my $path = $static_pids->{$pid};
169			if ( -d "/proc/$pid" ) {
170			push @rows, ( $path => qq\|<a href=/kill/static/$pid>$pid</a>\| );
171	dpavlin	91	} elsif ( $param->{clean_completed_downloads} ) {
172			delete $static_pids->{$pid}
173	dpavlin	70	} else {
174			push @rows, ( $path => "$pid competed" );
175	dpavlin	91	$below_table = qq\|<a href="/?clean_completed_downloads=1">clean completed downloads</a>\|;
176	dpavlin	70	}
177			}
178
179	dpavlin	199	print $client ok
180	dpavlin	72	, html::table( 2, @rows )
181	dpavlin	91	, $below_table
182	dpavlin	72	, html::tabs( log::mac_changes )
183			, $debug_proc
184			;
185	dpavlin	66
186	dpavlin	149	} elsif ( $path =~ m{^/server} ) {
187	dpavlin	199	print $client ok
188	dpavlin	185	, html::table( 2, map { ( $_, html::tt eval '$server::'.$_ ) } ( 'ip', 'netmask', 'ip_from', 'ip_to', 'domain_name', 'base_dir', 'conf' ) )
189	dpavlin	149	;
190	dpavlin	162	} elsif ( $path =~ m!^/client(?:/$RE{net}{IPv4}{-keep})?! ) {
191			my $ip = $1 \|\| $client->peerhost;
192	dpavlin	200
193			if ( my $new_ip = $param->{change_ip} ) {
194			client::change_ip( $ip, $new_ip );
195			$ip = $new_ip;
196			}
197
198	dpavlin	162	if ( $ip ne $server::ip ) {
199			my $hostname = client::conf( $ip, 'hostname' => $param->{hostname} );
200	dpavlin	188
201			my @table = (
202	dpavlin	199	'ip' => qq\|<input type=text name=change_ip value="$ip" onChange="document.getElementById('old_ip').style.display = '';"><span id=old_ip style="display: none; color: #888;">old: $ip<span>\|,
203			'hostname' => qq\|<input type=text name=hostname value="$hostname">\|,
204	dpavlin	188	);
205
206			my $deploy;
207
208			if ( my $mac = client::mac( $ip ) ) {
209			$deploy = client::conf( $ip, 'deploy' => $param->{deploy} );
210			push @table, (
211			'mac' => $mac,
212			'deploy' => html::select( 'deploy', $deploy, config::available )
213			);
214			$deploy = qq\|<h2>PXElinux</h2>\| . html::pre( config::for_ip( $ip ) );
215			}
216
217	dpavlin	199	print $client ok
218	dpavlin	162	, qq\|<form method=get>\|
219	dpavlin	188	, html::table( 2, @table ),
220	dpavlin	162	, qq\|<input type=submit value=change></form>\|
221	dpavlin	188	, $deploy
222	dpavlin	162	;
223	dpavlin	181
224			if ( my $amt = client::conf( $ip, 'amt' ) ) {
225	dpavlin	188	print $client qq\|<h2>AMT</h2>\|, amt::info( $amt );
226	dpavlin	181	}
227	dpavlin	162	} else {
228	dpavlin	190
229			my $arp = {
230			map {
231			my @c = split(/\s+/,$_);
232			if ( $#c == 5 ) {
233			( uc $c[3] => [ $c[0] , $c[5] ] )
234			} else {
235			}
236			} read_file('/proc/net/arp')
237			};
238
239			warn "# arp ",dump( $arp );
240
241	dpavlin	199	print $client ok
242	dpavlin	162	, qq\|<h2>Clients on $server::ip</h2>\|
243	dpavlin	190	, html::table( -5,
244			'ip', 'hostname', 'mac', 'deploy', 'arp',
245	dpavlin	162	map {
246			my $ip = $_;
247			$ip =~ s{^.+/ip/}{};
248	dpavlin	190	my $arp = $arp->{ client::mac $ip, 'clean' };
249			$arp = $arp ? $arp->[1] : '';
250			$arp =~ s{$ip}{};
251			(
252			qq\|<a href=/client/$ip>$ip</a>\|
253			, client::conf( $ip, 'hostname' )
254			, client::mac( $ip )
255			, html::tt( client::conf( $ip, 'deploy' ) )
256			, $arp
257			);
258	dpavlin	162	}
259			glob("$server::conf/ip/*")
260			)
261	dpavlin	190	, qq\|<h2>ARP</h2>\|
262	dpavlin	193	, html::table( -3, 'mac', 'dev', 'ip',
263			map {
264			my $c = $arp->{$_};
265			( html::tt( $_ ), $c->[1], $c->[0] )
266			} sort keys %$arp
267			)
268	dpavlin	162	;
269			}
270	dpavlin	43	} elsif ( $path =~ m{^/our/(\w+)/(\S+)} ) {
271			eval 'our $' . $1 . ' = ' . $2;
272			warn $@ if $@;
273	dpavlin	199	print $client redirect($url), qq\|<big>$1 = $2</big><br>Location: <a href="$url">$url</a>\|;
274	dpavlin	67	server::debug( $debug ) if $1 eq 'debug';
275	dpavlin	158	} elsif ( $path =~ m{^/start_stop/(\S+)} ) {
276	dpavlin	199	print $client redirect, daemons::start_stop($1);
277	dpavlin	88	} elsif ( $path =~ m{^/action/([^/]+)/(.+)} ) {
278			$1->$2();
279	dpavlin	199	print $client redirect;
280	dpavlin	70	} elsif ( $path =~ m{^/kill/static/(\d+)} ) {
281	dpavlin	199	print $client redirect;
282	dpavlin	86	kill 1, $1 \|\| kill 9, $2 && warn "killed $1";
283	dpavlin	43	} else {
284			print $client "HTTP/1.0 404 $path\r\nConnection: close\r\nContent-type: text/html\r\n\r\n<big>404 $path</big>";
285			warn "404 $path";
286			}
287
288			}
289	dpavlin	53
290	dpavlin	42	sub start {
291
292	dpavlin	140	warn 'tap ', network::tap();
293
294	dpavlin	189	daemons::start_stop 'browser', $url;
295			daemons::start_stop $_ foreach ( qw/dhcpd tftpd dnsd/ );
296			daemons::start_stop 'kvm' unless $ENV{DEV}; # skip kvm statup when running on real device
297
298	dpavlin	42	my $server = IO::Socket::INET->new(
299			Proto => 'tcp',
300	dpavlin	185	LocalAddr => $server::ip,
301	dpavlin	42	LocalPort => $httpd::port,
302			Listen => SOMAXCONN,
303			Reuse => 1
304	dpavlin	43	) \|\| die "can't start server on $url: $!";
305	dpavlin	42
306			print "url $url\n";
307
308	dpavlin	118	while (1) {
309			my $client = $server->accept() \|\| next; # ALARM trickle us
310	dpavlin	42	my $request = <$client>;
311
312			warn "request $request\n" if $debug;
313
314			if ($request =~ m{^GET (/.*) HTTP/1.[01]}) {
315	dpavlin	43	my $path = $1;
316	dpavlin	42	my $param;
317	dpavlin	43	if ( $path =~ s{\?(.+)}{} ) {
318	dpavlin	42	foreach my $p ( split(/[&;]/, $1) ) {
319			my ($n,$v) = split(/=/, $p, 2);
320			$param->{$n} = $v;
321			}
322			warn "param: ",dump( $param ) if $debug;
323			}
324	dpavlin	43	get_request $client, $path, $param;
325	dpavlin	42	} else {
326			print $client "HTTP/1.0 500 No method\r\nConnection: close\r\nContent-type: text/plain\r\n\r\n500 $request";
327			warn "500 $request";
328			}
329
330	dpavlin	149	print $client menu() if $client->connected;
331	dpavlin	42
332			}
333
334			die "server died";
335			}
336
337	dpavlin	45	warn "loaded";
338
339	dpavlin	42	1;