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);
}

my $ok =       qq|HTTP/1.0 200 OK\r\nContent-Type: text/html\r\nConnection: close\r\n\r\n| . menu();
my $redirect = qq|HTTP/1.1 302 Found\r\nContent-type: text/html\r\nLocation: $url\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 ( $ip ne $server::ip ) {
                        my $hostname = client::conf( $ip, 'hostname' => $param->{hostname} );

                        my @table = (
                                'ip' => $ip,
                                'hostname' => qq|<input type=text name=hostname value=$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 {
                        print $client $ok
                                , qq|<h2>Clients on $server::ip</h2>|
                                , html::table( -4,
                                        'ip', 'mac', 'hostname', 'deploy',
                                        map {
                                                my $ip = $_;
                                                $ip =~ s{^.+/ip/}{};
                                                ( qq|<a href=/client/$ip>$ip</a>|, client::mac($ip), client::conf( $ip, 'hostname' ), html::tt client::conf( $ip, 'deploy' ) );
                                        }
                                        glob("$server::conf/ip/*") 
                                )
                                ;
                }
        } elsif ( $path =~ m{^/our/(\w+)/(\S+)} ) {
                eval 'our $' . $1 . ' = ' . $2;
                warn $@ if $@;
                print $client $redirect, 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();

        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";

        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

        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	162	my $ok = qq\|HTTP/1.0 200 OK\r\nContent-Type: text/html\r\nConnection: close\r\n\r\n\| . menu();
105	dpavlin	67	my $redirect = qq\|HTTP/1.1 302 Found\r\nContent-type: text/html\r\nLocation: $url\r\n\r\n\|;
106
107	dpavlin	43	sub get_request {
108			my ( $client, $path, $param ) = @_;
109
110	dpavlin	128	server->refresh;
111
112	dpavlin	96	warn "get_request $path ", $param ? dump( $param ) : '', "\n";
113	dpavlin	43
114			if ( my $found = static( $client,$path ) ) {
115			warn "static $found" if $debug;
116			} elsif ( $path eq '/' ) {
117	dpavlin	53
118	dpavlin	66	my @rows = (
119	dpavlin	64	'debug', qq\|<a href=/our/debug/\| . boolean::toggle($debug) . qq\|>$debug</a>\|,
120	dpavlin	43	);
121	dpavlin	70
122	dpavlin	96	my $debug_proc = '';
123	dpavlin	71
124	dpavlin	185	foreach my $name ( sort keys %$daemons::pids ) {
125			my $pid = $daemons::pids->{$name} \|\| next;
126	dpavlin	43
127	dpavlin	173	my $html;
128	dpavlin	66
129	dpavlin	81	my $proc = "/proc/$pid/status";
130	dpavlin	71
131	dpavlin	81	if ( -e $proc ) {
132	dpavlin	173	$html .= qq\|<a href=/start_stop/$name>$pid</a>\|;
133	dpavlin	81	if ( $debug ) {
134			$html .= qq\| <a name=$pid href=#proc-$pid>?</a>\|;
135
136			$debug_proc
137			.= qq\|<a name=proc-$pid href=#$pid>$proc</a><pre style="font-size: 10%">\|
138			. read_file($proc)
139			. qq\|</pre>\|
140			;
141			}
142
143	dpavlin	88	if ( $name->can('start_fork') ) {
144			$html .= qq\| <a href=/start_stop/kvm/$_>$_</a>\| foreach $name->start_fork;
145	dpavlin	81	}
146	dpavlin	88
147			if ( $name->can('actions') ) {
148			$html .= qq\| <a href=/action/kvm/$_>$_</a>\| foreach $name->actions;
149			}
150	dpavlin	173	} else {
151			$html .= qq\|<a href=/start_stop/$name>restart</a> $pid exited\|;
152	dpavlin	71	}
153
154	dpavlin	66	push @rows, ( $name => $html );
155			}
156
157	dpavlin	91	my $below_table = '';
158
159	dpavlin	78	warn 'static_pids: ', dump( $static_pids ) if $debug;
160	dpavlin	70	foreach my $pid ( keys %$static_pids ) {
161			my $path = $static_pids->{$pid};
162			if ( -d "/proc/$pid" ) {
163			push @rows, ( $path => qq\|<a href=/kill/static/$pid>$pid</a>\| );
164	dpavlin	91	} elsif ( $param->{clean_completed_downloads} ) {
165			delete $static_pids->{$pid}
166	dpavlin	70	} else {
167			push @rows, ( $path => "$pid competed" );
168	dpavlin	91	$below_table = qq\|<a href="/?clean_completed_downloads=1">clean completed downloads</a>\|;
169	dpavlin	70	}
170			}
171
172	dpavlin	72	print $client $ok
173			, html::table( 2, @rows )
174	dpavlin	91	, $below_table
175	dpavlin	72	, html::tabs( log::mac_changes )
176			, $debug_proc
177			;
178	dpavlin	66
179	dpavlin	149	} elsif ( $path =~ m{^/server} ) {
180			print $client $ok
181	dpavlin	185	, html::table( 2, map { ( $_, html::tt eval '$server::'.$_ ) } ( 'ip', 'netmask', 'ip_from', 'ip_to', 'domain_name', 'base_dir', 'conf' ) )
182	dpavlin	149	;
183	dpavlin	162	} elsif ( $path =~ m!^/client(?:/$RE{net}{IPv4}{-keep})?! ) {
184			my $ip = $1 \|\| $client->peerhost;
185			if ( $ip ne $server::ip ) {
186			my $hostname = client::conf( $ip, 'hostname' => $param->{hostname} );
187	dpavlin	188
188			my @table = (
189			'ip' => $ip,
190			'hostname' => qq\|<input type=text name=hostname value=$hostname>\|,
191			);
192
193			my $deploy;
194
195			if ( my $mac = client::mac( $ip ) ) {
196			$deploy = client::conf( $ip, 'deploy' => $param->{deploy} );
197			push @table, (
198			'mac' => $mac,
199			'deploy' => html::select( 'deploy', $deploy, config::available )
200			);
201			$deploy = qq\|<h2>PXElinux</h2>\| . html::pre( config::for_ip( $ip ) );
202			}
203
204	dpavlin	162	print $client $ok
205			, qq\|<form method=get>\|
206	dpavlin	188	, html::table( 2, @table ),
207	dpavlin	162	, qq\|<input type=submit value=change></form>\|
208	dpavlin	188	, $deploy
209	dpavlin	162	;
210	dpavlin	181
211			if ( my $amt = client::conf( $ip, 'amt' ) ) {
212	dpavlin	188	print $client qq\|<h2>AMT</h2>\|, amt::info( $amt );
213	dpavlin	181	}
214	dpavlin	162	} else {
215			print $client $ok
216			, qq\|<h2>Clients on $server::ip</h2>\|
217	dpavlin	173	, html::table( -4,
218			'ip', 'mac', 'hostname', 'deploy',
219	dpavlin	162	map {
220			my $ip = $_;
221			$ip =~ s{^.+/ip/}{};
222	dpavlin	185	( qq\|<a href=/client/$ip>$ip</a>\|, client::mac($ip), client::conf( $ip, 'hostname' ), html::tt client::conf( $ip, 'deploy' ) );
223	dpavlin	162	}
224			glob("$server::conf/ip/*")
225			)
226			;
227			}
228	dpavlin	43	} elsif ( $path =~ m{^/our/(\w+)/(\S+)} ) {
229			eval 'our $' . $1 . ' = ' . $2;
230			warn $@ if $@;
231	dpavlin	67	print $client $redirect, qq\|<big>$1 = $2</big><br>Location: <a href="$url">$url</a>\|;
232			server::debug( $debug ) if $1 eq 'debug';
233	dpavlin	158	} elsif ( $path =~ m{^/start_stop/(\S+)} ) {
234	dpavlin	185	print $client $redirect, daemons::start_stop($1);
235	dpavlin	88	} elsif ( $path =~ m{^/action/([^/]+)/(.+)} ) {
236			$1->$2();
237			print $client $redirect;
238	dpavlin	70	} elsif ( $path =~ m{^/kill/static/(\d+)} ) {
239			print $client $redirect;
240	dpavlin	86	kill 1, $1 \|\| kill 9, $2 && warn "killed $1";
241	dpavlin	43	} else {
242			print $client "HTTP/1.0 404 $path\r\nConnection: close\r\nContent-type: text/html\r\n\r\n<big>404 $path</big>";
243			warn "404 $path";
244			}
245
246			}
247	dpavlin	53
248	dpavlin	42	sub start {
249
250	dpavlin	140	warn 'tap ', network::tap();
251
252	dpavlin	42	my $server = IO::Socket::INET->new(
253			Proto => 'tcp',
254	dpavlin	185	LocalAddr => $server::ip,
255	dpavlin	42	LocalPort => $httpd::port,
256			Listen => SOMAXCONN,
257			Reuse => 1
258	dpavlin	43	) \|\| die "can't start server on $url: $!";
259	dpavlin	42
260			print "url $url\n";
261
262	dpavlin	185	daemons::start_stop 'browser', $url;
263			daemons::start_stop $_ foreach ( qw/dhcpd tftpd dnsd/ );
264			daemons::start_stop 'kvm' unless $ENV{DEV}; # skip kvm statup when running on real device
265	dpavlin	42
266	dpavlin	118	while (1) {
267			my $client = $server->accept() \|\| next; # ALARM trickle us
268	dpavlin	42	my $request = <$client>;
269
270			warn "request $request\n" if $debug;
271
272			if ($request =~ m{^GET (/.*) HTTP/1.[01]}) {
273	dpavlin	43	my $path = $1;
274	dpavlin	42	my $param;
275	dpavlin	43	if ( $path =~ s{\?(.+)}{} ) {
276	dpavlin	42	foreach my $p ( split(/[&;]/, $1) ) {
277			my ($n,$v) = split(/=/, $p, 2);
278			$param->{$n} = $v;
279			}
280			warn "param: ",dump( $param ) if $debug;
281			}
282	dpavlin	43	get_request $client, $path, $param;
283	dpavlin	42	} else {
284			print $client "HTTP/1.0 500 No method\r\nConnection: close\r\nContent-type: text/plain\r\n\r\n500 $request";
285			warn "500 $request";
286			}
287
288	dpavlin	149	print $client menu() if $client->connected;
289	dpavlin	42
290			}
291
292			die "server died";
293			}
294
295	dpavlin	45	warn "loaded";
296
297	dpavlin	42	1;