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package httpd; |
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|
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use warnings; |
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use strict; |
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use autodie; |
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|
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=head1 httpd |
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|
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Start with: |
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|
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perl -Ilib/PXElator -Mhttpd -e httpd::start |
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|
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=cut |
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|
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use Data::Dump qw/dump/; |
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use Carp qw/confess/; |
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use File::Slurp; |
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#use JSON; |
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use IO::Socket::INET; |
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use Module::Refresh; |
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|
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our $pids; |
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$pids = { httpd => $$ } unless defined $pids; # keep pids on refresh |
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|
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sub DESTROY { |
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warn "pids ",dump( $pids ); |
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foreach ( values %$pids ) { |
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warn "kill $_"; |
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kill 1,$_ || kill 9, $_; |
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} |
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} |
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|
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our $port = 7777; |
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|
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use server; |
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our $debug = server::debug; |
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our $url = "http://$server::ip:$port"; |
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|
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use html; |
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our $static_pids; |
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use progress_bar; |
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|
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sub static { |
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my ($client,$path) = @_; |
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|
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my $full = "$server::base_dir/tftp/$path"; |
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|
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return if ! -f $full; |
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|
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if ( my $pid = fork ) { |
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# parent |
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close($client); |
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print "http static child $pid\n"; |
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$static_pids->{$pid} = $path; |
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return 1; |
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} |
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|
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my $type = 'application/octet-stream'; |
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$type = 'text/html' if $path =~ m{\.htm}; |
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$type = 'application/javascript' if $path =~ m{\.js}; |
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$type = 'text/plain' if $path =~ m{\.txt}; |
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|
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my $size = -s $full || return; |
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|
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print $client "HTTP/1.0 200 OK\r\nContent-Type: $type\r\nContent-Length: $size\r\nConnection: close\r\n\r\n"; |
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|
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open(my $fh, $full); |
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|
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my $block = 1400; # try not to fragment packages (pxelinux seems to have problems with it) |
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my $buff; |
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my $pos = 0; |
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|
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warn "static $path $type $size block: $block\n"; |
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|
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progress_bar::start; |
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|
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while( my $len = read $fh, $buff, $block ) { |
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print $client $buff; |
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$client->flush; |
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$pos += $len; |
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progress_bar::tick( $path, $pos, $size ); |
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} |
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close($fh); |
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close($client); |
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|
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print STDERR "\n"; |
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|
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warn "exit static child"; |
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|
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exit(0); |
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} |
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|
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use boolean; |
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|
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use screen; |
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use kvm; |
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|
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$SIG{CHLD} = 'IGNORE'; |
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|
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sub start_stop { |
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my $daemon = shift; |
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my $pid = $pids->{$daemon}; |
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|
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warn "start_stop $daemon $pid\n"; |
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|
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if ( $pid =~ m{^\d+$} ) { |
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my $pstree = `pstree -p $pid`; |
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my @pids = $pstree =~ m{\((\d+)\)}g; |
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warn "pstree $pstree pids ",dump( @pids ); |
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kill 1, $_ foreach reverse @pids; |
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$pids->{$daemon} = 'stopped'; |
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return qq|$daemon pid $pid stopped|; |
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} else { |
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if ( $pid = fork ) { |
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# parent |
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$pids->{$daemon} = $pid; |
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warn "forked $daemon $pid\n"; |
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return qq|$daemon pid $pid started|; |
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} elsif ( defined $pid ) { |
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# child |
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my $invoke = 'start'; |
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$invoke = $1 if $daemon =~ s{/(.+)}{}; |
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my $eval = $daemon . '::' . $invoke . '(' . ( @_ ? dump(@_) : '' ) . ')'; |
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warn "eval $eval"; |
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eval $eval; |
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warn "can't start $daemon: $@" if $@; |
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exit; |
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} else { |
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die "fork error $!"; |
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} |
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} |
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} |
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|
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my $ok = qq|HTTP/1.0 200 OK\r\nContent-Type: text/html\r\nConnection: close\r\n\r\n|; |
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my $redirect = qq|HTTP/1.1 302 Found\r\nContent-type: text/html\r\nLocation: $url\r\n\r\n|; |
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|
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sub get_request { |
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my ( $client, $path, $param ) = @_; |
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|
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warn "get_request $path ", $param ? dump( $param ) : '', "\n"; |
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|
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if ( my $found = static( $client,$path ) ) { |
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warn "static $found" if $debug; |
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} elsif ( $path eq '/' ) { |
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|
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my $screen = $pids->{screen} ? qq|stop <tt>$pids->{screen}</tt>| : 'start'; |
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my $kvm = $pids->{kvm} ? qq|stop <tt>$pids->{kvm}</tt>| : |
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$pids->{screen} ? qq|start| : qq|start screen first|; |
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|
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my @rows = ( |
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'ip', html::tt( $server::ip ), |
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'netmask', html::tt( $server::netmask ), |
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|
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'debug', qq|<a href=/our/debug/| . boolean::toggle($debug) . qq|>$debug</a>|, |
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); |
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|
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my $debug_proc = ''; |
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|
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warn 'pids: ', dump( $pids ) if $debug; |
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foreach my $name ( sort keys %$pids ) { |
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my $pid = $pids->{$name} || next; |
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|
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my $html = qq|<a href=/start_stop/$name>$pid</a>|; |
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|
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my $proc = "/proc/$pid/status"; |
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|
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if ( -e $proc ) { |
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if ( $debug ) { |
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$html .= qq| <a name=$pid href=#proc-$pid>?</a>|; |
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|
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$debug_proc |
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.= qq|<a name=proc-$pid href=#$pid>$proc</a><pre style="font-size: 10%">| |
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. read_file($proc) |
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. qq|</pre>| |
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; |
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} |
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|
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if ( $name->can('start_fork') ) { |
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$html .= qq| <a href=/start_stop/kvm/$_>$_</a>| foreach $name->start_fork; |
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} |
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|
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if ( $name->can('actions') ) { |
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$html .= qq| <a href=/action/kvm/$_>$_</a>| foreach $name->actions; |
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} |
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} |
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|
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push @rows, ( $name => $html ); |
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} |
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|
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my $below_table = ''; |
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|
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warn 'static_pids: ', dump( $static_pids ) if $debug; |
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foreach my $pid ( keys %$static_pids ) { |
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my $path = $static_pids->{$pid}; |
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if ( -d "/proc/$pid" ) { |
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push @rows, ( $path => qq|<a href=/kill/static/$pid>$pid</a>| ); |
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} elsif ( $param->{clean_completed_downloads} ) { |
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delete $static_pids->{$pid} |
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} else { |
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push @rows, ( $path => "$pid competed" ); |
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$below_table = qq|<a href="/?clean_completed_downloads=1">clean completed downloads</a>|; |
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} |
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} |
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|
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print $client $ok |
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, html::table( 2, @rows ) |
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, $below_table |
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, html::tabs( log::mac_changes ) |
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, $debug_proc |
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; |
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|
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} elsif ( $path =~ m{^/our/(\w+)/(\S+)} ) { |
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eval 'our $' . $1 . ' = ' . $2; |
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warn $@ if $@; |
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print $client $redirect, qq|<big>$1 = $2</big><br>Location: <a href="$url">$url</a>|; |
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server::debug( $debug ) if $1 eq 'debug'; |
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} elsif ( $path =~ m{^/start_stop/((?:screen|kvm).*)} ) { # XXX we don't want to stop all classes |
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print $client $redirect, start_stop($1); |
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} elsif ( $path =~ m{^/action/([^/]+)/(.+)} ) { |
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$1->$2(); |
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print $client $redirect; |
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} elsif ( $path =~ m{^/kill/static/(\d+)} ) { |
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print $client $redirect; |
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kill 1, $1 || kill 9, $2 && warn "killed $1"; |
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} elsif ( $path eq '/exit' ) { |
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# DESTROY; |
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exit 0; |
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} elsif ( $path =~ m{/boot} ) { |
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print $client qq{$ok |
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#!gpxe |
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imgfree |
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login |
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chain http://$server::ip:$httpd::port/ |
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|
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}; |
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} else { |
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print $client "HTTP/1.0 404 $path\r\nConnection: close\r\nContent-type: text/html\r\n\r\n<big>404 $path</big>"; |
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warn "404 $path"; |
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} |
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|
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} |
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|
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use browser; |
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|
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sub start { |
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|
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my $server = IO::Socket::INET->new( |
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Proto => 'tcp', |
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LocalPort => $httpd::port, |
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Listen => SOMAXCONN, |
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Reuse => 1 |
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) || die "can't start server on $url: $!"; |
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|
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print "url $url\n"; |
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|
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start_stop 'browser', $url; |
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start_stop 'screen'; |
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start_stop 'kvm'; |
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|
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while (my $client = $server->accept()) { |
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$client->autoflush(1); |
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my $request = <$client>; |
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|
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warn "request $request\n" if $debug; |
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|
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Module::Refresh->refresh; |
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|
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if ($request =~ m{^GET (/.*) HTTP/1.[01]}) { |
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my $path = $1; |
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my $param; |
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if ( $path =~ s{\?(.+)}{} ) { |
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foreach my $p ( split(/[&;]/, $1) ) { |
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my ($n,$v) = split(/=/, $p, 2); |
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$param->{$n} = $v; |
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} |
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warn "param: ",dump( $param ) if $debug; |
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} |
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get_request $client, $path, $param; |
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} else { |
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print $client "HTTP/1.0 500 No method\r\nConnection: close\r\nContent-type: text/plain\r\n\r\n500 $request"; |
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warn "500 $request"; |
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} |
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|
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print $client qq{ |
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<div style="font-size: 80%; color: #888"> |
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<a href="">reload</a> |
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<a href=/>index</a> |
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<a href=/exit>exit</a> |
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</div> |
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} if $client->connected; |
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|
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} |
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|
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die "server died"; |
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} |
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|
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warn "loaded"; |
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|
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1; |
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