1# $OpenBSD: Server.pm,v 1.13 2020/10/16 22:46:45 bluhm Exp $ 2 3# Copyright (c) 2010-2020 Alexander Bluhm <bluhm@openbsd.org> 4# 5# Permission to use, copy, modify, and distribute this software for any 6# purpose with or without fee is hereby granted, provided that the above 7# copyright notice and this permission notice appear in all copies. 8# 9# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 10# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 11# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 12# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 13# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 14# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 15# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 16 17use strict; 18use warnings; 19 20package Server; 21use parent 'Proc'; 22use Carp; 23use Socket; 24use Socket6; 25use IO::Socket; 26use IO::Socket::INET6; 27use IO::Socket::SSL; 28 29sub new { 30 my $class = shift; 31 my %args = @_; 32 $args{ktracepid} = "ktrace" if $args{ktrace}; 33 $args{ktracepid} = $ENV{KTRACE} if $ENV{KTRACE}; 34 $args{ktracefile} ||= "server.ktrace"; 35 $args{logfile} ||= "server.log"; 36 $args{up} ||= "Accepted"; 37 my $self = Proc::new($class, %args); 38 $self->{listenproto} ||= "udp"; 39 defined($self->{listendomain}) 40 or croak "$class listen domain not given"; 41 return $self->listen(); 42} 43 44sub listen { 45 my $self = shift; 46 $SSL_ERROR = ""; 47 my $iosocket = $self->{listenproto} eq "tls" ? 48 "IO::Socket::SSL" : "IO::Socket::INET6"; 49 my $proto = $self->{listenproto}; 50 $proto = "tcp" if $proto eq "tls"; 51 my $ls = $iosocket->new( 52 Proto => $proto, 53 ReuseAddr => 1, 54 Domain => $self->{listendomain}, 55 $self->{listenaddr} ? (LocalAddr => $self->{listenaddr}) : (), 56 $self->{listenport} ? (LocalPort => $self->{listenport}) : (), 57 SSL_server => 1, 58 SSL_key_file => "server.key", 59 SSL_cert_file => "server.crt", 60 SSL_ca_file => ($self->{sslca} || "ca.crt"), 61 SSL_verify_mode => ($self->{sslca} ? 62 SSL_VERIFY_PEER : SSL_VERIFY_NONE), 63 $self->{sslca} ? (SSL_verifycn_scheme => "none") : (), 64 $self->{sslversion} ? (SSL_version => $self->{sslversion}) : (), 65 $self->{sslciphers} ? (SSL_cipher_list => $self->{sslciphers}) : (), 66 ) or die ref($self), " $iosocket socket failed: $!,$SSL_ERROR"; 67 if ($self->{sndbuf}) { 68 setsockopt($ls, SOL_SOCKET, SO_SNDBUF, 69 pack('i', $self->{sndbuf})) 70 or die ref($self), " set SO_SNDBUF failed: $!"; 71 } 72 if ($self->{rcvbuf}) { 73 setsockopt($ls, SOL_SOCKET, SO_RCVBUF, 74 pack('i', $self->{rcvbuf})) 75 or die ref($self), " set SO_RCVBUF failed: $!"; 76 } 77 if ($self->{listenproto} ne "udp") { 78 listen($ls, 1) 79 or die ref($self), " socket listen failed: $!"; 80 } 81 my $log = $self->{log}; 82 print $log "listen sock: ",$ls->sockhost()," ",$ls->sockport(),"\n"; 83 $self->{listenaddr} = $ls->sockhost() unless $self->{listenaddr}; 84 $self->{listenport} = $ls->sockport() unless $self->{listenport}; 85 $self->{ls} = $ls; 86 return $self; 87} 88 89sub close { 90 my $self = shift; 91 $self->{ls}->close() 92 or die ref($self)," ",ref($self->{ls}), 93 " socket close failed: $!,$SSL_ERROR"; 94 delete $self->{ls}; 95 return $self; 96} 97 98sub run { 99 my $self = shift; 100 Proc::run($self, @_); 101 return $self->close(); 102} 103 104sub child { 105 my $self = shift; 106 107 # TLS 1.3 writes multiple messages without acknowledgement. 108 # If the other side closes early, we want broken pipe error. 109 $SIG{PIPE} = 'IGNORE' if $self->{listenproto} eq "tls"; 110 111 my $as = $self->{ls}; 112 if ($self->{listenproto} ne "udp") { 113 $as = $self->{ls}->accept() 114 or die ref($self)," ",ref($self->{ls}), 115 " socket accept failed: $!,$SSL_ERROR"; 116 print STDERR "accept sock: ",$as->sockhost()," ", 117 $as->sockport(),"\n"; 118 print STDERR "accept peer: ",$as->peerhost()," ", 119 $as->peerport(),"\n"; 120 } 121 if ($self->{listenproto} eq "tls") { 122 print STDERR "ssl version: ",$as->get_sslversion(),"\n"; 123 print STDERR "ssl cipher: ",$as->get_cipher(),"\n"; 124 print STDERR "ssl subject: ", $as->peer_certificate("subject") 125 ,"\n" if $self->{sslca}; 126 } 127 128 *STDIN = *STDOUT = $self->{as} = $as; 129} 130 1311; 132