1*d8bc0d06Sbluhm# $OpenBSD: Server.pm,v 1.13 2020/10/16 22:46:45 bluhm Exp $ 21f53c19fSbluhm 3df3b6e8eSbluhm# Copyright (c) 2010-2020 Alexander Bluhm <bluhm@openbsd.org> 41f53c19fSbluhm# 51f53c19fSbluhm# Permission to use, copy, modify, and distribute this software for any 61f53c19fSbluhm# purpose with or without fee is hereby granted, provided that the above 71f53c19fSbluhm# copyright notice and this permission notice appear in all copies. 81f53c19fSbluhm# 91f53c19fSbluhm# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 101f53c19fSbluhm# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 111f53c19fSbluhm# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 121f53c19fSbluhm# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 131f53c19fSbluhm# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 141f53c19fSbluhm# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 151f53c19fSbluhm# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 161f53c19fSbluhm 171f53c19fSbluhmuse strict; 181f53c19fSbluhmuse warnings; 191f53c19fSbluhm 201f53c19fSbluhmpackage Server; 211f53c19fSbluhmuse parent 'Proc'; 221f53c19fSbluhmuse Carp; 231f53c19fSbluhmuse Socket; 241f53c19fSbluhmuse Socket6; 251f53c19fSbluhmuse IO::Socket; 261f53c19fSbluhmuse IO::Socket::INET6; 271f53c19fSbluhmuse IO::Socket::SSL; 281f53c19fSbluhm 291f53c19fSbluhmsub new { 301f53c19fSbluhm my $class = shift; 311f53c19fSbluhm my %args = @_; 32df3b6e8eSbluhm $args{ktracepid} = "ktrace" if $args{ktrace}; 33df3b6e8eSbluhm $args{ktracepid} = $ENV{KTRACE} if $ENV{KTRACE}; 341f53c19fSbluhm $args{ktracefile} ||= "server.ktrace"; 351f53c19fSbluhm $args{logfile} ||= "server.log"; 361f53c19fSbluhm $args{up} ||= "Accepted"; 371f53c19fSbluhm my $self = Proc::new($class, %args); 38a0156d40Sbluhm $self->{listenproto} ||= "udp"; 3973e391cdSbluhm defined($self->{listendomain}) 401f53c19fSbluhm or croak "$class listen domain not given"; 416d1e9c8eSbluhm return $self->listen(); 426d1e9c8eSbluhm} 436d1e9c8eSbluhm 446d1e9c8eSbluhmsub listen { 456d1e9c8eSbluhm my $self = shift; 461f53c19fSbluhm $SSL_ERROR = ""; 47a0156d40Sbluhm my $iosocket = $self->{listenproto} eq "tls" ? 481f53c19fSbluhm "IO::Socket::SSL" : "IO::Socket::INET6"; 49a0156d40Sbluhm my $proto = $self->{listenproto}; 501f53c19fSbluhm $proto = "tcp" if $proto eq "tls"; 511f53c19fSbluhm my $ls = $iosocket->new( 521f53c19fSbluhm Proto => $proto, 531f53c19fSbluhm ReuseAddr => 1, 541f53c19fSbluhm Domain => $self->{listendomain}, 551f53c19fSbluhm $self->{listenaddr} ? (LocalAddr => $self->{listenaddr}) : (), 561f53c19fSbluhm $self->{listenport} ? (LocalPort => $self->{listenport}) : (), 57027fd6b9Sbluhm SSL_server => 1, 582bccb94aSbluhm SSL_key_file => "server.key", 592bccb94aSbluhm SSL_cert_file => "server.crt", 6015bf65a9Sbluhm SSL_ca_file => ($self->{sslca} || "ca.crt"), 6115bf65a9Sbluhm SSL_verify_mode => ($self->{sslca} ? 6215bf65a9Sbluhm SSL_VERIFY_PEER : SSL_VERIFY_NONE), 6315bf65a9Sbluhm $self->{sslca} ? (SSL_verifycn_scheme => "none") : (), 64dbe795f4Sbluhm $self->{sslversion} ? (SSL_version => $self->{sslversion}) : (), 65dbe795f4Sbluhm $self->{sslciphers} ? (SSL_cipher_list => $self->{sslciphers}) : (), 66ef01d180Sbluhm ) or die ref($self), " $iosocket socket failed: $!,$SSL_ERROR"; 6791c6fcb1Sbluhm if ($self->{sndbuf}) { 6891c6fcb1Sbluhm setsockopt($ls, SOL_SOCKET, SO_SNDBUF, 6991c6fcb1Sbluhm pack('i', $self->{sndbuf})) 7091c6fcb1Sbluhm or die ref($self), " set SO_SNDBUF failed: $!"; 7191c6fcb1Sbluhm } 7291c6fcb1Sbluhm if ($self->{rcvbuf}) { 7391c6fcb1Sbluhm setsockopt($ls, SOL_SOCKET, SO_RCVBUF, 7491c6fcb1Sbluhm pack('i', $self->{rcvbuf})) 7591c6fcb1Sbluhm or die ref($self), " set SO_RCVBUF failed: $!"; 7691c6fcb1Sbluhm } 772bccb94aSbluhm if ($self->{listenproto} ne "udp") { 781f53c19fSbluhm listen($ls, 1) 79ef01d180Sbluhm or die ref($self), " socket listen failed: $!"; 801f53c19fSbluhm } 811f53c19fSbluhm my $log = $self->{log}; 821f53c19fSbluhm print $log "listen sock: ",$ls->sockhost()," ",$ls->sockport(),"\n"; 831f53c19fSbluhm $self->{listenaddr} = $ls->sockhost() unless $self->{listenaddr}; 841f53c19fSbluhm $self->{listenport} = $ls->sockport() unless $self->{listenport}; 851f53c19fSbluhm $self->{ls} = $ls; 861f53c19fSbluhm return $self; 871f53c19fSbluhm} 881f53c19fSbluhm 896d1e9c8eSbluhmsub close { 906d1e9c8eSbluhm my $self = shift; 916d1e9c8eSbluhm $self->{ls}->close() 926d1e9c8eSbluhm or die ref($self)," ",ref($self->{ls}), 936d1e9c8eSbluhm " socket close failed: $!,$SSL_ERROR"; 946d1e9c8eSbluhm delete $self->{ls}; 956d1e9c8eSbluhm return $self; 966d1e9c8eSbluhm} 976d1e9c8eSbluhm 986d1e9c8eSbluhmsub run { 996d1e9c8eSbluhm my $self = shift; 1006d1e9c8eSbluhm Proc::run($self, @_); 1016d1e9c8eSbluhm return $self->close(); 1026d1e9c8eSbluhm} 1036d1e9c8eSbluhm 1041f53c19fSbluhmsub child { 1051f53c19fSbluhm my $self = shift; 1061f53c19fSbluhm 107*d8bc0d06Sbluhm # TLS 1.3 writes multiple messages without acknowledgement. 108*d8bc0d06Sbluhm # If the other side closes early, we want broken pipe error. 109*d8bc0d06Sbluhm $SIG{PIPE} = 'IGNORE' if $self->{listenproto} eq "tls"; 110*d8bc0d06Sbluhm 1111f53c19fSbluhm my $as = $self->{ls}; 112a0156d40Sbluhm if ($self->{listenproto} ne "udp") { 1131f53c19fSbluhm $as = $self->{ls}->accept() 1142bccb94aSbluhm or die ref($self)," ",ref($self->{ls}), 1152bccb94aSbluhm " socket accept failed: $!,$SSL_ERROR"; 1161f53c19fSbluhm print STDERR "accept sock: ",$as->sockhost()," ", 1171f53c19fSbluhm $as->sockport(),"\n"; 1181f53c19fSbluhm print STDERR "accept peer: ",$as->peerhost()," ", 1191f53c19fSbluhm $as->peerport(),"\n"; 1201f53c19fSbluhm } 121dbe795f4Sbluhm if ($self->{listenproto} eq "tls") { 122dbe795f4Sbluhm print STDERR "ssl version: ",$as->get_sslversion(),"\n"; 123dbe795f4Sbluhm print STDERR "ssl cipher: ",$as->get_cipher(),"\n"; 124476918efSbluhm print STDERR "ssl subject: ", $as->peer_certificate("subject") 12515bf65a9Sbluhm ,"\n" if $self->{sslca}; 126dbe795f4Sbluhm } 1271f53c19fSbluhm 1281f53c19fSbluhm *STDIN = *STDOUT = $self->{as} = $as; 1291f53c19fSbluhm} 1301f53c19fSbluhm 1311f53c19fSbluhm1; 132