1# $OpenBSD: Client.pm,v 1.14 2020/11/06 03:26:18 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 Client; 21use parent 'Proc'; 22use Carp; 23use Socket; 24use Socket6; 25use IO::Socket; 26use IO::Socket::INET6; 27use IO::Socket::SSL; 28use Sys::Syslog qw(:standard :extended :macros); 29 30sub new { 31 my $class = shift; 32 my %args = @_; 33 $args{ktracepid} = "ktrace" if $args{ktrace}; 34 $args{ktracepid} = $ENV{KTRACE} if $ENV{KTRACE}; 35 $args{ktracefile} ||= "client.ktrace"; 36 $args{logfile} ||= "client.log"; 37 $args{up} ||= "Openlog"; 38 my $self = Proc::new($class, %args); 39 if (defined($self->{connectdomain})) { 40 $self->{connectproto} ||= "udp"; 41 } 42 return $self; 43} 44 45sub child { 46 my $self = shift; 47 48 # TLS 1.3 writes multiple messages without acknowledgement. 49 # If the other side closes early, we want broken pipe error. 50 $SIG{PIPE} = 'IGNORE' if defined($self->{connectdomain}) && 51 $self->{connectproto} eq "tls"; 52 53 if (defined($self->{connectdomain}) && 54 $self->{connectdomain} ne "sendsyslog") { 55 my $cs; 56 if ($self->{connectdomain} == AF_UNIX) { 57 $cs = IO::Socket::UNIX->new( 58 Type => SOCK_DGRAM, 59 Peer => $self->{connectpath} || "/dev/log", 60 ) or die ref($self), " socket unix failed: $!"; 61 $cs->setsockopt(SOL_SOCKET, SO_SNDBUF, 10000) 62 or die ref($self), " setsockopt failed: $!"; 63 } else { 64 $SSL_ERROR = ""; 65 my $iosocket = $self->{connectproto} eq "tls" ? 66 "IO::Socket::SSL" : "IO::Socket::INET6"; 67 my $proto = $self->{connectproto}; 68 $proto = "tcp" if $proto eq "tls"; 69 $cs = $iosocket->new( 70 Proto => $proto, 71 Domain => $self->{connectdomain}, 72 PeerAddr => $self->{connectaddr}, 73 PeerPort => $self->{connectport}, 74 $self->{sslcert} ? 75 (SSL_cert_file => $self->{sslcert}) : (), 76 $self->{sslkey} ? 77 (SSL_key_file => $self->{sslkey}) : (), 78 $self->{sslca} ? 79 (SSL_ca_file => $self->{sslca}) : (), 80 SSL_verify_mode => ($self->{sslca} ? 81 SSL_VERIFY_PEER : SSL_VERIFY_NONE), 82 $self->{sslversion} ? 83 (SSL_version => $self->{sslversion}) : (), 84 $self->{sslciphers} ? 85 (SSL_cipher_list => $self->{sslciphers}) : (), 86 ) or die ref($self), " $iosocket socket connect ". 87 "failed: $!,$SSL_ERROR"; 88 if ($self->{sndbuf}) { 89 setsockopt($cs, SOL_SOCKET, SO_SNDBUF, 90 pack('i', $self->{sndbuf})) or die 91 ref($self), " set SO_SNDBUF failed: $!"; 92 } 93 if ($self->{rcvbuf}) { 94 setsockopt($cs, SOL_SOCKET, SO_RCVBUF, 95 pack('i', $self->{rcvbuf})) or die 96 ref($self), " set SO_RCVBUF failed: $!"; 97 } 98 print STDERR "connect sock: ",$cs->sockhost()," ", 99 $cs->sockport(),"\n"; 100 print STDERR "connect peer: ",$cs->peerhost()," ", 101 $cs->peerport(),"\n"; 102 if ($self->{connectproto} eq "tls") { 103 print STDERR "ssl version: ", 104 $cs->get_sslversion(),"\n"; 105 print STDERR "ssl cipher: ", 106 $cs->get_cipher(),"\n"; 107 print STDERR "ssl issuer: ", 108 $cs->peer_certificate('issuer'),"\n"; 109 print STDERR "ssl subject: ", 110 $cs->peer_certificate('subject'),"\n"; 111 print STDERR "ssl cn: ", 112 $cs->peer_certificate('cn'),"\n"; 113 } 114 } 115 116 IO::Handle::flush(\*STDOUT); 117 *STDIN = *STDOUT = $self->{cs} = $cs; 118 select(STDOUT); 119 } 120 121 if ($self->{logsock}) { 122 setlogsock($self->{logsock}) 123 or die ref($self), " setlogsock failed: $!"; 124 } 125 # we take LOG_UUCP as it is not used nowadays 126 openlog("syslogd-regress", "perror,pid", LOG_UUCP); 127} 128 1291; 130