1# $OpenBSD: Client.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 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 $self->{connectproto} eq "tls"; 51 52 if (defined($self->{connectdomain}) && 53 $self->{connectdomain} ne "sendsyslog") { 54 my $cs; 55 if ($self->{connectdomain} == AF_UNIX) { 56 $cs = IO::Socket::UNIX->new( 57 Type => SOCK_DGRAM, 58 Peer => $self->{connectpath} || "/dev/log", 59 ) or die ref($self), " socket unix failed: $!"; 60 $cs->setsockopt(SOL_SOCKET, SO_SNDBUF, 10000) 61 or die ref($self), " setsockopt failed: $!"; 62 } else { 63 $SSL_ERROR = ""; 64 my $iosocket = $self->{connectproto} eq "tls" ? 65 "IO::Socket::SSL" : "IO::Socket::INET6"; 66 my $proto = $self->{connectproto}; 67 $proto = "tcp" if $proto eq "tls"; 68 $cs = $iosocket->new( 69 Proto => $proto, 70 Domain => $self->{connectdomain}, 71 PeerAddr => $self->{connectaddr}, 72 PeerPort => $self->{connectport}, 73 $self->{sslcert} ? 74 (SSL_cert_file => $self->{sslcert}) : (), 75 $self->{sslkey} ? 76 (SSL_key_file => $self->{sslkey}) : (), 77 $self->{sslca} ? 78 (SSL_ca_file => $self->{sslca}) : (), 79 SSL_verify_mode => ($self->{sslca} ? 80 SSL_VERIFY_PEER : SSL_VERIFY_NONE), 81 $self->{sslversion} ? 82 (SSL_version => $self->{sslversion}) : (), 83 $self->{sslciphers} ? 84 (SSL_cipher_list => $self->{sslciphers}) : (), 85 ) or die ref($self), " $iosocket socket connect ". 86 "failed: $!,$SSL_ERROR"; 87 if ($self->{sndbuf}) { 88 setsockopt($cs, SOL_SOCKET, SO_SNDBUF, 89 pack('i', $self->{sndbuf})) or die 90 ref($self), " set SO_SNDBUF failed: $!"; 91 } 92 if ($self->{rcvbuf}) { 93 setsockopt($cs, SOL_SOCKET, SO_RCVBUF, 94 pack('i', $self->{rcvbuf})) or die 95 ref($self), " set SO_RCVBUF failed: $!"; 96 } 97 print STDERR "connect sock: ",$cs->sockhost()," ", 98 $cs->sockport(),"\n"; 99 print STDERR "connect peer: ",$cs->peerhost()," ", 100 $cs->peerport(),"\n"; 101 if ($self->{connectproto} eq "tls") { 102 print STDERR "ssl version: ", 103 $cs->get_sslversion(),"\n"; 104 print STDERR "ssl cipher: ", 105 $cs->get_cipher(),"\n"; 106 print STDERR "ssl issuer: ", 107 $cs->peer_certificate('issuer'),"\n"; 108 print STDERR "ssl subject: ", 109 $cs->peer_certificate('subject'),"\n"; 110 print STDERR "ssl cn: ", 111 $cs->peer_certificate('cn'),"\n"; 112 } 113 } 114 115 IO::Handle::flush(\*STDOUT); 116 *STDIN = *STDOUT = $self->{cs} = $cs; 117 select(STDOUT); 118 } 119 120 if ($self->{logsock}) { 121 setlogsock($self->{logsock}) 122 or die ref($self), " setlogsock failed: $!"; 123 } 124 # we take LOG_UUCP as it is not used nowadays 125 openlog("syslogd-regress", "perror,pid", LOG_UUCP); 126} 127 1281; 129