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1065 lines
25 KiB
Perl
1065 lines
25 KiB
Perl
#!/usr/bin/perl -w
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# (c) 2006-2007 by CAcert.org
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# Server (running on the certificate machine)
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use strict;
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use Device::SerialPort qw( :PARAM :STAT 0.07 );
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use POSIX;
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use IO::Select;
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use File::CounterFile;
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use Time::HiRes q(usleep);
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use IPC::Open3;
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use File::Copy;
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use Digest::SHA1 qw(sha1_hex);
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#Protocol version:
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my $ver=1;
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my $debug=0;
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my $paranoid=1;
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my $serialport="/dev/ttyUSB0";
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#my $serialport="/dev/ttyS0";
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my $CPSUrl="http://www.cacert.org/cps.php";
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my $OCSPUrl="http://ocsp.cacert.org/";
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my $gpgbin="/usr/bin/gpg";
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my $opensslbin="/usr/bin/openssl";
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my $work="./work";
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#my $gpgID='gpgtest@cacert.at';
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my $gpgID='gpg@cacert.org';
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my %PkiSystems=(
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"1"=>"X.509",
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"2"=>"OpenPGP");
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my %rootkeys=(
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"1"=>5, #X.509
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"2"=>1);#OpenPGP
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my %hashes=(
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"0"=>"",
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"1"=>"-md md5",
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"2"=>"-md sha1",
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"3"=>"-md rmd160",
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"8"=>"-md sha256",
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"9"=>"-md sha384",
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"10"=>"-md sha512");
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my %templates=(
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"0"=>"client.cnf",
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"1"=>"client-org.cnf",
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"2"=>"client-codesign.cnf",
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"3"=>"client-machine.cnf",
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"4"=>"client-ads.cnf",
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"5"=>"server.cnf",
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"6"=>"server-org.cnf",
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"7"=>"server-jabber.cnf",
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"8"=>"ocsp.cnf",
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"9"=>"timestamp.cnf",
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"10"=>"proxy.cnf",
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"11"=>"subca.cnf"
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);
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my $starttime=5*60; # 5 minutes
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my %currenthash=();
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#End of configurations
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########################################################
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mkdir "$work",0700;
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mkdir "currentcrls";
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$ENV{'PATH'}='/usr/bin/:/bin';
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$ENV{'IFS'}="\n";
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$ENV{'LD_PRELOAD'}='';
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$ENV{'LD_LIBRARY_PATH'}='';
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$ENV{'LANG'}='';
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#Logging functions:
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sub SysLog($)
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{
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my $date=strftime("%Y-%m-%d",localtime);
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open LOG,">>logfile$date.txt";
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return if(not defined($_[0]));
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my $timestamp=strftime("%Y-%m-%d %H:%M:%S",localtime);
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#$syslog->write($_[0]."\x00");
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print LOG "$timestamp $_[0]";
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# print "$timestamp $_[0]";
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flush LOG;
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close LOG;
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}
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sub Error($)
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{
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SysLog($_[0]);
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if($paranoid)
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{
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die $_[0];
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}
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}
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sub readfile($)
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{
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my $olds=$/;
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open READIN,"<$_[0]";
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undef $/;
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my $content=<READIN>;
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close READIN;
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$/=$olds;
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return $content;
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}
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#Hexdump function: Returns the hexdump representation of a string
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sub hexdump($)
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{
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return "" if(not defined($_[0]));
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my $content="";
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$content.=sprintf("%02X ",unpack("C",substr($_[0],$_,1))) foreach (0 .. length($_[0])-1);
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return $content;
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}
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#pack3 packs together the length of the data in 3 bytes and the data itself, size limited to 16MB. In case the data is more than 16 MB, it is ignored, and a 0 Byte block is transferred
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sub pack3
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{
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return "\x00\x00\x00" if(!defined($_[0]));
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my $data=(length($_[0]) >= 2**24)? "":$_[0];
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my $len=pack("N",length($data));
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#print "len: ".length($data)."\n";
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return substr($len,1,3).$data;
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}
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#unpack3 unpacks packed data.
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sub unpack3($)
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{
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return undef if((not defined($_[0])) or length($_[0])<3);
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#print "hexdump: ".hexdump("\x00".substr($_[0],0,3))."\n";
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my $len=unpack("N","\x00".substr($_[0],0,3));
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#print "len3: $len length(): ".length($_[0])." length()-3: ".(length($_[0])-3)."\n";
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return undef if(length($_[0])-3 != $len);
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return substr($_[0],3);
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}
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#unpack3array extracts a whole array of concatented packed data.
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sub unpack3array($)
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{
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my @retarr=();
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if((not defined($_[0])) or length($_[0])<3)
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{
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SysLog "Datenanfang kaputt\n";
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return ();
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}
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my $dataleft=$_[0];
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while(length($dataleft)>=3)
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{
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#print "hexdump: ".hexdump("\x00".substr($dataleft,0,3))."\n";
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my $len=unpack("N","\x00".substr($dataleft,0,3));
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#print "len3: $len length(): ".length($dataleft)." length()-3: ".(length($dataleft)-3)."\n";
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if(length($dataleft)-3 < $len)
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{
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SysLog "Datensatz abgeschnitten\n";
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return ();
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}
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push @retarr, substr($dataleft,3,$len);
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$dataleft=substr($dataleft,3+$len);
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}
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if(length($dataleft)!=0)
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{
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SysLog "Ende abgeschnitten\n";
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return ();
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}
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return @retarr;
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}
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my $timestamp=strftime("%Y-%m-%d %H:%M:%S",localtime);
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SysLog("Starting Server at $timestamp\n");
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SysLog("Opening Serial interface:\n");
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#if(1)
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#{
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sub SerialSettings
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{
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my $PortObj=$_[0];
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Error "Could not open Serial Port!\n" if(!defined($PortObj));
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$PortObj->baudrate(115200);
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$PortObj->parity("none");
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$PortObj->databits(8);
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$PortObj->stopbits(1);
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}
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#We have to open the SerialPort and close it again, so that we can bind it to a Handle
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my $PortObj = new Device::SerialPort($serialport);
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SerialSettings($PortObj);
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$PortObj->save("serialserver.conf");
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#}
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undef $PortObj;
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$PortObj = tie (*SER, 'Device::SerialPort', "serialserver.conf") || Error "Can't tie using Configuration_File_Name: $!\n";
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Error "Could not open Serial Interface!\n" if(not defined($PortObj));
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SerialSettings($PortObj);
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#open SER,">$serialport";
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SysLog("Serial interface opened: $PortObj\n");
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#Creating select() selector for improved reading:
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my $sel = new IO::Select( \*SER );
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#Raw send function over the Serial Interface (+debugging)
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sub SendIt($)
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{
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return unless defined($_[0]);
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SysLog "Sending ".length($_[0])."\n"; #hexdump($_[0])."\n";
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my $data=$_[0];
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my $runcount=0;
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my $total=0;
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my $mtu=30;
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while(length($data))
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{
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my $iwrote=scalar($PortObj->write(substr($data,0,$mtu)))||0;
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usleep(270*$iwrote+9000); # On Linux, we have to wait to make sure it is being sent, and we dont loose any data.
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$total+=$iwrote;
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$data=substr($data,$iwrote);
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print "i wrote: $iwrote total: $total left: ".length($data)."\n" if(!($runcount++ %10));
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}
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# print "Sending ".length($_[0])."\n"; #hexdump($_[0])."\n";
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# foreach(0 .. length($_[0]))
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# {
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# $PortObj->write(substr($_[0],$_,1));
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# }
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}
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#Send data over the Serial Interface with handshaking:
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#Warning: This function is implemented paranoid. It exits the program in case something goes wrong.
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sub SendHandshakedParanoid($)
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{
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#print "Shaking hands ...\n";
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SendIt("\x02");
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Error "Handshake uncompleted. Connection lost!" if(!scalar($sel->can_read(2)));
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my $data="";
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usleep(1000000);
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my $length=read SER,$data,1;
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if($length && $data eq "\x10")
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{
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print "OK ...\n";
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my $xor=0;
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foreach(0 .. length($_[0])-1)
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{
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#print "xor mit ".unpack("C",substr($_[0],$_,1))."\n";
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$xor ^= unpack("C",substr($_[0],$_,1));
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}
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#print "XOR: $xor\n";
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my $tryagain=1;
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while($tryagain)
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{
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SendIt($_[0].pack("C",$xor)."rie4Ech7");
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Error "Packet receipt was not confirmed in 5 seconds. Connection lost!" if(!scalar($sel->can_read(5)));
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$data="";
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$length=read SER,$data,1;
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if($length && $data eq "\x10")
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{
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SysLog "Sent successfully!...\n";
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$tryagain=0;
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}
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elsif($length && $data eq "\x11")
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{
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$tryagain=1;
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}
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else
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{
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Error "I cannot send! $length ".unpack("C",$data)."\n";
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}
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}
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}
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else
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{
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print "!Cannot send! $length $data\n";
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Error "!Stopped sending.\n";
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}
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}
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sub Receive
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{
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my $data="";
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my @ready = $sel->can_read(20);
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my $length=read SER,$data,1,0;
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#SysLog "Data: ".hexdump($data)."\n";
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if($data eq "\x02")
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{
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my $modus=1;
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SysLog "Start received, sending OK\n";
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SendIt("\x10");
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my $block="";
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my $blockfinished=0;
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my $tries=10000;
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while(!$blockfinished)
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{
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Error("Tried reading too often\n") if(($tries--)<=0);
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$data="";
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if(!scalar($sel->can_read(2)))
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{
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SysLog("Timeout!\n");
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return;
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}
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$length=read SER,$data,100,0;
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if($length)
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{
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$block.=$data;
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}
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#SysLog("Received: $length ".length($block)."\n");
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$blockfinished=defined(unpack3(substr($block,0,-9)))?1:0;
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if(!$blockfinished and substr($block,-8,8) eq "rie4Ech7")
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{
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SysLog "BROKEN Block detected!";
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SendIt("\x11");
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$block="";
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$blockfinished=0;
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$tries=10000;
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}
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}
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SysLog "Block done: \n";#.hexdump($block)."\n";
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SendIt("\x10");
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SysLog "Returning block\n";
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return($block);
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}
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else
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{
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Error("Error: No Answer received, Timeout.\n") if(length($data)==0);
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Error("Error: Wrong Startbyte: ".hexdump($data)." !\n");
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}
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SysLog "Waiting on next request ...\n";
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}
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#Checks the CRC of a received block for validity
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#Returns 1 upon successful check and 0 for a failure
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sub CheckCRC($)
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{
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my $block=$_[0];
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return 0 if(length($_[0])<1);
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return 1 if($_[0] eq "\x00");
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my $xor=0;
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foreach(0 .. length($block)-2)
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{
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#print "xor mit ".unpack("C",substr($block,$_,1))."\n";
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$xor ^= unpack("C",substr($block,$_,1));
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}
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#print "XOR: $xor BCC: ".unpack("C",substr($block,-1,1))."\n";
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if($xor eq unpack("C",substr($block,-1,1)))
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{
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#print "Checksum correct\n";
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return 1;
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}
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else
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{
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#print "Checksum on received packet wrong!\n";
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return 0;
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}
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}
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#Formatting and sending a Response packet
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sub Response($$$$$$$)
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{
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SendHandshakedParanoid(pack3(pack3(pack("C*",$_[0],$_[1],$_[2],$_[3])).pack3($_[4]).pack3($_[5]).pack3($_[6])));
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}
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#Checks the parameters, whether the certificate system (OpenPGP, X.509, ...) is available,
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#whether the specified root key is available, whether the config file is available, ...
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#Returns 1 upon success, and dies upon error!
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sub CheckSystem($$$$)
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{
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my ($system,$root,$template,$hash)=@_;
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if(not defined($templates{$template}))
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{
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Error "Template unknown!\n";
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}
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if(not defined($hashes{$hash}))
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{
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Error "Hash algorithm unknown!\n";
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}
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if(defined($rootkeys{$system}))
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{
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if($root<$rootkeys{$system})
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{
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return 1;
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}
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else
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{
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Error "Identity System $system has only $rootkeys{$system} root keys, key $root does not exist.\n";
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}
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}
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else
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{
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Error "Identity System $system not supported";
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}
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return 0;
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}
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#Selects the specified config file for OpenSSL and makes sure that the specified config file exists
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#Returns the full path to the config file
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sub X509ConfigFile($$)
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{
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my ($root,$template)=@_;
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my $opensslcnf="";
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if($root==0)
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{
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$opensslcnf="/etc/ssl/openssl-$templates{$template}";
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}
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elsif($root==1)
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{
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$opensslcnf="/etc/ssl/class3-$templates{$template}";
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}
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elsif($root==2)
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{
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$opensslcnf="/etc/ssl/class3s-$templates{$template}";
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}
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else
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{
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$opensslcnf="/etc/ssl/root$root/$templates{$template}";
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}
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# Check that the config file exists
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Error "Config file does not exist: $opensslcnf!" unless (-f $opensslcnf);
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return $opensslcnf;
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}
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sub CreateWorkspace()
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{
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mkdir "$work",0700;
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my $id = (new File::CounterFile "./$work/.counter", "0")->inc;
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mkdir "$work/".int($id/1000),0700;
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mkdir "$work/".int($id/1000)."/".($id%1000),0700;
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my $wid="$work/".int($id/1000)."/".($id%1000);
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SysLog "Creating Working directory: $wid\n";
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return $wid;
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}
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sub SignX509($$$$$$$$)
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{
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my ($root,$template,$hash,$days,$spkac,$request,$san,$subject)=@_;
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my $wid=CreateWorkspace();
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my $opensslcnf=X509ConfigFile($root,$template);
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print "Subject: $subject\n";
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print "SAN: $san\n";
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$subject=~ s/\\x([A-F0-9]{2})/pack("C", hex($1))/egi;
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$san=~ s/\\x([A-F0-9]{2})/pack("C", hex($1))/egi;
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Error "Invalid characters in SubjectAltName!\n" if($san=~m/[ \n\r\t\x00#"'\\]/);
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Error "Invalid characters in Subject: ".hexdump($subject)." - $subject\n" if($subject=~m/[\n\r\t\x00#"'\\]/);
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print "Subject: $subject\n";
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print "SAN: $san\n";
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my $extfile="";
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if($templates{$template}=~m/server/) #??? Should we really do that for all and only for server certs?
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{
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open OUT,">$wid/extfile";
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print OUT "basicConstraints = critical, CA:FALSE\n";
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print OUT "keyUsage = critical, digitalSignature, keyEncipherment, keyAgreement\n";
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print OUT "extendedKeyUsage = clientAuth, serverAuth, nsSGC, msSGC\n";
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print OUT "authorityInfoAccess = OCSP;URI:$OCSPUrl\n";
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my $CRLUrl="";
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if($root==0)
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{
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$CRLUrl="http://crl.cacert.org/revoke.crl";
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}
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elsif($root==1)
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{
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$CRLUrl="http://crl.cacert.org/class3-revoke.crl";
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}
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elsif($root==2)
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{
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$CRLUrl="http://crl.cacert.org/class3s-revoke.crl";
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}
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else
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{
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$CRLUrl="http://crl.cacert.org/root${root}.crl";
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}
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print OUT "crlDistributionPoints = URI:${CRLUrl}\n";
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print OUT "subjectAltName = $san\n" if(length($san));
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close OUT;
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$extfile=" -extfile $wid/extfile ";
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}
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my $cmd=($request=~m/SPKAC\s*=/)?"-spkac":"-subj '$subject' -in";
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#my $cmd=$spkac?"-spkac":"-subj '$subject' -in";
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if(open OUT,">$wid/request.csr")
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{
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print OUT $request;
|
|
close OUT;
|
|
|
|
my $do = `$opensslbin ca $hashes{$hash} -config $opensslcnf $cmd $wid/request.csr -out $wid/output.crt -days $days -key test -batch $extfile 2>&1`;
|
|
|
|
SysLog $do;
|
|
|
|
|
|
if(open IN,"<$wid/output.crt")
|
|
{
|
|
undef $/;
|
|
my $content=<IN>;
|
|
close IN;
|
|
$/="\n";
|
|
|
|
$content=~s/^.*-----BEGIN/-----BEGIN/s;
|
|
SysLog "Antworte...\n";
|
|
Response($ver,1,0,0,$content,"","");
|
|
SysLog "Done.\n";
|
|
if(!$debug)
|
|
{
|
|
unlink "$wid/output.crt";
|
|
unlink "$wid/request.csr";
|
|
unlink "$wid/extfile";
|
|
}
|
|
}
|
|
else
|
|
{
|
|
Error("Could not read the resulting certificate.\n");
|
|
}
|
|
}
|
|
else
|
|
{
|
|
Error("Could not save request.\n");
|
|
}
|
|
unlink "$wid";
|
|
}
|
|
|
|
sub SignOpenPGP
|
|
{
|
|
my ($root,$template,$hash,$days,$spkac,$request,$san,$subject)=@_;
|
|
|
|
my $wid=CreateWorkspace();
|
|
|
|
if(! -f "secring$root.gpg")
|
|
{
|
|
Error "Root Key not found: secring$root.gpg !\n";
|
|
}
|
|
|
|
copy("secring$root.gpg","$wid/secring.gpg");
|
|
copy("pubring$root.gpg","$wid/pubring.gpg");
|
|
|
|
my $keyid=undef;
|
|
|
|
Error "Invalid characters in SubjectAltName!\n" if($san=~m/[ \n\r\t\x00#"'\\]/);
|
|
Error "Invalid characters in Subject!\n" if($subject=~m/[ \n\r\t\x00#"'\\;]/);
|
|
|
|
|
|
if(open OUT,">$wid/request.key")
|
|
{
|
|
print OUT $request;
|
|
close OUT;
|
|
|
|
|
|
#!!!! ?!?
|
|
#my $homedir=-w "/root/.gnupg" ? "/root/.gnupg":"$wid/";
|
|
my $homedir="$wid/";
|
|
|
|
{
|
|
SysLog "Running GnuPG in $homedir...\n";
|
|
my ($stdin,$stdout,$stderr) = (IO::Handle->new(),IO::Handle->new(),IO::Handle->new());
|
|
|
|
|
|
SysLog "Importiere $gpgbin --no-tty --homedir $homedir --import $wid/request.key\n";
|
|
|
|
my $pid = open3($stdin,$stdout,$stderr, "$gpgbin --no-tty --homedir $homedir --command-fd 0 --status-fd 1 --logger-fd 2 --with-colons --import $wid/request.key");
|
|
|
|
if (!$pid) {
|
|
Error "Cannot fork GnuPG.";
|
|
}
|
|
$/="\n";
|
|
while(<$stdout>)
|
|
{
|
|
SysLog "Received from GnuPG: $_\n";
|
|
if(m/^\[GNUPG:\] GOT_IT/)
|
|
{
|
|
}
|
|
elsif(m/^\[GNUPG:\] GET_BOOL keyedit\.setpref\.okay/)
|
|
{
|
|
print $stdin "no\n";
|
|
}
|
|
elsif(m/^\[GNUPG:\] ALREADY_SIGNED/)
|
|
{
|
|
}
|
|
elsif(m/^\[GNUPG:\] GOOD_PASSPHRASE/)
|
|
{
|
|
}
|
|
elsif(m/^\[GNUPG:\] KEYEXPIRED/)
|
|
{
|
|
}
|
|
elsif(m/^\[GNUPG:\] SIGEXPIRED/)
|
|
{
|
|
}
|
|
elsif(m/^\[GNUPG:\] IMPORT_OK/)
|
|
{
|
|
}
|
|
elsif(m/^\[GNUPG:\] IMPORT_RES/)
|
|
{
|
|
}
|
|
elsif(m/^\[GNUPG:\] IMPORTED ([0-9A-F]{16})/)
|
|
{
|
|
Error "More than one OpenPGP sent at once!" if(defined($keyid));
|
|
$keyid=$1;
|
|
}
|
|
elsif(m/^\[GNUPG:\] NODATA/)
|
|
{
|
|
# To crash or not to crash, thats the question.
|
|
}
|
|
else
|
|
{
|
|
Error "ERROR: UNKNOWN $_\n";
|
|
}
|
|
|
|
}
|
|
|
|
while(<$stderr>)
|
|
{
|
|
|
|
SysLog "Received from GnuPG on stderr: $_\n";
|
|
|
|
if(m/^key ([0-9A-F]{8}): public key/)
|
|
{
|
|
#$keyid=$1;
|
|
}
|
|
}
|
|
|
|
waitpid($pid,0);
|
|
|
|
}
|
|
|
|
Error "No KeyID found!" if(!defined($keyid));
|
|
|
|
|
|
SysLog "Running GnuPG to Sign...\n";
|
|
|
|
{
|
|
my ($stdin,$stdout,$stderr) = (IO::Handle->new(),IO::Handle->new(),IO::Handle->new());
|
|
|
|
|
|
|
|
$ENV{'LANG'}="";
|
|
|
|
my $line="$gpgbin --no-tty --default-key $gpgID --homedir $homedir --default-cert-expire $days"."d --ask-cert-expire --cert-policy-url $CPSUrl --command-fd 0 --status-fd 1 --logger-fd 2 --sign-key $keyid ";
|
|
SysLog($line."\n");
|
|
|
|
my $pid = open3($stdin,$stdout,$stderr,$line);
|
|
|
|
if (!$pid) {
|
|
Error "Cannot fork GnuPG.";
|
|
}
|
|
SysLog "Got PID $pid\n";
|
|
while(<$stdout>)
|
|
{
|
|
SysLog "Received from GnuPG: $_\n";
|
|
if(m/^\[GNUPG:\] GET_BOOL keyedit\.sign_all\.okay/)
|
|
{
|
|
print $stdin "yes\n";
|
|
}
|
|
elsif(m/^\[GNUPG:\] GOT_IT/)
|
|
{
|
|
}
|
|
elsif(m/^\[GNUPG:\] GET_BOOL sign_uid\.okay/)
|
|
{
|
|
print $stdin "yes\n";
|
|
}
|
|
elsif(m/^\[GNUPG:\] GET_BOOL sign_uid\.expire_okay/)
|
|
{
|
|
print $stdin "yes\n";
|
|
}
|
|
elsif(m/^\[GNUPG:\] GET_LINE siggen\.valid\s?$/)
|
|
{
|
|
print $stdin "$days\n";
|
|
}
|
|
elsif(m/^\[GNUPG:\] GET_LINE sign_uid\.expire\s?$/)
|
|
{
|
|
print "DETECTED: Do you want your signature to expire at the same time? (Y/n) -> yes\n";
|
|
print $stdin "no\n";
|
|
}
|
|
elsif(m/^\[GNUPG:\] GET_BOOL sign_uid\.replace_expired_okay/)
|
|
{
|
|
print $stdin "yes\n";
|
|
}
|
|
elsif(m/^\[GNUPG:\] GET_BOOL sign_uid\.dupe_okay/)
|
|
{
|
|
print $stdin "yes\n";
|
|
}
|
|
elsif(m/^\[GNUPG:\] GET_BOOL keyedit\.sign_revoked\.okay/)
|
|
{
|
|
print $stdin "no\n";
|
|
}
|
|
elsif(m/^\[GNUPG:\] GET_BOOL sign_uid\.revoke_okay/)
|
|
{
|
|
print $stdin "no\n";
|
|
}
|
|
elsif(m/^\[GNUPG:\] GET_BOOL sign_uid\.expired_okay/)
|
|
{
|
|
print "The key has already expired!!!\n";
|
|
print $stdin "no\n";
|
|
}
|
|
elsif(m/^\[GNUPG:\] GET_BOOL sign_uid\.nosig_okay/)
|
|
{
|
|
print $stdin "no\n";
|
|
}
|
|
elsif(m/^\[GNUPG:\] GET_BOOL sign_uid\.v4_on_v3_okay/)
|
|
{
|
|
print $stdin "no\n";
|
|
}
|
|
elsif(m/^\[GNUPG:\] GET_BOOL keyedit\.setpref\.okay/)
|
|
{
|
|
print $stdin "no\n";
|
|
}
|
|
elsif(m/^\[GNUPG:\] ALREADY_SIGNED/)
|
|
{
|
|
}
|
|
elsif(m/^\[GNUPG:\] GOOD_PASSPHRASE/)
|
|
{
|
|
}
|
|
elsif(m/^\[GNUPG:\] KEYEXPIRED/)
|
|
{
|
|
}
|
|
elsif(m/^\[GNUPG:\] SIGEXPIRED/)
|
|
{
|
|
}
|
|
elsif(m/^\[GNUPG:\] NODATA/)
|
|
{
|
|
# To crash or not to crash, thats the question.
|
|
}
|
|
else
|
|
{
|
|
Error "ERROR: UNKNOWN $_\n";
|
|
}
|
|
}
|
|
|
|
while(<$stderr>)
|
|
{
|
|
|
|
SysLog "Received from GnuPG on stderr: $_\n";
|
|
|
|
if(m/^key ([0-9A-F]{8}): public key/)
|
|
{
|
|
#$keyid=$1;
|
|
}
|
|
}
|
|
|
|
|
|
|
|
waitpid($pid,0);
|
|
|
|
}
|
|
|
|
#$do = `( $extras echo "365"; echo "y"; echo "2"; echo "y")|$gpgbin --no-tty --default-key gpg@cacert.org --homedir $homedir --batch --command-fd 0 --status-fd 1 --cert-policy-url http://www.cacert.org/index.php?id=10 --ask-cert-expire --sign-key $row[email] 2>&1`;
|
|
|
|
SysLog "Running GPG to export...\n";
|
|
|
|
my $do = `$gpgbin --no-tty --homedir $homedir --export --armor $keyid > $wid/result.key`;
|
|
SysLog $do;
|
|
$do = `$gpgbin --no-tty --homedir $homedir --batch --yes --delete-key $keyid 2>&1`;
|
|
SysLog $do;
|
|
|
|
if(open IN,"<$wid/result.key")
|
|
{
|
|
undef $/;
|
|
my $content=<IN>;
|
|
close IN;
|
|
$/="\n";
|
|
|
|
$content=~s/^.*-----BEGIN/-----BEGIN/s;
|
|
SysLog "Antworte...\n";
|
|
Response($ver,2,0,0,$content,"","");
|
|
SysLog "Done.\n";
|
|
|
|
if(!$debug)
|
|
{
|
|
unlink "$wid/request.key";
|
|
unlink "$wid/result.key";
|
|
}
|
|
|
|
}
|
|
else
|
|
{
|
|
SysLog "NO Resulting Key found!";
|
|
}
|
|
}
|
|
else
|
|
{
|
|
Error "Kann Request nicht speichern!\n";
|
|
}
|
|
|
|
unlink("$wid/secring.gpg");
|
|
unlink("$wid/pubring.gpg");
|
|
unlink("$wid");
|
|
}
|
|
|
|
sub RevokeX509
|
|
{
|
|
my ($root,$template,$hash,$days,$spkac,$request,$san,$subject)=@_;
|
|
|
|
Error "Invalid characters in SubjectAltName!\n" if($san=~m/[ \n\r\t\x00#"'\\]/);
|
|
Error "Invalid characters in Hash!\n" if(! $subject=~m/^[0-9a-fA-F]+$/);
|
|
|
|
SysLog "Widerrufe $PkiSystems{$_[0]}\n";
|
|
SysLog "Aktueller Hash vom Webserver: $subject\n";
|
|
|
|
my $iscurrent=0;
|
|
|
|
$currenthash{$root}=sha1_hex(readfile("revoke-root$root.crl"));
|
|
|
|
print "Aktueller Hash vom Signingserver: $currenthash{$root}\n";
|
|
|
|
if($subject eq $currenthash{$root})
|
|
{
|
|
print "Hash matches current CRL.\n";
|
|
print "Deleting old CRLs...\n";
|
|
foreach (<currentcrls/$root/*>)
|
|
{
|
|
if($_ ne "currentcrls/$root/$subject.crl")
|
|
{
|
|
print "Deleting $_\n";
|
|
unlink $_ ;
|
|
}
|
|
}
|
|
print "Done with deleting old CRLs.\n";
|
|
$iscurrent=1;
|
|
}
|
|
|
|
my $wid=CreateWorkspace();
|
|
|
|
my $opensslcnf=X509ConfigFile($root,$template);
|
|
|
|
if(open OUT,">$wid/request.crt")
|
|
{
|
|
print OUT $request;
|
|
close OUT;
|
|
|
|
my $do = `$opensslbin ca $hashes{$hash} -config $opensslcnf -key test -batch -revoke $wid/request.crt > /dev/null 2>&1`;
|
|
$do = `$opensslbin ca $hashes{$hash} -config $opensslcnf -key test -batch -gencrl -crldays 7 -crlexts crl_ext -out $wid/cacert-revoke.crl > /dev/null 2>&1`;
|
|
$do = `$opensslbin crl -inform PEM -in $wid/cacert-revoke.crl -outform DER -out $wid/revoke.crl > /dev/null 2>&1`;
|
|
unlink "$wid/cacert-revoke.crl";
|
|
|
|
if(open IN,"<$wid/revoke.crl")
|
|
{
|
|
undef $/;
|
|
my $content=<IN>;
|
|
close IN;
|
|
$/="\n";
|
|
unlink "$wid/revoke.crl";
|
|
|
|
mkdir "currentcrls/$root";
|
|
my $newcrlname="currentcrls/$root/".sha1_hex($content).".crl";
|
|
open OUT,">$newcrlname";
|
|
print OUT $content;
|
|
close OUT;
|
|
|
|
if($iscurrent)
|
|
{
|
|
SysLog "Schicke aktuelles Delta...\n";
|
|
system "xdelta delta revoke-root$root.crl $newcrlname delta$root.diff";
|
|
Response($ver,2,0,0,readfile("delta$root.diff"),"","");
|
|
#Response($ver,2,0,0,$content,"","");
|
|
}
|
|
else
|
|
{
|
|
if(-f "currentcrls/$root/$subject.crl")
|
|
{
|
|
SysLog "Schicke altes Delta...\n";
|
|
system "xdelta delta currentcrls/$root/$subject.crl $newcrlname delta$root.diff";
|
|
|
|
Response($ver,2,0,0,readfile("delta$root.diff"),"","");
|
|
#Response($ver,2,0,0,$content,"","");
|
|
}
|
|
else
|
|
{
|
|
SysLog "Out of Sync! Sending empty CRL...\n";
|
|
Response($ver,2,0,0,"","",""); # CRL !!!!!!!!!
|
|
}
|
|
}
|
|
|
|
open OUT,">revoke-root$root.crl";
|
|
print OUT $content;
|
|
close OUT;
|
|
|
|
|
|
SysLog "Done.\n";
|
|
}
|
|
}
|
|
unlink "$wid";
|
|
}
|
|
|
|
|
|
sub analyze($)
|
|
{
|
|
SysLog "Analysiere ...\n";
|
|
#SysLog hexdump($_[0])."\n";
|
|
|
|
my @fields=unpack3array(substr($_[0],3,-9));
|
|
Error "Wrong number of parameters: ".scalar(@fields)."\n" if(scalar(@fields)!=4);
|
|
|
|
SysLog "Header: ".hexdump($fields[0])."\n";
|
|
my @bytes=unpack("C*",$fields[0]);
|
|
|
|
Error "Header too short!\n" if(length($fields[0])<3);
|
|
|
|
Error "Version mismatch. Server does not support version $bytes[0], server only supports version $ver!\n" if($bytes[0]!=$ver);
|
|
|
|
Error "Header has wrong length: ".length($fields[0])."!\n" if(length($fields[0])!=9);
|
|
|
|
if($bytes[1] == 0) # NUL Request
|
|
{
|
|
SysLog "NUL Request detected.\n";
|
|
if($fields[1] =~ /^\d+\.\d+$/)
|
|
{
|
|
open OUT,">timesync.sh";
|
|
print OUT "date -u '$fields[1]'\n";
|
|
print OUT "hwclock --systohc\n";
|
|
close OUT;
|
|
}
|
|
Response($ver,0,0,0,"","","");
|
|
}
|
|
elsif($bytes[1]==1) # Sign Request
|
|
{
|
|
SysLog "SignRequest detected...\n";
|
|
CheckSystem($bytes[2],$bytes[3],$bytes[4],$bytes[5]);
|
|
if($bytes[2]==1)
|
|
{
|
|
SignX509($bytes[3],$bytes[4],$bytes[5],($bytes[6]<<8)+$bytes[7], $bytes[8],$fields[1],$fields[2],$fields[3]);
|
|
}
|
|
elsif($bytes[2]==2)
|
|
{
|
|
SignOpenPGP($bytes[3],$bytes[4],$bytes[5],($bytes[6]<<8)+$bytes[7], $bytes[8],$fields[1],$fields[2],$fields[3]);
|
|
}
|
|
}
|
|
elsif($bytes[1]==2) # Revocation Request
|
|
{
|
|
SysLog "Revocation Request ...\n";
|
|
CheckSystem($bytes[2],$bytes[3],$bytes[4],$bytes[5]);
|
|
if($bytes[2]==1)
|
|
{
|
|
RevokeX509($bytes[3],$bytes[4],$bytes[5],($bytes[6]<<8)+$bytes[7], $bytes[8],$fields[1],$fields[2],$fields[3]);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
Error "Unknown command\n";
|
|
}
|
|
|
|
}
|
|
|
|
SysLog "Server started. Waiting 5 minutes for contact from client ...\n";
|
|
|
|
#When started, we wait for 5 minutes for the client to connect:
|
|
my @ready=$sel->can_read($starttime);
|
|
|
|
|
|
my $count=0;
|
|
|
|
#As soon as the client connected successfully, the client has to send a request faster than every 10 seconds
|
|
while(@ready = $sel->can_read(15) && -f "./server.pl-active")
|
|
{
|
|
my $data="";
|
|
#my $length=read SER,$data,1;
|
|
|
|
#SysLog "Data: ".hexdump($data)."\n";
|
|
|
|
#Receive();
|
|
|
|
$data=Receive();
|
|
SysLog "Analysing ...\n";
|
|
analyze($data);
|
|
|
|
# if($data eq "\x02")
|
|
# {
|
|
# #SysLog "Start empfangen, sende OK\n";
|
|
# SendIt("\x10");
|
|
#
|
|
# my $block="";
|
|
# my $blockfinished=0;
|
|
# my $tries=10000;
|
|
#
|
|
# while(!$blockfinished)
|
|
# {
|
|
# Error "Tried reading too often\n" if(($tries--)<=0);
|
|
#
|
|
# $data="";
|
|
# @ready = $sel->can_read(2);
|
|
# $length=read SER,$data,100;
|
|
# if($length)
|
|
# {
|
|
# $block.=$data;
|
|
# }
|
|
# $blockfinished=defined(unpack3(substr($block,0,-1)))?1:0;
|
|
# }
|
|
# #SysLog "Block done: ".hexdump($block)."\n";
|
|
# if(CheckCRC($block))
|
|
# {
|
|
# SendIt("\x10");
|
|
# analyze($block);
|
|
# }
|
|
# else
|
|
# {
|
|
# Error "CRC Error\n";
|
|
# }
|
|
# }
|
|
# else
|
|
# {
|
|
# Error "Error: Wrong Startbyte!\n";
|
|
# }
|
|
|
|
$count++;
|
|
|
|
SysLog "$count requests processed. Waiting on next request ...\n";
|
|
|
|
}
|
|
|
|
|
|
Error "Timeout! No data from client anymore!\n";
|
|
|