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davidg |
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#! /usr/bin/perl -w |
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# |
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# @(#)$Id$ |
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# |
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# Copyright 2010 David Groep, Nationaal instituut voor |
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# subatomaire fysica NIKHEF |
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# |
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# Licensed under the Apache License, Version 2.0 (the "License"); |
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# you may not use this file except in compliance with the License. |
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# You may obtain a copy of the License at |
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# |
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# http://www.apache.org/licenses/LICENSE-2.0 |
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# |
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# Unless required by applicable law or agreed to in writing, software |
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# distributed under the License is distributed on an "AS IS" BASIS, |
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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# See the License for the specific language governing permissions and |
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# limitations under the License. |
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# |
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# |
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package main; |
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use strict; |
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use Getopt::Long qw(:config no_ignore_case bundling); |
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use POSIX; |
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eval { require LWP or die; }; $@ and die "Please install libwww-perl (LWP)\n"; |
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# import modules that are needed but still external |
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# (the installed version may have these packages embedded in-line) |
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# |
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require ConfigTiny and import ConfigTiny unless defined &ConfigTiny::new; |
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require TrustAnchor and import TrustAnchor unless defined &TrustAnchor::new; |
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require CRLWriter and import CRLWriter unless defined &CRLWriter::new; |
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require FCLog and import FCLog unless defined &FCLog::new; |
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require OSSL and import OSSL unless defined &OSSL::new; |
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require CRL and import CRL unless defined &CRL::new; |
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my $use_DataDumper = eval { require Data::Dumper; }; |
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my $use_IOSelect = eval { require IO::Select; }; |
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use vars qw/ $log $cnf /; |
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# ########################################################################### |
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# |
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# |
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($cnf,$log) = &init_configuration(); |
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# verify local installation sanity for loaded modules |
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$::log->getverbose > 6 and ! $use_DataDumper and |
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$::log->err("Cannot set verbosity higher than 6 without Data::Dumper") and |
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exit(1); |
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$::cnf->{_}->{parallelism} and ! $use_IOSelect and |
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$::log->err("Cannot use parallel retrieval without IO::Select") and |
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exit(1); |
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$use_DataDumper and $::log->verb(7,Data::Dumper::Dumper($cnf)); |
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# set safe path if so requested |
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$cnf->{_}->{path} and $ENV{"PATH"} = $cnf->{_}->{path} and |
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$::log->verb(5,"Set PATH to",$ENV{"PATH"}); |
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# wait up to randomwait seconds to spread download load |
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$cnf->{_}->{randomwait} and do { |
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my $wtime = int(rand($cnf->{_}->{randomwait})); |
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$::log->verb(2,"Sleeping $wtime seconds before continuing"); |
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sleep($wtime); |
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}; |
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# the list of trust anchors to process comes from the command line and |
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# all files in the infodir that are metadata or crl urls |
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# in the next phase, the suffix will be stripped and the info file |
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# when present preferred over the crlurl |
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# |
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my @metafiles = @ARGV; |
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$::cnf->{_}->{"infodir"} and do { |
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foreach my $fn ( |
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map { glob ( $::cnf->{_}->{"infodir"} . "/$_" ); } "*.info", "*.crl_url" |
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) { |
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$fn =~ /.*\/([^\/]+)(\.crl_url|\.info)$/; |
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push @metafiles, $1 unless grep /$1/,@metafiles or not defined $1; |
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} |
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}; |
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@metafiles or |
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$log->err("No trust anchors to process") and exit($log->exitstatus); |
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if ( $::cnf->{_}->{parallelism} ) { |
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¶llel_metafiles($::cnf->{_}->{parallelism}, @metafiles); |
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} else { |
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&process_metafiles( @metafiles ); |
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} |
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$log->flush; |
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exit($log->exitstatus); |
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# ########################################################################### |
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# |
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# |
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sub init_configuration() { |
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my ($cnf,$log); |
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my ($configfile,$agingtolerance,$infodir,$statedir,$cadir,$httptimeout); |
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my ($output); |
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my @formats; |
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my $verbosity; |
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my $quiet=0; |
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my $help=0; |
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my $debuglevel; |
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my $parallelism=0; |
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my $randomwait; |
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$log = FCLog->new("qualified"); |
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&GetOptions( |
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"c|config=s" => \$configfile, |
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"l|infodir=s" => \$infodir, |
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"cadir=s" => \$cadir, |
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"s|statedir=s" => \$statedir, |
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"T|httptimeout=i" => \$httptimeout, |
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"o|output=s" => \$output, |
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"format=s@" => \@formats, |
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"v|verbose+" => \$verbosity, |
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"h|help+" => \$help, |
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"q|quiet+" => \$quiet, |
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"d|debug+" => \$debuglevel, |
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"p|parallelism=i" => \$parallelism, |
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"a|agingtolerance=i" => \$agingtolerance, |
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"r|randomwait=i" => \$randomwait, |
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) or &help and exit(1); |
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$help and &help and exit(0); |
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$configfile ||= ( -e "/etc/fetch-crl.cnf" and "/etc/fetch-crl.cnf" ); |
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($quiet > 0) and $verbosity = -$quiet; |
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$cnf = ConfigTiny->new(); |
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$configfile and |
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$cnf->read($configfile) || die "Invalid config file $configfile:\n " . |
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$cnf->errstr . "\n"; |
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# command-line option overrides |
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$cnf->{_}->{agingtolerance} = $agingtolerance if defined $agingtolerance; |
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$cnf->{_}->{infodir} = $infodir if defined $infodir; |
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$cnf->{_}->{cadir} = $cadir if defined $cadir; |
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$cnf->{_}->{statedir} = $statedir if defined $statedir; |
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$cnf->{_}->{httptimeout} = $httptimeout if defined $httptimeout; |
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$cnf->{_}->{verbosity} = $verbosity if defined $verbosity; |
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$cnf->{_}->{debuglevel} = $debuglevel if defined $debuglevel; |
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$cnf->{_}->{output} = $output if defined $output; |
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$cnf->{_}->{formats} = join "",@formats if @formats; |
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$cnf->{_}->{parallelism} = $parallelism if $parallelism; |
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$cnf->{_}->{randomwait} = $randomwait if defined $randomwait; |
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# key default values |
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defined $cnf->{_}->{version} or $cnf->{_}->{version} = "3+"; |
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defined $cnf->{_}->{packager} or $cnf->{_}->{packager} = "EUGridPMA"; |
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defined $cnf->{_}->{openssl} or $cnf->{_}->{openssl} = "openssl"; |
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defined $cnf->{_}->{agingtolerance} or $cnf->{_}->{agingtolerance} ||= 24; |
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defined $cnf->{_}->{infodir} or $cnf->{_}->{infodir} = '/etc/grid-security/certificates'; |
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defined $cnf->{_}->{output} or $cnf->{_}->{output} = $cnf->{_}->{infodir}; |
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defined $cnf->{_}->{cadir} or $cnf->{_}->{cadir} = $cnf->{_}->{infodir}; |
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defined $cnf->{_}->{statedir} or $cnf->{_}->{statedir} = "/var/cache/fetch-crl" if -d "/var/cache/fetch-crl" and -w "/var/cache/fetch-crl"; |
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defined $cnf->{_}->{formats} or $cnf->{_}->{formats} = "openssl"; |
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defined $cnf->{_}->{opensslmode} or $cnf->{_}->{opensslmode} = "dual"; |
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defined $cnf->{_}->{httptimeout} or $cnf->{_}->{httptimeout} = 120; |
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defined $cnf->{_}->{nametemplate_der} or |
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$cnf->{_}->{nametemplate_der} = "\@ANCHORNAME\@.\@R\@.crl"; |
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defined $cnf->{_}->{nametemplate_pem} or |
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$cnf->{_}->{nametemplate_pem} = "\@ANCHORNAME\@.\@R\@.crl.pem"; |
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defined $cnf->{_}->{catemplate} or |
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$cnf->{_}->{catemplate} = "\@ALIAS\@.pem". |
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"\@ALIAS\@.\@R\@\@ANCHORNAME\@.\@R\@"; |
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$cnf->{_}->{nonssverify} ||= 0; |
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$cnf->{_}->{nocache} ||= 0; |
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$cnf->{_}->{verbosity} ||= 0; |
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$cnf->{_}->{debuglevel} ||= 0; |
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$cnf->{_}->{stateless} and delete $cnf->{_}->{statedir}; |
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# expand array keys in config |
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defined $cnf->{_}->{formats} and |
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@{$cnf->{_}->{formats_}} = split(/[;,\s]+/,$cnf->{_}->{formats}); |
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# sanity check on configuration |
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$cnf->{_}->{statedir} and ! -d $cnf->{_}->{statedir} and |
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die "Invalid state directory " . $cnf->{_}->{statedir} . "\n"; |
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$cnf->{_}->{infodir} and ! -d $cnf->{_}->{infodir} and |
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die "Invalid meta-data directory ".$cnf->{_}->{infodir}."\n"; |
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# initialize logging |
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$log->flush; |
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$cnf->{_}->{logmode} and $log->destremove("qualified") and do { |
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foreach ( split(/[,]+/,$cnf->{_}->{logmode}) ) { |
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if ( /^syslog$/ ) { $log->destadd($_,$cnf->{_}->{syslogfacility}); } |
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elsif ( /^(direct|qualified|cache)$/ ) { $log->destadd($_); } |
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else { die "Invalid log destination $_, exiting.\n"; } |
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} |
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}; |
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$log->setverbose($cnf->{_}->{verbosity}); |
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$log->setdebug($cnf->{_}->{debuglevel}); |
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return ($cnf,$log); |
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} |
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# ########################################################################### |
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# |
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# |
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sub help() { |
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(my $name = $0) =~ s/.*\///; |
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print <<EOHELP; |
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The fetch-crl utility will retrieve certificate revocation lists (CRLs) for |
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a set of installed trust anchors, based on crl_url files or IGTF-style info |
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files. It will install these for use with OpenSSL, NSS or third-party tools. |
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Usage: $name [-c|--config configfile] [-l|--infodir path] |
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[--cadir path] [-s|--statedir path] [-o|--output path] [--format \@formats] |
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[-T|--httptimeout seconds] [-p|--parallelism n] |
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[-a|--agingtolerance hours] [-r|--randomwait seconds] |
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[-v|--verbose] [-h|--help] [-q|--quiet] [-d|--debug level] |
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Options: |
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-c | --config path |
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Read configuration data from path, default: /etc/fetch-crl.cnf |
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-l | --infodir path |
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Location of the trust anchor meta-data files (crl_url or info), |
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default: /etc/grid-security/certificates |
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--cadir path |
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Location of the trust anchors (default to infodir) |
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-s | --statedir path |
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Location of the historic state data (for caching and delayed-warning) |
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-T | --httptimeout sec |
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Maximum time in seconds to wait for retrieval or a single URL |
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-o | --output path |
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Location of the CRLs written (global default, defaults to infodir |
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--format \@formats |
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Format(s) in which the CRLs will be written (openssl, pem, der, nss) |
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-v | --verbose |
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Become more talkative |
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-q | --quiet |
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Become really quiet (overrides verbosity) |
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-p | --parallelism n |
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Run up to n parallel trust anchor retrieval processes |
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-a | --agingtolerance hours |
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Be quiet for up to hours hours before raising an error. Until |
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the tolerance has passed, only warnings are raised |
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-r | --randomwait seconds |
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Introduce a random delay of up to seconds seconds before starting |
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any retrieval processes |
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-h | --help |
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This help text |
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EOHELP |
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return 1; |
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} |
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# ########################################################################### |
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# |
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# |
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sub process_metafiles(@) { |
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my @metafiles = @_; |
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foreach my $f ( @metafiles ) { |
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my $ta = TrustAnchor->new(); |
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$cnf->{_}->{"infodir"} and $ta->setInfodir($cnf->{_}->{"infodir"}); |
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$ta->loadAnchor($f) or next; |
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$ta->saveLogMode() and $ta->setLogMode(); |
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$ta->loadCAfiles() or next; |
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$ta->loadState() or next; |
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$ta->retrieve or next; |
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$ta->verifyAndConvertCRLs or next; |
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my $writer = CRLWriter->new($ta); |
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$writer->writeall() or next; |
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$ta->saveState() or next; |
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$ta->restoreLogMode(); |
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} |
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return 1; |
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} |
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sub parallel_metafiles($@) { |
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my $parallelism = shift; |
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my @metafiles = @_; |
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my %pids = (); # file handle by processID |
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my %metafile_by_fh = (); # reverse map |
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my $readset = new IO::Select(); |
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my %logoutput = (); |
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$| = 1; |
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$::log->verb(2,"starting up to $parallelism worker processes"); |
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while ( @metafiles or scalar keys %pids ) { |
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# loop until we have started all possible retrievals AND have |
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# collected all possible output |
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( @metafiles and (scalar keys %pids < $parallelism) ) and do { |
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# we have metafiles left, and have spare process slots |
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my $metafile = shift @metafiles; |
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$logoutput{$metafile} = ""; |
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my $cout; |
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my $cpid = open $cout, "-|"; |
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defined $cpid and defined $cout or |
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$::log->err("Cannot fork ($metafile): $!") and next; |
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$::log->verb(5,"LOOP: starting process $cpid for $metafile"); |
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if ( $cpid == 0 ) { # I'm the child that should care for $metafile |
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$0 = "fetch-crl worker $metafile"; |
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$::log->cleanse(); |
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$::log->destadd("qualified"); |
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&process_metafiles($metafile); |
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$::log->flush; |
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exit($::log->exitstatus); |
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} else { # parent |
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$pids{$cpid} = $cout; |
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$readset->add($cout); |
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$metafile_by_fh{$cout} = $metafile; |
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} |
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}; |
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# do a select loop over the outstanding requests to collect messages |
| 332 |
|
|
# if we are in the process of starting more processes, we just |
| 333 |
|
|
# briefly poll out pending output so as not to have blocking |
| 334 |
|
|
# children, but if we have started as many children as we ought to |
| 335 |
|
|
# we put in a longer timeout -- any output on a handle will |
| 336 |
|
|
# get us out of the select and into flushing mode again |
| 337 |
|
|
my $timeout = (@metafiles && (scalar keys %pids < $parallelism) ? 0.1:1); |
| 338 |
|
|
|
| 339 |
|
|
$::log->verb(6,"PLOOP: select with timeout $timeout"); |
| 340 |
|
|
my ( $rh_set ) = IO::Select->select($readset, undef, undef, $timeout); |
| 341 |
|
|
|
| 342 |
|
|
foreach my $fh ( @$rh_set ) { |
| 343 |
|
|
my $metafile = $metafile_by_fh{$fh}; |
| 344 |
|
|
# we know there is at least one byte to read, but also that |
| 345 |
|
|
# any client sends complete |
| 346 |
|
|
while (1) { |
| 347 |
|
|
my $char; |
| 348 |
|
|
my $length = sysread $fh, $char, 1; |
| 349 |
|
|
if ( $length ) { |
| 350 |
|
|
$logoutput{$metafile} .= $char; |
| 351 |
|
|
$char eq "\n" and last; |
| 352 |
|
|
} else { |
| 353 |
|
|
#expected a char but got eof |
| 354 |
|
|
$readset->remove($fh); |
| 355 |
|
|
close($fh); |
| 356 |
|
|
map { |
| 357 |
|
|
$pids{$_} == $fh and |
| 358 |
|
|
waitpid($_,WNOHANG) and |
| 359 |
|
|
delete $pids{$_} and |
| 360 |
|
|
$::log->verb(5,"Collected pid $_ (rc=$?),", |
| 361 |
|
|
length($logoutput{$metafile}),"bytes log output"); |
| 362 |
|
|
} keys %pids; |
| 363 |
|
|
last; |
| 364 |
|
|
} |
| 365 |
|
|
} |
| 366 |
|
|
} |
| 367 |
|
|
} |
| 368 |
|
|
|
| 369 |
|
|
# log out all collected log data from our children |
| 370 |
|
|
foreach my $metafile ( sort keys %logoutput ) { |
| 371 |
|
|
foreach my $line ( split(/\n/,$logoutput{$metafile}) ) { |
| 372 |
|
|
$line =~ /^ERROR\s+(.*)$/ and $::log->err($1); |
| 373 |
|
|
$line =~ /^WARN\s+(.*)$/ and $::log->warn($1); |
| 374 |
|
|
$line =~ /^VERBOSE\((\d+)\)\s+(.*)$/ and $::log->verb($1,$2); |
| 375 |
|
|
$line =~ /^DEBUG\((\d+)\)\s+(.*)$/ and $::log->debug($1,$2); |
| 376 |
|
|
} |
| 377 |
|
|
} |
| 378 |
|
|
|
| 379 |
|
|
return 1; |
| 380 |
|
|
} |
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