#!/usr/bin/perl -w # *************************************************************************** # * _ _ ____ _ # * Project ___| | | | _ \| | # * / __| | | | |_) | | # * | (__| |_| | _ <| |___ # * \___|\___/|_| \_\_____| # * # * Copyright (C) 1998 - 2014, Daniel Stenberg, <daniel@haxx.se>, et al. # * # * This software is licensed as described in the file COPYING, which # * you should have received as part of this distribution. The terms # * are also available at http://curl.haxx.se/docs/copyright.html. # * # * You may opt to use, copy, modify, merge, publish, distribute and/or sell # * copies of the Software, and permit persons to whom the Software is # * furnished to do so, under the terms of the COPYING file. # * # * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY # * KIND, either express or implied. # * # *************************************************************************** # This Perl script creates a fresh ca-bundle.crt file for use with libcurl. # It downloads certdata.txt from Mozilla's source tree (see URL below), # then parses certdata.txt and extracts CA Root Certificates into PEM format. # These are then processed with the OpenSSL commandline tool to produce the # final ca-bundle.crt file. # The script is based on the parse-certs script written by Roland Krikava. # This Perl script works on almost any platform since its only external # dependency is the OpenSSL commandline tool for optional text listing. # Hacked by Guenter Knauf. # use Getopt::Std; use MIME::Base64; use LWP::UserAgent; use strict; use vars qw($opt_b $opt_d $opt_f $opt_h $opt_i $opt_l $opt_n $opt_p $opt_q $opt_s $opt_t $opt_u $opt_v $opt_w); use List::Util; use Text::Wrap; my $MOD_SHA = "Digest::SHA"; eval "require $MOD_SHA"; if ($@) { $MOD_SHA = "Digest::SHA::PurePerl"; eval "require $MOD_SHA"; } my %urls = ( 'nss' => 'http://hg.mozilla.org/projects/nss/raw-file/tip/lib/ckfw/builtins/certdata.txt', 'central' => 'http://hg.mozilla.org/mozilla-central/raw-file/default/security/nss/lib/ckfw/builtins/certdata.txt', 'aurora' => 'http://hg.mozilla.org/releases/mozilla-aurora/raw-file/default/security/nss/lib/ckfw/builtins/certdata.txt', 'beta' => 'http://hg.mozilla.org/releases/mozilla-beta/raw-file/default/security/nss/lib/ckfw/builtins/certdata.txt', 'release' => 'http://hg.mozilla.org/releases/mozilla-release/raw-file/default/security/nss/lib/ckfw/builtins/certdata.txt', ); $opt_d = 'release'; # If the OpenSSL commandline is not in search path you can configure it here! my $openssl = 'openssl'; my $version = '1.25'; $opt_w = 76; # default base64 encoded lines length # default cert types to include in the output (default is to include CAs which may issue SSL server certs) my $default_mozilla_trust_purposes = "SERVER_AUTH"; my $default_mozilla_trust_levels = "TRUSTED_DELEGATOR"; $opt_p = $default_mozilla_trust_purposes . ":" . $default_mozilla_trust_levels; my @valid_mozilla_trust_purposes = ( "DIGITAL_SIGNATURE", "NON_REPUDIATION", "KEY_ENCIPHERMENT", "DATA_ENCIPHERMENT", "KEY_AGREEMENT", "KEY_CERT_SIGN", "CRL_SIGN", "SERVER_AUTH", "CLIENT_AUTH", "CODE_SIGNING", "EMAIL_PROTECTION", "IPSEC_END_SYSTEM", "IPSEC_TUNNEL", "IPSEC_USER", "TIME_STAMPING", "STEP_UP_APPROVED" ); my @valid_mozilla_trust_levels = ( "TRUSTED_DELEGATOR", # CAs "NOT_TRUSTED", # Don't trust these certs. "MUST_VERIFY_TRUST", # This explicitly tells us that it ISN'T a CA but is otherwise ok. In other words, this should tell the app to ignore any other sources that claim this is a CA. "TRUSTED" # This cert is trusted, but only for itself and not for delegates (i.e. it is not a CA). ); my $default_signature_algorithms = $opt_s = "MD5"; my @valid_signature_algorithms = ( "MD5", "SHA1", "SHA256", "SHA384", "SHA512" ); $0 =~ s@.*(/|\\)@@; $Getopt::Std::STANDARD_HELP_VERSION = 1; getopts('bd:fhilnp:qs:tuvw:'); if(!defined($opt_d)) { # to make plain "-d" use not cause warnings, and actually still work $opt_d = 'release'; } # Use predefined URL or else custom URL specified on command line. my $url = ( defined( $urls{$opt_d} ) ) ? $urls{$opt_d} : $opt_d; my $curl = `curl -V`; if ($opt_i) { print ("=" x 78 . "\n"); print "Script Version : $version\n"; print "Perl Version : $]\n"; print "Operating System Name : $^O\n"; print "Getopt::Std.pm Version : ${Getopt::Std::VERSION}\n"; print "MIME::Base64.pm Version : ${MIME::Base64::VERSION}\n"; print "LWP::UserAgent.pm Version : ${LWP::UserAgent::VERSION}\n"; print "LWP.pm Version : ${LWP::VERSION}\n"; print "Digest::SHA.pm Version : ${Digest::SHA::VERSION}\n" if ($Digest::SHA::VERSION); print "Digest::SHA::PurePerl.pm Version : ${Digest::SHA::PurePerl::VERSION}\n" if ($Digest::SHA::PurePerl::VERSION); print ("=" x 78 . "\n"); } sub warning_message() { if ( $opt_d =~ m/^risk$/i ) { # Long Form Warning and Exit print "Warning: Use of this script may pose some risk:\n"; print "\n"; print " 1) Using http is subject to man in the middle attack of certdata content\n"; print " 2) Default to 'release', but more recent updates may be found in other trees\n"; print " 3) certdata.txt file format may change, lag time to update this script\n"; print " 4) Generally unwise to blindly trust CAs without manual review & verification\n"; print " 5) Mozilla apps use additional security checks aren't represented in certdata\n"; print " 6) Use of this script will make a security engineer grind his teeth and\n"; print " swear at you. ;)\n"; exit; } else { # Short Form Warning print "Warning: Use of this script may pose some risk, -d risk for more details.\n"; } } sub HELP_MESSAGE() { print "Usage:\t${0} [-b] [-d<certdata>] [-f] [-i] [-l] [-n] [-p<purposes:levels>] [-q] [-s<algorithms>] [-t] [-u] [-v] [-w<l>] [<outputfile>]\n"; print "\t-b\tbackup an existing version of ca-bundle.crt\n"; print "\t-d\tspecify Mozilla tree to pull certdata.txt or custom URL\n"; print "\t\t Valid names are:\n"; print "\t\t ", join( ", ", map { ( $_ =~ m/$opt_d/ ) ? "$_ (default)" : "$_" } sort keys %urls ), "\n"; print "\t-f\tforce rebuild even if certdata.txt is current\n"; print "\t-i\tprint version info about used modules\n"; print "\t-l\tprint license info about certdata.txt\n"; print "\t-n\tno download of certdata.txt (to use existing)\n"; print wrap("\t","\t\t", "-p\tlist of Mozilla trust purposes and levels for certificates to include in output. Takes the form of a comma separated list of purposes, a colon, and a comma separated list of levels. (default: $default_mozilla_trust_purposes:$default_mozilla_trust_levels)"), "\n"; print "\t\t Valid purposes are:\n"; print wrap("\t\t ","\t\t ", join( ", ", "ALL", @valid_mozilla_trust_purposes ) ), "\n"; print "\t\t Valid levels are:\n"; print wrap("\t\t ","\t\t ", join( ", ", "ALL", @valid_mozilla_trust_levels ) ), "\n"; print "\t-q\tbe really quiet (no progress output at all)\n"; print wrap("\t","\t\t", "-s\tcomma separated list of certificate signatures/hashes to output in plain text mode. (default: $default_signature_algorithms)\n"); print "\t\t Valid signature algorithms are:\n"; print wrap("\t\t ","\t\t ", join( ", ", "ALL", @valid_signature_algorithms ) ), "\n"; print "\t-t\tinclude plain text listing of certificates\n"; print "\t-u\tunlink (remove) certdata.txt after processing\n"; print "\t-v\tbe verbose and print out processed CAs\n"; print "\t-w <l>\twrap base64 output lines after <l> chars (default: ${opt_w})\n"; exit; } sub VERSION_MESSAGE() { print "${0} version ${version} running Perl ${]} on ${^O}\n"; } warning_message() unless ($opt_q || $url =~ m/^(ht|f)tps:/i ); HELP_MESSAGE() if ($opt_h); sub is_in_list($@) { my $target = shift; return defined(List::Util::first { $target eq $_ } @_); } # Parses $param_string as a case insensitive comma separated list with optional whitespace # validates that only allowed parameters are supplied sub parse_csv_param($$@) { my $description = shift; my $param_string = shift; my @valid_values = @_; my @values = map { s/^\s+//; # strip leading spaces s/\s+$//; # strip trailing spaces uc $_ # return the modified string as upper case } split( ',', $param_string ); # Find all values which are not in the list of valid values or "ALL" my @invalid = grep { !is_in_list($_,"ALL",@valid_values) } @values; if ( scalar(@invalid) > 0 ) { # Tell the user which parameters were invalid and print the standard help message which will exit print "Error: Invalid ", $description, scalar(@invalid) == 1 ? ": " : "s: ", join( ", ", map { "\"$_\"" } @invalid ), "\n"; HELP_MESSAGE(); } @values = @valid_values if ( is_in_list("ALL",@values) ); return @values; } sub sha1 { my $result; if ($Digest::SHA::VERSION || $Digest::SHA::PurePerl::VERSION) { open(FILE, $_[0]) or die "Can't open '$_[0]': $!"; binmode(FILE); $result = $MOD_SHA->new(1)->addfile(*FILE)->hexdigest; close(FILE); } else { # Use OpenSSL command if Perl Digest::SHA modules not available $result = (split(/ |\r|\n/,`$openssl dgst -sha1 $_[0]`))[1]; } return $result; } sub oldsha1 { my $sha1 = ""; open(C, "<$_[0]") || return 0; while(<C>) { chomp; if($_ =~ /^\#\# SHA1: (.*)/) { $sha1 = $1; last; } } close(C); return $sha1; } if ( $opt_p !~ m/:/ ) { print "Error: Mozilla trust identifier list must include both purposes and levels\n"; HELP_MESSAGE(); } (my $included_mozilla_trust_purposes_string, my $included_mozilla_trust_levels_string) = split( ':', $opt_p ); my @included_mozilla_trust_purposes = parse_csv_param( "trust purpose", $included_mozilla_trust_purposes_string, @valid_mozilla_trust_purposes ); my @included_mozilla_trust_levels = parse_csv_param( "trust level", $included_mozilla_trust_levels_string, @valid_mozilla_trust_levels ); my @included_signature_algorithms = parse_csv_param( "signature algorithm", $opt_s, @valid_signature_algorithms ); sub should_output_cert(%) { my %trust_purposes_by_level = @_; foreach my $level (@included_mozilla_trust_levels) { # for each level we want to output, see if any of our desired purposes are included return 1 if ( defined( List::Util::first { is_in_list( $_, @included_mozilla_trust_purposes ) } @{$trust_purposes_by_level{$level}} ) ); } return 0; } my $crt = $ARGV[0] || 'ca-bundle.crt'; (my $txt = $url) =~ s@(.*/|\?.*)@@g; my $stdout = $crt eq '-'; my $resp; my $fetched; my $oldsha1 = oldsha1($crt); print STDERR "SHA1 of old file: $oldsha1\n" if (!$opt_q); print STDERR "Downloading '$txt' ...\n" if (!$opt_q); if($curl && !$opt_n) { my $https = $url; $https =~ s/^http:/https:/; print STDERR "Get certdata over HTTPS with curl!\n" if (!$opt_q); my $quiet = $opt_q ? "-s" : ""; my @out = `curl -w %{response_code} $quiet -O $https`; if(@out && $out[0] == 200) { $fetched = 1; } else { print STDERR "Failed downloading HTTPS with curl, trying HTTP with LWP\n" if (!$opt_q); } } unless ($fetched || ($opt_n and -e $txt)) { my $ua = new LWP::UserAgent(agent => "$0/$version"); $ua->env_proxy(); $resp = $ua->mirror($url, $txt); if ($resp && $resp->code eq '304') { print STDERR "Not modified\n" unless $opt_q; exit 0 if -e $crt && !$opt_f; } else { $fetched = 1; } if( !$resp || $resp->code !~ /^(?:200|304)$/ ) { print STDERR "Unable to download latest data: " . ($resp? $resp->code . ' - ' . $resp->message : "LWP failed") . "\n" unless $opt_q; exit 1 if -e $crt || ! -r $txt; } } my $filedate = $resp ? $resp->last_modified : (stat($txt))[9]; my $datesrc = "as of"; if(!$filedate) { # mxr.mozilla.org gave us a time, hg.mozilla.org does not! $filedate = time(); $datesrc="downloaded on"; } # get the hash from the download file my $newsha1= sha1($txt); if($oldsha1 eq $newsha1) { print STDERR "Downloaded file identical to previous run\'s source file. Exiting\n"; exit; } print STDERR "SHA1 of new file: $newsha1\n"; my $currentdate = scalar gmtime($filedate); my $format = $opt_t ? "plain text and " : ""; if( $stdout ) { open(CRT, '> -') or die "Couldn't open STDOUT: $!\n"; } else { open(CRT,">$crt.~") or die "Couldn't open $crt.~: $!\n"; } print CRT <<EOT; ## ## Bundle of CA Root Certificates ## ## Certificate data from Mozilla ${datesrc}: ${currentdate} ## ## This is a bundle of X.509 certificates of public Certificate Authorities ## (CA). These were automatically extracted from Mozilla's root certificates ## file (certdata.txt). This file can be found in the mozilla source tree: ## ${url} ## ## It contains the certificates in ${format}PEM format and therefore ## can be directly used with curl / libcurl / php_curl, or with ## an Apache+mod_ssl webserver for SSL client authentication. ## Just configure this file as the SSLCACertificateFile. ## ## Conversion done with mk-ca-bundle.pl version $version. ## SHA1: $newsha1 ## EOT print STDERR "Processing '$txt' ...\n" if (!$opt_q); my $caname; my $certnum = 0; my $skipnum = 0; my $start_of_cert = 0; open(TXT,"$txt") or die "Couldn't open $txt: $!\n"; while (<TXT>) { if (/\*\*\*\*\* BEGIN LICENSE BLOCK \*\*\*\*\*/) { print CRT; print if ($opt_l); while (<TXT>) { print CRT; print if ($opt_l); last if (/\*\*\*\*\* END LICENSE BLOCK \*\*\*\*\*/); } } next if /^#|^\s*$/; chomp; if (/^CVS_ID\s+\"(.*)\"/) { print CRT "# $1\n"; } # this is a match for the start of a certificate if (/^CKA_CLASS CK_OBJECT_CLASS CKO_CERTIFICATE/) { $start_of_cert = 1 } if ($start_of_cert && /^CKA_LABEL UTF8 \"(.*)\"/) { $caname = $1; } my %trust_purposes_by_level; if ($start_of_cert && /^CKA_VALUE MULTILINE_OCTAL/) { my $data; while (<TXT>) { last if (/^END/); chomp; my @octets = split(/\\/); shift @octets; for (@octets) { $data .= chr(oct); } } # scan forwards until the trust part while (<TXT>) { last if (/^CKA_CLASS CK_OBJECT_CLASS CKO_NSS_TRUST/); chomp; } # now scan the trust part to determine how we should trust this cert while (<TXT>) { last if (/^#/); if (/^CKA_TRUST_([A-Z_]+)\s+CK_TRUST\s+CKT_NSS_([A-Z_]+)\s*$/) { if ( !is_in_list($1,@valid_mozilla_trust_purposes) ) { print STDERR "Warning: Unrecognized trust purpose for cert: $caname. Trust purpose: $1. Trust Level: $2\n" if (!$opt_q); } elsif ( !is_in_list($2,@valid_mozilla_trust_levels) ) { print STDERR "Warning: Unrecognized trust level for cert: $caname. Trust purpose: $1. Trust Level: $2\n" if (!$opt_q); } else { push @{$trust_purposes_by_level{$2}}, $1; } } } if ( !should_output_cert(%trust_purposes_by_level) ) { $skipnum ++; } else { my $encoded = MIME::Base64::encode_base64($data, ''); $encoded =~ s/(.{1,${opt_w}})/$1\n/g; my $pem = "-----BEGIN CERTIFICATE-----\n" . $encoded . "-----END CERTIFICATE-----\n"; print CRT "\n$caname\n"; my $maxStringLength = length($caname); if ($opt_t) { foreach my $key (keys %trust_purposes_by_level) { my $string = $key . ": " . join(", ", @{$trust_purposes_by_level{$key}}); $maxStringLength = List::Util::max( length($string), $maxStringLength ); print CRT $string . "\n"; } } print CRT ("=" x $maxStringLength . "\n"); if (!$opt_t) { print CRT $pem; } else { my $pipe = ""; foreach my $hash (@included_signature_algorithms) { $pipe = "|$openssl x509 -" . $hash . " -fingerprint -noout -inform PEM"; if (!$stdout) { $pipe .= " >> $crt.~"; close(CRT) or die "Couldn't close $crt.~: $!"; } open(TMP, $pipe) or die "Couldn't open openssl pipe: $!"; print TMP $pem; close(TMP) or die "Couldn't close openssl pipe: $!"; if (!$stdout) { open(CRT, ">>$crt.~") or die "Couldn't open $crt.~: $!"; } } $pipe = "|$openssl x509 -text -inform PEM"; if (!$stdout) { $pipe .= " >> $crt.~"; close(CRT) or die "Couldn't close $crt.~: $!"; } open(TMP, $pipe) or die "Couldn't open openssl pipe: $!"; print TMP $pem; close(TMP) or die "Couldn't close openssl pipe: $!"; if (!$stdout) { open(CRT, ">>$crt.~") or die "Couldn't open $crt.~: $!"; } } print STDERR "Parsing: $caname\n" if ($opt_v); $certnum ++; $start_of_cert = 0; } } } close(TXT) or die "Couldn't close $txt: $!\n"; close(CRT) or die "Couldn't close $crt.~: $!\n"; unless( $stdout ) { if ($opt_b && -e $crt) { my $bk = 1; while (-e "$crt.~${bk}~") { $bk++; } rename $crt, "$crt.~${bk}~" or die "Failed to create backup $crt.~$bk}~: $!\n"; } elsif( -e $crt ) { unlink( $crt ) or die "Failed to remove $crt: $!\n"; } rename "$crt.~", $crt or die "Failed to rename $crt.~ to $crt: $!\n"; } unlink $txt if ($opt_u); print STDERR "Done ($certnum CA certs processed, $skipnum skipped).\n" if (!$opt_q);