diff options
Diffstat (limited to 'lib/mk-ca-bundle.pl')
| -rwxr-xr-x | lib/mk-ca-bundle.pl | 451 |
1 files changed, 382 insertions, 69 deletions
diff --git a/lib/mk-ca-bundle.pl b/lib/mk-ca-bundle.pl index 3586dc46..c2080e95 100755 --- a/lib/mk-ca-bundle.pl +++ b/lib/mk-ca-bundle.pl @@ -6,7 +6,7 @@ # * | (__| |_| | _ <| |___ # * \___|\___/|_| \_\_____| # * -# * Copyright (C) 1998 - 2010, Daniel Stenberg, <daniel@haxx.se>, et al. +# * 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 @@ -34,100 +34,347 @@ use Getopt::Std; use MIME::Base64; use LWP::UserAgent; use strict; -use vars qw($opt_b $opt_h $opt_i $opt_l $opt_n $opt_q $opt_t $opt_u $opt_v); +use vars qw($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'; -my $url = 'http://mxr.mozilla.org/seamonkey/source/security/nss/lib/ckfw/builtins/certdata.txt?raw=1'; # If the OpenSSL commandline is not in search path you can configure it here! my $openssl = 'openssl'; -my $version = '1.14'; +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; -getopts('bhilnqtuv'); +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 "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"); } -$0 =~ s/\\/\//g; -$0 = substr($0, rindex($0, '/') + 1); -if ($opt_h) { - printf("Usage:\t%s [-b] [-i] [-l] [-n] [-q] [-t] [-u] [-v] [<outputfile>]\n", $0); +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 report($@) { + my $output = shift; + + print STDERR $output . "\n" unless $opt_q; +} + +sub is_in_list($@) { + 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 $txt = substr($url, rindex($url, '/') + 1); -$txt =~ s/\?.*//; +(my $txt = $url) =~ s@(.*/|\?.*)@@g; -if (!$opt_n || !-e $txt) { - print "Downloading '$txt' ...\n" if (!$opt_q); - my $ua = new LWP::UserAgent(agent => "$0/$version"); - my $req = new HTTP::Request('GET', $url); - my $res = $ua->request($req); - if ($res->is_success) { - open(TXT,">$txt") or die "Couldn't open $txt: $!"; - print TXT $res->content . "\n"; - close(TXT) or die "Couldn't close $txt: $!"; +my $stdout = $crt eq '-'; +my $resp; +my $fetched; + +my $oldsha1 = oldsha1($crt); + +report "SHA1 of old file: $oldsha1"; + +report "Downloading '$txt' ..."; + +if($curl && !$opt_n) { + my $https = $url; + $https =~ s/^http:/https:/; + report "Get certdata over HTTPS with curl!"; + my $quiet = $opt_q ? "-s" : ""; + my @out = `curl -w %{response_code} $quiet -O $https`; + if(@out && $out[0] == 200) { + $fetched = 1; } else { - die $res->status_line; + report "Failed downloading HTTPS with curl, trying HTTP with LWP"; } } -if ($opt_b && -e $crt) { - my $bk = 1; - while (-e "$crt.~${bk}~") { - $bk++; +unless ($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') { + report "Not modified"; + exit 0 if -e $crt && !$opt_f; + } else { + $fetched = 1; + } + if( !$resp || $resp->code !~ /^(?:200|304)$/ ) { + report "Unable to download latest data: " + . ($resp? $resp->code . ' - ' . $resp->message : "LWP failed"); + exit 1 if -e $crt || ! -r $txt; } - rename $crt, "$crt.~${bk}~"; } +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(!$opt_f && $oldsha1 eq $newsha1) { + report "Downloaded file identical to previous run\'s source file. Exiting"; + exit; +} + +report "SHA1 of new file: $newsha1"; + +my $currentdate = scalar gmtime($filedate); + my $format = $opt_t ? "plain text and " : ""; -my $currentdate = scalar gmtime() . " UTC"; -open(CRT,">$crt") or die "Couldn't open $crt: $!"; +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; ## -## $crt -- Bundle of CA Root Certificates +## Bundle of CA Root Certificates ## -## Converted at: ${currentdate} +## 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: -## '/mozilla/security/nss/lib/ckfw/builtins/certdata.txt' +## ${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 -close(CRT) or die "Couldn't close $crt: $!"; - -print "Processing '$txt' ...\n" if (!$opt_q); +report "Processing '$txt' ..."; my $caname; my $certnum = 0; -open(TXT,"$txt") or die "Couldn't open $txt: $!"; +my $skipnum = 0; +my $start_of_cert = 0; + +open(TXT,"$txt") or die "Couldn't open $txt: $!\n"; while (<TXT>) { if (/\*\*\*\*\* BEGIN LICENSE BLOCK \*\*\*\*\*/) { - open(CRT, ">>$crt") or die "Couldn't open $crt: $!"; print CRT; print if ($opt_l); while (<TXT>) { @@ -135,19 +382,22 @@ while (<TXT>) { print if ($opt_l); last if (/\*\*\*\*\* END LICENSE BLOCK \*\*\*\*\*/); } - close(CRT) or die "Couldn't close $crt: $!"; } next if /^#|^\s*$/; chomp; if (/^CVS_ID\s+\"(.*)\"/) { - open(CRT, ">>$crt") or die "Couldn't open $crt: $!"; print CRT "# $1\n"; - close(CRT) or die "Couldn't close $crt: $!"; } - if (/^CKA_LABEL\s+[A-Z0-9]+\s+\"(.*)\"/) { + + # 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 = $1; } - if (/^CKA_VALUE MULTILINE_OCTAL/) { + my %trust_purposes_by_level; + if ($start_of_cert && /^CKA_VALUE MULTILINE_OCTAL/) { my $data; while (<TXT>) { last if (/^END/); @@ -158,29 +408,92 @@ while (<TXT>) { $data .= chr(oct); } } - my $pem = "-----BEGIN CERTIFICATE-----\n" - . MIME::Base64::encode($data) - . "-----END CERTIFICATE-----\n"; - open(CRT, ">>$crt") or die "Couldn't open $crt: $!"; - print CRT "\n$caname\n"; - print CRT ("=" x length($caname) . "\n"); - if (!$opt_t) { - print CRT $pem; + # scan forwards until the trust part + while (<TXT>) { + last if (/^CKA_CLASS CK_OBJECT_CLASS CKO_NSS_TRUST/); + chomp; } - close(CRT) or die "Couldn't close $crt: $!"; - if ($opt_t) { - open(TMP, "|$openssl x509 -md5 -fingerprint -text -inform PEM >> $crt") or die "Couldn't open openssl pipe: $!"; - print TMP $pem; - close(TMP) or die "Couldn't close openssl pipe: $!"; + # now scan the trust part to determine how we should trust this cert + while (<TXT>) { + last if (/^#/); + if (/^CKA_TRUST_([A-Z_]+)\s+CK_TRUST\s+CKT_NSS_([A-Z_]+)\s*$/) { + if ( !is_in_list($1,@valid_mozilla_trust_purposes) ) { + report "Warning: Unrecognized trust purpose for cert: $caname. Trust purpose: $1. Trust Level: $2"; + } elsif ( !is_in_list($2,@valid_mozilla_trust_levels) ) { + report "Warning: Unrecognized trust level for cert: $caname. Trust purpose: $1. Trust Level: $2"; + } else { + push @{$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.~: $!"; + } + } + report "Parsing: $caname" if ($opt_v); + $certnum ++; + $start_of_cert = 0; } - print "Parsing: $caname\n" if ($opt_v); - $certnum ++; } } -close(TXT) or die "Couldn't close $txt: $!"; +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 "Done ($certnum CA certs processed).\n" if (!$opt_q); - -exit; - - +report "Done ($certnum CA certs processed, $skipnum skipped)."; |