2 # ***************************************************************************
4 # * Project ___| | | | _ \| |
5 # * / __| | | | |_) | |
6 # * | (__| |_| | _ <| |___
7 # * \___|\___/|_| \_\_____|
9 # * Copyright (C) 1998 - 2014, Daniel Stenberg, <daniel@haxx.se>, et al.
11 # * This software is licensed as described in the file COPYING, which
12 # * you should have received as part of this distribution. The terms
13 # * are also available at http://curl.haxx.se/docs/copyright.html.
15 # * You may opt to use, copy, modify, merge, publish, distribute and/or sell
16 # * copies of the Software, and permit persons to whom the Software is
17 # * furnished to do so, under the terms of the COPYING file.
19 # * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
20 # * KIND, either express or implied.
22 # ***************************************************************************
23 # This Perl script creates a fresh ca-bundle.crt file for use with libcurl.
24 # It downloads certdata.txt from Mozilla's source tree (see URL below),
25 # then parses certdata.txt and extracts CA Root Certificates into PEM format.
26 # These are then processed with the OpenSSL commandline tool to produce the
27 # final ca-bundle.crt file.
28 # The script is based on the parse-certs script written by Roland Krikava.
29 # This Perl script works on almost any platform since its only external
30 # dependency is the OpenSSL commandline tool for optional text listing.
31 # Hacked by Guenter Knauf.
37 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);
40 my $MOD_SHA = "Digest::SHA";
41 eval "require $MOD_SHA";
43 $MOD_SHA = "Digest::SHA::PurePerl";
44 eval "require $MOD_SHA";
49 'http://hg.mozilla.org/projects/nss/raw-file/tip/lib/ckfw/builtins/certdata.txt',
51 'http://hg.mozilla.org/mozilla-central/raw-file/default/security/nss/lib/ckfw/builtins/certdata.txt',
53 'http://hg.mozilla.org/releases/mozilla-aurora/raw-file/default/security/nss/lib/ckfw/builtins/certdata.txt',
55 'http://hg.mozilla.org/releases/mozilla-beta/raw-file/default/security/nss/lib/ckfw/builtins/certdata.txt',
57 'http://hg.mozilla.org/releases/mozilla-release/raw-file/default/security/nss/lib/ckfw/builtins/certdata.txt',
62 # If the OpenSSL commandline is not in search path you can configure it here!
63 my $openssl = 'openssl';
67 $opt_w = 76; # default base64 encoded lines length
69 # default cert types to include in the output (default is to include CAs which may issue SSL server certs)
70 my $default_mozilla_trust_purposes = "SERVER_AUTH";
71 my $default_mozilla_trust_levels = "TRUSTED_DELEGATOR";
72 $opt_p = $default_mozilla_trust_purposes . ":" . $default_mozilla_trust_levels;
74 my @valid_mozilla_trust_purposes = (
93 my @valid_mozilla_trust_levels = (
94 "TRUSTED_DELEGATOR", # CAs
95 "NOT_TRUSTED", # Don't trust these certs.
96 "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.
97 "TRUSTED" # This cert is trusted, but only for itself and not for delegates (i.e. it is not a CA).
100 my $default_signature_algorithms = $opt_s = "MD5";
102 my @valid_signature_algorithms = (
111 $Getopt::Std::STANDARD_HELP_VERSION = 1;
112 getopts('bd:fhilnp:qs:tuvw:');
114 if(!defined($opt_d)) {
115 # to make plain "-d" use not cause warnings, and actually still work
119 # Use predefined URL or else custom URL specified on command line.
120 my $url = ( defined( $urls{$opt_d} ) ) ? $urls{$opt_d} : $opt_d;
122 my $curl = `curl -V`;
125 print ("=" x 78 . "\n");
126 print "Script Version : $version\n";
127 print "Perl Version : $]\n";
128 print "Operating System Name : $^O\n";
129 print "Getopt::Std.pm Version : ${Getopt::Std::VERSION}\n";
130 print "MIME::Base64.pm Version : ${MIME::Base64::VERSION}\n";
131 print "LWP::UserAgent.pm Version : ${LWP::UserAgent::VERSION}\n";
132 print "LWP.pm Version : ${LWP::VERSION}\n";
133 print "Digest::SHA.pm Version : ${Digest::SHA::VERSION}\n" if ($Digest::SHA::VERSION);
134 print "Digest::SHA::PurePerl.pm Version : ${Digest::SHA::PurePerl::VERSION}\n" if ($Digest::SHA::PurePerl::VERSION);
135 print ("=" x 78 . "\n");
138 sub warning_message() {
139 if ( $opt_d =~ m/^risk$/i ) { # Long Form Warning and Exit
140 print "Warning: Use of this script may pose some risk:\n";
142 print " 1) Using http is subject to man in the middle attack of certdata content\n";
143 print " 2) Default to 'release', but more recent updates may be found in other trees\n";
144 print " 3) certdata.txt file format may change, lag time to update this script\n";
145 print " 4) Generally unwise to blindly trust CAs without manual review & verification\n";
146 print " 5) Mozilla apps use additional security checks aren't represented in certdata\n";
147 print " 6) Use of this script will make a security engineer grind his teeth and\n";
148 print " swear at you. ;)\n";
150 } else { # Short Form Warning
151 print "Warning: Use of this script may pose some risk, -d risk for more details.\n";
156 print "Usage:\t${0} [-b] [-d<certdata>] [-f] [-i] [-l] [-n] [-p<purposes:levels>] [-q] [-s<algorithms>] [-t] [-u] [-v] [-w<l>] [<outputfile>]\n";
157 print "\t-b\tbackup an existing version of ca-bundle.crt\n";
158 print "\t-d\tspecify Mozilla tree to pull certdata.txt or custom URL\n";
159 print "\t\t Valid names are:\n";
160 print "\t\t ", join( ", ", map { ( $_ =~ m/$opt_d/ ) ? "$_ (default)" : "$_" } sort keys %urls ), "\n";
161 print "\t-f\tforce rebuild even if certdata.txt is current\n";
162 print "\t-i\tprint version info about used modules\n";
163 print "\t-l\tprint license info about certdata.txt\n";
164 print "\t-n\tno download of certdata.txt (to use existing)\n";
165 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";
166 print "\t\t Valid purposes are:\n";
167 print wrap("\t\t ","\t\t ", join( ", ", "ALL", @valid_mozilla_trust_purposes ) ), "\n";
168 print "\t\t Valid levels are:\n";
169 print wrap("\t\t ","\t\t ", join( ", ", "ALL", @valid_mozilla_trust_levels ) ), "\n";
170 print "\t-q\tbe really quiet (no progress output at all)\n";
171 print wrap("\t","\t\t", "-s\tcomma separated list of certificate signatures/hashes to output in plain text mode. (default: $default_signature_algorithms)\n");
172 print "\t\t Valid signature algorithms are:\n";
173 print wrap("\t\t ","\t\t ", join( ", ", "ALL", @valid_signature_algorithms ) ), "\n";
174 print "\t-t\tinclude plain text listing of certificates\n";
175 print "\t-u\tunlink (remove) certdata.txt after processing\n";
176 print "\t-v\tbe verbose and print out processed CAs\n";
177 print "\t-w <l>\twrap base64 output lines after <l> chars (default: ${opt_w})\n";
181 sub VERSION_MESSAGE() {
182 print "${0} version ${version} running Perl ${]} on ${^O}\n";
185 warning_message() unless ($opt_q || $url =~ m/^(ht|f)tps:/i );
186 HELP_MESSAGE() if ($opt_h);
191 return defined(List::Util::first { $target eq $_ } @_);
194 # Parses $param_string as a case insensitive comma separated list with optional whitespace
195 # validates that only allowed parameters are supplied
196 sub parse_csv_param($$@) {
197 my $description = shift;
198 my $param_string = shift;
199 my @valid_values = @_;
202 s/^\s+//; # strip leading spaces
203 s/\s+$//; # strip trailing spaces
204 uc $_ # return the modified string as upper case
205 } split( ',', $param_string );
207 # Find all values which are not in the list of valid values or "ALL"
208 my @invalid = grep { !is_in_list($_,"ALL",@valid_values) } @values;
210 if ( scalar(@invalid) > 0 ) {
211 # Tell the user which parameters were invalid and print the standard help message which will exit
212 print "Error: Invalid ", $description, scalar(@invalid) == 1 ? ": " : "s: ", join( ", ", map { "\"$_\"" } @invalid ), "\n";
216 @values = @valid_values if ( is_in_list("ALL",@values) );
223 if ($Digest::SHA::VERSION || $Digest::SHA::PurePerl::VERSION) {
224 open(FILE, $_[0]) or die "Can't open '$_[0]': $!";
226 $result = $MOD_SHA->new(1)->addfile(*FILE)->hexdigest;
229 # Use OpenSSL command if Perl Digest::SHA modules not available
230 $result = (split(/ |\r|\n/,`$openssl dgst -sha1 $_[0]`))[1];
238 open(C, "<$_[0]") || return 0;
241 if($_ =~ /^\#\# SHA1: (.*)/) {
250 if ( $opt_p !~ m/:/ ) {
251 print "Error: Mozilla trust identifier list must include both purposes and levels\n";
255 (my $included_mozilla_trust_purposes_string, my $included_mozilla_trust_levels_string) = split( ':', $opt_p );
256 my @included_mozilla_trust_purposes = parse_csv_param( "trust purpose", $included_mozilla_trust_purposes_string, @valid_mozilla_trust_purposes );
257 my @included_mozilla_trust_levels = parse_csv_param( "trust level", $included_mozilla_trust_levels_string, @valid_mozilla_trust_levels );
259 my @included_signature_algorithms = parse_csv_param( "signature algorithm", $opt_s, @valid_signature_algorithms );
261 sub should_output_cert(%) {
262 my %trust_purposes_by_level = @_;
264 foreach my $level (@included_mozilla_trust_levels) {
265 # for each level we want to output, see if any of our desired purposes are included
266 return 1 if ( defined( List::Util::first { is_in_list( $_, @included_mozilla_trust_purposes ) } @{$trust_purposes_by_level{$level}} ) );
272 my $crt = $ARGV[0] || 'ca-bundle.crt';
273 (my $txt = $url) =~ s@(.*/|\?.*)@@g;
275 my $stdout = $crt eq '-';
279 my $oldsha1 = oldsha1($crt);
281 print STDERR "SHA1 of old file: $oldsha1\n" if (!$opt_q);
283 print STDERR "Downloading '$txt' ...\n" if (!$opt_q);
285 if($curl && !$opt_n) {
287 $https =~ s/^http:/https:/;
288 print STDERR "Get certdata over HTTPS with curl!\n" if (!$opt_q);
289 my $quiet = $opt_q ? "-s" : "";
290 my @out = `curl -w %{response_code} $quiet -O $https`;
291 if(@out && $out[0] == 200) {
294 print STDERR "Failed downloading HTTPS with curl, trying HTTP with LWP\n" if (!$opt_q);
298 unless ($fetched || ($opt_n and -e $txt)) {
299 my $ua = new LWP::UserAgent(agent => "$0/$version");
301 $resp = $ua->mirror($url, $txt);
302 if ($resp && $resp->code eq '304') {
303 print STDERR "Not modified\n" unless $opt_q;
304 exit 0 if -e $crt && !$opt_f;
308 if( !$resp || $resp->code !~ /^(?:200|304)$/ ) {
309 print STDERR "Unable to download latest data: "
310 . ($resp? $resp->code . ' - ' . $resp->message : "LWP failed") . "\n"
312 exit 1 if -e $crt || ! -r $txt;
316 my $filedate = $resp ? $resp->last_modified : (stat($txt))[9];
317 my $datesrc = "as of";
319 # mxr.mozilla.org gave us a time, hg.mozilla.org does not!
321 $datesrc="downloaded on";
324 # get the hash from the download file
325 my $newsha1= sha1($txt);
327 if(!$opt_f && $oldsha1 eq $newsha1) {
328 print STDERR "Downloaded file identical to previous run\'s source file. Exiting\n";
332 print STDERR "SHA1 of new file: $newsha1\n";
334 my $currentdate = scalar gmtime($filedate);
336 my $format = $opt_t ? "plain text and " : "";
338 open(CRT, '> -') or die "Couldn't open STDOUT: $!\n";
340 open(CRT,">$crt.~") or die "Couldn't open $crt.~: $!\n";
344 ## Bundle of CA Root Certificates
346 ## Certificate data from Mozilla ${datesrc}: ${currentdate}
348 ## This is a bundle of X.509 certificates of public Certificate Authorities
349 ## (CA). These were automatically extracted from Mozilla's root certificates
350 ## file (certdata.txt). This file can be found in the mozilla source tree:
353 ## It contains the certificates in ${format}PEM format and therefore
354 ## can be directly used with curl / libcurl / php_curl, or with
355 ## an Apache+mod_ssl webserver for SSL client authentication.
356 ## Just configure this file as the SSLCACertificateFile.
358 ## Conversion done with mk-ca-bundle.pl version $version.
364 print STDERR "Processing '$txt' ...\n" if (!$opt_q);
368 my $start_of_cert = 0;
370 open(TXT,"$txt") or die "Couldn't open $txt: $!\n";
372 if (/\*\*\*\*\* BEGIN LICENSE BLOCK \*\*\*\*\*/) {
378 last if (/\*\*\*\*\* END LICENSE BLOCK \*\*\*\*\*/);
383 if (/^CVS_ID\s+\"(.*)\"/) {
387 # this is a match for the start of a certificate
388 if (/^CKA_CLASS CK_OBJECT_CLASS CKO_CERTIFICATE/) {
391 if ($start_of_cert && /^CKA_LABEL UTF8 \"(.*)\"/) {
394 my %trust_purposes_by_level;
395 if ($start_of_cert && /^CKA_VALUE MULTILINE_OCTAL/) {
400 my @octets = split(/\\/);
406 # scan forwards until the trust part
408 last if (/^CKA_CLASS CK_OBJECT_CLASS CKO_NSS_TRUST/);
411 # now scan the trust part to determine how we should trust this cert
414 if (/^CKA_TRUST_([A-Z_]+)\s+CK_TRUST\s+CKT_NSS_([A-Z_]+)\s*$/) {
415 if ( !is_in_list($1,@valid_mozilla_trust_purposes) ) {
416 print STDERR "Warning: Unrecognized trust purpose for cert: $caname. Trust purpose: $1. Trust Level: $2\n" if (!$opt_q);
417 } elsif ( !is_in_list($2,@valid_mozilla_trust_levels) ) {
418 print STDERR "Warning: Unrecognized trust level for cert: $caname. Trust purpose: $1. Trust Level: $2\n" if (!$opt_q);
420 push @{$trust_purposes_by_level{$2}}, $1;
425 if ( !should_output_cert(%trust_purposes_by_level) ) {
428 my $encoded = MIME::Base64::encode_base64($data, '');
429 $encoded =~ s/(.{1,${opt_w}})/$1\n/g;
430 my $pem = "-----BEGIN CERTIFICATE-----\n"
432 . "-----END CERTIFICATE-----\n";
433 print CRT "\n$caname\n";
435 my $maxStringLength = length($caname);
437 foreach my $key (keys %trust_purposes_by_level) {
438 my $string = $key . ": " . join(", ", @{$trust_purposes_by_level{$key}});
439 $maxStringLength = List::Util::max( length($string), $maxStringLength );
440 print CRT $string . "\n";
443 print CRT ("=" x $maxStringLength . "\n");
448 foreach my $hash (@included_signature_algorithms) {
449 $pipe = "|$openssl x509 -" . $hash . " -fingerprint -noout -inform PEM";
451 $pipe .= " >> $crt.~";
452 close(CRT) or die "Couldn't close $crt.~: $!";
454 open(TMP, $pipe) or die "Couldn't open openssl pipe: $!";
456 close(TMP) or die "Couldn't close openssl pipe: $!";
458 open(CRT, ">>$crt.~") or die "Couldn't open $crt.~: $!";
461 $pipe = "|$openssl x509 -text -inform PEM";
463 $pipe .= " >> $crt.~";
464 close(CRT) or die "Couldn't close $crt.~: $!";
466 open(TMP, $pipe) or die "Couldn't open openssl pipe: $!";
468 close(TMP) or die "Couldn't close openssl pipe: $!";
470 open(CRT, ">>$crt.~") or die "Couldn't open $crt.~: $!";
473 print STDERR "Parsing: $caname\n" if ($opt_v);
479 close(TXT) or die "Couldn't close $txt: $!\n";
480 close(CRT) or die "Couldn't close $crt.~: $!\n";
482 if ($opt_b && -e $crt) {
484 while (-e "$crt.~${bk}~") {
487 rename $crt, "$crt.~${bk}~" or die "Failed to create backup $crt.~$bk}~: $!\n";
489 unlink( $crt ) or die "Failed to remove $crt: $!\n";
491 rename "$crt.~", $crt or die "Failed to rename $crt.~ to $crt: $!\n";
493 unlink $txt if ($opt_u);
494 print STDERR "Done ($certnum CA certs processed, $skipnum skipped).\n" if (!$opt_q);