1#!/usr/bin/perl -w 2# *************************************************************************** 3# * _ _ ____ _ 4# * Project ___| | | | _ \| | 5# * / __| | | | |_) | | 6# * | (__| |_| | _ <| |___ 7# * \___|\___/|_| \_\_____| 8# * 9# * Copyright (C) 1998 - 2014, Daniel Stenberg, <daniel@haxx.se>, et al. 10# * 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. 14# * 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. 18# * 19# * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY 20# * KIND, either express or implied. 21# * 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. 32# 33use Getopt::Std; 34use MIME::Base64; 35use LWP::UserAgent; 36use strict; 37use 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); 38use List::Util; 39use Text::Wrap; 40my $MOD_SHA = "Digest::SHA"; 41eval "require $MOD_SHA"; 42if ($@) { 43 $MOD_SHA = "Digest::SHA::PurePerl"; 44 eval "require $MOD_SHA"; 45} 46 47my %urls = ( 48 'nss' => 49 'http://hg.mozilla.org/projects/nss/raw-file/tip/lib/ckfw/builtins/certdata.txt', 50 'central' => 51 'http://hg.mozilla.org/mozilla-central/raw-file/default/security/nss/lib/ckfw/builtins/certdata.txt', 52 'aurora' => 53 'http://hg.mozilla.org/releases/mozilla-aurora/raw-file/default/security/nss/lib/ckfw/builtins/certdata.txt', 54 'beta' => 55 'http://hg.mozilla.org/releases/mozilla-beta/raw-file/default/security/nss/lib/ckfw/builtins/certdata.txt', 56 'release' => 57 'http://hg.mozilla.org/releases/mozilla-release/raw-file/default/security/nss/lib/ckfw/builtins/certdata.txt', 58); 59 60$opt_d = 'release'; 61 62# If the OpenSSL commandline is not in search path you can configure it here! 63my $openssl = 'openssl'; 64 65my $version = '1.25'; 66 67$opt_w = 76; # default base64 encoded lines length 68 69# default cert types to include in the output (default is to include CAs which may issue SSL server certs) 70my $default_mozilla_trust_purposes = "SERVER_AUTH"; 71my $default_mozilla_trust_levels = "TRUSTED_DELEGATOR"; 72$opt_p = $default_mozilla_trust_purposes . ":" . $default_mozilla_trust_levels; 73 74my @valid_mozilla_trust_purposes = ( 75 "DIGITAL_SIGNATURE", 76 "NON_REPUDIATION", 77 "KEY_ENCIPHERMENT", 78 "DATA_ENCIPHERMENT", 79 "KEY_AGREEMENT", 80 "KEY_CERT_SIGN", 81 "CRL_SIGN", 82 "SERVER_AUTH", 83 "CLIENT_AUTH", 84 "CODE_SIGNING", 85 "EMAIL_PROTECTION", 86 "IPSEC_END_SYSTEM", 87 "IPSEC_TUNNEL", 88 "IPSEC_USER", 89 "TIME_STAMPING", 90 "STEP_UP_APPROVED" 91); 92 93my @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). 98); 99 100my $default_signature_algorithms = $opt_s = "MD5"; 101 102my @valid_signature_algorithms = ( 103 "MD5", 104 "SHA1", 105 "SHA256", 106 "SHA384", 107 "SHA512" 108); 109 110$0 =~ s@.*(/|\\)@@; 111$Getopt::Std::STANDARD_HELP_VERSION = 1; 112getopts('bd:fhilnp:qs:tuvw:'); 113 114if(!defined($opt_d)) { 115 # to make plain "-d" use not cause warnings, and actually still work 116 $opt_d = 'release'; 117} 118 119# Use predefined URL or else custom URL specified on command line. 120my $url = ( defined( $urls{$opt_d} ) ) ? $urls{$opt_d} : $opt_d; 121 122my $curl = `curl -V`; 123 124if ($opt_i) { 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"); 136} 137 138sub 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"; 141 print "\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"; 149 exit; 150 } else { # Short Form Warning 151 print "Warning: Use of this script may pose some risk, -d risk for more details.\n"; 152 } 153} 154 155sub HELP_MESSAGE() { 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: ${opt_w})\n"; 178 exit; 179} 180 181sub VERSION_MESSAGE() { 182 print "${0} version ${version} running Perl ${]} on ${^O}\n"; 183} 184 185warning_message() unless ($opt_q || $url =~ m/^(ht|f)tps:/i ); 186HELP_MESSAGE() if ($opt_h); 187 188sub report($@) { 189 my $output = shift; 190 191 print STDERR $output . "\n" unless $opt_q; 192} 193 194sub is_in_list($@) { 195 my $target = shift; 196 197 return defined(List::Util::first { $target eq $_ } @_); 198} 199 200# Parses $param_string as a case insensitive comma separated list with optional whitespace 201# validates that only allowed parameters are supplied 202sub parse_csv_param($$@) { 203 my $description = shift; 204 my $param_string = shift; 205 my @valid_values = @_; 206 207 my @values = map { 208 s/^\s+//; # strip leading spaces 209 s/\s+$//; # strip trailing spaces 210 uc $_ # return the modified string as upper case 211 } split( ',', $param_string ); 212 213 # Find all values which are not in the list of valid values or "ALL" 214 my @invalid = grep { !is_in_list($_,"ALL",@valid_values) } @values; 215 216 if ( scalar(@invalid) > 0 ) { 217 # Tell the user which parameters were invalid and print the standard help message which will exit 218 print "Error: Invalid ", $description, scalar(@invalid) == 1 ? ": " : "s: ", join( ", ", map { "\"$_\"" } @invalid ), "\n"; 219 HELP_MESSAGE(); 220 } 221 222 @values = @valid_values if ( is_in_list("ALL",@values) ); 223 224 return @values; 225} 226 227sub sha1 { 228 my $result; 229 if ($Digest::SHA::VERSION || $Digest::SHA::PurePerl::VERSION) { 230 open(FILE, $_[0]) or die "Can't open '$_[0]': $!"; 231 binmode(FILE); 232 $result = $MOD_SHA->new(1)->addfile(*FILE)->hexdigest; 233 close(FILE); 234 } else { 235 # Use OpenSSL command if Perl Digest::SHA modules not available 236 $result = (split(/ |\r|\n/,`$openssl dgst -sha1 $_[0]`))[1]; 237 } 238 return $result; 239} 240 241 242sub oldsha1 { 243 my $sha1 = ""; 244 open(C, "<$_[0]") || return 0; 245 while(<C>) { 246 chomp; 247 if($_ =~ /^\#\# SHA1: (.*)/) { 248 $sha1 = $1; 249 last; 250 } 251 } 252 close(C); 253 return $sha1; 254} 255 256if ( $opt_p !~ m/:/ ) { 257 print "Error: Mozilla trust identifier list must include both purposes and levels\n"; 258 HELP_MESSAGE(); 259} 260 261(my $included_mozilla_trust_purposes_string, my $included_mozilla_trust_levels_string) = split( ':', $opt_p ); 262my @included_mozilla_trust_purposes = parse_csv_param( "trust purpose", $included_mozilla_trust_purposes_string, @valid_mozilla_trust_purposes ); 263my @included_mozilla_trust_levels = parse_csv_param( "trust level", $included_mozilla_trust_levels_string, @valid_mozilla_trust_levels ); 264 265my @included_signature_algorithms = parse_csv_param( "signature algorithm", $opt_s, @valid_signature_algorithms ); 266 267sub should_output_cert(%) { 268 my %trust_purposes_by_level = @_; 269 270 foreach my $level (@included_mozilla_trust_levels) { 271 # for each level we want to output, see if any of our desired purposes are included 272 return 1 if ( defined( List::Util::first { is_in_list( $_, @included_mozilla_trust_purposes ) } @{$trust_purposes_by_level{$level}} ) ); 273 } 274 275 return 0; 276} 277 278my $crt = $ARGV[0] || 'ca-bundle.crt'; 279(my $txt = $url) =~ s@(.*/|\?.*)@@g; 280 281my $stdout = $crt eq '-'; 282my $resp; 283my $fetched; 284 285my $oldsha1 = oldsha1($crt); 286 287report "SHA1 of old file: $oldsha1"; 288 289report "Downloading '$txt' ..."; 290 291if($curl && !$opt_n) { 292 my $https = $url; 293 $https =~ s/^http:/https:/; 294 report "Get certdata over HTTPS with curl!"; 295 my $quiet = $opt_q ? "-s" : ""; 296 my @out = `curl -w %{response_code} $quiet -O $https`; 297 if(@out && $out[0] == 200) { 298 $fetched = 1; 299 } else { 300 report "Failed downloading HTTPS with curl, trying HTTP with LWP"; 301 } 302} 303 304unless ($fetched || ($opt_n and -e $txt)) { 305 my $ua = new LWP::UserAgent(agent => "$0/$version"); 306 $ua->env_proxy(); 307 $resp = $ua->mirror($url, $txt); 308 if ($resp && $resp->code eq '304') { 309 report "Not modified"; 310 exit 0 if -e $crt && !$opt_f; 311 } else { 312 $fetched = 1; 313 } 314 if( !$resp || $resp->code !~ /^(?:200|304)$/ ) { 315 report "Unable to download latest data: " 316 . ($resp? $resp->code . ' - ' . $resp->message : "LWP failed"); 317 exit 1 if -e $crt || ! -r $txt; 318 } 319} 320 321my $filedate = $resp ? $resp->last_modified : (stat($txt))[9]; 322my $datesrc = "as of"; 323if(!$filedate) { 324 # mxr.mozilla.org gave us a time, hg.mozilla.org does not! 325 $filedate = time(); 326 $datesrc="downloaded on"; 327} 328 329# get the hash from the download file 330my $newsha1= sha1($txt); 331 332if(!$opt_f && $oldsha1 eq $newsha1) { 333 report "Downloaded file identical to previous run\'s source file. Exiting"; 334 exit; 335} 336 337report "SHA1 of new file: $newsha1"; 338 339my $currentdate = scalar gmtime($filedate); 340 341my $format = $opt_t ? "plain text and " : ""; 342if( $stdout ) { 343 open(CRT, '> -') or die "Couldn't open STDOUT: $!\n"; 344} else { 345 open(CRT,">$crt.~") or die "Couldn't open $crt.~: $!\n"; 346} 347print CRT <<EOT; 348## 349## Bundle of CA Root Certificates 350## 351## Certificate data from Mozilla ${datesrc}: ${currentdate} 352## 353## This is a bundle of X.509 certificates of public Certificate Authorities 354## (CA). These were automatically extracted from Mozilla's root certificates 355## file (certdata.txt). This file can be found in the mozilla source tree: 356## ${url} 357## 358## It contains the certificates in ${format}PEM format and therefore 359## can be directly used with curl / libcurl / php_curl, or with 360## an Apache+mod_ssl webserver for SSL client authentication. 361## Just configure this file as the SSLCACertificateFile. 362## 363## Conversion done with mk-ca-bundle.pl version $version. 364## SHA1: $newsha1 365## 366 367EOT 368 369report "Processing '$txt' ..."; 370my $caname; 371my $certnum = 0; 372my $skipnum = 0; 373my $start_of_cert = 0; 374 375open(TXT,"$txt") or die "Couldn't open $txt: $!\n"; 376while (<TXT>) { 377 if (/\*\*\*\*\* BEGIN LICENSE BLOCK \*\*\*\*\*/) { 378 print CRT; 379 print if ($opt_l); 380 while (<TXT>) { 381 print CRT; 382 print if ($opt_l); 383 last if (/\*\*\*\*\* END LICENSE BLOCK \*\*\*\*\*/); 384 } 385 } 386 next if /^#|^\s*$/; 387 chomp; 388 if (/^CVS_ID\s+\"(.*)\"/) { 389 print CRT "# $1\n"; 390 } 391 392 # this is a match for the start of a certificate 393 if (/^CKA_CLASS CK_OBJECT_CLASS CKO_CERTIFICATE/) { 394 $start_of_cert = 1 395 } 396 if ($start_of_cert && /^CKA_LABEL UTF8 \"(.*)\"/) { 397 $caname = $1; 398 } 399 my %trust_purposes_by_level; 400 if ($start_of_cert && /^CKA_VALUE MULTILINE_OCTAL/) { 401 my $data; 402 while (<TXT>) { 403 last if (/^END/); 404 chomp; 405 my @octets = split(/\\/); 406 shift @octets; 407 for (@octets) { 408 $data .= chr(oct); 409 } 410 } 411 # scan forwards until the trust part 412 while (<TXT>) { 413 last if (/^CKA_CLASS CK_OBJECT_CLASS CKO_NSS_TRUST/); 414 chomp; 415 } 416 # now scan the trust part to determine how we should trust this cert 417 while (<TXT>) { 418 last if (/^#/); 419 if (/^CKA_TRUST_([A-Z_]+)\s+CK_TRUST\s+CKT_NSS_([A-Z_]+)\s*$/) { 420 if ( !is_in_list($1,@valid_mozilla_trust_purposes) ) { 421 report "Warning: Unrecognized trust purpose for cert: $caname. Trust purpose: $1. Trust Level: $2"; 422 } elsif ( !is_in_list($2,@valid_mozilla_trust_levels) ) { 423 report "Warning: Unrecognized trust level for cert: $caname. Trust purpose: $1. Trust Level: $2"; 424 } else { 425 push @{$trust_purposes_by_level{$2}}, $1; 426 } 427 } 428 } 429 430 if ( !should_output_cert(%trust_purposes_by_level) ) { 431 $skipnum ++; 432 } else { 433 my $encoded = MIME::Base64::encode_base64($data, ''); 434 $encoded =~ s/(.{1,${opt_w}})/$1\n/g; 435 my $pem = "-----BEGIN CERTIFICATE-----\n" 436 . $encoded 437 . "-----END CERTIFICATE-----\n"; 438 print CRT "\n$caname\n"; 439 440 my $maxStringLength = length($caname); 441 if ($opt_t) { 442 foreach my $key (keys %trust_purposes_by_level) { 443 my $string = $key . ": " . join(", ", @{$trust_purposes_by_level{$key}}); 444 $maxStringLength = List::Util::max( length($string), $maxStringLength ); 445 print CRT $string . "\n"; 446 } 447 } 448 print CRT ("=" x $maxStringLength . "\n"); 449 if (!$opt_t) { 450 print CRT $pem; 451 } else { 452 my $pipe = ""; 453 foreach my $hash (@included_signature_algorithms) { 454 $pipe = "|$openssl x509 -" . $hash . " -fingerprint -noout -inform PEM"; 455 if (!$stdout) { 456 $pipe .= " >> $crt.~"; 457 close(CRT) or die "Couldn't close $crt.~: $!"; 458 } 459 open(TMP, $pipe) or die "Couldn't open openssl pipe: $!"; 460 print TMP $pem; 461 close(TMP) or die "Couldn't close openssl pipe: $!"; 462 if (!$stdout) { 463 open(CRT, ">>$crt.~") or die "Couldn't open $crt.~: $!"; 464 } 465 } 466 $pipe = "|$openssl x509 -text -inform PEM"; 467 if (!$stdout) { 468 $pipe .= " >> $crt.~"; 469 close(CRT) or die "Couldn't close $crt.~: $!"; 470 } 471 open(TMP, $pipe) or die "Couldn't open openssl pipe: $!"; 472 print TMP $pem; 473 close(TMP) or die "Couldn't close openssl pipe: $!"; 474 if (!$stdout) { 475 open(CRT, ">>$crt.~") or die "Couldn't open $crt.~: $!"; 476 } 477 } 478 report "Parsing: $caname" if ($opt_v); 479 $certnum ++; 480 $start_of_cert = 0; 481 } 482 } 483} 484close(TXT) or die "Couldn't close $txt: $!\n"; 485close(CRT) or die "Couldn't close $crt.~: $!\n"; 486unless( $stdout ) { 487 if ($opt_b && -e $crt) { 488 my $bk = 1; 489 while (-e "$crt.~${bk}~") { 490 $bk++; 491 } 492 rename $crt, "$crt.~${bk}~" or die "Failed to create backup $crt.~$bk}~: $!\n"; 493 } elsif( -e $crt ) { 494 unlink( $crt ) or die "Failed to remove $crt: $!\n"; 495 } 496 rename "$crt.~", $crt or die "Failed to rename $crt.~ to $crt: $!\n"; 497} 498unlink $txt if ($opt_u); 499report "Done ($certnum CA certs processed, $skipnum skipped)."; 500