mirror of
https://github.com/moparisthebest/curl
synced 2024-11-10 11:35:07 -05:00
2be6941f42
Prefer usage of Perl modules for sha1 calculation since there might be systems where openssl is not installed or not in path. If openssl is used for sha1 calculation then dont rely on cut since it is usually not available on other systems than Linux.
504 lines
17 KiB
Perl
Executable File
504 lines
17 KiB
Perl
Executable File
#!/usr/bin/perl -w
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# ***************************************************************************
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# * _ _ ____ _
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# * Project ___| | | | _ \| |
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# * / __| | | | |_) | |
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# * | (__| |_| | _ <| |___
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# * \___|\___/|_| \_\_____|
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# *
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# * Copyright (C) 1998 - 2014, Daniel Stenberg, <daniel@haxx.se>, et al.
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# *
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# * This software is licensed as described in the file COPYING, which
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# * you should have received as part of this distribution. The terms
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# * are also available at http://curl.haxx.se/docs/copyright.html.
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# *
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# * You may opt to use, copy, modify, merge, publish, distribute and/or sell
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# * copies of the Software, and permit persons to whom the Software is
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# * furnished to do so, under the terms of the COPYING file.
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# *
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# * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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# * KIND, either express or implied.
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# *
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# ***************************************************************************
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# This Perl script creates a fresh ca-bundle.crt file for use with libcurl.
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# It downloads certdata.txt from Mozilla's source tree (see URL below),
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# then parses certdata.txt and extracts CA Root Certificates into PEM format.
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# These are then processed with the OpenSSL commandline tool to produce the
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# final ca-bundle.crt file.
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# The script is based on the parse-certs script written by Roland Krikava.
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# This Perl script works on almost any platform since its only external
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# dependency is the OpenSSL commandline tool for optional text listing.
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# Hacked by Guenter Knauf.
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#
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use Getopt::Std;
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use MIME::Base64;
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use LWP::UserAgent;
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use strict;
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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);
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use List::Util;
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use Text::Wrap;
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my $MOD_SHA = "Digest::SHA";
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eval "require $MOD_SHA";
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if ($@) {
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$MOD_SHA = "Digest::SHA::PurePerl";
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eval "require $MOD_SHA";
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}
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my %urls = (
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'nss' =>
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'http://hg.mozilla.org/projects/nss/raw-file/tip/lib/ckfw/builtins/certdata.txt',
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'central' =>
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'http://hg.mozilla.org/mozilla-central/raw-file/default/security/nss/lib/ckfw/builtins/certdata.txt',
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'aurora' =>
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'http://hg.mozilla.org/releases/mozilla-aurora/raw-file/default/security/nss/lib/ckfw/builtins/certdata.txt',
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'beta' =>
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'http://hg.mozilla.org/releases/mozilla-beta/raw-file/default/security/nss/lib/ckfw/builtins/certdata.txt',
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'release' =>
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'http://hg.mozilla.org/releases/mozilla-release/raw-file/default/security/nss/lib/ckfw/builtins/certdata.txt',
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);
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$opt_d = 'release';
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# If the OpenSSL commandline is not in search path you can configure it here!
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my $openssl = 'openssl';
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my $version = '1.25';
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$opt_w = 76; # default base64 encoded lines length
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# default cert types to include in the output (default is to include CAs which may issue SSL server certs)
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my $default_mozilla_trust_purposes = "SERVER_AUTH";
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my $default_mozilla_trust_levels = "TRUSTED_DELEGATOR";
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$opt_p = $default_mozilla_trust_purposes . ":" . $default_mozilla_trust_levels;
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my @valid_mozilla_trust_purposes = (
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"DIGITAL_SIGNATURE",
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"NON_REPUDIATION",
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"KEY_ENCIPHERMENT",
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"DATA_ENCIPHERMENT",
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"KEY_AGREEMENT",
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"KEY_CERT_SIGN",
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"CRL_SIGN",
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"SERVER_AUTH",
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"CLIENT_AUTH",
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"CODE_SIGNING",
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"EMAIL_PROTECTION",
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"IPSEC_END_SYSTEM",
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"IPSEC_TUNNEL",
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"IPSEC_USER",
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"TIME_STAMPING",
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"STEP_UP_APPROVED"
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);
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my @valid_mozilla_trust_levels = (
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"TRUSTED_DELEGATOR", # CAs
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"NOT_TRUSTED", # Don't trust these certs.
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"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.
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"TRUSTED" # This cert is trusted, but only for itself and not for delegates (i.e. it is not a CA).
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);
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my $default_signature_algorithms = $opt_s = "MD5";
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my @valid_signature_algorithms = (
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"MD5",
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"SHA1",
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"SHA256",
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"SHA384",
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"SHA512"
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);
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$0 =~ s@.*(/|\\)@@;
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$Getopt::Std::STANDARD_HELP_VERSION = 1;
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getopts('bd:fhilnp:qs:tuvw:');
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if(!defined($opt_d)) {
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# to make plain "-d" use not cause warnings, and actually still work
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$opt_d = 'release';
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}
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# Use predefined URL or else custom URL specified on command line.
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my $url = ( defined( $urls{$opt_d} ) ) ? $urls{$opt_d} : $opt_d;
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my $curl=`curl -V`;
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if ($opt_i) {
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print ("=" x 78 . "\n");
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print "Script Version : $version\n";
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print "Perl Version : $]\n";
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print "Operating System Name : $^O\n";
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print "Getopt::Std.pm Version : ${Getopt::Std::VERSION}\n";
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print "MIME::Base64.pm Version : ${MIME::Base64::VERSION}\n";
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print "LWP::UserAgent.pm Version : ${LWP::UserAgent::VERSION}\n";
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print "LWP.pm Version : ${LWP::VERSION}\n";
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print "Digest::SHA.pm Version : ${Digest::SHA::VERSION}\n" if ($Digest::SHA::VERSION);
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print "Digest::SHA::PurePerl.pm Version : ${Digest::SHA::PurePerl::VERSION}\n" if ($Digest::SHA::PurePerl::VERSION);
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print ("=" x 78 . "\n");
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}
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sub WARNING_MESSAGE() {
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if ( $opt_d =~ m/^risk$/i ) { # Long Form Warning and Exit
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print "Warning: Use of this script may pose some risk:\n";
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print "\n";
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print " 1) Using http is subject to man in the middle attack of certdata content\n";
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print " 2) Default to 'release', but more recent updates may be found in other trees\n";
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print " 3) certdata.txt file format may change, lag time to update this script\n";
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print " 4) Generally unwise to blindly trust CAs without manual review & verification\n";
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print " 5) Mozilla apps use additional security checks aren't represented in certdata\n";
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print " 6) Use of this script will make a security engineer grind his teeth and\n";
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print " swear at you. ;)\n";
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exit;
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} else { # Short Form Warning
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print "Warning: Use of this script may pose some risk, -d risk for more details.\n";
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}
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}
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sub HELP_MESSAGE() {
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print "Usage:\t${0} [-b] [-d<certdata>] [-f] [-i] [-l] [-n] [-p<purposes:levels>] [-q] [-s<algorithms>] [-t] [-u] [-v] [-w<l>] [<outputfile>]\n";
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print "\t-b\tbackup an existing version of ca-bundle.crt\n";
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print "\t-d\tspecify Mozilla tree to pull certdata.txt or custom URL\n";
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print "\t\t Valid names are:\n";
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print "\t\t ", join( ", ", map { ( $_ =~ m/$opt_d/ ) ? "$_ (default)" : "$_" } sort keys %urls ), "\n";
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print "\t-f\tforce rebuild even if certdata.txt is current\n";
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print "\t-i\tprint version info about used modules\n";
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print "\t-l\tprint license info about certdata.txt\n";
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print "\t-n\tno download of certdata.txt (to use existing)\n";
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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";
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print "\t\t Valid purposes are:\n";
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print wrap("\t\t ","\t\t ", join( ", ", "ALL", @valid_mozilla_trust_purposes ) ), "\n";
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print "\t\t Valid levels are:\n";
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print wrap("\t\t ","\t\t ", join( ", ", "ALL", @valid_mozilla_trust_levels ) ), "\n";
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print "\t-q\tbe really quiet (no progress output at all)\n";
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print wrap("\t","\t\t", "-s\tcomma separated list of certificate signatures/hashes to output in plain text mode. (default: $default_signature_algorithms)\n");
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print "\t\t Valid signature algorithms are:\n";
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print wrap("\t\t ","\t\t ", join( ", ", "ALL", @valid_signature_algorithms ) ), "\n";
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print "\t-t\tinclude plain text listing of certificates\n";
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print "\t-u\tunlink (remove) certdata.txt after processing\n";
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print "\t-v\tbe verbose and print out processed CAs\n";
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print "\t-w <l>\twrap base64 output lines after <l> chars (default: ${opt_w})\n";
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exit;
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}
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sub VERSION_MESSAGE() {
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print "${0} version ${version} running Perl ${]} on ${^O}\n";
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}
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WARNING_MESSAGE() unless ($opt_q || $url =~ m/^(ht|f)tps:/i );
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HELP_MESSAGE() if ($opt_h);
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sub IS_IN_LIST($@) {
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my $target = shift;
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return defined(List::Util::first { $target eq $_ } @_);
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}
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# Parses $param_string as a case insensitive comma separated list with optional whitespace
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# validates that only allowed parameters are supplied
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sub PARSE_CSV_PARAM($$@) {
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my $description = shift;
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my $param_string = shift;
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my @valid_values = @_;
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my @values = map {
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s/^\s+//; # strip leading spaces
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s/\s+$//; # strip trailing spaces
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uc $_ # return the modified string as upper case
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} split( ',', $param_string );
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# Find all values which are not in the list of valid values or "ALL"
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my @invalid = grep { !IS_IN_LIST($_,"ALL",@valid_values) } @values;
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if ( scalar(@invalid) > 0 ) {
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# Tell the user which parameters were invalid and print the standard help message which will exit
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print "Error: Invalid ", $description, scalar(@invalid) == 1 ? ": " : "s: ", join( ", ", map { "\"$_\"" } @invalid ), "\n";
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HELP_MESSAGE();
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}
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@values = @valid_values if ( IS_IN_LIST("ALL",@values) );
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return @values;
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}
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sub sha1 {
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my $result;
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if ($Digest::SHA::VERSION || $Digest::SHA::PurePerl::VERSION) {
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open(FILE, $_[0]) or die "Can't open '$_[0]': $!";
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binmode(FILE);
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$result = $MOD_SHA->new(1)->addfile(*FILE)->hexdigest;
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close(FILE);
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} else {
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# Use OpenSSL command if Perl Digest::SHA modules not available
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$result = (split(/ |\r|\n/,`$openssl dgst -sha1 $_[0]`))[1];
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}
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return $result;
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}
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sub oldsha1 {
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my ($crt)=@_;
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my $sha1="";
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open(C, "<$crt") || return 0;
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while(<C>) {
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chomp;
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if($_ =~ /^\#\# SHA1: (.*)/) {
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$sha1 = $1;
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last;
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}
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}
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close(C);
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return $sha1;
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}
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if ( $opt_p !~ m/:/ ) {
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print "Error: Mozilla trust identifier list must include both purposes and levels\n";
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HELP_MESSAGE();
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}
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(my $included_mozilla_trust_purposes_string, my $included_mozilla_trust_levels_string) = split( ':', $opt_p );
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my @included_mozilla_trust_purposes = PARSE_CSV_PARAM( "trust purpose", $included_mozilla_trust_purposes_string, @valid_mozilla_trust_purposes );
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my @included_mozilla_trust_levels = PARSE_CSV_PARAM( "trust level", $included_mozilla_trust_levels_string, @valid_mozilla_trust_levels );
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my @included_signature_algorithms = PARSE_CSV_PARAM( "signature algorithm", $opt_s, @valid_signature_algorithms );
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sub SHOULD_OUTPUT_CERT(%) {
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my %trust_purposes_by_level = @_;
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foreach my $level (@included_mozilla_trust_levels) {
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# for each level we want to output, see if any of our desired purposes are included
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return 1 if ( defined( List::Util::first { IS_IN_LIST( $_, @included_mozilla_trust_purposes ) } @{$trust_purposes_by_level{$level}} ) );
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}
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return 0;
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}
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my $crt = $ARGV[0] || 'ca-bundle.crt';
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(my $txt = $url) =~ s@(.*/|\?.*)@@g;
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my $stdout = $crt eq '-';
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my $resp;
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my $fetched;
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my $oldsha1= oldsha1($crt);
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print STDERR "SHA1 of old file: $oldsha1\n" if (!$opt_q);
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print STDERR "Downloading '$txt' ...\n" if (!$opt_q);
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if($curl && !$opt_n) {
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my $https = $url;
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$https =~ s/^http:/https:/;
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printf "Get certdata over HTTPS with curl!\n", $https;
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my $quiet = $opt_q?"-s":"";
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my @out = `curl -w %{response_code} $quiet -O $https`;
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my $code = 0;
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if(@out) {
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$code = $out[0];
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}
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if($code == 200) {
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$fetched = 1;
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}
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else {
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print STDERR "Failed downloading HTTPS with curl, trying HTTP with LWP\n"
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unless $opt_q;
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}
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}
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unless ($fetched || ($opt_n and -e $txt)) {
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my $ua = new LWP::UserAgent(agent => "$0/$version");
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$ua->env_proxy();
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$resp = $ua->mirror($url, $txt);
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if ($resp && $resp->code eq '304') {
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print STDERR "Not modified\n" unless $opt_q;
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exit 0 if -e $crt && !$opt_f;
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} else {
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$fetched = 1;
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}
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if( !$resp || $resp->code !~ /^(?:200|304)$/ ) {
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print STDERR "Unable to download latest data: "
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. ($resp? $resp->code . ' - ' . $resp->message : "LWP failed") . "\n"
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unless $opt_q;
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exit 1 if -e $crt || ! -r $txt;
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}
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}
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my $filedate = $resp ? $resp->last_modified : (stat($txt))[9];
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my $datesrc = "as of";
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if(!$filedate) {
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# mxr.mozilla.org gave us a time, hg.mozilla.org does not!
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$filedate = time();
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$datesrc="downloaded on";
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}
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# get the hash from the download file
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my $newsha1= sha1($txt);
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if($oldsha1 eq $newsha1) {
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print STDERR "Downloaded file identical to previous run\'s source file. Exiting\n";
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exit;
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}
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print STDERR "SHA1 of new file: $newsha1\n";
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my $currentdate = scalar gmtime($filedate);
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my $format = $opt_t ? "plain text and " : "";
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if( $stdout ) {
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open(CRT, '> -') or die "Couldn't open STDOUT: $!\n";
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} else {
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open(CRT,">$crt.~") or die "Couldn't open $crt.~: $!\n";
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}
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print CRT <<EOT;
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##
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## Bundle of CA Root Certificates
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##
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## Certificate data from Mozilla ${datesrc}: ${currentdate}
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##
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## This is a bundle of X.509 certificates of public Certificate Authorities
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## (CA). These were automatically extracted from Mozilla's root certificates
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## file (certdata.txt). This file can be found in the mozilla source tree:
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## ${url}
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##
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## It contains the certificates in ${format}PEM format and therefore
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## can be directly used with curl / libcurl / php_curl, or with
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## an Apache+mod_ssl webserver for SSL client authentication.
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## Just configure this file as the SSLCACertificateFile.
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##
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## Conversion done with mk-ca-bundle.pl verison $version.
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## SHA1: $newsha1
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##
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EOT
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print STDERR "Processing '$txt' ...\n" if (!$opt_q);
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my $caname;
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my $certnum = 0;
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my $skipnum = 0;
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my $start_of_cert = 0;
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open(TXT,"$txt") or die "Couldn't open $txt: $!\n";
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while (<TXT>) {
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if (/\*\*\*\*\* BEGIN LICENSE BLOCK \*\*\*\*\*/) {
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print CRT;
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print if ($opt_l);
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while (<TXT>) {
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print CRT;
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print if ($opt_l);
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last if (/\*\*\*\*\* END LICENSE BLOCK \*\*\*\*\*/);
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}
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}
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next if /^#|^\s*$/;
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chomp;
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if (/^CVS_ID\s+\"(.*)\"/) {
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print CRT "# $1\n";
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}
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# this is a match for the start of a certificate
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if (/^CKA_CLASS CK_OBJECT_CLASS CKO_CERTIFICATE/) {
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$start_of_cert = 1
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}
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if ($start_of_cert && /^CKA_LABEL UTF8 \"(.*)\"/) {
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$caname = $1;
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}
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my %trust_purposes_by_level;
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if ($start_of_cert && /^CKA_VALUE MULTILINE_OCTAL/) {
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my $data;
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while (<TXT>) {
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last if (/^END/);
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chomp;
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my @octets = split(/\\/);
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shift @octets;
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for (@octets) {
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$data .= chr(oct);
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}
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}
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# scan forwards until the trust part
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while (<TXT>) {
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last if (/^CKA_CLASS CK_OBJECT_CLASS CKO_NSS_TRUST/);
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chomp;
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}
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# now scan the trust part to determine how we should trust this cert
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while (<TXT>) {
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last if (/^#/);
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if (/^CKA_TRUST_([A-Z_]+)\s+CK_TRUST\s+CKT_NSS_([A-Z_]+)\s*$/) {
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if ( !IS_IN_LIST($1,@valid_mozilla_trust_purposes) ) {
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print STDERR "Warning: Unrecognized trust purpose for cert: $caname. Trust purpose: $1. Trust Level: $2\n" if (!$opt_q);
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} elsif ( !IS_IN_LIST($2,@valid_mozilla_trust_levels) ) {
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print STDERR "Warning: Unrecognized trust level for cert: $caname. Trust purpose: $1. Trust Level: $2\n" if (!$opt_q);
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} else {
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push @{$trust_purposes_by_level{$2}}, $1;
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}
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}
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}
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if ( !SHOULD_OUTPUT_CERT(%trust_purposes_by_level) ) {
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$skipnum ++;
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|
} 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);
|