mk-ca-bundle: Change URL retrieval to HTTPS-only by default
- Change all predefined Mozilla URLs to HTTPS (Gregory Szorc). - New option -k to allow URLs other than HTTPS and enable HTTP fallback. Prior to this change the default URL retrieval mode was to fall back to HTTP if HTTPS didn't work. Reported-by: Gregory Szorc Closes #1012
This commit is contained in:
Jay Satiro
Daniel Stenberg
Родитель
c30a2d97ed
Коммит
1ad2bdcf11
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@ -32,9 +32,8 @@
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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_m $opt_n $opt_p $opt_q $opt_s $opt_t $opt_u $opt_v $opt_w);
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use vars qw($opt_b $opt_d $opt_f $opt_h $opt_i $opt_k $opt_l $opt_m $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 $MOD_SHA = "Digest::SHA";
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@ -43,18 +42,19 @@ if ($@) {
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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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eval "require LWP::UserAgent";
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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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'https://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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'https://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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'https://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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'https://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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'https://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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@ -62,7 +62,7 @@ $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 = '1.26';
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my $version = '1.27';
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$opt_w = 76; # default base64 encoded lines length
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@ -109,7 +109,7 @@ my @valid_signature_algorithms = (
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$0 =~ s@.*(/|\\)@@;
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$Getopt::Std::STANDARD_HELP_VERSION = 1;
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getopts('bd:fhilmnp:qs:tuvw:');
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getopts('bd:fhiklmnp:qs:tuvw:');
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if(!defined($opt_d)) {
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# to make plain "-d" use not cause warnings, and actually still work
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@ -117,7 +117,16 @@ if(!defined($opt_d)) {
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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 $url;
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if(defined($urls{$opt_d})) {
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$url = $urls{$opt_d};
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if(!$opt_k && $url !~ /^https:\/\//i) {
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die "The URL for '$opt_d' is not HTTPS. Use -k to override (insecure).\n";
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}
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}
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else {
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$url = $opt_d;
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}
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my $curl = `curl -V`;
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@ -128,8 +137,8 @@ if ($opt_i) {
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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 "LWP::UserAgent.pm Version : ${LWP::UserAgent::VERSION}\n" if($LWP::UserAgent::VERSION);
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print "LWP.pm Version : ${LWP::VERSION}\n" if($LWP::VERSION);
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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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@ -139,7 +148,7 @@ 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 " 1) If you use HTTP URLs they are subject to a man in the middle attack\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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@ -153,13 +162,14 @@ sub warning_message() {
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}
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sub HELP_MESSAGE() {
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print "Usage:\t${0} [-b] [-d<certdata>] [-f] [-i] [-l] [-n] [-p<purposes:levels>] [-q] [-s<algorithms>] [-t] [-u] [-v] [-w<l>] [<outputfile>]\n";
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print "Usage:\t${0} [-b] [-d<certdata>] [-f] [-i] [-k] [-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-k\tallow URLs other than HTTPS, enable HTTP fallback (insecure)\n";
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print "\t-l\tprint license info about certdata.txt\n";
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print "\t-m\tinclude meta data in output\n";
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print "\t-n\tno download of certdata.txt (to use existing)\n";
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@ -287,35 +297,68 @@ my $oldhash = oldhash($crt);
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report "SHA256 of old file: $oldhash";
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report "Downloading '$txt' ...";
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if(!$opt_n) {
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report "Downloading $txt ...";
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if($curl && !$opt_n) {
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my $https = $url;
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$https =~ s/^http:/https:/;
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report "Get certdata over HTTPS with curl!";
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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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if(@out && $out[0] == 200) {
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$fetched = 1;
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} else {
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report "Failed downloading HTTPS with curl, trying HTTP with LWP";
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# If we have an HTTPS URL then use curl
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if($url =~ /^https:\/\//i) {
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if($curl) {
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if($curl =~ /^Protocols:.* https( |$)/m) {
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report "Get certdata with curl!";
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my $proto = !$opt_k ? "--proto =https" : "";
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my $quiet = $opt_q ? "-s" : "";
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my @out = `curl -w %{response_code} $proto $quiet -o "$txt" "$url"`;
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if(@out && $out[0] == 200) {
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$fetched = 1;
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report "Downloaded $txt";
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}
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else {
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report "Failed downloading via HTTPS with curl";
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if(-e $txt && !unlink($txt)) {
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report "Failed to remove '$txt': $!";
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}
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}
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}
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else {
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report "curl lacks https support";
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}
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}
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else {
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report "curl not found";
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}
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}
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}
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unless ($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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report "Not modified";
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exit 0 if -e $crt && !$opt_f;
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} else {
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# If nothing was fetched then use LWP
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if(!$fetched) {
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if($url =~ /^https:\/\//i) {
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report "Falling back to HTTP";
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$url =~ s/^https:\/\//http:\/\//i;
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}
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if(!$opt_k) {
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report "URLs other than HTTPS are disabled by default, to enable use -k";
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exit 1;
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}
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report "Get certdata with LWP!";
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if(!defined(${LWP::UserAgent::VERSION})) {
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report "LWP is not available (LWP::UserAgent not found)";
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exit 1;
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}
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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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report "Not modified";
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exit 0 if -e $crt && !$opt_f;
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}
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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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report "Downloaded $txt";
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}
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if(!$resp || $resp->code !~ /^(?:200|304)$/) {
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report "Unable to download latest data: "
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. ($resp? $resp->code . ' - ' . $resp->message : "LWP failed");
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exit 1 if -e $crt || ! -r $txt;
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}
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}
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}
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@ -503,5 +546,7 @@ unless( $stdout ) {
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}
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rename "$crt.~", $crt or die "Failed to rename $crt.~ to $crt: $!\n";
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}
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unlink $txt if ($opt_u);
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if($opt_u && -e $txt && !unlink($txt)) {
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report "Failed to remove $txt: $!\n";
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}
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report "Done ($certnum CA certs processed, $skipnum skipped).";
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