1: #!/usr/bin/env perl
2: # ***************************************************************************
3: # * _ _ ____ _
4: # * Project ___| | | | _ \| |
5: # * / __| | | | |_) | |
6: # * | (__| |_| | _ <| |___
7: # * \___|\___/|_| \_\_____|
8: # *
9: # * Copyright (C) 1998 - 2020, 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 https://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: #
33: use Encode;
34: use Getopt::Std;
35: use MIME::Base64;
36: use strict;
37: use warnings;
38: 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);
39: use List::Util;
40: use Text::Wrap;
41: use Time::Local;
42: my $MOD_SHA = "Digest::SHA";
43: eval "require $MOD_SHA";
44: if ($@) {
45: $MOD_SHA = "Digest::SHA::PurePerl";
46: eval "require $MOD_SHA";
47: }
48: eval "require LWP::UserAgent";
49:
50: my %urls = (
51: 'nss' =>
52: 'https://hg.mozilla.org/projects/nss/raw-file/default/lib/ckfw/builtins/certdata.txt',
53: 'central' =>
54: 'https://hg.mozilla.org/mozilla-central/raw-file/default/security/nss/lib/ckfw/builtins/certdata.txt',
55: 'beta' =>
56: 'https://hg.mozilla.org/releases/mozilla-beta/raw-file/default/security/nss/lib/ckfw/builtins/certdata.txt',
57: 'release' =>
58: 'https://hg.mozilla.org/releases/mozilla-release/raw-file/default/security/nss/lib/ckfw/builtins/certdata.txt',
59: );
60:
61: $opt_d = 'release';
62:
63: # If the OpenSSL commandline is not in search path you can configure it here!
64: my $openssl = 'openssl';
65:
66: my $version = '1.28';
67:
68: $opt_w = 76; # default base64 encoded lines length
69:
70: # default cert types to include in the output (default is to include CAs which may issue SSL server certs)
71: my $default_mozilla_trust_purposes = "SERVER_AUTH";
72: my $default_mozilla_trust_levels = "TRUSTED_DELEGATOR";
73: $opt_p = $default_mozilla_trust_purposes . ":" . $default_mozilla_trust_levels;
74:
75: my @valid_mozilla_trust_purposes = (
76: "DIGITAL_SIGNATURE",
77: "NON_REPUDIATION",
78: "KEY_ENCIPHERMENT",
79: "DATA_ENCIPHERMENT",
80: "KEY_AGREEMENT",
81: "KEY_CERT_SIGN",
82: "CRL_SIGN",
83: "SERVER_AUTH",
84: "CLIENT_AUTH",
85: "CODE_SIGNING",
86: "EMAIL_PROTECTION",
87: "IPSEC_END_SYSTEM",
88: "IPSEC_TUNNEL",
89: "IPSEC_USER",
90: "TIME_STAMPING",
91: "STEP_UP_APPROVED"
92: );
93:
94: my @valid_mozilla_trust_levels = (
95: "TRUSTED_DELEGATOR", # CAs
96: "NOT_TRUSTED", # Don't trust these certs.
97: "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.
98: "TRUSTED" # This cert is trusted, but only for itself and not for delegates (i.e. it is not a CA).
99: );
100:
101: my $default_signature_algorithms = $opt_s = "MD5";
102:
103: my @valid_signature_algorithms = (
104: "MD5",
105: "SHA1",
106: "SHA256",
107: "SHA384",
108: "SHA512"
109: );
110:
111: $0 =~ s@.*(/|\\)@@;
112: $Getopt::Std::STANDARD_HELP_VERSION = 1;
113: getopts('bd:fhiklmnp:qs:tuvw:');
114:
115: if(!defined($opt_d)) {
116: # to make plain "-d" use not cause warnings, and actually still work
117: $opt_d = 'release';
118: }
119:
120: # Use predefined URL or else custom URL specified on command line.
121: my $url;
122: if(defined($urls{$opt_d})) {
123: $url = $urls{$opt_d};
124: if(!$opt_k && $url !~ /^https:\/\//i) {
125: die "The URL for '$opt_d' is not HTTPS. Use -k to override (insecure).\n";
126: }
127: }
128: else {
129: $url = $opt_d;
130: }
131:
132: my $curl = `curl -V`;
133:
134: if ($opt_i) {
135: print ("=" x 78 . "\n");
136: print "Script Version : $version\n";
137: print "Perl Version : $]\n";
138: print "Operating System Name : $^O\n";
139: print "Getopt::Std.pm Version : ${Getopt::Std::VERSION}\n";
140: print "Encode::Encoding.pm Version : ${Encode::Encoding::VERSION}\n";
141: print "MIME::Base64.pm Version : ${MIME::Base64::VERSION}\n";
142: print "LWP::UserAgent.pm Version : ${LWP::UserAgent::VERSION}\n" if($LWP::UserAgent::VERSION);
143: print "LWP.pm Version : ${LWP::VERSION}\n" if($LWP::VERSION);
144: print "Digest::SHA.pm Version : ${Digest::SHA::VERSION}\n" if ($Digest::SHA::VERSION);
145: print "Digest::SHA::PurePerl.pm Version : ${Digest::SHA::PurePerl::VERSION}\n" if ($Digest::SHA::PurePerl::VERSION);
146: print ("=" x 78 . "\n");
147: }
148:
149: sub warning_message() {
150: if ( $opt_d =~ m/^risk$/i ) { # Long Form Warning and Exit
151: print "Warning: Use of this script may pose some risk:\n";
152: print "\n";
153: print " 1) If you use HTTP URLs they are subject to a man in the middle attack\n";
154: print " 2) Default to 'release', but more recent updates may be found in other trees\n";
155: print " 3) certdata.txt file format may change, lag time to update this script\n";
156: print " 4) Generally unwise to blindly trust CAs without manual review & verification\n";
157: print " 5) Mozilla apps use additional security checks aren't represented in certdata\n";
158: print " 6) Use of this script will make a security engineer grind his teeth and\n";
159: print " swear at you. ;)\n";
160: exit;
161: } else { # Short Form Warning
162: print "Warning: Use of this script may pose some risk, -d risk for more details.\n";
163: }
164: }
165:
166: sub HELP_MESSAGE() {
167: 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";
168: print "\t-b\tbackup an existing version of ca-bundle.crt\n";
169: print "\t-d\tspecify Mozilla tree to pull certdata.txt or custom URL\n";
170: print "\t\t Valid names are:\n";
171: print "\t\t ", join( ", ", map { ( $_ =~ m/$opt_d/ ) ? "$_ (default)" : "$_" } sort keys %urls ), "\n";
172: print "\t-f\tforce rebuild even if certdata.txt is current\n";
173: print "\t-i\tprint version info about used modules\n";
174: print "\t-k\tallow URLs other than HTTPS, enable HTTP fallback (insecure)\n";
175: print "\t-l\tprint license info about certdata.txt\n";
176: print "\t-m\tinclude meta data in output\n";
177: print "\t-n\tno download of certdata.txt (to use existing)\n";
178: 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";
179: print "\t\t Valid purposes are:\n";
180: print wrap("\t\t ","\t\t ", join( ", ", "ALL", @valid_mozilla_trust_purposes ) ), "\n";
181: print "\t\t Valid levels are:\n";
182: print wrap("\t\t ","\t\t ", join( ", ", "ALL", @valid_mozilla_trust_levels ) ), "\n";
183: print "\t-q\tbe really quiet (no progress output at all)\n";
184: print wrap("\t","\t\t", "-s\tcomma separated list of certificate signatures/hashes to output in plain text mode. (default: $default_signature_algorithms)\n");
185: print "\t\t Valid signature algorithms are:\n";
186: print wrap("\t\t ","\t\t ", join( ", ", "ALL", @valid_signature_algorithms ) ), "\n";
187: print "\t-t\tinclude plain text listing of certificates\n";
188: print "\t-u\tunlink (remove) certdata.txt after processing\n";
189: print "\t-v\tbe verbose and print out processed CAs\n";
190: print "\t-w <l>\twrap base64 output lines after <l> chars (default: ${opt_w})\n";
191: exit;
192: }
193:
194: sub VERSION_MESSAGE() {
195: print "${0} version ${version} running Perl ${]} on ${^O}\n";
196: }
197:
198: warning_message() unless ($opt_q || $url =~ m/^(ht|f)tps:/i );
199: HELP_MESSAGE() if ($opt_h);
200:
201: sub report($@) {
202: my $output = shift;
203:
204: print STDERR $output . "\n" unless $opt_q;
205: }
206:
207: sub is_in_list($@) {
208: my $target = shift;
209:
210: return defined(List::Util::first { $target eq $_ } @_);
211: }
212:
213: # Parses $param_string as a case insensitive comma separated list with optional whitespace
214: # validates that only allowed parameters are supplied
215: sub parse_csv_param($$@) {
216: my $description = shift;
217: my $param_string = shift;
218: my @valid_values = @_;
219:
220: my @values = map {
221: s/^\s+//; # strip leading spaces
222: s/\s+$//; # strip trailing spaces
223: uc $_ # return the modified string as upper case
224: } split( ',', $param_string );
225:
226: # Find all values which are not in the list of valid values or "ALL"
227: my @invalid = grep { !is_in_list($_,"ALL",@valid_values) } @values;
228:
229: if ( scalar(@invalid) > 0 ) {
230: # Tell the user which parameters were invalid and print the standard help message which will exit
231: print "Error: Invalid ", $description, scalar(@invalid) == 1 ? ": " : "s: ", join( ", ", map { "\"$_\"" } @invalid ), "\n";
232: HELP_MESSAGE();
233: }
234:
235: @values = @valid_values if ( is_in_list("ALL",@values) );
236:
237: return @values;
238: }
239:
240: sub sha256 {
241: my $result;
242: if ($Digest::SHA::VERSION || $Digest::SHA::PurePerl::VERSION) {
243: open(FILE, $_[0]) or die "Can't open '$_[0]': $!";
244: binmode(FILE);
245: $result = $MOD_SHA->new(256)->addfile(*FILE)->hexdigest;
246: close(FILE);
247: } else {
248: # Use OpenSSL command if Perl Digest::SHA modules not available
249: $result = `"$openssl" dgst -r -sha256 "$_[0]"`;
250: $result =~ s/^([0-9a-f]{64}) .+/$1/is;
251: }
252: return $result;
253: }
254:
255:
256: sub oldhash {
257: my $hash = "";
258: open(C, "<$_[0]") || return 0;
259: while(<C>) {
260: chomp;
261: if($_ =~ /^\#\# SHA256: (.*)/) {
262: $hash = $1;
263: last;
264: }
265: }
266: close(C);
267: return $hash;
268: }
269:
270: if ( $opt_p !~ m/:/ ) {
271: print "Error: Mozilla trust identifier list must include both purposes and levels\n";
272: HELP_MESSAGE();
273: }
274:
275: (my $included_mozilla_trust_purposes_string, my $included_mozilla_trust_levels_string) = split( ':', $opt_p );
276: my @included_mozilla_trust_purposes = parse_csv_param( "trust purpose", $included_mozilla_trust_purposes_string, @valid_mozilla_trust_purposes );
277: my @included_mozilla_trust_levels = parse_csv_param( "trust level", $included_mozilla_trust_levels_string, @valid_mozilla_trust_levels );
278:
279: my @included_signature_algorithms = parse_csv_param( "signature algorithm", $opt_s, @valid_signature_algorithms );
280:
281: sub should_output_cert(%) {
282: my %trust_purposes_by_level = @_;
283:
284: foreach my $level (@included_mozilla_trust_levels) {
285: # for each level we want to output, see if any of our desired purposes are included
286: return 1 if ( defined( List::Util::first { is_in_list( $_, @included_mozilla_trust_purposes ) } @{$trust_purposes_by_level{$level}} ) );
287: }
288:
289: return 0;
290: }
291:
292: my $crt = $ARGV[0] || 'ca-bundle.crt';
293: (my $txt = $url) =~ s@(.*/|\?.*)@@g;
294:
295: my $stdout = $crt eq '-';
296: my $resp;
297: my $fetched;
298:
299: my $oldhash = oldhash($crt);
300:
301: report "SHA256 of old file: $oldhash";
302:
303: if(!$opt_n) {
304: report "Downloading $txt ...";
305:
306: # If we have an HTTPS URL then use curl
307: if($url =~ /^https:\/\//i) {
308: if($curl) {
309: if($curl =~ /^Protocols:.* https( |$)/m) {
310: report "Get certdata with curl!";
311: my $proto = !$opt_k ? "--proto =https" : "";
312: my $quiet = $opt_q ? "-s" : "";
313: my @out = `curl -w %{response_code} $proto $quiet -o "$txt" "$url"`;
314: if(!$? && @out && $out[0] == 200) {
315: $fetched = 1;
316: report "Downloaded $txt";
317: }
318: else {
319: report "Failed downloading via HTTPS with curl";
320: if(-e $txt && !unlink($txt)) {
321: report "Failed to remove '$txt': $!";
322: }
323: }
324: }
325: else {
326: report "curl lacks https support";
327: }
328: }
329: else {
330: report "curl not found";
331: }
332: }
333:
334: # If nothing was fetched then use LWP
335: if(!$fetched) {
336: if($url =~ /^https:\/\//i) {
337: report "Falling back to HTTP";
338: $url =~ s/^https:\/\//http:\/\//i;
339: }
340: if(!$opt_k) {
341: report "URLs other than HTTPS are disabled by default, to enable use -k";
342: exit 1;
343: }
344: report "Get certdata with LWP!";
345: if(!defined(${LWP::UserAgent::VERSION})) {
346: report "LWP is not available (LWP::UserAgent not found)";
347: exit 1;
348: }
349: my $ua = new LWP::UserAgent(agent => "$0/$version");
350: $ua->env_proxy();
351: $resp = $ua->mirror($url, $txt);
352: if($resp && $resp->code eq '304') {
353: report "Not modified";
354: exit 0 if -e $crt && !$opt_f;
355: }
356: else {
357: $fetched = 1;
358: report "Downloaded $txt";
359: }
360: if(!$resp || $resp->code !~ /^(?:200|304)$/) {
361: report "Unable to download latest data: "
362: . ($resp? $resp->code . ' - ' . $resp->message : "LWP failed");
363: exit 1 if -e $crt || ! -r $txt;
364: }
365: }
366: }
367:
368: my $filedate = $resp ? $resp->last_modified : (stat($txt))[9];
369: my $datesrc = "as of";
370: if(!$filedate) {
371: # mxr.mozilla.org gave us a time, hg.mozilla.org does not!
372: $filedate = time();
373: $datesrc="downloaded on";
374: }
375:
376: # get the hash from the download file
377: my $newhash= sha256($txt);
378:
379: if(!$opt_f && $oldhash eq $newhash) {
380: report "Downloaded file identical to previous run\'s source file. Exiting";
381: if($opt_u && -e $txt && !unlink($txt)) {
382: report "Failed to remove $txt: $!\n";
383: }
384: exit;
385: }
386:
387: report "SHA256 of new file: $newhash";
388:
389: my $currentdate = scalar gmtime($filedate);
390:
391: my $format = $opt_t ? "plain text and " : "";
392: if( $stdout ) {
393: open(CRT, '> -') or die "Couldn't open STDOUT: $!\n";
394: } else {
395: open(CRT,">$crt.~") or die "Couldn't open $crt.~: $!\n";
396: }
397: print CRT <<EOT;
398: ##
399: ## Bundle of CA Root Certificates
400: ##
401: ## Certificate data from Mozilla ${datesrc}: ${currentdate} GMT
402: ##
403: ## This is a bundle of X.509 certificates of public Certificate Authorities
404: ## (CA). These were automatically extracted from Mozilla's root certificates
405: ## file (certdata.txt). This file can be found in the mozilla source tree:
406: ## ${url}
407: ##
408: ## It contains the certificates in ${format}PEM format and therefore
409: ## can be directly used with curl / libcurl / php_curl, or with
410: ## an Apache+mod_ssl webserver for SSL client authentication.
411: ## Just configure this file as the SSLCACertificateFile.
412: ##
413: ## Conversion done with mk-ca-bundle.pl version $version.
414: ## SHA256: $newhash
415: ##
416:
417: EOT
418:
419: report "Processing '$txt' ...";
420: my $caname;
421: my $certnum = 0;
422: my $skipnum = 0;
423: my $start_of_cert = 0;
424: my @precert;
425: my $cka_value;
426: my $valid = 1;
427:
428: open(TXT,"$txt") or die "Couldn't open $txt: $!\n";
429: while (<TXT>) {
430: if (/\*\*\*\*\* BEGIN LICENSE BLOCK \*\*\*\*\*/) {
431: print CRT;
432: print if ($opt_l);
433: while (<TXT>) {
434: print CRT;
435: print if ($opt_l);
436: last if (/\*\*\*\*\* END LICENSE BLOCK \*\*\*\*\*/);
437: }
438: }
439: elsif(/^# (Issuer|Serial Number|Subject|Not Valid Before|Not Valid After |Fingerprint \(MD5\)|Fingerprint \(SHA1\)):/) {
440: push @precert, $_;
441: $valid = 1;
442: next;
443: }
444: elsif(/^#|^\s*$/) {
445: undef @precert;
446: next;
447: }
448: chomp;
449:
450: # Example:
451: # CKA_NSS_SERVER_DISTRUST_AFTER MULTILINE_OCTAL
452: # \062\060\060\066\061\067\060\060\060\060\060\060\132
453: # END
454:
455: if (/^CKA_NSS_SERVER_DISTRUST_AFTER (CK_BBOOL CK_FALSE|MULTILINE_OCTAL)/) {
456: if($1 eq "MULTILINE_OCTAL") {
457: my @timestamp;
458: while (<TXT>) {
459: last if (/^END/);
460: chomp;
461: my @octets = split(/\\/);
462: shift @octets;
463: for (@octets) {
464: push @timestamp, chr(oct);
465: }
466: }
467: # A trailing Z in the timestamp signifies UTC
468: if($timestamp[12] ne "Z") {
469: report "distrust date stamp is not using UTC";
470: }
471: # Example date: 200617000000Z
472: # Means 2020-06-17 00:00:00 UTC
473: my $distrustat =
474: timegm($timestamp[10] . $timestamp[11], # second
475: $timestamp[8] . $timestamp[9], # minute
476: $timestamp[6] . $timestamp[7], # hour
477: $timestamp[4] . $timestamp[5], # day
478: ($timestamp[2] . $timestamp[3]) - 1, # month
479: "20" . $timestamp[0] . $timestamp[1]); # year
480: if(time >= $distrustat) {
481: # not trusted anymore
482: $skipnum++;
483: report "Skipping: $caname is not trusted anymore" if ($opt_v);
484: $valid = 0;
485: }
486: else {
487: # still trusted
488: }
489: }
490: next;
491: }
492:
493: # this is a match for the start of a certificate
494: if (/^CKA_CLASS CK_OBJECT_CLASS CKO_CERTIFICATE/) {
495: $start_of_cert = 1
496: }
497: if ($start_of_cert && /^CKA_LABEL UTF8 \"(.*)\"/) {
498: $caname = $1;
499: }
500: my %trust_purposes_by_level;
501: if ($start_of_cert && /^CKA_VALUE MULTILINE_OCTAL/) {
502: $cka_value="";
503: while (<TXT>) {
504: last if (/^END/);
505: chomp;
506: my @octets = split(/\\/);
507: shift @octets;
508: for (@octets) {
509: $cka_value .= chr(oct);
510: }
511: }
512: }
513: if(/^CKA_CLASS CK_OBJECT_CLASS CKO_NSS_TRUST/ && $valid) {
514: # now scan the trust part to determine how we should trust this cert
515: while (<TXT>) {
516: last if (/^#/);
517: if (/^CKA_TRUST_([A-Z_]+)\s+CK_TRUST\s+CKT_NSS_([A-Z_]+)\s*$/) {
518: if ( !is_in_list($1,@valid_mozilla_trust_purposes) ) {
519: report "Warning: Unrecognized trust purpose for cert: $caname. Trust purpose: $1. Trust Level: $2";
520: } elsif ( !is_in_list($2,@valid_mozilla_trust_levels) ) {
521: report "Warning: Unrecognized trust level for cert: $caname. Trust purpose: $1. Trust Level: $2";
522: } else {
523: push @{$trust_purposes_by_level{$2}}, $1;
524: }
525: }
526: }
527:
528: if ( !should_output_cert(%trust_purposes_by_level) ) {
529: $skipnum ++;
530: report "Skipping: $caname" if ($opt_v);
531: } else {
532: my $data = $cka_value;
533: $cka_value = "";
534:
535: if(!length($data)) {
536: # if empty, skip
537: next;
538: }
539: my $encoded = MIME::Base64::encode_base64($data, '');
540: $encoded =~ s/(.{1,${opt_w}})/$1\n/g;
541: my $pem = "-----BEGIN CERTIFICATE-----\n"
542: . $encoded
543: . "-----END CERTIFICATE-----\n";
544: print CRT "\n$caname\n";
545: print CRT @precert if($opt_m);
546: my $maxStringLength = length(decode('UTF-8', $caname, Encode::FB_CROAK | Encode::LEAVE_SRC));
547: if ($opt_t) {
548: foreach my $key (keys %trust_purposes_by_level) {
549: my $string = $key . ": " . join(", ", @{$trust_purposes_by_level{$key}});
550: $maxStringLength = List::Util::max( length($string), $maxStringLength );
551: print CRT $string . "\n";
552: }
553: }
554: print CRT ("=" x $maxStringLength . "\n");
555: if (!$opt_t) {
556: print CRT $pem;
557: } else {
558: my $pipe = "";
559: foreach my $hash (@included_signature_algorithms) {
560: $pipe = "|$openssl x509 -" . $hash . " -fingerprint -noout -inform PEM";
561: if (!$stdout) {
562: $pipe .= " >> $crt.~";
563: close(CRT) or die "Couldn't close $crt.~: $!";
564: }
565: open(TMP, $pipe) or die "Couldn't open openssl pipe: $!";
566: print TMP $pem;
567: close(TMP) or die "Couldn't close openssl pipe: $!";
568: if (!$stdout) {
569: open(CRT, ">>$crt.~") or die "Couldn't open $crt.~: $!";
570: }
571: }
572: $pipe = "|$openssl x509 -text -inform PEM";
573: if (!$stdout) {
574: $pipe .= " >> $crt.~";
575: close(CRT) or die "Couldn't close $crt.~: $!";
576: }
577: open(TMP, $pipe) or die "Couldn't open openssl pipe: $!";
578: print TMP $pem;
579: close(TMP) or die "Couldn't close openssl pipe: $!";
580: if (!$stdout) {
581: open(CRT, ">>$crt.~") or die "Couldn't open $crt.~: $!";
582: }
583: }
584: report "Parsing: $caname" if ($opt_v);
585: $certnum ++;
586: $start_of_cert = 0;
587: }
588: undef @precert;
589: }
590:
591: }
592: close(TXT) or die "Couldn't close $txt: $!\n";
593: close(CRT) or die "Couldn't close $crt.~: $!\n";
594: unless( $stdout ) {
595: if ($opt_b && -e $crt) {
596: my $bk = 1;
597: while (-e "$crt.~${bk}~") {
598: $bk++;
599: }
600: rename $crt, "$crt.~${bk}~" or die "Failed to create backup $crt.~$bk}~: $!\n";
601: } elsif( -e $crt ) {
602: unlink( $crt ) or die "Failed to remove $crt: $!\n";
603: }
604: rename "$crt.~", $crt or die "Failed to rename $crt.~ to $crt: $!\n";
605: }
606: if($opt_u && -e $txt && !unlink($txt)) {
607: report "Failed to remove $txt: $!\n";
608: }
609: report "Done ($certnum CA certs processed, $skipnum skipped).";
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