[PATCH v2 1/2] vpnmain.cgi: Fix for 2nd part of bug10595

[Adolf Belka <adolf.belka@ipfire.org>]

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- Bug10595 had two parts in it and was closed after the first part was fixed. The second
   part was still unfixed at that time. I cam across it when checking out an open bug on
   a similar issue with OpenVPN.
- I found the section that checks on the CA Name and modified it to also allow spaces.
- Having modified that then the subroutines getsubjectfromcert and getCNfromcert required
   modifications otherwise the openssl statement only got a filename with the first
   portion of the ca name until the first space was encountered. This v2 version of this
   patch set has the safe approach suggested by @Michael.
- I am open to any suggestions for improvements to how I implemented the use of the
   &General::system_output function
- Tested this change out on my vm and it worked fine. I was able to upload a ca
   certificate into IPSec and use spaces in the CA Name.
- Changed the test for the CA_NAME to allow spaces. Change also made to en.pl file

Fixes: Bug10595 part 2
Tested-by: Adolf Belka <adolf.belka(a)ipfire.org>
Signed-off-by: Adolf Belka <adolf.belka(a)ipfire.org>
---
 html/cgi-bin/vpnmain.cgi | 34 ++++++++++++++++++++--------------
 1 file changed, 20 insertions(+), 14 deletions(-)
 mode change 100755 => 100644 html/cgi-bin/vpnmain.cgi

diff --git a/html/cgi-bin/vpnmain.cgi b/html/cgi-bin/vpnmain.cgi
old mode 100755
new mode 100644
index a1d0f0e2a..c11fb0dc8
--- a/html/cgi-bin/vpnmain.cgi
+++ b/html/cgi-bin/vpnmain.cgi
@@ -245,13 +245,16 @@ sub callssl ($) {
 ###
 sub getCNfromcert ($) {
 	#&General::log("ipsec", "Extracting name from $_[0]...");
-	my $temp = `/usr/bin/openssl x509 -text -in $_[0]`;
-	$temp =~ /Subject:.*CN\s*=\s*(.*)[\n]/;
-	$temp = $1;
-	$temp =~ s+/Email+, E+;
-	$temp =~ s/ ST = / S = /;
-	$temp =~ s/,//g;
-	$temp =~ s/\'//g;
+	my @output = &General::system_output("/usr/bin/openssl", "x509", "-text", "-in", "$_[0]");
+	my $temp;
+	foreach my $line (@output) {
+		$line =~ /Subject:.*CN\s*=\s*(.*)[\n]/;
+		$temp = $1;
+		$temp =~ s+/Email+, E+;
+		$temp =~ s/ ST = / S = /;
+		$temp =~ s/,//g;
+		$temp =~ s/\'//g;
+	}
 	return $temp;
 }
 ###
@@ -259,11 +262,14 @@ sub getCNfromcert ($) {
 ###
 sub getsubjectfromcert ($) {
 	#&General::log("ipsec", "Extracting subject from $_[0]...");
-	my $temp = `/usr/bin/openssl x509 -text -in $_[0]`;
-	$temp =~ /Subject: (.*)[\n]/;
-	$temp = $1;
-	$temp =~ s+/Email+, E+;
-	$temp =~ s/ ST = / S = /;
+	my @output = &General::system_output("/usr/bin/openssl", "x509", "-text", "-in", "$_[0]");
+	my $temp;
+	foreach my $line (@output) {
+		$line =~ /Subject: (.*)[\n]/;
+		$temp = $1;
+		$temp =~ s+/Email+, E+;
+		$temp =~ s/ ST = / S = /;
+	}
 	return $temp;
 }
 ###
@@ -644,8 +650,8 @@ END
 } elsif ($cgiparams{'ACTION'} eq $Lang::tr{'upload ca certificate'}) {
 	&General::readhasharray("${General::swroot}/vpn/caconfig", \%cahash);
 
-	if ($cgiparams{'CA_NAME'} !~ /^[a-zA-Z0-9]+$/) {
-		$errormessage = $Lang::tr{'name must only contain characters'};
+	if ($cgiparams{'CA_NAME'} !~ /^[a-zA-Z0-9 ]*$/) {
+		$errormessage = $Lang::tr{'ca name must only contain characters and spaces'};
 		goto UPLOADCA_ERROR;
 	}
 
-- 
2.48.1