* ext/openssl/lib/openssl/ssl.rb (verify_certificate_identity): fix

  hostname verification. Patched by nahi.

* test/openssl/test_ssl.rb (test_verify_certificate_identity): test for
  above.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@41671 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 13 insertions, 5 deletions

diff --git a/ext/openssl/lib/openssl/ssl.rb b/ext/openssl/lib/openssl/ssl.rb
index bc3b781e64..04eb59246c 100644
--- a/ext/openssl/lib/openssl/ssl.rb
+++ b/ext/openssl/lib/openssl/ssl.rb
@@ -98,14 +98,22 @@ module OpenSSL
       should_verify_common_name = true
       cert.extensions.each{|ext|
         next if ext.oid != "subjectAltName"
-        ext.value.split(/,\s+/).each{|general_name|
-          if /\ADNS:(.*)/ =~ general_name
+        id, ostr = OpenSSL::ASN1.decode(ext.to_der).value
+        sequence = OpenSSL::ASN1.decode(ostr.value)
+        sequence.value.each{|san|
+          case san.tag
+          when 2 # dNSName in GeneralName (RFC5280)
             should_verify_common_name = false
-            reg = Regexp.escape($1).gsub(/\\\*/, "[^.]+")
+            reg = Regexp.escape(san.value).gsub(/\\\*/, "[^.]+")
             return true if /\A#{reg}\z/i =~ hostname
-          elsif /\AIP Address:(.*)/ =~ general_name
+          when 7 # iPAddress in GeneralName (RFC5280)
             should_verify_common_name = false
-            return true if $1 == hostname
+            # follows GENERAL_NAME_print() in x509v3/v3_alt.c
+            if san.value.size == 4
+              return true if san.value.unpack('C*').join('.') == hostname
+            elsif san.value.size == 16
+              return true if san.value.unpack('n*').map { |e| sprintf("%X", e) }.join(':') == hostname
+            end
           end
         }
       }