From: Simon Josefsson <simon@josefsson.org>
Date: Fri, 9 Feb 2007 06:32:13 +0000 (+0000)
Subject: Don't crash on NULL's.
X-Git-Tag: gnutls_1_7_6~39
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=14c899493c64ce0e08a682f5c2ac45fec2bef36f;p=thirdparty%2Fgnutls.git

Don't crash on NULL's.
---

diff --git a/lib/x509/extensions.c b/lib/x509/extensions.c
index 97fd7d67bc..afe23ae6cd 100644
--- a/lib/x509/extensions.c
+++ b/lib/x509/extensions.c
@@ -997,13 +997,16 @@ _gnutls_x509_ext_extract_proxyCertInfo (int *pathLenConstraint,
       return result;
     }
 
-  *policyLanguage = gnutls_strdup (value.data);
+  if (policyLanguage)
+    *policyLanguage = gnutls_strdup (value.data);
 
   result = _gnutls_x509_read_value (ext, "proxyPolicy.policy", &value, 0);
   if (result == GNUTLS_E_ASN1_ELEMENT_NOT_FOUND)
     {
-      *policy = NULL;
-      *sizeof_policy = 0;
+      if (policy)
+	*policy = NULL;
+      if (sizeof_policy)
+	*sizeof_policy = 0;
     }
   else if (result < 0)
     {
@@ -1013,8 +1016,10 @@ _gnutls_x509_ext_extract_proxyCertInfo (int *pathLenConstraint,
     }
   else
     {
-      *policy = value.data;
-      *sizeof_policy = value.size;
+      if (policy)
+	*policy = value.data;
+      if (sizeof_policy)
+	*sizeof_policy = value.size;
     }
 
   asn1_delete_structure (&ext);