From b64270d1e45fe7f3241e4c9b6ce60d5ac89bc2e9 Mon Sep 17 00:00:00 2001
From: beck <>
Date: Wed, 15 May 2002 02:29:21 +0000
Subject: OpenSSL 0.9.7 stable 2002 05 08 merge

---
 src/lib/libcrypto/x509v3/v3_lib.c | 80 ++++++++++++++++++++++++++++++++++++++-
 1 file changed, 78 insertions(+), 2 deletions(-)

(limited to 'src/lib/libcrypto/x509v3/v3_lib.c')

diff --git a/src/lib/libcrypto/x509v3/v3_lib.c b/src/lib/libcrypto/x509v3/v3_lib.c
index ea86b9ebb9..482ca8ccf5 100644
--- a/src/lib/libcrypto/x509v3/v3_lib.c
+++ b/src/lib/libcrypto/x509v3/v3_lib.c
@@ -163,8 +163,9 @@ void *X509V3_EXT_d2i(X509_EXTENSION *ext)
 {
 	X509V3_EXT_METHOD *method;
 	unsigned char *p;
-	if(!(method = X509V3_EXT_get(ext)) || !method->d2i) return NULL;
+	if(!(method = X509V3_EXT_get(ext))) return NULL;
 	p = ext->value->data;
+	if(method->it) return ASN1_item_d2i(NULL, &p, ext->value->length, ASN1_ITEM_ptr(method->it));
 	return method->d2i(NULL, &p, ext->value->length);
 }
 
@@ -212,7 +213,7 @@ void *X509V3_get_d2i(STACK_OF(X509_EXTENSION) *x, int nid, int *crit, int *idx)
 	}
 	if(found_ex) {
 		/* Found it */
-		if(crit) *crit = found_ex->critical;
+		if(crit) *crit = X509_EXTENSION_get_critical(found_ex);
 		return X509V3_EXT_d2i(found_ex);
 	}
 
@@ -222,4 +223,79 @@ void *X509V3_get_d2i(STACK_OF(X509_EXTENSION) *x, int nid, int *crit, int *idx)
 	return NULL;
 }
 
+/* This function is a general extension append, replace and delete utility.
+ * The precise operation is governed by the 'flags' value. The 'crit' and
+ * 'value' arguments (if relevant) are the extensions internal structure.
+ */
+
+int X509V3_add1_i2d(STACK_OF(X509_EXTENSION) **x, int nid, void *value,
+					int crit, unsigned long flags)
+{
+	int extidx = -1;
+	int errcode;
+	X509_EXTENSION *ext, *extmp;
+	unsigned long ext_op = flags & X509V3_ADD_OP_MASK;
+
+	/* If appending we don't care if it exists, otherwise
+	 * look for existing extension.
+	 */
+	if(ext_op != X509V3_ADD_APPEND)
+		extidx = X509v3_get_ext_by_NID(*x, nid, -1);
+
+	/* See if extension exists */
+	if(extidx >= 0) {
+		/* If keep existing, nothing to do */
+		if(ext_op == X509V3_ADD_KEEP_EXISTING)
+			return 1;
+		/* If default then its an error */
+		if(ext_op == X509V3_ADD_DEFAULT) {
+			errcode = X509V3_R_EXTENSION_EXISTS;
+			goto err;
+		}
+		/* If delete, just delete it */
+		if(ext_op == X509V3_ADD_DELETE) {
+			if(!sk_X509_EXTENSION_delete(*x, extidx)) return -1;
+			return 1;
+		}
+	} else {
+		/* If replace existing or delete, error since 
+		 * extension must exist
+		 */
+		if((ext_op == X509V3_ADD_REPLACE_EXISTING) ||
+		   (ext_op == X509V3_ADD_DELETE)) {
+			errcode = X509V3_R_EXTENSION_NOT_FOUND;
+			goto err;
+		}
+	}
+
+	/* If we get this far then we have to create an extension:
+	 * could have some flags for alternative encoding schemes...
+	 */
+
+	ext = X509V3_EXT_i2d(nid, crit, value);
+
+	if(!ext) {
+		X509V3err(X509V3_F_X509V3_ADD_I2D, X509V3_R_ERROR_CREATING_EXTENSION);
+		return 0;
+	}
+
+	/* If extension exists replace it.. */
+	if(extidx >= 0) {
+		extmp = sk_X509_EXTENSION_value(*x, extidx);
+		X509_EXTENSION_free(extmp);
+		if(!sk_X509_EXTENSION_set(*x, extidx, ext)) return -1;
+		return 1;
+	}
+
+	if(!*x && !(*x = sk_X509_EXTENSION_new_null())) return -1;
+	if(!sk_X509_EXTENSION_push(*x, ext)) return -1;
+
+	return 1;
+
+	err:
+	if(!(flags & X509V3_ADD_SILENT))
+		X509V3err(X509V3_F_X509V3_ADD_I2D, errcode);
+	return 0;
+}
+
 IMPLEMENT_STACK_OF(X509V3_EXT_METHOD)
-- 
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