1 files changed, 105 insertions, 0 deletions
diff --git a/source4/heimdal/lib/asn1/der_format.c b/source4/heimdal/lib/asn1/der_format.c
new file mode 100644
index 0000000000..44e39b46c5
--- /dev/null
+++ b/source4/heimdal/lib/asn1/der_format.c
@@ -0,0 +1,105 @@
+/*
+ * Copyright (c) 2005 Kungliga Tekniska Högskolan
+ * (Royal Institute of Technology, Stockholm, Sweden). 
+ * All rights reserved. 
+ *
+ * Redistribution and use in source and binary forms, with or without 
+ * modification, are permitted provided that the following conditions 
+ * are met: 
+ *
+ * 1. Redistributions of source code must retain the above copyright 
+ *    notice, this list of conditions and the following disclaimer. 
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright 
+ *    notice, this list of conditions and the following disclaimer in the 
+ *    documentation and/or other materials provided with the distribution. 
+ *
+ * 3. Neither the name of the Institute nor the names of its contributors 
+ *    may be used to endorse or promote products derived from this software 
+ *    without specific prior written permission. 
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 
+ * SUCH DAMAGE. 
+ */
+
+#include "der_locl.h"
+#include <hex.h>
+
+RCSID("$Id: der_format.c,v 1.2 2006/01/16 23:01:11 lha Exp $");
+
+int
+der_parse_hex_heim_integer (const char *p, heim_integer *data)
+{
+    ssize_t len;
+
+    data->length = 0;
+    data->negative = 0;
+    data->data = NULL;
+
+    if (*p == '-') {
+	p++;
+	data->negative = 1;
+    }
+
+    len = strlen(p);
+    if (len < 0) {
+	data->data = NULL;
+	data->length = 0;
+	return EINVAL;
+    }
+    
+    data->length = (len / 2) + 1;
+    data->data = malloc(data->length);
+    if (data->data == NULL) {
+	data->length = 0;
+	return ENOMEM;
+    }
+
+    len = hex_decode(p, data->data, data->length);
+    if (len < 0) {
+	free(data->data);
+	data->data = NULL;
+	data->length = 0;
+	return EINVAL;
+    }
+
+    {
+	unsigned char *p = data->data;
+	while(*p == 0 && len > 0) {
+	    p++;
+	    len--;
+	}
+	data->length = len;
+	memmove(data->data, p, len);
+    }
+    return 0;
+}
+
+int
+der_print_hex_heim_integer (const heim_integer *data, char **p)
+{
+    ssize_t len;
+    char *q;
+
+    len = hex_encode(data->data, data->length, p);
+    if (len < 0)
+	return ENOMEM;
+
+    if (data->negative) {
+	len = asprintf(&q, "-%s", *p);
+	free(*p);
+	if (len < 0)
+	    return ENOMEM;
+	*p = q;
+    }
+    return 0;
+}