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-rw-r--r--source4/heimdal/lib/asn1/der_format.c105
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
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+++ b/source4/heimdal/lib/asn1/der_format.c
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+/*
+ * 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;
+}