move generic asn1/der functions from check-der.c to here

git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@11600 ec53bebd-3082-4978-b11e-865c3cabbd6b
2003-01-23 10:21:56 +00:00
parent 094ad23abc
commit 515d17106c
2 changed files with 178 additions and 0 deletions
--- a/lib/asn1/check-common.c
+++ b/lib/asn1/check-common.c
@@ -0,0 +1,125 @@
+/*
+ * Copyright (c) 1999 - 2003 Kungliga Tekniska H<>gskolan
+ * (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. 
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+#include <stdio.h>
+#include <string.h>
+#include <err.h>
+#include <roken.h>
+
+#include "check-common.h"
+
+RCSID("$Id$");
+
+static void
+print_bytes (unsigned const char *buf, size_t len)
+{
+    int i;
+
+    for (i = 0; i < len; ++i)
+	printf ("%02x ", buf[i]);
+}
+
+int
+generic_test (const struct test_case *tests,
+	      unsigned ntests,
+	      size_t data_size,
+	      int (*encode)(unsigned char *, size_t, void *, size_t *),
+	      int (*length)(void *),
+	      int (*decode)(unsigned char *, size_t, void *, size_t *),
+	      int (*cmp)(void *a, void *b))
+{
+    unsigned char buf[4711];
+    int i;
+    int failures = 0;
+    void *val = malloc (data_size);
+
+    if (data_size != 0 && val == NULL)
+	err (1, "malloc");
+
+    for (i = 0; i < ntests; ++i) {
+	int ret;
+	size_t sz, consumed_sz, length_sz;
+	unsigned char *beg;
+
+	ret = (*encode) (buf + sizeof(buf) - 1, sizeof(buf),
+			 tests[i].val, &sz);
+	beg = buf + sizeof(buf) - sz;
+	if (ret != 0) {
+	    printf ("encoding of %s failed\n", tests[i].name);
+	    ++failures;
+	}
+	if (sz != tests[i].byte_len) {
+	    printf ("encoding of %s has wrong len (%lu != %lu)\n",
+		    tests[i].name, 
+		    (unsigned long)sz, (unsigned long)tests[i].byte_len);
+	    ++failures;
+	}
+
+	length_sz = (*length) (tests[i].val);
+	if (sz != length_sz) {
+	    printf ("length for %s is bad (%lu != %lu)\n",
+		    tests[i].name, (unsigned long)length_sz, (unsigned long)sz);
+	    ++failures;
+	}
+
+	if (memcmp (beg, tests[i].bytes, tests[i].byte_len) != 0) {
+	    printf ("encoding of %s has bad bytes:\n"
+		    "correct: ", tests[i].name);
+	    print_bytes (tests[i].bytes, tests[i].byte_len);
+	    printf ("\nactual:  ");
+	    print_bytes (beg, sz);
+	    printf ("\n");
+	    ++failures;
+	}
+	ret = (*decode) (beg, sz, val, &consumed_sz);
+	if (ret != 0) {
+	    printf ("decoding of %s failed\n", tests[i].name);
+	    ++failures;
+	}
+	if (sz != consumed_sz) {
+	    printf ("different length decoding %s (%ld != %ld)\n",
+		    tests[i].name, 
+		    (unsigned long)sz, (unsigned long)consumed_sz);
+	    ++failures;
+	}
+	if ((*cmp)(val, tests[i].val) != 0) {
+	    printf ("%s: comparison failed\n", tests[i].name);
+	    ++failures;
+	}
+    }
+    free (val);
+    return failures;
+}