1 files changed, 81 insertions, 0 deletions
diff --git a/lib/util/regress/hexchar/hexchar_test.c b/lib/util/regress/hexchar/hexchar_test.c
new file mode 100644
index 0000000..097cbcd
--- /dev/null
+++ b/lib/util/regress/hexchar/hexchar_test.c
@@ -0,0 +1,81 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2014-2015, 2023 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#define SUDO_ERROR_WRAP 0
+
+#include <sudo_compat.h>
+#include <sudo_util.h>
+
+sudo_dso_public int main(int argc, char *argv[]);
+
+struct hexchar_test {
+    char hex[3];
+    int value;
+};
+
+int
+main(int argc, char *argv[])
+{
+    struct hexchar_test *test_data;
+    int i, ntests, result, errors = 0;
+    static const char xdigs_lower[] = "0123456789abcdef";
+    static const char xdigs_upper[] = "0123456789ABCDEF";
+
+    initprogname(argc > 0 ? argv[0] : "hexchar_test");
+
+    /* Build up test data. */
+    ntests = 256 + 256 + 3;
+    test_data = calloc((size_t)ntests, sizeof(*test_data));
+    for (i = 0; i < 256; i++) {
+	/* lower case */
+	test_data[i].value = i;
+	test_data[i].hex[1] = xdigs_lower[ (i & 0x0f)];
+	test_data[i].hex[0] = xdigs_lower[((i & 0xf0) >> 4)];
+	/* upper case */
+	test_data[i + 256].value = i;
+	test_data[i + 256].hex[1] = xdigs_upper[ (i & 0x0f)];
+	test_data[i + 256].hex[0] = xdigs_upper[((i & 0xf0) >> 4)];
+    }
+    /* Also test invalid data */
+    test_data[ntests - 3].hex[0] = '\0';
+    test_data[ntests - 3].value = -1;
+    strlcpy(test_data[ntests - 2].hex, "AG", sizeof(test_data[ntests - 2].hex));
+    test_data[ntests - 2].value = -1;
+    strlcpy(test_data[ntests - 1].hex, "-1", sizeof(test_data[ntests - 1].hex));
+    test_data[ntests - 1].value = -1;
+
+    for (i = 0; i < ntests; i++) {
+	result = sudo_hexchar(test_data[i].hex);
+	if (result != test_data[i].value) {
+	    fprintf(stderr, "%s: expected %d, got %d\n", getprogname(),
+		test_data[i].value, result);
+	    errors++;
+	}
+    }
+    if (ntests != 0) {
+	printf("%s: %d tests run, %d errors, %d%% success rate\n",
+	    getprogname(), ntests, errors, (ntests - errors) * 100 / ntests);
+    }
+    return errors;
+}