1 files changed, 83 insertions, 0 deletions
diff --git a/testcode/readhex.c b/testcode/readhex.c
new file mode 100644
index 0000000000000..f212ddd747c84
--- /dev/null
+++ b/testcode/readhex.c
@@ -0,0 +1,83 @@
+/*
+ * testcode/readhex.c - read hex data.
+ *
+ * Copyright (c) 2007, NLnet Labs. All rights reserved.
+ *
+ * This software is open source.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ *
+ * 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.
+ *
+ * Neither the name of the NLNET LABS 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 COPYRIGHT HOLDERS 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 REGENTS 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.
+ *
+ */
+/**
+ * \file
+ * Declarations useful for the unit tests.
+ */
+#include "config.h"
+#include <ctype.h>
+#include "testcode/readhex.h"
+#include "util/log.h"
+
+/** skip whitespace */
+static void
+skip_whites(const char** p)
+{
+	while(1) {
+		while(isspace((int)**p))
+			(*p)++;
+		if(**p == ';') {
+			/* comment, skip until newline */
+			while(**p && **p != '\n')
+				(*p)++;
+			if(**p == '\n')
+				(*p)++;
+		} else return;
+	}
+}
+
+/* takes a hex string and puts into buffer */
+void hex_to_buf(ldns_buffer* pkt, const char* hex)
+{
+	const char* p = hex;
+	int val;
+	ldns_buffer_clear(pkt);
+	while(*p) {
+		skip_whites(&p);
+		if(ldns_buffer_position(pkt) == ldns_buffer_limit(pkt))
+			fatal_exit("hex_to_buf: buffer too small");
+		if(!isalnum((int)*p))
+			break;
+		val = ldns_hexdigit_to_int(*p++) << 4;
+		skip_whites(&p);
+		log_assert(*p && isalnum((int)*p));
+		val |= ldns_hexdigit_to_int(*p++);
+		ldns_buffer_write_u8(pkt, (uint8_t)val);
+		skip_whites(&p);
+	}
+	ldns_buffer_flip(pkt);
+}
+