1 files changed, 123 insertions, 0 deletions
diff --git a/tests/sys/netinet/libalias/util.c b/tests/sys/netinet/libalias/util.c
new file mode 100644
index 000000000000..8ceb8355c8ff
--- /dev/null
+++ b/tests/sys/netinet/libalias/util.c
@@ -0,0 +1,123 @@
+/*
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
+ * Copyright 2021 Lutz Donnerhacke
+ *
+ * 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 copyright holder 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 COPYRIGHT HOLDER 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 <stdio.h>
+#include <stdlib.h>
+
+#include <netinet/in.h>
+
+#include "util.h"
+
+/* common ip ranges */
+struct in_addr masq = { htonl(0x01020304) };
+struct in_addr pub  = { htonl(0x0102dead) };
+struct in_addr pub2 = { htonl(0x0102beef) };
+struct in_addr prv1 = { htonl(0x0a00dead) };
+struct in_addr prv2 = { htonl(0xac10dead) };
+struct in_addr prv3 = { htonl(0xc0a8dead) };
+struct in_addr cgn  = { htonl(0x6440dead) };
+struct in_addr ext  = { htonl(0x12345678) };
+struct in_addr ANY_ADDR = { 0 };
+
+#define REQUIRE(x)	do {				\
+	if (!(x)) {					\
+		fprintf(stderr, "Failed in %s %s:%d.\n",\
+		    __FUNCTION__, __FILE__, __LINE__);	\
+		exit(-1);				\
+	}						\
+} while(0)
+
+int
+randcmp(const void *a, const void *b)
+{
+	int res, r = rand();
+
+	(void)a;
+	(void)b;
+	res = (r/4 < RAND_MAX/9) ? 1
+	    : (r/5 < RAND_MAX/9) ? 0
+	    : -1;
+	return (res);
+}
+
+void
+hexdump(void *p, size_t len)
+{
+	size_t i;
+	unsigned char *c = p;
+	
+	for (i = 0; i < len; i++) {
+		printf(" %02x", c[i]);
+		switch (i & 0xf) {
+		case 0xf: printf("\n"); break;
+		case 0x7: printf(" "); break;
+		default:  break;
+		}
+	}
+	if ((i & 0xf) != 0x0)
+		printf("\n");
+}
+
+struct ip *
+ip_packet(u_char protocol, size_t len)
+{
+	struct ip * p;
+
+	REQUIRE(len >= 64 && len <= IP_MAXPACKET);
+
+	p = calloc(1, len);
+	REQUIRE(p != NULL);
+
+	p->ip_v = IPVERSION;
+	p->ip_hl = sizeof(*p)/4;
+	p->ip_len = htons(len);
+	p->ip_ttl = IPDEFTTL;
+	p->ip_p = protocol;
+	REQUIRE(p->ip_hl == 5);
+
+	return (p);
+}
+
+struct udphdr *
+set_udp(struct ip *p, u_short sport, u_short dport) {
+	int hlen = p->ip_hl << 2;
+	struct udphdr *u = (struct udphdr *)((uintptr_t)p + hlen);
+	int payload = ntohs(p->ip_len) - hlen;
+
+	REQUIRE(payload >= (int)sizeof(*u));
+	p->ip_p = IPPROTO_UDP;
+	u->uh_sport = htons(sport);
+	u->uh_dport = htons(dport);
+	u->uh_ulen = htons(payload);
+	return (u);
+}