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Index: tests/sys/netinet/libalias/2_natout.c
===================================================================
--- /dev/null
+++ tests/sys/netinet/libalias/2_natout.c
@@ -0,0 +1,100 @@
+#include <atf-c.h>
+#include <alias.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include <arpa/inet.h>
+#include <netinet/ip.h>
+
+static struct ip *
+ip_packet(struct in_addr src, struct in_addr dst, u_char protocol, size_t len) {
+ struct ip * p;
+
+ ATF_REQUIRE(len >= 64 && len <= IP_MAXPACKET);
+
+ p = malloc(len);
+ ATF_REQUIRE(p != NULL);
+
+ p->ip_v = IPVERSION;
+ p->ip_hl = sizeof(*p)/4;
+ p->ip_len = htons(len);
+ p->ip_ttl = IPDEFTTL;
+ p->ip_src = src;
+ p->ip_dst = dst;
+ p->ip_p = protocol;
+ ATF_REQUIRE(p->ip_hl == 5);
+
+ return (p);
+}
+
+static inline bool
+addr_eq(struct in_addr a, struct in_addr b) {
+ return a.s_addr == b.s_addr;
+}
+
+#define a2h(a) ntohl(a.s_addr)
+
+#define NAT_CHECK(pip, src, dst) do { \
+ int res; \
+ res = LibAliasOut(la, pip, 64); \
+ ATF_CHECK(res == PKT_ALIAS_OK); \
+ ATF_CHECK(addr_eq(src, pip->ip_src)); \
+ ATF_CHECK(addr_eq(dst, pip->ip_dst)); \
+} while(0)
+
+ATF_TC_WITHOUT_HEAD(1_simplemasq);
+ATF_TC_BODY(1_simplemasq, dummy)
+{
+ struct libalias *la = LibAliasInit(NULL);
+ struct in_addr masq = { htonl(0x01020304) };
+ struct in_addr src = { htonl(0x0a010203) };
+ struct in_addr dst = { htonl(0x12345678) };
+ struct ip *pip;
+
+ ATF_REQUIRE(la != NULL);
+ LibAliasSetAddress(la, masq);
+
+ pip = ip_packet(src, dst, 254, 64);
+ NAT_CHECK(pip, masq, dst);
+ free(pip);
+
+ LibAliasUninit(la);
+}
+
+ATF_TC_WITHOUT_HEAD(2_unregistered);
+ATF_TC_BODY(2_unregistered, dummy)
+{
+ struct libalias *la = LibAliasInit(NULL);
+ struct in_addr masq = { htonl(0x01020304) };
+ struct in_addr src1 = { htonl(0x0a010203) };
+ struct in_addr src2 = { htonl(0xa0102030) };
+ struct in_addr dst = { htonl(0x12345678) };
+ struct ip *pip;
+
+ ATF_REQUIRE(la != NULL);
+ LibAliasSetAddress(la, masq);
+ LibAliasSetMode(la, PKT_ALIAS_UNREGISTERED_ONLY, ~0);
+
+ pip = ip_packet(src1, dst, 254, 64);
+ NAT_CHECK(pip, masq, dst);
+
+ pip->ip_src = src2;
+ NAT_CHECK(pip, src2, dst);
+
+ LibAliasSetMode(la, 0, PKT_ALIAS_UNREGISTERED_ONLY);
+ NAT_CHECK(pip, masq, dst);
+
+ free(pip);
+ LibAliasUninit(la);
+}
+
+ATF_TP_ADD_TCS(natout)
+{
+ /* Use "dd if=/dev/random bs=2 count=1 | od -x" to reproduce */
+ srand(0x0b61);
+
+ ATF_TP_ADD_TC(natout, 1_simplemasq);
+ ATF_TP_ADD_TC(natout, 2_unregistered);
+
+ return atf_no_error();
+}
Index: tests/sys/netinet/libalias/Makefile
===================================================================
--- tests/sys/netinet/libalias/Makefile
+++ tests/sys/netinet/libalias/Makefile
@@ -7,7 +7,8 @@
TESTSDIR= ${TESTSBASE}/sys/netinet/libalias
BINDIR= ${TESTSDIR}
-ATF_TESTS_C+= 1_instance
+ATF_TESTS_C+= 1_instance \
+ 2_natout \
LIBADD+= alias

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