Add Dns CTS test.

Checks java and native calls.
Adds some performance tests, but need to look at how that should be used.

Change-Id: I158164829da13302d9532275cef3482c4736168e
diff --git a/tests/cts/net/jni/NativeDnsJni.c b/tests/cts/net/jni/NativeDnsJni.c
new file mode 100644
index 0000000..de9bb67
--- /dev/null
+++ b/tests/cts/net/jni/NativeDnsJni.c
@@ -0,0 +1,166 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <arpa/inet.h>
+#include <jni.h>
+#include <netdb.h>
+#include <stdio.h>
+#include <utils/Log.h>
+
+JNIEXPORT jboolean Java_android_net_cts_DnsTest_testNativeDns(JNIEnv* env, jclass class)
+{
+    const char *node = "www.google.com";
+    char *service = NULL;
+    struct addrinfo *answer;
+
+    int res = getaddrinfo(node, service, NULL, &answer);
+    ALOGD("getaddrinfo(www.google.com) gave res=%d (%s)", res, gai_strerror(res));
+    if (res != 0) return JNI_FALSE;
+
+    // check for v4 & v6
+    {
+        int foundv4 = 0;
+        int foundv6 = 0;
+        struct addrinfo *current = answer;
+        while (current != NULL) {
+            char buf[256];
+            if (current->ai_addr->sa_family == AF_INET) {
+                inet_ntop(current->ai_family, &((struct sockaddr_in *)current->ai_addr)->sin_addr,
+                        buf, sizeof(buf));
+                foundv4 = 1;
+                ALOGD("  %s", buf);
+            } else if (current->ai_addr->sa_family == AF_INET6) {
+                inet_ntop(current->ai_family, &((struct sockaddr_in6 *)current->ai_addr)->sin6_addr,
+                        buf, sizeof(buf));
+                foundv6 = 1;
+                ALOGD("  %s", buf);
+            }
+            current = current->ai_next;
+        }
+
+        freeaddrinfo(answer);
+        answer = NULL;
+        if (foundv4 != 1 || foundv6 != 1) {
+            ALOGD("getaddrinfo(www.google.com) didn't find both v4 and v6");
+            return JNI_FALSE;
+        }
+    }
+
+    node = "ipv6.google.com";
+    res = getaddrinfo(node, service, NULL, &answer);
+    ALOGD("getaddrinfo(ipv6.google.com) gave res=%d", res);
+    if (res != 0) return JNI_FALSE;
+
+    {
+        int foundv4 = 0;
+        int foundv6 = 0;
+        struct addrinfo *current = answer;
+        while (current != NULL) {
+            char buf[256];
+            if (current->ai_addr->sa_family == AF_INET) {
+                inet_ntop(current->ai_family, &((struct sockaddr_in *)current->ai_addr)->sin_addr,
+                        buf, sizeof(buf));
+                ALOGD("  %s", buf);
+                foundv4 = 1;
+            } else if (current->ai_addr->sa_family == AF_INET6) {
+                inet_ntop(current->ai_family, &((struct sockaddr_in6 *)current->ai_addr)->sin6_addr,
+                        buf, sizeof(buf));
+                ALOGD("  %s", buf);
+                foundv6 = 1;
+            }
+            current = current->ai_next;
+        }
+
+        freeaddrinfo(answer);
+        answer = NULL;
+        if (foundv4 == 1 || foundv6 != 1) {
+            ALOGD("getaddrinfo(ipv6.google.com) didn't find only v6");
+            return JNI_FALSE;
+        }
+    }
+
+    // getnameinfo
+    struct sockaddr_in sa4;
+    sa4.sin_family = AF_INET;
+    sa4.sin_port = 0;
+    inet_pton(AF_INET, "173.252.110.27", &(sa4.sin_addr));
+
+    struct sockaddr_in6 sa6;
+    sa6.sin6_family = AF_INET6;
+    sa6.sin6_port = 0;
+    sa6.sin6_flowinfo = 0;
+    sa6.sin6_scope_id = 0;
+    inet_pton(AF_INET6, "2001:4860:4001:802::1008", &(sa6.sin6_addr));
+
+    char buf[NI_MAXHOST];
+    int flags = NI_NAMEREQD;
+
+    res = getnameinfo((const struct sockaddr*)&sa4, sizeof(sa4), buf, sizeof(buf), NULL, 0, flags);
+    if (res != 0) {
+        ALOGD("getnameinfo(173.252.110.27 (facebook) ) gave error %d (%s)", res, gai_strerror(res));
+        return JNI_FALSE;
+    }
+    if (strstr(buf, "facebook.com") == NULL) {
+        ALOGD("getnameinfo(173.252.110.27 (facebook) ) didn't return facebook.com: %s", buf);
+        return JNI_FALSE;
+    }
+
+    memset(buf, sizeof(buf), 0);
+    res = getnameinfo((const struct sockaddr*)&sa6, sizeof(sa6), buf, sizeof(buf),
+            NULL, 0, flags);
+    if (res != 0) {
+        ALOGD("getnameinfo(2a03:2880:2110:df01:face:b00c::8 (facebook) ) gave error %d (%s)",
+                res, gai_strerror(res));
+        return JNI_FALSE;
+    }
+    if (strstr(buf, "1e100.net") == NULL) {
+        ALOGD("getnameinfo(2a03:2880:2110:df01:face:b00c::8) didn't return facebook.com: %s", buf);
+        return JNI_FALSE;
+    }
+
+    // gethostbyname
+    struct hostent *my_hostent = gethostbyname("www.mit.edu");
+    if (my_hostent == NULL) {
+        ALOGD("gethostbyname(www.mit.edu) gave null response");
+        return JNI_FALSE;
+    }
+    if ((my_hostent->h_addr_list == NULL) || (*my_hostent->h_addr_list == NULL)) {
+        ALOGD("gethostbyname(www.mit.edu) gave 0 addresses");
+        return JNI_FALSE;
+    }
+    {
+        char **current = my_hostent->h_addr_list;
+        while (*current != NULL) {
+            char buf[256];
+            inet_ntop(my_hostent->h_addrtype, *current, buf, sizeof(buf));
+            ALOGD("gethostbyname(www.mit.edu) gave %s", buf);
+            current++;
+        }
+    }
+
+    // gethostbyaddr
+    char addr6[16];
+    inet_pton(AF_INET6, "2001:4b10:bbc::2", addr6);
+    my_hostent = gethostbyaddr(addr6, sizeof(addr6), AF_INET6);
+    if (my_hostent == NULL) {
+        ALOGD("gethostbyaddr(2001:4b10:bbc::2 (bbc) ) gave null response");
+        return JNI_FALSE;
+    }
+    ALOGD("gethostbyaddr(2001:4b10:bbc::2 (bbc) ) gave %s for name",
+    my_hostent->h_name ? my_hostent->h_name : "null");
+    if (my_hostent->h_name == NULL) return JNI_FALSE;
+    return JNI_TRUE;
+}