1/*
2 * Copyright (C) 2014 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package android.net.nsd;
18
19import static org.junit.Assert.assertEquals;
20import static org.junit.Assert.assertFalse;
21import static org.junit.Assert.assertTrue;
22import static org.junit.Assert.fail;
23
24import android.os.Bundle;
25import android.os.Parcel;
26import android.os.StrictMode;
27import android.net.nsd.NsdServiceInfo;
28import android.support.test.filters.SmallTest;
29import android.support.test.runner.AndroidJUnit4;
30import android.util.Log;
31
32import java.util.Arrays;
33import java.util.HashMap;
34import java.util.Map;
35import java.net.InetAddress;
36import java.net.UnknownHostException;
37
38import org.junit.Test;
39import org.junit.runner.RunWith;
40
41@RunWith(AndroidJUnit4.class)
42@SmallTest
43public class NsdServiceInfoTest {
44
45    public final static InetAddress LOCALHOST;
46    static {
47        // Because test.
48        StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
49        StrictMode.setThreadPolicy(policy);
50
51        InetAddress _host = null;
52        try {
53            _host = InetAddress.getLocalHost();
54        } catch (UnknownHostException e) { }
55        LOCALHOST = _host;
56    }
57
58    @Test
59    public void testLimits() throws Exception {
60        NsdServiceInfo info = new NsdServiceInfo();
61
62        // Non-ASCII keys.
63        boolean exceptionThrown = false;
64        try {
65            info.setAttribute("猫", "meow");
66        } catch (IllegalArgumentException e) {
67            exceptionThrown = true;
68        }
69        assertTrue(exceptionThrown);
70        assertEmptyServiceInfo(info);
71
72        // ASCII keys with '=' character.
73        exceptionThrown = false;
74        try {
75            info.setAttribute("kitten=", "meow");
76        } catch (IllegalArgumentException e) {
77            exceptionThrown = true;
78        }
79        assertTrue(exceptionThrown);
80        assertEmptyServiceInfo(info);
81
82        // Single key + value length too long.
83        exceptionThrown = false;
84        try {
85            String longValue = "loooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo" +
86                    "oooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo" +
87                    "oooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo" +
88                    "ooooooooooooooooooooooooooooong";  // 248 characters.
89            info.setAttribute("longcat", longValue);  // Key + value == 255 characters.
90        } catch (IllegalArgumentException e) {
91            exceptionThrown = true;
92        }
93        assertTrue(exceptionThrown);
94        assertEmptyServiceInfo(info);
95
96        // Total TXT record length too long.
97        exceptionThrown = false;
98        int recordsAdded = 0;
99        try {
100            for (int i = 100; i < 300; ++i) {
101                // 6 char key + 5 char value + 2 bytes overhead = 13 byte record length.
102                String key = String.format("key%d", i);
103                info.setAttribute(key, "12345");
104                recordsAdded++;
105            }
106        } catch (IllegalArgumentException e) {
107            exceptionThrown = true;
108        }
109        assertTrue(exceptionThrown);
110        assertTrue(100 == recordsAdded);
111        assertTrue(info.getTxtRecord().length == 1300);
112    }
113
114    @Test
115    public void testParcel() throws Exception {
116        NsdServiceInfo emptyInfo = new NsdServiceInfo();
117        checkParcelable(emptyInfo);
118
119        NsdServiceInfo fullInfo = new NsdServiceInfo();
120        fullInfo.setServiceName("kitten");
121        fullInfo.setServiceType("_kitten._tcp");
122        fullInfo.setPort(4242);
123        fullInfo.setHost(LOCALHOST);
124        checkParcelable(fullInfo);
125
126        NsdServiceInfo noHostInfo = new NsdServiceInfo();
127        noHostInfo.setServiceName("kitten");
128        noHostInfo.setServiceType("_kitten._tcp");
129        noHostInfo.setPort(4242);
130        checkParcelable(noHostInfo);
131
132        NsdServiceInfo attributedInfo = new NsdServiceInfo();
133        attributedInfo.setServiceName("kitten");
134        attributedInfo.setServiceType("_kitten._tcp");
135        attributedInfo.setPort(4242);
136        attributedInfo.setHost(LOCALHOST);
137        attributedInfo.setAttribute("color", "pink");
138        attributedInfo.setAttribute("sound", (new String("にゃあ")).getBytes("UTF-8"));
139        attributedInfo.setAttribute("adorable", (String) null);
140        attributedInfo.setAttribute("sticky", "yes");
141        attributedInfo.setAttribute("siblings", new byte[] {});
142        attributedInfo.setAttribute("edge cases", new byte[] {0, -1, 127, -128});
143        attributedInfo.removeAttribute("sticky");
144        checkParcelable(attributedInfo);
145
146        // Sanity check that we actually wrote attributes to attributedInfo.
147        assertTrue(attributedInfo.getAttributes().keySet().contains("adorable"));
148        String sound = new String(attributedInfo.getAttributes().get("sound"), "UTF-8");
149        assertTrue(sound.equals("にゃあ"));
150        byte[] edgeCases = attributedInfo.getAttributes().get("edge cases");
151        assertTrue(Arrays.equals(edgeCases, new byte[] {0, -1, 127, -128}));
152        assertFalse(attributedInfo.getAttributes().keySet().contains("sticky"));
153    }
154
155    public void checkParcelable(NsdServiceInfo original) {
156        // Write to parcel.
157        Parcel p = Parcel.obtain();
158        Bundle writer = new Bundle();
159        writer.putParcelable("test_info", original);
160        writer.writeToParcel(p, 0);
161
162        // Extract from parcel.
163        p.setDataPosition(0);
164        Bundle reader = p.readBundle();
165        reader.setClassLoader(NsdServiceInfo.class.getClassLoader());
166        NsdServiceInfo result = reader.getParcelable("test_info");
167
168        // Assert equality of base fields.
169        assertEquals(original.getServiceName(), result.getServiceName());
170        assertEquals(original.getServiceType(), result.getServiceType());
171        assertEquals(original.getHost(), result.getHost());
172        assertTrue(original.getPort() == result.getPort());
173
174        // Assert equality of attribute map.
175        Map<String, byte[]> originalMap = original.getAttributes();
176        Map<String, byte[]> resultMap = result.getAttributes();
177        assertEquals(originalMap.keySet(), resultMap.keySet());
178        for (String key : originalMap.keySet()) {
179            assertTrue(Arrays.equals(originalMap.get(key), resultMap.get(key)));
180        }
181    }
182
183    public void assertEmptyServiceInfo(NsdServiceInfo shouldBeEmpty) {
184        byte[] txtRecord = shouldBeEmpty.getTxtRecord();
185        if (txtRecord == null || txtRecord.length == 0) {
186            return;
187        }
188        fail("NsdServiceInfo.getTxtRecord did not return null but " + Arrays.toString(txtRecord));
189    }
190}
191