libadblockplus-android/src/org/adblockplus/android/AndroidWebRequest.java - Issue 29351744: Issue 4399 - Add WebView inheritor with ad blocking

Delta Between Two Patch Sets: libadblockplus-android/src/org/adblockplus/android/AndroidWebRequest.java

Issue 29351744: Issue 4399 - Add WebView inheritor with ad blocking (Closed)

Left Patch Set: minor codestyle fixes Created Oct. 20, 2016, 1:16 p.m.

Right Patch Set: changed packages, now using AdblockEngine (original ABPEngine), improved demo app Created Oct. 25, 2016, 11:20 a.m.

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1 /*

2 * This file is part of Adblock Plus <https://adblockplus.org/>,

3 * Copyright (C) 2006-2016 Eyeo GmbH

4 *

5 * Adblock Plus is free software: you can redistribute it and/or modify

6 * it under the terms of the GNU General Public License version 3 as

7 * published by the Free Software Foundation.

8 *

9 * Adblock Plus is distributed in the hope that it will be useful,

10 * but WITHOUT ANY WARRANTY; without even the implied warranty of

11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

12 * GNU General Public License for more details.

13 *

14 * You should have received a copy of the GNU General Public License

15 * along with Adblock Plus. If not, see <http://www.gnu.org/licenses/>.

16 */

17

18 package org.adblockplus.android;

19

20 import java.io.BufferedReader;

21 import java.io.InputStreamReader;

22 import java.net.HttpURLConnection;

23 import java.net.URL;

24 import java.util.HashSet;

25 import java.util.List;

26

27 import org.adblockplus.libadblockplus.AdblockPlusException;

28 import org.adblockplus.libadblockplus.FilterEngine;

29 import org.adblockplus.libadblockplus.HeaderEntry;

30 import org.adblockplus.libadblockplus.ServerResponse;

31 import org.adblockplus.libadblockplus.ServerResponse.NsStatus;

32 import org.adblockplus.libadblockplus.WebRequest;

33

34 import android.util.Log;

35

36 public class AndroidWebRequest extends WebRequest

37 {

38 public final static String TAG = Utils.getTag(WebRequest.class);

39

40 private final HashSet<String> subscriptionURLs = new HashSet<String>();

41 private final boolean elemhideEnabled;

42

43 public AndroidWebRequest(boolean enableElemhide)

44 {

45 this.elemhideEnabled = enableElemhide;

46 }

47

48 public AndroidWebRequest()

49 {

50 this(false);

51 }

52

53 private boolean isListedSubscriptionUrl(final URL url)

54 {

55 String toCheck = url.toString();

56

57 final int idx = toCheck.indexOf('?');

58 if (idx != -1)

59 {

60 toCheck = toCheck.substring(0, idx);

61 }

62

63 return this.subscriptionURLs.contains(toCheck);

64 }

65

66 protected void updateSubscriptionURLs(final FilterEngine engine)

67 {

68 for (final org.adblockplus.libadblockplus.Subscription s : engine.fetchAvail ableSubscriptions())

69 {

70 this.subscriptionURLs.add(s.getProperty("url").toString());

71 }

72 this.subscriptionURLs.add(engine.getPref("subscriptions_exceptionsurl").toSt ring());

73 }

74

75 @Override

76 public ServerResponse httpGET(final String urlStr, final List<HeaderEntry> hea ders)

77 {

78 try

79 {

80 final URL url = new URL(urlStr);

81 Log.d(TAG, "Downloading from: " + url);

82

83 final HttpURLConnection connection = (HttpURLConnection) url.openConnectio n();

84 connection.setRequestMethod("GET");

85 connection.connect();

86

87 final ServerResponse response = new ServerResponse();

88 response.setResponseStatus(connection.getResponseCode());

89

90 if (response.getResponseStatus() == 200)

91 {

92 final BufferedReader reader = new BufferedReader(new InputStreamReader(c onnection.getInputStream(), "UTF-8"));

93 final StringBuilder sb = new StringBuilder();

94

95 String line;

96 while ((line = reader.readLine()) != null)

97 {

98 // We're only appending non-element-hiding filters here.

99 //

100 // See:

101 // https://issues.adblockplus.org/ticket/303

102 //

103 // Follow-up issue for removing this hack:

104 // https://issues.adblockplus.org/ticket/1541

105 //

106 if (this.elemhideEnabled \|\| !isListedSubscriptionUrl(url) \|\| line.inde xOf('#') == -1)

107 {

108 sb.append(line);

109 sb.append('\n');

110 }

111 }

112

113 connection.disconnect();

114

115 response.setStatus(NsStatus.OK);

116 response.setResponse(sb.toString());

117 }

118 else

119 {

120 response.setStatus(NsStatus.ERROR_FAILURE);

121 }

122 Log.d(TAG, "Downloading finished");

123 return response;

124 }

125 catch (final Throwable t)

126 {

127 Log.e(TAG, "WebRequest failed", t);

128 throw new AdblockPlusException("WebRequest failed", t);

129 }

130 }

131 }

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