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Unified Diff: src/org/adblockplus/android/ProxySettings.java

Issue 8484110: ABP/Android proxy service (Closed)
Patch Set: ABP/Android proxy service Created Nov. 1, 2012, 9:46 a.m.
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Index: src/org/adblockplus/android/ProxySettings.java
===================================================================
new file mode 100644
--- /dev/null
+++ b/src/org/adblockplus/android/ProxySettings.java
@@ -0,0 +1,194 @@
+package org.adblockplus.android;
+
+import java.lang.reflect.Constructor;
+import java.lang.reflect.Method;
+
+import android.content.Context;
+import android.content.Intent;
+import android.net.ConnectivityManager;
+import android.net.NetworkInfo;
+import android.os.Parcelable;
+import android.util.Log;
+
+public class ProxySettings
+{
+ private static final String TAG = "ProxySettings";
+
+ /**
+ * Reads system proxy settings on Android 3.1+ using Java reflection.
+ *
+ * @return string array of host, port and exclusion list
+ */
+ public static String[] getUserProxy(Context context)
+ {
+ Method method = null;
+ try
+ {
+ /*
+ * ProxyProperties proxyProperties = ConnectivityManager.getProxy();
+ */
+ method = ConnectivityManager.class.getMethod("getProxy");
+ }
+ catch (NoSuchMethodException e)
+ {
+ // This is normal situation for pre-ICS devices
+ return null;
+ }
+ catch (Exception e)
+ {
+ // This should not happen
+ Log.e(TAG, "getProxy failure", e);
+ return null;
+ }
+
+ try
+ {
+ ConnectivityManager connectivityManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
+ Object pp = method.invoke(connectivityManager);
+ if (pp == null)
+ return null;
+
+ return getUserProxy(pp);
+ }
+ catch (Exception e)
+ {
+ // This should not happen
+ Log.e(TAG, "getProxy failure", e);
+ return null;
+ }
+ }
+
+ /**
+ * Reads system proxy settings on Android 3.1+ using Java reflection.
+ *
+ * @param pp
+ * ProxyProperties object
+ * @return string array of host, port and exclusion list
+ * @throws Exception
+ */
+ protected static String[] getUserProxy(Object pp) throws Exception
+ {
+ String[] userProxy = new String[3];
+
+ String className = "android.net.ProxyProperties";
+ Class<?> c = Class.forName(className);
+ Method method;
+
+ /*
+ * String proxyHost = pp.getHost()
+ */
+ method = c.getMethod("getHost");
+ userProxy[0] = (String) method.invoke(pp);
+
+ /*
+ * int proxyPort = pp.getPort();
+ */
+ method = c.getMethod("getPort");
+ userProxy[1] = String.valueOf((Integer) method.invoke(pp));
+
+ /*
+ * String proxyEL = pp.getExclusionList()
+ */
+ method = c.getMethod("getExclusionList");
+ userProxy[2] = (String) method.invoke(pp);
+
+ if (userProxy[0] != null)
+ return userProxy;
+ else
+ return null;
+ }
+
+ /**
+ * Tries to set local proxy in system settings via native call on Android 3.1+
+ * devices using Java reflection.
+ *
+ * @return true if device supports native proxy setting
+ */
+ public static boolean setConnectionProxy(Context context, String host, int port, String excl)
+ {
+ Method method = null;
+ try
+ {
+ /*
+ * android.net.LinkProperties lp =
+ * ConnectivityManager.getActiveLinkProperties();
+ */
+ method = ConnectivityManager.class.getMethod("getActiveLinkProperties");
+ }
+ catch (NoSuchMethodException e)
+ {
+ // This is normal situation for pre-ICS devices
+ return false;
+ }
+ catch (Exception e)
+ {
+ // This should not happen
+ Log.e(TAG, "setHttpProxy failure", e);
+ return false;
+ }
+ try
+ {
+ ConnectivityManager connectivityManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
+ Object lp = method.invoke(connectivityManager);
+ if (lp == null) // There is no active link now, but device has native proxy support
+ return true;
+
+ String className = "android.net.ProxyProperties";
+ Class<?> c = Class.forName(className);
+ method = lp.getClass().getMethod("setHttpProxy", c);
+ if (host != null)
+ {
+ /*
+ * ProxyProperties pp = new ProxyProperties(host, port, excl);
+ */
+ Class<?>[] parameter = new Class[] {String.class, int.class, String.class};
+ Object args[] = new Object[3];
+ args[0] = host;
+ args[1] = Integer.valueOf(port);
+ args[2] = excl;
+ Constructor<?> cons = c.getConstructor(parameter);
+ Object pp = cons.newInstance(args);
+ /*
+ * lp.setHttpProxy(pp);
+ */
+ method.invoke(lp, pp);
+ }
+ else
+ {
+ /*
+ * lp.setHttpProxy(null);
+ */
+ method.invoke(lp, new Object[] {null});
+ }
+
+ Intent intent = null;
+ NetworkInfo ni = connectivityManager.getActiveNetworkInfo();
+ switch (ni.getType())
+ {
+ case ConnectivityManager.TYPE_WIFI:
+ intent = new Intent("android.net.wifi.LINK_CONFIGURATION_CHANGED");
+ break;
+ case ConnectivityManager.TYPE_MOBILE:
+ // TODO We leave it here for future, it does not work now
+ // intent = new Intent("android.intent.action.ANY_DATA_STATE");
+ break;
+ }
+ if (intent != null)
+ {
+ if (lp != null)
+ {
+ intent.putExtra("linkProperties", (Parcelable) lp);
+ }
+ context.sendBroadcast(intent);
+ }
+
+ return true;
+ }
+ catch (Exception e)
+ {
+ // This should not happen
+ Log.e(TAG, "setHttpProxy failure", e);
+ return false;
+ }
+ }
+}

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