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Apply fix for sdcard access for KK/LP #4

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Apply fix for sdcard access for KK/LP #4

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75 changes: 74 additions & 1 deletion src/com/egingell/downloads2sd/XHook.java
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Original file line number Diff line number Diff line change
Expand Up @@ -13,6 +13,8 @@
import java.util.ArrayList;
import java.util.regex.Pattern;

import org.xmlpull.v1.XmlPullParser;

import android.content.ContentValues;
import android.net.Uri;
import android.os.Environment;
Expand All @@ -31,6 +33,8 @@ public class XHook implements IXposedHookLoadPackage, IXposedHookZygoteInit {
final static File sDir = new File(Environment.getDataDirectory(), "data/com.egingell.downloads2sd/shared_prefs/prefs.xml");
final static XSharedPreferences xprefs = new XSharedPreferences(sDir);
String hint;
public XC_MethodHook externalSdCardAccessHook;

public XHook() throws Throwable {
xprefs.makeWorldReadable();
Interplanetary.init(this.getClass().getName());
Expand All @@ -44,9 +48,61 @@ public XHook() throws Throwable {
@Override
public void initZygote(StartupParam startupParam) throws Throwable {
PATH = startupParam.modulePath;

externalSdCardAccessHook = new XC_MethodHook() {
@Override
protected void afterHookedMethod(MethodHookParam param)
throws Throwable {
prefs.reload();
String permission = (String) param.args[1];
if (permission
.equals("android.permission.WRITE_EXTERNAL_STORAGE")
|| permission
.equals("android.permission.ACCESS_ALL_EXTERNAL_STORAGE")) {
Class<?> process = XposedHelpers.findClass(
"android.os.Process", null);
int gid = (Integer) XposedHelpers.callStaticMethod(process,
"getGidForName", "media_rw");
Object permissions = null;
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
permissions = XposedHelpers.getObjectField(
param.thisObject, "mPermissions");
} else if (Build.VERSION.SDK_INT == Build.VERSION_CODES.KITKAT) {
Object settings = XposedHelpers.getObjectField(
param.thisObject, "mSettings");
permissions = XposedHelpers.getObjectField(settings,
"mPermissions");
}
Object bp = XposedHelpers.callMethod(permissions, "get",
permission);
int[] bpGids = (int[]) XposedHelpers.getObjectField(bp,
"gids");
XposedHelpers.setObjectField(bp, "gids",
appendInt(bpGids, gid));
}
}
};
}
@Override
public void handleLoadPackage(LoadPackageParam lpparam) throws Throwable {
if ("android".equals(lpparam.packageName)
&& "android".equals(lpparam.processName)) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
XposedHelpers.findAndHookMethod(
XposedHelpers.findClass(
"com.android.server.SystemConfig",
lpparam.classLoader), "readPermission",
XmlPullParser.class, String.class,
externalSdCardAccessHook);
} else if (Build.VERSION.SDK_INT == Build.VERSION_CODES.KITKAT) {
XposedHelpers.findAndHookMethod(XposedHelpers.findClass(
"com.android.server.pm.PackageManagerService",
lpparam.classLoader), "readPermission",
XmlPullParser.class, String.class,
externalSdCardAccessHook);
}
}

try {
Class<?> clazz = Environment.class;
try {
Expand Down Expand Up @@ -197,4 +253,21 @@ public File[] findExtSdCards() {
}
return files;
}
}


public int[] appendInt(int[] cur, int val) {
if (cur == null) {
return new int[] { val };
}
final int N = cur.length;
for (int i = 0; i < N; i++) {
if (cur[i] == val) {
return cur;
}
}
int[] ret = new int[N + 1];
System.arraycopy(cur, 0, ret, 0, N);
ret[N] = val;
return ret;
}
}