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Bypass DexFile's security check for RootService (#5911)

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Old Android (pre 8.0) enforces `optimizedDirectory` to have the same uid with the process. If repackaged, root service (uid=0) will crash when trying to load current.apk. So we set `optimizedDirectory` to null to bypass the check.
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残页 2022-06-04 19:21:57 +08:00 committed by GitHub
parent 351e094440
commit a3381da7ed
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1 changed files with 5 additions and 4 deletions
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app/shared/src/main/java/com/topjohnwu/magisk/utils/DynamicClassLoader.java
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@ -5,18 +5,19 @@ import java.io.IOException;
import java.net.URL;
import java.util.Enumeration;
import dalvik.system.DexClassLoader;
import dalvik.system.BaseDexClassLoader;
public class DynamicClassLoader extends DexClassLoader {
public class DynamicClassLoader extends BaseDexClassLoader {
private static final ClassLoader base = Object.class.getClassLoader();
public DynamicClassLoader(File apk) {
super(apk.getPath(), apk.getParent(), null, base);
this(apk, base);
}
public DynamicClassLoader(File apk, ClassLoader parent) {
super(apk.getPath(), apk.getParent(), null, parent);
// Set optimizedDirectory to null to bypass DexFile's security checks
super(apk.getPath(), null, null, parent);
}
@Override