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Code Issues Packages Projects Releases 1 Wiki Activity

Future proof to allow spoofing all fields

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- very verbose logging (for now)
- combine setProp and setVersionProp into a single universal function
- iterate through all entries to allow modifying any matching android.os.Build or android.os.Build.VERSION field
- add BUILD_ID and VNDK_VERSION support to keep cross-fork API compatibility
- add exceptions for FIRST_API_VERSION (actually DEVICE_INITIAL_SDK_INT) and BUILD_ID (actually ID) for backwards API compatibility
This commit is contained in:
osm0sis
2023-12-11 14:34:29 -04:00
parent 093cf04232
commit ecfa0bbbdf
2 changed files with 125 additions and 42 deletions
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app/src/main/java/es/chiteroman/playintegrityfix/EntryPoint.java
+56 -34
View File
@@ -32,6 +32,7 @@ public final class EntryPoint {
reader.endObject();
} catch (IOException e) {
LOG("Couldn't read JSON from Zygisk: " + e);
return;
}
}
@@ -63,49 +64,70 @@ public final class EntryPoint {
}
static void spoofDevice() {
if (map.isEmpty()) return;
for (String key : map.keySet()) {
// Backwards compatibility for chiteroman's alternate API naming
if (key.equals("BUILD_ID")) {
setProp("ID", map.get("BUILD_ID"));
} else if (key.equals("FIRST_API_LEVEL")) {
setProp("DEVICE_INITIAL_SDK_INT", map.get("FIRST_API_LEVEL"));
} else {
setProp(key, map.get(key));
}
}
}
setProp("PRODUCT", map.get("PRODUCT"));
setProp("DEVICE", map.get("DEVICE"));
setProp("MANUFACTURER", map.get("MANUFACTURER"));
setProp("BRAND", map.get("BRAND"));
setProp("MODEL", map.get("MODEL"));
setProp("FINGERPRINT", map.get("FINGERPRINT"));
setVersionProp("SECURITY_PATCH", map.get("SECURITY_PATCH"));
private static boolean classContainsField(Class className, String fieldName) {
for (Field field : className.getDeclaredFields()) {
if (field.getName().equals(fieldName)) return true;
}
return false;
}
private static void setProp(String name, String value) {
if (name == null || value == null || name.isEmpty() || value.isEmpty()) return;
try {
Field field = Build.class.getDeclaredField(name);
field.setAccessible(true);
String oldValue = (String) field.get(null);
field.set(null, value);
field.setAccessible(false);
if (value.equals(oldValue)) return;
LOG(String.format("[%s]: %s -> %s", name, oldValue, value));
} catch (NoSuchFieldException e) {
LOG(String.format("Couldn't find '%s' field name.", name));
} catch (IllegalAccessException e) {
LOG(String.format("Couldn't modify '%s' field value.", name));
if (value == null || value.isEmpty()) {
LOG(String.format("%s is null, skipping...", name));
return;
}
}
private static void setVersionProp(String name, String value) {
if (name == null || value == null || name.isEmpty() || value.isEmpty()) return;
Field field = null;
String oldValue = null;
try {
Field field = Build.VERSION.class.getDeclaredField(name);
field.setAccessible(true);
String oldValue = (String) field.get(null);
field.set(null, value);
field.setAccessible(false);
if (value.equals(oldValue)) return;
LOG(String.format("[%s]: %s -> %s", name, oldValue, value));
if (classContainsField(Build.class, name)) {
field = Build.class.getDeclaredField(name);
} else if (classContainsField(Build.VERSION.class, name)) {
field = Build.VERSION.class.getDeclaredField(name);
} else {
LOG(String.format("Couldn't determine '%s' class name", name));
return;
}
} catch (NoSuchFieldException e) {
LOG(String.format("Couldn't find '%s' field name.", name));
} catch (IllegalAccessException e) {
LOG(String.format("Couldn't modify '%s' field value.", name));
LOG(String.format("Couldn't find '%s' field name: " + e, name));
return;
}
field.setAccessible(true);
try {
oldValue = String.valueOf(field.get(null));
} catch (IllegalAccessException e) {
LOG(String.format("Couldn't access '%s' field value: " + e, name));
return;
}
if (value.equals(oldValue)) {
LOG(String.format("[%s]: already '%s', skipping...", name, value));
return;
}
try {
if (field.getType().equals(Integer.TYPE)) {
field.set(null, Integer.parseInt(value));
} else {
field.set(null, value);
}
} catch (IllegalAccessException e) {
LOG(String.format("Couldn't modify '%s' field value: " + e, name));
return;
}
field.setAccessible(false);
LOG(String.format("[%s]: %s -> %s", name, oldValue, value));
}
static void LOG(String msg) {