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Added prop hiding

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snake-4
2024-05-03 02:30:58 +02:00
parent b6603b12c2
commit 3a72258df4
6 changed files with 69 additions and 5 deletions
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60
module/jni/modules.cpp
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@@ -1,10 +1,18 @@
#include <string>
#include <string_view>
#include <set>
#include <atomic>
#include <unordered_map>
#include <cstdint>
#include <sys/mount.h>
#include <elfio/elfio.hpp>
// These includes are from the system_properties submodule, not NDK!
#define _REALLY_INCLUDE_SYS__SYSTEM_PROPERTIES_H_
#include <api/system_properties.h>
#include <api/_system_properties.h>
#include <system_properties/prop_info.h>
#include "zygisk.hpp"
#include "logging.hpp"
#include "map_parser.hpp"
@@ -45,7 +53,7 @@ static bool shouldUnmount(const mountinfo_entry_t &mount, const mountinfo_root_r
if (type == "overlay")
{
const auto &options = mount.getSuperOptions();
if (options.contains("lowerdir") && options.at("lowerdir").starts_with("/data/adb"))
return true;
@@ -159,3 +167,53 @@ void doHideZygisk()
LOGD("libnativebridge.so had_error was reset.");
}
}
void doMrProp()
{
static bool isInitialized = false;
static int resetCount = 0;
if (!isInitialized)
{
isInitialized = __system_properties_init() == 0;
}
if (!isInitialized)
{
LOGE("Could not initialize system_properties!");
return;
}
int ret = __system_property_foreach(
[](const prop_info *pi, void *)
{
if (std::string_view(pi->name).starts_with("ro.") && !pi->is_long())
{
auto serial = std::atomic_load_explicit(&pi->serial, std::memory_order_relaxed);
// Well this is a bit dangerous
bool shouldReset = (serial & 0xFF) != 0;
auto length = strlen(pi->value);
if (!shouldReset)
{
for (size_t i = length; i < PROP_VALUE_MAX; i++)
{
if (pi->value[i] != 0)
{
shouldReset = true;
break;
}
}
}
if (shouldReset)
{
resetCount++;
__system_property_update(const_cast<prop_info *>(pi), pi->value, length);
}
}
},
nullptr);
LOGD("__system_property_foreach returned %d. resetCount=%d", ret, resetCount);
}