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/**************************************************************************
*
* Copyright 2014-2024 Valve Software
* Copyright 2015-2024 Google Inc.
* Copyright 2019-2024 LunarG, Inc.
* All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
**************************************************************************/
#include "vk_layer_config.h"
#include <cstring>
#include <string>
#include <cstdlib>
#include <sys/stat.h>
#include <vulkan/vk_layer.h>
#if defined(_WIN32)
#include <windows.h>
#include <direct.h>
#define GetCurrentDir _getcwd
#elif defined(VK_USE_PLATFORM_ANDROID_KHR)
#include "error_message/logging.h"
#include <charconv>
#include <sys/system_properties.h>
#include <unistd.h>
#include "utils/android_ndk_types.h"
#define GetCurrentDir getcwd
#else
#include <unistd.h>
#define GetCurrentDir getcwd
#endif
#if defined(__ANDROID__)
static void PropCallback(void *cookie, [[maybe_unused]] const char *name, const char *value, [[maybe_unused]] uint32_t serial) {
std::string *property = static_cast<std::string *>(cookie);
*property = value;
}
#endif
std::string GetEnvironment(const char *variable) {
#if !defined(__ANDROID__) && !defined(_WIN32)
const char *output = getenv(variable);
return output == NULL ? "" : output;
#elif defined(_WIN32)
int size = GetEnvironmentVariable(variable, NULL, 0);
if (size == 0) {
return "";
}
char *buffer = new char[size];
GetEnvironmentVariable(variable, buffer, size);
std::string output = buffer;
delete[] buffer;
return output;
#elif defined(__ANDROID__)
std::string var = variable;
if (std::string_view{variable} != kForceDefaultCallbackKey) {
// kForceDefaultCallbackKey is a special key that needs to be recognized for backwards compatibilty.
// For all other strings, prefix the requested variable with "debug.vvl." so that desktop environment settings can be used
// on Android.
var = "debug.vvl." + var;
}
const prop_info *prop_info = __system_property_find(var.data());
if (prop_info) {
std::string property;
__system_property_read_callback(prop_info, PropCallback, &property);
return property;
} else {
return "";
}
#else
return "";
#endif
}
void SetEnvironment(const char *variable, const char *value) {
#if !defined(__ANDROID__) && !defined(_WIN32)
setenv(variable, value, 1);
#elif defined(_WIN32)
SetEnvironmentVariable(variable, value);
#elif defined(__ANDROID__)
(void)variable;
(void)value;
assert(false && "Not supported on android");
#endif
}
#if defined(WIN32)
// Check for admin rights
static inline bool IsHighIntegrity() {
HANDLE process_token;
if (OpenProcessToken(GetCurrentProcess(), TOKEN_QUERY | TOKEN_QUERY_SOURCE, &process_token)) {
// Maximum possible size of SID_AND_ATTRIBUTES is maximum size of a SID + size of attributes DWORD.
uint8_t mandatory_label_buffer[SECURITY_MAX_SID_SIZE + sizeof(DWORD)];
DWORD buffer_size;
if (GetTokenInformation(process_token, TokenIntegrityLevel, mandatory_label_buffer, sizeof(mandatory_label_buffer),
&buffer_size) != 0) {
const TOKEN_MANDATORY_LABEL *mandatory_label = (const TOKEN_MANDATORY_LABEL *)mandatory_label_buffer;
const DWORD sub_authority_count = *GetSidSubAuthorityCount(mandatory_label->Label.Sid);
const DWORD integrity_level = *GetSidSubAuthority(mandatory_label->Label.Sid, sub_authority_count - 1);
CloseHandle(process_token);
return integrity_level > SECURITY_MANDATORY_MEDIUM_RID;
}
CloseHandle(process_token);
}
return false;
}
#endif
// Ensure we are properly setting VK_USE_PLATFORM_METAL_EXT, VK_USE_PLATFORM_IOS_MVK, and VK_USE_PLATFORM_MACOS_MVK.
#if __APPLE__
#ifndef VK_USE_PLATFORM_METAL_EXT
#error "VK_USE_PLATFORM_METAL_EXT not defined!"
#endif
#include <TargetConditionals.h>
#if TARGET_OS_IOS
#ifndef VK_USE_PLATFORM_IOS_MVK
#error "VK_USE_PLATFORM_IOS_MVK not defined!"
#endif
#endif // TARGET_OS_IOS
#if TARGET_OS_OSX
#ifndef VK_USE_PLATFORM_MACOS_MVK
#error "VK_USE_PLATFORM_MACOS_MVK not defined!"
#endif
#endif // TARGET_OS_OSX
#endif // __APPLE__
#ifdef VK_USE_PLATFORM_ANDROID_KHR
// Require at least NDK 25 to build Validation Layers. Makes everything simpler to just have people building the layers to use a
// recent version of the NDK.
//
// This avoids issues with older NDKs which complicate correct CMake builds:
// Example:
//
// The NDK toolchain file in r23 contains a bug which means CMAKE_ANDROID_EXCEPTIONS might not be set correctly in some
// circumstances, if not set directly by the developer.
#if __NDK_MAJOR__ < 25
#error "Validation Layers require at least NDK r25 or greater to build"
#endif
// This catches before dlopen fails if the default Android-26 layers are being used and attempted to be ran on Android 25 or below
void __attribute__((constructor)) CheckAndroidVersion() {
const std::string version = GetEnvironment("ro.build.version.sdk");
if (version.empty()) {
return;
}
constexpr uint32_t target_android_api = 26;
constexpr uint32_t android_api = __ANDROID_API__;
static_assert(android_api >= target_android_api, "Vulkan-ValidationLayers is not supported on Android 25 and below");
uint32_t queried_version{};
if (std::from_chars(version.data(), version.data() + version.size(), queried_version).ec != std::errc()) {
return;
}
if (queried_version < target_android_api) {
__android_log_print(ANDROID_LOG_FATAL, "VALIDATION", "ERROR - Android version is %d and needs to be 26 or above.",
queried_version);
}
}
#endif
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