1 files changed, 139 insertions, 0 deletions
diff --git a/src/frontend_common/firmware_manager.cpp b/src/frontend_common/firmware_manager.cpp
new file mode 100644
index 0000000000..f1022579be
--- /dev/null
+++ b/src/frontend_common/firmware_manager.cpp
@@ -0,0 +1,139 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "firmware_manager.h"
+#include <filesystem>
+#include <common/fs/fs_paths.h>
+
+#include "common/fs/fs.h"
+#include "common/fs/path_util.h"
+
+#include "common/logging/backend.h"
+
+#include "core/crypto/key_manager.h"
+#include "frontend_common/content_manager.h"
+
+#ifdef ANDROID
+#include <jni.h>
+#include <common/android/id_cache.h>
+#include <common/android/android_common.h>
+#endif
+
+FirmwareManager::KeyInstallResult
+FirmwareManager::InstallKeys(std::string location, std::string extension) {
+    LOG_INFO(Frontend, "Installing key files from {}", location);
+
+    const auto keys_dir = Common::FS::GetEdenPath(Common::FS::EdenPath::KeysDir);
+
+#ifdef ANDROID
+    JNIEnv *env = Common::Android::GetEnvForThread();
+
+    jstring jsrc = Common::Android::ToJString(env, location);
+
+    jclass native = Common::Android::GetNativeLibraryClass();
+    jmethodID getExtension = Common::Android::GetFileExtension();
+
+    jstring jext = static_cast<jstring>(env->CallStaticObjectMethod(
+        native,
+        getExtension,
+        jsrc
+    ));
+
+    std::string ext = Common::Android::GetJString(env, jext);
+
+    if (ext != extension) {
+        return ErrorWrongFilename;
+    }
+
+    jmethodID copyToStorage = Common::Android::GetCopyToStorage();
+    jstring jdest = Common::Android::ToJString(env, keys_dir.string());
+
+    jboolean copyResult = env->CallStaticBooleanMethod(
+        native,
+        copyToStorage,
+        jsrc,
+        jdest
+    );
+
+    if (!copyResult) {
+        return ErrorFailedCopy;
+    }
+#else
+    if (!location.ends_with(extension)) {
+        return ErrorWrongFilename;
+    }
+
+    bool prod_keys_found = false;
+
+    const std::filesystem::path prod_key_path = location;
+    const std::filesystem::path key_source_path = prod_key_path.parent_path();
+
+    if (!Common::FS::IsDir(key_source_path)) {
+        return InvalidDir;
+    }
+
+    std::vector<std::filesystem::path> source_key_files;
+
+    if (Common::FS::Exists(prod_key_path)) {
+        prod_keys_found = true;
+        source_key_files.emplace_back(prod_key_path);
+    }
+
+    if (Common::FS::Exists(key_source_path / "title.keys")) {
+        source_key_files.emplace_back(key_source_path / "title.keys");
+    }
+
+    if (Common::FS::Exists(key_source_path / "key_retail.bin")) {
+        source_key_files.emplace_back(key_source_path / "key_retail.bin");
+    }
+
+    if (source_key_files.empty() || !prod_keys_found) {
+        return ErrorWrongFilename;
+    }
+
+    for (const auto &key_file : source_key_files) {
+        std::filesystem::path destination_key_file = keys_dir / key_file.filename();
+        if (!std::filesystem::copy_file(key_file,
+                                        destination_key_file,
+                                        std::filesystem::copy_options::overwrite_existing)) {
+            LOG_ERROR(Frontend,
+                      "Failed to copy file {} to {}",
+                      key_file.string(),
+                      destination_key_file.string());
+            return ErrorFailedCopy;
+        }
+    }
+#endif
+
+    // Reinitialize the key manager
+    Core::Crypto::KeyManager::Instance().ReloadKeys();
+
+    if (ContentManager::AreKeysPresent()) {
+        return Success;
+    }
+
+    // Let the frontend handle everything else
+    return ErrorFailedInit;
+}
+
+FirmwareManager::FirmwareCheckResult FirmwareManager::VerifyFirmware(Core::System &system) {
+    if (!CheckFirmwarePresence(system)) {
+        return ErrorFirmwareMissing;
+    } else {
+        const auto pair = GetFirmwareVersion(system);
+        const auto firmware_data = pair.first;
+        const auto result = pair.second;
+
+        if (result.IsError()) {
+            LOG_INFO(Frontend, "Unable to read firmware");
+            return ErrorFirmwareCorrupted;
+        }
+
+        // TODO: update this whenever newer firmware is properly supported
+        if (firmware_data.major > 19) {
+            return ErrorFirmwareTooNew;
+        }
+    }
+
+    return FirmwareGood;
+}