[core/file_sys] implement IApplicationFunctions::GetPseudoDeviceId; common PatchManager::GetNACP for base|updates (#4159)

a bit of refactoring so there's less code duplication...
probably a good idea to make it a lambda anyways
maybe this is why QLauncher didn't have proper DLCs and updates?

either way "GetPseudoDeviceId" is now implemented (still stubbed) with a proper hash instead of just 0

Signed-off-by: lizzie <lizzie@eden-emu.dev>

Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/4159
Reviewed-by: Maufeat <sahyno1996@gmail.com>
Reviewed-by: CamilleLaVey <camillelavey99@gmail.com>

2 files changed, 24 insertions, 20 deletions

diff --git a/src/common/uuid.cpp b/src/common/uuid.cpp
index d4a5733c26..51fe0abaa5 100644
--- a/src/common/uuid.cpp
+++ b/src/common/uuid.cpp
@@ -208,4 +208,12 @@ UUID UUID::MakeRandomRFC4122V4() {
     return uuid;
 }
 
+UUID UUID::MakeRFC4122V5(std::span<u8, 20> sha1) {
+    UUID uuid{};
+    std::memcpy(&uuid.uuid, sha1.data(), sizeof(UUID));
+    uuid.uuid[8] = 0x80 | (uuid.uuid[8] & 0x3F);
+    uuid.uuid[6] = 0x50 | (uuid.uuid[6] & 0xF);
+    return uuid;
+}
+
 } // namespace Common
diff --git a/src/common/uuid.h b/src/common/uuid.h
index 60c5d75f12..c3cbd7b479 100644
--- a/src/common/uuid.h
+++ b/src/common/uuid.h
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
@@ -5,6 +8,7 @@
 
 #include <array>
 #include <functional>
+#include <span>
 #include <string>
 
 #include "common/common_types.h"
@@ -86,28 +90,20 @@ struct UUID {
         };
     }
 
-    /**
-     * Creates a random UUID.
-     *
-     * @returns A random UUID.
-     */
-    static UUID MakeRandom();
+    /// @brief Creates a random UUID.
+    /// @returns A random UUID.
+    [[nodiscard]] static UUID MakeRandom();
 
-    /**
-     * Creates a random UUID with a seed.
-     *
-     * @param seed A seed to initialize the Mersenne-Twister RNG
-     *
-     * @returns A random UUID.
-     */
-    static UUID MakeRandomWithSeed(u32 seed);
+    /// @brief Creates a random UUID with a seed.
+    /// @param seed A seed to initialize the Mersenne-Twister RNG
+    /// @returns A random UUID.
+    [[nodiscard]] static UUID MakeRandomWithSeed(u32 seed);
 
-    /**
-     * Creates a random UUID. The generated UUID is RFC 4122 Version 4 compliant.
-     *
-     * @returns A random UUID that is RFC 4122 Version 4 compliant.
-     */
-    static UUID MakeRandomRFC4122V4();
+    /// @brief Creates a random UUID. The generated UUID is RFC 4122 Version 4 compliant.
+    /// @returns A random UUID that is RFC 4122 Version 4 compliant.
+    [[nodiscard]] static UUID MakeRandomRFC4122V4();
+
+    [[nodiscard]] static UUID MakeRFC4122V5(std::span<u8, 20> sha1);
 
     friend constexpr bool operator==(const UUID& lhs, const UUID& rhs) = default;
 };