Fluorine Manager: full Linux port of Mod Organizer 2

Complete native Linux port with FUSE-based virtual filesystem,
Proton/umu-run integration, and Flatpak packaging.

Key features:
- FUSE VFS replacing Windows USVFS (in-process + standalone helper for Flatpak)
- Proton/GE-Proton/umu-run launcher with env var forwarding
- Flatpak support (sandbox-aware VFS, NXM handler, umu-run)
- Wine prefix management UI
- Case-insensitive path resolution for Linux filesystems
- QSettings-safe INI handling (avoids Bethesda INI corruption)
- Portable instance support with auto-generated launcher scripts

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

1 files changed, 164 insertions, 0 deletions

diff --git a/libs/archive/src/library.h b/libs/archive/src/library.h
new file mode 100644
index 0000000..9fec56d
--- /dev/null
+++ b/libs/archive/src/library.h
@@ -0,0 +1,164 @@
+/*
+Mod Organizer archive handling
+
+Copyright (C) 2020 MO2 Team. All rights reserved.
+
+This library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Lesser General Public
+License as published by the Free Software Foundation; either
+version 3 of the License, or (at your option) any later version.
+
+This library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Lesser General Public License for more details.
+
+You should have received a copy of the GNU Lesser General Public
+License along with this library; if not, write to the Free Software
+Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+*/
+
+#ifndef ARCHIVE_LIBRARY_H
+#define ARCHIVE_LIBRARY_H
+
+#ifdef _WIN32
+#include <Windows.h>
+#else
+#include <Common/MyWindows.h>
+#include <cstdlib>
+#include <dlfcn.h>
+#include <string>
+#include <unistd.h>
+#include <vector>
+#endif
+
+/**
+ * Very small wrapper around shared libraries (DLL on Windows, .so on Linux).
+ */
+class ALibrary
+{
+public:
+#ifdef _WIN32
+  ALibrary(const char* path) : m_Module{nullptr}, m_LastError{ERROR_SUCCESS}
+  {
+    m_Module = LoadLibraryA(path);
+    if (m_Module == nullptr) {
+      updateLastError();
+    }
+  }
+
+  ~ALibrary()
+  {
+    if (m_Module) {
+      FreeLibrary(m_Module);
+    }
+  }
+
+  template <class T>
+  T resolve(const char* procName)
+  {
+    if (!m_Module) {
+      return nullptr;
+    }
+    auto proc = GetProcAddress(m_Module, procName);
+    if (!proc) {
+      updateLastError();
+      return nullptr;
+    }
+    return reinterpret_cast<T>(proc);
+  }
+
+  DWORD getLastError() const { return m_LastError; }
+  bool isOpen() const { return m_Module != nullptr; }
+  operator bool() const { return isOpen(); }
+
+private:
+  void updateLastError() { m_LastError = ::GetLastError(); }
+
+  HMODULE m_Module;
+  DWORD m_LastError;
+
+#else // Linux
+
+  ALibrary(const char* path) : m_Handle{nullptr}, m_LastError{0}
+  {
+    // Find the directory containing our own executable
+    std::string exeDir;
+    char selfPath[4096];
+    ssize_t len = readlink("/proc/self/exe", selfPath, sizeof(selfPath) - 1);
+    if (len > 0) {
+      selfPath[len] = '\0';
+      exeDir = std::string(selfPath);
+      auto slash = exeDir.rfind('/');
+      if (slash != std::string::npos)
+        exeDir = exeDir.substr(0, slash);
+    }
+
+    // AppImage: check MO2_DLLS_DIR env var first (writable dir next to AppImage)
+    std::string envDlls;
+    const char* envVal = std::getenv("MO2_DLLS_DIR");
+    if (envVal && envVal[0] != '\0') {
+      envDlls = envVal;
+    }
+
+    // Try bundled 7z.so locations first (env override, exe dir, dlls/ subdir)
+    std::vector<std::string> tryPaths;
+    if (!envDlls.empty()) {
+      tryPaths.push_back(envDlls + "/7z.so");
+    }
+    tryPaths.push_back(exeDir + "/7z.so");
+    tryPaths.push_back(exeDir + "/dlls/7z.so");
+    tryPaths.push_back("7z.so");
+    tryPaths.push_back("dlls/7z.so");
+    tryPaths.push_back("/usr/lib/p7zip/7z.so");
+    tryPaths.push_back("/usr/lib64/p7zip/7z.so");
+    tryPaths.push_back("/usr/libexec/p7zip/7z.so");
+
+    for (const auto& tryPath : tryPaths) {
+      m_Handle = dlopen(tryPath.c_str(), RTLD_LAZY);
+      if (m_Handle) break;
+    }
+
+    if (!m_Handle) {
+      // Last resort: try the original path as-is
+      m_Handle = dlopen(path, RTLD_LAZY);
+    }
+
+    if (!m_Handle) {
+      m_LastError = 1;
+    }
+  }
+
+  ~ALibrary()
+  {
+    if (m_Handle) {
+      dlclose(m_Handle);
+    }
+  }
+
+  template <class T>
+  T resolve(const char* procName)
+  {
+    if (!m_Handle) {
+      return nullptr;
+    }
+    void* sym = dlsym(m_Handle, procName);
+    if (!sym) {
+      m_LastError = 1;
+      return nullptr;
+    }
+    return reinterpret_cast<T>(sym);
+  }
+
+  DWORD getLastError() const { return m_LastError; }
+  bool isOpen() const { return m_Handle != nullptr; }
+  operator bool() const { return isOpen(); }
+
+private:
+  void* m_Handle;
+  DWORD m_LastError;
+
+#endif
+};
+
+#endif