FilesystemPermissions.hpp

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*/
 
#ifndef FILESYSTEMPERMISSIONS_HPP_
#define FILESYSTEMPERMISSIONS_HPP_
 
#include <system_error>
 
#include "FileFinder.hpp"
 
class FilesystemPermissions
{
public:
    static fs::perms GetFilePermissions()
    {
        return fs::perms::owner_read | fs::perms::owner_write | fs::perms::group_read;
    }
 
    static fs::perms GetDirectoryPermissions()
    {
        return fs::perms::owner_all | fs::perms::group_read | fs::perms::group_exec
               | fs::perms::others_read | fs::perms::others_exec;
    }
 
    static void SetFilePermissions(const fs::path& rPath)
    {
        // Best-effort: some filesystems (e.g. macOS Docker bind mounts) do not support
        // changing permissions, so use the non-throwing overload and ignore any failure.
        // Correct permissions are desirable but are not required for correctness, so this
        // must never cause an abort.
        std::error_code ec;
        fs::permissions(rPath, GetFilePermissions(), fs::perm_options::replace, ec);
    }
 
    static void SetDirectoryPermissions(const fs::path& rPath)
    {
        // Best-effort; see SetFilePermissions for the rationale.
        std::error_code ec;
        fs::permissions(rPath, GetDirectoryPermissions(), fs::perm_options::replace, ec);
    }
 
    static bool CreateDirectoryWithPermissions(const fs::path& rPath)
    {
        bool created_dir = fs::create_directory(rPath);
        if (created_dir)
        {
            SetDirectoryPermissions(rPath);
        }
        return created_dir;
    }
 
    static bool CreateDirectoriesWithPermissions(const fs::path& rPath)
    {
        if (fs::exists(rPath))
        {
            return false;
        }
 
        fs::path parent_path = rPath.parent_path();
        bool created_parent = false;
        if (!parent_path.empty() && parent_path != rPath && !fs::exists(parent_path))
        {
            created_parent = CreateDirectoriesWithPermissions(parent_path);
        }
 
        return CreateDirectoryWithPermissions(rPath) || created_parent;
    }
 
    static void CopyFileWithPermissions(const fs::path& rFromPath, const fs::path& rToPath)
    {
        fs::copy_file(rFromPath, rToPath);
        SetFilePermissions(rToPath);
    }
};
 
#endif /*FILESYSTEMPERMISSIONS_HPP_*/