Jungfraujoch/common/CheckPath.h

// SPDX-FileCopyrightText: 2024 Filip Leonarski, Paul Scherrer Institute <filip.leonarski@psi.ch>
// SPDX-License-Identifier: GPL-3.0-only

#pragma once

#include <string>
#include "JFJochException.h"

inline void CheckPath(const std::string &s) {
    // CheckPath looks validates that s can be a valid file name
    // (in practice with an added suffix, .e.g. _master.h5 or .tiff)
    // It avoids paths going outside of a given directory

    if (!s.empty() && (s.front() == '/' || s.back() == '/'))
        throw JFJochException(JFJochExceptionCategory::InputParameterInvalid,
                              "Path cannot start with slash");
    if (s.size() >= 3 && s.substr(0,3) == "../")
        throw JFJochException(JFJochExceptionCategory::InputParameterInvalid,
                              "Path cannot start with ../");
    if (s.find("/../") != std::string::npos)
        throw JFJochException(JFJochExceptionCategory::InputParameterInvalid,
                              "Path cannot contain /../");
}