/* Chrysalide - Outil d'analyse de fichiers binaires
 * io.c - entrées sorties fiables
 *
 * Copyright (C) 2014 Cyrille Bagard
 *
 *  This file is part of Chrysalide.
 *
 *  OpenIDA is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  OpenIDA 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 General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with Foobar.  If not, see <http://www.gnu.org/licenses/>.
 */


#include "io.h"


#include <libgen.h>
#include <malloc.h>
#include <string.h>
#include <unistd.h>
#include <sys/stat.h>



/******************************************************************************
*                                                                             *
*  Paramètres  : path = chemin d'accès à valider.                             *
*                                                                             *
*  Description : S'assure qu'un chemin donné existe dans le système.          *
*                                                                             *
*  Retour      : 0 si le chemin est actuellement présent, -1 sinon.           *
*                                                                             *
*  Remarques   : -                                                            *
*                                                                             *
******************************************************************************/

int ensure_path_exists(const char *path)
{
    int result;                             /* Bilan de l'assurance        */
    char *copy;                             /* Chemin libérable            */
    char *tmp;                              /* Chemin altérable            */

    copy = strdup(path);
    tmp = dirname(copy);

    result = access(tmp, W_OK | X_OK);

    if (result != 0)
    {
        result = ensure_path_exists(tmp);

        if (result == 0)
            result = mkdir(tmp, 0700);

    }

    free(copy);

    return result;

}