mkdir.cpp

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/*
 * The ManaPlus Client
 * Copyright (C) 2010 The Mana Developers
 * Copyright (C) 2011-2019 The ManaPlus Developers
 * Copyright (C) 2019-2021 Andrei Karas
 *
 * This file is part of The ManaPlus Client.
 *
 * This program 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 2 of the License, or
 * any later version.
 *
 * This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
 */
 
#include "fs/mkdir.h"
 
#include "utils/cast.h"
 
#if defined WIN32
#include <limits.h>
#include <windows.h>
#endif // defined WIN32
 
#include <sys/stat.h>
 
#include "debug.h"
 
#if defined WIN32
int mkdir_r(const char *const pathname)
{
 if (!pathname)
 return -1;
 
 char tmp[PATH_MAX];
 char tmp2[PATH_MAX];
 char *p;
 
 if (strlen(pathname) >= PATH_MAX - 2)
 return -1;
 
 strncpy(tmp, pathname, sizeof(tmp) - 1);
 tmp[PATH_MAX - 1] = '\0';
 
 const int len = CAST_S32(strlen(tmp));
 
 if (len < 1 || len >= INT_MAX)
 return -1;
 
 // terminate the pathname with '/'
 if (tmp[len - 1] != '/')
 {
 tmp[len] = '/';
 tmp[len + 1] = '\0';
 }
 
 for (p = tmp; *p; p++)
 {
 if (*p == '/' || *p == '\\')
 {
 *p = '\0';
 // ignore a slash at the beginning of a path
 if (tmp[0] == 0)
 {
 *p = '/';
 continue;
 }
 
 strcpy(tmp2, tmp);
 char *p2 = tmp2 + strlen(tmp2) - 1;
 if (*p2 == '/' || *p2 == '\\')
 *p2 = 0;
 // check if the name already exists, but not as directory
 struct stat statbuf;
 if (!stat(tmp2, &statbuf))
 {
 if (S_ISDIR(statbuf.st_mode))
 {
 *p = '/';
 continue;
 }
 else
 return -1;
 }
 
 if (!CreateDirectory(tmp2, nullptr))
 {
 // hack, hack. just assume that x: might be a drive
 // letter, and try again
 if (!(strlen(tmp2) == 2 && !strcmp(tmp2 + 1, ":")))
 return -1;
 }
 
 *p = '/';
 }
 }
 return 0;
}
#else // WIN32
 
int mkdir_r(const char *const pathname)
{
 if (pathname == nullptr)
 return -1;
 
 const size_t len = CAST_SIZE(strlen(pathname));
 char *tmp = new char[len + 2];
 char *p = nullptr;
 
 strcpy(tmp, pathname);
 
 // terminate the pathname with '/'
 if (tmp[len - 1] != '/')
 {
 tmp[len] = '/';
 tmp[len + 1] = '\0';
 }
 
 for (p = tmp; *p != 0; p++)
 {
 if (*p == '/')
 {
 *p = '\0';
 // ignore a slash at the beginning of a path
 if (tmp[0] == 0)
 {
 *p = '/';
 continue;
 }
 
 // check if the name already exists, but not as directory
 struct stat statbuf;
 if (stat(tmp, &statbuf) == 0)
 {
 if (S_ISDIR(statbuf.st_mode))
 {
 *p = '/';
 continue;
 }
 else
 {
 delete []tmp;
 return -1;
 }
 }
 
 if (mkdir(tmp, S_IRWXU | S_IRWXG | S_IROTH | S_IXOTH) != 0)
 {
 delete []tmp;
 return -1;
 }
 
 *p = '/';
 }
 }
 delete []tmp;
 return 0;
}
#endif // WIN32