mirror of
https://github.com/libretro/RetroArch.git
synced 2024-12-04 22:46:46 +00:00
df79b8ea3d
Avoid issues when relative libretro paths are stored in ROM history.
611 lines
14 KiB
C
611 lines
14 KiB
C
/* RetroArch - A frontend for libretro.
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* Copyright (C) 2010-2013 - Hans-Kristian Arntzen
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*
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* RetroArch is free software: you can redistribute it and/or modify it under the terms
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* of the GNU General Public License as published by the Free Software Found-
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* ation, either version 3 of the License, or (at your option) any later version.
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*
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* RetroArch is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
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* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along with RetroArch.
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* If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "file.h"
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#include "general.h"
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#include <stdlib.h>
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#include "boolean.h"
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#include <string.h>
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#include <time.h>
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#include "compat/strl.h"
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#include "compat/posix_string.h"
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#if defined(__CELLOS_LV2__) && !defined(__PSL1GHT__) || defined(__BLACKBERRY_QNX__)
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#include <unistd.h> //stat() is defined here
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#endif
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#if defined(__CELLOS_LV2__)
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#ifndef S_ISDIR
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#define S_ISDIR(x) (x & 0040000)
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#endif
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#endif
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#if defined(_WIN32)
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#ifdef _MSC_VER
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#define setmode _setmode
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#endif
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#ifdef _XBOX
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#include <xtl.h>
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#define INVALID_FILE_ATTRIBUTES -1
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#else
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#include <io.h>
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#include <fcntl.h>
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#include <windows.h>
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#endif
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#else
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <dirent.h>
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#include <unistd.h>
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#endif
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void string_list_free(struct string_list *list)
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{
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if (!list)
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return;
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for (size_t i = 0; i < list->size; i++)
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free(list->elems[i].data);
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free(list->elems);
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free(list);
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}
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static bool string_list_capacity(struct string_list *list, size_t cap)
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{
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rarch_assert(cap > list->size);
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struct string_list_elem *new_data = (struct string_list_elem*)realloc(list->elems, cap * sizeof(*new_data));
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if (!new_data)
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return false;
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list->elems = new_data;
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list->cap = cap;
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return true;
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}
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static struct string_list *string_list_new(void)
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{
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struct string_list *list = (struct string_list*)calloc(1, sizeof(*list));
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if (!list)
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return NULL;
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if (!string_list_capacity(list, 32))
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{
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string_list_free(list);
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return NULL;
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}
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return list;
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}
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static bool string_list_append(struct string_list *list, const char *elem, union string_list_elem_attr attr)
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{
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if (list->size >= list->cap &&
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!string_list_capacity(list, list->cap * 2))
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return false;
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char *dup = strdup(elem);
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if (!dup)
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return false;
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list->elems[list->size].data = dup;
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list->elems[list->size].attr = attr;
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list->size++;
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return true;
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}
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struct string_list *string_split(const char *str, const char *delim)
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{
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char *copy = NULL;
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const char *tmp = NULL;
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struct string_list *list = string_list_new();
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if (!list)
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goto error;
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copy = strdup(str);
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if (!copy)
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goto error;
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char *save;
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tmp = strtok_r(copy, delim, &save);
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while (tmp)
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{
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union string_list_elem_attr attr;
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memset(&attr, 0, sizeof(attr));
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if (!string_list_append(list, tmp, attr))
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goto error;
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tmp = strtok_r(NULL, delim, &save);
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}
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free(copy);
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return list;
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error:
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string_list_free(list);
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free(copy);
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return NULL;
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}
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bool string_list_find_elem(const struct string_list *list, const char *elem)
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{
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if (!list)
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return false;
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for (size_t i = 0; i < list->size; i++)
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{
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if (strcasecmp(list->elems[i].data, elem) == 0)
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return true;
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}
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return false;
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}
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bool string_list_find_elem_prefix(const struct string_list *list, const char *prefix, const char *elem)
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{
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if (!list)
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return false;
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char prefixed[PATH_MAX];
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snprintf(prefixed, sizeof(prefixed), "%s%s", prefix, elem);
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for (size_t i = 0; i < list->size; i++)
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{
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if (strcasecmp(list->elems[i].data, elem) == 0 ||
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strcasecmp(list->elems[i].data, prefixed) == 0)
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return true;
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}
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return false;
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}
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const char *path_get_extension(const char *path)
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{
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const char *ext = strrchr(path, '.');
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if (ext)
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return ext + 1;
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else
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return "";
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}
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static int qstrcmp_plain(const void *a_, const void *b_)
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{
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const struct string_list_elem *a = (const struct string_list_elem*)a_;
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const struct string_list_elem *b = (const struct string_list_elem*)b_;
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return strcasecmp(a->data, b->data);
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}
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static int qstrcmp_dir(const void *a_, const void *b_)
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{
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const struct string_list_elem *a = (const struct string_list_elem*)a_;
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const struct string_list_elem *b = (const struct string_list_elem*)b_;
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// Sort directories before files.
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int a_dir = a->attr.b;
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int b_dir = b->attr.b;
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if (a_dir != b_dir)
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return b_dir - a_dir;
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else
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return strcasecmp(a->data, b->data);
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}
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void dir_list_sort(struct string_list *list, bool dir_first)
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{
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if (!list)
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return;
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qsort(list->elems, list->size, sizeof(struct string_list_elem),
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dir_first ? qstrcmp_dir : qstrcmp_plain);
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}
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#ifdef _WIN32 // Because the API is just fucked up ...
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struct string_list *dir_list_new(const char *dir, const char *ext, bool include_dirs)
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{
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struct string_list *list = string_list_new();
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if (!list)
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return NULL;
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HANDLE hFind = INVALID_HANDLE_VALUE;
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WIN32_FIND_DATA ffd;
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char path_buf[PATH_MAX];
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snprintf(path_buf, sizeof(path_buf), "%s\\*", dir);
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struct string_list *ext_list = NULL;
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if (ext)
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ext_list = string_split(ext, "|");
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hFind = FindFirstFile(path_buf, &ffd);
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if (hFind == INVALID_HANDLE_VALUE)
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goto error;
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do
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{
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const char *name = ffd.cFileName;
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const char *file_ext = path_get_extension(name);
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bool is_dir = ffd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY;
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if (!include_dirs && is_dir)
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continue;
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if (strcmp(name, ".") == 0 || strcmp(name, "..") == 0)
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continue;
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if (!is_dir && ext_list && !string_list_find_elem_prefix(ext_list, ".", file_ext))
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continue;
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char file_path[PATH_MAX];
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fill_pathname_join(file_path, dir, name, sizeof(file_path));
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union string_list_elem_attr attr;
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attr.b = is_dir;
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if (!string_list_append(list, file_path, attr))
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goto error;
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}
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while (FindNextFile(hFind, &ffd) != 0);
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FindClose(hFind);
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string_list_free(ext_list);
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return list;
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error:
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RARCH_ERR("Failed to open directory: \"%s\"\n", dir);
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if (hFind != INVALID_HANDLE_VALUE)
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FindClose(hFind);
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string_list_free(list);
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string_list_free(ext_list);
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return NULL;
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}
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#else
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static bool dirent_is_directory(const char *path, const struct dirent *entry)
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{
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#if defined(PSP)
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return (entry->d_stat.st_attr & FIO_SO_IFDIR) == FIO_SO_IFDIR;
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#elif defined(DT_DIR)
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if (entry->d_type == DT_DIR)
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return true;
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else if (entry->d_type == DT_UNKNOWN // This can happen on certain file systems.
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|| entry->d_type == DT_LNK)
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return path_is_directory(path);
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else
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return false;
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#else // dirent struct doesn't have d_type, do it the slow way ...
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return path_is_directory(path);
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#endif
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}
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struct string_list *dir_list_new(const char *dir, const char *ext, bool include_dirs)
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{
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struct string_list *list = string_list_new();
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if (!list)
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return NULL;
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DIR *directory = NULL;
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const struct dirent *entry = NULL;
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struct string_list *ext_list = NULL;
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if (ext)
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ext_list = string_split(ext, "|");
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directory = opendir(dir);
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if (!directory)
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goto error;
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while ((entry = readdir(directory)))
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{
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const char *name = entry->d_name;
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const char *file_ext = path_get_extension(name);
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char file_path[PATH_MAX];
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fill_pathname_join(file_path, dir, name, sizeof(file_path));
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bool is_dir = dirent_is_directory(file_path, entry);
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if (!include_dirs && is_dir)
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continue;
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if (strcmp(name, ".") == 0 || strcmp(name, "..") == 0)
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continue;
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if (!is_dir && ext_list && !string_list_find_elem_prefix(ext_list, ".", file_ext))
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continue;
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union string_list_elem_attr attr;
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attr.b = is_dir;
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if (!string_list_append(list, file_path, attr))
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goto error;
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}
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closedir(directory);
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string_list_free(ext_list);
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return list;
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error:
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RARCH_ERR("Failed to open directory: \"%s\"\n", dir);
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if (directory)
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closedir(directory);
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string_list_free(list);
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string_list_free(ext_list);
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return NULL;
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}
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#endif
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void dir_list_free(struct string_list *list)
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{
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string_list_free(list);
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}
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static bool path_char_is_slash(char c)
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{
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#ifdef _WIN32
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return (c == '/') || (c == '\\');
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#else
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return c == '/';
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#endif
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}
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static const char *path_default_slash(void)
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{
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#ifdef _WIN32
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return "\\";
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#else
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return "/";
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#endif
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}
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bool path_is_directory(const char *path)
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{
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#ifdef _WIN32
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DWORD ret = GetFileAttributes(path);
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return (ret & FILE_ATTRIBUTE_DIRECTORY) && (ret != INVALID_FILE_ATTRIBUTES);
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#else
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struct stat buf;
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if (stat(path, &buf) < 0)
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return false;
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return S_ISDIR(buf.st_mode);
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#endif
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}
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bool path_file_exists(const char *path)
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{
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FILE *dummy = fopen(path, "rb");
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if (dummy)
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{
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fclose(dummy);
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return true;
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}
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return false;
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}
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void fill_pathname(char *out_path, const char *in_path, const char *replace, size_t size)
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{
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char tmp_path[PATH_MAX];
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rarch_assert(strlcpy(tmp_path, in_path, sizeof(tmp_path)) < sizeof(tmp_path));
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char *tok = strrchr(tmp_path, '.');
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if (tok)
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*tok = '\0';
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rarch_assert(strlcpy(out_path, tmp_path, size) < size);
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rarch_assert(strlcat(out_path, replace, size) < size);
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}
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void fill_pathname_noext(char *out_path, const char *in_path, const char *replace, size_t size)
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{
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rarch_assert(strlcpy(out_path, in_path, size) < size);
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rarch_assert(strlcat(out_path, replace, size) < size);
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}
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static char *find_last_slash(const char *str)
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{
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const char *slash = strrchr(str, '/');
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#ifdef _WIN32
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const char *backslash = strrchr(str, '\\');
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if (backslash && ((slash && backslash > slash) || !slash))
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slash = backslash;
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#endif
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return (char*)slash;
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}
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// Assumes path is a directory. Appends a slash
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// if not already there.
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static void fill_pathname_slash(char *path, size_t size)
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{
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size_t path_len = strlen(path);
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const char *last_slash = find_last_slash(path);
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// Try to preserve slash type.
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if (last_slash && (last_slash != (path + path_len - 1)))
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{
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char join_str[2] = {*last_slash};
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rarch_assert(strlcat(path, join_str, size) < size);
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}
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else if (!last_slash)
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rarch_assert(strlcat(path, path_default_slash(), size) < size);
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}
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void fill_pathname_dir(char *in_dir, const char *in_basename, const char *replace, size_t size)
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{
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fill_pathname_slash(in_dir, size);
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const char *base = path_basename(in_basename);
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rarch_assert(strlcat(in_dir, base, size) < size);
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rarch_assert(strlcat(in_dir, replace, size) < size);
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}
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void fill_pathname_base(char *out, const char *in_path, size_t size)
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{
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const char *ptr = find_last_slash(in_path);
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if (ptr)
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ptr++;
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else
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ptr = in_path;
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rarch_assert(strlcpy(out, ptr, size) < size);
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}
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void fill_pathname_basedir(char *out_dir, const char *in_path, size_t size)
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{
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rarch_assert(strlcpy(out_dir, in_path, size) < size);
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path_basedir(out_dir);
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}
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void fill_pathname_parent_dir(char *out_dir, const char *in_dir, size_t size)
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{
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rarch_assert(strlcpy(out_dir, in_dir, size) < size);
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path_parent_dir(out_dir);
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}
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void fill_dated_filename(char *out_filename, const char *ext, size_t size)
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{
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time_t cur_time;
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time(&cur_time);
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strftime(out_filename, size, "RetroArch-%m%d-%H%M%S.", localtime(&cur_time));
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strlcat(out_filename, ext, size);
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}
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void path_basedir(char *path)
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{
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if (strlen(path) < 2)
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return;
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char *last = find_last_slash(path);
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if (last)
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last[1] = '\0';
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else
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snprintf(path, 3, ".%s", path_default_slash());
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}
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void path_parent_dir(char *path)
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{
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size_t len = strlen(path);
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if (len && path_char_is_slash(path[len - 1]))
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path[len - 1] = '\0';
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path_basedir(path);
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}
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const char *path_basename(const char *path)
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{
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const char *last = find_last_slash(path);
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if (last)
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return last + 1;
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else
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return path;
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}
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bool path_is_absolute(const char *path)
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{
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#ifdef _WIN32
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// Many roads lead to Rome ...
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return path[0] == '/' || (strstr(path, "\\\\") == path) || strstr(path, ":/") || strstr(path, ":\\") || strstr(path, ":\\\\");
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#else
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return path[0] == '/';
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#endif
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}
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void path_resolve_realpath(char *buf, size_t size)
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{
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#ifndef RARCH_CONSOLE
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char tmp[PATH_MAX];
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strlcpy(tmp, buf, sizeof(tmp));
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#ifdef _WIN32
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if (!_fullpath(buf, tmp, size))
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strlcpy(buf, tmp, size);
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#else
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rarch_assert(size >= PATH_MAX);
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// NOTE: realpath() expects at least PATH_MAX bytes in buf.
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// Technically, PATH_MAX needn't be defined, but we rely on it anyways.
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// POSIX 2008 can automatically allocate for you, but don't rely on that.
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if (!realpath(tmp, buf))
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strlcpy(buf, tmp, size);
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#endif
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|
|
#else
|
|
(void)buf;
|
|
(void)size;
|
|
#endif
|
|
}
|
|
|
|
void fill_pathname_resolve_relative(char *out_path, const char *in_refpath, const char *in_path, size_t size)
|
|
{
|
|
if (path_is_absolute(in_path))
|
|
rarch_assert(strlcpy(out_path, in_path, size) < size);
|
|
else
|
|
{
|
|
rarch_assert(strlcpy(out_path, in_refpath, size) < size);
|
|
path_basedir(out_path);
|
|
rarch_assert(strlcat(out_path, in_path, size) < size);
|
|
}
|
|
}
|
|
|
|
void fill_pathname_join(char *out_path, const char *dir, const char *path, size_t size)
|
|
{
|
|
rarch_assert(strlcpy(out_path, dir, size) < size);
|
|
|
|
if (*out_path)
|
|
fill_pathname_slash(out_path, size);
|
|
|
|
rarch_assert(strlcat(out_path, path, size) < size);
|
|
}
|
|
|
|
#ifndef RARCH_CONSOLE
|
|
void fill_pathname_application_path(char *buf, size_t size)
|
|
{
|
|
if (!size)
|
|
return;
|
|
|
|
#ifdef _WIN32
|
|
DWORD ret = GetModuleFileName(GetModuleHandle(NULL), buf, size - 1);
|
|
buf[ret] = '\0';
|
|
#else
|
|
|
|
*buf = '\0';
|
|
pid_t pid = getpid();
|
|
char link_path[PATH_MAX];
|
|
static const char *exts[] = { "exe", "file", "path/a.out" }; // Linux, BSD and Solaris paths. Not standardized.
|
|
for (unsigned i = 0; i < ARRAY_SIZE(exts); i++)
|
|
{
|
|
snprintf(link_path, sizeof(link_path), "/proc/%u/%s", (unsigned)pid, exts[i]);
|
|
ssize_t ret = readlink(link_path, buf, size - 1);
|
|
if (ret >= 0)
|
|
{
|
|
buf[ret] = '\0';
|
|
return;
|
|
}
|
|
}
|
|
|
|
RARCH_ERR("Cannot resolve application path! This should not happen.\n");
|
|
#endif
|
|
}
|
|
#endif
|