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RetroArch/core_info.c
libretroadmin bdc398d79f - Safer code - use strlcpy where possible instead of manual character 
assignments for strings longer than 2 chars
- Use strlcpy concatenation instead of strlcat
- Make sure that what remains of iteration of the '_len' variable
for manual char assignment
is done in a safer way so mistakes are less possible
2023-06-20 16:33:55 +02:00

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/* RetroArch - A frontend for libretro.
* Copyright (C) 2010-2014 - Hans-Kristian Arntzen
* Copyright (C) 2011-2017 - Daniel De Matteis
* Copyright (C) 2016-2019 - Brad Parker
*
* RetroArch 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 Found-
* ation, either version 3 of the License, or (at your option) any later version.
*
* RetroArch 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 RetroArch.
* If not, see <http://www.gnu.org/licenses/>.
*/
#include <compat/strl.h>
#include <string/stdstring.h>
#include <file/config_file.h>
#include <file/file_path.h>
#include <streams/file_stream.h>
#include <streams/interface_stream.h>
#include <formats/rjson.h>
#include <lists/dir_list.h>
#include <file/archive_file.h>
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "retroarch.h"
#include "verbosity.h"
#include "core_info.h"
#include "file_path_special.h"
#if defined(__WINRT__) || defined(WINAPI_FAMILY) && WINAPI_FAMILY == WINAPI_FAMILY_PHONE_APP
#include "uwp/uwp_func.h"
#endif
#if defined(ANDROID)
#include "play_feature_delivery/play_feature_delivery.h"
#endif
/*************************/
/* Core Info Cache START */
/*************************/
#define CORE_INFO_CACHE_VERSION "1.2"
#define CORE_INFO_CACHE_DEFAULT_CAPACITY 8
/* TODO/FIXME: Apparently rzip compression is an issue on UWP */
#if defined(HAVE_ZLIB) && !(defined(__WINRT__) || defined(WINAPI_FAMILY) && WINAPI_FAMILY == WINAPI_FAMILY_PHONE_APP)
#define CORE_INFO_CACHE_COMPRESS
#endif
typedef struct
{
core_info_t *items;
size_t length;
size_t capacity;
char *version;
bool refresh;
} core_info_cache_list_t;
typedef struct
{
core_info_t *core_info;
core_info_cache_list_t *core_info_cache_list;
char **current_string_val;
struct string_list **current_string_list_val;
uint32_t *current_entry_uint_val;
bool *current_entry_bool_val;
unsigned array_depth;
unsigned object_depth;
bool to_core_file_id;
bool to_firmware;
} CCJSONContext;
/* Forward declarations */
static void core_info_free(core_info_t* info);
static uint32_t core_info_hash_string(const char *str);
#ifdef HAVE_CORE_INFO_CACHE
static core_info_cache_list_t *core_info_cache_list_new(void);
#endif
static void core_info_cache_add(core_info_cache_list_t *list,
core_info_t *info, bool transfer);
static core_info_state_t core_info_st = {
#ifdef HAVE_COMPRESSION
NULL,
#endif
NULL,
NULL,
NULL
};
#ifdef HAVE_CORE_INFO_CACHE
/* JSON Handlers START */
static bool CCJSONObjectMemberHandler(void *context,
const char *pValue, size_t length)
{
CCJSONContext *pCtx = (CCJSONContext *)context;
if ( (pCtx->object_depth == 2)
&& (pCtx->array_depth == 1)
&& length)
{
pCtx->current_string_val = NULL;
pCtx->current_string_list_val = NULL;
pCtx->current_entry_uint_val = NULL;
pCtx->current_entry_bool_val = NULL;
pCtx->to_core_file_id = false;
pCtx->to_firmware = false;
switch (pValue[0])
{
case 'a':
if (string_is_equal(pValue, "authors"))
{
pCtx->current_string_val = &pCtx->core_info->authors;
pCtx->current_string_list_val = &pCtx->core_info->authors_list;
}
break;
case 'c':
if (string_is_equal(pValue, "categories"))
{
pCtx->current_string_val = &pCtx->core_info->categories;
pCtx->current_string_list_val = &pCtx->core_info->categories_list;
}
else if (string_is_equal(pValue, "core_name"))
pCtx->current_string_val = &pCtx->core_info->core_name;
else if (string_is_equal(pValue, "core_file_id"))
pCtx->to_core_file_id = true;
break;
case 'd':
if (string_is_equal(pValue, "display_name"))
pCtx->current_string_val = &pCtx->core_info->display_name;
else if (string_is_equal(pValue, "display_version"))
pCtx->current_string_val = &pCtx->core_info->display_version;
else if (string_is_equal(pValue, "databases"))
{
pCtx->current_string_val = &pCtx->core_info->databases;
pCtx->current_string_list_val = &pCtx->core_info->databases_list;
}
else if (string_is_equal(pValue, "description"))
pCtx->current_string_val = &pCtx->core_info->description;
else if (string_is_equal(pValue, "database_match_archive_member"))
pCtx->current_entry_bool_val = &pCtx->core_info->database_match_archive_member;
break;
case 'f':
if (string_is_equal(pValue, "firmware"))
pCtx->to_firmware = true;
break;
case 'h':
if (string_is_equal(pValue, "has_info"))
pCtx->current_entry_bool_val = &pCtx->core_info->has_info;
break;
case 'l':
if (string_is_equal(pValue, "licenses"))
{
pCtx->current_string_val = &pCtx->core_info->licenses;
pCtx->current_string_list_val = &pCtx->core_info->licenses_list;
}
else if (string_is_equal(pValue, "is_experimental"))
pCtx->current_entry_bool_val = &pCtx->core_info->is_experimental;
break;
case 'n':
if (string_is_equal(pValue, "notes"))
{
pCtx->current_string_val = &pCtx->core_info->notes;
pCtx->current_string_list_val = &pCtx->core_info->note_list;
}
break;
case 'p':
if (string_is_equal(pValue, "permissions"))
{
pCtx->current_string_val = &pCtx->core_info->permissions;
pCtx->current_string_list_val = &pCtx->core_info->permissions_list;
}
break;
case 'r':
if (string_is_equal(pValue, "required_hw_api"))
{
pCtx->current_string_val = &pCtx->core_info->required_hw_api;
pCtx->current_string_list_val = &pCtx->core_info->required_hw_api_list;
}
break;
case 's':
if (string_is_equal(pValue, "system_manufacturer"))
pCtx->current_string_val = &pCtx->core_info->system_manufacturer;
else if (string_is_equal(pValue, "systemname"))
pCtx->current_string_val = &pCtx->core_info->systemname;
else if (string_is_equal(pValue, "system_id"))
pCtx->current_string_val = &pCtx->core_info->system_id;
else if (string_is_equal(pValue, "supported_extensions"))
{
pCtx->current_string_val = &pCtx->core_info->supported_extensions;
pCtx->current_string_list_val = &pCtx->core_info->supported_extensions_list;
}
else if (string_is_equal(pValue, "supports_no_game"))
pCtx->current_entry_bool_val = &pCtx->core_info->supports_no_game;
else if (string_is_equal(pValue, "single_purpose"))
pCtx->current_entry_bool_val = &pCtx->core_info->single_purpose;
else if (string_is_equal(pValue, "savestate_support_level"))
pCtx->current_entry_uint_val = &pCtx->core_info->savestate_support_level;
break;
}
}
else if ( (pCtx->object_depth == 3)
&& (pCtx->array_depth == 1)
&& length)
{
pCtx->current_string_val = NULL;
pCtx->current_entry_uint_val = NULL;
if (pCtx->to_core_file_id)
{
if (string_is_equal(pValue, "str"))
pCtx->current_string_val = &pCtx->core_info->core_file_id.str;
else if (string_is_equal(pValue, "hash"))
pCtx->current_entry_uint_val = &pCtx->core_info->core_file_id.hash;
}
}
else if ( (pCtx->object_depth == 3)
&& (pCtx->array_depth == 2)
&& length)
{
pCtx->current_string_val = NULL;
pCtx->current_entry_bool_val = NULL;
if (pCtx->to_firmware && (pCtx->core_info->firmware_count > 0))
{
size_t firmware_idx = pCtx->core_info->firmware_count - 1;
if (string_is_equal(pValue, "path"))
pCtx->current_string_val = &pCtx->core_info->firmware[firmware_idx].path;
else if (string_is_equal(pValue, "desc"))
pCtx->current_string_val = &pCtx->core_info->firmware[firmware_idx].desc;
else if (string_is_equal(pValue, "optional"))
pCtx->current_entry_bool_val = &pCtx->core_info->firmware[firmware_idx].optional;
}
}
else if ( (pCtx->object_depth == 1)
&& (pCtx->array_depth == 0)
&& length)
{
pCtx->current_string_val = NULL;
if (string_is_equal(pValue, "version"))
pCtx->current_string_val = &pCtx->core_info_cache_list->version;
}
return true;
}
static bool CCJSONStringHandler(void *context,
const char *pValue, size_t length)
{
CCJSONContext *pCtx = (CCJSONContext*)context;
if ( pCtx->current_string_val
&& length
&& !string_is_empty(pValue))
{
if (*pCtx->current_string_val)
free(*pCtx->current_string_val);
*pCtx->current_string_val = strdup(pValue);
if (pCtx->current_string_list_val)
{
if (*pCtx->current_string_list_val)
string_list_free(*pCtx->current_string_list_val);
*pCtx->current_string_list_val =
string_split(*pCtx->current_string_val, "|");
}
}
pCtx->current_string_val = NULL;
pCtx->current_string_list_val = NULL;
return true;
}
static bool CCJSONNumberHandler(void *context,
const char *pValue, size_t length)
{
CCJSONContext *pCtx = (CCJSONContext*)context;
if (pCtx->current_entry_uint_val)
*pCtx->current_entry_uint_val = string_to_unsigned(pValue);
pCtx->current_entry_uint_val = NULL;
return true;
}
static bool CCJSONBoolHandler(void *context, bool value)
{
CCJSONContext *pCtx = (CCJSONContext *)context;
if (pCtx->current_entry_bool_val)
*pCtx->current_entry_bool_val = value;
pCtx->current_entry_bool_val = NULL;
return true;
}
static bool CCJSONStartObjectHandler(void *context)
{
CCJSONContext *pCtx = (CCJSONContext*)context;
pCtx->object_depth++;
if ( (pCtx->object_depth == 1)
&& (pCtx->array_depth == 0))
{
if (pCtx->core_info_cache_list)
return false;
if (!(pCtx->core_info_cache_list = core_info_cache_list_new()))
return false;
}
else if ((pCtx->object_depth == 2)
&& (pCtx->array_depth == 1))
{
if (pCtx->core_info)
{
core_info_free(pCtx->core_info);
free(pCtx->core_info);
pCtx->core_info = NULL;
}
if (!(pCtx->core_info = (core_info_t*)calloc(1, sizeof(core_info_t))))
return false;
/* Assume all cores have 'full' savestate support
* by default */
pCtx->core_info->savestate_support_level =
CORE_INFO_SAVESTATE_DETERMINISTIC;
}
else if ((pCtx->object_depth == 3)
&& (pCtx->array_depth == 2))
{
if (pCtx->to_firmware)
{
size_t new_idx = pCtx->core_info->firmware_count;
core_info_firmware_t *tmp = (core_info_firmware_t*)
realloc(pCtx->core_info->firmware,
(pCtx->core_info->firmware_count + 1)
* sizeof(core_info_firmware_t));
if (!tmp)
return false;
tmp[new_idx].path = NULL;
tmp[new_idx].desc = NULL;
tmp[new_idx].missing = false;
tmp[new_idx].optional = false;
pCtx->core_info->firmware = tmp;
pCtx->core_info->firmware_count++;
}
}
return true;
}
static bool CCJSONEndObjectHandler(void *context)
{
CCJSONContext *pCtx = (CCJSONContext*)context;
if ( (pCtx->object_depth == 2)
&& (pCtx->array_depth == 1)
&& (pCtx->core_info))
{
core_info_cache_add(
pCtx->core_info_cache_list, pCtx->core_info, true);
free(pCtx->core_info);
pCtx->core_info = NULL;
}
else if ((pCtx->object_depth == 3)
&& (pCtx->array_depth == 1))
pCtx->to_core_file_id = false;
pCtx->object_depth--;
return true;
}
static bool CCJSONStartArrayHandler(void *context)
{
CCJSONContext *pCtx = (CCJSONContext*)context;
pCtx->array_depth++;
return true;
}
static bool CCJSONEndArrayHandler(void *context)
{
CCJSONContext *pCtx = (CCJSONContext*)context;
if ((pCtx->object_depth == 2) && (pCtx->array_depth == 2))
pCtx->to_firmware = false;
pCtx->array_depth--;
return true;
}
/* JSON Handlers END */
#endif
/* Note: 'dst' must be zero initialised, or memory
* leaks will occur */
static void core_info_copy(core_info_t *src, core_info_t *dst)
{
dst->path = src->path ? strdup(src->path) : NULL;
dst->display_name = src->display_name ? strdup(src->display_name) : NULL;
dst->display_version = src->display_version ? strdup(src->display_version) : NULL;
dst->core_name = src->core_name ? strdup(src->core_name) : NULL;
dst->system_manufacturer = src->system_manufacturer ? strdup(src->system_manufacturer) : NULL;
dst->systemname = src->systemname ? strdup(src->systemname) : NULL;
dst->system_id = src->system_id ? strdup(src->system_id) : NULL;
dst->supported_extensions = src->supported_extensions ? strdup(src->supported_extensions) : NULL;
dst->authors = src->authors ? strdup(src->authors) : NULL;
dst->permissions = src->permissions ? strdup(src->permissions) : NULL;
dst->licenses = src->licenses ? strdup(src->licenses) : NULL;
dst->categories = src->categories ? strdup(src->categories) : NULL;
dst->databases = src->databases ? strdup(src->databases) : NULL;
dst->notes = src->notes ? strdup(src->notes) : NULL;
dst->required_hw_api = src->required_hw_api ? strdup(src->required_hw_api) : NULL;
dst->description = src->description ? strdup(src->description) : NULL;
dst->categories_list = src->categories_list ? string_list_clone(src->categories_list) : NULL;
dst->databases_list = src->databases_list ? string_list_clone(src->databases_list) : NULL;
dst->note_list = src->note_list ? string_list_clone(src->note_list) : NULL;
dst->supported_extensions_list = src->supported_extensions_list ? string_list_clone(src->supported_extensions_list) : NULL;
dst->authors_list = src->authors_list ? string_list_clone(src->authors_list) : NULL;
dst->permissions_list = src->permissions_list ? string_list_clone(src->permissions_list) : NULL;
dst->licenses_list = src->licenses_list ? string_list_clone(src->licenses_list) : NULL;
dst->required_hw_api_list = src->required_hw_api_list ? string_list_clone(src->required_hw_api_list) : NULL;
if (src->firmware_count > 0)
{
dst->firmware = (core_info_firmware_t*)calloc(src->firmware_count,
sizeof(core_info_firmware_t));
if (dst->firmware)
{
size_t i;
dst->firmware_count = src->firmware_count;
for (i = 0; i < src->firmware_count; i++)
{
dst->firmware[i].path = src->firmware[i].path ? strdup(src->firmware[i].path) : NULL;
dst->firmware[i].desc = src->firmware[i].desc ? strdup(src->firmware[i].desc) : NULL;
dst->firmware[i].missing = src->firmware[i].missing;
dst->firmware[i].optional = src->firmware[i].optional;
}
}
else
dst->firmware_count = 0;
}
dst->core_file_id.str = src->core_file_id.str
? strdup(src->core_file_id.str) : NULL;
dst->core_file_id.hash = src->core_file_id.hash;
dst->savestate_support_level = src->savestate_support_level;
dst->has_info = src->has_info;
dst->supports_no_game = src->supports_no_game;
dst->single_purpose = src->single_purpose;
dst->database_match_archive_member = src->database_match_archive_member;
dst->is_experimental = src->is_experimental;
dst->is_locked = src->is_locked;
dst->is_standalone_exempt = src->is_standalone_exempt;
dst->is_installed = src->is_installed;
}
/* Like core_info_copy, but transfers 'ownership'
* of internal objects/data structures from 'src'
* to 'dst' */
static void core_info_transfer(core_info_t *src, core_info_t *dst)
{
dst->path = src->path;
src->path = NULL;
dst->display_name = src->display_name;
src->display_name = NULL;
dst->display_version = src->display_version;
src->display_version = NULL;
dst->core_name = src->core_name;
src->core_name = NULL;
dst->system_manufacturer = src->system_manufacturer;
src->system_manufacturer = NULL;
dst->systemname = src->systemname;
src->systemname = NULL;
dst->system_id = src->system_id;
src->system_id = NULL;
dst->supported_extensions = src->supported_extensions;
src->supported_extensions = NULL;
dst->authors = src->authors;
src->authors = NULL;
dst->permissions = src->permissions;
src->permissions = NULL;
dst->licenses = src->licenses;
src->licenses = NULL;
dst->categories = src->categories;
src->categories = NULL;
dst->databases = src->databases;
src->databases = NULL;
dst->notes = src->notes;
src->notes = NULL;
dst->required_hw_api = src->required_hw_api;
src->required_hw_api = NULL;
dst->description = src->description;
src->description = NULL;
dst->categories_list = src->categories_list;
src->categories_list = NULL;
dst->databases_list = src->databases_list;
src->databases_list = NULL;
dst->note_list = src->note_list;
src->note_list = NULL;
dst->supported_extensions_list = src->supported_extensions_list;
src->supported_extensions_list = NULL;
dst->authors_list = src->authors_list;
src->authors_list = NULL;
dst->permissions_list = src->permissions_list;
src->permissions_list = NULL;
dst->licenses_list = src->licenses_list;
src->licenses_list = NULL;
dst->required_hw_api_list = src->required_hw_api_list;
src->required_hw_api_list = NULL;
dst->firmware = src->firmware;
dst->firmware_count = src->firmware_count;
src->firmware = NULL;
src->firmware_count = 0;
dst->core_file_id.str = src->core_file_id.str;
src->core_file_id.str = NULL;
dst->core_file_id.hash = src->core_file_id.hash;
dst->savestate_support_level = src->savestate_support_level;
dst->has_info = src->has_info;
dst->supports_no_game = src->supports_no_game;
dst->single_purpose = src->single_purpose;
dst->database_match_archive_member = src->database_match_archive_member;
dst->is_experimental = src->is_experimental;
dst->is_locked = src->is_locked;
dst->is_standalone_exempt = src->is_standalone_exempt;
dst->is_installed = src->is_installed;
}
static void core_info_cache_list_free(
core_info_cache_list_t *core_info_cache_list)
{
size_t i;
if (!core_info_cache_list)
return;
for (i = 0; i < core_info_cache_list->length; i++)
{
core_info_t* info = (core_info_t*)&core_info_cache_list->items[i];
core_info_free(info);
}
free(core_info_cache_list->items);
if (core_info_cache_list->version)
free(core_info_cache_list->version);
free(core_info_cache_list);
}
static core_info_t *core_info_cache_find(
core_info_cache_list_t *list, char *core_file_id)
{
uint32_t hash;
size_t i;
if ( !list
|| string_is_empty(core_file_id))
return NULL;
hash = core_info_hash_string(core_file_id);
for (i = 0; i < list->length; i++)
{
core_info_t *info = (core_info_t*)&list->items[i];
if (!info)
continue;
if ( (info->core_file_id.hash == hash)
&& string_is_equal(info->core_file_id.str, core_file_id))
{
info->is_installed = true;
return info;
}
}
return NULL;
}
static void core_info_cache_add(
core_info_cache_list_t *list, core_info_t *info,
bool transfer)
{
core_info_t *info_cache = NULL;
if ( !list
|| !info
|| (info->core_file_id.hash == 0)
|| string_is_empty(info->core_file_id.str))
return;
if (list->length >= list->capacity)
{
size_t prev_capacity = list->capacity;
core_info_t *items_tmp = (core_info_t*)realloc(list->items,
(list->capacity << 1) * sizeof(core_info_t));
if (!items_tmp)
return;
list->capacity = list->capacity << 1;
list->items = items_tmp;
memset(&list->items[prev_capacity], 0,
(list->capacity - prev_capacity) * sizeof(core_info_t));
}
info_cache = (core_info_t*)&list->items[list->length];
if (transfer)
core_info_transfer(info, info_cache);
else
core_info_copy(info, info_cache);
list->length++;
}
#ifdef HAVE_CORE_INFO_CACHE
static core_info_cache_list_t *core_info_cache_list_new(void)
{
core_info_cache_list_t *core_info_cache_list =
(core_info_cache_list_t *)malloc(sizeof(*core_info_cache_list));
if (!core_info_cache_list)
return NULL;
core_info_cache_list->length = 0;
core_info_cache_list->items = (core_info_t *)
calloc(CORE_INFO_CACHE_DEFAULT_CAPACITY,
sizeof(core_info_t));
if (!core_info_cache_list->items)
{
core_info_cache_list_free(core_info_cache_list);
return NULL;
}
core_info_cache_list->capacity = CORE_INFO_CACHE_DEFAULT_CAPACITY;
core_info_cache_list->refresh = false;
core_info_cache_list->version = NULL;
return core_info_cache_list;
}
static core_info_cache_list_t *core_info_cache_read(const char *info_dir)
{
intfstream_t *file = NULL;
rjson_t *parser = NULL;
CCJSONContext context = {0};
core_info_cache_list_t *core_info_cache_list = NULL;
char file_path[PATH_MAX_LENGTH];
/* Check whether a 'force refresh' file
* is present */
if (string_is_empty(info_dir))
strlcpy(file_path,
FILE_PATH_CORE_INFO_CACHE_REFRESH, sizeof(file_path));
else
fill_pathname_join_special(file_path,
info_dir, FILE_PATH_CORE_INFO_CACHE_REFRESH,
sizeof(file_path));
if (path_is_valid(file_path))
return core_info_cache_list_new();
/* Open info cache file */
if (string_is_empty(info_dir))
strlcpy(file_path, FILE_PATH_CORE_INFO_CACHE, sizeof(file_path));
else
fill_pathname_join_special(file_path, info_dir,
FILE_PATH_CORE_INFO_CACHE,
sizeof(file_path));
#if defined(HAVE_ZLIB)
file = intfstream_open_rzip_file(file_path,
RETRO_VFS_FILE_ACCESS_READ);
#else
file = intfstream_open_file(file_path,
RETRO_VFS_FILE_ACCESS_READ,
RETRO_VFS_FILE_ACCESS_HINT_NONE);
#endif
if (!file)
return core_info_cache_list_new();
/* Parse info cache file */
if (!(parser = rjson_open_stream(file)))
{
RARCH_ERR("[Core Info] Failed to create JSON parser\n");
goto end;
}
rjson_set_options(parser,
RJSON_OPTION_ALLOW_UTF8BOM
| RJSON_OPTION_ALLOW_COMMENTS
| RJSON_OPTION_ALLOW_UNESCAPED_CONTROL_CHARACTERS
| RJSON_OPTION_REPLACE_INVALID_ENCODING);
if (rjson_parse(parser, &context,
CCJSONObjectMemberHandler,
CCJSONStringHandler,
CCJSONNumberHandler,
CCJSONStartObjectHandler,
CCJSONEndObjectHandler,
CCJSONStartArrayHandler,
CCJSONEndArrayHandler,
CCJSONBoolHandler,
NULL) /* Unused null handler */
!= RJSON_DONE)
{
RARCH_WARN("[Core Info] Error parsing chunk:\n---snip---\n%.*s\n---snip---\n",
rjson_get_source_context_len(parser),
rjson_get_source_context_buf(parser));
RARCH_WARN("[Core Info] Error: Invalid JSON at line %d, column %d - %s.\n",
(int)rjson_get_source_line(parser),
(int)rjson_get_source_column(parser),
(*rjson_get_error(parser)
? rjson_get_error(parser)
: "format error"));
/* Info cache is corrupt - discard it */
core_info_cache_list_free(context.core_info_cache_list);
core_info_cache_list = core_info_cache_list_new();
}
else
core_info_cache_list = context.core_info_cache_list;
rjson_free(parser);
/* Clean up leftovers in the event of
* a parsing error */
if (context.core_info)
{
core_info_free(context.core_info);
free(context.core_info);
}
if (!core_info_cache_list)
goto end;
/* If info cache file has the wrong version
* number, discard it */
if ( string_is_empty(core_info_cache_list->version)
|| !string_is_equal(core_info_cache_list->version,
CORE_INFO_CACHE_VERSION))
{
RARCH_WARN("[Core Info] Core info cache has invalid version"
" - forcing refresh (required v%s, found v%s)\n",
CORE_INFO_CACHE_VERSION,
core_info_cache_list->version);
core_info_cache_list_free(context.core_info_cache_list);
core_info_cache_list = core_info_cache_list_new();
}
end:
intfstream_close(file);
free(file);
return core_info_cache_list;
}
#endif
static bool core_info_cache_write(core_info_cache_list_t *list, const char *info_dir)
{
intfstream_t *file = NULL;
rjsonwriter_t *writer = NULL;
bool success = false;
char file_path[PATH_MAX_LENGTH];
size_t i, j;
if (!list)
return false;
/* Open info cache file */
if (string_is_empty(info_dir))
strlcpy(file_path, FILE_PATH_CORE_INFO_CACHE, sizeof(file_path));
else
fill_pathname_join_special(file_path, info_dir,
FILE_PATH_CORE_INFO_CACHE,
sizeof(file_path));
#if defined(CORE_INFO_CACHE_COMPRESS)
file = intfstream_open_rzip_file(file_path,
RETRO_VFS_FILE_ACCESS_WRITE);
#else
file = intfstream_open_file(file_path,
RETRO_VFS_FILE_ACCESS_WRITE,
RETRO_VFS_FILE_ACCESS_HINT_NONE);
#endif
if (!file)
{
RARCH_ERR("[Core Info] Failed to write to core info cache file: %s\n", file_path);
return false;
}
/* Write info cache */
if (!(writer = rjsonwriter_open_stream(file)))
{
RARCH_ERR("[Core Info] Failed to create JSON writer\n");
goto end;
}
#if defined(CORE_INFO_CACHE_COMPRESS)
/* When compressing info cache, human readability
* is not a factor - can skip all indentation
* and new line characters */
rjsonwriter_set_options(writer, RJSONWRITER_OPTION_SKIP_WHITESPACE);
#endif
rjsonwriter_raw(writer, "{", 1);
rjsonwriter_raw(writer, "\n", 1);
rjsonwriter_add_spaces(writer, 2);
rjsonwriter_add_string(writer, "version");
rjsonwriter_raw(writer, ":", 1);
rjsonwriter_raw(writer, " ", 1);
rjsonwriter_add_string(writer, CORE_INFO_CACHE_VERSION);
rjsonwriter_raw(writer, ",", 1);
rjsonwriter_raw(writer, "\n", 1);
rjsonwriter_add_spaces(writer, 2);
rjsonwriter_add_string(writer, "items");
rjsonwriter_raw(writer, ":", 1);
rjsonwriter_raw(writer, " ", 1);
rjsonwriter_raw(writer, "[", 1);
rjsonwriter_raw(writer, "\n", 1);
for (i = 0; i < list->length; i++)
{
core_info_t* info = &list->items[i];
if (!info || !info->is_installed)
continue;
if (i > 0)
{
rjsonwriter_raw(writer, ",", 1);
rjsonwriter_raw(writer, "\n", 1);
}
rjsonwriter_add_spaces(writer, 4);
rjsonwriter_raw(writer, "{", 1);
rjsonwriter_raw(writer, "\n", 1);
rjsonwriter_add_spaces(writer, 6);
rjsonwriter_add_string(writer, "display_name");
rjsonwriter_raw(writer, ":", 1);
rjsonwriter_raw(writer, " ", 1);
rjsonwriter_add_string(writer, info->display_name);
rjsonwriter_raw(writer, ",", 1);
rjsonwriter_raw(writer, "\n", 1);
rjsonwriter_add_spaces(writer, 6);
rjsonwriter_add_string(writer, "display_version");
rjsonwriter_raw(writer, ":", 1);
rjsonwriter_raw(writer, " ", 1);
rjsonwriter_add_string(writer, info->display_version);
rjsonwriter_raw(writer, ",", 1);
rjsonwriter_raw(writer, "\n", 1);
rjsonwriter_add_spaces(writer, 6);
rjsonwriter_add_string(writer, "core_name");
rjsonwriter_raw(writer, ":", 1);
rjsonwriter_raw(writer, " ", 1);
rjsonwriter_add_string(writer, info->core_name);
rjsonwriter_raw(writer, ",", 1);
rjsonwriter_raw(writer, "\n", 1);
rjsonwriter_add_spaces(writer, 6);
rjsonwriter_add_string(writer, "system_manufacturer");
rjsonwriter_raw(writer, ":", 1);
rjsonwriter_raw(writer, " ", 1);
rjsonwriter_add_string(writer, info->system_manufacturer);
rjsonwriter_raw(writer, ",", 1);
rjsonwriter_raw(writer, "\n", 1);
rjsonwriter_add_spaces(writer, 6);
rjsonwriter_add_string(writer, "systemname");
rjsonwriter_raw(writer, ":", 1);
rjsonwriter_raw(writer, " ", 1);
rjsonwriter_add_string(writer, info->systemname);
rjsonwriter_raw(writer, ",", 1);
rjsonwriter_raw(writer, "\n", 1);
rjsonwriter_add_spaces(writer, 6);
rjsonwriter_add_string(writer, "system_id");
rjsonwriter_raw(writer, ":", 1);
rjsonwriter_raw(writer, " ", 1);
rjsonwriter_add_string(writer, info->system_id);
rjsonwriter_raw(writer, ",", 1);
rjsonwriter_raw(writer, "\n", 1);
rjsonwriter_add_spaces(writer, 6);
rjsonwriter_add_string(writer, "supported_extensions");
rjsonwriter_raw(writer, ":", 1);
rjsonwriter_raw(writer, " ", 1);
rjsonwriter_add_string(writer, info->supported_extensions);
rjsonwriter_raw(writer, ",", 1);
rjsonwriter_raw(writer, "\n", 1);
rjsonwriter_add_spaces(writer, 6);
rjsonwriter_add_string(writer, "authors");
rjsonwriter_raw(writer, ":", 1);
rjsonwriter_raw(writer, " ", 1);
rjsonwriter_add_string(writer, info->authors);
rjsonwriter_raw(writer, ",", 1);
rjsonwriter_raw(writer, "\n", 1);
rjsonwriter_add_spaces(writer, 6);
rjsonwriter_add_string(writer, "permissions");
rjsonwriter_raw(writer, ":", 1);
rjsonwriter_raw(writer, " ", 1);
rjsonwriter_add_string(writer, info->permissions);
rjsonwriter_raw(writer, ",", 1);
rjsonwriter_raw(writer, "\n", 1);
rjsonwriter_add_spaces(writer, 6);
rjsonwriter_add_string(writer, "licenses");
rjsonwriter_raw(writer, ":", 1);
rjsonwriter_raw(writer, " ", 1);
rjsonwriter_add_string(writer, info->licenses);
rjsonwriter_raw(writer, ",", 1);
rjsonwriter_raw(writer, "\n", 1);
rjsonwriter_add_spaces(writer, 6);
rjsonwriter_add_string(writer, "categories");
rjsonwriter_raw(writer, ":", 1);
rjsonwriter_raw(writer, " ", 1);
rjsonwriter_add_string(writer, info->categories);
rjsonwriter_raw(writer, ",", 1);
rjsonwriter_raw(writer, "\n", 1);
rjsonwriter_add_spaces(writer, 6);
rjsonwriter_add_string(writer, "databases");
rjsonwriter_raw(writer, ":", 1);
rjsonwriter_raw(writer, " ", 1);
rjsonwriter_add_string(writer, info->databases);
rjsonwriter_raw(writer, ",", 1);
rjsonwriter_raw(writer, "\n", 1);
rjsonwriter_add_spaces(writer, 6);
rjsonwriter_add_string(writer, "notes");
rjsonwriter_raw(writer, ":", 1);
rjsonwriter_raw(writer, " ", 1);
rjsonwriter_add_string(writer, info->notes);
rjsonwriter_raw(writer, ",", 1);
rjsonwriter_raw(writer, "\n", 1);
rjsonwriter_add_spaces(writer, 6);
rjsonwriter_add_string(writer, "required_hw_api");
rjsonwriter_raw(writer, ":", 1);
rjsonwriter_raw(writer, " ", 1);
rjsonwriter_add_string(writer, info->required_hw_api);
rjsonwriter_raw(writer, ",", 1);
rjsonwriter_raw(writer, "\n", 1);
rjsonwriter_add_spaces(writer, 6);
rjsonwriter_add_string(writer, "description");
rjsonwriter_raw(writer, ":", 1);
rjsonwriter_raw(writer, " ", 1);
rjsonwriter_add_string(writer, info->description);
rjsonwriter_raw(writer, ",", 1);
rjsonwriter_raw(writer, "\n", 1);
if (info->firmware_count > 0)
{
rjsonwriter_add_spaces(writer, 6);
rjsonwriter_add_string(writer, "firmware");
rjsonwriter_raw(writer, ":", 1);
rjsonwriter_raw(writer, " ", 1);
rjsonwriter_raw(writer, "[", 1);
rjsonwriter_raw(writer, "\n", 1);
for (j = 0; j < info->firmware_count; j++)
{
rjsonwriter_add_spaces(writer, 8);
rjsonwriter_raw(writer, "{", 1);
rjsonwriter_raw(writer, "\n", 1);
rjsonwriter_add_spaces(writer, 10);
rjsonwriter_add_string(writer, "path");
rjsonwriter_raw(writer, ":", 1);
rjsonwriter_raw(writer, " ", 1);
rjsonwriter_add_string(writer, info->firmware[j].path);
rjsonwriter_raw(writer, ",", 1);
rjsonwriter_raw(writer, "\n", 1);
rjsonwriter_add_spaces(writer, 10);
rjsonwriter_add_string(writer, "desc");
rjsonwriter_raw(writer, ":", 1);
rjsonwriter_raw(writer, " ", 1);
rjsonwriter_add_string(writer, info->firmware[j].desc);
rjsonwriter_raw(writer, ",", 1);
rjsonwriter_raw(writer, "\n", 1);
rjsonwriter_add_spaces(writer, 10);
rjsonwriter_add_string(writer, "optional");
rjsonwriter_raw(writer, ":", 1);
rjsonwriter_raw(writer, " ", 1);
{
bool value = info->firmware[j].optional;
rjsonwriter_raw(writer, (value ? "true" : "false"), (value ? 4 : 5));
}
rjsonwriter_raw(writer, "\n", 1);
rjsonwriter_add_spaces(writer, 8);
rjsonwriter_raw(writer, "}", 1);
if (j < info->firmware_count - 1)
rjsonwriter_raw(writer, ",", 1);
rjsonwriter_raw(writer, "\n", 1);
}
rjsonwriter_add_spaces(writer, 6);
rjsonwriter_raw(writer, "]", 1);
rjsonwriter_raw(writer, ",", 1);
rjsonwriter_raw(writer, "\n", 1);
}
rjsonwriter_add_spaces(writer, 6);
rjsonwriter_add_string(writer, "core_file_id");
rjsonwriter_raw(writer, ":", 1);
rjsonwriter_raw(writer, "\n", 1);
rjsonwriter_add_spaces(writer, 6);
rjsonwriter_raw(writer, "{", 1);
rjsonwriter_raw(writer, "\n", 1);
rjsonwriter_add_spaces(writer, 8);
rjsonwriter_add_string(writer, "str");
rjsonwriter_raw(writer, ":", 1);
rjsonwriter_raw(writer, " ", 1);
rjsonwriter_add_string(writer, info->core_file_id.str);
rjsonwriter_raw(writer, ",", 1);
rjsonwriter_raw(writer, "\n", 1);
rjsonwriter_add_spaces(writer, 8);
rjsonwriter_add_string(writer, "hash");
rjsonwriter_raw(writer, ":", 1);
rjsonwriter_raw(writer, " ", 1);
rjsonwriter_rawf(writer, "%u", info->core_file_id.hash);
rjsonwriter_raw(writer, "\n", 1);
rjsonwriter_add_spaces(writer, 6);
rjsonwriter_raw(writer, "}", 1);
rjsonwriter_raw(writer, ",", 1);
rjsonwriter_raw(writer, "\n", 1);
rjsonwriter_add_spaces(writer, 6);
rjsonwriter_add_string(writer, "firmware_count");
rjsonwriter_raw(writer, ":", 1);
rjsonwriter_raw(writer, " ", 1);
rjsonwriter_rawf(writer, "%u", info->firmware_count);
rjsonwriter_raw(writer, ",", 1);
rjsonwriter_raw(writer, "\n", 1);
rjsonwriter_add_spaces(writer, 6);
rjsonwriter_add_string(writer, "savestate_support_level");
rjsonwriter_raw(writer, ":", 1);
rjsonwriter_raw(writer, " ", 1);
rjsonwriter_rawf(writer, "%u", info->savestate_support_level);
rjsonwriter_raw(writer, ",", 1);
rjsonwriter_raw(writer, "\n", 1);
rjsonwriter_add_spaces(writer, 6);
rjsonwriter_add_string(writer, "has_info");
rjsonwriter_raw(writer, ":", 1);
rjsonwriter_raw(writer, " ", 1);
{
bool value = info->has_info;
rjsonwriter_raw(writer, (value ? "true" : "false"), (value ? 4 : 5));
}
rjsonwriter_raw(writer, ",", 1);
rjsonwriter_raw(writer, "\n", 1);
rjsonwriter_add_spaces(writer, 6);
rjsonwriter_add_string(writer, "supports_no_game");
rjsonwriter_raw(writer, ":", 1);
rjsonwriter_raw(writer, " ", 1);
{
bool value = info->supports_no_game;
rjsonwriter_raw(writer, (value ? "true" : "false"), (value ? 4 : 5));
}
rjsonwriter_raw(writer, ",", 1);
rjsonwriter_raw(writer, "\n", 1);
rjsonwriter_add_spaces(writer, 6);
rjsonwriter_add_string(writer, "single_purpose");
rjsonwriter_raw(writer, ":", 1);
rjsonwriter_raw(writer, " ", 1);
{
bool value = info->single_purpose;
rjsonwriter_raw(writer, (value ? "true" : "false"), (value ? 4 : 5));
}
rjsonwriter_raw(writer, ",", 1);
rjsonwriter_raw(writer, "\n", 1);
rjsonwriter_add_spaces(writer, 6);
rjsonwriter_add_string(writer, "database_match_archive_member");
rjsonwriter_raw(writer, ":", 1);
rjsonwriter_raw(writer, " ", 1);
{
bool value = info->database_match_archive_member;
rjsonwriter_raw(writer, (value ? "true" : "false"), (value ? 4 : 5));
}
rjsonwriter_raw(writer, ",", 1);
rjsonwriter_raw(writer, "\n", 1);
rjsonwriter_add_spaces(writer, 6);
rjsonwriter_add_string(writer, "is_experimental");
rjsonwriter_raw(writer, ":", 1);
rjsonwriter_raw(writer, " ", 1);
{
bool value = info->is_experimental;
rjsonwriter_raw(writer, (value ? "true" : "false"), (value ? 4 : 5));
}
rjsonwriter_raw(writer, "\n", 1);
rjsonwriter_add_spaces(writer, 4);
rjsonwriter_raw(writer, "}", 1);
}
rjsonwriter_raw(writer, "\n", 1);
rjsonwriter_add_spaces(writer, 2);
rjsonwriter_raw(writer, "]", 1);
rjsonwriter_raw(writer, "\n", 1);
rjsonwriter_raw(writer, "}", 1);
rjsonwriter_raw(writer, "\n", 1);
rjsonwriter_free(writer);
RARCH_LOG("[Core Info] Wrote to cache file: %s\n", file_path);
success = true;
/* Remove 'force refresh' file, if required */
if (string_is_empty(info_dir))
strlcpy(file_path,
FILE_PATH_CORE_INFO_CACHE_REFRESH, sizeof(file_path));
else
fill_pathname_join_special(file_path,
info_dir, FILE_PATH_CORE_INFO_CACHE_REFRESH,
sizeof(file_path));
if (path_is_valid(file_path))
filestream_delete(file_path);
end:
intfstream_close(file);
free(file);
list->refresh = false;
return success;
}
static void core_info_check_uninstalled(core_info_cache_list_t *list)
{
size_t i;
if (!list)
return;
for (i = 0; i < list->length; i++)
{
core_info_t *info = (core_info_t *)&list->items[i];
if (!info)
continue;
if (!info->is_installed)
{
list->refresh = true;
return;
}
}
}
/* When called, generates a temporary file
* that will force an info cache refresh the
* next time that core info is initialised with
* caching enabled */
bool core_info_cache_force_refresh(const char *path_info)
{
char file_path[PATH_MAX_LENGTH];
/* Get 'force refresh' file path */
if (string_is_empty(path_info))
strlcpy(file_path,
FILE_PATH_CORE_INFO_CACHE_REFRESH, sizeof(file_path));
else
fill_pathname_join_special(file_path,
path_info, FILE_PATH_CORE_INFO_CACHE_REFRESH,
sizeof(file_path));
/* Generate a new, empty 'force refresh' file,
* if required */
if (!path_is_valid(file_path))
{
RFILE *refresh_file = filestream_open(
file_path,
RETRO_VFS_FILE_ACCESS_WRITE,
RETRO_VFS_FILE_ACCESS_HINT_NONE);
if (!refresh_file)
return false;
/* We have to write something - just output
* a single character */
if (filestream_putc(refresh_file, 0) != 0)
{
filestream_close(refresh_file);
return false;
}
filestream_close(refresh_file);
}
return true;
}
/***********************/
/* Core Info Cache END */
/***********************/
typedef struct
{
const char *path;
const char *filename;
} core_file_path_t;
typedef struct
{
core_file_path_t *list;
size_t size;
} core_file_path_list_t;
typedef struct
{
const char *filename;
uint32_t hash;
} core_aux_file_path_t;
typedef struct
{
core_aux_file_path_t *list;
size_t size;
} core_aux_file_path_list_t;
typedef struct
{
struct string_list *dir_list;
core_file_path_list_t *core_list;
core_aux_file_path_list_t *lock_list;
core_aux_file_path_list_t *standalone_exempt_list;
} core_path_list_t;
static uint32_t core_info_hash_string(const char *str)
{
unsigned char c;
uint32_t hash = (uint32_t)0x811c9dc5;
while ((c = (unsigned char)*(str++)) != '\0')
hash = ((hash * (uint32_t)0x01000193) ^ (uint32_t)c);
return (hash ? hash : 1);
}
static void core_info_path_list_free(core_path_list_t *path_list)
{
if (!path_list)
return;
if (path_list->core_list)
{
if (path_list->core_list->list)
free(path_list->core_list->list);
free(path_list->core_list);
}
if (path_list->lock_list)
{
if (path_list->lock_list->list)
free(path_list->lock_list->list);
free(path_list->lock_list);
}
if (path_list->standalone_exempt_list)
{
if (path_list->standalone_exempt_list->list)
free(path_list->standalone_exempt_list->list);
free(path_list->standalone_exempt_list);
}
if (path_list->dir_list)
string_list_free(path_list->dir_list);
free(path_list);
}
static core_path_list_t *core_info_path_list_new(const char *core_dir,
const char *core_exts, bool show_hidden_files)
{
size_t i, _len;
char exts[32];
core_path_list_t *path_list = NULL;
struct string_list *core_ext_list = NULL;
bool dir_list_ok = false;
if (string_is_empty(core_exts))
return NULL;
if (!(path_list = (core_path_list_t*)calloc(1, sizeof(*path_list))))
return NULL;
if (!(core_ext_list = string_split(core_exts, "|")))
{
core_info_path_list_free(path_list);
return NULL;
}
/* Allocate list containers */
path_list->dir_list = string_list_new();
path_list->core_list = (core_file_path_list_t*)
calloc(1, sizeof(*path_list->core_list));
path_list->lock_list = (core_aux_file_path_list_t*)
calloc(1, sizeof(*path_list->lock_list));
path_list->standalone_exempt_list = (core_aux_file_path_list_t*)
calloc(1, sizeof(*path_list->standalone_exempt_list));
if ( !path_list->dir_list
|| !path_list->core_list
|| !path_list->lock_list
|| !path_list->standalone_exempt_list)
goto error;
/* Get list of file extensions to include
* > core + lock */
_len = strlcpy(exts, core_exts, sizeof(exts));
#if defined(HAVE_DYNAMIC)
/* > 'standalone exempt' */
strlcpy(exts + _len, "|lck|lsae", sizeof(exts) - _len);
#else
strlcpy(exts + _len, "|lck", sizeof(exts) - _len);
#endif
/* Fetch core directory listing */
dir_list_ok = dir_list_append(path_list->dir_list,
core_dir, exts, false, show_hidden_files,
false, false);
#if defined(__WINRT__) || defined(WINAPI_FAMILY) && WINAPI_FAMILY == WINAPI_FAMILY_PHONE_APP
{
/* UWP: browse the optional packages for additional cores */
struct string_list core_packages = {0};
if (string_list_initialize(&core_packages))
{
uwp_fill_installed_core_packages(&core_packages);
for (i = 0; i < core_packages.size; i++)
dir_list_append(path_list->dir_list,
core_packages.elems[i].data, exts, false,
show_hidden_files, false, false);
string_list_deinitialize(&core_packages);
}
}
#else
/* Keep the old 'directory not found' behaviour */
if (!dir_list_ok)
goto error;
#endif
/* Allocate sub lists */
path_list->core_list->list = (core_file_path_t*)
malloc(path_list->dir_list->size *
sizeof(*path_list->core_list->list));
path_list->lock_list->list = (core_aux_file_path_t*)
malloc(path_list->dir_list->size *
sizeof(*path_list->lock_list->list));
path_list->standalone_exempt_list->list = (core_aux_file_path_t*)
malloc(path_list->dir_list->size *
sizeof(*path_list->standalone_exempt_list->list));
if ( !path_list->core_list->list
|| !path_list->lock_list->list
|| !path_list->standalone_exempt_list->list)
goto error;
/* Parse directory listing */
for (i = 0; i < path_list->dir_list->size; i++)
{
const char *file_path = path_list->dir_list->elems[i].data;
const char *filename = NULL;
const char *file_ext = NULL;
if ( string_is_empty(file_path)
|| !(filename = path_basename_nocompression(file_path))
|| !(file_ext = path_get_extension(filename)))
continue;
/* Check whether this is a core, lock or
* 'standalone exempt' file */
if (string_list_find_elem(core_ext_list, file_ext))
{
path_list->core_list->list[
path_list->core_list->size].path = file_path;
path_list->core_list->list[
path_list->core_list->size].filename = filename;
path_list->core_list->size++;
}
else if (string_is_equal(file_ext, FILE_PATH_LOCK_EXTENSION_NO_DOT))
{
path_list->lock_list->list[
path_list->lock_list->size].filename = filename;
path_list->lock_list->list[
path_list->lock_list->size].hash = core_info_hash_string(filename);
path_list->lock_list->size++;
}
#if defined(HAVE_DYNAMIC)
else if (string_is_equal(file_ext, FILE_PATH_STANDALONE_EXEMPT_EXTENSION_NO_DOT))
{
path_list->standalone_exempt_list->list[
path_list->standalone_exempt_list->size].filename = filename;
path_list->standalone_exempt_list->list[
path_list->standalone_exempt_list->size].hash = core_info_hash_string(filename);
path_list->standalone_exempt_list->size++;
}
#endif
}
string_list_free(core_ext_list);
return path_list;
error:
string_list_free(core_ext_list);
core_info_path_list_free(path_list);
return NULL;
}
static bool core_info_path_is_locked(
core_aux_file_path_list_t *lock_list,
const char *core_file_name)
{
size_t i, len;
uint32_t hash;
char lock_filename[NAME_MAX_LENGTH];
if (lock_list->size < 1)
return false;
len = strlcpy(lock_filename, core_file_name,
sizeof(lock_filename));
strlcpy(lock_filename + len,
".lck",
sizeof(lock_filename) - len);
hash = core_info_hash_string(lock_filename);
for (i = 0; i < lock_list->size; i++)
{
core_aux_file_path_t *lock_file = &lock_list->list[i];
if ( (lock_file->hash == hash)
&& string_is_equal(lock_file->filename, lock_filename))
return true;
}
return false;
}
static bool core_info_path_is_standalone_exempt(
core_aux_file_path_list_t *exempt_list,
const char *core_file_name)
{
size_t i, len;
uint32_t hash;
char exempt_filename[NAME_MAX_LENGTH];
if (exempt_list->size < 1)
return false;
len = strlcpy(exempt_filename, core_file_name,
sizeof(exempt_filename));
strlcpy(exempt_filename + len,
".lsae",
sizeof(exempt_filename) - len);
hash = core_info_hash_string(exempt_filename);
for (i = 0; i < exempt_list->size; i++)
{
core_aux_file_path_t *exempt_file = &exempt_list->list[i];
if ( (exempt_file->hash == hash)
&& string_is_equal(exempt_file->filename, exempt_filename))
return true;
}
return false;
}
static bool core_info_get_file_id(const char *core_filename,
char *core_file_id, size_t len)
{
char *last_underscore = NULL;
if (string_is_empty(core_filename))
return false;
/* Core file 'id' is filename without extension
* or platform-specific suffix */
/* > Remove extension */
strlcpy(core_file_id, core_filename, len);
path_remove_extension(core_file_id);
/* > Remove suffix */
last_underscore = (char*)strrchr(core_file_id, '_');
if ( !string_is_empty(last_underscore)
&& !string_is_equal(last_underscore, "_libretro"))
*last_underscore = '\0';
return !string_is_empty(core_file_id);
}
static core_info_t *core_info_find_internal(
core_info_list_t *list,
const char *core_path)
{
size_t i;
uint32_t hash;
char core_file_id[256];
if ( !list
|| string_is_empty(core_path)
|| !core_info_get_file_id(path_basename_nocompression(core_path),
core_file_id, sizeof(core_file_id)))
return NULL;
hash = core_info_hash_string(core_file_id);
for (i = 0; i < list->count; i++)
{
core_info_t *info = &list->list[i];
if ( (info->core_file_id.hash == hash)
&& string_is_equal(info->core_file_id.str, core_file_id))
return info;
}
return NULL;
}
static void core_info_resolve_firmware(
core_info_t *info, config_file_t *conf)
{
unsigned i;
size_t _len;
char prefix[12];
unsigned firmware_count = 0;
core_info_firmware_t *firmware = NULL;
if (!config_get_uint(conf, "firmware_count", &firmware_count))
return;
firmware = (core_info_firmware_t*)calloc(
firmware_count, sizeof(*firmware));
if (!firmware)
return;
_len = strlcpy(prefix, "firmware", sizeof(prefix));
for (i = 0; i < firmware_count; i++)
{
size_t _len2;
char key[64];
struct config_entry_list *entry = NULL;
bool tmp_bool = false;
snprintf(prefix + _len, sizeof(prefix) - _len, "%u_", i);
_len2 = strlcpy(key, prefix, sizeof(key));
strlcpy(key + _len2, "opt", sizeof(key) - _len2);
if (config_get_bool(conf, key, &tmp_bool))
firmware[i].optional = tmp_bool;
strlcpy(key + _len2, "path", sizeof(key) - _len2);
entry = config_get_entry(conf, key);
if (entry && !string_is_empty(entry->value))
{
firmware[i].path = entry->value;
entry->value = NULL;
}
strlcpy(key + _len2, "desc", sizeof(key) - _len2);
entry = config_get_entry(conf, key);
if (entry && !string_is_empty(entry->value))
{
firmware[i].desc = entry->value;
entry->value = NULL;
}
}
info->firmware_count = firmware_count;
info->firmware = firmware;
}
static config_file_t *core_info_get_config_file(
const char *core_file_id, const char *info_dir)
{
if (!string_is_empty(info_dir))
{
char info_path[PATH_MAX_LENGTH];
fill_pathname_join_special(info_path, info_dir,
core_file_id, sizeof(info_path));
return config_file_new_from_path_to_string(info_path);
}
return config_file_new_from_path_to_string(core_file_id);
}
static void core_info_parse_config_file(
core_info_list_t *list, core_info_t *info,
config_file_t *conf)
{
bool tmp_bool = false;
struct config_entry_list *entry = config_get_entry(conf, "display_name");
if (entry && !string_is_empty(entry->value))
{
info->display_name = entry->value;
entry->value = NULL;
}
entry = config_get_entry(conf, "display_version");
if (entry && !string_is_empty(entry->value))
{
info->display_version = entry->value;
entry->value = NULL;
}
entry = config_get_entry(conf, "corename");
if (entry && !string_is_empty(entry->value))
{
info->core_name = entry->value;
entry->value = NULL;
}
entry = config_get_entry(conf, "systemname");
if (entry && !string_is_empty(entry->value))
{
info->systemname = entry->value;
entry->value = NULL;
}
entry = config_get_entry(conf, "systemid");
if (entry && !string_is_empty(entry->value))
{
info->system_id = entry->value;
entry->value = NULL;
}
entry = config_get_entry(conf, "manufacturer");
if (entry && !string_is_empty(entry->value))
{
info->system_manufacturer = entry->value;
entry->value = NULL;
}
entry = config_get_entry(conf, "supported_extensions");
if (entry && !string_is_empty(entry->value))
{
info->supported_extensions = entry->value;
entry->value = NULL;
info->supported_extensions_list =
string_split(info->supported_extensions, "|");
}
entry = config_get_entry(conf, "authors");
if (entry && !string_is_empty(entry->value))
{
info->authors = entry->value;
entry->value = NULL;
info->authors_list =
string_split(info->authors, "|");
}
entry = config_get_entry(conf, "permissions");
if (entry && !string_is_empty(entry->value))
{
info->permissions = entry->value;
entry->value = NULL;
info->permissions_list =
string_split(info->permissions, "|");
}
entry = config_get_entry(conf, "license");
if (entry && !string_is_empty(entry->value))
{
info->licenses = entry->value;
entry->value = NULL;
info->licenses_list =
string_split(info->licenses, "|");
}
entry = config_get_entry(conf, "categories");
if (entry && !string_is_empty(entry->value))
{
info->categories = entry->value;
entry->value = NULL;
info->categories_list =
string_split(info->categories, "|");
}
entry = config_get_entry(conf, "database");
if (entry && !string_is_empty(entry->value))
{
info->databases = entry->value;
entry->value = NULL;
info->databases_list =
string_split(info->databases, "|");
}
entry = config_get_entry(conf, "notes");
if (entry && !string_is_empty(entry->value))
{
info->notes = entry->value;
entry->value = NULL;
info->note_list =
string_split(info->notes, "|");
}
entry = config_get_entry(conf, "required_hw_api");
if (entry && !string_is_empty(entry->value))
{
info->required_hw_api = entry->value;
entry->value = NULL;
info->required_hw_api_list =
string_split(info->required_hw_api, "|");
}
entry = config_get_entry(conf, "description");
if (entry && !string_is_empty(entry->value))
{
info->description = entry->value;
entry->value = NULL;
}
if (config_get_bool(conf, "supports_no_game",
&tmp_bool))
info->supports_no_game = tmp_bool;
if (config_get_bool(conf, "single_purpose",
&tmp_bool))
info->single_purpose = tmp_bool;
if (config_get_bool(conf, "database_match_archive_member",
&tmp_bool))
info->database_match_archive_member = tmp_bool;
if (config_get_bool(conf, "is_experimental",
&tmp_bool))
info->is_experimental = tmp_bool;
/* Savestate support level is slightly more complex,
* since it is a value derived from two configuration
* parameters */
/* > Assume all cores have 'full' savestate support
* by default */
info->savestate_support_level =
CORE_INFO_SAVESTATE_DETERMINISTIC;
/* > Check whether savestate functionality is defined
* in the info file */
if (config_get_bool(conf, "savestate", &tmp_bool))
{
if (tmp_bool)
{
/* Check if savestate features are defined */
entry = config_get_entry(conf, "savestate_features");
if (entry && !string_is_empty(entry->value))
{
if (string_is_equal(entry->value, "basic"))
info->savestate_support_level =
CORE_INFO_SAVESTATE_BASIC;
else if (string_is_equal(entry->value, "serialized"))
info->savestate_support_level =
CORE_INFO_SAVESTATE_SERIALIZED;
}
}
else
info->savestate_support_level =
CORE_INFO_SAVESTATE_DISABLED;
}
core_info_resolve_firmware(info, conf);
info->has_info = true;
list->info_count++;
}
static void core_info_list_resolve_all_extensions(
core_info_list_t *core_info_list)
{
size_t i = 0;
size_t all_ext_len = 0;
char *all_ext = NULL;
for (i = 0; i < core_info_list->count; i++)
{
if (core_info_list->list[i].supported_extensions)
all_ext_len +=
(strlen(core_info_list->list[i].supported_extensions) + 2);
}
all_ext_len += STRLEN_CONST("7z|") + STRLEN_CONST("zip|");
if (!(all_ext = (char*)calloc(1, all_ext_len)))
return;
core_info_list->all_ext = all_ext;
for (i = 0; i < core_info_list->count; i++)
{
if (!core_info_list->list[i].supported_extensions)
continue;
strlcat(core_info_list->all_ext,
core_info_list->list[i].supported_extensions, all_ext_len);
strlcat(core_info_list->all_ext, "|", all_ext_len);
}
#ifdef HAVE_7ZIP
strlcat(core_info_list->all_ext, "7z|", all_ext_len);
#endif
#ifdef HAVE_ZLIB
strlcat(core_info_list->all_ext, "zip|", all_ext_len);
#endif
}
static void core_info_free(core_info_t* info)
{
size_t i;
free(info->path);
free(info->core_name);
free(info->systemname);
free(info->system_id);
free(info->system_manufacturer);
free(info->display_name);
free(info->display_version);
free(info->supported_extensions);
free(info->authors);
free(info->permissions);
free(info->licenses);
free(info->categories);
free(info->databases);
free(info->notes);
free(info->required_hw_api);
free(info->description);
string_list_free(info->supported_extensions_list);
string_list_free(info->authors_list);
string_list_free(info->note_list);
string_list_free(info->permissions_list);
string_list_free(info->licenses_list);
string_list_free(info->categories_list);
string_list_free(info->databases_list);
string_list_free(info->required_hw_api_list);
for (i = 0; i < info->firmware_count; i++)
{
if (info->firmware[i].path)
free(info->firmware[i].path);
if (info->firmware[i].desc)
free(info->firmware[i].desc);
info->firmware[i].path = NULL;
info->firmware[i].desc = NULL;
}
free(info->firmware);
free(info->core_file_id.str);
}
static void core_info_list_free(core_info_list_t *core_info_list)
{
size_t i;
if (!core_info_list)
return;
for (i = 0; i < core_info_list->count; i++)
{
core_info_t *info = (core_info_t*)&core_info_list->list[i];
core_info_free(info);
}
free(core_info_list->all_ext);
free(core_info_list->list);
free(core_info_list);
}
static core_info_list_t *core_info_list_new(const char *path,
const char *libretro_info_dir,
const char *exts,
bool dir_show_hidden_files,
bool enable_cache,
bool *cache_supported)
{
size_t i;
core_info_t *core_info = NULL;
core_info_list_t *core_info_list = NULL;
core_info_cache_list_t *core_info_cache_list = NULL;
const char *info_dir = libretro_info_dir;
core_path_list_t *path_list = core_info_path_list_new(
path, exts, dir_show_hidden_files);
if (!path_list)
goto error;
if (!(core_info_list = (core_info_list_t*)malloc(sizeof(*core_info_list))))
goto error;
core_info_list->list = NULL;
core_info_list->count = 0;
core_info_list->info_count = 0;
core_info_list->all_ext = NULL;
if (!(core_info = (core_info_t*)calloc(path_list->core_list->size,
sizeof(*core_info))))
{
core_info_list_free(core_info_list);
goto error;
}
core_info_list->list = core_info;
core_info_list->count = path_list->core_list->size;
#ifdef HAVE_CORE_INFO_CACHE
/* Read core info cache, if enabled */
if (enable_cache)
{
core_info_cache_list = core_info_cache_read(info_dir);
if (!core_info_cache_list)
goto error;
}
#endif
for (i = 0; i < path_list->core_list->size; i++)
{
core_info_t *info = &core_info[i];
core_file_path_t *core_file = &path_list->core_list->list[i];
const char *base_path = core_file->path;
const char *core_filename = core_file->filename;
config_file_t *conf = NULL;
char core_file_id[256];
if (!core_info_get_file_id(core_filename, core_file_id,
sizeof(core_file_id)))
continue;
/* If info cache is available, search for
* current core */
if (core_info_cache_list)
{
core_info_t *info_cache = core_info_cache_find(
core_info_cache_list, core_file_id);
if (info_cache)
{
core_info_copy(info_cache, info);
/* Core path is 'dynamic', and cannot
* be cached (i.e. core directory may
* change between runs) */
if (info->path)
free(info->path);
info->path = strdup(base_path);
/* Core lock status is 'dynamic', and
* cannot be cached */
info->is_locked = core_info_path_is_locked(
path_list->lock_list, core_filename);
/* Core 'standalone exempt' status is 'dynamic',
* and cannot be cached
* > It is also dependent upon whether the core
* supports contentless operation */
info->is_standalone_exempt = info->supports_no_game &&
core_info_path_is_standalone_exempt(
path_list->standalone_exempt_list,
core_filename);
/* 'info_count' is normally incremented inside
* core_info_parse_config_file(). If core entry
* is cached, must instead increment the value
* here */
if (info->has_info)
core_info_list->info_count++;
continue;
}
}
/* Cache core path */
info->path = strdup(base_path);
/* Get core lock status */
info->is_locked = core_info_path_is_locked(
path_list->lock_list, core_filename);
/* Cache core file 'id' */
info->core_file_id.str = strdup(core_file_id);
info->core_file_id.hash = core_info_hash_string(core_file_id);
strlcat(core_file_id, ".info", sizeof(core_file_id));
/* Parse core info file */
if ((conf = core_info_get_config_file(core_file_id, info_dir)))
{
core_info_parse_config_file(core_info_list, info, conf);
config_file_free(conf);
}
/* Get fallback display name, if required */
if (!info->display_name)
info->display_name = strdup(core_filename);
/* Get core 'standalone exempt' status */
info->is_standalone_exempt = info->supports_no_game &&
core_info_path_is_standalone_exempt(
path_list->standalone_exempt_list,
core_filename);
info->is_installed = true;
/* If info cache is enabled and we reach this
* point, current core is uncached
* > Add it to the list, and trigger a cache
* refresh */
if (core_info_cache_list)
{
core_info_cache_add(core_info_cache_list, info, false);
core_info_cache_list->refresh = true;
}
}
core_info_list_resolve_all_extensions(core_info_list);
/* If info cache is enabled
* > Check whether any cached cores have been
* uninstalled since the last run (triggers
* a refresh)
* > Write new cache to disk if updates are
* required */
*cache_supported = true;
if (core_info_cache_list)
{
core_info_check_uninstalled(core_info_cache_list);
if (core_info_cache_list->refresh)
*cache_supported = core_info_cache_write(
core_info_cache_list, info_dir);
core_info_cache_list_free(core_info_cache_list);
}
core_info_path_list_free(path_list);
return core_info_list;
error:
core_info_path_list_free(path_list);
return NULL;
}
/* Shallow-copies internal state.
*
* Data in *info is invalidated when the
* core_info_list is freed. */
bool core_info_list_get_info(core_info_list_t *core_info_list,
core_info_t *out_info, const char *core_path)
{
if (out_info)
{
core_info_t *info = core_info_find_internal(
core_info_list, core_path);
memset(out_info, 0, sizeof(*out_info));
if (info)
{
*out_info = *info;
return true;
}
}
return false;
}
#ifdef HAVE_COMPRESSION
static bool core_info_does_support_any_file(const core_info_t *core,
const struct string_list *list)
{
size_t i;
if (!list || !core || !core->supported_extensions_list)
return false;
for (i = 0; i < list->size; i++)
if (string_list_find_elem_prefix(core->supported_extensions_list,
".", path_get_extension(list->elems[i].data)))
return true;
return false;
}
#endif
static bool core_info_does_support_file(
const core_info_t *core, const char *path)
{
if (!core || !core->supported_extensions_list)
return false;
if (string_is_empty(path))
return false;
return string_list_find_elem_prefix(
core->supported_extensions_list, ".", path_get_extension(path));
}
/* qsort_r() is not in standard C, sadly. */
static int core_info_qsort_cmp(const void *a_, const void *b_)
{
core_info_state_t *p_coreinfo = &core_info_st;
const core_info_t *a = (const core_info_t*)a_;
const core_info_t *b = (const core_info_t*)b_;
int support_a = core_info_does_support_file(a,
p_coreinfo->tmp_path);
int support_b = core_info_does_support_file(b,
p_coreinfo->tmp_path);
#ifdef HAVE_COMPRESSION
support_a = support_a ||
core_info_does_support_any_file(a, p_coreinfo->tmp_list);
support_b = support_b ||
core_info_does_support_any_file(b, p_coreinfo->tmp_list);
#endif
if (support_a != support_b)
return support_b - support_a;
return strcasecmp(a->display_name, b->display_name);
}
static bool core_info_list_update_missing_firmware_internal(
core_info_list_t *core_info_list,
const char *core_path,
const char *systemdir,
bool *set_missing_bios)
{
size_t i;
char path[PATH_MAX_LENGTH];
core_info_t *info = NULL;
if (!core_info_list)
return false;
if (!(info = core_info_find_internal(
core_info_list, core_path)))
return false;
for (i = 0; i < info->firmware_count; i++)
{
if (string_is_empty(info->firmware[i].path))
continue;
fill_pathname_join(path, systemdir,
info->firmware[i].path, sizeof(path));
info->firmware[i].missing = !path_is_valid(path);
if (info->firmware[i].missing && !info->firmware[i].optional)
*set_missing_bios = true;
}
return true;
}
void core_info_free_current_core(void)
{
core_info_state_t *p_coreinfo = &core_info_st;
if (p_coreinfo->current)
free(p_coreinfo->current);
p_coreinfo->current = NULL;
}
bool core_info_init_current_core(void)
{
core_info_state_t *p_coreinfo = &core_info_st;
core_info_t *current = (core_info_t*)
malloc(sizeof(*current));
if (!current)
return false;
current->has_info = false;
current->supports_no_game = false;
current->single_purpose = false;
current->database_match_archive_member = false;
current->is_experimental = false;
current->is_locked = false;
current->is_standalone_exempt = false;
current->is_installed = false;
current->firmware_count = 0;
current->savestate_support_level = CORE_INFO_SAVESTATE_DETERMINISTIC;
current->path = NULL;
current->display_name = NULL;
current->display_version = NULL;
current->core_name = NULL;
current->system_manufacturer = NULL;
current->systemname = NULL;
current->system_id = NULL;
current->supported_extensions = NULL;
current->authors = NULL;
current->permissions = NULL;
current->licenses = NULL;
current->categories = NULL;
current->databases = NULL;
current->notes = NULL;
current->required_hw_api = NULL;
current->description = NULL;
current->categories_list = NULL;
current->databases_list = NULL;
current->note_list = NULL;
current->supported_extensions_list = NULL;
current->authors_list = NULL;
current->permissions_list = NULL;
current->licenses_list = NULL;
current->required_hw_api_list = NULL;
current->firmware = NULL;
current->core_file_id.str = NULL;
current->core_file_id.hash = 0;
p_coreinfo->current = current;
return true;
}
bool core_info_get_current_core(core_info_t **core)
{
core_info_state_t *p_coreinfo = &core_info_st;
if (!core)
return false;
*core = p_coreinfo->current;
return true;
}
void core_info_deinit_list(void)
{
core_info_state_t *p_coreinfo = &core_info_st;
if (p_coreinfo->curr_list)
core_info_list_free(p_coreinfo->curr_list);
p_coreinfo->curr_list = NULL;
}
bool core_info_init_list(
const char *path_info, const char *dir_cores,
const char *exts, bool dir_show_hidden_files,
bool enable_cache, bool *cache_supported)
{
core_info_state_t *p_coreinfo = &core_info_st;
if (!(p_coreinfo->curr_list = core_info_list_new(
dir_cores,
!string_is_empty(path_info)
? path_info
: dir_cores,
exts,
dir_show_hidden_files,
enable_cache,
cache_supported)))
return false;
return true;
}
bool core_info_get_list(core_info_list_t **core)
{
core_info_state_t *p_coreinfo = &core_info_st;
if (!core)
return false;
*core = p_coreinfo->curr_list;
return true;
}
/* Returns number of installed cores */
size_t core_info_count(void)
{
core_info_state_t *p_coreinfo = &core_info_st;
if (p_coreinfo && p_coreinfo->curr_list)
return p_coreinfo->curr_list->count;
return 0;
}
bool core_info_list_update_missing_firmware(
core_info_ctx_firmware_t *info, bool *set_missing_bios)
{
core_info_state_t *p_coreinfo = &core_info_st;
if (info)
return core_info_list_update_missing_firmware_internal(
p_coreinfo->curr_list,
info->path, info->directory.system,
set_missing_bios);
return false;
}
bool core_info_load(const char *core_path)
{
core_info_state_t *p_coreinfo = &core_info_st;
core_info_t *core_info = NULL;
if (!p_coreinfo->current)
core_info_init_current_core();
core_info_get_current_core(&core_info);
if (!p_coreinfo->curr_list)
return false;
if (!core_info_list_get_info(p_coreinfo->curr_list,
core_info, core_path))
return false;
return true;
}
bool core_info_find(const char *core_path,
core_info_t **core_info)
{
core_info_state_t *p_coreinfo = &core_info_st;
core_info_t *info = NULL;
if (!core_info || !p_coreinfo->curr_list)
return false;
if (!(info = core_info_find_internal(p_coreinfo->curr_list, core_path)))
return false;
*core_info = info;
return true;
}
core_info_t *core_info_get(core_info_list_t *list, size_t i)
{
core_info_t *info = NULL;
if (!list || (i >= list->count))
return NULL;
info = (core_info_t*)&list->list[i];
if (!info || !info->path)
return NULL;
return info;
}
void core_info_list_get_supported_cores(core_info_list_t *core_info_list,
const char *path, const core_info_t **infos, size_t *num_infos)
{
size_t i;
size_t supported = 0;
#ifdef HAVE_COMPRESSION
struct string_list *list = NULL;
#endif
core_info_state_t *p_coreinfo = &core_info_st;
if (!core_info_list)
return;
p_coreinfo->tmp_path = path;
#ifdef HAVE_COMPRESSION
if (path_is_compressed_file(path))
list = file_archive_get_file_list(path, NULL);
p_coreinfo->tmp_list = list;
#endif
/* Let supported core come first in list so we can return
* a pointer to them. */
qsort(core_info_list->list, core_info_list->count,
sizeof(core_info_t), core_info_qsort_cmp);
for (i = 0; i < core_info_list->count; i++, supported++)
{
const core_info_t *core = &core_info_list->list[i];
if (core_info_does_support_file(core, path))
continue;
#ifdef HAVE_COMPRESSION
if (core_info_does_support_any_file(core, list))
continue;
#endif
break;
}
#ifdef HAVE_COMPRESSION
if (list)
string_list_free(list);
#endif
*infos = core_info_list->list;
*num_infos = supported;
}
/*
* Matches core A and B file IDs
*
* e.g.:
* snes9x_libretro.dll and snes9x_libretro_android.so are matched
* snes9x__2005_libretro.dll and snes9x_libretro_android.so are
* NOT matched
*/
bool core_info_core_file_id_is_equal(const char *core_path_a,
const char *core_path_b)
{
char core_file_id_a[256];
char core_file_id_b[256];
if ( string_is_empty(core_path_a)
|| string_is_empty(core_path_b)
|| !core_info_get_file_id(
path_basename_nocompression(core_path_a),
core_file_id_a, sizeof(core_file_id_a))
|| !core_info_get_file_id(
path_basename_nocompression(core_path_b),
core_file_id_b, sizeof(core_file_id_b)))
return false;
return string_is_equal(core_file_id_a, core_file_id_b);
}
bool core_info_database_match_archive_member(const char *database_path)
{
char *database = NULL;
const char *new_path = path_basename_nocompression(
database_path);
core_info_state_t *p_coreinfo = NULL;
if (string_is_empty(new_path))
return false;
if (!(database = strdup(new_path)))
return false;
path_remove_extension(database);
p_coreinfo = &core_info_st;
if (p_coreinfo->curr_list)
{
size_t i;
for (i = 0; i < p_coreinfo->curr_list->count; i++)
{
const core_info_t *info = &p_coreinfo->curr_list->list[i];
if (!info->database_match_archive_member)
continue;
if (!string_list_find_elem(info->databases_list, database))
continue;
free(database);
return true;
}
}
free(database);
return false;
}
bool core_info_database_supports_content_path(
const char *database_path, const char *path)
{
char *database = NULL;
const char *new_path = path_basename(database_path);
core_info_state_t *p_coreinfo = NULL;
if (string_is_empty(new_path))
return false;
if (!(database = strdup(new_path)))
return false;
path_remove_extension(database);
p_coreinfo = &core_info_st;
if (p_coreinfo->curr_list)
{
size_t i;
for (i = 0; i < p_coreinfo->curr_list->count; i++)
{
const core_info_t *info = &p_coreinfo->curr_list->list[i];
if (!string_list_find_elem(info->supported_extensions_list,
path_get_extension(path)))
continue;
if (!string_list_find_elem(info->databases_list, database))
continue;
free(database);
return true;
}
}
free(database);
return false;
}
bool core_info_list_get_display_name(
core_info_list_t *core_info_list,
const char *core_path, char *s, size_t len)
{
core_info_t *info;
if (!core_info_list)
return false;
info = core_info_find_internal(
core_info_list, core_path);
if ( s
&& info
&& !string_is_empty(info->display_name))
{
strlcpy(s, info->display_name, len);
return true;
}
return false;
}
/* Returns core_info parameters required for
* core updater tasks, read from specified file.
* Returned core_updater_info_t object must be
* freed using core_info_free_core_updater_info().
* Returns NULL if 'path' is invalid. */
core_updater_info_t *core_info_get_core_updater_info(
const char *info_path)
{
struct config_entry_list
*entry = NULL;
bool tmp_bool = false;
core_updater_info_t *info = NULL;
config_file_t *conf = NULL;
if (string_is_empty(info_path))
return NULL;
/* Read config file */
if (!(conf = config_file_new_from_path_to_string(info_path)))
return NULL;
/* Create info struct */
if (!(info = (core_updater_info_t*)malloc(sizeof(*info))))
return NULL;
info->is_experimental = false;
info->display_name = NULL;
info->description = NULL;
info->licenses = NULL;
/* Fetch required parameters */
/* > is_experimental */
if (config_get_bool(conf, "is_experimental", &tmp_bool))
info->is_experimental = tmp_bool;
/* > display_name */
entry = config_get_entry(conf, "display_name");
if (entry && !string_is_empty(entry->value))
{
info->display_name = entry->value;
entry->value = NULL;
}
/* > description */
entry = config_get_entry(conf, "description");
if (entry && !string_is_empty(entry->value))
{
info->description = entry->value;
entry->value = NULL;
}
/* > licenses */
entry = config_get_entry(conf, "license");
if (entry && !string_is_empty(entry->value))
{
info->licenses = entry->value;
entry->value = NULL;
}
/* Clean up */
config_file_free(conf);
return info;
}
void core_info_free_core_updater_info(core_updater_info_t *info)
{
if (!info)
return;
if (info->display_name)
free(info->display_name);
if (info->description)
free(info->description);
if (info->licenses)
free(info->licenses);
free(info);
info = NULL;
}
static int core_info_qsort_func_path(const core_info_t *a,
const core_info_t *b)
{
if (!a || !b || string_is_empty(a->path) || string_is_empty(b->path))
return 0;
return strcasecmp(a->path, b->path);
}
static int core_info_qsort_func_display_name(const core_info_t *a,
const core_info_t *b)
{
if ( !a
|| !b
|| string_is_empty(a->display_name)
|| string_is_empty(b->display_name))
return 0;
return strcasecmp(a->display_name, b->display_name);
}
static int core_info_qsort_func_core_name(const core_info_t *a,
const core_info_t *b)
{
if ( !a
|| !b
|| string_is_empty(a->core_name)
|| string_is_empty(b->core_name))
return 0;
return strcasecmp(a->core_name, b->core_name);
}
static int core_info_qsort_func_system_name(const core_info_t *a,
const core_info_t *b)
{
if (
!a
|| !b
|| string_is_empty(a->systemname)
|| string_is_empty(b->systemname))
return 0;
return strcasecmp(a->systemname, b->systemname);
}
void core_info_qsort(core_info_list_t *core_info_list,
enum core_info_list_qsort_type qsort_type)
{
if (!core_info_list)
return;
if (core_info_list->count < 2)
return;
switch (qsort_type)
{
case CORE_INFO_LIST_SORT_PATH:
qsort(core_info_list->list,
core_info_list->count,
sizeof(core_info_t),
(int (*)(const void *, const void *))
core_info_qsort_func_path);
break;
case CORE_INFO_LIST_SORT_DISPLAY_NAME:
qsort(core_info_list->list,
core_info_list->count,
sizeof(core_info_t),
(int (*)(const void *, const void *))
core_info_qsort_func_display_name);
break;
case CORE_INFO_LIST_SORT_CORE_NAME:
qsort(core_info_list->list,
core_info_list->count,
sizeof(core_info_t),
(int (*)(const void *, const void *))
core_info_qsort_func_core_name);
break;
case CORE_INFO_LIST_SORT_SYSTEM_NAME:
qsort(core_info_list->list,
core_info_list->count,
sizeof(core_info_t),
(int (*)(const void *, const void *))
core_info_qsort_func_system_name);
break;
default:
break;
}
}
bool core_info_current_supports_savestate(void)
{
core_info_state_t *p_coreinfo = &core_info_st;
settings_t *settings = config_get_ptr();
if (settings->bools.core_info_savestate_bypass)
return true;
/* If no core is currently loaded, assume
* by default that all savestate functionality
* is supported */
if (!p_coreinfo->current)
return true;
return p_coreinfo->current->savestate_support_level >=
CORE_INFO_SAVESTATE_BASIC;
}
bool core_info_current_supports_rewind(void)
{
core_info_state_t *p_coreinfo = &core_info_st;
settings_t *settings = config_get_ptr();
if (settings->bools.core_info_savestate_bypass)
return true;
/* If no core is currently loaded, assume
* by default that all savestate functionality
* is supported */
if (!p_coreinfo->current)
return true;
return p_coreinfo->current->savestate_support_level >=
CORE_INFO_SAVESTATE_SERIALIZED;
}
bool core_info_current_supports_netplay(void)
{
core_info_state_t *p_coreinfo = &core_info_st;
settings_t *settings = config_get_ptr();
if (settings->bools.core_info_savestate_bypass)
return true;
/* If no core is currently loaded, assume
* by default that all savestate functionality
* is supported */
if (!p_coreinfo->current)
return true;
return p_coreinfo->current->savestate_support_level >=
CORE_INFO_SAVESTATE_DETERMINISTIC;
}
bool core_info_current_supports_runahead(void)
{
core_info_state_t *p_coreinfo = &core_info_st;
settings_t *settings = config_get_ptr();
if (settings->bools.core_info_savestate_bypass)
return true;
/* If no core is currently loaded, assume
* by default that all savestate functionality
* is supported */
if (!p_coreinfo->current)
return true;
return p_coreinfo->current->savestate_support_level >=
CORE_INFO_SAVESTATE_DETERMINISTIC;
}
static bool core_info_update_core_aux_file(const char *path, bool create)
{
bool aux_file_exists = false;
if (string_is_empty(path))
return false;
/* Check whether aux file exists */
aux_file_exists = path_is_valid(path);
/* Create or delete aux file, as required */
if (create && !aux_file_exists)
{
RFILE *aux_file = filestream_open(path,
RETRO_VFS_FILE_ACCESS_WRITE,
RETRO_VFS_FILE_ACCESS_HINT_NONE);
if (!aux_file)
return false;
/* We have to write something - just output
* a single character */
if (filestream_putc(aux_file, 0) != 0)
{
filestream_close(aux_file);
return false;
}
filestream_close(aux_file);
}
else if (!create && aux_file_exists)
if (filestream_delete(path) != 0)
return false;
return true;
}
/* Sets 'locked' status of specified core
* > Returns true if successful
* > Like all functions that access the cached
* core info list this is *not* thread safe */
bool core_info_set_core_lock(const char *core_path, bool lock)
{
size_t _len;
core_info_t *core_info = NULL;
char lock_file_path[PATH_MAX_LENGTH];
#if defined(ANDROID)
/* Play Store builds do not support
* core locking */
if (play_feature_delivery_enabled())
return false;
#endif
/* Search for specified core */
if (
string_is_empty(core_path)
|| !core_info_find(core_path, &core_info)
|| string_is_empty(core_info->path))
return false;
/* Get lock file path */
_len = strlcpy(lock_file_path, core_info->path,
sizeof(lock_file_path));
strlcpy(lock_file_path + _len,
".lck",
sizeof(lock_file_path) - _len);
/* Create or delete lock file, as required */
if (!core_info_update_core_aux_file(lock_file_path, lock))
return false;
/* File operations were successful - update
* core info entry */
core_info->is_locked = lock;
return true;
}
/* Fetches 'locked' status of specified core
* > If 'validate_path' is 'true', will search
* cached core info list for a corresponding
* 'sanitised' core file path. This is *not*
* thread safe
* > If 'validate_path' is 'false', performs a
* direct filesystem check. This *is* thread
* safe, but validity of specified core path
* must be checked externally */
bool core_info_get_core_lock(const char *core_path, bool validate_path)
{
size_t _len;
core_info_t *core_info = NULL;
const char *core_file_path = NULL;
bool is_locked = false;
char lock_file_path[PATH_MAX_LENGTH];
#if defined(ANDROID)
/* Play Store builds do not support
* core locking */
if (play_feature_delivery_enabled())
return false;
#endif
if (string_is_empty(core_path))
return false;
/* Check whether core path is to be validated */
if (validate_path)
{
if (core_info_find(core_path, &core_info))
core_file_path = core_info->path;
}
else
core_file_path = core_path;
/* A core cannot be locked if it does not exist... */
if ( string_is_empty(core_file_path)
|| !path_is_valid(core_file_path))
return false;
/* Get lock file path */
_len = strlcpy(lock_file_path, core_file_path,
sizeof(lock_file_path));
strlcpy(lock_file_path + _len,
".lck",
sizeof(lock_file_path) - _len);
/* Check whether lock file exists */
is_locked = path_is_valid(lock_file_path);
/* If core path has been validated (and a
* core info object is available), ensure
* that core info 'is_locked' field is
* up to date */
if (validate_path && core_info)
core_info->is_locked = is_locked;
return is_locked;
}
/* Sets 'standalone exempt' status of specified core
* > A 'standalone exempt' core will not be shown
* in the contentless cores menu when display type
* is set to 'custom'
* > Returns true if successful
* > Returns false if core does not support
* contentless operation
* > *Not* thread safe */
bool core_info_set_core_standalone_exempt(const char *core_path, bool exempt)
{
/* Static platforms do not support the contentless
* cores menu */
#if defined(HAVE_DYNAMIC)
size_t _len;
core_info_t *core_info = NULL;
char exempt_file_path[PATH_MAX_LENGTH];
/* Search for specified core */
if ( string_is_empty(core_path)
|| !core_info_find(core_path, &core_info)
|| string_is_empty(core_info->path)
|| !core_info->supports_no_game)
return false;
/* Get 'standalone exempt' file path */
_len = strlcpy(exempt_file_path, core_info->path,
sizeof(exempt_file_path));
strlcpy(exempt_file_path + _len,
".lsae",
sizeof(exempt_file_path) - _len);
/* Create or delete 'standalone exempt' file, as required */
if (core_info_update_core_aux_file(exempt_file_path, exempt))
{
/* File operations were successful - update
* core info entry */
core_info->is_standalone_exempt = exempt;
return true;
}
#endif
return false;
}
/* Fetches 'standalone exempt' status of specified core
* > Returns true if core should be excluded from
* the contentless cores menu when display type is
* set to 'custom'
* > *Not* thread safe */
bool core_info_get_core_standalone_exempt(const char *core_path)
{
/* Static platforms do not support the contentless
* cores menu */
#if defined(HAVE_DYNAMIC)
size_t _len;
core_info_t *core_info = NULL;
char exempt_file_path[PATH_MAX_LENGTH];
/* Search for specified core */
if ( string_is_empty(core_path)
|| !core_info_find(core_path, &core_info)
|| string_is_empty(core_info->path)
|| !core_info->supports_no_game)
return false;
/* Get 'standalone exempt' file path */
_len = strlcpy(exempt_file_path, core_info->path,
sizeof(exempt_file_path));
strlcpy(exempt_file_path + _len,
".lsae",
sizeof(exempt_file_path) - _len);
/* Check whether 'standalone exempt' file exists */
if (path_is_valid(exempt_file_path))
{
core_info->is_standalone_exempt = true;
return true;
}
core_info->is_standalone_exempt = false;
#endif
return false;
}
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