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RetroArch/content.c
twinaphex e41127459e Rename 'filestream' functions
2016-03-24 04:09:25 +01:00

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/* RetroArch - A frontend for libretro.
* Copyright (C) 2010-2014 - Hans-Kristian Arntzen
* Copyright (C) 2011-2016 - Daniel De Matteis
*
* 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 <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <sys/types.h>
#include <string.h>
#include <time.h>
#include <errno.h>
#ifdef _WIN32
#ifdef _XBOX
#include <xtl.h>
#define setmode _setmode
#define INVALID_FILE_ATTRIBUTES -1
#else
#include <io.h>
#include <fcntl.h>
#include <windows.h>
#endif
#endif
#include <boolean.h>
#include <encodings/utf.h>
#include <compat/strl.h>
#include <compat/posix_string.h>
#include <file/file_path.h>
#ifdef HAVE_COMPRESSION
#include <file/archive_file.h>
#endif
#include <string/stdstring.h>
#include <retro_miscellaneous.h>
#include <streams/file_stream.h>
#include <retro_stat.h>
#include <retro_assert.h>
#include <lists/string_list.h>
#include <string/stdstring.h>
#include "defaults.h"
#include "msg_hash.h"
#include "content.h"
#include "general.h"
#include "dynamic.h"
#include "movie.h"
#include "patch.h"
#include "system.h"
#include "retroarch.h"
#include "command_event.h"
#include "libretro_version_1.h"
#include "verbosity.h"
#ifdef HAVE_7ZIP
#include "deps/7zip/7z.h"
#include "deps/7zip/7zAlloc.h"
#include "deps/7zip/7zCrc.h"
#include "deps/7zip/7zFile.h"
#endif
#ifdef HAVE_MENU
#include "menu/menu_driver.h"
#endif
#ifdef HAVE_CHEEVOS
#include "cheevos.h"
#endif
#define MAX_ARGS 32
struct sram_block
{
unsigned type;
void *data;
size_t size;
};
#ifdef HAVE_COMPRESSION
#ifdef HAVE_7ZIP
static bool utf16_to_char(uint8_t **utf_data,
size_t *dest_len, const uint16_t *in)
{
unsigned len = 0;
while (in[len] != '\0')
len++;
utf16_conv_utf8(NULL, dest_len, in, len);
*dest_len += 1;
*utf_data = (uint8_t*)malloc(*dest_len);
if (*utf_data == 0)
return false;
return utf16_conv_utf8(*utf_data, dest_len, in, len);
}
static bool utf16_to_char_string(const uint16_t *in, char *s, size_t len)
{
size_t dest_len = 0;
uint8_t *utf16_data = NULL;
bool ret = utf16_to_char(&utf16_data, &dest_len, in);
if (ret)
{
utf16_data[dest_len] = 0;
strlcpy(s, (const char*)utf16_data, len);
}
free(utf16_data);
utf16_data = NULL;
return ret;
}
/* Extract the relative path (needle) from a 7z archive
* (path) and allocate a buf for it to write it in.
* If optional_outfile is set, extract to that instead
* and don't allocate buffer.
*/
static int content_7zip_file_read(
const char *path,
const char *needle, void **buf,
const char *optional_outfile)
{
CFileInStream archiveStream;
CLookToRead lookStream;
CSzArEx db;
ISzAlloc allocImp;
ISzAlloc allocTempImp;
uint8_t *output = 0;
long outsize = -1;
/*These are the allocation routines.
* Currently using the non-standard 7zip choices. */
allocImp.Alloc = SzAlloc;
allocImp.Free = SzFree;
allocTempImp.Alloc = SzAllocTemp;
allocTempImp.Free = SzFreeTemp;
if (InFile_Open(&archiveStream.file, path))
{
RARCH_ERR("Could not open %s as 7z archive\n.", path);
return -1;
}
FileInStream_CreateVTable(&archiveStream);
LookToRead_CreateVTable(&lookStream, False);
lookStream.realStream = &archiveStream.s;
LookToRead_Init(&lookStream);
CrcGenerateTable();
SzArEx_Init(&db);
if (SzArEx_Open(&db, &lookStream.s, &allocImp, &allocTempImp) == SZ_OK)
{
uint32_t i;
bool file_found = false;
uint16_t *temp = NULL;
size_t temp_size = 0;
uint32_t block_index = 0xFFFFFFFF;
SRes res = SZ_OK;
for (i = 0; i < db.db.NumFiles; i++)
{
size_t len;
char infile[PATH_MAX_LENGTH];
size_t offset = 0;
size_t outSizeProcessed = 0;
const CSzFileItem *f = db.db.Files + i;
/* We skip over everything which is not a directory.
* FIXME: Why continue then if f->IsDir is true?*/
if (f->IsDir)
continue;
len = SzArEx_GetFileNameUtf16(&db, i, NULL);
if (len > temp_size)
{
free(temp);
temp_size = len;
temp = (uint16_t *)malloc(temp_size * sizeof(temp[0]));
if (temp == 0)
{
res = SZ_ERROR_MEM;
break;
}
}
SzArEx_GetFileNameUtf16(&db, i, temp);
res = utf16_to_char_string(temp, infile, sizeof(infile))
? SZ_OK : SZ_ERROR_FAIL;
if (string_is_equal(infile, needle))
{
size_t output_size = 0;
RARCH_LOG_OUTPUT("Opened archive %s. Now trying to extract %s\n",
path, needle);
/* C LZMA SDK does not support chunked extraction - see here:
* sourceforge.net/p/sevenzip/discussion/45798/thread/6fb59aaf/
* */
file_found = true;
res = SzArEx_Extract(&db, &lookStream.s, i, &block_index,
&output, &output_size, &offset, &outSizeProcessed,
&allocImp, &allocTempImp);
if (res != SZ_OK)
break; /* This goes to the error section. */
outsize = outSizeProcessed;
if (optional_outfile != NULL)
{
const void *ptr = (const void*)(output + offset);
if (!filestream_write_file(optional_outfile, ptr, outsize))
{
RARCH_ERR("Could not open outfilepath %s.\n",
optional_outfile);
res = SZ_OK;
file_found = true;
outsize = -1;
}
}
else
{
/*We could either use the 7Zip allocated buffer,
* or create our own and use it.
* We would however need to realloc anyways, because RetroArch
* expects a \0 at the end, therefore we allocate new,
* copy and free the old one. */
*buf = malloc(outsize + 1);
((char*)(*buf))[outsize] = '\0';
memcpy(*buf,output + offset,outsize);
}
break;
}
}
free(temp);
IAlloc_Free(&allocImp, output);
if (!(file_found && res == SZ_OK))
{
/* Error handling */
if (!file_found)
RARCH_ERR("File %s not found in %s\n", needle, path);
RARCH_ERR("Failed to open compressed file inside 7zip archive.\n");
outsize = -1;
}
}
SzArEx_Free(&db, &allocImp);
File_Close(&archiveStream.file);
return outsize;
}
static struct string_list *compressed_7zip_file_list_new(
const char *path, const char* ext)
{
CFileInStream archiveStream;
CLookToRead lookStream;
CSzArEx db;
ISzAlloc allocImp;
ISzAlloc allocTempImp;
size_t temp_size = 0;
struct string_list *list = NULL;
/* These are the allocation routines - currently using
* the non-standard 7zip choices. */
allocImp.Alloc = SzAlloc;
allocImp.Free = SzFree;
allocTempImp.Alloc = SzAllocTemp;
allocTempImp.Free = SzFreeTemp;
if (InFile_Open(&archiveStream.file, path))
{
RARCH_ERR("Could not open %s as 7z archive.\n",path);
return NULL;
}
list = string_list_new();
if (!list)
{
File_Close(&archiveStream.file);
return NULL;
}
FileInStream_CreateVTable(&archiveStream);
LookToRead_CreateVTable(&lookStream, False);
lookStream.realStream = &archiveStream.s;
LookToRead_Init(&lookStream);
CrcGenerateTable();
SzArEx_Init(&db);
if (SzArEx_Open(&db, &lookStream.s, &allocImp, &allocTempImp) == SZ_OK)
{
uint32_t i;
struct string_list *ext_list = ext ? string_split(ext, "|"): NULL;
SRes res = SZ_OK;
uint16_t *temp = NULL;
for (i = 0; i < db.db.NumFiles; i++)
{
union string_list_elem_attr attr;
char infile[PATH_MAX_LENGTH];
const char *file_ext = NULL;
size_t len = 0;
bool supported_by_core = false;
const CSzFileItem *f = db.db.Files + i;
/* we skip over everything, which is a directory. */
if (f->IsDir)
continue;
len = SzArEx_GetFileNameUtf16(&db, i, NULL);
if (len > temp_size)
{
free(temp);
temp_size = len;
temp = (uint16_t *)malloc(temp_size * sizeof(temp[0]));
if (temp == 0)
{
res = SZ_ERROR_MEM;
break;
}
}
SzArEx_GetFileNameUtf16(&db, i, temp);
res = utf16_to_char_string(temp, infile, sizeof(infile))
? SZ_OK : SZ_ERROR_FAIL;
file_ext = path_get_extension(infile);
if (string_list_find_elem_prefix(ext_list, ".", file_ext))
supported_by_core = true;
/*
* Currently we only support files without subdirs in the archives.
* Folders are not supported (differences between win and lin.
* Archives within archives should imho never be supported.
*/
if (!supported_by_core)
continue;
attr.i = RARCH_COMPRESSED_FILE_IN_ARCHIVE;
if (!string_list_append(list, infile, attr))
{
res = SZ_ERROR_MEM;
break;
}
}
string_list_free(ext_list);
free(temp);
if (res != SZ_OK)
{
/* Error handling */
RARCH_ERR("Failed to open compressed_file: \"%s\"\n", path);
string_list_free(list);
list = NULL;
}
}
SzArEx_Free(&db, &allocImp);
File_Close(&archiveStream.file);
return list;
}
#endif
#ifdef HAVE_ZLIB
struct decomp_state
{
char *opt_file;
char *needle;
void **buf;
size_t size;
bool found;
};
static bool content_zip_file_decompressed_handle(
file_archive_file_handle_t *handle,
const uint8_t *cdata, uint32_t csize,
uint32_t size, uint32_t crc32)
{
int ret = 0;
handle->backend = file_archive_get_default_file_backend();
if (!handle->backend)
goto error;
if (!handle->backend->stream_decompress_data_to_file_init(
handle, cdata, csize, size))
return false;
do{
ret = handle->backend->stream_decompress_data_to_file_iterate(
handle->stream);
}while(ret == 0);
handle->real_checksum = handle->backend->stream_crc_calculate(0,
handle->data, size);
if (handle->real_checksum != crc32)
{
RARCH_ERR("Inflated checksum did not match CRC32!\n");
goto error;
}
if (handle->stream)
free(handle->stream);
return true;
error:
if (handle->stream)
free(handle->stream);
if (handle->data)
free(handle->data);
return false;
}
/* Extract the relative path (needle) from a
* ZIP archive (path) and allocate a buffer for it to write it in.
*
* optional_outfile if not NULL will be used to extract the file to.
* buf will be 0 then.
*/
static int content_zip_file_decompressed(
const char *name, const char *valid_exts,
const uint8_t *cdata, unsigned cmode,
uint32_t csize, uint32_t size,
uint32_t crc32, void *userdata)
{
struct decomp_state *st = (struct decomp_state*)userdata;
/* Ignore directories. */
if (name[strlen(name) - 1] == '/' || name[strlen(name) - 1] == '\\')
return 1;
RARCH_LOG("[deflate] Path: %s, CRC32: 0x%x\n", name, crc32);
if (strstr(name, st->needle))
{
bool goto_error = false;
file_archive_file_handle_t handle = {0};
st->found = true;
if (content_zip_file_decompressed_handle(&handle,
cdata, csize, size, crc32))
{
if (st->opt_file != 0)
{
/* Called in case core has need_fullpath enabled. */
char *buf = (char*)malloc(size);
if (buf)
{
RARCH_LOG("Extracting file : %s\n", st->opt_file);
memcpy(buf, handle.data, size);
if (!filestream_write_file(st->opt_file, buf, size))
goto_error = true;
}
free(buf);
st->size = 0;
}
else
{
/* Called in case core has need_fullpath disabled.
* Will copy decompressed content directly into
* RetroArch's ROM buffer. */
*st->buf = malloc(size);
memcpy(*st->buf, handle.data, size);
st->size = size;
}
}
if (handle.data)
free(handle.data);
if (goto_error)
return 0;
}
return 1;
}
static int content_zip_file_read(
const char *path,
const char *needle, void **buf,
const char* optional_outfile)
{
file_archive_transfer_t zlib;
struct decomp_state st;
bool returnerr = true;
int ret = 0;
zlib.type = ZLIB_TRANSFER_INIT;
st.needle = NULL;
st.opt_file = NULL;
st.found = false;
st.buf = buf;
if (needle)
st.needle = strdup(needle);
if (optional_outfile)
st.opt_file = strdup(optional_outfile);
do
{
ret = file_archive_parse_file_iterate(&zlib, &returnerr, path,
"", content_zip_file_decompressed, &st);
if (!returnerr)
break;
}while(ret == 0 && !st.found);
file_archive_parse_file_iterate_stop(&zlib);
if (st.opt_file)
free(st.opt_file);
if (st.needle)
free(st.needle);
if (!st.found)
return -1;
return st.size;
}
#endif
#endif
#ifdef HAVE_COMPRESSION
/* Generic compressed file loader.
* Extracts to buf, unless optional_filename != 0
* Then extracts to optional_filename and leaves buf alone.
*/
static int content_file_compressed_read(
const char * path, void **buf,
const char* optional_filename, ssize_t *length)
{
int ret = 0;
const char* file_ext = NULL;
struct string_list *str_list = string_split(path, "#");
/* Safety check.
* If optional_filename and optional_filename
* exists, we simply return 0,
* hoping that optional_filename is the
* same as requested.
*/
if (optional_filename && path_file_exists(optional_filename))
{
*length = 0;
return 1;
}
/* We assure that there is something after the '#' symbol.
*
* This error condition happens for example, when
* path = /path/to/file.7z, or
* path = /path/to/file.7z#
*/
if (str_list->size <= 1)
goto error;
#if defined(HAVE_7ZIP) || defined(HAVE_ZLIB)
file_ext = path_get_extension(str_list->elems[0].data);
#endif
#ifdef HAVE_7ZIP
if (string_is_equal_noncase(file_ext, "7z"))
{
*length = content_7zip_file_read(str_list->elems[0].data,
str_list->elems[1].data, buf, optional_filename);
if (*length != -1)
ret = 1;
}
#endif
#ifdef HAVE_ZLIB
if (string_is_equal_noncase(file_ext, "zip"))
{
*length = content_zip_file_read(str_list->elems[0].data,
str_list->elems[1].data, buf, optional_filename);
if (*length != -1)
ret = 1;
}
string_list_free(str_list);
#endif
return ret;
error:
RARCH_ERR("Could not extract string and substring from "
": %s.\n", path);
string_list_free(str_list);
*length = 0;
return 0;
}
#endif
/**
* content_file_read:
* @path : path to file.
* @buf : buffer to allocate and read the contents of the
* file into. Needs to be freed manually.
* @length : Number of items read, -1 on error.
*
* Read the contents of a file into @buf. Will call content_file_compressed_read
* if path contains a compressed file, otherwise will call filestream_read_file().
*
* Returns: 1 if file read, 0 on error.
*/
static int content_file_read(const char *path, void **buf, ssize_t *length)
{
#ifdef HAVE_COMPRESSION
if (path_contains_compressed_file(path))
{
if (content_file_compressed_read(path, buf, NULL, length))
return 1;
}
#endif
return filestream_read_file(path, buf, length);
}
struct string_list *compressed_file_list_new(const char *path,
const char* ext)
{
#if defined(HAVE_ZLIB) || defined(HAVE_7ZIP)
const char* file_ext = path_get_extension(path);
#endif
#ifdef HAVE_7ZIP
if (string_is_equal_noncase(file_ext, "7z"))
return compressed_7zip_file_list_new(path,ext);
#endif
#ifdef HAVE_ZLIB
if (string_is_equal_noncase(file_ext, "zip"))
return file_archive_get_file_list(path, ext);
#endif
return NULL;
}
static void check_defaults_dir_create_dir(const char *path)
{
if (path_is_directory(path))
return;
path_mkdir(path);
}
static void check_defaults_dirs(void)
{
if (*g_defaults.dir.core_assets)
check_defaults_dir_create_dir(g_defaults.dir.core_assets);
if (*g_defaults.dir.remap)
check_defaults_dir_create_dir(g_defaults.dir.remap);
if (*g_defaults.dir.screenshot)
check_defaults_dir_create_dir(g_defaults.dir.screenshot);
if (*g_defaults.dir.core)
check_defaults_dir_create_dir(g_defaults.dir.core);
if (*g_defaults.dir.autoconfig)
check_defaults_dir_create_dir(g_defaults.dir.autoconfig);
if (*g_defaults.dir.audio_filter)
check_defaults_dir_create_dir(g_defaults.dir.audio_filter);
if (*g_defaults.dir.video_filter)
check_defaults_dir_create_dir(g_defaults.dir.video_filter);
if (*g_defaults.dir.assets)
check_defaults_dir_create_dir(g_defaults.dir.assets);
if (*g_defaults.dir.playlist)
check_defaults_dir_create_dir(g_defaults.dir.playlist);
if (*g_defaults.dir.core)
check_defaults_dir_create_dir(g_defaults.dir.core);
if (*g_defaults.dir.core_info)
check_defaults_dir_create_dir(g_defaults.dir.core_info);
if (*g_defaults.dir.overlay)
check_defaults_dir_create_dir(g_defaults.dir.overlay);
if (*g_defaults.dir.port)
check_defaults_dir_create_dir(g_defaults.dir.port);
if (*g_defaults.dir.shader)
check_defaults_dir_create_dir(g_defaults.dir.shader);
if (*g_defaults.dir.savestate)
check_defaults_dir_create_dir(g_defaults.dir.savestate);
if (*g_defaults.dir.sram)
check_defaults_dir_create_dir(g_defaults.dir.sram);
if (*g_defaults.dir.system)
check_defaults_dir_create_dir(g_defaults.dir.system);
if (*g_defaults.dir.resampler)
check_defaults_dir_create_dir(g_defaults.dir.resampler);
if (*g_defaults.dir.menu_config)
check_defaults_dir_create_dir(g_defaults.dir.menu_config);
if (*g_defaults.dir.content_history)
check_defaults_dir_create_dir(g_defaults.dir.content_history);
if (*g_defaults.dir.cache)
check_defaults_dir_create_dir(g_defaults.dir.cache);
if (*g_defaults.dir.database)
check_defaults_dir_create_dir(g_defaults.dir.database);
if (*g_defaults.dir.cursor)
check_defaults_dir_create_dir(g_defaults.dir.cursor);
if (*g_defaults.dir.cheats)
check_defaults_dir_create_dir(g_defaults.dir.cheats);
}
void content_push_to_history_playlist(bool do_push,
const char *path, void *data)
{
settings_t *settings = config_get_ptr();
struct retro_system_info *info = (struct retro_system_info*)data;
/* If the history list is not enabled, early return. */
if (!settings->history_list_enable)
return;
if (!g_defaults.history)
return;
if (!do_push)
return;
content_playlist_push(g_defaults.history,
path,
NULL,
settings->libretro,
info->library_name,
NULL,
NULL);
}
/**
* content_load_init_wrap:
* @args : Input arguments.
* @argc : Count of arguments.
* @argv : Arguments.
*
* Generates an @argc and @argv pair based on @args
* of type rarch_main_wrap.
**/
static void content_load_init_wrap(
const struct rarch_main_wrap *args,
int *argc, char **argv)
{
#ifdef HAVE_FILE_LOGGER
int i;
#endif
*argc = 0;
argv[(*argc)++] = strdup("retroarch");
if (!args->no_content)
{
if (args->content_path)
{
RARCH_LOG("Using content: %s.\n", args->content_path);
argv[(*argc)++] = strdup(args->content_path);
}
#ifdef HAVE_MENU
else
{
RARCH_LOG("No content, starting dummy core.\n");
argv[(*argc)++] = strdup("--menu");
}
#endif
}
if (args->sram_path)
{
argv[(*argc)++] = strdup("-s");
argv[(*argc)++] = strdup(args->sram_path);
}
if (args->state_path)
{
argv[(*argc)++] = strdup("-S");
argv[(*argc)++] = strdup(args->state_path);
}
if (args->config_path)
{
argv[(*argc)++] = strdup("-c");
argv[(*argc)++] = strdup(args->config_path);
}
#ifdef HAVE_DYNAMIC
if (args->libretro_path)
{
argv[(*argc)++] = strdup("-L");
argv[(*argc)++] = strdup(args->libretro_path);
}
#endif
if (args->verbose)
argv[(*argc)++] = strdup("-v");
#ifdef HAVE_FILE_LOGGER
for (i = 0; i < *argc; i++)
RARCH_LOG("arg #%d: %s\n", i, argv[i]);
#endif
}
/**
* content_load:
*
* Loads content file and starts up RetroArch.
* If no content file can be loaded, will start up RetroArch
* as-is.
*
* Returns: false (0) if rarch_main_init failed, otherwise true (1).
**/
static bool content_load(content_ctx_info_t *info)
{
unsigned i;
bool retval = true;
int rarch_argc = 0;
char *rarch_argv[MAX_ARGS] = {NULL};
char *argv_copy [MAX_ARGS] = {NULL};
char **rarch_argv_ptr = (char**)info->argv;
int *rarch_argc_ptr = (int*)&info->argc;
struct rarch_main_wrap *wrap_args = (struct rarch_main_wrap*)
calloc(1, sizeof(*wrap_args));
if (!wrap_args)
return false;
retro_assert(wrap_args);
if (info->environ_get)
info->environ_get(rarch_argc_ptr,
rarch_argv_ptr, info->args, wrap_args);
if (wrap_args->touched)
{
content_load_init_wrap(wrap_args, &rarch_argc, rarch_argv);
memcpy(argv_copy, rarch_argv, sizeof(rarch_argv));
rarch_argv_ptr = (char**)rarch_argv;
rarch_argc_ptr = (int*)&rarch_argc;
}
rarch_ctl(RARCH_CTL_MAIN_DEINIT, NULL);
wrap_args->argc = *rarch_argc_ptr;
wrap_args->argv = rarch_argv_ptr;
if (!rarch_ctl(RARCH_CTL_MAIN_INIT, wrap_args))
{
retval = false;
goto error;
}
#ifdef HAVE_MENU
menu_driver_ctl(RARCH_MENU_CTL_SHADER_MANAGER_INIT, NULL);
#endif
event_cmd_ctl(EVENT_CMD_HISTORY_INIT, NULL);
event_cmd_ctl(EVENT_CMD_RESUME, NULL);
event_cmd_ctl(EVENT_CMD_VIDEO_SET_ASPECT_RATIO, NULL);
check_defaults_dirs();
frontend_driver_process_args(rarch_argc_ptr, rarch_argv_ptr);
frontend_driver_content_loaded();
error:
for (i = 0; i < ARRAY_SIZE(argv_copy); i++)
free(argv_copy[i]);
free(wrap_args);
return retval;
}
/**
* read_content_file:
* @path : buffer of the content file.
* @buf : size of the content file.
* @length : size of the content file that has been read from.
*
* Read the content file. If read into memory, also performs soft patching
* (see patch_content function) in case soft patching has not been
* blocked by the enduser.
*
* Returns: true if successful, false on error.
**/
static bool read_content_file(unsigned i, const char *path, void **buf,
ssize_t *length)
{
#ifdef HAVE_ZLIB
content_stream_t stream_info;
uint32_t *content_crc_ptr = NULL;
#endif
uint8_t *ret_buf = NULL;
global_t *global = global_get_ptr();
RARCH_LOG("%s: %s.\n",
msg_hash_to_str(MSG_LOADING_CONTENT_FILE), path);
if (!content_file_read(path, (void**) &ret_buf, length))
return false;
if (*length < 0)
return false;
if (i != 0)
return true;
/* Attempt to apply a patch. */
if (!global->patch.block_patch)
patch_content(&ret_buf, length);
#ifdef HAVE_ZLIB
content_ctl(CONTENT_CTL_GET_CRC, &content_crc_ptr);
stream_info.a = 0;
stream_info.b = ret_buf;
stream_info.c = *length;
content_ctl(CONTENT_CTL_STREAM_CRC_CALCULATE, &stream_info);
*content_crc_ptr = stream_info.crc;
RARCH_LOG("CRC32: 0x%x .\n", (unsigned)*content_crc_ptr);
#endif
*buf = ret_buf;
return true;
}
/**
* dump_to_file_desperate:
* @data : pointer to data buffer.
* @size : size of @data.
* @type : type of file to be saved.
*
* Attempt to save valuable RAM data somewhere.
**/
static bool dump_to_file_desperate(const void *data,
size_t size, unsigned type)
{
time_t time_;
char timebuf[256];
char path[PATH_MAX_LENGTH];
#if defined(_WIN32) && !defined(_XBOX)
const char *base = getenv("APPDATA");
#elif defined(__CELLOS_LV2__) || defined(_XBOX)
const char *base = NULL;
#else
const char *base = getenv("HOME");
#endif
if (!base)
return false;
snprintf(path, sizeof(path), "%s/RetroArch-recovery-%u", base, type);
time(&time_);
strftime(timebuf, sizeof(timebuf), "%Y-%m-%d-%H-%M-%S", localtime(&time_));
strlcat(path, timebuf, sizeof(path));
if (!filestream_write_file(path, data, size))
return false;
RARCH_WARN("Succeeded in saving RAM data to \"%s\".\n", path);
return true;
}
/**
* save_state:
* @path : path of saved state that shall be written to.
*
* Save a state from memory to disk.
*
* Returns: true if successful, false otherwise.
**/
static bool content_save_state(const char *path)
{
retro_ctx_serialize_info_t serial_info;
retro_ctx_size_info_t info;
bool ret = false;
void *data = NULL;
core_ctl(CORE_CTL_RETRO_SERIALIZE_SIZE, &info);
RARCH_LOG("%s: \"%s\".\n",
msg_hash_to_str(MSG_SAVING_STATE),
path);
if (info.size == 0)
return false;
data = malloc(info.size);
if (!data)
return false;
RARCH_LOG("%s: %d %s.\n",
msg_hash_to_str(MSG_STATE_SIZE),
(int)info.size,
msg_hash_to_str(MSG_BYTES));
serial_info.data = data;
serial_info.size = info.size;
ret = core_ctl(CORE_CTL_RETRO_SERIALIZE, &serial_info);
if (ret)
ret = filestream_write_file(path, data, info.size);
else
{
RARCH_ERR("%s \"%s\".\n",
msg_hash_to_str(MSG_FAILED_TO_SAVE_STATE_TO),
path);
}
free(data);
return ret;
}
/**
* content_load_state:
* @path : path that state will be loaded from.
*
* Load a state from disk to memory.
*
* Returns: true if successful, false otherwise.
**/
static bool content_load_state(const char *path)
{
unsigned i;
ssize_t size;
retro_ctx_serialize_info_t serial_info;
unsigned num_blocks = 0;
void *buf = NULL;
struct sram_block *blocks = NULL;
settings_t *settings = config_get_ptr();
global_t *global = global_get_ptr();
bool ret = filestream_read_file(path, &buf, &size);
RARCH_LOG("%s: \"%s\".\n",
msg_hash_to_str(MSG_LOADING_STATE),
path);
if (!ret || size < 0)
goto error;
RARCH_LOG("%s: %u %s.\n",
msg_hash_to_str(MSG_STATE_SIZE),
(unsigned)size,
msg_hash_to_str(MSG_BYTES));
if (settings->block_sram_overwrite && global->savefiles
&& global->savefiles->size)
{
RARCH_LOG("%s.\n",
msg_hash_to_str(MSG_BLOCKING_SRAM_OVERWRITE));
blocks = (struct sram_block*)
calloc(global->savefiles->size, sizeof(*blocks));
if (blocks)
{
num_blocks = global->savefiles->size;
for (i = 0; i < num_blocks; i++)
blocks[i].type = global->savefiles->elems[i].attr.i;
}
}
for (i = 0; i < num_blocks; i++)
{
retro_ctx_memory_info_t mem_info;
mem_info.id = blocks[i].type;
core_ctl(CORE_CTL_RETRO_GET_MEMORY, &mem_info);
blocks[i].size = mem_info.size;
}
for (i = 0; i < num_blocks; i++)
if (blocks[i].size)
blocks[i].data = malloc(blocks[i].size);
/* Backup current SRAM which is overwritten by unserialize. */
for (i = 0; i < num_blocks; i++)
{
if (blocks[i].data)
{
retro_ctx_memory_info_t mem_info;
const void *ptr = NULL;
mem_info.id = blocks[i].type;
core_ctl(CORE_CTL_RETRO_GET_MEMORY, &mem_info);
ptr = mem_info.data;
if (ptr)
memcpy(blocks[i].data, ptr, blocks[i].size);
}
}
serial_info.data_const = buf;
serial_info.size = size;
ret = core_ctl(CORE_CTL_RETRO_UNSERIALIZE, &serial_info);
/* Flush back. */
for (i = 0; i < num_blocks; i++)
{
if (blocks[i].data)
{
retro_ctx_memory_info_t mem_info;
void *ptr = NULL;
mem_info.id = blocks[i].type;
core_ctl(CORE_CTL_RETRO_GET_MEMORY, &mem_info);
ptr = mem_info.data;
if (ptr)
memcpy(ptr, blocks[i].data, blocks[i].size);
}
}
for (i = 0; i < num_blocks; i++)
free(blocks[i].data);
free(blocks);
free(buf);
if (!ret)
goto error;
return true;
error:
RARCH_ERR("%s \"%s\".\n",
msg_hash_to_str(MSG_FAILED_TO_LOAD_STATE),
path);
return false;
}
/**
* load_ram_file:
* @path : path of RAM state that will be loaded from.
* @type : type of memory
*
* Load a RAM state from disk to memory.
*/
static bool load_ram_file(void *data)
{
ssize_t rc;
retro_ctx_memory_info_t mem_info;
void *buf = NULL;
ram_type_t *ram = (ram_type_t*)data;
if (!ram)
return false;
mem_info.id = ram->type;
core_ctl(CORE_CTL_RETRO_GET_MEMORY, &mem_info);
if (mem_info.size == 0 || !mem_info.data)
return false;
if (!filestream_read_file(ram->path, &buf, &rc))
return false;
if (rc > 0)
{
if (rc > (ssize_t)mem_info.size)
{
RARCH_WARN("SRAM is larger than implementation expects, "
"doing partial load (truncating %u %s %s %u).\n",
(unsigned)rc,
msg_hash_to_str(MSG_BYTES),
msg_hash_to_str(MSG_TO),
(unsigned)mem_info.size);
rc = mem_info.size;
}
memcpy(mem_info.data, buf, rc);
}
if (buf)
free(buf);
return true;
}
/**
* save_ram_file:
* @path : path of RAM state that shall be written to.
* @type : type of memory
*
* Save a RAM state from memory to disk.
*
*/
static bool save_ram_file(ram_type_t *ram)
{
retro_ctx_memory_info_t mem_info;
mem_info.id = ram->type;
core_ctl(CORE_CTL_RETRO_GET_MEMORY, &mem_info);
if (!mem_info.data || mem_info.size == 0)
return false;
if (!filestream_write_file(ram->path, mem_info.data, mem_info.size))
{
RARCH_ERR("%s.\n",
msg_hash_to_str(MSG_FAILED_TO_SAVE_SRAM));
RARCH_WARN("Attempting to recover ...\n");
/* In case the file could not be written to,
* the fallback function 'dump_to_file_desperate'
* will be called. */
if (!dump_to_file_desperate(mem_info.data, mem_info.size, ram->type))
{
RARCH_WARN("Failed ... Cannot recover save file.\n");
}
return false;
}
RARCH_LOG("%s \"%s\".\n",
msg_hash_to_str(MSG_SAVED_SUCCESSFULLY_TO),
ram->path);
return true;
}
/* Load the content into memory. */
static bool load_content_into_memory(
struct retro_game_info *info,
unsigned i,
const char *path)
{
ssize_t len;
bool ret = false;
if (i == 0)
{
/* First content file is significant, attempt to do patching,
* CRC checking, etc. */
ret = read_content_file(i, path, (void**)&info->data, &len);
}
else
ret = content_file_read(path, (void**)&info->data, &len);
if (!ret || len < 0)
goto error;
info->size = len;
return true;
error:
RARCH_ERR("%s \"%s\".\n",
msg_hash_to_str(MSG_COULD_NOT_READ_CONTENT_FILE),
path);
return false;
}
#ifdef HAVE_COMPRESSION
static bool load_content_from_compressed_archive(
struct string_list *temporary_content,
struct retro_game_info *info, unsigned i,
struct string_list* additional_path_allocs,
bool need_fullpath, const char *path)
{
union string_list_elem_attr attributes;
char new_path[PATH_MAX_LENGTH];
char new_basedir[PATH_MAX_LENGTH];
ssize_t new_path_len = 0;
bool ret = false;
settings_t *settings = config_get_ptr();
rarch_system_info_t *sys_info= NULL;
runloop_ctl(RUNLOOP_CTL_SYSTEM_INFO_GET, &sys_info);
if (sys_info && sys_info->info.block_extract)
return true;
if (!need_fullpath || !path_contains_compressed_file(path))
return true;
RARCH_LOG("Compressed file in case of need_fullpath."
" Now extracting to temporary directory.\n");
strlcpy(new_basedir, settings->cache_directory,
sizeof(new_basedir));
if (string_is_empty(new_basedir) || !path_is_directory(new_basedir))
{
RARCH_WARN("Tried extracting to cache directory, but "
"cache directory was not set or found. "
"Setting cache directory to directory "
"derived by basename...\n");
fill_pathname_basedir(new_basedir, path,
sizeof(new_basedir));
}
attributes.i = 0;
fill_pathname_join(new_path, new_basedir,
path_basename(path), sizeof(new_path));
ret = content_file_compressed_read(path, NULL, new_path, &new_path_len);
if (!ret || new_path_len < 0)
{
RARCH_ERR("%s \"%s\".\n",
msg_hash_to_str(MSG_COULD_NOT_READ_CONTENT_FILE),
path);
return false;
}
RARCH_LOG("New path is: [%s]\n", new_path);
string_list_append(additional_path_allocs, new_path, attributes);
info[i].path =
additional_path_allocs->elems[additional_path_allocs->size -1 ].data;
if (!string_list_append(temporary_content, new_path, attributes))
return false;
return true;
}
#endif
/**
* load_content:
* @special : subsystem of content to be loaded. Can be NULL.
* content :
*
* Load content file (for libretro core).
*
* Returns : true if successful, otherwise false.
**/
static bool load_content(
struct string_list *temporary_content,
struct retro_game_info *info,
const struct string_list *content,
const struct retro_subsystem_info *special,
struct string_list* additional_path_allocs
)
{
unsigned i;
retro_ctx_load_content_info_t load_info;
if (!info || !additional_path_allocs)
return false;
for (i = 0; i < content->size; i++)
{
int attr = content->elems[i].attr.i;
bool need_fullpath = attr & 2;
bool require_content = attr & 4;
const char *path = content->elems[i].data;
if (require_content && string_is_empty(path))
{
RARCH_LOG("libretro core requires content, "
"but nothing was provided.\n");
return false;
}
info[i].path = NULL;
if (*path)
info[i].path = path;
if (!need_fullpath && !string_is_empty(path))
{
if (!load_content_into_memory(&info[i], i, path))
return false;
}
else
{
RARCH_LOG("Content loading skipped. Implementation will"
" load it on its own.\n");
#ifdef HAVE_COMPRESSION
if (!load_content_from_compressed_archive(
temporary_content,
&info[i], i,
additional_path_allocs, need_fullpath, path))
return false;
#endif
}
}
load_info.content = content;
load_info.special = special;
load_info.info = info;
if (!core_ctl(CORE_CTL_RETRO_LOAD_GAME, &load_info))
{
RARCH_ERR("%s.\n", msg_hash_to_str(MSG_FAILED_TO_LOAD_CONTENT));
return false;
}
#ifdef HAVE_CHEEVOS
if (!special)
{
const void *load_data = NULL;
cheevos_ctl(CHEEVOS_CTL_SET_CHEATS, NULL);
if (*content->elems[0].data)
load_data = info;
cheevos_ctl(CHEEVOS_CTL_LOAD, (void*)load_data);
}
#endif
return true;
}
static const struct retro_subsystem_info *init_content_file_subsystem(
bool *ret, rarch_system_info_t *system)
{
global_t *global = global_get_ptr();
const struct retro_subsystem_info *special =
libretro_find_subsystem_info(system->subsystem.data,
system->subsystem.size, global->subsystem);
if (!special)
{
RARCH_ERR(
"Failed to find subsystem \"%s\" in libretro implementation.\n",
global->subsystem);
goto error;
}
if (special->num_roms && !global->subsystem_fullpaths)
{
RARCH_ERR("libretro core requires special content, "
"but none were provided.\n");
goto error;
}
else if (special->num_roms && special->num_roms
!= global->subsystem_fullpaths->size)
{
RARCH_ERR("libretro core requires %u content files for "
"subsystem \"%s\", but %u content files were provided.\n",
special->num_roms, special->desc,
(unsigned)global->subsystem_fullpaths->size);
goto error;
}
else if (!special->num_roms && global->subsystem_fullpaths
&& global->subsystem_fullpaths->size)
{
RARCH_ERR("libretro core takes no content for subsystem \"%s\", "
"but %u content files were provided.\n",
special->desc,
(unsigned)global->subsystem_fullpaths->size);
goto error;
}
*ret = true;
return special;
error:
*ret = false;
return NULL;
}
#ifdef HAVE_ZLIB
static bool init_content_file_extract(
struct string_list *temporary_content,
struct string_list *content,
rarch_system_info_t *system,
const struct retro_subsystem_info *special,
union string_list_elem_attr *attr
)
{
unsigned i;
settings_t *settings = config_get_ptr();
for (i = 0; i < content->size; i++)
{
const char *ext = NULL;
const char *valid_ext = system->info.valid_extensions;
/* Block extract check. */
if (content->elems[i].attr.i & 1)
continue;
ext = path_get_extension(content->elems[i].data);
if (special)
valid_ext = special->roms[i].valid_extensions;
if (!ext)
continue;
if (string_is_equal_noncase(ext, "zip"))
{
char new_path[PATH_MAX_LENGTH];
char temp_content[PATH_MAX_LENGTH];
strlcpy(temp_content, content->elems[i].data,
sizeof(temp_content));
if (!file_archive_extract_first_content_file(temp_content,
sizeof(temp_content), valid_ext,
*settings->cache_directory ?
settings->cache_directory : NULL,
new_path, sizeof(new_path)))
{
RARCH_ERR("Failed to extract content from zipped file: %s.\n",
temp_content);
return false;
}
string_list_set(content, i, new_path);
if (!string_list_append(temporary_content,
new_path, *attr))
return false;
}
}
return true;
}
#endif
static bool init_content_file_set_attribs(
struct string_list *temporary_content,
struct string_list *content,
rarch_system_info_t *system,
const struct retro_subsystem_info *special)
{
union string_list_elem_attr attr;
global_t *global = global_get_ptr();
attr.i = 0;
if (*global->subsystem)
{
unsigned i;
for (i = 0; i < global->subsystem_fullpaths->size; i++)
{
attr.i = special->roms[i].block_extract;
attr.i |= special->roms[i].need_fullpath << 1;
attr.i |= special->roms[i].required << 2;
string_list_append(content,
global->subsystem_fullpaths->elems[i].data, attr);
}
}
else
{
settings_t *settings = config_get_ptr();
attr.i = system->info.block_extract;
attr.i |= system->info.need_fullpath << 1;
attr.i |= (!content_ctl(CONTENT_CTL_DOES_NOT_NEED_CONTENT, NULL)) << 2;
if (content_ctl(CONTENT_CTL_DOES_NOT_NEED_CONTENT, NULL)
&& settings->set_supports_no_game_enable)
string_list_append(content, "", attr);
else
{
char *fullpath = NULL;
runloop_ctl(RUNLOOP_CTL_GET_CONTENT_PATH, &fullpath);
string_list_append(content, fullpath, attr);
}
}
#ifdef HAVE_ZLIB
/* Try to extract all content we're going to load if appropriate. */
if (!init_content_file_extract(temporary_content,
content, system, special, &attr))
return false;
#endif
return true;
}
/**
* content_init_file:
*
* Initializes and loads a content file for the currently
* selected libretro core.
*
* Returns : true if successful, otherwise false.
**/
static bool content_init_file(struct string_list *temporary_content)
{
unsigned i;
struct retro_game_info *info = NULL;
bool ret = false;
struct string_list* additional_path_allocs = NULL;
struct string_list *content = NULL;
const struct retro_subsystem_info *special = NULL;
rarch_system_info_t *system = NULL;
global_t *global = global_get_ptr();
runloop_ctl(RUNLOOP_CTL_SYSTEM_INFO_GET, &system);
if (*global->subsystem)
{
special = init_content_file_subsystem(&ret, system);
if (!ret)
goto error;
}
content = string_list_new();
if (!content)
goto error;
if (!init_content_file_set_attribs(temporary_content,
content, system, special))
goto error;
info = (struct retro_game_info*)
calloc(content->size, sizeof(*info));
additional_path_allocs = string_list_new();
ret = load_content(temporary_content,
info, content, special, additional_path_allocs);
for (i = 0; i < content->size; i++)
free((void*)info[i].data);
string_list_free(additional_path_allocs);
if (info)
free(info);
error:
if (content)
string_list_free(content);
return ret;
}
bool content_ctl(enum content_ctl_state state, void *data)
{
unsigned i;
static const struct file_archive_file_backend *stream_backend = NULL;
static struct string_list *temporary_content = NULL;
static bool content_is_inited = false;
static bool core_does_not_need_content = false;
static uint32_t content_crc = 0;
switch(state)
{
case CONTENT_CTL_LOAD_RAM_FILE:
return load_ram_file(data);
case CONTENT_CTL_SAVE_RAM_FILE:
{
ram_type_t *ram = (ram_type_t*)data;
if (!ram)
return false;
save_ram_file(ram);
}
break;
case CONTENT_CTL_DOES_NOT_NEED_CONTENT:
return core_does_not_need_content;
case CONTENT_CTL_SET_DOES_NOT_NEED_CONTENT:
core_does_not_need_content = true;
break;
case CONTENT_CTL_UNSET_DOES_NOT_NEED_CONTENT:
core_does_not_need_content = false;
break;
case CONTENT_CTL_GET_CRC:
{
uint32_t **content_crc_ptr = (uint32_t**)data;
if (!content_crc_ptr)
return false;
*content_crc_ptr = &content_crc;
}
break;
case CONTENT_CTL_LOAD_STATE:
{
const char *path = (const char*)data;
if (!path)
return false;
return content_load_state(path);
}
case CONTENT_CTL_SAVE_STATE:
{
const char *path = (const char*)data;
if (!path)
return false;
return content_save_state(path);
}
case CONTENT_CTL_IS_INITED:
return content_is_inited;
case CONTENT_CTL_DEINIT:
content_ctl(CONTENT_CTL_TEMPORARY_FREE, NULL);
content_crc = 0;
content_is_inited = false;
core_does_not_need_content = false;
break;
case CONTENT_CTL_INIT:
content_is_inited = false;
temporary_content = string_list_new();
if (!temporary_content)
return false;
if (content_init_file(temporary_content))
{
content_is_inited = true;
return true;
}
content_ctl(CONTENT_CTL_DEINIT, NULL);
return false;
case CONTENT_CTL_TEMPORARY_FREE:
if (!temporary_content)
return false;
for (i = 0; i < temporary_content->size; i++)
{
const char *path = temporary_content->elems[i].data;
RARCH_LOG("%s: %s.\n",
msg_hash_to_str(MSG_REMOVING_TEMPORARY_CONTENT_FILE), path);
if (remove(path) < 0)
RARCH_ERR("%s: %s.\n",
msg_hash_to_str(MSG_FAILED_TO_REMOVE_TEMPORARY_FILE),
path);
}
string_list_free(temporary_content);
temporary_content = NULL;
break;
case CONTENT_CTL_STREAM_INIT:
#ifdef HAVE_ZLIB
if (!stream_backend)
stream_backend = file_archive_get_default_file_backend();
#endif
break;
case CONTENT_CTL_STREAM_CRC_CALCULATE:
{
content_stream_t *stream = NULL;
content_ctl(CONTENT_CTL_STREAM_INIT, NULL);
stream = (content_stream_t*)data;
#ifdef HAVE_ZLIB
stream->crc = stream_backend->stream_crc_calculate(
stream->a, stream->b, stream->c);
#endif
}
break;
case CONTENT_CTL_LOAD:
return content_load((content_ctx_info_t*)data);
case CONTENT_CTL_NONE:
default:
break;
}
return true;
}
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