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command.c
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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) 2021 - David G.F.
*
* 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 <stdlib.h>
#include <stddef.h>
#include <locale.h>
#ifdef HAVE_NETWORKING
#include <net/net_compat.h>
#include <net/net_socket.h>
#endif
#include <lists/dir_list.h>
#include <file/file_path.h>
#include <streams/stdin_stream.h>
#include <streams/file_stream.h>
#include <string/stdstring.h>
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#ifdef HAVE_CHEEVOS
#include "cheevos/cheevos.h"
#endif
#ifdef HAVE_GFX_WIDGETS
#include "gfx/gfx_widgets.h"
#endif
#ifdef HAVE_MENU
#include "menu/menu_driver.h"
#endif
#ifdef HAVE_NETWORKING
#include "network/netplay/netplay.h"
#endif
#include "audio/audio_driver.h"
#if defined(HAVE_CG) || defined(HAVE_GLSL) || defined(HAVE_SLANG) || defined(HAVE_HLSL)
#include "gfx/video_shader_parse.h"
#endif
#include "autosave.h"
#include "command.h"
#include "core_info.h"
#include "cheat_manager.h"
#include "content.h"
#include "dynamic.h"
#include "list_special.h"
#include "paths.h"
#include "retroarch.h"
#include "runloop.h"
#include "verbosity.h"
#include "version.h"
#include "version_git.h"
#define CMD_BUF_SIZE 4096
static void command_post_state_loaded(void)
{
#ifdef HAVE_CHEEVOS
if (rcheevos_hardcore_active())
{
const char *_msg = msg_hash_to_str(MSG_CHEEVOS_HARDCORE_MODE_DISABLED);
rcheevos_pause_hardcore();
runloop_msg_queue_push(_msg, strlen(_msg), 0, 180, true, NULL,
MESSAGE_QUEUE_ICON_DEFAULT, MESSAGE_QUEUE_CATEGORY_INFO);
}
#endif
#ifdef HAVE_NETWORKING
netplay_driver_ctl(RARCH_NETPLAY_CTL_LOAD_SAVESTATE, NULL);
#endif
{
settings_t *settings = config_get_ptr();
video_driver_state_t *video_st =
video_state_get_ptr();
bool frame_time_counter_reset_after_load_state =
settings->bools.frame_time_counter_reset_after_load_state;
if (frame_time_counter_reset_after_load_state)
video_st->frame_time_count = 0;
}
}
#if defined(HAVE_COMMAND)
/* Generic command parse utilities */
static bool command_get_arg(const char *tok,
const char **arg, unsigned *index)
{
unsigned i;
for (i = 0; i < ARRAY_SIZE(map); i++)
{
if (string_is_equal(tok, map[i].str))
{
if (arg)
*arg = NULL;
if (index)
*index = i;
return true;
}
}
for (i = 0; i < ARRAY_SIZE(action_map); i++)
{
const char *str = strstr(tok, action_map[i].str);
if (str == tok)
{
const char *argument = str + strlen(action_map[i].str);
if (!argument)
return false;
if (*argument != ' ' && *argument != '\0')
return false;
if (arg)
*arg = argument + 1;
if (index)
*index = i;
return true;
}
}
return false;
}
static void command_parse_sub_msg(command_t *handle, const char *tok)
{
const char *arg = NULL;
unsigned index = 0;
if (command_get_arg(tok, &arg, &index))
{
if (arg)
{
if (!action_map[index].action(handle, arg))
RARCH_ERR("Command \"%s\" failed.\n", arg);
}
else
handle->state[map[index].id] = true;
}
else
RARCH_WARN(msg_hash_to_str(MSG_UNRECOGNIZED_COMMAND), tok);
}
static void command_parse_msg(
command_t *handle, char *buf)
{
char *save = NULL;
const char *tok = strtok_r(buf, "\n", &save);
while (tok)
{
command_parse_sub_msg(handle, tok);
tok = strtok_r(NULL, "\n", &save);
}
}
#if defined(HAVE_NETWORK_CMD)
typedef struct
{
/* Network socket FD */
int net_fd;
/* Source address for the command received */
struct sockaddr_storage cmd_source;
/* Size of the previous structure in use */
socklen_t cmd_source_len;
} command_network_t;
static void network_command_reply(
command_t *cmd,
const char * data, size_t len)
{
command_network_t *netcmd = (command_network_t*)cmd->userptr;
/* Respond (fire and forget since it's UDP) */
sendto(netcmd->net_fd, data, len, 0,
(struct sockaddr*)&netcmd->cmd_source, netcmd->cmd_source_len);
}
static void network_command_free(command_t *handle)
{
command_network_t *netcmd = (command_network_t*)handle->userptr;
if (netcmd->net_fd >= 0)
socket_close(netcmd->net_fd);
free(netcmd);
free(handle);
}
static void command_network_poll(command_t *handle)
{
ssize_t ret;
char buf[2048];
command_network_t *netcmd = (command_network_t*)handle->userptr;
if (netcmd->net_fd < 0)
return;
for (;;)
{
netcmd->cmd_source_len = sizeof(netcmd->cmd_source);
if ((ret = recvfrom(netcmd->net_fd, buf, sizeof(buf) - 1, 0,
(struct sockaddr*)&netcmd->cmd_source,
&netcmd->cmd_source_len)) <= 0)
return;
buf[ret] = '\0';
command_parse_msg(handle, buf);
}
}
command_t* command_network_new(uint16_t port)
{
struct addrinfo *res = NULL;
command_t *cmd = (command_t*)calloc(1, sizeof(*cmd));
command_network_t *netcmd = (command_network_t*)calloc(
1, sizeof(command_network_t));
int fd = socket_init(
(void**)&res, port, NULL, SOCKET_TYPE_DATAGRAM, AF_INET);
RARCH_LOG("[NetCMD]: %s %hu.\n",
msg_hash_to_str(MSG_BRINGING_UP_COMMAND_INTERFACE_ON_PORT),
(unsigned short)port);
if (fd < 0)
goto error;
netcmd->net_fd = fd;
cmd->userptr = netcmd;
cmd->poll = command_network_poll;
cmd->replier = network_command_reply;
cmd->destroy = network_command_free;
if (!socket_nonblock(netcmd->net_fd))
goto error;
if (!socket_bind(netcmd->net_fd, (void*)res))
{
RARCH_ERR("[NetCMD]: %s.\n",
msg_hash_to_str(MSG_FAILED_TO_BIND_SOCKET));
goto error;
}
freeaddrinfo_retro(res);
return cmd;
error:
if (res)
freeaddrinfo_retro(res);
free(netcmd);
free(cmd);
return NULL;
}
#endif
#if defined(HAVE_STDIN_CMD)
typedef struct
{
/* Buffer and pointer for stdin reads */
size_t stdin_buf_ptr;
char stdin_buf[CMD_BUF_SIZE];
} command_stdin_t;
static void stdin_command_reply(
command_t *cmd,
const char * data, size_t len)
{
/* Just write to stdout! */
fwrite(data, 1, len, stdout);
fflush(stdout);
}
static void stdin_command_free(command_t *handle)
{
free(handle->userptr);
free(handle);
}
static void command_stdin_poll(command_t *handle)
{
ptrdiff_t msg_len;
char *last_newline = NULL;
command_stdin_t *stdincmd = (command_stdin_t*)handle->userptr;
ssize_t ret = read_stdin(
stdincmd->stdin_buf + stdincmd->stdin_buf_ptr,
CMD_BUF_SIZE - stdincmd->stdin_buf_ptr - 1);
if (ret == 0)
return;
stdincmd->stdin_buf_ptr += ret;
stdincmd->stdin_buf[stdincmd->stdin_buf_ptr] = '\0';
last_newline = strrchr(stdincmd->stdin_buf, '\n');
if (!last_newline)
{
/* We're receiving bogus data in pipe
* (no terminating newline), flush out the buffer. */
if (stdincmd->stdin_buf_ptr + 1 >= CMD_BUF_SIZE)
{
stdincmd->stdin_buf_ptr = 0;
stdincmd->stdin_buf[0] = '\0';
}
return;
}
*last_newline++ = '\0';
msg_len = last_newline - stdincmd->stdin_buf;
command_parse_msg(handle, stdincmd->stdin_buf);
memmove(stdincmd->stdin_buf, last_newline,
stdincmd->stdin_buf_ptr - msg_len);
stdincmd->stdin_buf_ptr -= msg_len;
}
command_t* command_stdin_new(void)
{
command_t *cmd;
command_stdin_t *stdincmd;
#ifndef _WIN32
#ifdef HAVE_NETWORKING
if (!socket_nonblock(STDIN_FILENO))
return NULL;
#endif
#endif
cmd = (command_t*)calloc(1, sizeof(command_t));
stdincmd = (command_stdin_t*)calloc(1, sizeof(command_stdin_t));
if (!cmd)
return NULL;
if (!stdincmd)
{
free(cmd);
return NULL;
}
cmd->userptr = stdincmd;
cmd->poll = command_stdin_poll;
cmd->replier = stdin_command_reply;
cmd->destroy = stdin_command_free;
return cmd;
}
#endif
bool command_get_config_param(command_t *cmd, const char* arg)
{
size_t _len;
char reply[8192];
#ifdef HAVE_BSV_MOVIE
char value_dynamic[256];
#endif
const char *value = "unsupported";
settings_t *settings = config_get_ptr();
bool video_fullscreen = settings->bools.video_fullscreen;
const char *dir_runtime_log = settings->paths.directory_runtime_log;
const char *log_dir = settings->paths.log_dir;
const char *directory_cache = settings->paths.directory_cache;
const char *directory_system = settings->paths.directory_system;
const char *path_username = settings->paths.username;
if (string_is_equal(arg, "video_fullscreen"))
{
if (video_fullscreen)
value = "true";
else
value = "false";
}
else if (string_is_equal(arg, "savefile_directory"))
value = dir_get_ptr(RARCH_DIR_SAVEFILE);
else if (string_is_equal(arg, "savestate_directory"))
value = dir_get_ptr(RARCH_DIR_SAVESTATE);
else if (string_is_equal(arg, "runtime_log_directory"))
value = dir_runtime_log;
else if (string_is_equal(arg, "log_dir"))
value = log_dir;
else if (string_is_equal(arg, "cache_directory"))
value = directory_cache;
else if (string_is_equal(arg, "system_directory"))
value = directory_system;
else if (string_is_equal(arg, "netplay_nickname"))
value = path_username;
#ifdef HAVE_BSV_MOVIE
else if (string_is_equal(arg, "active_replay"))
{
input_driver_state_t *input_st = input_state_get_ptr();
value = value_dynamic;
value_dynamic[0] = '\0';
if (input_st->bsv_movie_state_handle)
{
bsv_movie_t *movie = input_st->bsv_movie_state_handle;
snprintf(value_dynamic, sizeof(value_dynamic), "%lld %u %lld",
(long long)(movie->identifier),
input_st->bsv_movie_state.flags,
(long long)(movie->frame_counter));
}
else
strlcpy(value_dynamic, "0 0 0", sizeof(value_dynamic));
}
#endif
/* TODO: query any string */
_len = strlcpy(reply, "GET_CONFIG_PARAM ", sizeof(reply));
_len += strlcpy(reply + _len, arg, sizeof(reply) - _len);
reply[ _len] = ' ';
reply[++_len] = '\0';
_len += strlcpy(reply + _len, value, sizeof(reply) - _len);
cmd->replier(cmd, reply, _len);
return true;
}
#if defined(HAVE_LAKKA)
#include <sys/un.h>
#define MAX_USER_CONNECTIONS 4
typedef struct
{
/* File descriptor for the domain socket */
int sfd;
/* Client sockets */
int userfd[MAX_USER_CONNECTIONS];
/* Last received user socket */
int last_fd;
} command_uds_t;
static void uds_command_reply(
command_t *cmd,
const char * data, size_t len)
{
command_uds_t *subcmd = (command_uds_t*)cmd->userptr;
write(subcmd->last_fd, data, len);
}
static void uds_command_free(command_t *handle)
{
int i;
command_uds_t *udscmd = (command_uds_t*)handle->userptr;
for (i = 0; i < MAX_USER_CONNECTIONS; i++)
if (udscmd->userfd[i] >= 0)
socket_close(udscmd->userfd[i]);
socket_close(udscmd->sfd);
free(handle->userptr);
free(handle);
}
static void command_uds_poll(command_t *handle)
{
int i;
int fd;
ssize_t ret;
char buf[2048];
command_uds_t *udscmd = (command_uds_t*)handle->userptr;
if (udscmd->sfd < 0)
return;
/* Read data from clients and process commands */
for (i = 0; i < MAX_USER_CONNECTIONS; i++)
{
bool err = false;
fd = udscmd->userfd[i];
if (fd < 0)
continue;
ret = socket_receive_all_nonblocking(fd, &err, buf, sizeof(buf) - 1);
if (!ret)
continue;
if (!err)
{
buf[ret] = '\0';
udscmd->last_fd = fd;
command_parse_msg(handle, buf);
}
else
{
socket_close(fd);
udscmd->userfd[i] = -1;
}
}
/* Accepts new connections from clients */
fd = accept(udscmd->sfd, NULL, NULL);
if (fd >= 0)
{
if (socket_nonblock(fd))
{
for (i = 0; i < MAX_USER_CONNECTIONS; i++)
{
if (udscmd->userfd[i] < 0)
{
udscmd->userfd[i] = fd;
return;
}
}
}
socket_close(fd);
}
}
command_t* command_uds_new(void)
{
int i;
command_t *cmd;
command_uds_t *subcmd;
struct sockaddr_un addr;
socklen_t addrsz = offsetof(struct sockaddr_un, sun_path) + STRLEN_CONST("retroarch/cmd") + 1;
int fd = socket(AF_UNIX, SOCK_STREAM, 0);
if (fd < 0)
return NULL;
/* use an abstract socket for simplicity */
memset(&addr, 0, sizeof(addr));
addr.sun_family = AF_UNIX;
strcpy(&addr.sun_path[1], "retroarch/cmd");
if (bind(fd, (struct sockaddr*)&addr, addrsz) < 0 ||
listen(fd, MAX_USER_CONNECTIONS) < 0)
{
socket_close(fd);
return NULL;
}
if (!socket_nonblock(fd))
{
socket_close(fd);
return NULL;
}
cmd = (command_t*)calloc(1, sizeof(command_t));
subcmd = (command_uds_t*)calloc(1, sizeof(command_uds_t));
subcmd->sfd = fd;
subcmd->last_fd = -1;
for (i = 0; i < MAX_USER_CONNECTIONS; i++)
subcmd->userfd[i] = -1;
cmd->userptr = subcmd;
cmd->poll = command_uds_poll;
cmd->replier = uds_command_reply;
cmd->destroy = uds_command_free;
return cmd;
}
#endif
/* Routines used to invoke retroarch command ... */
#ifdef HAVE_NETWORK_CMD
static bool command_verify(const char *cmd)
{
unsigned i;
if (command_get_arg(cmd, NULL, NULL))
return true;
RARCH_ERR("[NetCMD]: Command \"%s\" is not recognized by the program.\n", cmd);
RARCH_ERR("[NetCMD]: \tValid commands:\n");
for (i = 0; i < ARRAY_SIZE(map); i++)
RARCH_ERR("\t\t%s\n", map[i].str);
for (i = 0; i < ARRAY_SIZE(action_map); i++)
RARCH_ERR("\t\t%s %s\n", action_map[i].str, action_map[i].arg_desc);
return false;
}
static bool udp_send_packet(const char *host, uint16_t port, const char *msg)
{
char port_buf[6];
const struct addrinfo *tmp_info;
struct addrinfo *addr = NULL;
struct addrinfo hints = {0};
size_t len = strlen(msg);
bool ret = false;
snprintf(port_buf, sizeof(port_buf), "%hu", (unsigned short)port);
hints.ai_socktype = SOCK_DGRAM;
hints.ai_flags = AI_NUMERICSERV;
if (getaddrinfo_retro(host, port_buf, &hints, &addr))
return false;
if (!addr)
return false;
/* Send to all possible targets. */
tmp_info = addr;
do
{
int fd = socket(tmp_info->ai_family,
tmp_info->ai_socktype, tmp_info->ai_protocol);
if (fd < 0)
continue;
if (sendto(fd, msg, len, 0, tmp_info->ai_addr, tmp_info->ai_addrlen) ==
(ssize_t)len)
ret = true;
socket_close(fd);
} while ((tmp_info = tmp_info->ai_next));
freeaddrinfo_retro(addr);
return ret;
}
bool command_network_send(const char *cmd_)
{
char *command = NULL;
char *save = NULL;
const char *cmd = NULL;
if (!network_init())
return false;
if (!(command = strdup(cmd_)))
return false;
cmd = strtok_r(command, ";", &save);
if (cmd)
{
uint16_t port = DEFAULT_NETWORK_CMD_PORT;
const char *port_ = NULL;
const char *host = strtok_r(NULL, ";", &save);
if (host)
port_ = strtok_r(NULL, ";", &save);
else
{
#ifdef _WIN32
host = "127.0.0.1";
#else
host = "localhost";
#endif
}
if (port_)
port = strtoul(port_, NULL, 0);
RARCH_LOG("[NetCMD]: %s: \"%s\" to %s:%hu\n",
msg_hash_to_str(MSG_SENDING_COMMAND),
cmd, host, (unsigned short)port);
if (command_verify(cmd) && udp_send_packet(host, port, cmd))
{
free(command);
return true;
}
}
free(command);
return false;
}
#endif
bool command_show_osd_msg(command_t *cmd, const char* arg)
{
runloop_msg_queue_push(arg, strlen(arg), 1, 180, false, NULL,
MESSAGE_QUEUE_ICON_DEFAULT, MESSAGE_QUEUE_CATEGORY_INFO);
return true;
}
bool command_load_state_slot(command_t *cmd, const char *arg)
{
char state_path[16384];
size_t _len = 0;
char reply[128] = "";
unsigned int slot = (unsigned int)strtoul(arg, NULL, 10);
bool savestates_enabled = core_info_current_supports_savestate();
bool ret = false;
state_path[0] = '\0';
_len = strlcpy(reply, "LOAD_STATE_SLOT ", sizeof(reply));
_len += snprintf(reply + _len, sizeof(reply) - _len, "%d", slot);
if (savestates_enabled)
{
size_t info_size;
runloop_get_savestate_path(state_path, sizeof(state_path), slot);
info_size = core_serialize_size();
savestates_enabled = (info_size > 0);
}
if (savestates_enabled)
{
if ((ret = content_load_state(state_path, false, false)))
command_post_state_loaded();
}
else
ret = false;
cmd->replier(cmd, reply, _len);
return ret;
}
bool command_play_replay_slot(command_t *cmd, const char *arg)
{
#ifdef HAVE_BSV_MOVIE
char replay_path[16384];
char reply[128] = "";
unsigned int slot = (unsigned int)strtoul(arg, NULL, 10);
bool savestates_enabled = core_info_current_supports_savestate();
bool ret = false;
replay_path[0] = '\0';
if (savestates_enabled)
{
size_t info_size;
runloop_get_replay_path(replay_path, sizeof(replay_path), slot);
info_size = core_serialize_size();
savestates_enabled = (info_size > 0);
}
if (savestates_enabled)
{
ret = movie_start_playback(input_state_get_ptr(), replay_path);
if (ret)
{
input_driver_state_t *input_st = input_state_get_ptr();
task_queue_wait(NULL, NULL);
if (input_st->bsv_movie_state_next_handle)
snprintf(reply, sizeof(reply) - 1, "PLAY_REPLAY_SLOT %lld", (long long)(input_st->bsv_movie_state_next_handle->identifier));
else
snprintf(reply, sizeof(reply) - 1, "PLAY_REPLAY_SLOT 0");
command_post_state_loaded();
}
}
else
ret = false;
cmd->replier(cmd, reply, strlen(reply));
return ret;
#else
return false;
#endif
}
#if defined(HAVE_CHEEVOS)
bool command_read_ram(command_t *cmd, const char *arg)
{
unsigned i;
char *reply = NULL;
const uint8_t *data = NULL;
char *reply_at = NULL;
unsigned int nbytes = 0;
unsigned int alloc_size = 0;
unsigned int addr = -1;
size_t _len = 0;
if (sscanf(arg, "%x %u", &addr, &nbytes) != 2)
return true;
/* We allocate more than needed, saving 20 bytes is not really relevant */
alloc_size = 40 + nbytes * 3;
reply = (char*)malloc(alloc_size);
reply[0] = '\0';
reply_at = reply + snprintf(
reply, alloc_size - 1, "READ_CORE_RAM" " %x", addr);
if ((data = rcheevos_patch_address(addr)))
{
for (i = 0; i < nbytes; i++)
snprintf(reply_at + 3 * i, 4, " %.2X", data[i]);
reply_at[3 * nbytes] = '\n';
_len = reply_at + 3 * nbytes + 1 - reply;
}
else
{
strlcpy(reply_at, " -1\n", sizeof(reply) - strlen(reply));
_len = reply_at + STRLEN_CONST(" -1\n") - reply;
}
cmd->replier(cmd, reply, _len);
free(reply);
return true;
}
bool command_write_ram(command_t *cmd, const char *arg)
{
unsigned int addr = (unsigned int)strtoul(arg, (char**)&arg, 16);
uint8_t *data = (uint8_t *)rcheevos_patch_address(addr);
if (!data)
return false;
if (rcheevos_hardcore_active())
{
RARCH_LOG("[Command]: Achievements hardcore mode disabled by WRITE_CORE_RAM.\n");
rcheevos_pause_hardcore();
}
while (*arg)
{
*data = strtoul(arg, (char**)&arg, 16);
data++;
}
return true;
}
#endif
bool command_version(command_t *cmd, const char* arg)
{
char reply[256];
size_t _len = strlcpy(reply, PACKAGE_VERSION, sizeof(reply));
reply[ _len] = '\n';
reply[++_len] = '\0';
cmd->replier(cmd, reply, _len);
return true;
}
static const rarch_memory_descriptor_t* command_memory_get_descriptor(const rarch_memory_map_t* mmap, unsigned address, size_t* offset)
{
const rarch_memory_descriptor_t* desc = mmap->descriptors;
const rarch_memory_descriptor_t* end = desc + mmap->num_descriptors;
for (; desc < end; desc++)
{
if (desc->core.select == 0)
{
/* if select is 0, attempt to explicitly match the address */
if (address >= desc->core.start && address < desc->core.start + desc->core.len)
{
*offset = address - desc->core.start;
return desc;
}
}
else
{
/* otherwise, attempt to match the address by matching the select bits */
if (((desc->core.start ^ address) & desc->core.select) == 0)
{
/* adjust the address to the start of the descriptor */
unsigned desc_offset = address - (unsigned)desc->core.start;
/* address is unsigned. we only need that much of the disconnect mask */
unsigned mask = (unsigned)desc->core.disconnect;
/* this magic logic is copied from mmap_reduce. it removes any bits from
* address that are non-zero in the disconnect field. bits above the
* removed bits are shifted down to fill the gap. */
while (mask)
{
const unsigned tmp = (mask - 1) & ~mask;
desc_offset = (desc_offset & tmp) | ((desc_offset >> 1) & ~tmp);
mask = (mask & (mask - 1)) >> 1;
}
/* we've calculated the actual offset of the data within the descriptor */
*offset = desc_offset;
/* sanity check - make sure the descriptor is large enough to hold the target address */
if (desc_offset < desc->core.len)
return desc;
}
}
}
return NULL;
}
static uint8_t *command_memory_get_pointer(
const rarch_system_info_t* sys_info,
unsigned address, unsigned int* max_bytes,
int for_write, char *s, size_t len)
{
if (!sys_info || sys_info->mmaps.num_descriptors == 0)
strlcpy(s, " -1 no memory map defined\n", len);
else
{
size_t offset;
const rarch_memory_descriptor_t* desc = command_memory_get_descriptor(&sys_info->mmaps, address, &offset);
if (!desc)
strlcpy(s, " -1 no descriptor for address\n", len);
else if (!desc->core.ptr)
strlcpy(s, " -1 no data for descriptor\n", len);
else if (for_write && (desc->core.flags & RETRO_MEMDESC_CONST))
strlcpy(s, " -1 descriptor data is readonly\n", len);
else
{
*max_bytes = (unsigned int)(desc->core.len - offset);
return (uint8_t*)desc->core.ptr + desc->core.offset + offset;
}
}
*max_bytes = 0;
return NULL;
}
bool command_get_status(command_t *cmd, const char* arg)
{
size_t _len;
char reply[4096];
uint8_t flags = content_get_flags();
if (flags & CONTENT_ST_FLAG_IS_INITED)
{
/* add some content info */
core_info_t *core_info = NULL;
runloop_state_t *runloop_st = runloop_state_get_ptr();
core_info_get_current_core(&core_info);
_len = strlcpy(reply, "GET_STATUS ", sizeof(reply));
if (runloop_st->flags & RUNLOOP_FLAG_PAUSED)
_len += strlcpy(reply + _len, "PAUSED", sizeof(reply) - _len);
else
_len += strlcpy(reply + _len, "PLAYING", sizeof(reply) - _len);
_len += strlcpy(reply + _len, " ", sizeof(reply) - _len);
if (core_info)
_len += strlcpy(reply + _len, core_info->system_id,
sizeof(reply) - _len);
else
_len += strlcpy(reply + _len, runloop_st->system.info.library_name,
sizeof(reply) - _len);
_len += strlcpy(reply + _len, ",", sizeof(reply) - _len);
_len += strlcpy(reply + _len,
path_basename(path_get(RARCH_PATH_BASENAME)), sizeof(reply) - _len);
_len += snprintf(reply + _len, sizeof(reply) - _len,
",crc32=%x\n", content_get_crc());
}
else
_len = strlcpy(reply, "GET_STATUS CONTENTLESS", sizeof(reply));
cmd->replier(cmd, reply, _len);
return true;
}
bool command_read_memory(command_t *cmd, const char *arg)
{
unsigned i;
char* reply = NULL;
char* reply_at = NULL;
const uint8_t* data = NULL;
unsigned int nbytes = 0;
unsigned int alloc_size = 0;
unsigned int address = -1;
size_t _len = 0;
unsigned int max_bytes = 0;
runloop_state_t *runloop_st = runloop_state_get_ptr();
const rarch_system_info_t* sys_info= &runloop_st->system;
if (sscanf(arg, "%x %u", &address, &nbytes) != 2)
return false;
/* Ensure large enough to return all requested bytes or an error message */
alloc_size = 64 + nbytes * 3;
reply = (char*)malloc(alloc_size);
reply_at = reply + snprintf(reply, alloc_size - 1, "READ_CORE_MEMORY %x", address);
if ((data = command_memory_get_pointer(
sys_info, address, &max_bytes,
0, reply_at, alloc_size - strlen(reply))))
{
if (nbytes > max_bytes)
nbytes = max_bytes;
for (i = 0; i < nbytes; i++)
snprintf(reply_at + 3 * i, 4, " %02X", data[i]);
reply_at[3 * nbytes] = '\n';
_len = reply_at + 3 * nbytes + 1 - reply;
}
else
_len = strlen(reply);
cmd->replier(cmd, reply, _len);
free(reply);
return true;
}
bool command_write_memory(command_t *cmd, const char *arg)
{