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RetroArch/cheevos.c

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/* RetroArch - A frontend for libretro.
* Copyright (C) 2015 - Andre Leiradella
*
* 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 <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <configuration.h>
#include <formats/jsonsax.h>
#include <rhash.h>
#include <performance.h>
#include <runloop.h>
#include <retro_log.h>
#include "cheevos.h"
#include "dynamic.h"
#include "net_http_special.h"
#include "async_job.h"
enum
{
CHEEVOS_VAR_SIZE_BIT_0,
CHEEVOS_VAR_SIZE_BIT_1,
CHEEVOS_VAR_SIZE_BIT_2,
CHEEVOS_VAR_SIZE_BIT_3,
CHEEVOS_VAR_SIZE_BIT_4,
CHEEVOS_VAR_SIZE_BIT_5,
CHEEVOS_VAR_SIZE_BIT_6,
CHEEVOS_VAR_SIZE_BIT_7,
CHEEVOS_VAR_SIZE_NIBBLE_LOWER,
CHEEVOS_VAR_SIZE_NIBBLE_UPPER,
/* Byte, */
CHEEVOS_VAR_SIZE_EIGHT_BITS, /* =Byte, */
CHEEVOS_VAR_SIZE_SIXTEEN_BITS,
CHEEVOS_VAR_SIZE_THIRTYTWO_BITS,
CHEEVOS_VAR_SIZE_LAST
}; /* cheevos_var_t.size */
enum
{
CHEEVOS_VAR_TYPE_ADDRESS, /* compare to the value of a live address in RAM */
CHEEVOS_VAR_TYPE_VALUE_COMP, /* a number. assume 32 bit */
CHEEVOS_VAR_TYPE_DELTA_MEM, /* the value last known at this address. */
CHEEVOS_VAR_TYPE_DYNAMIC_VAR, /* a custom user-set variable */
CHEEVOS_VAR_TYPE_LAST
}; /* cheevos_var_t.type */
enum
{
CHEEVOS_COND_OP_EQUALS,
CHEEVOS_COND_OP_LESS_THAN,
CHEEVOS_COND_OP_LESS_THAN_OR_EQUAL,
CHEEVOS_COND_OP_GREATER_THAN,
CHEEVOS_COND_OP_GREATER_THAN_OR_EQUAL,
CHEEVOS_COND_OP_NOT_EQUAL_TO,
CHEEVOS_COND_OP_LAST
}; /* cheevos_cond_t.op */
enum
{
CHEEVOS_COND_TYPE_STANDARD,
CHEEVOS_COND_TYPE_PAUSE_IF,
CHEEVOS_COND_TYPE_RESET_IF,
CHEEVOS_COND_TYPE_LAST
}; /* cheevos_cond_t.type */
enum
{
CHEEVOS_DIRTY_TITLE = 1 << 0,
CHEEVOS_DIRTY_DESC = 1 << 1,
CHEEVOS_DIRTY_POINTS = 1 << 2,
CHEEVOS_DIRTY_AUTHOR = 1 << 3,
CHEEVOS_DIRTY_ID = 1 << 4,
CHEEVOS_DIRTY_BADGE = 1 << 5,
CHEEVOS_DIRTY_CONDITIONS = 1 << 6,
CHEEVOS_DIRTY_VOTES = 1 << 7,
CHEEVOS_DIRTY_DESCRIPTION = 1 << 8,
CHEEVOS_DIRTY_ALL = (1 << 9) - 1
};
typedef struct
{
unsigned size;
unsigned type;
unsigned bank_id;
unsigned value;
unsigned previous;
} cheevos_var_t;
typedef struct
{
unsigned type;
unsigned req_hits;
unsigned curr_hits;
cheevos_var_t source;
unsigned op;
cheevos_var_t target;
} cheevos_cond_t;
typedef struct
{
cheevos_cond_t *conds;
unsigned count;
const char* expression;
} cheevos_condset_t;
typedef struct
{
unsigned id;
const char *title;
const char *description;
const char *author;
const char *badge;
unsigned points;
unsigned dirty;
int active;
int modified;
cheevos_condset_t *condsets;
unsigned count;
} cheevo_t;
typedef struct
{
cheevo_t *cheevos;
unsigned count;
} cheevoset_t;
typedef struct
{
int loaded;
cheevoset_t core;
cheevoset_t unofficial;
char token[32];
async_job_t *jobs;
} cheevos_locals_t;
cheevos_locals_t cheevos_locals =
{
0,
{NULL, 0},
{NULL, 0},
{0},
NULL
};
cheevos_globals_t cheevos_globals =
{
0,
0
};
/*****************************************************************************
Supporting functions.
*****************************************************************************/
static uint32_t cheevos_djb2(const char* str, size_t length)
{
const unsigned char *aux = (const unsigned char*)str;
const unsigned char *end = aux + length;
uint32_t hash = 5381;
while (aux < end)
hash = (hash << 5) + hash + *aux++;
return hash;
}
#ifdef NDEBUG
#define http_get net_http_get
#else
static int http_get(const char **result, size_t *size, const char *url, retro_time_t *timeout)
{
int ret = net_http_get(result, size, url, timeout);
const char *msg;
switch (ret)
{
case NET_HTTP_GET_OK:
return ret;
case NET_HTTP_GET_MALFORMED_URL:
msg = "malformed url";
break;
case NET_HTTP_GET_CONNECT_ERROR:
msg = "connect error";
break;
case NET_HTTP_GET_TIMEOUT:
msg = "timeout";
break;
default:
msg = "?";
break;
}
RARCH_LOG("CHEEVOS error getting %s: %s\n", url, msg);
RARCH_LOG("CHEEVOS http result was %s\n", *result ? *result : "(null)");
return ret;
}
#endif
typedef struct
{
unsigned key_hash;
int is_key;
const char *value;
size_t length;
}
cheevo_getvalueud_t;
static int getvalue__json_key(void *userdata, const char *name, size_t length)
{
cheevo_getvalueud_t* ud = (cheevo_getvalueud_t*)userdata;
ud->is_key = cheevos_djb2(name, length) == ud->key_hash;
return 0;
}
static int getvalue__json_string(void *userdata, const char *string, size_t length)
{
cheevo_getvalueud_t* ud = (cheevo_getvalueud_t*)userdata;
if (ud->is_key)
{
ud->value = string;
ud->length = length;
ud->is_key = 0;
}
return 0;
}
static int getvalue__json_boolean(void *userdata, int istrue)
{
cheevo_getvalueud_t* ud = (cheevo_getvalueud_t*)userdata;
if ( ud->is_key )
{
ud->value = istrue ? "true" : "false";
ud->length = istrue ? 4 : 5;
ud->is_key = 0;
}
return 0;
}
static int getvalue__json_null(void *userdata)
{
cheevo_getvalueud_t* ud = (cheevo_getvalueud_t*)userdata;
if ( ud->is_key )
{
ud->value = "null";
ud->length = 4;
ud->is_key = 0;
}
return 0;
}
static int cheevos_get_value(const char *json, unsigned key_hash, char *value, size_t length)
{
static const jsonsax_handlers_t handlers =
{
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
getvalue__json_key,
NULL,
getvalue__json_string,
getvalue__json_string, /* number */
getvalue__json_boolean,
getvalue__json_null
};
cheevo_getvalueud_t ud;
ud.key_hash = key_hash;
ud.is_key = 0;
ud.length = 0;
*value = 0;
if (jsonsax_parse(json, &handlers, (void*)&ud) == JSONSAX_OK && ud.length < length)
{
strncpy(value, ud.value, length);
value[ud.length] = 0;
return 0;
}
return -1;
}
/*****************************************************************************
Count number of achievements in a JSON file.
*****************************************************************************/
typedef struct
{
int in_cheevos;
uint32_t field_hash;
unsigned core_count;
unsigned unofficial_count;
}
cheevos_countud_t;
static int count__json_end_array(void *userdata)
{
cheevos_countud_t* ud = (cheevos_countud_t*)userdata;
ud->in_cheevos = 0;
return 0;
}
static int count__json_key(void *userdata, const char *name, size_t length)
{
cheevos_countud_t* ud = (cheevos_countud_t*)userdata;
ud->field_hash = cheevos_djb2(name, length);
if (ud->field_hash == 0x69749ae1U /* Achievements */)
ud->in_cheevos = 1;
return 0;
}
static int count__json_number(void *userdata, const char *number, size_t length)
{
cheevos_countud_t* ud = (cheevos_countud_t*)userdata;
long flags;
if (ud->in_cheevos && ud->field_hash == 0x0d2e96b2U /* Flags */)
{
flags = strtol(number, NULL, 10);
if (flags == 3) /* core achievements */
ud->core_count++;
else if (flags == 5) /* unofficial achievements */
ud->unofficial_count++;
}
return 0;
}
static int count_cheevos(const char *json, unsigned *core_count, unsigned *unofficial_count)
{
static const jsonsax_handlers_t handlers =
{
NULL,
NULL,
NULL,
NULL,
NULL,
count__json_end_array,
count__json_key,
NULL,
NULL,
count__json_number,
NULL,
NULL
};
int res;
cheevos_countud_t ud;
ud.in_cheevos = 0;
ud.core_count = 0;
ud.unofficial_count = 0;
res = jsonsax_parse(json, &handlers, (void*)&ud);
*core_count = ud.core_count;
*unofficial_count = ud.unofficial_count;
return res;
}
/*****************************************************************************
Parse the MemAddr field.
*****************************************************************************/
static unsigned prefix_to_comp_size(char prefix)
{
/* Careful not to use ABCDEF here, this denotes part of an actual variable! */
switch( toupper( prefix ) )
{
case 'M': return CHEEVOS_VAR_SIZE_BIT_0;
case 'N': return CHEEVOS_VAR_SIZE_BIT_1;
case 'O': return CHEEVOS_VAR_SIZE_BIT_2;
case 'P': return CHEEVOS_VAR_SIZE_BIT_3;
case 'Q': return CHEEVOS_VAR_SIZE_BIT_4;
case 'R': return CHEEVOS_VAR_SIZE_BIT_5;
case 'S': return CHEEVOS_VAR_SIZE_BIT_6;
case 'T': return CHEEVOS_VAR_SIZE_BIT_7;
case 'L': return CHEEVOS_VAR_SIZE_NIBBLE_LOWER;
case 'U': return CHEEVOS_VAR_SIZE_NIBBLE_UPPER;
case 'H': return CHEEVOS_VAR_SIZE_EIGHT_BITS;
case 'X': return CHEEVOS_VAR_SIZE_THIRTYTWO_BITS;
default:
case ' ': return CHEEVOS_VAR_SIZE_SIXTEEN_BITS;
}
}
static unsigned read_hits(const char **memaddr)
{
const char *str = *memaddr;
unsigned num_hits = 0;
char *end;
if (*str == '(' || *str == '.')
{
num_hits = strtol(str + 1, &end, 10);
str = end + 1;
}
*memaddr = str;
return num_hits;
}
static unsigned parse_operator(const char **memaddr)
{
const char *str = *memaddr;
unsigned char op;
if (*str == '=' && str[1] == '=')
{
op = CHEEVOS_COND_OP_EQUALS;
str += 2;
}
else if (*str == '=')
{
op = CHEEVOS_COND_OP_EQUALS;
str++;
}
else if (*str == '!' && str[1] == '=')
{
op = CHEEVOS_COND_OP_NOT_EQUAL_TO;
str += 2;
}
else if (*str == '<' && str[1] == '=')
{
op = CHEEVOS_COND_OP_LESS_THAN_OR_EQUAL;
str += 2;
}
else if (*str == '<')
{
op = CHEEVOS_COND_OP_LESS_THAN;
str++;
}
else if (*str == '>' && str[1] == '=')
{
op = CHEEVOS_COND_OP_GREATER_THAN_OR_EQUAL;
str += 2;
}
else if (*str == '>')
{
op = CHEEVOS_COND_OP_GREATER_THAN;
str++;
}
else
{
/* TODO log the exception */
op = CHEEVOS_COND_OP_EQUALS;
}
*memaddr = str;
return op;
}
static void parse_var(cheevos_var_t *var, const char **memaddr)
{
const char *str = *memaddr;
unsigned base = 16;
char *end;
if (toupper(*str) == 'D' && str[1] == '0' && toupper(str[2]) == 'X')
{
/* d0x + 4 hex digits */
str += 3;
var->type = CHEEVOS_VAR_TYPE_DELTA_MEM;
}
else if (*str == '0' && toupper(str[1]) == 'X')
{
/* 0x + 4 hex digits */
str += 2;
var->type = CHEEVOS_VAR_TYPE_ADDRESS;
}
else
{
var->type = CHEEVOS_VAR_TYPE_VALUE_COMP;
if (toupper(*str) == 'H')
str++;
else
base = 10;
}
if (var->type != CHEEVOS_VAR_TYPE_VALUE_COMP)
{
var->size = prefix_to_comp_size(*str);
if (var->size != CHEEVOS_VAR_SIZE_SIXTEEN_BITS)
str++;
}
var->value = strtol(str, &end, base);
*memaddr = end;
}
static void parse_cond(cheevos_cond_t *cond, const char **memaddr)
{
const char* str = *memaddr;
if (*str == 'R' && str[1] == ':')
{
cond->type = CHEEVOS_COND_TYPE_RESET_IF;
str += 2;
}
else if (*str == 'P' && str[1] == ':')
{
cond->type = CHEEVOS_COND_TYPE_PAUSE_IF;
str += 2;
}
else
cond->type = CHEEVOS_COND_TYPE_STANDARD;
parse_var(&cond->source, &str);
cond->op = parse_operator(&str);
parse_var(&cond->target, &str);
cond->curr_hits = 0;
cond->req_hits = read_hits(&str);
*memaddr = str;
}
static unsigned count_cond_sets(const char *memaddr)
{
unsigned count = 0;
cheevos_cond_t cond;
do
{
do
{
while (*memaddr == ' ' || *memaddr == '_' || *memaddr == '|' || *memaddr == 'S')
memaddr++; /* Skip any chars up til the start of the achievement condition */
parse_cond(&cond, &memaddr);
}
while (*memaddr == '_' || *memaddr == 'R' || *memaddr == 'P'); /* AND, ResetIf, PauseIf */
count++;
}
while (*memaddr == 'S'); /* Repeat for all subconditions if they exist */
return count;
}
static unsigned count_conds_in_set(const char *memaddr, unsigned set)
{
unsigned index = 0;
unsigned count = 0;
cheevos_cond_t cond;
do
{
do
{
while (*memaddr == ' ' || *memaddr == '_' || *memaddr == '|' || *memaddr == 'S')
memaddr++; /* Skip any chars up til the start of the achievement condition */
parse_cond(&cond, &memaddr);
if (index == set)
count++;
}
while (*memaddr == '_' || *memaddr == 'R' || *memaddr == 'P'); /* AND, ResetIf, PauseIf */
}
while (*memaddr == 'S'); /* Repeat for all subconditions if they exist */
return count;
}
static void parse_memaddr(cheevos_cond_t *cond, const char *memaddr)
{
do
{
do
{
while (*memaddr == ' ' || *memaddr == '_' || *memaddr == '|' || *memaddr == 'S')
memaddr++; /* Skip any chars up til the start of the achievement condition */
parse_cond(cond++, &memaddr);
}
while (*memaddr == '_' || *memaddr == 'R' || *memaddr == 'P'); /* AND, ResetIf, PauseIf */
}
while (*memaddr == 'S'); /* Repeat for all subconditions if they exist */
}
/*****************************************************************************
Load achievements from a JSON string.
*****************************************************************************/
typedef struct
{
const char *string;
size_t length;
}
cheevos_field_t;
typedef struct
{
int in_cheevos;
unsigned core_count;
unsigned unofficial_count;
cheevos_field_t *field;
cheevos_field_t id, memaddr, title, desc, points, author;
cheevos_field_t modified, created, badge, flags;
}
cheevos_readud_t;
static INLINE const char *dupstr(const cheevos_field_t *field)
{
char *string = (char*)malloc(field->length + 1);
if (string)
{
memcpy ((void*)string, (void*)field->string, field->length);
string[field->length] = 0;
}
return string;
}
static int new_cheevo(cheevos_readud_t *ud)
{
int flags = strtol(ud->flags.string, NULL, 10);
const cheevos_condset_t *end;
unsigned set;
cheevos_condset_t *condset;
cheevo_t *cheevo;
if (flags == 3)
cheevo = cheevos_locals.core.cheevos + ud->core_count++;
else
cheevo = cheevos_locals.unofficial.cheevos + ud->unofficial_count++;
cheevo->id = strtol(ud->id.string, NULL, 10);
cheevo->title = dupstr(&ud->title);
cheevo->description = dupstr(&ud->desc);
cheevo->author = dupstr(&ud->author);
cheevo->badge = dupstr(&ud->badge);
cheevo->points = strtol(ud->points.string, NULL, 10);
cheevo->dirty = 0;
cheevo->active = 1; /* flags == 3; */
cheevo->modified = 0;
if (!cheevo->title || !cheevo->description || !cheevo->author || !cheevo->badge)
{
free((void*)cheevo->title);
free((void*)cheevo->description);
free((void*)cheevo->author);
free((void*)cheevo->badge);
return -1;
}
cheevo->count = count_cond_sets(ud->memaddr.string);
if (cheevo->count)
{
cheevo->condsets = (cheevos_condset_t*)malloc(cheevo->count * sizeof(cheevos_condset_t));
if (!cheevo->condsets)
return -1;
memset((void*)cheevo->condsets, 0, cheevo->count * sizeof(cheevos_condset_t));
end = cheevo->condsets + cheevo->count;
set = 0;
for (condset = cheevo->condsets; condset < end; condset++)
{
condset->count = count_conds_in_set(ud->memaddr.string, set++);
if (condset->count)
{
condset->conds = (cheevos_cond_t*)malloc(condset->count * sizeof(cheevos_cond_t));
if (!condset->conds)
return -1;
memset((void*)condset->conds, 0, condset->count * sizeof(cheevos_cond_t));
condset->expression = dupstr(&ud->memaddr);
parse_memaddr(condset->conds, ud->memaddr.string);
}
else
condset->conds = NULL;
}
}
return 0;
}
static int read__json_key( void *userdata, const char *name, size_t length)
{
cheevos_readud_t *ud = (cheevos_readud_t*)userdata;
uint32_t hash = cheevos_djb2(name, length);
ud->field = NULL;
if (hash == 0x69749ae1U /* Achievements */)
ud->in_cheevos = 1;
else if (ud->in_cheevos)
{
switch ( hash )
{
case 0x005973f2U: /* ID */ ud->field = &ud->id; break;
case 0x1e76b53fU: /* MemAddr */ ud->field = &ud->memaddr; break;
case 0x0e2a9a07U: /* Title */ ud->field = &ud->title; break;
case 0xe61a1f69U: /* Description */ ud->field = &ud->desc; break;
case 0xca8fce22U: /* Points */ ud->field = &ud->points; break;
case 0xa804edb8U: /* Author */ ud->field = &ud->author; break;
case 0xdcea4fe6U: /* Modified */ ud->field = &ud->modified; break;
case 0x3a84721dU: /* Created */ ud->field = &ud->created; break;
case 0x887685d9U: /* BadgeName */ ud->field = &ud->badge; break;
case 0x0d2e96b2U: /* Flags */ ud->field = &ud->flags; break;
}
}
return 0;
}
static int read__json_string(void *userdata, const char *string, size_t length)
{
cheevos_readud_t *ud = (cheevos_readud_t*)userdata;
if (ud->field)
{
ud->field->string = string;
ud->field->length = length;
}
return 0;
}
static int read__json_number(void *userdata, const char *number, size_t length)
{
cheevos_readud_t *ud = (cheevos_readud_t*)userdata;
if (ud->field)
{
ud->field->string = number;
ud->field->length = length;
}
return 0;
}
static int read__json_end_object(void *userdata)
{
cheevos_readud_t *ud = (cheevos_readud_t*)userdata;
if (ud->in_cheevos)
return new_cheevo(ud);
return 0;
}
static int read__json_end_array(void *userdata)
{
cheevos_readud_t *ud = (cheevos_readud_t*)userdata;
ud->in_cheevos = 0;
return 0;
}
static int cheevos_parse(const char *json)
{
static const jsonsax_handlers_t handlers =
{
NULL,
NULL,
NULL,
read__json_end_object,
NULL,
read__json_end_array,
read__json_key,
NULL,
read__json_string,
read__json_number,
NULL,
NULL
};
static int initialize = 1;
unsigned core_count, unofficial_count;
cheevos_readud_t ud;
/* Just return OK if cheevos are disabled. */
if (!config_get_ptr()->cheevos.enable)
return 0;
/* Count the number of achievements in the JSON file. */
if (count_cheevos(json, &core_count, &unofficial_count) != JSONSAX_OK)
return -1;
/* Allocate the achievements. */
cheevos_locals.core.cheevos = (cheevo_t*)malloc(core_count * sizeof(cheevo_t));
cheevos_locals.core.count = core_count;
cheevos_locals.unofficial.cheevos = (cheevo_t*)malloc(unofficial_count * sizeof(cheevo_t));
cheevos_locals.unofficial.count = unofficial_count;
if (!cheevos_locals.core.cheevos || !cheevos_locals.unofficial.cheevos)
{
free((void*)cheevos_locals.core.cheevos);
free((void*)cheevos_locals.unofficial.cheevos);
cheevos_locals.core.count = cheevos_locals.unofficial.count = 0;
return -1;
}
memset((void*)cheevos_locals.core.cheevos, 0, core_count * sizeof(cheevo_t));
memset((void*)cheevos_locals.unofficial.cheevos, 0, unofficial_count * sizeof(cheevo_t));
/* Load the achievements. */
ud.in_cheevos = 0;
ud.field = NULL;
ud.core_count = 0;
ud.unofficial_count = 0;
if (!jsonsax_parse(json, &handlers, (void*)&ud) == JSONSAX_OK)
{
cheevos_unload();
return -1;
}
if (initialize)
{
initialize = 0;
cheevos_locals.jobs = async_job_new();
}
return -(cheevos_locals.jobs == NULL);
}
/*****************************************************************************
Test all the achievements (call once per frame).
*****************************************************************************/
static const uint8_t *get_memory(unsigned offset)
{
size_t size = core.retro_get_memory_size( RETRO_MEMORY_SYSTEM_RAM );
uint8_t *memory;
if (offset < size)
{
memory = (uint8_t*)core.retro_get_memory_data(RETRO_MEMORY_SYSTEM_RAM);
return memory + offset;
}
offset -= size;
size = core.retro_get_memory_size(RETRO_MEMORY_SAVE_RAM);
if (offset < size)
{
memory = (uint8_t*)core.retro_get_memory_data(RETRO_MEMORY_SAVE_RAM);
return memory + offset;
}
offset -= size;
size = core.retro_get_memory_size(RETRO_MEMORY_VIDEO_RAM);
if (offset < size)
{
memory = (uint8_t*)core.retro_get_memory_data(RETRO_MEMORY_VIDEO_RAM);
return memory + offset;
}
offset -= size;
size = core.retro_get_memory_size(RETRO_MEMORY_RTC);
if (offset < size)
{
memory = (uint8_t*)core.retro_get_memory_data(RETRO_MEMORY_RTC);
return memory + offset;
}
return NULL;
}
static unsigned get_var_value(cheevos_var_t *var)
{
unsigned previous = var->previous;
unsigned live_val = 0;
const uint8_t *memory;
if (var->type == CHEEVOS_VAR_TYPE_VALUE_COMP)
return var->value;
if (var->type == CHEEVOS_VAR_TYPE_ADDRESS || var->type == CHEEVOS_VAR_TYPE_DELTA_MEM)
{
/* TODO Check with Scott if the bank id is needed */
memory = get_memory(var->value);
live_val = memory[0];
if (var->size >= CHEEVOS_VAR_SIZE_BIT_0 && var->size <= CHEEVOS_VAR_SIZE_BIT_7)
live_val = (live_val & (1 << (var->size - CHEEVOS_VAR_SIZE_BIT_0))) != 0;
else if (var->size == CHEEVOS_VAR_SIZE_NIBBLE_LOWER)
live_val &= 0x0f;
else if (var->size == CHEEVOS_VAR_SIZE_NIBBLE_UPPER)
live_val = (live_val >> 4) & 0x0f;
else if (var->size == CHEEVOS_VAR_SIZE_EIGHT_BITS)
; /* nothing */
else if (var->size == CHEEVOS_VAR_SIZE_SIXTEEN_BITS)
live_val |= memory[1] << 8;
else if (var->size == CHEEVOS_VAR_SIZE_THIRTYTWO_BITS)
{
live_val |= memory[1] << 8;
live_val |= memory[2] << 16;
live_val |= memory[3] << 24;
}
if (var->type == CHEEVOS_VAR_TYPE_DELTA_MEM)
{
var->previous = live_val;
return previous;
}
return live_val;
}
/* We shouldn't get here... */
return 0;
}
static int test_condition(cheevos_cond_t *cond)
{
unsigned sval = get_var_value(&cond->source);
unsigned tval = get_var_value(&cond->target);
switch (cond->op)
{
case CHEEVOS_COND_OP_EQUALS:
return sval == tval;
case CHEEVOS_COND_OP_LESS_THAN:
return sval < tval;
case CHEEVOS_COND_OP_LESS_THAN_OR_EQUAL:
return sval <= tval;
case CHEEVOS_COND_OP_GREATER_THAN:
return sval > tval;
case CHEEVOS_COND_OP_GREATER_THAN_OR_EQUAL:
return sval >= tval;
case CHEEVOS_COND_OP_NOT_EQUAL_TO:
return sval != tval;
default:
return 1;
}
}
static int test_cond_set(const cheevos_condset_t *condset, int *dirty_conds, int *reset_conds, int match_any)
{
int cond_valid = 0;
int set_valid = 1;
const cheevos_cond_t *end = condset->conds + condset->count;
cheevos_cond_t *cond;
/* Now, read all Pause conditions, and if any are true, do not process further (retain old state) */
for (cond = condset->conds; cond < end; cond++)
{
if (cond->type == CHEEVOS_COND_TYPE_PAUSE_IF)
{
/* Reset by default, set to 1 if hit! */
cond->curr_hits = 0;
if (test_condition(cond))
{
cond->curr_hits = 1;
*dirty_conds = 1;
/* Early out: this achievement is paused, do not process any further! */
return 0;
}
}
}
/* Read all standard conditions, and process as normal: */
for (cond = condset->conds; cond < end; cond++)
{
if (cond->type == CHEEVOS_COND_TYPE_PAUSE_IF || cond->type == CHEEVOS_COND_TYPE_RESET_IF)
continue;
if (cond->req_hits != 0 && cond->curr_hits >= cond->req_hits)
continue;
cond_valid = test_condition(cond);
if (cond_valid)
{
cond->curr_hits++;
*dirty_conds = 1;
/* Process this logic, if this condition is true: */
if (cond->req_hits == 0)
; /* Not a hit-based requirement: ignore any additional logic! */
else if (cond->curr_hits < cond->req_hits)
cond_valid = 0; /* Not entirely valid yet! */
if (match_any)
break;
}
/* Sequential or non-sequential? */
set_valid &= cond_valid;
}
/* Now, ONLY read reset conditions! */
for (cond = condset->conds; cond < end; cond++)
{
if (cond->type == CHEEVOS_COND_TYPE_RESET_IF)
{
cond_valid = test_condition(cond);
if (cond_valid)
{
*reset_conds = 1; /* Resets all hits found so far */
set_valid = 0; /* Cannot be valid if we've hit a reset condition. */
break; /* No point processing any further reset conditions. */
}
}
}
return set_valid;
}
static int reset_cond_set(cheevos_condset_t *condset, int deltas)
{
int dirty = 0;
const cheevos_cond_t *end = condset->conds + condset->count;
cheevos_cond_t *cond;
if (deltas)
{
for (cond = condset->conds; cond < end; cond++)
{
dirty |= cond->curr_hits != 0;
cond->curr_hits = 0;
cond->source.previous = cond->source.value;
cond->target.previous = cond->target.value;
}
}
else
{
for (cond = condset->conds; cond < end; cond++)
{
dirty |= cond->curr_hits != 0;
cond->curr_hits = 0;
}
}
return dirty;
}
static int test_cheevo(cheevo_t *cheevo)
{
int dirty_conds = 0;
int reset_conds = 0;
int ret_val = 0;
int ret_val_sub_cond = cheevo->count == 1;
cheevos_condset_t *condset = cheevo->condsets;
const cheevos_condset_t *end = condset + cheevo->count;
int dirty;
if (condset < end)
{
ret_val = test_cond_set(condset, &dirty_conds, &reset_conds, 0);
condset++;
}
while (condset < end)
{
int res = test_cond_set(condset, &dirty_conds, &reset_conds, 0);
ret_val_sub_cond |= res;
condset++;
}
if (dirty_conds)
cheevo->dirty |= CHEEVOS_DIRTY_CONDITIONS;
if (reset_conds)
{
dirty = 0;
for (condset = cheevo->condsets; condset < end; condset++)
dirty |= reset_cond_set(condset, 0);
if (dirty)
cheevo->dirty |= CHEEVOS_DIRTY_CONDITIONS;
}
return ret_val && ret_val_sub_cond;
}
static int cheevos_login(retro_time_t *timeout)
{
const char *username;
const char *password;
char request[256];
const char *json;
int res;
if (cheevos_locals.token[0])
return 0;
username = config_get_ptr()->cheevos.username;
password = config_get_ptr()->cheevos.password;
if (!username || !*username || !password || !*password)
{
rarch_main_msg_queue_push("Missing Retro Achievements account information", 0, 5 * 60, false);
rarch_main_msg_queue_push("Please fill in your account information in Settings", 0, 5 * 60, false);
RARCH_LOG("CHEEVOS username and/or password not informed\n");
return -1;
}
snprintf(
request, sizeof(request),
"http://retroachievements.org/dorequest.php?r=login&u=%s&p=%s",
username, password
);
request[sizeof(request) - 1] = 0;
if (!http_get(&json, NULL, request, timeout))
{
res = cheevos_get_value(json, 0x0e2dbd26U /* Token */, cheevos_locals.token, sizeof(cheevos_locals.token));
free((void*)json);
if (!res)
{
RARCH_LOG("CHEEVOS user token is '%s'\n", cheevos_locals.token);
return 0;
}
}
rarch_main_msg_queue_push("Retro Achievements login error", 0, 5 * 60, false);
rarch_main_msg_queue_push("Please make sure your account information is correct", 0, 5 * 60, false);
RARCH_LOG("CHEEVOS error getting user token\n");
return -1;
}
static void cheevo_unlocker(void *payload)
{
cheevo_t *cheevo = (cheevo_t*)payload;
char request[256];
const char *result;
if (!cheevos_login(NULL))
{
snprintf(
request, sizeof(request),
"http://retroachievements.org/dorequest.php?r=awardachievement&u=%s&t=%s&a=%u&h=%d",
config_get_ptr()->cheevos.username, cheevos_locals.token, cheevo->id, 0
);
request[sizeof(request) - 1] = 0;
RARCH_LOG("CHEEVOS awarding achievement %u: %s\n", cheevo->id, request);
if (!http_get(&result, NULL, request, NULL))
{
RARCH_LOG("CHEEVOS awarded achievement %u: %s\n", cheevo->id, result);
free((void*)result);
}
else
RARCH_LOG("CHEEVOS error awarding achievement %u\n", cheevo->id);
}
}
static void test_cheevo_set(const cheevoset_t *set)
{
const cheevo_t *end = set->cheevos + set->count;
cheevo_t *cheevo;
for (cheevo = set->cheevos; cheevo < end; cheevo++)
{
if (cheevo->active && test_cheevo(cheevo))
{
RARCH_LOG("CHEEVOS %s\n", cheevo->title);
RARCH_LOG("CHEEVOS %s\n", cheevo->description);
rarch_main_msg_queue_push(cheevo->title, 0, 3 * 60, false);
rarch_main_msg_queue_push(cheevo->description, 0, 5 * 60, false);
async_job_add(cheevos_locals.jobs, cheevo_unlocker, (void*)cheevo);
cheevo->active = 0;
}
}
}
void cheevos_test(void)
{
if (config_get_ptr()->cheevos.enable && !cheevos_globals.cheats_are_enabled && !cheevos_globals.cheats_were_enabled)
{
test_cheevo_set(&cheevos_locals.core);
if (config_get_ptr()->cheevos.test_unofficial)
test_cheevo_set(&cheevos_locals.unofficial);
}
}
/*****************************************************************************
Free the loaded achievements.
*****************************************************************************/
static void free_condset(const cheevos_condset_t *set)
{
free((void*)set->conds);
}
static void free_cheevo(const cheevo_t *cheevo)
{
free((void*)cheevo->title);
free((void*)cheevo->description);
free((void*)cheevo->author);
free((void*)cheevo->badge);
free_condset(cheevo->condsets);
}
static void free_cheevo_set(const cheevoset_t *set)
{
const cheevo_t *cheevo = set->cheevos;
const cheevo_t *end = cheevo + set->count;
while (cheevo < end)
{
free_cheevo(cheevo++);
}
free((void*)set->cheevos);
}
void cheevos_unload(void)
{
if (cheevos_locals.loaded)
{
free_cheevo_set(&cheevos_locals.core);
free_cheevo_set(&cheevos_locals.unofficial);
cheevos_locals.loaded = 0;
}
}
/*****************************************************************************
Load achievements from retroachievements.org.
*****************************************************************************/
static int cheevos_get_by_game_id(const char **json, unsigned game_id, retro_time_t *timeout)
{
char request[256];
/* Just return OK if cheevos are disabled. */
if (!config_get_ptr()->cheevos.enable)
return 0;
if (!cheevos_login(timeout))
{
snprintf(
request, sizeof(request),
"http://retroachievements.org/dorequest.php?r=patch&u=%s&g=%u&f=3&l=1&t=%s",
config_get_ptr()->cheevos.username, game_id, cheevos_locals.token
);
request[sizeof(request) - 1] = 0;
if (!http_get(json, NULL, request, timeout))
{
RARCH_LOG("CHEEVOS got achievements for game id %u\n", game_id);
return 0;
}
RARCH_LOG("CHEEVOS error getting achievements for game id %u\n", game_id);
}
return -1;
}
static unsigned cheevos_get_game_id(unsigned char *hash, retro_time_t *timeout)
{
char request[256];
const char* json;
char game_id[16];
int res;
RARCH_LOG(
"CHEEVOS getting game id for hash %02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x\n",
hash[ 0], hash[ 1], hash[ 2], hash[ 3],
hash[ 4], hash[ 5], hash[ 6], hash[ 7],
hash[ 8], hash[ 9], hash[10], hash[11],
hash[12], hash[13], hash[14], hash[15]
);
snprintf(
request, sizeof(request),
"http://retroachievements.org/dorequest.php?r=gameid&u=%s&m=%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x",
config_get_ptr()->cheevos.username,
hash[ 0], hash[ 1], hash[ 2], hash[ 3],
hash[ 4], hash[ 5], hash[ 6], hash[ 7],
hash[ 8], hash[ 9], hash[10], hash[11],
hash[12], hash[13], hash[14], hash[15]
);
request[sizeof(request) - 1] = 0;
if (!http_get(&json, NULL, request, timeout))
{
res = cheevos_get_value(json, 0xb4960eecU /* GameID */, game_id, sizeof(game_id));
free((void*)json);
if (!res)
{
RARCH_LOG("CHEEVOS got game id %s\n", game_id);
return strtoul(game_id, NULL, 10);
}
}
RARCH_LOG("CHEEVOS error getting game_id\n");
return 0;
}
static int cheevos_playing_activity(unsigned game_id, retro_time_t *timeout)
{
char request[256];
const char* json;
if (!cheevos_login(timeout))
{
snprintf(
request, sizeof(request),
"http://retroachievements.org/dorequest.php?r=postactivity&u=%s&t=%s&a=3&m=%u",
config_get_ptr()->cheevos.username, cheevos_locals.token, game_id
);
request[sizeof(request) - 1] = 0;
if (!http_get(&json, NULL, request, timeout))
{
free((void*)json);
RARCH_LOG("CHEEVOS posted playing game %u activity\n", game_id);
return 0;
}
else
RARCH_LOG("CHEEVOS error posting playing game %u activity\n", game_id);
}
return -1;
}
typedef struct
{
int is_element;
} cheevos_deactivate_t;
static int deactivate__json_index(void *userdata, unsigned int index)
{
cheevos_deactivate_t *ud = (cheevos_deactivate_t*)userdata;
ud->is_element = 1;
return 0;
}
static int deactivate__json_number(void *userdata, const char *number, size_t length)
{
cheevos_deactivate_t *ud = (cheevos_deactivate_t*)userdata;
cheevo_t* cheevo;
const cheevo_t* end;
long id;
int found;
if (ud->is_element)
{
ud->is_element = 0;
id = strtol(number, NULL, 10);
found = 0;
for (cheevo = cheevos_locals.core.cheevos, end = cheevo + cheevos_locals.core.count; cheevo < end; cheevo++)
{
if (cheevo->id == id)
{
cheevo->active = 0;
found = 1;
break;
}
}
if (!found)
{
for (cheevo = cheevos_locals.unofficial.cheevos, end = cheevo + cheevos_locals.unofficial.count; cheevo < end; cheevo++)
{
if (cheevo->id == id)
{
cheevo->active = 0;
break;
}
}
}
}
return 0;
}
static int cheevos_deactivate_unlocks(unsigned game_id, retro_time_t *timeout)
{
/* Only call this function after the cheevos have been loaded. */
static const jsonsax_handlers_t handlers =
{
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
deactivate__json_index,
NULL,
deactivate__json_number,
NULL,
NULL
};
char request[256];
const char* json;
cheevos_deactivate_t ud;
int res;
if (!cheevos_login(timeout))
{
snprintf(
request, sizeof(request),
"http://retroachievements.org/dorequest.php?r=unlocks&u=%s&t=%s&g=%u&h=0",
config_get_ptr()->cheevos.username, cheevos_locals.token, game_id
);
request[sizeof(request) - 1] = 0;
if (!http_get(&json, NULL, request, timeout))
{
ud.is_element = 0;
res = jsonsax_parse(json, &handlers, (void*)&ud);
free((void*)json);
if (res == JSONSAX_OK)
{
RARCH_LOG("CHEEVOS deactivated unlocked achievements\n");
return 0;
}
}
}
RARCH_LOG("CHEEVOS error deactivating unlocked achievements\n");
return -1;
}
#define CHEEVOS_EIGHT_MB (8 * 1024 * 1024)
int cheevos_load(const void *data, size_t size)
{
const char *json;
MD5_CTX ctx, saved_ctx;
retro_time_t timeout;
char buffer[4096];
size_t len;
unsigned char hash[16];
unsigned game_id;
/* Just return OK if cheevos are disabled. */
if (!config_get_ptr()->cheevos.enable)
return 0;
MD5_Init(&ctx);
MD5_Update(&ctx, data, size);
saved_ctx = ctx;
MD5_Final(hash, &ctx);
timeout = 15000000;
game_id = cheevos_get_game_id(hash, &timeout);
if (!game_id && size < CHEEVOS_EIGHT_MB)
{
/* Maybe the content is a SNES game, continue MD5 with zeroes up to 8 MB. */
size = CHEEVOS_EIGHT_MB - size;
memset((void*)buffer, 0, sizeof(buffer));
do
{
len = sizeof(buffer);
if (len > size)
len = size;
MD5_Update(&saved_ctx, (void*)buffer, len);
size -= len;
}
while (size);
MD5_Final(hash, &saved_ctx);
game_id = cheevos_get_game_id(hash, &timeout);
}
if (game_id)
{
cheevos_playing_activity(game_id, &timeout);
if (!cheevos_get_by_game_id(&json, game_id, &timeout))
{
if (!cheevos_parse(json))
{
cheevos_deactivate_unlocks(game_id, &timeout);
free((void*)json);
cheevos_locals.loaded = 1;
return 0;
}
free((void*)json);
}
rarch_main_msg_queue_push("Error loading achievements", 0, 5 * 60, false);
}
else
rarch_main_msg_queue_push("This game doesn't feature achievements", 0, 5 * 60, false);
cheevos_locals.loaded = 0;
return -1;
}
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