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RetroArch/cheevos.c
Andre Leiradella 11d89ba289 don't even try to load achievements if they're disabled
2015-10-18 16:02:36 -02:00

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/* RetroArch - A frontend for libretro.
* Copyright (C) 2010-2014 - Hans-Kristian Arntzen
* Copyright (C) 2011-2015 - 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 <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <malloc.h>
#include <ctype.h>
#include <configuration.h>
#include <formats/jsonsax.h>
#include <net/net_http.h>
#include <rhash.h>
#include <performance.h>
#include <runloop.h>
#include <retro_log.h>
#include "cheevos.h"
#include "dynamic.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;
static cheevoset_t core_cheevos = { NULL, 0 };
static cheevoset_t unofficial_cheevos = { NULL, 0 };
static char token[ 32 ] = { 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;
}
/*****************************************************************************
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;
if ( ud->in_cheevos && ud->field_hash == 0x0d2e96b2U /* Flags */ )
{
long 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;
char* end;
unsigned num_hits = 0;
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;
char* end;
unsigned base = 16;
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 )
{
const cheevos_condset_t* end;
unsigned set;
cheevos_condset_t* condset;
cheevo_t* cheevo;
int flags = strtol( ud->flags.string, NULL, 10 );
if ( flags == 3 )
{
cheevo = core_cheevos.cheevos + ud->core_count++;
}
else
{
cheevo = unofficial_cheevos.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;
}
int cheevos_load( 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
};
if ( !config_get_ptr()->cheevos.enable )
{
/* Just return OK if cheevos are disabled. */
return 0;
}
/* Count the number of achievements in the JSON file. */
unsigned core_count, unofficial_count;
cheevos_readud_t ud;
if ( count_cheevos( json, &core_count, &unofficial_count ) != JSONSAX_OK )
{
return -1;
}
/* Allocate the achievements. */
core_cheevos.cheevos = (cheevo_t*)malloc( core_count * sizeof( cheevo_t ) );
core_cheevos.count = core_count;
unofficial_cheevos.cheevos = (cheevo_t*)malloc( unofficial_count * sizeof( cheevo_t ) );
unofficial_cheevos.count = unofficial_count;
if ( !core_cheevos.cheevos || !unofficial_cheevos.cheevos )
{
free( (void*)core_cheevos.cheevos );
free( (void*)unofficial_cheevos.cheevos );
core_cheevos.count = unofficial_cheevos.count = 0;
return -1;
}
memset( (void*)core_cheevos.cheevos, 0, core_count * sizeof( cheevo_t ) );
memset( (void*)unofficial_cheevos.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;
}
return 0;
}
/*****************************************************************************
Test all the achievements (call once per frame).
*****************************************************************************/
static const uint8_t* get_memory( unsigned offset )
{
uint8_t* memory;
size_t size = core.retro_get_memory_size( RETRO_MEMORY_SYSTEM_RAM );
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;
int pause_active = 0;
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 )
{
/* Not entirely valid yet! */
cond_valid = 0;
}
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 dirty;
int ret_val_sub_cond = cheevo->count == 1;
cheevos_condset_t* condset = cheevo->condsets;
const cheevos_condset_t* end = condset + cheevo->count;
if ( condset < end )
{
ret_val = test_cond_set( condset, &dirty_conds, &reset_conds, 0 );
if ( ret_val ) RARCH_LOG( "CHEEVOS %s\n", condset->expression );
condset++;
}
while ( condset < end )
{
int res = test_cond_set( condset, &dirty_conds, &reset_conds, 0 );
ret_val_sub_cond |= res;
if ( res ) RARCH_LOG( "CHEEVOS %s\n", condset->expression );
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 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 );
cheevo->active = 0;
}
}
}
void cheevos_test( void )
{
if ( config_get_ptr()->cheevos.enable )
{
test_cheevo_set( &core_cheevos );
if ( config_get_ptr()->cheevos.test_unofficial )
{
test_cheevo_set( &unofficial_cheevos );
}
}
}
/*****************************************************************************
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 )
{
free_cheevo_set( &core_cheevos );
free_cheevo_set( &unofficial_cheevos );
}
/*****************************************************************************
Load achievements from retroachievements.org.
*****************************************************************************/
static const char* cheevos_http_get( const char* url, size_t* size )
{
#ifdef HAVE_NETWORKING
struct http_connection_t* conn;
struct http_t* http;
uint8_t* data;
size_t length;
char* result;
RARCH_LOG( "CHEEVOS http get %s\n", url );
conn = net_http_connection_new( url );
if ( !conn )
{
return NULL;
}
while ( !net_http_connection_iterate( conn ) )
{
/* nothing */
}
if ( !net_http_connection_done( conn ) )
{
error1:
net_http_connection_free( conn );
return NULL;
}
http = net_http_new( conn );
if ( !http )
{
goto error1;
}
while ( !net_http_update( http, NULL, NULL ) )
{
/* nothing */
}
data = net_http_data( http, &length, false );
if ( data )
{
result = (char*)malloc( length + 1 );
memcpy( (void*)result, (void*)data, length );
result[ length ] = 0;
}
else
{
result = NULL;
}
net_http_delete( http );
net_http_connection_free( conn );
RARCH_LOG( "CHEEVOS http result is %s\n", result );
if ( size )
{
*size = length;
}
return (char*)result;
#else /* HAVE_NETWORKING */
RARCH_LOG( "CHEEVOS http get %s\n", url );
RARCH_ERROR( "CHEEVOS Network unavailable\n" );
if ( size )
{
*size = 0;
}
return NULL;
#endif /* HAVE_NETWORKING */
}
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;
}
static int cheevos_login( void )
{
char request[ 256 ];
const char* json;
int res;
if ( !token[ 0 ] )
{
snprintf(
request, sizeof( request ),
"http://retroachievements.org/dorequest.php?r=login&u=%s&p=%s",
config_get_ptr()->cheevos.user_name, config_get_ptr()->cheevos.password
);
request[ sizeof( request ) - 1 ] = 0;
json = cheevos_http_get( request, NULL );
if ( json )
{
res = cheevos_get_value( json, 0x0e2dbd26U /* Token */, token, sizeof( token ) );
free( (void*)json );
if ( !res )
{
RARCH_LOG( "CHEEVOS user token is '%s'\n", token );
return 0;
}
}
RARCH_LOG( "CHEEVOS error getting user token\n" );
}
return -1;
}
int cheevos_get_by_game_id( const char** json, unsigned game_id )
{
char request[ 256 ];
if ( !config_get_ptr()->cheevos.enable )
{
/* Just return OK if cheevos are disabled. */
return 0;
}
if ( !cheevos_login() )
{
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.user_name, game_id, token
);
request[ sizeof( request ) - 1 ] = 0;
*json = cheevos_http_get( request, NULL );
if ( *json )
{
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 )
{
char request[ 256 ];
const char* json;
char game_id[ 16 ];
int res;
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.user_name,
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;
json = cheevos_http_get( request, NULL );
if ( json )
{
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;
}
#define CHEEVOS_EIGHT_MB ( 8 * 1024 * 1024 )
int cheevos_get_by_content( const char** json, const void* data, size_t size )
{
MD5_CTX ctx, saved_ctx;
char buffer[ 4096 ];
size_t len;
unsigned char hash[ 16 ];
char request[ 256 ];
unsigned game_id;
int res;
if ( !config_get_ptr()->cheevos.enable )
{
/* Just return OK if cheevos are disabled. */
return 0;
}
MD5_Init( &ctx );
MD5_Update( &ctx, data, size );
saved_ctx = ctx;
MD5_Final( hash, &ctx );
game_id = cheevos_get_game_id( hash );
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 );
}
return game_id ? cheevos_get_by_game_id( json, game_id ) : -1;
}
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