/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 *   Mupen64plus - romchache.c                                             *
 *   Mupen64Plus homepage: http://code.google.com/p/mupen64plus/           *
 *   Copyright (C) 2008 Tillin9                                            *
 *                                                                         *
 *   This program 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 Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 *   This program 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 this program; if not, write to the                         *
 *   Free Software Foundation, Inc.,                                       *
 *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.          *
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

#include <stdlib.h>
#include <stdio.h>
#include <string.h>

#include <zlib.h>

#include "winlnxdefs.h"
#include "romcache.h"
#include "config.h"
#include "rom.h"
#include "main.h"
#include "translate.h"

#include "../opengl/osd.h"

#define DEFAULT 16

/* Rom database necessary even in GUI=NONE due to Eeprom issue for ROM loading.
 * Possible SoftHack or other necessary compatibility settings as well.
 */
void romdatabase_open(void);
void romdatabase_close(void);

_romdatabase g_romdatabase;
romdatabase_entry empty_entry;

/* All RCS thread and caching functions aren't needed if compiling GUI=NONE */
#ifndef NO_GUI
#include <iconv.h>

#include <errno.h>

#include <limits.h> /* PATH_MAX */
#include <dirent.h> /* Directory support. */

#include <sys/stat.h> /* Includes for POSIX file status.*/
#include <sys/types.h>

#include "7zip/Types.h"
#include "7zip/7zCrc.h"
#include "../memory/memory.h" /* sl() macro for CRCs. */

#include "md5.h"
#include "gui.h"
#include "util.h"

#include <SDL.h>
#include <SDL_thread.h>

#define UPDATE_FREQUENCY 12
#define RCS_VERSION "RCS1.1"

rom_cache g_romcache;
static char cache_filename[PATH_MAX];

static const char* romextensions[] =
{
 ".v64", ".z64", ".n64", ".gz", ".zip", ".bz2", ".lzma", ".7z", NULL
};

static void scan_dir(const char* dirname, int* romcounter);
int load_initial_cache(void);

static void clear_cache(void)
{
    cache_entry *entry, *entrynext;

    if(g_romcache.length!=0)
        {
        entry = g_romcache.top;
        do
            {
            entrynext = entry->next;
            free(entry);
            entry = entrynext;
            --g_romcache.length;
            }
        while (entry!=NULL);
        g_romcache.last = NULL;
        }
}

static int write_cache_file(void)
{
    gzFile* gzfile;

    if((gzfile = gzopen(cache_filename, "wb"))==NULL)
        {
        printf("Could not create cache file %s\n", cache_filename);
        return 0;
        }

    int i = 0;
    gzwrite(gzfile, &i, sizeof(int));
    gzwrite(gzfile, RCS_VERSION, 6*sizeof(char));
    gzwrite(gzfile, &g_romcache.length, sizeof(unsigned int));

    if(g_romcache.length!=0)
       {
       cache_entry* entry;
       entry = g_romcache.top;
       do
            {
            gzwrite(gzfile, entry->md5, 16*sizeof(md5_byte_t));
            gzwrite(gzfile, &entry->timestamp, sizeof(time_t));
            gzwrite(gzfile, entry->filename, PATH_MAX*sizeof(char));
            gzwrite(gzfile, entry->usercomments, COMMENT_MAXLENGTH*sizeof(char));
            gzwrite(gzfile, &entry->internalname, 80*sizeof(char));
            gzwrite(gzfile, &entry->compressiontype, sizeof(unsigned char));
            gzwrite(gzfile, &entry->imagetype, sizeof(unsigned char));
            gzwrite(gzfile, &entry->cic, sizeof(unsigned char));
            gzwrite(gzfile, &entry->countrycode, sizeof(unsigned short));
            gzwrite(gzfile, &entry->archivefile, sizeof(unsigned int));
            gzwrite(gzfile, &entry->crc1, sizeof(unsigned int));
            gzwrite(gzfile, &entry->crc2, sizeof(unsigned int));
            gzwrite(gzfile, &entry->romsize, sizeof(int));
            entry = entry->next;
            }
        while (entry!=NULL);
        }

    gzclose(gzfile);
    return 1;
}

static void rebuild_cache_file(void)
{
    char path[PATH_MAX], buffer[PATH_MAX];
    char* file;
    unsigned char match;
    int counter, oldlength;
    struct stat filestatus;

    /* Scrub cache, if user removed rom directories remove roms. */
    cache_entry *entry, *entryprevious, *entrynext;

    if(g_romcache.length!=0)
        {
        oldlength = g_romcache.length;

        entryprevious = entry = g_romcache.top;
        while (entry != NULL)
            {
            for(match = counter = 0; counter < config_get_number("NumRomDirs", 0); ++counter)
                {
                snprintf(buffer, sizeof(buffer), "RomDirectory[%d]", counter);
                snprintf(path, sizeof(path), "%s", config_get_string(buffer, "/"));

                if(config_get_bool("RomDirsScanRecursive", FALSE))
                    {
                    if(strncmp(entry->filename, path, strlen(path))==0)
                        {
                        match = 1;
                        break;
                        }
                    }
                else
                    {
                    file = dirfrompath(entry->filename);
                    if(strlen(file)==strlen(path)&&strncmp(file, path, strlen(path))==0)
                        {
                        free(file);
                        match = 1;
                        break;
                        }
                    free(file);
                    }
                }

            /* Check rom is valid. */
            if(!match||stat(entry->filename, &filestatus)==-1)
                {
                if(entry==g_romcache.top)
                    g_romcache.top = entry->next; 
                if(entryprevious)
                    entryprevious->next = entry->next;
                entrynext = entry->next;
                entry = NULL;
                free(entry);
                --g_romcache.length;
                }
            else
                {
                entrynext = entry->next;
                entryprevious = entry;
                }

            entry = entrynext;
            };

        if(g_romcache.length!=oldlength)
            g_romcache.clear = 1;

        g_romcache.last = entryprevious;
        }

    int romcounter = 0;

    /* Re-scan directories. */
    for(counter = 0; counter < config_get_number("NumRomDirs", 0); ++counter)
        {
        snprintf(buffer, sizeof(buffer), "RomDirectory[%d]", counter);
        snprintf(path, sizeof(path), "%s", config_get_string(buffer, ""));
        if(path[strlen(path)-1]!='/')
            {
            strncat(path, "/", sizeof(path));
            path[sizeof(path)-1] = '\0';
            }
        printf("Scanning... %s\n", path);
        scan_dir(path, &romcounter);
        }

    write_cache_file();
}

/* Entry point for the RCS thread. Sets up local variables and enters task loop.
 * After initially loading and rescanning, thread sleeps unless asked to refresh
 * cache (generally by user action in the GUI).
 */

int rom_cache_system(void* _arg)
{
    char* buffer;
    g_romcache.rcspause = 0;
    g_romcache.clear = 0;

    /* Setup job parser. */
    while (g_romcache.rcstask != RCS_SHUTDOWN)
        {
        /* Uncomment to debug RCS task. */
        /* printf("Task: %d\n", g_romcache.rcstask); */
        switch(g_romcache.rcstask)
            {
            case RCS_INIT:
                g_romcache.rcstask = RCS_BUSY;
                buffer = (char*)config_get_string("RomCacheFile", NULL);
                if(buffer==NULL)
                    {
                    buffer = (char*)malloc(PATH_MAX*sizeof(char));
                    snprintf(buffer, PATH_MAX, "%s%s", get_configpath(), "rombrowser.cache");
                    config_put_string("RomCacheFile", buffer);
                    }

                snprintf(cache_filename, sizeof(cache_filename), "%s", buffer);

                if(load_initial_cache())
                    gui_update_rombrowser(g_romcache.length, g_romcache.clear);

                remove(cache_filename);
                main_message(1, 1, 0, OSD_BOTTOM_LEFT, tr("Rescanning rom cache."));
                rebuild_cache_file();
                gui_update_rombrowser(g_romcache.length, g_romcache.clear);

                main_message(1, 1, 0, OSD_BOTTOM_LEFT, tr("Rom cache up to date. %d ROM%s."), g_romcache.length, (g_romcache.length==1) ? "" : "s");
                if(g_romcache.rcstask==RCS_BUSY)
                   g_romcache.rcstask = RCS_SLEEP;
                break;
            case RCS_WRITE_CACHE:
                g_romcache.rcstask = RCS_BUSY;
                remove(cache_filename);
                write_cache_file();
                if(g_romcache.rcstask==RCS_BUSY)
                    g_romcache.rcstask = RCS_SLEEP;
                break;
            case RCS_RESCAN:
                g_romcache.rcstask = RCS_BUSY;

                main_message(1, 1, 0, OSD_BOTTOM_LEFT, tr("Rescanning rom cache."));
                rebuild_cache_file();
                gui_update_rombrowser(g_romcache.length, g_romcache.clear);
                main_message(1, 1, 0, OSD_BOTTOM_LEFT, tr("Rom cache up to date. %d ROM%s."), g_romcache.length, (g_romcache.length==1) ? "" : "s");
                g_romcache.clear = 0;

                if(g_romcache.rcstask==RCS_BUSY)
                    g_romcache.rcstask = RCS_SLEEP;
                break;
            case RCS_SLEEP:
                SDL_Delay(100); /* Sleep to not use any CPU power. */
                break;
            }
        }

    printf("Rom cache system terminated!\n");
    clear_cache();
    SDL_WaitThread(g_RomCacheThread, NULL);
    return 1;
}

/* Given a pointer to the memory space of a valid ROM, and its size in entry->romsize
 * fill md5, inientry, countrycode, crc1, crc2, internalname, and cic properties of entry. 
 */
void fill_entry(cache_entry* entry, unsigned char* localrom)
{
    /* Compute md5. */
    md5_state_t state;

    md5_init(&state);
    md5_append(&state, (const md5_byte_t *)localrom, entry->romsize);
    md5_finish(&state, entry->md5);

    entry->inientry = ini_search_by_md5(entry->md5);

    /* See rom.h for header layout. */
    entry->countrycode = (unsigned short)*(localrom+0x3E);
    entry->crc1 = sl(*(unsigned int*)(localrom+0x10));
    entry->crc2 = sl(*(unsigned int*)(localrom+0x14));

    /* Internal name is encoded in SHIFT-JIS. Attempt to convert to UTF-8 so that
    GUIs and (ideally) Rice can use this for Japanese titles in a moderm environment. */
    iconv_t conversion = iconv_open ("UTF-8", "SHIFT-JIS");
    if(conversion==(iconv_t)-1)
        snprintf(entry->internalname, 20, "%s", (char*)localrom+0x20); 
    else
        {
        char *shiftjis, *shiftjisstart, *utf8, *utf8start;
        size_t shiftjislength = 20;
        size_t utf8length = 80; 
        shiftjisstart = shiftjis = (char*)calloc(20,sizeof(char));
        utf8start = utf8 = (char*)calloc(81,sizeof(char));

        snprintf(shiftjis, 20, "%s", (char*)localrom+0x20);

        iconv(conversion, &shiftjis, &shiftjislength, &utf8, &utf8length);
        iconv_close(conversion);

        snprintf(entry->internalname, sizeof(entry->internalname), "%s", utf8start);

        free(shiftjisstart);
        free(utf8start);
        }

    /* Detect CIC copy protection boot chip by CRCing the boot code. */
    long long CRC = 0;
    int counter;
    for(counter = 0x40/4; counter < 0x1000/4; ++counter)
        CRC += ((unsigned int*)localrom)[counter];

    switch(CRC)
        {
        case 0x000000A0F26F62FELL:
            entry->cic = CIC_NUS_6101;
            break;
        case 0x000000A316ADC55ALL:
           entry->cic = CIC_NUS_6102;
            break;
        case 0x000000A9229D7C45LL:
            entry->cic = CIC_NUS_6103;
            break;
        case 0x000000F8B860ED00LL:
            entry->cic = CIC_NUS_6105;
            break;
        case 0x000000BA5BA4B8CDLL:
            entry->cic = CIC_NUS_6106;
            break;
        default:
            entry->cic = CIC_NUS_6102;
        }
}

static void scan_dir(const char* directoryname, int* romcounter)
{
    char filename[PATH_MAX];
    char fullpath[PATH_MAX];
    char* extension;

    DIR* directory; 
    struct dirent* directoryentry;
    struct stat filestatus;

    cache_entry* entry;
    int found;

    directory = opendir(directoryname);
    if(!directory)
        {
        printf("Could not open directory '%s': %s\n", directoryname, strerror(errno));
        return;
        }

    int counter;

    while ((directoryentry = readdir(directory)))
        {
        if(directoryentry->d_name[0]=='.') /* Skip .,.., or hidden files. */
            continue;
        snprintf(filename, PATH_MAX-1, "%s%s", directoryname, directoryentry->d_name);

#ifdef __WIN32__
        snprintf(fullpath, PATH_MAX-1, "%s", filename);
#else
        /* Use real path (maybe it's a link) */
        if(realpath(filename, fullpath))
            snprintf(fullpath, PATH_MAX-1, "%s", filename);
#endif

        /* If we can't get information, move to next file. */
        if(stat(fullpath, &filestatus)==-1)
            {
            printf("Could not open file '%s': %s\n", fullpath, strerror(errno));
            continue; 
            }

        /* Handle recursive scanning. */
        if(config_get_bool("RomDirsScanRecursive", 0))
            {
            if(S_ISDIR(filestatus.st_mode))
                {
                strncat(filename, "/", sizeof(filename));
                filename[sizeof(filename)-1] = '\0';
                scan_dir(filename, romcounter);
                continue;
                }
            }

        /* Check if file has a supported extension. */
        extension = strrchr(filename, '.');
        if(!extension)
            continue;
        for(counter = 0; romextensions[counter]; ++counter)
            {
            if(!strcasecmp(extension,romextensions[counter]))
                break;
            }
        if(!romextensions[counter])
            continue;

        found = 0; /* Found controls whether its found in the cache. */
        if(g_romcache.length!=0)
            {
            entry = g_romcache.top;
            do
               {
               if(strncmp(entry->filename, filename, PATH_MAX)==0)
                     {
                     found = 1;
                     break;
                     }
               entry = entry->next;
               }
            while (entry != NULL);
            }

        entry = (cache_entry*)calloc(1,sizeof(cache_entry));
        if(entry==NULL)
            {
            fprintf(stderr, "%s, %d: Out of memory!\n", __FILE__, __LINE__);
            continue;
            }

        if(found==0)
            {
            snprintf(entry->filename, PATH_MAX, "%s", filename);

            unsigned char* localrom;

            /* Uncomment to debug file handling. */
            /* printf("File: %s\n", filename); */

            UInt32 blockIndex = 0xFFFFFFFF;
            Byte* outBuffer = NULL;
            size_t outBufferSize = 0;

            CFileInStream archiveStream;
            archiveStream.File=NULL;
            archiveStream.InStream.Read = SzFileReadImp;
            archiveStream.InStream.Seek = SzFileSeekImp;

            CArchiveDatabaseEx db;
            SzArDbExInit(&db);
            CrcGenerateTable();

            unsigned int archivefile = 0;

             /* Testload to see if we're a valid rom. Functions in rom.c. */
            if((localrom=load_single_rom(filename, &entry->romsize, &entry->compressiontype, &entry->romsize))==NULL)
                {
                if((localrom=load_archive_rom(filename, &entry->romsize, &entry->compressiontype, &entry->romsize, &archivefile, &blockIndex, &outBuffer, &outBufferSize, &archiveStream, &db))==NULL)
                    {
                    free(entry);
                    continue; 
                    }
                }

            /* Multi-rom archive? */
            int multi;
            do
                {
                multi = 0;
                swap_rom(localrom, &entry->imagetype, entry->romsize);
                fill_entry(entry, localrom);
                free(localrom);

                entry->timestamp = filestatus.st_mtime;
                entry->archivefile = archivefile;
                ++archivefile;

                /* Actually add rom to cache. */
                if(g_romcache.length==0)
                    {
                    g_romcache.top = entry; 
                    g_romcache.last = entry; 
                    ++g_romcache.length;
                    }
                else
                    {
                    g_romcache.last->next = entry;
                    g_romcache.last = entry;
                    ++g_romcache.length;
                    }
                printf("Added ROM: %s\n", entry->inientry->goodname);
                ++*romcounter;
                if(*romcounter%UPDATE_FREQUENCY==0)
                    {
                    gui_update_rombrowser(g_romcache.length, g_romcache.clear); 
                    main_message(1, 1, 0, OSD_BOTTOM_LEFT, tr("Added ROMs %d-%d."), g_romcache.length-UPDATE_FREQUENCY+1, g_romcache.length);
                    write_cache_file();
                    }

                if(entry->compressiontype==ZIP_COMPRESSION||entry->compressiontype==SZIP_COMPRESSION)
                    {
                    entry = (cache_entry*)calloc(1, sizeof(cache_entry));
                    snprintf(entry->filename, PATH_MAX, "%s", filename);

                    if((localrom=load_archive_rom(filename, &entry->romsize, &entry->compressiontype, &entry->romsize, &archivefile, &blockIndex, &outBuffer, &outBufferSize, &archiveStream, &db))!=NULL)
                        {
                        multi = 1; 
                        if(entry==NULL)
                            {
                            fprintf(stderr, "%s, %d: Out of memory!\n", __FILE__, __LINE__);
                            continue; 
                            }
                        }
                    }
                }
            while (multi);
            if(outBuffer)
                free(outBuffer);
            if(archiveStream.File)
                fclose(archiveStream.File);
            SzArDbExFree(&db, free);
            }

        /* Pause if user open a ROM and starts emulation. Toggled in rom.c. */
        while (g_romcache.rcspause)
            SDL_Delay(100);
        }
     closedir(directory);
 }

int load_initial_cache(void)
{
    int counter;
    char header[6];
    cache_entry *entry;
    struct stat filestatus;

    gzFile* gzfile;

    if((gzfile = gzopen(cache_filename,"rb"))==NULL)
        {
        printf("Could not open cachefile %s\n", cache_filename);
        return 0;
        }

    gzread(gzfile, &header, sizeof(int));
    if(!gzread(gzfile, &header, 6*sizeof(char))||strncmp(header, RCS_VERSION,6)!=0)
        {
        printf("Rom cache corrupt or from previous version.\n");
        return 0;
        }

    gzread(gzfile, &g_romcache.length, sizeof(unsigned int));
    for(counter = 0; counter < g_romcache.length; ++counter)
        {
        entry = (cache_entry*)calloc(1, sizeof(cache_entry));

        if(!entry)
            {
            fprintf(stderr, "%s, %d: Out of memory!\n", __FILE__, __LINE__);
            return 0;
            }

        gzread(gzfile, entry->md5, 16*sizeof(md5_byte_t));
        gzread(gzfile, &entry->timestamp, sizeof(time_t));
        gzread(gzfile, entry->filename, PATH_MAX*sizeof(char));
        gzread(gzfile, entry->usercomments, COMMENT_MAXLENGTH*sizeof(char));
        gzread(gzfile, entry->internalname, 80*sizeof(char));
        gzread(gzfile, &entry->compressiontype, sizeof(unsigned char));
        gzread(gzfile, &entry->imagetype, sizeof(unsigned char));
        gzread(gzfile, &entry->cic, sizeof(unsigned char));
        gzread(gzfile, &entry->countrycode, sizeof(unsigned short));
        gzread(gzfile, &entry->archivefile, sizeof(unsigned int));
        gzread(gzfile, &entry->crc1, sizeof(unsigned int));
        gzread(gzfile, &entry->crc2, sizeof(unsigned int));
        gzread(gzfile, &entry->romsize, sizeof(int));

        /* Check rom is valid. */
        if(stat(entry->filename, &filestatus)==-1)
            {
            free(entry); /* If we can't get into make sure to */
            --counter;   /* Update counters before continuing. */
            --g_romcache.length;
            continue;
            }

        entry->next = NULL;

        if(entry->timestamp==filestatus.st_mtime)
            {
            /* Actually add rom to cache. */
            entry->inientry = ini_search_by_md5(entry->md5);

            if(counter==0)
                {
                g_romcache.top = entry; 
                g_romcache.last = entry; 
                }
            else
                {
                g_romcache.last->next = entry;
                g_romcache.last = entry;
                }
            /* Uncomment to debug which roms are loaded from cache. */
            /* printf("Added from cache: %d %s\n", counter, entry->inientry->goodname); */
            }
        }

    gzclose(gzfile);

    return 1;
}
#endif

/* Convert two letters representing hexidecimal to the appropriate value: 00->0 - FF->255. */
unsigned char hexconvert(const char* bigraph)
{
    unsigned char returnvalue = 0;
    char character;
    int digits;

    for(digits = 2; digits > 0; --digits)
        {
        returnvalue = returnvalue << 4;
        character = *bigraph++ | 0x20;
        if(character>='0'&&character<='9')
            returnvalue += character - '0';
        else if(character>='a'&&character<='f')
            returnvalue += character - 'a' + 10;
        }

    return returnvalue;
}

/* Helper function, identify the space of a line before an = sign. */
static int split_property(char* string)
{
    int counter = 0;
    while (string[counter] != '=' && string[counter] != '\0')
        ++counter;
    if(string[counter]=='\0')
        return -1;
    string[counter] = '\0';
    return counter;
}

void romdatabase_open(void)
{
    gzFile gzfile;
    char buffer[256];
    romdatabase_search* search = NULL;
    romdatabase_entry* entry = NULL;

    int stringlength, totallength, namelength, index, counter, value;
    char hashtemp[3];
    hashtemp[2] = '\0';

    if(g_romdatabase.comment!=NULL)
        return;

    /* Setup empty_entry. */
    empty_entry.goodname = "";
    for(counter=0; counter<16; ++counter)
       empty_entry.md5[counter]=0;
    empty_entry.refmd5 = NULL;
    empty_entry.crc1 = 0;
    empty_entry.crc2 = 0;
    empty_entry.status = 0;
    empty_entry.savetype = DEFAULT;
    empty_entry.players = DEFAULT;
    empty_entry.rumble = DEFAULT;

    /* Open romdatabase. */
    char* pathname = (char*)malloc(PATH_MAX*sizeof(char));
    snprintf(pathname, PATH_MAX, "%s%s", get_installpath(), "mupen64plus.ini");

    /* printf("Database file: %s \n", pathname); */
    gzfile = gzopen(pathname, "rb");
    if(gzfile==NULL)
        {
        printf("Unable to open rom database.\n");
        free(pathname);
        return;
        }
    free(pathname);

    /* Move through opening comments, set romdatabase.comment to non-NULL
    to signal we have a database. */
    totallength = 0;
    do
        {
        gzgets(gzfile, buffer, 255);
        if(buffer[0]!='[')
            {
            stringlength=strlen(buffer);
            totallength+=stringlength;
            if(g_romdatabase.comment==NULL) 
                {
                g_romdatabase.comment = (char*)malloc(stringlength+2);
                snprintf(g_romdatabase.comment, stringlength, "%s", buffer);
                }
            else
                {
                g_romdatabase.comment = (char*)realloc(g_romdatabase.comment, totallength+2);
                snprintf(g_romdatabase.comment, totallength+1, "%s%s", g_romdatabase.comment, buffer);
                }
            }
        }
    while (buffer[0] != '[' && !gzeof(gzfile));

    /* Clear premade indices. */
    for(counter = 0; counter < 255; ++counter)
        g_romdatabase.crc_lists[counter] = NULL;
    for(counter = 0; counter < 255; ++counter)
        g_romdatabase.md5_lists[counter] = NULL;
    g_romdatabase.list = NULL;

    do
        {
        if(buffer[0]=='[')
            {
            if(g_romdatabase.list==NULL)
                {
                g_romdatabase.list = (romdatabase_search*)malloc(sizeof(romdatabase_search));
                g_romdatabase.list->next_entry = NULL;
                g_romdatabase.list->next_crc = NULL;
                g_romdatabase.list->next_md5 = NULL;
                search = g_romdatabase.list;
                }
            else
                {
                search->next_entry = (romdatabase_search*)malloc(sizeof(romdatabase_search));
                search = search->next_entry;
                search->next_entry = NULL;
                search->next_crc = NULL;
                search->next_md5 = NULL;
                }
            for (counter=0; counter < 16; ++counter)
              {
              hashtemp[0] = buffer[counter*2+1];
              hashtemp[1] = buffer[counter*2+2];
              search->entry.md5[counter] = hexconvert(hashtemp);
              }
            /* Index MD5s by first 8 bits. */
            index = search->entry.md5[0];
            if(g_romdatabase.md5_lists[index]==NULL)
                g_romdatabase.md5_lists[index] = search;
            else
                {
                romdatabase_search* aux = g_romdatabase.md5_lists[index];
                search->next_md5 = aux;
                g_romdatabase.md5_lists[index] = search;
                }
            search->entry.goodname = NULL;
            search->entry.refmd5 = NULL;
            search->entry.crc1 = 0;
            search->entry.crc2 = 0;
            search->entry.status = 0; /* Set default to 0 stars. */
            search->entry.savetype = DEFAULT;
            search->entry.rumble = DEFAULT; 
            search->entry.players = DEFAULT; 
            }
        else
            {
            stringlength = split_property(buffer);
            if(stringlength!=-1)
                {
                if(!strcmp(buffer, "GoodName"))
                    {
                    /* Get length of GoodName since we dynamically allocate. */
                    namelength = strlen(buffer+stringlength+1);
                    search->entry.goodname = (char*)malloc(namelength*sizeof(char));
                    /* Make sure we're null terminated. */
                    if(buffer[stringlength+namelength]=='\n'||buffer[stringlength+namelength]=='\r')
                        buffer[stringlength+namelength] = '\0';
                    snprintf(search->entry.goodname, namelength, "%s", buffer+stringlength+1);
                    /* printf("Name: %s, Length: %d\n", search->entry.goodname, namelength-1); */
                    }
                else if(!strcmp(buffer, "CRC"))
                    {
                    buffer[stringlength+19] = '\0';
                    sscanf(buffer+stringlength+10, "%X", &search->entry.crc2);
                    buffer[stringlength+9] = '\0';
                    sscanf(buffer+stringlength+1, "%X", &search->entry.crc1);
                    buffer[stringlength+3] = '\0';
                    index = hexconvert(buffer+stringlength+1);
                    /* Index CRCs by first 8 bits. */
                    if(g_romdatabase.crc_lists[index]==NULL)
                        g_romdatabase.crc_lists[index] = search;
                    else
                        {
                        romdatabase_search* aux = g_romdatabase.crc_lists[index];
                        search->next_crc = aux;
                        g_romdatabase.crc_lists[index] = search;
                        }
                    }
                else if(!strcmp(buffer, "RefMD5"))
                    {
                    /* If we have a refernce MD5, dynamically allocate. */
                    search->entry.refmd5 = (md5_byte_t*)malloc(16*sizeof(md5_byte_t));
                    for (counter=0; counter < 16; ++counter)
                        {
                        hashtemp[0] = buffer[stringlength+1+counter*2];
                        hashtemp[1] = buffer[stringlength+2+counter*2];
                        search->entry.refmd5[counter] = hexconvert(hashtemp);
                        }
                    /* Lookup reference MD5 and replace non-default entries. */
                    if((entry = ini_search_by_md5(search->entry.refmd5))!=&empty_entry)
                        {
                        /* printf("RefMD5: %s\n", aux->goodname); */
                        if(entry->savetype!=DEFAULT)
                            search->entry.savetype = entry->savetype;
                        if(entry->status!=0)
                            search->entry.status = entry->status;
                        if(entry->players!=DEFAULT)
                            search->entry.players = entry->players;
                        if(entry->rumble!=DEFAULT)
                            search->entry.rumble = entry->rumble;
                        }
                    }
                else if(!strcmp(buffer, "SaveType"))
                    {
                    if(!strncmp(buffer+stringlength+1, "Eeprom 4KB", 10))
                        search->entry.savetype = EEPROM_4KB;
                    else if(!strncmp(buffer+stringlength+1, "Eeprom 16KB", 10))
                        search->entry.savetype = EEPROM_16KB;
                    else if(!strncmp(buffer+stringlength+1, "SRAM", 4))
                        search->entry.savetype = SRAM;
                    else if(!strncmp(buffer+stringlength+1, "Flash RAM", 9))
                        search->entry.savetype = FLASH_RAM;
                    else if(!strncmp(buffer+stringlength+1, "Controller Pack", 15))
                        search->entry.savetype = CONTROLLER_PACK;
                    else if(!strncmp(buffer+stringlength+1, "None", 4))
                        search->entry.savetype = NONE;
                    }
                else if(!strcmp(buffer, "Status"))
                    {
                    value = (unsigned char)atoi(buffer+stringlength+1);
                    if(value>-1&&value<6)
                        search->entry.status = value;
                    }
                else if(!strcmp(buffer, "Players"))
                    {
                    value = (unsigned char)atoi(buffer+stringlength+1);
                    if(value>-1&&value<8)
                        search->entry.players = value;
                    }
                else if(!strcmp(buffer, "Rumble"))
                    {
                    if(!strncmp(buffer+stringlength+1, "Yes", 3))
                        search->entry.rumble = 1;
                    if(!strncmp(buffer+stringlength+1, "No", 2))
                        search->entry.rumble = 0;
                    }
                }
            }

        gzgets(gzfile, buffer, 255);
        }
   while (!gzeof(gzfile));

   gzclose(gzfile);
}

void romdatabase_close(void)
{
    if (g_romdatabase.comment == NULL)
        return;

    free(g_romdatabase.comment);

    while (g_romdatabase.list != NULL)
        {
        romdatabase_search* search = g_romdatabase.list->next_entry;
        if(g_romdatabase.list->entry.goodname)
            free(g_romdatabase.list->entry.goodname);
        if(g_romdatabase.list->entry.refmd5)
            free(g_romdatabase.list->entry.refmd5);
        free(g_romdatabase.list);
        g_romdatabase.list = search;
        }
}

romdatabase_entry* ini_search_by_md5(md5_byte_t* md5)
{
    if(g_romdatabase.comment==NULL)
        return &empty_entry;
    romdatabase_search* search;
    search = g_romdatabase.md5_lists[md5[0]];

    while (search != NULL && memcmp(search->entry.md5, md5, 16) != 0)
        search = search->next_md5;

    if(search==NULL)
        return &empty_entry;
    else
        return &(search->entry);
}

romdatabase_entry* ini_search_by_crc(unsigned int crc1, unsigned int crc2)
{
    if(g_romdatabase.comment==NULL) 
        return &empty_entry;

    romdatabase_search* search;
    search = g_romdatabase.crc_lists[((crc1 >> 24) & 0xff)];

    while (search != NULL && search->entry.crc1 != crc1 && search->entry.crc2 != crc2)
        search = search->next_crc;

    if(search == NULL) 
        return &empty_entry;
    else
        return &(search->entry);
}