usbloadergx/source/usbloader/wbfs/wbfs_fat.cpp

// WBFS FAT by oggzee

#include <stdio.h>
#include <unistd.h>
#include <malloc.h>
#include <ogcsys.h>
#include <dirent.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <sys/statvfs.h>
#include <ctype.h>

#include "settings/CSettings.h"
#include "usbloader/disc.h"
#include "fatmounter.h"
#include "wbfs_fat.h"
#include "prompts/ProgressWindow.h"
#include "wbfs_rw.h"

#include "gecko.h"

#define MAX_FAT_PATH 1024
#define TITLE_LEN 64

using namespace std;

char Wbfs_Fat::wbfs_fs_drive[16];
char Wbfs_Fat::wbfs_fat_dir[16] = "/wbfs";
char Wbfs_Fat::invalid_path[] = "/\\:|<>?*\"'";
struct discHdr *Wbfs_Fat::fat_hdr_list = NULL;
u32 Wbfs_Fat::fat_hdr_count = 0;

extern "C"
{
    int _FAT_get_fragments(const char *path, _frag_append_t append_fragment, void *callback_data);
    extern FragList *frag_list;
}

u32 Wbfs_Fat::fat_sector_size = 512;

Wbfs_Fat::Wbfs_Fat(u32 device, u32 lba, u32 size) :
    Wbfs(device, lba, size)
{
}

s32 Wbfs_Fat::Open()
{
    if (device == WBFS_DEVICE_USB && lba == fat_usb_sec)
    {
        strcpy(wbfs_fs_drive, "USB:");
    }
    else if (device == WBFS_DEVICE_SDHC && lba == fat_sd_sec)
    {
        strcpy(wbfs_fs_drive, "SD:");
    }
    else
    {
        if (WBFSDevice_Init(lba)) return -1;
        strcpy(wbfs_fs_drive, "WBFS:");
    }

    return 0;
}

wbfs_disc_t* Wbfs_Fat::OpenDisc(u8 *discid)
{
    char fname[MAX_FAT_PATH];

    // wbfs 'partition' file
    if (!FindFilename(discid, fname, sizeof(fname))) return NULL;

    if (strcasecmp(strrchr(fname, '.'), ".iso") == 0)
    {
        // .iso file
        // create a fake wbfs_disc
        int fd;
        fd = open(fname, O_RDONLY);
        if (fd == -1) return NULL;
        wbfs_disc_t *iso_file = (wbfs_disc_t *) calloc(sizeof(wbfs_disc_t), 1);
        if (iso_file == NULL) return NULL;
        // mark with a special wbfs_part
        wbfs_iso_file.wbfs_sec_sz = 512;
        iso_file->p = &wbfs_iso_file;
        iso_file->header = (wbfs_disc_info_t*) fd;
        return iso_file;
    }

    wbfs_t *part = OpenPart(fname);
    if (!part) return NULL;
    return wbfs_open_disc(part, discid);
}

void Wbfs_Fat::CloseDisc(wbfs_disc_t* disc)
{
    if (!disc) return;
    wbfs_t *part = disc->p;

    // is this really a .iso file?
    if (part == &wbfs_iso_file)
    {
        close((int) disc->header);
        free(disc);
        return;
    }

    wbfs_close_disc(disc);
    ClosePart(part);
    return;
}

s32 Wbfs_Fat::GetCount(u32 *count)
{
    *count = 0;
    GetHeadersCount();
    if (fat_hdr_count && fat_hdr_list)
    {
        // for compacter mem - move up as it will be freed later
        int size = fat_hdr_count * sizeof(struct discHdr);
        struct discHdr *buf = (struct discHdr *) malloc(size);
        if (buf)
        {
            memcpy(buf, fat_hdr_list, size);
            SAFE_FREE( fat_hdr_list );
            fat_hdr_list = buf;
        }
    }
    *count = fat_hdr_count;
    return 0;
}

s32 Wbfs_Fat::GetHeaders(struct discHdr *outbuf, u32 cnt, u32 len)
{
    u32 i;
    if (len > sizeof(struct discHdr))
    {
        len = sizeof(struct discHdr);
    }
#ifdef DEBUG_WBFS
    gprintf( "\n\tGetHeaders" );
#endif
    for (i = 0; i < cnt && i < fat_hdr_count; i++)
    {
        memcpy(&outbuf[i], &fat_hdr_list[i], len);
    }
    SAFE_FREE( fat_hdr_list );
    fat_hdr_count = 0;
#ifdef DEBUG_WBFS
    gprintf( "...ok" );
#endif
    return 0;
}

s32 Wbfs_Fat::AddGame(void)
{
    static struct discHdr header ATTRIBUTE_ALIGN( 32 );
    char path[MAX_FAT_PATH];
    wbfs_t *part = NULL;
    s32 ret;

    // read ID from DVD
    Disc_ReadHeader(&header);
    // path
    GetDir(&header, path);
    // create wbfs 'partition' file
    part = CreatePart(header.id, path);
    if (!part) return -1;
    /* Add game to device */
    partition_selector_t part_sel = ALL_PARTITIONS;
    int copy_1_1 = Settings.fullcopy;
    switch (Settings.partitions_to_install)
    {
        case install_game_only:
            part_sel = ONLY_GAME_PARTITION;
            break;
        case install_all:
            part_sel = ALL_PARTITIONS;
            break;
        case install_all_but_update:
            part_sel = REMOVE_UPDATE_PARTITION;
            break;
    }
    if (copy_1_1)
    {
        part_sel = ALL_PARTITIONS;
    }
    wbfs_t *old_hdd = hdd;
    hdd = part; // used by spinner
    ret = wbfs_add_disc(part, __ReadDVD, NULL, ProgressCallback, part_sel, copy_1_1);
    hdd = old_hdd;
    wbfs_trim(part);
    ClosePart(part);

    if (ret < 0) return ret;
    mk_title_txt(&header, path);

    return 0;
}

s32 Wbfs_Fat::RemoveGame(u8 *discid)
{
    char fname[MAX_FAT_PATH];
    int loc;
    // wbfs 'partition' file
    loc = FindFilename(discid, fname, sizeof(fname));
    if (!loc) return -1;
    split_create(&split, fname, 0, 0, true);
    split_close(&split);
    if (loc == 1) return 0;

    // game is in subdir
    // remove optional .txt file
    DIR_ITER *dir_iter;
    struct stat st;
    char path[MAX_FAT_PATH];
    char name[MAX_FAT_PATH];
    strncpy(path, fname, sizeof(path));
    char *p = strrchr(path, '/');
    if (p) *p = 0;
    dir_iter = diropen(path);
    if (!dir_iter) return 0;
    while (dirnext(dir_iter, name, &st) == 0)
    {
        if (name[0] == '.') continue;
        if (name[6] != '_') continue;
        if (strncmp(name, (char*) discid, 6) != 0) continue;
        p = strrchr(name, '.');
        if (!p) continue;
        if (strcasecmp(p, ".txt") != 0) continue;
        snprintf(fname, sizeof(fname), "%s/%s", path, name);
        remove(fname);
        break;
    }
    dirclose(dir_iter);
    // remove game subdir
    unlink(path);

    return 0;
}

s32 Wbfs_Fat::DiskSpace(f32 *used, f32 *free)
{
    f32 size;
    int ret;
    struct statvfs wbfs_fat_vfs;

    *used = 0;
    *free = 0;
    ret = statvfs(wbfs_fs_drive, &wbfs_fat_vfs);
    if (ret) return -1;

    /* FS size in GB */
    size = (f32) wbfs_fat_vfs.f_frsize * (f32) wbfs_fat_vfs.f_blocks / GB_SIZE;
    *free = (f32) wbfs_fat_vfs.f_frsize * (f32) wbfs_fat_vfs.f_bfree / GB_SIZE;
    *used = size - *free;

    return 0;
}

s32 Wbfs_Fat::RenameGame(u8 *discid, const void *newname)
{
    wbfs_t *part = OpenPart((char *) discid);
    if (!part) return -1;

    s32 ret = wbfs_ren_disc(part, discid, (u8*) newname);

    ClosePart(part);

    return ret;
}

s32 Wbfs_Fat::ReIDGame(u8 *discid, const void *newID)
{
    wbfs_t *part = OpenPart((char *) discid);
    if (!part) return -1;

    s32 ret = wbfs_rID_disc(part, discid, (u8*) newID);

    ClosePart(part);

    if (ret == 0)
    {
        char fname[100];
        char fnamenew[100];
        s32 cnt = 0x31;

        Filename(discid, fname, sizeof(fname), NULL);
        Filename((u8*) newID, fnamenew, sizeof(fnamenew), NULL);

        int stringlength = strlen(fname);

        while (rename(fname, fnamenew) == 0)
        {
            fname[stringlength] = cnt;
            fname[stringlength + 1] = 0;
            fnamenew[stringlength] = cnt;
            fnamenew[stringlength + 1] = 0;
            cnt++;
        }
    }

    return ret;
}

f32 Wbfs_Fat::EstimateGameSize()
{
    wbfs_t *part = NULL;
    u64 size = (u64) 143432 * 2 * 0x8000ULL;
    u32 n_sector = size / fat_sector_size;
    u32 wii_sec_sz;

    // init a temporary dummy part
    // as a placeholder for wbfs_size_disc
    part = wbfs_open_partition(nop_rw_sector, nop_rw_sector, NULL, fat_sector_size, n_sector, 0, 1);
    if (!part) return -1;
    wii_sec_sz = part->wii_sec_sz;

    partition_selector_t part_sel;
    if (Settings.fullcopy)
    {
        part_sel = ALL_PARTITIONS;
    }
    else
    {
        part_sel = Settings.partitions_to_install == install_game_only ? ONLY_GAME_PARTITION : ALL_PARTITIONS;
    }
    return wbfs_estimate_disc(part, __ReadDVD, NULL, part_sel);
}

// TITLE [GAMEID]
bool Wbfs_Fat::CheckLayoutB(char *fname, int len, u8* id, char *fname_title)
{
    if (len <= 8) return false;
    if (fname[len - 8] != '[' || fname[len - 1] != ']') return false;
    if (!is_gameid(&fname[len - 7])) return false;
    strncpy(fname_title, fname, TITLE_LEN);
    // cut at '['
    fname_title[len - 8] = 0;
    int n = strlen(fname_title);
    if (n == 0) return false;
    // cut trailing _ or ' '
    if (fname_title[n - 1] == ' ' || fname_title[n - 1] == '_')
    {
        fname_title[n - 1] = 0;
    }
    if (strlen(fname_title) == 0) return false;
    if (id)
    {
        memcpy(id, &fname[len - 7], 6);
        id[6] = 0;
    }
    return true;
}

s32 Wbfs_Fat::GetHeadersCount()
{
    char path[MAX_FAT_PATH];
    char fname[MAX_FAT_PATH];
    char fpath[MAX_FAT_PATH];
    struct discHdr tmpHdr;
    struct stat st;
    wbfs_t *part = NULL;
    u8 id[8];
    int ret;
    char *p;
    u32 size;
    int is_dir;
    int len;
    char dir_title[65];
    char fname_title[TITLE_LEN];
    char *title;
    DIR_ITER *dir_iter;

    //dbg_time1();

    SAFE_FREE( fat_hdr_list );
    fat_hdr_count = 0;

    strcpy(path, wbfs_fs_drive);
    strcat(path, wbfs_fat_dir);

    dir_iter = diropen(path);
    if (!dir_iter) return 0;

    dir_iter = diropen(path);
    if (!dir_iter) return 0;

    while (dirnext(dir_iter, fname, &st) == 0)
    {
        //printf("found: %s\n", fname); Wpad_WaitButtonsCommon();
        if ((char) fname[0] == '.') continue;
        len = strlen(fname);
        if (len < 8) continue; // "GAMEID_x"

        memcpy(id, fname, 6);
        id[6] = 0;
        *fname_title = 0;

        is_dir = S_ISDIR( st.st_mode );
        //printf("mode: %d %d %x\n", is_dir, st.st_mode, st.st_mode);
        if (is_dir)
        {
            int lay_a = 0;
            int lay_b = 0;
            if (fname[6] == '_' && is_gameid((char*) id))
            {
                // usb:/wbfs/GAMEID_TITLE/GAMEID.wbfs
                lay_a = 1;
            }
            if (CheckLayoutB(fname, len, NULL, fname_title))
            {
                // usb:/wbfs/TITLE[GAMEID]/GAMEID.wbfs
                lay_b = 1;
            }
            if (!lay_a && !lay_b) continue;
            if (lay_a)
            {
                strncpy(dir_title, &fname[7], sizeof(dir_title));
            }
            else
            {
                try_lay_b: if (!CheckLayoutB(fname, len, id, fname_title)) continue;
            }
            snprintf(fpath, sizeof(fpath), "%s/%s/%s.wbfs", path, fname, id);
            //printf("path2: %s\n", fpath);
            // if more than 50 games, skip second stat to improve speed
            // but if ambiguous layout check anyway
            if (fat_hdr_count < 50 || (lay_a && lay_b))
            {
                if (stat(fpath, &st) == -1)
                {
                    //printf("missing: %s\n", fpath);
                    // try .iso
                    strcpy(strrchr(fpath, '.'), ".iso"); // replace .wbfs with .iso
                    if (stat(fpath, &st) == -1)
                    {
                        //printf("missing: %s\n", fpath);
                        // try .ciso
                        strcpy(strrchr(fpath, '.'), ".ciso"); // replace .iso with .ciso
                        if (stat(fpath, &st) == -1)
                        {
                            if (lay_a && lay_b == 1)
                            {
                                // mark lay_b so that the stat check is still done,
                                // but lay_b is not re-tried again
                                lay_b = 2;
                                // retry with layout b
                                goto try_lay_b;
                            }
                            continue;
                        }
                    }
                }
            }
            else
            {
                st.st_size = 1024 * 1024;
            }
        }
        else
        {
            // usb:/wbfs/GAMEID.wbfs
            // or usb:/wbfs/GAMEID.iso
            // or usb:/wbfs/GAMEID.ciso
            p = strrchr(fname, '.');
            if (!p) continue;
            if ((strcasecmp(p, ".wbfs") != 0) && (strcasecmp(p, ".iso") != 0) && (strcasecmp(p, ".ciso") != 0)) continue;
            int n = p - fname; // length withouth .wbfs
            if (n != 6)
            {
                // TITLE [GAMEID].wbfs
                if (!CheckLayoutB(fname, n, id, fname_title)) continue;
            }
            snprintf(fpath, sizeof(fpath), "%s/%s", path, fname);
        }

        //printf("found: %s %d MB\n", fpath, (int)(st.st_size/1024/1024));
        // size must be at least 1MB to be considered a valid wbfs file
        if (st.st_size < 1024 * 1024) continue;
        // if we have titles.txt entry use that
        title = cfg_get_title(id);
        // if no titles.txt get title from dir or file name
        if (!title && *fname_title)
        {
            title = fname_title;
        }
        if (title)
        {
            memset(&tmpHdr, 0, sizeof(tmpHdr));
            memcpy(tmpHdr.id, id, 6);
            strncpy(tmpHdr.title, title, sizeof(tmpHdr.title) - 1);
            tmpHdr.magic = 0x5D1C9EA3;
            goto add_hdr;
        }

        // else read it from file directly
        if (strcasecmp(strrchr(fpath, '.'), ".wbfs") == 0)
        {
            // wbfs file directly
            FILE *fp = fopen(fpath, "rb");
            if (fp != NULL)
            {
                fseek(fp, 512, SEEK_SET);
                fread(&tmpHdr, sizeof(struct discHdr), 1, fp);
                fclose(fp);
                tmpHdr.is_ciso = 0;
                if ((tmpHdr.magic == 0x5D1C9EA3) && (memcmp(tmpHdr.id, id, 6) == 0))
                {
                    goto add_hdr;
                }
            }
            // no title found, read it from wbfs file
            // but this is a little bit slower
            // open 'partition' file
            part = OpenPart(fpath);
            if (!part)
            {
                continue;
            }
            // Get header
            ret = wbfs_get_disc_info(part, 0, (u8*) &tmpHdr, sizeof(struct discHdr), &size);
            ClosePart(part);
            if (ret == 0)
            {
                goto add_hdr;
            }
        }
        else if (strcasecmp(strrchr(fpath, '.'), ".iso") == 0)
        {
            // iso file
            FILE *fp = fopen(fpath, "rb");
            if (fp != NULL)
            {
                fseek(fp, 0, SEEK_SET);
                fread(&tmpHdr, sizeof(struct discHdr), 1, fp);
                fclose(fp);
                tmpHdr.is_ciso = 0;
                if ((tmpHdr.magic == 0x5D1C9EA3) && (memcmp(tmpHdr.id, id, 6) == 0))
                {
                    goto add_hdr;
                }
            }
        }
        else if (strcasecmp(strrchr(fpath, '.'), ".ciso") == 0)
        {
            // ciso file
            FILE *fp = fopen(fpath, "rb");
            if (fp != NULL)
            {
                fseek(fp, 0x8000, SEEK_SET);
                fread(&tmpHdr, sizeof(struct discHdr), 1, fp);
                fclose(fp);
                tmpHdr.is_ciso = 1;
                if ((tmpHdr.magic == 0x5D1C9EA3) && (memcmp(tmpHdr.id, id, 6) == 0))
                {
                    goto add_hdr;
                }
            }
        }
        // fail:
        continue;

        // succes: add tmpHdr to list:
        add_hdr: memset(&st, 0, sizeof(st));
        //printf("added: %.6s %.20s\n", tmpHdr.id, tmpHdr.title); Wpad_WaitButtons();
        fat_hdr_count++;
        fat_hdr_list = (struct discHdr *) realloc(fat_hdr_list, fat_hdr_count * sizeof(struct discHdr));
        memcpy(&fat_hdr_list[fat_hdr_count - 1], &tmpHdr, sizeof(struct discHdr));
    }
    dirclose(dir_iter);
    //dbg_time2("\nFAT_GetCount"); Wpad_WaitButtonsCommon();

    return 0;
}

int Wbfs_Fat::FindFilename(u8 *id, char *fname, int len)
{
    struct stat st;
    // look for direct .wbfs file
    Filename(id, fname, len, NULL);
    if (stat(fname, &st) == 0) return 1;
    // look for direct .iso file
    strcpy(strrchr(fname, '.'), ".iso"); // replace .wbfs with .iso
    if (stat(fname, &st) == 0) return 1;
    // look for direct .ciso file
    strcpy(strrchr(fname, '.'), ".ciso"); // replace .iso with .ciso
    if (stat(fname, &st) == 0) return 1;
    // direct file not found, check subdirs
    *fname = 0;
    DIR_ITER *dir_iter;
    char path[MAX_FAT_PATH];
    char name[MAX_FAT_PATH];
    strcpy(path, wbfs_fs_drive);
    strcat(path, wbfs_fat_dir);
    dir_iter = diropen(path);
    //printf("dir: %s %p\n", path, dir); Wpad_WaitButtons();
    if (!dir_iter)
    {
        return 0;
    }
    while (dirnext(dir_iter, name, &st) == 0)
    {
        //dbg_printf("name:%s\n", name);
        if (name[0] == '.') continue;
        int n = strlen(name);
        if (n < 8) continue;
        if (S_ISDIR( st.st_mode ))
        {
            if (name[6] == '_')
            {
                // GAMEID_TITLE
                if (strncmp(name, (char*) id, 6) != 0) goto try_alter;
            }
            else
            {
                try_alter:
                // TITLE [GAMEID]
                if (name[n - 8] != '[' || name[n - 1] != ']') continue;
                if (strncmp(&name[n - 7], (char*) id, 6) != 0) continue;
            }
            // look for .wbfs file
            snprintf(fname, len, "%s/%s/%.6s.wbfs", path, name, id);
            if (stat(fname, &st) == 0) break;
            // look for .iso file
            snprintf(fname, len, "%s/%s/%.6s.iso", path, name, id);
            if (stat(fname, &st) == 0) break;
            // look for .ciso file
            snprintf(fname, len, "%s/%s/%.6s.ciso", path, name, id);
        }
        else
        {
            // TITLE [GAMEID].wbfs
            char fn_title[TITLE_LEN];
            u8 fn_id[8];
            char *p = strrchr(name, '.');
            if (!p) continue;
            if ((strcasecmp(p, ".wbfs") != 0) && (strcasecmp(p, ".iso") != 0) && (strcasecmp(p, ".ciso") != 0)) continue;
            int n = p - name; // length withouth .wbfs
            if (!CheckLayoutB(name, n, fn_id, fn_title)) continue;
            if (strncmp((char*) fn_id, (char*) id, 6) != 0) continue;
            snprintf(fname, len, "%s/%s", path, name);
        }
        if (stat(fname, &st) == 0) break;
        *fname = 0;
    }
    dirclose(dir_iter);
    if (*fname)
    {
        // found
        //printf("found:%s\n", fname);
        return 2;
    }
    // not found
    return 0;
}

wbfs_t* Wbfs_Fat::OpenPart(char *fname)
{
    wbfs_t *part = NULL;
    int ret;

    // wbfs 'partition' file
    ret = split_open(&split, fname);
    if (ret) return NULL;
    part = wbfs_open_partition(split_read_sector, nop_rw_sector, //readonly //split_write_sector,
            &split, fat_sector_size, split.total_sec, 0, 0);
    if (!part)
    {
        split_close(&split);
    }
    return part;
}

void Wbfs_Fat::ClosePart(wbfs_t* part)
{
    if (!part) return;
    split_info_t *s = (split_info_t*) part->callback_data;
    wbfs_close(part);
    if (s) split_close(s);
}

void Wbfs_Fat::Filename(u8 *id, char *fname, int len, char *path)
{
    if (path == NULL)
    {
        snprintf(fname, len, "%s%s/%.6s.wbfs", wbfs_fs_drive, wbfs_fat_dir, id);
    }
    else
    {
        snprintf(fname, len, "%s/%.6s.wbfs", path, id);
    }
}

void Wbfs_Fat::GetDir(struct discHdr *header, char *path)
{
    strcpy(path, wbfs_fs_drive);
    strcat(path, wbfs_fat_dir);
    if (Settings.FatInstallToDir)
    {
        strcat(path, "/");
        int layout = 0;
        if (Settings.FatInstallToDir == 2) layout = 1;
        mk_gameid_title(header, path + strlen(path), 0, layout);
    }
}

wbfs_t* Wbfs_Fat::CreatePart(u8 *id, char *path)
{
    char fname[MAX_FAT_PATH];
    wbfs_t *part = NULL;
    u64 size = (u64) 143432 * 2 * 0x8000ULL;
    u32 n_sector = size / 512;
    int ret;

    //printf("CREATE PART %s %lld %d\n", id, size, n_sector);
    snprintf(fname, sizeof(fname), "%s%s", wbfs_fs_drive, wbfs_fat_dir);
    mkdir(fname, 0777); // base usb:/wbfs
    mkdir(path, 0777); // game subdir
    Filename(id, fname, sizeof(fname), path);
    printf("Writing to %s\n", fname);
    ret = split_create(&split, fname, OPT_split_size, size, true);
    if (ret) return NULL;

    // force create first file
    u32 scnt = 0;
    int fd = split_get_file(&split, 0, &scnt, 0);
    if (fd < 0)
    {
        printf("ERROR creating file\n");
        sleep(2);
        split_close(&split);
        return NULL;
    }

    part = wbfs_open_partition(split_read_sector, split_write_sector, &split, fat_sector_size, n_sector, 0, 1);
    if (!part)
    {
        split_close(&split);
    }
    return part;
}

void Wbfs_Fat::mk_title_txt(struct discHdr *header, char *path)
{
    char fname[MAX_FAT_PATH];
    FILE *f;

    strcpy(fname, path);
    strcat(fname, "/");
    mk_gameid_title(header, fname + strlen(fname), 1, 0);
    strcat(fname, ".txt");

    f = fopen(fname, "wb");
    if (!f) return;
    fprintf(f, "%.6s = %.64s\n", header->id, get_title(header));
    fclose(f);
    printf("Info file: %s\n", fname);
}

void Wbfs_Fat::mk_gameid_title(struct discHdr *header, char *name, int re_space, int layout)
{
    int i, len;
    char title[65];
    char id[8];

    memcpy(name, header->id, 6);
    name[6] = 0;
    strncpy(title, get_title(header), sizeof(title));
    title_filename(title);

    if (layout == 0)
    {
        sprintf(name, "%s_%s", id, title);
    }
    else
    {
        sprintf(name, "%s [%s]", title, id);
    }

    // replace space with '_'
    if (re_space)
    {
        len = strlen(name);
        for (i = 0; i < len; i++)
        {
            if (name[i] == ' ') name[i] = '_';
        }
    }
}

void Wbfs_Fat::title_filename(char *title)
{
    int i, len;
    // trim leading space
    len = strlen(title);
    while (*title == ' ')
    {
        memmove(title, title + 1, len);
        len--;
    }
    // trim trailing space - not allowed on windows directories
    while (len && title[len - 1] == ' ')
    {
        title[len - 1] = 0;
        len--;
    }
    // replace silly chars with '_'
    for (i = 0; i < len; i++)
    {
        if (strchr(invalid_path, title[i]) || iscntrl((int) title[i]))
        {
            title[i] = '_';
        }
    }
}

bool Wbfs_Fat::is_gameid(char *id)
{
    int i;
    for (i = 0; i < 6; i++)
    {
        if (!isalnum((u32) id[i])) return false;
    }
    return true;
}

int Wbfs_Fat::GetFragList(u8 *id)
{
    char fname[1024];
    char fname1[1024];
    struct stat st;
    FragList *fs = NULL;
    FragList *fa = NULL;
    FragList *fw = NULL;
    int ret;
    int i;
    int is_wbfs = 0;
    int ret_val = -1;

    ret = FindFilename(id, fname, sizeof(fname));
    if (!ret) return -1;

    if (strcasecmp(strrchr(fname, '.'), ".wbfs") == 0)
    {
        is_wbfs = 1;
    }

    fs = (FragList *) malloc(sizeof(FragList));
    fa = (FragList *) malloc(sizeof(FragList));
    fw = (FragList *) malloc(sizeof(FragList));

    frag_init(fa, MAX_FRAG);

    for (i = 0; i < 10; i++)
    {
        frag_init(fs, MAX_FRAG);
        if (i > 0)
        {
            fname[strlen(fname) - 1] = '0' + i;
            if (stat(fname, &st) == -1) break;
        }
        strcpy(fname1, fname);
        if ((ret = GetFragList((char *) &fname, &_frag_append, fs)))
        {
            ret_val = ret;
            goto out;
        }
        frag_concat(fa, fs);
    }
    frag_list = (FragList *) malloc(sizeof(FragList));
    frag_init(frag_list, MAX_FRAG);
    if (is_wbfs)
    {
        // if wbfs file format, remap.
        //printf("=====\n");
        wbfs_disc_t *d = OpenDisc(id);
        if (!d) goto out;
        frag_init(fw, MAX_FRAG);
        ret = wbfs_get_fragments(d, &_frag_append, fw);
        if (ret) goto out;
        CloseDisc(d);
        // DEBUG:
        //frag_list->num = MAX_FRAG-10; // stress test
        ret = frag_remap(frag_list, fw, fa);
        if (ret) goto out;
    }
    else
    {
        // .iso does not need remap just copy
        //printf("fa:\n");
        memcpy(frag_list, fa, sizeof(FragList));
    }

    ret_val = 0;

    out: if (ret_val)
    {
        // error
        SAFE_FREE( frag_list );
    }
    SAFE_FREE( fs );
    SAFE_FREE( fa );
    SAFE_FREE( fw );
    return ret_val;
}

int Wbfs_Fat::GetFragList(char *filename, _frag_append_t append_fragment, FragList *fs)
{
    return _FAT_get_fragments(filename, append_fragment, fs);
}

bool Wbfs_Fat::ShowFreeSpace(void)
{
    return false;
}