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 <fat.h>

#include "Controls/DeviceHandler.hpp"
#include "FileOperations/fileops.h"
#include "settings/CSettings.h"
#include "settings/GameTitles.h"
#include "usbloader/disc.h"
#include "usbloader/usbstorage2.h"
#include "language/gettext.h"
#include "libs/libfat/fatfile_frag.h"
#include "utils/ShowError.h"
#include "wbfs_fat.h"
#include "prompts/ProgressWindow.h"
#include "usbloader/wbfs.h"
#include "usbloader/GameList.h"
#include "wbfs_rw.h"

#include "gecko.h"

#define MAX_FAT_PATH 1024
#define TITLE_LEN 64

using namespace std;

static const char wbfs_fat_dir[] = "/wbfs";
static const char invalid_path[] = "/\\:|<>?*\"'";
extern u32 hdd_sector_size;

Wbfs_Fat::Wbfs_Fat(u32 lba, u32 size, u32 part) :
    Wbfs(lba, size, part), fat_hdr_list(NULL), fat_hdr_count(0)
{
    memset(wbfs_fs_drive, 0, sizeof(wbfs_fs_drive));
}

s32 Wbfs_Fat::Open()
{
    Close();

    PartitionHandle * usbHandle = DeviceHandler::Instance()->GetUSBHandle();

    if(partition < (u32) usbHandle->GetPartitionTotalCount())
    {
        if (lba == usbHandle->GetLBAStart(partition))
        {
            sprintf(wbfs_fs_drive, "%s:", usbHandle->MountName(partition));
            return 0;
        }
    }

    return -1;
}

void Wbfs_Fat::Close()
{
    if (hdd)
    {
        wbfs_close(hdd);
        hdd = NULL;
    }

    memset(wbfs_fs_drive, 0, sizeof(wbfs_fs_drive));
}

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*) malloc(sizeof(wbfs_disc_info_t));
        if(!iso_file->header)
        {
            free(iso_file);
            return NULL;
        }
        read(fd, iso_file->header, sizeof(wbfs_disc_info_t));
        iso_file->i = fd;
        return iso_file;
    }

    wbfs_t *part = OpenPart(fname);
    if (!part) return NULL;

    wbfs_disc_t *disc = wbfs_open_disc(part, discid);
    if(!disc)
    {
        ClosePart(part);
        return NULL;
    }

    return disc;
}

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(disc->i);
        free(disc->header);
        free(disc);
        return;
    }

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

s32 Wbfs_Fat::GetCount(u32 *count)
{
    GetHeadersCount();
    *count = fat_hdr_count;
    return 0;
}

s32 Wbfs_Fat::GetHeaders(struct discHdr *outbuf, u32 cnt, u32 len)
{
    if(cnt*len > fat_hdr_count*sizeof(struct discHdr))
        return -1;

    memcpy(outbuf, fat_hdr_list, cnt*len);

    SAFE_FREE(fat_hdr_list);
    fat_hdr_count = 0;

    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 = (partition_selector_t) Settings.InstallPartitions;

    ret = wbfs_add_disc(part, __ReadDVD, NULL, ShowProgress, part_sel, 0);
    wbfs_trim(part);
    ClosePart(part);

    if (ret < 0) return ret;

    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 *dir = NULL;
    struct dirent *dirent = NULL;
    char path[MAX_FAT_PATH];
    char name[MAX_FAT_PATH];
    strncpy(path, fname, sizeof(path));
    char *p = strrchr(path, '/');
    if (p) *p = 0;
    dir = opendir(path);
    if (!dir) return 0;
    while ((dirent = readdir(dir)) != 0)
    {
		snprintf(name, sizeof(name), dirent->d_name);
        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;
    }
    closedir(dir);
    // remove game subdir
    unlink(path);

    return 0;
}

s32 Wbfs_Fat::DiskSpace(f32 *used, f32 *free)
{
    static f32 used_cached = 0.0;
    static f32 free_cached = 0.0;
    static int game_count = 0;

    //! Since it's freaken slow, only refresh on new gamecount
    if(used_cached == 0.0 || game_count != gameList.GameCount())
    {
        game_count = gameList.GameCount();
    }
    else
    {
        *used = used_cached;
        *free = free_cached;
        return 0;
    }

    f32 size;
    int ret;
    struct statvfs wbfs_fat_vfs;

    *used = used_cached = 0.0;
    *free = free_cached = 0.0;
    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 = free_cached = (f32) wbfs_fat_vfs.f_frsize * (f32) wbfs_fat_vfs.f_bfree / GB_SIZE;
    *used = used_cached = 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;
}

u64 Wbfs_Fat::EstimateGameSize()
{
    wbfs_t *part = NULL;
    u64 size = (u64) 143432 * 2 * 0x8000ULL;
    u32 n_sector = size / hdd_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, hdd_sector_size, n_sector, 0, 1);
    if (!part) return -1;
    wii_sec_sz = part->wii_sec_sz;

    partition_selector_t part_sel = (partition_selector_t) Settings.InstallPartitions;

    u64 estimated_size = wbfs_estimate_disc(part, __ReadDVD, NULL, part_sel);

    wbfs_close(part);

    return estimated_size;
}

// 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;
    u8 id[8];
    int is_dir;
    int len;
    char fname_title[TITLE_LEN];
    const char *title;
    DIR *dir_iter;
	struct dirent *dirent;

    SAFE_FREE( fat_hdr_list );
    fat_hdr_count = 0;

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

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

    while ((dirent = readdir(dir_iter)) != 0)
    {
        if (dirent->d_name[0] == '.') continue;

        snprintf(fname, sizeof(fname), dirent->d_name);

        // reset id and title
        memset(id, 0, sizeof(id));
        *fname_title = 0;

        const char * fileext = strrchr(fname, '.');
        if(fileext && (strcasecmp(fileext, ".wbfs") == 0 ||
           strcasecmp(fileext, ".iso") == 0 || strcasecmp(fileext, ".ciso") == 0))
        {
            // usb:/wbfs/GAMEID.wbfs
            // or usb:/wbfs/GAMEID.iso
            // or usb:/wbfs/GAMEID.ciso
            int n = fileext - fname; // length withouth .wbfs
            sprintf((char *) id, "%.6s", fname);
            if (n != 6)
            {
                // TITLE [GAMEID].wbfs
                if (!CheckLayoutB(fname, n, id, fname_title)) continue;
            }
            snprintf(fpath, sizeof(fpath), "%s/%s", path, fname);
            is_dir = 0;
        }
        else
        {
            snprintf(fname, sizeof(fname), "%s/%s", path, dirent->d_name);

            if(stat(fname, &st) != 0)
                continue;

            is_dir = S_ISDIR( st.st_mode );
            if(!is_dir) continue;

            snprintf(fname, sizeof(fname), dirent->d_name);

            len = strlen(fname);
            if (len < 8) continue; // "GAMEID_x"

            int lay_a = 0;
            int lay_b = 0;
            if (CheckLayoutB(fname, len, id, fname_title))
            {
                // usb:/wbfs/TITLE[GAMEID]/GAMEID.wbfs
                lay_b = 1;
            }
            else if (fname[6] == '_')
            {
                // usb:/wbfs/GAMEID_TITLE/GAMEID.wbfs
                memcpy(id, fname, 6);

                if(is_gameid((char*) id))
                {
                    lay_a = 1;
                    snprintf(fname_title, sizeof(fname_title), &fname[7]);
                }
            }

            if (!lay_a && !lay_b) continue;

            // check ahead, make sure it succeeds
            snprintf(fpath, sizeof(fpath), "%s/%s/%.6s.wbfs", path, fname, (char *) id);
        }

        // if we have titles.txt entry use that
        title = GameTitles.GetTitle(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);
            snprintf(tmpHdr.title, sizeof(tmpHdr.title), title);
            tmpHdr.magic = 0x5D1C9EA3;
            goto add_hdr;
        }

        if(is_dir)
        {
            if (stat(fpath, &st) != 0)
            {
                // look for direct .iso file
                sprintf(strrchr(fpath, '.'), ".iso"); // replace .wbfs with .iso
                if (stat(fpath, &st) != 0)
                {
                    // look for direct .ciso file
                    sprintf(strrchr(fpath, '.'), ".ciso"); // replace .iso with .ciso
                    if (stat(fpath, &st) != 0) continue;
                }
            }
        }

        // 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
            wbfs_t *part = OpenPart(fpath);
            if (!part)
                continue;

            u32 size;
            // Get header
            int 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;

        // success: add tmpHdr to list:
        add_hdr:

        //! First allocate before reallocating
        if(!fat_hdr_list)
            fat_hdr_list = (struct discHdr *) malloc(sizeof(struct discHdr));

        fat_hdr_count++;
        struct discHdr *tmpList = (struct discHdr *) realloc(fat_hdr_list, fat_hdr_count * sizeof(struct discHdr));
        if(!tmpList)
            break; //out of memory, keep the list until now and stop

        fat_hdr_list = tmpList;
        memcpy(&fat_hdr_list[fat_hdr_count - 1], &tmpHdr, sizeof(struct discHdr));
    }

    closedir(dir_iter);

    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 *dir_iter;
	struct dirent *dirent;
    char gameID[7];
    snprintf(gameID, sizeof(gameID), (char *) id);
    char path[MAX_FAT_PATH];
    strcpy(path, wbfs_fs_drive);
    strcat(path, wbfs_fat_dir);

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

    while ((dirent = readdir(dir_iter)) != 0)
    {
        if(strcasestr(dirent->d_name, gameID) == NULL) continue;

        if (dirent->d_name[0] == '.') continue;
        int n = strlen(dirent->d_name);
        if (n < 8) continue;

        const char *fileext = strrchr(dirent->d_name, '.');
        if(fileext && (strcasecmp(fileext, ".wbfs") == 0 ||
           strcasecmp(fileext, ".iso") == 0 || strcasecmp(fileext, ".ciso") == 0))
        {
            // TITLE [GAMEID].wbfs
            char fn_title[TITLE_LEN];
            u8 fn_id[8];
            int n = fileext - dirent->d_name; // length withouth .wbfs
            if (!CheckLayoutB(dirent->d_name, n, fn_id, fn_title)) continue;
            if (strncmp((char*) fn_id, gameID, 6) != 0) continue;
            snprintf(fname, len, "%s/%s", path, dirent->d_name);
            if (stat(fname, &st) == 0) break;
        }

        snprintf(fname, len, "%s/%s", path, dirent->d_name);

        if(stat(fname, &st) != 0)
        {
            *fname = 0;
            continue;
        }

        if (S_ISDIR( st.st_mode ))
        {
            // look for .wbfs file
            snprintf(fname, len, "%s/%s/%.6s.wbfs", path, dirent->d_name, gameID);
            if (stat(fname, &st) == 0) break;
            // look for .iso file
            snprintf(fname, len, "%s/%s/%.6s.iso", path, dirent->d_name, gameID);
            if (stat(fname, &st) == 0) break;
            // look for .ciso file
            snprintf(fname, len, "%s/%s/%.6s.ciso", path, dirent->d_name, gameID);
            if (stat(fname, &st) == 0) break;
        }

        *fname = 0;
    }
    closedir(dir_iter);

    if (*fname)
        return 2;

    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, hdd_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.InstallToDir)
    {
        strcat(path, "/");
        int layout = 0;
        if (Settings.InstallToDir == 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;

    if(!CreateSubfolder(path)) // game subdir
    {
        ProgressStop();
        ShowError(tr("Error creating path: %s"), path);
        return NULL;
    }

    // 1 cluster less than 4gb
    u64 OPT_split_size = 4LL * 1024 * 1024 * 1024 - 32 * 1024;

    if(Settings.GameSplit == GAMESPLIT_NONE && gameList.GetGameFS(id) != PART_FS_FAT)
        OPT_split_size = (u64) 100LL * 1024 * 1024 * 1024 - 32 * 1024;

    else if(Settings.GameSplit == GAMESPLIT_2GB)
        // 1 cluster less than 2gb
        OPT_split_size = (u64)2LL * 1024 * 1024 * 1024 - 32 * 1024;

    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, hdd_sector_size, n_sector, 0, 1);
    if (!part)
    {
        split_close(&split);
    }
    return part;
}

void Wbfs_Fat::mk_gameid_title(struct discHdr *header, char *name, int re_space, int layout)
{
    int i, len;
    char title[100];
    char id[7];

    snprintf(id, sizeof(id), (char *) header->id);
    snprintf(title, sizeof(title), header->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];

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

    return get_frag_list_for_file(fname, id, GetFSType(), lba);
}