path: root/mbbsd/board.c

/* $Id$ */
#include "bbs.h"
#define BRC_STRLEN 15       /* Length of board name */
#define BRC_MAXSIZE     24576   /* Effective size of brc rc file */
#define BRC_ITEMSIZE    (BRC_STRLEN + 1 + BRC_MAXNUM * sizeof( int ))
    /* Maximum size of each record */
#define BRC_MAXNUM      80      /* Upper bound of brc_num, size of brc_list  */

/* brc rc file form:
 * board_name     15 bytes
 * brc_num         1 byte, binary integer
 * brc_list       brc_num * sizeof(int) bytes, brc_num binary integer(s) */

static time_t   brc_expire_time;
 /* Will be set to the time one year before login. All the files created
  * before then will be recognized read. */

static int      brc_changed = 0;
/* The below two will be filled by read_brc_buf() and brc_update() */
static char    *brc_buf = NULL;
static int      brc_size;

static char * const fn_boardrc = ".boardrc";

static char    *
brc_getrecord(char *ptr, char *endp, char *name, int *pnum, int *list)
{
    int             num;
    char           *tmp;

    if (ptr + BRC_STRLEN + 1 > endp) return endp + 1;
    strncpy(name, ptr, BRC_STRLEN); /* board_name */
    ptr += BRC_STRLEN;
    num = (*ptr++) & 0xff;          /* brc_num */
    tmp = ptr + num * sizeof(int);  /* end of this record */
    if (tmp <= endp){
    if (num > BRC_MAXNUM) /* FIXME if this happens... may crash next time. */
        num = BRC_MAXNUM;
    *pnum = num;
    memcpy(list, ptr, num * sizeof(int)); /* brc_list */
    }
    return tmp;
}

static char    *
brc_putrecord(char *ptr, char *endp, const char *name, int num, const int *list)
{
    if (num > 0 && list[0] > brc_expire_time &&
        ptr + BRC_STRLEN + 1 <= endp) {
    if (num > BRC_MAXNUM)
        num = BRC_MAXNUM;

    while (num > 1 && list[num - 1] < brc_expire_time)
        num--; /* not to write the times before brc_expire_time */

    if( num == 0 ) return ptr;

    strncpy(ptr, name, BRC_STRLEN);  /* write in board_name */
    ptr += BRC_STRLEN;
    *ptr++ = num;                    /* write in brc_num */
    if (ptr + num * sizeof(int) <= endp)
        memcpy(ptr, list, num * sizeof(int)); /* write in brc_list */
    ptr += num * sizeof(int);
    }
    return ptr;
}

static inline void
brc_insert_record(const char* board, int num, int* list)
{
    char            *ptr, *endp, *tmpp = 0;
    char            tmp_buf[BRC_ITEMSIZE];
    char            tmp_name[BRC_STRLEN];
    int             tmp_list[BRC_MAXNUM];
    int             new_size, end_size, tmp_num;
    int             found = 0;

    ptr = brc_buf;
    endp = &brc_buf[brc_size];
    while (ptr < endp && (*ptr >= ' ' && *ptr <= 'z')) {
    /* for each available records */
    tmpp = brc_getrecord(ptr, endp, tmp_name, &tmp_num, tmp_list);

    if ( tmpp > endp ){
        /* dangling, ignore the trailing data */
        brc_size = (int)(ptr - brc_buf);
        break;
    }
    if ( strncmp(tmp_name, board, BRC_STRLEN) == 0 ){
        found = 1;
        break;
    }
    ptr = tmpp;
    }

    if( ! found ){
    /* put on the beginning */
    ptr = brc_putrecord(tmp_buf, tmp_buf + BRC_MAXSIZE,
        board, num, list);
    new_size = (int)(ptr - tmp_buf);
    if( new_size ){
        brc_size += new_size;
        if ( brc_size > BRC_MAXSIZE )
        brc_size = BRC_MAXSIZE;
        memmove(brc_buf + new_size, brc_buf, brc_size);
        memmove(brc_buf, tmp_buf, new_size);
    }
    }else{
    /* ptr points to the old current brc list.
     * tmpp is the end of it (exclusive).       */
    end_size = endp - tmpp;
    new_size = (int)(brc_putrecord(tmp_buf, tmp_buf + BRC_ITEMSIZE,
            board, num, list) - tmp_buf);
    if( new_size ){
        brc_size += new_size - (tmpp - ptr);
        if ( brc_size > BRC_MAXSIZE ){
        end_size -= brc_size - BRC_MAXSIZE;
        brc_size = BRC_MAXSIZE;
        }
        if ( end_size > 0 && ptr + new_size != tmpp )
        memmove(ptr + new_size, tmpp, end_size);
        memmove(ptr, tmp_buf, new_size);
    }else
        memmove(ptr, tmpp, brc_size - (tmpp - brc_buf));
    }

    brc_changed = 0;
}

void
brc_update(){
    if (brc_changed && cuser.userlevel && brc_num > 0)
    brc_insert_record(currboard, brc_num, brc_list);
}

inline static void
read_brc_buf()
{
    if( brc_buf == NULL ){
    char            dirfile[STRLEN];
    int             fd;

    brc_buf = malloc(BRC_MAXSIZE);
    setuserfile(dirfile, fn_boardrc);
    if ((fd = open(dirfile, O_RDONLY)) != -1) {
        brc_size = read(fd, brc_buf, BRC_MAXSIZE);
        close(fd);
    } else {
        brc_size = 0;
    }
    }
}

void
brc_finalize(){
    char brcfile[STRLEN];
    int fd;
    brc_update();
    setuserfile(brcfile, fn_boardrc);
    if (brc_buf != NULL &&
    (fd = open(brcfile, O_WRONLY | O_CREAT | O_TRUNC, 0644)) != -1) {
    write(fd, brc_buf, brc_size);
    close(fd);
    }
}

void
brc_initialize(){
    static char done = 0;
    if( done )
    return;
    done = 1;
    brc_expire_time = login_start_time - 365 * 86400;
    read_brc_buf();
}

int
brc_read_record(const char* bname, int* num, int* list){
    char            *ptr;
    char            *endp;
    char            tmp_name[BRC_STRLEN];
    ptr = brc_buf;
    endp = &brc_buf[brc_size];
    while (ptr < endp && (*ptr >= ' ' && *ptr <= 'z')) {
    /* for each available records */
    ptr = brc_getrecord(ptr, endp, tmp_name, num, list);
    if (strncmp(tmp_name, bname, BRC_STRLEN) == 0)
        return *num;
    }
    *num = list[0] = 1;
    return 0;
}

int
brc_initial_board(const char *boardname)
{
    brc_initialize();

    if (strcmp(currboard, boardname) == 0) {
    return brc_num;
    }

    brc_update(); /* write back first */
    strlcpy(currboard, boardname, sizeof(currboard));
    currbid = getbnum(currboard);
    currbrdattr = bcache[currbid - 1].brdattr;

    return brc_read_record(boardname, &brc_num, brc_list);
}

static void
brc_trunc(const char* brdname, int ftime){
    brc_insert_record(brdname, 1, &ftime);
    if (strncmp(brdname, currboard, BRC_STRLEN) == 0){
    brc_num = 1;
    brc_list[0] = ftime;
    brc_changed = 0;
    }
}

void
brc_addlist(const char *fname)
{
    int             ftime, n, i;

    if (!cuser.userlevel)
    return;

    ftime = atoi(&fname[2]);
    if (ftime <= brc_expire_time /* too old, don't do any thing  */
     /* || fname[0] != 'M' || fname[1] != '.' */ ) {
    return;
    }
    if (brc_num <= 0) { /* uninitialized */
    brc_list[0] = ftime;
    brc_num = 1;
    brc_changed = 1;
    return;
    }
    if ((brc_num == 1) && (ftime < brc_list[0])) /* most when after 'v' */
    return;
    for (n = 0; n < brc_num; n++) { /* using linear search */
    if (ftime == brc_list[n]) {
        return;
    } else if (ftime > brc_list[n]) {
        if (brc_num < BRC_MAXNUM)
        brc_num++;
        /* insert ftime in to brc_list */
        for (i = brc_num - 1; --i >= n; brc_list[i + 1] = brc_list[i]);
        brc_list[n] = ftime;
        brc_changed = 1;
        return;
    }
    }
}

static int
brc_unread_time(time_t ftime, int bnum, const int *blist)
{
    int             n;

    if (ftime <= brc_expire_time) /* too old */
    return 0;

    if (brc_num <= 0)
    return 1;
    for (n = 0; n < bnum; n++) { /* using linear search */
    if (ftime > blist[n])
        return 1;
    else if (ftime == blist[n])
        return 0;
    }
    return 0;
}

int
brc_unread(const char *fname, int bnum, const int *blist)
{
    int             ftime, n;

    ftime = atoi(&fname[2]); /* this will get the time of the file created */

    if (ftime <= brc_expire_time) /* too old */
    return 0;

    if (brc_num <= 0)
    return 1;
    for (n = 0; n < bnum; n++) { /* using linear search */
    if (ftime > blist[n])
        return 1;
    else if (ftime == blist[n])
        return 0;
    }
    return 0;
}

/* personal board state
 * 相對於看板的 attr (BRD_* in ../include/pttstruct.h),
 * 這些是用在 user interface 的 flag */
#define NBRD_FAV         1
#define NBRD_BOARD   2
#define NBRD_LINE        4
#define NBRD_FOLDER  8
#define NBRD_TAG    16
#define NBRD_UNREAD     32
#define NBRD_SYMBOLIC   64

#define TITLE_MATCH(bptr, key)  ((key)[0] && !strcasestr((bptr)->title, (key)))


#define B_TOTAL(bptr)        (SHM->total[(bptr)->bid - 1])
#define B_LASTPOSTTIME(bptr) (SHM->lastposttime[(bptr)->bid - 1])
#define B_BH(bptr)           (&bcache[(bptr)->bid - 1])
typedef struct {
    int             bid;
    unsigned char   myattr;
} __attribute__ ((packed)) boardstat_t;

static boardstat_t *nbrd = NULL;
static char choose_board_depth = 0;
static short    brdnum;
static char     yank_flag = 1;

inline int getbid(boardheader_t *fh)
{
    return (fh - bcache);
}

void imovefav(int old)
{
    char buf[5];
    int new;
    
    getdata(b_lines - 1, 0, "請輸入新次序:", buf, sizeof(buf), DOECHO);
    new = atoi(buf) - 1;
    if (new < 0 || brdnum <= new){
    vmsg("輸入範圍有誤!");
    return;
    }
    move_in_current_folder(old, new);
}

void load_brdbuf(void)
{
    char    buf[128];
    setuserfile(buf, FAV4);
    if( !dashf(buf) ) {
    fav_v3_to_v4();
    }
    fav_load();

    /* subscribe new fav (deprecated) */
    if (get_fav_root() != NULL)
    updatenewfav(1);
}

void
init_brdbuf()
{
    brc_initialize();
    brc_initial_board(DEFAULT_BOARD);
    set_board();
}

void
save_brdbuf(void)
{
    fav_save();
    fav_free();
}

int
HasPerm(boardheader_t * bptr)
{
    register int    level, brdattr;

    level = bptr->level;
    brdattr = bptr->brdattr;

    if (HAS_PERM(PERM_SYSOP))
    return 1;

    if( is_BM_cache(bptr - bcache + 1) ) /* XXXbid */
    return 1;

    /* 祕密看板：核對首席板主的好友名單 */

    if (brdattr & BRD_HIDE) {   /* 隱藏 */
    if (hbflcheck((int)(bptr - bcache) + 1, currutmp->uid)) {
        if (brdattr & BRD_POSTMASK)
        return 0;
        else
        return 2;
    } else
        return 1;
    }
    /* 限制閱讀權限 */
    if (level && !(brdattr & BRD_POSTMASK) && !HAS_PERM(level))
    return 0;

    return 1;
}

#if 0
static int
have_author(char *brdname)
{
    char            dirname[100];

    snprintf(dirname, sizeof(dirname),
         "正在搜尋作者%s 看板:%s.....",
         currauthor, brdname);
    move(b_lines, 0);
    clrtoeol();
    outs(dirname);
    refresh();

    setbdir(dirname, brdname);
    str_lower(currowner, currauthor);

    return search_rec(dirname, cmpfowner);
}
#endif

static int
check_newpost(boardstat_t * ptr)
{               /* Ptt 改 */
    int             tbrc_list[BRC_MAXNUM], tbrc_num;
    time_t          ftime;

    ptr->myattr &= ~NBRD_UNREAD;
    if (B_BH(ptr)->brdattr & BRD_GROUPBOARD)
    return 0;

    if (B_TOTAL(ptr) == 0)
    setbtotal(ptr->bid);
    if (B_TOTAL(ptr) == 0)
    return 0;
    ftime = B_LASTPOSTTIME(ptr);
    if (ftime > now)
    ftime = B_LASTPOSTTIME(ptr) = now - 1;

    if ( brc_read_record(B_BH(ptr)->brdname, &tbrc_num, tbrc_list) == 0 ||
     brc_unread_time(ftime, tbrc_num, tbrc_list) )
    ptr->myattr |= NBRD_UNREAD;
    
    return 1;
}

static void
load_uidofgid(const int gid, const int type)
{
    boardheader_t  *bptr, *currbptr;
    int             n, childcount = 0;
    currbptr = &bcache[gid - 1];
    for (n = 0; n < numboards; ++n) {
    bptr = SHM->bsorted[type][n];
    if (bptr->brdname[0] == '\0')
        continue;
    if (bptr->gid == gid) {
        if (currbptr == &bcache[gid - 1])
        currbptr->firstchild[type] = bptr;
        else {
        currbptr->next[type] = bptr;
        currbptr->parent = &bcache[gid - 1];
        }
        childcount++;
        currbptr = bptr;
    }
    }
    bcache[gid - 1].childcount = childcount;
    if (currbptr == &bcache[gid - 1])
    currbptr->firstchild[type] = NULL;
    else
    currbptr->next[type] = NULL;
}

static boardstat_t *
addnewbrdstat(int n, int state)
{
    boardstat_t    *ptr;

    ptr = &nbrd[brdnum++];
    //boardheader_t  *bptr = &bcache[n];
    //ptr->total = &(SHM->total[n]);
    //ptr->lastposttime = &(SHM->lastposttime[n]);
    
    ptr->bid = n + 1;
    ptr->myattr = state;
    if ((B_BH(ptr)->brdattr & BRD_HIDE) && state == NBRD_BOARD)
    B_BH(ptr)->brdattr |= BRD_POSTMASK;
    if (yank_flag != 0)
    ptr->myattr &= ~NBRD_FAV;
    check_newpost(ptr);
    return ptr;
}

static int
cmpboardfriends(const void *brd, const void *tmp)
{
    return ((B_BH((boardstat_t*)tmp)->nuser) -
        (B_BH((boardstat_t*)brd)->nuser));
}

static void
load_boards(char *key)
{
    boardheader_t  *bptr = NULL;
    int             type = cuser.uflag & BRDSORT_FLAG ? 1 : 0;
    int             i, n;
    int             state;
    char            byMALLOC = 0, needREALLOC = 0;

    if (class_bid > 0) {
    bptr = &bcache[class_bid - 1];
    if (bptr->firstchild[type] == NULL || bptr->childcount <= 0)
        load_uidofgid(class_bid, type);
    }
    brdnum = 0;
    if (nbrd) {
        free(nbrd);
    nbrd = NULL;
    }
    if (class_bid <= 0) {
    if( yank_flag == 0 ){ // fav mode
        fav_t *fav = get_current_fav();

        nbrd = (boardstat_t *)malloc(sizeof(boardstat_t) * get_data_number(fav));
            for( i = 0 ; i < fav->DataTail; ++i ){
        int state;
        if (!(fav->favh[i].attr & FAVH_FAV))
            continue;

        if ( !key[0] ){
            if (get_item_type(&fav->favh[i]) == FAVT_LINE )
            state = NBRD_LINE;
            else if (get_item_type(&fav->favh[i]) == FAVT_FOLDER )
            state = NBRD_FOLDER;
            else {
            bptr = &bcache[ fav_getid(&fav->favh[i]) - 1];
            state = NBRD_BOARD;
            if (is_set_attr(&fav->favh[i], FAVH_UNREAD))
                state |= NBRD_UNREAD;
            }
        } else {
            if (get_item_type(&fav->favh[i]) == FAVT_LINE )
            continue;
            else if (get_item_type(&fav->favh[i]) == FAVT_FOLDER ){
            if( strcasestr(
                get_folder_title(fav_getid(&fav->favh[i])),
                key)
            )
                state = NBRD_FOLDER;
            else
                continue;
            }else{
            bptr = &bcache[ fav_getid(&fav->favh[i]) - 1];
            if( HasPerm(bptr) && strcasestr(bptr->title, key))
                state = NBRD_BOARD;
            else
                continue;
            if (is_set_attr(&fav->favh[i], FAVH_UNREAD))
                state |= NBRD_UNREAD;
            }
        }

        if (is_set_attr(&fav->favh[i], FAVH_TAG))
            state |= NBRD_TAG;
        if (is_set_attr(&fav->favh[i], FAVH_ADM_TAG))
            state |= NBRD_TAG;
        addnewbrdstat(fav_getid(&fav->favh[i]) - 1, NBRD_FAV | state);
        }
        if (brdnum == 0)
        addnewbrdstat(0, 0);
        byMALLOC = 0;
        needREALLOC = (get_data_number(fav) != brdnum);
    }
#if HOTBOARDCACHE
    else if( class_bid == -1 ){
        nbrd = (boardstat_t *)malloc(sizeof(boardstat_t) * SHM->nHOTs);
        for( i = 0 ; i < SHM->nHOTs ; ++i )
        addnewbrdstat(SHM->HBcache[i] - SHM->bcache,
                  HasPerm(SHM->HBcache[i]));
    }
#endif
    else { // general case
        nbrd = (boardstat_t *) MALLOC(sizeof(boardstat_t) * numboards);
        for (i = 0; i < numboards; i++) {
        if ((bptr = SHM->bsorted[type][i]) == NULL)
            continue;
        n = getbid(bptr);
        if (!bptr->brdname[0] ||
            (bptr->brdattr & (BRD_GROUPBOARD | BRD_SYMBOLIC)) ||
            !((state = HasPerm(bptr)) || GROUPOP()) ||
            TITLE_MATCH(bptr, key)
#if ! HOTBOARDCACHE
            || (class_bid == -1 && bptr->nuser < 5)
#endif
            )
            continue;
        addnewbrdstat(n, state);
        }
#ifdef CRITICAL_MEMORY
        byMALLOC = 1;
#else
        byMALLOC = 0;
#endif
        needREALLOC = 1;
    }
#if ! HOTBOARDCACHE
    if (class_bid == -1)
        qsort(nbrd, brdnum, sizeof(boardstat_t), cmpboardfriends);
#endif
    } else { /* load boards of a subclass */
    int     childcount = bptr->childcount;
    nbrd = (boardstat_t *) malloc(childcount * sizeof(boardstat_t));
    for (bptr = bptr->firstchild[type]; bptr != NULL;
         bptr = bptr->next[type]) {
        n = getbid(bptr);
        state = HasPerm(bptr);
        if ( !(state || GROUPOP()) || TITLE_MATCH(bptr, key) )
        continue;

        if (bptr->brdattr & BRD_SYMBOLIC) {

        /* Only SYSOP knows a board is symbolic */
        if (HAS_PERM(PERM_SYSOP))
            state |= NBRD_SYMBOLIC;
        else
            n = BRD_LINK_TARGET(bptr) - 1;
        }
        addnewbrdstat(n, state);
    }
    byMALLOC = 0;
    needREALLOC = (childcount != brdnum);
    }

    if( needREALLOC ){
    if( byMALLOC ){
        boardstat_t *newnbrd;
        newnbrd = (boardstat_t *)malloc(sizeof(boardstat_t) * brdnum);
        memcpy(newnbrd, nbrd, sizeof(boardstat_t) * brdnum);
        FREE(nbrd);
        nbrd = newnbrd;
    }
    else {
        nbrd = (boardstat_t *)realloc(nbrd, sizeof(boardstat_t) * brdnum);
    }
    }
}

static int
search_board()
{
    int             num;
    char            genbuf[IDLEN + 2];
    move(0, 0);
    clrtoeol();
    CreateNameList();
    for (num = 0; num < brdnum; num++)
    if (yank_flag != 0 ||
        (nbrd[num].myattr & NBRD_BOARD && HasPerm(B_BH(&nbrd[num]))) )
        AddNameList(B_BH(&nbrd[num])->brdname);
    namecomplete(MSG_SELECT_BOARD, genbuf);
    FreeNameList();
    toplev = NULL;

    for (num = 0; num < brdnum; num++)
    if (!strcasecmp(B_BH(&nbrd[num])->brdname, genbuf))
        return num;
    return -1;
}

static int
unread_position(char *dirfile, boardstat_t * ptr)
{
    fileheader_t    fh;
    char            fname[FNLEN];
    register int    num, fd, step, total;

    total = B_TOTAL(ptr);
    num = total + 1;
    if ((ptr->myattr & NBRD_UNREAD) && (fd = open(dirfile, O_RDWR)) > 0) {
    if (!brc_initial_board(B_BH(ptr)->brdname)) {
        num = 1;
    } else {
        num = total - 1;
        step = 4;
        while (num > 0) {
        lseek(fd, (off_t) (num * sizeof(fh)), SEEK_SET);
        if (read(fd, fname, FNLEN) <= 0 ||
            !brc_unread(fname, brc_num, brc_list))
            break;
        num -= step;
        if (step < 32)
            step += step >> 1;
        }
        if (num < 0)
        num = 0;
        while (num < total) {
        lseek(fd, (off_t) (num * sizeof(fh)), SEEK_SET);
        if (read(fd, fname, FNLEN) <= 0 ||
            brc_unread(fname, brc_num, brc_list))
            break;
        num++;
        }
    }
    close(fd);
    }
    if (num < 0)
    num = 0;
    return num;
}

static char
get_fav_type(boardstat_t *ptr)
{
    if (ptr->myattr & NBRD_FOLDER)
    return FAVT_FOLDER;
    else if (ptr->myattr & NBRD_BOARD)
    return FAVT_BOARD;
    else if (ptr->myattr & NBRD_LINE)
    return FAVT_LINE;
    return 0;
}

static void
brdlist_foot()
{
    prints("\033[34;46m  選擇看板  \033[31;47m  (c)\033[30m新文章模式  "
       "\033[31m(v/V)\033[30m標記已讀/未讀  \033[31m(y)\033[30m篩選%s"
       "  \033[31m(m)\033[30m切換最愛  \033[m",
       yank_flag == 0 ? "最愛" : yank_flag == 1 ? "部份" : "全部");
}

static void
show_brdlist(int head, int clsflag, int newflag)
{
    int             myrow = 2;
    if (class_bid == 1) {
    currstat = CLASS;
    myrow = 6;
    showtitle("分類看板", BBSName);
    movie(0);
    move(1, 0);
    outs(
        "                                                              "
        "◣  ╭—\033[33m●\n"
        "                                                    ╬—  \033[m "
        "◢█\033[47m⊙\033[40m██◣╤\n"
        "  \033[44m   ︿︿︿︿︿︿︿︿                               "
        "\033[33m║\033[m\033[44m ◣◢███▼▼▼║ \033[m\n"
        "  \033[44m                                                  "
        "\033[33m  \033[m\033[44m ◤◥███▲▲▲ ║\033[m\n"
        "                                  ︿︿︿︿︿︿︿︿    \033[33m"
        "│\033[m   ◥████◤ ║\n"
        "                                                      \033[33m╫"
        "——\033[m  ◤      —＋\033[m");
    } else if (clsflag) {
    showtitle("看板列表", BBSName);
    prints("[←]主選單 [→]閱\讀 [↑↓]選擇 [y]載入 [S]排序 [/]搜尋 "
           "[TAB]文摘‧看板 [h]求助\n"
           "\033[7m%-20s 類別 轉信%-31s人氣 板    主     \033[m",
           newflag ? "總數 未讀 看  板" : "  編號  看  板",
           "  中   文   敘   述");
    move(b_lines, 0);
    brdlist_foot();
    }
    if (brdnum > 0) {
    boardstat_t    *ptr;
    char    *color[8] = {"", "\033[32m",
        "\033[33m", "\033[36m", "\033[34m", "\033[1m",
    "\033[1;32m", "\033[1;33m"};
    char    *unread[2] = {"\33[37m  \033[m", "\033[1;31mˇ\033[m"};

    if (yank_flag == 0 && get_fav_type(&nbrd[0]) == 0){
        move(3, 0);
        prints("        --- 空目錄 ---");
        return;
    }

    while (++myrow < b_lines) {
        move(myrow, 0);
        clrtoeol();
        if (head < brdnum) {
        ptr = &nbrd[head++];
        if (ptr->myattr & NBRD_LINE){
            if( !newflag )
            prints("%5d %c %s------------      ------------------------------------------\033[m",
                head,
                ptr->myattr & NBRD_TAG ? 'D' : ' ',
                ptr->myattr & NBRD_FAV ? "" : "\033[1;30m");
            else
            prints("        %s------------      ------------------------------------------\033[m", ptr->myattr & NBRD_FAV ? "" : "\033[1;30m");
            continue;
        }
        else if (ptr->myattr & NBRD_FOLDER){
            char *title = get_folder_title(ptr->bid);
            if( !newflag )
            prints("%5d %c %sMyFavFolder\033[m  目錄 □%-34s\033[m",
                head,
                ptr->myattr & NBRD_TAG ? 'D' : ' ',
                !(cuser.uflag2 & FAVNOHILIGHT) ? "\033[1;36m" : "",
                title);
            else
            prints("%6d  %sMyFavFolder\033[m  目錄 □%-34s\033[m",
                get_data_number(get_fav_folder(getfolder(ptr->bid))),
                !(cuser.uflag2 & FAVNOHILIGHT) ? "\033[1;36m" : "",
                title);
            continue;
        }

        if (class_bid == 1)
            prints("          ");
        if (!newflag) {
            prints("%5d%c%s", head,
               !(B_BH(ptr)->brdattr & BRD_HIDE) ? ' ' :
               (B_BH(ptr)->brdattr & BRD_POSTMASK) ? ')' : '-',
               (ptr->myattr & NBRD_TAG) ? "D " :
               (B_BH(ptr)->brdattr & BRD_GROUPBOARD) ? "  " :
               unread[ptr->myattr & NBRD_UNREAD ? 1 : 0]);
        } else {
            if (B_BH(ptr)->brdattr & BRD_GROUPBOARD)
            prints("        ");
            else
            prints("%6d%s", (int)(B_TOTAL(ptr)),
                unread[ptr->myattr & NBRD_UNREAD ? 1 : 0]);
        }
        if (class_bid != 1) {
            if (!GROUPOP() && !HasPerm(B_BH(ptr))) {
            prints("Unknown??    隱板 ？這個板是隱板");
            }
            else {
            prints("%s%-13s\033[m%s%5.5s\033[0;37m%2.2s\033[m"
                "%-34.34s",
                ((!(cuser.uflag2 & FAVNOHILIGHT) &&
                  getboard(ptr->bid) != NULL))? "\033[1;36m" : "",
                B_BH(ptr)->brdname,
                color[(unsigned int)
                (B_BH(ptr)->title[1] + B_BH(ptr)->title[2] +
                 B_BH(ptr)->title[3] + B_BH(ptr)->title[0]) & 07],
                B_BH(ptr)->title, B_BH(ptr)->title + 5, B_BH(ptr)->title + 7);

            if (B_BH(ptr)->brdattr & BRD_BAD)
                prints(" X ");
            else if (B_BH(ptr)->nuser >= 5000)
                prints("\033[1;34m爆!\033[m");
            else if (B_BH(ptr)->nuser >= 2000)
                prints("\033[1;31m爆!\033[m");
            else if (B_BH(ptr)->nuser >= 1000)
                prints("\033[1m爆!\033[m");
            else if (B_BH(ptr)->nuser >= 100)
                prints("\033[1mHOT\033[m");
            else if (B_BH(ptr)->nuser > 50)
                prints("\033[1;31m%2d\033[m ", B_BH(ptr)->nuser);
            else if (B_BH(ptr)->nuser > 10)
                prints("\033[1;33m%2d\033[m ", B_BH(ptr)->nuser);
            else if (B_BH(ptr)->nuser > 0)
                prints("%2d ", B_BH(ptr)->nuser);
            else
                prints(" %c ", B_BH(ptr)->bvote ? 'V' : ' ');
            prints("%.*s\033[K", t_columns - 67, B_BH(ptr)->BM);
            }
        } else {
            prints("%-40.40s %.*s", B_BH(ptr)->title + 7,
               t_columns - 67, B_BH(ptr)->BM);
        }
        }
        clrtoeol();
    }
    }
}

static char    *choosebrdhelp[] = {
    "\0看板選單輔助說明",
    "\01基本指令",
    "(p)(↑)/(n)(↓)上一個看板 / 下一個看板",
    "(P)(^B)(PgUp)  上一頁看板",
    "(N)(^F)(PgDn)  下一頁看板",
    "($)/(s)/(/)    最後一個看板 / 搜尋看板 / 以中文搜尋看板關鍵字",
    "(數字)         跳至該項目",
    "\01進階指令",
    "(^W)           迷路了 我在哪裡",
    "(r)(→)/(q)(←)進入多功\能閱\讀選單 / 回到主選單",
    "(y/Z)          我的最愛,訂閱\看板,所有看板 / 訂閱\新開看板",
    "(L/g)          加入分隔線 / 目錄至我的最愛",
    "(K/T)          備份,清理我的最愛 / 修改我的最愛目錄名稱",
    "(v/V)          通通看完/全部未讀",
    "(S)            按照字母/分類排序",
    "(t/^T/^A/^D)   標記看板/取消所有標記/ 將已標記者加入/移出我的最愛",
    "(m/M)          把看板加入或移出我的最愛,移除分隔線/搬移我的最愛",
    "\01小組長指令",
    "(E/W/B)        設定看板/設定小組備忘/開新看板",
    "(^P)           移動已標記看板到此分類",
    NULL
};


static void
set_menu_BM(char *BM)
{
    if (HAS_PERM(PERM_ALLBOARD) || is_BM(BM)) {
    currmode |= MODE_GROUPOP;
    cuser.userlevel |= PERM_SYSSUBOP;
    }
}

static void replace_link_by_target(boardstat_t *board)
{
    board->bid = BRD_LINK_TARGET(&bcache[board->bid - 1]);
    board->myattr &= ~NBRD_SYMBOLIC;
}

static void
choose_board(int newflag)
{
    static short    num = 0;
    boardstat_t    *ptr;
    int             head = -1, ch = 0, currmodetmp, tmp, tmp1, bidtmp;
    char            keyword[13] = "", buf[64];

    setutmpmode(newflag ? READNEW : READBRD);
    if( get_current_fav() == NULL )
    load_brdbuf();
    ++choose_board_depth;
    brdnum = 0;
    if (!cuser.userlevel)   /* guest yank all boards */
    yank_flag = 2;

    do {
    if (brdnum <= 0) {
        load_boards(keyword);
        if (brdnum <= 0 && yank_flag > 0) {
        if (keyword[0] != 0) {
            mprints(b_lines - 1, 0, "沒有任何看板標題有此關鍵字 "
                "(板主應注意看板標題命名)");
            pressanykey();
            keyword[0] = 0;
            brdnum = -1;
            continue;
        }
        if (yank_flag < 2) {
            brdnum = -1;
            yank_flag++;
            continue;
        }
        if (HAS_PERM(PERM_SYSOP) || GROUPOP()) {
            if (m_newbrd(0) == -1)
            break;
            brdnum = -1;
            continue;
        } else
            break;
        }
        head = -1;
    }

    /* reset the cursor when out of range */
    if (num < 0)
        num = 0;
    else if (num >= brdnum)
        num = brdnum - 1;

    if (head < 0) {
        if (newflag) {
        tmp = num;
        while (num < brdnum) {
            ptr = &nbrd[num];
            if (ptr->myattr & NBRD_UNREAD)
            break;
            num++;
        }
        if (num >= brdnum)
            num = tmp;
        }
        head = (num / p_lines) * p_lines;
        show_brdlist(head, 1, newflag);
    } else if (num < head || num >= head + p_lines) {
        head = (num / p_lines) * p_lines;
        show_brdlist(head, 0, newflag);
    }
    if (class_bid == 1)
        ch = cursor_key(7 + num - head, 10);
    else
        ch = cursor_key(3 + num - head, 0);

    switch (ch) {
    case Ctrl('W'):
        whereami(0, NULL, NULL);
        head = -1;
        break;
    case 'e':
    case KEY_LEFT:
    case EOF:
        ch = 'q';
    case 'q':
        if (keyword[0]) {
        keyword[0] = 0;
        brdnum = -1;
        ch = ' ';
        }
        break;
    case 'c':
        show_brdlist(head, 1, newflag ^= 1);
        break;
    case KEY_PGUP:
    case 'P':
    case 'b':
    case Ctrl('B'):
        if (num) {
        num -= p_lines;
        break;
        }
    case KEY_END:
    case '$':
        num = brdnum - 1;
        break;
    case ' ':
    case KEY_PGDN:
    case 'N':
    case Ctrl('F'):
        if (num == brdnum - 1)
        num = 0;
        else
        num += p_lines;
        break;
    case Ctrl('I'):
        t_idle();
        show_brdlist(head, 1, newflag);
        break;
    case KEY_UP:
    case 'p':
    case 'k':
        if (num-- <= 0)
        num = brdnum - 1;
        break;
    case 't':
        ptr = &nbrd[num];
        if (yank_flag == 0 && get_fav_type(&nbrd[0]) != 0) {
        fav_tag(ptr->bid, get_fav_type(ptr), 2);
        }
        else if (yank_flag != 0) {
        /* 站長管理用的 tag */
        if (ptr->myattr & NBRD_TAG)
            set_attr(getadmtag(ptr->bid), FAVH_ADM_TAG, 0);
        else
            fav_add_admtag(ptr->bid);
        }
        ptr->myattr ^= NBRD_TAG;
        head = 9999;
    case KEY_DOWN:
    case 'n':
    case 'j':
        if (++num < brdnum)
        break;
    case '0':
    case KEY_HOME:
        num = 0;
        break;
    case '1':
    case '2':
    case '3':
    case '4':
    case '5':
    case '6':
    case '7':
    case '8':
    case '9':
        if ((tmp = search_num(ch, brdnum)) >= 0)
        num = tmp;
        brdlist_foot();
        break;
    case 'F':
    case 'f':
        if (class_bid>0 && HAS_PERM(PERM_SYSOP)) {
        bcache[class_bid - 1].firstchild[cuser.uflag & BRDSORT_FLAG ? 1 : 0]
            = NULL;
        brdnum = -1;
        }
        break;
    case 'h':
        show_help(choosebrdhelp);
        show_brdlist(head, 1, newflag);
        break;
    case '/':
        getdata_buf(b_lines - 1, 0, "請輸入看板中文關鍵字:",
            keyword, sizeof(keyword), DOECHO);
        brdnum = -1;
        break;
    case 'S':
        if(yank_flag == 0){
        move(b_lines - 2, 0);
        prints("重新排序看板 "
            "\033[1;33m(注意, 這個動作會覆寫原來設定)\033[m \n");
        tmp = getans("排序方式 (1)按照板名排序 (2)按照類別排序 ==> [0]取消 ");
        if( tmp == '1' )
            fav_sort_by_name();
        else if( tmp == '2' )
            fav_sort_by_class();
        }
        else
        cuser.uflag ^= BRDSORT_FLAG;
        brdnum = -1;
        break;
    case 'y':
        if (get_current_fav() != NULL || yank_flag != 0)
        yank_flag = (yank_flag + 1) % 2;
        brdnum = -1;
        break;
    case Ctrl('D'):
        if (HAS_PERM(PERM_LOGINOK)) {
        fav_remove_all_tagged_item();
        brdnum = -1;
        }
        break;
    case Ctrl('A'):
        if (HAS_PERM(PERM_LOGINOK)) {
        fav_add_all_tagged_item();
        brdnum = -1;
        }
        break;
    case Ctrl('T'):
        if (HAS_PERM(PERM_LOGINOK)) {
        fav_remove_all_tag();
        brdnum = -1;
        }
        break;
    case Ctrl('P'):
        if (class_bid != 0 &&
        (HAS_PERM(PERM_SYSOP) || GROUPOP())) {
        fav_t *fav = get_current_fav();
        for (tmp = 0; tmp < fav->DataTail; tmp++) {
            short   bid = fav_getid(&fav->favh[tmp]);
            boardheader_t  *bh = &bcache[ bid - 1 ];
            if( !is_set_attr(&fav->favh[tmp], FAVH_ADM_TAG))
            continue;
            set_attr(&fav->favh[tmp], FAVH_ADM_TAG, 0);
            if (bh->gid != class_bid) {
            bh->gid = class_bid;
            substitute_record(FN_BOARD, bh,
                      sizeof(boardheader_t), bid);
            reset_board(bid);
            log_usies("SetBoardGID", bh->brdname);
            }
        }
        brdnum = -1;
        }
        break;
    case 'L':
        if (HAS_PERM(PERM_SYSOP) && class_bid > 0) {
        if (make_symbolic_link_interactively(class_bid) < 0)
            break;
        brdnum = -1;
        head = 9999;
        }
        else if (HAS_PERM(PERM_LOGINOK) && yank_flag == 0) {
        if (fav_add_line() == NULL) {
            vmsg("新增失敗，分隔線/總最愛 數量達最大值。");
            break;
        }
        /* done move if it's the first item. */
        if (get_fav_type(&nbrd[0]) != 0)
            move_in_current_folder(brdnum, num);
        brdnum = -1;
        head = 9999;
        }
        break;
/*
    case 'l':
        if (HAS_PERM(PERM_SYSOP) && (nbrd[num].myattr & NBRD_SYMBOLIC)) {
        replace_link_by_target(&nbrd[num]);
        head = 9999;
        }
        break;
*/
    case 'm':
        if (HAS_PERM(PERM_LOGINOK)) {
        ptr = &nbrd[num];
        if (yank_flag == 0) {
            if (ptr->myattr & NBRD_FAV) {
            if (getans("你確定刪除嗎? [N/y]") != 'y')
                break;
            fav_remove_item(ptr->bid, get_fav_type(ptr));
            ptr->myattr &= ~NBRD_FAV;
            }
        }
        else {
            if (getboard(ptr->bid) != NULL) {
            fav_remove_item(ptr->bid, FAVT_BOARD);
            ptr->myattr &= ~NBRD_FAV;
            }
            else {
            if (fav_add_board(ptr->bid) == NULL)
                vmsg("你的最愛太多了啦 真花心");
            else
                ptr->myattr |= NBRD_FAV;
            }
        }
        brdnum = -1;
        head = 9999;
        }
        break;
    case 'M':
        if (HAS_PERM(PERM_LOGINOK)){
        if (class_bid == 0 && yank_flag == 0){
            imovefav(num);
            brdnum = -1;
            head = 9999;
        }
        }
        break;
    case 'g':
        if (HAS_PERM(PERM_LOGINOK) && yank_flag == 0) {
        fav_type_t  *ft;
        if (fav_stack_full()){
            vmsg("目錄已達最大層數!!");
            break;
        }
        if ((ft = fav_add_folder()) == NULL) {
            vmsg("新增失敗，目錄/總最愛 數量達最大值。");
            break;
        }
        fav_set_folder_title(ft, "新的目錄");
        /* don't move if it's the first item */
        if (get_fav_type(&nbrd[0]) != 0)
            move_in_current_folder(brdnum, num);
        brdnum = -1;
            head = 9999;
        }
        break;
    case 'T':
        if (HAS_PERM(PERM_LOGINOK) && nbrd[num].myattr & NBRD_FOLDER) {
        fav_type_t *ft = getfolder(nbrd[num].bid);
        strlcpy(buf, get_item_title(ft), sizeof(buf));
        getdata_buf(b_lines - 1, 0, "請輸入板名:", buf, 65, DOECHO);
        fav_set_folder_title(ft, buf);
        brdnum = -1;
        }
        break;
    case 'K':
        if (HAS_PERM(PERM_LOGINOK)) {
        char c, fname[80];
        if (!current_fav_at_root()) {
            vmsg("請到我的最愛最上層執行本功\能");
            break;
        }

        c = getans("請選擇 1)清除不可見看板 2)備份我的最愛 3)取回最愛備份 [Q]");
        if(!c)
            break;
        if(getans("確定嗎 [y/N] ") != 'y')
            break;
        switch(c){
            case '1':
            fav_clean_invisible();
            break;
            case '2':
            fav_save();
            setuserfile(fname, FAV4);
            sprintf(buf, "%s.bak", fname);
                        Copy(fname, buf);
            break;
            case '3':
            setuserfile(fname, FAV4);
            sprintf(buf, "%s.bak", fname);
            if (!dashf(buf)){
                vmsg("你沒有備份你的最愛喔");
                break;
            }
                        Copy(buf, fname);
            fav_free();
            fav_load();
            break;
        }
        brdnum = -1;
        }
        break;
    case 'z':
        if (HAS_PERM(PERM_LOGINOK))
        vmsg("嘿嘿 這個功\能已經被我的最愛取代掉了喔!");
        break;
#ifdef DEBUG
    case 'A':
        if (1) {
        char genbuf[200];
        sprintf(genbuf, "brdnum: %d  num: %d", brdnum, num);
        vmsg(genbuf);
        }
        break;
#endif
    case 'Z':
        if (HAS_PERM(PERM_LOGINOK)) {
        char genbuf[256];
        sprintf(genbuf, "確定要 %s訂閱\ 新看板? [N/y] ", cuser.uflag2 & FAVNEW_FLAG ? "取消" : "");
        if (getans(genbuf) != 'y')
            break;

        cuser.uflag2 ^= FAVNEW_FLAG;
        if (cuser.uflag2 & FAVNEW_FLAG) {
            subscribe_newfav();
            vmsg("切換為訂閱\新看板模式");
        }
        else
            vmsg("取消訂閱\新看板");
        }
        break;

    case 'v':
    case 'V':
        ptr = &nbrd[num];
        if(nbrd[num].bid < 0 || !HasPerm(B_BH(ptr)))
        break;
        if (ch == 'v') {
        ptr->myattr &= ~NBRD_UNREAD;
        brc_trunc(B_BH(ptr)->brdname, now);
        setbrdtime(ptr->bid, now);
        } else {
        brc_trunc(B_BH(ptr)->brdname, 1);
        setbrdtime(ptr->bid, 1);
        ptr->myattr |= NBRD_UNREAD;
        }
        show_brdlist(head, 0, newflag);
        break;
    case 's':
        if ((tmp = search_board()) == -1) {
        show_brdlist(head, 1, newflag);
        break;
        }
        num = tmp;
        break;
    case 'E':
        if (HAS_PERM(PERM_SYSOP) || GROUPOP()) {
        ptr = &nbrd[num];
        move(1, 1);
        clrtobot();
        m_mod_board(B_BH(ptr)->brdname);
        brdnum = -1;
        }
        break;
    case 'R':
        if (HAS_PERM(PERM_SYSOP) || GROUPOP()) {
        m_newbrd(1);
        brdnum = -1;
        }
        break;
    case 'B':
        if (HAS_PERM(PERM_SYSOP) || GROUPOP()) {
        m_newbrd(0);
        brdnum = -1;
        }
        break;
    case 'W':
        if (class_bid > 0 &&
        (HAS_PERM(PERM_SYSOP) || GROUPOP())) {
        setbpath(buf, bcache[class_bid - 1].brdname);
        mkdir(buf, 0755);   /* Ptt:開群組目錄 */
        b_note_edit_bname(class_bid);
        brdnum = -1;
        }
        break;

#ifdef DEBUG
    case 'w':
        brc_finalize();
        break;
#endif /* defined(DEBUG) */

    case KEY_RIGHT:
    case '\n':
    case '\r':
    case 'r':
        {
        ptr = &nbrd[num];
        if (yank_flag == 0) {
            if (get_fav_type(&nbrd[0]) == 0)
            break;
            else if (ptr->myattr & NBRD_LINE)
            break;
            else if (ptr->myattr & NBRD_FOLDER){
            int t = num;
            num = 0;
            fav_folder_in(ptr->bid);
            choose_board(0);
            fav_folder_out();
            num = t;
            brdnum = -1;
            head = 9999;
            break;
            }
        }
        else if (ptr->myattr & NBRD_SYMBOLIC) {
            replace_link_by_target(ptr);
        }

        if (!(B_BH(ptr)->brdattr & BRD_GROUPBOARD)) {   /* 非sub class */
            if (HasPerm(B_BH(ptr))) {
            brc_initial_board(B_BH(ptr)->brdname);

            if (newflag) {
                setbdir(buf, currboard);
                tmp = unread_position(buf, ptr);
                head = tmp - t_lines / 2;
                getkeep(buf, head > 1 ? head : 1, tmp + 1);
            }
            board_visit_time = getbrdtime(ptr->bid);
            Read();
            check_newpost(ptr);
            head = -1;
            setutmpmode(newflag ? READNEW : READBRD);
            }
        } else {    /* sub class */
            move(12, 1);
            bidtmp = class_bid;
            currmodetmp = currmode;
            tmp1 = num;
            num = 0;
            if (!(B_BH(ptr)->brdattr & BRD_TOP))
            class_bid = ptr->bid;
            else
            class_bid = -1; /* 熱門群組用 */

            if (!GROUPOP()) /* 如果還沒有小組長權限 */
            set_menu_BM(B_BH(ptr)->BM);

            if (now < B_BH(ptr)->bupdate) {
            setbfile(buf, B_BH(ptr)->brdname, fn_notes);
            if (more(buf, NA) != -1)
                pressanykey();
            }
            tmp = currutmp->brc_id;
            setutmpbid(ptr->bid);
            free(nbrd);
            nbrd = NULL;
                if (yank_flag == 0 ) {
                yank_flag = 1;
            choose_board(0);
            yank_flag = 0;
                }
            else
            choose_board(0);
            currmode = currmodetmp; /* 離開板板後就把權限拿掉喔 */
            num = tmp1;
            class_bid = bidtmp;
            setutmpbid(tmp);
            brdnum = -1;
        }
        }
    }
    } while (ch != 'q');
    free(nbrd);
    nbrd = NULL;
    --choose_board_depth;
}

int
root_board()
{
    init_brdbuf();
    class_bid = 1;
    yank_flag = 1;
    choose_board(0);
    return 0;
}

int
Boards()
{
    init_brdbuf();
    class_bid = 0;
    yank_flag = 0;
    choose_board(0);
    return 0;
}


int
New()
{
    int             mode0 = currutmp->mode;
    int             stat0 = currstat;

    class_bid = 0;
    choose_board(1);
    currutmp->mode = mode0;
    currstat = stat0;
    return 0;
}