* refine cmbbs/cache.c: we don't need 'util_cache.o' anymore! simply common bbs library (libcmbbs.a).

git-svn-id: http://opensvn.csie.org/pttbbs/trunk/pttbbs@4569 63ad8ddf-47c3-0310-b6dd-a9e9d9715204

12 files changed, 169 insertions, 1301 deletions

diff --git a/common/bbs/cache.c b/common/bbs/cache.c
index e282b484..03da6932 100644
--- a/common/bbs/cache.c
+++ b/common/bbs/cache.c
@@ -1,12 +1,42 @@
 /* $Id$ */
-#include "bbs.h"
+#include <assert.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <ctype.h>
+#include <signal.h>
+#include <machine/param.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/ipc.h>
+#include <sys/shm.h>
+#include <unistd.h>
+#include <errno.h>
+#include <fcntl.h>
+#include "cmsys.h"
+#include "cmbbs.h"
+#include "common.h"
+#include "var.h"
+
+#include "modes.h" // for DEBUGSLEEPING
+
+// TODO some APIs currently in util_passwd.o and should be moved to
+// common/bbs/passwd.c...
+int passwd_query(int num, userec_t *buf);
+int passwd_update_money(int num);
+
+//////////////////////////////////////////////////////////////////////////
+// This is shared by utility library and core BBS,
+// so do not put code using currutmp/cuser here.
+//////////////////////////////////////////////////////////////////////////
+
+// these cannot be used!
+#define currutmp  YOU_FAILED
+#define usernum	  YOU_FAILED
+#define cuser     YOU_FAILED
+#define abort_bbs YOU_FAILED
+#define log_usies YOU_FAILED
 
-#if 0
-
-#ifdef _BBS_UTIL_C_
-#    define log_usies(a, b) ;
-#    define abort_bbs(a)    exit(1)
-#endif
 /*
  * the reason for "safe_sleep" is that we may call sleep during SIGALRM
  * handler routine, while SIGALRM is blocked. if we use the original sleep,
@@ -22,7 +52,7 @@ safe_sleep(unsigned int seconds)
     sigprocmask(SIG_BLOCK, &set, &oldset);
     if (sigismember(&oldset, SIGALRM)) {
 	unsigned int    retv;
-	log_usies("SAFE_SLEEP ", "avoid hang");
+	// log_usies("SAFE_SLEEP ", "avoid hang");
 	sigemptyset(&set);
 	sigaddset(&set, SIGALRM);
 	sigprocmask(SIG_UNBLOCK, &set, NULL);
@@ -95,6 +125,7 @@ attach_SHM(void)
 /*
  * section - user cache(including uhash)
  */
+
 /* uhash ****************************************** */
 /*
  * the design is this: we use another stand-alone program to create and load
@@ -118,8 +149,12 @@ add_to_uhash(int n, const char *id)
     for (times = 0; times < MAX_USERS && *p != -1; ++times)
 	p = &(SHM->next_in_hash[*p]);
 
-    if (times == MAX_USERS)
-	abort_bbs(0);
+    if (times >= MAX_USERS)
+    {
+	// abort_bbs(0);
+	fprintf(stderr, "add_to_uhash: exceed max users.\r\n");
+	exit(0);
+    }
 
     SHM->next_in_hash[*p = n] = -1;
 }
@@ -138,8 +173,12 @@ remove_from_uhash(int n)
     for (times = 0; times < MAX_USERS && (*p != -1 && *p != n); ++times)
 	p = &(SHM->next_in_hash[*p]);
 
-    if (times == MAX_USERS)
-	abort_bbs(0);
+    if (times >= MAX_USERS)
+    {
+	// abort_bbs(0);
+	fprintf(stderr, "remove_from_uhash: current SHM exceed max users.\r\n");
+	exit(0);
+    }
 
     if (*p == n)
 	*p = SHM->next_in_hash[n];
@@ -149,6 +188,7 @@ remove_from_uhash(int n)
 #warning "Suggest to use bigger HASH_BITS for better searchuser() performance,"
 #warning "searchuser() average chaining MAX_USERS/(1<<HASH_BITS) times."
 #endif
+
 int
 dosearchuser(const char *userid, char *rightid)
 {
@@ -176,6 +216,7 @@ searchuser(const char *userid, char *rightid)
     return dosearchuser(userid, rightid);
 }
 
+// XXX check this: can we have it here?
 int
 getuser(const char *userid, userec_t *xuser)
 {
@@ -210,41 +251,6 @@ setuserid(int num, const char *userid)
     }
 }
 
-void
-getnewutmpent(const userinfo_t * up)
-{
-/* Ptt:這裡加上 hash 觀念找空的 utmp */
-    register int    i;
-    register userinfo_t *uentp;
-    unsigned int p = StringHash(up->userid) % USHM_SIZE;
-    for (i = 0; i < USHM_SIZE; i++, p++) {
-	if (p == USHM_SIZE)
-	    p = 0;
-	uentp = &(SHM->uinfo[p]);
-	if (!(uentp->pid)) {
-	    memcpy(uentp, up, sizeof(userinfo_t));
-	    currutmp = uentp;
-	    return;
-	}
-    }
-    exit(1);
-}
-
-int
-apply_ulist(int (*fptr) (const userinfo_t *))
-{
-    register userinfo_t *uentp;
-    register int    i, state;
-
-    for (i = 0; i < USHM_SIZE; i++) {
-	uentp = &(SHM->uinfo[i]);
-	if (uentp->pid && (PERM_HIDE(currutmp) || !PERM_HIDE(uentp)))
-	    if ((state = (*fptr) (uentp)))
-		return state;
-    }
-    return 0;
-}
-
 userinfo_t     *
 search_ulist_pid(int pid)
 {
@@ -355,54 +361,6 @@ search_ulist_userid(const char *userid)
     return 0;
 }
 
-#ifndef _BBS_UTIL_C_
-int
-count_logins(int uid, int show)
-{
-    register int    i = 0, j, start = 0, end = SHM->UTMPnumber - 1, count;
-    int *ulist;
-    userinfo_t *u; 
-    if (end == -1)
-	return 0;
-    ulist = SHM->sorted[SHM->currsorted][7];
-    for (i = ((start + end) / 2);; i = (start + end) / 2) {
-	u = &SHM->uinfo[ulist[i]];
-	j = uid - u->uid;
-	if (!j) {
-	    for (; i > 0 && uid == SHM->uinfo[ulist[i - 1]].uid; i--);
-							/* 指到第一筆 */
-	    for (count = 0; (ulist[i + count] &&
-		    (u = &SHM->uinfo[ulist[i + count]]) &&
-		    uid == u->uid); count++) {
-		if (show)
-		    prints("(%d) 目前狀態為: %-17.16s(來自 %s)\n",
-			   count + 1, modestring(u, 0),
-			   u->from);
-	    }
-	    return count;
-	}
-	if (end == start) {
-	    break;
-	} else if (i == start) {
-	    i = end;
-	    start = end;
-	} else if (j > 0)
-	    start = i;
-	else
-	    end = i;
-    }
-    return 0;
-}
-
-void
-purge_utmp(userinfo_t * uentp)
-{
-    logout_friend_online(uentp);
-    memset(uentp, 0, sizeof(userinfo_t));
-    SHM->UTMPneedsort = 1;
-}
-#endif
-
 /*
  * section - money cache
  */
@@ -418,11 +376,7 @@ int
 deumoney(int uid, int money)
 {
     if (uid <= 0 || uid > MAX_USERS){
-#if defined(_BBS_UTIL_C_)
-	printf("internal error: deumoney(%d, %d)\n", uid, money);
-#else
-	vmsg("internal error");
-#endif
+	fprintf(stderr, "internal error: deumoney(%d, %d)\r\n", uid, money);
 	return -1;
     }
 
@@ -433,30 +387,6 @@ deumoney(int uid, int money)
 }
 
 /*
- * section - utmp
- */
-#if !defined(_BBS_UTIL_C_) /* _BBS_UTIL_C_ 不會有 utmp */
-void
-setutmpmode(unsigned int mode)
-{
-    if (currstat != mode)
-	currutmp->mode = currstat = mode;
-    /* 追蹤使用者 */
-    if (HasUserPerm(PERM_LOGUSER)) {
-	log_user("setutmpmode to %s(%d)\n", modestring(currutmp, 0), mode);
-    }
-}
-
-unsigned int 
-getutmpmode(void)
-{
-    if (currutmp)
-	return currutmp->mode;
-    return currstat;
-}
-#endif
-
-/*
  * section - board cache
  */
 void touchbtotal(int bid) {
@@ -465,7 +395,6 @@ void touchbtotal(int bid) {
     SHM->lastposttime[bid - 1] = 0;
 }
 
-
 /**
  * qsort comparison function - 照板名排序
  */
@@ -514,15 +443,14 @@ sort_bcache(void)
     SHM->Bbusystate = 0;
 }
 
-#ifdef _BBS_UTIL_C_
 void
 reload_bcache(void)
 {
     int     i, fd;
     pid_t   pid;
     for( i = 0 ; i < 10 && SHM->Bbusystate ; ++i ){
-	printf("SHM->Bbusystate is currently locked (value: %d). "
-	       "please wait... ", SHM->Bbusystate);
+	fprintf(stderr, "SHM->Bbusystate is currently locked (value: %d). "
+	       "please wait... \r\n", SHM->Bbusystate);
 	sleep(1);
     }
 
@@ -538,11 +466,12 @@ reload_bcache(void)
 
     /* 等所有 boards 資料更新後再設定 uptime */
     SHM->Buptime = SHM->Btouchtime;
-    log_usies("CACHE", "reload bcache");
+    // log_usies("CACHE", "reload bcache");
+    fprintf(stderr, "cache: reload bcache\r\n");
     SHM->Bbusystate = 0;
     sort_bcache();
 
-    printf("load bottom in background");
+    fprintf(stderr, "load bottom in background\r\n");
     if( (pid = fork()) > 0 )
 	return;
     setproctitle("loading bottom");
@@ -558,7 +487,7 @@ reload_bcache(void)
 		n = 5;
 	    SHM->n_bottom[i] = n;
 	}
-    printf("load bottom done");
+    fprintf(stderr, "load bottom done\r\n");
     if( pid == 0 )
 	exit(0);
     // if pid == -1 should be returned
@@ -571,17 +500,6 @@ void resolve_boards(void)
     }
     numboards = SHM->Bnumber;
 }
-#endif /* defined(_BBS_UTIL_C_)*/
-
-#if 0
-/* Unused */
-void touch_boards(void)
-{
-    SHM->Btouchtime = COMMON_TIME;
-    numboards = -1;
-    resolve_boards();
-}
-#endif
 
 void addbrd_touchcache(void)
 {
@@ -618,22 +536,6 @@ reset_board(int bid) /* XXXbid: from 1 */
     }
 }
 
-#ifndef _BBS_UTIL_C_ /* because of HasBoardPerm() in board.c */
-int
-apply_boards(int (*func) (boardheader_t *))
-{
-    register int    i;
-    register boardheader_t *bhdr;
-
-    for (i = 0, bhdr = bcache; i < numboards; i++, bhdr++) {
-	if (!(bhdr->brdattr & BRD_GROUPBOARD) && HasBoardPerm(bhdr) &&
-	    (*func) (bhdr) == QUIT)
-	    return QUIT;
-    }
-    return 0;
-}
-#endif
-
 void
 setbottomtotal(int bid)
 {
@@ -656,6 +558,7 @@ setbottomtotal(int bid)
     else
         SHM->n_bottom[bid-1]=n;
 }
+
 void
 setbtotal(int bid)
 {
@@ -715,64 +618,6 @@ getbnum(const char *bname)
     return 0;
 }
 
-const char *
-postperm_msg(const char *bname)
-{
-    register int    i;
-    char            buf[PATHLEN];
-    boardheader_t   *bp = NULL;
-
-    if (!(i = getbnum(bname)))
-	return "看板不存在";
-
-    if (HasUserPerm(PERM_SYSOP))
-	return NULL;
-
-    setbfile(buf, bname, fn_water);
-    if (file_exist_record(buf, cuser.userid))
-	return "使用者水桶中";
-
-    if (!strcasecmp(bname, DEFAULT_BOARD))
-	return NULL;
-
-    assert(0<=i-1 && i-1<MAX_BOARD);
-    bp = getbcache(i);
-
-    if (bp->brdattr & BRD_GUESTPOST)
-        return NULL;
-
-    if (!HasUserPerm(PERM_POST))
-	return "無發文權限";
-
-    /* 秘密看板特別處理 */
-    if (bp->brdattr & BRD_HIDE)
-	return NULL;
-    else if (bp->brdattr & BRD_RESTRICTEDPOST &&
-	    !is_hidden_board_friend(i, usernum))
-	return "看板限制發文";
-
-    if (HasUserPerm(PERM_VIOLATELAW))
-    {
-	// 在罰單的討論相關板可以發文
-	if (bp->level & PERM_VIOLATELAW)
-	    return NULL;
-	else 
-	    return "罰單未繳";
-    }
-
-    if (!(bp->level & ~PERM_POST))
-	return NULL;
-    if (!HasUserPerm(bp->level & ~PERM_POST))
-	return "未達看板要求權限";
-    return NULL;
-}
-
-int
-haspostperm(const char *bname)
-{
-    return postperm_msg(bname) == NULL ? 1 : 0;
-}
-
 void buildBMcache(int bid) /* bid starts from 1 */
 {
     char    s[IDLEN * 3 + 3], *ptr;
@@ -794,35 +639,10 @@ void buildBMcache(int bid) /* bid starts from 1 */
 	SHM->BMcache[bid-1][i] = -1;
 }
 
-int is_BM_cache(int bid) /* bid starts from 1 */
-{
-    assert(0<=bid-1 && bid-1<MAX_BOARD);
-    int *pbm = SHM->BMcache[bid-1];
-    // XXX potential issue: (thanks for mtdas@ptt)
-    //  buildBMcache use -1 as "none".
-    //  some function may call is_BM_cache early 
-    //  without having currutmp->uid (maybe?)
-    //  and may get BM permission accidentally.
-    // quick check
-    if (!HasUserPerm(PERM_BASIC) || !currutmp->uid || currutmp->uid == -1)
-	return 0;
-    // XXX hard coded MAX_BMs=4
-    if( currutmp->uid == pbm[0] ||
-	currutmp->uid == pbm[1] ||
-	currutmp->uid == pbm[2] ||
-	currutmp->uid == pbm[3] )
-    {
-	// auto enable BM permission
-	if (!HasUserPerm(PERM_BM))
-	    cuser.userlevel |= PERM_BM;
-	return 1;
-    }
-    return 0;
-}
-
-/*-------------------------------------------------------*/
-/* PTT  cache                                            */
-/*-------------------------------------------------------*/
+/*
+ * section - PTT cache (movie cache?)
+ * 動態看板與其它
+ */
 int 
 filter_aggressive(const char*s)
 {
@@ -941,10 +761,8 @@ reload_pttcache(void)
 			    memset(SHM->notes[id], 0, sizeof(SHM->notes[0]));
 			else
 			    id++;
-#ifdef _BBS_UTIL_C_
 			// Debug purpose
-			// printf("found aggressive: %s\n", buf);
-#endif
+			// fprintf(stderr, "found aggressive: %s\r\n", buf);
 		    } 
 		    else 
 		    {
@@ -969,10 +787,8 @@ reload_pttcache(void)
 	    else
 		set_aggressive_state(0);
 
-#ifdef _BBS_UTIL_C_
-	    printf("id(%d)/agg(%d)/raw(%d)\n",
-		    id, aggid, rawid);
-#endif
+	    // fprintf(stderr, "id(%d)/agg(%d)/raw(%d)\r\n",
+	    //	    id, aggid, rawid);
 	}
 	SHM->last_film = id - 1;
 
@@ -987,7 +803,8 @@ reload_pttcache(void)
 	/* 等所有資料更新後再設定 uptime */
 
 	SHM->Puptime = SHM->Ptouchtime;
-	log_usies("CACHE", "reload pttcache");
+	// log_usies("CACHE", "reload pttcache");
+	fprintf(stderr, "cache: reload pttcache\r\n");
 	SHM->Pbusystate = 0;
     }
 }
@@ -1007,17 +824,16 @@ resolve_garbage(void)
 	     * 又沒有人把他 解開  同樣的問題發生在reload passwd
 	     */
 	    SHM->Pbusystate = 0;
-#ifndef _BBS_UTIL_C_
-	    log_usies("CACHE", "refork Ptt dead lock");
-#endif
+	    // log_usies("CACHE", "refork Ptt dead lock");
+	    fprintf(stderr, "cache: refork Ptt dead lock\r\n");
 	}
     }
 }
 
-/*-------------------------------------------------------*/
-/* PTT's cache                                           */
-/*-------------------------------------------------------*/
-/* cache for from host 與最多上線人數 */
+/*
+ * section - from host (deprecated by fromd / logind?)
+ * cache for from host 與最多上線人數 
+ */
 void
 reload_fcache(void)
 {
@@ -1073,9 +889,8 @@ reload_fcache(void)
 
 	/* 等所有資料更新後再設定 uptime */
 	SHM->Fuptime = SHM->Ftouchtime;
-#if !defined(_BBS_UTIL_C_)
-	log_usies("CACHE", "reload fcache");
-#endif
+	// log_usies("CACHE", "reload fcache");
+	fprintf(stderr, "cache: reload from cache\r\n");
 	SHM->Fbusystate = 0;
     }
 }
@@ -1138,7 +953,11 @@ is_hidden_board_friend(int bid, int uid)
     return 0;
 }
 
+/*
+ * section - cooldown
+ */
 #ifdef USE_COOLDOWN
+
 void add_cooldowntime(int uid, int min)
 {
     // Ptt: I will use the number below 15 seconds.
@@ -1156,6 +975,5 @@ void add_posttimes(int uid, int times)
   else
        SHM->cooldowntime[uid - 1] |= 0xF;
 }
-#endif
 
 #endif
diff --git a/common/bbs/string.c b/common/bbs/string.c
index 22c93abb..5f8e1c9f 100644
--- a/common/bbs/string.c
+++ b/common/bbs/string.c
@@ -19,7 +19,6 @@ bool
 is_valid_brdname(const char *brdname)
 {
     int i;
-    char ch;
     int len;
 
     assert(brdname);
diff --git a/common/bbs/time.c b/common/bbs/time.c
index 6ea402b8..9d084fb6 100644
--- a/common/bbs/time.c
+++ b/common/bbs/time.c
@@ -1,5 +1,7 @@
-#include "bbs.h"
-#include "cmsys.h"
+#include "cmbbs.h"
+#include "var.h"
+
+void syncnow(void);
 
 // Now() is a maple3 flavor API.
 const char *
diff --git a/daemon/bpop3d/Makefile b/daemon/bpop3d/Makefile
index 5024827f..69621d70 100644
--- a/daemon/bpop3d/Makefile
+++ b/daemon/bpop3d/Makefile
@@ -4,7 +4,7 @@ SRCROOT=	../..
 
 PROGRAMS=	bpop3d
 UTILDIR=	$(SRCROOT)/util
-UTILOBJ=	$(UTILDIR)/util_var.o $(UTILDIR)/util_cache.o $(UTILDIR)/util_passwd.o
+UTILOBJ=	$(UTILDIR)/util_var.o $(UTILDIR)/util_passwd.o
 
 LDLIBS+=$(SRCROOT)/common/bbs/libcmbbs.a \
 	$(SRCROOT)/common/sys/libcmsys.a \
diff --git a/daemon/logind/Makefile b/daemon/logind/Makefile
index c984239c..246b6c5e 100644
--- a/daemon/logind/Makefile
+++ b/daemon/logind/Makefile
@@ -4,7 +4,7 @@ SRCROOT=	../..
 
 PROGRAMS=	logind loginc
 UTILDIR=	$(SRCROOT)/util
-UTILOBJ=	$(UTILDIR)/util_var.o $(UTILDIR)/util_cache.o $(UTILDIR)/util_passwd.o
+UTILOBJ=	$(UTILDIR)/util_var.o $(UTILDIR)/util_passwd.o
 
 LDLIBS+=$(SRCROOT)/common/bbs/libcmbbs.a \
 	$(SRCROOT)/common/sys/libcmsys.a \
diff --git a/daemon/utmpd/Makefile b/daemon/utmpd/Makefile
index e03d8dae..97270836 100644
--- a/daemon/utmpd/Makefile
+++ b/daemon/utmpd/Makefile
@@ -5,7 +5,7 @@ SRCROOT=	../..
 
 PROGRAMS=	utmpserver utmpsync utmpserver2 utmpserver3 authserver
 UTILDIR=	$(SRCROOT)/util
-UTILOBJ=	$(UTILDIR)/util_var.o $(UTILDIR)/util_cache.o $(UTILDIR)/util_passwd.o
+UTILOBJ=	$(UTILDIR)/util_var.o $(UTILDIR)/util_passwd.o
 
 LDLIBS+=$(SRCROOT)/common/bbs/libcmbbs.a \
 	$(SRCROOT)/common/sys/libcmsys.a \
diff --git a/include/cmbbs.h b/include/cmbbs.h
index 1ae86161..48d36ed3 100644
--- a/include/cmbbs.h
+++ b/include/cmbbs.h
@@ -37,4 +37,48 @@ extern int stampfile(char *fpath, fileheader_t * fh);
 extern int stampdir(char *fpath, fileheader_t * fh);
 extern int stamplink(char *fpath, fileheader_t * fh);
 
+/* cache.c */
+#define search_ulist(uid) search_ulistn(uid, 1)
+#define getbcache(bid) (bcache + bid - 1)
+#define moneyof(uid) SHM->money[uid - 1]
+#define getbtotal(bid) SHM->total[bid - 1]
+#define getbottomtotal(bid) SHM->n_bottom[bid-1]
+extern unsigned int safe_sleep(unsigned int seconds);
+extern void *attach_shm(int shmkey, int shmsize);
+extern void attach_SHM(void);
+extern void add_to_uhash(int n, const char *id);
+extern void remove_from_uhash(int n);
+extern int  dosearchuser(const char *userid, char *rightid);
+extern int  searchuser(const char *userid, char *rightid);
+extern void setuserid(int num, const char *userid);
+extern int  getuser(const char *userid, userec_t *xuser);
+extern userinfo_t *search_ulistn(int uid, int unum);
+extern userinfo_t *search_ulist_pid(int pid);
+extern userinfo_t *search_ulist_userid(const char *userid);
+extern int  setumoney(int uid, int money);
+extern int  deumoney(int uid, int money);
+extern void touchbtotal(int bid);
+extern void sort_bcache(void);
+extern void reload_bcache(void);
+extern void resolve_boards(void);
+extern void addbrd_touchcache(void);
+extern void reset_board(int bid);
+extern void setbottomtotal(int bid);
+extern void setbtotal(int bid);
+extern void touchbpostnum(int bid, int delta);
+extern int  getbnum(const char *bname);
+extern void buildBMcache(int);
+extern void reload_fcache(void);
+extern void reload_pttcache(void);
+extern void resolve_garbage(void);
+extern void resolve_fcache(void);
+extern void hbflreload(int bid);
+extern int is_hidden_board_friend(int bid, int uid);
+#ifdef USE_COOLDOWN
+# define cooldowntimeof(uid) (SHM->cooldowntime[uid - 1] & 0xFFFFFFF0)
+# define posttimesof(uid) (SHM->cooldowntime[uid - 1] & 0xF)
+extern void add_cooldowntime(int uid, int min);
+extern void add_posttimes(int uid, int times);
+# endif
+
 #endif
diff --git a/include/proto.h b/include/proto.h
index c30835a5..6716aa30 100644
--- a/include/proto.h
+++ b/include/proto.h
@@ -111,67 +111,24 @@ void brc_toggle_all_read(int bid, int is_all_read);
 
 /* cache */
 #define demoney(money) deumoney(usernum, money)
-#define search_ulist(uid) search_ulistn(uid, 1)
-#define getbcache(bid) (bcache + bid - 1)
-#define moneyof(uid) SHM->money[uid - 1]
-#define getbtotal(bid) SHM->total[bid - 1]
-#define getbottomtotal(bid) SHM->n_bottom[bid-1]
-void sort_bcache(void);
-int getuser(const char *userid, userec_t *xuser);
-void setuserid(int num, const char *userid);
-int dosearchuser(const char *userid, char *rightid);
-int searchuser(const char *userid, char *rightid);
-int getbnum(const char *bname);
-void touchbpostnum(int bid, int delta);
-void reset_board(int bid);
-void touch_boards(void);
-void addbrd_touchcache(void);
+unsigned int getutmpmode(void);
 void setutmpmode(unsigned int mode);
-unsigned int  getutmpmode(void);
-int apply_boards(int (*func)(boardheader_t *));
-int haspostperm(const char *bname);
-const char * postperm_msg(const char *bname);
-void setbtotal(int bid);
-void setbottomtotal(int bid);
-unsigned int safe_sleep(unsigned int seconds);
-int apply_ulist(int (*fptr)(const userinfo_t *));
-userinfo_t *search_ulistn(int uid, int unum);
 void purge_utmp(userinfo_t *uentp);
 void getnewutmpent(const userinfo_t *up);
-void resolve_garbage(void);
-void resolve_boards(void);
-void resolve_fcache(void);
-void sem_init(int semkey,int *semid);
-void sem_lock(int op,int semid);
+int apply_ulist(int (*fptr)(const userinfo_t *));
 char *getuserid(int num);
 int searchnewuser(int mode);
 int count_logins(int uid, int show);
-void remove_from_uhash(int n);
-void add_to_uhash(int n, const char *id);
-int setumoney(int uid, int money);
-userinfo_t *search_ulist_pid(int pid);
-userinfo_t *search_ulist_userid(const char *userid);
-void hbflreload(int bid);
-int is_hidden_board_friend(int bid, int uid);
-void *attach_shm(int shmkey, int shmsize);
-void attach_SHM(void);
 int is_BM_cache(int);
-void buildBMcache(int);
-void reload_bcache(void);
-void reload_fcache(void);
-#ifdef USE_COOLDOWN
-#define cooldowntimeof(uid) (SHM->cooldowntime[uid - 1] & 0xFFFFFFF0)
-#define posttimesof(uid) (SHM->cooldowntime[uid - 1] & 0xF)
-void add_cooldowntime(int uid, int min);
-void add_posttimes(int uid, int times);
-#endif
+int apply_boards(int (*func)(boardheader_t *));
+int haspostperm(const char *bname);
+const char * postperm_msg(const char *bname);
 
 /* cal */
 int give_tax(int money);
 const char* money_level(int money);
 int vice(int money, const char* item);
 #define reload_money()  cuser.money=moneyof(usernum)
-int deumoney(int uid, int money);
 int lockutmpmode(int unmode, int state);
 int unlockutmpmode(void);
 int x_file(void);
@@ -751,10 +708,4 @@ int pwcuBitUnsetLevel	(unsigned int mask);
 int calendar(void);
 int ParseDate(const char *date, int *year, int *month, int *day);
 
-/* util */
-void touchbtotal(int bid);
-
-/* util_cache.c */
-void reload_pttcache(void);
-
 #endif
diff --git a/innbbsd/Makefile b/innbbsd/Makefile
index e698e6f0..ff4497f5 100644
--- a/innbbsd/Makefile
+++ b/innbbsd/Makefile
@@ -29,8 +29,7 @@ all:	${PROGS}
 
 # bbs util
 UTIL_DIR=	$(SRCROOT)/util
-UTIL_OBJS=	\
-	util_cache.o	util_passwd.o	util_var.o
+UTIL_OBJS=	util_passwd.o	util_var.o
 
 .for fn in ${UTIL_OBJS}
 LINK_UTIL_OBJS+=	${UTIL_DIR}/${fn}
diff --git a/mbbsd/cache.c b/mbbsd/cache.c
index 38f4a0b0..ebbf164f 100644
--- a/mbbsd/cache.c
+++ b/mbbsd/cache.c
@@ -2,213 +2,14 @@
 #include "bbs.h"
 
 #ifdef _BBS_UTIL_C_
-#    define log_usies(a, b) ;
-#    define abort_bbs(a)    exit(1)
+#error sorry, mbbsd/cache.c does not support utility mode anymore. please use libcmbbs instead.
 #endif
-/*
- * the reason for "safe_sleep" is that we may call sleep during SIGALRM
- * handler routine, while SIGALRM is blocked. if we use the original sleep,
- * we'll never wake up.
- */
-unsigned int
-safe_sleep(unsigned int seconds)
-{
-    /* jochang  sleep有問題時用 */
-    sigset_t        set, oldset;
-
-    sigemptyset(&set);
-    sigprocmask(SIG_BLOCK, &set, &oldset);
-    if (sigismember(&oldset, SIGALRM)) {
-	unsigned int    retv;
-	log_usies("SAFE_SLEEP ", "avoid hang");
-	sigemptyset(&set);
-	sigaddset(&set, SIGALRM);
-	sigprocmask(SIG_UNBLOCK, &set, NULL);
-	retv = sleep(seconds);
-	sigprocmask(SIG_BLOCK, &set, NULL);
-	return retv;
-    }
-    return sleep(seconds);
-}
-
-/*
- * section - SHM
- */
-static void
-attach_err(int shmkey, const char *name)
-{
-    fprintf(stderr, "[%s error] key = %x\n", name, shmkey);
-    fprintf(stderr, "errno = %d: %s\n", errno, strerror(errno));
-    exit(1);
-}
-
-void           *
-attach_shm(int shmkey, int shmsize)
-{
-    void           *shmptr = (void *)NULL;
-    int             shmid;
-
-    shmid = shmget(shmkey, shmsize,
-#ifdef USE_HUGETLB
-	    SHM_HUGETLB |
-#endif
-	    0);
-    if (shmid < 0) {
-	// SHM should be created by uhash_loader, NOT mbbsd or other utils
-	attach_err(shmkey, "shmget");
-    } else {
-	shmptr = (void *)shmat(shmid, NULL, 0);
-	if (shmptr == (void *)-1)
-	    attach_err(shmkey, "shmat");
-    }
-
-    return shmptr;
-}
-
-void
-attach_SHM(void)
-{
-    SHM = attach_shm(SHM_KEY, SHMSIZE);
-    if(SHM->version != SHM_VERSION) {
-      fprintf(stderr, "Error: SHM->version(%d) != SHM_VERSION(%d)\n", SHM->version, SHM_VERSION);
-      fprintf(stderr, "Please use the source code version corresponding to SHM,\n"
-	 "or use ipcrm(1) command to clean share memory.\n");
-      exit(1);
-    }
-    if (!SHM->loaded)		/* (uhash) assume fresh shared memory is
-				 * zeroed */
-	exit(1);
-    if (SHM->Btouchtime == 0)
-	SHM->Btouchtime = 1;
-    bcache = SHM->bcache;
-    numboards = SHM->Bnumber;
-
-    if (SHM->Ptouchtime == 0)
-	SHM->Ptouchtime = 1;
-
-    if (SHM->Ftouchtime == 0)
-	SHM->Ftouchtime = 1;
-}
 
 /*
- * section - user cache(including uhash)
- */
-/* uhash ****************************************** */
-/*
- * the design is this: we use another stand-alone program to create and load
- * data into the hash. (that program could be run in rc-scripts or something
- * like that) after loading completes, the stand-alone program sets loaded to
- * 1 and exits.
- * 
- * the bbs exits if it can't attach to the shared memory or the hash is not
- * loaded yet.
+ * section - utmp cache
  */
 
 void
-add_to_uhash(int n, const char *id)
-{
-    int            *p, h = StringHash(id)%(1<<HASH_BITS);
-    int             times;
-    strlcpy(SHM->userid[n], id, sizeof(SHM->userid[n]));
-
-    p = &(SHM->hash_head[h]);
-
-    for (times = 0; times < MAX_USERS && *p != -1; ++times)
-	p = &(SHM->next_in_hash[*p]);
-
-    if (times == MAX_USERS)
-	abort_bbs(0);
-
-    SHM->next_in_hash[*p = n] = -1;
-}
-
-void
-remove_from_uhash(int n)
-{
-/*
- * note: after remove_from_uhash(), you should add_to_uhash() (likely with a
- * different name)
- */
-    int             h = StringHash(SHM->userid[n])%(1<<HASH_BITS);
-    int            *p = &(SHM->hash_head[h]);
-    int             times;
-
-    for (times = 0; times < MAX_USERS && (*p != -1 && *p != n); ++times)
-	p = &(SHM->next_in_hash[*p]);
-
-    if (times == MAX_USERS)
-	abort_bbs(0);
-
-    if (*p == n)
-	*p = SHM->next_in_hash[n];
-}
-
-#if (1<<HASH_BITS)*10 < MAX_USERS
-#warning "Suggest to use bigger HASH_BITS for better searchuser() performance,"
-#warning "searchuser() average chaining MAX_USERS/(1<<HASH_BITS) times."
-#endif
-int
-dosearchuser(const char *userid, char *rightid)
-{
-    int             h, p, times;
-    STATINC(STAT_SEARCHUSER);
-    h = StringHash(userid)%(1<<HASH_BITS);
-    p = SHM->hash_head[h];
-
-    for (times = 0; times < MAX_USERS && p != -1 && p < MAX_USERS ; ++times) {
-	if (strcasecmp(SHM->userid[p], userid) == 0) {
-	    if(userid[0] && rightid) strcpy(rightid, SHM->userid[p]);
-	    return p + 1;
-	}
-	p = SHM->next_in_hash[p];
-    }
-
-    return 0;
-}
-
-int
-searchuser(const char *userid, char *rightid)
-{
-    if(userid[0]=='\0')
-	return 0;
-    return dosearchuser(userid, rightid);
-}
-
-int
-getuser(const char *userid, userec_t *xuser)
-{
-    int             uid;
-
-    if ((uid = searchuser(userid, NULL))) {
-	passwd_query(uid, xuser);
-	xuser->money = moneyof(uid);
-    }
-    return uid;
-}
-
-char           *
-getuserid(int num)
-{
-    if (--num >= 0 && num < MAX_USERS)
-	return ((char *)SHM->userid[num]);
-    return NULL;
-}
-
-void
-setuserid(int num, const char *userid)
-{
-    if (num > 0 && num <= MAX_USERS) {
-/*  Ptt: it may cause problems
-	if (num > SHM->number)
-	    SHM->number = num;
-	else
-*/
-        remove_from_uhash(num - 1);
-	add_to_uhash(num - 1, userid);
-    }
-}
-
-void
 getnewutmpent(const userinfo_t * up)
 {
 /* Ptt:這裡加上 hash 觀念找空的 utmp */
@@ -243,117 +44,6 @@ apply_ulist(int (*fptr) (const userinfo_t *))
     return 0;
 }
 
-userinfo_t     *
-search_ulist_pid(int pid)
-{
-    register int    i = 0, j, start = 0, end = SHM->UTMPnumber - 1;
-    int *ulist;
-    register userinfo_t *u;
-    if (end == -1)
-	return NULL;
-    ulist = SHM->sorted[SHM->currsorted][8];
-    for (i = ((start + end) / 2);; i = (start + end) / 2) {
-	u = &SHM->uinfo[ulist[i]];
-	j = pid - u->pid;
-	if (!j) {
-	    return u;
-	}
-	if (end == start) {
-	    break;
-	} else if (i == start) {
-	    i = end;
-	    start = end;
-	} else if (j > 0)
-	    start = i;
-	else
-	    end = i;
-    }
-    return 0;
-}
-
-userinfo_t     *
-search_ulistn(int uid, int unum)
-{
-    register int    i = 0, j, start = 0, end = SHM->UTMPnumber - 1;
-    int *ulist;
-    register userinfo_t *u;
-    if (end == -1)
-	return NULL;
-    ulist = SHM->sorted[SHM->currsorted][7];
-    for (i = ((start + end) / 2);; i = (start + end) / 2) {
-	u = &SHM->uinfo[ulist[i]];
-	j = uid - u->uid;
-	if (j == 0) {
-	    for (; i > 0 && uid == SHM->uinfo[ulist[i - 1]].uid; --i)
-		;/* 指到第一筆 */
-	    // piaip Tue Jan  8 09:28:03 CST 2008
-	    // many people bugged about that their utmp have invalid
-	    // entry on record.
-	    // we found them caused by crash process (DEBUGSLEEPING) which
-	    // may occupy utmp entries even after process was killed.
-	    // because the memory is invalid, it is not safe for those process
-	    // to wipe their utmp entry. it should be done by some external
-	    // daemon.
-	    // however, let's make a little workaround here...
-	    for (; unum > 0 && i >= 0 && ulist[i] >= 0 &&
-		    SHM->uinfo[ulist[i]].uid == uid; unum--, i++)
-	    {
-		if (SHM->uinfo[ulist[i]].mode == DEBUGSLEEPING)
-		    unum ++;
-	    }
-	    if (unum == 0 && i > 0 && ulist[i-1] >= 0 &&
-		    SHM->uinfo[ulist[i-1]].uid == uid)
-		return &SHM->uinfo[ulist[i-1]];
-	    /*
-	    if ( i + unum - 1 >= 0 &&
-		 (ulist[i + unum - 1] >= 0 &&
-		  uid == SHM->uinfo[ulist[i + unum - 1]].uid ) )
-		return &SHM->uinfo[ulist[i + unum - 1]];
-		*/
-	    break;		/* 超過範圍 */
-	}
-	if (end == start) {
-	    break;
-	} else if (i == start) {
-	    i = end;
-	    start = end;
-	} else if (j > 0)
-	    start = i;
-	else
-	    end = i;
-    }
-    return 0;
-}
-
-userinfo_t     *
-search_ulist_userid(const char *userid)
-{
-    register int    i = 0, j, start = 0, end = SHM->UTMPnumber - 1;
-    int *ulist;
-    register userinfo_t * u;
-    if (end == -1)
-	return NULL;
-    ulist = SHM->sorted[SHM->currsorted][0];
-    for (i = ((start + end) / 2);; i = (start + end) / 2) {
-	u = &SHM->uinfo[ulist[i]];
-	j = strcasecmp(userid, u->userid);
-	if (!j) {
-	    return u;
-	}
-	if (end == start) {
-	    break;
-	} else if (i == start) {
-	    i = end;
-	    start = end;
-	} else if (j > 0)
-	    start = i;
-	else
-	    end = i;
-    }
-    return 0;
-}
-
-#ifndef _BBS_UTIL_C_
 int
 count_logins(int uid, int show)
 {
@@ -399,41 +89,7 @@ purge_utmp(userinfo_t * uentp)
     memset(uentp, 0, sizeof(userinfo_t));
     SHM->UTMPneedsort = 1;
 }
-#endif
-
-/*
- * section - money cache
- */
-int
-setumoney(int uid, int money)
-{
-    SHM->money[uid - 1] = money;
-    passwd_update_money(uid);
-    return SHM->money[uid - 1];
-}
 
-int
-deumoney(int uid, int money)
-{
-    if (uid <= 0 || uid > MAX_USERS){
-#if defined(_BBS_UTIL_C_)
-	printf("internal error: deumoney(%d, %d)\n", uid, money);
-#else
-	vmsg("internal error");
-#endif
-	return -1;
-    }
-
-    if (money < 0 && moneyof(uid) < -money)
-	return setumoney(uid, 0);
-    else
-	return setumoney(uid, SHM->money[uid - 1] + money);
-}
-
-/*
- * section - utmp
- */
-#if !defined(_BBS_UTIL_C_) /* _BBS_UTIL_C_ 不會有 utmp */
 void
 setutmpmode(unsigned int mode)
 {
@@ -452,171 +108,12 @@ getutmpmode(void)
 	return currutmp->mode;
     return currstat;
 }
-#endif
 
 /*
- * section - board cache
+ * section - board
  */
-void touchbtotal(int bid) {
-    assert(0<=bid-1 && bid-1<MAX_BOARD);
-    SHM->total[bid - 1] = 0;
-    SHM->lastposttime[bid - 1] = 0;
-}
-
 
-/**
- * qsort comparison function - 照板名排序
- */
-static int
-cmpboardname(const void * i, const void * j)
-{
-    return strcasecmp(bcache[*(int*)i].brdname, bcache[*(int*)j].brdname);
-}
-
-/**
- * qsort comparison function - 先照群組排序、同一個群組內依板名排
- */
-static int
-cmpboardclass(const void * i, const void * j)
-{
-    boardheader_t *brd1 = &bcache[*(int*)i], *brd2 = &bcache[*(int*)j];
-    int cmp;
-
-    cmp=strncmp(brd1->title, brd2->title, 4);
-    if(cmp!=0) return cmp;
-    return strcasecmp(brd1->brdname, brd2->brdname);
-}
-
-
-void
-sort_bcache(void)
-{
-    int             i;
-    /* critical section 盡量不要呼叫  */
-    /* 只有新增 或移除看板 需要呼叫到 */
-    if(SHM->Bbusystate) {
-	sleep(1);
-	return;
-    }
-    SHM->Bbusystate = 1;
-    for (i = 0; i < SHM->Bnumber; i++) {
-	SHM->bsorted[0][i] = SHM->bsorted[1][i] = i;
-    }
-    qsort(SHM->bsorted[0], SHM->Bnumber, sizeof(int), cmpboardname);
-    qsort(SHM->bsorted[1], SHM->Bnumber, sizeof(int), cmpboardclass);
-
-    for (i = 0; i < SHM->Bnumber; i++) {
-	bcache[i].firstchild[0] = 0;
-	bcache[i].firstchild[1] = 0;
-    }
-    SHM->Bbusystate = 0;
-}
-
-#ifdef _BBS_UTIL_C_
-void
-reload_bcache(void)
-{
-    int     i, fd;
-    pid_t   pid;
-    for( i = 0 ; i < 10 && SHM->Bbusystate ; ++i ){
-	printf("SHM->Bbusystate is currently locked (value: %d). "
-	       "please wait... ", SHM->Bbusystate);
-	sleep(1);
-    }
-
-    SHM->Bbusystate = 1;
-    if ((fd = open(fn_board, O_RDONLY)) > 0) {
-	SHM->Bnumber =
-	    read(fd, bcache, MAX_BOARD * sizeof(boardheader_t)) /
-	    sizeof(boardheader_t);
-	close(fd);
-    }
-    memset(SHM->lastposttime, 0, MAX_BOARD * sizeof(time4_t));
-    memset(SHM->total, 0, MAX_BOARD * sizeof(int));
-
-    /* 等所有 boards 資料更新後再設定 uptime */
-    SHM->Buptime = SHM->Btouchtime;
-    log_usies("CACHE", "reload bcache");
-    SHM->Bbusystate = 0;
-    sort_bcache();
-
-    printf("load bottom in background");
-    if( (pid = fork()) > 0 )
-	return;
-    setproctitle("loading bottom");
-    for( i = 0 ; i < MAX_BOARD ; ++i )
-	if( SHM->bcache[i].brdname[0] ){
-	    char    fn[128];
-	    int n;
-	    sprintf(fn, "boards/%c/%s/" FN_DIR ".bottom", 
-		    SHM->bcache[i].brdname[0],
-		    SHM->bcache[i].brdname);
-	    n = get_num_records(fn, sizeof(fileheader_t));
-	    if( n > 5 )
-		n = 5;
-	    SHM->n_bottom[i] = n;
-	}
-    printf("load bottom done");
-    if( pid == 0 )
-	exit(0);
-    // if pid == -1 should be returned
-}
-
-void resolve_boards(void)
-{
-    while (SHM->Buptime < SHM->Btouchtime) {
-	reload_bcache();
-    }
-    numboards = SHM->Bnumber;
-}
-#endif /* defined(_BBS_UTIL_C_)*/
-
-#if 0
-/* Unused */
-void touch_boards(void)
-{
-    SHM->Btouchtime = COMMON_TIME;
-    numboards = -1;
-    resolve_boards();
-}
-#endif
-
-void addbrd_touchcache(void)
-{
-    SHM->Bnumber++;
-    numboards = SHM->Bnumber;
-    reset_board(numboards);
-    sort_bcache();
-}
-
-void
-reset_board(int bid) /* XXXbid: from 1 */
-{				/* Ptt: 這樣就不用老是touch board了 */
-    int             fd;
-    boardheader_t  *bhdr;
-
-    if (--bid < 0)
-	return;
-    assert(0<=bid && bid<MAX_BOARD);
-    if (SHM->Bbusystate || COMMON_TIME - SHM->busystate_b[bid] < 10) {
-	safe_sleep(1);
-    } else {
-	SHM->busystate_b[bid] = COMMON_TIME;
-
-	bhdr = bcache;
-	bhdr += bid;
-	if ((fd = open(fn_board, O_RDONLY)) > 0) {
-	    lseek(fd, (off_t) (bid * sizeof(boardheader_t)), SEEK_SET);
-	    read(fd, bhdr, sizeof(boardheader_t));
-	    close(fd);
-	}
-	SHM->busystate_b[bid] = 0;
-
-	buildBMcache(bid + 1); /* XXXbid */
-    }
-}
-
-#ifndef _BBS_UTIL_C_ /* because of HasBoardPerm() in board.c */
+/* HasBoardPerm() in board.c... */
 int
 apply_boards(int (*func) (boardheader_t *))
 {
@@ -630,89 +127,34 @@ apply_boards(int (*func) (boardheader_t *))
     }
     return 0;
 }
-#endif
-
-void
-setbottomtotal(int bid)
-{
-    boardheader_t  *bh = getbcache(bid);
-    char            fname[PATHLEN];
-    int             n;
-
-    assert(0<=bid-1 && bid-1<MAX_BOARD);
-    if(!bh->brdname[0]) return;
-    setbfile(fname, bh->brdname, FN_DIR ".bottom");
-    n = get_num_records(fname, sizeof(fileheader_t));
-    if(n>5)
-      {
-#ifdef DEBUG_BOTTOM
-        log_file("fix_bottom", LOG_CREAT | LOG_VF, "%s n:%d\n", fname, n);
-#endif
-        unlink(fname);
-        SHM->n_bottom[bid-1]=0;
-      }
-    else
-        SHM->n_bottom[bid-1]=n;
-}
-void
-setbtotal(int bid)
-{
-    boardheader_t  *bh = getbcache(bid);
-    struct stat     st;
-    char            genbuf[PATHLEN];
-    int             num, fd;
-
-    assert(0<=bid-1 && bid-1<MAX_BOARD);
-    setbfile(genbuf, bh->brdname, FN_DIR);
-    if ((fd = open(genbuf, O_RDWR)) < 0)
-	return;			/* .DIR掛了 */
-    fstat(fd, &st);
-    num = st.st_size / sizeof(fileheader_t);
-    assert(0<=bid-1 && bid-1<MAX_BOARD);
-    SHM->total[bid - 1] = num;
 
-    if (num > 0) {
-	lseek(fd, (off_t) (num - 1) * sizeof(fileheader_t), SEEK_SET);
-	if (read(fd, genbuf, FNLEN) >= 0) {
-	    SHM->lastposttime[bid - 1] = (time4_t) atoi(&genbuf[2]);
-	}
-    } else
-	SHM->lastposttime[bid - 1] = 0;
-    close(fd);
-}
-
-void
-touchbpostnum(int bid, int delta)
+int is_BM_cache(int bid) /* bid starts from 1 */
 {
-    int            *total = &SHM->total[bid - 1];
     assert(0<=bid-1 && bid-1<MAX_BOARD);
-    if (*total)
-	*total += delta;
-}
-
-int
-getbnum(const char *bname)
-{
-    register int    i = 0, j, start = 0, end = SHM->Bnumber - 1;
-    int *blist = SHM->bsorted[0];
-    if(SHM->Bbusystate)
-	sleep(1);
-    for (i = ((start + end) / 2);; i = (start + end) / 2) {
-	if (!(j = strcasecmp(bname, bcache[blist[i]].brdname)))
-	    return (int)(blist[i] + 1);
-	if (end == start) {
-	    break;
-	} else if (i == start) {
-	    i = end;
-	    start = end;
-	} else if (j > 0)
-	    start = i;
-	else
-	    end = i;
+    int *pbm = SHM->BMcache[bid-1];
+    // XXX potential issue: (thanks for mtdas@ptt)
+    //  buildBMcache use -1 as "none".
+    //  some function may call is_BM_cache early 
+    //  without having currutmp->uid (maybe?)
+    //  and may get BM permission accidentally.
+    // quick check
+    if (!HasUserPerm(PERM_BASIC) || !currutmp->uid || currutmp->uid == -1)
+	return 0;
+    // XXX hard coded MAX_BMs=4
+    if( currutmp->uid == pbm[0] ||
+	currutmp->uid == pbm[1] ||
+	currutmp->uid == pbm[2] ||
+	currutmp->uid == pbm[3] )
+    {
+	// auto enable BM permission
+	if (!HasUserPerm(PERM_BM))
+	    cuser.userlevel |= PERM_BM;
+	return 1;
     }
     return 0;
 }
 
+// TODO move this to board.c
 const char *
 postperm_msg(const char *bname)
 {
@@ -765,393 +207,10 @@ postperm_msg(const char *bname)
     return NULL;
 }
 
+// TODO move this to board.c
 int
 haspostperm(const char *bname)
 {
     return postperm_msg(bname) == NULL ? 1 : 0;
 }
 
-void buildBMcache(int bid) /* bid starts from 1 */
-{
-    char    s[IDLEN * 3 + 3], *ptr;
-    int     i, uid;
-    char   *strtok_pos;
-
-    assert(0<=bid-1 && bid-1<MAX_BOARD);
-    strlcpy(s, getbcache(bid)->BM, sizeof(s));
-    for( i = 0 ; s[i] != 0 ; ++i )
-	if( !isalpha((int)s[i]) && !isdigit((int)s[i]) )
-            s[i] = ' ';
-
-    for( ptr = strtok_r(s, " ", &strtok_pos), i = 0 ;
-	 i < MAX_BMs && ptr != NULL  ;
-	 ptr = strtok_r(NULL, " ", &strtok_pos), ++i  )
-	if( (uid = searchuser(ptr, NULL)) != 0 )
-	    SHM->BMcache[bid-1][i] = uid;
-    for( ; i < MAX_BMs ; ++i )
-	SHM->BMcache[bid-1][i] = -1;
-}
-
-int is_BM_cache(int bid) /* bid starts from 1 */
-{
-    assert(0<=bid-1 && bid-1<MAX_BOARD);
-    int *pbm = SHM->BMcache[bid-1];
-    // XXX potential issue: (thanks for mtdas@ptt)
-    //  buildBMcache use -1 as "none".
-    //  some function may call is_BM_cache early 
-    //  without having currutmp->uid (maybe?)
-    //  and may get BM permission accidentally.
-    // quick check
-    if (!HasUserPerm(PERM_BASIC) || !currutmp->uid || currutmp->uid == -1)
-	return 0;
-    // XXX hard coded MAX_BMs=4
-    if( currutmp->uid == pbm[0] ||
-	currutmp->uid == pbm[1] ||
-	currutmp->uid == pbm[2] ||
-	currutmp->uid == pbm[3] )
-    {
-	// auto enable BM permission
-	if (!HasUserPerm(PERM_BM))
-	    cuser.userlevel |= PERM_BM;
-	return 1;
-    }
-    return 0;
-}
-
-/*-------------------------------------------------------*/
-/* PTT  cache                                            */
-/*-------------------------------------------------------*/
-int 
-filter_aggressive(const char*s)
-{
-    if (
-	/*
-	strstr(s, "此處放較不適當的爭議性字句") != NULL ||
-	*/
-	0
-	)
-	return 1;
-    return 0;
-}
-
-int 
-filter_dirtywords(const char*s)
-{
-    if (
-	strstr(s, "幹你娘") != NULL ||
-	0)
-	return 1;
-    return 0;
-}
-
-#define AGGRESSIVE_FN ".aggressive"
-static char drop_aggressive = 0;
-
-void 
-load_aggressive_state()
-{
-    if (dashf(AGGRESSIVE_FN))
-	drop_aggressive = 1;
-    else
-	drop_aggressive = 0;
-}
-
-void 
-set_aggressive_state(int s)
-{
-    FILE *fp = NULL;
-    if (s)
-    {
-	fp = fopen(AGGRESSIVE_FN, "wb");
-	fclose(fp);
-    } else {
-	remove(AGGRESSIVE_FN);
-    }
-}
-
-/* cache for 動態看板 */
-void
-reload_pttcache(void)
-{
-    if (SHM->Pbusystate)
-	safe_sleep(1);
-    else {			/* jochang: temporary workaround */
-	fileheader_t    item, subitem;
-	char            pbuf[256], buf[256], *chr;
-	FILE           *fp, *fp1, *fp2;
-	int             id, aggid, rawid;
-
-	SHM->Pbusystate = 1;
-	SHM->last_film = 0;
-	bzero(SHM->notes, sizeof(SHM->notes));
-	setapath(pbuf, BN_NOTE);
-	setadir(buf, pbuf);
-
-	load_aggressive_state();
-	id = aggid = rawid = 0; // effective count, aggressive count, total (raw) count
-
-	if ((fp = fopen(buf, "r"))) {
-	    // .DIR loop
-	    while (fread(&item, sizeof(item), 1, fp)) {
-
-		int chkagg = 0; // should we check aggressive?
-
-		if (item.title[3] != '<' || item.title[8] != '>')
-		    continue;
-
-#ifdef BN_NOTE_AGGCHKDIR
-		// TODO aggressive: only count '<點歌>' section
-		if (strcmp(item.title+3, BN_NOTE_AGGCHKDIR) == 0)
-		    chkagg = 1;
-#endif
-
-		snprintf(buf, sizeof(buf), "%s/%s/" FN_DIR,
-			pbuf, item.filename);
-
-		if (!(fp1 = fopen(buf, "r")))
-		    continue;
-
-		// file loop
-		while (fread(&subitem, sizeof(subitem), 1, fp1)) {
-
-		    snprintf(buf, sizeof(buf),
-			    "%s/%s/%s", pbuf, item.filename,
-			    subitem.filename);
-
-		    if (!(fp2 = fopen(buf, "r")))
-			continue;
-
-		    fread(SHM->notes[id], sizeof(char), sizeof(SHM->notes[0]), fp2);
-		    SHM->notes[id][sizeof(SHM->notes[0]) - 1] = 0;
-		    rawid ++;
-
-		    // filtering
-		    if (filter_dirtywords(SHM->notes[id]))
-		    {
-			memset(SHM->notes[id], 0, sizeof(SHM->notes[0]));
-			rawid --;
-		    }
-		    else if (chkagg && filter_aggressive(SHM->notes[id]))
-		    {
-			aggid++;
-			// handle aggressive notes by last detemined state
-			if (drop_aggressive)
-			    memset(SHM->notes[id], 0, sizeof(SHM->notes[0]));
-			else
-			    id++;
-#ifdef _BBS_UTIL_C_
-			// Debug purpose
-			// printf("found aggressive: %s\n", buf);
-#endif
-		    } 
-		    else 
-		    {
-			id++;
-		    }
-
-		    fclose(fp2);
-		    if (id >= MAX_MOVIE)
-			break;
-
-		} // end of file loop
-		fclose(fp1);
-
-		if (id >= MAX_MOVIE)
-		    break;
-	    } // end of .DIR loop
-	    fclose(fp);
-
-	    // decide next aggressive state
-	    if (rawid && aggid*3 >= rawid) // if aggressive exceed 1/3
-		set_aggressive_state(1);
-	    else
-		set_aggressive_state(0);
-
-#ifdef _BBS_UTIL_C_
-	    printf("id(%d)/agg(%d)/raw(%d)\n",
-		    id, aggid, rawid);
-#endif
-	}
-	SHM->last_film = id - 1;
-
-	fp = fopen("etc/today_is", "r");
-	if (fp) {
-	    fgets(SHM->today_is, 15, fp);
-	    if ((chr = strchr(SHM->today_is, '\n')))
-		*chr = 0;
-	    SHM->today_is[15] = 0;
-	    fclose(fp);
-	}
-	/* 等所有資料更新後再設定 uptime */
-
-	SHM->Puptime = SHM->Ptouchtime;
-	log_usies("CACHE", "reload pttcache");
-	SHM->Pbusystate = 0;
-    }
-}
-
-void
-resolve_garbage(void)
-{
-    int             count = 0;
-
-    while (SHM->Puptime < SHM->Ptouchtime) {	/* 不用while等 */
-	reload_pttcache();
-	if (count++ > 10 && SHM->Pbusystate) {
-	    /*
-	     * Ptt: 這邊會有問題  load超過10 秒會所有進loop的process tate = 0
-	     * 這樣會所有prcosee都會在load 動態看板 會造成load大增
-	     * 但沒有用這個function的話 萬一load passwd檔的process死了
-	     * 又沒有人把他 解開  同樣的問題發生在reload passwd
-	     */
-	    SHM->Pbusystate = 0;
-#ifndef _BBS_UTIL_C_
-	    log_usies("CACHE", "refork Ptt dead lock");
-#endif
-	}
-    }
-}
-
-/*-------------------------------------------------------*/
-/* PTT's cache                                           */
-/*-------------------------------------------------------*/
-/* cache for from host 與最多上線人數 */
-void
-reload_fcache(void)
-{
-    if (SHM->Fbusystate)
-	safe_sleep(1);
-    else {
-	FILE           *fp;
-
-	SHM->Fbusystate = 1;
-	bzero(SHM->home_ip, sizeof(SHM->home_ip));
-	if ((fp = fopen("etc/domain_name_query.cidr", "r"))) {
-	    char            buf[256], *ip, *mask;
-	    char *strtok_pos;
-
-	    SHM->home_num = 0;
-	    while (fgets(buf, sizeof(buf), fp)) {
-		if (!buf[0] || buf[0] == '#' || buf[0] == ' ' || buf[0] == '\n')
-		    continue;
-
-		if (buf[0] == '@') {
-		    SHM->home_ip[0] = 0;
-		    SHM->home_mask[0] = 0xFFFFFFFF;
-		    SHM->home_num++;
-		    continue;
-		}
-
-		ip = strtok_r(buf, " \t", &strtok_pos);
-		if ((mask = strchr(ip, '/')) != NULL) {
-		    int shift = 32 - atoi(mask + 1);
-		    SHM->home_ip[SHM->home_num] = ipstr2int(ip);
-		    SHM->home_mask[SHM->home_num] = (0xFFFFFFFF >> shift ) << shift;
-		}
-		else {
-		    SHM->home_ip[SHM->home_num] = ipstr2int(ip);
-		    SHM->home_mask[SHM->home_num] = 0xFFFFFFFF;
-		}
-		ip = strtok_r(NULL, " \t", &strtok_pos);
-		if (ip == NULL) {
-		    strcpy(SHM->home_desc[SHM->home_num], "雲深不知處");
-		}
-		else {
-		    strlcpy(SHM->home_desc[SHM->home_num], ip,
-			    sizeof(SHM->home_desc[SHM->home_num]));
-		    chomp(SHM->home_desc[SHM->home_num]);
-		}
-		(SHM->home_num)++;
-		if (SHM->home_num == MAX_FROM)
-		    break;
-	    }
-	    fclose(fp);
-	}
-	SHM->max_user = 0;
-
-	/* 等所有資料更新後再設定 uptime */
-	SHM->Fuptime = SHM->Ftouchtime;
-#if !defined(_BBS_UTIL_C_)
-	log_usies("CACHE", "reload fcache");
-#endif
-	SHM->Fbusystate = 0;
-    }
-}
-
-void
-resolve_fcache(void)
-{
-    while (SHM->Fuptime < SHM->Ftouchtime)
-	reload_fcache();
-}
-
-/*
- * section - hbfl (hidden board friend list)
- */
-void
-hbflreload(int bid)
-{
-    int             hbfl[MAX_FRIEND + 1], i, num, uid;
-    char            buf[128];
-    FILE           *fp;
-
-    assert(0<=bid-1 && bid-1<MAX_BOARD);
-    memset(hbfl, 0, sizeof(hbfl));
-    setbfile(buf, bcache[bid - 1].brdname, fn_visable);
-    if ((fp = fopen(buf, "r")) != NULL) {
-	for (num = 1; num <= MAX_FRIEND; ++num) {
-	    if (fgets(buf, sizeof(buf), fp) == NULL)
-		break;
-	    for (i = 0; buf[i] != 0; ++i)
-		if (buf[i] == ' ') {
-		    buf[i] = 0;
-		    break;
-		}
-	    if (strcasecmp(STR_GUEST, buf) == 0 ||
-		(uid = searchuser(buf, NULL)) == 0) {
-		--num;
-		continue;
-	    }
-	    hbfl[num] = uid;
-	}
-	fclose(fp);
-    }
-    hbfl[0] = COMMON_TIME;
-    memcpy(SHM->hbfl[bid-1], hbfl, sizeof(hbfl));
-}
-
-/* 是否通過板友測試. 如果在板友名單中的話傳回 1, 否則為 0 */
-int
-is_hidden_board_friend(int bid, int uid)
-{
-    int             i;
-
-    assert(0<=bid-1 && bid-1<MAX_BOARD);
-    if (SHM->hbfl[bid-1][0] < login_start_time - HBFLexpire)
-	hbflreload(bid);
-    for (i = 1; SHM->hbfl[bid-1][i] != 0 && i <= MAX_FRIEND; ++i) {
-	if (SHM->hbfl[bid-1][i] == uid)
-	    return 1;
-    }
-    return 0;
-}
-
-#ifdef USE_COOLDOWN
-void add_cooldowntime(int uid, int min)
-{
-    // Ptt: I will use the number below 15 seconds.
-    time4_t base= now > SHM->cooldowntime[uid - 1]? 
-                    now : SHM->cooldowntime[uid - 1];
-    base += min*60;
-    base &= 0xFFFFFFF0;
-
-    SHM->cooldowntime[uid - 1] = base;
-}
-void add_posttimes(int uid, int times)
-{
-  if((SHM->cooldowntime[uid - 1] & 0xF) + times <0xF)
-       SHM->cooldowntime[uid - 1] += times;
-  else
-       SHM->cooldowntime[uid - 1] |= 0xF;
-}
-#endif
diff --git a/trans/Makefile b/trans/Makefile
index 17f90bcd..a9622cbd 100644
--- a/trans/Makefile
+++ b/trans/Makefile
@@ -7,11 +7,9 @@ CFLAGS+= -DPTTBBS_UTIL
 
 BBSBASE=	$(SRCROOT)/include/var.h
 
-UTIL_OBJS=	\
-	util_cache.o	util_passwd.o	util_var.o
+UTIL_OBJS=	util_passwd.o	util_var.o
 
-MBBSD_OBJS= \
-	cache		record		passwd		var
+MBBSD_OBJS= 	record		passwd		var
 
 # 下面這些程式, 會被 compile 並且和 $(UTIL_OBJS) 聯結
 CPROG_WITH_UTIL= \
diff --git a/util/Makefile b/util/Makefile
index 82a26302..0bbfc0bd 100644
--- a/util/Makefile
+++ b/util/Makefile
@@ -7,11 +7,9 @@ CFLAGS+= -DPTTBBS_UTIL
 
 BBSBASE=	$(SRCROOT)/include/var.h
 
-UTIL_OBJS=	\
-	util_cache.o	util_passwd.o	util_var.o
+UTIL_OBJS= 	util_passwd.o	util_var.o
 
-MBBSD_OBJS= \
-	cache		record		passwd		var
+MBBSD_OBJS= 	record		passwd		var
 
 # 下面這些程式, 會被 compile 並且和 $(UTIL_OBJS) 聯結
 CPROG_WITH_UTIL= \