Initial revision

git-svn-id: http://opensvn.csie.org/pttbbs/pttbbs/trunk/pttbbs@1 63ad8ddf-47c3-0310-b6dd-a9e9d9715204

1 files changed, 3504 insertions, 0 deletions

diff --git a/util/xchatd.c b/util/xchatd.c
new file mode 100644
index 00000000..46fba147
--- /dev/null
+++ b/util/xchatd.c
@@ -0,0 +1,3504 @@
+/* $Id: xchatd.c,v 1.1 2002/03/07 15:13:46 in2 Exp $ */
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <netdb.h>
+#include <fcntl.h>
+#include <signal.h>
+#include <errno.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <sys/ioctl.h>
+#include <sys/socket.h>
+#include <time.h>
+#include <sys/resource.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include "config.h"
+#include "pttstruct.h"
+#include "util.h"
+#include "perm.h"
+#include "common.h"
+#include "xchatd.h"
+
+#define SERVER_USAGE
+#define WATCH_DOG
+#undef  MONITOR                 /* 監督 chatroom 活動以解決糾紛 */
+#undef  DEBUG                   /* 程式除錯之用 */
+
+#ifdef  DEBUG
+#define MONITOR
+#endif
+
+static int gline;
+
+#ifdef  WATCH_DOG
+#define MYDOG  gline = __LINE__
+#else
+#define MYDOG                   /* NOOP */
+#endif
+
+
+
+#define CHAT_PIDFILE    "log/chat.pid"
+#define CHAT_LOGFILE    "log/chat.log"
+#define CHAT_INTERVAL   (60 * 30)
+#define SOCK_QLEN       1
+
+
+/* name of the main room (always exists) */
+
+
+#define MAIN_NAME       "main"
+#define MAIN_TOPIC      "烹茶可貢西天佛"
+
+
+#define ROOM_LOCKED     1
+#define ROOM_SECRET     2
+#define ROOM_OPENTOPIC  4
+#define ROOM_HANDUP     8
+#define ROOM_ALL        (NULL)
+
+
+#define LOCKED(room)    (room->rflag & ROOM_LOCKED)
+#define SECRET(room)    (room->rflag & ROOM_SECRET)
+#define OPENTOPIC(room) (room->rflag & ROOM_OPENTOPIC)
+#define RHANDUP(room)    (room->rflag & ROOM_HANDUP)
+
+#define RESTRICTED(usr) (usr->uflag == 0)       /* guest */
+#define CHATSYSOP(usr)  (usr->uflag & ( PERM_SYSOP | PERM_CHATROOM))
+/* Thor: SYSOP 與 CHATROOM都是 chat總管 */
+#define PERM_ROOMOP     PERM_CHAT       /* Thor: 借 PERM_CHAT為 PERM_ROOMOP */
+#define PERM_HANDUP     PERM_BM		/* 借 PERM_BM 為有沒有舉手過 */
+#define PERM_SAY        PERM_NOTOP	/* 借 PERM_NOTOP 為有沒有發表權 */
+
+/* 進入時需清空              */
+/* Thor: ROOMOP為房間管理員 */
+#define ROOMOP(usr)  (usr->uflag & ( PERM_ROOMOP | PERM_SYSOP | PERM_CHATROOM))
+#define CLOAK(usr)      (usr->uflag & PERM_CLOAK)
+#define HANDUP(usr)  (usr->uflag & PERM_HANDUP) 
+#define SAY(usr)      (usr->uflag & PERM_SAY)
+/* Thor: 聊天室隱身術 */
+
+
+/* ----------------------------------------------------- */
+/* ChatRoom data structure                               */
+/* ----------------------------------------------------- */
+
+typedef struct ChatRoom ChatRoom;
+typedef struct ChatUser ChatUser;
+typedef struct UserList UserList;
+typedef struct ChatCmd ChatCmd;
+typedef struct ChatAction ChatAction;
+
+struct ChatUser
+{
+    struct ChatUser *unext;
+    int sock;                     /* user socket */
+    int talksock;                 /* talk socket */
+    ChatRoom *room;
+    UserList *ignore;
+    int userno;
+    int uflag;
+    int clitype;                  /* Xshadow: client type. 1 for common client,
+				   * 0 for bbs only client */
+    time_t uptime;                /* Thor: unused */
+    char userid[IDLEN + 1];       /* real userid */
+    char chatid[9];               /* chat id */
+    char lasthost[30];            /* host address */
+    char ibuf[80];                /* buffer for non-blocking receiving */
+    int isize;                    /* current size of ibuf */
+};
+
+
+struct ChatRoom
+{
+    struct ChatRoom *next, *prev;
+    char name[IDLEN];
+    char topic[48];               /* Let the room op to define room topic */
+    int rflag;                    /* ROOM_LOCKED, ROOM_SECRET, ROOM_OPENTOPIC */
+    int occupants;                /* number of users in room */
+    UserList *invite;
+};
+
+
+struct UserList
+{
+    struct UserList *next;
+    int userno;
+    char userid[IDLEN + 1];
+};
+
+
+struct ChatCmd
+{
+    char *cmdstr;
+    void (*cmdfunc) ();
+    int exact;
+};
+
+
+static ChatRoom mainroom;
+static ChatUser *mainuser;
+static fd_set mainfds;
+static int maxfds;              /* number of sockets to select on */
+static int totaluser;           /* current number of connections */
+static struct timeval zerotv;   /* timeval for selecting */
+static char chatbuf[256];       /* general purpose buffer */
+static int common_client_command;
+
+static char msg_not_op[] = "◆ 您不是這間聊天室的 Op";
+static char msg_no_such_id[] = "◆ 目前沒有人使用 [%s] 這個聊天代號";
+static char msg_not_here[] = "◆ [%s] 不在這間聊天室";
+
+
+#define FUZZY_USER      ((ChatUser *) -1)
+
+
+typedef struct userec_t ACCT;
+
+/* ----------------------------------------------------- */
+/* acct_load for check acct                              */
+/* ----------------------------------------------------- */
+
+int
+acct_load(acct, userid)
+    ACCT *acct;
+    char *userid;
+{
+    int id;
+    if((id=searchuser(userid))<0)
+      {
+	return -1;
+      }
+    else
+      {
+	return get_record(FN_PASSWD, acct, sizeof(ACCT), id);  
+      }
+}
+
+
+/* ----------------------------------------------------- */
+/* str_lower for check acct                              */
+/* ----------------------------------------------------- */
+void
+str_lower(dst, src)
+    char *dst, *src;
+{
+    register int ch;
+
+    do
+    {
+	ch = *src++;
+	if (ch >= 'A' && ch <= 'Z')
+	    ch |= 0x20;
+	*dst++ = ch;
+    } while (ch);
+}
+
+/*
+ * str_ncpy() - similar to strncpy(3) but terminates string always with '\0'
+ * if n != 0, and doesn't do padding
+ */
+
+void
+str_ncpy(dst, src, n)
+    char *dst;
+    char *src;
+    int n;
+{
+    char *end;
+
+    end = dst + n;
+
+    do
+    {
+	n = (dst == end) ? 0 : *src++;
+	*dst++ = n;
+    } while (n);
+}
+
+
+/* ----------------------------------------------------- */
+/* usr_fpath for check acct                              */
+/* ----------------------------------------------------- */
+char *str_home_file = "home/%c/%s/%s";
+
+void
+usr_fpath(buf, userid, fname)
+    char *buf, *userid, *fname;
+{
+    sprintf(buf, str_home_file, userid[0], userid, fname);
+}
+
+/* ----------------------------------------------------- */
+/* chkpasswd for check passwd                            */
+/* ----------------------------------------------------- */
+char *crypt();
+static char pwbuf[PASSLEN];
+
+int
+chkpasswd(passwd, test)
+    char *passwd, *test;
+{
+    char *pw;
+
+    str_ncpy(pwbuf, test, PASSLEN);
+    pw = crypt(pwbuf, passwd);
+    return (!strncmp(pw, passwd, PASSLEN));
+}
+
+/* ----------------------------------------------------- */
+/* operation log and debug information                   */
+/* ----------------------------------------------------- */
+
+
+static int flog;                /* log file descriptor */
+
+
+static void
+logit(key, msg)
+    char *key;
+    char *msg;
+{
+    time_t now;
+    struct tm *p;
+    char buf[512];
+
+    time(&now);
+    p = localtime(&now);
+    sprintf(buf, "%02d/%02d %02d:%02d:%02d %-13s%s\n",
+	    p->tm_mon + 1, p->tm_mday,
+	    p->tm_hour, p->tm_min, p->tm_sec, key, msg);
+    write(flog, buf, strlen(buf));
+}
+
+
+static void
+log_init()
+{
+    flog = open(CHAT_LOGFILE, O_WRONLY | O_CREAT | O_APPEND, 0644);
+    logit("START", "chat daemon");
+}
+
+
+static void
+log_close()
+{
+    close(flog);
+}
+
+
+#ifdef  DEBUG
+static void
+debug_user()
+{
+    register ChatUser *user;
+    int i;
+    char buf[80];
+
+    i = 0;
+    for (user = mainuser; user; user = user->unext)
+    {
+	sprintf(buf, "%d) %s %s", ++i, user->userid, user->chatid);
+	logit("DEBUG_U", buf);
+    }
+}
+
+
+static void
+debug_room()
+{
+    register ChatRoom *room;
+    int i;
+    char buf[80];
+
+    i = 0;
+    room = &mainroom;
+
+    do
+    {
+	sprintf(buf, "%d) %s %d", ++i, room->name, room->occupants);
+	logit("DEBUG_R", buf);
+    } while (room = room->next);
+}
+#endif                          /* DEBUG */
+
+
+/* ----------------------------------------------------- */
+/* string routines                                       */
+/* ----------------------------------------------------- */
+
+
+static int valid_chatid(register char *id) {
+    register int ch, len;
+    
+    for(len = 0; (ch = *id); id++) {
+	/* Thor: check for endless */
+	MYDOG;
+	
+	if(ch == '/' || ch == '*' || ch == ':')
+	    return 0;
+	if(++len > 8)
+	    return 0;
+    }
+    return len;
+}
+
+/* Case Independent strcmp : 1 ==> euqal */
+
+
+static int
+str_equal(s1, s2)
+    register unsigned char *s1, *s2;      /* Thor: 加上 unsigned,
+                                         * 避免中文的問題 */
+{
+    register int c1, c2;
+
+    for (;;)
+    {                             /* Thor: check for endless */
+	MYDOG;
+
+	c1 = *s1;
+	if (c1 >= 'A' && c1 <= 'Z')
+	    c1 |= 32;
+
+	c2 = *s2;
+	if (c2 >= 'A' && c2 <= 'Z')
+	    c2 |= 32;
+
+	if (c1 != c2)
+	    return 0;
+
+	if (!c1)
+	    return 1;
+
+	s1++;
+	s2++;
+    }
+}
+
+
+/* ----------------------------------------------------- */
+/* match strings' similarity case-insensitively          */
+/* ----------------------------------------------------- */
+/* str_match(keyword, string)                            */
+/* ----------------------------------------------------- */
+/* 0 : equal            ("foo", "foo")                   */
+/* -1 : mismatch        ("abc", "xyz")                   */
+/* ow : similar         ("goo", "good")                  */
+/* ----------------------------------------------------- */
+
+
+static int
+str_match(s1, s2)
+    register unsigned char *s1, *s2;      /* Thor: 加上 unsigned,
+                                         * 避免中文的問題 */
+{
+    register int c1, c2;
+
+    for (;;)
+    {                             /* Thor: check for endless */
+	MYDOG;
+
+	c2 = *s2;
+	c1 = *s1;
+	if (!c1)
+	{
+	    return c2;
+	}
+
+	if (c1 >= 'A' && c1 <= 'Z')
+	    c1 |= 32;
+
+	if (c2 >= 'A' && c2 <= 'Z')
+	    c2 |= 32;
+
+	if (c1 != c2)
+	    return -1;
+
+	s1++;
+	s2++;
+    }
+}
+
+
+/* ----------------------------------------------------- */
+/* search user/room by its ID                            */
+/* ----------------------------------------------------- */
+
+
+static ChatUser *
+cuser_by_userid(userid)
+    char *userid;
+{
+    register ChatUser *cu;
+
+    for (cu = mainuser; cu; cu = cu->unext)
+    {
+	MYDOG;
+
+	if (str_equal(userid, cu->userid))
+	    break;
+    }
+    return cu;
+}
+
+
+static ChatUser *
+cuser_by_chatid(chatid)
+    char *chatid;
+{
+    register ChatUser *cu;
+
+    for (cu = mainuser; cu; cu = cu->unext)
+    {
+	MYDOG;
+
+	if (str_equal(chatid, cu->chatid))
+	    break;
+    }
+    return cu;
+}
+
+
+static ChatUser *
+fuzzy_cuser_by_chatid(chatid)
+    char *chatid;
+{
+    register ChatUser *cu, *xuser;
+    int mode;
+
+    xuser = NULL;
+
+    for (cu = mainuser; cu; cu = cu->unext)
+    {
+	MYDOG;
+
+	mode = str_match(chatid, cu->chatid);
+	if (mode == 0)
+	    return cu;
+
+	if (mode > 0)
+	{
+	    if (xuser == NULL)
+		xuser = cu;
+	    else
+		return FUZZY_USER;      /* 符合者大於 2 人 */
+	}
+    }
+    return xuser;
+}
+
+
+static ChatRoom *croom_by_roomid(char *roomid) {
+    register ChatRoom *room;
+    
+    room = &mainroom;
+    do {
+	MYDOG;
+	
+	if(str_equal(roomid, room->name))
+	    break;
+    } while((room = room->next));
+    return room;
+}
+
+
+/* ----------------------------------------------------- */
+/* UserList routines                                     */
+/* ----------------------------------------------------- */
+
+
+static void
+list_free(list)
+    UserList *list;
+{
+    UserList *tmp;
+
+    while (list)
+    {
+	MYDOG;
+
+	tmp = list->next;
+
+	free(list);
+	MYDOG;
+	list = tmp;
+    }
+}
+
+
+static void
+list_add(list, user)
+    UserList **list;
+    ChatUser *user;
+{
+    UserList *node;
+
+    MYDOG;
+
+    if((node = (UserList *) malloc(sizeof(UserList)))) {
+	/* Thor: 防止空間不夠 */
+	strcpy(node->userid, user->userid);
+	node->userno = user->userno;
+	node->next = *list;
+	*list = node;
+    }
+    MYDOG;
+}
+
+
+static int
+list_delete(list, userid)
+    UserList **list;
+    char *userid;
+{
+    UserList *node;
+
+    while((node = *list)) {
+	MYDOG;
+
+	if (str_equal(node->userid, userid))
+	{
+	    *list = node->next;
+	    MYDOG;
+	    free(node);
+	    MYDOG;
+	    return 1;
+	}
+	list = &node->next;         /* Thor: list要跟著前進 */
+    }
+
+    return 0;
+}
+
+
+static int
+list_belong(list, userno)
+    UserList *list;
+    int userno;
+{
+    while (list)
+    {
+	MYDOG;
+
+	if (userno == list->userno)
+	    return 1;
+	list = list->next;
+    }
+    return 0;
+}
+
+
+/* ------------------------------------------------------ */
+/* non-blocking socket routines : send message to users   */
+/* ------------------------------------------------------ */
+
+
+static void
+do_send(nfds, wset, msg, number)
+    int nfds;
+    fd_set *wset;
+    char *msg;
+    int number;
+{
+    int sr;
+
+    /* Thor: for future reservation bug */
+
+    zerotv.tv_sec = 0;
+    zerotv.tv_usec = 16384;  /* Ptt: 改成16384 避免不按時for loop吃cpu time
+				16384 約每秒64次 */
+
+    MYDOG;
+
+    sr = select(nfds + 1, NULL, wset, NULL, &zerotv);
+
+    MYDOG;
+
+    if (sr > 0)
+    {
+	register int len;
+
+	len = strlen(msg) + 1;
+	while (nfds >= 0)
+	{
+	    MYDOG;
+
+	    if (FD_ISSET(nfds, wset))
+	    {
+		MYDOG;
+		send(nfds, msg, len, 0);/* Thor: 如果buffer滿了, 仍會 block */
+		MYDOG;
+		if (--sr <= 0)
+		    return;
+	    }
+	    nfds--;
+	}
+    }
+}
+
+
+static void
+send_to_room(room, msg, userno, number)
+    ChatRoom *room;
+    char *msg;
+    int userno;
+    int number;
+{
+    ChatUser *cu;
+    fd_set wset, *wptr;
+    int sock, max;
+    static char sendbuf[256];
+    int clitype;                  /* 分為 bbs client 及 common client 兩次處理 */
+
+    for (clitype = (number == MSG_MESSAGE || !number) ? 0 : 1; clitype < 2; clitype++)
+    {
+
+	FD_ZERO(wptr = &wset);
+	max = -1;
+
+	for (cu = mainuser; cu; cu = cu->unext)
+	{
+	    MYDOG;
+
+	    if (room == cu->room || room == ROOM_ALL)
+	    {
+		if (cu->clitype == clitype && (!userno || !list_belong(cu->ignore, userno)))
+		{
+		    sock = cu->sock;
+		    FD_SET(sock, wptr);
+		    if (max < sock)
+			max = sock;
+		}
+	    }
+	}
+
+	if (max < 0)
+	    continue;
+
+	if (clitype)
+	{
+	    if (strlen(msg))
+		sprintf(sendbuf, "%3d %s", number, msg);
+	    else
+		sprintf(sendbuf, "%3d", number);
+
+	    do_send(max, wptr, sendbuf);
+	}
+	else
+	    do_send(max, wptr, msg);
+    }
+}
+
+
+static void
+send_to_user(user, msg, userno, number)
+    ChatUser *user;
+    char *msg;
+    int userno;
+    int number;
+{
+    if (!user->clitype && number && number != MSG_MESSAGE)
+	return;
+
+    if (!userno || !list_belong(user->ignore, userno))
+    {
+	fd_set wset, *wptr;
+	int sock;
+	static char sendbuf[256];
+
+	sock = user->sock;
+	FD_ZERO(wptr = &wset);
+	FD_SET(sock, wptr);
+
+	if (user->clitype)
+	{
+	    if (strlen(msg))
+		sprintf(sendbuf, "%3d %s", number, msg);
+	    else
+		sprintf(sendbuf, "%3d", number);
+	    do_send(sock, wptr, sendbuf);
+	}
+	else
+	    do_send(sock, wptr, msg);
+    }
+}
+
+#if 0
+static void
+send_to_sock(sock, msg)         /* Thor: unused */
+    int sock;
+    char *msg;
+{
+    fd_set wset, *wptr;
+
+    FD_ZERO(wptr = &wset);
+    FD_SET(sock, wptr);
+    do_send(sock, wptr, msg);
+}
+#endif
+
+/* ----------------------------------------------------- */
+
+static void
+room_changed(room)
+    ChatRoom *room;
+{
+    if (!room)
+	return;
+
+    sprintf(chatbuf, "= %s %d %d %s", room->name, room->occupants, room->rflag, room->topic);
+    send_to_room(ROOM_ALL, chatbuf, 0, MSG_ROOMNOTIFY);
+}
+
+static void
+user_changed(cu)
+    ChatUser *cu;
+{
+    if (!cu)
+	return;
+
+    sprintf(chatbuf, "= %s %s %s %s", cu->userid, cu->chatid, cu->room->name, cu->lasthost);
+    if (ROOMOP(cu))
+	strcat(chatbuf, " Op");
+    send_to_room(cu->room, chatbuf, 0, MSG_USERNOTIFY);
+}
+
+static void
+exit_room(user, mode, msg)
+    ChatUser *user;
+    int mode;
+    char *msg;
+{
+    ChatRoom *room;
+
+    if((room = user->room)) {
+	user->room = NULL;
+	user->uflag &= ~PERM_ROOMOP;
+
+	if (--room->occupants > 0)
+	{
+	    char *chatid;
+
+	    chatid = user->chatid;
+	    switch (mode)
+	    {
+	    case EXIT_LOGOUT:
+
+		sprintf(chatbuf, "◆ %s 離開了 ...", chatid);
+		if (msg && *msg)
+		{
+		    strcat(chatbuf, ": ");
+		    msg[79] = 0;          /* Thor:防止太長 */
+		    strncat(chatbuf, msg, 80);
+		}
+		break;
+
+	    case EXIT_LOSTCONN:
+
+		sprintf(chatbuf, "◆ %s 成了斷線的風箏囉", chatid);
+		break;
+
+	    case EXIT_KICK:
+
+		sprintf(chatbuf, "◆ 哈哈！%s 被踢出去了", chatid);
+		break;
+	    }
+	    if (!CLOAK(user))         /* Thor: 聊天室隱身術 */
+		send_to_room(room, chatbuf, 0, MSG_MESSAGE);
+
+	    sprintf(chatbuf, "- %s", user->userid);
+	    send_to_room(room, chatbuf, 0, MSG_USERNOTIFY);
+	    room_changed(room);
+
+	    return;
+	}
+
+	else if (room != &mainroom)
+	{                           /* Thor: 人數為0時,不是mainroom才free */
+	    register ChatRoom *next;
+
+#ifdef  DEBUG
+	    debug_room();
+#endif
+
+	    sprintf(chatbuf, "- %s", room->name);
+	    send_to_room(ROOM_ALL, chatbuf, 0, MSG_ROOMNOTIFY);
+
+	    room->prev->next = room->next;
+	    if((next = room->next))
+		next->prev = room->prev;
+	    list_free(room->invite);
+
+	    MYDOG;
+	    free(room);
+	    MYDOG;
+
+#ifdef  DEBUG
+	    debug_room();
+#endif
+	}
+    }
+}
+
+
+/* ----------------------------------------------------- */
+/* chat commands                                         */
+/* ----------------------------------------------------- */
+
+/* ----------------------------------------------------- */
+/* (.ACCT) 使用者帳號 (account) subroutines              */
+/* ----------------------------------------------------- */
+
+static char datemsg[32];
+
+char *
+Ctime(clock)
+    time_t *clock;
+{
+    struct tm *t = localtime(clock);
+    static char week[] = "日一二三四五六";
+
+    sprintf(datemsg, "%d年%2d月%2d日%3d:%02d:%02d 星期%.2s",
+	    t->tm_year - 11, t->tm_mon + 1, t->tm_mday,
+	    t->tm_hour, t->tm_min, t->tm_sec, &week[t->tm_wday << 1]);
+    return (datemsg);
+}
+
+static void
+chat_query(cu, msg)
+    ChatUser *cu;
+    char *msg;
+{
+    char str[256];
+    int i;
+    ACCT xuser;
+    FILE *fp;
+
+    if (acct_load(&xuser, msg) >= 0)
+    {
+	sprintf(chatbuf, "%s(%s) 共上站 %d 次，文章 %d 篇",
+		xuser.userid, xuser.username, xuser.numlogins, xuser.numposts);
+	send_to_user(cu, chatbuf, 0, MSG_MESSAGE);
+
+	sprintf(chatbuf, "最近(%s)從(%s)上站", Ctime(&xuser.lastlogin),
+		(xuser.lasthost[0] ? xuser.lasthost : "外太空"));
+	send_to_user(cu, chatbuf, 0, MSG_MESSAGE);
+
+	usr_fpath(chatbuf, xuser.userid, "plans");
+	fp = fopen(chatbuf, "rt");
+	i = 0;
+	while (fp && fgets(str, 256, fp))
+	{
+	    if (!strlen(str))
+		continue;
+
+	    str[strlen(str) - 1] = 0;
+	    send_to_user(cu, str, 0, MSG_MESSAGE);
+	    if (++i >= MAX_QUERYLINES)
+		break;
+	}
+	fclose(fp);
+    }
+    else
+    {
+	sprintf(chatbuf, msg_no_such_id, msg);
+	send_to_user(cu, chatbuf, 0, MSG_MESSAGE);
+    }
+}
+
+static void
+chat_clear(cu, msg)
+    ChatUser *cu;
+    char *msg;
+{
+    if (cu->clitype)
+	send_to_user(cu, "", 0, MSG_CLRSCR);
+    else
+	send_to_user(cu, "/c", 0, MSG_MESSAGE);
+}
+
+static void
+chat_date(cu, msg)
+    ChatUser *cu;
+    char *msg;
+{
+    time_t thetime;
+
+    time(&thetime);
+    sprintf(chatbuf, "◆ 標準時間: %s", Ctime(&thetime));
+    send_to_user(cu, chatbuf, 0, MSG_MESSAGE);
+}
+
+
+static void
+chat_topic(cu, msg)
+    ChatUser *cu;
+    char *msg;
+{
+    ChatRoom *room;
+    char *topic;
+
+    if (!ROOMOP(cu) && !OPENTOPIC(cu->room))
+    {
+	send_to_user(cu, msg_not_op, 0, MSG_MESSAGE);
+	return;
+    }
+
+    if (*msg == '\0')
+    {
+	send_to_user(cu, "※ 請指定話題", 0, MSG_MESSAGE);
+	return;
+    }
+
+    room = cu->room;
+    topic = room->topic;          /* Thor: room 有可能 NULL嗎?? */
+    strncpy(topic, msg, 47);
+    topic[47] = '\0';
+
+    if (cu->clitype)
+	send_to_room(room, topic, 0, MSG_TOPIC);
+    else
+    {
+	sprintf(chatbuf, "/t%s", topic);
+	send_to_room(room, chatbuf, 0, 0);
+    }
+
+    room_changed(room);
+
+    sprintf(chatbuf, "◆ %s 將話題改為 %s", cu->chatid, topic);
+    if (!CLOAK(cu))               /* Thor: 聊天室隱身術 */
+	send_to_room(room, chatbuf, 0, MSG_MESSAGE);
+}
+
+
+static void
+chat_version(cu, msg)
+    ChatUser *cu;
+    char *msg;
+{
+    sprintf(chatbuf, "%d %d", XCHAT_VERSION_MAJOR, XCHAT_VERSION_MINOR);
+    send_to_user(cu, chatbuf, 0, MSG_VERSION);
+}
+
+static void
+chat_nick(cu, msg)
+    ChatUser *cu;
+    char *msg;
+{
+    char *chatid, *str;
+    ChatUser *xuser;
+
+    chatid = nextword(&msg);
+    chatid[8] = '\0';
+    if (!valid_chatid(chatid))
+    {
+	send_to_user(cu, "※ 這個聊天代號是不正確的", 0, MSG_MESSAGE);
+	return;
+    }
+
+    xuser = cuser_by_chatid(chatid);
+    if (xuser != NULL && xuser != cu)
+    {
+	send_to_user(cu, "※ 已經有人捷足先登囉", 0, MSG_MESSAGE);
+	return;
+    }
+
+    str = cu->chatid;
+
+    sprintf(chatbuf, "※ %s 將聊天代號改為 %s", str, chatid);
+    if (!CLOAK(cu))               /* Thor: 聊天室隱身術 */
+	send_to_room(cu->room, chatbuf, cu->userno, MSG_MESSAGE);
+
+    strcpy(str, chatid);
+
+    user_changed(cu);
+
+    if (cu->clitype)
+	send_to_user(cu, chatid, 0, MSG_NICK);
+    else
+    {
+	sprintf(chatbuf, "/n%s", chatid);
+	send_to_user(cu, chatbuf, 0, 0);
+    }
+}
+
+static void
+chat_list_rooms(cuser, msg)
+    ChatUser *cuser;
+    char *msg;
+{
+    ChatRoom *cr, *room;
+
+    if (RESTRICTED(cuser))
+    {
+	send_to_user(cuser, "※ 您沒有權限列出現有的聊天室", 0, MSG_MESSAGE);
+	return;
+    }
+
+    if (common_client_command)
+	send_to_user(cuser, "", 0, MSG_ROOMLISTSTART);
+    else
+	send_to_user(cuser, " 談天室名稱  │人數│話題        ", 0, MSG_MESSAGE);
+
+    room = cuser->room;
+    cr = &mainroom;
+    do
+    {
+	MYDOG;
+
+
+	if (!SECRET(cr) || CHATSYSOP(cuser) || (cr == room && ROOMOP(cuser)))
+	{
+	    if (common_client_command)
+	    {
+		sprintf(chatbuf, "%s %d %d %s", cr->name, cr->occupants, cr->rflag, cr->topic);
+		send_to_user(cuser, chatbuf, 0, MSG_ROOMLIST);
+	    }
+	    else
+	    {
+		sprintf(chatbuf, " %-12s│%4d│%s", cr->name, cr->occupants, cr->topic);
+		if (LOCKED(cr))
+		    strcat(chatbuf, " [鎖住]");
+		if (SECRET(cr))
+		    strcat(chatbuf, " [秘密]");
+		if (OPENTOPIC(cr))
+		    strcat(chatbuf, " [話題]");
+		send_to_user(cuser, chatbuf, 0, MSG_MESSAGE);
+	    }
+
+	}
+    } while((cr = cr->next));
+
+    if (common_client_command)
+	send_to_user(cuser, "", 0, MSG_ROOMLISTEND);
+}
+
+
+static void
+chat_do_user_list(cu, msg, theroom)
+    ChatUser *cu;
+    char *msg;
+    ChatRoom *theroom;
+{
+    ChatRoom *myroom, *room;
+    ChatUser *user;
+
+    int start, stop, curr = 0;
+    start = atoi(nextword(&msg));
+    stop = atoi(nextword(&msg));
+
+    myroom = cu->room;
+
+#ifdef DEBUG
+    logit(cu->chatid, "do user list");
+#endif
+
+    if (common_client_command)
+	send_to_user(cu, "", 0, MSG_USERLISTSTART);
+    else
+	send_to_user(cu, " 聊天代號│使用者代號  │聊天室 ", 0, MSG_MESSAGE);
+
+    for (user = mainuser; user; user = user->unext)
+    {
+	MYDOG;
+
+
+	room = user->room;
+	if ((theroom != ROOM_ALL) && (theroom != room))
+	    continue;
+
+	if (myroom != room)
+	{
+	    if (RESTRICTED(cu) ||
+		(room && SECRET(room) && !CHATSYSOP(cu)))
+		continue;
+	}
+
+	if (CLOAK(user))            /* Thor: 隱身術 */
+	    continue;
+
+
+	curr++;
+	if (start && curr < start)
+	    continue;
+	else if (stop && (curr > stop))
+	    break;
+
+	if (common_client_command)
+	{
+	    if (!room)
+		continue;               /* Xshadow: 還沒進入任何房間的就不列出 */
+
+	    sprintf(chatbuf, "%s %s %s %s", user->chatid, user->userid, room->name, user->lasthost);
+	    if (ROOMOP(user))
+		strcat(chatbuf, " Op");
+	}
+	else
+	{
+	    sprintf(chatbuf, " %-8s│%-12s│%s", user->chatid, user->userid, room ? room->name : "[在門口徘徊]");
+	    if (ROOMOP(user))
+		strcat(chatbuf, " [Op]");
+	}
+
+#ifdef  DEBUG
+	logit("list_U", chatbuf);
+#endif
+
+	send_to_user(cu, chatbuf, 0, common_client_command ? MSG_USERLIST : MSG_MESSAGE);
+    }
+    if (common_client_command)
+	send_to_user(cu, "", 0, MSG_USERLISTEND);
+}
+
+static void
+chat_list_by_room(cu, msg)
+    ChatUser *cu;
+    char *msg;
+{
+    ChatRoom *whichroom;
+    char *roomstr;
+
+    roomstr = nextword(&msg);
+    if (*roomstr == '\0')
+	whichroom = cu->room;
+    else
+    {
+	if ((whichroom = croom_by_roomid(roomstr)) == NULL)
+	{
+	    sprintf(chatbuf, "※ 沒有 [%s] 這個聊天室", roomstr);
+	    send_to_user(cu, chatbuf, 0, MSG_MESSAGE);
+	    return;
+	}
+
+	if (whichroom != cu->room && SECRET(whichroom) && !CHATSYSOP(cu))
+	{                           /* Thor: 要不要測同一room雖SECRET但可以列?
+				     * Xshadow: 我改成同一 room 就可以列 */
+	    send_to_user(cu, "※ 無法列出在秘密聊天室的使用者", 0, MSG_MESSAGE);
+	    return;
+	}
+    }
+    chat_do_user_list(cu, msg, whichroom);
+}
+
+
+static void
+chat_list_users(cu, msg)
+    ChatUser *cu;
+    char *msg;
+{
+    chat_do_user_list(cu, msg, ROOM_ALL);
+}
+
+static void
+chat_chatroom(cu, msg)
+    ChatUser *cu;
+    char *msg;
+{
+    if (common_client_command)
+	send_to_user(cu, "批踢踢茶藝館 4 21", 0, MSG_CHATROOM);
+}
+
+static void
+chat_map_chatids(cu, whichroom)
+    ChatUser *cu;                 /* Thor: 還沒有作不同間的 */
+    ChatRoom *whichroom;
+{
+    int c;
+    ChatRoom *myroom, *room;
+    ChatUser *user;
+
+    /* myroom = cu->room; */
+    myroom = whichroom;
+    send_to_user(cu,
+		 " 聊天代號 使用者代號  │ 聊天代號 使用者代號  │ 聊天代號 使用者代號 ", 0, MSG_MESSAGE);
+
+    c = 0;
+
+    for (user = mainuser; user; user = user->unext)
+    {
+	MYDOG;
+
+	room = user->room;
+	MYDOG;
+	if (whichroom != ROOM_ALL && whichroom != room)
+	    continue;
+	MYDOG;
+	if (myroom != room)
+	{
+	    if (RESTRICTED(cu) ||     /* Thor: 要先check room 是不是空的 */
+		(room && SECRET(room) && !CHATSYSOP(cu)))
+		continue;
+	}
+	MYDOG;
+	if (CLOAK(user))            /* Thor:隱身術 */
+	    continue;
+	sprintf(chatbuf + (c * 24), " %-8s%c%-12s%s",
+		user->chatid, ROOMOP(user) ? '*' : ' ',
+		user->userid, (c < 2 ? "│" : "  "));
+	MYDOG;
+	if (++c == 3)
+	{
+	    send_to_user(cu, chatbuf, 0, MSG_MESSAGE);
+	    c = 0;
+	}
+	MYDOG;
+    }
+    if (c > 0)
+	send_to_user(cu, chatbuf, 0, MSG_MESSAGE);
+}
+
+
+static void
+chat_map_chatids_thisroom(cu, msg)
+    ChatUser *cu;
+    char *msg;
+{
+    chat_map_chatids(cu, cu->room);
+}
+
+
+static void
+chat_setroom(cu, msg)
+    ChatUser *cu;
+    char *msg;
+{
+    char *modestr;
+    ChatRoom *room;
+    char *chatid;
+    int sign;
+    int flag;
+    char *fstr = NULL;
+
+    if (!ROOMOP(cu))
+    {
+	send_to_user(cu, msg_not_op, 0, MSG_MESSAGE);
+	return;
+    }
+
+    modestr = nextword(&msg);
+    sign = 1;
+    if (*modestr == '+')
+	modestr++;
+    else if (*modestr == '-')
+    {
+	modestr++;
+	sign = 0;
+    }
+    if (*modestr == '\0')
+    {
+	send_to_user(cu,
+		     "※ 請指定狀態: {[+(設定)][-(取消)]}{[l(鎖住)][s(秘密)][t(開放話題)}", 0, MSG_MESSAGE);
+	return;
+    }
+
+    room = cu->room;
+    chatid = cu->chatid;
+
+    while (*modestr)
+    {
+	flag = 0;
+	switch (*modestr)
+	{
+	case 'l':
+	case 'L':
+	    flag = ROOM_LOCKED;
+	    fstr = "鎖住";
+	    break;
+
+	case 's':
+	case 'S':
+	    flag = ROOM_SECRET;
+	    fstr = "秘密";
+	    break;
+
+	case 't':
+	case 'T':
+	    flag = ROOM_OPENTOPIC;
+	    fstr = "開放話題";
+	    break;
+	case 'h':
+	case 'H':
+	    flag = ROOM_OPENTOPIC;
+	    fstr = "舉手發言";
+	    break;
+
+	default:
+	    sprintf(chatbuf, "※ 狀態錯誤：[%c]", *modestr);
+	    send_to_user(cu, chatbuf, 0, MSG_MESSAGE);
+	}
+
+	/* Thor: check room 是不是空的, 應該不是空的 */
+	if (flag && (room->rflag & flag) != sign * flag)
+	{
+	    room->rflag ^= flag;
+	    sprintf(chatbuf, "※ 本聊天室被 %s %s [%s] 狀態",
+		    chatid, sign ? "設定為" : "取消", fstr);
+	    if (!CLOAK(cu))           /* Thor: 聊天室隱身術 */
+		send_to_room(room, chatbuf, 0, MSG_MESSAGE);
+	}
+	modestr++;
+    }
+    room_changed(room);
+}
+
+static char *chat_msg[] =
+{
+    "[//]help", "MUD-like 社交動詞",
+    "[/h]elp op", "談天室管理員專用指令",
+    "[/a]ct <msg>", "做一個動作",
+    "[/b]ye [msg]", "道別",
+    "[/c]lear  [/d]ate", "清除螢幕  目前時間",
+    /* "[/d]ate", "目前時間", *//* Thor: 指令太多 */
+
+#if 0
+    "[/f]ire <user> <msg>", "發送熱訊",   /* Thor.0727: 和 flag 衝key */
+#endif
+
+    "[/i]gnore [user]", "忽略使用者",
+    "[/j]oin <room>", "建立或加入談天室",
+    "[/l]ist [start [stop]]", "列出談天室使用者",
+    "[/m]sg <id|user> <msg>", "跟 <id> 說悄悄話",
+    "[/n]ick <id>", "將談天代號換成 <id>",
+    "[/p]ager", "切換呼叫器",
+    "[/q]uery <user>", "查詢網友",
+    "[/r]oom", "列出一般談天室",
+    "[/t]ape", "開關錄音機",
+    "[/u]nignore <user>", "取消忽略",
+
+#if 0
+    "[/u]sers", "列出站上使用者",
+#endif
+
+    "[/w]ho", "列出本談天室使用者",
+    "[/w]hoin <room>", "列出談天室<room> 的使用者",
+    NULL
+};
+
+
+static char *room_msg[] =
+{
+    "[/f]lag [+-][lsth]", "設定鎖定、秘密、開放話題、舉手發言",
+    "[/i]nvite <id>", "邀請 <id> 加入談天室",
+    "[/kick] <id>", "將 <id> 踢出談天室",
+    "[/o]p <id>", "將 Op 的權力轉移給 <id>",
+    "[/topic] <text>", "換個話題",
+    "[/w]all", "廣播 (站長專用)",
+    NULL
+};
+
+
+static void
+chat_help(cu, msg)
+    ChatUser *cu;
+    char *msg;
+{
+    char **table, *str;
+
+    if (str_equal(nextword(&msg), "op"))
+    {
+	send_to_user(cu, "談天室管理員專用指令", 0, MSG_MESSAGE);
+	table = room_msg;
+    }
+    else
+    {
+	table = chat_msg;
+    }
+
+    while((str = *table++)) {
+	sprintf(chatbuf, "  %-20s- %s", str, *table++);
+	send_to_user(cu, chatbuf, 0, MSG_MESSAGE);
+    }
+}
+
+
+static void
+chat_private(cu, msg)
+    ChatUser *cu;
+    char *msg;
+{
+    char *recipient;
+    ChatUser *xuser;
+    int userno;
+
+    userno = 0;
+    recipient = nextword(&msg);
+    xuser = (ChatUser *) fuzzy_cuser_by_chatid(recipient);
+    if (xuser == NULL)
+    {                             /* Thor.0724: 用 userid也可傳悄悄話 */
+	xuser = cuser_by_userid(recipient);
+    }
+    if (xuser == NULL)
+    {
+	sprintf(chatbuf, msg_no_such_id, recipient);
+    }
+    else if (xuser == FUZZY_USER)
+    {                             /* ambiguous */
+	strcpy(chatbuf, "※ 請指明聊天代號");
+    }
+    else if (*msg)
+    {
+	userno = cu->userno;
+	sprintf(chatbuf, "*%s* ", cu->chatid);
+	msg[79] = 0;                /* Thor:防止太長 */
+	strncat(chatbuf, msg, 80);
+	send_to_user(xuser, chatbuf, userno, MSG_MESSAGE);
+
+	if (xuser->clitype)
+	{                           /* Xshadow: 如果對方是用 client 上來的 */
+	    sprintf(chatbuf, "%s %s ", cu->userid, cu->chatid);
+	    msg[79] = 0;
+	    strncat(chatbuf, msg, 80);
+	    send_to_user(xuser, chatbuf, userno, MSG_PRIVMSG);
+	}
+	if (cu->clitype)
+	{
+	    sprintf(chatbuf, "%s %s ", xuser->userid, xuser->chatid);
+	    msg[79] = 0;
+	    strncat(chatbuf, msg, 80);
+	    send_to_user(cu, chatbuf, 0, MSG_MYPRIVMSG);
+	}
+
+	sprintf(chatbuf, "%s> ", xuser->chatid);
+	strncat(chatbuf, msg, 80);
+    }
+    else
+    {
+	sprintf(chatbuf, "※ 您想對 %s 說什麼話呢？", xuser->chatid);
+    }
+    send_to_user(cu, chatbuf, userno, MSG_MESSAGE);       /* Thor: userno 要改成 0
+							   * 嗎? */
+}
+
+
+static void
+chat_cloak(cu, msg)
+    ChatUser *cu;
+    char *msg;
+{
+    if (CHATSYSOP(cu))
+    {
+	cu->uflag ^= PERM_CLOAK;
+	sprintf(chatbuf, "◆ %s", CLOAK(cu) ? MSG_CLOAKED : MSG_UNCLOAK);
+	send_to_user(cu, chatbuf, 0, MSG_MESSAGE);
+    }
+}
+
+
+
+/* ----------------------------------------------------- */
+
+
+static void
+arrive_room(cuser, room)
+    ChatUser *cuser;
+    ChatRoom *room;
+{
+    char *rname;
+
+    /* Xshadow: 不必送給自己, 反正換房間就會重新 build user list */
+    sprintf(chatbuf, "+ %s %s %s %s", cuser->userid, cuser->chatid, room->name, cuser->lasthost);
+    if (ROOMOP(cuser))
+	strcat(chatbuf, " Op");
+    send_to_room(room, chatbuf, 0, MSG_USERNOTIFY);
+
+    cuser->room = room;
+    room->occupants++;
+    rname = room->name;
+
+    room_changed(room);
+
+    if (cuser->clitype)
+    {
+	send_to_user(cuser, rname, 0, MSG_ROOM);
+	send_to_user(cuser, room->topic, 0, MSG_TOPIC);
+    }
+    else
+    {
+	sprintf(chatbuf, "/r%s", rname);
+	send_to_user(cuser, chatbuf, 0, 0);
+	sprintf(chatbuf, "/t%s", room->topic);
+	send_to_user(cuser, chatbuf, 0, 0);
+    }
+
+    sprintf(chatbuf, "※ %s 進入 [%s] 包廂",
+	    cuser->chatid, rname);
+    if (!CLOAK(cuser))            /* Thor: 聊天室隱身術 */
+	send_to_room(room, chatbuf, cuser->userno, MSG_MESSAGE);
+}
+
+
+static int
+enter_room(cuser, rname, msg)
+    ChatUser *cuser;
+    char *rname;
+    char *msg;
+{
+    ChatRoom *room;
+    int create;
+
+    create = 0;
+    room = croom_by_roomid(rname);
+    if (room == NULL)
+    {
+	/* new room */
+
+#ifdef  MONITOR
+	logit(cuser->userid, "create new room");
+#endif
+
+	MYDOG;
+
+	room = (ChatRoom *) malloc(sizeof(ChatRoom));
+	MYDOG;
+	if (room == NULL)
+	{
+	    send_to_user(cuser, "※ 無法再新闢包廂了", 0, MSG_MESSAGE);
+	    return 0;
+	}
+
+	memset(room, 0, sizeof(ChatRoom));
+	memcpy(room->name, rname, IDLEN - 1);
+	strcpy(room->topic, "這是一個新天地");
+
+	sprintf(chatbuf, "+ %s 1 0 %s", room->name, room->topic);
+	send_to_room(ROOM_ALL, chatbuf, 0, MSG_ROOMNOTIFY);
+
+	if (mainroom.next != NULL)
+	    mainroom.next->prev = room;
+	room->next = mainroom.next;
+	mainroom.next = room;
+	room->prev = &mainroom;
+
+	create = 1;
+    }
+    else
+    {
+	if (cuser->room == room)
+	{
+	    sprintf(chatbuf, "※ 您本來就在 [%s] 聊天室囉 :)", rname);
+	    send_to_user(cuser, chatbuf, 0, MSG_MESSAGE);
+	    return 0;
+	}
+
+	if (!CHATSYSOP(cuser) && LOCKED(room) && !list_belong(room->invite, cuser->userno))
+	{
+	    send_to_user(cuser, "※ 內有惡犬，非請莫入", 0, MSG_MESSAGE);
+	    return 0;
+	}
+    }
+
+    exit_room(cuser, EXIT_LOGOUT, msg);
+    arrive_room(cuser, room);
+
+    if (create)
+	cuser->uflag |= PERM_ROOMOP;
+
+    return 0;
+}
+
+
+static void
+logout_user(cuser)
+    ChatUser *cuser;
+{
+    int sock;
+    ChatUser *xuser, *prev;
+
+#ifdef  DEBUG
+    logit("before", "logout");
+    debug_user();
+#endif
+
+    sock = cuser->sock;
+    shutdown(sock, 2);
+    close(sock);
+
+    MYDOG;
+
+    FD_CLR(sock, &mainfds);
+
+#if 0   /* Thor: 也許不差這一個 */
+    if (sock >= maxfds)
+	maxfds = sock - 1;
+#endif
+
+    list_free(cuser->ignore);
+
+#ifdef DEBUG
+    debug_user();
+#endif
+
+    xuser = mainuser;
+    if (xuser == cuser)
+    {
+	mainuser = cuser->unext;
+    }
+    else
+    {
+	do
+	{
+	    prev = xuser;
+	    xuser = xuser->unext;
+	    if (xuser == cuser)
+	    {
+		prev->unext = cuser->unext;
+		break;
+	    }
+	} while (xuser);
+    }
+
+    MYDOG;
+
+#ifdef DEBUG
+    sprintf(chatbuf, "%p", cuser);
+    logit("free cuser", chatbuf);
+#endif
+
+    free(cuser);
+
+#ifdef  DEBUG
+    logit("after", "logout");
+    debug_user();
+#endif
+
+#if 0
+    next = cuser->next;
+    prev = cuser->prev;
+    prev->next = next;
+    if (next)
+	next->prev = prev;
+
+    if (cuser)
+	free(cuser);
+    MYDOG;
+
+#endif
+
+    totaluser--;
+}
+
+
+static void
+print_user_counts(cuser)
+    ChatUser *cuser;
+{
+    ChatRoom *room;
+    int num, userc, suserc, roomc, number;
+
+    userc = suserc = roomc = 0;
+
+    room = &mainroom;
+    do
+    {
+	MYDOG;
+
+	num = room->occupants;
+	if (SECRET(room))
+	{
+	    suserc += num;
+	    if (CHATSYSOP(cuser))
+		roomc++;
+	}
+	else
+	{
+	    userc += num;
+	    roomc++;
+	}
+    } while((room = room->next));
+
+    number = (cuser->clitype) ? MSG_MOTD : MSG_MESSAGE;
+
+    sprintf(chatbuf,
+	    "☉ 歡迎光臨【批踢踢茶藝館】，目前開了 %d 間包廂", roomc);
+    send_to_user(cuser, chatbuf, 0, number);
+
+    sprintf(chatbuf, "☉ 共有 %d 人來擺\龍門陣", userc);
+    if (suserc)
+	sprintf(chatbuf + strlen(chatbuf), " [%d 人在秘密聊天室]", suserc);
+    send_to_user(cuser, chatbuf, 0, number);
+}
+
+
+static int
+login_user(cu, msg)
+    ChatUser *cu;
+    char *msg;
+{
+    int utent;
+
+    char *level;
+    char *userid;
+    char *chatid;
+    struct sockaddr_in from;
+    int fromlen;
+    struct hostent *hp;
+
+
+    ACCT acct;
+    char buf[20];
+
+    /*
+     * Thor.0819: SECURED_CHATROOM : /! userid chatid passwd , userno
+     * el 在check完passwd後取得
+     */
+    /* Xshadow.0915: common client support : /-! userid chatid password */
+
+    /* 傳參數：userlevel, userid, chatid */
+
+    /* client/server 版本依據 userid 抓 .PASSWDS 判斷 userlevel */
+
+    userid = nextword(&msg);
+    chatid = nextword(&msg);
+
+
+#ifdef  DEBUG
+    logit("ENTER", userid);
+#endif
+    /* Thor.0730: parse space before passwd */
+    level = msg;
+
+    /* Thor.0813: 跳過一空格即可, 因為反正如果chatid有空格, 密碼也不對 */
+    /* 就算密碼對, 也不會怎麼樣:p */
+    /* 可是如果密碼第一個字是空格, 那跳太多空格會進不來... */
+    if (*level == ' ')
+	level++;
+
+    /* Thor.0729: load acct */
+    if (!*userid || (acct_load(&acct, userid) < 0))
+    {
+
+#ifdef  DEBUG
+	logit("noexist", chatid);
+#endif
+
+	if (cu->clitype)
+	    send_to_user(cu, "錯誤的使用者代號", 0, ERR_LOGIN_NOSUCHUSER);
+	else
+	    send_to_user(cu, CHAT_LOGIN_INVALID, 0, 0);
+
+	return -1;
+    }
+    else if(strncmp(level, acct.passwd, PASSLEN) &&
+	    !chkpasswd(acct.passwd, level))
+    {
+
+#ifdef  DEBUG
+	logit("fake", chatid);
+#endif
+
+	if (cu->clitype)
+	    send_to_user(cu, "密碼錯誤", 0, ERR_LOGIN_PASSERROR);
+	else
+	    send_to_user(cu, CHAT_LOGIN_INVALID, 0, 0);
+	return -1;
+    }
+    else
+    {
+	/* Thor.0729: if ok, read level.  */
+	sprintf(buf, "%d", acct.userlevel);
+	level = buf;
+	/* Thor.0819: read userno for client/server bbs */
+	utent = searchuser(acct.userid);
+    }
+
+    /* Thor.0819: for client/server bbs */
+/*
+  for (xuser = mainuser; xuser; xuser = xuser->unext)
+  {
+  MYDOG;
+
+  if (xuser->userno == utent)
+  {
+
+  #ifdef  DEBUG
+  logit("enter", "bogus");
+  #endif
+  if (cu->clitype)
+  send_to_user(cu, "請勿派遣分身進入聊天室 !!", 0, ERR_LOGIN_USERONLINE);
+  else
+  send_to_user(cu, CHAT_LOGIN_BOGUS, 0, 0);
+  return -1;    
+  }
+  }
+*/
+    if (!valid_chatid(chatid))
+    {
+
+#ifdef  DEBUG
+	logit("enter", chatid);
+#endif
+
+	if (cu->clitype)
+	    send_to_user(cu, "不合法的聊天室代號 !!", 0, ERR_LOGIN_NICKERROR);
+	else
+	    send_to_user(cu, CHAT_LOGIN_INVALID, 0, 0);
+	return 0;
+    }
+
+#ifdef  DEBUG
+    debug_user();
+#endif
+
+    if (cuser_by_chatid(chatid) != NULL)
+    {
+	/* chatid in use */
+
+#ifdef  DEBUG
+	logit("enter", "duplicate");
+#endif
+
+	if (cu->clitype)
+	    send_to_user(cu, "這個代號已經有人使用", 0, ERR_LOGIN_NICKINUSE);
+	else
+	    send_to_user(cu, CHAT_LOGIN_EXISTS, 0, 0);
+	return 0;
+    }
+
+    cu->userno = utent;
+    cu->uflag = atoi(level) & ~(PERM_ROOMOP | PERM_CLOAK | PERM_HANDUP | PERM_SAY);
+    /* Thor: 進來先清空ROOMOP(同PERM_CHAT), CLOAK */
+    strcpy(cu->userid, userid);
+    memcpy(cu->chatid, chatid, 8);
+    cu->chatid[8] = '\0';
+
+    /* Xshadow: 取得 client 的來源 */
+    fromlen = sizeof(from);
+    if (!getpeername(cu->sock, (struct sockaddr *) & from, &fromlen))
+    {
+	if ((hp = gethostbyaddr((char *) &from.sin_addr, sizeof(struct in_addr), from.sin_family)))
+	{
+	    strcpy(cu->lasthost, hp->h_name);
+	}
+	else
+	    strcpy(cu->lasthost, (char *) inet_ntoa(from.sin_addr));
+
+    }
+    else
+    {
+	strcpy(cu->lasthost, "[外太空]");
+    }
+
+    if (cu->clitype)
+	send_to_user(cu, "順利", 0, MSG_LOGINOK);
+    else
+	send_to_user(cu, CHAT_LOGIN_OK, 0, 0);
+
+    arrive_room(cu, &mainroom);
+
+    send_to_user(cu, "", 0, MSG_MOTDSTART);
+    print_user_counts(cu);
+    send_to_user(cu, "", 0, MSG_MOTDEND);
+
+#ifdef  DEBUG
+    logit("enter", "OK");
+#endif
+
+    return 0;
+}
+
+
+static void
+chat_act(cu, msg)
+    ChatUser *cu;
+    char *msg;
+{
+    if (*msg && (!RHANDUP(cu->room) || SAY(cu) || ROOMOP(cu)))
+    {
+	sprintf(chatbuf, "%s %s", cu->chatid, msg);
+	send_to_room(cu->room, chatbuf, cu->userno, MSG_MESSAGE);
+    }
+}
+
+
+static void
+chat_ignore(cu, msg)
+    ChatUser *cu;
+    char *msg;
+{
+
+    if (RESTRICTED(cu))
+    {
+	strcpy(chatbuf, "※ 您沒有 ignore 別人的權利");
+    }
+    else
+    {
+	char *ignoree;
+
+	ignoree = nextword(&msg);
+	if (*ignoree)
+	{
+	    ChatUser *xuser;
+
+	    xuser = cuser_by_userid(ignoree);
+
+	    if (xuser == NULL)
+	    {
+
+		sprintf(chatbuf, msg_no_such_id, ignoree);
+
+#if 0
+		sprintf(chatbuf, "◆ 談天室現在沒有 [%s] 這號人物", ignoree);
+#endif
+	    }
+	    else if (xuser == cu || CHATSYSOP(xuser) ||
+		     (ROOMOP(xuser) && (xuser->room == cu->room)))
+	    {
+		sprintf(chatbuf, "◆ 不可以 ignore [%s]", ignoree);
+	    }
+	    else
+	    {
+
+		if (list_belong(cu->ignore, xuser->userno))
+		{
+		    sprintf(chatbuf, "※ %s 已經被凍結了", xuser->chatid);
+		}
+		else
+		{
+		    list_add(&(cu->ignore), xuser);
+		    sprintf(chatbuf, "◆ 將 [%s] 打入冷宮了 :p", xuser->chatid);
+		}
+	    }
+	}
+	else
+	{
+	    UserList *list;
+
+	    if((list = cu->ignore))
+	    {
+		int len;
+		char buf[16];
+
+		send_to_user(cu, "◆ 這些人被打入冷宮了：", 0, MSG_MESSAGE);
+		len = 0;
+		do
+		{
+		    sprintf(buf, "%-13s", list->userid);
+		    strcpy(chatbuf + len, buf);
+		    len += 13;
+		    if (len >= 78)
+		    {
+			send_to_user(cu, chatbuf, 0, MSG_MESSAGE);
+			len = 0;
+		    }
+		} while((list = list->next));
+
+		if (len == 0)
+		    return;
+	    }
+	    else
+	    {
+		strcpy(chatbuf, "◆ 您目前並沒有 ignore 任何人");
+	    }
+	}
+    }
+
+    send_to_user(cu, chatbuf, 0, MSG_MESSAGE);
+}
+
+
+static void
+chat_unignore(cu, msg)
+    ChatUser *cu;
+    char *msg;
+{
+    char *ignoree;
+
+    ignoree = nextword(&msg);
+
+    if (*ignoree)
+    {
+	sprintf(chatbuf, (list_delete(&(cu->ignore), ignoree)) ?
+		"◆ [%s] 不再被你冷落了" :
+		"◆ 您並未 ignore [%s] 這號人物", ignoree);
+    }
+    else
+    {
+	strcpy(chatbuf, "◆ 請指明 user ID");
+    }
+    send_to_user(cu, chatbuf, 0, MSG_MESSAGE);
+}
+
+
+static void
+chat_join(cu, msg)
+    ChatUser *cu;
+    char *msg;
+{
+    if (RESTRICTED(cu))
+    {
+	send_to_user(cu, "※ 您沒有加入其他聊天室的權限", 0, MSG_MESSAGE);
+    }
+    else
+    {
+	char *roomid = nextword(&msg);
+
+	if (*roomid)
+	    enter_room(cu, roomid, msg);
+	else
+	    send_to_user(cu, "※ 請指定聊天室的名字", 0, MSG_MESSAGE);
+    }
+}
+
+
+static void
+chat_kick(cu, msg)
+    ChatUser *cu;
+    char *msg;
+{
+    char *twit;
+    ChatUser *xuser;
+    ChatRoom *room;
+
+    if (!ROOMOP(cu))
+    {
+	send_to_user(cu, msg_not_op, 0, MSG_MESSAGE);
+	return;
+    }
+
+    twit = nextword(&msg);
+    xuser = cuser_by_chatid(twit);
+
+    if (xuser == NULL)
+    {
+	sprintf(chatbuf, msg_no_such_id, twit);
+	send_to_user(cu, chatbuf, 0, MSG_MESSAGE);
+	return;
+    }
+
+    room = cu->room;
+    if (room != xuser->room || CLOAK(xuser))
+    {                             /* Thor: 聊天室隱身術 */
+	sprintf(chatbuf, msg_not_here, twit);
+	send_to_user(cu, chatbuf, 0, MSG_MESSAGE);
+	return;
+    }
+
+    if (CHATSYSOP(xuser))
+    {                             /* Thor: 踢不走 CHATSYSOP */
+	sprintf(chatbuf, "◆ 不可以 kick [%s]", twit);
+	send_to_user(cu, chatbuf, 0, MSG_MESSAGE);
+	return;
+    }
+
+    exit_room(xuser, EXIT_KICK, (char *) NULL);
+
+    if (room == &mainroom)
+	logout_user(xuser);
+    else
+	enter_room(xuser, MAIN_NAME, (char *) NULL);
+}
+
+
+static void
+chat_makeop(cu, msg)
+    ChatUser *cu;
+    char *msg;
+{
+    char *newop;
+    ChatUser *xuser;
+    ChatRoom *room;
+
+    if (!ROOMOP(cu))
+    {
+	send_to_user(cu, msg_not_op, 0, MSG_MESSAGE);
+	return;
+    }
+
+    newop = nextword(&msg);
+    xuser = cuser_by_chatid(newop);
+
+    if (xuser == NULL)
+    {
+	sprintf(chatbuf, msg_no_such_id, newop);
+	send_to_user(cu, chatbuf, 0, MSG_MESSAGE);
+	return;
+    }
+
+    if (cu == xuser)
+    {
+	sprintf(chatbuf, "※ 您早就已經是 Op 了啊");
+	send_to_user(cu, chatbuf, 0, MSG_MESSAGE);
+	return;
+    }
+
+    room = cu->room;
+
+    if (room != xuser->room || CLOAK(xuser))
+    {                             /* Thor: 聊天室隱身術 */
+	sprintf(chatbuf, msg_not_here, xuser->chatid);
+	send_to_user(cu, chatbuf, 0, MSG_MESSAGE);
+	return;
+    }
+
+    cu->uflag &= ~PERM_ROOMOP;
+    xuser->uflag |= PERM_ROOMOP;
+
+    user_changed(cu);
+    user_changed(xuser);
+
+    sprintf(chatbuf, "※ %s 將 Op 權力轉移給 %s",
+	    cu->chatid, xuser->chatid);
+    if (!CLOAK(cu))               /* Thor: 聊天室隱身術 */
+	send_to_room(room, chatbuf, 0, MSG_MESSAGE, MSG_MESSAGE);
+}
+
+
+
+static void
+chat_invite(cu, msg)
+    ChatUser *cu;
+    char *msg;
+{
+    char *invitee;
+    ChatUser *xuser;
+    ChatRoom *room;
+    UserList **list;
+
+    if (!ROOMOP(cu))
+    {
+	send_to_user(cu, msg_not_op, 0, MSG_MESSAGE);
+	return;
+    }
+
+    invitee = nextword(&msg);
+    xuser = cuser_by_chatid(invitee);
+    if (xuser == NULL)
+    {
+	sprintf(chatbuf, msg_no_such_id, invitee);
+	send_to_user(cu, chatbuf, 0, MSG_MESSAGE);
+	return;
+    }
+
+    room = cu->room;              /* Thor: 是否要 check room 是否 NULL ? */
+    list = &(room->invite);
+
+    if (list_belong(*list, xuser->userno))
+    {
+	sprintf(chatbuf, "※ %s 已經接受過邀請了", xuser->chatid);
+	send_to_user(cu, chatbuf, 0, MSG_MESSAGE);
+	return;
+    }
+    list_add(list, xuser);
+
+    sprintf(chatbuf, "※ %s 邀請您到 [%s] 聊天室",
+	    cu->chatid, room->name);
+    send_to_user(xuser, chatbuf, 0, MSG_MESSAGE); /* Thor: 要不要可以 ignore? */
+    sprintf(chatbuf, "※ %s 收到您的邀請了", xuser->chatid);
+    send_to_user(cu, chatbuf, 0, MSG_MESSAGE);
+}
+
+
+static void
+chat_broadcast(cu, msg)
+    ChatUser *cu;
+    char *msg;
+{
+    if (!CHATSYSOP(cu))
+    {
+	send_to_user(cu, "※ 您沒有在聊天室廣播的權力!", 0, MSG_MESSAGE);
+	return;
+    }
+    if (*msg == '\0')
+    {
+	send_to_user(cu, "※ 請指定廣播內容", 0, MSG_MESSAGE);
+	return;
+    }
+    sprintf(chatbuf, "※ " BBSNAME "談天室廣播中 [%s].....",
+	    cu->chatid);
+    send_to_room(ROOM_ALL, chatbuf, 0, MSG_MESSAGE);
+    sprintf(chatbuf, "◆ %s", msg);
+    send_to_room(ROOM_ALL, chatbuf, 0, MSG_MESSAGE);
+}
+
+
+static void
+chat_goodbye(cu, msg)
+    ChatUser *cu;
+    char *msg;
+{
+    exit_room(cu, EXIT_LOGOUT, msg);
+    /* Thor: 要不要加 logout_user(cu) ? */
+}
+
+
+/* --------------------------------------------- */
+/* MUD-like social commands : action             */
+/* --------------------------------------------- */
+
+struct ChatAction
+{
+    char *verb;                   /* 動詞 */
+    char *chinese;                /* 中文翻譯 */
+    char *part1_msg;              /* 介詞 */
+    char *part2_msg;              /* 動作 */
+};
+
+
+static ChatAction party_data[] =
+{
+    {"aluba", "阿魯巴", "把", "架上柱子阿魯巴!!"},
+    {"aodre", "景仰", "對", "的景仰有如滔滔江水,連綿不絕……"},
+    {"bearhug", "熱擁", "熱情的擁抱", ""},
+    {"blade", "一刀", "一刀啟程把", "送上西天"},
+    {"bless", "祝福", "祝福", "心想事成"},
+    {"board", "主機板", "把", "抓去跪主機板"},
+    {"bokan", "氣功\", "雙掌微合，蓄勢待發……突然間，電光乍現，對", "使出了Ｂo--Ｋan！"},
+  {"bow", "鞠躬", "畢躬畢敬的向", "鞠躬"},
+  {"box", "幕之內", "開始輪擺\式移位，對", "作肝臟攻擊"},
+  {"boy", "平底鍋", "從背後拿出了平底鍋，把", "敲昏了"},
+  {"bye", "掰掰", "向", "說掰掰!!"},
+  {"call", "呼喚", "大聲的呼喚,啊~~", "啊~~~你在哪裡啊啊啊啊~~~~"},
+  {"caress", "輕撫", "輕輕的撫摸著", ""},
+  {"clap", "鼓掌", "向", "熱烈鼓掌"},
+  {"claw", "抓抓", "從貓咪樂園借了隻貓爪，把", "抓得死去活來"},
+  {"comfort", "安慰", "溫言安慰", ""},
+  {"cong", "恭喜", "從背後拿出了拉炮，呯！呯！恭喜", ""},
+  {"cpr", "口對口", "對著", "做口對口人工呼吸"},
+  {"cringe", "乞憐", "向", "卑躬屈膝，搖尾乞憐"},
+  {"cry", "大哭", "向", "嚎啕大哭"},
+  {"dance", "跳舞", "拉了", "的手翩翩起舞"  },
+  {"destroy", "毀滅", "祭起了『極大毀滅咒文』，轟向", ""},
+  {"dogleg", "狗腿", "對", "狗腿"},
+  {"drivel", "流口水", "對著", "流口水"},
+  {"envy", "羨慕", "向", "流露出羨慕的眼光"},
+  {"eye", "送秋波", "對", "頻送秋波"},
+  {"fire", "銬問", "拿著火紅的鐵棒走向", ""},
+  {"forgive", "原諒", "接受道歉，原諒了", ""},
+  {"french", "法式吻", "把舌頭伸到", "喉嚨裡∼∼∼哇！一個浪漫的法國氏深吻"},
+  {"giggle", "傻笑", "對著", "傻傻的呆笑"},
+  {"glue", "補心", "用三秒膠，把", "的心黏了起來"},
+  {"goodbye", "告別", "淚\眼汪汪的向", "告別"},
+  {"grin", "奸笑", "對", "露出邪惡的笑容"},
+  {"growl", "咆哮", "對", "咆哮不已"},
+  {"hand", "握手", "跟", "握手"},
+  {"hide", "躲", "躲在", "背後"},
+  {"hospitl", "送醫院", "把", "送進醫院"},
+  {"hug", "擁抱", "輕輕地擁抱", ""},
+  {"hrk", "昇龍拳", "沉穩了身形，匯聚了內勁，對", "使出了一記Ｈo--Ｒyu--Ｋan！！！"},
+  {"jab", "戳人", "溫柔的戳著", ""},
+  {"judo", "過肩摔", "抓住了", "的衣襟，轉身……啊，是一記過肩摔！"},
+  {"kickout", "踢", "用大腳把", "踢到山下去了"},
+  {"kick", "踢人", "把", "踢的死去活來"},
+  {"kiss", "輕吻", "輕吻", "的臉頰"},
+  {"laugh", "嘲笑", "大聲嘲笑", ""},
+  {"levis", "給我", "說：給我", "！其餘免談！"},
+  {"lick", "舔", "狂舔", ""},
+  {"lobster", "壓制", "施展逆蝦形固定，把", "壓制在地板上"},
+  {"love", "表白", "對", "深情的表白"},
+  {"marry", "求婚", "捧著九百九十九朵玫瑰向", "求婚"},
+  {"no", "不要啊", "拼命對著", "搖頭~~~~不要啊~~~~"},
+  {"nod", "點頭", "向", "點頭稱是"},
+  {"nudge", "頂肚子", "用手肘頂", "的肥肚子"},
+  {"pad", "拍肩膀", "輕拍", "的肩膀"},
+  {"pettish", "撒嬌", "跟", "嗲聲嗲氣地撒嬌"},
+  {"pili", "霹靂", "使出 君子風 天地根 般若懺 三式合一打向", "~~~~~~"},
+  {"pinch", "擰人", "用力的把", "擰的黑青"},
+  {"roll", "打滾", "放出多爾袞的音樂,", "在地上滾來滾去"},
+  {"protect", "保護", "保護著", ""},
+  {"pull", "拉", "死命地拉住", "不放"},
+  {"punch", "揍人", "狠狠揍了", "一頓"},
+  {"rascal", "耍賴", "跟", "耍賴"},
+  {"recline", "入懷", "鑽到", "的懷裡睡著了……"},
+  {"respond", "負責", "安慰", "說：『不要哭，我會負責的……』"},
+  {"shrug", "聳肩", "無奈地向", "聳了聳肩膀"},
+  {"sigh", "歎氣", "對", "歎了一口氣"},
+  {"slap", "打耳光", "啪啪的巴了", "一頓耳光"},
+  {"smooch", "擁吻", "擁吻著", ""},
+  {"snicker", "竊笑", "嘿嘿嘿..的對", "竊笑"},
+  {"sniff", "不屑", "對", "嗤之以鼻"},
+  {"spank", "打屁屁", "用巴掌打", "的臀部"},
+  {"squeeze", "緊擁", "緊緊地擁抱著", ""},
+  {"sysop", "召喚", "叫出了批踢踢，把", "踩扁了！"},
+  {"thank", "感謝", "向", "感謝得五體投地"},
+  {"tickle", "搔癢", "咕嘰!咕嘰!搔", "的癢"},
+  {"wake", "搖醒", "輕輕地把", "搖醒"},
+  {"wave", "揮手", "對著", "拼命的搖手"},
+  {"welcome", "歡迎", "歡迎", "進來八卦一下"},
+  {"what", "什麼", "說：『", "哩公瞎密哇隴聽某?？?﹖?』"},
+  {"whip", "鞭子", "手上拿著蠟燭，用鞭子痛打", ""},
+  {"wink", "眨眼", "對", "神秘的眨眨眼睛"},
+  {"zap", "猛攻", "對", "瘋狂的攻擊"},
+  {NULL, NULL, NULL, NULL}
+};
+
+static int
+chicken_action(cu, cmd, party)
+  ChatUser *cu;
+  char *cmd;
+  char *party;
+{
+return 0;
+}
+static int
+party_action(cu, cmd, party)
+  ChatUser *cu;
+  char *cmd;
+  char *party;
+{
+    ChatAction *cap;
+    char *verb;
+
+    for (cap = party_data; (verb = cap->verb); cap++)
+    {
+	MYDOG;
+
+	if (str_equal(cmd, verb))
+	{
+	    if (*party == '\0')
+	    {
+		party = "大家";
+	    }
+	    else
+	    {
+		ChatUser *xuser;
+
+		xuser = fuzzy_cuser_by_chatid(party);
+		if (xuser == NULL)
+		{                       /* Thor.0724: 用 userid也嘛通 */
+		    xuser = cuser_by_userid(party);
+		}
+
+		if (xuser == NULL)
+		{
+		    sprintf(chatbuf, msg_no_such_id, party);
+		    send_to_user(cu, chatbuf, 0, MSG_MESSAGE);
+		    return 0;
+		}
+		else if (xuser == FUZZY_USER)
+		{
+		    sprintf(chatbuf, "※ 請指明聊天代號");
+		    send_to_user(cu, chatbuf, 0, MSG_MESSAGE);
+		    return 0;
+		}
+		else if (cu->room != xuser->room || CLOAK(xuser))
+		{
+		    sprintf(chatbuf, msg_not_here, party);
+		    send_to_user(cu, chatbuf, 0, MSG_MESSAGE);
+		    return 0;
+		}
+		else
+		{
+		    party = xuser->chatid;
+		}
+	    }
+	    sprintf(chatbuf, "%s %s %s %s",
+		    cu->chatid, cap->part1_msg, party, cap->part2_msg);
+	    send_to_room(cu->room, chatbuf, cu->userno, MSG_MESSAGE);
+	    return 0;                 /* Thor: cu->room 是否為 NULL? */
+	}
+    }
+    return 1;
+}
+
+
+/* --------------------------------------------- */
+/* MUD-like social commands : speak              */
+/* --------------------------------------------- */
+
+
+static ChatAction speak_data[] =
+{
+
+    {
+	"ask", "詢問", "問", NULL
+    },
+    {
+	"chant", "歌頌", "高聲歌頌", NULL
+    },
+    {
+	"cheer", "喝采", "喝采", NULL
+    },
+    {
+	"chuckle", "輕笑", "輕笑", NULL
+    },
+    {
+	"curse", "暗幹", "暗幹", NULL
+    },
+    /* {"curse", "咒罵", NULL}, */
+    {
+	"demand", "要求", "要求", NULL
+    },
+    {
+	"frown", "皺眉頭", "蹙眉", NULL
+    },
+    {
+	"groan", "呻吟", "呻吟", NULL
+    },
+    {
+	"grumble", "發牢騷", "發牢騷", NULL
+    },
+    {
+	"guitar", "彈唱", "邊彈著吉他，邊唱著", NULL
+    },
+    /* {"helpme", "呼救","大聲呼救",NULL}, */
+    {
+	"hum", "喃喃", "喃喃自語", NULL
+    },
+    {
+	"moan", "怨嘆", "怨嘆", NULL
+    },
+    {
+	"notice", "強調", "強調", NULL
+    },
+    {
+	"order", "命令", "命令", NULL
+    },
+    {
+	"ponder", "沈思", "沈思", NULL
+    },
+    {
+	"pout", "噘嘴", "噘著嘴說", NULL
+    },
+    {
+	"pray", "祈禱", "祈禱", NULL
+    },
+    {
+	"request", "懇求", "懇求", NULL
+    },
+    {
+	"shout", "大罵", "大罵", NULL
+    },
+    {
+	"sing", "唱歌", "唱歌", NULL
+    },
+    {
+	"smile", "微笑", "微笑", NULL
+    },
+    {
+	"smirk", "假笑", "假笑", NULL
+    },
+    {
+	"swear", "發誓", "發誓", NULL
+    },
+    {
+	"tease", "嘲笑", "嘲笑", NULL
+    },
+    {
+	"whimper", "嗚咽", "嗚咽的說", NULL
+    },
+    {
+	"yawn", "哈欠", "邊打哈欠邊說", NULL
+    },
+    {
+	"yell", "大喊", "大喊", NULL
+    },
+    {
+	NULL, NULL, NULL, NULL
+    }
+};
+
+
+static int
+speak_action(cu, cmd, msg)
+    ChatUser *cu;
+    char *cmd;
+    char *msg;
+{
+    ChatAction *cap;
+    char *verb;
+
+    for (cap = speak_data; (verb = cap->verb); cap++)
+    {
+	MYDOG;
+
+	if (str_equal(cmd, verb))
+	{
+	    sprintf(chatbuf, "%s %s： %s",
+		    cu->chatid, cap->part1_msg, msg);
+	    send_to_room(cu->room, chatbuf, cu->userno, MSG_MESSAGE);
+	    return 0;                 /* Thor: cu->room 是否為 NULL? */
+	}
+    }
+    return 1;
+}
+
+
+/* -------------------------------------------- */
+/* MUD-like social commands : condition          */
+/* -------------------------------------------- */
+
+
+static ChatAction condition_data[] =
+{
+    {
+	"applaud", "拍手", "啪啪啪啪啪啪啪....", NULL
+    },
+    {
+	"ayo", "唉呦喂", "唉呦喂~~~", NULL
+    },
+    {
+	"back", "坐回來", "回來坐正繼續奮戰", NULL
+    },
+    {
+	"blood", "在血中", "倒在血泊之中", NULL
+    },
+    {
+	"blush", "臉紅", "臉都紅了", NULL
+    },
+    {
+	"broke", "心碎", "的心破碎成一片一片的", NULL
+    },                            /* Thor.0731:應觀眾要求 */
+    /* {"bokan", "Bo Kan! Bo Kan!", NULL}, */
+    {
+	"careles", "沒人理", "嗚∼∼都沒有人理我 :~~~~", NULL
+    },
+    {
+	"chew", "嗑瓜子", "很悠閒的嗑起瓜子來了", NULL
+    },
+    {
+	"climb", "爬山", "自己慢慢爬上山來……", NULL
+    },
+    {
+	"cold", "感冒了", "感冒了,媽媽不讓我出去玩 :~~~(", NULL
+    },
+    {
+	"cough", "咳嗽", "咳了幾聲", NULL
+    },
+    {
+	"die", "暴斃", "當場暴斃", NULL
+    },
+    {
+	"faint", "昏倒", "當場昏倒", NULL
+    },
+    {
+	"flop", "香蕉皮", "踩到香蕉皮... 滑倒！", NULL
+    },
+    {
+	"fly", "飄飄然", "飄飄然", NULL
+    },
+    {
+	"frown", "蹙眉", "蹙眉", NULL
+    },
+    {
+	"gold", "拿金牌", "唱著：『金ㄍㄠˊ金ㄍㄠˊ  出國比賽! 得冠軍，拿金牌，光榮倒鄧來！』", NULL
+    },
+    {
+	"gulu", "肚子餓", "的肚子發出咕嚕~~~咕嚕~~~的聲音", NULL
+    },
+    {
+	"haha", "哇哈哈", "哇哈哈哈.....^o^", NULL
+    },
+    /* {"haha", "大笑","哇哈哈哈哈哈哈哈哈~~~~!!!!!", NULL}, */
+    {
+	"helpme", "求救", "大喊~~~救命啊~~~~", NULL
+    },
+    {
+	"hoho", "呵呵笑", "呵呵呵笑個不停", NULL
+    },
+    {
+	"happy", "高興", "高興得在地上打滾", NULL
+    },
+    /* {"happy", "高興", "ＹＡ！ *^_^*", NULL}, */
+    /* {"happy", "", "r-o-O-m....聽了真爽！", NULL}, */
+    /* {"hurricane", "Ｈｏ---Ｒｙｕ--Ｋａｎ！！！", NULL}, */
+    {
+	"idle", "呆住了", "呆住了", NULL
+    },
+    {
+	"jacky", "晃晃", "痞子般的晃來晃去", NULL
+    },
+
+#if 0
+    /* Thor.0729: 不知其意 */
+    {
+	"lag", "網路慢", "lllllllaaaaaaaaaaaagggggggggggggg.................", NULL
+    },
+#endif
+
+    {
+	"luck", "幸運", "哇！福氣啦！", NULL
+    },
+    {
+	"macarn", "一種舞", "開始跳起了ＭaＣaＲeＮa∼∼∼∼", NULL
+    },
+    {
+	"miou", "喵喵", "喵喵口苗口苗∼∼∼∼∼", NULL
+    },
+    {
+	"mouth", "扁嘴", "扁嘴中!!", NULL
+    },
+    {
+	"nani", "怎麼會", "：奈ㄝ啊捏??", NULL
+    },
+    {
+	"nose", "流鼻血", "流鼻血", NULL
+    },
+    {
+	"puke", "嘔吐", "嘔吐中", NULL
+    },
+    /* {"puke", "真噁心，我聽了都想吐", NULL}, */
+    {
+	"rest", "休息", "休息中，請勿打擾", NULL
+    },
+    {
+	"reverse", "翻肚", "翻肚", NULL
+    },
+    {
+	"room", "開房間", "r-o-O-m-r-O-Ｏ-Mmm-rRＲ........", NULL
+    },
+    {
+	"shake", "搖頭", "搖了搖頭", NULL
+    },
+    {
+	"sleep", "睡著", "趴在鍵盤上睡著了，口水流進鍵盤，造成當機！", NULL
+    },
+    /* {"sleep", "Zzzzzzzzzz，真無聊，都快睡著了", NULL}, */
+    {
+	"so", "就醬子", "就醬子!!", NULL
+    },
+    {
+	"sorry", "道歉", "嗚啊!!我對不起大家,我對不起國家社會~~~~~~嗚啊~~~~~", NULL
+    },
+    {
+	"story", "講古", "開始講古了", NULL
+    },
+    {
+	"strut", "搖擺\走", "大搖大擺\地走", NULL
+    },
+    {
+	"suicide", "自殺", "自殺", NULL
+    },
+    {
+	"tea", "泡茶", "泡了壺好茶", NULL
+    },
+    {
+	"think", "思考", "歪著頭想了一下", NULL
+    },
+    {
+	"tongue", "吐舌", "吐了吐舌頭", NULL
+    },
+    {
+	"wall", "撞牆", "跑去撞牆", NULL
+    },
+    {
+	"wawa", "哇哇", "哇哇哇~~~~~!!!!!  ~~~>_<~~~", NULL
+    },
+    /* {"wawa","哇哇哇......>_<",NULL},  */
+    {
+	"www", "汪汪", "汪汪汪!!!", NULL
+    },
+    {
+	"zzz", "打呼", "呼嚕~~~~ZZzZzｚＺZZzzZzzzZZ...", NULL
+    },
+
+    {
+	NULL, NULL, NULL, NULL
+    }
+};
+
+
+static int
+condition_action(cu, cmd)
+    ChatUser *cu;
+    char *cmd;
+{
+    ChatAction *cap;
+    char *verb;
+
+    for (cap = condition_data; (verb = cap->verb); cap++)
+    {
+	MYDOG;
+
+	if (str_equal(cmd, verb))
+	{
+	    sprintf(chatbuf, "%s %s",
+		    cu->chatid, cap->part1_msg);
+	    send_to_room(cu->room, chatbuf, cu->userno, MSG_MESSAGE);
+	    return 1;                 /* Thor: cu->room 是否為 NULL? */
+	}
+    }
+    return 0;
+}
+
+
+/* --------------------------------------------- */
+/* MUD-like social commands : help               */
+/* --------------------------------------------- */
+
+
+static char *dscrb[] =
+{
+    "【 Verb + Nick：   動詞 + 對方名字 】   例：//kick piggy",
+    "【 Verb + Message：動詞 + 要說的話 】   例：//sing 天天天藍",
+    "【 Verb：動詞 】    ↑↓：舊話重提", NULL
+};
+ChatAction *catbl[] =
+{
+    party_data, speak_data, condition_data, NULL
+};
+
+static void
+chat_partyinfo(cu, msg)
+    ChatUser *cu;
+    char *msg;
+{
+    if (!common_client_command)
+	return;                     /* only allow common client to retrieve it */
+
+    sprintf(chatbuf, "3 動作  交談  狀態");
+    send_to_user(cu, chatbuf, 0, MSG_PARTYINFO);
+}
+
+static void
+chat_party(cu, msg)
+    ChatUser *cu;
+    char *msg;
+{
+    int kind, i;
+    ChatAction *cap;
+
+    if (!common_client_command)
+	return;
+
+    kind = atoi(nextword(&msg));
+    if (kind < 0 || kind > 2)
+	return;
+
+    sprintf(chatbuf, "%d  %s", kind, kind == 2 ? "I" : "");
+
+    /* Xshadow: 只有 condition 才是 immediate mode */
+    send_to_user(cu, chatbuf, 0, MSG_PARTYLISTSTART);
+
+    cap = catbl[kind];
+    for (i = 0; cap[i].verb; i++)
+    {
+	sprintf(chatbuf, "%-10s %-20s", cap[i].verb, cap[i].chinese);
+	/* for (j=0;j<1000000;j++); */
+	send_to_user(cu, chatbuf, 0, MSG_PARTYLIST);
+    }
+
+    sprintf(chatbuf, "%d", kind);
+    send_to_user(cu, chatbuf, 0, MSG_PARTYLISTEND);
+}
+
+
+#define SCREEN_WIDTH    80
+#define MAX_VERB_LEN    8
+#define VERB_NO         10
+
+static void
+view_action_verb(cu, cmd)       /* Thor.0726: 新加動詞分類顯示 */
+    register ChatUser *cu;
+    char cmd;
+{
+    register int i;
+    register char *p, *q, *data, *expn;
+    register ChatAction *cap;
+
+    send_to_user(cu, "/c", 0, MSG_CLRSCR);
+
+    data = chatbuf;
+
+    if (cmd < '1' || cmd > '3')
+    {                             /* Thor.0726: 寫得不好, 想辦法改進... */
+	for (i = 0; (p = dscrb[i]); i++)
+	{
+	    sprintf(data, "  [//]help %d          - MUD-like 社交動詞   第 %d 類", i + 1, i + 1);
+	    MYDOG;
+	    send_to_user(cu, data, 0, MSG_MESSAGE);
+	    send_to_user(cu, p, 0, MSG_MESSAGE);
+	    send_to_user(cu, " ", 0, MSG_MESSAGE);    /* Thor.0726: 換行, 需要 " "
+						       * 嗎? */
+	}
+    }
+    else
+    {
+	i = cmd - '1';
+
+	send_to_user(cu, dscrb[i], 0, MSG_MESSAGE);
+
+	expn = chatbuf + 100;       /* Thor.0726: 應該不會overlap吧? */
+
+	*data = '\0';
+	*expn = '\0';
+
+	cap = catbl[i];
+
+	for (i = 0; (p = cap[i].verb); i++)
+	{
+	    MYDOG;
+	    q = cap[i].chinese;
+
+	    strcat(data, p);
+	    strcat(expn, q);
+
+	    if (((i + 1) % VERB_NO) == 0)
+	    {
+		send_to_user(cu, data, 0, MSG_MESSAGE);
+		send_to_user(cu, expn, 0, MSG_MESSAGE); /* Thor.0726: 顯示中文註解 */
+		*data = '\0';
+		*expn = '\0';
+	    }
+	    else
+	    {
+		strncat(data, "        ", MAX_VERB_LEN - strlen(p));
+		strncat(expn, "        ", MAX_VERB_LEN - strlen(q));
+	    }
+	}
+	if (i % VERB_NO)
+	{
+	    send_to_user(cu, data, 0, MSG_MESSAGE);
+	    send_to_user(cu, expn, 0, MSG_MESSAGE);   /* Thor.0726: 顯示中文註解 */
+	}
+    }
+    /* send_to_user(cu, " ",0); *//* Thor.0726: 換行, 需要 " " 嗎? */
+}
+
+void view_chicken_help(cu)       /* Ptt: 鬥雞程式 的help */
+    register ChatUser *cu;
+{
+
+}
+
+/* ----------------------------------------------------- */
+/* chat user service routines                            */
+/* ----------------------------------------------------- */
+
+
+static ChatCmd chatcmdlist[] =
+{
+    {"act", chat_act, 0},
+    {"bye", chat_goodbye, 0},
+    {"chatroom", chat_chatroom, 1}, /* Xshadow: for common client */
+    {"clear", chat_clear, 0},
+    {"cloak", chat_cloak, 2},
+    {"date", chat_date, 0},
+    {"flags", chat_setroom, 0},
+    {"help", chat_help, 0},
+    {"ignore", chat_ignore, 1},
+    {"invite", chat_invite, 0},
+    {"join", chat_join, 0},
+    {"kick", chat_kick, 1},
+    {"msg", chat_private, 0},
+    {"nick", chat_nick, 0},
+    {"operator", chat_makeop, 0},
+    {"party", chat_party, 1},       /* Xshadow: party data for common client */
+    {"partyinfo", chat_partyinfo, 1},       /* Xshadow: party info for common
+					   * client */
+
+    {"query", chat_query, 0},
+
+    {"room", chat_list_rooms, 0},
+    {"unignore", chat_unignore, 1},
+    {"whoin", chat_list_by_room, 1},
+    {"wall", chat_broadcast, 2},
+
+    {"who", chat_map_chatids_thisroom, 0},
+    {"list", chat_list_users, 0},
+    {"topic", chat_topic, 1},
+    {"version", chat_version, 1},
+
+    {NULL, NULL, 0}
+};
+
+/* Thor: 0 不用 exact, 1 要 exactly equal, 2 秘密指令 */
+
+
+static int
+command_execute(cu)
+    ChatUser *cu;
+{
+    char *cmd, *msg;
+    ChatCmd *cmdrec;
+    int match, ch;
+
+    msg = cu->ibuf;
+    match = *msg;
+
+    /* Validation routine */
+
+    if (cu->room == NULL)
+    {
+	/* MUST give special /! or /-! command if not in the room yet */
+
+	if (match == '/' && ((ch = msg[1]) == '!' || (ch == '-' && msg[2] == '!')))
+	{
+	    cu->clitype = (ch == '-') ? 1 : 0;
+	    return (login_user(cu, msg + 2 + cu->clitype));
+	}
+	else
+	    return -1;
+    }
+
+    /* If not a /-command, it goes to the room. */
+
+    if (match != '/')
+    {
+	if (match)
+	{
+	    char buf[16];
+
+	    sprintf(buf, "%s:", cu->chatid);
+	    sprintf(chatbuf, "%-10s%s", buf, msg);
+	    if (!CLOAK(cu))           /* Thor: 聊天室隱身術 */
+		send_to_room(cu->room, chatbuf, cu->userno, MSG_MESSAGE);
+	    /* Thor: 要 check cu->room NULL嗎? */
+
+	}
+	return 0;
+    }
+
+    msg++;
+    cmd = nextword(&msg);
+    match = 0;
+
+    if (*cmd == '/')
+    {
+	cmd++;
+	if (!*cmd || str_equal(cmd, "help"))
+	{
+	    /* Thor.0726: 動詞分類 */
+	    cmd = nextword(&msg);
+	    view_action_verb(cu, *cmd);
+	    match = 1;
+	}
+	else if (party_action(cu, cmd, msg) == 0)
+	    match = 1;
+	else if (speak_action(cu, cmd, msg) == 0)
+	    match = 1;
+	else
+	    match = condition_action(cu, cmd);
+    }
+    else if(*cmd == '.')
+    {
+	cmd++;
+	if (!*cmd || str_equal(cmd, "help"))
+	{
+	    view_chicken_help(cu);
+	    match = 1;
+	}
+	else match = chicken_action(cu, cmd, msg);
+    }
+    else
+    {
+	char *str;
+
+	common_client_command = 0;
+	if((*cmd == '-')) {
+	    if(cu->clitype) {
+		cmd++;                  /* Xshadow: 指令從下一個字元才開始 */
+		common_client_command = 1;
+	    }
+	}
+	for(cmdrec = chatcmdlist; (str = cmdrec->cmdstr); cmdrec++)
+	{
+		MYDOG;
+
+		switch (cmdrec->exact)
+		{
+		case 1:                   /* exactly equal */
+		    match = str_equal(cmd, str);
+		    break;
+		case 2:                   /* Thor: secret command */
+		    if (CHATSYSOP(cu))
+			match = str_equal(cmd, str);
+		    break;
+		default:                  /* not necessary equal */
+		    match = str_match(cmd, str) >= 0;
+		    break;
+		}
+
+		if (match)
+		{
+		    cmdrec->cmdfunc(cu, msg);
+		    break;
+		}
+	    }
+    }
+
+    if (!match)
+    {
+	sprintf(chatbuf, "◆ 指令錯誤：/%s", cmd);
+	send_to_user(cu, chatbuf, 0, MSG_MESSAGE);
+    }
+    return 0;
+}
+
+
+/* ----------------------------------------------------- */
+/* serve chat_user's connection                          */
+/* ----------------------------------------------------- */
+
+
+static int
+cuser_serve(cu)
+    ChatUser *cu;
+{
+    register int ch, len, isize;
+    register char *str, *cmd;
+    static char buf[80];
+
+    str = buf;
+    len = recv(cu->sock, str, sizeof(buf) - 1, 0);
+    if (len <= 0)
+    {
+	/* disconnected */
+
+	exit_room(cu, EXIT_LOSTCONN, (char *) NULL);
+	return -1;
+    }
+
+#if 0
+    /* Xshadow: 將送達的資料忠實紀錄下來 */
+    memcpy(logbuf, buf, sizeof(buf));
+    for (ch = 0; ch < sizeof(buf); ch++)
+	if (!logbuf[ch])
+	    logbuf[ch] = '$';
+
+    logbuf[len + 1] = '\0';
+    logit("recv: ", logbuf);
+#endif
+
+#if 0
+    logit(cu->userid, str);
+#endif
+
+    isize = cu->isize;
+    cmd = cu->ibuf + isize;
+    while (len--)
+    {
+	MYDOG;
+
+	ch = *str++;
+
+	if (ch == '\r' || !ch)
+	    continue;
+	if (ch == '\n')
+	{
+	    *cmd = '\0';
+
+	    isize = 0;
+	    cmd = cu->ibuf;
+
+	    if (command_execute(cu) < 0)
+		return -1;
+
+	    continue;
+	}
+	if (isize < 79)
+	{
+	    *cmd++ = ch;
+	    isize++;
+	}
+    }
+    cu->isize = isize;
+    return 0;
+}
+
+
+/* ----------------------------------------------------- */
+/* chatroom server core routines                         */
+/* ----------------------------------------------------- */
+
+static int
+start_daemon()
+{
+    int fd, value;
+    char buf[80];
+    struct sockaddr_in fsin;
+    struct linger ld;
+    struct rlimit limit;
+    time_t dummy;
+    struct tm *dummy_time;
+
+    /*
+     * More idiot speed-hacking --- the first time conversion makes the C
+     * library open the files containing the locale definition and time zone.
+     * If this hasn't happened in the parent process, it happens in the
+     * children, once per connection --- and it does add up.
+     */
+
+    time(&dummy);
+    dummy_time = gmtime(&dummy);
+    dummy_time = localtime(&dummy);
+    strftime(buf, 80, "%d/%b/%Y:%H:%M:%S", dummy_time);
+
+    /* --------------------------------------------------- */
+    /* speed-hacking DNS resolve                           */
+    /* --------------------------------------------------- */
+
+    gethostname(buf, sizeof(buf));
+
+    /* Thor: 萬一server尚未接受connection, 就回去的話, client 第一次會進入失敗 */
+    /* 所以移至 listen 後 */
+
+    /* --------------------------------------------------- */
+    /* detach daemon process                               */
+    /* --------------------------------------------------- */
+
+    close(0);
+    close(1);
+    close(2);
+
+    if (fork())
+	exit(0);
+
+    chdir(BBSHOME);
+
+    setsid();
+
+    /* --------------------------------------------------- */
+    /* adjust the resource limit                           */
+    /* --------------------------------------------------- */
+
+    getrlimit(RLIMIT_NOFILE, &limit);
+    limit.rlim_cur = limit.rlim_max;
+    setrlimit(RLIMIT_NOFILE, &limit);
+
+#if 0
+    while (fd)
+    {
+	close(--fd);
+    }
+
+    value = getpid();
+    setpgrp(0, value);
+
+    if ((fd = open("/dev/tty", O_RDWR)) >= 0)
+    {
+	ioctl(fd, TIOCNOTTY, 0);    /* Thor : 為什麼還要用  tty? */
+	close(fd);
+    }
+#endif
+
+    fd = open(CHAT_PIDFILE, O_WRONLY | O_CREAT | O_TRUNC, 0600);
+    if (fd >= 0)
+    {
+	/* sprintf(buf, "%5d\n", value); */
+	sprintf(buf, "%5d\n", getpid());
+	write(fd, buf, 6);
+	close(fd);
+    }
+
+#if 0
+    /* ------------------------------ */
+    /* trap signals                   */
+    /* ------------------------------ */
+
+    for (fd = 1; fd < NSIG; fd++)
+    {
+
+	signal(fd, SIG_IGN);
+    }
+#endif
+
+    fd = socket(PF_INET, SOCK_STREAM, 0);
+
+#if 0
+    value = fcntl(fd, F_GETFL, 0);
+    fcntl(fd, F_SETFL, value | O_NDELAY);
+#endif
+
+    value = 1;
+    setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (char *) &value, sizeof(value));
+
+#if 0
+    setsockopt(fd, SOL_SOCKET, SO_KEEPALIVE, (char *) &value, sizeof(value));
+
+    value = 81920;
+    setsockopt(fd, SOL_SOCKET, SO_RCVBUF, (char *) &value, sizeof(value));
+#endif
+
+    ld.l_onoff = ld.l_linger = 0;
+    setsockopt(fd, SOL_SOCKET, SO_LINGER, (char *) &ld, sizeof(ld));
+
+    memset((char *) &fsin, 0, sizeof(fsin));
+    fsin.sin_family = AF_INET;
+    fsin.sin_port = htons(NEW_CHATPORT);
+    fsin.sin_addr.s_addr = htonl(INADDR_ANY);
+
+    if (bind(fd, (struct sockaddr *) & fsin, sizeof(fsin)) < 0)
+	exit(1);
+
+    listen(fd, SOCK_QLEN);
+
+    return fd;
+}
+
+
+static void
+free_resource(fd)
+    int fd;
+{
+    static int loop = 0;
+    register ChatUser *user;
+    register int sock, num;
+
+    num = 0;
+    for (user = mainuser; user; user = user->unext)
+    {
+	MYDOG;
+
+	num++;
+	sock = user->sock;
+	if (fd < sock)
+	    fd = sock;
+    }
+
+    sprintf(chatbuf, "%d, %d user (%d -> %d)", ++loop, num, maxfds, fd);
+    logit("LOOP", chatbuf);
+
+    maxfds = fd + 1;
+}
+
+
+#ifdef  SERVER_USAGE
+static void
+server_usage()
+{
+    struct rusage ru;
+    char buf[2048];
+
+    if (getrusage(RUSAGE_SELF, &ru))
+	return;
+
+    sprintf(buf, "\n[Server Usage]\n\n"
+	    "user time: %.6f\n"
+	    "system time: %.6f\n"
+	    "maximum resident set size: %lu P\n"
+	    "integral resident set size: %lu\n"
+	    "page faults not requiring physical I/O: %ld\n"
+	    "page faults requiring physical I/O: %ld\n"
+	    "swaps: %ld\n"
+	    "block input operations: %ld\n"
+	    "block output operations: %ld\n"
+	    "messages sent: %ld\n"
+	    "messages received: %ld\n"
+	    "signals received: %ld\n"
+	    "voluntary context switches: %ld\n"
+	    "involuntary context switches: %ld\n"
+	    "gline: %d\n\n",
+
+	    (double) ru.ru_utime.tv_sec + (double) ru.ru_utime.tv_usec / 1000000.0,
+	    (double) ru.ru_stime.tv_sec + (double) ru.ru_stime.tv_usec / 1000000.0,
+	    ru.ru_maxrss,
+	    ru.ru_idrss,
+	    ru.ru_minflt,
+	    ru.ru_majflt,
+	    ru.ru_nswap,
+	    ru.ru_inblock,
+	    ru.ru_oublock,
+	    ru.ru_msgsnd,
+	    ru.ru_msgrcv,
+	    ru.ru_nsignals,
+	    ru.ru_nvcsw,
+	    ru.ru_nivcsw,
+	    gline);
+
+    write(flog, buf, strlen(buf));
+}
+#endif
+
+
+static void
+abort_server()
+{
+    log_close();
+    exit(1);
+}
+
+
+static void
+reaper()
+{
+    int state;
+
+    while (waitpid(-1, &state, WNOHANG | WUNTRACED) > 0)
+    {
+	MYDOG;
+    }
+}
+
+
+int
+main()
+{
+    register int msock, csock, nfds;
+    register ChatUser *cu;
+    register fd_set *rptr, *xptr;
+    fd_set rset, xset;
+    struct timeval tv;
+    time_t uptime, tmaintain;
+
+    msock = start_daemon();
+
+    setgid(BBSGID);
+    setuid(BBSUID);
+
+    log_init();
+
+    signal(SIGBUS, SIG_IGN);
+    signal(SIGSEGV, SIG_IGN);
+    signal(SIGPIPE, SIG_IGN);
+    signal(SIGURG, SIG_IGN);
+
+    signal(SIGCHLD, reaper);
+    signal(SIGTERM, abort_server);
+
+#ifdef  SERVER_USAGE
+    signal(SIGPROF, server_usage);
+#endif
+
+    /* ----------------------------- */
+    /* init variable : rooms & users */
+    /* ----------------------------- */
+
+    mainuser = NULL;
+    memset(&mainroom, 0, sizeof(mainroom));
+    strcpy(mainroom.name, MAIN_NAME);
+    strcpy(mainroom.topic, MAIN_TOPIC);
+
+    /* ----------------------------------- */
+    /* main loop                           */
+    /* ----------------------------------- */
+
+#if 0
+    /* Thor: 在listen 後才回client, 每次進來就會成功 */
+    if (fork())
+	exit(0);
+#endif
+
+    FD_ZERO(&mainfds);
+    FD_SET(msock, &mainfds);
+    rptr = &rset;
+    xptr = &xset;
+    maxfds = msock + 1;
+
+    tmaintain = time(0) + CHAT_INTERVAL;
+
+    for (;;)
+    {
+	uptime = time(0);
+	if (tmaintain < uptime)
+	{
+	    tmaintain = uptime + CHAT_INTERVAL;
+
+	    /* client/server 版本利用 ping-pong 方法判斷 user 是不是還活著 */
+	    /* 如果 client 已經結束了，就釋放其 resource */
+
+	    free_resource(msock);
+	}
+
+	MYDOG;
+
+	memcpy(rptr, &mainfds, sizeof(fd_set));
+	memcpy(xptr, &mainfds, sizeof(fd_set));
+
+	/* Thor: for future reservation bug */
+
+	tv.tv_sec = CHAT_INTERVAL;
+	tv.tv_usec = 0;
+
+	MYDOG;
+
+	nfds = select(maxfds, rptr, NULL, xptr, &tv);
+
+	MYDOG;
+	/* free idle user & chatroom's resource when no traffic */
+
+	if (nfds == 0)
+	{
+	    continue;
+	}
+
+	/* check error condition */
+
+	if (nfds < 0)
+	{
+	    csock = errno;
+	    continue;
+	}
+
+	/* accept new connection */
+
+	if (FD_ISSET(msock, rptr))
+	{
+	    for (;;)
+	    {
+		MYDOG;                          /* Thor: check for endless */
+		csock = accept(msock, NULL, NULL);
+
+		if (csock >= 0)
+		{
+		    MYDOG;
+		    if((cu = (ChatUser *) malloc(sizeof(ChatUser))))
+		    {
+			memset(cu, 0, sizeof(ChatUser));
+			cu->sock = csock;
+
+			cu->unext = mainuser;
+			mainuser = cu;
+
+#if 0
+			if (mainuser.next)
+			    mainuser.next->prev = cu;
+			cu->next = mainuser.next;
+			mainuser.next = cu;
+			cu->prev = &mainuser;
+#endif
+
+			totaluser++;
+			FD_SET(csock, &mainfds);
+			if (csock >= maxfds)
+			    maxfds = csock + 1;
+
+#ifdef  DEBUG
+			logit("accept", "OK");
+#endif
+		    }
+		    else
+		    {
+			close(csock);
+			logit("accept", "malloc fail");
+		    }
+		    MYDOG;
+
+		    break;
+		}
+
+		csock = errno;
+		if (csock != EINTR)
+		{
+		    break;
+		}
+	    }
+
+	    FD_CLR(msock, rptr);
+
+	    if (--nfds <= 0)
+		continue;
+	}
+
+	for (cu = mainuser; cu; cu = cu->unext)
+	{
+	    MYDOG;
+
+	    csock = cu->sock;
+
+	    if (FD_ISSET(csock, xptr))
+	    {
+		logout_user(cu);
+		FD_CLR(csock, xptr);
+	    }
+	    else if (FD_ISSET(csock, rptr))
+	    {
+		if (cuser_serve(cu) < 0)
+		    logout_user(cu);
+	    }
+	    else
+	    {
+		continue;
+	    }
+
+	    FD_CLR(csock, rptr);
+	    if (--nfds <= 0)
+		break;
+	}
+
+	/* end of main loop */
+    }
+}