/***************************************************************************
 *  Original Diku Mud copyright (C) 1990, 1991 by Sebastian Hammer,        *
 *  Michael Seifert, Hans Henrik St{rfeldt, Tom Madsen, and Katja Nyboe.   *
 *                                                                         *
 *  Merc Diku Mud improvments copyright (C) 1992, 1993 by Michael          *
 *  Chastain, Michael Quan, and Mitchell Tse.                              *
 *                                                                         *
 *  In order to use any part of this Merc Diku Mud, you must comply with   *
 *  both the original Diku license in 'license.doc' as well the Merc       *
 *  license in 'license.txt'.  In particular, you may not remove either of *
 *  these copyright notices.                                               *
 *                                                                         *
 *  Thanks to abaddon for proof-reading our comm.c and pointing out bugs.  *
 *  Any remaining bugs are, of course, our work, not his.  :)              *
 *                                                                         *
 *  Much time and thought has gone into this software and you are          *
 *  benefitting.  We hope that you share your changes too.  What goes      *
 *  around, comes around.                                                  *
 ***************************************************************************/

/***************************************************************************
*	ROM 2.4 is copyright 1993-1998 Russ Taylor			   *
*	ROM has been brought to you by the ROM consortium		   *
*	    Russ Taylor (rtaylor@hypercube.org)				   *
*	    Gabrielle Taylor (gtaylor@hypercube.org)			   *
*	    Brian Moore (zump@rom.org)					   *
*	By using this code, you have agreed to follow the terms of the	   *
*	ROM license, in the file Rom24/doc/rom.license			   *
***************************************************************************/

/*
 * This file contains all of the OS-dependent stuff:
 *   startup, signals, BSD sockets for tcp/ip, i/o, timing.
 *
 * The data flow for input is:
 *    Game_loop ---> Read_from_descriptor ---> Read
 *    Game_loop ---> Read_from_buffer
 *
 * The data flow for output is:
 *    Game_loop ---> Process_Output ---> Write_to_descriptor -> Write
 *
 * The OS-dependent functions are Read_from_descriptor and Write_to_descriptor.
 * -- Furey  26 Jan 1993
 */

#include <sys/types.h>
#if !defined(WIN32)
#include <sys/time.h>
#include <sys/wait.h>
#include <unistd.h>             /* OLC -- for close read write etc */
#else
#include <winsock2.h>
#include <sys\timeb.h>
#include <direct.h>
#include <io.h>
#endif
#include <ctype.h>
#include <errno.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <time.h>
#include <stdarg.h>             /* chprintf */

#include "merc.h"
#include "interp.h"
#include "recycle.h"
#include "tables.h"
#include "winstuff.h"
/*
 * Malloc debugging stuff.
 */
#if defined(sun)
#undef MALLOC_DEBUG
#endif

#if defined(MALLOC_DEBUG)
#include <malloc.h>
extern int malloc_debug args ( ( int ) );
extern int malloc_verify args ( ( void ) );
#endif

/*
 * Signal handling.
 * Apollo has a problem with __attribute(atomic) in signal.h,
 *   I dance around it.
 */
#if defined(apollo)
#define __attribute(x)
#endif

#if defined(unix)
#include <signal.h>
#endif

#if defined(apollo)
#undef __attribute
#endif

#include <fcntl.h>
#if !defined(WIN32)
#include <netdb.h>
#include <netinet/in.h>
#include <sys/socket.h>
#endif
#include "telnet.h"
const char echo_off_str[] = { IAC, WILL, TELOPT_ECHO, '\0' };
const char echo_on_str[] = { IAC, WONT, TELOPT_ECHO, '\0' };
const char go_ahead_str[] = { IAC, GA, '\0' };

/*
 * OS-dependent declarations.
 */
#if	defined(_AIX)
#include <sys/select.h>
int accept args ( ( int s, struct sockaddr * addr, int *addrlen ) );
int bind args ( ( int s, struct sockaddr * name, int namelen ) );
void bzero args ( ( char *b, int length ) );
int getpeername args ( ( int s, struct sockaddr * name, int *namelen ) );
int getsockname args ( ( int s, struct sockaddr * name, int *namelen ) );
int gettimeofday args ( ( struct timeval * tp, struct timezone * tzp ) );
int listen args ( ( int s, int backlog ) );
int setsockopt
args ( ( int s, int level, int optname, void *optval, int optlen ) );
int socket args ( ( int domain, int type, int protocol ) );
#endif

#if	defined(apollo)
#include <unistd.h>
void bzero args ( ( char *b, int length ) );
#endif

#if	defined(__hpux)
int accept args ( ( int s, void *addr, int *addrlen ) );
int bind args ( ( int s, const void *addr, int addrlen ) );
void bzero args ( ( char *b, int length ) );
int getpeername args ( ( int s, void *addr, int *addrlen ) );
int getsockname args ( ( int s, void *name, int *addrlen ) );
int gettimeofday args ( ( struct timeval * tp, struct timezone * tzp ) );
int listen args ( ( int s, int backlog ) );
int setsockopt
args ( ( int s, int level, int optname, const void *optval, int optlen ) );
int socket args ( ( int domain, int type, int protocol ) );
#endif

#if	defined(interactive)
#include <net/errno.h>
#include <sys/fnctl.h>
#endif

#if	defined(MIPS_OS)
extern int errno;
#endif

#if	defined(NeXT)
int close args ( ( int fd ) );
int fcntl args ( ( int fd, int cmd, int arg ) );
#if	!defined(htons)
u_short htons args ( ( u_short hostshort ) );
#endif
#if	!defined(ntohl)
u_long ntohl args ( ( u_long hostlong ) );
#endif
int read args ( ( int fd, char *buf, int nbyte ) );
int select
args ( ( int width, fd_set * readfds, fd_set * writefds, fd_set * exceptfds,
         struct timeval * timeout ) );
int write args ( ( int fd, char *buf, int nbyte ) );
#endif

#if	defined(sequent)
int accept args ( ( int s, struct sockaddr * addr, int *addrlen ) );
int bind args ( ( int s, struct sockaddr * name, int namelen ) );
int close args ( ( int fd ) );
int fcntl args ( ( int fd, int cmd, int arg ) );
int getpeername args ( ( int s, struct sockaddr * name, int *namelen ) );
int getsockname args ( ( int s, struct sockaddr * name, int *namelen ) );
int gettimeofday args ( ( struct timeval * tp, struct timezone * tzp ) );
#if	!defined(htons)
u_short htons args ( ( u_short hostshort ) );
#endif
int listen args ( ( int s, int backlog ) );
#if	!defined(ntohl)
u_long ntohl args ( ( u_long hostlong ) );
#endif
int read args ( ( int fd, char *buf, int nbyte ) );
int select
args ( ( int width, fd_set * readfds, fd_set * writefds, fd_set * exceptfds,
         struct timeval * timeout ) );
int setsockopt
args ( ( int s, int level, int optname, caddr_t optval, int optlen ) );
int socket args ( ( int domain, int type, int protocol ) );
int write args ( ( int fd, char *buf, int nbyte ) );
#endif

/* This includes Solaris Sys V as well */
#if defined(sun)
int accept args ( ( int s, struct sockaddr * addr, int *addrlen ) );
int bind args ( ( int s, struct sockaddr * name, int namelen ) );
void bzero args ( ( char *b, int length ) );
int close args ( ( int fd ) );
int getpeername args ( ( int s, struct sockaddr * name, int *namelen ) );
int getsockname args ( ( int s, struct sockaddr * name, int *namelen ) );
int listen args ( ( int s, int backlog ) );
int read args ( ( int fd, char *buf, int nbyte ) );
int select
args ( ( int width, fd_set * readfds, fd_set * writefds, fd_set * exceptfds,
         struct timeval * timeout ) );

#if !defined(__SVR4)
int gettimeofday args ( ( struct timeval * tp, struct timezone * tzp ) );

#if defined(SYSV)
int setsockopt
args ( ( int s, int level, int optname, const char *optval, int optlen ) );
#else
int setsockopt
args ( ( int s, int level, int optname, void *optval, int optlen ) );
#endif
#endif
int socket args ( ( int domain, int type, int protocol ) );
int write args ( ( int fd, char *buf, int nbyte ) );
#endif

#if defined(ultrix)
int accept args ( ( int s, struct sockaddr * addr, int *addrlen ) );
int bind args ( ( int s, struct sockaddr * name, int namelen ) );
void bzero args ( ( char *b, int length ) );
int close args ( ( int fd ) );
int getpeername args ( ( int s, struct sockaddr * name, int *namelen ) );
int getsockname args ( ( int s, struct sockaddr * name, int *namelen ) );
int gettimeofday args ( ( struct timeval * tp, struct timezone * tzp ) );
int listen args ( ( int s, int backlog ) );
int read args ( ( int fd, char *buf, int nbyte ) );
int select
args ( ( int width, fd_set * readfds, fd_set * writefds, fd_set * exceptfds,
         struct timeval * timeout ) );
int setsockopt
args ( ( int s, int level, int optname, void *optval, int optlen ) );
int socket args ( ( int domain, int type, int protocol ) );
int write args ( ( int fd, char *buf, int nbyte ) );
#endif

/*
 * Global variables.
 */
DESCRIPTOR_DATA *descriptor_list;   /* All open descriptors     */
DESCRIPTOR_DATA *d_next;        /* Next descriptor in loop  */
FILE *fpReserve;                /* Reserved file handle     */
bool god;                       /* All new chars are gods!  */
bool merc_down;                 /* Shutdown         */
bool wizlock;                   /* Game is wizlocked        */
bool newlock;                   /* Game is newlocked        */
char str_boot_time[MAX_INPUT_LENGTH];
time_t current_time;            /* time of this pulse */
bool MOBtrigger = TRUE;         /* act() switch                 */
/* Needs to be global because of do_copyover */
int port, control;
/* Global variable */
#if !defined(WIN32)
volatile sig_atomic_t crashed = 0;  /* Are we currently crashing? */
#endif

#if	defined( WIN32 )
#define WOULD_HAVE_BLOCKED ( WSAGetLastError() == WSAEWOULDBLOCK )
#else
#define WOULD_HAVE_BLOCKED ( errno == EWOULDBLOCK )
#endif

void game_loop args ( ( int ctrl ) );
int init_socket args ( ( int prt ) );
void init_descriptor args ( ( int ctrl ) );
bool read_from_descriptor args ( ( DESCRIPTOR_DATA * d ) );
bool write_to_descriptor args ( ( int desc, char *txt, int length ) );
void halt_mud args ( ( int sig ) );

/*
 * Other local functions (OS-independent).
 */
bool check_parse_name args ( ( char *name ) );
bool check_reconnect args ( ( DESCRIPTOR_DATA * d, char *name, bool fConn ) );
bool check_playing args ( ( DESCRIPTOR_DATA * d, char *name ) );
int main args ( ( int argc, char **argv ) );
void nanny args ( ( DESCRIPTOR_DATA * d, char *argument ) );
bool process_output args ( ( DESCRIPTOR_DATA * d, bool fPrompt ) );
void read_from_buffer args ( ( DESCRIPTOR_DATA * d ) );
void stop_idling args ( ( CHAR_DATA * ch ) );
void bust_a_prompt args ( ( CHAR_DATA * ch ) );

#if !defined(WIN32)
// Stop an endless loop 
// Uses alarm() to check for game clock advance every 300 seconds.  If more
// than 240 seconds of realtime has elapsed, assume loop and conduct a copyover.
static void sigalrm ( int sig )
{
    time_t ptm;
    time ( &ptm );
    fprintf ( stderr, "TOCK!\n\r" );

    if ( ( ptm - current_time ) > 240 )
    {
        fprintf ( stderr, "Looping - Last Command: %s\r", last_command );
        // this requires you to add an "if (ch)" before the send_to_char
        // statements in do_copyover.
        do_copyover ( NULL, "" );
        exit ( 1 );
    }
    alarm ( 300 );
}
#endif

#if defined(WIN32)
void gettimeofday ( struct timeval *t, void *tz )
{
    struct timeb timebuffer;
    ftime ( &timebuffer );
    t->tv_sec = timebuffer.time;
    t->tv_usec = timebuffer.millitm * 1000;
}
#endif

int main ( int argc, char **argv )
{
    struct timeval now_time;
    bool fCopyOver = FALSE;
#if !defined(WIN32)
    struct sigaction halt_action, ignore_action, alarm_action;

    halt_action.sa_handler = halt_mud;
    sigemptyset ( &halt_action.sa_mask );
    halt_action.sa_flags = SA_NOMASK;

    ignore_action.sa_handler = SIG_IGN;
    sigemptyset ( &ignore_action.sa_mask );
    ignore_action.sa_flags = 0;

    alarm_action.sa_handler = sigalrm;
    sigemptyset ( &alarm_action.sa_mask );
    alarm_action.sa_flags = SA_NOMASK;

    sigaction ( SIGPIPE, &ignore_action, NULL );    /* who cares about pipes? */
    sigaction ( SIGHUP, &ignore_action, NULL ); /* stay alive if user quits */
    sigaction ( SIGINT, &halt_action, NULL );   /* interrupted at keyboard */
    sigaction ( SIGQUIT, &halt_action, NULL );  /* quit at keyboard */
    sigaction ( SIGILL, &halt_action, NULL );   /* illegal instruction */
    sigaction ( SIGFPE, &halt_action, NULL );   /* floating point error */
    sigaction ( SIGSEGV, &halt_action, NULL );  /* invalid memory reference */
    sigaction ( SIGTERM, &halt_action, NULL );  /* terminate */
    sigaction ( SIGBUS, &halt_action, NULL );   /* out of memory?? */
    sigaction ( SIGALRM, &alarm_action, NULL ); /* endless loop check */

    alarm ( 300 );
#endif
    /*
     * Memory debugging if needed.
     */
#if defined(MALLOC_DEBUG)
    malloc_debug ( 2 );
#endif

    /*
     * Init time.
     */
    gettimeofday ( &now_time, NULL );
    current_time = ( time_t ) now_time.tv_sec;
    strcpy ( str_boot_time, ctime ( &current_time ) );

    /*
     * Reserve one channel for our use.
     */
    if ( ( fpReserve = file_open ( NULL_FILE, "r" ) ) == NULL )
    {
        perror ( NULL_FILE );
        exit ( 1 );
    }

    /*
     * Get the port number.
     */
    port = 4000;
    if ( argc > 1 )
    {
        if ( !is_number ( argv[1] ) )
        {
            fprintf ( stderr, "Usage: %s [port #]\n", argv[0] );
            exit ( 1 );
        }
        else if ( ( port = atoi ( argv[1] ) ) <= 1024 )
        {
            fprintf ( stderr, "Port number must be above 1024.\n" );
            exit ( 1 );
        }
        /* Are we recovering from a copyover? */
        if ( argv[2] && argv[2][0] )
        {
            fCopyOver = TRUE;
            control = atoi ( argv[3] );
        }
        else
            fCopyOver = FALSE;
    }

    /*
     * Run the game.
     */

    if ( !fCopyOver )
        control = init_socket ( port );
    boot_db (  );
    sprintf ( log_buf, "ROM is ready to rock on port %d.", port );
    log_string ( log_buf );
    if ( fCopyOver )
        copyover_recover (  );
    game_loop ( control );
    close ( control );

    /*
     * That's all, folks.
     */
    log_string ( "Normal termination of game." );
    exit ( 0 );
    return 0;
}

int init_socket ( int prt )
{
    static struct sockaddr_in sa_zero;
    struct sockaddr_in sa;
    int x = 1;
    int fd;

    if ( ( fd = socket ( AF_INET, SOCK_STREAM, 0 ) ) < 0 )
    {
        perror ( "Init_socket: socket" );
        exit ( 1 );
    }

    if ( setsockopt
         ( fd, SOL_SOCKET, SO_REUSEADDR, ( char * ) &x, sizeof ( x ) ) < 0 )
    {
        perror ( "Init_socket: SO_REUSEADDR" );
        close ( fd );
        exit ( 1 );
    }

#if defined(SO_DONTLINGER) && !defined(SYSV)
    {
        struct linger ld;

        ld.l_onoff = 1;
        ld.l_linger = 1000;

        if ( setsockopt
             ( fd, SOL_SOCKET, SO_DONTLINGER, ( char * ) &ld,
               sizeof ( ld ) ) < 0 )
        {
            perror ( "Init_socket: SO_DONTLINGER" );
            close ( fd );
            exit ( 1 );
        }
    }
#endif

    sa = sa_zero;
    sa.sin_family = AF_INET;
    sa.sin_port = htons ( prt );

    if ( bind ( fd, ( struct sockaddr * ) &sa, sizeof ( sa ) ) < 0 )
    {
        perror ( "Init socket: bind" );
        close ( fd );
        exit ( 1 );
    }

    if ( listen ( fd, 3 ) < 0 )
    {
        perror ( "Init socket: listen" );
        close ( fd );
        exit ( 1 );
    }

    return fd;
}

void show_greeting ( DESCRIPTOR_DATA * dnew )
{
    extern char *help_greeting;
    if ( help_greeting[0] == '.' )
        write_to_buffer ( dnew, help_greeting + 1, 0 );
    else
        write_to_buffer ( dnew, help_greeting, 0 );
}

void game_loop ( int ctrl )
{
    static struct timeval null_time;
    struct timeval last_time;

#if !defined(WIN32)
    signal ( SIGPIPE, SIG_IGN );
#endif
    gettimeofday ( &last_time, NULL );
    current_time = ( time_t ) last_time.tv_sec;

    /* Main loop */
    while ( !merc_down )
    {
        fd_set in_set;
        fd_set out_set;
        fd_set exc_set;
        DESCRIPTOR_DATA *d;
        int maxdesc;

#if defined(MALLOC_DEBUG)
        if ( malloc_verify (  ) != 1 )
            abort (  );
#endif

        /*
         * Poll all active descriptors.
         */
        FD_ZERO ( &in_set );
        FD_ZERO ( &out_set );
        FD_ZERO ( &exc_set );
        FD_SET ( ctrl, &in_set );
        maxdesc = ctrl;
        for ( d = descriptor_list; d; d = d->next )
        {
            maxdesc = UMAX ( maxdesc, d->descriptor );
            FD_SET ( d->descriptor, &in_set );
            FD_SET ( d->descriptor, &out_set );
            FD_SET ( d->descriptor, &exc_set );
        }

        if ( select ( maxdesc + 1, &in_set, &out_set, &exc_set, &null_time ) <
             0 )
        {
            if ( errno != EINTR )
            {
                perror ( "Game_loop: select: poll" );
                exit ( 1 );
            }
        }

        /*
         * New connection?
         */
        if ( FD_ISSET ( ctrl, &in_set ) )
            init_descriptor ( ctrl );

        /*
         * Kick out the freaky folks.
         */
        for ( d = descriptor_list; d != NULL; d = d_next )
        {
            d_next = d->next;
            if ( FD_ISSET ( d->descriptor, &exc_set ) )
            {
                FD_CLR ( d->descriptor, &in_set );
                FD_CLR ( d->descriptor, &out_set );
                if ( d->character && d->connected == CON_PLAYING )
                    save_char_obj ( d->character );
                d->outtop = 0;
                close_socket ( d );
            }
        }

        /*
         * Process input.
         */
        for ( d = descriptor_list; d != NULL; d = d_next )
        {
            d_next = d->next;
            d->fcommand = FALSE;

            if ( FD_ISSET ( d->descriptor, &in_set ) )
            {
                if ( d->character != NULL )
                    d->character->timer = 0;
                if ( !read_from_descriptor ( d ) )
                {
                    FD_CLR ( d->descriptor, &out_set );
                    if ( d->character != NULL && d->connected == CON_PLAYING )
                        save_char_obj ( d->character );
                    d->outtop = 0;
                    close_socket ( d );
                    continue;
                }
            }

            if ( d->character != NULL && d->character->daze > 0 )
                --d->character->daze;

            if ( d->character != NULL && d->character->wait > 0 )
            {
                --d->character->wait;
                continue;
            }

            read_from_buffer ( d );
            if ( d->incomm[0] != '\0' )
            {
                d->fcommand = TRUE;
                stop_idling ( d->character );

                /* OLC */
                if ( d->showstr_point )
                    show_string ( d, d->incomm );
                else if ( d->pString )
                    string_add ( d->character, d->incomm );
                else
                    switch ( d->connected )
                    {
                        case CON_PLAYING:
                            if ( !run_olc_editor ( d ) )
                                substitute_alias ( d, d->incomm );
                            break;
                        default:
                            nanny ( d, d->incomm );
                            break;
                    }

                d->incomm[0] = '\0';
            }
        }

        /*
         * Autonomous game motion.
         */
        update_handler (  );

        /*
         * Output.
         */
        for ( d = descriptor_list; d != NULL; d = d_next )
        {
            d_next = d->next;

            if ( ( d->fcommand || d->outtop > 0 ) &&
                 FD_ISSET ( d->descriptor, &out_set ) )
            {
                if ( !process_output ( d, TRUE ) )
                {
                    if ( d->character != NULL && d->connected == CON_PLAYING )
                        save_char_obj ( d->character );
                    d->outtop = 0;
                    close_socket ( d );
                }
            }
        }

        /*
         * Synchronize to a clock.
         * Sleep( last_time + 1/PULSE_PER_SECOND - now ).
         * Careful here of signed versus unsigned arithmetic.
         */
        {
            struct timeval now_time;
            long secDelta;
            long usecDelta;

            gettimeofday ( &now_time, NULL );
            usecDelta =
                ( ( int ) last_time.tv_usec ) - ( ( int ) now_time.tv_usec ) +
                1000000 / PULSE_PER_SECOND;
            secDelta =
                ( ( int ) last_time.tv_sec ) - ( ( int ) now_time.tv_sec );
            while ( usecDelta < 0 )
            {
                usecDelta += 1000000;
                secDelta -= 1;
            }

            while ( usecDelta >= 1000000 )
            {
                usecDelta -= 1000000;
                secDelta += 1;
            }

            if ( secDelta > 0 || ( secDelta == 0 && usecDelta > 0 ) )
            {
                struct timeval stall_time;

                stall_time.tv_usec = usecDelta;
                stall_time.tv_sec = secDelta;
                if ( select ( 0, NULL, NULL, NULL, &stall_time ) < 0 )
                {
                    if ( errno != EINTR )
                    {
                        perror ( "Game_loop: select: stall" );
                        exit ( 1 );
                    }
                }
            }
        }

        gettimeofday ( &last_time, NULL );
        current_time = ( time_t ) last_time.tv_sec;
    }

    return;
}

void init_descriptor ( int ctrl )
{
    char buf[MAX_STRING_LENGTH];
    DESCRIPTOR_DATA *dnew;
    struct sockaddr_in sock;
    struct hostent *from;
    int desc;
    int size;
#if defined(WIN32)
    static unsigned long ARGP = 1;
#endif

    size = sizeof ( sock );
#if defined(WIN32)
    getsockname ( ctrl, ( struct sockaddr * ) &sock, ( int * ) &size );
#else
    getsockname ( ctrl, ( struct sockaddr * ) &sock, ( socklen_t * ) & size );
#endif
#if defined(WIN32)
    if ( ( desc =
           accept ( ctrl, ( struct sockaddr * ) &sock,
                    ( int * ) &size ) ) < 0 )
#else
    if ( ( desc =
           accept ( ctrl, ( struct sockaddr * ) &sock,
                    ( socklen_t * ) & size ) ) < 0 )
#endif
    {
        perror ( "New_descriptor: accept" );
        return;
    }

#if !defined(FNDELAY)
#define FNDELAY O_NDELAY
#endif

#if defined( WIN32 )

    if ( ioctlsocket ( desc, FIONBIO, &ARGP ) != 0 )
    {
        bugf ( "ioctlsocket returned error code %d", WSAGetLastError (  ) );
        return;
    }
#else

    if ( fcntl ( desc, F_SETFL, FNDELAY ) == -1 )
    {
        perror ( "New_descriptor: fcntl: FNDELAY" );
        return;
    }
#endif
    /*
     * Cons a new descriptor.
     */
    dnew = new_descriptor (  ); /* new_descriptor now also allocates things */
    dnew->descriptor = desc;

    size = sizeof ( sock );
#if defined(WIN32)
    if ( getpeername ( desc, ( struct sockaddr * ) &sock, ( int * ) &size ) <
         0 )
#else
    if ( getpeername
         ( desc, ( struct sockaddr * ) &sock, ( socklen_t * ) & size ) < 0 )
#endif
    {
        perror ( "New_descriptor: getpeername" );
        dnew->host = str_dup ( "(unknown)" );
    }
    else
    {
        /*
         * Would be nice to use inet_ntoa here but it takes a struct arg,
         * which ain't very compatible between gcc and system libraries.
         */
        int addr;

        addr = ntohl ( sock.sin_addr.s_addr );
        sprintf ( buf, "%d.%d.%d.%d", ( addr >> 24 ) & 0xFF,
                  ( addr >> 16 ) & 0xFF, ( addr >> 8 ) & 0xFF,
                  ( addr ) & 0xFF );
        sprintf ( log_buf, "Sock.sinaddr:  %s", buf );
        log_string ( log_buf );
        from =
            gethostbyaddr ( ( char * ) &sock.sin_addr,
                            sizeof ( sock.sin_addr ), AF_INET );
        dnew->host = str_dup ( from ? from->h_name : buf );
    }

    /*
     * Swiftest: I added the following to ban sites.  I don't
     * endorse banning of sites, but Copper has few descriptors now
     * and some people from certain sites keep abusing access by
     * using automated 'autodialers' and leaving connections hanging.
     *
     * Furey: added suffix check by request of Nickel of HiddenWorlds.
     */
    if ( check_ban ( dnew->host, BAN_ALL ) )
    {
        write_to_descriptor ( desc,
                              "Your site has been banned from this mud.\n\r",
                              0 );
        close ( desc );
        free_descriptor ( dnew );
        return;
    }
    /*
     * Init descriptor data.
     */
    dnew->next = descriptor_list;
    descriptor_list = dnew;

    /*
     * Send the greeting.
     */
    write_to_buffer ( dnew,
                      "Would you like ANSI color? (Y)es, (N)o, (T)est:\n\r",
                      0 );
    return;
}

void close_socket ( DESCRIPTOR_DATA * dclose )
{
    CHAR_DATA *ch;

    if ( dclose->outtop > 0 )
        process_output ( dclose, FALSE );

    if ( dclose->snoop_by != NULL )
    {
        write_to_buffer ( dclose->snoop_by,
                          "Your victim has left the game.\n\r", 0 );
    }

    {
        DESCRIPTOR_DATA *d;

        for ( d = descriptor_list; d != NULL; d = d->next )
        {
            if ( d->snoop_by == dclose )
                d->snoop_by = NULL;
        }
    }

    if ( ( ch = dclose->character ) != NULL )
    {
        sprintf ( log_buf, "Closing link to %s.", ch->name );
        log_string ( log_buf );
        /* cut down on wiznet spam when rebooting */
        /* If ch is writing note or playing, just lose link otherwise clear char */
        if ( ( dclose->connected == CON_PLAYING && !merc_down ) ||
             ( ( dclose->connected >= CON_NOTE_TO ) &&
               ( dclose->connected <= CON_NOTE_FINISH ) ) )
        {
            act ( "$n has lost $s link.", ch, NULL, NULL, TO_ROOM );
            wiznet ( "Net death has claimed $N.", ch, NULL, WIZ_LINKS, 0, 0 );
            ch->desc = NULL;
        }
        else
        {
            free_char ( dclose->original ? dclose->original : dclose->
                        character );
        }
    }

    if ( d_next == dclose )
        d_next = d_next->next;

    if ( dclose == descriptor_list )
    {
        descriptor_list = descriptor_list->next;
    }
    else
    {
        DESCRIPTOR_DATA *d;

        for ( d = descriptor_list; d && d->next != dclose; d = d->next )
            ;
        if ( d != NULL )
            d->next = dclose->next;
        else
            bug ( "Close_socket: dclose not found.", 0 );
    }

    close ( dclose->descriptor );
    free_descriptor ( dclose );
    return;
}

bool read_from_descriptor ( DESCRIPTOR_DATA * d )
{
    uint iStart;

    /* Hold horses if pending command already. */
    if ( d->incomm[0] != '\0' )
        return TRUE;

    /* Check for overflow. */
    iStart = strlen ( d->inbuf );
    if ( iStart >= sizeof ( d->inbuf ) - 10 )
    {
        sprintf ( log_buf, "%s input overflow!", d->host );
        log_string ( log_buf );
        write_to_descriptor ( d->descriptor,
                              "\n\r*** PUT A LID ON IT!!! ***\n\r", 0 );
        return FALSE;
    }

    /* Snarf input. */
    for ( ;; )
    {
        int nRead;

        nRead =
            read ( d->descriptor, d->inbuf + iStart,
                   sizeof ( d->inbuf ) - 10 - iStart );
        if ( nRead > 0 )
        {
            iStart += nRead;
            if ( d->inbuf[iStart - 1] == '\n' ||
                 d->inbuf[iStart - 1] == '\r' )
                break;
        }
        else if ( nRead == 0 )
        {
            log_string ( "EOF encountered on read." );
            return FALSE;
        }
        else if ( WOULD_HAVE_BLOCKED )
            break;
        else
        {
            perror ( "Read_from_descriptor" );
            return FALSE;
        }
    }

    d->inbuf[iStart] = '\0';
    return TRUE;
}

/*
 * Transfer one line from input buffer to input line.
 */
void read_from_buffer ( DESCRIPTOR_DATA * d )
{
    int i, j, k;

    /*
     * Hold horses if pending command already.
     */
    if ( d->incomm[0] != '\0' )
        return;

    /*
     * Look for at least one new line.
     */
    for ( i = 0; d->inbuf[i] != '\n' && d->inbuf[i] != '\r'; i++ )
    {
        if ( d->inbuf[i] == '\0' )
            return;
    }

    /*
     * Canonical input processing.
     */
    for ( i = 0, k = 0; d->inbuf[i] != '\n' && d->inbuf[i] != '\r'; i++ )
    {
        if ( k >= MAX_INPUT_LENGTH - 2 )
        {
            write_to_descriptor ( d->descriptor, "Line too long.\n\r", 0 );

            /* skip the rest of the line */
            for ( ; d->inbuf[i] != '\0'; i++ )
            {
                if ( d->inbuf[i] == '\n' || d->inbuf[i] == '\r' )
                    break;
            }
            d->inbuf[i] = '\n';
            d->inbuf[i + 1] = '\0';
            break;
        }

        if ( d->inbuf[i] == '\b' && k > 0 )
            --k;
        else if ( isascii ( d->inbuf[i] ) && isprint ( d->inbuf[i] ) )
            d->incomm[k++] = d->inbuf[i];
    }

    /*
     * Finish off the line.
     */
    if ( k == 0 )
        d->incomm[k++] = ' ';
    d->incomm[k] = '\0';

    /*
     * Deal with bozos with #repeat 1000 ...
     */

    if ( k > 1 || d->incomm[0] == '!' )
    {
        if ( d->incomm[0] != '!' && strcmp ( d->incomm, d->inlast ) )
        {
            d->repeat = 0;
        }
        else
        {
            if ( ++d->repeat >= 25 && d->character &&
                 d->connected == CON_PLAYING )
            {
                sprintf ( log_buf, "%s input spamming!", d->host );
                log_string ( log_buf );
                wiznet ( "Spam spam spam $N spam spam spam spam spam!",
                         d->character, NULL, WIZ_SPAM, 0,
                         get_trust ( d->character ) );
                if ( d->incomm[0] == '!' )
                    wiznet ( d->inlast, d->character, NULL, WIZ_SPAM, 0,
                             get_trust ( d->character ) );
                else
                    wiznet ( d->incomm, d->character, NULL, WIZ_SPAM, 0,
                             get_trust ( d->character ) );

                d->repeat = 0;
/*
		write_to_descriptor( d->descriptor,
		    "\n\r*** PUT A LID ON IT!!! ***\n\r", 0 );
		strcpy( d->incomm, "quit" );
*/
            }
        }
    }

    /*
     * Do '!' substitution.
     */
    if ( d->incomm[0] == '!' )
        strcpy ( d->incomm, d->inlast );
    else
        strcpy ( d->inlast, d->incomm );

    /*
     * Shift the input buffer.
     */
    while ( d->inbuf[i] == '\n' || d->inbuf[i] == '\r' )
        i++;
    for ( j = 0; ( d->inbuf[j] = d->inbuf[i + j] ) != '\0'; j++ )
        ;
    return;
}

char *random_colour ( void )
{
    switch ( number_range ( 1, 14 ) )
    {
        case 1:
            return C_BLUE;
        case 2:
            return C_CYAN;
        case 3:
            return C_GREEN;
        case 4:
            return C_MAGENTA;
        case 5:
            return C_RED;
        case 6:
            return C_YELLOW;
        case 7:
            return CB_BLUE;
        case 8:
            return CB_CYAN;
        case 9:
            return CB_GREEN;
        case 10:
            return CB_MAGENTA;
        case 11:
            return CB_WHITE;
        case 12:
            return CB_RED;
        case 13:
            return C_WHITE;
        case 14:
            return CB_YELLOW;
        default:
            return C_CLEAR;
    }
}

char *random_background ( void )
{
    switch ( number_range ( 0, 13 ) )
    {
        case 0:
            return BLACK_BG;
        case 1:
            return BLUE_BG;
        case 2:
            return CYAN_BG;
        case 3:
            return GREEN_BG;
        case 4:
            return MAGENTA_BG;
        case 5:
            return RED_BG;
        case 6:
            return YELLOW_BG;
        case 7:
            return BLUE_BBG;
        case 8:
            return CYAN_BBG;
        case 9:
            return GREEN_BBG;
        case 10:
            return MAGENTA_BBG;
        case 12:
            return RED_BBG;
        case 13:
            return YELLOW_BBG;
        default:
            return BLACK_BBG;
    }
}

/* Taken from Gary McNickel's WOTmud */
bool process_ansi_output ( DESCRIPTOR_DATA * d )
{
    CHAR_DATA *ch;
    char *counter;
    char output[MSL];
    char temp[MSL];
    char *work;
    bool success = TRUE;
    char *i;

    if ( d == NULL )
        return FALSE;

    ch = ( d->original ? d->original : d->character );

    memset ( output, 0, MSL );
    counter = output;
    work = d->outbuf;

    while ( *work != '\0' && ( work - d->outbuf ) < d->outtop )
    {
        if ( ( int ) ( counter - output ) >= MSL - 32 )
        {

            *counter++ = '\0';

            if ( !
                 ( success =
                   write_to_descriptor ( d->descriptor, output,
                                         strlen ( output ) ) ) )
                break;

            memset ( output, 0, MSL );
            counter = output;

        }

        if ( *work == ANSI_KEY )
        {

            work++;

            temp[0] = '\0';

            if ( DESC_FLAGGED ( d, DESC_COLOUR ) &&
                 ( !ch || !IS_SET ( ch->comm, COMM_NOCOLOUR ) ) )
            {
                switch ( *work )
                {
                    case '\0':
                        break;
                    case ' ':
                        sprintf ( temp, "%c ", ANSI_KEY );
                        break;
                    case 'x':
                    case 'X':
                        strcpy ( temp, color_default ( ch ) );
                        break;
                    case 'v':
                    case 'V':
                        strcpy ( temp, C_REVERSE );
                        break;
                    case 'u':
                    case 'U':
                        strcpy ( temp, C_UNDERSCORE );
                        break;
                    case 'f':
                    case 'F':
                        strcpy ( temp, C_FLASH );
                        break;
                    case 'b':
                        strcpy ( temp, C_BLUE );
                        break;
                    case 'c':
                        strcpy ( temp, C_CYAN );
                        break;
                    case 'g':
                        strcpy ( temp, C_GREEN );
                        break;
                    case 'm':
                        strcpy ( temp, C_MAGENTA );
                        break;
                    case 'd':
                        strcpy ( temp, C_BLACK );
                        break;
                    case 'r':
                        strcpy ( temp, C_RED );
                        break;
                    case 'y':
                        strcpy ( temp, C_YELLOW );
                        break;
                    case 'w':
                        strcpy ( temp, C_WHITE );
                        break;
                    case 'B':
                        strcpy ( temp, CB_BLUE );
                        break;
                    case 'C':
                        strcpy ( temp, CB_CYAN );
                        break;
                    case 'G':
                        strcpy ( temp, CB_GREEN );
                        break;
                    case 'M':
                        strcpy ( temp, CB_MAGENTA );
                        break;
                    case 'D':
                        strcpy ( temp, CB_BLACK );
                        break;
                    case 'R':
                        strcpy ( temp, CB_RED );
                        break;
                    case 'W':
                        strcpy ( temp, CB_WHITE );
                        break;
                    case 'Y':
                        strcpy ( temp, CB_YELLOW );
                        break;
                    case '`':
                        strcpy ( temp, random_colour (  ) );
                        break;
                    case '1':
                        strcpy ( temp, RED_BG );
                        break;
                    case '2':
                        strcpy ( temp, BLUE_BG );
                        break;
                    case '3':
                        strcpy ( temp, GREEN_BG );
                        break;
                    case '4':
                        strcpy ( temp, BLACK_BG );
                        break;
                    case '5':
                        strcpy ( temp, WHITE_BG );
                        break;
                    case '6':
                        strcpy ( temp, MAGENTA_BG );
                        break;
                    case '7':
                        strcpy ( temp, YELLOW_BG );
                        break;
                    case '8':
                        strcpy ( temp, CYAN_BG );
                        break;
                    case '!':
                        strcpy ( temp, RED_BBG );
                        break;
                    case '@':
                        strcpy ( temp, BLUE_BBG );
                        break;
                    case '#':
                        strcpy ( temp, GREEN_BBG );
                        break;
                    case '$':
                        strcpy ( temp, BLACK_BBG );
                        break;
                    case '%':
                        strcpy ( temp, WHITE_BBG );
                        break;
                    case '^':
                        strcpy ( temp, MAGENTA_BBG );
                        break;
                    case '&':
                        strcpy ( temp, YELLOW_BBG );
                        break;
                    case '*':
                        strcpy ( temp, CYAN_BBG );
                        break;
                    case '+':
                    case '=':
                        strcpy ( temp, random_background (  ) );
                        break;
                    case '-':
                        sprintf ( temp, "%c", C_TILDE );
                        break;
                    case 'P':
                    case 'p':
                        sprintf ( temp, "%c", C_BEEP );
                        break;
                    case ANSI_KEY:
                        sprintf ( temp, "%c", ANSI_KEY );
                        break;
                    default:
                        strcpy ( temp, C_CLEAR );
                        break;
                }
            }
            work++;

            i = temp;
            while ( ( *counter = *i ) != '\0' )
                ++counter, ++i;
        }
        /* Custom colour added by Markanth */
        else if ( *work == ANSI_CUSTOM )
        {
            int slot = 0;

            work++;

            while ( *work != ANSI_END )
            {
                if ( isdigit ( *work ) )
                    slot = ( slot * 10 ) + ( *work - '0' );
                work++;
            }

            work++;

            temp[0] = '\0';

            if ( slot < 0 || slot >= MAX_CUSTOM_COLOUR )
            {
                bug ( "ansi_output: invalid custom color", 0 );
                strcpy ( temp, C_CLEAR );
            }
            else if ( DESC_FLAGGED ( d, DESC_COLOUR ) &&
                      ( !ch || !IS_SET ( ch->comm, COMM_NOCOLOUR ) ) )
            {
                strcpy ( temp, char_colour ( ch, slot ) );
            }

            i = temp;
            while ( ( *counter = *i ) != '\0' )
                ++counter, ++i;
        }
        else
            *counter++ = *work++;
    }

    success = success &&
        ( write_to_descriptor ( d->descriptor, output, strlen ( output ) ) );

    d->outtop = 0;
    return success;

}

/*
 * Low level output function.
 */
bool process_output ( DESCRIPTOR_DATA * d, bool fPrompt )
{
    /*
     * Bust a prompt.
     */
    if ( !merc_down )
    {
        if ( d->showstr_point )
            write_to_buffer ( d, "[Hit Return to continue]\n\r", 0 );
        else if ( fPrompt && d->pString && d->connected == CON_PLAYING )
            write_to_buffer ( d, "> ", 2 );
        else if ( fPrompt && d->connected == CON_PLAYING )
        {
            CHAR_DATA *ch;
            CHAR_DATA *victim;

            ch = d->character;

            /* battle prompt */
            if ( ( victim = ch->fighting ) != NULL && can_see ( ch, victim ) )
            {
                int percent;
                char wound[100];
                char buf[MAX_STRING_LENGTH];

                if ( victim->max_hit > 0 )
                    percent = victim->hit * 100 / victim->max_hit;
                else
                    percent = -1;

                if ( percent >= 100 )
                    sprintf ( wound, "is in excellent condition." );
                else if ( percent >= 90 )
                    sprintf ( wound, "has a few scratches." );
                else if ( percent >= 75 )
                    sprintf ( wound, "has some small wounds and bruises." );
                else if ( percent >= 50 )
                    sprintf ( wound, "has quite a few wounds." );
                else if ( percent >= 30 )
                    sprintf ( wound,
                              "has some big nasty wounds and scratches." );
                else if ( percent >= 15 )
                    sprintf ( wound, "looks pretty hurt." );
                else if ( percent >= 0 )
                    sprintf ( wound, "is in awful condition." );
                else
                    sprintf ( wound, "is bleeding to death." );

                sprintf ( buf, "%s %s \n\r",
                          IS_NPC ( victim ) ? victim->short_descr : victim->
                          name, wound );
                buf[0] = UPPER ( buf[0] );
                write_to_buffer ( d, buf, 0 );
            }

            ch = d->original ? d->original : d->character;
            if ( !IS_SET ( ch->comm, COMM_COMPACT ) )
                write_to_buffer ( d, "\n\r", 2 );

            if ( IS_SET ( ch->comm, COMM_PROMPT ) )
                bust_a_prompt ( d->character );

            if ( IS_SET ( ch->comm, COMM_TELNET_GA ) )
                write_to_buffer ( d, go_ahead_str, 0 );
        }

    }

    /*
     * Short-circuit if nothing to write.
     */
    if ( d->outtop == 0 )
        return TRUE;

    /*
     * Snoop-o-rama.
     */
    if ( d->snoop_by != NULL )
    {
        if ( d->character != NULL )
            write_to_buffer ( d->snoop_by, d->character->name, 0 );
        write_to_buffer ( d->snoop_by, "> ", 2 );
        write_to_buffer ( d->snoop_by, d->outbuf, d->outtop );
    }

    /*
     * OS-dependent output.
     */
    return process_ansi_output ( d );
}

/*
 * Bust a prompt (player settable prompt)
 * coded by Morgenes for Aldara Mud
 */
void bust_a_prompt ( CHAR_DATA * ch )
{
    char buf[MAX_STRING_LENGTH];
    char buf2[MAX_STRING_LENGTH];
    const char *str;
    const char *i;
    char *point;
    char doors[MAX_INPUT_LENGTH];
    EXIT_DATA *pexit;
    bool found;
    const char *dir_letter[] = { "N", "E", "S", "W", "U", "D" };
    int door;

    point = buf;
    str = ch->prompt;
    if ( str == NULL || str[0] == '\0' )
    {
        sprintf ( buf, "<%dhp %dm %dmv> %s", ch->hit, ch->mana, ch->move,
                  ch->prefix );
        chsend ( buf, ch );
        return;
    }

    if ( IS_SET ( ch->comm, COMM_AFK ) )
    {
        chsend ( "<AFK> ", ch );
        return;
    }

    while ( *str != '\0' )
    {
        if ( *str != '%' )
        {
            *point++ = *str++;
            continue;
        }
        ++str;
        switch ( *str )
        {
            default:
                i = " ";
                break;
            case 'e':
                found = FALSE;
                doors[0] = '\0';
                for ( door = 0; door < 6; door++ )
                {
                    if ( ( pexit = ch->in_room->exit[door] ) != NULL &&
                         pexit->u1.to_room != NULL &&
                         ( can_see_room ( ch, pexit->u1.to_room ) ||
                           ( IS_AFFECTED ( ch, AFF_INFRARED ) &&
                             !IS_AFFECTED ( ch, AFF_BLIND ) ) ) &&
                         !IS_SET ( pexit->exit_info, EX_CLOSED ) )
                    {
                        found = TRUE;
                        strcat ( doors, dir_letter[door] );
                    }
                }
                if ( !found )
                    strcat ( buf, "none" );
                sprintf ( buf2, "%s", doors );
                i = buf2;
                break;
            case 'c':
                sprintf ( buf2, "%s", "\n\r" );
                i = buf2;
                break;
            case 'h':
                sprintf ( buf2, "%d", ch->hit );
                i = buf2;
                break;
            case 'H':
                sprintf ( buf2, "%d", ch->max_hit );
                i = buf2;
                break;
            case 'm':
                sprintf ( buf2, "%d", ch->mana );
                i = buf2;
                break;
            case 'M':
                sprintf ( buf2, "%d", ch->max_mana );
                i = buf2;
                break;
            case 'v':
                sprintf ( buf2, "%d", ch->move );
                i = buf2;
                break;
            case 'V':
                sprintf ( buf2, "%d", ch->max_move );
                i = buf2;
                break;
            case 'x':
                sprintf ( buf2, "%d", ch->exp );
                i = buf2;
                break;
            case 'X':
                sprintf ( buf2, "%d",
                          IS_NPC ( ch ) ? 0 : ( ch->level +
                                                1 ) * exp_per_level ( ch,
                                                                      ch->
                                                                      pcdata->
                                                                      points )
                          - ch->exp );
                i = buf2;
                break;
            case 'g':
                sprintf ( buf2, "%ld", ch->gold );
                i = buf2;
                break;
            case 's':
                sprintf ( buf2, "%ld", ch->silver );
                i = buf2;
                break;
            case 'a':
                if ( ch->level > 9 )
                    sprintf ( buf2, "%d", ch->alignment );
                else
                    sprintf ( buf2, "%s",
                              IS_GOOD ( ch ) ? "good" : IS_EVIL ( ch ) ?
                              "evil" : "neutral" );
                i = buf2;
                break;
            case 'r':
                if ( ch->in_room != NULL )
                    sprintf ( buf2, "%s",
                              ( ( !IS_NPC ( ch ) &&
                                  IS_SET ( ch->act, PLR_HOLYLIGHT ) ) ||
                                ( !IS_AFFECTED ( ch, AFF_BLIND ) &&
                                  !room_is_dark ( ch->in_room ) ) ) ? ch->
                              in_room->name : "darkness" );
                else
                    sprintf ( buf2, " " );
                i = buf2;
                break;
            case 'R':
                if ( IS_IMMORTAL ( ch ) && ch->in_room != NULL )
                    sprintf ( buf2, "%ld", ch->in_room->vnum );
                else
                    sprintf ( buf2, " " );
                i = buf2;
                break;
            case 'z':
                if ( IS_IMMORTAL ( ch ) && ch->in_room != NULL )
                    sprintf ( buf2, "%s", ch->in_room->area->name );
                else
                    sprintf ( buf2, " " );
                i = buf2;
                break;
            case '%':
                sprintf ( buf2, "%%" );
                i = buf2;
                break;
            case 'o':
                sprintf ( buf2, "%s", olc_ed_name ( ch ) );
                i = buf2;
                break;
            case 'O':
                sprintf ( buf2, "%s", olc_ed_vnum ( ch ) );
                i = buf2;
                break;
        }
        ++str;
        while ( ( *point = *i ) != '\0' )
            ++point, ++i;
    }
    write_to_buffer ( ch->desc, buf, point - buf );

    if ( ch->prefix[0] != '\0' )
        write_to_buffer ( ch->desc, ch->prefix, 0 );
    return;
}

/*
 * Append onto an output buffer.
 */
void write_to_buffer ( DESCRIPTOR_DATA * d, const char *txt, int length )
{
    /*
     * Find length in case caller didn't.
     */
    if ( length <= 0 )
        length = strlen ( txt );

    /*
     * Initial \n\r if needed.
     */
    if ( d->outtop == 0 && !d->fcommand )
    {
        d->outbuf[0] = '\n';
        d->outbuf[1] = '\r';
        d->outtop = 2;
    }

    /*
     * Expand the buffer as needed.
     */
    while ( d->outtop + length >= d->outsize )
    {
        char *outbuf;

        if ( d->outsize >= 32000 )
        {
            bug ( "Buffer overflow. Closing.\n\r", 0 );
            close_socket ( d );
            return;
        }
        outbuf = ( char * ) alloc_mem ( 2 * d->outsize );
        strncpy ( outbuf, d->outbuf, d->outtop );
        free_mem ( d->outbuf, d->outsize );
        d->outbuf = outbuf;
        d->outsize *= 2;
    }

    /*
     * Copy.
     */
    strncpy ( d->outbuf + d->outtop, txt, length );
    d->outtop += length;
    return;
}

/*
 * Lowest level output function.
 * Write a block of text to the file descriptor.
 * If this gives errors on very long blocks (like 'ofind all'),
 *   try lowering the max block size.
 */
bool write_to_descriptor ( int desc, char *txt, int length )
{
    int iStart;
    int nWrite;
    int nBlock;

    if ( length <= 0 )
        length = strlen ( txt );

    for ( iStart = 0; iStart < length; iStart += nWrite )
    {
        nBlock = UMIN ( length - iStart, 4096 );
        if ( ( nWrite = write ( desc, txt + iStart, nBlock ) ) < 0 )
        {
            perror ( "Write_to_descriptor" );
            return FALSE;
        }
    }

    return TRUE;
}

/*
 * Deal with sockets that haven't logged in yet.
 */
void nanny ( DESCRIPTOR_DATA * d, char *argument )
{
    DESCRIPTOR_DATA *d_old, *pd_next;
    char buf[MAX_STRING_LENGTH];
    char arg[MAX_INPUT_LENGTH];
    CHAR_DATA *ch;
    char *pwdnew;
    char *p;
    int iClass, race, i, weapon;
    bool fOld;

    /* Delete leading spaces UNLESS character is writing a note */
    if ( d->connected != CON_NOTE_TEXT )
    {
        while ( isspace ( *argument ) )
            argument++;
    }

    ch = d->character;

    switch ( d->connected )
    {

        default:
            bug ( "Nanny: bad d->connected %d.", d->connected );
            close_socket ( d );
            return;

        case CON_GET_TERM:
            switch ( argument[0] )
            {
                case 'y':
                case 'Y':
                    SET_BIT ( d->desc_flags, DESC_COLOUR );
                    write_to_buffer ( d, "{cColour Enabled...{x\n\r", 0 );
                    break;
                case 'n':
                case 'N':
                    REMOVE_BIT ( d->desc_flags, DESC_COLOUR );
                    write_to_buffer ( d, "Colour Disabled...\n\r", 0 );
                    break;
                case 't':
                case 'T':
                    write_to_buffer ( d,
                                      "\n\rThis text should be " CB_GREEN
                                      "GREEN" C_CLEAR
                                      ".\n\rThis text should be " CB_RED "RED"
                                      C_CLEAR ".\n\r", 0 );
                    write_to_buffer ( d,
                                      "\n\rDid you see colour? (Y)es, (N)o, (T)est: ",
                                      0 );
                    return;
                default:
                    write_to_buffer ( d,
                                      "Please answer (Y)es, (N)o, (T)est: ",
                                      0 );
                    return;
            }
            show_greeting ( d );
            d->connected = CON_GET_NAME;
            break;

        case CON_GET_NAME:
            if ( argument[0] == '\0' )
            {
                close_socket ( d );
                return;
            }

            argument[0] = UPPER ( argument[0] );
            if ( !check_parse_name ( argument ) )
            {
                write_to_buffer ( d, "Illegal name, try another.\n\rName: ",
                                  0 );
                return;
            }

            fOld = load_char_obj ( d, argument );
            ch = d->character;

            if ( IS_SET ( ch->act, PLR_DENY ) )
            {
                sprintf ( log_buf, "Denying access to %s@%s.", argument,
                          d->host );
                log_string ( log_buf );
                write_to_buffer ( d, "You are denied access.\n\r", 0 );
                close_socket ( d );
                return;
            }

            if ( check_ban ( d->host, BAN_PERMIT ) &&
                 !IS_SET ( ch->act, PLR_PERMIT ) )
            {
                write_to_buffer ( d,
                                  "Your site has been banned from this mud.\n\r",
                                  0 );
                close_socket ( d );
                return;
            }

            if ( check_reconnect ( d, argument, FALSE ) )
            {
                fOld = TRUE;
            }
            else
            {
                if ( wizlock && !IS_IMMORTAL ( ch ) )
                {
                    write_to_buffer ( d, "The game is wizlocked.\n\r", 0 );
                    close_socket ( d );
                    return;
                }
            }

            if ( fOld )
            {
                /* Old player */
                write_to_buffer ( d, "Password: ", 0 );
                write_to_buffer ( d, echo_off_str, 0 );
                d->connected = CON_GET_OLD_PASSWORD;
                return;
            }
            else
            {
                /* New player */
                if ( newlock )
                {
                    write_to_buffer ( d, "The game is newlocked.\n\r", 0 );
                    close_socket ( d );
                    return;
                }

                if ( check_ban ( d->host, BAN_NEWBIES ) )
                {
                    write_to_buffer ( d,
                                      "New players are not allowed from your site.\n\r",
                                      0 );
                    close_socket ( d );
                    return;
                }

                sprintf ( buf, "Did I get that right, %s (Y/N)? ", argument );
                write_to_buffer ( d, buf, 0 );
                d->connected = CON_CONFIRM_NEW_NAME;
                return;
            }
            break;

        case CON_GET_OLD_PASSWORD:
            write_to_buffer ( d, "\n\r", 2 );

            if ( strcmp
                 ( crypt ( argument, ch->pcdata->pwd ), ch->pcdata->pwd ) )
            {
                write_to_buffer ( d, "Wrong password.\n\r", 0 );
                close_socket ( d );
                return;
            }

            write_to_buffer ( d, echo_on_str, 0 );

            if ( check_playing ( d, ch->name ) )
                return;

            if ( check_reconnect ( d, ch->name, TRUE ) )
                return;

            sprintf ( log_buf, "%s@%s has connected.", ch->name, d->host );
            log_string ( log_buf );
            wiznet ( log_buf, NULL, NULL, WIZ_SITES, 0, get_trust ( ch ) );

            if ( IS_IMMORTAL ( ch ) )
            {
                do_function ( ch, &do_help, "imotd" );
                d->connected = CON_READ_IMOTD;
            }
            else
            {
                do_function ( ch, &do_help, "motd" );
                d->connected = CON_READ_MOTD;
            }
            break;

/* RT code for breaking link */

        case CON_BREAK_CONNECT:
            switch ( *argument )
            {
                case 'y':
                case 'Y':
                    for ( d_old = descriptor_list; d_old != NULL;
                          d_old = pd_next )
                    {
                        pd_next = d_old->next;
                        if ( d_old == d || d_old->character == NULL )
                            continue;

                        if ( str_cmp
                             ( ch->name,
                               d_old->original ? d_old->original->
                               name : d_old->character->name ) )
                            continue;

                        close_socket ( d_old );
                    }
                    if ( check_reconnect ( d, ch->name, TRUE ) )
                        return;
                    write_to_buffer ( d,
                                      "Reconnect attempt failed.\n\rName: ",
                                      0 );
                    if ( d->character != NULL )
                    {
                        free_char ( d->character );
                        d->character = NULL;
                    }
                    d->connected = CON_GET_NAME;
                    break;

                case 'n':
                case 'N':
                    write_to_buffer ( d, "Name: ", 0 );
                    if ( d->character != NULL )
                    {
                        free_char ( d->character );
                        d->character = NULL;
                    }
                    d->connected = CON_GET_NAME;
                    break;

                default:
                    write_to_buffer ( d, "Please type Y or N? ", 0 );
                    break;
            }
            break;

        case CON_CONFIRM_NEW_NAME:
            switch ( *argument )
            {
                case 'y':
                case 'Y':
                    sprintf ( buf,
                              "New character.\n\rGive me a password for %s: %s",
                              ch->name, echo_off_str );
                    write_to_buffer ( d, buf, 0 );
                    d->connected = CON_GET_NEW_PASSWORD;
                    break;

                case 'n':
                case 'N':
                    write_to_buffer ( d, "Ok, what IS it, then? ", 0 );
                    free_char ( d->character );
                    d->character = NULL;
                    d->connected = CON_GET_NAME;
                    break;

                default:
                    write_to_buffer ( d, "Please type Yes or No? ", 0 );
                    break;
            }
            break;

        case CON_GET_NEW_PASSWORD:
            write_to_buffer ( d, "\n\r", 2 );

            if ( strlen ( argument ) < 5 )
            {
                write_to_buffer ( d,
                                  "Password must be at least five characters long.\n\rPassword: ",
                                  0 );
                return;
            }

            pwdnew = crypt ( argument, ch->name );
            for ( p = pwdnew; *p != '\0'; p++ )
            {
                if ( *p == '~' )
                {
                    write_to_buffer ( d,
                                      "New password not acceptable, try again.\n\rPassword: ",
                                      0 );
                    return;
                }
            }

            free_string ( ch->pcdata->pwd );
            ch->pcdata->pwd = str_dup ( pwdnew );
            write_to_buffer ( d, "Please retype password: ", 0 );
            d->connected = CON_CONFIRM_NEW_PASSWORD;
            break;

        case CON_CONFIRM_NEW_PASSWORD:
            write_to_buffer ( d, "\n\r", 2 );

            if ( strcmp
                 ( crypt ( argument, ch->pcdata->pwd ), ch->pcdata->pwd ) )
            {
                write_to_buffer ( d,
                                  "Passwords don't match.\n\rRetype password: ",
                                  0 );
                d->connected = CON_GET_NEW_PASSWORD;
                return;
            }

            write_to_buffer ( d, echo_on_str, 0 );
            write_to_buffer ( d, "The following races are available:\n\r  ",
                              0 );
            for ( race = 1; race_table[race].name != NULL; race++ )
            {
                if ( !race_table[race].pc_race )
                    break;
                write_to_buffer ( d, race_table[race].name, 0 );
                write_to_buffer ( d, " ", 1 );
            }
            write_to_buffer ( d, "\n\r", 0 );
            write_to_buffer ( d,
                              "What is your race (help for more information)? ",
                              0 );
            d->connected = CON_GET_NEW_RACE;
            break;

        case CON_GET_NEW_RACE:
            one_argument ( argument, arg );

            if ( !strcmp ( arg, "help" ) )
            {
                argument = one_argument ( argument, arg );
                if ( argument[0] == '\0' )
                    do_function ( ch, &do_help, "race help" );
                else
                    do_function ( ch, &do_help, argument );
                write_to_buffer ( d,
                                  "What is your race (help for more information)? ",
                                  0 );
                break;
            }

            race = race_lookup ( argument );

            if ( race == 0 || !race_table[race].pc_race )
            {
                write_to_buffer ( d, "That is not a valid race.\n\r", 0 );
                write_to_buffer ( d,
                                  "The following races are available:\n\r  ",
                                  0 );
                for ( race = 1; race_table[race].name != NULL; race++ )
                {
                    if ( !race_table[race].pc_race )
                        break;
                    write_to_buffer ( d, race_table[race].name, 0 );
                    write_to_buffer ( d, " ", 1 );
                }
                write_to_buffer ( d, "\n\r", 0 );
                write_to_buffer ( d,
                                  "What is your race? (help for more information) ",
                                  0 );
                break;
            }

            ch->race = race;
            /* initialize stats */
            for ( i = 0; i < MAX_STATS; i++ )
                ch->perm_stat[i] = pc_race_table[race].stats[i];
            ch->affected_by = ch->affected_by | race_table[race].aff;
            ch->imm_flags = ch->imm_flags | race_table[race].imm;
            ch->res_flags = ch->res_flags | race_table[race].res;
            ch->vuln_flags = ch->vuln_flags | race_table[race].vuln;
            ch->form = race_table[race].form;
            ch->parts = race_table[race].parts;

            /* add skills */
            for ( i = 0; i < 5; i++ )
            {
                if ( pc_race_table[race].skills[i] == NULL )
                    break;
                group_add ( ch, pc_race_table[race].skills[i], FALSE );
            }
            /* add cost */
            ch->pcdata->points = pc_race_table[race].points;
            ch->size = pc_race_table[race].size;

            write_to_buffer ( d, "What is your sex (M/F)? ", 0 );
            d->connected = CON_GET_NEW_SEX;
            break;

        case CON_GET_NEW_SEX:
            switch ( argument[0] )
            {
                case 'm':
                case 'M':
                    ch->sex = SEX_MALE;
                    ch->pcdata->true_sex = SEX_MALE;
                    break;
                case 'f':
                case 'F':
                    ch->sex = SEX_FEMALE;
                    ch->pcdata->true_sex = SEX_FEMALE;
                    break;
                default:
                    write_to_buffer ( d,
                                      "That's not a sex.\n\rWhat IS your sex? ",
                                      0 );
                    return;
            }

            strcpy ( buf, "Select a class [" );
            for ( iClass = 0; iClass < MAX_CLASS; iClass++ )
            {
                if ( iClass > 0 )
                    strcat ( buf, " " );
                strcat ( buf, class_table[iClass].name );
            }
            strcat ( buf, "]: " );
            write_to_buffer ( d, buf, 0 );
            d->connected = CON_GET_NEW_CLASS;
            break;

        case CON_GET_NEW_CLASS:
            iClass = class_lookup ( argument );

            if ( iClass == -1 )
            {
                write_to_buffer ( d,
                                  "That's not a class.\n\rWhat IS your class? ",
                                  0 );
                return;
            }

            ch->Class = iClass;

            sprintf ( log_buf, "%s@%s new player.", ch->name, d->host );
            log_string ( log_buf );
            wiznet ( "Newbie alert!  $N sighted.", ch, NULL, WIZ_NEWBIE, 0,
                     0 );
            wiznet ( log_buf, NULL, NULL, WIZ_SITES, 0, get_trust ( ch ) );

            write_to_buffer ( d, "\n\r", 2 );
            write_to_buffer ( d, "You may be good, neutral, or evil.\n\r",
                              0 );
            write_to_buffer ( d, "Which alignment (G/N/E)? ", 0 );
            d->connected = CON_GET_ALIGNMENT;
            break;

        case CON_GET_ALIGNMENT:
            switch ( argument[0] )
            {
                case 'g':
                case 'G':
                    ch->alignment = 750;
                    break;
                case 'n':
                case 'N':
                    ch->alignment = 0;
                    break;
                case 'e':
                case 'E':
                    ch->alignment = -750;
                    break;
                default:
                    write_to_buffer ( d, "That's not a valid alignment.\n\r",
                                      0 );
                    write_to_buffer ( d, "Which alignment (G/N/E)? ", 0 );
                    return;
            }

            write_to_buffer ( d, "\n\r", 0 );

            group_add ( ch, "rom basics", FALSE );
            group_add ( ch, class_table[ch->Class].base_group, FALSE );
            ch->pcdata->learned[gsn_recall] = 50;
            write_to_buffer ( d,
                              "Do you wish to customize this character?\n\r",
                              0 );
            write_to_buffer ( d,
                              "Customization takes time, but allows a wider range of skills and abilities.\n\r",
                              0 );
            write_to_buffer ( d, "Customize (Y/N)? ", 0 );
            d->connected = CON_DEFAULT_CHOICE;
            break;

        case CON_DEFAULT_CHOICE:
            write_to_buffer ( d, "\n\r", 2 );
            switch ( argument[0] )
            {
                case 'y':
                case 'Y':
                    ch->gen_data = new_gen_data (  );
                    ch->gen_data->points_chosen = ch->pcdata->points;
                    do_function ( ch, &do_help, "group header" );
                    list_group_costs ( ch );
                    write_to_buffer ( d,
                                      "You already have the following skills:\n\r",
                                      0 );
                    do_function ( ch, &do_skills, "" );
                    do_function ( ch, &do_help, "menu choice" );
                    d->connected = CON_GEN_GROUPS;
                    break;
                case 'n':
                case 'N':
                    group_add ( ch, class_table[ch->Class].default_group,
                                TRUE );
                    write_to_buffer ( d, "\n\r", 2 );
                    write_to_buffer ( d,
                                      "Please pick a weapon from the following choices:\n\r",
                                      0 );
                    buf[0] = '\0';
                    for ( i = 0; weapon_table[i].name != NULL; i++ )
                        if ( ch->pcdata->learned[*weapon_table[i].gsn] > 0 )
                        {
                            strcat ( buf, weapon_table[i].name );
                            strcat ( buf, " " );
                        }
                    strcat ( buf, "\n\rYour choice? " );
                    write_to_buffer ( d, buf, 0 );
                    d->connected = CON_PICK_WEAPON;
                    break;
                default:
                    write_to_buffer ( d, "Please answer (Y/N)? ", 0 );
                    return;
            }
            break;

        case CON_PICK_WEAPON:
            write_to_buffer ( d, "\n\r", 2 );
            weapon = weapon_lookup ( argument );
            if ( weapon == -1 ||
                 ch->pcdata->learned[*weapon_table[weapon].gsn] <= 0 )
            {
                write_to_buffer ( d,
                                  "That's not a valid selection. Choices are:\n\r",
                                  0 );
                buf[0] = '\0';
                for ( i = 0; weapon_table[i].name != NULL; i++ )
                    if ( ch->pcdata->learned[*weapon_table[i].gsn] > 0 )
                    {
                        strcat ( buf, weapon_table[i].name );
                        strcat ( buf, " " );
                    }
                strcat ( buf, "\n\rYour choice? " );
                write_to_buffer ( d, buf, 0 );
                return;
            }

            ch->pcdata->learned[*weapon_table[weapon].gsn] = 40;
            write_to_buffer ( d, "\n\r", 2 );
            do_function ( ch, &do_help, "motd" );
            d->connected = CON_READ_MOTD;
            break;

        case CON_GEN_GROUPS:
            chsend ( "\n\r", ch );

            if ( !str_cmp ( argument, "done" ) )
            {
                if ( ch->pcdata->points == pc_race_table[ch->race].points )
                {
                    chsend ( "You didn't pick anything.\n\r", ch );
                    break;
                }

                if ( ch->pcdata->points <=
                     40 + pc_race_table[ch->race].points )
                {
                    sprintf ( buf,
                              "You must take at least %d points of skills and groups",
                              40 + pc_race_table[ch->race].points );
                    chsend ( buf, ch );
                    break;
                }

                sprintf ( buf, "Creation points: %d\n\r",
                          ch->pcdata->points );
                chsend ( buf, ch );
                sprintf ( buf, "Experience per level: %d\n\r",
                          exp_per_level ( ch, ch->gen_data->points_chosen ) );
                if ( ch->pcdata->points < 40 )
                    ch->train = ( 40 - ch->pcdata->points + 1 ) / 2;
                free_gen_data ( ch->gen_data );
                ch->gen_data = NULL;
                chsend ( buf, ch );
                write_to_buffer ( d, "\n\r", 2 );
                write_to_buffer ( d,
                                  "Please pick a weapon from the following choices:\n\r",
                                  0 );
                buf[0] = '\0';
                for ( i = 0; weapon_table[i].name != NULL; i++ )
                    if ( ch->pcdata->learned[*weapon_table[i].gsn] > 0 )
                    {
                        strcat ( buf, weapon_table[i].name );
                        strcat ( buf, " " );
                    }
                strcat ( buf, "\n\rYour choice? " );
                write_to_buffer ( d, buf, 0 );
                d->connected = CON_PICK_WEAPON;
                break;
            }

            if ( !parse_gen_groups ( ch, argument ) )
                chsend
                    ( "Choices are: list,learned,premise,add,drop,info,help, and done.\n\r",
                      ch );

            do_function ( ch, &do_help, "menu choice" );
            break;

        case CON_READ_IMOTD:
            write_to_buffer ( d, "\n\r", 2 );
            do_function ( ch, &do_help, "motd" );
            d->connected = CON_READ_MOTD;
            break;

            /* states for new note system, (c)1995-96 erwin@andreasen.org */
            /* ch MUST be PC here; have nwrite check for PC status! */

        case CON_NOTE_TO:
            handle_con_note_to ( d, argument );
            break;

        case CON_NOTE_SUBJECT:
            handle_con_note_subject ( d, argument );
            break;              /* subject */

        case CON_NOTE_EXPIRE:
            handle_con_note_expire ( d, argument );
            break;

        case CON_NOTE_TEXT:
            handle_con_note_text ( d, argument );
            break;

        case CON_NOTE_FINISH:
            handle_con_note_finish ( d, argument );
            break;

        case CON_READ_MOTD:
            if ( ch->pcdata == NULL || ch->pcdata->pwd[0] == '\0' )
            {
                write_to_buffer ( d, "Warning! Null password!\n\r", 0 );
                write_to_buffer ( d,
                                  "Please report old password with bug.\n\r",
                                  0 );
                write_to_buffer ( d,
                                  "Type 'password null <new password>' to fix.\n\r",
                                  0 );
            }

            write_to_buffer ( d,
                              "\n\rWelcome to ROM 2.4.  Please do not feed the mobiles.\n\r",
                              0 );
            ch->next = char_list;
            char_list = ch;
            d->connected = CON_PLAYING;
            reset_char ( ch );

            if ( ch->level == 0 )
            {

                ch->perm_stat[class_table[ch->Class].attr_prime] += 3;

                ch->level = 1;
                ch->exp = exp_per_level ( ch, ch->pcdata->points );
                ch->hit = ch->max_hit;
                ch->mana = ch->max_mana;
                ch->move = ch->max_move;
                ch->train = 3;
                ch->practice = 5;
                sprintf ( buf, "the %s",
                          title_table[ch->Class][ch->level][ch->sex ==
                                                            SEX_FEMALE ? 1 :
                                                            0] );
                set_title ( ch, buf );

                do_function ( ch, &do_outfit, "" );
                obj_to_char ( create_object
                              ( get_obj_index ( OBJ_VNUM_MAP ), 0 ), ch );

                char_to_room ( ch, get_room_index ( ROOM_VNUM_SCHOOL ) );
                chsend ( "\n\r", ch );
                do_function ( ch, &do_help, "newbie info" );
                chsend ( "\n\r", ch );
            }
            else if ( ch->in_room != NULL )
            {
                char_to_room ( ch, ch->in_room );
            }
            else if ( IS_IMMORTAL ( ch ) )
            {
                char_to_room ( ch, get_room_index ( ROOM_VNUM_CHAT ) );
            }
            else
            {
                char_to_room ( ch, get_room_index ( ROOM_VNUM_TEMPLE ) );
            }

            act ( "$n has entered the game.", ch, NULL, NULL, TO_ROOM );
            do_function ( ch, &do_look, "auto" );

            wiznet ( "$N has left real life behind.", ch, NULL, WIZ_LOGINS,
                     WIZ_SITES, get_trust ( ch ) );

            if ( ch->pet != NULL )
            {
                char_to_room ( ch->pet, ch->in_room );
                act ( "$n has entered the game.", ch->pet, NULL, NULL,
                      TO_ROOM );
            }

            do_function ( ch, &do_board, "" );
            break;
    }

    return;
}

/*
 * Parse a name for acceptability.
 */
bool check_parse_name ( char *name )
{
    int clan;

    /*
     * Reserved words.
     */
    if ( is_exact_name
         ( name,
           "all auto immortal self someone something the you loner none" ) )
    {
        return FALSE;
    }

    /* check clans */
    for ( clan = 0; clan < MAX_CLAN; clan++ )
    {
        if ( LOWER ( name[0] ) == LOWER ( clan_table[clan].name[0] ) &&
             !str_cmp ( name, clan_table[clan].name ) )
            return FALSE;
    }

    if ( str_cmp ( capitalize ( name ), "Alander" ) &&
         ( !str_prefix ( "Alan", name ) || !str_suffix ( "Alander", name ) ) )
        return FALSE;

    /*
     * Length restrictions.
     */

    if ( strlen ( name ) < 2 )
        return FALSE;

    if ( strlen ( name ) > 12 )
        return FALSE;

    /*
     * Alphanumerics only.
     * Lock out IllIll twits.
     */
    {
        char *pc;
        bool fIll, adjcaps = FALSE, cleancaps = FALSE;
        uint total_caps = 0;

        fIll = TRUE;
        for ( pc = name; *pc != '\0'; pc++ )
        {
            if ( !isalpha ( *pc ) )
                return FALSE;

            if ( isupper ( *pc ) )  /* ugly anti-caps hack */
            {
                if ( adjcaps )
                    cleancaps = TRUE;
                total_caps++;
                adjcaps = TRUE;
            }
            else
                adjcaps = FALSE;

            if ( LOWER ( *pc ) != 'i' && LOWER ( *pc ) != 'l' )
                fIll = FALSE;
        }

        if ( fIll )
            return FALSE;

        if ( cleancaps ||
             ( total_caps > ( strlen ( name ) ) / 2 && strlen ( name ) < 3 ) )
            return FALSE;
    }

    /*
     * Prevent players from naming themselves after mobs.
     */
    {
        MOB_INDEX_DATA *pMobIndex;
        int iHash;

        for ( iHash = 0; iHash < MAX_KEY_HASH; iHash++ )
        {
            for ( pMobIndex = mob_index_hash[iHash]; pMobIndex != NULL;
                  pMobIndex = pMobIndex->next )
            {
                if ( is_name ( name, pMobIndex->player_name ) )
                    return FALSE;
            }
        }
    }

    return TRUE;
}

/*
 * Look for link-dead player to reconnect.
 */
bool check_reconnect ( DESCRIPTOR_DATA * d, char *name, bool fConn )
{
    CHAR_DATA *ch;

    for ( ch = char_list; ch != NULL; ch = ch->next )
    {
        if ( !IS_NPC ( ch ) && ( !fConn || ch->desc == NULL ) &&
             !str_cmp ( d->character->name, ch->name ) )
        {
            if ( fConn == FALSE )
            {
                free_string ( d->character->pcdata->pwd );
                d->character->pcdata->pwd = str_dup ( ch->pcdata->pwd );
            }
            else
            {
                free_char ( d->character );
                d->character = ch;
                ch->desc = d;
                ch->timer = 0;
                chsend ( "Reconnecting. Type replay to see missed tells.\n\r",
                         ch );
                act ( "$n has reconnected.", ch, NULL, NULL, TO_ROOM );

                sprintf ( log_buf, "%s@%s reconnected.", ch->name, d->host );
                log_string ( log_buf );
                wiznet ( "$N groks the fullness of $S link.", ch, NULL,
                         WIZ_LINKS, 0, 0 );
                d->connected = CON_PLAYING;
                /* Inform the character of a note in progress and the possbility
                 * of continuation!
                 */
                if ( ch->pcdata->in_progress )
                    chsend
                        ( "You have a note in progress. Type NOTE WRITE to continue it.\n\r",
                          ch );
            }
            return TRUE;
        }
    }

    return FALSE;
}

/*
 * Check if already playing.
 */
bool check_playing ( DESCRIPTOR_DATA * d, char *name )
{
    DESCRIPTOR_DATA *dold;

    for ( dold = descriptor_list; dold; dold = dold->next )
    {
        if ( dold != d && dold->character != NULL &&
             dold->connected != CON_GET_NAME &&
             dold->connected != CON_GET_OLD_PASSWORD &&
             !str_cmp ( name,
                        dold->original ? dold->original->name : dold->
                        character->name ) )
        {
            write_to_buffer ( d, "That character is already playing.\n\r",
                              0 );
            write_to_buffer ( d, "Do you wish to connect anyway (Y/N)?", 0 );
            d->connected = CON_BREAK_CONNECT;
            return TRUE;
        }
    }

    return FALSE;
}

void stop_idling ( CHAR_DATA * ch )
{
    if ( ch == NULL || ch->desc == NULL || ch->desc->connected != CON_PLAYING
         || ch->was_in_room == NULL ||
         ch->in_room != get_room_index ( ROOM_VNUM_LIMBO ) )
        return;

    ch->timer = 0;
    char_from_room ( ch );
    char_to_room ( ch, ch->was_in_room );
    ch->was_in_room = NULL;
    act ( "$n has returned from the void.", ch, NULL, NULL, TO_ROOM );
    return;
}

/*
 * Write to one char.
 */
void chsend ( const char *txt, CHAR_DATA * ch )
{
    if ( txt != NULL && ch->desc != NULL )
        write_to_buffer ( ch->desc, txt, strlen ( txt ) );
    return;
}

/*
 * Send a page to one char.
 */
void page_to_char ( const char *txt, CHAR_DATA * ch )
{
    if ( txt == NULL || ch->desc == NULL )
        return;

    if ( ch->lines == 0 )
    {
        chsend ( txt, ch );
        return;
    }

    ch->desc->showstr_head = ( char * ) alloc_mem ( strlen ( txt ) + 1 );
    strcpy ( ch->desc->showstr_head, txt );
    ch->desc->showstr_point = ch->desc->showstr_head;
    show_string ( ch->desc, "" );
}

/* string pager */
void show_string ( struct descriptor_data *d, char *input )
{
    char buffer[4 * MAX_STRING_LENGTH];
    char buf[MAX_INPUT_LENGTH];
    register char *scan, *chk;
    int lines = 0, toggle = 1;
    int show_lines;

    one_argument ( input, buf );
    if ( buf[0] != '\0' )
    {
        if ( d->showstr_head )
        {
            free_mem ( d->showstr_head, strlen ( d->showstr_head ) );
            d->showstr_head = 0;
        }
        d->showstr_point = 0;
        return;
    }

    if ( d->character )
        show_lines = d->character->lines;
    else
        show_lines = 0;

    for ( scan = buffer;; scan++, d->showstr_point++ )
    {
        if ( ( ( *scan = *d->showstr_point ) == '\n' || *scan == '\r' ) &&
             ( toggle = -toggle ) < 0 )
            lines++;

        else if ( !*scan || ( show_lines > 0 && lines >= show_lines ) )
        {
            *scan = '\0';
            write_to_buffer ( d, buffer, strlen ( buffer ) );
            for ( chk = d->showstr_point; isspace ( *chk ); chk++ );
            {
                if ( !*chk )
                {
                    if ( d->showstr_head )
                    {
                        free_mem ( d->showstr_head,
                                   strlen ( d->showstr_head ) );
                        d->showstr_head = 0;
                    }
                    d->showstr_point = 0;
                }
            }
            return;
        }
    }
    return;
}

/* quick sex fixer */
void fix_sex ( CHAR_DATA * ch )
{
    if ( ch->sex < 0 || ch->sex > 2 )
        ch->sex = IS_NPC ( ch ) ? 0 : ch->pcdata->true_sex;
}

void act_new ( const char *format, CHAR_DATA * ch, const void *arg1,
               const void *arg2, int type, int min_pos )
{
    static char *const he_she[] = { "it", "he", "she" };
    static char *const him_her[] = { "it", "him", "her" };
    static char *const his_her[] = { "its", "his", "her" };

    char buf[MAX_STRING_LENGTH];
    char fname[MAX_INPUT_LENGTH];
    CHAR_DATA *to;
    CHAR_DATA *vch = ( CHAR_DATA * ) arg2;
    OBJ_DATA *obj1 = ( OBJ_DATA * ) arg1;
    OBJ_DATA *obj2 = ( OBJ_DATA * ) arg2;
    const char *str;
    const char *i;
    char *point;

    /*
     * Discard null and zero-length messages.
     */
    if ( format == NULL || format[0] == '\0' )
        return;

    /* discard null rooms and chars */
    if ( ch == NULL || ch->in_room == NULL )
        return;

    to = ch->in_room->people;
    if ( type == TO_VICT )
    {
        if ( vch == NULL )
        {
            bug ( "Act: null vch with TO_VICT.", 0 );
            return;
        }

        if ( vch->in_room == NULL )
            return;

        to = vch->in_room->people;
    }

    for ( ; to != NULL; to = to->next_in_room )
    {
        if ( ( !IS_NPC ( to ) && to->desc == NULL ) ||
             ( IS_NPC ( to ) && !HAS_TRIGGER ( to, TRIG_ACT ) ) ||
             to->position < min_pos )
            continue;

        if ( ( type == TO_CHAR ) && to != ch )
            continue;
        if ( type == TO_VICT && ( to != vch || to == ch ) )
            continue;
        if ( type == TO_ROOM && to == ch )
            continue;
        if ( type == TO_NOTVICT && ( to == ch || to == vch ) )
            continue;

        point = buf;
        str = format;
        while ( *str != '\0' )
        {
            if ( *str != '$' )
            {
                *point++ = *str++;
                continue;
            }
            ++str;

            if ( arg2 == NULL && *str >= 'A' && *str <= 'Z' )
            {
                bug ( "Act: missing arg2 for code %d.", *str );
                i = " <@@@> ";
            }
            else
            {
                switch ( *str )
                {
                    default:
                        bug ( "Act: bad code %d.", *str );
                        i = " <@@@> ";
                        break;
                        /* Thx alex for 't' idea */
                    case 't':
                        i = ( char * ) arg1;
                        break;
                    case 'T':
                        i = ( char * ) arg2;
                        break;
                    case 'n':
                        i = PERS ( ch, to );
                        break;
                    case 'N':
                        i = PERS ( vch, to );
                        break;
                    case 'e':
                        i = he_she[URANGE ( 0, ch->sex, 2 )];
                        break;
                    case 'E':
                        i = he_she[URANGE ( 0, vch->sex, 2 )];
                        break;
                    case 'm':
                        i = him_her[URANGE ( 0, ch->sex, 2 )];
                        break;
                    case 'M':
                        i = him_her[URANGE ( 0, vch->sex, 2 )];
                        break;
                    case 's':
                        i = his_her[URANGE ( 0, ch->sex, 2 )];
                        break;
                    case 'S':
                        i = his_her[URANGE ( 0, vch->sex, 2 )];
                        break;

                    case 'p':
                        i = can_see_obj ( to,
                                          obj1 ) ? obj1->
                            short_descr : "something";
                        break;

                    case 'P':
                        i = can_see_obj ( to,
                                          obj2 ) ? obj2->
                            short_descr : "something";
                        break;

                    case 'd':
                        if ( arg2 == NULL || ( ( char * ) arg2 )[0] == '\0' )
                        {
                            i = "door";
                        }
                        else
                        {
                            one_argument ( ( char * ) arg2, fname );
                            i = fname;
                        }
                        break;
                }
            }

            ++str;
            while ( ( *point = *i ) != '\0' )
                ++point, ++i;
        }

        *point++ = '\n';
        *point++ = '\r';
        *point = '\0';
        buf[0] = UPPER ( buf[0] );
        if ( to->desc != NULL )
        {
            if ( to->desc == CON_PLAYING )
                write_to_buffer ( to->desc, buf, point - buf );
        }
        else if ( MOBtrigger )
            mp_act_trigger ( buf, to, ch, arg1, arg2, TRIG_ACT );
    }
    return;
}

/* source: EOD, by John Booth <???> */

void chprintf ( CHAR_DATA * ch, char *fmt, ... )
{
    char buf[MAX_STRING_LENGTH];
    va_list args;
    va_start ( args, fmt );
    vsprintf ( buf, fmt, args );
    va_end ( args );

    chsend ( buf, ch );
}

void bugf ( char *fmt, ... )
{
    char buf[2 * MSL];
    va_list args;
    va_start ( args, fmt );
    vsprintf ( buf, fmt, args );
    va_end ( args );

    bug ( buf, 0 );
}

void logf ( char *fmt, ... )
{
    char buf[2 * MSL];
    va_list args;
    va_start ( args, fmt );
    vsprintf ( buf, fmt, args );
    va_end ( args );

    log_string ( buf );
}

#if !defined(WIN32)
// See sample script at bottom, provided by Erwin Andreasen
#define	CORE_EXAMINE_SCRIPT	"../corefiles/gdbscript"

void halt_mud ( int sig )
{
    DESCRIPTOR_DATA *d;
    CHAR_DATA *ch;
    extern char last_command2[MAX_INPUT_LENGTH];
    extern int last_descriptor;
    struct sigaction default_action;
    int i;
    pid_t forkpid;

    wait ( NULL );
    if ( !crashed )
    {
        crashed++;
        fprintf ( stderr, "GAME CRASHED (SIGNAL %d).\rLast command: %s\r",
                  sig, last_command );
        // Inform last command typer that he caused the crash
        if ( strlen ( last_command2 ) )
        {
            write_to_descriptor ( last_descriptor,
                                  "\n\rThe last command you typed, '", 0 );
            write_to_descriptor ( last_descriptor, last_command2, 0 );
            write_to_descriptor ( last_descriptor,
                                  "', might have caused this crash.\n\r"
                                  "Please note any unusual circumstances to IMP and avoid using that command.\n\r",
                                  0 );
        }
        for ( d = descriptor_list; d != NULL; d = d_next )
        {
            d_next = d->next;
            ch = CH ( d );
            if ( !ch )
            {
                close_socket ( d );
                continue;
            }
            if ( IS_NPC ( ch ) )
                continue;
            write_to_descriptor ( d->descriptor,
                                  "\n\rThe mud has CRASHED.\007\n\r", 0 );
        }

        // try to save all characters - save_char_obj has sanity checking
        for ( d = descriptor_list; d != NULL; d = d_next )
        {
            d_next = d->next;
            ch = CH ( d );
            if ( !ch )
            {
                close_socket ( d );
                continue;
            }
            save_char_obj ( ch );
        }

        // success - proceed with fork/copyover plan.  Otherwise will go to
        // next section and crash with a full reboot to recover
        if ( ( forkpid = fork (  ) ) > 0 )
        {
            // Parent process copyover and exit 
            waitpid ( forkpid, NULL, WNOHANG | WUNTRACED );
            // this requires you to add an "if (ch)" before the send_to_char
            // statements in do_copyover.
            do_copyover ( NULL, "" );
            exit ( 0 );
        }
        else if ( forkpid < 0 )
        {
            exit ( 1 );
        }
        // Child process proceed to dump
        // Close all files!
        for ( i = 255; i >= 0; i-- )
            close ( i );

        // Dup /dev/null to STD{IN,OUT,ERR}
        open ( "/dev/null", O_RDWR );
        dup ( 0 );
        dup ( 0 );

        default_action.sa_handler = SIG_DFL;
        sigaction ( sig, &default_action, NULL );

        // I run different scripts depending on my port
        if ( !fork (  ) )
        {
            execl ( CORE_EXAMINE_SCRIPT, CORE_EXAMINE_SCRIPT,
                    ( char * ) NULL );
            exit ( 0 );
        }
        else
            return;
        raise ( sig );
    }

    if ( crashed == 1 )
    {
        crashed++;

        for ( d = descriptor_list; d != NULL; d = d_next )
        {
            d_next = d->next;
            ch = d->original ? d->original : d->character;
            if ( ch == NULL )
            {
                close_socket ( d );
                continue;
            }
            if ( IS_NPC ( ch ) )
                continue;
            write_to_descriptor ( d->descriptor,
                                  "** Error saving character files; conducting full reboot. **\007\n\r",
                                  0 );
            close_socket ( d );
            continue;
        }
        fprintf ( stderr, "CHARACTERS NOT SAVED.\r" );
        default_action.sa_handler = SIG_DFL;
        sigaction ( sig, &default_action, NULL );

        if ( !fork (  ) )
        {
            kill ( getppid (  ), sig );
            exit ( 1 );
        }
        else
            return;
        raise ( sig );
    }

    if ( crashed == 2 )
    {
        crashed++;
        fprintf ( stderr, "TOTAL GAME CRASH." );
        default_action.sa_handler = SIG_DFL;
        sigaction ( sig, &default_action, NULL );

        if ( !fork (  ) )
        {
            kill ( getppid (  ), sig );
            exit ( 1 );
        }
        else
            return;
        raise ( sig );
    }

    if ( crashed == 3 )
    {
        default_action.sa_handler = SIG_DFL;
        sigaction ( sig, &default_action, NULL );

        if ( !fork (  ) )
        {
            kill ( getppid (  ), sig );
            exit ( 1 );
        }
        else
            return;
        raise ( sig );
    }
}
#endif