/***************************************************************************
* 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. *
***************************************************************************/
/*
* 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
*/
#if defined(macintosh)
#include <types.h>
#include <time.h>
#else
#include <sys/types.h>
#include <sys/time.h>
#endif
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <ctype.h>
#include <errno.h>
#include "merc.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
/*
* Socket and TCP/IP stuff.
*/
#if defined(macintosh) || defined(MSDOS)
const char echo_off_str [] = { '\0' };
const char echo_on_str [] = { '\0' };
const char go_ahead_str [] = { '\0' };
#endif
#if defined(unix)
#include <fcntl.h>
#include <netdb.h>
#include <netinet/in.h>
#include <sys/socket.h>
#include <arpa/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' };
#endif
/*
* 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(linux)
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 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 socket args( ( int domain, int type, int protocol ) );
int write args( ( int fd, char *buf, int nbyte ) );
#endif
#if defined(macintosh)
#include <console.h>
struct timeval
{
time_t tv_sec;
time_t tv_usec;
};
#if !defined(isascii)
#define isascii(c) ( (c) < 0200 )
#endif
static long theKeys [4];
int gettimeofday args( ( struct timeval *tp, void *tzp ) );
#endif
#if defined(MIPS_OS)
extern int errno;
#endif
#if defined(MSDOS)
int gettimeofday args( ( struct timeval *tp, void *tzp ) );
int kbhit args( ( void ) );
#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 ) );
void srandom args( ( long seed ) );
int write args( ( int fd, char *buf, int nbyte ) );
#endif
#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 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 ) );
void srandom args( ( int seed ) );
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_free; /* Free list for descriptors */
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 */
char str_boot_time[MAX_INPUT_LENGTH];
long current_time; /* Time of this pulse */
/*
* OS-dependent local functions.
*/
#if defined(macintosh) || defined(MSDOS)
void game_loop_mac_msdos args( ( void ) );
bool read_from_descriptor args( ( DESCRIPTOR_DATA *d ) );
bool write_to_descriptor args( ( int desc, char *txt, int length ) );
#endif
#if defined(unix)
void game_loop_unix args( ( int control ) );
int init_socket args( ( int port ) );
void new_descriptor args( ( int control ) );
bool read_from_descriptor args( ( DESCRIPTOR_DATA *d ) );
bool write_to_descriptor args( ( int desc, char *txt, int length ) );
#endif
/*
* 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 ) );
int main( int argc, char **argv )
{
struct timeval now_time;
int port;
#if defined(unix)
int control;
#endif
/*
* Memory debugging if needed.
*/
#if defined(MALLOC_DEBUG)
malloc_debug( 2 );
#endif
/*
* Init time.
*/
gettimeofday( &now_time, NULL );
current_time = now_time.tv_sec;
strcpy( str_boot_time, ctime( ¤t_time ) );
#if defined(__hpux) || defined(macintosh)
srand( current_time );
#else
srandom( current_time );
#endif
/*
* Macintosh console initialization.
*/
#if defined(macintosh)
console_options.nrows = 31;
cshow( stdout );
csetmode( C_RAW, stdin );
cecho2file( "log file", 1, stderr );
#endif
/*
* Reserve one channel for our use.
*/
if ( ( fpReserve = fopen( 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 );
}
}
/*
* Run the game.
*/
#if defined(macintosh) || defined(MSDOS)
boot_db( );
log_string( "Merc is ready to rock." );
game_loop_mac_msdos( );
#endif
#if defined(unix)
control = init_socket( port );
boot_db( );
sprintf( log_buf, "Merc is ready to rock on port %d.", port );
log_string( log_buf );
game_loop_unix( control );
#endif
/*
* That's all, folks.
*/
log_string( "Normal termination of game." );
exit( 0 );
return 0;
}
#if defined(unix)
int init_socket( int port )
{
static struct sockaddr_in sa_zero;
struct sockaddr_in sa;
int x;
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" );
exit( 1 );
}
#if defined(SO_DONTLINGER)
{
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" );
exit( 1 );
}
}
#endif
sa = sa_zero;
sa.sin_family = AF_INET;
sa.sin_port = htons( port );
if ( bind( fd, (struct sockaddr *) &sa, sizeof(sa) ) < 0 )
{ perror( "Init_socket: bind" ); exit( 1 ); return -1; }
if ( listen( fd, 3 ) < 0 )
{ perror( "Init_socket: listen" ); exit( 1 ); return -1; }
return fd;
}
#endif
#if defined(macintosh) || defined(MSDOS)
void game_loop_mac_msdos( void )
{
struct timeval last_time;
struct timeval now_time;
static DESCRIPTOR_DATA dcon;
gettimeofday( &last_time, NULL );
current_time = last_time.tv_sec;
/*
* New_descriptor analogue.
*/
dcon.descriptor = 0;
dcon.connected = CON_GET_NAME;
dcon.host = str_dup( "localhost" );
dcon.outsize = 2000;
dcon.outbuf = alloc_mem( dcon.outsize );
dcon.next = descriptor_list;
descriptor_list = &dcon;
/*
* Send the greeting.
*/
{
extern char * help_greeting;
if ( help_greeting[0] == '.' )
write_to_buffer( &dcon, help_greeting+1, 0 );
else
write_to_buffer( &dcon, help_greeting , 0 );
}
/* Main loop */
while ( !merc_down )
{
DESCRIPTOR_DATA *d;
/*
* Process input.
*/
for ( d = descriptor_list; d != NULL; d = d_next )
{
d_next = d->next;
d->fcommand = FALSE;
#if defined(MSDOS)
if ( kbhit( ) )
#endif
{
if ( d->character != NULL )
d->character->timer = 0;
if ( !read_from_descriptor( d ) )
{
if ( d->character != NULL )
save_char_obj( d->character );
d->outtop = 0;
close_socket( d );
continue;
}
}
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 );
if ( d->connected == CON_PLAYING )
interpret( d->character, d->incomm );
else
nanny( d, d->incomm );
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 ) )
{
if ( !process_output( d, TRUE ) )
{
if ( d->character != NULL )
save_char_obj( d->character );
d->outtop = 0;
close_socket( d );
}
}
}
/*
* Synchronize to a clock.
* Busy wait (blargh).
*/
now_time = last_time;
for ( ; ; )
{
int delta;
#if defined(MSDOS)
if ( kbhit( ) )
#endif
{
if ( dcon.character != NULL )
dcon.character->timer = 0;
if ( !read_from_descriptor( &dcon ) )
{
if ( dcon.character != NULL )
save_char_obj( d->character );
dcon.outtop = 0;
close_socket( &dcon );
}
#if defined(MSDOS)
break;
#endif
}
gettimeofday( &now_time, NULL );
delta = ( now_time.tv_sec - last_time.tv_sec ) * 1000 * 1000
+ ( now_time.tv_usec - last_time.tv_usec );
if ( delta >= 1000000 / PULSE_PER_SECOND )
break;
}
last_time = now_time;
current_time = last_time.tv_sec;
}
return;
}
#endif
#if defined(unix)
void game_loop_unix( int control )
{
static struct timeval null_time;
struct timeval last_time;
signal( SIGPIPE, SIG_IGN );
gettimeofday( &last_time, NULL );
current_time = 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( control, &in_set );
maxdesc = control;
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 )
{
perror( "Game_loop: select: poll" );
exit( 1 );
}
/*
* New connection?
*/
if ( FD_ISSET( control, &in_set ) )
new_descriptor( control );
/*
* 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 )
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 )
save_char_obj( d->character );
d->outtop = 0;
close_socket( d );
continue;
}
}
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 );
if ( d->connected == CON_PLAYING )
interpret( d->character, d->incomm );
else
nanny( d, d->incomm );
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 )
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 )
{
perror( "Game_loop: select: stall" );
exit( 1 );
}
}
}
gettimeofday( &last_time, NULL );
current_time = last_time.tv_sec;
}
return;
}
#endif
#if defined(unix)
void new_descriptor( int control )
{
static DESCRIPTOR_DATA d_zero;
char buf[MAX_STRING_LENGTH];
DESCRIPTOR_DATA *dnew;
BAN_DATA *pban;
struct sockaddr_in sock;
struct hostent *from;
int desc;
int size;
size = sizeof(sock);
getsockname( control, (struct sockaddr *) &sock, &size );
if ( ( desc = accept( control, (struct sockaddr *) &sock, &size) ) < 0 )
{
perror( "New_descriptor: accept" );
return;
}
#if !defined(FNDELAY)
#define FNDELAY O_NDELAY
#endif
if ( fcntl( control, F_SETFL, FNDELAY ) == -1 )
{
perror( "New_descriptor: fcntl: FNDELAY" );
return;
}
/*
* Cons a new descriptor.
*/
if ( descriptor_free == NULL )
{
dnew = alloc_perm( sizeof(*dnew) );
}
else
{
dnew = descriptor_free;
descriptor_free = descriptor_free->next;
}
*dnew = d_zero;
dnew->descriptor = desc;
dnew->connected = CON_GET_NAME;
dnew->outsize = 2000;
dnew->outbuf = alloc_mem( dnew->outsize );
size = sizeof(sock);
if ( getpeername( desc, (struct sockaddr *) &sock, &size ) < 0 )
{
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.
*/
for ( pban = ban_list; pban != NULL; pban = pban->next )
{
if ( str_suffix( pban->name, dnew->host ) )
{
write_to_descriptor( desc,
"Your site has been banned from this Mud.\n\r", 0 );
close( desc );
free_string( dnew->host );
free_mem( dnew->outbuf, dnew->outsize );
dnew->next = descriptor_free;
descriptor_free = dnew;
return;
}
}
/*
* Init descriptor data.
*/
dnew->next = descriptor_list;
descriptor_list = dnew;
/*
* Send the greeting.
*/
{
extern char * help_greeting;
if ( help_greeting[0] == '.' )
write_to_buffer( dnew, help_greeting+1, 0 );
else
write_to_buffer( dnew, help_greeting , 0 );
}
return;
}
#endif
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 );
if ( dclose->connected == CON_PLAYING )
{
act( "$n has lost $s link.", ch, NULL, NULL, TO_ROOM );
ch->desc = NULL;
}
else
{
free_char( 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_string( dclose->host );
dclose->next = descriptor_free;
descriptor_free = dclose;
#if defined(MSDOS)
exit(1);
#endif
return;
}
bool read_from_descriptor( DESCRIPTOR_DATA *d )
{
int 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. */
#if defined(macintosh)
for ( ; ; )
{
int c;
c = getc( stdin );
if ( c == '\0' || c == EOF )
break;
putc( c, stdout );
if ( c == '\r' )
putc( '\n', stdout );
d->inbuf[iStart++] = c;
if ( iStart > sizeof(d->inbuf) - 10 )
break;
}
#endif
#if defined(MSDOS) || defined(unix)
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 ( errno == EWOULDBLOCK )
break;
else
{
perror( "Read_from_descriptor" );
return FALSE;
}
}
#endif
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 >= 20 )
{
sprintf( log_buf, "%s input spamming!", d->host );
log_string( log_buf );
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;
}
/*
* Low level output function.
*/
bool process_output( DESCRIPTOR_DATA *d, bool fPrompt )
{
extern bool merc_down;
/*
* Bust a prompt.
*/
if ( fPrompt && !merc_down && d->connected == CON_PLAYING )
{
CHAR_DATA *ch;
ch = d->original ? d->original : d->character;
if ( IS_SET(ch->act, PLR_BLANK) )
write_to_buffer( d, "\n\r", 2 );
if ( IS_SET(ch->act, PLR_PROMPT) )
{
char buf[40];
ch = d->character;
sprintf( buf, "<%dhp %dm %dmv> %s",
ch->hit, ch->mana, ch->move, go_ahead_str );
write_to_buffer( d, buf, strlen(buf) );
}
}
/*
* Short-circuit if nothing to write.
*/
if ( d->outtop == 0 )
return TRUE;
/*
* Snoop-o-rama.
*/
if ( d->snoop_by != NULL )
{
write_to_buffer( d->snoop_by, "% ", 2 );
write_to_buffer( d->snoop_by, d->outbuf, d->outtop );
}
/*
* OS-dependent output.
*/
if ( !write_to_descriptor( d->descriptor, d->outbuf, d->outtop ) )
{
d->outtop = 0;
return FALSE;
}
else
{
d->outtop = 0;
return TRUE;
}
}
/*
* 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;
outbuf = alloc_mem( 2 * d->outsize );
strncpy( outbuf, d->outbuf, d->outtop );
free_mem( d->outbuf, d->outsize );
d->outbuf = outbuf;
d->outsize *= 2;
}
/*
* Copy.
*/
strcpy( d->outbuf + d->outtop, txt );
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 defined(macintosh) || defined(MSDOS)
if ( desc == 0 )
desc = 1;
#endif
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 )
{
char buf[MAX_STRING_LENGTH];
CHAR_DATA *ch;
char *pwdnew;
char *p;
int iClass;
bool fOld;
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_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_reconnect( d, argument, FALSE ) )
{
fOld = TRUE;
}
else
{
if ( wizlock && !IS_HERO(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 */
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:
#if defined(unix)
write_to_buffer( d, "\n\r", 2 );
#endif
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_reconnect( d, ch->name, TRUE ) )
return;
if ( check_playing( d, ch->name ) )
return;
sprintf( log_buf, "%s@%s has connected.", ch->name, d->host );
log_string( log_buf );
if ( IS_HERO(ch) )
do_help( ch, "imotd" );
do_help( ch, "motd" );
d->connected = CON_READ_MOTD;
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:
#if defined(unix)
write_to_buffer( d, "\n\r", 2 );
#endif
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:
#if defined(unix)
write_to_buffer( d, "\n\r", 2 );
#endif
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, "What is your sex (M/F/N)? ", 0 );
d->connected = CON_GET_NEW_SEX;
break;
case CON_GET_NEW_SEX:
switch ( argument[0] )
{
case 'm': case 'M': ch->sex = SEX_MALE; break;
case 'f': case 'F': ch->sex = SEX_FEMALE; break;
case 'n': case 'N': ch->sex = SEX_NEUTRAL; 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].who_name );
}
strcat( buf, "]: " );
write_to_buffer( d, buf, 0 );
d->connected = CON_GET_NEW_CLASS;
break;
case CON_GET_NEW_CLASS:
for ( iClass = 0; iClass < MAX_CLASS; iClass++ )
{
if ( !str_cmp( argument, class_table[iClass].who_name ) )
{
ch->class = iClass;
break;
}
}
if ( iClass == MAX_CLASS )
{
write_to_buffer( d,
"That's not a class.\n\rWhat IS your class? ", 0 );
return;
}
sprintf( log_buf, "%s@%s new player.", ch->name, d->host );
log_string( log_buf );
write_to_buffer( d, "\n\r", 2 );
do_help( ch, "motd" );
d->connected = CON_READ_MOTD;
break;
case CON_READ_MOTD:
write_to_buffer( d,
"\n\rWelcome to Merc Diku Mud. May your visit here be ... Mercenary.\n\r",
0 );
ch->next = char_list;
char_list = ch;
d->connected = CON_PLAYING;
if ( ch->level == 0 )
{
OBJ_DATA *obj;
switch ( class_table[ch->class].attr_prime )
{
case APPLY_STR: ch->pcdata->perm_str = 16; break;
case APPLY_INT: ch->pcdata->perm_int = 16; break;
case APPLY_WIS: ch->pcdata->perm_wis = 16; break;
case APPLY_DEX: ch->pcdata->perm_dex = 16; break;
case APPLY_CON: ch->pcdata->perm_con = 16; break;
}
ch->level = 1;
ch->exp = 1000;
ch->hit = ch->max_hit;
ch->mana = ch->max_mana;
ch->move = ch->max_move;
sprintf( buf, "the %s",
title_table [ch->class] [ch->level]
[ch->sex == SEX_FEMALE ? 1 : 0] );
set_title( ch, buf );
obj = create_object( get_obj_index(OBJ_VNUM_SCHOOL_BANNER), 0 );
obj_to_char( obj, ch );
equip_char( ch, obj, WEAR_LIGHT );
obj = create_object( get_obj_index(OBJ_VNUM_SCHOOL_VEST), 0 );
obj_to_char( obj, ch );
equip_char( ch, obj, WEAR_BODY );
obj = create_object( get_obj_index(OBJ_VNUM_SCHOOL_SHIELD), 0 );
obj_to_char( obj, ch );
equip_char( ch, obj, WEAR_SHIELD );
obj = create_object( get_obj_index(class_table[ch->class].weapon),
0 );
obj_to_char( obj, ch );
equip_char( ch, obj, WEAR_WIELD );
char_to_room( ch, get_room_index( ROOM_VNUM_SCHOOL ) );
}
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_look( ch, "auto" );
break;
}
return;
}
/*
* Parse a name for acceptability.
*/
bool check_parse_name( char *name )
{
/*
* Reserved words.
*/
if ( is_name( name, "all auto immortal self someone" ) )
return FALSE;
/*
* Length restrictions.
*/
if ( strlen(name) < 3 )
return FALSE;
#if defined(MSDOS)
if ( strlen(name) > 8 )
return FALSE;
#endif
#if defined(macintosh) || defined(unix)
if ( strlen(name) > 12 )
return FALSE;
#endif
/*
* Alphanumerics only.
* Lock out IllIll twits.
*/
{
char *pc;
bool fIll;
fIll = TRUE;
for ( pc = name; *pc != '\0'; pc++ )
{
if ( !isalpha(*pc) )
return FALSE;
if ( LOWER(*pc) != 'i' && LOWER(*pc) != 'l' )
fIll = FALSE;
}
if ( fIll )
return FALSE;
}
/*
* Prevent players from naming themselves after mobs.
*/
{
extern MOB_INDEX_DATA *mob_index_hash[MAX_KEY_HASH];
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;
send_to_char( "Reconnecting.\n\r", ch );
act( "$n has reconnected.", ch, NULL, NULL, TO_ROOM );
sprintf( log_buf, "%s@%s reconnected.", ch->name, d->host );
log_string( log_buf );
d->connected = CON_PLAYING;
}
return TRUE;
}
}
return FALSE;
}
/*
* Check if already playing.
*/
bool check_playing( DESCRIPTOR_DATA *d, char *name )
{
DESCRIPTOR_DATA *dold;
for ( dold = descriptor_list; dold; dold = dold->next )
{
if ( dold != d
&& dold->character != NULL
&& dold->connected != CON_GET_NAME
&& dold->connected != CON_GET_OLD_PASSWORD
&& !str_cmp( name, dold->original
? dold->original->name : dold->character->name ) )
{
write_to_buffer( d, "Already playing.\n\rName: ", 0 );
d->connected = CON_GET_NAME;
if ( d->character != NULL )
{
free_char( d->character );
d->character = NULL;
}
return TRUE;
}
}
return FALSE;
}
void stop_idling( CHAR_DATA *ch )
{
if ( ch == NULL
|| ch->desc == NULL
|| ch->desc->connected != CON_PLAYING
|| ch->was_in_room == NULL )
return;
ch->timer = 0;
if ( ch->in_room != NULL )
char_from_room( ch );
char_to_room( ch, ch->was_in_room );
ch->was_in_room = NULL;
act( "$n has returned from the void.", ch, NULL, NULL, TO_ROOM );
return;
}
/*
* Write to one char.
*/
void send_to_char( const char *txt, CHAR_DATA *ch )
{
if ( txt != NULL && ch->desc != NULL )
write_to_buffer( ch->desc, txt, strlen(txt) );
return;
}
/*
* The primary output interface for formatted output.
*/
void act( const char *format, CHAR_DATA *ch, OBJ_DATA *obj, const void *vo, int type )
{
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 *vict = (CHAR_DATA *) vo;
OBJ_DATA *v_obj = (OBJ_DATA *) vo;
const char *str;
const char *i;
char *point;
/*
* Discard null and zero-length messages.
*/
if ( format == NULL || format[0] == '\0' )
return;
to = (type == TO_VICT) ? vict->in_room->people : ch->in_room->people;
for ( ; to != NULL; to = to->next_in_room )
{
if ( to->desc == NULL || !IS_AWAKE(to) )
continue;
if ( type == TO_CHAR && to != ch )
continue;
if ( type == TO_VICT && ( to != vict || to == ch ) )
continue;
if ( type == TO_ROOM && to == ch )
continue;
if ( type == TO_NOTVICT && (to == ch || to == vict) )
continue;
point = buf;
str = format;
while ( *str != '\0' )
{
if ( *str != '$' )
{
*point++ = *str++;
continue;
}
str++;
switch ( *str )
{
default: bug( "Act: bad code %d.", *str );
i = " <@@@> "; break;
case 'T': i = (char *) vo; break;
case 'n': i = PERS( ch, to ); break;
case 'N': i = PERS( vict, to ); break;
case 'e': i = he_she [ch ->sex]; break;
case 'E': i = he_she [vict ->sex]; break;
case 'm': i = him_her [ch ->sex]; break;
case 'M': i = him_her [vict ->sex]; break;
case 's': i = his_her [ch ->sex]; break;
case 'S': i = his_her [vict ->sex]; break;
case 'p': i = can_see_obj( to, obj )
? obj->short_descr
: "something"; break;
case 'P': i = can_see_obj( to, v_obj )
? v_obj->short_descr
: "something"; break;
case 'd': i = ( vo == NULL || ((char *) vo)[0] == '\0' )
? "door"
: ( one_argument( (char *) vo, fname ), fname );
break;
}
++str;
while ( ( *point = *i ) != '\0' )
++point, ++i;
}
*point++ = '\n';
*point++ = '\r';
buf[0] = UPPER(buf[0]);
write_to_buffer( to->desc, buf, point - buf );
}
return;
}
/*
* Macintosh support functions.
*/
#if defined(macintosh)
int gettimeofday( struct timeval *tp, void *tzp )
{
tp->tv_sec = time( NULL );
tp->tv_usec = 0;
}
#endif