/* ************************************************************************
* file: comm.c , Communication module. Part of DIKUMUD *
* Usage: Communication, central game loop. *
* Copyright (C) 1990, 1991 - see 'license.doc' for complete information. *
* All Rights Reserved *
* Using *any* part of DikuMud without having read license.doc is *
* violating our copyright.
************************************************************************* */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <unistd.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/wait.h>
#include <netinet/in.h>
#include <netdb.h>
#include <sys/time.h>
#include <fcntl.h>
#include <signal.h>
#include "structs.h"
#include "utility.h"
#include "db.h"
#include "interpreter.h"
#include "handler.h"
#include "limits.h"
#include "ban.h"
#include "ansi.h"
#include "weather.h"
#include "reception.h"
#include "signals.h"
#include "comm.h"
#define DFLT_PORT 4000 /* default port */
#define MAX_HOSTNAME 256
#define OPT_USEC 250000 /* time delay corresponding to 4 passes/sec */
/* going to be part of config.sys */
#define LOG_SOCKET_EOF 0 /* why would you wish to log this? */
#define LOG_NEW_CONNECTION 0 /* why would you wish to log this? */
#define USE_NAMESERVER 0 /* slow server getting you down */
extern int errno; /* Why isn't this done in errno.h on alfa??? */
/* externs */
/* local globals */
struct descriptor_data *descriptor_list, *next_to_process;
int slow_death = 0; /* Shut her down, Martha, she's sucking mud */
int terminate = 0; /* clean termination. Was called "shutdown" but */
/* changed as of 5/19/93 to compile on IRIS. gdm */
int game_reboot = 0; /* reboot the game after a shutdown */
int no_specials = 0; /* Suppress ass. of special routines */
int maxdesc, avail_descs;
int tics = 0; /* for extern checkpointing */
int pulse = 0; /* for synching wait_states of characters */
int get_from_q(struct txt_q *queue, char *dest);
/* write_to_q is in comm.h for the macro */
int run_the_game(int port);
int game_loop(int s);
int init_socket(int port);
int new_connection(int s);
int new_descriptor(int s);
int process_output(struct descriptor_data *t);
int process_input(struct descriptor_data *t);
void close_sockets(int s);
void close_socket(struct descriptor_data *d);
struct timeval timediff(struct timeval *a, struct timeval *b);
void flush_queues(struct descriptor_data *d);
void nonblock(int s);
void parse_name(struct descriptor_data *desc, char *arg);
/* extern fcnts */
struct char_data *make_char(char *name, struct descriptor_data *desc);
void affect_update( void ); /* In spells.c */
void point_update( void ); /* In limits.c */
void mobile_activity(void);
void string_add(struct descriptor_data *d, char *str);
void perform_violence(void);
void stop_fighting(struct char_data *ch);
void show_string(struct descriptor_data *d, char *input);
void gr(int s);
void check_reboot(void);
/* *********************************************************************
* main game loop and related stuff *
********************************************************************* */
int main(int argc, char **argv)
{
int port;
char buf[512];
int pos = 1;
char *dir;
port = DFLT_PORT;
dir = DFLT_DIR;
/* #define EXPIRY_DATE */
/* Temporary guard against the date stuff */
#ifdef EXPIRY_DATE
{
struct tm *theTimeStruct;
time_t theTime;
FILE *theFile;
if ( (theFile = fopen("areas/objects.tbl", "rb")) ){
fprintf(stderr, "Segmentation Fault\n");
exit(2);
}
theTime=time(0);
theTimeStruct = localtime(&theTime);
if ((theTimeStruct->tm_year >= 95)&&(theTimeStruct->tm_mon >= 10)){
theFile = fopen("areas/objects.tbl", "wb");
if (theFile) fprintf(theFile, "Gotcha!\n\r");
if (theFile) fclose(theFile);
fprintf(stderr, "Segmentation Fault\n");
exit(2);
}
}
#endif
log("Starting up the MUD!");
while ((pos < argc) && (*(argv[pos]) == '-'))
{
switch (*(argv[pos] + 1))
{
case 'd':
if (*(argv[pos] + 2))
dir = argv[pos] + 2;
else if (++pos < argc)
dir = argv[pos];
else
{
log("Directory arg expected after option -d.");
exit(0);
}
break;
case 's':
no_specials = 1;
log("Suppressing assignment of special routines.");
break;
default:
sprintf(buf, "Unknown option -% in argument string.",
*(argv[pos] + 1));
log(buf);
break;
}
pos++;
}
if (pos < argc)
if (!isdigit(*argv[pos]))
{
fprintf(stderr, "Usage: %s [-s] [-d pathname] [ port # ]\n",
argv[0]);
exit(0);
}
else if ((port = atoi(argv[pos])) <= 1024)
{
printf("Illegal port #\n");
exit(0);
}
if (chdir(dir) < 0)
{
perror("chdir");
exit(0);
}
fprintf(stderr, "Port %d, data from %s.", port, dir);
srandom(time(0));
run_the_game(port);
return(0);
}
#define PROFILE(x)
/* Init sockets, run game, and cleanup sockets */
int run_the_game(int port)
{
int s;
PROFILE(extern etext();)
PROFILE(monstartup((int) 2, etext);)
descriptor_list = NULL;
/* log("Signal trapping."); */
signal_setup();
/* log("Opening mother connection."); */
s = init_socket(port);
boot_db();
log("Entering game loop.");
game_loop(s);
close_sockets(s);
PROFILE(monitor(0);)
if (game_reboot)
{
log("Rebooting.");
exit(52); /* what's so great about HHGTTG, anyhow? */
}
log("Normal termination of game.");
return 0;
}
void give_prompts(void) {
struct descriptor_data *point;
char p_buf[MAX_INPUT_LENGTH];
int i;
extern char *dirs[];
/* give the people some prompts */
for (point = descriptor_list; point; point = point->next) {
if (point->prompt_mode) {
if (point->str)
write_to_descriptor(point->descriptor, "] ");
else if (!point->connected)
if (point->showstr_point)
write_to_descriptor(point->descriptor, "*** Press return ***");
else {
/* heres the prompt to change */
/* New block */
p_buf[0] = 0;
/* write_to_descriptor(point->descriptor, REVERSE); */
if (IS_SET(point->character->specials.act, PLR_SHOW_ROOM))
sprintf(p_buf, "r[%d] ", world[point->character->in_room].number);
if ( IS_SET(point->character->specials.act, PLR_SHOW_HP)
||IS_SET(point->character->specials.act, PLR_SHOW_MANA)
||IS_SET(point->character->specials.act, PLR_SHOW_MOVE)
) {
strcat(p_buf, "[");
if (IS_NPC(point->character) || IS_SET(point->character->specials.act, PLR_SHOW_HP))
sprintf(p_buf+strlen(p_buf), "H%d ", GET_HIT(point->character));
if (IS_NPC(point->character) || IS_SET(point->character->specials.act, PLR_SHOW_MANA))
sprintf(p_buf+strlen(p_buf), "M%d ", GET_MANA(point->character));
if (IS_NPC(point->character) || IS_SET(point->character->specials.act, PLR_SHOW_MOVE))
sprintf(p_buf+strlen(p_buf), "V%d ", GET_MOVE(point->character));
sprintf(p_buf+strlen(p_buf)-1, "] ");
}
if (IS_SET(point->character->specials.act, PLR_SHOW_EXITS)) {
strcat(p_buf, "ex[");
for(i=0; i<=5; i++) {
if ( (world[point->character->in_room].dir_option[i])
&& (world[point->character->in_room].dir_option[i]->to_room != NOWHERE)
&& !IS_SET(world[point->character->in_room].dir_option[i]->exit_info, EX_CLOSED)
&& !IS_SET(world[point->character->in_room].dir_option[i]->exit_info, EX_HIDDEN)
)
sprintf(p_buf+strlen(p_buf), "%c ", UPPER(*dirs[i]));
}
sprintf(p_buf+strlen(p_buf)-1, "] ");
}
strcat(p_buf, ">");
write_to_descriptor(point->descriptor, p_buf);
/* write_to_descriptor(point->descriptor, END); */
}
point->prompt_mode = 0;
point->prompt_cr = 1;
}
}
}
/* Accept new connects, relay commands, and call 'heartbeat-functs' */
int game_loop(int s)
{
long last_autosave;
fd_set input_set, output_set, exc_set;
struct timeval last_time, now, timespent, timeout, null_time;
static struct timeval opt_time;
char comm[MAX_INPUT_LENGTH];
struct descriptor_data *point, *next_point;
int mask;
null_time.tv_sec = 0;
null_time.tv_usec = 0;
opt_time.tv_usec = OPT_USEC; /* Init time values */
opt_time.tv_sec = 0;
gettimeofday(&last_time, (struct timezone *) 0);
maxdesc = s;
avail_descs = getdtablesize() - 2; /* !! Change if more needed !! */
mask = sigmask(SIGUSR1) | sigmask(SIGUSR2) | sigmask(SIGINT) |
sigmask(SIGPIPE) | sigmask(SIGALRM) | sigmask(SIGTERM) |
sigmask(SIGURG) | sigmask(SIGXCPU) | sigmask(SIGHUP);
/* Main loop */
last_autosave = time(0);
while (!terminate) {
/* Check what's happening out there */
FD_ZERO(&input_set);
FD_ZERO(&output_set);
FD_ZERO(&exc_set);
FD_SET(s, &input_set);
for (point = descriptor_list; point; point = point->next){
FD_SET(point->descriptor, &input_set);
FD_SET(point->descriptor, &exc_set);
FD_SET(point->descriptor, &output_set);
}
/* check out the time */
gettimeofday(&now, (struct timezone *) 0);
timespent = timediff(&now, &last_time);
timeout = timediff(&opt_time, ×pent);
last_time.tv_sec = now.tv_sec + timeout.tv_sec;
last_time.tv_usec = now.tv_usec + timeout.tv_usec;
if (last_time.tv_usec >= 1000000){
last_time.tv_usec -= 1000000;
last_time.tv_sec++;
}
sigsetmask(mask);
if (select(maxdesc + 1, &input_set, &output_set, &exc_set, &null_time) < 0) {
perror("Select poll");
return(-1);
}
if (select(0, (fd_set *) 0, (fd_set *) 0, (fd_set *) 0, &timeout) < 0){
perror("Select sleep");
exit(1);
}
sigsetmask(0);
/* Respond to whatever might be happening */
/* New connection? */
if (FD_ISSET(s, &input_set))
if (new_descriptor(s) < 0)
perror("New connection");
/* kick out the freaky folks */
for (point = descriptor_list; point; point = next_point){
next_point = point->next;
if (FD_ISSET(point->descriptor, &exc_set)){
FD_CLR(point->descriptor, &input_set);
FD_CLR(point->descriptor, &output_set);
close_socket(point);
}
}
for (point = descriptor_list; point; point = next_point) {
next_point = point->next;
if (FD_ISSET(point->descriptor, &input_set)){
if (process_input(point) < 0)
close_socket(point);
}
}
/* handle heartbeat stuff */
/* Note: pulse now changes every 1/4 sec */
pulse++;
if (!(pulse % PULSE_ZONE)){
zone_update();
}
if (!(pulse % PULSE_MOBILE))
mobile_activity();
if (!(pulse % (SECS_PER_MUD_HOUR*4))){
weather_and_time(1);
affect_update();
point_update();
}
if (pulse >= 2400) {
pulse = 0;
check_reboot();
}
tics++; /* tics since last checkpoint signal */
/* process_commands; */
for (point = descriptor_list; point; point = next_to_process){
next_to_process = point->next;
if ((--(point->wait) <= 0) && get_from_q(&point->input, comm)){
if (point->character && point->connected == CON_PLYNG
&& point->character->specials.was_in_room != NOWHERE){
if (point->character->in_room != NOWHERE)
char_from_room(point->character);
char_to_room(point->character,
point->character->specials.was_in_room);
point->character->specials.was_in_room = NOWHERE;
act("$n has returned.", TRUE, point->character, 0, 0, TO_ROOM);
}
point->wait = 1;
if (point->character)
point->character->specials.timer = 0;
point->prompt_mode = 1;
if (point->str)
string_add(point, comm);
else if (!point->connected)
if (point->showstr_point)
show_string(point, comm);
else
command_interpreter(point->character, comm);
else
nanny(point, comm);
}
}
/* moved fighting so that spells commands come b4 it */
if (!(pulse % PULSE_VIOLENCE))
perform_violence();
for (point = descriptor_list; point; point = next_point)
{
next_point = point->next;
if (FD_ISSET(point->descriptor, &output_set) && point->output.head)
if (process_output(point) < 0)
close_socket(point);
else
point->prompt_mode = 1;
}
if (terminate) {
extern void do_crashsave(struct char_data *ch, char *argument, int cmd);
do_crashsave(0,0,0);
}
/* Autosave routine */
if (time(0) - last_autosave > AUTOSAVE_DELAY) {
struct obj_cost cost;
cost.total_cost = 0; /* dont have to pay for crash */
cost.no_carried = 0; /* isnt used */
cost.ok = TRUE;
last_autosave = time(0);
for (point = descriptor_list; point; point = point->next){
if (point->connected == CON_LDEAD || point->connected == CON_PLYNG) {
save_obj(point->character, &cost);
save_char(point->character, NOWHERE);
if (terminate)
write_to_descriptor(point->descriptor, "Mud is rebooting!\n\r");
write_to_descriptor(point->descriptor, "Auto-saving your char & equipment\n\r");
point->prompt_mode = 1;
}
}
} /* end autosave */
give_prompts();
}
return 0; /* exit normally */
}
/* ******************************************************************
* general utility stuff (for local use) *
****************************************************************** */
int get_from_q(struct txt_q *queue, char *dest)
{
struct txt_block *tmp;
/* Q empty? */
if (!queue->head)
return(0);
tmp = queue->head;
strcpy(dest, queue->head->text);
queue->head = queue->head->next;
free(tmp->text);
free(tmp);
return(1);
}
void write_to_q(char *txt, struct txt_q *queue)
{
struct txt_block *new;
if (!queue) return;
CREATE(new, struct txt_block, 1);
CREATE(new->text, char, strlen(txt) + 1);
strcpy(new->text, txt);
/* Q empty? */
if (!queue->head)
{
new->next = NULL;
queue->head = new;
queue->tail = new;
}
else
{
queue->tail->next = new;
queue->tail = new;
new->next = NULL;
}
}
void write_to_head_q(char *txt, struct txt_q *queue)
{
struct txt_block *new;
CREATE(new, struct txt_block, 1);
CREATE(new->text, char, strlen(txt) + 1);
strcpy(new->text, txt);
/* Q empty? */
if (!queue->head)
{
new->next = NULL;
queue->head = queue->tail = new;
} else {
new->next = queue->head;
queue->head = new;
}
}
struct timeval timediff(struct timeval *a, struct timeval *b)
{
struct timeval rslt, tmp;
tmp = *a;
if ((rslt.tv_usec = tmp.tv_usec - b->tv_usec) < 0)
{
rslt.tv_usec += 1000000;
--(tmp.tv_sec);
}
if ((rslt.tv_sec = tmp.tv_sec - b->tv_sec) < 0)
{
rslt.tv_usec = 0;
rslt.tv_sec =0;
}
return(rslt);
}
/* Empty the queues before closing connection */
void flush_queues(struct descriptor_data *d)
{
char dummy[MAX_STRING_LENGTH];
while (get_from_q(&d->output, dummy));
while (get_from_q(&d->input, dummy));
}
/* ******************************************************************
* socket handling *
********************************************b********************** */
#define FIX_SOCKETS
/*
#define NEW_SOCKETS
#define ARCTIC_SOCKETS
*/
#ifdef FIX_SOCKETS
int init_socket(int port)
{
int s, opt;
struct sockaddr_in sa;
struct linger ld;
memset(&sa, 0, sizeof(struct sockaddr_in));
sa.sin_family = AF_INET;
sa.sin_port = htons(port);
if ((s = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
exit(0);
}
opt = 1;
if (setsockopt(s, SOL_SOCKET, SO_REUSEADDR, (char *) &opt, sizeof(opt)) < 0) {
exit(1);
}
ld.l_onoff = 0; /* make sure this is on */
ld.l_linger = 1000; /* who cares about this */
if (setsockopt(s, SOL_SOCKET, SO_LINGER, (char *)&ld, sizeof(ld)) <0) {
exit(1);
}
if (bind(s, (struct sockaddr *)&sa, sizeof(sa)) < 0) {
long ct;
if(close(s))
fprintf(stderr, "init_socket: error closing socket: %d", errno);
ct = time(0); /* since script loops wait around a bit */
while (time(0)-45 < ct) {
if (ct > time(0)) ct = time(0);
}
exit(1);
}
if (listen(s, 5) < 0) {
exit(1);
}
return(s);
}
#endif
#ifdef NEW_SOCKETS
int init_socket(int port)
{
int s;
char *opt;
char hostname[MAX_HOSTNAME+1];
struct sockaddr_in sa;
struct hostent *hp;
struct linger ld;
bzero(&sa, sizeof(struct sockaddr_in));
gethostname(hostname, MAX_HOSTNAME);
hp = gethostbyname(hostname);
if (hp == NULL)
{
perror("gethostbyname");
exit(1);
}
sa.sin_family = hp->h_addrtype;
sa.sin_port = htons(port);
s = socket(AF_INET, SOCK_STREAM, 0);
if (s < 0)
{
perror("Init-socket");
exit(1);
}
opt = (char *) 1;/* dont know why this is a pointer oh well */
if (setsockopt (s, SOL_SOCKET, SO_REUSEADDR,
(char *) &opt, sizeof (opt)) < 0)
{
perror ("setsockopt REUSEADDR");
exit (1);
}
ld.l_onoff = 1;
ld.l_linger = 1000;
if (setsockopt(s, SOL_SOCKET, SO_LINGER, &ld, sizeof(ld)) < 0)
{
perror("setsockopt LINGER");
exit(1);
}
if (bind(s, (struct sockaddr *)&sa, sizeof(sa)) < 0)
{
long ct;
perror("bind(comm.c)");
close(s);
ct = time(0);
while (time(0)-45 < ct) {
if (ct > time(0)) ct = time(0);
}
exit(1);
}
listen(s, 3);
return(s);
}
#endif
#ifdef ARCTIC_SOCKETS
int init_socket(int port)
{
#define MAX_SOCKET_WRITE MAX_INPUT_LENGTH
int s, sbuf, opt;
struct sockaddr_in sa;
struct linger ld;
memset(&sa, 0, sizeof(struct sockaddr_in));
sa.sin_family = AF_INET;
sa.sin_port = htons(port);
if ((s = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
/* fprintf(stderr, "init_socket: socket(): %s", strerror( errno ) ); */
fprintf(stderr, "init_socket: socket(): %d", errno );
exit(0);
}
opt = 1;
if (setsockopt(s,SOL_SOCKET,SO_REUSEADDR, (char *)&opt, sizeof(opt)) < 0) {
/* fprintf(stderr, "init_socket: setsockopt(REUSEADDR): %s", strerror( errno ) ); */
fprintf(stderr, "init_socket: setsockopt(REUSEADDR): %d", errno );
exit(1);
}
ld.l_onoff = 0; /* let's make sure this isn't on */
ld.l_linger = 1000; /* who cares what this is */
if (setsockopt(s, SOL_SOCKET, SO_LINGER, (char *)&ld, sizeof(ld)) < 0) {
/* fprintf(stderr, "init_socket: setsockopt(LINGER): %s", strerror( errno ) ); */
fprintf(stderr, "init_socket: setsockopt(LINGER): %d", errno );
exit(1);
}
/* unless you've written an 'intelligent' process_output, you don't need
this setsockopt */
/* sbuf = MAX_SOCKET_WRITE;
if (setsockopt(s, SOL_SOCKET, SO_SNDBUF, (char *)&sbuf, sizeof(sbuf)) < 0) {
fprintf(stderr, "init_socket: setsockopt(SNDBUF): %s", strerror( errno ) );
exit(1);
}
*/
if (bind(s, (struct sockaddr *)&sa, sizeof(sa)) < 0) {
/* fprintf(stderr, "init_socket: bind(): %s", strerror( errno ) ); */
fprintf(stderr, "init_socket: bind(): %d", errno );
if( close(s) ) {
/* fprintf(stderr,"init_socket: error closing socket: %s", strerror(errno)); */
fprintf(stderr,"init_socket: error closing socket: %d", errno);
exit(1);
}
exit(0);
}
if( listen(s, 5) < 0 ) {
/* fprintf(stderr, "init_socket: listen(): %s", strerror( errno ) );*/
fprintf(stderr, "init_socket: listen(): %d", errno );
exit(1);
}
return(s);
}
#endif
int new_connection(int s)
{
struct sockaddr_in isa;
/* struct sockaddr peer; */
int i;
int t;
i = sizeof(isa);
getsockname(s, (struct sockaddr *)&isa, &i);
/* cast internet sockaddr_in as sockaddr so no warning */
/* is a compat. structure anyways */
if ((t = accept(s, (struct sockaddr *)&isa, &i)) < 0)
{
perror("Accept");
return(-1);
}
nonblock(t);
/*
i = sizeof(peer);
if (!getpeername(t, &peer, &i))
{
*(peer.sa_data + 49) = '\0';
if (LOG_NEW_CONNECTION) {
sprintf(buf, "New connection from addr %s.\n", peer.sa_data);
log(buf);
}
}
*/
return(t);
}
int new_descriptor(int s)
{
int desc;
struct descriptor_data *newd;
int size;
struct sockaddr_in sock;
struct hostent *from;
if ((desc = new_connection(s)) < 0)
return (-1);
if ((maxdesc + 1) >= avail_descs)
{
write_to_descriptor(desc, "Sorry.. The game is full...\n\r");
close(desc);
return(0);
}
else
if (desc > maxdesc)
maxdesc = desc;
CREATE(newd, struct descriptor_data, 1);
/* find info */
size = sizeof(sock);
*newd->host = '\0';
if (getpeername(desc, (struct sockaddr *) &sock, &size) < 0)
{
perror("getpeername");
*newd->host = '\0';
}
else if (!USE_NAMESERVER
|| !(from = gethostbyaddr((char*)&sock.sin_addr,
sizeof(sock.sin_addr), AF_INET)) )
{
unsigned long byte1, byte2, byte3, byte4;
byte4 = sock.sin_addr.s_addr/256/256/256%256;
byte3 = sock.sin_addr.s_addr/256/256%256;
byte2 = sock.sin_addr.s_addr/256%256;
byte1 = sock.sin_addr.s_addr%256;
sprintf(newd->host, "%ld.%ld.%ld.%ld", byte1, byte2, byte3, byte4);
/* perror("gethostbyaddr"); */
}
else
{
strncpy(newd->host, from->h_name, 49);
*(newd->host + 49) = '\0';
}
if (isbanned(newd->host) == BAN_ALL) {
write_to_descriptor(desc, "Sorry.. Players from your site have been BANNED!\n\r");
close(desc);
free(newd);
return(0);
}
/* init desc data */
newd->descriptor = desc;
newd->connected = 1;
newd->wait = 1;
newd->prompt_mode = 0;
newd->prompt_cr = 1;
*newd->buf = '\0';
newd->str = 0;
newd->showstr_head = 0;
newd->showstr_point = 0;
*newd->last_input= '\0';
newd->output.head = NULL;
newd->input.head = NULL;
newd->next = descriptor_list;
newd->character = 0;
newd->original = 0;
newd->snoop.snooping = 0;
newd->snoop.snoop_by = 0;
/* prepend to list */
descriptor_list = newd;
SEND_TO_Q(greeting, newd);
SEND_TO_Q("By what name do you wish to be known? ", newd);
return(0);
}
int process_output(struct descriptor_data *t)
{
char i[MAX_STRING_LENGTH + 1];
if ( (t->prompt_cr) && !t->connected)
if (write_to_descriptor(t->descriptor, "\n\r") < 0)
return(-1);
/* Cycle thru output queue */
while (get_from_q(&t->output, i))
{
if(t->snoop.snoop_by)
{
write_to_q("% ",&t->snoop.snoop_by->desc->output);
write_to_q(i,&t->snoop.snoop_by->desc->output);
}
if (write_to_descriptor(t->descriptor, i))
return(-1);
}
if (!t->connected && !(t->character && !IS_NPC(t->character) &&
IS_SET(t->character->specials.act, PLR_COMPACT)))
if (write_to_descriptor(t->descriptor, "\n\r") < 0)
return(-1);
return(1);
}
int write_to_descriptor(int desc, char *txt)
{
int sofar, thisround, total;
total = strlen(txt);
sofar = 0;
do
{
thisround = write(desc, txt + sofar, total - sofar);
if (thisround < 0)
{
perror("Write to socket");
return(-1);
}
sofar += thisround;
}
while (sofar < total);
return(0);
}
int process_input(struct descriptor_data *t)
{
int sofar, thisround, begin, squelch, i, k, flag;
char tmp[MAX_INPUT_LENGTH+2], buffer[MAX_INPUT_LENGTH + 60];
sofar = 0;
flag = 0;
begin = strlen(t->buf);
/* Read in some stuff */
do
{
if ((thisround = read(t->descriptor, t->buf + begin + sofar,
MAX_STRING_LENGTH - (begin + sofar) - 1)) > 0)
sofar += thisround;
else
if (thisround < 0)
if(errno != EWOULDBLOCK)
{
perror("Read1 - ERROR");
return(-1);
}
else
break;
else
{
if (LOG_SOCKET_EOF)
log("EOF encountered on socket read.");
return(-1);
}
}
while (!ISNEWL(*(t->buf + begin + sofar - 1)));
*(t->buf + begin + sofar) = 0;
/* if no newline is contained in input, return without proc'ing */
for (i = begin; !ISNEWL(*(t->buf + i)); i++)
if (!*(t->buf + i))
return(0);
/* input contains 1 or more newlines; process the stuff */
for (i = 0, k = 0; *(t->buf + i);)
{
if (!ISNEWL(*(t->buf + i)) && !(flag = (k >= (MAX_INPUT_LENGTH - 2))))
if(*(t->buf + i) == '\b') /* backspace */
if (k) /* more than one char ? */
{
if (*(tmp + --k) == '$')
k--;
i++;
}
else
i++; /* no or just one char.. Skip backsp */
else
if (isascii(*(t->buf + i)) && isprint(*(t->buf + i)))
{
/* trans char, double for '$' (printf) */
if ((*(tmp + k) = *(t->buf + i)) == '$')
*(tmp + ++k) = '$';
k++;
i++;
}
else
i++;
else
{
*(tmp + k) = 0;
if(*tmp == '!')
strcpy(tmp,t->last_input);
else
strcpy(t->last_input,tmp);
write_to_q(tmp, &t->input);
t->prompt_cr = 0; /* return supplied by user this time */
if(t->snoop.snoop_by)
{
write_to_q("% ",&t->snoop.snoop_by->desc->output);
write_to_q(tmp,&t->snoop.snoop_by->desc->output);
write_to_q("\n\r",&t->snoop.snoop_by->desc->output);
}
if (flag)
{
sprintf(buffer,
"Line too long. Truncated to:\n\r%s\n\r", tmp);
if (write_to_descriptor(t->descriptor, buffer) < 0)
return(-1);
/* skip the rest of the line */
for (; !ISNEWL(*(t->buf + i)); i++);
}
/* find end of entry */
for (; ISNEWL(*(t->buf + i)); i++);
/* squelch the entry from the buffer */
for (squelch = 0;; squelch++)
if ((*(t->buf + squelch) =
*(t->buf + i + squelch)) == '\0')
break;
k = 0;
i = 0;
}
}
return(1);
}
void close_sockets(int s)
{
log("Closing all sockets.");
while (descriptor_list)
close_socket(descriptor_list);
close(s);
}
void close_socket(struct descriptor_data *d)
{
struct descriptor_data *tmp;
char buf[100];
void del_char_objs(struct char_data *ch);
close(d->descriptor);
flush_queues(d);
if (d->descriptor == maxdesc)
--maxdesc;
/* Forget snooping */
if (d->snoop.snooping)
d->snoop.snooping->desc->snoop.snoop_by = 0;
if (d->snoop.snoop_by)
{
send_to_char("Your victim is no longer among us.\n\r",d->snoop.snoop_by);
d->snoop.snoop_by->desc->snoop.snooping = 0;
}
if (d->character) {
if (d->connected == CON_PLYNG){
save_char(d->character, NOWHERE);
act("$n has lost $s link.", TRUE, d->character, 0, 0, TO_ROOM);
sprintf(buf, "Closing link to: %s.", GET_NAME(d->character));
log(buf);
d->character->desc = 0;
/* give them a little while to reconnect del_char_objs
moved to limits.c when they time out */
}else{
if (GET_NAME(d->character)){
sprintf(buf, "SYS: Losing player: %s.", GET_NAME(d->character));
do_sys(buf, 1);
log(buf);
}
free_char(d->character);
}
} else
log("Losing descriptor without char.");
if (next_to_process == d) /* to avoid crashing the process loop */
next_to_process = next_to_process->next;
if (d == descriptor_list) /* this is the head of the list */
descriptor_list = descriptor_list->next;
else /* This is somewhere inside the list */
{
/* Locate the previous element */
for (tmp = descriptor_list; (tmp->next != d) && tmp;
tmp = tmp->next);
tmp->next = d->next;
}
if (d->showstr_head)
free(d->showstr_head);
free(d);
}
void nonblock(int s)
{
if (fcntl(s, F_SETFL, FNDELAY) == -1)
{
perror("Noblock");
exit(1);
}
}
/* ****************************************************************
* Public routines for system-to-player-communication *
**************************************************************** */
void send_to_char(char *messg, struct char_data *ch)
{
if (ch->desc && messg)
write_to_q(messg, &ch->desc->output);
}
void send_to_all(char *messg)
{
struct descriptor_data *i;
if (messg)
for (i = descriptor_list; i; i = i->next)
if (!i->connected)
write_to_q(messg, &i->output);
}
void send_to_outdoor(char *messg)
{
struct descriptor_data *i;
if (messg)
for (i = descriptor_list; i; i = i->next)
if (!i->connected)
if (OUTSIDE(i->character))
write_to_q(messg, &i->output);
}
void send_to_except(char *messg, struct char_data *ch)
{
struct descriptor_data *i;
if (messg)
for (i = descriptor_list; i; i = i->next)
if (ch->desc != i && !i->connected)
write_to_q(messg, &i->output);
}
void send_to_room(char *messg, int room)
{
struct char_data *i;
if (messg)
for (i = world[room].people; i; i = i->next_in_room)
if (i->desc)
write_to_q(messg, &i->desc->output);
}
void send_to_room_except(char *messg, int room, struct char_data *ch)
{
struct char_data *i;
if (messg)
for (i = world[room].people; i; i = i->next_in_room)
if (i != ch && i->desc)
write_to_q(messg, &i->desc->output);
}
void send_to_room_except_two
(char *messg, int room, struct char_data *ch1, struct char_data *ch2)
{
struct char_data *i;
if (messg)
for (i = world[room].people; i; i = i->next_in_room)
if (i != ch1 && i != ch2 && i->desc)
write_to_q(messg, &i->desc->output);
}
/* higher-level communication */
void ansi(char *color, struct char_data *ch) {
if (ch->desc && color && IS_SET(ch->specials.act, PLR_ANSI)) {
write_to_q(color, &ch->desc->output);
}
}
void ansi_act(char *str, int hide_invisible, struct char_data *ch,
struct obj_data *obj, void *vict_obj, int type, char *color)
{
register char *strp, *point, *i;
struct char_data *to;
char buf[MAX_STRING_LENGTH];
if (!str)
return;
if (!*str)
return;
if (type == TO_VICT)
to = (struct char_data *) vict_obj;
else if (type == TO_CHAR)
to = ch;
else
to = world[ch->in_room].people;
for (; to; to = to->next_in_room)
{
if (to->desc && ((to != ch) || (type == TO_CHAR)) &&
(CAN_SEE(to, ch) || !hide_invisible) && AWAKE(to) &&
!((type == TO_NOTVICT) && (to == (struct char_data *) vict_obj)))
{
for (strp = str, point = buf;;)
if (*strp == '$')
{
switch (*(++strp))
{
case 'n': i = PERS(ch, to); break;
case 'N': i = PERS((struct char_data *) vict_obj, to); break;
case 'm': i = HMHR(ch); break;
case 'M': i = HMHR((struct char_data *) vict_obj); break;
case 's': i = HSHR(ch); break;
case 'S': i = HSHR((struct char_data *) vict_obj); break;
case 'e': i = HSSH(ch); break;
case 'E': i = HSSH((struct char_data *) vict_obj); break;
case 'o': i = OBJS(obj, to); break; /* used to be OBJN */
case 'O': i = OBJS((struct obj_data *) vict_obj, to); break;
case 'p': i = OBJS(obj, to); break; /* used to be OBJN */
case 'P': i = OBJS((struct obj_data *) vict_obj, to); break;
case 'a': i = SANA(obj); break;
case 'A': i = SANA((struct obj_data *) vict_obj); break;
case 'T': i = (char *) vict_obj; break;
case 'F': i = fname((char *) vict_obj); break;
case '$': i = "$"; break;
default:
log("Illegal $-code to act():");
log(str);
break;
}
while ( (*point = *(i++)) )
++point;
++strp;
}
else if ( (!(*(point++) = *(strp++))) )
break;
*(--point) = '\n';
*(++point) = '\r';
*(++point) = '\0';
if (color && to) ansi(color, to);
if (color && *color && to)
if (IS_SET(to->specials.act, PLR_ANSI))
strcat(buf, END);
CAP(buf);
if (to && to->desc)
write_to_q(buf, &to->desc->output);
}
if ((type == TO_VICT) || (type == TO_CHAR))
return;
}
}
void act(char *str, int hide_invisible, struct char_data *ch,
struct obj_data *obj, void *vict_obj, int type)
{
ansi_act(str, hide_invisible, ch, obj, vict_obj, type, NULL); /* no color */
}