/* /secure/lib/client.c
* from the Nightmare IVr1 Object Library
* a TCP client object
* created by Descartes of Borg 950428
* modified for the Discworld mudlib by Turrican 25-10-95
*/
#include <network.h>
#include "client.h"
#include "intermud_cfg.h"
private static int DestructOnClose, SocketType = -1;
private static function Read;
private static class client Socket;
void create() {
seteuid(getuid());
}
int eventCreateSocket(string host, int port) {
int x;
Socket = new(class client);
Socket->Blocking = 1;
if( SocketType == -1 ) SocketType = STREAM;
x = socket_create(SocketType, "eventReadCallback", "eventAbortCallback");
if( x < 0 ) {
eventSocketError("Error in socket_create().", x);
return x;
}
Socket->Descriptor = x;
x = socket_bind(Socket->Descriptor, 0);
if( x != EESUCCESS ) {
eventClose(Socket);
eventSocketError("Error in socket_bind().", x);
return x;
}
x = socket_connect(Socket->Descriptor, host + " " + port,
"eventReadCallback", "eventWriteCallback");
if( x != EESUCCESS ) {
eventClose(Socket);
eventSocketError("Error in socket_connect().", x);
return x;
}
}
static void eventAbortCallback(int fd) {
if( !Socket ) return;
if( fd != Socket->Descriptor ) return;
eventClose(Socket);
}
static void eventReadCallback(int fd, mixed val) {
if( functionp(Read) ) evaluate(Read, val);
else eventRead(val); // Taniwha, in an attempt to shut the damn thing up
}
static void eventRead(mixed val) { }
static void eventWriteCallback(int fd) {
int x;
if( !Socket ) return;
Socket->Blocking = 0;
x = EESUCCESS;
while( Socket->Buffer && x == EESUCCESS ) {
switch( x = socket_write(Socket->Descriptor, Socket->Buffer[0]) ) {
case EESUCCESS:
break;
case EECALLBACK:
Socket->Blocking = 1;
break;
case EEWOULDBLOCK:
call_out( (: eventWriteCallback($(fd)) :), 0);
return;
case EEALREADY:
Socket->Blocking = 1;
return;
default:
eventClose(Socket);
eventSocketError("Error in socket_write().", x);
return;
}
if( sizeof(Socket->Buffer) == 1 ) Socket->Buffer = 0;
else Socket->Buffer = Socket->Buffer[1..];
}
}
void eventWrite(mixed val) {
int x;
if( !Socket ) return;
if( Socket->Buffer ) Socket->Buffer += ({ val });
else Socket->Buffer = ({ val });
if( Socket->Blocking ) return;
else eventWriteCallback(Socket->Descriptor);
}
static void eventClose(class client sock) {
if( !sock ) return;
socket_close(sock->Descriptor);
sock = 0;
eventSocketClose();
if( DestructOnClose ) destruct(this_object());
}
static void eventSocketClose() { }
int dest_me() {
eventClose(Socket);
}
static void eventSocketError(string str, int x) {
if( LOGFILE )
log_file(LOGFILE, ctime(time()) + socket_error(x) + "\n");
}
function SetRead(function f) { return (Read = f); }
int SetSocketType(int type) { return (SocketType = type); }
int SetDestructOnClose(int x) { return (DestructOnClose = x); }