1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
|
// $Id: socket.c,v 1.1.1.1 2004/09/10 17:44:49 MagicalTux Exp $
// original : core.c 2003/02/26 18:03:12 Rev 1.7
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#ifdef LCCWIN32
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#include <winsock2.h>
#else
#include <sys/socket.h>
#include <netinet/in.h>
#include <netinet/tcp.h>
#include <sys/time.h>
#include <unistd.h>
#endif
#include <fcntl.h>
#include <string.h>
#include "mmo.h" // [Valaris] thanks to fov
#include "socket.h"
#include "utils.h"
#ifdef MEMWATCH
#include "memwatch.h"
#endif
fd_set readfds;
int fd_max;
int rfifo_size = 65536;
int wfifo_size = 65536;
struct socket_data *session[FD_SETSIZE];
static int null_parse(int fd);
static int (*default_func_parse)(int) = null_parse;
/*======================================
* CORE : Set function
*--------------------------------------
*/
void set_defaultparse(int (*defaultparse)(int))
{
default_func_parse = defaultparse;
}
/*======================================
* CORE : Socket Sub Function
*--------------------------------------
*/
static int recv_to_fifo(int fd)
{
int len;
//printf("recv_to_fifo : %d %d\n",fd,session[fd]->eof);
if(session[fd]->eof)
return -1;
#ifdef LCCWIN32
len = recv(fd,session[fd]->rdata+session[fd]->rdata_size, RFIFOSPACE(fd), 0);
#else
len=read(fd,session[fd]->rdata+session[fd]->rdata_size,RFIFOSPACE(fd));
#endif
// printf (":::RECEIVE:::\n");
// dump(session[fd]->rdata, len); printf ("\n");
//{ int i; printf("recv %d : ",fd); for(i=0;i<len;i++){ printf("%02x ",RFIFOB(fd,session[fd]->rdata_size+i)); } printf("\n");}
if(len>0){
session[fd]->rdata_size+=len;
} else if(len<=0){
// value of connection is not necessary the same
// if (fd == 4) // Removed [Yor]
// printf("Char-Server Has Disconnected.\n");
// else if (fd == 5) // Removed [Yor]
// printf("Attempt To Log In Successful.\n");
// else if (fd == 7) // Removed [Yor]
// printf("Char-Server Has Disconnected.\n");
// else if (fd == 8) // Removed [Valaris]
// printf("%s has logged off your server.\n",RFIFOP(fd,6)); // Removed [Valaris]
// else if (fd != 8) // [Valaris]
printf("set eof : connection #%d\n", fd);
session[fd]->eof=1;
}
return 0;
}
static int send_from_fifo(int fd)
{
int len;
//printf("send_from_fifo : %d\n",fd);
if(session[fd]->eof)
return -1;
#ifdef LCCWIN32
len = send(fd, session[fd]->wdata,session[fd]->wdata_size, 0);
#else
len=write(fd,session[fd]->wdata,session[fd]->wdata_size);
#endif
// printf (":::SEND:::\n");
// dump(session[fd]->wdata, len); printf ("\n");
//{ int i; printf("send %d : ",fd); for(i=0;i<len;i++){ printf("%02x ",session[fd]->wdata[i]); } printf("\n");}
if(len>0){
if(len<session[fd]->wdata_size){
memmove(session[fd]->wdata,session[fd]->wdata+len,session[fd]->wdata_size-len);
session[fd]->wdata_size-=len;
} else {
session[fd]->wdata_size=0;
}
} else {
printf("set eof :%d\n",fd);
session[fd]->eof=1;
}
return 0;
}
static int null_parse(int fd)
{
printf("null_parse : %d\n",fd);
RFIFOSKIP(fd,RFIFOREST(fd));
return 0;
}
/*======================================
* CORE : Socket Function
*--------------------------------------
*/
static int connect_client(int listen_fd)
{
int fd;
struct sockaddr_in client_address;
unsigned int len;
int result;
int yes = 1; // reuse fix
//printf("connect_client : %d\n",listen_fd);
len = sizeof(client_address);
fd = accept(listen_fd,(struct sockaddr*)&client_address,&len);
if (fd_max <= fd) {
fd_max = fd + 1;
} else if (fd == -1) {
perror("accept");
return;
}
// setsockopt(fd,SOL_SOCKET,SO_REUSEADDR,NULL,0);
setsockopt(fd,SOL_SOCKET,SO_REUSEADDR,(char *)&yes,sizeof yes); // reuse fix
#ifdef SO_REUSEPORT
// setsockopt(fd,SOL_SOCKET,SO_REUSEPORT,NULL,0);
setsockopt(fd,SOL_SOCKET,SO_REUSEPORT,(char *)&yes,sizeof yes); //reuse fix
#endif
// setsockopt(fd,IPPROTO_TCP,TCP_NODELAY,NULL,0);
setsockopt(fd,IPPROTO_TCP,TCP_NODELAY,(char *)&yes,sizeof yes); // reuse fix
FD_SET(fd,&readfds);
#ifdef LCCWIN32
{
unsigned long val = 1;
ioctlsocket(fd, FIONBIO, &val);
}
#else
result = fcntl(fd, F_SETFL, O_NONBLOCK);
#endif
CREATE(session[fd], struct socket_data, 1);
CREATE(session[fd]->rdata, unsigned char, rfifo_size);
CREATE(session[fd]->wdata, unsigned char, wfifo_size);
session[fd]->max_rdata = rfifo_size;
session[fd]->max_wdata = wfifo_size;
session[fd]->func_recv = recv_to_fifo;
session[fd]->func_send = send_from_fifo;
session[fd]->func_parse = default_func_parse;
session[fd]->client_addr = client_address;
//printf("new_session : %d %d\n",fd,session[fd]->eof);
return fd;
}
int make_listen_port(int port)
{
struct sockaddr_in server_address;
int fd;
int result;
int yes = 1; // reuse fix
fd = socket( AF_INET, SOCK_STREAM, 0 );
if(fd_max<=fd) fd_max=fd+1;
#ifdef LCCWIN32
{
unsigned long val = 1;
ioctlsocket(fd, FIONBIO, &val);
}
#else
result = fcntl(fd, F_SETFL, O_NONBLOCK);
#endif
// setsockopt(fd,SOL_SOCKET,SO_REUSEADDR,NULL,0);
setsockopt(fd,SOL_SOCKET,SO_REUSEADDR,(char *)&yes,sizeof yes); // reuse fix
#ifdef SO_REUSEPORT
// setsockopt(fd,SOL_SOCKET,SO_REUSEPORT,NULL,0);
setsockopt(fd,SOL_SOCKET,SO_REUSEPORT,(char *)&yes,sizeof yes); //reuse fix
#endif
// setsockopt(fd,IPPROTO_TCP,TCP_NODELAY,NULL,0);
setsockopt(fd,IPPROTO_TCP,TCP_NODELAY,(char *)&yes,sizeof yes); // reuse fix
server_address.sin_family = AF_INET;
server_address.sin_addr.s_addr = htonl( INADDR_ANY );
server_address.sin_port = htons(port);
result = bind(fd, (struct sockaddr*)&server_address, sizeof(server_address));
if( result == -1 ) {
perror("bind");
exit(1);
}
result = listen( fd, 5 );
if( result == -1 ) { /* error */
perror("listen");
exit(1);
}
FD_SET(fd, &readfds );
CREATE(session[fd], struct socket_data, 1);
if(session[fd]==NULL){
printf("out of memory : make_listen_port\n");
exit(1);
}
memset(session[fd],0,sizeof(*session[fd]));
session[fd]->func_recv = connect_client;
return fd;
}
int make_connection(long ip,int port)
{
struct sockaddr_in server_address;
int fd;
int result;
int yes = 1; // reuse fix
fd = socket( AF_INET, SOCK_STREAM, 0 );
if(fd_max<=fd) fd_max=fd+1;
// setsockopt(fd,SOL_SOCKET,SO_REUSEADDR,NULL,0);
setsockopt(fd,SOL_SOCKET,SO_REUSEADDR,(char *)&yes,sizeof yes); // reuse fix
#ifdef SO_REUSEPORT
// setsockopt(fd,SOL_SOCKET,SO_REUSEPORT,NULL,0);
setsockopt(fd,SOL_SOCKET,SO_REUSEPORT,(char *)&yes,sizeof yes); //reuse fix
#endif
// setsockopt(fd,IPPROTO_TCP,TCP_NODELAY,NULL,0);
setsockopt(fd,IPPROTO_TCP,TCP_NODELAY,(char *)&yes,sizeof yes); // reuse fix
server_address.sin_family = AF_INET;
server_address.sin_addr.s_addr = ip;
server_address.sin_port = htons(port);
#ifdef LCCWIN32
{
unsigned long val = 1;
ioctlsocket(fd, FIONBIO, &val);
}
#else
result = fcntl(fd, F_SETFL, O_NONBLOCK);
#endif
result = connect(fd, (struct sockaddr *)(&server_address),sizeof(struct sockaddr_in));
FD_SET(fd,&readfds);
CREATE(session[fd], struct socket_data, 1);
CREATE(session[fd]->rdata, unsigned char, rfifo_size);
CREATE(session[fd]->wdata, unsigned char, wfifo_size);
session[fd]->max_rdata = rfifo_size;
session[fd]->max_wdata = wfifo_size;
session[fd]->func_recv = recv_to_fifo;
session[fd]->func_send = send_from_fifo;
session[fd]->func_parse = default_func_parse;
return fd;
}
int delete_session(int fd)
{
if(fd<0 || fd>=FD_SETSIZE)
return -1;
FD_CLR(fd,&readfds);
if(session[fd]){
if(session[fd]->rdata)
free(session[fd]->rdata);
if(session[fd]->wdata)
free(session[fd]->wdata);
if(session[fd]->session_data)
free(session[fd]->session_data);
free(session[fd]);
}
session[fd]=NULL;
//printf("delete_session:%d\n",fd);
return 0;
}
int realloc_fifo(int fd,int rfifo_size,int wfifo_size)
{
struct socket_data *s=session[fd];
if( s->max_rdata != rfifo_size && s->rdata_size < rfifo_size){
RECREATE(s->rdata, unsigned char, rfifo_size);
s->max_rdata = rfifo_size;
}
if( s->max_wdata != wfifo_size && s->wdata_size < wfifo_size){
RECREATE(s->wdata, unsigned char, wfifo_size);
s->max_wdata = wfifo_size;
}
return 0;
}
int WFIFOSET(int fd,int len)
{
struct socket_data *s=session[fd];
if( s->wdata_size+len+16384 > s->max_wdata ){
realloc_fifo(fd,s->max_rdata, s->max_wdata <<1 );
printf("socket: %d wdata expanded to %d bytes.\n",fd, s->max_wdata);
}
s->wdata_size=(s->wdata_size+(len)+2048 < s->max_wdata) ?
s->wdata_size+len : (printf("socket: %d wdata lost !!\n",fd),s->wdata_size);
return 0;
}
int do_sendrecv(int next)
{
fd_set rfd,wfd;
struct timeval timeout;
int ret,i;
rfd=readfds;
FD_ZERO(&wfd);
for(i=0;i<fd_max;i++){
if(!session[i] && FD_ISSET(i,&readfds)){
printf("force clr fds %d\n",i);
FD_CLR(i,&readfds);
continue;
}
if(!session[i])
continue;
if(session[i]->wdata_size)
FD_SET(i,&wfd);
}
timeout.tv_sec = next/1000;
timeout.tv_usec = next%1000*1000;
ret = select(fd_max,&rfd,&wfd,NULL,&timeout);
if(ret<=0)
return 0;
for(i=0;i<fd_max;i++){
if(!session[i])
continue;
if(FD_ISSET(i,&wfd)){
//printf("write:%d\n",i);
if(session[i]->func_send)
//send_from_fifo(i);
session[i]->func_send(i);
}
if(FD_ISSET(i,&rfd)){
//printf("read:%d\n",i);
if(session[i]->func_recv)
//recv_to_fifo(i);
session[i]->func_recv(i);
}
}
return 0;
}
int do_parsepacket(void)
{
int i;
for(i=0;i<fd_max;i++){
if(!session[i])
continue;
if(session[i]->rdata_size==0 && session[i]->eof==0)
continue;
if(session[i]->func_parse){
session[i]->func_parse(i);
if(!session[i])
continue;
}
RFIFOFLUSH(i);
}
return 0;
}
void do_socket(void)
{
FD_ZERO(&readfds);
}
int RFIFOSKIP(int fd,int len)
{
struct socket_data *s=session[fd];
if (s->rdata_size-s->rdata_pos-len<0) {
fprintf(stderr,"too many skip\n");
exit(1);
}
s->rdata_pos = s->rdata_pos+len;
return 0;
}
int Net_Init(void)
{
#ifdef LCCWIN32
/* Start up the windows networking */
WORD version_wanted = MAKEWORD(1,1);
WSADATA wsaData;
if ( WSAStartup(version_wanted, &wsaData) != 0 ) {
printf("SYSERR: WinSock not available!\n");
exit(1);
}
#endif
return(0);
}
|