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
|
// Copyright (c) Athena Dev Teams - Licensed under GNU GPL
// For more information, see LICENCE in the main folder
#ifndef _SOCKET_H_
#define _SOCKET_H_
#include "../common/cbasetypes.h"
#ifdef WIN32
#include "../common/winapi.h"
typedef long in_addr_t;
#else
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#endif
#include <time.h>
#define FIFOSIZE_SERVERLINK 256*1024
// socket I/O macros
#define RFIFOHEAD(fd)
#define WFIFOHEAD(fd, size) do{ if((fd) && session[fd]->wdata_size + (size) > session[fd]->max_wdata ) realloc_writefifo(fd, size); }while(0)
#define RFIFOP(fd,pos) (session[fd]->rdata + session[fd]->rdata_pos + (pos))
#define WFIFOP(fd,pos) (session[fd]->wdata + session[fd]->wdata_size + (pos))
#define RFIFOB(fd,pos) (*(uint8*)RFIFOP(fd,pos))
#define WFIFOB(fd,pos) (*(uint8*)WFIFOP(fd,pos))
#define RFIFOW(fd,pos) (*(uint16*)RFIFOP(fd,pos))
#define WFIFOW(fd,pos) (*(uint16*)WFIFOP(fd,pos))
#define RFIFOL(fd,pos) (*(uint32*)RFIFOP(fd,pos))
#define WFIFOL(fd,pos) (*(uint32*)WFIFOP(fd,pos))
#define RFIFOQ(fd,pos) (*(uint64*)RFIFOP(fd,pos))
#define WFIFOQ(fd,pos) (*(uint64*)WFIFOP(fd,pos))
#define RFIFOSPACE(fd) (session[fd]->max_rdata - session[fd]->rdata_size)
#define WFIFOSPACE(fd) (session[fd]->max_wdata - session[fd]->wdata_size)
#define RFIFOREST(fd) (session[fd]->flag.eof ? 0 : session[fd]->rdata_size - session[fd]->rdata_pos)
#define RFIFOFLUSH(fd) \
do { \
if(session[fd]->rdata_size == session[fd]->rdata_pos){ \
session[fd]->rdata_size = session[fd]->rdata_pos = 0; \
} else { \
session[fd]->rdata_size -= session[fd]->rdata_pos; \
memmove(session[fd]->rdata, session[fd]->rdata+session[fd]->rdata_pos, session[fd]->rdata_size); \
session[fd]->rdata_pos = 0; \
} \
} while(0)
// buffer I/O macros
#define RBUFP(p,pos) (((uint8*)(p)) + (pos))
#define RBUFB(p,pos) (*(uint8*)RBUFP((p),(pos)))
#define RBUFW(p,pos) (*(uint16*)RBUFP((p),(pos)))
#define RBUFL(p,pos) (*(uint32*)RBUFP((p),(pos)))
#define RBUFQ(p,pos) (*(uint64*)RBUFP((p),(pos)))
#define WBUFP(p,pos) (((uint8*)(p)) + (pos))
#define WBUFB(p,pos) (*(uint8*)WBUFP((p),(pos)))
#define WBUFW(p,pos) (*(uint16*)WBUFP((p),(pos)))
#define WBUFL(p,pos) (*(uint32*)WBUFP((p),(pos)))
#define WBUFQ(p,pos) (*(uint64*)WBUFP((p),(pos)))
#define TOB(n) ((uint8)((n)&UINT8_MAX))
#define TOW(n) ((uint16)((n)&UINT16_MAX))
#define TOL(n) ((uint32)((n)&UINT32_MAX))
// Struct declaration
typedef int (*RecvFunc)(int fd);
typedef int (*SendFunc)(int fd);
typedef int (*ParseFunc)(int fd);
struct socket_data
{
struct {
unsigned char eof : 1;
unsigned char server : 1;
} flag;
uint32 client_addr; // remote client address
uint8 *rdata, *wdata;
size_t max_rdata, max_wdata;
size_t rdata_size, wdata_size;
size_t rdata_pos;
time_t rdata_tick; // time of last recv (for detecting timeouts); zero when timeout is disabled
RecvFunc func_recv;
SendFunc func_send;
ParseFunc func_parse;
void* session_data; // stores application-specific data related to the session
};
// Data prototype declaration
extern struct socket_data* session[FD_SETSIZE];
extern int fd_max;
extern time_t last_tick;
extern time_t stall_time;
//////////////////////////////////
// some checking on sockets
extern bool session_isValid(int fd);
extern bool session_isActive(int fd);
//////////////////////////////////
// Function prototype declaration
int make_listen_bind(uint32 ip, uint16 port);
int make_connection(uint32 ip, uint16 port, bool silent);
int realloc_fifo(int fd, unsigned int rfifo_size, unsigned int wfifo_size);
int realloc_writefifo(int fd, size_t addition);
int WFIFOSET(int fd, size_t len);
int RFIFOSKIP(int fd, size_t len);
int do_sockets(int next);
void do_close(int fd);
void socket_init(void);
void socket_final(void);
extern void flush_fifo(int fd);
extern void flush_fifos(void);
extern void set_nonblocking(int fd, unsigned long yes);
void set_defaultparse(ParseFunc defaultparse);
// hostname/ip conversion functions
uint32 host2ip(const char* hostname);
const char* ip2str(uint32 ip, char ip_str[16]);
uint32 str2ip(const char* ip_str);
#define CONVIP(ip) ((ip)>>24)&0xFF,((ip)>>16)&0xFF,((ip)>>8)&0xFF,((ip)>>0)&0xFF
#define MAKEIP(a,b,c,d) (uint32)( ( ( (a)&0xFF ) << 24 ) | ( ( (b)&0xFF ) << 16 ) | ( ( (c)&0xFF ) << 8 ) | ( ( (d)&0xFF ) << 0 ) )
uint16 ntows(uint16 netshort);
int socket_getips(uint32* ips, int max);
extern uint32 addr_[16]; // ip addresses of local host (host byte order)
extern int naddr_; // # of ip addresses
void set_eof(int fd);
/// Use a shortlist of sockets instead of iterating all sessions for sockets
/// that have data to send or need eof handling.
/// Adapted to use a static array instead of a linked list.
///
/// @author Buuyo-tama
#define SEND_SHORTLIST
#ifdef SEND_SHORTLIST
// Add a fd to the shortlist so that it'll be recognized as a fd that needs
// sending done on it.
void send_shortlist_add_fd(int fd);
// Do pending network sends (and eof handling) from the shortlist.
void send_shortlist_do_sends();
#endif
#endif /* _SOCKET_H_ */
|
