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
|
/**
* This file is part of Hercules.
* http://herc.ws - http://github.com/HerculesWS/Hercules
*
* Copyright (C) 2012-2018 Hercules Dev Team
* Copyright (C) Athena Dev Teams
*
* Hercules is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef COMMON_SOCKET_H
#define COMMON_SOCKET_H
#include "common/hercules.h"
#include "common/db.h"
#ifdef WIN32
# include "common/winapi.h"
typedef long in_addr_t;
#else
# include <netinet/in.h>
# include <sys/socket.h>
# include <sys/types.h>
#endif
/* Forward Declarations */
struct hplugin_data_store;
struct config_setting_t;
#define FIFOSIZE_SERVERLINK 256*1024
// socket I/O macros
#define RFIFOHEAD(fd)
#define WFIFOHEAD(fd, size) sockt->wfifohead(fd, size)
#define RFIFOP(fd,pos) ((const void *)(sockt->session[fd]->rdata + sockt->session[fd]->rdata_pos + (pos)))
#define WFIFOP(fd,pos) ((void *)(sockt->session[fd]->wdata + sockt->session[fd]->wdata_size + (pos)))
#define RFIFOB(fd,pos) (*(const uint8*)RFIFOP((fd),(pos)))
#define WFIFOB(fd,pos) (*(uint8*)WFIFOP((fd),(pos)))
#define RFIFOW(fd,pos) (*(const uint16*)RFIFOP((fd),(pos)))
#define WFIFOW(fd,pos) (*(uint16*)WFIFOP((fd),(pos)))
#define RFIFOL(fd,pos) (*(const uint32*)RFIFOP((fd),(pos)))
#define WFIFOL(fd,pos) (*(uint32*)WFIFOP((fd),(pos)))
#define RFIFOQ(fd,pos) (*(const uint64*)RFIFOP((fd),(pos)))
#define WFIFOQ(fd,pos) (*(uint64*)WFIFOP((fd),(pos)))
#define RFIFOSPACE(fd) (sockt->session[fd]->max_rdata - sockt->session[fd]->rdata_size)
#define WFIFOSPACE(fd) (sockt->session[fd]->max_wdata - sockt->session[fd]->wdata_size)
#define RFIFOREST(fd) (sockt->session[fd]->flag.eof ? 0 : sockt->session[fd]->rdata_size - sockt->session[fd]->rdata_pos)
#define RFIFOFLUSH(fd) \
do { \
if(sockt->session[fd]->rdata_size == sockt->session[fd]->rdata_pos){ \
sockt->session[fd]->rdata_size = sockt->session[fd]->rdata_pos = 0; \
} else { \
sockt->session[fd]->rdata_size -= sockt->session[fd]->rdata_pos; \
memmove(sockt->session[fd]->rdata, sockt->session[fd]->rdata+sockt->session[fd]->rdata_pos, sockt->session[fd]->rdata_size); \
sockt->session[fd]->rdata_pos = 0; \
} \
} while(0)
#define WFIFOSET(fd, len) (sockt->wfifoset(fd, len, true))
#define WFIFOSET2(fd, len) (sockt->wfifoset(fd, len, false))
#define RFIFOSKIP(fd, len) (sockt->rfifoskip(fd, len))
/* [Ind/Hercules] */
#define RFIFO2PTR(fd) ((const void *)(sockt->session[fd]->rdata + sockt->session[fd]->rdata_pos))
#define RP2PTR(fd) RFIFO2PTR(fd)
/* [Hemagx/Hercules] */
#define WFIFO2PTR(fd) ((void *)(sockt->session[fd]->wdata + sockt->session[fd]->wdata_size))
#define WP2PTR(fd) WFIFO2PTR(fd)
// buffer I/O macros
static inline const void *RBUFP_(const void *p, int pos) __attribute__((const, unused));
static inline const void *RBUFP_(const void *p, int pos)
{
return ((const uint8 *)p) + pos;
}
#define RBUFP(p,pos) RBUFP_(p, (int)(pos))
#define RBUFB(p,pos) (*(const uint8 *)RBUFP((p),(pos)))
#define RBUFW(p,pos) (*(const uint16 *)RBUFP((p),(pos)))
#define RBUFL(p,pos) (*(const uint32 *)RBUFP((p),(pos)))
#define RBUFQ(p,pos) (*(const uint64 *)RBUFP((p),(pos)))
static inline void *WBUFP_(void *p, int pos) __attribute__((const, unused));
static inline void *WBUFP_(void *p, int pos)
{
return ((uint8 *)p) + pos;
}
#define WBUFP(p,pos) WBUFP_(p, (int)(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;
unsigned char ping : 2;
unsigned char validate : 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;
uint32 last_head_size;
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
struct hplugin_data_store *hdata; ///< HPM Plugin Data Store.
};
struct hSockOpt {
unsigned int silent : 1;
unsigned int setTimeo : 1;
};
/// Subnet/IP range in the IP/Mask format.
struct s_subnet {
uint32 ip;
uint32 mask;
};
/// A vector of subnets/IP ranges.
VECTOR_STRUCT_DECL(s_subnet_vector, struct s_subnet);
/// 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
// Note: purposely returns four comma-separated arguments
#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 ) ))
/// Applies a subnet mask to an IP
#define APPLY_MASK(ip, mask) ((ip)&(mask))
/// Verifies the match between two IPs, with a subnet mask applied
#define SUBNET_MATCH(ip1, ip2, mask) (APPLY_MASK((ip1), (mask)) == APPLY_MASK((ip2), (mask)))
/**
* Socket.c interface, mostly for reading however.
**/
struct socket_interface {
int fd_max;
/* */
time_t stall_time;
time_t last_tick;
/* */
uint32 addr_[16]; // ip addresses of local host (host byte order)
int naddr_; // # of ip addresses
bool validate;
struct socket_data **session;
struct s_subnet_vector lan_subnets; ///< LAN subnets.
struct s_subnet_vector trusted_ips; ///< Trusted IP ranges
struct s_subnet_vector allowed_ips; ///< Allowed server IP ranges
/* */
void (*init) (void);
void (*final) (void);
/* */
int (*perform) (int next);
/* [Ind/Hercules] - socket_datasync */
void (*datasync) (int fd, bool send);
/* */
int (*make_listen_bind) (uint32 ip, uint16 port);
int (*make_connection) (uint32 ip, uint16 port, struct hSockOpt *opt);
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, bool validate);
void (*wfifohead) (int fd, size_t len);
int (*rfifoskip) (int fd, size_t len);
void (*close) (int fd);
void (*validateWfifo) (int fd, size_t len);
/* */
bool (*session_is_valid) (int fd);
bool (*session_is_active) (int fd);
/* */
void (*flush) (int fd);
void (*flush_fifos) (void);
int (*connect_client) (int listen_fd);
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);
uint32 (*str2ip) (const char* ip_str);
/* */
uint16 (*ntows) (uint16 netshort);
/* */
int (*getips) (uint32* ips, int max);
/* */
void (*eof) (int fd);
uint32 (*lan_subnet_check) (uint32 ip, struct s_subnet *info);
bool (*allowed_ip_check) (uint32 ip);
bool (*trusted_ip_check) (uint32 ip);
int (*net_config_read_sub) (struct config_setting_t *t, struct s_subnet_vector *list, const char *filename, const char *groupname);
void (*net_config_read) (const char *filename);
};
#ifdef HERCULES_CORE
void socket_defaults(void);
#endif // HERCULES_CORE
HPShared struct socket_interface *sockt;
#endif /* COMMON_SOCKET_H */
|
