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
|
/* Copyright (C) 2000 MySQL AB
This program 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; version 2 of the License.
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, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
/*
* Vio Lite.
* Purpose: include file for Vio that will work with C and C++
*/
#ifndef LIBDRIZZLE_VIO_H
#define LIBDRIZZLE_VIO_H
#include <sys/socket.h>
#include <errno.h>
/* Simple vio interface in C; The functions are implemented in violite.c */
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
enum enum_vio_type
{
VIO_CLOSED, VIO_TYPE_TCPIP, VIO_TYPE_SOCKET, VIO_TYPE_NAMEDPIPE,
VIO_TYPE_SSL, VIO_TYPE_SHARED_MEMORY
};
typedef struct st_vio Vio;
#define VIO_LOCALHOST 1 /* a localhost connection */
#define VIO_BUFFERED_READ 2 /* use buffered read */
#define VIO_READ_BUFFER_SIZE 16384 /* size of read buffer */
Vio* vio_new(int sd, enum enum_vio_type type, unsigned int flags);
void vio_delete(Vio* vio);
int vio_close(Vio* vio);
void vio_reset(Vio* vio, enum enum_vio_type type, int sd, uint32_t flags);
size_t vio_read(Vio *vio, unsigned char * buf, size_t size);
size_t vio_read_buff(Vio *vio, unsigned char * buf, size_t size);
size_t vio_write(Vio *vio, const unsigned char * buf, size_t size);
int vio_blocking(Vio *vio, bool onoff, bool *old_mode);
bool vio_is_blocking(Vio *vio);
/* setsockopt TCP_NODELAY at IPPROTO_TCP level, when possible */
int vio_fastsend(Vio *vio);
/* setsockopt SO_KEEPALIVE at SOL_SOCKET level, when possible */
int32_t vio_keepalive(Vio *vio, bool onoff);
/* Whenever we should retry the last read/write operation. */
bool vio_should_retry(Vio *vio);
/* Check that operation was timed out */
bool vio_was_interrupted(Vio *vio);
/* Short text description of the socket for those, who are curious.. */
const char* vio_description(Vio *vio);
/* Return the type of the connection */
enum enum_vio_type vio_type(Vio* vio);
/* Return last error number */
int vio_errno(Vio*vio);
/* Get socket number */
int vio_fd(Vio*vio);
/* Remote peer's address and name in text form */
bool vio_peer_addr(Vio *vio, char *buf, uint16_t *port, size_t buflen);
bool vio_poll_read(Vio *vio, int timeout);
bool vio_peek_read(Vio *vio, unsigned int *bytes);
void vio_end(void);
void vio_ignore_timeout(Vio *vio, bool is_sndtimeo, int32_t timeout);
void vio_timeout(Vio *vio, bool is_sndtimeo, int32_t timeout);
#ifdef __cplusplus
}
#endif
#if !defined(DONT_MAP_VIO)
#define vio_delete(vio) (vio)->viodelete(vio)
#define vio_errno(vio) (vio)->vioerrno(vio)
#define vio_read(vio, buf, size) ((vio)->read)(vio,buf,size)
#define vio_write(vio, buf, size) ((vio)->write)(vio, buf, size)
#define vio_blocking(vio, set_blocking_mode, old_mode)\
(vio)->vioblocking(vio, set_blocking_mode, old_mode)
#define vio_is_blocking(vio) (vio)->is_blocking(vio)
#define vio_fastsend(vio) (vio)->fastsend(vio)
#define vio_keepalive(vio, set_keep_alive) (vio)->viokeepalive(vio, set_keep_alive)
#define vio_should_retry(vio) (vio)->should_retry(vio)
#define vio_was_interrupted(vio) (vio)->was_interrupted(vio)
#define vio_close(vio) ((vio)->vioclose)(vio)
#define vio_peer_addr(vio, buf, prt, buflen) (vio)->peer_addr(vio, buf, prt, buflen)
#define vio_timeout(vio, which, seconds) (vio)->timeout(vio, which, seconds)
#endif /* !defined(DONT_MAP_VIO) */
/* This enumerator is used in parser - should be always visible */
enum SSL_type
{
SSL_TYPE_NOT_SPECIFIED= -1,
SSL_TYPE_NONE,
SSL_TYPE_ANY,
SSL_TYPE_X509,
SSL_TYPE_SPECIFIED
};
/* HFTODO - hide this if we don't want client in embedded server */
/* This structure is for every connection on both sides */
struct st_vio
{
int sd; /* int - real or imaginary */
int fcntl_mode; /* Buffered fcntl(sd,F_GETFL) */
struct sockaddr_storage local; /* Local internet address */
struct sockaddr_storage remote; /* Remote internet address */
int addrLen; /* Length of remote address */
enum enum_vio_type type; /* Type of connection */
char desc[30]; /* String description */
char *read_pos; /* start of unfetched data in the
read buffer */
char *read_end; /* end of unfetched data */
/* function pointers. They are similar for socket/SSL/whatever */
void (*viodelete)(Vio*);
int32_t (*vioerrno)(Vio*);
size_t (*read)(Vio*, unsigned char *, size_t);
size_t (*write)(Vio*, const unsigned char *, size_t);
int32_t (*vioblocking)(Vio*, bool, bool *);
bool (*is_blocking)(Vio*);
int32_t (*viokeepalive)(Vio*, bool);
int32_t (*fastsend)(Vio*);
bool (*peer_addr)(Vio*, char *, uint16_t *, size_t);
void (*in_addr)(Vio*, struct sockaddr_storage*);
bool (*should_retry)(Vio*);
bool (*was_interrupted)(Vio*);
int32_t (*vioclose)(Vio*);
void (*timeout)(Vio*, bool is_sndtimeo, int32_t timeout);
char *read_buffer; /* buffer for vio_read_buff */
};
#endif /* LIBDRIZZLE_VIO_H */
|