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
|
#include <sys/socket.h>//socket
#include <sys/types.h>//socket
#include <netinet/in.h>
#include <arpa/inet.h>
#include <string.h> //strerror
#include <errno.h>//strerror
#include <fcntl.h>//fcntl
#include <unistd.h>//fcntl
#include <net/if.h>//fcntl
#include <stdlib.h>//free
#include <sys/ioctl.h>//ioctl
#include "businessman_error.h"
#include "businessman_memory.h"
#include "businessman_limit.h"
#include "network_layer.h"
#ifdef DEPLOY_YSP_SYSTEM
//this function defined in df_B feedback.c
extern "C" int pag_send_av_udp(int Datasize, const char *pData, u_int src_ip, u_int dst_ip, u_short src_prt, u_short dst_prt);
#endif
void set_network_interface(network_space_t* network_layer, int interface_type,const char* interface_name){
switch(interface_type)
{
case BIZMAN_INTERFACE_SOCKET:
network_layer->socket_interface_name=(char*)b_malloc(strlen(interface_name)+1);
memcpy(network_layer->socket_interface_name,interface_name,strlen(interface_name));
break;
#ifdef DEPLOY_YSP_SYSTEM
case BIZMAN_INTERFACE_PAG:
network_layer->using_pag_send=TRUE;
break;
#endif
default:
set_user_error("invalid interface type %d",interface_type);
break;
}
return ;
}
int set_network_listen_port(network_space_t* network_layer, unsigned short port)
{
network_layer->listen_port=port;
return 0;
}
int set_network_send_port(network_space_t* network_layer, unsigned short port)
{
network_layer->send_port=port;
return 0;
}
int startup_udp(network_space_t* network_layer)
{
unsigned short bind_port=network_layer->listen_port;
int sd_udp=-1;
int flags;
struct ifreq ifr;
if(-1==(sd_udp = socket(AF_INET, SOCK_DGRAM, 0)))
{
set_user_error( "socket error: %d %s, restart socket.", errno, strerror(errno));
sd_udp=-1;
}
if(NULL!=network_layer->socket_interface_name)
{
strcpy(ifr.ifr_name,network_layer->socket_interface_name);
if (ioctl(sd_udp, SIOCGIFADDR, &ifr) < 0)
{
set_user_error( "get interface %s addr error",network_layer->socket_interface_name);
return -1;
}
network_layer->src_addr = ((struct sockaddr_in*)&(ifr.ifr_addr))->sin_addr.s_addr;
}
flags=fcntl(sd_udp,F_GETFL);
flags|=O_NONBLOCK;
if(fcntl(sd_udp,F_SETFL,flags)==-1)
{
set_user_error( "socket error: %d %s, restart socket.", errno, strerror(errno));
sd_udp=-1;
}
int opt=1;
struct sockaddr_in socket;
memset(&socket, 0,sizeof(socket));
socket.sin_family = AF_INET;
socket.sin_port = htons(bind_port);
socket.sin_addr.s_addr = htonl(INADDR_ANY);
if (setsockopt (sd_udp, SOL_SOCKET, SO_REUSEADDR, (char *)&opt, sizeof(opt) ) < 0) {
set_user_error("setsockopt error: %d %s, restart socket.", errno, strerror(errno));
close (sd_udp);
sd_udp=-1;
return sd_udp;
}
if(-1 == bind(sd_udp, (struct sockaddr *)(&socket), sizeof(socket))) {
set_user_error("bind error: %d %s, restart socket.", errno, strerror(errno));
close (sd_udp);
sd_udp=-1;
return sd_udp;
}
return sd_udp;
}
int startup_pag_send(){
return 1;
}
int init_network_layer(network_space_t* network_space)
{
if(TRUE==network_space->using_pag_send)
{
if(network_space->listen_port==0)
{
set_user_error("listen port is necessary in pag send");
return -1;
}
if(NULL==network_space->socket_interface_name)
{
set_user_error("socket interface name is necessary in pag send");
}
}
network_space->socket_handle=startup_udp(network_space);
return 1;
}
network_space_t* get_network_handle(void)
{
return (network_space_t*)b_malloc(sizeof(network_space_t));
}
void destroy_network_handle(network_space_t* network_layer)
{
if(network_layer->socket_handle>0)
{
close(network_layer->socket_handle);
}
if(NULL!=network_layer->socket_interface_name)
{
free(network_layer->socket_interface_name);
}
free(network_layer);
}
int do_actual_send(network_space_t * network_handle, unsigned int dest_ip, unsigned short dest_port, const char * data, int len)
{
int to_send_len=len;
int already_sended_len=0,this_sended_len=0;
struct sockaddr_in addr;
addr.sin_family = AF_INET;
addr.sin_addr.s_addr =dest_ip;
addr.sin_port = htons(dest_port);
if(TRUE==network_handle->using_pag_send)
{
#ifdef DEPLOY_YSP_SYSTEM
if(0>pag_send_av_udp(len,data, network_handle->src_addr, dest_ip,network_handle->listen_port,dest_port))
{
set_user_error("pag send error.");
}
#endif
}
else
{
while(to_send_len>already_sended_len)
{
this_sended_len=sendto(network_handle->socket_handle,(void*)(data+already_sended_len),
to_send_len-already_sended_len,
0,
(struct sockaddr *)&(addr),
sizeof(addr));
if(this_sended_len==-1)
{
if((EAGAIN == errno)||( EINTR == errno )|| (EWOULDBLOCK==errno))
{
continue;
}
else
{
set_user_error("at send,socket error: %d %s", errno, strerror(errno));
return -1;
}
}
already_sended_len=+this_sended_len;
}
}
return 0;
}
int do_actual_recv(network_space_t *network_handle,unsigned int *src_ip,unsigned short* src_port,char*buf,int buf_len)
{
int received_length=-1;
struct sockaddr_in src_socket;
int socket_length=sizeof(src_socket);
received_length = recvfrom(network_handle->socket_handle, buf, buf_len, 0, (struct sockaddr *)&src_socket, (socklen_t*)(&socket_length));
if(-1==received_length)
{
// set_user_error( "UDP rcv error %d, %s", errno, strerror(errno));
}
else
{
*src_ip=src_socket.sin_addr.s_addr;
*src_port=ntohs(src_socket.sin_port);
}
return received_length;
}
|
