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
|
#include <stdio.h>
#include <signal.h>
#include <sys/epoll.h>
#include <unistd.h>
#include "nfcommander.h"
#include "config.h"
#include "reader.h"
#include "control.h"
static volatile sig_atomic_t shutdown_requested = 0;
static int epoll_fd = -1;
static void signal_handler(int signum){
shutdown_requested = 1;
}
static int usage(char* fn){
printf("NFCommander %s - trigger actions based on near-field tags\n",
NFCOMMANDER_VERSION);
printf("\tUsage: %s <config-file>\n", fn);
return EXIT_FAILURE;
}
int core_manage_fd(int fd, int manage, notification_target_t system){
struct epoll_event event = {
.events = EPOLLIN,
.data.u32 = system
};
if(epoll_ctl(epoll_fd, manage ? EPOLL_CTL_ADD : EPOLL_CTL_DEL, fd, &event)){
fprintf(stderr, "Failed to modify epoll instance\n");
shutdown_requested = 1;
return 1;
}
return 0;
}
int main(int argc, char** argv){
if(argc < 2){
return usage(argv[0]);
}
//set up epoll instance
struct epoll_event events[10];
epoll_fd = epoll_create1(EPOLL_CLOEXEC);
if(epoll_fd < 0){
printf("Failed to create epoll instance\n");
return EXIT_FAILURE;
}
//read configuration
if(config_read(argv[1])){
return usage(argv[0]);
}
//start reader api
reader_init();
//start control api
control_start();
//handle signals
signal(SIGINT, signal_handler);
signal(SIGPIPE, SIG_IGN);
//handle events
while(!shutdown_requested){
int event_count = epoll_wait(epoll_fd, events, sizeof(events) / sizeof(struct epoll_event), 1000);
if(event_count < 0){
break;
}
printf("%d events\n", event_count);
}
//clean up
close(epoll_fd);
epoll_fd = -1;
reader_free();
control_free();
config_free();
}
|
