82 lines
2.2 KiB
C
82 lines
2.2 KiB
C
#include <pthread.h>
|
|
#include <time.h>
|
|
#include "loop.h"
|
|
#include "conf.h"
|
|
#include "main.h"
|
|
#include "sblist.h"
|
|
#include "sock.h"
|
|
|
|
struct loop_record {
|
|
union sockaddr_union addr;
|
|
time_t tstamp;
|
|
};
|
|
|
|
static sblist *loop_records;
|
|
static pthread_mutex_t loop_records_lock = PTHREAD_MUTEX_INITIALIZER;
|
|
|
|
void loop_records_init(void) {
|
|
loop_records = sblist_new(sizeof (struct loop_record), 32);
|
|
}
|
|
|
|
void loop_records_destroy(void) {
|
|
sblist_free(loop_records);
|
|
loop_records = 0;
|
|
}
|
|
|
|
#if 0
|
|
static void su_to_str(union sockaddr_union *addr, char *buf) {
|
|
int af = addr->v4.sin_family;
|
|
unsigned port = ntohs(af == AF_INET ? addr->v4.sin_port : addr->v6.sin6_port);
|
|
char portb[32];
|
|
sprintf(portb, ":%u", port);
|
|
getpeer_information (addr, buf, 256);
|
|
strcat(buf, portb);
|
|
}
|
|
#endif
|
|
|
|
void loop_records_add(union sockaddr_union *addr) {
|
|
time_t now =time(0);
|
|
struct loop_record rec;
|
|
pthread_mutex_lock(&loop_records_lock);
|
|
rec.tstamp = now;
|
|
rec.addr = *addr;
|
|
sblist_add(loop_records, &rec);
|
|
pthread_mutex_unlock(&loop_records_lock);
|
|
}
|
|
|
|
#define TIMEOUT_SECS 15
|
|
|
|
int connection_loops (union sockaddr_union *addr) {
|
|
int ret = 0, af, our_af = addr->v4.sin_family;
|
|
void *ipdata, *our_ipdata = our_af == AF_INET ? (void*)&addr->v4.sin_addr.s_addr : (void*)&addr->v6.sin6_addr.s6_addr;
|
|
size_t i, cmp_len = our_af == AF_INET ? sizeof(addr->v4.sin_addr.s_addr) : sizeof(addr->v6.sin6_addr.s6_addr);
|
|
unsigned port, our_port = ntohs(our_af == AF_INET ? addr->v4.sin_port : addr->v6.sin6_port);
|
|
time_t now = time(0);
|
|
|
|
pthread_mutex_lock(&loop_records_lock);
|
|
for (i = 0; i < sblist_getsize(loop_records); ) {
|
|
struct loop_record *rec = sblist_get(loop_records, i);
|
|
|
|
if (rec->tstamp + TIMEOUT_SECS < now) {
|
|
sblist_delete(loop_records, i);
|
|
continue;
|
|
}
|
|
|
|
if (!ret) {
|
|
af = rec->addr.v4.sin_family;
|
|
if (af != our_af) goto next;
|
|
port = ntohs(af == AF_INET ? rec->addr.v4.sin_port : rec->addr.v6.sin6_port);
|
|
if (port != our_port) goto next;
|
|
ipdata = af == AF_INET ? (void*)&rec->addr.v4.sin_addr.s_addr : (void*)&rec->addr.v6.sin6_addr.s6_addr;
|
|
if (!memcmp(ipdata, our_ipdata, cmp_len)) {
|
|
ret = 1;
|
|
}
|
|
}
|
|
next:
|
|
i++;
|
|
}
|
|
pthread_mutex_unlock(&loop_records_lock);
|
|
return ret;
|
|
}
|
|
|