#define COMM_COMMON_H
#include "secnet.h"
+#include "util.h"
/*----- for all comms -----*/
#define UDP_MAX_SOCKETS 3 /* 2 ought to do really */
+#define MAX_AF MAX_RAW(AF_INET6,AF_INET)
+
struct udpsock {
union iaddr addr;
int fd;
+ bool_t experienced[/*0=recv,1=send*/2][MAX_AF+1][/*success?*/2];
};
struct udpsocks {
void udp_destroy_socket(struct udpcommon *uc, struct udpsock *us);
/* Idempotent. No errors are possible. */
+const char *af_name(int af);
+void udp_sock_experienced(struct log_if *lg, struct udpcommon *uc,
+ const char *socksdesc, struct udpsock *us,
+ bool_t recvsend, int af /* 0 means any */,
+ int r, int errnoval);
+
void udp_socks_register(struct udpcommon *uc, struct udpsocks *socks);
void udp_socks_deregister(struct udpcommon *uc, struct udpsocks *socks);
return 0;
}
+const char *af_name(int af)
+{
+ switch (af) {
+ case AF_INET6: return "IPv6";
+ case AF_INET: return "IPv4";
+ case 0: return "(any)";
+ default: abort();
+ }
+}
+
+void udp_sock_experienced(struct log_if *lg, struct udpcommon *uc,
+ const char *socksdesc, struct udpsock *us,
+ bool_t recvsend, int af,
+ int r, int errnoval)
+{
+ bool_t success=r>=0;
+ if (us->experienced[recvsend][af][success]++)
+ return;
+ lg_perror(lg, uc->cc.cl.description, &uc->cc.loc,
+ success ? M_INFO : M_WARNING,
+ success ? 0 : errnoval,
+ "%s %s experiencing some %s %s%s%s",
+ socksdesc,iaddr_to_string(&us->addr),
+ success?"success":"trouble",
+ recvsend?"transmitting":"receiving",
+ af?" ":"", af?af_name(af):"");
+}
+
static void udp_socks_afterpoll(void *state, struct pollfd *fds, int nfds)
{
struct udpsocks *socks=state;
}
BUF_ASSERT_FREE(cc->rbuf);
} else { /* rv<=0 */
+ if (errno!=EINTR && !iswouldblock(errno))
+ udp_sock_experienced(0,uc, "socket",us, 0,0, rv,errno);
BUF_FREE(cc->rbuf);
}
} while (rv>=0);
memcpy(sa,&dest->ia.sin.sin_addr,4);
memset(sa+4,0,4);
memcpy(sa+6,&dest->ia.sin.sin_port,2);
- sendto(us->fd,sa,buf->size+8,0,&uc->proxy.sa,
+ int r=sendto(us->fd,sa,buf->size+8,0,&uc->proxy.sa,
iaddr_socklen(&uc->proxy));
+ udp_sock_experienced(0,uc, "proxy",us, 1,0, r,errno);
buf_unprepend(buf,8);
} else {
int i,r;
continue;
r=sendto(us->fd, buf->start, buf->size, 0,
&dest->ia.sa, iaddr_socklen(&dest->ia));
+ udp_sock_experienced(0,uc, "socket",us, 1,af, r,errno);
if (r>=0) return True;
if (!(errno==EAFNOSUPPORT || errno==ENETUNREACH))
/* who knows what that error means? */
goto failed; \
}while(0)
+ FILLZERO(us->experienced);
us->fd=socket(addr->sa.sa_family, SOCK_DGRAM, IPPROTO_UDP);
if (us->fd<0) FAIL("socket");
setnonblock(us->fd);