FdEventHandlerPtr
do_accept(int fd,
int (*handler) (int, FdEventHandlerPtr, AcceptRequestPtr), void *data)
{
FdEventHandlerPtr event;
int done;
event = schedule_accept(fd, handler, data);
if (event == NULL) {
done = (*handler) (-ENOMEM, NULL, NULL);
assert(done);
}
return event;
}
FdEventHandlerPtr
do_accept(int fd,
int (*handler)(int, FdEventHandlerPtr, AcceptRequestPtr),
void *data)
{
FdEventHandlerPtr event;
int done;
event = schedule_accept(fd, handler, data);
if(event == NULL) {
done = (*handler)(-ENOMEM, NULL, NULL);
assert(done);
}
/* But don't invoke it now - this will delay accept if under load. */
return event;
}
FdEventHandlerPtr
create_listener(char *address, int port,
int (*handler)(int, FdEventHandlerPtr, AcceptRequestPtr),
void *data)
{
int fd, rc;
int one = 1;
int done;
struct sockaddr_in addr;
#ifdef HAVE_IPv6
int inet6 = 1;
struct sockaddr_in6 addr6;
#else
int inet6 = 0;
#endif
if(inet6 && address) {
struct in_addr buf;
rc = inet_aton(address, &buf);
if(rc == 1)
inet6 = 0;
}
fd = -1;
errno = EAFNOSUPPORT;
#ifdef HAVE_IPv6
if(inet6) {
fd = socket(PF_INET6, SOCK_STREAM, 0);
}
#endif
if(fd < 0 && (errno == EPROTONOSUPPORT || errno == EAFNOSUPPORT)) {
inet6 = 0;
fd = socket(PF_INET, SOCK_STREAM, 0);
}
if(fd < 0) {
done = (*handler)(-errno, NULL, NULL);
assert(done);
return NULL;
}
rc = setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (char *)&one, sizeof(one));
if(rc < 0) do_log_error(L_WARN, errno, "Couldn't set SO_REUSEADDR");
if(inet6) {
#ifdef HAVE_IPv6
rc = setV6only(fd, 0);
if(rc < 0)
/* Reportedly OpenBSD returns an error for that. So only
log it as a debugging message. */
do_log_error(D_CLIENT_CONN, errno, "Couldn't reset IPV6_V6ONLY");
memset(&addr6, 0, sizeof(addr6));
rc = inet_pton(AF_INET6, address, &addr6.sin6_addr);
if(rc != 1) {
done = (*handler)(rc == 0 ? -ESYNTAX : -errno, NULL, NULL);
assert(done);
return NULL;
}
addr6.sin6_family = AF_INET6;
addr6.sin6_port = htons(port);
rc = bind(fd, (struct sockaddr*)&addr6, sizeof(addr6));
#else
rc = -1;
errno = EAFNOSUPPORT;
#endif
} else {
memset(&addr, 0, sizeof(addr));
rc = inet_aton(address, &addr.sin_addr);
if(rc != 1) {
done = (*handler)(rc == 0 ? -ESYNTAX : -errno, NULL, NULL);
assert(done);
close(fd);
return NULL;
}
addr.sin_family = AF_INET;
addr.sin_port = htons(port);
rc = bind(fd, (struct sockaddr*)&addr, sizeof(addr));
}
if(rc < 0) {
do_log_error(L_ERROR, errno, "Couldn't bind");
CLOSE(fd);
done = (*handler)(-errno, NULL, NULL);
assert(done);
return NULL;
}
rc = setNonblocking(fd, 1);
if(rc < 0) {
do_log_error(L_ERROR, errno, "Couldn't set non blocking mode");
CLOSE(fd);
done = (*handler)(-errno, NULL, NULL);
assert(done);
return NULL;
}
rc = listen(fd, 1024);
if(rc < 0) {
do_log_error(L_ERROR, errno, "Couldn't listen");
CLOSE(fd);
done = (*handler)(-errno, NULL, NULL);
assert(done);
return NULL;
}
do_log(L_INFO, "Established listening socket on port %d.\n", port);
return schedule_accept(fd, handler, data);
}
FdEventHandlerPtr
create_listener(char *address, int port,
int (*handler) (int, FdEventHandlerPtr, AcceptRequestPtr),
void *data)
{
int fd, rc;
int one = 1;
int done;
struct sockaddr_in addr;
int inet6 = 0;
if (inet6 && address) {
struct in_addr buf;
rc = inet_aton(address, &buf);
if (rc == 1)
inet6 = 0;
}
fd = -1;
errno = EAFNOSUPPORT;
if (fd < 0 && (errno == EPROTONOSUPPORT || errno == EAFNOSUPPORT)) {
inet6 = 0;
fd = socket(PF_INET, SOCK_STREAM, 0);
}
if (fd < 0) {
done = (*handler) (-errno, NULL, NULL);
assert(done);
return NULL;
}
rc = setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (char *)&one,
sizeof(one));
if (rc < 0)
do_log_error(L_WARN, errno, "Couldn't set SO_REUSEADDR");
if (inet6) {
rc = -1;
errno = EAFNOSUPPORT;
} else {
memset(&addr, 0, sizeof(addr));
rc = inet_aton(address, &addr.sin_addr);
if (rc != 1) {
done =
(*handler) (rc == 0 ? -ESYNTAX : -errno, NULL,
NULL);
assert(done);
return NULL;
}
addr.sin_family = AF_INET;
addr.sin_port = htons(port);
rc = bind(fd, (struct sockaddr *)&addr, sizeof(addr));
}
if (rc < 0) {
do_log_error(L_ERROR, errno, "Couldn't bind");
CLOSE(fd);
done = (*handler) (-errno, NULL, NULL);
assert(done);
return NULL;
}
rc = setNonblocking(fd, 1);
if (rc < 0) {
do_log_error(L_ERROR, errno, "Couldn't set non blocking mode");
CLOSE(fd);
done = (*handler) (-errno, NULL, NULL);
assert(done);
return NULL;
}
rc = listen(fd, 32);
if (rc < 0) {
do_log_error(L_ERROR, errno, "Couldn't listen");
CLOSE(fd);
done = (*handler) (-errno, NULL, NULL);
assert(done);
return NULL;
}
/* do_log(L_INFO, "Established listening socket on port %d.\n", port); */
return schedule_accept(fd, handler, data);
}
