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/*
* Copyright (C) Internet Systems Consortium, Inc. ("ISC")
*
* SPDX-License-Identifier: MPL-2.0
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, you can obtain one at https://mozilla.org/MPL/2.0/.
*
* See the COPYRIGHT file distributed with this work for additional
* information regarding copyright ownership.
*/
#include "uv-compat.h"
#include <unistd.h>
#include <isc/util.h>
#include "netmgr-int.h"
#if UV_VERSION_HEX < UV_VERSION(1, 27, 0)
int
isc_uv_udp_connect(uv_udp_t *handle, const struct sockaddr *addr) {
int err = 0;
do {
int addrlen = (addr->sa_family == AF_INET)
? sizeof(struct sockaddr_in)
: sizeof(struct sockaddr_in6);
#ifdef WIN32
err = connect(handle->socket, addr, addrlen);
#else /* WIN32 */
err = connect(handle->io_watcher.fd, addr, addrlen);
#endif /* WIN32 */
} while (err == -1 && errno == EINTR);
if (err) {
#ifdef WIN32
return (uv_translate_sys_error(err));
#else /* WIN32 */
#if UV_VERSION_HEX >= UV_VERSION(1, 10, 0)
return (uv_translate_sys_error(errno));
#else
return (-errno);
#endif /* UV_VERSION_HEX >= UV_VERSION(1, 10, 0) */
#endif /* WIN32 */
}
return (0);
}
#endif /* UV_VERSION_HEX < UV_VERSION(1, 27, 0) */
#if UV_VERSION_HEX < UV_VERSION(1, 32, 0)
int
uv_tcp_close_reset(uv_tcp_t *handle, uv_close_cb close_cb) {
if (setsockopt(handle->io_watcher.fd, SOL_SOCKET, SO_LINGER,
&(struct linger){ 1, 0 }, sizeof(struct linger)) == -1)
{
#if UV_VERSION_HEX >= UV_VERSION(1, 10, 0)
return (uv_translate_sys_error(errno));
#else
return (-errno);
#endif /* UV_VERSION_HEX >= UV_VERSION(1, 10, 0) */
}
uv_close((uv_handle_t *)handle, close_cb);
return (0);
}
#endif /* UV_VERSION_HEX < UV_VERSION(1, 32, 0) */
int
isc_uv_udp_freebind(uv_udp_t *handle, const struct sockaddr *addr,
unsigned int flags) {
int r;
uv_os_sock_t fd;
r = uv_fileno((const uv_handle_t *)handle, (uv_os_fd_t *)&fd);
if (r < 0) {
return (r);
}
#if defined(WIN32)
REQUIRE(fd != INVALID_SOCKET);
#endif
r = uv_udp_bind(handle, addr, flags);
if (r == UV_EADDRNOTAVAIL &&
isc__nm_socket_freebind(fd, addr->sa_family) == ISC_R_SUCCESS)
{
/*
* Retry binding with IP_FREEBIND (or equivalent option) if the
* address is not available. This helps with IPv6 tentative
* addresses which are reported by the route socket, although
* named is not yet able to properly bind to them.
*/
r = uv_udp_bind(handle, addr, flags);
}
return (r);
}
static int
isc__uv_tcp_bind_now(uv_tcp_t *handle, const struct sockaddr *addr,
unsigned int flags) {
int r;
struct sockaddr_storage sname;
int snamelen = sizeof(sname);
r = uv_tcp_bind(handle, addr, flags);
if (r < 0) {
return (r);
}
/*
* uv_tcp_bind() uses a delayed error, initially returning
* success even if bind() fails. By calling uv_tcp_getsockname()
* here we can find out whether the bind() call was successful.
*/
r = uv_tcp_getsockname(handle, (struct sockaddr *)&sname, &snamelen);
if (r < 0) {
return (r);
}
return (0);
}
int
isc_uv_tcp_freebind(uv_tcp_t *handle, const struct sockaddr *addr,
unsigned int flags) {
int r;
uv_os_sock_t fd;
r = uv_fileno((const uv_handle_t *)handle, (uv_os_fd_t *)&fd);
if (r < 0) {
return (r);
}
r = isc__uv_tcp_bind_now(handle, addr, flags);
if (r == UV_EADDRNOTAVAIL &&
isc__nm_socket_freebind(fd, addr->sa_family) == ISC_R_SUCCESS)
{
/*
* Retry binding with IP_FREEBIND (or equivalent option) if the
* address is not available. This helps with IPv6 tentative
* addresses which are reported by the route socket, although
* named is not yet able to properly bind to them.
*/
r = isc__uv_tcp_bind_now(handle, addr, flags);
}
return (r);
}
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