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-rw-r--r--lib/isc/netmgr/uv-compat.h126
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diff --git a/lib/isc/netmgr/uv-compat.h b/lib/isc/netmgr/uv-compat.h
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+++ b/lib/isc/netmgr/uv-compat.h
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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.
+ */
+
+#pragma once
+#include <uv.h>
+
+/*
+ * These functions were introduced in newer libuv, but we still
+ * want BIND9 compile on older ones so we emulate them.
+ * They're inline to avoid conflicts when running with a newer
+ * library version.
+ */
+
+#define UV_VERSION(major, minor, patch) ((major << 16) | (minor << 8) | (patch))
+
+/*
+ * Copied verbatim from libuv/src/version.c
+ */
+
+#define UV_STRINGIFY(v) UV_STRINGIFY_HELPER(v)
+#define UV_STRINGIFY_HELPER(v) #v
+
+#define UV_VERSION_STRING_BASE \
+ UV_STRINGIFY(UV_VERSION_MAJOR) \
+ "." UV_STRINGIFY(UV_VERSION_MINOR) "." UV_STRINGIFY(UV_VERSION_PATCH)
+
+#if UV_VERSION_IS_RELEASE
+#define UV_VERSION_STRING UV_VERSION_STRING_BASE
+#else
+#define UV_VERSION_STRING UV_VERSION_STRING_BASE "-" UV_VERSION_SUFFIX
+#endif
+
+#if !defined(UV__ERR)
+#define UV__ERR(x) (-(x))
+#endif
+
+#if UV_VERSION_HEX < UV_VERSION(1, 19, 0)
+static inline void *
+uv_handle_get_data(const uv_handle_t *handle) {
+ return (handle->data);
+}
+
+static inline void
+uv_handle_set_data(uv_handle_t *handle, void *data) {
+ handle->data = data;
+}
+
+static inline void *
+uv_req_get_data(const uv_req_t *req) {
+ return (req->data);
+}
+
+static inline void
+uv_req_set_data(uv_req_t *req, void *data) {
+ req->data = data;
+}
+#endif /* UV_VERSION_HEX < UV_VERSION(1, 19, 0) */
+
+#if UV_VERSION_HEX < UV_VERSION(1, 32, 0)
+int
+uv_tcp_close_reset(uv_tcp_t *handle, uv_close_cb close_cb);
+#endif
+
+#if UV_VERSION_HEX < UV_VERSION(1, 34, 0)
+#define uv_sleep(msec) usleep(msec * 1000)
+#endif /* UV_VERSION_HEX < UV_VERSION(1, 34, 0) */
+
+#if UV_VERSION_HEX < UV_VERSION(1, 27, 0)
+int
+isc_uv_udp_connect(uv_udp_t *handle, const struct sockaddr *addr);
+/*%<
+ * Associate the UDP handle to a remote address and port, so every message sent
+ * by this handle is automatically sent to that destination.
+ *
+ * NOTE: This is just a limited shim for uv_udp_connect() as it requires the
+ * handle to be bound.
+ */
+#else /* UV_VERSION_HEX < UV_VERSION(1, 27, 0) */
+#define isc_uv_udp_connect uv_udp_connect
+#endif /* UV_VERSION_HEX < UV_VERSION(1, 27, 0) */
+
+#if UV_VERSION_HEX < UV_VERSION(1, 12, 0)
+#include <stdlib.h>
+#include <string.h>
+
+static inline int
+uv_os_getenv(const char *name, char *buffer, size_t *size) {
+ size_t len;
+ char *buf = getenv(name);
+
+ if (buf == NULL) {
+ return (UV_ENOENT);
+ }
+
+ len = strlen(buf) + 1;
+ if (len > *size) {
+ *size = len;
+ return (UV_ENOBUFS);
+ }
+
+ *size = len;
+ memmove(buffer, buf, len);
+
+ return (0);
+}
+
+#define uv_os_setenv(name, value) setenv(name, value, 0)
+#endif /* UV_VERSION_HEX < UV_VERSION(1, 12, 0) */
+
+int
+isc_uv_udp_freebind(uv_udp_t *handle, const struct sockaddr *addr,
+ unsigned int flags);
+
+int
+isc_uv_tcp_freebind(uv_tcp_t *handle, const struct sockaddr *addr,
+ unsigned int flags);