mirror of
https://github.com/osrg/gobgp.git
synced 2024-05-11 05:55:10 +00:00
c593d7c8b3
seems that sticking to Go API v1 for protobuf is headache for projects using GoBGP. This breaks the compatibility so bumps up the major version to 3. Signed-off-by: FUJITA Tomonori <fujita.tomonori@gmail.com>
109 lines
2.9 KiB
Go
109 lines
2.9 KiB
Go
// Copyright (C) 2016 Nippon Telegraph and Telephone Corporation.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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// implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package server
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import (
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"net"
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"strings"
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"syscall"
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"github.com/eapache/channels"
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"github.com/osrg/gobgp/v3/pkg/packet/bgp"
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)
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func cleanInfiniteChannel(ch *channels.InfiniteChannel) {
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ch.Close()
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// drain all remaining items
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for range ch.Out() {
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}
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}
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// Returns the binary formatted Administrative Shutdown Communication from the
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// given string value.
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func newAdministrativeCommunication(communication string) (data []byte) {
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if communication == "" {
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return nil
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}
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com := []byte(communication)
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if len(com) > bgp.BGP_ERROR_ADMINISTRATIVE_COMMUNICATION_MAX {
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data = []byte{bgp.BGP_ERROR_ADMINISTRATIVE_COMMUNICATION_MAX}
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data = append(data, com[:bgp.BGP_ERROR_ADMINISTRATIVE_COMMUNICATION_MAX]...)
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} else {
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data = []byte{byte(len(com))}
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data = append(data, com...)
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}
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return data
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}
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// Parses the given NOTIFICATION message data as a binary value and returns
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// the Administrative Shutdown Communication in string and the rest binary.
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func decodeAdministrativeCommunication(data []byte) (string, []byte) {
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if len(data) == 0 {
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return "", data
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}
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communicationLen := int(data[0])
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if communicationLen > bgp.BGP_ERROR_ADMINISTRATIVE_COMMUNICATION_MAX {
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communicationLen = bgp.BGP_ERROR_ADMINISTRATIVE_COMMUNICATION_MAX
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}
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if communicationLen > len(data)-1 {
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communicationLen = len(data) - 1
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}
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return string(data[1 : communicationLen+1]), data[communicationLen+1:]
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}
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func extractFamilyFromTCPConn(conn *net.TCPConn) int {
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family := syscall.AF_INET
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if strings.Contains(conn.RemoteAddr().String(), "[") {
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family = syscall.AF_INET6
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}
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return family
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}
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func setsockOptString(sc syscall.RawConn, level int, opt int, str string) error {
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var opterr error
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fn := func(s uintptr) {
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opterr = syscall.SetsockoptString(int(s), level, opt, str)
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}
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err := sc.Control(fn)
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if opterr == nil {
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return err
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}
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return opterr
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}
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func setsockOptInt(sc syscall.RawConn, level, name, value int) error {
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var opterr error
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fn := func(s uintptr) {
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opterr = syscall.SetsockoptInt(int(s), level, name, value)
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}
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err := sc.Control(fn)
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if opterr == nil {
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return err
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}
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return opterr
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}
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func setsockoptIpTtl(sc syscall.RawConn, family int, value int) error {
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level := syscall.IPPROTO_IP
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name := syscall.IP_TTL
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if family == syscall.AF_INET6 {
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level = syscall.IPPROTO_IPV6
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name = syscall.IPV6_UNICAST_HOPS
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}
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return setsockOptInt(sc, level, name, value)
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}
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