diff options
Diffstat (limited to 'server/util.go')
-rw-r--r-- | server/util.go | 117 |
1 files changed, 0 insertions, 117 deletions
diff --git a/server/util.go b/server/util.go deleted file mode 100644 index b122fbdb..00000000 --- a/server/util.go +++ /dev/null @@ -1,117 +0,0 @@ -// Copyright (C) 2016 Nippon Telegraph and Telephone Corporation. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or -// implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -package server - -import ( - "net" - "os" - "strings" - "syscall" - - "github.com/eapache/channels" - - "github.com/osrg/gobgp/packet/bgp" -) - -func cleanInfiniteChannel(ch *channels.InfiniteChannel) { - ch.Close() - // drain all remaining items - for range ch.Out() { - } -} - -// Returns the binary formatted Administrative Shutdown Communication from the -// given string value. -func newAdministrativeCommunication(communication string) (data []byte) { - if communication == "" { - return nil - } - com := []byte(communication) - if len(com) > bgp.BGP_ERROR_ADMINISTRATIVE_COMMUNICATION_MAX { - data = []byte{bgp.BGP_ERROR_ADMINISTRATIVE_COMMUNICATION_MAX} - data = append(data, com[:bgp.BGP_ERROR_ADMINISTRATIVE_COMMUNICATION_MAX]...) - } else { - data = []byte{byte(len(com))} - data = append(data, com...) - } - return data -} - -// Parses the given NOTIFICATION message data as a binary value and returns -// the Administrative Shutdown Communication in string and the rest binary. -func decodeAdministrativeCommunication(data []byte) (string, []byte) { - if len(data) == 0 { - return "", data - } - communicationLen := int(data[0]) - if communicationLen > bgp.BGP_ERROR_ADMINISTRATIVE_COMMUNICATION_MAX { - communicationLen = bgp.BGP_ERROR_ADMINISTRATIVE_COMMUNICATION_MAX - } - if communicationLen > len(data)+1 { - communicationLen = len(data) + 1 - } - return string(data[1 : communicationLen+1]), data[communicationLen+1:] -} - -func extractFileAndFamilyFromTCPListener(l *net.TCPListener) (*os.File, int, error) { - // Note #1: TCPListener.File() has the unexpected side-effect of putting - // the original socket into blocking mode. See Note #2. - fi, err := l.File() - if err != nil { - return nil, 0, err - } - - // Note #2: Call net.FileListener() to put the original socket back into - // non-blocking mode. - fl, err := net.FileListener(fi) - if err != nil { - fi.Close() - return nil, 0, err - } - fl.Close() - - family := syscall.AF_INET - if strings.Contains(l.Addr().String(), "[") { - family = syscall.AF_INET6 - } - - return fi, family, nil -} - -func extractFileAndFamilyFromTCPConn(conn *net.TCPConn) (*os.File, int, error) { - // Note #1: TCPConn.File() has the unexpected side-effect of putting - // the original socket into blocking mode. See Note #2. - fi, err := conn.File() - if err != nil { - return nil, 0, err - } - - // Note #2: Call net.FileConn() to put the original socket back into - // non-blocking mode. - fc, err := net.FileConn(fi) - if err != nil { - fi.Close() - return nil, 0, err - } - fc.Close() - - family := syscall.AF_INET - if strings.Contains(conn.RemoteAddr().String(), "[") { - family = syscall.AF_INET6 - } - - return fi, family, nil -} |