Update protobuf,grpc,etcd dependencies
1. Updated etcd/protobuf/grpc dependencies: echo " hack/pin-dependency.sh github.com/golang/protobuf latest hack/pin-dependency.sh google.golang.org/protobuf latest hack/pin-dependency.sh go.etcd.io/etcd/api/v3 v3.5.0-rc.0 hack/pin-dependency.sh go.etcd.io/etcd/client/v3 v3.5.0-rc.0 hack/pin-dependency.sh go.etcd.io/etcd/client/pkg/v3 v3.5.0-rc.0 hack/pin-dependency.sh go.etcd.io/etcd/pkg/v3 v3.5.0-rc.0 hack/pin-dependency.sh go.etcd.io/etcd/server/v3 v3.5.0-rc.0 hack/pin-dependency.sh go.etcd.io/etcd/tests/v3 v3.5.0-rc.0 hack/pin-dependency.sh google.golang.org/grpc latest " | bash 2. Linted transitive dependencies until versions are clean: hack/lint-dependencies.sh | grep " hack/pin-dependency.sh" | bash 3. Linted dependencies until dropped versions are clean: hack/lint-dependencies.sh | grep "dropreplace" | bash 4. Updated vendor and internal modules: hack/update-vendor.sh hack/update-internal-modules.sh Repeated steps 2-4 until clean
This commit is contained in:
Jordan Liggitt
251
vendor/go.etcd.io/etcd/pkg/v3/netutil/routes_linux.go
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vendored
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251
vendor/go.etcd.io/etcd/pkg/v3/netutil/routes_linux.go
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@@ -0,0 +1,251 @@
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// Copyright 2016 The etcd Authors
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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 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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//go:build linux
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// +build linux
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package netutil
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import (
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"bytes"
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"encoding/binary"
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"fmt"
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"net"
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"sort"
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"syscall"
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"go.etcd.io/etcd/pkg/v3/cpuutil"
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)
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var errNoDefaultRoute = fmt.Errorf("could not find default route")
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var errNoDefaultHost = fmt.Errorf("could not find default host")
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var errNoDefaultInterface = fmt.Errorf("could not find default interface")
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// GetDefaultHost obtains the first IP address of machine from the routing table and returns the IP address as string.
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// An IPv4 address is preferred to an IPv6 address for backward compatibility.
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func GetDefaultHost() (string, error) {
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rmsgs, rerr := getDefaultRoutes()
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if rerr != nil {
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return "", rerr
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}
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// prioritize IPv4
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if rmsg, ok := rmsgs[syscall.AF_INET]; ok {
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if host, err := chooseHost(syscall.AF_INET, rmsg); host != "" || err != nil {
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return host, err
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}
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delete(rmsgs, syscall.AF_INET)
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}
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// sort so choice is deterministic
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var families []int
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for family := range rmsgs {
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families = append(families, int(family))
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}
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sort.Ints(families)
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for _, f := range families {
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family := uint8(f)
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if host, err := chooseHost(family, rmsgs[family]); host != "" || err != nil {
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return host, err
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}
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}
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return "", errNoDefaultHost
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}
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func chooseHost(family uint8, rmsg *syscall.NetlinkMessage) (string, error) {
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host, oif, err := parsePREFSRC(rmsg)
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if host != "" || err != nil {
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return host, err
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}
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// prefsrc not detected, fall back to getting address from iface
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ifmsg, ierr := getIfaceAddr(oif, family)
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if ierr != nil {
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return "", ierr
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}
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attrs, aerr := syscall.ParseNetlinkRouteAttr(ifmsg)
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if aerr != nil {
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return "", aerr
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}
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for _, attr := range attrs {
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// search for RTA_DST because ipv6 doesn't have RTA_SRC
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if attr.Attr.Type == syscall.RTA_DST {
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return net.IP(attr.Value).String(), nil
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}
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}
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return "", nil
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}
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func getDefaultRoutes() (map[uint8]*syscall.NetlinkMessage, error) {
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dat, err := syscall.NetlinkRIB(syscall.RTM_GETROUTE, syscall.AF_UNSPEC)
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if err != nil {
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return nil, err
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}
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msgs, msgErr := syscall.ParseNetlinkMessage(dat)
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if msgErr != nil {
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return nil, msgErr
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}
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routes := make(map[uint8]*syscall.NetlinkMessage)
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rtmsg := syscall.RtMsg{}
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for _, m := range msgs {
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if m.Header.Type != syscall.RTM_NEWROUTE {
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continue
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}
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buf := bytes.NewBuffer(m.Data[:syscall.SizeofRtMsg])
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if rerr := binary.Read(buf, cpuutil.ByteOrder(), &rtmsg); rerr != nil {
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continue
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}
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if rtmsg.Dst_len == 0 && rtmsg.Table == syscall.RT_TABLE_MAIN {
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// zero-length Dst_len implies default route
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msg := m
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routes[rtmsg.Family] = &msg
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}
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}
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if len(routes) > 0 {
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return routes, nil
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}
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return nil, errNoDefaultRoute
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}
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// Used to get an address of interface.
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func getIfaceAddr(idx uint32, family uint8) (*syscall.NetlinkMessage, error) {
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dat, err := syscall.NetlinkRIB(syscall.RTM_GETADDR, int(family))
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if err != nil {
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return nil, err
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}
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msgs, msgErr := syscall.ParseNetlinkMessage(dat)
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if msgErr != nil {
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return nil, msgErr
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}
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ifaddrmsg := syscall.IfAddrmsg{}
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for _, m := range msgs {
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if m.Header.Type != syscall.RTM_NEWADDR {
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continue
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}
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buf := bytes.NewBuffer(m.Data[:syscall.SizeofIfAddrmsg])
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if rerr := binary.Read(buf, cpuutil.ByteOrder(), &ifaddrmsg); rerr != nil {
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continue
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}
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if ifaddrmsg.Index == idx {
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return &m, nil
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}
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}
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return nil, fmt.Errorf("could not find address for interface index %v", idx)
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}
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// Used to get a name of interface.
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func getIfaceLink(idx uint32) (*syscall.NetlinkMessage, error) {
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dat, err := syscall.NetlinkRIB(syscall.RTM_GETLINK, syscall.AF_UNSPEC)
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if err != nil {
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return nil, err
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}
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msgs, msgErr := syscall.ParseNetlinkMessage(dat)
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if msgErr != nil {
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return nil, msgErr
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}
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ifinfomsg := syscall.IfInfomsg{}
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for _, m := range msgs {
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if m.Header.Type != syscall.RTM_NEWLINK {
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continue
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}
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buf := bytes.NewBuffer(m.Data[:syscall.SizeofIfInfomsg])
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if rerr := binary.Read(buf, cpuutil.ByteOrder(), &ifinfomsg); rerr != nil {
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continue
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}
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if ifinfomsg.Index == int32(idx) {
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return &m, nil
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}
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}
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return nil, fmt.Errorf("could not find link for interface index %v", idx)
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}
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// GetDefaultInterfaces gets names of interfaces and returns a map[interface]families.
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func GetDefaultInterfaces() (map[string]uint8, error) {
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interfaces := make(map[string]uint8)
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rmsgs, rerr := getDefaultRoutes()
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if rerr != nil {
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return interfaces, rerr
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}
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for family, rmsg := range rmsgs {
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_, oif, err := parsePREFSRC(rmsg)
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if err != nil {
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return interfaces, err
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}
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ifmsg, ierr := getIfaceLink(oif)
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if ierr != nil {
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return interfaces, ierr
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}
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attrs, aerr := syscall.ParseNetlinkRouteAttr(ifmsg)
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if aerr != nil {
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return interfaces, aerr
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}
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for _, attr := range attrs {
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if attr.Attr.Type == syscall.IFLA_IFNAME {
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// key is an interface name
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// possible values: 2 - AF_INET, 10 - AF_INET6, 12 - dualstack
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interfaces[string(attr.Value[:len(attr.Value)-1])] += family
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}
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}
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}
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if len(interfaces) > 0 {
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return interfaces, nil
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}
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return interfaces, errNoDefaultInterface
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}
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// parsePREFSRC returns preferred source address and output interface index (RTA_OIF).
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func parsePREFSRC(m *syscall.NetlinkMessage) (host string, oif uint32, err error) {
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var attrs []syscall.NetlinkRouteAttr
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attrs, err = syscall.ParseNetlinkRouteAttr(m)
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if err != nil {
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return "", 0, err
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}
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for _, attr := range attrs {
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if attr.Attr.Type == syscall.RTA_PREFSRC {
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host = net.IP(attr.Value).String()
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}
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if attr.Attr.Type == syscall.RTA_OIF {
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oif = cpuutil.ByteOrder().Uint32(attr.Value)
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}
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if host != "" && oif != uint32(0) {
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break
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}
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}
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if oif == 0 {
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err = errNoDefaultRoute
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}
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return host, oif, err
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}
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