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junos.go
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junos.go
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// Package junos provides automation for Junos (Juniper Networks) devices, as
// well as interaction with Junos Space.
package junos
import (
"encoding/xml"
"errors"
"fmt"
"github.com/scottdware/go-netconf/netconf"
"io/ioutil"
"log"
"regexp"
"strings"
)
// All of our RPC calls we use.
var (
rpcCommand = "<command format=\"text\">%s</command>"
rpcCommandXML = "<command format=\"xml\">%s</command>"
rpcCommit = "<commit-configuration/>"
rpcCommitAt = "<commit-configuration><at-time>%s</at-time></commit-configuration>"
rpcCommitCheck = "<commit-configuration><check/></commit-configuration>"
rpcCommitConfirm = "<commit-configuration><confirmed/><confirm-timeout>%d</confirm-timeout></commit-configuration>"
rpcFactsRE = "<get-route-engine-information/>"
rpcFactsChassis = "<get-chassis-inventory/>"
rpcConfigFileSet = "<load-configuration action=\"set\" format=\"text\"><configuration-set>%s</configuration-set></load-configuration>"
rpcConfigFileText = "<load-configuration format=\"text\"><configuration-text>%s</configuration-text></load-configuration>"
rpcConfigFileXML = "<load-configuration format=\"xml\"><configuration>%s</configuration></load-configuration>"
rpcConfigURLSet = "<load-configuration action=\"set\" format=\"text\" url=\"%s\"/>"
rpcConfigURLText = "<load-configuration format=\"text\" url=\"%s\"/>"
rpcConfigURLXML = "<load-configuration format=\"xml\" url=\"%s\"/>"
rpcConfigStringSet = "<load-configuration action=\"set\" format=\"text\"><configuration-set>%s</configuration-set></load-configuration>"
rpcConfigStringText = "<load-configuration format=\"text\"><configuration-text>%s</configuration-text></load-configuration>"
rpcConfigStringXML = "<load-configuration format=\"xml\"><configuration>%s</configuration></load-configuration>"
rpcGetRescue = "<get-rescue-information><format>text</format></get-rescue-information>"
rpcGetRollback = "<get-rollback-information><rollback>%d</rollback><format>text</format></get-rollback-information>"
rpcGetRollbackCompare = "<get-rollback-information><rollback>0</rollback><compare>%d</compare><format>text</format></get-rollback-information>"
rpcHardware = "<get-chassis-inventory/>"
rpcLock = "<lock><target><candidate/></target></lock>"
rpcRescueConfig = "<load-configuration rescue=\"rescue\"/>"
rpcRescueDelete = "<request-delete-rescue-configuration/>"
rpcRescueSave = "<request-save-rescue-configuration/>"
rpcRollbackConfig = "<load-configuration rollback=\"%d\"/>"
rpcRoute = "<get-route-engine-information/>"
rpcSoftware = "<get-software-information/>"
rpcUnlock = "<unlock><target><candidate/></target></unlock>"
rpcVersion = "<get-software-information/>"
rpcReboot = "<request-reboot/>"
rpcCommitHistory = "<get-commit-information/>"
)
// Junos contains our session state.
type Junos struct {
Session *netconf.Session
Hostname string
RoutingEngines int
Platform []RoutingEngine
}
// CommitHistory holds all of the commit entries.
type CommitHistory struct {
Entries []CommitEntry `xml:"commit-history"`
}
// CommitEntry holds information about each prevous commit.
type CommitEntry struct {
Sequence int `xml:"sequence-number"`
User string `xml:"user"`
Method string `xml:"client"`
Timestamp string `xml:"date-time"`
}
// RoutingEngine contains the hardware and software information for each route engine.
type RoutingEngine struct {
Model string
Version string
}
type commandXML struct {
Config string `xml:",innerxml"`
}
type commitError struct {
Path string `xml:"error-path"`
Element string `xml:"error-info>bad-element"`
Message string `xml:"error-message"`
}
type commitResults struct {
XMLName xml.Name `xml:"commit-results"`
Errors []commitError `xml:"rpc-error"`
}
type diffXML struct {
XMLName xml.Name `xml:"rollback-information"`
Config string `xml:"configuration-information>configuration-output"`
}
type hardwareRouteEngines struct {
XMLName xml.Name `xml:"multi-routing-engine-results"`
RE []hardwareRouteEngine `xml:"multi-routing-engine-item>chassis-inventory"`
}
type hardwareRouteEngine struct {
XMLName xml.Name `xml:"chassis-inventory"`
Serial string `xml:"chassis>serial-number"`
Description string `xml:"chassis>description"`
}
type versionRouteEngines struct {
XMLName xml.Name `xml:"multi-routing-engine-results"`
RE []versionRouteEngine `xml:"multi-routing-engine-item>software-information"`
}
type versionRouteEngine struct {
XMLName xml.Name `xml:"software-information"`
Hostname string `xml:"host-name"`
Platform string `xml:"product-model"`
PackageInfo []versionPackageInfo `xml:"package-information"`
}
type versionPackageInfo struct {
XMLName xml.Name `xml:"package-information"`
PackageName []string `xml:"name"`
SoftwareVersion []string `xml:"comment"`
}
// Close disconnects our session to the device.
func (j *Junos) Close() {
j.Session.Transport.Close()
}
// RunCommand executes any operational mode command, such as "show" or "request."
// Format can be one of "text" or "xml."
func (j *Junos) RunCommand(cmd, format string) (string, error) {
var command string
command = fmt.Sprintf(rpcCommand, cmd)
errMessage := "No output available. Please check the syntax of your command."
if format == "xml" {
command = fmt.Sprintf(rpcCommandXML, cmd)
}
reply, err := j.Session.Exec(netconf.RawRPC(command))
if err != nil {
return errMessage, err
}
if reply.Errors != nil {
for _, m := range reply.Errors {
return errMessage, errors.New(m.Message)
}
}
if reply.Data == "" {
return errMessage, nil
}
if format == "text" {
var output commandXML
err = xml.Unmarshal([]byte(reply.Data), &output)
if err != nil {
return "", err
}
return output.Config, nil
}
return reply.Data, nil
}
// CommitHistory gathers all the information about previous commits.
func (j *Junos) CommitHistory() (*CommitHistory, error) {
var history CommitHistory
reply, err := j.Session.Exec(netconf.RawRPC(rpcCommitHistory))
if err != nil {
return nil, err
}
if reply.Errors != nil {
for _, m := range reply.Errors {
return nil, errors.New(m.Message)
}
}
if reply.Data == "" {
return nil, errors.New("could not load commit history")
}
err = xml.Unmarshal([]byte(reply.Data), &history)
if err != nil {
return nil, err
}
return &history, nil
}
// Commit commits the configuration.
func (j *Junos) Commit() error {
var errs commitResults
reply, err := j.Session.Exec(netconf.RawRPC(rpcCommit))
if err != nil {
return err
}
if reply.Errors != nil {
for _, m := range reply.Errors {
return errors.New(m.Message)
}
}
err = xml.Unmarshal([]byte(reply.Data), &errs)
if err != nil {
return err
}
if errs.Errors != nil {
for _, m := range errs.Errors {
message := fmt.Sprintf("[%s]\n %s\nError: %s", strings.Trim(m.Path, "[\r\n]"), strings.Trim(m.Element, "[\r\n]"), strings.Trim(m.Message, "[\r\n]"))
return errors.New(message)
}
}
return nil
}
// CommitAt commits the configuration at the specified <time>.
func (j *Junos) CommitAt(time string) error {
var errs commitResults
command := fmt.Sprintf(rpcCommitAt, time)
reply, err := j.Session.Exec(netconf.RawRPC(command))
if err != nil {
return err
}
if reply.Errors != nil {
for _, m := range reply.Errors {
return errors.New(m.Message)
}
}
err = xml.Unmarshal([]byte(reply.Data), &errs)
if err != nil {
return err
}
if errs.Errors != nil {
for _, m := range errs.Errors {
message := fmt.Sprintf("[%s]\n %s\nError: %s", strings.Trim(m.Path, "[\r\n]"), strings.Trim(m.Element, "[\r\n]"), strings.Trim(m.Message, "[\r\n]"))
return errors.New(message)
}
}
return nil
}
// CommitCheck checks the configuration for syntax errors.
func (j *Junos) CommitCheck() error {
var errs commitResults
reply, err := j.Session.Exec(netconf.RawRPC(rpcCommitCheck))
if err != nil {
return err
}
if reply.Errors != nil {
for _, m := range reply.Errors {
return errors.New(m.Message)
}
}
err = xml.Unmarshal([]byte(reply.Data), &errs)
if err != nil {
return err
}
if errs.Errors != nil {
for _, m := range errs.Errors {
message := fmt.Sprintf("[%s]\n %s\nError: %s", strings.Trim(m.Path, "[\r\n]"), strings.Trim(m.Element, "[\r\n]"), strings.Trim(m.Message, "[\r\n]"))
return errors.New(message)
}
}
return nil
}
// CommitConfirm rolls back the configuration after <delay> minutes.
func (j *Junos) CommitConfirm(delay int) error {
var errs commitResults
command := fmt.Sprintf(rpcCommitConfirm, delay)
reply, err := j.Session.Exec(netconf.RawRPC(command))
if err != nil {
return err
}
if reply.Errors != nil {
for _, m := range reply.Errors {
return errors.New(m.Message)
}
}
err = xml.Unmarshal([]byte(reply.Data), &errs)
if err != nil {
return err
}
if errs.Errors != nil {
for _, m := range errs.Errors {
message := fmt.Sprintf("[%s]\n %s\nError: %s", strings.Trim(m.Path, "[\r\n]"), strings.Trim(m.Element, "[\r\n]"), strings.Trim(m.Message, "[\r\n]"))
return errors.New(message)
}
}
return nil
}
// ConfigDiff compares the current active configuration to a given rollback configuration.
func (j *Junos) ConfigDiff(compare int) (string, error) {
var rb diffXML
command := fmt.Sprintf(rpcGetRollbackCompare, compare)
reply, err := j.Session.Exec(netconf.RawRPC(command))
if err != nil {
return "", err
}
if reply.Errors != nil {
for _, m := range reply.Errors {
return "", errors.New(m.Message)
}
}
err = xml.Unmarshal([]byte(reply.Data), &rb)
if err != nil {
return "", err
}
return rb.Config, nil
}
// PrintFacts prints information about the device, such as model and software.
func (j *Junos) PrintFacts() {
var str string
fpcRegex := regexp.MustCompile(`^(EX).*`)
srxRegex := regexp.MustCompile(`^(SRX).*`)
mRegex := regexp.MustCompile(`^(M[X]?).*`)
str += fmt.Sprintf("Routing Engines/FPC's: %d\n\n", j.RoutingEngines)
for i, p := range j.Platform {
model := p.Model
version := p.Version
switch model {
case fpcRegex.FindString(model):
str += fmt.Sprintf("fpc%d\n--------------------------------------------------------------------------\n", i)
str += fmt.Sprintf("Hostname: %s\nModel: %s\nVersion: %s\n\n", j.Hostname, model, version)
case srxRegex.FindString(model):
str += fmt.Sprintf("node%d\n--------------------------------------------------------------------------\n", i)
str += fmt.Sprintf("Hostname: %s\nModel: %s\nVersion: %s\n\n", j.Hostname, model, version)
case mRegex.FindString(model):
str += fmt.Sprintf("re%d\n--------------------------------------------------------------------------\n", i)
str += fmt.Sprintf("Hostname: %s\nModel: %s\nVersion: %s\n\n", j.Hostname, model, version)
}
}
fmt.Println(str)
}
// GetConfig returns the full configuration, or configuration starting at <section>.
// Format can be one of "text" or "xml." You can do sub-sections by separating the
// <section> path with a ">" symbol, i.e. "system>login"
func (j *Junos) GetConfig(section, format string) (string, error) {
secs := strings.Split(section, ">")
nSecs := len(secs) - 1
command := fmt.Sprintf("<get-configuration format=\"%s\"><configuration>", format)
if section == "full" {
command += "</configuration></get-configuration>"
}
if nSecs >= 0 {
for i := 0; i < nSecs; i++ {
command += fmt.Sprintf("<%s>", secs[i])
}
command += fmt.Sprintf("<%s/>", secs[nSecs])
for j := nSecs - 1; j >= 0; j-- {
command += fmt.Sprintf("</%s>", secs[j])
}
command += fmt.Sprint("</configuration></get-configuration>")
}
reply, err := j.Session.Exec(netconf.RawRPC(command))
if err != nil {
return "", err
}
if reply.Errors != nil {
for _, m := range reply.Errors {
return "", errors.New(m.Message)
}
}
if format == "text" {
var output commandXML
err = xml.Unmarshal([]byte(reply.Data), &output)
if err != nil {
return "", err
}
return output.Config, nil
}
return reply.Data, nil
}
// Config loads a given configuration file from your local machine,
// a remote (FTP or HTTP server) location, or via configuration statements
// from variables (type string or []string) within your script. Format can be one of
// "set" "text" or "xml."
func (j *Junos) Config(path interface{}, format string, commit bool) error {
var command string
switch format {
case "set":
switch path.(type) {
case string:
if strings.Contains(path.(string), "tp://") {
command = fmt.Sprintf(rpcConfigURLSet, path.(string))
}
if _, err := ioutil.ReadFile(path.(string)); err != nil {
command = fmt.Sprintf(rpcConfigStringSet, path.(string))
} else {
data, err := ioutil.ReadFile(path.(string))
if err != nil {
return err
}
command = fmt.Sprintf(rpcConfigFileSet, string(data))
}
case []string:
command = fmt.Sprintf(rpcConfigStringSet, strings.Join(path.([]string), "\n"))
}
case "text":
switch path.(type) {
case string:
if strings.Contains(path.(string), "tp://") {
command = fmt.Sprintf(rpcConfigURLText, path.(string))
}
if _, err := ioutil.ReadFile(path.(string)); err != nil {
command = fmt.Sprintf(rpcConfigStringText, path.(string))
} else {
data, err := ioutil.ReadFile(path.(string))
if err != nil {
return err
}
command = fmt.Sprintf(rpcConfigFileText, string(data))
}
case []string:
command = fmt.Sprintf(rpcConfigStringText, strings.Join(path.([]string), "\n"))
}
case "xml":
switch path.(type) {
case string:
if strings.Contains(path.(string), "tp://") {
command = fmt.Sprintf(rpcConfigURLXML, path.(string))
}
if _, err := ioutil.ReadFile(path.(string)); err != nil {
command = fmt.Sprintf(rpcConfigStringXML, path.(string))
} else {
data, err := ioutil.ReadFile(path.(string))
if err != nil {
return err
}
command = fmt.Sprintf(rpcConfigFileXML, string(data))
}
case []string:
command = fmt.Sprintf(rpcConfigStringXML, strings.Join(path.([]string), "\n"))
}
}
reply, err := j.Session.Exec(netconf.RawRPC(command))
if err != nil {
return err
}
if commit {
err = j.Commit()
if err != nil {
return err
}
}
if reply.Errors != nil {
for _, m := range reply.Errors {
return errors.New(m.Message)
}
}
return nil
}
// Lock locks the candidate configuration.
func (j *Junos) Lock() error {
reply, err := j.Session.Exec(netconf.RawRPC(rpcLock))
if err != nil {
return err
}
if reply.Errors != nil {
for _, m := range reply.Errors {
return errors.New(m.Message)
}
}
return nil
}
// NewSession establishes a new connection to a Junos device that we will use
// to run our commands against. NewSession also gathers software information
// about the device.
func NewSession(host, user, password string) (*Junos, error) {
rex := regexp.MustCompile(`^.*\[(.*)\]`)
s, err := netconf.DialSSH(host, netconf.SSHConfigPassword(user, password))
if err != nil {
log.Fatal(err)
}
reply, err := s.Exec(netconf.RawRPC(rpcVersion))
if err != nil {
return nil, err
}
if reply.Errors != nil {
for _, m := range reply.Errors {
return nil, errors.New(m.Message)
}
}
if strings.Contains(reply.Data, "multi-routing-engine-results") {
var facts versionRouteEngines
err = xml.Unmarshal([]byte(reply.Data), &facts)
if err != nil {
return nil, err
}
numRE := len(facts.RE)
hostname := facts.RE[0].Hostname
res := make([]RoutingEngine, 0, numRE)
for i := 0; i < numRE; i++ {
version := rex.FindStringSubmatch(facts.RE[i].PackageInfo[0].SoftwareVersion[0])
model := strings.ToUpper(facts.RE[i].Platform)
res = append(res, RoutingEngine{Model: model, Version: version[1]})
}
return &Junos{
Session: s,
Hostname: hostname,
RoutingEngines: numRE,
Platform: res,
}, nil
}
var facts versionRouteEngine
err = xml.Unmarshal([]byte(reply.Data), &facts)
if err != nil {
return nil, err
}
res := make([]RoutingEngine, 0)
hostname := facts.Hostname
version := rex.FindStringSubmatch(facts.PackageInfo[0].SoftwareVersion[0])
model := strings.ToUpper(facts.Platform)
res = append(res, RoutingEngine{Model: model, Version: version[1]})
return &Junos{
Session: s,
Hostname: hostname,
RoutingEngines: 1,
Platform: res,
}, nil
}
// Rescue will create or delete the rescue configuration given "save" or "delete."
func (j *Junos) Rescue(action string) error {
command := fmt.Sprintf(rpcRescueSave)
if action == "delete" {
command = fmt.Sprintf(rpcRescueDelete)
}
reply, err := j.Session.Exec(netconf.RawRPC(command))
if err != nil {
return err
}
if reply.Errors != nil {
for _, m := range reply.Errors {
return errors.New(m.Message)
}
}
return nil
}
// RollbackConfig loads and commits the configuration of a given rollback or rescue state.
func (j *Junos) RollbackConfig(option interface{}) error {
var command = fmt.Sprintf(rpcRollbackConfig, option)
if option == "rescue" {
command = fmt.Sprintf(rpcRescueConfig)
}
reply, err := j.Session.Exec(netconf.RawRPC(command))
if err != nil {
return err
}
err = j.Commit()
if err != nil {
return err
}
if reply.Errors != nil {
for _, m := range reply.Errors {
return errors.New(m.Message)
}
}
return nil
}
// Unlock unlocks the candidate configuration.
func (j *Junos) Unlock() error {
reply, err := j.Session.Exec(netconf.RawRPC(rpcUnlock))
if err != nil {
return err
}
if reply.Errors != nil {
for _, m := range reply.Errors {
return errors.New(m.Message)
}
}
return nil
}
// Reboot will reboot the device.
func (j *Junos) Reboot() error {
reply, err := j.Session.Exec(netconf.RawRPC(rpcReboot))
if err != nil {
return err
}
if reply.Errors != nil {
for _, m := range reply.Errors {
return errors.New(m.Message)
}
}
return nil
}