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poe_status.go
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poe_status.go
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package main
import (
"errors"
"fmt"
"github.com/PuerkitoBio/goquery"
"io"
"strconv"
"strings"
)
type PoePortStatus struct {
PortIndex int8
PortName string
PoePowerClass string
PoePortStatus string
ErrorStatus string
VoltageInVolt int32
CurrentInMilliAmps int32
PowerInWatt float32
TemperatureInCelsius int32
}
type PoeCommand struct {
PoeStatusCommand PoeStatusCommand `cmd:"" name:"status" help:"show current PoE status for all ports" default:"1"`
PoeShowSettingsCommand PoeShowSettingsCommand `cmd:"" name:"settings" help:"show current PoE settings for all ports"`
PoeSetPowerCommand PoeSetPowerCommand `cmd:"" name:"set" help:"set new PoE settings per each PORT number"`
PoeCyclePowerCommand PoeCyclePowerCommand `cmd:"" name:"cycle" help:"power cycle one or more PoE ports"`
}
type PoeStatusCommand struct {
Address string `required:"" help:"the Netgear switch's IP address or host name to connect to" short:"a"`
}
func (poe *PoeStatusCommand) Run(args *GlobalOptions) error {
statusPage, err := requestPoePortStatusPage(args, poe.Address)
if err != nil {
return err
}
if checkIsLoginRequired(statusPage) {
return errors.New("no content. please, (re-)login first")
}
var statuses []PoePortStatus
statuses, err = findPortStatusInHtml(args.model, strings.NewReader(statusPage))
if err != nil {
return err
}
prettyPrintStatus(args.OutputFormat, statuses)
return nil
}
func prettyPrintStatus(format OutputFormat, statuses []PoePortStatus) {
var header = []string{"Port ID", "Port Name", "Status", "PortPwr class", "Voltage (V)", "Current (mA)", "PortPwr (W)", "Temp. (°C)", "Error status"}
var content [][]string
for _, status := range statuses {
var row []string
row = append(row, fmt.Sprintf("%d", status.PortIndex))
row = append(row, status.PortName)
row = append(row, status.PoePortStatus)
row = append(row, status.PoePowerClass)
row = append(row, fmt.Sprintf("%d", status.VoltageInVolt))
row = append(row, fmt.Sprintf("%d", status.CurrentInMilliAmps))
row = append(row, fmt.Sprintf("%.2f", status.PowerInWatt))
row = append(row, fmt.Sprintf("%d", status.TemperatureInCelsius))
row = append(row, status.ErrorStatus)
content = append(content, row)
}
switch format {
case MarkdownFormat:
printMarkdownTable(header, content)
case JsonFormat:
printJsonDataTable("poe_status", header, content)
default:
panic("not implemented format: " + format)
}
}
func requestPoePortStatusPage(args *GlobalOptions, host string) (string, error) {
model, _, err := readTokenAndModel2GlobalOptions(args, host)
if err != nil {
return "", err
}
if isModel30x(model) {
url := fmt.Sprintf("http://%s/getPoePortStatus.cgi", host)
return requestPage(args, host, url)
}
if isModel316(model) {
url := fmt.Sprintf("http://%s/iss/specific/poePortStatus.html?GetData=TRUE", host)
return requestPage(args, host, url)
}
panic("model not supported")
}
func findPortStatusInHtml(model NetgearModel, reader io.Reader) ([]PoePortStatus, error) {
if isModel30x(model) {
return findPortStatusInGs30xEPxHtml(reader)
}
if isModel316(model) {
return findPortStatusInGs316EPxHtml(reader)
}
panic("model not supported")
}
func findPortStatusInGs30xEPxHtml(reader io.Reader) ([]PoePortStatus, error) {
doc, err := goquery.NewDocumentFromReader(reader)
if err != nil {
return nil, err
}
var statuses []PoePortStatus
doc.Find("li.poePortStatusListItem").Each(func(i int, s *goquery.Selection) {
stat := PoePortStatus{}
id, _ := s.Find("input[type=hidden].port").Attr("value")
var id64, _ = strconv.ParseInt(id, 10, 8)
stat.PortIndex = int8(id64)
portData := s.Find("span.poe-port-index span").Text()
_, stat.PortName = parsePortIdAndName(portData)
stat.PoePortStatus = s.Find("span.poe-power-mode span").Text()
powerClassText := s.Find("span.poe-portPwr-width span").Text()
stat.PoePowerClass = getPowerClassFromI18nString(powerClassText)
s.Find("div.poe_port_status div div span").Each(func(i int, s *goquery.Selection) {
switch i {
case 1:
stat.VoltageInVolt = parseInt32(s.Text())
case 3:
stat.CurrentInMilliAmps = parseInt32(s.Text())
case 5:
stat.PowerInWatt = parseFloat32(s.Text())
case 7:
stat.TemperatureInCelsius = parseInt32(s.Text())
case 9:
stat.ErrorStatus = strings.TrimSpace(s.Text())
}
})
statuses = append(statuses, stat)
})
return statuses, nil
}
func findPortStatusInGs316EPxHtml(reader io.Reader) ([]PoePortStatus, error) {
doc, err := goquery.NewDocumentFromReader(reader)
if err != nil {
return nil, err
}
var statuses []PoePortStatus
doc.Find("div.port-wrap").Each(func(i int, s *goquery.Selection) {
stat := PoePortStatus{}
stat.PortIndex, stat.PortName = parsePortIdAndName(s.Find("span.port-number").Text())
stat.PoePortStatus = s.Find("span.Status-text").Text()
stat.PoePowerClass = getPowerClassFromI18nString(s.Find("span.Class-text").Text())
stat.VoltageInVolt = parseInt32(s.Find("p.OutputVoltage-text").Text())
stat.CurrentInMilliAmps = parseInt32(s.Find("p.OutputCurrent-text").Text())
stat.PowerInWatt = parseFloat32(s.Find("p.OutputPower-text").Text())
stat.TemperatureInCelsius = parseInt32(s.Find("p.Temperature-text").Text())
stat.ErrorStatus = s.Find("p.Fault-Status-text").Text()
statuses = append(statuses, stat)
})
return statuses, nil
}
// getPowerClassFromI18nString parses the POE power class from a string, like e.g. "ml003@0@"
func getPowerClassFromI18nString(class string) string {
split := strings.Split(class, "@")
if len(split) > 1 {
return split[1]
}
return ""
}
// parsePortIdAndName parses the port number and port name on the status page
func parsePortIdAndName(str string) (int8, string) {
str = strings.ReplaceAll(str, "\u00a0", " ")
index := strings.Index(str, " - ")
if index >= 0 {
portId, _ := strconv.ParseInt(str[:index], 10, 8)
return int8(portId), strings.TrimSpace(str[index+3:])
}
portId, _ := strconv.ParseInt(str, 10, 8)
return int8(portId), ""
}