64 lines
1.4 KiB
Go
64 lines
1.4 KiB
Go
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// Binary diagd provides automated network diagnostics.
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package main
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import (
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"flag"
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"fmt"
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"html"
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"io"
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"log"
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"net/http"
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"sync"
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"router7/internal/diag"
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)
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func dump(w io.Writer, re *diag.EvalResult) {
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symbol := "✔"
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if re.Error {
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symbol = "✘"
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}
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fmt.Fprintf(w, "<li>%s %s: %s<ul>", symbol, html.EscapeString(re.Name), html.EscapeString(re.Status))
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for _, ch := range re.Children {
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dump(w, ch)
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}
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fmt.Fprintf(w, "</ul></li>")
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}
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func logic() error {
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const (
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uplink = "uplink0" /* enp0s31f6 */
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ip6allrouters = "ff02::2" // no /etc/hosts on gokrazy
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)
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m := diag.NewMonitor(diag.Link(uplink).
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Then(diag.DHCPv4().
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Then(diag.Ping4Gateway().
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Then(diag.Ping4("google.ch").
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Then(diag.TCP4("www.google.ch:80"))))).
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Then(diag.DHCPv6().
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Then(diag.Ping6("lan0", "google.ch"))).
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Then(diag.RouterAdvertisments(uplink).
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Then(diag.Ping6Gateway().
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Then(diag.Ping6(uplink, "google.ch").
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Then(diag.TCP6("www.google.ch:80"))))).
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Then(diag.Ping6("", ip6allrouters+"%"+uplink)))
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var mu sync.Mutex
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http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
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mu.Lock()
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re := m.Evaluate()
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mu.Unlock()
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fmt.Fprintf(w, `<!DOCTYPE html><style type="text/css">ul { list-style-type: none; }</style><ul>`)
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dump(w, re)
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})
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// TODO: only listen on private IP addresses
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return http.ListenAndServe(":7733", nil)
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}
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func main() {
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flag.Parse()
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if err := logic(); err != nil {
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log.Fatal(err)
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}
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}
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