84 lines
2.4 KiB
Go
84 lines
2.4 KiB
Go
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package main
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import (
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"fmt"
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"strings"
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"time"
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)
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func netCommands() []Command {
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return []Command{
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{Path: []string{"net", "check"}, Tier: TierRead,
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Summary: "reachability of <host>[/path]: external (public DNS→CF) vs internal (Traefik LB)", Run: netCheck},
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{Path: []string{"dns", "lookup"}, Tier: TierRead,
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Summary: "resolve <name> via Technitium (10.0.20.201) and public (1.1.1.1), diffed", Run: dnsLookup},
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}
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}
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func fmtProbe(code int, d time.Duration, err error) string {
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if err != nil {
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return "ERR " + err.Error()
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}
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return fmt.Sprintf("HTTP %d %dms", code, d.Milliseconds())
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}
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func netCheck(args []string) error {
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host, rest := firstPositional(args)
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if host == "" {
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return fmt.Errorf("usage: homelab net check <host> [path]")
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}
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path := "/"
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if len(rest) > 0 && !strings.HasPrefix(rest[0], "-") {
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path = rest[0]
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if !strings.HasPrefix(path, "/") {
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path = "/" + path
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}
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}
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u := "https://" + host + path
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fmt.Printf("%s\n", u)
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// external leg: resolve via public DNS, dial the public IP (tests the real CF path)
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pubOut, _ := dig(hostOnly(host), "1.1.1.1", "")
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if pubIP := firstLine(pubOut); pubIP != "" {
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c, d, e := probeURL(clientDialingIP(pubIP, 10*time.Second), u)
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fmt.Printf(" external (public %-15s) %s\n", pubIP, fmtProbe(c, d, e))
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} else {
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fmt.Println(" external (public) no public A record")
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}
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// internal leg: dial the Traefik LB directly
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c, d, e := probeURL(clientDialingIP(internalLBIP, 10*time.Second), u)
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fmt.Printf(" internal (LB %-15s) %s\n", internalLBIP, fmtProbe(c, d, e))
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return nil
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}
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func dnsLookup(args []string) error {
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name, rest := firstPositional(args)
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if name == "" {
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return fmt.Errorf("usage: homelab dns lookup <name> [A|AAAA|TXT|MX|PTR]")
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}
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rr := ""
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if len(rest) > 0 {
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rr = rest[0]
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}
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tech, _ := dig(name, "10.0.20.201", rr)
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pub, _ := dig(name, "1.1.1.1", rr)
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fmt.Printf("technitium (10.0.20.201): %s\n", oneLineList(tech))
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fmt.Printf("public (1.1.1.1) : %s\n", oneLineList(pub))
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if strings.TrimSpace(tech) != strings.TrimSpace(pub) {
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fmt.Println("⚠ mismatch — split-horizon (expected for internal-only apps) or a propagation gap")
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}
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return nil
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}
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func hostOnly(h string) string { // strip any path accidentally included
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return strings.SplitN(h, "/", 2)[0]
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}
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func oneLineList(s string) string {
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s = strings.TrimSpace(s)
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if s == "" {
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return "(none)"
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}
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return strings.ReplaceAll(s, "\n", ", ")
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}
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