Update dependencies

2024-11-01 17:33:34 +00:00
parent 033ac0b400
commit 5cdfab398d
3596 changed files with 1033483 additions and 259 deletions
--- a/vendor/tailscale.com/net/dns/resolver/debug.go
+++ b/vendor/tailscale.com/net/dns/resolver/debug.go
@@ -0,0 +1,77 @@
+// Copyright (c) Tailscale Inc & AUTHORS
+// SPDX-License-Identifier: BSD-3-Clause
+
+package resolver
+
+import (
+	"fmt"
+	"html"
+	"net/http"
+	"strconv"
+	"sync"
+	"sync/atomic"
+	"time"
+
+	"tailscale.com/health"
+)
+
+func init() {
+	health.RegisterDebugHandler("dnsfwd", http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		n, _ := strconv.Atoi(r.FormValue("n"))
+		if n <= 0 {
+			n = 100
+		} else if n > 10000 {
+			n = 10000
+		}
+		fl := fwdLogAtomic.Load()
+		if fl == nil || n != len(fl.ent) {
+			fl = &fwdLog{ent: make([]fwdLogEntry, n)}
+			fwdLogAtomic.Store(fl)
+		}
+		fl.ServeHTTP(w, r)
+	}))
+}
+
+var fwdLogAtomic atomic.Pointer[fwdLog]
+
+type fwdLog struct {
+	mu  sync.Mutex
+	pos int // ent[pos] is next entry
+	ent []fwdLogEntry
+}
+
+type fwdLogEntry struct {
+	Domain string
+	Time   time.Time
+}
+
+func (fl *fwdLog) addName(name string) {
+	if fl == nil {
+		return
+	}
+	fl.mu.Lock()
+	defer fl.mu.Unlock()
+	if len(fl.ent) == 0 {
+		return
+	}
+	fl.ent[fl.pos] = fwdLogEntry{Domain: name, Time: time.Now()}
+	fl.pos++
+	if fl.pos == len(fl.ent) {
+		fl.pos = 0
+	}
+}
+
+func (fl *fwdLog) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+	fl.mu.Lock()
+	defer fl.mu.Unlock()
+
+	fmt.Fprintf(w, "<html><h1>DNS forwards</h1>")
+	now := time.Now()
+	for i := range len(fl.ent) {
+		ent := fl.ent[(i+fl.pos)%len(fl.ent)]
+		if ent.Domain == "" {
+			continue
+		}
+		fmt.Fprintf(w, "%v ago: %v<br>\n", now.Sub(ent.Time).Round(time.Second), html.EscapeString(ent.Domain))
+	}
+}