Update dependencies and build to go1.22

vendor/github.com/labstack/echo/v4/middleware/util.go

@@ -1,7 +1,14 @@
+// SPDX-License-Identifier: MIT
+// SPDX-FileCopyrightText: © 2015 LabStack LLC and Echo contributors
+
 package middleware
 
 import (
+	"bufio"
+	"crypto/rand"
+	"io"
 	"strings"
+	"sync"
 )
 
 func matchScheme(domain, pattern string) bool {
@@ -52,3 +59,45 @@ func matchSubdomain(domain, pattern string) bool {
 	}
 	return false
 }
+
+// https://tip.golang.org/doc/go1.19#:~:text=Read%20no%20longer%20buffers%20random%20data%20obtained%20from%20the%20operating%20system%20between%20calls
+var randomReaderPool = sync.Pool{New: func() interface{} {
+	return bufio.NewReader(rand.Reader)
+}}
+
+const randomStringCharset = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"
+const randomStringCharsetLen = 52 // len(randomStringCharset)
+const randomStringMaxByte = 255 - (256 % randomStringCharsetLen)
+
+func randomString(length uint8) string {
+	reader := randomReaderPool.Get().(*bufio.Reader)
+	defer randomReaderPool.Put(reader)
+
+	b := make([]byte, length)
+	r := make([]byte, length+(length/4)) // perf: avoid read from rand.Reader many times
+	var i uint8 = 0
+
+	// security note:
+	// we can't just simply do b[i]=randomStringCharset[rb%len(randomStringCharset)],
+	// len(len(randomStringCharset)) is 52, and rb is [0, 255], 256 = 52 * 4 + 48.
+	// make the first 48 characters more possibly to be generated then others.
+	// So we have to skip bytes when rb > randomStringMaxByte
+
+	for {
+		_, err := io.ReadFull(reader, r)
+		if err != nil {
+			panic("unexpected error happened when reading from bufio.NewReader(crypto/rand.Reader)")
+		}
+		for _, rb := range r {
+			if rb > randomStringMaxByte {
+				// Skip this number to avoid bias.
+				continue
+			}
+			b[i] = randomStringCharset[rb%randomStringCharsetLen]
+			i++
+			if i == length {
+				return string(b)
+			}
+		}
+	}
+}