rebase: update golang.org/x/net to v0.14

golang.org/x/net/html v0.12 is vulnerable against CVE-2023-3978.
Exploiting it through Ceph-CSI is non-trivial, but rebasing
golang.org/x/net should take away any concerns.

See-also: https://pkg.go.dev/vuln/GO-2023-1988
Signed-off-by: Niels de Vos <ndevos@ibm.com>

vendor/golang.org/x/net/html/render.go

@@ -194,9 +194,8 @@ func render1(w writer, n *Node) error {
 		}
 	}
 
-	// Render any child nodes.
-	switch n.Data {
-	case "iframe", "noembed", "noframes", "noscript", "plaintext", "script", "style", "xmp":
+	// Render any child nodes
+	if childTextNodesAreLiteral(n) {
 		for c := n.FirstChild; c != nil; c = c.NextSibling {
 			if c.Type == TextNode {
 				if _, err := w.WriteString(c.Data); err != nil {
@@ -213,7 +212,7 @@ func render1(w writer, n *Node) error {
 			// last element in the file, with no closing tag.
 			return plaintextAbort
 		}
-	default:
+	} else {
 		for c := n.FirstChild; c != nil; c = c.NextSibling {
 			if err := render1(w, c); err != nil {
 				return err
@@ -231,6 +230,27 @@ func render1(w writer, n *Node) error {
 	return w.WriteByte('>')
 }
 
+func childTextNodesAreLiteral(n *Node) bool {
+	// Per WHATWG HTML 13.3, if the parent of the current node is a style,
+	// script, xmp, iframe, noembed, noframes, or plaintext element, and the
+	// current node is a text node, append the value of the node's data
+	// literally. The specification is not explicit about it, but we only
+	// enforce this if we are in the HTML namespace (i.e. when the namespace is
+	// "").
+	// NOTE: we also always include noscript elements, although the
+	// specification states that they should only be rendered as such if
+	// scripting is enabled for the node (which is not something we track).
+	if n.Namespace != "" {
+		return false
+	}
+	switch n.Data {
+	case "iframe", "noembed", "noframes", "noscript", "plaintext", "script", "style", "xmp":
+		return true
+	default:
+		return false
+	}
+}
+
 // writeQuoted writes s to w surrounded by quotes. Normally it will use double
 // quotes, but if s contains a double quote, it will use single quotes.
 // It is used for writing the identifiers in a doctype declaration.

vendor/golang.org/x/net/http2/transport.go

@@ -19,6 +19,7 @@ import (
 	"io/fs"
 	"log"
 	"math"
+	"math/bits"
 	mathrand "math/rand"
 	"net"
 	"net/http"
@@ -518,11 +519,14 @@ func (t *Transport) RoundTrip(req *http.Request) (*http.Response, error) {
 func authorityAddr(scheme string, authority string) (addr string) {
 	host, port, err := net.SplitHostPort(authority)
 	if err != nil { // authority didn't have a port
+		host = authority
+		port = ""
+	}
+	if port == "" { // authority's port was empty
 		port = "443"
 		if scheme == "http" {
 			port = "80"
 		}
-		host = authority
 	}
 	if a, err := idna.ToASCII(host); err == nil {
 		host = a
@@ -1677,7 +1681,27 @@ func (cs *clientStream) frameScratchBufferLen(maxFrameSize int) int {
 	return int(n) // doesn't truncate; max is 512K
 }
 
-var bufPool sync.Pool // of *[]byte
+// Seven bufPools manage different frame sizes. This helps to avoid scenarios where long-running
+// streaming requests using small frame sizes occupy large buffers initially allocated for prior
+// requests needing big buffers. The size ranges are as follows:
+// {0 KB, 16 KB], {16 KB, 32 KB], {32 KB, 64 KB], {64 KB, 128 KB], {128 KB, 256 KB],
+// {256 KB, 512 KB], {512 KB, infinity}
+// In practice, the maximum scratch buffer size should not exceed 512 KB due to
+// frameScratchBufferLen(maxFrameSize), thus the "infinity pool" should never be used.
+// It exists mainly as a safety measure, for potential future increases in max buffer size.
+var bufPools [7]sync.Pool // of *[]byte
+func bufPoolIndex(size int) int {
+	if size <= 16384 {
+		return 0
+	}
+	size -= 1
+	bits := bits.Len(uint(size))
+	index := bits - 14
+	if index >= len(bufPools) {
+		return len(bufPools) - 1
+	}
+	return index
+}
 
 func (cs *clientStream) writeRequestBody(req *http.Request) (err error) {
 	cc := cs.cc
@@ -1695,12 +1719,13 @@ func (cs *clientStream) writeRequestBody(req *http.Request) (err error) {
 	// Scratch buffer for reading into & writing from.
 	scratchLen := cs.frameScratchBufferLen(maxFrameSize)
 	var buf []byte
-	if bp, ok := bufPool.Get().(*[]byte); ok && len(*bp) >= scratchLen {
-		defer bufPool.Put(bp)
+	index := bufPoolIndex(scratchLen)
+	if bp, ok := bufPools[index].Get().(*[]byte); ok && len(*bp) >= scratchLen {
+		defer bufPools[index].Put(bp)
 		buf = *bp
 	} else {
 		buf = make([]byte, scratchLen)
-		defer bufPool.Put(&buf)
+		defer bufPools[index].Put(&buf)
 	}
 
 	var sawEOF bool