tempfork/acme: pull in latest changes for Go 1.24 (#15062)

https://github.com/tailscale/golang-x-crypto/commit/9a281fd8facad954dae80ef984c5d5d763f8ff91

Updates #15015

Signed-off-by: Andrew Lytvynov <[email protected]>

go.mod

@@ -74,7 +74,7 @@ require (
 	github.com/tailscale/certstore v0.1.1-0.20231202035212-d3fa0460f47e
 	github.com/tailscale/depaware v0.0.0-20250112153213-b748de04d81b
 	github.com/tailscale/goexpect v0.0.0-20210902213824-6e8c725cea41
-	github.com/tailscale/golang-x-crypto v0.0.0-20240604161659-3fde5e568aa4
+	github.com/tailscale/golang-x-crypto v0.0.0-20250218230618-9a281fd8faca
 	github.com/tailscale/goupnp v1.0.1-0.20210804011211-c64d0f06ea05
 	github.com/tailscale/hujson v0.0.0-20221223112325-20486734a56a
 	github.com/tailscale/mkctr v0.0.0-20250110151924-54977352e4a6

go.sum

@@ -900,8 +900,8 @@ github.com/tailscale/go-winio v0.0.0-20231025203758-c4f33415bf55 h1:Gzfnfk2TWrk8
 github.com/tailscale/go-winio v0.0.0-20231025203758-c4f33415bf55/go.mod h1:4k4QO+dQ3R5FofL+SanAUZe+/QfeK0+OIuwDIRu2vSg=
 github.com/tailscale/goexpect v0.0.0-20210902213824-6e8c725cea41 h1:/V2rCMMWcsjYaYO2MeovLw+ClP63OtXgCF2Y1eb8+Ns=
 github.com/tailscale/goexpect v0.0.0-20210902213824-6e8c725cea41/go.mod h1:/roCdA6gg6lQyw/Oz6gIIGu3ggJKYhF+WC/AQReE5XQ=
-github.com/tailscale/golang-x-crypto v0.0.0-20240604161659-3fde5e568aa4 h1:rXZGgEa+k2vJM8xT0PoSKfVXwFGPQ3z3CJfmnHJkZZw=
-github.com/tailscale/golang-x-crypto v0.0.0-20240604161659-3fde5e568aa4/go.mod h1:ikbF+YT089eInTp9f2vmvy4+ZVnW5hzX1q2WknxSprQ=
+github.com/tailscale/golang-x-crypto v0.0.0-20250218230618-9a281fd8faca h1:ecjHwH73Yvqf/oIdQ2vxAX+zc6caQsYdPzsxNW1J3G8=
+github.com/tailscale/golang-x-crypto v0.0.0-20250218230618-9a281fd8faca/go.mod h1:ikbF+YT089eInTp9f2vmvy4+ZVnW5hzX1q2WknxSprQ=
 github.com/tailscale/goupnp v1.0.1-0.20210804011211-c64d0f06ea05 h1:4chzWmimtJPxRs2O36yuGRW3f9SYV+bMTTvMBI0EKio=
 github.com/tailscale/goupnp v1.0.1-0.20210804011211-c64d0f06ea05/go.mod h1:PdCqy9JzfWMJf1H5UJW2ip33/d4YkoKN0r67yKH1mG8=
 github.com/tailscale/hujson v0.0.0-20221223112325-20486734a56a h1:SJy1Pu0eH1C29XwJucQo73FrleVK6t4kYz4NVhp34Yw=

tempfork/acme/acme.go

@@ -557,7 +557,11 @@ func (c *Client) Accept(ctx context.Context, chal *Challenge) (*Challenge, error
 		return nil, err
 	}
 
-	res, err := c.post(ctx, nil, chal.URI, json.RawMessage("{}"), wantStatus(
+	payload := json.RawMessage("{}")
+	if len(chal.Payload) != 0 {
+		payload = chal.Payload
+	}
+	res, err := c.post(ctx, nil, chal.URI, payload, wantStatus(
 		http.StatusOK,       // according to the spec
 		http.StatusAccepted, // Let's Encrypt: see https://goo.gl/WsJ7VT (acme-divergences.md)
 	))

tempfork/acme/acme_test.go

@@ -875,7 +875,7 @@ func TestTLSALPN01ChallengeCert(t *testing.T) {
 }
 
 func TestTLSChallengeCertOpt(t *testing.T) {
-	key, err := rsa.GenerateKey(rand.Reader, 512)
+	key, err := rsa.GenerateKey(rand.Reader, 1024)
 	if err != nil {
 		t.Fatal(err)
 	}

tempfork/acme/http.go

@@ -15,6 +15,7 @@ import (
 	"io"
 	"math/big"
 	"net/http"
+	"runtime/debug"
 	"strconv"
 	"strings"
 	"time"
@@ -271,9 +272,27 @@ func (c *Client) httpClient() *http.Client {
 }
 
 // packageVersion is the version of the module that contains this package, for
-// sending as part of the User-Agent header. It's set in version_go112.go.
+// sending as part of the User-Agent header.
 var packageVersion string
 
+func init() {
+	// Set packageVersion if the binary was built in modules mode and x/crypto
+	// was not replaced with a different module.
+	info, ok := debug.ReadBuildInfo()
+	if !ok {
+		return
+	}
+	for _, m := range info.Deps {
+		if m.Path != "golang.org/x/crypto" {
+			continue
+		}
+		if m.Replace == nil {
+			packageVersion = m.Version
+		}
+		break
+	}
+}
+
 // userAgent returns the User-Agent header value. It includes the package name,
 // the module version (if available), and the c.UserAgent value (if set).
 func (c *Client) userAgent() string {

tempfork/acme/types.go

@@ -7,6 +7,7 @@ package acme
 import (
 	"crypto"
 	"crypto/x509"
+	"encoding/json"
 	"errors"
 	"fmt"
 	"net/http"
@@ -292,7 +293,7 @@ type Directory struct {
 	// Renewal Information (ARI) Extension.
 	RenewalInfoURL string
 
-	// Term is a URI identifying the current terms of service.
+	// Terms is a URI identifying the current terms of service.
 	Terms string
 
 	// Website is an HTTP or HTTPS URL locating a website
@@ -531,6 +532,16 @@ type Challenge struct {
 	// when this challenge was used.
 	// The type of a non-nil value is *Error.
 	Error error
+
+	// Payload is the JSON-formatted payload that the client sends
+	// to the server to indicate it is ready to respond to the challenge.
+	// When unset, it defaults to an empty JSON object: {}.
+	// For most challenges, the client must not set Payload,
+	// see https://tools.ietf.org/html/rfc8555#section-7.5.1.
+	// Payload is used only for newer challenges (such as "device-attest-01")
+	// where the client must send additional data for the server to validate
+	// the challenge.
+	Payload json.RawMessage
 }
 
 // wireChallenge is ACME JSON challenge representation.