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|
package resolver
import (
"crypto/rand"
"crypto/rsa"
"fmt"
"io"
"net/http"
"sort"
"testing"
"github.com/go-acme/lego/v4/acme"
"github.com/go-acme/lego/v4/acme/api"
"github.com/go-acme/lego/v4/platform/tester"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
"gopkg.in/square/go-jose.v2"
)
func TestByType(t *testing.T) {
challenges := []acme.Challenge{
{Type: "dns-01"}, {Type: "tlsalpn-01"}, {Type: "http-01"},
}
sort.Sort(byType(challenges))
expected := []acme.Challenge{
{Type: "tlsalpn-01"}, {Type: "http-01"}, {Type: "dns-01"},
}
assert.Equal(t, expected, challenges)
}
func TestValidate(t *testing.T) {
mux, apiURL := tester.SetupFakeAPI(t)
var statuses []string
privateKey, _ := rsa.GenerateKey(rand.Reader, 512)
mux.HandleFunc("/chlg", func(w http.ResponseWriter, r *http.Request) {
if r.Method != http.MethodPost {
http.Error(w, http.StatusText(http.StatusMethodNotAllowed), http.StatusMethodNotAllowed)
return
}
if err := validateNoBody(privateKey, r); err != nil {
http.Error(w, err.Error(), http.StatusBadRequest)
return
}
w.Header().Set("Link", "<"+apiURL+`/my-authz>; rel="up"`)
st := statuses[0]
statuses = statuses[1:]
chlg := &acme.Challenge{Type: "http-01", Status: st, URL: "http://example.com/", Token: "token"}
if st == acme.StatusInvalid {
chlg.Error = &acme.ProblemDetails{}
}
err := tester.WriteJSONResponse(w, chlg)
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
})
mux.HandleFunc("/my-authz", func(w http.ResponseWriter, r *http.Request) {
if r.Method != http.MethodPost {
http.Error(w, http.StatusText(http.StatusMethodNotAllowed), http.StatusMethodNotAllowed)
return
}
st := statuses[0]
statuses = statuses[1:]
authorization := acme.Authorization{
Status: st,
Challenges: []acme.Challenge{},
}
if st == acme.StatusInvalid {
chlg := acme.Challenge{
Status: acme.StatusInvalid,
Error: &acme.ProblemDetails{},
}
authorization.Challenges = append(authorization.Challenges, chlg)
}
err := tester.WriteJSONResponse(w, authorization)
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
})
core, err := api.New(http.DefaultClient, "lego-test", apiURL+"/dir", "", privateKey)
require.NoError(t, err)
testCases := []struct {
name string
statuses []string
want string
}{
{
name: "POST-unexpected",
statuses: []string{"weird"},
want: "unexpected",
},
{
name: "POST-valid",
statuses: []string{acme.StatusValid},
},
{
name: "POST-invalid",
statuses: []string{acme.StatusInvalid},
want: "error",
},
{
name: "POST-pending-unexpected",
statuses: []string{acme.StatusPending, "weird"},
want: "unexpected",
},
{
name: "POST-pending-valid",
statuses: []string{acme.StatusPending, acme.StatusValid},
},
{
name: "POST-pending-invalid",
statuses: []string{acme.StatusPending, acme.StatusInvalid},
want: "error",
},
}
for _, test := range testCases {
t.Run(test.name, func(t *testing.T) {
statuses = test.statuses
err := validate(core, "example.com", acme.Challenge{Type: "http-01", Token: "token", URL: apiURL + "/chlg"})
if test.want == "" {
require.NoError(t, err)
} else {
require.Error(t, err)
assert.Contains(t, err.Error(), test.want)
}
})
}
}
// validateNoBody reads the http.Request POST body, parses the JWS and validates it to read the body.
// If there is an error doing this,
// or if the JWS body is not the empty JSON payload "{}" or a POST-as-GET payload "" an error is returned.
// We use this to verify challenge POSTs to the ts below do not send a JWS body.
func validateNoBody(privateKey *rsa.PrivateKey, r *http.Request) error {
reqBody, err := io.ReadAll(r.Body)
if err != nil {
return err
}
jws, err := jose.ParseSigned(string(reqBody))
if err != nil {
return err
}
body, err := jws.Verify(&jose.JSONWebKey{
Key: privateKey.Public(),
Algorithm: "RSA",
})
if err != nil {
return err
}
if bodyStr := string(body); bodyStr != "{}" && bodyStr != "" {
return fmt.Errorf(`expected JWS POST body "{}" or "", got %q`, bodyStr)
}
return nil
}
|
