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DateKeys/capsule/release_test.go

80 lines
2.9 KiB

package capsule_test
import (
"bytes"
"context"
"encoding/hex"
"fmt"
"net/http"
"net/http/httptest"
"sync/atomic"
"testing"
datekeys "g.activething.com/go/DateKeys"
"g.activething.com/go/DateKeys/capsule"
"g.activething.com/go/DateKeys/internal/testkit"
"g.activething.com/go/DateKeys/profile"
"g.activething.com/go/DateKeys/provider"
"g.activething.com/go/DateKeys/provider/drand"
)
// Spec §63 steps 9 and 10: a source that fetches releases over a network
// verifies each response with the rules of step 10 and discards the one that
// fails, so a relay whose only answer is a release of another round, or a
// signature that does not verify, gives ERR_RELEASE_UNAVAILABLE at step 9.
// The codes of step 10 are those of a release supplied directly, as in the
// official vectors.
func TestReleaseFromANetworkSource(t *testing.T) {
f := loadFixture(t, "time_only")
for _, tc := range []struct {
name string
release provider.Release
direct error // the code of step 10, nil when the release is valid
}{
{"the published release", f.release, nil},
{"a release of another round, signed for that round", testkit.Release(1001), datekeys.ErrRoundMismatch},
{"a negated signature", provider.Release{Round: 1000, Signature: testkit.Negated(f.release.Signature)}, datekeys.ErrReleaseInvalid},
} {
var requests atomic.Int32
relay := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
requests.Add(1)
fmt.Fprintf(w, `{"round":%d,"signature":"%s"}`, tc.release.Round, hex.EncodeToString(tc.release.Signature))
}))
o := f.openOptions(t)
o.Source = drand.NewWithHTTPClient(relay.Client(), relay.URL)
step, err := openAt(t, f.dkc, o)
relay.Close()
switch {
case requests.Load() != 1:
t.Errorf("%s: %d relay requests", tc.name, requests.Load())
case tc.direct == nil && err != nil:
t.Errorf("%s, from a relay: %v at step %d", tc.name, err, step)
case tc.direct != nil && (datekeys.Code(err) != "ERR_RELEASE_UNAVAILABLE" || step != 9):
t.Errorf("%s, from a relay: got %v at step %d, want ERR_RELEASE_UNAVAILABLE at step 9", tc.name, err, step)
}
// The same release, supplied directly.
o.Source = provider.ReleaseSourceFunc(func(context.Context, *profile.Profile, provider.Condition) (provider.Release, error) {
return tc.release, nil
})
step, err = openAt(t, f.dkc, o)
if tc.direct == nil {
if err != nil {
t.Errorf("%s, supplied directly: %v at step %d", tc.name, err, step)
}
continue
}
expectStep(t, tc.name+", supplied directly", step, err, tc.direct, 10)
}
}
// openAt runs the whole flow and returns the step that failed, 0 on success.
func openAt(t *testing.T, dkc []byte, o capsule.OpenOptions) (int, error) {
t.Helper()
out, err := capsule.Open(context.Background(), discardWriter{}, bytes.NewReader(dkc), o)
if out == nil {
t.Fatalf("Open returned no result: %v", err)
}
return failedStep(t, out.Inspection.Checks, err), err
}

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