Function TestSharingTransitiveSafety

pkg/server/share_test.go:212–241

Issue 228: only follow transitive blobref links in known trusted schema fields.

(t *testing.T)

// Issue 228: only follow transitive blobref links in known trusted schema fields.
func TestSharingTransitiveSafety(t *testing.T) {
	st := newShareTester(t)
	defer st.done()

	content := "the secret"
	contentRef := blob.RefFromString(content)

	// User-injected blob, somehow.
	evilClaim := fmt.Sprintf("Some payload containing the ref: %v", contentRef)
	evilClaimRef := blob.RefFromString(evilClaim)

	share := schema.NewShareRef(schema.ShareHaveRef, false).
		SetShareTarget(evilClaimRef).
		SetShareIsTransitive(true).
		SetSigner(blob.RefFromString("irrelevant")).
		SetRawStringField("camliSig", "alsounused")
	shareRef := func() blob.Ref { return share.Blob().BlobRef() }

	st.put(share.Blob())
	st.putRaw(contentRef, content)
	st.putRaw(evilClaimRef, evilClaim)

	st.testGet(shareRef().String(), noError)
	st.testGet(fmt.Sprintf("%s?via=%s", evilClaimRef, shareRef()), noError)

	st.testGet(fmt.Sprintf("%s?via=%s,%s", contentRef, shareRef(), evilClaimRef), viaChainInvalidLink)
	if !st.slept() {
		t.Error("expected sleep after miss")
	}
}

// TODO(mpl): try to refactor TestHandleGet*, but there are enough subtle differences to barely make it worth it