b2064d74a8
* refactor: remove Codecs table * chore: go-cid 0.2.0 Codec table was missing dag-json and it had invalid code for dag-cbor. It also had invalid string representation of dag-pb -- it was using 'protobuf' which is a totally different code. This removes invalid mappings entirely. https://github.com/multiformats/go-multicodec should be used instead.
765 lines
16 KiB
Go
765 lines
16 KiB
Go
package cid
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import (
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"bytes"
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"encoding/json"
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"fmt"
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"io"
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"math/rand"
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"reflect"
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"strings"
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"testing"
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"testing/iotest"
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mbase "github.com/multiformats/go-multibase"
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mh "github.com/multiformats/go-multihash"
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)
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func assertEqual(t *testing.T, a, b Cid) {
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if a.Type() != b.Type() {
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t.Fatal("mismatch on type")
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}
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if a.Version() != b.Version() {
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t.Fatal("mismatch on version")
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}
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if !bytes.Equal(a.Hash(), b.Hash()) {
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t.Fatal("multihash mismatch")
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}
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}
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func TestPrefixSum(t *testing.T) {
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// Test creating CIDs both manually and with Prefix.
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// Tests: https://github.com/ipfs/go-cid/issues/83
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for _, hashfun := range []uint64{
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mh.IDENTITY, mh.SHA3, mh.SHA2_256,
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} {
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h1, err := mh.Sum([]byte("TEST"), hashfun, -1)
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if err != nil {
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t.Fatal(err)
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}
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c1 := NewCidV1(Raw, h1)
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h2, err := mh.Sum([]byte("foobar"), hashfun, -1)
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if err != nil {
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t.Fatal(err)
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}
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c2 := NewCidV1(Raw, h2)
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c3, err := c1.Prefix().Sum([]byte("foobar"))
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if err != nil {
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t.Fatal(err)
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}
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if !c2.Equals(c3) {
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t.Fatal("expected CIDs to be equal")
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}
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}
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}
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func TestBasicMarshaling(t *testing.T) {
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h, err := mh.Sum([]byte("TEST"), mh.SHA3, 4)
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if err != nil {
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t.Fatal(err)
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}
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cid := NewCidV1(7, h)
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data := cid.Bytes()
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out, err := Cast(data)
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if err != nil {
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t.Fatal(err)
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}
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assertEqual(t, cid, out)
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s := cid.String()
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out2, err := Decode(s)
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if err != nil {
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t.Fatal(err)
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}
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assertEqual(t, cid, out2)
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}
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func TestBasesMarshaling(t *testing.T) {
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h, err := mh.Sum([]byte("TEST"), mh.SHA3, 4)
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if err != nil {
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t.Fatal(err)
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}
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cid := NewCidV1(7, h)
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data := cid.Bytes()
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out, err := Cast(data)
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if err != nil {
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t.Fatal(err)
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}
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assertEqual(t, cid, out)
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testBases := []mbase.Encoding{
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mbase.Base16,
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mbase.Base32,
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mbase.Base32hex,
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mbase.Base32pad,
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mbase.Base32hexPad,
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mbase.Base58BTC,
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mbase.Base58Flickr,
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mbase.Base64pad,
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mbase.Base64urlPad,
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mbase.Base64url,
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mbase.Base64,
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}
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for _, b := range testBases {
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s, err := cid.StringOfBase(b)
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if err != nil {
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t.Fatal(err)
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}
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if s[0] != byte(b) {
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t.Fatal("Invalid multibase header")
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}
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out2, err := Decode(s)
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if err != nil {
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t.Fatal(err)
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}
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assertEqual(t, cid, out2)
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encoder, err := mbase.NewEncoder(b)
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if err != nil {
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t.Fatal(err)
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}
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s2 := cid.Encode(encoder)
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if s != s2 {
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t.Fatalf("%q != %q", s, s2)
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}
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ee, err := ExtractEncoding(s)
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if err != nil {
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t.Fatal(err)
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}
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if ee != b {
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t.Fatalf("could not properly determine base (got %v)", ee)
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}
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}
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ee, err := ExtractEncoding("QmdfTbBqBPQ7VNxZEYEj14VmRuZBkqFbiwReogJgS1zR1n")
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if err != nil {
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t.Fatal(err)
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}
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if ee != mbase.Base58BTC {
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t.Fatalf("expected Base58BTC from Qm string (got %v)", ee)
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}
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ee, err = ExtractEncoding("1")
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if err == nil {
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t.Fatal("expected too-short error from ExtractEncoding")
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}
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if ee != -1 {
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t.Fatal("expected -1 from too-short ExtractEncoding")
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}
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}
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func TestBinaryMarshaling(t *testing.T) {
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data := []byte("this is some test content")
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hash, _ := mh.Sum(data, mh.SHA2_256, -1)
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c := NewCidV1(DagCBOR, hash)
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var c2 Cid
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var c3 Cid
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data, err := c.MarshalBinary()
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if err != nil {
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t.Fatal(err)
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}
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if err = c2.UnmarshalBinary(data); err != nil {
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t.Fatal(err)
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}
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if !c.Equals(c2) {
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t.Errorf("cids should be the same: %s %s", c, c2)
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}
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var buf bytes.Buffer
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wrote, err := c.WriteBytes(&buf)
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if err != nil {
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t.Fatal(err)
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}
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if wrote != 36 {
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t.Fatalf("expected 36 bytes written (got %d)", wrote)
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}
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if err = c3.UnmarshalBinary(data); err != nil {
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t.Fatal(err)
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}
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if !c.Equals(c3) {
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t.Errorf("cids should be the same: %s %s", c, c3)
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}
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}
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func TestTextMarshaling(t *testing.T) {
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data := []byte("this is some test content")
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hash, _ := mh.Sum(data, mh.SHA2_256, -1)
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c := NewCidV1(DagCBOR, hash)
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var c2 Cid
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data, err := c.MarshalText()
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if err != nil {
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t.Fatal(err)
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}
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if err = c2.UnmarshalText(data); err != nil {
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t.Fatal(err)
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}
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if !c.Equals(c2) {
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t.Errorf("cids should be the same: %s %s", c, c2)
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}
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if c.KeyString() != string(c.Bytes()) {
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t.Errorf("got unexpected KeyString() result")
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}
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}
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func TestEmptyString(t *testing.T) {
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_, err := Decode("")
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if err == nil {
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t.Fatal("shouldnt be able to parse an empty cid")
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}
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}
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func TestV0Handling(t *testing.T) {
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old := "QmdfTbBqBPQ7VNxZEYEj14VmRuZBkqFbiwReogJgS1zR1n"
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cid, err := Decode(old)
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if err != nil {
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t.Fatal(err)
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}
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if cid.Version() != 0 {
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t.Fatal("should have gotten version 0 cid")
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}
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if cid.Hash().B58String() != old {
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t.Fatalf("marshaling roundtrip failed: %s != %s", cid.Hash().B58String(), old)
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}
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if cid.String() != old {
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t.Fatal("marshaling roundtrip failed")
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}
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byteLen := cid.ByteLen()
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if byteLen != 34 {
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t.Fatalf("expected V0 ByteLen to be 34 (got %d)", byteLen)
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}
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new, err := cid.StringOfBase(mbase.Base58BTC)
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if err != nil {
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t.Fatal(err)
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}
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if new != old {
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t.Fatal("StringOfBase roundtrip failed")
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}
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encoder, err := mbase.NewEncoder(mbase.Base58BTC)
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if err != nil {
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t.Fatal(err)
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}
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if cid.Encode(encoder) != old {
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t.Fatal("Encode roundtrip failed")
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}
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_, err = cid.StringOfBase(mbase.Base32)
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if err != ErrInvalidEncoding {
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t.Fatalf("expected ErrInvalidEncoding for V0 StringOfBase(Base32) (got %v)", err)
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}
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}
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func TestV0ErrorCases(t *testing.T) {
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badb58 := "QmdfTbBqBPQ7VNxZEYEj14VmRuZBkqFbiwReogJgS1zIII"
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_, err := Decode(badb58)
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if err == nil {
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t.Fatal("should have failed to decode that ref")
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}
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}
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func TestNewPrefixV1(t *testing.T) {
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data := []byte("this is some test content")
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// Construct c1
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prefix := NewPrefixV1(DagCBOR, mh.SHA2_256)
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c1, err := prefix.Sum(data)
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if err != nil {
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t.Fatal(err)
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}
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if c1.Prefix() != prefix {
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t.Fatal("prefix not preserved")
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}
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// Construct c2
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hash, err := mh.Sum(data, mh.SHA2_256, -1)
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if err != nil {
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t.Fatal(err)
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}
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c2 := NewCidV1(DagCBOR, hash)
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if !c1.Equals(c2) {
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t.Fatal("cids mismatch")
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}
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if c1.Prefix() != c2.Prefix() {
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t.Fatal("prefixes mismatch")
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}
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}
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func TestNewPrefixV0(t *testing.T) {
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data := []byte("this is some test content")
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// Construct c1
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prefix := NewPrefixV0(mh.SHA2_256)
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c1, err := prefix.Sum(data)
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if err != nil {
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t.Fatal(err)
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}
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if c1.Prefix() != prefix {
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t.Fatal("prefix not preserved")
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}
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// Construct c2
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hash, err := mh.Sum(data, mh.SHA2_256, -1)
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if err != nil {
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t.Fatal(err)
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}
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c2 := NewCidV0(hash)
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if !c1.Equals(c2) {
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t.Fatal("cids mismatch")
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}
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if c1.Prefix() != c2.Prefix() {
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t.Fatal("prefixes mismatch")
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}
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}
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func TestInvalidV0Prefix(t *testing.T) {
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tests := []Prefix{
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{
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MhType: mh.SHA2_256,
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MhLength: 31,
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},
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{
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MhType: mh.SHA2_256,
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MhLength: 33,
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},
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{
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MhType: mh.SHA2_256,
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MhLength: -2,
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},
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{
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MhType: mh.SHA2_512,
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MhLength: 32,
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},
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{
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MhType: mh.SHA2_512,
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MhLength: -1,
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},
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}
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for i, p := range tests {
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t.Log(i)
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_, err := p.Sum([]byte("testdata"))
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if err == nil {
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t.Fatalf("should error (index %d)", i)
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}
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}
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}
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func TestBadPrefix(t *testing.T) {
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p := Prefix{Version: 3, Codec: DagProtobuf, MhType: mh.SHA2_256, MhLength: 3}
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_, err := p.Sum([]byte{0x00, 0x01, 0x03})
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if err == nil {
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t.Fatalf("expected error on v3 prefix Sum")
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}
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}
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func TestPrefixRoundtrip(t *testing.T) {
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data := []byte("this is some test content")
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hash, _ := mh.Sum(data, mh.SHA2_256, -1)
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c := NewCidV1(DagCBOR, hash)
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pref := c.Prefix()
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c2, err := pref.Sum(data)
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if err != nil {
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t.Fatal(err)
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}
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if !c.Equals(c2) {
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t.Fatal("output didnt match original")
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}
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pb := pref.Bytes()
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pref2, err := PrefixFromBytes(pb)
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if err != nil {
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t.Fatal(err)
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}
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if pref.Version != pref2.Version || pref.Codec != pref2.Codec ||
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pref.MhType != pref2.MhType || pref.MhLength != pref2.MhLength {
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t.Fatal("input prefix didnt match output")
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}
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}
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func TestBadPrefixFromBytes(t *testing.T) {
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_, err := PrefixFromBytes([]byte{0x80})
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if err == nil {
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t.Fatal("expected error for bad byte 0")
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}
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_, err = PrefixFromBytes([]byte{0x01, 0x80})
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if err == nil {
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t.Fatal("expected error for bad byte 1")
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}
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_, err = PrefixFromBytes([]byte{0x01, 0x01, 0x80})
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if err == nil {
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t.Fatal("expected error for bad byte 2")
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}
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_, err = PrefixFromBytes([]byte{0x01, 0x01, 0x01, 0x80})
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if err == nil {
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t.Fatal("expected error for bad byte 3")
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}
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}
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func Test16BytesVarint(t *testing.T) {
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data := []byte("this is some test content")
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hash, _ := mh.Sum(data, mh.SHA2_256, -1)
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c := NewCidV1(1<<63, hash)
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_ = c.Bytes()
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}
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func TestFuzzCid(t *testing.T) {
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buf := make([]byte, 128)
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for i := 0; i < 200; i++ {
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s := rand.Intn(128)
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rand.Read(buf[:s])
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_, _ = Cast(buf[:s])
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}
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}
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func TestParse(t *testing.T) {
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cid, err := Parse(123)
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if err == nil {
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t.Fatalf("expected error from Parse()")
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}
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if !strings.Contains(err.Error(), "can't parse 123 as Cid") {
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t.Fatalf("expected int error, got %s", err.Error())
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}
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theHash := "QmdfTbBqBPQ7VNxZEYEj14VmRuZBkqFbiwReogJgS1zR1n"
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h, err := mh.FromB58String(theHash)
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if err != nil {
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t.Fatal(err)
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}
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assertions := [][]interface{}{
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{NewCidV0(h), theHash},
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{NewCidV0(h).Bytes(), theHash},
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{h, theHash},
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{theHash, theHash},
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{"/ipfs/" + theHash, theHash},
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{"https://ipfs.io/ipfs/" + theHash, theHash},
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{"http://localhost:8080/ipfs/" + theHash, theHash},
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}
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assert := func(arg interface{}, expected string) error {
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cid, err = Parse(arg)
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if err != nil {
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return err
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}
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if cid.Version() != 0 {
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return fmt.Errorf("expected version 0, got %d", cid.Version())
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}
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actual := cid.Hash().B58String()
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if actual != expected {
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return fmt.Errorf("expected hash %s, got %s", expected, actual)
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}
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actual = cid.String()
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if actual != expected {
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return fmt.Errorf("expected string %s, got %s", expected, actual)
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}
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return nil
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}
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for _, args := range assertions {
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if err := assert(args[0], args[1].(string)); err != nil {
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t.Fatal(err)
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}
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}
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}
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func TestHexDecode(t *testing.T) {
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hexcid := "f015512209d8453505bdc6f269678e16b3e56c2a2948a41f2c792617cc9611ed363c95b63"
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c, err := Decode(hexcid)
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if err != nil {
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t.Fatal(err)
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}
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if c.String() != "bafkreie5qrjvaw64n4tjm6hbnm7fnqvcssfed4whsjqxzslbd3jwhsk3mm" {
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t.Fatal("hash value failed to round trip decoding from hex")
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}
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}
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func ExampleDecode() {
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encoded := "bafkreie5qrjvaw64n4tjm6hbnm7fnqvcssfed4whsjqxzslbd3jwhsk3mm"
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c, err := Decode(encoded)
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if err != nil {
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fmt.Printf("Error: %s", err)
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return
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}
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fmt.Println(c)
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// Output: bafkreie5qrjvaw64n4tjm6hbnm7fnqvcssfed4whsjqxzslbd3jwhsk3mm
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}
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func TestFromJson(t *testing.T) {
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cval := "bafkreie5qrjvaw64n4tjm6hbnm7fnqvcssfed4whsjqxzslbd3jwhsk3mm"
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jsoncid := []byte(`{"/":"` + cval + `"}`)
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var c Cid
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if err := json.Unmarshal(jsoncid, &c); err != nil {
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t.Fatal(err)
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}
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if c.String() != cval {
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t.Fatal("json parsing failed")
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}
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}
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func TestJsonRoundTrip(t *testing.T) {
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expectedJSON := `{"/":"bafkreie5qrjvaw64n4tjm6hbnm7fnqvcssfed4whsjqxzslbd3jwhsk3mm"}`
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exp, err := Decode("bafkreie5qrjvaw64n4tjm6hbnm7fnqvcssfed4whsjqxzslbd3jwhsk3mm")
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
// Verify it works for a *Cid.
|
|
enc, err := json.Marshal(exp)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
var actual Cid
|
|
if err = json.Unmarshal(enc, &actual); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
if !exp.Equals(actual) {
|
|
t.Fatal("cids not equal for *Cid")
|
|
}
|
|
|
|
if string(enc) != expectedJSON {
|
|
t.Fatalf("did not get expected JSON form (got %q)", string(enc))
|
|
}
|
|
|
|
// Verify it works for a Cid.
|
|
enc, err = json.Marshal(exp)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
var actual2 Cid
|
|
if err = json.Unmarshal(enc, &actual2); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
if !exp.Equals(actual2) {
|
|
t.Fatal("cids not equal for Cid")
|
|
}
|
|
|
|
if err = actual2.UnmarshalJSON([]byte("1")); err == nil {
|
|
t.Fatal("expected error for too-short JSON")
|
|
}
|
|
|
|
if err = actual2.UnmarshalJSON([]byte(`{"nope":"nope"}`)); err == nil {
|
|
t.Fatal("expected error for bad CID JSON")
|
|
}
|
|
|
|
if err = actual2.UnmarshalJSON([]byte(`bad "" json!`)); err == nil {
|
|
t.Fatal("expected error for bad JSON")
|
|
}
|
|
|
|
var actual3 Cid
|
|
enc, err = actual3.MarshalJSON()
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
if string(enc) != "null" {
|
|
t.Fatalf("expected 'null' string for undefined CID (got %q)", string(enc))
|
|
}
|
|
}
|
|
|
|
func BenchmarkStringV1(b *testing.B) {
|
|
data := []byte("this is some test content")
|
|
hash, _ := mh.Sum(data, mh.SHA2_256, -1)
|
|
cid := NewCidV1(Raw, hash)
|
|
|
|
b.ReportAllocs()
|
|
b.ResetTimer()
|
|
|
|
count := 0
|
|
for i := 0; i < b.N; i++ {
|
|
count += len(cid.String())
|
|
}
|
|
if count != 49*b.N {
|
|
b.FailNow()
|
|
}
|
|
}
|
|
|
|
func TestReadCidsFromBuffer(t *testing.T) {
|
|
cidstr := []string{
|
|
"bafkreie5qrjvaw64n4tjm6hbnm7fnqvcssfed4whsjqxzslbd3jwhsk3mm",
|
|
"k2cwueckqkibutvhkr4p2ln2pjcaxaakpd9db0e7j7ax1lxhhxy3ekpv",
|
|
"Qmf5Qzp6nGBku7CEn2UQx4mgN8TW69YUok36DrGa6NN893",
|
|
"zb2rhZi1JR4eNc2jBGaRYJKYM8JEB4ovenym8L1CmFsRAytkz",
|
|
"bafkqarjpmzuwyzltorxxezjpkvcfgqkfjfbfcvslivje2vchkzdu6rckjjcfgtkolaze6mssjqzeyn2ekrcfatkjku2vowseky3fswkfkm2deqkrju3e2",
|
|
}
|
|
|
|
var cids []Cid
|
|
var buf []byte
|
|
for _, cs := range cidstr {
|
|
c, err := Decode(cs)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
cids = append(cids, c)
|
|
buf = append(buf, c.Bytes()...)
|
|
}
|
|
|
|
var cur int
|
|
for _, expc := range cids {
|
|
n, c, err := CidFromBytes(buf[cur:])
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
if c != expc {
|
|
t.Fatal("cids mismatched")
|
|
}
|
|
cur += n
|
|
}
|
|
if cur != len(buf) {
|
|
t.Fatal("had trailing bytes")
|
|
}
|
|
|
|
// The same, but now with CidFromReader.
|
|
// In multiple forms, to catch more io interface bugs.
|
|
for _, r := range []io.Reader{
|
|
// implements io.ByteReader
|
|
bytes.NewReader(buf),
|
|
|
|
// tiny reads, no io.ByteReader
|
|
iotest.OneByteReader(bytes.NewReader(buf)),
|
|
} {
|
|
cur = 0
|
|
for _, expc := range cids {
|
|
n, c, err := CidFromReader(r)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
if c != expc {
|
|
t.Fatal("cids mismatched")
|
|
}
|
|
cur += n
|
|
}
|
|
if cur != len(buf) {
|
|
t.Fatal("had trailing bytes")
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestBadCidInput(t *testing.T) {
|
|
for _, name := range []string{
|
|
"FromBytes",
|
|
"FromReader",
|
|
} {
|
|
t.Run(name, func(t *testing.T) {
|
|
usingReader := name == "FromReader"
|
|
|
|
fromBytes := CidFromBytes
|
|
if usingReader {
|
|
fromBytes = func(data []byte) (int, Cid, error) {
|
|
return CidFromReader(bytes.NewReader(data))
|
|
}
|
|
}
|
|
|
|
l, c, err := fromBytes([]byte{mh.SHA2_256, 32, 0x00})
|
|
if err == nil {
|
|
t.Fatal("expected not-enough-bytes for V0 CID")
|
|
}
|
|
if !usingReader && l != 0 {
|
|
t.Fatal("expected length==0 from bad CID")
|
|
} else if usingReader && l == 0 {
|
|
t.Fatal("expected length!=0 from bad CID")
|
|
}
|
|
if c != Undef {
|
|
t.Fatal("expected Undef CID from bad CID")
|
|
}
|
|
|
|
c, err = Decode("bafkreie5qrjvaw64n4tjm6hbnm7fnqvcssfed4whsjqxzslbd3jwhsk3mm")
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
byts := make([]byte, c.ByteLen())
|
|
copy(byts, c.Bytes())
|
|
byts[1] = 0x80 // bad codec varint
|
|
byts[2] = 0x00
|
|
l, c, err = fromBytes(byts)
|
|
if err == nil {
|
|
t.Fatal("expected not-enough-bytes for V1 CID")
|
|
}
|
|
if !usingReader && l != 0 {
|
|
t.Fatal("expected length==0 from bad CID")
|
|
} else if usingReader && l == 0 {
|
|
t.Fatal("expected length!=0 from bad CID")
|
|
}
|
|
if c != Undef {
|
|
t.Fatal("expected Undef CID from bad CID")
|
|
}
|
|
|
|
copy(byts, c.Bytes())
|
|
byts[2] = 0x80 // bad multihash varint
|
|
byts[3] = 0x00
|
|
l, c, err = fromBytes(byts)
|
|
if err == nil {
|
|
t.Fatal("expected not-enough-bytes for V1 CID")
|
|
}
|
|
if !usingReader && l != 0 {
|
|
t.Fatal("expected length==0 from bad CID")
|
|
} else if usingReader && l == 0 {
|
|
t.Fatal("expected length!=0 from bad CID")
|
|
}
|
|
if c != Undef {
|
|
t.Fatal("expected Undef CID from bad CidFromBytes")
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
func TestBadParse(t *testing.T) {
|
|
hash, err := mh.Sum([]byte("foobar"), mh.SHA3_256, -1)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
_, err = Parse(hash)
|
|
if err == nil {
|
|
t.Fatal("expected to fail to parse an invalid CIDv1 CID")
|
|
}
|
|
}
|
|
|
|
func TestLoggable(t *testing.T) {
|
|
c, err := Decode("bafkreie5qrjvaw64n4tjm6hbnm7fnqvcssfed4whsjqxzslbd3jwhsk3mm")
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
actual := c.Loggable()
|
|
expected := make(map[string]interface{})
|
|
expected["cid"] = c
|
|
if !reflect.DeepEqual(actual, expected) {
|
|
t.Fatalf("did not get expected loggable form (got %v)", actual)
|
|
}
|
|
}
|