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feat: improve the verification message
Signed-off-by: Batuhan Apaydın <batuhan.apaydin@trendyol.com>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,145 @@ | ||
| package verify | ||
|
|
||
| import ( | ||
| "bytes" | ||
| "crypto" | ||
| "crypto/rand" | ||
| "crypto/sha256" | ||
| "crypto/x509" | ||
| "crypto/x509/pkix" | ||
| "encoding/asn1" | ||
| "encoding/base64" | ||
| "encoding/json" | ||
| "encoding/pem" | ||
| "fmt" | ||
| "github.com/google/go-containerregistry/pkg/name" | ||
| "github.com/sigstore/cosign/pkg/oci" | ||
| "github.com/sigstore/cosign/pkg/oci/static" | ||
| "github.com/sigstore/cosign/test" | ||
| "github.com/sigstore/sigstore/pkg/signature/payload" | ||
| "github.com/stretchr/testify/assert" | ||
| "io" | ||
| "log" | ||
| "os" | ||
| "sync" | ||
| "testing" | ||
| ) | ||
|
|
||
| func TestPrintVerification(t *testing.T) { | ||
| wantPayload := ` | ||
| [ | ||
| { | ||
| "critical": { | ||
| "identity": { | ||
| "docker-reference": "gcr.io/baz/baz" | ||
| }, | ||
| "image": { | ||
| "docker-manifest-digest": "sha256:e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855" | ||
| }, | ||
| "type": "cosign container image signature" | ||
| }, | ||
| "optional": { | ||
| "1.3.6.1.4.1.57264.1.1": "oidc-issuer", | ||
| "1.3.6.1.4.1.57264.1.2": "myWorkflowTrigger", | ||
| "1.3.6.1.4.1.57264.1.3": "myWorkflowSha", | ||
| "1.3.6.1.4.1.57264.1.4": "myWorkflowName", | ||
| "1.3.6.1.4.1.57264.1.5": "myWorkflowRepository", | ||
| "1.3.6.1.4.1.57264.1.6": "myWorkflowRef", | ||
| "Issuer": "oidc-issuer", | ||
| "Subject": "subject", | ||
| "githubWorkflowName": "myWorkflowName", | ||
| "githubWorkflowRef": "myWorkflowRef", | ||
| "githubWorkflowRepository": "myWorkflowRepository", | ||
| "githubWorkflowSha": "myWorkflowSha", | ||
| "githubWorkflowTrigger": "myWorkflowTrigger" | ||
| } | ||
| } | ||
| ] | ||
| ` | ||
| eexts := []pkix.Extension{ | ||
| {Id: asn1.ObjectIdentifier{1, 3, 6, 1, 4, 1, 57264, 1, 2}, Value: []byte("myWorkflowTrigger")}, | ||
| {Id: asn1.ObjectIdentifier{1, 3, 6, 1, 4, 1, 57264, 1, 3}, Value: []byte("myWorkflowSha")}, | ||
| {Id: asn1.ObjectIdentifier{1, 3, 6, 1, 4, 1, 57264, 1, 4}, Value: []byte("myWorkflowName")}, | ||
| {Id: asn1.ObjectIdentifier{1, 3, 6, 1, 4, 1, 57264, 1, 5}, Value: []byte("myWorkflowRepository")}, | ||
| {Id: asn1.ObjectIdentifier{1, 3, 6, 1, 4, 1, 57264, 1, 6}, Value: []byte("myWorkflowRef")}, | ||
| } | ||
| rootCert, rootKey, _ := test.GenerateRootCa() | ||
| subCert, subKey, _ := test.GenerateSubordinateCa(rootCert, rootKey) | ||
| leafCert, privKey, _ := test.GenerateLeafCert("subject", "oidc-issuer", subCert, subKey, eexts...) | ||
| pemRoot := pem.EncodeToMemory(&pem.Block{Type: "CERTIFICATE", Bytes: rootCert.Raw}) | ||
| pemSub := pem.EncodeToMemory(&pem.Block{Type: "CERTIFICATE", Bytes: subCert.Raw}) | ||
| pemLeaf := pem.EncodeToMemory(&pem.Block{Type: "CERTIFICATE", Bytes: leafCert.Raw}) | ||
|
|
||
| rootPool := x509.NewCertPool() | ||
| rootPool.AddCert(rootCert) | ||
|
|
||
| // Generate the payload for the image, and check the digest. | ||
| b := bytes.Buffer{} | ||
| dig3, err := name.NewDigest("gcr.io/baz/baz@sha256:e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855", name.StrictValidation) | ||
| if err != nil { | ||
| t.Fatalf("Error creating test dig3.") | ||
| } | ||
| pp, err := (&payload.Cosign{Image: dig3, Annotations: map[string]interface{}{}}).MarshalJSON() | ||
| if err != nil { | ||
| t.Fatalf("Error creating cosign payload") | ||
| } | ||
| fmt.Fprintln(&b, string(pp)) | ||
|
|
||
| p := b.Bytes() | ||
| h := sha256.Sum256(p) | ||
| signature, _ := privKey.Sign(rand.Reader, h[:], crypto.SHA256) | ||
|
|
||
| ociSig, _ := static.NewSignature(p, | ||
| base64.StdEncoding.EncodeToString(signature), | ||
| static.WithCertChain(pemLeaf, appendSlices([][]byte{pemSub, pemRoot}))) | ||
|
|
||
| captureOutput := func(imgRef string, sigs []oci.Signature, output string, f func(string, []oci.Signature, string)) string { | ||
| reader, writer, err := os.Pipe() | ||
| if err != nil { | ||
| panic(err) | ||
| } | ||
| stdout := os.Stdout | ||
| stderr := os.Stderr | ||
| defer func() { | ||
| os.Stdout = stdout | ||
| os.Stderr = stderr | ||
| log.SetOutput(os.Stderr) | ||
| }() | ||
| os.Stdout = writer | ||
| os.Stderr = writer | ||
| log.SetOutput(writer) | ||
| out := make(chan string) | ||
| wg := new(sync.WaitGroup) | ||
| wg.Add(1) | ||
| go func() { | ||
| var buf bytes.Buffer | ||
| wg.Done() | ||
| io.Copy(&buf, reader) | ||
| out <- buf.String() | ||
| }() | ||
| wg.Wait() | ||
| f(imgRef, sigs, output) | ||
| writer.Close() | ||
| return <-out | ||
| } | ||
|
|
||
| out := captureOutput("", []oci.Signature{ociSig}, "json", PrintVerification) | ||
| prettyPrint := func(b []byte) ([]byte, error) { | ||
| var out bytes.Buffer | ||
| err := json.Indent(&out, b, "", " ") | ||
| return out.Bytes(), err | ||
| } | ||
| i, err := prettyPrint([]byte(out)) | ||
| if err != nil { | ||
| t.Fatal(err.Error()) | ||
| } | ||
| assert.JSONEq(t, wantPayload, string(i)) | ||
| } | ||
|
|
||
| func appendSlices(slices [][]byte) []byte { | ||
| var tmp []byte | ||
| for _, s := range slices { | ||
| tmp = append(tmp, s...) | ||
| } | ||
| return tmp | ||
| } |
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