1 files changed, 83 insertions, 0 deletions
diff --git a/vendor/github.com/coreos/ignition/config/types/verification.go b/vendor/github.com/coreos/ignition/config/types/verification.go
new file mode 100644
index 00000000..d2158b80
--- /dev/null
+++ b/vendor/github.com/coreos/ignition/config/types/verification.go
@@ -0,0 +1,83 @@
+// Copyright 2016 CoreOS, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package types
+
+import (
+	"crypto"
+	"encoding/hex"
+	"errors"
+	"strings"
+
+	"github.com/coreos/ignition/config/validate/report"
+)
+
+var (
+	ErrHashMalformed    = errors.New("malformed hash specifier")
+	ErrHashWrongSize    = errors.New("incorrect size for hash sum")
+	ErrHashUnrecognized = errors.New("unrecognized hash function")
+)
+
+// HashParts will return the sum and function (in that order) of the hash stored
+// in this Verification, or an error if there is an issue during parsing.
+func (v Verification) HashParts() (string, string, error) {
+	if v.Hash == nil {
+		// The hash can be nil
+		return "", "", nil
+	}
+	parts := strings.SplitN(*v.Hash, "-", 2)
+	if len(parts) != 2 {
+		return "", "", ErrHashMalformed
+	}
+
+	return parts[0], parts[1], nil
+}
+
+func (v Verification) Validate() report.Report {
+	r := report.Report{}
+
+	if v.Hash == nil {
+		// The hash can be nil
+		return r
+	}
+
+	function, sum, err := v.HashParts()
+	if err != nil {
+		r.Add(report.Entry{
+			Message: err.Error(),
+			Kind:    report.EntryError,
+		})
+		return r
+	}
+	var hash crypto.Hash
+	switch function {
+	case "sha512":
+		hash = crypto.SHA512
+	default:
+		r.Add(report.Entry{
+			Message: ErrHashUnrecognized.Error(),
+			Kind:    report.EntryError,
+		})
+		return r
+	}
+
+	if len(sum) != hex.EncodedLen(hash.Size()) {
+		r.Add(report.Entry{
+			Message: ErrHashWrongSize.Error(),
+			Kind:    report.EntryError,
+		})
+	}
+
+	return r
+}