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// Copyright 2021 Northern.tech AS
//
// 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 cli
import (
"fmt"
"io"
"os"
"github.com/pkg/errors"
"github.com/urfave/cli"
"github.com/mendersoftware/mender-artifact/areader"
"github.com/mendersoftware/mender-artifact/artifact"
)
func validate(art io.Reader, key artifact.Verifier) error {
// do not return error immediately if we can not validate signature;
// just continue checking consistency and return info if
// signature verification failed
var validationError error
ar := areader.NewReader(art)
ar.VerifySignatureCallback = func(message, sig []byte) error {
if key == nil {
return nil
}
if key != nil {
if err := key.Verify(message, sig); err != nil {
validationError = err
}
}
return nil
}
if err := ar.ReadArtifact(); err != nil {
return err
}
if validationError != nil {
return validationError
}
if key != nil && !ar.IsSigned {
return errors.New("missing signature")
}
if key == nil && ar.IsSigned {
return errors.New("missing verifier")
}
return nil
}
func validateArtifact(c *cli.Context) error {
if c.NArg() == 0 {
return cli.NewExitError("Nothing specified, nothing validated. \nMaybe you wanted"+
" to say 'artifacts validate <pathspec>'?", errArtifactInvalidParameters)
}
key, err := getKey(c)
if err != nil {
return cli.NewExitError(err.Error(), errArtifactInvalidParameters)
}
art, err := os.Open(c.Args().First())
if err != nil {
return cli.NewExitError("Can not open artifact: "+err.Error(), errArtifactOpen)
}
defer art.Close()
if err := validate(art, key); err != nil {
return cli.NewExitError(err.Error(), errArtifactInvalid)
}
fmt.Printf("Artifact file '%s' validated successfully\n", c.Args().First())
return nil
}
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