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// Copyright 2018 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 main
import (
"errors"
"fmt"
"os"
"strings"
"github.com/mendersoftware/mender-artifact/artifact"
"github.com/mendersoftware/mender-artifact/awriter"
"github.com/mendersoftware/mender-artifact/handlers"
"github.com/urfave/cli"
)
func validateInput(c *cli.Context) error {
if len(c.StringSlice("device-type")) == 0 ||
len(c.String("artifact-name")) == 0 ||
len(c.String("update")) == 0 {
return cli.NewExitError(
"must provide `device-type`, `artifact-name` and `update`",
errArtifactInvalidParameters,
)
}
if len(strings.Fields(c.String("artifact-name"))) > 1 {
// check for whitespace in artifact-name
return cli.NewExitError(
"whitespace is not allowed in the artifact-name",
errArtifactInvalidParameters,
)
}
return nil
}
func writeRootfs(c *cli.Context) error {
if err := validateInput(c); err != nil {
Log.Error(err.Error())
return err
}
// set the default name
name := "artifact.mender"
if len(c.String("output-path")) > 0 {
name = c.String("output-path")
}
version := c.Int("version")
Log.Debugf("creating arifact [%s], version: %d", name, version)
var h *handlers.Rootfs
switch version {
case 1:
h = handlers.NewRootfsV1(c.String("update"))
case 2:
h = handlers.NewRootfsV2(c.String("update"))
default:
return cli.NewExitError(
fmt.Sprintf("unsupported artifact version: %v", version),
errArtifactUnsupportedVersion,
)
}
upd := &awriter.Updates{
U: []handlers.Composer{h},
}
f, err := os.Create(name + ".tmp")
if err != nil {
return cli.NewExitError("can not create artifact file", errArtifactCreate)
}
defer func() {
f.Close()
// in case of success `.tmp` suffix will be removed and below
// will not remove valid artifact
os.Remove(name + ".tmp")
}()
aw, err := artifactWriter(f, c.String("key"), version)
if err != nil {
return cli.NewExitError(err.Error(), 1)
}
scr, err := scripts(c.StringSlice("script"))
if err != nil {
return cli.NewExitError(err.Error(), 1)
} else if len(scr.Get()) != 0 && version == 1 {
// check if we are having correct version
return cli.NewExitError("can not use scripts artifact with version 1", 1)
}
err = aw.WriteArtifact("mender", version,
c.StringSlice("device-type"), c.String("artifact-name"), upd, scr)
if err != nil {
return cli.NewExitError(err.Error(), 1)
}
f.Close()
err = os.Rename(name+".tmp", name)
if err != nil {
return cli.NewExitError(err.Error(), 1)
}
return nil
}
func artifactWriter(f *os.File, key string,
ver int) (*awriter.Writer, error) {
if key != "" {
if ver == 0 {
// check if we are having correct version
return nil, errors.New("can not use signed artifact with version 0")
}
privateKey, err := getKey(key)
if err != nil {
return nil, err
}
return awriter.NewWriterSigned(f, artifact.NewSigner(privateKey)), nil
}
return awriter.NewWriter(f), nil
}
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