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// Copyright 2017 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 handlers
import (
"bytes"
"io"
"io/ioutil"
"os"
"path/filepath"
"strings"
"github.com/mendersoftware/mender-artifact/artifact"
"github.com/pkg/errors"
)
type Generic struct {
updateType string
files map[string](*DataFile)
}
func NewGeneric(t string) *Generic {
return &Generic{
updateType: t,
files: make(map[string](*DataFile)),
}
}
func (g *Generic) GetUpdateFiles() [](*DataFile) {
list := make([](*DataFile), len(g.files))
i := 0
for _, f := range g.files {
list[i] = f
i++
}
return list
}
func (g *Generic) GetType() string {
return g.updateType
}
// Copy is implemented only to satisfy Installer interface.
// Generic parser is not supposed to be copied.
func (g *Generic) Copy() Installer {
return nil
}
func stripSum(path string) string {
bName := filepath.Base(path)
return strings.TrimSuffix(bName, filepath.Ext(bName))
}
func (g *Generic) ReadHeader(r io.Reader, path string) error {
switch {
case filepath.Base(path) == "files":
files, err := parseFiles(r)
if err != nil {
return err
}
for _, f := range files.FileList {
g.files[filepath.Base(f)] = &DataFile{
Name: f,
}
}
case match(artifact.HeaderDirectory+"/*/checksums/*", path):
buf := bytes.NewBuffer(nil)
if _, err := io.Copy(buf, r); err != nil {
return errors.Wrapf(err, "update: error reading checksum")
}
key := stripSum(path)
if _, ok := g.files[key]; !ok {
return errors.Errorf("generic handler: can not find data file: %v", key)
}
g.files[key].Checksum = buf.Bytes()
case filepath.Base(path) == "type-info",
filepath.Base(path) == "meta-data",
match(artifact.HeaderDirectory+"/*/signatures/*", path),
match(artifact.HeaderDirectory+"/*/scripts/pre/*", path),
match(artifact.HeaderDirectory+"/*/scripts/post/*", path),
match(artifact.HeaderDirectory+"/*/scripts/check/*", path):
// TODO: implement when needed
default:
return errors.Errorf("update: unsupported file: %v", path)
}
return nil
}
func (g *Generic) Install(r io.Reader, info *os.FileInfo) error {
_, err := io.Copy(ioutil.Discard, r)
return err
}
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