Ejemplo n.º 1
0
// Load creates a Siegfried struct and loads content from path
func Load(path string) (*Siegfried, error) {
	errOpening := "siegfried: error opening signature file, got %v; try running `sf -update`"
	errNotSig := "siegfried: not a siegfried signature file; try running `sf -update`"
	errUpdateSig := "siegfried: signature file is incompatible with this version of sf; try running `sf -update`"
	fbuf, err := ioutil.ReadFile(path)
	if err != nil {
		return nil, fmt.Errorf(errOpening, err)
	}
	if len(fbuf) < len(config.Magic())+2 {
		return nil, fmt.Errorf(errNotSig)
	}
	if string(fbuf[:len(config.Magic())]) != string(config.Magic()) {
		return nil, fmt.Errorf(errNotSig)
	}
	if major, minor := fbuf[len(config.Magic())], fbuf[len(config.Magic())+1]; major < byte(config.Version()[0]) || (major == byte(config.Version()[0]) && minor < byte(config.Version()[1])) {
		return nil, fmt.Errorf(errUpdateSig)
	}
	r := bytes.NewBuffer(fbuf[len(config.Magic())+2:])
	rc := flate.NewReader(r)
	defer rc.Close()
	buf, err := ioutil.ReadAll(rc)
	if err != nil {
		return nil, fmt.Errorf(errOpening, err)
	}
	ls := persist.NewLoadSaver(buf)
	return &Siegfried{
		C:  ls.LoadTime(),
		em: extensionmatcher.Load(ls),
		cm: containermatcher.Load(ls),
		bm: bytematcher.Load(ls),
		tm: textmatcher.Load(ls),
		ids: func() []core.Identifier {
			ids := make([]core.Identifier, ls.LoadTinyUInt())
			for i := range ids {
				ids[i] = core.LoadIdentifier(ls)
			}
			return ids
		}(),
		buffers: siegreader.New(),
	}, ls.Err
}
Ejemplo n.º 2
0
// Load creates a Siegfried struct and loads content from path
func Load(path string) (*Siegfried, error) {
	errOpening := "siegfried: error opening signature file; got %v\nTry running `sf -update`"
	errNotSig := "siegfried: not a siegfried signature file"
	fbuf, err := ioutil.ReadFile(path)
	if err != nil {
		return nil, fmt.Errorf(errOpening, err)
	}
	if string(fbuf[:len(config.Magic())]) != string(config.Magic()) {
		return nil, fmt.Errorf(errNotSig)
	}
	r := bytes.NewBuffer(fbuf[len(config.Magic()):])
	rc := flate.NewReader(r)
	defer rc.Close()
	buf, err := ioutil.ReadAll(rc)
	if err != nil {
		return nil, fmt.Errorf(errOpening, err)
	}
	ls := persist.NewLoadSaver(buf)
	if ls.LoadString() != "siegfried" {
		return nil, fmt.Errorf(errNotSig)
	}
	return &Siegfried{
		C:  ls.LoadTime(),
		em: extensionmatcher.Load(ls),
		cm: containermatcher.Load(ls),
		bm: bytematcher.Load(ls),
		tm: textmatcher.Load(ls),
		ids: func() []core.Identifier {
			ids := make([]core.Identifier, ls.LoadTinyUInt())
			for i := range ids {
				ids[i] = core.LoadIdentifier(ls)
			}
			return ids
		}(),
		buffers: siegreader.New(),
	}, ls.Err
}