func NewUnsignedBList(title string) (
sList *UnsignedBList, err error) {
bList, err := xc.NewBuildList(title, 0)
if err == nil {
sList = &UnsignedBList{BuildList: *bList}
}
return
}
// Read the header part of a signed list that has been serialized in disk
// format, returning a pointer to the deserialized object or an error.
// Subclasses should call this to get a pointer to the BuildList part
// of the subclass struct. If the subclass is an XXXList, then expect
// the calling routine to be ParseXXXList()
//
func ParseUnsignedBList(in io.Reader) (uList *UnsignedBList, err error) {
var (
line []byte
title string
t xu.Timestamp // binary form
)
bin := bufio.NewReader(in)
// Read the header part -----------------------------------------
line, err = xc.NextLineWithoutCRLF(bin)
if err == nil {
title = string(line)
line, err = xc.NextLineWithoutCRLF(bin)
if err == nil {
t, err = xu.ParseTimestamp(string(line))
if err == nil {
line, err = xc.NextLineWithoutCRLF(bin)
if err == nil {
if !bytes.Equal(line, xc.CONTENT_START) {
err = xc.MissingContentStart
}
}
}
}
}
// Build and populate the SignedBList object ---------------------
if err == nil {
var bList *xc.BuildList
bList, err = xc.NewBuildList(title, t)
if err == nil {
uList = &UnsignedBList{
BuildList: *bList,
}
// Read the content lines and then any docHash line ------
err = ReadContents(bin, uList, false) // true = is signed
if err == nil {
// try to read any docHash line
var docHash []byte
line, err = xc.NextLineWithoutCRLF(bin)
if (err == nil || err == io.EOF) && (len(line) > 0) {
docHash, err = base64.StdEncoding.DecodeString(string(line))
if err == nil || err == io.EOF {
uList.setDocHash(docHash)
if err == io.EOF {
err = nil
}
}
}
}
}
}
return
}
func NewSignedBList(title string, pubkey *rsa.PublicKey) (
sList *SignedBList, err error) {
if pubkey == nil {
err = NilPublicKey
} else if title == "" {
err = NilTitle
} else {
// timestamp is set when it gets signed
bList, err := xc.NewBuildList(title, 0)
if err == nil {
sList = &SignedBList{
PubKey: pubkey,
BuildList: *bList,
}
}
}
return
}
// Read the header part of a signed list that has been serialized in disk
// format, returning a pointer to the deserialized object or an error.
// Subclasses should call this to get a pointer to the BuildList part
// of the subclass struct. If the subclass is an XXXList, then expect
// the calling routine to be ParseXXXList()
//
func ParseSignedBList(in io.Reader) (sList *SignedBList, err error) {
var (
line []byte
pubKey *rsa.PublicKey
title string
t xu.Timestamp // binary form
)
bin := bufio.NewReader(in)
// Read the header part -----------------------------------------
line, err = xc.NextLineWithoutCRLF(bin)
if err == nil {
title = string(line)
line, err = xc.NextLineWithoutCRLF(bin)
if err == nil {
t, err = xu.ParseTimestamp(string(line))
if err == nil {
line, err = xc.NextLineWithoutCRLF(bin)
if err == nil {
line = append(line, 10) // NEWLINE
pubKey, err = xc.RSAPubKeyFromDisk(line)
if err == nil {
line, err = xc.NextLineWithoutCRLF(bin)
if err == nil {
if !bytes.Equal(line, xc.CONTENT_START) {
err = xc.MissingContentStart
}
}
}
}
}
}
}
// Build and populate the SignedBList object ---------------------
if err == nil {
var bList *xc.BuildList
bList, err = xc.NewBuildList(title, t)
if err == nil {
sList = &SignedBList{
PubKey: pubKey,
BuildList: *bList,
}
// Read the content lines and then the dig sig ----------
err = ReadContents(bin, sList, true) // true = is signed
if err == nil {
// try to read the digital signature line
var digSig []byte
line, err = xc.NextLineWithoutCRLF(bin)
if err == nil || err == io.EOF {
digSig, err = base64.StdEncoding.DecodeString(string(line))
if err == nil || err == io.EOF {
sList.SetDigSig(digSig)
if err == io.EOF {
err = nil
}
}
}
}
}
}
return
}
