Tryanks/pdfsign
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This commit is contained in:
Jeroen Bobbeldijk
2017-07-11 08:21:18 +02:00
parent db69b6a4c0
commit 7b19471330
9 changed files with 104 additions and 24 deletions
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9
sign/pdftrailer.go
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@@ -19,11 +19,18 @@ func (context *SignContext) writeTrailer() error {
new_root := "Root " + strconv.FormatInt(int64(context.CatalogData.ObjectId), 10) + " 0 R"
size_string := "Size " + strconv.FormatInt(context.PDFReader.XrefInformation.ItemCount, 10)
new_size := "Size " + strconv.FormatInt(context.PDFReader.XrefInformation.ItemCount+3, 10)
new_size := "Size " + strconv.FormatInt(context.PDFReader.XrefInformation.ItemCount+4, 10)
info := context.PDFReader.Trailer().Key("Info")
infoPtr := info.GetPtr()
info_string := "Info " + strconv.Itoa(int(infoPtr.GetID())) + " " + strconv.Itoa(int(infoPtr.GetGen())) + " R"
new_info := "Info " + strconv.FormatInt(int64(context.InfoData.ObjectId), 10) + " 0 R"
trailer_string := string(trailer_buf)
trailer_string = strings.Replace(trailer_string, root_string, new_root, -1)
trailer_string = strings.Replace(trailer_string, size_string, new_size, -1)
trailer_string = strings.Replace(trailer_string, info_string, new_info, -1)
// Write the new trailer.
if _, err := context.OutputFile.Write([]byte(trailer_string)); err != nil {