Tryanks/pdfsign
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Add error handling for context.InputFile.Seek operation

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This commit is contained in:
Paul van Brouwershaven
2024-07-07 16:37:29 +02:00
committed by Paul van Brouwershaven
parent a0da9873d4
commit 08b31dc8f9
1 changed files with 7 additions and 2 deletions
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9
sign/pdfxref.go
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@@ -29,10 +29,15 @@ func (context *SignContext) writeXref() error {
} }
func (context *SignContext) writeXrefTable() error { func (context *SignContext) writeXrefTable() error {
// Seek to the start of the xref table
_, err := context.InputFile.Seek(context.PDFReader.XrefInformation.StartPos, 0)
if err != nil {
return fmt.Errorf("failed to seek to xref table: %w", err)
}
// Read the existing xref table // Read the existing xref table
context.InputFile.Seek(context.PDFReader.XrefInformation.StartPos, 0)
xrefContent := make([]byte, context.PDFReader.XrefInformation.Length) xrefContent := make([]byte, context.PDFReader.XrefInformation.Length)
_, err := context.InputFile.Read(xrefContent) _, err = context.InputFile.Read(xrefContent)
if err != nil { if err != nil {
return fmt.Errorf("failed to read xref table: %w", err) return fmt.Errorf("failed to read xref table: %w", err)
} }