PDF file produced by scripts/pdf-report.gmp can not be opened successly

famasc · December 16, 2019, 2:56pm

So, there was probably a parsing issue going on.

Firstly I temporarily saved the XML response and removed all nodes from <report> but the text node. Parsing of this modified XML worked fine with the pdf-report.gmp code.

But instead of removing nodes I applied the solution suggested from @gormami posted in:

To achieve this, the codeline of pdf-report.gmp

github.com

greenbone/gvm-tools/blob/07ee3ccdab30115df2353a392d140dfc87c53c3f/scripts/pdf-report.gmp#L61


      
              pdf_filename = args.argv[1] + ".pdf"
          
          pdf_report_format_id = "c402cc3e-b531-11e1-9163-406186ea4fc5"
          
          response = gmp.get_report(
              report_id=report_id, report_format_id=pdf_report_format_id
          )
          
          report_element = response[0]
          # get the full content of the report element
          content = "".join(report_element.itertext())
          
          # convert content to 8-bit ASCII bytes
          binary_base64_encoded_pdf = content.encode('ascii')
          
          # decode base64
          binary_pdf = b64decode(binary_base64_encoded_pdf)
          
          # write to file and support ~ in filename path
          pdf_path = Path(pdf_filename).expanduser()

had to be rewritten as follows:

import re
from lxml import etree

# get the content of the report element
report = report_response[0]
report = etree.tostring(report).decode('ascii')
report = re.sub('</report_format>', '</report_format><value>', report)
report = re.sub('</report>', '</value></report>', report)
report = etree.fromstring(report)
content = report.xpath('value')[0].text

In my case, this results in a correct PDF report. Of course, this is just a workaround. But obviously there are some parser which cannot handle the XML structure of <report>. So maybe an adjustment should be considered.