CSV export does not escape double quotes

[domme0711]

Describe the bug

When exporting the eventhistory as CSV: double quotes which are contained in comments are not escaped. This results in a broken CSV file which cannot be parsed properly.

To Reproduce

1. Add any comment which contains double quotes to a host or service.
2. Go to History => Event Overview
3. Export the view as CSV (/icingaweb2/monitoring/list/eventhistory?timestamp%3E=-7%20days&format=csv)

Expected behavior

Download of a properly formatted CSV file. Strings are encapsulated by double quotes. Double quotes within these strings has to be escaped.

Screenshots

Your Environment

• Icinga Web 2 version and modules (System - About): 2.11.1
• Web browser used: FF
• Icinga 2 version used (icinga2 --version): 2.13.5
• PHP version used (php --version): 7.4.6
• Server operating system and version: SLES15

[nilmerg]

Hi,

you are right, thanks for reporting!