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Having predicate call external tool? #17265

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Manouchehri opened this issue Aug 20, 2024 · 1 comment
Open

Having predicate call external tool? #17265

Manouchehri opened this issue Aug 20, 2024 · 1 comment
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@Manouchehri
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Is there a way, directly or indirectly, to have a CodeQL query use an external tool?

predicate isCurrentYear(string year) {
  year = cmd("date +%Y")
}
@Manouchehri Manouchehri added the question Further information is requested label Aug 20, 2024
@aibaars
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aibaars commented Aug 21, 2024

There is no direct way. However, you can

  • define an external predicate,
  • run the command before running the query
  • save the command output in a CSV file
  • pass the flag --external=<pred>=<file.csv> when running the query
$ codeql database run-queries --help
 ...
      --external=<pred>=<file.csv>
                             A CSV file that contains rows for external predicate <pred>. Multiple --external options can be supplied.

@rvermeulen rvermeulen added awaiting-response The CodeQL team is awaiting further input or clarification from the original reporter of this issue. and removed awaiting-response The CodeQL team is awaiting further input or clarification from the original reporter of this issue. labels Aug 27, 2024
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@rvermeulen @Manouchehri @aibaars