Export custom (interactive) compare scripts when downloading problem ZIP.

Fixes #2327.

(cherry picked from commit b67412e)

Author: nickygerritsen

webapp/src/Controller/Jury/ProblemController.php

@@ -261,7 +261,10 @@ public function exportAction(int $problemId): StreamedResponse
         $yaml = ['name' => $problem->getName()];
         if (!empty($problem->getCompareExecutable())) {
             $yaml['validation'] = 'custom';
+        } elseif ($problem->getCombinedRunCompare() && !empty($problem->getRunExecutable())) {
+            $yaml['validation'] = 'custom interactive';
         }
+
         if (!empty($problem->getSpecialCompareArgs())) {
             $yaml['validator_flags'] = $problem->getSpecialCompareArgs();
         }
@@ -291,6 +294,27 @@ public function exportAction(int $problemId): StreamedResponse
                                 stream_get_contents($problem->getProblemtext()));
         }
 
+        $compareExecutable = null;
+        if ($problem->getCompareExecutable()) {
+            $compareExecutable = $problem->getCompareExecutable();
+        } elseif ($problem->getCombinedRunCompare()) {
+            $compareExecutable = $problem->getRunExecutable();
+        }
+        if ($compareExecutable) {
+            foreach ($compareExecutable->getImmutableExecutable()->getFiles() as $file) {
+                $filename = sprintf('output_validators/%s/%s', $compareExecutable->getExecid(), $file->getFilename());
+                $zip->addFromString($filename, $file->getFileContent());
+                if ($file->isExecutable()) {
+                    // 100755 = regular file, executable
+                    $zip->setExternalAttributesName(
+                        $filename,
+                        ZipArchive::OPSYS_UNIX,
+                        octdec('100755') << 16
+                    );
+                }
+            }
+        }
+
         foreach ([true, false] as $isSample) {
             /** @var Testcase[] $testcases */
             $testcases = $this->em->createQueryBuilder()