Allow SVG in jury test case visualization

Author: Kevinjil

webapp/src/Controller/Jury/ProblemController.php

@@ -605,16 +605,26 @@ public function testcasesAction(Request $request, int $probId): Response
                         }
                         $content = file_get_contents($file->getRealPath());
                         if ($type === 'image') {
-                            $imageType = Utils::getImageType($content, $error);
-                            if ($imageType === false) {
-                                $this->addFlash('danger', sprintf('image: %s', $error));
-                                return $this->redirectToRoute('jury_problem_testcases', ['probId' => $probId]);
-                            }
-                            $thumb = Utils::getImageThumb($content, $thumbnailSize,
-                                                          $this->dj->getDomjudgeTmpDir(), $error);
-                            if ($thumb === false) {
-                                $this->addFlash('danger', sprintf('image: %s', $error));
-                                return $this->redirectToRoute('jury_problem_testcases', ['probId' => $probId]);
+                            if (mime_content_type($file->getRealPath()) === 'image/svg+xml') {
+                                $content = Utils::sanitizeSvg($content);
+                                if ($content === false) {
+                                    $this->addFlash('danger', sprintf('image: %s', $error));
+                                    return $this->redirectToRoute('jury_problem_testcases', ['probId' => $probId]);
+                                }
+                                $thumb = $content;
+                                $imageType = 'svg';
+                            } else {
+                                $imageType = Utils::getImageType($content, $error);
+                                if ($imageType === false) {
+                                    $this->addFlash('danger', sprintf('image: %s', $error));
+                                    return $this->redirectToRoute('jury_problem_testcases', ['probId' => $probId]);
+                                }
+                                $thumb = Utils::getImageThumb($content, $thumbnailSize,
+                                                            $this->dj->getDomjudgeTmpDir(), $error);
+                                if ($thumb === false) {
+                                    $this->addFlash('danger', sprintf('image: %s', $error));
+                                    return $this->redirectToRoute('jury_problem_testcases', ['probId' => $probId]);
+                                }
                             }
 
                             $testcase->setImageType($imageType);

webapp/src/Service/DOMJudgeService.php

@@ -85,6 +85,12 @@ class DOMJudgeService
         'image/svg+xml' => 'svg',
     ];
 
+    final public const EXTENSION_TO_MIMETYPE = [
+        'png' => 'image/png',
+        'jpg' => 'image/jpeg',
+        'svg' => 'image/svg+xml',
+    ];
+
     public function __construct(
         protected readonly EntityManagerInterface $em,
         protected readonly LoggerInterface $logger,

webapp/src/Service/ImportProblemService.php

@@ -427,6 +427,15 @@ public function importZippedProblem(
                         break;
                     }
                 }
+                // Handle SVG differently, as a lot of the above concepts do not make sense in this context.
+                $imageFileName = $baseFileName . '.svg';
+                if (($imageFile = $zip->getFromName($imageFileName)) !== false) {
+                    if (($imageFile = Utils::sanitizeSvg($imageFile)) === false) {
+                        $messages['warning'][] = sprintf("Contents of '%s' is not safe.", $imageFileName);
+                    }
+                    $imageType = 'svg';
+                    $imageThumb = $imageFile;
+                }
 
                 if (str_contains($testInput, "\r")) {
                     $messages['warning'][] = "Testcase file '$baseFileName.in' contains Windows newlines.";

webapp/src/Twig/TwigExtension.php

@@ -117,6 +117,7 @@ public function getFilters(): array
             new TwigFilter('entityIdBadge', $this->entityIdBadge(...), ['is_safe' => ['html']]),
             new TwigFilter('medalType', $this->awards->medalType(...)),
             new TwigFilter('numTableActions', $this->numTableActions(...)),
+            new TwigFilter('extensionToMime', $this->extensionToMime(...)),
         ];
     }
 
@@ -1346,4 +1347,9 @@ protected function numTableActions(array $tableData): int
         }
         return $maxNumActions;
     }
+
+    public function extensionToMime(string $extension): string
+    {
+        return DOMJudgeService::EXTENSION_TO_MIMETYPE[$extension];
+    }
 }

webapp/templates/jury/submission.html.twig

@@ -742,7 +742,7 @@
                         <span style="float:right; border: 3px solid #438ec3; margin: 5px; padding: 5px;">
                             {% set imgUrl = path('jury_problem_testcase_fetch', {'probId': submission.problem.probid, 'rank': run.rank, 'type': 'image'}) %}
                             <a href="{{ imgUrl }}">
-                                <img src="data:image/{{ run.imageType }};base64,{{ runsOutput[runIdx].image_thumb | base64 }}"/>
+                                <img src="data:{{ run.imageType | extensionToMime }};base64,{{ runsOutput[runIdx].image_thumb | base64 }}"/>
                             </a>
                         </span>
                     {% endif %}