bug #11079 Response::isNotModified returns true when If-Modified-Since is later than Last-Modified (skolodyazhnyy)
This PR was submitted for the master branch but it was merged into the 2.3 branch instead (closes #11079).
Discussion
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Response::isNotModified returns true when If-Modified-Since is later than Last-Modified
| Q | A
| ------------- | ---
| Bug fix? | yes
| New feature? | no
| BC breaks? | no
| Deprecations? | no
| Tests pass? | yes
| Fixed tickets | #10501, #10857
| License | MIT
| Doc PR |
Patch for #10501. I have reworked a bit `Response::isNotModified` method to make it more readable. Now it's comparing If-Modified-Since and Last-Modified as dates.
Commits
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42ec76e
Response::isNotModified returns true when If-Modified-Since is later than Last-Modified
This commit is contained in:
commit
3d11433950
@ -1033,12 +1033,16 @@ class Response
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return false;
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return false;
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}
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}
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$lastModified = $request->headers->get('If-Modified-Since');
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$notModified = false;
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$notModified = false;
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$lastModified = $this->headers->get('Last-Modified');
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$modifiedSince = $request->headers->get('If-Modified-Since');
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if ($etags = $request->getEtags()) {
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if ($etags = $request->getEtags()) {
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$notModified = (in_array($this->getEtag(), $etags) || in_array('*', $etags)) && (!$lastModified || $this->headers->get('Last-Modified') == $lastModified);
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$notModified = in_array($this->getEtag(), $etags) || in_array('*', $etags);
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} elseif ($lastModified) {
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}
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$notModified = $lastModified == $this->headers->get('Last-Modified');
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if ($modifiedSince && $lastModified) {
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$notModified = strtotime($modifiedSince) >= strtotime($lastModified) && (!$etags || $notModified);
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}
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}
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if ($notModified) {
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if ($notModified) {
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@ -118,6 +118,102 @@ class ResponseTest extends ResponseTestCase
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$this->assertFalse($modified);
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$this->assertFalse($modified);
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}
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}
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public function testIsNotModifiedNotSafe()
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{
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$request = Request::create('/homepage', 'POST');
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$response = new Response();
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$this->assertFalse($response->isNotModified($request));
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}
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public function testIsNotModifiedLastModified()
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{
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$before = 'Sun, 25 Aug 2013 18:32:31 GMT';
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$modified = 'Sun, 25 Aug 2013 18:33:31 GMT';
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$after = 'Sun, 25 Aug 2013 19:33:31 GMT';
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$request = new Request();
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$request->headers->set('If-Modified-Since', $modified);
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$response = new Response();
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$response->headers->set('Last-Modified', $modified);
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$this->assertTrue($response->isNotModified($request));
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$response->headers->set('Last-Modified', $before);
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$this->assertTrue($response->isNotModified($request));
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$response->headers->set('Last-Modified', $after);
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$this->assertFalse($response->isNotModified($request));
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$response->headers->set('Last-Modified', '');
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$this->assertFalse($response->isNotModified($request));
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}
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public function testIsNotModifiedEtag()
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{
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$etagOne = 'randomly_generated_etag';
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$etagTwo = 'randomly_generated_etag_2';
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$request = new Request();
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$request->headers->set('if_none_match', sprintf('%s, %s, %s', $etagOne, $etagTwo, 'etagThree'));
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$response = new Response();
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$response->headers->set('ETag', $etagOne);
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$this->assertTrue($response->isNotModified($request));
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$response->headers->set('ETag', $etagTwo);
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$this->assertTrue($response->isNotModified($request));
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$response->headers->set('ETag', '');
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$this->assertFalse($response->isNotModified($request));
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}
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public function testIsNotModifiedLastModifiedAndEtag()
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{
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$before = 'Sun, 25 Aug 2013 18:32:31 GMT';
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$modified = 'Sun, 25 Aug 2013 18:33:31 GMT';
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$after = 'Sun, 25 Aug 2013 19:33:31 GMT';
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$etag = 'randomly_generated_etag';
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$request = new Request();
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$request->headers->set('if_none_match', sprintf('%s, %s', $etag, 'etagThree'));
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$request->headers->set('If-Modified-Since', $modified);
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$response = new Response();
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$response->headers->set('ETag', $etag);
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$response->headers->set('Last-Modified', $after);
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$this->assertFalse($response->isNotModified($request));
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$response->headers->set('ETag', 'non-existent-etag');
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$response->headers->set('Last-Modified', $before);
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$this->assertFalse($response->isNotModified($request));
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$response->headers->set('ETag', $etag);
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$response->headers->set('Last-Modified', $modified);
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$this->assertTrue($response->isNotModified($request));
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}
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public function testIsNotModifiedIfModifiedSinceAndEtagWithoutLastModified()
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{
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$modified = 'Sun, 25 Aug 2013 18:33:31 GMT';
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$etag = 'randomly_generated_etag';
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$request = new Request();
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$request->headers->set('if_none_match', sprintf('%s, %s', $etag, 'etagThree'));
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$request->headers->set('If-Modified-Since', $modified);
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$response = new Response();
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$response->headers->set('ETag', $etag);
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$this->assertTrue($response->isNotModified($request));
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$response->headers->set('ETag', 'non-existent-etag');
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$this->assertFalse($response->isNotModified($request));
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}
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public function testIsValidateable()
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public function testIsValidateable()
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{
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{
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$response = new Response('', 200, array('Last-Modified' => $this->createDateTimeOneHourAgo()->format(DATE_RFC2822)));
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$response = new Response('', 200, array('Last-Modified' => $this->createDateTimeOneHourAgo()->format(DATE_RFC2822)));
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