Test streamWrapper extract (issue #24)

src/PhpZip/Stream/ZipInputStream.php

@@ -483,6 +483,14 @@ public function readEntryContent(ZipEntry $entry)
                 throw new ZipUnsupportMethodException($entry->getName() .
                     " (compression method " . $method . " is not supported)");
         }
+
+        if ($content === false) {
+            throw new ZipException(sprintf(
+                'Failed to get the contents of the zip entry "%s"',
+                $entry->getName()
+            ));
+        }
+
         if (!$skipCheckCrc) {
             $localCrc = crc32($content);
             $localCrc = PHP_INT_SIZE === 4 ? sprintf('%u', $localCrc) : $localCrc;

tests/PhpZip/Issue24Test.php

@@ -0,0 +1,104 @@
+<?php
+
+namespace PhpZip;
+
+use PhpZip\Exception\ZipException;
+use PhpZip\Util\CryptoUtil;
+
+class Issue24Test extends ZipTestCase
+{
+    /**
+     * This method is called before the first test of this test class is run.
+     */
+    public static function setUpBeforeClass()
+    {
+        stream_wrapper_register("dummyfs", DummyFileSystemStream::class);
+    }
+
+    /**
+     * @throws ZipException
+     */
+    public function testDummyFS()
+    {
+        $fileContents = str_repeat(base64_encode(CryptoUtil::randomBytes(12000)), 100);
+
+        // create zip file
+        $zip = new ZipFile();
+        $zip->addFromString(
+            'file.txt',
+            $fileContents,
+            ZipFile::METHOD_DEFLATED
+        );
+        $zip->saveAsFile($this->outputFilename);
+        $zip->close();
+
+        $this->assertCorrectZipArchive($this->outputFilename);
+
+        $stream = fopen('dummyfs://localhost/' . $this->outputFilename, 'rb');
+        $this->assertNotFalse($stream);
+        $zip->openFromStream($stream);
+        $this->assertEquals($zip->getListFiles(), ['file.txt']);
+        $this->assertEquals($zip['file.txt'], $fileContents);
+        $zip->close();
+    }
+}
+
+/**
+ * Try to load using dummy stream
+ */
+class DummyFileSystemStream
+{
+    /**
+     * @var resource
+     */
+    private $fp;
+
+    function stream_open($path, $mode, $options, &$opened_path)
+    {
+//        echo "DummyFileSystemStream->stream_open($path, $mode, $options)" . PHP_EOL;
+
+        $parsedUrl = parse_url($path);
+        $path = $parsedUrl['path'];
+        $this->fp = fopen($path, $mode);
+
+        return true;
+    }
+
+    function stream_read($count)
+    {
+//        echo "DummyFileSystemStream->stream_read($count)" . PHP_EOL;
+        $position = ftell($this->fp);
+
+//        echo "Loading chunk " . $position . " to " . ($position + $count - 1) . PHP_EOL;
+        $ret = fread($this->fp, $count);
+
+//        echo "String length: " . strlen($ret) . PHP_EOL;
+
+        return $ret;
+    }
+
+    function stream_tell()
+    {
+//        echo "DummyFileSystemStream->stream_tell()" . PHP_EOL;
+        return ftell($this->fp);
+    }
+
+    function stream_eof()
+    {
+//        echo "DummyFileSystemStream->stream_eof()" . PHP_EOL;
+        $isfeof = feof($this->fp);
+        return $isfeof;
+    }
+
+    function stream_seek($offset, $whence)
+    {
+//        echo "DummyFileSystemStream->stream_seek($offset, $whence)" . PHP_EOL;
+        fseek($this->fp, $offset, $whence);
+    }
+
+    function stream_stat()
+    {
+//        echo "DummyFileSystemStream->stream_stat()" . PHP_EOL;
+        return fstat($this->fp);
+    }
+}