jkovalsky commented on a change in pull request #31:
URL: https://github.com/apache/netbeans-tools/pull/31#discussion_r436527261



##########
File path: pp3/module/Application/src/Application/Pp/Catalog.php
##########
@@ -120,7 +205,89 @@ public function storeXml($destinationFolder, $xml) {
         $gz =gzopen($path.'.gz', 'w9');
         gzwrite($gz, $xml);
         gzclose($gz);
-        return true;       
+        return true;
     }
 
+    /**
+     * Update the info XML for the module
+     * 
+     * @param \Application\Entity\PluginVersion $pluginVersion
+     */
+    private function updateInfoXML($pluginVersion) {
+        $sha1Reference = false;
+        $sha256Reference = false;
+
+        foreach ($pluginVersion->getDigests() as $digest) {
+            if ($digest->getAlgorithm() == 'SHA-1') {
+                $sha1Reference = $digest->getValue();
+            } else if ($digest->getAlgorithm() == 'SHA-256') {
+                $sha256Reference = $digest->getValue();
+            }
+        }
+
+        // Skip update if:
+        // - info.xml is present (PP3 assumes immutable sources)
+        // - SHA-256 checksum is present
+        // - artifact size is present
+        if($pluginVersion->getInfoXml() != null && 
$pluginVersion->getArtifactSize() && $sha256Reference) {
+            return;
+        }
+        // Fetch NBM
+        $client = new Client($pluginVersion->getUrl(), array(
+            'maxredirects' => 0,
+            'timeout' => 30
+        ));
+        $response = $client->send();
+        if ($response->isSuccess()) {
+            // Store result to file to make it processible by ZipArchive
+            $archiveFile = tempnam(sys_get_temp_dir(), "mvn-download");
+            $fid = fopen($archiveFile, "w");
+            fwrite($fid, $response->getBody());
+            fclose($fid);
+            $response = null;
+
+            $filesize = filesize($archiveFile);
+            $sha1 = hash_file("sha1", $archiveFile);
+            $sha256 = hash_file("sha256", $archiveFile);
+
+            if(strtolower($sha1) != $sha1Reference) {
+                error_log(sprintf('PluginVersion(id: %d) SHA-1 message digest 
does not match artifact. Expected: %s, Got: %s', $pluginVersion->getId(), 
$sha1Reference, $sha1));
+                return;
+            }
+
+            if(! $sha256Reference) {
+                $pluginVersion->addDigest('SHA-256', $sha256);
+            }
+
+            if(substr(strtolower($pluginVersion->getUrl()), -4) == '.jar') {
+               $execution = self::OSGI_JAR_PARSER . " " . 
escapeshellarg($archiveFile);
+               $return_var = -1;
+               $output = [];
+               exec($execution, $output, $return_var);
+               $outputString = implode("\n", $output);
+               if(intval($return_var) != 0) {
+                   error_log(sprintf('PluginVersion(id: %d) Failed to extract 
info from JAR, Got: %s', $pluginVersion->getId(), $outputString));
+                   return;
+               }
+               $infoXML = $outputString;
+            } else {
+                // Extract Info/info.xml from archive
+                $archive = new ZipArchive();

Review comment:
       BTW, we are seeing this error in the server log:
   `Error: Class 'ZipArchive' not found in 
/space/src/netbeans-tools/pp3/module/Application/src/Application/Pp/Catalog.php:275`




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