Merge branch 'fix/empty-data-logretrieval' into 'develop'

fix: Fix error on logretrieval empty data

See merge request prey/js/prey-node-client!1229

Author: Claudio

lib/agent/actions/logretrieval/index.js

@@ -82,19 +82,28 @@ exports.collectFiles = (outputFile, cb) => {
       return;
     }
     array.push((callback) => {
-      let fileData;
+      let fileData = '';
       const rs = fs.createReadStream(file.path);
       rs.on('error', () => {
         callback();
       });
 
       rs.on('data', (data) => {
-        if (fileData) fileData = fileData.toString().concat(data);
-        else fileData = data;
+        try {
+          if (!data) logger.info(`There was an error reading file ${file.name}: no data`);
+          if (fileData) fileData = fileData.toString().concat(data);
+          else fileData = data;
+        } catch (error) {
+          logger.info(`There was an error reading file ${file.name}: ${error}`);
+        }
       });
 
       rs.on('close', () => {
-        archive.append(fileData, { name: file.name });
+        try {
+          archive.append(fileData || '', { name: file.name });
+        } catch (error) {
+          logger.info(`There was an error appending file ${file.name} to archive: ${error}`);
+        }
         callback();
       });
     });