Monday, November 6, 2017

GIT: Pushing a remote branch with a different local branch name


Usually, when you are pushing like git push origin master, your remote branch name and local branch is same i.e, master

But if you're having a different branch name locally for your remote branch 'master


$ git push origin localbranchName:remotebranchName


example: git push origin testlocal:master

Tuesday, September 19, 2017

Git force merge

Here is my scenario - I've development and release branches. And I want to merge my changes from development to release branch and if any conflicts during merge and I want to overwrite with the development branch changes.

$ git checkout release  => switch from development to release branch
$ git merge -X theirs development  => merge changes from development to release branch


Understand more about it here - https://stackoverflow.com/questions/40517129/git-merge-with-force-overwrite





Tuesday, August 8, 2017

Showing progress dialog using Eclipse jobs API

Below piece of code shows how can we run the eclipse jobs interactively by showing eclipse progress dialog using Eclipse Jobs API.

Job installationJob = new Job("Creating a new creating catalog...")
{
@Override
public IStatus run(IProgressMonitor monitor)
{
try
{
monitor.beginTask("creating catalog...", 10);
//do your task here
}
finally
{

monitor.done();
}
return Status.OK_STATUS;
}
};

installationJob.setPriority(Job.INTERACTIVE);

//This is alternative to the installationJob.setUser(true);
//sometimes setUser(true) doesn't show up the progress dialog, in those cases below piece of code can be used.

PlatformUI.getWorkbench().getProgressService()
.showInDialog(Display.getDefault().getActiveShell(), installationJob);

installationJob.schedule();

Sunday, August 6, 2017

XML external injection resolutions

https://www.owasp.org/index.php/XML_External_Entity_(XXE)_Prevention_Cheat_Sheet
http://www.gonandy.com/2016/12/xxe-injection/

DocumentBuilderFactory

StAX and XMLInputFactory

StAX parsers such as XMLInputFactory allow various properties and features to be set.
To protect a Java XMLInputFactory from XXE, do this:
  • xmlInputFactory.setProperty(XMLInputFactory.SUPPORT_DTD, false); // This disables DTDs entirely for that factory
  • xmlInputFactory.setProperty(“javax.xml.stream.isSupportingExternalEntities”, false); // disable external entities

TransformerFactory(JDK7)

To protect a Java TransformerFactory from XXE, do this:
  • TransformerFactory tf = TransformerFactory.newInstance();
  • tf.setAttribute(XMLConstants.ACCESS_EXTERNAL_DTD, “”);
  • tf.setAttribute(XMLConstants.ACCESS_EXTERNAL_STYLESHEET, “”);
  • tf.setFeature(XMLConstants.FEATURE_SECURE_PROCESSING,true);

Validator

To protect a Java Validator from XXE, do this:
  • SchemaFactory factory = SchemaFactory.newInstance(“http://www.w3.org/2001/XMLSchema“);
  • Schema schema = factory.newSchema();
  • Validator validator = schema.newValidator();
  • validator.setProperty(XMLConstants.ACCESS_EXTERNAL_DTD, “”);
  • validator.setProperty(XMLConstants.ACCESS_EXTERNAL_SCHEMA, “”);

SchemaFactory

To protect a SchemaFactory from XXE, do this:
  • SchemaFactory factory = SchemaFactory.newInstance(“http://www.w3.org/2001/XMLSchema“);
  • factory.setProperty(XMLConstants.ACCESS_EXTERNAL_DTD, “”);
  • factory.setProperty(XMLConstants.ACCESS_EXTERNAL_SCHEMA, “”);
  • Schema schema = factory.newSchema(Source);

SAXTransformerFactory

To protect a Java SAXTransformerFactory from XXE, do this:
  • SAXTransformerFactory sf = SAXTransformerFactory.newInstance();
  • sf.setAttribute(XMLConstants.ACCESS_EXTERNAL_DTD, “”);
  • sf.setAttribute(XMLConstants.ACCESS_EXTERNAL_STYLESHEET, “”);
  • sf.newXMLFilter(Source);

XMLReader

To protect a Java XMLReader from XXE, do this:

Unmarshaller

Since an Unmarshaller parses XML and does not support any flags for disabling XXE, it’s imperative to parse the untrusted XML through a configurable secure parser first, generate a Source object as a result, and pass the source object to the Unmarshaller. For example:
  • Source xmlSource = new SAXSource(spf.newSAXParser().getXMLReader(), new InputSource(new StringReader(xml)));
  • JAXBContext jc = JAXBContext.newInstance(Object.class);
  • Unmarshaller um = jc.createUnmarshaller();
  • um.unmarshal(xmlSource);

XPathExpression

An XPathExpression is similar to an Unmarshaller where it can’t be configured securely by itself, so the untrusted data must be parsed through another securable XML parser first. For example:
  • DocumentBuilderFactory df =DocumentBuilderFactory.newInstance();
  • df.setAttribute(XMLConstants.ACCESS_EXTERNAL_DTD, “”);
  • df.setAttribute(XMLConstants.ACCESS_EXTERNAL_SCHEMA, “”);
  • builder = df.newDocumentBuilder();
  • xPathExpression.evaluate( builder.parse(new ByteArrayInputStream(xml.getBytes())) );