/**
 * @kind path-problem
 */

import csharp
import semmle.code.csharp.dataflow.internal.ExternalFlow
import utils.test.ProvenancePathGraph::ShowProvenance<Taint::PathNode, Taint::PathGraph>
import ModelValidation

module TaintConfig implements DataFlow::ConfigSig {
  predicate isSource(DataFlow::Node src) { src.asExpr() instanceof ObjectCreation }

  predicate isSink(DataFlow::Node sink) {
    exists(MethodCall mc |
      mc.getTarget().hasName("Sink") and
      mc.getAnArgument() = sink.asExpr()
    )
  }
}

module Taint = TaintTracking::Global<TaintConfig>;

from Taint::PathNode source, Taint::PathNode sink
where Taint::flowPath(source, sink)
select sink, source, sink, "$@", source, source.toString()