/**
 * @name Uncontrolled command line
 * @description Using externally controlled strings in a command line may allow a malicious
 *              user to change the meaning of the command.
 * @kind path-problem
 * @problem.severity error
 * @precision high
 * @id js/command-line-injection
 * @tags correctness
 *       security
 *       external/cwe/cwe-078
 *       external/cwe/cwe-088
 */

import javascript
import semmle.javascript.security.dataflow.CommandInjection::CommandInjection
import DataFlow::PathGraph

from Configuration cfg, DataFlow::PathNode source, DataFlow::PathNode sink, DataFlow::Node highlight
where cfg.hasPathFlow(source, sink) and
      if cfg.isSinkWithHighlight(sink.getNode(), _) then
        cfg.isSinkWithHighlight(sink.getNode(), highlight)
      else
        highlight = sink.getNode()
select highlight, source, sink, "This command depends on $@.",
       source.getNode(), "a user-provided value"