Python: Move CodeInjection to new dataflow API

Author: RasmusWL

python/ql/lib/semmle/python/security/dataflow/CodeInjectionQuery.qll

@@ -12,9 +12,11 @@ import semmle.python.dataflow.new.TaintTracking
 import CodeInjectionCustomizations::CodeInjection
 
 /**
+ * DEPRECATED: Use `CodeInjectionFlow` module instead.
+ *
  * A taint-tracking configuration for detecting "code injection" vulnerabilities.
  */
-class Configuration extends TaintTracking::Configuration {
+deprecated class Configuration extends TaintTracking::Configuration {
   Configuration() { this = "CodeInjection" }
 
   override predicate isSource(DataFlow::Node source) { source instanceof Source }
@@ -27,3 +29,14 @@ class Configuration extends TaintTracking::Configuration {
     guard instanceof SanitizerGuard
   }
 }
+
+private module CodeInjectionConfig implements DataFlow::ConfigSig {
+  predicate isSource(DataFlow::Node source) { source instanceof Source }
+
+  predicate isSink(DataFlow::Node sink) { sink instanceof Sink }
+
+  predicate isBarrier(DataFlow::Node node) { node instanceof Sanitizer }
+}
+
+/** Global taint-tracking for detecting "code injection" vulnerabilities. */
+module CodeInjectionFlow = TaintTracking::Global<CodeInjectionConfig>;

python/ql/src/Security/CWE-094/CodeInjection.ql

@@ -16,9 +16,9 @@
 
 import python
 import semmle.python.security.dataflow.CodeInjectionQuery
-import DataFlow::PathGraph
+import CodeInjectionFlow::PathGraph
 
-from Configuration config, DataFlow::PathNode source, DataFlow::PathNode sink
-where config.hasFlowPath(source, sink)
+from CodeInjectionFlow::PathNode source, CodeInjectionFlow::PathNode sink
+where CodeInjectionFlow::flowPath(source, sink)
 select sink.getNode(), source, sink, "This code execution depends on a $@.", source.getNode(),
   "user-provided value"