Dataflow: Add provenance for configuration-specific steps.

Author: aschackmull

shared/dataflow/codeql/dataflow/DataFlow.qll

@@ -609,7 +609,7 @@ module DataFlowMake<LocationSig Location, InputSig<Location> Lang> {
       predicate accessPathLimit = Config::accessPathLimit/0;
 
       predicate isAdditionalFlowStep(Node node1, Node node2, string model) {
-        Config::isAdditionalFlowStep(node1, node2) and model = ""
+        Config::isAdditionalFlowStep(node1, node2) and model = "Config"
       }
     }
 
@@ -631,7 +631,7 @@ module DataFlowMake<LocationSig Location, InputSig<Location> Lang> {
       predicate accessPathLimit = Config::accessPathLimit/0;
 
       predicate isAdditionalFlowStep(Node node1, Node node2, string model) {
-        Config::isAdditionalFlowStep(node1, node2) and model = ""
+        Config::isAdditionalFlowStep(node1, node2) and model = "Config"
       }
     }
 

shared/dataflow/codeql/dataflow/TaintTracking.qll

@@ -80,7 +80,7 @@ module TaintFlowMake<
       predicate isAdditionalFlowStep(
         DataFlowLang::Node node1, DataFlowLang::Node node2, string model
       ) {
-        Config::isAdditionalFlowStep(node1, node2) and model = ""
+        Config::isAdditionalFlowStep(node1, node2) and model = "Config"
       }
     }
 
@@ -106,7 +106,7 @@ module TaintFlowMake<
       predicate isAdditionalFlowStep(
         DataFlowLang::Node node1, DataFlowLang::Node node2, string model
       ) {
-        Config::isAdditionalFlowStep(node1, node2) and model = ""
+        Config::isAdditionalFlowStep(node1, node2) and model = "Config"
       }
     }
 

shared/dataflow/codeql/dataflow/internal/DataFlowImpl.qll

@@ -2854,7 +2854,7 @@ module MakeImpl<LocationSig Location, InputSig<Location> Lang> {
         Stage2::revFlow(node2, pragma[only_bind_into](state2), false)
         or
         additionalLocalStateStep(node1, state1, node2, state2) and
-        label = "" and
+        label = "Config" and
         Stage2::revFlow(node1, state1, false) and
         Stage2::revFlow(node2, state2, false)
       }
@@ -4245,7 +4245,7 @@ module MakeImpl<LocationSig Location, InputSig<Location> Lang> {
       ap = TAccessPathNil() and
       isStoreStep = false and
       summaryLabel = "-" and
-      label = ""
+      label = "Config"
       or
       exists(Content c, DataFlowType t0, AccessPath ap0 |
         pathStoreStep(mid, node, state, t0, ap0, c, t, cc) and