Update HeaderDeclaration input naming

Author: jorgectf

python/ql/src/experimental/semmle/python/Concepts.qll

@@ -159,7 +159,7 @@ module HeaderDeclaration {
     /**
      * Gets the argument containing the header value.
      */
-    abstract DataFlow::Node getHeaderInput();
+    abstract DataFlow::Node getAnInput();
   }
 }
 
@@ -177,5 +177,5 @@ class HeaderDeclaration extends DataFlow::Node {
   /**
    * Gets the argument containing the header value.
    */
-  DataFlow::Node getHeaderInput() { result = range.getHeaderInput() }
+  DataFlow::Node getAnInput() { result = range.getAnInput() }
 }

python/ql/src/experimental/semmle/python/frameworks/Django.qll

@@ -56,7 +56,7 @@ private module PrivateDjango {
           class DjangoResponseSetItemCall extends DataFlow::CallCfgNode, HeaderDeclaration::Range {
             DjangoResponseSetItemCall() { this.getFunction() = headerSetItemCall() }
 
-            override DataFlow::Node getHeaderInput() { result = this.getArg([0, 1]) }
+            override DataFlow::Node getAnInput() { result = this.getArg([0, 1]) }
           }
 
           class DjangoResponseDefinition extends DataFlow::Node, HeaderDeclaration::Range {
@@ -67,7 +67,7 @@ private module PrivateDjango {
               headerInput.asCfgNode() = this.asCfgNode().(DefinitionNode).getValue()
             }
 
-            override DataFlow::Node getHeaderInput() {
+            override DataFlow::Node getAnInput() {
               result.asExpr() in [headerInput.asExpr(), this.asExpr().(Subscript).getIndex()]
             }
           }

python/ql/src/experimental/semmle/python/frameworks/Flask.qll

@@ -54,20 +54,20 @@ module ExperimentalFlask {
       headerInput.asCfgNode() = this.asCfgNode().(DefinitionNode).getValue()
     }
 
-    override DataFlow::Node getHeaderInput() {
+    override DataFlow::Node getAnInput() {
       result.asExpr() in [headerInput.asExpr(), this.asExpr().(Subscript).getIndex()]
     }
   }
 
   private class FlaskMakeResponseExtend extends DataFlow::CallCfgNode, HeaderDeclaration::Range {
     FlaskMakeResponseExtend() { this.getFunction() = headerInstanceCall() }
 
-    override DataFlow::Node getHeaderInput() { result = this.getArg(_) }
+    override DataFlow::Node getAnInput() { result = this.getArg(_) }
   }
 
   private class FlaskResponse extends DataFlow::CallCfgNode, HeaderDeclaration::Range {
     FlaskResponse() { this = Flask::Response::classRef().getACall() }
 
-    override DataFlow::Node getHeaderInput() { result = this.getArgByName("headers") }
+    override DataFlow::Node getAnInput() { result = this.getArgByName("headers") }
   }
 }

python/ql/src/experimental/semmle/python/frameworks/Werkzeug.qll

@@ -24,7 +24,7 @@ private module Werkzeug {
           this.getFunction().(DataFlow::AttrRead).getAttributeName() = "add"
         }
 
-        override DataFlow::Node getHeaderInput() { result = this.getArg(_) }
+        override DataFlow::Node getAnInput() { result = this.getArg(_) }
       }
     }
   }

python/ql/src/experimental/semmle/python/security/injection/HTTPHeaders.qll

@@ -13,6 +13,6 @@ class HeaderInjectionFlowConfig extends TaintTracking::Configuration {
   override predicate isSource(DataFlow::Node source) { source instanceof RemoteFlowSource }
 
   override predicate isSink(DataFlow::Node sink) {
-    sink = any(HeaderDeclaration headerDeclaration).getHeaderInput()
+    sink = any(HeaderDeclaration headerDeclaration).getAnInput()
   }
 }