C#: Convert System.Web.HttpServerUtility flow to CSV format.

Author: michaelnebel

csharp/ql/lib/semmle/code/csharp/dataflow/LibraryTypeDataFlow.qll

@@ -1983,22 +1983,6 @@ class SystemWebHttpUtilityFlow extends LibraryTypeDataFlow, SystemWebHttpUtility
   }
 }
 
-/** Data flow for `System.Web.HttpServerUtility`. */
-class SystemWebHttpServerUtilityFlow extends LibraryTypeDataFlow, SystemWebHttpServerUtility {
-  override predicate callableFlow(
-    CallableFlowSource source, CallableFlowSink sink, SourceDeclarationCallable c,
-    boolean preservesValue
-  ) {
-    (
-      c = this.getAnHtmlEncodeMethod() or
-      c = this.getAnUrlEncodeMethod()
-    ) and
-    source = TCallableFlowSourceArg(0) and
-    sink = TCallableFlowSinkReturn() and
-    preservesValue = false
-  }
-}
-
 /**
  * Custom flow through `StringValues` library class.
  */

csharp/ql/lib/semmle/code/csharp/frameworks/system/Web.qll

@@ -175,6 +175,17 @@ class SystemWebHttpServerUtility extends SystemWebClass {
   Method getAnUrlEncodeMethod() { result = this.getAMethod("UrlEncode") }
 }
 
+/** Data flow for `System.Web.HttpServerUtility`. */
+private class SystemWebHttpServerUtilityFlowModelCsv extends SummaryModelCsv {
+  override predicate row(string row) {
+    row =
+      [
+        "System.Web;HttpServerUtility;false;HtmlEncode;(System.String);;Argument[0];ReturnValue;taint",
+        "System.Web;HttpServerUtility;false;UrlEncode;(System.String);;Argument[0];ReturnValue;taint"
+      ]
+  }
+}
+
 /** The `System.Web.HttpUtility` class. */
 class SystemWebHttpUtility extends SystemWebClass {
   SystemWebHttpUtility() { this.hasName("HttpUtility") }