Add taint-tracking for html/template package.

ql/src/semmle/go/frameworks/Stdlib.qll

@@ -28,6 +28,7 @@ import semmle.go.frameworks.stdlib.EncodingJson
 import semmle.go.frameworks.stdlib.EncodingPem
 import semmle.go.frameworks.stdlib.EncodingXml
 import semmle.go.frameworks.stdlib.Html
+import semmle.go.frameworks.stdlib.HtmlTemplate
 import semmle.go.frameworks.stdlib.Path
 import semmle.go.frameworks.stdlib.PathFilepath
 import semmle.go.frameworks.stdlib.Reflect

ql/src/semmle/go/frameworks/stdlib/HtmlTemplate.qll

@@ -0,0 +1,66 @@
+/**
+ * Provides classes modeling security-relevant aspects of the `html/template` package.
+ */
+
+import go
+
+/** Provides models of commonly used functions in the `html/template` package. */
+module HtmlTemplate {
+  private class FunctionModels extends TaintTracking::FunctionModel {
+    FunctionInput inp;
+    FunctionOutput outp;
+
+    FunctionModels() {
+      // signature: func HTMLEscape(w io.Writer, b []byte)
+      hasQualifiedName("html/template", "HTMLEscape") and
+      (inp.isParameter(1) and outp.isParameter(0))
+      or
+      // signature: func HTMLEscapeString(s string) string
+      hasQualifiedName("html/template", "HTMLEscapeString") and
+      (inp.isParameter(0) and outp.isResult())
+      or
+      // signature: func HTMLEscaper(args ...interface{}) string
+      hasQualifiedName("html/template", "HTMLEscaper") and
+      (inp.isParameter(_) and outp.isResult())
+      or
+      // signature: func JSEscape(w io.Writer, b []byte)
+      hasQualifiedName("html/template", "JSEscape") and
+      (inp.isParameter(1) and outp.isParameter(0))
+      or
+      // signature: func JSEscapeString(s string) string
+      hasQualifiedName("html/template", "JSEscapeString") and
+      (inp.isParameter(0) and outp.isResult())
+      or
+      // signature: func JSEscaper(args ...interface{}) string
+      hasQualifiedName("html/template", "JSEscaper") and
+      (inp.isParameter(_) and outp.isResult())
+      or
+      // signature: func URLQueryEscaper(args ...interface{}) string
+      hasQualifiedName("html/template", "URLQueryEscaper") and
+      (inp.isParameter(_) and outp.isResult())
+    }
+
+    override predicate hasTaintFlow(FunctionInput input, FunctionOutput output) {
+      input = inp and output = outp
+    }
+  }
+
+  private class MethodModels extends TaintTracking::FunctionModel, Method {
+    FunctionInput inp;
+    FunctionOutput outp;
+
+    MethodModels() {
+      // signature: func (*Template).Execute(wr io.Writer, data interface{}) error
+      this.hasQualifiedName("html/template", "Template", "Execute") and
+      (inp.isParameter(1) and outp.isParameter(0))
+      or
+      // signature: func (*Template).ExecuteTemplate(wr io.Writer, name string, data interface{}) error
+      this.hasQualifiedName("html/template", "Template", "ExecuteTemplate") and
+      (inp.isParameter(2) and outp.isParameter(0))
+    }
+
+    override predicate hasTaintFlow(FunctionInput input, FunctionOutput output) {
+      input = inp and output = outp
+    }
+  }
+}

ql/test/library-tests/semmle/go/frameworks/StdlibTaintFlow/HtmlTemplate.go

@@ -0,0 +1,116 @@
+// Code generated by https://github.com/gagliardetto/codebox. DO NOT EDIT.
+
+package main
+
+import (
+	"html/template"
+	"io"
+)
+
+func TaintStepTest_HtmlTemplateHTMLEscape_B0I0O0(sourceCQL interface{}) interface{} {
+	fromByte656 := sourceCQL.([]byte)
+	var intoWriter414 io.Writer
+	template.HTMLEscape(intoWriter414, fromByte656)
+	return intoWriter414
+}
+
+func TaintStepTest_HtmlTemplateHTMLEscapeString_B0I0O0(sourceCQL interface{}) interface{} {
+	fromString518 := sourceCQL.(string)
+	intoString650 := template.HTMLEscapeString(fromString518)
+	return intoString650
+}
+
+func TaintStepTest_HtmlTemplateHTMLEscaper_B0I0O0(sourceCQL interface{}) interface{} {
+	fromInterface784 := sourceCQL.(interface{})
+	intoString957 := template.HTMLEscaper(fromInterface784)
+	return intoString957
+}
+
+func TaintStepTest_HtmlTemplateJSEscape_B0I0O0(sourceCQL interface{}) interface{} {
+	fromByte520 := sourceCQL.([]byte)
+	var intoWriter443 io.Writer
+	template.JSEscape(intoWriter443, fromByte520)
+	return intoWriter443
+}
+
+func TaintStepTest_HtmlTemplateJSEscapeString_B0I0O0(sourceCQL interface{}) interface{} {
+	fromString127 := sourceCQL.(string)
+	intoString483 := template.JSEscapeString(fromString127)
+	return intoString483
+}
+
+func TaintStepTest_HtmlTemplateJSEscaper_B0I0O0(sourceCQL interface{}) interface{} {
+	fromInterface989 := sourceCQL.(interface{})
+	intoString982 := template.JSEscaper(fromInterface989)
+	return intoString982
+}
+
+func TaintStepTest_HtmlTemplateURLQueryEscaper_B0I0O0(sourceCQL interface{}) interface{} {
+	fromInterface417 := sourceCQL.(interface{})
+	intoString584 := template.URLQueryEscaper(fromInterface417)
+	return intoString584
+}
+
+func TaintStepTest_HtmlTemplateTemplateExecute_B0I0O0(sourceCQL interface{}) interface{} {
+	fromInterface991 := sourceCQL.(interface{})
+	var intoWriter881 io.Writer
+	var mediumObjCQL template.Template
+	mediumObjCQL.Execute(intoWriter881, fromInterface991)
+	return intoWriter881
+}
+
+func TaintStepTest_HtmlTemplateTemplateExecuteTemplate_B0I0O0(sourceCQL interface{}) interface{} {
+	fromInterface186 := sourceCQL.(interface{})
+	var intoWriter284 io.Writer
+	var mediumObjCQL template.Template
+	mediumObjCQL.ExecuteTemplate(intoWriter284, "", fromInterface186)
+	return intoWriter284
+}
+
+func RunAllTaints_HtmlTemplate() {
+	{
+		source := newSource(0)
+		out := TaintStepTest_HtmlTemplateHTMLEscape_B0I0O0(source)
+		sink(0, out)
+	}
+	{
+		source := newSource(1)
+		out := TaintStepTest_HtmlTemplateHTMLEscapeString_B0I0O0(source)
+		sink(1, out)
+	}
+	{
+		source := newSource(2)
+		out := TaintStepTest_HtmlTemplateHTMLEscaper_B0I0O0(source)
+		sink(2, out)
+	}
+	{
+		source := newSource(3)
+		out := TaintStepTest_HtmlTemplateJSEscape_B0I0O0(source)
+		sink(3, out)
+	}
+	{
+		source := newSource(4)
+		out := TaintStepTest_HtmlTemplateJSEscapeString_B0I0O0(source)
+		sink(4, out)
+	}
+	{
+		source := newSource(5)
+		out := TaintStepTest_HtmlTemplateJSEscaper_B0I0O0(source)
+		sink(5, out)
+	}
+	{
+		source := newSource(6)
+		out := TaintStepTest_HtmlTemplateURLQueryEscaper_B0I0O0(source)
+		sink(6, out)
+	}
+	{
+		source := newSource(7)
+		out := TaintStepTest_HtmlTemplateTemplateExecute_B0I0O0(source)
+		sink(7, out)
+	}
+	{
+		source := newSource(8)
+		out := TaintStepTest_HtmlTemplateTemplateExecuteTemplate_B0I0O0(source)
+		sink(8, out)
+	}
+}