import org.apache.commons.text.StringSubstitutor; import org.apache.commons.text.lookup.StringLookup; import org.apache.commons.text.lookup.StringLookupFactory; import org.apache.commons.text.matcher.StringMatcher; import org.apache.commons.text.TextStringBuilder; import java.util.HashMap; import java.util.Map; import java.util.Properties; class StringSubstitutorTextTest { String taint() { return "tainted"; } void sink(Object o) {} void test() throws Exception { Map taintedMap = new HashMap(); taintedMap.put("key", taint()); StringLookup taintedLookup = StringLookupFactory.INSTANCE.mapStringLookup(taintedMap); // Test constructors: StringSubstitutor ss1 = new StringSubstitutor(); ss1.setVariableResolver(taintedLookup); sink(ss1.replace("input")); // $hasTaintFlow StringSubstitutor ss2 = new StringSubstitutor(taintedMap); sink(ss2.replace("input")); // $hasTaintFlow StringSubstitutor ss3 = new StringSubstitutor(taintedMap, "{", "}"); sink(ss3.replace("input")); // $hasTaintFlow StringSubstitutor ss4 = new StringSubstitutor(taintedMap, "{", "}", ' '); sink(ss4.replace("input")); // $hasTaintFlow StringSubstitutor ss5 = new StringSubstitutor(taintedMap, "{", "}", ' ', ","); sink(ss5.replace("input")); // $hasTaintFlow StringSubstitutor ss6 = new StringSubstitutor(taintedLookup); sink(ss6.replace("input")); // $hasTaintFlow StringSubstitutor ss7 = new StringSubstitutor(taintedLookup, "{", "}", ' '); sink(ss7.replace("input")); // $hasTaintFlow StringSubstitutor ss8 = new StringSubstitutor(taintedLookup, "{", "}", ' ', ","); sink(ss8.replace("input")); // $hasTaintFlow StringSubstitutor ss9 = new StringSubstitutor(taintedLookup, (StringMatcher)null, null, ' '); sink(ss9.replace("input")); // $hasTaintFlow StringSubstitutor ss10 = new StringSubstitutor(taintedLookup, (StringMatcher)null, null, ' ', null); sink(ss10.replace("input")); // $hasTaintFlow // Test replace overloads (tainted substitution map): StringSubstitutor taintedSubst = ss2; sink(taintedSubst.replace((Object)"input")); // $hasTaintFlow sink(taintedSubst.replace("input")); // $hasTaintFlow sink(taintedSubst.replace("input", 0, 0)); // $hasTaintFlow sink(taintedSubst.replace("input".toCharArray())); // $hasTaintFlow sink(taintedSubst.replace("input".toCharArray(), 0, 0)); // $hasTaintFlow sink(taintedSubst.replace((CharSequence)"input")); // $hasTaintFlow sink(taintedSubst.replace((CharSequence)"input", 0, 0)); // $hasTaintFlow sink(taintedSubst.replace(new TextStringBuilder("input"))); // $hasTaintFlow sink(taintedSubst.replace(new TextStringBuilder("input"), 0, 0)); // $hasTaintFlow sink(taintedSubst.replace(new StringBuilder("input"))); // $hasTaintFlow sink(taintedSubst.replace(new StringBuilder("input"), 0, 0)); // $hasTaintFlow sink(taintedSubst.replace(new StringBuffer("input"))); // $hasTaintFlow sink(taintedSubst.replace(new StringBuffer("input"), 0, 0)); // $hasTaintFlow // Test replace overloads (tainted input): StringSubstitutor untaintedSubst = ss1; sink(untaintedSubst.replace((Object)taint())); // $hasTaintFlow sink(untaintedSubst.replace(taint())); // $hasTaintFlow sink(untaintedSubst.replace(taint(), 0, 0)); // $hasTaintFlow sink(untaintedSubst.replace(taint().toCharArray())); // $hasTaintFlow sink(untaintedSubst.replace(taint().toCharArray(), 0, 0)); // $hasTaintFlow sink(untaintedSubst.replace((CharSequence)taint())); // $hasTaintFlow sink(untaintedSubst.replace((CharSequence)taint(), 0, 0)); // $hasTaintFlow sink(untaintedSubst.replace(new TextStringBuilder(taint()))); // $hasTaintFlow sink(untaintedSubst.replace(new TextStringBuilder(taint()), 0, 0)); // $hasTaintFlow sink(untaintedSubst.replace(new StringBuilder(taint()))); // $hasTaintFlow sink(untaintedSubst.replace(new StringBuilder(taint()), 0, 0)); // $hasTaintFlow sink(untaintedSubst.replace(new StringBuffer(taint()))); // $hasTaintFlow sink(untaintedSubst.replace(new StringBuffer(taint()), 0, 0)); // $hasTaintFlow // Test static replace methods: sink(StringSubstitutor.replace(taint(), new HashMap())); // $hasTaintFlow sink(StringSubstitutor.replace(taint(), new HashMap(), "{", "}")); // $hasTaintFlow sink(StringSubstitutor.replace("input", taintedMap)); // $hasTaintFlow sink(StringSubstitutor.replace("input", taintedMap, "{", "}")); // $hasTaintFlow Properties taintedProps = new Properties(); taintedProps.put("key", taint()); sink(StringSubstitutor.replace(taint(), new Properties())); // $hasTaintFlow sink(StringSubstitutor.replace("input", taintedProps)); // $hasTaintFlow // Test replaceIn methods: TextStringBuilder strBuilder1 = new TextStringBuilder(); taintedSubst.replaceIn(strBuilder1); sink(strBuilder1.toString()); // $hasTaintFlow TextStringBuilder strBuilder2 = new TextStringBuilder(); taintedSubst.replaceIn(strBuilder2, 0, 0); sink(strBuilder2.toString()); // $hasTaintFlow StringBuilder stringBuilder1 = new StringBuilder(); taintedSubst.replaceIn(stringBuilder1); sink(stringBuilder1.toString()); // $hasTaintFlow StringBuilder stringBuilder2 = new StringBuilder(); taintedSubst.replaceIn(stringBuilder2, 0, 0); sink(stringBuilder2.toString()); // $hasTaintFlow StringBuffer stringBuffer1 = new StringBuffer(); taintedSubst.replaceIn(stringBuffer1); sink(stringBuffer1.toString()); // $hasTaintFlow StringBuffer stringBuffer2 = new StringBuffer(); taintedSubst.replaceIn(stringBuffer2, 0, 0); sink(stringBuffer2.toString()); // $hasTaintFlow } }