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Add models for Apache Commons Lang and Text's Str[ing]Substitutor
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‎java/ql/src/semmle/code/java/frameworks/apache/Lang.qll‎

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@@ -306,3 +306,43 @@ private class ApacheStrLookupTaintGetter extends TaintPreservingCallable {
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override predicate returnsTaintFrom(int arg) { arg = -1 }
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}
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private class ApacheStrSubstitutor extends RefType {
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ApacheStrSubstitutor() {
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this.hasQualifiedName("org.apache.commons.lang3.text", "StrSubstitutor") or
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this.hasQualifiedName("org.apache.commons.text", "StringSubstitutor")
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}
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}
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/**
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* A callable declared on Apache Commons `StrSubstitutor` that returns taint.
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*/
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private class ApacheStrSubstitutorTaintGetter extends TaintPreservingCallable {
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ApacheStrSubstitutorTaintGetter() {
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this.getSourceDeclaration().getDeclaringType() instanceof ApacheStrSubstitutor and
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(
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this instanceof Constructor or
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this.getName() = "replace"
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)
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}
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override predicate returnsTaintFrom(int arg) {
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arg in [0, -1]
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or
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this.isStatic() and arg = 1
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}
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}
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/**
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* A callable declared on Apache Commons `StrSubstitutor` that transfers taint.
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*/
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private class ApacheStrSubstitutorTaintTransfer extends TaintPreservingCallable {
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ApacheStrSubstitutorTaintTransfer() {
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this.getSourceDeclaration().getDeclaringType() instanceof ApacheStrSubstitutor and
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this.getName() in ["replaceIn", "setVariableResolver"]
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}
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override predicate transfersTaint(int src, int sink) {
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if this.getName() = "replaceIn" then (src = -1 and sink = 0) else (src = 0 and sink = -1)
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}
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}

‎java/ql/test/library-tests/frameworks/apache-commons-lang3/StrSubstitutorTest.java‎

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import org.apache.commons.lang3.text.StrSubstitutor;
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import org.apache.commons.lang3.text.StrLookup;
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import org.apache.commons.lang3.text.StrMatcher;
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import org.apache.commons.lang3.text.StrBuilder;
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import java.util.HashMap;
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import java.util.Map;
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import java.util.Properties;
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class StrSubstitutorTest {
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String taint() { return "tainted"; }
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void sink(Object o) {}
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void test() throws Exception {
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Map<String, String> taintedMap = new HashMap<String, String>();
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taintedMap.put("key", taint());
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StrLookup<String> taintedLookup = StrLookup.mapLookup(taintedMap);
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// Test constructors:
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StrSubstitutor ss1 = new StrSubstitutor(); ss1.setVariableResolver(taintedLookup); sink(ss1.replace("input")); // $hasTaintFlow=y
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StrSubstitutor ss2 = new StrSubstitutor(taintedMap); sink(ss2.replace("input")); // $hasTaintFlow=y
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StrSubstitutor ss3 = new StrSubstitutor(taintedMap, "{", "}"); sink(ss3.replace("input")); // $hasTaintFlow=y
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StrSubstitutor ss4 = new StrSubstitutor(taintedMap, "{", "}", ' '); sink(ss4.replace("input")); // $hasTaintFlow=y
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StrSubstitutor ss5 = new StrSubstitutor(taintedMap, "{", "}", ' ', ","); sink(ss5.replace("input")); // $hasTaintFlow=y
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StrSubstitutor ss6 = new StrSubstitutor(taintedLookup); sink(ss6.replace("input")); // $hasTaintFlow=y
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StrSubstitutor ss7 = new StrSubstitutor(taintedLookup, "{", "}", ' '); sink(ss7.replace("input")); // $hasTaintFlow=y
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StrSubstitutor ss8 = new StrSubstitutor(taintedLookup, "{", "}", ' ', ","); sink(ss8.replace("input")); // $hasTaintFlow=y
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StrSubstitutor ss9 = new StrSubstitutor(taintedLookup, (StrMatcher)null, null, ' '); sink(ss9.replace("input")); // $hasTaintFlow=y
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StrSubstitutor ss10 = new StrSubstitutor(taintedLookup, (StrMatcher)null, null, ' ', null); sink(ss10.replace("input")); // $hasTaintFlow=y
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// Test replace overloads (tainted substitution map):
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StrSubstitutor taintedSubst = ss2;
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sink(taintedSubst.replace((Object)"input")); // $hasTaintFlow=y
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sink(taintedSubst.replace("input")); // $hasTaintFlow=y
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sink(taintedSubst.replace("input", 0, 0)); // $hasTaintFlow=y
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sink(taintedSubst.replace("input".toCharArray())); // $hasTaintFlow=y
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sink(taintedSubst.replace("input".toCharArray(), 0, 0)); // $hasTaintFlow=y
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sink(taintedSubst.replace((CharSequence)"input")); // $hasTaintFlow=y
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sink(taintedSubst.replace((CharSequence)"input", 0, 0)); // $hasTaintFlow=y
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sink(taintedSubst.replace(new StrBuilder("input"))); // $hasTaintFlow=y
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sink(taintedSubst.replace(new StrBuilder("input"), 0, 0)); // $hasTaintFlow=y
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sink(taintedSubst.replace(new StringBuilder("input"))); // $hasTaintFlow=y
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sink(taintedSubst.replace(new StringBuilder("input"), 0, 0)); // $hasTaintFlow=y
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sink(taintedSubst.replace(new StringBuffer("input"))); // $hasTaintFlow=y
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sink(taintedSubst.replace(new StringBuffer("input"), 0, 0)); // $hasTaintFlow=y
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// Test replace overloads (tainted input):
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StrSubstitutor untaintedSubst = ss1;
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sink(untaintedSubst.replace((Object)taint())); // $hasTaintFlow=y
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sink(untaintedSubst.replace(taint())); // $hasTaintFlow=y
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sink(untaintedSubst.replace(taint(), 0, 0)); // $hasTaintFlow=y
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sink(untaintedSubst.replace(taint().toCharArray())); // $hasTaintFlow=y
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sink(untaintedSubst.replace(taint().toCharArray(), 0, 0)); // $hasTaintFlow=y
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sink(untaintedSubst.replace((CharSequence)taint())); // $hasTaintFlow=y
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sink(untaintedSubst.replace((CharSequence)taint(), 0, 0)); // $hasTaintFlow=y
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sink(untaintedSubst.replace(new StrBuilder(taint()))); // $hasTaintFlow=y
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sink(untaintedSubst.replace(new StrBuilder(taint()), 0, 0)); // $hasTaintFlow=y
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sink(untaintedSubst.replace(new StringBuilder(taint()))); // $hasTaintFlow=y
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sink(untaintedSubst.replace(new StringBuilder(taint()), 0, 0)); // $hasTaintFlow=y
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sink(untaintedSubst.replace(new StringBuffer(taint()))); // $hasTaintFlow=y
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sink(untaintedSubst.replace(new StringBuffer(taint()), 0, 0)); // $hasTaintFlow=y
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// Test static replace methods:
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sink(StrSubstitutor.replace(taint(), new HashMap<String, String>())); // $hasTaintFlow=y
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sink(StrSubstitutor.replace(taint(), new HashMap<String, String>(), "{", "}")); // $hasTaintFlow=y
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sink(StrSubstitutor.replace("input", taintedMap)); // $hasTaintFlow=y
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sink(StrSubstitutor.replace("input", taintedMap, "{", "}")); // $hasTaintFlow=y
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Properties taintedProps = new Properties();
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taintedProps.put("key", taint());
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sink(StrSubstitutor.replace(taint(), new Properties())); // $hasTaintFlow=y
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sink(StrSubstitutor.replace("input", taintedProps)); // $hasTaintFlow=y
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// Test replaceIn methods:
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StrBuilder strBuilder1 = new StrBuilder(); taintedSubst.replaceIn(strBuilder1); sink(strBuilder1.toString()); // $hasTaintFlow=y
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StrBuilder strBuilder2 = new StrBuilder(); taintedSubst.replaceIn(strBuilder2, 0, 0); sink(strBuilder2.toString()); // $hasTaintFlow=y
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StringBuilder stringBuilder1 = new StringBuilder(); taintedSubst.replaceIn(stringBuilder1); sink(stringBuilder1.toString()); // $hasTaintFlow=y
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StringBuilder stringBuilder2 = new StringBuilder(); taintedSubst.replaceIn(stringBuilder2, 0, 0); sink(stringBuilder2.toString()); // $hasTaintFlow=y
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StringBuffer stringBuffer1 = new StringBuffer(); taintedSubst.replaceIn(stringBuffer1); sink(stringBuffer1.toString()); // $hasTaintFlow=y
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StringBuffer stringBuffer2 = new StringBuffer(); taintedSubst.replaceIn(stringBuffer2, 0, 0); sink(stringBuffer2.toString()); // $hasTaintFlow=y
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}
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}

‎java/ql/test/library-tests/frameworks/apache-commons-lang3/StringSubstitutorTextTest.java‎

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

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