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criemenaschackmull
criemen
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Add tests exhibiting false positives in the dataflow library, where call context is not used to prune branches.
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‎java/ql/test/library-tests/dataflow/call-sensitivity/A.java‎

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public class A {
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public static void sink(Object o) {
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}
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public void callSinkIfTrue(Object o, boolean cond) {
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if (cond) {
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sink(o);
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}
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}
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public void callSinkIfFalse(Object o, boolean cond) {
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if (!cond) {
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sink(o);
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}
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}
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public void callSinkFromLoop(Object o, boolean cond) {
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while (cond) {
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sink(o);
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}
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}
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public void localCallSensitivity(Object o, boolean c) {
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Object o1 = o;
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Object o2 = null;
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if (c) {
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Object tmp = o1;
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o2 = 1 == 1 ? (tmp) : (tmp);
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}
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Object o3 = o2;
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sink(o3);
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}
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public void f1() {
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// should not exhibit flow
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callSinkIfTrue(new Integer(1), false);
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callSinkIfFalse(new Integer(2), true);
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callSinkFromLoop(new Integer(3), false);
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localCallSensitivity(new Integer(4), false);
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// should exhibit flow
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callSinkIfTrue(new Integer(1), true);
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callSinkIfFalse(new Integer(2), false);
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callSinkFromLoop(new Integer(3), true);
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localCallSensitivity(new Integer(4), true);
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}
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public void f2() {
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boolean t = true;
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boolean f = false;
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// should not exhibit flow
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callSinkIfTrue(new Integer(4), f);
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callSinkIfFalse(new Integer(5), t);
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callSinkFromLoop(new Integer(6), f);
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localCallSensitivity(new Integer(4), f);
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// should exhibit flow
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callSinkIfTrue(new Integer(4), t);
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callSinkIfFalse(new Integer(5), f);
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callSinkFromLoop(new Integer(6), t);
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localCallSensitivity(new Integer(4), t);
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}
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public void f3(InterfaceA b) {
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boolean t = true;
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boolean f = false;
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// should not exhibit flow
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b.callSinkIfTrue(new Integer(4), f);
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b.callSinkIfFalse(new Integer(5), t);
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b.localCallSensitivity(new Integer(4), f);
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// should exhibit flow
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b.callSinkIfTrue(new Integer(4), t);
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b.callSinkIfFalse(new Integer(5), f);
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b.localCallSensitivity(new Integer(4), t);
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}
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class B implements InterfaceA {
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@Override
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public void callSinkIfTrue(Object o, boolean cond) {
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if (cond) {
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sink(o);
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}
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}
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@Override
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public void callSinkIfFalse(Object o, boolean cond) {
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if (!cond) {
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sink(o);
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}
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}
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@Override
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public void localCallSensitivity(Object o, boolean c) {
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Object o1 = o;
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Object o2 = null;
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if (c) {
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Object tmp = o1;
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o2 = 1 == 1 ? (tmp) : (tmp);
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}
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Object o3 = o2;
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sink(o3);
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}
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}
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}

‎java/ql/test/library-tests/dataflow/call-sensitivity/InterfaceA.java‎

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public interface InterfaceA {
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public void callSinkIfTrue(Object o, boolean cond);
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public void callSinkIfFalse(Object o, boolean cond);
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public void localCallSensitivity(Object o, boolean c);
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}

‎java/ql/test/library-tests/dataflow/call-sensitivity/flow.expected‎

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edges
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| A.java:6:29:6:36 | o [ : Number] | A.java:8:9:8:9 | o |
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| A.java:12:30:12:37 | o [ : Number] | A.java:14:9:14:9 | o |
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| A.java:18:31:18:38 | o [ : Number] | A.java:20:9:20:9 | o |
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| A.java:24:35:24:42 | o [ : Number] | A.java:32:8:32:9 | o3 |
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| A.java:37:18:37:31 | new Integer(...) [ : Number] | A.java:6:29:6:36 | o [ : Number] |
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| A.java:38:19:38:32 | new Integer(...) [ : Number] | A.java:12:30:12:37 | o [ : Number] |
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| A.java:39:20:39:33 | new Integer(...) [ : Number] | A.java:18:31:18:38 | o [ : Number] |
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| A.java:40:24:40:37 | new Integer(...) [ : Number] | A.java:24:35:24:42 | o [ : Number] |
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| A.java:42:18:42:31 | new Integer(...) [ : Number] | A.java:6:29:6:36 | o [ : Number] |
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| A.java:43:19:43:32 | new Integer(...) [ : Number] | A.java:12:30:12:37 | o [ : Number] |
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| A.java:44:20:44:33 | new Integer(...) [ : Number] | A.java:18:31:18:38 | o [ : Number] |
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| A.java:45:24:45:37 | new Integer(...) [ : Number] | A.java:24:35:24:42 | o [ : Number] |
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| A.java:52:18:52:31 | new Integer(...) [ : Number] | A.java:6:29:6:36 | o [ : Number] |
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| A.java:53:19:53:32 | new Integer(...) [ : Number] | A.java:12:30:12:37 | o [ : Number] |
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| A.java:54:20:54:33 | new Integer(...) [ : Number] | A.java:18:31:18:38 | o [ : Number] |
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| A.java:55:24:55:37 | new Integer(...) [ : Number] | A.java:24:35:24:42 | o [ : Number] |
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| A.java:57:18:57:31 | new Integer(...) [ : Number] | A.java:6:29:6:36 | o [ : Number] |
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| A.java:58:19:58:32 | new Integer(...) [ : Number] | A.java:12:30:12:37 | o [ : Number] |
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| A.java:59:20:59:33 | new Integer(...) [ : Number] | A.java:18:31:18:38 | o [ : Number] |
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| A.java:60:24:60:37 | new Integer(...) [ : Number] | A.java:24:35:24:42 | o [ : Number] |
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| A.java:67:20:67:33 | new Integer(...) [ : Number] | A.java:78:30:78:37 | o [ : Number] |
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| A.java:68:21:68:34 | new Integer(...) [ : Number] | A.java:85:31:85:38 | o [ : Number] |
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| A.java:69:26:69:39 | new Integer(...) [ : Number] | A.java:92:36:92:43 | o [ : Number] |
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| A.java:71:20:71:33 | new Integer(...) [ : Number] | A.java:78:30:78:37 | o [ : Number] |
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| A.java:72:21:72:34 | new Integer(...) [ : Number] | A.java:85:31:85:38 | o [ : Number] |
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| A.java:73:26:73:39 | new Integer(...) [ : Number] | A.java:92:36:92:43 | o [ : Number] |
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| A.java:78:30:78:37 | o [ : Number] | A.java:80:10:80:10 | o |
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| A.java:85:31:85:38 | o [ : Number] | A.java:87:10:87:10 | o |
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| A.java:92:36:92:43 | o [ : Number] | A.java:100:9:100:10 | o3 |
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nodes
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| A.java:6:29:6:36 | o [ : Number] | semmle.label | o [ : Number] |
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| A.java:8:9:8:9 | o | semmle.label | o |
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| A.java:12:30:12:37 | o [ : Number] | semmle.label | o [ : Number] |
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| A.java:14:9:14:9 | o | semmle.label | o |
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| A.java:18:31:18:38 | o [ : Number] | semmle.label | o [ : Number] |
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| A.java:20:9:20:9 | o | semmle.label | o |
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| A.java:24:35:24:42 | o [ : Number] | semmle.label | o [ : Number] |
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| A.java:32:8:32:9 | o3 | semmle.label | o3 |
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| A.java:37:18:37:31 | new Integer(...) [ : Number] | semmle.label | new Integer(...) [ : Number] |
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| A.java:38:19:38:32 | new Integer(...) [ : Number] | semmle.label | new Integer(...) [ : Number] |
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| A.java:39:20:39:33 | new Integer(...) [ : Number] | semmle.label | new Integer(...) [ : Number] |
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| A.java:40:24:40:37 | new Integer(...) [ : Number] | semmle.label | new Integer(...) [ : Number] |
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| A.java:42:18:42:31 | new Integer(...) [ : Number] | semmle.label | new Integer(...) [ : Number] |
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| A.java:43:19:43:32 | new Integer(...) [ : Number] | semmle.label | new Integer(...) [ : Number] |
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| A.java:44:20:44:33 | new Integer(...) [ : Number] | semmle.label | new Integer(...) [ : Number] |
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| A.java:45:24:45:37 | new Integer(...) [ : Number] | semmle.label | new Integer(...) [ : Number] |
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| A.java:52:18:52:31 | new Integer(...) [ : Number] | semmle.label | new Integer(...) [ : Number] |
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| A.java:53:19:53:32 | new Integer(...) [ : Number] | semmle.label | new Integer(...) [ : Number] |
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| A.java:54:20:54:33 | new Integer(...) [ : Number] | semmle.label | new Integer(...) [ : Number] |
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| A.java:55:24:55:37 | new Integer(...) [ : Number] | semmle.label | new Integer(...) [ : Number] |
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| A.java:57:18:57:31 | new Integer(...) [ : Number] | semmle.label | new Integer(...) [ : Number] |
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| A.java:58:19:58:32 | new Integer(...) [ : Number] | semmle.label | new Integer(...) [ : Number] |
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| A.java:59:20:59:33 | new Integer(...) [ : Number] | semmle.label | new Integer(...) [ : Number] |
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| A.java:60:24:60:37 | new Integer(...) [ : Number] | semmle.label | new Integer(...) [ : Number] |
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| A.java:67:20:67:33 | new Integer(...) [ : Number] | semmle.label | new Integer(...) [ : Number] |
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| A.java:68:21:68:34 | new Integer(...) [ : Number] | semmle.label | new Integer(...) [ : Number] |
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| A.java:69:26:69:39 | new Integer(...) [ : Number] | semmle.label | new Integer(...) [ : Number] |
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| A.java:71:20:71:33 | new Integer(...) [ : Number] | semmle.label | new Integer(...) [ : Number] |
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| A.java:72:21:72:34 | new Integer(...) [ : Number] | semmle.label | new Integer(...) [ : Number] |
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| A.java:73:26:73:39 | new Integer(...) [ : Number] | semmle.label | new Integer(...) [ : Number] |
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| A.java:78:30:78:37 | o [ : Number] | semmle.label | o [ : Number] |
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| A.java:80:10:80:10 | o | semmle.label | o |
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| A.java:85:31:85:38 | o [ : Number] | semmle.label | o [ : Number] |
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| A.java:87:10:87:10 | o | semmle.label | o |
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| A.java:92:36:92:43 | o [ : Number] | semmle.label | o [ : Number] |
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| A.java:100:9:100:10 | o3 | semmle.label | o3 |
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#select
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| A.java:37:18:37:31 | new Integer(...) [ : Number] | A.java:37:18:37:31 | new Integer(...) [ : Number] | A.java:8:9:8:9 | o | $@ | A.java:8:9:8:9 | o | o |
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| A.java:38:19:38:32 | new Integer(...) [ : Number] | A.java:38:19:38:32 | new Integer(...) [ : Number] | A.java:14:9:14:9 | o | $@ | A.java:14:9:14:9 | o | o |
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| A.java:39:20:39:33 | new Integer(...) [ : Number] | A.java:39:20:39:33 | new Integer(...) [ : Number] | A.java:20:9:20:9 | o | $@ | A.java:20:9:20:9 | o | o |
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| A.java:40:24:40:37 | new Integer(...) [ : Number] | A.java:40:24:40:37 | new Integer(...) [ : Number] | A.java:32:8:32:9 | o3 | $@ | A.java:32:8:32:9 | o3 | o3 |
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| A.java:42:18:42:31 | new Integer(...) [ : Number] | A.java:42:18:42:31 | new Integer(...) [ : Number] | A.java:8:9:8:9 | o | $@ | A.java:8:9:8:9 | o | o |
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| A.java:43:19:43:32 | new Integer(...) [ : Number] | A.java:43:19:43:32 | new Integer(...) [ : Number] | A.java:14:9:14:9 | o | $@ | A.java:14:9:14:9 | o | o |
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| A.java:44:20:44:33 | new Integer(...) [ : Number] | A.java:44:20:44:33 | new Integer(...) [ : Number] | A.java:20:9:20:9 | o | $@ | A.java:20:9:20:9 | o | o |
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| A.java:45:24:45:37 | new Integer(...) [ : Number] | A.java:45:24:45:37 | new Integer(...) [ : Number] | A.java:32:8:32:9 | o3 | $@ | A.java:32:8:32:9 | o3 | o3 |
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| A.java:52:18:52:31 | new Integer(...) [ : Number] | A.java:52:18:52:31 | new Integer(...) [ : Number] | A.java:8:9:8:9 | o | $@ | A.java:8:9:8:9 | o | o |
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| A.java:53:19:53:32 | new Integer(...) [ : Number] | A.java:53:19:53:32 | new Integer(...) [ : Number] | A.java:14:9:14:9 | o | $@ | A.java:14:9:14:9 | o | o |
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| A.java:54:20:54:33 | new Integer(...) [ : Number] | A.java:54:20:54:33 | new Integer(...) [ : Number] | A.java:20:9:20:9 | o | $@ | A.java:20:9:20:9 | o | o |
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| A.java:55:24:55:37 | new Integer(...) [ : Number] | A.java:55:24:55:37 | new Integer(...) [ : Number] | A.java:32:8:32:9 | o3 | $@ | A.java:32:8:32:9 | o3 | o3 |
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| A.java:57:18:57:31 | new Integer(...) [ : Number] | A.java:57:18:57:31 | new Integer(...) [ : Number] | A.java:8:9:8:9 | o | $@ | A.java:8:9:8:9 | o | o |
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| A.java:58:19:58:32 | new Integer(...) [ : Number] | A.java:58:19:58:32 | new Integer(...) [ : Number] | A.java:14:9:14:9 | o | $@ | A.java:14:9:14:9 | o | o |
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| A.java:59:20:59:33 | new Integer(...) [ : Number] | A.java:59:20:59:33 | new Integer(...) [ : Number] | A.java:20:9:20:9 | o | $@ | A.java:20:9:20:9 | o | o |
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| A.java:60:24:60:37 | new Integer(...) [ : Number] | A.java:60:24:60:37 | new Integer(...) [ : Number] | A.java:32:8:32:9 | o3 | $@ | A.java:32:8:32:9 | o3 | o3 |
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| A.java:67:20:67:33 | new Integer(...) [ : Number] | A.java:67:20:67:33 | new Integer(...) [ : Number] | A.java:80:10:80:10 | o | $@ | A.java:80:10:80:10 | o | o |
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| A.java:68:21:68:34 | new Integer(...) [ : Number] | A.java:68:21:68:34 | new Integer(...) [ : Number] | A.java:87:10:87:10 | o | $@ | A.java:87:10:87:10 | o | o |
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| A.java:69:26:69:39 | new Integer(...) [ : Number] | A.java:69:26:69:39 | new Integer(...) [ : Number] | A.java:100:9:100:10 | o3 | $@ | A.java:100:9:100:10 | o3 | o3 |
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| A.java:71:20:71:33 | new Integer(...) [ : Number] | A.java:71:20:71:33 | new Integer(...) [ : Number] | A.java:80:10:80:10 | o | $@ | A.java:80:10:80:10 | o | o |
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| A.java:72:21:72:34 | new Integer(...) [ : Number] | A.java:72:21:72:34 | new Integer(...) [ : Number] | A.java:87:10:87:10 | o | $@ | A.java:87:10:87:10 | o | o |
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| A.java:73:26:73:39 | new Integer(...) [ : Number] | A.java:73:26:73:39 | new Integer(...) [ : Number] | A.java:100:9:100:10 | o3 | $@ | A.java:100:9:100:10 | o3 | o3 |

‎java/ql/test/library-tests/dataflow/call-sensitivity/flow.ql‎

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/**
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* @kind path-problem
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*/
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import java
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import semmle.code.java.dataflow.DataFlow
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import DataFlow::PathGraph
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class Conf extends DataFlow::Configuration {
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Conf() { this = "CallSensitiveFlowConf" }
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override predicate isSource(DataFlow::Node src) { src.asExpr() instanceof ClassInstanceExpr }
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override predicate isSink(DataFlow::Node sink) {
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exists(MethodAccess ma |
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ma.getMethod().hasName("sink") and
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ma.getAnArgument() = sink.asExpr()
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)
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}
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}
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from DataFlow::PathNode source, DataFlow::PathNode sink, Conf conf
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where conf.hasFlowPath(source, sink)
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select source, source, sink, "$@", sink, sink.toString()

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