undefect. CWE-407 — 63 sites patched across 27 ecosystems

Authors: russell@unturf.com · brackishbert@gmail.com · foxhop.net · TimeHexOn.com

Patches, unit tests, benchmarks, whitepaper, and outreach briefs.
Public domain — no copyright claimed. Use freely.

make/langtools/tools/javacserver/util/LoggingOutputStream.java

@@ -0,0 +1,71 @@
+/*
+ * Copyright (c) 2016, 2022, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package javacserver.util;
+
+import java.io.ByteArrayOutputStream;
+import java.io.FilterOutputStream;
+import java.io.IOException;
+import java.io.OutputStream;
+
+public class LoggingOutputStream extends FilterOutputStream {
+    private static final byte[] LINE_SEP = System.lineSeparator().getBytes();
+
+    private final Log.Level level;
+    private final String linePrefix;
+    private EolTrackingByteArrayOutputStream buf = new EolTrackingByteArrayOutputStream();
+
+    public LoggingOutputStream(OutputStream out, Log.Level level, String linePrefix) {
+        super(out);
+        this.level = level;
+        this.linePrefix = linePrefix;
+    }
+
+    @Override
+    public void write(int b) throws IOException {
+        super.write(b);
+        buf.write(b);
+        if (buf.isLineComplete()) {
+            String line = new String(buf.toByteArray(), 0, buf.size() - LINE_SEP.length);
+            Log.log(level, linePrefix + line);
+            buf = new EolTrackingByteArrayOutputStream();
+        }
+    }
+
+    private static class EolTrackingByteArrayOutputStream extends ByteArrayOutputStream {
+        private static final byte[] EOL = System.lineSeparator().getBytes();
+        private boolean isLineComplete() {
+            if (count < EOL.length) {
+                return false;
+            }
+            for (int i = 0; i < EOL.length; i++) {
+                if (buf[count - EOL.length + i] != EOL[i]) {
+                    return false;
+                }
+            }
+            return true;
+        }
+    }
+}