JansiFuzzer.java

// Copyright 2023 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
///////////////////////////////////////////////////////////////////////////
import com.code_intelligence.jazzer.api.FuzzedDataProvider;
import java.util.EnumSet;
import org.fusesource.jansi.Ansi;
import org.fusesource.jansi.AnsiConsole;

public class JansiFuzzer {
  public static void fuzzerInitialize() {
    AnsiConsole.systemInstall();
  }

  public static void fuzzerTearDown() {
    AnsiConsole.systemUninstall();
  }

  public static void fuzzerTestOneInput(FuzzedDataProvider data) {
    try {
      Ansi ansi = Ansi.ansi();
      int[] choices = data.consumeInts(data.consumeInt(1, 10));

      for (Integer choice : choices) {
        switch (choice % 27) {
          case 0:
            ansi = ansi.fg(data.pickValue(EnumSet.allOf(Ansi.Color.class)));
            break;
          case 2:
            ansi = ansi.fg(data.consumeInt());
            break;
          case 3:
            ansi = ansi.fgRgb(data.consumeInt());
            break;
          case 4:
            ansi = ansi.fgRgb(data.consumeInt(), data.consumeInt(), data.consumeInt());
            break;
          case 5:
            ansi = ansi.fgBright(data.pickValue(EnumSet.allOf(Ansi.Color.class)));
            break;
          case 6:
            ansi = ansi.bg(data.pickValue(EnumSet.allOf(Ansi.Color.class)));
            break;
          case 7:
            ansi = ansi.bg(data.consumeInt());
            break;
          case 8:
            ansi = ansi.bgRgb(data.consumeInt());
            break;
          case 9:
            ansi = ansi.bgRgb(data.consumeInt(), data.consumeInt(), data.consumeInt());
            break;
          case 10:
            ansi = ansi.bgBright(data.pickValue(EnumSet.allOf(Ansi.Color.class)));
            break;
          case 11:
            ansi = ansi.a(data.pickValue(EnumSet.allOf(Ansi.Attribute.class)));
            break;
          case 12:
            ansi = ansi.cursor(data.consumeInt(), data.consumeInt());
            break;
          case 13:
            ansi = ansi.cursorToColumn(data.consumeInt());
            break;
          case 14:
            ansi = ansi.cursorUp(data.consumeInt());
            break;
          case 15:
            ansi = ansi.cursorDown(data.consumeInt());
            break;
          case 16:
            ansi = ansi.cursorRight(data.consumeInt());
            break;
          case 17:
            ansi = ansi.cursorLeft(data.consumeInt());
            break;
          case 18:
            ansi = ansi.cursorMove(data.consumeInt(), data.consumeInt());
            break;
          case 19:
            ansi = ansi.cursorUpLine(data.consumeInt());
            break;
          case 20:
            ansi = ansi.cursorDownLine(data.consumeInt());
            break;
          case 21:
            ansi = ansi.eraseScreen(data.pickValue(EnumSet.allOf(Ansi.Erase.class)));
            break;
          case 22:
            ansi = ansi.eraseLine(data.pickValue(EnumSet.allOf(Ansi.Erase.class)));
            break;
          case 23:
            ansi = ansi.scrollUp(data.consumeInt());
            break;
          case 24:
            ansi = ansi.scrollDown(data.consumeInt());
            break;
          case 25:
            ansi = ansi.a(data.consumeRemainingAsString());
            break;
          case 26:
            ansi = ansi.render(data.consumeRemainingAsString());
            break;
        }
      }
    } catch (IllegalArgumentException e) {
      // Known exception
    }
  }
}