1 files changed, 82 insertions, 0 deletions
diff --git a/Userland/Services/TelnetServer/Command.h b/Userland/Services/TelnetServer/Command.h
new file mode 100644
index 0000000000..25afb1fe22
--- /dev/null
+++ b/Userland/Services/TelnetServer/Command.h
@@ -0,0 +1,82 @@
+/*
+ * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#pragma once
+
+#include <AK/String.h>
+#include <AK/StringBuilder.h>
+#include <AK/Types.h>
+
+#define CMD_WILL 0xfb
+#define CMD_WONT 0xfc
+#define CMD_DO 0xfd
+#define CMD_DONT 0xfe
+#define SUB_ECHO 0x01
+#define SUB_SUPPRESS_GO_AHEAD 0x03
+
+struct Command {
+    u8 command;
+    u8 subcommand;
+
+    String to_string() const
+    {
+        StringBuilder builder;
+
+        switch (command) {
+        case CMD_WILL:
+            builder.append("WILL");
+            break;
+        case CMD_WONT:
+            builder.append("WONT");
+            break;
+        case CMD_DO:
+            builder.append("DO");
+            break;
+        case CMD_DONT:
+            builder.append("DONT");
+            break;
+        default:
+            builder.append(String::format("UNKNOWN<%02x>", command));
+            break;
+        }
+
+        builder.append(" ");
+
+        switch (subcommand) {
+        case SUB_ECHO:
+            builder.append("ECHO");
+            break;
+        case SUB_SUPPRESS_GO_AHEAD:
+            builder.append("SUPPRESS_GO_AHEAD");
+            break;
+        default:
+            builder.append(String::format("UNKNOWN<%02x>", subcommand));
+            break;
+        }
+
+        return builder.to_string();
+    };
+};