Services: Move to Userland/Services/

1 files changed, 115 insertions, 0 deletions

diff --git a/Userland/Services/LookupServer/DNSPacket.h b/Userland/Services/LookupServer/DNSPacket.h
new file mode 100644
index 0000000000..1cddc372c7
--- /dev/null
+++ b/Userland/Services/LookupServer/DNSPacket.h
@@ -0,0 +1,115 @@
+/*
+ * 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/Endian.h>
+#include <AK/Types.h>
+
+class [[gnu::packed]] DNSPacket {
+public:
+    DNSPacket()
+        : m_recursion_desired(false)
+        , m_truncated(false)
+        , m_authoritative_answer(false)
+        , m_opcode(0)
+        , m_query_or_response(false)
+        , m_response_code(0)
+        , m_checking_disabled(false)
+        , m_authenticated_data(false)
+        , m_zero(false)
+        , m_recursion_available(false)
+    {
+    }
+
+    u16 id() const { return m_id; }
+    void set_id(u16 w) { m_id = w; }
+
+    bool recursion_desired() const { return m_recursion_desired; }
+    void set_recursion_desired(bool b) { m_recursion_desired = b; }
+
+    bool is_truncated() const { return m_truncated; }
+    void set_truncated(bool b) { m_truncated = b; }
+
+    bool is_authoritative_answer() const { return m_authoritative_answer; }
+    void set_authoritative_answer(bool b) { m_authoritative_answer = b; }
+
+    u8 opcode() const { return m_opcode; }
+    void set_opcode(u8 b) { m_opcode = b; }
+
+    bool is_query() const { return !m_query_or_response; }
+    bool is_response() const { return m_query_or_response; }
+    void set_is_query() { m_query_or_response = false; }
+    void set_is_response() { m_query_or_response = true; }
+
+    u8 response_code() const { return m_response_code; }
+    void set_response_code(u8 b) { m_response_code = b; }
+
+    bool checking_disabled() const { return m_checking_disabled; }
+    void set_checking_disabled(bool b) { m_checking_disabled = b; }
+
+    bool is_authenticated_data() const { return m_authenticated_data; }
+    void set_authenticated_data(bool b) { m_authenticated_data = b; }
+
+    bool is_recursion_available() const { return m_recursion_available; }
+    void set_recursion_available(bool b) { m_recursion_available = b; }
+
+    u16 question_count() const { return m_question_count; }
+    void set_question_count(u16 w) { m_question_count = w; }
+
+    u16 answer_count() const { return m_answer_count; }
+    void set_answer_count(u16 w) { m_answer_count = w; }
+
+    u16 authority_count() const { return m_authority_count; }
+    void set_authority_count(u16 w) { m_authority_count = w; }
+
+    u16 additional_count() const { return m_additional_count; }
+    void set_additional_count(u16 w) { m_additional_count = w; }
+
+    void* payload() { return this + 1; }
+    const void* payload() const { return this + 1; }
+
+private:
+    NetworkOrdered<u16> m_id;
+
+    bool m_recursion_desired : 1;
+    bool m_truncated : 1;
+    bool m_authoritative_answer : 1;
+    u8 m_opcode : 4;
+    bool m_query_or_response : 1;
+    u8 m_response_code : 4;
+    bool m_checking_disabled : 1;
+    bool m_authenticated_data : 1;
+    bool m_zero : 1;
+    bool m_recursion_available : 1;
+
+    NetworkOrdered<u16> m_question_count;
+    NetworkOrdered<u16> m_answer_count;
+    NetworkOrdered<u16> m_authority_count;
+    NetworkOrdered<u16> m_additional_count;
+};
+
+static_assert(sizeof(DNSPacket) == 12);