From 5f404b1e680cdac9f8149e73296d1d89044af773 Mon Sep 17 00:00:00 2001 From: Patrik Flykt Date: Mon, 9 Dec 2013 23:43:07 +0200 Subject: [PATCH] dhcp: Add DHCP protocol structures and initial defines Create a new directory to host DHCP components. --- src/dhcp/protocol.h | 104 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 104 insertions(+) create mode 100644 src/dhcp/protocol.h diff --git a/src/dhcp/protocol.h b/src/dhcp/protocol.h new file mode 100644 index 000000000..d37546721 --- /dev/null +++ b/src/dhcp/protocol.h @@ -0,0 +1,104 @@ +/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ + +#pragma once + +/*** + This file is part of systemd. + + Copyright (C) 2013 Intel Corporation. All rights reserved. + + systemd is free software; you can redistribute it and/or modify it + under the terms of the GNU Lesser General Public License as published by + the Free Software Foundation; either version 2.1 of the License, or + (at your option) any later version. + + systemd 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 + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public License + along with systemd; If not, see . +***/ + +#include +#include +#include + +#include "macro.h" +#include "sparse-endian.h" + +struct DHCPMessage { + uint8_t op; + uint8_t htype; + uint8_t hlen; + uint8_t hops; + be32_t xid; + be16_t secs; + be16_t flags; + uint32_t ciaddr; + uint32_t yiaddr; + uint32_t siaddr; + uint32_t giaddr; + uint8_t chaddr[16]; + uint8_t sname[64]; + uint8_t file[128]; +} _packed_; + +typedef struct DHCPMessage DHCPMessage; + +struct DHCPPacket { + struct iphdr ip; + struct udphdr udp; + DHCPMessage dhcp; +} _packed_; + +typedef struct DHCPPacket DHCPPacket; + +enum DHCPState { + DHCP_STATE_INIT = 0, + DHCP_STATE_SELECTING = 1, + DHCP_STATE_INIT_REBOOT = 2, + DHCP_STATE_REBOOTING = 3, + DHCP_STATE_REQUESTING = 4, + DHCP_STATE_BOUND = 5, + DHCP_STATE_RENEWING = 6, + DHCP_STATE_REBINDING = 7, +}; + +typedef enum DHCPState DHCPState; + +enum { + BOOTREQUEST = 1, + BOOTREPLY = 2, +}; + +enum { + DHCP_DISCOVER = 1, + DHCP_OFFER = 2, + DHCP_REQUEST = 3, + DHCP_DECLINE = 4, + DHCP_ACK = 5, + DHCP_NAK = 6, + DHCP_RELEASE = 7, +}; + +enum { + DHCP_OVERLOAD_FILE = 1, + DHCP_OVERLOAD_SNAME = 2, +}; + +enum { + DHCP_OPTION_PAD = 0, + DHCP_OPTION_SUBNET_MASK = 1, + DHCP_OPTION_ROUTER = 3, + DHCP_OPTION_DOMAIN_NAME_SERVER = 6, + DHCP_OPTION_HOST_NAME = 12, + DHCP_OPTION_DOMAIN_NAME = 15, + DHCP_OPTION_NTP_SERVER = 42, + DHCP_OPTION_REQUESTED_IP_ADDRESS = 50, + DHCP_OPTION_OVERLOAD = 52, + DHCP_OPTION_MESSAGE_TYPE = 53, + DHCP_OPTION_PARAMETER_REQUEST_LIST = 55, + DHCP_OPTION_END = 255, +}; -- 2.30.2