d9571c62cf
Allow the user to specify the vendor identification option value using the -V switch. The default value is still "ndhc".
94 lines
3.2 KiB
C
94 lines
3.2 KiB
C
/* options.h - DHCP options handling
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* Time-stamp: <2011-03-30 16:34:55 nk>
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*
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* (c) 2004-2011 Nicholas J. Kain <njkain at gmail dot com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#ifndef OPTIONS_H_
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#define OPTIONS_H_
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#include "packet.h"
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/* DHCP option codes (partial list) */
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#define DHCP_PADDING 0x00
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#define DHCP_SUBNET 0x01
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#define DHCP_TIME_OFFSET 0x02
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#define DHCP_ROUTER 0x03
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#define DHCP_TIME_SERVER 0x04
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#define DHCP_NAME_SERVER 0x05
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#define DHCP_DNS_SERVER 0x06
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#define DHCP_LOG_SERVER 0x07
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#define DHCP_COOKIE_SERVER 0x08
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#define DHCP_LPR_SERVER 0x09
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#define DHCP_HOST_NAME 0x0c
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#define DHCP_BOOT_SIZE 0x0d
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#define DHCP_DOMAIN_NAME 0x0f
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#define DHCP_SWAP_SERVER 0x10
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#define DHCP_ROOT_PATH 0x11
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#define DHCP_IP_TTL 0x17
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#define DHCP_MTU 0x1a
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#define DHCP_BROADCAST 0x1c
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#define DHCP_NIS_DOMAIN 0x28
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#define DHCP_NIS_SERVER 0x29
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#define DHCP_NTP_SERVER 0x2a
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#define DHCP_WINS_SERVER 0x2c
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#define DHCP_REQUESTED_IP 0x32
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#define DHCP_LEASE_TIME 0x33
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#define DHCP_OPTION_OVERLOAD 0x34
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#define DHCP_MESSAGE_TYPE 0x35
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#define DHCP_SERVER_ID 0x36
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#define DHCP_PARAM_REQ 0x37
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#define DHCP_MESSAGE 0x38
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#define DHCP_MAX_SIZE 0x39
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#define DHCP_T1 0x3a
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#define DHCP_T2 0x3b
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#define DHCP_VENDOR 0x3c
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#define DHCP_CLIENT_ID 0x3d
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#define DHCP_TFTP_SERVER_NAME 0x42
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#define DHCP_BOOT_FILE 0x43
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#define DHCP_USER_CLASS 0x4d
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#define DHCP_FQDN 0x51
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#define DHCP_DOMAIN_SEARCH 0x77
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#define DHCP_SIP_SERVERS 0x78
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#define DHCP_STATIC_ROUTES 0x79
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#define DHCP_WPAD 0xfc
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#define DHCP_END 0xff
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enum option_type {
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OPTION_NONE = 0,
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OPTION_IP = 1,
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OPTION_STRING = 2,
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OPTION_U8 = 3,
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OPTION_U16 = 4,
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OPTION_S16 = 5,
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OPTION_U32 = 6,
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OPTION_S32 = 7
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};
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const char *option_name(uint8_t code);
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enum option_type option_type(uint8_t code);
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uint8_t option_length(uint8_t code);
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int option_valid_list(uint8_t code);
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uint8_t *get_option_data(struct dhcpmsg *packet, int code, ssize_t *optlen);
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ssize_t get_end_option_idx(struct dhcpmsg *packet);
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size_t add_option_string(struct dhcpmsg *packet, uint8_t code, char *str,
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size_t slen);
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size_t add_u32_option(struct dhcpmsg *packet, uint8_t code, uint32_t data);
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size_t add_option_request_list(struct dhcpmsg *packet);
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#endif
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