70 lines
2.6 KiB
C
70 lines
2.6 KiB
C
// Copyright 2004-2018 Nicholas J. Kain <njkain at gmail dot com>
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// SPDX-License-Identifier: MIT
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#ifndef OPTIONS_H_
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#define OPTIONS_H_
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#include "dhcp.h"
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#define DCODE_PADDING 0x00
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#define DCODE_SUBNET 0x01
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#define DCODE_TIMEZONE 0x02
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#define DCODE_ROUTER 0x03
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#define DCODE_DNS 0x06
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#define DCODE_LPRSVR 0x09
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#define DCODE_HOSTNAME 0x0c
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#define DCODE_DOMAIN 0x0f
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#define DCODE_IPTTL 0x17
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#define DCODE_MTU 0x1a
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#define DCODE_BROADCAST 0x1c
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#define DCODE_NTPSVR 0x2a
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#define DCODE_WINS 0x2c
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#define DCODE_REQIP 0x32
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#define DCODE_LEASET 0x33
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#define DCODE_OVERLOAD 0x34
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#define DCODE_MSGTYPE 0x35
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#define DCODE_SERVER_ID 0x36
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#define DCODE_PARAM_REQ 0x37
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#define DCODE_MAX_SIZE 0x39
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#define DCODE_VENDOR 0x3c
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#define DCODE_CLIENT_ID 0x3d
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#define DCODE_END 0xff
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#define MAX_DOPT_SIZE 500
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size_t get_dhcp_opt(const struct dhcpmsg * const packet, uint8_t code,
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uint8_t *dbuf, size_t dlen);
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ssize_t get_end_option_idx(const struct dhcpmsg * const packet);
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size_t add_option_string(struct dhcpmsg *packet, uint8_t code,
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const char *str, 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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#ifdef NDHS_BUILD
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size_t add_option_domain_name(struct dhcpmsg *packet,
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const char * const dom, size_t domlen);
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void add_option_subnet_mask(struct dhcpmsg *packet, uint32_t subnet);
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void add_option_broadcast(struct dhcpmsg *packet, uint32_t bc);
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#endif
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void add_option_msgtype(struct dhcpmsg *packet, uint8_t type);
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void add_option_reqip(struct dhcpmsg *packet, uint32_t ip);
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void add_option_serverid(struct dhcpmsg *packet, uint32_t sid);
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void add_option_clientid(struct dhcpmsg *packet,
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const char * const clientid, size_t clen);
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#ifndef NDHS_BUILD
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void add_option_maxsize(struct dhcpmsg *packet);
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void add_option_vendor(struct dhcpmsg *packet, const char * const vendor,
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size_t vsize);
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void add_option_hostname(struct dhcpmsg *packet, const char * const hostname,
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size_t hsize);
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#endif
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uint32_t get_option_router(const struct dhcpmsg * const packet);
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uint8_t get_option_msgtype(const struct dhcpmsg * const packet);
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uint32_t get_option_serverid(const struct dhcpmsg * const packet, int *found);
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uint32_t get_option_leasetime(const struct dhcpmsg *const packet);
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size_t get_option_clientid(const struct dhcpmsg * const packet,
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char *cbuf, size_t clen);
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#endif
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