networking/udhcp/options.h

/* vi: set sw=4 ts=4: */
/* options.h */
#ifndef _OPTIONS_H
#define _OPTIONS_H

#define TYPE_MASK	0x0F

enum {
	OPTION_IP=1,
	OPTION_IP_PAIR,
	OPTION_STRING,
	OPTION_BOOLEAN,
	OPTION_U8,
	OPTION_U16,
	OPTION_S16,
	OPTION_U32,
	OPTION_S32
};

#define OPTION_REQ	0x10 /* have the client request this option */
#define OPTION_LIST	0x20 /* There can be a list of 1 or more of these */

struct dhcp_option {
	char name[12];
	char flags;
	uint8_t code;
};

extern const struct dhcp_option dhcp_options[];
extern const unsigned char option_lengths[];

uint8_t *get_option(struct dhcpMessage *packet, int code);
int end_option(uint8_t *optionptr);
int add_option_string(uint8_t *optionptr, uint8_t *string);
int add_simple_option(uint8_t *optionptr, uint8_t code, uint32_t data);

#endif
1	/* vi: set sw=4 ts=4: */
2	/* options.h */
3	#ifndef _OPTIONS_H
4	#define _OPTIONS_H
5
6	#define TYPE_MASK 0x0F
7
8	enum {
9	OPTION_IP=1,
10	OPTION_IP_PAIR,
11	OPTION_STRING,
12	OPTION_BOOLEAN,
13	OPTION_U8,
14	OPTION_U16,
15	OPTION_S16,
16	OPTION_U32,
17	OPTION_S32
18	};
19
20	#define OPTION_REQ 0x10 /* have the client request this option */
21	#define OPTION_LIST 0x20 /* There can be a list of 1 or more of these */
22
23	struct dhcp_option {
24	char name[12];
25	char flags;
26	uint8_t code;
27	};
28
29	extern const struct dhcp_option dhcp_options[];
30	extern const unsigned char option_lengths[];
31
32	uint8_t get_option(struct dhcpMessage packet, int code);
33	int end_option(uint8_t *optionptr);
34	int add_option_string(uint8_t optionptr, uint8_t string);
35	int add_simple_option(uint8_t *optionptr, uint8_t code, uint32_t data);
36
37	#endif