[1765] | 1 | /* vi: set sw=4 ts=4: */
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[821] | 2 | /* options.h */
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| 3 | #ifndef _OPTIONS_H
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| 4 | #define _OPTIONS_H
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| 5 |
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| 6 | #define TYPE_MASK 0x0F
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| 7 |
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| 8 | enum {
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| 9 | OPTION_IP=1,
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| 10 | OPTION_IP_PAIR,
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| 11 | OPTION_STRING,
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[1765] | 12 | #if ENABLE_FEATURE_RFC3397
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| 13 | OPTION_STR1035, /* RFC1035 compressed domain name list */
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| 14 | #endif
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[821] | 15 | OPTION_BOOLEAN,
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| 16 | OPTION_U8,
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| 17 | OPTION_U16,
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| 18 | OPTION_S16,
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| 19 | OPTION_U32,
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| 20 | OPTION_S32
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| 21 | };
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| 22 |
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| 23 | #define OPTION_REQ 0x10 /* have the client request this option */
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| 24 | #define OPTION_LIST 0x20 /* There can be a list of 1 or more of these */
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| 25 |
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[1765] | 26 | /*****************************************************************/
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| 27 | /* Do not modify below here unless you know what you are doing!! */
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| 28 | /*****************************************************************/
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| 29 |
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| 30 | /* DHCP protocol -- see RFC 2131 */
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| 31 | #define SERVER_PORT 67
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| 32 | #define CLIENT_PORT 68
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| 33 |
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| 34 | #define DHCP_MAGIC 0x63825363
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| 35 |
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| 36 | /* DHCP option codes (partial list) */
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| 37 | #define DHCP_PADDING 0x00
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| 38 | #define DHCP_SUBNET 0x01
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| 39 | #define DHCP_TIME_OFFSET 0x02
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| 40 | #define DHCP_ROUTER 0x03
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| 41 | #define DHCP_TIME_SERVER 0x04
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| 42 | #define DHCP_NAME_SERVER 0x05
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| 43 | #define DHCP_DNS_SERVER 0x06
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| 44 | #define DHCP_LOG_SERVER 0x07
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| 45 | #define DHCP_COOKIE_SERVER 0x08
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| 46 | #define DHCP_LPR_SERVER 0x09
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| 47 | #define DHCP_HOST_NAME 0x0c
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| 48 | #define DHCP_BOOT_SIZE 0x0d
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| 49 | #define DHCP_DOMAIN_NAME 0x0f
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| 50 | #define DHCP_SWAP_SERVER 0x10
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| 51 | #define DHCP_ROOT_PATH 0x11
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| 52 | #define DHCP_IP_TTL 0x17
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| 53 | #define DHCP_MTU 0x1a
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| 54 | #define DHCP_BROADCAST 0x1c
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| 55 | #define DHCP_NTP_SERVER 0x2a
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| 56 | #define DHCP_WINS_SERVER 0x2c
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| 57 | #define DHCP_REQUESTED_IP 0x32
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| 58 | #define DHCP_LEASE_TIME 0x33
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| 59 | #define DHCP_OPTION_OVER 0x34
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| 60 | #define DHCP_MESSAGE_TYPE 0x35
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| 61 | #define DHCP_SERVER_ID 0x36
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| 62 | #define DHCP_PARAM_REQ 0x37
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| 63 | #define DHCP_MESSAGE 0x38
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| 64 | #define DHCP_MAX_SIZE 0x39
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| 65 | #define DHCP_T1 0x3a
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| 66 | #define DHCP_T2 0x3b
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| 67 | #define DHCP_VENDOR 0x3c
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| 68 | #define DHCP_CLIENT_ID 0x3d
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| 69 | #define DHCP_FQDN 0x51
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| 70 |
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| 71 | #define DHCP_END 0xFF
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| 72 |
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| 73 |
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| 74 | #define BOOTREQUEST 1
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| 75 | #define BOOTREPLY 2
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| 76 |
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| 77 | #define ETH_10MB 1
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| 78 | #define ETH_10MB_LEN 6
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| 79 |
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| 80 | #define DHCPDISCOVER 1
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| 81 | #define DHCPOFFER 2
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| 82 | #define DHCPREQUEST 3
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| 83 | #define DHCPDECLINE 4
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| 84 | #define DHCPACK 5
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| 85 | #define DHCPNAK 6
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| 86 | #define DHCPRELEASE 7
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| 87 | #define DHCPINFORM 8
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| 88 |
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| 89 | #define BROADCAST_FLAG 0x8000
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| 90 |
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| 91 | #define OPTION_FIELD 0
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| 92 | #define FILE_FIELD 1
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| 93 | #define SNAME_FIELD 2
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| 94 |
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| 95 | /* miscellaneous defines */
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| 96 | #define OPT_CODE 0
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| 97 | #define OPT_LEN 1
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| 98 | #define OPT_DATA 2
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| 99 |
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[821] | 100 | struct dhcp_option {
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[1765] | 101 | char name[12];
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[821] | 102 | char flags;
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| 103 | uint8_t code;
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| 104 | };
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| 105 |
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[1765] | 106 | extern const struct dhcp_option dhcp_options[];
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| 107 | extern const unsigned char option_lengths[];
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[821] | 108 |
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| 109 | uint8_t *get_option(struct dhcpMessage *packet, int code);
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| 110 | int end_option(uint8_t *optionptr);
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| 111 | int add_option_string(uint8_t *optionptr, uint8_t *string);
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| 112 | int add_simple_option(uint8_t *optionptr, uint8_t code, uint32_t data);
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[1765] | 113 | #if ENABLE_FEATURE_RFC3397
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| 114 | char *dname_dec(const uint8_t *cstr, int clen, const char *pre);
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| 115 | uint8_t *dname_enc(const uint8_t *cstr, int clen, const char *src, int *retlen);
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| 116 | #endif
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[821] | 117 |
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| 118 | #endif
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