223 lines
5.6 KiB
C
223 lines
5.6 KiB
C
#ifndef _QSE_DHCP_DHCP4MSG_H_
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#define _QSE_DHCP_DHCP4MSG_H_
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#include <qse/types.h>
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#include <qse/macros.h>
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#define QSE_DHCP4_SERVER_PORT 67
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#define QSE_DHCP4_CLIENT_PORT 68
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#define QSE_DHCP4_MAGIC_COOKIE 0x63825363
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/* operation code */
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enum qse_dhcp4_op_t
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{
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QSE_DHCP4_OP_BOOTREQUEST = 1,
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QSE_DHCP4_OP_BOOTREPLY = 2
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};
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enum qse_dhcp4_htype_t
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{
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QSE_DHCP4_HTYPE_ETHERNET = 1,
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QSE_DHCP4_HTYPE_IEEE802 = 6,
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QSE_DHCP4_HTYPE_ARCNET = 7,
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QSE_DHCP4_HTYPE_APPLETALK = 8,
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QSE_DHCP4_HTYPE_HDLC = 17,
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QSE_DHCP4_HTYPE_ATM = 19,
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QSE_DHCP4_HTYPE_INFINIBAND = 32
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};
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/* option codes (partial) */
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enum qse_dhcp4_opt_t
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{
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QSE_DHCP4_OPT_PADDING = 0x00,
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QSE_DHCP4_OPT_SUBNET = 0x01,
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QSE_DHCP4_OPT_TIME_OFFSET = 0x02,
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QSE_DHCP4_OPT_ROUTER = 0x03,
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QSE_DHCP4_OPT_TIME_SERVER = 0x04,
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QSE_DHCP4_OPT_NAME_SERVER = 0x05,
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QSE_DHCP4_OPT_DNS_SERVER = 0x06,
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QSE_DHCP4_OPT_LOG_SERVER = 0x07,
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QSE_DHCP4_OPT_COOKIE_SERVER = 0x08,
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QSE_DHCP4_OPT_LPR_SERVER = 0x09,
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QSE_DHCP4_OPT_HOST_NAME = 0x0c,
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QSE_DHCP4_OPT_BOOT_SIZE = 0x0d,
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QSE_DHCP4_OPT_DOMAIN_NAME = 0x0f,
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QSE_DHCP4_OPT_SWAP_SERVER = 0x10,
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QSE_DHCP4_OPT_ROOT_PATH = 0x11,
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QSE_DHCP4_OPT_IP_TTL = 0x17,
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QSE_DHCP4_OPT_MTU = 0x1a,
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QSE_DHCP4_OPT_BROADCAST = 0x1c,
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QSE_DHCP4_OPT_NTP_SERVER = 0x2a,
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QSE_DHCP4_OPT_WINS_SERVER = 0x2c,
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QSE_DHCP4_OPT_REQUESTED_IPADDR = 0x32,
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QSE_DHCP4_OPT_LEASE_TIME = 0x33,
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QSE_DHCP4_OPT_OVERLOAD = 0x34, /* overload sname or file */
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QSE_DHCP4_OPT_MESSAGE_TYPE = 0x35,
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QSE_DHCP4_OPT_SERVER_ID = 0x36,
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QSE_DHCP4_OPT_PARAM_REQ = 0x37,
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QSE_DHCP4_OPT_MESSAGE = 0x38,
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QSE_DHCP4_OPT_MAX_SIZE = 0x39,
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QSE_DHCP4_OPT_T1 = 0x3a,
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QSE_DHCP4_OPT_T2 = 0x3b,
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QSE_DHCP4_OPT_VENDOR = 0x3c,
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QSE_DHCP4_OPT_CLIENT_ID = 0x3d,
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QSE_DHCP4_OPT_RELAY = 0x52,
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QSE_DHCP4_OPT_SUBNET_SELECTION = 0x76,
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QSE_DHCP4_OPT_END = 0xFF
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};
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/* flags for QSE_DHCP4_OPT_OVERLOAD */
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enum qse_dhcp4_opt_overload_t
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{
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QSE_DHCP4_OPT_OVERLOAD_FILE = (1 << 0),
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QSE_DHCP4_OPT_OVERLOAD_SNAME = (1 << 1)
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};
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/* flags for QSE_DHCP4_OPT_OVERLOAD */
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enum qse_dhcp4_opt_relay_t
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{
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QSE_DHCP4_OPT_RELAY_CIRCUIT_ID = 1,
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QSE_DHCP4_OPT_RELAY_REMOTE_ID = 2
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};
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/* message type */
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enum qse_dhcp4_msg_t
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{
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QSE_DHCP4_MSG_DISCOVER = 1,
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QSE_DHCP4_MSG_OFFER = 2,
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QSE_DHCP4_MSG_REQUEST = 3,
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QSE_DHCP4_MSG_DECLINE = 4,
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QSE_DHCP4_MSG_ACK = 5,
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QSE_DHCP4_MSG_NAK = 6,
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QSE_DHCP4_MSG_RELEASE = 7,
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QSE_DHCP4_MSG_INFORM = 8,
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/*QSE_DHCP4_MSG_RENEW = 9,*/
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QSE_DHCP4_MSG_LEASE_QUERY = 10,
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QSE_DHCP4_MSG_LEASE_UNASSIGNED = 11,
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QSE_DHCP4_MSG_LEASE_UNKNOWN = 12,
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QSE_DHCP4_MSG_LEASE_ACTIVE = 13,
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QSE_DHCP4_MSG_BULK_LEASE_QUERY = 14,
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QSE_DHCP4_MSG_LEASE_QUERY_DONE = 15
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};
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/* --------------------------------------------------- */
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#include <qse/pack1.h>
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/* --------------------------------------------------- */
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struct qse_dhcp4_pkt_hdr_t
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{
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qse_uint8_t op;
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qse_uint8_t htype;
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qse_uint8_t hlen;
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qse_uint8_t hops;
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qse_uint32_t xid; /* transaction id */
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qse_uint16_t secs; /* seconds elapsed */
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qse_uint16_t flags; /* bootp flags */
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qse_uint32_t ciaddr; /* client ip */
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qse_uint32_t yiaddr; /* your ip */
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qse_uint32_t siaddr; /* next server ip */
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qse_uint32_t giaddr; /* relay agent ip */
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qse_uint8_t chaddr[16]; /* client mac */
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char sname[64]; /* server host name */
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char file[128]; /* boot file name */
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/* options are placed after the header.
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* the first four bytes of the options compose a magic cookie
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* 0x63 0x82 0x53 0x63 */
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};
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typedef struct qse_dhcp4_pkt_hdr_t qse_dhcp4_pkt_hdr_t;
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struct qse_dhcp4_opt_hdr_t
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{
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qse_uint8_t code;
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qse_uint8_t len;
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};
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typedef struct qse_dhcp4_opt_hdr_t qse_dhcp4_opt_hdr_t;
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/* --------------------------------------------------- */
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#include <qse/unpack.h>
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/* --------------------------------------------------- */
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typedef int (*qse_dhcp4_opt_walker_t) (qse_dhcp4_opt_hdr_t* opt);
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struct qse_dhcp4_pktinf_t
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{
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qse_dhcp4_pkt_hdr_t* hdr;
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qse_size_t len;
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};
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typedef struct qse_dhcp4_pktinf_t qse_dhcp4_pktinf_t;
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struct qse_dhcp4_pktbuf_t
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{
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qse_dhcp4_pkt_hdr_t* hdr;
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qse_size_t len;
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qse_size_t capa;
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};
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typedef struct qse_dhcp4_pktbuf_t qse_dhcp4_pktbuf_t;
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#ifdef __cplusplus
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extern "C" {
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#endif
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QSE_EXPORT int qse_dhcp4_initialize_pktbuf (
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qse_dhcp4_pktbuf_t* pkt,
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void* buf,
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qse_size_t capa
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);
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QSE_EXPORT int qse_dhcp4_add_option (
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qse_dhcp4_pktbuf_t* pkt,
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int code,
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void* optr, /**< option data pointer */
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qse_uint8_t olen /**< option data length */
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);
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QSE_EXPORT int qse_dhcp4_delete_option (
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qse_dhcp4_pktbuf_t* pkt,
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int code
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);
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QSE_EXPORT void qse_dhcp4_compact_options (
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qse_dhcp4_pktbuf_t* pkt
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);
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#if 0
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QSE_EXPORT int qse_dhcp4_add_options (
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qse_dhcp4_pkt_hdr_t* pkt,
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qse_size_t len,
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qse_size_t max,
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int code,
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qse_uint8_t* optr, /* option data */
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qse_uint8_t olen /* option length */
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);
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#endif
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QSE_EXPORT int qse_dhcp4_walk_options (
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const qse_dhcp4_pktinf_t* pkt,
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qse_dhcp4_opt_walker_t walker
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);
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QSE_EXPORT qse_dhcp4_opt_hdr_t* qse_dhcp4_find_option (
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const qse_dhcp4_pktinf_t* pkt,
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int code
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);
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QSE_EXPORT qse_uint8_t* qse_dhcp4_get_relay_suboption (
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const qse_uint8_t* ptr,
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qse_uint8_t len,
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int code,
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qse_uint8_t* olen
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);
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#ifdef __cplusplus
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}
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#endif
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#endif
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