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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2007 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
* Copyright (c) 2016, Chris Fraire <cfraire@me.com>.
*/
#ifndef _DHCP_IMPL_H
#define _DHCP_IMPL_H
/*
* Common definitions used by Sun DHCP implementations
*/
#ifdef __cplusplus
extern "C" {
#endif
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netinet/udp.h>
#include <netinet/dhcp.h>
#include <netinet/dhcp6.h>
#include <dhcp_symbol_common.h>
#include <sys/sunos_dhcp_class.h>
/* Packet fields */
#define CD_PACKET_START 0
#define CD_POPCODE 0 /* packet opcode */
#define CD_PHTYPE 1 /* packet header type */
#define CD_PHLEN 2 /* packet header len */
#define CD_PHOPS 3 /* packet header len */
#define CD_PXID 4 /* packet hops */
#define CD_PSECS 8 /* packet xid */
#define CD_PFLAGS 10 /* packet secs */
#define CD_PCIADDR 12 /* packet flags */
#define CD_YIADDR 16 /* client's ip address */
#define CD_SIADDR 20 /* Bootserver's ip address */
#define CD_GIADDR 24 /* BOOTP relay agent address */
#define CD_PCHADDR 28 /* BOOTP relay agent address */
#define CD_SNAME 44 /* Hostname of Bootserver, or opts */
#define CD_BOOTFILE 108 /* File to boot or opts */
#define CD_PCOOKIE 236 /* packet cookie */
#define CD_POPTIONS 240 /* packet options */
#define CD_PACKET_END CD_POPTIONS
/* Internal server options */
#define CD_INTRNL_START 1024
#define CD_BOOL_HOSTNAME 1024 /* Entry wants hostname (Nameserv) */
#define CD_BOOL_LEASENEG 1025 /* Entry's lease is negotiable */
#define CD_BOOL_ECHO_VCLASS 1026 /* Echo Vendor class back to Entry */
#define CD_BOOTPATH 1027 /* prefix path to File to boot */
#define CD_INTRNL_END 1027
/* Error codes that could be generated while parsing packets */
#define DHCP_ERR_OFFSET 512
#define DHCP_GARBLED_MSG_TYPE (DHCP_ERR_OFFSET+0)
#define DHCP_WRONG_MSG_TYPE (DHCP_ERR_OFFSET+1)
#define DHCP_BAD_OPT_OVLD (DHCP_ERR_OFFSET+2)
/*
* Arbitrary "maximum" client ID length (in bytes), used by various bits
* of the standalone code. This needs to go away someday.
*/
#define DHCP_MAX_CID_LEN 64
/*
* Generic DHCP option structure.
*/
typedef struct {
uint8_t code;
uint8_t len;
uint8_t value[1];
} DHCP_OPT;
/*
* Defines the size of DHCP_OPT code + len
*/
#define DHCP_OPT_META_LEN 2
typedef union sockaddr46_s {
struct sockaddr_in v4;
struct sockaddr_in6 v6;
} sockaddr46_t;
/*
* Generic DHCP packet list. Ensure that _REENTRANT bracketed code stays at
* bottom of this definition - the client doesn't include it. Scan.c in
* libdhcp isn't aware of it either...
*
* The PKT * pointer here actually points to a dhcpv6_message_t if the packet
* is DHCPv6. We assume that PKT * the same or stricter alignment
* requirements, and that the unused elements are not a significant burden.
*/
#define MAX_PKT_LIST 5 /* maximum list size */
typedef struct dhcp_list {
struct dhcp_list *next; /* keep first and in this */
struct dhcp_list *prev; /* order for insque/remque */
PKT *pkt; /* client packet */
uint_t len; /* packet len */
int rfc1048; /* RFC1048 options - boolean */
uint8_t offset; /* BOOTP packet offset */
uint8_t isv6; /* DHCPv6 packet - boolean */
/*
* standard/site options
*/
DHCP_OPT *opts[DHCP_LAST_OPT + 1];
/*
* Vendor specific options (client only)
*/
DHCP_OPT *vs[VS_OPTION_END - VS_OPTION_START + 1];
struct in_addr off_ip; /* Address OFFERed */
uint_t ifindex; /* received ifindex (if any) */
sockaddr46_t pktfrom; /* source (peer) address on input */
sockaddr46_t pktto; /* destination (local) address */
} PKT_LIST;
extern int dhcp_options_scan(PKT_LIST *, boolean_t);
extern boolean_t dhcp_getinfo_pl(PKT_LIST *, uchar_t, uint16_t, uint16_t,
void *, size_t *);
extern dhcpv6_option_t *dhcpv6_find_option(const void *, size_t,
const dhcpv6_option_t *, uint16_t, uint_t *);
extern dhcpv6_option_t *dhcpv6_pkt_option(const PKT_LIST *,
const dhcpv6_option_t *, uint16_t, uint_t *);
#ifdef __cplusplus
}
#endif
#endif /* _DHCP_IMPL_H */
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