[apple/xnu.git] / bsd / netinet / ip_fw2_compat.h

/* IPFW backward compatibility */

#ifndef _IP_FW_COMPAT_H_
#define _IP_FW_COMPAT_H_

#if !__LP64__

/* prototypes */
void	ipfw_convert_from_latest(struct ip_fw *curr_rule, void *old_rule, u_int32_t api_version);
int		ipfw_convert_to_latest(struct sockopt *sopt, struct ip_fw *rule, int api_version);
int	ipfw_get_command_and_version(struct sockopt *sopt, int *command, u_int32_t *api_version);


/*
 * ******************************
 * ****** IPFW version one ******
 * ******************************
 */

/*
 * This union structure identifies an interface, either explicitly
 * by name or implicitly by IP address. The flags IP_FW_F_IIFNAME
 * and IP_FW_F_OIFNAME say how to interpret this structure. An
 * interface unit number of -1 matches any unit number, while an
 * IP address of 0.0.0.0 indicates matches any interface.
 *
 * The receive and transmit interfaces are only compared against the
 * the packet if the corresponding bit (IP_FW_F_IIFACE or IP_FW_F_OIFACE)
 * is set. Note some packets lack a receive or transmit interface
 * (in which case the missing "interface" never matches).
 */

union ip_fw_if_compat {
    struct in_addr fu_via_ip;	/* Specified by IP address */
    struct {			/* Specified by interface name */
#define FW_IFNLEN_COMPAT     10 /* need room ! was IFNAMSIZ */
	    char  name[FW_IFNLEN_COMPAT];
	    short unit;		/* -1 means match any unit */
    } fu_via_if_compat;
};

/*
 * Format of an IP firewall descriptor
 *
 * fw_src, fw_dst, fw_smsk, fw_dmsk are always stored in network byte order.
 * fw_flg and fw_n*p are stored in host byte order (of course).
 * Port numbers are stored in HOST byte order.
 */

struct ip_fw_compat {
	u_int32_t version;		/* Version of this structure.  Should always be */
							/* set to IP_FW_CURRENT_API_VERSION by clients. */
	void *context;			/* Context that is usable by user processes to */
							/* identify this rule. */
    u_int64_t fw_pcnt,fw_bcnt;		/* Packet and byte counters */
    struct in_addr fw_src, fw_dst;	/* Source and destination IP addr */
    struct in_addr fw_smsk, fw_dmsk;	/* Mask for src and dest IP addr */
    u_short fw_number;			/* Rule number */
    u_int fw_flg;			/* Flags word */
#define IP_FW_MAX_PORTS_COMPAT	10		/* A reasonable maximum */
	union {
		u_short fw_pts[IP_FW_MAX_PORTS_COMPAT];	/* Array of port numbers to match */
#define IP_FW_ICMPTYPES_MAX_COMPAT	128
#define IP_FW_ICMPTYPES_DIM_COMPAT	(IP_FW_ICMPTYPES_MAX_COMPAT / (sizeof(unsigned) * 8))
		unsigned fw_icmptypes[IP_FW_ICMPTYPES_DIM_COMPAT]; /* ICMP types bitmap */
	} fw_uar_compat;
    u_int fw_ipflg;			/* IP flags word */
    u_char fw_ipopt,fw_ipnopt;		/* IP options set/unset */
    u_char fw_tcpopt,fw_tcpnopt;	/* TCP options set/unset */
    u_char fw_tcpf,fw_tcpnf;		/* TCP flags set/unset */
    long timestamp;			/* timestamp (tv_sec) of last match */
    union ip_fw_if_compat fw_in_if, fw_out_if;	/* Incoming and outgoing interfaces */
    union {
		u_short fu_divert_port;		/* Divert/tee port (options IPDIVERT) */
		u_short fu_pipe_nr;		/* queue number (option DUMMYNET) */
		u_short fu_skipto_rule;		/* SKIPTO command rule number */
		u_short fu_reject_code;		/* REJECT response code */
		struct sockaddr_in fu_fwd_ip;
    } fw_un_compat;
    u_char fw_prot;			/* IP protocol */
	/*
	 * N'of src ports and # of dst ports in ports array (dst ports
	 * follow src ports; max of 10 ports in all; count of 0 means
	 * match all ports)
	 */
    u_char fw_nports;
    void *pipe_ptr;                    /* flow_set ptr for dummynet pipe */
    void *next_rule_ptr ;              /* next rule in case of match */
    uid_t fw_uid;			/* uid to match */
    int fw_logamount;			/* amount to log */
    u_int64_t fw_loghighest;		/* highest number packet to log */
};

/*
 * extended ipfw structure... some fields in the original struct
 * can be used to pass parameters up/down, namely pointers
 *     void *pipe_ptr
 *     void *next_rule_ptr 
 * some others can be used to pass parameters down, namely counters etc.
 *     u_int64_t fw_pcnt,fw_bcnt;
 *     long timestamp;
 */

struct ip_fw_ext_compat {             /* extended structure */
    struct ip_fw rule;      /* must be at offset 0 */
    long    dont_match_prob;        /* 0x7fffffff means 1.0, always fail */
    u_int   dyn_type;  /* type for dynamic rule */
};

struct ip_fw_chain_compat {
	LIST_ENTRY(ip_fw_chain_compat) next;
	struct ip_fw_compat *rule;
};

/*
 * dynamic ipfw rule
 */
struct ipfw_dyn_rule_compat {
    struct ipfw_dyn_rule *next ;

    struct ipfw_flow_id id ;
    struct ipfw_flow_id mask ;
    struct ip_fw_chain_compat *chain ;		/* pointer to parent rule	*/
    u_int32_t type ;			/* rule type			*/
    u_int32_t expire ;			/* expire time			*/
    u_int64_t pcnt, bcnt;		/* match counters		*/
    u_int32_t bucket ;			/* which bucket in hash table	*/
    u_int32_t state ;			/* state of this rule (typ. a   */
					/* combination of TCP flags)	*/
} ;

#define IP_FW_GETNSRCP_COMPAT(rule)		((rule)->fw_nports & 0x0f)
#define IP_FW_SETNSRCP_COMPAT(rule, n)		do {				\
					  (rule)->fw_nports &= ~0x0f;	\
					  (rule)->fw_nports |= (n);	\
					} while (0)
#define IP_FW_GETNDSTP_COMPAT(rule)		((rule)->fw_nports >> 4)
#define IP_FW_SETNDSTP_COMPAT(rule, n)		do {				\
					  (rule)->fw_nports &= ~0xf0;	\
					  (rule)->fw_nports |= (n) << 4;\
					} while (0)

#define fw_divert_port_compat	fw_un_compat.fu_divert_port
#define fw_skipto_rule_compat	fw_un_compat.fu_skipto_rule
#define fw_reject_code_compat	fw_un_compat.fu_reject_code
#define fw_pipe_nr_compat	fw_un_compat.fu_pipe_nr
#define fw_fwd_ip_compat	fw_un_compat.fu_fwd_ip

/*
 * Values for "flags" field .
 */
#define IP_FW_F_COMMAND_COMPAT 0x000000ff	/* Mask for type of chain entry:	*/
#define IP_FW_F_DENY_COMPAT	0x00000000	/* This is a deny rule			*/
#define IP_FW_F_REJECT_COMPAT	0x00000001	/* Deny and send a response packet	*/
#define IP_FW_F_ACCEPT_COMPAT	0x00000002	/* This is an accept rule		*/
#define IP_FW_F_COUNT_COMPAT	0x00000003	/* This is a count rule			*/
#define IP_FW_F_DIVERT_COMPAT	0x00000004	/* This is a divert rule		*/
#define IP_FW_F_TEE_COMPAT	0x00000005	/* This is a tee rule			*/
#define IP_FW_F_SKIPTO_COMPAT	0x00000006	/* This is a skipto rule		*/
#define IP_FW_F_FWD_COMPAT	0x00000007	/* This is a "change forwarding address" rule */
#define IP_FW_F_PIPE_COMPAT	0x00000008	/* This is a dummynet rule */
#define IP_FW_F_QUEUE_COMPAT	0x00000009	/* This is a dummynet queue */

#define IP_FW_F_IN_COMPAT	0x00000100	/* Check inbound packets		*/
#define IP_FW_F_OUT_COMPAT	0x00000200	/* Check outbound packets		*/
#define IP_FW_F_IIFACE_COMPAT	0x00000400	/* Apply inbound interface test		*/
#define IP_FW_F_OIFACE_COMPAT	0x00000800	/* Apply outbound interface test	*/

#define IP_FW_F_PRN_COMPAT	0x00001000	/* Print if this rule matches		*/

#define IP_FW_F_SRNG_COMPAT	0x00002000	/* The first two src ports are a min	*
					 * and max range (stored in host byte	*
					 * order).				*/

#define IP_FW_F_DRNG_COMPAT	0x00004000	/* The first two dst ports are a min	*
					 * and max range (stored in host byte	*
					 * order).				*/

#define IP_FW_F_FRAG_COMPAT	0x00008000	/* Fragment				*/

#define IP_FW_F_IIFNAME_COMPAT	0x00010000	/* In interface by name/unit (not IP)	*/
#define IP_FW_F_OIFNAME_COMPAT	0x00020000	/* Out interface by name/unit (not IP)	*/

#define IP_FW_F_INVSRC_COMPAT	0x00040000	/* Invert sense of src check		*/
#define IP_FW_F_INVDST_COMPAT	0x00080000	/* Invert sense of dst check		*/

#define IP_FW_F_ICMPBIT_COMPAT 0x00100000	/* ICMP type bitmap is valid		*/

#define IP_FW_F_UID_COMPAT	0x00200000	/* filter by uid			*/

#define IP_FW_F_RND_MATCH_COMPAT 0x00800000	/* probabilistic rule match		*/
#define IP_FW_F_SMSK_COMPAT	0x01000000	/* src-port + mask 			*/
#define IP_FW_F_DMSK_COMPAT	0x02000000	/* dst-port + mask 			*/
#define	IP_FW_BRIDGED_COMPAT	0x04000000	/* only match bridged packets		*/
#define IP_FW_F_KEEP_S_COMPAT	0x08000000	/* keep state	 			*/
#define IP_FW_F_CHECK_S_COMPAT	0x10000000	/* check state	 			*/

#define IP_FW_F_SME_COMPAT	0x20000000	/* source = me				*/
#define IP_FW_F_DME_COMPAT	0x40000000	/* destination = me			*/

#define IP_FW_F_MASK_COMPAT	0x7FFFFFFF	/* All possible flag bits mask		*/

/*
 * Flags for the 'fw_ipflg' field, for comparing values of ip and its protocols.
 */
#define	IP_FW_IF_TCPEST_COMPAT	0x00000020	/* established TCP connection */
#define	IP_FW_IF_TCPMSK_COMPAT	0x00000020	/* mask of all TCP values */

/*
 * Definitions for TCP flags.
 */
#define IP_FW_TCPF_FIN_COMPAT		TH_FIN
#define IP_FW_TCPF_SYN_COMPAT		TH_SYN
#define IP_FW_TCPF_RST_COMPAT		TH_RST
#define IP_FW_TCPF_PSH_COMPAT		TH_PUSH
#define IP_FW_TCPF_ACK_COMPAT		TH_ACK
#define IP_FW_TCPF_URG_COMPAT		TH_URG

/*
 * For backwards compatibility with rules specifying "via iface" but
 * not restricted to only "in" or "out" packets, we define this combination
 * of bits to represent this configuration.
 */

#define IF_FW_F_VIAHACK_COMPAT	(IP_FW_F_IN_COMPAT|IP_FW_F_OUT_COMPAT|IP_FW_F_IIFACE_COMPAT|IP_FW_F_OIFACE_COMPAT)

/*
 * Definitions for REJECT response codes.
 * Values less than 256 correspond to ICMP unreachable codes.
 */
#define IP_FW_REJECT_RST_COMPAT	0x0100		/* TCP packets: send RST */


/*
 * ******************************
 * ****** IPFW version zero *****
 * ******************************
 */

/*
 * This union structure identifies an interface, either explicitly
 * by name or implicitly by IP address. The flags IP_FW_F_IIFNAME
 * and IP_FW_F_OIFNAME say how to interpret this structure. An
 * interface unit number of -1 matches any unit number, while an
 * IP address of 0.0.0.0 indicates matches any interface.
 *
 * The receive and transmit interfaces are only compared against the
 * the packet if the corresponding bit (IP_FW_F_IIFACE or IP_FW_F_OIFACE)
 * is set. Note some packets lack a receive or transmit interface
 * (in which case the missing "interface" never matches).
 */

union ip_old_fw_if {
    struct in_addr fu_via_ip;	/* Specified by IP address */
    struct {			/* Specified by interface name */
#define OLD_FW_IFNLEN     10 /* need room ! was IFNAMSIZ */
	    char  name[OLD_FW_IFNLEN];
	    short unit;		/* -1 means match any unit */
    } fu_via_if;
};

/*
 * Format of an IP firewall descriptor
 *
 * fw_src, fw_dst, fw_smsk, fw_dmsk are always stored in network byte order.
 * fw_flg and fw_n*p are stored in host byte order (of course).
 * Port numbers are stored in HOST byte order.
 * Warning: setsockopt() will fail if sizeof(struct ip_fw) > MLEN (108)
 */

struct ip_old_fw {
    u_int64_t fw_pcnt,fw_bcnt;		/* Packet and byte counters */
    struct in_addr fw_src, fw_dst;	/* Source and destination IP addr */
    struct in_addr fw_smsk, fw_dmsk;	/* Mask for src and dest IP addr */
    u_short fw_number;			/* Rule number */
    u_int fw_flg;			/* Flags word */
#define IP_OLD_FW_MAX_PORTS	10		/* A reasonable maximum */
	union {
	u_short fw_pts[IP_OLD_FW_MAX_PORTS];	/* Array of port numbers to match */
#define IP_OLD_FW_ICMPTYPES_MAX	128
#define IP_OLD_FW_ICMPTYPES_DIM	(IP_OLD_FW_ICMPTYPES_MAX / (sizeof(unsigned) * 8))
	unsigned fw_icmptypes[IP_OLD_FW_ICMPTYPES_DIM]; /* ICMP types bitmap */
	} fw_uar;
    u_char fw_ipopt,fw_ipnopt;		/* IP options set/unset */
    u_char fw_tcpf,fw_tcpnf;		/* TCP flags set/unset */
    long timestamp;			/* timestamp (tv_sec) of last match */
    union ip_old_fw_if fw_in_if, fw_out_if;	/* Incoming and outgoing interfaces */
    union {
	u_short fu_divert_port;		/* Divert/tee port (options IPDIVERT) */
	u_short fu_pipe_nr;		/* pipe number (option DUMMYNET) */
	u_short fu_skipto_rule;		/* SKIPTO command rule number */
	u_short fu_reject_code;		/* REJECT response code */
	struct sockaddr_in fu_fwd_ip;
    } fw_un;
    u_char fw_prot;			/* IP protocol */
    u_char fw_nports;			/* N'of src ports and # of dst ports */
					/* in ports array (dst ports follow */
					/* src ports; max of 10 ports in all; */
					/* count of 0 means match all ports) */
    void *pipe_ptr;                    /* Pipe ptr in case of dummynet pipe */
    void *next_rule_ptr ;              /* next rule in case of match */
};

#define IP_OLD_FW_GETNSRCP(rule)		((rule)->fw_nports & 0x0f)
#define IP_OLD_FW_SETNSRCP(rule, n)		do {				\
					  (rule)->fw_nports &= ~0x0f;	\
					  (rule)->fw_nports |= (n);	\
					} while (0)
#define IP_OLD_FW_GETNDSTP(rule)		((rule)->fw_nports >> 4)
#define IP_OLD_FW_SETNDSTP(rule, n)		do {				\
					  (rule)->fw_nports &= ~0xf0;	\
					  (rule)->fw_nports |= (n) << 4;\
					} while (0)

#define old_fw_divert_port	fw_un.fu_divert_port
#define old_fw_skipto_rule	fw_un.fu_skipto_rule
#define old_fw_reject_code	fw_un.fu_reject_code
#define old_fw_pipe_nr	fw_un.fu_pipe_nr
#define old_fw_fwd_ip	fw_un.fu_fwd_ip

/*
 * Values for "flags" field .
 */
#define IP_OLD_FW_F_COMMAND 0x000000ff	/* Mask for type of chain entry:	*/
#define IP_OLD_FW_F_DENY	0x00000000	/* This is a deny rule			*/
#define IP_OLD_FW_F_REJECT	0x00000001	/* Deny and send a response packet	*/
#define IP_OLD_FW_F_ACCEPT	0x00000002	/* This is an accept rule		*/
#define IP_OLD_FW_F_COUNT	0x00000003	/* This is a count rule			*/
#define IP_OLD_FW_F_DIVERT	0x00000004	/* This is a divert rule		*/
#define IP_OLD_FW_F_TEE	0x00000005	/* This is a tee rule			*/
#define IP_OLD_FW_F_SKIPTO	0x00000006	/* This is a skipto rule		*/
#define IP_OLD_FW_F_FWD	0x00000007	/* This is a "change forwarding address" rule */
#define IP_OLD_FW_F_PIPE	0x00000008	/* This is a dummynet rule */

#define IP_OLD_FW_F_IN	0x00000100	/* Check inbound packets		*/
#define IP_OLD_FW_F_OUT	0x00000200	/* Check outbound packets		*/
#define IP_OLD_FW_F_IIFACE	0x00000400	/* Apply inbound interface test		*/
#define IP_OLD_FW_F_OIFACE	0x00000800	/* Apply outbound interface test	*/

#define IP_OLD_FW_F_PRN	0x00001000	/* Print if this rule matches		*/

#define IP_OLD_FW_F_SRNG	0x00002000	/* The first two src ports are a min	*
					 * and max range (stored in host byte	*
					 * order).				*/

#define IP_OLD_FW_F_DRNG	0x00004000	/* The first two dst ports are a min	*
					 * and max range (stored in host byte	*
					 * order).				*/

#define IP_OLD_FW_F_FRAG	0x00008000	/* Fragment				*/

#define IP_OLD_FW_F_IIFNAME	0x00010000	/* In interface by name/unit (not IP)	*/
#define IP_OLD_FW_F_OIFNAME	0x00020000	/* Out interface by name/unit (not IP)	*/

#define IP_OLD_FW_F_INVSRC	0x00040000	/* Invert sense of src check		*/
#define IP_OLD_FW_F_INVDST	0x00080000	/* Invert sense of dst check		*/

#define IP_OLD_FW_F_ICMPBIT 0x00100000	/* ICMP type bitmap is valid		*/

#define IP_OLD_FW_F_MASK	0x001FFFFF	/* All possible flag bits mask		*/

/*
 * For backwards compatibility with rules specifying "via iface" but
 * not restricted to only "in" or "out" packets, we define this combination
 * of bits to represent this configuration.
 */

#define IF_OLD_FW_F_VIAHACK	(IP_OLD_FW_F_IN|IP_OLD_FW_F_OUT|IP_OLD_FW_F_IIFACE|IP_OLD_FW_F_OIFACE)

/*
 * Definitions for TCP flags - abridged
 */
#define IP_OLD_FW_TCPF_ESTAB	0x40

#endif /* !__LP64__ */
#endif /* _IP_FW_COMPAT_H_ */
Commit	Line	Data
91447636 A	1	/* IPFW backward compatibility */
	2
	3	#ifndef _IP_FW_COMPAT_H_
	4	#define _IP_FW_COMPAT_H_
	5
2d21ac55	6	#if !__LP64__
91447636 A	7
	8	/* prototypes */
	9	void ipfw_convert_from_latest(struct ip_fw curr_rule, void old_rule, u_int32_t api_version);
	10	int ipfw_convert_to_latest(struct sockopt sopt, struct ip_fw rule, int api_version);
	11	int ipfw_get_command_and_version(struct sockopt sopt, int command, u_int32_t *api_version);
	12
	13
	14	/*
	15	* ******************************
	16	* **** IPFW version one ****
	17	* ******************************
	18	*/
	19
	20	/*
	21	* This union structure identifies an interface, either explicitly
	22	* by name or implicitly by IP address. The flags IP_FW_F_IIFNAME
	23	* and IP_FW_F_OIFNAME say how to interpret this structure. An
	24	* interface unit number of -1 matches any unit number, while an
	25	* IP address of 0.0.0.0 indicates matches any interface.
	26	*
	27	* The receive and transmit interfaces are only compared against the
	28	* the packet if the corresponding bit (IP_FW_F_IIFACE or IP_FW_F_OIFACE)
	29	* is set. Note some packets lack a receive or transmit interface
	30	* (in which case the missing "interface" never matches).
	31	*/
	32
	33	union ip_fw_if_compat {
	34	struct in_addr fu_via_ip; /* Specified by IP address */
	35	struct { /* Specified by interface name */
	36	#define FW_IFNLEN_COMPAT 10 /* need room ! was IFNAMSIZ */
	37	char name[FW_IFNLEN_COMPAT];
	38	short unit; /* -1 means match any unit */
	39	} fu_via_if_compat;
	40	};
	41
	42	/*
	43	* Format of an IP firewall descriptor
	44	*
	45	* fw_src, fw_dst, fw_smsk, fw_dmsk are always stored in network byte order.
	46	* fw_flg and fw_n*p are stored in host byte order (of course).
	47	* Port numbers are stored in HOST byte order.
	48	*/
	49
	50	struct ip_fw_compat {
	51	u_int32_t version; /* Version of this structure. Should always be */
	52	/* set to IP_FW_CURRENT_API_VERSION by clients. */
	53	void context; / Context that is usable by user processes to */
	54	/* identify this rule. */
	55	u_int64_t fw_pcnt,fw_bcnt; /* Packet and byte counters */
	56	struct in_addr fw_src, fw_dst; /* Source and destination IP addr */
	57	struct in_addr fw_smsk, fw_dmsk; /* Mask for src and dest IP addr */
	58	u_short fw_number; /* Rule number */
	59	u_int fw_flg; /* Flags word */
	60	#define IP_FW_MAX_PORTS_COMPAT 10 /* A reasonable maximum */
	61	union {
	62	u_short fw_pts[IP_FW_MAX_PORTS_COMPAT]; /* Array of port numbers to match */
	63	#define IP_FW_ICMPTYPES_MAX_COMPAT 128
	64	#define IP_FW_ICMPTYPES_DIM_COMPAT (IP_FW_ICMPTYPES_MAX_COMPAT / (sizeof(unsigned) * 8))
	65	unsigned fw_icmptypes[IP_FW_ICMPTYPES_DIM_COMPAT]; /* ICMP types bitmap */
	66	} fw_uar_compat;
	67	u_int fw_ipflg; /* IP flags word */
	68	u_char fw_ipopt,fw_ipnopt; /* IP options set/unset */
	69	u_char fw_tcpopt,fw_tcpnopt; /* TCP options set/unset */
	70	u_char fw_tcpf,fw_tcpnf; /* TCP flags set/unset */
71	long timestamp; /* timestamp (tv_sec) of last match */
72	union ip_fw_if_compat fw_in_if, fw_out_if; /* Incoming and outgoing interfaces */
73	union {
74	u_short fu_divert_port; /* Divert/tee port (options IPDIVERT) */
75	u_short fu_pipe_nr; /* queue number (option DUMMYNET) */
76	u_short fu_skipto_rule; /* SKIPTO command rule number */
77	u_short fu_reject_code; /* REJECT response code */
78	struct sockaddr_in fu_fwd_ip;
79	} fw_un_compat;
80	u_char fw_prot; /* IP protocol */
81	/*
82	* N'of src ports and # of dst ports in ports array (dst ports
83	* follow src ports; max of 10 ports in all; count of 0 means
84	* match all ports)
85	*/
86	u_char fw_nports;
87	void pipe_ptr; / flow_set ptr for dummynet pipe */
88	void next_rule_ptr ; / next rule in case of match */
89	uid_t fw_uid; /* uid to match */
90	int fw_logamount; /* amount to log */
91	u_int64_t fw_loghighest; /* highest number packet to log */
92	};
93
94	/*
95	* extended ipfw structure... some fields in the original struct
96	* can be used to pass parameters up/down, namely pointers
97	* void *pipe_ptr
98	* void *next_rule_ptr
99	* some others can be used to pass parameters down, namely counters etc.
100	* u_int64_t fw_pcnt,fw_bcnt;
101	* long timestamp;
102	*/
103
104	struct ip_fw_ext_compat { /* extended structure */
105	struct ip_fw rule; /* must be at offset 0 */
106	long dont_match_prob; /* 0x7fffffff means 1.0, always fail */
107	u_int dyn_type; /* type for dynamic rule */
108	};
109
110	struct ip_fw_chain_compat {
111	LIST_ENTRY(ip_fw_chain_compat) next;
112	struct ip_fw_compat *rule;
113	};
114
115	/*
116	* dynamic ipfw rule
117	*/
118	struct ipfw_dyn_rule_compat {
119	struct ipfw_dyn_rule *next ;
120
121	struct ipfw_flow_id id ;
122	struct ipfw_flow_id mask ;
123	struct ip_fw_chain_compat chain ; / pointer to parent rule */
124	u_int32_t type ; /* rule type */
125	u_int32_t expire ; /* expire time */
126	u_int64_t pcnt, bcnt; /* match counters */
127	u_int32_t bucket ; /* which bucket in hash table */
128	u_int32_t state ; /* state of this rule (typ. a */
129	/* combination of TCP flags) */
130	} ;
131
132	#define IP_FW_GETNSRCP_COMPAT(rule) ((rule)->fw_nports & 0x0f)
133	#define IP_FW_SETNSRCP_COMPAT(rule, n) do { \
134	(rule)->fw_nports &= ~0x0f; \
135	(rule)->fw_nports \|= (n); \
136	} while (0)
137	#define IP_FW_GETNDSTP_COMPAT(rule) ((rule)->fw_nports >> 4)
138	#define IP_FW_SETNDSTP_COMPAT(rule, n) do { \
139	(rule)->fw_nports &= ~0xf0; \
140	(rule)->fw_nports \|= (n) << 4;\
141	} while (0)
142
143	#define fw_divert_port_compat fw_un_compat.fu_divert_port
144	#define fw_skipto_rule_compat fw_un_compat.fu_skipto_rule
145	#define fw_reject_code_compat fw_un_compat.fu_reject_code
146	#define fw_pipe_nr_compat fw_un_compat.fu_pipe_nr
147	#define fw_fwd_ip_compat fw_un_compat.fu_fwd_ip
148
149	/*
150	* Values for "flags" field .
151	*/
152	#define IP_FW_F_COMMAND_COMPAT 0x000000ff /* Mask for type of chain entry: */
153	#define IP_FW_F_DENY_COMPAT 0x00000000 /* This is a deny rule */
154	#define IP_FW_F_REJECT_COMPAT 0x00000001 /* Deny and send a response packet */
155	#define IP_FW_F_ACCEPT_COMPAT 0x00000002 /* This is an accept rule */
156	#define IP_FW_F_COUNT_COMPAT 0x00000003 /* This is a count rule */
157	#define IP_FW_F_DIVERT_COMPAT 0x00000004 /* This is a divert rule */
158	#define IP_FW_F_TEE_COMPAT 0x00000005 /* This is a tee rule */
159	#define IP_FW_F_SKIPTO_COMPAT 0x00000006 /* This is a skipto rule */
160	#define IP_FW_F_FWD_COMPAT 0x00000007 /* This is a "change forwarding address" rule */
161	#define IP_FW_F_PIPE_COMPAT 0x00000008 /* This is a dummynet rule */
162	#define IP_FW_F_QUEUE_COMPAT 0x00000009 /* This is a dummynet queue */
163
164	#define IP_FW_F_IN_COMPAT 0x00000100 /* Check inbound packets */
165	#define IP_FW_F_OUT_COMPAT 0x00000200 /* Check outbound packets */
166	#define IP_FW_F_IIFACE_COMPAT 0x00000400 /* Apply inbound interface test */
167	#define IP_FW_F_OIFACE_COMPAT 0x00000800 /* Apply outbound interface test */
168
169	#define IP_FW_F_PRN_COMPAT 0x00001000 /* Print if this rule matches */
170
171	#define IP_FW_F_SRNG_COMPAT 0x00002000 /* The first two src ports are a min *
172	* and max range (stored in host byte *
173	* order). */
174
175	#define IP_FW_F_DRNG_COMPAT 0x00004000 /* The first two dst ports are a min *
176	* and max range (stored in host byte *
177	* order). */
178
179	#define IP_FW_F_FRAG_COMPAT 0x00008000 /* Fragment */
180
181	#define IP_FW_F_IIFNAME_COMPAT 0x00010000 /* In interface by name/unit (not IP) */
182	#define IP_FW_F_OIFNAME_COMPAT 0x00020000 /* Out interface by name/unit (not IP) */
183
184	#define IP_FW_F_INVSRC_COMPAT 0x00040000 /* Invert sense of src check */
185	#define IP_FW_F_INVDST_COMPAT 0x00080000 /* Invert sense of dst check */
186
187	#define IP_FW_F_ICMPBIT_COMPAT 0x00100000 /* ICMP type bitmap is valid */
188
189	#define IP_FW_F_UID_COMPAT 0x00200000 /* filter by uid */
190
191	#define IP_FW_F_RND_MATCH_COMPAT 0x00800000 /* probabilistic rule match */
192	#define IP_FW_F_SMSK_COMPAT 0x01000000 /* src-port + mask */
193	#define IP_FW_F_DMSK_COMPAT 0x02000000 /* dst-port + mask */
194	#define IP_FW_BRIDGED_COMPAT 0x04000000 /* only match bridged packets */
195	#define IP_FW_F_KEEP_S_COMPAT 0x08000000 /* keep state */
196	#define IP_FW_F_CHECK_S_COMPAT 0x10000000 /* check state */
197
198	#define IP_FW_F_SME_COMPAT 0x20000000 /* source = me */
199	#define IP_FW_F_DME_COMPAT 0x40000000 /* destination = me */
200
201	#define IP_FW_F_MASK_COMPAT 0x7FFFFFFF /* All possible flag bits mask */
202
203	/*
204	* Flags for the 'fw_ipflg' field, for comparing values of ip and its protocols.
205	*/
206	#define IP_FW_IF_TCPEST_COMPAT 0x00000020 /* established TCP connection */
207	#define IP_FW_IF_TCPMSK_COMPAT 0x00000020 /* mask of all TCP values */
208
209	/*
210	* Definitions for TCP flags.
211	*/
212	#define IP_FW_TCPF_FIN_COMPAT TH_FIN
213	#define IP_FW_TCPF_SYN_COMPAT TH_SYN
214	#define IP_FW_TCPF_RST_COMPAT TH_RST
215	#define IP_FW_TCPF_PSH_COMPAT TH_PUSH
216	#define IP_FW_TCPF_ACK_COMPAT TH_ACK
217	#define IP_FW_TCPF_URG_COMPAT TH_URG
218
219	/*
220	* For backwards compatibility with rules specifying "via iface" but
221	* not restricted to only "in" or "out" packets, we define this combination
222	* of bits to represent this configuration.
223	*/
224
225	#define IF_FW_F_VIAHACK_COMPAT (IP_FW_F_IN_COMPAT\|IP_FW_F_OUT_COMPAT\|IP_FW_F_IIFACE_COMPAT\|IP_FW_F_OIFACE_COMPAT)
226
227	/*
228	* Definitions for REJECT response codes.
229	* Values less than 256 correspond to ICMP unreachable codes.
230	*/
231	#define IP_FW_REJECT_RST_COMPAT 0x0100 /* TCP packets: send RST */
232
233
234	/*
235	* ******************************
236	* **** IPFW version zero ***
237	* ******************************
238	*/
239
240	/*
241	* This union structure identifies an interface, either explicitly
242	* by name or implicitly by IP address. The flags IP_FW_F_IIFNAME
243	* and IP_FW_F_OIFNAME say how to interpret this structure. An
244	* interface unit number of -1 matches any unit number, while an
245	* IP address of 0.0.0.0 indicates matches any interface.
246	*
247	* The receive and transmit interfaces are only compared against the
248	* the packet if the corresponding bit (IP_FW_F_IIFACE or IP_FW_F_OIFACE)
249	* is set. Note some packets lack a receive or transmit interface
250	* (in which case the missing "interface" never matches).
251	*/
252
253	union ip_old_fw_if {
254	struct in_addr fu_via_ip; /* Specified by IP address */
255	struct { /* Specified by interface name */
256	#define OLD_FW_IFNLEN 10 /* need room ! was IFNAMSIZ */
257	char name[OLD_FW_IFNLEN];
258	short unit; /* -1 means match any unit */
259	} fu_via_if;
260	};
261
262	/*
263	* Format of an IP firewall descriptor
264	*
265	* fw_src, fw_dst, fw_smsk, fw_dmsk are always stored in network byte order.
266	* fw_flg and fw_n*p are stored in host byte order (of course).
267	* Port numbers are stored in HOST byte order.
268	* Warning: setsockopt() will fail if sizeof(struct ip_fw) > MLEN (108)
269	*/
270
271	struct ip_old_fw {
272	u_int64_t fw_pcnt,fw_bcnt; /* Packet and byte counters */
273	struct in_addr fw_src, fw_dst; /* Source and destination IP addr */
274	struct in_addr fw_smsk, fw_dmsk; /* Mask for src and dest IP addr */
275	u_short fw_number; /* Rule number */
276	u_int fw_flg; /* Flags word */
277	#define IP_OLD_FW_MAX_PORTS 10 /* A reasonable maximum */
278	union {
279	u_short fw_pts[IP_OLD_FW_MAX_PORTS]; /* Array of port numbers to match */
280	#define IP_OLD_FW_ICMPTYPES_MAX 128
281	#define IP_OLD_FW_ICMPTYPES_DIM (IP_OLD_FW_ICMPTYPES_MAX / (sizeof(unsigned) * 8))
282	unsigned fw_icmptypes[IP_OLD_FW_ICMPTYPES_DIM]; /* ICMP types bitmap */
283	} fw_uar;
284	u_char fw_ipopt,fw_ipnopt; /* IP options set/unset */
285	u_char fw_tcpf,fw_tcpnf; /* TCP flags set/unset */
286	long timestamp; /* timestamp (tv_sec) of last match */
287	union ip_old_fw_if fw_in_if, fw_out_if; /* Incoming and outgoing interfaces */
288	union {
289	u_short fu_divert_port; /* Divert/tee port (options IPDIVERT) */
290	u_short fu_pipe_nr; /* pipe number (option DUMMYNET) */
291	u_short fu_skipto_rule; /* SKIPTO command rule number */
292	u_short fu_reject_code; /* REJECT response code */
293	struct sockaddr_in fu_fwd_ip;
294	} fw_un;
295	u_char fw_prot; /* IP protocol */
296	u_char fw_nports; /* N'of src ports and # of dst ports */
297	/* in ports array (dst ports follow */
298	/* src ports; max of 10 ports in all; */
299	/* count of 0 means match all ports) */
300	void pipe_ptr; / Pipe ptr in case of dummynet pipe */
301	void next_rule_ptr ; / next rule in case of match */
302	};
303
304	#define IP_OLD_FW_GETNSRCP(rule) ((rule)->fw_nports & 0x0f)
305	#define IP_OLD_FW_SETNSRCP(rule, n) do { \
306	(rule)->fw_nports &= ~0x0f; \
307	(rule)->fw_nports \|= (n); \
308	} while (0)
309	#define IP_OLD_FW_GETNDSTP(rule) ((rule)->fw_nports >> 4)
310	#define IP_OLD_FW_SETNDSTP(rule, n) do { \
311	(rule)->fw_nports &= ~0xf0; \
312	(rule)->fw_nports \|= (n) << 4;\
313	} while (0)
314
315	#define old_fw_divert_port fw_un.fu_divert_port
316	#define old_fw_skipto_rule fw_un.fu_skipto_rule
317	#define old_fw_reject_code fw_un.fu_reject_code
318	#define old_fw_pipe_nr fw_un.fu_pipe_nr
319	#define old_fw_fwd_ip fw_un.fu_fwd_ip
320
321	/*
322	* Values for "flags" field .
323	*/
324	#define IP_OLD_FW_F_COMMAND 0x000000ff /* Mask for type of chain entry: */
325	#define IP_OLD_FW_F_DENY 0x00000000 /* This is a deny rule */
326	#define IP_OLD_FW_F_REJECT 0x00000001 /* Deny and send a response packet */
327	#define IP_OLD_FW_F_ACCEPT 0x00000002 /* This is an accept rule */
328	#define IP_OLD_FW_F_COUNT 0x00000003 /* This is a count rule */
329	#define IP_OLD_FW_F_DIVERT 0x00000004 /* This is a divert rule */
330	#define IP_OLD_FW_F_TEE 0x00000005 /* This is a tee rule */
331	#define IP_OLD_FW_F_SKIPTO 0x00000006 /* This is a skipto rule */
332	#define IP_OLD_FW_F_FWD 0x00000007 /* This is a "change forwarding address" rule */
333	#define IP_OLD_FW_F_PIPE 0x00000008 /* This is a dummynet rule */
334
335	#define IP_OLD_FW_F_IN 0x00000100 /* Check inbound packets */
336	#define IP_OLD_FW_F_OUT 0x00000200 /* Check outbound packets */
337	#define IP_OLD_FW_F_IIFACE 0x00000400 /* Apply inbound interface test */
338	#define IP_OLD_FW_F_OIFACE 0x00000800 /* Apply outbound interface test */
339
340	#define IP_OLD_FW_F_PRN 0x00001000 /* Print if this rule matches */
341
342	#define IP_OLD_FW_F_SRNG 0x00002000 /* The first two src ports are a min *
343	* and max range (stored in host byte *
344	* order). */
345
346	#define IP_OLD_FW_F_DRNG 0x00004000 /* The first two dst ports are a min *
347	* and max range (stored in host byte *
348	* order). */
349
350	#define IP_OLD_FW_F_FRAG 0x00008000 /* Fragment */
351
352	#define IP_OLD_FW_F_IIFNAME 0x00010000 /* In interface by name/unit (not IP) */
353	#define IP_OLD_FW_F_OIFNAME 0x00020000 /* Out interface by name/unit (not IP) */
354
355	#define IP_OLD_FW_F_INVSRC 0x00040000 /* Invert sense of src check */
356	#define IP_OLD_FW_F_INVDST 0x00080000 /* Invert sense of dst check */
357
358	#define IP_OLD_FW_F_ICMPBIT 0x00100000 /* ICMP type bitmap is valid */
359
360	#define IP_OLD_FW_F_MASK 0x001FFFFF /* All possible flag bits mask */
361
362	/*
363	* For backwards compatibility with rules specifying "via iface" but
364	* not restricted to only "in" or "out" packets, we define this combination
365	* of bits to represent this configuration.
366	*/
367
368	#define IF_OLD_FW_F_VIAHACK (IP_OLD_FW_F_IN\|IP_OLD_FW_F_OUT\|IP_OLD_FW_F_IIFACE\|IP_OLD_FW_F_OIFACE)
369
370	/*
371	* Definitions for TCP flags - abridged
372	*/
373	#define IP_OLD_FW_TCPF_ESTAB 0x40
374
2d21ac55 A	375	#endif /* !__LP64__ */
2d21ac55 A	376	#endif /* _IP_FW_COMPAT_H_ */