Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	usr.sbin/dhcrelay6/dhcpd.h	Lines:	0	1	0.0 %
Date:	2017-11-13	Branches:	0	0	0.0 %


/*	$OpenBSD: dhcpd.h,v 1.1 2017/03/17 14:45:16 rzalamena Exp $	*/

/*
 * Copyright (c) 2017 Rafael Zalamena <rzalamena@openbsd.org>
 * Copyright (c) 2004 Henning Brauer <henning@openbsd.org>
 * Copyright (c) 1995, 1996, 1997, 1998, 1999
 * The Internet Software Consortium.    All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of The Internet Software Consortium nor the names
 *    of its contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE INTERNET SOFTWARE CONSORTIUM AND
 * CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED.  IN NO EVENT SHALL THE INTERNET SOFTWARE CONSORTIUM OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * This software has been written for the Internet Software Consortium
 * by Ted Lemon <mellon@fugue.com> in cooperation with Vixie
 * Enterprises.  To learn more about the Internet Software Consortium,
 * see ``http://www.vix.com/isc''.  To learn more about Vixie
 * Enterprises, see ``http://www.vix.com''.
 */

#ifndef _DHCPD_H_
#define _DHCPD_H_

#include <sys/queue.h>

#define DHCRELAY6_USER	"_dhcp"

/* Maximum size of client hardware address. */
#define CHADDR_SIZE	16

/* Packet context for assembly/disassembly. */
struct packet_ctx {
	/* Client or server socket descriptor. */
	int				 pc_sd;

	/* Layer 2 address information. */
	uint8_t				 pc_htype;
	uint8_t				 pc_hlen;
	uint8_t				 pc_smac[CHADDR_SIZE];
	uint8_t				 pc_dmac[CHADDR_SIZE];

	/* Layer 3 address information. */
	uint16_t			 pc_ethertype;
	struct sockaddr_storage		 pc_srcorig;
	struct sockaddr_storage		 pc_src;
	struct sockaddr_storage		 pc_dst;

	/* Relay Agent Information data. */
	uint8_t				*pc_raidata;
	size_t				 pc_raidatalen;
	uint32_t			 pc_enterpriseno;
	uint8_t				*pc_remote;
	size_t				 pc_remotelen;
};

struct hardware {
	u_int8_t htype;
	u_int8_t hlen;
	u_int8_t haddr[CHADDR_SIZE];
};

/* DHCP relaying modes. */
enum dhcp_relay_mode {
	DRM_UNKNOWN,
	DRM_LAYER2,
	DRM_LAYER3,
};

struct interface_info {
	struct hardware		 hw_address;
	struct in_addr		 primary_address;
	char			 name[IFNAMSIZ];
	int			 rfdesc;
	int			 wfdesc;
	unsigned char		*rbuf;
	size_t			 rbuf_max;
	size_t			 rbuf_offset;
	size_t			 rbuf_len;
	struct ifreq		 ifr;
	int			 noifmedia;
	int			 errors;
	int			 dead;
	uint16_t		 index;

	int			 ipv6; /* Has any IPv6 address. */
	int			 gipv6; /* Has global IPv6 address. */
	struct in6_addr		 linklocal; /* IPv6 link-local address. */

	TAILQ_ENTRY(interface_info) entry;
};
TAILQ_HEAD(intfq, interface_info);

struct timeout {
	struct timeout	*next;
	time_t		 when;
	void		 (*func)(void *);
	void		*what;
};

struct protocol {
	struct protocol	*next;
	int fd;
	void (*handler)(struct protocol *);
	void *local;
};

struct server_list {
	struct interface_info *intf;
	struct sockaddr_storage to;
	int fd;
	int siteglobaladdr;
	TAILQ_ENTRY(server_list) entry;
};
TAILQ_HEAD(serverq, server_list);

/* bpf.c */
int if_register_bpf(struct interface_info *);
void if_register_send(struct interface_info *);
void if_register_receive(struct interface_info *);
ssize_t send_packet(struct interface_info *,
    void *, size_t, struct packet_ctx *);
ssize_t receive_packet(struct interface_info *, unsigned char *, size_t,
    struct packet_ctx *);

/* dispatch.c */
extern void (*bootp_packet_handler)(struct interface_info *,
    void *, size_t, struct packet_ctx *);
void setup_iflist(void);
struct interface_info *iflist_getbyname(const char *);
struct interface_info *iflist_getbyindex(unsigned int);
struct interface_info *iflist_getbyaddr6(struct in6_addr *);
int if_hasaddress(struct interface_info *);
struct interface_info *register_interface(const char *,
    void (*)(struct protocol *));
void dispatch(void);
void got_one(struct protocol *);
void add_protocol(char *, int, void (*)(struct protocol *), void *);
void remove_protocol(struct protocol *);

/* packet.c */
void assemble_hw_header(unsigned char *, int *, struct packet_ctx *);
void assemble_udp_ip6_header(unsigned char *, int *, struct packet_ctx *,
    unsigned char *, int);
ssize_t decode_hw_header(unsigned char *, int, struct packet_ctx *);
ssize_t decode_udp_ip6_header(unsigned char *, int, struct packet_ctx *,
    size_t);

/* dhcrelay6.c */
const char *v6addr2str(struct in6_addr *);

extern struct intfq intflist;
extern struct serverq svlist;
extern time_t cur_time;

static inline struct sockaddr_in6 *
ss2sin6(struct sockaddr_storage *ss)
{
	return ((struct sockaddr_in6 *)ss);
}

#endif /* _DHCPD_H_ */


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: dhcpd.h,v 1.1 2017/03/17 14:45:16 rzalamena Exp $ */
2
3			/*
4			* Copyright (c) 2017 Rafael Zalamena <rzalamena@openbsd.org>
5			* Copyright (c) 2004 Henning Brauer <henning@openbsd.org>
6			* Copyright (c) 1995, 1996, 1997, 1998, 1999
7			* The Internet Software Consortium. All rights reserved.
8			*
9			* Redistribution and use in source and binary forms, with or without
10			* modification, are permitted provided that the following conditions
11			* are met:
12			*
13			* 1. Redistributions of source code must retain the above copyright
14			* notice, this list of conditions and the following disclaimer.
15			* 2. Redistributions in binary form must reproduce the above copyright
16			* notice, this list of conditions and the following disclaimer in the
17			* documentation and/or other materials provided with the distribution.
18			* 3. Neither the name of The Internet Software Consortium nor the names
19			* of its contributors may be used to endorse or promote products derived
20			* from this software without specific prior written permission.
21			*
22			* THIS SOFTWARE IS PROVIDED BY THE INTERNET SOFTWARE CONSORTIUM AND
23			* CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
24			* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
25			* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
26			* DISCLAIMED. IN NO EVENT SHALL THE INTERNET SOFTWARE CONSORTIUM OR
27			* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
28			* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
29			* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
30			* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
31			* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
32			* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
33			* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34			* SUCH DAMAGE.
35			*
36			* This software has been written for the Internet Software Consortium
37			* by Ted Lemon <mellon@fugue.com> in cooperation with Vixie
38			* Enterprises. To learn more about the Internet Software Consortium,
39			* see ``http://www.vix.com/isc''. To learn more about Vixie
40			* Enterprises, see ``http://www.vix.com''.
41			*/
42
43			#ifndef _DHCPD_H_
44			#define _DHCPD_H_
45
46			#include <sys/queue.h>
47
48			#define DHCRELAY6_USER "_dhcp"
49
50			/* Maximum size of client hardware address. */
51			#define CHADDR_SIZE 16
52
53			/* Packet context for assembly/disassembly. */
54			struct packet_ctx {
55			/* Client or server socket descriptor. */
56			int pc_sd;
57
58			/* Layer 2 address information. */
59			uint8_t pc_htype;
60			uint8_t pc_hlen;
61			uint8_t pc_smac[CHADDR_SIZE];
62			uint8_t pc_dmac[CHADDR_SIZE];
63
64			/* Layer 3 address information. */
65			uint16_t pc_ethertype;
66			struct sockaddr_storage pc_srcorig;
67			struct sockaddr_storage pc_src;
68			struct sockaddr_storage pc_dst;
69
70			/* Relay Agent Information data. */
71			uint8_t *pc_raidata;
72			size_t pc_raidatalen;
73			uint32_t pc_enterpriseno;
74			uint8_t *pc_remote;
75			size_t pc_remotelen;
76			};
77
78			struct hardware {
79			u_int8_t htype;
80			u_int8_t hlen;
81			u_int8_t haddr[CHADDR_SIZE];
82			};
83
84			/* DHCP relaying modes. */
85			enum dhcp_relay_mode {
86			DRM_UNKNOWN,
87			DRM_LAYER2,
88			DRM_LAYER3,
89			};
90
91			struct interface_info {
92			struct hardware hw_address;
93			struct in_addr primary_address;
94			char name[IFNAMSIZ];
95			int rfdesc;
96			int wfdesc;
97			unsigned char *rbuf;
98			size_t rbuf_max;
99			size_t rbuf_offset;
100			size_t rbuf_len;
101			struct ifreq ifr;
102			int noifmedia;
103			int errors;
104			int dead;
105			uint16_t index;
106
107			int ipv6; /* Has any IPv6 address. */
108			int gipv6; /* Has global IPv6 address. */
109			struct in6_addr linklocal; /* IPv6 link-local address. */
110
111			TAILQ_ENTRY(interface_info) entry;
112			};
113			TAILQ_HEAD(intfq, interface_info);
114
115			struct timeout {
116			struct timeout *next;
117			time_t when;
118			void (func)(void );
119			void *what;
120			};
121
122			struct protocol {
123			struct protocol *next;
124			int fd;
125			void (handler)(struct protocol );
126			void *local;
127			};
128
129			struct server_list {
130			struct interface_info *intf;
131			struct sockaddr_storage to;
132			int fd;
133			int siteglobaladdr;
134			TAILQ_ENTRY(server_list) entry;
135			};
136			TAILQ_HEAD(serverq, server_list);
137
138			/* bpf.c */
139			int if_register_bpf(struct interface_info *);
140			void if_register_send(struct interface_info *);
141			void if_register_receive(struct interface_info *);
142			ssize_t send_packet(struct interface_info *,
143			void , size_t, struct packet_ctx );
144			ssize_t receive_packet(struct interface_info , unsigned char , size_t,
145			struct packet_ctx *);
146
147			/* dispatch.c */
148			extern void (bootp_packet_handler)(struct interface_info ,
149			void , size_t, struct packet_ctx );
150			void setup_iflist(void);
151			struct interface_info iflist_getbyname(const char );
152			struct interface_info *iflist_getbyindex(unsigned int);
153			struct interface_info iflist_getbyaddr6(struct in6_addr );
154			int if_hasaddress(struct interface_info *);
155			struct interface_info register_interface(const char ,
156			void ()(struct protocol ));
157			void dispatch(void);
158			void got_one(struct protocol *);
159			void add_protocol(char , int, void ()(struct protocol ), void );
160			void remove_protocol(struct protocol *);
161
162			/* packet.c */
163			void assemble_hw_header(unsigned char , int , struct packet_ctx *);
164			void assemble_udp_ip6_header(unsigned char , int , struct packet_ctx *,
165			unsigned char *, int);
166			ssize_t decode_hw_header(unsigned char , int, struct packet_ctx );
167			ssize_t decode_udp_ip6_header(unsigned char , int, struct packet_ctx ,
168			size_t);
169
170			/* dhcrelay6.c */
171			const char v6addr2str(struct in6_addr );
172
173			extern struct intfq intflist;
174			extern struct serverq svlist;
175			extern time_t cur_time;
176
177			static inline struct sockaddr_in6 *
178			ss2sin6(struct sockaddr_storage *ss)
179			{
180			return ((struct sockaddr_in6 *)ss);
181			}
182
183			#endif /* _DHCPD_H_ */