initial cut at split out dhcrelay, whacked from usr.sbin/dhcp/ and sbin/dhclient

1 files changed, 290 insertions, 0 deletions

diff --git a/usr.sbin/dhcrelay/dhcpd.h b/usr.sbin/dhcrelay/dhcpd.h
new file mode 100644
index 00000000000..6b305814d71
--- /dev/null
+++ b/usr.sbin/dhcrelay/dhcpd.h
@@ -0,0 +1,290 @@
+/*	$OpenBSD: dhcpd.h,v 1.1 2004/04/12 21:10:28 henning Exp $	*/
+
+/*
+ * 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''.
+ */
+
+#include <sys/types.h>
+
+#include <sys/socket.h>
+#include <sys/sockio.h>
+#include <sys/stat.h>
+#include <sys/time.h>
+#include <sys/un.h>
+#include <sys/wait.h>
+
+#include <net/if.h>
+#include <net/if_dl.h>
+#include <net/route.h>
+
+#include <netinet/in.h>
+#include <arpa/inet.h>
+
+#include <ctype.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <limits.h>
+#include <netdb.h>
+#include <paths.h>
+#include <unistd.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <syslog.h>
+#include <time.h>
+#include <unistd.h>
+
+#include "dhcp.h"
+#include "tree.h"
+
+#define	LOCAL_PORT	68
+#define	REMOTE_PORT	67
+
+struct option_data {
+	int		 len;
+	u_int8_t	*data;
+};
+
+struct string_list {
+	struct string_list	*next;
+	char			*string;
+};
+
+struct iaddr {
+	int len;
+	unsigned char iabuf[16];
+};
+
+struct iaddrlist {
+	struct iaddrlist *next;
+	struct iaddr addr;
+};
+
+struct packet {
+	struct dhcp_packet	*raw;
+	int			 packet_length;
+	int			 packet_type;
+	int			 options_valid;
+	int			 client_port;
+	struct iaddr		 client_addr;
+	struct interface_info	*interface;
+	struct hardware		*haddr;
+	struct option_data	 options[256];
+	int			 got_requested_address;
+};
+
+struct hardware {
+	u_int8_t htype;
+	u_int8_t hlen;
+	u_int8_t haddr[16];
+};
+
+struct client_lease {
+	struct client_lease	*next;
+	time_t			 expiry, renewal, rebind;
+	struct iaddr		 address;
+	char			*server_name;
+	char			*filename;
+	struct string_list	*medium;
+	unsigned int		 is_static : 1;
+	unsigned int		 is_bootp : 1;
+	struct option_data	 options[256];
+};
+
+/* Possible states in which the client can be. */
+enum dhcp_state {
+	S_REBOOTING,
+	S_INIT,
+	S_SELECTING,
+	S_REQUESTING,
+	S_BOUND,
+	S_RENEWING,
+	S_REBINDING
+};
+
+struct client_config {
+	struct option_data	defaults[256];
+	enum {
+		ACTION_DEFAULT,
+		ACTION_SUPERSEDE,
+		ACTION_PREPEND,
+		ACTION_APPEND
+	} default_actions[256];
+
+	struct option_data	 send_options[256];
+	u_int8_t		 required_options[256];
+	u_int8_t		 requested_options[256];
+	int			 requested_option_count;
+	time_t			 timeout;
+	time_t			 initial_interval;
+	time_t			 retry_interval;
+	time_t			 select_interval;
+	time_t			 reboot_timeout;
+	time_t			 backoff_cutoff;
+	struct string_list	*media;
+	char			*script_name;
+	enum { IGNORE, ACCEPT, PREFER }
+				 bootp_policy;
+	struct string_list	*medium;
+	struct iaddrlist	*reject_list;
+};
+
+struct client_state {
+	struct client_lease	 *active;
+	struct client_lease	 *new;
+	struct client_lease	 *offered_leases;
+	struct client_lease	 *leases;
+	struct client_lease	 *alias;
+	enum dhcp_state		  state;
+	struct iaddr		  destination;
+	u_int32_t		  xid;
+	u_int16_t		  secs;
+	time_t			  first_sending;
+	time_t			  interval;
+	struct string_list	 *medium;
+	struct dhcp_packet	  packet;
+	int			  packet_length;
+	struct iaddr		  requested_address;
+	struct client_config	 *config;
+	char			**scriptEnv;
+	int			  scriptEnvsize;
+	struct string_list	 *env;
+	int			  envc;
+};
+
+struct interface_info {
+	struct interface_info	*next;
+	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		*ifp;
+	struct client_state	*client;
+	int			 noifmedia;
+	int			 errors;
+	int			 dead;
+	u_int16_t		 index;
+};
+
+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;
+};
+
+#define DEFAULT_HASH_SIZE 97
+
+struct hash_bucket {
+	struct hash_bucket *next;
+	unsigned char *name;
+	int len;
+	unsigned char *value;
+};
+
+struct hash_table {
+	int hash_count;
+	struct hash_bucket *buckets[DEFAULT_HASH_SIZE];
+};
+
+/* Default path to dhcpd config file. */
+#define	DHCPD_LOG_FACILITY	LOG_DAEMON
+
+#define	MAX_TIME 0x7fffffff
+#define	MIN_TIME 0
+
+/* External definitions... */
+
+/* errwarn.c */
+extern int warnings_occurred;
+void error(char *, ...) __attribute__ ((__format__ (__printf__, 1, 2)));
+int warn(char *, ...) __attribute__ ((__format__ (__printf__, 1, 2)));
+int note(char *, ...) __attribute__ ((__format__ (__printf__, 1, 2)));
+int debug(char *, ...) __attribute__ ((__format__ (__printf__, 1, 2)));
+
+/* 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 *,
+    struct packet *, struct dhcp_packet *, size_t, struct in_addr,
+    struct sockaddr_in *, struct hardware *);
+ssize_t receive_packet(struct interface_info *, unsigned char *, size_t,
+    struct sockaddr_in *, struct hardware *);
+
+/* dispatch.c */
+extern void (*bootp_packet_handler)(struct interface_info *,
+    struct dhcp_packet *, int, unsigned int, struct iaddr, struct hardware *);
+void discover_interfaces(struct interface_info *);
+void reinitialize_interfaces(void);
+void dispatch(void);
+void got_one(struct protocol *);
+void add_timeout(time_t, void (*)(void *), void *);
+void cancel_timeout(void (*)(void *), void *);
+void add_protocol(char *, int, void (*)(struct protocol *), void *);
+void remove_protocol(struct protocol *);
+int interface_link_status(char *);
+
+/* packet.c */
+void assemble_hw_header(struct interface_info *, unsigned char *,
+    int *, struct hardware *);
+void assemble_udp_ip_header(struct interface_info *, unsigned char *,
+    int *, u_int32_t, u_int32_t, unsigned int, unsigned char *, int);
+ssize_t decode_hw_header(struct interface_info *, unsigned char *,
+    int, struct hardware *);
+ssize_t decode_udp_ip_header(struct interface_info *, unsigned char *,
+    int, struct sockaddr_in *, unsigned char *, int);
+
+
+/* crap */
+extern time_t cur_time;
+extern int log_priority;
+extern int log_perror;