1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright (c) 1993, 2010, Oracle and/or its affiliates. All rights reserved. 23 */ 24 25 #ifndef _DHCPD_H 26 #define _DHCPD_H 27 28 #ifdef __cplusplus 29 extern "C" { 30 #endif 31 32 /* 33 * dhcpd.h -- common header file for all the modules of the in.dhcpd program. 34 */ 35 36 #include <dhcp_svc_confopt.h> 37 #include <dhcp_svc_private.h> 38 #include <dhcp_svc_public.h> 39 #include <dhcp_impl.h> 40 #include <dhcp_symbol.h> 41 #include <libinetutil.h> 42 #include "hash.h" 43 #include "per_dnet.h" 44 45 /* 46 * Raw encoded packet data. The final state. Note that 'code' not only 47 * describes options: predefined: 1-60, site: 128-254, vendor: 42(*), 48 * but it also defines packet fields for packet data as well. 49 * Note that due to overlap of codes between various DSYM categories, 50 * category must be used to distinguish (see libdhcputil). 51 */ 52 typedef struct encoded { 53 uchar_t category; /* Option category */ 54 ushort_t code; /* Option code: 1--254, pkt loc */ 55 uchar_t len; /* len of data */ 56 uchar_t *data; /* Encoded DHCP packet field / option */ 57 struct encoded *prev; /* previous in list */ 58 struct encoded *next; /* next in list */ 59 } ENCODE; 60 61 typedef struct { 62 char class[DSYM_CLASS_SIZE + 1]; /* client class */ 63 ENCODE *head; /* options of this class */ 64 } VNDLIST; 65 66 typedef struct { 67 char nm[DN_MAX_CID_LEN + 1]; /* Macro name */ 68 ENCODE *head; /* head of encoded opts */ 69 int classes; /* num of client classes */ 70 VNDLIST **list; /* table of client classes */ 71 } MACRO; 72 73 /* logging message categories */ 74 typedef enum { 75 L_ASSIGN = 0, /* New assignment */ 76 L_REPLY = 1, /* respond to existing client */ 77 L_RELEASE = 2, /* client released IP */ 78 L_DECLINE = 3, /* client declined IP */ 79 L_INFORM = 4, /* client requested information only */ 80 L_NAK = 5, /* client NAK'ed */ 81 L_ICMP_ECHO = 6, /* Server detected IP in use */ 82 L_RELAY_REQ = 7, /* Relay request to server(s) */ 83 L_RELAY_REP = 8 /* Relay reply to client */ 84 } DHCP_MSG_CATEGORIES; 85 86 typedef enum { 87 P_BOOTP = 0, /* BOOT Protocol */ 88 P_DHCP = 1 /* DHC Protocol */ 89 } DHCP_PROTO; 90 91 #define DHCPD "in.dhcpd" /* daemon's name */ 92 #define DAEMON_VERS "3.5" /* daemon's version number */ 93 #define ENC_COPY 0 /* Copy encode list */ 94 #define ENC_DONT_COPY 1 /* don't copy encode list */ 95 #define DHCP_MAX_REPLY_SIZE 8192 /* should be big enough */ 96 #define DHCP_MIN_RECORDS 32 /* should be big enough */ 97 #define DHCP_ICMP_ATTEMPTS 1 /* Number of ping attempts */ 98 #define DHCP_ICMP_TIMEOUT 1000 /* Wait # millisecs for resp */ 99 #define DHCP_ARP_ADD 0 /* Add an ARP table entry */ 100 #define DHCP_ARP_DEL 1 /* Del an ARP table entry */ 101 #define DHCP_SCRATCH 128 /* scratch buffer size */ 102 #define NEW_DHCPTAB 0 /* load initial dhcptab */ 103 #define PRESERVE_DHCPTAB 1 /* preserve previous dhcptab */ 104 #define DEFAULT_LEASE 3600 /* Default if not specified */ 105 #define DHCP_RDCOP_RETRIES 3 /* Attempts to read options */ 106 #define HASHTABLESIZE 257 /* must be a prime number */ 107 #define DHCP_RESCAN_SCALE 60L /* scale rescan_interval */ 108 109 #define DHCP_MIN_CLIENTS 32 /* minimum client structs */ 110 #define DHCP_DEFAULT_CLIENTS 1024 /* default client structs */ 111 #define DHCP_MINFREE_CLIENTS 8 /* minimum free clients */ 112 #define DHCP_NSS_LWP 32 /* free lwps for nss lib use */ 113 #define DHCP_NSS_TIME 3 /* name service cache time */ 114 #define DHCP_NO_NSU (-1) /* No Name service updates */ 115 116 /* load option flags */ 117 #define DHCP_DHCP_CLNT 1 /* It's a DHCP client */ 118 #define DHCP_SEND_LEASE 2 /* Send lease parameters */ 119 #define DHCP_NON_RFC1048 4 /* non-rfc1048 magic cookie */ 120 #define DHCP_OVRLD_CLR ((uchar_t)0x00) /* SNAME/FILE clear */ 121 #define DHCP_OVRLD_FILE ((uchar_t)0x01) /* FILE in use */ 122 #define DHCP_OVRLD_SNAME ((uchar_t)0x02) /* SNAME in use */ 123 #define DHCP_OVRLD_ALL ((uchar_t)0x03) /* All overload space in use */ 124 125 /* dhcp_lookup_dd_classify search flags */ 126 #define S_CID 0x01 /* find a client match */ 127 #define S_FREE 0x02 /* find a free record */ 128 #define S_LRU 0x04 /* find an lru record */ 129 130 /* DHCP client states */ 131 #define INIT_STATE 1 132 #define INIT_REBOOT_STATE 2 133 #define RENEW_REBIND_STATE 3 134 135 extern int debug; 136 extern boolean_t verbose; 137 extern boolean_t noping; 138 extern boolean_t no_dhcptab; 139 extern boolean_t server_mode; 140 extern boolean_t be_automatic; 141 extern uchar_t max_hops; 142 extern int log_local; 143 extern int icmp_tries; 144 extern time_t off_secs; 145 extern time_t cache_secs; 146 extern time_t renog_secs; 147 extern time_t min_lru; 148 extern time_t icmp_timeout; 149 extern time_t nsutimeout_secs; 150 extern boolean_t time_to_go; 151 extern struct in_addr server_ip; 152 extern struct in_addr *owner_ip; 153 extern dsvc_datastore_t datastore; 154 extern int max_threads; /* maximum number of threads per net */ 155 extern int max_clients; /* maximum number of clients per net */ 156 extern ushort_t port_offset; /* offset to port for multiple server */ 157 extern int net_thresh; /* secs to keep pernet reference */ 158 extern int clnt_thresh; /* secs to keep client reference */ 159 extern time_t reinit_time; /* reinitialization time */ 160 extern struct __res_state resolv_conf; 161 #ifdef DEBUG 162 extern char *dbg_net; /* simulated debug net (see misc.c) */ 163 #endif /* DEBUG */ 164 165 extern void *reinitialize(void *); 166 extern PKT *gen_bootp_pkt(int, PKT *); 167 extern int initmtab(void); 168 extern int initntab(void); 169 extern int checktab(void); 170 extern int readtab(int); 171 extern void resettab(boolean_t); 172 extern int relay_agent_init(char *); 173 extern void dhcpmsg(int, const char *, ...); 174 extern void *smalloc(unsigned); 175 extern void *srealloc(void *, uint_t); 176 extern struct in_addr *match_ownerip(in_addr_t); 177 extern void *stack_create(unsigned int); 178 extern ENCODE *combine_encodes(ENCODE *, ENCODE *, int); 179 extern void open_macros(void); 180 extern void close_macros(void); 181 extern MACRO *get_macro(char *); 182 extern ENCODE *find_encode(ENCODE *, uchar_t, ushort_t); 183 extern ENCODE *dup_encode(ENCODE *); 184 extern ENCODE *make_encode(uchar_t, ushort_t, uchar_t, void *, int); 185 extern ENCODE *dup_encode_list(ENCODE *); 186 extern void free_encode_list(ENCODE *); 187 extern void free_encode(ENCODE *); 188 extern void replace_encode(ENCODE **, ENCODE *, int); 189 extern ENCODE *vendor_encodes(MACRO *, char *); 190 extern char *disp_cid(PKT_LIST *, char *, int); 191 extern void get_clnt_id(PKT_LIST *, uchar_t *, int, uchar_t *); 192 extern char *get_class_id(PKT_LIST *, char *, int); 193 extern int load_options(int, PKT_LIST *, PKT *, int, uchar_t *, ENCODE *, 194 ENCODE *); 195 extern void free_plp(PKT_LIST *); 196 extern void logtrans(DHCP_PROTO, DHCP_MSG_CATEGORIES, time_t, 197 struct in_addr, struct in_addr, PKT_LIST *); 198 extern int icmp_echo_check(struct in_addr *, boolean_t *); 199 extern void *monitor_client(void *); 200 201 extern void dhcp(dsvc_clnt_t *, PKT_LIST *); 202 boolean_t update_offer(dsvc_clnt_t *, dn_rec_list_t **, lease_t, 203 struct in_addr *, boolean_t); 204 extern void bootp(dsvc_clnt_t *, PKT_LIST *); 205 extern void get_netmask(struct in_addr *, struct in_addr *); 206 extern boolean_t select_offer(dsvc_dnet_t *dbp, PKT_LIST *, dsvc_clnt_t *, 207 dn_rec_list_t **); 208 209 extern int dhcp_open_dd(dsvc_handle_t *, dsvc_datastore_t *, dsvc_contype_t, 210 const char *, uint_t); 211 extern int dhcp_close_dd(dsvc_handle_t *); 212 extern int dhcp_modify_dd_entry(dsvc_handle_t, const void *, void *); 213 extern void dhcp_free_dd_list(dsvc_handle_t, void *); 214 215 extern void *dhcp_lookup_dd_classify(dsvc_dnet_t *, boolean_t, uint_t, int, 216 const dn_rec_t *, void **, int); 217 218 extern dn_rec_list_t *detach_dnrec_from_list(dn_rec_list_t *, dn_rec_list_t *, 219 dn_rec_list_t **); 220 221 extern int qualify_hostname(char *, const char *, const char *, int, int); 222 223 #ifdef __cplusplus 224 } 225 #endif 226 227 #endif /* _DHCPD_H */ 228