1 /* SPDX-License-Identifier: BSD-2-Clause */ 2 /* 3 * dhcpcd - DHCP client daemon 4 * Copyright (c) 2006-2023 Roy Marples <roy@marples.name> 5 * All rights reserved 6 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #ifndef IF_OPTIONS_H 30 #define IF_OPTIONS_H 31 32 #include <sys/param.h> 33 #include <sys/socket.h> 34 #include <net/if.h> 35 #include <netinet/in.h> 36 37 #include <getopt.h> 38 #include <limits.h> 39 #include <stdint.h> 40 41 #include "auth.h" 42 #include "route.h" 43 44 /* Don't set any optional arguments here so we retain POSIX 45 * compatibility with getopt */ 46 #define IF_OPTS "146bc:de:f:gh:i:j:kl:m:no:pqr:s:t:u:v:wxy:z:" \ 47 "ABC:DEF:GHI:JKLMNO:PQ:S:TUVW:X:Z:" 48 #define NOERR_IF_OPTS ":" IF_OPTS 49 50 #define DEFAULT_TIMEOUT 30 51 #define DEFAULT_REBOOT 5 52 #define DEFAULT_REQUEST 180 /* secs to request, mirror DHCP6 */ 53 #define DEFAULT_FALLBACK 5 /* secs until fallback */ 54 #define DEFAULT_IPV4LL 5 /* secs until ipv4ll */ 55 56 #ifndef HOSTNAME_MAX_LEN 57 #define HOSTNAME_MAX_LEN 250 /* 255 - 3 (FQDN) - 2 (DNS enc) */ 58 #endif 59 #define VENDORCLASSID_MAX_LEN 255 60 #define CLIENTID_MAX_LEN 48 61 #define USERCLASS_MAX_LEN 255 62 #define VENDOR_MAX_LEN 255 63 #define MUDURL_MAX_LEN 255 64 65 #define DHCPCD_ARP (1ULL << 0) 66 #define DHCPCD_RELEASE (1ULL << 1) 67 #define DHCPCD_RTBUILD (1ULL << 2) 68 #define DHCPCD_GATEWAY (1ULL << 3) 69 #define DHCPCD_STATIC (1ULL << 4) 70 #define DHCPCD_DEBUG (1ULL << 5) 71 #define DHCPCD_ARP_PERSISTDEFENCE (1ULL << 6) 72 #define DHCPCD_LASTLEASE (1ULL << 7) 73 #define DHCPCD_INFORM (1ULL << 8) 74 #define DHCPCD_REQUEST (1ULL << 9) 75 #define DHCPCD_IPV4LL (1ULL << 10) 76 #define DHCPCD_DUID (1ULL << 11) 77 #define DHCPCD_PERSISTENT (1ULL << 12) 78 #define DHCPCD_DAEMONISE (1ULL << 14) 79 #define DHCPCD_DAEMONISED (1ULL << 15) 80 #define DHCPCD_TEST (1ULL << 16) 81 #define DHCPCD_MANAGER (1ULL << 17) 82 #define DHCPCD_HOSTNAME (1ULL << 18) 83 #define DHCPCD_CLIENTID (1ULL << 19) 84 #define DHCPCD_LINK (1ULL << 20) 85 #define DHCPCD_ANONYMOUS (1ULL << 21) 86 #define DHCPCD_BACKGROUND (1ULL << 22) 87 #define DHCPCD_VENDORRAW (1ULL << 23) 88 #define DHCPCD_NOWAITIP (1ULL << 24) /* To force daemonise */ 89 #define DHCPCD_WAITIP (1ULL << 25) 90 #define DHCPCD_SLAACPRIVATE (1ULL << 26) 91 #define DHCPCD_CSR_WARNED (1ULL << 27) 92 #define DHCPCD_XID_HWADDR (1ULL << 28) 93 #define DHCPCD_BROADCAST (1ULL << 29) 94 #define DHCPCD_DUMPLEASE (1ULL << 30) 95 #define DHCPCD_IPV6RS (1ULL << 31) 96 #define DHCPCD_IPV6RA_REQRDNSS (1ULL << 32) 97 #define DHCPCD_PRIVSEP (1ULL << 33) 98 #define DHCPCD_CONFIGURE (1ULL << 34) 99 #define DHCPCD_IPV4 (1ULL << 35) 100 #define DHCPCD_FORKED (1ULL << 36) 101 #define DHCPCD_IPV6 (1ULL << 37) 102 #define DHCPCD_STARTED (1ULL << 38) 103 #define DHCPCD_NOALIAS (1ULL << 39) 104 #define DHCPCD_IA_FORCED (1ULL << 40) 105 #define DHCPCD_STOPPING (1ULL << 41) 106 #define DHCPCD_LAUNCHER (1ULL << 42) 107 #define DHCPCD_HOSTNAME_SHORT (1ULL << 43) 108 #define DHCPCD_EXITING (1ULL << 44) 109 #define DHCPCD_WAITIP4 (1ULL << 45) 110 #define DHCPCD_WAITIP6 (1ULL << 46) 111 #define DHCPCD_DEV (1ULL << 47) 112 #define DHCPCD_IAID (1ULL << 48) 113 #define DHCPCD_DHCP (1ULL << 49) 114 #define DHCPCD_DHCP6 (1ULL << 50) 115 #define DHCPCD_IF_UP (1ULL << 51) 116 #define DHCPCD_INFORM6 (1ULL << 52) 117 #define DHCPCD_WANTDHCP (1ULL << 53) 118 #define DHCPCD_IPV6RA_AUTOCONF (1ULL << 54) 119 #define DHCPCD_ROUTER_HOST_ROUTE_WARNED (1ULL << 55) 120 #define DHCPCD_LASTLEASE_EXTEND (1ULL << 56) 121 #define DHCPCD_BOOTP (1ULL << 57) 122 #define DHCPCD_INITIAL_DELAY (1ULL << 58) 123 #define DHCPCD_PRINT_PIDFILE (1ULL << 59) 124 #define DHCPCD_ONESHOT (1ULL << 60) 125 #define DHCPCD_INACTIVE (1ULL << 61) 126 #define DHCPCD_SLAACTEMP (1ULL << 62) 127 #define DHCPCD_PRIVSEPROOT (1ULL << 63) 128 129 #define DHCPCD_NODROP (DHCPCD_EXITING | DHCPCD_PERSISTENT) 130 131 #define DHCPCD_WAITOPTS (DHCPCD_WAITIP | DHCPCD_WAITIP4 | DHCPCD_WAITIP6) 132 133 #define DHCPCD_WARNINGS (DHCPCD_CSR_WARNED | \ 134 DHCPCD_ROUTER_HOST_ROUTE_WARNED) 135 136 /* These options only make sense in the config file, so don't use any 137 valid short options for them */ 138 #define O_BASE MAX('z', 'Z') + 1 139 #define O_ARPING O_BASE + 1 140 #define O_FALLBACK O_BASE + 2 141 #define O_DESTINATION O_BASE + 3 142 #define O_IPV6RS O_BASE + 4 143 #define O_NOIPV6RS O_BASE + 5 144 #define O_IPV6RA_FORK O_BASE + 6 145 #define O_LINK_RCVBUF O_BASE + 7 146 #define O_ANONYMOUS O_BASE + 8 147 #define O_NOALIAS O_BASE + 9 148 #define O_IA_NA O_BASE + 10 149 #define O_IA_TA O_BASE + 11 150 #define O_IA_PD O_BASE + 12 151 #define O_HOSTNAME_SHORT O_BASE + 13 152 #define O_DEV O_BASE + 14 153 #define O_NODEV O_BASE + 15 154 #define O_NOIPV4 O_BASE + 16 155 #define O_NOIPV6 O_BASE + 17 156 #define O_IAID O_BASE + 18 157 #define O_DEFINE O_BASE + 19 158 #define O_DEFINE6 O_BASE + 20 159 #define O_EMBED O_BASE + 21 160 #define O_ENCAP O_BASE + 22 161 #define O_VENDOPT O_BASE + 23 162 #define O_VENDCLASS O_BASE + 24 163 #define O_AUTHPROTOCOL O_BASE + 25 164 #define O_AUTHTOKEN O_BASE + 26 165 #define O_AUTHNOTREQUIRED O_BASE + 27 166 #define O_NODHCP O_BASE + 28 167 #define O_NODHCP6 O_BASE + 29 168 #define O_DHCP O_BASE + 30 169 #define O_DHCP6 O_BASE + 31 170 #define O_IPV4 O_BASE + 32 171 #define O_IPV6 O_BASE + 33 172 #define O_CONTROLGRP O_BASE + 34 173 #define O_SLAAC O_BASE + 35 174 #define O_GATEWAY O_BASE + 36 175 #define O_NOUP O_BASE + 37 176 #define O_IPV6RA_AUTOCONF O_BASE + 38 177 #define O_IPV6RA_NOAUTOCONF O_BASE + 39 178 #define O_REJECT O_BASE + 40 179 #define O_BOOTP O_BASE + 42 180 #define O_DEFINEND O_BASE + 43 181 #define O_NODELAY O_BASE + 44 182 #define O_INFORM6 O_BASE + 45 183 #define O_LASTLEASE_EXTEND O_BASE + 46 184 #define O_INACTIVE O_BASE + 47 185 #define O_MUDURL O_BASE + 48 186 #define O_MSUSERCLASS O_BASE + 49 187 #define O_CONFIGURE O_BASE + 50 188 #define O_NOCONFIGURE O_BASE + 51 189 #define O_RANDOMISE_HWADDR O_BASE + 52 190 #define O_ARP_PERSISTDEFENCE O_BASE + 53 191 #define O_REQUEST_TIME O_BASE + 54 192 #define O_FALLBACK_TIME O_BASE + 55 193 #define O_IPV4LL_TIME O_BASE + 56 194 195 extern const struct option cf_options[]; 196 197 struct if_sla { 198 char ifname[IF_NAMESIZE]; 199 uint32_t sla; 200 uint8_t prefix_len; 201 uint64_t suffix; 202 bool sla_set; 203 }; 204 205 struct if_ia { 206 uint8_t iaid[4]; 207 #ifdef INET6 208 uint16_t ia_type; 209 uint8_t iaid_set; 210 struct in6_addr addr; 211 uint8_t prefix_len; 212 #ifndef SMALL 213 uint32_t sla_max; 214 size_t sla_len; 215 struct if_sla *sla; 216 #endif 217 #endif 218 }; 219 220 struct vivco { 221 size_t len; 222 uint8_t *data; 223 }; 224 225 struct if_options { 226 time_t mtime; 227 uint8_t iaid[4]; 228 int metric; 229 uint8_t requestmask[256 / NBBY]; 230 uint8_t requiremask[256 / NBBY]; 231 uint8_t nomask[256 / NBBY]; 232 uint8_t rejectmask[256 / NBBY]; 233 uint8_t dstmask[256 / NBBY]; 234 uint8_t requestmasknd[(UINT16_MAX + 1) / NBBY]; 235 uint8_t requiremasknd[(UINT16_MAX + 1) / NBBY]; 236 uint8_t nomasknd[(UINT16_MAX + 1) / NBBY]; 237 uint8_t rejectmasknd[(UINT16_MAX + 1) / NBBY]; 238 uint8_t requestmask6[(UINT16_MAX + 1) / NBBY]; 239 uint8_t requiremask6[(UINT16_MAX + 1) / NBBY]; 240 uint8_t nomask6[(UINT16_MAX + 1) / NBBY]; 241 uint8_t rejectmask6[(UINT16_MAX + 1) / NBBY]; 242 uint32_t leasetime; 243 uint32_t timeout; 244 uint32_t reboot; 245 uint32_t request_time; 246 uint32_t fallback_time; 247 uint32_t ipv4ll_time; 248 unsigned long long options; 249 bool randomise_hwaddr; 250 251 struct in_addr req_addr; 252 struct in_addr req_mask; 253 struct in_addr req_brd; 254 rb_tree_t routes; 255 struct in6_addr req_addr6; 256 uint8_t req_prefix_len; 257 unsigned int mtu; 258 char **config; 259 260 char **environ; 261 262 char hostname[HOSTNAME_MAX_LEN + 1]; /* We don't store the length */ 263 uint8_t fqdn; 264 uint8_t vendorclassid[VENDORCLASSID_MAX_LEN + 2]; 265 uint8_t clientid[CLIENTID_MAX_LEN + 2]; 266 uint8_t userclass[USERCLASS_MAX_LEN + 2]; 267 uint8_t vendor[VENDOR_MAX_LEN + 2]; 268 uint8_t mudurl[MUDURL_MAX_LEN + 2]; 269 270 size_t blacklist_len; 271 in_addr_t *blacklist; 272 size_t whitelist_len; 273 in_addr_t *whitelist; 274 ssize_t arping_len; 275 in_addr_t *arping; 276 char *fallback; 277 278 struct if_ia *ia; 279 size_t ia_len; 280 #ifdef INET6 281 struct in6_addr token; 282 #endif 283 284 struct dhcp_opt *dhcp_override; 285 size_t dhcp_override_len; 286 struct dhcp_opt *nd_override; 287 size_t nd_override_len; 288 struct dhcp_opt *dhcp6_override; 289 size_t dhcp6_override_len; 290 uint32_t vivco_en; 291 struct vivco *vivco; 292 size_t vivco_len; 293 struct dhcp_opt *vivso_override; 294 size_t vivso_override_len; 295 296 struct auth auth; 297 }; 298 299 struct if_options *read_config(struct dhcpcd_ctx *, 300 const char *, const char *, const char *); 301 int add_options(struct dhcpcd_ctx *, const char *, 302 struct if_options *, int, char **); 303 void free_dhcp_opt_embenc(struct dhcp_opt *); 304 void free_options(struct dhcpcd_ctx *, struct if_options *); 305 306 #endif 307