1 /* SPDX-License-Identifier: BSD-2-Clause */ 2 /* 3 * dhcpcd - DHCP client daemon 4 * Copyright (c) 2006-2025 Roy Marples <roy (at) 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 DHCP_OPTION_MAX_LEN 255 60 61 #define DHCPCD_ARP (1ULL << 0) 62 #define DHCPCD_RELEASE (1ULL << 1) 63 #define DHCPCD_RTBUILD (1ULL << 2) 64 #define DHCPCD_GATEWAY (1ULL << 3) 65 #define DHCPCD_STATIC (1ULL << 4) 66 // unused (1ULL << 5) 67 #define DHCPCD_ARP_PERSISTDEFENCE (1ULL << 6) 68 #define DHCPCD_LASTLEASE (1ULL << 7) 69 #define DHCPCD_INFORM (1ULL << 8) 70 #define DHCPCD_REQUEST (1ULL << 9) 71 #define DHCPCD_IPV4LL (1ULL << 10) 72 #define DHCPCD_DUID (1ULL << 11) 73 #define DHCPCD_PERSISTENT (1ULL << 12) 74 #define DHCPCD_DAEMONISE (1ULL << 14) 75 #define DHCPCD_DAEMONISED (1ULL << 15) 76 #define DHCPCD_TEST (1ULL << 16) 77 #define DHCPCD_MANAGER (1ULL << 17) 78 #define DHCPCD_HOSTNAME (1ULL << 18) 79 #define DHCPCD_CLIENTID (1ULL << 19) 80 #define DHCPCD_LINK (1ULL << 20) 81 #define DHCPCD_ANONYMOUS (1ULL << 21) 82 #define DHCPCD_BACKGROUND (1ULL << 22) 83 #define DHCPCD_VENDORRAW (1ULL << 23) 84 // unused (1ULL << 24) 85 #define DHCPCD_WAITIP (1ULL << 25) 86 #define DHCPCD_SLAACPRIVATE (1ULL << 26) 87 #define DHCPCD_CSR_WARNED (1ULL << 27) 88 #define DHCPCD_XID_HWADDR (1ULL << 28) 89 #define DHCPCD_BROADCAST (1ULL << 29) 90 #define DHCPCD_DUMPLEASE (1ULL << 30) 91 #define DHCPCD_IPV6RS (1ULL << 31) 92 #define DHCPCD_IPV6RA_REQRDNSS (1ULL << 32) 93 #define DHCPCD_PRIVSEP (1ULL << 33) 94 #define DHCPCD_CONFIGURE (1ULL << 34) 95 #define DHCPCD_IPV4 (1ULL << 35) 96 #define DHCPCD_FORKED (1ULL << 36) 97 #define DHCPCD_IPV6 (1ULL << 37) 98 #define DHCPCD_STARTED (1ULL << 38) 99 #define DHCPCD_NOALIAS (1ULL << 39) 100 #define DHCPCD_IA_FORCED (1ULL << 40) 101 #define DHCPCD_STOPPING (1ULL << 41) 102 #define DHCPCD_LAUNCHER (1ULL << 42) 103 #define DHCPCD_HOSTNAME_SHORT (1ULL << 43) 104 #define DHCPCD_EXITING (1ULL << 44) 105 #define DHCPCD_WAITIP4 (1ULL << 45) 106 #define DHCPCD_WAITIP6 (1ULL << 46) 107 #define DHCPCD_DEV (1ULL << 47) 108 #define DHCPCD_IAID (1ULL << 48) 109 #define DHCPCD_DHCP (1ULL << 49) 110 #define DHCPCD_DHCP6 (1ULL << 50) 111 #define DHCPCD_IF_UP (1ULL << 51) 112 #define DHCPCD_INFORM6 (1ULL << 52) 113 #define DHCPCD_WANTDHCP (1ULL << 53) 114 #define DHCPCD_IPV6RA_AUTOCONF (1ULL << 54) 115 #define DHCPCD_ROUTER_HOST_ROUTE_WARNED (1ULL << 55) 116 #define DHCPCD_LASTLEASE_EXTEND (1ULL << 56) 117 #define DHCPCD_BOOTP (1ULL << 57) 118 #define DHCPCD_INITIAL_DELAY (1ULL << 58) 119 #define DHCPCD_PRINT_PIDFILE (1ULL << 59) 120 #define DHCPCD_ONESHOT (1ULL << 60) 121 #define DHCPCD_INACTIVE (1ULL << 61) 122 #define DHCPCD_SLAACTEMP (1ULL << 62) 123 #define DHCPCD_PRIVSEPROOT (1ULL << 63) 124 125 #define DHCPCD_NODROP (DHCPCD_EXITING | DHCPCD_PERSISTENT) 126 127 #define DHCPCD_WAITOPTS (DHCPCD_WAITIP | DHCPCD_WAITIP4 | DHCPCD_WAITIP6) 128 129 #define DHCPCD_WARNINGS (DHCPCD_CSR_WARNED | \ 130 DHCPCD_ROUTER_HOST_ROUTE_WARNED) 131 132 /* These options only make sense in the config file, so don't use any 133 valid short options for them */ 134 #define O_BASE MAX('z', 'Z') + 1 135 #define O_ARPING O_BASE + 1 136 #define O_FALLBACK O_BASE + 2 137 #define O_DESTINATION O_BASE + 3 138 #define O_IPV6RS O_BASE + 4 139 #define O_NOIPV6RS O_BASE + 5 140 #define O_IPV6RA_FORK O_BASE + 6 141 #define O_LINK_RCVBUF O_BASE + 7 142 #define O_ANONYMOUS O_BASE + 8 143 #define O_NOALIAS O_BASE + 9 144 #define O_IA_NA O_BASE + 10 145 #define O_IA_TA O_BASE + 11 146 #define O_IA_PD O_BASE + 12 147 #define O_HOSTNAME_SHORT O_BASE + 13 148 #define O_DEV O_BASE + 14 149 #define O_NODEV O_BASE + 15 150 #define O_NOIPV4 O_BASE + 16 151 #define O_NOIPV6 O_BASE + 17 152 #define O_IAID O_BASE + 18 153 #define O_DEFINE O_BASE + 19 154 #define O_DEFINE6 O_BASE + 20 155 #define O_EMBED O_BASE + 21 156 #define O_ENCAP O_BASE + 22 157 #define O_VENDOPT O_BASE + 23 158 #define O_VENDCLASS O_BASE + 24 159 #define O_AUTHPROTOCOL O_BASE + 25 160 #define O_AUTHTOKEN O_BASE + 26 161 #define O_AUTHNOTREQUIRED O_BASE + 27 162 #define O_NODHCP O_BASE + 28 163 #define O_NODHCP6 O_BASE + 29 164 #define O_DHCP O_BASE + 30 165 #define O_DHCP6 O_BASE + 31 166 #define O_IPV4 O_BASE + 32 167 #define O_IPV6 O_BASE + 33 168 #define O_CONTROLGRP O_BASE + 34 169 #define O_SLAAC O_BASE + 35 170 #define O_GATEWAY O_BASE + 36 171 #define O_NOUP O_BASE + 37 172 #define O_IPV6RA_AUTOCONF O_BASE + 38 173 #define O_IPV6RA_NOAUTOCONF O_BASE + 39 174 #define O_REJECT O_BASE + 40 175 #define O_BOOTP O_BASE + 42 176 #define O_DEFINEND O_BASE + 43 177 #define O_NODELAY O_BASE + 44 178 #define O_INFORM6 O_BASE + 45 179 #define O_LASTLEASE_EXTEND O_BASE + 46 180 #define O_INACTIVE O_BASE + 47 181 #define O_MUDURL O_BASE + 48 182 #define O_MSUSERCLASS O_BASE + 49 183 #define O_CONFIGURE O_BASE + 50 184 #define O_NOCONFIGURE O_BASE + 51 185 #define O_RANDOMISE_HWADDR O_BASE + 52 186 #define O_ARP_PERSISTDEFENCE O_BASE + 53 187 #define O_REQUEST_TIME O_BASE + 54 188 #define O_FALLBACK_TIME O_BASE + 55 189 #define O_IPV4LL_TIME O_BASE + 56 190 #define O_VSIO O_BASE + 57 191 #define O_VSIO6 O_BASE + 58 192 #define O_NOSYSLOG O_BASE + 59 193 194 extern const struct option cf_options[]; 195 196 struct if_sla { 197 char ifname[IF_NAMESIZE]; 198 uint32_t sla; 199 uint8_t prefix_len; 200 uint64_t suffix; 201 bool sla_set; 202 }; 203 204 struct if_ia { 205 uint8_t iaid[4]; 206 #ifdef INET6 207 uint16_t ia_type; 208 uint8_t iaid_set; 209 struct in6_addr addr; 210 uint8_t prefix_len; 211 #ifndef SMALL 212 uint32_t sla_max; 213 size_t sla_len; 214 struct if_sla *sla; 215 #endif 216 #endif 217 }; 218 219 #ifndef SMALL 220 struct vivco { 221 uint32_t en; 222 size_t len; 223 uint8_t *data; 224 }; 225 struct vsio_so { 226 uint16_t opt; 227 uint16_t len; 228 void *data; 229 }; 230 struct vsio { 231 uint32_t en; 232 size_t so_len; 233 struct vsio_so *so; 234 }; 235 #endif 236 237 struct if_options { 238 time_t mtime; 239 uint8_t iaid[4]; 240 int metric; 241 uint8_t requestmask[256 / NBBY]; 242 uint8_t requiremask[256 / NBBY]; 243 uint8_t nomask[256 / NBBY]; 244 uint8_t rejectmask[256 / NBBY]; 245 uint8_t dstmask[256 / NBBY]; 246 uint8_t requestmasknd[(UINT16_MAX + 1) / NBBY]; 247 uint8_t requiremasknd[(UINT16_MAX + 1) / NBBY]; 248 uint8_t nomasknd[(UINT16_MAX + 1) / NBBY]; 249 uint8_t rejectmasknd[(UINT16_MAX + 1) / NBBY]; 250 uint8_t requestmask6[(UINT16_MAX + 1) / NBBY]; 251 uint8_t requiremask6[(UINT16_MAX + 1) / NBBY]; 252 uint8_t nomask6[(UINT16_MAX + 1) / NBBY]; 253 uint8_t rejectmask6[(UINT16_MAX + 1) / NBBY]; 254 uint32_t leasetime; 255 uint32_t timeout; 256 uint32_t reboot; 257 uint32_t request_time; 258 uint32_t fallback_time; 259 uint32_t ipv4ll_time; 260 unsigned long long options; 261 bool randomise_hwaddr; 262 263 struct in_addr req_addr; 264 struct in_addr req_mask; 265 struct in_addr req_brd; 266 rb_tree_t routes; 267 struct in6_addr req_addr6; 268 uint8_t req_prefix_len; 269 unsigned int mtu; 270 char **config; 271 272 char **environ; 273 274 char hostname[HOSTNAME_MAX_LEN + 1]; /* NUL terminated */ 275 uint8_t fqdn; 276 /* The first byte is the option length */ 277 uint8_t vendorclassid[DHCP_OPTION_MAX_LEN + 1]; 278 uint8_t clientid[DHCP_OPTION_MAX_LEN + 1]; 279 uint8_t userclass[DHCP_OPTION_MAX_LEN + 1]; 280 uint8_t vendor[DHCP_OPTION_MAX_LEN + 1]; 281 uint8_t mudurl[DHCP_OPTION_MAX_LEN + 1]; 282 283 size_t blacklist_len; 284 in_addr_t *blacklist; 285 size_t whitelist_len; 286 in_addr_t *whitelist; 287 ssize_t arping_len; 288 in_addr_t *arping; 289 char *fallback; 290 291 struct if_ia *ia; 292 size_t ia_len; 293 #ifdef INET6 294 struct in6_addr token; 295 #endif 296 297 struct dhcp_opt *dhcp_override; 298 size_t dhcp_override_len; 299 struct dhcp_opt *nd_override; 300 size_t nd_override_len; 301 struct dhcp_opt *dhcp6_override; 302 size_t dhcp6_override_len; 303 struct dhcp_opt *vivso_override; 304 size_t vivso_override_len; 305 306 #ifndef SMALL 307 size_t vivco_len; 308 struct vivco *vivco; 309 size_t vsio_len; 310 struct vsio *vsio; 311 size_t vsio6_len; 312 struct vsio *vsio6; 313 #endif 314 315 struct auth auth; 316 }; 317 318 struct if_options *read_config(struct dhcpcd_ctx *, 319 const char *, const char *, const char *); 320 int add_options(struct dhcpcd_ctx *, const char *, 321 struct if_options *, int, char **); 322 void free_dhcp_opt_embenc(struct dhcp_opt *); 323 void free_options(struct dhcpcd_ctx *, struct if_options *); 324 325 char **alloc_args(int argc, char **argv); 326 327 #endif 328
Indexes created Mon May 25 00:24:39 UTC 2026