1 #ifndef _NETINET_DHCP_OPTIONS_H 2 #define _NETINET_DHCP_OPTIONS_H 3 #include <sys/appleapiopts.h> 4 /* 5 * Copyright (c) 1999-2016 Apple Inc. All rights reserved. 6 * 7 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 8 * 9 * This file contains Original Code and/or Modifications of Original Code 10 * as defined in and that are subject to the Apple Public Source License 11 * Version 2.0 (the 'License'). You may not use this file except in 12 * compliance with the License. The rights granted to you under the License 13 * may not be used to create, or enable the creation or redistribution of, 14 * unlawful or unlicensed copies of an Apple operating system, or to 15 * circumvent, violate, or enable the circumvention or violation of, any 16 * terms of an Apple operating system software license agreement. 17 * 18 * Please obtain a copy of the License at 19 * http://www.opensource.apple.com/apsl/ and read it before using this file. 20 * 21 * The Original Code and all software distributed under the License are 22 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 23 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 24 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 25 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 26 * Please see the License for the specific language governing rights and 27 * limitations under the License. 28 * 29 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 30 */ 31 32 /* 33 * dhcp_options.h 34 * - routines to parse and access dhcp options 35 */ 36 37 /* 38 * Modification History 39 * 40 * March 15, 2002 Dieter Siegmund (dieter@apple) 41 * - imported from bootp project 42 */ 43 #include <mach/boolean.h> 44 #include <netinet/dhcp.h> 45 46 47 /* overloaded option values */ 48 #define DHCP_OVERLOAD_FILE 1 49 #define DHCP_OVERLOAD_SNAME 2 50 #define DHCP_OVERLOAD_BOTH 3 51 52 /* 53 * DHCP_OPTION_SIZE_MAX 54 * - the largest size that an option can be (limited to an 8-bit quantity) 55 */ 56 #define DHCP_OPTION_SIZE_MAX 255 57 58 #define DHCP_TAG_OFFSET 0 59 #define DHCP_LEN_OFFSET 1 60 #define DHCP_OPTION_OFFSET 2 61 62 63 64 #define RFC_OPTIONS_MAGIC { 99, 130, 83, 99 } 65 #define RFC_MAGIC_SIZE 4 /* bytes */ 66 67 enum { 68 /* rfc 1497 vendor extensions: 0..18, 255 */ 69 dhcptag_pad_e = 0, 70 dhcptag_end_e = 255, 71 dhcptag_subnet_mask_e = 1, 72 dhcptag_time_offset_e = 2, 73 dhcptag_router_e = 3, 74 dhcptag_time_server_e = 4, 75 dhcptag_name_server_e = 5, 76 dhcptag_domain_name_server_e = 6, 77 dhcptag_log_server_e = 7, 78 dhcptag_cookie_server_e = 8, 79 dhcptag_lpr_server_e = 9, 80 dhcptag_impress_server_e = 10, 81 dhcptag_resource_location_server_e = 11, 82 dhcptag_host_name_e = 12, 83 dhcptag_boot_file_size_e = 13, 84 dhcptag_merit_dump_file_e = 14, 85 dhcptag_domain_name_e = 15, 86 dhcptag_swap_server_e = 16, 87 dhcptag_root_path_e = 17, 88 dhcptag_extensions_path_e = 18, 89 90 /* ip layer parameters per host: 19..25 */ 91 dhcptag_ip_forwarding_e = 19, 92 dhcptag_non_local_source_routing_e = 20, 93 dhcptag_policy_filter_e = 21, 94 dhcptag_max_dgram_reassembly_size_e = 22, 95 dhcptag_default_ip_time_to_live_e = 23, 96 dhcptag_path_mtu_aging_timeout_e = 24, 97 dhcptag_path_mtu_plateau_table_e = 25, 98 99 /* ip layer parameters per interface: 26..33 */ 100 dhcptag_interface_mtu_e = 26, 101 dhcptag_all_subnets_local_e = 27, 102 dhcptag_broadcast_address_e = 28, 103 dhcptag_perform_mask_discovery_e = 29, 104 dhcptag_mask_supplier_e = 30, 105 dhcptag_perform_router_discovery_e = 31, 106 dhcptag_router_solicitation_address_e = 32, 107 dhcptag_static_route_e = 33, 108 dhcptag_trailer_encapsulation_e = 34, 109 dhcptag_arp_cache_timeout_e = 35, 110 dhcptag_ethernet_encapsulation_e = 36, 111 112 /* tcp parameters: 37..39 */ 113 dhcptag_default_ttl_e = 37, 114 dhcptag_keepalive_interval_e = 38, 115 dhcptag_keepalive_garbage_e = 39, 116 117 /* application & service parameters: 40..49, 64, 65, 68..76, 78, 79, 95 */ 118 dhcptag_nis_domain_e = 40, 119 dhcptag_nis_servers_e = 41, 120 dhcptag_network_time_protocol_servers_e = 42, 121 dhcptag_vendor_specific_e = 43, 122 dhcptag_nb_over_tcpip_name_server_e = 44, 123 dhcptag_nb_over_tcpip_dgram_dist_server_e = 45, 124 dhcptag_nb_over_tcpip_node_type_e = 46, 125 dhcptag_nb_over_tcpip_scope_e = 47, 126 dhcptag_x_windows_font_server_e = 48, 127 dhcptag_x_windows_display_manager_e = 49, 128 dhcptag_nis_plus_domain_e = 64, 129 dhcptag_nis_plus_servers_e = 65, 130 dhcptag_mobile_ip_home_agent_e = 68, 131 dhcptag_smtp_server_e = 69, 132 dhcptag_pop3_server_e = 70, 133 dhcptag_nntp_server_e = 71, 134 dhcptag_default_www_server_e = 72, 135 dhcptag_default_finger_server_e = 73, 136 dhcptag_default_irc_server_e = 74, 137 dhcptag_streettalk_server_e = 75, 138 dhcptag_stda_server_e = 76, 139 dhcptag_slp_directory_agent_e = 78, 140 dhcptag_slp_service_scope_e = 79, 141 dhcptag_ldap_url_e = 95, 142 143 /* dhcp-specific extensions: 50..61, 66, 67 */ 144 dhcptag_requested_ip_address_e = 50, 145 dhcptag_lease_time_e = 51, 146 dhcptag_option_overload_e = 52, 147 dhcptag_dhcp_message_type_e = 53, 148 dhcptag_server_identifier_e = 54, 149 dhcptag_parameter_request_list_e = 55, 150 dhcptag_message_e = 56, 151 dhcptag_max_dhcp_message_size_e = 57, 152 dhcptag_renewal_t1_time_value_e = 58, 153 dhcptag_rebinding_t2_time_value_e = 59, 154 dhcptag_vendor_class_identifier_e = 60, 155 dhcptag_client_identifier_e = 61, 156 dhcptag_tftp_server_name_e = 66, 157 dhcptag_bootfile_name_e = 67, 158 159 /* netinfo parent tags: 112, 113 */ 160 dhcptag_netinfo_server_address_e = 112, 161 dhcptag_netinfo_server_tag_e = 113, 162 163 /* ad-hoc network disable option */ 164 dhcptag_auto_configure_e = 116, 165 }; 166 typedef uint8_t dhcptag_t; 167 168 /* 169 * Module: dhcpol (dhcp options list) 170 * 171 * Purpose: 172 * Routines to parse and retrieve dhcp options. 173 */ 174 175 typedef struct { 176 const void * * array;/* malloc'd array of pointers */ 177 uint32_t size;/* number of elements in array */ 178 uint32_t count;/* number of occupied elements */ 179 } ptrlist_t; 180 181 typedef ptrlist_t dhcpol_t; 182 183 #ifdef BSD_KERNEL_PRIVATE 184 185 void dhcpol_init(dhcpol_t * list); 186 void dhcpol_free(dhcpol_t * list); 187 int dhcpol_count(dhcpol_t * list); 188 boolean_t dhcpol_add(dhcpol_t * list, const void * element); 189 const void * dhcpol_element(dhcpol_t * list, int i); 190 boolean_t dhcpol_concat(dhcpol_t * list, dhcpol_t * extra); 191 boolean_t dhcpol_parse_buffer(dhcpol_t * list, 192 const void * buffer, 193 int length); 194 const void * dhcpol_find(dhcpol_t * list, int tag, int * len_p, 195 int * start); 196 boolean_t dhcpol_parse_packet(dhcpol_t * options, 197 const struct dhcp * pkt, int len); 198 199 #endif /* BSD_KERNEL_PRIVATE */ 200 #endif /* _NETINET_DHCP_OPTIONS_H */ 201