bsd/netinet/dhcp_options.h

   1
   2 #ifndef _NETINET_DHCP_OPTIONS_H
   3 #define _NETINET_DHCP_OPTIONS_H
   4 #include <sys/appleapiopts.h>
   5 /*
   6  * Copyright (c) 1999-2002 Apple Computer, Inc. All rights reserved.
   7  *
   8  * @APPLE_LICENSE_HEADER_START@
   9  *
  10  * The contents of this file constitute Original Code as defined in and
  11  * are subject to the Apple Public Source License Version 1.1 (the
  12  * "License").  You may not use this file except in compliance with the
  13  * License.  Please obtain a copy of the License at
  14  * http://www.apple.com/publicsource and read it before using this file.
  15  *
  16  * This Original Code and all software distributed under the License are
  17  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  18  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  19  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  20  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  21  * License for the specific language governing rights and limitations
  22  * under the License.
  23  *
  24  * @APPLE_LICENSE_HEADER_END@
  25  */
  26
  27 /*
  28  * dhcp_options.h
  29  * - routines to parse and access dhcp options
  30  */
  31
  32 /*
  33  * Modification History
  34  *
  35  * March 15, 2002       Dieter Siegmund (dieter@apple)
  36  * - imported from bootp project
  37  */
  38 #include <mach/boolean.h>
  39 #include <netinet/dhcp.h>
  40
  41
  42 /* overloaded option values */
  43 #define DHCP_OVERLOAD_FILE      1
  44 #define DHCP_OVERLOAD_SNAME     2
  45 #define DHCP_OVERLOAD_BOTH      3
  46
  47 /*
  48  * DHCP_OPTION_SIZE_MAX
  49  * - the largest size that an option can be (limited to an 8-bit quantity)
  50  */
  51 #define DHCP_OPTION_SIZE_MAX    255
  52
  53 #define DHCP_TAG_OFFSET         0
  54 #define DHCP_LEN_OFFSET         1
  55 #define DHCP_OPTION_OFFSET      2
  56
  57
  58
  59 #define RFC_OPTIONS_MAGIC               { 99, 130, 83, 99 }
  60 #define RFC_MAGIC_SIZE                  4 /* bytes */
  61
  62 typedef enum {
  63     /* rfc 1497 vendor extensions: 0..18, 255 */
  64     dhcptag_pad_e                       = 0,
  65     dhcptag_end_e                       = 255,
  66     dhcptag_subnet_mask_e               = 1,
  67     dhcptag_time_offset_e               = 2,
  68     dhcptag_router_e                    = 3,
  69     dhcptag_time_server_e               = 4,
  70     dhcptag_name_server_e               = 5,
  71     dhcptag_domain_name_server_e        = 6,
  72     dhcptag_log_server_e                = 7,
  73     dhcptag_cookie_server_e             = 8,
  74     dhcptag_lpr_server_e                = 9,
  75     dhcptag_impress_server_e            = 10,
  76     dhcptag_resource_location_server_e  = 11,
  77     dhcptag_host_name_e                 = 12,
  78     dhcptag_boot_file_size_e            = 13,
  79     dhcptag_merit_dump_file_e           = 14,
  80     dhcptag_domain_name_e               = 15,
  81     dhcptag_swap_server_e               = 16,
  82     dhcptag_root_path_e                 = 17,
  83     dhcptag_extensions_path_e           = 18,
  84
  85     /* ip layer parameters per host: 19..25 */
  86     dhcptag_ip_forwarding_e             = 19,
  87     dhcptag_non_local_source_routing_e  = 20,
  88     dhcptag_policy_filter_e             = 21,
  89     dhcptag_max_dgram_reassembly_size_e = 22,
  90     dhcptag_default_ip_time_to_live_e   = 23,
  91     dhcptag_path_mtu_aging_timeout_e    = 24,
  92     dhcptag_path_mtu_plateau_table_e    = 25,
  93
  94     /* ip layer parameters per interface: 26..33 */
  95     dhcptag_interface_mtu_e             = 26,
  96     dhcptag_all_subnets_local_e         = 27,
  97     dhcptag_broadcast_address_e         = 28,
  98     dhcptag_perform_mask_discovery_e    = 29,
  99     dhcptag_mask_supplier_e             = 30,
 100     dhcptag_perform_router_discovery_e  = 31,
 101     dhcptag_router_solicitation_address_e       = 32,
 102     dhcptag_static_route_e              = 33,
 103     dhcptag_trailer_encapsulation_e     = 34,
 104     dhcptag_arp_cache_timeout_e         = 35,
 105     dhcptag_ethernet_encapsulation_e    = 36,
 106
 107     /* tcp parameters: 37..39 */
 108     dhcptag_default_ttl_e               = 37,
 109     dhcptag_keepalive_interval_e        = 38,
 110     dhcptag_keepalive_garbage_e         = 39,
 111
 112     /* application & service parameters: 40..49, 64, 65, 68..76, 78, 79, 95 */
 113     dhcptag_nis_domain_e                = 40,
 114     dhcptag_nis_servers_e               = 41,
 115     dhcptag_network_time_protocol_servers_e     = 42,
 116     dhcptag_vendor_specific_e           = 43,
 117     dhcptag_nb_over_tcpip_name_server_e = 44,
 118     dhcptag_nb_over_tcpip_dgram_dist_server_e   = 45,
 119     dhcptag_nb_over_tcpip_node_type_e   = 46,
 120     dhcptag_nb_over_tcpip_scope_e       = 47,
 121     dhcptag_x_windows_font_server_e     = 48,
 122     dhcptag_x_windows_display_manager_e = 49,
 123     dhcptag_nis_plus_domain_e           = 64,
 124     dhcptag_nis_plus_servers_e          = 65,
 125     dhcptag_mobile_ip_home_agent_e      = 68,
 126     dhcptag_smtp_server_e               = 69,
 127     dhcptag_pop3_server_e               = 70,
 128     dhcptag_nntp_server_e               = 71,
 129     dhcptag_default_www_server_e        = 72,
 130     dhcptag_default_finger_server_e     = 73,
 131     dhcptag_default_irc_server_e        = 74,
 132     dhcptag_streettalk_server_e         = 75,
 133     dhcptag_stda_server_e               = 76,
 134     dhcptag_slp_directory_agent_e       = 78,
 135     dhcptag_slp_service_scope_e         = 79,
 136     dhcptag_ldap_url_e                  = 95,
 137
 138     /* dhcp-specific extensions: 50..61, 66, 67 */
 139     dhcptag_requested_ip_address_e      = 50,
 140     dhcptag_lease_time_e                = 51,
 141     dhcptag_option_overload_e           = 52,
 142     dhcptag_dhcp_message_type_e         = 53,
 143     dhcptag_server_identifier_e         = 54,
 144     dhcptag_parameter_request_list_e    = 55,
 145     dhcptag_message_e                   = 56,
 146     dhcptag_max_dhcp_message_size_e     = 57,
 147     dhcptag_renewal_t1_time_value_e     = 58,
 148     dhcptag_rebinding_t2_time_value_e   = 59,
 149     dhcptag_vendor_class_identifier_e   = 60,
 150     dhcptag_client_identifier_e         = 61,
 151     dhcptag_tftp_server_name_e          = 66,
 152     dhcptag_bootfile_name_e             = 67,
 153
 154     /* netinfo parent tags: 112, 113 */
 155     dhcptag_netinfo_server_address_e    = 112,
 156     dhcptag_netinfo_server_tag_e        = 113,
 157
 158     /* ad-hoc network disable option */
 159     dhcptag_auto_configure_e            = 116,
 160 } dhcptag_t;
 161
 162 /*
 163  * Module: dhcpol (dhcp options list)
 164  *
 165  * Purpose:
 166  *   Routines to parse and retrieve dhcp options.
 167  */
 168
 169 typedef struct {
 170     void * *    array;  /* malloc'd array of pointers */
 171     int         size;   /* number of elements in array */
 172     int         count;  /* number of occupied elements */
 173 } ptrlist_t;
 174
 175 typedef ptrlist_t dhcpol_t;
 176
 177 #ifdef KERNEL_PRIVATE
 178
 179 void                    dhcpol_init(dhcpol_t * list);
 180 void                    dhcpol_free(dhcpol_t * list);
 181 int                     dhcpol_count(dhcpol_t * list);
 182 boolean_t               dhcpol_add(dhcpol_t * list, void * element);
 183 void *                  dhcpol_element(dhcpol_t * list, int i);
 184 boolean_t               dhcpol_concat(dhcpol_t * list, dhcpol_t * extra);
 185 boolean_t               dhcpol_parse_buffer(dhcpol_t * list, void * buffer,
 186                                             int length, unsigned char * err);
 187 void *                  dhcpol_find(dhcpol_t * list, int tag, int * len_p,
 188                                     int * start);
 189 void *                  dhcpol_get(dhcpol_t * list, int tag, int * len_p);
 190 boolean_t               dhcpol_parse_packet(dhcpol_t * options,
 191                                             struct dhcp * pkt, int len,
 192                                             unsigned char * err);
 193 boolean_t               dhcpol_parse_vendor(dhcpol_t * vendor,
 194                                             dhcpol_t * options,
 195                                             unsigned char * err);
 196 void                    dhcpol_print(dhcpol_t * list);
 197 #endif KERNEL_PRIVATE
 198 #endif /* _NETINET_DHCP_OPTIONS_H */