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| Source at commit 1808 created 12 years 4 months ago. By blackosx, Revise layout of package installer 'Welcome' file so it looks cleaner. Change the copyright notice to begin from 2009 as seen in the Chameleon 2.0 r431 installer. Should this date be set earlier? | |
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| 1 | /*␊ |
| 2 | * Copyright (c) 2008 Apple Computer, Inc. All rights reserved.␊ |
| 3 | *␊ |
| 4 | * @APPLE_OSREFERENCE_LICENSE_HEADER_START@␊ |
| 5 | * ␊ |
| 6 | * This file contains Original Code and/or Modifications of Original Code␊ |
| 7 | * as defined in and that are subject to the Apple Public Source License␊ |
| 8 | * Version 2.0 (the 'License'). You may not use this file except in␊ |
| 9 | * compliance with the License. The rights granted to you under the License␊ |
| 10 | * may not be used to create, or enable the creation or redistribution of,␊ |
| 11 | * unlawful or unlicensed copies of an Apple operating system, or to␊ |
| 12 | * circumvent, violate, or enable the circumvention or violation of, any␊ |
| 13 | * terms of an Apple operating system software license agreement.␊ |
| 14 | * ␊ |
| 15 | * Please obtain a copy of the License at␊ |
| 16 | * http://www.opensource.apple.com/apsl/ and read it before using this file.␊ |
| 17 | * ␊ |
| 18 | * The Original Code and all software distributed under the License are␊ |
| 19 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER␊ |
| 20 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,␊ |
| 21 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,␊ |
| 22 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.␊ |
| 23 | * Please see the License for the specific language governing rights and␊ |
| 24 | * limitations under the License.␊ |
| 25 | * ␊ |
| 26 | * @APPLE_OSREFERENCE_LICENSE_HEADER_END@␊ |
| 27 | */␊ |
| 28 | /*␊ |
| 29 | * Copyright (c) 1993 Daniel Boulet␊ |
| 30 | * Copyright (c) 1994 Ugen J.S.Antsilevich␊ |
| 31 | *␊ |
| 32 | * Redistribution and use in source forms, with and without modification,␊ |
| 33 | * are permitted provided that this entire comment appears intact.␊ |
| 34 | *␊ |
| 35 | * Redistribution in binary form may occur without any restrictions.␊ |
| 36 | * Obviously, it would be nice if you gave credit where credit is due␊ |
| 37 | * but requiring it would be too onerous.␊ |
| 38 | *␊ |
| 39 | * This software is provided ``AS IS'' without any warranties of any kind.␊ |
| 40 | *␊ |
| 41 | */␊ |
| 42 | ␊ |
| 43 | #ifndef _IP_FW_H␊ |
| 44 | #define _IP_FW_H␊ |
| 45 | ␊ |
| 46 | #include <sys/appleapiopts.h>␊ |
| 47 | ␊ |
| 48 | #ifdef IPFW2␊ |
| 49 | #include <netinet/ip_fw2.h>␊ |
| 50 | #else /* !IPFW2, good old ipfw */␊ |
| 51 | ␊ |
| 52 | #include <sys/queue.h>␊ |
| 53 | #include <sys/types.h>␉␉/* u_ types */␊ |
| 54 | ␊ |
| 55 | #define IP_FW_CURRENT_API_VERSION 20␉/* Version of this API */␊ |
| 56 | ␊ |
| 57 | ␊ |
| 58 | /*␊ |
| 59 | * This union structure identifies an interface, either explicitly␊ |
| 60 | * by name or implicitly by IP address. The flags IP_FW_F_IIFNAME␊ |
| 61 | * and IP_FW_F_OIFNAME say how to interpret this structure. An␊ |
| 62 | * interface unit number of -1 matches any unit number, while an␊ |
| 63 | * IP address of 0.0.0.0 indicates matches any interface.␊ |
| 64 | *␊ |
| 65 | * The receive and transmit interfaces are only compared against the␊ |
| 66 | * the packet if the corresponding bit (IP_FW_F_IIFACE or IP_FW_F_OIFACE)␊ |
| 67 | * is set. Note some packets lack a receive or transmit interface␊ |
| 68 | * (in which case the missing "interface" never matches).␊ |
| 69 | */␊ |
| 70 | ␊ |
| 71 | union ip_fw_if {␊ |
| 72 | struct in_addr fu_via_ip;␉/* Specified by IP address */␊ |
| 73 | struct {␉␉␉/* Specified by interface name */␊ |
| 74 | #define FW_IFNLEN 10 /* need room ! was IFNAMSIZ */␊ |
| 75 | ␉ char name[FW_IFNLEN];␊ |
| 76 | ␉ short unit;␉␉/* -1 means match any unit */␊ |
| 77 | } fu_via_if;␊ |
| 78 | };␊ |
| 79 | ␊ |
| 80 | /*␊ |
| 81 | * Format of an IP firewall descriptor␊ |
| 82 | *␊ |
| 83 | * fw_src, fw_dst, fw_smsk, fw_dmsk are always stored in network byte order.␊ |
| 84 | * fw_flg and fw_n*p are stored in host byte order (of course).␊ |
| 85 | * Port numbers are stored in HOST byte order.␊ |
| 86 | */␊ |
| 87 | ␊ |
| 88 | struct ip_fw {␊ |
| 89 | ␉u_int32_t version;␉␉/* Version of this structure. Should always be */␊ |
| 90 | ␉␉␉␉␉␉␉/* set to IP_FW_CURRENT_API_VERSION by clients. */␊ |
| 91 | ␉void *context;␉␉␉/* Context that is usable by user processes to */␊ |
| 92 | ␉␉␉␉␉␉␉/* identify this rule. */␊ |
| 93 | u_int64_t fw_pcnt,fw_bcnt;␉␉/* Packet and byte counters */␊ |
| 94 | struct in_addr fw_src, fw_dst;␉/* Source and destination IP addr */␊ |
| 95 | struct in_addr fw_smsk, fw_dmsk;␉/* Mask for src and dest IP addr */␊ |
| 96 | u_short fw_number;␉␉␉/* Rule number */␊ |
| 97 | u_int fw_flg;␉␉␉/* Flags word */␊ |
| 98 | #define IP_FW_MAX_PORTS␉10␉␉/* A reasonable maximum */␊ |
| 99 | ␉union {␊ |
| 100 | ␉u_short fw_pts[IP_FW_MAX_PORTS];␉/* Array of port numbers to match */␊ |
| 101 | #define IP_FW_ICMPTYPES_MAX␉128␊ |
| 102 | #define IP_FW_ICMPTYPES_DIM␉(IP_FW_ICMPTYPES_MAX / (sizeof(unsigned) * 8))␊ |
| 103 | ␉unsigned fw_icmptypes[IP_FW_ICMPTYPES_DIM]; /* ICMP types bitmap */␊ |
| 104 | ␉} fw_uar;␊ |
| 105 | u_int fw_ipflg;␉␉␉/* IP flags word */␊ |
| 106 | u_char fw_ipopt,fw_ipnopt;␉␉/* IP options set/unset */␊ |
| 107 | u_char fw_tcpopt,fw_tcpnopt;␉/* TCP options set/unset */␊ |
| 108 | u_char fw_tcpf,fw_tcpnf;␉␉/* TCP flags set/unset */␊ |
| 109 | long timestamp;␉␉␉/* timestamp (tv_sec) of last match */␊ |
| 110 | union ip_fw_if fw_in_if, fw_out_if;␉/* Incoming and outgoing interfaces */␊ |
| 111 | union {␊ |
| 112 | ␉u_short fu_divert_port;␉␉/* Divert/tee port (options IPDIVERT) */␊ |
| 113 | ␉u_short fu_pipe_nr;␉␉/* queue number (option DUMMYNET) */␊ |
| 114 | ␉u_short fu_skipto_rule;␉␉/* SKIPTO command rule number */␊ |
| 115 | ␉u_short fu_reject_code;␉␉/* REJECT response code */␊ |
| 116 | ␉struct sockaddr_in fu_fwd_ip;␊ |
| 117 | } fw_un;␊ |
| 118 | u_char fw_prot;␉␉␉/* IP protocol */␊ |
| 119 | ␉/*␊ |
| 120 | ␉ * N'of src ports and # of dst ports in ports array (dst ports␊ |
| 121 | ␉ * follow src ports; max of 10 ports in all; count of 0 means␊ |
| 122 | ␉ * match all ports)␊ |
| 123 | ␉ */␊ |
| 124 | u_char fw_nports;␊ |
| 125 | void *pipe_ptr; /* flow_set ptr for dummynet pipe */␊ |
| 126 | void *next_rule_ptr ; /* next rule in case of match */␊ |
| 127 | uid_t fw_uid;␉␉␉/* uid to match */␊ |
| 128 | int fw_logamount;␉␉␉/* amount to log */␊ |
| 129 | u_int64_t fw_loghighest;␉␉/* highest number packet to log */␊ |
| 130 | };␊ |
| 131 | ␊ |
| 132 | /*␊ |
| 133 | * extended ipfw structure... some fields in the original struct␊ |
| 134 | * can be used to pass parameters up/down, namely pointers␊ |
| 135 | * void *pipe_ptr␊ |
| 136 | * void *next_rule_ptr ␊ |
| 137 | * some others can be used to pass parameters down, namely counters etc.␊ |
| 138 | * u_int64_t fw_pcnt,fw_bcnt;␊ |
| 139 | * long timestamp;␊ |
| 140 | */␊ |
| 141 | ␊ |
| 142 | struct ip_fw_ext { /* extended structure */␊ |
| 143 | struct ip_fw rule; /* must be at offset 0 */␊ |
| 144 | long dont_match_prob; /* 0x7fffffff means 1.0, always fail */␊ |
| 145 | u_int dyn_type; /* type for dynamic rule */␊ |
| 146 | };␊ |
| 147 | ␊ |
| 148 | #define IP_FW_GETNSRCP(rule)␉␉((rule)->fw_nports & 0x0f)␊ |
| 149 | #define IP_FW_SETNSRCP(rule, n)␉␉do {␉␉␉␉\␊ |
| 150 | ␉␉␉␉␉ (rule)->fw_nports &= ~0x0f;␉\␊ |
| 151 | ␉␉␉␉␉ (rule)->fw_nports |= (n);␉\␊ |
| 152 | ␉␉␉␉␉} while (0)␊ |
| 153 | #define IP_FW_GETNDSTP(rule)␉␉((rule)->fw_nports >> 4)␊ |
| 154 | #define IP_FW_SETNDSTP(rule, n)␉␉do {␉␉␉␉\␊ |
| 155 | ␉␉␉␉␉ (rule)->fw_nports &= ~0xf0;␉\␊ |
| 156 | ␉␉␉␉␉ (rule)->fw_nports |= (n) << 4;\␊ |
| 157 | ␉␉␉␉␉} while (0)␊ |
| 158 | ␊ |
| 159 | #define fw_divert_port␉fw_un.fu_divert_port␊ |
| 160 | #define fw_skipto_rule␉fw_un.fu_skipto_rule␊ |
| 161 | #define fw_reject_code␉fw_un.fu_reject_code␊ |
| 162 | #define fw_pipe_nr␉fw_un.fu_pipe_nr␊ |
| 163 | #define fw_fwd_ip␉fw_un.fu_fwd_ip␊ |
| 164 | ␊ |
| 165 | struct ip_fw_chain {␊ |
| 166 | ␉LIST_ENTRY(ip_fw_chain) next;␊ |
| 167 | ␉struct ip_fw *rule;␊ |
| 168 | };␊ |
| 169 | ␊ |
| 170 | /*␊ |
| 171 | * Flow mask/flow id for each queue.␊ |
| 172 | */␊ |
| 173 | struct ipfw_flow_id {␊ |
| 174 | u_int32_t dst_ip, src_ip ;␊ |
| 175 | u_int16_t dst_port, src_port ; ␊ |
| 176 | u_int8_t proto ; ␊ |
| 177 | u_int8_t flags ; /* protocol-specific flags */␊ |
| 178 | } ;␊ |
| 179 | ␊ |
| 180 | /*␊ |
| 181 | * dynamic ipfw rule␊ |
| 182 | */␊ |
| 183 | struct ipfw_dyn_rule {␊ |
| 184 | struct ipfw_dyn_rule *next ;␊ |
| 185 | ␊ |
| 186 | struct ipfw_flow_id id ;␊ |
| 187 | struct ipfw_flow_id mask ;␊ |
| 188 | struct ip_fw_chain *chain ;␉␉/* pointer to parent rule␉*/␊ |
| 189 | u_int32_t type ;␉␉␉/* rule type␉␉␉*/␊ |
| 190 | u_int32_t expire ;␉␉␉/* expire time␉␉␉*/␊ |
| 191 | u_int64_t pcnt, bcnt;␉␉/* match counters␉␉*/␊ |
| 192 | u_int32_t bucket ;␉␉␉/* which bucket in hash table␉*/␊ |
| 193 | u_int32_t state ;␉␉␉/* state of this rule (typ. a */␊ |
| 194 | ␉␉␉␉␉/* combination of TCP flags)␉*/␊ |
| 195 | } ;␊ |
| 196 | ␊ |
| 197 | /*␊ |
| 198 | * Values for "flags" field .␊ |
| 199 | */␊ |
| 200 | #define IP_FW_F_COMMAND 0x000000ff␉/* Mask for type of chain entry:␉*/␊ |
| 201 | #define IP_FW_F_DENY␉0x00000000␉/* This is a deny rule␉␉␉*/␊ |
| 202 | #define IP_FW_F_REJECT␉0x00000001␉/* Deny and send a response packet␉*/␊ |
| 203 | #define IP_FW_F_ACCEPT␉0x00000002␉/* This is an accept rule␉␉*/␊ |
| 204 | #define IP_FW_F_COUNT␉0x00000003␉/* This is a count rule␉␉␉*/␊ |
| 205 | #define IP_FW_F_DIVERT␉0x00000004␉/* This is a divert rule␉␉*/␊ |
| 206 | #define IP_FW_F_TEE␉0x00000005␉/* This is a tee rule␉␉␉*/␊ |
| 207 | #define IP_FW_F_SKIPTO␉0x00000006␉/* This is a skipto rule␉␉*/␊ |
| 208 | #define IP_FW_F_FWD␉0x00000007␉/* This is a "change forwarding address" rule */␊ |
| 209 | #define IP_FW_F_PIPE␉0x00000008␉/* This is a dummynet rule */␊ |
| 210 | #define IP_FW_F_QUEUE␉0x00000009␉/* This is a dummynet queue */␊ |
| 211 | ␊ |
| 212 | #define IP_FW_F_IN␉0x00000100␉/* Check inbound packets␉␉*/␊ |
| 213 | #define IP_FW_F_OUT␉0x00000200␉/* Check outbound packets␉␉*/␊ |
| 214 | #define IP_FW_F_IIFACE␉0x00000400␉/* Apply inbound interface test␉␉*/␊ |
| 215 | #define IP_FW_F_OIFACE␉0x00000800␉/* Apply outbound interface test␉*/␊ |
| 216 | ␊ |
| 217 | #define IP_FW_F_PRN␉0x00001000␉/* Print if this rule matches␉␉*/␊ |
| 218 | ␊ |
| 219 | #define IP_FW_F_SRNG␉0x00002000␉/* The first two src ports are a min␉*␊ |
| 220 | ␉␉␉␉␉ * and max range (stored in host byte␉*␊ |
| 221 | ␉␉␉␉␉ * order).␉␉␉␉*/␊ |
| 222 | ␊ |
| 223 | #define IP_FW_F_DRNG␉0x00004000␉/* The first two dst ports are a min␉*␊ |
| 224 | ␉␉␉␉␉ * and max range (stored in host byte␉*␊ |
| 225 | ␉␉␉␉␉ * order).␉␉␉␉*/␊ |
| 226 | ␊ |
| 227 | #define IP_FW_F_FRAG␉0x00008000␉/* Fragment␉␉␉␉*/␊ |
| 228 | ␊ |
| 229 | #define IP_FW_F_IIFNAME␉0x00010000␉/* In interface by name/unit (not IP)␉*/␊ |
| 230 | #define IP_FW_F_OIFNAME␉0x00020000␉/* Out interface by name/unit (not IP)␉*/␊ |
| 231 | ␊ |
| 232 | #define IP_FW_F_INVSRC␉0x00040000␉/* Invert sense of src check␉␉*/␊ |
| 233 | #define IP_FW_F_INVDST␉0x00080000␉/* Invert sense of dst check␉␉*/␊ |
| 234 | ␊ |
| 235 | #define IP_FW_F_ICMPBIT 0x00100000␉/* ICMP type bitmap is valid␉␉*/␊ |
| 236 | ␊ |
| 237 | #define IP_FW_F_UID␉0x00200000␉/* filter by uid␉␉␉*/␊ |
| 238 | ␊ |
| 239 | #define IP_FW_F_RND_MATCH 0x00800000␉/* probabilistic rule match␉␉*/␊ |
| 240 | #define IP_FW_F_SMSK␉0x01000000␉/* src-port + mask ␉␉␉*/␊ |
| 241 | #define IP_FW_F_DMSK␉0x02000000␉/* dst-port + mask ␉␉␉*/␊ |
| 242 | #define␉IP_FW_BRIDGED␉0x04000000␉/* only match bridged packets␉␉*/␊ |
| 243 | #define IP_FW_F_KEEP_S␉0x08000000␉/* keep state␉ ␉␉␉*/␊ |
| 244 | #define IP_FW_F_CHECK_S␉0x10000000␉/* check state␉ ␉␉␉*/␊ |
| 245 | ␊ |
| 246 | #define IP_FW_F_SME␉0x20000000␉/* source = me␉␉␉␉*/␊ |
| 247 | #define IP_FW_F_DME␉0x40000000␉/* destination = me␉␉␉*/␊ |
| 248 | ␊ |
| 249 | #define IP_FW_F_MASK␉0x7FFFFFFF␉/* All possible flag bits mask␉␉*/␊ |
| 250 | ␊ |
| 251 | /*␊ |
| 252 | * Flags for the 'fw_ipflg' field, for comparing values of ip and its protocols.␊ |
| 253 | */␊ |
| 254 | #define␉IP_FW_IF_TCPEST␉0x00000020␉/* established TCP connection */␊ |
| 255 | #define␉IP_FW_IF_TCPMSK␉0x00000020␉/* mask of all TCP values */␊ |
| 256 | ␊ |
| 257 | /*␊ |
| 258 | * For backwards compatibility with rules specifying "via iface" but␊ |
| 259 | * not restricted to only "in" or "out" packets, we define this combination␊ |
| 260 | * of bits to represent this configuration.␊ |
| 261 | */␊ |
| 262 | ␊ |
| 263 | #define IF_FW_F_VIAHACK␉(IP_FW_F_IN|IP_FW_F_OUT|IP_FW_F_IIFACE|IP_FW_F_OIFACE)␊ |
| 264 | ␊ |
| 265 | /*␊ |
| 266 | * Definitions for REJECT response codes.␊ |
| 267 | * Values less than 256 correspond to ICMP unreachable codes.␊ |
| 268 | */␊ |
| 269 | #define IP_FW_REJECT_RST␉0x0100␉␉/* TCP packets: send RST */␊ |
| 270 | ␊ |
| 271 | /*␊ |
| 272 | * Definitions for IP option names.␊ |
| 273 | */␊ |
| 274 | #define IP_FW_IPOPT_LSRR␉0x01␊ |
| 275 | #define IP_FW_IPOPT_SSRR␉0x02␊ |
| 276 | #define IP_FW_IPOPT_RR␉␉0x04␊ |
| 277 | #define IP_FW_IPOPT_TS␉␉0x08␊ |
| 278 | ␊ |
| 279 | /*␊ |
| 280 | * Definitions for TCP option names.␊ |
| 281 | */␊ |
| 282 | #define IP_FW_TCPOPT_MSS␉0x01␊ |
| 283 | #define IP_FW_TCPOPT_WINDOW␉0x02␊ |
| 284 | #define IP_FW_TCPOPT_SACK␉0x04␊ |
| 285 | #define IP_FW_TCPOPT_TS␉␉0x08␊ |
| 286 | #define IP_FW_TCPOPT_CC␉␉0x10␊ |
| 287 | ␊ |
| 288 | /*␊ |
| 289 | * Definitions for TCP flags.␊ |
| 290 | */␊ |
| 291 | #define IP_FW_TCPF_FIN␉␉TH_FIN␊ |
| 292 | #define IP_FW_TCPF_SYN␉␉TH_SYN␊ |
| 293 | #define IP_FW_TCPF_RST␉␉TH_RST␊ |
| 294 | #define IP_FW_TCPF_PSH␉␉TH_PUSH␊ |
| 295 | #define IP_FW_TCPF_ACK␉␉TH_ACK␊ |
| 296 | #define IP_FW_TCPF_URG␉␉TH_URG␊ |
| 297 | ␊ |
| 298 | /*␊ |
| 299 | * Main firewall chains definitions and global var's definitions.␊ |
| 300 | */␊ |
| 301 | ␊ |
| 302 | #endif /* !IPFW2 */␊ |
| 303 | #endif /* _IP_FW_H */␊ |
| 304 | |
