net.h@ 84341

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1	/** @file
2	* IPRT - Network Protocols.
3	*/
4
5	/*
6	* Copyright (C) 2008-2020 Oracle Corporation
7	*
8	* This file is part of VirtualBox Open Source Edition (OSE), as
9	* available from http://www.virtualbox.org. This file is free software;
10	* you can redistribute it and/or modify it under the terms of the GNU
11	* General Public License (GPL) as published by the Free Software
12	* Foundation, in version 2 as it comes in the "COPYING" file of the
13	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
14	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
15	*
16	* The contents of this file may alternatively be used under the terms
17	* of the Common Development and Distribution License Version 1.0
18	* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
19	* VirtualBox OSE distribution, in which case the provisions of the
20	* CDDL are applicable instead of those of the GPL.
21	*
22	* You may elect to license modified versions of this file under the
23	* terms and conditions of either the GPL or the CDDL or both.
24	*/
25
26	#ifndef IPRT_INCLUDED_net_h
27	#define IPRT_INCLUDED_net_h
28	#ifndef RT_WITHOUT_PRAGMA_ONCE
29	# pragma once
30	#endif
31
32	#include <iprt/cdefs.h>
33	#include <iprt/types.h>
34	#include <iprt/assert.h>
35
36
37	RT_C_DECLS_BEGIN
38
39	/** @defgroup grp_rt_net RTNet - Network Protocols
40	* @ingroup grp_rt
41	* @{
42	*/
43
44	/**
45	* Converts an stringified Ethernet MAC address into the RTMAC representation.
46	*
47	* @todo This should be move to some generic part of the runtime.
48	*
49	* @returns VINF_SUCCESS on success, VERR_GETOPT_INVALID_ARGUMENT_FORMAT on
50	* failure.
51	*
52	* @param pszAddr The address string to convert.
53	* @param pMacAddr Where to store the result.
54	*/
55	RTDECL(int) RTNetStrToMacAddr(const char *pszAddr, PRTMAC pMacAddr);
56
57	/**
58	* IPv4 address.
59	*/
60	typedef RTUINT32U RTNETADDRIPV4;
61	AssertCompileSize(RTNETADDRIPV4, 4);
62	/** Pointer to a IPv4 address. */
63	typedef RTNETADDRIPV4 *PRTNETADDRIPV4;
64	/** Pointer to a const IPv4 address. */
65	typedef RTNETADDRIPV4 const *PCRTNETADDRIPV4;
66
67	/**
68	* Tests if the given string is an IPv4 address.
69	*
70	* @returns boolean.
71	* @param pcszAddr String which may be an IPv4 address.
72	*/
73	RTDECL(bool) RTNetIsIPv4AddrStr(const char *pcszAddr);
74
75	/**
76	* Tests if the given string is a wildcard IPv4 address.
77	*
78	* @returns boolean.
79	* @param pcszAddr String which may be an IPv4 address.
80	*/
81	RTDECL(bool) RTNetStrIsIPv4AddrAny(const char *pcszAddr);
82
83	/**
84	* Parses dotted-decimal IPv4 address into RTNETADDRIPV4 representation.
85	*
86	* @returns VINF_SUCCESS on success, VERR_INVALID_PARAMETER on
87	* failure.
88	*
89	* @param pcszAddr The value to convert.
90	* @param ppszNext Where to store the pointer to the first char
91	* following the address. (Optional)
92	* @param pAddr Where to store the result.
93	*/
94	RTDECL(int) RTNetStrToIPv4AddrEx(const char pcszAddr, PRTNETADDRIPV4 pAddr, char *ppszNext);
95
96	/**
97	* Parses dotted-decimal IPv4 address into RTNETADDRIPV4 representation.
98	* Leading and trailing whitespace is ignored.
99	*
100	* @returns VINF_SUCCESS on success, VERR_INVALID_PARAMETER on
101	* failure.
102	*
103	* @param pcszAddr The value to convert.
104	* @param pAddr Where to store the result.
105	*/
106	RTDECL(int) RTNetStrToIPv4Addr(const char *pcszAddr, PRTNETADDRIPV4 pAddr);
107
108	/**
109	* Parses dotted-decimal IPv4 CIDR notation into RTNETADDRIPV4
110	* representation and prefix length. Missing prefix specification is
111	* treated as exact address specification (prefix length 32). Leading
112	* and trailing whitespace is ignored.
113	*
114	* @returns VINF_SUCCESS on success, VERR_INVALID_PARAMETER on
115	* failure.
116	*
117	* @param pcszAddr The value to convert.
118	* @param pAddr Where to store the address.
119	* @param piPrefix Where to store the prefix length;
120	*/
121	RTDECL(int) RTNetStrToIPv4Cidr(const char pcszAddr, PRTNETADDRIPV4 pAddr, int piPrefix);
122
123	/**
124	* Verifies that RTNETADDRIPV4 is a valid contiguous netmask and
125	* computes its prefix length.
126	*
127	* @returns VINF_SUCCESS on success, VERR_INVALID_PARAMETER on
128	* failure.
129	*
130	* @param pMask The netmask to verify and convert.
131	* @param piPrefix Where to store the prefix length. (Optional)
132	*/
133	RTDECL(int) RTNetMaskToPrefixIPv4(PCRTNETADDRIPV4 pMask, int *piPrefix);
134
135	/**
136	* Computes netmask corresponding to the prefix length.
137	*
138	* @returns VINF_SUCCESS on success, VERR_INVALID_PARAMETER on
139	* failure.
140	*
141	* @param iPrefix The prefix to convert.
142	* @param pMask Where to store the netmask.
143	*/
144	RTDECL(int) RTNetPrefixToMaskIPv4(int iPrefix, PRTNETADDRIPV4 pMask);
145
146
147	/**
148	* IPv6 address.
149	*/
150	typedef RTUINT128U RTNETADDRIPV6;
151	AssertCompileSize(RTNETADDRIPV6, 16);
152	/** Pointer to a IPv6 address. */
153	typedef RTNETADDRIPV6 *PRTNETADDRIPV6;
154	/** Pointer to a const IPv6 address. */
155	typedef RTNETADDRIPV6 const *PCRTNETADDRIPV6;
156
157	/**
158	* Tests if the given string is a valid IPv6 address.
159	*
160	* @returns @c true if it is, @c false if not.
161	* @param pszAddress String which may be an IPv6 address.
162	*/
163	RTDECL(bool) RTNetIsIPv6AddrStr(const char *pszAddress);
164
165	/**
166	* Tests if the given string is a wildcard IPv6 address.
167	*
168	* @returns @c true if it is, @c false if not.
169	* @param pszAddress String which may be an IPv6 address.
170	*/
171	RTDECL(bool) RTNetStrIsIPv6AddrAny(const char *pszAddress);
172
173	/**
174	* Parses IPv6 address into RTNETADDRIPV6 representation.
175	*
176	* @returns VINF_SUCCESS on success, VERR_INVALID_PARAMETER on
177	* failure.
178	*
179	* @param pcszAddr The value to convert.
180	* @param ppszNext Where to store the pointer to the first char
181	* following the address. (Optional)
182	* @param pAddr Where to store the result.
183	*/
184	RTDECL(int) RTNetStrToIPv6AddrEx(const char pcszAddr, PRTNETADDRIPV6 pAddr, char *ppszNext);
185
186	/**
187	* Parses IPv6 address into RTNETADDRIPV6 representation.
188	* Leading and trailing whitespace is ignored.
189	*
190	* @returns VINF_SUCCESS on success, VERR_INVALID_PARAMETER on
191	* failure.
192	*
193	* @param pcszAddr The value to convert.
194	* @param ppszZone Where to store the pointer to the first char
195	* of the zone id. NULL is stored if there is
196	* no zone id.
197	* @param pAddr Where to store the result.
198	*/
199	RTDECL(int) RTNetStrToIPv6Addr(const char pcszAddr, PRTNETADDRIPV6 pAddr, char *ppszZone);
200
201	/**
202	* Verifies that RTNETADDRIPV6 is a valid contiguous netmask and
203	* computes its prefix length.
204	*
205	* @returns VINF_SUCCESS on success, VERR_INVALID_PARAMETER on
206	* failure.
207	*
208	* @param pMask The netmask to verify and convert.
209	* @param piPrefix Where to store the prefix length. (Optional)
210	*/
211	RTDECL(int) RTNetMaskToPrefixIPv6(PCRTNETADDRIPV6 pMask, int *piPrefix);
212
213	/**
214	* Computes netmask corresponding to the prefix length.
215	*
216	* @returns VINF_SUCCESS on success, VERR_INVALID_PARAMETER on
217	* failure.
218	*
219	* @param iPrefix The prefix to convert.
220	* @param pMask Where to store the netmask.
221	*/
222	RTDECL(int) RTNetPrefixToMaskIPv6(int iPrefix, PRTNETADDRIPV6 pMask);
223
224
225	/**
226	* IPX address.
227	*/
228	#pragma pack(1)
229	typedef struct RTNETADDRIPX
230	{
231	/** The network ID. */
232	uint32_t Network;
233	/** The node ID. (Defaults to the MAC address apparently.) */
234	RTMAC Node;
235	} RTNETADDRIPX;
236	#pragma pack()
237	AssertCompileSize(RTNETADDRIPX, 4+6);
238	/** Pointer to an IPX address. */
239	typedef RTNETADDRIPX *PRTNETADDRIPX;
240	/** Pointer to a const IPX address. */
241	typedef RTNETADDRIPX const *PCRTNETADDRIPX;
242
243	/**
244	* Network address union.
245	*
246	* @remarks The size of this structure may change in the future.
247	*/
248	typedef union RTNETADDRU
249	{
250	/** 64-bit view. */
251	uint64_t au64[2];
252	/** 32-bit view. */
253	uint32_t au32[4];
254	/** 16-bit view. */
255	uint16_t au16[8];
256	/** 8-bit view. */
257	uint8_t au8[16];
258	/** IPv4 view. */
259	RTNETADDRIPV4 IPv4;
260	#ifndef IPv6 /* Work around X11 and RDP defining IPv6 to 1. */
261	/** IPv6 view. */
262	RTNETADDRIPV6 IPv6;
263	#endif
264	/** IPX view. */
265	RTNETADDRIPX Ipx;
266	/** MAC address view. */
267	RTMAC Mac;
268	} RTNETADDRU;
269	AssertCompileSize(RTNETADDRU, 16);
270	/** Pointer to an address union. */
271	typedef RTNETADDRU *PRTNETADDRU;
272	/** Pointer to a const address union. */
273	typedef RTNETADDRU const *PCRTNETADDRU;
274
275	/**
276	* Network address type.
277	*
278	* @remarks The value assignments may change in the future.
279	*/
280	typedef enum RTNETADDRTYPE
281	{
282	/** The invalid 0 entry. */
283	RTNETADDRTYPE_INVALID = 0,
284	/** IP version 4. */
285	RTNETADDRTYPE_IPV4,
286	/** IP version 6. */
287	RTNETADDRTYPE_IPV6,
288	/** IPX. */
289	RTNETADDRTYPE_IPX,
290	/** MAC address. */
291	RTNETADDRTYPE_MAC,
292	/** The end of the valid values. */
293	RTNETADDRTYPE_END,
294	/** The usual 32-bit hack. */
295	RTNETADDRTYPE_32_BIT_HACK = 0x7fffffff
296	} RTNETADDRTYPE;
297	/** Pointer to a network address type. */
298	typedef RTNETADDRTYPE *PRTNETADDRTYPE;
299	/** Pointer to a const network address type. */
300	typedef RTNETADDRTYPE const *PCRTNETADDRTYPE;
301
302	/**
303	* Network address.
304	*
305	* @remarks The size and type values may change.
306	*/
307	typedef struct RTNETADDR
308	{
309	/** The address union. */
310	RTNETADDRU uAddr;
311	/** Indicates which view of @a u that is valid. */
312	RTNETADDRTYPE enmType;
313	/** The port number for IPv4 and IPv6 addresses. This is set to
314	* RTNETADDR_NA_PORT if not applicable. */
315	uint32_t uPort;
316	} RTNETADDR;
317	/** Pointer to a network address. */
318	typedef RTNETADDR *PRTNETADDR;
319	/** Pointer to a const network address. */
320	typedef RTNETADDR const *PCRTNETADDR;
321
322	/** The not applicable value of RTNETADDR::uPort value use to inid. */
323	#define RTNETADDR_PORT_NA UINT32_MAX
324
325	/**
326	* Ethernet header.
327	*/
328	#pragma pack(1)
329	typedef struct RTNETETHERHDR
330	{
331	RTMAC DstMac;
332	RTMAC SrcMac;
333	/** Ethernet frame type or frame size, depending on the kind of ethernet.
334	* This is big endian on the wire. */
335	uint16_t EtherType;
336	} RTNETETHERHDR;
337	#pragma pack()
338	AssertCompileSize(RTNETETHERHDR, 14);
339	/** Pointer to an ethernet header. */
340	typedef RTNETETHERHDR *PRTNETETHERHDR;
341	/** Pointer to a const ethernet header. */
342	typedef RTNETETHERHDR const *PCRTNETETHERHDR;
343
344	/** @name EtherType (RTNETETHERHDR::EtherType)
345	* @{ */
346	#define RTNET_ETHERTYPE_IPV4 UINT16_C(0x0800)
347	#define RTNET_ETHERTYPE_ARP UINT16_C(0x0806)
348	#define RTNET_ETHERTYPE_IPV6 UINT16_C(0x86dd)
349	#define RTNET_ETHERTYPE_VLAN UINT16_C(0x8100)
350	#define RTNET_ETHERTYPE_IPX_1 UINT16_C(0x8037)
351	#define RTNET_ETHERTYPE_IPX_2 UINT16_C(0x8137)
352	#define RTNET_ETHERTYPE_IPX_3 UINT16_C(0x8138)
353	/** @} */
354
355
356	/**
357	* IPv4 header.
358	* All is bigendian on the wire.
359	*/
360	#pragma pack(1)
361	typedef struct RTNETIPV4
362	{
363	#ifdef RT_BIG_ENDIAN
364	unsigned int ip_v : 4;
365	unsigned int ip_hl : 4;
366	unsigned int ip_tos : 8;
367	unsigned int ip_len : 16;
368	#else
369	/** 00:0 - Header length given as a 32-bit word count. */
370	unsigned int ip_hl : 4;
371	/** 00:4 - Header version. */
372	unsigned int ip_v : 4;
373	/** 01 - Type of service. */
374	unsigned int ip_tos : 8;
375	/** 02 - Total length (header + data). */
376	unsigned int ip_len : 16;
377	#endif
378	/** 04 - Packet idenficiation. */
379	uint16_t ip_id;
380	/** 06 - Offset if fragmented. */
381	uint16_t ip_off;
382	/** 08 - Time to live. */
383	uint8_t ip_ttl;
384	/** 09 - Protocol. */
385	uint8_t ip_p;
386	/** 0a - Header check sum. */
387	uint16_t ip_sum;
388	/** 0c - Source address. */
389	RTNETADDRIPV4 ip_src;
390	/** 10 - Destination address. */
391	RTNETADDRIPV4 ip_dst;
392	/** 14 - Options (optional). */
393	uint32_t ip_options[1];
394	} RTNETIPV4;
395	#pragma pack()
396	AssertCompileSize(RTNETIPV4, 6 * 4);
397	/** Pointer to a IPv4 header. */
398	typedef RTNETIPV4 *PRTNETIPV4;
399	/** Pointer to a const IPv4 header. */
400	typedef RTNETIPV4 const *PCRTNETIPV4;
401
402	/** The minimum IPv4 header length (in bytes).
403	* Up to and including RTNETIPV4::ip_dst. */
404	#define RTNETIPV4_MIN_LEN (20)
405
406
407	/** @name IPv4 Protocol Numbers
408	* @{ */
409	/** IPv4: ICMP */
410	#define RTNETIPV4_PROT_ICMP (1)
411	/** IPv4: TCP */
412	#define RTNETIPV4_PROT_TCP (6)
413	/** IPv4: UDP */
414	#define RTNETIPV4_PROT_UDP (17)
415	/** @} */
416
417	/** @name Common IPv4 Port Assignments
418	* @{
419	*/
420	/** Boostrap Protocol / DHCP) Server. */
421	#define RTNETIPV4_PORT_BOOTPS (67)
422	/** Boostrap Protocol / DHCP) Client. */
423	#define RTNETIPV4_PORT_BOOTPC (68)
424	/** @} */
425
426	/** @name IPv4 Flags
427	* @{ */
428	/** IPv4: Don't fragment */
429	#define RTNETIPV4_FLAGS_DF (0x4000)
430	/** IPv4: More fragments */
431	#define RTNETIPV4_FLAGS_MF (0x2000)
432	/** @} */
433
434	RTDECL(uint16_t) RTNetIPv4HdrChecksum(PCRTNETIPV4 pIpHdr);
435	RTDECL(bool) RTNetIPv4IsHdrValid(PCRTNETIPV4 pIpHdr, size_t cbHdrMax, size_t cbPktMax, bool fChecksum);
436	RTDECL(uint32_t) RTNetIPv4PseudoChecksum(PCRTNETIPV4 pIpHdr);
437	RTDECL(uint32_t) RTNetIPv4PseudoChecksumBits(RTNETADDRIPV4 SrcAddr, RTNETADDRIPV4 DstAddr, uint8_t bProtocol, uint16_t cbPkt);
438	RTDECL(uint32_t) RTNetIPv4AddDataChecksum(void const pvData, size_t cbData, uint32_t u32Sum, bool pfOdd);
439	RTDECL(uint16_t) RTNetIPv4FinalizeChecksum(uint32_t u32Sum);
440
441
442	/**
443	* IPv6 header.
444	* All is bigendian on the wire.
445	*/
446	#pragma pack(1)
447	typedef struct RTNETIPV6
448	{
449	/** Version (4 bits), Traffic Class (8 bits) and Flow Lable (20 bits).
450	* @todo this is probably mislabeled - ip6_flow vs. ip6_vfc, fix later. */
451	uint32_t ip6_vfc;
452	/** 04 - Payload length, including extension headers. */
453	uint16_t ip6_plen;
454	/** 06 - Next header type (RTNETIPV4_PROT_XXX). */
455	uint8_t ip6_nxt;
456	/** 07 - Hop limit. */
457	uint8_t ip6_hlim;
458	/** xx - Source address. */
459	RTNETADDRIPV6 ip6_src;
460	/** xx - Destination address. */
461	RTNETADDRIPV6 ip6_dst;
462	} RTNETIPV6;
463	#pragma pack()
464	AssertCompileSize(RTNETIPV6, 8 + 16 + 16);
465	/** Pointer to a IPv6 header. */
466	typedef RTNETIPV6 *PRTNETIPV6;
467	/** Pointer to a const IPv6 header. */
468	typedef RTNETIPV6 const *PCRTNETIPV6;
469
470	/** The minimum IPv6 header length (in bytes).
471	* Up to and including RTNETIPV6::ip6_dst. */
472	#define RTNETIPV6_MIN_LEN (40)
473	#define RTNETIPV6_ICMPV6_ND_WITH_LLA_OPT_MIN_LEN (32)
474
475	RTDECL(uint32_t) RTNetIPv6PseudoChecksum(PCRTNETIPV6 pIpHdr);
476	RTDECL(uint32_t) RTNetIPv6PseudoChecksumEx(PCRTNETIPV6 pIpHdr, uint8_t bProtocol, uint16_t cbPkt);
477	RTDECL(uint32_t) RTNetIPv6PseudoChecksumBits(PCRTNETADDRIPV6 pSrcAddr, PCRTNETADDRIPV6 pDstAddr,
478	uint8_t bProtocol, uint16_t cbPkt);
479
480
481	/**
482	* UDP header.
483	*/
484	#pragma pack(1)
485	typedef struct RTNETUDP
486	{
487	/** The source port. */
488	uint16_t uh_sport;
489	/** The destination port. */
490	uint16_t uh_dport;
491	/** The length of the UDP header and associated data. */
492	uint16_t uh_ulen;
493	/** The checksum of the pseudo header, the UDP header and the data. */
494	uint16_t uh_sum;
495	} RTNETUDP;
496	#pragma pack()
497	AssertCompileSize(RTNETUDP, 8);
498	/** Pointer to an UDP header. */
499	typedef RTNETUDP *PRTNETUDP;
500	/** Pointer to a const UDP header. */
501	typedef RTNETUDP const *PCRTNETUDP;
502
503	/** The minimum UDP packet length (in bytes). (RTNETUDP::uh_ulen) */
504	#define RTNETUDP_MIN_LEN (8)
505
506	RTDECL(uint16_t) RTNetUDPChecksum(uint32_t u32Sum, PCRTNETUDP pUdpHdr);
507	RTDECL(uint32_t) RTNetIPv4AddUDPChecksum(PCRTNETUDP pUdpHdr, uint32_t u32Sum);
508	RTDECL(uint16_t) RTNetIPv4UDPChecksum(PCRTNETIPV4 pIpHdr, PCRTNETUDP pUdpHdr, void const *pvData);
509	RTDECL(bool) RTNetIPv4IsUDPSizeValid(PCRTNETIPV4 pIpHdr, PCRTNETUDP pUdpHdr, size_t cbPktMax);
510	RTDECL(bool) RTNetIPv4IsUDPValid(PCRTNETIPV4 pIpHdr, PCRTNETUDP pUdpHdr, void const *pvData, size_t cbPktMax, bool fChecksum);
511
512
513	/**
514	* IPv4 BOOTP / DHCP packet.
515	*/
516	#pragma pack(1)
517	typedef struct RTNETBOOTP
518	{
519	/** 00 - The packet opcode (RTNETBOOTP_OP_). /
520	uint8_t bp_op;
521	/** 01 - Hardware address type. Same as RTNETARPHDR::ar_htype. */
522	uint8_t bp_htype;
523	/** 02 - Hardware address length. */
524	uint8_t bp_hlen;
525	/** 03 - Gateway hops. */
526	uint8_t bp_hops;
527	/** 04 - Transaction ID. */
528	uint32_t bp_xid;
529	/** 08 - Seconds since boot started. */
530	uint16_t bp_secs;
531	/** 0a - Unused (BOOTP) / Flags (DHCP) (RTNET_DHCP_FLAGS_). /
532	uint16_t bp_flags;
533	/** 0c - Client IPv4 address. */
534	RTNETADDRIPV4 bp_ciaddr;
535	/** 10 - Your IPv4 address. */
536	RTNETADDRIPV4 bp_yiaddr;
537	/** 14 - Server IPv4 address. */
538	RTNETADDRIPV4 bp_siaddr;
539	/** 18 - Gateway IPv4 address. */
540	RTNETADDRIPV4 bp_giaddr;
541	/** 1c - Client hardware address. */
542	union
543	{
544	uint8_t au8[16];
545	RTMAC Mac;
546	} bp_chaddr;
547	/** 2c - Server name. */
548	uint8_t bp_sname[64];
549	/** 6c - File name / more DHCP options. */
550	uint8_t bp_file[128];
551	/** ec - Vendor specific area (BOOTP) / Options (DHCP).
552	* @remark This is really 312 bytes in the DHCP version. */
553	union
554	{
555	uint8_t au8[128];
556	struct DHCP
557	{
558	/** ec - The DHCP cookie (RTNET_DHCP_COOKIE). */
559	uint32_t dhcp_cookie;
560	/** f0 - The DHCP options. */
561	uint8_t dhcp_opts[124];
562	} Dhcp;
563	} bp_vend;
564
565	} RTNETBOOTP;
566	#pragma pack()
567	AssertCompileSize(RTNETBOOTP, 0xec + 128);
568	/** Pointer to a BOOTP / DHCP packet. */
569	typedef RTNETBOOTP *PRTNETBOOTP;
570	/** Pointer to a const BOOTP / DHCP packet. */
571	typedef RTNETBOOTP const *PCRTNETBOOTP;
572
573	/** Minimum BOOTP packet length. For quick validation, no standard thing really. */
574	#define RTNETBOOTP_MIN_LEN 0xec
575	/** Minimum DHCP packet length. For quick validation, no standard thing really. */
576	#define RTNETBOOTP_DHCP_MIN_LEN 0xf1
577
578	/** The normal size of the a DHCP packet (i.e. a RTNETBOOTP).
579	* Same as RTNET_DHCP_OPT_SIZE, just expressed differently. */
580	#define RTNET_DHCP_NORMAL_SIZE (0xec + 4 + RTNET_DHCP_OPT_SIZE)
581	/** The normal size of RTNETBOOTP::bp_vend::Dhcp::dhcp_opts. */
582	#define RTNET_DHCP_OPT_SIZE (312 - 4)
583
584	/** @name BOOTP packet opcode values
585	* @{ */
586	#define RTNETBOOTP_OP_REQUEST 1
587	#define RTNETBOOTP_OP_REPLY 2
588	/** @} */
589
590	/** @name DHCP flags (RTNETBOOTP::bp_flags)
591	* @{ */
592	#define RTNET_DHCP_FLAGS_NO_BROADCAST UINT16_C(0x8000) /** @todo check test!!! */
593	/** @} */
594
595	/** The DHCP cookie (network endian). */
596	#define RTNET_DHCP_COOKIE UINT32_C(0x63825363)
597
598	/**
599	* An IPv4 DHCP option header.
600	*/
601	typedef struct RTNETDHCPOPT
602	{
603	/** 00 - The DHCP option. */
604	uint8_t dhcp_opt;
605	/** 01 - The data length (excluding this header). */
606	uint8_t dhcp_len;
607	/* 02 - The option data follows here, optional and of variable length. */
608	} RTNETDHCPOPT;
609	AssertCompileSize(RTNETDHCPOPT, 2);
610	/** Pointer to a DHCP option header. */
611	typedef RTNETDHCPOPT *PRTNETDHCPOPT;
612	/** Pointer to a const DHCP option header. */
613	typedef RTNETDHCPOPT const *PCRTNETDHCPOPT;
614
615	/** @name DHCP options
616	* @{ */
617	/** 1 byte padding, this has no dhcp_len field. */
618	#define RTNET_DHCP_OPT_PAD 0
619
620	/** The subnet mask. */
621	#define RTNET_DHCP_OPT_SUBNET_MASK 1
622	/** The time offset. */
623	#define RTNET_DHCP_OPT_TIME_OFFSET 2
624	/** The routers for the subnet. */
625	#define RTNET_DHCP_OPT_ROUTERS 3
626	/** Domain Name Server. */
627	#define RTNET_DHCP_OPT_DNS 6
628	/** Host name. */
629	#define RTNET_DHCP_OPT_HOST_NAME 12
630	/** Domain name. */
631	#define RTNET_DHCP_OPT_DOMAIN_NAME 15
632
633	/** The requested address. */
634	#define RTNET_DHCP_OPT_REQ_ADDR 50
635	/** The lease time in seconds. */
636	#define RTNET_DHCP_OPT_LEASE_TIME 51
637	/** Option overload.
638	* Indicates that the bp_file and/or bp_sname holds contains DHCP options. */
639	#define RTNET_DHCP_OPT_OPTION_OVERLOAD 52
640	/** Have a 8-bit message type value as data, see RTNET_DHCP_MT_. /
641	#define RTNET_DHCP_OPT_MSG_TYPE 53
642	/** Server ID. */
643	#define RTNET_DHCP_OPT_SERVER_ID 54
644	/** Parameter request list. */
645	#define RTNET_DHCP_OPT_PARAM_REQ_LIST 55
646	/** The maximum DHCP message size a client is willing to accept. */
647	#define RTNET_DHCP_OPT_MAX_DHCP_MSG_SIZE 57
648	/** Client ID. */
649	#define RTNET_DHCP_OPT_CLIENT_ID 61
650	/** TFTP server name. */
651	#define RTNET_DHCP_OPT_TFTP_SERVER_NAME 66
652	/** Bootfile name. */
653	#define RTNET_DHCP_OPT_BOOTFILE_NAME 67
654
655	/** Marks the end of the DHCP options, this has no dhcp_len field. */
656	#define RTNET_DHCP_OPT_END 255
657	/** @} */
658
659	/** @name DHCP Option overload flags (option 52)
660	* @{ */
661	#define RTNET_DHCP_OPTION_OVERLOAD_FILE 1
662	#define RTNET_DHCP_OPTION_OVERLOAD_SNAME 2
663	#define RTNET_DHCP_OPTION_OVERLOAD_MASK 3
664	/** @} */
665
666	/** @name DHCP Message Types (option 53)
667	* @{ */
668	#define RTNET_DHCP_MT_DISCOVER 1
669	#define RTNET_DHCP_MT_OFFER 2
670	#define RTNET_DHCP_MT_REQUEST 3
671	#define RTNET_DHCP_MT_DECLINE 4
672	#define RTNET_DHCP_MT_ACK 5
673	#define RTNET_DHCP_MT_NAC 6
674	#define RTNET_DHCP_MT_RELEASE 7
675	#define RTNET_DHCP_MT_INFORM 8
676	/** @} */
677
678	/** @name DHCP Flags
679	* @{ */
680	#define RTNET_DHCP_FLAG_BROADCAST 0x8000
681	/** @} */
682
683	RTDECL(bool) RTNetIPv4IsDHCPValid(PCRTNETUDP pUdpHdr, PCRTNETBOOTP pDhcp, size_t cbDhcp, uint8_t *pMsgType);
684
685
686	/**
687	* IPv4 DHCP packet.
688	* @deprecated Use RTNETBOOTP.
689	*/
690	#pragma pack(1)
691	typedef struct RTNETDHCP
692	{
693	/** 00 - The packet opcode. */
694	uint8_t Op;
695	/** Hardware address type. */
696	uint8_t HType;
697	/** Hardware address length. */
698	uint8_t HLen;
699	uint8_t Hops;
700	uint32_t XID;
701	uint16_t Secs;
702	uint16_t Flags;
703	/** Client IPv4 address. */
704	RTNETADDRIPV4 CIAddr;
705	/** Your IPv4 address. */
706	RTNETADDRIPV4 YIAddr;
707	/** Server IPv4 address. */
708	RTNETADDRIPV4 SIAddr;
709	/** Gateway IPv4 address. */
710	RTNETADDRIPV4 GIAddr;
711	/** Client hardware address. */
712	uint8_t CHAddr[16];
713	/** Server name. */
714	uint8_t SName[64];
715	uint8_t File[128];
716	uint8_t abMagic[4];
717	uint8_t DhcpOpt;
718	uint8_t DhcpLen; /* 1 */
719	uint8_t DhcpReq;
720	uint8_t abOptions[57];
721	} RTNETDHCP;
722	#pragma pack()
723	/** @todo AssertCompileSize(RTNETDHCP, ); */
724	/** Pointer to a DHCP packet. */
725	typedef RTNETDHCP *PRTNETDHCP;
726	/** Pointer to a const DHCP packet. */
727	typedef RTNETDHCP const *PCRTNETDHCP;
728
729
730	/**
731	* TCP packet.
732	*/
733	#pragma pack(1)
734	typedef struct RTNETTCP
735	{
736	/** 00 - The source port. */
737	uint16_t th_sport;
738	/** 02 - The destination port. */
739	uint16_t th_dport;
740	/** 04 - The sequence number. */
741	uint32_t th_seq;
742	/** 08 - The acknowledgement number. */
743	uint32_t th_ack;
744	#ifdef RT_BIG_ENDIAN
745	unsigned int th_win : 16;
746	unsigned int th_flags : 8;
747	unsigned int th_off : 4;
748	unsigned int th_x2 : 4;
749	#else
750	/** 0c:0 - Reserved. */
751	unsigned int th_x2 : 4;
752	/** 0c:4 - The data offset given as a dword count from the start of this header. */
753	unsigned int th_off : 4;
754	/** 0d - flags. */
755	unsigned int th_flags : 8;
756	/** 0e - The window. */
757	unsigned int th_win : 16;
758	#endif
759	/** 10 - The checksum of the pseudo header, the TCP header and the data. */
760	uint16_t th_sum;
761	/** 12 - The urgent pointer. */
762	uint16_t th_urp;
763	/* (options follows here and then the data (aka text).) */
764	} RTNETTCP;
765	#pragma pack()
766	AssertCompileSize(RTNETTCP, 20);
767	/** Pointer to a TCP packet. */
768	typedef RTNETTCP *PRTNETTCP;
769	/** Pointer to a const TCP packet. */
770	typedef RTNETTCP const *PCRTNETTCP;
771
772	/** The minimum TCP header length (in bytes). (RTNETTCP::th_off * 4) */
773	#define RTNETTCP_MIN_LEN (20)
774
775	/** @name TCP flags (RTNETTCP::th_flags)
776	* @{ */
777	#define RTNETTCP_F_FIN 0x01
778	#define RTNETTCP_F_SYN 0x02
779	#define RTNETTCP_F_RST 0x04
780	#define RTNETTCP_F_PSH 0x08
781	#define RTNETTCP_F_ACK 0x10
782	#define RTNETTCP_F_URG 0x20
783	#define RTNETTCP_F_ECE 0x40
784	#define RTNETTCP_F_CWR 0x80
785	/** @} */
786
787	RTDECL(uint16_t) RTNetTCPChecksum(uint32_t u32Sum, PCRTNETTCP pTcpHdr, void const *pvData, size_t cbData);
788	RTDECL(uint32_t) RTNetIPv4AddTCPChecksum(PCRTNETTCP pTcpHdr, uint32_t u32Sum);
789	RTDECL(uint16_t) RTNetIPv4TCPChecksum(PCRTNETIPV4 pIpHdr, PCRTNETTCP pTcpHdr, void const *pvData);
790	RTDECL(bool) RTNetIPv4IsTCPSizeValid(PCRTNETIPV4 pIpHdr, PCRTNETTCP pTcpHdr, size_t cbHdrMax, size_t cbPktMax);
791	RTDECL(bool) RTNetIPv4IsTCPValid(PCRTNETIPV4 pIpHdr, PCRTNETTCP pTcpHdr, size_t cbHdrMax, void const *pvData,
792	size_t cbPktMax, bool fChecksum);
793
794
795	/**
796	* IPv4 ICMP packet header.
797	*/
798	#pragma pack(1)
799	typedef struct RTNETICMPV4HDR
800	{
801	/** 00 - The ICMP message type. */
802	uint8_t icmp_type;
803	/** 01 - Type specific code that further qualifies the message. */
804	uint8_t icmp_code;
805	/** 02 - Checksum of the ICMP message. */
806	uint16_t icmp_cksum;
807	} RTNETICMPV4HDR;
808	#pragma pack()
809	AssertCompileSize(RTNETICMPV4HDR, 4);
810	/** Pointer to an ICMP packet header. */
811	typedef RTNETICMPV4HDR *PRTNETICMPV4HDR;
812	/** Pointer to a const ICMP packet header. */
813	typedef RTNETICMPV4HDR const *PCRTNETICMPV4HDR;
814
815	/** @name ICMP (v4) message types.
816	* @{ */
817	#define RTNETICMPV4_TYPE_ECHO_REPLY 0
818	#define RTNETICMPV4_TYPE_ECHO_REQUEST 8
819	#define RTNETICMPV4_TYPE_TRACEROUTE 30
820	/** @} */
821
822	/**
823	* IPv4 ICMP ECHO Reply & Request packet.
824	*/
825	#pragma pack(1)
826	typedef struct RTNETICMPV4ECHO
827	{
828	/** 00 - The ICMP header. */
829	RTNETICMPV4HDR Hdr;
830	/** 04 - The identifier to help the requestor match up the reply.
831	* Can be 0. Typically fixed value. */
832	uint16_t icmp_id;
833	/** 06 - The sequence number to help the requestor match up the reply.
834	* Can be 0. Typically incrementing between requests. */
835	uint16_t icmp_seq;
836	/** 08 - Variable length data that is to be returned unmodified in the reply. */
837	uint8_t icmp_data[1];
838	} RTNETICMPV4ECHO;
839	#pragma pack()
840	AssertCompileSize(RTNETICMPV4ECHO, 9);
841	/** Pointer to an ICMP ECHO packet. */
842	typedef RTNETICMPV4ECHO *PRTNETICMPV4ECHO;
843	/** Pointer to a const ICMP ECHO packet. */
844	typedef RTNETICMPV4ECHO const *PCRTNETICMPV4ECHO;
845
846	/**
847	* IPv4 ICMP TRACEROUTE packet.
848	* This is an reply to an IP packet with the traceroute option set.
849	*/
850	#pragma pack(1)
851	typedef struct RTNETICMPV4TRACEROUTE
852	{
853	/** 00 - The ICMP header. */
854	RTNETICMPV4HDR Hdr;
855	/** 04 - Identifier copied from the traceroute option's ID number. */
856	uint16_t icmp_id;
857	/** 06 - Unused. (Possibly an icmp_seq?) */
858	uint16_t icmp_void;
859	/** 08 - Outbound hop count. From the IP packet causing this message. */
860	uint16_t icmp_ohc;
861	/** 0a - Return hop count. From the IP packet causing this message. */
862	uint16_t icmp_rhc;
863	/** 0c - Output link speed, 0 if not known. */
864	uint32_t icmp_speed;
865	/** 10 - Output link MTU, 0 if not known. */
866	uint32_t icmp_mtu;
867	} RTNETICMPV4TRACEROUTE;
868	#pragma pack()
869	AssertCompileSize(RTNETICMPV4TRACEROUTE, 20);
870	/** Pointer to an ICMP TRACEROUTE packet. */
871	typedef RTNETICMPV4TRACEROUTE *PRTNETICMPV4TRACEROUTE;
872	/** Pointer to a const ICMP TRACEROUTE packet. */
873	typedef RTNETICMPV4TRACEROUTE const *PCRTNETICMPV4TRACEROUTE;
874
875	/** @todo add more ICMPv4 as needed. */
876
877	/**
878	* IPv4 ICMP union packet.
879	*/
880	typedef union RTNETICMPV4
881	{
882	RTNETICMPV4HDR Hdr;
883	RTNETICMPV4ECHO Echo;
884	RTNETICMPV4TRACEROUTE Traceroute;
885	} RTNETICMPV4;
886	/** Pointer to an ICMP union packet. */
887	typedef RTNETICMPV4 *PRTNETICMPV4;
888	/** Pointer to a const ICMP union packet. */
889	typedef RTNETICMPV4 const *PCRTNETICMPV4;
890
891
892	/**
893	* IPv6 ICMP packet header.
894	*/
895	#pragma pack(1)
896	typedef struct RTNETICMPV6HDR
897	{
898	/** 00 - The ICMPv6 message type. */
899	uint8_t icmp6_type;
900	/** 01 - Type specific code that further qualifies the message. */
901	uint8_t icmp6_code;
902	/** 02 - Checksum of the ICMPv6 message. */
903	uint16_t icmp6_cksum;
904	} RTNETICMPV6HDR;
905	#pragma pack()
906	AssertCompileSize(RTNETICMPV6HDR, 4);
907	/** Pointer to an ICMPv6 packet header. */
908	typedef RTNETICMPV6HDR *PRTNETICMPV6HDR;
909	/** Pointer to a const ICMP packet header. */
910	typedef RTNETICMPV6HDR const *PCRTNETICMPV6HDR;
911
912	#define RTNETIPV6_PROT_ICMPV6 (58)
913
914	/** @name Internet Control Message Protocol version 6 (ICMPv6) message types.
915	* @{ */
916	#define RTNETIPV6_ICMP_TYPE_RS 133
917	#define RTNETIPV6_ICMP_TYPE_RA 134
918	#define RTNETIPV6_ICMP_TYPE_NS 135
919	#define RTNETIPV6_ICMP_TYPE_NA 136
920	#define RTNETIPV6_ICMP_TYPE_RDR 137
921	/** @} */
922
923	/** @name Neighbor Discovery option types
924	* @{ */
925	#define RTNETIPV6_ICMP_ND_SLLA_OPT (1)
926	#define RTNETIPV6_ICMP_ND_TLLA_OPT (2)
927	/** @} */
928
929	/** ICMPv6 ND Source/Target Link Layer Address option */
930	#pragma pack(1)
931	typedef struct RTNETNDP_LLA_OPT
932	{
933	uint8_t type;
934	uint8_t len;
935	RTMAC lla;
936	} RTNETNDP_LLA_OPT;
937	#pragma pack()
938
939	AssertCompileSize(RTNETNDP_LLA_OPT, 1+1+6);
940
941	typedef RTNETNDP_LLA_OPT *PRTNETNDP_LLA_OPT;
942	typedef RTNETNDP_LLA_OPT const *PCRTNETNDP_LLA_OPT;
943
944	/** ICMPv6 ND Neighbor Sollicitation */
945	#pragma pack(1)
946	typedef struct RTNETNDP
947	{
948	/** 00 - The ICMPv6 header. */
949	RTNETICMPV6HDR Hdr;
950	/** 04 - reserved */
951	uint32_t reserved;
952	/** 08 - target address */
953	RTNETADDRIPV6 target_address;
954	} RTNETNDP;
955	#pragma pack()
956	AssertCompileSize(RTNETNDP, 4+4+16);
957	/** Pointer to a NDP ND packet. */
958	typedef RTNETNDP *PRTNETNDP;
959	/** Pointer to a const NDP NS packet. */
960	typedef RTNETNDP const *PCRTNETNDP;
961
962
963	/**
964	* Ethernet ARP header.
965	*/
966	#pragma pack(1)
967	typedef struct RTNETARPHDR
968	{
969	/** The hardware type. */
970	uint16_t ar_htype;
971	/** The protocol type (ethertype). */
972	uint16_t ar_ptype;
973	/** The hardware address length. */
974	uint8_t ar_hlen;
975	/** The protocol address length. */
976	uint8_t ar_plen;
977	/** The operation. */
978	uint16_t ar_oper;
979	} RTNETARPHDR;
980	#pragma pack()
981	AssertCompileSize(RTNETARPHDR, 8);
982	/** Pointer to an ethernet ARP header. */
983	typedef RTNETARPHDR *PRTNETARPHDR;
984	/** Pointer to a const ethernet ARP header. */
985	typedef RTNETARPHDR const *PCRTNETARPHDR;
986
987	/** ARP hardware type - ethernet. */
988	#define RTNET_ARP_ETHER UINT16_C(1)
989
990	/** @name ARP operations
991	* @{ */
992	#define RTNET_ARPOP_REQUEST UINT16_C(1) /*< Request hardware address given a protocol address (ARP). /
993	#define RTNET_ARPOP_REPLY UINT16_C(2)
994	#define RTNET_ARPOP_REVREQUEST UINT16_C(3) /*< Request protocol address given a hardware address (RARP). /
995	#define RTNET_ARPOP_REVREPLY UINT16_C(4)
996	#define RTNET_ARPOP_INVREQUEST UINT16_C(8) /*< Inverse ARP. /
997	#define RTNET_ARPOP_INVREPLY UINT16_C(9)
998	/** Check if an ARP operation is a request or not. */
999	#define RTNET_ARPOP_IS_REQUEST(Op) ((Op) & 1)
1000	/** Check if an ARP operation is a reply or not. */
1001	#define RTNET_ARPOP_IS_REPLY(Op) (!RTNET_ARPOP_IS_REQUEST(Op))
1002	/** @} */
1003
1004
1005	/**
1006	* Ethernet IPv4 + 6-byte MAC ARP request packet.
1007	*/
1008	#pragma pack(1)
1009	typedef struct RTNETARPIPV4
1010	{
1011	/** ARP header. */
1012	RTNETARPHDR Hdr;
1013	/** The sender hardware address. */
1014	RTMAC ar_sha;
1015	/** The sender protocol address. */
1016	RTNETADDRIPV4 ar_spa;
1017	/** The target hardware address. */
1018	RTMAC ar_tha;
1019	/** The target protocol address. */
1020	RTNETADDRIPV4 ar_tpa;
1021	} RTNETARPIPV4;
1022	#pragma pack()
1023	AssertCompileSize(RTNETARPIPV4, 8+6+4+6+4);
1024	/** Pointer to an ethernet IPv4+MAC ARP request packet. */
1025	typedef RTNETARPIPV4 *PRTNETARPIPV4;
1026	/** Pointer to a const ethernet IPv4+MAC ARP request packet. */
1027	typedef RTNETARPIPV4 const *PCRTNETARPIPV4;
1028
1029
1030	/** @} */
1031
1032	RT_C_DECLS_END
1033
1034	#endif /* !IPRT_INCLUDED_net_h */
1035

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