1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
|
/** @file
* IPRT - Network Protocols.
*/
/*
* Copyright (C) 2008-2019 Oracle Corporation
*
* This file is part of VirtualBox Open Source Edition (OSE), as
* available from http://www.virtualbox.org. This file is free software;
* you can redistribute it and/or modify it under the terms of the GNU
* General Public License (GPL) as published by the Free Software
* Foundation, in version 2 as it comes in the "COPYING" file of the
* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
*
* The contents of this file may alternatively be used under the terms
* of the Common Development and Distribution License Version 1.0
* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
* VirtualBox OSE distribution, in which case the provisions of the
* CDDL are applicable instead of those of the GPL.
*
* You may elect to license modified versions of this file under the
* terms and conditions of either the GPL or the CDDL or both.
*/
#ifndef IPRT_INCLUDED_net_h
#define IPRT_INCLUDED_net_h
#ifndef RT_WITHOUT_PRAGMA_ONCE
# pragma once
#endif
#include <iprt/cdefs.h>
#include <iprt/types.h>
#include <iprt/assert.h>
RT_C_DECLS_BEGIN
/** @defgroup grp_rt_net RTNet - Network Protocols
* @ingroup grp_rt
* @{
*/
/**
* Converts an stringified Ethernet MAC address into the RTMAC representation.
*
* @todo This should be move to some generic part of the runtime.
*
* @returns VINF_SUCCESS on success, VERR_GETOPT_INVALID_ARGUMENT_FORMAT on
* failure.
*
* @param pszAddr The address string to convert.
* @param pMacAddr Where to store the result.
*/
RTDECL(int) RTNetStrToMacAddr(const char *pszAddr, PRTMAC pMacAddr);
/**
* IPv4 address.
*/
typedef RTUINT32U RTNETADDRIPV4;
AssertCompileSize(RTNETADDRIPV4, 4);
/** Pointer to a IPv4 address. */
typedef RTNETADDRIPV4 *PRTNETADDRIPV4;
/** Pointer to a const IPv4 address. */
typedef RTNETADDRIPV4 const *PCRTNETADDRIPV4;
/**
* Tests if the given string is an IPv4 address.
*
* @returns boolean.
* @param pcszAddr String which may be an IPv4 address.
*/
RTDECL(bool) RTNetIsIPv4AddrStr(const char *pcszAddr);
/**
* Tests if the given string is a wildcard IPv4 address.
*
* @returns boolean.
* @param pcszAddr String which may be an IPv4 address.
*/
RTDECL(bool) RTNetStrIsIPv4AddrAny(const char *pcszAddr);
/**
* Parses dotted-decimal IPv4 address into RTNETADDRIPV4 representation.
*
* @returns VINF_SUCCESS on success, VERR_INVALID_PARAMETER on
* failure.
*
* @param pcszAddr The value to convert.
* @param ppszNext Where to store the pointer to the first char
* following the address. (Optional)
* @param pAddr Where to store the result.
*/
RTDECL(int) RTNetStrToIPv4AddrEx(const char *pcszAddr, PRTNETADDRIPV4 pAddr, char **ppszNext);
/**
* Parses dotted-decimal IPv4 address into RTNETADDRIPV4 representation.
* Leading and trailing whitespace is ignored.
*
* @returns VINF_SUCCESS on success, VERR_INVALID_PARAMETER on
* failure.
*
* @param pcszAddr The value to convert.
* @param pAddr Where to store the result.
*/
RTDECL(int) RTNetStrToIPv4Addr(const char *pcszAddr, PRTNETADDRIPV4 pAddr);
/**
* Parses dotted-decimal IPv4 CIDR notation into RTNETADDRIPV4
* representation and prefix length. Missing prefix specification is
* treated as exact address specification (prefix length 32). Leading
* and trailing whitespace is ignored.
*
* @returns VINF_SUCCESS on success, VERR_INVALID_PARAMETER on
* failure.
*
* @param pcszAddr The value to convert.
* @param pAddr Where to store the address.
* @param piPrefix Where to store the prefix length;
*/
RTDECL(int) RTNetStrToIPv4Cidr(const char *pcszAddr, PRTNETADDRIPV4 pAddr, int *piPrefix);
/**
* Verifies that RTNETADDRIPV4 is a valid contiguous netmask and
* computes its prefix length.
*
* @returns VINF_SUCCESS on success, VERR_INVALID_PARAMETER on
* failure.
*
* @param pMask The netmask to verify and convert.
* @param piPrefix Where to store the prefix length. (Optional)
*/
RTDECL(int) RTNetMaskToPrefixIPv4(PCRTNETADDRIPV4 pMask, int *piPrefix);
/**
* Computes netmask corresponding to the prefix length.
*
* @returns VINF_SUCCESS on success, VERR_INVALID_PARAMETER on
* failure.
*
* @param iPrefix The prefix to convert.
* @param pMask Where to store the netmask.
*/
RTDECL(int) RTNetPrefixToMaskIPv4(int iPrefix, PRTNETADDRIPV4 pMask);
/**
* IPv6 address.
*/
typedef RTUINT128U RTNETADDRIPV6;
AssertCompileSize(RTNETADDRIPV6, 16);
/** Pointer to a IPv6 address. */
typedef RTNETADDRIPV6 *PRTNETADDRIPV6;
/** Pointer to a const IPv6 address. */
typedef RTNETADDRIPV6 const *PCRTNETADDRIPV6;
/**
* Tests if the given string is a valid IPv6 address.
*
* @returns @c true if it is, @c false if not.
* @param pszAddress String which may be an IPv6 address.
*/
RTDECL(bool) RTNetIsIPv6AddrStr(const char *pszAddress);
/**
* Tests if the given string is a wildcard IPv6 address.
*
* @returns @c true if it is, @c false if not.
* @param pszAddress String which may be an IPv6 address.
*/
RTDECL(bool) RTNetStrIsIPv6AddrAny(const char *pszAddress);
/**
* Parses IPv6 address into RTNETADDRIPV6 representation.
*
* @returns VINF_SUCCESS on success, VERR_INVALID_PARAMETER on
* failure.
*
* @param pcszAddr The value to convert.
* @param ppszNext Where to store the pointer to the first char
* following the address. (Optional)
* @param pAddr Where to store the result.
*/
RTDECL(int) RTNetStrToIPv6AddrEx(const char *pcszAddr, PRTNETADDRIPV6 pAddr, char **ppszNext);
/**
* Parses IPv6 address into RTNETADDRIPV6 representation.
* Leading and trailing whitespace is ignored.
*
* @returns VINF_SUCCESS on success, VERR_INVALID_PARAMETER on
* failure.
*
* @param pcszAddr The value to convert.
* @param ppszZone Where to store the pointer to the first char
* of the zone id. NULL is stored if there is
* no zone id.
* @param pAddr Where to store the result.
*/
RTDECL(int) RTNetStrToIPv6Addr(const char *pcszAddr, PRTNETADDRIPV6 pAddr, char **ppszZone);
/**
* Verifies that RTNETADDRIPV6 is a valid contiguous netmask and
* computes its prefix length.
*
* @returns VINF_SUCCESS on success, VERR_INVALID_PARAMETER on
* failure.
*
* @param pMask The netmask to verify and convert.
* @param piPrefix Where to store the prefix length. (Optional)
*/
RTDECL(int) RTNetMaskToPrefixIPv6(PCRTNETADDRIPV6 pMask, int *piPrefix);
/**
* Computes netmask corresponding to the prefix length.
*
* @returns VINF_SUCCESS on success, VERR_INVALID_PARAMETER on
* failure.
*
* @param iPrefix The prefix to convert.
* @param pMask Where to store the netmask.
*/
RTDECL(int) RTNetPrefixToMaskIPv6(int iPrefix, PRTNETADDRIPV6 pMask);
/**
* IPX address.
*/
#pragma pack(1)
typedef struct RTNETADDRIPX
{
/** The network ID. */
uint32_t Network;
/** The node ID. (Defaults to the MAC address apparently.) */
RTMAC Node;
} RTNETADDRIPX;
#pragma pack()
AssertCompileSize(RTNETADDRIPX, 4+6);
/** Pointer to an IPX address. */
typedef RTNETADDRIPX *PRTNETADDRIPX;
/** Pointer to a const IPX address. */
typedef RTNETADDRIPX const *PCRTNETADDRIPX;
/**
* Network address union.
*
* @remarks The size of this structure may change in the future.
*/
typedef union RTNETADDRU
{
/** 64-bit view. */
uint64_t au64[2];
/** 32-bit view. */
uint32_t au32[4];
/** 16-bit view. */
uint16_t au16[8];
/** 8-bit view. */
uint8_t au8[16];
/** IPv4 view. */
RTNETADDRIPV4 IPv4;
#ifndef IPv6 /* Work around X11 and RDP defining IPv6 to 1. */
/** IPv6 view. */
RTNETADDRIPV6 IPv6;
#endif
/** IPX view. */
RTNETADDRIPX Ipx;
/** MAC address view. */
RTMAC Mac;
} RTNETADDRU;
AssertCompileSize(RTNETADDRU, 16);
/** Pointer to an address union. */
typedef RTNETADDRU *PRTNETADDRU;
/** Pointer to a const address union. */
typedef RTNETADDRU const *PCRTNETADDRU;
/**
* Network address type.
*
* @remarks The value assignments may change in the future.
*/
typedef enum RTNETADDRTYPE
{
/** The invalid 0 entry. */
RTNETADDRTYPE_INVALID = 0,
/** IP version 4. */
RTNETADDRTYPE_IPV4,
/** IP version 6. */
RTNETADDRTYPE_IPV6,
/** IPX. */
RTNETADDRTYPE_IPX,
/** MAC address. */
RTNETADDRTYPE_MAC,
/** The end of the valid values. */
RTNETADDRTYPE_END,
/** The usual 32-bit hack. */
RTNETADDRTYPE_32_BIT_HACK = 0x7fffffff
} RTNETADDRTYPE;
/** Pointer to a network address type. */
typedef RTNETADDRTYPE *PRTNETADDRTYPE;
/** Pointer to a const network address type. */
typedef RTNETADDRTYPE const *PCRTNETADDRTYPE;
/**
* Network address.
*
* @remarks The size and type values may change.
*/
typedef struct RTNETADDR
{
/** The address union. */
RTNETADDRU uAddr;
/** Indicates which view of @a u that is valid. */
RTNETADDRTYPE enmType;
/** The port number for IPv4 and IPv6 addresses. This is set to
* RTNETADDR_NA_PORT if not applicable. */
uint32_t uPort;
} RTNETADDR;
/** Pointer to a network address. */
typedef RTNETADDR *PRTNETADDR;
/** Pointer to a const network address. */
typedef RTNETADDR const *PCRTNETADDR;
/** The not applicable value of RTNETADDR::uPort value use to inid. */
#define RTNETADDR_PORT_NA UINT32_MAX
/**
* Ethernet header.
*/
#pragma pack(1)
typedef struct RTNETETHERHDR
{
RTMAC DstMac;
RTMAC SrcMac;
/** Ethernet frame type or frame size, depending on the kind of ethernet.
* This is big endian on the wire. */
uint16_t EtherType;
} RTNETETHERHDR;
#pragma pack()
AssertCompileSize(RTNETETHERHDR, 14);
/** Pointer to an ethernet header. */
typedef RTNETETHERHDR *PRTNETETHERHDR;
/** Pointer to a const ethernet header. */
typedef RTNETETHERHDR const *PCRTNETETHERHDR;
/** @name EtherType (RTNETETHERHDR::EtherType)
* @{ */
#define RTNET_ETHERTYPE_IPV4 UINT16_C(0x0800)
#define RTNET_ETHERTYPE_ARP UINT16_C(0x0806)
#define RTNET_ETHERTYPE_IPV6 UINT16_C(0x86dd)
#define RTNET_ETHERTYPE_VLAN UINT16_C(0x8100)
#define RTNET_ETHERTYPE_IPX_1 UINT16_C(0x8037)
#define RTNET_ETHERTYPE_IPX_2 UINT16_C(0x8137)
#define RTNET_ETHERTYPE_IPX_3 UINT16_C(0x8138)
/** @} */
/**
* IPv4 header.
* All is bigendian on the wire.
*/
#pragma pack(1)
typedef struct RTNETIPV4
{
#ifdef RT_BIG_ENDIAN
unsigned int ip_v : 4;
unsigned int ip_hl : 4;
unsigned int ip_tos : 8;
unsigned int ip_len : 16;
#else
/** 00:0 - Header length given as a 32-bit word count. */
unsigned int ip_hl : 4;
/** 00:4 - Header version. */
unsigned int ip_v : 4;
/** 01 - Type of service. */
unsigned int ip_tos : 8;
/** 02 - Total length (header + data). */
unsigned int ip_len : 16;
#endif
/** 04 - Packet idenficiation. */
uint16_t ip_id;
/** 06 - Offset if fragmented. */
uint16_t ip_off;
/** 08 - Time to live. */
uint8_t ip_ttl;
/** 09 - Protocol. */
uint8_t ip_p;
/** 0a - Header check sum. */
uint16_t ip_sum;
/** 0c - Source address. */
RTNETADDRIPV4 ip_src;
/** 10 - Destination address. */
RTNETADDRIPV4 ip_dst;
/** 14 - Options (optional). */
uint32_t ip_options[1];
} RTNETIPV4;
#pragma pack()
AssertCompileSize(RTNETIPV4, 6 * 4);
/** Pointer to a IPv4 header. */
typedef RTNETIPV4 *PRTNETIPV4;
/** Pointer to a const IPv4 header. */
typedef RTNETIPV4 const *PCRTNETIPV4;
/** The minimum IPv4 header length (in bytes).
* Up to and including RTNETIPV4::ip_dst. */
#define RTNETIPV4_MIN_LEN (20)
/** @name IPv4 Protocol Numbers
* @{ */
/** IPv4: ICMP */
#define RTNETIPV4_PROT_ICMP (1)
/** IPv4: TCP */
#define RTNETIPV4_PROT_TCP (6)
/** IPv4: UDP */
#define RTNETIPV4_PROT_UDP (17)
/** @} */
/** @name Common IPv4 Port Assignments
* @{
*/
/** Boostrap Protocol / DHCP) Server. */
#define RTNETIPV4_PORT_BOOTPS (67)
/** Boostrap Protocol / DHCP) Client. */
#define RTNETIPV4_PORT_BOOTPC (68)
/** @} */
/** @name IPv4 Flags
* @{ */
/** IPv4: Don't fragment */
#define RTNETIPV4_FLAGS_DF (0x4000)
/** IPv4: More fragments */
#define RTNETIPV4_FLAGS_MF (0x2000)
/** @} */
RTDECL(uint16_t) RTNetIPv4HdrChecksum(PCRTNETIPV4 pIpHdr);
RTDECL(bool) RTNetIPv4IsHdrValid(PCRTNETIPV4 pIpHdr, size_t cbHdrMax, size_t cbPktMax, bool fChecksum);
RTDECL(uint32_t) RTNetIPv4PseudoChecksum(PCRTNETIPV4 pIpHdr);
RTDECL(uint32_t) RTNetIPv4PseudoChecksumBits(RTNETADDRIPV4 SrcAddr, RTNETADDRIPV4 DstAddr, uint8_t bProtocol, uint16_t cbPkt);
RTDECL(uint32_t) RTNetIPv4AddDataChecksum(void const *pvData, size_t cbData, uint32_t u32Sum, bool *pfOdd);
RTDECL(uint16_t) RTNetIPv4FinalizeChecksum(uint32_t u32Sum);
/**
* IPv6 header.
* All is bigendian on the wire.
*/
#pragma pack(1)
typedef struct RTNETIPV6
{
/** Version (4 bits), Traffic Class (8 bits) and Flow Lable (20 bits).
* @todo this is probably mislabeled - ip6_flow vs. ip6_vfc, fix later. */
uint32_t ip6_vfc;
/** 04 - Payload length, including extension headers. */
uint16_t ip6_plen;
/** 06 - Next header type (RTNETIPV4_PROT_XXX). */
uint8_t ip6_nxt;
/** 07 - Hop limit. */
uint8_t ip6_hlim;
/** xx - Source address. */
RTNETADDRIPV6 ip6_src;
/** xx - Destination address. */
RTNETADDRIPV6 ip6_dst;
} RTNETIPV6;
#pragma pack()
AssertCompileSize(RTNETIPV6, 8 + 16 + 16);
/** Pointer to a IPv6 header. */
typedef RTNETIPV6 *PRTNETIPV6;
/** Pointer to a const IPv6 header. */
typedef RTNETIPV6 const *PCRTNETIPV6;
/** The minimum IPv6 header length (in bytes).
* Up to and including RTNETIPV6::ip6_dst. */
#define RTNETIPV6_MIN_LEN (40)
#define RTNETIPV6_ICMPV6_ND_WITH_LLA_OPT_MIN_LEN (32)
RTDECL(uint32_t) RTNetIPv6PseudoChecksum(PCRTNETIPV6 pIpHdr);
RTDECL(uint32_t) RTNetIPv6PseudoChecksumEx(PCRTNETIPV6 pIpHdr, uint8_t bProtocol, uint16_t cbPkt);
RTDECL(uint32_t) RTNetIPv6PseudoChecksumBits(PCRTNETADDRIPV6 pSrcAddr, PCRTNETADDRIPV6 pDstAddr,
uint8_t bProtocol, uint16_t cbPkt);
/**
* UDP header.
*/
#pragma pack(1)
typedef struct RTNETUDP
{
/** The source port. */
uint16_t uh_sport;
/** The destination port. */
uint16_t uh_dport;
/** The length of the UDP header and associated data. */
uint16_t uh_ulen;
/** The checksum of the pseudo header, the UDP header and the data. */
uint16_t uh_sum;
} RTNETUDP;
#pragma pack()
AssertCompileSize(RTNETUDP, 8);
/** Pointer to an UDP header. */
typedef RTNETUDP *PRTNETUDP;
/** Pointer to a const UDP header. */
typedef RTNETUDP const *PCRTNETUDP;
/** The minimum UDP packet length (in bytes). (RTNETUDP::uh_ulen) */
#define RTNETUDP_MIN_LEN (8)
RTDECL(uint16_t) RTNetUDPChecksum(uint32_t u32Sum, PCRTNETUDP pUdpHdr);
RTDECL(uint32_t) RTNetIPv4AddUDPChecksum(PCRTNETUDP pUdpHdr, uint32_t u32Sum);
RTDECL(uint16_t) RTNetIPv4UDPChecksum(PCRTNETIPV4 pIpHdr, PCRTNETUDP pUdpHdr, void const *pvData);
RTDECL(bool) RTNetIPv4IsUDPSizeValid(PCRTNETIPV4 pIpHdr, PCRTNETUDP pUdpHdr, size_t cbPktMax);
RTDECL(bool) RTNetIPv4IsUDPValid(PCRTNETIPV4 pIpHdr, PCRTNETUDP pUdpHdr, void const *pvData, size_t cbPktMax, bool fChecksum);
/**
* IPv4 BOOTP / DHCP packet.
*/
#pragma pack(1)
typedef struct RTNETBOOTP
{
/** 00 - The packet opcode (RTNETBOOTP_OP_*). */
uint8_t bp_op;
/** 01 - Hardware address type. Same as RTNETARPHDR::ar_htype. */
uint8_t bp_htype;
/** 02 - Hardware address length. */
uint8_t bp_hlen;
/** 03 - Gateway hops. */
uint8_t bp_hops;
/** 04 - Transaction ID. */
uint32_t bp_xid;
/** 08 - Seconds since boot started. */
uint16_t bp_secs;
/** 0a - Unused (BOOTP) / Flags (DHCP) (RTNET_DHCP_FLAGS_*). */
uint16_t bp_flags;
/** 0c - Client IPv4 address. */
RTNETADDRIPV4 bp_ciaddr;
/** 10 - Your IPv4 address. */
RTNETADDRIPV4 bp_yiaddr;
/** 14 - Server IPv4 address. */
RTNETADDRIPV4 bp_siaddr;
/** 18 - Gateway IPv4 address. */
RTNETADDRIPV4 bp_giaddr;
/** 1c - Client hardware address. */
union
{
uint8_t au8[16];
RTMAC Mac;
} bp_chaddr;
/** 2c - Server name. */
uint8_t bp_sname[64];
/** 6c - File name / more DHCP options. */
uint8_t bp_file[128];
/** ec - Vendor specific area (BOOTP) / Options (DHCP).
* @remark This is really 312 bytes in the DHCP version. */
union
{
uint8_t au8[128];
struct DHCP
{
/** ec - The DHCP cookie (RTNET_DHCP_COOKIE). */
uint32_t dhcp_cookie;
/** f0 - The DHCP options. */
uint8_t dhcp_opts[124];
} Dhcp;
} bp_vend;
} RTNETBOOTP;
#pragma pack()
AssertCompileSize(RTNETBOOTP, 0xec + 128);
/** Pointer to a BOOTP / DHCP packet. */
typedef RTNETBOOTP *PRTNETBOOTP;
/** Pointer to a const BOOTP / DHCP packet. */
typedef RTNETBOOTP const *PCRTNETBOOTP;
/** Minimum BOOTP packet length. For quick validation, no standard thing really. */
#define RTNETBOOTP_MIN_LEN 0xec
/** Minimum DHCP packet length. For quick validation, no standard thing really. */
#define RTNETBOOTP_DHCP_MIN_LEN 0xf1
/** The normal size of the a DHCP packet (i.e. a RTNETBOOTP).
* Same as RTNET_DHCP_OPT_SIZE, just expressed differently. */
#define RTNET_DHCP_NORMAL_SIZE (0xec + 4 + RTNET_DHCP_OPT_SIZE)
/** The normal size of RTNETBOOTP::bp_vend::Dhcp::dhcp_opts. */
#define RTNET_DHCP_OPT_SIZE (312 - 4)
/** @name BOOTP packet opcode values
* @{ */
#define RTNETBOOTP_OP_REQUEST 1
#define RTNETBOOTP_OP_REPLY 2
/** @} */
/** @name DHCP flags (RTNETBOOTP::bp_flags)
* @{ */
#define RTNET_DHCP_FLAGS_NO_BROADCAST UINT16_C(0x8000) /** @todo check test!!! */
/** @} */
/** The DHCP cookie (network endian). */
#define RTNET_DHCP_COOKIE UINT32_C(0x63825363)
/**
* An IPv4 DHCP option header.
*/
typedef struct RTNETDHCPOPT
{
/** 00 - The DHCP option. */
uint8_t dhcp_opt;
/** 01 - The data length (excluding this header). */
uint8_t dhcp_len;
/* 02 - The option data follows here, optional and of variable length. */
} RTNETDHCPOPT;
AssertCompileSize(RTNETDHCPOPT, 2);
/** Pointer to a DHCP option header. */
typedef RTNETDHCPOPT *PRTNETDHCPOPT;
/** Pointer to a const DHCP option header. */
typedef RTNETDHCPOPT const *PCRTNETDHCPOPT;
/** @name DHCP options
* @{ */
/** 1 byte padding, this has no dhcp_len field. */
#define RTNET_DHCP_OPT_PAD 0
/** The subnet mask. */
#define RTNET_DHCP_OPT_SUBNET_MASK 1
/** The time offset. */
#define RTNET_DHCP_OPT_TIME_OFFSET 2
/** The routers for the subnet. */
#define RTNET_DHCP_OPT_ROUTERS 3
/** Domain Name Server. */
#define RTNET_DHCP_OPT_DNS 6
/** Host name. */
#define RTNET_DHCP_OPT_HOST_NAME 12
/** Domain name. */
#define RTNET_DHCP_OPT_DOMAIN_NAME 15
/** The requested address. */
#define RTNET_DHCP_OPT_REQ_ADDR 50
/** The lease time in seconds. */
#define RTNET_DHCP_OPT_LEASE_TIME 51
/** Option overload.
* Indicates that the bp_file and/or bp_sname holds contains DHCP options. */
#define RTNET_DHCP_OPT_OPTION_OVERLOAD 52
/** Have a 8-bit message type value as data, see RTNET_DHCP_MT_*. */
#define RTNET_DHCP_OPT_MSG_TYPE 53
/** Server ID. */
#define RTNET_DHCP_OPT_SERVER_ID 54
/** Parameter request list. */
#define RTNET_DHCP_OPT_PARAM_REQ_LIST 55
/** The maximum DHCP message size a client is willing to accept. */
#define RTNET_DHCP_OPT_MAX_DHCP_MSG_SIZE 57
/** Client ID. */
#define RTNET_DHCP_OPT_CLIENT_ID 61
/** TFTP server name. */
#define RTNET_DHCP_OPT_TFTP_SERVER_NAME 66
/** Bootfile name. */
#define RTNET_DHCP_OPT_BOOTFILE_NAME 67
/** Marks the end of the DHCP options, this has no dhcp_len field. */
#define RTNET_DHCP_OPT_END 255
/** @} */
/** @name DHCP Message Types (option 53)
* @{ */
#define RTNET_DHCP_MT_DISCOVER 1
#define RTNET_DHCP_MT_OFFER 2
#define RTNET_DHCP_MT_REQUEST 3
#define RTNET_DHCP_MT_DECLINE 4
#define RTNET_DHCP_MT_ACK 5
#define RTNET_DHCP_MT_NAC 6
#define RTNET_DHCP_MT_RELEASE 7
#define RTNET_DHCP_MT_INFORM 8
/** @} */
/** @name DHCP Flags
* @{ */
#define RTNET_DHCP_FLAG_BROADCAST 0x8000
/** @} */
RTDECL(bool) RTNetIPv4IsDHCPValid(PCRTNETUDP pUdpHdr, PCRTNETBOOTP pDhcp, size_t cbDhcp, uint8_t *pMsgType);
/**
* IPv4 DHCP packet.
* @deprecated Use RTNETBOOTP.
*/
#pragma pack(1)
typedef struct RTNETDHCP
{
/** 00 - The packet opcode. */
uint8_t Op;
/** Hardware address type. */
uint8_t HType;
/** Hardware address length. */
uint8_t HLen;
uint8_t Hops;
uint32_t XID;
uint16_t Secs;
uint16_t Flags;
/** Client IPv4 address. */
RTNETADDRIPV4 CIAddr;
/** Your IPv4 address. */
RTNETADDRIPV4 YIAddr;
/** Server IPv4 address. */
RTNETADDRIPV4 SIAddr;
/** Gateway IPv4 address. */
RTNETADDRIPV4 GIAddr;
/** Client hardware address. */
uint8_t CHAddr[16];
/** Server name. */
uint8_t SName[64];
uint8_t File[128];
uint8_t abMagic[4];
uint8_t DhcpOpt;
uint8_t DhcpLen; /* 1 */
uint8_t DhcpReq;
uint8_t abOptions[57];
} RTNETDHCP;
#pragma pack()
/** @todo AssertCompileSize(RTNETDHCP, ); */
/** Pointer to a DHCP packet. */
typedef RTNETDHCP *PRTNETDHCP;
/** Pointer to a const DHCP packet. */
typedef RTNETDHCP const *PCRTNETDHCP;
/**
* TCP packet.
*/
#pragma pack(1)
typedef struct RTNETTCP
{
/** 00 - The source port. */
uint16_t th_sport;
/** 02 - The destination port. */
uint16_t th_dport;
/** 04 - The sequence number. */
uint32_t th_seq;
/** 08 - The acknowledgement number. */
uint32_t th_ack;
#ifdef RT_BIG_ENDIAN
unsigned int th_win : 16;
unsigned int th_flags : 8;
unsigned int th_off : 4;
unsigned int th_x2 : 4;
#else
/** 0c:0 - Reserved. */
unsigned int th_x2 : 4;
/** 0c:4 - The data offset given as a dword count from the start of this header. */
unsigned int th_off : 4;
/** 0d - flags. */
unsigned int th_flags : 8;
/** 0e - The window. */
unsigned int th_win : 16;
#endif
/** 10 - The checksum of the pseudo header, the TCP header and the data. */
uint16_t th_sum;
/** 12 - The urgent pointer. */
uint16_t th_urp;
/* (options follows here and then the data (aka text).) */
} RTNETTCP;
#pragma pack()
AssertCompileSize(RTNETTCP, 20);
/** Pointer to a TCP packet. */
typedef RTNETTCP *PRTNETTCP;
/** Pointer to a const TCP packet. */
typedef RTNETTCP const *PCRTNETTCP;
/** The minimum TCP header length (in bytes). (RTNETTCP::th_off * 4) */
#define RTNETTCP_MIN_LEN (20)
/** @name TCP flags (RTNETTCP::th_flags)
* @{ */
#define RTNETTCP_F_FIN 0x01
#define RTNETTCP_F_SYN 0x02
#define RTNETTCP_F_RST 0x04
#define RTNETTCP_F_PSH 0x08
#define RTNETTCP_F_ACK 0x10
#define RTNETTCP_F_URG 0x20
#define RTNETTCP_F_ECE 0x40
#define RTNETTCP_F_CWR 0x80
/** @} */
RTDECL(uint16_t) RTNetTCPChecksum(uint32_t u32Sum, PCRTNETTCP pTcpHdr, void const *pvData, size_t cbData);
RTDECL(uint32_t) RTNetIPv4AddTCPChecksum(PCRTNETTCP pTcpHdr, uint32_t u32Sum);
RTDECL(uint16_t) RTNetIPv4TCPChecksum(PCRTNETIPV4 pIpHdr, PCRTNETTCP pTcpHdr, void const *pvData);
RTDECL(bool) RTNetIPv4IsTCPSizeValid(PCRTNETIPV4 pIpHdr, PCRTNETTCP pTcpHdr, size_t cbHdrMax, size_t cbPktMax);
RTDECL(bool) RTNetIPv4IsTCPValid(PCRTNETIPV4 pIpHdr, PCRTNETTCP pTcpHdr, size_t cbHdrMax, void const *pvData,
size_t cbPktMax, bool fChecksum);
/**
* IPv4 ICMP packet header.
*/
#pragma pack(1)
typedef struct RTNETICMPV4HDR
{
/** 00 - The ICMP message type. */
uint8_t icmp_type;
/** 01 - Type specific code that further qualifies the message. */
uint8_t icmp_code;
/** 02 - Checksum of the ICMP message. */
uint16_t icmp_cksum;
} RTNETICMPV4HDR;
#pragma pack()
AssertCompileSize(RTNETICMPV4HDR, 4);
/** Pointer to an ICMP packet header. */
typedef RTNETICMPV4HDR *PRTNETICMPV4HDR;
/** Pointer to a const ICMP packet header. */
typedef RTNETICMPV4HDR const *PCRTNETICMPV4HDR;
/** @name ICMP (v4) message types.
* @{ */
#define RTNETICMPV4_TYPE_ECHO_REPLY 0
#define RTNETICMPV4_TYPE_ECHO_REQUEST 8
#define RTNETICMPV4_TYPE_TRACEROUTE 30
/** @} */
/**
* IPv4 ICMP ECHO Reply & Request packet.
*/
#pragma pack(1)
typedef struct RTNETICMPV4ECHO
{
/** 00 - The ICMP header. */
RTNETICMPV4HDR Hdr;
/** 04 - The identifier to help the requestor match up the reply.
* Can be 0. Typically fixed value. */
uint16_t icmp_id;
/** 06 - The sequence number to help the requestor match up the reply.
* Can be 0. Typically incrementing between requests. */
uint16_t icmp_seq;
/** 08 - Variable length data that is to be returned unmodified in the reply. */
uint8_t icmp_data[1];
} RTNETICMPV4ECHO;
#pragma pack()
AssertCompileSize(RTNETICMPV4ECHO, 9);
/** Pointer to an ICMP ECHO packet. */
typedef RTNETICMPV4ECHO *PRTNETICMPV4ECHO;
/** Pointer to a const ICMP ECHO packet. */
typedef RTNETICMPV4ECHO const *PCRTNETICMPV4ECHO;
/**
* IPv4 ICMP TRACEROUTE packet.
* This is an reply to an IP packet with the traceroute option set.
*/
#pragma pack(1)
typedef struct RTNETICMPV4TRACEROUTE
{
/** 00 - The ICMP header. */
RTNETICMPV4HDR Hdr;
/** 04 - Identifier copied from the traceroute option's ID number. */
uint16_t icmp_id;
/** 06 - Unused. (Possibly an icmp_seq?) */
uint16_t icmp_void;
/** 08 - Outbound hop count. From the IP packet causing this message. */
uint16_t icmp_ohc;
/** 0a - Return hop count. From the IP packet causing this message. */
uint16_t icmp_rhc;
/** 0c - Output link speed, 0 if not known. */
uint32_t icmp_speed;
/** 10 - Output link MTU, 0 if not known. */
uint32_t icmp_mtu;
} RTNETICMPV4TRACEROUTE;
#pragma pack()
AssertCompileSize(RTNETICMPV4TRACEROUTE, 20);
/** Pointer to an ICMP TRACEROUTE packet. */
typedef RTNETICMPV4TRACEROUTE *PRTNETICMPV4TRACEROUTE;
/** Pointer to a const ICMP TRACEROUTE packet. */
typedef RTNETICMPV4TRACEROUTE const *PCRTNETICMPV4TRACEROUTE;
/** @todo add more ICMPv4 as needed. */
/**
* IPv4 ICMP union packet.
*/
typedef union RTNETICMPV4
{
RTNETICMPV4HDR Hdr;
RTNETICMPV4ECHO Echo;
RTNETICMPV4TRACEROUTE Traceroute;
} RTNETICMPV4;
/** Pointer to an ICMP union packet. */
typedef RTNETICMPV4 *PRTNETICMPV4;
/** Pointer to a const ICMP union packet. */
typedef RTNETICMPV4 const *PCRTNETICMPV4;
/**
* IPv6 ICMP packet header.
*/
#pragma pack(1)
typedef struct RTNETICMPV6HDR
{
/** 00 - The ICMPv6 message type. */
uint8_t icmp6_type;
/** 01 - Type specific code that further qualifies the message. */
uint8_t icmp6_code;
/** 02 - Checksum of the ICMPv6 message. */
uint16_t icmp6_cksum;
} RTNETICMPV6HDR;
#pragma pack()
AssertCompileSize(RTNETICMPV6HDR, 4);
/** Pointer to an ICMPv6 packet header. */
typedef RTNETICMPV6HDR *PRTNETICMPV6HDR;
/** Pointer to a const ICMP packet header. */
typedef RTNETICMPV6HDR const *PCRTNETICMPV6HDR;
#define RTNETIPV6_PROT_ICMPV6 (58)
/** @name Internet Control Message Protocol version 6 (ICMPv6) message types.
* @{ */
#define RTNETIPV6_ICMP_TYPE_RS 133
#define RTNETIPV6_ICMP_TYPE_RA 134
#define RTNETIPV6_ICMP_TYPE_NS 135
#define RTNETIPV6_ICMP_TYPE_NA 136
#define RTNETIPV6_ICMP_TYPE_RDR 137
/** @} */
/** @name Neighbor Discovery option types
* @{ */
#define RTNETIPV6_ICMP_ND_SLLA_OPT (1)
#define RTNETIPV6_ICMP_ND_TLLA_OPT (2)
/** @} */
/** ICMPv6 ND Source/Target Link Layer Address option */
#pragma pack(1)
typedef struct RTNETNDP_LLA_OPT
{
uint8_t type;
uint8_t len;
RTMAC lla;
} RTNETNDP_LLA_OPT;
#pragma pack()
AssertCompileSize(RTNETNDP_LLA_OPT, 1+1+6);
typedef RTNETNDP_LLA_OPT *PRTNETNDP_LLA_OPT;
typedef RTNETNDP_LLA_OPT const *PCRTNETNDP_LLA_OPT;
/** ICMPv6 ND Neighbor Sollicitation */
#pragma pack(1)
typedef struct RTNETNDP
{
/** 00 - The ICMPv6 header. */
RTNETICMPV6HDR Hdr;
/** 04 - reserved */
uint32_t reserved;
/** 08 - target address */
RTNETADDRIPV6 target_address;
} RTNETNDP;
#pragma pack()
AssertCompileSize(RTNETNDP, 4+4+16);
/** Pointer to a NDP ND packet. */
typedef RTNETNDP *PRTNETNDP;
/** Pointer to a const NDP NS packet. */
typedef RTNETNDP const *PCRTNETNDP;
/**
* Ethernet ARP header.
*/
#pragma pack(1)
typedef struct RTNETARPHDR
{
/** The hardware type. */
uint16_t ar_htype;
/** The protocol type (ethertype). */
uint16_t ar_ptype;
/** The hardware address length. */
uint8_t ar_hlen;
/** The protocol address length. */
uint8_t ar_plen;
/** The operation. */
uint16_t ar_oper;
} RTNETARPHDR;
#pragma pack()
AssertCompileSize(RTNETARPHDR, 8);
/** Pointer to an ethernet ARP header. */
typedef RTNETARPHDR *PRTNETARPHDR;
/** Pointer to a const ethernet ARP header. */
typedef RTNETARPHDR const *PCRTNETARPHDR;
/** ARP hardware type - ethernet. */
#define RTNET_ARP_ETHER UINT16_C(1)
/** @name ARP operations
* @{ */
#define RTNET_ARPOP_REQUEST UINT16_C(1) /**< Request hardware address given a protocol address (ARP). */
#define RTNET_ARPOP_REPLY UINT16_C(2)
#define RTNET_ARPOP_REVREQUEST UINT16_C(3) /**< Request protocol address given a hardware address (RARP). */
#define RTNET_ARPOP_REVREPLY UINT16_C(4)
#define RTNET_ARPOP_INVREQUEST UINT16_C(8) /**< Inverse ARP. */
#define RTNET_ARPOP_INVREPLY UINT16_C(9)
/** Check if an ARP operation is a request or not. */
#define RTNET_ARPOP_IS_REQUEST(Op) ((Op) & 1)
/** Check if an ARP operation is a reply or not. */
#define RTNET_ARPOP_IS_REPLY(Op) (!RTNET_ARPOP_IS_REQUEST(Op))
/** @} */
/**
* Ethernet IPv4 + 6-byte MAC ARP request packet.
*/
#pragma pack(1)
typedef struct RTNETARPIPV4
{
/** ARP header. */
RTNETARPHDR Hdr;
/** The sender hardware address. */
RTMAC ar_sha;
/** The sender protocol address. */
RTNETADDRIPV4 ar_spa;
/** The target hardware address. */
RTMAC ar_tha;
/** The target protocol address. */
RTNETADDRIPV4 ar_tpa;
} RTNETARPIPV4;
#pragma pack()
AssertCompileSize(RTNETARPIPV4, 8+6+4+6+4);
/** Pointer to an ethernet IPv4+MAC ARP request packet. */
typedef RTNETARPIPV4 *PRTNETARPIPV4;
/** Pointer to a const ethernet IPv4+MAC ARP request packet. */
typedef RTNETARPIPV4 const *PCRTNETARPIPV4;
/** @} */
RT_C_DECLS_END
#endif /* !IPRT_INCLUDED_net_h */
|