forked from nix-rust/nix
/
addr.rs
3114 lines (2876 loc) · 102 KB
/
addr.rs
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
#[cfg(any(
target_os = "android",
target_os = "dragonfly",
target_os = "freebsd",
target_os = "ios",
target_os = "linux",
target_os = "macos",
target_os = "illumos",
target_os = "netbsd",
target_os = "openbsd",
target_os = "haiku",
target_os = "fuchsia"
))]
#[cfg(feature = "net")]
pub use self::datalink::LinkAddr;
#[cfg(any(target_os = "android", target_os = "linux"))]
pub use self::vsock::VsockAddr;
use super::sa_family_t;
use crate::errno::Errno;
#[cfg(any(target_os = "android", target_os = "linux"))]
use crate::sys::socket::addr::alg::AlgAddr;
#[cfg(any(target_os = "android", target_os = "linux"))]
use crate::sys::socket::addr::netlink::NetlinkAddr;
#[cfg(all(
feature = "ioctl",
any(target_os = "ios", target_os = "macos")
))]
use crate::sys::socket::addr::sys_control::SysControlAddr;
use crate::{NixPath, Result};
use cfg_if::cfg_if;
use memoffset::offset_of;
use std::convert::TryInto;
use std::ffi::OsStr;
use std::hash::{Hash, Hasher};
use std::os::unix::ffi::OsStrExt;
#[cfg(any(target_os = "ios", target_os = "macos"))]
use std::os::unix::io::RawFd;
use std::path::Path;
use std::{fmt, mem, net, ptr, slice};
/// Convert a std::net::Ipv4Addr into the libc form.
#[cfg(feature = "net")]
pub(crate) const fn ipv4addr_to_libc(addr: net::Ipv4Addr) -> libc::in_addr {
static_assertions::assert_eq_size!(net::Ipv4Addr, libc::in_addr);
// Safe because both types have the same memory layout, and no fancy Drop
// impls.
unsafe {
mem::transmute(addr)
}
}
/// Convert a std::net::Ipv6Addr into the libc form.
#[cfg(feature = "net")]
pub(crate) const fn ipv6addr_to_libc(addr: &net::Ipv6Addr) -> libc::in6_addr {
static_assertions::assert_eq_size!(net::Ipv6Addr, libc::in6_addr);
// Safe because both are Newtype wrappers around the same libc type
unsafe {
mem::transmute(*addr)
}
}
/// These constants specify the protocol family to be used
/// in [`socket`](fn.socket.html) and [`socketpair`](fn.socketpair.html)
///
/// # References
///
/// [address_families(7)](https://man7.org/linux/man-pages/man7/address_families.7.html)
// Should this be u8?
#[repr(i32)]
#[non_exhaustive]
#[derive(Copy, Clone, PartialEq, Eq, Debug, Hash)]
pub enum AddressFamily {
/// Local communication (see [`unix(7)`](https://man7.org/linux/man-pages/man7/unix.7.html))
Unix = libc::AF_UNIX,
/// IPv4 Internet protocols (see [`ip(7)`](https://man7.org/linux/man-pages/man7/ip.7.html))
Inet = libc::AF_INET,
/// IPv6 Internet protocols (see [`ipv6(7)`](https://man7.org/linux/man-pages/man7/ipv6.7.html))
Inet6 = libc::AF_INET6,
/// Kernel user interface device (see [`netlink(7)`](https://man7.org/linux/man-pages/man7/netlink.7.html))
#[cfg(any(target_os = "android", target_os = "linux"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
Netlink = libc::AF_NETLINK,
/// Low level packet interface (see [`packet(7)`](https://man7.org/linux/man-pages/man7/packet.7.html))
#[cfg(any(
target_os = "android",
target_os = "linux",
target_os = "illumos",
target_os = "fuchsia",
target_os = "solaris"
))]
#[cfg_attr(docsrs, doc(cfg(all())))]
Packet = libc::AF_PACKET,
/// KEXT Controls and Notifications
#[cfg(any(target_os = "ios", target_os = "macos"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
System = libc::AF_SYSTEM,
/// Amateur radio AX.25 protocol
#[cfg(any(target_os = "android", target_os = "linux"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
Ax25 = libc::AF_AX25,
/// IPX - Novell protocols
Ipx = libc::AF_IPX,
/// AppleTalk
AppleTalk = libc::AF_APPLETALK,
/// AX.25 packet layer protocol.
/// (see [netrom(4)](https://www.unix.com/man-page/linux/4/netrom/))
#[cfg(any(target_os = "android", target_os = "linux"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
NetRom = libc::AF_NETROM,
/// Can't be used for creating sockets; mostly used for bridge
/// links in
/// [rtnetlink(7)](https://man7.org/linux/man-pages/man7/rtnetlink.7.html)
/// protocol commands.
#[cfg(any(target_os = "android", target_os = "linux"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
Bridge = libc::AF_BRIDGE,
/// Access to raw ATM PVCs
#[cfg(any(target_os = "android", target_os = "linux"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
AtmPvc = libc::AF_ATMPVC,
/// ITU-T X.25 / ISO-8208 protocol (see [`x25(7)`](https://man7.org/linux/man-pages/man7/x25.7.html))
#[cfg(any(target_os = "android", target_os = "linux"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
X25 = libc::AF_X25,
/// RATS (Radio Amateur Telecommunications Society) Open
/// Systems environment (ROSE) AX.25 packet layer protocol.
/// (see [netrom(4)](https://www.unix.com/man-page/linux/4/netrom/))
#[cfg(any(target_os = "android", target_os = "linux"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
Rose = libc::AF_ROSE,
/// DECet protocol sockets.
#[cfg(not(target_os = "haiku"))]
Decnet = libc::AF_DECnet,
/// Reserved for "802.2LLC project"; never used.
#[cfg(any(target_os = "android", target_os = "linux"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
NetBeui = libc::AF_NETBEUI,
/// This was a short-lived (between Linux 2.1.30 and
/// 2.1.99pre2) protocol family for firewall upcalls.
#[cfg(any(target_os = "android", target_os = "linux"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
Security = libc::AF_SECURITY,
/// Key management protocol.
#[cfg(any(target_os = "android", target_os = "linux"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
Key = libc::AF_KEY,
#[allow(missing_docs)] // Not documented anywhere that I can find
#[cfg(any(target_os = "android", target_os = "linux"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
Ash = libc::AF_ASH,
/// Acorn Econet protocol
#[cfg(any(target_os = "android", target_os = "linux"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
Econet = libc::AF_ECONET,
/// Access to ATM Switched Virtual Circuits
#[cfg(any(target_os = "android", target_os = "linux"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
AtmSvc = libc::AF_ATMSVC,
/// Reliable Datagram Sockets (RDS) protocol
#[cfg(any(target_os = "android", target_os = "linux"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
Rds = libc::AF_RDS,
/// IBM SNA
#[cfg(not(target_os = "haiku"))]
Sna = libc::AF_SNA,
/// Socket interface over IrDA
#[cfg(any(target_os = "android", target_os = "linux"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
Irda = libc::AF_IRDA,
/// Generic PPP transport layer, for setting up L2 tunnels (L2TP and PPPoE)
#[cfg(any(target_os = "android", target_os = "linux"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
Pppox = libc::AF_PPPOX,
/// Legacy protocol for wide area network (WAN) connectivity that was used
/// by Sangoma WAN cards
#[cfg(any(target_os = "android", target_os = "linux"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
Wanpipe = libc::AF_WANPIPE,
/// Logical link control (IEEE 802.2 LLC) protocol
#[cfg(any(target_os = "android", target_os = "linux"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
Llc = libc::AF_LLC,
/// InfiniBand native addressing
#[cfg(all(target_os = "linux", not(target_env = "uclibc")))]
#[cfg_attr(docsrs, doc(cfg(all())))]
Ib = libc::AF_IB,
/// Multiprotocol Label Switching
#[cfg(all(target_os = "linux", not(target_env = "uclibc")))]
#[cfg_attr(docsrs, doc(cfg(all())))]
Mpls = libc::AF_MPLS,
/// Controller Area Network automotive bus protocol
#[cfg(any(target_os = "android", target_os = "linux"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
Can = libc::AF_CAN,
/// TIPC, "cluster domain sockets" protocol
#[cfg(any(target_os = "android", target_os = "linux"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
Tipc = libc::AF_TIPC,
/// Bluetooth low-level socket protocol
#[cfg(not(any(
target_os = "illumos",
target_os = "ios",
target_os = "macos",
target_os = "solaris"
)))]
#[cfg_attr(docsrs, doc(cfg(all())))]
Bluetooth = libc::AF_BLUETOOTH,
/// IUCV (inter-user communication vehicle) z/VM protocol for
/// hypervisor-guest interaction
#[cfg(any(target_os = "android", target_os = "linux"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
Iucv = libc::AF_IUCV,
/// Rx, Andrew File System remote procedure call protocol
#[cfg(any(target_os = "android", target_os = "linux"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
RxRpc = libc::AF_RXRPC,
/// New "modular ISDN" driver interface protocol
#[cfg(not(any(
target_os = "illumos",
target_os = "solaris",
target_os = "haiku"
)))]
#[cfg_attr(docsrs, doc(cfg(all())))]
Isdn = libc::AF_ISDN,
/// Nokia cellular modem IPC/RPC interface
#[cfg(any(target_os = "android", target_os = "linux"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
Phonet = libc::AF_PHONET,
/// IEEE 802.15.4 WPAN (wireless personal area network) raw packet protocol
#[cfg(any(target_os = "android", target_os = "linux"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
Ieee802154 = libc::AF_IEEE802154,
/// Ericsson's Communication CPU to Application CPU interface (CAIF)
/// protocol.
#[cfg(any(target_os = "android", target_os = "linux"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
Caif = libc::AF_CAIF,
/// Interface to kernel crypto API
#[cfg(any(target_os = "android", target_os = "linux"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
Alg = libc::AF_ALG,
/// Near field communication
#[cfg(target_os = "linux")]
#[cfg_attr(docsrs, doc(cfg(all())))]
Nfc = libc::AF_NFC,
/// VMWare VSockets protocol for hypervisor-guest interaction.
#[cfg(any(target_os = "android", target_os = "linux"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
Vsock = libc::AF_VSOCK,
/// ARPANet IMP addresses
#[cfg(any(
target_os = "dragonfly",
target_os = "freebsd",
target_os = "ios",
target_os = "macos",
target_os = "netbsd",
target_os = "openbsd"
))]
#[cfg_attr(docsrs, doc(cfg(all())))]
ImpLink = libc::AF_IMPLINK,
/// PUP protocols, e.g. BSP
#[cfg(any(
target_os = "dragonfly",
target_os = "freebsd",
target_os = "ios",
target_os = "macos",
target_os = "netbsd",
target_os = "openbsd"
))]
#[cfg_attr(docsrs, doc(cfg(all())))]
Pup = libc::AF_PUP,
/// MIT CHAOS protocols
#[cfg(any(
target_os = "dragonfly",
target_os = "freebsd",
target_os = "ios",
target_os = "macos",
target_os = "netbsd",
target_os = "openbsd"
))]
#[cfg_attr(docsrs, doc(cfg(all())))]
Chaos = libc::AF_CHAOS,
/// Novell and Xerox protocol
#[cfg(any(
target_os = "ios",
target_os = "macos",
target_os = "netbsd",
target_os = "openbsd"
))]
#[cfg_attr(docsrs, doc(cfg(all())))]
Ns = libc::AF_NS,
#[allow(missing_docs)] // Not documented anywhere that I can find
#[cfg(any(
target_os = "dragonfly",
target_os = "freebsd",
target_os = "ios",
target_os = "macos",
target_os = "netbsd",
target_os = "openbsd"
))]
#[cfg_attr(docsrs, doc(cfg(all())))]
Iso = libc::AF_ISO,
/// Bell Labs virtual circuit switch ?
#[cfg(any(
target_os = "dragonfly",
target_os = "freebsd",
target_os = "ios",
target_os = "macos",
target_os = "netbsd",
target_os = "openbsd"
))]
#[cfg_attr(docsrs, doc(cfg(all())))]
Datakit = libc::AF_DATAKIT,
/// CCITT protocols, X.25 etc
#[cfg(any(
target_os = "dragonfly",
target_os = "freebsd",
target_os = "ios",
target_os = "macos",
target_os = "netbsd",
target_os = "openbsd"
))]
#[cfg_attr(docsrs, doc(cfg(all())))]
Ccitt = libc::AF_CCITT,
/// DEC Direct data link interface
#[cfg(any(
target_os = "dragonfly",
target_os = "freebsd",
target_os = "ios",
target_os = "macos",
target_os = "netbsd",
target_os = "openbsd"
))]
#[cfg_attr(docsrs, doc(cfg(all())))]
Dli = libc::AF_DLI,
#[allow(missing_docs)] // Not documented anywhere that I can find
#[cfg(any(
target_os = "dragonfly",
target_os = "freebsd",
target_os = "ios",
target_os = "macos",
target_os = "netbsd",
target_os = "openbsd"
))]
#[cfg_attr(docsrs, doc(cfg(all())))]
Lat = libc::AF_LAT,
/// NSC Hyperchannel
#[cfg(any(
target_os = "dragonfly",
target_os = "freebsd",
target_os = "ios",
target_os = "macos",
target_os = "netbsd",
target_os = "openbsd"
))]
#[cfg_attr(docsrs, doc(cfg(all())))]
Hylink = libc::AF_HYLINK,
/// Link layer interface
#[cfg(any(
target_os = "dragonfly",
target_os = "freebsd",
target_os = "ios",
target_os = "macos",
target_os = "illumos",
target_os = "netbsd",
target_os = "openbsd"
))]
#[cfg_attr(docsrs, doc(cfg(all())))]
Link = libc::AF_LINK,
/// connection-oriented IP, aka ST II
#[cfg(any(
target_os = "dragonfly",
target_os = "freebsd",
target_os = "ios",
target_os = "macos",
target_os = "netbsd",
target_os = "openbsd"
))]
#[cfg_attr(docsrs, doc(cfg(all())))]
Coip = libc::AF_COIP,
/// Computer Network Technology
#[cfg(any(
target_os = "dragonfly",
target_os = "freebsd",
target_os = "ios",
target_os = "macos",
target_os = "netbsd",
target_os = "openbsd"
))]
#[cfg_attr(docsrs, doc(cfg(all())))]
Cnt = libc::AF_CNT,
/// Native ATM access
#[cfg(any(
target_os = "dragonfly",
target_os = "freebsd",
target_os = "ios",
target_os = "macos",
target_os = "netbsd",
target_os = "openbsd"
))]
#[cfg_attr(docsrs, doc(cfg(all())))]
Natm = libc::AF_NATM,
/// Unspecified address family, (see [`getaddrinfo(3)`](https://man7.org/linux/man-pages/man3/getaddrinfo.3.html))
#[cfg(any(target_os = "android", target_os = "linux"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
Unspec = libc::AF_UNSPEC,
}
impl AddressFamily {
/// Create a new `AddressFamily` from an integer value retrieved from `libc`, usually from
/// the `sa_family` field of a `sockaddr`.
///
/// Currently only supports these address families: Unix, Inet (v4 & v6), Netlink, Link/Packet
/// and System. Returns None for unsupported or unknown address families.
pub const fn from_i32(family: i32) -> Option<AddressFamily> {
match family {
libc::AF_UNIX => Some(AddressFamily::Unix),
libc::AF_INET => Some(AddressFamily::Inet),
libc::AF_INET6 => Some(AddressFamily::Inet6),
#[cfg(any(target_os = "android", target_os = "linux"))]
libc::AF_NETLINK => Some(AddressFamily::Netlink),
#[cfg(any(target_os = "macos", target_os = "macos"))]
libc::AF_SYSTEM => Some(AddressFamily::System),
#[cfg(any(target_os = "android", target_os = "linux"))]
libc::AF_PACKET => Some(AddressFamily::Packet),
#[cfg(any(
target_os = "dragonfly",
target_os = "freebsd",
target_os = "ios",
target_os = "macos",
target_os = "netbsd",
target_os = "illumos",
target_os = "openbsd"
))]
libc::AF_LINK => Some(AddressFamily::Link),
#[cfg(any(target_os = "android", target_os = "linux"))]
libc::AF_VSOCK => Some(AddressFamily::Vsock),
_ => None,
}
}
}
feature! {
#![feature = "net"]
#[deprecated(
since = "0.24.0",
note = "use SockaddrIn, SockaddrIn6, or SockaddrStorage instead"
)]
#[allow(missing_docs)] // Since they're all deprecated anyway
#[derive(Clone, Copy, Debug, Eq, Hash, PartialEq)]
pub enum InetAddr {
V4(libc::sockaddr_in),
V6(libc::sockaddr_in6),
}
#[allow(missing_docs)] // It's deprecated anyway
#[allow(deprecated)]
impl InetAddr {
#[allow(clippy::needless_update)] // It isn't needless on all OSes
pub fn from_std(std: &net::SocketAddr) -> InetAddr {
match *std {
net::SocketAddr::V4(ref addr) => {
InetAddr::V4(libc::sockaddr_in {
#[cfg(any(target_os = "dragonfly", target_os = "freebsd",
target_os = "haiku", target_os = "hermit",
target_os = "ios", target_os = "macos",
target_os = "netbsd", target_os = "openbsd"))]
sin_len: mem::size_of::<libc::sockaddr_in>() as u8,
sin_family: AddressFamily::Inet as sa_family_t,
sin_port: addr.port().to_be(), // network byte order
sin_addr: Ipv4Addr::from_std(addr.ip()).0,
.. unsafe { mem::zeroed() }
})
}
net::SocketAddr::V6(ref addr) => {
InetAddr::V6(libc::sockaddr_in6 {
#[cfg(any(target_os = "dragonfly", target_os = "freebsd",
target_os = "haiku", target_os = "hermit",
target_os = "ios", target_os = "macos",
target_os = "netbsd", target_os = "openbsd"))]
sin6_len: mem::size_of::<libc::sockaddr_in6>() as u8,
sin6_family: AddressFamily::Inet6 as sa_family_t,
sin6_port: addr.port().to_be(), // network byte order
sin6_addr: Ipv6Addr::from_std(addr.ip()).0,
sin6_flowinfo: addr.flowinfo(), // host byte order
sin6_scope_id: addr.scope_id(), // host byte order
.. unsafe { mem::zeroed() }
})
}
}
}
#[allow(clippy::needless_update)] // It isn't needless on all OSes
pub fn new(ip: IpAddr, port: u16) -> InetAddr {
match ip {
IpAddr::V4(ref ip) => {
InetAddr::V4(libc::sockaddr_in {
sin_family: AddressFamily::Inet as sa_family_t,
sin_port: port.to_be(),
sin_addr: ip.0,
.. unsafe { mem::zeroed() }
})
}
IpAddr::V6(ref ip) => {
InetAddr::V6(libc::sockaddr_in6 {
sin6_family: AddressFamily::Inet6 as sa_family_t,
sin6_port: port.to_be(),
sin6_addr: ip.0,
.. unsafe { mem::zeroed() }
})
}
}
}
/// Gets the IP address associated with this socket address.
pub const fn ip(&self) -> IpAddr {
match *self {
InetAddr::V4(ref sa) => IpAddr::V4(Ipv4Addr(sa.sin_addr)),
InetAddr::V6(ref sa) => IpAddr::V6(Ipv6Addr(sa.sin6_addr)),
}
}
/// Gets the port number associated with this socket address
pub const fn port(&self) -> u16 {
match *self {
InetAddr::V6(ref sa) => u16::from_be(sa.sin6_port),
InetAddr::V4(ref sa) => u16::from_be(sa.sin_port),
}
}
pub fn to_std(&self) -> net::SocketAddr {
match *self {
InetAddr::V4(ref sa) => net::SocketAddr::V4(
net::SocketAddrV4::new(
Ipv4Addr(sa.sin_addr).to_std(),
self.port())),
InetAddr::V6(ref sa) => net::SocketAddr::V6(
net::SocketAddrV6::new(
Ipv6Addr(sa.sin6_addr).to_std(),
self.port(),
sa.sin6_flowinfo,
sa.sin6_scope_id)),
}
}
#[deprecated(since = "0.23.0", note = "use .to_string() instead")]
pub fn to_str(&self) -> String {
format!("{}", self)
}
}
#[allow(deprecated)]
impl fmt::Display for InetAddr {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match *self {
InetAddr::V4(_) => write!(f, "{}:{}", self.ip(), self.port()),
InetAddr::V6(_) => write!(f, "[{}]:{}", self.ip(), self.port()),
}
}
}
/*
*
* ===== IpAddr =====
*
*/
#[allow(missing_docs)] // Since they're all deprecated anyway
#[allow(deprecated)]
#[derive(Clone, Copy, Debug, Eq, Hash, PartialEq)]
#[deprecated(
since = "0.24.0",
note = "Use std::net::IpAddr instead"
)]
pub enum IpAddr {
V4(Ipv4Addr),
V6(Ipv6Addr),
}
#[allow(deprecated)]
#[allow(missing_docs)] // Since they're all deprecated anyway
impl IpAddr {
/// Create a new IpAddr that contains an IPv4 address.
///
/// The result will represent the IP address a.b.c.d
pub const fn new_v4(a: u8, b: u8, c: u8, d: u8) -> IpAddr {
IpAddr::V4(Ipv4Addr::new(a, b, c, d))
}
/// Create a new IpAddr that contains an IPv6 address.
///
/// The result will represent the IP address a:b:c:d:e:f
#[allow(clippy::many_single_char_names)]
#[allow(clippy::too_many_arguments)]
pub const fn new_v6(a: u16, b: u16, c: u16, d: u16, e: u16, f: u16, g: u16, h: u16) -> IpAddr {
IpAddr::V6(Ipv6Addr::new(a, b, c, d, e, f, g, h))
}
pub fn from_std(std: &net::IpAddr) -> IpAddr {
match *std {
net::IpAddr::V4(ref std) => IpAddr::V4(Ipv4Addr::from_std(std)),
net::IpAddr::V6(ref std) => IpAddr::V6(Ipv6Addr::from_std(std)),
}
}
pub const fn to_std(&self) -> net::IpAddr {
match *self {
IpAddr::V4(ref ip) => net::IpAddr::V4(ip.to_std()),
IpAddr::V6(ref ip) => net::IpAddr::V6(ip.to_std()),
}
}
}
#[allow(deprecated)]
impl fmt::Display for IpAddr {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match *self {
IpAddr::V4(ref v4) => v4.fmt(f),
IpAddr::V6(ref v6) => v6.fmt(f)
}
}
}
/*
*
* ===== Ipv4Addr =====
*
*/
#[deprecated(
since = "0.24.0",
note = "Use std::net::Ipv4Addr instead"
)]
#[allow(missing_docs)] // Since they're all deprecated anyway
#[derive(Clone, Copy, Debug, Eq, Hash, PartialEq)]
#[repr(transparent)]
pub struct Ipv4Addr(pub libc::in_addr);
#[allow(deprecated)]
#[allow(missing_docs)] // Since they're all deprecated anyway
impl Ipv4Addr {
#[allow(clippy::identity_op)] // More readable this way
pub const fn new(a: u8, b: u8, c: u8, d: u8) -> Ipv4Addr {
let ip = (((a as u32) << 24) |
((b as u32) << 16) |
((c as u32) << 8) |
((d as u32) << 0)).to_be();
Ipv4Addr(libc::in_addr { s_addr: ip })
}
// Use pass by reference for symmetry with Ipv6Addr::from_std
#[allow(clippy::trivially_copy_pass_by_ref)]
pub fn from_std(std: &net::Ipv4Addr) -> Ipv4Addr {
let bits = std.octets();
Ipv4Addr::new(bits[0], bits[1], bits[2], bits[3])
}
pub const fn any() -> Ipv4Addr {
Ipv4Addr(libc::in_addr { s_addr: libc::INADDR_ANY })
}
pub const fn octets(self) -> [u8; 4] {
let bits = u32::from_be(self.0.s_addr);
[(bits >> 24) as u8, (bits >> 16) as u8, (bits >> 8) as u8, bits as u8]
}
pub const fn to_std(self) -> net::Ipv4Addr {
let bits = self.octets();
net::Ipv4Addr::new(bits[0], bits[1], bits[2], bits[3])
}
}
#[allow(deprecated)]
impl fmt::Display for Ipv4Addr {
fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
let octets = self.octets();
write!(fmt, "{}.{}.{}.{}", octets[0], octets[1], octets[2], octets[3])
}
}
/*
*
* ===== Ipv6Addr =====
*
*/
#[deprecated(
since = "0.24.0",
note = "Use std::net::Ipv6Addr instead"
)]
#[allow(missing_docs)] // Since they're all deprecated anyway
#[derive(Clone, Copy, Debug, Eq, Hash, PartialEq)]
#[repr(transparent)]
pub struct Ipv6Addr(pub libc::in6_addr);
// Note that IPv6 addresses are stored in big endian order on all architectures.
// See https://tools.ietf.org/html/rfc1700 or consult your favorite search
// engine.
macro_rules! to_u8_array {
($($num:ident),*) => {
[ $(($num>>8) as u8, ($num&0xff) as u8,)* ]
}
}
macro_rules! to_u16_array {
($slf:ident, $($first:expr, $second:expr),*) => {
[$( (($slf.0.s6_addr[$first] as u16) << 8) + $slf.0.s6_addr[$second] as u16,)*]
}
}
#[allow(deprecated)]
#[allow(missing_docs)] // Since they're all deprecated anyway
impl Ipv6Addr {
#[allow(clippy::many_single_char_names)]
#[allow(clippy::too_many_arguments)]
pub const fn new(a: u16, b: u16, c: u16, d: u16, e: u16, f: u16, g: u16, h: u16) -> Ipv6Addr {
Ipv6Addr(libc::in6_addr{s6_addr: to_u8_array!(a,b,c,d,e,f,g,h)})
}
pub fn from_std(std: &net::Ipv6Addr) -> Ipv6Addr {
let s = std.segments();
Ipv6Addr::new(s[0], s[1], s[2], s[3], s[4], s[5], s[6], s[7])
}
/// Return the eight 16-bit segments that make up this address
pub const fn segments(&self) -> [u16; 8] {
to_u16_array!(self, 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15)
}
pub const fn to_std(&self) -> net::Ipv6Addr {
let s = self.segments();
net::Ipv6Addr::new(s[0], s[1], s[2], s[3], s[4], s[5], s[6], s[7])
}
}
#[allow(deprecated)]
impl fmt::Display for Ipv6Addr {
fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
self.to_std().fmt(fmt)
}
}
}
/// A wrapper around `sockaddr_un`.
#[derive(Clone, Copy, Debug)]
#[repr(C)]
pub struct UnixAddr {
// INVARIANT: sun & sun_len are valid as defined by docs for from_raw_parts
sun: libc::sockaddr_un,
/// The length of the valid part of `sun`, including the sun_family field
/// but excluding any trailing nul.
// On the BSDs, this field is built into sun
#[cfg(any(
target_os = "android",
target_os = "fuchsia",
target_os = "illumos",
target_os = "linux"
))]
sun_len: u8,
}
// linux man page unix(7) says there are 3 kinds of unix socket:
// pathname: addrlen = offsetof(struct sockaddr_un, sun_path) + strlen(sun_path) + 1
// unnamed: addrlen = sizeof(sa_family_t)
// abstract: addren > sizeof(sa_family_t), name = sun_path[..(addrlen - sizeof(sa_family_t))]
//
// what we call path_len = addrlen - offsetof(struct sockaddr_un, sun_path)
#[derive(PartialEq, Eq, Hash)]
enum UnixAddrKind<'a> {
Pathname(&'a Path),
Unnamed,
#[cfg(any(target_os = "android", target_os = "linux"))]
Abstract(&'a [u8]),
}
impl<'a> UnixAddrKind<'a> {
/// Safety: sun & sun_len must be valid
unsafe fn get(sun: &'a libc::sockaddr_un, sun_len: u8) -> Self {
assert!(sun_len as usize >= offset_of!(libc::sockaddr_un, sun_path));
let path_len =
sun_len as usize - offset_of!(libc::sockaddr_un, sun_path);
if path_len == 0 {
return Self::Unnamed;
}
#[cfg(any(target_os = "android", target_os = "linux"))]
if sun.sun_path[0] == 0 {
let name = slice::from_raw_parts(
sun.sun_path.as_ptr().add(1) as *const u8,
path_len - 1,
);
return Self::Abstract(name);
}
let pathname =
slice::from_raw_parts(sun.sun_path.as_ptr() as *const u8, path_len);
if pathname.last() == Some(&0) {
// A trailing NUL is not considered part of the path, and it does
// not need to be included in the addrlen passed to functions like
// bind(). However, Linux adds a trailing NUL, even if one was not
// originally present, when returning addrs from functions like
// getsockname() (the BSDs do not do that). So we need to filter
// out any trailing NUL here, so sockaddrs can round-trip through
// the kernel and still compare equal.
Self::Pathname(Path::new(OsStr::from_bytes(
&pathname[0..pathname.len() - 1],
)))
} else {
Self::Pathname(Path::new(OsStr::from_bytes(pathname)))
}
}
}
impl UnixAddr {
/// Create a new sockaddr_un representing a filesystem path.
pub fn new<P: ?Sized + NixPath>(path: &P) -> Result<UnixAddr> {
path.with_nix_path(|cstr| unsafe {
let mut ret = libc::sockaddr_un {
sun_family: AddressFamily::Unix as sa_family_t,
..mem::zeroed()
};
let bytes = cstr.to_bytes();
if bytes.len() >= ret.sun_path.len() {
return Err(Errno::ENAMETOOLONG);
}
let sun_len = (bytes.len()
+ offset_of!(libc::sockaddr_un, sun_path))
.try_into()
.unwrap();
#[cfg(any(
target_os = "dragonfly",
target_os = "freebsd",
target_os = "ios",
target_os = "macos",
target_os = "netbsd",
target_os = "openbsd"
))]
{
ret.sun_len = sun_len;
}
ptr::copy_nonoverlapping(
bytes.as_ptr(),
ret.sun_path.as_mut_ptr() as *mut u8,
bytes.len(),
);
Ok(UnixAddr::from_raw_parts(ret, sun_len))
})?
}
/// Create a new `sockaddr_un` representing an address in the "abstract namespace".
///
/// The leading nul byte for the abstract namespace is automatically added;
/// thus the input `path` is expected to be the bare name, not NUL-prefixed.
/// This is a Linux-specific extension, primarily used to allow chrooted
/// processes to communicate with processes having a different filesystem view.
#[cfg(any(target_os = "android", target_os = "linux"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
pub fn new_abstract(path: &[u8]) -> Result<UnixAddr> {
unsafe {
let mut ret = libc::sockaddr_un {
sun_family: AddressFamily::Unix as sa_family_t,
..mem::zeroed()
};
if path.len() >= ret.sun_path.len() {
return Err(Errno::ENAMETOOLONG);
}
let sun_len =
(path.len() + 1 + offset_of!(libc::sockaddr_un, sun_path))
.try_into()
.unwrap();
// Abstract addresses are represented by sun_path[0] ==
// b'\0', so copy starting one byte in.
ptr::copy_nonoverlapping(
path.as_ptr(),
ret.sun_path.as_mut_ptr().offset(1) as *mut u8,
path.len(),
);
Ok(UnixAddr::from_raw_parts(ret, sun_len))
}
}
/// Create a new `sockaddr_un` representing an "unnamed" unix socket address.
#[cfg(any(target_os = "android", target_os = "linux"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
pub fn new_unnamed() -> UnixAddr {
let ret = libc::sockaddr_un {
sun_family: AddressFamily::Unix as sa_family_t,
.. unsafe { mem::zeroed() }
};
let sun_len: u8 = offset_of!(libc::sockaddr_un, sun_path).try_into().unwrap();
unsafe { UnixAddr::from_raw_parts(ret, sun_len) }
}
/// Create a UnixAddr from a raw `sockaddr_un` struct and a size. `sun_len`
/// is the size of the valid portion of the struct, excluding any trailing
/// NUL.
///
/// # Safety
/// This pair of sockaddr_un & sun_len must be a valid unix addr, which
/// means:
/// - sun_len >= offset_of(sockaddr_un, sun_path)
/// - sun_len <= sockaddr_un.sun_path.len() - offset_of(sockaddr_un, sun_path)
/// - if this is a unix addr with a pathname, sun.sun_path is a
/// fs path, not necessarily nul-terminated.
pub(crate) unsafe fn from_raw_parts(
sun: libc::sockaddr_un,
sun_len: u8,
) -> UnixAddr {
cfg_if! {
if #[cfg(any(target_os = "android",
target_os = "fuchsia",
target_os = "illumos",
target_os = "linux"
))]
{
UnixAddr { sun, sun_len }
} else {
assert_eq!(sun_len, sun.sun_len);
UnixAddr {sun}
}
}
}
fn kind(&self) -> UnixAddrKind<'_> {
// SAFETY: our sockaddr is always valid because of the invariant on the struct
unsafe { UnixAddrKind::get(&self.sun, self.sun_len()) }
}
/// If this address represents a filesystem path, return that path.
pub fn path(&self) -> Option<&Path> {
match self.kind() {
UnixAddrKind::Pathname(path) => Some(path),
_ => None,
}
}
/// If this address represents an abstract socket, return its name.
///
/// For abstract sockets only the bare name is returned, without the
/// leading NUL byte. `None` is returned for unnamed or path-backed sockets.
#[cfg(any(target_os = "android", target_os = "linux"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
pub fn as_abstract(&self) -> Option<&[u8]> {
match self.kind() {
UnixAddrKind::Abstract(name) => Some(name),
_ => None,
}
}
/// Check if this address is an "unnamed" unix socket address.
#[cfg(any(target_os = "android", target_os = "linux"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
#[inline]
pub fn is_unnamed(&self) -> bool {
matches!(self.kind(), UnixAddrKind::Unnamed)
}
/// Returns the addrlen of this socket - `offsetof(struct sockaddr_un, sun_path)`
#[inline]
pub fn path_len(&self) -> usize {
self.sun_len() as usize - offset_of!(libc::sockaddr_un, sun_path)
}
/// Returns a pointer to the raw `sockaddr_un` struct
#[inline]
pub fn as_ptr(&self) -> *const libc::sockaddr_un {
&self.sun
}
/// Returns a mutable pointer to the raw `sockaddr_un` struct
#[inline]
pub fn as_mut_ptr(&mut self) -> *mut libc::sockaddr_un {
&mut self.sun
}
fn sun_len(&self) -> u8 {
cfg_if! {
if #[cfg(any(target_os = "android",
target_os = "fuchsia",
target_os = "illumos",
target_os = "linux"
))]
{
self.sun_len
} else {
self.sun.sun_len
}
}
}
}
impl private::SockaddrLikePriv for UnixAddr {}
impl SockaddrLike for UnixAddr {
#[cfg(any(