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e5989e71 JW |
1 | // <experimental/internet> -*- C++ -*- |
2 | ||
99dee823 | 3 | // Copyright (C) 2015-2021 Free Software Foundation, Inc. |
e5989e71 JW |
4 | // |
5 | // This file is part of the GNU ISO C++ Library. This library is free | |
6 | // software; you can redistribute it and/or modify it under the | |
7 | // terms of the GNU General Public License as published by the | |
8 | // Free Software Foundation; either version 3, or (at your option) | |
9 | // any later version. | |
10 | ||
11 | // This library is distributed in the hope that it will be useful, | |
12 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | // GNU General Public License for more details. | |
15 | ||
16 | // Under Section 7 of GPL version 3, you are granted additional | |
17 | // permissions described in the GCC Runtime Library Exception, version | |
18 | // 3.1, as published by the Free Software Foundation. | |
19 | ||
20 | // You should have received a copy of the GNU General Public License and | |
21 | // a copy of the GCC Runtime Library Exception along with this program; | |
22 | // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see | |
23 | // <http://www.gnu.org/licenses/>. | |
24 | ||
25 | /** @file experimental/internet | |
26 | * This is a TS C++ Library header. | |
3084625d | 27 | * @ingroup networking-ts |
e5989e71 JW |
28 | */ |
29 | ||
30 | #ifndef _GLIBCXX_EXPERIMENTAL_INTERNET | |
31 | #define _GLIBCXX_EXPERIMENTAL_INTERNET | |
32 | ||
33 | #pragma GCC system_header | |
34 | ||
35 | #if __cplusplus >= 201402L | |
36 | ||
37 | #include <experimental/netfwd> | |
82a0f2fd JW |
38 | #include <experimental/io_context> |
39 | #include <experimental/bits/net.h> | |
e5989e71 JW |
40 | #include <array> |
41 | #include <forward_list> | |
42 | #include <sstream> | |
e5989e71 | 43 | #include <cstdint> |
e5989e71 | 44 | #include <experimental/string_view> |
82a0f2fd JW |
45 | #ifdef _GLIBCXX_HAVE_UNISTD_H |
46 | # include <unistd.h> | |
47 | #endif | |
48 | #ifdef _GLIBCXX_HAVE_SYS_SOCKET_H | |
49 | # include <sys/socket.h> // AF_INET, AF_INET6, SOCK_DGRAM, SOCK_STREAM | |
50 | #endif | |
51 | #ifdef _GLIBCXX_HAVE_ARPA_INET_H | |
52 | # include <arpa/inet.h> // inet_ntop | |
53 | #endif | |
b5445359 AT |
54 | #ifdef _GLIBCXX_HAVE_NETINET_IN_H |
55 | # include <netinet/in.h> // IPPROTO_IP | |
56 | #endif | |
82a0f2fd JW |
57 | #ifdef _GLIBCXX_HAVE_NETINET_TCP_H |
58 | # include <netinet/tcp.h> // TCP_NODELAY | |
59 | #endif | |
60 | #ifdef _GLIBCXX_HAVE_NETDB_H | |
61 | # include <netdb.h> // getaddrinfo etc. | |
62 | #endif | |
e5989e71 JW |
63 | |
64 | namespace std _GLIBCXX_VISIBILITY(default) | |
65 | { | |
a70a4be9 | 66 | _GLIBCXX_BEGIN_NAMESPACE_VERSION |
e5989e71 JW |
67 | namespace experimental |
68 | { | |
69 | namespace net | |
70 | { | |
71 | inline namespace v1 | |
72 | { | |
73 | namespace ip | |
74 | { | |
e5989e71 | 75 | |
3084625d JW |
76 | /** @addtogroup networking-ts |
77 | * @{ | |
e5989e71 JW |
78 | */ |
79 | ||
82a0f2fd | 80 | #ifdef _GLIBCXX_HAVE_NETDB_H |
e5989e71 JW |
81 | /** Error codes for resolver errors. |
82 | * @{ | |
83 | */ | |
84 | ||
85 | enum class resolver_errc : int { | |
86 | host_not_found = EAI_NONAME, | |
87 | host_not_found_try_again = EAI_AGAIN, | |
88 | service_not_found = EAI_SERVICE | |
89 | }; | |
90 | ||
91 | /// Error category for resolver errors. | |
92 | inline const error_category& resolver_category() noexcept // TODO non-inline | |
93 | { | |
94 | struct __cat : error_category | |
95 | { | |
96 | const char* name() const noexcept { return "resolver"; } | |
97 | std::string message(int __e) const { return ::gai_strerror(__e); } | |
98 | virtual void __message(int) { } // TODO dual ABI XXX | |
99 | }; | |
100 | static __cat __c; | |
101 | return __c; | |
102 | } | |
103 | ||
104 | error_code make_error_code(resolver_errc __e) noexcept | |
105 | { return error_code(static_cast<int>(__e), resolver_category()); } | |
106 | ||
107 | error_condition make_error_condition(resolver_errc __e) noexcept | |
108 | { return error_condition(static_cast<int>(__e), resolver_category()); } | |
109 | ||
110 | /// @} | |
82a0f2fd | 111 | #endif |
e5989e71 | 112 | |
f26e72d8 JW |
113 | using port_type = uint_least16_t; ///< Type used for port numbers. |
114 | using scope_id_type = uint_least32_t; ///< Type used for IPv6 scope IDs. | |
e5989e71 JW |
115 | |
116 | /// Convenience alias for constraining allocators for strings. | |
117 | template<typename _Alloc> | |
118 | using __string_with | |
119 | = enable_if_t<std::is_same<typename _Alloc::value_type, char>::value, | |
120 | std::basic_string<char, std::char_traits<char>, _Alloc>>; | |
121 | ||
122 | /** Tag indicating conversion between IPv4 and IPv4-mapped IPv6 addresses. | |
123 | * @{ | |
124 | */ | |
125 | ||
126 | struct v4_mapped_t {}; | |
127 | constexpr v4_mapped_t v4_mapped; | |
128 | ||
f0b88346 | 129 | /// @} |
e5989e71 JW |
130 | |
131 | /// An IPv4 address. | |
132 | class address_v4 | |
133 | { | |
134 | public: | |
135 | // types: | |
f26e72d8 | 136 | using uint_type = uint_least32_t; |
e5989e71 JW |
137 | |
138 | struct bytes_type : array<unsigned char, 4> | |
139 | { | |
140 | template<typename... _Tp> | |
141 | explicit constexpr | |
142 | bytes_type(_Tp... __tp) | |
143 | : array<unsigned char, 4>{{static_cast<unsigned char>(__tp)...}} | |
144 | { | |
145 | #if UCHAR_MAX > 0xFF | |
146 | for (auto __b : *this) | |
147 | if (__b > 0xFF) | |
148 | __throw_out_of_range("invalid address_v4::bytes_type value"); | |
149 | #endif | |
150 | } | |
151 | }; | |
152 | ||
153 | // constructors: | |
154 | constexpr address_v4() noexcept : _M_addr(0) { } | |
155 | ||
156 | constexpr address_v4(const address_v4& a) noexcept = default; | |
157 | ||
158 | constexpr | |
159 | address_v4(const bytes_type& __b) | |
160 | : _M_addr((__b[0] << 24) | (__b[1] << 16) | (__b[2] << 8) | __b[3]) | |
161 | { } | |
162 | ||
163 | explicit constexpr | |
187fdaea | 164 | address_v4(uint_type __val) : _M_addr(_S_hton_32(__val)) |
e5989e71 JW |
165 | { |
166 | #if UINT_LEAST32_MAX > 0xFFFFFFFF | |
167 | if (__val > 0xFFFFFFFF) | |
168 | __throw_out_of_range("invalid address_v4::uint_type value"); | |
169 | #endif | |
170 | } | |
171 | ||
172 | // assignment: | |
173 | address_v4& operator=(const address_v4& a) noexcept = default; | |
174 | ||
175 | // members: | |
176 | constexpr bool is_unspecified() const noexcept { return to_uint() == 0; } | |
177 | ||
178 | constexpr bool | |
179 | is_loopback() const noexcept | |
180 | { return (to_uint() & 0xFF000000) == 0x7F000000; } | |
181 | ||
182 | constexpr bool | |
183 | is_multicast() const noexcept | |
184 | { return (to_uint() & 0xF0000000) == 0xE0000000; } | |
185 | ||
186 | constexpr bytes_type | |
187 | to_bytes() const noexcept | |
188 | { | |
189 | return bytes_type{ | |
190 | (_M_addr >> 24) & 0xFF, | |
191 | (_M_addr >> 16) & 0xFF, | |
192 | (_M_addr >> 8) & 0xFF, | |
193 | _M_addr & 0xFF | |
194 | }; | |
195 | } | |
196 | ||
187fdaea JW |
197 | constexpr uint_type |
198 | to_uint() const noexcept { return _S_ntoh_32(_M_addr); } | |
e5989e71 | 199 | |
82a0f2fd | 200 | #ifdef _GLIBCXX_HAVE_ARPA_INET_H |
e5989e71 JW |
201 | template<typename _Allocator = allocator<char>> |
202 | __string_with<_Allocator> | |
203 | to_string(const _Allocator& __a = _Allocator()) const | |
204 | { | |
205 | __string_with<_Allocator> __str(__a); | |
206 | __str.resize(INET6_ADDRSTRLEN); | |
207 | if (inet_ntop(AF_INET, &_M_addr, &__str.front(), __str.size())) | |
208 | __str.erase(__str.find('\0')); | |
209 | else | |
210 | __str.resize(0); | |
211 | return __str; | |
212 | } | |
82a0f2fd | 213 | #endif |
e5989e71 JW |
214 | |
215 | // static members: | |
216 | static constexpr address_v4 any() noexcept { return address_v4{}; } | |
217 | ||
218 | static constexpr | |
219 | address_v4 loopback() noexcept { return address_v4{0x7F000001}; } | |
220 | ||
221 | static constexpr | |
222 | address_v4 broadcast() noexcept { return address_v4{0xFFFFFFFF}; } | |
223 | ||
224 | private: | |
225 | template<typename _InternetProtocol> | |
226 | friend class basic_endpoint; | |
227 | ||
228 | friend address_v4 make_address_v4(const char*, error_code&) noexcept; | |
229 | ||
230 | #if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ | |
187fdaea JW |
231 | static constexpr uint16_t _S_hton_16(uint16_t __h) { return __h; } |
232 | static constexpr uint16_t _S_ntoh_16(uint16_t __n) { return __n; } | |
233 | static constexpr uint32_t _S_hton_32(uint32_t __h) { return __h; } | |
234 | static constexpr uint32_t _S_ntoh_32(uint32_t __n) { return __n; } | |
e5989e71 JW |
235 | #else |
236 | static constexpr uint16_t | |
187fdaea | 237 | _S_hton_16(uint16_t __h) { return __builtin_bswap16(__h); } |
e5989e71 JW |
238 | |
239 | static constexpr uint16_t | |
187fdaea | 240 | _S_ntoh_16(uint16_t __n) { return __builtin_bswap16(__n); } |
e5989e71 JW |
241 | |
242 | static constexpr uint32_t | |
187fdaea | 243 | _S_hton_32(uint32_t __h) { return __builtin_bswap32(__h); } |
e5989e71 JW |
244 | |
245 | static constexpr uint32_t | |
187fdaea | 246 | _S_ntoh_32(uint32_t __n) { return __builtin_bswap32(__n); } |
e5989e71 JW |
247 | #endif |
248 | ||
249 | in_addr_t _M_addr; // network byte order | |
250 | }; | |
251 | ||
252 | /// An IPv6 address. | |
253 | class address_v6 | |
254 | { | |
255 | public: | |
256 | // types: | |
257 | struct bytes_type : array<unsigned char, 16> | |
258 | { | |
259 | template<typename... _Tp> explicit constexpr bytes_type(_Tp... __t) | |
260 | : array<unsigned char, 16>{{static_cast<unsigned char>(__t)...}} { } | |
261 | }; | |
262 | ||
263 | // constructors: | |
264 | constexpr address_v6() noexcept : _M_bytes(), _M_scope_id() { } | |
265 | ||
266 | constexpr address_v6(const address_v6& __a) noexcept = default; | |
267 | ||
268 | constexpr | |
269 | address_v6(const bytes_type& __bytes, scope_id_type __scope = 0) | |
270 | : _M_bytes(__bytes), _M_scope_id(__scope) | |
271 | { } | |
272 | ||
273 | // assignment: | |
274 | address_v6& operator=(const address_v6& __a) noexcept = default; | |
275 | ||
276 | // members: | |
277 | void scope_id(scope_id_type __id) noexcept { _M_scope_id = __id; } | |
278 | ||
279 | constexpr scope_id_type scope_id() const noexcept { return _M_scope_id; } | |
280 | ||
281 | constexpr bool | |
282 | is_unspecified() const noexcept | |
283 | { | |
284 | for (int __i = 0; __i < 16; ++__i) | |
285 | if (_M_bytes[__i] != 0x00) | |
286 | return false; | |
287 | return _M_scope_id == 0; | |
288 | } | |
289 | ||
290 | constexpr bool | |
291 | is_loopback() const noexcept | |
292 | { | |
293 | for (int __i = 0; __i < 15; ++__i) | |
294 | if (_M_bytes[__i] != 0x00) | |
295 | return false; | |
296 | return _M_bytes[15] == 0x01 && _M_scope_id == 0; | |
297 | } | |
298 | ||
299 | constexpr bool | |
300 | is_multicast() const noexcept { return _M_bytes[0] == 0xFF; } | |
301 | ||
302 | constexpr bool | |
303 | is_link_local() const noexcept | |
304 | { return _M_bytes[0] == 0xFE && (_M_bytes[1] & 0xC0) == 0x80; } | |
305 | ||
306 | constexpr bool | |
307 | is_site_local() const noexcept | |
308 | { return _M_bytes[0] == 0xFE && (_M_bytes[1] & 0xC0) == 0xC0; } | |
309 | ||
310 | constexpr bool | |
311 | is_v4_mapped() const noexcept | |
312 | { | |
313 | const bytes_type& __b = _M_bytes; | |
314 | return __b[0] == 0 && __b[1] == 0 && __b[ 2] == 0 && __b[ 3] == 0 | |
315 | && __b[4] == 0 && __b[5] == 0 && __b[ 6] == 0 && __b[ 7] == 0 | |
316 | && __b[8] == 0 && __b[9] == 0 && __b[10] == 0xFF && __b[11] == 0xFF; | |
317 | } | |
318 | ||
319 | constexpr bool | |
320 | is_multicast_node_local() const noexcept | |
321 | { return is_multicast() && (_M_bytes[1] & 0x0F) == 0x01; } | |
322 | ||
323 | constexpr bool | |
324 | is_multicast_link_local() const noexcept | |
325 | { return is_multicast() && (_M_bytes[1] & 0x0F) == 0x02; } | |
326 | ||
327 | constexpr bool | |
328 | is_multicast_site_local() const noexcept | |
329 | { return is_multicast() && (_M_bytes[1] & 0x0F) == 0x05; } | |
330 | ||
331 | constexpr bool | |
332 | is_multicast_org_local() const noexcept | |
333 | { return is_multicast() && (_M_bytes[1] & 0x0F) == 0x08; } | |
334 | ||
335 | constexpr bool | |
336 | is_multicast_global() const noexcept | |
337 | { return is_multicast() && (_M_bytes[1] & 0x0F) == 0x0b; } | |
338 | ||
339 | constexpr bytes_type to_bytes() const noexcept { return _M_bytes; } | |
340 | ||
82a0f2fd | 341 | #ifdef _GLIBCXX_HAVE_ARPA_INET_H |
e5989e71 JW |
342 | template<typename _Allocator = allocator<char>> |
343 | __string_with<_Allocator> | |
344 | to_string(const _Allocator& __a = _Allocator()) const | |
345 | { | |
346 | __string_with<_Allocator> __str(__a); | |
d1a821b9 JW |
347 | __str.resize(INET6_ADDRSTRLEN + (_M_scope_id ? 11 : 0)); |
348 | char* const __p = &__str.front(); | |
349 | if (inet_ntop(AF_INET6, &_M_bytes, __p, __str.size())) | |
350 | { | |
351 | auto __end = __str.find('\0'); | |
352 | if (unsigned long __scope = _M_scope_id) | |
353 | { | |
354 | __end += | |
355 | #if _GLIBCXX_USE_C99_STDIO | |
356 | __builtin_snprintf(__p + __end, __str.size() - __end, | |
357 | "%%%lu", __scope); | |
358 | #else | |
359 | __builtin_sprintf(__p + __end, "%%%lu", __scope); | |
360 | #endif | |
361 | } | |
362 | __str.erase(__end); | |
363 | } | |
e5989e71 JW |
364 | else |
365 | __str.resize(0); | |
366 | return __str; | |
367 | } | |
82a0f2fd | 368 | #endif |
e5989e71 JW |
369 | |
370 | // static members: | |
970ba719 | 371 | |
e5989e71 JW |
372 | static constexpr address_v6 |
373 | any() noexcept | |
374 | { | |
970ba719 | 375 | return {}; |
e5989e71 JW |
376 | } |
377 | ||
378 | static constexpr address_v6 | |
379 | loopback() noexcept | |
380 | { | |
d1a821b9 | 381 | return {bytes_type{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1}}; |
e5989e71 JW |
382 | } |
383 | ||
384 | private: | |
385 | template<typename _InternetProtocol> | |
386 | friend class basic_endpoint; | |
387 | ||
388 | friend constexpr bool | |
389 | operator==(const address_v6&, const address_v6&) noexcept; | |
390 | ||
391 | friend constexpr bool | |
392 | operator< (const address_v6&, const address_v6&) noexcept; | |
393 | ||
394 | bytes_type _M_bytes; | |
395 | scope_id_type _M_scope_id; | |
396 | }; | |
397 | ||
398 | /// Exception type thrown on misuse of IPv4 addresses as IPv6 or vice versa. | |
399 | class bad_address_cast : public bad_cast | |
400 | { | |
401 | public: | |
402 | bad_address_cast() { } | |
403 | ||
404 | const char* what() const noexcept { return "bad address cast"; } | |
405 | }; | |
406 | ||
407 | /// An IPv4 or IPv6 address. | |
408 | class address | |
409 | { | |
410 | public: | |
411 | // constructors: | |
412 | constexpr address() noexcept : _M_v4(), _M_is_v4(true) { } | |
413 | ||
414 | constexpr | |
415 | address(const address& __a) noexcept : _M_uninit(), _M_is_v4(__a._M_is_v4) | |
416 | { | |
417 | if (_M_is_v4) | |
418 | ::new (std::addressof(_M_v4)) address_v4(__a.to_v4()); | |
419 | else | |
420 | ::new (std::addressof(_M_v6)) address_v6(__a.to_v6()); | |
421 | } | |
422 | ||
423 | constexpr | |
424 | address(const address_v4& __a) noexcept : _M_v4(__a), _M_is_v4(true) { } | |
425 | ||
426 | constexpr | |
427 | address(const address_v6& __a) noexcept : _M_v6(__a), _M_is_v4(false) { } | |
428 | ||
429 | // assignment: | |
430 | address& | |
431 | operator=(const address& __a) noexcept | |
432 | { | |
433 | if (__a._M_is_v4) | |
434 | *this = __a.to_v4(); | |
435 | else | |
436 | *this = __a.to_v6(); | |
437 | return *this; | |
438 | } | |
439 | ||
440 | address& | |
441 | operator=(const address_v4& __a) noexcept | |
442 | { | |
443 | ::new (std::addressof(_M_v4)) address_v4(__a); | |
444 | _M_is_v4 = true; | |
445 | return *this; | |
446 | } | |
447 | ||
448 | address& | |
449 | operator=(const address_v6& __a) noexcept | |
450 | { | |
451 | ::new (std::addressof(_M_v6)) address_v6(__a); | |
452 | _M_is_v4 = false; | |
453 | return *this; | |
454 | } | |
455 | ||
456 | // members: | |
457 | ||
458 | constexpr bool is_v4() const noexcept { return _M_is_v4; } | |
459 | constexpr bool is_v6() const noexcept { return !_M_is_v4; } | |
460 | ||
461 | constexpr address_v4 | |
462 | to_v4() const | |
463 | { | |
464 | if (!is_v4()) | |
465 | _GLIBCXX_THROW_OR_ABORT(bad_address_cast()); | |
466 | return _M_v4; | |
467 | } | |
468 | ||
469 | constexpr address_v6 | |
470 | to_v6() const | |
471 | { | |
472 | if (!is_v6()) | |
473 | _GLIBCXX_THROW_OR_ABORT(bad_address_cast()); | |
474 | return _M_v6; | |
475 | } | |
476 | ||
477 | constexpr bool | |
478 | is_unspecified() const noexcept | |
479 | { return _M_is_v4 ? _M_v4.is_unspecified() : _M_v6.is_unspecified(); } | |
480 | ||
481 | constexpr bool | |
482 | is_loopback() const noexcept | |
483 | { return _M_is_v4 ? _M_v4.is_loopback() : _M_v6.is_loopback(); } | |
484 | ||
485 | constexpr bool | |
486 | is_multicast() const noexcept | |
487 | { return _M_is_v4 ? _M_v4.is_multicast() : _M_v6.is_multicast(); } | |
488 | ||
489 | template<typename _Allocator = allocator<char>> | |
490 | __string_with<_Allocator> | |
491 | to_string(const _Allocator& __a = _Allocator()) const | |
492 | { | |
493 | if (_M_is_v4) | |
494 | return to_v4().to_string(__a); | |
495 | return to_v6().to_string(__a); | |
496 | } | |
497 | ||
498 | private: | |
499 | template<typename _InternetProtocol> | |
500 | friend class basic_endpoint; | |
501 | ||
502 | friend constexpr bool | |
503 | operator==(const address&, const address&) noexcept; | |
504 | ||
505 | friend constexpr bool | |
506 | operator<(const address&, const address&) noexcept; | |
507 | ||
508 | union { | |
509 | address_v4 _M_v4; | |
510 | address_v6 _M_v6; | |
511 | bool _M_uninit; | |
512 | }; | |
513 | bool _M_is_v4; | |
514 | }; | |
515 | ||
516 | /** ip::address_v4 comparisons | |
517 | * @{ | |
518 | */ | |
519 | ||
520 | constexpr bool | |
521 | operator==(const address_v4& __a, const address_v4& __b) noexcept | |
522 | { return __a.to_uint() == __b.to_uint(); } | |
523 | ||
524 | constexpr bool | |
525 | operator!=(const address_v4& __a, const address_v4& __b) noexcept | |
526 | { return !(__a == __b); } | |
527 | ||
528 | constexpr bool | |
529 | operator< (const address_v4& __a, const address_v4& __b) noexcept | |
530 | { return __a.to_uint() < __b.to_uint(); } | |
531 | ||
532 | constexpr bool | |
533 | operator> (const address_v4& __a, const address_v4& __b) noexcept | |
534 | { return __b < __a; } | |
535 | ||
536 | constexpr bool | |
537 | operator<=(const address_v4& __a, const address_v4& __b) noexcept | |
538 | { return !(__b < __a); } | |
539 | ||
540 | constexpr bool | |
541 | operator>=(const address_v4& __a, const address_v4& __b) noexcept | |
542 | { return !(__a < __b); } | |
543 | ||
f0b88346 | 544 | /// @} |
e5989e71 JW |
545 | |
546 | /** ip::address_v6 comparisons | |
547 | * @{ | |
548 | */ | |
549 | ||
550 | constexpr bool | |
551 | operator==(const address_v6& __a, const address_v6& __b) noexcept | |
552 | { | |
553 | const auto& __aa = __a._M_bytes; | |
554 | const auto& __bb = __b._M_bytes; | |
555 | int __i = 0; | |
d5f7e049 | 556 | for (; __i < 16 && __aa[__i] == __bb[__i]; ++__i) |
e5989e71 JW |
557 | ; |
558 | return __i == 16 ? __a.scope_id() == __b.scope_id() : false; | |
559 | } | |
560 | ||
561 | constexpr bool | |
562 | operator!=(const address_v6& __a, const address_v6& __b) noexcept | |
563 | { return !(__a == __b); } | |
564 | ||
565 | constexpr bool | |
566 | operator< (const address_v6& __a, const address_v6& __b) noexcept | |
567 | { | |
568 | const auto& __aa = __a._M_bytes; | |
569 | const auto& __bb = __b._M_bytes; | |
570 | int __i = 0; | |
d5f7e049 | 571 | for (; __i < 16 && __aa[__i] == __bb[__i]; ++__i) |
e5989e71 JW |
572 | ; |
573 | return __i == 16 ? __a.scope_id() < __b.scope_id() : __aa[__i] < __bb[__i]; | |
574 | } | |
575 | ||
576 | constexpr bool | |
577 | operator> (const address_v6& __a, const address_v6& __b) noexcept | |
578 | { return __b < __a; } | |
579 | ||
580 | constexpr bool | |
581 | operator<=(const address_v6& __a, const address_v6& __b) noexcept | |
582 | { return !(__b < __a); } | |
583 | ||
584 | constexpr bool | |
585 | operator>=(const address_v6& __a, const address_v6& __b) noexcept | |
586 | { return !(__a < __b); } | |
587 | ||
f0b88346 | 588 | /// @} |
e5989e71 JW |
589 | |
590 | /** ip::address comparisons | |
591 | * @{ | |
592 | */ | |
593 | ||
594 | constexpr bool | |
595 | operator==(const address& __a, const address& __b) noexcept | |
596 | { | |
597 | if (__a.is_v4()) | |
598 | return __b.is_v4() ? __a._M_v4 == __b._M_v4 : false; | |
599 | return __b.is_v4() ? false : __a._M_v6 == __b._M_v6; | |
600 | } | |
601 | ||
602 | constexpr bool | |
603 | operator!=(const address& __a, const address& __b) noexcept | |
604 | { return !(__a == __b); } | |
605 | ||
606 | constexpr bool | |
607 | operator< (const address& __a, const address& __b) noexcept | |
608 | { | |
609 | if (__a.is_v4()) | |
610 | return __b.is_v4() ? __a._M_v4 < __b._M_v4 : true; | |
611 | return __b.is_v4() ? false : __a._M_v6 < __b._M_v6; | |
612 | } | |
613 | ||
614 | constexpr bool | |
615 | operator> (const address& __a, const address& __b) noexcept | |
616 | { return __b < __a; } | |
617 | ||
618 | constexpr bool | |
619 | operator<=(const address& __a, const address& __b) noexcept | |
620 | { return !(__b < __a); } | |
621 | ||
622 | constexpr bool | |
623 | operator>=(const address& __a, const address& __b) noexcept | |
624 | { return !(__a < __b); } | |
625 | ||
f0b88346 | 626 | /// @} |
e5989e71 JW |
627 | |
628 | /** ip::address_v4 creation | |
629 | * @{ | |
630 | */ | |
631 | ||
632 | constexpr address_v4 | |
633 | make_address_v4(const address_v4::bytes_type& __b) | |
634 | { return address_v4{__b}; } | |
635 | ||
636 | constexpr address_v4 | |
637 | make_address_v4(address_v4::uint_type __val) | |
638 | { return address_v4{__val}; } | |
639 | ||
640 | constexpr address_v4 | |
641 | make_address_v4(v4_mapped_t, const address_v6& __a) | |
642 | { | |
643 | if (!__a.is_v4_mapped()) | |
644 | _GLIBCXX_THROW_OR_ABORT(bad_address_cast()); | |
645 | ||
646 | const auto __v6b = __a.to_bytes(); | |
647 | return address_v4::bytes_type(__v6b[12], __v6b[13], __v6b[14], __v6b[15]); | |
648 | } | |
649 | ||
650 | inline address_v4 | |
651 | make_address_v4(const char* __str, error_code& __ec) noexcept | |
652 | { | |
653 | address_v4 __a; | |
654 | const int __res = ::inet_pton(AF_INET, __str, &__a._M_addr); | |
655 | if (__res == 1) | |
656 | { | |
657 | __ec.clear(); | |
658 | return __a; | |
659 | } | |
660 | if (__res == 0) | |
661 | __ec = std::make_error_code(std::errc::invalid_argument); | |
662 | else | |
663 | __ec.assign(errno, generic_category()); | |
664 | return {}; | |
665 | } | |
666 | ||
667 | inline address_v4 | |
668 | make_address_v4(const char* __str) | |
669 | { return make_address_v4(__str, __throw_on_error{"make_address_v4"}); } | |
670 | ||
671 | inline address_v4 | |
672 | make_address_v4(const string& __str, error_code& __ec) noexcept | |
673 | { return make_address_v4(__str.c_str(), __ec); } | |
674 | ||
675 | inline address_v4 | |
676 | make_address_v4(const string& __str) | |
677 | { return make_address_v4(__str.c_str()); } | |
678 | ||
679 | inline address_v4 | |
680 | make_address_v4(string_view __str, error_code& __ec) noexcept | |
681 | { | |
682 | char __buf[INET_ADDRSTRLEN]; | |
683 | auto __len = __str.copy(__buf, sizeof(__buf)); | |
684 | if (__len == sizeof(__buf)) | |
685 | { | |
686 | __ec = std::make_error_code(std::errc::invalid_argument); | |
687 | return {}; | |
688 | } | |
689 | __ec.clear(); | |
690 | __buf[__len] = '\0'; | |
691 | return make_address_v4(__buf, __ec); | |
692 | } | |
693 | ||
694 | inline address_v4 | |
695 | make_address_v4(string_view __str) | |
696 | { return make_address_v4(__str, __throw_on_error{"make_address_v4"}); } | |
697 | ||
f0b88346 | 698 | /// @} |
e5989e71 JW |
699 | |
700 | /** ip::address_v6 creation | |
701 | * @{ | |
702 | */ | |
703 | ||
704 | constexpr address_v6 | |
705 | make_address_v6(const address_v6::bytes_type& __b, scope_id_type __scope = 0) | |
706 | { return address_v6{__b, __scope}; } | |
707 | ||
708 | constexpr address_v6 | |
709 | make_address_v6(v4_mapped_t, const address_v4& __a) noexcept | |
710 | { | |
711 | const address_v4::bytes_type __v4b = __a.to_bytes(); | |
712 | address_v6::bytes_type __v6b(0, 0, 0, 0, 0, 0, 0, 0, | |
713 | 0, 0, 0xFF, 0xFF, | |
714 | __v4b[0], __v4b[1], __v4b[2], __v4b[3]); | |
715 | return address_v6(__v6b); | |
716 | } | |
717 | ||
718 | inline address_v6 | |
719 | __make_address_v6(const char* __addr, const char* __scope, error_code& __ec) | |
720 | { | |
721 | address_v6::bytes_type __b; | |
722 | int __res = ::inet_pton(AF_INET6, __addr, __b.data()); | |
723 | if (__res == 1) | |
724 | { | |
725 | __ec.clear(); | |
726 | if (!__scope) | |
727 | { | |
728 | return { __b }; | |
729 | } | |
730 | ||
731 | char* __eptr; | |
732 | unsigned long __val = std::strtoul(__scope, &__eptr, 10); | |
733 | if (__eptr != __scope && !*__eptr | |
734 | && __val <= numeric_limits<scope_id_type>::max()) | |
735 | { | |
736 | return { __b, static_cast<scope_id_type>(__val) }; | |
737 | } | |
738 | __ec = std::make_error_code(std::errc::invalid_argument); | |
739 | } | |
740 | else if (__res == 0) | |
741 | __ec = std::make_error_code(std::errc::invalid_argument); | |
742 | else | |
743 | __ec.assign(errno, generic_category()); | |
744 | return {}; | |
745 | } | |
746 | ||
747 | inline address_v6 | |
748 | make_address_v6(const char* __str, error_code& __ec) noexcept | |
749 | { | |
82a0f2fd | 750 | auto __p = __builtin_strchr(__str, '%'); |
e5989e71 JW |
751 | if (__p == nullptr) |
752 | return __make_address_v6(__str, nullptr, __ec); | |
753 | char __buf[64]; | |
754 | char* __out = __buf; | |
755 | bool __skip_leading_zero = true; | |
756 | while (__str < __p && __out < std::end(__buf)) | |
757 | { | |
758 | if (!__skip_leading_zero || *__str != '0') | |
759 | { | |
760 | if (*__str == ':' || *__str == '.') | |
761 | __skip_leading_zero = true; | |
762 | else | |
763 | __skip_leading_zero = false; | |
764 | *__out = *__str; | |
765 | } | |
766 | __str++; | |
767 | } | |
768 | if (__out == std::end(__buf)) | |
970ba719 JW |
769 | { |
770 | __ec = std::make_error_code(std::errc::invalid_argument); | |
771 | return {}; | |
772 | } | |
e5989e71 JW |
773 | else |
774 | { | |
775 | *__out = '\0'; | |
776 | return __make_address_v6(__buf, __p + 1, __ec); | |
777 | } | |
778 | } | |
779 | ||
780 | inline address_v6 | |
781 | make_address_v6(const char* __str) | |
782 | { return make_address_v6(__str, __throw_on_error{"make_address_v6"}); } | |
783 | ||
784 | inline address_v6 | |
785 | make_address_v6(const string& __str, error_code& __ec) noexcept | |
786 | { | |
787 | auto __pos = __str.find('%'); | |
788 | if (__pos == string::npos) | |
789 | return __make_address_v6(__str.c_str(), nullptr, __ec); | |
790 | char __buf[64]; | |
791 | char* __out = __buf; | |
792 | bool __skip_leading_zero = true; | |
793 | size_t __n = 0; | |
794 | while (__n < __pos && __out < std::end(__buf)) | |
795 | { | |
796 | if (!__skip_leading_zero || __str[__n] != '0') | |
797 | { | |
798 | if (__str[__n] == ':' || __str[__n] == '.') | |
799 | __skip_leading_zero = true; | |
800 | else | |
801 | __skip_leading_zero = false; | |
802 | *__out = __str[__n]; | |
803 | } | |
804 | __n++; | |
805 | } | |
806 | if (__out == std::end(__buf)) | |
970ba719 JW |
807 | { |
808 | __ec = std::make_error_code(std::errc::invalid_argument); | |
809 | return {}; | |
810 | } | |
e5989e71 JW |
811 | else |
812 | { | |
813 | *__out = '\0'; | |
814 | return __make_address_v6(__buf, __str.c_str() + __pos + 1, __ec); | |
815 | } | |
816 | } | |
817 | ||
818 | inline address_v6 | |
819 | make_address_v6(const string& __str) | |
820 | { return make_address_v6(__str, __throw_on_error{"make_address_v6"}); } | |
821 | ||
822 | inline address_v6 | |
823 | make_address_v6(string_view __str, error_code& __ec) noexcept | |
824 | { | |
825 | char __buf[64]; | |
826 | char* __out = __buf; | |
827 | char* __scope = nullptr; | |
828 | bool __skip_leading_zero = true; | |
829 | size_t __n = 0; | |
830 | while (__n < __str.length() && __out < std::end(__buf)) | |
831 | { | |
832 | if (__str[__n] == '%') | |
833 | { | |
834 | if (__scope) | |
835 | __out = std::end(__buf); | |
836 | else | |
837 | { | |
838 | *__out = '\0'; | |
839 | __scope = ++__out; | |
840 | __skip_leading_zero = true; | |
841 | } | |
842 | } | |
843 | else if (!__skip_leading_zero || __str[__n] != '0') | |
844 | { | |
845 | if (__str[__n] == ':' || __str[__n] == '.') | |
846 | __skip_leading_zero = true; | |
847 | else | |
848 | __skip_leading_zero = false; | |
849 | *__out = __str[__n]; | |
850 | __out++; | |
851 | } | |
852 | __n++; | |
853 | } | |
854 | if (__out == std::end(__buf)) | |
970ba719 JW |
855 | { |
856 | __ec = std::make_error_code(std::errc::invalid_argument); | |
857 | return {}; | |
858 | } | |
e5989e71 JW |
859 | else |
860 | { | |
861 | *__out = '\0'; | |
862 | return __make_address_v6(__buf, __scope, __ec); | |
863 | } | |
864 | } | |
865 | ||
866 | inline address_v6 | |
867 | make_address_v6(string_view __str) | |
868 | { return make_address_v6(__str, __throw_on_error{"make_address_v6"}); } | |
869 | ||
f0b88346 | 870 | /// @} |
e5989e71 JW |
871 | |
872 | /** ip::address creation | |
873 | * @{ | |
874 | */ | |
875 | ||
876 | inline address | |
877 | make_address(const char* __str, error_code& __ec) noexcept | |
878 | { | |
879 | address __a; | |
880 | address_v6 __v6a = make_address_v6(__str, __ec); | |
881 | if (!__ec) | |
882 | __a = __v6a; | |
883 | else | |
884 | { | |
885 | address_v4 __v4a = make_address_v4(__str, __ec); | |
886 | if (!__ec) | |
887 | __a = __v4a; | |
888 | } | |
889 | return __a; | |
890 | } | |
891 | ||
892 | inline address | |
893 | make_address(const char* __str) | |
894 | { return make_address(__str, __throw_on_error{"make_address"}); } | |
895 | ||
896 | inline address | |
897 | make_address(const string& __str, error_code& __ec) noexcept; // TODO | |
898 | ||
899 | inline address | |
900 | make_address(const string& __str) | |
901 | { return make_address(__str, __throw_on_error{"make_address"}); } | |
902 | ||
903 | inline address | |
904 | make_address(string_view __str, error_code& __ec) noexcept | |
905 | { | |
906 | if (__str.rfind('\0') != string_view::npos) | |
907 | return make_address(__str.data(), __ec); | |
908 | return make_address(__str.to_string(), __ec); // TODO don't allocate | |
909 | } | |
910 | ||
911 | inline address | |
912 | make_address(string_view __str) | |
913 | { return make_address(__str, __throw_on_error{"make_address"}); } | |
914 | ||
f0b88346 | 915 | /// @} |
e5989e71 JW |
916 | |
917 | /// ip::address I/O | |
918 | template<typename _CharT, typename _Traits> | |
919 | inline basic_ostream<_CharT, _Traits>& | |
920 | operator<<(basic_ostream<_CharT, _Traits>& __os, const address& __a) | |
921 | { return __os << __a.to_string(); } | |
922 | ||
923 | /// ip::address_v4 I/O | |
924 | template<typename _CharT, typename _Traits> | |
925 | inline basic_ostream<_CharT, _Traits>& | |
926 | operator<<(basic_ostream<_CharT, _Traits>& __os, const address_v4& __a) | |
927 | { return __os << __a.to_string(); } | |
928 | ||
929 | /// ip::address_v6 I/O | |
930 | template<typename _CharT, typename _Traits> | |
931 | inline basic_ostream<_CharT, _Traits>& | |
932 | operator<<(basic_ostream<_CharT, _Traits>& __os, const address_v6& __a) | |
933 | { return __os << __a.to_string(); } | |
934 | ||
935 | template<typename> class basic_address_iterator; // not defined | |
936 | ||
937 | template<> class basic_address_iterator<address_v4> | |
938 | { | |
939 | public: | |
940 | // types: | |
f26e72d8 JW |
941 | using value_type = address_v4; |
942 | using difference_type = ptrdiff_t; | |
943 | using pointer = const address_v4*; | |
944 | using reference = const address_v4&; | |
945 | using iterator_category = input_iterator_tag; | |
e5989e71 JW |
946 | |
947 | // constructors: | |
948 | basic_address_iterator(const address_v4& __a) noexcept | |
949 | : _M_address(__a) { } | |
950 | ||
951 | // members: | |
952 | reference operator*() const noexcept { return _M_address; } | |
953 | pointer operator->() const noexcept { return &_M_address; } | |
954 | ||
955 | basic_address_iterator& | |
956 | operator++() noexcept | |
957 | { | |
958 | _M_address = value_type(_M_address.to_uint() + 1); | |
959 | return *this; | |
960 | } | |
961 | ||
962 | basic_address_iterator operator++(int) noexcept | |
963 | { | |
964 | auto __tmp = *this; | |
965 | ++*this; | |
966 | return __tmp; | |
967 | } | |
968 | ||
969 | basic_address_iterator& operator--() noexcept | |
970 | { | |
971 | _M_address = value_type(_M_address.to_uint() - 1); | |
972 | return *this; | |
973 | } | |
974 | ||
975 | basic_address_iterator | |
976 | operator--(int) noexcept | |
977 | { | |
978 | auto __tmp = *this; | |
979 | --*this; | |
980 | return __tmp; | |
981 | } | |
982 | ||
983 | bool | |
984 | operator==(const basic_address_iterator& __rhs) const noexcept | |
985 | { return _M_address == __rhs._M_address; } | |
986 | ||
987 | bool | |
988 | operator!=(const basic_address_iterator& __rhs) const noexcept | |
989 | { return _M_address != __rhs._M_address; } | |
990 | ||
991 | private: | |
992 | address_v4 _M_address; | |
993 | }; | |
994 | ||
f26e72d8 | 995 | using address_v4_iterator = basic_address_iterator<address_v4>; |
e5989e71 JW |
996 | |
997 | template<> class basic_address_iterator<address_v6> | |
998 | { | |
999 | public: | |
1000 | // types: | |
f26e72d8 JW |
1001 | using value_type = address_v6; |
1002 | using difference_type = ptrdiff_t; | |
1003 | using pointer = const address_v6*; | |
1004 | using reference = const address_v6&; | |
1005 | using iterator_category = input_iterator_tag; | |
e5989e71 JW |
1006 | |
1007 | // constructors: | |
1008 | basic_address_iterator(const address_v6& __a) noexcept | |
1009 | : _M_address(__a) { } | |
1010 | ||
1011 | // members: | |
1012 | reference operator*() const noexcept { return _M_address; } | |
1013 | pointer operator->() const noexcept { return &_M_address; } | |
1014 | ||
1015 | basic_address_iterator& | |
1016 | operator++() noexcept; // TODO | |
1017 | ||
1018 | basic_address_iterator | |
1019 | operator++(int) noexcept | |
1020 | { | |
1021 | auto __tmp = *this; | |
1022 | ++*this; | |
1023 | return __tmp; | |
1024 | } | |
1025 | ||
1026 | basic_address_iterator& | |
1027 | operator--() noexcept; // TODO | |
1028 | ||
1029 | basic_address_iterator | |
1030 | operator--(int) noexcept | |
1031 | { | |
1032 | auto __tmp = *this; | |
1033 | --*this; | |
1034 | return __tmp; | |
1035 | } | |
1036 | ||
1037 | bool | |
1038 | operator==(const basic_address_iterator& __rhs) const noexcept | |
1039 | { return _M_address == __rhs._M_address; } | |
1040 | ||
1041 | bool | |
1042 | operator!=(const basic_address_iterator& __rhs) const noexcept | |
1043 | { return _M_address != __rhs._M_address; } | |
1044 | ||
1045 | private: | |
1046 | address_v6 _M_address; | |
1047 | }; | |
1048 | ||
f26e72d8 | 1049 | using address_v6_iterator = basic_address_iterator<address_v6>; |
e5989e71 JW |
1050 | |
1051 | template<typename> class basic_address_range; // not defined | |
1052 | ||
1053 | /** An IPv6 address range. | |
1054 | * @{ | |
1055 | */ | |
1056 | ||
1057 | template<> class basic_address_range<address_v4> | |
1058 | { | |
1059 | public: | |
1060 | // types: | |
1061 | ||
f26e72d8 | 1062 | using iterator = basic_address_iterator<address_v4>; |
e5989e71 JW |
1063 | |
1064 | // constructors: | |
1065 | ||
1066 | basic_address_range() noexcept : _M_begin({}), _M_end({}) { } | |
1067 | ||
1068 | basic_address_range(const address_v4& __first, | |
1069 | const address_v4& __last) noexcept | |
1070 | : _M_begin(__first), _M_end(__last) { } | |
1071 | ||
1072 | // members: | |
1073 | ||
1074 | iterator begin() const noexcept { return _M_begin; } | |
1075 | iterator end() const noexcept { return _M_end; } | |
d715f554 | 1076 | _GLIBCXX_NODISCARD bool empty() const noexcept { return _M_begin == _M_end; } |
e5989e71 JW |
1077 | |
1078 | size_t | |
1079 | size() const noexcept { return _M_end->to_uint() - _M_begin->to_uint(); } | |
1080 | ||
1081 | iterator | |
1082 | find(const address_v4& __addr) const noexcept | |
1083 | { | |
1084 | if (*_M_begin <= __addr && __addr < *_M_end) | |
1085 | return iterator{__addr}; | |
1086 | return end(); | |
1087 | } | |
1088 | ||
1089 | private: | |
1090 | iterator _M_begin; | |
1091 | iterator _M_end; | |
1092 | }; | |
1093 | ||
f26e72d8 | 1094 | using address_v4_range = basic_address_range<address_v4>; |
e5989e71 | 1095 | |
f0b88346 | 1096 | /// @} |
e5989e71 JW |
1097 | |
1098 | /** An IPv6 address range. | |
1099 | * @{ | |
1100 | */ | |
1101 | ||
1102 | template<> class basic_address_range<address_v6> | |
1103 | { | |
1104 | public: | |
1105 | // types: | |
1106 | ||
f26e72d8 | 1107 | using iterator = basic_address_iterator<address_v6>; |
e5989e71 JW |
1108 | |
1109 | // constructors: | |
1110 | ||
1111 | basic_address_range() noexcept : _M_begin({}), _M_end({}) { } | |
1112 | basic_address_range(const address_v6& __first, | |
1113 | const address_v6& __last) noexcept | |
1114 | : _M_begin(__first), _M_end(__last) { } | |
1115 | ||
1116 | // members: | |
1117 | ||
1118 | iterator begin() const noexcept { return _M_begin; } | |
1119 | iterator end() const noexcept { return _M_end; } | |
d715f554 | 1120 | _GLIBCXX_NODISCARD bool empty() const noexcept { return _M_begin == _M_end; } |
e5989e71 JW |
1121 | |
1122 | iterator | |
1123 | find(const address_v6& __addr) const noexcept | |
1124 | { | |
1125 | if (*_M_begin <= __addr && __addr < *_M_end) | |
1126 | return iterator{__addr}; | |
1127 | return end(); | |
1128 | } | |
1129 | ||
1130 | private: | |
1131 | iterator _M_begin; | |
1132 | iterator _M_end; | |
1133 | }; | |
1134 | ||
f26e72d8 | 1135 | using address_v6_range = basic_address_range<address_v6>; |
e5989e71 | 1136 | |
f0b88346 | 1137 | /// @} |
3084625d | 1138 | |
e5989e71 JW |
1139 | bool |
1140 | operator==(const network_v4& __a, const network_v4& __b) noexcept; | |
1141 | ||
1142 | bool | |
1143 | operator==(const network_v6& __a, const network_v6& __b) noexcept; | |
1144 | ||
e5989e71 JW |
1145 | |
1146 | /// An IPv4 network address. | |
1147 | class network_v4 | |
1148 | { | |
1149 | public: | |
1150 | // constructors: | |
1151 | constexpr network_v4() noexcept : _M_addr(), _M_prefix_len(0) { } | |
1152 | ||
1153 | constexpr | |
1154 | network_v4(const address_v4& __addr, int __prefix_len) | |
1155 | : _M_addr(__addr), _M_prefix_len(__prefix_len) | |
1156 | { | |
1157 | if (_M_prefix_len < 0 || _M_prefix_len > 32) | |
1158 | __throw_out_of_range("network_v4: invalid prefix length"); | |
1159 | } | |
1160 | ||
1161 | constexpr | |
1162 | network_v4(const address_v4& __addr, const address_v4& __mask) | |
1163 | : _M_addr(__addr), _M_prefix_len(__builtin_popcount(__mask.to_uint())) | |
1164 | { | |
1165 | if (_M_prefix_len != 0) | |
1166 | { | |
1167 | address_v4::uint_type __mask_uint = __mask.to_uint(); | |
1168 | if (__builtin_ctz(__mask_uint) != (32 - _M_prefix_len)) | |
1169 | __throw_invalid_argument("network_v4: invalid mask"); | |
1170 | if ((__mask_uint & 0x80000000) == 0) | |
1171 | __throw_invalid_argument("network_v4: invalid mask"); | |
1172 | } | |
1173 | } | |
1174 | ||
1175 | // members: | |
1176 | ||
1177 | constexpr address_v4 address() const noexcept { return _M_addr; } | |
1178 | constexpr int prefix_length() const noexcept { return _M_prefix_len; } | |
1179 | ||
1180 | constexpr address_v4 | |
1181 | netmask() const noexcept | |
1182 | { | |
1183 | address_v4::uint_type __val = address_v4::broadcast().to_uint(); | |
1184 | __val >>= (32 - _M_prefix_len); | |
1185 | __val <<= (32 - _M_prefix_len); | |
1186 | return address_v4{__val}; | |
1187 | } | |
1188 | ||
1189 | constexpr address_v4 | |
1190 | network() const noexcept | |
1191 | { return address_v4{_M_addr.to_uint() & netmask().to_uint()}; } | |
1192 | ||
1193 | constexpr address_v4 | |
1194 | broadcast() const noexcept | |
1195 | { return address_v4{_M_addr.to_uint() | ~netmask().to_uint()}; } | |
1196 | ||
1197 | address_v4_range | |
1198 | hosts() const noexcept | |
1199 | { | |
1200 | if (is_host()) | |
1201 | return { address(), *++address_v4_iterator(address()) }; | |
1202 | return { network(), broadcast() }; | |
1203 | } | |
1204 | ||
1205 | constexpr network_v4 | |
1206 | canonical() const noexcept | |
1207 | { return network_v4(network(), prefix_length()); } | |
1208 | ||
1209 | constexpr bool is_host() const noexcept { return _M_prefix_len == 32; } | |
1210 | ||
1211 | constexpr bool | |
1212 | is_subnet_of(const network_v4& __other) const noexcept | |
1213 | { | |
1214 | if (__other.prefix_length() < prefix_length()) | |
1215 | { | |
1216 | network_v4 __net(address(), __other.prefix_length()); | |
1217 | return __net.canonical() == __other.canonical(); | |
1218 | } | |
1219 | return false; | |
1220 | } | |
1221 | ||
1222 | template<typename _Allocator = allocator<char>> | |
1223 | __string_with<_Allocator> | |
1224 | to_string(const _Allocator& __a = _Allocator()) const | |
1225 | { | |
1226 | return address().to_string(__a) + '/' | |
1227 | + std::to_string(prefix_length()); | |
1228 | } | |
1229 | ||
1230 | private: | |
1231 | address_v4 _M_addr; | |
1232 | int _M_prefix_len; | |
1233 | }; | |
1234 | ||
1235 | /// An IPv6 network address. | |
1236 | class network_v6 | |
1237 | { | |
1238 | public: | |
1239 | // constructors: | |
1240 | constexpr network_v6() noexcept : _M_addr(), _M_prefix_len(0) { } | |
1241 | ||
1242 | constexpr | |
1243 | network_v6(const address_v6& __addr, int __prefix_len) | |
1244 | : _M_addr(__addr), _M_prefix_len(__prefix_len) | |
1245 | { | |
1246 | if (_M_prefix_len < 0 || _M_prefix_len > 128) | |
1247 | __throw_out_of_range("network_v6: invalid prefix length"); | |
1248 | } | |
1249 | ||
1250 | // members: | |
1251 | constexpr address_v6 address() const noexcept { return _M_addr; } | |
1252 | constexpr int prefix_length() const noexcept { return _M_prefix_len; } | |
1253 | ||
1254 | constexpr address_v6 network() const noexcept; // TODO | |
1255 | ||
1256 | address_v6_range | |
1257 | hosts() const noexcept | |
1258 | { | |
1259 | if (is_host()) | |
1260 | return { address(), *++address_v6_iterator(address()) }; | |
1261 | return {}; // { network(), XXX broadcast() XXX }; // TODO | |
1262 | } | |
1263 | ||
1264 | constexpr network_v6 | |
1265 | canonical() const noexcept | |
1266 | { return network_v6{network(), prefix_length()}; } | |
1267 | ||
1268 | constexpr bool is_host() const noexcept { return _M_prefix_len == 128; } | |
1269 | ||
1270 | constexpr bool | |
1271 | is_subnet_of(const network_v6& __other) const noexcept | |
1272 | { | |
1273 | if (__other.prefix_length() < prefix_length()) | |
1274 | { | |
1275 | network_v6 __net(address(), __other.prefix_length()); | |
1276 | return __net.canonical() == __other.canonical(); | |
1277 | } | |
1278 | return false; | |
1279 | } | |
1280 | ||
1281 | template<typename _Allocator = allocator<char>> | |
1282 | __string_with<_Allocator> | |
1283 | to_string(const _Allocator& __a = _Allocator()) const | |
1284 | { | |
1285 | return address().to_string(__a) + '/' | |
1286 | + std::to_string(prefix_length()); | |
1287 | } | |
1288 | ||
1289 | private: | |
1290 | address_v6 _M_addr; | |
1291 | int _M_prefix_len; | |
1292 | }; | |
1293 | ||
1294 | ||
1295 | /** ip::network_v4 comparisons | |
1296 | * @{ | |
1297 | */ | |
1298 | ||
1299 | inline bool | |
1300 | operator==(const network_v4& __a, const network_v4& __b) noexcept | |
1301 | { | |
1302 | return __a.address() == __b.address() | |
1303 | && __a.prefix_length() == __b.prefix_length(); | |
1304 | } | |
1305 | ||
1306 | inline bool | |
1307 | operator!=(const network_v4& __a, const network_v4& __b) noexcept | |
1308 | { return !(__a == __b); } | |
1309 | ||
f0b88346 | 1310 | /// @} |
e5989e71 JW |
1311 | |
1312 | /** ip::network_v6 comparisons | |
1313 | * @{ | |
1314 | */ | |
1315 | ||
1316 | inline bool | |
1317 | operator==(const network_v6& __a, const network_v6& __b) noexcept | |
1318 | { | |
1319 | return __a.address() == __b.address() | |
1320 | && __a.prefix_length() == __b.prefix_length(); | |
1321 | } | |
1322 | ||
1323 | inline bool | |
1324 | operator!=(const network_v6& __a, const network_v6& __b) noexcept | |
1325 | { return !(__a == __b); } | |
1326 | ||
f0b88346 | 1327 | /// @} |
e5989e71 JW |
1328 | |
1329 | /** ip::network_v4 creation | |
1330 | * @{ | |
1331 | */ | |
1332 | ||
1333 | inline network_v4 | |
1334 | make_network_v4(const address_v4& __a, int __prefix_len) | |
1335 | { return network_v4{__a, __prefix_len}; } | |
1336 | ||
1337 | network_v4 | |
1338 | make_network_v4(const address_v4& __a, const address_v4& __mask) | |
1339 | { return network_v4{ __a, __mask }; } | |
1340 | ||
1341 | network_v4 make_network_v4(const char*, error_code&) noexcept; // TODO | |
1342 | ||
1343 | inline network_v4 | |
1344 | make_network_v4(const char* __str) | |
1345 | { return make_network_v4(__str, __throw_on_error{"make_network_v4"}); } | |
1346 | ||
1347 | network_v4 make_network_v4(const string&, error_code&) noexcept; // TODO | |
1348 | ||
1349 | inline network_v4 | |
1350 | make_network_v4(const string& __str) | |
1351 | { return make_network_v4(__str, __throw_on_error{"make_network_v4"}); } | |
1352 | ||
1353 | network_v4 make_network_v4(string_view, error_code&) noexcept; // TODO | |
1354 | ||
1355 | inline network_v4 | |
1356 | make_network_v4(string_view __str) | |
1357 | { return make_network_v4(__str, __throw_on_error{"make_network_v4"}); } | |
1358 | ||
f0b88346 | 1359 | /// @} |
e5989e71 JW |
1360 | |
1361 | /** ip::network_v6 creation | |
1362 | * @{ | |
1363 | */ | |
1364 | ||
1365 | inline network_v6 | |
1366 | make_network_v6(const address_v6& __a, int __prefix_len) | |
1367 | { return network_v6{__a, __prefix_len}; } | |
1368 | ||
1369 | network_v6 make_network_v6(const char*, error_code&) noexcept; // TODO | |
1370 | ||
1371 | inline network_v6 | |
1372 | make_network_v6(const char* __str) | |
1373 | { return make_network_v6(__str, __throw_on_error{"make_network_v6"}); } | |
1374 | ||
1375 | network_v6 make_network_v6(const string&, error_code&) noexcept; // TODO | |
1376 | ||
1377 | inline network_v6 | |
1378 | make_network_v6(const string& __str) | |
1379 | { return make_network_v6(__str, __throw_on_error{"make_network_v6"}); } | |
1380 | ||
1381 | network_v6 make_network_v6(string_view, error_code&) noexcept; // TODO | |
1382 | ||
1383 | inline network_v6 | |
1384 | make_network_v6(string_view __str) | |
1385 | { return make_network_v6(__str, __throw_on_error{"make_network_v6"}); } | |
1386 | ||
f0b88346 | 1387 | /// @} |
e5989e71 JW |
1388 | |
1389 | /// ip::network_v4 I/O | |
1390 | template<typename _CharT, typename _Traits> | |
1391 | inline basic_ostream<_CharT, _Traits>& | |
1392 | operator<<(basic_ostream<_CharT, _Traits>& __os, const network_v4& __net) | |
1393 | { return __os << __net.to_string(); } | |
1394 | ||
1395 | /// ip::network_v6 I/O | |
1396 | template<typename _CharT, typename _Traits> | |
1397 | inline basic_ostream<_CharT, _Traits>& | |
1398 | operator<<(basic_ostream<_CharT, _Traits>& __os, const network_v6& __net) | |
1399 | { return __os << __net.to_string(); } | |
1400 | ||
1401 | /// An IP endpoint. | |
1402 | template<typename _InternetProtocol> | |
1403 | class basic_endpoint | |
1404 | { | |
1405 | public: | |
1406 | // types: | |
f26e72d8 | 1407 | using protocol_type = _InternetProtocol; |
e5989e71 JW |
1408 | |
1409 | // constructors: | |
1410 | ||
1411 | constexpr | |
1412 | basic_endpoint() noexcept : _M_data() | |
1413 | { _M_data._M_v4.sin_family = protocol_type::v4().family(); } | |
1414 | ||
1415 | constexpr | |
1416 | basic_endpoint(const protocol_type& __proto, | |
1417 | port_type __port_num) noexcept | |
1418 | : _M_data() | |
1419 | { | |
1420 | __glibcxx_assert(__proto == protocol_type::v4() | |
1421 | || __proto == protocol_type::v6()); | |
1422 | ||
1423 | _M_data._M_v4.sin_family = __proto.family(); | |
187fdaea | 1424 | _M_data._M_v4.sin_port = address_v4::_S_hton_16(__port_num); |
e5989e71 JW |
1425 | } |
1426 | ||
1427 | constexpr | |
1428 | basic_endpoint(const ip::address& __addr, | |
1429 | port_type __port_num) noexcept | |
1430 | : _M_data() | |
1431 | { | |
1432 | if (__addr.is_v4()) | |
1433 | { | |
1434 | _M_data._M_v4.sin_family = protocol_type::v4().family(); | |
187fdaea | 1435 | _M_data._M_v4.sin_port = address_v4::_S_hton_16(__port_num); |
e5989e71 JW |
1436 | _M_data._M_v4.sin_addr.s_addr = __addr._M_v4._M_addr; |
1437 | } | |
1438 | else | |
1439 | { | |
1440 | _M_data._M_v6 = {}; | |
1441 | _M_data._M_v6.sin6_family = protocol_type::v6().family(); | |
187fdaea | 1442 | _M_data._M_v6.sin6_port = address_v4::_S_hton_16(__port_num); |
82a0f2fd JW |
1443 | __builtin_memcpy(_M_data._M_v6.sin6_addr.s6_addr, |
1444 | __addr._M_v6._M_bytes.data(), 16); | |
e5989e71 JW |
1445 | _M_data._M_v6.sin6_scope_id = __addr._M_v6._M_scope_id; |
1446 | } | |
1447 | } | |
1448 | ||
1449 | // members: | |
1450 | constexpr protocol_type protocol() const noexcept | |
1451 | { | |
1452 | return _M_data._M_v4.sin_family == AF_INET6 | |
1453 | ? protocol_type::v6() : protocol_type::v4(); | |
1454 | } | |
1455 | ||
1456 | constexpr ip::address | |
1457 | address() const noexcept | |
1458 | { | |
1459 | ip::address __addr; | |
1460 | if (protocol().family() == AF_INET6) | |
1461 | { | |
82a0f2fd JW |
1462 | __builtin_memcpy(&__addr._M_v6._M_bytes, |
1463 | _M_data._M_v6.sin6_addr.s6_addr, 16); | |
e5989e71 JW |
1464 | __addr._M_is_v4 = false; |
1465 | } | |
1466 | else | |
1467 | { | |
82a0f2fd JW |
1468 | __builtin_memcpy(&__addr._M_v4._M_addr, |
1469 | &_M_data._M_v4.sin_addr.s_addr, 4); | |
e5989e71 JW |
1470 | } |
1471 | return __addr; | |
1472 | } | |
1473 | ||
1474 | void | |
1475 | address(const ip::address& __addr) noexcept | |
1476 | { | |
1477 | if (__addr.is_v6()) | |
1478 | { | |
1479 | _M_data._M_v6 = {}; | |
1480 | _M_data._M_v6.sin6_family = protocol_type::v6().family(); | |
82a0f2fd JW |
1481 | __builtin_memcpy(_M_data._M_v6.sin6_addr.s6_addr, |
1482 | __addr._M_v6._M_bytes.data(), 16); | |
e5989e71 JW |
1483 | _M_data._M_v6.sin6_scope_id = __addr._M_v6._M_scope_id; |
1484 | } | |
1485 | else | |
1486 | { | |
1487 | _M_data._M_v4.sin_family = protocol_type::v4().family(); | |
1488 | _M_data._M_v4.sin_addr.s_addr = __addr._M_v4._M_addr; | |
1489 | } | |
1490 | } | |
1491 | ||
1492 | constexpr port_type | |
1493 | port() const noexcept | |
187fdaea | 1494 | { return address_v4::_S_ntoh_16(_M_data._M_v4.sin_port); } |
e5989e71 JW |
1495 | |
1496 | void | |
1497 | port(port_type __port_num) noexcept | |
187fdaea | 1498 | { _M_data._M_v4.sin_port = address_v4::_S_hton_16(__port_num); } |
e5989e71 JW |
1499 | |
1500 | void* data() noexcept { return &_M_data; } | |
1501 | const void* data() const noexcept { return &_M_data; } | |
1502 | constexpr size_t size() const noexcept | |
1503 | { | |
1504 | return protocol().family() == AF_INET6 | |
1505 | ? sizeof(sockaddr_in6) : sizeof(sockaddr_in); | |
1506 | } | |
1507 | ||
1508 | void | |
1509 | resize(size_t __s) | |
1510 | { | |
1511 | if ((protocol().family() == AF_INET6 && __s != sizeof(sockaddr_in6)) | |
1512 | || (protocol().family() == AF_INET && __s != sizeof(sockaddr_in))) | |
1513 | __throw_length_error("net::ip::basic_endpoint::resize"); | |
1514 | } | |
1515 | ||
1516 | constexpr size_t capacity() const noexcept { return sizeof(_M_data); } | |
1517 | ||
1518 | private: | |
1519 | union | |
1520 | { | |
1521 | sockaddr_in _M_v4; | |
1522 | sockaddr_in6 _M_v6; | |
1523 | } _M_data; | |
1524 | }; | |
1525 | ||
1526 | /** basic_endpoint comparisons | |
1527 | * @{ | |
1528 | */ | |
1529 | ||
1530 | template<typename _InternetProtocol> | |
1531 | inline bool | |
1532 | operator==(const basic_endpoint<_InternetProtocol>& __a, | |
1533 | const basic_endpoint<_InternetProtocol>& __b) | |
1534 | { return __a.address() == __b.address() && __a.port() == __b.port(); } | |
1535 | ||
1536 | template<typename _InternetProtocol> | |
1537 | inline bool | |
1538 | operator!=(const basic_endpoint<_InternetProtocol>& __a, | |
1539 | const basic_endpoint<_InternetProtocol>& __b) | |
1540 | { return !(__a == __b); } | |
1541 | ||
1542 | template<typename _InternetProtocol> | |
1543 | inline bool | |
1544 | operator< (const basic_endpoint<_InternetProtocol>& __a, | |
1545 | const basic_endpoint<_InternetProtocol>& __b) | |
1546 | { | |
1547 | return __a.address() < __b.address() | |
1548 | || (!(__b.address() < __a.address()) && __a.port() < __b.port()); | |
1549 | } | |
1550 | ||
1551 | template<typename _InternetProtocol> | |
1552 | inline bool | |
1553 | operator> (const basic_endpoint<_InternetProtocol>& __a, | |
1554 | const basic_endpoint<_InternetProtocol>& __b) | |
1555 | { return __b < __a; } | |
1556 | ||
1557 | template<typename _InternetProtocol> | |
1558 | inline bool | |
1559 | operator<=(const basic_endpoint<_InternetProtocol>& __a, | |
1560 | const basic_endpoint<_InternetProtocol>& __b) | |
1561 | { return !(__b < __a); } | |
1562 | ||
1563 | template<typename _InternetProtocol> | |
1564 | inline bool | |
1565 | operator>=(const basic_endpoint<_InternetProtocol>& __a, | |
1566 | const basic_endpoint<_InternetProtocol>& __b) | |
1567 | { return !(__a < __b); } | |
1568 | ||
f0b88346 | 1569 | /// @} |
e5989e71 JW |
1570 | |
1571 | /// basic_endpoint I/O | |
1572 | template<typename _CharT, typename _Traits, typename _InternetProtocol> | |
1573 | inline basic_ostream<_CharT, _Traits>& | |
1574 | operator<<(basic_ostream<_CharT, _Traits>& __os, | |
1575 | const basic_endpoint<_InternetProtocol>& __ep) | |
1576 | { | |
1577 | basic_ostringstream<_CharT, _Traits> __ss; | |
1578 | if (__ep.protocol() | |
1579 | == basic_endpoint<_InternetProtocol>::protocol_type::v6()) | |
1580 | __ss << '[' << __ep.address() << ']'; | |
1581 | else | |
1582 | __ss << __ep.address(); | |
1583 | __ss << ':' << __ep.port(); | |
1584 | __os << __ss.str(); | |
1585 | return __os; | |
1586 | } | |
1587 | ||
1588 | /** Type representing a single result of name/address resolution. | |
1589 | * @{ | |
1590 | */ | |
1591 | ||
1592 | template<typename _InternetProtocol> | |
1593 | class basic_resolver_entry | |
1594 | { | |
1595 | public: | |
1596 | // types: | |
f26e72d8 JW |
1597 | using protocol_type = _InternetProtocol; |
1598 | using endpoint_type = typename _InternetProtocol::endpoint; | |
e5989e71 JW |
1599 | |
1600 | // constructors: | |
1601 | basic_resolver_entry() { } | |
1602 | ||
1603 | basic_resolver_entry(const endpoint_type& __ep, | |
1604 | string_view __h, string_view __s) | |
1605 | : _M_ep(__ep), _M_host(__h), _M_svc(__s) { } | |
1606 | ||
1607 | // members: | |
1608 | endpoint_type endpoint() const { return _M_ep; } | |
1609 | operator endpoint_type() const { return _M_ep; } | |
1610 | ||
1611 | template<typename _Allocator = allocator<char>> | |
1612 | __string_with<_Allocator> | |
1613 | host_name(const _Allocator& __a = _Allocator()) const | |
1614 | { return { _M_host, __a }; } | |
1615 | ||
1616 | template<typename _Allocator = allocator<char>> | |
1617 | __string_with<_Allocator> | |
1618 | service_name(const _Allocator& __a = _Allocator()) const | |
1619 | { return { _M_svc, __a }; } | |
1620 | ||
1621 | private: | |
1622 | basic_endpoint<_InternetProtocol> _M_ep; | |
1623 | string _M_host; | |
1624 | string _M_svc; | |
1625 | }; | |
1626 | ||
1627 | template<typename _InternetProtocol> | |
1628 | inline bool | |
1629 | operator==(const basic_resolver_entry<_InternetProtocol>& __a, | |
1630 | const basic_resolver_entry<_InternetProtocol>& __b) | |
1631 | { | |
1632 | return __a.endpoint() == __b.endpoint() | |
1633 | && __a.host_name() == __b.host_name() | |
1634 | && __a.service_name() == __b.service_name(); | |
1635 | } | |
1636 | ||
1637 | template<typename _InternetProtocol> | |
1638 | inline bool | |
1639 | operator!=(const basic_resolver_entry<_InternetProtocol>& __a, | |
1640 | const basic_resolver_entry<_InternetProtocol>& __b) | |
1641 | { return !(__a == __b); } | |
1642 | ||
f0b88346 | 1643 | /// @} |
e5989e71 JW |
1644 | |
1645 | /** Base class defining flags for name/address resolution. | |
1646 | * @{ | |
1647 | */ | |
1648 | ||
1649 | class resolver_base | |
1650 | { | |
1651 | public: | |
1652 | enum flags : int | |
1653 | { | |
1654 | __flags_passive = AI_PASSIVE, | |
1655 | __flags_canonical_name = AI_CANONNAME, | |
1656 | __flags_numeric_host = AI_NUMERICHOST, | |
cbe0bca4 | 1657 | #ifdef AI_NUMERICSERV |
e5989e71 | 1658 | __flags_numeric_service = AI_NUMERICSERV, |
cbe0bca4 | 1659 | #endif |
e5989e71 JW |
1660 | __flags_v4_mapped = AI_V4MAPPED, |
1661 | __flags_all_matching = AI_ALL, | |
1662 | __flags_address_configured = AI_ADDRCONFIG | |
1663 | }; | |
1664 | static constexpr flags passive = __flags_passive; | |
1665 | static constexpr flags canonical_name = __flags_canonical_name; | |
1666 | static constexpr flags numeric_host = __flags_numeric_host; | |
cbe0bca4 | 1667 | #ifdef AI_NUMERICSERV |
e5989e71 | 1668 | static constexpr flags numeric_service = __flags_numeric_service; |
cbe0bca4 | 1669 | #endif |
e5989e71 JW |
1670 | static constexpr flags v4_mapped = __flags_v4_mapped; |
1671 | static constexpr flags all_matching = __flags_all_matching; | |
1672 | static constexpr flags address_configured = __flags_address_configured; | |
1673 | ||
1674 | protected: | |
1675 | resolver_base() = default; | |
1676 | ~resolver_base() = default; | |
1677 | }; | |
1678 | ||
1679 | constexpr resolver_base::flags | |
1680 | operator&(resolver_base::flags __f1, resolver_base::flags __f2) | |
1681 | { return resolver_base::flags( int(__f1) & int(__f2) ); } | |
1682 | ||
1683 | constexpr resolver_base::flags | |
1684 | operator|(resolver_base::flags __f1, resolver_base::flags __f2) | |
1685 | { return resolver_base::flags( int(__f1) | int(__f2) ); } | |
1686 | ||
1687 | constexpr resolver_base::flags | |
1688 | operator^(resolver_base::flags __f1, resolver_base::flags __f2) | |
1689 | { return resolver_base::flags( int(__f1) ^ int(__f2) ); } | |
1690 | ||
1691 | constexpr resolver_base::flags | |
1692 | operator~(resolver_base::flags __f) | |
1693 | { return resolver_base::flags( ~int(__f) ); } | |
1694 | ||
1695 | inline resolver_base::flags& | |
1696 | operator&=(resolver_base::flags& __f1, resolver_base::flags __f2) | |
1697 | { return __f1 = (__f1 & __f2); } | |
1698 | ||
1699 | inline resolver_base::flags& | |
1700 | operator|=(resolver_base::flags& __f1, resolver_base::flags __f2) | |
1701 | { return __f1 = (__f1 | __f2); } | |
1702 | ||
1703 | inline resolver_base::flags& | |
1704 | operator^=(resolver_base::flags& __f1, resolver_base::flags __f2) | |
1705 | { return __f1 = (__f1 ^ __f2); } | |
1706 | ||
82a0f2fd | 1707 | // TODO define resolver_base::flags static constants for C++14 mode |
e5989e71 | 1708 | |
f0b88346 | 1709 | /// @} |
e5989e71 JW |
1710 | |
1711 | /** Container for results of name/address resolution. | |
1712 | * @{ | |
1713 | */ | |
1714 | ||
1715 | template<typename _InternetProtocol> | |
1716 | class basic_resolver_results | |
1717 | { | |
1718 | public: | |
1719 | // types: | |
f26e72d8 JW |
1720 | using protocol_type = _InternetProtocol; |
1721 | using endpoint_type = typename protocol_type::endpoint; | |
1722 | using value_type = basic_resolver_entry<protocol_type>; | |
1723 | using const_reference = const value_type&; | |
1724 | using reference = value_type&; | |
1725 | using const_iterator = typename forward_list<value_type>::const_iterator; | |
1726 | using iterator = const_iterator; | |
1727 | using difference_type = ptrdiff_t; | |
1728 | using size_type = size_t; | |
e5989e71 JW |
1729 | |
1730 | // construct / copy / destroy: | |
1731 | ||
1732 | basic_resolver_results() = default; | |
1733 | ||
1734 | basic_resolver_results(const basic_resolver_results&) = default; | |
1735 | ||
1736 | basic_resolver_results(basic_resolver_results&&) noexcept = default; | |
1737 | ||
1738 | basic_resolver_results& | |
1739 | operator=(const basic_resolver_results&) = default; | |
1740 | ||
1741 | basic_resolver_results& | |
1742 | operator=(basic_resolver_results&&) = default; | |
1743 | ||
1744 | ~basic_resolver_results() = default; | |
1745 | ||
1746 | // size: | |
1747 | size_type size() const noexcept { return _M_size; } | |
1748 | size_type max_size() const noexcept { return _M_results.max_size(); } | |
d9d34449 JW |
1749 | |
1750 | _GLIBCXX_NODISCARD bool | |
1751 | empty() const noexcept { return _M_results.empty(); } | |
e5989e71 JW |
1752 | |
1753 | // element access: | |
1754 | const_iterator begin() const { return _M_results.begin(); } | |
1755 | const_iterator end() const { return _M_results.end(); } | |
1756 | const_iterator cbegin() const { return _M_results.begin(); } | |
1757 | const_iterator cend() const { return _M_results.end(); } | |
1758 | ||
1759 | // swap: | |
1760 | void | |
1761 | swap(basic_resolver_results& __that) noexcept | |
1762 | { _M_results.swap(__that._M_results); } | |
1763 | ||
1764 | private: | |
1765 | friend class basic_resolver<protocol_type>; | |
1766 | ||
1767 | basic_resolver_results(string_view, string_view, resolver_base::flags, | |
1768 | error_code&, protocol_type* = nullptr); | |
1769 | ||
1770 | basic_resolver_results(const endpoint_type&, error_code&); | |
1771 | ||
1772 | forward_list<value_type> _M_results; | |
1773 | size_t _M_size = 0; | |
1774 | }; | |
1775 | ||
1776 | template<typename _InternetProtocol> | |
1777 | inline bool | |
1778 | operator==(const basic_resolver_results<_InternetProtocol>& __a, | |
1779 | const basic_resolver_results<_InternetProtocol>& __b) | |
1780 | { | |
1781 | return __a.size() == __b.size() | |
1782 | && std::equal(__a.begin(), __a.end(), __b.begin()); | |
1783 | } | |
1784 | ||
1785 | template<typename _InternetProtocol> | |
1786 | inline bool | |
1787 | operator!=(const basic_resolver_results<_InternetProtocol>& __a, | |
1788 | const basic_resolver_results<_InternetProtocol>& __b) | |
1789 | { return !(__a == __b); } | |
1790 | ||
f0b88346 | 1791 | /// @} |
e5989e71 JW |
1792 | |
1793 | /// Perform name/address resolution. | |
1794 | template<typename _InternetProtocol> | |
1795 | class basic_resolver : public resolver_base | |
1796 | { | |
1797 | public: | |
1798 | // types: | |
1799 | ||
f26e72d8 JW |
1800 | using executor_type = io_context::executor_type; |
1801 | using protocol_type = _InternetProtocol; | |
1802 | using endpoint_type = typename _InternetProtocol::endpoint; | |
1803 | using results_type = basic_resolver_results<_InternetProtocol>; | |
e5989e71 JW |
1804 | |
1805 | // construct / copy / destroy: | |
1806 | ||
1807 | explicit basic_resolver(io_context& __ctx) : _M_ctx(&__ctx) { } | |
1808 | ||
1809 | basic_resolver(const basic_resolver&) = delete; | |
1810 | ||
1811 | basic_resolver(basic_resolver&& __rhs) noexcept | |
1812 | : _M_ctx(__rhs._M_ctx) | |
1813 | { } // TODO move state/tasks etc. | |
1814 | ||
1815 | ~basic_resolver() { cancel(); } | |
1816 | ||
1817 | basic_resolver& operator=(const basic_resolver&) = delete; | |
1818 | ||
1819 | basic_resolver& operator=(basic_resolver&& __rhs) | |
1820 | { | |
1821 | cancel(); | |
1822 | _M_ctx = __rhs._M_ctx; | |
1823 | // TODO move state/tasks etc. | |
1824 | return *this; | |
1825 | } | |
1826 | ||
1827 | // basic_resolver operations: | |
1828 | ||
1829 | executor_type get_executor() noexcept { return _M_ctx->get_executor(); } | |
1830 | ||
1831 | void cancel() { } // TODO | |
1832 | ||
1833 | results_type | |
1834 | resolve(string_view __host_name, string_view __service_name) | |
1835 | { | |
1836 | return resolve(__host_name, __service_name, resolver_base::flags(), | |
1837 | __throw_on_error{"basic_resolver::resolve"}); | |
1838 | } | |
1839 | ||
1840 | results_type | |
1841 | resolve(string_view __host_name, string_view __service_name, | |
1842 | error_code& __ec) | |
1843 | { | |
1844 | return resolve(__host_name, __service_name, resolver_base::flags(), | |
1845 | __ec); | |
1846 | } | |
1847 | ||
1848 | results_type | |
1849 | resolve(string_view __host_name, string_view __service_name, flags __f) | |
1850 | { | |
1851 | return resolve(__host_name, __service_name, __f, | |
1852 | __throw_on_error{"basic_resolver::resolve"}); | |
1853 | } | |
1854 | ||
1855 | results_type | |
1856 | resolve(string_view __host_name, string_view __service_name, flags __f, | |
1857 | error_code& __ec) | |
1858 | { return {__host_name, __service_name, __f, __ec}; } | |
1859 | ||
1860 | template<typename _CompletionToken> | |
1861 | __deduced_t<_CompletionToken, void(error_code, results_type)> | |
1862 | async_resolve(string_view __host_name, string_view __service_name, | |
1863 | _CompletionToken&& __token) | |
1864 | { | |
1865 | return async_resolve(__host_name, __service_name, | |
1866 | resolver_base::flags(), | |
1867 | forward<_CompletionToken>(__token)); | |
1868 | } | |
1869 | ||
1870 | template<typename _CompletionToken> | |
1871 | __deduced_t<_CompletionToken, void(error_code, results_type)> | |
1872 | async_resolve(string_view __host_name, string_view __service_name, | |
1873 | flags __f, _CompletionToken&& __token); // TODO | |
1874 | ||
1875 | results_type | |
1876 | resolve(const protocol_type& __protocol, | |
1877 | string_view __host_name, string_view __service_name) | |
1878 | { | |
1879 | return resolve(__protocol, __host_name, __service_name, | |
1880 | resolver_base::flags(), | |
1881 | __throw_on_error{"basic_resolver::resolve"}); | |
1882 | } | |
1883 | ||
1884 | results_type | |
1885 | resolve(const protocol_type& __protocol, | |
1886 | string_view __host_name, string_view __service_name, | |
1887 | error_code& __ec) | |
1888 | { | |
1889 | return resolve(__protocol, __host_name, __service_name, | |
1890 | resolver_base::flags(), __ec); | |
1891 | } | |
1892 | ||
1893 | results_type | |
1894 | resolve(const protocol_type& __protocol, | |
1895 | string_view __host_name, string_view __service_name, flags __f) | |
1896 | { | |
1897 | return resolve(__protocol, __host_name, __service_name, __f, | |
1898 | __throw_on_error{"basic_resolver::resolve"}); | |
1899 | } | |
1900 | ||
1901 | results_type | |
1902 | resolve(const protocol_type& __protocol, | |
1903 | string_view __host_name, string_view __service_name, | |
1904 | flags __f, error_code& __ec) | |
1905 | { return {__host_name, __service_name, __f, __ec, &__protocol}; } | |
1906 | ||
1907 | template<typename _CompletionToken> | |
1908 | __deduced_t<_CompletionToken, void(error_code, results_type)> | |
1909 | async_resolve(const protocol_type& __protocol, | |
1910 | string_view __host_name, string_view __service_name, | |
1911 | _CompletionToken&& __token) | |
1912 | { | |
1913 | return async_resolve(__protocol, __host_name, __service_name, | |
1914 | resolver_base::flags(), | |
1915 | forward<_CompletionToken>(__token)); | |
1916 | } | |
1917 | ||
1918 | template<typename _CompletionToken> | |
1919 | __deduced_t<_CompletionToken, void(error_code, results_type)> | |
1920 | async_resolve(const protocol_type& __protocol, | |
1921 | string_view __host_name, string_view __service_name, | |
1922 | flags __f, _CompletionToken&& __token); // TODO | |
1923 | ||
1924 | results_type | |
1925 | resolve(const endpoint_type& __ep) | |
1926 | { return resolve(__ep, __throw_on_error{"basic_resolver::resolve"}); } | |
1927 | ||
1928 | results_type | |
1929 | resolve(const endpoint_type& __ep, error_code& __ec) | |
1930 | { return { __ep, __ec }; } | |
1931 | ||
1932 | template<typename _CompletionToken> // TODO | |
1933 | __deduced_t<_CompletionToken, void(error_code, results_type)> | |
1934 | async_resolve(const endpoint_type& __ep, _CompletionToken&& __token); | |
1935 | ||
1936 | private: | |
1937 | io_context* _M_ctx; | |
1938 | }; | |
1939 | ||
1940 | /// Private constructor to synchronously resolve host and service names. | |
1941 | template<typename _InternetProtocol> | |
1942 | basic_resolver_results<_InternetProtocol>:: | |
1943 | basic_resolver_results(string_view __host_name, string_view __service_name, | |
1944 | resolver_base::flags __f, error_code& __ec, | |
1945 | protocol_type* __protocol) | |
1946 | { | |
82a0f2fd | 1947 | #ifdef _GLIBCXX_HAVE_NETDB_H |
e5989e71 JW |
1948 | string __host; |
1949 | const char* __h = __host_name.data() | |
1950 | ? (__host = __host_name.to_string()).c_str() | |
1951 | : nullptr; | |
1952 | string __svc; | |
1953 | const char* __s = __service_name.data() | |
1954 | ? (__svc = __service_name.to_string()).c_str() | |
1955 | : nullptr; | |
1956 | ||
1957 | ::addrinfo __hints{ }; | |
1958 | __hints.ai_flags = static_cast<int>(__f); | |
1959 | if (__protocol) | |
1960 | { | |
1961 | __hints.ai_family = __protocol->family(); | |
1962 | __hints.ai_socktype = __protocol->type(); | |
1963 | __hints.ai_protocol = __protocol->protocol(); | |
1964 | } | |
1965 | else | |
1966 | { | |
1967 | auto __p = endpoint_type{}.protocol(); | |
1968 | __hints.ai_family = AF_UNSPEC; | |
1969 | __hints.ai_socktype = __p.type(); | |
1970 | __hints.ai_protocol = __p.protocol(); | |
1971 | } | |
1972 | ||
1973 | struct __scoped_addrinfo | |
1974 | { | |
1975 | ~__scoped_addrinfo() { if (_M_p) ::freeaddrinfo(_M_p); } | |
1976 | ::addrinfo* _M_p = nullptr; | |
1977 | } __sai; | |
1978 | ||
1979 | if (int __err = ::getaddrinfo(__h, __s, &__hints, &__sai._M_p)) | |
1980 | { | |
1981 | __ec.assign(__err, resolver_category()); | |
1982 | return; | |
1983 | } | |
1984 | __ec.clear(); | |
1985 | ||
1986 | endpoint_type __ep; | |
1987 | auto __tail = _M_results.before_begin(); | |
1988 | for (auto __ai = __sai._M_p; __ai != nullptr; __ai = __ai->ai_next) | |
1989 | { | |
1990 | if (__ai->ai_family == AF_INET || __ai->ai_family == AF_INET6) | |
1991 | { | |
1992 | if (__ai->ai_addrlen <= __ep.capacity()) | |
82a0f2fd | 1993 | __builtin_memcpy(__ep.data(), __ai->ai_addr, __ai->ai_addrlen); |
e5989e71 JW |
1994 | __ep.resize(__ai->ai_addrlen); |
1995 | __tail = _M_results.emplace_after(__tail, __ep, __host, __svc); | |
1996 | _M_size++; | |
1997 | } | |
1998 | } | |
82a0f2fd JW |
1999 | #else |
2000 | __ec = std::make_error_code(errc::operation_not_supported); | |
2001 | #endif | |
e5989e71 JW |
2002 | } |
2003 | ||
2004 | /// Private constructor to synchronously resolve an endpoint. | |
2005 | template<typename _InternetProtocol> | |
2006 | basic_resolver_results<_InternetProtocol>:: | |
2007 | basic_resolver_results(const endpoint_type& __ep, error_code& __ec) | |
2008 | { | |
82a0f2fd | 2009 | #ifdef _GLIBCXX_HAVE_NETDB_H |
e5989e71 JW |
2010 | char __host_name[256]; |
2011 | char __service_name[128]; | |
2012 | int __flags = 0; | |
2013 | if (__ep.protocol().type() == SOCK_DGRAM) | |
2014 | __flags |= NI_DGRAM; | |
2015 | auto __sa = static_cast<const sockaddr*>(__ep.data()); | |
2016 | int __err = ::getnameinfo(__sa, __ep.size(), | |
2017 | __host_name, sizeof(__host_name), | |
2018 | __service_name, sizeof(__service_name), | |
2019 | __flags); | |
2020 | if (__err) | |
2021 | { | |
2022 | __flags |= NI_NUMERICSERV; | |
2023 | __err = ::getnameinfo(__sa, __ep.size(), | |
2024 | __host_name, sizeof(__host_name), | |
2025 | __service_name, sizeof(__service_name), | |
2026 | __flags); | |
2027 | } | |
2028 | if (__err) | |
2029 | __ec.assign(__err, resolver_category()); | |
2030 | else | |
2031 | { | |
2032 | __ec.clear(); | |
2033 | _M_results.emplace_front(__ep, __host_name, __service_name); | |
2034 | _M_size = 1; | |
2035 | } | |
82a0f2fd JW |
2036 | #else |
2037 | __ec = std::make_error_code(errc::operation_not_supported); | |
2038 | #endif | |
e5989e71 JW |
2039 | } |
2040 | ||
2041 | /** The name of the local host. | |
2042 | * @{ | |
2043 | */ | |
2044 | ||
2045 | template<typename _Allocator> | |
2046 | __string_with<_Allocator> | |
2047 | host_name(const _Allocator& __a, error_code& __ec) | |
2048 | { | |
2049 | #ifdef HOST_NAME_MAX | |
2050 | constexpr size_t __maxlen = HOST_NAME_MAX; | |
2051 | #else | |
2052 | constexpr size_t __maxlen = 256; | |
2053 | #endif | |
2054 | char __buf[__maxlen + 1]; | |
2055 | if (::gethostname(__buf, __maxlen) == -1) | |
2056 | __ec.assign(errno, generic_category()); | |
2057 | __buf[__maxlen] = '\0'; | |
2058 | return { __buf, __a }; | |
2059 | } | |
2060 | ||
2061 | template<typename _Allocator> | |
2062 | inline __string_with<_Allocator> | |
2063 | host_name(const _Allocator& __a) | |
2064 | { return host_name(__a, __throw_on_error{"host_name"}); } | |
2065 | ||
2066 | inline string | |
2067 | host_name(error_code& __ec) | |
2068 | { return host_name(std::allocator<char>{}, __ec); } | |
2069 | ||
2070 | inline string | |
2071 | host_name() | |
2072 | { return host_name(std::allocator<char>{}, __throw_on_error{"host_name"}); } | |
2073 | ||
f0b88346 | 2074 | /// @} |
e5989e71 JW |
2075 | |
2076 | /// The TCP byte-stream protocol. | |
2077 | class tcp | |
2078 | { | |
2079 | public: | |
2080 | // types: | |
f26e72d8 JW |
2081 | using endpoint = basic_endpoint<tcp>; ///< A TCP endpoint. |
2082 | using resolver = basic_resolver<tcp>; ///< A TCP resolver. | |
2083 | using socket = basic_stream_socket<tcp>; ///< A TCP socket. | |
2084 | using acceptor = basic_socket_acceptor<tcp>; ///< A TCP acceptor. | |
2085 | using iostream = basic_socket_iostream<tcp>; /// A TCP iostream. | |
e5989e71 | 2086 | |
82a0f2fd | 2087 | #ifdef _GLIBCXX_HAVE_NETINET_TCP_H |
e5989e71 JW |
2088 | /// Disable coalescing of small segments (i.e. the Nagle algorithm). |
2089 | struct no_delay : __sockopt_crtp<no_delay, bool> | |
2090 | { | |
2091 | using __sockopt_crtp::__sockopt_crtp; | |
2092 | ||
2093 | static const int _S_level = IPPROTO_TCP; | |
2094 | static const int _S_name = TCP_NODELAY; | |
2095 | }; | |
82a0f2fd | 2096 | #endif |
e5989e71 JW |
2097 | |
2098 | // static members: | |
2099 | ||
2100 | /// A protocol object representing IPv4 TCP. | |
2101 | static constexpr tcp v4() noexcept { return tcp(AF_INET); } | |
2102 | /// A protocol object representing IPv6 TCP. | |
2103 | static constexpr tcp v6() noexcept { return tcp(AF_INET6); } | |
2104 | ||
2105 | tcp() = delete; | |
2106 | ||
2107 | constexpr int family() const noexcept { return _M_family; } | |
2108 | constexpr int type() const noexcept { return SOCK_STREAM; } | |
2109 | constexpr int protocol() const noexcept { return IPPROTO_TCP; } | |
2110 | ||
2111 | private: | |
2112 | constexpr explicit tcp(int __family) : _M_family(__family) { } | |
2113 | ||
2114 | int _M_family; | |
2115 | }; | |
2116 | ||
2117 | /** tcp comparisons | |
2118 | * @{ | |
2119 | */ | |
2120 | ||
2121 | inline bool | |
2122 | operator==(const tcp& __a, const tcp& __b) | |
2123 | { return __a.family() == __b.family(); } | |
2124 | ||
2125 | inline bool | |
2126 | operator!=(const tcp& __a, const tcp& __b) | |
2127 | { return !(__a == __b); } | |
2128 | ||
f0b88346 | 2129 | /// @} |
e5989e71 JW |
2130 | |
2131 | /// The UDP datagram protocol. | |
2132 | class udp | |
2133 | { | |
2134 | public: | |
2135 | // types: | |
f26e72d8 JW |
2136 | using endpoint = basic_endpoint<udp>; |
2137 | using resolver = basic_resolver<udp>; | |
2138 | using socket = basic_datagram_socket<udp>; | |
e5989e71 JW |
2139 | |
2140 | // static members: | |
2141 | static constexpr udp v4() noexcept { return udp(AF_INET); } | |
2142 | static constexpr udp v6() noexcept { return udp(AF_INET6); } | |
2143 | ||
2144 | udp() = delete; | |
2145 | ||
2146 | constexpr int family() const noexcept { return _M_family; } | |
2147 | constexpr int type() const noexcept { return SOCK_DGRAM; } | |
2148 | constexpr int protocol() const noexcept { return IPPROTO_UDP; } | |
2149 | ||
2150 | private: | |
2151 | constexpr explicit udp(int __family) : _M_family(__family) { } | |
2152 | ||
2153 | int _M_family; | |
2154 | }; | |
2155 | ||
2156 | /** udp comparisons | |
2157 | * @{ | |
2158 | */ | |
2159 | ||
2160 | bool | |
2161 | operator==(const udp& __a, const udp& __b) | |
2162 | { return __a.family() == __b.family(); } | |
2163 | ||
2164 | inline bool | |
2165 | operator!=(const udp& __a, const udp& __b) | |
2166 | { return !(__a == __b); } | |
2167 | ||
f0b88346 | 2168 | /// @} |
e5989e71 JW |
2169 | |
2170 | /// Restrict a socket created for an IPv6 protocol to IPv6 only. | |
2171 | struct v6_only : __sockopt_crtp<v6_only, bool> | |
2172 | { | |
2173 | using __sockopt_crtp::__sockopt_crtp; | |
2174 | ||
2175 | static const int _S_level = IPPROTO_IPV6; | |
2176 | static const int _S_name = IPV6_V6ONLY; | |
2177 | }; | |
2178 | ||
a70a4be9 JW |
2179 | namespace unicast |
2180 | { | |
e5989e71 JW |
2181 | /// Set the default number of hops (TTL) for outbound datagrams. |
2182 | struct hops : __sockopt_crtp<hops> | |
2183 | { | |
2184 | using __sockopt_crtp::__sockopt_crtp; | |
2185 | ||
2186 | template<typename _Protocol> | |
2187 | int | |
2188 | level(const _Protocol& __p) const noexcept | |
2189 | { return __p.family() == AF_INET6 ? IPPROTO_IPV6 : IPPROTO_IP; } | |
2190 | ||
2191 | template<typename _Protocol> | |
2192 | int | |
2193 | name(const _Protocol& __p) const noexcept | |
2194 | { return __p.family() == AF_INET6 ? IPV6_UNICAST_HOPS : IP_TTL; } | |
2195 | }; | |
e5989e71 JW |
2196 | } // namespace unicast |
2197 | ||
a70a4be9 JW |
2198 | namespace multicast |
2199 | { | |
e5989e71 JW |
2200 | /// Request that a socket joins a multicast group. |
2201 | struct join_group | |
2202 | { | |
2203 | explicit | |
2204 | join_group(const address&); | |
2205 | ||
2206 | explicit | |
2207 | join_group(const address_v4&, const address_v4& = address_v4::any()); | |
2208 | ||
2209 | explicit | |
2210 | join_group(const address_v6&, unsigned int = 0); | |
2211 | ||
2212 | template<typename _Protocol> | |
2213 | int | |
2214 | level(const _Protocol& __p) const noexcept | |
2215 | { return __p.family() == AF_INET6 ? IPPROTO_IPV6 : IPPROTO_IP; } | |
2216 | ||
2217 | template<typename _Protocol> | |
2218 | int | |
2219 | name(const _Protocol& __p) const noexcept | |
2220 | { | |
2221 | return __p.family() == AF_INET6 | |
2222 | ? IPV6_JOIN_GROUP : IP_ADD_MEMBERSHIP; | |
2223 | } | |
2224 | template<typename _Protocol> | |
2225 | void* | |
2226 | data(const _Protocol&) noexcept | |
2227 | { return std::addressof(_M_value); } | |
2228 | ||
2229 | template<typename _Protocol> | |
2230 | const void* | |
2231 | data(const _Protocol&) const noexcept | |
2232 | { return std::addressof(_M_value); } | |
2233 | ||
2234 | template<typename _Protocol> | |
2235 | size_t | |
2236 | size(const _Protocol& __p) const noexcept | |
2237 | { | |
2238 | return __p.family() == AF_INET6 | |
2239 | ? sizeof(_M_value._M_v6) : sizeof(_M_value._M_v4); | |
2240 | } | |
2241 | ||
2242 | template<typename _Protocol> | |
2243 | void | |
2244 | resize(const _Protocol& __p, size_t __s) | |
2245 | { | |
2246 | if (__s != size(__p)) | |
2247 | __throw_length_error("invalid value for socket option resize"); | |
2248 | } | |
2249 | ||
2250 | protected: | |
2251 | union | |
2252 | { | |
2253 | ipv6_mreq _M_v6; | |
2254 | ip_mreq _M_v4; | |
2255 | } _M_value; | |
2256 | }; | |
2257 | ||
2258 | /// Request that a socket leaves a multicast group. | |
2259 | struct leave_group | |
2260 | { | |
2261 | explicit | |
2262 | leave_group(const address&); | |
2263 | ||
2264 | explicit | |
2265 | leave_group(const address_v4&, const address_v4& = address_v4::any()); | |
2266 | ||
2267 | explicit | |
2268 | leave_group(const address_v6&, unsigned int = 0); | |
2269 | ||
2270 | template<typename _Protocol> | |
2271 | int | |
2272 | level(const _Protocol& __p) const noexcept | |
2273 | { return __p.family() == AF_INET6 ? IPPROTO_IPV6 : IPPROTO_IP; } | |
2274 | ||
2275 | template<typename _Protocol> | |
2276 | int | |
2277 | name(const _Protocol& __p) const noexcept | |
2278 | { | |
2279 | return __p.family() == AF_INET6 | |
2280 | ? IPV6_LEAVE_GROUP : IP_DROP_MEMBERSHIP; | |
2281 | } | |
2282 | template<typename _Protocol> | |
2283 | void* | |
2284 | data(const _Protocol&) noexcept | |
2285 | { return std::addressof(_M_value); } | |
2286 | ||
2287 | template<typename _Protocol> | |
2288 | const void* | |
2289 | data(const _Protocol&) const noexcept | |
2290 | { return std::addressof(_M_value); } | |
2291 | ||
2292 | template<typename _Protocol> | |
2293 | size_t | |
2294 | size(const _Protocol& __p) const noexcept | |
2295 | { | |
2296 | return __p.family() == AF_INET6 | |
2297 | ? sizeof(_M_value._M_v6) : sizeof(_M_value._M_v4); | |
2298 | } | |
2299 | ||
2300 | template<typename _Protocol> | |
2301 | void | |
2302 | resize(const _Protocol& __p, size_t __s) | |
2303 | { | |
2304 | if (__s != size(__p)) | |
2305 | __throw_length_error("invalid value for socket option resize"); | |
2306 | } | |
2307 | ||
2308 | protected: | |
2309 | union | |
2310 | { | |
2311 | ipv6_mreq _M_v6; | |
2312 | ip_mreq _M_v4; | |
2313 | } _M_value; | |
2314 | }; | |
2315 | ||
2316 | /// Specify the network interface for outgoing multicast datagrams. | |
2317 | class outbound_interface | |
2318 | { | |
2319 | explicit | |
2320 | outbound_interface(const address_v4&); | |
2321 | ||
2322 | explicit | |
2323 | outbound_interface(unsigned int); | |
2324 | ||
2325 | template<typename _Protocol> | |
2326 | int | |
2327 | level(const _Protocol& __p) const noexcept | |
2328 | { return __p.family() == AF_INET6 ? IPPROTO_IPV6 : IPPROTO_IP; } | |
2329 | ||
2330 | template<typename _Protocol> | |
2331 | int | |
2332 | name(const _Protocol& __p) const noexcept | |
2333 | { | |
2334 | return __p.family() == AF_INET6 | |
2335 | ? IPV6_MULTICAST_IF : IP_MULTICAST_IF; | |
2336 | } | |
2337 | ||
2338 | template<typename _Protocol> | |
2339 | const void* | |
2340 | data(const _Protocol&) const noexcept | |
2341 | { return std::addressof(_M_value); } | |
2342 | ||
2343 | template<typename _Protocol> | |
2344 | size_t | |
2345 | size(const _Protocol& __p) const noexcept | |
2346 | { | |
2347 | return __p.family() == AF_INET6 | |
2348 | ? sizeof(_M_value._M_v6) : sizeof(_M_value._M_v4); | |
2349 | } | |
2350 | ||
2351 | protected: | |
2352 | union { | |
2353 | unsigned _M_v6; | |
2354 | in_addr _M_v4; | |
2355 | } _M_value; | |
2356 | }; | |
2357 | ||
2358 | /// Set the default number of hops (TTL) for outbound datagrams. | |
2359 | struct hops : __sockopt_crtp<hops> | |
2360 | { | |
2361 | using __sockopt_crtp::__sockopt_crtp; | |
2362 | ||
2363 | template<typename _Protocol> | |
2364 | int | |
2365 | level(const _Protocol& __p) const noexcept | |
2366 | { return __p.family() == AF_INET6 ? IPPROTO_IPV6 : IPPROTO_IP; } | |
2367 | ||
2368 | template<typename _Protocol> | |
2369 | int | |
2370 | name(const _Protocol& __p) const noexcept | |
2371 | { | |
2372 | return __p.family() == AF_INET6 | |
2373 | ? IPV6_MULTICAST_HOPS : IP_MULTICAST_TTL; | |
2374 | } | |
2375 | }; | |
2376 | ||
2377 | /// Set whether datagrams are delivered back to the local application. | |
2378 | struct enable_loopback : __sockopt_crtp<enable_loopback> | |
2379 | { | |
2380 | using __sockopt_crtp::__sockopt_crtp; | |
2381 | ||
2382 | template<typename _Protocol> | |
2383 | int | |
2384 | level(const _Protocol& __p) const noexcept | |
2385 | { return __p.family() == AF_INET6 ? IPPROTO_IPV6 : IPPROTO_IP; } | |
2386 | ||
2387 | template<typename _Protocol> | |
2388 | int | |
2389 | name(const _Protocol& __p) const noexcept | |
2390 | { | |
2391 | return __p.family() == AF_INET6 | |
2392 | ? IPV6_MULTICAST_LOOP : IP_MULTICAST_LOOP; | |
2393 | } | |
2394 | }; | |
2395 | ||
e5989e71 JW |
2396 | } // namespace multicast |
2397 | ||
f0b88346 | 2398 | /// @} |
e5989e71 JW |
2399 | |
2400 | } // namespace ip | |
2401 | } // namespace v1 | |
2402 | } // namespace net | |
2403 | } // namespace experimental | |
2404 | ||
2405 | template<> | |
2406 | struct is_error_condition_enum<experimental::net::v1::ip::resolver_errc> | |
2407 | : public true_type {}; | |
2408 | ||
2409 | // hash support | |
2410 | template<typename _Tp> struct hash; | |
2411 | template<> | |
2412 | struct hash<experimental::net::v1::ip::address> | |
2413 | : __hash_base<size_t, experimental::net::v1::ip::address> | |
2414 | { | |
2415 | size_t | |
d7aa21a3 | 2416 | operator()(const experimental::net::v1::ip::address& __a) const |
e5989e71 JW |
2417 | { |
2418 | if (__a.is_v4()) | |
2419 | return _Hash_impl::hash(__a.to_v4()); | |
2420 | else | |
2421 | return _Hash_impl::hash(__a.to_v6()); | |
2422 | } | |
2423 | }; | |
2424 | ||
2425 | template<> | |
2426 | struct hash<experimental::net::v1::ip::address_v4> | |
2427 | : __hash_base<size_t, experimental::net::v1::ip::address_v4> | |
2428 | { | |
2429 | size_t | |
d7aa21a3 | 2430 | operator()(const experimental::net::v1::ip::address_v4& __a) const |
e5989e71 JW |
2431 | { return _Hash_impl::hash(__a.to_bytes()); } |
2432 | }; | |
2433 | ||
2434 | template<> struct hash<experimental::net::v1::ip::address_v6> | |
2435 | : __hash_base<size_t, experimental::net::v1::ip::address_v6> | |
2436 | { | |
2437 | size_t | |
d7aa21a3 | 2438 | operator()(const experimental::net::v1::ip::address_v6& __a) const |
e5989e71 JW |
2439 | { return _Hash_impl::hash(__a.to_bytes()); } |
2440 | }; | |
2441 | ||
a70a4be9 | 2442 | _GLIBCXX_END_NAMESPACE_VERSION |
e5989e71 JW |
2443 | } // namespace std |
2444 | ||
2445 | #endif // C++14 | |
2446 | ||
2447 | #endif // _GLIBCXX_EXPERIMENTAL_INTERNET |