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41d93087 | 1 | /* |
41d93087 | 2 | * DEBUG: section 14 IP Storage and Handling |
3 | * AUTHOR: Amos Jeffries | |
4 | * | |
5 | * SQUID Internet Object Cache http://squid.nlanr.net/Squid/ | |
6 | * ---------------------------------------------------------- | |
7 | * | |
8 | * Squid is the result of efforts by numerous individuals from the | |
9 | * Internet community. Development is led by Duane Wessels of the | |
10 | * National Laboratory for Applied Network Research and funded by the | |
11 | * National Science Foundation. Squid is Copyrighted (C) 1998 by | |
12 | * the Regents of the University of California. Please see the | |
13 | * COPYRIGHT file for full details. Squid incorporates software | |
14 | * developed and/or copyrighted by other sources. Please see the | |
15 | * CREDITS file for full details. | |
16 | * | |
565b233e | 17 | * This IpAddress code is copyright (C) 2007 by Treehouse Networks Ltd |
41d93087 | 18 | * of New Zealand. It is published and Lisenced as an extension of |
19 | * squid under the same conditions as the main squid application. | |
20 | * | |
21 | * This program is free software; you can redistribute it and/or modify | |
22 | * it under the terms of the GNU General Public License as published by | |
23 | * the Free Software Foundation; either version 2 of the License, or | |
24 | * (at your option) any later version. | |
26ac0430 | 25 | * |
41d93087 | 26 | * This program is distributed in the hope that it will be useful, |
27 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
28 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
29 | * GNU General Public License for more details. | |
26ac0430 | 30 | * |
41d93087 | 31 | * You should have received a copy of the GNU General Public License |
32 | * along with this program; if not, write to the Free Software | |
33 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA. | |
34 | * | |
35 | */ | |
36 | ||
37 | #include "config.h" | |
82b7abe3 | 38 | #include "Debug.h" |
9837e5f0 | 39 | #include "ip/IpAddress.h" |
1ef0b9ce AJ |
40 | #include "util.h" |
41 | ||
41d93087 | 42 | |
43 | #if HAVE_ASSERT_H | |
44 | #include <assert.h> | |
45 | #endif | |
46 | #if HAVE_STDLIB_H | |
47 | #include <stdlib.h> | |
48 | #endif | |
49 | #if HAVE_STRING_H | |
50 | #include <string.h> | |
51 | #endif | |
52 | #if HAVE_ARPA_INET_H | |
53 | #include <arpa/inet.h> /* inet_ntoa() */ | |
54 | #endif | |
55 | ||
41d93087 | 56 | #ifdef INET6 |
57 | #error "INET6 defined but has been deprecated! Try running bootstrap and configure again." | |
58 | #endif | |
59 | ||
41d93087 | 60 | #if !USE_IPV6 |
61 | // So there are some places where I will drop to using Macros too. | |
62 | // At least I can restrict them to this file so they don't corrupt the app with C code. | |
63 | # define sin6_addr sin_addr | |
64 | # define sin6_port sin_port | |
65 | # define sin6_family sin_family | |
66 | #undef s6_addr | |
67 | # define s6_addr s_addr | |
68 | #endif | |
69 | ||
41d93087 | 70 | /* Debugging only. Dump the address content when a fatal assert is encountered. */ |
71 | #if USE_IPV6 | |
72 | #define IASSERT(a,b) \ | |
68b313c2 | 73 | if(!(b)){ printf("assert \"%s\" at line %d\n", a, __LINE__); \ |
565b233e | 74 | printf("IpAddress invalid? with IsIPv4()=%c, IsIPv6()=%c\n",(IsIPv4()?'T':'F'),(IsIPv6()?'T':'F')); \ |
41d93087 | 75 | printf("ADDRESS:"); \ |
76 | for(unsigned int i = 0; i < sizeof(m_SocketAddr.sin6_addr); i++) { \ | |
77 | printf(" %x", m_SocketAddr.sin6_addr.s6_addr[i]); \ | |
78 | } printf("\n"); assert(b); \ | |
79 | } | |
80 | #else | |
81 | #define IASSERT(a,b) \ | |
68b313c2 | 82 | if(!(b)){ printf("assert \"%s\" at line %d\n", a, __LINE__); \ |
565b233e | 83 | printf("IpAddress invalid? with IsIPv4()=%c, IsIPv6()=%c\n",(IsIPv4()?'T':'F'),(IsIPv6()?'T':'F')); \ |
41d93087 | 84 | printf("ADDRESS: %x\n", (unsigned int)m_SocketAddr.sin_addr.s_addr); \ |
85 | assert(b); \ | |
86 | } | |
87 | #endif | |
88 | ||
23f6a720 | 89 | IpAddress::IpAddress() |
41d93087 | 90 | { |
91 | SetEmpty(); | |
92 | } | |
93 | ||
23f6a720 | 94 | IpAddress::~IpAddress() |
41d93087 | 95 | { |
565b233e | 96 | memset(this,0,sizeof(IpAddress)); |
41d93087 | 97 | } |
98 | ||
99 | int | |
565b233e | 100 | IpAddress::GetCIDR() const |
41d93087 | 101 | { |
102 | uint8_t shift,byte; | |
103 | uint8_t bit,caught; | |
104 | int len = 0; | |
105 | #if USE_IPV6 | |
df9617b9 | 106 | const uint8_t *ptr= m_SocketAddr.sin6_addr.s6_addr; |
41d93087 | 107 | #else |
df9617b9 | 108 | const uint8_t *ptr= (uint8_t *)&m_SocketAddr.sin_addr.s_addr; |
41d93087 | 109 | #endif |
110 | ||
111 | /* Let's scan all the bits from Most Significant to Least */ | |
112 | /* Until we find an "0" bit. Then, we return */ | |
113 | shift=0; | |
114 | ||
115 | #if USE_IPV6 | |
116 | /* return IPv4 CIDR for any Mapped address */ | |
117 | /* Thus only check the mapped bit */ | |
118 | ||
26ac0430 | 119 | if ( !IsIPv6() ) { |
41d93087 | 120 | shift = 12; |
121 | } | |
122 | ||
123 | #endif | |
124 | ||
e1381638 | 125 | for (; shift<sizeof(m_SocketAddr.sin6_addr) ; shift++) { |
41d93087 | 126 | byte= *(ptr+shift); |
127 | ||
128 | if (byte == 0xFF) { | |
129 | len += 8; | |
130 | continue ; /* A short-cut */ | |
131 | } | |
132 | ||
133 | for (caught = 0 , bit= 7 ; !caught && (bit <= 7); bit--) { | |
134 | caught = ((byte & 0x80) == 0x00); /* Found a '0' at 'bit' ? */ | |
135 | ||
136 | if (!caught) | |
137 | len++; | |
138 | ||
139 | byte <<= 1; | |
140 | } | |
141 | ||
142 | if (caught) | |
143 | break; /* We have found the most significant "0" bit. */ | |
144 | } | |
145 | ||
146 | return len; | |
147 | } | |
148 | ||
23f6a720 | 149 | const int IpAddress::ApplyMask(IpAddress const &mask_addr) |
41d93087 | 150 | { |
151 | uint32_t *p1 = (uint32_t*)(&m_SocketAddr.sin6_addr); | |
152 | uint32_t const *p2 = (uint32_t const *)(&mask_addr.m_SocketAddr.sin6_addr); | |
153 | unsigned int blen = sizeof(m_SocketAddr.sin6_addr)/sizeof(uint32_t); | |
154 | unsigned int changes = 0; | |
155 | ||
156 | for (unsigned int i = 0; i < blen; i++) { | |
26ac0430 | 157 | if ((p1[i] & p2[i]) != p1[i]) |
41d93087 | 158 | changes++; |
159 | ||
160 | p1[i] &= p2[i]; | |
161 | } | |
162 | ||
b5587d15 AJ |
163 | /* we have found a situation where mask forms or destroys a IPv4 map. */ |
164 | check4Mapped(); | |
165 | ||
41d93087 | 166 | return changes; |
167 | } | |
168 | ||
565b233e | 169 | bool IpAddress::ApplyMask(const unsigned int cidr, int mtype) |
41d93087 | 170 | { |
171 | uint8_t clearbits = 0; | |
172 | uint8_t* p = NULL; | |
173 | ||
174 | #if !USE_IPV6 | |
175 | IASSERT("mtype != AF_INET6", mtype != AF_INET6); /* using IPv6 in IPv4 is invalid. */ | |
176 | ||
26ac0430 | 177 | if (mtype == AF_UNSPEC) |
41d93087 | 178 | mtype = AF_INET; |
179 | ||
180 | #else | |
26ac0430 | 181 | if (mtype == AF_UNSPEC) |
41d93087 | 182 | mtype = AF_INET6; |
183 | ||
184 | #endif | |
185 | ||
186 | // validation and short-cuts. | |
187 | if (cidr > 128) | |
188 | return false; | |
189 | ||
190 | if (cidr > 32 && mtype == AF_INET) | |
191 | return false; | |
192 | ||
2c1b9590 AJ |
193 | if (cidr == 0) { |
194 | /* CIDR /0 is NoAddr regardless of the IPv4/IPv6 protocol */ | |
195 | SetNoAddr(); | |
196 | return true; | |
197 | } | |
198 | ||
41d93087 | 199 | clearbits = (uint8_t)( (mtype==AF_INET6?128:32) -cidr); |
200 | ||
201 | // short-cut | |
26ac0430 | 202 | if (clearbits == 0) |
41d93087 | 203 | return true; |
204 | ||
205 | #if USE_IPV6 | |
206 | ||
207 | p = (uint8_t*)(&m_SocketAddr.sin6_addr) + 15; | |
208 | ||
209 | #else | |
210 | ||
211 | p = (uint8_t*)(&m_SocketAddr.sin_addr) + 3; | |
212 | ||
213 | #endif | |
214 | ||
215 | for (; clearbits>0 && p >= (uint8_t*)&m_SocketAddr.sin6_addr ; p-- ) { | |
26ac0430 | 216 | if (clearbits < 8) { |
41d93087 | 217 | *p &= ((0xFF << clearbits) & 0xFF); |
218 | clearbits = 0; | |
219 | } else { | |
220 | *p &= 0x00; | |
221 | clearbits -= 8; | |
222 | } | |
223 | } | |
224 | ||
225 | return true; | |
226 | } | |
227 | ||
565b233e | 228 | bool IpAddress::IsSockAddr() const |
41d93087 | 229 | { |
230 | return (m_SocketAddr.sin6_port != 0); | |
231 | } | |
232 | ||
565b233e | 233 | bool IpAddress::IsIPv4() const |
41d93087 | 234 | { |
235 | #if USE_IPV6 | |
2c8fff41 | 236 | return IsAnyAddr() || IsNoAddr() || IN6_IS_ADDR_V4MAPPED( &m_SocketAddr.sin6_addr ); |
41d93087 | 237 | #else |
238 | return true; // enforce IPv4 in IPv4-only mode. | |
239 | #endif | |
240 | } | |
241 | ||
565b233e | 242 | bool IpAddress::IsIPv6() const |
41d93087 | 243 | { |
244 | #if USE_IPV6 | |
2c8fff41 | 245 | return IsAnyAddr() || IsNoAddr() || !IN6_IS_ADDR_V4MAPPED( &m_SocketAddr.sin6_addr ); |
41d93087 | 246 | #else |
247 | return false; // enforce IPv4 in IPv4-only mode. | |
248 | #endif | |
249 | } | |
250 | ||
565b233e | 251 | bool IpAddress::IsAnyAddr() const |
41d93087 | 252 | { |
253 | #if USE_IPV6 | |
2c8fff41 | 254 | return IN6_IS_ADDR_UNSPECIFIED( &m_SocketAddr.sin6_addr ); |
41d93087 | 255 | #else |
41d93087 | 256 | return (INADDR_ANY == m_SocketAddr.sin_addr.s_addr); |
257 | #endif | |
258 | } | |
259 | ||
260 | /// NOTE: Does NOT clear the Port stored. Ony the Address and Type. | |
565b233e | 261 | void IpAddress::SetAnyAddr() |
41d93087 | 262 | { |
263 | #if USE_IPV6 | |
264 | memset(&m_SocketAddr.sin6_addr, 0, sizeof(struct in6_addr) ); | |
265 | #else | |
266 | memset(&m_SocketAddr.sin_addr, 0, sizeof(struct in_addr) ); | |
267 | #endif | |
268 | } | |
269 | ||
565b233e AJ |
270 | /// NOTE: completely empties the IpAddress structure. Address, Port, Type, everything. |
271 | void IpAddress::SetEmpty() | |
41d93087 | 272 | { |
273 | memset(&m_SocketAddr, 0, sizeof(m_SocketAddr) ); | |
274 | } | |
275 | ||
41d93087 | 276 | #if USE_IPV6 |
c0248e14 | 277 | const struct in6_addr IpAddress::v4_localhost = {{{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
d5b4b6c7 | 278 | 0x00, 0x00, 0xff, 0xff, 0x7f, 0x00, 0x00, 0x01 }} |
c0248e14 HN |
279 | }; |
280 | const struct in6_addr IpAddress::v4_anyaddr = {{{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
d5b4b6c7 | 281 | 0x00, 0x00, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00 }} |
c0248e14 HN |
282 | }; |
283 | const struct in6_addr IpAddress::v6_noaddr = {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
d5b4b6c7 | 284 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }} |
c0248e14 HN |
285 | }; |
286 | #endif | |
287 | ||
41d93087 | 288 | |
c0248e14 HN |
289 | bool IpAddress::SetIPv4() |
290 | { | |
291 | #if USE_IPV6 | |
26ac0430 | 292 | if ( IsLocalhost() ) { |
2c8fff41 | 293 | m_SocketAddr.sin6_addr = v4_localhost; |
41d93087 | 294 | return true; |
295 | } | |
41d93087 | 296 | |
26ac0430 | 297 | if ( IsAnyAddr() ) { |
c0248e14 | 298 | m_SocketAddr.sin6_addr = v4_anyaddr; |
41d93087 | 299 | return true; |
300 | } | |
301 | ||
26ac0430 | 302 | if ( IsIPv4()) |
41d93087 | 303 | return true; |
304 | ||
305 | // anything non-IPv4 and non-convertable is BAD. | |
306 | return false; | |
307 | #else | |
308 | return true; // Always IPv4 in IPv4-only builds. | |
309 | #endif | |
310 | } | |
311 | ||
565b233e | 312 | bool IpAddress::IsLocalhost() const |
41d93087 | 313 | { |
314 | #if USE_IPV6 | |
2c8fff41 AJ |
315 | return IN6_IS_ADDR_LOOPBACK( &m_SocketAddr.sin6_addr ) || IN6_ARE_ADDR_EQUAL( &m_SocketAddr.sin6_addr, &v4_localhost ); |
316 | #else | |
41d93087 | 317 | return (htonl(0x7F000001) == m_SocketAddr.sin_addr.s_addr); |
318 | #endif | |
319 | } | |
320 | ||
565b233e | 321 | void IpAddress::SetLocalhost() |
41d93087 | 322 | { |
323 | #if USE_IPV6 | |
01ed4c98 | 324 | m_SocketAddr.sin6_addr = in6addr_loopback; |
41d93087 | 325 | m_SocketAddr.sin6_family = AF_INET6; |
41d93087 | 326 | #else |
327 | m_SocketAddr.sin_addr.s_addr = htonl(0x7F000001); | |
328 | m_SocketAddr.sin_family = AF_INET; | |
329 | #endif | |
330 | } | |
331 | ||
a98c2da5 AJ |
332 | bool IpAddress::IsSiteLocal6() const |
333 | { | |
334 | #if USE_IPV6 | |
01ed4c98 | 335 | return IN6_IS_ADDR_SITELOCAL( &m_SocketAddr.sin6_addr ); |
a98c2da5 AJ |
336 | #else |
337 | return false; | |
338 | #endif | |
339 | } | |
340 | ||
341 | bool IpAddress::IsSlaac() const | |
342 | { | |
343 | #if USE_IPV6 | |
2c8fff41 AJ |
344 | return m_SocketAddr.sin6_addr.s6_addr[10] == htons(0xff) && |
345 | m_SocketAddr.sin6_addr.s6_addr[11] == htons(0xfe); | |
a98c2da5 AJ |
346 | #else |
347 | return false; | |
348 | #endif | |
349 | } | |
350 | ||
565b233e | 351 | bool IpAddress::IsNoAddr() const |
41d93087 | 352 | { |
353 | // IFF the address == 0xff..ff (all ones) | |
354 | #if USE_IPV6 | |
2c8fff41 AJ |
355 | return IN6_ARE_ADDR_EQUAL( &m_SocketAddr.sin6_addr, &v6_noaddr ); |
356 | #else | |
41d93087 | 357 | return 0xFFFFFFFF == m_SocketAddr.sin_addr.s_addr; |
358 | #endif | |
359 | } | |
360 | ||
565b233e | 361 | void IpAddress::SetNoAddr() |
41d93087 | 362 | { |
363 | #if USE_IPV6 | |
c0248e14 | 364 | memset(&m_SocketAddr.sin6_addr, 0xFF, sizeof(struct in6_addr) ); |
41d93087 | 365 | m_SocketAddr.sin6_family = AF_INET6; |
366 | #else | |
c0248e14 | 367 | memset(&m_SocketAddr.sin_addr, 0xFF, sizeof(struct in_addr) ); |
41d93087 | 368 | m_SocketAddr.sin_family = AF_INET; |
369 | #endif | |
370 | } | |
371 | ||
372 | #if USE_IPV6 | |
373 | ||
565b233e | 374 | bool IpAddress::GetReverseString6(char buf[MAX_IPSTRLEN], const struct in6_addr &dat) const |
41d93087 | 375 | { |
376 | char *p = buf; | |
377 | unsigned char const *r = dat.s6_addr; | |
378 | ||
379 | /* RFC1886 says: */ | |
380 | /* 4321:0:1:2:3:4:567:89ab */ | |
381 | /* must be sent */ | |
382 | /* b.a.9.8.7.6.5.0.4.0.0.0.3.0.0.0.2.0.0.0.1.0.0.0.0.0.0.0.1.2.3.4.ip6.int. */ | |
383 | ||
384 | /* Work from the binary field. Anything else may have representation changes. */ | |
385 | /* The sin6_port and sin6_addr members shall be in network byte order. */ | |
386 | ||
387 | /* Compile Err: 'Too many arguments for format. */ | |
388 | ||
26ac0430 | 389 | for (int i = 15; i >= 0; i--, p+=4) { |
41d93087 | 390 | snprintf(p, 5, "%x.%x.", ((r[i])&0xf), (((r[i])>>4)&0xf) ); |
391 | } | |
392 | ||
393 | /* RFC3152 says: */ | |
394 | /* ip6.int is now deprecated TLD, use ip6.arpa instead. */ | |
395 | snprintf(p,10,"ip6.arpa."); | |
396 | ||
397 | return true; | |
398 | } | |
399 | ||
400 | #endif | |
401 | ||
565b233e | 402 | bool IpAddress::GetReverseString4(char buf[MAX_IPSTRLEN], const struct in_addr &dat) const |
41d93087 | 403 | { |
404 | unsigned int i = (unsigned int) ntohl(dat.s_addr); | |
405 | snprintf(buf, 32, "%u.%u.%u.%u.in-addr.arpa.", | |
406 | i & 255, | |
407 | (i >> 8) & 255, | |
408 | (i >> 16) & 255, | |
409 | (i >> 24) & 255); | |
410 | return true; | |
411 | } | |
412 | ||
565b233e | 413 | bool IpAddress::GetReverseString(char buf[MAX_IPSTRLEN], int show_type) const |
41d93087 | 414 | { |
415 | ||
26ac0430 | 416 | if (show_type == AF_UNSPEC) { |
41d93087 | 417 | #if USE_IPV6 |
418 | show_type = IsIPv6() ? AF_INET6 : AF_INET ; | |
419 | #else | |
420 | show_type = AF_INET; | |
421 | #endif | |
422 | } | |
423 | ||
424 | if (show_type == AF_INET && IsIPv4()) { | |
425 | #if USE_IPV6 | |
2c8fff41 AJ |
426 | struct in_addr* tmp = (struct in_addr*)&m_SocketAddr.sin6_addr.s6_addr[12]; |
427 | return GetReverseString4(buf, *tmp); | |
41d93087 | 428 | } else if ( show_type == AF_INET6 && IsIPv6() ) { |
429 | return GetReverseString6(buf, m_SocketAddr.sin6_addr); | |
430 | #else | |
431 | return GetReverseString4(buf, m_SocketAddr.sin_addr); | |
432 | #endif | |
433 | } | |
434 | ||
435 | debugs(14,0, "Unable to convert '" << NtoA(buf,MAX_IPSTRLEN) << "' to the rDNS type requested."); | |
436 | ||
437 | buf[0] = '\0'; | |
438 | ||
439 | return false; | |
440 | } | |
441 | ||
9fb4efad | 442 | IpAddress& IpAddress::operator =(const IpAddress &s) |
41d93087 | 443 | { |
565b233e | 444 | memcpy(this, &s, sizeof(IpAddress)); |
41d93087 | 445 | return *this; |
446 | }; | |
447 | ||
23f6a720 | 448 | IpAddress::IpAddress(const char*s) |
41d93087 | 449 | { |
450 | SetEmpty(); | |
451 | operator=(s); | |
452 | } | |
453 | ||
565b233e | 454 | bool IpAddress::operator =(const char* s) |
41d93087 | 455 | { |
456 | return LookupHostIP(s, true); | |
457 | } | |
458 | ||
565b233e | 459 | bool IpAddress::GetHostByName(const char* s) |
41d93087 | 460 | { |
461 | return LookupHostIP(s, false); | |
462 | } | |
463 | ||
565b233e | 464 | bool IpAddress::LookupHostIP(const char *s, bool nodns) |
41d93087 | 465 | { |
466 | int err = 0; | |
467 | ||
468 | short port = 0; | |
469 | ||
470 | struct addrinfo *res = NULL; | |
471 | ||
472 | struct addrinfo want; | |
473 | ||
474 | memset(&want, 0, sizeof(struct addrinfo)); | |
26ac0430 | 475 | if (nodns) { |
41d93087 | 476 | want.ai_flags = AI_NUMERICHOST; // prevent actual DNS lookups! |
477 | } | |
478 | #if !USE_IPV6 | |
479 | want.ai_family = AF_INET; | |
480 | #endif | |
481 | ||
482 | if ( (err = xgetaddrinfo(s, NULL, &want, &res)) != 0) { | |
3f697f0d | 483 | debugs(14,3, HERE << "Given Bad IP '" << s << "': " << xgai_strerror(err) ); |
41d93087 | 484 | /* free the memory xgetaddrinfo() dynamically allocated. */ |
26ac0430 | 485 | if (res) { |
41d93087 | 486 | xfreeaddrinfo(res); |
487 | res = NULL; | |
488 | } | |
489 | return false; | |
490 | } | |
491 | ||
492 | /* | |
493 | * NP: =(sockaddr_*) may alter the port. we don't want that. | |
494 | * all we have been given as input was an IPA. | |
495 | */ | |
496 | port = GetPort(); | |
497 | operator=(*res); | |
498 | SetPort(port); | |
499 | ||
500 | /* free the memory xgetaddrinfo() dynamically allocated. */ | |
501 | xfreeaddrinfo(res); | |
502 | ||
503 | res = NULL; | |
504 | ||
505 | return true; | |
506 | } | |
507 | ||
23f6a720 | 508 | IpAddress::IpAddress(struct sockaddr_in const &s) |
41d93087 | 509 | { |
510 | SetEmpty(); | |
511 | operator=(s); | |
512 | }; | |
513 | ||
23f6a720 | 514 | IpAddress& IpAddress::operator =(struct sockaddr_in const &s) |
41d93087 | 515 | { |
516 | #if USE_IPV6 | |
517 | Map4to6((const in_addr)s.sin_addr, m_SocketAddr.sin6_addr); | |
518 | m_SocketAddr.sin6_port = s.sin_port; | |
519 | m_SocketAddr.sin6_family = AF_INET6; | |
520 | #else | |
521 | ||
522 | memcpy(&m_SocketAddr, &s, sizeof(struct sockaddr_in)); | |
523 | #endif | |
524 | ||
b5587d15 AJ |
525 | /* maintain stored family values properly */ |
526 | check4Mapped(); | |
527 | ||
41d93087 | 528 | return *this; |
529 | }; | |
530 | ||
23f6a720 | 531 | IpAddress& IpAddress::operator =(const struct sockaddr_storage &s) |
0e1a47f0 AJ |
532 | { |
533 | #if USE_IPV6 | |
534 | /* some AF_* magic to tell socket types apart and what we need to do */ | |
26ac0430 | 535 | if (s.ss_family == AF_INET6) { |
0e1a47f0 | 536 | memcpy(&m_SocketAddr, &s, sizeof(struct sockaddr_in)); |
26ac0430 | 537 | } else { // convert it to our storage mapping. |
0e1a47f0 AJ |
538 | struct sockaddr_in *sin = (struct sockaddr_in*)&s; |
539 | m_SocketAddr.sin6_port = sin->sin_port; | |
540 | Map4to6( sin->sin_addr, m_SocketAddr.sin6_addr); | |
541 | } | |
542 | #else | |
543 | memcpy(&m_SocketAddr, &s, sizeof(struct sockaddr_in)); | |
544 | #endif | |
545 | return *this; | |
546 | }; | |
547 | ||
b5587d15 AJ |
548 | void IpAddress::check4Mapped() |
549 | { | |
550 | // obsolete. | |
551 | // TODO use this NOW to set the sin6_family properly on exporting. not on import. | |
552 | } | |
553 | ||
41d93087 | 554 | #if USE_IPV6 |
23f6a720 | 555 | IpAddress::IpAddress(struct sockaddr_in6 const &s) |
41d93087 | 556 | { |
557 | SetEmpty(); | |
558 | operator=(s); | |
559 | }; | |
560 | ||
23f6a720 | 561 | IpAddress& IpAddress::operator =(struct sockaddr_in6 const &s) |
41d93087 | 562 | { |
563 | memcpy(&m_SocketAddr, &s, sizeof(struct sockaddr_in6)); | |
b5587d15 AJ |
564 | |
565 | /* maintain address family properly */ | |
566 | check4Mapped(); | |
41d93087 | 567 | return *this; |
568 | }; | |
569 | ||
570 | #endif | |
571 | ||
23f6a720 | 572 | IpAddress::IpAddress(struct in_addr const &s) |
41d93087 | 573 | { |
574 | SetEmpty(); | |
575 | operator=(s); | |
576 | }; | |
577 | ||
23f6a720 | 578 | IpAddress& IpAddress::operator =(struct in_addr const &s) |
41d93087 | 579 | { |
580 | #if USE_IPV6 | |
581 | Map4to6((const in_addr)s, m_SocketAddr.sin6_addr); | |
582 | m_SocketAddr.sin6_family = AF_INET6; | |
b5587d15 | 583 | |
41d93087 | 584 | #else |
b5587d15 | 585 | |
41d93087 | 586 | memcpy(&m_SocketAddr.sin_addr, &s, sizeof(struct in_addr)); |
b5587d15 | 587 | |
41d93087 | 588 | #endif |
b5587d15 AJ |
589 | |
590 | /* maintain stored family type properly */ | |
591 | check4Mapped(); | |
592 | ||
41d93087 | 593 | return *this; |
594 | }; | |
595 | ||
596 | #if USE_IPV6 | |
597 | ||
23f6a720 | 598 | IpAddress::IpAddress(struct in6_addr const &s) |
41d93087 | 599 | { |
600 | SetEmpty(); | |
601 | operator=(s); | |
602 | }; | |
603 | ||
23f6a720 | 604 | IpAddress& IpAddress::operator =(struct in6_addr const &s) |
41d93087 | 605 | { |
b5587d15 | 606 | |
41d93087 | 607 | memcpy(&m_SocketAddr.sin6_addr, &s, sizeof(struct in6_addr)); |
608 | m_SocketAddr.sin6_family = AF_INET6; | |
b5587d15 AJ |
609 | |
610 | /* maintain address family type properly */ | |
611 | check4Mapped(); | |
612 | ||
41d93087 | 613 | return *this; |
614 | }; | |
615 | ||
616 | #endif | |
617 | ||
9fb4efad | 618 | IpAddress::IpAddress(const IpAddress &s) |
41d93087 | 619 | { |
620 | SetEmpty(); | |
621 | operator=(s); | |
622 | } | |
623 | ||
9fb4efad | 624 | IpAddress::IpAddress(IpAddress *s) |
41d93087 | 625 | { |
626 | SetEmpty(); | |
1a1f4104 | 627 | if (s) |
af6a12ee | 628 | memcpy(this, s, sizeof(IpAddress)); |
41d93087 | 629 | } |
630 | ||
23f6a720 | 631 | IpAddress::IpAddress(const struct hostent &s) |
41d93087 | 632 | { |
633 | SetEmpty(); | |
634 | operator=(s); | |
635 | } | |
636 | ||
565b233e | 637 | bool IpAddress::operator =(const struct hostent &s) |
41d93087 | 638 | { |
639 | ||
640 | struct in_addr* ipv4 = NULL; | |
641 | ||
642 | struct in6_addr* ipv6 = NULL; | |
643 | ||
644 | //struct hostent { | |
645 | // char *h_name; /* official name of host */ | |
646 | // char **h_aliases; /* alias list */ | |
647 | // int h_addrtype; /* host address type */ | |
648 | // int h_length; /* length of address */ | |
649 | // char **h_addr_list; /* list of addresses */ | |
650 | //} | |
651 | ||
26ac0430 | 652 | switch (s.h_addrtype) { |
41d93087 | 653 | |
654 | case AF_INET: | |
655 | ipv4 = (in_addr*)(s.h_addr_list[0]); | |
656 | /* this */ | |
657 | operator=(*ipv4); | |
658 | break; | |
659 | ||
660 | case AF_INET6: | |
661 | ipv6 = (in6_addr*)(s.h_addr_list[0]); | |
662 | #if USE_IPV6 | |
663 | /* this */ | |
664 | operator=(*ipv6); | |
665 | #else | |
666 | ||
667 | debugs(14,1, HERE << "Discarded IPv6 Address. Protocol disabled."); | |
668 | ||
669 | // FIXME see if there is another address in the list that might be usable ?? | |
670 | return false; | |
671 | #endif | |
672 | ||
673 | break; | |
674 | ||
675 | default: | |
26ac0430 AJ |
676 | IASSERT("false",false); |
677 | return false; | |
41d93087 | 678 | } |
679 | ||
680 | return true; | |
681 | } | |
682 | ||
23f6a720 | 683 | IpAddress::IpAddress(const struct addrinfo &s) |
41d93087 | 684 | { |
685 | SetEmpty(); | |
686 | operator=(s); | |
687 | } | |
688 | ||
565b233e | 689 | bool IpAddress::operator =(const struct addrinfo &s) |
41d93087 | 690 | { |
691 | ||
692 | struct sockaddr_in* ipv4 = NULL; | |
693 | ||
694 | struct sockaddr_in6* ipv6 = NULL; | |
695 | ||
696 | //struct addrinfo { | |
697 | // int ai_flags; /* input flags */ | |
698 | // int ai_family; /* protocol family for socket */ | |
699 | // int ai_socktype; /* socket type */ | |
700 | // int ai_protocol; /* protocol for socket */ | |
701 | // socklen_t ai_addrlen; /* length of socket-address */ | |
702 | // struct sockaddr *ai_addr; /* socket-address for socket */ | |
703 | // char *ai_canonname; /* canonical name for service location */ | |
704 | // struct addrinfo *ai_next; /* pointer to next in list */ | |
705 | //} | |
706 | ||
26ac0430 | 707 | switch (s.ai_family) { |
41d93087 | 708 | |
709 | case AF_INET: | |
710 | ipv4 = (sockaddr_in*)(s.ai_addr); | |
711 | /* this */ | |
712 | assert(ipv4); | |
713 | operator=(*ipv4); | |
714 | break; | |
715 | ||
716 | case AF_INET6: | |
717 | ipv6 = (sockaddr_in6*)(s.ai_addr); | |
718 | #if USE_IPV6 | |
719 | /* this */ | |
720 | assert(ipv6); | |
721 | operator=(*ipv6); | |
722 | #else | |
723 | ||
724 | debugs(14,1, HERE << "Discarded IPv6 Address. Protocol disabled."); | |
725 | ||
726 | // see if there is another address in the list that might be usable ?? | |
727 | ||
728 | if (s.ai_next) | |
729 | return operator=(*s.ai_next); | |
730 | else | |
731 | return false; | |
732 | ||
733 | #endif | |
734 | break; | |
735 | ||
736 | case AF_UNSPEC: | |
737 | default: | |
738 | // attempt to handle partially initialised addrinfo. | |
739 | // such as those where data only comes from getsockopt() | |
26ac0430 | 740 | if (s.ai_addr != NULL) { |
41d93087 | 741 | #if USE_IPV6 |
26ac0430 | 742 | if (s.ai_addrlen == sizeof(struct sockaddr_in6)) { |
41d93087 | 743 | operator=(*((struct sockaddr_in6*)s.ai_addr)); |
744 | return true; | |
26ac0430 | 745 | } else |
41d93087 | 746 | #endif |
26ac0430 AJ |
747 | if (s.ai_addrlen == sizeof(struct sockaddr_in)) { |
748 | operator=(*((struct sockaddr_in*)s.ai_addr)); | |
749 | return true; | |
750 | } | |
41d93087 | 751 | } |
752 | return false; | |
753 | } | |
754 | ||
755 | return true; | |
756 | } | |
757 | ||
565b233e | 758 | void IpAddress::GetAddrInfo(struct addrinfo *&dst, int force) const |
41d93087 | 759 | { |
26ac0430 | 760 | if (dst == NULL) { |
41d93087 | 761 | dst = new addrinfo; |
762 | } | |
763 | ||
764 | memset(dst, 0, sizeof(struct addrinfo)); | |
765 | ||
766 | // set defaults | |
767 | dst->ai_flags = AI_NUMERICHOST; | |
768 | ||
26ac0430 | 769 | if (dst->ai_socktype == 0) |
41d93087 | 770 | dst->ai_socktype = SOCK_STREAM; |
771 | ||
26ac0430 | 772 | if (dst->ai_socktype == SOCK_STREAM // implies TCP |
41d93087 | 773 | && dst->ai_protocol == 0) |
774 | dst->ai_protocol = IPPROTO_TCP; | |
775 | ||
26ac0430 | 776 | if (dst->ai_socktype == SOCK_DGRAM // implies UDP |
41d93087 | 777 | && dst->ai_protocol == 0) |
778 | dst->ai_protocol = IPPROTO_UDP; | |
779 | ||
780 | #if USE_IPV6 | |
26ac0430 | 781 | if ( force == AF_INET6 || (force == AF_UNSPEC && IsIPv6()) ) { |
41d93087 | 782 | dst->ai_addr = (struct sockaddr*)new sockaddr_in6; |
783 | ||
784 | memset(dst->ai_addr,0,sizeof(struct sockaddr_in6)); | |
785 | ||
786 | GetSockAddr(*((struct sockaddr_in6*)dst->ai_addr)); | |
787 | ||
788 | dst->ai_addrlen = sizeof(struct sockaddr_in6); | |
789 | ||
790 | dst->ai_family = ((struct sockaddr_in6*)dst->ai_addr)->sin6_family; | |
9d92af86 AJ |
791 | |
792 | #if 0 | |
793 | /** | |
794 | * Enable only if you must and please report to squid-dev if you find a need for this. | |
795 | * | |
796 | * Vista may need this to cope with dual-stack (unsetting IP6_V6ONLY). | |
797 | * http://msdn.microsoft.com/en-us/library/ms738574(VS.85).aspx | |
798 | * Linux appears to only do some things when its present. | |
799 | * (93) Bad Protocol | |
800 | * FreeBSD dies horribly when using dual-stack with it set. | |
801 | * (43) Protocol not supported | |
802 | */ | |
41d93087 | 803 | dst->ai_protocol = IPPROTO_IPV6; |
9d92af86 AJ |
804 | #endif |
805 | ||
41d93087 | 806 | } else |
807 | #endif | |
26ac0430 | 808 | if ( force == AF_INET || (force == AF_UNSPEC && IsIPv4()) ) { |
41d93087 | 809 | |
810 | dst->ai_addr = (struct sockaddr*)new sockaddr_in; | |
811 | ||
812 | memset(dst->ai_addr,0,sizeof(struct sockaddr_in)); | |
813 | ||
814 | GetSockAddr(*((struct sockaddr_in*)dst->ai_addr)); | |
815 | ||
816 | dst->ai_addrlen = sizeof(struct sockaddr_in); | |
817 | ||
818 | dst->ai_family = ((struct sockaddr_in*)dst->ai_addr)->sin_family; | |
26ac0430 | 819 | } else { |
41d93087 | 820 | IASSERT("false",false); |
821 | } | |
822 | } | |
823 | ||
565b233e | 824 | void IpAddress::InitAddrInfo(struct addrinfo *&ai) const |
41d93087 | 825 | { |
26ac0430 | 826 | if (ai == NULL) { |
41d93087 | 827 | ai = new addrinfo; |
828 | memset(ai,0,sizeof(struct addrinfo)); | |
829 | } | |
830 | ||
831 | // remove any existing data. | |
26ac0430 | 832 | if (ai->ai_addr) delete ai->ai_addr; |
41d93087 | 833 | |
834 | ai->ai_addr = (struct sockaddr*)new sockaddr_in6; | |
835 | memset(ai->ai_addr, 0, sizeof(struct sockaddr_in6)); | |
836 | ||
837 | ai->ai_addrlen = sizeof(struct sockaddr_in6); | |
838 | ||
839 | } | |
840 | ||
565b233e | 841 | void IpAddress::FreeAddrInfo(struct addrinfo *&ai) const |
41d93087 | 842 | { |
26ac0430 | 843 | if (ai == NULL) return; |
41d93087 | 844 | |
26ac0430 | 845 | if (ai->ai_addr) delete ai->ai_addr; |
41d93087 | 846 | |
847 | ai->ai_addr = NULL; | |
848 | ||
849 | ai->ai_addrlen = 0; | |
850 | ||
851 | // NP: name fields are NOT allocated at present. | |
852 | delete ai; | |
853 | ||
854 | ai = NULL; | |
855 | } | |
856 | ||
23f6a720 | 857 | int IpAddress::matchIPAddr(const IpAddress &rhs) const |
41d93087 | 858 | { |
859 | #if USE_IPV6 | |
860 | uint8_t *l = (uint8_t*)m_SocketAddr.sin6_addr.s6_addr; | |
861 | uint8_t *r = (uint8_t*)rhs.m_SocketAddr.sin6_addr.s6_addr; | |
862 | #else | |
863 | uint8_t *l = (uint8_t*)&m_SocketAddr.sin_addr.s_addr; | |
864 | uint8_t *r = (uint8_t*)&rhs.m_SocketAddr.sin_addr.s_addr; | |
865 | #endif | |
866 | ||
867 | // loop a byte-wise compare | |
868 | // NP: match MUST be R-to-L : L-to-R produces inconsistent gt/lt results at varying CIDR | |
869 | // expected difference on CIDR is gt/eq or lt/eq ONLY. | |
26ac0430 | 870 | for (unsigned int i = 0 ; i < sizeof(m_SocketAddr.sin6_addr) ; i++) { |
41d93087 | 871 | |
26ac0430 | 872 | if (l[i] < r[i]) |
41d93087 | 873 | return -1; |
874 | ||
26ac0430 | 875 | if (l[i] > r[i]) |
41d93087 | 876 | return 1; |
877 | } | |
878 | ||
879 | return 0; | |
880 | } | |
881 | ||
23f6a720 | 882 | bool IpAddress::operator ==(const IpAddress &s) const |
41d93087 | 883 | { |
884 | return (0 == matchIPAddr(s)); | |
885 | } | |
886 | ||
23f6a720 | 887 | bool IpAddress::operator !=(const IpAddress &s) const |
41d93087 | 888 | { |
889 | return ! ( operator==(s) ); | |
890 | } | |
891 | ||
23f6a720 | 892 | bool IpAddress::operator <=(const IpAddress &rhs) const |
41d93087 | 893 | { |
26ac0430 | 894 | if (IsAnyAddr() && !rhs.IsAnyAddr()) |
41d93087 | 895 | return true; |
896 | ||
897 | return (matchIPAddr(rhs) <= 0); | |
898 | } | |
899 | ||
23f6a720 | 900 | bool IpAddress::operator >=(const IpAddress &rhs) const |
41d93087 | 901 | { |
26ac0430 | 902 | if (IsNoAddr() && !rhs.IsNoAddr()) |
41d93087 | 903 | return true; |
904 | ||
905 | return ( matchIPAddr(rhs) >= 0); | |
906 | } | |
907 | ||
23f6a720 | 908 | bool IpAddress::operator >(const IpAddress &rhs) const |
41d93087 | 909 | { |
26ac0430 | 910 | if (IsNoAddr() && !rhs.IsNoAddr()) |
41d93087 | 911 | return true; |
912 | ||
913 | return ( matchIPAddr(rhs) > 0); | |
914 | } | |
915 | ||
23f6a720 | 916 | bool IpAddress::operator <(const IpAddress &rhs) const |
41d93087 | 917 | { |
26ac0430 | 918 | if (IsNoAddr() && !rhs.IsNoAddr()) |
41d93087 | 919 | return true; |
920 | ||
921 | return ( matchIPAddr(rhs) < 0); | |
922 | } | |
923 | ||
565b233e | 924 | u_short IpAddress::GetPort() const |
41d93087 | 925 | { |
926 | return ntohs( m_SocketAddr.sin6_port ); | |
927 | } | |
928 | ||
565b233e | 929 | u_short IpAddress::SetPort(u_short prt) |
41d93087 | 930 | { |
931 | m_SocketAddr.sin6_port = htons(prt); | |
932 | ||
933 | return prt; | |
934 | } | |
935 | ||
936 | /** | |
937 | * NtoA Given a buffer writes a readable ascii version of the IPA and/or port stored | |
938 | * | |
939 | * Buffer must be of a size large enough to hold the converted address. | |
940 | * This size is provided in the form of a global defined variable MAX_IPSTRLEN | |
941 | * Should a buffer shorter be provided the string result will be truncated | |
942 | * at the length of the available buffer. | |
943 | * | |
944 | * A copy of the buffer is also returned for simple immediate display. | |
945 | */ | |
565b233e | 946 | char* IpAddress::NtoA(char* buf, const unsigned int blen, int force) const |
41d93087 | 947 | { |
948 | // Ensure we have a buffer. | |
26ac0430 | 949 | if (buf == NULL) { |
41d93087 | 950 | return NULL; |
951 | } | |
952 | ||
953 | /* some external code may have blindly memset a parent. */ | |
954 | /* thats okay, our default is known */ | |
26ac0430 | 955 | if ( IsAnyAddr() ) { |
41d93087 | 956 | #if USE_IPV6 |
d85c3078 | 957 | memcpy(buf,"::\0", min((const unsigned int)3,blen)); |
41d93087 | 958 | #else |
d85c3078 | 959 | memcpy(buf,"0.0.0.0\0", min((const unsigned int)8,blen)); |
41d93087 | 960 | #endif |
961 | return buf; | |
962 | } | |
963 | ||
964 | memset(buf,0,blen); // clear buffer before write | |
965 | ||
966 | /* Pure-IPv6 CANNOT be displayed in IPv4 format. */ | |
967 | /* However IPv4 CAN. */ | |
26ac0430 AJ |
968 | if ( force == AF_INET && !IsIPv4() ) { |
969 | if ( IsIPv6() ) { | |
d85c3078 | 970 | memcpy(buf, "{!IPv4}\0", min((const unsigned int)8,blen)); |
41d93087 | 971 | } |
972 | return buf; | |
973 | } | |
974 | ||
975 | #if USE_IPV6 | |
26ac0430 | 976 | if ( force == AF_INET6 || (force == AF_UNSPEC && IsIPv6()) ) { |
41d93087 | 977 | |
978 | xinet_ntop(AF_INET6, &m_SocketAddr.sin6_addr, buf, blen); | |
979 | ||
980 | } else if ( force == AF_INET || (force == AF_UNSPEC && IsIPv4()) ) { | |
981 | ||
982 | struct in_addr tmp; | |
983 | GetInAddr(tmp); | |
984 | xinet_ntop(AF_INET, &tmp, buf, blen); | |
985 | #else | |
26ac0430 | 986 | if ( force == AF_UNSPEC || (force == AF_INET && IsIPv4()) ) { |
41d93087 | 987 | xinet_ntop(AF_INET, &m_SocketAddr.sin_addr, buf, blen); |
988 | #endif | |
989 | } else { | |
990 | debugs(14,0,"WARNING: Corrupt IP Address details OR required to display in unknown format (" << | |
26ac0430 | 991 | force << "). accepted={" << AF_UNSPEC << "," << AF_INET << "," << AF_INET6 << "}"); |
41d93087 | 992 | fprintf(stderr,"WARNING: Corrupt IP Address details OR required to display in unknown format (%d). accepted={%d,%d,%d} ", |
993 | force, AF_UNSPEC, AF_INET, AF_INET6); | |
d85c3078 | 994 | memcpy(buf,"dead:beef::\0", min((const unsigned int)13,blen)); |
41d93087 | 995 | assert(false); |
996 | } | |
997 | ||
998 | return buf; | |
999 | } | |
1000 | ||
e1381638 AJ |
1001 | unsigned int IpAddress::ToHostname(char *buf, const unsigned int blen) const |
1002 | { | |
41d93087 | 1003 | char *p = buf; |
1004 | ||
26ac0430 | 1005 | if (IsIPv6() && blen > 0) { |
41d93087 | 1006 | *p = '['; |
1007 | p++; | |
1008 | } | |
1009 | ||
1010 | /* 7 being space for [,], and port */ | |
26ac0430 | 1011 | if ( IsIPv6() ) |
41d93087 | 1012 | NtoA(p, blen-7, AF_INET6); |
1013 | else | |
1014 | NtoA(p, blen-7, AF_INET); | |
1015 | ||
1016 | // find the end of the new string | |
26ac0430 | 1017 | while (*p != '\0' && p < buf+blen) |
41d93087 | 1018 | p++; |
1019 | ||
26ac0430 | 1020 | if (IsIPv6() && p < (buf+blen-1) ) { |
41d93087 | 1021 | *p = ']'; |
1022 | p++; | |
1023 | } | |
1024 | ||
1025 | /* terminate just in case. */ | |
1026 | *p = '\0'; | |
1027 | ||
1028 | /* return size of buffer now used */ | |
1029 | return (p - buf); | |
1030 | } | |
1031 | ||
e1381638 AJ |
1032 | char* IpAddress::ToURL(char* buf, unsigned int blen) const |
1033 | { | |
41d93087 | 1034 | char *p = buf; |
1035 | ||
1036 | // Ensure we have a buffer. | |
1037 | ||
26ac0430 | 1038 | if (buf == NULL) { |
41d93087 | 1039 | return NULL; |
1040 | } | |
1041 | ||
1042 | p += ToHostname(p, blen); | |
1043 | ||
26ac0430 | 1044 | if (m_SocketAddr.sin6_port > 0 && p < (buf+blen-6) ) { |
41d93087 | 1045 | /* 6 is max length of expected ':port' (short int) */ |
1046 | snprintf(p, 6,":%d", GetPort() ); | |
1047 | } | |
1048 | ||
1049 | // force a null-terminated string | |
303bfd76 | 1050 | buf[blen-1] = '\0'; |
41d93087 | 1051 | |
1052 | return buf; | |
1053 | } | |
1054 | ||
e1381638 AJ |
1055 | void IpAddress::GetSockAddr(struct sockaddr_storage &addr, const int family) const |
1056 | { | |
52b694c2 AJ |
1057 | struct sockaddr_in *sin = NULL; |
1058 | ||
26ac0430 | 1059 | if ( family == AF_INET && !IsIPv4()) { |
0e1a47f0 | 1060 | // FIXME INET6: caller using the wrong socket type! |
565b233e | 1061 | debugs(14, DBG_CRITICAL, HERE << "IpAddress::GetSockAddr : Cannot convert non-IPv4 to IPv4. from " << *this); |
0e1a47f0 AJ |
1062 | assert(false); |
1063 | } | |
1064 | ||
1065 | #if USE_IPV6 | |
26ac0430 | 1066 | if ( family == AF_INET6 || (family == AF_UNSPEC && IsIPv6()) ) { |
1ef0b9ce AJ |
1067 | struct sockaddr_in6 *ss6 = (struct sockaddr_in6*)&addr; |
1068 | GetSockAddr(*ss6); | |
26ac0430 | 1069 | } else if ( family == AF_INET || (family == AF_UNSPEC && IsIPv4()) ) { |
52b694c2 | 1070 | sin = (struct sockaddr_in*)&addr; |
1ef0b9ce | 1071 | GetSockAddr(*sin); |
52b694c2 AJ |
1072 | } else { |
1073 | IASSERT("false",false); | |
0e1a47f0 | 1074 | } |
8c37ea44 | 1075 | #else /* not USE_IPV6 */ |
52b694c2 | 1076 | sin = (struct sockaddr_in*)&addr; |
1ef0b9ce | 1077 | GetSockAddr(*sin); |
8c37ea44 | 1078 | #endif /* USE_IPV6 */ |
0e1a47f0 AJ |
1079 | } |
1080 | ||
e1381638 AJ |
1081 | void IpAddress::GetSockAddr(struct sockaddr_in &buf) const |
1082 | { | |
41d93087 | 1083 | #if USE_IPV6 |
1084 | ||
26ac0430 | 1085 | if ( IsIPv4() ) { |
41d93087 | 1086 | buf.sin_family = AF_INET; |
1087 | buf.sin_port = m_SocketAddr.sin6_port; | |
1088 | Map6to4( m_SocketAddr.sin6_addr, buf.sin_addr); | |
26ac0430 | 1089 | } else { |
565b233e | 1090 | debugs(14, DBG_CRITICAL, HERE << "IpAddress::GetSockAddr : Cannot convert non-IPv4 to IPv4. from " << *this ); |
41d93087 | 1091 | |
1092 | memset(&buf,0xFFFFFFFF,sizeof(struct sockaddr_in)); | |
1093 | assert(false); | |
1094 | } | |
1095 | ||
1096 | #else | |
1097 | ||
1098 | memcpy(&buf, &m_SocketAddr, sizeof(struct sockaddr_in)); | |
1099 | ||
26ac0430 | 1100 | if (buf.sin_family == 0) { |
41d93087 | 1101 | buf.sin_family = AF_INET; |
1102 | } | |
1103 | ||
1104 | #endif | |
12f45551 AJ |
1105 | |
1106 | #if HAVE_SIN_LEN_IN_SAI | |
1107 | /* not all OS have this field, BUT when they do it can be a problem if set wrong */ | |
1ef0b9ce | 1108 | buf.sin_len = sizeof(struct sockaddr_in); |
12f45551 AJ |
1109 | #endif |
1110 | ||
41d93087 | 1111 | } |
1112 | ||
1113 | #if USE_IPV6 | |
1114 | ||
e1381638 AJ |
1115 | void IpAddress::GetSockAddr(struct sockaddr_in6 &buf) const |
1116 | { | |
41d93087 | 1117 | memcpy(&buf, &m_SocketAddr, sizeof(struct sockaddr_in6)); |
1118 | /* maintain address family. It may have changed inside us. */ | |
1119 | buf.sin6_family = AF_INET6; | |
12f45551 AJ |
1120 | |
1121 | #if HAVE_SIN6_LEN_IN_SAI | |
1122 | /* not all OS have this field, BUT when they do it can be a problem if set wrong */ | |
1ef0b9ce | 1123 | buf.sin6_len = sizeof(struct sockaddr_in6); |
12f45551 | 1124 | #endif |
41d93087 | 1125 | } |
1126 | ||
1127 | #endif | |
1128 | ||
1129 | #if USE_IPV6 | |
1130 | ||
e1381638 AJ |
1131 | void IpAddress::Map4to6(const struct in_addr &in, struct in6_addr &out) const |
1132 | { | |
41d93087 | 1133 | /* check for special cases */ |
1134 | ||
26ac0430 | 1135 | if ( in.s_addr == 0x00000000) { |
41d93087 | 1136 | /* ANYADDR */ |
41d93087 | 1137 | memset(&out, 0, sizeof(struct in6_addr)); |
26ac0430 | 1138 | } else if ( in.s_addr == 0xFFFFFFFF) { |
41d93087 | 1139 | /* NOADDR */ |
2c8fff41 | 1140 | memset(&out, 255, sizeof(struct in6_addr)); |
26ac0430 | 1141 | } else { |
41d93087 | 1142 | /* general */ |
41d93087 | 1143 | memset(&out, 0, sizeof(struct in6_addr)); |
2c8fff41 AJ |
1144 | out.s6_addr[10] = 0xFF; |
1145 | out.s6_addr[11] = 0xFF; | |
1146 | out.s6_addr[12] = ((uint8_t *)&in.s_addr)[0]; | |
1147 | out.s6_addr[13] = ((uint8_t *)&in.s_addr)[1]; | |
1148 | out.s6_addr[14] = ((uint8_t *)&in.s_addr)[2]; | |
1149 | out.s6_addr[15] = ((uint8_t *)&in.s_addr)[3]; | |
41d93087 | 1150 | } |
1151 | } | |
1152 | ||
e1381638 AJ |
1153 | void IpAddress::Map6to4(const struct in6_addr &in, struct in_addr &out) const |
1154 | { | |
41d93087 | 1155 | /* ANYADDR */ |
1156 | /* NOADDR */ | |
1157 | /* general */ | |
1158 | ||
1159 | memset(&out, 0, sizeof(struct in_addr)); | |
2c8fff41 AJ |
1160 | ((uint8_t *)&out.s_addr)[0] = in.s6_addr[12]; |
1161 | ((uint8_t *)&out.s_addr)[1] = in.s6_addr[13]; | |
1162 | ((uint8_t *)&out.s_addr)[2] = in.s6_addr[14]; | |
1163 | ((uint8_t *)&out.s_addr)[3] = in.s6_addr[15]; | |
41d93087 | 1164 | } |
1165 | ||
1166 | #endif | |
1167 | ||
1168 | #if USE_IPV6 | |
e1381638 AJ |
1169 | void IpAddress::GetInAddr(in6_addr &buf) const |
1170 | { | |
41d93087 | 1171 | memcpy(&buf, &m_SocketAddr.sin6_addr, sizeof(struct in6_addr)); |
1172 | } | |
1173 | ||
1174 | #endif | |
1175 | ||
e1381638 AJ |
1176 | bool IpAddress::GetInAddr(struct in_addr &buf) const |
1177 | { | |
41d93087 | 1178 | |
1179 | #if USE_IPV6 | |
26ac0430 | 1180 | if ( IsIPv4() ) { |
41d93087 | 1181 | Map6to4((const in6_addr)m_SocketAddr.sin6_addr, buf); |
1182 | return true; | |
1183 | } | |
1184 | #else | |
1185 | ||
26ac0430 | 1186 | if ( IsIPv4() ) { |
41d93087 | 1187 | memcpy(&buf, &m_SocketAddr.sin_addr, sizeof(struct in_addr)); |
1188 | return true; | |
1189 | } | |
1190 | #endif | |
1191 | ||
1192 | // default: | |
1193 | // non-compatible IPv6 Pure Address | |
1194 | ||
565b233e | 1195 | debugs(14,1, HERE << "IpAddress::GetInAddr : Cannot convert non-IPv4 to IPv4. IPA=" << *this); |
41d93087 | 1196 | memset(&buf,0xFFFFFFFF,sizeof(struct in_addr)); |
1197 | assert(false); | |
1198 | return false; | |
1199 | } |