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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" | |
9837e5f0 | 38 | #include "ip/IpAddress.h" |
b4aae130 | 39 | #include "Debug.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 | ||
70 | static const unsigned int STRLEN_IP4A = 16; // aaa.bbb.ccc.ddd\0 | |
71 | static const unsigned int STRLEN_IP4R = 28; // ddd.ccc.bbb.aaa.in-addr.arpa.\0 | |
72 | static const unsigned int STRLEN_IP4S = 21; // ddd.ccc.bbb.aaa:ppppp\0 | |
73 | static const unsigned int MAX_IP4_STRLEN = STRLEN_IP4R; | |
74 | static const unsigned int STRLEN_IP6A = 42; // [ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff]/0 | |
75 | static const unsigned int STRLEN_IP6R = 75; // f.f.f.f f.f.f.f f.f.f.f f.f.f.f f.f.f.f f.f.f.f f.f.f.f f.f.f.f ipv6.arpa./0 | |
76 | static const unsigned int STRLEN_IP6S = 48; // [ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff]:00000/0 | |
77 | static const unsigned int MAX_IP6_STRLEN = STRLEN_IP6R; | |
78 | ||
79 | ||
80 | /* Debugging only. Dump the address content when a fatal assert is encountered. */ | |
81 | #if USE_IPV6 | |
82 | #define IASSERT(a,b) \ | |
68b313c2 | 83 | if(!(b)){ printf("assert \"%s\" at line %d\n", a, __LINE__); \ |
565b233e | 84 | printf("IpAddress invalid? with IsIPv4()=%c, IsIPv6()=%c\n",(IsIPv4()?'T':'F'),(IsIPv6()?'T':'F')); \ |
41d93087 | 85 | printf("ADDRESS:"); \ |
86 | for(unsigned int i = 0; i < sizeof(m_SocketAddr.sin6_addr); i++) { \ | |
87 | printf(" %x", m_SocketAddr.sin6_addr.s6_addr[i]); \ | |
88 | } printf("\n"); assert(b); \ | |
89 | } | |
90 | #else | |
91 | #define IASSERT(a,b) \ | |
68b313c2 | 92 | if(!(b)){ printf("assert \"%s\" at line %d\n", a, __LINE__); \ |
565b233e | 93 | printf("IpAddress invalid? with IsIPv4()=%c, IsIPv6()=%c\n",(IsIPv4()?'T':'F'),(IsIPv6()?'T':'F')); \ |
41d93087 | 94 | printf("ADDRESS: %x\n", (unsigned int)m_SocketAddr.sin_addr.s_addr); \ |
95 | assert(b); \ | |
96 | } | |
97 | #endif | |
98 | ||
23f6a720 | 99 | IpAddress::IpAddress() |
41d93087 | 100 | { |
101 | SetEmpty(); | |
102 | } | |
103 | ||
23f6a720 | 104 | IpAddress::~IpAddress() |
41d93087 | 105 | { |
565b233e | 106 | memset(this,0,sizeof(IpAddress)); |
41d93087 | 107 | } |
108 | ||
109 | int | |
565b233e | 110 | IpAddress::GetCIDR() const |
41d93087 | 111 | { |
112 | uint8_t shift,byte; | |
113 | uint8_t bit,caught; | |
114 | int len = 0; | |
115 | #if USE_IPV6 | |
df9617b9 | 116 | const uint8_t *ptr= m_SocketAddr.sin6_addr.s6_addr; |
41d93087 | 117 | #else |
df9617b9 | 118 | const uint8_t *ptr= (uint8_t *)&m_SocketAddr.sin_addr.s_addr; |
41d93087 | 119 | #endif |
120 | ||
121 | /* Let's scan all the bits from Most Significant to Least */ | |
122 | /* Until we find an "0" bit. Then, we return */ | |
123 | shift=0; | |
124 | ||
125 | #if USE_IPV6 | |
126 | /* return IPv4 CIDR for any Mapped address */ | |
127 | /* Thus only check the mapped bit */ | |
128 | ||
26ac0430 | 129 | if ( !IsIPv6() ) { |
41d93087 | 130 | shift = 12; |
131 | } | |
132 | ||
133 | #endif | |
134 | ||
135 | for (;shift<sizeof(m_SocketAddr.sin6_addr) ;shift++) { | |
136 | byte= *(ptr+shift); | |
137 | ||
138 | if (byte == 0xFF) { | |
139 | len += 8; | |
140 | continue ; /* A short-cut */ | |
141 | } | |
142 | ||
143 | for (caught = 0 , bit= 7 ; !caught && (bit <= 7); bit--) { | |
144 | caught = ((byte & 0x80) == 0x00); /* Found a '0' at 'bit' ? */ | |
145 | ||
146 | if (!caught) | |
147 | len++; | |
148 | ||
149 | byte <<= 1; | |
150 | } | |
151 | ||
152 | if (caught) | |
153 | break; /* We have found the most significant "0" bit. */ | |
154 | } | |
155 | ||
156 | return len; | |
157 | } | |
158 | ||
23f6a720 | 159 | const int IpAddress::ApplyMask(IpAddress const &mask_addr) |
41d93087 | 160 | { |
161 | uint32_t *p1 = (uint32_t*)(&m_SocketAddr.sin6_addr); | |
162 | uint32_t const *p2 = (uint32_t const *)(&mask_addr.m_SocketAddr.sin6_addr); | |
163 | unsigned int blen = sizeof(m_SocketAddr.sin6_addr)/sizeof(uint32_t); | |
164 | unsigned int changes = 0; | |
165 | ||
166 | for (unsigned int i = 0; i < blen; i++) { | |
26ac0430 | 167 | if ((p1[i] & p2[i]) != p1[i]) |
41d93087 | 168 | changes++; |
169 | ||
170 | p1[i] &= p2[i]; | |
171 | } | |
172 | ||
41d93087 | 173 | return changes; |
174 | } | |
175 | ||
565b233e | 176 | bool IpAddress::ApplyMask(const unsigned int cidr, int mtype) |
41d93087 | 177 | { |
178 | uint8_t clearbits = 0; | |
179 | uint8_t* p = NULL; | |
180 | ||
181 | #if !USE_IPV6 | |
182 | IASSERT("mtype != AF_INET6", mtype != AF_INET6); /* using IPv6 in IPv4 is invalid. */ | |
183 | ||
26ac0430 | 184 | if (mtype == AF_UNSPEC) |
41d93087 | 185 | mtype = AF_INET; |
186 | ||
187 | #else | |
26ac0430 | 188 | if (mtype == AF_UNSPEC) |
41d93087 | 189 | mtype = AF_INET6; |
190 | ||
191 | #endif | |
192 | ||
193 | // validation and short-cuts. | |
194 | if (cidr > 128) | |
195 | return false; | |
196 | ||
197 | if (cidr > 32 && mtype == AF_INET) | |
198 | return false; | |
199 | ||
2c1b9590 AJ |
200 | if (cidr == 0) { |
201 | /* CIDR /0 is NoAddr regardless of the IPv4/IPv6 protocol */ | |
202 | SetNoAddr(); | |
203 | return true; | |
204 | } | |
205 | ||
41d93087 | 206 | clearbits = (uint8_t)( (mtype==AF_INET6?128:32) -cidr); |
207 | ||
208 | // short-cut | |
26ac0430 | 209 | if (clearbits == 0) |
41d93087 | 210 | return true; |
211 | ||
212 | #if USE_IPV6 | |
213 | ||
214 | p = (uint8_t*)(&m_SocketAddr.sin6_addr) + 15; | |
215 | ||
216 | #else | |
217 | ||
218 | p = (uint8_t*)(&m_SocketAddr.sin_addr) + 3; | |
219 | ||
220 | #endif | |
221 | ||
222 | for (; clearbits>0 && p >= (uint8_t*)&m_SocketAddr.sin6_addr ; p-- ) { | |
26ac0430 | 223 | if (clearbits < 8) { |
41d93087 | 224 | *p &= ((0xFF << clearbits) & 0xFF); |
225 | clearbits = 0; | |
226 | } else { | |
227 | *p &= 0x00; | |
228 | clearbits -= 8; | |
229 | } | |
230 | } | |
231 | ||
232 | return true; | |
233 | } | |
234 | ||
565b233e | 235 | bool IpAddress::IsSockAddr() const |
41d93087 | 236 | { |
237 | return (m_SocketAddr.sin6_port != 0); | |
238 | } | |
239 | ||
565b233e | 240 | bool IpAddress::IsIPv4() const |
41d93087 | 241 | { |
242 | #if USE_IPV6 | |
243 | ||
244 | return IsAnyAddr() || IsNoAddr() || | |
41d93087 | 245 | ( m_SocketAddr.sin6_addr.s6_addr32[0] == htonl(0x00000000) && |
246 | m_SocketAddr.sin6_addr.s6_addr32[1] == htonl(0x00000000) && | |
247 | m_SocketAddr.sin6_addr.s6_addr32[2] == htonl(0x0000FFFF) | |
248 | ); | |
249 | ||
250 | #else | |
251 | return true; // enforce IPv4 in IPv4-only mode. | |
252 | #endif | |
253 | } | |
254 | ||
565b233e | 255 | bool IpAddress::IsIPv6() const |
41d93087 | 256 | { |
257 | #if USE_IPV6 | |
258 | ||
259 | return IsAnyAddr() || IsNoAddr() || | |
41d93087 | 260 | !( m_SocketAddr.sin6_addr.s6_addr32[0] == htonl(0x00000000) && |
261 | m_SocketAddr.sin6_addr.s6_addr32[1] == htonl(0x00000000) && | |
262 | m_SocketAddr.sin6_addr.s6_addr32[2] == htonl(0x0000FFFF) | |
26ac0430 | 263 | ); |
41d93087 | 264 | #else |
265 | return false; // enforce IPv4 in IPv4-only mode. | |
266 | #endif | |
267 | } | |
268 | ||
565b233e | 269 | bool IpAddress::IsAnyAddr() const |
41d93087 | 270 | { |
271 | #if USE_IPV6 | |
272 | return m_SocketAddr.sin6_addr.s6_addr32[0] == 0 | |
273 | && m_SocketAddr.sin6_addr.s6_addr32[1] == 0 | |
274 | && m_SocketAddr.sin6_addr.s6_addr32[2] == 0 | |
275 | && m_SocketAddr.sin6_addr.s6_addr32[3] == 0 | |
276 | ; | |
277 | #else | |
278 | ||
279 | return (INADDR_ANY == m_SocketAddr.sin_addr.s_addr); | |
280 | #endif | |
281 | } | |
282 | ||
283 | /// NOTE: Does NOT clear the Port stored. Ony the Address and Type. | |
565b233e | 284 | void IpAddress::SetAnyAddr() |
41d93087 | 285 | { |
286 | #if USE_IPV6 | |
287 | memset(&m_SocketAddr.sin6_addr, 0, sizeof(struct in6_addr) ); | |
288 | #else | |
289 | memset(&m_SocketAddr.sin_addr, 0, sizeof(struct in_addr) ); | |
290 | #endif | |
291 | } | |
292 | ||
565b233e AJ |
293 | /// NOTE: completely empties the IpAddress structure. Address, Port, Type, everything. |
294 | void IpAddress::SetEmpty() | |
41d93087 | 295 | { |
296 | memset(&m_SocketAddr, 0, sizeof(m_SocketAddr) ); | |
297 | } | |
298 | ||
565b233e | 299 | bool IpAddress::SetIPv4() |
41d93087 | 300 | { |
301 | #if USE_IPV6 | |
302 | ||
26ac0430 | 303 | if ( IsLocalhost() ) { |
41d93087 | 304 | m_SocketAddr.sin6_addr.s6_addr32[2] = htonl(0xffff); |
305 | m_SocketAddr.sin6_addr.s6_addr32[3] = htonl(0x7F000001); | |
306 | return true; | |
307 | } | |
41d93087 | 308 | |
26ac0430 | 309 | if ( IsAnyAddr() ) { |
41d93087 | 310 | m_SocketAddr.sin6_addr.s6_addr32[2] = htonl(0xffff); |
311 | return true; | |
312 | } | |
313 | ||
26ac0430 | 314 | if ( IsIPv4()) |
41d93087 | 315 | return true; |
316 | ||
317 | // anything non-IPv4 and non-convertable is BAD. | |
318 | return false; | |
319 | #else | |
320 | return true; // Always IPv4 in IPv4-only builds. | |
321 | #endif | |
322 | } | |
323 | ||
565b233e | 324 | bool IpAddress::IsLocalhost() const |
41d93087 | 325 | { |
326 | #if USE_IPV6 | |
f8f9eafb | 327 | return ( m_SocketAddr.sin6_addr.s6_addr32[0] == 0 |
26ac0430 AJ |
328 | && m_SocketAddr.sin6_addr.s6_addr32[1] == 0 |
329 | && m_SocketAddr.sin6_addr.s6_addr32[2] == 0 | |
330 | && m_SocketAddr.sin6_addr.s6_addr32[3] == htonl(0x1) | |
f8f9eafb | 331 | ) |
26ac0430 | 332 | || |
f8f9eafb | 333 | ( m_SocketAddr.sin6_addr.s6_addr32[0] == 0 |
26ac0430 AJ |
334 | && m_SocketAddr.sin6_addr.s6_addr32[1] == 0 |
335 | && m_SocketAddr.sin6_addr.s6_addr32[2] == htonl(0xffff) | |
336 | && m_SocketAddr.sin6_addr.s6_addr32[3] == htonl(0x7F000001) | |
a5aa3fbc | 337 | ); |
41d93087 | 338 | #else |
339 | ||
340 | return (htonl(0x7F000001) == m_SocketAddr.sin_addr.s_addr); | |
341 | #endif | |
342 | } | |
343 | ||
565b233e | 344 | void IpAddress::SetLocalhost() |
41d93087 | 345 | { |
346 | #if USE_IPV6 | |
347 | SetAnyAddr(); | |
348 | m_SocketAddr.sin6_addr.s6_addr[15] = 0x1; | |
349 | m_SocketAddr.sin6_family = AF_INET6; | |
350 | ||
351 | #else | |
352 | m_SocketAddr.sin_addr.s_addr = htonl(0x7F000001); | |
353 | m_SocketAddr.sin_family = AF_INET; | |
354 | #endif | |
355 | } | |
356 | ||
565b233e | 357 | bool IpAddress::IsNoAddr() const |
41d93087 | 358 | { |
359 | // IFF the address == 0xff..ff (all ones) | |
360 | #if USE_IPV6 | |
361 | return m_SocketAddr.sin6_addr.s6_addr32[0] == 0xFFFFFFFF | |
362 | && m_SocketAddr.sin6_addr.s6_addr32[1] == 0xFFFFFFFF | |
363 | && m_SocketAddr.sin6_addr.s6_addr32[2] == 0xFFFFFFFF | |
364 | && m_SocketAddr.sin6_addr.s6_addr32[3] == 0xFFFFFFFF | |
365 | ; | |
366 | #else | |
367 | ||
368 | return 0xFFFFFFFF == m_SocketAddr.sin_addr.s_addr; | |
369 | #endif | |
370 | } | |
371 | ||
565b233e | 372 | void IpAddress::SetNoAddr() |
41d93087 | 373 | { |
374 | #if USE_IPV6 | |
375 | memset(&m_SocketAddr.sin6_addr, 0xFFFFFFFF, sizeof(struct in6_addr) ); | |
376 | m_SocketAddr.sin6_family = AF_INET6; | |
377 | #else | |
378 | memset(&m_SocketAddr.sin_addr, 0xFFFFFFFF, sizeof(struct in_addr) ); | |
379 | m_SocketAddr.sin_family = AF_INET; | |
380 | #endif | |
381 | } | |
382 | ||
383 | #if USE_IPV6 | |
384 | ||
565b233e | 385 | bool IpAddress::GetReverseString6(char buf[MAX_IPSTRLEN], const struct in6_addr &dat) const |
41d93087 | 386 | { |
387 | char *p = buf; | |
388 | unsigned char const *r = dat.s6_addr; | |
389 | ||
390 | /* RFC1886 says: */ | |
391 | /* 4321:0:1:2:3:4:567:89ab */ | |
392 | /* must be sent */ | |
393 | /* 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. */ | |
394 | ||
395 | /* Work from the binary field. Anything else may have representation changes. */ | |
396 | /* The sin6_port and sin6_addr members shall be in network byte order. */ | |
397 | ||
398 | /* Compile Err: 'Too many arguments for format. */ | |
399 | ||
26ac0430 | 400 | for (int i = 15; i >= 0; i--, p+=4) { |
41d93087 | 401 | snprintf(p, 5, "%x.%x.", ((r[i])&0xf), (((r[i])>>4)&0xf) ); |
402 | } | |
403 | ||
404 | /* RFC3152 says: */ | |
405 | /* ip6.int is now deprecated TLD, use ip6.arpa instead. */ | |
406 | snprintf(p,10,"ip6.arpa."); | |
407 | ||
408 | return true; | |
409 | } | |
410 | ||
411 | #endif | |
412 | ||
565b233e | 413 | bool IpAddress::GetReverseString4(char buf[MAX_IPSTRLEN], const struct in_addr &dat) const |
41d93087 | 414 | { |
415 | unsigned int i = (unsigned int) ntohl(dat.s_addr); | |
416 | snprintf(buf, 32, "%u.%u.%u.%u.in-addr.arpa.", | |
417 | i & 255, | |
418 | (i >> 8) & 255, | |
419 | (i >> 16) & 255, | |
420 | (i >> 24) & 255); | |
421 | return true; | |
422 | } | |
423 | ||
565b233e | 424 | bool IpAddress::GetReverseString(char buf[MAX_IPSTRLEN], int show_type) const |
41d93087 | 425 | { |
426 | ||
26ac0430 | 427 | if (show_type == AF_UNSPEC) { |
41d93087 | 428 | #if USE_IPV6 |
429 | show_type = IsIPv6() ? AF_INET6 : AF_INET ; | |
430 | #else | |
431 | show_type = AF_INET; | |
432 | #endif | |
433 | } | |
434 | ||
435 | if (show_type == AF_INET && IsIPv4()) { | |
436 | #if USE_IPV6 | |
437 | ||
438 | return GetReverseString4(buf, *(struct in_addr*)&m_SocketAddr.sin6_addr.s6_addr32[3] ); | |
439 | } else if ( show_type == AF_INET6 && IsIPv6() ) { | |
440 | return GetReverseString6(buf, m_SocketAddr.sin6_addr); | |
441 | #else | |
442 | return GetReverseString4(buf, m_SocketAddr.sin_addr); | |
443 | #endif | |
444 | } | |
445 | ||
446 | debugs(14,0, "Unable to convert '" << NtoA(buf,MAX_IPSTRLEN) << "' to the rDNS type requested."); | |
447 | ||
448 | buf[0] = '\0'; | |
449 | ||
450 | return false; | |
451 | } | |
452 | ||
9fb4efad | 453 | IpAddress& IpAddress::operator =(const IpAddress &s) |
41d93087 | 454 | { |
565b233e | 455 | memcpy(this, &s, sizeof(IpAddress)); |
41d93087 | 456 | return *this; |
457 | }; | |
458 | ||
23f6a720 | 459 | IpAddress::IpAddress(const char*s) |
41d93087 | 460 | { |
461 | SetEmpty(); | |
462 | operator=(s); | |
463 | } | |
464 | ||
565b233e | 465 | bool IpAddress::operator =(const char* s) |
41d93087 | 466 | { |
467 | return LookupHostIP(s, true); | |
468 | } | |
469 | ||
565b233e | 470 | bool IpAddress::GetHostByName(const char* s) |
41d93087 | 471 | { |
472 | return LookupHostIP(s, false); | |
473 | } | |
474 | ||
565b233e | 475 | bool IpAddress::LookupHostIP(const char *s, bool nodns) |
41d93087 | 476 | { |
477 | int err = 0; | |
478 | ||
479 | short port = 0; | |
480 | ||
481 | struct addrinfo *res = NULL; | |
482 | ||
483 | struct addrinfo want; | |
484 | ||
485 | memset(&want, 0, sizeof(struct addrinfo)); | |
26ac0430 | 486 | if (nodns) { |
41d93087 | 487 | want.ai_flags = AI_NUMERICHOST; // prevent actual DNS lookups! |
488 | } | |
489 | #if !USE_IPV6 | |
490 | want.ai_family = AF_INET; | |
491 | #endif | |
492 | ||
493 | if ( (err = xgetaddrinfo(s, NULL, &want, &res)) != 0) { | |
494 | debugs(14,1, HERE << "Given Bad IP '" << s << "': " << xgai_strerror(err) ); | |
495 | /* free the memory xgetaddrinfo() dynamically allocated. */ | |
26ac0430 | 496 | if (res) { |
41d93087 | 497 | xfreeaddrinfo(res); |
498 | res = NULL; | |
499 | } | |
500 | return false; | |
501 | } | |
502 | ||
503 | /* | |
504 | * NP: =(sockaddr_*) may alter the port. we don't want that. | |
505 | * all we have been given as input was an IPA. | |
506 | */ | |
507 | port = GetPort(); | |
508 | operator=(*res); | |
509 | SetPort(port); | |
510 | ||
511 | /* free the memory xgetaddrinfo() dynamically allocated. */ | |
512 | xfreeaddrinfo(res); | |
513 | ||
514 | res = NULL; | |
515 | ||
516 | return true; | |
517 | } | |
518 | ||
23f6a720 | 519 | IpAddress::IpAddress(struct sockaddr_in const &s) |
41d93087 | 520 | { |
521 | SetEmpty(); | |
522 | operator=(s); | |
523 | }; | |
524 | ||
23f6a720 | 525 | IpAddress& IpAddress::operator =(struct sockaddr_in const &s) |
41d93087 | 526 | { |
527 | #if USE_IPV6 | |
528 | Map4to6((const in_addr)s.sin_addr, m_SocketAddr.sin6_addr); | |
529 | m_SocketAddr.sin6_port = s.sin_port; | |
530 | m_SocketAddr.sin6_family = AF_INET6; | |
531 | #else | |
532 | ||
533 | memcpy(&m_SocketAddr, &s, sizeof(struct sockaddr_in)); | |
534 | #endif | |
535 | ||
41d93087 | 536 | return *this; |
537 | }; | |
538 | ||
23f6a720 | 539 | IpAddress& IpAddress::operator =(const struct sockaddr_storage &s) |
0e1a47f0 AJ |
540 | { |
541 | #if USE_IPV6 | |
542 | /* some AF_* magic to tell socket types apart and what we need to do */ | |
26ac0430 | 543 | if (s.ss_family == AF_INET6) { |
0e1a47f0 | 544 | memcpy(&m_SocketAddr, &s, sizeof(struct sockaddr_in)); |
26ac0430 | 545 | } else { // convert it to our storage mapping. |
0e1a47f0 AJ |
546 | struct sockaddr_in *sin = (struct sockaddr_in*)&s; |
547 | m_SocketAddr.sin6_port = sin->sin_port; | |
548 | Map4to6( sin->sin_addr, m_SocketAddr.sin6_addr); | |
549 | } | |
550 | #else | |
551 | memcpy(&m_SocketAddr, &s, sizeof(struct sockaddr_in)); | |
552 | #endif | |
553 | return *this; | |
554 | }; | |
555 | ||
41d93087 | 556 | #if USE_IPV6 |
23f6a720 | 557 | IpAddress::IpAddress(struct sockaddr_in6 const &s) |
41d93087 | 558 | { |
559 | SetEmpty(); | |
560 | operator=(s); | |
561 | }; | |
562 | ||
23f6a720 | 563 | IpAddress& IpAddress::operator =(struct sockaddr_in6 const &s) |
41d93087 | 564 | { |
565 | memcpy(&m_SocketAddr, &s, sizeof(struct sockaddr_in6)); | |
41d93087 | 566 | return *this; |
567 | }; | |
568 | ||
569 | #endif | |
570 | ||
23f6a720 | 571 | IpAddress::IpAddress(struct in_addr const &s) |
41d93087 | 572 | { |
573 | SetEmpty(); | |
574 | operator=(s); | |
575 | }; | |
576 | ||
23f6a720 | 577 | IpAddress& IpAddress::operator =(struct in_addr const &s) |
41d93087 | 578 | { |
579 | #if USE_IPV6 | |
580 | Map4to6((const in_addr)s, m_SocketAddr.sin6_addr); | |
581 | m_SocketAddr.sin6_family = AF_INET6; | |
41d93087 | 582 | #else |
41d93087 | 583 | memcpy(&m_SocketAddr.sin_addr, &s, sizeof(struct in_addr)); |
41d93087 | 584 | #endif |
41d93087 | 585 | return *this; |
586 | }; | |
587 | ||
588 | #if USE_IPV6 | |
589 | ||
23f6a720 | 590 | IpAddress::IpAddress(struct in6_addr const &s) |
41d93087 | 591 | { |
592 | SetEmpty(); | |
593 | operator=(s); | |
594 | }; | |
595 | ||
23f6a720 | 596 | IpAddress& IpAddress::operator =(struct in6_addr const &s) |
41d93087 | 597 | { |
41d93087 | 598 | memcpy(&m_SocketAddr.sin6_addr, &s, sizeof(struct in6_addr)); |
599 | m_SocketAddr.sin6_family = AF_INET6; | |
41d93087 | 600 | return *this; |
601 | }; | |
602 | ||
603 | #endif | |
604 | ||
9fb4efad | 605 | IpAddress::IpAddress(const IpAddress &s) |
41d93087 | 606 | { |
607 | SetEmpty(); | |
608 | operator=(s); | |
609 | } | |
610 | ||
9fb4efad | 611 | IpAddress::IpAddress(IpAddress *s) |
41d93087 | 612 | { |
613 | SetEmpty(); | |
1a1f4104 | 614 | if (s) |
af6a12ee | 615 | memcpy(this, s, sizeof(IpAddress)); |
41d93087 | 616 | } |
617 | ||
23f6a720 | 618 | IpAddress::IpAddress(const struct hostent &s) |
41d93087 | 619 | { |
620 | SetEmpty(); | |
621 | operator=(s); | |
622 | } | |
623 | ||
565b233e | 624 | bool IpAddress::operator =(const struct hostent &s) |
41d93087 | 625 | { |
626 | ||
627 | struct in_addr* ipv4 = NULL; | |
628 | ||
629 | struct in6_addr* ipv6 = NULL; | |
630 | ||
631 | //struct hostent { | |
632 | // char *h_name; /* official name of host */ | |
633 | // char **h_aliases; /* alias list */ | |
634 | // int h_addrtype; /* host address type */ | |
635 | // int h_length; /* length of address */ | |
636 | // char **h_addr_list; /* list of addresses */ | |
637 | //} | |
638 | ||
26ac0430 | 639 | switch (s.h_addrtype) { |
41d93087 | 640 | |
641 | case AF_INET: | |
642 | ipv4 = (in_addr*)(s.h_addr_list[0]); | |
643 | /* this */ | |
644 | operator=(*ipv4); | |
645 | break; | |
646 | ||
647 | case AF_INET6: | |
648 | ipv6 = (in6_addr*)(s.h_addr_list[0]); | |
649 | #if USE_IPV6 | |
650 | /* this */ | |
651 | operator=(*ipv6); | |
652 | #else | |
653 | ||
654 | debugs(14,1, HERE << "Discarded IPv6 Address. Protocol disabled."); | |
655 | ||
656 | // FIXME see if there is another address in the list that might be usable ?? | |
657 | return false; | |
658 | #endif | |
659 | ||
660 | break; | |
661 | ||
662 | default: | |
26ac0430 AJ |
663 | IASSERT("false",false); |
664 | return false; | |
41d93087 | 665 | } |
666 | ||
667 | return true; | |
668 | } | |
669 | ||
23f6a720 | 670 | IpAddress::IpAddress(const struct addrinfo &s) |
41d93087 | 671 | { |
672 | SetEmpty(); | |
673 | operator=(s); | |
674 | } | |
675 | ||
565b233e | 676 | bool IpAddress::operator =(const struct addrinfo &s) |
41d93087 | 677 | { |
678 | ||
679 | struct sockaddr_in* ipv4 = NULL; | |
680 | ||
681 | struct sockaddr_in6* ipv6 = NULL; | |
682 | ||
683 | //struct addrinfo { | |
684 | // int ai_flags; /* input flags */ | |
685 | // int ai_family; /* protocol family for socket */ | |
686 | // int ai_socktype; /* socket type */ | |
687 | // int ai_protocol; /* protocol for socket */ | |
688 | // socklen_t ai_addrlen; /* length of socket-address */ | |
689 | // struct sockaddr *ai_addr; /* socket-address for socket */ | |
690 | // char *ai_canonname; /* canonical name for service location */ | |
691 | // struct addrinfo *ai_next; /* pointer to next in list */ | |
692 | //} | |
693 | ||
26ac0430 | 694 | switch (s.ai_family) { |
41d93087 | 695 | |
696 | case AF_INET: | |
697 | ipv4 = (sockaddr_in*)(s.ai_addr); | |
698 | /* this */ | |
699 | assert(ipv4); | |
700 | operator=(*ipv4); | |
701 | break; | |
702 | ||
703 | case AF_INET6: | |
704 | ipv6 = (sockaddr_in6*)(s.ai_addr); | |
705 | #if USE_IPV6 | |
706 | /* this */ | |
707 | assert(ipv6); | |
708 | operator=(*ipv6); | |
709 | #else | |
710 | ||
711 | debugs(14,1, HERE << "Discarded IPv6 Address. Protocol disabled."); | |
712 | ||
713 | // see if there is another address in the list that might be usable ?? | |
714 | ||
715 | if (s.ai_next) | |
716 | return operator=(*s.ai_next); | |
717 | else | |
718 | return false; | |
719 | ||
720 | #endif | |
721 | break; | |
722 | ||
723 | case AF_UNSPEC: | |
724 | default: | |
725 | // attempt to handle partially initialised addrinfo. | |
726 | // such as those where data only comes from getsockopt() | |
26ac0430 | 727 | if (s.ai_addr != NULL) { |
41d93087 | 728 | #if USE_IPV6 |
26ac0430 | 729 | if (s.ai_addrlen == sizeof(struct sockaddr_in6)) { |
41d93087 | 730 | operator=(*((struct sockaddr_in6*)s.ai_addr)); |
731 | return true; | |
26ac0430 | 732 | } else |
41d93087 | 733 | #endif |
26ac0430 AJ |
734 | if (s.ai_addrlen == sizeof(struct sockaddr_in)) { |
735 | operator=(*((struct sockaddr_in*)s.ai_addr)); | |
736 | return true; | |
737 | } | |
41d93087 | 738 | } |
739 | return false; | |
740 | } | |
741 | ||
742 | return true; | |
743 | } | |
744 | ||
565b233e | 745 | void IpAddress::GetAddrInfo(struct addrinfo *&dst, int force) const |
41d93087 | 746 | { |
26ac0430 | 747 | if (dst == NULL) { |
41d93087 | 748 | dst = new addrinfo; |
749 | } | |
750 | ||
751 | memset(dst, 0, sizeof(struct addrinfo)); | |
752 | ||
753 | // set defaults | |
754 | dst->ai_flags = AI_NUMERICHOST; | |
755 | ||
26ac0430 | 756 | if (dst->ai_socktype == 0) |
41d93087 | 757 | dst->ai_socktype = SOCK_STREAM; |
758 | ||
26ac0430 | 759 | if (dst->ai_socktype == SOCK_STREAM // implies TCP |
41d93087 | 760 | && dst->ai_protocol == 0) |
761 | dst->ai_protocol = IPPROTO_TCP; | |
762 | ||
26ac0430 | 763 | if (dst->ai_socktype == SOCK_DGRAM // implies UDP |
41d93087 | 764 | && dst->ai_protocol == 0) |
765 | dst->ai_protocol = IPPROTO_UDP; | |
766 | ||
767 | #if USE_IPV6 | |
26ac0430 | 768 | if ( force == AF_INET6 || (force == AF_UNSPEC && IsIPv6()) ) { |
41d93087 | 769 | dst->ai_addr = (struct sockaddr*)new sockaddr_in6; |
770 | ||
771 | memset(dst->ai_addr,0,sizeof(struct sockaddr_in6)); | |
772 | ||
773 | GetSockAddr(*((struct sockaddr_in6*)dst->ai_addr)); | |
774 | ||
775 | dst->ai_addrlen = sizeof(struct sockaddr_in6); | |
776 | ||
777 | dst->ai_family = ((struct sockaddr_in6*)dst->ai_addr)->sin6_family; | |
9d92af86 AJ |
778 | |
779 | #if 0 | |
780 | /** | |
781 | * Enable only if you must and please report to squid-dev if you find a need for this. | |
782 | * | |
783 | * Vista may need this to cope with dual-stack (unsetting IP6_V6ONLY). | |
784 | * http://msdn.microsoft.com/en-us/library/ms738574(VS.85).aspx | |
785 | * Linux appears to only do some things when its present. | |
786 | * (93) Bad Protocol | |
787 | * FreeBSD dies horribly when using dual-stack with it set. | |
788 | * (43) Protocol not supported | |
789 | */ | |
41d93087 | 790 | dst->ai_protocol = IPPROTO_IPV6; |
9d92af86 AJ |
791 | #endif |
792 | ||
41d93087 | 793 | } else |
794 | #endif | |
26ac0430 | 795 | if ( force == AF_INET || (force == AF_UNSPEC && IsIPv4()) ) { |
41d93087 | 796 | |
797 | dst->ai_addr = (struct sockaddr*)new sockaddr_in; | |
798 | ||
799 | memset(dst->ai_addr,0,sizeof(struct sockaddr_in)); | |
800 | ||
801 | GetSockAddr(*((struct sockaddr_in*)dst->ai_addr)); | |
802 | ||
803 | dst->ai_addrlen = sizeof(struct sockaddr_in); | |
804 | ||
805 | dst->ai_family = ((struct sockaddr_in*)dst->ai_addr)->sin_family; | |
26ac0430 | 806 | } else { |
41d93087 | 807 | IASSERT("false",false); |
808 | } | |
809 | } | |
810 | ||
565b233e | 811 | void IpAddress::InitAddrInfo(struct addrinfo *&ai) const |
41d93087 | 812 | { |
26ac0430 | 813 | if (ai == NULL) { |
41d93087 | 814 | ai = new addrinfo; |
815 | memset(ai,0,sizeof(struct addrinfo)); | |
816 | } | |
817 | ||
818 | // remove any existing data. | |
26ac0430 | 819 | if (ai->ai_addr) delete ai->ai_addr; |
41d93087 | 820 | |
821 | ai->ai_addr = (struct sockaddr*)new sockaddr_in6; | |
822 | memset(ai->ai_addr, 0, sizeof(struct sockaddr_in6)); | |
823 | ||
824 | ai->ai_addrlen = sizeof(struct sockaddr_in6); | |
825 | ||
826 | } | |
827 | ||
565b233e | 828 | void IpAddress::FreeAddrInfo(struct addrinfo *&ai) const |
41d93087 | 829 | { |
26ac0430 | 830 | if (ai == NULL) return; |
41d93087 | 831 | |
26ac0430 | 832 | if (ai->ai_addr) delete ai->ai_addr; |
41d93087 | 833 | |
834 | ai->ai_addr = NULL; | |
835 | ||
836 | ai->ai_addrlen = 0; | |
837 | ||
838 | // NP: name fields are NOT allocated at present. | |
839 | delete ai; | |
840 | ||
841 | ai = NULL; | |
842 | } | |
843 | ||
23f6a720 | 844 | int IpAddress::matchIPAddr(const IpAddress &rhs) const |
41d93087 | 845 | { |
846 | #if USE_IPV6 | |
847 | uint8_t *l = (uint8_t*)m_SocketAddr.sin6_addr.s6_addr; | |
848 | uint8_t *r = (uint8_t*)rhs.m_SocketAddr.sin6_addr.s6_addr; | |
849 | #else | |
850 | uint8_t *l = (uint8_t*)&m_SocketAddr.sin_addr.s_addr; | |
851 | uint8_t *r = (uint8_t*)&rhs.m_SocketAddr.sin_addr.s_addr; | |
852 | #endif | |
853 | ||
854 | // loop a byte-wise compare | |
855 | // NP: match MUST be R-to-L : L-to-R produces inconsistent gt/lt results at varying CIDR | |
856 | // expected difference on CIDR is gt/eq or lt/eq ONLY. | |
26ac0430 | 857 | for (unsigned int i = 0 ; i < sizeof(m_SocketAddr.sin6_addr) ; i++) { |
41d93087 | 858 | |
26ac0430 | 859 | if (l[i] < r[i]) |
41d93087 | 860 | return -1; |
861 | ||
26ac0430 | 862 | if (l[i] > r[i]) |
41d93087 | 863 | return 1; |
864 | } | |
865 | ||
866 | return 0; | |
867 | } | |
868 | ||
23f6a720 | 869 | bool IpAddress::operator ==(const IpAddress &s) const |
41d93087 | 870 | { |
871 | return (0 == matchIPAddr(s)); | |
872 | } | |
873 | ||
23f6a720 | 874 | bool IpAddress::operator !=(const IpAddress &s) const |
41d93087 | 875 | { |
876 | return ! ( operator==(s) ); | |
877 | } | |
878 | ||
23f6a720 | 879 | bool IpAddress::operator <=(const IpAddress &rhs) const |
41d93087 | 880 | { |
26ac0430 | 881 | if (IsAnyAddr() && !rhs.IsAnyAddr()) |
41d93087 | 882 | return true; |
883 | ||
884 | return (matchIPAddr(rhs) <= 0); | |
885 | } | |
886 | ||
23f6a720 | 887 | bool IpAddress::operator >=(const IpAddress &rhs) const |
41d93087 | 888 | { |
26ac0430 | 889 | if (IsNoAddr() && !rhs.IsNoAddr()) |
41d93087 | 890 | return true; |
891 | ||
892 | return ( matchIPAddr(rhs) >= 0); | |
893 | } | |
894 | ||
23f6a720 | 895 | bool IpAddress::operator >(const IpAddress &rhs) const |
41d93087 | 896 | { |
26ac0430 | 897 | if (IsNoAddr() && !rhs.IsNoAddr()) |
41d93087 | 898 | return true; |
899 | ||
900 | return ( matchIPAddr(rhs) > 0); | |
901 | } | |
902 | ||
23f6a720 | 903 | bool IpAddress::operator <(const IpAddress &rhs) const |
41d93087 | 904 | { |
26ac0430 | 905 | if (IsNoAddr() && !rhs.IsNoAddr()) |
41d93087 | 906 | return true; |
907 | ||
908 | return ( matchIPAddr(rhs) < 0); | |
909 | } | |
910 | ||
565b233e | 911 | u_short IpAddress::GetPort() const |
41d93087 | 912 | { |
913 | return ntohs( m_SocketAddr.sin6_port ); | |
914 | } | |
915 | ||
565b233e | 916 | u_short IpAddress::SetPort(u_short prt) |
41d93087 | 917 | { |
918 | m_SocketAddr.sin6_port = htons(prt); | |
919 | ||
920 | return prt; | |
921 | } | |
922 | ||
923 | /** | |
924 | * NtoA Given a buffer writes a readable ascii version of the IPA and/or port stored | |
925 | * | |
926 | * Buffer must be of a size large enough to hold the converted address. | |
927 | * This size is provided in the form of a global defined variable MAX_IPSTRLEN | |
928 | * Should a buffer shorter be provided the string result will be truncated | |
929 | * at the length of the available buffer. | |
930 | * | |
931 | * A copy of the buffer is also returned for simple immediate display. | |
932 | */ | |
565b233e | 933 | char* IpAddress::NtoA(char* buf, const unsigned int blen, int force) const |
41d93087 | 934 | { |
935 | // Ensure we have a buffer. | |
26ac0430 | 936 | if (buf == NULL) { |
41d93087 | 937 | return NULL; |
938 | } | |
939 | ||
940 | /* some external code may have blindly memset a parent. */ | |
941 | /* thats okay, our default is known */ | |
26ac0430 | 942 | if ( IsAnyAddr() ) { |
41d93087 | 943 | #if USE_IPV6 |
d85c3078 | 944 | memcpy(buf,"::\0", min((const unsigned int)3,blen)); |
41d93087 | 945 | #else |
d85c3078 | 946 | memcpy(buf,"0.0.0.0\0", min((const unsigned int)8,blen)); |
41d93087 | 947 | #endif |
948 | return buf; | |
949 | } | |
950 | ||
951 | memset(buf,0,blen); // clear buffer before write | |
952 | ||
953 | /* Pure-IPv6 CANNOT be displayed in IPv4 format. */ | |
954 | /* However IPv4 CAN. */ | |
26ac0430 AJ |
955 | if ( force == AF_INET && !IsIPv4() ) { |
956 | if ( IsIPv6() ) { | |
d85c3078 | 957 | memcpy(buf, "{!IPv4}\0", min((const unsigned int)8,blen)); |
41d93087 | 958 | } |
959 | return buf; | |
960 | } | |
961 | ||
962 | #if USE_IPV6 | |
26ac0430 | 963 | if ( force == AF_INET6 || (force == AF_UNSPEC && IsIPv6()) ) { |
41d93087 | 964 | |
965 | xinet_ntop(AF_INET6, &m_SocketAddr.sin6_addr, buf, blen); | |
966 | ||
967 | } else if ( force == AF_INET || (force == AF_UNSPEC && IsIPv4()) ) { | |
968 | ||
969 | struct in_addr tmp; | |
970 | GetInAddr(tmp); | |
971 | xinet_ntop(AF_INET, &tmp, buf, blen); | |
972 | #else | |
26ac0430 | 973 | if ( force == AF_UNSPEC || (force == AF_INET && IsIPv4()) ) { |
41d93087 | 974 | xinet_ntop(AF_INET, &m_SocketAddr.sin_addr, buf, blen); |
975 | #endif | |
976 | } else { | |
977 | debugs(14,0,"WARNING: Corrupt IP Address details OR required to display in unknown format (" << | |
26ac0430 | 978 | force << "). accepted={" << AF_UNSPEC << "," << AF_INET << "," << AF_INET6 << "}"); |
41d93087 | 979 | fprintf(stderr,"WARNING: Corrupt IP Address details OR required to display in unknown format (%d). accepted={%d,%d,%d} ", |
980 | force, AF_UNSPEC, AF_INET, AF_INET6); | |
d85c3078 | 981 | memcpy(buf,"dead:beef::\0", min((const unsigned int)13,blen)); |
41d93087 | 982 | assert(false); |
983 | } | |
984 | ||
985 | return buf; | |
986 | } | |
987 | ||
565b233e | 988 | unsigned int IpAddress::ToHostname(char *buf, const unsigned int blen) const { |
41d93087 | 989 | char *p = buf; |
990 | ||
26ac0430 | 991 | if (IsIPv6() && blen > 0) { |
41d93087 | 992 | *p = '['; |
993 | p++; | |
994 | } | |
995 | ||
996 | /* 7 being space for [,], and port */ | |
26ac0430 | 997 | if ( IsIPv6() ) |
41d93087 | 998 | NtoA(p, blen-7, AF_INET6); |
999 | else | |
1000 | NtoA(p, blen-7, AF_INET); | |
1001 | ||
1002 | // find the end of the new string | |
26ac0430 | 1003 | while (*p != '\0' && p < buf+blen) |
41d93087 | 1004 | p++; |
1005 | ||
26ac0430 | 1006 | if (IsIPv6() && p < (buf+blen-1) ) { |
41d93087 | 1007 | *p = ']'; |
1008 | p++; | |
1009 | } | |
1010 | ||
1011 | /* terminate just in case. */ | |
1012 | *p = '\0'; | |
1013 | ||
1014 | /* return size of buffer now used */ | |
1015 | return (p - buf); | |
1016 | } | |
1017 | ||
565b233e | 1018 | char* IpAddress::ToURL(char* buf, unsigned int blen) const { |
41d93087 | 1019 | char *p = buf; |
1020 | ||
1021 | // Ensure we have a buffer. | |
1022 | ||
26ac0430 | 1023 | if (buf == NULL) { |
41d93087 | 1024 | return NULL; |
1025 | } | |
1026 | ||
1027 | p += ToHostname(p, blen); | |
1028 | ||
26ac0430 | 1029 | if (m_SocketAddr.sin6_port > 0 && p < (buf+blen-6) ) { |
41d93087 | 1030 | /* 6 is max length of expected ':port' (short int) */ |
1031 | snprintf(p, 6,":%d", GetPort() ); | |
1032 | } | |
1033 | ||
1034 | // force a null-terminated string | |
303bfd76 | 1035 | buf[blen-1] = '\0'; |
41d93087 | 1036 | |
1037 | return buf; | |
1038 | } | |
1039 | ||
565b233e | 1040 | void IpAddress::GetSockAddr(struct sockaddr_storage &addr, const int family) const { |
52b694c2 AJ |
1041 | struct sockaddr_in *sin = NULL; |
1042 | ||
26ac0430 | 1043 | if ( family == AF_INET && !IsIPv4()) { |
0e1a47f0 | 1044 | // FIXME INET6: caller using the wrong socket type! |
565b233e | 1045 | debugs(14, DBG_CRITICAL, HERE << "IpAddress::GetSockAddr : Cannot convert non-IPv4 to IPv4. from " << *this); |
0e1a47f0 AJ |
1046 | assert(false); |
1047 | } | |
1048 | ||
1049 | #if USE_IPV6 | |
26ac0430 | 1050 | if ( family == AF_INET6 || (family == AF_UNSPEC && IsIPv6()) ) { |
1ef0b9ce AJ |
1051 | struct sockaddr_in6 *ss6 = (struct sockaddr_in6*)&addr; |
1052 | GetSockAddr(*ss6); | |
26ac0430 | 1053 | } else if ( family == AF_INET || (family == AF_UNSPEC && IsIPv4()) ) { |
52b694c2 | 1054 | sin = (struct sockaddr_in*)&addr; |
1ef0b9ce | 1055 | GetSockAddr(*sin); |
52b694c2 AJ |
1056 | } else { |
1057 | IASSERT("false",false); | |
0e1a47f0 | 1058 | } |
8c37ea44 | 1059 | #else /* not USE_IPV6 */ |
52b694c2 | 1060 | sin = (struct sockaddr_in*)&addr; |
1ef0b9ce | 1061 | GetSockAddr(*sin); |
8c37ea44 | 1062 | #endif /* USE_IPV6 */ |
0e1a47f0 AJ |
1063 | } |
1064 | ||
565b233e | 1065 | void IpAddress::GetSockAddr(struct sockaddr_in &buf) const { |
41d93087 | 1066 | #if USE_IPV6 |
1067 | ||
26ac0430 | 1068 | if ( IsIPv4() ) { |
41d93087 | 1069 | buf.sin_family = AF_INET; |
1070 | buf.sin_port = m_SocketAddr.sin6_port; | |
1071 | Map6to4( m_SocketAddr.sin6_addr, buf.sin_addr); | |
26ac0430 | 1072 | } else { |
565b233e | 1073 | debugs(14, DBG_CRITICAL, HERE << "IpAddress::GetSockAddr : Cannot convert non-IPv4 to IPv4. from " << *this ); |
41d93087 | 1074 | |
1075 | memset(&buf,0xFFFFFFFF,sizeof(struct sockaddr_in)); | |
1076 | assert(false); | |
1077 | } | |
1078 | ||
1079 | #else | |
1080 | ||
1081 | memcpy(&buf, &m_SocketAddr, sizeof(struct sockaddr_in)); | |
1082 | ||
26ac0430 | 1083 | if (buf.sin_family == 0) { |
41d93087 | 1084 | buf.sin_family = AF_INET; |
1085 | } | |
1086 | ||
1087 | #endif | |
12f45551 AJ |
1088 | |
1089 | #if HAVE_SIN_LEN_IN_SAI | |
1090 | /* not all OS have this field, BUT when they do it can be a problem if set wrong */ | |
1ef0b9ce | 1091 | buf.sin_len = sizeof(struct sockaddr_in); |
12f45551 AJ |
1092 | #endif |
1093 | ||
41d93087 | 1094 | } |
1095 | ||
1096 | #if USE_IPV6 | |
1097 | ||
565b233e | 1098 | void IpAddress::GetSockAddr(struct sockaddr_in6 &buf) const { |
41d93087 | 1099 | memcpy(&buf, &m_SocketAddr, sizeof(struct sockaddr_in6)); |
1100 | /* maintain address family. It may have changed inside us. */ | |
1101 | buf.sin6_family = AF_INET6; | |
12f45551 AJ |
1102 | |
1103 | #if HAVE_SIN6_LEN_IN_SAI | |
1104 | /* not all OS have this field, BUT when they do it can be a problem if set wrong */ | |
1ef0b9ce | 1105 | buf.sin6_len = sizeof(struct sockaddr_in6); |
12f45551 | 1106 | #endif |
41d93087 | 1107 | } |
1108 | ||
1109 | #endif | |
1110 | ||
1111 | #if USE_IPV6 | |
1112 | ||
565b233e | 1113 | void IpAddress::Map4to6(const struct in_addr &in, struct in6_addr &out) const { |
41d93087 | 1114 | /* check for special cases */ |
1115 | ||
26ac0430 | 1116 | if ( in.s_addr == 0x00000000) { |
41d93087 | 1117 | /* ANYADDR */ |
1118 | ||
1119 | memset(&out, 0, sizeof(struct in6_addr)); | |
26ac0430 | 1120 | } else if ( in.s_addr == 0xFFFFFFFF) { |
41d93087 | 1121 | /* NOADDR */ |
1122 | ||
1123 | out.s6_addr32[0] = 0xFFFFFFFF; | |
1124 | out.s6_addr32[1] = 0xFFFFFFFF; | |
1125 | out.s6_addr32[2] = 0xFFFFFFFF; | |
1126 | out.s6_addr32[3] = 0xFFFFFFFF; | |
1127 | ||
26ac0430 | 1128 | } else { |
41d93087 | 1129 | /* general */ |
1130 | ||
1131 | memset(&out, 0, sizeof(struct in6_addr)); | |
1132 | out.s6_addr32[2] = htonl(0xFFFF); | |
1133 | out.s6_addr32[3] = in.s_addr; | |
1134 | } | |
1135 | } | |
1136 | ||
565b233e | 1137 | void IpAddress::Map6to4(const struct in6_addr &in, struct in_addr &out) const { |
41d93087 | 1138 | /* ANYADDR */ |
1139 | /* NOADDR */ | |
1140 | /* general */ | |
1141 | ||
1142 | memset(&out, 0, sizeof(struct in_addr)); | |
1143 | out.s_addr = in.s6_addr32[3]; | |
41d93087 | 1144 | } |
1145 | ||
1146 | #endif | |
1147 | ||
1148 | #if USE_IPV6 | |
565b233e | 1149 | void IpAddress::GetInAddr(in6_addr &buf) const { |
41d93087 | 1150 | memcpy(&buf, &m_SocketAddr.sin6_addr, sizeof(struct in6_addr)); |
1151 | } | |
1152 | ||
1153 | #endif | |
1154 | ||
565b233e | 1155 | bool IpAddress::GetInAddr(struct in_addr &buf) const { |
41d93087 | 1156 | |
1157 | #if USE_IPV6 | |
26ac0430 | 1158 | if ( IsIPv4() ) { |
41d93087 | 1159 | Map6to4((const in6_addr)m_SocketAddr.sin6_addr, buf); |
1160 | return true; | |
1161 | } | |
1162 | #else | |
1163 | ||
26ac0430 | 1164 | if ( IsIPv4() ) { |
41d93087 | 1165 | memcpy(&buf, &m_SocketAddr.sin_addr, sizeof(struct in_addr)); |
1166 | return true; | |
1167 | } | |
1168 | #endif | |
1169 | ||
1170 | // default: | |
1171 | // non-compatible IPv6 Pure Address | |
1172 | ||
565b233e | 1173 | debugs(14,1, HERE << "IpAddress::GetInAddr : Cannot convert non-IPv4 to IPv4. IPA=" << *this); |
41d93087 | 1174 | memset(&buf,0xFFFFFFFF,sizeof(struct in_addr)); |
1175 | assert(false); | |
1176 | return false; | |
1177 | } |