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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 | ||
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 | ||
e1381638 | 135 | for (; shift<sizeof(m_SocketAddr.sin6_addr) ; shift++) { |
41d93087 | 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 | ||
b5587d15 AJ |
173 | /* we have found a situation where mask forms or destroys a IPv4 map. */ |
174 | check4Mapped(); | |
175 | ||
41d93087 | 176 | return changes; |
177 | } | |
178 | ||
565b233e | 179 | bool IpAddress::ApplyMask(const unsigned int cidr, int mtype) |
41d93087 | 180 | { |
181 | uint8_t clearbits = 0; | |
182 | uint8_t* p = NULL; | |
183 | ||
184 | #if !USE_IPV6 | |
185 | IASSERT("mtype != AF_INET6", mtype != AF_INET6); /* using IPv6 in IPv4 is invalid. */ | |
186 | ||
26ac0430 | 187 | if (mtype == AF_UNSPEC) |
41d93087 | 188 | mtype = AF_INET; |
189 | ||
190 | #else | |
26ac0430 | 191 | if (mtype == AF_UNSPEC) |
41d93087 | 192 | mtype = AF_INET6; |
193 | ||
194 | #endif | |
195 | ||
196 | // validation and short-cuts. | |
197 | if (cidr > 128) | |
198 | return false; | |
199 | ||
200 | if (cidr > 32 && mtype == AF_INET) | |
201 | return false; | |
202 | ||
2c1b9590 AJ |
203 | if (cidr == 0) { |
204 | /* CIDR /0 is NoAddr regardless of the IPv4/IPv6 protocol */ | |
205 | SetNoAddr(); | |
206 | return true; | |
207 | } | |
208 | ||
41d93087 | 209 | clearbits = (uint8_t)( (mtype==AF_INET6?128:32) -cidr); |
210 | ||
211 | // short-cut | |
26ac0430 | 212 | if (clearbits == 0) |
41d93087 | 213 | return true; |
214 | ||
215 | #if USE_IPV6 | |
216 | ||
217 | p = (uint8_t*)(&m_SocketAddr.sin6_addr) + 15; | |
218 | ||
219 | #else | |
220 | ||
221 | p = (uint8_t*)(&m_SocketAddr.sin_addr) + 3; | |
222 | ||
223 | #endif | |
224 | ||
225 | for (; clearbits>0 && p >= (uint8_t*)&m_SocketAddr.sin6_addr ; p-- ) { | |
26ac0430 | 226 | if (clearbits < 8) { |
41d93087 | 227 | *p &= ((0xFF << clearbits) & 0xFF); |
228 | clearbits = 0; | |
229 | } else { | |
230 | *p &= 0x00; | |
231 | clearbits -= 8; | |
232 | } | |
233 | } | |
234 | ||
235 | return true; | |
236 | } | |
237 | ||
565b233e | 238 | bool IpAddress::IsSockAddr() const |
41d93087 | 239 | { |
240 | return (m_SocketAddr.sin6_port != 0); | |
241 | } | |
242 | ||
565b233e | 243 | bool IpAddress::IsIPv4() const |
41d93087 | 244 | { |
245 | #if USE_IPV6 | |
246 | ||
247 | return IsAnyAddr() || IsNoAddr() || | |
41d93087 | 248 | ( m_SocketAddr.sin6_addr.s6_addr32[0] == htonl(0x00000000) && |
249 | m_SocketAddr.sin6_addr.s6_addr32[1] == htonl(0x00000000) && | |
250 | m_SocketAddr.sin6_addr.s6_addr32[2] == htonl(0x0000FFFF) | |
251 | ); | |
252 | ||
253 | #else | |
254 | return true; // enforce IPv4 in IPv4-only mode. | |
255 | #endif | |
256 | } | |
257 | ||
565b233e | 258 | bool IpAddress::IsIPv6() const |
41d93087 | 259 | { |
260 | #if USE_IPV6 | |
261 | ||
262 | return IsAnyAddr() || IsNoAddr() || | |
41d93087 | 263 | !( m_SocketAddr.sin6_addr.s6_addr32[0] == htonl(0x00000000) && |
264 | m_SocketAddr.sin6_addr.s6_addr32[1] == htonl(0x00000000) && | |
265 | m_SocketAddr.sin6_addr.s6_addr32[2] == htonl(0x0000FFFF) | |
26ac0430 | 266 | ); |
41d93087 | 267 | #else |
268 | return false; // enforce IPv4 in IPv4-only mode. | |
269 | #endif | |
270 | } | |
271 | ||
565b233e | 272 | bool IpAddress::IsAnyAddr() const |
41d93087 | 273 | { |
274 | #if USE_IPV6 | |
275 | return m_SocketAddr.sin6_addr.s6_addr32[0] == 0 | |
276 | && m_SocketAddr.sin6_addr.s6_addr32[1] == 0 | |
277 | && m_SocketAddr.sin6_addr.s6_addr32[2] == 0 | |
278 | && m_SocketAddr.sin6_addr.s6_addr32[3] == 0 | |
279 | ; | |
280 | #else | |
281 | ||
282 | return (INADDR_ANY == m_SocketAddr.sin_addr.s_addr); | |
283 | #endif | |
284 | } | |
285 | ||
286 | /// NOTE: Does NOT clear the Port stored. Ony the Address and Type. | |
565b233e | 287 | void IpAddress::SetAnyAddr() |
41d93087 | 288 | { |
289 | #if USE_IPV6 | |
290 | memset(&m_SocketAddr.sin6_addr, 0, sizeof(struct in6_addr) ); | |
291 | #else | |
292 | memset(&m_SocketAddr.sin_addr, 0, sizeof(struct in_addr) ); | |
293 | #endif | |
294 | } | |
295 | ||
565b233e AJ |
296 | /// NOTE: completely empties the IpAddress structure. Address, Port, Type, everything. |
297 | void IpAddress::SetEmpty() | |
41d93087 | 298 | { |
299 | memset(&m_SocketAddr, 0, sizeof(m_SocketAddr) ); | |
300 | } | |
301 | ||
565b233e | 302 | bool IpAddress::SetIPv4() |
41d93087 | 303 | { |
304 | #if USE_IPV6 | |
305 | ||
26ac0430 | 306 | if ( IsLocalhost() ) { |
41d93087 | 307 | m_SocketAddr.sin6_addr.s6_addr32[2] = htonl(0xffff); |
308 | m_SocketAddr.sin6_addr.s6_addr32[3] = htonl(0x7F000001); | |
309 | return true; | |
310 | } | |
41d93087 | 311 | |
26ac0430 | 312 | if ( IsAnyAddr() ) { |
41d93087 | 313 | m_SocketAddr.sin6_addr.s6_addr32[2] = htonl(0xffff); |
314 | return true; | |
315 | } | |
316 | ||
26ac0430 | 317 | if ( IsIPv4()) |
41d93087 | 318 | return true; |
319 | ||
320 | // anything non-IPv4 and non-convertable is BAD. | |
321 | return false; | |
322 | #else | |
323 | return true; // Always IPv4 in IPv4-only builds. | |
324 | #endif | |
325 | } | |
326 | ||
565b233e | 327 | bool IpAddress::IsLocalhost() const |
41d93087 | 328 | { |
329 | #if USE_IPV6 | |
f8f9eafb | 330 | return ( m_SocketAddr.sin6_addr.s6_addr32[0] == 0 |
26ac0430 AJ |
331 | && m_SocketAddr.sin6_addr.s6_addr32[1] == 0 |
332 | && m_SocketAddr.sin6_addr.s6_addr32[2] == 0 | |
333 | && m_SocketAddr.sin6_addr.s6_addr32[3] == htonl(0x1) | |
f8f9eafb | 334 | ) |
26ac0430 | 335 | || |
f8f9eafb | 336 | ( m_SocketAddr.sin6_addr.s6_addr32[0] == 0 |
26ac0430 AJ |
337 | && m_SocketAddr.sin6_addr.s6_addr32[1] == 0 |
338 | && m_SocketAddr.sin6_addr.s6_addr32[2] == htonl(0xffff) | |
339 | && m_SocketAddr.sin6_addr.s6_addr32[3] == htonl(0x7F000001) | |
a5aa3fbc | 340 | ); |
41d93087 | 341 | #else |
342 | ||
343 | return (htonl(0x7F000001) == m_SocketAddr.sin_addr.s_addr); | |
344 | #endif | |
345 | } | |
346 | ||
565b233e | 347 | void IpAddress::SetLocalhost() |
41d93087 | 348 | { |
349 | #if USE_IPV6 | |
350 | SetAnyAddr(); | |
351 | m_SocketAddr.sin6_addr.s6_addr[15] = 0x1; | |
352 | m_SocketAddr.sin6_family = AF_INET6; | |
353 | ||
354 | #else | |
355 | m_SocketAddr.sin_addr.s_addr = htonl(0x7F000001); | |
356 | m_SocketAddr.sin_family = AF_INET; | |
357 | #endif | |
358 | } | |
359 | ||
a98c2da5 AJ |
360 | bool IpAddress::IsSiteLocal6() const |
361 | { | |
362 | #if USE_IPV6 | |
363 | return (m_SocketAddr.sin6_addr.s6_addr32[0] & htonl(0xff80)) == htonl(0xfe80); | |
364 | #else | |
365 | return false; | |
366 | #endif | |
367 | } | |
368 | ||
369 | bool IpAddress::IsSlaac() const | |
370 | { | |
371 | #if USE_IPV6 | |
05320519 | 372 | return (m_SocketAddr.sin6_addr.s6_addr32[2] & htonl(0x000000ff)) == htonl(0x000000ff) && |
a98c2da5 AJ |
373 | (m_SocketAddr.sin6_addr.s6_addr32[3] & htonl(0xff000000)) == htonl(0xfe000000); |
374 | #else | |
375 | return false; | |
376 | #endif | |
377 | } | |
378 | ||
565b233e | 379 | bool IpAddress::IsNoAddr() const |
41d93087 | 380 | { |
381 | // IFF the address == 0xff..ff (all ones) | |
382 | #if USE_IPV6 | |
383 | return m_SocketAddr.sin6_addr.s6_addr32[0] == 0xFFFFFFFF | |
384 | && m_SocketAddr.sin6_addr.s6_addr32[1] == 0xFFFFFFFF | |
385 | && m_SocketAddr.sin6_addr.s6_addr32[2] == 0xFFFFFFFF | |
386 | && m_SocketAddr.sin6_addr.s6_addr32[3] == 0xFFFFFFFF | |
387 | ; | |
388 | #else | |
389 | ||
390 | return 0xFFFFFFFF == m_SocketAddr.sin_addr.s_addr; | |
391 | #endif | |
392 | } | |
393 | ||
565b233e | 394 | void IpAddress::SetNoAddr() |
41d93087 | 395 | { |
396 | #if USE_IPV6 | |
397 | memset(&m_SocketAddr.sin6_addr, 0xFFFFFFFF, sizeof(struct in6_addr) ); | |
398 | m_SocketAddr.sin6_family = AF_INET6; | |
399 | #else | |
400 | memset(&m_SocketAddr.sin_addr, 0xFFFFFFFF, sizeof(struct in_addr) ); | |
401 | m_SocketAddr.sin_family = AF_INET; | |
402 | #endif | |
403 | } | |
404 | ||
405 | #if USE_IPV6 | |
406 | ||
565b233e | 407 | bool IpAddress::GetReverseString6(char buf[MAX_IPSTRLEN], const struct in6_addr &dat) const |
41d93087 | 408 | { |
409 | char *p = buf; | |
410 | unsigned char const *r = dat.s6_addr; | |
411 | ||
412 | /* RFC1886 says: */ | |
413 | /* 4321:0:1:2:3:4:567:89ab */ | |
414 | /* must be sent */ | |
415 | /* 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. */ | |
416 | ||
417 | /* Work from the binary field. Anything else may have representation changes. */ | |
418 | /* The sin6_port and sin6_addr members shall be in network byte order. */ | |
419 | ||
420 | /* Compile Err: 'Too many arguments for format. */ | |
421 | ||
26ac0430 | 422 | for (int i = 15; i >= 0; i--, p+=4) { |
41d93087 | 423 | snprintf(p, 5, "%x.%x.", ((r[i])&0xf), (((r[i])>>4)&0xf) ); |
424 | } | |
425 | ||
426 | /* RFC3152 says: */ | |
427 | /* ip6.int is now deprecated TLD, use ip6.arpa instead. */ | |
428 | snprintf(p,10,"ip6.arpa."); | |
429 | ||
430 | return true; | |
431 | } | |
432 | ||
433 | #endif | |
434 | ||
565b233e | 435 | bool IpAddress::GetReverseString4(char buf[MAX_IPSTRLEN], const struct in_addr &dat) const |
41d93087 | 436 | { |
437 | unsigned int i = (unsigned int) ntohl(dat.s_addr); | |
438 | snprintf(buf, 32, "%u.%u.%u.%u.in-addr.arpa.", | |
439 | i & 255, | |
440 | (i >> 8) & 255, | |
441 | (i >> 16) & 255, | |
442 | (i >> 24) & 255); | |
443 | return true; | |
444 | } | |
445 | ||
565b233e | 446 | bool IpAddress::GetReverseString(char buf[MAX_IPSTRLEN], int show_type) const |
41d93087 | 447 | { |
448 | ||
26ac0430 | 449 | if (show_type == AF_UNSPEC) { |
41d93087 | 450 | #if USE_IPV6 |
451 | show_type = IsIPv6() ? AF_INET6 : AF_INET ; | |
452 | #else | |
453 | show_type = AF_INET; | |
454 | #endif | |
455 | } | |
456 | ||
457 | if (show_type == AF_INET && IsIPv4()) { | |
458 | #if USE_IPV6 | |
459 | ||
460 | return GetReverseString4(buf, *(struct in_addr*)&m_SocketAddr.sin6_addr.s6_addr32[3] ); | |
461 | } else if ( show_type == AF_INET6 && IsIPv6() ) { | |
462 | return GetReverseString6(buf, m_SocketAddr.sin6_addr); | |
463 | #else | |
464 | return GetReverseString4(buf, m_SocketAddr.sin_addr); | |
465 | #endif | |
466 | } | |
467 | ||
468 | debugs(14,0, "Unable to convert '" << NtoA(buf,MAX_IPSTRLEN) << "' to the rDNS type requested."); | |
469 | ||
470 | buf[0] = '\0'; | |
471 | ||
472 | return false; | |
473 | } | |
474 | ||
9fb4efad | 475 | IpAddress& IpAddress::operator =(const IpAddress &s) |
41d93087 | 476 | { |
565b233e | 477 | memcpy(this, &s, sizeof(IpAddress)); |
41d93087 | 478 | return *this; |
479 | }; | |
480 | ||
23f6a720 | 481 | IpAddress::IpAddress(const char*s) |
41d93087 | 482 | { |
483 | SetEmpty(); | |
484 | operator=(s); | |
485 | } | |
486 | ||
565b233e | 487 | bool IpAddress::operator =(const char* s) |
41d93087 | 488 | { |
489 | return LookupHostIP(s, true); | |
490 | } | |
491 | ||
565b233e | 492 | bool IpAddress::GetHostByName(const char* s) |
41d93087 | 493 | { |
494 | return LookupHostIP(s, false); | |
495 | } | |
496 | ||
565b233e | 497 | bool IpAddress::LookupHostIP(const char *s, bool nodns) |
41d93087 | 498 | { |
499 | int err = 0; | |
500 | ||
501 | short port = 0; | |
502 | ||
503 | struct addrinfo *res = NULL; | |
504 | ||
505 | struct addrinfo want; | |
506 | ||
507 | memset(&want, 0, sizeof(struct addrinfo)); | |
26ac0430 | 508 | if (nodns) { |
41d93087 | 509 | want.ai_flags = AI_NUMERICHOST; // prevent actual DNS lookups! |
510 | } | |
511 | #if !USE_IPV6 | |
512 | want.ai_family = AF_INET; | |
513 | #endif | |
514 | ||
515 | if ( (err = xgetaddrinfo(s, NULL, &want, &res)) != 0) { | |
3f697f0d | 516 | debugs(14,3, HERE << "Given Bad IP '" << s << "': " << xgai_strerror(err) ); |
41d93087 | 517 | /* free the memory xgetaddrinfo() dynamically allocated. */ |
26ac0430 | 518 | if (res) { |
41d93087 | 519 | xfreeaddrinfo(res); |
520 | res = NULL; | |
521 | } | |
522 | return false; | |
523 | } | |
524 | ||
525 | /* | |
526 | * NP: =(sockaddr_*) may alter the port. we don't want that. | |
527 | * all we have been given as input was an IPA. | |
528 | */ | |
529 | port = GetPort(); | |
530 | operator=(*res); | |
531 | SetPort(port); | |
532 | ||
533 | /* free the memory xgetaddrinfo() dynamically allocated. */ | |
534 | xfreeaddrinfo(res); | |
535 | ||
536 | res = NULL; | |
537 | ||
538 | return true; | |
539 | } | |
540 | ||
23f6a720 | 541 | IpAddress::IpAddress(struct sockaddr_in const &s) |
41d93087 | 542 | { |
543 | SetEmpty(); | |
544 | operator=(s); | |
545 | }; | |
546 | ||
23f6a720 | 547 | IpAddress& IpAddress::operator =(struct sockaddr_in const &s) |
41d93087 | 548 | { |
549 | #if USE_IPV6 | |
550 | Map4to6((const in_addr)s.sin_addr, m_SocketAddr.sin6_addr); | |
551 | m_SocketAddr.sin6_port = s.sin_port; | |
552 | m_SocketAddr.sin6_family = AF_INET6; | |
553 | #else | |
554 | ||
555 | memcpy(&m_SocketAddr, &s, sizeof(struct sockaddr_in)); | |
556 | #endif | |
557 | ||
b5587d15 AJ |
558 | /* maintain stored family values properly */ |
559 | check4Mapped(); | |
560 | ||
41d93087 | 561 | return *this; |
562 | }; | |
563 | ||
23f6a720 | 564 | IpAddress& IpAddress::operator =(const struct sockaddr_storage &s) |
0e1a47f0 AJ |
565 | { |
566 | #if USE_IPV6 | |
567 | /* some AF_* magic to tell socket types apart and what we need to do */ | |
26ac0430 | 568 | if (s.ss_family == AF_INET6) { |
0e1a47f0 | 569 | memcpy(&m_SocketAddr, &s, sizeof(struct sockaddr_in)); |
26ac0430 | 570 | } else { // convert it to our storage mapping. |
0e1a47f0 AJ |
571 | struct sockaddr_in *sin = (struct sockaddr_in*)&s; |
572 | m_SocketAddr.sin6_port = sin->sin_port; | |
573 | Map4to6( sin->sin_addr, m_SocketAddr.sin6_addr); | |
574 | } | |
575 | #else | |
576 | memcpy(&m_SocketAddr, &s, sizeof(struct sockaddr_in)); | |
577 | #endif | |
578 | return *this; | |
579 | }; | |
580 | ||
b5587d15 AJ |
581 | void IpAddress::check4Mapped() |
582 | { | |
583 | // obsolete. | |
584 | // TODO use this NOW to set the sin6_family properly on exporting. not on import. | |
585 | } | |
586 | ||
41d93087 | 587 | #if USE_IPV6 |
23f6a720 | 588 | IpAddress::IpAddress(struct sockaddr_in6 const &s) |
41d93087 | 589 | { |
590 | SetEmpty(); | |
591 | operator=(s); | |
592 | }; | |
593 | ||
23f6a720 | 594 | IpAddress& IpAddress::operator =(struct sockaddr_in6 const &s) |
41d93087 | 595 | { |
596 | memcpy(&m_SocketAddr, &s, sizeof(struct sockaddr_in6)); | |
b5587d15 AJ |
597 | |
598 | /* maintain address family properly */ | |
599 | check4Mapped(); | |
41d93087 | 600 | return *this; |
601 | }; | |
602 | ||
603 | #endif | |
604 | ||
23f6a720 | 605 | IpAddress::IpAddress(struct in_addr const &s) |
41d93087 | 606 | { |
607 | SetEmpty(); | |
608 | operator=(s); | |
609 | }; | |
610 | ||
23f6a720 | 611 | IpAddress& IpAddress::operator =(struct in_addr const &s) |
41d93087 | 612 | { |
613 | #if USE_IPV6 | |
614 | Map4to6((const in_addr)s, m_SocketAddr.sin6_addr); | |
615 | m_SocketAddr.sin6_family = AF_INET6; | |
b5587d15 | 616 | |
41d93087 | 617 | #else |
b5587d15 | 618 | |
41d93087 | 619 | memcpy(&m_SocketAddr.sin_addr, &s, sizeof(struct in_addr)); |
b5587d15 | 620 | |
41d93087 | 621 | #endif |
b5587d15 AJ |
622 | |
623 | /* maintain stored family type properly */ | |
624 | check4Mapped(); | |
625 | ||
41d93087 | 626 | return *this; |
627 | }; | |
628 | ||
629 | #if USE_IPV6 | |
630 | ||
23f6a720 | 631 | IpAddress::IpAddress(struct in6_addr const &s) |
41d93087 | 632 | { |
633 | SetEmpty(); | |
634 | operator=(s); | |
635 | }; | |
636 | ||
23f6a720 | 637 | IpAddress& IpAddress::operator =(struct in6_addr const &s) |
41d93087 | 638 | { |
b5587d15 | 639 | |
41d93087 | 640 | memcpy(&m_SocketAddr.sin6_addr, &s, sizeof(struct in6_addr)); |
641 | m_SocketAddr.sin6_family = AF_INET6; | |
b5587d15 AJ |
642 | |
643 | /* maintain address family type properly */ | |
644 | check4Mapped(); | |
645 | ||
41d93087 | 646 | return *this; |
647 | }; | |
648 | ||
649 | #endif | |
650 | ||
9fb4efad | 651 | IpAddress::IpAddress(const IpAddress &s) |
41d93087 | 652 | { |
653 | SetEmpty(); | |
654 | operator=(s); | |
655 | } | |
656 | ||
9fb4efad | 657 | IpAddress::IpAddress(IpAddress *s) |
41d93087 | 658 | { |
659 | SetEmpty(); | |
1a1f4104 | 660 | if (s) |
af6a12ee | 661 | memcpy(this, s, sizeof(IpAddress)); |
41d93087 | 662 | } |
663 | ||
23f6a720 | 664 | IpAddress::IpAddress(const struct hostent &s) |
41d93087 | 665 | { |
666 | SetEmpty(); | |
667 | operator=(s); | |
668 | } | |
669 | ||
565b233e | 670 | bool IpAddress::operator =(const struct hostent &s) |
41d93087 | 671 | { |
672 | ||
673 | struct in_addr* ipv4 = NULL; | |
674 | ||
675 | struct in6_addr* ipv6 = NULL; | |
676 | ||
677 | //struct hostent { | |
678 | // char *h_name; /* official name of host */ | |
679 | // char **h_aliases; /* alias list */ | |
680 | // int h_addrtype; /* host address type */ | |
681 | // int h_length; /* length of address */ | |
682 | // char **h_addr_list; /* list of addresses */ | |
683 | //} | |
684 | ||
26ac0430 | 685 | switch (s.h_addrtype) { |
41d93087 | 686 | |
687 | case AF_INET: | |
688 | ipv4 = (in_addr*)(s.h_addr_list[0]); | |
689 | /* this */ | |
690 | operator=(*ipv4); | |
691 | break; | |
692 | ||
693 | case AF_INET6: | |
694 | ipv6 = (in6_addr*)(s.h_addr_list[0]); | |
695 | #if USE_IPV6 | |
696 | /* this */ | |
697 | operator=(*ipv6); | |
698 | #else | |
699 | ||
700 | debugs(14,1, HERE << "Discarded IPv6 Address. Protocol disabled."); | |
701 | ||
702 | // FIXME see if there is another address in the list that might be usable ?? | |
703 | return false; | |
704 | #endif | |
705 | ||
706 | break; | |
707 | ||
708 | default: | |
26ac0430 AJ |
709 | IASSERT("false",false); |
710 | return false; | |
41d93087 | 711 | } |
712 | ||
713 | return true; | |
714 | } | |
715 | ||
23f6a720 | 716 | IpAddress::IpAddress(const struct addrinfo &s) |
41d93087 | 717 | { |
718 | SetEmpty(); | |
719 | operator=(s); | |
720 | } | |
721 | ||
565b233e | 722 | bool IpAddress::operator =(const struct addrinfo &s) |
41d93087 | 723 | { |
724 | ||
725 | struct sockaddr_in* ipv4 = NULL; | |
726 | ||
727 | struct sockaddr_in6* ipv6 = NULL; | |
728 | ||
729 | //struct addrinfo { | |
730 | // int ai_flags; /* input flags */ | |
731 | // int ai_family; /* protocol family for socket */ | |
732 | // int ai_socktype; /* socket type */ | |
733 | // int ai_protocol; /* protocol for socket */ | |
734 | // socklen_t ai_addrlen; /* length of socket-address */ | |
735 | // struct sockaddr *ai_addr; /* socket-address for socket */ | |
736 | // char *ai_canonname; /* canonical name for service location */ | |
737 | // struct addrinfo *ai_next; /* pointer to next in list */ | |
738 | //} | |
739 | ||
26ac0430 | 740 | switch (s.ai_family) { |
41d93087 | 741 | |
742 | case AF_INET: | |
743 | ipv4 = (sockaddr_in*)(s.ai_addr); | |
744 | /* this */ | |
745 | assert(ipv4); | |
746 | operator=(*ipv4); | |
747 | break; | |
748 | ||
749 | case AF_INET6: | |
750 | ipv6 = (sockaddr_in6*)(s.ai_addr); | |
751 | #if USE_IPV6 | |
752 | /* this */ | |
753 | assert(ipv6); | |
754 | operator=(*ipv6); | |
755 | #else | |
756 | ||
757 | debugs(14,1, HERE << "Discarded IPv6 Address. Protocol disabled."); | |
758 | ||
759 | // see if there is another address in the list that might be usable ?? | |
760 | ||
761 | if (s.ai_next) | |
762 | return operator=(*s.ai_next); | |
763 | else | |
764 | return false; | |
765 | ||
766 | #endif | |
767 | break; | |
768 | ||
769 | case AF_UNSPEC: | |
770 | default: | |
771 | // attempt to handle partially initialised addrinfo. | |
772 | // such as those where data only comes from getsockopt() | |
26ac0430 | 773 | if (s.ai_addr != NULL) { |
41d93087 | 774 | #if USE_IPV6 |
26ac0430 | 775 | if (s.ai_addrlen == sizeof(struct sockaddr_in6)) { |
41d93087 | 776 | operator=(*((struct sockaddr_in6*)s.ai_addr)); |
777 | return true; | |
26ac0430 | 778 | } else |
41d93087 | 779 | #endif |
26ac0430 AJ |
780 | if (s.ai_addrlen == sizeof(struct sockaddr_in)) { |
781 | operator=(*((struct sockaddr_in*)s.ai_addr)); | |
782 | return true; | |
783 | } | |
41d93087 | 784 | } |
785 | return false; | |
786 | } | |
787 | ||
788 | return true; | |
789 | } | |
790 | ||
565b233e | 791 | void IpAddress::GetAddrInfo(struct addrinfo *&dst, int force) const |
41d93087 | 792 | { |
26ac0430 | 793 | if (dst == NULL) { |
41d93087 | 794 | dst = new addrinfo; |
795 | } | |
796 | ||
797 | memset(dst, 0, sizeof(struct addrinfo)); | |
798 | ||
799 | // set defaults | |
800 | dst->ai_flags = AI_NUMERICHOST; | |
801 | ||
26ac0430 | 802 | if (dst->ai_socktype == 0) |
41d93087 | 803 | dst->ai_socktype = SOCK_STREAM; |
804 | ||
26ac0430 | 805 | if (dst->ai_socktype == SOCK_STREAM // implies TCP |
41d93087 | 806 | && dst->ai_protocol == 0) |
807 | dst->ai_protocol = IPPROTO_TCP; | |
808 | ||
26ac0430 | 809 | if (dst->ai_socktype == SOCK_DGRAM // implies UDP |
41d93087 | 810 | && dst->ai_protocol == 0) |
811 | dst->ai_protocol = IPPROTO_UDP; | |
812 | ||
813 | #if USE_IPV6 | |
26ac0430 | 814 | if ( force == AF_INET6 || (force == AF_UNSPEC && IsIPv6()) ) { |
41d93087 | 815 | dst->ai_addr = (struct sockaddr*)new sockaddr_in6; |
816 | ||
817 | memset(dst->ai_addr,0,sizeof(struct sockaddr_in6)); | |
818 | ||
819 | GetSockAddr(*((struct sockaddr_in6*)dst->ai_addr)); | |
820 | ||
821 | dst->ai_addrlen = sizeof(struct sockaddr_in6); | |
822 | ||
823 | dst->ai_family = ((struct sockaddr_in6*)dst->ai_addr)->sin6_family; | |
9d92af86 AJ |
824 | |
825 | #if 0 | |
826 | /** | |
827 | * Enable only if you must and please report to squid-dev if you find a need for this. | |
828 | * | |
829 | * Vista may need this to cope with dual-stack (unsetting IP6_V6ONLY). | |
830 | * http://msdn.microsoft.com/en-us/library/ms738574(VS.85).aspx | |
831 | * Linux appears to only do some things when its present. | |
832 | * (93) Bad Protocol | |
833 | * FreeBSD dies horribly when using dual-stack with it set. | |
834 | * (43) Protocol not supported | |
835 | */ | |
41d93087 | 836 | dst->ai_protocol = IPPROTO_IPV6; |
9d92af86 AJ |
837 | #endif |
838 | ||
41d93087 | 839 | } else |
840 | #endif | |
26ac0430 | 841 | if ( force == AF_INET || (force == AF_UNSPEC && IsIPv4()) ) { |
41d93087 | 842 | |
843 | dst->ai_addr = (struct sockaddr*)new sockaddr_in; | |
844 | ||
845 | memset(dst->ai_addr,0,sizeof(struct sockaddr_in)); | |
846 | ||
847 | GetSockAddr(*((struct sockaddr_in*)dst->ai_addr)); | |
848 | ||
849 | dst->ai_addrlen = sizeof(struct sockaddr_in); | |
850 | ||
851 | dst->ai_family = ((struct sockaddr_in*)dst->ai_addr)->sin_family; | |
26ac0430 | 852 | } else { |
41d93087 | 853 | IASSERT("false",false); |
854 | } | |
855 | } | |
856 | ||
565b233e | 857 | void IpAddress::InitAddrInfo(struct addrinfo *&ai) const |
41d93087 | 858 | { |
26ac0430 | 859 | if (ai == NULL) { |
41d93087 | 860 | ai = new addrinfo; |
861 | memset(ai,0,sizeof(struct addrinfo)); | |
862 | } | |
863 | ||
864 | // remove any existing data. | |
26ac0430 | 865 | if (ai->ai_addr) delete ai->ai_addr; |
41d93087 | 866 | |
867 | ai->ai_addr = (struct sockaddr*)new sockaddr_in6; | |
868 | memset(ai->ai_addr, 0, sizeof(struct sockaddr_in6)); | |
869 | ||
870 | ai->ai_addrlen = sizeof(struct sockaddr_in6); | |
871 | ||
872 | } | |
873 | ||
565b233e | 874 | void IpAddress::FreeAddrInfo(struct addrinfo *&ai) const |
41d93087 | 875 | { |
26ac0430 | 876 | if (ai == NULL) return; |
41d93087 | 877 | |
26ac0430 | 878 | if (ai->ai_addr) delete ai->ai_addr; |
41d93087 | 879 | |
880 | ai->ai_addr = NULL; | |
881 | ||
882 | ai->ai_addrlen = 0; | |
883 | ||
884 | // NP: name fields are NOT allocated at present. | |
885 | delete ai; | |
886 | ||
887 | ai = NULL; | |
888 | } | |
889 | ||
23f6a720 | 890 | int IpAddress::matchIPAddr(const IpAddress &rhs) const |
41d93087 | 891 | { |
892 | #if USE_IPV6 | |
893 | uint8_t *l = (uint8_t*)m_SocketAddr.sin6_addr.s6_addr; | |
894 | uint8_t *r = (uint8_t*)rhs.m_SocketAddr.sin6_addr.s6_addr; | |
895 | #else | |
896 | uint8_t *l = (uint8_t*)&m_SocketAddr.sin_addr.s_addr; | |
897 | uint8_t *r = (uint8_t*)&rhs.m_SocketAddr.sin_addr.s_addr; | |
898 | #endif | |
899 | ||
900 | // loop a byte-wise compare | |
901 | // NP: match MUST be R-to-L : L-to-R produces inconsistent gt/lt results at varying CIDR | |
902 | // expected difference on CIDR is gt/eq or lt/eq ONLY. | |
26ac0430 | 903 | for (unsigned int i = 0 ; i < sizeof(m_SocketAddr.sin6_addr) ; i++) { |
41d93087 | 904 | |
26ac0430 | 905 | if (l[i] < r[i]) |
41d93087 | 906 | return -1; |
907 | ||
26ac0430 | 908 | if (l[i] > r[i]) |
41d93087 | 909 | return 1; |
910 | } | |
911 | ||
912 | return 0; | |
913 | } | |
914 | ||
23f6a720 | 915 | bool IpAddress::operator ==(const IpAddress &s) const |
41d93087 | 916 | { |
917 | return (0 == matchIPAddr(s)); | |
918 | } | |
919 | ||
23f6a720 | 920 | bool IpAddress::operator !=(const IpAddress &s) const |
41d93087 | 921 | { |
922 | return ! ( operator==(s) ); | |
923 | } | |
924 | ||
23f6a720 | 925 | bool IpAddress::operator <=(const IpAddress &rhs) const |
41d93087 | 926 | { |
26ac0430 | 927 | if (IsAnyAddr() && !rhs.IsAnyAddr()) |
41d93087 | 928 | return true; |
929 | ||
930 | return (matchIPAddr(rhs) <= 0); | |
931 | } | |
932 | ||
23f6a720 | 933 | bool IpAddress::operator >=(const IpAddress &rhs) const |
41d93087 | 934 | { |
26ac0430 | 935 | if (IsNoAddr() && !rhs.IsNoAddr()) |
41d93087 | 936 | return true; |
937 | ||
938 | return ( matchIPAddr(rhs) >= 0); | |
939 | } | |
940 | ||
23f6a720 | 941 | bool IpAddress::operator >(const IpAddress &rhs) const |
41d93087 | 942 | { |
26ac0430 | 943 | if (IsNoAddr() && !rhs.IsNoAddr()) |
41d93087 | 944 | return true; |
945 | ||
946 | return ( matchIPAddr(rhs) > 0); | |
947 | } | |
948 | ||
23f6a720 | 949 | bool IpAddress::operator <(const IpAddress &rhs) const |
41d93087 | 950 | { |
26ac0430 | 951 | if (IsNoAddr() && !rhs.IsNoAddr()) |
41d93087 | 952 | return true; |
953 | ||
954 | return ( matchIPAddr(rhs) < 0); | |
955 | } | |
956 | ||
565b233e | 957 | u_short IpAddress::GetPort() const |
41d93087 | 958 | { |
959 | return ntohs( m_SocketAddr.sin6_port ); | |
960 | } | |
961 | ||
565b233e | 962 | u_short IpAddress::SetPort(u_short prt) |
41d93087 | 963 | { |
964 | m_SocketAddr.sin6_port = htons(prt); | |
965 | ||
966 | return prt; | |
967 | } | |
968 | ||
969 | /** | |
970 | * NtoA Given a buffer writes a readable ascii version of the IPA and/or port stored | |
971 | * | |
972 | * Buffer must be of a size large enough to hold the converted address. | |
973 | * This size is provided in the form of a global defined variable MAX_IPSTRLEN | |
974 | * Should a buffer shorter be provided the string result will be truncated | |
975 | * at the length of the available buffer. | |
976 | * | |
977 | * A copy of the buffer is also returned for simple immediate display. | |
978 | */ | |
565b233e | 979 | char* IpAddress::NtoA(char* buf, const unsigned int blen, int force) const |
41d93087 | 980 | { |
981 | // Ensure we have a buffer. | |
26ac0430 | 982 | if (buf == NULL) { |
41d93087 | 983 | return NULL; |
984 | } | |
985 | ||
986 | /* some external code may have blindly memset a parent. */ | |
987 | /* thats okay, our default is known */ | |
26ac0430 | 988 | if ( IsAnyAddr() ) { |
41d93087 | 989 | #if USE_IPV6 |
d85c3078 | 990 | memcpy(buf,"::\0", min((const unsigned int)3,blen)); |
41d93087 | 991 | #else |
d85c3078 | 992 | memcpy(buf,"0.0.0.0\0", min((const unsigned int)8,blen)); |
41d93087 | 993 | #endif |
994 | return buf; | |
995 | } | |
996 | ||
997 | memset(buf,0,blen); // clear buffer before write | |
998 | ||
999 | /* Pure-IPv6 CANNOT be displayed in IPv4 format. */ | |
1000 | /* However IPv4 CAN. */ | |
26ac0430 AJ |
1001 | if ( force == AF_INET && !IsIPv4() ) { |
1002 | if ( IsIPv6() ) { | |
d85c3078 | 1003 | memcpy(buf, "{!IPv4}\0", min((const unsigned int)8,blen)); |
41d93087 | 1004 | } |
1005 | return buf; | |
1006 | } | |
1007 | ||
1008 | #if USE_IPV6 | |
26ac0430 | 1009 | if ( force == AF_INET6 || (force == AF_UNSPEC && IsIPv6()) ) { |
41d93087 | 1010 | |
1011 | xinet_ntop(AF_INET6, &m_SocketAddr.sin6_addr, buf, blen); | |
1012 | ||
1013 | } else if ( force == AF_INET || (force == AF_UNSPEC && IsIPv4()) ) { | |
1014 | ||
1015 | struct in_addr tmp; | |
1016 | GetInAddr(tmp); | |
1017 | xinet_ntop(AF_INET, &tmp, buf, blen); | |
1018 | #else | |
26ac0430 | 1019 | if ( force == AF_UNSPEC || (force == AF_INET && IsIPv4()) ) { |
41d93087 | 1020 | xinet_ntop(AF_INET, &m_SocketAddr.sin_addr, buf, blen); |
1021 | #endif | |
1022 | } else { | |
1023 | debugs(14,0,"WARNING: Corrupt IP Address details OR required to display in unknown format (" << | |
26ac0430 | 1024 | force << "). accepted={" << AF_UNSPEC << "," << AF_INET << "," << AF_INET6 << "}"); |
41d93087 | 1025 | fprintf(stderr,"WARNING: Corrupt IP Address details OR required to display in unknown format (%d). accepted={%d,%d,%d} ", |
1026 | force, AF_UNSPEC, AF_INET, AF_INET6); | |
d85c3078 | 1027 | memcpy(buf,"dead:beef::\0", min((const unsigned int)13,blen)); |
41d93087 | 1028 | assert(false); |
1029 | } | |
1030 | ||
1031 | return buf; | |
1032 | } | |
1033 | ||
e1381638 AJ |
1034 | unsigned int IpAddress::ToHostname(char *buf, const unsigned int blen) const |
1035 | { | |
41d93087 | 1036 | char *p = buf; |
1037 | ||
26ac0430 | 1038 | if (IsIPv6() && blen > 0) { |
41d93087 | 1039 | *p = '['; |
1040 | p++; | |
1041 | } | |
1042 | ||
1043 | /* 7 being space for [,], and port */ | |
26ac0430 | 1044 | if ( IsIPv6() ) |
41d93087 | 1045 | NtoA(p, blen-7, AF_INET6); |
1046 | else | |
1047 | NtoA(p, blen-7, AF_INET); | |
1048 | ||
1049 | // find the end of the new string | |
26ac0430 | 1050 | while (*p != '\0' && p < buf+blen) |
41d93087 | 1051 | p++; |
1052 | ||
26ac0430 | 1053 | if (IsIPv6() && p < (buf+blen-1) ) { |
41d93087 | 1054 | *p = ']'; |
1055 | p++; | |
1056 | } | |
1057 | ||
1058 | /* terminate just in case. */ | |
1059 | *p = '\0'; | |
1060 | ||
1061 | /* return size of buffer now used */ | |
1062 | return (p - buf); | |
1063 | } | |
1064 | ||
e1381638 AJ |
1065 | char* IpAddress::ToURL(char* buf, unsigned int blen) const |
1066 | { | |
41d93087 | 1067 | char *p = buf; |
1068 | ||
1069 | // Ensure we have a buffer. | |
1070 | ||
26ac0430 | 1071 | if (buf == NULL) { |
41d93087 | 1072 | return NULL; |
1073 | } | |
1074 | ||
1075 | p += ToHostname(p, blen); | |
1076 | ||
26ac0430 | 1077 | if (m_SocketAddr.sin6_port > 0 && p < (buf+blen-6) ) { |
41d93087 | 1078 | /* 6 is max length of expected ':port' (short int) */ |
1079 | snprintf(p, 6,":%d", GetPort() ); | |
1080 | } | |
1081 | ||
1082 | // force a null-terminated string | |
303bfd76 | 1083 | buf[blen-1] = '\0'; |
41d93087 | 1084 | |
1085 | return buf; | |
1086 | } | |
1087 | ||
e1381638 AJ |
1088 | void IpAddress::GetSockAddr(struct sockaddr_storage &addr, const int family) const |
1089 | { | |
52b694c2 AJ |
1090 | struct sockaddr_in *sin = NULL; |
1091 | ||
26ac0430 | 1092 | if ( family == AF_INET && !IsIPv4()) { |
0e1a47f0 | 1093 | // FIXME INET6: caller using the wrong socket type! |
565b233e | 1094 | debugs(14, DBG_CRITICAL, HERE << "IpAddress::GetSockAddr : Cannot convert non-IPv4 to IPv4. from " << *this); |
0e1a47f0 AJ |
1095 | assert(false); |
1096 | } | |
1097 | ||
1098 | #if USE_IPV6 | |
26ac0430 | 1099 | if ( family == AF_INET6 || (family == AF_UNSPEC && IsIPv6()) ) { |
1ef0b9ce AJ |
1100 | struct sockaddr_in6 *ss6 = (struct sockaddr_in6*)&addr; |
1101 | GetSockAddr(*ss6); | |
26ac0430 | 1102 | } else if ( family == AF_INET || (family == AF_UNSPEC && IsIPv4()) ) { |
52b694c2 | 1103 | sin = (struct sockaddr_in*)&addr; |
1ef0b9ce | 1104 | GetSockAddr(*sin); |
52b694c2 AJ |
1105 | } else { |
1106 | IASSERT("false",false); | |
0e1a47f0 | 1107 | } |
8c37ea44 | 1108 | #else /* not USE_IPV6 */ |
52b694c2 | 1109 | sin = (struct sockaddr_in*)&addr; |
1ef0b9ce | 1110 | GetSockAddr(*sin); |
8c37ea44 | 1111 | #endif /* USE_IPV6 */ |
0e1a47f0 AJ |
1112 | } |
1113 | ||
e1381638 AJ |
1114 | void IpAddress::GetSockAddr(struct sockaddr_in &buf) const |
1115 | { | |
41d93087 | 1116 | #if USE_IPV6 |
1117 | ||
26ac0430 | 1118 | if ( IsIPv4() ) { |
41d93087 | 1119 | buf.sin_family = AF_INET; |
1120 | buf.sin_port = m_SocketAddr.sin6_port; | |
1121 | Map6to4( m_SocketAddr.sin6_addr, buf.sin_addr); | |
26ac0430 | 1122 | } else { |
565b233e | 1123 | debugs(14, DBG_CRITICAL, HERE << "IpAddress::GetSockAddr : Cannot convert non-IPv4 to IPv4. from " << *this ); |
41d93087 | 1124 | |
1125 | memset(&buf,0xFFFFFFFF,sizeof(struct sockaddr_in)); | |
1126 | assert(false); | |
1127 | } | |
1128 | ||
1129 | #else | |
1130 | ||
1131 | memcpy(&buf, &m_SocketAddr, sizeof(struct sockaddr_in)); | |
1132 | ||
26ac0430 | 1133 | if (buf.sin_family == 0) { |
41d93087 | 1134 | buf.sin_family = AF_INET; |
1135 | } | |
1136 | ||
1137 | #endif | |
12f45551 AJ |
1138 | |
1139 | #if HAVE_SIN_LEN_IN_SAI | |
1140 | /* not all OS have this field, BUT when they do it can be a problem if set wrong */ | |
1ef0b9ce | 1141 | buf.sin_len = sizeof(struct sockaddr_in); |
12f45551 AJ |
1142 | #endif |
1143 | ||
41d93087 | 1144 | } |
1145 | ||
1146 | #if USE_IPV6 | |
1147 | ||
e1381638 AJ |
1148 | void IpAddress::GetSockAddr(struct sockaddr_in6 &buf) const |
1149 | { | |
41d93087 | 1150 | memcpy(&buf, &m_SocketAddr, sizeof(struct sockaddr_in6)); |
1151 | /* maintain address family. It may have changed inside us. */ | |
1152 | buf.sin6_family = AF_INET6; | |
12f45551 AJ |
1153 | |
1154 | #if HAVE_SIN6_LEN_IN_SAI | |
1155 | /* not all OS have this field, BUT when they do it can be a problem if set wrong */ | |
1ef0b9ce | 1156 | buf.sin6_len = sizeof(struct sockaddr_in6); |
12f45551 | 1157 | #endif |
41d93087 | 1158 | } |
1159 | ||
1160 | #endif | |
1161 | ||
1162 | #if USE_IPV6 | |
1163 | ||
e1381638 AJ |
1164 | void IpAddress::Map4to6(const struct in_addr &in, struct in6_addr &out) const |
1165 | { | |
41d93087 | 1166 | /* check for special cases */ |
1167 | ||
26ac0430 | 1168 | if ( in.s_addr == 0x00000000) { |
41d93087 | 1169 | /* ANYADDR */ |
1170 | ||
1171 | memset(&out, 0, sizeof(struct in6_addr)); | |
26ac0430 | 1172 | } else if ( in.s_addr == 0xFFFFFFFF) { |
41d93087 | 1173 | /* NOADDR */ |
1174 | ||
1175 | out.s6_addr32[0] = 0xFFFFFFFF; | |
1176 | out.s6_addr32[1] = 0xFFFFFFFF; | |
1177 | out.s6_addr32[2] = 0xFFFFFFFF; | |
1178 | out.s6_addr32[3] = 0xFFFFFFFF; | |
1179 | ||
26ac0430 | 1180 | } else { |
41d93087 | 1181 | /* general */ |
1182 | ||
1183 | memset(&out, 0, sizeof(struct in6_addr)); | |
1184 | out.s6_addr32[2] = htonl(0xFFFF); | |
1185 | out.s6_addr32[3] = in.s_addr; | |
1186 | } | |
1187 | } | |
1188 | ||
e1381638 AJ |
1189 | void IpAddress::Map6to4(const struct in6_addr &in, struct in_addr &out) const |
1190 | { | |
41d93087 | 1191 | /* ANYADDR */ |
1192 | /* NOADDR */ | |
1193 | /* general */ | |
1194 | ||
1195 | memset(&out, 0, sizeof(struct in_addr)); | |
1196 | out.s_addr = in.s6_addr32[3]; | |
41d93087 | 1197 | } |
1198 | ||
1199 | #endif | |
1200 | ||
1201 | #if USE_IPV6 | |
e1381638 AJ |
1202 | void IpAddress::GetInAddr(in6_addr &buf) const |
1203 | { | |
41d93087 | 1204 | memcpy(&buf, &m_SocketAddr.sin6_addr, sizeof(struct in6_addr)); |
1205 | } | |
1206 | ||
1207 | #endif | |
1208 | ||
e1381638 AJ |
1209 | bool IpAddress::GetInAddr(struct in_addr &buf) const |
1210 | { | |
41d93087 | 1211 | |
1212 | #if USE_IPV6 | |
26ac0430 | 1213 | if ( IsIPv4() ) { |
41d93087 | 1214 | Map6to4((const in6_addr)m_SocketAddr.sin6_addr, buf); |
1215 | return true; | |
1216 | } | |
1217 | #else | |
1218 | ||
26ac0430 | 1219 | if ( IsIPv4() ) { |
41d93087 | 1220 | memcpy(&buf, &m_SocketAddr.sin_addr, sizeof(struct in_addr)); |
1221 | return true; | |
1222 | } | |
1223 | #endif | |
1224 | ||
1225 | // default: | |
1226 | // non-compatible IPv6 Pure Address | |
1227 | ||
565b233e | 1228 | debugs(14,1, HERE << "IpAddress::GetInAddr : Cannot convert non-IPv4 to IPv4. IPA=" << *this); |
41d93087 | 1229 | memset(&buf,0xFFFFFFFF,sizeof(struct in_addr)); |
1230 | assert(false); | |
1231 | return false; | |
1232 | } |