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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" |
1ef0b9ce AJ |
39 | #include "util.h" |
40 | ||
41d93087 | 41 | |
42 | #if HAVE_ASSERT_H | |
43 | #include <assert.h> | |
44 | #endif | |
45 | #if HAVE_STDLIB_H | |
46 | #include <stdlib.h> | |
47 | #endif | |
48 | #if HAVE_STRING_H | |
49 | #include <string.h> | |
50 | #endif | |
51 | #if HAVE_ARPA_INET_H | |
52 | #include <arpa/inet.h> /* inet_ntoa() */ | |
53 | #endif | |
54 | ||
41d93087 | 55 | #ifdef INET6 |
56 | #error "INET6 defined but has been deprecated! Try running bootstrap and configure again." | |
57 | #endif | |
58 | ||
59 | /* We want to use the debug routines when running as module of squid. */ | |
60 | /* otherwise fallback to printf if those are not available. */ | |
61 | #ifndef SQUID_DEBUG | |
62 | # define debugs(a,b,c) // drop. | |
63 | #else | |
565b233e | 64 | #warning "IpAddress built with Debugs!!" |
41d93087 | 65 | # include "../src/Debug.h" |
66 | #endif | |
67 | ||
68 | #if !USE_IPV6 | |
69 | // So there are some places where I will drop to using Macros too. | |
70 | // At least I can restrict them to this file so they don't corrupt the app with C code. | |
71 | # define sin6_addr sin_addr | |
72 | # define sin6_port sin_port | |
73 | # define sin6_family sin_family | |
74 | #undef s6_addr | |
75 | # define s6_addr s_addr | |
76 | #endif | |
77 | ||
78 | static const unsigned int STRLEN_IP4A = 16; // aaa.bbb.ccc.ddd\0 | |
79 | static const unsigned int STRLEN_IP4R = 28; // ddd.ccc.bbb.aaa.in-addr.arpa.\0 | |
80 | static const unsigned int STRLEN_IP4S = 21; // ddd.ccc.bbb.aaa:ppppp\0 | |
81 | static const unsigned int MAX_IP4_STRLEN = STRLEN_IP4R; | |
82 | static const unsigned int STRLEN_IP6A = 42; // [ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff]/0 | |
83 | 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 | |
84 | static const unsigned int STRLEN_IP6S = 48; // [ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff]:00000/0 | |
85 | static const unsigned int MAX_IP6_STRLEN = STRLEN_IP6R; | |
86 | ||
87 | ||
88 | /* Debugging only. Dump the address content when a fatal assert is encountered. */ | |
89 | #if USE_IPV6 | |
90 | #define IASSERT(a,b) \ | |
68b313c2 | 91 | if(!(b)){ printf("assert \"%s\" at line %d\n", a, __LINE__); \ |
565b233e | 92 | printf("IpAddress invalid? with IsIPv4()=%c, IsIPv6()=%c\n",(IsIPv4()?'T':'F'),(IsIPv6()?'T':'F')); \ |
41d93087 | 93 | printf("ADDRESS:"); \ |
94 | for(unsigned int i = 0; i < sizeof(m_SocketAddr.sin6_addr); i++) { \ | |
95 | printf(" %x", m_SocketAddr.sin6_addr.s6_addr[i]); \ | |
96 | } printf("\n"); assert(b); \ | |
97 | } | |
98 | #else | |
99 | #define IASSERT(a,b) \ | |
68b313c2 | 100 | if(!(b)){ printf("assert \"%s\" at line %d\n", a, __LINE__); \ |
565b233e | 101 | printf("IpAddress invalid? with IsIPv4()=%c, IsIPv6()=%c\n",(IsIPv4()?'T':'F'),(IsIPv6()?'T':'F')); \ |
41d93087 | 102 | printf("ADDRESS: %x\n", (unsigned int)m_SocketAddr.sin_addr.s_addr); \ |
103 | assert(b); \ | |
104 | } | |
105 | #endif | |
106 | ||
23f6a720 | 107 | IpAddress::IpAddress() |
41d93087 | 108 | { |
109 | SetEmpty(); | |
110 | } | |
111 | ||
23f6a720 | 112 | IpAddress::~IpAddress() |
41d93087 | 113 | { |
565b233e | 114 | memset(this,0,sizeof(IpAddress)); |
41d93087 | 115 | } |
116 | ||
117 | int | |
565b233e | 118 | IpAddress::GetCIDR() const |
41d93087 | 119 | { |
120 | uint8_t shift,byte; | |
121 | uint8_t bit,caught; | |
122 | int len = 0; | |
123 | #if USE_IPV6 | |
df9617b9 | 124 | const uint8_t *ptr= m_SocketAddr.sin6_addr.s6_addr; |
41d93087 | 125 | #else |
df9617b9 | 126 | const uint8_t *ptr= (uint8_t *)&m_SocketAddr.sin_addr.s_addr; |
41d93087 | 127 | #endif |
128 | ||
129 | /* Let's scan all the bits from Most Significant to Least */ | |
130 | /* Until we find an "0" bit. Then, we return */ | |
131 | shift=0; | |
132 | ||
133 | #if USE_IPV6 | |
134 | /* return IPv4 CIDR for any Mapped address */ | |
135 | /* Thus only check the mapped bit */ | |
136 | ||
26ac0430 | 137 | if ( !IsIPv6() ) { |
41d93087 | 138 | shift = 12; |
139 | } | |
140 | ||
141 | #endif | |
142 | ||
143 | for (;shift<sizeof(m_SocketAddr.sin6_addr) ;shift++) { | |
144 | byte= *(ptr+shift); | |
145 | ||
146 | if (byte == 0xFF) { | |
147 | len += 8; | |
148 | continue ; /* A short-cut */ | |
149 | } | |
150 | ||
151 | for (caught = 0 , bit= 7 ; !caught && (bit <= 7); bit--) { | |
152 | caught = ((byte & 0x80) == 0x00); /* Found a '0' at 'bit' ? */ | |
153 | ||
154 | if (!caught) | |
155 | len++; | |
156 | ||
157 | byte <<= 1; | |
158 | } | |
159 | ||
160 | if (caught) | |
161 | break; /* We have found the most significant "0" bit. */ | |
162 | } | |
163 | ||
164 | return len; | |
165 | } | |
166 | ||
23f6a720 | 167 | const int IpAddress::ApplyMask(IpAddress const &mask_addr) |
41d93087 | 168 | { |
169 | uint32_t *p1 = (uint32_t*)(&m_SocketAddr.sin6_addr); | |
170 | uint32_t const *p2 = (uint32_t const *)(&mask_addr.m_SocketAddr.sin6_addr); | |
171 | unsigned int blen = sizeof(m_SocketAddr.sin6_addr)/sizeof(uint32_t); | |
172 | unsigned int changes = 0; | |
173 | ||
174 | for (unsigned int i = 0; i < blen; i++) { | |
26ac0430 | 175 | if ((p1[i] & p2[i]) != p1[i]) |
41d93087 | 176 | changes++; |
177 | ||
178 | p1[i] &= p2[i]; | |
179 | } | |
180 | ||
181 | /* we have found a situation where mask forms or destroys a IPv4 map. */ | |
182 | check4Mapped(); | |
183 | ||
184 | return changes; | |
185 | } | |
186 | ||
565b233e | 187 | bool IpAddress::ApplyMask(const unsigned int cidr, int mtype) |
41d93087 | 188 | { |
189 | uint8_t clearbits = 0; | |
190 | uint8_t* p = NULL; | |
191 | ||
192 | #if !USE_IPV6 | |
193 | IASSERT("mtype != AF_INET6", mtype != AF_INET6); /* using IPv6 in IPv4 is invalid. */ | |
194 | ||
26ac0430 | 195 | if (mtype == AF_UNSPEC) |
41d93087 | 196 | mtype = AF_INET; |
197 | ||
198 | #else | |
26ac0430 | 199 | if (mtype == AF_UNSPEC) |
41d93087 | 200 | mtype = AF_INET6; |
201 | ||
202 | #endif | |
203 | ||
204 | // validation and short-cuts. | |
205 | if (cidr > 128) | |
206 | return false; | |
207 | ||
208 | if (cidr > 32 && mtype == AF_INET) | |
209 | return false; | |
210 | ||
211 | clearbits = (uint8_t)( (mtype==AF_INET6?128:32) -cidr); | |
212 | ||
213 | // short-cut | |
26ac0430 | 214 | if (clearbits == 0) |
41d93087 | 215 | return true; |
216 | ||
217 | #if USE_IPV6 | |
218 | ||
219 | p = (uint8_t*)(&m_SocketAddr.sin6_addr) + 15; | |
220 | ||
221 | #else | |
222 | ||
223 | p = (uint8_t*)(&m_SocketAddr.sin_addr) + 3; | |
224 | ||
225 | #endif | |
226 | ||
227 | for (; clearbits>0 && p >= (uint8_t*)&m_SocketAddr.sin6_addr ; p-- ) { | |
26ac0430 | 228 | if (clearbits < 8) { |
41d93087 | 229 | *p &= ((0xFF << clearbits) & 0xFF); |
230 | clearbits = 0; | |
231 | } else { | |
232 | *p &= 0x00; | |
233 | clearbits -= 8; | |
234 | } | |
235 | } | |
236 | ||
237 | return true; | |
238 | } | |
239 | ||
565b233e | 240 | bool IpAddress::IsSockAddr() const |
41d93087 | 241 | { |
242 | return (m_SocketAddr.sin6_port != 0); | |
243 | } | |
244 | ||
565b233e | 245 | bool IpAddress::IsIPv4() const |
41d93087 | 246 | { |
247 | #if USE_IPV6 | |
248 | ||
249 | return IsAnyAddr() || IsNoAddr() || | |
41d93087 | 250 | ( m_SocketAddr.sin6_addr.s6_addr32[0] == htonl(0x00000000) && |
251 | m_SocketAddr.sin6_addr.s6_addr32[1] == htonl(0x00000000) && | |
252 | m_SocketAddr.sin6_addr.s6_addr32[2] == htonl(0x0000FFFF) | |
253 | ); | |
254 | ||
255 | #else | |
256 | return true; // enforce IPv4 in IPv4-only mode. | |
257 | #endif | |
258 | } | |
259 | ||
565b233e | 260 | bool IpAddress::IsIPv6() const |
41d93087 | 261 | { |
262 | #if USE_IPV6 | |
263 | ||
264 | return IsAnyAddr() || IsNoAddr() || | |
41d93087 | 265 | !( m_SocketAddr.sin6_addr.s6_addr32[0] == htonl(0x00000000) && |
266 | m_SocketAddr.sin6_addr.s6_addr32[1] == htonl(0x00000000) && | |
267 | m_SocketAddr.sin6_addr.s6_addr32[2] == htonl(0x0000FFFF) | |
26ac0430 | 268 | ); |
41d93087 | 269 | #else |
270 | return false; // enforce IPv4 in IPv4-only mode. | |
271 | #endif | |
272 | } | |
273 | ||
565b233e | 274 | bool IpAddress::IsAnyAddr() const |
41d93087 | 275 | { |
276 | #if USE_IPV6 | |
277 | return m_SocketAddr.sin6_addr.s6_addr32[0] == 0 | |
278 | && m_SocketAddr.sin6_addr.s6_addr32[1] == 0 | |
279 | && m_SocketAddr.sin6_addr.s6_addr32[2] == 0 | |
280 | && m_SocketAddr.sin6_addr.s6_addr32[3] == 0 | |
281 | ; | |
282 | #else | |
283 | ||
284 | return (INADDR_ANY == m_SocketAddr.sin_addr.s_addr); | |
285 | #endif | |
286 | } | |
287 | ||
288 | /// NOTE: Does NOT clear the Port stored. Ony the Address and Type. | |
565b233e | 289 | void IpAddress::SetAnyAddr() |
41d93087 | 290 | { |
291 | #if USE_IPV6 | |
292 | memset(&m_SocketAddr.sin6_addr, 0, sizeof(struct in6_addr) ); | |
293 | #else | |
294 | memset(&m_SocketAddr.sin_addr, 0, sizeof(struct in_addr) ); | |
295 | #endif | |
296 | } | |
297 | ||
565b233e AJ |
298 | /// NOTE: completely empties the IpAddress structure. Address, Port, Type, everything. |
299 | void IpAddress::SetEmpty() | |
41d93087 | 300 | { |
301 | memset(&m_SocketAddr, 0, sizeof(m_SocketAddr) ); | |
302 | } | |
303 | ||
565b233e | 304 | bool IpAddress::SetIPv4() |
41d93087 | 305 | { |
306 | #if USE_IPV6 | |
307 | ||
26ac0430 | 308 | if ( IsLocalhost() ) { |
41d93087 | 309 | m_SocketAddr.sin6_addr.s6_addr32[2] = htonl(0xffff); |
310 | m_SocketAddr.sin6_addr.s6_addr32[3] = htonl(0x7F000001); | |
311 | return true; | |
312 | } | |
41d93087 | 313 | |
26ac0430 | 314 | if ( IsAnyAddr() ) { |
41d93087 | 315 | m_SocketAddr.sin6_addr.s6_addr32[2] = htonl(0xffff); |
316 | return true; | |
317 | } | |
318 | ||
26ac0430 | 319 | if ( IsIPv4()) |
41d93087 | 320 | return true; |
321 | ||
322 | // anything non-IPv4 and non-convertable is BAD. | |
323 | return false; | |
324 | #else | |
325 | return true; // Always IPv4 in IPv4-only builds. | |
326 | #endif | |
327 | } | |
328 | ||
565b233e | 329 | bool IpAddress::IsLocalhost() const |
41d93087 | 330 | { |
331 | #if USE_IPV6 | |
f8f9eafb | 332 | return ( m_SocketAddr.sin6_addr.s6_addr32[0] == 0 |
26ac0430 AJ |
333 | && m_SocketAddr.sin6_addr.s6_addr32[1] == 0 |
334 | && m_SocketAddr.sin6_addr.s6_addr32[2] == 0 | |
335 | && m_SocketAddr.sin6_addr.s6_addr32[3] == htonl(0x1) | |
f8f9eafb | 336 | ) |
26ac0430 | 337 | || |
f8f9eafb | 338 | ( m_SocketAddr.sin6_addr.s6_addr32[0] == 0 |
26ac0430 AJ |
339 | && m_SocketAddr.sin6_addr.s6_addr32[1] == 0 |
340 | && m_SocketAddr.sin6_addr.s6_addr32[2] == htonl(0xffff) | |
341 | && m_SocketAddr.sin6_addr.s6_addr32[3] == htonl(0x7F000001) | |
a5aa3fbc | 342 | ); |
41d93087 | 343 | #else |
344 | ||
345 | return (htonl(0x7F000001) == m_SocketAddr.sin_addr.s_addr); | |
346 | #endif | |
347 | } | |
348 | ||
565b233e | 349 | void IpAddress::SetLocalhost() |
41d93087 | 350 | { |
351 | #if USE_IPV6 | |
352 | SetAnyAddr(); | |
353 | m_SocketAddr.sin6_addr.s6_addr[15] = 0x1; | |
354 | m_SocketAddr.sin6_family = AF_INET6; | |
355 | ||
356 | #else | |
357 | m_SocketAddr.sin_addr.s_addr = htonl(0x7F000001); | |
358 | m_SocketAddr.sin_family = AF_INET; | |
359 | #endif | |
360 | } | |
361 | ||
565b233e | 362 | bool IpAddress::IsNoAddr() const |
41d93087 | 363 | { |
364 | // IFF the address == 0xff..ff (all ones) | |
365 | #if USE_IPV6 | |
366 | return m_SocketAddr.sin6_addr.s6_addr32[0] == 0xFFFFFFFF | |
367 | && m_SocketAddr.sin6_addr.s6_addr32[1] == 0xFFFFFFFF | |
368 | && m_SocketAddr.sin6_addr.s6_addr32[2] == 0xFFFFFFFF | |
369 | && m_SocketAddr.sin6_addr.s6_addr32[3] == 0xFFFFFFFF | |
370 | ; | |
371 | #else | |
372 | ||
373 | return 0xFFFFFFFF == m_SocketAddr.sin_addr.s_addr; | |
374 | #endif | |
375 | } | |
376 | ||
565b233e | 377 | void IpAddress::SetNoAddr() |
41d93087 | 378 | { |
379 | #if USE_IPV6 | |
380 | memset(&m_SocketAddr.sin6_addr, 0xFFFFFFFF, sizeof(struct in6_addr) ); | |
381 | m_SocketAddr.sin6_family = AF_INET6; | |
382 | #else | |
383 | memset(&m_SocketAddr.sin_addr, 0xFFFFFFFF, sizeof(struct in_addr) ); | |
384 | m_SocketAddr.sin_family = AF_INET; | |
385 | #endif | |
386 | } | |
387 | ||
388 | #if USE_IPV6 | |
389 | ||
565b233e | 390 | bool IpAddress::GetReverseString6(char buf[MAX_IPSTRLEN], const struct in6_addr &dat) const |
41d93087 | 391 | { |
392 | char *p = buf; | |
393 | unsigned char const *r = dat.s6_addr; | |
394 | ||
395 | /* RFC1886 says: */ | |
396 | /* 4321:0:1:2:3:4:567:89ab */ | |
397 | /* must be sent */ | |
398 | /* 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. */ | |
399 | ||
400 | /* Work from the binary field. Anything else may have representation changes. */ | |
401 | /* The sin6_port and sin6_addr members shall be in network byte order. */ | |
402 | ||
403 | /* Compile Err: 'Too many arguments for format. */ | |
404 | ||
26ac0430 | 405 | for (int i = 15; i >= 0; i--, p+=4) { |
41d93087 | 406 | snprintf(p, 5, "%x.%x.", ((r[i])&0xf), (((r[i])>>4)&0xf) ); |
407 | } | |
408 | ||
409 | /* RFC3152 says: */ | |
410 | /* ip6.int is now deprecated TLD, use ip6.arpa instead. */ | |
411 | snprintf(p,10,"ip6.arpa."); | |
412 | ||
413 | return true; | |
414 | } | |
415 | ||
416 | #endif | |
417 | ||
565b233e | 418 | bool IpAddress::GetReverseString4(char buf[MAX_IPSTRLEN], const struct in_addr &dat) const |
41d93087 | 419 | { |
420 | unsigned int i = (unsigned int) ntohl(dat.s_addr); | |
421 | snprintf(buf, 32, "%u.%u.%u.%u.in-addr.arpa.", | |
422 | i & 255, | |
423 | (i >> 8) & 255, | |
424 | (i >> 16) & 255, | |
425 | (i >> 24) & 255); | |
426 | return true; | |
427 | } | |
428 | ||
565b233e | 429 | bool IpAddress::GetReverseString(char buf[MAX_IPSTRLEN], int show_type) const |
41d93087 | 430 | { |
431 | ||
26ac0430 | 432 | if (show_type == AF_UNSPEC) { |
41d93087 | 433 | #if USE_IPV6 |
434 | show_type = IsIPv6() ? AF_INET6 : AF_INET ; | |
435 | #else | |
436 | show_type = AF_INET; | |
437 | #endif | |
438 | } | |
439 | ||
440 | if (show_type == AF_INET && IsIPv4()) { | |
441 | #if USE_IPV6 | |
442 | ||
443 | return GetReverseString4(buf, *(struct in_addr*)&m_SocketAddr.sin6_addr.s6_addr32[3] ); | |
444 | } else if ( show_type == AF_INET6 && IsIPv6() ) { | |
445 | return GetReverseString6(buf, m_SocketAddr.sin6_addr); | |
446 | #else | |
447 | return GetReverseString4(buf, m_SocketAddr.sin_addr); | |
448 | #endif | |
449 | } | |
450 | ||
451 | debugs(14,0, "Unable to convert '" << NtoA(buf,MAX_IPSTRLEN) << "' to the rDNS type requested."); | |
452 | ||
453 | buf[0] = '\0'; | |
454 | ||
455 | return false; | |
456 | } | |
457 | ||
9fb4efad | 458 | IpAddress& IpAddress::operator =(const IpAddress &s) |
41d93087 | 459 | { |
565b233e | 460 | memcpy(this, &s, sizeof(IpAddress)); |
41d93087 | 461 | return *this; |
462 | }; | |
463 | ||
23f6a720 | 464 | IpAddress::IpAddress(const char*s) |
41d93087 | 465 | { |
466 | SetEmpty(); | |
467 | operator=(s); | |
468 | } | |
469 | ||
565b233e | 470 | bool IpAddress::operator =(const char* s) |
41d93087 | 471 | { |
472 | return LookupHostIP(s, true); | |
473 | } | |
474 | ||
565b233e | 475 | bool IpAddress::GetHostByName(const char* s) |
41d93087 | 476 | { |
477 | return LookupHostIP(s, false); | |
478 | } | |
479 | ||
565b233e | 480 | bool IpAddress::LookupHostIP(const char *s, bool nodns) |
41d93087 | 481 | { |
482 | int err = 0; | |
483 | ||
484 | short port = 0; | |
485 | ||
486 | struct addrinfo *res = NULL; | |
487 | ||
488 | struct addrinfo want; | |
489 | ||
490 | memset(&want, 0, sizeof(struct addrinfo)); | |
26ac0430 | 491 | if (nodns) { |
41d93087 | 492 | want.ai_flags = AI_NUMERICHOST; // prevent actual DNS lookups! |
493 | } | |
494 | #if !USE_IPV6 | |
495 | want.ai_family = AF_INET; | |
496 | #endif | |
497 | ||
498 | if ( (err = xgetaddrinfo(s, NULL, &want, &res)) != 0) { | |
499 | debugs(14,1, HERE << "Given Bad IP '" << s << "': " << xgai_strerror(err) ); | |
500 | /* free the memory xgetaddrinfo() dynamically allocated. */ | |
26ac0430 | 501 | if (res) { |
41d93087 | 502 | xfreeaddrinfo(res); |
503 | res = NULL; | |
504 | } | |
505 | return false; | |
506 | } | |
507 | ||
508 | /* | |
509 | * NP: =(sockaddr_*) may alter the port. we don't want that. | |
510 | * all we have been given as input was an IPA. | |
511 | */ | |
512 | port = GetPort(); | |
513 | operator=(*res); | |
514 | SetPort(port); | |
515 | ||
516 | /* free the memory xgetaddrinfo() dynamically allocated. */ | |
517 | xfreeaddrinfo(res); | |
518 | ||
519 | res = NULL; | |
520 | ||
521 | return true; | |
522 | } | |
523 | ||
23f6a720 | 524 | IpAddress::IpAddress(struct sockaddr_in const &s) |
41d93087 | 525 | { |
526 | SetEmpty(); | |
527 | operator=(s); | |
528 | }; | |
529 | ||
23f6a720 | 530 | IpAddress& IpAddress::operator =(struct sockaddr_in const &s) |
41d93087 | 531 | { |
532 | #if USE_IPV6 | |
533 | Map4to6((const in_addr)s.sin_addr, m_SocketAddr.sin6_addr); | |
534 | m_SocketAddr.sin6_port = s.sin_port; | |
535 | m_SocketAddr.sin6_family = AF_INET6; | |
536 | #else | |
537 | ||
538 | memcpy(&m_SocketAddr, &s, sizeof(struct sockaddr_in)); | |
539 | #endif | |
540 | ||
541 | /* maintain stored family values properly */ | |
542 | check4Mapped(); | |
543 | ||
544 | return *this; | |
545 | }; | |
546 | ||
23f6a720 | 547 | IpAddress& IpAddress::operator =(const struct sockaddr_storage &s) |
0e1a47f0 AJ |
548 | { |
549 | #if USE_IPV6 | |
550 | /* some AF_* magic to tell socket types apart and what we need to do */ | |
26ac0430 | 551 | if (s.ss_family == AF_INET6) { |
0e1a47f0 | 552 | memcpy(&m_SocketAddr, &s, sizeof(struct sockaddr_in)); |
26ac0430 | 553 | } else { // convert it to our storage mapping. |
0e1a47f0 AJ |
554 | struct sockaddr_in *sin = (struct sockaddr_in*)&s; |
555 | m_SocketAddr.sin6_port = sin->sin_port; | |
556 | Map4to6( sin->sin_addr, m_SocketAddr.sin6_addr); | |
557 | } | |
558 | #else | |
559 | memcpy(&m_SocketAddr, &s, sizeof(struct sockaddr_in)); | |
560 | #endif | |
561 | return *this; | |
562 | }; | |
563 | ||
565b233e | 564 | void IpAddress::check4Mapped() |
41d93087 | 565 | { |
26ac0430 | 566 | // obsolete. |
41d93087 | 567 | // TODO use this NOW to set the sin6_family properly on exporting. not on import. |
568 | } | |
569 | ||
570 | #if USE_IPV6 | |
23f6a720 | 571 | IpAddress::IpAddress(struct sockaddr_in6 const &s) |
41d93087 | 572 | { |
573 | SetEmpty(); | |
574 | operator=(s); | |
575 | }; | |
576 | ||
23f6a720 | 577 | IpAddress& IpAddress::operator =(struct sockaddr_in6 const &s) |
41d93087 | 578 | { |
579 | memcpy(&m_SocketAddr, &s, sizeof(struct sockaddr_in6)); | |
580 | ||
581 | /* maintain address family properly */ | |
582 | check4Mapped(); | |
583 | return *this; | |
584 | }; | |
585 | ||
586 | #endif | |
587 | ||
23f6a720 | 588 | IpAddress::IpAddress(struct in_addr const &s) |
41d93087 | 589 | { |
590 | SetEmpty(); | |
591 | operator=(s); | |
592 | }; | |
593 | ||
23f6a720 | 594 | IpAddress& IpAddress::operator =(struct in_addr const &s) |
41d93087 | 595 | { |
596 | #if USE_IPV6 | |
597 | Map4to6((const in_addr)s, m_SocketAddr.sin6_addr); | |
598 | m_SocketAddr.sin6_family = AF_INET6; | |
599 | ||
600 | #else | |
601 | ||
602 | memcpy(&m_SocketAddr.sin_addr, &s, sizeof(struct in_addr)); | |
603 | ||
604 | #endif | |
605 | ||
606 | /* maintain stored family type properly */ | |
607 | check4Mapped(); | |
608 | ||
609 | return *this; | |
610 | }; | |
611 | ||
612 | #if USE_IPV6 | |
613 | ||
23f6a720 | 614 | IpAddress::IpAddress(struct in6_addr const &s) |
41d93087 | 615 | { |
616 | SetEmpty(); | |
617 | operator=(s); | |
618 | }; | |
619 | ||
23f6a720 | 620 | IpAddress& IpAddress::operator =(struct in6_addr const &s) |
41d93087 | 621 | { |
622 | ||
623 | memcpy(&m_SocketAddr.sin6_addr, &s, sizeof(struct in6_addr)); | |
624 | m_SocketAddr.sin6_family = AF_INET6; | |
625 | ||
626 | /* maintain address family type properly */ | |
627 | check4Mapped(); | |
628 | ||
629 | return *this; | |
630 | }; | |
631 | ||
632 | #endif | |
633 | ||
9fb4efad | 634 | IpAddress::IpAddress(const IpAddress &s) |
41d93087 | 635 | { |
636 | SetEmpty(); | |
637 | operator=(s); | |
638 | } | |
639 | ||
9fb4efad | 640 | IpAddress::IpAddress(IpAddress *s) |
41d93087 | 641 | { |
642 | SetEmpty(); | |
643 | operator=(s); | |
644 | } | |
645 | ||
9fb4efad | 646 | IpAddress& IpAddress::operator =(IpAddress *s) |
41d93087 | 647 | { |
565b233e | 648 | IpAddress *tmp = NULL; |
26ac0430 | 649 | if (!s) return *this; |
565b233e | 650 | tmp = dynamic_cast<IpAddress*>(s); |
26ac0430 | 651 | if (!tmp) return *this; |
41d93087 | 652 | return operator=(*tmp); |
653 | } | |
654 | ||
23f6a720 | 655 | IpAddress::IpAddress(const struct hostent &s) |
41d93087 | 656 | { |
657 | SetEmpty(); | |
658 | operator=(s); | |
659 | } | |
660 | ||
565b233e | 661 | bool IpAddress::operator =(const struct hostent &s) |
41d93087 | 662 | { |
663 | ||
664 | struct in_addr* ipv4 = NULL; | |
665 | ||
666 | struct in6_addr* ipv6 = NULL; | |
667 | ||
668 | //struct hostent { | |
669 | // char *h_name; /* official name of host */ | |
670 | // char **h_aliases; /* alias list */ | |
671 | // int h_addrtype; /* host address type */ | |
672 | // int h_length; /* length of address */ | |
673 | // char **h_addr_list; /* list of addresses */ | |
674 | //} | |
675 | ||
26ac0430 | 676 | switch (s.h_addrtype) { |
41d93087 | 677 | |
678 | case AF_INET: | |
679 | ipv4 = (in_addr*)(s.h_addr_list[0]); | |
680 | /* this */ | |
681 | operator=(*ipv4); | |
682 | break; | |
683 | ||
684 | case AF_INET6: | |
685 | ipv6 = (in6_addr*)(s.h_addr_list[0]); | |
686 | #if USE_IPV6 | |
687 | /* this */ | |
688 | operator=(*ipv6); | |
689 | #else | |
690 | ||
691 | debugs(14,1, HERE << "Discarded IPv6 Address. Protocol disabled."); | |
692 | ||
693 | // FIXME see if there is another address in the list that might be usable ?? | |
694 | return false; | |
695 | #endif | |
696 | ||
697 | break; | |
698 | ||
699 | default: | |
26ac0430 AJ |
700 | IASSERT("false",false); |
701 | return false; | |
41d93087 | 702 | } |
703 | ||
704 | return true; | |
705 | } | |
706 | ||
23f6a720 | 707 | IpAddress::IpAddress(const struct addrinfo &s) |
41d93087 | 708 | { |
709 | SetEmpty(); | |
710 | operator=(s); | |
711 | } | |
712 | ||
565b233e | 713 | bool IpAddress::operator =(const struct addrinfo &s) |
41d93087 | 714 | { |
715 | ||
716 | struct sockaddr_in* ipv4 = NULL; | |
717 | ||
718 | struct sockaddr_in6* ipv6 = NULL; | |
719 | ||
720 | //struct addrinfo { | |
721 | // int ai_flags; /* input flags */ | |
722 | // int ai_family; /* protocol family for socket */ | |
723 | // int ai_socktype; /* socket type */ | |
724 | // int ai_protocol; /* protocol for socket */ | |
725 | // socklen_t ai_addrlen; /* length of socket-address */ | |
726 | // struct sockaddr *ai_addr; /* socket-address for socket */ | |
727 | // char *ai_canonname; /* canonical name for service location */ | |
728 | // struct addrinfo *ai_next; /* pointer to next in list */ | |
729 | //} | |
730 | ||
26ac0430 | 731 | switch (s.ai_family) { |
41d93087 | 732 | |
733 | case AF_INET: | |
734 | ipv4 = (sockaddr_in*)(s.ai_addr); | |
735 | /* this */ | |
736 | assert(ipv4); | |
737 | operator=(*ipv4); | |
738 | break; | |
739 | ||
740 | case AF_INET6: | |
741 | ipv6 = (sockaddr_in6*)(s.ai_addr); | |
742 | #if USE_IPV6 | |
743 | /* this */ | |
744 | assert(ipv6); | |
745 | operator=(*ipv6); | |
746 | #else | |
747 | ||
748 | debugs(14,1, HERE << "Discarded IPv6 Address. Protocol disabled."); | |
749 | ||
750 | // see if there is another address in the list that might be usable ?? | |
751 | ||
752 | if (s.ai_next) | |
753 | return operator=(*s.ai_next); | |
754 | else | |
755 | return false; | |
756 | ||
757 | #endif | |
758 | break; | |
759 | ||
760 | case AF_UNSPEC: | |
761 | default: | |
762 | // attempt to handle partially initialised addrinfo. | |
763 | // such as those where data only comes from getsockopt() | |
26ac0430 | 764 | if (s.ai_addr != NULL) { |
41d93087 | 765 | #if USE_IPV6 |
26ac0430 | 766 | if (s.ai_addrlen == sizeof(struct sockaddr_in6)) { |
41d93087 | 767 | operator=(*((struct sockaddr_in6*)s.ai_addr)); |
768 | return true; | |
26ac0430 | 769 | } else |
41d93087 | 770 | #endif |
26ac0430 AJ |
771 | if (s.ai_addrlen == sizeof(struct sockaddr_in)) { |
772 | operator=(*((struct sockaddr_in*)s.ai_addr)); | |
773 | return true; | |
774 | } | |
41d93087 | 775 | } |
776 | return false; | |
777 | } | |
778 | ||
779 | return true; | |
780 | } | |
781 | ||
565b233e | 782 | void IpAddress::GetAddrInfo(struct addrinfo *&dst, int force) const |
41d93087 | 783 | { |
26ac0430 | 784 | if (dst == NULL) { |
41d93087 | 785 | dst = new addrinfo; |
786 | } | |
787 | ||
788 | memset(dst, 0, sizeof(struct addrinfo)); | |
789 | ||
790 | // set defaults | |
791 | dst->ai_flags = AI_NUMERICHOST; | |
792 | ||
26ac0430 | 793 | if (dst->ai_socktype == 0) |
41d93087 | 794 | dst->ai_socktype = SOCK_STREAM; |
795 | ||
26ac0430 | 796 | if (dst->ai_socktype == SOCK_STREAM // implies TCP |
41d93087 | 797 | && dst->ai_protocol == 0) |
798 | dst->ai_protocol = IPPROTO_TCP; | |
799 | ||
26ac0430 | 800 | if (dst->ai_socktype == SOCK_DGRAM // implies UDP |
41d93087 | 801 | && dst->ai_protocol == 0) |
802 | dst->ai_protocol = IPPROTO_UDP; | |
803 | ||
804 | #if USE_IPV6 | |
26ac0430 | 805 | if ( force == AF_INET6 || (force == AF_UNSPEC && IsIPv6()) ) { |
41d93087 | 806 | dst->ai_addr = (struct sockaddr*)new sockaddr_in6; |
807 | ||
808 | memset(dst->ai_addr,0,sizeof(struct sockaddr_in6)); | |
809 | ||
810 | GetSockAddr(*((struct sockaddr_in6*)dst->ai_addr)); | |
811 | ||
812 | dst->ai_addrlen = sizeof(struct sockaddr_in6); | |
813 | ||
814 | dst->ai_family = ((struct sockaddr_in6*)dst->ai_addr)->sin6_family; | |
9d92af86 AJ |
815 | |
816 | #if 0 | |
817 | /** | |
818 | * Enable only if you must and please report to squid-dev if you find a need for this. | |
819 | * | |
820 | * Vista may need this to cope with dual-stack (unsetting IP6_V6ONLY). | |
821 | * http://msdn.microsoft.com/en-us/library/ms738574(VS.85).aspx | |
822 | * Linux appears to only do some things when its present. | |
823 | * (93) Bad Protocol | |
824 | * FreeBSD dies horribly when using dual-stack with it set. | |
825 | * (43) Protocol not supported | |
826 | */ | |
41d93087 | 827 | dst->ai_protocol = IPPROTO_IPV6; |
9d92af86 AJ |
828 | #endif |
829 | ||
41d93087 | 830 | } else |
831 | #endif | |
26ac0430 | 832 | if ( force == AF_INET || (force == AF_UNSPEC && IsIPv4()) ) { |
41d93087 | 833 | |
834 | dst->ai_addr = (struct sockaddr*)new sockaddr_in; | |
835 | ||
836 | memset(dst->ai_addr,0,sizeof(struct sockaddr_in)); | |
837 | ||
838 | GetSockAddr(*((struct sockaddr_in*)dst->ai_addr)); | |
839 | ||
840 | dst->ai_addrlen = sizeof(struct sockaddr_in); | |
841 | ||
842 | dst->ai_family = ((struct sockaddr_in*)dst->ai_addr)->sin_family; | |
26ac0430 | 843 | } else { |
41d93087 | 844 | IASSERT("false",false); |
845 | } | |
846 | } | |
847 | ||
565b233e | 848 | void IpAddress::InitAddrInfo(struct addrinfo *&ai) const |
41d93087 | 849 | { |
26ac0430 | 850 | if (ai == NULL) { |
41d93087 | 851 | ai = new addrinfo; |
852 | memset(ai,0,sizeof(struct addrinfo)); | |
853 | } | |
854 | ||
855 | // remove any existing data. | |
26ac0430 | 856 | if (ai->ai_addr) delete ai->ai_addr; |
41d93087 | 857 | |
858 | ai->ai_addr = (struct sockaddr*)new sockaddr_in6; | |
859 | memset(ai->ai_addr, 0, sizeof(struct sockaddr_in6)); | |
860 | ||
861 | ai->ai_addrlen = sizeof(struct sockaddr_in6); | |
862 | ||
863 | } | |
864 | ||
565b233e | 865 | void IpAddress::FreeAddrInfo(struct addrinfo *&ai) const |
41d93087 | 866 | { |
26ac0430 | 867 | if (ai == NULL) return; |
41d93087 | 868 | |
26ac0430 | 869 | if (ai->ai_addr) delete ai->ai_addr; |
41d93087 | 870 | |
871 | ai->ai_addr = NULL; | |
872 | ||
873 | ai->ai_addrlen = 0; | |
874 | ||
875 | // NP: name fields are NOT allocated at present. | |
876 | delete ai; | |
877 | ||
878 | ai = NULL; | |
879 | } | |
880 | ||
23f6a720 | 881 | int IpAddress::matchIPAddr(const IpAddress &rhs) const |
41d93087 | 882 | { |
883 | #if USE_IPV6 | |
884 | uint8_t *l = (uint8_t*)m_SocketAddr.sin6_addr.s6_addr; | |
885 | uint8_t *r = (uint8_t*)rhs.m_SocketAddr.sin6_addr.s6_addr; | |
886 | #else | |
887 | uint8_t *l = (uint8_t*)&m_SocketAddr.sin_addr.s_addr; | |
888 | uint8_t *r = (uint8_t*)&rhs.m_SocketAddr.sin_addr.s_addr; | |
889 | #endif | |
890 | ||
891 | // loop a byte-wise compare | |
892 | // NP: match MUST be R-to-L : L-to-R produces inconsistent gt/lt results at varying CIDR | |
893 | // expected difference on CIDR is gt/eq or lt/eq ONLY. | |
26ac0430 | 894 | for (unsigned int i = 0 ; i < sizeof(m_SocketAddr.sin6_addr) ; i++) { |
41d93087 | 895 | |
26ac0430 | 896 | if (l[i] < r[i]) |
41d93087 | 897 | return -1; |
898 | ||
26ac0430 | 899 | if (l[i] > r[i]) |
41d93087 | 900 | return 1; |
901 | } | |
902 | ||
903 | return 0; | |
904 | } | |
905 | ||
23f6a720 | 906 | bool IpAddress::operator ==(const IpAddress &s) const |
41d93087 | 907 | { |
908 | return (0 == matchIPAddr(s)); | |
909 | } | |
910 | ||
23f6a720 | 911 | bool IpAddress::operator !=(const IpAddress &s) const |
41d93087 | 912 | { |
913 | return ! ( operator==(s) ); | |
914 | } | |
915 | ||
23f6a720 | 916 | bool IpAddress::operator <=(const IpAddress &rhs) const |
41d93087 | 917 | { |
26ac0430 | 918 | if (IsAnyAddr() && !rhs.IsAnyAddr()) |
41d93087 | 919 | return true; |
920 | ||
921 | return (matchIPAddr(rhs) <= 0); | |
922 | } | |
923 | ||
23f6a720 | 924 | bool IpAddress::operator >=(const IpAddress &rhs) const |
41d93087 | 925 | { |
26ac0430 | 926 | if (IsNoAddr() && !rhs.IsNoAddr()) |
41d93087 | 927 | return true; |
928 | ||
929 | return ( matchIPAddr(rhs) >= 0); | |
930 | } | |
931 | ||
23f6a720 | 932 | bool IpAddress::operator >(const IpAddress &rhs) const |
41d93087 | 933 | { |
26ac0430 | 934 | if (IsNoAddr() && !rhs.IsNoAddr()) |
41d93087 | 935 | return true; |
936 | ||
937 | return ( matchIPAddr(rhs) > 0); | |
938 | } | |
939 | ||
23f6a720 | 940 | bool IpAddress::operator <(const IpAddress &rhs) const |
41d93087 | 941 | { |
26ac0430 | 942 | if (IsNoAddr() && !rhs.IsNoAddr()) |
41d93087 | 943 | return true; |
944 | ||
945 | return ( matchIPAddr(rhs) < 0); | |
946 | } | |
947 | ||
565b233e | 948 | u_short IpAddress::GetPort() const |
41d93087 | 949 | { |
950 | return ntohs( m_SocketAddr.sin6_port ); | |
951 | } | |
952 | ||
565b233e | 953 | u_short IpAddress::SetPort(u_short prt) |
41d93087 | 954 | { |
955 | m_SocketAddr.sin6_port = htons(prt); | |
956 | ||
957 | return prt; | |
958 | } | |
959 | ||
960 | /** | |
961 | * NtoA Given a buffer writes a readable ascii version of the IPA and/or port stored | |
962 | * | |
963 | * Buffer must be of a size large enough to hold the converted address. | |
964 | * This size is provided in the form of a global defined variable MAX_IPSTRLEN | |
965 | * Should a buffer shorter be provided the string result will be truncated | |
966 | * at the length of the available buffer. | |
967 | * | |
968 | * A copy of the buffer is also returned for simple immediate display. | |
969 | */ | |
565b233e | 970 | char* IpAddress::NtoA(char* buf, const unsigned int blen, int force) const |
41d93087 | 971 | { |
972 | // Ensure we have a buffer. | |
26ac0430 | 973 | if (buf == NULL) { |
41d93087 | 974 | return NULL; |
975 | } | |
976 | ||
977 | /* some external code may have blindly memset a parent. */ | |
978 | /* thats okay, our default is known */ | |
26ac0430 | 979 | if ( IsAnyAddr() ) { |
41d93087 | 980 | #if USE_IPV6 |
d85c3078 | 981 | memcpy(buf,"::\0", min((const unsigned int)3,blen)); |
41d93087 | 982 | #else |
d85c3078 | 983 | memcpy(buf,"0.0.0.0\0", min((const unsigned int)8,blen)); |
41d93087 | 984 | #endif |
985 | return buf; | |
986 | } | |
987 | ||
988 | memset(buf,0,blen); // clear buffer before write | |
989 | ||
990 | /* Pure-IPv6 CANNOT be displayed in IPv4 format. */ | |
991 | /* However IPv4 CAN. */ | |
26ac0430 AJ |
992 | if ( force == AF_INET && !IsIPv4() ) { |
993 | if ( IsIPv6() ) { | |
d85c3078 | 994 | memcpy(buf, "{!IPv4}\0", min((const unsigned int)8,blen)); |
41d93087 | 995 | } |
996 | return buf; | |
997 | } | |
998 | ||
999 | #if USE_IPV6 | |
26ac0430 | 1000 | if ( force == AF_INET6 || (force == AF_UNSPEC && IsIPv6()) ) { |
41d93087 | 1001 | |
1002 | xinet_ntop(AF_INET6, &m_SocketAddr.sin6_addr, buf, blen); | |
1003 | ||
1004 | } else if ( force == AF_INET || (force == AF_UNSPEC && IsIPv4()) ) { | |
1005 | ||
1006 | struct in_addr tmp; | |
1007 | GetInAddr(tmp); | |
1008 | xinet_ntop(AF_INET, &tmp, buf, blen); | |
1009 | #else | |
26ac0430 | 1010 | if ( force == AF_UNSPEC || (force == AF_INET && IsIPv4()) ) { |
41d93087 | 1011 | xinet_ntop(AF_INET, &m_SocketAddr.sin_addr, buf, blen); |
1012 | #endif | |
1013 | } else { | |
1014 | debugs(14,0,"WARNING: Corrupt IP Address details OR required to display in unknown format (" << | |
26ac0430 | 1015 | force << "). accepted={" << AF_UNSPEC << "," << AF_INET << "," << AF_INET6 << "}"); |
41d93087 | 1016 | fprintf(stderr,"WARNING: Corrupt IP Address details OR required to display in unknown format (%d). accepted={%d,%d,%d} ", |
1017 | force, AF_UNSPEC, AF_INET, AF_INET6); | |
d85c3078 | 1018 | memcpy(buf,"dead:beef::\0", min((const unsigned int)13,blen)); |
41d93087 | 1019 | assert(false); |
1020 | } | |
1021 | ||
1022 | return buf; | |
1023 | } | |
1024 | ||
565b233e | 1025 | unsigned int IpAddress::ToHostname(char *buf, const unsigned int blen) const { |
41d93087 | 1026 | char *p = buf; |
1027 | ||
26ac0430 | 1028 | if (IsIPv6() && blen > 0) { |
41d93087 | 1029 | *p = '['; |
1030 | p++; | |
1031 | } | |
1032 | ||
1033 | /* 7 being space for [,], and port */ | |
26ac0430 | 1034 | if ( IsIPv6() ) |
41d93087 | 1035 | NtoA(p, blen-7, AF_INET6); |
1036 | else | |
1037 | NtoA(p, blen-7, AF_INET); | |
1038 | ||
1039 | // find the end of the new string | |
26ac0430 | 1040 | while (*p != '\0' && p < buf+blen) |
41d93087 | 1041 | p++; |
1042 | ||
26ac0430 | 1043 | if (IsIPv6() && p < (buf+blen-1) ) { |
41d93087 | 1044 | *p = ']'; |
1045 | p++; | |
1046 | } | |
1047 | ||
1048 | /* terminate just in case. */ | |
1049 | *p = '\0'; | |
1050 | ||
1051 | /* return size of buffer now used */ | |
1052 | return (p - buf); | |
1053 | } | |
1054 | ||
565b233e | 1055 | char* IpAddress::ToURL(char* buf, unsigned int blen) const { |
41d93087 | 1056 | char *p = buf; |
1057 | ||
1058 | // Ensure we have a buffer. | |
1059 | ||
26ac0430 | 1060 | if (buf == NULL) { |
41d93087 | 1061 | return NULL; |
1062 | } | |
1063 | ||
1064 | p += ToHostname(p, blen); | |
1065 | ||
26ac0430 | 1066 | if (m_SocketAddr.sin6_port > 0 && p < (buf+blen-6) ) { |
41d93087 | 1067 | /* 6 is max length of expected ':port' (short int) */ |
1068 | snprintf(p, 6,":%d", GetPort() ); | |
1069 | } | |
1070 | ||
1071 | // force a null-terminated string | |
303bfd76 | 1072 | buf[blen-1] = '\0'; |
41d93087 | 1073 | |
1074 | return buf; | |
1075 | } | |
1076 | ||
565b233e | 1077 | void IpAddress::GetSockAddr(struct sockaddr_storage &addr, const int family) const { |
52b694c2 AJ |
1078 | struct sockaddr_in *sin = NULL; |
1079 | ||
26ac0430 | 1080 | if ( family == AF_INET && !IsIPv4()) { |
0e1a47f0 | 1081 | // FIXME INET6: caller using the wrong socket type! |
565b233e | 1082 | debugs(14, DBG_CRITICAL, HERE << "IpAddress::GetSockAddr : Cannot convert non-IPv4 to IPv4. from " << *this); |
0e1a47f0 AJ |
1083 | assert(false); |
1084 | } | |
1085 | ||
1086 | #if USE_IPV6 | |
26ac0430 | 1087 | if ( family == AF_INET6 || (family == AF_UNSPEC && IsIPv6()) ) { |
1ef0b9ce AJ |
1088 | struct sockaddr_in6 *ss6 = (struct sockaddr_in6*)&addr; |
1089 | GetSockAddr(*ss6); | |
26ac0430 | 1090 | } else if ( family == AF_INET || (family == AF_UNSPEC && IsIPv4()) ) { |
52b694c2 | 1091 | sin = (struct sockaddr_in*)&addr; |
1ef0b9ce | 1092 | GetSockAddr(*sin); |
52b694c2 AJ |
1093 | } else { |
1094 | IASSERT("false",false); | |
0e1a47f0 | 1095 | } |
8c37ea44 | 1096 | #else /* not USE_IPV6 */ |
52b694c2 | 1097 | sin = (struct sockaddr_in*)&addr; |
1ef0b9ce | 1098 | GetSockAddr(*sin); |
8c37ea44 | 1099 | #endif /* USE_IPV6 */ |
0e1a47f0 AJ |
1100 | } |
1101 | ||
565b233e | 1102 | void IpAddress::GetSockAddr(struct sockaddr_in &buf) const { |
41d93087 | 1103 | #if USE_IPV6 |
1104 | ||
26ac0430 | 1105 | if ( IsIPv4() ) { |
41d93087 | 1106 | buf.sin_family = AF_INET; |
1107 | buf.sin_port = m_SocketAddr.sin6_port; | |
1108 | Map6to4( m_SocketAddr.sin6_addr, buf.sin_addr); | |
26ac0430 | 1109 | } else { |
565b233e | 1110 | debugs(14, DBG_CRITICAL, HERE << "IpAddress::GetSockAddr : Cannot convert non-IPv4 to IPv4. from " << *this ); |
41d93087 | 1111 | |
1112 | memset(&buf,0xFFFFFFFF,sizeof(struct sockaddr_in)); | |
1113 | assert(false); | |
1114 | } | |
1115 | ||
1116 | #else | |
1117 | ||
1118 | memcpy(&buf, &m_SocketAddr, sizeof(struct sockaddr_in)); | |
1119 | ||
26ac0430 | 1120 | if (buf.sin_family == 0) { |
41d93087 | 1121 | buf.sin_family = AF_INET; |
1122 | } | |
1123 | ||
1124 | #endif | |
12f45551 AJ |
1125 | |
1126 | #if HAVE_SIN_LEN_IN_SAI | |
1127 | /* not all OS have this field, BUT when they do it can be a problem if set wrong */ | |
1ef0b9ce | 1128 | buf.sin_len = sizeof(struct sockaddr_in); |
12f45551 AJ |
1129 | #endif |
1130 | ||
41d93087 | 1131 | } |
1132 | ||
1133 | #if USE_IPV6 | |
1134 | ||
565b233e | 1135 | void IpAddress::GetSockAddr(struct sockaddr_in6 &buf) const { |
41d93087 | 1136 | memcpy(&buf, &m_SocketAddr, sizeof(struct sockaddr_in6)); |
1137 | /* maintain address family. It may have changed inside us. */ | |
1138 | buf.sin6_family = AF_INET6; | |
12f45551 AJ |
1139 | |
1140 | #if HAVE_SIN6_LEN_IN_SAI | |
1141 | /* not all OS have this field, BUT when they do it can be a problem if set wrong */ | |
1ef0b9ce | 1142 | buf.sin6_len = sizeof(struct sockaddr_in6); |
12f45551 | 1143 | #endif |
41d93087 | 1144 | } |
1145 | ||
1146 | #endif | |
1147 | ||
1148 | #if USE_IPV6 | |
1149 | ||
565b233e | 1150 | void IpAddress::Map4to6(const struct in_addr &in, struct in6_addr &out) const { |
41d93087 | 1151 | /* check for special cases */ |
1152 | ||
26ac0430 | 1153 | if ( in.s_addr == 0x00000000) { |
41d93087 | 1154 | /* ANYADDR */ |
1155 | ||
1156 | memset(&out, 0, sizeof(struct in6_addr)); | |
26ac0430 | 1157 | } else if ( in.s_addr == 0xFFFFFFFF) { |
41d93087 | 1158 | /* NOADDR */ |
1159 | ||
1160 | out.s6_addr32[0] = 0xFFFFFFFF; | |
1161 | out.s6_addr32[1] = 0xFFFFFFFF; | |
1162 | out.s6_addr32[2] = 0xFFFFFFFF; | |
1163 | out.s6_addr32[3] = 0xFFFFFFFF; | |
1164 | ||
26ac0430 | 1165 | } else { |
41d93087 | 1166 | /* general */ |
1167 | ||
1168 | memset(&out, 0, sizeof(struct in6_addr)); | |
1169 | out.s6_addr32[2] = htonl(0xFFFF); | |
1170 | out.s6_addr32[3] = in.s_addr; | |
1171 | } | |
1172 | } | |
1173 | ||
565b233e | 1174 | void IpAddress::Map6to4(const struct in6_addr &in, struct in_addr &out) const { |
41d93087 | 1175 | /* ANYADDR */ |
1176 | /* NOADDR */ | |
1177 | /* general */ | |
1178 | ||
1179 | memset(&out, 0, sizeof(struct in_addr)); | |
1180 | out.s_addr = in.s6_addr32[3]; | |
41d93087 | 1181 | } |
1182 | ||
1183 | #endif | |
1184 | ||
1185 | #if USE_IPV6 | |
565b233e | 1186 | void IpAddress::GetInAddr(in6_addr &buf) const { |
41d93087 | 1187 | memcpy(&buf, &m_SocketAddr.sin6_addr, sizeof(struct in6_addr)); |
1188 | } | |
1189 | ||
1190 | #endif | |
1191 | ||
565b233e | 1192 | bool IpAddress::GetInAddr(struct in_addr &buf) const { |
41d93087 | 1193 | |
1194 | #if USE_IPV6 | |
26ac0430 | 1195 | if ( IsIPv4() ) { |
41d93087 | 1196 | Map6to4((const in6_addr)m_SocketAddr.sin6_addr, buf); |
1197 | return true; | |
1198 | } | |
1199 | #else | |
1200 | ||
26ac0430 | 1201 | if ( IsIPv4() ) { |
41d93087 | 1202 | memcpy(&buf, &m_SocketAddr.sin_addr, sizeof(struct in_addr)); |
1203 | return true; | |
1204 | } | |
1205 | #endif | |
1206 | ||
1207 | // default: | |
1208 | // non-compatible IPv6 Pure Address | |
1209 | ||
565b233e | 1210 | debugs(14,1, HERE << "IpAddress::GetInAddr : Cannot convert non-IPv4 to IPv4. IPA=" << *this); |
41d93087 | 1211 | memset(&buf,0xFFFFFFFF,sizeof(struct in_addr)); |
1212 | assert(false); | |
1213 | return false; | |
1214 | } |