]>
git.ipfire.org Git - thirdparty/squid.git/blob - src/ip/Address.cc
2 * DEBUG: section 14 IP Storage and Handling
3 * AUTHOR: Amos Jeffries
5 * SQUID Internet Object Cache http://squid.nlanr.net/Squid/
6 * ----------------------------------------------------------
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.
17 * This Ip::Address code is copyright (C) 2007 by Treehouse Networks Ltd
18 * of New Zealand. It is published and Lisenced as an extension of
19 * squid under the same conditions as the main squid application.
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.
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.
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.
38 #include "compat/inet_ntop.h"
39 #include "compat/getaddrinfo.h"
41 #include "ip/Address.h"
53 #include <arpa/inet.h>
56 /* Debugging only. Dump the address content when a fatal assert is encountered. */
57 #define IASSERT(a,b) \
58 if(!(b)){ printf("assert \"%s\" at line %d\n", a, __LINE__); \
59 printf("Ip::Address invalid? with IsIPv4()=%c, IsIPv6()=%c\n",(IsIPv4()?'T':'F'),(IsIPv6()?'T':'F')); \
61 for(unsigned int i = 0; i < sizeof(m_SocketAddr.sin6_addr); ++i) { \
62 printf(" %x", m_SocketAddr.sin6_addr.s6_addr[i]); \
63 } printf("\n"); assert(b); \
67 Ip::Address::GetCIDR() const
72 const uint8_t *ptr
= m_SocketAddr
.sin6_addr
.s6_addr
;
74 /* Let's scan all the bits from Most Significant to Least */
75 /* Until we find an "0" bit. Then, we return */
78 /* return IPv4 CIDR for any Mapped address */
79 /* Thus only check the mapped bit */
85 for (; shift
<sizeof(m_SocketAddr
.sin6_addr
) ; ++shift
) {
90 continue ; /* A short-cut */
93 for (caught
= 0 , bit
= 7 ; !caught
&& (bit
<= 7); --bit
) {
94 caught
= ((byte
& 0x80) == 0x00); /* Found a '0' at 'bit' ? */
103 break; /* We have found the most significant "0" bit. */
110 Ip::Address::ApplyMask(Ip::Address
const &mask_addr
)
112 uint32_t *p1
= (uint32_t*)(&m_SocketAddr
.sin6_addr
);
113 uint32_t const *p2
= (uint32_t const *)(&mask_addr
.m_SocketAddr
.sin6_addr
);
114 unsigned int blen
= sizeof(m_SocketAddr
.sin6_addr
)/sizeof(uint32_t);
115 unsigned int changes
= 0;
117 for (unsigned int i
= 0; i
< blen
; ++i
) {
118 if ((p1
[i
] & p2
[i
]) != p1
[i
])
128 Ip::Address::ApplyMask(const unsigned int cidr
, int mtype
)
130 uint8_t clearbits
= 0;
133 // validation and short-cuts.
137 if (cidr
> 32 && mtype
== AF_INET
)
141 /* CIDR /0 is NoAddr regardless of the IPv4/IPv6 protocol */
146 clearbits
= (uint8_t)( (mtype
==AF_INET6
?128:32) -cidr
);
152 p
= (uint8_t*)(&m_SocketAddr
.sin6_addr
) + 15;
154 for (; clearbits
>0 && p
>= (uint8_t*)&m_SocketAddr
.sin6_addr
; --p
) {
156 *p
&= ((0xFF << clearbits
) & 0xFF);
168 Ip::Address::IsSockAddr() const
170 return (m_SocketAddr
.sin6_port
!= 0);
174 Ip::Address::IsIPv4() const
176 return IN6_IS_ADDR_V4MAPPED( &m_SocketAddr
.sin6_addr
);
180 Ip::Address::IsIPv6() const
186 Ip::Address::IsAnyAddr() const
188 return IN6_IS_ADDR_UNSPECIFIED(&m_SocketAddr
.sin6_addr
) || IN6_ARE_ADDR_EQUAL(&m_SocketAddr
.sin6_addr
, &v4_anyaddr
);
191 /// NOTE: Does NOT clear the Port stored. Ony the Address and Type.
193 Ip::Address::SetAnyAddr()
195 memset(&m_SocketAddr
.sin6_addr
, 0, sizeof(struct in6_addr
) );
198 /// NOTE: completely empties the Ip::Address structure. Address, Port, Type, everything.
200 Ip::Address::SetEmpty()
202 memset(&m_SocketAddr
, 0, sizeof(m_SocketAddr
) );
206 // Bug 2885 comment 78 explains.
207 // In short AIX has a different netinet/in.h union definition
208 const struct in6_addr
Ip::Address::v4_localhost
= {{{ 0x00000000, 0x00000000, 0x0000ffff, 0x7f000001 }}};
209 const struct in6_addr
Ip::Address::v4_anyaddr
= {{{ 0x00000000, 0x00000000, 0x0000ffff, 0x00000000 }}};
210 const struct in6_addr
Ip::Address::v4_noaddr
= {{{ 0x00000000, 0x00000000, 0x0000ffff, 0xffffffff }}};
211 const struct in6_addr
Ip::Address::v6_noaddr
= {{{ 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff }}};
213 const struct in6_addr
Ip::Address::v4_localhost
= {{{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
214 0x00, 0x00, 0xff, 0xff, 0x7f, 0x00, 0x00, 0x01 }}
216 const struct in6_addr
Ip::Address::v4_anyaddr
= {{{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
217 0x00, 0x00, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00 }}
219 const struct in6_addr
Ip::Address::v4_noaddr
= {{{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
220 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }}
222 const struct in6_addr
Ip::Address::v6_noaddr
= {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
223 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }}
228 Ip::Address::SetIPv4()
230 if ( IsLocalhost() ) {
231 m_SocketAddr
.sin6_addr
= v4_localhost
;
236 m_SocketAddr
.sin6_addr
= v4_anyaddr
;
241 m_SocketAddr
.sin6_addr
= v4_noaddr
;
248 // anything non-IPv4 and non-convertable is BAD.
253 Ip::Address::IsLocalhost() const
255 return IN6_IS_ADDR_LOOPBACK( &m_SocketAddr
.sin6_addr
) || IN6_ARE_ADDR_EQUAL( &m_SocketAddr
.sin6_addr
, &v4_localhost
);
259 Ip::Address::SetLocalhost()
261 if (Ip::EnableIpv6
) {
262 m_SocketAddr
.sin6_addr
= in6addr_loopback
;
263 m_SocketAddr
.sin6_family
= AF_INET6
;
265 m_SocketAddr
.sin6_addr
= v4_localhost
;
266 m_SocketAddr
.sin6_family
= AF_INET
;
271 Ip::Address::IsSiteLocal6() const
273 // RFC 4193 the site-local allocated range is fc00::/7
274 // with fd00::/8 as the only currently allocated range (so we test it first).
275 // BUG: as of 2010-02 Linux and BSD define IN6_IS_ADDR_SITELOCAL() to check for fec::/10
276 return m_SocketAddr
.sin6_addr
.s6_addr
[0] == static_cast<uint8_t>(0xfd) ||
277 m_SocketAddr
.sin6_addr
.s6_addr
[0] == static_cast<uint8_t>(0xfc);
281 Ip::Address::IsSlaac() const
283 return m_SocketAddr
.sin6_addr
.s6_addr
[10] == static_cast<uint8_t>(0xff) &&
284 m_SocketAddr
.sin6_addr
.s6_addr
[11] == static_cast<uint8_t>(0xfe);
288 Ip::Address::IsNoAddr() const
290 // IFF the address == 0xff..ff (all ones)
291 return IN6_ARE_ADDR_EQUAL( &m_SocketAddr
.sin6_addr
, &v6_noaddr
)
292 || IN6_ARE_ADDR_EQUAL( &m_SocketAddr
.sin6_addr
, &v4_noaddr
);
296 Ip::Address::SetNoAddr()
298 memset(&m_SocketAddr
.sin6_addr
, 0xFF, sizeof(struct in6_addr
) );
299 m_SocketAddr
.sin6_family
= AF_INET6
;
303 Ip::Address::GetReverseString6(char buf
[MAX_IPSTRLEN
], const struct in6_addr
&dat
) const
306 unsigned char const *r
= dat
.s6_addr
;
309 /* 4321:0:1:2:3:4:567:89ab */
311 /* 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. */
313 /* Work from the binary field. Anything else may have representation changes. */
314 /* The sin6_port and sin6_addr members shall be in network byte order. */
316 /* Compile Err: 'Too many arguments for format. */
318 for (int i
= 15; i
>= 0; --i
, p
+=4) {
319 snprintf(p
, 5, "%x.%x.", ((r
[i
])&0xf), (((r
[i
])>>4)&0xf) );
323 /* ip6.int is now deprecated TLD, use ip6.arpa instead. */
324 snprintf(p
,10,"ip6.arpa.");
330 Ip::Address::GetReverseString4(char buf
[MAX_IPSTRLEN
], const struct in_addr
&dat
) const
332 unsigned int i
= (unsigned int) ntohl(dat
.s_addr
);
333 snprintf(buf
, 32, "%u.%u.%u.%u.in-addr.arpa.",
342 Ip::Address::GetReverseString(char buf
[MAX_IPSTRLEN
], int show_type
) const
345 if (show_type
== AF_UNSPEC
) {
346 show_type
= IsIPv6() ? AF_INET6
: AF_INET
;
349 if (show_type
== AF_INET
&& IsIPv4()) {
350 struct in_addr
* tmp
= (struct in_addr
*)&m_SocketAddr
.sin6_addr
.s6_addr
[12];
351 return GetReverseString4(buf
, *tmp
);
352 } else if ( show_type
== AF_INET6
&& IsIPv6() ) {
353 return GetReverseString6(buf
, m_SocketAddr
.sin6_addr
);
356 debugs(14,0, "Unable to convert '" << NtoA(buf
,MAX_IPSTRLEN
) << "' to the rDNS type requested.");
364 Ip::Address::operator =(const Ip::Address
&s
)
366 memcpy(this, &s
, sizeof(Ip::Address
));
370 Ip::Address::Address(const char*s
)
373 LookupHostIP(s
, true);
377 Ip::Address::operator =(const char* s
)
379 return LookupHostIP(s
, true);
383 Ip::Address::GetHostByName(const char* s
)
385 return LookupHostIP(s
, false);
389 Ip::Address::LookupHostIP(const char *s
, bool nodns
)
395 struct addrinfo
*res
= NULL
;
397 struct addrinfo want
;
399 memset(&want
, 0, sizeof(struct addrinfo
));
401 want
.ai_flags
= AI_NUMERICHOST
; // prevent actual DNS lookups!
404 else if (!Ip::EnableIpv6
)
405 want
.ai_family
= AF_INET
; // maybe prevent IPv6 DNS lookups.
408 if ( (err
= getaddrinfo(s
, NULL
, &want
, &res
)) != 0) {
409 debugs(14,3, HERE
<< "Given Non-IP '" << s
<< "': " << gai_strerror(err
) );
410 /* free the memory getaddrinfo() dynamically allocated. */
419 * NP: =(sockaddr_*) may alter the port. we don't want that.
420 * all we have been given as input was an IPA.
426 /* free the memory getaddrinfo() dynamically allocated. */
434 Ip::Address::Address(struct sockaddr_in
const &s
)
441 Ip::Address::operator =(struct sockaddr_in
const &s
)
443 Map4to6((const in_addr
)s
.sin_addr
, m_SocketAddr
.sin6_addr
);
444 m_SocketAddr
.sin6_port
= s
.sin_port
;
445 m_SocketAddr
.sin6_family
= AF_INET6
;
450 Ip::Address::operator =(const struct sockaddr_storage
&s
)
452 /* some AF_* magic to tell socket types apart and what we need to do */
453 if (s
.ss_family
== AF_INET6
) {
454 memcpy(&m_SocketAddr
, &s
, sizeof(struct sockaddr_in
));
455 } else { // convert it to our storage mapping.
456 struct sockaddr_in
*sin
= (struct sockaddr_in
*)&s
;
457 m_SocketAddr
.sin6_port
= sin
->sin_port
;
458 Map4to6( sin
->sin_addr
, m_SocketAddr
.sin6_addr
);
463 Ip::Address::Address(struct sockaddr_in6
const &s
)
470 Ip::Address::operator =(struct sockaddr_in6
const &s
)
472 memcpy(&m_SocketAddr
, &s
, sizeof(struct sockaddr_in6
));
477 Ip::Address::Address(struct in_addr
const &s
)
484 Ip::Address::operator =(struct in_addr
const &s
)
486 Map4to6((const in_addr
)s
, m_SocketAddr
.sin6_addr
);
487 m_SocketAddr
.sin6_family
= AF_INET6
;
491 Ip::Address::Address(struct in6_addr
const &s
)
498 Ip::Address::operator =(struct in6_addr
const &s
)
501 memcpy(&m_SocketAddr
.sin6_addr
, &s
, sizeof(struct in6_addr
));
502 m_SocketAddr
.sin6_family
= AF_INET6
;
507 Ip::Address::Address(const Ip::Address
&s
)
513 Ip::Address::Address(Ip::Address
*s
)
517 memcpy(this, s
, sizeof(Ip::Address
));
520 Ip::Address::Address(const struct hostent
&s
)
527 Ip::Address::operator =(const struct hostent
&s
)
530 struct in_addr
* ipv4
= NULL
;
532 struct in6_addr
* ipv6
= NULL
;
535 // char *h_name; /* official name of host */
536 // char **h_aliases; /* alias list */
537 // int h_addrtype; /* host address type */
538 // int h_length; /* length of address */
539 // char **h_addr_list; /* list of addresses */
542 switch (s
.h_addrtype
) {
545 ipv4
= (in_addr
*)(s
.h_addr_list
[0]);
551 ipv6
= (in6_addr
*)(s
.h_addr_list
[0]);
557 IASSERT("false",false);
564 Ip::Address::Address(const struct addrinfo
&s
)
571 Ip::Address::operator =(const struct addrinfo
&s
)
574 struct sockaddr_in
* ipv4
= NULL
;
576 struct sockaddr_in6
* ipv6
= NULL
;
579 // int ai_flags; /* input flags */
580 // int ai_family; /* protocol family for socket */
581 // int ai_socktype; /* socket type */
582 // int ai_protocol; /* protocol for socket */
583 // socklen_t ai_addrlen; /* length of socket-address */
584 // struct sockaddr *ai_addr; /* socket-address for socket */
585 // char *ai_canonname; /* canonical name for service location */
586 // struct addrinfo *ai_next; /* pointer to next in list */
589 switch (s
.ai_family
) {
592 ipv4
= (sockaddr_in
*)(s
.ai_addr
);
599 ipv6
= (sockaddr_in6
*)(s
.ai_addr
);
607 // attempt to handle partially initialised addrinfo.
608 // such as those where data only comes from getsockopt()
609 if (s
.ai_addr
!= NULL
) {
610 if (s
.ai_addrlen
== sizeof(struct sockaddr_in6
)) {
611 operator=(*((struct sockaddr_in6
*)s
.ai_addr
));
613 } else if (s
.ai_addrlen
== sizeof(struct sockaddr_in
)) {
614 operator=(*((struct sockaddr_in
*)s
.ai_addr
));
625 Ip::Address::GetAddrInfo(struct addrinfo
*&dst
, int force
) const
631 memset(dst
, 0, sizeof(struct addrinfo
));
634 dst
->ai_flags
= AI_NUMERICHOST
;
636 if (dst
->ai_socktype
== 0)
637 dst
->ai_socktype
= SOCK_STREAM
;
639 if (dst
->ai_socktype
== SOCK_STREAM
// implies TCP
640 && dst
->ai_protocol
== 0)
641 dst
->ai_protocol
= IPPROTO_TCP
;
643 if (dst
->ai_socktype
== SOCK_DGRAM
// implies UDP
644 && dst
->ai_protocol
== 0)
645 dst
->ai_protocol
= IPPROTO_UDP
;
647 if (force
== AF_INET6
|| (force
== AF_UNSPEC
&& IsIPv6()) ) {
648 dst
->ai_addr
= (struct sockaddr
*)new sockaddr_in6
;
650 memset(dst
->ai_addr
,0,sizeof(struct sockaddr_in6
));
652 GetSockAddr(*((struct sockaddr_in6
*)dst
->ai_addr
));
654 dst
->ai_addrlen
= sizeof(struct sockaddr_in6
);
656 dst
->ai_family
= ((struct sockaddr_in6
*)dst
->ai_addr
)->sin6_family
;
660 * Enable only if you must and please report to squid-dev if you find a need for this.
662 * Vista may need this to cope with dual-stack (unsetting IP6_V6ONLY).
663 * http://msdn.microsoft.com/en-us/library/ms738574(VS.85).aspx
664 * Linux appears to only do some things when its present.
666 * FreeBSD dies horribly when using dual-stack with it set.
667 * (43) Protocol not supported
669 dst
->ai_protocol
= IPPROTO_IPV6
;
672 } else if ( force
== AF_INET
|| (force
== AF_UNSPEC
&& IsIPv4()) ) {
674 dst
->ai_addr
= (struct sockaddr
*)new sockaddr_in
;
676 memset(dst
->ai_addr
,0,sizeof(struct sockaddr_in
));
678 GetSockAddr(*((struct sockaddr_in
*)dst
->ai_addr
));
680 dst
->ai_addrlen
= sizeof(struct sockaddr_in
);
682 dst
->ai_family
= ((struct sockaddr_in
*)dst
->ai_addr
)->sin_family
;
684 IASSERT("false",false);
689 Ip::Address::InitAddrInfo(struct addrinfo
*&ai
)
693 memset(ai
,0,sizeof(struct addrinfo
));
696 // remove any existing data.
697 if (ai
->ai_addr
) delete ai
->ai_addr
;
699 ai
->ai_addr
= (struct sockaddr
*)new sockaddr_in6
;
700 memset(ai
->ai_addr
, 0, sizeof(struct sockaddr_in6
));
702 ai
->ai_addrlen
= sizeof(struct sockaddr_in6
);
707 Ip::Address::FreeAddrInfo(struct addrinfo
*&ai
)
709 if (ai
== NULL
) return;
711 if (ai
->ai_addr
) delete ai
->ai_addr
;
717 // NP: name fields are NOT allocated at present.
724 Ip::Address::matchIPAddr(const Ip::Address
&rhs
) const
726 uint8_t *l
= (uint8_t*)m_SocketAddr
.sin6_addr
.s6_addr
;
727 uint8_t *r
= (uint8_t*)rhs
.m_SocketAddr
.sin6_addr
.s6_addr
;
729 // loop a byte-wise compare
730 // NP: match MUST be R-to-L : L-to-R produces inconsistent gt/lt results at varying CIDR
731 // expected difference on CIDR is gt/eq or lt/eq ONLY.
732 for (unsigned int i
= 0 ; i
< sizeof(m_SocketAddr
.sin6_addr
) ; ++i
) {
745 Ip::Address::compareWhole(const Ip::Address
&rhs
) const
747 return memcmp(this, &rhs
, sizeof(*this));
751 Ip::Address::operator ==(const Ip::Address
&s
) const
753 return (0 == matchIPAddr(s
));
757 Ip::Address::operator !=(const Ip::Address
&s
) const
759 return ! ( operator==(s
) );
763 Ip::Address::operator <=(const Ip::Address
&rhs
) const
765 if (IsAnyAddr() && !rhs
.IsAnyAddr())
768 return (matchIPAddr(rhs
) <= 0);
772 Ip::Address::operator >=(const Ip::Address
&rhs
) const
774 if (IsNoAddr() && !rhs
.IsNoAddr())
777 return ( matchIPAddr(rhs
) >= 0);
781 Ip::Address::operator >(const Ip::Address
&rhs
) const
783 if (IsNoAddr() && !rhs
.IsNoAddr())
786 return ( matchIPAddr(rhs
) > 0);
790 Ip::Address::operator <(const Ip::Address
&rhs
) const
792 if (IsAnyAddr() && !rhs
.IsAnyAddr())
795 return ( matchIPAddr(rhs
) < 0);
799 Ip::Address::GetPort() const
801 return ntohs( m_SocketAddr
.sin6_port
);
805 Ip::Address::SetPort(unsigned short prt
)
807 m_SocketAddr
.sin6_port
= htons(prt
);
813 * NtoA Given a buffer writes a readable ascii version of the IPA and/or port stored
815 * Buffer must be of a size large enough to hold the converted address.
816 * This size is provided in the form of a global defined variable MAX_IPSTRLEN
817 * Should a buffer shorter be provided the string result will be truncated
818 * at the length of the available buffer.
820 * A copy of the buffer is also returned for simple immediate display.
823 Ip::Address::NtoA(char* buf
, const unsigned int blen
, int force
) const
825 // Ensure we have a buffer.
830 /* some external code may have blindly memset a parent. */
831 /* thats okay, our default is known */
834 memcpy(buf
,"::\0", min(static_cast<unsigned int>(3),blen
));
836 memcpy(buf
,"0.0.0.0\0", min(static_cast<unsigned int>(8),blen
));
840 memset(buf
,0,blen
); // clear buffer before write
842 /* Pure-IPv6 CANNOT be displayed in IPv4 format. */
843 /* However IPv4 CAN. */
844 if ( force
== AF_INET
&& !IsIPv4() ) {
846 memcpy(buf
, "{!IPv4}\0", min(static_cast<unsigned int>(8),blen
));
851 if ( force
== AF_INET6
|| (force
== AF_UNSPEC
&& IsIPv6()) ) {
853 inet_ntop(AF_INET6
, &m_SocketAddr
.sin6_addr
, buf
, blen
);
855 } else if ( force
== AF_INET
|| (force
== AF_UNSPEC
&& IsIPv4()) ) {
859 inet_ntop(AF_INET
, &tmp
, buf
, blen
);
861 debugs(14,0,"WARNING: Corrupt IP Address details OR required to display in unknown format (" <<
862 force
<< "). accepted={" << AF_UNSPEC
<< "," << AF_INET
<< "," << AF_INET6
<< "}");
863 fprintf(stderr
,"WARNING: Corrupt IP Address details OR required to display in unknown format (%d). accepted={%d,%d,%d} ",
864 force
, AF_UNSPEC
, AF_INET
, AF_INET6
);
865 memcpy(buf
,"dead:beef::\0", min(static_cast<unsigned int>(13),blen
));
873 Ip::Address::ToHostname(char *buf
, const unsigned int blen
) const
877 if (IsIPv6() && blen
> 0) {
882 /* 8 being space for [ ] : and port digits */
884 NtoA(p
, blen
-8, AF_INET6
);
886 NtoA(p
, blen
-8, AF_INET
);
888 // find the end of the new string
889 while (*p
!= '\0' && p
< buf
+blen
)
892 if (IsIPv6() && p
< (buf
+blen
-1) ) {
897 /* terminate just in case. */
900 /* return size of buffer now used */
905 Ip::Address::ToURL(char* buf
, unsigned int blen
) const
909 // Ensure we have a buffer.
915 p
+= ToHostname(p
, blen
);
917 if (m_SocketAddr
.sin6_port
> 0 && p
<= (buf
+blen
-7) ) {
918 // ':port' (short int) needs at most 6 bytes plus 1 for 0-terminator
919 snprintf(p
, 7, ":%d", GetPort() );
922 // force a null-terminated string
929 Ip::Address::GetSockAddr(struct sockaddr_storage
&addr
, const int family
) const
931 struct sockaddr_in
*sin
= NULL
;
933 if ( family
== AF_INET
&& !IsIPv4()) {
934 // FIXME INET6: caller using the wrong socket type!
935 debugs(14, DBG_CRITICAL
, HERE
<< "Ip::Address::GetSockAddr : Cannot convert non-IPv4 to IPv4. from " << *this);
939 if ( family
== AF_INET6
|| (family
== AF_UNSPEC
&& IsIPv6()) ) {
940 struct sockaddr_in6
*ss6
= (struct sockaddr_in6
*)&addr
;
942 } else if ( family
== AF_INET
|| (family
== AF_UNSPEC
&& IsIPv4()) ) {
943 sin
= (struct sockaddr_in
*)&addr
;
946 IASSERT("false",false);
951 Ip::Address::GetSockAddr(struct sockaddr_in
&buf
) const
954 buf
.sin_family
= AF_INET
;
955 buf
.sin_port
= m_SocketAddr
.sin6_port
;
956 Map6to4( m_SocketAddr
.sin6_addr
, buf
.sin_addr
);
958 debugs(14, DBG_CRITICAL
, HERE
<< "Ip::Address::GetSockAddr : Cannot convert non-IPv4 to IPv4. from " << *this );
960 memset(&buf
,0xFFFFFFFF,sizeof(struct sockaddr_in
));
964 #if HAVE_SIN_LEN_IN_SAI
965 /* not all OS have this field, BUT when they do it can be a problem if set wrong */
966 buf
.sin_len
= sizeof(struct sockaddr_in
);
971 Ip::Address::GetSockAddr(struct sockaddr_in6
&buf
) const
973 memcpy(&buf
, &m_SocketAddr
, sizeof(struct sockaddr_in6
));
974 /* maintain address family. It may have changed inside us. */
975 buf
.sin6_family
= AF_INET6
;
977 #if HAVE_SIN6_LEN_IN_SAI
978 /* not all OS have this field, BUT when they do it can be a problem if set wrong */
979 buf
.sin6_len
= sizeof(struct sockaddr_in6
);
984 Ip::Address::Map4to6(const struct in_addr
&in
, struct in6_addr
&out
) const
986 /* check for special cases */
988 if ( in
.s_addr
== 0x00000000) {
991 } else if ( in
.s_addr
== 0xFFFFFFFF) {
997 out
.s6_addr
[12] = ((uint8_t *)&in
.s_addr
)[0];
998 out
.s6_addr
[13] = ((uint8_t *)&in
.s_addr
)[1];
999 out
.s6_addr
[14] = ((uint8_t *)&in
.s_addr
)[2];
1000 out
.s6_addr
[15] = ((uint8_t *)&in
.s_addr
)[3];
1005 Ip::Address::Map6to4(const struct in6_addr
&in
, struct in_addr
&out
) const
1011 memset(&out
, 0, sizeof(struct in_addr
));
1012 ((uint8_t *)&out
.s_addr
)[0] = in
.s6_addr
[12];
1013 ((uint8_t *)&out
.s_addr
)[1] = in
.s6_addr
[13];
1014 ((uint8_t *)&out
.s_addr
)[2] = in
.s6_addr
[14];
1015 ((uint8_t *)&out
.s_addr
)[3] = in
.s6_addr
[15];
1019 Ip::Address::GetInAddr(in6_addr
&buf
) const
1021 memcpy(&buf
, &m_SocketAddr
.sin6_addr
, sizeof(struct in6_addr
));
1025 Ip::Address::GetInAddr(struct in_addr
&buf
) const
1028 Map6to4((const in6_addr
)m_SocketAddr
.sin6_addr
, buf
);
1033 // non-compatible IPv6 Pure Address
1035 debugs(14,1, HERE
<< "Ip::Address::GetInAddr : Cannot convert non-IPv4 to IPv4. IPA=" << *this);
1036 memset(&buf
,0xFFFFFFFF,sizeof(struct in_addr
));