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* DEBUG: section 14 IP Storage and Handling
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* AUTHOR: Amos Jeffries
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* SQUID Internet Object Cache http://squid.nlanr.net/Squid/
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* ----------------------------------------------------------
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* Squid is the result of efforts by numerous individuals from the
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* Internet community. Development is led by Duane Wessels of the
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* National Laboratory for Applied Network Research and funded by the
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* National Science Foundation. Squid is Copyrighted (C) 1998 by
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* the Regents of the University of California. Please see the
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* COPYRIGHT file for full details. Squid incorporates software
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* developed and/or copyrighted by other sources. Please see the
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* CREDITS file for full details.
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* This IpAddress code is copyright (C) 2007 by Treehouse Networks Ltd
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* of New Zealand. It is published and Lisenced as an extension of
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* squid under the same conditions as the main squid application.
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
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#include "ip/IpAddress.h"
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#include <arpa/inet.h> /* inet_ntoa() */
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#error "INET6 defined but has been deprecated! Try running bootstrap and configure again."
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/* We want to use the debug routines when running as module of squid. */
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/* otherwise fallback to printf if those are not available. */
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# define debugs(a,b,c) // drop.
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#warning "IpAddress built with Debugs!!"
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# include "../src/Debug.h"
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// So there are some places where I will drop to using Macros too.
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// At least I can restrict them to this file so they don't corrupt the app with C code.
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# define sin6_addr sin_addr
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# define sin6_port sin_port
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# define sin6_family sin_family
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# define s6_addr s_addr
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static const unsigned int STRLEN_IP4A = 16; // aaa.bbb.ccc.ddd\0
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static const unsigned int STRLEN_IP4R = 28; // ddd.ccc.bbb.aaa.in-addr.arpa.\0
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static const unsigned int STRLEN_IP4S = 21; // ddd.ccc.bbb.aaa:ppppp\0
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static const unsigned int MAX_IP4_STRLEN = STRLEN_IP4R;
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static const unsigned int STRLEN_IP6A = 42; // [ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff]/0
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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
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static const unsigned int STRLEN_IP6S = 48; // [ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff]:00000/0
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static const unsigned int MAX_IP6_STRLEN = STRLEN_IP6R;
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/* Debugging only. Dump the address content when a fatal assert is encountered. */
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#define IASSERT(a,b) \
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if(!(b)){ printf("assert \"%s\" at line %d\n", a, __LINE__); \
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printf("IpAddress invalid? with IsIPv4()=%c, IsIPv6()=%c\n",(IsIPv4()?'T':'F'),(IsIPv6()?'T':'F')); \
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for(unsigned int i = 0; i < sizeof(m_SocketAddr.sin6_addr); i++) { \
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printf(" %x", m_SocketAddr.sin6_addr.s6_addr[i]); \
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} printf("\n"); assert(b); \
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#define IASSERT(a,b) \
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if(!(b)){ printf("assert \"%s\" at line %d\n", a, __LINE__); \
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printf("IpAddress invalid? with IsIPv4()=%c, IsIPv6()=%c\n",(IsIPv4()?'T':'F'),(IsIPv6()?'T':'F')); \
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printf("ADDRESS: %x\n", (unsigned int)m_SocketAddr.sin_addr.s_addr); \
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IpAddress::IpAddress()
112
IpAddress::~IpAddress()
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memset(this,0,sizeof(IpAddress));
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IpAddress::GetCIDR() const
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const uint8_t *ptr= m_SocketAddr.sin6_addr.s6_addr;
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const uint8_t *ptr= (uint8_t *)&m_SocketAddr.sin_addr.s_addr;
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/* Let's scan all the bits from Most Significant to Least */
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/* Until we find an "0" bit. Then, we return */
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/* return IPv4 CIDR for any Mapped address */
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/* Thus only check the mapped bit */
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for (;shift<sizeof(m_SocketAddr.sin6_addr) ;shift++) {
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continue ; /* A short-cut */
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for (caught = 0 , bit= 7 ; !caught && (bit <= 7); bit--) {
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caught = ((byte & 0x80) == 0x00); /* Found a '0' at 'bit' ? */
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break; /* We have found the most significant "0" bit. */
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const int IpAddress::ApplyMask(IpAddress const &mask_addr)
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uint32_t *p1 = (uint32_t*)(&m_SocketAddr.sin6_addr);
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uint32_t const *p2 = (uint32_t const *)(&mask_addr.m_SocketAddr.sin6_addr);
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unsigned int blen = sizeof(m_SocketAddr.sin6_addr)/sizeof(uint32_t);
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unsigned int changes = 0;
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for (unsigned int i = 0; i < blen; i++) {
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if ((p1[i] & p2[i]) != p1[i])
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/* we have found a situation where mask forms or destroys a IPv4 map. */
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bool IpAddress::ApplyMask(const unsigned int cidr, int mtype)
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uint8_t clearbits = 0;
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IASSERT("mtype != AF_INET6", mtype != AF_INET6); /* using IPv6 in IPv4 is invalid. */
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if (mtype == AF_UNSPEC)
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if (mtype == AF_UNSPEC)
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// validation and short-cuts.
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if (cidr > 32 && mtype == AF_INET)
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/* CIDR /0 is NoAddr regardless of the IPv4/IPv6 protocol */
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clearbits = (uint8_t)( (mtype==AF_INET6?128:32) -cidr);
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p = (uint8_t*)(&m_SocketAddr.sin6_addr) + 15;
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p = (uint8_t*)(&m_SocketAddr.sin_addr) + 3;
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for (; clearbits>0 && p >= (uint8_t*)&m_SocketAddr.sin6_addr ; p-- ) {
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*p &= ((0xFF << clearbits) & 0xFF);
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bool IpAddress::IsSockAddr() const
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return (m_SocketAddr.sin6_port != 0);
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bool IpAddress::IsIPv4() const
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return IsAnyAddr() || IsNoAddr() ||
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( m_SocketAddr.sin6_addr.s6_addr32[0] == htonl(0x00000000) &&
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m_SocketAddr.sin6_addr.s6_addr32[1] == htonl(0x00000000) &&
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m_SocketAddr.sin6_addr.s6_addr32[2] == htonl(0x0000FFFF)
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return true; // enforce IPv4 in IPv4-only mode.
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bool IpAddress::IsIPv6() const
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return IsAnyAddr() || IsNoAddr() ||
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!( m_SocketAddr.sin6_addr.s6_addr32[0] == htonl(0x00000000) &&
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m_SocketAddr.sin6_addr.s6_addr32[1] == htonl(0x00000000) &&
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m_SocketAddr.sin6_addr.s6_addr32[2] == htonl(0x0000FFFF)
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return false; // enforce IPv4 in IPv4-only mode.
280
bool IpAddress::IsAnyAddr() const
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return m_SocketAddr.sin6_addr.s6_addr32[0] == 0
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&& m_SocketAddr.sin6_addr.s6_addr32[1] == 0
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&& m_SocketAddr.sin6_addr.s6_addr32[2] == 0
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&& m_SocketAddr.sin6_addr.s6_addr32[3] == 0
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return (INADDR_ANY == m_SocketAddr.sin_addr.s_addr);
294
/// NOTE: Does NOT clear the Port stored. Ony the Address and Type.
295
void IpAddress::SetAnyAddr()
298
memset(&m_SocketAddr.sin6_addr, 0, sizeof(struct in6_addr) );
300
memset(&m_SocketAddr.sin_addr, 0, sizeof(struct in_addr) );
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/// NOTE: completely empties the IpAddress structure. Address, Port, Type, everything.
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void IpAddress::SetEmpty()
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memset(&m_SocketAddr, 0, sizeof(m_SocketAddr) );
310
bool IpAddress::SetIPv4()
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if ( IsLocalhost() ) {
315
m_SocketAddr.sin6_addr.s6_addr32[2] = htonl(0xffff);
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m_SocketAddr.sin6_addr.s6_addr32[3] = htonl(0x7F000001);
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m_SocketAddr.sin6_addr.s6_addr32[2] = htonl(0xffff);
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// anything non-IPv4 and non-convertable is BAD.
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return true; // Always IPv4 in IPv4-only builds.
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bool IpAddress::IsLocalhost() const
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return ( m_SocketAddr.sin6_addr.s6_addr32[0] == 0
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&& m_SocketAddr.sin6_addr.s6_addr32[1] == 0
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&& m_SocketAddr.sin6_addr.s6_addr32[2] == 0
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&& m_SocketAddr.sin6_addr.s6_addr32[3] == htonl(0x1)
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( m_SocketAddr.sin6_addr.s6_addr32[0] == 0
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&& m_SocketAddr.sin6_addr.s6_addr32[1] == 0
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&& m_SocketAddr.sin6_addr.s6_addr32[2] == htonl(0xffff)
347
&& m_SocketAddr.sin6_addr.s6_addr32[3] == htonl(0x7F000001)
351
return (htonl(0x7F000001) == m_SocketAddr.sin_addr.s_addr);
355
void IpAddress::SetLocalhost()
359
m_SocketAddr.sin6_addr.s6_addr[15] = 0x1;
360
m_SocketAddr.sin6_family = AF_INET6;
363
m_SocketAddr.sin_addr.s_addr = htonl(0x7F000001);
364
m_SocketAddr.sin_family = AF_INET;
368
bool IpAddress::IsNoAddr() const
370
// IFF the address == 0xff..ff (all ones)
372
return m_SocketAddr.sin6_addr.s6_addr32[0] == 0xFFFFFFFF
373
&& m_SocketAddr.sin6_addr.s6_addr32[1] == 0xFFFFFFFF
374
&& m_SocketAddr.sin6_addr.s6_addr32[2] == 0xFFFFFFFF
375
&& m_SocketAddr.sin6_addr.s6_addr32[3] == 0xFFFFFFFF
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return 0xFFFFFFFF == m_SocketAddr.sin_addr.s_addr;
383
void IpAddress::SetNoAddr()
386
memset(&m_SocketAddr.sin6_addr, 0xFFFFFFFF, sizeof(struct in6_addr) );
387
m_SocketAddr.sin6_family = AF_INET6;
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memset(&m_SocketAddr.sin_addr, 0xFFFFFFFF, sizeof(struct in_addr) );
390
m_SocketAddr.sin_family = AF_INET;
396
bool IpAddress::GetReverseString6(char buf[MAX_IPSTRLEN], const struct in6_addr &dat) const
399
unsigned char const *r = dat.s6_addr;
402
/* 4321:0:1:2:3:4:567:89ab */
404
/* 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. */
406
/* Work from the binary field. Anything else may have representation changes. */
407
/* The sin6_port and sin6_addr members shall be in network byte order. */
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/* Compile Err: 'Too many arguments for format. */
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for (int i = 15; i >= 0; i--, p+=4) {
412
snprintf(p, 5, "%x.%x.", ((r[i])&0xf), (((r[i])>>4)&0xf) );
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/* ip6.int is now deprecated TLD, use ip6.arpa instead. */
417
snprintf(p,10,"ip6.arpa.");
424
bool IpAddress::GetReverseString4(char buf[MAX_IPSTRLEN], const struct in_addr &dat) const
426
unsigned int i = (unsigned int) ntohl(dat.s_addr);
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snprintf(buf, 32, "%u.%u.%u.%u.in-addr.arpa.",
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bool IpAddress::GetReverseString(char buf[MAX_IPSTRLEN], int show_type) const
438
if (show_type == AF_UNSPEC) {
440
show_type = IsIPv6() ? AF_INET6 : AF_INET ;
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if (show_type == AF_INET && IsIPv4()) {
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return GetReverseString4(buf, *(struct in_addr*)&m_SocketAddr.sin6_addr.s6_addr32[3] );
450
} else if ( show_type == AF_INET6 && IsIPv6() ) {
451
return GetReverseString6(buf, m_SocketAddr.sin6_addr);
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return GetReverseString4(buf, m_SocketAddr.sin_addr);
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debugs(14,0, "Unable to convert '" << NtoA(buf,MAX_IPSTRLEN) << "' to the rDNS type requested.");
464
IpAddress& IpAddress::operator =(const IpAddress &s)
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memcpy(this, &s, sizeof(IpAddress));
470
IpAddress::IpAddress(const char*s)
476
bool IpAddress::operator =(const char* s)
478
return LookupHostIP(s, true);
481
bool IpAddress::GetHostByName(const char* s)
483
return LookupHostIP(s, false);
486
bool IpAddress::LookupHostIP(const char *s, bool nodns)
492
struct addrinfo *res = NULL;
494
struct addrinfo want;
496
memset(&want, 0, sizeof(struct addrinfo));
498
want.ai_flags = AI_NUMERICHOST; // prevent actual DNS lookups!
501
want.ai_family = AF_INET;
504
if ( (err = xgetaddrinfo(s, NULL, &want, &res)) != 0) {
505
debugs(14,1, HERE << "Given Bad IP '" << s << "': " << xgai_strerror(err) );
506
/* free the memory xgetaddrinfo() dynamically allocated. */
515
* NP: =(sockaddr_*) may alter the port. we don't want that.
516
* all we have been given as input was an IPA.
522
/* free the memory xgetaddrinfo() dynamically allocated. */
530
IpAddress::IpAddress(struct sockaddr_in const &s)
536
IpAddress& IpAddress::operator =(struct sockaddr_in const &s)
539
Map4to6((const in_addr)s.sin_addr, m_SocketAddr.sin6_addr);
540
m_SocketAddr.sin6_port = s.sin_port;
541
m_SocketAddr.sin6_family = AF_INET6;
544
memcpy(&m_SocketAddr, &s, sizeof(struct sockaddr_in));
547
/* maintain stored family values properly */
553
IpAddress& IpAddress::operator =(const struct sockaddr_storage &s)
556
/* some AF_* magic to tell socket types apart and what we need to do */
557
if (s.ss_family == AF_INET6) {
558
memcpy(&m_SocketAddr, &s, sizeof(struct sockaddr_in));
559
} else { // convert it to our storage mapping.
560
struct sockaddr_in *sin = (struct sockaddr_in*)&s;
561
m_SocketAddr.sin6_port = sin->sin_port;
562
Map4to6( sin->sin_addr, m_SocketAddr.sin6_addr);
565
memcpy(&m_SocketAddr, &s, sizeof(struct sockaddr_in));
570
void IpAddress::check4Mapped()
573
// TODO use this NOW to set the sin6_family properly on exporting. not on import.
577
IpAddress::IpAddress(struct sockaddr_in6 const &s)
583
IpAddress& IpAddress::operator =(struct sockaddr_in6 const &s)
585
memcpy(&m_SocketAddr, &s, sizeof(struct sockaddr_in6));
587
/* maintain address family properly */
594
IpAddress::IpAddress(struct in_addr const &s)
600
IpAddress& IpAddress::operator =(struct in_addr const &s)
603
Map4to6((const in_addr)s, m_SocketAddr.sin6_addr);
604
m_SocketAddr.sin6_family = AF_INET6;
608
memcpy(&m_SocketAddr.sin_addr, &s, sizeof(struct in_addr));
612
/* maintain stored family type properly */
620
IpAddress::IpAddress(struct in6_addr const &s)
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IpAddress& IpAddress::operator =(struct in6_addr const &s)
629
memcpy(&m_SocketAddr.sin6_addr, &s, sizeof(struct in6_addr));
630
m_SocketAddr.sin6_family = AF_INET6;
632
/* maintain address family type properly */
640
IpAddress::IpAddress(const IpAddress &s)
646
IpAddress::IpAddress(IpAddress *s)
650
memcpy(this, s, sizeof(IpAddress));
653
IpAddress::IpAddress(const struct hostent &s)
659
bool IpAddress::operator =(const struct hostent &s)
662
struct in_addr* ipv4 = NULL;
664
struct in6_addr* ipv6 = NULL;
667
// char *h_name; /* official name of host */
668
// char **h_aliases; /* alias list */
669
// int h_addrtype; /* host address type */
670
// int h_length; /* length of address */
671
// char **h_addr_list; /* list of addresses */
674
switch (s.h_addrtype) {
677
ipv4 = (in_addr*)(s.h_addr_list[0]);
683
ipv6 = (in6_addr*)(s.h_addr_list[0]);
689
debugs(14,1, HERE << "Discarded IPv6 Address. Protocol disabled.");
691
// FIXME see if there is another address in the list that might be usable ??
698
IASSERT("false",false);
705
IpAddress::IpAddress(const struct addrinfo &s)
711
bool IpAddress::operator =(const struct addrinfo &s)
714
struct sockaddr_in* ipv4 = NULL;
716
struct sockaddr_in6* ipv6 = NULL;
719
// int ai_flags; /* input flags */
720
// int ai_family; /* protocol family for socket */
721
// int ai_socktype; /* socket type */
722
// int ai_protocol; /* protocol for socket */
723
// socklen_t ai_addrlen; /* length of socket-address */
724
// struct sockaddr *ai_addr; /* socket-address for socket */
725
// char *ai_canonname; /* canonical name for service location */
726
// struct addrinfo *ai_next; /* pointer to next in list */
729
switch (s.ai_family) {
732
ipv4 = (sockaddr_in*)(s.ai_addr);
739
ipv6 = (sockaddr_in6*)(s.ai_addr);
746
debugs(14,1, HERE << "Discarded IPv6 Address. Protocol disabled.");
748
// see if there is another address in the list that might be usable ??
751
return operator=(*s.ai_next);
760
// attempt to handle partially initialised addrinfo.
761
// such as those where data only comes from getsockopt()
762
if (s.ai_addr != NULL) {
764
if (s.ai_addrlen == sizeof(struct sockaddr_in6)) {
765
operator=(*((struct sockaddr_in6*)s.ai_addr));
769
if (s.ai_addrlen == sizeof(struct sockaddr_in)) {
770
operator=(*((struct sockaddr_in*)s.ai_addr));
780
void IpAddress::GetAddrInfo(struct addrinfo *&dst, int force) const
786
memset(dst, 0, sizeof(struct addrinfo));
789
dst->ai_flags = AI_NUMERICHOST;
791
if (dst->ai_socktype == 0)
792
dst->ai_socktype = SOCK_STREAM;
794
if (dst->ai_socktype == SOCK_STREAM // implies TCP
795
&& dst->ai_protocol == 0)
796
dst->ai_protocol = IPPROTO_TCP;
798
if (dst->ai_socktype == SOCK_DGRAM // implies UDP
799
&& dst->ai_protocol == 0)
800
dst->ai_protocol = IPPROTO_UDP;
803
if ( force == AF_INET6 || (force == AF_UNSPEC && IsIPv6()) ) {
804
dst->ai_addr = (struct sockaddr*)new sockaddr_in6;
806
memset(dst->ai_addr,0,sizeof(struct sockaddr_in6));
808
GetSockAddr(*((struct sockaddr_in6*)dst->ai_addr));
810
dst->ai_addrlen = sizeof(struct sockaddr_in6);
812
dst->ai_family = ((struct sockaddr_in6*)dst->ai_addr)->sin6_family;
816
* Enable only if you must and please report to squid-dev if you find a need for this.
818
* Vista may need this to cope with dual-stack (unsetting IP6_V6ONLY).
819
* http://msdn.microsoft.com/en-us/library/ms738574(VS.85).aspx
820
* Linux appears to only do some things when its present.
822
* FreeBSD dies horribly when using dual-stack with it set.
823
* (43) Protocol not supported
825
dst->ai_protocol = IPPROTO_IPV6;
830
if ( force == AF_INET || (force == AF_UNSPEC && IsIPv4()) ) {
832
dst->ai_addr = (struct sockaddr*)new sockaddr_in;
834
memset(dst->ai_addr,0,sizeof(struct sockaddr_in));
836
GetSockAddr(*((struct sockaddr_in*)dst->ai_addr));
838
dst->ai_addrlen = sizeof(struct sockaddr_in);
840
dst->ai_family = ((struct sockaddr_in*)dst->ai_addr)->sin_family;
842
IASSERT("false",false);
846
void IpAddress::InitAddrInfo(struct addrinfo *&ai) const
850
memset(ai,0,sizeof(struct addrinfo));
853
// remove any existing data.
854
if (ai->ai_addr) delete ai->ai_addr;
856
ai->ai_addr = (struct sockaddr*)new sockaddr_in6;
857
memset(ai->ai_addr, 0, sizeof(struct sockaddr_in6));
859
ai->ai_addrlen = sizeof(struct sockaddr_in6);
863
void IpAddress::FreeAddrInfo(struct addrinfo *&ai) const
865
if (ai == NULL) return;
867
if (ai->ai_addr) delete ai->ai_addr;
873
// NP: name fields are NOT allocated at present.
879
int IpAddress::matchIPAddr(const IpAddress &rhs) const
882
uint8_t *l = (uint8_t*)m_SocketAddr.sin6_addr.s6_addr;
883
uint8_t *r = (uint8_t*)rhs.m_SocketAddr.sin6_addr.s6_addr;
885
uint8_t *l = (uint8_t*)&m_SocketAddr.sin_addr.s_addr;
886
uint8_t *r = (uint8_t*)&rhs.m_SocketAddr.sin_addr.s_addr;
889
// loop a byte-wise compare
890
// NP: match MUST be R-to-L : L-to-R produces inconsistent gt/lt results at varying CIDR
891
// expected difference on CIDR is gt/eq or lt/eq ONLY.
892
for (unsigned int i = 0 ; i < sizeof(m_SocketAddr.sin6_addr) ; i++) {
904
bool IpAddress::operator ==(const IpAddress &s) const
906
return (0 == matchIPAddr(s));
909
bool IpAddress::operator !=(const IpAddress &s) const
911
return ! ( operator==(s) );
914
bool IpAddress::operator <=(const IpAddress &rhs) const
916
if (IsAnyAddr() && !rhs.IsAnyAddr())
919
return (matchIPAddr(rhs) <= 0);
922
bool IpAddress::operator >=(const IpAddress &rhs) const
924
if (IsNoAddr() && !rhs.IsNoAddr())
927
return ( matchIPAddr(rhs) >= 0);
930
bool IpAddress::operator >(const IpAddress &rhs) const
932
if (IsNoAddr() && !rhs.IsNoAddr())
935
return ( matchIPAddr(rhs) > 0);
938
bool IpAddress::operator <(const IpAddress &rhs) const
940
if (IsNoAddr() && !rhs.IsNoAddr())
943
return ( matchIPAddr(rhs) < 0);
946
u_short IpAddress::GetPort() const
948
return ntohs( m_SocketAddr.sin6_port );
951
u_short IpAddress::SetPort(u_short prt)
953
m_SocketAddr.sin6_port = htons(prt);
959
* NtoA Given a buffer writes a readable ascii version of the IPA and/or port stored
961
* Buffer must be of a size large enough to hold the converted address.
962
* This size is provided in the form of a global defined variable MAX_IPSTRLEN
963
* Should a buffer shorter be provided the string result will be truncated
964
* at the length of the available buffer.
966
* A copy of the buffer is also returned for simple immediate display.
968
char* IpAddress::NtoA(char* buf, const unsigned int blen, int force) const
970
// Ensure we have a buffer.
975
/* some external code may have blindly memset a parent. */
976
/* thats okay, our default is known */
979
memcpy(buf,"::\0", min((const unsigned int)3,blen));
981
memcpy(buf,"0.0.0.0\0", min((const unsigned int)8,blen));
986
memset(buf,0,blen); // clear buffer before write
988
/* Pure-IPv6 CANNOT be displayed in IPv4 format. */
989
/* However IPv4 CAN. */
990
if ( force == AF_INET && !IsIPv4() ) {
992
memcpy(buf, "{!IPv4}\0", min((const unsigned int)8,blen));
998
if ( force == AF_INET6 || (force == AF_UNSPEC && IsIPv6()) ) {
1000
xinet_ntop(AF_INET6, &m_SocketAddr.sin6_addr, buf, blen);
1002
} else if ( force == AF_INET || (force == AF_UNSPEC && IsIPv4()) ) {
1006
xinet_ntop(AF_INET, &tmp, buf, blen);
1008
if ( force == AF_UNSPEC || (force == AF_INET && IsIPv4()) ) {
1009
xinet_ntop(AF_INET, &m_SocketAddr.sin_addr, buf, blen);
1012
debugs(14,0,"WARNING: Corrupt IP Address details OR required to display in unknown format (" <<
1013
force << "). accepted={" << AF_UNSPEC << "," << AF_INET << "," << AF_INET6 << "}");
1014
fprintf(stderr,"WARNING: Corrupt IP Address details OR required to display in unknown format (%d). accepted={%d,%d,%d} ",
1015
force, AF_UNSPEC, AF_INET, AF_INET6);
1016
memcpy(buf,"dead:beef::\0", min((const unsigned int)13,blen));
1023
unsigned int IpAddress::ToHostname(char *buf, const unsigned int blen) const {
1026
if (IsIPv6() && blen > 0) {
1031
/* 7 being space for [,], and port */
1033
NtoA(p, blen-7, AF_INET6);
1035
NtoA(p, blen-7, AF_INET);
1037
// find the end of the new string
1038
while (*p != '\0' && p < buf+blen)
1041
if (IsIPv6() && p < (buf+blen-1) ) {
1046
/* terminate just in case. */
1049
/* return size of buffer now used */
1053
char* IpAddress::ToURL(char* buf, unsigned int blen) const {
1056
// Ensure we have a buffer.
1062
p += ToHostname(p, blen);
1064
if (m_SocketAddr.sin6_port > 0 && p < (buf+blen-6) ) {
1065
/* 6 is max length of expected ':port' (short int) */
1066
snprintf(p, 6,":%d", GetPort() );
1069
// force a null-terminated string
1075
void IpAddress::GetSockAddr(struct sockaddr_storage &addr, const int family) const {
1076
struct sockaddr_in *sin = NULL;
1078
if ( family == AF_INET && !IsIPv4()) {
1079
// FIXME INET6: caller using the wrong socket type!
1080
debugs(14, DBG_CRITICAL, HERE << "IpAddress::GetSockAddr : Cannot convert non-IPv4 to IPv4. from " << *this);
1085
if ( family == AF_INET6 || (family == AF_UNSPEC && IsIPv6()) ) {
1086
struct sockaddr_in6 *ss6 = (struct sockaddr_in6*)&addr;
1088
} else if ( family == AF_INET || (family == AF_UNSPEC && IsIPv4()) ) {
1089
sin = (struct sockaddr_in*)&addr;
1092
IASSERT("false",false);
1094
#else /* not USE_IPV6 */
1095
sin = (struct sockaddr_in*)&addr;
1097
#endif /* USE_IPV6 */
1100
void IpAddress::GetSockAddr(struct sockaddr_in &buf) const {
1104
buf.sin_family = AF_INET;
1105
buf.sin_port = m_SocketAddr.sin6_port;
1106
Map6to4( m_SocketAddr.sin6_addr, buf.sin_addr);
1108
debugs(14, DBG_CRITICAL, HERE << "IpAddress::GetSockAddr : Cannot convert non-IPv4 to IPv4. from " << *this );
1110
memset(&buf,0xFFFFFFFF,sizeof(struct sockaddr_in));
1116
memcpy(&buf, &m_SocketAddr, sizeof(struct sockaddr_in));
1118
if (buf.sin_family == 0) {
1119
buf.sin_family = AF_INET;
1124
#if HAVE_SIN_LEN_IN_SAI
1125
/* not all OS have this field, BUT when they do it can be a problem if set wrong */
1126
buf.sin_len = sizeof(struct sockaddr_in);
1133
void IpAddress::GetSockAddr(struct sockaddr_in6 &buf) const {
1134
memcpy(&buf, &m_SocketAddr, sizeof(struct sockaddr_in6));
1135
/* maintain address family. It may have changed inside us. */
1136
buf.sin6_family = AF_INET6;
1138
#if HAVE_SIN6_LEN_IN_SAI
1139
/* not all OS have this field, BUT when they do it can be a problem if set wrong */
1140
buf.sin6_len = sizeof(struct sockaddr_in6);
1148
void IpAddress::Map4to6(const struct in_addr &in, struct in6_addr &out) const {
1149
/* check for special cases */
1151
if ( in.s_addr == 0x00000000) {
1154
memset(&out, 0, sizeof(struct in6_addr));
1155
} else if ( in.s_addr == 0xFFFFFFFF) {
1158
out.s6_addr32[0] = 0xFFFFFFFF;
1159
out.s6_addr32[1] = 0xFFFFFFFF;
1160
out.s6_addr32[2] = 0xFFFFFFFF;
1161
out.s6_addr32[3] = 0xFFFFFFFF;
1166
memset(&out, 0, sizeof(struct in6_addr));
1167
out.s6_addr32[2] = htonl(0xFFFF);
1168
out.s6_addr32[3] = in.s_addr;
1172
void IpAddress::Map6to4(const struct in6_addr &in, struct in_addr &out) const {
1177
memset(&out, 0, sizeof(struct in_addr));
1178
out.s_addr = in.s6_addr32[3];
1184
void IpAddress::GetInAddr(in6_addr &buf) const {
1185
memcpy(&buf, &m_SocketAddr.sin6_addr, sizeof(struct in6_addr));
1190
bool IpAddress::GetInAddr(struct in_addr &buf) const {
1194
Map6to4((const in6_addr)m_SocketAddr.sin6_addr, buf);
1200
memcpy(&buf, &m_SocketAddr.sin_addr, sizeof(struct in_addr));
1206
// non-compatible IPv6 Pure Address
1208
debugs(14,1, HERE << "IpAddress::GetInAddr : Cannot convert non-IPv4 to IPv4. IPA=" << *this);
1209
memset(&buf,0xFFFFFFFF,sizeof(struct in_addr));
added
removed
src/ip/IpAddress.cc
