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tdelibs/tdecore/ksockaddr.cpp

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/*
* This file is part of the KDE libraries
* Copyright (C) 2000-2002 Thiago Macieira <thiago.macieira@kdemail.net>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
**/
#include "ksockaddr.h"
#include <config.h>
#include <sys/types.h>
#ifdef Q_OS_UNIX
#include <arpa/inet.h>
#endif
#include <netinet/in.h>
#include <limits.h>
#include <stdlib.h>
#include <string.h>
#include <sys/un.h>
#include <unistd.h>
#include <tqglobal.h>
#include <tqfile.h>
#include "kdebug.h"
#include "klocale.h"
//#include "kextsock.h"
#ifndef HAVE_STRUCT_SOCKADDR_IN6
// The system doesn't have sockaddr_in6
// But we can tell netsupp.h to define it for us, according to the RFC
#define CLOBBER_IN6
#endif
#include "netsupp.h"
#define V6_CAN_CONVERT_TO_V4(addr) (KDE_IN6_IS_ADDR_V4MAPPED(addr) || KDE_IN6_IS_ADDR_V4COMPAT(addr))
#ifdef HAVE_STRUCT_SOCKADDR_SA_LEN
# define MY_MAX(a, b) ((a) > (b) ? (a) : (b))
# define MIN_SOCKADDR_LEN MY_MAX(offsetof(sockaddr, sa_family) + sizeof(((sockaddr*)0)->sa_family), \
offsetof(sockaddr, sa_len) + sizeof(((sockaddr*)0)->sa_len))
#else
# define MIN_SOCKADDR_LEN (offsetof(sockaddr, sa_family) + sizeof(((sockaddr*)0)->sa_family))
#endif
// Minimum size accepted for sockaddr_in6 sockets.
// The scopeid field is missing from some implementations
// that conform to the obsoleted RFC 2133, e.g. Linux glibc 2.1
#define MIN_SOCKADDR_IN6_LEN (offsetof(sockaddr_in6, sin6_addr) + sizeof(((sockaddr_in6*)0)->sin6_addr))
#ifdef offsetof
#undef offsetof
#endif
#define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
// This is how it is
// 46 == strlen("1234:5678:9abc:def0:1234:5678:255.255.255.255")
#ifndef INET6_ADDRSTRLEN
#define INET6_ADDRSTRLEN 46
#endif
/**
* Class KSocketAddress
*/
KSocketAddress::KSocketAddress(const sockaddr* sa, ksocklen_t size)
{
if ( !sa )
init();
else {
data = (sockaddr*)malloc(size);
if (data == NULL)
return;
memcpy(data, sa, size);
datasize = size;
owndata = true;
}
}
void KSocketAddress::init()
{
data = NULL;
datasize = 0;
owndata = false;
}
KSocketAddress::~KSocketAddress()
{
if (owndata && data != NULL)
free(data);
}
TQString KSocketAddress::pretty() const
{
return i18n("<unknown socket>");
}
int KSocketAddress::family() const
{
if (data != NULL)
return data->sa_family;
return AF_UNSPEC;
}
// This creates a new KSocketAddress with given sockaddr
KSocketAddress* KSocketAddress::newAddress(const struct sockaddr* sa, ksocklen_t size)
{
if (size == 0)
{
kdWarning() << "KSocketAddress::newAddress called with size = 0!\n";
return NULL;
}
// make sure we have the right stuff
if (size < MIN_SOCKADDR_LEN)
{
kdWarning() << "KSocketAddress::newAddress called with invalid size\n";
return NULL;
}
switch (sa->sa_family)
{
case AF_INET:
if (size >= sizeof(sockaddr_in))
return new KInetSocketAddress((const sockaddr_in*)sa, size);
return NULL;
#ifdef AF_INET6
case AF_INET6:
if (size >= MIN_SOCKADDR_IN6_LEN)
return new KInetSocketAddress((const sockaddr_in6*)sa, size);
return NULL;
#endif
case AF_UNIX: // AF_LOCAL
return new KUnixSocketAddress((const sockaddr_un*)sa, size);
}
return new KSocketAddress(sa, size);
}
bool KSocketAddress::isEqual(const KSocketAddress& other) const
{
switch(family())
{
case AF_INET:
return KInetSocketAddress::areEqualInet(*this, other, false);
#ifdef AF_INET6
case AF_INET6:
return KInetSocketAddress::areEqualInet6(*this, other, false);
#endif
case AF_UNIX: // AF_LOCAL
return KUnixSocketAddress::areEqualUnix(*this, other, false);
}
// This is not a known socket type
if (other.datasize != datasize)
return false; // can't be equal
return memcmp(data, other.data, datasize) == 0;
}
bool KSocketAddress::isCoreEqual(const KSocketAddress& other) const
{
switch(family())
{
case AF_INET:
return KInetSocketAddress::areEqualInet(*this, other, true);
#ifdef AF_INET6
case AF_INET6:
return KInetSocketAddress::areEqualInet6(*this, other, true);
#endif
case AF_UNIX: // AF_LOCAL
return KUnixSocketAddress::areEqualUnix(*this, other, true);
}
return false;
}
TQString KSocketAddress::nodeName() const
{
return TQString::null;
}
TQString KSocketAddress::serviceName() const
{
return TQString::null;
}
int KSocketAddress::ianaFamily(int af)
{
switch (af)
{
case AF_INET:
return 1;
#ifdef AF_INET6
case AF_INET6:
return 2;
#endif
default:
return 0;
}
}
int KSocketAddress::fromIanaFamily(int iana)
{
switch (iana)
{
case 1:
return AF_INET;
#ifdef AF_INET6
case 2:
return AF_INET6;
#endif
default:
return AF_UNSPEC;
}
}
/**
* class KInetSocketAddress
*/
class KInetSocketAddressPrivate
{
public:
int sockfamily;
sockaddr_in sin;
#ifdef AF_INET6
sockaddr_in6 sin6;
#endif
KInetSocketAddressPrivate() :
sockfamily(AF_UNSPEC)
{
sin.sin_family = AF_INET;
sin.sin_port = 0;
#ifdef HAVE_STRUCT_SOCKADDR_SA_LEN
sin.sin_len = sizeof(sin);
#endif
#ifdef AF_INET6
sin6.sin6_family = AF_INET6;
sin6.sin6_port = 0;
sin6.sin6_flowinfo = 0;
# ifdef HAVE_STRUCT_SOCKADDR_IN6_SIN6_SCOPE_ID
sin6.sin6_scope_id = 0;
# endif
# ifdef HAVE_STRUCT_SOCKADDR_SA_LEN
sin6.sin6_len = sizeof(sin6);
# endif
#endif
}
};
KInetSocketAddress::KInetSocketAddress() :
d(new KInetSocketAddressPrivate)
{
}
KInetSocketAddress::KInetSocketAddress(const KInetSocketAddress &other) :
KSocketAddress(), d(new KInetSocketAddressPrivate)
{
setAddress(other);
}
KInetSocketAddress::KInetSocketAddress(const sockaddr_in* sin, ksocklen_t len) :
d(new KInetSocketAddressPrivate)
{
setAddress(sin, len);
}
KInetSocketAddress::KInetSocketAddress(const sockaddr_in6* sin6, ksocklen_t len) :
d(new KInetSocketAddressPrivate)
{
setAddress(sin6, len);
}
KInetSocketAddress::KInetSocketAddress(const in_addr& addr, unsigned short port) :
d(new KInetSocketAddressPrivate)
{
setAddress(addr, port);
}
KInetSocketAddress::KInetSocketAddress(const in6_addr& addr, unsigned short port) :
d(new KInetSocketAddressPrivate)
{
setAddress(addr, port);
}
KInetSocketAddress::KInetSocketAddress(const TQString& addr, unsigned short port, int family) :
d(new KInetSocketAddressPrivate)
{
setAddress(addr, port, family);
}
KInetSocketAddress::~KInetSocketAddress()
{
delete d;
// KSocketAddress::~KSocketAddress();
}
bool KInetSocketAddress::setAddress(const KInetSocketAddress &other)
{
if (other.family() == AF_INET)
return setAddress(other.addressV4(), other.size());
#ifdef AF_INET6
else if (other.family() == AF_INET6)
return setAddress(other.addressV6(), other.size());
#endif
return false;
}
bool KInetSocketAddress::setAddress(const sockaddr_in* sin, ksocklen_t len)
{
// This is supposed to be a AF_INET socket
if ((len < sizeof(sockaddr_in)) || (sin->sin_family != AF_INET))
{
kdWarning() << "KInetSocketAddress::setAddress(sockaddr_in*) called with invalid sockaddr_in\n";
return false;
}
return setHost(sin->sin_addr) && setPort(ntohs(sin->sin_port));
}
bool KInetSocketAddress::setAddress(const sockaddr_in6* sin6, ksocklen_t len)
{
#ifdef AF_INET6
// should be family AF_INET6
if ((len < MIN_SOCKADDR_IN6_LEN) || (sin6->sin6_family != AF_INET6))
{
kdWarning() << "KInetSocketAddress::setAddress(sockaddr_in6*) called with invalid sockaddr_in6\n";
return 0;
}
memset(&d->sin6, 0, sizeof(d->sin6));
if (len > sizeof(d->sin6))
len = sizeof(d->sin6);
memcpy(&d->sin6, sin6, len);
/* Now make a sanity check */
d->sockfamily = d->sin6.sin6_family = AF_INET6;
# ifdef HAVE_STRUCT_SOCKADDR_SA_LEN
d->sin6.sin6_len = sizeof(d->sin6);
# endif
fromV6();
return true;
#else // !AF_INET6
return false;
#endif
}
bool KInetSocketAddress::setAddress(const in_addr& addr, unsigned short port)
{
return setHost(addr) && setPort(port);
}
bool KInetSocketAddress::setAddress(const in6_addr& addr, unsigned short port)
{
return setHost(addr) && setPort(port);
}
bool KInetSocketAddress::setAddress(const TQString& addr, unsigned short port, int family)
{
return setHost(addr, family) && setPort(port);
}
bool KInetSocketAddress::setHost(const in_addr& addr)
{
d->sockfamily = AF_INET; // set address to IPv4 type
d->sin.sin_addr = addr;
fromV4();
return true;
}
bool KInetSocketAddress::setHost(const in6_addr& addr)
{
#ifdef AF_INET6
d->sockfamily = AF_INET6; // set address to IPv6 type
d->sin6.sin6_addr = addr;
fromV6();
return true;
#else
return false;
#endif
}
bool KInetSocketAddress::setHost(const TQString& addr, int family)
{
// if family == -1, we'll try to guess the host name
if ((family != -1) && (family != AF_INET)
#ifdef AF_INET6
&& (family != AF_INET6)
#endif
)
{
kdWarning() << "KInetSocketAddress::setHost(TQString, int) called with unknown family address\n";
return false;
}
if (family == -1)
{
// guess the family type
#ifdef AF_INET6
// IPv6 addresses MUST contain colons (:) and IPv4 addresses must not
if (addr.find(':') != -1)
family = AF_INET6;
else
family = AF_INET;
#else
// There's only one guess:
family = AF_INET;
#endif
}
/*
* FIXME! What is the decoding process for hostnames?
*/
if (family == AF_INET)
{
inet_pton(family, addr.latin1(), (void*)&(d->sin.sin_addr));
fromV4();
}
#ifdef AF_INET6
else
{
inet_pton(family, addr.latin1(), (void*)&(d->sin6.sin6_addr));
fromV6();
}
#endif
d->sockfamily = family;
return true;
}
bool KInetSocketAddress::setPort(unsigned short port)
{
// set port on all socket types
d->sin.sin_port = htons(port);
#ifdef AF_INET6
d->sin6.sin6_port = htons(port);
#endif
return true;
}
bool KInetSocketAddress::setFamily(int _family)
{
if (_family != AF_INET
#ifdef AF_INET6
&& _family != AF_INET6
#endif
)
{
kdWarning() << "KInetSocketAddress::setFamily(int) called with unknown family\n";
return false;
}
d->sockfamily = _family;
if (_family == AF_INET)
fromV4();
#ifdef AF_INET6
else if (_family == AF_INET6)
fromV6();
#endif
return true;
}
bool KInetSocketAddress::setFlowinfo(TQ_UINT32 flowinfo)
{
#ifdef AF_INET6
if (d->sockfamily == AF_INET6)
{
d->sin6.sin6_flowinfo = flowinfo;
return true;
}
#endif
return false;
}
bool KInetSocketAddress::setScopeId(int scopeid)
{
#if defined(AF_INET6) && defined(HAVE_STRUCT_SOCKADDR_IN6_SIN6_SCOPE_ID)
if (d->sockfamily == AF_INET6)
{
d->sin6.sin6_scope_id = scopeid;
return true;
}
#endif
(void)scopeid;
return false;
}
const sockaddr_in* KInetSocketAddress::addressV4() const
{
if (d->sockfamily == AF_INET)
return &d->sin;
#ifdef AF_INET6
else if (d->sockfamily == AF_INET6)
{
// check if this IPv6 address was converted without loss
if (V6_CAN_CONVERT_TO_V4(&d->sin6.sin6_addr))
return &d->sin;
else
return NULL; // there was loss, so return nothing
}
#endif
kdWarning() << "KInetSocketAddress::addressV4() called on uninitialized socket\n";
return NULL;
}
const sockaddr_in6* KInetSocketAddress::addressV6() const
{
#ifdef AF_INET6
return &d->sin6;
#else
return NULL;
#endif
}
in_addr KInetSocketAddress::hostV4() const
{
// this might be empty
return d->sin.sin_addr;
}
/*
* ATTENTION
* This function is left undefined if no IPv6 support exists
* This is intentional
*/
#ifdef AF_INET6
in6_addr KInetSocketAddress::hostV6() const
{
return d->sin6.sin6_addr;
}
#endif
TQString KInetSocketAddress::pretty() const
{
if (d->sockfamily != AF_INET
#ifdef AF_INET6
&& d->sockfamily != AF_INET6
#endif
)
{
kdWarning() << "KInetSocketAddress::pretty() called on uninitialized class\n";
return i18n("<empty>");
}
return i18n("1: hostname, 2: port number", "%1 port %2").arg(nodeName()).arg(serviceName());
}
TQString KInetSocketAddress::nodeName() const
{
char buf[INET6_ADDRSTRLEN]; // INET6_ADDRSTRLEN > INET_ADDRSTRLEN
if (d->sockfamily == AF_INET)
inet_ntop(d->sockfamily, (void*)&d->sin.sin_addr, buf, sizeof(buf));
#ifdef AF_INET6
else if (d->sockfamily == AF_INET6)
inet_ntop(d->sockfamily, (void*)&d->sin6.sin6_addr, buf, sizeof(buf));
#endif
else
{
kdWarning() << "KInetSocketAddress::nodeName() called on uninitialized class\n";
return i18n("<empty>");
}
return TQString::tqfromLatin1(buf); // FIXME! What's the encoding?
}
TQString KInetSocketAddress::serviceName() const
{
return TQString::number(port());
}
unsigned short KInetSocketAddress::port() const
{
#ifdef AF_INET6
// we prefer sin6 here because fromV6() might make sin.sin_port be 0
return ntohs(d->sin6.sin6_port);
#else
return ntohs(d->sin.sin_port);
#endif
}
TQ_UINT32 KInetSocketAddress::flowinfo() const
{
#ifdef AF_INET6
if (d->sockfamily == AF_INET6)
return (TQ_UINT32)d->sin6.sin6_flowinfo;
#endif
return 0;
}
ksocklen_t KInetSocketAddress::size() const
{
if (d->sockfamily == AF_INET)
return sizeof(d->sin);
#ifdef AF_INET6
else if (d->sockfamily == AF_INET6)
return sizeof(d->sin6);
#endif
else
return 0;
}
bool KInetSocketAddress::areEqualInet(const KSocketAddress &s1, const KSocketAddress &s2, bool coreOnly)
{
if (s1.family() != s2.family())
return false;
if ((s1.size() < sizeof(sockaddr_in)) || (s2.size() < sizeof(sockaddr_in)))
return false;
struct sockaddr_in *sin1 = (sockaddr_in *) s1.address();
struct sockaddr_in *sin2 = (sockaddr_in *) s2.address();
if (coreOnly)
return (memcmp(&sin1->sin_addr, &sin2->sin_addr, sizeof(struct in_addr)) == 0);
else
return (sin1->sin_port == sin2->sin_port) &&
(memcmp(&sin1->sin_addr, &sin2->sin_addr, sizeof(struct in_addr)) == 0);
}
bool KInetSocketAddress::areEqualInet6(const KSocketAddress &s1, const KSocketAddress &s2, bool coreOnly)
{
#ifdef AF_INET6
if (s1.family() != s2.family())
return false;
if ((s1.size() < sizeof(sockaddr_in6)) || (s2.size() < sizeof(sockaddr_in6)))
return false;
struct sockaddr_in6 *sin1 = (sockaddr_in6 *) s1.address();
struct sockaddr_in6 *sin2 = (sockaddr_in6 *) s2.address();
if (coreOnly)
return (memcmp(&sin1->sin6_addr, &sin2->sin6_addr, sizeof(struct in6_addr)) == 0);
else
return (sin1->sin6_port == sin2->sin6_port) &&
(sin1->sin6_flowinfo == sin2->sin6_flowinfo) &&
#ifdef HAVE_STRUCT_SOCKADDR_IN6_SIN6_SCOPE_ID
(sin1->sin6_scope_id == sin2->sin6_scope_id) &&
#endif
(memcmp(&sin1->sin6_addr, &sin2->sin6_addr, sizeof(struct in6_addr)) == 0);
#else
return false;
#endif
}
void KInetSocketAddress::fromV4()
{
// converts an address from v4
#ifdef AF_INET6
d->sin6.sin6_port = d->sin.sin_port;
// Make this a v4-mapped address
((TQ_UINT32*)&d->sin6.sin6_addr)[0] = ((TQ_UINT32*)&d->sin6.sin6_addr)[1] = 0;
((TQ_UINT32*)&d->sin6.sin6_addr)[2] = htonl(0xffff);
((TQ_UINT32*)&d->sin6.sin6_addr)[3] = *(TQ_UINT32*)&d->sin.sin_addr;
// Clear flowinfo and scopeid
d->sin6.sin6_flowinfo = 0;
# ifdef HAVE_STRUCT_SOCKADDR_IN6_SIN6_SCOPE_ID
d->sin6.sin6_scope_id = 0;
# endif
#endif
// data == KSocketAddress::data
data = (sockaddr*)&d->sin;
datasize = sizeof( sockaddr_in );
}
void KInetSocketAddress::fromV6()
{
#ifdef AF_INET6
// convert to v4 only if this is a v4-mapped or v4-compat address
if (V6_CAN_CONVERT_TO_V4(&d->sin6.sin6_addr))
{
d->sin.sin_port = d->sin6.sin6_port;
*(TQ_UINT32*)&d->sin.sin_addr = ((TQ_UINT32*)&d->sin6.sin6_addr)[3];
}
else
{
d->sin.sin_port = 0;
memset(&d->sin.sin_addr, 0, sizeof(d->sin.sin_addr));
}
data = (sockaddr*)&d->sin6;
datasize = sizeof( d->sin6 );
#endif
}
TQString KInetSocketAddress::addrToString(int family, const void* addr)
{
char buf[INET6_ADDRSTRLEN+1];
return TQString::tqfromLatin1(inet_ntop(family, addr, buf, INET6_ADDRSTRLEN));
}
bool KInetSocketAddress::stringToAddr(int family, const char *text, void *dest)
{
return inet_pton(family, text, dest) != 0;
}
/**
* class KUnixSocketAddress
*/
class KUnixSocketAddressPrivate
{
public:
sockaddr_un *m_sun;
KUnixSocketAddressPrivate() : m_sun(NULL)
{ }
};
KUnixSocketAddress::KUnixSocketAddress() :
d(new KUnixSocketAddressPrivate)
{
}
KUnixSocketAddress::KUnixSocketAddress(const sockaddr_un* _sun, ksocklen_t size) :
d(new KUnixSocketAddressPrivate)
{
setAddress(_sun, size);
}
KUnixSocketAddress::KUnixSocketAddress(TQCString pathname) :
d(new KUnixSocketAddressPrivate)
{
setAddress(pathname);
}
KUnixSocketAddress::~KUnixSocketAddress()
{
delete d;
}
bool KUnixSocketAddress::setAddress(const sockaddr_un* _sun, ksocklen_t _size)
{
if (_sun->sun_family != AF_UNIX)
{
kdWarning() << "KUnixSocketAddress::setAddress called with invalid socket\n";
return false;
}
if (owndata && (d->m_sun != NULL) && (datasize >= _size))
{
// reuse this without reallocating
memcpy(d->m_sun, _sun, _size);
}
else
{
if (owndata && (d->m_sun != NULL))
free(d->m_sun);
d->m_sun = (sockaddr_un*)malloc(_size);
if (d->m_sun == NULL)
{
// problems
owndata = false;
return false;
}
memcpy(d->m_sun, _sun, _size);
}
datasize = _size;
data = (sockaddr*)d->m_sun;
owndata = true;
#ifdef HAVE_STRUCT_SOCKADDR_SA_LEN
data->sa_len = _size;
#endif
return 1;
}
bool KUnixSocketAddress::setAddress(TQCString path)
{
// the +1 is necessary for the ending zero
ksocklen_t newsize = offsetof(sockaddr_un, sun_path) + path.length() + 1;
if (owndata && (d->m_sun != NULL) && (datasize >= newsize))
{
// we can reuse this
strcpy(d->m_sun->sun_path, path);
#ifdef HAVE_STRUCT_SOCKADDR_SA_LEN
data->sa_len = newsize;
#endif
return true;
}
// nah, we have to do better
if (owndata && (d->m_sun != NULL))
free(d->m_sun);
d->m_sun = (sockaddr_un*) malloc(newsize);
if (d->m_sun == NULL)
{
owndata = false;
return false;
}
d->m_sun->sun_family = AF_UNIX;
strcpy(d->m_sun->sun_path, path);
data = (sockaddr*)d->m_sun;
datasize = newsize;
#ifdef HAVE_STRUCT_SOCKADDR_SA_LEN
data->sa_len = newsize;
#endif
return 1;
}
TQCString KUnixSocketAddress::pathname() const
{
if (d->m_sun != NULL)
{
if (datasize > offsetof(sockaddr_un, sun_path))
return d->m_sun->sun_path;
return "";
}
return TQCString(0);
}
TQString KUnixSocketAddress::pretty() const
{
TQCString pname = pathname();
if (pname.isEmpty())
return i18n("<empty UNIX socket>");
return TQFile::decodeName(pathname());
}
TQString KUnixSocketAddress::serviceName() const
{
return TQString::fromUtf8(pathname());
}
const sockaddr_un* KUnixSocketAddress::address() const
{
return d->m_sun;
}
bool KUnixSocketAddress::areEqualUnix(const KSocketAddress &s1, const KSocketAddress &s2, bool /* coreOnly */)
{
if (s1.family() != s2.family())
return false;
if ((s1.size() < MIN_SOCKADDR_LEN) || (s2.size() < MIN_SOCKADDR_LEN))
return false;
struct sockaddr_un *sun1 = (sockaddr_un *) s1.address();
struct sockaddr_un *sun2 = (sockaddr_un *) s2.address();
if (s1.size() == MIN_SOCKADDR_LEN && s2.size() == MIN_SOCKADDR_LEN)
return true; // unnamed Unix sockets
return (strcmp(sun1->sun_path, sun2->sun_path) == 0);
}
void KSocketAddress::virtual_hook( int, void* )
{ /*BASE::virtual_hook( id, data );*/ }
void KInetSocketAddress::virtual_hook( int id, void* data )
{ KSocketAddress::virtual_hook( id, data ); }
void KUnixSocketAddress::virtual_hook( int id, void* data )
{ KSocketAddress::virtual_hook( id, data ); }
#include "ksockaddr.moc"
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