bool IsIpAddress(const CStdString& address, bool allowNull)
{
if (GetIPV6LongForm(address) != _T(""))
return true;
int segment = 0;
int dotcount = 0;
for (int i = 0; i < address.GetLength(); ++i) {
const TCHAR& c = address[i];
if (c == '.') {
if (address[i + 1] == '.')
// Disallow multiple dots in a row
return false;
if (segment > 255)
return false;
if (!dotcount && !segment && !allowNull)
return false;
dotcount++;
segment = 0;
}
else if (c < '0' || c > '9')
return false;
segment = segment * 10 + c - '0';
}
if (dotcount != 3)
return false;
if (segment > 255)
return false;
return true;
}
bool IsIpAddress(const wxString& address)
{
if (!GetIPV6LongForm(address).empty())
return true;
int segment = 0;
int dotcount = 0;
for (size_t i = 0; i < address.Len(); ++i) {
wxChar const c = address[i];
if (c == '.') {
if (i + 1 < address.Len() && address[i + 1] == '.') {
// Disallow multiple dots in a row
return false;
}
if (segment > 255)
return false;
if (!dotcount && !segment)
return false;
dotcount++;
segment = 0;
}
else if (c < '0' || c > '9') {
return false;
}
else {
segment = segment * 10 + c - '0';
}
}
if (dotcount != 3)
return false;
if (segment > 255)
return false;
return true;
}
bool IsIpAddress(const wxString& address)
{
if (GetIPV6LongForm(address) != _T(""))
return true;
int segment = 0;
int dotcount = 0;
for (size_t i = 0; i < address.Len(); i++)
{
const char& c = address[i];
if (c == '.')
{
if (address[i + 1] == '.')
// Disallow multiple dots in a row
return false;
if (segment > 255)
return false;
if (!dotcount && !segment)
return false;
dotcount++;
segment = 0;
}
else if (c < '0' || c > '9')
return false;
segment = segment * 10 + c - '0';
}
if (dotcount != 3)
return false;
if (segment > 255)
return false;
return true;
}
bool IsRoutableAddress(const wxString& address, CSocket::address_family family)
{
if (family == CSocket::ipv6)
{
wxString long_address = GetIPV6LongForm(address);
if (long_address.size() != 39)
return false;
if (long_address[0] == '0')
{
// ::/128
if (long_address == _T("0000:0000:0000:0000:0000:0000:0000:0000"))
return false;
// ::1/128
if (long_address == _T("0000:0000:0000:0000:0000:0000:0000:0001"))
return false;
if (long_address.Left(30) == _T("0000:0000:0000:0000:0000:ffff:"))
{
// IPv4 mapped
wxString ipv4 = wxString::Format(_T("%d.%d.%d.%d"),
DigitHexToDecNum(long_address[30]) * 16 + DigitHexToDecNum(long_address[31]),
DigitHexToDecNum(long_address[32]) * 16 + DigitHexToDecNum(long_address[33]),
DigitHexToDecNum(long_address[35]) * 16 + DigitHexToDecNum(long_address[36]),
DigitHexToDecNum(long_address[37]) * 16 + DigitHexToDecNum(long_address[38]));
return IsRoutableAddress(ipv4, CSocket::ipv4);
}
return true;
}
if (long_address[0] == 'f')
{
if (long_address[1] == 'e')
{
// fe80::/10 (link local)
const wxChar& c = long_address[2];
int v;
if (c >= 'a')
v = c - 'a' + 10;
else
v = c - '0';
if ((v & 0xc) == 0x8)
return false;
return true;
}
else if (long_address[1] == 'c' || long_address[1] == 'd')
{
// fc00::/7 (site local)
return false;
}
}
return true;
}
else
{
// Assumes address is already a valid IP address
if (address.Left(3) == _T("127") ||
address.Left(3) == _T("10.") ||
address.Left(7) == _T("192.168") ||
address.Left(7) == _T("169.254"))
return false;
if (address.Left(3) == _T("172"))
{
wxString middle = address.Mid(4);
int pos = address.Find(_T("."));
wxASSERT(pos != -1);
long part;
middle.Left(pos).ToLong(&part);
if (part >= 16 && part <= 31)
return false;
}
return true;
}
}
void CIPAddressTest::testIPV6LongForm()
{
// Valid addresses
CPPUNIT_ASSERT(GetIPV6LongForm(_T("::1")) == _T("0000:0000:0000:0000:0000:0000:0000:0001"));
CPPUNIT_ASSERT(GetIPV6LongForm(_T("1234::1")) == _T("1234:0000:0000:0000:0000:0000:0000:0001"));
CPPUNIT_ASSERT(GetIPV6LongForm(_T("4::1")) == _T("0004:0000:0000:0000:0000:0000:0000:0001"));
CPPUNIT_ASSERT(GetIPV6LongForm(_T("1234:abcd::1234:ef01")) == _T("1234:abcd:0000:0000:0000:0000:1234:ef01"));
CPPUNIT_ASSERT(GetIPV6LongForm(_T("1234:ABCD::1234:ef01")) == _T("1234:abcd:0000:0000:0000:0000:1234:ef01"));
CPPUNIT_ASSERT(GetIPV6LongForm(_T("0:0:0:0:0:0:0:1")) == _T("0000:0000:0000:0000:0000:0000:0000:0001"));
CPPUNIT_ASSERT(GetIPV6LongForm(_T("0:0:0::0:0:0:0:1")) == _T("0000:0000:0000:0000:0000:0000:0000:0001"));
CPPUNIT_ASSERT(GetIPV6LongForm(_T("::0:0:0:0:0:0:0:1")) == _T("0000:0000:0000:0000:0000:0000:0000:0001"));
CPPUNIT_ASSERT(GetIPV6LongForm(_T("0000:0000:0000:0000:0000:0000:0000:0001")) == _T("0000:0000:0000:0000:0000:0000:0000:0001"));
CPPUNIT_ASSERT(GetIPV6LongForm(_T("[::1]")) == _T("0000:0000:0000:0000:0000:0000:0000:0001"));
CPPUNIT_ASSERT(GetIPV6LongForm(_T("[1234::1]")) == _T("1234:0000:0000:0000:0000:0000:0000:0001"));
CPPUNIT_ASSERT(GetIPV6LongForm(_T("[4::1]")) == _T("0004:0000:0000:0000:0000:0000:0000:0001"));
CPPUNIT_ASSERT(GetIPV6LongForm(_T("[1234:abcd::1234:ef01]")) == _T("1234:abcd:0000:0000:0000:0000:1234:ef01"));
CPPUNIT_ASSERT(GetIPV6LongForm(_T("[1234:ABCD::1234:ef01]")) == _T("1234:abcd:0000:0000:0000:0000:1234:ef01"));
CPPUNIT_ASSERT(GetIPV6LongForm(_T("[0:0:0:0:0:0:0:1]")) == _T("0000:0000:0000:0000:0000:0000:0000:0001"));
CPPUNIT_ASSERT(GetIPV6LongForm(_T("[0:0:0::0:0:0:0:1]")) == _T("0000:0000:0000:0000:0000:0000:0000:0001"));
CPPUNIT_ASSERT(GetIPV6LongForm(_T("[::0:0:0:0:0:0:0:1]")) == _T("0000:0000:0000:0000:0000:0000:0000:0001"));
CPPUNIT_ASSERT(GetIPV6LongForm(_T("[0000:0000:0000:0000:0000:0000:0000:0001]")) == _T("0000:0000:0000:0000:0000:0000:0000:0001"));
// Invalid ones
CPPUNIT_ASSERT(GetIPV6LongForm(_T("::")) == _T(""));
CPPUNIT_ASSERT(GetIPV6LongForm(_T(":::")) == _T(""));
CPPUNIT_ASSERT(GetIPV6LongForm(_T("1234:abcd::1234::ef01")) == _T(""));
CPPUNIT_ASSERT(GetIPV6LongForm(_T("[1234:abcd::1234::ef01")) == _T(""));
CPPUNIT_ASSERT(GetIPV6LongForm(_T("1234:abcd::1234::ef01]")) == _T(""));
CPPUNIT_ASSERT(GetIPV6LongForm(_T("[[1234:abcd::1234::ef01]]")) == _T(""));
CPPUNIT_ASSERT(GetIPV6LongForm(_T("1234:abcde:1234::ef01")) == _T(""));
CPPUNIT_ASSERT(GetIPV6LongForm(_T("1234:abcg:1234::ef01")) == _T(""));
CPPUNIT_ASSERT(GetIPV6LongForm(_T(":::1")) == _T(""));
CPPUNIT_ASSERT(GetIPV6LongForm(_T("0:0:0:0:0:0:0:1:2")) == _T(""));
CPPUNIT_ASSERT(GetIPV6LongForm(_T("0:0:0:0:0:0:0:1:2:0:0:0:0:0:0:1:2")) == _T(""));
CPPUNIT_ASSERT(GetIPV6LongForm(_T("0::0:0:0:0:0:0:1:2:0:0:0:0:0:0:1")) == _T(""));
}
CStdString GetIPV6ShortForm(const CStdString& ip)
{
// This could be optimized a lot.
// First get the long form in a well-known format
CStdString l = GetIPV6LongForm(ip);
if (l.IsEmpty())
return CStdString();
LPCTSTR p = l;
TCHAR outbuf[42];
*outbuf = ':';
TCHAR* out = outbuf + 1;
bool segmentStart = true;
bool readLeadingZero = false;
while (*p)
{
switch (*p)
{
case ':':
if (readLeadingZero)
*(out++) = '0';
*out++ = ':';
readLeadingZero = false;
segmentStart = true;
break;
case '0':
if (segmentStart)
readLeadingZero = true;
else
{
*out++ = '0';
readLeadingZero = false;
}
break;
default:
readLeadingZero = false;
segmentStart = false;
*out++ = *p;
break;
}
++p;
}
*(out++) = ':';
*out = 0;
// Replace longest run of consecutive zeroes
CStdString shortIp(outbuf);
CStdString s = _T(":0:0:0:0:0:0:0:0:");
while (s.GetLength() > 2)
{
int pos = shortIp.Find(s);
if (pos != -1)
{
shortIp = shortIp.Left( pos + 1 ) + shortIp.Mid(pos + s.GetLength() -1);
break;
}
s = s.Mid(2);
}
shortIp.Replace(_T(":::"), _T("::"));
if (shortIp[0] == ':' && shortIp[1] != ':')
shortIp = shortIp.Mid(1);
if (shortIp.GetLength() >= 2 && shortIp[shortIp.GetLength()-1] == ':' && shortIp[shortIp.GetLength()-2] != ':')
shortIp = shortIp.Left(shortIp.GetLength()-1);
return shortIp;
}
bool IsRoutableAddress(const CStdString& address)
{
if (address.Find(_T(":")) != -1)
{
CStdString long_address = GetIPV6LongForm(address);
if (long_address.IsEmpty())
return false;
if (long_address[0] == '0')
{
// ::/128
if (long_address == _T("0000:0000:0000:0000:0000:0000:0000:0000"))
return false;
// ::1/128
if (long_address == _T("0000:0000:0000:0000:0000:0000:0000:0001"))
return false;
if (long_address.Left(30) == _T("0000:0000:0000:0000:0000:ffff:"))
{
// IPv4 mapped
CStdString ipv4;
ipv4.Format(_T("%d.%d.%d.%d"),
DigitHexToDecNum(long_address[30]) * 16 + DigitHexToDecNum(long_address[31]),
DigitHexToDecNum(long_address[32]) * 16 + DigitHexToDecNum(long_address[33]),
DigitHexToDecNum(long_address[35]) * 16 + DigitHexToDecNum(long_address[36]),
DigitHexToDecNum(long_address[37]) * 16 + DigitHexToDecNum(long_address[38]));
return IsRoutableAddress(ipv4);
}
return true;
}
if (long_address[0] == 'f')
{
if (long_address[1] == 'e')
{
// fe80::/10 (link local)
const TCHAR& c = long_address[2];
int v;
if (c >= 'a')
v = c - 'a' + 10;
else
v = c - '0';
if ((v & 0xc) == 0x8)
return false;
return true;
}
else if (long_address[1] == 'c' || long_address[1] == 'd')
{
// fc00::/7 (site local)
return false;
}
}
return true;
}
else
{
// Assumes address is already a valid IP address
if (address.Left(3) == _T("127") ||
address.Left(3) == _T("10.") ||
address.Left(7) == _T("192.168") ||
address.Left(7) == _T("169.254"))
return false;
if (address.Left(3) == _T("172"))
{
CStdString middle = address.Mid(4);
int pos = address.Find(_T("."));
if (pos == -1)
return false;
int part = _ttoi(middle.Left(pos));
if (part >= 16 && part <= 31)
return false;
}
return true;
}
}
bool MatchesFilter(CStdString filter, CStdString ip)
{
// A single asterix matches all IPs.
if (filter == _T("*"))
return true;
// Check for IP range syntax.
int pos = filter.Find('/');
if (pos != -1)
{
// CIDR filter
int prefixLength = _ttoi(filter.Mid(pos+1));
if (ip.Find(':') != -1)
{
// IPv6 address
CStdString left = GetIPV6LongForm(filter.Left(pos));
if (left.Find(':') == -1)
return false;
ip = GetIPV6LongForm(ip);
LPCTSTR i = ip;
LPCTSTR f = left;
while (prefixLength >= 4)
{
if (*i != *f)
return false;
if (!*i)
return true;
if (*i == ':')
{
++i;
++f;
}
++i;
++f;
prefixLength -= 4;
}
if (!prefixLength)
return true;
int mask;
if (prefixLength == 1)
mask = 0x8;
else if (prefixLength == 2)
mask = 0xc;
else
mask = 0xe;
return (DigitHexToDecNum(*i) & mask) == (DigitHexToDecNum(*f) & mask);
}
else
{
if (prefixLength < 0)
prefixLength = 0;
else if (prefixLength > 32)
prefixLength = 32;
// IPv4 address
CStdString left = filter.Left(pos);
if (left.Find(':') != -1)
return false;
unsigned long i = ntohl(inet_addr(ConvToLocal(ip)));
unsigned long f = ntohl(inet_addr(ConvToLocal(left)));
i &= prefixMasksV4[prefixLength];
f &= prefixMasksV4[prefixLength];
return i == f;
}
}
else
{
// Literal filter
if (filter.Find(':') != -1)
return filter == GetIPV6ShortForm(ip);
else
return filter == ip;
}
}
void CExternalIPResolver::OnData(char* buffer, unsigned int len)
{
if (buffer)
{
unsigned int i;
for (i = 0; i < len; i++)
{
if (buffer[i] == '\r' || buffer[i] == '\n')
break;
if (buffer[i] & 0x80)
{
Close(false);
return;
}
}
if (i)
m_data += wxString(buffer, wxConvLocal, i);
if (i == len)
return;
}
if (m_protocol == CSocket::ipv6)
{
if (m_data[0] == '[')
{
if (m_data.Last() != ']')
{
Close(false);
return;
}
m_data.RemoveLast();
m_data = m_data.Mid(1);
}
if (GetIPV6LongForm(m_data).IsEmpty())
{
Close(false);
return;
}
m_ip = m_data;
}
else
{
// Validate ip address
wxString digit = _T("0*[0-9]{1,3}");
const wxChar* dot = _T("\\.");
wxString exp = _T("(^|[^\\.[:digit:]])(") + digit + dot + digit + dot + digit + dot + digit + _T(")([^\\.[:digit:]]|$)");
wxRegEx regex;
regex.Compile(exp);
if (!regex.Matches(m_data))
{
Close(false);
return;
}
m_ip = regex.GetMatch(m_data, 2);
}
Close(true);
}
