LBRYCommunity/lbrycrd
1
0
Fork 0
Code Issues 29 Pull requests 1 Projects Releases 32 Packages Wiki Activity

Merge pull request #290 from jrmithdobbs/ip-filter-rfc1918-rfc3927

Browse source 
Fix rfc1918 and rfc3927 compliance for ignoring non-internet-routable hosts
This commit is contained in:
Jeff Garzik 2011-06-05 07:30:05 -07:00
commit 39105dac1b
2 changed files with 21 additions and 6 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

3
src/net.cpp
View file

@ -88,8 +88,7 @@ bool ConnectSocket(const CAddress& addrConnect, SOCKET& hSocketRet)
setsockopt(hSocket, SOL_SOCKET, SO_NOSIGPIPE, (void*)&set, sizeof(int));
#endif
bool fRoutable = !(addrConnect.GetByte(3) == 10 || (addrConnect.GetByte(3) == 192 && addrConnect.GetByte(2) == 168));
bool fProxy = (fUseProxy && fRoutable);
bool fProxy = (fUseProxy && addrConnect.IsRoutable());
struct sockaddr_in sockaddr = (fProxy ? addrProxy.GetSockAddr() : addrConnect.GetSockAddr());
if (connect(hSocket, (struct sockaddr*)&sockaddr, sizeof(sockaddr)) == SOCKET_ERROR)

24
src/net.h
View file

@ -283,13 +283,29 @@ public:
return (memcmp(pchReserved, pchIPv4, sizeof(pchIPv4)) == 0);
}
bool IsRFC1918() const
{
return IsIPv4() && (GetByte(3) == 10 ||
(GetByte(3) == 192 && GetByte(2) == 168) ||
(GetByte(3) == 172 &&
(GetByte(2) >= 16 && GetByte(2) <= 31)));
}
bool IsRFC3927() const
{
return IsIPv4() && (GetByte(3) == 169 && GetByte(2) == 254);
}
bool IsLocal() const
{
return IsIPv4() && (GetByte(3) == 127 ||
GetByte(3) == 0);
}
bool IsRoutable() const
{
return IsValid() &&
!(GetByte(3) == 10 ||
(GetByte(3) == 192 && GetByte(2) == 168) ||
GetByte(3) == 127 ||
GetByte(3) == 0);
!(IsRFC1918() || IsRFC3927() || IsLocal());
}
bool IsValid() const