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Updated netbase from upstream bitcoin
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@sipa
sipa committed Sep 29, 2012
1 parent a4e78e5 commit 849daec
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Showing 2 changed files with 53 additions and 70 deletions.
114 changes: 48 additions & 66 deletions netbase.cpp
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Expand Up @@ -35,6 +35,27 @@ enum Network ParseNetwork(std::string net) {
return NET_UNROUTABLE;
}

void SplitHostPort(std::string in, int &portOut, std::string &hostOut) {
size_t colon = in.find_last_of(':');
// if a : is found, and it either follows a [...], or no other : is in the string, treat it as port separator
bool fHaveColon = colon != in.npos;
bool fBracketed = fHaveColon && (in[0]=='[' && in[colon-1]==']'); // if there is a colon, and in[0]=='[', colon is not 0, so in[colon-1] is safe
bool fMultiColon = fHaveColon && (in.find_last_of(':',colon-1) != in.npos);
if (fHaveColon && (colon==0 || fBracketed || !fMultiColon)) {
char *endp = NULL;
int n = strtol(in.c_str() + colon + 1, &endp, 10);
if (endp && *endp == 0 && n >= 0) {
in = in.substr(0, colon);
if (n > 0 && n < 0x10000)
portOut = n;
}
}
if (in.size()>0 && in[0] == '[' && in[in.size()-1] == ']')
hostOut = in.substr(1, in.size()-2);
else
hostOut = in;
}

bool static LookupIntern(const char *pszName, std::vector<CNetAddr>& vIP, unsigned int nMaxSolutions, bool fAllowLookup)
{
vIP.clear();
Expand All @@ -55,19 +76,17 @@ bool static LookupIntern(const char *pszName, std::vector<CNetAddr>& vIP, unsign
#ifdef WIN32
# ifdef USE_IPV6
aiHint.ai_family = AF_UNSPEC;
aiHint.ai_flags = fAllowLookup ? 0 : AI_NUMERICHOST;
# else
aiHint.ai_family = AF_INET;
aiHint.ai_flags = fAllowLookup ? 0 : AI_NUMERICHOST;
# endif
aiHint.ai_flags = fAllowLookup ? 0 : AI_NUMERICHOST;
#else
# ifdef USE_IPV6
aiHint.ai_family = AF_UNSPEC;
aiHint.ai_flags = AI_ADDRCONFIG | (fAllowLookup ? 0 : AI_NUMERICHOST);
# else
aiHint.ai_family = AF_INET;
aiHint.ai_flags = AI_ADDRCONFIG | (fAllowLookup ? 0 : AI_NUMERICHOST);
# endif
aiHint.ai_flags = fAllowLookup ? AI_ADDRCONFIG : AI_NUMERICHOST;
#endif
struct addrinfo *aiRes = NULL;
int nErr = getaddrinfo(pszName, NULL, &aiHint, &aiRes);
Expand Down Expand Up @@ -125,36 +144,11 @@ bool Lookup(const char *pszName, std::vector<CService>& vAddr, int portDefault,
if (pszName[0] == 0)
return false;
int port = portDefault;
char psz[256];
char *pszHost = psz;
strlcpy(psz, pszName, sizeof(psz));
char* pszColon = strrchr(psz+1,':');
char *pszPortEnd = NULL;
int portParsed = pszColon ? strtoul(pszColon+1, &pszPortEnd, 10) : 0;
if (pszColon && pszPortEnd && pszPortEnd[0] == 0)
{
if (psz[0] == '[' && pszColon[-1] == ']')
{
pszHost = psz+1;
pszColon[-1] = 0;
}
else
pszColon[0] = 0;
if (port >= 0 && port <= USHRT_MAX)
port = portParsed;
}
else
{
if (psz[0] == '[' && psz[strlen(psz)-1] == ']')
{
pszHost = psz+1;
psz[strlen(psz)-1] = 0;
}

}
std::string hostname = "";
SplitHostPort(std::string(pszName), port, hostname);

std::vector<CNetAddr> vIP;
bool fRet = LookupIntern(pszHost, vIP, nMaxSolutions, fAllowLookup);
bool fRet = LookupIntern(hostname.c_str(), vIP, nMaxSolutions, fAllowLookup);
if (!fRet)
return false;
vAddr.resize(vIP.size());
Expand Down Expand Up @@ -232,7 +226,7 @@ bool static Socks5(string strDest, int port, SOCKET& hSocket)
}
char pszSocks5Init[] = "\5\1\0";
char *pszSocks5 = pszSocks5Init;
ssize_t nSize = sizeof(pszSocks5Init);
ssize_t nSize = sizeof(pszSocks5Init) - 1;

ssize_t ret = send(hSocket, pszSocks5, nSize, MSG_NOSIGNAL);
if (ret != nSize)
Expand All @@ -254,7 +248,7 @@ bool static Socks5(string strDest, int port, SOCKET& hSocket)
string strSocks5("\5\1");
strSocks5 += '\000'; strSocks5 += '\003';
strSocks5 += static_cast<char>(std::min((int)strDest.size(), 255));
strSocks5 += strDest;
strSocks5 += strDest;
strSocks5 += static_cast<char>((port >> 8) & 0xFF);
strSocks5 += static_cast<char>((port >> 0) & 0xFF);
ret = send(hSocket, strSocks5.c_str(), strSocks5.size(), MSG_NOSIGNAL);
Expand Down Expand Up @@ -486,7 +480,7 @@ bool ConnectSocket(const CService &addrDest, SOCKET& hSocketRet, int nTimeout)
// first connect to proxy server
if (!ConnectSocketDirectly(proxy.first, hSocket, nTimeout))
return false;

// do socks negotiation
switch (proxy.second) {
case 4:
Expand All @@ -507,22 +501,9 @@ bool ConnectSocket(const CService &addrDest, SOCKET& hSocketRet, int nTimeout)

bool ConnectSocketByName(CService &addr, SOCKET& hSocketRet, const char *pszDest, int portDefault, int nTimeout)
{
string strDest(pszDest);
string strDest;
int port = portDefault;

// split hostname and port
size_t colon = strDest.find_last_of(':');
if (colon != strDest.npos) {
char *endp = NULL;
int n = strtol(pszDest + colon + 1, &endp, 10);
if (endp && *endp == 0 && n >= 0) {
strDest = strDest.substr(0, colon);
if (n > 0 && n < 0x10000)
port = n;
}
}
if (strDest[0] == '[' && strDest[strDest.size()-1] == ']')
strDest = strDest.substr(1, strDest.size()-2);
SplitHostPort(string(pszDest), port, strDest);

SOCKET hSocket = INVALID_SOCKET;
CService addrResolved(CNetAddr(strDest, fNameLookup && !nameproxyInfo.second), port);
Expand Down Expand Up @@ -570,7 +551,7 @@ bool CNetAddr::SetSpecial(const std::string &strName)
if (vchAddr.size() != 16-sizeof(pchOnionCat))
return false;
memcpy(ip, pchOnionCat, sizeof(pchOnionCat));
for (int i=0; i<16-sizeof(pchOnionCat); i++)
for (unsigned int i=0; i<16-sizeof(pchOnionCat); i++)
ip[i + sizeof(pchOnionCat)] = vchAddr[i];
return true;
}
Expand All @@ -579,7 +560,7 @@ bool CNetAddr::SetSpecial(const std::string &strName)
if (vchAddr.size() != 16-sizeof(pchGarliCat))
return false;
memcpy(ip, pchOnionCat, sizeof(pchGarliCat));
for (int i=0; i<16-sizeof(pchGarliCat); i++)
for (unsigned int i=0; i<16-sizeof(pchGarliCat); i++)
ip[i + sizeof(pchGarliCat)] = vchAddr[i];
return true;
}
Expand Down Expand Up @@ -620,7 +601,7 @@ CNetAddr::CNetAddr(const std::string &strIp, bool fAllowLookup)
*this = vIP[0];
}

int CNetAddr::GetByte(int n) const
unsigned int CNetAddr::GetByte(int n) const
{
return ip[15-n];
}
Expand All @@ -638,8 +619,8 @@ bool CNetAddr::IsIPv6() const
bool CNetAddr::IsRFC1918() const
{
return IsIPv4() && (
GetByte(3) == 10 ||
(GetByte(3) == 192 && GetByte(2) == 168) ||
GetByte(3) == 10 ||
(GetByte(3) == 192 && GetByte(2) == 168) ||
(GetByte(3) == 172 && (GetByte(2) >= 16 && GetByte(2) <= 31)));
}

Expand Down Expand Up @@ -723,7 +704,7 @@ bool CNetAddr::IsMulticast() const

bool CNetAddr::IsValid() const
{
// Clean up 3-byte shifted addresses caused by garbage in size field
// Cleanup 3-byte shifted addresses caused by garbage in size field
// of addr messages from versions before 0.2.9 checksum.
// Two consecutive addr messages look like this:
// header20 vectorlen3 addr26 addr26 addr26 header20 vectorlen3 addr26 addr26 addr26...
Expand Down Expand Up @@ -872,13 +853,13 @@ std::vector<unsigned char> CNetAddr::GetGroup() const
nClass = NET_IPV4;
nStartByte = 12;
}
// for 6to4 tunneled addresses, use the encapsulated IPv4 address
// for 6to4 tunnelled addresses, use the encapsulated IPv4 address
else if (IsRFC3964())
{
nClass = NET_IPV4;
nStartByte = 2;
}
// for Teredo-tunneled IPv6 addresses, use the encapsulated IPv4 address
// for Teredo-tunnelled IPv6 addresses, use the encapsulated IPv4 address
else if (IsRFC4380())
{
vchRet.push_back(NET_IPV4);
Expand Down Expand Up @@ -918,10 +899,10 @@ std::vector<unsigned char> CNetAddr::GetGroup() const
return vchRet;
}

int64 CNetAddr::GetHash() const
uint64 CNetAddr::GetHash() const
{
uint256 hash = Hash(&ip[0], &ip[16]);
int64 nRet;
uint64 nRet;
memcpy(&nRet, &hash, sizeof(nRet));
return nRet;
}
Expand All @@ -931,10 +912,11 @@ void CNetAddr::print() const
printf("CNetAddr(%s)\n", ToString().c_str());
}

// C++ doesn't allow us to inherit from enums
// private extensions to enum Network, only returned by GetExtNetwork,
// and only used in GetReachabilityFrom
static const int NET_UNKNOWN = NET_MAX + 0;
static const int NET_TEREDO = NET_MAX + 1;
int GetExtNetwork(const CNetAddr *addr)
int static GetExtNetwork(const CNetAddr *addr)
{
if (addr == NULL)
return NET_UNKNOWN;
Expand Down Expand Up @@ -974,7 +956,7 @@ int CNetAddr::GetReachabilityFrom(const CNetAddr *paddrPartner) const
default: return REACH_DEFAULT;
case NET_TEREDO: return REACH_TEREDO;
case NET_IPV4: return REACH_IPV4;
case NET_IPV6: return fTunnel ? REACH_IPV6_WEAK : REACH_IPV6_STRONG; // only prefer giving our IPv6 address if it's not tunneled
case NET_IPV6: return fTunnel ? REACH_IPV6_WEAK : REACH_IPV6_STRONG; // only prefer giving our IPv6 address if it's not tunnelled
}
case NET_TOR:
switch(ourNet) {
Expand Down Expand Up @@ -1115,7 +1097,7 @@ bool operator<(const CService& a, const CService& b)
bool CService::GetSockAddr(struct sockaddr* paddr, socklen_t *addrlen) const
{
if (IsIPv4()) {
if (*addrlen < sizeof(struct sockaddr_in))
if (*addrlen < (socklen_t)sizeof(struct sockaddr_in))
return false;
*addrlen = sizeof(struct sockaddr_in);
struct sockaddr_in *paddrin = (struct sockaddr_in*)paddr;
Expand All @@ -1128,7 +1110,7 @@ bool CService::GetSockAddr(struct sockaddr* paddr, socklen_t *addrlen) const
}
#ifdef USE_IPV6
if (IsIPv6()) {
if (*addrlen < sizeof(struct sockaddr_in6))
if (*addrlen < (socklen_t)sizeof(struct sockaddr_in6))
return false;
*addrlen = sizeof(struct sockaddr_in6);
struct sockaddr_in6 *paddrin6 = (struct sockaddr_in6*)paddr;
Expand All @@ -1155,7 +1137,7 @@ std::vector<unsigned char> CService::GetKey() const

std::string CService::ToStringPort() const
{
return strprintf("%i", port);
return strprintf("%u", port);
}

std::string CService::ToStringIPPort() const
Expand Down
9 changes: 5 additions & 4 deletions netbase.h
View file
Expand Up @@ -50,9 +50,9 @@ class CNetAddr
bool IsRFC1918() const; // IPv4 private networks (10.0.0.0/8, 192.168.0.0/16, 172.16.0.0/12)
bool IsRFC3849() const; // IPv6 documentation address (2001:0DB8::/32)
bool IsRFC3927() const; // IPv4 autoconfig (169.254.0.0/16)
bool IsRFC3964() const; // IPv6 6to4 tunneling (2002::/16)
bool IsRFC3964() const; // IPv6 6to4 tunnelling (2002::/16)
bool IsRFC4193() const; // IPv6 unique local (FC00::/15)
bool IsRFC4380() const; // IPv6 Teredo tunneling (2001::/32)
bool IsRFC4380() const; // IPv6 Teredo tunnelling (2001::/32)
bool IsRFC4843() const; // IPv6 ORCHID (2001:10::/28)
bool IsRFC4862() const; // IPv6 autoconfig (FE80::/64)
bool IsRFC6052() const; // IPv6 well-known prefix (64:FF9B::/96)
Expand All @@ -66,8 +66,8 @@ class CNetAddr
enum Network GetNetwork() const;
std::string ToString() const;
std::string ToStringIP() const;
int GetByte(int n) const;
int64 GetHash() const;
unsigned int GetByte(int n) const;
uint64 GetHash() const;
bool GetInAddr(struct in_addr* pipv4Addr) const;
std::vector<unsigned char> GetGroup() const;
int GetReachabilityFrom(const CNetAddr *paddrPartner = NULL) const;
Expand Down Expand Up @@ -134,6 +134,7 @@ class CService : public CNetAddr
};

enum Network ParseNetwork(std::string net);
void SplitHostPort(std::string in, int &portOut, std::string &hostOut);
bool SetProxy(enum Network net, CService addrProxy, int nSocksVersion = 5);
bool GetProxy(enum Network net, CService &addrProxy);
bool IsProxy(const CNetAddr &addr);
Expand Down

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