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privacy: Stream isolation for Tor

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According to Tor's extensions to the SOCKS protocol
(https://gitweb.torproject.org/torspec.git/tree/socks-extensions.txt)
it is possible to perform stream isolation by providing authentication
to the proxy. Each set of credentials will create a new circuit,
which makes it harder to correlate connections.

This patch adds an option, `-proxyrandomize` (on by default) that randomizes
credentials for every outgoing connection, thus creating a new circuit.

    2015-03-16 15:29:59 SOCKS5 Sending proxy authentication 3842137544:3256031132
This commit is contained in:
Wladimir J. van der Laan
2015-03-16 16:30:49 +01:00
parent 8f955b9661
commit 67a7949397
6 changed files with 134 additions and 84 deletions
Download Patch File Download Diff File Expand all files Collapse all files

16
src/netbase.h
View File

@@ -168,15 +168,25 @@ class CService : public CNetAddr
}
};
typedef CService proxyType;
class proxyType
{
public:
proxyType(): randomize_credentials(false) {}
proxyType(const CService &proxy, bool randomize_credentials=false): proxy(proxy), randomize_credentials(randomize_credentials) {}
bool IsValid() const { return proxy.IsValid(); }
CService proxy;
bool randomize_credentials;
};
enum Network ParseNetwork(std::string net);
std::string GetNetworkName(enum Network net);
void SplitHostPort(std::string in, int &portOut, std::string &hostOut);
bool SetProxy(enum Network net, CService addrProxy);
bool SetProxy(enum Network net, const proxyType &addrProxy);
bool GetProxy(enum Network net, proxyType &proxyInfoOut);
bool IsProxy(const CNetAddr &addr);
bool SetNameProxy(CService addrProxy);
bool SetNameProxy(const proxyType &addrProxy);
bool HaveNameProxy();
bool LookupHost(const char *pszName, std::vector<CNetAddr>& vIP, unsigned int nMaxSolutions = 0, bool fAllowLookup = true);
bool Lookup(const char *pszName, CService& addr, int portDefault = 0, bool fAllowLookup = true);