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Preliminary support for Tor/I2P hidden services

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There are plans to let Bitcoin function as Tor/I2P hidden service.
To do so, we could use the established encoding provided by OnionCat
and GarliCat (without actually using those tools) to embed Tor/I2P
addresses in IPv6.

This patch makes these addresses considered routable, so they can
travel over the Bitcoin network in 'addr' messages. This will hopefully
make it easier to deploy real hidden service support later.
This commit is contained in:
Pieter Wuille
2012-04-02 17:06:11 +02:00
parent 23aa78c405
commit d32148567f
2 changed files with 15 additions and 1 deletions
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14
src/netbase.cpp
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@@ -615,6 +615,18 @@ bool CNetAddr::IsRFC4843() const
return (GetByte(15) == 0x20 && GetByte(14) == 0x01 && GetByte(13) == 0x00 && (GetByte(12) & 0xF0) == 0x10);
}
bool CNetAddr::IsOnionCat() const
{
static const unsigned char pchOnionCat[] = {0xFD,0x87,0xD8,0x7E,0xEB,0x43};
return (memcmp(ip, pchOnionCat, sizeof(pchOnionCat)) == 0);
}
bool CNetAddr::IsGarliCat() const
{
static const unsigned char pchGarliCat[] = {0xFD,0x60,0xDB,0x4D,0xDD,0xB5};
return (memcmp(ip, pchGarliCat, sizeof(pchGarliCat)) == 0);
}
bool CNetAddr::IsLocal() const
{
// IPv4 loopback
@@ -673,7 +685,7 @@ bool CNetAddr::IsValid() const
bool CNetAddr::IsRoutable() const
{
return IsValid() && !(IsRFC1918() || IsRFC3927() || IsRFC4862() || IsRFC4193() || IsRFC4843() || IsLocal());
return IsValid() && !(IsRFC1918() || IsRFC3927() || IsRFC4862() || (IsRFC4193() && !IsOnionCat() && !IsGarliCat()) || IsRFC4843() || IsLocal());
}
std::string CNetAddr::ToStringIP() const