- // in inspircd users have two hostnames. A displayed
- // hostname which can be modified by modules (e.g.
- // to create vhosts, implement chghost, etc) and a
- // 'real' hostname which you shouldnt write to.
- std::string a = strstr(dest->host,".");
- char ra[64];
- long seed,s2;
- memcpy(&seed,dest->host,sizeof(long));
- memcpy(&s2,a.c_str(),sizeof(long));
- sprintf(ra,"%.8X",seed*s2*strlen(dest->host));
- std::string b = Srv->GetNetworkName() + "-" + ra + a;
- Srv->Log(DEBUG,"cloak: allocated "+b);
- Srv->ChangeHost(dest,b);
+ unsigned int iv[] = { key1, key2, key3, key4 };
+ std::string a = LastTwoDomainParts(dest->host);
+ std::string b;
+
+ /* InspIRCd users have two hostnames; A displayed
+ * hostname which can be modified by modules (e.g.
+ * to create vhosts, implement chghost, etc) and a
+ * 'real' hostname which you shouldnt write to.
+ */
+
+ /* 2008/08/18: add <cloak:ipalways> which always cloaks
+ * the IP, for anonymity. --nenolod
+ */
+ if (!ipalways)
+ {
+ /** Reset the Hash module, and send it our IV and hex table */
+ HashResetRequest(Sender, HashProvider).Send();
+ HashKeyRequest(Sender, HashProvider, iv).Send();
+ HashHexRequest(Sender, HashProvider, xtab[(*dest->host) % 4]);
+
+ /* Generate a cloak using specialized Hash */
+ std::string hostcloak = prefix + "-" + std::string(HashSumRequest(Sender, HashProvider, dest->host).Send()).substr(0,8) + a;
+
+ /* Fix by brain - if the cloaked host is > the max length of a host (64 bytes
+ * according to the DNS RFC) then tough titty, they get cloaked as an IP.
+ * Their ISP shouldnt go to town on subdomains, or they shouldnt have a kiddie
+ * vhost.
+ */
+#ifdef IPV6
+ in6_addr testaddr;
+ in_addr testaddr2;
+ if ((dest->GetProtocolFamily() == AF_INET6) && (inet_pton(AF_INET6,dest->host,&testaddr) < 1) && (hostcloak.length() <= 64))
+ /* Invalid ipv6 address, and ipv6 user (resolved host) */
+ b = hostcloak;
+ else if ((dest->GetProtocolFamily() == AF_INET) && (inet_aton(dest->host,&testaddr2) < 1) && (hostcloak.length() <= 64))
+ /* Invalid ipv4 address, and ipv4 user (resolved host) */
+ b = hostcloak;
+ else
+ /* Valid ipv6 or ipv4 address (not resolved) ipv4 or ipv6 user */
+ b = ((!strchr(dest->host,':')) ? Cloak4(dest->host) : Cloak6(dest->host));
+#else
+ in_addr testaddr;
+ if ((inet_aton(dest->host,&testaddr) < 1) && (hostcloak.length() <= 64))
+ /* Invalid ipv4 address, and ipv4 user (resolved host) */
+ b = hostcloak;
+ else
+ /* Valid ipv4 address (not resolved) ipv4 user */
+ b = Cloak4(dest->host);
+#endif
+ }
+ else
+ {
+#ifdef IPV6
+ if (dest->GetProtocolFamily() == AF_INET6)
+ b = Cloak6(dest->GetIPString());
+#endif
+ if (dest->GetProtocolFamily() == AF_INET)
+ b = Cloak4(dest->GetIPString());
+ }
+
+ dest->ChangeDisplayedHost(b.c_str());