+// Version 1.5.0.0 - Updated to use InspSocket, faster and neater.
+
+/** Handles RFC1413 ident connections to users
+ */
+class RFC1413 : public InspSocket
+{
+ protected:
+ socklen_t uslen; // length of our port number
+ socklen_t themlen; // length of their port number
+ char ident_request[128]; // buffer used to make up the request string
+ public:
+
+ userrec* u; // user record that the lookup is associated with
+ int ufd;
+
+ RFC1413(InspIRCd* SI, userrec* user, int maxtime) : InspSocket(SI, user->GetIPString(), 113, false, maxtime), u(user)
+ {
+ ufd = user->GetFd();
+ }
+
+ virtual void OnTimeout()
+ {
+ // When we timeout, the connection failed within the allowed timeframe,
+ // so we just display a notice, and tidy off the ident_data.
+ if (u && (Instance->SE->GetRef(ufd) == u))
+ {
+ u->Shrink("ident_data");
+ Instance->next_call = Instance->Time();
+ }
+ }
+
+ virtual bool OnDataReady()
+ {
+ char* ibuf = this->Read();
+ if (ibuf)
+ {
+ char* savept;
+ char* section = strtok_r(ibuf,":",&savept);
+ while (section)
+ {
+ if (strstr(section,"USERID"))
+ {
+ section = strtok_r(NULL,":",&savept);
+ if (section)
+ {
+ // ID type, usually UNIX or OTHER... we dont want it, so read the next token
+ section = strtok_r(NULL,":",&savept);
+ if (section)
+ {
+ while (*section == ' ') section++; // strip leading spaces
+ for (char* j = section; *j; j++)
+ if ((*j < 33) || (*j > 126))
+ *j = '\0'; // truncate at invalid chars
+ if (*section)
+ {
+ if (u && (Instance->SE->GetRef(ufd) == u))
+ {
+ if (this->Instance->IsIdent(section))
+ {
+ u->Extend("IDENT", new std::string(std::string(section) + "," + std::string(u->ident)));
+ strlcpy(u->ident,section,IDENTMAX);
+ u->WriteServ("NOTICE "+std::string(u->nick)+" :*** Found your ident: "+std::string(u->ident));
+ }
+ }
+ }
+ return false;
+ }
+ }
+ }
+ section = strtok_r(NULL,":",&savept);
+ }
+ }
+ return false;
+ }
+
+ virtual void OnClose()
+ {
+ // tidy up after ourselves when the connection is done.
+ // We receive this event straight after a timeout, too.
+ //
+ //
+ // OK, now listen up. The weird looking check here is
+ // REQUIRED. Don't try and optimize it away.
+ //
+ // When a socket is closed, it is not immediately removed
+ // from the socket list, there can be a short delay
+ // before it is culled from the list. This means that
+ // without this check, there is a chance that a user
+ // may not exist when we come to ::Shrink them, which
+ // results in a segfault. The value of "u" may not
+ // always be NULL at this point, so, what we do is
+ // check against the fd_ref_table, to see if (1) the user
+ // exists, and (2) its the SAME user, on the same file
+ // descriptor that they were when the lookup began.
+ //
+ // Fixes issue reported by webs, 7 Jun 2006
+ if (u && (Instance->SE->GetRef(ufd) == u))
+ {
+ Instance->next_call = Instance->Time();
+ u->Shrink("ident_data");
+ }
+ }
+
+ virtual void OnError(InspSocketError e)
+ {
+ if (u && (Instance->SE->GetRef(ufd) == u))
+ {
+ if (*u->ident == '~')
+ u->WriteServ("NOTICE "+std::string(u->nick)+" :*** Could not find your ident, using "+std::string(u->ident)+" instead.");
+
+ Instance->next_call = Instance->Time();
+ u->Shrink("ident_data");
+ }
+ }
+
+ virtual bool OnConnected()
+ {
+ if (u && (Instance->SE->GetRef(ufd) == u))
+ {
+ sockaddr* sock_us = new sockaddr[2];
+ sockaddr* sock_them = new sockaddr[2];
+ bool success = false;
+ uslen = sizeof(sockaddr_in);
+ themlen = sizeof(sockaddr_in);
+#ifdef IPV6
+ if (this->u->GetProtocolFamily() == AF_INET6)
+ {
+ themlen = sizeof(sockaddr_in6);
+ uslen = sizeof(sockaddr_in6);
+ success = ((getsockname(this->u->GetFd(),sock_us,&uslen) || getpeername(this->u->GetFd(), sock_them, &themlen)));
+ }
+ else
+ success = ((getsockname(this->u->GetFd(),sock_us,&uslen) || getpeername(this->u->GetFd(), sock_them, &themlen)));
+#else
+ success = ((getsockname(this->u->GetFd(),sock_us,&uslen) || getpeername(this->u->GetFd(), sock_them, &themlen)));
+#endif
+ if (success)
+ {
+ delete[] sock_us;
+ delete[] sock_them;
+ return false;
+ }
+ else
+ {
+ // send the request in the following format: theirsocket,oursocket
+#ifdef IPV6
+ if (this->u->GetProtocolFamily() == AF_INET6)
+ snprintf(ident_request,127,"%d,%d\r\n",ntohs(((sockaddr_in6*)sock_them)->sin6_port),ntohs(((sockaddr_in6*)sock_us)->sin6_port));
+ else
+ snprintf(ident_request,127,"%d,%d\r\n",ntohs(((sockaddr_in*)sock_them)->sin_port),ntohs(((sockaddr_in*)sock_us)->sin_port));
+#else
+ snprintf(ident_request,127,"%d,%d\r\n",ntohs(((sockaddr_in*)sock_them)->sin_port),ntohs(((sockaddr_in*)sock_us)->sin_port));
+#endif
+ this->Write(ident_request);
+ delete[] sock_us;
+ delete[] sock_them;
+ return true;
+ }
+ }
+ else
+ {
+ Instance->next_call = Instance->Time();
+ return true;
+ }
+ }
+};
+