]> git.netwichtig.de Git - user/henk/code/inspircd.git/blobdiff - src/socket.cpp
Fix some confusing logic in sanick.
[user/henk/code/inspircd.git] / src / socket.cpp
index 1b657e568179452af0a8baf901d63e66cd1b89f0..78b7f2de92214b85731ac6664081f589f26cbad2 100644 (file)
-/*       +------------------------------------+
- *       | Inspire Internet Relay Chat Daemon |
- *       +------------------------------------+
+/*
+ * InspIRCd -- Internet Relay Chat Daemon
  *
- *  InspIRCd is copyright (C) 2002-2006 ChatSpike-Dev.
- *                       E-mail:
- *                <brain@chatspike.net>
- *               <Craig@chatspike.net>
- *     
- * Written by Craig Edwards, Craig McLure, and others.
- * This program is free but copyrighted software; see
- *            the file COPYING for details.
+ *   Copyright (C) 2019 linuxdaemon <linuxdaemon.irc@gmail.com>
+ *   Copyright (C) 2014 Attila Molnar <attilamolnar@hush.com>
+ *   Copyright (C) 2013, 2017-2020 Sadie Powell <sadie@witchery.services>
+ *   Copyright (C) 2013 Daniel Vassdal <shutter@canternet.org>
+ *   Copyright (C) 2012 Robby <robby@chatbelgie.be>
+ *   Copyright (C) 2009-2011 Daniel De Graaf <danieldg@inspircd.org>
+ *   Copyright (C) 2009 Uli Schlachter <psychon@inspircd.org>
+ *   Copyright (C) 2008 Thomas Stagner <aquanight@inspircd.org>
+ *   Copyright (C) 2007 John Brooks <special@inspircd.org>
+ *   Copyright (C) 2007 Dennis Friis <peavey@inspircd.org>
+ *   Copyright (C) 2006 Craig Edwards <brain@inspircd.org>
  *
- * ---------------------------------------------------
+ * This file is part of InspIRCd.  InspIRCd is free software: you can
+ * redistribute it and/or modify it under the terms of the GNU General Public
+ * License as published by the Free Software Foundation, version 2.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-using namespace std;
-
-#include "inspircd_config.h"
-#include <sys/time.h>
-#include <sys/resource.h>
-#include <sys/types.h>
-#include <sys/socket.h>
-#include <netinet/in.h>
-#include <string>
-#include <unistd.h>
-#include <fcntl.h>
-#include <poll.h>
-#include <sstream>
-#include <iostream>
-#include <fstream>
-#include <stdexcept>
-#include "socket.h"
+
 #include "inspircd.h"
-#include "inspircd_io.h"
-#include "inspstring.h"
-#include "helperfuncs.h"
-#include "socketengine.h"
 
+bool InspIRCd::BindPort(ConfigTag* tag, const irc::sockets::sockaddrs& sa, std::vector<ListenSocket*>& old_ports)
+{
+       for (std::vector<ListenSocket*>::iterator n = old_ports.begin(); n != old_ports.end(); ++n)
+       {
+               if ((**n).bind_sa == sa)
+               {
+                       // Replace tag, we know addr and port match, but other info (type, ssl) may not.
+                       ServerInstance->Logs->Log("SOCKET", LOG_DEFAULT, "Replacing listener on %s from old tag at %s with new tag from %s",
+                               sa.str().c_str(), (*n)->bind_tag->getTagLocation().c_str(), tag->getTagLocation().c_str());
+                       (*n)->bind_tag = tag;
+                       (*n)->ResetIOHookProvider();
 
-extern InspIRCd* ServerInstance;
-extern ServerConfig* Config;
-extern time_t TIME;
+                       old_ports.erase(n);
+                       return true;
+               }
+       }
 
-InspSocket* socket_ref[MAX_DESCRIPTORS];
+       ListenSocket* ll = new ListenSocket(tag, sa);
+       if (!ll->HasFd())
+       {
+               ServerInstance->Logs->Log("SOCKET", LOG_DEFAULT, "Failed to listen on %s from tag at %s: %s",
+                       sa.str().c_str(), tag->getTagLocation().c_str(), strerror(errno));
+               delete ll;
+               return false;
+       }
 
-InspSocket::InspSocket()
-{
-       this->state = I_DISCONNECTED;
-       this->fd = -1;
-       this->ClosePending = false;
+       ServerInstance->Logs->Log("SOCKET", LOG_DEFAULT, "Added a listener on %s from tag at %s", sa.str().c_str(), tag->getTagLocation().c_str());
+       ports.push_back(ll);
+       return true;
 }
 
-InspSocket::InspSocket(int newfd, char* ip)
+size_t InspIRCd::BindPorts(FailedPortList& failed_ports)
 {
-       this->fd = newfd;
-       this->state = I_CONNECTED;
-       strlcpy(this->IP,ip,MAXBUF);
-       this->ClosePending = false;
-       ServerInstance->SE->AddFd(this->fd,true,X_ESTAB_MODULE);
-       socket_ref[this->fd] = this;
-}
+       size_t bound = 0;
+       std::vector<ListenSocket*> old_ports(ports.begin(), ports.end());
 
-InspSocket::InspSocket(const std::string &ahost, int aport, bool listening, unsigned long maxtime) : fd(-1)
-{
-       strlcpy(host,ahost.c_str(),MAXBUF);
-       this->ClosePending = false;
-       if (listening) {
-               if ((this->fd = OpenTCPSocket()) == ERROR)
+       ConfigTagList tags = ServerInstance->Config->ConfTags("bind");
+       for (ConfigIter i = tags.first; i != tags.second; ++i)
+       {
+               ConfigTag* tag = i->second;
+
+               // Are we creating a TCP/IP listener?
+               const std::string address = tag->getString("address");
+               const std::string portlist = tag->getString("port");
+               if (!address.empty() || !portlist.empty())
                {
-                       this->fd = -1;
-                       this->state = I_ERROR;
-                       this->OnError(I_ERR_SOCKET);
-                       this->ClosePending = true;
-                       log(DEBUG,"OpenTCPSocket() error");
-                       return;
+                       // InspIRCd supports IPv4 and IPv6 natively; no 4in6 required.
+                       if (strncasecmp(address.c_str(), "::ffff:", 7) == 0)
+                               this->Logs->Log("SOCKET", LOG_DEFAULT, "Using 4in6 (::ffff:) isn't recommended. You should bind IPv4 addresses directly instead.");
+
+                       // A TCP listener with no ports is not very useful.
+                       if (portlist.empty())
+                               this->Logs->Log("SOCKET", LOG_DEFAULT, "TCP listener on %s at %s has no ports specified!",
+                                       address.empty() ? "*" : address.c_str(), tag->getTagLocation().c_str());
+
+                       irc::portparser portrange(portlist, false);
+                       for (int port; (port = portrange.GetToken()); )
+                       {
+                               irc::sockets::sockaddrs bindspec;
+                               if (!irc::sockets::aptosa(address, port, bindspec))
+                                       continue;
+
+                               if (!BindPort(tag, bindspec, old_ports))
+                                       failed_ports.push_back(FailedPort(errno, bindspec, tag));
+                               else
+                                       bound++;
+                       }
+                       continue;
                }
-               else
+
+#ifndef _WIN32
+               // Are we creating a UNIX listener?
+               const std::string path = tag->getString("path");
+               if (!path.empty())
                {
-                       if (!BindSocket(this->fd,this->client,this->server,aport,(char*)ahost.c_str()))
+                       // Expand the path relative to the config directory.
+                       const std::string fullpath = ServerInstance->Config->Paths.PrependData(path);
+
+                       // UNIX socket paths are length limited to less than PATH_MAX.
+                       irc::sockets::sockaddrs bindspec;
+                       if (fullpath.length() > std::min(ServerInstance->Config->Limits.MaxHost, sizeof(bindspec.un.sun_path) - 1))
                        {
-                               this->Close();
-                               this->fd = -1;
-                               this->state = I_ERROR;
-                               this->OnError(I_ERR_BIND);
-                               this->ClosePending = true;
-                               log(DEBUG,"BindSocket() error %s",strerror(errno));
-                               return;
+                               this->Logs->Log("SOCKET", LOG_DEFAULT, "UNIX listener on %s at %s specified a path that is too long!",
+                                       fullpath.c_str(), tag->getTagLocation().c_str());
+                               continue;
                        }
-                       else
+
+                       // Check for characters which are problematic in the IRC message format.
+                       if (fullpath.find_first_of("\n\r\t!@: ") != std::string::npos)
                        {
-                               this->state = I_LISTENING;
-                               ServerInstance->SE->AddFd(this->fd,true,X_ESTAB_MODULE);
-                               socket_ref[this->fd] = this;
-                               log(DEBUG,"New socket now in I_LISTENING state");
-                               return;
+                               this->Logs->Log("SOCKET", LOG_DEFAULT, "UNIX listener on %s at %s specified a path containing invalid characters!",
+                                       fullpath.c_str(), tag->getTagLocation().c_str());
+                               continue;
                        }
-               }                       
-       }
-       else
-       {
-               strlcpy(this->host,ahost.c_str(),MAXBUF);
-               this->port = aport;
 
-               if (!inet_aton(host,&addy))
-               {
-                       log(DEBUG,"Attempting to resolve %s",this->host);
-                       /* Its not an ip, spawn the resolver */
-                       this->dns.SetNS(std::string(Config->DNSServer));
-                       this->dns.ForwardLookupWithFD(host,fd);
-                       timeout_end = time(NULL) + maxtime;
-                       timeout = false;
-                       this->state = I_RESOLVING;
-                       socket_ref[this->fd] = this;
+                       irc::sockets::untosa(fullpath, bindspec);
+                       if (!BindPort(tag, bindspec, old_ports))
+                               failed_ports.push_back(FailedPort(errno, bindspec, tag));
+                       else
+                               bound++;
                }
-               else
+#endif
+       }
+
+       std::vector<ListenSocket*>::iterator n = ports.begin();
+       for (std::vector<ListenSocket*>::iterator o = old_ports.begin(); o != old_ports.end(); ++o)
+       {
+               while (n != ports.end() && *n != *o)
+                       n++;
+               if (n == ports.end())
                {
-                       log(DEBUG,"No need to resolve %s",this->host);
-                       strlcpy(this->IP,host,MAXBUF);
-                       timeout_end = time(NULL) + maxtime;
-                       this->DoConnect();
+                       this->Logs->Log("SOCKET", LOG_DEFAULT, "Port bindings slipped out of vector, aborting close!");
+                       break;
                }
+
+               this->Logs->Log("SOCKET", LOG_DEFAULT, "Port binding %s was removed from the config file, closing.",
+                       (**n).bind_sa.str().c_str());
+               delete *n;
+
+               // this keeps the iterator valid, pointing to the next element
+               n = ports.erase(n);
        }
-}
 
-void InspSocket::SetQueues(int nfd)
-{
-       // attempt to increase socket sendq and recvq as high as its possible
-       int sendbuf = 32768;
-       int recvbuf = 32768;
-       setsockopt(nfd,SOL_SOCKET,SO_SNDBUF,(const void *)&sendbuf,sizeof(sendbuf));
-       setsockopt(nfd,SOL_SOCKET,SO_RCVBUF,(const void *)&recvbuf,sizeof(sendbuf));
+       return bound;
 }
 
-bool InspSocket::DoResolve()
+bool irc::sockets::aptosa(const std::string& addr, int port, irc::sockets::sockaddrs& sa)
 {
-       log(DEBUG,"In DoResolve(), trying to resolve IP");
-       if (this->dns.HasResult())
+       memset(&sa, 0, sizeof(sa));
+       if (addr.empty() || addr.c_str()[0] == '*')
        {
-               log(DEBUG,"Socket has result");
-               std::string res_ip = dns.GetResultIP();
-               if (res_ip != "")
+               if (ServerInstance->Config->WildcardIPv6)
                {
-                       log(DEBUG,"Socket result set to %s",res_ip.c_str());
-                       strlcpy(this->IP,res_ip.c_str(),MAXBUF);
-                       socket_ref[this->fd] = NULL;
+                       sa.in6.sin6_family = AF_INET6;
+                       sa.in6.sin6_port = htons(port);
                }
                else
                {
-                       log(DEBUG,"Socket DNS failure");
-                       this->Close();
-                       this->state = I_ERROR;
-                       this->OnError(I_ERR_RESOLVE);
-                       this->fd = -1;
-                       this->ClosePending = true;
-                       return false;
+                       sa.in4.sin_family = AF_INET;
+                       sa.in4.sin_port = htons(port);
                }
-               return this->DoConnect();
+               return true;
        }
-       log(DEBUG,"No result for socket yet!");
-       return true;
+       else if (inet_pton(AF_INET, addr.c_str(), &sa.in4.sin_addr) > 0)
+       {
+               sa.in4.sin_family = AF_INET;
+               sa.in4.sin_port = htons(port);
+               return true;
+       }
+       else if (inet_pton(AF_INET6, addr.c_str(), &sa.in6.sin6_addr) > 0)
+       {
+               sa.in6.sin6_family = AF_INET6;
+               sa.in6.sin6_port = htons(port);
+               return true;
+       }
+       return false;
 }
 
-bool InspSocket::DoConnect()
+bool irc::sockets::untosa(const std::string& path, irc::sockets::sockaddrs& sa)
 {
-       log(DEBUG,"In DoConnect()");
-       if ((this->fd = socket(AF_INET, SOCK_STREAM, 0)) == -1)
-       {
-               log(DEBUG,"Cant socket()");
-               this->state = I_ERROR;
-               this->OnError(I_ERR_SOCKET);
-               this->fd = -1;
+       memset(&sa, 0, sizeof(sa));
+       if (path.length() >= sizeof(sa.un.sun_path))
                return false;
-       }
 
-       log(DEBUG,"Part 2 DoConnect() %s",this->IP);
-       inet_aton(this->IP,&addy);
-       addr.sin_family = AF_INET;
-       addr.sin_addr = addy;
-       addr.sin_port = htons(this->port);
-
-       int flags;
-       flags = fcntl(this->fd, F_GETFL, 0);
-       fcntl(this->fd, F_SETFL, flags | O_NONBLOCK);
-
-       if (connect(this->fd, (sockaddr*)&this->addr,sizeof(this->addr)) == -1)
-       {
-               if (errno != EINPROGRESS)
-               {
-                       log(DEBUG,"Error connect() %d: %s",this->fd,strerror(errno));
-                       this->OnError(I_ERR_CONNECT);
-                       this->Close();
-                       this->state = I_ERROR;
-                       this->fd = -1;
-                       this->ClosePending = true;
-                       return false;
-               }
-       }
-       this->state = I_CONNECTING;
-       ServerInstance->SE->AddFd(this->fd,false,X_ESTAB_MODULE);
-       socket_ref[this->fd] = this;
-       this->SetQueues(this->fd);
-       log(DEBUG,"Returning true from InspSocket::DoConnect");
+       sa.un.sun_family = AF_UNIX;
+       memcpy(&sa.un.sun_path, path.c_str(), path.length() + 1);
        return true;
 }
 
-
-void InspSocket::Close()
+bool irc::sockets::isunix(const std::string& file)
 {
-       if (this->fd != -1)
-       {
-               this->OnClose();
-               shutdown(this->fd,2);
-               close(this->fd);
-               socket_ref[this->fd] = NULL;
-               this->ClosePending = true;
-               this->fd = -1;
-       }
+#ifndef _WIN32
+       struct stat sb;
+       if (stat(file.c_str(), &sb) == 0 && S_ISSOCK(sb.st_mode))
+               return true;
+#endif
+       return false;
 }
 
-std::string InspSocket::GetIP()
+
+int irc::sockets::sockaddrs::family() const
 {
-       return this->IP;
+       return sa.sa_family;
 }
 
-char* InspSocket::Read()
+int irc::sockets::sockaddrs::port() const
 {
-       if ((fd < 0) || (fd > MAX_DESCRIPTORS))
-               return NULL;
-       int n = recv(this->fd,this->ibuf,sizeof(this->ibuf),0);
-       if ((n > 0) && (n <= (int)sizeof(this->ibuf)))
+       switch (family())
        {
-               ibuf[n] = 0;
-               return ibuf;
+               case AF_INET:
+                       return ntohs(in4.sin_port);
+
+               case AF_INET6:
+                       return ntohs(in6.sin6_port);
+
+               case AF_UNIX:
+                       return 0;
        }
-       else
+
+       // If we have reached this point then we have encountered a bug.
+       ServerInstance->Logs->Log("SOCKET", LOG_DEBUG, "BUG: irc::sockets::sockaddrs::port(): socket type %d is unknown!", family());
+       return 0;
+}
+
+std::string irc::sockets::sockaddrs::addr() const
+{
+       switch (family())
        {
-               if (errno == EAGAIN)
-               {
-                       return "";
-               }
-               else
-               {
-                       log(DEBUG,"EOF or error on socket: %s",strerror(errno));
-                       return NULL;
-               }
+               case AF_INET:
+                       char ip4addr[INET_ADDRSTRLEN];
+                       if (!inet_ntop(AF_INET, (void*)&in4.sin_addr, ip4addr, sizeof(ip4addr)))
+                               return "0.0.0.0";
+                       return ip4addr;
+
+               case AF_INET6:
+                       char ip6addr[INET6_ADDRSTRLEN];
+                       if (!inet_ntop(AF_INET6, (void*)&in6.sin6_addr, ip6addr, sizeof(ip6addr)))
+                               return "0:0:0:0:0:0:0:0";
+                       return ip6addr;
+
+               case AF_UNIX:
+                       return un.sun_path;
        }
+
+       // If we have reached this point then we have encountered a bug.
+       ServerInstance->Logs->Log("SOCKET", LOG_DEBUG, "BUG: irc::sockets::sockaddrs::addr(): socket type %d is unknown!", family());
+       return "<unknown>";
 }
 
-void InspSocket::MarkAsClosed()
+std::string irc::sockets::sockaddrs::str() const
 {
-       log(DEBUG,"Marked as closed");
-       this->ClosePending = true;
+       switch (family())
+       {
+               case AF_INET:
+                       char ip4addr[INET_ADDRSTRLEN];
+                       if (!inet_ntop(AF_INET, (void*)&in4.sin_addr, ip4addr, sizeof(ip4addr)))
+                               strcpy(ip4addr, "0.0.0.0");
+                       return InspIRCd::Format("%s:%u", ip4addr, ntohs(in4.sin_port));
+
+               case AF_INET6:
+                       char ip6addr[INET6_ADDRSTRLEN];
+                       if (!inet_ntop(AF_INET6, (void*)&in6.sin6_addr, ip6addr, sizeof(ip6addr)))
+                               strcpy(ip6addr, "0:0:0:0:0:0:0:0");
+                       return InspIRCd::Format("[%s]:%u", ip6addr, ntohs(in6.sin6_port));
+
+               case AF_UNIX:
+                       return un.sun_path;
+       }
+
+       // If we have reached this point then we have encountered a bug.
+       ServerInstance->Logs->Log("SOCKET", LOG_DEBUG, "BUG: irc::sockets::sockaddrs::str(): socket type %d is unknown!", family());
+       return "<unknown>";
 }
 
-// There are two possible outcomes to this function.
-// It will either write all of the data, or an undefined amount.
-// If an undefined amount is written the connection has failed
-// and should be aborted.
-int InspSocket::Write(const std::string &data)
+socklen_t irc::sockets::sockaddrs::sa_size() const
 {
-       if (this->ClosePending)
-               return false;
+       switch (family())
+       {
+               case AF_INET:
+                       return sizeof(in4);
 
-       /*int result = write(this->fd,data.c_str(),data.length());
-       if (result < 1)
-               return false;
-       return true;*/
+               case AF_INET6:
+                       return sizeof(in6);
+
+               case AF_UNIX:
+                       return sizeof(un);
+       }
 
-       /* Try and append the data to the back of the queue, and send it on its way
-        */
-       outbuffer.push_back(data);
-       return (!this->FlushWriteBuffer());
+       // If we have reached this point then we have encountered a bug.
+       ServerInstance->Logs->Log("SOCKET", LOG_DEBUG, "BUG: irc::sockets::sockaddrs::sa_size(): socket type %d is unknown!", family());
+       return 0;
 }
 
-bool InspSocket::FlushWriteBuffer()
+bool irc::sockets::sockaddrs::operator==(const irc::sockets::sockaddrs& other) const
 {
-       if (this->ClosePending)
-               return true;
+       if (family() != other.family())
+               return false;
 
-       if ((this->fd > -1) && (this->state == I_CONNECTED))
+       switch (family())
        {
-               if (outbuffer.size())
-               {
-                       int result = write(this->fd,outbuffer[0].c_str(),outbuffer[0].length());
-                       if (result > 0)
-                       {
-                               if ((unsigned int)result == outbuffer[0].length())
-                               {
-                                       /* The whole block was written (usually a line)
-                                        * Pop the block off the front of the queue
-                                        */
-                                       outbuffer.pop_front();
-                               }
-                               else
-                               {
-                                       std::string temp = outbuffer[0].substr(result);
-                                       outbuffer[0] = temp;
-                               }
-                       }
-                       else if ((result == -1) && (errno != EAGAIN))
-                       {
-                               log(DEBUG,"Write error on socket: %s",strerror(errno));
-                               this->OnError(I_ERR_WRITE);
-                               this->state = I_ERROR;
-                               this->ClosePending = true;
-                               return true;
-                       }
-               }
+               case AF_INET:
+                       return (in4.sin_port == other.in4.sin_port) && (in4.sin_addr.s_addr == other.in4.sin_addr.s_addr);
+
+               case AF_INET6:
+                       return (in6.sin6_port == other.in6.sin6_port) && !memcmp(in6.sin6_addr.s6_addr, other.in6.sin6_addr.s6_addr, 16);
+
+               case AF_UNIX:
+                       return !strcmp(un.sun_path, other.un.sun_path);
        }
-       return (fd < 0);
+
+       // If we have reached this point then we have encountered a bug.
+       ServerInstance->Logs->Log("SOCKET", LOG_DEBUG, "BUG: irc::sockets::sockaddrs::operator==(): socket type %d is unknown!", family());
+       return !memcmp(this, &other, sizeof(*this));
 }
 
-bool InspSocket::Timeout(time_t current)
+static void sa2cidr(irc::sockets::cidr_mask& cidr, const irc::sockets::sockaddrs& sa, unsigned char range)
 {
-       if (!socket_ref[this->fd] || !ServerInstance->SE->HasFd(this->fd))
+       const unsigned char* base;
+       unsigned char target_byte;
+
+       memset(cidr.bits, 0, sizeof(cidr.bits));
+
+       cidr.type = sa.family();
+       switch (cidr.type)
        {
-               log(DEBUG,"No FD or socket ref");
-               return false;
+               case AF_UNIX:
+                       // XXX: UNIX sockets don't support CIDR. This fix is non-ideal but I can't
+                       // really think of another way to handle it.
+                       cidr.length = 0;
+                       return;
+
+               case AF_INET:
+                       cidr.length = range > 32 ? 32 : range;
+                       target_byte = sizeof(sa.in4.sin_addr);
+                       base = (unsigned char*)&sa.in4.sin_addr;
+                       break;
+
+               case AF_INET6:
+                       cidr.length = range > 128 ? 128 : range;
+                       target_byte = sizeof(sa.in6.sin6_addr);
+                       base = (unsigned char*)&sa.in6.sin6_addr;
+                       break;
+
+               default:
+                       // If we have reached this point then we have encountered a bug.
+                       ServerInstance->Logs->Log("SOCKET", LOG_DEBUG, "BUG: sa2cidr(): socket type %d is unknown!", cidr.type);
+                       cidr.length = 0;
+                       return;
        }
 
-       if (this->ClosePending)
+       unsigned int border = cidr.length / 8;
+       unsigned int bitmask = (0xFF00 >> (range & 7)) & 0xFF;
+       for(unsigned int i=0; i < target_byte; i++)
        {
-               log(DEBUG,"Close is pending");
-               return true;
+               if (i < border)
+                       cidr.bits[i] = base[i];
+               else if (i == border)
+                       cidr.bits[i] = base[i] & bitmask;
+               else
+                       return;
        }
+}
+
+irc::sockets::cidr_mask::cidr_mask(const irc::sockets::sockaddrs& sa, unsigned char range)
+{
+       sa2cidr(*this, sa, range);
+}
+
+irc::sockets::cidr_mask::cidr_mask(const std::string& mask)
+{
+       std::string::size_type bits_chars = mask.rfind('/');
+       irc::sockets::sockaddrs sa;
 
-       if (((this->state == I_RESOLVING) || (this->state == I_CONNECTING)) && (current > timeout_end))
+       if (bits_chars == std::string::npos)
        {
-               log(DEBUG,"Timed out, current=%lu timeout_end=%lu");
-               // for non-listening sockets, the timeout can occur
-               // which causes termination of the connection after
-               // the given number of seconds without a successful
-               // connection.
-               this->OnTimeout();
-               this->OnError(I_ERR_TIMEOUT);
-               timeout = true;
-               this->state = I_ERROR;
-               this->ClosePending = true;
-               return true;
+               irc::sockets::aptosa(mask, 0, sa);
+               sa2cidr(*this, sa, 128);
+       }
+       else
+       {
+               unsigned char range = ConvToNum<unsigned char>(mask.substr(bits_chars + 1));
+               irc::sockets::aptosa(mask.substr(0, bits_chars), 0, sa);
+               sa2cidr(*this, sa, range);
        }
-       return this->FlushWriteBuffer();
 }
 
-bool InspSocket::Poll()
+std::string irc::sockets::cidr_mask::str() const
 {
-       if (!socket_ref[this->fd] || !ServerInstance->SE->HasFd(this->fd))
-               return false;
+       irc::sockets::sockaddrs sa;
+       sa.sa.sa_family = type;
 
-       int incoming = -1;
-       bool n = true;
+       unsigned char* base;
+       size_t len;
+       switch (type)
+       {
+               case AF_INET:
+                       base = (unsigned char*)&sa.in4.sin_addr;
+                       len = 4;
+                       break;
 
-       if ((fd < 0) || (fd > MAX_DESCRIPTORS) || (this->ClosePending))
-               return false;
+               case AF_INET6:
+                       base = (unsigned char*)&sa.in6.sin6_addr;
+                       len = 16;
+                       break;
+
+               case AF_UNIX:
+                       return sa.un.sun_path;
 
-       switch (this->state)
-       {
-               case I_RESOLVING:
-                       log(DEBUG,"State = I_RESOLVING, calling DoResolve()");
-                       return this->DoResolve();
-               break;
-               case I_CONNECTING:
-                       log(DEBUG,"State = I_CONNECTING");
-                       this->SetState(I_CONNECTED);
-                       /* Our socket was in write-state, so delete it and re-add it
-                        * in read-state.
-                        */
-                       ServerInstance->SE->DelFd(this->fd);
-                       ServerInstance->SE->AddFd(this->fd,true,X_ESTAB_MODULE);
-                       return this->OnConnected();
-               break;
-               case I_LISTENING:
-                       length = sizeof (client);
-                       incoming = accept (this->fd, (sockaddr*)&client,&length);
-                       this->SetQueues(incoming);
-                       this->OnIncomingConnection(incoming,inet_ntoa(client.sin_addr));
-                       return true;
-               break;
-               case I_CONNECTED:
-                       n = this->OnDataReady();
-                       /* Flush any pending, but not till after theyre done with the event
-                        * so there are less write calls involved.
-                        * Both FlushWriteBuffer AND the return result of OnDataReady must
-                        * return true for this to be ok.
-                        */
-                       if (this->FlushWriteBuffer())
-                               return false;
-                       return n;
-               break;
                default:
-               break;
+                       // If we have reached this point then we have encountered a bug.
+                       ServerInstance->Logs->Log("SOCKET", LOG_DEBUG, "BUG: irc::sockets::cidr_mask::str(): socket type %d is unknown!", type);
+                       return "<unknown>";
        }
-       return true;
-}
 
-void InspSocket::SetState(InspSocketState s)
-{
-       log(DEBUG,"Socket state change");
-       this->state = s;
+       memcpy(base, bits, len);
+       return sa.addr() + "/" + ConvToStr((int)length);
 }
 
-InspSocketState InspSocket::GetState()
+bool irc::sockets::cidr_mask::operator==(const cidr_mask& other) const
 {
-       return this->state;
+       return type == other.type && length == other.length &&
+               0 == memcmp(bits, other.bits, 16);
 }
 
-int InspSocket::GetFd()
+bool irc::sockets::cidr_mask::operator<(const cidr_mask& other) const
 {
-       return this->fd;
+       if (type != other.type)
+               return type < other.type;
+       if (length != other.length)
+               return length < other.length;
+       return memcmp(bits, other.bits, 16) < 0;
 }
 
-bool InspSocket::OnConnected() { return true; }
-void InspSocket::OnError(InspSocketError e) { return; }
-int InspSocket::OnDisconnect() { return 0; }
-int InspSocket::OnIncomingConnection(int newfd, char* ip) { return 0; }
-bool InspSocket::OnDataReady() { return true; }
-void InspSocket::OnTimeout() { return; }
-void InspSocket::OnClose() { return; }
-
-InspSocket::~InspSocket()
+bool irc::sockets::cidr_mask::match(const irc::sockets::sockaddrs& addr) const
 {
-       this->Close();
+       if (addr.family() != type)
+               return false;
+       irc::sockets::cidr_mask tmp(addr, length);
+       return tmp == *this;
 }