2 * InspIRCd -- Internet Relay Chat Daemon
4 * Copyright (C) 2009-2010 Daniel De Graaf <danieldg@inspircd.org>
5 * Copyright (C) 2007-2008 Robin Burchell <robin+git@viroteck.net>
6 * Copyright (C) 2005-2008 Craig Edwards <craigedwards@brainbox.cc>
7 * Copyright (C) 2007 Dennis Friis <peavey@inspircd.org>
8 * Copyright (C) 2006 Oliver Lupton <oliverlupton@gmail.com>
10 * This file is part of InspIRCd. InspIRCd is free software: you can
11 * redistribute it and/or modify it under the terms of the GNU General Public
12 * License as published by the Free Software Foundation, version 2.
14 * This program is distributed in the hope that it will be useful, but WITHOUT
15 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
16 * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
19 * You should have received a copy of the GNU General Public License
20 * along with this program. If not, see <http://www.gnu.org/licenses/>.
26 using irc::sockets::sockaddrs;
28 /** This will bind a socket to a port. It works for UDP/TCP.
29 * It can only bind to IP addresses, if you wish to bind to hostnames
30 * you should first resolve them using class 'Resolver'.
32 bool InspIRCd::BindSocket(int sockfd, int port, const char* addr, bool dolisten)
37 if ((*addr == '*' || *addr == '\0') && port == -1)
39 /* Port -1: Means UDP IPV4 port binding - Special case
42 memset(&servaddr, 0, sizeof(servaddr));
43 servaddr.in4.sin_family = AF_INET;
45 else if (!irc::sockets::aptosa(addr, port, servaddr))
48 ret = SocketEngine::Bind(sockfd, servaddr);
58 if (SocketEngine::Listen(sockfd, Config->MaxConn) == -1)
60 this->Logs->Log("SOCKET", LOG_DEFAULT, "ERROR in listen(): %s",strerror(errno));
65 this->Logs->Log("SOCKET", LOG_DEBUG, "New socket binding for %d with listen: %s:%d", sockfd, addr, port);
66 SocketEngine::NonBlocking(sockfd);
72 this->Logs->Log("SOCKET", LOG_DEBUG, "New socket binding for %d without listen: %s:%d", sockfd, addr, port);
78 int InspIRCd::BindPorts(FailedPortList &failed_ports)
81 std::vector<ListenSocket*> old_ports(ports.begin(), ports.end());
83 ConfigTagList tags = ServerInstance->Config->ConfTags("bind");
84 for(ConfigIter i = tags.first; i != tags.second; ++i)
86 ConfigTag* tag = i->second;
87 std::string porttag = tag->getString("port");
88 std::string Addr = tag->getString("address");
90 if (strncasecmp(Addr.c_str(), "::ffff:", 7) == 0)
91 this->Logs->Log("SOCKET", LOG_DEFAULT, "Using 4in6 (::ffff:) isn't recommended. You should bind IPv4 addresses directly instead.");
93 irc::portparser portrange(porttag, false);
95 while (0 != (portno = portrange.GetToken()))
97 irc::sockets::sockaddrs bindspec;
98 if (!irc::sockets::aptosa(Addr, portno, bindspec))
100 std::string bind_readable = bindspec.str();
103 for (std::vector<ListenSocket*>::iterator n = old_ports.begin(); n != old_ports.end(); ++n)
105 if ((**n).bind_desc == bind_readable)
107 (*n)->bind_tag = tag; // Replace tag, we know addr and port match, but other info (type, ssl) may not
108 (*n)->ResetIOHookProvider();
117 ListenSocket* ll = new ListenSocket(tag, bindspec);
119 if (ll->GetFd() > -1)
126 failed_ports.push_back(std::make_pair(bind_readable, strerror(errno)));
133 std::vector<ListenSocket*>::iterator n = ports.begin();
134 for (std::vector<ListenSocket*>::iterator o = old_ports.begin(); o != old_ports.end(); ++o)
136 while (n != ports.end() && *n != *o)
138 if (n == ports.end())
140 this->Logs->Log("SOCKET", LOG_DEFAULT, "Port bindings slipped out of vector, aborting close!");
144 this->Logs->Log("SOCKET", LOG_DEFAULT, "Port binding %s was removed from the config file, closing.",
145 (**n).bind_desc.c_str());
148 // this keeps the iterator valid, pointing to the next element
155 bool irc::sockets::aptosa(const std::string& addr, int port, irc::sockets::sockaddrs& sa)
157 memset(&sa, 0, sizeof(sa));
158 if (addr.empty() || addr.c_str()[0] == '*')
160 if (ServerInstance->Config->WildcardIPv6)
162 sa.in6.sin6_family = AF_INET6;
163 sa.in6.sin6_port = htons(port);
167 sa.in4.sin_family = AF_INET;
168 sa.in4.sin_port = htons(port);
172 else if (inet_pton(AF_INET, addr.c_str(), &sa.in4.sin_addr) > 0)
174 sa.in4.sin_family = AF_INET;
175 sa.in4.sin_port = htons(port);
178 else if (inet_pton(AF_INET6, addr.c_str(), &sa.in6.sin6_addr) > 0)
180 sa.in6.sin6_family = AF_INET6;
181 sa.in6.sin6_port = htons(port);
187 int irc::sockets::sockaddrs::port() const
189 if (sa.sa_family == AF_INET)
190 return ntohs(in4.sin_port);
191 if (sa.sa_family == AF_INET6)
192 return ntohs(in6.sin6_port);
196 std::string irc::sockets::sockaddrs::addr() const
198 char addrv[INET6_ADDRSTRLEN+1];
199 if (sa.sa_family == AF_INET)
201 if (!inet_ntop(AF_INET, &in4.sin_addr, addrv, sizeof(addrv)))
205 else if (sa.sa_family == AF_INET6)
207 if (!inet_ntop(AF_INET6, &in6.sin6_addr, addrv, sizeof(addrv)))
214 bool irc::sockets::satoap(const irc::sockets::sockaddrs& sa, std::string& addr, int &port)
218 return !addr.empty();
221 std::string irc::sockets::sockaddrs::str() const
223 if (sa.sa_family == AF_INET)
225 char ipaddr[INET_ADDRSTRLEN];
226 inet_ntop(AF_INET, &in4.sin_addr, ipaddr, sizeof(ipaddr));
227 return InspIRCd::Format("%s:%u", ipaddr, ntohs(in4.sin_port));
230 if (sa.sa_family == AF_INET6)
232 char ipaddr[INET6_ADDRSTRLEN];
233 inet_ntop(AF_INET6, &in6.sin6_addr, ipaddr, sizeof(ipaddr));
234 return InspIRCd::Format("[%s]:%u", ipaddr, ntohs(in6.sin6_port));
237 // This should never happen.
241 int irc::sockets::sockaddrs::sa_size() const
243 if (sa.sa_family == AF_INET)
245 if (sa.sa_family == AF_INET6)
250 bool irc::sockets::sockaddrs::operator==(const irc::sockets::sockaddrs& other) const
252 if (sa.sa_family != other.sa.sa_family)
254 if (sa.sa_family == AF_INET)
255 return (in4.sin_port == other.in4.sin_port) && (in4.sin_addr.s_addr == other.in4.sin_addr.s_addr);
256 if (sa.sa_family == AF_INET6)
257 return (in6.sin6_port == other.in6.sin6_port) && !memcmp(in6.sin6_addr.s6_addr, other.in6.sin6_addr.s6_addr, 16);
258 return !memcmp(this, &other, sizeof(*this));
261 static void sa2cidr(irc::sockets::cidr_mask& cidr, const irc::sockets::sockaddrs& sa, int range)
263 const unsigned char* base;
264 unsigned char target_byte;
265 cidr.type = sa.sa.sa_family;
267 memset(cidr.bits, 0, sizeof(cidr.bits));
269 if (cidr.type == AF_INET)
271 target_byte = sizeof(sa.in4.sin_addr);
272 base = (unsigned char*)&sa.in4.sin_addr;
276 else if (cidr.type == AF_INET6)
278 target_byte = sizeof(sa.in6.sin6_addr);
279 base = (unsigned char*)&sa.in6.sin6_addr;
289 unsigned int border = range / 8;
290 unsigned int bitmask = (0xFF00 >> (range & 7)) & 0xFF;
291 for(unsigned int i=0; i < target_byte; i++)
294 cidr.bits[i] = base[i];
295 else if (i == border)
296 cidr.bits[i] = base[i] & bitmask;
302 irc::sockets::cidr_mask::cidr_mask(const irc::sockets::sockaddrs& sa, int range)
304 sa2cidr(*this, sa, range);
307 irc::sockets::cidr_mask::cidr_mask(const std::string& mask)
309 std::string::size_type bits_chars = mask.rfind('/');
310 irc::sockets::sockaddrs sa;
312 if (bits_chars == std::string::npos)
314 irc::sockets::aptosa(mask, 0, sa);
315 sa2cidr(*this, sa, 128);
319 int range = ConvToInt(mask.substr(bits_chars + 1));
320 irc::sockets::aptosa(mask.substr(0, bits_chars), 0, sa);
321 sa2cidr(*this, sa, range);
325 std::string irc::sockets::cidr_mask::str() const
327 irc::sockets::sockaddrs sa;
328 sa.sa.sa_family = type;
333 base = (unsigned char*)&sa.in4.sin_addr;
336 else if (type == AF_INET6)
338 base = (unsigned char*)&sa.in6.sin6_addr;
343 memcpy(base, bits, len);
344 return sa.addr() + "/" + ConvToStr((int)length);
347 bool irc::sockets::cidr_mask::operator==(const cidr_mask& other) const
349 return type == other.type && length == other.length &&
350 0 == memcmp(bits, other.bits, 16);
353 bool irc::sockets::cidr_mask::operator<(const cidr_mask& other) const
355 if (type != other.type)
356 return type < other.type;
357 if (length != other.length)
358 return length < other.length;
359 return memcmp(bits, other.bits, 16) < 0;
362 bool irc::sockets::cidr_mask::match(const irc::sockets::sockaddrs& addr) const
364 if (addr.sa.sa_family != type)
366 irc::sockets::cidr_mask tmp(addr, length);