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 #include "socketengine.h"
27 using irc::sockets::sockaddrs;
29 /** This will bind a socket to a port. It works for UDP/TCP.
30 * It can only bind to IP addresses, if you wish to bind to hostnames
31 * you should first resolve them using class 'Resolver'.
33 bool InspIRCd::BindSocket(int sockfd, int port, const char* addr, bool dolisten)
38 if ((*addr == '*' || *addr == '\0') && port == -1)
40 /* Port -1: Means UDP IPV4 port binding - Special case
43 memset(&servaddr, 0, sizeof(servaddr));
44 servaddr.in4.sin_family = AF_INET;
46 else if (!irc::sockets::aptosa(addr, port, servaddr))
49 ret = SE->Bind(sockfd, servaddr);
59 if (SE->Listen(sockfd, Config->MaxConn) == -1)
61 this->Logs->Log("SOCKET",DEFAULT,"ERROR in listen(): %s",strerror(errno));
66 this->Logs->Log("SOCKET",DEBUG,"New socket binding for %d with listen: %s:%d", sockfd, addr, port);
67 SE->NonBlocking(sockfd);
73 this->Logs->Log("SOCKET",DEBUG,"New socket binding for %d without listen: %s:%d", sockfd, addr, port);
79 int InspIRCd::BindPorts(FailedPortList &failed_ports)
82 std::vector<ListenSocket*> old_ports(ports.begin(), ports.end());
84 ConfigTagList tags = ServerInstance->Config->ConfTags("bind");
85 for(ConfigIter i = tags.first; i != tags.second; ++i)
87 ConfigTag* tag = i->second;
88 std::string porttag = tag->getString("port");
89 std::string Addr = tag->getString("address");
91 if (strncasecmp(Addr.c_str(), "::ffff:", 7) == 0)
92 this->Logs->Log("SOCKET",DEFAULT, "Using 4in6 (::ffff:) isn't recommended. You should bind IPv4 addresses directly instead.");
94 irc::portparser portrange(porttag, false);
96 while (0 != (portno = portrange.GetToken()))
98 irc::sockets::sockaddrs bindspec;
99 if (!irc::sockets::aptosa(Addr, portno, bindspec))
101 std::string bind_readable = bindspec.str();
104 for (std::vector<ListenSocket*>::iterator n = old_ports.begin(); n != old_ports.end(); ++n)
106 if ((**n).bind_desc == bind_readable)
115 ListenSocket* ll = new ListenSocket(tag, bindspec);
117 if (ll->GetFd() > -1)
124 failed_ports.push_back(std::make_pair(bind_readable, strerror(errno)));
131 std::vector<ListenSocket*>::iterator n = ports.begin();
132 for (std::vector<ListenSocket*>::iterator o = old_ports.begin(); o != old_ports.end(); ++o)
134 while (n != ports.end() && *n != *o)
136 if (n == ports.end())
138 this->Logs->Log("SOCKET",DEFAULT,"Port bindings slipped out of vector, aborting close!");
142 this->Logs->Log("SOCKET",DEFAULT, "Port binding %s was removed from the config file, closing.",
143 (**n).bind_desc.c_str());
146 // this keeps the iterator valid, pointing to the next element
153 bool irc::sockets::aptosa(const std::string& addr, int port, irc::sockets::sockaddrs& sa)
155 memset(&sa, 0, sizeof(sa));
156 if (addr.empty() || addr.c_str()[0] == '*')
158 if (ServerInstance->Config->WildcardIPv6)
160 sa.in6.sin6_family = AF_INET6;
161 sa.in6.sin6_port = htons(port);
165 sa.in4.sin_family = AF_INET;
166 sa.in4.sin_port = htons(port);
170 else if (inet_pton(AF_INET, addr.c_str(), &sa.in4.sin_addr) > 0)
172 sa.in4.sin_family = AF_INET;
173 sa.in4.sin_port = htons(port);
176 else if (inet_pton(AF_INET6, addr.c_str(), &sa.in6.sin6_addr) > 0)
178 sa.in6.sin6_family = AF_INET6;
179 sa.in6.sin6_port = htons(port);
185 int irc::sockets::sockaddrs::port() const
187 if (sa.sa_family == AF_INET)
188 return ntohs(in4.sin_port);
189 if (sa.sa_family == AF_INET6)
190 return ntohs(in6.sin6_port);
194 std::string irc::sockets::sockaddrs::addr() const
196 char addrv[INET6_ADDRSTRLEN+1];
197 if (sa.sa_family == AF_INET)
199 if (!inet_ntop(AF_INET, &in4.sin_addr, addrv, sizeof(addrv)))
203 else if (sa.sa_family == AF_INET6)
205 if (!inet_ntop(AF_INET6, &in6.sin6_addr, addrv, sizeof(addrv)))
212 bool irc::sockets::satoap(const irc::sockets::sockaddrs& sa, std::string& addr, int &port)
216 return !addr.empty();
219 static const char all_zero[16] = {0,0,0,0, 0,0,0,0, 0,0,0,0, 0,0,0,0 };
221 std::string irc::sockets::sockaddrs::str() const
224 if (sa.sa_family == AF_INET)
226 const uint8_t* bits = reinterpret_cast<const uint8_t*>(&in4.sin_addr);
227 sprintf(buffer, "%d.%d.%d.%d:%u", bits[0], bits[1], bits[2], bits[3], ntohs(in4.sin_port));
229 else if (sa.sa_family == AF_INET6)
232 if (!inet_ntop(AF_INET6, &in6.sin6_addr, buffer+1, MAXBUF - 10))
233 return "<unknown>"; // should never happen, buffer is large enough
234 int len = strlen(buffer);
235 // no need for snprintf, buffer has at least 9 chars left, max short len = 5
236 sprintf(buffer + len, "]:%u", ntohs(in6.sin6_port));
240 return std::string(buffer);
243 int irc::sockets::sockaddrs::sa_size() const
245 if (sa.sa_family == AF_INET)
247 if (sa.sa_family == AF_INET6)
252 bool irc::sockets::sockaddrs::operator==(const irc::sockets::sockaddrs& other) const
254 if (sa.sa_family != other.sa.sa_family)
256 if (sa.sa_family == AF_INET)
257 return (in4.sin_port == other.in4.sin_port) && (in4.sin_addr.s_addr == other.in4.sin_addr.s_addr);
258 if (sa.sa_family == AF_INET6)
259 return (in6.sin6_port == other.in6.sin6_port) && !memcmp(in6.sin6_addr.s6_addr, other.in6.sin6_addr.s6_addr, 16);
260 return !memcmp(this, &other, sizeof(*this));
263 static void sa2cidr(irc::sockets::cidr_mask& cidr, const irc::sockets::sockaddrs& sa, int range)
265 const unsigned char* base;
266 cidr.type = sa.sa.sa_family;
267 if (cidr.type == AF_INET)
269 base = (unsigned char*)&sa.in4.sin_addr;
273 else if (cidr.type == AF_INET6)
275 base = (unsigned char*)&sa.in6.sin6_addr;
281 base = (unsigned char*)"";
285 unsigned int border = range / 8;
286 unsigned int bitmask = (0xFF00 >> (range & 7)) & 0xFF;
287 for(unsigned int i=0; i < 16; i++)
290 cidr.bits[i] = base[i];
291 else if (i == border)
292 cidr.bits[i] = base[i] & bitmask;
298 irc::sockets::cidr_mask::cidr_mask(const irc::sockets::sockaddrs& sa, int range)
300 sa2cidr(*this, sa, range);
303 irc::sockets::cidr_mask::cidr_mask(const std::string& mask)
305 std::string::size_type bits_chars = mask.rfind('/');
306 irc::sockets::sockaddrs sa;
308 if (bits_chars == std::string::npos)
310 irc::sockets::aptosa(mask, 0, sa);
311 sa2cidr(*this, sa, 128);
315 int range = atoi(mask.substr(bits_chars + 1).c_str());
316 irc::sockets::aptosa(mask.substr(0, bits_chars), 0, sa);
317 sa2cidr(*this, sa, range);
321 std::string irc::sockets::cidr_mask::str() const
323 irc::sockets::sockaddrs sa;
324 sa.sa.sa_family = type;
329 base = (unsigned char*)&sa.in4.sin_addr;
332 else if (type == AF_INET6)
334 base = (unsigned char*)&sa.in6.sin6_addr;
339 memcpy(base, bits, len);
340 return sa.addr() + "/" + ConvToStr((int)length);
343 bool irc::sockets::cidr_mask::operator==(const cidr_mask& other) const
345 return type == other.type && length == other.length &&
346 0 == memcmp(bits, other.bits, 16);
349 bool irc::sockets::cidr_mask::operator<(const cidr_mask& other) const
351 if (type != other.type)
352 return type < other.type;
353 if (length != other.length)
354 return length < other.length;
355 return memcmp(bits, other.bits, 16) < 0;
358 bool irc::sockets::cidr_mask::match(const irc::sockets::sockaddrs& addr) const
360 if (addr.sa.sa_family != type)
362 irc::sockets::cidr_mask tmp(addr, length);