1 /* +------------------------------------+
2 * | Inspire Internet Relay Chat Daemon |
3 * +------------------------------------+
5 * InspIRCd: (C) 2002-2009 InspIRCd Development Team
6 * See: http://wiki.inspircd.org/Credits
8 * This program is free but copyrighted software; see
9 * the file COPYING for details.
11 * ---------------------------------------------------
16 #include "socketengine.h"
17 using irc::sockets::sockaddrs;
19 /** This will bind a socket to a port. It works for UDP/TCP.
20 * It can only bind to IP addresses, if you wish to bind to hostnames
21 * you should first resolve them using class 'Resolver'.
23 bool InspIRCd::BindSocket(int sockfd, int port, const char* addr, bool dolisten)
28 if ((*addr == '*' || *addr == '\0') && port == -1)
30 /* Port -1: Means UDP IPV4 port binding - Special case
33 memset(&servaddr, 0, sizeof(servaddr));
34 servaddr.in4.sin_family = AF_INET;
36 else if (!irc::sockets::aptosa(addr, port, servaddr))
39 ret = SE->Bind(sockfd, &servaddr.sa, sa_size(servaddr));
49 if (SE->Listen(sockfd, Config->MaxConn) == -1)
51 this->Logs->Log("SOCKET",DEFAULT,"ERROR in listen(): %s",strerror(errno));
56 this->Logs->Log("SOCKET",DEBUG,"New socket binding for %d with listen: %s:%d", sockfd, addr, port);
57 SE->NonBlocking(sockfd);
63 this->Logs->Log("SOCKET",DEBUG,"New socket binding for %d without listen: %s:%d", sockfd, addr, port);
70 int irc::sockets::OpenTCPSocket(const std::string& addr, int socktype)
74 struct linger linger = { 0, 0 };
78 sockfd = socket (PF_INET6, socktype, 0);
81 sockfd = socket (PF_INET, socktype, 0);
83 else if (addr.find(':') != std::string::npos)
84 sockfd = socket (PF_INET6, socktype, 0);
86 sockfd = socket (PF_INET, socktype, 0);
94 setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, (char*)&on, sizeof(on));
95 /* This is BSD compatible, setting l_onoff to 0 is *NOT* http://web.irc.org/mla/ircd-dev/msg02259.html */
98 setsockopt(sockfd, SOL_SOCKET, SO_LINGER, (char*)&linger, sizeof(linger));
103 int InspIRCd::BindPorts(FailedPortList &failed_ports)
106 std::vector<ListenSocket*> old_ports(ports.begin(), ports.end());
108 ConfigTagList tags = ServerInstance->Config->ConfTags("bind");
109 for(ConfigIter i = tags.first; i != tags.second; ++i)
111 ConfigTag* tag = i->second;
112 std::string porttag = tag->getString("port");
113 std::string Addr = tag->getString("address");
115 if (strncmp(Addr.c_str(), "::ffff:", 7) == 0)
116 this->Logs->Log("SOCKET",DEFAULT, "Using 4in6 (::ffff:) isn't recommended. You should bind IPv4 addresses directly instead.");
118 irc::portparser portrange(porttag, false);
120 while (0 != (portno = portrange.GetToken()))
122 irc::sockets::sockaddrs bindspec;
123 irc::sockets::aptosa(Addr, portno, bindspec);
124 std::string bind_readable = irc::sockets::satouser(bindspec);
127 for (std::vector<ListenSocket*>::iterator n = old_ports.begin(); n != old_ports.end(); ++n)
129 if ((**n).bind_desc == bind_readable)
138 ListenSocket *ll = new ListenSocket(tag, Addr, portno);
139 if (ll->GetFd() > -1)
146 failed_ports.push_back(std::make_pair(bind_readable, strerror(errno)));
153 std::vector<ListenSocket*>::iterator n = ports.begin();
154 for (std::vector<ListenSocket*>::iterator o = old_ports.begin(); o != old_ports.end(); ++o)
156 while (n != ports.end() && *n != *o)
158 if (n == ports.end())
160 this->Logs->Log("SOCKET",ERROR,"Port bindings slipped out of vector, aborting close!");
164 this->Logs->Log("SOCKET",DEFAULT, "Port binding %s was removed from the config file, closing.",
165 (**n).bind_desc.c_str());
168 // this keeps the iterator valid, pointing to the next element
175 bool irc::sockets::aptosa(const std::string& addr, int port, irc::sockets::sockaddrs& sa)
177 memset(&sa, 0, sizeof(sa));
181 sa.in6.sin6_family = AF_INET6;
182 sa.in6.sin6_port = htons(port);
184 sa.in4.sin_family = AF_INET;
185 sa.in4.sin_port = htons(port);
189 else if (inet_pton(AF_INET, addr.c_str(), &sa.in4.sin_addr) > 0)
191 sa.in4.sin_family = AF_INET;
192 sa.in4.sin_port = htons(port);
195 else if (inet_pton(AF_INET6, addr.c_str(), &sa.in6.sin6_addr) > 0)
197 sa.in6.sin6_family = AF_INET6;
198 sa.in6.sin6_port = htons(port);
204 int irc::sockets::sockaddrs::port() const
206 if (sa.sa_family == AF_INET)
207 return ntohs(in4.sin_port);
208 if (sa.sa_family == AF_INET6)
209 return ntohs(in6.sin6_port);
213 std::string irc::sockets::sockaddrs::addr() const
215 char addrv[INET6_ADDRSTRLEN+1];
216 if (sa.sa_family == AF_INET)
218 if (!inet_ntop(AF_INET, &in4.sin_addr, addrv, sizeof(addrv)))
222 else if (sa.sa_family == AF_INET6)
224 if (!inet_ntop(AF_INET6, &in6.sin6_addr, addrv, sizeof(addrv)))
231 bool irc::sockets::satoap(const irc::sockets::sockaddrs& sa, std::string& addr, int &port)
235 return !addr.empty();
238 static const char all_zero[16] = {0,0,0,0, 0,0,0,0, 0,0,0,0, 0,0,0,0 };
240 std::string irc::sockets::sockaddrs::str() const
243 if (sa.sa_family == AF_INET)
245 if (in4.sin_addr.s_addr == 0)
247 sprintf(buffer, "*:%u", ntohs(in4.sin_port));
251 const uint8_t* bits = reinterpret_cast<const uint8_t*>(&in4.sin_addr);
252 sprintf(buffer, "%d.%d.%d.%d:%u", bits[0], bits[1], bits[2], bits[3], ntohs(in4.sin_port));
255 else if (sa.sa_family == AF_INET6)
257 if (!memcmp(all_zero, &in6.sin6_addr, 16))
259 sprintf(buffer, "*:%u", ntohs(in6.sin6_port));
264 if (!inet_ntop(AF_INET6, &in6.sin6_addr, buffer+1, MAXBUF - 10))
265 return "<unknown>"; // should never happen, buffer is large enough
266 int len = strlen(buffer);
267 // no need for snprintf, buffer has at least 9 chars left, max short len = 5
268 sprintf(buffer + len, "]:%u", ntohs(in6.sin6_port));
273 return std::string(buffer);
276 int irc::sockets::sockaddrs::sa_size() const
278 if (sa.sa_family == AF_INET)
280 if (sa.sa_family == AF_INET6)
285 static void sa2cidr(const irc::sockets::sockaddrs& sa, irc::sockets::cidr_mask& cidr, int range)
287 const unsigned char* base;
288 cidr.type = sa.sa.sa_family;
289 if (cidr.type == AF_INET)
291 base = (unsigned char*)&sa.in4.sin_addr;
295 else if (cidr.type == AF_INET6)
297 base = (unsigned char*)&sa.in6.sin6_addr;
303 base = (unsigned char*)"";
307 unsigned int border = range / 8;
308 unsigned int bitmask = (0xFF00 >> (range & 7)) & 0xFF;
309 for(unsigned int i=0; i < 16; i++)
312 cidr.bits[i] = base[i];
313 else if (i == border)
314 cidr.bits[i] = base[i] & bitmask;
320 irc::sockets::cidr_mask::cidr_mask(const irc::sockets::sockaddrs& sa, int range)
322 sa2cidr(sa, *this, range);
325 irc::sockets::cidr_mask::cidr_mask(const std::string& mask)
327 std::string::size_type bits_chars = mask.rfind('/');
328 irc::sockets::sockaddrs sa;
330 if (bits_chars == std::string::npos)
332 irc::sockets::aptosa(mask, 0, sa);
333 sa2cidr(sa, *this, 128);
337 int range = atoi(mask.substr(bits_chars + 1).c_str());
338 irc::sockets::aptosa(mask.substr(0, bits_chars), 0, sa);
339 sa2cidr(sa, *this, range);
343 std::string irc::sockets::cidr_mask::str() const
345 irc::sockets::sockaddrs sa;
346 sa.sa.sa_family = type;
351 base = (unsigned char*)&sa.in4.sin_addr;
354 else if (type == AF_INET6)
356 base = (unsigned char*)&sa.in6.sin6_addr;
361 memcpy(base, bits, len);
362 return sa.addr() + "/" + ConvToStr(length);
365 bool irc::sockets::cidr_mask::operator==(const cidr_mask& other) const
367 return type == other.type && length == other.length &&
368 0 == memcmp(bits, other.bits, 16);
371 bool irc::sockets::cidr_mask::operator<(const cidr_mask& other) const
373 return type < other.type || length < other.length ||
374 memcmp(bits, other.bits, 16) < 0;
377 bool irc::sockets::cidr_mask::match(const irc::sockets::sockaddrs& addr) const
379 if (addr.sa.sa_family != type)
381 irc::sockets::cidr_mask tmp(addr, length);