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);
69 int InspIRCd::BindPorts(FailedPortList &failed_ports)
72 std::vector<ListenSocket*> old_ports(ports.begin(), ports.end());
74 ConfigTagList tags = ServerInstance->Config->ConfTags("bind");
75 for(ConfigIter i = tags.first; i != tags.second; ++i)
77 ConfigTag* tag = i->second;
78 std::string porttag = tag->getString("port");
79 std::string Addr = tag->getString("address");
81 if (strncasecmp(Addr.c_str(), "::ffff:", 7) == 0)
82 this->Logs->Log("SOCKET",DEFAULT, "Using 4in6 (::ffff:) isn't recommended. You should bind IPv4 addresses directly instead.");
84 irc::portparser portrange(porttag, false);
86 while (0 != (portno = portrange.GetToken()))
88 irc::sockets::sockaddrs bindspec;
89 irc::sockets::aptosa(Addr, portno, bindspec);
90 std::string bind_readable = irc::sockets::satouser(bindspec);
93 for (std::vector<ListenSocket*>::iterator n = old_ports.begin(); n != old_ports.end(); ++n)
95 if ((**n).bind_desc == bind_readable)
104 ListenSocket *ll = new ListenSocket(tag, Addr, portno);
105 if (ll->GetFd() > -1)
112 failed_ports.push_back(std::make_pair(bind_readable, strerror(errno)));
119 std::vector<ListenSocket*>::iterator n = ports.begin();
120 for (std::vector<ListenSocket*>::iterator o = old_ports.begin(); o != old_ports.end(); ++o)
122 while (n != ports.end() && *n != *o)
124 if (n == ports.end())
126 this->Logs->Log("SOCKET",ERROR,"Port bindings slipped out of vector, aborting close!");
130 this->Logs->Log("SOCKET",DEFAULT, "Port binding %s was removed from the config file, closing.",
131 (**n).bind_desc.c_str());
134 // this keeps the iterator valid, pointing to the next element
141 bool irc::sockets::aptosa(const std::string& addr, int port, irc::sockets::sockaddrs& sa)
143 memset(&sa, 0, sizeof(sa));
144 if (addr.empty() || addr.c_str()[0] == '*')
147 sa.in6.sin6_family = AF_INET6;
148 sa.in6.sin6_port = htons(port);
150 sa.in4.sin_family = AF_INET;
151 sa.in4.sin_port = htons(port);
155 else if (inet_pton(AF_INET, addr.c_str(), &sa.in4.sin_addr) > 0)
157 sa.in4.sin_family = AF_INET;
158 sa.in4.sin_port = htons(port);
161 else if (inet_pton(AF_INET6, addr.c_str(), &sa.in6.sin6_addr) > 0)
163 sa.in6.sin6_family = AF_INET6;
164 sa.in6.sin6_port = htons(port);
170 int irc::sockets::sockaddrs::port() const
172 if (sa.sa_family == AF_INET)
173 return ntohs(in4.sin_port);
174 if (sa.sa_family == AF_INET6)
175 return ntohs(in6.sin6_port);
179 std::string irc::sockets::sockaddrs::addr() const
181 char addrv[INET6_ADDRSTRLEN+1];
182 if (sa.sa_family == AF_INET)
184 if (!inet_ntop(AF_INET, &in4.sin_addr, addrv, sizeof(addrv)))
188 else if (sa.sa_family == AF_INET6)
190 if (!inet_ntop(AF_INET6, &in6.sin6_addr, addrv, sizeof(addrv)))
197 bool irc::sockets::satoap(const irc::sockets::sockaddrs& sa, std::string& addr, int &port)
201 return !addr.empty();
204 static const char all_zero[16] = {0,0,0,0, 0,0,0,0, 0,0,0,0, 0,0,0,0 };
206 std::string irc::sockets::sockaddrs::str() const
209 if (sa.sa_family == AF_INET)
212 if (in4.sin_addr.s_addr == 0)
214 sprintf(buffer, "*:%u", ntohs(in4.sin_port));
219 const uint8_t* bits = reinterpret_cast<const uint8_t*>(&in4.sin_addr);
220 sprintf(buffer, "%d.%d.%d.%d:%u", bits[0], bits[1], bits[2], bits[3], ntohs(in4.sin_port));
223 else if (sa.sa_family == AF_INET6)
226 if (!memcmp(all_zero, &in6.sin6_addr, 16))
228 sprintf(buffer, "*:%u", ntohs(in6.sin6_port));
234 if (!inet_ntop(AF_INET6, &in6.sin6_addr, buffer+1, MAXBUF - 10))
235 return "<unknown>"; // should never happen, buffer is large enough
236 int len = strlen(buffer);
237 // no need for snprintf, buffer has at least 9 chars left, max short len = 5
238 sprintf(buffer + len, "]:%u", ntohs(in6.sin6_port));
243 return std::string(buffer);
246 int irc::sockets::sockaddrs::sa_size() const
248 if (sa.sa_family == AF_INET)
250 if (sa.sa_family == AF_INET6)
255 static void sa2cidr(irc::sockets::cidr_mask& cidr, const irc::sockets::sockaddrs& sa, int range)
257 const unsigned char* base;
258 cidr.type = sa.sa.sa_family;
259 if (cidr.type == AF_INET)
261 base = (unsigned char*)&sa.in4.sin_addr;
265 else if (cidr.type == AF_INET6)
267 base = (unsigned char*)&sa.in6.sin6_addr;
273 base = (unsigned char*)"";
277 unsigned int border = range / 8;
278 unsigned int bitmask = (0xFF00 >> (range & 7)) & 0xFF;
279 for(unsigned int i=0; i < 16; i++)
282 cidr.bits[i] = base[i];
283 else if (i == border)
284 cidr.bits[i] = base[i] & bitmask;
290 irc::sockets::cidr_mask::cidr_mask(const irc::sockets::sockaddrs& sa, int range)
292 sa2cidr(*this, sa, range);
295 irc::sockets::cidr_mask::cidr_mask(const std::string& mask)
297 std::string::size_type bits_chars = mask.rfind('/');
298 irc::sockets::sockaddrs sa;
300 if (bits_chars == std::string::npos)
302 irc::sockets::aptosa(mask, 0, sa);
303 sa2cidr(*this, sa, 128);
307 int range = atoi(mask.substr(bits_chars + 1).c_str());
308 irc::sockets::aptosa(mask.substr(0, bits_chars), 0, sa);
309 sa2cidr(*this, sa, range);
313 std::string irc::sockets::cidr_mask::str() const
315 irc::sockets::sockaddrs sa;
316 sa.sa.sa_family = type;
321 base = (unsigned char*)&sa.in4.sin_addr;
324 else if (type == AF_INET6)
326 base = (unsigned char*)&sa.in6.sin6_addr;
331 memcpy(base, bits, len);
332 return sa.addr() + "/" + ConvToStr(length);
335 bool irc::sockets::cidr_mask::operator==(const cidr_mask& other) const
337 return type == other.type && length == other.length &&
338 0 == memcmp(bits, other.bits, 16);
341 bool irc::sockets::cidr_mask::operator<(const cidr_mask& other) const
343 return type < other.type || length < other.length ||
344 memcmp(bits, other.bits, 16) < 0;
347 bool irc::sockets::cidr_mask::match(const irc::sockets::sockaddrs& addr) const
349 if (addr.sa.sa_family != type)
351 irc::sockets::cidr_mask tmp(addr, length);