* | Inspire Internet Relay Chat Daemon |
* +------------------------------------+
*
- * Inspire is copyright (C) 2002-2004 ChatSpike-Dev.
- * E-mail:
- * <brain@chatspike.net>
- * <Craig@chatspike.net>
- *
- * Written by Craig Edwards, Craig McLure, and others.
+ * InspIRCd: (C) 2002-2010 InspIRCd Development Team
+ * See: http://wiki.inspircd.org/Credits
+ *
* This program is free but copyrighted software; see
* the file COPYING for details.
*
* ---------------------------------------------------
*/
-using namespace std;
-
-#include "inspircd_config.h"
-#include <sys/time.h>
-#include <sys/resource.h>
-#include <sys/types.h>
-#include <string>
-#include <unistd.h>
-#include <sstream>
-#include <iostream>
-#include <fstream>
-#include "socket.h"
#include "inspircd.h"
-#include "inspircd_io.h"
-#include "inspircd_util.h"
-#include "inspstring.h"
-#include "helperfuncs.h"
-
-extern FILE *log_file;
-extern int boundPortCount;
-extern int openSockfd[MAXSOCKS];
-extern time_t TIME;
-extern bool unlimitcore;
-extern int MaxConn;
-
-InspSocket::InspSocket()
+#include "socket.h"
+#include "socketengine.h"
+using irc::sockets::sockaddrs;
+
+/** This will bind a socket to a port. It works for UDP/TCP.
+ * It can only bind to IP addresses, if you wish to bind to hostnames
+ * you should first resolve them using class 'Resolver'.
+ */
+bool InspIRCd::BindSocket(int sockfd, int port, const char* addr, bool dolisten)
+{
+ sockaddrs servaddr;
+ int ret;
+
+ if ((*addr == '*' || *addr == '\0') && port == -1)
+ {
+ /* Port -1: Means UDP IPV4 port binding - Special case
+ * used by DNS engine.
+ */
+ memset(&servaddr, 0, sizeof(servaddr));
+ servaddr.in4.sin_family = AF_INET;
+ }
+ else if (!irc::sockets::aptosa(addr, port, servaddr))
+ return false;
+
+ ret = SE->Bind(sockfd, servaddr);
+
+ if (ret < 0)
+ {
+ return false;
+ }
+ else
+ {
+ if (dolisten)
+ {
+ if (SE->Listen(sockfd, Config->MaxConn) == -1)
+ {
+ this->Logs->Log("SOCKET",DEFAULT,"ERROR in listen(): %s",strerror(errno));
+ return false;
+ }
+ else
+ {
+ this->Logs->Log("SOCKET",DEBUG,"New socket binding for %d with listen: %s:%d", sockfd, addr, port);
+ SE->NonBlocking(sockfd);
+ return true;
+ }
+ }
+ else
+ {
+ this->Logs->Log("SOCKET",DEBUG,"New socket binding for %d without listen: %s:%d", sockfd, addr, port);
+ return true;
+ }
+ }
+}
+
+int InspIRCd::BindPorts(FailedPortList &failed_ports)
+{
+ int bound = 0;
+ std::vector<ListenSocket*> old_ports(ports.begin(), ports.end());
+
+ ConfigTagList tags = ServerInstance->Config->ConfTags("bind");
+ for(ConfigIter i = tags.first; i != tags.second; ++i)
+ {
+ ConfigTag* tag = i->second;
+ std::string porttag = tag->getString("port");
+ std::string Addr = tag->getString("address");
+
+ if (strncasecmp(Addr.c_str(), "::ffff:", 7) == 0)
+ this->Logs->Log("SOCKET",DEFAULT, "Using 4in6 (::ffff:) isn't recommended. You should bind IPv4 addresses directly instead.");
+
+ irc::portparser portrange(porttag, false);
+ int portno = -1;
+ while (0 != (portno = portrange.GetToken()))
+ {
+ irc::sockets::sockaddrs bindspec;
+ if (!irc::sockets::aptosa(Addr, portno, bindspec))
+ continue;
+ std::string bind_readable = bindspec.str();
+
+ bool skip = false;
+ for (std::vector<ListenSocket*>::iterator n = old_ports.begin(); n != old_ports.end(); ++n)
+ {
+ if ((**n).bind_desc == bind_readable)
+ {
+ skip = true;
+ old_ports.erase(n);
+ break;
+ }
+ }
+ if (!skip)
+ {
+ ListenSocket* ll = new ListenSocket(tag, bindspec);
+
+ if (ll->GetFd() > -1)
+ {
+ bound++;
+ ports.push_back(ll);
+ }
+ else
+ {
+ failed_ports.push_back(std::make_pair(bind_readable, strerror(errno)));
+ delete ll;
+ }
+ }
+ }
+ }
+
+ 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())
+ {
+ this->Logs->Log("SOCKET",DEFAULT,"Port bindings slipped out of vector, aborting close!");
+ break;
+ }
+
+ this->Logs->Log("SOCKET",DEFAULT, "Port binding %s was removed from the config file, closing.",
+ (**n).bind_desc.c_str());
+ delete *n;
+
+ // this keeps the iterator valid, pointing to the next element
+ n = ports.erase(n);
+ }
+
+ return bound;
+}
+
+bool irc::sockets::aptosa(const std::string& addr, int port, irc::sockets::sockaddrs& sa)
+{
+ memset(&sa, 0, sizeof(sa));
+ if (addr.empty() || addr.c_str()[0] == '*')
+ {
+ if (ServerInstance->Config->WildcardIPv6)
+ {
+ sa.in6.sin6_family = AF_INET6;
+ sa.in6.sin6_port = htons(port);
+ }
+ else
+ {
+ sa.in4.sin_family = AF_INET;
+ sa.in4.sin_port = htons(port);
+ }
+ 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;
+}
+
+int irc::sockets::sockaddrs::port() const
{
- this->state = I_DISCONNECTED;
+ if (sa.sa_family == AF_INET)
+ return ntohs(in4.sin_port);
+ if (sa.sa_family == AF_INET6)
+ return ntohs(in6.sin6_port);
+ return -1;
}
-InspSocket::InspSocket(std::string host, int port, bool listening)
+std::string irc::sockets::sockaddrs::addr() const
{
+ char addrv[INET6_ADDRSTRLEN+1];
+ if (sa.sa_family == AF_INET)
+ {
+ if (!inet_ntop(AF_INET, &in4.sin_addr, addrv, sizeof(addrv)))
+ return "";
+ return addrv;
+ }
+ else if (sa.sa_family == AF_INET6)
+ {
+ if (!inet_ntop(AF_INET6, &in6.sin6_addr, addrv, sizeof(addrv)))
+ return "";
+ return addrv;
+ }
+ return "";
}
-void InspSocket::Poll()
+bool irc::sockets::satoap(const irc::sockets::sockaddrs& sa, std::string& addr, int &port)
{
+ port = sa.port();
+ addr = sa.addr();
+ return !addr.empty();
}
-int InspSocket::OnConnected() { }
-int InspSocket::OnError() { }
-int InspSocket::OnDisconnect() { }
-int InspSocket::OnIncomingConnection() { }
+static const char all_zero[16] = {0,0,0,0, 0,0,0,0, 0,0,0,0, 0,0,0,0 };
+
+std::string irc::sockets::sockaddrs::str() const
+{
+ char buffer[MAXBUF];
+ if (sa.sa_family == AF_INET)
+ {
+ const uint8_t* bits = reinterpret_cast<const uint8_t*>(&in4.sin_addr);
+ sprintf(buffer, "%d.%d.%d.%d:%u", bits[0], bits[1], bits[2], bits[3], ntohs(in4.sin_port));
+ }
+ else if (sa.sa_family == AF_INET6)
+ {
+ buffer[0] = '[';
+ if (!inet_ntop(AF_INET6, &in6.sin6_addr, buffer+1, MAXBUF - 10))
+ return "<unknown>"; // should never happen, buffer is large enough
+ int len = strlen(buffer);
+ // no need for snprintf, buffer has at least 9 chars left, max short len = 5
+ sprintf(buffer + len, "]:%u", ntohs(in6.sin6_port));
+ }
+ else
+ return "<unknown>";
+ return std::string(buffer);
+}
+
+int irc::sockets::sockaddrs::sa_size() const
+{
+ if (sa.sa_family == AF_INET)
+ return sizeof(in4);
+ if (sa.sa_family == AF_INET6)
+ return sizeof(in6);
+ return 0;
+}
+
+static void sa2cidr(irc::sockets::cidr_mask& cidr, const irc::sockets::sockaddrs& sa, int range)
+{
+ const unsigned char* base;
+ cidr.type = sa.sa.sa_family;
+ if (cidr.type == AF_INET)
+ {
+ base = (unsigned char*)&sa.in4.sin_addr;
+ if (range > 32)
+ range = 32;
+ }
+ else if (cidr.type == AF_INET6)
+ {
+ base = (unsigned char*)&sa.in6.sin6_addr;
+ if (range > 128)
+ range = 128;
+ }
+ else
+ {
+ base = (unsigned char*)"";
+ range = 0;
+ }
+ cidr.length = range;
+ unsigned int border = range / 8;
+ unsigned int bitmask = (0xFF00 >> (range & 7)) & 0xFF;
+ for(unsigned int i=0; i < 16; i++)
+ {
+ if (i < border)
+ cidr.bits[i] = base[i];
+ else if (i == border)
+ cidr.bits[i] = base[i] & bitmask;
+ else
+ cidr.bits[i] = 0;
+ }
+}
+
+irc::sockets::cidr_mask::cidr_mask(const irc::sockets::sockaddrs& sa, int 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 (bits_chars == std::string::npos)
+ {
+ irc::sockets::aptosa(mask, 0, sa);
+ sa2cidr(*this, sa, 128);
+ }
+ else
+ {
+ int range = atoi(mask.substr(bits_chars + 1).c_str());
+ irc::sockets::aptosa(mask.substr(0, bits_chars), 0, sa);
+ sa2cidr(*this, sa, range);
+ }
+}
+
+std::string irc::sockets::cidr_mask::str() const
+{
+ irc::sockets::sockaddrs sa;
+ sa.sa.sa_family = type;
+ unsigned char* base;
+ int len;
+ if (type == AF_INET)
+ {
+ base = (unsigned char*)&sa.in4.sin_addr;
+ len = 4;
+ }
+ else if (type == AF_INET6)
+ {
+ base = (unsigned char*)&sa.in6.sin6_addr;
+ len = 16;
+ }
+ else
+ return "";
+ memcpy(base, bits, len);
+ return sa.addr() + "/" + ConvToStr((int)length);
+}
+
+bool irc::sockets::cidr_mask::operator==(const cidr_mask& other) const
+{
+ return type == other.type && length == other.length &&
+ 0 == memcmp(bits, other.bits, 16);
+}
+
+bool irc::sockets::cidr_mask::operator<(const cidr_mask& other) const
+{
+ return type < other.type || length < other.length ||
+ memcmp(bits, other.bits, 16) < 0;
+}
-InspSocket::~InspSocket()
+bool irc::sockets::cidr_mask::match(const irc::sockets::sockaddrs& addr) const
{
+ if (addr.sa.sa_family != type)
+ return false;
+ irc::sockets::cidr_mask tmp(addr, length);
+ return tmp == *this;
}
-/*
-int BindSocket (int sockfd, struct sockaddr_in client, struct sockaddr_in server, int port, char* addr)
-int OpenTCPSocket (void)
-*/