X-Git-Url: https://git.netwichtig.de/gitweb/?a=blobdiff_plain;f=src%2Fsocket.cpp;h=17f13bb8a22c22a47fc7e752a30b406b39bcce41;hb=754f0130893bacb2b69a32c3de9ed1b3da9659cd;hp=a92343d9131ca985ff36c47575c14203928a019b;hpb=b43fc66c17c2bef6dca66a966676b8128d5774ee;p=user%2Fhenk%2Fcode%2Finspircd.git diff --git a/src/socket.cpp b/src/socket.cpp index a92343d91..17f13bb8a 100644 --- a/src/socket.cpp +++ b/src/socket.cpp @@ -1,106 +1,27 @@ -/* +------------------------------------+ - * | Inspire Internet Relay Chat Daemon | - * +------------------------------------+ +/* + * InspIRCd -- Internet Relay Chat Daemon * - * InspIRCd: (C) 2002-2009 InspIRCd Development Team - * See: http://wiki.inspircd.org/Credits + * Copyright (C) 2009-2010 Daniel De Graaf + * Copyright (C) 2007-2008 Robin Burchell + * Copyright (C) 2005-2008 Craig Edwards + * Copyright (C) 2007 Dennis Friis + * Copyright (C) 2006 Oliver Lupton * - * This program is free but copyrighted software; see - * the file COPYING for details. + * This file is part of InspIRCd. InspIRCd is free software: you can + * redistribute it and/or modify it under the terms of the GNU General Public + * License as published by the Free Software Foundation, version 2. * - * --------------------------------------------------- + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS + * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more + * details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . */ -/* $Core */ #include "inspircd.h" -#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.sa, sa_size(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; - } - } -} - -// Open a TCP Socket -int irc::sockets::OpenTCPSocket(const std::string& addr, int socktype) -{ - int sockfd; - int on = 1; - struct linger linger = { 0, 0 }; - if (addr.empty()) - { -#ifdef IPV6 - sockfd = socket (PF_INET6, socktype, 0); - if (sockfd < 0) -#endif - sockfd = socket (PF_INET, socktype, 0); - } - else if (addr.find(':') != std::string::npos) - sockfd = socket (PF_INET6, socktype, 0); - else - sockfd = socket (PF_INET, socktype, 0); - - if (sockfd < 0) - { - return ERROR; - } - else - { - setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, (char*)&on, sizeof(on)); - /* This is BSD compatible, setting l_onoff to 0 is *NOT* http://web.irc.org/mla/ircd-dev/msg02259.html */ - linger.l_onoff = 1; - linger.l_linger = 1; - setsockopt(sockfd, SOL_SOCKET, SO_LINGER, (char*)&linger, sizeof(linger)); - return (sockfd); - } -} int InspIRCd::BindPorts(FailedPortList &failed_ports) { @@ -114,22 +35,26 @@ int InspIRCd::BindPorts(FailedPortList &failed_ports) std::string porttag = tag->getString("port"); std::string Addr = tag->getString("address"); - if (strncmp(Addr.c_str(), "::ffff:", 7) == 0) - this->Logs->Log("SOCKET",DEFAULT, "Using 4in6 (::ffff:) isn't recommended. You should bind IPv4 addresses directly instead."); + if (strncasecmp(Addr.c_str(), "::ffff:", 7) == 0) + this->Logs->Log("SOCKET", LOG_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; - irc::sockets::aptosa(Addr, portno, bindspec); - std::string bind_readable = irc::sockets::satouser(bindspec); + if (!irc::sockets::aptosa(Addr, portno, bindspec)) + continue; + std::string bind_readable = bindspec.str(); bool skip = false; for (std::vector::iterator n = old_ports.begin(); n != old_ports.end(); ++n) { if ((**n).bind_desc == bind_readable) { + (*n)->bind_tag = tag; // Replace tag, we know addr and port match, but other info (type, ssl) may not + (*n)->ResetIOHookProvider(); + skip = true; old_ports.erase(n); break; @@ -137,7 +62,8 @@ int InspIRCd::BindPorts(FailedPortList &failed_ports) } if (!skip) { - ListenSocket *ll = new ListenSocket(tag, Addr, portno); + ListenSocket* ll = new ListenSocket(tag, bindspec); + if (ll->GetFd() > -1) { bound++; @@ -159,11 +85,11 @@ int InspIRCd::BindPorts(FailedPortList &failed_ports) n++; if (n == ports.end()) { - this->Logs->Log("SOCKET",ERROR,"Port bindings slipped out of vector, aborting close!"); + this->Logs->Log("SOCKET", LOG_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.", + this->Logs->Log("SOCKET", LOG_DEFAULT, "Port binding %s was removed from the config file, closing.", (**n).bind_desc.c_str()); delete *n; @@ -177,15 +103,18 @@ int InspIRCd::BindPorts(FailedPortList &failed_ports) bool irc::sockets::aptosa(const std::string& addr, int port, irc::sockets::sockaddrs& sa) { memset(&sa, 0, sizeof(sa)); - if (addr.empty()) + if (addr.empty() || addr.c_str()[0] == '*') { -#ifdef IPV6 - 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); -#endif + 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) @@ -203,101 +132,185 @@ bool irc::sockets::aptosa(const std::string& addr, int port, irc::sockets::socka return false; } -bool irc::sockets::satoap(const irc::sockets::sockaddrs& sa, std::string& addr, int &port) +int irc::sockets::sockaddrs::port() const +{ + if (sa.sa_family == AF_INET) + return ntohs(in4.sin_port); + if (sa.sa_family == AF_INET6) + return ntohs(in6.sin6_port); + return -1; +} + +std::string irc::sockets::sockaddrs::addr() const { char addrv[INET6_ADDRSTRLEN+1]; - if (sa.sa.sa_family == AF_INET) + if (sa.sa_family == AF_INET) { - if (!inet_ntop(AF_INET, &sa.in4.sin_addr, addrv, sizeof(addrv))) - return false; - addr = addrv; - port = ntohs(sa.in4.sin_port); - return true; + if (!inet_ntop(AF_INET, &in4.sin_addr, addrv, sizeof(addrv))) + return ""; + return addrv; } - else if (sa.sa.sa_family == AF_INET6) + else if (sa.sa_family == AF_INET6) { - if (!inet_ntop(AF_INET6, &sa.in6.sin6_addr, addrv, sizeof(addrv))) - return false; - addr = addrv; - port = ntohs(sa.in6.sin6_port); - return true; + if (!inet_ntop(AF_INET6, &in6.sin6_addr, addrv, sizeof(addrv))) + return ""; + return addrv; } - return false; + return ""; +} + +bool irc::sockets::satoap(const irc::sockets::sockaddrs& sa, std::string& addr, int &port) +{ + port = sa.port(); + addr = sa.addr(); + return !addr.empty(); } -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 +{ + if (sa.sa_family == AF_INET) + { + char ipaddr[INET_ADDRSTRLEN]; + inet_ntop(AF_INET, &in4.sin_addr, ipaddr, sizeof(ipaddr)); + return InspIRCd::Format("%s:%u", ipaddr, ntohs(in4.sin_port)); + } + + if (sa.sa_family == AF_INET6) + { + char ipaddr[INET6_ADDRSTRLEN]; + inet_ntop(AF_INET6, &in6.sin6_addr, ipaddr, sizeof(ipaddr)); + return InspIRCd::Format("[%s]:%u", ipaddr, ntohs(in6.sin6_port)); + } + + // This should never happen. + return ""; +} + +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; +} -std::string irc::sockets::satouser(const irc::sockets::sockaddrs& sa) +bool irc::sockets::sockaddrs::operator==(const irc::sockets::sockaddrs& other) const { - char buffer[MAXBUF]; - if (sa.sa.sa_family == AF_INET) + if (sa.sa_family != other.sa.sa_family) + return false; + if (sa.sa_family == AF_INET) + return (in4.sin_port == other.in4.sin_port) && (in4.sin_addr.s_addr == other.in4.sin_addr.s_addr); + if (sa.sa_family == AF_INET6) + return (in6.sin6_port == other.in6.sin6_port) && !memcmp(in6.sin6_addr.s6_addr, other.in6.sin6_addr.s6_addr, 16); + return !memcmp(this, &other, sizeof(*this)); +} + +static void sa2cidr(irc::sockets::cidr_mask& cidr, const irc::sockets::sockaddrs& sa, int range) +{ + const unsigned char* base; + unsigned char target_byte; + cidr.type = sa.sa.sa_family; + + memset(cidr.bits, 0, sizeof(cidr.bits)); + + if (cidr.type == AF_INET) { - if (sa.in4.sin_addr.s_addr == 0) - { - sprintf(buffer, "*:%u", ntohs(sa.in4.sin_port)); - } - else - { - const uint8_t* bits = reinterpret_cast(&sa.in4.sin_addr); - sprintf(buffer, "%d.%d.%d.%d:%u", bits[0], bits[1], bits[2], bits[3], ntohs(sa.in4.sin_port)); - } + target_byte = sizeof(sa.in4.sin_addr); + base = (unsigned char*)&sa.in4.sin_addr; + if (range > 32) + range = 32; } - else if (sa.sa.sa_family == AF_INET6) + else if (cidr.type == AF_INET6) { - if (!memcmp(all_zero, &sa.in6.sin6_addr, 16)) - { - sprintf(buffer, "*:%u", ntohs(sa.in6.sin6_port)); - } - else - { - buffer[0] = '['; - if (!inet_ntop(AF_INET6, &sa.in6.sin6_addr, buffer+1, MAXBUF - 10)) - return ""; // 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(sa.in6.sin6_port)); - } + target_byte = sizeof(sa.in6.sin6_addr); + base = (unsigned char*)&sa.in6.sin6_addr; + if (range > 128) + range = 128; } else - return ""; - return std::string(buffer); + { + cidr.length = 0; + return; + } + cidr.length = range; + unsigned int border = range / 8; + unsigned int bitmask = (0xFF00 >> (range & 7)) & 0xFF; + for(unsigned int i=0; i < target_byte; i++) + { + if (i < border) + cidr.bits[i] = base[i]; + else if (i == border) + cidr.bits[i] = base[i] & bitmask; + else + return; + } } -int irc::sockets::sa_size(const irc::sockets::sockaddrs& sa) +irc::sockets::cidr_mask::cidr_mask(const irc::sockets::sockaddrs& sa, int range) { - if (sa.sa.sa_family == AF_INET) - return sizeof(sa.in4); - if (sa.sa.sa_family == AF_INET6) - return sizeof(sa.in6); - return 0; + 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 = ConvToInt(mask.substr(bits_chars + 1)); + irc::sockets::aptosa(mask.substr(0, bits_chars), 0, sa); + sa2cidr(*this, sa, range); + } } -std::string irc::sockets::mask(irc::sockets::sockaddrs sa, unsigned int range) +std::string irc::sockets::cidr_mask::str() const { + irc::sockets::sockaddrs sa; + sa.sa.sa_family = type; unsigned char* base; - unsigned int len; - if (sa.sa.sa_family == AF_INET) + int len; + if (type == AF_INET) { base = (unsigned char*)&sa.in4.sin_addr; len = 4; } - else if (sa.sa.sa_family == AF_INET6) + else if (type == AF_INET6) { base = (unsigned char*)&sa.in6.sin6_addr; len = 16; } else return ""; - if (range > 8*len) - range = 8*len; - unsigned int byte = range / 8; - unsigned int bits = (-1 << (range & 7)); - base[byte++] &= bits; - while (byte < len) - base[byte++] = 0; - int dummy; - std::string rv; - irc::sockets::satoap(sa, rv, dummy); - return rv + "/" + ConvToStr(range); + 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 +{ + if (type != other.type) + return type < other.type; + if (length != other.length) + return length < other.length; + return memcmp(bits, other.bits, 16) < 0; } +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; +}