X-Git-Url: https://git.netwichtig.de/gitweb/?a=blobdiff_plain;f=src%2Fsocket.cpp;h=e73d01af9c37ed37fbdd1909b95dd83dbba0e5af;hb=a785f350fd584d87f3b84bbaff569ecb59c29f04;hp=d400a03230eff1a731fefadc77e5b69cd2738c28;hpb=bab14f0dd2345c9d7dcbc47c918563709e1ac094;p=user%2Fhenk%2Fcode%2Finspircd.git diff --git a/src/socket.cpp b/src/socket.cpp index d400a0323..e73d01af9 100644 --- a/src/socket.cpp +++ b/src/socket.cpp @@ -1 +1,370 @@ -/* +------------------------------------+ * | Inspire Internet Relay Chat Daemon | * +------------------------------------+ * * InspIRCd: (C) 2002-2007 InspIRCd Development Team * See: http://www.inspircd.org/wiki/index.php/Credits * * This program is free but copyrighted software; see * the file COPYING for details. * * --------------------------------------------------- */ #include "inspircd.h" #include #include "configreader.h" #include "socket.h" #include "socketengine.h" #include "wildcard.h" using namespace irc::sockets; /* Used when comparing CIDR masks for the modulus bits left over. * A lot of ircd's seem to do this: * ((-1) << (8 - (mask % 8))) * But imho, it sucks in comparison to a nice neat lookup table. */ const unsigned char inverted_bits[8] = { 0x00, /* 00000000 - 0 bits - never actually used */ 0x80, /* 10000000 - 1 bits */ 0xC0, /* 11000000 - 2 bits */ 0xE0, /* 11100000 - 3 bits */ 0xF0, /* 11110000 - 4 bits */ 0xF8, /* 11111000 - 5 bits */ 0xFC, /* 11111100 - 6 bits */ 0xFE /* 11111110 - 7 bits */ }; ListenSocket::ListenSocket(InspIRCd* Instance, int port, char* addr) : ServerInstance(Instance), desc("plaintext"), bind_addr(addr), bind_port(port) { this->SetFd(OpenTCPSocket(addr)); if (this->GetFd() > -1) { if (!Instance->BindSocket(this->fd,port,addr)) this->fd = -1; #ifdef IPV6 if ((!*addr) || (strchr(addr,':'))) this->family = AF_INET6; else #endif this->family = AF_INET; Instance->SE->AddFd(this); } } ListenSocket::~ListenSocket() { if (this->GetFd() > -1) { ServerInstance->SE->DelFd(this); ServerInstance->Log(DEBUG,"Shut down listener on fd %d", this->fd); if (shutdown(this->fd, 2) || close(this->fd)) ServerInstance->Log(DEBUG,"Failed to cancel listener: %s", strerror(errno)); this->fd = -1; } } void ListenSocket::HandleEvent(EventType et, int errornum) { sockaddr* sock_us = new sockaddr[2]; // our port number sockaddr* client = new sockaddr[2]; socklen_t uslen, length; // length of our port number int incomingSockfd, in_port; #ifdef IPV6 if (this->family == AF_INET6) { uslen = sizeof(sockaddr_in6); length = sizeof(sockaddr_in6); } else #endif { uslen = sizeof(sockaddr_in); length = sizeof(sockaddr_in); } incomingSockfd = _accept (this->GetFd(), (sockaddr*)client, &length); if ((incomingSockfd > -1) && (!_getsockname(incomingSockfd, sock_us, &uslen))) { char buf[MAXBUF]; #ifdef IPV6 if (this->family == AF_INET6) { inet_ntop(AF_INET6, &((const sockaddr_in6*)client)->sin6_addr, buf, sizeof(buf)); in_port = ntohs(((sockaddr_in6*)sock_us)->sin6_port); } else #endif { inet_ntop(AF_INET, &((const sockaddr_in*)client)->sin_addr, buf, sizeof(buf)); in_port = ntohs(((sockaddr_in*)sock_us)->sin_port); } NonBlocking(incomingSockfd); if (ServerInstance->Config->GetIOHook(in_port)) { try { ServerInstance->Config->GetIOHook(in_port)->OnRawSocketAccept(incomingSockfd, buf, in_port); } catch (CoreException& modexcept) { ServerInstance->Log(DEBUG,"%s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason()); } } ServerInstance->stats->statsAccept++; userrec::AddClient(ServerInstance, incomingSockfd, in_port, false, this->family, client); } else { shutdown(incomingSockfd,2); close(incomingSockfd); ServerInstance->stats->statsRefused++; } delete[] client; delete[] sock_us; } /* Match raw bytes using CIDR bit matching, used by higher level MatchCIDR() */ bool irc::sockets::MatchCIDRBits(unsigned char* address, unsigned char* mask, unsigned int mask_bits) { unsigned int modulus = mask_bits % 8; /* Number of whole bytes in the mask */ unsigned int divisor = mask_bits / 8; /* Remaining bits in the mask after whole bytes are dealt with */ /* First compare the whole bytes, if they dont match, return false */ if (memcmp(address, mask, divisor)) return false; /* Now if there are any remainder bits, we compare them with logic AND */ if (modulus) if ((address[divisor] & inverted_bits[modulus]) != (mask[divisor] & inverted_bits[modulus])) /* If they dont match, return false */ return false; /* The address matches the mask, to mask_bits bits of mask */ return true; } /* Match CIDR, but dont attempt to match() against leading *!*@ sections */ bool irc::sockets::MatchCIDR(const char* address, const char* cidr_mask) { return MatchCIDR(address, cidr_mask, false); } /* Match CIDR strings, e.g. 127.0.0.1 to 127.0.0.0/8 or 3ffe:1:5:6::8 to 3ffe:1::0/32 * If you have a lot of hosts to match, youre probably better off building your mask once * and then using the lower level MatchCIDRBits directly. * * This will also attempt to match any leading usernames or nicknames on the mask, using * match(), when match_with_username is true. */ bool irc::sockets::MatchCIDR(const char* address, const char* cidr_mask, bool match_with_username) { unsigned char addr_raw[16]; unsigned char mask_raw[16]; unsigned int bits = 0; char* mask = NULL; /* The caller is trying to match ident@/bits. * Chop off the ident@ portion, use match() on it * seperately. */ if (match_with_username) { /* Duplicate the strings, and try to find the position * of the @ symbol in each */ char* address_dupe = strdup(address); char* cidr_dupe = strdup(cidr_mask); /* Use strchr not strrchr, because its going to be nearer to the left */ char* username_mask_pos = strrchr(cidr_dupe, '@'); char* username_addr_pos = strrchr(address_dupe, '@'); /* Both strings have an @ symbol in them */ if (username_mask_pos && username_addr_pos) { /* Zero out the location of the @ symbol */ *username_mask_pos = *username_addr_pos = 0; /* Try and match() the strings before the @ * symbols, and recursively call MatchCIDR without * username matching enabled to match the host part. */ bool result = (match(address_dupe, cidr_dupe) && MatchCIDR(username_addr_pos + 1, username_mask_pos + 1, false)); /* Free the stuff we created */ free(address_dupe); free(cidr_dupe); /* Return a result */ return result; } else { /* One or both didnt have an @ in, * just match as CIDR */ free(address_dupe); free(cidr_dupe); mask = strdup(cidr_mask); } } else { /* Make a copy of the cidr mask string, * we're going to change it */ mask = strdup(cidr_mask); } in_addr address_in4; in_addr mask_in4; /* Use strrchr for this, its nearer to the right */ char* bits_chars = strrchr(mask,'/'); if (bits_chars) { bits = atoi(bits_chars + 1); *bits_chars = 0; } else { /* No 'number of bits' field! */ free(mask); return false; } #ifdef SUPPORT_IP6LINKS in6_addr address_in6; in6_addr mask_in6; if (inet_pton(AF_INET6, address, &address_in6) > 0) { if (inet_pton(AF_INET6, mask, &mask_in6) > 0) { memcpy(&addr_raw, &address_in6.s6_addr, 16); memcpy(&mask_raw, &mask_in6.s6_addr, 16); if (bits > 128) bits = 128; } else { /* The address was valid ipv6, but the mask * that goes with it wasnt. */ free(mask); return false; } } else #endif if (inet_pton(AF_INET, address, &address_in4) > 0) { if (inet_pton(AF_INET, mask, &mask_in4) > 0) { memcpy(&addr_raw, &address_in4.s_addr, 4); memcpy(&mask_raw, &mask_in4.s_addr, 4); if (bits > 32) bits = 32; } else { /* The address was valid ipv4, * but the mask that went with it wasnt. */ free(mask); return false; } } else { /* The address was neither ipv4 or ipv6 */ free(mask); return false; } /* Low-level-match the bits in the raw data */ free(mask); return MatchCIDRBits(addr_raw, mask_raw, bits); } void irc::sockets::Blocking(int s) { #ifndef WIN32 int flags = fcntl(s, F_GETFL, 0); fcntl(s, F_SETFL, flags ^ O_NONBLOCK); #else unsigned long opt = 0; ioctlsocket(s, FIONBIO, &opt); #endif } void irc::sockets::NonBlocking(int s) { #ifndef WIN32 int flags = fcntl(s, F_GETFL, 0); fcntl(s, F_SETFL, flags | O_NONBLOCK); #else unsigned long opt = 1; ioctlsocket(s, FIONBIO, &opt); #endif } /** 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, char* addr, bool dolisten) { /* We allocate 2 of these, because sockaddr_in6 is larger than sockaddr (ugh, hax) */ sockaddr* server = new sockaddr[2]; memset(server,0,sizeof(sockaddr)*2); int ret, size; if (*addr == '*') *addr = 0; #ifdef IPV6 if (*addr) { /* There is an address here. Is it ipv6? */ if (strchr(addr,':')) { /* Yes it is */ in6_addr addy; if (inet_pton(AF_INET6, addr, &addy) < 1) { delete[] server; return false; } ((sockaddr_in6*)server)->sin6_family = AF_INET6; memcpy(&(((sockaddr_in6*)server)->sin6_addr), &addy, sizeof(in6_addr)); ((sockaddr_in6*)server)->sin6_port = htons(port); size = sizeof(sockaddr_in6); } else { /* No, its not */ in_addr addy; if (inet_pton(AF_INET, addr, &addy) < 1) { delete[] server; return false; } ((sockaddr_in*)server)->sin_family = AF_INET; ((sockaddr_in*)server)->sin_addr = addy; ((sockaddr_in*)server)->sin_port = htons(port); size = sizeof(sockaddr_in); } } else { if (port == -1) { /* Port -1: Means UDP IPV4 port binding - Special case * used by DNS engine. */ ((sockaddr_in*)server)->sin_family = AF_INET; ((sockaddr_in*)server)->sin_addr.s_addr = htonl(INADDR_ANY); ((sockaddr_in*)server)->sin_port = 0; size = sizeof(sockaddr_in); } else { /* Theres no address here, default to ipv6 bind to all */ ((sockaddr_in6*)server)->sin6_family = AF_INET6; memset(&(((sockaddr_in6*)server)->sin6_addr), 0, sizeof(in6_addr)); ((sockaddr_in6*)server)->sin6_port = htons(port); size = sizeof(sockaddr_in6); } } #else /* If we aren't built with ipv6, the choice becomes simple */ ((sockaddr_in*)server)->sin_family = AF_INET; if (*addr) { /* There is an address here. */ in_addr addy; if (inet_pton(AF_INET, addr, &addy) < 1) { delete[] server; return false; } ((sockaddr_in*)server)->sin_addr = addy; } else { /* Bind ipv4 to all */ ((sockaddr_in*)server)->sin_addr.s_addr = htonl(INADDR_ANY); } /* Bind ipv4 port number */ ((sockaddr_in*)server)->sin_port = htons(port); size = sizeof(sockaddr_in); #endif ret = bind(sockfd, server, size); delete[] server; if (ret < 0) { return false; } else { if (dolisten) { if (listen(sockfd, Config->MaxConn) == -1) { this->Log(DEFAULT,"ERROR in listen(): %s",strerror(errno)); return false; } else { this->Log(DEBUG,"New socket binding for %d with listen: %s:%d", sockfd, addr, port); NonBlocking(sockfd); return true; } } else { this->Log(DEBUG,"New socket binding for %d without listen: %s:%d", sockfd, addr, port); return true; } } } // Open a TCP Socket int irc::sockets::OpenTCPSocket(char* addr, int socktype) { int sockfd; int on = 1; struct linger linger = { 0 }; #ifdef IPV6 if (strchr(addr,':') || (!*addr)) sockfd = socket (PF_INET6, socktype, 0); else sockfd = socket (PF_INET, socktype, 0); if (sockfd < 0) #else if ((sockfd = socket (PF_INET, socktype, 0)) < 0) #endif { 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); } } /* XXX: Probably belongs in class InspIRCd */ int InspIRCd::BindPorts(bool bail, int &ports_found, FailedPortList &failed_ports) { char configToken[MAXBUF], Addr[MAXBUF], Type[MAXBUF]; int bound = 0; bool started_with_nothing = (Config->ports.size() == 0); std::vector > old_ports; /* XXX: Make a copy of the old ip/port pairs here */ for (std::vector::iterator o = Config->ports.begin(); o != Config->ports.end(); ++o) old_ports.push_back(make_pair((*o)->GetIP(), (*o)->GetPort())); for (int count = 0; count < Config->ConfValueEnum(Config->config_data, "bind"); count++) { Config->ConfValue(Config->config_data, "bind", "port", count, configToken, MAXBUF); Config->ConfValue(Config->config_data, "bind", "address", count, Addr, MAXBUF); Config->ConfValue(Config->config_data, "bind", "type", count, Type, MAXBUF); if ((!*Type) || (!strcmp(Type,"clients"))) { irc::portparser portrange(configToken, false); int portno = -1; while ((portno = portrange.GetToken())) { if (*Addr == '*') *Addr = 0; bool skip = false; for (std::vector::iterator n = Config->ports.begin(); n != Config->ports.end(); ++n) { if (((*n)->GetIP() == Addr) && ((*n)->GetPort() == portno)) { skip = true; /* XXX: Here, erase from our copy of the list */ for (std::vector >::iterator k = old_ports.begin(); k != old_ports.end(); ++k) { if ((k->first == Addr) && (k->second == portno)) { old_ports.erase(k); break; } } } } if (!skip) { ListenSocket* ll = new ListenSocket(this, portno, Addr); if (ll->GetFd() > -1) { bound++; Config->ports.push_back(ll); } else { failed_ports.push_back(std::make_pair(Addr, portno)); } ports_found++; } } } } /* XXX: Here, anything left in our copy list, close as removed */ if (!started_with_nothing) { for (size_t k = 0; k < old_ports.size(); ++k) { for (std::vector::iterator n = Config->ports.begin(); n != Config->ports.end(); ++n) { if (((*n)->GetIP() == old_ports[k].first) && ((*n)->GetPort() == old_ports[k].second)) { this->Log(DEFAULT,"Port binding %s:%d was removed from the config file, closing.", old_ports[k].first.c_str(), old_ports[k].second); delete *n; Config->ports.erase(n); break; } } } } return bound; } const char* irc::sockets::insp_ntoa(insp_inaddr n) { static char buf[1024]; inet_ntop(AF_FAMILY, &n, buf, sizeof(buf)); return buf; } int irc::sockets::insp_aton(const char* a, insp_inaddr* n) { return inet_pton(AF_FAMILY, a, n); } \ No newline at end of file +/* + * InspIRCd -- Internet Relay Chat Daemon + * + * 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 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 . + */ + + +#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); + + 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 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::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 + 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::iterator n = ports.begin(); + for (std::vector::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 +{ + 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_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 ""; +} + +bool irc::sockets::satoap(const irc::sockets::sockaddrs& sa, std::string& addr, int &port) +{ + port = sa.port(); + addr = sa.addr(); + return !addr.empty(); +} + +std::string irc::sockets::sockaddrs::str() const +{ + char buffer[MAXBUF]; + if (sa.sa_family == AF_INET) + { + const uint8_t* bits = reinterpret_cast(&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 ""; // 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 ""; + 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; +} + +bool irc::sockets::sockaddrs::operator==(const irc::sockets::sockaddrs& other) const +{ + 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) + { + target_byte = sizeof(sa.in4.sin_addr); + base = (unsigned char*)&sa.in4.sin_addr; + if (range > 32) + range = 32; + } + else if (cidr.type == AF_INET6) + { + target_byte = sizeof(sa.in6.sin6_addr); + base = (unsigned char*)&sa.in6.sin6_addr; + if (range > 128) + range = 128; + } + else + { + 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; + } +} + +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 = ConvToInt(mask.substr(bits_chars + 1)); + 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 +{ + 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; +} +