X-Git-Url: https://git.netwichtig.de/gitweb/?a=blobdiff_plain;f=src%2Fsocket.cpp;h=fc48d219eaf0f2f4185e2de42c964f0b8f9ab860;hb=18310fc8b7dbb0dcda3f0fa10d2b37e2b1457c10;hp=11a617e418591b6dbea39a42fa59e9a004ad6529;hpb=90550c9c650276e2830f677b8d2a509c911b6bdd;p=user%2Fhenk%2Fcode%2Finspircd.git diff --git a/src/socket.cpp b/src/socket.cpp index 11a617e41..fc48d219e 100644 --- a/src/socket.cpp +++ b/src/socket.cpp @@ -2,7 +2,7 @@ * | Inspire Internet Relay Chat Daemon | * +------------------------------------+ * - * InspIRCd: (C) 2002-2007 InspIRCd Development Team + * InspIRCd: (C) 2002-2008 InspIRCd Development Team * See: http://www.inspircd.org/wiki/index.php/Credits * * This program is free but copyrighted software; see @@ -11,15 +11,21 @@ * --------------------------------------------------- */ +/* $Core: libIRCDsocket */ + #include "inspircd.h" -#include -#include "configreader.h" #include "socket.h" #include "socketengine.h" #include "wildcard.h" using namespace irc::sockets; +/* Private static member data must be initialized in this manner */ +unsigned int ListenSocket::socketcount = 0; +sockaddr* ListenSocket::sock_us = NULL; +sockaddr* ListenSocket::client = NULL; +sockaddr* ListenSocket::raddr = NULL; + /* Used when comparing CIDR masks for the modulus bits left over. * A lot of ircd's seem to do this: * ((-1) << (8 - (mask % 8))) @@ -47,12 +53,19 @@ ListenSocket::ListenSocket(InspIRCd* Instance, int port, char* addr) : ServerIns if ((!*addr) || (strchr(addr,':'))) this->family = AF_INET6; else - this->family = AF_INET; -#else - this->family = AF_INET; #endif + this->family = AF_INET; Instance->SE->AddFd(this); } + /* Saves needless allocations */ + if (socketcount == 0) + { + /* All instances of ListenSocket share these, so reference count it */ + sock_us = new sockaddr[2]; + client = new sockaddr[2]; + raddr = new sockaddr[2]; + } + socketcount++; } ListenSocket::~ListenSocket() @@ -60,18 +73,24 @@ 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)); + ServerInstance->Logs->Log("SOCKET", DEBUG,"Shut down listener on fd %d", this->fd); + if (ServerInstance->SE->Shutdown(this, 2) || ServerInstance->SE->Close(this)) + ServerInstance->Logs->Log("SOCKET", DEBUG,"Failed to cancel listener: %s", strerror(errno)); this->fd = -1; } + socketcount--; + if (socketcount == 0) + { + delete[] sock_us; + delete[] client; + delete[] raddr; + } } -void ListenSocket::HandleEvent(EventType et, int errornum) +void ListenSocket::HandleEvent(EventType, int) { socklen_t uslen, length; // length of our port number int incomingSockfd, in_port; - int clients; #ifdef IPV6 if (this->family == AF_INET6) @@ -80,94 +99,74 @@ void ListenSocket::HandleEvent(EventType et, int errornum) length = sizeof(sockaddr_in6); } else +#endif { uslen = sizeof(sockaddr_in); length = sizeof(sockaddr_in); } -#else - uslen = sizeof(sockaddr_in); - length = sizeof(sockaddr_in); -#endif - /* - * This loop may make you wonder 'why' - simple reason. If we just sit here accept()ing until the - * metaphorical cows come home, then we could very well end up with unresponsiveness in a ddos style - * situation, which is not desirable (to put it mildly!). This will mean we'll stop accepting and get - * on with our lives after accepting enough clients to sink a metaphorical battleship. :) -- w00t - */ - for (clients = 0; clients < ServerInstance->Config->MaxConn; clients++) + incomingSockfd = ServerInstance->SE->Accept(this, (sockaddr*)client, &length); + + if ((incomingSockfd > -1) && (!ServerInstance->SE->GetSockName(this, sock_us, &uslen))) { - sockaddr* sock_us = new sockaddr[2]; // our port number - sockaddr* client = new sockaddr[2]; - - incomingSockfd = _accept (this->GetFd(), (sockaddr*)client, &length); + char buf[MAXBUF]; + char target[MAXBUF]; + + *target = *buf = '\0'; - 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); - } + if (this->family == AF_INET6) + { + in_port = ntohs(((sockaddr_in6*)sock_us)->sin6_port); + inet_ntop(AF_INET6, &((const sockaddr_in6*)client)->sin6_addr, buf, sizeof(buf)); + socklen_t raddrsz = sizeof(sockaddr_in6); + if (getpeername(incomingSockfd, (sockaddr*) raddr, &raddrsz) == 0) + inet_ntop(AF_INET6, &((const sockaddr_in6*)raddr)->sin6_addr, target, sizeof(target)); else - { - inet_ntop(AF_INET, &((const sockaddr_in*)client)->sin_addr, buf, sizeof(buf)); - in_port = ntohs(((sockaddr_in*)sock_us)->sin_port); - } -#else - inet_ntop(AF_INET, &((const sockaddr_in*)client)->sin_addr, buf, sizeof(buf)); - in_port = ntohs(((sockaddr_in*)sock_us)->sin_port); -#endif - 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); + ServerInstance->Logs->Log("SOCKET", DEBUG, "Can't get peername: %s", strerror(errno)); } else +#endif { - /* - * bail, bail, bail! if we get here, accept failed, meaning something is hardcore wrong. - * cut our losses and don't try soak up any more clients during this loop iteration. -- w00t - */ - shutdown(incomingSockfd,2); - close(incomingSockfd); - ServerInstance->stats->statsRefused++; - return; + inet_ntop(AF_INET, &((const sockaddr_in*)client)->sin_addr, buf, sizeof(buf)); + in_port = ntohs(((sockaddr_in*)sock_us)->sin_port); + socklen_t raddrsz = sizeof(sockaddr_in); + if (getpeername(incomingSockfd, (sockaddr*) raddr, &raddrsz) == 0) + inet_ntop(AF_INET, &((const sockaddr_in*)raddr)->sin_addr, target, sizeof(target)); + else + ServerInstance->Logs->Log("SOCKET", DEBUG, "Can't get peername: %s", strerror(errno)); + } - delete[] client; - delete[] sock_us; + ServerInstance->SE->NonBlocking(incomingSockfd); + + ServerInstance->stats->statsAccept++; + ServerInstance->Users->AddClient(ServerInstance, incomingSockfd, in_port, false, this->family, client, target); + } + else + { + ServerInstance->SE->Shutdown(incomingSockfd, 2); + ServerInstance->SE->Close(incomingSockfd); + ServerInstance->stats->statsRefused++; } } /* 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 */ + unsigned int divisor = mask_bits / 8; /* Number of whole bytes in the mask */ + unsigned int modulus = 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 */ + /* First (this is faster) compare the odd bits with logic ops */ if (modulus) if ((address[divisor] & inverted_bits[modulus]) != (mask[divisor] & inverted_bits[modulus])) /* If they dont match, return false */ return false; + /* Secondly (this is slower) compare the whole bytes */ + if (memcmp(address, mask, divisor)) + return false; + /* The address matches the mask, to mask_bits bits of mask */ return true; } @@ -319,42 +318,20 @@ bool irc::sockets::MatchCIDR(const char* address, const char* cidr_mask, bool ma 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) +bool InspIRCd::BindSocket(int sockfd, int port, const 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); + sockaddr* servaddr = new sockaddr[2]; + memset(servaddr,0,sizeof(sockaddr)*2); int ret, size; if (*addr == '*') - *addr = 0; + addr = ""; #ifdef IPV6 if (*addr) @@ -366,13 +343,13 @@ bool InspIRCd::BindSocket(int sockfd, int port, char* addr, bool dolisten) in6_addr addy; if (inet_pton(AF_INET6, addr, &addy) < 1) { - delete[] server; + delete[] servaddr; 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); + ((sockaddr_in6*)servaddr)->sin6_family = AF_INET6; + memcpy(&(((sockaddr_in6*)servaddr)->sin6_addr), &addy, sizeof(in6_addr)); + ((sockaddr_in6*)servaddr)->sin6_port = htons(port); size = sizeof(sockaddr_in6); } else @@ -381,13 +358,13 @@ bool InspIRCd::BindSocket(int sockfd, int port, char* addr, bool dolisten) in_addr addy; if (inet_pton(AF_INET, addr, &addy) < 1) { - delete[] server; + delete[] servaddr; return false; } - ((sockaddr_in*)server)->sin_family = AF_INET; - ((sockaddr_in*)server)->sin_addr = addy; - ((sockaddr_in*)server)->sin_port = htons(port); + ((sockaddr_in*)servaddr)->sin_family = AF_INET; + ((sockaddr_in*)servaddr)->sin_addr = addy; + ((sockaddr_in*)servaddr)->sin_port = htons(port); size = sizeof(sockaddr_in); } } @@ -398,45 +375,45 @@ bool InspIRCd::BindSocket(int sockfd, int port, char* addr, bool dolisten) /* 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; + ((sockaddr_in*)servaddr)->sin_family = AF_INET; + ((sockaddr_in*)servaddr)->sin_addr.s_addr = htonl(INADDR_ANY); + ((sockaddr_in*)servaddr)->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); + ((sockaddr_in6*)servaddr)->sin6_family = AF_INET6; + memset(&(((sockaddr_in6*)servaddr)->sin6_addr), 0, sizeof(in6_addr)); + ((sockaddr_in6*)servaddr)->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; + ((sockaddr_in*)servaddr)->sin_family = AF_INET; if (*addr) { /* There is an address here. */ in_addr addy; if (inet_pton(AF_INET, addr, &addy) < 1) { - delete[] server; + delete[] servaddr; return false; } - ((sockaddr_in*)server)->sin_addr = addy; + ((sockaddr_in*)servaddr)->sin_addr = addy; } else { /* Bind ipv4 to all */ - ((sockaddr_in*)server)->sin_addr.s_addr = htonl(INADDR_ANY); + ((sockaddr_in*)servaddr)->sin_addr.s_addr = htonl(INADDR_ANY); } /* Bind ipv4 port number */ - ((sockaddr_in*)server)->sin_port = htons(port); + ((sockaddr_in*)servaddr)->sin_port = htons(port); size = sizeof(sockaddr_in); #endif - ret = bind(sockfd, server, size); - delete[] server; + ret = SE->Bind(sockfd, servaddr, size); + delete[] servaddr; if (ret < 0) { @@ -446,21 +423,21 @@ bool InspIRCd::BindSocket(int sockfd, int port, char* addr, bool dolisten) { if (dolisten) { - if (listen(sockfd, Config->MaxConn) == -1) + if (SE->Listen(sockfd, Config->MaxConn) == -1) { - this->Log(DEFAULT,"ERROR in listen(): %s",strerror(errno)); + this->Logs->Log("SOCKET",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); + this->Logs->Log("SOCKET",DEBUG,"New socket binding for %d with listen: %s:%d", sockfd, addr, port); + SE->NonBlocking(sockfd); return true; } } else { - this->Log(DEBUG,"New socket binding for %d without listen: %s:%d", sockfd, addr, port); + this->Logs->Log("SOCKET",DEBUG,"New socket binding for %d without listen: %s:%d", sockfd, addr, port); return true; } } @@ -471,7 +448,8 @@ int irc::sockets::OpenTCPSocket(char* addr, int socktype) { int sockfd; int on = 1; - struct linger linger = { 0 }; + addr = addr; + struct linger linger = { 0, 0 }; #ifdef IPV6 if (strchr(addr,':') || (!*addr)) sockfd = socket (PF_INET6, socktype, 0); @@ -495,8 +473,7 @@ int irc::sockets::OpenTCPSocket(char* addr, int socktype) } } -/* XXX: Probably belongs in class InspIRCd */ -int InspIRCd::BindPorts(bool bail, int &ports_found, FailedPortList &failed_ports) +int InspIRCd::BindPorts(bool, int &ports_found, FailedPortList &failed_ports) { char configToken[MAXBUF], Addr[MAXBUF], Type[MAXBUF]; int bound = 0; @@ -512,7 +489,10 @@ int InspIRCd::BindPorts(bool bail, int &ports_found, FailedPortList &failed_port 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 (strncmp(Addr, "::ffff:", 7) == 0) + this->Logs->Log("SOCKET",DEFAULT, "Using 4in6 (::ffff:) isn't recommended. You should bind IPv4 addresses directly instead."); + if ((!*Type) || (!strcmp(Type,"clients"))) { irc::portparser portrange(configToken, false); @@ -566,7 +546,7 @@ int InspIRCd::BindPorts(bool bail, int &ports_found, FailedPortList &failed_port { 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); + this->Logs->Log("SOCKET",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;