X-Git-Url: https://git.netwichtig.de/gitweb/?a=blobdiff_plain;f=src%2Fsocket.cpp;h=ccae48a6d7cc654e2f7db2f063e5191f4dbd3595;hb=0ed3ef9dee2cb8f4b0c37da218a2fd1eee8c31f6;hp=8a3636ca5cc4b43364878aaa48e6c8368dec5cc8;hpb=6a869d0701bbfe3c7a5e370793adfda4b5b45c65;p=user%2Fhenk%2Fcode%2Finspircd.git diff --git a/src/socket.cpp b/src/socket.cpp index 8a3636ca5..ccae48a6d 100644 --- a/src/socket.cpp +++ b/src/socket.cpp @@ -2,8 +2,8 @@ * | Inspire Internet Relay Chat Daemon | * +------------------------------------+ * - * InspIRCd: (C) 2002-2008 InspIRCd Development Team - * See: http://www.inspircd.org/wiki/index.php/Credits + * InspIRCd: (C) 2002-2009 InspIRCd Development Team + * See: http://wiki.inspircd.org/Credits * * This program is free but copyrighted software; see * the file COPYING for details. @@ -16,230 +16,32 @@ #include "inspircd.h" #include "socket.h" #include "socketengine.h" - -/* 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; - -ListenSocket::ListenSocket(InspIRCd* Instance, int port, char* addr) : ServerInstance(Instance), desc("plaintext"), bind_addr(addr), bind_port(port) -{ - this->SetFd(irc::sockets::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); - } - /* Saves needless allocations */ - if (socketcount == 0) - { - /* All instances of ListenSocket share these, so reference count it */ - ServerInstance->Logs->Log("SOCKET", DEBUG,"Allocate sockaddr structures"); - sock_us = new sockaddr[2]; - client = new sockaddr[2]; - raddr = new sockaddr[2]; - } - socketcount++; -} - -ListenSocket::~ListenSocket() -{ - if (this->GetFd() > -1) - { - ServerInstance->SE->DelFd(this); - 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 e, int err) -{ - switch (e) - { - case EVENT_ERROR: - ServerInstance->Logs->Log("SOCKET",DEFAULT,"ListenSocket::HandleEvent() received a socket engine error event! well shit! '%s'", strerror(err)); - break; - case EVENT_WRITE: - ServerInstance->Logs->Log("SOCKET",DEBUG,"*** BUG *** ListenSocket::HandleEvent() got a WRITE event!!!"); - break; - case EVENT_READ: - { - ServerInstance->Logs->Log("SOCKET",DEBUG,"HandleEvent for Listensoket"); - 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 = ServerInstance->SE->Accept(this, (sockaddr*)client, &length); - - if ((incomingSockfd > -1) && (!ServerInstance->SE->GetSockName(this, sock_us, &uslen))) - { - char buf[MAXBUF]; - char target[MAXBUF]; - - *target = *buf = '\0'; - -#ifdef IPV6 - 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 (getsockname(incomingSockfd, (sockaddr*) raddr, &raddrsz) == 0) - inet_ntop(AF_INET6, &((const sockaddr_in6*)raddr)->sin6_addr, target, sizeof(target)); - else - ServerInstance->Logs->Log("SOCKET", DEBUG, "Can't get peername: %s", strerror(errno)); - } - else -#endif - { - 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 (getsockname(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)); - } - ServerInstance->SE->NonBlocking(incomingSockfd); - ServerInstance->stats->statsAccept++; - ServerInstance->Users->AddUser(ServerInstance, incomingSockfd, in_port, false, this->family, client, target); - } - else - { - ServerInstance->SE->Shutdown(incomingSockfd, 2); - ServerInstance->SE->Close(incomingSockfd); - ServerInstance->stats->statsRefused++; - } - } - break; - } -} +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) { - /* We allocate 2 of these, because sockaddr_in6 is larger than sockaddr (ugh, hax) */ - sockaddr* servaddr = new sockaddr[2]; - memset(servaddr,0,sizeof(sockaddr)*2); - - int ret, size; + sockaddrs servaddr; + int ret; - if (*addr == '*') - addr = ""; + if (*addr == '*' || *addr == '\0') + addr = NULL; -#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[] servaddr; - return false; - } - - ((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 - { - /* No, its not */ - in_addr addy; - if (inet_pton(AF_INET, addr, &addy) < 1) - { - delete[] servaddr; - return false; - } - - ((sockaddr_in*)servaddr)->sin_family = AF_INET; - ((sockaddr_in*)servaddr)->sin_addr = addy; - ((sockaddr_in*)servaddr)->sin_port = htons(port); - size = sizeof(sockaddr_in); - } - } - else + if (port == -1 && !addr) { - if (port == -1) - { - /* Port -1: Means UDP IPV4 port binding - Special case - * used by DNS engine. - */ - ((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*)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*)servaddr)->sin_family = AF_INET; - if (*addr) - { - /* There is an address here. */ - in_addr addy; - if (inet_pton(AF_INET, addr, &addy) < 1) - { - delete[] servaddr; - return false; - } - ((sockaddr_in*)servaddr)->sin_addr = addy; - } - else - { - /* Bind ipv4 to all */ - ((sockaddr_in*)servaddr)->sin_addr.s_addr = htonl(INADDR_ANY); + /* Port -1: Means UDP IPV4 port binding - Special case + * used by DNS engine. + */ + memset(&servaddr, 0, sizeof(servaddr)); + servaddr.in4.sin_family = AF_INET; } - /* Bind ipv4 port number */ - ((sockaddr_in*)servaddr)->sin_port = htons(port); - size = sizeof(sockaddr_in); -#endif - ret = SE->Bind(sockfd, servaddr, size); - delete[] servaddr; + else if (!irc::sockets::aptosa(addr, port, &servaddr)) + return false; + + ret = SE->Bind(sockfd, &servaddr.sa, sa_size(servaddr)); if (ret < 0) { @@ -270,55 +72,57 @@ bool InspIRCd::BindSocket(int sockfd, int port, const char* addr, bool dolisten) } // Open a TCP Socket -int irc::sockets::OpenTCPSocket(char* addr, int socktype) +int irc::sockets::OpenTCPSocket(const char* addr, int socktype) { int sockfd; int on = 1; addr = addr; struct linger linger = { 0, 0 }; + if (!*addr) + { #ifdef IPV6 - if (strchr(addr,':') || (!*addr)) + sockfd = socket (PF_INET6, socktype, 0); + if (sockfd < 0) +#endif + sockfd = socket (PF_INET, socktype, 0); + } + else if (strchr(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)); + setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, &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)); + setsockopt(sockfd, SOL_SOCKET, SO_LINGER, &linger, sizeof(linger)); return (sockfd); } } -int InspIRCd::BindPorts(bool, int &ports_found, FailedPortList &failed_ports) +// XXX: it would be VERY nice to genericize this so all listen stuff (server/client) could use the one function. -- w00t +int InspIRCd::BindPorts(FailedPortList &failed_ports) { - char configToken[MAXBUF], Addr[MAXBUF], Type[MAXBUF]; + char configToken[MAXBUF], Addr[MAXBUF], Type[MAXBUF], Desc[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())); + std::vector old_ports(ports.begin(), ports.end()); - for (int count = 0; count < Config->ConfValueEnum(Config->config_data, "bind"); count++) + for (int count = 0; count < Config->ConfValueEnum("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); - + Config->ConfValue("bind", "port", count, configToken, MAXBUF); + Config->ConfValue("bind", "address", count, Addr, MAXBUF); + Config->ConfValue("bind", "type", count, Type, MAXBUF); + Config->ConfValue("bind", "ssl", count, Desc, 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); @@ -328,72 +132,152 @@ int InspIRCd::BindPorts(bool, int &ports_found, FailedPortList &failed_ports) if (*Addr == '*') *Addr = 0; + irc::sockets::sockaddrs bindspec; + irc::sockets::aptosa(Addr, portno, &bindspec); + std::string bind_readable = irc::sockets::satouser(&bindspec); + bool skip = false; - for (std::vector::iterator n = Config->ports.begin(); n != Config->ports.end(); ++n) + for (std::vector::iterator n = old_ports.begin(); n != old_ports.end(); ++n) { - if (((*n)->GetIP() == Addr) && ((*n)->GetPort() == portno)) + if ((*n)->GetBindDesc() == bind_readable) { 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; - } - } + old_ports.erase(n); + break; } } if (!skip) { - ListenSocket* ll = new ListenSocket(this, portno, Addr); + ClientListenSocket *ll = new ClientListenSocket(this, portno, Addr); if (ll->GetFd() > -1) { bound++; - Config->ports.push_back(ll); + ll->SetDescription(*Desc ? Desc : "plaintext"); + ports.push_back(ll); } else { - failed_ports.push_back(std::make_pair((*Addr ? Addr : "*") + std::string(":") + ConvToStr(portno), strerror(errno))); + failed_ports.push_back(std::make_pair(bind_readable, strerror(errno))); } - ports_found++; } } } } - /* XXX: Here, anything left in our copy list, close as removed */ - if (!started_with_nothing) + std::vector::iterator n = ports.begin(); + for (std::vector::iterator o = old_ports.begin(); o != old_ports.end(); ++o) { - for (size_t k = 0; k < old_ports.size(); ++k) + while (n != ports.end() && *n != *o) + n++; + if (n == ports.end()) { - 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->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; - } - } + this->Logs->Log("SOCKET",ERROR,"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)->GetBindDesc().c_str()); + delete *n; + + // this keeps the iterator valid, pointing to the next element + n = ports.erase(n); } return bound; } -const char* irc::sockets::insp_ntoa(insp_inaddr n) +bool irc::sockets::aptosa(const char* addr, int port, irc::sockets::sockaddrs* sa) { - static char buf[1024]; - inet_ntop(AF_FAMILY, &n, buf, sizeof(buf)); - return buf; + memset(sa, 0, sizeof(*sa)); + if (!addr || !*addr) + { +#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 + return true; + } + else if (inet_pton(AF_INET, addr, &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, &sa->in6.sin6_addr) > 0) + { + sa->in6.sin6_family = AF_INET6; + sa->in6.sin6_port = htons(port); + return true; + } + return false; } -int irc::sockets::insp_aton(const char* a, insp_inaddr* n) -{ - return inet_pton(AF_FAMILY, a, n); +bool irc::sockets::satoap(const irc::sockets::sockaddrs* sa, std::string& addr, int &port) { + char addrv[INET6_ADDRSTRLEN+1]; + if (sa->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; + } + else if (sa->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; + } + return false; } +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::satouser(const irc::sockets::sockaddrs* sa) { + char buffer[MAXBUF]; + if (sa->sa.sa_family == 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)); + } + } + else if (sa->sa.sa_family == 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)); + } + } + else + return ""; + return std::string(buffer); +} +int irc::sockets::sa_size(irc::sockets::sockaddrs& sa) +{ + if (sa.sa.sa_family == AF_INET) + return sizeof(sa.in4); + if (sa.sa.sa_family == AF_INET6) + return sizeof(sa.in6); + return 0; +}