X-Git-Url: https://git.netwichtig.de/gitweb/?a=blobdiff_plain;f=src%2Finspsocket.cpp;h=08b8f4cd698c2fa907b9d0f41494fd059c9210ff;hb=49369545e34e9d16d53c6c62eb8659a590af62ed;hp=4264700f54bd02cb6a7fe2c8942758cc2b7369ce;hpb=13153694df045d24217658077c7d223d269504b5;p=user%2Fhenk%2Fcode%2Finspircd.git diff --git a/src/inspsocket.cpp b/src/inspsocket.cpp index 4264700f5..08b8f4cd6 100644 --- a/src/inspsocket.cpp +++ b/src/inspsocket.cpp @@ -2,83 +2,76 @@ * | Inspire Internet Relay Chat Daemon | * +------------------------------------+ * - * InspIRCd is copyright (C) 2002-2006 ChatSpike-Dev. - * E-mail: - * - * - * - * Written by Craig Edwards, Craig McLure, and others. + * 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 -#include -#include -#include -#include -#include "inspircd_config.h" #include "socket.h" -#include "inspircd.h" #include "configreader.h" #include "inspstring.h" -#include "helperfuncs.h" #include "socketengine.h" -#include "message.h" - +#include "inspircd.h" -extern InspIRCd* ServerInstance; -extern ServerConfig* Config; -extern time_t TIME; +using irc::sockets::OpenTCPSocket; +using irc::sockets::insp_inaddr; +using irc::sockets::insp_sockaddr; -InspSocket* socket_ref[MAX_DESCRIPTORS]; +bool InspSocket::Readable() +{ + return ((this->state != I_CONNECTING) && (this->WaitingForWriteEvent == false)); +} -InspSocket::InspSocket() +InspSocket::InspSocket(InspIRCd* SI) { this->state = I_DISCONNECTED; this->fd = -1; - this->ClosePending = false; + this->WaitingForWriteEvent = false; + this->Instance = SI; + this->IsIOHooked = false; } -InspSocket::InspSocket(int newfd, const char* ip) +InspSocket::InspSocket(InspIRCd* SI, int newfd, const char* ip) { this->fd = newfd; this->state = I_CONNECTED; strlcpy(this->IP,ip,MAXBUF); - this->ClosePending = false; + this->WaitingForWriteEvent = false; + this->Instance = SI; + this->IsIOHooked = false; if (this->fd > -1) - { - ServerInstance->SE->AddFd(this->fd,true,X_ESTAB_MODULE); - socket_ref[this->fd] = this; - } + this->Instance->SE->AddFd(this); } -InspSocket::InspSocket(const std::string &ahost, int aport, bool listening, unsigned long maxtime) : fd(-1) +InspSocket::InspSocket(InspIRCd* SI, const std::string &ipaddr, int aport, bool listening, unsigned long maxtime) { - strlcpy(host,ahost.c_str(),MAXBUF); - this->ClosePending = false; - if (listening) { - if ((this->fd = OpenTCPSocket()) == ERROR) + this->fd = -1; + this->Instance = SI; + strlcpy(host,ipaddr.c_str(),MAXBUF); + this->WaitingForWriteEvent = false; + this->IsIOHooked = false; + if (listening) + { + if ((this->fd = OpenTCPSocket(host)) == ERROR) { this->fd = -1; this->state = I_ERROR; this->OnError(I_ERR_SOCKET); - this->ClosePending = true; - log(DEBUG,"OpenTCPSocket() error"); return; } else { - if (!BindSocket(this->fd,this->client,this->server,aport,(char*)ahost.c_str())) + if (!SI->BindSocket(this->fd,aport,(char*)ipaddr.c_str())) { this->Close(); this->fd = -1; this->state = I_ERROR; this->OnError(I_ERR_BIND); this->ClosePending = true; - log(DEBUG,"BindSocket() error %s",strerror(errno)); return; } else @@ -86,35 +79,35 @@ InspSocket::InspSocket(const std::string &ahost, int aport, bool listening, unsi this->state = I_LISTENING; if (this->fd > -1) { - ServerInstance->SE->AddFd(this->fd,true,X_ESTAB_MODULE); - socket_ref[this->fd] = this; + if (!this->Instance->SE->AddFd(this)) + { + this->Close(); + this->state = I_ERROR; + this->OnError(I_ERR_NOMOREFDS); + } } - log(DEBUG,"New socket now in I_LISTENING state"); return; } - } + } } else { - strlcpy(this->host,ahost.c_str(),MAXBUF); + strlcpy(this->host,ipaddr.c_str(),MAXBUF); this->port = aport; - if (!inet_aton(host,&addy)) + if (insp_aton(host,&addy) < 1) { - log(DEBUG,"Attempting to resolve %s",this->host); - /* Its not an ip, spawn the resolver */ - this->dns.SetNS(std::string(Config->DNSServer)); - this->dns.ForwardLookupWithFD(host,fd); - timeout_end = time(NULL) + maxtime; - timeout = false; - this->state = I_RESOLVING; - socket_ref[this->fd] = this; + this->Instance->Log(DEBUG,"BUG: Hostname passed to InspSocket, rather than an IP address!"); + this->Close(); + this->fd = -1; + this->state = I_ERROR; + this->OnError(I_ERR_RESOLVE); + return; } else { - log(DEBUG,"No need to resolve %s",this->host); strlcpy(this->IP,host,MAXBUF); - timeout_end = time(NULL) + maxtime; + timeout_val = maxtime; this->DoConnect(); } } @@ -122,19 +115,8 @@ InspSocket::InspSocket(const std::string &ahost, int aport, bool listening, unsi void InspSocket::WantWrite() { - /** XXX: - * The socket engine may only have each FD in the list ONCE. - * This means we cant watch for write AND read at the same - * time. We have to remove the READ fd, to insert the WRITE - * fd. Once we receive our WRITE event (which WILL ARRIVE, - * pretty much gauranteed) we switch back to watching for - * READ events again. - * - * This behaviour may be fixed in a later version. - */ + this->Instance->SE->WantWrite(this); this->WaitingForWriteEvent = true; - ServerInstance->SE->DelFd(this->fd); - ServerInstance->SE->AddFd(this->fd,false,X_ESTAB_MODULE); } void InspSocket::SetQueues(int nfd) @@ -146,35 +128,6 @@ void InspSocket::SetQueues(int nfd) setsockopt(nfd,SOL_SOCKET,SO_RCVBUF,(const void *)&recvbuf,sizeof(sendbuf)); } -bool InspSocket::DoResolve() -{ - log(DEBUG,"In DoResolve(), trying to resolve IP"); - if (this->dns.HasResult()) - { - log(DEBUG,"Socket has result"); - std::string res_ip = dns.GetResultIP(); - if (res_ip != "") - { - log(DEBUG,"Socket result set to %s",res_ip.c_str()); - strlcpy(this->IP,res_ip.c_str(),MAXBUF); - socket_ref[this->fd] = NULL; - } - else - { - log(DEBUG,"Socket DNS failure"); - this->Close(); - this->state = I_ERROR; - this->OnError(I_ERR_RESOLVE); - this->fd = -1; - this->ClosePending = true; - return false; - } - return this->DoConnect(); - } - log(DEBUG,"No result for socket yet!"); - return true; -} - /* Most irc servers require you to specify the ip you want to bind to. * If you dont specify an IP, they rather dumbly bind to the first IP * of the box (e.g. INADDR_ANY). In InspIRCd, we scan thought the IP @@ -186,119 +139,124 @@ bool InspSocket::DoResolve() bool InspSocket::BindAddr() { insp_inaddr n; - ConfigReader Conf; - - log(DEBUG,"In InspSocket::BindAddr()"); + ConfigReader Conf(this->Instance); for (int j =0; j < Conf.Enumerate("bind"); j++) { std::string Type = Conf.ReadValue("bind","type",j); std::string IP = Conf.ReadValue("bind","address",j); if (Type == "servers") { - if ((IP != "*") && (IP != "127.0.0.1") && (IP != "")) + if ((IP != "*") && (IP != "127.0.0.1") && (IP != "") && (IP != "::1")) { insp_sockaddr s; - char resolved_addr[MAXBUF]; - - if (!inet_aton(IP.c_str(),&n)) - { - /* If they gave a hostname, bind to the IP it resolves to */ - log(DEBUG,"Resolving host %s",IP.c_str()); - if (CleanAndResolve(resolved_addr, IP.c_str(), true)) - { - log(DEBUG,"Resolved host %s to %s",IP.c_str(),resolved_addr); - IP = resolved_addr; - } - } - if (inet_aton(IP.c_str(),&n)) + if (insp_aton(IP.c_str(),&n) > 0) { - log(DEBUG,"Found an IP to bind to: %s",IP.c_str()); +#ifdef IPV6 + memcpy(&s.sin6_addr, &n, sizeof(n)); + s.sin6_family = AF_FAMILY; +#else s.sin_addr = n; - s.sin_family = AF_INET; + s.sin_family = AF_FAMILY; +#endif if (bind(this->fd,(struct sockaddr*)&s,sizeof(s)) < 0) { - log(DEBUG,"Cant bind()"); this->state = I_ERROR; this->OnError(I_ERR_BIND); this->fd = -1; return false; } - log(DEBUG,"bind() reports outbound fd bound to ip %s",IP.c_str()); return true; } - else - { - log(DEBUG,"Address '%s' was not an IP address",IP.c_str()); - } } } } - log(DEBUG,"Found no suitable IPs to bind, binding INADDR_ANY"); return true; } bool InspSocket::DoConnect() { - log(DEBUG,"In DoConnect()"); - if ((this->fd = socket(AF_INET, SOCK_STREAM, 0)) == -1) + if ((this->fd = socket(AF_FAMILY, SOCK_STREAM, 0)) == -1) { - log(DEBUG,"Cant socket()"); this->state = I_ERROR; this->OnError(I_ERR_SOCKET); - this->fd = -1; return false; } - if (!this->BindAddr()) - return false; + if ((strstr(this->IP,"::ffff:") != (char*)&this->IP) && (strstr(this->IP,"::FFFF:") != (char*)&this->IP)) + { + if (!this->BindAddr()) + return false; + } - log(DEBUG,"Part 2 DoConnect() %s",this->IP); - inet_aton(this->IP,&addy); - addr.sin_family = AF_INET; + insp_aton(this->IP,&addy); +#ifdef IPV6 + addr.sin6_family = AF_FAMILY; + memcpy(&addr.sin6_addr, &addy, sizeof(addy)); + addr.sin6_port = htons(this->port); +#else + addr.sin_family = AF_FAMILY; addr.sin_addr = addy; addr.sin_port = htons(this->port); +#endif - int flags; - flags = fcntl(this->fd, F_GETFL, 0); + int flags = fcntl(this->fd, F_GETFL, 0); fcntl(this->fd, F_SETFL, flags | O_NONBLOCK); if (connect(this->fd, (sockaddr*)&this->addr,sizeof(this->addr)) == -1) { if (errno != EINPROGRESS) { - log(DEBUG,"Error connect() %d: %s",this->fd,strerror(errno)); this->OnError(I_ERR_CONNECT); this->Close(); this->state = I_ERROR; - this->fd = -1; - this->ClosePending = true; return false; } + + this->Timeout = new SocketTimeout(this->GetFd(), this->Instance, this, timeout_val, this->Instance->Time()); + this->Instance->Timers->AddTimer(this->Timeout); } this->state = I_CONNECTING; if (this->fd > -1) { - ServerInstance->SE->AddFd(this->fd,false,X_ESTAB_MODULE); - socket_ref[this->fd] = this; + if (!this->Instance->SE->AddFd(this)) + { + this->OnError(I_ERR_NOMOREFDS); + this->Close(); + this->state = I_ERROR; + return false; + } this->SetQueues(this->fd); } - log(DEBUG,"Returning true from InspSocket::DoConnect"); return true; } void InspSocket::Close() { - if (this->fd != -1) + /* Save this, so we dont lose it, + * otherise on failure, error messages + * might be inaccurate. + */ + int save = errno; + if (this->fd > -1) { + if (this->IsIOHooked && Instance->Config->GetIOHook(this)) + { + try + { + Instance->Config->GetIOHook(this)->OnRawSocketClose(this->fd); + } + catch (CoreException& modexcept) + { + Instance->Log(DEFAULT,"%s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason()); + } + } this->OnClose(); shutdown(this->fd,2); close(this->fd); - socket_ref[this->fd] = NULL; - this->ClosePending = true; - this->fd = -1; } + errno = save; } std::string InspSocket::GetIP() @@ -310,7 +268,36 @@ char* InspSocket::Read() { if ((fd < 0) || (fd > MAX_DESCRIPTORS)) return NULL; - int n = recv(this->fd,this->ibuf,sizeof(this->ibuf),0); + + int n = 0; + + if (this->IsIOHooked) + { + int result2 = 0; + int MOD_RESULT = 0; + try + { + MOD_RESULT = Instance->Config->GetIOHook(this)->OnRawSocketRead(this->fd,this->ibuf,sizeof(this->ibuf),result2); + } + catch (CoreException& modexcept) + { + Instance->Log(DEFAULT,"%s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason()); + } + if (MOD_RESULT < 0) + { + n = -1; + errno = EAGAIN; + } + else + { + n = result2; + } + } + else + { + n = recv(this->fd,this->ibuf,sizeof(this->ibuf),0); + } + if ((n > 0) && (n <= (int)sizeof(this->ibuf))) { ibuf[n] = 0; @@ -318,22 +305,16 @@ char* InspSocket::Read() } else { - if (errno == EAGAIN) - { + int err = errno; + if (err == EAGAIN) return ""; - } else - { - log(DEBUG,"EOF or error on socket: %s",strerror(errno)); return NULL; - } } } void InspSocket::MarkAsClosed() { - log(DEBUG,"Marked as closed"); - this->ClosePending = true; } // There are two possible outcomes to this function. @@ -342,149 +323,200 @@ void InspSocket::MarkAsClosed() // and should be aborted. int InspSocket::Write(const std::string &data) { - if (this->ClosePending) - return false; - - /*int result = write(this->fd,data.c_str(),data.length()); - if (result < 1) - return false; - return true;*/ - /* Try and append the data to the back of the queue, and send it on its way */ outbuffer.push_back(data); + this->Instance->SE->WantWrite(this); return (!this->FlushWriteBuffer()); } bool InspSocket::FlushWriteBuffer() { - if (this->ClosePending) - return true; - + errno = 0; if ((this->fd > -1) && (this->state == I_CONNECTED)) { - if (outbuffer.size()) + if (this->IsIOHooked) { - int result = write(this->fd,outbuffer[0].c_str(),outbuffer[0].length()); - if (result > 0) + while (outbuffer.size() && (errno != EAGAIN)) { - if ((unsigned int)result == outbuffer[0].length()) + try { - /* The whole block was written (usually a line) - * Pop the block off the front of the queue - */ - outbuffer.pop_front(); + int result = Instance->Config->GetIOHook(this)->OnRawSocketWrite(this->fd, outbuffer[0].c_str(), outbuffer[0].length()); + if (result > 0) + { + if ((unsigned int)result == outbuffer[0].length()) + { + outbuffer.pop_front(); + } + else + { + std::string temp = outbuffer[0].substr(result); + outbuffer[0] = temp; + errno = EAGAIN; + } + } + else if (((result == -1) && (errno != EAGAIN)) || (result == 0)) + { + this->OnError(I_ERR_WRITE); + this->state = I_ERROR; + this->Instance->SE->DelFd(this); + this->Close(); + return true; + } } - else + catch (CoreException& modexcept) { - std::string temp = outbuffer[0].substr(result); - outbuffer[0] = temp; + Instance->Log(DEBUG,"%s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason()); + return true; } } - else if ((result == -1) && (errno != EAGAIN)) + } + else + { + /* If we have multiple lines, try to send them all, + * not just the first one -- Brain + */ + while (outbuffer.size() && (errno != EAGAIN)) { - log(DEBUG,"Write error on socket: %s",strerror(errno)); - this->OnError(I_ERR_WRITE); - this->state = I_ERROR; - this->ClosePending = true; - return true; + /* Send a line */ + int result = write(this->fd,outbuffer[0].c_str(),outbuffer[0].length()); + if (result > 0) + { + if ((unsigned int)result == outbuffer[0].length()) + { + /* The whole block was written (usually a line) + * Pop the block off the front of the queue, + * dont set errno, because we are clear of errors + * and want to try and write the next block too. + */ + outbuffer.pop_front(); + } + else + { + std::string temp = outbuffer[0].substr(result); + outbuffer[0] = temp; + /* We didnt get the whole line out. arses. + * Try again next time, i guess. Set errno, + * because we shouldnt be writing any more now, + * until the socketengine says its safe to do so. + */ + errno = EAGAIN; + } + } + else if ((result == -1) && (errno != EAGAIN)) + { + this->OnError(I_ERR_WRITE); + this->state = I_ERROR; + this->Instance->SE->DelFd(this); + this->Close(); + return true; + } } } } - return (fd < 0); -} -bool InspSocket::Timeout(time_t current) -{ - if (!socket_ref[this->fd] || !ServerInstance->SE->HasFd(this->fd)) + if ((errno == EAGAIN) && (fd > -1)) { - log(DEBUG,"No FD or socket ref"); - return false; + this->Instance->SE->WantWrite(this); } - if (this->ClosePending) - { - log(DEBUG,"Close is pending"); - return true; - } + return (fd < 0); +} - if (((this->state == I_RESOLVING) || (this->state == I_CONNECTING)) && (current > timeout_end)) +void SocketTimeout::Tick(time_t now) +{ + if (ServerInstance->SE->GetRef(this->sfd) != this->sock) + return; + + if (this->sock->state == I_CONNECTING) { - log(DEBUG,"Timed out, current=%lu timeout_end=%lu"); // for non-listening sockets, the timeout can occur // which causes termination of the connection after // the given number of seconds without a successful // connection. - this->OnTimeout(); - this->OnError(I_ERR_TIMEOUT); - timeout = true; - this->state = I_ERROR; - this->ClosePending = true; - return true; + this->sock->OnTimeout(); + this->sock->OnError(I_ERR_TIMEOUT); + this->sock->timeout = true; + ServerInstance->SE->DelFd(this->sock); + /* NOTE: We must set this AFTER DelFd, as we added + * this socket whilst writeable. This means that we + * must DELETE the socket whilst writeable too! + */ + this->sock->state = I_ERROR; + this->sock->Close(); + delete this->sock; + return; } - return this->FlushWriteBuffer(); } bool InspSocket::Poll() { - if (!socket_ref[this->fd] || !ServerInstance->SE->HasFd(this->fd)) + if (this->Instance->SE->GetRef(this->fd) != this) return false; int incoming = -1; - bool n = true; - if ((fd < 0) || (fd > MAX_DESCRIPTORS) || (this->ClosePending)) + if ((fd < 0) || (fd > MAX_DESCRIPTORS)) return false; switch (this->state) { - case I_RESOLVING: - log(DEBUG,"State = I_RESOLVING, calling DoResolve()"); - return this->DoResolve(); - break; case I_CONNECTING: - log(DEBUG,"State = I_CONNECTING"); - this->SetState(I_CONNECTED); /* Our socket was in write-state, so delete it and re-add it * in read-state. */ if (this->fd > -1) { - ServerInstance->SE->DelFd(this->fd); - ServerInstance->SE->AddFd(this->fd,true,X_ESTAB_MODULE); + this->Instance->SE->DelFd(this); + this->SetState(I_CONNECTED); + if (!this->Instance->SE->AddFd(this)) + return false; + } + if (Instance->Config->GetIOHook(this)) + { + try + { + Instance->Config->GetIOHook(this)->OnRawSocketConnect(this->fd); + } + catch (CoreException& modexcept) + { + Instance->Log(DEBUG,"%s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason()); + } } return this->OnConnected(); break; case I_LISTENING: length = sizeof (client); incoming = accept (this->fd, (sockaddr*)&client,&length); + +#ifdef IPV6 + this->OnIncomingConnection(incoming, (char*)insp_ntoa(client.sin6_addr)); +#else + this->OnIncomingConnection(incoming, (char*)insp_ntoa(client.sin_addr)); +#endif + + if (this->IsIOHooked) + { + try + { +#ifdef IPV6 + Instance->Config->GetIOHook(this)->OnRawSocketAccept(incoming, insp_ntoa(client.sin6_addr), this->port); +#else + Instance->Config->GetIOHook(this)->OnRawSocketAccept(incoming, insp_ntoa(client.sin_addr), this->port); +#endif + } + catch (CoreException& modexcept) + { + Instance->Log(DEBUG,"%s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason()); + } + } + this->SetQueues(incoming); - this->OnIncomingConnection(incoming,inet_ntoa(client.sin_addr)); return true; break; case I_CONNECTED: - - if (this->WaitingForWriteEvent) - { - /* Switch back to read events */ - ServerInstance->SE->DelFd(this->fd); - ServerInstance->SE->AddFd(this->fd,true,X_ESTAB_MODULE); - /* Trigger the write event */ - n = this->OnWriteReady(); - } - else - { - /* Process the read event */ - n = this->OnDataReady(); - } - /* Flush any pending, but not till after theyre done with the event - * so there are less write calls involved. - * Both FlushWriteBuffer AND the return result of OnDataReady must - * return true for this to be ok. - */ - if (this->FlushWriteBuffer()) - return false; - return n; + /* Process the read event */ + return this->OnDataReady(); break; default: break; @@ -494,7 +526,6 @@ bool InspSocket::Poll() void InspSocket::SetState(InspSocketState s) { - log(DEBUG,"Socket state change"); this->state = s; } @@ -521,3 +552,60 @@ InspSocket::~InspSocket() { this->Close(); } + +void InspSocket::HandleEvent(EventType et, int errornum) +{ + switch (et) + { + case EVENT_ERROR: + this->Instance->SE->DelFd(this); + this->Close(); + delete this; + return; + break; + case EVENT_READ: + if (!this->Poll()) + { + this->Instance->SE->DelFd(this); + this->Close(); + delete this; + return; + } + break; + case EVENT_WRITE: + if (this->WaitingForWriteEvent) + { + this->WaitingForWriteEvent = false; + if (!this->OnWriteReady()) + { + this->Instance->SE->DelFd(this); + this->Close(); + delete this; + return; + } + } + if (this->state == I_CONNECTING) + { + /* This might look wrong as if we should be actually calling + * with EVENT_WRITE, but trust me it is correct. There are some + * writeability-state things in the read code, because of how + * InspSocket used to work regarding write buffering in previous + * versions of InspIRCd. - Brain + */ + this->HandleEvent(EVENT_READ); + return; + } + else + { + if (this->FlushWriteBuffer()) + { + this->Instance->SE->DelFd(this); + this->Close(); + delete this; + return; + } + } + break; + } +} +