X-Git-Url: https://git.netwichtig.de/gitweb/?a=blobdiff_plain;f=src%2Fsocket.cpp;h=282d3c5a72fb4355bdfe74e347a28e6d0fb45080;hb=59b1a8955142935b02af6446005ab47fc7c3fc8c;hp=2b6f84cd35d3637856008c35d4d08ad56a29e0b9;hpb=3f8978ceef854ab7c91e86751b61a4405c10c4c8;p=user%2Fhenk%2Fcode%2Finspircd.git diff --git a/src/socket.cpp b/src/socket.cpp index 2b6f84cd3..282d3c5a7 100644 --- a/src/socket.cpp +++ b/src/socket.cpp @@ -2,7 +2,7 @@ * | Inspire Internet Relay Chat Daemon | * +------------------------------------+ * - * Inspire is copyright (C) 2002-2004 ChatSpike-Dev. + * InspIRCd is copyright (C) 2002-2006 ChatSpike-Dev. * E-mail: * * @@ -25,109 +25,349 @@ using namespace std; #include #include #include +#include #include #include #include +#include #include "socket.h" #include "inspircd.h" #include "inspircd_io.h" -#include "inspircd_util.h" #include "inspstring.h" #include "helperfuncs.h" +#include "socketengine.h" -extern FILE *log_file; -extern int boundPortCount; -extern int openSockfd[MAXSOCKS]; + +extern InspIRCd* ServerInstance; +extern ServerConfig* Config; extern time_t TIME; -extern bool unlimitcore; -extern int MaxConn; + +InspSocket* socket_ref[MAX_DESCRIPTORS]; InspSocket::InspSocket() { this->state = I_DISCONNECTED; + this->fd = -1; +} + +InspSocket::InspSocket(int newfd, char* ip) +{ + this->fd = newfd; + this->state = I_CONNECTED; + this->IP = ip; + ServerInstance->SE->AddFd(this->fd,true,X_ESTAB_MODULE); + socket_ref[this->fd] = this; } InspSocket::InspSocket(std::string host, int port, bool listening, unsigned long maxtime) { + this->fd = -1; if (listening) { - } else { - char* ip; + if ((this->fd = OpenTCPSocket()) == ERROR) + { + this->fd = -1; + this->state = I_ERROR; + this->OnError(I_ERR_SOCKET); + log(DEBUG,"OpenTCPSocket() error"); + return; + } + else + { + if (BindSocket(this->fd,this->client,this->server,port,(char*)host.c_str()) == ERROR) + { + this->Close(); + this->fd = -1; + this->state = I_ERROR; + this->OnError(I_ERR_BIND); + log(DEBUG,"BindSocket() error %s",strerror(errno)); + return; + } + else + { + this->state = I_LISTENING; + ServerInstance->SE->AddFd(this->fd,true,X_ESTAB_MODULE); + socket_ref[this->fd] = this; + log(DEBUG,"New socket now in I_LISTENING state"); + return; + } + } + } + else + { this->host = host; - hostent* hoste = gethostbyname(host.c_str()); - if (!hoste) { - ip = (char*)host.c_str(); - } else { - struct in_addr* ia = (in_addr*)hoste->h_addr; - ip = inet_ntoa(*ia); + this->port = port; + + if (!inet_aton(host.c_str(),&addy)) + { + log(DEBUG,"Attempting to resolve %s",this->host.c_str()); + /* 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; + } + else + { + log(DEBUG,"No need to resolve %s",this->host.c_str()); + this->IP = host; + timeout_end = time(NULL) + maxtime; + this->DoConnect(); } + } +} + +void InspSocket::SetQueues(int nfd) +{ + // attempt to increase socket sendq and recvq as high as its possible + int sendbuf = 32768; + int recvbuf = 32768; + setsockopt(nfd,SOL_SOCKET,SO_SNDBUF,(const void *)&sendbuf,sizeof(sendbuf)); + setsockopt(nfd,SOL_SOCKET,SO_RCVBUF,(const void *)&recvbuf,sizeof(sendbuf)); +} - timeout_end = time(NULL)+maxtime; - timeout = false; - if ((this->fd = socket(AF_INET, SOCK_STREAM, 0)) == -1) +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()); + this->IP = res_ip; + socket_ref[this->fd] = NULL; + } + else { + log(DEBUG,"Socket DNS failure"); + this->Close(); this->state = I_ERROR; - return; + this->OnError(I_ERR_RESOLVE); + return false; } - this->port = port; - inet_aton(ip,&addy); - addr.sin_family = AF_INET; - addr.sin_addr = addy; - addr.sin_port = htons(this->port); - - int flags; - 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) - { - shutdown(this->fd,2); - close(this->fd); - this->fd = -1; - this->state = I_ERROR; - return; - } - } - this->state = I_CONNECTING; - return; + return this->DoConnect(); + } + log(DEBUG,"No result for socket yet!"); + return true; +} + +bool InspSocket::DoConnect() +{ + log(DEBUG,"In DoConnect()"); + if ((this->fd = socket(AF_INET, SOCK_STREAM, 0)) == -1) + { + log(DEBUG,"Cant socket()"); + this->state = I_ERROR; + this->OnError(I_ERR_SOCKET); + return false; + } + + log(DEBUG,"Part 2 DoConnect() %s",this->IP.c_str()); + inet_aton(this->IP.c_str(),&addy); + addr.sin_family = AF_INET; + addr.sin_addr = addy; + addr.sin_port = htons(this->port); + + int flags; + 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->state = I_ERROR; + this->Close(); + return false; + } + } + this->state = I_CONNECTING; + ServerInstance->SE->AddFd(this->fd,false,X_ESTAB_MODULE); + socket_ref[this->fd] = this; + this->SetQueues(this->fd); + log(DEBUG,"Returning true from InspSocket::DoConnect"); + return true; +} + + +void InspSocket::Close() +{ + if (this->fd != -1) + { + this->OnClose(); + shutdown(this->fd,2); + close(this->fd); + socket_ref[this->fd] = NULL; + this->fd = -1; } } -void InspSocket::EngineTrigger() +std::string InspSocket::GetIP() +{ + return this->IP; +} + +char* InspSocket::Read() { + if ((fd < 0) || (fd > MAX_DESCRIPTORS)) + return NULL; + int n = recv(this->fd,this->ibuf,sizeof(this->ibuf),0); + if ((n > 0) && (n <= (int)sizeof(this->ibuf))) + { + ibuf[n] = 0; + return ibuf; + } + else + { + if (errno == EAGAIN) + { + return ""; + } + else + { + log(DEBUG,"EOF or error on socket"); + return NULL; + } + } +} + +// There are two possible outcomes to this function. +// It will either write all of the data, or an undefined amount. +// If an undefined amount is written the connection has failed +// and should be aborted. +int InspSocket::Write(std::string data) +{ + try + { + if ((data != "") && (this->Buffer.length() + data.length() < this->Buffer.max_size())) + this->Buffer.append(data); + } + catch (std::length_error) + { + log(DEBUG,"std::length_error exception caught while appending to socket buffer!"); + return 0; + } + return data.length(); +} + +void InspSocket::FlushWriteBuffer() +{ + int result = 0; + if (this->Buffer.length()) + { + result = send(this->fd,this->Buffer.c_str(),this->Buffer.length(),0); + if (result > 0) + { + if (result == (int)this->Buffer.length()) + { + this->Buffer = ""; + } + else + { + /* If we wrote some, advance the buffer forwards */ + char* n = (char*)this->Buffer.c_str(); + n += result; + this->Buffer = n; + } + } + } +} + +bool InspSocket::Timeout(time_t current) +{ + if (((this->state == I_RESOLVING) || (this->state == I_CONNECTING)) && (current > timeout_end)) + { + 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; + return true; + } + this->FlushWriteBuffer(); + return false; +} + +bool InspSocket::Poll() +{ + int incoming = -1; + bool n = true; + + log(DEBUG,"InspSocket::Poll()"); + switch (this->state) { + case I_RESOLVING: + log(DEBUG,"State = I_RESOLVING, calling DoResolve()"); + return this->DoResolve(); + break; case I_CONNECTING: - this->OnConnected(); + log(DEBUG,"State = I_CONNECTED"); + this->SetState(I_CONNECTED); + /* Our socket was in write-state, so delete it and re-add it + * in read-state. + */ + ServerInstance->SE->DelFd(this->fd); + ServerInstance->SE->AddFd(this->fd,true,X_ESTAB_MODULE); + return this->OnConnected(); break; case I_LISTENING: - this->OnIncomingConnection(); + length = sizeof (client); + incoming = accept (this->fd, (sockaddr*)&client,&length); + this->SetQueues(incoming); + this->OnIncomingConnection(incoming,inet_ntoa(client.sin_addr)); + return true; break; case I_CONNECTED: - this->OnDataReady(); + log(DEBUG,"State = I_CONNECTED"); + n = this->OnDataReady(); + log(DEBUG,"State return: %d",(int)n); + /* Flush any pending, but not till after theyre done with the event + * so there are less write calls involved. */ + this->FlushWriteBuffer(); + return n; break; default: break; } + return true; } void InspSocket::SetState(InspSocketState s) { + log(DEBUG,"Socket state change"); this->state = s; } -int InspSocket::OnConnected() { return 0; } -int InspSocket::OnError() { return 0; } +InspSocketState InspSocket::GetState() +{ + return this->state; +} + +int InspSocket::GetFd() +{ + return this->fd; +} + +bool InspSocket::OnConnected() { return true; } +void InspSocket::OnError(InspSocketError e) { return; } int InspSocket::OnDisconnect() { return 0; } -int InspSocket::OnIncomingConnection() { return 0; } -int InspSocket::OnDataReady() { return 0; } +int InspSocket::OnIncomingConnection(int newfd, char* ip) { return 0; } +bool InspSocket::OnDataReady() { return true; } +void InspSocket::OnTimeout() { return; } +void InspSocket::OnClose() { return; } InspSocket::~InspSocket() { + this->Close(); } -/* -int BindSocket (int sockfd, struct sockaddr_in client, struct sockaddr_in server, int port, char* addr) -int OpenTCPSocket (void) -*/