/***************************************************************************** $Id$ File: cmain.cpp Date: 06Apr06 Copyright (C) 2006-07 by Francis Cianfrocca. All Rights Reserved. Gmail: blackhedd This program is free software; you can redistribute it and/or modify it under the terms of either: 1) the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version; or 2) Ruby's License. See the file COPYING for complete licensing information. *****************************************************************************/ #include "project.h" /* 21Sep09: ruby 1.9 defines macros for common i/o functions that point to rb_w32_* implementations. We need to undef the stat to fix a build failure in evma_send_file_data_to_connection. See http://groups.google.com/group/eventmachine/browse_thread/thread/fc60d9bb738ffc71 */ #if defined(BUILD_FOR_RUBY) && defined(OS_WIN32) #undef stat #endif static EventMachine_t *EventMachine; static int bUseEpoll = 0; static int bUseKqueue = 0; extern "C" void ensure_eventmachine (const char *caller = "unknown caller") { if (!EventMachine) { const int err_size = 128; char err_string[err_size]; snprintf (err_string, err_size, "eventmachine not initialized: %s", caller); #ifdef BUILD_FOR_RUBY rb_raise(rb_eRuntimeError, "%s", err_string); #else throw std::runtime_error (err_string); #endif } } /*********************** evma_initialize_library ***********************/ extern "C" void evma_initialize_library (void(*cb)(const unsigned long, int, const char*, const unsigned long)) { // Probably a bad idea to mess with the signal mask of a process // we're just being linked into. //InstallSignalHandlers(); if (EventMachine) #ifdef BUILD_FOR_RUBY rb_raise(rb_eRuntimeError, "eventmachine already initialized: evma_initialize_library"); #else throw std::runtime_error ("eventmachine already initialized: evma_initialize_library"); #endif EventMachine = new EventMachine_t (cb); if (bUseEpoll) EventMachine->_UseEpoll(); if (bUseKqueue) EventMachine->_UseKqueue(); } /******************** evma_release_library ********************/ extern "C" void evma_release_library() { ensure_eventmachine("evma_release_library"); delete EventMachine; EventMachine = NULL; } /**************** evma_run_machine ****************/ extern "C" void evma_run_machine() { ensure_eventmachine("evma_run_machine"); EventMachine->Run(); } /************************** evma_install_oneshot_timer **************************/ extern "C" const unsigned long evma_install_oneshot_timer (int seconds) { ensure_eventmachine("evma_install_oneshot_timer"); return EventMachine->InstallOneshotTimer (seconds); } /********************** evma_connect_to_server **********************/ extern "C" const unsigned long evma_connect_to_server (const char *bind_addr, int bind_port, const char *server, int port) { ensure_eventmachine("evma_connect_to_server"); return EventMachine->ConnectToServer (bind_addr, bind_port, server, port); } /*************************** evma_connect_to_unix_server ***************************/ extern "C" const unsigned long evma_connect_to_unix_server (const char *server) { ensure_eventmachine("evma_connect_to_unix_server"); return EventMachine->ConnectToUnixServer (server); } /************** evma_attach_fd **************/ extern "C" const unsigned long evma_attach_fd (int file_descriptor, int watch_mode) { ensure_eventmachine("evma_attach_fd"); return EventMachine->AttachFD (file_descriptor, watch_mode ? true : false); } /************** evma_detach_fd **************/ extern "C" int evma_detach_fd (const unsigned long binding) { ensure_eventmachine("evma_detach_fd"); EventableDescriptor *ed = dynamic_cast (Bindable_t::GetObject (binding)); if (ed) return EventMachine->DetachFD (ed); else #ifdef BUILD_FOR_RUBY rb_raise(rb_eRuntimeError, "invalid binding to detach"); #else throw std::runtime_error ("invalid binding to detach"); #endif } /************************ evma_get_file_descriptor ************************/ extern "C" int evma_get_file_descriptor (const unsigned long binding) { ensure_eventmachine("evma_get_file_descriptor"); EventableDescriptor *ed = dynamic_cast (Bindable_t::GetObject (binding)); if (ed) return ed->GetSocket(); else #ifdef BUILD_FOR_RUBY rb_raise(rb_eRuntimeError, "invalid binding to get_fd"); #else throw std::runtime_error ("invalid binding to get_fd"); #endif } /*********************** evma_is_notify_readable ***********************/ extern "C" int evma_is_notify_readable (const unsigned long binding) { ConnectionDescriptor *cd = dynamic_cast (Bindable_t::GetObject (binding)); if (cd) return cd->IsNotifyReadable() ? 1 : 0; return -1; } /************************ evma_set_notify_readable ************************/ extern "C" void evma_set_notify_readable (const unsigned long binding, int mode) { ConnectionDescriptor *cd = dynamic_cast (Bindable_t::GetObject (binding)); if (cd) cd->SetNotifyReadable (mode ? true : false); } /*********************** evma_is_notify_writable ***********************/ extern "C" int evma_is_notify_writable (const unsigned long binding) { ConnectionDescriptor *cd = dynamic_cast (Bindable_t::GetObject (binding)); if (cd) return cd->IsNotifyWritable() ? 1 : 0; return -1; } /************************ evma_set_notify_writable ************************/ extern "C" void evma_set_notify_writable (const unsigned long binding, int mode) { ConnectionDescriptor *cd = dynamic_cast (Bindable_t::GetObject (binding)); if (cd) cd->SetNotifyWritable (mode ? true : false); } /********** evma_pause **********/ extern "C" int evma_pause (const unsigned long binding) { ConnectionDescriptor *cd = dynamic_cast (Bindable_t::GetObject (binding)); if (cd) return cd->Pause() ? 1 : 0; return 0; } /*********** evma_resume ***********/ extern "C" int evma_resume (const unsigned long binding) { ConnectionDescriptor *cd = dynamic_cast (Bindable_t::GetObject (binding)); if (cd) return cd->Resume() ? 1 : 0; return 0; } /************** evma_is_paused **************/ extern "C" int evma_is_paused (const unsigned long binding) { ConnectionDescriptor *cd = dynamic_cast (Bindable_t::GetObject (binding)); if (cd) return cd->IsPaused() ? 1 : 0; return 0; } /********************** evma_create_tcp_server **********************/ extern "C" const unsigned long evma_create_tcp_server (const char *address, int port) { ensure_eventmachine("evma_create_tcp_server"); return EventMachine->CreateTcpServer (address, port); } /****************************** evma_create_unix_domain_server ******************************/ extern "C" const unsigned long evma_create_unix_domain_server (const char *filename) { ensure_eventmachine("evma_create_unix_domain_server"); return EventMachine->CreateUnixDomainServer (filename); } /************************* evma_open_datagram_socket *************************/ extern "C" const unsigned long evma_open_datagram_socket (const char *address, int port) { ensure_eventmachine("evma_open_datagram_socket"); return EventMachine->OpenDatagramSocket (address, port); } /****************** evma_open_keyboard ******************/ extern "C" const unsigned long evma_open_keyboard() { ensure_eventmachine("evma_open_keyboard"); return EventMachine->OpenKeyboard(); } /******************* evma_watch_filename *******************/ extern "C" const unsigned long evma_watch_filename (const char *fname) { ensure_eventmachine("evma_watch_filename"); return EventMachine->WatchFile(fname); } /********************* evma_unwatch_filename *********************/ extern "C" void evma_unwatch_filename (const unsigned long sig) { ensure_eventmachine("evma_unwatch_file"); EventMachine->UnwatchFile(sig); } /************** evma_watch_pid **************/ extern "C" const unsigned long evma_watch_pid (int pid) { ensure_eventmachine("evma_watch_pid"); return EventMachine->WatchPid(pid); } /**************** evma_unwatch_pid ****************/ extern "C" void evma_unwatch_pid (const unsigned long sig) { ensure_eventmachine("evma_unwatch_pid"); EventMachine->UnwatchPid(sig); } /**************************** evma_send_data_to_connection ****************************/ extern "C" int evma_send_data_to_connection (const unsigned long binding, const char *data, int data_length) { ensure_eventmachine("evma_send_data_to_connection"); return ConnectionDescriptor::SendDataToConnection (binding, data, data_length); } /****************** evma_send_datagram ******************/ extern "C" int evma_send_datagram (const unsigned long binding, const char *data, int data_length, const char *address, int port) { ensure_eventmachine("evma_send_datagram"); return DatagramDescriptor::SendDatagram (binding, data, data_length, address, port); } /********************* evma_close_connection *********************/ extern "C" void evma_close_connection (const unsigned long binding, int after_writing) { ensure_eventmachine("evma_close_connection"); ConnectionDescriptor::CloseConnection (binding, (after_writing ? true : false)); } /*********************************** evma_report_connection_error_status ***********************************/ extern "C" int evma_report_connection_error_status (const unsigned long binding) { ensure_eventmachine("evma_report_connection_error_status"); return ConnectionDescriptor::ReportErrorStatus (binding); } /******************** evma_stop_tcp_server ********************/ extern "C" void evma_stop_tcp_server (const unsigned long binding) { ensure_eventmachine("evma_stop_tcp_server"); AcceptorDescriptor::StopAcceptor (binding); } /***************** evma_stop_machine *****************/ extern "C" void evma_stop_machine() { ensure_eventmachine("evma_stop_machine"); EventMachine->ScheduleHalt(); } /************** evma_start_tls **************/ extern "C" void evma_start_tls (const unsigned long binding) { ensure_eventmachine("evma_start_tls"); EventableDescriptor *ed = dynamic_cast (Bindable_t::GetObject (binding)); if (ed) ed->StartTls(); } /****************** evma_set_tls_parms ******************/ extern "C" void evma_set_tls_parms (const unsigned long binding, const char *privatekey_filename, const char *certchain_filename, int verify_peer) { ensure_eventmachine("evma_set_tls_parms"); EventableDescriptor *ed = dynamic_cast (Bindable_t::GetObject (binding)); if (ed) ed->SetTlsParms (privatekey_filename, certchain_filename, (verify_peer == 1 ? true : false)); } /****************** evma_get_peer_cert ******************/ #ifdef WITH_SSL extern "C" X509 *evma_get_peer_cert (const unsigned long binding) { ensure_eventmachine("evma_get_peer_cert"); EventableDescriptor *ed = dynamic_cast (Bindable_t::GetObject (binding)); if (ed) return ed->GetPeerCert(); return NULL; } #endif /******************** evma_accept_ssl_peer ********************/ #ifdef WITH_SSL extern "C" void evma_accept_ssl_peer (const unsigned long binding) { ensure_eventmachine("evma_accept_ssl_peer"); ConnectionDescriptor *cd = dynamic_cast (Bindable_t::GetObject (binding)); if (cd) cd->AcceptSslPeer(); } #endif /***************** evma_get_peername *****************/ extern "C" int evma_get_peername (const unsigned long binding, struct sockaddr *sa) { ensure_eventmachine("evma_get_peername"); EventableDescriptor *ed = dynamic_cast (Bindable_t::GetObject (binding)); if (ed) { return ed->GetPeername (sa) ? 1 : 0; } else return 0; } /***************** evma_get_sockname *****************/ extern "C" int evma_get_sockname (const unsigned long binding, struct sockaddr *sa) { ensure_eventmachine("evma_get_sockname"); EventableDescriptor *ed = dynamic_cast (Bindable_t::GetObject (binding)); if (ed) { return ed->GetSockname (sa) ? 1 : 0; } else return 0; } /*********************** evma_get_subprocess_pid ***********************/ extern "C" int evma_get_subprocess_pid (const unsigned long binding, pid_t *pid) { ensure_eventmachine("evma_get_subprocess_pid"); #ifdef OS_UNIX PipeDescriptor *pd = dynamic_cast (Bindable_t::GetObject (binding)); if (pd) { return pd->GetSubprocessPid (pid) ? 1 : 0; } else if (pid && EventMachine->SubprocessPid) { *pid = EventMachine->SubprocessPid; return 1; } else return 0; #else return 0; #endif } /************************** evma_get_subprocess_status **************************/ extern "C" int evma_get_subprocess_status (const unsigned long binding, int *status) { ensure_eventmachine("evma_get_subprocess_status"); if (status) { *status = EventMachine->SubprocessExitStatus; return 1; } else return 0; } /************************* evma_get_connection_count *************************/ extern "C" int evma_get_connection_count() { ensure_eventmachine("evma_get_connection_count"); return EventMachine->GetConnectionCount(); } /********************* evma_signal_loopbreak *********************/ extern "C" void evma_signal_loopbreak() { ensure_eventmachine("evma_signal_loopbreak"); EventMachine->SignalLoopBreaker(); } /**************** evma__write_file ****************/ extern "C" const unsigned long evma__write_file (const char *filename) { ensure_eventmachine("evma__write_file"); return EventMachine->_OpenFileForWriting (filename); } /******************************** evma_get_comm_inactivity_timeout ********************************/ extern "C" float evma_get_comm_inactivity_timeout (const unsigned long binding) { ensure_eventmachine("evma_get_comm_inactivity_timeout"); EventableDescriptor *ed = dynamic_cast (Bindable_t::GetObject (binding)); if (ed) { return ed->GetCommInactivityTimeout(); } else return 0.0; //Perhaps this should be an exception. Access to an unknown binding. } /******************************** evma_set_comm_inactivity_timeout ********************************/ extern "C" int evma_set_comm_inactivity_timeout (const unsigned long binding, float value) { ensure_eventmachine("evma_set_comm_inactivity_timeout"); EventableDescriptor *ed = dynamic_cast (Bindable_t::GetObject (binding)); if (ed) { return ed->SetCommInactivityTimeout (value); } else return 0; //Perhaps this should be an exception. Access to an unknown binding. } /******************************** evma_get_pending_connect_timeout ********************************/ extern "C" float evma_get_pending_connect_timeout (const unsigned long binding) { ensure_eventmachine("evma_get_pending_connect_timeout"); EventableDescriptor *ed = dynamic_cast (Bindable_t::GetObject (binding)); if (ed) { return ed->GetPendingConnectTimeout(); } else return 0.0; } /******************************** evma_set_pending_connect_timeout ********************************/ extern "C" int evma_set_pending_connect_timeout (const unsigned long binding, float value) { ensure_eventmachine("evma_set_pending_connect_timeout"); EventableDescriptor *ed = dynamic_cast (Bindable_t::GetObject (binding)); if (ed) { return ed->SetPendingConnectTimeout (value); } else return 0; } /********************** evma_set_timer_quantum **********************/ extern "C" void evma_set_timer_quantum (int interval) { ensure_eventmachine("evma_set_timer_quantum"); EventMachine->SetTimerQuantum (interval); } /************************ evma_get_max_timer_count ************************/ extern "C" int evma_get_max_timer_count() { return EventMachine_t::GetMaxTimerCount(); } /************************ evma_set_max_timer_count ************************/ extern "C" void evma_set_max_timer_count (int ct) { // This may only be called if the reactor is not running. if (EventMachine) #ifdef BUILD_FOR_RUBY rb_raise(rb_eRuntimeError, "eventmachine already initialized: evma_set_max_timer_count"); #else throw std::runtime_error ("eventmachine already initialized: evma_set_max_timer_count"); #endif EventMachine_t::SetMaxTimerCount (ct); } /****************** evma_setuid_string ******************/ extern "C" void evma_setuid_string (const char *username) { // We do NOT need to be running an EM instance because this method is static. EventMachine_t::SetuidString (username); } /********** evma_popen **********/ extern "C" const unsigned long evma_popen (char * const*cmd_strings) { ensure_eventmachine("evma_popen"); return EventMachine->Socketpair (cmd_strings); } /*************************** evma_get_outbound_data_size ***************************/ extern "C" int evma_get_outbound_data_size (const unsigned long binding) { ensure_eventmachine("evma_get_outbound_data_size"); EventableDescriptor *ed = dynamic_cast (Bindable_t::GetObject (binding)); return ed ? ed->GetOutboundDataSize() : 0; } /************** evma_set_epoll **************/ extern "C" void evma_set_epoll (int use) { bUseEpoll = !!use; } /*************** evma_set_kqueue ***************/ extern "C" void evma_set_kqueue (int use) { bUseKqueue = !!use; } /********************** evma_set_rlimit_nofile **********************/ extern "C" int evma_set_rlimit_nofile (int nofiles) { return EventMachine_t::SetRlimitNofile (nofiles); } /********************************* evma_send_file_data_to_connection *********************************/ extern "C" int evma_send_file_data_to_connection (const unsigned long binding, const char *filename) { /* This is a sugaring over send_data_to_connection that reads a file into a * locally-allocated buffer, and sends the file data to the remote peer. * Return the number of bytes written to the caller. * TODO, needs to impose a limit on the file size. This is intended only for * small files. (I don't know, maybe 8K or less.) For larger files, use interleaved * I/O to avoid slowing the rest of the system down. * TODO: we should return a code rather than barf, in case of file-not-found. * TODO, does this compile on Windows? * TODO, given that we want this to work only with small files, how about allocating * the buffer on the stack rather than the heap? * * Modified 25Jul07. This now returns -1 on file-too-large; 0 for success, and a positive * errno in case of other errors. * * Contributed by Kirk Haines. */ char data[32*1024]; int r; ensure_eventmachine("evma_send_file_data_to_connection"); int Fd = open (filename, O_RDONLY); if (Fd < 0) return errno; // From here on, all early returns MUST close Fd. struct stat st; if (fstat (Fd, &st)) { int e = errno; close (Fd); return e; } off_t filesize = st.st_size; if (filesize <= 0) { close (Fd); return 0; } else if (filesize > (off_t) sizeof(data)) { close (Fd); return -1; } r = read (Fd, data, filesize); if (r != filesize) { int e = errno; close (Fd); return e; } evma_send_data_to_connection (binding, data, r); close (Fd); return 0; } /**************** evma_start_proxy *****************/ extern "C" void evma_start_proxy (const unsigned long from, const unsigned long to, const unsigned long bufsize) { ensure_eventmachine("evma_start_proxy"); EventableDescriptor *ed = dynamic_cast (Bindable_t::GetObject (from)); if (ed) ed->StartProxy(to, bufsize); } /*************** evma_stop_proxy ****************/ extern "C" void evma_stop_proxy (const unsigned long from) { ensure_eventmachine("evma_stop_proxy"); EventableDescriptor *ed = dynamic_cast (Bindable_t::GetObject (from)); if (ed) ed->StopProxy(); } /*************************** evma_get_heartbeat_interval ****************************/ extern "C" float evma_get_heartbeat_interval() { ensure_eventmachine("evma_get_heartbeat_interval"); return EventMachine->GetHeartbeatInterval(); } /*************************** evma_set_heartbeat_interval ****************************/ extern "C" int evma_set_heartbeat_interval(float interval) { ensure_eventmachine("evma_set_heartbeat_interval"); return EventMachine->SetHeartbeatInterval(interval); }