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cmain.cpp
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cmain.cpp
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/*****************************************************************************
$Id$
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
#undef fstat
#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 (EMCallback cb)
{
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 <EventableDescriptor*> (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
return -1;
}
/************************
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 <EventableDescriptor*> (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
return -1;
}
/***********************
evma_is_notify_readable
***********************/
extern "C" int evma_is_notify_readable (const unsigned long binding)
{
ConnectionDescriptor *cd = dynamic_cast <ConnectionDescriptor*> (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 <ConnectionDescriptor*> (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 <ConnectionDescriptor*> (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 <ConnectionDescriptor*> (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 <ConnectionDescriptor*> (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 <ConnectionDescriptor*> (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 <ConnectionDescriptor*> (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");
EventableDescriptor *ed = dynamic_cast <EventableDescriptor*> (Bindable_t::GetObject (binding));
if (ed)
return ed->SendOutboundData(data, data_length);
return -1;
}
/******************
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");
DatagramDescriptor *dd = dynamic_cast <DatagramDescriptor*> (Bindable_t::GetObject (binding));
if (dd)
return dd->SendOutboundDatagram(data, data_length, address, port);
return -1;
}
/*********************
evma_close_connection
*********************/
extern "C" void evma_close_connection (const unsigned long binding, int after_writing)
{
ensure_eventmachine("evma_close_connection");
EventableDescriptor *ed = dynamic_cast <EventableDescriptor*> (Bindable_t::GetObject (binding));
if (ed)
ed->ScheduleClose (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");
EventableDescriptor *ed = dynamic_cast <EventableDescriptor*> (Bindable_t::GetObject (binding));
if (ed)
return ed->ReportErrorStatus();
return -1;
}
/********************
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 <EventableDescriptor*> (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 <EventableDescriptor*> (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 <EventableDescriptor*> (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 <ConnectionDescriptor*> (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, socklen_t *len)
{
ensure_eventmachine("evma_get_peername");
EventableDescriptor *ed = dynamic_cast <EventableDescriptor*> (Bindable_t::GetObject (binding));
if (ed) {
return ed->GetPeername (sa, len) ? 1 : 0;
}
else
return 0;
}
/*****************
evma_get_sockname
*****************/
extern "C" int evma_get_sockname (const unsigned long binding, struct sockaddr *sa, socklen_t *len)
{
ensure_eventmachine("evma_get_sockname");
EventableDescriptor *ed = dynamic_cast <EventableDescriptor*> (Bindable_t::GetObject (binding));
if (ed) {
return ed->GetSockname (sa, len) ? 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 <PipeDescriptor*> (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_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 <EventableDescriptor*> (Bindable_t::GetObject (binding));
if (ed) {
return ((float)ed->GetCommInactivityTimeout() / 1000);
}
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 <EventableDescriptor*> (Bindable_t::GetObject (binding));
if (ed) {
return ed->SetCommInactivityTimeout ((uint64_t)(value * 1000));
}
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 <EventableDescriptor*> (Bindable_t::GetObject (binding));
if (ed) {
return ((float)ed->GetPendingConnectTimeout() / 1000);
}
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 <EventableDescriptor*> (Bindable_t::GetObject (binding));
if (ed) {
return ed->SetPendingConnectTimeout ((uint64_t)(value * 1000));
}
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 <EventableDescriptor*> (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, const unsigned long length)
{
ensure_eventmachine("evma_start_proxy");
EventableDescriptor *ed = dynamic_cast <EventableDescriptor*> (Bindable_t::GetObject (from));
if (ed)
ed->StartProxy(to, bufsize, length);
}
/***************
evma_stop_proxy
****************/
extern "C" void evma_stop_proxy (const unsigned long from)
{
ensure_eventmachine("evma_stop_proxy");
EventableDescriptor *ed = dynamic_cast <EventableDescriptor*> (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);
}
/**************************
evma_get_current_loop_time
***************************/
extern "C" uint64_t evma_get_current_loop_time()
{
ensure_eventmachine("evma_get_current_loop_time");
return EventMachine->GetCurrentLoopTime();
}