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/* eventloopinteractor.cpp
Copyright (C) 2003,2004 Klarälvdalens Datakonsult AB
This file is part of GPGME++.
GPGME++ is free software; you can redistribute it and/or modify it
under the terms of 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.
GPGME++ is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with GPGME; if not, write to the Free Software Foundation,
Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <gpgmepp/eventloopinteractor.h>
#include <gpgmepp/context.h>
#include "context_p.h"
#include <gpgmepp/key.h>
#include <gpgmepp/trustitem.h>
#include <gpgme.h>
#include <vector>
using std::vector;
#ifndef NDEBUG
# include <iostream>
#endif
#include <cassert>
namespace GpgME {
//
// EventLoopInteractor::Private Declaration
//
struct EventLoopInteractor::Private {
struct OneFD {
OneFD( int aFd, int aDir, gpgme_io_cb_t aFnc,
void * aFncData, void * aExternalTag )
: fd( aFd ), dir( aDir ), fnc( aFnc ),
fncData( aFncData ), externalTag( aExternalTag ) {}
int fd;
int dir;
gpgme_io_cb_t fnc;
void * fncData;
void * externalTag;
};
vector<OneFD*> mCallbacks;
static void removeIOCb( void * tag );
static gpgme_error_t registerIOCb( void * data, int fd, int dir,
gpgme_io_cb_t fnc, void * fnc_data,
void ** r_tag );
static void eventIOCb( void *, gpgme_event_io_t type, void * type_data );
static gpgme_io_cbs iocbs;
};
gpgme_io_cbs EventLoopInteractor::Private::iocbs = {
&EventLoopInteractor::Private::registerIOCb,
0,
&EventLoopInteractor::Private::removeIOCb,
&EventLoopInteractor::Private::eventIOCb,
0
};
//
// EventLoopInteractor::Private IO Callback Implementations
//
gpgme_error_t EventLoopInteractor::Private::registerIOCb( void *, int fd, int dir,
gpgme_io_cb_t fnc, void * fnc_data,
void ** r_tag )
{
assert( instance() ); assert( instance()->d );
bool ok = false;
void * etag = instance()->registerWatcher( fd, dir ? Read : Write, ok );
if ( !ok ) return GPG_ERR_GENERAL;
instance()->d->mCallbacks.push_back( new OneFD( fd, dir, fnc, fnc_data, etag ) );
if ( r_tag )
*r_tag = instance()->d->mCallbacks.back();
return GPG_ERR_NO_ERROR;
}
void EventLoopInteractor::Private::removeIOCb( void * tag ) {
assert( instance() ); assert( instance()->d );
for ( vector<OneFD*>::iterator it = instance()->d->mCallbacks.begin() ;
it != instance()->d->mCallbacks.end() ; ++it ) {
if ( *it == tag ) {
instance()->unregisterWatcher( (*it)->externalTag );
delete *it; *it = 0;
instance()->d->mCallbacks.erase( it );
return;
}
}
}
void EventLoopInteractor::Private::eventIOCb( void * data, gpgme_event_io_t type, void * type_data ) {
assert( instance() );
Context * ctx = static_cast<Context*>( data );
switch( type ) {
case GPGME_EVENT_START:
{
// hmmm, what to do here?
}
break;
case GPGME_EVENT_DONE:
{
gpgme_error_t e = *static_cast<gpgme_error_t*>( type_data );
if ( ctx && ctx->impl() )
ctx->impl()->lasterr = e;
instance()->operationDoneEvent( ctx, e );
}
break;
case GPGME_EVENT_NEXT_KEY:
{
gpgme_key_t key = static_cast<gpgme_key_t>( type_data );
instance()->nextKeyEvent( ctx, Key( key, false, ctx ? ctx->keyListMode() : 0 ) );
}
break;
case GPGME_EVENT_NEXT_TRUSTITEM:
{
gpgme_trust_item_t item = static_cast<gpgme_trust_item_t>( type_data );
instance()->nextTrustItemEvent( ctx, TrustItem( item ) );
gpgme_trust_item_unref( item );
}
break;
default: // warn
;
}
}
//
// EventLoopInteractor Implementation
//
EventLoopInteractor * EventLoopInteractor::mSelf = 0;
EventLoopInteractor::EventLoopInteractor() {
assert( !mSelf );
d = new Private();
mSelf = this;
}
EventLoopInteractor::~EventLoopInteractor() {
// warn if there are still callbacks registered
mSelf = 0;
delete d; d = 0;
}
void EventLoopInteractor::manage( Context * context ) {
if ( !context || context->managedByEventLoopInteractor() ) return;
gpgme_io_cbs * iocbs = new gpgme_io_cbs( Private::iocbs );
iocbs->event_priv = context;
context->installIOCallbacks( iocbs );
}
void EventLoopInteractor::unmanage( Context * context ) {
if ( context )
context->uninstallIOCallbacks();
}
void EventLoopInteractor::actOn( int fd, Direction dir ) {
for ( vector<Private::OneFD*>::const_iterator it = d->mCallbacks.begin() ;
it != d->mCallbacks.end() ; ++it )
if ( (*it)->fd == fd && ( (*it)->dir ? Read : Write ) == dir ) {
(*((*it)->fnc))( (*it)->fncData, fd );
break;
}
}
} // namespace GpgME
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