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Diffstat (limited to 'mcop/dispatcher.cpp')
| -rw-r--r-- | mcop/dispatcher.cpp | 1090 |
1 files changed, 1090 insertions, 0 deletions
diff --git a/mcop/dispatcher.cpp b/mcop/dispatcher.cpp new file mode 100644 index 0000000..580a268 --- /dev/null +++ b/mcop/dispatcher.cpp @@ -0,0 +1,1090 @@ + /* + + Copyright (C) 2000-2001 Stefan Westerfeld + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public + License as published by the Free Software Foundation; either + version 2 of the License, or (at your option) any later version. + + This library 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public License + along with this library; see the file COPYING.LIB. If not, write to + the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, + Boston, MA 02110-1301, USA. + + */ + +#include <config.h> +#include "dispatcher.h" +#include "delayedreturn.h" +#include "startupmanager.h" +#include "unixconnection.h" +#include "tcpconnection.h" +#include "referenceclean.h" +#include "core.h" +#include "md5auth.h" +#include "mcoputils.h" +#include "loopback.h" +#include "debug.h" +#include "ifacerepo_impl.h" +#include "thread.h" + +#include <sys/stat.h> +#include <stdio.h> +#include <signal.h> +#include <cstring> +#include <cstdlib> +#include <errno.h> +#include <iostream> + +#if TIME_WITH_SYS_TIME +# include <sys/time.h> +# include <time.h> +#elif HAVE_SYS_TIME_H +# include <sys/time.h> +#else +# include <time.h> +#endif + +/* Dispatcher private data class (to ensure binary compatibility) */ + +using namespace std; +using namespace Arts; + +namespace Arts { + +class DispatcherWakeUpHandler; + +class DispatcherPrivate { +public: + GlobalComm globalComm; + InterfaceRepo interfaceRepo; + AuthAccept *accept; + LoopbackConnection *loopbackConnection; + DelayedReturn *delayedReturn; + bool allowNoAuthentication; + Mutex mutex; + + /* + * Thread condition that gets signalled whenever something relevant for + * waitForResult happens. Note that broken connections are also relevant + * for waitForResult. + */ + ThreadCondition requestResultCondition; + + /* + * Thread condition that gets signalled whenever something relevant for + * the server connection process happens. This is either: + * - authentication fails + * - authentication succeeds + * - a connection breaks + */ + ThreadCondition serverConnectCondition; + + DispatcherWakeUpHandler *wakeUpHandler; +}; + +/** + * Class that performs dispatcher wakeup. + * + * The sending thread (requesting wakeup) writes a byte to a pipe. The + * main thread watches the pipe, and as soon as the byte arrives, gets + * woken by the IOManager. This should work, no matter what type of IOManager + * is used (i.e. StdIOManager/GIOManager/QIOManager). + */ +class DispatcherWakeUpHandler : public IONotify { +private: + enum { wReceive = 0, wSend = 1 }; + int wakeUpPipe[2]; + +public: + DispatcherWakeUpHandler() + { + if(pipe(wakeUpPipe) != 0) + arts_fatal("can't initialize wakeUp pipe (%s)",strerror(errno)); + + Dispatcher::the()->ioManager()->watchFD(wakeUpPipe[wReceive], + IOType::read | IOType::reentrant, this); + } + virtual ~DispatcherWakeUpHandler() + { + Dispatcher::the()->ioManager()->remove(this, IOType::all); + + close(wakeUpPipe[wSend]); + close(wakeUpPipe[wReceive]); + } + void notifyIO(int fd, int type) + { + arts_return_if_fail(fd == wakeUpPipe[wReceive]); + arts_return_if_fail(type == IOType::read); + + mcopbyte one; + int result; + do + result = read(wakeUpPipe[wReceive],&one,1); + while(result < 0 && errno == EINTR); + } + void wakeUp() + { + mcopbyte one = 1; + + int result; + do + result = write(wakeUpPipe[wSend],&one,1); + while(result < 0 && errno == EINTR); + } +}; + +} + +Dispatcher *Dispatcher::_instance = 0; + +Dispatcher::Dispatcher(IOManager *ioManager, StartServer startServer) +{ + assert(!_instance); + _instance = this; + + /* private data pointer */ + d = new DispatcherPrivate(); + + lock(); + + /* makes arts_debug/arts_message/arts_return_if_fail/... threadsafe */ + Debug::initMutex(); + + generateServerID(); + + if(ioManager) + { + _ioManager = ioManager; + deleteIOManagerOnExit = false; + } + else + { + _ioManager = new StdIOManager; + deleteIOManagerOnExit = true; + } + + d->wakeUpHandler = new DispatcherWakeUpHandler; + + objectManager = new ObjectManager; + + notificationManager = new NotificationManager; + + if(startServer & startUnixServer) + { + unixServer = new UnixServer(this,serverID); + if(!unixServer->running()) + { + delete unixServer; + arts_warning("[mcop dispatcher] Couldn't start UnixServer"); + unixServer = 0; + } + } + else unixServer = 0; + + if(startServer & startTCPServer) + { + tcpServer = new TCPServer(this); + if(!tcpServer->running()) + { + delete tcpServer; + arts_warning("[mcop dispatcher] Couldn't start TCPServer"); + tcpServer = 0; + } + } + else tcpServer = 0; + + d->allowNoAuthentication = startServer & noAuthentication; + d->accept = 0; + d->loopbackConnection = new LoopbackConnection(serverID); + d->interfaceRepo = InterfaceRepo::_from_base(new InterfaceRepo_impl()); + d->delayedReturn = 0; + + _flowSystem = 0; + referenceClean = new ReferenceClean(objectPool); + + /* + * setup signal handler for SIGPIPE + */ + orig_sigpipe = signal(SIGPIPE,SIG_IGN); + if((orig_sigpipe != SIG_DFL) && (orig_sigpipe != SIG_IGN)) + { + cerr << "[mcop dispatcher] warning: user defined signal handler found for" + " SIG_PIPE, overriding" << endl; + } + + StartupManager::startup(); + + /* + * this is required for publishing global references - might be a good + * reason for startup priorities as since this is required for cookie&co, + * no communication is possible without that + */ + + + char *env = getenv("ARTS_SERVER"); + bool envOk = false; + if(env) + { + string url = "tcp:"; url += env; + Connection *conn = connectUrl(url); + arts_debug("connection to %s for globalComm", url.c_str()); + if(conn) + { + arts_debug("hint %s", conn->findHint("GlobalComm").c_str()); + d->globalComm = Reference(conn->findHint("GlobalComm")); + envOk = true; + arts_debug("using globalcomm from env variable"); + } + } + + if(!envOk) + { + string globalCommName + = MCOPUtils::readConfigEntry("GlobalComm","Arts::TmpGlobalComm"); + d->globalComm = GlobalComm(SubClass(globalCommName)); + } + + // --- initialize MD5auth --- + /* + * Path for random seed: better to store it in home, because some + * installations wipe /tmp on reboot. + */ + string seedpath = MCOPUtils::createFilePath("random-seed"); + string mcopdir = MCOPUtils::mcopDirectory(); + if(!mcopdir.empty()) seedpath = mcopdir + "/random-seed"; + arts_md5_auth_init_seed(seedpath.c_str()); + + /* + * first generate a new random cookie and try to set secret-cookie to it + * as put will not overwrite, this has no effect if there is already a + * secret cookie + */ + char *cookie = arts_md5_auth_mkcookie(); + globalComm().put("secret-cookie",cookie); + + /* + * Then get the secret cookie from globalComm. As we've just set one, + * and as it is never removed, this always works. + */ + string secretCookie = globalComm().get("secret-cookie"); + if(!arts_md5_auth_set_cookie(secretCookie.c_str())) + { + /* + * Handle the case where the cookie obtained from GlobalComm is not + * a valid cookie (i.e. too short) - this should practically never + * happen. In this case, we will remove the cookie and overwrite it + * with our previously generated cookie. + */ + arts_warning("[mcop dispatcher] Bad md5 secret-cookie obtained from %s - replacing it", + globalComm()._interfaceName().c_str()); + + globalComm().erase("secret-cookie"); + globalComm().put("secret-cookie",cookie); + + if(!arts_md5_auth_set_cookie(cookie)) + arts_fatal("error initializing md5 secret cookie " + "(generated cookie invalid)"); + } + memset(cookie,0,strlen(cookie)); // try to keep memory clean + free(cookie); + + string::iterator i; // try to keep memory clean from secret cookie + for(i=secretCookie.begin();i != secretCookie.end();i++) *i = 'y'; + + unlock(); +} + +Dispatcher::~Dispatcher() +{ + lock(); + + /* no interaction possible now anymore - remove our global references */ + if(objectManager) + objectManager->removeGlobalReferences(); + + /* remove everything that might have been tagged for remote copying */ + referenceClean->forceClean(); + delete referenceClean; + + d->globalComm = GlobalComm::null(); + + /* shutdown all extensions we loaded */ + if(objectManager) + objectManager->shutdownExtensions(); + + StartupManager::shutdown(); + + /* drop all open connections */ + list<Connection *>::iterator ci; + for(ci=connections.begin(); ci != connections.end();ci++) + { + Connection *conn = *ci; + conn->drop(); + } + d->requestResultCondition.wakeAll(); + d->serverConnectCondition.wakeAll(); + + /* + * remove signal handler for SIGPIPE + */ + signal(SIGPIPE,orig_sigpipe); + + + d->interfaceRepo = InterfaceRepo::null(); + + if(d->accept) + { + delete d->accept; + d->accept = 0; + } + + if(d->loopbackConnection) + { + d->loopbackConnection->_release(); + d->loopbackConnection = 0; + } + if(unixServer) + { + delete unixServer; + unixServer = 0; + } + + if(tcpServer) + { + delete tcpServer; + tcpServer = 0; + } + + if(notificationManager) + { + delete notificationManager; + notificationManager = 0; + } + + if(objectManager && Object_base::_objectCount() == 0) + { + objectManager->removeExtensions(); + delete objectManager; + objectManager = 0; + } + + if(d->wakeUpHandler) + { + delete d->wakeUpHandler; + d->wakeUpHandler = 0; + } + + if(deleteIOManagerOnExit) + { + delete _ioManager; + _ioManager = 0; + } + + if(Object_base::_objectCount()) + { + cerr << "[mcop dispatcher] warning: leaving MCOP Dispatcher and still " + << Object_base::_objectCount() << " object references alive." << endl; + list<Object_skel *> which = objectPool.enumerate(); + list<Object_skel *>::iterator i; + for(i = which.begin(); i != which.end();i++) + cerr << " - " << (*i)->_interfaceName() << endl; + } + + if(Type::_typeCount()) + { + cerr << "[mcop dispatcher] warning: leaving MCOP Dispatcher and still " + << Type::_typeCount() << " types alive." << endl; + } + + if(GenericDataPacket::_dataPacketCount()) + { + cerr << "[mcop dispatcher] warning: leaving MCOP Dispatcher and still " + << GenericDataPacket::_dataPacketCount() + << " data packets alive." << endl; + } + + Debug::freeMutex(); + + unlock(); + + /* private data pointer */ + assert(d); + delete d; + d = 0; + + assert(_instance); + _instance = 0; +} + +InterfaceRepo Dispatcher::interfaceRepo() +{ + return d->interfaceRepo; +} + +FlowSystem_impl *Dispatcher::flowSystem() +{ + assert(_flowSystem); + return _flowSystem; +} + +GlobalComm Dispatcher::globalComm() +{ + assert(!d->globalComm.isNull()); + return d->globalComm; +} + +void Dispatcher::setFlowSystem(FlowSystem_impl *fs) +{ + assert(!_flowSystem); + _flowSystem = fs; +} + +Dispatcher *Dispatcher::the() +{ + return _instance; +} + +Buffer *Dispatcher::waitForResult(long requestID, Connection *connection) +{ + bool isMainThread = SystemThreads::the()->isMainThread(); + Buffer *b = requestResultPool[requestID]; + + connection->_copy(); // Keep extra ref + + while(!b && !connection->broken()) { + if(isMainThread) + _ioManager->processOneEvent(true); + else + d->requestResultCondition.wait(d->mutex); + + b = requestResultPool[requestID]; + } + + requestResultPool.releaseSlot(requestID); + + if(connection->broken()) // connection went away before we got some result + b = 0; + + connection->_release(); // Give up extra ref + + return b; +} + +Buffer *Dispatcher::createRequest(long& requestID, long objectID, long methodID) +{ + Buffer *buffer = new Buffer; + + // write mcop header record + buffer->writeLong(MCOP_MAGIC); + buffer->writeLong(0); // message length - to be patched later + buffer->writeLong(mcopInvocation); + + // generate a request ID + requestID = requestResultPool.allocSlot(); + + // write invocation record + buffer->writeLong(objectID); + buffer->writeLong(methodID); + buffer->writeLong(requestID); + + return buffer; +} + +Buffer *Dispatcher::createOnewayRequest(long objectID, long methodID) +{ + Buffer *buffer = new Buffer; + + // write mcop header record + buffer->writeLong(MCOP_MAGIC); + buffer->writeLong(0); // message length - to be patched later + buffer->writeLong(mcopOnewayInvocation); + + // write oneway invocation record + buffer->writeLong(objectID); + buffer->writeLong(methodID); + + return buffer; +} + +void Dispatcher::handle(Connection *conn, Buffer *buffer, long messageType) +{ + _activeConnection = conn; + +#ifdef DEBUG_IO + printf("got a message %ld, %ld bytes in body\n", + messageType,buffer->remaining()); + if(conn->connState() == Connection::unknown) + cout << "connectionState = unknown" << endl; + if(conn->connState() == Connection::expectClientHello) + cout << "connectionState = expectClientHello" << endl; + if(conn->connState() == Connection::expectServerHello) + cout << "connectionState = expectServerHello" << endl; + if(conn->connState() == Connection::expectAuthAccept) + cout << "connectionState = expectAuthAccept" << endl; + if(conn->connState() == Connection::established) + cout << "connectionState = established" << endl; +#endif + switch(conn->connState()) + { + case Connection::established: + /* + * we're connected to a trusted server, so we can accept + * invocations + */ + if(messageType == mcopInvocation) { +#ifdef DEBUG_MESSAGES + printf("[got Invocation]\n"); +#endif + long objectID = buffer->readLong(); + long methodID = buffer->readLong(); + long requestID = buffer->readLong(); + + Buffer *result = new Buffer; + // write mcop header record + result->writeLong(MCOP_MAGIC); + result->writeLong(0); // message length - to be patched later + result->writeLong(mcopReturn); + + // write result record (returnCode is written by dispatch) + result->writeLong(requestID); + + // perform the request + Object_skel *object = objectPool[objectID]; + object->_copy(); + object->_dispatch(buffer,result,methodID); + object->_release(); + + assert(!buffer->readError() && !buffer->remaining()); + delete buffer; + + if(d->delayedReturn) + { + delete result; + + result = new Buffer; + result->writeLong(MCOP_MAGIC); + result->writeLong(0); // to be patched later + result->writeLong(mcopReturn); + result->writeLong(requestID); + + d->delayedReturn->initialize(conn,result); + d->delayedReturn = 0; + } + else /* return normally */ + { + result->patchLength(); + conn->qSendBuffer(result); + } + return; /* everything ok - leave here */ + } + + if(messageType == mcopReturn) + { +#ifdef DEBUG_MESSAGES + printf("[got Return]\n"); +#endif + long requestID = buffer->readLong(); + requestResultPool[requestID] = buffer; + d->requestResultCondition.wakeAll(); + + return; /* everything ok - leave here */ + } + + if(messageType == mcopOnewayInvocation) { +#ifdef DEBUG_MESSAGES + printf("[got OnewayInvocation]\n"); +#endif + long objectID = buffer->readLong(); + long methodID = buffer->readLong(); + + // perform the request + Object_skel *object = objectPool[objectID]; + object->_copy(); + object->_dispatch(buffer,methodID); + object->_release(); + + assert(!buffer->readError() && !buffer->remaining()); + delete buffer; + + return; /* everything ok - leave here */ + } + break; + + case Connection::expectServerHello: + if(messageType == mcopServerHello) + { +#ifdef DEBUG_MESSAGES + printf("[got ServerHello]\n"); +#endif + /* + * if we get a server hello, answer with a client hello + */ + ServerHello h; + h.readType(*buffer); + bool valid = (!buffer->readError() && !buffer->remaining()); + delete buffer; + + if(!valid) break; // invalid hello received -> forget it + + conn->setServerID(h.serverID); + + /* + * check if md5auth or noauth is offered by the server + */ + bool md5authSupported = false; + bool noauthSupported = false; + vector<string>::iterator ai; + for(ai = h.authProtocols.begin(); ai != h.authProtocols.end(); ai++) + { + if(*ai == "md5auth") md5authSupported = true; + if(*ai == "noauth") noauthSupported = true; + } + + if(noauthSupported) // noauth is usually easier to pass ;) + { + Buffer *helloBuffer = new Buffer; + + Header header(MCOP_MAGIC,0,mcopClientHello); + header.writeType(*helloBuffer); + ClientHello clientHello(serverID,"noauth",""); + clientHello.writeType(*helloBuffer); + + helloBuffer->patchLength(); + + conn->qSendBuffer(helloBuffer); + conn->setConnState(Connection::expectAuthAccept); + return; /* everything ok - leave here */ + } + else if(md5authSupported) + { + Buffer *helloBuffer = new Buffer; + + Header header(MCOP_MAGIC,0,mcopClientHello); + header.writeType(*helloBuffer); + ClientHello clientHello(serverID,"md5auth",""); + + const char *random_cookie = h.authSeed.c_str(); + if(strlen(random_cookie) == 32) + { + char *response = arts_md5_auth_mangle(random_cookie); + clientHello.authData = response; +#ifdef DEBUG_AUTH + printf(" got random_cookie = %s\n",random_cookie); + printf("reply with authData = %s\n",response); +#endif + free(response); + } + clientHello.writeType(*helloBuffer); + + helloBuffer->patchLength(); + + conn->qSendBuffer(helloBuffer); + conn->setConnState(Connection::expectAuthAccept); + return; /* everything ok - leave here */ + } + else + { + cerr << "[mcop dispatcher] error: don't know authentication protocol" << endl; + cerr << " server offered: "; + for(ai = h.authProtocols.begin(); ai != h.authProtocols.end(); ai++) + cerr << *ai << " "; + cerr << endl; + } + } + break; + + case Connection::expectClientHello: + if(messageType == mcopClientHello) + { +#ifdef DEBUG_MESSAGES + printf("[got ClientHello]\n"); +#endif + ClientHello c; + c.readType(*buffer); + bool valid = (!buffer->readError() && !buffer->remaining()); + delete buffer; + + if(valid && ( + (c.authProtocol == "md5auth" && c.authData == conn->cookie()) + || (c.authProtocol == "noauth" && d->allowNoAuthentication) )) + { + conn->setServerID(c.serverID); + + /* build hints only for the first connection */ + if(!d->accept) + { + d->accept = new AuthAccept(); + + d->accept->hints.push_back( + "GlobalComm="+d->globalComm.toString()); + d->accept->hints.push_back( + "InterfaceRepo="+d->interfaceRepo.toString()); + } + + Buffer *helloBuffer = new Buffer; + Header header(MCOP_MAGIC,0,mcopAuthAccept); + header.writeType(*helloBuffer); + d->accept->writeType(*helloBuffer); + + helloBuffer->patchLength(); + conn->qSendBuffer(helloBuffer); + conn->setConnState(Connection::established); + + return; /* everything ok - leave here */ + } + } + break; + + case Connection::expectAuthAccept: + if(messageType == mcopAuthAccept) + { +#ifdef DEBUG_MESSAGES + printf("[got AuthAccept]\n"); +#endif + AuthAccept a; + a.readType(*buffer); + delete buffer; +#ifdef DEBUG_MESSAGES + + vector<string>::iterator hi; + for(hi = a.hints.begin(); hi != a.hints.end(); hi++) + cout << "[got ConnectionHint] " << *hi << endl; + +#endif + + conn->setConnState(Connection::established); + conn->setHints(a.hints); + d->serverConnectCondition.wakeAll(); + return; /* everything ok - leave here */ + } + break; + + case Connection::unknown: + assert(false); + break; + } + + /* + * We shouldn't reach this point if everything went all right + */ + cerr << "[mcop dispatcher] Fatal communication error with a client" << endl; + if(conn->connState() != Connection::established) + { + cerr << "[mcop dispatcher] Authentication of this client was not successful" << endl; + cerr << "[mcop dispatcher] Connection dropped" << endl; + conn->drop(); + } +} + +long Dispatcher::addObject(Object_skel *object) +{ + long objectID = objectPool.allocSlot(); + + objectPool[objectID] = object; + return objectID; +} + +void Dispatcher::removeObject(long objectID) +{ + assert(objectPool[objectID]); + objectPool.releaseSlot(objectID); +} + +void Dispatcher::generateServerID() +{ + char *buffer; + buffer = arts_strdup_printf("%s-%04x-%08lx", + MCOPUtils::getFullHostname().c_str(), + getpid(),time(0)); + serverID = buffer; + free(buffer); +} + +string Dispatcher::objectToString(long objectID) +{ + Buffer b; + ObjectReference oref; + + oref.serverID = serverID; + oref.objectID = objectID; + + // prefer a unix domainsocket connection over a plain tcp connection + if(unixServer) oref.urls.push_back(unixServer->url()); + if(tcpServer) oref.urls.push_back(tcpServer->url()); + + oref.writeType(b); + + return b.toString("MCOP-Object"); +} + +bool Dispatcher::stringToObjectReference(ObjectReference& r, const string& s) +{ + if(strncmp(s.c_str(),"global:",7) == 0) + { + // if the object reference starts with "global:", it refers to + // a global object which can be found with the objectManager + + string lookup = objectManager->getGlobalReference(&s.c_str()[7]); + return stringToObjectReference(r,lookup); + } + + + Buffer b; + if(!b.fromString(s,"MCOP-Object")) return false; + + r.readType(b); + if(b.readError() || b.remaining()) return false; + + return true; +} + +void *Dispatcher::connectObjectLocal(ObjectReference& reference, + const string& interface) +{ + if(reference.serverID == serverID) + { + void *result = objectPool[reference.objectID]->_cast(interface); + + if(result) + { + objectPool[reference.objectID]->_copy(); + return result; + } + } + + return 0; +} + +Connection *Dispatcher::connectObjectRemote(ObjectReference& reference) +{ + if(reference.serverID == "null") // null reference? + return 0; + + if(reference.serverID == serverID) + return loopbackConnection(); + + list<Connection *>::iterator i; + + for(i=connections.begin(); i != connections.end();i++) + { + Connection *conn = *i; + + if(conn->isConnected(reference.serverID)) + { + // fixme: we should check for the existence of the object + // and increment a reference count or something like that + return conn; + } + } + + /* try to connect the server */ + vector<string>::iterator ui; + for(ui = reference.urls.begin(); ui != reference.urls.end(); ui++) + { + Connection *conn = connectUrl(*ui); + if(conn) + { + if(conn->isConnected(reference.serverID)) + { + return conn; + } + else + { + /* we connected somewhere, but not the right server ;) */ + connections.remove(conn); + conn->_release(); + } + } + } + return 0; +} + +Connection *Dispatcher::connectUrl(const string& url) +{ + Connection *conn = 0; + bool isMainThread = SystemThreads::the()->isMainThread(); + + if(strncmp(url.c_str(),"tcp:",4) == 0) + { + conn = new TCPConnection(url); + } + else if(strncmp(url.c_str(),"unix:",5) == 0) + { + conn = new UnixConnection(url); + } + + if(conn) + { + conn->_copy(); // Keep extra ref for when the connection breaks + conn->setConnState(Connection::expectServerHello); + + while((conn->connState() != Connection::established) + && !conn->broken()) + { + if(isMainThread) + _ioManager->processOneEvent(true); + else + d->serverConnectCondition.wait(d->mutex); + } + + if(conn->connState() == Connection::established) + { + connections.push_back(conn); + conn->_release(); // Give up extra ref + return conn; + } + + // well - bad luck (building a connection failed) + + // Give up extra ref + conn->_release(); + } + return 0; +} + +void Dispatcher::run() +{ + assert(SystemThreads::the()->isMainThread()); + + _ioManager->run(); +} + +void Dispatcher::terminate() +{ + _ioManager->terminate(); +} + +void Dispatcher::initiateConnection(Connection *connection) +{ + vector<string> authProtocols; + authProtocols.push_back("md5auth"); + + if(d->allowNoAuthentication) + authProtocols.push_back("noauth"); + + char *authSeed = arts_md5_auth_mkcookie(); + char *authResult = arts_md5_auth_mangle(authSeed); + + Buffer *helloBuffer = new Buffer; + + Header header(MCOP_MAGIC,0,mcopServerHello); + header.writeType(*helloBuffer); + ServerHello serverHello("aRts/MCOP-1.0.0",serverID,authProtocols,authSeed); + serverHello.writeType(*helloBuffer); + + helloBuffer->patchLength(); + + connection->qSendBuffer(helloBuffer); + connection->setConnState(Connection::expectClientHello); + + connection->setCookie(authResult); + free(authSeed); + free(authResult); + + connections.push_back(connection); +} + +void Dispatcher::handleCorrupt(Connection *connection) +{ + if(connection->connState() != Connection::established) + { + cerr << "[mcop dispatcher] Received corrupt message on unauthenticated connection" <<endl; + cerr << "closing connection." << endl; + connection->drop(); + d->serverConnectCondition.wakeAll(); + } + else + { + cerr << "[mcop dispatcher] warning: got corrupt MCOP message !??" << endl; + } +} + +void Dispatcher::handleConnectionClose(Connection *connection) +{ + /* + * we can't use enumerate here, because the "existing objects list" might + * be changing due to the other _disconnectRemote calls we make, so we + * enumerate() the objects manually + */ + unsigned long l; + for(l=0; l<objectPool.max(); l++) + { + Object_skel *skel = objectPool[l]; + if(skel) skel->_disconnectRemote(connection); + } + + d->requestResultCondition.wakeAll(); + d->serverConnectCondition.wakeAll(); + + /* + * FIXME: + * + * there may be error handling to do (e.g., check that the _stub's that + * still refer to that connection don't crash now). + */ + connection->_release(); + + list<Connection *>::iterator i; + for(i=connections.begin(); i != connections.end();i++) + { + if(*i == connection) + { + connections.erase(i); + return; + } + } +} + +Connection *Dispatcher::activeConnection() +{ + return _activeConnection; +} + +Connection *Dispatcher::loopbackConnection() +{ + return d->loopbackConnection; +} + +DelayedReturn *Dispatcher::delayReturn() +{ + assert(!d->delayedReturn); + + return d->delayedReturn = new DelayedReturn(); +} + +Object_skel *Dispatcher::getLocalObject(long objectID) +{ + Object_skel *result = objectPool[objectID]; + + if(result) result->_copy(); + return result; +} + +void Dispatcher::lock() +{ + _instance->d->mutex.lock(); +} + +void Dispatcher::unlock() +{ + _instance->d->mutex.unlock(); +} + +void Dispatcher::wakeUp() +{ + if(SystemThreads::the()->isMainThread()) return; + + _instance->d->wakeUpHandler->wakeUp(); +} + +/* +void Dispatcher::reloadTraderData() is declared in trader_impl.cpp +*/ |