pegasus/src/Pegasus/Common/HTTPAcceptor.cpp - diff

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Diff for /pegasus/src/Pegasus/Common/HTTPAcceptor.cpp between version 1.24.6.2 and 1.55

version 1.24.6.2, 2003/02/12 00:42:48

version 1.55, 2005/01/15 00:42:09

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//%/////////////////////////////////////////////////////////////////////////////

//%2004////////////////////////////////////////////////////////////////////////

// The Open Group, Tivoli Systems

// Company, L.P.; IBM Corp.; The Open Group; Tivoli Systems.

// IBM Corp.; EMC Corporation, The Open Group.

// IBM Corp.; EMC Corporation; VERITAS Software Corporation; The Open Group.

// Permission is hereby granted, free of charge, to any person obtaining a copy

// of this software and associated documentation files (the "Software"), to

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// Modified By:

// Jenny Yu, Hewlett-Packard Company (jenny_yu@hp.com)

// Nag Boranna, Hewlett-Packard Company (nagaraja_boranna@hp.com)

// Dave Rosckes (rosckes@us.ibm.com)

// Denise Eckstein (denise.eckstein@hp.com)

// Alagaraja Ramasubramanian (alags_raj@in.ibm.com) for Bug#1090

// Amit Arora, IBM (amita@in.ibm.com) for Bug#2541

//%/////////////////////////////////////////////////////////////////////////////

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#include <windows.h>

#else

# include <cctype>

# ifdef PEGASUS_LOCAL_DOMAIN_SOCKET

# include <unistd.h>

# include <sys/un.h>

# endif

# include <cstdlib>

# include <errno.h>

# include <fcntl.h>

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# include <netinet/in.h>

# include <arpa/inet.h>

# include <sys/socket.h>

# ifdef PEGASUS_LOCAL_DOMAIN_SOCKET

# include <unistd.h>

# include <sys/un.h>

# endif

#endif

#include "Socket.h"

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#include "HTTPAcceptor.h"

#include "HTTPConnection.h"

#include "Tracer.h"

#include <Pegasus/Common/MessageLoader.h> //l10n

#ifdef PEGASUS_PLATFORM_OS400_ISERIES_IBM

#include "OS400ConvertChar.h"

#endif

PEGASUS_USING_STD;

PEGASUS_NAMESPACE_BEGIN

static int MAX_CONNECTION_QUEUE_LENGTH = -1;

////////////////////////////////////////////////////////////////////////////////

// HTTPAcceptorRep

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#if defined(PEGASUS_PLATFORM_ZOS_ZSERIES_IBM)

size_t address_size;

#elif defined(PEGASUS_PLATFORM_AIX_RS_IBMCXX) || defined(PEGASUS_PLATFORM_LINUX_IX86_GNU) || defined(PEGASUS_PLATFORM_LINUX_GENERIC_GNU)

#elif defined(PEGASUS_PLATFORM_AIX_RS_IBMCXX) || defined(PEGASUS_PLATFORM_LINUX_GENERIC_GNU) || (defined(PEGASUS_PLATFORM_SOLARIS_SPARC_CC) && !defined(SUNOS_5_6))

socklen_t address_size;

#else

int address_size;

#endif

Mutex _connection_mut;

Sint32 socket;

Array<HTTPConnection*> connections;

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MessageQueue* outputMessageQueue,

Boolean localConnection,

Uint32 portNumber,

SSLContext * sslcontext)

SSLContext * sslcontext,

Boolean exportConnection)

: Base(PEGASUS_QUEUENAME_HTTPACCEPTOR), // ATTN: Need unique names?

_monitor(monitor),

_outputMessageQueue(outputMessageQueue),

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_entry_index(-1),

_localConnection(localConnection),

_portNumber(portNumber),

_sslcontext(sslcontext)

_sslcontext(sslcontext),

_exportConnection(exportConnection)

{

Socket::initializeInterface();

Platforms interpret the value of MAX_CONNECTION_QUEUE_LENGTH differently. Some platforms interpret

the value literally, while others multiply a fudge factor. When the server is under

stress from multiple clients with multiple requests, toggling this number may prevent clients from

being dropped. Instead of hard coding the value, we allow an environment variable to be set which

specifies a number greater than the maximum concurrent client connections possible. If this environment

var is not specified, then MAX_CONNECTION_QUEUE_LENGTH = 15.

//To engage runtime backlog queue length: uncomment the following block AND comment out the line MAX_CONNECTION_QUEUE_LENGTH = 15

if(MAX_CONNECTION_QUEUE_LENGTH == -1){

#ifdef PEGASUS_PLATFORM_OS400_ISERIES_IBM

#pragma convert(37)

const char* env = getenv("PEGASUS_MAX_BACKLOG_CONNECTION_QUEUE");

EtoA(env);

#pragma convert(0)

#else

const char* env = getenv("PEGASUS_MAX_BACKLOG_CONNECTION_QUEUE");

#endif

if(!env){

MAX_CONNECTION_QUEUE_LENGTH = 15;

}else{

char *end = NULL;

MAX_CONNECTION_QUEUE_LENGTH = strtol(env, &end, 10);

if(*end)

MAX_CONNECTION_QUEUE_LENGTH = 15;

cout << " MAX_CONNECTION_QUEUE_LENGTH = " << MAX_CONNECTION_QUEUE_LENGTH << endl;

}

MAX_CONNECTION_QUEUE_LENGTH = 15;

}

HTTPAcceptor::~HTTPAcceptor()

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else

{

// ATTN! this can't happen!

Tracer::trace(TRC_DISCARDED_DATA, Tracer::LEVEL2,

"HTTPAcceptor::handleEnqueue: Invalid SOCKET_MESSAGE received.");

}

break;

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CloseConnectionMessage* closeConnectionMessage

= (CloseConnectionMessage*)message;

AutoMutex autoMut(_rep->_connection_mut);

for (Uint32 i = 0, n = _rep->connections.size(); i < n; i++)

{

HTTPConnection* connection = _rep->connections[i];

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break;

}

break;

}

default:

// ATTN: need unexpected message error!

Tracer::trace(TRC_DISCARDED_DATA, Tracer::LEVEL2,

"HTTPAcceptor::handleEnqueue: Invalid MESSAGE received.");

break;

};

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Message* message = dequeue();

if (!message)

{

Tracer::trace(TRC_DISCARDED_DATA, Tracer::LEVEL2,

"HTTPAcceptor::handleEnqueue(): No message on queue.");

return;

}

handleEnqueue(message);

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void HTTPAcceptor::bind()

{

if (_rep)

if (_rep){

throw BindFailedException("HTTPAcceptor already bound");

//l10n

//throw BindFailedException("HTTPAcceptor already bound");

MessageLoaderParms parms("Common.HTTPAcceptor.ALREADY_BOUND",

"HTTPAcceptor already bound");

Tracer::trace(TRC_DISCARDED_DATA, Tracer::LEVEL2,

"HTTPAcceptor::bind: HTTPAcceptor already bound.");

throw BindFailedException(parms);

}

_rep = new HTTPAcceptorRep(_localConnection);

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AF_UNIX;

strcpy(reinterpret_cast<struct sockaddr_un*>(_rep->address)->sun_path,

PEGASUS_LOCAL_DOMAIN_SOCKET_PATH);

#ifdef PEGASUS_PLATFORM_OS400_ISERIES_IBM

AtoE(reinterpret_cast<struct sockaddr_un*>(_rep->address)->sun_path);

#endif

::unlink(reinterpret_cast<struct sockaddr_un*>(_rep->address)->sun_path);

#else

PEGASUS_ASSERT(false);

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{

delete _rep;

_rep = 0;

throw BindFailedException("Failed to create socket");

//l10n

//throw BindFailedException("Failed to create socket");

MessageLoaderParms parms("Common.HTTPAcceptor.FAILED_CREATE_SOCKET",

"Failed to create socket");

Tracer::trace(TRC_DISCARDED_DATA, Tracer::LEVEL2,

"HTTPAcceptor::_bind _rep->socket < 0");

throw BindFailedException(parms);

}

// set the close-on-exec bit for this file handle.

// any unix that forks needs this bit set.

#ifndef PEGASUS_PLATFORM_WIN32_IX86_MSVC

int sock_flags;

if( (sock_flags = fcntl(_rep->socket, F_GETFD, 0)) < 0)

{

PEG_TRACE_STRING(TRC_DISCARDED_DATA, Tracer::LEVEL2,

"HTTPAcceptor::_bind: fcntl(F_GETFD) failed");

}

else

{

sock_flags |= FD_CLOEXEC;

if (fcntl(_rep->socket, F_SETFD, sock_flags) < 0)

{

PEG_TRACE_STRING(TRC_DISCARDED_DATA, Tracer::LEVEL2,

"HTTPAcceptor::_bind: fcntl(F_SETFD) failed");

}

#endif

// Set the socket option SO_REUSEADDR to reuse the socket address so

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if (setsockopt(_rep->socket, SOL_SOCKET, SO_REUSEADDR,

(char *)&opt, sizeof(opt)) < 0)

{

Socket::close(_rep->socket);

delete _rep;

_rep = 0;

throw BindFailedException("Failed to set socket option");

//l10n

//throw BindFailedException("Failed to set socket option");

MessageLoaderParms parms("Common.HTTPAcceptor.FAILED_SET_SOCKET_OPTION",

"Failed to set socket option");

PEG_TRACE_STRING(TRC_DISCARDED_DATA, Tracer::LEVEL2,

"HTTPAcceptor::_bind: Failed to set socket option.");

throw BindFailedException(parms);

}

// Bind socket to port:

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Socket::close(_rep->socket);

delete _rep;

_rep = 0;

throw BindFailedException("Failed to bind socket");

//l10n

//throw BindFailedException("Failed to bind socket");

MessageLoaderParms parms("Common.HTTPAcceptor.FAILED_BIND_SOCKET",

"Failed to bind socket");

PEG_TRACE_STRING(TRC_DISCARDED_DATA, Tracer::LEVEL2,

"HTTPAcceptor::_bind: Failed to bind socket.");

throw BindFailedException(parms);

}

// Change permissions on Linux local domain socket to allow writes by others.

#if defined(PEGASUS_LOCAL_DOMAIN_SOCKET) && defined(PEGASUS_PLATFORM_LINUX_GENERIC_GNU)

if (_localConnection)

{

if (::chmod( PEGASUS_LOCAL_DOMAIN_SOCKET_PATH,

S_IRUSR | S_IWUSR | S_IXUSR |

S_IRGRP | S_IWGRP | S_IXGRP |

S_IROTH | S_IWOTH | S_IXOTH ) < 0 )

{

Socket::close(_rep->socket);

delete _rep;

_rep = 0;

//l10n

//throw BindFailedException("Failed to bind socket");

MessageLoaderParms parms("Common.HTTPAcceptor.FAILED_BIND_SOCKET",

"Failed to bind socket");

PEG_TRACE_STRING(TRC_DISCARDED_DATA, Tracer::LEVEL2,

"HTTPAcceptor::_bind: Failed to set domain socket permissions.");

throw BindFailedException(parms);

}

#endif

// Set up listening on the given socket:

int const MAX_CONNECTION_QUEUE_LENGTH = 5;

//int const MAX_CONNECTION_QUEUE_LENGTH = 15;

if (listen(_rep->socket, MAX_CONNECTION_QUEUE_LENGTH) < 0)

{

Socket::close(_rep->socket);

delete _rep;

_rep = 0;

throw BindFailedException("Failed to bind socket");

//l10n

//throw BindFailedException("Failed to bind socket");

MessageLoaderParms parms("Common.HTTPAcceptor.FAILED_BIND_SOCKET",

"Failed to bind socket");

PEG_TRACE_STRING(TRC_DISCARDED_DATA, Tracer::LEVEL2,

"HTTPAcceptor::_bind: Failed to bind socket(1).");

throw BindFailedException(parms);

}

// Register to receive SocketMessages on this socket:

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Socket::close(_rep->socket);

delete _rep;

_rep = 0;

throw BindFailedException("Failed to solicit socket messaeges");

//l10n

//throw BindFailedException("Failed to solicit socket messaeges");

MessageLoaderParms parms("Common.HTTPAcceptor.FAILED_SOLICIT_SOCKET_MESSAGES",

"Failed to solicit socket messaeges");

PEG_TRACE_STRING(TRC_DISCARDED_DATA, Tracer::LEVEL2,

"HTTPAcceptor::_bind: Failed to solicit socket messages(2).");

throw BindFailedException(parms);

}

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if (_rep)

{

// unregister the socket

_monitor->unsolicitSocketMessages(_rep->socket);

// ATTN - comment out - see CIMServer::stopClientConnection()

//_monitor->unsolicitSocketMessages(_rep->socket);

// close the socket

Socket::close(_rep->socket);

}

else

{

PEG_TRACE_STRING(TRC_DISCARDED_DATA, Tracer::LEVEL2,

"HTTPAcceptor::closeConnectionSocket failure _rep is null." );

}

/**

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{

_bind();

}

else

{

PEG_TRACE_STRING(TRC_DISCARDED_DATA, Tracer::LEVEL2,

"HTTPAcceptor::reopenConnectionSocket failure _rep is null." );

}

/**

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Uint32 HTTPAcceptor::getOutstandingRequestCount()

{

Uint32 count = 0;

AutoMutex autoMut(_rep->_connection_mut);

if (_rep->connections.size() > 0)

{

HTTPConnection* connection = _rep->connections[0];

return(connection->getRequestCount());

count = connection->getRequestCount();

}

else

{

return(0);

}

return count;

}

void HTTPAcceptor::unbind()

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delete _rep;

_rep = 0;

}

else

{

PEG_TRACE_STRING(TRC_DISCARDED_DATA, Tracer::LEVEL2,

"HTTPAcceptor::unbind failure _rep is null." );

}

void HTTPAcceptor::destroyConnections()

{

// For each connection created by this object:

AutoMutex autoMut(_rep->_connection_mut);

for (Uint32 i = 0, n = _rep->connections.size(); i < n; i++)

{

HTTPConnection* connection = _rep->connections[i];

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}

_rep->connections.clear();

}

void HTTPAcceptor::_acceptConnection()

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struct sockaddr* accept_address;

#if defined(PEGASUS_PLATFORM_ZOS_ZSERIES_IBM)

size_t address_size;

#elif defined(PEGASUS_PLATFORM_AIX_RS_IBMCXX) || defined(PEGASUS_PLATFORM_LINUX_IX86_GNU) || defined(PEGASUS_PLATFORM_LINUX_GENERIC_GNU)

#elif defined(PEGASUS_PLATFORM_AIX_RS_IBMCXX) || defined(PEGASUS_PLATFORM_LINUX_GENERIC_GNU) || (defined(PEGASUS_OS_SOLARIS) && !defined(SUNOS_5_6))

socklen_t address_size;

#else

int address_size;

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if (socket < 0)

{

PEG_TRACE_STRING(TRC_HTTP, Tracer::LEVEL2,

Logger::put(Logger::STANDARD_LOG, System::CIMSERVER, Logger::TRACE,

"HTTPAcceptor - accept() failure. errno: $0"

,errno);

PEG_TRACE_STRING(TRC_DISCARDED_DATA, Tracer::LEVEL2,

"HTTPAcceptor: accept() failed");

return;

}

// set the close on exec flag

#ifndef PEGASUS_PLATFORM_WIN32_IX86_MSVC

int sock_flags;

if( (sock_flags = fcntl(socket, F_GETFD, 0)) < 0)

{

PEG_TRACE_STRING(TRC_DISCARDED_DATA, Tracer::LEVEL2,

"HTTPAcceptor: fcntl(F_GETFD) failed");

}

else

{

sock_flags |= FD_CLOEXEC;

if (fcntl(socket, F_SETFD, sock_flags) < 0)

{

PEG_TRACE_STRING(TRC_DISCARDED_DATA, Tracer::LEVEL2,

"HTTPAcceptor: fcntl(F_SETFD) failed");

}

#endif

Logger::put(Logger::STANDARD_LOG, System::CIMSERVER, Logger::TRACE,

"HTTPAcceptor - accept() success. Socket: $1"

,socket);

// Create a new conection and add it to the connection list:

MP_Socket * mp_socket = new MP_Socket(socket, _sslcontext);

AutoPtr<MP_Socket> mp_socket(new MP_Socket(socket, _sslcontext, _exportConnection));

if (mp_socket->accept() < 0)

{

PEG_TRACE_STRING(TRC_HTTP, Tracer::LEVEL2,

PEG_TRACE_STRING(TRC_DISCARDED_DATA, Tracer::LEVEL2,

"HTTPAcceptor: SSL_accept() failed");

mp_socket->close();

return;

}

HTTPConnection* connection = new HTTPConnection(

HTTPConnection* connection = new HTTPConnection(_monitor, mp_socket,

_monitor, mp_socket, this, static_cast<MessageQueue *>(_outputMessageQueue));

this, static_cast<MessageQueue *>(_outputMessageQueue), _exportConnection);

// Solicit events on this new connection's socket:

int index;

if (-1 == (index = _monitor->solicitSocketMessages(

socket,

connection->getSocket(),

SocketMessage::READ | SocketMessage::EXCEPTION,

connection->getQueueId(), Monitor::CONNECTION)) )

{

// ATTN-DE-P2-2003100503::TODO::Need to enhance code to return

// an error message to Client application.

Tracer::trace(TRC_DISCARDED_DATA, Tracer::LEVEL2,

"HTTPAcceptor::_acceptConnection: Attempt to allocate entry in _entries table failed.");

delete connection;

Socket::close(socket);

return;

}

// Save the socket for cleanup later:

connection->_entry_index = index;

AutoMutex autoMut(_rep->_connection_mut);

_rep->connections.append(connection);

}

AsyncDQueue<pegasus_acceptor> pegasus_acceptor::acceptors(true, 0);

void pegasus_acceptor::close_all_acceptors(void)

{

try

{

pegasus_acceptor* temp = acceptors.remove_first();

while(temp)

{

delete temp;

temp = acceptors.remove_first();

}

catch(...)

{

}

pegasus_acceptor::pegasus_acceptor(monitor_2* monitor,

MessageQueue* outputMessageQueue,

Boolean localConnection,

Uint32 portNumber,

SSLContext* sslcontext)

: _monitor(monitor), _outputMessageQueue(outputMessageQueue),

_localConnection(localConnection), _portNumber(portNumber),

_sslcontext(sslcontext), connections(true, 0)

{

Socket::initializeInterface();

try {

acceptors.insert_first(this);

}

catch(...){

}

pegasus_acceptor::~pegasus_acceptor(void)

{

unbind();

Socket::uninitializeInterface();

try {

acceptors.remove(this);

}

catch(...){

}

void pegasus_acceptor::bind()

{

PEGASUS_SOCKLEN_SIZE addr_size;

struct sockaddr *addr;

struct sockaddr_in addr_in;

# ifdef PEGASUS_LOCAL_DOMAIN_SOCKET

struct sockaddr_un addr_un;

#endif

memset(&addr_in, 0, sizeof(addr_in));

addr_in.sin_addr.s_addr = INADDR_ANY;

addr_in.sin_family = AF_INET;

addr_in.sin_port = htons(_portNumber);

addr = (struct sockaddr*) &addr_in;

addr_size = sizeof(addr_in);

// first step: determine which kind of socket factory to initialize,

// then create the socket and bind it to an address

if(_localConnection == true){

#ifdef PEGASUS_LOCAL_DOMAIN_SOCKET

unix_socket_factory sf;

pegasus_socket temp(&sf);

_listener = temp;

memset(&addr_un, 0, sizeof(addr_un));

addr_un.sun_family = AF_UNIX;

strcpy(addr_un.sun_path, PEGASUS_LOCAL_DOMAIN_SOCKET_PATH);

#ifdef PEGASUS_PLATFORM_OS400_ISERIES_IBM

AtoE(addr_un.sun_path);

#endif

addr = (struct sockaddr*) &addr_un;

addr_size = sizeof(addr_un);

_listener.socket(AF_UNIX, SOCK_STREAM, 0);

#else

bsd_socket_factory sf;

pegasus_socket temp(&sf);

_listener = temp;

_listener.socket(AF_UNIX, SOCK_STREAM, 0);

#endif

}

else if( _sslcontext != 0 ) {

#ifdef PEGASUS_HAS_SSL

ssl_socket_factory sf;

pegasus_socket temp(&sf, _sslcontext);

#else

bsd_socket_factory sf;

pegasus_socket temp(&sf);

#endif

_listener = temp;

_listener.socket(PF_INET, SOCK_STREAM, 0);

}

else {

bsd_socket_factory sf;

pegasus_socket temp(&sf);

_listener = temp;

_listener.socket(PF_INET, SOCK_STREAM, 0);

}

_listener.bind((struct sockaddr*)addr, addr_size);

// second step: listen on the socket

_listener.listen(5);

// third step: add this listening socket to the monitor

_monitor->tickle();

_monitor->add_entry(_listener, LISTEN, this, this);

}

/** Unbind from the given port.

void pegasus_acceptor::unbind()

{

// remove the socket from the monitor

_monitor->remove_entry((Sint32)_listener);

// close the socket

_listener.close();

}

/** Close the connection socket.

void pegasus_acceptor::closeConnectionSocket()

{

unbind();

}

/** Reopen the connection socket.

void pegasus_acceptor::reopenConnectionSocket()

{

bind();

}

/** Returns the number of outstanding requests

Uint32 pegasus_acceptor::getOutstandingRequestCount()

{

return _monitor->getOutstandingRequestCount();

}

Boolean pegasus_acceptor::operator ==(const pegasus_acceptor& pa)

{

if(this == &pa)

return true;

return false;

}

Boolean pegasus_acceptor::operator ==(void* pa)

{

if((void*)this == pa)

return true;

return false;

}

pegasus_acceptor* pegasus_acceptor::find_acceptor(Boolean local, Uint32 port)

{

pegasus_acceptor* temp = 0;

try {

acceptors.try_lock(pegasus_thread_self());

temp = acceptors.next(temp);

while(temp){

if( local == true ){

if(temp->_localConnection){

acceptors.unlock();

return temp;

}

if(temp->_localConnection == local && temp->_portNumber ==port){

acceptors.unlock();

return temp;

}

temp = acceptors.next(temp);

}

acceptors.unlock();

}

catch(...){

}

return temp;

}

class m2e_rep;

void pegasus_acceptor::accept_dispatch(monitor_2_entry *entry)

{

pegasus_acceptor* myself = (pegasus_acceptor*)entry->get_accept();

HTTPConnection2* connection = new HTTPConnection2(entry->_rep->psock, myself->_outputMessageQueue);

// set the entry's dispatch parameter to point to the connection object

entry->set_dispatch ((void*)connection);

monitor_2::insert_connection(connection);

}

PEGASUS_NAMESPACE_END

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	Added in v.1.55

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