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

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Diff for /pegasus/src/Pegasus/Common/HTTPAcceptor.cpp between version 1.1.2.6 and 1.58

version 1.1.2.6, 2001/08/17 03:06:23

version 1.58, 2005/02/06 21:13:14

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

//%2005////////////////////////////////////////////////////////////////////////

// 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.

// 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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// Author: Mike Brasher (mbrasher@bmc.com)

// 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

// Roger Kumpf, Hewlett-Packard Company (roger_kumpf@hp.com)

// Sean Keenan, Hewlett-Packard Company (sean.keenan@hp.com)

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

#include <iostream>

#include "Config.h"

#include "Constants.h"

#include <iostream>

#include "Socket.h"

#ifdef PEGASUS_OS_TYPE_WINDOWS

#ifdef PEGASUS_PLATFORM_WIN32_IX86_MSVC

# include <winsock.h>

#include <windows.h>

#else

# include <cctype>

# include <unistd.h>

# 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"

#include "TLS.h"

#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

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

struct HTTPAcceptorRep

class HTTPAcceptorRep

{

public:

HTTPAcceptorRep(Boolean local)

{

struct sockaddr_in address;

if (local)

{

#ifdef PEGASUS_LOCAL_DOMAIN_SOCKET

address = reinterpret_cast<struct sockaddr*>(new struct sockaddr_un);

address_size = sizeof(struct sockaddr_un);

#else

PEGASUS_ASSERT(false);

#endif

}

else

{

address = reinterpret_cast<struct sockaddr*>(new struct sockaddr_in);

address_size = sizeof(struct sockaddr_in);

}

struct sockaddr* address;

#if defined(PEGASUS_PLATFORM_ZOS_ZSERIES_IBM) || defined(PEGASUS_OS_VMS)

size_t address_size;

#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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////////////////////////////////////////////////////////////////////////////////

HTTPAcceptor::HTTPAcceptor(Monitor* monitor, MessageQueue* outputMessageQueue)

HTTPAcceptor::HTTPAcceptor(Monitor* monitor,

: _monitor(monitor), _outputMessageQueue(outputMessageQueue), _rep(0)

MessageQueue* outputMessageQueue,

Boolean localConnection,

Uint32 portNumber,

SSLContext * sslcontext,

Boolean exportConnection)

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

_monitor(monitor),

_outputMessageQueue(outputMessageQueue),

_rep(0),

_entry_index(-1),

_localConnection(localConnection),

_portNumber(portNumber),

_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()

{

unbind();

// ATTN: Is this correct in a multi-HTTPAcceptor server?

Socket::uninitializeInterface();

}

void HTTPAcceptor::handleEnqueue()

void HTTPAcceptor::handleEnqueue(Message *message)

{

// cout << "HTTPAcceptor::handleEnqueue()" << endl;

Message* message = dequeue();

if (!message)

return;

if (getenv("PEGASUS_TRACE"))

message->print(cout);

switch (message->getType())

{

case SOCKET_MESSAGE:

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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;

};

delete message;

}

void HTTPAcceptor::bind(Uint32 portNumber)

void HTTPAcceptor::handleEnqueue()

{

if (_rep)

Message* message = dequeue();

throw BindFailed("HTTPAcceptor already bound");

_rep = new HTTPAcceptorRep;

if (!message)

{

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

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

return;

}

handleEnqueue(message);

}

void HTTPAcceptor::bind()

{

if (_rep){

//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);

// bind address

_bind();

return;

}

/**

_bind - creates a new server socket and bind socket to the port address.

If PEGASUS_LOCAL_DOMAIN_SOCKET is defined, the port number is ignored and

a domain socket is bound.

void HTTPAcceptor::_bind()

{

// Create address:

memset(&_rep->address, 0, sizeof(_rep->address));

memset(_rep->address, 0, sizeof(*_rep->address));

_rep->address.sin_addr.s_addr = INADDR_ANY;

_rep->address.sin_family = AF_INET;

if (_localConnection)

_rep->address.sin_port = htons(portNumber);

{

#ifdef PEGASUS_LOCAL_DOMAIN_SOCKET

reinterpret_cast<struct sockaddr_un*>(_rep->address)->sun_family =

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);

#endif

}

else

{

reinterpret_cast<struct sockaddr_in*>(_rep->address)->sin_addr.s_addr =

INADDR_ANY;

reinterpret_cast<struct sockaddr_in*>(_rep->address)->sin_family =

AF_INET;

reinterpret_cast<struct sockaddr_in*>(_rep->address)->sin_port =

htons(_portNumber);

}

// Create socket:

if (_localConnection)

{

_rep->socket = socket(AF_UNIX, SOCK_STREAM, 0);

}

else

{

_rep->socket = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);

}

if (_rep->socket < 0)

{

delete _rep;

_rep = 0;

throw BindFailed("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.

#if !defined PEGASUS_PLATFORM_WIN32_IX86_MSVC && !defined(PEGASUS_OS_VMS)

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

// that we can rebind to a new socket using the same address when we

// need to resume the cimom as a result of a timeout during a Shutdown

// operation.

int opt=1;

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

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

{

Socket::close(_rep->socket);

delete _rep;

_rep = 0;

//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:

if (::bind(_rep->socket,

if (::bind(_rep->socket, _rep->address, _rep->address_size) < 0)

(struct sockaddr*)(void*)&_rep->address,

{

sizeof(_rep->address)) < 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 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;

throw BindFailed("Failed to bind socket to port");

//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 port:

// 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 BindFailed("Failed to bind socket to port");

//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:

if (!_monitor->solicitSocketMessages(

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

_rep->socket,

SocketMessage::READ | SocketMessage::EXCEPTION,

getQueueId()))

getQueueId(),

Monitor::ACCEPTOR)))

{

Socket::close(_rep->socket);

delete _rep;

_rep = 0;

throw BindFailed("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);

}

/**

closeConnectionSocket - close the server listening socket to disallow

new client connections.

void HTTPAcceptor::closeConnectionSocket()

{

if (_rep)

{

// unregister the 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." );

}

/**

reopenConnectionSocket - creates a new server socket.

void HTTPAcceptor::reopenConnectionSocket()

{

if (_rep)

{

_bind();

}

else

{

PEG_TRACE_STRING(TRC_DISCARDED_DATA, Tracer::LEVEL2,

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

}

/**

getOutstandingRequestCount - returns the number of outstanding requests.

Uint32 HTTPAcceptor::getOutstandingRequestCount()

{

Uint32 count = 0;

AutoMutex autoMut(_rep->_connection_mut);

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

{

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

count = connection->getRequestCount();

}

return count;

}

void HTTPAcceptor::unbind()

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if (_rep)

{

Socket::close(_rep->socket);

if (_localConnection)

{

#ifdef PEGASUS_LOCAL_DOMAIN_SOCKET

::unlink(

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

#else

PEGASUS_ASSERT(false);

#endif

}

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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// Destroy the connection (causing it to close):

while (connection->refcount.value()) { }

delete connection;

}

_rep->connections.clear();

}

void HTTPAcceptor::_acceptConnection()

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// Accept the connection (populate the address):

sockaddr_in address;

struct sockaddr* accept_address;

int n = sizeof(address);

#if defined(PEGASUS_PLATFORM_ZOS_ZSERIES_IBM) || defined(PEGASUS_OS_VMS)

#if defined(PEGASUS_PLATFORM_LINUX_IX86_GNU)

size_t address_size;

Sint32 socket = accept(

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

_rep->socket, (struct sockaddr*)&address, (socklen_t *)&n);

socklen_t address_size;

#else

Sint32 socket = accept(_rep->socket, (struct sockaddr*)&address, &n);

int address_size;

#endif

if (_localConnection)

{

#ifdef PEGASUS_LOCAL_DOMAIN_SOCKET

accept_address = reinterpret_cast<struct sockaddr*>(new struct sockaddr_un);

address_size = sizeof(struct sockaddr_un);

#else

PEGASUS_ASSERT(false);

#endif

}

else

{

accept_address = reinterpret_cast<struct sockaddr*>(new struct sockaddr_in);

address_size = sizeof(struct sockaddr_in);

}

Sint32 socket = accept(_rep->socket, accept_address, &address_size);

delete accept_address;

if (socket < 0)

{

if (getenv("PEGASUS_TRACE"))

cerr <<"HTTPAcceptor: accept() failed" << endl;

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

#if !defined PEGASUS_PLATFORM_WIN32_IX86_MSVC && !defined(PEGASUS_OS_VMS)

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:

HTTPConnection* connection = new HTTPConnection(

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

_monitor, socket, this, _outputMessageQueue);

if (mp_socket->accept() < 0)

{

PEG_TRACE_STRING(TRC_DISCARDED_DATA, Tracer::LEVEL2,

"HTTPAcceptor: SSL_accept() failed");

mp_socket->close();

return;

}

HTTPConnection* connection = new HTTPConnection(_monitor, mp_socket,

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

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

int index;

if (!_monitor->solicitSocketMessages(

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

socket,

connection->getSocket(),

SocketMessage::READ | SocketMessage::EXCEPTION,

connection->getQueueId()))

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);

}

PEGASUS_NAMESPACE_END

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