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BUG#:5599
TITLE: Avoid double search through user database on each request

DESCRIPTION:

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// Copyright (c) 2003 BMC Software; Hewlett-Packard Development Company, L.P.;
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// Copyright (c) 2004 BMC Software; Hewlett-Packard Development Company, L.P.;
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// Copyright (c) 2005 Hewlett-Packard Development Company, L.P.; IBM Corp.;
// EMC Corporation; VERITAS Software Corporation; The Open Group.
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#include <Pegasus/Common/Logger.h>
#include <Pegasus/Common/Tracer.h>
#include <Pegasus/Common/Base64.h>
#include <Pegasus/Config/ConfigManager.h>

#include "SecureBasicAuthenticator.h"
#include "PAMBasicAuthenticator.h"
#include "BasicAuthenticationHandler.h"


PEGASUS_USING_STD;

PEGASUS_NAMESPACE_BEGIN


BasicAuthenticationHandler::BasicAuthenticationHandler()
{
    PEG_METHOD_ENTER(TRC_AUTHENTICATION, 
        "BasicAuthenticationHandler::BasicAuthenticationHandler()");

#ifdef PEGASUS_PAM_AUTHENTICATION
    _basicAuthenticator = (BasicAuthenticator*) new PAMBasicAuthenticator();
#else
    _basicAuthenticator = (BasicAuthenticator*) new SecureBasicAuthenticator();
#endif

    PEG_METHOD_EXIT();
}

BasicAuthenticationHandler::~BasicAuthenticationHandler()
{
    PEG_METHOD_ENTER(TRC_AUTHENTICATION, 
        "BasicAuthenticationHandler::~BasicAuthenticationHandler()");

    delete _basicAuthenticator;

    PEG_METHOD_EXIT();
}

Boolean BasicAuthenticationHandler::authenticate(    
    const String& authHeader,
    AuthenticationInfo* authInfo)
{
    PEG_METHOD_ENTER(
        TRC_AUTHENTICATION, "BasicAuthenticationHandler::authenticate()");

    Boolean authenticated = false;

    //
    // copy userPass string to char array for decoding
    //
    Buffer userPassArray;

    Uint32 length = authHeader.size();

    userPassArray.reserveCapacity( length );
    userPassArray.clear();

    for( Uint32 i = 0; i < length; i++ )
    {
        userPassArray.append( static_cast<char>(authHeader[i]) );
    }

    //
    // base64 decode the userPass array
    //
    Buffer  decodedArray;

    decodedArray = Base64::decode( userPassArray );

    String decodedStr = 
        String( (const char*)decodedArray.getData(), decodedArray.size() );

    Uint32 pos = decodedStr.find(':');

    if (pos == PEG_NOT_FOUND)
    {
        PEG_METHOD_EXIT();
        return (authenticated);
    }

    String userName = decodedStr.subString(0, pos);

    String password = decodedStr.subString(pos + 1);

#ifdef PEGASUS_OS_OS400
    // OS400 APIs require user profile to be uppercase
    for(int i=0; i < userName.size(); i++)
    {
	userName[i] = toupper(userName[i]);
    }
#endif

#ifdef PEGASUS_WMIMAPPER
    authenticated = true;

    authInfo->setAuthenticatedUser(userName);
    authInfo->setAuthenticatedPassword(password);
#else

    authenticated = _basicAuthenticator->authenticate(userName, password);

    if (authenticated)
    {
        authInfo->setAuthenticatedUser(userName);
    }
    else
    {
        //
        //  Log a message for basic authentication failure
        //
        Logger::put_l (Logger::STANDARD_LOG, System::CIMSERVER,
                       Logger::INFORMATION,  BASIC_AUTHENTICATION_FAILED_KEY, 
                       BASIC_AUTHENTICATION_FAILED, userName );
    }
#endif

    PEG_METHOD_EXIT();

    return (authenticated);
}

Boolean BasicAuthenticationHandler::validateUser(const String& userName)
{
    return _basicAuthenticator->validateUser(userName);
}

String BasicAuthenticationHandler::getAuthResponseHeader(
    const String& authType,
    const String& userName,
    AuthenticationInfo* authInfo)
{
    PEG_METHOD_ENTER(TRC_AUTHENTICATION, 
        "BasicAuthenticationHandler::getAuthResponseHeader()");

    String respHeader = _basicAuthenticator->getAuthResponseHeader();

    PEG_METHOD_EXIT();

    return (respHeader);
}

PEGASUS_NAMESPACE_END