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<?php

/**

 * $Id: tapir.php 575 2008-03-28 20:52:13Z rdg $

 *

 * LICENSE INFORMATION

 *

 * This program 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.

 *

 * This program 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:

 *

 * http://www.gnu.org/copyleft/gpl.html

 *

 *

 * @author Renato De Giovanni <renato [at] cria . org . br>

 * @author Dave Vieglais (Biodiversity Research Center, University of Kansas)

 *

 * ACKNOWLEDGEMENTS

 *

 * TapirLink has been generously funded by the Biodiversity

 * Information Standards, TDWG, with resources from the Gordon and

 * Betty Moore Foundation. The Global Biodiversity Information

 * Facility, GBIF, has also been a major supporter of the TAPIR

 * initiative since its very beginning and also collaborated to

 * test this software.

 *

 * TapirLink was based on the DiGIR PHP provider, which was

 * originally developed by Dave Vieglais from the Biodiversity

 * Research Center, University of Kansas. The software is now being

 * distributed under the GPL with permission from its original

 * author. The original copyright information is also

 * reproduced below.

 *

 * --------------------------------

 *

 * Copyright (c) 2002 The University of Kansas Natural History

 * Museum and Biodiversity Research Center. All rights reserved.

 *

 * Permission is hereby granted, free of charge, to any person

 * obtaining a copy of this software and associated documentation

 * files (the "Software"), to deal with the Software without

 * restriction, including without limitation the rights to use,

 * copy, modify, merge, publish, distribute, sublicense, and/or

 * sell copies of the Software, and to permit persons to whom the

 * Software is furnished to do so, subject to the following

 * conditions:

 *

 * - Redistributions of source code must retain the above copyright

 * notice, this list of conditions and the following disclaimers.

 *

 * - Redistributions in binary form must reproduce the above

 * copyright notice, this list of conditions and the following

 * disclaimers in the documentation and/or other materials provided

 * with the distribution.

 *

 * - Neither the names of The University of Kansas Natural History

 * Museum and Biodiversity Research Center, The University of Kansas

 * at Lawrence, nor the names of its contributors may be used to

 * endorse or promote products derived from this Software without

 * specific prior written permission.

 *

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,

 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES

 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND

 * NONINFRINGEMENT. IN NO EVENT SHALL THE CONTRIBUTORS OR COPYRIGHT

 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,

 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,

 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER

 * DEALINGS IN THE SOFTWARE.

 */

// Definition of this constant can be used to indicate that

// the Web Service (tapir.php) was called

define( 'TP_RUNNING_TAPIR', 1 );

require_once('tapir_globals.php');

require_once('TpUtils.php');

require_once('TpServiceUtils.php');

require_once('TpDiagnostics.php');

require_once('TpResources.php');

require_once('TpRequest.php');

require_once('TpResponse.php');

// Register a new error handler

$old_error_handler = set_error_handler( 'TapirErrorHandler' );

// Avoid HTML in errors

ini_set( 'html_errors', false );

// Store timestamp for profiling

define( 'INITIAL_TIMESTAMP', TpUtils::MicrotimeFloat() );

// Logs

TpUtils::InitializeLogs();

// Main logger

global $g_log;

// Debug logger

global $g_dlog;

$g_dlog->debug( '[Starting debug log]' );

$g_dlog->debug( 'TapirLink version: '.TP_VERSION.' (revision '.TP_REVISION.')' );

$request_uri = ( isset( $_SERVER['REQUEST_URI'] ) ) ? $_SERVER['REQUEST_URI'] : 'null';

$g_dlog->debug( 'Request URI: '.$request_uri );

$g_dlog->debug( 'Include path: '.ini_get( 'include_path' ) );

// Set the maximum script run time

// Note: if php set safe mode is on then this can't be set from here,

// and will need to be set in php.ini file

if (! ini_get('safe_mode') ) {

	set_time_limit( TP_MAX_RUNTIME );

}

// Debugging

if ( ! defined( '_DEBUG' ) )

{

    // Load the value from a request variable called "debug", default is false

    // for security reasons

    if ( TP_ALLOW_DEBUG )

    {

        define( '_DEBUG', (bool)TpUtils::GetVar( 'debug', false ) );

    }

    else

    {

        define( '_DEBUG', false );

    }

}

// Instantiate request object

$request = new TpRequest();

// If no resource was specified in the request URI, then dump some help information

if ( ! $request->ExtractResourceCode() )

{

   include_once( 'index.php' );

   die();

}

// Get resource code and check if it's valid

$resource_code = $request->GetResourceCode();

$r_resources =& TpResources::GetInstance();

$raise_errors = false;

$r_resource =& $r_resources->GetResource( $resource_code, $raise_errors );

if ( $r_resource == null )

{

    $response = new TpResponse( $request );

    $response->ReturnError( 'Resource "'.$resource_code.'" not found.' );

    die();

}

$r_resources->SetCurrentResourceCode( $resource_code );

if ( $r_resource->GetStatus() != 'active' )

{

    $response = new TpResponse( $request );

    $response->ReturnError( 'Resource "'.$resource_code.'" is not active.' );

    die();

}

// Check PHP version

$current_version = phpversion();

if ( version_compare( $current_version, '5.0', '<' ) > 0 )

{

    if ( version_compare( $current_version, TP_MIN_PHP_VERSION, '<' ) > 0 )

    {

        $msg = 'PHP Version '.TP_MIN_PHP_VERSION.' or later required. '.

               'Some features may not be available. Detected version '.$current_version;

        TpDiagnostics::Append( DC_VERSION_MISMATCH, $msg, DIAG_WARN );

    }

}

else if ( version_compare( $current_version, '6.0', '<' ) > 0 )

{

    if ( version_compare( $current_version, '5.0.3', '<' ) > 0 )

    {

        // Avoid bug in "xml_set_start_namespace_decl_handler"

        $msg = 'Provider error: Unsupported PHP version ('.$current_version.'). To '.

               'use PHP5 it is necessary to have at least version 5.0.3';

        $response = new TpResponse( $request );

        $response->ReturnError( $msg );

        die();

    }

}

// Get parameters

if ( ! $request->InitializeParameters() or

     TpDiagnostics::Count( array( DIAG_ERROR, DIAG_FATAL ) ) )

{

    $response = new TpResponse( $request );

    $response->ReturnError( 'Failed to parse request' );

    die();

}

$operation = $request->GetOperation();

if ( $operation == 'ping' )

{

    require_once('TpPingResponse.php');

    $response = new TpPingResponse( $request );

}

else if ( $operation == 'capabilities' )

{

    require_once('TpCapabilitiesResponse.php');

    $response = new TpCapabilitiesResponse( $request );

}

else if ( $operation == 'metadata' )

{

    require_once('TpMetadataResponse.php');

    $response = new TpMetadataResponse( $request );

}

else if ( $operation == 'inventory' )

{

    require_once('TpInventoryResponse.php');

    $response = new TpInventoryResponse( $request );

}

else if ( $operation == 'search' )

{

    require_once('TpSearchResponse.php');

    $response = new TpSearchResponse( $request );

}

else

{

    // Unknown operation

    $response = new TpResponse( $request );

    $response->ReturnError( 'Unknown operation "'.$operation.'"' );

    die();

}

$response->Process();

exit();

?>