/** 

 * XML Security Library (http://www.aleksey.com/xmlsec).

 *

 * General functions.

 *

 * This is free software; see Copyright file in the source

 * distribution for preciese wording.

 * 

 * Copyright (C) 2002-2003 Aleksey Sanin <aleksey@aleksey.com>

 * Portion Copyright © 2009 Nokia Corporation and/or its subsidiary(-ies). All rights reserved. 

 */

#include "xmlsec_globals.h"

#include <stdlib.h>

#include <stdio.h>

#include <libxml2_tree.h>

#include "xmlsec_xmlsec.h"

#include "xmlsec_xmltree.h"

#include "xmlsec_keys.h"

#include "xmlsec_transforms.h"

#include "xmlsec_app.h"

#include "xmlsec_io.h"

#include "xmlsec_xkms.h"

#include "xmlsec_errors.h"

/**

 * xmlSecInit:

 *

 * Initializes XML Security Library. The depended libraries

 * (LibXML and LibXSLT) must be initialized before.

 *

 * Returns 0 on success or a negative value otherwise.

 */

EXPORT_C

int

xmlSecInit(void) {

	xmlSecErrorsInit();

    xmlSecIOInit();

#ifndef XMLSEC_NO_CRYPTO_DYNAMIC_LOADING

    if(xmlSecCryptoDLInit() < 0) {

	xmlSecError(XMLSEC_ERRORS_HERE,

		    NULL,

		    "xmlSecCryptoDLInit",

		    XMLSEC_ERRORS_R_XMLSEC_FAILED,

		    XMLSEC_ERRORS_NO_MESSAGE);

	return(-1);

    }

#endif /* XMLSEC_NO_CRYPTO_DYNAMIC_LOADING */

    if(xmlSecKeyDataIdsInit() < 0) {

	xmlSecError(XMLSEC_ERRORS_HERE,

		    NULL,

		    "xmlSecKeyDataIdsInit",

		    XMLSEC_ERRORS_R_XMLSEC_FAILED,

		    XMLSEC_ERRORS_NO_MESSAGE);

	return(-1);

    }

    if(xmlSecTransformIdsInit() < 0) {

	xmlSecError(XMLSEC_ERRORS_HERE,

		    NULL,

		    "xmlSecTransformIdsInit",

		    XMLSEC_ERRORS_R_XMLSEC_FAILED,

		    XMLSEC_ERRORS_NO_MESSAGE);

	return(-1);

    }

#ifndef XMLSEC_NO_XKMS    

    if(xmlSecXkmsRespondWithIdsInit() < 0) {

	xmlSecError(XMLSEC_ERRORS_HERE,

		    NULL,

		    "xmlSecXkmsRespondWithIdsInit",

		    XMLSEC_ERRORS_R_XMLSEC_FAILED,

		    XMLSEC_ERRORS_NO_MESSAGE);

	return(-1);

    }

    if(xmlSecXkmsServerRequestIdsInit() < 0) {

	xmlSecError(XMLSEC_ERRORS_HERE,

		    NULL,

		    "xmlSecXkmsServerRequestIdsInit",

		    XMLSEC_ERRORS_R_XMLSEC_FAILED,

		    XMLSEC_ERRORS_NO_MESSAGE);

	return(-1);

    }

#endif /* XMLSEC_NO_XKMS */

    /* we use rand() function to generate id attributes */

    srand(time(NULL));

    return(0);

}

/**

 * xmlSecShutdown:

 *

 * Clean ups the XML Security Library.

 *

 * Returns 0 on success or a negative value otherwise.

 */

EXPORT_C

int

xmlSecShutdown(void) {

    int res = 0;    

#ifndef XMLSEC_NO_XKMS    

    xmlSecXkmsServerRequestIdsShutdown();

    xmlSecXkmsRespondWithIdsShutdown();

#endif /* XMLSEC_NO_XKMS */

    xmlSecTransformIdsShutdown();

    xmlSecKeyDataIdsShutdown();

#ifndef XMLSEC_NO_CRYPTO_DYNAMIC_LOADING

    if(xmlSecCryptoDLShutdown() < 0) {

	xmlSecError(XMLSEC_ERRORS_HERE,

		    NULL,

		    "xmlSecCryptoDLShutdown",

		    XMLSEC_ERRORS_R_XMLSEC_FAILED,

		    XMLSEC_ERRORS_NO_MESSAGE);

	res = -1;

    }

#endif /* XMLSEC_NO_CRYPTO_DYNAMIC_LOADING */

    xmlSecIOShutdown();

    xmlSecErrorsShutdown();  

    return(res);

}

/** 

 * xmlSecCheckVersionExt:

 * @major:		the major version number.

 * @minor:		the minor version number.

 * @subminor:		the subminor version number.

 * @mode:		the version check mode.

 *

 * Checks if the loaded version of xmlsec library could be used.

 *

 * Returns 1 if the loaded xmlsec library version is OK to use

 * 0 if it is not or a negative value if an error occurs.

 */

EXPORT_C

int 

xmlSecCheckVersionExt(int major, int minor, int subminor, xmlSecCheckVersionMode mode) {

    /* we always want to have a match for major version number */

    if(major != XMLSEC_VERSION_MAJOR) {

	xmlSecError(XMLSEC_ERRORS_HERE, 

		    NULL,

		    NULL,

		    XMLSEC_ERRORS_R_XMLSEC_FAILED,

		    "expected major version=%d;real major version=%d",

		    XMLSEC_VERSION_MAJOR, major);

	return(0);

    }

    switch(mode) {

    case xmlSecCheckVersionExact:

	if((minor != XMLSEC_VERSION_MINOR) || (subminor != XMLSEC_VERSION_SUBMINOR)) {

	    xmlSecError(XMLSEC_ERRORS_HERE, 

			NULL,

			NULL,

			XMLSEC_ERRORS_R_XMLSEC_FAILED,

			"mode=exact;expected minor version=%d;real minor version=%d;expected subminor version=%d;real subminor version=%d",

			XMLSEC_VERSION_MINOR, minor,

			XMLSEC_VERSION_SUBMINOR, subminor);

	    return(0);

	}

	break;

    case xmlSecCheckVersionABICompatible:

	if((minor < XMLSEC_VERSION_MINOR) ||

	   ((minor == XMLSEC_VERSION_MINOR) && 

	    (subminor < XMLSEC_VERSION_SUBMINOR))) {

	    xmlSecError(XMLSEC_ERRORS_HERE, 

			NULL,

			NULL,

			XMLSEC_ERRORS_R_XMLSEC_FAILED,

			"mode=abi compatible;expected minor version=%d;real minor version=%d;expected subminor version=%d;real subminor version=%d",

			XMLSEC_VERSION_MINOR, minor,

			XMLSEC_VERSION_SUBMINOR, subminor);

	    return(0);

	}

	break;

    }

    return(1);

}