| Index: nss/mozilla/security/nss/lib/libpkix/pkix/checker/pkix_targetcertchecker.c
|
| ===================================================================
|
| --- nss/mozilla/security/nss/lib/libpkix/pkix/checker/pkix_targetcertchecker.c (revision 0)
|
| +++ nss/mozilla/security/nss/lib/libpkix/pkix/checker/pkix_targetcertchecker.c (revision 0)
|
| @@ -0,0 +1,549 @@
|
| +/* ***** BEGIN LICENSE BLOCK *****
|
| + * Version: MPL 1.1/GPL 2.0/LGPL 2.1
|
| + *
|
| + * The contents of this file are subject to the Mozilla Public License Version
|
| + * 1.1 (the "License"); you may not use this file except in compliance with
|
| + * the License. You may obtain a copy of the License at
|
| + * http://www.mozilla.org/MPL/
|
| + *
|
| + * Software distributed under the License is distributed on an "AS IS" basis,
|
| + * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
|
| + * for the specific language governing rights and limitations under the
|
| + * License.
|
| + *
|
| + * The Original Code is the PKIX-C library.
|
| + *
|
| + * The Initial Developer of the Original Code is
|
| + * Sun Microsystems, Inc.
|
| + * Portions created by the Initial Developer are
|
| + * Copyright 2004-2007 Sun Microsystems, Inc. All Rights Reserved.
|
| + *
|
| + * Contributor(s):
|
| + * Sun Microsystems, Inc.
|
| + *
|
| + * Alternatively, the contents of this file may be used under the terms of
|
| + * either the GNU General Public License Version 2 or later (the "GPL"), or
|
| + * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
|
| + * in which case the provisions of the GPL or the LGPL are applicable instead
|
| + * of those above. If you wish to allow use of your version of this file only
|
| + * under the terms of either the GPL or the LGPL, and not to allow others to
|
| + * use your version of this file under the terms of the MPL, indicate your
|
| + * decision by deleting the provisions above and replace them with the notice
|
| + * and other provisions required by the GPL or the LGPL. If you do not delete
|
| + * the provisions above, a recipient may use your version of this file under
|
| + * the terms of any one of the MPL, the GPL or the LGPL.
|
| + *
|
| + * ***** END LICENSE BLOCK ***** */
|
| +/*
|
| + * pkix_targetcertchecker.c
|
| + *
|
| + * Functions for target cert validation
|
| + *
|
| + */
|
| +
|
| +
|
| +#include "pkix_targetcertchecker.h"
|
| +
|
| +/* --Private-TargetCertCheckerState-Functions------------------------------- */
|
| +
|
| +/*
|
| + * FUNCTION: pkix_TargetCertCheckerState_Destroy
|
| + * (see comments for PKIX_PL_DestructorCallback in pkix_pl_system.h)
|
| + */
|
| +static PKIX_Error *
|
| +pkix_TargetCertCheckerState_Destroy(
|
| + PKIX_PL_Object *object,
|
| + void *plContext)
|
| +{
|
| + pkix_TargetCertCheckerState *state = NULL;
|
| +
|
| + PKIX_ENTER(TARGETCERTCHECKERSTATE,
|
| + "pkix_TargetCertCheckerState_Destroy");
|
| + PKIX_NULLCHECK_ONE(object);
|
| +
|
| + /* Check that this object is a target cert checker state */
|
| + PKIX_CHECK(pkix_CheckType
|
| + (object, PKIX_TARGETCERTCHECKERSTATE_TYPE, plContext),
|
| + PKIX_OBJECTNOTTARGETCERTCHECKERSTATE);
|
| +
|
| + state = (pkix_TargetCertCheckerState *)object;
|
| +
|
| + PKIX_DECREF(state->certSelector);
|
| + PKIX_DECREF(state->extKeyUsageOID);
|
| + PKIX_DECREF(state->subjAltNameOID);
|
| + PKIX_DECREF(state->pathToNameList);
|
| + PKIX_DECREF(state->extKeyUsageList);
|
| + PKIX_DECREF(state->subjAltNameList);
|
| +
|
| +cleanup:
|
| +
|
| + PKIX_RETURN(TARGETCERTCHECKERSTATE);
|
| +}
|
| +
|
| +/*
|
| + * FUNCTION: pkix_TargetCertCheckerState_RegisterSelf
|
| + * DESCRIPTION:
|
| + * Registers PKIX_TARGETCERTCHECKERSTATE_TYPE and its related functions with
|
| + * systemClasses[]
|
| + * THREAD SAFETY:
|
| + * Not Thread Safe - for performance and complexity reasons
|
| + *
|
| + * Since this function is only called by PKIX_PL_Initialize, which should
|
| + * only be called once, it is acceptable that this function is not
|
| + * thread-safe.
|
| + */
|
| +PKIX_Error *
|
| +pkix_TargetCertCheckerState_RegisterSelf(void *plContext)
|
| +{
|
| + extern pkix_ClassTable_Entry systemClasses[PKIX_NUMTYPES];
|
| + pkix_ClassTable_Entry entry;
|
| +
|
| + PKIX_ENTER(TARGETCERTCHECKERSTATE,
|
| + "pkix_TargetCertCheckerState_RegisterSelf");
|
| +
|
| + entry.description = "TargetCertCheckerState";
|
| + entry.objCounter = 0;
|
| + entry.typeObjectSize = sizeof(pkix_TargetCertCheckerState);
|
| + entry.destructor = pkix_TargetCertCheckerState_Destroy;
|
| + entry.equalsFunction = NULL;
|
| + entry.hashcodeFunction = NULL;
|
| + entry.toStringFunction = NULL;
|
| + entry.comparator = NULL;
|
| + entry.duplicateFunction = NULL;
|
| +
|
| + systemClasses[PKIX_TARGETCERTCHECKERSTATE_TYPE] = entry;
|
| +
|
| + PKIX_RETURN(TARGETCERTCHECKERSTATE);
|
| +}
|
| +
|
| +/*
|
| + * FUNCTION: pkix_TargetCertCheckerState_Create
|
| + * DESCRIPTION:
|
| + *
|
| + * Creates a new TargetCertCheckerState using the CertSelector pointed to
|
| + * by "certSelector" and the number of certs represented by "certsRemaining"
|
| + * and stores it at "pState".
|
| + *
|
| + * PARAMETERS:
|
| + * "certSelector"
|
| + * Address of CertSelector representing the criteria against which the
|
| + * final certificate in a chain is to be matched. Must be non-NULL.
|
| + * "certsRemaining"
|
| + * Number of certificates remaining in the chain.
|
| + * "pState"
|
| + * Address where object pointer will be stored. Must be non-NULL.
|
| + * "plContext"
|
| + * Platform-specific context pointer.
|
| + * THREAD SAFETY:
|
| + * Thread Safe (see Thread Safety Definitions in Programmer's Guide)
|
| + * RETURNS:
|
| + * Returns NULL if the function succeeds.
|
| + * Returns a TargetCertCheckerState Error if the function fails in a
|
| + * non-fatal way.
|
| + * Returns a Fatal Error if the function fails in an unrecoverable way.
|
| + */
|
| +PKIX_Error *
|
| +pkix_TargetCertCheckerState_Create(
|
| + PKIX_CertSelector *certSelector,
|
| + PKIX_UInt32 certsRemaining,
|
| + pkix_TargetCertCheckerState **pState,
|
| + void *plContext)
|
| +{
|
| + pkix_TargetCertCheckerState *state = NULL;
|
| + PKIX_ComCertSelParams *certSelectorParams = NULL;
|
| + PKIX_List *pathToNameList = NULL;
|
| + PKIX_List *extKeyUsageList = NULL;
|
| + PKIX_List *subjAltNameList = NULL;
|
| + PKIX_PL_OID *extKeyUsageOID = NULL;
|
| + PKIX_PL_OID *subjAltNameOID = NULL;
|
| + PKIX_Boolean subjAltNameMatchAll = PKIX_TRUE;
|
| +
|
| + PKIX_ENTER(TARGETCERTCHECKERSTATE,
|
| + "pkix_TargetCertCheckerState_Create");
|
| + PKIX_NULLCHECK_ONE(pState);
|
| +
|
| + PKIX_CHECK(PKIX_PL_OID_Create
|
| + (PKIX_EXTENDEDKEYUSAGE_OID,
|
| + &extKeyUsageOID,
|
| + plContext),
|
| + PKIX_OIDCREATEFAILED);
|
| +
|
| + PKIX_CHECK(PKIX_PL_OID_Create
|
| + (PKIX_CERTSUBJALTNAME_OID,
|
| + &subjAltNameOID,
|
| + plContext),
|
| + PKIX_OIDCREATEFAILED);
|
| +
|
| + PKIX_CHECK(PKIX_PL_Object_Alloc
|
| + (PKIX_TARGETCERTCHECKERSTATE_TYPE,
|
| + sizeof (pkix_TargetCertCheckerState),
|
| + (PKIX_PL_Object **)&state,
|
| + plContext),
|
| + PKIX_COULDNOTCREATETARGETCERTCHECKERSTATEOBJECT);
|
| +
|
| + /* initialize fields */
|
| +
|
| + if (certSelector != NULL) {
|
| +
|
| + PKIX_CHECK(PKIX_CertSelector_GetCommonCertSelectorParams
|
| + (certSelector, &certSelectorParams, plContext),
|
| + PKIX_CERTSELECTORGETCOMMONCERTSELECTORPARAMFAILED);
|
| +
|
| + if (certSelectorParams != NULL) {
|
| +
|
| + PKIX_CHECK(PKIX_ComCertSelParams_GetPathToNames
|
| + (certSelectorParams,
|
| + &pathToNameList,
|
| + plContext),
|
| + PKIX_COMCERTSELPARAMSGETPATHTONAMESFAILED);
|
| +
|
| + PKIX_CHECK(PKIX_ComCertSelParams_GetExtendedKeyUsage
|
| + (certSelectorParams,
|
| + &extKeyUsageList,
|
| + plContext),
|
| + PKIX_COMCERTSELPARAMSGETEXTENDEDKEYUSAGEFAILED);
|
| +
|
| + PKIX_CHECK(PKIX_ComCertSelParams_GetSubjAltNames
|
| + (certSelectorParams,
|
| + &subjAltNameList,
|
| + plContext),
|
| + PKIX_COMCERTSELPARAMSGETSUBJALTNAMESFAILED);
|
| +
|
| + PKIX_CHECK(PKIX_ComCertSelParams_GetMatchAllSubjAltNames
|
| + (certSelectorParams,
|
| + &subjAltNameMatchAll,
|
| + plContext),
|
| + PKIX_COMCERTSELPARAMSGETSUBJALTNAMESFAILED);
|
| + }
|
| + }
|
| +
|
| + state->certsRemaining = certsRemaining;
|
| + state->subjAltNameMatchAll = subjAltNameMatchAll;
|
| +
|
| + PKIX_INCREF(certSelector);
|
| + state->certSelector = certSelector;
|
| +
|
| + state->pathToNameList = pathToNameList;
|
| + pathToNameList = NULL;
|
| +
|
| + state->extKeyUsageList = extKeyUsageList;
|
| + extKeyUsageList = NULL;
|
| +
|
| + state->subjAltNameList = subjAltNameList;
|
| + subjAltNameList = NULL;
|
| +
|
| + state->extKeyUsageOID = extKeyUsageOID;
|
| + extKeyUsageOID = NULL;
|
| +
|
| + state->subjAltNameOID = subjAltNameOID;
|
| + subjAltNameOID = NULL;
|
| +
|
| + *pState = state;
|
| + state = NULL;
|
| +
|
| +cleanup:
|
| +
|
| + PKIX_DECREF(extKeyUsageOID);
|
| + PKIX_DECREF(subjAltNameOID);
|
| + PKIX_DECREF(pathToNameList);
|
| + PKIX_DECREF(extKeyUsageList);
|
| + PKIX_DECREF(subjAltNameList);
|
| + PKIX_DECREF(state);
|
| +
|
| + PKIX_DECREF(certSelectorParams);
|
| +
|
| + PKIX_RETURN(TARGETCERTCHECKERSTATE);
|
| +
|
| +}
|
| +
|
| +/* --Private-TargetCertChecker-Functions------------------------------- */
|
| +
|
| +/*
|
| + * FUNCTION: pkix_TargetCertChecker_Check
|
| + * (see comments for PKIX_CertChainChecker_CheckCallback in pkix_checker.h)
|
| + */
|
| +PKIX_Error *
|
| +pkix_TargetCertChecker_Check(
|
| + PKIX_CertChainChecker *checker,
|
| + PKIX_PL_Cert *cert,
|
| + PKIX_List *unresolvedCriticalExtensions,
|
| + void **pNBIOContext,
|
| + void *plContext)
|
| +{
|
| + pkix_TargetCertCheckerState *state = NULL;
|
| + PKIX_CertSelector_MatchCallback certSelectorMatch = NULL;
|
| + PKIX_PL_CertNameConstraints *nameConstraints = NULL;
|
| + PKIX_List *certSubjAltNames = NULL;
|
| + PKIX_List *certExtKeyUsageList = NULL;
|
| + PKIX_PL_GeneralName *name = NULL;
|
| + PKIX_PL_X500Name *certSubjectName = NULL;
|
| + PKIX_Boolean checkPassed = PKIX_FALSE;
|
| + PKIX_UInt32 numItems, i;
|
| + PKIX_UInt32 matchCount = 0;
|
| +
|
| + PKIX_ENTER(CERTCHAINCHECKER, "pkix_TargetCertChecker_Check");
|
| + PKIX_NULLCHECK_THREE(checker, cert, pNBIOContext);
|
| +
|
| + *pNBIOContext = NULL; /* we never block on pending I/O */
|
| +
|
| + PKIX_CHECK(PKIX_CertChainChecker_GetCertChainCheckerState
|
| + (checker, (PKIX_PL_Object **)&state, plContext),
|
| + PKIX_CERTCHAINCHECKERGETCERTCHAINCHECKERSTATEFAILED);
|
| +
|
| + (state->certsRemaining)--;
|
| +
|
| + if (state->pathToNameList != NULL) {
|
| +
|
| + PKIX_CHECK(PKIX_PL_Cert_GetNameConstraints
|
| + (cert, &nameConstraints, plContext),
|
| + PKIX_CERTGETNAMECONSTRAINTSFAILED);
|
| +
|
| + /*
|
| + * XXX We should either make the following call a public one
|
| + * so it is legal to call from the portability layer or we
|
| + * should try to create pathToNameList as CertNameConstraints
|
| + * then call the existing check function.
|
| + */
|
| + PKIX_CHECK(PKIX_PL_CertNameConstraints_CheckNamesInNameSpace
|
| + (state->pathToNameList,
|
| + nameConstraints,
|
| + &checkPassed,
|
| + plContext),
|
| + PKIX_CERTNAMECONSTRAINTSCHECKNAMEINNAMESPACEFAILED);
|
| +
|
| + if (checkPassed != PKIX_TRUE) {
|
| + PKIX_ERROR(PKIX_VALIDATIONFAILEDPATHTONAMECHECKFAILED);
|
| + }
|
| +
|
| + }
|
| +
|
| + PKIX_CHECK(PKIX_PL_Cert_GetSubjectAltNames
|
| + (cert, &certSubjAltNames, plContext),
|
| + PKIX_CERTGETSUBJALTNAMESFAILED);
|
| +
|
| + if (state->subjAltNameList != NULL && certSubjAltNames != NULL) {
|
| +
|
| + PKIX_CHECK(PKIX_List_GetLength
|
| + (state->subjAltNameList, &numItems, plContext),
|
| + PKIX_LISTGETLENGTHFAILED);
|
| +
|
| + for (i = 0; i < numItems; i++) {
|
| +
|
| + PKIX_CHECK(PKIX_List_GetItem
|
| + (state->subjAltNameList,
|
| + i,
|
| + (PKIX_PL_Object **) &name,
|
| + plContext),
|
| + PKIX_LISTGETITEMFAILED);
|
| +
|
| + PKIX_CHECK(pkix_List_Contains
|
| + (certSubjAltNames,
|
| + (PKIX_PL_Object *) name,
|
| + &checkPassed,
|
| + plContext),
|
| + PKIX_LISTCONTAINSFAILED);
|
| +
|
| + PKIX_DECREF(name);
|
| +
|
| + if (checkPassed == PKIX_TRUE) {
|
| +
|
| + if (state->subjAltNameMatchAll == PKIX_FALSE) {
|
| + matchCount = numItems;
|
| + break;
|
| + } else {
|
| + /* else continue checking next */
|
| + matchCount++;
|
| + }
|
| +
|
| + }
|
| + }
|
| +
|
| + if (matchCount != numItems) {
|
| + PKIX_ERROR(PKIX_SUBJALTNAMECHECKFAILED);
|
| +
|
| + }
|
| + }
|
| +
|
| + if (state->certsRemaining == 0) {
|
| +
|
| + if (state->certSelector != NULL) {
|
| + PKIX_CHECK(PKIX_CertSelector_GetMatchCallback
|
| + (state->certSelector,
|
| + &certSelectorMatch,
|
| + plContext),
|
| + PKIX_CERTSELECTORGETMATCHCALLBACKFAILED);
|
| +
|
| + PKIX_CHECK(certSelectorMatch
|
| + (state->certSelector,
|
| + cert,
|
| + plContext),
|
| + PKIX_CERTSELECTORMATCHFAILED);
|
| + } else {
|
| + /* Check at least cert/key usages if target cert selector
|
| + * is not set. */
|
| + PKIX_CHECK(PKIX_PL_Cert_VerifyCertAndKeyType(cert,
|
| + PKIX_FALSE /* is chain cert*/,
|
| + plContext),
|
| + PKIX_CERTVERIFYCERTTYPEFAILED);
|
| + }
|
| + /*
|
| + * There are two Extended Key Usage Checkings
|
| + * available :
|
| + * 1) here at the targetcertchecker where we
|
| + * verify the Extended Key Usage OIDs application
|
| + * specifies via ComCertSelParams are included
|
| + * in Cert's Extended Key Usage OID's. Note,
|
| + * this is an OID to OID comparison and only last
|
| + * Cert is checked.
|
| + * 2) at user defined ekuchecker where checking
|
| + * is applied to all Certs on the chain and
|
| + * the NSS Extended Key Usage algorithm is
|
| + * used. In order to invoke this checking, not
|
| + * only does the ComCertSelparams needs to be
|
| + * set, the EKU initialize call is required to
|
| + * activate the checking.
|
| + *
|
| + * XXX We use the same ComCertSelParams Set/Get
|
| + * functions to set the parameters for both cases.
|
| + * We may want to separate them in the future.
|
| + */
|
| +
|
| + PKIX_CHECK(PKIX_PL_Cert_GetExtendedKeyUsage
|
| + (cert, &certExtKeyUsageList, plContext),
|
| + PKIX_CERTGETEXTENDEDKEYUSAGEFAILED);
|
| +
|
| +
|
| + if (state->extKeyUsageList != NULL &&
|
| + certExtKeyUsageList != NULL) {
|
| +
|
| + PKIX_CHECK(PKIX_List_GetLength
|
| + (state->extKeyUsageList, &numItems, plContext),
|
| + PKIX_LISTGETLENGTHFAILED);
|
| +
|
| + for (i = 0; i < numItems; i++) {
|
| +
|
| + PKIX_CHECK(PKIX_List_GetItem
|
| + (state->extKeyUsageList,
|
| + i,
|
| + (PKIX_PL_Object **) &name,
|
| + plContext),
|
| + PKIX_LISTGETITEMFAILED);
|
| +
|
| + PKIX_CHECK(pkix_List_Contains
|
| + (certExtKeyUsageList,
|
| + (PKIX_PL_Object *) name,
|
| + &checkPassed,
|
| + plContext),
|
| + PKIX_LISTCONTAINSFAILED);
|
| +
|
| + PKIX_DECREF(name);
|
| +
|
| + if (checkPassed != PKIX_TRUE) {
|
| + PKIX_ERROR
|
| + (PKIX_EXTENDEDKEYUSAGECHECKINGFAILED);
|
| +
|
| + }
|
| + }
|
| + }
|
| + } else {
|
| + /* Check key usage and cert type based on certificate usage. */
|
| + PKIX_CHECK(PKIX_PL_Cert_VerifyCertAndKeyType(cert, PKIX_TRUE,
|
| + plContext),
|
| + PKIX_CERTVERIFYCERTTYPEFAILED);
|
| + }
|
| +
|
| + /* Remove Critical Extension OID from list */
|
| + if (unresolvedCriticalExtensions != NULL) {
|
| +
|
| + PKIX_CHECK(pkix_List_Remove
|
| + (unresolvedCriticalExtensions,
|
| + (PKIX_PL_Object *) state->extKeyUsageOID,
|
| + plContext),
|
| + PKIX_LISTREMOVEFAILED);
|
| +
|
| + PKIX_CHECK(PKIX_PL_Cert_GetSubject
|
| + (cert, &certSubjectName, plContext),
|
| + PKIX_CERTGETSUBJECTFAILED);
|
| +
|
| + if (certSubjAltNames != NULL) {
|
| + PKIX_CHECK(pkix_List_Remove
|
| + (unresolvedCriticalExtensions,
|
| + (PKIX_PL_Object *) state->subjAltNameOID,
|
| + plContext),
|
| + PKIX_LISTREMOVEFAILED);
|
| + }
|
| +
|
| + }
|
| +
|
| +cleanup:
|
| +
|
| + PKIX_DECREF(name);
|
| + PKIX_DECREF(nameConstraints);
|
| + PKIX_DECREF(certSubjAltNames);
|
| + PKIX_DECREF(certExtKeyUsageList);
|
| + PKIX_DECREF(certSubjectName);
|
| + PKIX_DECREF(state);
|
| +
|
| + PKIX_RETURN(CERTCHAINCHECKER);
|
| +
|
| +}
|
| +
|
| +/*
|
| + * FUNCTION: pkix_TargetCertChecker_Initialize
|
| + * DESCRIPTION:
|
| + *
|
| + * Creates a new CertChainChecker and stores it at "pChecker", where it will
|
| + * used by pkix_TargetCertChecker_Check to check that the final certificate
|
| + * of a chain meets the criteria of the CertSelector pointed to by
|
| + * "certSelector". The number of certs remaining in the chain, represented by
|
| + * "certsRemaining" is used to initialize the checker's state.
|
| + *
|
| + * PARAMETERS:
|
| + * "certSelector"
|
| + * Address of CertSelector representing the criteria against which the
|
| + * final certificate in a chain is to be matched. May be NULL.
|
| + * "certsRemaining"
|
| + * Number of certificates remaining in the chain.
|
| + * "pChecker"
|
| + * Address where object pointer will be stored. Must be non-NULL.
|
| + * "plContext"
|
| + * Platform-specific context pointer.
|
| + * THREAD SAFETY:
|
| + * Thread Safe (see Thread Safety Definitions in Programmer's Guide)
|
| + * RETURNS:
|
| + * Returns NULL if the function succeeds.
|
| + * Returns a CertChainChecker Error if the function fails in a non-fatal way.
|
| + * Returns a Fatal Error if the function fails in an unrecoverable way.
|
| + */
|
| +PKIX_Error *
|
| +pkix_TargetCertChecker_Initialize(
|
| + PKIX_CertSelector *certSelector,
|
| + PKIX_UInt32 certsRemaining,
|
| + PKIX_CertChainChecker **pChecker,
|
| + void *plContext)
|
| +{
|
| + pkix_TargetCertCheckerState *state = NULL;
|
| +
|
| + PKIX_ENTER(CERTCHAINCHECKER, "pkix_TargetCertChecker_Initialize");
|
| + PKIX_NULLCHECK_ONE(pChecker);
|
| +
|
| + PKIX_CHECK(pkix_TargetCertCheckerState_Create
|
| + (certSelector, certsRemaining, &state, plContext),
|
| + PKIX_TARGETCERTCHECKERSTATECREATEFAILED);
|
| +
|
| + PKIX_CHECK(PKIX_CertChainChecker_Create
|
| + (pkix_TargetCertChecker_Check,
|
| + PKIX_FALSE,
|
| + PKIX_FALSE,
|
| + NULL,
|
| + (PKIX_PL_Object *)state,
|
| + pChecker,
|
| + plContext),
|
| + PKIX_CERTCHAINCHECKERCREATEFAILED);
|
| +
|
| +cleanup:
|
| +
|
| + PKIX_DECREF(state);
|
| +
|
| + PKIX_RETURN(CERTCHAINCHECKER);
|
| +}
|
|
|
| Property changes on: nss/mozilla/security/nss/lib/libpkix/pkix/checker/pkix_targetcertchecker.c
|
| ___________________________________________________________________
|
| Added: svn:executable
|
| + *
|
| Added: svn:eol-style
|
| + LF
|
|
|
|
|