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339 lines
11 KiB
C
339 lines
11 KiB
C
/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is the PKIX-C library.
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*
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* The Initial Developer of the Original Code is
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* Sun Microsystems, Inc.
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* Portions created by the Initial Developer are
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* Copyright 2004-2007 Sun Microsystems, Inc. All Rights Reserved.
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*
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* Contributor(s):
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* Sun Microsystems, Inc.
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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/*
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* pkix_nameconstraintschecker.c
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*
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* Functions for Name Constraints Checkers
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*
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*/
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#include "pkix_nameconstraintschecker.h"
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/* --Private-NameConstraintsCheckerState-Functions---------------------- */
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/*
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* FUNCTION: pkix_NameConstraintsCheckerstate_Destroy
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* (see comments for PKIX_PL_DestructorCallback in pkix_pl_system.h)
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*/
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static PKIX_Error *
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pkix_NameConstraintsCheckerState_Destroy(
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PKIX_PL_Object *object,
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void *plContext)
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{
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pkix_NameConstraintsCheckerState *state = NULL;
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PKIX_ENTER(CERTNAMECONSTRAINTSCHECKERSTATE,
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"pkix_NameConstraintsCheckerState_Destroy");
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PKIX_NULLCHECK_ONE(object);
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/* Check that object type */
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PKIX_CHECK(pkix_CheckType
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(object, PKIX_CERTNAMECONSTRAINTSCHECKERSTATE_TYPE, plContext),
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PKIX_OBJECTNOTNAMECONSTRAINTSCHECKERSTATE);
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state = (pkix_NameConstraintsCheckerState *)object;
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PKIX_DECREF(state->nameConstraints);
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PKIX_DECREF(state->nameConstraintsOID);
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cleanup:
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PKIX_RETURN(CERTNAMECONSTRAINTSCHECKERSTATE);
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}
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/*
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* FUNCTION: pkix_NameConstraintsCheckerState_RegisterSelf
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*
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* DESCRIPTION:
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* Registers PKIX_CERTNAMECONSTRAINTSCHECKERSTATE_TYPE and its related
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* functions with systemClasses[]
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*
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* THREAD SAFETY:
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* Not Thread Safe - for performance and complexity reasons
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*
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* Since this function is only called by PKIX_PL_Initialize, which should
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* only be called once, it is acceptable that this function is not
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* thread-safe.
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*/
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PKIX_Error *
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pkix_NameConstraintsCheckerState_RegisterSelf(void *plContext)
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{
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extern pkix_ClassTable_Entry systemClasses[PKIX_NUMTYPES];
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pkix_ClassTable_Entry entry;
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PKIX_ENTER(CERTNAMECONSTRAINTSCHECKERSTATE,
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"pkix_NameConstraintsCheckerState_RegisterSelf");
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entry.description = "NameConstraintsCheckerState";
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entry.objCounter = 0;
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entry.typeObjectSize = sizeof(pkix_NameConstraintsCheckerState);
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entry.destructor = pkix_NameConstraintsCheckerState_Destroy;
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entry.equalsFunction = NULL;
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entry.hashcodeFunction = NULL;
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entry.toStringFunction = NULL;
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entry.comparator = NULL;
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entry.duplicateFunction = NULL;
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systemClasses[PKIX_CERTNAMECONSTRAINTSCHECKERSTATE_TYPE] = entry;
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PKIX_RETURN(CERTNAMECONSTRAINTSCHECKERSTATE);
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}
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/*
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* FUNCTION: pkix_NameConstraintsCheckerState_Create
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*
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* DESCRIPTION:
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* Allocate and initialize NameConstraintsChecker state data.
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*
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* PARAMETERS
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* "nameConstraints"
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* Address of NameConstraints to be stored in state. May be NULL.
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* "numCerts"
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* Number of certificates in the validation chain. This data is used
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* to identify end-entity.
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* "pCheckerState"
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* Address of NameConstraintsCheckerState that is returned. Must be
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* non-NULL.
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* "plContext" - Platform-specific context pointer.
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*
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* THREAD SAFETY:
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* Thread Safe (see Thread Safety Definitions in Programmer's Guide)
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*
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* RETURNS:
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* Returns NULL if the function succeeds.
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* Returns a CERTNAMECONSTRAINTSCHECKERSTATE Error if the function fails in
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* a non-fatal way.
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* Returns a Fatal Error
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*/
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static PKIX_Error *
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pkix_NameConstraintsCheckerState_Create(
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PKIX_PL_CertNameConstraints *nameConstraints,
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PKIX_UInt32 numCerts,
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pkix_NameConstraintsCheckerState **pCheckerState,
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void *plContext)
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{
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pkix_NameConstraintsCheckerState *state = NULL;
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PKIX_ENTER(CERTNAMECONSTRAINTSCHECKERSTATE,
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"pkix_NameConstraintsCheckerState_Create");
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PKIX_NULLCHECK_ONE(pCheckerState);
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PKIX_CHECK(PKIX_PL_Object_Alloc
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(PKIX_CERTNAMECONSTRAINTSCHECKERSTATE_TYPE,
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sizeof (pkix_NameConstraintsCheckerState),
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(PKIX_PL_Object **)&state,
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plContext),
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PKIX_COULDNOTCREATENAMECONSTRAINTSCHECKERSTATEOBJECT);
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/* Initialize fields */
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PKIX_CHECK(PKIX_PL_OID_Create
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(PKIX_NAMECONSTRAINTS_OID,
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&state->nameConstraintsOID,
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plContext),
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PKIX_OIDCREATEFAILED);
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PKIX_INCREF(nameConstraints);
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state->nameConstraints = nameConstraints;
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state->certsRemaining = numCerts;
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*pCheckerState = state;
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state = NULL;
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cleanup:
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PKIX_DECREF(state);
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PKIX_RETURN(CERTNAMECONSTRAINTSCHECKERSTATE);
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}
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/* --Private-NameConstraintsChecker-Functions------------------------- */
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/*
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* FUNCTION: pkix_NameConstraintsChecker_Check
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* (see comments for PKIX_CertChainChecker_CheckCallback in pkix_checker.h)
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*/
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static PKIX_Error *
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pkix_NameConstraintsChecker_Check(
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PKIX_CertChainChecker *checker,
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PKIX_PL_Cert *cert,
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PKIX_List *unresolvedCriticalExtensions,
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void **pNBIOContext,
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void *plContext)
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{
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pkix_NameConstraintsCheckerState *state = NULL;
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PKIX_PL_CertNameConstraints *nameConstraints = NULL;
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PKIX_PL_CertNameConstraints *mergedNameConstraints = NULL;
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PKIX_Boolean selfIssued = PKIX_FALSE;
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PKIX_ENTER(CERTCHAINCHECKER, "pkix_NameConstraintsChecker_Check");
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PKIX_NULLCHECK_THREE(checker, cert, pNBIOContext);
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*pNBIOContext = NULL; /* we never block on pending I/O */
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PKIX_CHECK(PKIX_CertChainChecker_GetCertChainCheckerState
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(checker, (PKIX_PL_Object **)&state, plContext),
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PKIX_CERTCHAINCHECKERGETCERTCHAINCHECKERSTATEFAILED);
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state->certsRemaining--;
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/* Get status of self issued */
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PKIX_CHECK(pkix_IsCertSelfIssued(cert, &selfIssued, plContext),
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PKIX_ISCERTSELFISSUEDFAILED);
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/* Check on non self-issued and if so only for last cert */
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if (selfIssued == PKIX_FALSE ||
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(selfIssued == PKIX_TRUE && state->certsRemaining == 0)) {
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PKIX_CHECK(PKIX_PL_Cert_CheckNameConstraints
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(cert, state->nameConstraints, plContext),
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PKIX_CERTCHECKNAMECONSTRAINTSFAILED);
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}
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if (state->certsRemaining != 0) {
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PKIX_CHECK(PKIX_PL_Cert_GetNameConstraints
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(cert, &nameConstraints, plContext),
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PKIX_CERTGETNAMECONSTRAINTSFAILED);
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/* Merge with previous name constraints kept in state */
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if (nameConstraints != NULL) {
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if (state->nameConstraints == NULL) {
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state->nameConstraints = nameConstraints;
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} else {
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PKIX_CHECK(PKIX_PL_Cert_MergeNameConstraints
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(nameConstraints,
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state->nameConstraints,
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&mergedNameConstraints,
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plContext),
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PKIX_CERTMERGENAMECONSTRAINTSFAILED);
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PKIX_DECREF(nameConstraints);
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PKIX_DECREF(state->nameConstraints);
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state->nameConstraints = mergedNameConstraints;
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}
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/* Remove Name Constraints Extension OID from list */
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if (unresolvedCriticalExtensions != NULL) {
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PKIX_CHECK(pkix_List_Remove
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(unresolvedCriticalExtensions,
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(PKIX_PL_Object *)state->nameConstraintsOID,
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plContext),
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PKIX_LISTREMOVEFAILED);
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}
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}
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}
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PKIX_CHECK(PKIX_CertChainChecker_SetCertChainCheckerState
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(checker, (PKIX_PL_Object *)state, plContext),
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PKIX_CERTCHAINCHECKERSETCERTCHAINCHECKERSTATEFAILED);
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cleanup:
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PKIX_DECREF(state);
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PKIX_RETURN(CERTCHAINCHECKER);
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}
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/*
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* FUNCTION: pkix_NameConstraintsChecker_Initialize
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*
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* DESCRIPTION:
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* Create a CertChainChecker with a NameConstraintsCheckerState. The
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* NameConstraintsCheckerState is created with "trustedNC" and "numCerts"
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* as its initial state. The CertChainChecker for the NameConstraints is
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* returned at address of "pChecker".
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*
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* PARAMETERS
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* "trustedNC"
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* The NameConstraints from trusted anchor Cert is stored at "trustedNC"
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* for initialization. May be NULL.
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* "numCerts"
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* Number of certificates in the validation chain. This data is used
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* to identify end-entity.
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* "pChecker"
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* Address of CertChainChecker to bo created and returned.
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* Must be non-NULL.
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* "plContext" - Platform-specific context pointer.
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*
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* THREAD SAFETY:
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* Thread Safe (see Thread Safety Definitions in Programmer's Guide)
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*
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* RETURNS:
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* Returns NULL if the function succeeds.
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* Returns a CERTCHAINCHECKER Error if the function fails in a non-fatal way.
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* Returns a Fatal Error
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*/
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PKIX_Error *
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pkix_NameConstraintsChecker_Initialize(
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PKIX_PL_CertNameConstraints *trustedNC,
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PKIX_UInt32 numCerts,
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PKIX_CertChainChecker **pChecker,
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void *plContext)
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{
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pkix_NameConstraintsCheckerState *state = NULL;
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PKIX_ENTER(CERTCHAINCHECKER, "pkix_NameConstraintsChecker_Initialize");
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PKIX_NULLCHECK_ONE(pChecker);
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PKIX_CHECK(pkix_NameConstraintsCheckerState_Create
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(trustedNC, numCerts, &state, plContext),
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PKIX_NAMECONSTRAINTSCHECKERSTATECREATEFAILED);
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PKIX_CHECK(PKIX_CertChainChecker_Create
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(pkix_NameConstraintsChecker_Check,
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PKIX_FALSE,
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PKIX_FALSE,
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NULL,
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(PKIX_PL_Object *) state,
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pChecker,
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plContext),
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PKIX_CERTCHAINCHECKERCREATEFAILED);
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cleanup:
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PKIX_DECREF(state);
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PKIX_RETURN(CERTCHAINCHECKER);
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}
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