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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/*
* pkix_namechainingchecker.c
*
* Functions for name chaining validation
*
*/
#include "pkix_namechainingchecker.h"
/* --Private-Functions-------------------------------------------- */
/*
* FUNCTION: pkix_NameChainingChecker_Check
* (see comments for PKIX_CertChainChecker_CheckCallback in pkix_checker.h)
*/
PKIX_Error *
pkix_NameChainingChecker_Check(
PKIX_CertChainChecker *checker,
PKIX_PL_Cert *cert,
PKIX_List *unresolvedCriticalExtensions,
void **pNBIOContext,
void *plContext)
{
PKIX_PL_X500Name *prevSubject = NULL;
PKIX_PL_X500Name *currIssuer = NULL;
PKIX_PL_X500Name *currSubject = NULL;
PKIX_Boolean result;
PKIX_ENTER(CERTCHAINCHECKER, "pkix_NameChainingChecker_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 **)&prevSubject, plContext),
PKIX_CERTCHAINCHECKERGETCERTCHAINCHECKERSTATEFAILED);
PKIX_CHECK(PKIX_PL_Cert_GetIssuer(cert, &currIssuer, plContext),
PKIX_CERTGETISSUERFAILED);
if (prevSubject){
PKIX_CHECK(PKIX_PL_X500Name_Match
(prevSubject, currIssuer, &result, plContext),
PKIX_X500NAMEMATCHFAILED);
if (!result){
PKIX_ERROR(PKIX_NAMECHAININGCHECKFAILED);
}
} else {
PKIX_ERROR(PKIX_NAMECHAININGCHECKFAILED);
}
PKIX_CHECK(PKIX_PL_Cert_GetSubject(cert, &currSubject, plContext),
PKIX_CERTGETSUBJECTFAILED);
PKIX_CHECK(PKIX_CertChainChecker_SetCertChainCheckerState
(checker, (PKIX_PL_Object *)currSubject, plContext),
PKIX_CERTCHAINCHECKERSETCERTCHAINCHECKERSTATEFAILED);
cleanup:
PKIX_DECREF(prevSubject);
PKIX_DECREF(currIssuer);
PKIX_DECREF(currSubject);
PKIX_RETURN(CERTCHAINCHECKER);
}
/*
* FUNCTION: pkix_NameChainingChecker_Initialize
* DESCRIPTION:
*
* Creates a new CertChainChecker and stores it at "pChecker", where it will
* be used by pkix_NameChainingChecker_Check to check that the issuer name
* of the certificate matches the subject name in the checker's state. The
* X500Name pointed to by "trustedCAName" is used to initialize the checker's
* state.
*
* PARAMETERS:
* "trustedCAName"
* Address of X500Name representing the trusted CA Name used to
* initialize the state of this checker. Must be non-NULL.
* "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_NameChainingChecker_Initialize(
PKIX_PL_X500Name *trustedCAName,
PKIX_CertChainChecker **pChecker,
void *plContext)
{
PKIX_ENTER(CERTCHAINCHECKER, "PKIX_NameChainingChecker_Initialize");
PKIX_NULLCHECK_TWO(pChecker, trustedCAName);
PKIX_CHECK(PKIX_CertChainChecker_Create
(pkix_NameChainingChecker_Check,
PKIX_FALSE,
PKIX_FALSE,
NULL,
(PKIX_PL_Object *)trustedCAName,
pChecker,
plContext),
PKIX_CERTCHAINCHECKERCREATEFAILED);
cleanup:
PKIX_RETURN(CERTCHAINCHECKER);
}
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