mirror of
https://github.com/rn10950/RetroZilla.git
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439 lines
14 KiB
C
439 lines
14 KiB
C
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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/*
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* pkix_defaultcrlchecker.c
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*
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* Functions for default CRL Checkers
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*
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*/
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#include "pkix.h"
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#include "pkix_crlchecker.h"
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#include "pkix_tools.h"
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/* --Private-CRLChecker-Data-and-Types------------------------------- */
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typedef struct pkix_CrlCheckerStruct {
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/* RevocationMethod is the super class of CrlChecker. */
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pkix_RevocationMethod method;
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PKIX_List *certStores; /* list of CertStore */
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PKIX_PL_VerifyCallback crlVerifyFn;
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} pkix_CrlChecker;
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/* --Private-CRLChecker-Functions----------------------------------- */
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/*
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* FUNCTION: pkix_CrlCheckerstate_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_CrlChecker_Destroy(
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PKIX_PL_Object *object,
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void *plContext)
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{
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pkix_CrlChecker *state = NULL;
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PKIX_ENTER(CRLCHECKER, "pkix_CrlChecker_Destroy");
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PKIX_NULLCHECK_ONE(object);
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/* Check that this object is a default CRL checker state */
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PKIX_CHECK(
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pkix_CheckType(object, PKIX_CRLCHECKER_TYPE, plContext),
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PKIX_OBJECTNOTCRLCHECKER);
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state = (pkix_CrlChecker *)object;
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PKIX_DECREF(state->certStores);
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cleanup:
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PKIX_RETURN(CRLCHECKER);
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}
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/*
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* FUNCTION: pkix_CrlChecker_RegisterSelf
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*
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* DESCRIPTION:
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* Registers PKIX_CRLCHECKER_TYPE and its related functions
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* with systemClasses[]
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*
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* THREAD SAFETY:
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* Not Thread Safe (see Thread Safety Definitions in Programmer's Guide)
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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_CrlChecker_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 = &systemClasses[PKIX_CRLCHECKER_TYPE];
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PKIX_ENTER(CRLCHECKER, "pkix_CrlChecker_RegisterSelf");
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entry->description = "CRLChecker";
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entry->typeObjectSize = sizeof(pkix_CrlChecker);
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entry->destructor = pkix_CrlChecker_Destroy;
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PKIX_RETURN(CRLCHECKER);
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}
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/*
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* FUNCTION: pkix_CrlChecker_Create
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*
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* DESCRIPTION:
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* Allocate and initialize CRLChecker state data.
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*
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* PARAMETERS
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* "certStores"
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* Address of CertStore List to be stored in state. Must be non-NULL.
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* "testDate"
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* Address of PKIX_PL_Date to be checked. May be NULL.
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* "trustedPubKey"
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* Trusted Anchor Public Key for verifying first Cert in the chain.
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* Must be non-NULL.
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* "certsRemaining"
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* Number of certificates remaining in the chain.
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* "nistCRLPolicyEnabled"
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* If enabled, enforce nist crl policy.
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* "pChecker"
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* Address of CRLChecker that is returned. Must be non-NULL.
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* "plContext"
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* 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 DefaultCrlChecker Error if the function fails in a
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* 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_CrlChecker_Create(PKIX_RevocationMethodType methodType,
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PKIX_UInt32 flags,
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PKIX_UInt32 priority,
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pkix_LocalRevocationCheckFn localRevChecker,
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pkix_ExternalRevocationCheckFn externalRevChecker,
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PKIX_List *certStores,
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PKIX_PL_VerifyCallback crlVerifyFn,
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pkix_RevocationMethod **pChecker,
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void *plContext)
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{
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pkix_CrlChecker *crlChecker = NULL;
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PKIX_ENTER(CRLCHECKER, "pkix_CrlChecker_Create");
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PKIX_NULLCHECK_TWO(certStores, pChecker);
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PKIX_CHECK(PKIX_PL_Object_Alloc
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(PKIX_CRLCHECKER_TYPE,
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sizeof (pkix_CrlChecker),
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(PKIX_PL_Object **)&crlChecker,
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plContext),
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PKIX_COULDNOTCREATECRLCHECKEROBJECT);
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pkixErrorResult = pkix_RevocationMethod_Init(
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(pkix_RevocationMethod*)crlChecker, methodType, flags, priority,
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localRevChecker, externalRevChecker, plContext);
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if (pkixErrorResult) {
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goto cleanup;
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}
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/* Initialize fields */
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PKIX_INCREF(certStores);
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crlChecker->certStores = certStores;
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crlChecker->crlVerifyFn = crlVerifyFn;
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*pChecker = (pkix_RevocationMethod*)crlChecker;
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crlChecker = NULL;
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cleanup:
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PKIX_DECREF(crlChecker);
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PKIX_RETURN(CRLCHECKER);
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}
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/* --Private-CRLChecker-Functions------------------------------------ */
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/*
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* FUNCTION: pkix_CrlChecker_CheckLocal
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*
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* DESCRIPTION:
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* Check if the Cert has been revoked based the CRLs data. This function
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* maintains the checker state to be current.
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*
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* PARAMETERS
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* "checker"
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* Address of CertChainChecker which has the state data.
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* Must be non-NULL.
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* "cert"
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* Address of Certificate that is to be validated. Must be non-NULL.
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* "unreslvdCrtExts"
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* A List OIDs. Not **yet** used in this checker function.
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* "plContext"
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* Platform-specific context pointer.
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*
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* THREAD SAFETY:
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* Not Thread Safe
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* (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_CrlChecker_CheckLocal(
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PKIX_PL_Cert *cert,
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PKIX_PL_Cert *issuer,
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PKIX_PL_Date *date,
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pkix_RevocationMethod *checkerObject,
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PKIX_ProcessingParams *procParams,
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PKIX_UInt32 methodFlags,
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PKIX_Boolean chainVerificationState,
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PKIX_RevocationStatus *pRevStatus,
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PKIX_UInt32 *pReasonCode,
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void *plContext)
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{
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PKIX_CertStore_CheckRevokationByCrlCallback storeCheckRevocationFn;
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PKIX_CertStore *certStore = NULL;
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pkix_CrlChecker *state = NULL;
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PKIX_UInt32 crlStoreIndex = 0;
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PKIX_UInt32 numCrlStores = 0;
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PKIX_Boolean storeIsLocal = PKIX_FALSE;
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PKIX_RevocationStatus revStatus = PKIX_RevStatus_NoInfo;
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PKIX_ENTER(CERTCHAINCHECKER, "pkix_CrlChecker_CheckLocal");
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PKIX_NULLCHECK_FOUR(cert, issuer, checkerObject, checkerObject);
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state = (pkix_CrlChecker*)checkerObject;
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PKIX_CHECK(
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PKIX_List_GetLength(state->certStores, &numCrlStores, plContext),
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PKIX_LISTGETLENGTHFAILED);
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for (;crlStoreIndex < numCrlStores;crlStoreIndex++) {
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PKIX_CHECK(
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PKIX_List_GetItem(state->certStores, crlStoreIndex,
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(PKIX_PL_Object **)&certStore,
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plContext),
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PKIX_LISTGETITEMFAILED);
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PKIX_CHECK(
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PKIX_CertStore_GetLocalFlag(certStore, &storeIsLocal,
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plContext),
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PKIX_CERTSTOREGETLOCALFLAGFAILED);
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if (storeIsLocal) {
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PKIX_CHECK(
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PKIX_CertStore_GetCrlCheckerFn(certStore,
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&storeCheckRevocationFn,
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plContext),
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PKIX_CERTSTOREGETCHECKREVBYCRLFAILED);
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if (storeCheckRevocationFn) {
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PKIX_CHECK(
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(*storeCheckRevocationFn)(certStore, cert, issuer,
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/* delay sig check if building
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* a chain by not specifying the time*/
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chainVerificationState ? date : NULL,
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/* crl downloading is not done. */
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PKIX_FALSE,
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pReasonCode, &revStatus, plContext),
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PKIX_CERTSTORECRLCHECKFAILED);
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if (revStatus == PKIX_RevStatus_Revoked) {
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break;
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}
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}
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}
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PKIX_DECREF(certStore);
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} /* while */
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cleanup:
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*pRevStatus = revStatus;
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PKIX_DECREF(certStore);
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PKIX_RETURN(CERTCHAINCHECKER);
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}
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/*
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* FUNCTION: pkix_CrlChecker_CheckRemote
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*
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* DESCRIPTION:
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* Check if the Cert has been revoked based the CRLs data. This function
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* maintains the checker state to be current.
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*
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* PARAMETERS
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* "checker"
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* Address of CertChainChecker which has the state data.
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* Must be non-NULL.
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* "cert"
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* Address of Certificate that is to be validated. Must be non-NULL.
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* "unreslvdCrtExts"
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* A List OIDs. Not **yet** used in this checker function.
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* "plContext"
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* Platform-specific context pointer.
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*
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* THREAD SAFETY:
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* Not Thread Safe
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* (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_CrlChecker_CheckExternal(
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PKIX_PL_Cert *cert,
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PKIX_PL_Cert *issuer,
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PKIX_PL_Date *date,
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pkix_RevocationMethod *checkerObject,
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PKIX_ProcessingParams *procParams,
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PKIX_UInt32 methodFlags,
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PKIX_RevocationStatus *pRevStatus,
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PKIX_UInt32 *pReasonCode,
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void **pNBIOContext,
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void *plContext)
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{
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PKIX_CertStore_CheckRevokationByCrlCallback storeCheckRevocationFn = NULL;
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PKIX_CertStore_ImportCrlCallback storeImportCrlFn = NULL;
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PKIX_RevocationStatus revStatus = PKIX_RevStatus_NoInfo;
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PKIX_CertStore *certStore = NULL;
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PKIX_CertStore *localStore = NULL;
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PKIX_CRLSelector *crlSelector = NULL;
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PKIX_PL_X500Name *issuerName = NULL;
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pkix_CrlChecker *state = NULL;
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PKIX_UInt32 crlStoreIndex = 0;
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PKIX_UInt32 numCrlStores = 0;
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PKIX_Boolean storeIsLocal = PKIX_FALSE;
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PKIX_List *crlList = NULL;
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PKIX_List *dpList = NULL;
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void *nbioContext = NULL;
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PKIX_ENTER(CERTCHAINCHECKER, "pkix_CrlChecker_CheckExternal");
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PKIX_NULLCHECK_FOUR(cert, issuer, checkerObject, pNBIOContext);
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nbioContext = *pNBIOContext;
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*pNBIOContext = NULL; /* prepare for Error exit */
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state = (pkix_CrlChecker*)checkerObject;
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PKIX_CHECK(
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PKIX_List_GetLength(state->certStores, &numCrlStores, plContext),
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PKIX_LISTGETLENGTHFAILED);
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/* Find a cert store that is capable of storing crls */
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for (;crlStoreIndex < numCrlStores;crlStoreIndex++) {
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PKIX_CHECK(
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PKIX_List_GetItem(state->certStores, crlStoreIndex,
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(PKIX_PL_Object **)&certStore,
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plContext),
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PKIX_LISTGETITEMFAILED);
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PKIX_CHECK(
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PKIX_CertStore_GetLocalFlag(certStore, &storeIsLocal,
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plContext),
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PKIX_CERTSTOREGETLOCALFLAGFAILED);
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if (storeIsLocal) {
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PKIX_CHECK(
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PKIX_CertStore_GetImportCrlCallback(certStore,
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&storeImportCrlFn,
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plContext),
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PKIX_CERTSTOREGETCHECKREVBYCRLFAILED);
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PKIX_CHECK(
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PKIX_CertStore_GetCrlCheckerFn(certStore,
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&storeCheckRevocationFn,
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plContext),
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PKIX_CERTSTOREGETCHECKREVBYCRLFAILED);
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if (storeImportCrlFn && storeCheckRevocationFn) {
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localStore = certStore;
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certStore = NULL;
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break;
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}
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}
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PKIX_DECREF(certStore);
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} /* while */
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/* Report unknown status if we can not check crl in one of the
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* local stores. */
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if (!localStore) {
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PKIX_ERROR_FATAL(PKIX_CRLCHECKERNOLOCALCERTSTOREFOUND);
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}
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PKIX_CHECK(
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PKIX_PL_Cert_VerifyKeyUsage(issuer, PKIX_CRL_SIGN, plContext),
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PKIX_CERTCHECKKEYUSAGEFAILED);
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PKIX_CHECK(
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PKIX_PL_Cert_GetCrlDp(cert, &dpList, plContext),
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PKIX_CERTGETCRLDPFAILED);
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if (!(methodFlags & PKIX_REV_M_REQUIRE_INFO_ON_MISSING_SOURCE) &&
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(!dpList || !dpList->length)) {
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goto cleanup;
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}
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PKIX_CHECK(
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PKIX_PL_Cert_GetIssuer(cert, &issuerName, plContext),
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PKIX_CERTGETISSUERFAILED);
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PKIX_CHECK(
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PKIX_CRLSelector_Create(issuer, dpList, date, &crlSelector, plContext),
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PKIX_CRLCHECKERSETSELECTORFAILED);
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/* Fetch crl and store in a local cert store */
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for (crlStoreIndex = 0;crlStoreIndex < numCrlStores;crlStoreIndex++) {
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PKIX_CertStore_CRLCallback getCrlsFn;
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PKIX_CHECK(
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PKIX_List_GetItem(state->certStores, crlStoreIndex,
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(PKIX_PL_Object **)&certStore,
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plContext),
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PKIX_LISTGETITEMFAILED);
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PKIX_CHECK(
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PKIX_CertStore_GetCRLCallback(certStore, &getCrlsFn,
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plContext),
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PKIX_CERTSTOREGETCRLCALLBACKFAILED);
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PKIX_CHECK(
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(*getCrlsFn)(certStore, crlSelector, &nbioContext,
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&crlList, plContext),
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PKIX_GETCRLSFAILED);
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PKIX_CHECK(
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(*storeImportCrlFn)(localStore, issuerName, crlList, plContext),
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PKIX_CERTSTOREFAILTOIMPORTCRLLIST);
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PKIX_CHECK(
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(*storeCheckRevocationFn)(certStore, cert, issuer, date,
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/* done with crl downloading */
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PKIX_TRUE,
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pReasonCode, &revStatus, plContext),
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PKIX_CERTSTORECRLCHECKFAILED);
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if (revStatus != PKIX_RevStatus_NoInfo) {
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break;
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}
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PKIX_DECREF(crlList);
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PKIX_DECREF(certStore);
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} /* while */
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cleanup:
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/* Update return flags */
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if (revStatus == PKIX_RevStatus_NoInfo &&
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((dpList && dpList->length > 0) ||
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(methodFlags & PKIX_REV_M_REQUIRE_INFO_ON_MISSING_SOURCE)) &&
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methodFlags & PKIX_REV_M_FAIL_ON_MISSING_FRESH_INFO) {
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revStatus = PKIX_RevStatus_Revoked;
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}
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*pRevStatus = revStatus;
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PKIX_DECREF(dpList);
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PKIX_DECREF(crlList);
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PKIX_DECREF(certStore);
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PKIX_DECREF(issuerName);
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PKIX_DECREF(localStore);
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PKIX_DECREF(crlSelector);
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PKIX_RETURN(CERTCHAINCHECKER);
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}
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