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https://github.com/rn10950/RetroZilla.git
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329 lines
10 KiB
C
329 lines
10 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_ekuchecker.c
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*
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* User Defined ExtenedKeyUsage Function Definitions
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*
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*/
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#include "pkix_ekuchecker.h"
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SECOidTag ekuOidStrings[] = {
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PKIX_KEY_USAGE_SERVER_AUTH_OID,
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PKIX_KEY_USAGE_CLIENT_AUTH_OID,
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PKIX_KEY_USAGE_CODE_SIGN_OID,
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PKIX_KEY_USAGE_EMAIL_PROTECT_OID,
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PKIX_KEY_USAGE_TIME_STAMP_OID,
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PKIX_KEY_USAGE_OCSP_RESPONDER_OID,
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PKIX_UNKNOWN_OID
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};
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typedef struct pkix_EkuCheckerStruct {
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PKIX_List *requiredExtKeyUsageOids;
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PKIX_PL_OID *ekuOID;
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} pkix_EkuChecker;
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/*
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* FUNCTION: pkix_EkuChecker_Destroy
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* (see comments for PKIX_DestructorCallback in pkix_pl_system.h)
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*/
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static PKIX_Error *
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pkix_EkuChecker_Destroy(
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PKIX_PL_Object *object,
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void *plContext)
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{
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pkix_EkuChecker *ekuCheckerState = NULL;
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PKIX_ENTER(EKUCHECKER, "pkix_EkuChecker_Destroy");
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PKIX_NULLCHECK_ONE(object);
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PKIX_CHECK(pkix_CheckType(object, PKIX_EKUCHECKER_TYPE, plContext),
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PKIX_OBJECTNOTANEKUCHECKERSTATE);
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ekuCheckerState = (pkix_EkuChecker *)object;
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PKIX_DECREF(ekuCheckerState->ekuOID);
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PKIX_DECREF(ekuCheckerState->requiredExtKeyUsageOids);
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cleanup:
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PKIX_RETURN(EKUCHECKER);
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}
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/*
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* FUNCTION: pkix_EkuChecker_RegisterSelf
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*
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* DESCRIPTION:
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* Registers PKIX_PL_HTTPCERTSTORECONTEXT_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_EkuChecker_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_EKUCHECKER_TYPE];
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PKIX_ENTER(EKUCHECKER, "pkix_EkuChecker_RegisterSelf");
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entry->description = "EkuChecker";
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entry->typeObjectSize = sizeof(pkix_EkuChecker);
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entry->destructor = pkix_EkuChecker_Destroy;
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PKIX_RETURN(EKUCHECKER);
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}
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/*
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* FUNCTION: pkix_EkuChecker_Create
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* DESCRIPTION:
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*
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* Creates a new Extend Key Usage CheckerState using "params" to retrieve
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* application specified EKU for verification and stores it at "pState".
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*
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* PARAMETERS:
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* "params"
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* a PKIX_ProcessingParams links to PKIX_ComCertSelParams where a list of
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* Extended Key Usage OIDs specified by application can be retrieved for
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* verification.
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* "pState"
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* Address where state pointer will be stored. Must be non-NULL.
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* "plContext"
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* Platform-specific context pointer.
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* THREAD SAFETY:
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* Thread Safe (see Thread Safety Definitions in Programmer's Guide)
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* RETURNS:
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* Returns NULL if the function succeeds.
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* Returns a UserDefinedModules Error if the function fails in a
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* non-fatal way.
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* Returns a Fatal Error if the function fails in an unrecoverable way.
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*/
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static PKIX_Error *
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pkix_EkuChecker_Create(
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PKIX_ProcessingParams *params,
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pkix_EkuChecker **pState,
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void *plContext)
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{
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pkix_EkuChecker *state = NULL;
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PKIX_CertSelector *certSelector = NULL;
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PKIX_ComCertSelParams *comCertSelParams = NULL;
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PKIX_List *requiredOids = NULL;
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PKIX_ENTER(EKUCHECKER, "pkix_EkuChecker_Create");
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PKIX_NULLCHECK_TWO(params, pState);
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PKIX_CHECK(PKIX_PL_Object_Alloc
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(PKIX_EKUCHECKER_TYPE,
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sizeof (pkix_EkuChecker),
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(PKIX_PL_Object **)&state,
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plContext),
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PKIX_COULDNOTCREATEEKUCHECKERSTATEOBJECT);
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PKIX_CHECK(PKIX_ProcessingParams_GetTargetCertConstraints
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(params, &certSelector, plContext),
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PKIX_PROCESSINGPARAMSGETTARGETCERTCONSTRAINTSFAILED);
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if (certSelector != NULL) {
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/* Get initial EKU OIDs from ComCertSelParams, if set */
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PKIX_CHECK(PKIX_CertSelector_GetCommonCertSelectorParams
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(certSelector, &comCertSelParams, plContext),
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PKIX_CERTSELECTORGETCOMMONCERTSELECTORPARAMSFAILED);
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if (comCertSelParams != NULL) {
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PKIX_CHECK(PKIX_ComCertSelParams_GetExtendedKeyUsage
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(comCertSelParams, &requiredOids, plContext),
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PKIX_COMCERTSELPARAMSGETEXTENDEDKEYUSAGEFAILED);
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}
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}
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PKIX_CHECK(PKIX_PL_OID_Create
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(PKIX_EXTENDEDKEYUSAGE_OID,
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&state->ekuOID,
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plContext),
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PKIX_OIDCREATEFAILED);
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state->requiredExtKeyUsageOids = requiredOids;
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requiredOids = NULL;
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*pState = state;
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state = NULL;
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cleanup:
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PKIX_DECREF(certSelector);
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PKIX_DECREF(comCertSelParams);
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PKIX_DECREF(requiredOids);
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PKIX_DECREF(state);
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PKIX_RETURN(EKUCHECKER);
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}
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/*
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* FUNCTION: pkix_EkuChecker_Check
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* DESCRIPTION:
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*
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* This function determines the Extended Key Usage OIDs specified by the
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* application is included in the Extended Key Usage OIDs of this "cert".
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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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* "unresolvedCriticalExtensions"
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* A List OIDs. The OID for Extended Key Usage is removed.
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* "plContext"
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* Platform-specific context pointer.
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* THREAD SAFETY:
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* Thread Safe (see Thread Safety Definitions in Programmer's Guide)
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* RETURNS:
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* Returns NULL if the function succeeds.
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* Returns a UserDefinedModules Error if the function fails in
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* a non-fatal way.
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* Returns a Fatal Error if the function fails in an unrecoverable way.
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*/
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static PKIX_Error *
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pkix_EkuChecker_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_EkuChecker *state = NULL;
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PKIX_List *requiredExtKeyUsageList = NULL;
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PKIX_List *certExtKeyUsageList = NULL;
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PKIX_PL_OID *ekuOid = NULL;
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PKIX_Boolean isContained = PKIX_FALSE;
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PKIX_UInt32 numItems = 0;
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PKIX_UInt32 i;
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PKIX_Boolean checkResult = PKIX_TRUE;
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PKIX_ENTER(EKUCHECKER, "pkix_EkuChecker_Check");
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PKIX_NULLCHECK_THREE(checker, cert, pNBIOContext);
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*pNBIOContext = NULL; /* no non-blocking IO */
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PKIX_CHECK(
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PKIX_CertChainChecker_GetCertChainCheckerState
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(checker, (PKIX_PL_Object **)&state, plContext),
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PKIX_CERTCHAINCHECKERGETCERTCHAINCHECKERSTATEFAILED);
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requiredExtKeyUsageList = state->requiredExtKeyUsageOids;
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if (requiredExtKeyUsageList == NULL) {
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goto cleanup;
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}
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PKIX_CHECK(
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PKIX_List_GetLength(requiredExtKeyUsageList, &numItems,
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plContext),
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PKIX_LISTGETLENGTHFAILED);
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if (numItems == 0) {
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goto cleanup;
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}
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PKIX_CHECK(
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PKIX_PL_Cert_GetExtendedKeyUsage(cert, &certExtKeyUsageList,
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plContext),
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PKIX_CERTGETEXTENDEDKEYUSAGEFAILED);
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if (certExtKeyUsageList == NULL) {
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goto cleanup;
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}
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for (i = 0; i < numItems; i++) {
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PKIX_CHECK(
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PKIX_List_GetItem(requiredExtKeyUsageList, i,
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(PKIX_PL_Object **)&ekuOid, plContext),
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PKIX_LISTGETITEMFAILED);
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PKIX_CHECK(
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pkix_List_Contains(certExtKeyUsageList,
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(PKIX_PL_Object *)ekuOid,
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&isContained,
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plContext),
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PKIX_LISTCONTAINSFAILED);
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PKIX_DECREF(ekuOid);
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if (isContained != PKIX_TRUE) {
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checkResult = PKIX_FALSE;
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goto cleanup;
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}
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}
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cleanup:
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if (!pkixErrorResult && checkResult == PKIX_FALSE) {
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pkixErrorReceived = PKIX_TRUE;
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pkixErrorCode = PKIX_EXTENDEDKEYUSAGECHECKINGFAILED;
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}
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PKIX_DECREF(ekuOid);
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PKIX_DECREF(certExtKeyUsageList);
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PKIX_DECREF(state);
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PKIX_RETURN(EKUCHECKER);
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}
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/*
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* FUNCTION: pkix_EkuChecker_Initialize
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* (see comments in pkix_sample_modules.h)
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*/
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PKIX_Error *
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PKIX_EkuChecker_Create(
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PKIX_ProcessingParams *params,
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PKIX_CertChainChecker **pEkuChecker,
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void *plContext)
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{
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pkix_EkuChecker *state = NULL;
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PKIX_List *critExtOIDsList = NULL;
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PKIX_ENTER(EKUCHECKER, "PKIX_EkuChecker_Initialize");
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PKIX_NULLCHECK_ONE(params);
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/*
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* This function and functions in this file provide an example of how
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* an application defined checker can be hooked into libpkix.
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*/
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PKIX_CHECK(pkix_EkuChecker_Create
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(params, &state, plContext),
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PKIX_EKUCHECKERSTATECREATEFAILED);
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PKIX_CHECK(PKIX_List_Create(&critExtOIDsList, plContext),
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PKIX_LISTCREATEFAILED);
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PKIX_CHECK(PKIX_List_AppendItem
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(critExtOIDsList,
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(PKIX_PL_Object *)state->ekuOID,
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plContext),
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PKIX_LISTAPPENDITEMFAILED);
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PKIX_CHECK(PKIX_CertChainChecker_Create
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(pkix_EkuChecker_Check,
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PKIX_TRUE, /* forwardCheckingSupported */
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PKIX_FALSE, /* forwardDirectionExpected */
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critExtOIDsList,
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(PKIX_PL_Object *) state,
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pEkuChecker,
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plContext),
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PKIX_CERTCHAINCHECKERCREATEFAILED);
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cleanup:
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PKIX_DECREF(critExtOIDsList);
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PKIX_DECREF(state);
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PKIX_RETURN(EKUCHECKER);
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}
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