RetroZilla/security/nss/lib/libpkix/pkix/checker/pkix_ocspchecker.c
2015-10-20 23:03:22 -04:00

369 lines
13 KiB
C

/* ***** 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.
* Red Hat, 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_ocspchecker.c
*
* OcspChecker Object Functions
*
*/
#include "pkix_ocspchecker.h"
#include "pkix_pl_ocspcertid.h"
#include "pkix_error.h"
/* --Private-Data-and-Types--------------------------------------- */
typedef struct pkix_OcspCheckerStruct {
/* RevocationMethod is the super class of OcspChecker. */
pkix_RevocationMethod method;
PKIX_PL_VerifyCallback certVerifyFcn;
} pkix_OcspChecker;
/* --Private-Functions-------------------------------------------- */
/*
* FUNCTION: pkix_OcspChecker_Destroy
* (see comments for PKIX_PL_DestructorCallback in pkix_pl_system.h)
*/
static PKIX_Error *
pkix_OcspChecker_Destroy(
PKIX_PL_Object *object,
void *plContext)
{
return NULL;
}
/*
* FUNCTION: pkix_OcspChecker_RegisterSelf
* DESCRIPTION:
* Registers PKIX_OCSPCHECKER_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_OcspChecker_RegisterSelf(void *plContext)
{
extern pkix_ClassTable_Entry systemClasses[PKIX_NUMTYPES];
pkix_ClassTable_Entry* entry = &systemClasses[PKIX_OCSPCHECKER_TYPE];
PKIX_ENTER(OCSPCHECKER, "pkix_OcspChecker_RegisterSelf");
entry->description = "OcspChecker";
entry->typeObjectSize = sizeof(pkix_OcspChecker);
entry->destructor = pkix_OcspChecker_Destroy;
PKIX_RETURN(OCSPCHECKER);
}
/*
* FUNCTION: pkix_OcspChecker_Create
*/
PKIX_Error *
pkix_OcspChecker_Create(PKIX_RevocationMethodType methodType,
PKIX_UInt32 flags,
PKIX_UInt32 priority,
pkix_LocalRevocationCheckFn localRevChecker,
pkix_ExternalRevocationCheckFn externalRevChecker,
PKIX_PL_VerifyCallback verifyFn,
pkix_RevocationMethod **pChecker,
void *plContext)
{
pkix_OcspChecker *method = NULL;
PKIX_ENTER(OCSPCHECKER, "pkix_OcspChecker_Create");
PKIX_NULLCHECK_ONE(pChecker);
PKIX_CHECK(PKIX_PL_Object_Alloc
(PKIX_OCSPCHECKER_TYPE,
sizeof (pkix_OcspChecker),
(PKIX_PL_Object **)&method,
plContext),
PKIX_COULDNOTCREATECERTCHAINCHECKEROBJECT);
pkixErrorResult = pkix_RevocationMethod_Init(
(pkix_RevocationMethod*)method, methodType, flags, priority,
localRevChecker, externalRevChecker, plContext);
if (pkixErrorResult) {
goto cleanup;
}
method->certVerifyFcn = (PKIX_PL_VerifyCallback)verifyFn;
*pChecker = (pkix_RevocationMethod*)method;
method = NULL;
cleanup:
PKIX_DECREF(method);
PKIX_RETURN(OCSPCHECKER);
}
/* --Public-Functions--------------------------------------------- */
/*
* FUNCTION: pkix_OcspChecker_Check (see comments in pkix_checker.h)
*/
/*
* The OCSPChecker is created in an idle state, and remains in this state until
* either (a) the default Responder has been set and enabled, and a Check
* request is received with no responder specified, or (b) a Check request is
* received with a specified responder. A request message is constructed and
* given to the HttpClient. If non-blocking I/O is used the client may return
* with WOULDBLOCK, in which case the OCSPChecker returns the WOULDBLOCK
* condition to its caller in turn. On a subsequent call the I/O is resumed.
* When a response is received it is decoded and the results provided to the
* caller.
*
*/
PKIX_Error *
pkix_OcspChecker_CheckLocal(
PKIX_PL_Cert *cert,
PKIX_PL_Cert *issuer,
PKIX_PL_Date *date,
pkix_RevocationMethod *checkerObject,
PKIX_ProcessingParams *procParams,
PKIX_UInt32 methodFlags,
PKIX_Boolean chainVerificationState,
PKIX_RevocationStatus *pRevStatus,
PKIX_UInt32 *pReasonCode,
void *plContext)
{
PKIX_PL_OcspCertID *cid = NULL;
PKIX_Boolean hasFreshStatus = PKIX_FALSE;
PKIX_Boolean statusIsGood = PKIX_FALSE;
SECErrorCodes resultCode = SEC_ERROR_REVOKED_CERTIFICATE_OCSP;
PKIX_RevocationStatus revStatus = PKIX_RevStatus_NoInfo;
PKIX_ENTER(OCSPCHECKER, "pkix_OcspChecker_CheckLocal");
PKIX_CHECK(
PKIX_PL_OcspCertID_Create(cert, NULL, &cid,
plContext),
PKIX_OCSPCERTIDCREATEFAILED);
if (!cid) {
goto cleanup;
}
PKIX_CHECK(
PKIX_PL_OcspCertID_GetFreshCacheStatus(cid, NULL,
&hasFreshStatus,
&statusIsGood,
&resultCode,
plContext),
PKIX_OCSPCERTIDGETFRESHCACHESTATUSFAILED);
if (hasFreshStatus) {
if (statusIsGood) {
revStatus = PKIX_RevStatus_Success;
resultCode = 0;
} else {
revStatus = PKIX_RevStatus_Revoked;
}
}
cleanup:
*pRevStatus = revStatus;
/* ocsp carries only tree statuses: good, bad, and unknown.
* revStatus is used to pass them. reasonCode is always set
* to be unknown. */
*pReasonCode = crlEntryReasonUnspecified;
PKIX_DECREF(cid);
PKIX_RETURN(OCSPCHECKER);
}
/*
* The OCSPChecker is created in an idle state, and remains in this state until
* either (a) the default Responder has been set and enabled, and a Check
* request is received with no responder specified, or (b) a Check request is
* received with a specified responder. A request message is constructed and
* given to the HttpClient. If non-blocking I/O is used the client may return
* with WOULDBLOCK, in which case the OCSPChecker returns the WOULDBLOCK
* condition to its caller in turn. On a subsequent call the I/O is resumed.
* When a response is received it is decoded and the results provided to the
* caller.
*
*/
PKIX_Error *
pkix_OcspChecker_CheckExternal(
PKIX_PL_Cert *cert,
PKIX_PL_Cert *issuer,
PKIX_PL_Date *date,
pkix_RevocationMethod *checkerObject,
PKIX_ProcessingParams *procParams,
PKIX_UInt32 methodFlags,
PKIX_RevocationStatus *pRevStatus,
PKIX_UInt32 *pReasonCode,
void **pNBIOContext,
void *plContext)
{
SECErrorCodes resultCode = SEC_ERROR_REVOKED_CERTIFICATE_OCSP;
PKIX_Boolean uriFound = PKIX_FALSE;
PKIX_Boolean passed = PKIX_TRUE;
pkix_OcspChecker *checker = NULL;
PKIX_PL_OcspCertID *cid = NULL;
PKIX_PL_OcspRequest *request = NULL;
PKIX_PL_OcspResponse *response = NULL;
PKIX_PL_Date *validity = NULL;
PKIX_RevocationStatus revStatus = PKIX_RevStatus_NoInfo;
void *nbioContext = NULL;
PKIX_ENTER(OCSPCHECKER, "pkix_OcspChecker_Check");
PKIX_CHECK(
pkix_CheckType((PKIX_PL_Object*)checkerObject,
PKIX_OCSPCHECKER_TYPE, plContext),
PKIX_OBJECTNOTOCSPCHECKER);
checker = (pkix_OcspChecker *)checkerObject;
PKIX_CHECK(
PKIX_PL_OcspCertID_Create(cert, NULL, &cid,
plContext),
PKIX_OCSPCERTIDCREATEFAILED);
/* create request */
PKIX_CHECK(
pkix_pl_OcspRequest_Create(cert, cid, validity, NULL,
methodFlags, &uriFound, &request,
plContext),
PKIX_OCSPREQUESTCREATEFAILED);
if (uriFound == PKIX_FALSE) {
/* no caching for certs lacking URI */
resultCode = 0;
if (methodFlags & PKIX_REV_M_REQUIRE_INFO_ON_MISSING_SOURCE) {
revStatus = PKIX_RevStatus_Revoked;
}
goto cleanup;
}
/* send request and create a response object */
PKIX_CHECK(
pkix_pl_OcspResponse_Create(request, NULL,
checker->certVerifyFcn,
&nbioContext,
&response,
plContext),
PKIX_OCSPRESPONSECREATEFAILED);
if (nbioContext != 0) {
*pNBIOContext = nbioContext;
goto cleanup;
}
PKIX_CHECK(
pkix_pl_OcspResponse_Decode(response, &passed,
&resultCode, plContext),
PKIX_OCSPRESPONSEDECODEFAILED);
if (passed == PKIX_FALSE) {
goto cleanup;
}
PKIX_CHECK(
pkix_pl_OcspResponse_GetStatus(response, &passed,
&resultCode, plContext),
PKIX_OCSPRESPONSEGETSTATUSRETURNEDANERROR);
if (passed == PKIX_FALSE) {
goto cleanup;
}
PKIX_CHECK(
pkix_pl_OcspResponse_VerifySignature(response, cert,
procParams, &passed,
&nbioContext, plContext),
PKIX_OCSPRESPONSEVERIFYSIGNATUREFAILED);
if (nbioContext != 0) {
*pNBIOContext = nbioContext;
goto cleanup;
}
if (passed == PKIX_FALSE) {
goto cleanup;
}
PKIX_CHECK(
pkix_pl_OcspResponse_GetStatusForCert(cid, response,
&passed, &resultCode,
plContext),
PKIX_OCSPRESPONSEGETSTATUSFORCERTFAILED);
if (passed == PKIX_FALSE) {
revStatus = PKIX_RevStatus_Revoked;
} else {
revStatus = PKIX_RevStatus_Success;
}
cleanup:
if (revStatus == PKIX_RevStatus_NoInfo && uriFound &&
methodFlags & PKIX_REV_M_FAIL_ON_MISSING_FRESH_INFO) {
revStatus = PKIX_RevStatus_Revoked;
}
*pRevStatus = revStatus;
/* ocsp carries only tree statuses: good, bad, and unknown.
* revStatus is used to pass them. reasonCode is always set
* to be unknown. */
*pReasonCode = crlEntryReasonUnspecified;
if (!passed && cid && cid->certID) {
/* We still own the certID object, which means that
* it did not get consumed to create a cache entry.
* Let's make sure there is one.
*/
PKIX_Error *err;
err = PKIX_PL_OcspCertID_RememberOCSPProcessingFailure(
cid, plContext);
if (err) {
PKIX_PL_Object_DecRef((PKIX_PL_Object*)err, plContext);
}
}
PKIX_DECREF(cid);
PKIX_DECREF(request);
PKIX_DECREF(response);
PKIX_RETURN(OCSPCHECKER);
}