nsresult
nsNSSCertificate::hasValidEVOidTag(SECOidTag &resultOidTag, PRBool &validEV)
{
nsNSSShutDownPreventionLock locker;
if (isAlreadyShutDown())
return NS_ERROR_NOT_AVAILABLE;
nsresult nrv;
nsCOMPtr<nsINSSComponent> nssComponent =
do_GetService(PSM_COMPONENT_CONTRACTID, &nrv);
if (NS_FAILED(nrv))
return nrv;
nssComponent->EnsureIdentityInfoLoaded();
validEV = PR_FALSE;
resultOidTag = SEC_OID_UNKNOWN;
PRBool isOCSPEnabled = PR_FALSE;
nsCOMPtr<nsIX509CertDB> certdb;
certdb = do_GetService(NS_X509CERTDB_CONTRACTID);
if (certdb)
certdb->GetIsOcspOn(&isOCSPEnabled);
// No OCSP, no EV
if (!isOCSPEnabled)
return NS_OK;
SECOidTag oid_tag;
SECStatus rv = getFirstEVPolicy(mCert, oid_tag);
if (rv != SECSuccess)
return NS_OK;
if (oid_tag == SEC_OID_UNKNOWN) // not in our list of OIDs accepted for EV
return NS_OK;
CERTCertList *rootList = getRootsForOid(oid_tag);
CERTCertListCleaner rootListCleaner();
CERTRevocationMethodIndex preferedRevMethods[1] = {
cert_revocation_method_ocsp
};
PRUint64 revMethodFlags =
CERT_REV_M_TEST_USING_THIS_METHOD
| CERT_REV_M_ALLOW_NETWORK_FETCHING
| CERT_REV_M_ALLOW_IMPLICIT_DEFAULT_SOURCE
| CERT_REV_M_REQUIRE_INFO_ON_MISSING_SOURCE
| CERT_REV_M_STOP_TESTING_ON_FRESH_INFO;
PRUint64 revMethodIndependentFlags =
CERT_REV_MI_TEST_ALL_LOCAL_INFORMATION_FIRST
| CERT_REV_MI_REQUIRE_SOME_FRESH_INFO_AVAILABLE;
PRUint64 methodFlags[2];
methodFlags[cert_revocation_method_crl] = revMethodFlags;
methodFlags[cert_revocation_method_ocsp] = revMethodFlags;
CERTRevocationFlags rev;
rev.leafTests.number_of_defined_methods = cert_revocation_method_ocsp +1;
rev.leafTests.cert_rev_flags_per_method = methodFlags;
rev.leafTests.number_of_preferred_methods = 1;
rev.leafTests.preferred_methods = preferedRevMethods;
rev.leafTests.cert_rev_method_independent_flags =
revMethodIndependentFlags;
rev.chainTests.number_of_defined_methods = cert_revocation_method_ocsp +1;
rev.chainTests.cert_rev_flags_per_method = methodFlags;
rev.chainTests.number_of_preferred_methods = 1;
rev.chainTests.preferred_methods = preferedRevMethods;
rev.chainTests.cert_rev_method_independent_flags =
revMethodIndependentFlags;
CERTValInParam cvin[3];
cvin[0].type = cert_pi_policyOID;
cvin[0].value.arraySize = 1;
cvin[0].value.array.oids = &oid_tag;
cvin[1].type = cert_pi_revocationFlags;
cvin[1].value.pointer.revocation = &rev;
cvin[2].type = cert_pi_trustAnchors;
cvin[2].value.pointer.chain = rootList;
cvin[3].type = cert_pi_end;
CERTValOutParam cvout[2];
cvout[0].type = cert_po_trustAnchor;
cvout[0].value.pointer.cert = nsnull;
cvout[1].type = cert_po_end;
PR_LOG(gPIPNSSLog, PR_LOG_DEBUG, ("calling CERT_PKIXVerifyCert nss cert %p\n", mCert));
rv = CERT_PKIXVerifyCert(mCert, certificateUsageSSLServer,
cvin, cvout, nsnull);
if (rv != SECSuccess)
return NS_OK;
CERTCertificate *issuerCert = cvout[0].value.pointer.cert;
CERTCertificateCleaner issuerCleaner(issuerCert);
#ifdef PR_LOGGING
if (PR_LOG_TEST(gPIPNSSLog, PR_LOG_DEBUG)) {
nsNSSCertificate ic(issuerCert);
nsAutoString fingerprint;
ic.GetSha1Fingerprint(fingerprint);
NS_LossyConvertUTF16toASCII fpa(fingerprint);
PR_LOG(gPIPNSSLog, PR_LOG_DEBUG, ("CERT_PKIXVerifyCert returned success, issuer: %s, SHA1: %s\n",
issuerCert->subjectName, fpa.get()));
}
#endif
validEV = isApprovedForEV(oid_tag, issuerCert);
if (validEV)
resultOidTag = oid_tag;
return NS_OK;
}
SECStatus
CertVerifier::VerifyCert(CERTCertificate * cert,
const SECCertificateUsage usage,
const PRTime time,
nsIInterfaceRequestor * pinArg,
const Flags flags,
/*optional out*/ CERTCertList **validationChain,
/*optional out*/ SECOidTag *evOidPolicy,
/*optional out*/ CERTVerifyLog *verifyLog)
{
if (!cert) {
PORT_SetError(SEC_ERROR_INVALID_ARGS);
return SECFailure;
}
if (validationChain) {
*validationChain = nullptr;
}
if (evOidPolicy) {
*evOidPolicy = SEC_OID_UNKNOWN;
}
switch(usage){
case certificateUsageSSLClient:
case certificateUsageSSLServer:
case certificateUsageSSLCA:
case certificateUsageEmailSigner:
case certificateUsageEmailRecipient:
case certificateUsageObjectSigner:
case certificateUsageStatusResponder:
break;
default:
NS_WARNING("Calling VerifyCert with invalid usage");
PORT_SetError(SEC_ERROR_INVALID_ARGS);
return SECFailure;
}
ScopedCERTCertList trustAnchors;
SECStatus rv;
SECOidTag evPolicy = SEC_OID_UNKNOWN;
#ifdef NSS_NO_LIBPKIX
return ClassicVerifyCert(cert, usage, time, pinArg, validationChain,
verifyLog);
#else
// Do EV checking only for sslserver usage
if (usage == certificateUsageSSLServer) {
SECStatus srv = getFirstEVPolicy(cert, evPolicy);
if (srv == SECSuccess) {
if (evPolicy != SEC_OID_UNKNOWN) {
trustAnchors = getRootsForOid(evPolicy);
}
if (!trustAnchors) {
return SECFailure;
}
// pkix ignores an empty trustanchors list and
// decides then to use the whole set of trust in the DB
// so we set the evPolicy to unkown in this case
if (CERT_LIST_EMPTY(trustAnchors)) {
evPolicy = SEC_OID_UNKNOWN;
}
} else {
// Do not setup EV verification params
evPolicy = SEC_OID_UNKNOWN;
}
}
MOZ_ASSERT_IF(evPolicy != SEC_OID_UNKNOWN, trustAnchors);
size_t i = 0;
size_t validationChainLocation = 0;
size_t validationTrustAnchorLocation = 0;
CERTValOutParam cvout[4];
if (verifyLog) {
cvout[i].type = cert_po_errorLog;
cvout[i].value.pointer.log = verifyLog;
++i;
}
if (validationChain) {
PR_LOG(gPIPNSSLog, PR_LOG_DEBUG, ("VerifyCert: setting up validation chain outparam.\n"));
validationChainLocation = i;
cvout[i].type = cert_po_certList;
cvout[i].value.pointer.cert = nullptr;
++i;
validationTrustAnchorLocation = i;
cvout[i].type = cert_po_trustAnchor;
cvout[i].value.pointer.chain = nullptr;
++i;
}
cvout[i].type = cert_po_end;
CERTRevocationFlags rev;
CERTRevocationMethodIndex revPreferredMethods[2];
rev.leafTests.preferred_methods =
rev.chainTests.preferred_methods = revPreferredMethods;
uint64_t revFlagsPerMethod[2];
rev.leafTests.cert_rev_flags_per_method =
rev.chainTests.cert_rev_flags_per_method = revFlagsPerMethod;
rev.leafTests.number_of_preferred_methods =
rev.chainTests.number_of_preferred_methods = 1;
rev.leafTests.number_of_defined_methods =
rev.chainTests.number_of_defined_methods = cert_revocation_method_ocsp + 1;
const bool localOnly = flags & FLAG_LOCAL_ONLY;
CERTValInParam cvin[6];
// Parameters for both EV and DV validation
cvin[0].type = cert_pi_useAIACertFetch;
cvin[0].value.scalar.b = mMissingCertDownloadEnabled && !localOnly;
cvin[1].type = cert_pi_revocationFlags;
cvin[1].value.pointer.revocation = &rev;
cvin[2].type = cert_pi_date;
cvin[2].value.scalar.time = time;
i = 3;
const size_t evParamLocation = i;
if (evPolicy != SEC_OID_UNKNOWN) {
// EV setup!
// XXX 859872 The current flags are not quite correct. (use
// of ocsp flags for crl preferences).
uint64_t ocspRevMethodFlags =
CERT_REV_M_TEST_USING_THIS_METHOD
| ((mOCSPDownloadEnabled && !localOnly) ?
CERT_REV_M_ALLOW_NETWORK_FETCHING : CERT_REV_M_FORBID_NETWORK_FETCHING)
| CERT_REV_M_ALLOW_IMPLICIT_DEFAULT_SOURCE
| CERT_REV_M_REQUIRE_INFO_ON_MISSING_SOURCE
| CERT_REV_M_IGNORE_MISSING_FRESH_INFO
| CERT_REV_M_STOP_TESTING_ON_FRESH_INFO
| (mOCSPGETEnabled ? 0 : CERT_REV_M_FORCE_POST_METHOD_FOR_OCSP);
rev.leafTests.cert_rev_flags_per_method[cert_revocation_method_crl] =
rev.chainTests.cert_rev_flags_per_method[cert_revocation_method_crl]
= CERT_REV_M_DO_NOT_TEST_USING_THIS_METHOD;
rev.leafTests.cert_rev_flags_per_method[cert_revocation_method_ocsp] =
rev.chainTests.cert_rev_flags_per_method[cert_revocation_method_ocsp]
= ocspRevMethodFlags;
rev.leafTests.cert_rev_method_independent_flags =
rev.chainTests.cert_rev_method_independent_flags =
// avoiding the network is good, let's try local first
CERT_REV_MI_TEST_ALL_LOCAL_INFORMATION_FIRST
// is overall revocation requirement strict or relaxed?
| CERT_REV_MI_REQUIRE_SOME_FRESH_INFO_AVAILABLE
;
rev.leafTests.preferred_methods[0] =
rev.chainTests.preferred_methods[0] = cert_revocation_method_ocsp;
cvin[i].type = cert_pi_policyOID;
cvin[i].value.arraySize = 1;
cvin[i].value.array.oids = &evPolicy;
++i;
MOZ_ASSERT(trustAnchors);
cvin[i].type = cert_pi_trustAnchors;
cvin[i].value.pointer.chain = trustAnchors;
++i;
cvin[i].type = cert_pi_end;
rv = CERT_PKIXVerifyCert(cert, usage, cvin, cvout, pinArg);
if (rv == SECSuccess) {
if (evOidPolicy) {
*evOidPolicy = evPolicy;
}
PR_LOG(gPIPNSSLog, PR_LOG_DEBUG,
("VerifyCert: successful CERT_PKIXVerifyCert(ev) \n"));
goto pkix_done;
}
PR_LOG(gPIPNSSLog, PR_LOG_DEBUG,
("VerifyCert: failed CERT_PKIXVerifyCert(ev)\n"));
if (validationChain && *validationChain) {
// There SHOULD not be a validation chain on failure, asserion here for
// the debug builds AND a fallback for production builds
MOZ_ASSERT(false,
"certPKIXVerifyCert returned failure AND a validationChain");
CERT_DestroyCertList(*validationChain);
*validationChain = nullptr;
}
if (verifyLog) {
// Cleanup the log so that it is ready the the next validation
CERTVerifyLogNode *i_node;
for (i_node = verifyLog->head; i_node; i_node = i_node->next) {
//destroy cert if any.
if (i_node->cert) {
CERT_DestroyCertificate(i_node->cert);
}
// No need to cleanup the actual nodes in the arena.
}
verifyLog->count = 0;
verifyLog->head = nullptr;
verifyLog->tail = nullptr;
}
}
if (!nsNSSComponent::globalConstFlagUsePKIXVerification){
// XXX: we do not care about the localOnly flag (currently) as the
// caller that wants localOnly should disable and reenable the fetching.
return ClassicVerifyCert(cert, usage, time, pinArg, validationChain,
verifyLog);
}
// The current flags check the chain the same way as the leafs
rev.leafTests.cert_rev_flags_per_method[cert_revocation_method_crl] =
rev.chainTests.cert_rev_flags_per_method[cert_revocation_method_crl] =
// implicit default source - makes no sense for CRLs
CERT_REV_M_IGNORE_IMPLICIT_DEFAULT_SOURCE
// let's not stop on fresh CRL. If OCSP is enabled, too, let's check it
| CERT_REV_M_CONTINUE_TESTING_ON_FRESH_INFO
// no fresh CRL? well, let other flag decide whether to fail or not
| CERT_REV_M_IGNORE_MISSING_FRESH_INFO
// testing using local CRLs is always allowed
| CERT_REV_M_TEST_USING_THIS_METHOD
// no local crl and don't know where to get it from? ignore
| CERT_REV_M_SKIP_TEST_ON_MISSING_SOURCE
// crl download based on parameter
| ((mCRLDownloadEnabled && !localOnly) ?
CERT_REV_M_ALLOW_NETWORK_FETCHING : CERT_REV_M_FORBID_NETWORK_FETCHING)
;
rev.leafTests.cert_rev_flags_per_method[cert_revocation_method_ocsp] =
rev.chainTests.cert_rev_flags_per_method[cert_revocation_method_ocsp] =
// use OCSP
CERT_REV_M_TEST_USING_THIS_METHOD
// if app has a default OCSP responder configured, let's use it
| CERT_REV_M_ALLOW_IMPLICIT_DEFAULT_SOURCE
// of course OCSP doesn't work without a source. let's accept such certs
| CERT_REV_M_SKIP_TEST_ON_MISSING_SOURCE
// if ocsp is required stop on lack of freshness
| (mOCSPStrict ?
CERT_REV_M_FAIL_ON_MISSING_FRESH_INFO : CERT_REV_M_IGNORE_MISSING_FRESH_INFO)
// ocsp success is sufficient
| CERT_REV_M_STOP_TESTING_ON_FRESH_INFO
// ocsp enabled controls network fetching, too
| ((mOCSPDownloadEnabled && !localOnly) ?
CERT_REV_M_ALLOW_NETWORK_FETCHING : CERT_REV_M_FORBID_NETWORK_FETCHING)
| (mOCSPGETEnabled ? 0 : CERT_REV_M_FORCE_POST_METHOD_FOR_OCSP);
;
rev.leafTests.preferred_methods[0] =
rev.chainTests.preferred_methods[0] = cert_revocation_method_ocsp;
rev.leafTests.cert_rev_method_independent_flags =
rev.chainTests.cert_rev_method_independent_flags =
// avoiding the network is good, let's try local first
CERT_REV_MI_TEST_ALL_LOCAL_INFORMATION_FIRST
// is overall revocation requirement strict or relaxed?
| (mRequireRevocationInfo ?
CERT_REV_MI_REQUIRE_SOME_FRESH_INFO_AVAILABLE : CERT_REV_MI_NO_OVERALL_INFO_REQUIREMENT)
;
// Skip EV parameters
cvin[evParamLocation].type = cert_pi_end;
PR_LOG(gPIPNSSLog, PR_LOG_DEBUG, ("VerifyCert: calling CERT_PKIXVerifyCert(dv) \n"));
rv = CERT_PKIXVerifyCert(cert, usage, cvin, cvout, pinArg);
pkix_done:
if (validationChain) {
PR_LOG(gPIPNSSLog, PR_LOG_DEBUG, ("VerifyCert: validation chain requested\n"));
ScopedCERTCertificate trustAnchor(cvout[validationTrustAnchorLocation].value.pointer.cert);
if (rv == SECSuccess) {
if (! cvout[validationChainLocation].value.pointer.chain) {
PR_SetError(PR_UNKNOWN_ERROR, 0);
return SECFailure;
}
PR_LOG(gPIPNSSLog, PR_LOG_DEBUG, ("VerifyCert: I have a chain\n"));
*validationChain = cvout[validationChainLocation].value.pointer.chain;
if (trustAnchor) {
// we should only add the issuer to the chain if it is not already
// present. On CA cert checking, the issuer is the same cert, so in
// that case we do not add the cert to the chain.
if (!CERT_CompareCerts(trustAnchor, cert)) {
PR_LOG(gPIPNSSLog, PR_LOG_DEBUG, ("VerifyCert: adding issuer to tail for display\n"));
// note: rv is reused to catch errors on cert creation!
ScopedCERTCertificate tempCert(CERT_DupCertificate(trustAnchor));
rv = CERT_AddCertToListTail(*validationChain, tempCert);
if (rv == SECSuccess) {
tempCert.forget(); // ownership traferred to validationChain
} else {
CERT_DestroyCertList(*validationChain);
*validationChain = nullptr;
}
}
}
} else {
// Validation was a fail, clean up if needed
if (cvout[validationChainLocation].value.pointer.chain) {
CERT_DestroyCertList(cvout[validationChainLocation].value.pointer.chain);
}
}
}
return rv;
#endif
}
