/*
* Create a DER-encoded OCSP request (for the certificate whose nickname
* is "name") and dump it out.
*/
static SECStatus
create_request (FILE *out_file, CERTCertDBHandle *handle, CERTCertificate *cert,
PRBool add_service_locator, PRBool add_acceptable_responses)
{
CERTCertList *certs = NULL;
CERTCertificate *myCert = NULL;
CERTOCSPRequest *request = NULL;
int64 now = PR_Now();
SECItem *encoding = NULL;
SECStatus rv = SECFailure;
if (handle == NULL || cert == NULL)
return rv;
myCert = CERT_DupCertificate(cert);
if (myCert == NULL)
goto loser;
/*
* We need to create a list of one.
*/
certs = CERT_NewCertList();
if (certs == NULL)
goto loser;
if (CERT_AddCertToListTail (certs, myCert) != SECSuccess)
goto loser;
/*
* Now that cert is included in the list, we need to be careful
* that we do not try to destroy it twice. This will prevent that.
*/
myCert = NULL;
request = CERT_CreateOCSPRequest (certs, now, add_service_locator, NULL);
if (request == NULL)
goto loser;
if (add_acceptable_responses) {
rv = CERT_AddOCSPAcceptableResponses(request,
SEC_OID_PKIX_OCSP_BASIC_RESPONSE);
if (rv != SECSuccess)
goto loser;
}
encoding = CERT_EncodeOCSPRequest (NULL, request, NULL);
if (encoding == NULL)
goto loser;
MAKE_FILE_BINARY(out_file);
if (fwrite (encoding->data, encoding->len, 1, out_file) != 1)
goto loser;
rv = SECSuccess;
loser:
if (encoding != NULL)
SECITEM_FreeItem(encoding, PR_TRUE);
if (request != NULL)
CERT_DestroyOCSPRequest(request);
if (certs != NULL)
CERT_DestroyCertList (certs);
if (myCert != NULL)
CERT_DestroyCertificate(myCert);
return rv;
}
/*
* Create a DER-encoded OCSP request (for the certificate whose nickname is
* "cert_name"), then get and dump a corresponding response. The responder
* location is either specified explicitly (as "responder_url") or found
* via the AuthorityInfoAccess URL in the cert.
*/
static SECStatus
dump_response (FILE *out_file, CERTCertDBHandle *handle, CERTCertificate *cert,
const char *responder_url)
{
CERTCertList *certs = NULL;
CERTCertificate *myCert = NULL;
char *loc = NULL;
int64 now = PR_Now();
SECItem *response = NULL;
SECStatus rv = SECFailure;
PRBool includeServiceLocator;
if (handle == NULL || cert == NULL)
return rv;
myCert = CERT_DupCertificate(cert);
if (myCert == NULL)
goto loser;
if (responder_url != NULL) {
loc = (char *) responder_url;
includeServiceLocator = PR_TRUE;
} else {
loc = CERT_GetOCSPAuthorityInfoAccessLocation (cert);
if (loc == NULL)
goto loser;
includeServiceLocator = PR_FALSE;
}
/*
* We need to create a list of one.
*/
certs = CERT_NewCertList();
if (certs == NULL)
goto loser;
if (CERT_AddCertToListTail (certs, myCert) != SECSuccess)
goto loser;
/*
* Now that cert is included in the list, we need to be careful
* that we do not try to destroy it twice. This will prevent that.
*/
myCert = NULL;
response = CERT_GetEncodedOCSPResponse (NULL, certs, loc, now,
includeServiceLocator,
NULL, NULL, NULL);
if (response == NULL)
goto loser;
MAKE_FILE_BINARY(out_file);
if (fwrite (response->data, response->len, 1, out_file) != 1)
goto loser;
rv = SECSuccess;
loser:
if (response != NULL)
SECITEM_FreeItem (response, PR_TRUE);
if (certs != NULL)
CERT_DestroyCertList (certs);
if (myCert != NULL)
CERT_DestroyCertificate(myCert);
if (loc != NULL && loc != responder_url)
PORT_Free (loc);
return rv;
}
SECStatus
NSS_CMSSignedData_ImportCerts(NSSCMSSignedData *sigd, CERTCertDBHandle *certdb,
SECCertUsage certusage, PRBool keepcerts)
{
int certcount;
CERTCertificate **certArray = NULL;
CERTCertList *certList = NULL;
CERTCertListNode *node;
SECStatus rv;
SECItem **rawArray;
int i;
PRTime now;
if (!sigd) {
PORT_SetError(SEC_ERROR_INVALID_ARGS);
return SECFailure;
}
certcount = NSS_CMSArray_Count((void **)sigd->rawCerts);
/* get the certs in the temp DB */
rv = CERT_ImportCerts(certdb, certusage, certcount, sigd->rawCerts,
&certArray, PR_FALSE, PR_FALSE, NULL);
if (rv != SECSuccess) {
goto loser;
}
/* save the certs so they don't get destroyed */
for (i=0; i < certcount; i++) {
CERTCertificate *cert = certArray[i];
if (cert)
NSS_CMSSignedData_AddTempCertificate(sigd, cert);
}
if (!keepcerts) {
goto done;
}
/* build a CertList for filtering */
certList = CERT_NewCertList();
if (certList == NULL) {
rv = SECFailure;
goto loser;
}
for (i=0; i < certcount; i++) {
CERTCertificate *cert = certArray[i];
if (cert)
cert = CERT_DupCertificate(cert);
if (cert)
CERT_AddCertToListTail(certList,cert);
}
/* filter out the certs we don't want */
rv = CERT_FilterCertListByUsage(certList,certusage, PR_FALSE);
if (rv != SECSuccess) {
goto loser;
}
/* go down the remaining list of certs and verify that they have
* valid chains, then import them.
*/
now = PR_Now();
for (node = CERT_LIST_HEAD(certList) ; !CERT_LIST_END(node,certList);
node= CERT_LIST_NEXT(node)) {
CERTCertificateList *certChain;
if (CERT_VerifyCert(certdb, node->cert,
PR_TRUE, certusage, now, NULL, NULL) != SECSuccess) {
continue;
}
certChain = CERT_CertChainFromCert(node->cert, certusage, PR_FALSE);
if (!certChain) {
continue;
}
/*
* CertChain returns an array of SECItems, import expects an array of
* SECItem pointers. Create the SECItem Pointers from the array of
* SECItems.
*/
rawArray = (SECItem **)PORT_Alloc(certChain->len*sizeof (SECItem *));
if (!rawArray) {
CERT_DestroyCertificateList(certChain);
continue;
}
for (i=0; i < certChain->len; i++) {
rawArray[i] = &certChain->certs[i];
}
(void )CERT_ImportCerts(certdb, certusage, certChain->len,
rawArray, NULL, keepcerts, PR_FALSE, NULL);
PORT_Free(rawArray);
CERT_DestroyCertificateList(certChain);
}
rv = SECSuccess;
/* XXX CRL handling */
done:
if (sigd->signerInfos != NULL) {
/* fill in all signerinfo's certs */
for (i = 0; sigd->signerInfos[i] != NULL; i++)
(void)NSS_CMSSignerInfo_GetSigningCertificate(
sigd->signerInfos[i], certdb);
}
loser:
/* now free everything */
if (certArray) {
CERT_DestroyCertArray(certArray,certcount);
}
if (certList) {
CERT_DestroyCertList(certList);
}
return rv;
}
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
}
nsresult
VerifyCMSDetachedSignatureIncludingCertificate(
const SECItem& buffer, const SECItem& detachedDigest,
nsresult (*verifyCertificate)(CERTCertificate* cert, void* context,
void* pinArg),
void *verifyCertificateContext, void* pinArg)
{
// XXX: missing pinArg is tolerated.
if (NS_WARN_IF(!buffer.data && buffer.len > 0) ||
NS_WARN_IF(!detachedDigest.data && detachedDigest.len > 0) ||
(!verifyCertificate) ||
NS_WARN_IF(!verifyCertificateContext)) {
return NS_ERROR_INVALID_ARG;
}
ScopedNSSCMSMessage
cmsMsg(NSS_CMSMessage_CreateFromDER(const_cast<SECItem*>(&buffer), nullptr,
nullptr, nullptr, nullptr, nullptr,
nullptr));
if (!cmsMsg) {
return NS_ERROR_CMS_VERIFY_ERROR_PROCESSING;
}
if (!NSS_CMSMessage_IsSigned(cmsMsg.get())) {
return NS_ERROR_CMS_VERIFY_NOT_SIGNED;
}
NSSCMSContentInfo* cinfo = NSS_CMSMessage_ContentLevel(cmsMsg.get(), 0);
if (!cinfo) {
return NS_ERROR_CMS_VERIFY_NO_CONTENT_INFO;
}
// signedData is non-owning
NSSCMSSignedData* signedData =
reinterpret_cast<NSSCMSSignedData*>(NSS_CMSContentInfo_GetContent(cinfo));
if (!signedData) {
return NS_ERROR_CMS_VERIFY_NO_CONTENT_INFO;
}
// Set digest value.
if (NSS_CMSSignedData_SetDigestValue(signedData, SEC_OID_SHA1,
const_cast<SECItem*>(&detachedDigest))) {
return NS_ERROR_CMS_VERIFY_BAD_DIGEST;
}
// Parse the certificates into CERTCertificate objects held in memory so
// verifyCertificate will be able to find them during path building.
ScopedCERTCertList certs(CERT_NewCertList());
if (!certs) {
return NS_ERROR_OUT_OF_MEMORY;
}
if (signedData->rawCerts) {
for (size_t i = 0; signedData->rawCerts[i]; ++i) {
ScopedCERTCertificate
cert(CERT_NewTempCertificate(CERT_GetDefaultCertDB(),
signedData->rawCerts[i], nullptr, false,
true));
// Skip certificates that fail to parse
if (cert) {
if (CERT_AddCertToListTail(certs.get(), cert.get()) == SECSuccess) {
cert.forget(); // ownership transfered
} else {
return NS_ERROR_OUT_OF_MEMORY;
}
}
}
}
// Get the end-entity certificate.
int numSigners = NSS_CMSSignedData_SignerInfoCount(signedData);
if (NS_WARN_IF(numSigners != 1)) {
return NS_ERROR_CMS_VERIFY_ERROR_PROCESSING;
}
// signer is non-owning.
NSSCMSSignerInfo* signer = NSS_CMSSignedData_GetSignerInfo(signedData, 0);
if (NS_WARN_IF(!signer)) {
return NS_ERROR_CMS_VERIFY_ERROR_PROCESSING;
}
CERTCertificate* signerCert =
NSS_CMSSignerInfo_GetSigningCertificate(signer, CERT_GetDefaultCertDB());
if (!signerCert) {
return NS_ERROR_CMS_VERIFY_ERROR_PROCESSING;
}
nsresult rv = verifyCertificate(signerCert, verifyCertificateContext, pinArg);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
// See NSS_CMSContentInfo_GetContentTypeOID, which isn't exported from NSS.
SECOidData* contentTypeOidData =
SECOID_FindOID(&signedData->contentInfo.contentType);
if (!contentTypeOidData) {
return NS_ERROR_CMS_VERIFY_ERROR_PROCESSING;
}
return MapSECStatus(NSS_CMSSignerInfo_Verify(signer,
const_cast<SECItem*>(&detachedDigest),
&contentTypeOidData->oid));
}
/*
* [noscript] void importEmailCertificates(in charPtr data, in unsigned long length,
* in nsIInterfaceRequestor ctx);
*/
NS_IMETHODIMP
nsNSSCertificateDB::ImportEmailCertificate(PRUint8 * data, PRUint32 length,
nsIInterfaceRequestor *ctx)
{
nsNSSShutDownPreventionLock locker;
SECStatus srv = SECFailure;
nsresult nsrv = NS_OK;
CERTCertDBHandle *certdb;
CERTCertificate **certArray = NULL;
CERTCertList *certList = NULL;
CERTCertListNode *node;
PRTime now;
SECCertUsage certusage;
SECItem **rawArray;
int numcerts;
int i;
PRArenaPool *arena = PORT_NewArena(DER_DEFAULT_CHUNKSIZE);
if (!arena)
return NS_ERROR_OUT_OF_MEMORY;
CERTDERCerts *certCollection = getCertsFromPackage(arena, data, length);
if (!certCollection) {
PORT_FreeArena(arena, PR_FALSE);
return NS_ERROR_FAILURE;
}
certdb = CERT_GetDefaultCertDB();
certusage = certUsageEmailRecipient;
numcerts = certCollection->numcerts;
rawArray = (SECItem **) PORT_Alloc(sizeof(SECItem *) * numcerts);
if ( !rawArray ) {
nsrv = NS_ERROR_FAILURE;
goto loser;
}
for (i=0; i < numcerts; i++) {
rawArray[i] = &certCollection->rawCerts[i];
}
srv = CERT_ImportCerts(certdb, certusage, numcerts, rawArray,
&certArray, PR_FALSE, PR_FALSE, NULL);
PORT_Free(rawArray);
rawArray = NULL;
if (srv != SECSuccess) {
nsrv = NS_ERROR_FAILURE;
goto loser;
}
// build a CertList for filtering
certList = CERT_NewCertList();
if (certList == NULL) {
nsrv = NS_ERROR_FAILURE;
goto loser;
}
for (i=0; i < numcerts; i++) {
CERTCertificate *cert = certArray[i];
if (cert)
cert = CERT_DupCertificate(cert);
if (cert)
CERT_AddCertToListTail(certList, cert);
}
/* go down the remaining list of certs and verify that they have
* valid chains, then import them.
*/
now = PR_Now();
for (node = CERT_LIST_HEAD(certList);
!CERT_LIST_END(node,certList);
node = CERT_LIST_NEXT(node)) {
bool alert_and_skip = false;
if (!node->cert) {
continue;
}
if (CERT_VerifyCert(certdb, node->cert,
PR_TRUE, certusage, now, ctx, NULL) != SECSuccess) {
alert_and_skip = true;
}
CERTCertificateList *certChain = nsnull;
CERTCertificateListCleaner chainCleaner(certChain);
if (!alert_and_skip) {
certChain = CERT_CertChainFromCert(node->cert, certusage, PR_FALSE);
if (!certChain) {
alert_and_skip = true;
}
}
if (alert_and_skip) {
nsCOMPtr<nsIX509Cert> certToShow = new nsNSSCertificate(node->cert);
DisplayCertificateAlert(ctx, "NotImportingUnverifiedCert", certToShow);
continue;
}
/*
* CertChain returns an array of SECItems, import expects an array of
* SECItem pointers. Create the SECItem Pointers from the array of
* SECItems.
*/
rawArray = (SECItem **) PORT_Alloc(certChain->len * sizeof(SECItem *));
if (!rawArray) {
continue;
}
for (i=0; i < certChain->len; i++) {
rawArray[i] = &certChain->certs[i];
}
CERT_ImportCerts(certdb, certusage, certChain->len,
rawArray, NULL, PR_TRUE, PR_FALSE, NULL);
CERT_SaveSMimeProfile(node->cert, NULL, NULL);
PORT_Free(rawArray);
}
loser:
if (certArray) {
CERT_DestroyCertArray(certArray, numcerts);
}
if (certList) {
CERT_DestroyCertList(certList);
}
if (arena)
PORT_FreeArena(arena, PR_TRUE);
return nsrv;
}
nsresult
nsNSSCertificateDB::handleCACertDownload(nsIArray *x509Certs,
nsIInterfaceRequestor *ctx)
{
// First thing we have to do is figure out which certificate we're
// gonna present to the user. The CA may have sent down a list of
// certs which may or may not be a chained list of certs. Until
// the day we can design some solid UI for the general case, we'll
// code to the > 90% case. That case is where a CA sends down a
// list that is a hierarchy whose root is either the first or
// the last cert. What we're gonna do is compare the first
// 2 entries, if the second was signed by the first, we assume
// the root cert is the first cert and display it. Otherwise,
// we compare the last 2 entries, if the second to last cert was
// signed by the last cert, then we assume the last cert is the
// root and display it.
nsNSSShutDownPreventionLock locker;
PRUint32 numCerts;
x509Certs->GetLength(&numCerts);
NS_ASSERTION(numCerts > 0, "Didn't get any certs to import.");
if (numCerts == 0)
return NS_OK; // Nothing to import, so nothing to do.
nsCOMPtr<nsIX509Cert> certToShow;
nsCOMPtr<nsISupports> isupports;
PRUint32 selCertIndex;
if (numCerts == 1) {
// There's only one cert, so let's show it.
selCertIndex = 0;
certToShow = do_QueryElementAt(x509Certs, selCertIndex);
} else {
nsCOMPtr<nsIX509Cert> cert0; // first cert
nsCOMPtr<nsIX509Cert> cert1; // second cert
nsCOMPtr<nsIX509Cert> certn_2; // second to last cert
nsCOMPtr<nsIX509Cert> certn_1; // last cert
cert0 = do_QueryElementAt(x509Certs, 0);
cert1 = do_QueryElementAt(x509Certs, 1);
certn_2 = do_QueryElementAt(x509Certs, numCerts-2);
certn_1 = do_QueryElementAt(x509Certs, numCerts-1);
nsXPIDLString cert0SubjectName;
nsXPIDLString cert1IssuerName;
nsXPIDLString certn_2IssuerName;
nsXPIDLString certn_1SubjectName;
cert0->GetSubjectName(cert0SubjectName);
cert1->GetIssuerName(cert1IssuerName);
certn_2->GetIssuerName(certn_2IssuerName);
certn_1->GetSubjectName(certn_1SubjectName);
if (cert1IssuerName.Equals(cert0SubjectName)) {
// In this case, the first cert in the list signed the second,
// so the first cert is the root. Let's display it.
selCertIndex = 0;
certToShow = cert0;
} else
if (certn_2IssuerName.Equals(certn_1SubjectName)) {
// In this case the last cert has signed the second to last cert.
// The last cert is the root, so let's display it.
selCertIndex = numCerts-1;
certToShow = certn_1;
} else {
// It's not a chain, so let's just show the first one in the
// downloaded list.
selCertIndex = 0;
certToShow = cert0;
}
}
if (!certToShow)
return NS_ERROR_FAILURE;
nsCOMPtr<nsICertificateDialogs> dialogs;
nsresult rv = ::getNSSDialogs(getter_AddRefs(dialogs),
NS_GET_IID(nsICertificateDialogs),
NS_CERTIFICATEDIALOGS_CONTRACTID);
if (NS_FAILED(rv))
return rv;
SECItem der;
rv=certToShow->GetRawDER(&der.len, (PRUint8 **)&der.data);
if (NS_FAILED(rv))
return rv;
PR_LOG(gPIPNSSLog, PR_LOG_DEBUG, ("Creating temp cert\n"));
CERTCertificate *tmpCert;
CERTCertDBHandle *certdb = CERT_GetDefaultCertDB();
tmpCert = CERT_FindCertByDERCert(certdb, &der);
if (!tmpCert) {
tmpCert = CERT_NewTempCertificate(certdb, &der,
nsnull, PR_FALSE, PR_TRUE);
}
nsMemory::Free(der.data);
der.data = nsnull;
der.len = 0;
if (!tmpCert) {
NS_ERROR("Couldn't create cert from DER blob");
return NS_ERROR_FAILURE;
}
CERTCertificateCleaner tmpCertCleaner(tmpCert);
if (!CERT_IsCACert(tmpCert, NULL)) {
DisplayCertificateAlert(ctx, "NotACACert", certToShow);
return NS_ERROR_FAILURE;
}
if (tmpCert->isperm) {
DisplayCertificateAlert(ctx, "CaCertExists", certToShow);
return NS_ERROR_FAILURE;
}
PRUint32 trustBits;
PRBool allows;
rv = dialogs->ConfirmDownloadCACert(ctx, certToShow, &trustBits, &allows);
if (NS_FAILED(rv))
return rv;
if (!allows)
return NS_ERROR_NOT_AVAILABLE;
PR_LOG(gPIPNSSLog, PR_LOG_DEBUG, ("trust is %d\n", trustBits));
nsXPIDLCString nickname;
nickname.Adopt(CERT_MakeCANickname(tmpCert));
PR_LOG(gPIPNSSLog, PR_LOG_DEBUG, ("Created nick \"%s\"\n", nickname.get()));
nsNSSCertTrust trust;
trust.SetValidCA();
trust.AddCATrust(!!(trustBits & nsIX509CertDB::TRUSTED_SSL),
!!(trustBits & nsIX509CertDB::TRUSTED_EMAIL),
!!(trustBits & nsIX509CertDB::TRUSTED_OBJSIGN));
SECStatus srv = CERT_AddTempCertToPerm(tmpCert,
const_cast<char*>(nickname.get()),
trust.GetTrust());
if (srv != SECSuccess)
return NS_ERROR_FAILURE;
// Import additional delivered certificates that can be verified.
// build a CertList for filtering
CERTCertList *certList = CERT_NewCertList();
if (certList == NULL) {
return NS_ERROR_FAILURE;
}
CERTCertListCleaner listCleaner(certList);
// get all remaining certs into temp store
for (PRUint32 i=0; i<numCerts; i++) {
if (i == selCertIndex) {
// we already processed that one
continue;
}
certToShow = do_QueryElementAt(x509Certs, i);
certToShow->GetRawDER(&der.len, (PRUint8 **)&der.data);
CERTCertificate *tmpCert2 =
CERT_NewTempCertificate(certdb, &der, nsnull, PR_FALSE, PR_TRUE);
nsMemory::Free(der.data);
der.data = nsnull;
der.len = 0;
if (!tmpCert2) {
NS_ERROR("Couldn't create temp cert from DER blob");
continue; // Let's try to import the rest of 'em
}
CERT_AddCertToListTail(certList, tmpCert2);
}
return ImportValidCACertsInList(certList, ctx);
}
SECStatus
CertVerifier::VerifyCert(CERTCertificate* cert, SECCertificateUsage usage,
Time time, void* pinArg, const char* hostname,
const Flags flags,
/*optional*/ const SECItem* stapledOCSPResponseSECItem,
/*optional out*/ ScopedCERTCertList* builtChain,
/*optional out*/ SECOidTag* evOidPolicy)
{
PR_LOG(gCertVerifierLog, PR_LOG_DEBUG, ("Top of VerifyCert\n"));
PR_ASSERT(cert);
PR_ASSERT(usage == certificateUsageSSLServer || !(flags & FLAG_MUST_BE_EV));
if (builtChain) {
*builtChain = nullptr;
}
if (evOidPolicy) {
*evOidPolicy = SEC_OID_UNKNOWN;
}
if (!cert ||
(usage != certificateUsageSSLServer && (flags & FLAG_MUST_BE_EV))) {
PR_SetError(SEC_ERROR_INVALID_ARGS, 0);
return SECFailure;
}
Result rv;
Input certDER;
rv = certDER.Init(cert->derCert.data, cert->derCert.len);
if (rv != Success) {
PR_SetError(MapResultToPRErrorCode(rv), 0);
return SECFailure;
}
ChainValidationCallbackState callbackState = {
hostname, mPinningEnforcementLevel, usage, time
};
CERTChainVerifyCallback callbackContainer;
callbackContainer.isChainValid = chainValidationCallback;
callbackContainer.isChainValidArg = &callbackState;
NSSCertDBTrustDomain::OCSPFetching ocspFetching
= !mOCSPDownloadEnabled ||
(flags & FLAG_LOCAL_ONLY) ? NSSCertDBTrustDomain::NeverFetchOCSP
: !mOCSPStrict ? NSSCertDBTrustDomain::FetchOCSPForDVSoftFail
: NSSCertDBTrustDomain::FetchOCSPForDVHardFail;
ocsp_get_config ocspGETConfig = mOCSPGETEnabled ? ocsp_get_enabled
: ocsp_get_disabled;
Input stapledOCSPResponseInput;
const Input* stapledOCSPResponse = nullptr;
if (stapledOCSPResponseSECItem) {
rv = stapledOCSPResponseInput.Init(stapledOCSPResponseSECItem->data,
stapledOCSPResponseSECItem->len);
if (rv != Success) {
// The stapled OCSP response was too big.
PR_SetError(SEC_ERROR_OCSP_MALFORMED_RESPONSE, 0);
return SECFailure;
}
stapledOCSPResponse = &stapledOCSPResponseInput;
}
switch (usage) {
case certificateUsageSSLClient: {
// XXX: We don't really have a trust bit for SSL client authentication so
// just use trustEmail as it is the closest alternative.
NSSCertDBTrustDomain trustDomain(trustEmail, ocspFetching, mOCSPCache,
pinArg, ocspGETConfig, nullptr,
builtChain);
rv = BuildCertChain(trustDomain, certDER, time,
EndEntityOrCA::MustBeEndEntity,
KeyUsage::digitalSignature,
KeyPurposeId::id_kp_clientAuth,
CertPolicyId::anyPolicy, stapledOCSPResponse);
break;
}
case certificateUsageSSLServer: {
// TODO: When verifying a certificate in an SSL handshake, we should
// restrict the acceptable key usage based on the key exchange method
// chosen by the server.
#ifndef MOZ_NO_EV_CERTS
// Try to validate for EV first.
CertPolicyId evPolicy;
SECOidTag evPolicyOidTag;
SECStatus srv = GetFirstEVPolicy(cert, evPolicy, evPolicyOidTag);
if (srv == SECSuccess) {
NSSCertDBTrustDomain
trustDomain(trustSSL,
ocspFetching == NSSCertDBTrustDomain::NeverFetchOCSP
? NSSCertDBTrustDomain::LocalOnlyOCSPForEV
: NSSCertDBTrustDomain::FetchOCSPForEV,
mOCSPCache, pinArg, ocspGETConfig,
&callbackContainer, builtChain);
rv = BuildCertChainForOneKeyUsage(trustDomain, certDER, time,
KeyUsage::digitalSignature,// (EC)DHE
KeyUsage::keyEncipherment, // RSA
KeyUsage::keyAgreement, // (EC)DH
KeyPurposeId::id_kp_serverAuth,
evPolicy, stapledOCSPResponse);
if (rv == Success) {
if (evOidPolicy) {
*evOidPolicy = evPolicyOidTag;
}
break;
}
}
#endif
if (flags & FLAG_MUST_BE_EV) {
rv = Result::ERROR_POLICY_VALIDATION_FAILED;
break;
}
// Now try non-EV.
NSSCertDBTrustDomain trustDomain(trustSSL, ocspFetching, mOCSPCache,
pinArg, ocspGETConfig, &callbackContainer,
builtChain);
rv = BuildCertChainForOneKeyUsage(trustDomain, certDER, time,
KeyUsage::digitalSignature, // (EC)DHE
KeyUsage::keyEncipherment, // RSA
KeyUsage::keyAgreement, // (EC)DH
KeyPurposeId::id_kp_serverAuth,
CertPolicyId::anyPolicy,
stapledOCSPResponse);
break;
}
case certificateUsageSSLCA: {
NSSCertDBTrustDomain trustDomain(trustSSL, ocspFetching, mOCSPCache,
pinArg, ocspGETConfig, nullptr,
builtChain);
rv = BuildCertChain(trustDomain, certDER, time,
EndEntityOrCA::MustBeCA, KeyUsage::keyCertSign,
KeyPurposeId::id_kp_serverAuth,
CertPolicyId::anyPolicy, stapledOCSPResponse);
break;
}
case certificateUsageEmailSigner: {
NSSCertDBTrustDomain trustDomain(trustEmail, ocspFetching, mOCSPCache,
pinArg, ocspGETConfig, nullptr,
builtChain);
rv = BuildCertChain(trustDomain, certDER, time,
EndEntityOrCA::MustBeEndEntity,
KeyUsage::digitalSignature,
KeyPurposeId::id_kp_emailProtection,
CertPolicyId::anyPolicy, stapledOCSPResponse);
break;
}
case certificateUsageEmailRecipient: {
// TODO: The higher level S/MIME processing should pass in which key
// usage it is trying to verify for, and base its algorithm choices
// based on the result of the verification(s).
NSSCertDBTrustDomain trustDomain(trustEmail, ocspFetching, mOCSPCache,
pinArg, ocspGETConfig, nullptr,
builtChain);
rv = BuildCertChain(trustDomain, certDER, time,
EndEntityOrCA::MustBeEndEntity,
KeyUsage::keyEncipherment, // RSA
KeyPurposeId::id_kp_emailProtection,
CertPolicyId::anyPolicy, stapledOCSPResponse);
if (rv == Result::ERROR_INADEQUATE_KEY_USAGE) {
rv = BuildCertChain(trustDomain, certDER, time,
EndEntityOrCA::MustBeEndEntity,
KeyUsage::keyAgreement, // ECDH/DH
KeyPurposeId::id_kp_emailProtection,
CertPolicyId::anyPolicy, stapledOCSPResponse);
}
break;
}
case certificateUsageObjectSigner: {
NSSCertDBTrustDomain trustDomain(trustObjectSigning, ocspFetching,
mOCSPCache, pinArg, ocspGETConfig,
nullptr, builtChain);
rv = BuildCertChain(trustDomain, certDER, time,
EndEntityOrCA::MustBeEndEntity,
KeyUsage::digitalSignature,
KeyPurposeId::id_kp_codeSigning,
CertPolicyId::anyPolicy, stapledOCSPResponse);
break;
}
case certificateUsageVerifyCA:
case certificateUsageStatusResponder: {
// XXX This is a pretty useless way to verify a certificate. It is used
// by the certificate viewer UI. Because we don't know what trust bit is
// interesting, we just try them all.
mozilla::pkix::EndEntityOrCA endEntityOrCA;
mozilla::pkix::KeyUsage keyUsage;
KeyPurposeId eku;
if (usage == certificateUsageVerifyCA) {
endEntityOrCA = EndEntityOrCA::MustBeCA;
keyUsage = KeyUsage::keyCertSign;
eku = KeyPurposeId::anyExtendedKeyUsage;
} else {
endEntityOrCA = EndEntityOrCA::MustBeEndEntity;
keyUsage = KeyUsage::digitalSignature;
eku = KeyPurposeId::id_kp_OCSPSigning;
}
NSSCertDBTrustDomain sslTrust(trustSSL, ocspFetching, mOCSPCache, pinArg,
ocspGETConfig, nullptr, builtChain);
rv = BuildCertChain(sslTrust, certDER, time, endEntityOrCA,
keyUsage, eku, CertPolicyId::anyPolicy,
stapledOCSPResponse);
if (rv == Result::ERROR_UNKNOWN_ISSUER) {
NSSCertDBTrustDomain emailTrust(trustEmail, ocspFetching, mOCSPCache,
pinArg, ocspGETConfig, nullptr,
builtChain);
rv = BuildCertChain(emailTrust, certDER, time, endEntityOrCA,
keyUsage, eku, CertPolicyId::anyPolicy,
stapledOCSPResponse);
if (rv == Result::ERROR_UNKNOWN_ISSUER) {
NSSCertDBTrustDomain objectSigningTrust(trustObjectSigning,
ocspFetching, mOCSPCache,
pinArg, ocspGETConfig,
nullptr, builtChain);
rv = BuildCertChain(objectSigningTrust, certDER, time,
endEntityOrCA, keyUsage, eku,
CertPolicyId::anyPolicy, stapledOCSPResponse);
}
}
break;
}
default:
rv = Result::FATAL_ERROR_INVALID_ARGS;
}
if (rv != Success) {
if (rv != Result::ERROR_KEY_PINNING_FAILURE) {
ScopedCERTCertificate certCopy(CERT_DupCertificate(cert));
if (!certCopy) {
return SECFailure;
}
ScopedCERTCertList certList(CERT_NewCertList());
if (!certList) {
return SECFailure;
}
SECStatus srv = CERT_AddCertToListTail(certList.get(), certCopy.get());
if (srv != SECSuccess) {
return SECFailure;
}
certCopy.forget(); // now owned by certList
PRBool chainOK = false;
srv = chainValidationCallback(&callbackState, certList, &chainOK);
if (srv != SECSuccess) {
return SECFailure;
}
if (!chainOK) {
rv = Result::ERROR_KEY_PINNING_FAILURE;
}
}
PR_SetError(MapResultToPRErrorCode(rv), 0);
return SECFailure;
}
return SECSuccess;
}
