static int
__pmCertificateTimestamp(SECItem *vtime, char *buffer, size_t size)
{
PRExplodedTime exploded;
SECStatus secsts;
int64 itime;
switch (vtime->type) {
case siUTCTime:
secsts = DER_UTCTimeToTime(&itime, vtime);
break;
case siGeneralizedTime:
secsts = DER_GeneralizedTimeToTime(&itime, vtime);
break;
default:
return -EINVAL;
}
if (secsts != SECSuccess)
return __pmSecureSocketsError(PR_GetError());
/* Convert to local time */
PR_ExplodeTime(itime, PR_GMTParameters, &exploded);
if (!PR_FormatTime(buffer, size, "%a %b %d %H:%M:%S %Y", &exploded))
return __pmSecureSocketsError(PR_GetError());
return 0;
}
SECStatus CERT_FindInvalidDateExten (CERTCrl *crl, int64 *value)
{
SECItem encodedExtenValue;
SECItem decodedExtenValue = {siBuffer,0};
SECStatus rv;
encodedExtenValue.data = decodedExtenValue.data = NULL;
encodedExtenValue.len = decodedExtenValue.len = 0;
rv = cert_FindExtension
(crl->extensions, SEC_OID_X509_INVALID_DATE, &encodedExtenValue);
if ( rv != SECSuccess )
return (rv);
rv = SEC_ASN1DecodeItem (NULL, &decodedExtenValue,
SEC_ASN1_GET(SEC_GeneralizedTimeTemplate),
&encodedExtenValue);
if (rv == SECSuccess)
rv = DER_GeneralizedTimeToTime(value, &encodedExtenValue);
PORT_Free (decodedExtenValue.data);
PORT_Free (encodedExtenValue.data);
return (rv);
}
SECStatus
sv_PrintInvalidDateExten(FILE *out, SECItem *value, char *msg)
{
SECItem decodedValue;
SECStatus rv;
PRTime invalidTime;
char *formattedTime = NULL;
decodedValue.data = NULL;
rv = SEC_ASN1DecodeItem(NULL, &decodedValue,
SEC_ASN1_GET(SEC_GeneralizedTimeTemplate),
value);
if (rv == SECSuccess) {
rv = DER_GeneralizedTimeToTime(&invalidTime, &decodedValue);
if (rv == SECSuccess) {
formattedTime = CERT_GenTime2FormattedAscii(invalidTime, "%a %b %d %H:%M:%S %Y");
fprintf(out, "%s: %s\n", msg, formattedTime);
PORT_Free(formattedTime);
}
}
PORT_Free(decodedValue.data);
return (rv);
}
int
main()
{
SECItem badTime;
PRTime prtime;
SECStatus rv;
int error;
PRBool failed = PR_FALSE;
/* A UTCTime string with an embedded null. */
badTime.type = siBuffer;
badTime.data = (unsigned char *)"091219000000Z\0junkjunkjunkjunkjunkjunk";
badTime.len = 38;
rv = DER_UTCTimeToTime(&prtime, &badTime);
if (rv == SECSuccess) {
fprintf(stderr, "DER_UTCTimeToTime should have failed but "
"succeeded\n");
failed = PR_TRUE;
} else {
error = PORT_GetError();
if (error != SEC_ERROR_INVALID_TIME) {
fprintf(stderr, "DER_UTCTimeToTime failed with error %d, "
"expected error %d\n",
error, SEC_ERROR_INVALID_TIME);
failed = PR_TRUE;
}
}
/* A UTCTime string with junk after a valid date/time. */
badTime.type = siBuffer;
badTime.data = (unsigned char *)"091219000000Zjunk";
badTime.len = 17;
rv = DER_UTCTimeToTime(&prtime, &badTime);
if (rv == SECSuccess) {
fprintf(stderr, "DER_UTCTimeToTime should have failed but "
"succeeded\n");
failed = PR_TRUE;
} else {
error = PORT_GetError();
if (error != SEC_ERROR_INVALID_TIME) {
fprintf(stderr, "DER_UTCTimeToTime failed with error %d, "
"expected error %d\n",
error, SEC_ERROR_INVALID_TIME);
failed = PR_TRUE;
}
}
/* A GeneralizedTime string with an embedded null. */
badTime.type = siBuffer;
badTime.data = (unsigned char *)"20091219000000Z\0junkjunkjunkjunkjunkjunk";
badTime.len = 40;
rv = DER_GeneralizedTimeToTime(&prtime, &badTime);
if (rv == SECSuccess) {
fprintf(stderr, "DER_GeneralizedTimeToTime should have failed but "
"succeeded\n");
failed = PR_TRUE;
} else {
error = PORT_GetError();
if (error != SEC_ERROR_INVALID_TIME) {
fprintf(stderr, "DER_GeneralizedTimeToTime failed with error %d, "
"expected error %d\n",
error, SEC_ERROR_INVALID_TIME);
failed = PR_TRUE;
}
}
/* A GeneralizedTime string with junk after a valid date/time. */
badTime.type = siBuffer;
badTime.data = (unsigned char *)"20091219000000Zjunk";
badTime.len = 19;
rv = DER_GeneralizedTimeToTime(&prtime, &badTime);
if (rv == SECSuccess) {
fprintf(stderr, "DER_GeneralizedTimeToTime should have failed but "
"succeeded\n");
failed = PR_TRUE;
} else {
error = PORT_GetError();
if (error != SEC_ERROR_INVALID_TIME) {
fprintf(stderr, "DER_GeneralizedTimeToTime failed with error %d, "
"expected error %d\n",
error, SEC_ERROR_INVALID_TIME);
failed = PR_TRUE;
}
}
if (failed) {
fprintf(stderr, "FAIL\n");
return 1;
}
printf("PASS\n");
return 0;
}
/*
* FUNCTION: pkix_pl_OcspResponse_VerifySignature
* DESCRIPTION:
*
* This function verifies the ocspResponse signature field in the OcspResponse
* pointed to by "response", storing PKIX_TRUE at "pPassed" if verification
* is successful and PKIX_FALSE otherwise. If verification is unsuccessful an
* error code (an enumeration of type SECErrorCodes) is stored at *pReturnCode.
*
* PARAMETERS
* "response"
* The address of the OcspResponse whose signature field is to be
* retrieved. Must be non-NULL.
* "cert"
* The address of the Cert for which the OCSP query was made. Must be
* non-NULL.
* "procParams"
* Address of ProcessingParams used to initialize the ExpirationChecker
* and TargetCertChecker. Must be non-NULL.
* "pPassed"
* Address at which the Boolean result is stored. Must be non-NULL.
* "pNBIOContext"
* Address at which the NBIOContext is stored indicating whether the
* checking is complete. Must be non-NULL.
* "plContext"
* Platform-specific context pointer.
* THREAD SAFETY:
* Thread Safe (see Thread Safety Definitions in Programmer's Guide)
* RETURNS:
* Returns NULL if the function succeeds.
* Returns an OcspResponse Error if the function fails in a non-fatal way.
* Returns a Fatal Error if the function fails in an unrecoverable way.
*/
PKIX_Error *
pkix_pl_OcspResponse_VerifySignature(
PKIX_PL_OcspResponse *response,
PKIX_PL_Cert *cert,
PKIX_ProcessingParams *procParams,
PKIX_Boolean *pPassed,
void **pNBIOContext,
void *plContext)
{
SECStatus rv = SECFailure;
CERTOCSPResponse *nssOCSPResponse = NULL;
CERTCertificate *issuerCert = NULL;
PKIX_BuildResult *buildResult = NULL;
void *nbio = NULL;
void *state = NULL;
ocspSignature *signature = NULL;
ocspResponseData *tbsData = NULL;
SECItem *tbsResponseDataDER = NULL;
PKIX_ENTER(OCSPRESPONSE, "pkix_pl_OcspResponse_VerifySignature");
PKIX_NULLCHECK_FOUR(response, cert, pPassed, pNBIOContext);
nbio = *pNBIOContext;
*pNBIOContext = NULL;
nssOCSPResponse = response->nssOCSPResponse;
if (nssOCSPResponse == NULL) {
PORT_SetError(SEC_ERROR_OCSP_MALFORMED_RESPONSE);
goto cleanup;
}
tbsData =
ocsp_GetResponseData(nssOCSPResponse, &tbsResponseDataDER);
signature = ocsp_GetResponseSignature(nssOCSPResponse);
/* Are we resuming after a WOULDBLOCK response? */
if (nbio == NULL) {
/* No, this is a new query */
issuerCert = CERT_FindCertIssuer(cert->nssCert, PR_Now(),
certUsageAnyCA);
/*
* If this signature has already gone through verification,
* just return the cached result.
*/
if (signature->wasChecked) {
if (signature->status == SECSuccess) {
response->signerCert =
CERT_DupCertificate(signature->cert);
} else {
PORT_SetError(signature->failureReason);
goto cleanup;
}
}
response->signerCert =
ocsp_GetSignerCertificate(response->handle, tbsData,
signature, issuerCert);
if (response->signerCert == NULL) {
PORT_SetError(SEC_ERROR_UNKNOWN_SIGNER);
goto cleanup;
}
PKIX_CHECK(
PKIX_PL_Cert_CreateFromCERTCertificate(response->signerCert,
&(response->pkixSignerCert),
plContext),
PKIX_CERTCREATEWITHNSSCERTFAILED);
/*
* We could mark this true at the top of this function, or
* always below at "finish", but if the problem was just that
* we could not find the signer's cert, leave that as if the
* signature hasn't been checked. Maybe a subsequent call will
* have better luck.
*/
signature->wasChecked = PR_TRUE;
/*
* We are about to verify the signer certificate; we need to
* specify *when* that certificate must be valid -- for our
* purposes we expect it to be valid when the response was
* signed. The value of "producedAt" is the signing time.
*/
rv = DER_GeneralizedTimeToTime(&response->producedAt,
&tbsData->producedAt);
if (rv != SECSuccess) {
PORT_SetError(SEC_ERROR_OCSP_MALFORMED_RESPONSE);
goto cleanup;
}
/*
* We need producedAtDate and pkixSignerCert if we are calling a
* user-supplied verification function. Let's put their
* creation before the code that gets repeated when
* non-blocking I/O is used.
*/
PKIX_CHECK(
pkix_pl_Date_CreateFromPRTime((PRTime)response->producedAt,
&(response->producedAtDate),
plContext),
PKIX_DATECREATEFROMPRTIMEFAILED);
}
/*
* Just because we have a cert does not mean it is any good; check
* it for validity, trust and usage. Use the caller-supplied
* verification function, if one was supplied.
*/
if (ocsp_CertIsOCSPDefaultResponder(response->handle,
response->signerCert)) {
rv = SECSuccess;
} else {
SECCertUsage certUsage;
if (CERT_IsCACert(response->signerCert, NULL)) {
certUsage = certUsageAnyCA;
} else {
certUsage = certUsageStatusResponder;
}
PKIX_CHECK_ONLY_FATAL(
pkix_pl_OcspResponse_VerifyResponse(response, procParams,
certUsage, &state,
&buildResult, &nbio,
plContext),
PKIX_CERTVERIFYKEYUSAGEFAILED);
if (pkixTempErrorReceived) {
rv = SECFailure;
goto cleanup;
}
if (nbio != NULL) {
*pNBIOContext = nbio;
goto cleanup;
}
}
rv = ocsp_VerifyResponseSignature(response->signerCert, signature,
tbsResponseDataDER, NULL);
cleanup:
if (rv == SECSuccess) {
*pPassed = PKIX_TRUE;
} else {
*pPassed = PKIX_FALSE;
}
if (signature) {
if (signature->wasChecked) {
signature->status = rv;
}
if (rv != SECSuccess) {
signature->failureReason = PORT_GetError();
if (response->signerCert != NULL) {
CERT_DestroyCertificate(response->signerCert);
response->signerCert = NULL;
}
} else {
/* Save signer's certificate in signature. */
signature->cert = CERT_DupCertificate(response->signerCert);
}
}
if (issuerCert)
CERT_DestroyCertificate(issuerCert);
PKIX_RETURN(OCSPRESPONSE);
}
