static OCSP_Entry* find_ocsp_entry(CYASSL_OCSP* ocsp, DecodedCert* cert)
{
OCSP_Entry* entry = ocsp->ocspList;
while (entry)
{
if (XMEMCMP(entry->issuerHash, cert->issuerHash, SHA_DIGEST_SIZE) == 0
&& XMEMCMP(entry->issuerKeyHash, cert->issuerKeyHash,
SHA_DIGEST_SIZE) == 0)
{
CYASSL_MSG("Found OCSP responder");
break;
}
else
{
entry = entry->next;
}
}
if (entry == NULL)
{
CYASSL_MSG("Add a new OCSP entry");
entry = (OCSP_Entry*)XMALLOC(sizeof(OCSP_Entry),
NULL, DYNAMIC_TYPE_OCSP_ENTRY);
if (entry != NULL)
{
InitOCSP_Entry(entry, cert);
entry->next = ocsp->ocspList;
ocsp->ocspList = entry;
}
}
return entry;
}
int CheckCertOCSP(CYASSL_OCSP* ocsp, DecodedCert* cert)
{
byte* ocspReqBuf = NULL;
int ocspReqSz = 2048;
byte* ocspRespBuf = NULL;
OcspRequest ocspRequest;
OcspResponse ocspResponse;
int result = -1;
OCSP_Entry* ocspe;
CertStatus* certStatus = NULL;
CertStatus newStatus;
const char *url;
int urlSz;
CYASSL_ENTER("CheckCertOCSP");
if (LockMutex(&ocsp->ocspLock) != 0) {
CYASSL_LEAVE("CheckCertOCSP", BAD_MUTEX_E);
return BAD_MUTEX_E;
}
ocspe = ocsp->ocspList;
while (ocspe) {
if (XMEMCMP(ocspe->issuerHash, cert->issuerHash, SHA_DIGEST_SIZE) == 0
&& XMEMCMP(ocspe->issuerKeyHash, cert->issuerKeyHash,
SHA_DIGEST_SIZE) == 0)
break;
else
ocspe = ocspe->next;
}
if (ocspe == NULL) {
ocspe = (OCSP_Entry*)XMALLOC(sizeof(OCSP_Entry),
NULL, DYNAMIC_TYPE_OCSP_ENTRY);
if (ocspe != NULL) {
InitOCSP_Entry(ocspe, cert);
ocspe->next = ocsp->ocspList;
ocsp->ocspList = ocspe;
}
else {
UnLockMutex(&ocsp->ocspLock);
CYASSL_LEAVE("CheckCertOCSP", MEMORY_ERROR);
return MEMORY_ERROR;
}
}
else {
certStatus = ocspe->status;
while (certStatus) {
if (certStatus->serialSz == cert->serialSz &&
XMEMCMP(certStatus->serial, cert->serial, cert->serialSz) == 0)
break;
else
certStatus = certStatus->next;
}
}
if (certStatus != NULL) {
if (!ValidateDate(certStatus->thisDate,
certStatus->thisDateFormat, BEFORE) ||
(certStatus->nextDate[0] == 0) ||
!ValidateDate(certStatus->nextDate,
certStatus->nextDateFormat, AFTER)) {
CYASSL_MSG("\tinvalid status date, looking up cert");
}
else {
result = xstat2err(certStatus->status);
UnLockMutex(&ocsp->ocspLock);
CYASSL_LEAVE("CheckCertOCSP", result);
return result;
}
}
UnLockMutex(&ocsp->ocspLock);
if (ocsp->cm->ocspUseOverrideURL) {
url = ocsp->cm->ocspOverrideURL;
if (url != NULL && url[0] != '\0')
urlSz = (int)XSTRLEN(url);
else
return OCSP_NEED_URL;
}
else if (cert->extAuthInfoSz != 0 && cert->extAuthInfo != NULL) {
url = (const char *)cert->extAuthInfo;
urlSz = cert->extAuthInfoSz;
}
else {
/* cert doesn't have extAuthInfo, assuming CERT_GOOD */
return 0;
}
ocspReqBuf = (byte*)XMALLOC(ocspReqSz, NULL, DYNAMIC_TYPE_IN_BUFFER);
if (ocspReqBuf == NULL) {
CYASSL_LEAVE("CheckCertOCSP", MEMORY_ERROR);
return MEMORY_ERROR;
}
InitOcspRequest(&ocspRequest, cert, ocsp->cm->ocspSendNonce,
ocspReqBuf, ocspReqSz);
ocspReqSz = EncodeOcspRequest(&ocspRequest);
if (ocsp->cm->ocspIOCb)
result = ocsp->cm->ocspIOCb(ocsp->cm->ocspIOCtx, url, urlSz,
ocspReqBuf, ocspReqSz, &ocspRespBuf);
if (result >= 0 && ocspRespBuf) {
XMEMSET(&newStatus, 0, sizeof(CertStatus));
InitOcspResponse(&ocspResponse, &newStatus, ocspRespBuf, result);
OcspResponseDecode(&ocspResponse);
if (ocspResponse.responseStatus != OCSP_SUCCESSFUL)
result = OCSP_LOOKUP_FAIL;
else {
if (CompareOcspReqResp(&ocspRequest, &ocspResponse) == 0) {
result = xstat2err(ocspResponse.status->status);
if (LockMutex(&ocsp->ocspLock) != 0)
result = BAD_MUTEX_E;
else {
if (certStatus != NULL)
/* Replace existing certificate entry with updated */
XMEMCPY(certStatus, &newStatus, sizeof(CertStatus));
else {
/* Save new certificate entry */
certStatus = (CertStatus*)XMALLOC(sizeof(CertStatus),
NULL, DYNAMIC_TYPE_OCSP_STATUS);
if (certStatus != NULL) {
XMEMCPY(certStatus, &newStatus, sizeof(CertStatus));
certStatus->next = ocspe->status;
ocspe->status = certStatus;
ocspe->totalStatus++;
}
}
UnLockMutex(&ocsp->ocspLock);
}
}
else
result = OCSP_LOOKUP_FAIL;
}
}
else
result = OCSP_LOOKUP_FAIL;
if (ocspReqBuf != NULL)
XFREE(ocspReqBuf, NULL, DYNAMIC_TYPE_IN_BUFFER);
if (ocspRespBuf != NULL && ocsp->cm->ocspRespFreeCb)
ocsp->cm->ocspRespFreeCb(ocsp->cm->ocspIOCtx, ocspRespBuf);
CYASSL_LEAVE("CheckCertOCSP", result);
return result;
}
