int SCT_set_source(SCT *sct, sct_source_t source)
{
sct->source = source;
switch (source) {
case SCT_SOURCE_TLS_EXTENSION:
case SCT_SOURCE_OCSP_STAPLED_RESPONSE:
return SCT_set_log_entry_type(sct, CT_LOG_ENTRY_TYPE_X509);
case SCT_SOURCE_X509V3_EXTENSION:
return SCT_set_log_entry_type(sct, CT_LOG_ENTRY_TYPE_PRECERT);
default: /* if we aren't sure, leave the log entry type alone */
return 1;
}
}
SCT *SCT_new_from_base64(unsigned char version, const char *logid_base64,
ct_log_entry_type_t entry_type, uint64_t timestamp,
const char *extensions_base64,
const char *signature_base64)
{
SCT *sct = SCT_new();
unsigned char *dec = NULL;
int declen;
if (sct == NULL) {
CTerr(CT_F_SCT_NEW_FROM_BASE64, ERR_R_MALLOC_FAILURE);
return NULL;
}
/*
* RFC6962 section 4.1 says we "MUST NOT expect this to be 0", but we
* can only construct SCT versions that have been defined.
*/
if (!SCT_set_version(sct, version)) {
CTerr(CT_F_SCT_NEW_FROM_BASE64, CT_R_SCT_UNSUPPORTED_VERSION);
goto err;
}
declen = ct_base64_decode(logid_base64, &dec);
if (declen < 0) {
CTerr(CT_F_SCT_NEW_FROM_BASE64, X509_R_BASE64_DECODE_ERROR);
goto err;
}
if (!SCT_set0_log_id(sct, dec, declen))
goto err;
dec = NULL;
declen = ct_base64_decode(extensions_base64, &dec);
if (declen < 0) {
CTerr(CT_F_SCT_NEW_FROM_BASE64, X509_R_BASE64_DECODE_ERROR);
goto err;
}
SCT_set0_extensions(sct, dec, declen);
dec = NULL;
declen = ct_base64_decode(signature_base64, &dec);
if (declen < 0) {
CTerr(CT_F_SCT_NEW_FROM_BASE64, X509_R_BASE64_DECODE_ERROR);
goto err;
}
if (o2i_SCT_signature(sct, (const unsigned char **)&dec, declen) <= 0)
goto err;
OPENSSL_free(dec);
dec = NULL;
SCT_set_timestamp(sct, timestamp);
if (!SCT_set_log_entry_type(sct, entry_type))
goto err;
return sct;
err:
OPENSSL_free(dec);
SCT_free(sct);
return NULL;
}
