int KSI_PublicationRecord_clone(const KSI_PublicationRecord *rec, KSI_PublicationRecord **clone){
int res = KSI_UNKNOWN_ERROR;
KSI_PublicationRecord *tmp = NULL;
size_t i = 0;
if (rec == NULL) {
res = KSI_INVALID_ARGUMENT;
goto cleanup;
}
KSI_ERR_clearErrors(rec->ctx);
if (clone == NULL) {
KSI_pushError(rec->ctx, res = KSI_INVALID_ARGUMENT, NULL);
goto cleanup;
}
res = KSI_PublicationRecord_new(rec->ctx, &tmp);
if (res != KSI_OK) {
KSI_pushError(rec->ctx, res, NULL);
goto cleanup;
}
/*Copy publication references*/
res = KSI_Utf8StringList_new(&(tmp->publicationRef));
if (res != KSI_OK) goto cleanup;
for (i = 0; i < KSI_Utf8StringList_length(rec->publicationRef); i++){
KSI_Utf8String *str = NULL;
KSI_Utf8String *ref = NULL;
res = KSI_Utf8StringList_elementAt(rec->publicationRef, i, &str);
if (res != KSI_OK) {
KSI_pushError(rec->ctx, res, NULL);
goto cleanup;
}
res = KSI_Utf8StringList_append(tmp->publicationRef, ref = KSI_Utf8String_ref(str));
if (res != KSI_OK) {
/* Cleanup the reference. */
KSI_Utf8String_ref(ref);
KSI_pushError(rec->ctx, res, NULL);
goto cleanup;
}
}
/*Copy publication data*/
res = KSI_PublicationData_new(rec->ctx, &(tmp->publishedData));
if (res != KSI_OK) {
KSI_pushError(rec->ctx, res, NULL);
goto cleanup;
}
tmp->publishedData->ctx = rec->ctx;
tmp->publishedData->imprint = KSI_DataHash_ref(rec->publishedData->imprint);
tmp->publishedData->time = KSI_Integer_ref(rec->publishedData->time);
*clone = tmp;
tmp = NULL;
res = KSI_OK;
cleanup:
KSI_PublicationRecord_free(tmp);
return res;
}
/**
* This function extends the signature to the given publication.
* \param[in] sig Initial signature.
* \param[in] pubStr Null-terminated c string of the publication.
* \param[out] ext Pointer to the receiving pointer to the extended signature.
* \return Returns KSI_OK if successful.
*/
static int extendToPublication(KSI_Signature *sig, const char *pubStr, KSI_Signature **ext) {
int res = KSI_UNKNOWN_ERROR;
/* Only the published data. */
KSI_PublicationData *pubData = NULL;
/* Published data and the references to the actual publications. */
KSI_PublicationRecord *pubRec = NULL;
/* Publication time. */
KSI_Integer *pubTime = NULL;
/* Signature signing time. */
KSI_Integer *signTime = NULL;
/* Parse the publications string. */
res = KSI_PublicationData_fromBase32(ksi, pubStr, &pubData);
if (res != KSI_OK) {
fprintf(stderr, "Invalid publication: '%s'\n", pubStr);
goto cleanup;
}
/* Verify the publication is newer than the signature. */
res = KSI_Signature_getSigningTime(sig, &signTime);
if (res != KSI_OK) goto cleanup;
res = KSI_PublicationData_getTime(pubData, &pubTime);
if (res != KSI_OK) goto cleanup;
if (KSI_Integer_compare(signTime, pubTime) > 0) {
fprintf(stderr, "Signature created after publication.\n");
res = KSI_INVALID_ARGUMENT;
goto cleanup;
}
/* Create a publication record. */
res = KSI_PublicationRecord_new(ksi, &pubRec);
if (res != KSI_OK) goto cleanup;
/* Set the published data value. */
res = KSI_PublicationRecord_setPublishedData(pubRec, pubData);
if (res != KSI_OK) goto cleanup;
/* The pointer will be free by KSI_PublicatioinRecord_free. */
pubData = NULL;
/* NB! If the user wants to store the extended signature, some publication references should
* be added to the publication reference. As we are going to discard the signature after
* verification, the references are not important. */
/* Extend the signature to the publication. */
res = KSI_Signature_extend(sig, ksi, pubRec, ext);
if (res != KSI_OK) {
fprintf(stderr, "Unable to to extend the signature to the given publication: '%s'\n", pubStr);
goto cleanup;
}
res = KSI_OK;
cleanup:
/* We can cleanup the values. */
KSI_PublicationData_free(pubData);
KSI_PublicationRecord_free(pubRec);
return res;
}
