static int parseStructure(KSI_TLV *tlv, int indent) {
int res;
KSI_TLV *nested = NULL;
KSI_LIST(KSI_TLV) *list = NULL;
size_t i;
KSI_Utf8String *utf = NULL;
KSI_Integer *integer = NULL;
KSI_OctetString *octet = NULL;
switch (KSI_TLV_getTag(tlv)) {
case 0x01:
/* Cast as numeric TLV */
/* Parse number */
res = KSI_Integer_fromTlv(tlv, &integer);
if (res != KSI_OK) goto cleanup;
break;
case 0x02:
/* Cast as string TLV */
res = KSI_Utf8String_fromTlv(tlv, &utf);
if (res != KSI_OK) goto cleanup;
break;
case 0x03:
case 0x1003:
res = KSI_TLV_getNestedList(tlv, &list);
if (res != KSI_OK) goto cleanup;
/* Parse nested */
for (i = 0; i < KSI_TLVList_length(list); i++) {
res = KSI_TLVList_elementAt(list, i, &nested);
if (res != KSI_OK) goto cleanup;
if (nested == NULL) break;
res = parseStructure(nested, indent);
if (res != KSI_OK) goto cleanup;
}
break;
case 0x04:
/* Cast as octet string*/
res = KSI_OctetString_fromTlv(tlv, &octet);
if (res != KSI_OK) goto cleanup;
break;
default:
res = KSI_INVALID_FORMAT;
goto cleanup;
}
cleanup:
KSI_OctetString_free(octet);
KSI_Utf8String_free(utf);
KSI_Integer_free(integer);
return res;
}
static int publicationsFileTLV_getSignatureTLVLength(KSI_TLV *pubFileTlv, size_t *len) {
int res;
KSI_TLVList *list = NULL;
KSI_TLV *tlvSig = NULL;
const unsigned char *raw = NULL;
size_t raw_len;
size_t sig_len;
KSI_CTX *ctx = NULL;
if (pubFileTlv == NULL && len == NULL) {
KSI_pushError(ctx, res = KSI_INVALID_ARGUMENT, NULL);
goto cleanup;
}
ctx = KSI_TLV_getCtx(pubFileTlv);
KSI_ERR_clearErrors(ctx);
res = KSI_TLV_getNestedList(pubFileTlv, &list);
if (res != KSI_OK) {
KSI_pushError(ctx, res, NULL);
goto cleanup;
}
res = KSI_TLVList_elementAt(list, KSI_TLVList_length(list) - 1, &tlvSig);
if (res != KSI_OK) {
KSI_pushError(ctx, res, NULL);
goto cleanup;
}
if (KSI_TLV_getTag(tlvSig) != 0x704) {
KSI_pushError(ctx, res, "Last TLV in publications file must be signature (0x704)");
goto cleanup;
}
res = KSI_TLV_getRawValue(tlvSig, &raw, &raw_len);
if (res != KSI_OK) {
KSI_pushError(ctx, res, NULL);
goto cleanup;
}
sig_len = raw_len;
sig_len += 4;
*len = sig_len;
cleanup:
return res;
}
static int TLVListIterator_next(TLVListIterator *iter, KSI_TLV **tlv) {
int res = KSI_UNKNOWN_ERROR;
KSI_TLV *next = NULL;
if (iter == NULL) {
res = KSI_INVALID_ARGUMENT;
goto cleanup;
}
if (iter->idx < KSI_TLVList_length(iter->list)) {
res = KSI_TLVList_elementAt(iter->list, iter->idx, &next);
if (res != KSI_OK) goto cleanup;
iter->idx++;
}
*tlv = next;
res = KSI_OK;
cleanup:
return res;
}
KSI_END_TLV_TEMPLATE
static int replaceCalendarChain(KSI_Signature *sig, KSI_CalendarHashChain *calendarHashChain) {
int res;
KSI_DataHash *aggrOutputHash = NULL;
KSI_TLV *oldCalChainTlv = NULL;
KSI_TLV *newCalChainTlv = NULL;
KSI_LIST(KSI_TLV) *nestedList = NULL;
size_t i;
if (sig == NULL || calendarHashChain == NULL) {
res = KSI_INVALID_ARGUMENT;
goto cleanup;
}
KSI_ERR_clearErrors(sig->ctx);
res = KSI_TLV_getNestedList(sig->baseTlv, &nestedList);
if (res != KSI_OK) {
KSI_pushError(sig->ctx, res, NULL);
goto cleanup;
}
if (sig->calendarChain != NULL) {
for (i = 0; i < KSI_TLVList_length(nestedList); i++) {
res = KSI_TLVList_elementAt(nestedList,i, &oldCalChainTlv);
if (res != KSI_OK) {
KSI_pushError(sig->ctx, res, NULL);
goto cleanup;
}
if (oldCalChainTlv == NULL) {
KSI_pushError(sig->ctx, res = KSI_INVALID_SIGNATURE, "Signature TLV element missing.");
goto cleanup;
}
if (KSI_TLV_getTag(oldCalChainTlv) == 0x0802) break;
}
}
res = KSI_TLV_new(sig->ctx, 0x0802, 0, 0, &newCalChainTlv);
if (res != KSI_OK) {
KSI_pushError(sig->ctx, res, NULL);
goto cleanup;
}
res = KSI_TlvTemplate_construct(sig->ctx, newCalChainTlv, calendarHashChain, KSI_TLV_TEMPLATE(KSI_CalendarHashChain));
if (res != KSI_OK) {
KSI_pushError(sig->ctx, res, NULL);
goto cleanup;
}
res = (sig->calendarChain == NULL) ?
/* In case there is no calendar hash chain attached, append a new one. */
KSI_TLV_appendNestedTlv(sig->baseTlv, newCalChainTlv) :
/* Otherwise replace the calendar hash chain. */
KSI_TLV_replaceNestedTlv(sig->baseTlv, oldCalChainTlv, newCalChainTlv);
if (res != KSI_OK) {
KSI_pushError(sig->ctx, res, NULL);
goto cleanup;
}
newCalChainTlv = NULL;
/* The memory was freed within KSI_TLV_replaceNestedTlv. */
oldCalChainTlv = NULL;
KSI_CalendarHashChain_free(sig->calendarChain);
sig->calendarChain = calendarHashChain;
res = KSI_OK;
cleanup:
KSI_nofree(nestedList);
KSI_DataHash_free(aggrOutputHash);
KSI_TLV_free(newCalChainTlv);
return res;
}