C++ (Cpp) KSI_TLVList_length示例

示例#1

文件： ksi_tlv_sample_test.c 项目： GuardTime/libksi

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;
}

示例#2

文件： publicationsfile.c 项目： GuardTime/libksi

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;
}

示例#3

文件： tlv_template.c 项目： khushil/libksi

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;
}

示例#4

文件： signature_builder.c 项目： GuardTime/libksi

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;
}