Initial import

src_common/ethUstream.h

@@ -0,0 +1,80 @@
+/*******************************************************************************
+*   Ledger Blue
+*   (c) 2016 Ledger
+*
+*  Licensed under the Apache License, Version 2.0 (the "License");
+*  you may not use this file except in compliance with the License.
+*  You may obtain a copy of the License at
+*
+*      http://www.apache.org/licenses/LICENSE-2.0
+*
+*  Unless required by applicable law or agreed to in writing, software
+*  distributed under the License is distributed on an "AS IS" BASIS,
+*  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+*  See the License for the specific language governing permissions and
+*  limitations under the License.
+********************************************************************************/
+
+#include "os.h"
+#include "cx.h"
+#include <stdbool.h>
+#include "app_cx_sha3.h"
+
+struct txContext_t;
+
+typedef bool (*ustreamProcess_t)(struct txContext_t *context);
+
+typedef enum rlpTxField_e {
+    TX_RLP_NONE = 0,
+    TX_RLP_CONTENT,
+    TX_RLP_NONCE,
+    TX_RLP_GASPRICE,
+    TX_RLP_STARTGAS,
+    TX_RLP_TO,
+    TX_RLP_VALUE,
+    TX_RLP_DATA,
+    TX_RLP_DONE
+} rlpTxField_e;
+
+typedef enum parserStatus_e {
+    USTREAM_PROCESSING,
+    USTREAM_FINISHED,
+    USTREAM_FAULT
+} parserStatus_e;
+
+typedef struct txInt256_t {
+    uint8_t value[32];
+    uint8_t length;
+} txInt256_t;
+
+typedef struct txContent_t {
+    txInt256_t gasprice;
+    txInt256_t startgas;
+    txInt256_t value;
+    uint8_t destination[20];
+} txContent_t;
+
+typedef struct txContext_t {
+    rlpTxField_e currentField;
+    app_cx_sha3_t *sha3;
+    uint32_t currentFieldLength;
+    uint32_t currentFieldPos;
+    bool currentFieldIsList;
+    bool processingField;
+    bool fieldSingleByte;
+    uint32_t dataLength;
+    uint8_t rlpBuffer[5];
+    uint32_t rlpBufferPos;
+    uint8_t *workBuffer;
+    uint32_t commandLength;
+    ustreamProcess_t customProcessor;
+    txContent_t *content;
+    void *extra;
+} txContext_t;
+
+void initTx(txContext_t *context, app_cx_sha3_t *sha3, txContent_t *content,
+            ustreamProcess_t customProcessor, void *extra);
+parserStatus_e processTx(txContext_t *context, uint8_t *buffer,
+                         uint32_t length);
+void copyTxData(txContext_t *context, uint8_t *out, uint32_t length);
+uint8_t readTxByte(txContext_t *context);