sangfansh

#include <stdio.h>
#include <cstring>

#include "utils.h"
#include "app.h"
#include "wallet.h"
#include "enclave.h"

void info_print(const char* str) {
    printf("[INFO] %s\n", str);

sangfansh

int ocall_is_wallet(void) {
    ifstream file(WALLET_FILE, ios::in | ios::binary);
    if (file.fail()) {return 0;} // failure means no wallet found
    file.close();
    return 1;
}

sangfansh

int ocall_load_wallet(uint8_t* sealed_data, const size_t sealed_size) {
    ifstream file(WALLET_FILE, ios::in | ios::binary);
    if (file.fail()) {return 1;}
    file.read((char*) sealed_data, sealed_size);
    file.close();
    return 0;
}

sangfansh

int ocall_save_wallet(const uint8_t* sealed_data, const size_t sealed_size) {
    ofstream file(WALLET_FILE, ios::out | ios::binary);
    if (file.fail()) {return 1;}
    file.write((const char*) sealed_data, sealed_size);
    file.close();
    return 0;
}

sangfansh

int ecall_remove_item(const char* master_password, const int index) {

	//
	// OVERVIEW: 
	//	1. check index bounds
	//	2. [ocall] load wallet
	//	3. unseal wallet
	//	4. verify master-password
	//	5. remove item from the wallet
	//	6. seal wallet

sangfansh

int ecall_add_item(const char* master_password, const item_t* item, const size_t item_size) {

	//
	// OVERVIEW: 
	//	1. [ocall] load wallet
	//	2. unseal wallet
	//	3. verify master-password
	//	4. check input length
	//	5. add item to the wallet
	//	6. seal wallet

sangfansh

int ecall_change_master_password(const char* old_password, const char* new_password) {

	//
	// OVERVIEW: 
	//	1. check password policy
	//	2. [ocall] load wallet
	// 	3. unseal wallet
	//	4. verify old password
	//	5. update password
	//	6. seal wallet

sangfansh

int ecall_show_wallet(const char* master_password, wallet_t* wallet, size_t wallet_size) {

	//
	// OVERVIEW: 
	//	1. [ocall] load wallet
	// 	2. unseal wallet
	//	3. verify master-password
	//	4. return wallet to app
	//	5. exit enclave
	//

sangfansh

int ecall_create_wallet(const char* master_password) {

	//
	// OVERVIEW: 
	//	1. check password policy
	//	2. [ocall] abort if wallet already exist
	//	3. create wallet 
	//	4. seal wallet
	//	5. [ocall] save wallet
	//	6. exit enclave

sangfansh

enclave {

    // includes
    include "wallet.h"


    // define ECALLs
    trusted {

        public int ecall_create_wallet(