add some parameters validation for hddpool

contracts/hddpool/hddpool.cpp

@@ -882,6 +882,8 @@ void hddpool::check_bp_account(account_name bpacc, uint64_t id, bool isCheckId)
 void hddpool::sethddprice(uint64_t price) {
    require_auth(_self);
 
+   eosio_assert( price > 0, "invalid price" );
+
    gparams_singleton _gparams(_self, _self);
    hdd_global_param  _gparmas_state;
    if (_gparams.exists()) {
@@ -897,6 +899,8 @@ void hddpool::sethddprice(uint64_t price) {
 void hddpool::setdrdratio(uint64_t ratio) {
    require_auth(_self);
 
+   eosio_assert( ratio >= 10000, "invalid deduplication ratio" );
+
    gparams_singleton _gparams(_self, _self);
    hdd_global_param  _gparmas_state;
    if (_gparams.exists()) {
@@ -919,6 +923,8 @@ void hddpool::setytaprice(uint64_t price, uint8_t acc_type) {
       require_auth( _self );
    }
 
+   eosio_assert( price > 0, "invalid price" );
+
    gparams_singleton _gparams(_self, _self);
    hdd_global_param  _gparmas_state;
    if (_gparams.exists()) {
@@ -992,6 +998,8 @@ void hddpool::setdrratio(uint64_t ratio, uint8_t acc_type) {
       require_auth( _self );
    }
 
+   eosio_assert( ratio > 0 && ratio <= 10000, "invalid deduplication distribute ratio" );
+
    gparams_singleton _gparams(_self, _self);
    hdd_global_param  _gparmas_state;
    if (_gparams.exists()) {