-
Notifications
You must be signed in to change notification settings - Fork 0
/
contractGatToken
196 lines (173 loc) · 8.67 KB
/
contractGatToken
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
pragma solidity ^0.4.13;
//date 1500114129 by Ournet International2022649
contract tokenGAT {
uint256 public totalContribution = 0;
uint256 public totalBonusTokensIssued = 0;
uint256 public totalSupply = 0;
function balanceOf(address _owner) constant returns (uint256 balance);
function transfer(address _to, uint256 _value) returns (bool success);
function transferFrom(address _from, address _to, uint256 _value) returns (bool success);
function approve(address _spender, uint256 _value) returns (bool success);
function allowance(address _owner, address _spender) constant returns (uint256 remaining);
//events for logging
event LogTransaction(address indexed _addres, uint256 value);
event Transfer(address indexed _from, address indexed _to, uint256 _value);
event Approval(address indexed _owner, address indexed _spender, uint256 _value);
}
/* ERC 20 token this funtion are also call when somebody or contract want transfer, send, u operate wiht our tokens*/
contract StandarTokentokenGAT is tokenGAT{
mapping (address => uint256) balances; //asociative array for associate address and its balance like a hashmapp in java
mapping (address => uint256 ) weirecives; //asociative array for associate address and its balance like a hashmapp in java
mapping (address => mapping (address => uint256)) allowed; // this store addres that are allowed for operate in this contract
function allowance(address _owner, address _spender) constant returns (uint256) {
return allowed[_owner][_spender];
}
function balanceOf(address _owner) constant returns (uint256 balance) {
return balances[_owner];
}
function transfer(address _to, uint256 _value) returns (bool success) {
if(msg.data.length < (2 * 32) + 4) { revert();} // mitigates the ERC20 short address attack
if (balances[msg.sender] >= _value && _value >= 0){
balances[msg.sender] -= _value; //substract balance from user that is transfering (who deploy or who executed it)
balances[_to] += _value; //add balance from user that is transfering (who deploy or who executed it)
Transfer(msg.sender, _to, _value); //login
return true;
}else
return false;
}
function transferFrom(address _from, address _to, uint256 _value) returns (bool success) {
if(msg.data.length < (3 * 32) + 4) { revert(); } // mitigates the ERC20 short address attack
if (balances[_from] >= _value && allowed[_from][msg.sender] >= _value && _value >= 0){
//add balance to destinate address
balances[_to] += _value;
//substract balance from source address
balances[_from] -= _value;
allowed[_from][msg.sender] -= _value;
//loggin
Transfer(_from, _to, _value);
return true;
} else
return false;
}
//put the addres in allowed mapping
function approve(address _spender, uint256 _value) returns (bool success) {
// mitigates the ERC20 spend/approval race condition
if (_value != 0 && allowed[msg.sender][_spender] != 0) { return false; }
allowed[msg.sender][_spender] = _value;
Approval(msg.sender, _spender, _value);
return true;
}
}
contract TokenICOGAT is StandarTokentokenGAT{
address owner = msg.sender;
//Token Metadata
function name() constant returns (string) { return "General Advertising Token"; }
function symbol() constant returns (string) { return "GAT"; }
uint256 public constant decimals = 18;
//ICO Parameters
bool public purchasingAllowed = false;
address public ethFoundDeposit; // deposit address for ETH for OurNet International
address public gatFoundDeposit; // deposit address for Brave International use and OurNet User Fund
uint public deadline; //epoch date to end of crowsale
uint public startline; //when crowsale start
uint public refundDeadLine; // peiorode avaible for get refound
uint public transactionCounter;//counter for calcucalate bonus
uint public etherReceived; // Number of Ether received
uint256 public constant gatFund = 250 * (10**6) * 10**decimals; // 250m GAT reserved for OurNet Intl use, early adopters incentive and ournNet employees team
uint256 public constant tokenExchangeRate = 9000; // 9000 GAT tokens per 1 ETH
uint256 public constant tokenCreationCap = 1000 * (10**6) * 10**decimals; //total of tokens issued
uint256 public constant tokenSellCap = 750 * (10**6) * 10**decimals; //maximun of gat tokens for sell
uint256 public constant tokenSaleMin = 17 * (10**6) * 10**decimals; //minimun goal
//constructor or contract
function TokenICOGAT(){
startline = now;
deadline = startline + 45 * 1 days;
refundDeadLine = deadline + 30 days;
ethFoundDeposit = owner;
gatFoundDeposit = owner;
balances[gatFoundDeposit] = gatFund; //deposit fondos for ourNet international
LogTransaction(gatFoundDeposit,gatFund); //login transaction
}
function bonusCalculate(uint256 amount) internal returns(uint256){
uint256 amounttmp = 0;
if (transactionCounter > 0 && transactionCounter <= 1000){
return amount / 2 ; // bonus 50%
}
if (transactionCounter > 1000 && transactionCounter <= 2000){
return amount / 5 ; // bonus 20%
}
if (transactionCounter > 2000 && transactionCounter <= 3000){
return amount / 10; // bonus 10%
}
if (transactionCounter > 3000 && transactionCounter <= 5000){
return amount / 20; // bonus 5%
}
return amounttmp;
}
function enablePurchasing() {
if (msg.sender != owner) { revert(); }
if(purchasingAllowed) {revert();}
purchasingAllowed = true;
}
function disablePurchasing() {
if (msg.sender != owner) { revert(); }
if(!purchasingAllowed) {revert();}
purchasingAllowed = false;
}
function getStats() constant returns (uint256, uint256, uint256, bool) {
return (totalContribution, totalSupply, totalBonusTokensIssued, purchasingAllowed);
}
// recive ethers funtion witout name is call every some body send ether
function() payable {
if (!purchasingAllowed) { revert(); }
if ((tokenCreationCap - (totalSupply + gatFund)) <= 0) { revert();}
if (msg.value == 0) { return; }
transactionCounter +=1;
totalContribution += msg.value;
uint256 bonusGiven = bonusCalculate(msg.value);
// Number of GAT sent to Ether contributors
uint256 tokensIssued = (msg.value * tokenExchangeRate) + (bonusGiven * tokenExchangeRate);
totalBonusTokensIssued += bonusGiven;
totalSupply += tokensIssued;
balances[msg.sender] += tokensIssued;
weirecives[msg.sender] += msg.value; // it is import for calculate refund witout token bonus
Transfer(address(this), msg.sender, tokensIssued);
}
// send excess of tokens when de ico end
function sendSurplusTokens() {
if (purchasingAllowed) { revert(); }
if (msg.sender != owner) { revert();}
uint256 excess = tokenCreationCap - (totalSupply + gatFund);
if(excess <= 0){revert();}
balances[gatFoundDeposit] += excess;
Transfer(address(this), gatFoundDeposit, excess);
}
function withdrawEtherHomeExternal() external{//Regarding security issues the first option is save ether in a online wallet, but if some bad happens, we will use local wallet as contingency plan
if(purchasingAllowed){revert();}
if (msg.sender != owner) { revert();}
ethFoundDeposit.transfer(this.balance); //send ether home
}
function withdrawEtherHomeLocal(address _ethHome) external{ // continegency plan
if(purchasingAllowed){revert();}
if (msg.sender != owner) { revert();}
_ethHome.transfer(this.balance); //send ether home
}
/*
* When tokenSaleMin is not reach:
* 1) donors call the "refund" function of the GATCrowdFundingToken contract
*/
function refund() public {
if(purchasingAllowed){revert();} // only refund after ico end
if(now >= refundDeadLine ){revert();} // only refund are available before ico end + 30 days
if((totalSupply - totalBonusTokensIssued) >= tokenSaleMin){revert();} // if we sould enough, no refund allow
if(msg.sender == ethFoundDeposit){revert();} // OurNet not entitled to a refund
uint256 gatVal= balances[msg.sender]; // get balance of who is getting from balances mapping
if(gatVal <=0) {revert();} //if dont have balnace sent no refund
// balances[msg.sender] = 0;//since donor can hold the tokes as souvenir do not update balance of who is getting refund in gatcontract
uint256 ethVal = weirecives[msg.sender]; //extract amount contribuited by sender without tokenbonus
LogTransaction(msg.sender,ethVal);//loggin transaction
msg.sender.transfer(ethVal);// send ether comeback
totalContribution -= ethVal;
weirecives[msg.sender] -= ethVal; // getrefound from weirecives
}
}