-
Notifications
You must be signed in to change notification settings - Fork 8
/
ZethrBankroll.sol
848 lines (743 loc) · 27.6 KB
/
ZethrBankroll.sol
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
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
pragma solidity ^0.4.23;
/**
https://zethr.io https://zethr.io https://zethr.io https://zethr.io https://zethr.io
███████╗███████╗████████╗██╗ ██╗██████╗
╚══███╔╝██╔════╝╚══██╔══╝██║ ██║██╔══██╗
███╔╝ █████╗ ██║ ███████║██████╔╝
███╔╝ ██╔══╝ ██║ ██╔══██║██╔══██╗
███████╗███████╗ ██║ ██║ ██║██║ ██║
╚══════╝╚══════╝ ╚═╝ ╚═╝ ╚═╝╚═╝ ╚═╝
.------..------. .------..------..------. .------..------..------..------..------.
|B.--. ||E.--. |.-. |T.--. ||H.--. ||E.--. |.-. |H.--. ||O.--. ||U.--. ||S.--. ||E.--. |
| :(): || (\/) (( )) | :/\: || :/\: || (\/) (( )) | :/\: || :/\: || (\/) || :/\: || (\/) |
| ()() || :\/: |'-.-.| (__) || (__) || :\/: |'-.-.| (__) || :\/: || :\/: || :\/: || :\/: |
| '--'B|| '--'E| (( )) '--'T|| '--'H|| '--'E| (( )) '--'H|| '--'O|| '--'U|| '--'S|| '--'E|
`------'`------' '-'`------'`------'`------' '-'`------'`------'`------'`------'`------'
An interactive, variable-dividend rate contract with an ICO-capped price floor and collectibles.
Bankroll contract, containing tokens purchased from all dividend-card profit and ICO dividends.
Acts as token repository for games on the Zethr platform.
Credits
=======
Analysis:
blurr
Randall
Contract Developers:
Etherguy
klob
Norsefire
Front-End Design:
cryptodude
oguzhanox
TropicalRogue
**/
contract ZTHInterface {
function buyAndSetDivPercentage(address _referredBy, uint8 _divChoice, string providedUnhashedPass) public payable returns (uint);
function balanceOf(address who) public view returns (uint);
function transfer(address _to, uint _value) public returns (bool);
function transferFrom(address _from, address _toAddress, uint _amountOfTokens) public returns (bool);
function exit() public;
function sell(uint amountOfTokens) public;
function withdraw(address _recipient) public;
}
contract ERC223Receiving {
function tokenFallback(address _from, uint _amountOfTokens, bytes _data) public returns (bool);
}
contract ZethrBankroll is ERC223Receiving {
using SafeMath for uint;
/*=================================
= EVENTS =
=================================*/
event Confirmation(address indexed sender, uint indexed transactionId);
event Revocation(address indexed sender, uint indexed transactionId);
event Submission(uint indexed transactionId);
event Execution(uint indexed transactionId);
event ExecutionFailure(uint indexed transactionId);
event Deposit(address indexed sender, uint value);
event OwnerAddition(address indexed owner);
event OwnerRemoval(address indexed owner);
event WhiteListAddition(address indexed contractAddress);
event WhiteListRemoval(address indexed contractAddress);
event RequirementChange(uint required);
event DevWithdraw(uint amountTotal, uint amountPerPerson);
event EtherLogged(uint amountReceived, address sender);
event BankrollInvest(uint amountReceived);
event DailyTokenAdmin(address gameContract);
event DailyTokensSent(address gameContract, uint tokens);
event DailyTokensReceived(address gameContract, uint tokens);
/*=================================
= WITHDRAWAL CONSTANTS =
=================================*/
uint constant public MAX_OWNER_COUNT = 10;
uint constant public MAX_WITHDRAW_PCT_DAILY = 15;
uint constant public MAX_WITHDRAW_PCT_TX = 5;
uint constant internal resetTimer = 1 days;
/*=================================
= ZTH INTERFACE =
=================================*/
address internal zethrAddress;
ZTHInterface public ZTHTKN;
/*=================================
= VARIABLES =
=================================*/
mapping (uint => Transaction) public transactions;
mapping (uint => mapping (address => bool)) public confirmations;
mapping (address => bool) public isOwner;
mapping (address => bool) public isWhitelisted;
mapping (address => uint) public dailyTokensPerContract;
address internal divCardAddress;
address[] public owners;
address[] public whiteListedContracts;
uint public required;
uint public transactionCount;
uint internal dailyResetTime;
uint internal dailyTknLimit;
uint internal tknsDispensedToday;
bool internal reEntered = false;
/*=================================
= CUSTOM CONSTRUCTS =
=================================*/
struct Transaction {
address destination;
uint value;
bytes data;
bool executed;
}
struct TKN {
address sender;
uint value;
}
/*=================================
= MODIFIERS =
=================================*/
modifier onlyWallet() {
if (msg.sender != address(this))
revert();
_;
}
modifier contractIsNotWhiteListed(address contractAddress) {
if (isWhitelisted[contractAddress])
revert();
_;
}
modifier contractIsWhiteListed(address contractAddress) {
if (!isWhitelisted[contractAddress])
revert();
_;
}
modifier isAnOwner() {
address caller = msg.sender;
if (!isOwner[caller])
revert();
_;
}
modifier ownerDoesNotExist(address owner) {
if (isOwner[owner])
revert();
_;
}
modifier ownerExists(address owner) {
if (!isOwner[owner])
revert();
_;
}
modifier transactionExists(uint transactionId) {
if (transactions[transactionId].destination == 0)
revert();
_;
}
modifier confirmed(uint transactionId, address owner) {
if (!confirmations[transactionId][owner])
revert();
_;
}
modifier notConfirmed(uint transactionId, address owner) {
if (confirmations[transactionId][owner])
revert();
_;
}
modifier notExecuted(uint transactionId) {
if (transactions[transactionId].executed)
revert();
_;
}
modifier notNull(address _address) {
if (_address == 0)
revert();
_;
}
modifier validRequirement(uint ownerCount, uint _required) {
if ( ownerCount > MAX_OWNER_COUNT
|| _required > ownerCount
|| _required == 0
|| ownerCount == 0)
revert();
_;
}
/*=================================
= LIST OF OWNERS =
=================================*/
/*
This list is for reference/identification purposes only, and comprises the eight core Zethr developers.
For game contracts to be listed, they must be approved by a majority (i.e. currently five) of the owners.
Contracts can be delisted in an emergency by a single owner.
0x4F4eBF556CFDc21c3424F85ff6572C77c514Fcae // Norsefire
0x11e52c75998fe2E7928B191bfc5B25937Ca16741 // klob
0x20C945800de43394F70D789874a4daC9cFA57451 // Etherguy
0xef764BAC8a438E7E498c2E5fcCf0f174c3E3F8dB // blurr
0x8537aa2911b193e5B377938A723D805bb0865670 // oguzhanox
0x9D221b2100CbE5F05a0d2048E2556a6Df6f9a6C3 // Randall
0x71009e9E4e5e68e77ECc7ef2f2E95cbD98c6E696 // cryptodude
0xDa83156106c4dba7A26E9bF2Ca91E273350aa551 // TropicalRogue
*/
/*=================================
= PUBLIC FUNCTIONS =
=================================*/
/// @dev Contract constructor sets initial owners and required number of confirmations.
/// @param _owners List of initial owners.
/// @param _required Number of required confirmations.
constructor (address[] _owners, uint _required)
public
validRequirement(_owners.length, _required)
{
for (uint i=0; i<_owners.length; i++) {
if (isOwner[_owners[i]] || _owners[i] == 0)
revert();
isOwner[_owners[i]] = true;
}
owners = _owners;
required = _required;
dailyResetTime = now - (1 days);
}
/** Testing only.
function exitAll()
public
{
uint tokenBalance = ZTHTKN.balanceOf(address(this));
ZTHTKN.sell(tokenBalance - 1e18);
ZTHTKN.sell(1e18);
ZTHTKN.withdraw(address(0x0));
}
**/
function addZethrAddresses(address _zethr, address _divcards)
public
isAnOwner
{
zethrAddress = _zethr;
divCardAddress = _divcards;
ZTHTKN = ZTHInterface(zethrAddress);
}
/// @dev Fallback function allows Ether to be deposited.
function()
public
payable
{
}
uint NonICOBuyins;
function deposit()
public
payable
{
NonICOBuyins = NonICOBuyins.add(msg.value);
}
/// @dev Function to buy tokens with contract eth balance.
function buyTokens()
public
payable
isAnOwner
{
uint savings = address(this).balance;
if (savings > 0.01 ether) {
ZTHTKN.buyAndSetDivPercentage.value(savings)(address(0x0), 33, "");
emit BankrollInvest(savings);
}
else {
emit EtherLogged(msg.value, msg.sender);
}
}
function tokenFallback(address /*_from*/, uint /*_amountOfTokens*/, bytes /*_data*/) public returns (bool) {
// Nothing, for now. Just receives tokens.
}
/// @dev Calculates if an amount of tokens exceeds the aggregate daily limit of 15% of contract
/// balance or 5% of the contract balance on its own.
function permissibleTokenWithdrawal(uint _toWithdraw)
public
returns(bool)
{
uint currentTime = now;
uint tokenBalance = ZTHTKN.balanceOf(address(this));
uint maxPerTx = (tokenBalance.mul(MAX_WITHDRAW_PCT_TX)).div(100);
require (_toWithdraw <= maxPerTx);
if (currentTime - dailyResetTime >= resetTimer)
{
dailyResetTime = currentTime;
dailyTknLimit = (tokenBalance.mul(MAX_WITHDRAW_PCT_DAILY)).div(100);
tknsDispensedToday = _toWithdraw;
return true;
}
else
{
if (tknsDispensedToday.add(_toWithdraw) <= dailyTknLimit)
{
tknsDispensedToday += _toWithdraw;
return true;
}
else { return false; }
}
}
/// @dev Allows us to set the daily Token Limit
function setDailyTokenLimit(uint limit)
public
isAnOwner
{
dailyTknLimit = limit;
}
/// @dev Allows to add a new owner. Transaction has to be sent by wallet.
/// @param owner Address of new owner.
function addOwner(address owner)
public
onlyWallet
ownerDoesNotExist(owner)
notNull(owner)
validRequirement(owners.length + 1, required)
{
isOwner[owner] = true;
owners.push(owner);
emit OwnerAddition(owner);
}
/// @dev Allows to remove an owner. Transaction has to be sent by wallet.
/// @param owner Address of owner.
function removeOwner(address owner)
public
onlyWallet
ownerExists(owner)
validRequirement(owners.length, required)
{
isOwner[owner] = false;
for (uint i=0; i<owners.length - 1; i++)
if (owners[i] == owner) {
owners[i] = owners[owners.length - 1];
break;
}
owners.length -= 1;
if (required > owners.length)
changeRequirement(owners.length);
emit OwnerRemoval(owner);
}
/// @dev Allows to replace an owner with a new owner. Transaction has to be sent by wallet.
/// @param owner Address of owner to be replaced.
/// @param owner Address of new owner.
function replaceOwner(address owner, address newOwner)
public
onlyWallet
ownerExists(owner)
ownerDoesNotExist(newOwner)
{
for (uint i=0; i<owners.length; i++)
if (owners[i] == owner) {
owners[i] = newOwner;
break;
}
isOwner[owner] = false;
isOwner[newOwner] = true;
emit OwnerRemoval(owner);
emit OwnerAddition(newOwner);
}
/// @dev Allows to change the number of required confirmations. Transaction has to be sent by wallet.
/// @param _required Number of required confirmations.
function changeRequirement(uint _required)
public
onlyWallet
validRequirement(owners.length, _required)
{
required = _required;
emit RequirementChange(_required);
}
/// @dev Allows an owner to submit and confirm a transaction.
/// @param destination Transaction target address.
/// @param value Transaction ether value.
/// @param data Transaction data payload.
/// @return Returns transaction ID.
function submitTransaction(address destination, uint value, bytes data)
public
returns (uint transactionId)
{
transactionId = addTransaction(destination, value, data);
confirmTransaction(transactionId);
}
/// @dev Allows an owner to confirm a transaction.
/// @param transactionId Transaction ID.
function confirmTransaction(uint transactionId)
public
ownerExists(msg.sender)
transactionExists(transactionId)
notConfirmed(transactionId, msg.sender)
{
confirmations[transactionId][msg.sender] = true;
emit Confirmation(msg.sender, transactionId);
executeTransaction(transactionId);
}
/// @dev Allows an owner to revoke a confirmation for a transaction.
/// @param transactionId Transaction ID.
function revokeConfirmation(uint transactionId)
public
ownerExists(msg.sender)
confirmed(transactionId, msg.sender)
notExecuted(transactionId)
{
confirmations[transactionId][msg.sender] = false;
emit Revocation(msg.sender, transactionId);
}
/// @dev Allows anyone to execute a confirmed transaction.
/// @param transactionId Transaction ID.
function executeTransaction(uint transactionId)
public
notExecuted(transactionId)
{
if (isConfirmed(transactionId)) {
Transaction storage txToExecute = transactions[transactionId];
txToExecute.executed = true;
if (txToExecute.destination.call.value(txToExecute.value)(txToExecute.data))
emit Execution(transactionId);
else {
emit ExecutionFailure(transactionId);
txToExecute.executed = false;
}
}
}
/// @dev Returns the confirmation status of a transaction.
/// @param transactionId Transaction ID.
/// @return Confirmation status.
function isConfirmed(uint transactionId)
public
constant
returns (bool)
{
uint count = 0;
for (uint i=0; i<owners.length; i++) {
if (confirmations[transactionId][owners[i]])
count += 1;
if (count == required)
return true;
}
}
/*=================================
= OPERATOR FUNCTIONS =
=================================*/
/// @dev Adds a new transaction to the transaction mapping, if transaction does not exist yet.
/// @param destination Transaction target address.
/// @param value Transaction ether value.
/// @param data Transaction data payload.
/// @return Returns transaction ID.
function addTransaction(address destination, uint value, bytes data)
internal
notNull(destination)
returns (uint transactionId)
{
transactionId = transactionCount;
transactions[transactionId] = Transaction({
destination: destination,
value: value,
data: data,
executed: false
});
transactionCount += 1;
emit Submission(transactionId);
}
/*
* Web3 call functions
*/
/// @dev Returns number of confirmations of a transaction.
/// @param transactionId Transaction ID.
/// @return Number of confirmations.
function getConfirmationCount(uint transactionId)
public
constant
returns (uint count)
{
for (uint i=0; i<owners.length; i++)
if (confirmations[transactionId][owners[i]])
count += 1;
}
/// @dev Returns total number of transactions after filers are applied.
/// @param pending Include pending transactions.
/// @param executed Include executed transactions.
/// @return Total number of transactions after filters are applied.
function getTransactionCount(bool pending, bool executed)
public
constant
returns (uint count)
{
for (uint i=0; i<transactionCount; i++)
if ( pending && !transactions[i].executed
|| executed && transactions[i].executed)
count += 1;
}
/// @dev Returns list of owners.
/// @return List of owner addresses.
function getOwners()
public
constant
returns (address[])
{
return owners;
}
/// @dev Returns array with owner addresses, which confirmed transaction.
/// @param transactionId Transaction ID.
/// @return Returns array of owner addresses.
function getConfirmations(uint transactionId)
public
constant
returns (address[] _confirmations)
{
address[] memory confirmationsTemp = new address[](owners.length);
uint count = 0;
uint i;
for (i=0; i<owners.length; i++)
if (confirmations[transactionId][owners[i]]) {
confirmationsTemp[count] = owners[i];
count += 1;
}
_confirmations = new address[](count);
for (i=0; i<count; i++)
_confirmations[i] = confirmationsTemp[i];
}
/// @dev Returns list of transaction IDs in defined range.
/// @param from Index start position of transaction array.
/// @param to Index end position of transaction array.
/// @param pending Include pending transactions.
/// @param executed Include executed transactions.
/// @return Returns array of transaction IDs.
function getTransactionIds(uint from, uint to, bool pending, bool executed)
public
constant
returns (uint[] _transactionIds)
{
uint[] memory transactionIdsTemp = new uint[](transactionCount);
uint count = 0;
uint i;
for (i=0; i<transactionCount; i++)
if ( pending && !transactions[i].executed
|| executed && transactions[i].executed)
{
transactionIdsTemp[count] = i;
count += 1;
}
_transactionIds = new uint[](to - from);
for (i=from; i<to; i++)
_transactionIds[i - from] = transactionIdsTemp[i];
}
// Additions for Bankroll
function whiteListContract(address contractAddress)
public
isAnOwner
contractIsNotWhiteListed(contractAddress)
notNull(contractAddress)
{
isWhitelisted[contractAddress] = true;
whiteListedContracts.push(contractAddress);
// We set the daily tokens for a particular contract in a separate call.
dailyTokensPerContract[contractAddress] = 0;
emit WhiteListAddition(contractAddress);
}
// Remove a whitelisted contract. This is an exception to the norm in that
// it can be invoked directly by any owner, in the event that a game is found
// to be bugged or otherwise faulty, so it can be shut down as an emergency measure.
// Iterates through the whitelisted contracts to find contractAddress,
// then swaps it with the last address in the list - then decrements length
function deWhiteListContract(address contractAddress)
public
isAnOwner
contractIsWhiteListed(contractAddress)
{
isWhitelisted[contractAddress] = false;
for (uint i=0; i < whiteListedContracts.length - 1; i++)
if (whiteListedContracts[i] == contractAddress) {
whiteListedContracts[i] = owners[whiteListedContracts.length - 1];
break;
}
whiteListedContracts.length -= 1;
emit WhiteListRemoval(contractAddress);
}
function contractTokenWithdraw(uint amount, address target) public
contractIsWhiteListed(msg.sender)
{
require(isWhitelisted[msg.sender]);
require(ZTHTKN.transfer(target, amount));
}
// Alters the amount of tokens allocated to a game contract on a daily basis.
function alterTokenGrant(address _contract, uint _newAmount)
public
isAnOwner
contractIsWhiteListed(_contract)
{
dailyTokensPerContract[_contract] = _newAmount;
}
function queryTokenGrant(address _contract)
public
view
returns (uint)
{
return dailyTokensPerContract[_contract];
}
// Function to be run by an owner (ideally on a cron job) which performs daily
// token collection and dispersal for all whitelisted contracts.
function dailyAccounting()
public
isAnOwner
{
for (uint i=0; i < whiteListedContracts.length; i++)
{
address _contract = whiteListedContracts[i];
if ( dailyTokensPerContract[_contract] > 0 )
{
allocateTokens(_contract);
emit DailyTokenAdmin(_contract);
}
}
}
// In the event that we want to manually take tokens back from a whitelisted contract,
// we can do so.
function retrieveTokens(address _contract, uint _amount)
public
isAnOwner
contractIsWhiteListed(_contract)
{
require(ZTHTKN.transferFrom(_contract, address(this), _amount));
}
// Dispenses daily amount of ZTH to whitelisted contract, or retrieves the excess.
// Block withdraws greater than MAX_WITHDRAW_PCT_TX of Zethr token balance.
// (May require occasional adjusting of the daily token allocation for contracts.)
function allocateTokens(address _contract)
public
isAnOwner
contractIsWhiteListed(_contract)
{
uint dailyAmount = dailyTokensPerContract[_contract];
uint zthPresent = ZTHTKN.balanceOf(_contract);
// Make sure that tokens aren't sent to a contract which is in the black.
if (zthPresent <= dailyAmount)
{
// We need to send tokens over, make sure it's a permitted amount, and then send.
uint toDispense = dailyAmount.sub(zthPresent);
// Make sure amount is <= tokenbalance*MAX_WITHDRAW_PCT_TX
require(permissibleTokenWithdrawal(toDispense));
require(ZTHTKN.transfer(_contract, toDispense));
emit DailyTokensSent(_contract, toDispense);
} else
{
// The contract in question has made a profit: retrieve the excess tokens.
uint toRetrieve = zthPresent.sub(dailyAmount);
require(ZTHTKN.transferFrom(_contract, address(this), toRetrieve));
emit DailyTokensReceived(_contract, toRetrieve);
}
emit DailyTokenAdmin(_contract);
}
// Dev withdrawal of tokens - splits equally among all owners of contract
function devTokenWithdraw(uint amount) public
onlyWallet
{
require(permissibleTokenWithdrawal(amount));
uint amountPerPerson = SafeMath.div(amount, owners.length);
for (uint i=0; i<owners.length; i++) {
ZTHTKN.transfer(owners[i], amountPerPerson);
}
emit DevWithdraw(amount, amountPerPerson);
}
// Change the dividend card address. Can't see why this would ever need
// to be invoked, but better safe than sorry.
function changeDivCardAddress(address _newDivCardAddress)
public
isAnOwner
{
divCardAddress = _newDivCardAddress;
}
// Receive Ether (from Zethr itself or any other source) and purchase tokens at the 33% dividend rate.
// If the amount is less than 0.01 Ether, the Ether is stored by the contract until the balance
// exceeds that limit and then purchases all it can.
function receiveDividends() public payable {
if (!reEntered) {
uint ActualBalance = (address(this).balance.sub(NonICOBuyins));
if (ActualBalance > 0.01 ether) {
reEntered = true;
ZTHTKN.buyAndSetDivPercentage.value(ActualBalance)(address(0x0), 33, "");
emit BankrollInvest(ActualBalance);
reEntered = false;
}
}
}
// Use all available balance to buy in
function buyInWithAllBalance() public payable isAnOwner {
if (!reEntered) {
uint balance = address(this).balance;
require (balance > 0.01 ether);
ZTHTKN.buyAndSetDivPercentage.value(balance)(address(0x0), 33, "");
}
}
/*=================================
= UTILITIES =
=================================*/
// Convert an hexadecimal character to their value
function fromHexChar(uint c) public pure returns (uint) {
if (byte(c) >= byte('0') && byte(c) <= byte('9')) {
return c - uint(byte('0'));
}
if (byte(c) >= byte('a') && byte(c) <= byte('f')) {
return 10 + c - uint(byte('a'));
}
if (byte(c) >= byte('A') && byte(c) <= byte('F')) {
return 10 + c - uint(byte('A'));
}
}
// Convert an hexadecimal string to raw bytes
function fromHex(string s) public pure returns (bytes) {
bytes memory ss = bytes(s);
require(ss.length%2 == 0); // length must be even
bytes memory r = new bytes(ss.length/2);
for (uint i=0; i<ss.length/2; ++i) {
r[i] = byte(fromHexChar(uint(ss[2*i])) * 16 +
fromHexChar(uint(ss[2*i+1])));
}
return r;
}
}
/**
* @title SafeMath
* @dev Math operations with safety checks that throw on error
*/
library SafeMath {
/**
* @dev Multiplies two numbers, throws on overflow.
*/
function mul(uint a, uint b) internal pure returns (uint) {
if (a == 0) {
return 0;
}
uint c = a * b;
assert(c / a == b);
return c;
}
/**
* @dev Integer division of two numbers, truncating the quotient.
*/
function div(uint a, uint b) internal pure returns (uint) {
// assert(b > 0); // Solidity automatically throws when dividing by 0
uint c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Subtracts two numbers, throws on overflow (i.e. if subtrahend is greater than minuend).
*/
function sub(uint a, uint b) internal pure returns (uint) {
assert(b <= a);
return a - b;
}
/**
* @dev Adds two numbers, throws on overflow.
*/
function add(uint a, uint b) internal pure returns (uint) {
uint c = a + b;
assert(c >= a);
return c;
}
}