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Check sent ETH when buying oTokens #9

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Check sent ETH when buying oTokens #9

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1f23297
require eth sent equal to uniswap price
haythemsellami Mar 15, 2020
1e82420
function visibility
haythemsellami Mar 18, 2020
c315fe9
function visibility
haythemsellami Mar 18, 2020
1e5494b
update error message
haythemsellami Mar 18, 2020
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4 changes: 3 additions & 1 deletion contracts/OptionsExchange.sol
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Original file line number Diff line number Diff line change
Expand Up @@ -176,7 +176,7 @@ contract OptionsExchange {
IERC20 oToken,
uint256 _amt,
address payable _transferTo
) public returns (uint256) {
) internal returns (uint256) {
require(!isETH(oToken), "Can only buy oTokens");

if (!isETH(paymentToken)) {
Expand Down Expand Up @@ -224,6 +224,8 @@ contract OptionsExchange {

uint256 ethToTransfer = exchange.getEthToTokenOutputPrice(_amt);

require(msg.value == ethToTransfer, "Not enough ETH to buy oToken");

emit BuyOTokens(
msg.sender,
_transferTo,
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