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make transfer only at granted audience

This commit is contained in:
Ricardo Guilherme Schmidt 2018-04-26 00:09:19 -03:00
parent c8f8bf5ebb
commit 962ca2e35c
1 changed files with 28 additions and 14 deletions
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42
contracts/communication/MessageTribute.sol
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@ -125,7 +125,6 @@ contract MessageTribute is Controlled {
require(f.amount <= token.allowance(msg.sender, address(this)));
require(audienceRequested[_from][msg.sender].blockNum == 0);
require(lastAudienceDeniedTimestamp[_from][msg.sender] + 3 days <= now);
token.transferFrom(msg.sender, address(this), f.amount);
audienceRequested[_from][msg.sender] = Audience(block.number, now, f, _hashedSecret);
emit AudienceRequested(_from, msg.sender);
}
@ -149,7 +148,7 @@ contract MessageTribute is Controlled {
require(audienceRequested[_from][_to].timestamp + 3 days <= now);
uint256 amount = audienceRequested[_from][_to].fee.amount;
delete audienceRequested[_from][_to];
token.transfer(_to, amount);
emit AudienceTimeOut(_from, _to);
}
@ -162,7 +161,6 @@ contract MessageTribute is Controlled {
require(audienceRequested[_from][msg.sender].timestamp + 2 hours <= now);
uint256 amount = audienceRequested[_from][msg.sender].fee.amount;
delete audienceRequested[_from][msg.sender];
token.transfer(msg.sender, amount);
emit AudienceCancelled(_from, msg.sender);
}
@ -173,30 +171,46 @@ contract MessageTribute is Controlled {
* @param _secret Captcha solution
*/
function grantAudience(address _to, bool _approve, bool _waive, bytes32 _secret) public {
Audience storage aud = audienceRequested[msg.sender][_to];
uint8 v;
bytes32 r;
bytes32 s;
address grantor = ecrecover(
keccak256(
"\x19Ethereum Signed Message:32",
keccak256(
address(this),
bytes4(keccak256("grantAudience(address,bool,bool,bytes32)")),
_to,
_approve,
_waive,
_secret
)
),
v,
r,
s
);
Audience storage aud = audienceRequested[grantor][_to];
require(aud.blockNum > 0);
require(aud.hashedSecret == keccak256(msg.sender, _to, _secret));
require(aud.hashedSecret == keccak256(grantor, _to, _secret));
emit AudienceGranted(msg.sender, _to, _approve);
emit AudienceGranted(grantor, _to, _approve);
if(!_approve)
lastAudienceDeniedTimestamp[msg.sender][_to] = block.timestamp;
lastAudienceDeniedTimestamp[grantor][_to] = block.timestamp;
uint256 amount = aud.fee.amount;
delete audienceRequested[msg.sender][_to];
delete audienceRequested[grantor][_to];
clearFee(msg.sender, _to);
clearFee(grantor, _to);
if (!_waive) {
if (_approve) {
require(token.transfer(msg.sender, amount));
} else {
token.transfer(_to, amount);
require(token.transferFrom(_to, grantor, amount));
}
} else {
token.transfer(_to, amount);
}
}