mirror of
https://github.com/Instadapp/smart-contract.git
synced 2024-07-29 22:08:07 +00:00
676 lines
21 KiB
Solidity
676 lines
21 KiB
Solidity
pragma solidity 0.5.12;
|
|
|
|
contract GemLike {
|
|
function approve(address, uint) public;
|
|
function transfer(address, uint) public;
|
|
function transferFrom(address, address, uint) public;
|
|
function deposit() public payable;
|
|
function withdraw(uint) public;
|
|
}
|
|
|
|
contract ManagerLike {
|
|
function cdpCan(address, uint, address) public view returns (uint);
|
|
function ilks(uint) public view returns (bytes32);
|
|
function owns(uint) public view returns (address);
|
|
function urns(uint) public view returns (address);
|
|
function vat() public view returns (address);
|
|
function open(bytes32, address) public returns (uint);
|
|
function give(uint, address) public;
|
|
function cdpAllow(uint, address, uint) public;
|
|
function urnAllow(address, uint) public;
|
|
function frob(uint, int, int) public;
|
|
function flux(uint, address, uint) public;
|
|
function move(uint, address, uint) public;
|
|
function exit(address, uint, address, uint) public;
|
|
function quit(uint, address) public;
|
|
function enter(address, uint) public;
|
|
function shift(uint, uint) public;
|
|
}
|
|
|
|
contract VatLike {
|
|
function can(address, address) public view returns (uint);
|
|
function ilks(bytes32) public view returns (uint, uint, uint, uint, uint);
|
|
function dai(address) public view returns (uint);
|
|
function urns(bytes32, address) public view returns (uint, uint);
|
|
function frob(bytes32, address, address, address, int, int) public;
|
|
function hope(address) public;
|
|
function move(address, address, uint) public;
|
|
}
|
|
|
|
contract GemJoinLike {
|
|
function dec() public returns (uint);
|
|
function gem() public returns (GemLike);
|
|
function join(address, uint) public payable;
|
|
function exit(address, uint) public;
|
|
}
|
|
|
|
contract GNTJoinLike {
|
|
function bags(address) public view returns (address);
|
|
function make(address) public returns (address);
|
|
}
|
|
|
|
contract DaiJoinLike {
|
|
function vat() public returns (VatLike);
|
|
function dai() public returns (GemLike);
|
|
function join(address, uint) public payable;
|
|
function exit(address, uint) public;
|
|
}
|
|
|
|
contract HopeLike {
|
|
function hope(address) public;
|
|
function nope(address) public;
|
|
}
|
|
|
|
contract EndLike {
|
|
function fix(bytes32) public view returns (uint);
|
|
function cash(bytes32, uint) public;
|
|
function free(bytes32) public;
|
|
function pack(uint) public;
|
|
function skim(bytes32, address) public;
|
|
}
|
|
|
|
contract JugLike {
|
|
function drip(bytes32) public returns (uint);
|
|
}
|
|
|
|
contract PotLike {
|
|
function pie(address) public view returns (uint);
|
|
function drip() public returns (uint);
|
|
function join(uint) public;
|
|
function exit(uint) public;
|
|
}
|
|
|
|
contract ProxyRegistryLike {
|
|
function proxies(address) public view returns (address);
|
|
function build(address) public returns (address);
|
|
}
|
|
|
|
contract ProxyLike {
|
|
function owner() public view returns (address);
|
|
}
|
|
|
|
// !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
|
|
// WARNING: These functions meant to be used as a a library for a DSProxy. Some are unsafe if you call them directly.
|
|
// !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
|
|
|
|
contract Common {
|
|
uint256 constant RAY = 10 ** 27;
|
|
|
|
// Internal functions
|
|
|
|
function mul(uint x, uint y) internal pure returns (uint z) {
|
|
require(y == 0 || (z = x * y) / y == x, "mul-overflow");
|
|
}
|
|
|
|
// Public functions
|
|
|
|
function daiJoin_join(address apt, address urn, uint wad) public {
|
|
// Gets DAI from the user's wallet
|
|
DaiJoinLike(apt).dai().transferFrom(msg.sender, address(this), wad);
|
|
// Approves adapter to take the DAI amount
|
|
DaiJoinLike(apt).dai().approve(apt, wad);
|
|
// Joins DAI into the vat
|
|
DaiJoinLike(apt).join(urn, wad);
|
|
}
|
|
}
|
|
|
|
contract DssProxyActions is Common {
|
|
// Internal functions
|
|
|
|
function sub(uint x, uint y) internal pure returns (uint z) {
|
|
require((z = x - y) <= x, "sub-overflow");
|
|
}
|
|
|
|
function toInt(uint x) internal pure returns (int y) {
|
|
y = int(x);
|
|
require(y >= 0, "int-overflow");
|
|
}
|
|
|
|
function toRad(uint wad) internal pure returns (uint rad) {
|
|
rad = mul(wad, 10 ** 27);
|
|
}
|
|
|
|
function convertTo18(address gemJoin, uint256 amt) internal returns (uint256 wad) {
|
|
// For those collaterals that have less than 18 decimals precision we need to do the conversion before passing to frob function
|
|
// Adapters will automatically handle the difference of precision
|
|
wad = mul(
|
|
amt,
|
|
10 ** (18 - GemJoinLike(gemJoin).dec())
|
|
);
|
|
}
|
|
|
|
function _getDrawDart(
|
|
address vat,
|
|
address jug,
|
|
address urn,
|
|
bytes32 ilk,
|
|
uint wad
|
|
) internal returns (int dart) {
|
|
// Updates stability fee rate
|
|
uint rate = JugLike(jug).drip(ilk);
|
|
|
|
// Gets DAI balance of the urn in the vat
|
|
uint dai = VatLike(vat).dai(urn);
|
|
|
|
// If there was already enough DAI in the vat balance, just exits it without adding more debt
|
|
if (dai < mul(wad, RAY)) {
|
|
// Calculates the needed dart so together with the existing dai in the vat is enough to exit wad amount of DAI tokens
|
|
dart = toInt(sub(mul(wad, RAY), dai) / rate);
|
|
// This is neeeded due lack of precision. It might need to sum an extra dart wei (for the given DAI wad amount)
|
|
dart = mul(uint(dart), rate) < mul(wad, RAY) ? dart + 1 : dart;
|
|
}
|
|
}
|
|
|
|
function _getWipeDart(
|
|
address vat,
|
|
uint dai,
|
|
address urn,
|
|
bytes32 ilk
|
|
) internal view returns (int dart) {
|
|
// Gets actual rate from the vat
|
|
(, uint rate,,,) = VatLike(vat).ilks(ilk);
|
|
// Gets actual art value of the urn
|
|
(, uint art) = VatLike(vat).urns(ilk, urn);
|
|
|
|
// Uses the whole dai balance in the vat to reduce the debt
|
|
dart = toInt(dai / rate);
|
|
// Checks the calculated dart is not higher than urn.art (total debt), otherwise uses its value
|
|
dart = uint(dart) <= art ? - dart : - toInt(art);
|
|
}
|
|
|
|
function _getFreeDink(
|
|
address vat,
|
|
uint wadC,
|
|
address urn,
|
|
bytes32 ilk
|
|
) internal view returns (uint dink) {
|
|
// Gets actual art value of the urn
|
|
(dink,) = VatLike(vat).urns(ilk, urn);
|
|
|
|
// Uses the whole dai balance in the vat to reduce the debt
|
|
// Checks the calculated dart is not higher than urn.art (total debt), otherwise uses its value
|
|
dink = wadC <= dink ? wadC : dink;
|
|
}
|
|
|
|
function _getWipeAllWad(
|
|
address vat,
|
|
address usr,
|
|
address urn,
|
|
bytes32 ilk
|
|
) internal view returns (uint wad) {
|
|
// Gets actual rate from the vat
|
|
(, uint rate,,,) = VatLike(vat).ilks(ilk);
|
|
// Gets actual art value of the urn
|
|
(, uint art) = VatLike(vat).urns(ilk, urn);
|
|
// Gets actual dai amount in the urn
|
|
uint dai = VatLike(vat).dai(usr);
|
|
|
|
uint rad = sub(mul(art, rate), dai);
|
|
wad = rad / RAY;
|
|
|
|
// If the rad precision has some dust, it will need to request for 1 extra wad wei
|
|
wad = mul(wad, RAY) < rad ? wad + 1 : wad;
|
|
}
|
|
|
|
// Public functions
|
|
|
|
function transfer(address gem, address dst, uint wad) public {
|
|
GemLike(gem).transfer(dst, wad);
|
|
}
|
|
|
|
function ethJoin_join(address apt, address urn) public payable {
|
|
// Wraps ETH in WETH
|
|
GemJoinLike(apt).gem().deposit.value(msg.value)();
|
|
// Approves adapter to take the WETH amount
|
|
GemJoinLike(apt).gem().approve(address(apt), msg.value);
|
|
// Joins WETH collateral into the vat
|
|
GemJoinLike(apt).join(urn, msg.value);
|
|
}
|
|
|
|
function gemJoin_join(address apt, address urn, uint wad, bool transferFrom) public {
|
|
// Only executes for tokens that have approval/transferFrom implementation
|
|
if (transferFrom) {
|
|
// Gets token from the user's wallet
|
|
GemJoinLike(apt).gem().transferFrom(msg.sender, address(this), wad);
|
|
// Approves adapter to take the token amount
|
|
GemJoinLike(apt).gem().approve(apt, wad);
|
|
}
|
|
// Joins token collateral into the vat
|
|
GemJoinLike(apt).join(urn, wad);
|
|
}
|
|
|
|
function hope(
|
|
address obj,
|
|
address usr
|
|
) public {
|
|
HopeLike(obj).hope(usr);
|
|
}
|
|
|
|
function nope(
|
|
address obj,
|
|
address usr
|
|
) public {
|
|
HopeLike(obj).nope(usr);
|
|
}
|
|
|
|
function open(
|
|
address manager,
|
|
bytes32 ilk,
|
|
address usr
|
|
) public returns (uint cdp) {
|
|
cdp = ManagerLike(manager).open(ilk, usr);
|
|
}
|
|
|
|
function give(
|
|
address manager,
|
|
uint cdp,
|
|
address usr
|
|
) public {
|
|
ManagerLike(manager).give(cdp, usr);
|
|
}
|
|
|
|
function giveToProxy(
|
|
address proxyRegistry,
|
|
address manager,
|
|
uint cdp,
|
|
address dst
|
|
) public {
|
|
// Gets actual proxy address
|
|
address proxy = ProxyRegistryLike(proxyRegistry).proxies(dst);
|
|
// Checks if the proxy address already existed and dst address is still the owner
|
|
if (proxy == address(0) || ProxyLike(proxy).owner() != dst) {
|
|
uint csize;
|
|
assembly {
|
|
csize := extcodesize(dst)
|
|
}
|
|
// We want to avoid creating a proxy for a contract address that might not be able to handle proxies, then losing the CDP
|
|
require(csize == 0, "Dst-is-a-contract");
|
|
// Creates the proxy for the dst address
|
|
proxy = ProxyRegistryLike(proxyRegistry).build(dst);
|
|
}
|
|
// Transfers CDP to the dst proxy
|
|
give(manager, cdp, proxy);
|
|
}
|
|
|
|
function cdpAllow(
|
|
address manager,
|
|
uint cdp,
|
|
address usr,
|
|
uint ok
|
|
) public {
|
|
ManagerLike(manager).cdpAllow(cdp, usr, ok);
|
|
}
|
|
|
|
function urnAllow(
|
|
address manager,
|
|
address usr,
|
|
uint ok
|
|
) public {
|
|
ManagerLike(manager).urnAllow(usr, ok);
|
|
}
|
|
|
|
function flux(
|
|
address manager,
|
|
uint cdp,
|
|
address dst,
|
|
uint wad
|
|
) public {
|
|
ManagerLike(manager).flux(cdp, dst, wad);
|
|
}
|
|
|
|
function move(
|
|
address manager,
|
|
uint cdp,
|
|
address dst,
|
|
uint rad
|
|
) public {
|
|
ManagerLike(manager).move(cdp, dst, rad);
|
|
}
|
|
|
|
function frob(
|
|
address manager,
|
|
uint cdp,
|
|
int dink,
|
|
int dart
|
|
) public {
|
|
ManagerLike(manager).frob(cdp, dink, dart);
|
|
}
|
|
|
|
function quit(
|
|
address manager,
|
|
uint cdp,
|
|
address dst
|
|
) public {
|
|
ManagerLike(manager).quit(cdp, dst);
|
|
}
|
|
|
|
function enter(
|
|
address manager,
|
|
address src,
|
|
uint cdp
|
|
) public {
|
|
ManagerLike(manager).enter(src, cdp);
|
|
}
|
|
|
|
function shift(
|
|
address manager,
|
|
uint cdpSrc,
|
|
uint cdpOrg
|
|
) public {
|
|
ManagerLike(manager).shift(cdpSrc, cdpOrg);
|
|
}
|
|
|
|
function makeGemBag(
|
|
address gemJoin
|
|
) public returns (address bag) {
|
|
bag = GNTJoinLike(gemJoin).make(address(this));
|
|
}
|
|
|
|
function lockETH(
|
|
address manager,
|
|
address ethJoin,
|
|
uint cdp
|
|
) public payable {
|
|
// Receives ETH amount, converts it to WETH and joins it into the vat
|
|
ethJoin_join(ethJoin, address(this));
|
|
// Locks WETH amount into the CDP
|
|
VatLike(ManagerLike(manager).vat()).frob(
|
|
ManagerLike(manager).ilks(cdp),
|
|
ManagerLike(manager).urns(cdp),
|
|
address(this),
|
|
address(this),
|
|
toInt(msg.value),
|
|
0
|
|
);
|
|
}
|
|
|
|
function safeLockETH(
|
|
address manager,
|
|
address ethJoin,
|
|
uint cdp,
|
|
address owner
|
|
) public payable {
|
|
require(ManagerLike(manager).owns(cdp) == owner, "owner-missmatch");
|
|
lockETH(manager, ethJoin, cdp);
|
|
}
|
|
|
|
function lockGem(
|
|
address manager,
|
|
address gemJoin,
|
|
uint cdp,
|
|
uint wad,
|
|
bool transferFrom
|
|
) public {
|
|
// Takes token amount from user's wallet and joins into the vat
|
|
gemJoin_join(gemJoin, address(this), wad, transferFrom);
|
|
// Locks token amount into the CDP
|
|
VatLike(ManagerLike(manager).vat()).frob(
|
|
ManagerLike(manager).ilks(cdp),
|
|
ManagerLike(manager).urns(cdp),
|
|
address(this),
|
|
address(this),
|
|
toInt(convertTo18(gemJoin, wad)),
|
|
0
|
|
);
|
|
}
|
|
|
|
function safeLockGem(
|
|
address manager,
|
|
address gemJoin,
|
|
uint cdp,
|
|
uint wad,
|
|
bool transferFrom,
|
|
address owner
|
|
) public {
|
|
require(ManagerLike(manager).owns(cdp) == owner, "owner-missmatch");
|
|
lockGem(manager, gemJoin, cdp, wad, transferFrom);
|
|
}
|
|
|
|
function freeETH(
|
|
address manager,
|
|
address ethJoin,
|
|
uint cdp,
|
|
uint wad
|
|
) public {
|
|
// Unlocks WETH amount from the CDP
|
|
address urn = ManagerLike(manager).urns(cdp);
|
|
address vat = ManagerLike(manager).vat();
|
|
bytes32 ilk = ManagerLike(manager).ilks(cdp);
|
|
uint dink = _getFreeDink(
|
|
vat,
|
|
wad,
|
|
urn,
|
|
ilk
|
|
);
|
|
frob(manager, cdp, -toInt(dink), 0);
|
|
// Moves the amount from the CDP urn to proxy's address
|
|
flux(manager, cdp, address(this), dink);
|
|
// Exits WETH amount to proxy address as a token
|
|
GemJoinLike(ethJoin).exit(address(this), dink);
|
|
// Converts WETH to ETH
|
|
GemJoinLike(ethJoin).gem().withdraw(dink);
|
|
// Sends ETH back to the user's wallet
|
|
msg.sender.transfer(dink);
|
|
}
|
|
|
|
function freeGem(
|
|
address manager,
|
|
address gemJoin,
|
|
uint cdp,
|
|
uint wad
|
|
) public {
|
|
address urn = ManagerLike(manager).urns(cdp);
|
|
address vat = ManagerLike(manager).vat();
|
|
bytes32 ilk = ManagerLike(manager).ilks(cdp);
|
|
uint dink = _getFreeDink(
|
|
vat,
|
|
wad,
|
|
urn,
|
|
ilk
|
|
);
|
|
|
|
uint wad18 = convertTo18(gemJoin, dink);
|
|
// Unlocks token amount from the CDP
|
|
frob(manager, cdp, -toInt(wad18), 0);
|
|
// Moves the amount from the CDP urn to proxy's address
|
|
flux(manager, cdp, address(this), wad18);
|
|
// Exits token amount to the user's wallet as a token
|
|
GemJoinLike(gemJoin).exit(msg.sender, wad18);
|
|
}
|
|
|
|
function exitETH(
|
|
address manager,
|
|
address ethJoin,
|
|
uint cdp,
|
|
uint wad
|
|
) public {
|
|
// Moves the amount from the CDP urn to proxy's address
|
|
flux(manager, cdp, address(this), wad);
|
|
|
|
// Exits WETH amount to proxy address as a token
|
|
GemJoinLike(ethJoin).exit(address(this), wad);
|
|
// Converts WETH to ETH
|
|
GemJoinLike(ethJoin).gem().withdraw(wad);
|
|
// Sends ETH back to the user's wallet
|
|
msg.sender.transfer(wad);
|
|
}
|
|
|
|
function exitGem(
|
|
address manager,
|
|
address gemJoin,
|
|
uint cdp,
|
|
uint wad
|
|
) public {
|
|
// Moves the amount from the CDP urn to proxy's address
|
|
flux(manager, cdp, address(this), convertTo18(gemJoin, wad));
|
|
|
|
// Exits token amount to the user's wallet as a token
|
|
GemJoinLike(gemJoin).exit(msg.sender, wad);
|
|
}
|
|
|
|
function draw(
|
|
address manager,
|
|
address jug,
|
|
address daiJoin,
|
|
uint cdp,
|
|
uint wad
|
|
) public {
|
|
address urn = ManagerLike(manager).urns(cdp);
|
|
address vat = ManagerLike(manager).vat();
|
|
bytes32 ilk = ManagerLike(manager).ilks(cdp);
|
|
// Generates debt in the CDP
|
|
frob(manager, cdp, 0, _getDrawDart(vat, jug, urn, ilk, wad));
|
|
// Moves the DAI amount (balance in the vat in rad) to proxy's address
|
|
move(manager, cdp, address(this), toRad(wad));
|
|
// Allows adapter to access to proxy's DAI balance in the vat
|
|
if (VatLike(vat).can(address(this), address(daiJoin)) == 0) {
|
|
VatLike(vat).hope(daiJoin);
|
|
}
|
|
// Exits DAI to the user's wallet as a token
|
|
DaiJoinLike(daiJoin).exit(msg.sender, wad);
|
|
}
|
|
|
|
function drawAndSend(
|
|
address manager,
|
|
address jug,
|
|
address daiJoin,
|
|
uint cdp,
|
|
uint wad,
|
|
address to
|
|
) public {
|
|
address urn = ManagerLike(manager).urns(cdp);
|
|
address vat = ManagerLike(manager).vat();
|
|
bytes32 ilk = ManagerLike(manager).ilks(cdp);
|
|
// Generates debt in the CDP
|
|
frob(manager, cdp, 0, _getDrawDart(vat, jug, urn, ilk, wad));
|
|
// Moves the DAI amount (balance in the vat in rad) to proxy's address
|
|
move(manager, cdp, address(this), toRad(wad));
|
|
// Allows adapter to access to proxy's DAI balance in the vat
|
|
if (VatLike(vat).can(address(this), address(daiJoin)) == 0) {
|
|
VatLike(vat).hope(daiJoin);
|
|
}
|
|
// Exits DAI to the user's wallet as a token
|
|
DaiJoinLike(daiJoin).exit(to, wad);
|
|
}
|
|
|
|
function wipe(
|
|
address manager,
|
|
address daiJoin,
|
|
uint cdp,
|
|
uint wad
|
|
) public {
|
|
address vat = ManagerLike(manager).vat();
|
|
address urn = ManagerLike(manager).urns(cdp);
|
|
bytes32 ilk = ManagerLike(manager).ilks(cdp);
|
|
|
|
address own = ManagerLike(manager).owns(cdp);
|
|
if (own == address(this) || ManagerLike(manager).cdpCan(own, cdp, address(this)) == 1) {
|
|
// Joins DAI amount into the vat
|
|
daiJoin_join(daiJoin, urn, wad);
|
|
// Paybacks debt to the CDP
|
|
frob(manager, cdp, 0, _getWipeDart(vat, VatLike(vat).dai(urn), urn, ilk));
|
|
} else {
|
|
// Joins DAI amount into the vat
|
|
daiJoin_join(daiJoin, address(this), wad);
|
|
// Paybacks debt to the CDP
|
|
VatLike(vat).frob(
|
|
ilk,
|
|
urn,
|
|
address(this),
|
|
address(this),
|
|
0,
|
|
_getWipeDart(vat, wad * RAY, urn, ilk)
|
|
);
|
|
}
|
|
}
|
|
|
|
function safeWipe(
|
|
address manager,
|
|
address daiJoin,
|
|
uint cdp,
|
|
uint wad,
|
|
address owner
|
|
) public {
|
|
require(ManagerLike(manager).owns(cdp) == owner, "owner-missmatch");
|
|
wipe(manager, daiJoin, cdp, wad);
|
|
}
|
|
|
|
function lockETHAndDraw(
|
|
address manager,
|
|
address jug,
|
|
address ethJoin,
|
|
address daiJoin,
|
|
uint cdp,
|
|
uint wadD
|
|
) public payable {
|
|
address urn = ManagerLike(manager).urns(cdp);
|
|
address vat = ManagerLike(manager).vat();
|
|
bytes32 ilk = ManagerLike(manager).ilks(cdp);
|
|
// Receives ETH amount, converts it to WETH and joins it into the vat
|
|
ethJoin_join(ethJoin, urn);
|
|
// Locks WETH amount into the CDP and generates debt
|
|
frob(manager, cdp, toInt(msg.value), _getDrawDart(vat, jug, urn, ilk, wadD));
|
|
// Moves the DAI amount (balance in the vat in rad) to proxy's address
|
|
move(manager, cdp, address(this), toRad(wadD));
|
|
// Allows adapter to access to proxy's DAI balance in the vat
|
|
if (VatLike(vat).can(address(this), address(daiJoin)) == 0) {
|
|
VatLike(vat).hope(daiJoin);
|
|
}
|
|
// Exits DAI to the user's wallet as a token
|
|
DaiJoinLike(daiJoin).exit(msg.sender, wadD);
|
|
}
|
|
|
|
function openLockETHAndDraw(
|
|
address manager,
|
|
address jug,
|
|
address ethJoin,
|
|
address daiJoin,
|
|
bytes32 ilk,
|
|
uint wadD
|
|
) public payable returns (uint cdp) {
|
|
cdp = open(manager, ilk, address(this));
|
|
lockETHAndDraw(manager, jug, ethJoin, daiJoin, cdp, wadD);
|
|
}
|
|
|
|
function lockGemAndDraw(
|
|
address manager,
|
|
address jug,
|
|
address gemJoin,
|
|
address daiJoin,
|
|
uint cdp,
|
|
uint wadC,
|
|
uint wadD,
|
|
bool transferFrom
|
|
) public {
|
|
address urn = ManagerLike(manager).urns(cdp);
|
|
address vat = ManagerLike(manager).vat();
|
|
bytes32 ilk = ManagerLike(manager).ilks(cdp);
|
|
// Takes token amount from user's wallet and joins into the vat
|
|
gemJoin_join(gemJoin, urn, wadC, transferFrom);
|
|
// Locks token amount into the CDP and generates debt
|
|
frob(manager, cdp, toInt(convertTo18(gemJoin, wadC)), _getDrawDart(vat, jug, urn, ilk, wadD));
|
|
// Moves the DAI amount (balance in the vat in rad) to proxy's address
|
|
move(manager, cdp, address(this), toRad(wadD));
|
|
// Allows adapter to access to proxy's DAI balance in the vat
|
|
if (VatLike(vat).can(address(this), address(daiJoin)) == 0) {
|
|
VatLike(vat).hope(daiJoin);
|
|
}
|
|
// Exits DAI to the user's wallet as a token
|
|
DaiJoinLike(daiJoin).exit(msg.sender, wadD);
|
|
}
|
|
|
|
function openLockGemAndDraw(
|
|
address manager,
|
|
address jug,
|
|
address gemJoin,
|
|
address daiJoin,
|
|
bytes32 ilk,
|
|
uint wadC,
|
|
uint wadD,
|
|
bool transferFrom
|
|
) public returns (uint cdp) {
|
|
cdp = open(manager, ilk, address(this));
|
|
lockGemAndDraw(manager, jug, gemJoin, daiJoin, cdp, wadC, wadD, transferFrom);
|
|
}
|
|
}
|