Code for 0xc3c2…6ba6

Since block 18112218

Verified contract

/**
 *Submitted for verification at Etherscan.io on 2019-04-25
*/

// guard.sol -- simple whitelist implementation of DSAuthority

// Copyright (C) 2017  DappHub, LLC

// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.

// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

pragma solidity ^0.4.13;

contract DSAuthority {
    function canCall(
        address src, address dst, bytes4 sig
    ) public view returns (bool);
}

contract DSAuthEvents {
    event LogSetAuthority (address indexed authority);
    event LogSetOwner     (address indexed owner);
}

contract DSGuardEvents {
    event LogPermit(
        bytes32 indexed src,
        bytes32 indexed dst,
        bytes32 indexed sig
    );

    event LogForbid(
        bytes32 indexed src,
        bytes32 indexed dst,
        bytes32 indexed sig
    );
}


contract DSAuth is DSAuthEvents {
    DSAuthority  public  authority;
    address      public  owner;

    function DSAuth() public {
        owner = msg.sender;
        LogSetOwner(msg.sender);
    }

    function setOwner(address owner_)
        public
        auth
    {
        owner = owner_;
        LogSetOwner(owner);
    }

    function setAuthority(DSAuthority authority_)
        public
        auth
    {
        authority = authority_;
        LogSetAuthority(authority);
    }

    modifier auth {
        require(isAuthorized(msg.sender, msg.sig));
        _;
    }

    function isAuthorized(address src, bytes4 sig) internal view returns (bool) {
        if (src == address(this)) {
            return true;
        } else if (src == owner) {
            return true;
        } else if (authority == DSAuthority(0)) {
            return false;
        } else {
            return authority.canCall(src, this, sig);
        }
    }
}

contract DSGuard is DSAuth, DSAuthority, DSGuardEvents {
    bytes32 constant public ANY = bytes32(uint(-1));

    mapping (bytes32 => mapping (bytes32 => mapping (bytes32 => bool))) acl;

    function canCall(
        address src_, address dst_, bytes4 sig
    ) public view returns (bool) {
        var src = bytes32(src_);
        var dst = bytes32(dst_);

        return acl[src][dst][sig]
            || acl[src][dst][ANY]
            || acl[src][ANY][sig]
            || acl[src][ANY][ANY]
            || acl[ANY][dst][sig]
            || acl[ANY][dst][ANY]
            || acl[ANY][ANY][sig]
            || acl[ANY][ANY][ANY];
    }

    function permit(bytes32 src, bytes32 dst, bytes32 sig) public auth {
        acl[src][dst][sig] = true;
        LogPermit(src, dst, sig);
    }

    function forbid(bytes32 src, bytes32 dst, bytes32 sig) public auth {
        acl[src][dst][sig] = false;
        LogForbid(src, dst, sig);
    }

    function permit(address src, address dst, bytes32 sig) public {
        permit(bytes32(src), bytes32(dst), sig);
    }
    function forbid(address src, address dst, bytes32 sig) public {
        forbid(bytes32(src), bytes32(dst), sig);
    }

}

contract DSGuardFactory {
    mapping (address => bool)  public  isGuard;

    function newGuard() public returns (DSGuard guard) {
        guard = new DSGuard();
        guard.setOwner(msg.sender);
        isGuard[guard] = true;
    }
}

Contract sourced from Etherscan. Solidity version v0.4.25+commit.59dbf8f1.

Panoramix decompilation

# Palkeoramix decompiler. 

const ANY = -1

def storage:
  authorityAddress is address at storage 0
  owner is address at storage 1
  stor2 is mapping of uint8 at storage 2

def owner(): # not payable
  return owner

def authority(): # not payable
  return authorityAddress

#
#  Regular functions
#

def _fallback(?) payable: # default function
  revert

def setOwner(address _newOwner): # not payable
  if this.address != caller:
      if owner != caller:
          require authorityAddress
          require ext_code.size(authorityAddress)
          call authorityAddress.canCall(address _src, address _dst, bytes4 _sig) with:
               gas gas_remaining wei
              args caller, address(this.address), call.func_hash
          if not ext_call.success:
              revert with ext_call.return_data[0 len return_data.size]
          require return_data.size >= 32
          require ext_call.return_data[0]
  owner = _newOwner
  log LogSetOwner(address owner=owner)

def setAuthority(address authority_): # not payable
  if this.address != caller:
      if owner != caller:
          require authorityAddress
          require ext_code.size(authorityAddress)
          call authorityAddress.canCall(address _src, address _dst, bytes4 _sig) with:
               gas gas_remaining wei
              args caller, address(this.address), call.func_hash
          if not ext_call.success:
              revert with ext_call.return_data[0 len return_data.size]
          require return_data.size >= 32
          require ext_call.return_data[0]
  authorityAddress = authority_
  log LogSetAuthority(address authority=authorityAddress)

def forbid(bytes32 src, bytes32 dst, bytes32 sig): # not payable
  if this.address != caller:
      if owner != caller:
          require authorityAddress
          require ext_code.size(authorityAddress)
          call authorityAddress.canCall(address _src, address _dst, bytes4 _sig) with:
               gas gas_remaining wei
              args caller, address(this.address), call.func_hash
          if not ext_call.success:
              revert with ext_call.return_data[0 len return_data.size]
          require return_data.size >= 32
          require ext_call.return_data[0]
  stor2[src][dst][sig] = 0
  log LogForbid(
        bytes32 src=src,
        bytes32 dst=dst,
        bytes32 sig=sig)

def permit(bytes32 src, bytes32 dst, bytes32 sig): # not payable
  if this.address != caller:
      if owner != caller:
          require authorityAddress
          require ext_code.size(authorityAddress)
          call authorityAddress.canCall(address _src, address _dst, bytes4 _sig) with:
               gas gas_remaining wei
              args caller, address(this.address), call.func_hash
          if not ext_call.success:
              revert with ext_call.return_data[0 len return_data.size]
          require return_data.size >= 32
          require ext_call.return_data[0]
  stor2[src][dst][sig] = 1
  log LogPermit(
        bytes32 src=src,
        bytes32 dst=dst,
        bytes32 sig=sig)

def forbid(address src, address dst, bytes32 sig): # not payable
  if this.address != caller:
      if owner != caller:
          require authorityAddress
          require ext_code.size(authorityAddress)
          call authorityAddress.canCall(address _src, address _dst, bytes4 _sig) with:
               gas gas_remaining wei
              args caller, address(this.address), call.func_hash
          if not ext_call.success:
              revert with ext_call.return_data[0 len return_data.size]
          require return_data.size >= 32
          require ext_call.return_data[0]
  stor2[address(src)][address(dst)][sig] = 0
  log LogForbid(
        bytes32 src=src,
        bytes32 dst=dst,
        bytes32 sig=sig)

def permit(address src, address dst, bytes32 sig): # not payable
  if this.address != caller:
      if owner != caller:
          require authorityAddress
          require ext_code.size(authorityAddress)
          call authorityAddress.canCall(address _src, address _dst, bytes4 _sig) with:
               gas gas_remaining wei
              args caller, address(this.address), call.func_hash
          if not ext_call.success:
              revert with ext_call.return_data[0 len return_data.size]
          require return_data.size >= 32
          require ext_call.return_data[0]
  stor2[address(src)][address(dst)][sig] = 1
  log LogPermit(
        bytes32 src=src,
        bytes32 dst=dst,
        bytes32 sig=sig)

def canCall(address _src, address _dst, bytes4 _sig): # not payable
  if stor2[address(_src)][address(_dst)][Mask(32, 224, _sig)]:
      return bool(stor2[address(_src)][address(_dst)][Mask(32, 224, _sig)])
  if stor2[address(_src)][address(_dst)][-1]:
      return bool(stor2[address(_src)][address(_dst)][-1])
  if stor2[address(_src)][-1][Mask(32, 224, _sig)]:
      return bool(stor2[address(_src)][-1][Mask(32, 224, _sig)])
  if stor2[address(_src)][-1][-1]:
      return bool(stor2[address(_src)][-1][-1])
  if stor2[-1][address(_dst)][Mask(32, 224, _sig)]:
      return bool(stor2[-1][address(_dst)][Mask(32, 224, _sig)])
  if stor2[-1][address(_dst)][-1]:
      return bool(stor2[-1][address(_dst)][-1])
  if stor2[-1][-1][Mask(32, 224, _sig)]:
      return bool(stor2[-1][-1][Mask(32, 224, _sig)])
  return bool(stor2[-1][-1][-1])

Decompilation generated by Panoramix.

Raw bytecode

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