Create AccessControl.sol

blockchain_integration/pi_network/features/security-and-integrity/AccessControl.sol

@@ -0,0 +1,44 @@
+pragma solidity ^0.8.0;
+
+contract AccessControl {
+    // Mapping of access control roles
+    mapping (address => Role) public roles;
+
+    // Struct to represent an access control role
+    struct Role {
+        address owner;
+        bytes32 role;
+        bool authorized;
+    }
+
+    // Event emitted when a new role is created
+    event NewRole(address indexed owner, bytes32 role);
+
+    // Event emitted when a role is updated
+    event UpdateRole(address indexed owner, bytes32 role);
+
+    // Function to create a new role
+    function createRole(bytes32 _role) public {
+        address owner = msg.sender;
+        Role storage role = roles[owner];
+        role.owner = owner;
+        role.role = _role;
+        role.authorized = true;
+        emit NewRole(owner, _role);
+    }
+
+    // Function to update a role
+    function updateRole(bytes32 _role) public {
+        address owner = msg.sender;
+        Role storage role = roles[owner];
+        require(role.owner == owner, "Unauthorized access");
+        role.role = _role;
+        emit UpdateRole(owner, _role);
+    }
+
+    // Function to check if a user has a specific role
+    function hasRole(address _owner, bytes32 _role) internal returns (bool) {
+        Role storage role = roles[_owner];
+        return role.role == _role && role.authorized;
+    }
+}