Contract self calls

src/permissions/mod.rs

@@ -1,5 +1,8 @@
+mod private;
 mod superadmin;
 
 pub use crate::permissions::superadmin::{
     ensure_super_admin, is_super_admin, not_super_admin_error,
 };
+
+pub use crate::permissions::private::{ensure_private, not_self_contract_error};

src/permissions/private.rs

@@ -0,0 +1,16 @@
+use cosmwasm_std::{Addr, Env};
+use cosmwasm_std::{StdError, StdResult};
+
+const ERR_NOT_SELF_CONTRACT: &str = "[FET_ERR_NOT_SELF] Sender is not a self contract.";
+
+pub fn ensure_private(env: &Env, address: &Addr) -> StdResult<()> {
+    if env.contract.address != address {
+        return Err(not_self_contract_error());
+    }
+
+    Ok(())
+}
+
+pub fn not_self_contract_error() -> StdError {
+    StdError::generic_err(ERR_NOT_SELF_CONTRACT)
+}

src/permissions/superadmin.rs

@@ -3,7 +3,7 @@ use cosmwasm_std::{StdError, StdResult};
 
 const ERR_NOT_SUPER_ADMIN: &str = "[FET_ERR_NOT_SUPER_ADMIN] Sender is not a super-admin.";
 
-// Check if the address is admin of the contract, everyone cannot be admin of the contract
+// Check if the address is admin of the contract
 pub fn is_super_admin(deps: &Deps, env: &Env, address: &Addr) -> StdResult<bool> {
     // Check if the address is specified (opposite of the Everyone case)
     if let Some(admin_address) = deps