From 9d0ff75bf869574b5f96079cf5494fe11d20f160 Mon Sep 17 00:00:00 2001
From: zgzxx <zhangguangzhi3@huawei.com>
Date: Sat, 20 Mar 2021 17:27:36 +0800
Subject: [PATCH] fix wrong spelling and null pointer dereference issue


diff --git a/tools/codegener/intel/CodeGen.ml b/tools/codegener/intel/CodeGen.ml
index dc43942..d9ccf7c 100644
--- a/tools/codegener/intel/CodeGen.ml
+++ b/tools/codegener/intel/CodeGen.ml
@@ -872,7 +872,11 @@ let gen_func_uproxy (tf: Ast.trusted_func) (idx: int) (ec: enclave_content) =
   let sgx_ecall_fn = get_sgx_fname SGX_ECALL tf.Ast.tf_is_switchless in
 
   (* Normal case - do ECALL with marshaling structure*)
-  let ecall_with_ms = sprintf "result = enclave->list_ops_node->ops_desc->ops->cc_ecall_enclave( \n\
+  let ecall_with_ms = sprintf "if(!enclave || !enclave->list_ops_node || !enclave->list_ops_node->ops_desc ||\n\
+                    \t\t!enclave->list_ops_node->ops_desc->ops || \n\
+                    \t\t!enclave->list_ops_node->ops_desc->ops->cc_ecall_enclave)\n\
+                    \t\treturn CC_ERROR_BAD_PARAMETERS;
+        result = enclave->list_ops_node->ops_desc->ops->cc_ecall_enclave( \n\
                     \t\tenclave,\n\
                     \t\t%d,\n\
                     \t\tNULL,\n\
@@ -885,7 +889,11 @@ let gen_func_uproxy (tf: Ast.trusted_func) (idx: int) (ec: enclave_content) =
   (* Rare case - the trusted function doesn't have parameter nor return value.
    * In this situation, no marshaling structure is required - passing in NULL.
    *)
-  let ecall_null = sprintf "result = enclave->list_ops_node->ops_desc->ops->cc_ecall_enclave( \n\
+  let ecall_null = sprintf "if(!enclave || !enclave->list_ops_node || !enclave->list_ops_node->ops_desc ||\n\
+                    \t\t!enclave->list_ops_node->ops_desc->ops || \n\
+                    \t\t!enclave->list_ops_node->ops_desc->ops->cc_ecall_enclave)\n\
+                    \t\treturn CC_ERROR_BAD_PARAMETERS;
+        result = enclave->list_ops_node->ops_desc->ops->cc_ecall_enclave( \n\
                     \t\tenclave,\n\
                     \t\t%d,\n\
                     \t\tNULL,\n\
diff --git a/tools/codegener/intel/Util.ml b/tools/codegener/intel/Util.ml
index a77637e..9dd22bd 100644
--- a/tools/codegener/intel/Util.ml
+++ b/tools/codegener/intel/Util.ml
@@ -187,7 +187,7 @@ let get_file_path (fname: string) =
     try
       List.find Sys.file_exists fn_list
     with
-      Not_found -> failwithf "File not found within search paths or search paths is permisson denied: %s\n" fname
+      Not_found -> failwithf "File not found within search paths or search paths is permission denied: %s\n" fname
 
 (* Get the short name of the given file name.
  * ------------------------------------------
-- 
2.27.0