res_crypto: Perform cleanup at shutdown.

This change causes res_crypto to unregister CLI at shutdown while still
preventing the module from being unloaded.

ASTERISK-25673 #close

Change-Id: Ie5d57338dc2752abfc0dd05d0eec86413f2304fc

diff --git a/res/res_crypto.c b/res/res_crypto.c
index 2f0c67615dfde3b9f2b86191fa2f183e50f1fb2d..71604aab62ebdf9a64ff66dcc9bcb476422b3a53 100644 (file)
--- a/res/res_crypto.c
+++ b/res/res_crypto.c
@@ -652,13 +652,17 @@ static int load_module(void)
        } else {
                crypto_load(-1, -1);
        }
+
+       /* This prevents dlclose from ever running, but allows CLI cleanup at shutdown. */
+       ast_module_shutdown_ref(ast_module_info->self);
        return AST_MODULE_LOAD_SUCCESS;
 }
 
 static int unload_module(void)
 {
-       /* Can't unload this once we're loaded */
-       return -1;
+       ast_cli_unregister_multiple(cli_crypto, ARRAY_LEN(cli_crypto));
+
+       return 0;
 }
 
 /* needs usecount semantics defined */