uci: tighten uci add operation error handling

- Return UBUS_STATUS_INVALID_ARGUMENT for invalid section or option names
- Return UBUS_STATUS_NOT_FOUND if a section name could not be resolved

Signed-off-by: Jo-Philipp Wich <jo@mein.io>

diff --git a/uci.c b/uci.c
index bb7adb034d11880bc45375de43cf173d5a515a08..5f26dbd625f309e3773784ce85f9db715e3cb963 100644 (file)
--- a/uci.c
+++ b/uci.c
@@ -687,7 +687,7 @@ rpc_uci_add(struct ubus_context *ctx, struct ubus_object *obj,
        struct uci_package *p = NULL;
        struct uci_section *s;
        struct uci_ptr ptr = { 0 };
-       int rem, rem2;
+       int rem, rem2, err = 0;
 
        blobmsg_parse(rpc_uci_add_policy, __RPC_A_MAX, tb,
                      blob_data(msg), blob_len(msg));
@@ -738,37 +738,68 @@ rpc_uci_add(struct ubus_context *ctx, struct ubus_object *obj,
                        ptr.option = blobmsg_name(cur);
 
                        if (!rpc_uci_verify_name(ptr.option))
+                       {
+                               if (!err)
+                                       err = UBUS_STATUS_INVALID_ARGUMENT;
+
                                continue;
+                       }
 
                        if (rpc_uci_lookup(&ptr) || !ptr.s)
+                       {
+                               if (!err)
+                                       err = UBUS_STATUS_NOT_FOUND;
+
                                continue;
+                       }
 
                        switch (blobmsg_type(cur))
                        {
                        case BLOBMSG_TYPE_ARRAY:
                                blobmsg_for_each_attr(elem, cur, rem2)
-                                       if (rpc_uci_format_blob(elem, &ptr.value))
-                                               uci_add_list(cursor, &ptr);
+                               {
+                                       if (!rpc_uci_format_blob(elem, &ptr.value))
+                                       {
+                                               if (!err)
+                                                       err = UBUS_STATUS_INVALID_ARGUMENT;
+
+                                               continue;
+                                       }
+
+                                       uci_add_list(cursor, &ptr);
+                               }
+
                                break;
 
                        default:
-                               if (rpc_uci_format_blob(cur, &ptr.value))
+                               if (!rpc_uci_format_blob(cur, &ptr.value))
+                               {
+                                       if (!err)
+                                               err = UBUS_STATUS_INVALID_ARGUMENT;
+                               }
+                               else
+                               {
                                        uci_set(cursor, &ptr);
+                               }
+
                                break;
                        }
                }
        }
 
-       uci_save(cursor, p);
+       if (!err)
+       {
+               uci_save(cursor, p);
 
-       blob_buf_init(&buf, 0);
-       blobmsg_add_string(&buf, "section", ptr.section);
-       ubus_send_reply(ctx, req, buf.head);
+               blob_buf_init(&buf, 0);
+               blobmsg_add_string(&buf, "section", ptr.section);
+               ubus_send_reply(ctx, req, buf.head);
+       }
 
 out:
        uci_unload(cursor, p);
 
-       return rpc_uci_status();
+       return err ? err : rpc_uci_status();
 }
 
 /*