evaluate: add cmd_evaluate_rename()

Make sure the table that we want to rename already exist. This is required by
the follow up patch that that adds chains to the cache.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

diff --git a/src/evaluate.c b/src/evaluate.c
index 8c161953da952a95e2651162a628802c7eedc6a7..511b71b5c4d0de7655cf8076fa1823b90f0203b4 100644 (file)
--- a/src/evaluate.c
+++ b/src/evaluate.c
@@ -1962,6 +1962,26 @@ static int cmd_evaluate_list(struct eval_ctx *ctx, struct cmd *cmd)
        }
 }
 
+static int cmd_evaluate_rename(struct eval_ctx *ctx, struct cmd *cmd)
+{
+       struct table *table;
+
+       switch (cmd->obj) {
+       case CMD_OBJ_CHAIN:
+               table = table_lookup(&ctx->cmd->handle);
+               if (table == NULL)
+                       return cmd_error(ctx, "Could not process rule: Table '%s' does not exist",
+                                        ctx->cmd->handle.table);
+               if (chain_lookup(table, &ctx->cmd->handle) == NULL)
+                       return cmd_error(ctx, "Could not process rule: Chain '%s' does not exist",
+                                        ctx->cmd->handle.chain);
+               break;
+       default:
+               BUG("invalid command object type %u\n", cmd->obj);
+       }
+       return 0;
+}
+
 enum {
        CMD_MONITOR_EVENT_ANY,
        CMD_MONITOR_EVENT_NEW,
@@ -2055,7 +2075,9 @@ int cmd_evaluate(struct eval_ctx *ctx, struct cmd *cmd)
        case CMD_LIST:
                return cmd_evaluate_list(ctx, cmd);
        case CMD_FLUSH:
+               return 0;
        case CMD_RENAME:
+               return cmd_evaluate_rename(ctx, cmd);
        case CMD_EXPORT:
        case CMD_DESCRIBE:
                return 0;