lib-smtp: test-smtp-server-errors - Add tests for large series of empty and bad commands.

diff --git a/src/lib-smtp/test-smtp-server-errors.c b/src/lib-smtp/test-smtp-server-errors.c
index 13d3b97defd855dd20693f50ccf734c111e59b8d..f76bd5eb17199a0cc9785a6543864dcccc1bcfdf 100644 (file)
--- a/src/lib-smtp/test-smtp-server-errors.c
+++ b/src/lib-smtp/test-smtp-server-errors.c
@@ -573,6 +573,174 @@ static void test_bad_command(void)
        test_end();
 }
 
+/*
+ * Many bad commands
+ */
+
+/* client */
+
+struct _many_bad_commands_client {
+       struct smtp_reply_parser *parser;
+       unsigned int reply;
+       bool replied:1;
+};
+
+static void
+test_many_bad_commands_client_input(struct client_connection *conn)
+{
+       struct _many_bad_commands_client *ctx = conn->context;
+       struct smtp_reply *reply;
+       const char *error;
+       int ret;
+
+       while ((ret=smtp_reply_parse_next(ctx->parser, FALSE,
+                                         &reply, &error)) > 0) {
+               if (debug)
+                       i_debug("REPLY: %s", smtp_reply_log(reply));
+
+               switch (ctx->reply++) {
+               /* greeting */
+               case 0:
+                       i_assert(reply->status == 220);
+                       break;
+               /* bad command reply */
+               case 1: case 2: case 3: case 4: case 5:
+               case 6: case 7: case 8: case 9: case 10:
+                       i_assert(reply->status == 500);
+                       break;
+               case 11:
+                       i_assert(reply->status == 421);
+                       ctx->replied = TRUE;
+                       io_loop_stop(ioloop);
+                       connection_disconnect(&conn->conn);
+                       return;
+               default:
+                       i_unreached();
+               }
+       }
+
+       i_assert(ret >= 0);
+}
+
+static void
+test_many_bad_commands_client_connected(struct client_connection *conn)
+{
+       struct _many_bad_commands_client *ctx;
+
+       ctx = p_new(conn->pool, struct _many_bad_commands_client, 1);
+       ctx->parser = smtp_reply_parser_init(conn->conn.input, (size_t)-1);
+       conn->context = ctx;
+
+       switch (client_index) {
+       case 0:
+               o_stream_nsend_str(conn->conn.output,
+                                  "\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n");
+               break;
+       case 1:
+               o_stream_nsend_str(conn->conn.output,
+                                  "a\r\nb\r\nc\r\nd\r\ne\r\nf\r\ng\r\nh\r\n"
+                                  "i\r\nj\r\nk\r\nl\r\nm\r\nn\r\no\r\np\r\n");
+               break;
+       default:
+               i_unreached();
+       }
+}
+
+static void
+test_many_bad_commands_client_deinit(struct client_connection *conn)
+{
+       struct _many_bad_commands_client *ctx = conn->context;
+
+       i_assert(ctx->replied);
+       smtp_reply_parser_deinit(&ctx->parser);
+}
+
+static void test_client_many_bad_commands(unsigned int index)
+{
+       test_client_input = test_many_bad_commands_client_input;
+       test_client_connected = test_many_bad_commands_client_connected;
+       test_client_deinit = test_many_bad_commands_client_deinit;
+       test_client_run(index);
+}
+
+/* server */
+
+struct _many_bad_commands {
+       struct istream *payload_input;
+       struct io *io;
+
+       bool serviced:1;
+};
+
+static void
+test_server_many_bad_commands_disconnect(void *context ATTR_UNUSED,
+                                          const char *reason)
+{
+       if (debug)
+               i_debug("Disconnect: %s", reason);
+       io_loop_stop(ioloop);
+}
+
+static int
+test_server_many_bad_commands_helo(
+       void *conn_ctx ATTR_UNUSED, struct smtp_server_cmd_ctx *cmd ATTR_UNUSED,
+       struct smtp_server_cmd_helo *data ATTR_UNUSED)
+{
+       test_assert(FALSE);
+       return 1;
+}
+
+static int
+test_server_many_bad_commands_rcpt(
+       void *conn_ctx ATTR_UNUSED, struct smtp_server_cmd_ctx *cmd ATTR_UNUSED,
+       struct smtp_server_recipient *rcpt ATTR_UNUSED)
+{
+       test_assert(FALSE);
+       return 1;
+}
+
+static int
+test_server_many_bad_commands_data_begin(
+       void *conn_ctx ATTR_UNUSED, struct smtp_server_cmd_ctx *cmd ATTR_UNUSED,
+       struct smtp_server_transaction *trans ATTR_UNUSED,
+       struct istream *data_input ATTR_UNUSED)
+{
+       test_assert(FALSE);
+       return 1;
+}
+
+static void test_server_many_bad_commands
+(const struct smtp_server_settings *server_set)
+{
+       server_callbacks.conn_disconnect =
+               test_server_many_bad_commands_disconnect;
+
+       server_callbacks.conn_cmd_helo =
+               test_server_many_bad_commands_helo;
+       server_callbacks.conn_cmd_rcpt =
+               test_server_many_bad_commands_rcpt;
+       server_callbacks.conn_cmd_data_begin =
+               test_server_many_bad_commands_data_begin;
+       test_server_run(server_set);
+}
+
+/* test */
+
+static void test_many_bad_commands(void)
+{
+       struct smtp_server_settings smtp_server_set;
+
+       test_server_defaults(&smtp_server_set);
+       smtp_server_set.max_client_idle_time_msecs = 1000;
+       smtp_server_set.max_bad_commands = 10;
+
+       test_begin("many bad commands");
+       test_run_client_server(&smtp_server_set,
+               test_server_many_bad_commands,
+               test_client_many_bad_commands, 2);
+       test_end();
+}
+
 /*
  * Long command
  */
@@ -2551,6 +2719,7 @@ static void (*const test_functions[])(void) = {
        test_slow_client,
        test_hanging_command_payload,
        test_bad_command,
+       test_many_bad_commands,
        test_long_command,
        test_big_data,
        test_bad_ehlo,