Test for what Andrey has found with 16M packets

Author: Ulf Wendel

ext/mysqli/tests/mysqli_insert_packet_overflow.phpt

@@ -0,0 +1,93 @@
+--TEST--
+INSERT and packet overflow
+--SKIPIF--
+<?php
+require_once('skipif.inc');
+require_once('skipifconnectfailure.inc');
+?>
+--INI--
+memory_limit=256M
+--FILE--
+<?php
+	require('connect.inc');
+	if (!$link = my_mysqli_connect($host, $user, $passwd, $db, $port, $socket))
+		printf("[001] [%d] %s\n", mysqli_connect_errno(), mysqli_connect_error());
+
+	if (!$res = mysqli_query($link, "SHOW GLOBAL VARIABLES LIKE 'max_allowed_packet'"))
+		printf("[002] [%d] %s\n", mysqli_errno($link), mysqli_error($link));
+
+	if (!$row = mysqli_fetch_assoc($res))
+		printf("[003] [%d] %s\n", mysqli_errno($link), mysqli_error($link));
+
+	mysqli_free_result($res);
+
+	if (0 === ($org_max_allowed_packet = (int)$row['Value']))
+		printf("[004] Cannot determine max_allowed_packet size and/or bogus max_allowed_packet setting used.\n");
+
+	$max_len = pow(2, 24);
+	if ($org_max_allowed_packet < $max_len) {
+		if (!mysqli_query($link, "SET GLOBAL max_allowed_packet = " . ($max_len + 100)))
+			printf("[005] [%d] %s\n", mysqli_errno($link), mysqli_error($link));
+	}
+	mysqli_close($link);
+	if (!$link = my_mysqli_connect($host, $user, $passwd, $db, $port, $socket))
+		printf("[006] [%d] %s\n", mysqli_connect_errno(), mysqli_connect_error());
+
+	if (!$res = mysqli_query($link, "SHOW GLOBAL VARIABLES LIKE 'max_allowed_packet'"))
+		printf("[007] [%d] %s\n", mysqli_errno($link), mysqli_error($link));
+
+	if (!$row = mysqli_fetch_assoc($res))
+		printf("[008] [%d] %s\n", mysqli_errno($link), mysqli_error($link));
+
+	mysqli_free_result($res);
+
+	if (0 === ($max_allowed_packet = (int)$row['Value']))
+		printf("[009] Cannot determine max_allowed_packet size and/or bogus max_allowed_packet setting used.\n");
+
+	$max_len = pow(2, 24);
+	if ($max_allowed_packet < $max_len) {
+		printf("[010] Failed to change max_allowed_packet");
+	}
+
+	if (!mysqli_query($link, "CREATE TABLE test(col_blob LONGBLOB) ENGINE=" . $engine))
+		printf("[011] [%d] %s\n", mysqli_errno($link), mysqli_error($link));
+
+	$query_prefix = 'INSERT INTO test(col_blob) VALUES ("';
+	$query_postfix = '")';
+	$query_len = strlen($query_prefix) + strlen($query_postfix);
+	$com_query_len = 1;
+
+
+	$blob = str_repeat('a', $max_len - $com_query_len - $query_len);
+	$query = sprintf("%s%s%s", $query_prefix, $blob, $query_postfix);
+
+	if (!mysqli_query($link, $query))
+		printf("[012] [%d] %s\n", mysqli_errno($link), mysqli_error($link));
+
+	if (!$res = mysqli_query($link, "SELECT col_blob FROM test"))
+		printf("[013] [%d] %s\n", mysqli_errno($link), mysqli_error($link));
+
+	if (!$row = mysqli_fetch_assoc($res)) {
+		printf("[014] [%d] %s\n", mysqli_errno($link), mysqli_error($link));
+	} else {
+		if ($row['col_blob'] != $blob) {
+			printf("[015] Blob seems wrong, dumping data\n");
+			var_dump(strlen($row['col_blob']));
+			var_dump(strlen($blob));
+		}
+		mysqli_free_result($res);
+	}
+
+	if (!mysqli_query($link, "SET GLOBAL max_allowed_packet = " . $org_max_allowed_packet))
+		printf("[016] [%d] %s\n", mysqli_errno($link), mysqli_error($link));
+
+	mysqli_close($link);
+
+	print "done!";
+?>
+--CLEAN--
+<?php
+	require_once("clean_table.inc");
+?>
+--EXPECTF--
+done!