[PHP-DEV] Re: [PHP-CVS] [php-src] master: ext/mysqlnd: support ER_CLIENT_INTERACTION_TIMEOUT

Hi,

I've left a comment on github, but perhaps it is best I also post here:

The commit is breaking several tests on doctrine/dbal. Spedifically 2 tests on the 3.8.x branch and 5 tests on the 4.0.x:

This could mean it is not working properly or it is not fully safe for 8.2 / 8.3.

Cheers

Il 10/04/2024 13:38, Appla via Kamil Tekiela ha scritto:

Author: Appla (Appla)
Committer: Kamil Tekiela (kamil-tekiela)
Date: 2024-04-10T13:33:04+02:00

Commit: ext/mysqlnd: support ER_CLIENT_INTERACTION_TIMEOUT · php/php-src@5035b85 · GitHub
Raw diff: https://github.com/php/php-src/commit/5035b8509016c4cf2cda883b4d3f245054a71626.diff

ext/mysqlnd: support ER_CLIENT_INTERACTION_TIMEOUT

Closes GH-13618.

Changed paths:
   A ext/mysqli/tests/bug81335.phpt
   M NEWS
   M ext/mysqlnd/mysqlnd_enum_n_def.h
   M ext/mysqlnd/mysqlnd_result.c
   M ext/mysqlnd/mysqlnd_wireprotocol.c

Diff:

diff --git a/NEWS b/NEWS
index bfd2617878d5f..e96e9bbc4fe06 100644
--- a/NEWS
+++ b/NEWS
@@ -16,6 +16,8 @@ PHP NEWS
    - MySQLnd:
    . Fix shift out of bounds on 32-bit non-fast-path platforms. (nielsdos)
+ . Fixed bug #81335 (PHP Warning, Packets out of order after connection
+ timeout). (Appla)
    - OpenSSL:
    . Fixed bug GH-10495 (feof on OpenSSL stream hangs indefinitely).
diff --git a/ext/mysqli/tests/bug81335.phpt b/ext/mysqli/tests/bug81335.phpt
new file mode 100644
index 0000000000000..26f6bcd7e2d14
--- /dev/null
+++ b/ext/mysqli/tests/bug81335.phpt
@@ -0,0 +1,34 @@
+--TEST--
+Bug #81335: Packets out of order after connection timeout
+--EXTENSIONS--
+mysqli
+--SKIPIF--
+<?php
+if (PHP_OS === 'WINNT') die('skip on windows');
+if (getenv("SKIP_SLOW_TESTS")) die("skip slow test");
+
+require_once 'connect.inc';
+if (!$link = @my_mysqli_connect($host, $user, $passwd, $db, $port, $socket)) die("skip cannot connect");
+if (mysqli_get_server_version($link) < 80024 || str_contains(mysqli_get_server_info($link), 'MariaDB')) {
+ die("skip: Due to many MySQL Server differences, the test requires >= 8.0.24");
+}
+?>
+--FILE--
+<?php
+
+require_once 'connect.inc';
+mysqli_report(MYSQLI_REPORT_ERROR | MYSQLI_REPORT_STRICT);
+$mysqli = new my_mysqli($host, $user, $passwd, $db, $port, $socket);
+$mysqli->query('SET WAIT_TIMEOUT=1');
+usleep(1000000 * 1.1);
+try {
+ $mysqli->query('SELECT 1 + 1');
+} catch(mysqli_sql_exception $e) {
+ echo $e->getMessage();
+ echo "\n";
+ echo $e->getCode();
+}
+?>
+--EXPECTF--
+The client was disconnected by the server because of inactivity. See wait_timeout and interactive_timeout for configuring this behavior.
+4031
diff --git a/ext/mysqlnd/mysqlnd_enum_n_def.h b/ext/mysqlnd/mysqlnd_enum_n_def.h
index 110e62c71bab0..00b46e8c7d22d 100644
--- a/ext/mysqlnd/mysqlnd_enum_n_def.h
+++ b/ext/mysqlnd/mysqlnd_enum_n_def.h
@@ -130,6 +130,7 @@
  #define CR_INVALID_PARAMETER_NO 2034
  #define CR_INVALID_BUFFER_USE 2035
  #define CR_LOAD_DATA_LOCAL_INFILE_REJECTED 2068
+#define CR_CLIENT_INTERACTION_TIMEOUT 4031
    #define MYSQLND_EE_FILENOTFOUND 7890
  diff --git a/ext/mysqlnd/mysqlnd_result.c b/ext/mysqlnd/mysqlnd_result.c
index 0331518d7d3d6..cf5013ed42d51 100644
--- a/ext/mysqlnd/mysqlnd_result.c
+++ b/ext/mysqlnd/mysqlnd_result.c
@@ -185,7 +185,7 @@ mysqlnd_query_read_result_set_header(MYSQLND_CONN_DATA * conn, MYSQLND_STMT * s)
      UPSERT_STATUS_SET_AFFECTED_ROWS_TO_ERROR(conn->upsert_status);
        if (FAIL == (ret = PACKET_READ(conn, &rset_header))) {
- if (conn->error_info->error_no != CR_SERVER_GONE_ERROR) {
+ if (conn->error_info->error_no != CR_SERVER_GONE_ERROR && conn->error_info->error_no != CR_CLIENT_INTERACTION_TIMEOUT) {
          php_error_docref(NULL, E_WARNING, "Error reading result set's header");
        }
        break;
diff --git a/ext/mysqlnd/mysqlnd_wireprotocol.c b/ext/mysqlnd/mysqlnd_wireprotocol.c
index fed191c74fa52..16ca9aaf29d42 100644
--- a/ext/mysqlnd/mysqlnd_wireprotocol.c
+++ b/ext/mysqlnd/mysqlnd_wireprotocol.c
@@ -267,6 +267,19 @@ mysqlnd_read_header(MYSQLND_PFC * pfc, MYSQLND_VIO * vio, MYSQLND_PACKET_HEADER
      pfc->data->packet_no++;
      DBG_RETURN(PASS);
    }
+ // @see https://dev.mysql.com/worklog/task/?id=12999
+ if (header->size > 0) {
+ zend_uchar *buf = mnd_emalloc(header->size);
+ if ((PASS == pfc->data->m.receive(pfc, vio, buf, header->size, conn_stats, error_info)) && buf[0] == ERROR_MARKER) {
+ php_mysqlnd_read_error_from_line(buf + 1, header->size - 1,
+ error_info->error, sizeof(error_info->error),
+ &error_info->error_no, error_info->sqlstate
+ );
+ mnd_efree(buf);
+ DBG_RETURN(FAIL);
+ }
+ mnd_efree(buf);
+ }
      DBG_ERR_FMT("Logical link: packets out of order. Expected %u received %u. Packet size=%zu",
          pfc->data->packet_no, header->packet_no, header->size);
@@ -294,7 +307,9 @@ mysqlnd_read_packet_header_and_body(MYSQLND_PACKET_HEADER * packet_header,
    DBG_INF_FMT("buf=%p size=%zu", buf, buf_size);
    if (FAIL == mysqlnd_read_header(pfc, vio, packet_header, stats, error_info)) {
      SET_CONNECTION_STATE(connection_state, CONN_QUIT_SENT);
- SET_CLIENT_ERROR(error_info, CR_SERVER_GONE_ERROR, UNKNOWN_SQLSTATE, mysqlnd_server_gone);
+ if (error_info->error_no == 0) {
+ SET_CLIENT_ERROR(error_info, CR_SERVER_GONE_ERROR, UNKNOWN_SQLSTATE, mysqlnd_server_gone);
+ }
      DBG_ERR_FMT("Can't read %s's header", packet_type_as_text);
      DBG_RETURN(FAIL);
    }

--
Matteo Beccati

Development & Consulting - http://www.beccati.com/