Adding d/p/23_check_mysql_fix_error_handling from upstream

debian/patches/23_check_mysql_fix_error_handling

@@ -0,0 +1,28 @@
+From 10863265324a9a9fdf8ce771271af15b7e2f5a4a Mon Sep 17 00:00:00 2001
+From: Platon Pronko <platon7pronko@gmail.com>
+Date: Fri, 19 May 2023 15:05:02 +0800
+Subject: [PATCH] check_mysql: handle ER_ACCESS_DENIED_NO_PASSWORD_ERROR if
+ ignore_auth=1
+
+In some situations MySQL might return ER_ACCESS_DENIED_NO_PASSWORD_ERROR
+instead of ER_ACCESS_DENIED_ERROR. Semantically these errors are the same.
+---
+ plugins/check_mysql.c | 5 ++++-
+ 1 file changed, 4 insertions(+), 1 deletion(-)
+
+diff --git a/plugins/check_mysql.c b/plugins/check_mysql.c
+index 6cfa70edb..91e150fbd 100644
+--- a/plugins/check_mysql.c
++++ b/plugins/check_mysql.c
+@@ -138,7 +138,10 @@ main (int argc, char **argv)
+ 		mysql_ssl_set(&mysql,key,cert,ca_cert,ca_dir,ciphers);
+ 	/* establish a connection to the server and error checking */
+ 	if (!mysql_real_connect(&mysql,db_host,db_user,db_pass,db,db_port,db_socket,0)) {
+-		if (ignore_auth && mysql_errno (&mysql) == ER_ACCESS_DENIED_ERROR)
++		/* Depending on internally-selected auth plugin MySQL might return */
++		/* ER_ACCESS_DENIED_NO_PASSWORD_ERROR or ER_ACCESS_DENIED_ERROR. */
++		/* Semantically these errors are the same. */
++		if (ignore_auth && (mysql_errno (&mysql) == ER_ACCESS_DENIED_ERROR || mysql_errno (&mysql) == ER_ACCESS_DENIED_NO_PASSWORD_ERROR))
+ 		{
+ 			printf("MySQL OK - Version: %s (protocol %d)\n",
+ 				mysql_get_server_info(&mysql),

debian/patches/series

@@ -14,6 +14,7 @@
 20_chech_nt_fix_encoding
 21_check_pgsql_extra_output
 22_check_disk_avoid_mount
+23_check_mysql_fix_error_handling
 # feature patches
 30_check_radius_radcli_1.3.1_support
 31_checl_mailq_separate_submission_queue