From 99bf28fef1a5bb0f89919d1e5e722c9eace6826a Mon Sep 17 00:00:00 2001
From: Florian Pritz <bluewind@xinu.at>
Date: Sat, 28 Oct 2017 20:36:59 +0200
Subject: mysql: Enable full UTF8 support

Signed-off-by: Florian Pritz <bluewind@xinu.at>
---
 NEWS                                          |  3 +++
 application/config/example/database.php       |  6 +++---
 application/config/migration.php              |  2 +-
 application/migrations/021_change_charset.php | 27 +++++++++++++++++++++++++++
 4 files changed, 34 insertions(+), 4 deletions(-)
 create mode 100644 application/migrations/021_change_charset.php

diff --git a/NEWS b/NEWS
index 1b50055e7..fe86bcda5 100644
--- a/NEWS
+++ b/NEWS
@@ -8,6 +8,9 @@ This file lists major, incompatible or otherwise important changes, you should l
    - Changes in application/config/database.php
      + Change "$active_record = TRUE" to "$query_builder = TRUE"
      + Change the pconnect setting to FALSE
+	 + Change the char_set settign to "utf8mb4"
+	 + Change the dbcollat setting to "utf8mb4_bin"
+	 + Change the stricton setting to TRUE
    - Changes in application/config/config-local.php
      + Set base_url to your domain and installation directory
        (if used). Example: $config['base_url'] = "https://paste.xinu.at/"
diff --git a/application/config/example/database.php b/application/config/example/database.php
index b4cb64039..6b71bf60b 100644
--- a/application/config/example/database.php
+++ b/application/config/example/database.php
@@ -86,12 +86,12 @@ $db['default'] = array(
 	'db_debug' => TRUE,
 	'cache_on' => FALSE,
 	'cachedir' => '',
-	'char_set' => 'utf8',
-	'dbcollat' => 'utf8_general_ci',
+	'char_set' => 'utf8mb4',
+	'dbcollat' => 'utf8mb4_bin',
 	'swap_pre' => '',
 	'encrypt' => FALSE,
 	'compress' => FALSE,
-	'stricton' => FALSE,
+	'stricton' => TRUE,
 	'failover' => array(),
 	'save_queries' => TRUE
 );
diff --git a/application/config/migration.php b/application/config/migration.php
index 621a0eeb6..ffddae2ac 100644
--- a/application/config/migration.php
+++ b/application/config/migration.php
@@ -69,7 +69,7 @@ $config['migration_auto_latest'] = FALSE;
 | be upgraded / downgraded to.
 |
 */
-$config['migration_version'] = 20;
+$config['migration_version'] = 21;
 
 /*
 |--------------------------------------------------------------------------
diff --git a/application/migrations/021_change_charset.php b/application/migrations/021_change_charset.php
new file mode 100644
index 000000000..20a8ce7f7
--- /dev/null
+++ b/application/migrations/021_change_charset.php
@@ -0,0 +1,27 @@
+<?php
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+class Migration_change_charset extends CI_Migration {
+
+	public function up()
+	{
+		$prefix = $this->db->dbprefix;
+
+		if ($this->db->dbdriver == 'postgre') {
+			# nothing to do
+		} else {
+			$this->db->query('SET FOREIGN_KEY_CHECKS = 0');
+			foreach (['actions', 'apikeys', 'files', 'file_storage', 'multipaste', 'multipaste_file_map', 'profiles', 'users'] as $table) {
+				$this->db->query('
+					ALTER TABLE `'.$prefix.$table.'` CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_bin;
+				');
+			}
+			$this->db->query('SET FOREIGN_KEY_CHECKS = 1');
+		}
+	}
+
+	public function down()
+	{
+		throw new \exceptions\ApiException("migration/downgrade-not-supported", "downgrade not supported");
+	}
+}
-- 
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