Merged 5530:5604 from 1.7 to trunk.

git-svn-id: http://code.elgg.org/elgg/trunk@5622 36083f99-b078-4883-b0ff-0f9b5a30f544

1 files changed, 65 insertions, 0 deletions

diff --git a/engine/lib/upgrades/2010033101.php b/engine/lib/upgrades/2010033101.php
new file mode 100644
index 000000000..b137e0285
--- /dev/null
+++ b/engine/lib/upgrades/2010033101.php
@@ -0,0 +1,65 @@
+<?php
+/*
+ * Conditional upgrade for UTF8 as described in http://trac.elgg.org/ticket/1928
+ */
+
+// get_version() returns the code version.
+// we want the DB version.
+$dbversion = (int) datalist_get('version');
+
+// 2009100701 was the utf8 upgrade for 1.7.
+// if we've already upgraded, don't try again.
+if ($dbversion < 2009100701) {
+	// if the default client connection is utf8 there is no reason
+	// to run this upgrade because the strings are already stored correctly.
+
+	// start a new link to the DB to see what its defaults are.
+	$link = mysql_connect($CONFIG->dbhost, $CONFIG->dbuser, $CONFIG->dbpass, TRUE);
+	mysql_select_db($CONFIG->dbname, $link);
+
+	$q = "SHOW VARIABLES LIKE 'character_set_client'";
+	$r = mysql_query($q);
+	$client = mysql_fetch_assoc($r);
+
+	$q = "SHOW VARIABLES LIKE 'character_set_connection'";
+	$r = mysql_query($q);
+	$connection = mysql_fetch_assoc($r);
+
+	// only run upgrade if not already talking utf8.
+	if ($client['Value'] != 'utf8' && $connection['Value'] != 'utf8') {
+		$qs = array();
+		$qs[] = "SET NAMES utf8";
+
+		$qs[] = "ALTER TABLE {$CONFIG->dbprefix}metastrings DISABLE KEYS";
+		$qs[] = "REPLACE INTO {$CONFIG->dbprefix}metastrings (id, string)
+			SELECT id, unhex(hex(convert(string using latin1)))
+			FROM {$CONFIG->dbprefix}metastrings";
+		$qs[] = "ALTER TABLE {$CONFIG->dbprefix}metastrings ENABLE KEYS";
+
+		$qs[] = "ALTER TABLE {$CONFIG->dbprefix}groups_entity DISABLE KEYS";
+		$qs[] = "REPLACE INTO {$CONFIG->dbprefix}groups_entity (guid, name, description)
+			SELECT guid, unhex(hex(convert(name using latin1))), unhex(hex(convert(description using latin1)))
+			FROM {$CONFIG->dbprefix}groups_entity";
+		$qs[] = "ALTER TABLE {$CONFIG->dbprefix}groups_entity ENABLE KEYS";
+
+		$qs[] = "ALTER TABLE {$CONFIG->dbprefix}objects_entity DISABLE KEYS";
+		$qs[] = "REPLACE INTO {$CONFIG->dbprefix}objects_entity (guid, title, description)
+			SELECT guid, unhex(hex(convert(title using latin1))), unhex(hex(convert(description using latin1)))
+			FROM {$CONFIG->dbprefix}objects_entity";
+		$qs[] = "ALTER TABLE {$CONFIG->dbprefix}objects_entity ENABLE KEYS";
+
+		$qs[] = "ALTER TABLE {$CONFIG->dbprefix}users_entity DISABLE KEYS";
+		$qs[] = "REPLACE INTO {$CONFIG->dbprefix}users_entity (guid, name, username, password, salt, email, language, code,
+			banned, last_action, prev_last_action, last_login, prev_last_login)
+				SELECT guid, unhex(hex(convert(name using latin1))), username, password, salt, email, language, code,
+					banned, last_action, prev_last_action, last_login, prev_last_login
+				FROM {$CONFIG->dbprefix}users_entity";
+		$qs[] = "ALTER TABLE {$CONFIG->dbprefix}users_entity ENABLE KEYS";
+
+		foreach ($qs as $q) {
+			if (!update_data($q)) {
+				throw new Exception('Couldn\'t execute upgrade query: ' . $q);
+			}
+		}
+	}
+}
\ No newline at end of file