diff options
Diffstat (limited to 'engine/lib/upgrades/2010033101.php')
| -rw-r--r-- | engine/lib/upgrades/2010033101.php | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/engine/lib/upgrades/2010033101.php b/engine/lib/upgrades/2010033101.php new file mode 100644 index 000000000..4779295fd --- /dev/null +++ b/engine/lib/upgrades/2010033101.php @@ -0,0 +1,70 @@ +<?php + +/** + * Conditional upgrade for UTF8 as described in https://github.com/elgg/elgg/issues/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); + } + } + } +} |