includes/installer/MysqlUpdater.php

   1 <?php
   2 /**
   3  * MySQL-specific updater.
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  * http://www.gnu.org/copyleft/gpl.html
  19  *
  20  * @file
  21  * @ingroup Deployment
  22  */
  23 use Wikimedia\Rdbms\Field;
  24 use Wikimedia\Rdbms\MySQLField;
  25 use MediaWiki\MediaWikiServices;
  26
  27 /**
  28  * Mysql update list and mysql-specific update functions.
  29  *
  30  * @ingroup Deployment
  31  * @since 1.17
  32  */
  33 class MysqlUpdater extends DatabaseUpdater {
  34         protected function getCoreUpdateList() {
  35                 return [
  36                         [ 'disableContentHandlerUseDB' ],
  37
  38                         // 1.2
  39                         [ 'addField', 'ipblocks', 'ipb_id', 'patch-ipblocks.sql' ],
  40                         [ 'addField', 'ipblocks', 'ipb_expiry', 'patch-ipb_expiry.sql' ],
  41                         [ 'doInterwikiUpdate' ],
  42                         [ 'doIndexUpdate' ],
  43                         [ 'addField', 'recentchanges', 'rc_type', 'patch-rc_type.sql' ],
  44                         [ 'addIndex', 'recentchanges', 'new_name_timestamp', 'patch-rc-newindex.sql' ],
  45
  46                         // 1.3
  47                         [ 'addField', 'user', 'user_real_name', 'patch-user-realname.sql' ],
  48                         [ 'addTable', 'querycache', 'patch-querycache.sql' ],
  49                         [ 'addTable', 'objectcache', 'patch-objectcache.sql' ],
  50                         [ 'addTable', 'categorylinks', 'patch-categorylinks.sql' ],
  51                         [ 'doOldLinksUpdate' ],
  52                         [ 'doFixAncientImagelinks' ],
  53                         [ 'addField', 'recentchanges', 'rc_ip', 'patch-rc_ip.sql' ],
  54
  55                         // 1.4
  56                         [ 'addIndex', 'image', 'PRIMARY', 'patch-image_name_primary.sql' ],
  57                         [ 'addField', 'recentchanges', 'rc_id', 'patch-rc_id.sql' ],
  58                         [ 'addField', 'recentchanges', 'rc_patrolled', 'patch-rc-patrol.sql' ],
  59                         [ 'addTable', 'logging', 'patch-logging.sql' ],
  60                         [ 'addField', 'user', 'user_token', 'patch-user_token.sql' ],
  61                         [ 'addField', 'watchlist', 'wl_notificationtimestamp', 'patch-email-notification.sql' ],
  62                         [ 'doWatchlistUpdate' ],
  63                         [ 'dropField', 'user', 'user_emailauthenticationtimestamp',
  64                                 'patch-email-authentication.sql' ],
  65
  66                         // 1.5
  67                         [ 'doSchemaRestructuring' ],
  68                         [ 'addField', 'logging', 'log_params', 'patch-log_params.sql' ],
  69                         [ 'checkBin', 'logging', 'log_title', 'patch-logging-title.sql', ],
  70                         [ 'addField', 'archive', 'ar_rev_id', 'patch-archive-rev_id.sql' ],
  71                         [ 'addField', 'page', 'page_len', 'patch-page_len.sql' ],
  72                         [ 'dropField', 'revision', 'inverse_timestamp', 'patch-inverse_timestamp.sql' ],
  73                         [ 'addField', 'revision', 'rev_text_id', 'patch-rev_text_id.sql' ],
  74                         [ 'addField', 'revision', 'rev_deleted', 'patch-rev_deleted.sql' ],
  75                         [ 'addField', 'image', 'img_width', 'patch-img_width.sql' ],
  76                         [ 'addField', 'image', 'img_metadata', 'patch-img_metadata.sql' ],
  77                         [ 'addField', 'user', 'user_email_token', 'patch-user_email_token.sql' ],
  78                         [ 'addField', 'archive', 'ar_text_id', 'patch-archive-text_id.sql' ],
  79                         [ 'doNamespaceSize' ],
  80                         [ 'addField', 'image', 'img_media_type', 'patch-img_media_type.sql' ],
  81                         [ 'doPagelinksUpdate' ],
  82                         [ 'dropField', 'image', 'img_type', 'patch-drop_img_type.sql' ],
  83                         [ 'doUserUniqueUpdate' ],
  84                         [ 'doUserGroupsUpdate' ],
  85                         [ 'addField', 'site_stats', 'ss_total_pages', 'patch-ss_total_articles.sql' ],
  86                         [ 'addTable', 'user_newtalk', 'patch-usernewtalk2.sql' ],
  87                         [ 'addTable', 'transcache', 'patch-transcache.sql' ],
  88                         [ 'addField', 'interwiki', 'iw_trans', 'patch-interwiki-trans.sql' ],
  89
  90                         // 1.6
  91                         [ 'doWatchlistNull' ],
  92                         [ 'addIndex', 'logging', 'times', 'patch-logging-times-index.sql' ],
  93                         [ 'addField', 'ipblocks', 'ipb_range_start', 'patch-ipb_range_start.sql' ],
  94                         [ 'doPageRandomUpdate' ],
  95                         [ 'addField', 'user', 'user_registration', 'patch-user_registration.sql' ],
  96                         [ 'doTemplatelinksUpdate' ],
  97                         [ 'addTable', 'externallinks', 'patch-externallinks.sql' ],
  98                         [ 'addTable', 'job', 'patch-job.sql' ],
  99                         [ 'addField', 'site_stats', 'ss_images', 'patch-ss_images.sql' ],
 100                         [ 'addTable', 'langlinks', 'patch-langlinks.sql' ],
 101                         [ 'addTable', 'querycache_info', 'patch-querycacheinfo.sql' ],
 102                         [ 'addTable', 'filearchive', 'patch-filearchive.sql' ],
 103                         [ 'addField', 'ipblocks', 'ipb_anon_only', 'patch-ipb_anon_only.sql' ],
 104                         [ 'addIndex', 'recentchanges', 'rc_ns_usertext', 'patch-recentchanges-utindex.sql' ],
 105                         [ 'addIndex', 'recentchanges', 'rc_user_text', 'patch-rc_user_text-index.sql' ],
 106
 107                         // 1.9
 108                         [ 'addField', 'user', 'user_newpass_time', 'patch-user_newpass_time.sql' ],
 109                         [ 'addTable', 'redirect', 'patch-redirect.sql' ],
 110                         [ 'addTable', 'querycachetwo', 'patch-querycachetwo.sql' ],
 111                         [ 'addField', 'ipblocks', 'ipb_enable_autoblock', 'patch-ipb_optional_autoblock.sql' ],
 112                         [ 'doBacklinkingIndicesUpdate' ],
 113                         [ 'addField', 'recentchanges', 'rc_old_len', 'patch-rc_len.sql' ],
 114                         [ 'addField', 'user', 'user_editcount', 'patch-user_editcount.sql' ],
 115
 116                         // 1.10
 117                         [ 'doRestrictionsUpdate' ],
 118                         [ 'addField', 'logging', 'log_id', 'patch-log_id.sql' ],
 119                         [ 'addField', 'revision', 'rev_parent_id', 'patch-rev_parent_id.sql' ],
 120                         [ 'addField', 'page_restrictions', 'pr_id', 'patch-page_restrictions_sortkey.sql' ],
 121                         [ 'addField', 'revision', 'rev_len', 'patch-rev_len.sql' ],
 122                         [ 'addField', 'recentchanges', 'rc_deleted', 'patch-rc_deleted.sql' ],
 123                         [ 'addField', 'logging', 'log_deleted', 'patch-log_deleted.sql' ],
 124                         [ 'addField', 'archive', 'ar_deleted', 'patch-ar_deleted.sql' ],
 125                         [ 'addField', 'ipblocks', 'ipb_deleted', 'patch-ipb_deleted.sql' ],
 126                         [ 'addField', 'filearchive', 'fa_deleted', 'patch-fa_deleted.sql' ],
 127                         [ 'addField', 'archive', 'ar_len', 'patch-ar_len.sql' ],
 128
 129                         // 1.11
 130                         [ 'addField', 'ipblocks', 'ipb_block_email', 'patch-ipb_emailban.sql' ],
 131                         [ 'doCategorylinksIndicesUpdate' ],
 132                         [ 'addField', 'oldimage', 'oi_metadata', 'patch-oi_metadata.sql' ],
 133                         [ 'addIndex', 'archive', 'usertext_timestamp', 'patch-archive-user-index.sql' ],
 134                         [ 'addIndex', 'image', 'img_usertext_timestamp', 'patch-image-user-index.sql' ],
 135                         [ 'addIndex', 'oldimage', 'oi_usertext_timestamp', 'patch-oldimage-user-index.sql' ],
 136                         [ 'addField', 'archive', 'ar_page_id', 'patch-archive-page_id.sql' ],
 137                         [ 'addField', 'image', 'img_sha1', 'patch-img_sha1.sql' ],
 138
 139                         // 1.12
 140                         [ 'addTable', 'protected_titles', 'patch-protected_titles.sql' ],
 141
 142                         // 1.13
 143                         [ 'addField', 'ipblocks', 'ipb_by_text', 'patch-ipb_by_text.sql' ],
 144                         [ 'addTable', 'page_props', 'patch-page_props.sql' ],
 145                         [ 'addTable', 'updatelog', 'patch-updatelog.sql' ],
 146                         [ 'addTable', 'category', 'patch-category.sql' ],
 147                         [ 'doCategoryPopulation' ],
 148                         [ 'addField', 'archive', 'ar_parent_id', 'patch-ar_parent_id.sql' ],
 149                         [ 'addField', 'user_newtalk', 'user_last_timestamp', 'patch-user_last_timestamp.sql' ],
 150                         [ 'doPopulateParentId' ],
 151                         [ 'checkBin', 'protected_titles', 'pt_title', 'patch-pt_title-encoding.sql', ],
 152                         [ 'doMaybeProfilingMemoryUpdate' ],
 153                         [ 'doFilearchiveIndicesUpdate' ],
 154
 155                         // 1.14
 156                         [ 'addField', 'site_stats', 'ss_active_users', 'patch-ss_active_users.sql' ],
 157                         [ 'doActiveUsersInit' ],
 158                         [ 'addField', 'ipblocks', 'ipb_allow_usertalk', 'patch-ipb_allow_usertalk.sql' ],
 159
 160                         // 1.15
 161                         [ 'addTable', 'change_tag', 'patch-change_tag.sql' ],
 162                         [ 'addTable', 'tag_summary', 'patch-tag_summary.sql' ],
 163                         [ 'addTable', 'valid_tag', 'patch-valid_tag.sql' ],
 164
 165                         // 1.16
 166                         [ 'addTable', 'user_properties', 'patch-user_properties.sql' ],
 167                         [ 'addTable', 'log_search', 'patch-log_search.sql' ],
 168                         [ 'addField', 'logging', 'log_user_text', 'patch-log_user_text.sql' ],
 169                         # listed separately from the previous update because 1.16 was released without this update
 170                         [ 'doLogUsertextPopulation' ],
 171                         [ 'doLogSearchPopulation' ],
 172                         [ 'addTable', 'l10n_cache', 'patch-l10n_cache.sql' ],
 173                         [ 'addIndex', 'log_search', 'ls_field_val', 'patch-log_search-rename-index.sql' ],
 174                         [ 'addIndex', 'change_tag', 'change_tag_rc_tag', 'patch-change_tag-indexes.sql' ],
 175                         [ 'addField', 'redirect', 'rd_interwiki', 'patch-rd_interwiki.sql' ],
 176                         [ 'doUpdateTranscacheField' ],
 177                         [ 'doUpdateMimeMinorField' ],
 178
 179                         // 1.17
 180                         [ 'addTable', 'iwlinks', 'patch-iwlinks.sql' ],
 181                         [ 'addIndex', 'iwlinks', 'iwl_prefix_title_from', 'patch-rename-iwl_prefix.sql' ],
 182                         [ 'addField', 'updatelog', 'ul_value', 'patch-ul_value.sql' ],
 183                         [ 'addField', 'interwiki', 'iw_api', 'patch-iw_api_and_wikiid.sql' ],
 184                         [ 'dropIndex', 'iwlinks', 'iwl_prefix', 'patch-kill-iwl_prefix.sql' ],
 185                         [ 'addField', 'categorylinks', 'cl_collation', 'patch-categorylinks-better-collation.sql' ],
 186                         [ 'doClFieldsUpdate' ],
 187                         [ 'addTable', 'module_deps', 'patch-module_deps.sql' ],
 188                         [ 'dropIndex', 'archive', 'ar_page_revid', 'patch-archive_kill_ar_page_revid.sql' ],
 189                         [ 'addIndex', 'archive', 'ar_revid', 'patch-archive_ar_revid.sql' ],
 190                         [ 'doLangLinksLengthUpdate' ],
 191
 192                         // 1.18
 193                         [ 'doUserNewTalkTimestampNotNull' ],
 194                         [ 'addIndex', 'user', 'user_email', 'patch-user_email_index.sql' ],
 195                         [ 'modifyField', 'user_properties', 'up_property', 'patch-up_property.sql' ],
 196                         [ 'addTable', 'uploadstash', 'patch-uploadstash.sql' ],
 197                         [ 'addTable', 'user_former_groups', 'patch-user_former_groups.sql' ],
 198
 199                         // 1.19
 200                         [ 'addIndex', 'logging', 'type_action', 'patch-logging-type-action-index.sql' ],
 201                         [ 'addField', 'revision', 'rev_sha1', 'patch-rev_sha1.sql' ],
 202                         [ 'doMigrateUserOptions' ],
 203                         [ 'dropField', 'user', 'user_options', 'patch-drop-user_options.sql' ],
 204                         [ 'addField', 'archive', 'ar_sha1', 'patch-ar_sha1.sql' ],
 205                         [ 'addIndex', 'page', 'page_redirect_namespace_len',
 206                                 'patch-page_redirect_namespace_len.sql' ],
 207                         [ 'addField', 'uploadstash', 'us_chunk_inx', 'patch-uploadstash_chunk.sql' ],
 208                         [ 'addfield', 'job', 'job_timestamp', 'patch-jobs-add-timestamp.sql' ],
 209
 210                         // 1.20
 211                         [ 'addIndex', 'revision', 'page_user_timestamp', 'patch-revision-user-page-index.sql' ],
 212                         [ 'addField', 'ipblocks', 'ipb_parent_block_id', 'patch-ipb-parent-block-id.sql' ],
 213                         [ 'addIndex', 'ipblocks', 'ipb_parent_block_id', 'patch-ipb-parent-block-id-index.sql' ],
 214                         [ 'dropField', 'category', 'cat_hidden', 'patch-cat_hidden.sql' ],
 215
 216                         // 1.21
 217                         [ 'addField', 'revision', 'rev_content_format', 'patch-revision-rev_content_format.sql' ],
 218                         [ 'addField', 'revision', 'rev_content_model', 'patch-revision-rev_content_model.sql' ],
 219                         [ 'addField', 'archive', 'ar_content_format', 'patch-archive-ar_content_format.sql' ],
 220                         [ 'addField', 'archive', 'ar_content_model', 'patch-archive-ar_content_model.sql' ],
 221                         [ 'addField', 'page', 'page_content_model', 'patch-page-page_content_model.sql' ],
 222                         [ 'enableContentHandlerUseDB' ],
 223                         [ 'dropField', 'site_stats', 'ss_admins', 'patch-drop-ss_admins.sql' ],
 224                         [ 'dropField', 'recentchanges', 'rc_moved_to_title', 'patch-rc_moved.sql' ],
 225                         [ 'addTable', 'sites', 'patch-sites.sql' ],
 226                         [ 'addField', 'filearchive', 'fa_sha1', 'patch-fa_sha1.sql' ],
 227                         [ 'addField', 'job', 'job_token', 'patch-job_token.sql' ],
 228                         [ 'addField', 'job', 'job_attempts', 'patch-job_attempts.sql' ],
 229                         [ 'doEnableProfiling' ],
 230                         [ 'addField', 'uploadstash', 'us_props', 'patch-uploadstash-us_props.sql' ],
 231                         [ 'modifyField', 'user_groups', 'ug_group', 'patch-ug_group-length-increase-255.sql' ],
 232                         [ 'modifyField', 'user_former_groups', 'ufg_group',
 233                                 'patch-ufg_group-length-increase-255.sql' ],
 234                         [ 'addIndex', 'page_props', 'pp_propname_page',
 235                                 'patch-page_props-propname-page-index.sql' ],
 236                         [ 'addIndex', 'image', 'img_media_mime', 'patch-img_media_mime-index.sql' ],
 237
 238                         // 1.22
 239                         [ 'doIwlinksIndexNonUnique' ],
 240                         [ 'addIndex', 'iwlinks', 'iwl_prefix_from_title',
 241                                 'patch-iwlinks-from-title-index.sql' ],
 242                         [ 'addField', 'archive', 'ar_id', 'patch-archive-ar_id.sql' ],
 243                         [ 'addField', 'externallinks', 'el_id', 'patch-externallinks-el_id.sql' ],
 244
 245                         // 1.23
 246                         [ 'addField', 'recentchanges', 'rc_source', 'patch-rc_source.sql' ],
 247                         [ 'addIndex', 'logging', 'log_user_text_type_time',
 248                                 'patch-logging_user_text_type_time_index.sql' ],
 249                         [ 'addIndex', 'logging', 'log_user_text_time', 'patch-logging_user_text_time_index.sql' ],
 250                         [ 'addField', 'page', 'page_links_updated', 'patch-page_links_updated.sql' ],
 251                         [ 'addField', 'user', 'user_password_expires', 'patch-user_password_expire.sql' ],
 252
 253                         // 1.24
 254                         [ 'addField', 'page_props', 'pp_sortkey', 'patch-pp_sortkey.sql' ],
 255                         [ 'dropField', 'recentchanges', 'rc_cur_time', 'patch-drop-rc_cur_time.sql' ],
 256                         [ 'addIndex', 'watchlist', 'wl_user_notificationtimestamp',
 257                                 'patch-watchlist-user-notificationtimestamp-index.sql' ],
 258                         [ 'addField', 'page', 'page_lang', 'patch-page_lang.sql' ],
 259                         [ 'addField', 'pagelinks', 'pl_from_namespace', 'patch-pl_from_namespace.sql' ],
 260                         [ 'addField', 'templatelinks', 'tl_from_namespace', 'patch-tl_from_namespace.sql' ],
 261                         [ 'addField', 'imagelinks', 'il_from_namespace', 'patch-il_from_namespace.sql' ],
 262                         [ 'modifyField', 'image', 'img_major_mime',
 263                                 'patch-img_major_mime-chemical.sql' ],
 264                         [ 'modifyField', 'oldimage', 'oi_major_mime',
 265                                 'patch-oi_major_mime-chemical.sql' ],
 266                         [ 'modifyField', 'filearchive', 'fa_major_mime',
 267                                 'patch-fa_major_mime-chemical.sql' ],
 268
 269                         // 1.25
 270                         [ 'doUserNewTalkUseridUnsigned' ],
 271                         // note this patch covers other _comment and _description fields too
 272                         [ 'modifyField', 'recentchanges', 'rc_comment', 'patch-editsummary-length.sql' ],
 273
 274                         // 1.26
 275                         [ 'dropTable', 'hitcounter' ],
 276                         [ 'dropField', 'site_stats', 'ss_total_views', 'patch-drop-ss_total_views.sql' ],
 277                         [ 'dropField', 'page', 'page_counter', 'patch-drop-page_counter.sql' ],
 278
 279                         // 1.27
 280                         [ 'dropTable', 'msg_resource_links' ],
 281                         [ 'dropTable', 'msg_resource' ],
 282                         [ 'addTable', 'bot_passwords', 'patch-bot_passwords.sql' ],
 283                         [ 'addField', 'watchlist', 'wl_id', 'patch-watchlist-wl_id.sql' ],
 284                         [ 'dropIndex', 'categorylinks', 'cl_collation', 'patch-kill-cl_collation_index.sql' ],
 285                         [ 'addIndex', 'categorylinks', 'cl_collation_ext',
 286                                 'patch-add-cl_collation_ext_index.sql' ],
 287                         [ 'doCollationUpdate' ],
 288
 289                         // 1.28
 290                         [ 'addIndex', 'recentchanges', 'rc_name_type_patrolled_timestamp',
 291                                 'patch-add-rc_name_type_patrolled_timestamp_index.sql' ],
 292                         [ 'doRevisionPageRevIndexNonUnique' ],
 293                         [ 'doNonUniquePlTlIl' ],
 294                         [ 'addField', 'change_tag', 'ct_id', 'patch-change_tag-ct_id.sql' ],
 295                         [ 'addField', 'tag_summary', 'ts_id', 'patch-tag_summary-ts_id.sql' ],
 296                         [ 'modifyField', 'recentchanges', 'rc_ip', 'patch-rc_ip_modify.sql' ],
 297
 298                         // 1.29
 299                         [ 'addField', 'externallinks', 'el_index_60', 'patch-externallinks-el_index_60.sql' ],
 300                         [ 'dropIndex', 'user_groups', 'ug_user_group', 'patch-user_groups-primary-key.sql' ],
 301                         [ 'addField', 'user_groups', 'ug_expiry', 'patch-user_groups-ug_expiry.sql' ],
 302                         [ 'addIndex', 'image', 'img_user_timestamp', 'patch-image-user-index-2.sql' ],
 303                 ];
 304         }
 305
 306         /**
 307          * 1.4 betas were missing the 'binary' marker from logging.log_title,
 308          * which causes a collation mismatch error on joins in MySQL 4.1.
 309          *
 310          * @param string $table Table name
 311          * @param string $field Field name to check
 312          * @param string $patchFile Path to the patch to correct the field
 313          * @return bool
 314          */
 315         protected function checkBin( $table, $field, $patchFile ) {
 316                 if ( !$this->doTable( $table ) ) {
 317                         return true;
 318                 }
 319
 320                 /** @var MySQLField $fieldInfo */
 321                 $fieldInfo = $this->db->fieldInfo( $table, $field );
 322                 if ( $fieldInfo->isBinary() ) {
 323                         $this->output( "...$table table has correct $field encoding.\n" );
 324                 } else {
 325                         $this->applyPatch( $patchFile, false, "Fixing $field encoding on $table table" );
 326                 }
 327         }
 328
 329         /**
 330          * Check whether an index contain a field
 331          *
 332          * @param string $table Table name
 333          * @param string $index Index name to check
 334          * @param string $field Field that should be in the index
 335          * @return bool
 336          */
 337         protected function indexHasField( $table, $index, $field ) {
 338                 if ( !$this->doTable( $table ) ) {
 339                         return true;
 340                 }
 341
 342                 $info = $this->db->indexInfo( $table, $index, __METHOD__ );
 343                 if ( $info ) {
 344                         foreach ( $info as $row ) {
 345                                 if ( $row->Column_name == $field ) {
 346                                         $this->output( "...index $index on table $table includes field $field.\n" );
 347
 348                                         return true;
 349                                 }
 350                         }
 351                 }
 352                 $this->output( "...index $index on table $table has no field $field; added.\n" );
 353
 354                 return false;
 355         }
 356
 357         /**
 358          * Check that interwiki table exists; if it doesn't source it
 359          */
 360         protected function doInterwikiUpdate() {
 361                 global $IP;
 362
 363                 if ( !$this->doTable( 'interwiki' ) ) {
 364                         return true;
 365                 }
 366
 367                 if ( $this->db->tableExists( "interwiki", __METHOD__ ) ) {
 368                         $this->output( "...already have interwiki table\n" );
 369
 370                         return;
 371                 }
 372
 373                 $this->applyPatch( 'patch-interwiki.sql', false, 'Creating interwiki table' );
 374                 $this->applyPatch(
 375                         "$IP/maintenance/interwiki.sql",
 376                         true,
 377                         'Adding default interwiki definitions'
 378                 );
 379         }
 380
 381         /**
 382          * Check that proper indexes are in place
 383          */
 384         protected function doIndexUpdate() {
 385                 $meta = $this->db->fieldInfo( 'recentchanges', 'rc_timestamp' );
 386                 if ( $meta === false ) {
 387                         throw new MWException( 'Missing rc_timestamp field of recentchanges table. Should not happen.' );
 388                 }
 389                 if ( $meta->isMultipleKey() ) {
 390                         $this->output( "...indexes seem up to 20031107 standards.\n" );
 391
 392                         return;
 393                 }
 394
 395                 $this->applyPatch( 'patch-indexes.sql', true, "Updating indexes to 20031107" );
 396         }
 397
 398         protected function doOldLinksUpdate() {
 399                 $cl = $this->maintenance->runChild( 'ConvertLinks' );
 400                 $cl->execute();
 401         }
 402
 403         protected function doFixAncientImagelinks() {
 404                 $info = $this->db->fieldInfo( 'imagelinks', 'il_from' );
 405                 if ( !$info || $info->type() !== 'string' ) {
 406                         $this->output( "...il_from OK\n" );
 407
 408                         return;
 409                 }
 410
 411                 $applied = $this->applyPatch(
 412                         'patch-fix-il_from.sql',
 413                         false,
 414                         'Fixing ancient broken imagelinks table.'
 415                 );
 416
 417                 if ( $applied ) {
 418                         $this->output( "NOTE: you will have to run maintenance/refreshLinks.php after this." );
 419                 }
 420         }
 421
 422         /**
 423          * Check if we need to add talk page rows to the watchlist
 424          */
 425         function doWatchlistUpdate() {
 426                 $talk = $this->db->selectField( 'watchlist', 'count(*)', 'wl_namespace & 1', __METHOD__ );
 427                 $nontalk = $this->db->selectField(
 428                         'watchlist',
 429                         'count(*)',
 430                         'NOT (wl_namespace & 1)',
 431                         __METHOD__
 432                 );
 433                 if ( $talk == $nontalk ) {
 434                         $this->output( "...watchlist talk page rows already present.\n" );
 435
 436                         return;
 437                 }
 438
 439                 $this->output( "Adding missing watchlist talk page rows... " );
 440                 $this->db->insertSelect( 'watchlist', 'watchlist',
 441                         [
 442                                 'wl_user' => 'wl_user',
 443                                 'wl_namespace' => 'wl_namespace | 1',
 444                                 'wl_title' => 'wl_title',
 445                                 'wl_notificationtimestamp' => 'wl_notificationtimestamp'
 446                         ], [ 'NOT (wl_namespace & 1)' ], __METHOD__, 'IGNORE' );
 447                 $this->output( "done.\n" );
 448
 449                 $this->output( "Adding missing watchlist subject page rows... " );
 450                 $this->db->insertSelect( 'watchlist', 'watchlist',
 451                         [
 452                                 'wl_user' => 'wl_user',
 453                                 'wl_namespace' => 'wl_namespace & ~1',
 454                                 'wl_title' => 'wl_title',
 455                                 'wl_notificationtimestamp' => 'wl_notificationtimestamp'
 456                         ], [ 'wl_namespace & 1' ], __METHOD__, 'IGNORE' );
 457                 $this->output( "done.\n" );
 458         }
 459
 460         function doSchemaRestructuring() {
 461                 if ( $this->db->tableExists( 'page', __METHOD__ ) ) {
 462                         $this->output( "...page table already exists.\n" );
 463
 464                         return;
 465                 }
 466
 467                 $this->output( "...converting from cur/old to page/revision/text DB structure.\n" );
 468                 $this->output( wfTimestamp( TS_DB ) );
 469                 $this->output( "......checking for duplicate entries.\n" );
 470
 471                 list( $cur, $old, $page, $revision, $text ) = $this->db->tableNamesN(
 472                         'cur',
 473                         'old',
 474                         'page',
 475                         'revision',
 476                         'text'
 477                 );
 478
 479                 $rows = $this->db->query( "
 480                         SELECT cur_title, cur_namespace, COUNT(cur_namespace) AS c
 481                         FROM $cur
 482                         GROUP BY cur_title, cur_namespace
 483                         HAVING c>1",
 484                         __METHOD__
 485                 );
 486
 487                 if ( $rows->numRows() > 0 ) {
 488                         $this->output( wfTimestamp( TS_DB ) );
 489                         $this->output( "......<b>Found duplicate entries</b>\n" );
 490                         $this->output( sprintf( "<b>      %-60s %3s %5s</b>\n", 'Title', 'NS', 'Count' ) );
 491                         $duplicate = [];
 492                         foreach ( $rows as $row ) {
 493                                 if ( !isset( $duplicate[$row->cur_namespace] ) ) {
 494                                         $duplicate[$row->cur_namespace] = [];
 495                                 }
 496
 497                                 $duplicate[$row->cur_namespace][] = $row->cur_title;
 498                                 $this->output( sprintf(
 499                                         "      %-60s %3s %5s\n",
 500                                         $row->cur_title, $row->cur_namespace,
 501                                         $row->c
 502                                 ) );
 503                         }
 504                         $sql = "SELECT cur_title, cur_namespace, cur_id, cur_timestamp FROM $cur WHERE ";
 505                         $firstCond = true;
 506                         foreach ( $duplicate as $ns => $titles ) {
 507                                 if ( $firstCond ) {
 508                                         $firstCond = false;
 509                                 } else {
 510                                         $sql .= ' OR ';
 511                                 }
 512                                 $sql .= "( cur_namespace = {$ns} AND cur_title in (";
 513                                 $first = true;
 514                                 foreach ( $titles as $t ) {
 515                                         if ( $first ) {
 516                                                 $sql .= $this->db->addQuotes( $t );
 517                                                 $first = false;
 518                                         } else {
 519                                                 $sql .= ', ' . $this->db->addQuotes( $t );
 520                                         }
 521                                 }
 522                                 $sql .= ") ) \n";
 523                         }
 524                         # By sorting descending, the most recent entry will be the first in the list.
 525                         # All following entries will be deleted by the next while-loop.
 526                         $sql .= 'ORDER BY cur_namespace, cur_title, cur_timestamp DESC';
 527
 528                         $rows = $this->db->query( $sql, __METHOD__ );
 529
 530                         $prev_title = $prev_namespace = false;
 531                         $deleteId = [];
 532
 533                         foreach ( $rows as $row ) {
 534                                 if ( $prev_title == $row->cur_title && $prev_namespace == $row->cur_namespace ) {
 535                                         $deleteId[] = $row->cur_id;
 536                                 }
 537                                 $prev_title = $row->cur_title;
 538                                 $prev_namespace = $row->cur_namespace;
 539                         }
 540                         $sql = "DELETE FROM $cur WHERE cur_id IN ( " . implode( ',', $deleteId ) . ')';
 541                         $this->db->query( $sql, __METHOD__ );
 542                         $this->output( wfTimestamp( TS_DB ) );
 543                         $this->output( "......<b>Deleted</b> " . $this->db->affectedRows() . " records.\n" );
 544                 }
 545
 546                 $this->output( wfTimestamp( TS_DB ) );
 547                 $this->output( "......Creating tables.\n" );
 548                 $this->db->query( "CREATE TABLE $page (
 549                         page_id int(8) unsigned NOT NULL auto_increment,
 550                         page_namespace int NOT NULL,
 551                         page_title varchar(255) binary NOT NULL,
 552                         page_restrictions tinyblob NOT NULL,
 553                         page_is_redirect tinyint(1) unsigned NOT NULL default '0',
 554                         page_is_new tinyint(1) unsigned NOT NULL default '0',
 555                         page_random real unsigned NOT NULL,
 556                         page_touched char(14) binary NOT NULL default '',
 557                         page_latest int(8) unsigned NOT NULL,
 558                         page_len int(8) unsigned NOT NULL,
 559
 560                         PRIMARY KEY page_id (page_id),
 561                         UNIQUE INDEX name_title (page_namespace,page_title),
 562                         INDEX (page_random),
 563                         INDEX (page_len)
 564                         ) ENGINE=InnoDB", __METHOD__ );
 565                 $this->db->query( "CREATE TABLE $revision (
 566                         rev_id int(8) unsigned NOT NULL auto_increment,
 567                         rev_page int(8) unsigned NOT NULL,
 568                         rev_comment tinyblob NOT NULL,
 569                         rev_user int(5) unsigned NOT NULL default '0',
 570                         rev_user_text varchar(255) binary NOT NULL default '',
 571                         rev_timestamp char(14) binary NOT NULL default '',
 572                         rev_minor_edit tinyint(1) unsigned NOT NULL default '0',
 573                         rev_deleted tinyint(1) unsigned NOT NULL default '0',
 574                         rev_len int(8) unsigned,
 575                         rev_parent_id int(8) unsigned default NULL,
 576                         PRIMARY KEY rev_page_id (rev_page, rev_id),
 577                         UNIQUE INDEX rev_id (rev_id),
 578                         INDEX rev_timestamp (rev_timestamp),
 579                         INDEX page_timestamp (rev_page,rev_timestamp),
 580                         INDEX user_timestamp (rev_user,rev_timestamp),
 581                         INDEX usertext_timestamp (rev_user_text,rev_timestamp)
 582                         ) ENGINE=InnoDB", __METHOD__ );
 583
 584                 $this->output( wfTimestamp( TS_DB ) );
 585                 $this->output( "......Locking tables.\n" );
 586                 $this->db->query(
 587                         "LOCK TABLES $page WRITE, $revision WRITE, $old WRITE, $cur WRITE",
 588                         __METHOD__
 589                 );
 590
 591                 $maxold = intval( $this->db->selectField( 'old', 'max(old_id)', '', __METHOD__ ) );
 592                 $this->output( wfTimestamp( TS_DB ) );
 593                 $this->output( "......maxold is {$maxold}\n" );
 594
 595                 $this->output( wfTimestamp( TS_DB ) );
 596                 global $wgLegacySchemaConversion;
 597                 if ( $wgLegacySchemaConversion ) {
 598                         // Create HistoryBlobCurStub entries.
 599                         // Text will be pulled from the leftover 'cur' table at runtime.
 600                         $this->output( "......Moving metadata from cur; using blob references to text in cur table.\n" );
 601                         $cur_text = "concat('O:18:\"historyblobcurstub\":1:{s:6:\"mCurId\";i:',cur_id,';}')";
 602                         $cur_flags = "'object'";
 603                 } else {
 604                         // Copy all cur text in immediately: this may take longer but avoids
 605                         // having to keep an extra table around.
 606                         $this->output( "......Moving text from cur.\n" );
 607                         $cur_text = 'cur_text';
 608                         $cur_flags = "''";
 609                 }
 610                 $this->db->query(
 611                         "INSERT INTO $old (old_namespace, old_title, old_text, old_comment, old_user,
 612                                 old_user_text, old_timestamp, old_minor_edit, old_flags)
 613                         SELECT cur_namespace, cur_title, $cur_text, cur_comment, cur_user, cur_user_text,
 614                                 cur_timestamp, cur_minor_edit, $cur_flags
 615                         FROM $cur",
 616                         __METHOD__
 617                 );
 618
 619                 $this->output( wfTimestamp( TS_DB ) );
 620                 $this->output( "......Setting up revision table.\n" );
 621                 $this->db->query(
 622                         "INSERT INTO $revision (rev_id, rev_page, rev_comment, rev_user,
 623                                 rev_user_text, rev_timestamp, rev_minor_edit)
 624                         SELECT old_id, cur_id, old_comment, old_user, old_user_text,
 625                                 old_timestamp, old_minor_edit
 626                         FROM $old,$cur WHERE old_namespace=cur_namespace AND old_title=cur_title",
 627                         __METHOD__
 628                 );
 629
 630                 $this->output( wfTimestamp( TS_DB ) );
 631                 $this->output( "......Setting up page table.\n" );
 632                 $this->db->query(
 633                         "INSERT INTO $page (page_id, page_namespace, page_title,
 634                                 page_restrictions, page_is_redirect, page_is_new, page_random,
 635                                 page_touched, page_latest, page_len)
 636                         SELECT cur_id, cur_namespace, cur_title, cur_restrictions,
 637                                 cur_is_redirect, cur_is_new, cur_random, cur_touched, rev_id, LENGTH(cur_text)
 638                         FROM $cur,$revision
 639                         WHERE cur_id=rev_page AND rev_timestamp=cur_timestamp AND rev_id > {$maxold}",
 640                         __METHOD__
 641                 );
 642
 643                 $this->output( wfTimestamp( TS_DB ) );
 644                 $this->output( "......Unlocking tables.\n" );
 645                 $this->db->query( "UNLOCK TABLES", __METHOD__ );
 646
 647                 $this->output( wfTimestamp( TS_DB ) );
 648                 $this->output( "......Renaming old.\n" );
 649                 $this->db->query( "ALTER TABLE $old RENAME TO $text", __METHOD__ );
 650
 651                 $this->output( wfTimestamp( TS_DB ) );
 652                 $this->output( "...done.\n" );
 653         }
 654
 655         protected function doNamespaceSize() {
 656                 $tables = [
 657                         'page' => 'page',
 658                         'archive' => 'ar',
 659                         'recentchanges' => 'rc',
 660                         'watchlist' => 'wl',
 661                         'querycache' => 'qc',
 662                         'logging' => 'log',
 663                 ];
 664                 foreach ( $tables as $table => $prefix ) {
 665                         $field = $prefix . '_namespace';
 666
 667                         $tablename = $this->db->tableName( $table );
 668                         $result = $this->db->query( "SHOW COLUMNS FROM $tablename LIKE '$field'", __METHOD__ );
 669                         $info = $this->db->fetchObject( $result );
 670
 671                         if ( substr( $info->Type, 0, 3 ) == 'int' ) {
 672                                 $this->output( "...$field is already a full int ($info->Type).\n" );
 673                         } else {
 674                                 $this->output( "Promoting $field from $info->Type to int... " );
 675                                 $this->db->query( "ALTER TABLE $tablename MODIFY $field int NOT NULL", __METHOD__ );
 676                                 $this->output( "done.\n" );
 677                         }
 678                 }
 679         }
 680
 681         protected function doPagelinksUpdate() {
 682                 if ( $this->db->tableExists( 'pagelinks', __METHOD__ ) ) {
 683                         $this->output( "...already have pagelinks table.\n" );
 684
 685                         return;
 686                 }
 687
 688                 $this->applyPatch(
 689                         'patch-pagelinks.sql',
 690                         false,
 691                         'Converting links and brokenlinks tables to pagelinks'
 692                 );
 693
 694                 global $wgContLang;
 695                 foreach ( $wgContLang->getNamespaces() as $ns => $name ) {
 696                         if ( $ns == 0 ) {
 697                                 continue;
 698                         }
 699
 700                         $this->output( "Cleaning up broken links for namespace $ns... " );
 701                         $this->db->update( 'pagelinks',
 702                                 [
 703                                         'pl_namespace' => $ns,
 704                                         "pl_title = TRIM(LEADING {$this->db->addQuotes( "$name:" )} FROM pl_title)",
 705                                 ],
 706                                 [
 707                                         'pl_namespace' => 0,
 708                                         'pl_title' . $this->db->buildLike( "$name:", $this->db->anyString() ),
 709                                 ],
 710                                 __METHOD__
 711                         );
 712                         $this->output( "done.\n" );
 713                 }
 714         }
 715
 716         protected function doUserUniqueUpdate() {
 717                 if ( !$this->doTable( 'user' ) ) {
 718                         return true;
 719                 }
 720
 721                 $duper = new UserDupes( $this->db, [ $this, 'output' ] );
 722                 if ( $duper->hasUniqueIndex() ) {
 723                         $this->output( "...already have unique user_name index.\n" );
 724
 725                         return;
 726                 }
 727
 728                 if ( !$duper->clearDupes() ) {
 729                         $this->output( "WARNING: This next step will probably fail due to unfixed duplicates...\n" );
 730                 }
 731                 $this->applyPatch( 'patch-user_nameindex.sql', false, "Adding unique index on user_name" );
 732         }
 733
 734         protected function doUserGroupsUpdate() {
 735                 if ( !$this->doTable( 'user_groups' ) ) {
 736                         return true;
 737                 }
 738
 739                 if ( $this->db->tableExists( 'user_groups', __METHOD__ ) ) {
 740                         $info = $this->db->fieldInfo( 'user_groups', 'ug_group' );
 741                         if ( $info->type() == 'int' ) {
 742                                 $oldug = $this->db->tableName( 'user_groups' );
 743                                 $newug = $this->db->tableName( 'user_groups_bogus' );
 744                                 $this->output( "user_groups table exists but is in bogus intermediate " .
 745                                         "format. Renaming to $newug... " );
 746                                 $this->db->query( "ALTER TABLE $oldug RENAME TO $newug", __METHOD__ );
 747                                 $this->output( "done.\n" );
 748
 749                                 $this->applyPatch( 'patch-user_groups.sql', false, "Re-adding fresh user_groups table" );
 750
 751                                 $this->output( "***\n" );
 752                                 $this->output( "*** WARNING: You will need to manually fix up user " .
 753                                         "permissions in the user_groups\n" );
 754                                 $this->output( "*** table. Old 1.5 alpha versions did some pretty funky stuff...\n" );
 755                                 $this->output( "***\n" );
 756                         } else {
 757                                 $this->output( "...user_groups table exists and is in current format.\n" );
 758                         }
 759
 760                         return;
 761                 }
 762
 763                 $this->applyPatch( 'patch-user_groups.sql', false, "Adding user_groups table" );
 764
 765                 if ( !$this->db->tableExists( 'user_rights', __METHOD__ ) ) {
 766                         if ( $this->db->fieldExists( 'user', 'user_rights', __METHOD__ ) ) {
 767                                 $this->applyPatch(
 768                                         'patch-user_rights.sql',
 769                                         false,
 770                                         'Upgrading from a 1.3 or older database? Breaking out user_rights for conversion'
 771                                 );
 772                         } else {
 773                                 $this->output( "*** WARNING: couldn't locate user_rights table or field for upgrade.\n" );
 774                                 $this->output( "*** You may need to manually configure some sysops by manipulating\n" );
 775                                 $this->output( "*** the user_groups table.\n" );
 776
 777                                 return;
 778                         }
 779                 }
 780
 781                 $this->output( "Converting user_rights table to user_groups... " );
 782                 $result = $this->db->select( 'user_rights',
 783                         [ 'ur_user', 'ur_rights' ],
 784                         [ "ur_rights != ''" ],
 785                         __METHOD__ );
 786
 787                 foreach ( $result as $row ) {
 788                         $groups = array_unique(
 789                                 array_map( 'trim',
 790                                         explode( ',', $row->ur_rights ) ) );
 791
 792                         foreach ( $groups as $group ) {
 793                                 $this->db->insert( 'user_groups',
 794                                         [
 795                                                 'ug_user' => $row->ur_user,
 796                                                 'ug_group' => $group ],
 797                                         __METHOD__ );
 798                         }
 799                 }
 800                 $this->output( "done.\n" );
 801         }
 802
 803         /**
 804          * Make sure wl_notificationtimestamp can be NULL,
 805          * and update old broken items.
 806          */
 807         protected function doWatchlistNull() {
 808                 $info = $this->db->fieldInfo( 'watchlist', 'wl_notificationtimestamp' );
 809                 if ( !$info ) {
 810                         return;
 811                 }
 812                 if ( $info->isNullable() ) {
 813                         $this->output( "...wl_notificationtimestamp is already nullable.\n" );
 814
 815                         return;
 816                 }
 817
 818                 $this->applyPatch(
 819                         'patch-watchlist-null.sql',
 820                         false,
 821                         'Making wl_notificationtimestamp nullable'
 822                 );
 823         }
 824
 825         /**
 826          * Set page_random field to a random value where it is equals to 0.
 827          *
 828          * @see T5946
 829          */
 830         protected function doPageRandomUpdate() {
 831                 $page = $this->db->tableName( 'page' );
 832                 $this->db->query( "UPDATE $page SET page_random = RAND() WHERE page_random = 0", __METHOD__ );
 833                 $rows = $this->db->affectedRows();
 834
 835                 if ( $rows ) {
 836                         $this->output( "Set page_random to a random value on $rows rows where it was set to 0\n" );
 837                 } else {
 838                         $this->output( "...no page_random rows needed to be set\n" );
 839                 }
 840         }
 841
 842         protected function doTemplatelinksUpdate() {
 843                 if ( $this->db->tableExists( 'templatelinks', __METHOD__ ) ) {
 844                         $this->output( "...templatelinks table already exists\n" );
 845
 846                         return;
 847                 }
 848
 849                 $this->applyPatch( 'patch-templatelinks.sql', false, "Creating templatelinks table" );
 850
 851                 $this->output( "Populating...\n" );
 852                 if ( wfGetLB()->getServerCount() > 1 ) {
 853                         // Slow, replication-friendly update
 854                         $res = $this->db->select( 'pagelinks', [ 'pl_from', 'pl_namespace', 'pl_title' ],
 855                                 [ 'pl_namespace' => NS_TEMPLATE ], __METHOD__ );
 856                         $count = 0;
 857                         foreach ( $res as $row ) {
 858                                 $count = ( $count + 1 ) % 100;
 859                                 if ( $count == 0 ) {
 860                                         $lbFactory = MediaWikiServices::getInstance()->getDBLoadBalancerFactory();
 861                                         $lbFactory->waitForReplication( [ 'wiki' => wfWikiID() ] );
 862                                 }
 863                                 $this->db->insert( 'templatelinks',
 864                                         [
 865                                                 'tl_from' => $row->pl_from,
 866                                                 'tl_namespace' => $row->pl_namespace,
 867                                                 'tl_title' => $row->pl_title,
 868                                         ], __METHOD__
 869                                 );
 870                         }
 871                 } else {
 872                         // Fast update
 873                         $this->db->insertSelect( 'templatelinks', 'pagelinks',
 874                                 [
 875                                         'tl_from' => 'pl_from',
 876                                         'tl_namespace' => 'pl_namespace',
 877                                         'tl_title' => 'pl_title'
 878                                 ], [
 879                                         'pl_namespace' => 10
 880                                 ], __METHOD__
 881                         );
 882                 }
 883                 $this->output( "Done. Please run maintenance/refreshLinks.php for a more " .
 884                         "thorough templatelinks update.\n" );
 885         }
 886
 887         protected function doBacklinkingIndicesUpdate() {
 888                 if ( !$this->indexHasField( 'pagelinks', 'pl_namespace', 'pl_from' ) ||
 889                         !$this->indexHasField( 'templatelinks', 'tl_namespace', 'tl_from' ) ||
 890                         !$this->indexHasField( 'imagelinks', 'il_to', 'il_from' )
 891                 ) {
 892                         $this->applyPatch( 'patch-backlinkindexes.sql', false, "Updating backlinking indices" );
 893                 }
 894         }
 895
 896         /**
 897          * Adding page_restrictions table, obsoleting page.page_restrictions.
 898          * Migrating old restrictions to new table
 899          * -- Andrew Garrett, January 2007.
 900          */
 901         protected function doRestrictionsUpdate() {
 902                 if ( $this->db->tableExists( 'page_restrictions', __METHOD__ ) ) {
 903                         $this->output( "...page_restrictions table already exists.\n" );
 904
 905                         return;
 906                 }
 907
 908                 $this->applyPatch(
 909                         'patch-page_restrictions.sql',
 910                         false,
 911                         'Creating page_restrictions table (1/2)'
 912                 );
 913                 $this->applyPatch(
 914                         'patch-page_restrictions_sortkey.sql',
 915                         false,
 916                         'Creating page_restrictions table (2/2)'
 917                 );
 918                 $this->output( "done.\n" );
 919
 920                 $this->output( "Migrating old restrictions to new table...\n" );
 921                 $task = $this->maintenance->runChild( 'UpdateRestrictions' );
 922                 $task->execute();
 923         }
 924
 925         protected function doCategorylinksIndicesUpdate() {
 926                 if ( !$this->indexHasField( 'categorylinks', 'cl_sortkey', 'cl_from' ) ) {
 927                         $this->applyPatch( 'patch-categorylinksindex.sql', false, "Updating categorylinks Indices" );
 928                 }
 929         }
 930
 931         protected function doCategoryPopulation() {
 932                 if ( $this->updateRowExists( 'populate category' ) ) {
 933                         $this->output( "...category table already populated.\n" );
 934
 935                         return;
 936                 }
 937
 938                 $this->output(
 939                         "Populating category table, printing progress markers. " .
 940                         "For large databases, you\n" .
 941                         "may want to hit Ctrl-C and do this manually with maintenance/\n" .
 942                         "populateCategory.php.\n"
 943                 );
 944                 $task = $this->maintenance->runChild( 'PopulateCategory' );
 945                 $task->execute();
 946                 $this->output( "Done populating category table.\n" );
 947         }
 948
 949         protected function doPopulateParentId() {
 950                 if ( !$this->updateRowExists( 'populate rev_parent_id' ) ) {
 951                         $this->output(
 952                                 "Populating rev_parent_id fields, printing progress markers. For large\n" .
 953                                 "databases, you may want to hit Ctrl-C and do this manually with\n" .
 954                                 "maintenance/populateParentId.php.\n" );
 955
 956                         $task = $this->maintenance->runChild( 'PopulateParentId' );
 957                         $task->execute();
 958                 }
 959         }
 960
 961         protected function doMaybeProfilingMemoryUpdate() {
 962                 if ( !$this->doTable( 'profiling' ) ) {
 963                         return true;
 964                 }
 965
 966                 if ( !$this->db->tableExists( 'profiling', __METHOD__ ) ) {
 967                         return true;
 968                 } elseif ( $this->db->fieldExists( 'profiling', 'pf_memory', __METHOD__ ) ) {
 969                         $this->output( "...profiling table has pf_memory field.\n" );
 970
 971                         return true;
 972                 }
 973
 974                 return $this->applyPatch(
 975                         'patch-profiling-memory.sql',
 976                         false,
 977                         'Adding pf_memory field to table profiling'
 978                 );
 979         }
 980
 981         protected function doFilearchiveIndicesUpdate() {
 982                 $info = $this->db->indexInfo( 'filearchive', 'fa_user_timestamp', __METHOD__ );
 983                 if ( !$info ) {
 984                         $this->applyPatch( 'patch-filearchive-user-index.sql', false, "Updating filearchive indices" );
 985                 }
 986
 987                 return true;
 988         }
 989
 990         protected function doNonUniquePlTlIl() {
 991                 $info = $this->db->indexInfo( 'pagelinks', 'pl_namespace' );
 992                 if ( is_array( $info ) && $info[0]->Non_unique ) {
 993                         $this->output( "...pl_namespace, tl_namespace, il_to indices are already non-UNIQUE.\n" );
 994
 995                         return true;
 996                 }
 997                 if ( $this->skipSchema ) {
 998                         $this->output( "...skipping schema change (making pl_namespace, tl_namespace " .
 999                                 "and il_to indices non-UNIQUE).\n" );
1000
1001                         return false;
1002                 }
1003
1004                 return $this->applyPatch(
1005                         'patch-pl-tl-il-nonunique.sql',
1006                         false,
1007                         'Making pl_namespace, tl_namespace and il_to indices non-UNIQUE'
1008                 );
1009         }
1010
1011         protected function doUpdateMimeMinorField() {
1012                 if ( $this->updateRowExists( 'mime_minor_length' ) ) {
1013                         $this->output( "...*_mime_minor fields are already long enough.\n" );
1014
1015                         return;
1016                 }
1017
1018                 $this->applyPatch(
1019                         'patch-mime_minor_length.sql',
1020                         false,
1021                         'Altering all *_mime_minor fields to 100 bytes in size'
1022                 );
1023         }
1024
1025         protected function doClFieldsUpdate() {
1026                 if ( $this->updateRowExists( 'cl_fields_update' ) ) {
1027                         $this->output( "...categorylinks up-to-date.\n" );
1028
1029                         return;
1030                 }
1031
1032                 $this->applyPatch(
1033                         'patch-categorylinks-better-collation2.sql',
1034                         false,
1035                         'Updating categorylinks (again)'
1036                 );
1037         }
1038
1039         protected function doLangLinksLengthUpdate() {
1040                 $langlinks = $this->db->tableName( 'langlinks' );
1041                 $res = $this->db->query( "SHOW COLUMNS FROM $langlinks LIKE 'll_lang'" );
1042                 $row = $this->db->fetchObject( $res );
1043
1044                 if ( $row && $row->Type == "varbinary(10)" ) {
1045                         $this->applyPatch(
1046                                 'patch-langlinks-ll_lang-20.sql',
1047                                 false,
1048                                 'Updating length of ll_lang in langlinks'
1049                         );
1050                 } else {
1051                         $this->output( "...ll_lang is up-to-date.\n" );
1052                 }
1053         }
1054
1055         protected function doUserNewTalkTimestampNotNull() {
1056                 if ( !$this->doTable( 'user_newtalk' ) ) {
1057                         return true;
1058                 }
1059
1060                 $info = $this->db->fieldInfo( 'user_newtalk', 'user_last_timestamp' );
1061                 if ( $info === false ) {
1062                         return;
1063                 }
1064                 if ( $info->isNullable() ) {
1065                         $this->output( "...user_last_timestamp is already nullable.\n" );
1066
1067                         return;
1068                 }
1069
1070                 $this->applyPatch(
1071                         'patch-user-newtalk-timestamp-null.sql',
1072                         false,
1073                         'Making user_last_timestamp nullable'
1074                 );
1075         }
1076
1077         protected function doIwlinksIndexNonUnique() {
1078                 $info = $this->db->indexInfo( 'iwlinks', 'iwl_prefix_title_from' );
1079                 if ( is_array( $info ) && $info[0]->Non_unique ) {
1080                         $this->output( "...iwl_prefix_title_from index is already non-UNIQUE.\n" );
1081
1082                         return true;
1083                 }
1084                 if ( $this->skipSchema ) {
1085                         $this->output( "...skipping schema change (making iwl_prefix_title_from index non-UNIQUE).\n" );
1086
1087                         return false;
1088                 }
1089
1090                 return $this->applyPatch(
1091                         'patch-iwl_prefix_title_from-non-unique.sql',
1092                         false,
1093                         'Making iwl_prefix_title_from index non-UNIQUE'
1094                 );
1095         }
1096
1097         protected function doUserNewTalkUseridUnsigned() {
1098                 if ( !$this->doTable( 'user_newtalk' ) ) {
1099                         return true;
1100                 }
1101
1102                 $info = $this->db->fieldInfo( 'user_newtalk', 'user_id' );
1103                 if ( $info === false ) {
1104                         return true;
1105                 }
1106                 if ( $info->isUnsigned() ) {
1107                         $this->output( "...user_id is already unsigned int.\n" );
1108
1109                         return true;
1110                 }
1111
1112                 return $this->applyPatch(
1113                         'patch-user-newtalk-userid-unsigned.sql',
1114                         false,
1115                         'Making user_id unsigned int'
1116                 );
1117         }
1118
1119         protected function doRevisionPageRevIndexNonUnique() {
1120                 if ( !$this->doTable( 'revision' ) ) {
1121                         return true;
1122                 } elseif ( !$this->db->indexExists( 'revision', 'rev_page_id' ) ) {
1123                         $this->output( "...rev_page_id index not found on revision.\n" );
1124                         return true;
1125                 }
1126
1127                 if ( !$this->db->indexUnique( 'revision', 'rev_page_id' ) ) {
1128                         $this->output( "...rev_page_id index already non-unique.\n" );
1129                         return true;
1130                 }
1131
1132                 return $this->applyPatch(
1133                         'patch-revision-page-rev-index-nonunique.sql',
1134                         false,
1135                         'Making rev_page_id index non-unique'
1136                 );
1137         }
1138
1139         public function getSchemaVars() {
1140                 global $wgDBTableOptions;
1141
1142                 $vars = [];
1143                 $vars['wgDBTableOptions'] = str_replace( 'TYPE', 'ENGINE', $wgDBTableOptions );
1144                 $vars['wgDBTableOptions'] = str_replace(
1145                         'CHARSET=mysql4',
1146                         'CHARSET=binary',
1147                         $vars['wgDBTableOptions']
1148                 );
1149
1150                 return $vars;
1151         }
1152 }