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
  24 /**
  25  * Mysql update list and mysql-specific update functions.
  26  *
  27  * @ingroup Deployment
  28  * @since 1.17
  29  */
  30 class MysqlUpdater extends DatabaseUpdater {
  31         protected function getCoreUpdateList() {
  32                 return [
  33                         [ 'disableContentHandlerUseDB' ],
  34
  35                         // 1.2
  36                         [ 'addField', 'ipblocks', 'ipb_id', 'patch-ipblocks.sql' ],
  37                         [ 'addField', 'ipblocks', 'ipb_expiry', 'patch-ipb_expiry.sql' ],
  38                         [ 'doInterwikiUpdate' ],
  39                         [ 'doIndexUpdate' ],
  40                         [ 'addField', 'recentchanges', 'rc_type', 'patch-rc_type.sql' ],
  41                         [ 'addIndex', 'recentchanges', 'new_name_timestamp', 'patch-rc-newindex.sql' ],
  42
  43                         // 1.3
  44                         [ 'addField', 'user', 'user_real_name', 'patch-user-realname.sql' ],
  45                         [ 'addTable', 'querycache', 'patch-querycache.sql' ],
  46                         [ 'addTable', 'objectcache', 'patch-objectcache.sql' ],
  47                         [ 'addTable', 'categorylinks', 'patch-categorylinks.sql' ],
  48                         [ 'doOldLinksUpdate' ],
  49                         [ 'doFixAncientImagelinks' ],
  50                         [ 'addField', 'recentchanges', 'rc_ip', 'patch-rc_ip.sql' ],
  51
  52                         // 1.4
  53                         [ 'addIndex', 'image', 'PRIMARY', 'patch-image_name_primary.sql' ],
  54                         [ 'addField', 'recentchanges', 'rc_id', 'patch-rc_id.sql' ],
  55                         [ 'addField', 'recentchanges', 'rc_patrolled', 'patch-rc-patrol.sql' ],
  56                         [ 'addTable', 'logging', 'patch-logging.sql' ],
  57                         [ 'addField', 'user', 'user_token', 'patch-user_token.sql' ],
  58                         [ 'addField', 'watchlist', 'wl_notificationtimestamp', 'patch-email-notification.sql' ],
  59                         [ 'doWatchlistUpdate' ],
  60                         [ 'dropField', 'user', 'user_emailauthenticationtimestamp',
  61                                 'patch-email-authentication.sql' ],
  62
  63                         // 1.5
  64                         [ 'doSchemaRestructuring' ],
  65                         [ 'addField', 'logging', 'log_params', 'patch-log_params.sql' ],
  66                         [ 'checkBin', 'logging', 'log_title', 'patch-logging-title.sql', ],
  67                         [ 'addField', 'archive', 'ar_rev_id', 'patch-archive-rev_id.sql' ],
  68                         [ 'addField', 'page', 'page_len', 'patch-page_len.sql' ],
  69                         [ 'dropField', 'revision', 'inverse_timestamp', 'patch-inverse_timestamp.sql' ],
  70                         [ 'addField', 'revision', 'rev_text_id', 'patch-rev_text_id.sql' ],
  71                         [ 'addField', 'revision', 'rev_deleted', 'patch-rev_deleted.sql' ],
  72                         [ 'addField', 'image', 'img_width', 'patch-img_width.sql' ],
  73                         [ 'addField', 'image', 'img_metadata', 'patch-img_metadata.sql' ],
  74                         [ 'addField', 'user', 'user_email_token', 'patch-user_email_token.sql' ],
  75                         [ 'addField', 'archive', 'ar_text_id', 'patch-archive-text_id.sql' ],
  76                         [ 'doNamespaceSize' ],
  77                         [ 'addField', 'image', 'img_media_type', 'patch-img_media_type.sql' ],
  78                         [ 'doPagelinksUpdate' ],
  79                         [ 'dropField', 'image', 'img_type', 'patch-drop_img_type.sql' ],
  80                         [ 'doUserUniqueUpdate' ],
  81                         [ 'doUserGroupsUpdate' ],
  82                         [ 'addField', 'site_stats', 'ss_total_pages', 'patch-ss_total_articles.sql' ],
  83                         [ 'addTable', 'user_newtalk', 'patch-usernewtalk2.sql' ],
  84                         [ 'addTable', 'transcache', 'patch-transcache.sql' ],
  85                         [ 'addField', 'interwiki', 'iw_trans', 'patch-interwiki-trans.sql' ],
  86
  87                         // 1.6
  88                         [ 'doWatchlistNull' ],
  89                         [ 'addIndex', 'logging', 'times', 'patch-logging-times-index.sql' ],
  90                         [ 'addField', 'ipblocks', 'ipb_range_start', 'patch-ipb_range_start.sql' ],
  91                         [ 'doPageRandomUpdate' ],
  92                         [ 'addField', 'user', 'user_registration', 'patch-user_registration.sql' ],
  93                         [ 'doTemplatelinksUpdate' ],
  94                         [ 'addTable', 'externallinks', 'patch-externallinks.sql' ],
  95                         [ 'addTable', 'job', 'patch-job.sql' ],
  96                         [ 'addField', 'site_stats', 'ss_images', 'patch-ss_images.sql' ],
  97                         [ 'addTable', 'langlinks', 'patch-langlinks.sql' ],
  98                         [ 'addTable', 'querycache_info', 'patch-querycacheinfo.sql' ],
  99                         [ 'addTable', 'filearchive', 'patch-filearchive.sql' ],
 100                         [ 'addField', 'ipblocks', 'ipb_anon_only', 'patch-ipb_anon_only.sql' ],
 101                         [ 'addIndex', 'recentchanges', 'rc_ns_usertext', 'patch-recentchanges-utindex.sql' ],
 102                         [ 'addIndex', 'recentchanges', 'rc_user_text', 'patch-rc_user_text-index.sql' ],
 103
 104                         // 1.9
 105                         [ 'addField', 'user', 'user_newpass_time', 'patch-user_newpass_time.sql' ],
 106                         [ 'addTable', 'redirect', 'patch-redirect.sql' ],
 107                         [ 'addTable', 'querycachetwo', 'patch-querycachetwo.sql' ],
 108                         [ 'addField', 'ipblocks', 'ipb_enable_autoblock', 'patch-ipb_optional_autoblock.sql' ],
 109                         [ 'doBacklinkingIndicesUpdate' ],
 110                         [ 'addField', 'recentchanges', 'rc_old_len', 'patch-rc_len.sql' ],
 111                         [ 'addField', 'user', 'user_editcount', 'patch-user_editcount.sql' ],
 112
 113                         // 1.10
 114                         [ 'doRestrictionsUpdate' ],
 115                         [ 'addField', 'logging', 'log_id', 'patch-log_id.sql' ],
 116                         [ 'addField', 'revision', 'rev_parent_id', 'patch-rev_parent_id.sql' ],
 117                         [ 'addField', 'page_restrictions', 'pr_id', 'patch-page_restrictions_sortkey.sql' ],
 118                         [ 'addField', 'revision', 'rev_len', 'patch-rev_len.sql' ],
 119                         [ 'addField', 'recentchanges', 'rc_deleted', 'patch-rc_deleted.sql' ],
 120                         [ 'addField', 'logging', 'log_deleted', 'patch-log_deleted.sql' ],
 121                         [ 'addField', 'archive', 'ar_deleted', 'patch-ar_deleted.sql' ],
 122                         [ 'addField', 'ipblocks', 'ipb_deleted', 'patch-ipb_deleted.sql' ],
 123                         [ 'addField', 'filearchive', 'fa_deleted', 'patch-fa_deleted.sql' ],
 124                         [ 'addField', 'archive', 'ar_len', 'patch-ar_len.sql' ],
 125
 126                         // 1.11
 127                         [ 'addField', 'ipblocks', 'ipb_block_email', 'patch-ipb_emailban.sql' ],
 128                         [ 'doCategorylinksIndicesUpdate' ],
 129                         [ 'addField', 'oldimage', 'oi_metadata', 'patch-oi_metadata.sql' ],
 130                         [ 'addIndex', 'archive', 'usertext_timestamp', 'patch-archive-user-index.sql' ],
 131                         [ 'addIndex', 'image', 'img_usertext_timestamp', 'patch-image-user-index.sql' ],
 132                         [ 'addIndex', 'oldimage', 'oi_usertext_timestamp', 'patch-oldimage-user-index.sql' ],
 133                         [ 'addField', 'archive', 'ar_page_id', 'patch-archive-page_id.sql' ],
 134                         [ 'addField', 'image', 'img_sha1', 'patch-img_sha1.sql' ],
 135
 136                         // 1.12
 137                         [ 'addTable', 'protected_titles', 'patch-protected_titles.sql' ],
 138
 139                         // 1.13
 140                         [ 'addField', 'ipblocks', 'ipb_by_text', 'patch-ipb_by_text.sql' ],
 141                         [ 'addTable', 'page_props', 'patch-page_props.sql' ],
 142                         [ 'addTable', 'updatelog', 'patch-updatelog.sql' ],
 143                         [ 'addTable', 'category', 'patch-category.sql' ],
 144                         [ 'doCategoryPopulation' ],
 145                         [ 'addField', 'archive', 'ar_parent_id', 'patch-ar_parent_id.sql' ],
 146                         [ 'addField', 'user_newtalk', 'user_last_timestamp', 'patch-user_last_timestamp.sql' ],
 147                         [ 'doPopulateParentId' ],
 148                         [ 'checkBin', 'protected_titles', 'pt_title', 'patch-pt_title-encoding.sql', ],
 149                         [ 'doMaybeProfilingMemoryUpdate' ],
 150                         [ 'doFilearchiveIndicesUpdate' ],
 151
 152                         // 1.14
 153                         [ 'addField', 'site_stats', 'ss_active_users', 'patch-ss_active_users.sql' ],
 154                         [ 'doActiveUsersInit' ],
 155                         [ 'addField', 'ipblocks', 'ipb_allow_usertalk', 'patch-ipb_allow_usertalk.sql' ],
 156
 157                         // 1.15
 158                         [ 'addTable', 'change_tag', 'patch-change_tag.sql' ],
 159                         [ 'addTable', 'tag_summary', 'patch-tag_summary.sql' ],
 160                         [ 'addTable', 'valid_tag', 'patch-valid_tag.sql' ],
 161
 162                         // 1.16
 163                         [ 'addTable', 'user_properties', 'patch-user_properties.sql' ],
 164                         [ 'addTable', 'log_search', 'patch-log_search.sql' ],
 165                         [ 'addField', 'logging', 'log_user_text', 'patch-log_user_text.sql' ],
 166                         # listed separately from the previous update because 1.16 was released without this update
 167                         [ 'doLogUsertextPopulation' ],
 168                         [ 'doLogSearchPopulation' ],
 169                         [ 'addTable', 'l10n_cache', 'patch-l10n_cache.sql' ],
 170                         [ 'addIndex', 'log_search', 'ls_field_val', 'patch-log_search-rename-index.sql' ],
 171                         [ 'addIndex', 'change_tag', 'change_tag_rc_tag', 'patch-change_tag-indexes.sql' ],
 172                         [ 'addField', 'redirect', 'rd_interwiki', 'patch-rd_interwiki.sql' ],
 173                         [ 'doUpdateTranscacheField' ],
 174                         [ 'doUpdateMimeMinorField' ],
 175
 176                         // 1.17
 177                         [ 'addTable', 'iwlinks', 'patch-iwlinks.sql' ],
 178                         [ 'addIndex', 'iwlinks', 'iwl_prefix_title_from', 'patch-rename-iwl_prefix.sql' ],
 179                         [ 'addField', 'updatelog', 'ul_value', 'patch-ul_value.sql' ],
 180                         [ 'addField', 'interwiki', 'iw_api', 'patch-iw_api_and_wikiid.sql' ],
 181                         [ 'dropIndex', 'iwlinks', 'iwl_prefix', 'patch-kill-iwl_prefix.sql' ],
 182                         [ 'addField', 'categorylinks', 'cl_collation', 'patch-categorylinks-better-collation.sql' ],
 183                         [ 'doClFieldsUpdate' ],
 184                         [ 'addTable', 'module_deps', 'patch-module_deps.sql' ],
 185                         [ 'dropIndex', 'archive', 'ar_page_revid', 'patch-archive_kill_ar_page_revid.sql' ],
 186                         [ 'addIndex', 'archive', 'ar_revid', 'patch-archive_ar_revid.sql' ],
 187                         [ 'doLangLinksLengthUpdate' ],
 188
 189                         // 1.18
 190                         [ 'doUserNewTalkTimestampNotNull' ],
 191                         [ 'addIndex', 'user', 'user_email', 'patch-user_email_index.sql' ],
 192                         [ 'modifyField', 'user_properties', 'up_property', 'patch-up_property.sql' ],
 193                         [ 'addTable', 'uploadstash', 'patch-uploadstash.sql' ],
 194                         [ 'addTable', 'user_former_groups', 'patch-user_former_groups.sql' ],
 195
 196                         // 1.19
 197                         [ 'addIndex', 'logging', 'type_action', 'patch-logging-type-action-index.sql' ],
 198                         [ 'addField', 'revision', 'rev_sha1', 'patch-rev_sha1.sql' ],
 199                         [ 'doMigrateUserOptions' ],
 200                         [ 'dropField', 'user', 'user_options', 'patch-drop-user_options.sql' ],
 201                         [ 'addField', 'archive', 'ar_sha1', 'patch-ar_sha1.sql' ],
 202                         [ 'addIndex', 'page', 'page_redirect_namespace_len',
 203                                 'patch-page_redirect_namespace_len.sql' ],
 204                         [ 'addField', 'uploadstash', 'us_chunk_inx', 'patch-uploadstash_chunk.sql' ],
 205                         [ 'addfield', 'job', 'job_timestamp', 'patch-jobs-add-timestamp.sql' ],
 206
 207                         // 1.20
 208                         [ 'addIndex', 'revision', 'page_user_timestamp', 'patch-revision-user-page-index.sql' ],
 209                         [ 'addField', 'ipblocks', 'ipb_parent_block_id', 'patch-ipb-parent-block-id.sql' ],
 210                         [ 'addIndex', 'ipblocks', 'ipb_parent_block_id', 'patch-ipb-parent-block-id-index.sql' ],
 211                         [ 'dropField', 'category', 'cat_hidden', 'patch-cat_hidden.sql' ],
 212
 213                         // 1.21
 214                         [ 'addField', 'revision', 'rev_content_format', 'patch-revision-rev_content_format.sql' ],
 215                         [ 'addField', 'revision', 'rev_content_model', 'patch-revision-rev_content_model.sql' ],
 216                         [ 'addField', 'archive', 'ar_content_format', 'patch-archive-ar_content_format.sql' ],
 217                         [ 'addField', 'archive', 'ar_content_model', 'patch-archive-ar_content_model.sql' ],
 218                         [ 'addField', 'page', 'page_content_model', 'patch-page-page_content_model.sql' ],
 219                         [ 'enableContentHandlerUseDB' ],
 220                         [ 'dropField', 'site_stats', 'ss_admins', 'patch-drop-ss_admins.sql' ],
 221                         [ 'dropField', 'recentchanges', 'rc_moved_to_title', 'patch-rc_moved.sql' ],
 222                         [ 'addTable', 'sites', 'patch-sites.sql' ],
 223                         [ 'addField', 'filearchive', 'fa_sha1', 'patch-fa_sha1.sql' ],
 224                         [ 'addField', 'job', 'job_token', 'patch-job_token.sql' ],
 225                         [ 'addField', 'job', 'job_attempts', 'patch-job_attempts.sql' ],
 226                         [ 'doEnableProfiling' ],
 227                         [ 'addField', 'uploadstash', 'us_props', 'patch-uploadstash-us_props.sql' ],
 228                         [ 'modifyField', 'user_groups', 'ug_group', 'patch-ug_group-length-increase-255.sql' ],
 229                         [ 'modifyField', 'user_former_groups', 'ufg_group',
 230                                 'patch-ufg_group-length-increase-255.sql' ],
 231                         [ 'addIndex', 'page_props', 'pp_propname_page',
 232                                 'patch-page_props-propname-page-index.sql' ],
 233                         [ 'addIndex', 'image', 'img_media_mime', 'patch-img_media_mime-index.sql' ],
 234
 235                         // 1.22
 236                         [ 'doIwlinksIndexNonUnique' ],
 237                         [ 'addIndex', 'iwlinks', 'iwl_prefix_from_title',
 238                                 'patch-iwlinks-from-title-index.sql' ],
 239                         [ 'addField', 'archive', 'ar_id', 'patch-archive-ar_id.sql' ],
 240                         [ 'addField', 'externallinks', 'el_id', 'patch-externallinks-el_id.sql' ],
 241
 242                         // 1.23
 243                         [ 'addField', 'recentchanges', 'rc_source', 'patch-rc_source.sql' ],
 244                         [ 'addIndex', 'logging', 'log_user_text_type_time',
 245                                 'patch-logging_user_text_type_time_index.sql' ],
 246                         [ 'addIndex', 'logging', 'log_user_text_time', 'patch-logging_user_text_time_index.sql' ],
 247                         [ 'addField', 'page', 'page_links_updated', 'patch-page_links_updated.sql' ],
 248                         [ 'addField', 'user', 'user_password_expires', 'patch-user_password_expire.sql' ],
 249
 250                         // 1.24
 251                         [ 'addField', 'page_props', 'pp_sortkey', 'patch-pp_sortkey.sql' ],
 252                         [ 'dropField', 'recentchanges', 'rc_cur_time', 'patch-drop-rc_cur_time.sql' ],
 253                         [ 'addIndex', 'watchlist', 'wl_user_notificationtimestamp',
 254                                 'patch-watchlist-user-notificationtimestamp-index.sql' ],
 255                         [ 'addField', 'page', 'page_lang', 'patch-page_lang.sql' ],
 256                         [ 'addField', 'pagelinks', 'pl_from_namespace', 'patch-pl_from_namespace.sql' ],
 257                         [ 'addField', 'templatelinks', 'tl_from_namespace', 'patch-tl_from_namespace.sql' ],
 258                         [ 'addField', 'imagelinks', 'il_from_namespace', 'patch-il_from_namespace.sql' ],
 259                         [ 'modifyField', 'image', 'img_major_mime',
 260                                 'patch-img_major_mime-chemical.sql' ],
 261                         [ 'modifyField', 'oldimage', 'oi_major_mime',
 262                                 'patch-oi_major_mime-chemical.sql' ],
 263                         [ 'modifyField', 'filearchive', 'fa_major_mime',
 264                                 'patch-fa_major_mime-chemical.sql' ],
 265
 266                         // 1.25
 267                         [ 'doUserNewTalkUseridUnsigned' ],
 268                         // note this patch covers other _comment and _description fields too
 269                         [ 'modifyField', 'recentchanges', 'rc_comment', 'patch-editsummary-length.sql' ],
 270
 271                         // 1.26
 272                         [ 'dropTable', 'hitcounter' ],
 273                         [ 'dropField', 'site_stats', 'ss_total_views', 'patch-drop-ss_total_views.sql' ],
 274                         [ 'dropField', 'page', 'page_counter', 'patch-drop-page_counter.sql' ],
 275
 276                         // 1.27
 277                         [ 'dropTable', 'msg_resource_links' ],
 278                         [ 'dropTable', 'msg_resource' ],
 279                         [ 'addTable', 'bot_passwords', 'patch-bot_passwords.sql' ],
 280                         [ 'addField', 'watchlist', 'wl_id', 'patch-watchlist-wl_id.sql' ],
 281                         [ 'dropIndex', 'categorylinks', 'cl_collation', 'patch-kill-cl_collation_index.sql' ],
 282                         [ 'addIndex', 'categorylinks', 'cl_collation_ext',
 283                                 'patch-add-cl_collation_ext_index.sql' ],
 284                         [ 'doCollationUpdate' ],
 285
 286                         // 1.28
 287                         [ 'addIndex', 'recentchanges', 'rc_name_type_patrolled_timestamp',
 288                                 'patch-add-rc_name_type_patrolled_timestamp_index.sql' ],
 289                         [ 'doRevisionPageRevIndexNonUnique' ],
 290                         [ 'doNonUniquePlTlIl' ],
 291                         [ 'addField', 'change_tag', 'ct_id', 'patch-change_tag-ct_id.sql' ],
 292                         [ 'addField', 'tag_summary', 'ts_id', 'patch-tag_summary-ts_id.sql' ],
 293                         [ 'modifyField', 'recentchanges', 'rc_ip', 'patch-rc_ip_modify.sql' ],
 294
 295                         // 1.29
 296                         [ 'addField', 'externallinks', 'el_index_60', 'patch-externallinks-el_index_60.sql' ],
 297                 ];
 298         }
 299
 300         /**
 301          * 1.4 betas were missing the 'binary' marker from logging.log_title,
 302          * which causes a collation mismatch error on joins in MySQL 4.1.
 303          *
 304          * @param string $table Table name
 305          * @param string $field Field name to check
 306          * @param string $patchFile Path to the patch to correct the field
 307          * @return bool
 308          */
 309         protected function checkBin( $table, $field, $patchFile ) {
 310                 if ( !$this->doTable( $table ) ) {
 311                         return true;
 312                 }
 313
 314                 /** @var MySQLField $fieldInfo */
 315                 $fieldInfo = $this->db->fieldInfo( $table, $field );
 316                 if ( $fieldInfo->isBinary() ) {
 317                         $this->output( "...$table table has correct $field encoding.\n" );
 318                 } else {
 319                         $this->applyPatch( $patchFile, false, "Fixing $field encoding on $table table" );
 320                 }
 321         }
 322
 323         /**
 324          * Check whether an index contain a field
 325          *
 326          * @param string $table Table name
 327          * @param string $index Index name to check
 328          * @param string $field Field that should be in the index
 329          * @return bool
 330          */
 331         protected function indexHasField( $table, $index, $field ) {
 332                 if ( !$this->doTable( $table ) ) {
 333                         return true;
 334                 }
 335
 336                 $info = $this->db->indexInfo( $table, $index, __METHOD__ );
 337                 if ( $info ) {
 338                         foreach ( $info as $row ) {
 339                                 if ( $row->Column_name == $field ) {
 340                                         $this->output( "...index $index on table $table includes field $field.\n" );
 341
 342                                         return true;
 343                                 }
 344                         }
 345                 }
 346                 $this->output( "...index $index on table $table has no field $field; added.\n" );
 347
 348                 return false;
 349         }
 350
 351         /**
 352          * Check that interwiki table exists; if it doesn't source it
 353          */
 354         protected function doInterwikiUpdate() {
 355                 global $IP;
 356
 357                 if ( !$this->doTable( 'interwiki' ) ) {
 358                         return true;
 359                 }
 360
 361                 if ( $this->db->tableExists( "interwiki", __METHOD__ ) ) {
 362                         $this->output( "...already have interwiki table\n" );
 363
 364                         return;
 365                 }
 366
 367                 $this->applyPatch( 'patch-interwiki.sql', false, 'Creating interwiki table' );
 368                 $this->applyPatch(
 369                         "$IP/maintenance/interwiki.sql",
 370                         true,
 371                         'Adding default interwiki definitions'
 372                 );
 373         }
 374
 375         /**
 376          * Check that proper indexes are in place
 377          */
 378         protected function doIndexUpdate() {
 379                 $meta = $this->db->fieldInfo( 'recentchanges', 'rc_timestamp' );
 380                 if ( $meta === false ) {
 381                         throw new MWException( 'Missing rc_timestamp field of recentchanges table. Should not happen.' );
 382                 }
 383                 if ( $meta->isMultipleKey() ) {
 384                         $this->output( "...indexes seem up to 20031107 standards.\n" );
 385
 386                         return;
 387                 }
 388
 389                 $this->applyPatch( 'patch-indexes.sql', true, "Updating indexes to 20031107" );
 390         }
 391
 392         protected function doOldLinksUpdate() {
 393                 $cl = $this->maintenance->runChild( 'ConvertLinks' );
 394                 $cl->execute();
 395         }
 396
 397         protected function doFixAncientImagelinks() {
 398                 $info = $this->db->fieldInfo( 'imagelinks', 'il_from' );
 399                 if ( !$info || $info->type() !== 'string' ) {
 400                         $this->output( "...il_from OK\n" );
 401
 402                         return;
 403                 }
 404
 405                 $applied = $this->applyPatch(
 406                         'patch-fix-il_from.sql',
 407                         false,
 408                         'Fixing ancient broken imagelinks table.'
 409                 );
 410
 411                 if ( $applied ) {
 412                         $this->output( "NOTE: you will have to run maintenance/refreshLinks.php after this." );
 413                 }
 414         }
 415
 416         /**
 417          * Check if we need to add talk page rows to the watchlist
 418          */
 419         function doWatchlistUpdate() {
 420                 $talk = $this->db->selectField( 'watchlist', 'count(*)', 'wl_namespace & 1', __METHOD__ );
 421                 $nontalk = $this->db->selectField(
 422                         'watchlist',
 423                         'count(*)',
 424                         'NOT (wl_namespace & 1)',
 425                         __METHOD__
 426                 );
 427                 if ( $talk == $nontalk ) {
 428                         $this->output( "...watchlist talk page rows already present.\n" );
 429
 430                         return;
 431                 }
 432
 433                 $this->output( "Adding missing watchlist talk page rows... " );
 434                 $this->db->insertSelect( 'watchlist', 'watchlist',
 435                         [
 436                                 'wl_user' => 'wl_user',
 437                                 'wl_namespace' => 'wl_namespace | 1',
 438                                 'wl_title' => 'wl_title',
 439                                 'wl_notificationtimestamp' => 'wl_notificationtimestamp'
 440                         ], [ 'NOT (wl_namespace & 1)' ], __METHOD__, 'IGNORE' );
 441                 $this->output( "done.\n" );
 442
 443                 $this->output( "Adding missing watchlist subject page rows... " );
 444                 $this->db->insertSelect( 'watchlist', 'watchlist',
 445                         [
 446                                 'wl_user' => 'wl_user',
 447                                 'wl_namespace' => 'wl_namespace & ~1',
 448                                 'wl_title' => 'wl_title',
 449                                 'wl_notificationtimestamp' => 'wl_notificationtimestamp'
 450                         ], [ 'wl_namespace & 1' ], __METHOD__, 'IGNORE' );
 451                 $this->output( "done.\n" );
 452         }
 453
 454         function doSchemaRestructuring() {
 455                 if ( $this->db->tableExists( 'page', __METHOD__ ) ) {
 456                         $this->output( "...page table already exists.\n" );
 457
 458                         return;
 459                 }
 460
 461                 $this->output( "...converting from cur/old to page/revision/text DB structure.\n" );
 462                 $this->output( wfTimestamp( TS_DB ) );
 463                 $this->output( "......checking for duplicate entries.\n" );
 464
 465                 list( $cur, $old, $page, $revision, $text ) = $this->db->tableNamesN(
 466                         'cur',
 467                         'old',
 468                         'page',
 469                         'revision',
 470                         'text'
 471                 );
 472
 473                 $rows = $this->db->query( "
 474                         SELECT cur_title, cur_namespace, COUNT(cur_namespace) AS c
 475                         FROM $cur
 476                         GROUP BY cur_title, cur_namespace
 477                         HAVING c>1",
 478                         __METHOD__
 479                 );
 480
 481                 if ( $rows->numRows() > 0 ) {
 482                         $this->output( wfTimestamp( TS_DB ) );
 483                         $this->output( "......<b>Found duplicate entries</b>\n" );
 484                         $this->output( sprintf( "<b>      %-60s %3s %5s</b>\n", 'Title', 'NS', 'Count' ) );
 485                         $duplicate = [];
 486                         foreach ( $rows as $row ) {
 487                                 if ( !isset( $duplicate[$row->cur_namespace] ) ) {
 488                                         $duplicate[$row->cur_namespace] = [];
 489                                 }
 490
 491                                 $duplicate[$row->cur_namespace][] = $row->cur_title;
 492                                 $this->output( sprintf(
 493                                         "      %-60s %3s %5s\n",
 494                                         $row->cur_title, $row->cur_namespace,
 495                                         $row->c
 496                                 ) );
 497                         }
 498                         $sql = "SELECT cur_title, cur_namespace, cur_id, cur_timestamp FROM $cur WHERE ";
 499                         $firstCond = true;
 500                         foreach ( $duplicate as $ns => $titles ) {
 501                                 if ( $firstCond ) {
 502                                         $firstCond = false;
 503                                 } else {
 504                                         $sql .= ' OR ';
 505                                 }
 506                                 $sql .= "( cur_namespace = {$ns} AND cur_title in (";
 507                                 $first = true;
 508                                 foreach ( $titles as $t ) {
 509                                         if ( $first ) {
 510                                                 $sql .= $this->db->addQuotes( $t );
 511                                                 $first = false;
 512                                         } else {
 513                                                 $sql .= ', ' . $this->db->addQuotes( $t );
 514                                         }
 515                                 }
 516                                 $sql .= ") ) \n";
 517                         }
 518                         # By sorting descending, the most recent entry will be the first in the list.
 519                         # All following entries will be deleted by the next while-loop.
 520                         $sql .= 'ORDER BY cur_namespace, cur_title, cur_timestamp DESC';
 521
 522                         $rows = $this->db->query( $sql, __METHOD__ );
 523
 524                         $prev_title = $prev_namespace = false;
 525                         $deleteId = [];
 526
 527                         foreach ( $rows as $row ) {
 528                                 if ( $prev_title == $row->cur_title && $prev_namespace == $row->cur_namespace ) {
 529                                         $deleteId[] = $row->cur_id;
 530                                 }
 531                                 $prev_title = $row->cur_title;
 532                                 $prev_namespace = $row->cur_namespace;
 533                         }
 534                         $sql = "DELETE FROM $cur WHERE cur_id IN ( " . implode( ',', $deleteId ) . ')';
 535                         $this->db->query( $sql, __METHOD__ );
 536                         $this->output( wfTimestamp( TS_DB ) );
 537                         $this->output( "......<b>Deleted</b> " . $this->db->affectedRows() . " records.\n" );
 538                 }
 539
 540                 $this->output( wfTimestamp( TS_DB ) );
 541                 $this->output( "......Creating tables.\n" );
 542                 $this->db->query( "CREATE TABLE $page (
 543                         page_id int(8) unsigned NOT NULL auto_increment,
 544                         page_namespace int NOT NULL,
 545                         page_title varchar(255) binary NOT NULL,
 546                         page_restrictions tinyblob NOT NULL,
 547                         page_is_redirect tinyint(1) unsigned NOT NULL default '0',
 548                         page_is_new tinyint(1) unsigned NOT NULL default '0',
 549                         page_random real unsigned NOT NULL,
 550                         page_touched char(14) binary NOT NULL default '',
 551                         page_latest int(8) unsigned NOT NULL,
 552                         page_len int(8) unsigned NOT NULL,
 553
 554                         PRIMARY KEY page_id (page_id),
 555                         UNIQUE INDEX name_title (page_namespace,page_title),
 556                         INDEX (page_random),
 557                         INDEX (page_len)
 558                         ) ENGINE=InnoDB", __METHOD__ );
 559                 $this->db->query( "CREATE TABLE $revision (
 560                         rev_id int(8) unsigned NOT NULL auto_increment,
 561                         rev_page int(8) unsigned NOT NULL,
 562                         rev_comment tinyblob NOT NULL,
 563                         rev_user int(5) unsigned NOT NULL default '0',
 564                         rev_user_text varchar(255) binary NOT NULL default '',
 565                         rev_timestamp char(14) binary NOT NULL default '',
 566                         rev_minor_edit tinyint(1) unsigned NOT NULL default '0',
 567                         rev_deleted tinyint(1) unsigned NOT NULL default '0',
 568                         rev_len int(8) unsigned,
 569                         rev_parent_id int(8) unsigned default NULL,
 570                         PRIMARY KEY rev_page_id (rev_page, rev_id),
 571                         UNIQUE INDEX rev_id (rev_id),
 572                         INDEX rev_timestamp (rev_timestamp),
 573                         INDEX page_timestamp (rev_page,rev_timestamp),
 574                         INDEX user_timestamp (rev_user,rev_timestamp),
 575                         INDEX usertext_timestamp (rev_user_text,rev_timestamp)
 576                         ) ENGINE=InnoDB", __METHOD__ );
 577
 578                 $this->output( wfTimestamp( TS_DB ) );
 579                 $this->output( "......Locking tables.\n" );
 580                 $this->db->query(
 581                         "LOCK TABLES $page WRITE, $revision WRITE, $old WRITE, $cur WRITE",
 582                         __METHOD__
 583                 );
 584
 585                 $maxold = intval( $this->db->selectField( 'old', 'max(old_id)', '', __METHOD__ ) );
 586                 $this->output( wfTimestamp( TS_DB ) );
 587                 $this->output( "......maxold is {$maxold}\n" );
 588
 589                 $this->output( wfTimestamp( TS_DB ) );
 590                 global $wgLegacySchemaConversion;
 591                 if ( $wgLegacySchemaConversion ) {
 592                         // Create HistoryBlobCurStub entries.
 593                         // Text will be pulled from the leftover 'cur' table at runtime.
 594                         $this->output( "......Moving metadata from cur; using blob references to text in cur table.\n" );
 595                         $cur_text = "concat('O:18:\"historyblobcurstub\":1:{s:6:\"mCurId\";i:',cur_id,';}')";
 596                         $cur_flags = "'object'";
 597                 } else {
 598                         // Copy all cur text in immediately: this may take longer but avoids
 599                         // having to keep an extra table around.
 600                         $this->output( "......Moving text from cur.\n" );
 601                         $cur_text = 'cur_text';
 602                         $cur_flags = "''";
 603                 }
 604                 $this->db->query(
 605                         "INSERT INTO $old (old_namespace, old_title, old_text, old_comment, old_user,
 606                                 old_user_text, old_timestamp, old_minor_edit, old_flags)
 607                         SELECT cur_namespace, cur_title, $cur_text, cur_comment, cur_user, cur_user_text,
 608                                 cur_timestamp, cur_minor_edit, $cur_flags
 609                         FROM $cur",
 610                         __METHOD__
 611                 );
 612
 613                 $this->output( wfTimestamp( TS_DB ) );
 614                 $this->output( "......Setting up revision table.\n" );
 615                 $this->db->query(
 616                         "INSERT INTO $revision (rev_id, rev_page, rev_comment, rev_user,
 617                                 rev_user_text, rev_timestamp, rev_minor_edit)
 618                         SELECT old_id, cur_id, old_comment, old_user, old_user_text,
 619                                 old_timestamp, old_minor_edit
 620                         FROM $old,$cur WHERE old_namespace=cur_namespace AND old_title=cur_title",
 621                         __METHOD__
 622                 );
 623
 624                 $this->output( wfTimestamp( TS_DB ) );
 625                 $this->output( "......Setting up page table.\n" );
 626                 $this->db->query(
 627                         "INSERT INTO $page (page_id, page_namespace, page_title,
 628                                 page_restrictions, page_is_redirect, page_is_new, page_random,
 629                                 page_touched, page_latest, page_len)
 630                         SELECT cur_id, cur_namespace, cur_title, cur_restrictions,
 631                                 cur_is_redirect, cur_is_new, cur_random, cur_touched, rev_id, LENGTH(cur_text)
 632                         FROM $cur,$revision
 633                         WHERE cur_id=rev_page AND rev_timestamp=cur_timestamp AND rev_id > {$maxold}",
 634                         __METHOD__
 635                 );
 636
 637                 $this->output( wfTimestamp( TS_DB ) );
 638                 $this->output( "......Unlocking tables.\n" );
 639                 $this->db->query( "UNLOCK TABLES", __METHOD__ );
 640
 641                 $this->output( wfTimestamp( TS_DB ) );
 642                 $this->output( "......Renaming old.\n" );
 643                 $this->db->query( "ALTER TABLE $old RENAME TO $text", __METHOD__ );
 644
 645                 $this->output( wfTimestamp( TS_DB ) );
 646                 $this->output( "...done.\n" );
 647         }
 648
 649         protected function doNamespaceSize() {
 650                 $tables = [
 651                         'page' => 'page',
 652                         'archive' => 'ar',
 653                         'recentchanges' => 'rc',
 654                         'watchlist' => 'wl',
 655                         'querycache' => 'qc',
 656                         'logging' => 'log',
 657                 ];
 658                 foreach ( $tables as $table => $prefix ) {
 659                         $field = $prefix . '_namespace';
 660
 661                         $tablename = $this->db->tableName( $table );
 662                         $result = $this->db->query( "SHOW COLUMNS FROM $tablename LIKE '$field'", __METHOD__ );
 663                         $info = $this->db->fetchObject( $result );
 664
 665                         if ( substr( $info->Type, 0, 3 ) == 'int' ) {
 666                                 $this->output( "...$field is already a full int ($info->Type).\n" );
 667                         } else {
 668                                 $this->output( "Promoting $field from $info->Type to int... " );
 669                                 $this->db->query( "ALTER TABLE $tablename MODIFY $field int NOT NULL", __METHOD__ );
 670                                 $this->output( "done.\n" );
 671                         }
 672                 }
 673         }
 674
 675         protected function doPagelinksUpdate() {
 676                 if ( $this->db->tableExists( 'pagelinks', __METHOD__ ) ) {
 677                         $this->output( "...already have pagelinks table.\n" );
 678
 679                         return;
 680                 }
 681
 682                 $this->applyPatch(
 683                         'patch-pagelinks.sql',
 684                         false,
 685                         'Converting links and brokenlinks tables to pagelinks'
 686                 );
 687
 688                 global $wgContLang;
 689                 foreach ( $wgContLang->getNamespaces() as $ns => $name ) {
 690                         if ( $ns == 0 ) {
 691                                 continue;
 692                         }
 693
 694                         $this->output( "Cleaning up broken links for namespace $ns... " );
 695                         $this->db->update( 'pagelinks',
 696                                 [
 697                                         'pl_namespace' => $ns,
 698                                         "pl_title = TRIM(LEADING {$this->db->addQuotes( "$name:" )} FROM pl_title)",
 699                                 ],
 700                                 [
 701                                         'pl_namespace' => 0,
 702                                         'pl_title' . $this->db->buildLike( "$name:", $this->db->anyString() ),
 703                                 ],
 704                                 __METHOD__
 705                         );
 706                         $this->output( "done.\n" );
 707                 }
 708         }
 709
 710         protected function doUserUniqueUpdate() {
 711                 if ( !$this->doTable( 'user' ) ) {
 712                         return true;
 713                 }
 714
 715                 $duper = new UserDupes( $this->db, [ $this, 'output' ] );
 716                 if ( $duper->hasUniqueIndex() ) {
 717                         $this->output( "...already have unique user_name index.\n" );
 718
 719                         return;
 720                 }
 721
 722                 if ( !$duper->clearDupes() ) {
 723                         $this->output( "WARNING: This next step will probably fail due to unfixed duplicates...\n" );
 724                 }
 725                 $this->applyPatch( 'patch-user_nameindex.sql', false, "Adding unique index on user_name" );
 726         }
 727
 728         protected function doUserGroupsUpdate() {
 729                 if ( !$this->doTable( 'user_groups' ) ) {
 730                         return true;
 731                 }
 732
 733                 if ( $this->db->tableExists( 'user_groups', __METHOD__ ) ) {
 734                         $info = $this->db->fieldInfo( 'user_groups', 'ug_group' );
 735                         if ( $info->type() == 'int' ) {
 736                                 $oldug = $this->db->tableName( 'user_groups' );
 737                                 $newug = $this->db->tableName( 'user_groups_bogus' );
 738                                 $this->output( "user_groups table exists but is in bogus intermediate " .
 739                                         "format. Renaming to $newug... " );
 740                                 $this->db->query( "ALTER TABLE $oldug RENAME TO $newug", __METHOD__ );
 741                                 $this->output( "done.\n" );
 742
 743                                 $this->applyPatch( 'patch-user_groups.sql', false, "Re-adding fresh user_groups table" );
 744
 745                                 $this->output( "***\n" );
 746                                 $this->output( "*** WARNING: You will need to manually fix up user " .
 747                                         "permissions in the user_groups\n" );
 748                                 $this->output( "*** table. Old 1.5 alpha versions did some pretty funky stuff...\n" );
 749                                 $this->output( "***\n" );
 750                         } else {
 751                                 $this->output( "...user_groups table exists and is in current format.\n" );
 752                         }
 753
 754                         return;
 755                 }
 756
 757                 $this->applyPatch( 'patch-user_groups.sql', false, "Adding user_groups table" );
 758
 759                 if ( !$this->db->tableExists( 'user_rights', __METHOD__ ) ) {
 760                         if ( $this->db->fieldExists( 'user', 'user_rights', __METHOD__ ) ) {
 761                                 $this->applyPatch(
 762                                         'patch-user_rights.sql',
 763                                         false,
 764                                         'Upgrading from a 1.3 or older database? Breaking out user_rights for conversion'
 765                                 );
 766                         } else {
 767                                 $this->output( "*** WARNING: couldn't locate user_rights table or field for upgrade.\n" );
 768                                 $this->output( "*** You may need to manually configure some sysops by manipulating\n" );
 769                                 $this->output( "*** the user_groups table.\n" );
 770
 771                                 return;
 772                         }
 773                 }
 774
 775                 $this->output( "Converting user_rights table to user_groups... " );
 776                 $result = $this->db->select( 'user_rights',
 777                         [ 'ur_user', 'ur_rights' ],
 778                         [ "ur_rights != ''" ],
 779                         __METHOD__ );
 780
 781                 foreach ( $result as $row ) {
 782                         $groups = array_unique(
 783                                 array_map( 'trim',
 784                                         explode( ',', $row->ur_rights ) ) );
 785
 786                         foreach ( $groups as $group ) {
 787                                 $this->db->insert( 'user_groups',
 788                                         [
 789                                                 'ug_user' => $row->ur_user,
 790                                                 'ug_group' => $group ],
 791                                         __METHOD__ );
 792                         }
 793                 }
 794                 $this->output( "done.\n" );
 795         }
 796
 797         /**
 798          * Make sure wl_notificationtimestamp can be NULL,
 799          * and update old broken items.
 800          */
 801         protected function doWatchlistNull() {
 802                 $info = $this->db->fieldInfo( 'watchlist', 'wl_notificationtimestamp' );
 803                 if ( !$info ) {
 804                         return;
 805                 }
 806                 if ( $info->isNullable() ) {
 807                         $this->output( "...wl_notificationtimestamp is already nullable.\n" );
 808
 809                         return;
 810                 }
 811
 812                 $this->applyPatch(
 813                         'patch-watchlist-null.sql',
 814                         false,
 815                         'Making wl_notificationtimestamp nullable'
 816                 );
 817         }
 818
 819         /**
 820          * Set page_random field to a random value where it is equals to 0.
 821          *
 822          * @see bug 3946
 823          */
 824         protected function doPageRandomUpdate() {
 825                 $page = $this->db->tableName( 'page' );
 826                 $this->db->query( "UPDATE $page SET page_random = RAND() WHERE page_random = 0", __METHOD__ );
 827                 $rows = $this->db->affectedRows();
 828
 829                 if ( $rows ) {
 830                         $this->output( "Set page_random to a random value on $rows rows where it was set to 0\n" );
 831                 } else {
 832                         $this->output( "...no page_random rows needed to be set\n" );
 833                 }
 834         }
 835
 836         protected function doTemplatelinksUpdate() {
 837                 if ( $this->db->tableExists( 'templatelinks', __METHOD__ ) ) {
 838                         $this->output( "...templatelinks table already exists\n" );
 839
 840                         return;
 841                 }
 842
 843                 $this->applyPatch( 'patch-templatelinks.sql', false, "Creating templatelinks table" );
 844
 845                 $this->output( "Populating...\n" );
 846                 if ( wfGetLB()->getServerCount() > 1 ) {
 847                         // Slow, replication-friendly update
 848                         $res = $this->db->select( 'pagelinks', [ 'pl_from', 'pl_namespace', 'pl_title' ],
 849                                 [ 'pl_namespace' => NS_TEMPLATE ], __METHOD__ );
 850                         $count = 0;
 851                         foreach ( $res as $row ) {
 852                                 $count = ( $count + 1 ) % 100;
 853                                 if ( $count == 0 ) {
 854                                         wfGetLBFactory()->waitForReplication( [ 'wiki' => wfWikiID() ] );
 855                                 }
 856                                 $this->db->insert( 'templatelinks',
 857                                         [
 858                                                 'tl_from' => $row->pl_from,
 859                                                 'tl_namespace' => $row->pl_namespace,
 860                                                 'tl_title' => $row->pl_title,
 861                                         ], __METHOD__
 862                                 );
 863                         }
 864                 } else {
 865                         // Fast update
 866                         $this->db->insertSelect( 'templatelinks', 'pagelinks',
 867                                 [
 868                                         'tl_from' => 'pl_from',
 869                                         'tl_namespace' => 'pl_namespace',
 870                                         'tl_title' => 'pl_title'
 871                                 ], [
 872                                         'pl_namespace' => 10
 873                                 ], __METHOD__
 874                         );
 875                 }
 876                 $this->output( "Done. Please run maintenance/refreshLinks.php for a more " .
 877                         "thorough templatelinks update.\n" );
 878         }
 879
 880         protected function doBacklinkingIndicesUpdate() {
 881                 if ( !$this->indexHasField( 'pagelinks', 'pl_namespace', 'pl_from' ) ||
 882                         !$this->indexHasField( 'templatelinks', 'tl_namespace', 'tl_from' ) ||
 883                         !$this->indexHasField( 'imagelinks', 'il_to', 'il_from' )
 884                 ) {
 885                         $this->applyPatch( 'patch-backlinkindexes.sql', false, "Updating backlinking indices" );
 886                 }
 887         }
 888
 889         /**
 890          * Adding page_restrictions table, obsoleting page.page_restrictions.
 891          * Migrating old restrictions to new table
 892          * -- Andrew Garrett, January 2007.
 893          */
 894         protected function doRestrictionsUpdate() {
 895                 if ( $this->db->tableExists( 'page_restrictions', __METHOD__ ) ) {
 896                         $this->output( "...page_restrictions table already exists.\n" );
 897
 898                         return;
 899                 }
 900
 901                 $this->applyPatch(
 902                         'patch-page_restrictions.sql',
 903                         false,
 904                         'Creating page_restrictions table (1/2)'
 905                 );
 906                 $this->applyPatch(
 907                         'patch-page_restrictions_sortkey.sql',
 908                         false,
 909                         'Creating page_restrictions table (2/2)'
 910                 );
 911                 $this->output( "done.\n" );
 912
 913                 $this->output( "Migrating old restrictions to new table...\n" );
 914                 $task = $this->maintenance->runChild( 'UpdateRestrictions' );
 915                 $task->execute();
 916         }
 917
 918         protected function doCategorylinksIndicesUpdate() {
 919                 if ( !$this->indexHasField( 'categorylinks', 'cl_sortkey', 'cl_from' ) ) {
 920                         $this->applyPatch( 'patch-categorylinksindex.sql', false, "Updating categorylinks Indices" );
 921                 }
 922         }
 923
 924         protected function doCategoryPopulation() {
 925                 if ( $this->updateRowExists( 'populate category' ) ) {
 926                         $this->output( "...category table already populated.\n" );
 927
 928                         return;
 929                 }
 930
 931                 $this->output(
 932                         "Populating category table, printing progress markers. " .
 933                         "For large databases, you\n" .
 934                         "may want to hit Ctrl-C and do this manually with maintenance/\n" .
 935                         "populateCategory.php.\n"
 936                 );
 937                 $task = $this->maintenance->runChild( 'PopulateCategory' );
 938                 $task->execute();
 939                 $this->output( "Done populating category table.\n" );
 940         }
 941
 942         protected function doPopulateParentId() {
 943                 if ( !$this->updateRowExists( 'populate rev_parent_id' ) ) {
 944                         $this->output(
 945                                 "Populating rev_parent_id fields, printing progress markers. For large\n" .
 946                                 "databases, you may want to hit Ctrl-C and do this manually with\n" .
 947                                 "maintenance/populateParentId.php.\n" );
 948
 949                         $task = $this->maintenance->runChild( 'PopulateParentId' );
 950                         $task->execute();
 951                 }
 952         }
 953
 954         protected function doMaybeProfilingMemoryUpdate() {
 955                 if ( !$this->doTable( 'profiling' ) ) {
 956                         return true;
 957                 }
 958
 959                 if ( !$this->db->tableExists( 'profiling', __METHOD__ ) ) {
 960                         return true;
 961                 } elseif ( $this->db->fieldExists( 'profiling', 'pf_memory', __METHOD__ ) ) {
 962                         $this->output( "...profiling table has pf_memory field.\n" );
 963
 964                         return true;
 965                 }
 966
 967                 return $this->applyPatch(
 968                         'patch-profiling-memory.sql',
 969                         false,
 970                         'Adding pf_memory field to table profiling'
 971                 );
 972         }
 973
 974         protected function doFilearchiveIndicesUpdate() {
 975                 $info = $this->db->indexInfo( 'filearchive', 'fa_user_timestamp', __METHOD__ );
 976                 if ( !$info ) {
 977                         $this->applyPatch( 'patch-filearchive-user-index.sql', false, "Updating filearchive indices" );
 978                 }
 979
 980                 return true;
 981         }
 982
 983         protected function doNonUniquePlTlIl() {
 984                 $info = $this->db->indexInfo( 'pagelinks', 'pl_namespace' );
 985                 if ( is_array( $info ) && $info[0]->Non_unique ) {
 986                         $this->output( "...pl_namespace, tl_namespace, il_to indices are already non-UNIQUE.\n" );
 987
 988                         return true;
 989                 }
 990                 if ( $this->skipSchema ) {
 991                         $this->output( "...skipping schema change (making pl_namespace, tl_namespace " .
 992                                 "and il_to indices non-UNIQUE).\n" );
 993
 994                         return false;
 995                 }
 996
 997                 return $this->applyPatch(
 998                         'patch-pl-tl-il-nonunique.sql',
 999                         false,
1000                         'Making pl_namespace, tl_namespace and il_to indices non-UNIQUE'
1001                 );
1002         }
1003
1004         protected function doUpdateMimeMinorField() {
1005                 if ( $this->updateRowExists( 'mime_minor_length' ) ) {
1006                         $this->output( "...*_mime_minor fields are already long enough.\n" );
1007
1008                         return;
1009                 }
1010
1011                 $this->applyPatch(
1012                         'patch-mime_minor_length.sql',
1013                         false,
1014                         'Altering all *_mime_minor fields to 100 bytes in size'
1015                 );
1016         }
1017
1018         protected function doClFieldsUpdate() {
1019                 if ( $this->updateRowExists( 'cl_fields_update' ) ) {
1020                         $this->output( "...categorylinks up-to-date.\n" );
1021
1022                         return;
1023                 }
1024
1025                 $this->applyPatch(
1026                         'patch-categorylinks-better-collation2.sql',
1027                         false,
1028                         'Updating categorylinks (again)'
1029                 );
1030         }
1031
1032         protected function doLangLinksLengthUpdate() {
1033                 $langlinks = $this->db->tableName( 'langlinks' );
1034                 $res = $this->db->query( "SHOW COLUMNS FROM $langlinks LIKE 'll_lang'" );
1035                 $row = $this->db->fetchObject( $res );
1036
1037                 if ( $row && $row->Type == "varbinary(10)" ) {
1038                         $this->applyPatch(
1039                                 'patch-langlinks-ll_lang-20.sql',
1040                                 false,
1041                                 'Updating length of ll_lang in langlinks'
1042                         );
1043                 } else {
1044                         $this->output( "...ll_lang is up-to-date.\n" );
1045                 }
1046         }
1047
1048         protected function doUserNewTalkTimestampNotNull() {
1049                 if ( !$this->doTable( 'user_newtalk' ) ) {
1050                         return true;
1051                 }
1052
1053                 $info = $this->db->fieldInfo( 'user_newtalk', 'user_last_timestamp' );
1054                 if ( $info === false ) {
1055                         return;
1056                 }
1057                 if ( $info->isNullable() ) {
1058                         $this->output( "...user_last_timestamp is already nullable.\n" );
1059
1060                         return;
1061                 }
1062
1063                 $this->applyPatch(
1064                         'patch-user-newtalk-timestamp-null.sql',
1065                         false,
1066                         'Making user_last_timestamp nullable'
1067                 );
1068         }
1069
1070         protected function doIwlinksIndexNonUnique() {
1071                 $info = $this->db->indexInfo( 'iwlinks', 'iwl_prefix_title_from' );
1072                 if ( is_array( $info ) && $info[0]->Non_unique ) {
1073                         $this->output( "...iwl_prefix_title_from index is already non-UNIQUE.\n" );
1074
1075                         return true;
1076                 }
1077                 if ( $this->skipSchema ) {
1078                         $this->output( "...skipping schema change (making iwl_prefix_title_from index non-UNIQUE).\n" );
1079
1080                         return false;
1081                 }
1082
1083                 return $this->applyPatch(
1084                         'patch-iwl_prefix_title_from-non-unique.sql',
1085                         false,
1086                         'Making iwl_prefix_title_from index non-UNIQUE'
1087                 );
1088         }
1089
1090         protected function doUserNewTalkUseridUnsigned() {
1091                 if ( !$this->doTable( 'user_newtalk' ) ) {
1092                         return true;
1093                 }
1094
1095                 $info = $this->db->fieldInfo( 'user_newtalk', 'user_id' );
1096                 if ( $info === false ) {
1097                         return true;
1098                 }
1099                 if ( $info->isUnsigned() ) {
1100                         $this->output( "...user_id is already unsigned int.\n" );
1101
1102                         return true;
1103                 }
1104
1105                 return $this->applyPatch(
1106                         'patch-user-newtalk-userid-unsigned.sql',
1107                         false,
1108                         'Making user_id unsigned int'
1109                 );
1110         }
1111
1112         protected function doRevisionPageRevIndexNonUnique() {
1113                 if ( !$this->doTable( 'revision' ) ) {
1114                         return true;
1115                 } elseif ( !$this->db->indexExists( 'revision', 'rev_page_id' ) ) {
1116                         $this->output( "...rev_page_id index not found on revision.\n" );
1117                         return true;
1118                 }
1119
1120                 if ( !$this->db->indexUnique( 'revision', 'rev_page_id' ) ) {
1121                         $this->output( "...rev_page_id index already non-unique.\n" );
1122                         return true;
1123                 }
1124
1125                 return $this->applyPatch(
1126                         'patch-revision-page-rev-index-nonunique.sql',
1127                         false,
1128                         'Making rev_page_id index non-unique'
1129                 );
1130         }
1131
1132         public function getSchemaVars() {
1133                 global $wgDBTableOptions;
1134
1135                 $vars = [];
1136                 $vars['wgDBTableOptions'] = str_replace( 'TYPE', 'ENGINE', $wgDBTableOptions );
1137                 $vars['wgDBTableOptions'] = str_replace(
1138                         'CHARSET=mysql4',
1139                         'CHARSET=binary',
1140                         $vars['wgDBTableOptions']
1141                 );
1142
1143                 return $vars;
1144         }
1145 }