summaryrefslogtreecommitdiff
path: root/includes/installer/SqliteInstaller.php
blob: 351b022329dabcdd24345a22aa93bce9ac331ae7 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
<?php
/**
 * Sqlite-specific installer.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 * http://www.gnu.org/copyleft/gpl.html
 *
 * @file
 * @ingroup Deployment
 */

/**
 * Class for setting up the MediaWiki database using SQLLite.
 *
 * @ingroup Deployment
 * @since 1.17
 */
class SqliteInstaller extends DatabaseInstaller {
	const MINIMUM_VERSION = '3.3.7';

	/**
	 * @var DatabaseSqlite
	 */
	public $db;

	protected $globalNames = array(
		'wgDBname',
		'wgSQLiteDataDir',
	);

	public function getName() {
		return 'sqlite';
	}

	public function isCompiled() {
		return self::checkExtension( 'pdo_sqlite' );
	}

	/**
	 *
	 * @return Status
	 */
	public function checkPrerequisites() {
		$result = Status::newGood();
		// Bail out if SQLite is too old
		$db = new DatabaseSqliteStandalone( ':memory:' );
		if ( version_compare( $db->getServerVersion(), self::MINIMUM_VERSION, '<' ) ) {
			$result->fatal( 'config-outdated-sqlite', $db->getServerVersion(), self::MINIMUM_VERSION );
		}
		// Check for FTS3 full-text search module
		if ( DatabaseSqlite::getFulltextSearchModule() != 'FTS3' ) {
			$result->warning( 'config-no-fts3' );
		}

		return $result;
	}

	public function getGlobalDefaults() {
		if ( isset( $_SERVER['DOCUMENT_ROOT'] ) ) {
			$path = str_replace(
				array( '/', '\\' ),
				DIRECTORY_SEPARATOR,
				dirname( $_SERVER['DOCUMENT_ROOT'] ) . '/data'
			);

			return array( 'wgSQLiteDataDir' => $path );
		} else {
			return array();
		}
	}

	public function getConnectForm() {
		return $this->getTextBox(
			'wgSQLiteDataDir',
			'config-sqlite-dir', array(),
			$this->parent->getHelpBox( 'config-sqlite-dir-help' )
		) .
		$this->getTextBox(
			'wgDBname',
			'config-db-name',
			array(),
			$this->parent->getHelpBox( 'config-sqlite-name-help' )
		);
	}

	/**
	 * Safe wrapper for PHP's realpath() that fails gracefully if it's unable to canonicalize the path.
	 *
	 * @param string $path
	 *
	 * @return string
	 */
	private static function realpath( $path ) {
		$result = realpath( $path );
		if ( !$result ) {
			return $path;
		}

		return $result;
	}

	/**
	 * @return Status
	 */
	public function submitConnectForm() {
		$this->setVarsFromRequest( array( 'wgSQLiteDataDir', 'wgDBname' ) );

		# Try realpath() if the directory already exists
		$dir = self::realpath( $this->getVar( 'wgSQLiteDataDir' ) );
		$result = self::dataDirOKmaybeCreate( $dir, true /* create? */ );
		if ( $result->isOK() ) {
			# Try expanding again in case we've just created it
			$dir = self::realpath( $dir );
			$this->setVar( 'wgSQLiteDataDir', $dir );
		}
		# Table prefix is not used on SQLite, keep it empty
		$this->setVar( 'wgDBprefix', '' );

		return $result;
	}

	/**
	 * @param string $dir
	 * @param bool $create
	 * @return Status
	 */
	private static function dataDirOKmaybeCreate( $dir, $create = false ) {
		if ( !is_dir( $dir ) ) {
			if ( !is_writable( dirname( $dir ) ) ) {
				$webserverGroup = Installer::maybeGetWebserverPrimaryGroup();
				if ( $webserverGroup !== null ) {
					return Status::newFatal(
						'config-sqlite-parent-unwritable-group',
						$dir, dirname( $dir ), basename( $dir ),
						$webserverGroup
					);
				} else {
					return Status::newFatal(
						'config-sqlite-parent-unwritable-nogroup',
						$dir, dirname( $dir ), basename( $dir )
					);
				}
			}

			# Called early on in the installer, later we just want to sanity check
			# if it's still writable
			if ( $create ) {
				wfSuppressWarnings();
				$ok = wfMkdirParents( $dir, 0700, __METHOD__ );
				wfRestoreWarnings();
				if ( !$ok ) {
					return Status::newFatal( 'config-sqlite-mkdir-error', $dir );
				}
				# Put a .htaccess file in in case the user didn't take our advice
				file_put_contents( "$dir/.htaccess", "Deny from all\n" );
			}
		}
		if ( !is_writable( $dir ) ) {
			return Status::newFatal( 'config-sqlite-dir-unwritable', $dir );
		}

		# We haven't blown up yet, fall through
		return Status::newGood();
	}

	/**
	 * @return Status
	 */
	public function openConnection() {
		global $wgSQLiteDataDir;

		$status = Status::newGood();
		$dir = $this->getVar( 'wgSQLiteDataDir' );
		$dbName = $this->getVar( 'wgDBname' );
		try {
			# @todo FIXME: Need more sensible constructor parameters, e.g. single associative array
			# Setting globals kind of sucks
			$wgSQLiteDataDir = $dir;
			$db = new DatabaseSqlite( false, false, false, $dbName );
			$status->value = $db;
		} catch ( DBConnectionError $e ) {
			$status->fatal( 'config-sqlite-connection-error', $e->getMessage() );
		}

		return $status;
	}

	/**
	 * @return bool
	 */
	public function needsUpgrade() {
		$dir = $this->getVar( 'wgSQLiteDataDir' );
		$dbName = $this->getVar( 'wgDBname' );
		// Don't create the data file yet
		if ( !file_exists( DatabaseSqlite::generateFileName( $dir, $dbName ) ) ) {
			return false;
		}

		// If the data file exists, look inside it
		return parent::needsUpgrade();
	}

	/**
	 * @return Status
	 */
	public function setupDatabase() {
		$dir = $this->getVar( 'wgSQLiteDataDir' );

		# Sanity check. We checked this before but maybe someone deleted the
		# data dir between then and now
		$dir_status = self::dataDirOKmaybeCreate( $dir, false /* create? */ );
		if ( !$dir_status->isOK() ) {
			return $dir_status;
		}

		$db = $this->getVar( 'wgDBname' );
		$file = DatabaseSqlite::generateFileName( $dir, $db );
		if ( file_exists( $file ) ) {
			if ( !is_writable( $file ) ) {
				return Status::newFatal( 'config-sqlite-readonly', $file );
			}
		} else {
			if ( file_put_contents( $file, '' ) === false ) {
				return Status::newFatal( 'config-sqlite-cant-create-db', $file );
			}
		}
		// nuke the unused settings for clarity
		$this->setVar( 'wgDBserver', '' );
		$this->setVar( 'wgDBuser', '' );
		$this->setVar( 'wgDBpassword', '' );
		$this->setupSchemaVars();

		return $this->getConnection();
	}

	/**
	 * @return Status
	 */
	public function createTables() {
		$status = parent::createTables();

		return $this->setupSearchIndex( $status );
	}

	/**
	 * @param Status $status
	 * @return Status
	 */
	public function setupSearchIndex( &$status ) {
		global $IP;

		$module = DatabaseSqlite::getFulltextSearchModule();
		$fts3tTable = $this->db->checkForEnabledSearch();
		if ( $fts3tTable && !$module ) {
			$status->warning( 'config-sqlite-fts3-downgrade' );
			$this->db->sourceFile( "$IP/maintenance/sqlite/archives/searchindex-no-fts.sql" );
		} elseif ( !$fts3tTable && $module == 'FTS3' ) {
			$this->db->sourceFile( "$IP/maintenance/sqlite/archives/searchindex-fts3.sql" );
		}

		return $status;
	}

	/**
	 * @return string
	 */
	public function getLocalSettings() {
		$dir = LocalSettingsGenerator::escapePhpString( $this->getVar( 'wgSQLiteDataDir' ) );

		return "# SQLite-specific settings
\$wgSQLiteDataDir = \"{$dir}\";";
	}
}