Add support for SQLite open flags

Author: BohwaZ

NEWS

@@ -43,6 +43,9 @@ PHP                                                                        NEWS
   . Fixed bug #74631 (PDO_PCO with PHP-FPM: OCI environment initialized
     before PHP-FPM sets it up). (Ingmar Runge)
 
+- PDO SQLite
+  . Add support for additional open flags
+
 - phar:
   . Fixed bug #74991 (include_path has a 4096 char limit in some cases).
     (bwbroersma)

ext/pdo_sqlite/pdo_sqlite.c

@@ -73,6 +73,11 @@ PHP_MINIT_FUNCTION(pdo_sqlite)
 	REGISTER_PDO_CLASS_CONST_LONG("SQLITE_DETERMINISTIC", (zend_long)SQLITE_DETERMINISTIC);
 #endif
 
+	REGISTER_PDO_CLASS_CONST_LONG("SQLITE_ATTR_OPEN_FLAGS", (zend_long)PDO_SQLITE_ATTR_OPEN_FLAGS);
+	REGISTER_PDO_CLASS_CONST_LONG("SQLITE_OPEN_READONLY", (zend_long)SQLITE_OPEN_READONLY);
+	REGISTER_PDO_CLASS_CONST_LONG("SQLITE_OPEN_READWRITE", (zend_long)SQLITE_OPEN_READWRITE);
+	REGISTER_PDO_CLASS_CONST_LONG("SQLITE_OPEN_CREATE", (zend_long)SQLITE_OPEN_CREATE);
+
 	return php_pdo_register_driver(&pdo_sqlite_driver);
 }
 /* }}} */

ext/pdo_sqlite/php_pdo_sqlite_int.h

@@ -75,4 +75,9 @@ extern int _pdo_sqlite_error(pdo_dbh_t *dbh, pdo_stmt_t *stmt, const char *file,
 #define pdo_sqlite_error_stmt(s) _pdo_sqlite_error(stmt->dbh, stmt, __FILE__, __LINE__)
 
 extern struct pdo_stmt_methods sqlite_stmt_methods;
+
+enum {
+	PDO_SQLITE_ATTR_OPEN_FLAGS = PDO_ATTR_DRIVER_SPECIFIC,
+};
+
 #endif

ext/pdo_sqlite/sqlite_driver.c

@@ -791,7 +791,7 @@ static int pdo_sqlite_handle_factory(pdo_dbh_t *dbh, zval *driver_options) /* {{
 {
 	pdo_sqlite_db_handle *H;
 	int i, ret = 0;
-	zend_long timeout = 60;
+	zend_long timeout = 60, flags;
 	char *filename;
 
 	H = pecalloc(1, sizeof(pdo_sqlite_db_handle), dbh->is_persistent);
@@ -809,7 +809,14 @@ static int pdo_sqlite_handle_factory(pdo_dbh_t *dbh, zval *driver_options) /* {{
 		goto cleanup;
 	}
 
+	flags = pdo_attr_lval(driver_options, PDO_SQLITE_ATTR_OPEN_FLAGS, SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE);
+
+#if SQLITE_VERSION_NUMBER >= 3005000
+	i = sqlite3_open_v2(filename, &H->db, flags, NULL);
+#else
 	i = sqlite3_open(filename, &H->db);
+#endif
+
 	efree(filename);
 
 	if (i != SQLITE_OK) {

ext/pdo_sqlite/tests/pdo_sqlite_open_flags.phpt

@@ -0,0 +1,33 @@
+--TEST--
+PDO_sqlite: Testing open flags
+--SKIPIF--
+<?php if (!extension_loaded('pdo_sqlite')) print 'skip not loaded'; ?>
+--FILE--
+<?php
+
+$filename = tempnam(sys_get_temp_dir(), 'sqlite');
+
+// Default open flag is read-write|create
+$db = new PDO('sqlite:' . $filename, null, null, [PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION]);
+
+var_dump($db->exec('CREATE TABLE test1 (id INT);'));
+
+try {
+	$db = new PDO('sqlite:' . $filename, null, null, [PDO::SQLITE_ATTR_OPEN_FLAGS => PDO::SQLITE_OPEN_READONLY, PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION]);
+
+	var_dump($db->exec('CREATE TABLE test2 (id INT);'));
+}
+finally {
+	// Cleanup
+	unlink($filename);
+}
+
+?>
+--EXPECTF--
+int(0)
+
+Fatal error: Uncaught PDOException: SQLSTATE[HY000]: General error: 8 attempt to write a readonly database in %s
+Stack trace:
+%s
+#1 {main}
+  thrown in %s