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do not overwrite custom set module paths
[nominatim.git] / lib / setup / SetupClass.php
diff --git a/lib/setup/SetupClass.php b/lib/setup/SetupClass.php
index b96b186b7b2d67eeb1ba980606a27e3bc46499d1..dda491603c3e673576f35ab0e03802874127ee82 100755 (executable)
--- a/lib/setup/SetupClass.php
+++ b/lib/setup/SetupClass.php
@@ -2,20 +2,22 @@
 
 namespace Nominatim\Setup;
 
 
 namespace Nominatim\Setup;
 
-require_once(CONST_BasePath.'/lib/setup/AddressLevelParser.php');
+require_once(CONST_LibDir.'/Shell.php');
 
 class SetupFunctions
 {
     protected $iCacheMemory;
     protected $iInstances;
 
 class SetupFunctions
 {
     protected $iCacheMemory;
     protected $iInstances;
-    protected $sModulePath;
     protected $aDSNInfo;
     protected $aDSNInfo;
+    protected $bQuiet;
     protected $bVerbose;
     protected $sIgnoreErrors;
     protected $bEnableDiffUpdates;
     protected $bEnableDebugStatements;
     protected $bNoPartitions;
     protected $bVerbose;
     protected $sIgnoreErrors;
     protected $bEnableDiffUpdates;
     protected $bEnableDebugStatements;
     protected $bNoPartitions;
+    protected $bDrop;
     protected $oDB = null;
     protected $oDB = null;
+    protected $oNominatimCmd;
 
     public function __construct(array $aCMDResult)
     {
 
     public function __construct(array $aCMDResult)
     {
@@ -31,7 +33,7 @@ class SetupFunctions
 
         if (isset($aCMDResult['osm2pgsql-cache'])) {
             $this->iCacheMemory = $aCMDResult['osm2pgsql-cache'];
 
         if (isset($aCMDResult['osm2pgsql-cache'])) {
             $this->iCacheMemory = $aCMDResult['osm2pgsql-cache'];
-        } elseif (!is_null(CONST_Osm2pgsql_Flatnode_File)) {
+        } elseif (getSetting('FLATNODE_FILE')) {
             // When flatnode files are enabled then disable cache per default.
             $this->iCacheMemory = 0;
         } else {
             // When flatnode files are enabled then disable cache per default.
             $this->iCacheMemory = 0;
         } else {
@@ -39,16 +41,14 @@ class SetupFunctions
             $this->iCacheMemory = getCacheMemoryMB();
         }
 
             $this->iCacheMemory = getCacheMemoryMB();
         }
 
-        $this->sModulePath = CONST_Database_Module_Path;
-        info('module path: ' . $this->sModulePath);
-
         // parse database string
         // parse database string
-        $this->aDSNInfo = \Nominatim\DB::parseDSN(CONST_Database_DSN);
+        $this->aDSNInfo = \Nominatim\DB::parseDSN(getSetting('DATABASE_DSN'));
         if (!isset($this->aDSNInfo['port'])) {
             $this->aDSNInfo['port'] = 5432;
         }
 
         // setting member variables based on command line options stored in $aCMDResult
         if (!isset($this->aDSNInfo['port'])) {
             $this->aDSNInfo['port'] = 5432;
         }
 
         // setting member variables based on command line options stored in $aCMDResult
+        $this->bQuiet = isset($aCMDResult['quiet']) && $aCMDResult['quiet'];
         $this->bVerbose = $aCMDResult['verbose'];
 
         //setting default values which are not set by the update.php array
         $this->bVerbose = $aCMDResult['verbose'];
 
         //setting default values which are not set by the update.php array
@@ -72,6 +72,16 @@ class SetupFunctions
         } else {
             $this->bEnableDiffUpdates = false;
         }
         } else {
             $this->bEnableDiffUpdates = false;
         }
+
+        $this->bDrop = isset($aCMDResult['drop']) && $aCMDResult['drop'];
+
+        $this->oNominatimCmd = new \Nominatim\Shell(getSetting('NOMINATIM_TOOL'));
+        if ($this->bQuiet) {
+            $this->oNominatimCmd->addParams('--quiet');
+        }
+        if ($this->bVerbose) {
+            $this->oNominatimCmd->addParams('--verbose');
+        }
     }
 
     public function createDB()
     }
 
     public function createDB()
@@ -79,36 +89,34 @@ class SetupFunctions
         info('Create DB');
         $oDB = new \Nominatim\DB;
 
         info('Create DB');
         $oDB = new \Nominatim\DB;
 
-        if ($oDB->databaseExists()) {
-            fail('database already exists ('.CONST_Database_DSN.')');
+        if ($oDB->checkConnection()) {
+            fail('database already exists ('.getSetting('DATABASE_DSN').')');
         }
 
         }
 
-        $sCreateDBCmd = 'createdb -E UTF-8'
-            .' -p '.escapeshellarg($this->aDSNInfo['port'])
-            .' '.escapeshellarg($this->aDSNInfo['database']);
+        $oCmd = (new \Nominatim\Shell('createdb'))
+                ->addParams('-E', 'UTF-8')
+                ->addParams('-p', $this->aDSNInfo['port']);
+
         if (isset($this->aDSNInfo['username'])) {
         if (isset($this->aDSNInfo['username'])) {
-            $sCreateDBCmd .= ' -U '.escapeshellarg($this->aDSNInfo['username']);
+            $oCmd->addParams('-U', $this->aDSNInfo['username']);
+        }
+        if (isset($this->aDSNInfo['password'])) {
+            $oCmd->addEnvPair('PGPASSWORD', $this->aDSNInfo['password']);
         }
         }
-
         if (isset($this->aDSNInfo['hostspec'])) {
         if (isset($this->aDSNInfo['hostspec'])) {
-            $sCreateDBCmd .= ' -h '.escapeshellarg($this->aDSNInfo['hostspec']);
+            $oCmd->addParams('-h', $this->aDSNInfo['hostspec']);
         }
         }
+        $oCmd->addParams($this->aDSNInfo['database']);
 
 
-        $result = $this->runWithPgEnv($sCreateDBCmd);
-        if ($result != 0) fail('Error executing external command: '.$sCreateDBCmd);
-    }
-
-    public function connect()
-    {
-        $this->oDB = new \Nominatim\DB();
-        $this->oDB->connect();
+        $result = $oCmd->run();
+        if ($result != 0) fail('Error executing external command: '.$oCmd->escapedCmd());
     }
 
     public function setupDB()
     {
         info('Setup DB');
 
     }
 
     public function setupDB()
     {
         info('Setup DB');
 
-        $fPostgresVersion = $this->oDB->getPostgresVersion();
+        $fPostgresVersion = $this->db()->getPostgresVersion();
         echo 'Postgres version found: '.$fPostgresVersion."\n";
 
         if ($fPostgresVersion < 9.03) {
         echo 'Postgres version found: '.$fPostgresVersion."\n";
 
         if ($fPostgresVersion < 9.03) {
@@ -118,7 +126,7 @@ class SetupFunctions
         $this->pgsqlRunScript('CREATE EXTENSION IF NOT EXISTS hstore');
         $this->pgsqlRunScript('CREATE EXTENSION IF NOT EXISTS postgis');
 
         $this->pgsqlRunScript('CREATE EXTENSION IF NOT EXISTS hstore');
         $this->pgsqlRunScript('CREATE EXTENSION IF NOT EXISTS postgis');
 
-        $fPostgisVersion = $this->oDB->getPostgisVersion();
+        $fPostgisVersion = $this->db()->getPostgisVersion();
         echo 'Postgis version found: '.$fPostgisVersion."\n";
 
         if ($fPostgisVersion < 2.2) {
         echo 'Postgis version found: '.$fPostgisVersion."\n";
 
         if ($fPostgisVersion < 2.2) {
@@ -126,34 +134,56 @@ class SetupFunctions
             exit(1);
         }
 
             exit(1);
         }
 
-        $i = $this->oDB->getOne("select count(*) from pg_user where usename = '".CONST_Database_Web_User."'");
+        $sPgUser = getSetting('DATABASE_WEBUSER');
+        $i = $this->db()->getOne("select count(*) from pg_user where usename = '$sPgUser'");
         if ($i == 0) {
         if ($i == 0) {
-            echo "\nERROR: Web user '".CONST_Database_Web_User."' does not exist. Create it with:\n";
-            echo "\n          createuser ".CONST_Database_Web_User."\n\n";
+            echo "\nERROR: Web user '".$sPgUser."' does not exist. Create it with:\n";
+            echo "\n          createuser ".$sPgUser."\n\n";
             exit(1);
         }
 
             exit(1);
         }
 
+        if (!getSetting('DATABASE_MODULE_PATH')) {
+            // If no custom module path is set then copy the module into the
+            // project directory, but only if it is not the same file already
+            // (aka we are running from the build dir).
+            $sDest = CONST_InstallDir.'/module';
+            if ($sDest != CONST_Default_ModulePath) {
+                if (!file_exists($sDest)) {
+                    mkdir($sDest);
+                }
+                if (!copy(CONST_Default_ModulePath.'/nominatim.so', $sDest.'/nominatim.so')) {
+                    echo "Failed to copy database module to $sDest.";
+                    exit(1);
+                }
+                chmod($sDest.'/nominatim.so', 0755);
+                info("Database module installed at $sDest.");
+            } else {
+                info('Running from build directory. Leaving database module as is.');
+            }
+        } else {
+            info('Using database module from DATABASE_MODULE_PATH ('.getSetting('DATABASE_MODULE_PATH').').');
+        }
         // Try accessing the C module, so we know early if something is wrong
         // Try accessing the C module, so we know early if something is wrong
-        checkModulePresence(); // raises exception on failure
+        $this->checkModulePresence(); // raises exception on failure
 
 
-        if (!file_exists(CONST_ExtraDataPath.'/country_osm_grid.sql.gz')) {
+        if (!file_exists(CONST_DataDir.'/data/country_osm_grid.sql.gz')) {
             echo 'Error: you need to download the country_osm_grid first:';
             echo 'Error: you need to download the country_osm_grid first:';
-            echo "\n    wget -O ".CONST_ExtraDataPath."/country_osm_grid.sql.gz https://www.nominatim.org/data/country_grid.sql.gz\n";
+            echo "\n    wget -O ".CONST_DataDir."/data/country_osm_grid.sql.gz https://www.nominatim.org/data/country_grid.sql.gz\n";
             exit(1);
         }
             exit(1);
         }
-        $this->pgsqlRunScriptFile(CONST_BasePath.'/data/country_name.sql');
-        $this->pgsqlRunScriptFile(CONST_ExtraDataPath.'/country_osm_grid.sql.gz');
-        $this->pgsqlRunScriptFile(CONST_BasePath.'/data/gb_postcode_table.sql');
-        $this->pgsqlRunScriptFile(CONST_BasePath.'/data/us_postcode_table.sql');
+        $this->pgsqlRunScriptFile(CONST_DataDir.'/data/country_name.sql');
+        $this->pgsqlRunScriptFile(CONST_DataDir.'/data/country_osm_grid.sql.gz');
+        $this->pgsqlRunScriptFile(CONST_DataDir.'/data/gb_postcode_table.sql');
+        $this->pgsqlRunScriptFile(CONST_DataDir.'/data/us_postcode_table.sql');
 
 
-        $sPostcodeFilename = CONST_BasePath.'/data/gb_postcode_data.sql.gz';
+        $sPostcodeFilename = CONST_InstallDir.'/gb_postcode_data.sql.gz';
         if (file_exists($sPostcodeFilename)) {
             $this->pgsqlRunScriptFile($sPostcodeFilename);
         } else {
             warn('optional external GB postcode table file ('.$sPostcodeFilename.') not found. Skipping.');
         }
 
         if (file_exists($sPostcodeFilename)) {
             $this->pgsqlRunScriptFile($sPostcodeFilename);
         } else {
             warn('optional external GB postcode table file ('.$sPostcodeFilename.') not found. Skipping.');
         }
 
-        $sPostcodeFilename = CONST_BasePath.'/data/us_postcode_data.sql.gz';
+        $sPostcodeFilename = CONST_InstallDir.'/us_postcode_data.sql.gz';
         if (file_exists($sPostcodeFilename)) {
             $this->pgsqlRunScriptFile($sPostcodeFilename);
         } else {
         if (file_exists($sPostcodeFilename)) {
             $this->pgsqlRunScriptFile($sPostcodeFilename);
         } else {
@@ -169,43 +199,60 @@ class SetupFunctions
     {
         info('Import data');
 
     {
         info('Import data');
 
-        $osm2pgsql = CONST_Osm2pgsql_Binary;
-        if (!file_exists($osm2pgsql)) {
-            echo "Check CONST_Osm2pgsql_Binary in your local settings file.\n";
+        if (!file_exists(getOsm2pgsqlBinary())) {
+            echo "Check NOMINATIM_OSM2PGSQL_BINARY in your local .env file.\n";
             echo "Normally you should not need to set this manually.\n";
             echo "Normally you should not need to set this manually.\n";
-            fail("osm2pgsql not found in '$osm2pgsql'");
+            fail("osm2pgsql not found in '".getOsm2pgsqlBinary()."'");
         }
 
         }
 
-        $osm2pgsql .= ' -S '.escapeshellarg(CONST_Import_Style);
+        $oCmd = new \Nominatim\Shell(getOsm2pgsqlBinary());
+        $oCmd->addParams('--style', getImportStyle());
 
 
-        if (!is_null(CONST_Osm2pgsql_Flatnode_File) && CONST_Osm2pgsql_Flatnode_File) {
-            $osm2pgsql .= ' --flat-nodes '.escapeshellarg(CONST_Osm2pgsql_Flatnode_File);
+        if (getSetting('FLATNODE_FILE')) {
+            $oCmd->addParams('--flat-nodes', getSetting('FLATNODE_FILE'));
+        }
+        if (getSetting('TABLESPACE_OSM_DATA')) {
+            $oCmd->addParams('--tablespace-slim-data', getSetting('TABLESPACE_OSM_DATA'));
+        }
+        if (getSetting('TABLESPACE_OSM_INDEX')) {
+            $oCmd->addParams('--tablespace-slim-index', getSetting('TABLESPACE_OSM_INDEX'));
         }
         }
+        if (getSetting('TABLESPACE_PLACE_DATA')) {
+            $oCmd->addParams('--tablespace-main-data', getSetting('TABLESPACE_PLACE_DATA'));
+        }
+        if (getSetting('TABLESPACE_PLACE_INDEX')) {
+            $oCmd->addParams('--tablespace-main-index', getSetting('TABLESPACE_PLACE_INDEX'));
+        }
+        $oCmd->addParams('--latlong', '--slim', '--create');
+        $oCmd->addParams('--output', 'gazetteer');
+        $oCmd->addParams('--hstore');
+        $oCmd->addParams('--number-processes', 1);
+        $oCmd->addParams('--with-forward-dependencies', 'false');
+        $oCmd->addParams('--log-progress', 'true');
+        $oCmd->addParams('--cache', $this->iCacheMemory);
+        $oCmd->addParams('--port', $this->aDSNInfo['port']);
 
 
-        if (CONST_Tablespace_Osm2pgsql_Data)
-            $osm2pgsql .= ' --tablespace-slim-data '.escapeshellarg(CONST_Tablespace_Osm2pgsql_Data);
-        if (CONST_Tablespace_Osm2pgsql_Index)
-            $osm2pgsql .= ' --tablespace-slim-index '.escapeshellarg(CONST_Tablespace_Osm2pgsql_Index);
-        if (CONST_Tablespace_Place_Data)
-            $osm2pgsql .= ' --tablespace-main-data '.escapeshellarg(CONST_Tablespace_Place_Data);
-        if (CONST_Tablespace_Place_Index)
-            $osm2pgsql .= ' --tablespace-main-index '.escapeshellarg(CONST_Tablespace_Place_Index);
-        $osm2pgsql .= ' -lsc -O gazetteer --hstore --number-processes 1';
-        $osm2pgsql .= ' -C '.escapeshellarg($this->iCacheMemory);
-        $osm2pgsql .= ' -P '.escapeshellarg($this->aDSNInfo['port']);
         if (isset($this->aDSNInfo['username'])) {
         if (isset($this->aDSNInfo['username'])) {
-            $osm2pgsql .= ' -U '.escapeshellarg($this->aDSNInfo['username']);
+            $oCmd->addParams('--username', $this->aDSNInfo['username']);
+        }
+        if (isset($this->aDSNInfo['password'])) {
+            $oCmd->addEnvPair('PGPASSWORD', $this->aDSNInfo['password']);
         }
         if (isset($this->aDSNInfo['hostspec'])) {
         }
         if (isset($this->aDSNInfo['hostspec'])) {
-            $osm2pgsql .= ' -H '.escapeshellarg($this->aDSNInfo['hostspec']);
+            $oCmd->addParams('--host', $this->aDSNInfo['hostspec']);
         }
         }
-        $osm2pgsql .= ' -d '.escapeshellarg($this->aDSNInfo['database']).' '.escapeshellarg($sOSMFile);
-
-        $this->runWithPgEnv($osm2pgsql);
+        $oCmd->addParams('--database', $this->aDSNInfo['database']);
+        $oCmd->addParams($sOSMFile);
+        $oCmd->run();
 
 
-        if (!$this->sIgnoreErrors && !$this->oDB->getRow('select * from place limit 1')) {
+        if (!$this->sIgnoreErrors && !$this->db()->getRow('select * from place limit 1')) {
             fail('No Data');
         }
             fail('No Data');
         }
+
+        if ($this->bDrop) {
+            $this->dropTable('planet_osm_nodes');
+            $this->removeFlatnodeFile();
+        }
     }
 
     public function createFunctions()
     }
 
     public function createFunctions()
@@ -213,7 +260,7 @@ class SetupFunctions
         info('Create Functions');
 
         // Try accessing the C module, so we know early if something is wrong
         info('Create Functions');
 
         // Try accessing the C module, so we know early if something is wrong
-        checkModulePresence(); // raises exception on failure
+        $this->checkModulePresence(); // raises exception on failure
 
         $this->createSqlFunctions();
     }
 
         $this->createSqlFunctions();
     }
@@ -222,7 +269,7 @@ class SetupFunctions
     {
         info('Create Tables');
 
     {
         info('Create Tables');
 
-        $sTemplate = file_get_contents(CONST_BasePath.'/sql/tables.sql');
+        $sTemplate = file_get_contents(CONST_DataDir.'/sql/tables.sql');
         $sTemplate = $this->replaceSqlPatterns($sTemplate);
 
         $this->pgsqlRunScript($sTemplate, false);
         $sTemplate = $this->replaceSqlPatterns($sTemplate);
 
         $this->pgsqlRunScript($sTemplate, false);
@@ -231,15 +278,24 @@ class SetupFunctions
             $this->dropTable('search_name');
         }
 
             $this->dropTable('search_name');
         }
 
-        $oAlParser = new AddressLevelParser(CONST_Address_Level_Config);
-        $oAlParser->createTable($this->oDB, 'address_levels');
+        (clone($this->oNominatimCmd))->addParams('refresh', '--address-levels')->run();
+    }
+
+    public function createTableTriggers()
+    {
+        info('Create Tables');
+
+        $sTemplate = file_get_contents(CONST_DataDir.'/sql/table-triggers.sql');
+        $sTemplate = $this->replaceSqlPatterns($sTemplate);
+
+        $this->pgsqlRunScript($sTemplate, false);
     }
 
     public function createPartitionTables()
     {
         info('Create Partition Tables');
 
     }
 
     public function createPartitionTables()
     {
         info('Create Partition Tables');
 
-        $sTemplate = file_get_contents(CONST_BasePath.'/sql/partition-tables.src.sql');
+        $sTemplate = file_get_contents(CONST_DataDir.'/sql/partition-tables.src.sql');
         $sTemplate = $this->replaceSqlPatterns($sTemplate);
 
         $this->pgsqlRunPartitionScript($sTemplate);
         $sTemplate = $this->replaceSqlPatterns($sTemplate);
 
         $this->pgsqlRunPartitionScript($sTemplate);
@@ -248,14 +304,13 @@ class SetupFunctions
     public function createPartitionFunctions()
     {
         info('Create Partition Functions');
     public function createPartitionFunctions()
     {
         info('Create Partition Functions');
-
-        $sTemplate = file_get_contents(CONST_BasePath.'/sql/partition-functions.src.sql');
-        $this->pgsqlRunPartitionScript($sTemplate);
+        $this->createSqlFunctions(); // also create partition functions
     }
 
     public function importWikipediaArticles()
     {
     }
 
     public function importWikipediaArticles()
     {
-        $sWikiArticlesFile = CONST_Wikipedia_Data_Path.'/wikimedia-importance.sql.gz';
+        $sWikiArticlePath = getSetting('WIKIPEDIA_DATA_PATH', CONST_InstallDir);
+        $sWikiArticlesFile = $sWikiArticlePath.'/wikimedia-importance.sql.gz';
         if (file_exists($sWikiArticlesFile)) {
             info('Importing wikipedia articles and redirects');
             $this->dropTable('wikipedia_article');
         if (file_exists($sWikiArticlesFile)) {
             info('Importing wikipedia articles and redirects');
             $this->dropTable('wikipedia_article');
@@ -270,46 +325,48 @@ class SetupFunctions
     {
         info('Drop old Data');
 
     {
         info('Drop old Data');
 
-        $this->oDB->exec('TRUNCATE word');
+        $oDB = $this->db();
+
+        $oDB->exec('TRUNCATE word');
         echo '.';
         echo '.';
-        $this->oDB->exec('TRUNCATE placex');
+        $oDB->exec('TRUNCATE placex');
         echo '.';
         echo '.';
-        $this->oDB->exec('TRUNCATE location_property_osmline');
+        $oDB->exec('TRUNCATE location_property_osmline');
         echo '.';
         echo '.';
-        $this->oDB->exec('TRUNCATE place_addressline');
+        $oDB->exec('TRUNCATE place_addressline');
         echo '.';
         echo '.';
-        $this->oDB->exec('TRUNCATE location_area');
+        $oDB->exec('TRUNCATE location_area');
         echo '.';
         if (!$this->dbReverseOnly()) {
         echo '.';
         if (!$this->dbReverseOnly()) {
-            $this->oDB->exec('TRUNCATE search_name');
+            $oDB->exec('TRUNCATE search_name');
             echo '.';
         }
             echo '.';
         }
-        $this->oDB->exec('TRUNCATE search_name_blank');
+        $oDB->exec('TRUNCATE search_name_blank');
         echo '.';
         echo '.';
-        $this->oDB->exec('DROP SEQUENCE seq_place');
+        $oDB->exec('DROP SEQUENCE seq_place');
         echo '.';
         echo '.';
-        $this->oDB->exec('CREATE SEQUENCE seq_place start 100000');
+        $oDB->exec('CREATE SEQUENCE seq_place start 100000');
         echo '.';
 
         $sSQL = 'select distinct partition from country_name';
         echo '.';
 
         $sSQL = 'select distinct partition from country_name';
-        $aPartitions = $this->oDB->getCol($sSQL);
+        $aPartitions = $oDB->getCol($sSQL);
 
         if (!$this->bNoPartitions) $aPartitions[] = 0;
         foreach ($aPartitions as $sPartition) {
 
         if (!$this->bNoPartitions) $aPartitions[] = 0;
         foreach ($aPartitions as $sPartition) {
-            $this->oDB->exec('TRUNCATE location_road_'.$sPartition);
+            $oDB->exec('TRUNCATE location_road_'.$sPartition);
             echo '.';
         }
 
         // used by getorcreate_word_id to ignore frequent partial words
         $sSQL = 'CREATE OR REPLACE FUNCTION get_maxwordfreq() RETURNS integer AS ';
             echo '.';
         }
 
         // used by getorcreate_word_id to ignore frequent partial words
         $sSQL = 'CREATE OR REPLACE FUNCTION get_maxwordfreq() RETURNS integer AS ';
-        $sSQL .= '$$ SELECT '.CONST_Max_Word_Frequency.' as maxwordfreq; $$ LANGUAGE SQL IMMUTABLE';
-        $this->oDB->exec($sSQL);
+        $sSQL .= '$$ SELECT '.getSetting('MAX_WORD_FREQUENCY').' as maxwordfreq; $$ LANGUAGE SQL IMMUTABLE';
+        $oDB->exec($sSQL);
         echo ".\n";
 
         // pre-create the word list
         if (!$bDisableTokenPrecalc) {
             info('Loading word list');
         echo ".\n";
 
         // pre-create the word list
         if (!$bDisableTokenPrecalc) {
             info('Loading word list');
-            $this->pgsqlRunScriptFile(CONST_BasePath.'/data/words.sql');
+            $this->pgsqlRunScriptFile(CONST_DataDir.'/data/words.sql');
         }
 
         info('Load Data');
         }
 
         info('Load Data');
@@ -319,7 +376,7 @@ class SetupFunctions
         $iLoadThreads = max(1, $this->iInstances - 1);
         for ($i = 0; $i < $iLoadThreads; $i++) {
             // https://secure.php.net/manual/en/function.pg-connect.php
         $iLoadThreads = max(1, $this->iInstances - 1);
         for ($i = 0; $i < $iLoadThreads; $i++) {
             // https://secure.php.net/manual/en/function.pg-connect.php
-            $DSN = CONST_Database_DSN;
+            $DSN = getSetting('DATABASE_DSN');
             $DSN = preg_replace('/^pgsql:/', '', $DSN);
             $DSN = preg_replace('/;/', ' ', $DSN);
             $aDBInstances[$i] = pg_connect($DSN, PGSQL_CONNECT_FORCE_NEW);
             $DSN = preg_replace('/^pgsql:/', '', $DSN);
             $DSN = preg_replace('/;/', ' ', $DSN);
             $aDBInstances[$i] = pg_connect($DSN, PGSQL_CONNECT_FORCE_NEW);
@@ -339,7 +396,7 @@ class SetupFunctions
 
         // last thread for interpolation lines
         // https://secure.php.net/manual/en/function.pg-connect.php
 
         // last thread for interpolation lines
         // https://secure.php.net/manual/en/function.pg-connect.php
-        $DSN = CONST_Database_DSN;
+        $DSN = getSetting('DATABASE_DSN');
         $DSN = preg_replace('/^pgsql:/', '', $DSN);
         $DSN = preg_replace('/;/', ' ', $DSN);
         $aDBInstances[$iLoadThreads] = pg_connect($DSN, PGSQL_CONNECT_FORCE_NEW);
         $DSN = preg_replace('/^pgsql:/', '', $DSN);
         $DSN = preg_replace('/;/', ' ', $DSN);
         $aDBInstances[$iLoadThreads] = pg_connect($DSN, PGSQL_CONNECT_FORCE_NEW);
@@ -380,26 +437,28 @@ class SetupFunctions
         info('Reanalysing database');
         $this->pgsqlRunScript('ANALYSE');
 
         info('Reanalysing database');
         $this->pgsqlRunScript('ANALYSE');
 
-        $sDatabaseDate = getDatabaseDate($this->oDB);
-        $this->oDB->exec('TRUNCATE import_status');
+        $sDatabaseDate = getDatabaseDate($oDB);
+        $oDB->exec('TRUNCATE import_status');
         if (!$sDatabaseDate) {
             warn('could not determine database date.');
         } else {
             $sSQL = "INSERT INTO import_status (lastimportdate) VALUES('".$sDatabaseDate."')";
         if (!$sDatabaseDate) {
             warn('could not determine database date.');
         } else {
             $sSQL = "INSERT INTO import_status (lastimportdate) VALUES('".$sDatabaseDate."')";
-            $this->oDB->exec($sSQL);
+            $oDB->exec($sSQL);
             echo "Latest data imported from $sDatabaseDate.\n";
         }
     }
 
             echo "Latest data imported from $sDatabaseDate.\n";
         }
     }
 
-    public function importTigerData()
+    public function importTigerData($sTigerPath)
     {
         info('Import Tiger data');
 
     {
         info('Import Tiger data');
 
-        $aFilenames = glob(CONST_Tiger_Data_Path.'/*.sql');
-        info('Found '.count($aFilenames).' SQL files in path '.CONST_Tiger_Data_Path);
-        if (empty($aFilenames)) return;
-
-        $sTemplate = file_get_contents(CONST_BasePath.'/sql/tiger_import_start.sql');
+        $aFilenames = glob($sTigerPath.'/*.sql');
+        info('Found '.count($aFilenames).' SQL files in path '.$sTigerPath);
+        if (empty($aFilenames)) {
+            warn('Tiger data import selected but no files found in path '.$sTigerPath);
+            return;
+        }
+        $sTemplate = file_get_contents(CONST_DataDir.'/sql/tiger_import_start.sql');
         $sTemplate = $this->replaceSqlPatterns($sTemplate);
 
         $this->pgsqlRunScript($sTemplate, false);
         $sTemplate = $this->replaceSqlPatterns($sTemplate);
 
         $this->pgsqlRunScript($sTemplate, false);
@@ -407,7 +466,7 @@ class SetupFunctions
         $aDBInstances = array();
         for ($i = 0; $i < $this->iInstances; $i++) {
             // https://secure.php.net/manual/en/function.pg-connect.php
         $aDBInstances = array();
         for ($i = 0; $i < $this->iInstances; $i++) {
             // https://secure.php.net/manual/en/function.pg-connect.php
-            $DSN = CONST_Database_DSN;
+            $DSN = getSetting('DATABASE_DSN');
             $DSN = preg_replace('/^pgsql:/', '', $DSN);
             $DSN = preg_replace('/;/', ' ', $DSN);
             $aDBInstances[$i] = pg_connect($DSN, PGSQL_CONNECT_FORCE_NEW | PGSQL_CONNECT_ASYNC);
             $DSN = preg_replace('/^pgsql:/', '', $DSN);
             $DSN = preg_replace('/;/', ' ', $DSN);
             $aDBInstances[$i] = pg_connect($DSN, PGSQL_CONNECT_FORCE_NEW | PGSQL_CONNECT_ASYNC);
@@ -453,7 +512,7 @@ class SetupFunctions
         }
 
         info('Creating indexes on Tiger data');
         }
 
         info('Creating indexes on Tiger data');
-        $sTemplate = file_get_contents(CONST_BasePath.'/sql/tiger_import_finish.sql');
+        $sTemplate = file_get_contents(CONST_DataDir.'/sql/tiger_import_finish.sql');
         $sTemplate = $this->replaceSqlPatterns($sTemplate);
 
         $this->pgsqlRunScript($sTemplate, false);
         $sTemplate = $this->replaceSqlPatterns($sTemplate);
 
         $this->pgsqlRunScript($sTemplate, false);
@@ -462,7 +521,7 @@ class SetupFunctions
     public function calculatePostcodes($bCMDResultAll)
     {
         info('Calculate Postcodes');
     public function calculatePostcodes($bCMDResultAll)
     {
         info('Calculate Postcodes');
-        $this->oDB->exec('TRUNCATE location_postcode');
+        $this->db()->exec('TRUNCATE location_postcode');
 
         $sSQL  = 'INSERT INTO location_postcode';
         $sSQL .= ' (place_id, indexed_status, country_code, postcode, geometry) ';
 
         $sSQL  = 'INSERT INTO location_postcode';
         $sSQL .= ' (place_id, indexed_status, country_code, postcode, geometry) ';
@@ -473,7 +532,7 @@ class SetupFunctions
         $sSQL .= " WHERE address ? 'postcode' AND address->'postcode' NOT SIMILAR TO '%(,|;)%'";
         $sSQL .= '       AND geometry IS NOT null';
         $sSQL .= ' GROUP BY country_code, pc';
         $sSQL .= " WHERE address ? 'postcode' AND address->'postcode' NOT SIMILAR TO '%(,|;)%'";
         $sSQL .= '       AND geometry IS NOT null';
         $sSQL .= ' GROUP BY country_code, pc';
-        $this->oDB->exec($sSQL);
+        $this->db()->exec($sSQL);
 
         // only add postcodes that are not yet available in OSM
         $sSQL  = 'INSERT INTO location_postcode';
 
         // only add postcodes that are not yet available in OSM
         $sSQL  = 'INSERT INTO location_postcode';
@@ -483,7 +542,7 @@ class SetupFunctions
         $sSQL .= '  FROM us_postcode WHERE postcode NOT IN';
         $sSQL .= '        (SELECT postcode FROM location_postcode';
         $sSQL .= "          WHERE country_code = 'us')";
         $sSQL .= '  FROM us_postcode WHERE postcode NOT IN';
         $sSQL .= '        (SELECT postcode FROM location_postcode';
         $sSQL .= "          WHERE country_code = 'us')";
-        $this->oDB->exec($sSQL);
+        $this->db()->exec($sSQL);
 
         // add missing postcodes for GB (if available)
         $sSQL  = 'INSERT INTO location_postcode';
 
         // add missing postcodes for GB (if available)
         $sSQL  = 'INSERT INTO location_postcode';
@@ -492,65 +551,81 @@ class SetupFunctions
         $sSQL .= '  FROM gb_postcode WHERE postcode NOT IN';
         $sSQL .= '           (SELECT postcode FROM location_postcode';
         $sSQL .= "             WHERE country_code = 'gb')";
         $sSQL .= '  FROM gb_postcode WHERE postcode NOT IN';
         $sSQL .= '           (SELECT postcode FROM location_postcode';
         $sSQL .= "             WHERE country_code = 'gb')";
-        $this->oDB->exec($sSQL);
+        $this->db()->exec($sSQL);
 
         if (!$bCMDResultAll) {
             $sSQL = "DELETE FROM word WHERE class='place' and type='postcode'";
             $sSQL .= 'and word NOT IN (SELECT postcode FROM location_postcode)';
 
         if (!$bCMDResultAll) {
             $sSQL = "DELETE FROM word WHERE class='place' and type='postcode'";
             $sSQL .= 'and word NOT IN (SELECT postcode FROM location_postcode)';
-            $this->oDB->exec($sSQL);
+            $this->db()->exec($sSQL);
         }
 
         $sSQL = 'SELECT count(getorcreate_postcode_id(v)) FROM ';
         $sSQL .= '(SELECT distinct(postcode) as v FROM location_postcode) p';
         }
 
         $sSQL = 'SELECT count(getorcreate_postcode_id(v)) FROM ';
         $sSQL .= '(SELECT distinct(postcode) as v FROM location_postcode) p';
-        $this->oDB->exec($sSQL);
+        $this->db()->exec($sSQL);
     }
 
     public function index($bIndexNoanalyse)
     {
     }
 
     public function index($bIndexNoanalyse)
     {
-        $sOutputFile = '';
-        $sBaseCmd = CONST_InstallPath.'/nominatim/nominatim -i'
-            .' -d '.escapeshellarg($this->aDSNInfo['database'])
-            .' -P '.escapeshellarg($this->aDSNInfo['port'])
-            .' -t '.escapeshellarg($this->iInstances.$sOutputFile);
-        if (isset($this->aDSNInfo['hostspec'])) {
-            $sBaseCmd .= ' -H '.escapeshellarg($this->aDSNInfo['hostspec']);
-        }
-        if (isset($this->aDSNInfo['username'])) {
-            $sBaseCmd .= ' -U '.escapeshellarg($this->aDSNInfo['username']);
-        }
+        $this->checkModulePresence(); // raises exception on failure
+
+        $oBaseCmd = (clone $this->oNominatimCmd)->addParams('index');
 
         info('Index ranks 0 - 4');
 
         info('Index ranks 0 - 4');
-        $iStatus = $this->runWithPgEnv($sBaseCmd.' -R 4');
+        $oCmd = (clone $oBaseCmd)->addParams('--maxrank', 4);
+
+        $iStatus = $oCmd->run();
         if ($iStatus != 0) {
             fail('error status ' . $iStatus . ' running nominatim!');
         }
         if (!$bIndexNoanalyse) $this->pgsqlRunScript('ANALYSE');
 
         if ($iStatus != 0) {
             fail('error status ' . $iStatus . ' running nominatim!');
         }
         if (!$bIndexNoanalyse) $this->pgsqlRunScript('ANALYSE');
 
+        info('Index administrative boundaries');
+        $oCmd = (clone $oBaseCmd)->addParams('--boundaries-only');
+        $iStatus = $oCmd->run();
+        if ($iStatus != 0) {
+            fail('error status ' . $iStatus . ' running nominatim!');
+        }
+
         info('Index ranks 5 - 25');
         info('Index ranks 5 - 25');
-        $iStatus = $this->runWithPgEnv($sBaseCmd.' -r 5 -R 25');
+        $oCmd = (clone $oBaseCmd)->addParams('--no-boundaries', '--minrank', 5, '--maxrank', 25);
+        $iStatus = $oCmd->run();
         if ($iStatus != 0) {
             fail('error status ' . $iStatus . ' running nominatim!');
         }
         if ($iStatus != 0) {
             fail('error status ' . $iStatus . ' running nominatim!');
         }
+
         if (!$bIndexNoanalyse) $this->pgsqlRunScript('ANALYSE');
 
         info('Index ranks 26 - 30');
         if (!$bIndexNoanalyse) $this->pgsqlRunScript('ANALYSE');
 
         info('Index ranks 26 - 30');
-        $iStatus = $this->runWithPgEnv($sBaseCmd.' -r 26');
+        $oCmd = (clone $oBaseCmd)->addParams('--no-boundaries', '--minrank', 26);
+        $iStatus = $oCmd->run();
         if ($iStatus != 0) {
             fail('error status ' . $iStatus . ' running nominatim!');
         }
 
         info('Index postcodes');
         $sSQL = 'UPDATE location_postcode SET indexed_status = 0';
         if ($iStatus != 0) {
             fail('error status ' . $iStatus . ' running nominatim!');
         }
 
         info('Index postcodes');
         $sSQL = 'UPDATE location_postcode SET indexed_status = 0';
-        $this->oDB->exec($sSQL);
+        $this->db()->exec($sSQL);
     }
 
     public function createSearchIndices()
     {
         info('Create Search indices');
 
     }
 
     public function createSearchIndices()
     {
         info('Create Search indices');
 
-        $sTemplate = file_get_contents(CONST_BasePath.'/sql/indices.src.sql');
+        $sSQL = 'SELECT relname FROM pg_class, pg_index ';
+        $sSQL .= 'WHERE pg_index.indisvalid = false AND pg_index.indexrelid = pg_class.oid';
+        $aInvalidIndices = $this->db()->getCol($sSQL);
+
+        foreach ($aInvalidIndices as $sIndexName) {
+            info("Cleaning up invalid index $sIndexName");
+            $this->db()->exec("DROP INDEX $sIndexName;");
+        }
+
+        $sTemplate = file_get_contents(CONST_DataDir.'/sql/indices.src.sql');
+        if (!$this->bDrop) {
+            $sTemplate .= file_get_contents(CONST_DataDir.'/sql/indices_updates.src.sql');
+        }
         if (!$this->dbReverseOnly()) {
         if (!$this->dbReverseOnly()) {
-            $sTemplate .= file_get_contents(CONST_BasePath.'/sql/indices_search.src.sql');
+            $sTemplate .= file_get_contents(CONST_DataDir.'/sql/indices_search.src.sql');
         }
         $sTemplate = $this->replaceSqlPatterns($sTemplate);
 
         }
         $sTemplate = $this->replaceSqlPatterns($sTemplate);
 
@@ -567,10 +642,11 @@ class SetupFunctions
         $this->pgsqlRunScript("select count(*) from (select getorcreate_country(make_standard_name(name->'name'), country_code) from country_name where name ? 'name') as x");
         $sSQL = 'select count(*) from (select getorcreate_country(make_standard_name(v),'
             .'country_code) from (select country_code, skeys(name) as k, svals(name) as v from country_name) x where k ';
         $this->pgsqlRunScript("select count(*) from (select getorcreate_country(make_standard_name(name->'name'), country_code) from country_name where name ? 'name') as x");
         $sSQL = 'select count(*) from (select getorcreate_country(make_standard_name(v),'
             .'country_code) from (select country_code, skeys(name) as k, svals(name) as v from country_name) x where k ';
-        if (CONST_Languages) {
+        $sLanguages = getSetting('LANGUAGES');
+        if ($sLanguages) {
             $sSQL .= 'in ';
             $sDelim = '(';
             $sSQL .= 'in ';
             $sDelim = '(';
-            foreach (explode(',', CONST_Languages) as $sLang) {
+            foreach (explode(',', $sLanguages) as $sLang) {
                 $sSQL .= $sDelim."'name:$sLang'";
                 $sDelim = ',';
             }
                 $sSQL .= $sDelim."'name:$sLang'";
                 $sDelim = ',';
             }
@@ -612,7 +688,7 @@ class SetupFunctions
                        );
 
         $aDropTables = array();
                        );
 
         $aDropTables = array();
-        $aHaveTables = $this->oDB->getCol("SELECT tablename FROM pg_tables WHERE schemaname='public'");
+        $aHaveTables = $this->db()->getListOfTables();
 
         foreach ($aHaveTables as $sTable) {
             $bFound = false;
 
         foreach ($aHaveTables as $sTable) {
             $bFound = false;
@@ -628,11 +704,87 @@ class SetupFunctions
             $this->dropTable($sDrop);
         }
 
             $this->dropTable($sDrop);
         }
 
-        if (!is_null(CONST_Osm2pgsql_Flatnode_File) && CONST_Osm2pgsql_Flatnode_File) {
-            if (file_exists(CONST_Osm2pgsql_Flatnode_File)) {
-                if ($this->bVerbose) echo 'Deleting '.CONST_Osm2pgsql_Flatnode_File."\n";
-                unlink(CONST_Osm2pgsql_Flatnode_File);
-            }
+        $this->removeFlatnodeFile();
+    }
+
+    /**
+     * Setup the directory for the API scripts.
+     *
+     * @return null
+     */
+    public function setupWebsite()
+    {
+        if (!is_dir(CONST_InstallDir.'/website')) {
+            info('Creating directory for website scripts at: '.CONST_InstallDir.'/website');
+            mkdir(CONST_InstallDir.'/website');
+        }
+
+        $aScripts = array(
+          'deletable.php',
+          'details.php',
+          'lookup.php',
+          'polygons.php',
+          'reverse.php',
+          'search.php',
+          'status.php'
+        );
+
+        foreach ($aScripts as $sScript) {
+            $rFile = fopen(CONST_InstallDir.'/website/'.$sScript, 'w');
+
+            fwrite($rFile, "<?php\n\n");
+            fwrite($rFile, '@define(\'CONST_Debug\', $_GET[\'debug\'] ?? false);'."\n\n");
+
+            fwriteConstDef($rFile, 'LibDir', CONST_LibDir);
+            fwriteConstDef($rFile, 'DataDir', CONST_DataDir);
+            fwriteConstDef($rFile, 'InstallDir', CONST_InstallDir);
+            fwriteConstDef($rFile, 'Database_DSN', getSetting('DATABASE_DSN'));
+            fwriteConstDef($rFile, 'Default_Language', getSetting('DEFAULT_LANGUAGE'));
+            fwriteConstDef($rFile, 'Log_DB', getSettingBool('LOG_DB'));
+            fwriteConstDef($rFile, 'Log_File', getSetting('LOG_FILE'));
+            fwriteConstDef($rFile, 'Max_Word_Frequency', (int)getSetting('MAX_WORD_FREQUENCY'));
+            fwriteConstDef($rFile, 'NoAccessControl', getSettingBool('CORS_NOACCESSCONTROL'));
+            fwriteConstDef($rFile, 'Places_Max_ID_count', (int)getSetting('LOOKUP_MAX_COUNT'));
+            fwriteConstDef($rFile, 'PolygonOutput_MaximumTypes', getSetting('POLYGON_OUTPUT_MAX_TYPES'));
+            fwriteConstDef($rFile, 'Search_BatchMode', getSettingBool('SEARCH_BATCH_MODE'));
+            fwriteConstDef($rFile, 'Search_NameOnlySearchFrequencyThreshold', getSetting('SEARCH_NAME_ONLY_THRESHOLD'));
+            fwriteConstDef($rFile, 'Term_Normalization_Rules', getSetting('TERM_NORMALIZATION'));
+            fwriteConstDef($rFile, 'Use_Aux_Location_data', getSettingBool('USE_AUX_LOCATION_DATA'));
+            fwriteConstDef($rFile, 'Use_US_Tiger_Data', getSettingBool('USE_US_TIGER_DATA'));
+            fwriteConstDef($rFile, 'MapIcon_URL', getSetting('MAPICON_URL'));
+
+            // XXX scripts should go into the library.
+            fwrite($rFile, 'require_once(\''.CONST_DataDir.'/website/'.$sScript."');\n");
+            fclose($rFile);
+
+            chmod(CONST_InstallDir.'/website/'.$sScript, 0755);
+        }
+    }
+
+    /**
+     * Return the connection to the database.
+     *
+     * @return Database object.
+     *
+     * Creates a new connection if none exists yet. Otherwise reuses the
+     * already established connection.
+     */
+    private function db()
+    {
+        if (is_null($this->oDB)) {
+            $this->oDB = new \Nominatim\DB();
+            $this->oDB->connect();
+        }
+
+        return $this->oDB;
+    }
+
+    private function removeFlatnodeFile()
+    {
+        $sFName = getSetting('FLATNODE_FILE');
+        if ($sFName && file_exists($sFName)) {
+            if ($this->bVerbose) echo 'Deleting '.$sFName."\n";
+            unlink($sFName);
         }
     }
 
         }
     }
 
@@ -648,42 +800,24 @@ class SetupFunctions
 
     private function createSqlFunctions()
     {
 
     private function createSqlFunctions()
     {
-        $sBasePath = CONST_BasePath.'/sql/functions/';
-        $sTemplate = file_get_contents($sBasePath.'utils.sql');
-        $sTemplate .= file_get_contents($sBasePath.'normalization.sql');
-        $sTemplate .= file_get_contents($sBasePath.'importance.sql');
-        $sTemplate .= file_get_contents($sBasePath.'address_lookup.sql');
-        $sTemplate .= file_get_contents($sBasePath.'interpolation.sql');
-        $sTemplate .= file_get_contents($sBasePath.'place_triggers.sql');
-        $sTemplate .= file_get_contents($sBasePath.'placex_triggers.sql');
-        $sTemplate .= file_get_contents($sBasePath.'postcode_triggers.sql');
-        $sTemplate = str_replace('{modulepath}', $this->sModulePath, $sTemplate);
-        if ($this->bEnableDiffUpdates) {
-            $sTemplate = str_replace('RETURN NEW; -- %DIFFUPDATES%', '--', $sTemplate);
+        $oCmd = (clone($this->oNominatimCmd))
+                ->addParams('refresh', '--functions');
+
+        if (!$this->bEnableDiffUpdates) {
+            $oCmd->addParams('--no-diff-updates');
         }
         }
+
         if ($this->bEnableDebugStatements) {
         if ($this->bEnableDebugStatements) {
-            $sTemplate = str_replace('--DEBUG:', '', $sTemplate);
-        }
-        if (CONST_Limit_Reindexing) {
-            $sTemplate = str_replace('--LIMIT INDEXING:', '', $sTemplate);
-        }
-        if (!CONST_Use_US_Tiger_Data) {
-            $sTemplate = str_replace('-- %NOTIGERDATA% ', '', $sTemplate);
-        }
-        if (!CONST_Use_Aux_Location_data) {
-            $sTemplate = str_replace('-- %NOAUXDATA% ', '', $sTemplate);
+            $oCmd->addParams('--enable-debug-statements');
         }
 
         }
 
-        $sReverseOnly = $this->dbReverseOnly() ? 'true' : 'false';
-        $sTemplate = str_replace('%REVERSE-ONLY%', $sReverseOnly, $sTemplate);
-
-        $this->pgsqlRunScript($sTemplate);
+        $oCmd->run();
     }
 
     private function pgsqlRunPartitionScript($sTemplate)
     {
         $sSQL = 'select distinct partition from country_name';
     }
 
     private function pgsqlRunPartitionScript($sTemplate)
     {
         $sSQL = 'select distinct partition from country_name';
-        $aPartitions = $this->oDB->getCol($sSQL);
+        $aPartitions = $this->db()->getCol($sSQL);
         if (!$this->bNoPartitions) $aPartitions[] = 0;
 
         preg_match_all('#^-- start(.*?)^-- end#ms', $sTemplate, $aMatches, PREG_SET_ORDER);
         if (!$this->bNoPartitions) $aPartitions[] = 0;
 
         preg_match_all('#^-- start(.*?)^-- end#ms', $sTemplate, $aMatches, PREG_SET_ORDER);
@@ -702,21 +836,21 @@ class SetupFunctions
     {
         if (!file_exists($sFilename)) fail('unable to find '.$sFilename);
 
     {
         if (!file_exists($sFilename)) fail('unable to find '.$sFilename);
 
-        $sCMD = 'psql'
-            .' -p '.escapeshellarg($this->aDSNInfo['port'])
-            .' -d '.escapeshellarg($this->aDSNInfo['database']);
+        $oCmd = (new \Nominatim\Shell('psql'))
+                ->addParams('--port', $this->aDSNInfo['port'])
+                ->addParams('--dbname', $this->aDSNInfo['database']);
+
         if (!$this->bVerbose) {
         if (!$this->bVerbose) {
-            $sCMD .= ' -q';
+            $oCmd->addParams('--quiet');
         }
         if (isset($this->aDSNInfo['hostspec'])) {
         }
         if (isset($this->aDSNInfo['hostspec'])) {
-            $sCMD .= ' -h '.escapeshellarg($this->aDSNInfo['hostspec']);
+            $oCmd->addParams('--host', $this->aDSNInfo['hostspec']);
         }
         if (isset($this->aDSNInfo['username'])) {
         }
         if (isset($this->aDSNInfo['username'])) {
-            $sCMD .= ' -U '.escapeshellarg($this->aDSNInfo['username']);
+            $oCmd->addParams('--username', $this->aDSNInfo['username']);
         }
         }
-        $aProcEnv = null;
         if (isset($this->aDSNInfo['password'])) {
         if (isset($this->aDSNInfo['password'])) {
-            $aProcEnv = array_merge(array('PGPASSWORD' => $this->aDSNInfo['password']), $_ENV);
+            $oCmd->addEnvPair('PGPASSWORD', $this->aDSNInfo['password']);
         }
         $ahGzipPipes = null;
         if (preg_match('/\\.gz$/', $sFilename)) {
         }
         $ahGzipPipes = null;
         if (preg_match('/\\.gz$/', $sFilename)) {
@@ -725,12 +859,14 @@ class SetupFunctions
                              1 => array('pipe', 'w'),
                              2 => array('file', '/dev/null', 'a')
                             );
                              1 => array('pipe', 'w'),
                              2 => array('file', '/dev/null', 'a')
                             );
-            $hGzipProcess = proc_open('zcat '.escapeshellarg($sFilename), $aDescriptors, $ahGzipPipes);
+            $oZcatCmd = new \Nominatim\Shell('zcat', $sFilename);
+
+            $hGzipProcess = proc_open($oZcatCmd->escapedCmd(), $aDescriptors, $ahGzipPipes);
             if (!is_resource($hGzipProcess)) fail('unable to start zcat');
             $aReadPipe = $ahGzipPipes[1];
             fclose($ahGzipPipes[0]);
         } else {
             if (!is_resource($hGzipProcess)) fail('unable to start zcat');
             $aReadPipe = $ahGzipPipes[1];
             fclose($ahGzipPipes[0]);
         } else {
-            $sCMD .= ' -f '.escapeshellarg($sFilename);
+            $oCmd->addParams('--file', $sFilename);
             $aReadPipe = array('pipe', 'r');
         }
         $aDescriptors = array(
             $aReadPipe = array('pipe', 'r');
         }
         $aDescriptors = array(
@@ -739,7 +875,8 @@ class SetupFunctions
                          2 => array('file', '/dev/null', 'a')
                         );
         $ahPipes = null;
                          2 => array('file', '/dev/null', 'a')
                         );
         $ahPipes = null;
-        $hProcess = proc_open($sCMD, $aDescriptors, $ahPipes, null, $aProcEnv);
+
+        $hProcess = proc_open($oCmd->escapedCmd(), $aDescriptors, $ahPipes, null, $oCmd->aEnv);
         if (!is_resource($hProcess)) fail('unable to start pgsql');
         // TODO: error checking
         while (!feof($ahPipes[1])) {
         if (!is_resource($hProcess)) fail('unable to start pgsql');
         // TODO: error checking
         while (!feof($ahPipes[1])) {
@@ -758,15 +895,15 @@ class SetupFunctions
 
     private function replaceSqlPatterns($sSql)
     {
 
     private function replaceSqlPatterns($sSql)
     {
-        $sSql = str_replace('{www-user}', CONST_Database_Web_User, $sSql);
+        $sSql = str_replace('{www-user}', getSetting('DATABASE_WEBUSER'), $sSql);
 
         $aPatterns = array(
 
         $aPatterns = array(
-                      '{ts:address-data}' => CONST_Tablespace_Address_Data,
-                      '{ts:address-index}' => CONST_Tablespace_Address_Index,
-                      '{ts:search-data}' => CONST_Tablespace_Search_Data,
-                      '{ts:search-index}' =>  CONST_Tablespace_Search_Index,
-                      '{ts:aux-data}' =>  CONST_Tablespace_Aux_Data,
-                      '{ts:aux-index}' =>  CONST_Tablespace_Aux_Index,
+                      '{ts:address-data}' => getSetting('TABLESPACE_ADDRESS_DATA'),
+                      '{ts:address-index}' => getSetting('TABLESPACE_ADDRESS_INDEX'),
+                      '{ts:search-data}' => getSetting('TABLESPACE_SEARCH_DATA'),
+                      '{ts:search-index}' =>  getSetting('TABLESPACE_SEARCH_INDEX'),
+                      '{ts:aux-data}' =>  getSetting('TABLESPACE_AUX_DATA'),
+                      '{ts:aux-index}' =>  getSetting('TABLESPACE_AUX_INDEX')
         );
 
         foreach ($aPatterns as $sPattern => $sTablespace) {
         );
 
         foreach ($aPatterns as $sPattern => $sTablespace) {
@@ -780,34 +917,17 @@ class SetupFunctions
         return $sSql;
     }
 
         return $sSql;
     }
 
-    private function runWithPgEnv($sCmd)
-    {
-        if ($this->bVerbose) {
-            echo "Execute: $sCmd\n";
-        }
-
-        $aProcEnv = null;
-
-        if (isset($this->aDSNInfo['password'])) {
-            $aProcEnv = array_merge(array('PGPASSWORD' => $this->aDSNInfo['password']), $_ENV);
-        }
-
-        return runWithEnv($sCmd, $aProcEnv);
-    }
-
     /**
      * Drop table with the given name if it exists.
      *
      * @param string $sName Name of table to remove.
      *
      * @return null
     /**
      * Drop table with the given name if it exists.
      *
      * @param string $sName Name of table to remove.
      *
      * @return null
-     *
-     * @pre connect() must have been called.
      */
     private function dropTable($sName)
     {
         if ($this->bVerbose) echo "Dropping table $sName\n";
      */
     private function dropTable($sName)
     {
         if ($this->bVerbose) echo "Dropping table $sName\n";
-        $this->oDB->exec('DROP TABLE IF EXISTS '.$sName.' CASCADE');
+        $this->db()->deleteTable($sName);
     }
 
     /**
     }
 
     /**
@@ -817,6 +937,23 @@ class SetupFunctions
      */
     private function dbReverseOnly()
     {
      */
     private function dbReverseOnly()
     {
-        return !($this->oDB->tableExists('search_name'));
+        return !($this->db()->tableExists('search_name'));
+    }
+
+    /**
+     * Try accessing the C module, so we know early if something is wrong.
+     *
+     * Raises Nominatim\DatabaseError on failure
+     */
+    private function checkModulePresence()
+    {
+        $sModulePath = getSetting('DATABASE_MODULE_PATH', CONST_InstallDir.'/module');
+        $sSQL = "CREATE FUNCTION nominatim_test_import_func(text) RETURNS text AS '";
+        $sSQL .= $sModulePath . "/nominatim.so', 'transliteration' LANGUAGE c IMMUTABLE STRICT";
+        $sSQL .= ';DROP FUNCTION nominatim_test_import_func(text);';
+
+        $oDB = new \Nominatim\DB();
+        $oDB->connect();
+        $oDB->exec($sSQL, null, 'Database server failed to load '.$sModulePath.'/nominatim.so module');
     }
 }
     }
 }
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