Merged changes up to 2.3.16 into unstable
[fa-stable.git] / includes / db / connect_db.inc
index 203883b084e0a1fdb90f8c8be1296618cd4c162e..ec9e3816fa9d05323df237ad206efb2f9e65a81b 100644 (file)
     See the License here <http://www.gnu.org/licenses/gpl-3.0.html>.
 ***********************************************************************/
 
-function set_global_connection()
+/*
+       Converts encoding name to mysql standard.
+*/
+function get_mysql_encoding_name($encoding)
 {
-       global $db;
+       $db_encoding = array(
+               'UTF-8' => 'utf8',
+               'ISO-8859-1' => 'latin1',
+               'ISO-8859-2' => 'latin2',
+               'ISO-8859-7' => 'greek',
+               'ISO-8859-8' => 'hebrew',
+               'ISO-8859-9' => 'latin5',
+               'ISO-8859-13' => 'latin7',
+               'KOI8-R' => 'koi8r',
+               'KOI8-U' => 'koi8u',
+               'CP850' => 'cp850',
+               'CP866' => 'cp866',
+               'CP932' => 'cp932',
+               'CP1250' => 'cp1250',
+               'CP1251' => 'cp1251',
+               'CP1252' => 'latin1',
+               'CP1256' => 'cp1256',
+               'CP1257' => 'cp1257',
+               'GB2312' => 'gb2312',
+               'EUC-JP' => 'ujis',
+               'EUC-KR' => 'euckr',
+               'BIG5' => 'big5',
+               'GBK' => 'gbk',
+               'SHIFT_JIS' => 'sjis',
+               'TIS-620' => 'tis620',
+               'ASCII' => 'ascii',
+       );
+       $encoding = strtoupper($encoding);
 
-       $db = $_SESSION["wa_current_user"]->get_db_connection();
+       return isset($db_encoding[$encoding]) ? $db_encoding[$encoding] : null;
 }
 
-$db_duplicate_error_code = 1062;
+/*
+       Returns 'best' collation for various locale language codes
+*/
+function get_mysql_collation($lang=null)
+{
+       if (!$lang)
+               $lang = substr($_SESSION['language']->code, 0, 2);
+
+       $db_collation = array(
+               'is' => 'icelandic',
+               'lv' => 'latvian',
+               'ro' => 'romanian',
+               'sl' => 'slovenian',
+               'pl' => 'polish',
+               'et' => 'estonian',
+               'es' => 'spanish', // or 'spanish2',
+               'sw' => 'swedish',
+               'tr' => 'turkish',
+               'cs' => 'czech',
+               'da' => 'danish',
+               'lt' => 'lithuanian',
+               'sk' => 'slovak',
+               'sp' => 'spanish2',
+               'fa' => 'persian',
+               'hu' => 'hungarian',
+               'fr' => 'roman',
+               'it' => 'roman',
+       );
+
+       return 'utf8_'.(isset($db_collation[$lang]) ? $db_collation[$lang] : 'general').'_ci';
+}
+/*
+       Later we assume that database with version less than 2.4 is old database, 
+       which is subject to invalid encodings on text columns,
+       so no SET NAMES or equivalent should be used.
+*/
+function db_fixed()
+{
+       $result = db_query("SELECT value FROM ".TB_PREF."sys_prefs WHERE name='version_id'");
+       $data = db_fetch($result);
+       return !db_num_rows($result) // new database is fixed by default 
+               || ($data[0] > "2.3rc");
+}
+/*
+       Check database default charset.
+*/
+function db_get_charset()
+{
+       $result = db_query("SELECT @@character_set_database");
+       $var = db_fetch($result);
+       return $var[0];
+}
+
+/*
+       Set mysql client encoding.
+       Default is is encoding used by default language.
+*/
+function db_set_encoding($ui_encoding=null)
+{
+       global $dflt_lang, $installed_languages;
+
+       if (!isset($ui_encoding))
+       {
+               $lang = array_search_value($dflt_lang, $installed_languages, 'code');
+               $ui_encoding = strtoupper($lang['encoding']);
+       }
+
+       if ($mysql_enc = get_mysql_encoding_name($ui_encoding))
+               mysql_set_charset($mysql_enc);
+}
+
+/*
+       Connects application to company database.
+*/
+function set_global_connection($company=-1)
+{
+       global $db, $transaction_level, $path_to_root;
+       global  $db_connections;
+
+       include ($path_to_root . "/config_db.php");
+       if ($company == -1) 
+               $company = $_SESSION["wa_current_user"]->company ? $_SESSION["wa_current_user"]->company : 0;
+
+       cancel_transaction(); // cancel all aborted transactions if any
+       $transaction_level = 0;
 
-//DB wrapper functions to change only once for whole application
+       $_SESSION["wa_current_user"]->cur_con = $company;
+
+       $connection = $db_connections[$company];
+
+       $db = mysql_connect($connection["host"], $connection["dbuser"], $connection["dbpassword"]);
+               mysql_select_db($connection["dbname"], $db);
+
+       return $db;
+}
+
+$db_duplicate_error_code = 1062;
 
 function db_query($sql, $err_msg=null)
 {
-       global $db, $show_sql, $sql_trail, $select_trail, $go_debug;
+       global $db, $show_sql, $sql_trail, $select_trail, $go_debug, $sql_queries, $Ajax,
+               $db_connections, $db_last_inserted_id;
        
+       // set current db prefix
+       $comp = isset($_SESSION["wa_current_user"]->cur_con) ? $_SESSION["wa_current_user"]->cur_con : 0;
+       $cur_prefix = $db_connections[$comp]['tbpref'];
+       $sql = str_replace(TB_PREF, $cur_prefix, $sql);
+
        if ($show_sql)
        {
-               echo "<font face=arial size=2 color=000099><b>SQL..</b></font>";
-               echo "<pre>";
-               echo $sql;
-               echo "</pre>\n";
+               $Ajax->activate('footer_debug');
+               $sql_queries .= "<pre>$sql</pre>\n<hr>";
+       }
+
+       // mysql profiling
+       global $profile_sql;
+       if (@$profile_sql) get_usec();
+               $result = mysql_query($sql, $db);
+       if (@$profile_sql)
+       {
+               $profile_sql= false;
+               _vd($sql.'<br>:'.db_num_rows($result).'rows, '.get_usec());
        }
-       
 
-       $result = mysql_query($sql, $db);
        if($sql_trail) {
+               $db_last_inserted_id = mysql_insert_id($db);    // preserve in case trail insert is done
                if ($select_trail || (strstr($sql, 'SELECT') === false)) {
                        mysql_query(
-                       "INSERT INTO ".TB_PREF."sql_trail
+                       "INSERT INTO ".$cur_prefix."sql_trail
                                (`sql`, `result`, `msg`)
                                VALUES(".db_escape($sql).",".($result ? 1 : 0).",
                                ".db_escape($err_msg).")", $db);
@@ -136,8 +273,9 @@ function db_error_msg($conn)
 
 function db_insert_id()
 {
-       global $db;
-       return mysql_insert_id($db);
+       global $db_last_inserted_id, $sql_trail, $db;
+
+       return $sql_trail ? $db_last_inserted_id : mysql_insert_id($db);
 }
 
 function db_num_affected_rows()
@@ -146,4 +284,55 @@ function db_num_affected_rows()
        return mysql_affected_rows($db);
 }
 
-?>
+function db_field_name($result, $n)
+{
+       return mysql_field_name($result, $n);
+}
+
+function db_create_db($connection)
+{
+       $db = mysql_connect($connection["host"] ,
+               $connection["dbuser"], $connection["dbpassword"]);
+       if (!mysql_select_db($connection["dbname"], $db))
+       {
+               $sql = "CREATE DATABASE IF NOT EXISTS " . $connection["dbname"] . " COLLATE ".get_mysql_collation();
+
+               if (!mysql_query($sql) || !mysql_select_db($connection["dbname"], $db))
+                       return 0;
+       }
+       return $db;
+}
+
+function db_drop_db($connection)
+{
+
+       if ($connection["tbpref"] == "")
+       {
+               $sql = "DROP DATABASE IF EXISTS " . $connection["dbname"] . "";
+               return mysql_query($sql);
+       }
+       else
+       {
+       $res = db_query("show table status");
+       $all_tables = array();
+       while($row = db_fetch($res))
+               $all_tables[] = $row;
+        // get table structures
+               foreach ($all_tables as $table)
+               {
+                       if (strpos($table['Name'], $connection["tbpref"]) === 0)
+                               db_query("DROP TABLE `".$table['Name'] . "`");
+               }
+               //deleting the tables, how??
+               return true;
+       }
+}
+
+function db_close($dbase = null)
+{
+       global $db;
+       
+       if (!$dbase)
+               $dbase = $db;
+       return mysql_close($dbase);
+}