From b693dcf4e3981425df7b3cda504cab3966d32ebe Mon Sep 17 00:00:00 2001
From: Thomas Bruederli <thomas@roundcube.net>
Date: Mon, 12 May 2014 11:05:53 -0400
Subject: [PATCH] Merge branch 'master' of github.com:roundcube/roundcubemail

---
 program/lib/Roundcube/rcube_db.php |  116 ++++++++++++++++++++++++++++++++++++++++++---------------
 1 files changed, 85 insertions(+), 31 deletions(-)

diff --git a/program/lib/Roundcube/rcube_db.php b/program/lib/Roundcube/rcube_db.php
index b215c3a..a46df97 100644
--- a/program/lib/Roundcube/rcube_db.php
+++ b/program/lib/Roundcube/rcube_db.php
@@ -31,7 +31,6 @@
     protected $db_dsnr;               // DSN for read operations
     protected $db_connected = false;  // Already connected ?
     protected $db_mode;               // Connection mode
-    protected $db_table_dsn_map = array();
     protected $dbh;                   // Connection handle
     protected $dbhs = array();
     protected $table_connections = array();
@@ -100,12 +99,15 @@
         $this->db_dsnw  = $db_dsnw;
         $this->db_dsnr  = $db_dsnr;
         $this->db_pconn = $pconn;
-        $this->db_dsnw_noread = rcube::get_instance()->config->get('db_dsnw_noread', false);
 
         $this->db_dsnw_array = self::parse_dsn($db_dsnw);
         $this->db_dsnr_array = self::parse_dsn($db_dsnr);
 
-        $this->db_table_dsn_map = array_map(array($this, 'table_name'), rcube::get_instance()->config->get('db_table_dsn', array()));
+        $config = rcube::get_instance()->config;
+
+        $this->options['table_prefix']  = $config->get('db_prefix');
+        $this->options['dsnw_noread']   = $config->get('db_dsnw_noread', false);
+        $this->options['table_dsn_map'] = array_map(array($this, 'table_name'), $config->get('db_table_dsn', array()));
     }
 
     /**
@@ -206,7 +208,7 @@
         // Already connected
         if ($this->db_connected) {
             // connected to db with the same or "higher" mode (if allowed)
-            if ($this->db_mode == $mode || $this->db_mode == 'w' && !$force && !$this->db_dsnw_noread) {
+            if ($this->db_mode == $mode || $this->db_mode == 'w' && !$force && !$this->options['dsnw_noread']) {
                 return;
             }
         }
@@ -241,14 +243,14 @@
                 $table = $m[2];
 
                 // always use direct mapping
-                if ($this->db_table_dsn_map[$table]) {
-                    $mode = $this->db_table_dsn_map[$table];
+                if ($this->options['table_dsn_map'][$table]) {
+                    $mode = $this->options['table_dsn_map'][$table];
                     break;  // primary table rules
                 }
                 else if ($mode == 'r') {
                     // connected to db with the same or "higher" mode for this table
                     $db_mode = $this->table_connections[$table];
-                    if ($db_mode == 'w' && !$this->db_dsnw_noread) {
+                    if ($db_mode == 'w' && !$this->options['dsnw_noread']) {
                         $mode = $db_mode;
                     }
                 }
@@ -256,7 +258,7 @@
 
             // remember mode chosen (for primary table)
             $table = $matches[0][2];
-            $this->table_connections[$table];
+            $this->table_connections[$table] = $mode;
         }
 
         return $mode;
@@ -392,7 +394,7 @@
      */
     protected function _query($query, $offset, $numrows, $params)
     {
-        $query = trim($query);
+        $query = ltrim($query);
 
         $this->db_connect($this->dsn_select($query), true);
 
@@ -405,27 +407,28 @@
             $query = $this->set_limit($query, $numrows, $offset);
         }
 
-        $params = (array) $params;
-
         // Because in Roundcube we mostly use queries that are
         // executed only once, we will not use prepared queries
         $pos = 0;
         $idx = 0;
 
-        while ($pos = strpos($query, '?', $pos)) {
-            if ($query[$pos+1] == '?') {  // skip escaped ?
-                $pos += 2;
-            }
-            else {
-                $val = $this->quote($params[$idx++]);
-                unset($params[$idx-1]);
-                $query = substr_replace($query, $val, $pos, 1);
-                $pos += strlen($val);
+        if (count($params)) {
+            while ($pos = strpos($query, '?', $pos)) {
+                if ($query[$pos+1] == '?') {  // skip escaped '?'
+                    $pos += 2;
+                }
+                else {
+                    $val = $this->quote($params[$idx++]);
+                    unset($params[$idx-1]);
+                    $query = substr_replace($query, $val, $pos, 1);
+                    $pos += strlen($val);
+                }
             }
         }
 
-        // replace escaped ? back to normal
-        $query = rtrim(strtr($query, array('??' => '?')), ';');
+        // replace escaped '?' back to normal, see self::quote()
+        $query = str_replace('??', '?', $query);
+        $query = rtrim($query, " \t\n\r\0\x0B;");
 
         $this->debug($query);
 
@@ -456,7 +459,7 @@
     {
         $error = $this->dbh->errorInfo();
 
-        if (empty($this->options['ignore_key_errors']) || $error[0] != '23000') {
+        if (empty($this->options['ignore_key_errors']) || !in_array($error[0], array('23000', '23505'))) {
             $this->db_error = true;
             $this->db_error_msg = sprintf('[%s] %s', $error[1], $error[2]);
 
@@ -919,14 +922,8 @@
      */
     public function table_name($table)
     {
-        static $rcube;
-
-        if (!$rcube) {
-            $rcube = rcube::get_instance();
-        }
-
         // add prefix to the table name if configured
-        if (($prefix = $rcube->config->get('db_prefix')) && strpos($table, $prefix) !== 0) {
+        if (($prefix = $this->options['table_prefix']) && strpos($table, $prefix) !== 0) {
             return $prefix . $table;
         }
 
@@ -952,7 +949,7 @@
      */
     public function set_table_dsn($table, $mode)
     {
-        $this->db_table_dsn_map[$this->table_name($table)] = $mode;
+        $this->options['table_dsn_map'][$this->table_name($table)] = $mode;
     }
 
     /**
@@ -1128,4 +1125,61 @@
 
         return $result;
     }
+
+    /**
+     * Execute the given SQL script
+     *
+     * @param string SQL queries to execute
+     *
+     * @return boolen True on success, False on error
+     */
+    public function exec_script($sql)
+    {
+        $sql  = $this->fix_table_names($sql);
+        $buff = '';
+
+        foreach (explode("\n", $sql) as $line) {
+            if (preg_match('/^--/', $line) || trim($line) == '')
+                continue;
+
+            $buff .= $line . "\n";
+            if (preg_match('/(;|^GO)$/', trim($line))) {
+                $this->query($buff);
+                $buff = '';
+                if ($this->db_error) {
+                    break;
+                }
+            }
+        }
+
+        return !$this->db_error;
+    }
+
+    /**
+     * Parse SQL file and fix table names according to table prefix
+     */
+    protected function fix_table_names($sql)
+    {
+        if (!$this->options['table_prefix']) {
+            return $sql;
+        }
+
+        $sql = preg_replace_callback(
+            '/((TABLE|TRUNCATE|(?<!ON )UPDATE|INSERT INTO|FROM'
+            . '| ON(?! (DELETE|UPDATE))|REFERENCES|CONSTRAINT|FOREIGN KEY|INDEX)'
+            . '\s+(IF (NOT )?EXISTS )?[`"]*)([^`"\( \r\n]+)/',
+            array($this, 'fix_table_names_callback'),
+            $sql
+        );
+
+        return $sql;
+    }
+
+    /**
+     * Preg_replace callback for fix_table_names()
+     */
+    protected function fix_table_names_callback($matches)
+    {
+        return $matches[1] . $this->options['table_prefix'] . $matches[count($matches)-1];
+    }
 }

--
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