1 | <?php
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2 | /**
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3 | *
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4 | * @package dbal
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5 | * @version $Id$
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6 | * @copyright (c) 2005 phpBB Group
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7 | * @license http://opensource.org/licenses/gpl-license.php GNU Public License
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8 | *
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9 | */
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10 |
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11 | /**
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12 | * @ignore
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13 | */
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14 | if (!defined('IN_PHPBB'))
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15 | {
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16 | exit;
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17 | }
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18 |
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19 | include_once($phpbb_root_path . 'includes/db/dbal.' . $phpEx);
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20 |
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21 | /**
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22 | * Firebird/Interbase Database Abstraction Layer
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23 | * Minimum Requirement is Firebird 2.1
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24 | * @package dbal
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25 | */
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26 | class dbal_firebird extends dbal
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27 | {
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28 | var $last_query_text = '';
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29 | var $service_handle = false;
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30 | var $affected_rows = 0;
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31 |
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32 | /**
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33 | * Connect to server
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34 | */
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35 | function sql_connect($sqlserver, $sqluser, $sqlpassword, $database, $port = false, $persistency = false, $new_link = false)
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36 | {
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37 | $this->persistency = $persistency;
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38 | $this->user = $sqluser;
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39 | $this->server = $sqlserver . (($port) ? ':' . $port : '');
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40 | $this->dbname = str_replace('\\', '/', $database);
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41 |
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42 | // There are three possibilities to connect to an interbase db
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43 | if (!$this->server)
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44 | {
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45 | $use_database = $this->dbname;
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46 | }
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47 | else if (strpos($this->server, '//') === 0)
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48 | {
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49 | $use_database = $this->server . $this->dbname;
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50 | }
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51 | else
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52 | {
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53 | $use_database = $this->server . ':' . $this->dbname;
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54 | }
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55 |
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56 | $this->db_connect_id = ($this->persistency) ? @ibase_pconnect($use_database, $this->user, $sqlpassword, false, false, 3) : @ibase_connect($use_database, $this->user, $sqlpassword, false, false, 3);
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57 |
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58 | $this->service_handle = (function_exists('ibase_service_attach') && $this->server) ? @ibase_service_attach($this->server, $this->user, $sqlpassword) : false;
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59 |
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60 | return ($this->db_connect_id) ? $this->db_connect_id : $this->sql_error('');
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61 | }
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62 |
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63 | /**
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64 | * Version information about used database
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65 | * @param bool $raw if true, only return the fetched sql_server_version
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66 | * @return string sql server version
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67 | */
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68 | function sql_server_info($raw = false)
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69 | {
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70 | if ($this->service_handle !== false && function_exists('ibase_server_info'))
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71 | {
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72 | return @ibase_server_info($this->service_handle, IBASE_SVC_SERVER_VERSION);
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73 | }
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74 |
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75 | return ($raw) ? '2.1' : 'Firebird/Interbase';
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76 | }
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77 |
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78 | /**
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79 | * SQL Transaction
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80 | * @access private
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81 | */
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82 | function _sql_transaction($status = 'begin')
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83 | {
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84 | switch ($status)
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85 | {
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86 | case 'begin':
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87 | return true;
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88 | break;
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89 |
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90 | case 'commit':
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91 | return @ibase_commit();
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92 | break;
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93 |
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94 | case 'rollback':
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95 | return @ibase_rollback();
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96 | break;
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97 | }
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98 |
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99 | return true;
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100 | }
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101 |
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102 | /**
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103 | * Base query method
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104 | *
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105 | * @param string $query Contains the SQL query which shall be executed
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106 | * @param int $cache_ttl Either 0 to avoid caching or the time in seconds which the result shall be kept in cache
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107 | * @return mixed When casted to bool the returned value returns true on success and false on failure
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108 | *
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109 | * @access public
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110 | */
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111 | function sql_query($query = '', $cache_ttl = 0)
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112 | {
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113 | if ($query != '')
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114 | {
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115 | global $cache;
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116 |
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117 | // EXPLAIN only in extra debug mode
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118 | if (defined('DEBUG_EXTRA'))
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119 | {
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120 | $this->sql_report('start', $query);
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121 | }
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122 |
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123 | $this->last_query_text = $query;
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124 | $this->query_result = ($cache_ttl && method_exists($cache, 'sql_load')) ? $cache->sql_load($query) : false;
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125 | $this->sql_add_num_queries($this->query_result);
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126 |
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127 | if ($this->query_result === false)
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128 | {
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129 | $array = array();
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130 | // We overcome Firebird's 32767 char limit by binding vars
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131 | if (strlen($query) > 32767)
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132 | {
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133 | if (preg_match('/^(INSERT INTO[^(]++)\\(([^()]+)\\) VALUES[^(]++\\((.*?)\\)$/s', $query, $regs))
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134 | {
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135 | if (strlen($regs[3]) > 32767)
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136 | {
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137 | preg_match_all('/\'(?:[^\']++|\'\')*+\'|[\d-.]+/', $regs[3], $vals, PREG_PATTERN_ORDER);
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138 |
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139 | $inserts = $vals[0];
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140 | unset($vals);
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141 |
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142 | foreach ($inserts as $key => $value)
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143 | {
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144 | if (!empty($value) && $value[0] === "'" && strlen($value) > 32769) // check to see if this thing is greater than the max + 'x2
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145 | {
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146 | $inserts[$key] = '?';
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147 | $array[] = str_replace("''", "'", substr($value, 1, -1));
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148 | }
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149 | }
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150 |
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151 | $query = $regs[1] . '(' . $regs[2] . ') VALUES (' . implode(', ', $inserts) . ')';
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152 | }
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153 | }
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154 | else if (preg_match('/^(UPDATE ([\\w_]++)\\s+SET )([\\w_]++\\s*=\\s*(?:\'(?:[^\']++|\'\')*+\'|\\d+)(?:,\\s*[\\w_]++\\s*=\\s*(?:\'(?:[^\']++|\'\')*+\'|[\d-.]+))*+)\\s+(WHERE.*)$/s', $query, $data))
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155 | {
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156 | if (strlen($data[3]) > 32767)
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157 | {
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158 | $update = $data[1];
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159 | $where = $data[4];
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160 | preg_match_all('/(\\w++)\\s*=\\s*(\'(?:[^\']++|\'\')*+\'|[\d-.]++)/', $data[3], $temp, PREG_SET_ORDER);
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161 | unset($data);
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162 |
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163 | $cols = array();
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164 | foreach ($temp as $value)
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165 | {
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166 | if (!empty($value[2]) && $value[2][0] === "'" && strlen($value[2]) > 32769) // check to see if this thing is greater than the max + 'x2
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167 | {
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168 | $array[] = str_replace("''", "'", substr($value[2], 1, -1));
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169 | $cols[] = $value[1] . '=?';
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170 | }
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171 | else
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172 | {
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173 | $cols[] = $value[1] . '=' . $value[2];
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174 | }
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175 | }
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176 |
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177 | $query = $update . implode(', ', $cols) . ' ' . $where;
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178 | unset($cols);
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179 | }
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180 | }
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181 | }
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182 |
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183 | if (!function_exists('ibase_affected_rows') && (preg_match('/^UPDATE ([\w_]++)\s+SET [\w_]++\s*=\s*(?:\'(?:[^\']++|\'\')*+\'|[\d-.]+)(?:,\s*[\w_]++\s*=\s*(?:\'(?:[^\']++|\'\')*+\'|[\d-.]+))*+\s+(WHERE.*)?$/s', $query, $regs) || preg_match('/^DELETE FROM ([\w_]++)\s*(WHERE\s*.*)?$/s', $query, $regs)))
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184 | {
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185 | $affected_sql = 'SELECT COUNT(*) as num_rows_affected FROM ' . $regs[1];
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186 | if (!empty($regs[2]))
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187 | {
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188 | $affected_sql .= ' ' . $regs[2];
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189 | }
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190 |
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191 | if (!($temp_q_id = @ibase_query($this->db_connect_id, $affected_sql)))
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192 | {
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193 | return false;
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194 | }
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195 |
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196 | $temp_result = @ibase_fetch_assoc($temp_q_id);
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197 | @ibase_free_result($temp_q_id);
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198 |
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199 | $this->affected_rows = ($temp_result) ? $temp_result['NUM_ROWS_AFFECTED'] : false;
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200 | }
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201 |
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202 | if (sizeof($array))
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203 | {
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204 | $p_query = @ibase_prepare($this->db_connect_id, $query);
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205 | array_unshift($array, $p_query);
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206 | $this->query_result = call_user_func_array('ibase_execute', $array);
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207 | unset($array);
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208 |
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209 | if ($this->query_result === false)
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210 | {
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211 | $this->sql_error($query);
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212 | }
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213 | }
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214 | else if (($this->query_result = @ibase_query($this->db_connect_id, $query)) === false)
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215 | {
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216 | $this->sql_error($query);
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217 | }
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218 |
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219 | if (defined('DEBUG_EXTRA'))
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220 | {
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221 | $this->sql_report('stop', $query);
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222 | }
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223 |
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224 | if (!$this->transaction)
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225 | {
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226 | if (function_exists('ibase_commit_ret'))
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227 | {
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228 | @ibase_commit_ret();
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229 | }
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230 | else
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231 | {
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232 | // way cooler than ibase_commit_ret :D
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233 | @ibase_query('COMMIT RETAIN;');
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234 | }
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235 | }
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236 |
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237 | if ($cache_ttl && method_exists($cache, 'sql_save'))
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238 | {
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239 | $this->open_queries[(int) $this->query_result] = $this->query_result;
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240 | $cache->sql_save($query, $this->query_result, $cache_ttl);
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241 | }
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242 | else if (strpos($query, 'SELECT') === 0 && $this->query_result)
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243 | {
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244 | $this->open_queries[(int) $this->query_result] = $this->query_result;
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245 | }
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246 | }
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247 | else if (defined('DEBUG_EXTRA'))
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248 | {
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249 | $this->sql_report('fromcache', $query);
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250 | }
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251 | }
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252 | else
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253 | {
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254 | return false;
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255 | }
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256 |
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257 | return $this->query_result;
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258 | }
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259 |
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260 | /**
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261 | * Build LIMIT query
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262 | */
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263 | function _sql_query_limit($query, $total, $offset = 0, $cache_ttl = 0)
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264 | {
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265 | $this->query_result = false;
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266 |
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267 | $query = 'SELECT FIRST ' . $total . ((!empty($offset)) ? ' SKIP ' . $offset : '') . substr($query, 6);
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268 |
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269 | return $this->sql_query($query, $cache_ttl);
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270 | }
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271 |
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272 | /**
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273 | * Return number of affected rows
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274 | */
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275 | function sql_affectedrows()
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276 | {
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277 | // PHP 5+ function
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278 | if (function_exists('ibase_affected_rows'))
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279 | {
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280 | return ($this->db_connect_id) ? @ibase_affected_rows($this->db_connect_id) : false;
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281 | }
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282 | else
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283 | {
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284 | return $this->affected_rows;
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285 | }
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286 | }
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287 |
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288 | /**
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289 | * Fetch current row
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290 | */
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291 | function sql_fetchrow($query_id = false)
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292 | {
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293 | global $cache;
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294 |
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295 | if ($query_id === false)
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296 | {
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297 | $query_id = $this->query_result;
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298 | }
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299 |
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300 | if (isset($cache->sql_rowset[$query_id]))
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301 | {
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302 | return $cache->sql_fetchrow($query_id);
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303 | }
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304 |
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305 | if ($query_id === false)
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306 | {
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307 | return false;
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308 | }
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309 |
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310 | $row = array();
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311 | $cur_row = @ibase_fetch_object($query_id, IBASE_TEXT);
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312 |
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313 | if (!$cur_row)
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314 | {
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315 | return false;
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316 | }
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317 |
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318 | foreach (get_object_vars($cur_row) as $key => $value)
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319 | {
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320 | $row[strtolower($key)] = (is_string($value)) ? trim(str_replace(array("\\0", "\\n"), array("\0", "\n"), $value)) : $value;
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321 | }
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322 |
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323 | return (sizeof($row)) ? $row : false;
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324 | }
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325 |
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326 | /**
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327 | * Seek to given row number
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328 | * rownum is zero-based
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329 | */
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330 | function sql_rowseek($rownum, &$query_id)
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331 | {
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332 | global $cache;
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333 |
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334 | if ($query_id === false)
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335 | {
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336 | $query_id = $this->query_result;
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337 | }
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338 |
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339 | if (isset($cache->sql_rowset[$query_id]))
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340 | {
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341 | return $cache->sql_rowseek($rownum, $query_id);
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342 | }
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343 |
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344 | if ($query_id === false)
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345 | {
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346 | return;
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347 | }
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348 |
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349 | $this->sql_freeresult($query_id);
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350 | $query_id = $this->sql_query($this->last_query_text);
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351 |
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352 | if ($query_id === false)
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353 | {
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354 | return false;
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355 | }
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356 |
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357 | // We do not fetch the row for rownum == 0 because then the next resultset would be the second row
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358 | for ($i = 0; $i < $rownum; $i++)
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359 | {
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360 | if (!$this->sql_fetchrow($query_id))
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361 | {
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362 | return false;
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363 | }
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364 | }
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365 |
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366 | return true;
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367 | }
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368 |
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369 | /**
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370 | * Get last inserted id after insert statement
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371 | */
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372 | function sql_nextid()
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373 | {
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374 | $query_id = $this->query_result;
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375 |
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376 | if ($query_id !== false && $this->last_query_text != '')
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377 | {
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378 | if ($this->query_result && preg_match('#^INSERT[\t\n ]+INTO[\t\n ]+([a-z0-9\_\-]+)#i', $this->last_query_text, $tablename))
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379 | {
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380 | $sql = 'SELECT GEN_ID(' . $tablename[1] . '_gen, 0) AS new_id FROM RDB$DATABASE';
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381 |
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382 | if (!($temp_q_id = @ibase_query($this->db_connect_id, $sql)))
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383 | {
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384 | return false;
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385 | }
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386 |
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387 | $temp_result = @ibase_fetch_assoc($temp_q_id);
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388 | @ibase_free_result($temp_q_id);
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389 |
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390 | return ($temp_result) ? $temp_result['NEW_ID'] : false;
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391 | }
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392 | }
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393 |
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394 | return false;
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395 | }
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396 |
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397 | /**
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398 | * Free sql result
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399 | */
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400 | function sql_freeresult($query_id = false)
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401 | {
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402 | global $cache;
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403 |
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404 | if ($query_id === false)
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405 | {
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406 | $query_id = $this->query_result;
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407 | }
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408 |
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409 | if (isset($cache->sql_rowset[$query_id]))
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410 | {
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411 | return $cache->sql_freeresult($query_id);
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412 | }
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413 |
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414 | if (isset($this->open_queries[(int) $query_id]))
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415 | {
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416 | unset($this->open_queries[(int) $query_id]);
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417 | return @ibase_free_result($query_id);
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418 | }
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419 |
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420 | return false;
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421 | }
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422 |
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423 | /**
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424 | * Escape string used in sql query
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425 | */
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426 | function sql_escape($msg)
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427 | {
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428 | return str_replace(array("'", "\0"), array("''", ''), $msg);
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429 | }
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430 |
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431 | /**
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432 | * Build LIKE expression
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433 | * @access private
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434 | */
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435 | function _sql_like_expression($expression)
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436 | {
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437 | return $expression . " ESCAPE '\\'";
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438 | }
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439 |
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440 | /**
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441 | * Build db-specific query data
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442 | * @access private
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443 | */
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444 | function _sql_custom_build($stage, $data)
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445 | {
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446 | return $data;
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447 | }
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448 |
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449 | function _sql_bit_and($column_name, $bit, $compare = '')
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450 | {
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451 | return 'BIN_AND(' . $column_name . ', ' . (1 << $bit) . ')' . (($compare) ? ' ' . $compare : '');
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452 | }
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453 |
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454 | function _sql_bit_or($column_name, $bit, $compare = '')
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455 | {
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456 | return 'BIN_OR(' . $column_name . ', ' . (1 << $bit) . ')' . (($compare) ? ' ' . $compare : '');
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457 | }
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458 |
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459 | /**
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460 | * return sql error array
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461 | * @access private
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462 | */
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463 | function _sql_error()
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464 | {
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465 | return array(
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466 | 'message' => @ibase_errmsg(),
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467 | 'code' => (@function_exists('ibase_errcode') ? @ibase_errcode() : '')
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468 | );
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469 | }
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470 |
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471 | /**
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472 | * Close sql connection
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473 | * @access private
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474 | */
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475 | function _sql_close()
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476 | {
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477 | if ($this->service_handle !== false)
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478 | {
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479 | @ibase_service_detach($this->service_handle);
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480 | }
|
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481 |
|
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482 | return @ibase_close($this->db_connect_id);
|
---|
483 | }
|
---|
484 |
|
---|
485 | /**
|
---|
486 | * Build db-specific report
|
---|
487 | * @access private
|
---|
488 | */
|
---|
489 | function _sql_report($mode, $query = '')
|
---|
490 | {
|
---|
491 | switch ($mode)
|
---|
492 | {
|
---|
493 | case 'start':
|
---|
494 | break;
|
---|
495 |
|
---|
496 | case 'fromcache':
|
---|
497 | $endtime = explode(' ', microtime());
|
---|
498 | $endtime = $endtime[0] + $endtime[1];
|
---|
499 |
|
---|
500 | $result = @ibase_query($this->db_connect_id, $query);
|
---|
501 | while ($void = @ibase_fetch_object($result, IBASE_TEXT))
|
---|
502 | {
|
---|
503 | // Take the time spent on parsing rows into account
|
---|
504 | }
|
---|
505 | @ibase_free_result($result);
|
---|
506 |
|
---|
507 | $splittime = explode(' ', microtime());
|
---|
508 | $splittime = $splittime[0] + $splittime[1];
|
---|
509 |
|
---|
510 | $this->sql_report('record_fromcache', $query, $endtime, $splittime);
|
---|
511 |
|
---|
512 | break;
|
---|
513 | }
|
---|
514 | }
|
---|
515 | }
|
---|
516 |
|
---|
517 | ?>
|
---|