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635 | daniel-mar | 1 | <?php |
2 | |||
3 | /* |
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4 | * OIDplus 2.0 |
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5 | * Copyright 2019 - 2021 Daniel Marschall, ViaThinkSoft |
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6 | * |
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7 | * Licensed under the Apache License, Version 2.0 (the "License"); |
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8 | * you may not use this file except in compliance with the License. |
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9 | * You may obtain a copy of the License at |
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10 | * |
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11 | * http://www.apache.org/licenses/LICENSE-2.0 |
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12 | * |
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13 | * Unless required by applicable law or agreed to in writing, software |
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14 | * distributed under the License is distributed on an "AS IS" BASIS, |
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15 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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16 | * See the License for the specific language governing permissions and |
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17 | * limitations under the License. |
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18 | */ |
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19 | |||
1050 | daniel-mar | 20 | namespace ViaThinkSoft\OIDplus; |
635 | daniel-mar | 21 | |
22 | class OIDplusDatabaseConnectionPDO extends OIDplusDatabaseConnection { |
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23 | private $conn = null; |
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24 | private $last_error = null; // we need that because PDO divides prepared statement errors and normal query errors, but we have only one "error()" method |
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25 | private $transactions_supported = false; |
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26 | |||
27 | public function doQuery(string $sql, /*?array*/ $prepared_args=null): OIDplusQueryResult { |
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28 | $this->last_error = null; |
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29 | if (is_null($prepared_args)) { |
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30 | $res = $this->conn->query($sql); |
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31 | |||
32 | if ($res === false) { |
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33 | $this->last_error = $this->conn->errorInfo()[2]; |
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34 | throw new OIDplusSQLException($sql, $this->error()); |
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35 | } else { |
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36 | return new OIDplusQueryResultPDO($res); |
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37 | } |
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38 | } else { |
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39 | if (!is_array($prepared_args)) { |
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40 | throw new OIDplusException(_L('"prepared_args" must be either NULL or an ARRAY.')); |
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41 | } |
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42 | |||
43 | foreach ($prepared_args as &$value) { |
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44 | // We need to manually convert booleans into strings, because there is a |
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45 | // 14 year old bug that hasn't been adressed by the PDO developers: |
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46 | // https://bugs.php.net/bug.php?id=57157 |
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47 | if (is_bool($value)) { |
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48 | if ($this->slangDetectionDone) { |
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49 | $value = $this->getSlang()->getSQLBool($value); |
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50 | } else { |
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51 | // This works for everything except Microsoft Access (which needs -1 and 0) |
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52 | // Note: We are using '1' and '0' instead of 'true' and 'false' because MySQL converts boolean to tinyint(1) |
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53 | $value = $value ? '1' : '0'; |
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54 | } |
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55 | } |
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56 | } |
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57 | |||
58 | $ps = $this->conn->prepare($sql); |
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59 | if (!$ps) { |
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60 | $this->last_error = $this->conn->errorInfo()[2]; |
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61 | throw new OIDplusSQLException($sql, _L('Cannot prepare statement').': '.$this->error()); |
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62 | } |
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63 | |||
64 | if (!$ps->execute($prepared_args)) { |
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65 | $this->last_error = $ps->errorInfo()[2]; |
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66 | throw new OIDplusSQLException($sql, $this->error()); |
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67 | } |
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68 | return new OIDplusQueryResultPDO($ps); |
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69 | } |
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70 | } |
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71 | |||
72 | public function insert_id(): int { |
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73 | try { |
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74 | $out = @($this->conn->lastInsertId()); |
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75 | if ($out === false) return parent::insert_id(); // fallback method that uses the SQL slang |
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76 | return $out; |
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1050 | daniel-mar | 77 | } catch (\Exception $e) { |
635 | daniel-mar | 78 | return parent::insert_id(); // fallback method that uses the SQL slang |
79 | } |
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80 | } |
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81 | |||
82 | public function error(): string { |
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83 | $err = $this->last_error; |
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84 | if ($err == null) $err = ''; |
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85 | return $err; |
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86 | } |
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87 | |||
88 | protected function doConnect()/*: void*/ { |
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89 | if (!class_exists('PDO')) throw new OIDplusConfigInitializationException(_L('PHP extension "%1" not installed','PDO')); |
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90 | |||
91 | try { |
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92 | $options = [ |
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1050 | daniel-mar | 93 | \PDO::ATTR_ERRMODE => \PDO::ERRMODE_SILENT, |
94 | \PDO::ATTR_DEFAULT_FETCH_MODE => \PDO::FETCH_ASSOC, |
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95 | \PDO::ATTR_EMULATE_PREPARES => true, |
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635 | daniel-mar | 96 | ]; |
97 | |||
98 | // Try connecting to the database |
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787 | daniel-mar | 99 | $dsn = OIDplus::baseConfig()->getValue('PDO_DSN', 'mysql:host=localhost;dbname=oidplus;charset=UTF8'); |
635 | daniel-mar | 100 | $username = OIDplus::baseConfig()->getValue('PDO_USERNAME', 'root'); |
101 | $password = OIDplus::baseConfig()->getValue('PDO_PASSWORD', ''); |
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787 | daniel-mar | 102 | |
103 | if (stripos($dsn,"charset=") === false) $dsn = "$dsn;charset=UTF8"; |
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104 | |||
1050 | daniel-mar | 105 | $this->conn = new \PDO($dsn, $username, $password, $options); |
106 | } catch (\PDOException $e) { |
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635 | daniel-mar | 107 | $message = $e->getMessage(); |
863 | daniel-mar | 108 | throw new OIDplusConfigInitializationException(trim(_L('Connection to the database failed!').' '.$message)); |
635 | daniel-mar | 109 | } |
110 | |||
111 | $this->last_error = null; |
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112 | |||
113 | try { |
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114 | @$this->conn->exec("SET NAMES 'utf8'"); |
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1050 | daniel-mar | 115 | } catch (\Exception $e) { |
635 | daniel-mar | 116 | } |
117 | |||
118 | // We check if the DBMS supports autocommit. |
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119 | // Attention: Check it after you have sent a query already, because Microsoft Access doesn't seem to allow |
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120 | // changing auto commit once a query was executed ("Attribute cannot be set now SQLState: S1011") |
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121 | // Note: For some weird reason we *DO* need to redirect the output to "$dummy", otherwise it won't work! |
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122 | $sql = "select name from ###config where 1=0"; |
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123 | $sql = str_replace('###', OIDplus::baseConfig()->getValue('TABLENAME_PREFIX', ''), $sql); |
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124 | $dummy = $this->conn->query($sql); |
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125 | try { |
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126 | $this->conn->beginTransaction(); |
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127 | $this->conn->rollBack(); |
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128 | $this->transactions_supported = true; |
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1050 | daniel-mar | 129 | } catch (\Exception $e) { |
635 | daniel-mar | 130 | $this->transactions_supported = false; |
131 | } |
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132 | } |
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133 | |||
134 | protected function doDisconnect()/*: void*/ { |
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135 | $this->conn = null; // the connection will be closed by removing the reference |
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136 | } |
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137 | |||
138 | private $intransaction = false; |
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139 | |||
140 | public function transaction_supported(): bool { |
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141 | return $this->transactions_supported; |
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142 | } |
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143 | |||
144 | public function transaction_level(): int { |
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145 | if (!$this->transaction_supported()) { |
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146 | // TODO? |
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147 | return 0; |
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148 | } |
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149 | return $this->intransaction ? 1 : 0; |
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150 | } |
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151 | |||
152 | public function transaction_begin()/*: void*/ { |
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153 | if (!$this->transaction_supported()) { |
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154 | // TODO? |
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155 | return; |
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156 | } |
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157 | if ($this->intransaction) throw new OIDplusException(_L('Nested transactions are not supported by this database plugin.')); |
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158 | $this->conn->beginTransaction(); |
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159 | $this->intransaction = true; |
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160 | } |
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161 | |||
162 | public function transaction_commit()/*: void*/ { |
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163 | if (!$this->transaction_supported()) { |
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164 | // TODO? |
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165 | return; |
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166 | } |
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167 | $this->conn->commit(); |
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168 | $this->intransaction = false; |
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169 | } |
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170 | |||
171 | public function transaction_rollback()/*: void*/ { |
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172 | if (!$this->transaction_supported()) { |
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173 | // TODO? |
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174 | return; |
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175 | } |
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176 | $this->conn->rollBack(); |
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177 | $this->intransaction = false; |
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178 | } |
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179 | |||
180 | } |