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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 OIDplusDatabaseConnectionPgSql extends OIDplusDatabaseConnection { |
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23 | private $conn = null; |
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24 | private $already_prepared = array(); |
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25 | private $last_error = null; // do the same like MySQL+PDO, just to be equal in the behavior |
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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 | $res = @pg_query($this->conn, $sql); |
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31 | |||
32 | if ($res === false) { |
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33 | $this->last_error = pg_last_error($this->conn); |
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34 | throw new OIDplusSQLException($sql, $this->error()); |
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35 | } else { |
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36 | return new OIDplusQueryResultPgSql($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 | // convert ? ? ? to $1 $2 $3 |
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44 | $sql = preg_replace_callback('@\\?@', function($found) { |
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45 | static $i = 0; |
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46 | $i++; |
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47 | return '$'.$i; |
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786 | daniel-mar | 48 | }, $sql, count($prepared_args)); |
635 | daniel-mar | 49 | |
50 | $prepare_name = 'OIDplus_ps_'.sha1($sql); |
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51 | if (!in_array($prepare_name, $this->already_prepared)) { |
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52 | $res = @pg_prepare($this->conn, $prepare_name, $sql); |
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53 | if ($res === false) { |
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54 | $this->last_error = pg_last_error($this->conn); |
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55 | throw new OIDplusSQLException($sql, _L('Cannot prepare statement').': '.$this->error()); |
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56 | } |
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57 | $this->already_prepared[] = $prepare_name; |
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58 | } |
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59 | |||
60 | foreach ($prepared_args as &$value) { |
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61 | if (is_bool($value)) $value = $value ? '1' : '0'; |
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62 | } |
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63 | |||
64 | $ps = pg_execute($this->conn, $prepare_name, $prepared_args); |
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65 | if ($ps === false) { |
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66 | $this->last_error = pg_last_error($this->conn); |
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67 | throw new OIDplusSQLException($sql, $this->error()); |
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68 | } |
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69 | return new OIDplusQueryResultPgSql($ps); |
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70 | } |
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71 | } |
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72 | |||
73 | public function insert_id(): int { |
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74 | try { |
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75 | return (int)$this->query('select lastval() as id')->fetch_object()->id; |
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1050 | daniel-mar | 76 | } catch (\Exception $e) { |
635 | daniel-mar | 77 | return 0; |
78 | } |
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79 | } |
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80 | |||
81 | public function error(): string { |
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82 | $err = $this->last_error; |
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83 | if ($err == null) $err = ''; |
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84 | return $err; |
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85 | } |
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86 | |||
87 | protected function doConnect()/*: void*/ { |
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88 | if (!function_exists('pg_connect')) throw new OIDplusConfigInitializationException(_L('PHP extension "%1" not installed','PostgreSQL')); |
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89 | |||
90 | // Try connecting to the database |
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91 | ob_start(); |
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92 | $err = ''; |
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93 | try { |
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94 | $host = OIDplus::baseConfig()->getValue('PGSQL_HOST', 'localhost:5432'); |
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95 | $username = OIDplus::baseConfig()->getValue('PGSQL_USERNAME', 'postgres'); |
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96 | $password = OIDplus::baseConfig()->getValue('PGSQL_PASSWORD', ''); |
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97 | $database = OIDplus::baseConfig()->getValue('PGSQL_DATABASE', 'oidplus'); |
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814 | daniel-mar | 98 | $socket = OIDplus::baseConfig()->getValue('PGSQL_SOCKET', ''); |
99 | if ($socket != '') { |
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100 | $hostname = $socket; |
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101 | $port = ''; |
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102 | } else { |
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103 | list($hostname, $port) = explode(':', "$host:5432"); |
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104 | } |
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105 | |||
106 | $connection_string = array(); |
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107 | if ($hostname != '') $connection_string[] = "host=$hostname"; |
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108 | if ($username != '') $connection_string[] = "user=$username"; |
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109 | if ($password != '') $connection_string[] = "password=$password"; |
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110 | if ($port != '') $connection_string[] = "port=$port"; |
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111 | if ($database != '') $connection_string[] = "dbname=$database"; |
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112 | |||
635 | daniel-mar | 113 | // We need to use PGSQL_CONNECT_FORCE_NEW because we require two connectoins (for isolated log message queries) |
814 | daniel-mar | 114 | $this->conn = pg_connect(implode(' ', $connection_string), PGSQL_CONNECT_FORCE_NEW); |
635 | daniel-mar | 115 | } finally { |
116 | # TODO: this does not seem to work?! (at least not for CLI) |
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117 | $err = ob_get_contents(); |
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118 | ob_end_clean(); |
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119 | } |
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120 | |||
121 | if (!$this->conn) { |
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863 | daniel-mar | 122 | throw new OIDplusConfigInitializationException(trim(_L('Connection to the database failed!').' ' . strip_tags($err))); |
635 | daniel-mar | 123 | } |
124 | |||
125 | $this->already_prepared = array(); |
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126 | $this->last_error = null; |
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127 | |||
128 | try { |
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129 | $this->query("SET NAMES 'utf8'"); |
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1050 | daniel-mar | 130 | } catch (\Exception $e) { |
635 | daniel-mar | 131 | } |
132 | } |
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133 | |||
134 | protected function doDisconnect()/*: void*/ { |
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135 | $this->already_prepared = array(); |
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136 | if (!is_null($this->conn)) { |
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137 | pg_close($this->conn); |
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138 | $this->conn = null; |
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139 | } |
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140 | } |
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141 | |||
142 | private $intransaction = false; |
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143 | |||
144 | public function transaction_supported(): bool { |
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145 | return true; |
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146 | } |
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147 | |||
148 | public function transaction_level(): int { |
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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->intransaction) throw new OIDplusException(_L('Nested transactions are not supported by this database plugin.')); |
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154 | $this->query('begin transaction'); |
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155 | $this->intransaction = true; |
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156 | } |
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157 | |||
158 | public function transaction_commit()/*: void*/ { |
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159 | $this->query('commit'); |
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160 | $this->intransaction = false; |
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161 | } |
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162 | |||
163 | public function transaction_rollback()/*: void*/ { |
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164 | $this->query('rollback'); |
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165 | $this->intransaction = false; |
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166 | } |
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167 | |||
168 | public function sqlDate(): string { |
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169 | return 'now()'; |
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170 | } |
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171 | |||
172 | protected function doGetSlang(bool $mustExist=true)/*: ?OIDplusSqlSlangPlugin*/ { |
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173 | $slang = OIDplus::getSqlSlangPlugin('pgsql'); |
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174 | if (is_null($slang)) { |
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175 | throw new OIDplusConfigInitializationException(_L('SQL-Slang plugin "%1" is missing. Please check if it exists in the directory "plugin/sqlSlang". If it is not existing, please recover it from an SVN snapshot or OIDplus TAR.GZ file.','pgsql')); |
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176 | } |
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177 | return $slang; |
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178 | } |
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179 | } |