1 | <?php |
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2 | /** |
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3 | * PrivateBin |
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4 | * |
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5 | * a zero-knowledge paste bin |
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6 | * |
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7 | * @link https://github.com/PrivateBin/PrivateBin |
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8 | * @copyright 2012 Sébastien SAUVAGE (sebsauvage.net) |
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9 | * @license https://www.opensource.org/licenses/zlib-license.php The zlib/libpng License |
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10 | * @version 1.2.1 |
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11 | */ |
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12 | |||
13 | namespace PrivateBin\Data; |
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14 | |||
15 | use Exception; |
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16 | use PDO; |
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17 | use PDOException; |
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18 | use PrivateBin\Controller; |
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19 | use PrivateBin\Json; |
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20 | |||
21 | /** |
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22 | * Database |
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23 | * |
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24 | * Model for database access, implemented as a singleton. |
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25 | */ |
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26 | class Database extends AbstractData |
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27 | { |
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28 | /** |
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29 | * cache for select queries |
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30 | * |
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31 | * @var array |
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32 | */ |
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33 | private static $_cache = array(); |
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34 | |||
35 | /** |
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36 | * instance of database connection |
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37 | * |
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38 | * @access private |
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39 | * @static |
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40 | * @var PDO |
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41 | */ |
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42 | private static $_db; |
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43 | |||
44 | /** |
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45 | * table prefix |
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46 | * |
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47 | * @access private |
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48 | * @static |
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49 | * @var string |
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50 | */ |
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51 | private static $_prefix = ''; |
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52 | |||
53 | /** |
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54 | * database type |
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55 | * |
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56 | * @access private |
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57 | * @static |
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58 | * @var string |
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59 | */ |
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60 | private static $_type = ''; |
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61 | |||
62 | /** |
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63 | * get instance of singleton |
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64 | * |
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65 | * @access public |
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66 | * @static |
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67 | * @param array $options |
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68 | * @throws Exception |
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69 | * @return Database |
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70 | */ |
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71 | 69 | public static function getInstance(array $options) |
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72 | { |
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73 | // if needed initialize the singleton |
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74 | 69 | if (!(self::$_instance instanceof self)) { |
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75 | 38 | self::$_instance = new self; |
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76 | } |
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77 | |||
78 | 69 | if (is_array($options)) { |
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79 | // set table prefix if given |
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80 | 69 | if (array_key_exists('tbl', $options)) { |
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81 | 48 | self::$_prefix = $options['tbl']; |
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82 | } |
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83 | |||
84 | // initialize the db connection with new options |
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85 | if ( |
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86 | 69 | array_key_exists('dsn', $options) && |
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87 | 69 | array_key_exists('usr', $options) && |
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88 | 69 | array_key_exists('pwd', $options) && |
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89 | 69 | array_key_exists('opt', $options) |
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90 | ) { |
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91 | // set default options |
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92 | 69 | $options['opt'][PDO::ATTR_ERRMODE] = PDO::ERRMODE_EXCEPTION; |
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93 | 69 | $options['opt'][PDO::ATTR_EMULATE_PREPARES] = false; |
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94 | 69 | $options['opt'][PDO::ATTR_PERSISTENT] = true; |
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95 | 69 | $db_tables_exist = true; |
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96 | |||
97 | // setup type and dabase connection |
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98 | 69 | self::$_type = strtolower( |
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99 | 69 | substr($options['dsn'], 0, strpos($options['dsn'], ':')) |
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100 | ); |
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101 | 69 | $tableQuery = self::_getTableQuery(self::$_type); |
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102 | 69 | self::$_db = new PDO( |
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103 | 69 | $options['dsn'], |
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104 | 69 | $options['usr'], |
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105 | 69 | $options['pwd'], |
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106 | 69 | $options['opt'] |
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107 | ); |
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108 | |||
109 | // check if the database contains the required tables |
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110 | 69 | $tables = self::$_db->query($tableQuery)->fetchAll(PDO::FETCH_COLUMN, 0); |
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111 | |||
112 | // create paste table if necessary |
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113 | 69 | if (!in_array(self::_sanitizeIdentifier('paste'), $tables)) { |
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114 | 40 | self::_createPasteTable(); |
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115 | 40 | $db_tables_exist = false; |
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116 | } |
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117 | |||
118 | // create comment table if necessary |
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119 | 69 | if (!in_array(self::_sanitizeIdentifier('comment'), $tables)) { |
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120 | 40 | self::_createCommentTable(); |
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121 | 40 | $db_tables_exist = false; |
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122 | } |
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123 | |||
124 | // create config table if necessary |
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125 | 69 | $db_version = Controller::VERSION; |
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126 | 69 | if (!in_array(self::_sanitizeIdentifier('config'), $tables)) { |
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127 | 40 | self::_createConfigTable(); |
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128 | // if we only needed to create the config table, the DB is older then 0.22 |
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129 | 40 | if ($db_tables_exist) { |
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130 | 40 | $db_version = '0.21'; |
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131 | } |
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132 | } else { |
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133 | 60 | $db_version = self::_getConfig('VERSION'); |
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134 | } |
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135 | |||
136 | // update database structure if necessary |
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137 | 69 | if (version_compare($db_version, Controller::VERSION, '<')) { |
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138 | 69 | self::_upgradeDatabase($db_version); |
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139 | } |
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140 | } else { |
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141 | 4 | throw new Exception( |
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142 | 4 | 'Missing configuration for key dsn, usr, pwd or opt in the section model_options, please check your configuration file', 6 |
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143 | ); |
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144 | } |
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145 | } |
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146 | |||
147 | 69 | return self::$_instance; |
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148 | } |
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149 | |||
150 | /** |
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151 | * Create a paste. |
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152 | * |
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153 | * @access public |
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154 | * @param string $pasteid |
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155 | * @param array $paste |
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156 | * @return bool |
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157 | */ |
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158 | 38 | public function create($pasteid, array $paste) |
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159 | { |
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160 | if ( |
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161 | 38 | array_key_exists($pasteid, self::$_cache) |
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162 | ) { |
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163 | 38 | if (false !== self::$_cache[$pasteid]) { |
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164 | 2 | return false; |
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165 | } else { |
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166 | 38 | unset(self::$_cache[$pasteid]); |
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167 | } |
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168 | } |
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169 | |||
170 | 38 | $expire_date = 0; |
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171 | 38 | $opendiscussion = $burnafterreading = false; |
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172 | 38 | $attachment = $attachmentname = null; |
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173 | 38 | $meta = $paste['meta']; |
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174 | 38 | $isVersion1 = array_key_exists('data', $paste); |
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175 | 38 | list($createdKey) = self::_getVersionedKeys($isVersion1 ? 1 : 2); |
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176 | 38 | $created = (int) $meta[$createdKey]; |
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177 | 38 | unset($meta[$createdKey], $paste['meta']); |
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178 | 38 | if (array_key_exists('expire_date', $meta)) { |
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179 | 23 | $expire_date = (int) $meta['expire_date']; |
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180 | 23 | unset($meta['expire_date']); |
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181 | } |
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182 | 38 | if (array_key_exists('opendiscussion', $meta)) { |
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183 | 2 | $opendiscussion = $meta['opendiscussion']; |
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184 | 2 | unset($meta['opendiscussion']); |
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185 | } |
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186 | 38 | if (array_key_exists('burnafterreading', $meta)) { |
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187 | 1 | $burnafterreading = $meta['burnafterreading']; |
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188 | 1 | unset($meta['burnafterreading']); |
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189 | } |
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190 | 38 | if ($isVersion1) { |
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191 | 2 | if (array_key_exists('attachment', $meta)) { |
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192 | 1 | $attachment = $meta['attachment']; |
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193 | 1 | unset($meta['attachment']); |
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194 | } |
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195 | 2 | if (array_key_exists('attachmentname', $meta)) { |
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196 | 1 | $attachmentname = $meta['attachmentname']; |
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197 | 2 | unset($meta['attachmentname']); |
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198 | } |
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199 | } else { |
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200 | 36 | $opendiscussion = $paste['adata'][2]; |
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201 | 36 | $burnafterreading = $paste['adata'][3]; |
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202 | } |
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203 | 38 | return self::_exec( |
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204 | 38 | 'INSERT INTO ' . self::_sanitizeIdentifier('paste') . |
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205 | 38 | ' VALUES(?,?,?,?,?,?,?,?,?)', |
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206 | array( |
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207 | 38 | $pasteid, |
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208 | 38 | $isVersion1 ? $paste['data'] : Json::encode($paste), |
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209 | 38 | $created, |
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210 | 38 | $expire_date, |
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211 | 38 | (int) $opendiscussion, |
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212 | 38 | (int) $burnafterreading, |
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213 | 38 | Json::encode($meta), |
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214 | 38 | $attachment, |
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215 | 38 | $attachmentname, |
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216 | ) |
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217 | ); |
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218 | } |
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219 | |||
220 | /** |
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221 | * Read a paste. |
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222 | * |
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223 | * @access public |
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224 | * @param string $pasteid |
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225 | * @return array|false |
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226 | */ |
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227 | 54 | public function read($pasteid) |
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228 | { |
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229 | 54 | if (array_key_exists($pasteid, self::$_cache)) { |
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230 | 26 | return self::$_cache[$pasteid]; |
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231 | } |
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232 | |||
233 | 54 | self::$_cache[$pasteid] = false; |
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234 | 54 | $paste = self::_select( |
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235 | 54 | 'SELECT * FROM ' . self::_sanitizeIdentifier('paste') . |
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236 | 54 | ' WHERE dataid = ?', array($pasteid), true |
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237 | ); |
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238 | |||
239 | 54 | if ($paste === false) { |
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240 | 52 | return false; |
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241 | } |
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242 | // create array |
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243 | 37 | $data = Json::decode($paste['data']); |
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244 | 37 | $isVersion2 = array_key_exists('v', $data) && $data['v'] >= 2; |
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245 | 37 | if ($isVersion2) { |
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246 | 34 | self::$_cache[$pasteid] = $data; |
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247 | 34 | list($createdKey) = self::_getVersionedKeys(2); |
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248 | } else { |
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249 | 3 | self::$_cache[$pasteid] = array('data' => $paste['data']); |
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250 | 3 | list($createdKey) = self::_getVersionedKeys(1); |
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251 | } |
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252 | |||
253 | 37 | $paste['meta'] = Json::decode($paste['meta']); |
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254 | 37 | if (!is_array($paste['meta'])) { |
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255 | $paste['meta'] = array(); |
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256 | } |
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257 | 37 | $paste = self::upgradePreV1Format($paste); |
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258 | 37 | self::$_cache[$pasteid]['meta'] = $paste['meta']; |
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259 | 37 | self::$_cache[$pasteid]['meta'][$createdKey] = (int) $paste['postdate']; |
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260 | 37 | $expire_date = (int) $paste['expiredate']; |
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261 | 37 | if ($expire_date > 0) { |
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262 | 22 | self::$_cache[$pasteid]['meta']['expire_date'] = $expire_date; |
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263 | } |
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264 | 37 | if ($isVersion2) { |
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265 | 34 | return self::$_cache[$pasteid]; |
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266 | } |
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267 | |||
268 | // support v1 attachments |
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269 | 3 | if (array_key_exists('attachment', $paste) && strlen($paste['attachment'])) { |
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270 | 2 | self::$_cache[$pasteid]['attachment'] = $paste['attachment']; |
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271 | 2 | if (array_key_exists('attachmentname', $paste) && strlen($paste['attachmentname'])) { |
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272 | 2 | self::$_cache[$pasteid]['attachmentname'] = $paste['attachmentname']; |
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273 | } |
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274 | } |
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275 | 3 | if ($paste['opendiscussion']) { |
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276 | 2 | self::$_cache[$pasteid]['meta']['opendiscussion'] = true; |
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277 | } |
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278 | 3 | if ($paste['burnafterreading']) { |
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279 | 1 | self::$_cache[$pasteid]['meta']['burnafterreading'] = true; |
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280 | } |
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281 | |||
282 | 3 | return self::$_cache[$pasteid]; |
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283 | } |
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284 | |||
285 | /** |
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286 | * Delete a paste and its discussion. |
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287 | * |
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288 | * @access public |
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289 | * @param string $pasteid |
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290 | */ |
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291 | 21 | public function delete($pasteid) |
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292 | { |
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293 | 21 | self::_exec( |
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294 | 21 | 'DELETE FROM ' . self::_sanitizeIdentifier('paste') . |
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295 | 21 | ' WHERE dataid = ?', array($pasteid) |
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296 | ); |
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297 | 21 | self::_exec( |
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298 | 21 | 'DELETE FROM ' . self::_sanitizeIdentifier('comment') . |
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299 | 21 | ' WHERE pasteid = ?', array($pasteid) |
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300 | ); |
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301 | if ( |
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302 | 21 | array_key_exists($pasteid, self::$_cache) |
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303 | ) { |
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304 | 19 | unset(self::$_cache[$pasteid]); |
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305 | } |
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306 | 21 | } |
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307 | |||
308 | /** |
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309 | * Test if a paste exists. |
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310 | * |
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311 | * @access public |
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312 | * @param string $pasteid |
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313 | * @return bool |
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314 | */ |
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315 | 54 | public function exists($pasteid) |
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316 | { |
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317 | if ( |
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318 | 54 | !array_key_exists($pasteid, self::$_cache) |
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319 | ) { |
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320 | 53 | self::$_cache[$pasteid] = $this->read($pasteid); |
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321 | } |
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322 | 54 | return (bool) self::$_cache[$pasteid]; |
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323 | } |
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324 | |||
325 | /** |
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326 | * Create a comment in a paste. |
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327 | * |
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328 | * @access public |
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329 | * @param string $pasteid |
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330 | * @param string $parentid |
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331 | * @param string $commentid |
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332 | * @param array $comment |
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333 | * @return bool |
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334 | */ |
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335 | 8 | public function createComment($pasteid, $parentid, $commentid, array $comment) |
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336 | { |
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337 | 8 | if (array_key_exists('data', $comment)) { |
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338 | 1 | $version = 1; |
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339 | 1 | $data = $comment['data']; |
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340 | } else { |
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341 | 8 | $version = 2; |
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342 | 8 | $data = Json::encode($comment); |
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343 | } |
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344 | 8 | list($createdKey, $iconKey) = self::_getVersionedKeys($version); |
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345 | 8 | $meta = $comment['meta']; |
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346 | 8 | unset($comment['meta']); |
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347 | 8 | foreach (array('nickname', $iconKey) as $key) { |
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348 | 8 | if (!array_key_exists($key, $meta)) { |
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349 | 8 | $meta[$key] = null; |
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350 | } |
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351 | } |
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352 | 8 | return self::_exec( |
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353 | 8 | 'INSERT INTO ' . self::_sanitizeIdentifier('comment') . |
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354 | 8 | ' VALUES(?,?,?,?,?,?,?)', |
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355 | array( |
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356 | 8 | $commentid, |
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357 | 8 | $pasteid, |
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358 | 8 | $parentid, |
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359 | 8 | $data, |
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360 | 8 | $meta['nickname'], |
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361 | 8 | $meta[$iconKey], |
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362 | 8 | $meta[$createdKey], |
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363 | ) |
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364 | ); |
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365 | } |
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366 | |||
367 | /** |
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368 | * Read all comments of paste. |
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369 | * |
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370 | * @access public |
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371 | * @param string $pasteid |
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372 | * @return array |
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373 | */ |
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374 | 17 | public function readComments($pasteid) |
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375 | { |
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376 | 17 | $rows = self::_select( |
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377 | 17 | 'SELECT * FROM ' . self::_sanitizeIdentifier('comment') . |
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378 | 17 | ' WHERE pasteid = ?', array($pasteid) |
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379 | ); |
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380 | |||
381 | // create comment list |
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382 | 17 | $comments = array(); |
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383 | 17 | if (count($rows)) { |
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384 | 6 | foreach ($rows as $row) { |
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385 | 6 | $i = $this->getOpenSlot($comments, (int) $row['postdate']); |
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386 | 6 | $data = Json::decode($row['data']); |
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387 | 6 | if (array_key_exists('v', $data) && $data['v'] >= 2) { |
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388 | 6 | $version = 2; |
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389 | 6 | $comments[$i] = $data; |
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390 | } else { |
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391 | 1 | $version = 1; |
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392 | 1 | $comments[$i] = array('data' => $row['data']); |
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393 | } |
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394 | 6 | list($createdKey, $iconKey) = self::_getVersionedKeys($version); |
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395 | 6 | $comments[$i]['id'] = $row['dataid']; |
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396 | 6 | $comments[$i]['parentid'] = $row['parentid']; |
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397 | 6 | $comments[$i]['meta'] = array($createdKey => (int) $row['postdate']); |
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398 | 6 | foreach (array('nickname' => 'nickname', 'vizhash' => $iconKey) as $rowKey => $commentKey) { |
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399 | 6 | if (array_key_exists($rowKey, $row) && !empty($row[$rowKey])) { |
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400 | 6 | $comments[$i]['meta'][$commentKey] = $row[$rowKey]; |
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401 | } |
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402 | } |
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403 | } |
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404 | 6 | ksort($comments); |
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405 | } |
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406 | 17 | return $comments; |
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407 | } |
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408 | |||
409 | /** |
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410 | * Test if a comment exists. |
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411 | * |
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412 | * @access public |
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413 | * @param string $pasteid |
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414 | * @param string $parentid |
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415 | * @param string $commentid |
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416 | * @return bool |
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417 | */ |
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418 | 11 | public function existsComment($pasteid, $parentid, $commentid) |
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419 | { |
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420 | 11 | return (bool) self::_select( |
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421 | 11 | 'SELECT dataid FROM ' . self::_sanitizeIdentifier('comment') . |
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422 | 11 | ' WHERE pasteid = ? AND parentid = ? AND dataid = ?', |
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423 | 11 | array($pasteid, $parentid, $commentid), true |
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424 | ); |
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425 | } |
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426 | |||
427 | /** |
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428 | * Returns up to batch size number of paste ids that have expired |
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429 | * |
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430 | * @access private |
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431 | * @param int $batchsize |
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432 | * @return array |
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433 | */ |
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434 | 13 | protected function _getExpiredPastes($batchsize) |
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435 | { |
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436 | 13 | $pastes = array(); |
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437 | 13 | $rows = self::_select( |
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438 | 13 | 'SELECT dataid FROM ' . self::_sanitizeIdentifier('paste') . |
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439 | 13 | ' WHERE expiredate < ? AND expiredate != ? LIMIT ?', |
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440 | 13 | array(time(), 0, $batchsize) |
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441 | ); |
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442 | 13 | if (count($rows)) { |
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443 | 2 | foreach ($rows as $row) { |
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444 | 2 | $pastes[] = $row['dataid']; |
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445 | } |
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446 | } |
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447 | 13 | return $pastes; |
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448 | } |
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449 | |||
450 | /** |
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451 | * execute a statement |
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452 | * |
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453 | * @access private |
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454 | * @static |
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455 | * @param string $sql |
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456 | * @param array $params |
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457 | * @throws PDOException |
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458 | * @return bool |
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459 | */ |
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460 | 54 | private static function _exec($sql, array $params) |
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461 | { |
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462 | 54 | $statement = self::$_db->prepare($sql); |
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463 | 54 | $result = $statement->execute($params); |
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464 | 54 | $statement->closeCursor(); |
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465 | 54 | return $result; |
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466 | } |
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467 | |||
468 | /** |
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469 | * run a select statement |
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470 | * |
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471 | * @access private |
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472 | * @static |
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473 | * @param string $sql |
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474 | * @param array $params |
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475 | * @param bool $firstOnly if only the first row should be returned |
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476 | * @throws PDOException |
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477 | * @return array |
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478 | */ |
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479 | 68 | private static function _select($sql, array $params, $firstOnly = false) |
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480 | { |
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481 | 68 | $statement = self::$_db->prepare($sql); |
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482 | 68 | $statement->execute($params); |
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483 | 68 | $result = $firstOnly ? |
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484 | 68 | $statement->fetch(PDO::FETCH_ASSOC) : |
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485 | 68 | $statement->fetchAll(PDO::FETCH_ASSOC); |
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486 | 68 | $statement->closeCursor(); |
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487 | 68 | return $result; |
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488 | } |
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489 | |||
490 | /** |
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491 | * get version dependent key names |
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492 | * |
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493 | * @access private |
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494 | * @static |
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495 | * @param int $version |
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496 | * @return array |
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497 | */ |
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498 | 39 | private static function _getVersionedKeys($version) |
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499 | { |
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500 | 39 | if ($version === 1) { |
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501 | 4 | return array('postdate', 'vizhash'); |
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502 | } |
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503 | 36 | return array('created', 'icon'); |
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504 | } |
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505 | |||
506 | /** |
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507 | * get table list query, depending on the database type |
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508 | * |
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509 | * @access private |
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510 | * @static |
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511 | * @param string $type |
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512 | * @throws Exception |
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513 | * @return string |
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514 | */ |
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515 | 69 | private static function _getTableQuery($type) |
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516 | { |
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517 | switch ($type) { |
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518 | 69 | case 'ibm': |
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519 | 1 | $sql = 'SELECT tabname FROM SYSCAT.TABLES '; |
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520 | 1 | break; |
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521 | 69 | case 'informix': |
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522 | 1 | $sql = 'SELECT tabname FROM systables '; |
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523 | 1 | break; |
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524 | 69 | case 'mssql': |
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525 | $sql = 'SELECT name FROM sysobjects ' |
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526 | 1 | . "WHERE type = 'U' ORDER BY name"; |
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527 | 1 | break; |
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528 | 69 | case 'mysql': |
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529 | 1 | $sql = 'SHOW TABLES'; |
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530 | 1 | break; |
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531 | 69 | case 'oci': |
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532 | 1 | $sql = 'SELECT table_name FROM all_tables'; |
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533 | 1 | break; |
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534 | 69 | case 'pgsql': |
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535 | $sql = 'SELECT c.relname AS table_name ' |
||
536 | . 'FROM pg_class c, pg_user u ' |
||
537 | . "WHERE c.relowner = u.usesysid AND c.relkind = 'r' " |
||
538 | . 'AND NOT EXISTS (SELECT 1 FROM pg_views WHERE viewname = c.relname) ' |
||
539 | . "AND c.relname !~ '^(pg_|sql_)' " |
||
540 | . 'UNION ' |
||
541 | . 'SELECT c.relname AS table_name ' |
||
542 | . 'FROM pg_class c ' |
||
543 | . "WHERE c.relkind = 'r' " |
||
544 | . 'AND NOT EXISTS (SELECT 1 FROM pg_views WHERE viewname = c.relname) ' |
||
545 | . 'AND NOT EXISTS (SELECT 1 FROM pg_user WHERE usesysid = c.relowner) ' |
||
546 | 1 | . "AND c.relname !~ '^pg_'"; |
|
547 | 1 | break; |
|
548 | 69 | case 'sqlite': |
|
549 | $sql = "SELECT name FROM sqlite_master WHERE type='table' " |
||
550 | . 'UNION ALL SELECT name FROM sqlite_temp_master ' |
||
551 | 69 | . "WHERE type='table' ORDER BY name"; |
|
552 | 69 | break; |
|
553 | default: |
||
554 | 1 | throw new Exception( |
|
555 | 1 | "PDO type $type is currently not supported.", 5 |
|
556 | ); |
||
557 | } |
||
558 | 69 | return $sql; |
|
559 | } |
||
560 | |||
561 | /** |
||
562 | * get a value by key from the config table |
||
563 | * |
||
564 | * @access private |
||
565 | * @static |
||
566 | * @param string $key |
||
567 | * @throws PDOException |
||
568 | * @return string |
||
569 | */ |
||
570 | 60 | private static function _getConfig($key) |
|
571 | { |
||
572 | 60 | $row = self::_select( |
|
573 | 60 | 'SELECT value FROM ' . self::_sanitizeIdentifier('config') . |
|
574 | 60 | ' WHERE id = ?', array($key), true |
|
575 | ); |
||
576 | 60 | return $row['value']; |
|
577 | } |
||
578 | |||
579 | /** |
||
580 | * get the primary key clauses, depending on the database driver |
||
581 | * |
||
582 | * @access private |
||
583 | * @static |
||
584 | * @param string $key |
||
585 | * @return array |
||
586 | */ |
||
587 | 40 | private static function _getPrimaryKeyClauses($key = 'dataid') |
|
588 | { |
||
589 | 40 | $main_key = $after_key = ''; |
|
590 | 40 | if (self::$_type === 'mysql') { |
|
591 | $after_key = ", PRIMARY KEY ($key)"; |
||
592 | } else { |
||
593 | 40 | $main_key = ' PRIMARY KEY'; |
|
594 | } |
||
595 | 40 | return array($main_key, $after_key); |
|
596 | } |
||
597 | |||
598 | /** |
||
599 | * get the data type, depending on the database driver |
||
600 | * |
||
601 | * @access private |
||
602 | * @static |
||
603 | * @return string |
||
604 | */ |
||
605 | 40 | private static function _getDataType() |
|
606 | { |
||
607 | 40 | return self::$_type === 'pgsql' ? 'TEXT' : 'BLOB'; |
|
608 | } |
||
609 | |||
610 | /** |
||
611 | * get the attachment type, depending on the database driver |
||
612 | * |
||
613 | * @access private |
||
614 | * @static |
||
615 | * @return string |
||
616 | */ |
||
617 | 40 | private static function _getAttachmentType() |
|
618 | { |
||
619 | 40 | return self::$_type === 'pgsql' ? 'TEXT' : 'MEDIUMBLOB'; |
|
620 | } |
||
621 | |||
622 | /** |
||
623 | * create the paste table |
||
624 | * |
||
625 | * @access private |
||
626 | * @static |
||
627 | */ |
||
628 | 40 | private static function _createPasteTable() |
|
629 | { |
||
630 | 40 | list($main_key, $after_key) = self::_getPrimaryKeyClauses(); |
|
631 | 40 | $dataType = self::_getDataType(); |
|
632 | 40 | self::$_db->exec( |
|
633 | 40 | 'CREATE TABLE ' . self::_sanitizeIdentifier('paste') . ' ( ' . |
|
634 | 40 | "dataid CHAR(16) NOT NULL$main_key, " . |
|
635 | 40 | "data $dataType, " . |
|
636 | 40 | 'postdate INT, ' . |
|
637 | 40 | 'expiredate INT, ' . |
|
638 | 40 | 'opendiscussion INT, ' . |
|
639 | 40 | 'burnafterreading INT, ' . |
|
640 | 40 | 'meta TEXT, ' . |
|
641 | 40 | 'attachment ' . self::_getAttachmentType() . ', ' . |
|
642 | 40 | "attachmentname $dataType$after_key );" |
|
643 | ); |
||
644 | 40 | } |
|
645 | |||
646 | /** |
||
647 | * create the paste table |
||
648 | * |
||
649 | * @access private |
||
650 | * @static |
||
651 | */ |
||
652 | 40 | private static function _createCommentTable() |
|
653 | { |
||
654 | 40 | list($main_key, $after_key) = self::_getPrimaryKeyClauses(); |
|
655 | 40 | $dataType = self::_getDataType(); |
|
656 | 40 | self::$_db->exec( |
|
657 | 40 | 'CREATE TABLE ' . self::_sanitizeIdentifier('comment') . ' ( ' . |
|
658 | 40 | "dataid CHAR(16) NOT NULL$main_key, " . |
|
659 | 40 | 'pasteid CHAR(16), ' . |
|
660 | 40 | 'parentid CHAR(16), ' . |
|
661 | 40 | "data $dataType, " . |
|
662 | 40 | "nickname $dataType, " . |
|
663 | 40 | "vizhash $dataType, " . |
|
664 | 40 | "postdate INT$after_key );" |
|
665 | ); |
||
666 | 40 | self::$_db->exec( |
|
667 | 'CREATE INDEX IF NOT EXISTS comment_parent ON ' . |
||
668 | 40 | self::_sanitizeIdentifier('comment') . '(pasteid);' |
|
669 | ); |
||
670 | 40 | } |
|
671 | |||
672 | /** |
||
673 | * create the paste table |
||
674 | * |
||
675 | * @access private |
||
676 | * @static |
||
677 | */ |
||
678 | 40 | private static function _createConfigTable() |
|
679 | { |
||
680 | 40 | list($main_key, $after_key) = self::_getPrimaryKeyClauses('id'); |
|
681 | 40 | self::$_db->exec( |
|
682 | 40 | 'CREATE TABLE ' . self::_sanitizeIdentifier('config') . |
|
683 | 40 | " ( id CHAR(16) NOT NULL$main_key, value TEXT$after_key );" |
|
684 | ); |
||
685 | 40 | self::_exec( |
|
686 | 40 | 'INSERT INTO ' . self::_sanitizeIdentifier('config') . |
|
687 | 40 | ' VALUES(?,?)', |
|
688 | 40 | array('VERSION', Controller::VERSION) |
|
689 | ); |
||
690 | 40 | } |
|
691 | |||
692 | /** |
||
693 | * sanitizes identifiers |
||
694 | * |
||
695 | * @access private |
||
696 | * @static |
||
697 | * @param string $identifier |
||
698 | * @return string |
||
699 | */ |
||
700 | 69 | private static function _sanitizeIdentifier($identifier) |
|
701 | { |
||
702 | 69 | return preg_replace('/[^A-Za-z0-9_]+/', '', self::$_prefix . $identifier); |
|
703 | } |
||
704 | |||
705 | /** |
||
706 | * upgrade the database schema from an old version |
||
707 | * |
||
708 | * @access private |
||
709 | * @static |
||
710 | * @param string $oldversion |
||
711 | */ |
||
712 | 1 | private static function _upgradeDatabase($oldversion) |
|
713 | { |
||
714 | 1 | $dataType = self::_getDataType(); |
|
715 | switch ($oldversion) { |
||
716 | 1 | case '0.21': |
|
717 | // create the meta column if necessary (pre 0.21 change) |
||
718 | try { |
||
719 | 1 | self::$_db->exec('SELECT meta FROM ' . self::_sanitizeIdentifier('paste') . ' LIMIT 1;'); |
|
720 | 1 | } catch (PDOException $e) { |
|
721 | 1 | self::$_db->exec('ALTER TABLE ' . self::_sanitizeIdentifier('paste') . ' ADD COLUMN meta TEXT;'); |
|
722 | } |
||
723 | // SQLite only allows one ALTER statement at a time... |
||
724 | 1 | self::$_db->exec( |
|
725 | 1 | 'ALTER TABLE ' . self::_sanitizeIdentifier('paste') . |
|
726 | 1 | ' ADD COLUMN attachment ' . self::_getAttachmentType() . ';' |
|
727 | ); |
||
728 | 1 | self::$_db->exec( |
|
729 | 1 | 'ALTER TABLE ' . self::_sanitizeIdentifier('paste') . " ADD COLUMN attachmentname $dataType;" |
|
730 | ); |
||
731 | // SQLite doesn't support MODIFY, but it allows TEXT of similar |
||
732 | // size as BLOB, so there is no need to change it there |
||
733 | 1 | if (self::$_type !== 'sqlite') { |
|
734 | self::$_db->exec( |
||
735 | 'ALTER TABLE ' . self::_sanitizeIdentifier('paste') . |
||
736 | ' ADD PRIMARY KEY (dataid), MODIFY COLUMN data $dataType;' |
||
737 | ); |
||
738 | self::$_db->exec( |
||
739 | 'ALTER TABLE ' . self::_sanitizeIdentifier('comment') . |
||
740 | " ADD PRIMARY KEY (dataid), MODIFY COLUMN data $dataType, " . |
||
741 | "MODIFY COLUMN nickname $dataType, MODIFY COLUMN vizhash $dataType;" |
||
742 | ); |
||
743 | } else { |
||
744 | 1 | self::$_db->exec( |
|
745 | 'CREATE UNIQUE INDEX IF NOT EXISTS paste_dataid ON ' . |
||
746 | 1 | self::_sanitizeIdentifier('paste') . '(dataid);' |
|
747 | ); |
||
748 | 1 | self::$_db->exec( |
|
749 | 'CREATE UNIQUE INDEX IF NOT EXISTS comment_dataid ON ' . |
||
750 | 1 | self::_sanitizeIdentifier('comment') . '(dataid);' |
|
751 | ); |
||
752 | } |
||
753 | 1 | self::$_db->exec( |
|
754 | 'CREATE INDEX IF NOT EXISTS comment_parent ON ' . |
||
755 | 1 | self::_sanitizeIdentifier('comment') . '(pasteid);' |
|
756 | ); |
||
757 | // no break, continue with updates for 0.22 and later |
||
758 | default: |
||
759 | 1 | self::_exec( |
|
760 | 1 | 'UPDATE ' . self::_sanitizeIdentifier('config') . |
|
761 | 1 | ' SET value = ? WHERE id = ?', |
|
762 | 1 | array(Controller::VERSION, 'VERSION') |
|
763 | ); |
||
764 | } |
||
765 | 1 | } |
|
766 | } |
||
767 |