nextcloud /
server
| Total Complexity | 53 |
| Total Lines | 357 |
| Duplicated Lines | 0 % |
| Changes | 0 | ||
Complex classes like LDAP often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use LDAP, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 35 | class LDAP implements ILDAPWrapper { |
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| 36 | protected $curFunc = ''; |
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| 37 | protected $curArgs = array(); |
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| 38 | |||
| 39 | /** |
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| 40 | * @param resource $link |
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| 41 | * @param string $dn |
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| 42 | * @param string $password |
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| 43 | * @return bool|mixed |
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| 44 | */ |
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| 45 | public function bind($link, $dn, $password) { |
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| 46 | return $this->invokeLDAPMethod('bind', $link, $dn, $password); |
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| 47 | } |
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| 48 | |||
| 49 | /** |
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| 50 | * @param string $host |
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| 51 | * @param string $port |
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| 52 | * @return mixed |
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| 53 | */ |
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| 54 | public function connect($host, $port) { |
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| 63 | } |
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| 64 | |||
| 65 | /** |
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| 66 | * @param resource $link |
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| 67 | * @param resource $result |
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| 68 | * @param string $cookie |
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| 69 | * @return bool|LDAP |
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| 70 | */ |
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| 71 | public function controlPagedResultResponse($link, $result, &$cookie) { |
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| 72 | $this->preFunctionCall('ldap_control_paged_result_response', |
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| 73 | array($link, $result, $cookie)); |
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| 74 | $result = ldap_control_paged_result_response($link, $result, $cookie); |
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| 75 | $this->postFunctionCall(); |
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| 76 | |||
| 77 | return $result; |
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| 78 | } |
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| 79 | |||
| 80 | /** |
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| 81 | * @param LDAP $link |
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| 82 | * @param int $pageSize |
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| 83 | * @param bool $isCritical |
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| 84 | * @param string $cookie |
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| 85 | * @return mixed|true |
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| 86 | */ |
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| 87 | public function controlPagedResult($link, $pageSize, $isCritical, $cookie) { |
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| 88 | return $this->invokeLDAPMethod('control_paged_result', $link, $pageSize, |
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| 89 | $isCritical, $cookie); |
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| 90 | } |
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| 91 | |||
| 92 | /** |
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| 93 | * @param LDAP $link |
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| 94 | * @param LDAP $result |
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| 95 | * @return mixed |
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| 96 | */ |
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| 97 | public function countEntries($link, $result) { |
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| 98 | return $this->invokeLDAPMethod('count_entries', $link, $result); |
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| 99 | } |
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| 100 | |||
| 101 | /** |
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| 102 | * @param LDAP $link |
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| 103 | * @return integer |
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| 104 | */ |
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| 105 | public function errno($link) { |
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| 106 | return $this->invokeLDAPMethod('errno', $link); |
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| 107 | } |
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| 108 | |||
| 109 | /** |
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| 110 | * @param LDAP $link |
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| 111 | * @return string |
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| 112 | */ |
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| 113 | public function error($link) { |
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| 114 | return $this->invokeLDAPMethod('error', $link); |
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| 115 | } |
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| 116 | |||
| 117 | /** |
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| 118 | * Splits DN into its component parts |
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| 119 | * @param string $dn |
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| 120 | * @param int @withAttrib |
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|
Documentation
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| 121 | * @return array|false |
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| 122 | * @link http://www.php.net/manual/en/function.ldap-explode-dn.php |
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| 123 | */ |
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| 124 | public function explodeDN($dn, $withAttrib) { |
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| 125 | return $this->invokeLDAPMethod('explode_dn', $dn, $withAttrib); |
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| 126 | } |
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| 127 | |||
| 128 | /** |
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| 129 | * @param LDAP $link |
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| 130 | * @param LDAP $result |
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| 131 | * @return mixed |
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| 132 | */ |
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| 133 | public function firstEntry($link, $result) { |
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| 134 | return $this->invokeLDAPMethod('first_entry', $link, $result); |
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| 135 | } |
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| 136 | |||
| 137 | /** |
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| 138 | * @param LDAP $link |
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| 139 | * @param LDAP $result |
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| 140 | * @return array|mixed |
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| 141 | */ |
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| 142 | public function getAttributes($link, $result) { |
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| 143 | return $this->invokeLDAPMethod('get_attributes', $link, $result); |
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| 144 | } |
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| 145 | |||
| 146 | /** |
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| 147 | * @param LDAP $link |
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| 148 | * @param LDAP $result |
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| 149 | * @return mixed|string |
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| 150 | */ |
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| 151 | public function getDN($link, $result) { |
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| 153 | } |
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| 154 | |||
| 155 | /** |
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| 156 | * @param LDAP $link |
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| 157 | * @param LDAP $result |
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| 158 | * @return array|mixed |
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| 159 | */ |
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| 160 | public function getEntries($link, $result) { |
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| 161 | return $this->invokeLDAPMethod('get_entries', $link, $result); |
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| 162 | } |
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| 163 | |||
| 164 | /** |
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| 165 | * @param LDAP $link |
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| 166 | * @param resource $result |
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| 167 | * @return mixed |
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| 168 | */ |
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| 169 | public function nextEntry($link, $result) { |
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| 170 | return $this->invokeLDAPMethod('next_entry', $link, $result); |
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| 171 | } |
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| 172 | |||
| 173 | /** |
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| 174 | * @param LDAP $link |
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| 175 | * @param string $baseDN |
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| 176 | * @param string $filter |
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| 177 | * @param array $attr |
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| 178 | * @return mixed |
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| 179 | */ |
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| 180 | public function read($link, $baseDN, $filter, $attr) { |
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| 182 | } |
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| 183 | |||
| 184 | /** |
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| 185 | * @param LDAP $link |
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| 186 | * @param string $baseDN |
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| 187 | * @param string $filter |
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| 188 | * @param array $attr |
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| 189 | * @param int $attrsOnly |
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| 190 | * @param int $limit |
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| 191 | * @return mixed |
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| 192 | * @throws \Exception |
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| 193 | */ |
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| 194 | public function search($link, $baseDN, $filter, $attr, $attrsOnly = 0, $limit = 0) { |
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| 209 | } |
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| 210 | } |
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| 211 | |||
| 212 | /** |
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| 213 | * @param LDAP $link |
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| 214 | * @param string $userDN |
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| 215 | * @param string $password |
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| 216 | * @return bool |
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| 217 | */ |
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| 218 | public function modReplace($link, $userDN, $password) { |
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| 220 | } |
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| 221 | |||
| 222 | /** |
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| 223 | * @param LDAP $link |
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| 224 | * @param string $userDN |
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| 225 | * @param string $oldPassword |
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| 226 | * @param string $password |
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| 227 | * @return bool |
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| 228 | */ |
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| 229 | public function exopPasswd($link, $userDN, $oldPassword, $password) { |
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| 231 | } |
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| 232 | |||
| 233 | /** |
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| 234 | * @param LDAP $link |
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| 235 | * @param string $option |
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| 236 | * @param int $value |
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| 237 | * @return bool|mixed |
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| 238 | */ |
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| 239 | public function setOption($link, $option, $value) { |
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| 240 | return $this->invokeLDAPMethod('set_option', $link, $option, $value); |
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| 241 | } |
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| 242 | |||
| 243 | /** |
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| 244 | * @param LDAP $link |
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| 245 | * @return mixed|true |
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| 246 | */ |
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| 247 | public function startTls($link) { |
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| 248 | return $this->invokeLDAPMethod('start_tls', $link); |
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| 249 | } |
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| 250 | |||
| 251 | /** |
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| 252 | * @param resource $link |
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| 253 | * @return bool|mixed |
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| 254 | */ |
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| 255 | public function unbind($link) { |
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| 256 | return $this->invokeLDAPMethod('unbind', $link); |
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| 257 | } |
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| 258 | |||
| 259 | /** |
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| 260 | * Checks whether the server supports LDAP |
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| 261 | * @return boolean if it the case, false otherwise |
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| 262 | * */ |
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| 263 | public function areLDAPFunctionsAvailable() { |
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| 264 | return function_exists('ldap_connect'); |
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| 265 | } |
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| 266 | |||
| 267 | /** |
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| 268 | * Checks whether the submitted parameter is a resource |
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| 269 | * @param Resource $resource the resource variable to check |
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| 270 | * @return bool true if it is a resource, false otherwise |
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| 271 | */ |
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| 272 | public function isResource($resource) { |
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| 273 | return is_resource($resource); |
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| 274 | } |
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| 275 | |||
| 276 | /** |
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| 277 | * Checks whether the return value from LDAP is wrong or not. |
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| 278 | * |
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| 279 | * When using ldap_search we provide an array, in case multiple bases are |
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| 280 | * configured. Thus, we need to check the array elements. |
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| 281 | * |
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| 282 | * @param $result |
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| 283 | * @return bool |
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| 284 | */ |
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| 285 | protected function isResultFalse($result) { |
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| 286 | if($result === false) { |
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| 287 | return true; |
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| 288 | } |
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| 289 | |||
| 290 | if($this->curFunc === 'ldap_search' && is_array($result)) { |
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| 291 | foreach ($result as $singleResult) { |
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| 292 | if($singleResult === false) { |
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| 293 | return true; |
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| 294 | } |
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| 295 | } |
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| 296 | } |
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| 297 | |||
| 298 | return false; |
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| 299 | } |
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| 300 | |||
| 301 | /** |
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| 302 | * @return mixed |
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| 303 | */ |
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| 304 | protected function invokeLDAPMethod() { |
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| 305 | $arguments = func_get_args(); |
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| 306 | $func = 'ldap_' . array_shift($arguments); |
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| 307 | if(function_exists($func)) { |
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| 308 | $this->preFunctionCall($func, $arguments); |
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| 309 | $result = call_user_func_array($func, $arguments); |
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| 310 | if ($this->isResultFalse($result)) { |
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| 311 | $this->postFunctionCall(); |
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| 312 | } |
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| 313 | return $result; |
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| 314 | } |
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| 315 | return null; |
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| 316 | } |
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| 317 | |||
| 318 | /** |
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| 319 | * @param string $functionName |
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| 320 | * @param array $args |
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| 321 | */ |
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| 322 | private function preFunctionCall($functionName, $args) { |
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| 323 | $this->curFunc = $functionName; |
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| 324 | $this->curArgs = $args; |
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| 325 | } |
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| 326 | |||
| 327 | /** |
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| 328 | * Analyzes the returned LDAP error and acts accordingly if not 0 |
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| 329 | * |
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| 330 | * @param resource $resource the LDAP Connection resource |
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| 331 | * @throws ConstraintViolationException |
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| 332 | * @throws ServerNotAvailableException |
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| 333 | * @throws \Exception |
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| 334 | */ |
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| 335 | private function processLDAPError($resource) { |
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| 336 | $errorCode = ldap_errno($resource); |
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| 337 | if($errorCode === 0) { |
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| 338 | return; |
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| 339 | } |
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| 340 | $errorMsg = ldap_error($resource); |
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| 341 | |||
| 342 | if($this->curFunc === 'ldap_get_entries' |
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| 343 | && $errorCode === -4) { |
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| 344 | } else if ($errorCode === 32) { |
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| 345 | //for now |
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| 346 | } else if ($errorCode === 10) { |
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| 347 | //referrals, we switch them off, but then there is AD :) |
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| 348 | } else if ($errorCode === -1) { |
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| 349 | throw new ServerNotAvailableException('Lost connection to LDAP server.'); |
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| 350 | } else if ($errorCode === 52) { |
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| 351 | throw new ServerNotAvailableException('LDAP server is shutting down.'); |
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| 352 | } else if ($errorCode === 48) { |
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| 353 | throw new \Exception('LDAP authentication method rejected', $errorCode); |
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| 354 | } else if ($errorCode === 1) { |
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| 355 | throw new \Exception('LDAP Operations error', $errorCode); |
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| 356 | } else if ($errorCode === 19) { |
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| 357 | ldap_get_option($this->curArgs[0], LDAP_OPT_ERROR_STRING, $extended_error); |
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| 358 | throw new ConstraintViolationException(!empty($extended_error)?$extended_error:$errorMsg, $errorCode); |
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| 359 | } else { |
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| 360 | \OC::$server->getLogger()->debug('LDAP error {message} ({code}) after calling {func}', [ |
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| 361 | 'app' => 'user_ldap', |
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| 362 | 'message' => $errorMsg, |
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| 363 | 'code' => $errorCode, |
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| 364 | 'func' => $this->curFunc, |
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| 365 | ]); |
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| 366 | } |
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| 367 | } |
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| 368 | |||
| 369 | /** |
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| 370 | * Called after an ldap method is run to act on LDAP error if necessary |
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| 371 | * @throw \Exception |
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| 372 | */ |
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| 373 | private function postFunctionCall() { |
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| 392 | } |
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| 393 | } |
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| 394 |
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