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1 | <?php |
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2 | /** |
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3 | * Class LDAPAuthenticator |
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4 | * |
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5 | * Authenticate a user against LDAP, without the single sign-on component. |
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6 | * |
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7 | * See SAMLAuthenticator for further information. |
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8 | */ |
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9 | class LDAPAuthenticator extends Authenticator |
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10 | { |
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11 | /** |
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12 | * @var string |
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13 | */ |
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14 | private $name = 'LDAP'; |
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15 | |||
16 | /** |
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17 | * Set to 'yes' to indicate if this module should look up usernames in LDAP by matching the email addresses. |
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18 | * |
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19 | * CAVEAT #1: only set to 'yes' for systems that enforce email uniqueness. |
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20 | * Otherwise only the first LDAP user with matching email will be accessible. |
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21 | * |
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22 | * CAVEAT #2: this is untested for systems that use LDAP with principal style usernames (i.e. [email protected]). |
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23 | * The system will misunderstand emails for usernames with uncertain outcome. |
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24 | * |
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25 | * @var string 'no' or 'yes' |
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26 | */ |
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27 | private static $allow_email_login = 'no'; |
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28 | |||
29 | /** |
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30 | * Set to 'yes' to fallback login attempts to {@link $fallback_authenticator}. |
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31 | * This will occur if LDAP fails to authenticate the user. |
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32 | * |
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33 | * @var string 'no' or 'yes' |
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34 | */ |
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35 | private static $fallback_authenticator = 'no'; |
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36 | |||
37 | /** |
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38 | * The class of {@link Authenticator} to use as the fallback authenticator. |
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39 | * |
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40 | * @var string |
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41 | */ |
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42 | private static $fallback_authenticator_class = 'MemberAuthenticator'; |
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43 | |||
44 | /** |
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45 | * @return string |
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46 | */ |
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47 | public static function get_name() |
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48 | { |
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49 | return Config::inst()->get('LDAPAuthenticator', 'name'); |
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50 | } |
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51 | |||
52 | /** |
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53 | * @param Controller $controller |
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54 | * @return LDAPLoginForm |
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55 | */ |
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56 | public static function get_login_form(Controller $controller) |
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57 | { |
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58 | return new LDAPLoginForm($controller, 'LoginForm'); |
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59 | } |
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60 | |||
61 | /** |
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62 | * Performs the login, but will also create and sync the Member record on-the-fly, if not found. |
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63 | * |
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64 | * @param array $data |
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65 | * @param Form $form |
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66 | * @return bool|Member|void |
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67 | * @throws SS_HTTPResponse_Exception |
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68 | */ |
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69 | public static function authenticate($data, Form $form = null) |
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70 | { |
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71 | $service = Injector::inst()->get('LDAPService'); |
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72 | $login = trim($data['Login']); |
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73 | if (Email::validEmailAddress($login)) { |
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74 | if (Config::inst()->get('LDAPAuthenticator', 'allow_email_login')!='yes') { |
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75 | $form->sessionMessage( |
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76 | _t( |
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77 | 'LDAPAuthenticator.PLEASEUSEUSERNAME', |
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78 | 'Please enter your username instead of your email to log in.' |
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79 | ), |
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80 | 'bad' |
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81 | ); |
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82 | return; |
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83 | } |
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84 | |||
85 | $username = $service->getUsernameByEmail($login); |
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86 | |||
87 | // No user found with this email. |
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88 | View Code Duplication | if (!$username) { |
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0 ignored issues
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89 | if (Config::inst()->get('LDAPAuthenticator', 'fallback_authenticator') === 'yes') { |
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90 | $fallbackMember = self::fallback_authenticate($data, $form); |
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91 | if ($fallbackMember) { |
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92 | return $fallbackMember; |
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93 | } |
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94 | } |
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95 | |||
96 | $form->sessionMessage(_t('LDAPAuthenticator.INVALIDCREDENTIALS', 'Invalid credentials'), 'bad'); |
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97 | return; |
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98 | } |
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99 | } else { |
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100 | $username = $login; |
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101 | } |
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102 | |||
103 | $result = $service->authenticate($username, $data['Password']); |
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104 | $success = $result['success'] === true; |
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105 | View Code Duplication | if (!$success) { |
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0 ignored issues
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show
This code seems to be duplicated across your project.
Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation. You can also find more detailed suggestions in the “Code” section of your repository.
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106 | if (Config::inst()->get('LDAPAuthenticator', 'fallback_authenticator') === 'yes') { |
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107 | $fallbackMember = self::fallback_authenticate($data, $form); |
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108 | if ($fallbackMember) { |
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109 | return $fallbackMember; |
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110 | } |
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111 | } |
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112 | |||
113 | if ($form) { |
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114 | $form->sessionMessage($result['message'], 'bad'); |
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115 | } |
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116 | return; |
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117 | } |
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118 | |||
119 | $data = $service->getUserByUsername($result['identity']); |
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120 | if (!$data) { |
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121 | if ($form) { |
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122 | $form->sessionMessage( |
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123 | _t('LDAPAuthenticator.PROBLEMFINDINGDATA', 'There was a problem retrieving your user data'), |
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124 | 'bad' |
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125 | ); |
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126 | } |
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127 | return; |
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128 | } |
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129 | |||
130 | // LDAPMemberExtension::memberLoggedIn() will update any other AD attributes mapped to Member fields |
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131 | $member = Member::get()->filter('GUID', $data['objectguid'])->limit(1)->first(); |
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132 | View Code Duplication | if (!($member && $member->exists())) { |
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0 ignored issues
–
show
This code seems to be duplicated across your project.
Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation. You can also find more detailed suggestions in the “Code” section of your repository.
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133 | $member = new Member(); |
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134 | $member->GUID = $data['objectguid']; |
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135 | } |
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136 | |||
137 | // Update the users from LDAP so we are sure that the email is correct. |
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138 | // This will also write the Member record. |
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139 | $service->updateMemberFromLDAP($member); |
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140 | |||
141 | Session::clear('BackURL'); |
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142 | |||
143 | return $member; |
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144 | } |
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145 | |||
146 | /** |
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147 | * Try to authenticate using the fallback authenticator. |
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148 | * |
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149 | * @param array $data |
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150 | * @param null|Form $form |
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151 | * @return null|Member |
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152 | */ |
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153 | protected static function fallback_authenticate($data, Form $form = null) |
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154 | { |
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155 | return call_user_func( |
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156 | [Config::inst()->get('LDAPAuthenticator', 'fallback_authenticator_class'), 'authenticate'], |
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157 | array_merge($data, ['Email' => $data['Login']]), |
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158 | $form |
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159 | ); |
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160 | } |
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161 | |||
162 | } |
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163 |
Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation.
You can also find more detailed suggestions in the “Code” section of your repository.