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0
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1 <?php
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2
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3 /**
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4 * LDAP Password Driver
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5 *
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6 * Driver for passwords stored in LDAP
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7 * This driver use the PEAR Net_LDAP2 class (http://pear.php.net/package/Net_LDAP2).
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8 *
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9 * @version 2.0
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10 * @author Edouard MOREAU <edouard.moreau@ensma.fr>
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11 *
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12 * method hashPassword based on code from the phpLDAPadmin development team (http://phpldapadmin.sourceforge.net/).
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13 * method randomSalt based on code from the phpLDAPadmin development team (http://phpldapadmin.sourceforge.net/).
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14 *
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15 * Copyright (C) 2005-2014, The Roundcube Dev Team
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16 *
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17 * This program is free software: you can redistribute it and/or modify
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18 * it under the terms of the GNU General Public License as published by
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19 * the Free Software Foundation, either version 3 of the License, or
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20 * (at your option) any later version.
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21 *
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22 * This program is distributed in the hope that it will be useful,
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23 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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24 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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25 * GNU General Public License for more details.
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26 *
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27 * You should have received a copy of the GNU General Public License
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28 * along with this program. If not, see http://www.gnu.org/licenses/.
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29 */
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30
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31 class rcube_ldap_password
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32 {
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33 public function save($curpass, $passwd)
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34 {
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35 $rcmail = rcmail::get_instance();
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36 require_once 'Net/LDAP2.php';
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37
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38 // Building user DN
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39 if ($userDN = $rcmail->config->get('password_ldap_userDN_mask')) {
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40 $userDN = self::substitute_vars($userDN);
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41 }
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42 else {
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43 $userDN = $this->search_userdn($rcmail);
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44 }
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45
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46 if (empty($userDN)) {
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47 return PASSWORD_CONNECT_ERROR;
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48 }
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49
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50 // Connection Method
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51 switch($rcmail->config->get('password_ldap_method')) {
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52 case 'admin':
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53 $binddn = $rcmail->config->get('password_ldap_adminDN');
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54 $bindpw = $rcmail->config->get('password_ldap_adminPW');
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55 break;
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56 case 'user':
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57 default:
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58 $binddn = $userDN;
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59 $bindpw = $curpass;
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60 break;
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61 }
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62
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63 // Configuration array
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64 $ldapConfig = array (
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65 'binddn' => $binddn,
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66 'bindpw' => $bindpw,
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67 'basedn' => $rcmail->config->get('password_ldap_basedn'),
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68 'host' => $rcmail->config->get('password_ldap_host', 'localhost'),
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69 'port' => $rcmail->config->get('password_ldap_port', '389'),
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70 'starttls' => $rcmail->config->get('password_ldap_starttls'),
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71 'version' => $rcmail->config->get('password_ldap_version', '3'),
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72 );
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73
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74 // Connecting using the configuration array
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75 $ldap = Net_LDAP2::connect($ldapConfig);
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76
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77 // Checking for connection error
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78 if (is_a($ldap, 'PEAR_Error')) {
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79 return PASSWORD_CONNECT_ERROR;
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80 }
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81
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82 $force = $rcmail->config->get('password_ldap_force_replace', true);
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83 $pwattr = $rcmail->config->get('password_ldap_pwattr', 'userPassword');
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84 $lchattr = $rcmail->config->get('password_ldap_lchattr');
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85 $smbpwattr = $rcmail->config->get('password_ldap_samba_pwattr');
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86 $smblchattr = $rcmail->config->get('password_ldap_samba_lchattr');
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87 $samba = $rcmail->config->get('password_ldap_samba');
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88 $encodage = $rcmail->config->get('password_ldap_encodage', 'crypt');
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89
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90 // Support multiple userPassword values where desired.
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91 // multiple encodings can be specified separated by '+' (e.g. "cram-md5+ssha")
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92 $encodages = explode('+', $encodage);
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93 $crypted_pass = array();
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94
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95 foreach ($encodages as $enc) {
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96 if ($cpw = password::hash_password($passwd, $enc)) {
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97 $crypted_pass[] = $cpw;
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98 }
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99 }
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100
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101 // Support password_ldap_samba option for backward compat.
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102 if ($samba && !$smbpwattr) {
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103 $smbpwattr = 'sambaNTPassword';
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104 $smblchattr = 'sambaPwdLastSet';
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105 }
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106
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107 // Crypt new password
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108 if (empty($crypted_pass)) {
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109 return PASSWORD_CRYPT_ERROR;
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110 }
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111
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112 // Crypt new samba password
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113 if ($smbpwattr && !($samba_pass = password::hash_password($passwd, 'samba'))) {
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114 return PASSWORD_CRYPT_ERROR;
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115 }
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116
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117 // Writing new crypted password to LDAP
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118 $userEntry = $ldap->getEntry($userDN);
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119 if (Net_LDAP2::isError($userEntry)) {
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120 return PASSWORD_CONNECT_ERROR;
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121 }
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122
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123 if (!$userEntry->replace(array($pwattr => $crypted_pass), $force)) {
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124 return PASSWORD_CONNECT_ERROR;
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125 }
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126
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127 // Updating PasswordLastChange Attribute if desired
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128 if ($lchattr) {
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129 $current_day = (int)(time() / 86400);
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130 if (!$userEntry->replace(array($lchattr => $current_day), $force)) {
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131 return PASSWORD_CONNECT_ERROR;
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132 }
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133 }
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134
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135 // Update Samba password and last change fields
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136 if ($smbpwattr) {
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137 $userEntry->replace(array($smbpwattr => $samba_pass), $force);
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138 }
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139 // Update Samba password last change field
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140 if ($smblchattr) {
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141 $userEntry->replace(array($smblchattr => time()), $force);
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142 }
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143
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144 if (Net_LDAP2::isError($userEntry->update())) {
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145 return PASSWORD_CONNECT_ERROR;
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146 }
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147
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148 // All done, no error
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149 return PASSWORD_SUCCESS;
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150 }
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151
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152 /**
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153 * Bind with searchDN and searchPW and search for the user's DN.
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154 * Use search_base and search_filter defined in config file.
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155 * Return the found DN.
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156 */
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157 function search_userdn($rcmail)
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158 {
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159 $binddn = $rcmail->config->get('password_ldap_searchDN');
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160 $bindpw = $rcmail->config->get('password_ldap_searchPW');
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161
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162 $ldapConfig = array (
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163 'basedn' => $rcmail->config->get('password_ldap_basedn'),
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164 'host' => $rcmail->config->get('password_ldap_host', 'localhost'),
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165 'port' => $rcmail->config->get('password_ldap_port', '389'),
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166 'starttls' => $rcmail->config->get('password_ldap_starttls'),
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167 'version' => $rcmail->config->get('password_ldap_version', '3'),
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168 );
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169
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170 // allow anonymous searches
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171 if (!empty($binddn)) {
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172 $ldapConfig['binddn'] = $binddn;
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173 $ldapConfig['bindpw'] = $bindpw;
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174 }
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175
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176 $ldap = Net_LDAP2::connect($ldapConfig);
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177
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178 if (is_a($ldap, 'PEAR_Error')) {
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179 return '';
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180 }
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181
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182 $base = self::substitute_vars($rcmail->config->get('password_ldap_search_base'));
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183 $filter = self::substitute_vars($rcmail->config->get('password_ldap_search_filter'));
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184 $options = array (
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185 'scope' => 'sub',
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186 'attributes' => array(),
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187 );
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188
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189 $result = $ldap->search($base, $filter, $options);
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190 if (is_a($result, 'PEAR_Error') || ($result->count() != 1)) {
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191 $ldap->done();
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192 return '';
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193 }
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194 $userDN = $result->current()->dn();
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195 $ldap->done();
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196
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197 return $userDN;
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198 }
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199
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200 /**
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201 * Substitute %login, %name, %domain, %dc in $str
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202 * See plugin config for details
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203 */
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204 static function substitute_vars($str)
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205 {
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206 $str = str_replace('%login', $_SESSION['username'], $str);
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207 $str = str_replace('%l', $_SESSION['username'], $str);
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208
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209 $parts = explode('@', $_SESSION['username']);
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210
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211 if (count($parts) == 2) {
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212 $dc = 'dc='.strtr($parts[1], array('.' => ',dc=')); // hierarchal domain string
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213
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214 $str = str_replace('%name', $parts[0], $str);
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215 $str = str_replace('%n', $parts[0], $str);
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216 $str = str_replace('%dc', $dc, $str);
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217 $str = str_replace('%domain', $parts[1], $str);
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218 $str = str_replace('%d', $parts[1], $str);
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219 }
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220
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221 return $str;
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222 }
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223 }
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