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1 | <?php |
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2 | |||
3 | //------------------------------------------------------------------------------ |
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4 | // |
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5 | // eTraxis - Records tracking web-based system |
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6 | // Copyright (C) 2005-2009 Artem Rodygin |
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7 | // |
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8 | // This program is free software: you can redistribute it and/or modify |
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9 | // it under the terms of the GNU General Public License as published by |
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10 | // the Free Software Foundation, either version 3 of the License, or |
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11 | // (at your option) any later version. |
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12 | // |
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13 | // This program is distributed in the hope that it will be useful, |
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14 | // but WITHOUT ANY WARRANTY; without even the implied warranty of |
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15 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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16 | // GNU General Public License for more details. |
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17 | // |
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18 | // You should have received a copy of the GNU General Public License |
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19 | // along with this program. If not, see <http://www.gnu.org/licenses/>. |
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20 | // |
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21 | //------------------------------------------------------------------------------ |
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22 | |||
23 | /** |
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24 | * LDAP |
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25 | * |
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26 | * This module implements several functions to work with LDAP servers. |
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27 | * |
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28 | * @package Engine |
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29 | * @subpackage LDAP |
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30 | */ |
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31 | |||
32 | /**#@+ |
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33 | * Dependency. |
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34 | */ |
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35 | require_once('../config.php'); |
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36 | require_once('../engine/debug.php'); |
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37 | require_once('../engine/utility.php'); |
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38 | /**#@-*/ |
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39 | |||
40 | //------------------------------------------------------------------------------ |
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41 | // Definitions. |
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42 | //------------------------------------------------------------------------------ |
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43 | |||
44 | /**#@+ |
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45 | * LDAP error code. |
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46 | */ |
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47 | define('LDAP_SUCCESS', 0x00); |
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48 | define('LDAP_OPERATIONS_ERROR', 0x01); |
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49 | define('LDAP_PROTOCOL_ERROR', 0x02); |
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50 | define('LDAP_TIMELIMIT_EXCEEDED', 0x03); |
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51 | define('LDAP_SIZELIMIT_EXCEEDED', 0x04); |
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52 | define('LDAP_COMPARE_FALSE', 0x05); |
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53 | define('LDAP_COMPARE_TRUE', 0x06); |
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54 | define('LDAP_AUTH_METHOD_NOT_SUPPORTED', 0x07); |
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55 | define('LDAP_STRONG_AUTH_REQUIRED', 0x08); |
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56 | define('LDAP_PARTIAL_RESULTS', 0x09); |
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57 | define('LDAP_REFERRAL', 0x0A); |
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58 | define('LDAP_ADMINLIMIT_EXCEEDED', 0x0B); |
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59 | define('LDAP_UNAVAILABLE_CRITICAL_EXTENSION', 0x0C); |
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60 | define('LDAP_CONFIDENTIALITY_REQUIRED', 0x0D); |
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61 | define('LDAP_SASL_BIND_INPROGRESS', 0x0E); |
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62 | define('LDAP_NO_SUCH_ATTRIBUTE', 0x10); |
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63 | define('LDAP_UNDEFINED_TYPE', 0x11); |
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64 | define('LDAP_INAPPROPRIATE_MATCHING', 0x12); |
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65 | define('LDAP_CONSTRAINT_VIOLATION', 0x13); |
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66 | define('LDAP_TYPE_OR_VALUE_EXISTS', 0x14); |
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67 | define('LDAP_INVALID_SYNTAX', 0x15); |
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68 | define('LDAP_NO_SUCH_OBJECT', 0x20); |
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69 | define('LDAP_ALIAS_PROBLEM', 0x21); |
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70 | define('LDAP_INVALID_DN_SYNTAX', 0x22); |
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71 | define('LDAP_IS_LEAF', 0x23); |
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72 | define('LDAP_ALIAS_DEREF_PROBLEM', 0x24); |
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73 | define('LDAP_INAPPROPRIATE_AUTH', 0x30); |
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74 | define('LDAP_INVALID_CREDENTIALS', 0x31); |
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75 | define('LDAP_INSUFFICIENT_ACCESS', 0x32); |
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76 | define('LDAP_BUSY', 0x33); |
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77 | define('LDAP_UNAVAILABLE', 0x34); |
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78 | define('LDAP_UNWILLING_TO_PERFORM', 0x35); |
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79 | define('LDAP_LOOP_DETECT', 0x36); |
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80 | define('LDAP_SORT_CONTROL_MISSING', 0x3C); |
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81 | define('LDAP_INDEX_RANGE_ERROR', 0x3D); |
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82 | define('LDAP_NAMING_VIOLATION', 0x40); |
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83 | define('LDAP_OBJECT_CLASS_VIOLATION', 0x41); |
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84 | define('LDAP_NOT_ALLOWED_ON_NONLEAF', 0x42); |
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85 | define('LDAP_NOT_ALLOWED_ON_RDN', 0x43); |
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86 | define('LDAP_ALREADY_EXISTS', 0x44); |
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87 | define('LDAP_NO_OBJECT_CLASS_MODS', 0x45); |
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88 | define('LDAP_RESULTS_TOO_LARGE', 0x46); |
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89 | define('LDAP_AFFECTS_MULTIPLE_DSAS', 0x47); |
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90 | define('LDAP_OTHER', 0x50); |
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91 | define('LDAP_SERVER_DOWN', 0x51); |
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92 | define('LDAP_LOCAL_ERROR', 0x52); |
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93 | define('LDAP_ENCODING_ERROR', 0x53); |
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94 | define('LDAP_DECODING_ERROR', 0x54); |
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95 | define('LDAP_TIMEOUT', 0x55); |
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96 | define('LDAP_AUTH_UNKNOWN', 0x56); |
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97 | define('LDAP_FILTER_ERROR', 0x57); |
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98 | define('LDAP_USER_CANCELLED', 0x58); |
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99 | define('LDAP_PARAM_ERROR', 0x59); |
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100 | define('LDAP_NO_MEMORY', 0x5A); |
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101 | define('LDAP_CONNECT_ERROR', 0x5B); |
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102 | define('LDAP_NOT_SUPPORTED', 0x5C); |
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103 | define('LDAP_CONTROL_NOT_FOUND', 0x5D); |
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104 | define('LDAP_NO_RESULTS_RETURNED', 0x5E); |
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105 | define('LDAP_MORE_RESULTS_TO_RETURN', 0x5F); |
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106 | define('LDAP_CLIENT_LOOP', 0x60); |
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107 | define('LDAP_REFERRAL_LIMIT_EXCEEDED', 0x61); |
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108 | /**#@-*/ |
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109 | |||
110 | //------------------------------------------------------------------------------ |
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111 | // Functions. |
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112 | //------------------------------------------------------------------------------ |
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113 | |||
114 | /** |
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115 | * Searches for specified username on LDAP server. |
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116 | * |
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117 | * The function searches for specified <i>username</i>. |
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118 | * If user is found, then his display name and email address are returned, otherwise NULL is returned. |
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119 | * If <i>password</i> is specified, then function also tries to authorize on LDAP server using specified <i>username</i> and <i>password</i>. |
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120 | * If authorization is failed, NULL is returned, even when user with specified <i>username</i> was successfully found. |
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121 | * |
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122 | * @param string $username Login of user to be found. |
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123 | * @param string $password Password of user. |
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124 | * @return array The array which contains two items: first item is display name of user, second one - his email. |
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125 | * If user was not found, or cannot be authorized with specified password, then NULL is returned. |
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126 | */ |
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127 | function ldap_finduser ($username, $password = NULL) |
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128 | { |
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129 | debug_write_log(DEBUG_TRACE, '[ldap_finduser]'); |
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130 | debug_write_log(DEBUG_DUMP, '[ldap_finduser] $username = ' . $username); |
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131 | |||
132 | $link = @ldap_connect(LDAP_HOST, LDAP_PORT); |
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133 | |||
134 | if (!$link) |
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135 | { |
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136 | debug_write_log(DEBUG_ERROR, '[ldap_finduser] ldap_connect() error.'); |
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137 | return NULL; |
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138 | } |
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139 | |||
140 | $retval = NULL; |
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141 | |||
142 | if (!@ldap_set_option($link, LDAP_OPT_PROTOCOL_VERSION, 3)) |
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143 | { |
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144 | debug_write_log(DEBUG_ERROR, '[ldap_finduser] ldap_set_option(LDAP_OPT_PROTOCOL_VERSION) error: ' . ldap_err2str(ldap_errno($link))); |
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145 | } |
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146 | View Code Duplication | elseif (!@ldap_set_option($link, LDAP_OPT_REFERRALS, 0)) |
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147 | { |
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148 | debug_write_log(DEBUG_ERROR, '[ldap_finduser] ldap_set_option(LDAP_OPT_REFERRALS) error: ' . ldap_err2str(ldap_errno($link))); |
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149 | } |
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150 | View Code Duplication | elseif (LDAP_USE_TLS && !@ldap_start_tls($link)) |
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151 | { |
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152 | debug_write_log(DEBUG_ERROR, '[ldap_finduser] ldap_start_tls() error: ' . ldap_err2str(ldap_errno($link))); |
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153 | } |
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154 | View Code Duplication | elseif (!@ldap_bind($link, LDAP_USERNAME, LDAP_PASSWORD)) |
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155 | { |
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156 | debug_write_log(DEBUG_WARNING, '[ldap_finduser] ldap_bind(anonymous) error: ' . ldap_err2str(ldap_errno($link))); |
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157 | } |
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158 | else |
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159 | { |
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160 | $attrs = array('dn', LDAP_ATTR_FULLNAME, LDAP_ATTR_EMAIL); |
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161 | $basedn = mb_split(';', LDAP_BASEDN); |
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162 | |||
163 | for ($i = 0; $i < count($basedn) && is_null($retval); $i++) |
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164 | { |
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165 | debug_write_log(DEBUG_DUMP, '[ldap_finduser] $basedn = ' . $basedn[$i]); |
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166 | |||
167 | $result = @ldap_search($link, $basedn[$i], sprintf("(%s=%s)", LDAP_ATTR_LOGIN, $username), $attrs); |
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168 | |||
169 | if (!$result) |
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170 | { |
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171 | debug_write_log(DEBUG_WARNING, '[ldap_finduser] ldap_search() error: ' . ldap_err2str(ldap_errno($link))); |
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172 | } |
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173 | else |
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174 | { |
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175 | $entries = @ldap_get_entries($link, $result); |
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176 | |||
177 | if (!$entries || count($entries) <= 1) |
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178 | { |
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179 | debug_write_log(DEBUG_WARNING, '[ldap_finduser] ldap_get_entries() error: ' . ldap_err2str(ldap_errno($link))); |
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180 | } |
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181 | elseif (!is_null($password) && !@ldap_bind($link, $entries[0]['dn'], $password)) |
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182 | { |
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183 | debug_write_log(DEBUG_WARNING, '[ldap_finduser] ldap_bind(username) error: ' . ldap_err2str(ldap_errno($link))); |
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184 | } |
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185 | else |
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186 | { |
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187 | if (empty($entries[0][LDAP_ATTR_FULLNAME][0]) || |
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188 | empty($entries[0][LDAP_ATTR_EMAIL ][0])) |
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189 | { |
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190 | debug_write_log(DEBUG_NOTICE, '[ldap_finduser] Found entries are empty.'); |
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191 | } |
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192 | else |
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193 | { |
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194 | debug_write_log(DEBUG_DUMP, '[ldap_finduser] LDAP(displayname) = ' . $entries[0][LDAP_ATTR_FULLNAME][0]); |
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195 | debug_write_log(DEBUG_DUMP, '[ldap_finduser] LDAP(mail) = ' . $entries[0][LDAP_ATTR_EMAIL ][0]); |
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196 | |||
197 | $retval = array($entries[0][LDAP_ATTR_FULLNAME][0], |
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198 | $entries[0][LDAP_ATTR_EMAIL ][0]); |
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199 | } |
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200 | } |
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201 | } |
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202 | } |
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203 | } |
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204 | |||
205 | ldap_close($link); |
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206 | |||
207 | return $retval; |
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208 | } |
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209 | |||
210 | /** |
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211 | * Searches for all users of LDAP server and returns array with all findings. |
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212 | * |
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213 | * If login, display name, or email of some LDAP user is empty, it will not be returned. |
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214 | * |
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215 | * @return array Array, where each item is associative array with two items. |
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216 | * First item is user's login and accessable via "username" index. |
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217 | * Second item is user's display name and accessable via "fullname" index. |
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218 | */ |
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219 | function ldap_findallusers () |
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220 | { |
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221 | debug_write_log(DEBUG_TRACE, '[ldap_findallusers]'); |
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222 | |||
223 | $link = @ldap_connect(LDAP_HOST, LDAP_PORT); |
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224 | |||
225 | if (!$link) |
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226 | { |
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227 | debug_write_log(DEBUG_ERROR, '[ldap_findallusers] ldap_connect() error.'); |
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228 | return NULL; |
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229 | } |
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230 | |||
231 | $retval = array(); |
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232 | |||
233 | if (!@ldap_set_option($link, LDAP_OPT_PROTOCOL_VERSION, 3)) |
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234 | { |
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235 | debug_write_log(DEBUG_ERROR, '[ldap_findallusers] ldap_set_option(LDAP_OPT_PROTOCOL_VERSION) error: ' . ldap_err2str(ldap_errno($link))); |
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236 | } |
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237 | View Code Duplication | elseif (!@ldap_set_option($link, LDAP_OPT_REFERRALS, 0)) |
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238 | { |
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239 | debug_write_log(DEBUG_ERROR, '[ldap_findallusers] ldap_set_option(LDAP_OPT_REFERRALS) error: ' . ldap_err2str(ldap_errno($link))); |
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240 | } |
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241 | View Code Duplication | elseif (LDAP_USE_TLS && !@ldap_start_tls($link)) |
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242 | { |
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243 | debug_write_log(DEBUG_ERROR, '[ldap_finduser] ldap_start_tls() error: ' . ldap_err2str(ldap_errno($link))); |
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244 | } |
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245 | View Code Duplication | elseif (!@ldap_bind($link, LDAP_USERNAME, LDAP_PASSWORD)) |
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246 | { |
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247 | debug_write_log(DEBUG_WARNING, '[ldap_findallusers] ldap_bind(anonymous) error: ' . ldap_err2str(ldap_errno($link))); |
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248 | } |
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249 | else |
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250 | { |
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251 | $attrs = array(LDAP_ATTR_LOGIN, LDAP_ATTR_FULLNAME, LDAP_ATTR_EMAIL); |
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252 | $basedn = mb_split(';', LDAP_BASEDN); |
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253 | |||
254 | for ($i = 0; $i < count($basedn); $i++) |
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255 | { |
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256 | debug_write_log(DEBUG_DUMP, '[ldap_findallusers] $basedn = ' . $basedn[$i]); |
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257 | |||
258 | $result = @ldap_search($link, $basedn[$i], sprintf("(&(objectcategory=person)(objectclass=user)(%s=*))", LDAP_ATTR_LOGIN), $attrs); |
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259 | |||
260 | if (!$result) |
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261 | { |
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262 | debug_write_log(DEBUG_WARNING, '[ldap_findallusers] ldap_search() error: ' . ldap_err2str(ldap_errno($link))); |
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263 | } |
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264 | else |
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265 | { |
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266 | $entries = @ldap_get_entries($link, $result); |
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267 | |||
268 | if (!$entries || count($entries) <= 1) |
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269 | { |
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270 | debug_write_log(DEBUG_WARNING, '[ldap_findallusers] ldap_get_entries() error: ' . ldap_err2str(ldap_errno($link))); |
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271 | } |
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272 | else |
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273 | { |
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274 | for ($i = 0; $i < count($entries) - 1; $i++) |
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275 | { |
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276 | if (!empty($entries[$i][LDAP_ATTR_LOGIN ][0]) && |
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277 | !empty($entries[$i][LDAP_ATTR_FULLNAME][0]) && |
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278 | !empty($entries[$i][LDAP_ATTR_EMAIL ][0])) |
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279 | { |
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280 | $entry = array('username' => $entries[$i][LDAP_ATTR_LOGIN ][0], |
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281 | 'fullname' => $entries[$i][LDAP_ATTR_FULLNAME][0]); |
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282 | |||
283 | array_push($retval, $entry); |
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284 | } |
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285 | } |
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286 | } |
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287 | } |
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288 | } |
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289 | } |
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290 | |||
291 | ldap_close($link); |
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292 | |||
293 | return $retval; |
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294 | } |
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295 | |||
296 | ?> |
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297 |
Using a closing tag in PHP files that only contain PHP code is not recommended as you might accidentally add whitespace after the closing tag which would then be output by PHP. This can cause severe problems, for example headers cannot be sent anymore.
A simple precaution is to leave off the closing tag as it is not required, and it also has no negative effects whatsoever.