1 | <?php |
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2 | global $conf; |
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3 | class Ldap { |
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4 | var $cnx; |
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5 | var $config; |
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6 | |
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7 | // for debug |
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8 | public function write_log($message){ |
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9 | @file_put_contents('/var/log/ldap_login.log',$message."\n",FILE_APPEND); |
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10 | } |
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11 | |
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12 | /** |
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13 | * check ldap configuration |
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14 | * |
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15 | * Dans le cas ou l'acces au ldap est anonyme il faut impérativement faire une recherche |
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16 | * pour tester la connection. |
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17 | * |
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18 | * When OpenLDAP 2.x.x is used, ldap_connect() will always return a resource as it does not actually connect |
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19 | * but just initializes the connecting parameters. The actual connect happens with the next calls |
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20 | * to ldap_* funcs, usually with ldap_bind(). |
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21 | */ |
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22 | public function check_ldap(){ |
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23 | |
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24 | if (!$this->ldap_conn()) { |
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25 | return $this->getErrorString(); |
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26 | } |
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27 | |
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28 | // test du compte root si renseigné |
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29 | if (!empty($this->config['ld_binddn']) && !empty($this->config['ld_bindpw'])){ // if empty ld_binddn, anonymous search |
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30 | // authentication with rootdn and rootpw for search |
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31 | if (!$this->ldap_bind_as($this->config['ld_binddn'],$this->config['ld_bindpw'])){ |
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32 | return $this->getErrorString(); |
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33 | } |
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34 | } else { |
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35 | // sinon recherche du basedn (cf comportement ldap_connect avec OpenLDAP) |
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36 | if (!$this->ldap_check_basedn()){ // search userdn |
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37 | return $this->getErrorString(); |
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38 | } |
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39 | } |
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40 | return true; |
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41 | } |
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42 | |
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43 | public function load_default_config() |
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44 | { |
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45 | $this->config['host'] = 'localhost'; |
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46 | $this->config['basedn'] = 'dc=example,dc=com'; // racine ! |
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47 | $this->config['usersbranch'] = 'ou=people'; |
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48 | $this->config['groupbranch'] = 'ou=group'; |
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49 | $this->config['ld_search_users'] = False; |
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50 | $this->config['ld_search_groups'] = False; |
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51 | $this->config['port'] = ''; // if port is empty, I count on the software to care of it ! |
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52 | $this->config['ld_attr'] = 'uid'; |
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53 | $this->config['ld_group'] = 'cn'; |
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54 | //$this->config['ld_class'] = 'posixAccount'; |
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55 | $this->config['ld_use_ssl'] = False; |
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56 | $this->config['ld_bindpw'] =''; |
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57 | $this->config['ld_binddn'] =''; |
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58 | $this->config['allow_newusers'] = False; |
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59 | $this->config['advertise_admin_new_ldapuser'] = False; |
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60 | $this->config['send_password_by_mail_ldap'] = False; |
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61 | |
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62 | $this->config['users_group'] = False; |
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63 | $this->config['webmasters_group'] = False; |
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64 | $this->config['admins_group'] = False; |
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65 | } |
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66 | |
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67 | function load_config() { |
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68 | $this->load_default_config(); |
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69 | |
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70 | // after the default, we can load the actual conf. That way, no holes ! |
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71 | $conf_file = @file_get_contents( LDAP_LOGIN_PATH.'data.dat' ); |
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72 | if ($conf_file!==false) |
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73 | { |
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74 | $this->config = unserialize($conf_file); |
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75 | $this->config['full_usersbranch'] = $this->config['usersbranch'].','.$this->config['basedn']; |
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76 | $this->config['full_groupbranch'] = $this->config['groupbranch'].','.$this->config['basedn']; |
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77 | } |
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78 | } |
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79 | |
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80 | function save_config() |
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81 | { |
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82 | $file = fopen( LDAP_LOGIN_PATH.'/data.dat', 'w' ); |
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83 | fwrite($file, serialize($this->config) ); |
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84 | fclose( $file ); |
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85 | } |
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86 | |
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87 | function ldap_admin_menu($menu) |
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88 | { |
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89 | array_push($menu, |
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90 | array( |
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91 | 'NAME' => 'Ldap Login', |
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92 | 'URL' => get_admin_plugin_menu_link(LDAP_LOGIN_PATH.'/admin.php') ) |
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93 | ); |
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94 | return $menu; |
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95 | } |
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96 | |
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97 | public function ldap_conn(){ |
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98 | if ($this->config['ld_use_ssl'] == 1){ |
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99 | if (empty($this->config['port'])){ |
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100 | $this->config['uri'] = 'ldaps://'.$this->config['host']; |
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101 | } |
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102 | else { |
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103 | $this->config['uri'] = 'ldaps://'.$this->config['host'].':'.$this->config['port']; |
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104 | } |
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105 | } |
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106 | |
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107 | // now, it's without ssl |
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108 | else { |
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109 | if (empty($this->config['port'])){ |
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110 | $this->config['uri'] = 'ldap://'.$this->config['host']; |
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111 | } |
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112 | else { |
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113 | $this->config['uri'] = 'ldap://'.$this->config['host'].':'.$this->config['port']; |
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114 | } |
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115 | } |
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116 | |
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117 | // first, we initializes connection to ldap |
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118 | if ($this->cnx = @ldap_connect($this->config['uri'])){ |
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119 | @ldap_set_option($this->cnx, LDAP_OPT_PROTOCOL_VERSION, 3); // LDAPv3 if possible |
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120 | |
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121 | // then we authenticate if anonymous search is forbidden |
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122 | if (!empty($obj->config['ld_binddn']) && !empty($obj->config['ld_bindpw'])){ |
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123 | if (@ldap_bind($this->cnx,$this->config['ld_binddn'],$this->config['ld_bindpw'])){ |
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124 | return true; |
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125 | } |
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126 | else { return false; } |
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127 | } |
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128 | // if anonymous search is allowed, we still need a fake auth using ldap_bind |
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129 | else { |
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130 | if (@ldap_bind($this->cnx)){ |
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131 | return true; |
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132 | } |
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133 | else { return false; } |
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134 | } |
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135 | } |
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136 | else { return false; } |
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137 | } |
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138 | |
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139 | // return ldap error |
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140 | public function getErrorString(){ |
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141 | return ldap_err2str(ldap_errno($this->cnx)); |
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142 | } |
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143 | |
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144 | // return the name ldap understand |
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145 | public function ldap_name($name){ |
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146 | if ($this->config['ld_search_users']) { |
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147 | return $this->ldap_search_dn($name); |
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148 | } |
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149 | else { return $this->config['ld_attr'].'='.$name.','.$this->config['full_usersbranch']; } |
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150 | } |
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151 | |
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152 | public function ldap_group($groupname){ |
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153 | // this should return an array, even if it's only one ! |
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154 | if ($this->config['ld_search_groups']) { |
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155 | return $this->ldap_search_group($groupname); |
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156 | } |
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157 | else { |
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158 | $result[] = $this->config['ld_group'].'='.$groupname.','.$this->config['full_groupbranch']; |
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159 | return $result; |
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160 | } |
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161 | } |
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162 | |
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163 | // authentication |
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164 | public function ldap_bind_as($user,$user_passwd){ |
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165 | if (@ldap_bind($this->cnx,$this->ldap_name($user),$user_passwd)){ |
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166 | return true; |
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167 | } |
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168 | return false; |
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169 | } |
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170 | |
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171 | public function ldap_mail($name){ |
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172 | $sr=@ldap_read($this->cnx, $this->ldap_name($name), "(objectclass=*)", array('mail')); |
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173 | $entry = @ldap_get_entries($this->cnx, $sr); |
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174 | |
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175 | if (!empty($entry[0]['mail'])) { |
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176 | return $entry[0]['mail'][0]; |
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177 | } |
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178 | return False; |
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179 | } |
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180 | |
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181 | public function ldap_search_group($to_search){ |
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182 | $ld_group = $this->config['ld_group']; |
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183 | |
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184 | $sr=@ldap_search($this->cnx, $this->config['full_groupbranch'], "($ld_group=$to_search)", array('dn'),0,0); |
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185 | $groups = @ldap_get_entries($this->cnx, $sr); |
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186 | $result = array(); |
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187 | foreach ($groups as $group) { |
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188 | $result[] = $group['dn']; |
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189 | } |
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190 | return $result; |
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191 | } |
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192 | |
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193 | public function ldap_search_dn($to_search){ |
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194 | $ld_attr = $this->config['ld_attr']; |
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195 | |
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196 | $sr=@ldap_search($this->cnx, $this->config['full_usersbranch'], "($ld_attr=$to_search)", array('dn','mail'),0,0); |
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197 | $entry = @ldap_get_entries($this->cnx, $sr); |
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198 | |
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199 | if (!empty($entry[0]['dn'])) { |
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200 | return $entry[0]['dn']; |
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201 | } |
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202 | else { return False; } |
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203 | } |
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204 | |
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205 | public function user_membership($user, $groups){ |
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206 | // $groups is an array of groupdn ! (there is a possibility of several groups, we search the user in each of them). |
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207 | foreach ($groups as $groupdn) { |
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208 | $filter = '(objectClass=*)'; |
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209 | $result = @ldap_read($this->cnx,$groupdn,$filter,array('memberUid')); |
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210 | $result2 = @ldap_get_entries($this->cnx, $result); |
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211 | if(isset($result2[0]['memberuid'])){ |
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212 | foreach($result2[0]['memberuid'] as $item){ |
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213 | if ($item == $user){ |
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214 | return True; |
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215 | } |
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216 | } |
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217 | } |
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218 | } |
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219 | return False; |
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220 | } |
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221 | |
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222 | public function ldap_status($username){ |
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223 | if ($this->config['webmasters_group']) { |
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224 | if ($this->user_membership($username,$this->ldap_group($this->config['webmasters_group']))) { |
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225 | // set status to webmaster and quit (more powerfull, no need to get further) |
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226 | return 'webmaster'; |
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227 | } |
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228 | } |
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229 | if ($this->config['admins_group']) { |
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230 | if ($this->user_membership($username,$this->ldap_group($this->config['admins_group']))) { |
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231 | // set status to admin |
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232 | return 'admin'; |
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233 | } |
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234 | } |
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235 | else |
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236 | { |
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237 | return 'normal'; |
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238 | } |
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239 | } |
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240 | |
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241 | public function getAttr(){ |
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242 | $search = @ldap_read($this->cnx, "cn=subschema", "(objectClass=*)", array('*', 'subschemasubentry')); |
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243 | $entries = @ldap_get_entries($this->cnx, $search); |
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244 | } |
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245 | |
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246 | public function getRootDse(){ |
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247 | |
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248 | $search = @ldap_read($this->cnx, NULL, 'objectClass=*', array("*", "+")); |
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249 | $entries = @ldap_get_entries($this->cnx, $search); |
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250 | return $entries[0]; |
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251 | } |
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252 | |
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253 | public function ldap_check_basedn(){ |
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254 | if ($read = @ldap_read($this->cnx,$this->config['basedn'],'(objectClass=*)',array('dn'))){ |
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255 | $entry = @ldap_get_entries($this->cnx, $read); |
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256 | if (!empty($entry[0]['dn'])) { |
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257 | return true; |
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258 | } |
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259 | } |
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260 | return false; |
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261 | } |
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262 | |
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263 | } |
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264 | ?> |
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