PHP ldap_filter_addslashes函数代码示例

 /**
  * Return multidimensional array with details of user courses (at
  * least dn and idnumber).
  *
  * @param string $memberuid user idnumber (without magic quotes).
  * @param object role is a record from the mdl_role table.
  * @return array
  */
 protected function find_ext_enrolments($memberuid, $role)
 {
     global $CFG;
     require_once $CFG->libdir . '/ldaplib.php';
     if (empty($memberuid)) {
         // No "idnumber" stored for this user, so no LDAP enrolments
         return array();
     }
     $ldap_contexts = trim($this->get_config('contexts_role' . $role->id));
     if (empty($ldap_contexts)) {
         // No role contexts, so no LDAP enrolments
         return array();
     }
     $extmemberuid = core_text::convert($memberuid, 'utf-8', $this->get_config('ldapencoding'));
     if ($this->get_config('memberattribute_isdn')) {
         if (!($extmemberuid = $this->ldap_find_userdn($extmemberuid))) {
             return array();
         }
     }
     $ldap_search_pattern = '';
     if ($this->get_config('nested_groups')) {
         $usergroups = $this->ldap_find_user_groups($extmemberuid);
         if (count($usergroups) > 0) {
             foreach ($usergroups as $group) {
                 $ldap_search_pattern .= '(' . $this->get_config('memberattribute_role' . $role->id) . '=' . $group . ')';
             }
         }
     }
     // Default return value
     $courses = array();
     // Get all the fields we will want for the potential course creation
     // as they are light. don't get membership -- potentially a lot of data.
     $ldap_fields_wanted = array('dn', $this->get_config('course_idnumber'));
     $fullname = $this->get_config('course_fullname');
     $shortname = $this->get_config('course_shortname');
     $summary = $this->get_config('course_summary');
     if (isset($fullname)) {
         array_push($ldap_fields_wanted, $fullname);
     }
     if (isset($shortname)) {
         array_push($ldap_fields_wanted, $shortname);
     }
     if (isset($summary)) {
         array_push($ldap_fields_wanted, $summary);
     }
     // Define the search pattern
     if (empty($ldap_search_pattern)) {
         $ldap_search_pattern = '(' . $this->get_config('memberattribute_role' . $role->id) . '=' . ldap_filter_addslashes($extmemberuid) . ')';
     } else {
         $ldap_search_pattern = '(|' . $ldap_search_pattern . '(' . $this->get_config('memberattribute_role' . $role->id) . '=' . ldap_filter_addslashes($extmemberuid) . ')' . ')';
     }
     $ldap_search_pattern = '(&' . $this->get_config('objectclass') . $ldap_search_pattern . ')';
     // Get all contexts and look for first matching user
     $ldap_contexts = explode(';', $ldap_contexts);
     $ldap_pagedresults = ldap_paged_results_supported($this->get_config('ldap_version'));
     foreach ($ldap_contexts as $context) {
         $context = trim($context);
         if (empty($context)) {
             continue;
         }
         $ldap_cookie = '';
         $flat_records = array();
         do {
             if ($ldap_pagedresults) {
                 ldap_control_paged_result($this->ldapconnection, $this->config->pagesize, true, $ldap_cookie);
             }
             if ($this->get_config('course_search_sub')) {
                 // Use ldap_search to find first user from subtree
                 $ldap_result = @ldap_search($this->ldapconnection, $context, $ldap_search_pattern, $ldap_fields_wanted);
             } else {
                 // Search only in this context
                 $ldap_result = @ldap_list($this->ldapconnection, $context, $ldap_search_pattern, $ldap_fields_wanted);
             }
             if (!$ldap_result) {
                 continue;
             }
             if ($ldap_pagedresults) {
                 ldap_control_paged_result_response($this->ldapconnection, $ldap_result, $ldap_cookie);
             }
             // Check and push results. ldap_get_entries() already
             // lowercases the attribute index, so there's no need to
             // use array_change_key_case() later.
             $records = ldap_get_entries($this->ldapconnection, $ldap_result);
             // LDAP libraries return an odd array, really. Fix it.
             for ($c = 0; $c < $records['count']; $c++) {
                 array_push($flat_records, $records[$c]);
             }
             // Free some mem
             unset($records);
         } while ($ldap_pagedresults && !empty($ldap_cookie));
         // If LDAP paged results were used, the current connection must be completely
         // closed and a new one created, to work without paged results from here on.
//.........这里部分代码省略.........

/**
 * Search specified contexts for username and return the user dn like:
 * cn=username,ou=suborg,o=org
 *
 * @param mixed $ldapconnection a valid LDAP connection.
 * @param mixed $username username (external LDAP encoding, no db slashes).
 * @param array $contexts contexts to look for the user.
 * @param string $objectclass objectlass of the user (in LDAP filter syntax).
 * @param string $search_attrib the attribute use to look for the user.
 * @param boolean $search_sub whether to search subcontexts or not.
 * @return mixed the user dn (external LDAP encoding, no db slashes) or false
 *
 */
function ldap_find_userdn($ldapconnection, $username, $contexts, $objectclass, $search_attrib, $search_sub)
{
    if (empty($ldapconnection) || empty($username) || empty($contexts) || empty($objectclass) || empty($search_attrib)) {
        return false;
    }
    // Default return value
    $ldap_user_dn = false;
    // Get all contexts and look for first matching user
    foreach ($contexts as $context) {
        $context = trim($context);
        if (empty($context)) {
            continue;
        }
        if ($search_sub) {
            $ldap_result = ldap_search($ldapconnection, $context, '(&' . $objectclass . '(' . $search_attrib . '=' . ldap_filter_addslashes($username) . '))', array($search_attrib));
        } else {
            $ldap_result = ldap_list($ldapconnection, $context, '(&' . $objectclass . '(' . $search_attrib . '=' . ldap_filter_addslashes($username) . '))', array($search_attrib));
        }
        $entry = ldap_first_entry($ldapconnection, $ldap_result);
        if ($entry) {
            $ldap_user_dn = ldap_get_dn($ldapconnection, $entry);
            break;
        }
    }
    return $ldap_user_dn;
}

 /**
  * Checks if user exists on LDAP
  *
  * @param string $username
  */
 function user_exists($username)
 {
     $extusername = core_text::convert($username, 'utf-8', $this->config->ldapencoding);
     // Returns true if given username exists on ldap
     $users = $this->ldap_get_userlist('(' . $this->config->user_attribute . '=' . ldap_filter_addslashes($extusername) . ')');
     return count($users);
 }

function ldap_find_userdn($ldapconnection, $username)
{
    global $options;
    // Default return value
    $ldap_user_dn = false;
    $contexts = explode(';', $options['ldap_context']);
    // Get all contexts and look for first matching user
    foreach ($contexts as $context) {
        $context = trim($context);
        if (empty($context)) {
            continue;
        }
        $ldap_result = ldap_search($ldapconnection, $context, '(&(objectClass=posixaccount)(uid=' . ldap_filter_addslashes($username) . '))', array('uid'));
        $entry = ldap_first_entry($ldapconnection, $ldap_result);
        if ($entry) {
            $ldap_user_dn = ldap_get_dn($ldapconnection, $entry);
            break;
        }
    }
    return $ldap_user_dn;
}