lmhash($password);
}
/**
* Generates the NT hash of a password.
*
* @param string password original password
* @return string password hash
*/
function ntPassword($password) {
// Needed to calculate Samba passwords
include_once("createntlm.inc");
// get hash
$hash = new smbHash();
return $hash->nthash($password);
}
/**
* Returns the hash value of a plain text password.
* @see getSupportedHashTypes()
*
* @param string $password the password string
* @param boolean $enabled marks the hash as enabled/disabled (e.g. by prefixing "!")
* @param string $hashType password hash type (CRYPT, CRYPT-SHA512, SHA, SSHA, MD5, SMD5, PLAIN, K5KEY)
* @return string the password hash
*/
function pwd_hash($password, $enabled = true, $hashType = 'SSHA') {
// check for empty password
if (! $password || ($password == "")) {
return "";
}
$hash = "";
switch ($hashType) {
case 'CRYPT':
$hash = "{CRYPT}" . crypt($password);
break;
case 'CRYPT-SHA512':
$hash = "{CRYPT}" . crypt($password, '$6$' . generateSalt(16));
break;
case 'MD5':
$hash = "{MD5}" . base64_encode(hex2bin(md5($password)));
break;
case 'SMD5':
$salt = generateSalt(4);
$hash = "{SMD5}" . base64_encode(hex2bin(md5($password . $salt)) . $salt);
break;
case 'SHA':
$hash = "{SHA}" . base64_encode(hex2bin(sha1($password)));
break;
case 'PLAIN':
$hash = $password;
break;
case 'K5KEY':
$hash = '{K5KEY}';
break;
case 'SSHA':
default: // use SSHA if the setting is invalid
$salt = generateSalt(4);
$hash = "{SSHA}" . base64_encode(hex2bin(sha1($password . $salt)) . $salt);
break;
}
// enable/disable password
if (! $enabled) return pwd_disable($hash);
else return $hash;
}
/**
* Returns the list of supported hash types (e.g. SSHA).
*
* @return array hash types
*/
function getSupportedHashTypes() {
return array('CRYPT', 'CRYPT-SHA512', 'SHA', 'SSHA', 'MD5', 'SMD5', 'PLAIN', 'SASL', 'K5KEY');
}
/**
* Calculates a password salt of the given legth.
*
* @param int $len salt length
* @return String the salt string
*
*/
function generateSalt($len) {
$chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz1234567890./';
$salt = '';
for ($i = 0; $i < $len; $i++) {
$pos = abs(getRandomNumber() % strlen($chars));
$salt .= $chars{$pos};
}
return $salt;
}
/**
* Marks an password hash as enabled and returns the new hash string
*
* @param string $hash hash value to enable
* @return string enabled password hash
*/
function pwd_enable($hash) {
// check if password is disabled (old wrong LAM method)
if ((substr($hash, 0, 2) == "!{") || ((substr($hash, 0, 2) == "*{"))) {
return substr($hash, 1, strlen($hash));
}
// check for "!" or "*" at beginning of password hash
else {
if (substr($hash, 0, 1) == "{") {
$pos = strpos($hash, "}");
if ((substr($hash, $pos + 1, 1) == "!") || (substr($hash, $pos + 1, 1) == "*")) {
// enable hash
return substr($hash, 0, $pos + 1) . substr($hash, $pos + 2, strlen($hash));
}
else return $hash; // not disabled
}
else return $hash; // password is plain text
}
}
/**
* Marks an password hash as disabled and returns the new hash string
*
* @param string $hash hash value to disable
* @return string disabled hash value
*/
function pwd_disable($hash) {
// check if password is disabled (old wrong LAM method)
if ((substr($hash, 0, 2) == "!{") || ((substr($hash, 0, 2) == "*{"))) {
return $hash;
}
// check for "!" or "*" at beginning of password hash
else {
if (substr($hash, 0, 1) == "{") {
$pos = strpos($hash, "}");
if ((substr($hash, $pos + 1, 1) == "!") || (substr($hash, $pos + 1, 1) == "*")) {
// hash already disabled
return $hash;
}
else return substr($hash, 0, $pos + 1) . "!" . substr($hash, $pos + 1, strlen($hash)); // not disabled
}
else return $hash; // password is plain text
}
}
/**
* Checks if a Unix password can be locked.
* This checks if the password is not plain text but e.g. contains {SSHA}.
*
* @param String $password password value
* @return boolean can be locked
*/
function pwd_is_lockable($password) {
if (($password == null) || (strlen($password) < 5)) {
return false;
}
// SASL is not lockable
if (strpos($password, '{SASL}') === 0) {
return false;
}
return ((substr($password, 0, 1) == "{") || (substr($password, 1, 1) == "{")) && (strpos($password, "}") > 3);
}
/**
* Checks if a password hash is enabled/disabled
*
* @param string $hash password hash to check
* @return boolean true if the password is marked as enabled
*/
function pwd_is_enabled($hash) {
// disabled passwords have a "!" or "*" at the beginning (old wrong LAM method)
if ((substr($hash, 0, 2) == "!{") || ((substr($hash, 0, 2) == "*{"))) return false;
if (substr($hash, 0, 1) == "{") {
$pos = strrpos($hash, "}");
// check if hash starts with "!" or "*"
if ((substr($hash, $pos + 1, 1) == "!") || (substr($hash, $pos + 1, 1) == "*")) return false;
else return true;
}
else return true;
}
/**
* Generates a random password with 12 digits.
*
* @return String password
*/
function generateRandomPassword() {
$list = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ.-_';
$password = '';
$length = $_SESSION['cfgMain']->passwordMinLength;
if ($length < 12) {
$length = 12;
}
$isOk = false;
for ($x = 0; $x < 10000; $x++) {
$password = '';
for ($i = 0; $i < $length; $i++) {
$rand = abs(getRandomNumber() % 65);
$password .= $list[$rand];
}
if (checkPasswordStrength($password, null, null) === true) {
break;
}
}
return $password;
}
/**
* Checks if the given password mathes the crypto hash.
*
* @param String type hash type (must be one of getSupportedHashTypes())
* @param unknown_type $hash password hash value
* @param unknown_type $password plain text password to check
* @see getSupportedHashTypes()
*/
function checkPasswordHash($type, $hash, $password) {
switch ($type) {
case 'SSHA':
$bin = base64_decode($hash);
$salt = substr($bin, 20);
$pwdHash = base64_encode(hex2bin(sha1($password . $salt)) . $salt);
return (strcmp($hash, $pwdHash) == 0);
break;
case 'SHA':
return (strcmp($hash, base64_encode(hex2bin(sha1($password)))) == 0);
break;
case 'SMD5':
$bin = base64_decode($hash);
$salt = substr($bin, 16);
$pwdHash = base64_encode(hex2bin(md5($password . $salt)) . $salt);
return (strcmp($hash, $pwdHash) == 0);
break;
case 'MD5':
return (strcmp($hash, base64_encode(hex2bin(md5($password)))) == 0);
break;
case 'CRYPT':
$parts = explode('$', $hash);
if (sizeof($parts) == 4) {
$version = $parts[1];
$salt = $parts[2];
$pwdHash = crypt($password, '$' . $version . '$' . $salt);
return (strcmp($hash, $pwdHash) == 0);
}
elseif (sizeof($parts) == 5) {
$version = $parts[1];
$rounds = $parts[2];
$salt = $parts[3];
$pwdHash = crypt($password, '$' . $version . '$' . $rounds . '$' . $salt);
return (strcmp($hash, $pwdHash) == 0);
}
return false;
break;
default:
return false;
}
return false;
}
/**
* Returns an array with all Samba 3 domain entries under the given suffix
*
* @param handle LDAP handle (if null then $_SESSION['ldap']->server() is used)
* @param String $suffix LDAP suffix to search (if null then $_SESSION['config']->get_Suffix('smbDomain') is used)
* @return array list of samba3domain objects
*/
function search_domains($server = null, $suffix = null) {
if ($suffix == null) {
$suffix = $_SESSION['config']->get_Suffix('smbDomain');
}
$ret = array();
$attr = array("DN", "sambaDomainName", "sambaSID", "sambaNextRid", "sambaNextGroupRid",
"sambaNextUserRid", "sambaAlgorithmicRidBase", 'sambaMinPwdAge', 'sambaMaxPwdAge',
'sambaPwdHistoryLength'
);
if ($server == null) {
$server = $_SESSION['ldap']->server();
}
$filter = '(objectclass=sambaDomain)';
$units = searchLDAPPaged($server, $suffix, $filter, $attr, false, 0);
// extract attributes
for ($i = 0; $i < sizeof($units); $i++) {
$ret[$i] = new samba3domain();
$ret[$i]->dn = $units[$i]['dn'];
$ret[$i]->name = $units[$i]['sambadomainname'][0];
$ret[$i]->SID = $units[$i]['sambasid'][0];
if (isset($units[$i]['sambanextrid'][0])) $ret[$i]->nextRID = $units[$i]['sambanextrid'][0];
if (isset($units[$i]['sambanextgrouprid'][0])) $ret[$i]->nextGroupRID = $units[$i]['sambanextgrouprid'][0];
if (isset($units[$i]['sambanextuserrid'][0])) $ret[$i]->nextUserRID = $units[$i]['sambanextuserrid'][0];
if (isset($units[$i]['sambaalgorithmicridbase'][0])) $ret[$i]->RIDbase = $units[$i]['sambaalgorithmicridbase'][0];
if (isset($units[$i]['sambaminpwdage'][0])) $ret[$i]->minPwdAge = $units[$i]['sambaminpwdage'][0];
if (isset($units[$i]['sambamaxpwdage'][0])) $ret[$i]->maxPwdAge = $units[$i]['sambamaxpwdage'][0];
if (isset($units[$i]['sambapwdhistorylength'][0])) $ret[$i]->pwdHistoryLength = $units[$i]['sambapwdhistorylength'][0];
}
return $ret;
}
/**
* Represents a Samba 3 domain entry
*
* @package modules
*/
class samba3domain {
/** DN */
public $dn;
/** Domain name */
public $name;
/** Domain SID */
public $SID;
/** Next RID */
public $nextRID;
/** Next user RID */
public $nextUserRID;
/** Next group RID */
public $nextGroupRID;
/** RID base to calculate RIDs, default 1000 */
public $RIDbase = 1000;
/** seconds after the password can be changed */
public $minPwdAge;
/** seconds after the password must be changed */
public $maxPwdAge;
/** password history length */
public $pwdHistoryLength;
}
/**
* Checks if a given value matches the selected regular expression.
*
* @param string $argument value to check
* @param string $regexp pattern name
* @return boolean true if matches, otherwise false
*/
function get_preg($argument, $regexp) {
/* Bug in php preg_match doesn't work correct with utf8 */
$language = $_SESSION['language'];
$language2 = explode ('.', $language);
setlocale(LC_ALL, $language2[0]);
// First we check "positive" cases
$pregexpr = '';
switch ($regexp) {
case 'password':
$pregexpr = '/^([[:alnum:]\\^\\ \\|\\#\\*\\,\\.\\;\\:\\_\\+\\!\\%\\&\\/\\?\\{\\(\\)\\}\\[\\]\\$§°@=-])*$/u';
break;
case 'groupname': // all letters, numbers, space and ._- are allowed characters
case 'username':
case 'hostname':
$pregexpr = '/^([[:alnum:]%#@\\.\\ \\_\\$-])+$/u';
break;
case 'krbUserName':
$pregexpr = '/^([[:alnum:]#@\\/\\.\\ \\_\\$-])+$/u';
break;
case 'hostObject':
$pregexpr = '/^[!]?([[:alnum:]@\\.\\ \\_\\$\\*-])+$/u';
break;
case 'usernameList': // comma separated list of user names
case 'groupnameList': // comma separated list of group names
$pregexpr = '/^([[:alnum:]%#@\\.\\ \\_-])+(,([[:alnum:]%#@\\.\\ \\_-])+)*$/u';
break;
case 'realname': // Allow all but \, <, >, =, $, ?
case 'cn':
$pregexpr = '/^[^\\\<>=\\$\\?]+(\\$)?$/';
break;
case "telephone": // Allow letters, numbers, space, brackets, /-+.
$pregexpr = '/^(\\+)*([0-9a-zA-Z\\.\\ \\(\\)\\/-])*$/';
break;
case "email":
$pregexpr = '/^([0-9a-zA-Z\'!~#+*%\\$\\/\\._-])+[@]([0-9a-zA-Z-])+([.]([0-9a-zA-Z-])+)*$/';
break;
case "emailWithName":
$pregexpr = '/^([[:alnum:] \'!~#+*%\\$\\(\\)_-])+ <([0-9a-zA-Z\'!~#+*%\\$\\/\\._-])+[@]([0-9a-zA-Z-])+([.]([0-9a-zA-Z-])+)*>$/u';
break;
case "mailLocalAddress":
$pregexpr = '/^([0-9a-zA-Z+\\/\\._-])+([@]([0-9a-zA-Z-])+([.]([0-9a-zA-Z-])+)*)?$/';
break;
case 'kolabEmailPrefix':
$pregexpr = '/^([-])?([0-9a-zA-Z+\\/\\._-])*([@]([0-9a-zA-Z\\.-])*)?$/';
break;
case "postalAddress": // Allow all but \, <, >, =, ?
$pregexpr = '/^[^\\\<>=\\?]*$/';
break;
case "postalCode": // Allow all but \, <, >, =, ?
case "street":
case "title":
case "employeeType":
case "businessCategory":
$pregexpr = '/^[^\\\<>=\\$\\?]*$/';
break;
case "homeDirectory": // Homapath, /path/......
case "filePath":
$pregexpr = '/^([\/]([[:alnum:]@\\$\\.\\ \\_-])+)+(\/)?$/u';
break;
case "digit": // Normal number
$pregexpr = '/^[[:digit:]]*$/';
break;
case "float": // float value
$pregexpr = '/^[[:digit:]]+(\\.[[:digit:]]+)?$/';
break;
case "UNC": // UNC Path, e.g. \\server\share\folder\...
$pregexpr = '/^((([\\\][\\\])|(%))([a-zA-Z0-9@%\\.-])+)([\\\]([[:alnum:]@%\\.\\$\\ \\_-])+)+$/u';
break;
case "logonscript": // path to login-script. normal unix file
$pregexpr = '/^(([\/\\\])*([[:alnum:]%\\.\\ \\$\\_-])+([\/\\\]([[:alnum:]%\\.\\ \\$\\_-])+)*((\\.bat)|(\\.cmd)|(\\.exe)|(\\.vbs)))*$/u';
break;
case "workstations": // comma separated list with windows-hosts
$pregexpr = '/^(([a-zA-Z0-9\\.\\_-])+(,[a-zA-Z0-9\\.\\_-])*)*$/';
break;
case "domainname": // Windows Domainname
$pregexpr = '/^([A-Za-z0-9\\.\\_-])+$/';
break;
case "unixhost": // Unix hosts
$pregexpr = '/^([a-z0-9,\\.\\*_-])*$/';
break;
case 'digit2': // Same as digit but also -1
$pregexpr = '/^(([-][1])|([[:digit:]]*))$/';
break;
case 'gecos':
$pregexpr = '/^[[:alnum:] \\._-]+([,][[:alnum:] \\._-]+)*$/u';
break;
case 'macAddress':
$pregexpr = '/^[0-9a-fA-F]{2}(:[0-9a-fA-F]{2}){5}$/';
break;
case 'date': // 31-12-2012
$pregexpr = '/^((0?[1-9])|([1-2][0-9])|30|31)\\-((0?[1-9])|(1[0-2]))\\-[1-3][0-9][0-9][0-9]$/';
break;
case 'date2':
$pregexpr = '/^((0[1-9])|([1-2][0-9])|30|31)\\.((0[1-9])|(1[0-2]))\\.[1-3][0-9][0-9][0-9]$/';
break;
case 'sambaLogonHours':
$pregexpr = '/^[0-9a-fA-F]{42}$/';
break;
case 'DNSname':
$pregexpr = '/^[0-9a-zA-Z_-]+(\\.[0-9a-zA-Z_-]+)*$/';
break;
case 'nis_alias':
$pregexpr = '/^([[:alnum:]@\\.\\ \\_-])+$/u';
break;
case 'nis_recipient':
$pregexpr = '/^([[:alnum:]+@\\.\\ \\_-])+$/u';
break;
case 'country': // Allow all letters and space
$pregexpr = '/^[[:alpha:]]([[:alpha:] ])+$/u';
break;
case 'dn': // LDAP DN
$pregexpr = '/^([^=,]+=[^=,]+)(,([^=,]+=[^=,]+))*$/';
break;
case 'domainSID': // Samba domain SID
$pregexpr = "/^S\\-[0-9]\\-[0-9]\\-[0-9]{2,2}\\-[0-9]+\\-[0-9]+\\-[0-9]+$/";
break;
case 'ip': // IP address
$pregexpr = '/^[0-9]{1,3}[.][0-9]{1,3}[.][0-9]{1,3}[.][0-9]{1,3}$/';
break;
case 'ip6': // IPv6 address (only basic check)
$pregexpr = '/^[0-9a-f:]+$/i';
break;
case 'ascii': // ASCII
$pregexpr = '/^[' . chr(1) . '-' . chr(128) . ']*$/';
break;
case 'objectClass':
$pregexpr = '/^[[:alnum:]_-]+$/';
break;
case 'quotaNumber':
$pregexpr = '/^[[:digit:]]+[KMGTkmgt]?$/';
break;
}
if ($pregexpr!='')
if (preg_match($pregexpr, $argument)) {
/* Bug in php preg_match doesn't work correct with utf8 */
setlocale(LC_ALL, $language);
return true;
}
// Now we check "negative" cases, characters which are not allowed
$pregexpr = '';
switch ($regexp) {
case "!lower":
$pregexpr = '/[[:lower:]]/';
break;
case "!upper":
$pregexpr = '/[[:upper:]]/';
break;
case "!digit":
$pregexpr = '/[[:digit:]]/';
break;
}
if ($pregexpr!='')
if (!preg_match($pregexpr, $argument)) {
/* Bug in php preg_match doesn't work correct with utf8 */
setlocale(LC_ALL, $language);
return true;
}
/* Bug in php preg_match doesn't work correct with utf8 */
setlocale(LC_ALL, $language);
return false;
}
/**
* Escapes any special characters in an LDAP DN.
*
* @param String $dn DN
* @return String escaped DN
*/
function escapeDN($dn) {
$dn = preg_replace('/[ ]*,[ ]*/', ',', $dn);
return str_replace(
array(')', '(', ' ', '*'),
array('\\29', '\\28', '\\20', '\\2a'),
$dn
);
}
/**
* Connects to an LDAP server using the given URL.
*
* @param string $serverURL URL
*/
function connectToLDAP($serverURL, $startTLS) {
$server = ldap_connect($serverURL);
if (!$server) {
return null;
}
// use LDAPv3
ldap_set_option($server, LDAP_OPT_PROTOCOL_VERSION, 3);
// start TLS if possible
if ($startTLS) {
ldap_start_tls($server);
if (ldap_errno($server) != 0) {
ldap_close($server);
logNewMessage(LOG_ERR, 'Unable to start TLS encryption. Please check if your server certificate is valid and if the LDAP server supports TLS at all.');
return null;
}
}
return $server;
}
/**
* This will search the given LDAP suffix for all entries which have the given attribute.
*
* @param String $name attribute name (may be null)
* @param String $value attribute value
* @param String $objectClass object class (may be null)
* @param array $attributes list of attributes to return
* @param array $scopes account types
* @return array list of found entries
*/
function searchLDAPByAttribute($name, $value, $objectClass, $attributes, $scopes) {
$return = array();
// build filter
$filter = '';
$filterParts = array();
if ($name != null) {
$filterParts[] = '(' . $name . '=' . $value . ')';
}
if ($objectClass != null) {
$filterParts[] = '(objectClass=' . $objectClass . ')';
}
if (sizeof($filterParts) == 1) {
$filter = $filterParts[0];
}
elseif (sizeof($filterParts) > 1) {
$filter = '(& ' . implode(' ', $filterParts) . ')';
}
$typeManager = new \LAM\TYPES\TypeManager();
$activeTypes = $typeManager->getConfiguredTypes();
foreach ($activeTypes as $type) {
if (!in_array($type->getScope(), $scopes)) {
continue; // skip non-active account types
}
// search LDAP
$entries = searchLDAPPaged($_SESSION['ldap']->server(), escapeDN($type->getSuffix()),
$filter, $attributes, 0, $_SESSION['config']->get_searchLimit());
if (ldap_errno($_SESSION['ldap']->server()) == 4) {
logNewMessage(LOG_WARNING, 'LDAP size limit exeeded. Please increase the limit on your server.');
}
$return = array_merge($return, $entries);
}
return $return;
}
/**
* This will search the given LDAP suffix for all entries which match the given filter.
*
* @param String $filter
* @param array $attributes list of attributes to return
* @param array $scopes account types
* @param boolean $attrsOnly get only attributes but no values (default: false)
* @return array list of found entries
*/
function searchLDAPByFilter($filter, $attributes, $scopes, $attrsOnly = false) {
$return = array();
$readAttributesOnly = 0;
if ($attrsOnly) {
$readAttributesOnly = 1;
}
$typeManager = new \LAM\TYPES\TypeManager();
$types = $typeManager->getConfiguredTypesForScopes($scopes);
foreach ($types as $type) {
// search LDAP
$entries = searchLDAPPaged($_SESSION['ldap']->server(), escapeDN($type->getSuffix()),
$filter, $attributes, $readAttributesOnly, $_SESSION['config']->get_searchLimit());
if (ldap_errno($_SESSION['ldap']->server()) == 4) {
logNewMessage(LOG_WARNING, 'LDAP size limit exeeded. Please increase the limit on your server.');
}
$return = array_merge($return, $entries);
}
return $return;
}
/**
* Runs an LDAP search.
*
* @param String $suffix LDAP suffix
* @param String $filter filter
* @param array $attributes list of attributes to return
* @return array list of found entries
*/
function searchLDAP($suffix, $filter, $attributes) {
$limit = 0;
if (!empty($_SESSION['config'])) {
$limit = $_SESSION['config']->get_searchLimit();
}
$return = searchLDAPPaged(getLDAPServerHandle(), escapeDN($suffix), $filter, $attributes,
0, $limit);
if (ldap_errno(getLDAPServerHandle()) == 4) {
logNewMessage(LOG_WARNING, 'LDAP size limit exeeded. Please increase the limit on your server.');
}
return $return;
}
/**
* Returns the LDAP server handle.
*
* @return handle LDAP handle
*/
function getLDAPServerHandle() {
if (!empty($_SESSION['ldap'])) {
// admin pages
return $_SESSION['ldap']->server();
}
else {
// self service
return $_SESSION['ldapHandle'];
}
}
/**
* Runs an LDAP search and uses paging if configured.
*
* @param handle $server LDAP connection handle
* @param String $dn DN
* @param String $filter filter
* @param array $attributes attribute list
* @param boolean $attrsOnly return only attribute names
* @param int $limit size limit
*/
function searchLDAPPaged($server, $dn, $filter, $attributes, $attrsOnly, $limit) {
if (empty($_SESSION['config']) || ($_SESSION['config']->getPagedResults() !== 'true')) {
$sr = @ldap_search($server, $dn, $filter, $attributes, $attrsOnly, $limit, 0, LDAP_DEREF_NEVER);
if ($sr) {
$entries = ldap_get_entries($server, $sr);
if (!$entries) {
return array();
}
cleanLDAPResult($entries);
return $entries;
}
else {
return array();
}
}
$pageSize = 999;
$cookie = '';
$return = array();
do {
@ldap_control_paged_result($server, $pageSize, true, $cookie);
$sr = @ldap_search($server, $dn, $filter, $attributes, $attrsOnly, $limit, 0, LDAP_DEREF_NEVER);
if (!$sr) {
break;
}
$entries = ldap_get_entries($server, $sr);
if (!$entries) {
break;
}
$return = array_merge($return, $entries);
@ldap_control_paged_result_response($server, $sr, $cookie);
} while($cookie !== null && $cookie != '');
cleanLDAPResult($return);
return $return;
}
/**
* Returns the given DN.
*
* @param String $dn DN
* @param array $attributes list of attributes to fetch
* @param handle $handle LDAP handle (optional for admin interface pages)
* @return array attributes or null if not found
*/
function ldapGetDN($dn, $attributes = array('dn'), $handle = null) {
if ($handle == null) {
$handle = $_SESSION['ldap']->server();
}
$return = null;
$sr = @ldap_read($handle, escapeDN($dn), 'objectClass=*', $attributes, 0, 0, 0, LDAP_DEREF_NEVER);
if ($sr) {
$entries = ldap_get_entries($handle, $sr);
if ($entries) {
cleanLDAPResult($entries);
$return = $entries[0];
}
@ldap_free_result($sr);
}
return $return;
}
/**
* Deletes a DN and all child entries.
*
* @param string $dn DN to delete
* @param boolean $recursive recursive delete also child entries
* @return array error messages
*/
function deleteDN($dn, $recursive) {
$errors = array();
if (($dn == null) || ($dn == '')) {
$errors[] = array('ERROR', _('Entry does not exist'));
return $errors;
}
if ($recursive) {
$sr = @ldap_list($_SESSION['ldap']->server(), $dn, 'objectClass=*', array('dn'), 0, 0, 0, LDAP_DEREF_NEVER);
if ($sr) {
$entries = ldap_get_entries($_SESSION['ldap']->server(), $sr);
cleanLDAPResult($entries);
for ($i = 0; $i < sizeof($entries); $i++) {
// delete recursively
$subErrors = deleteDN($entries[$i]['dn'], $recursive);
for ($e = 0; $e < sizeof($subErrors); $e++) $errors[] = $subErrors[$e];
}
}
else {
$errors[] = array ('ERROR', sprintf(_('Was unable to delete DN: %s.'), $dn), getDefaultLDAPErrorString($_SESSION['ldap']->server()));
return $errors;
}
}
// delete parent DN
$success = @ldap_delete($_SESSION['ldap']->server(), $dn);
$ldapUser = $_SESSION['ldap']->decrypt_login();
$ldapUser = $ldapUser[0];
if (!$success) {
logNewMessage(LOG_ERR, '[' . $ldapUser .'] Unable to delete DN: ' . $dn . ' (' . ldap_error($_SESSION['ldap']->server()) . ').');
$errors[] = array ('ERROR', sprintf(_('Was unable to delete DN: %s.'), $dn), getDefaultLDAPErrorString($_SESSION['ldap']->server()));
}
else {
logNewMessage(LOG_NOTICE, '[' . $ldapUser .'] Deleted DN: ' . $dn);
}
return $errors;
}
/**
* Returns the parameters for a StatusMessage of the last LDAP search.
*
* @return array parameters for StatusMessage or null if all was ok
*/
function getLastLDAPError() {
$errorNumber = ldap_errno($_SESSION["ldap"]->server());
switch ($errorNumber) {
// all ok
case 0:
return null;
break;
// size limit exceeded
case 4:
$error = array("WARN", _("LDAP sizelimit exceeded, not all entries are shown."));
if ($_SESSION['config']->get_searchLimit() == 0) {
// server limit exceeded
$error[] = _("See the manual for instructions to solve this problem.");
}
return $error;
break;
// other errors
default:
return array("ERROR", _("LDAP search failed! Please check your preferences."), ldap_error($_SESSION["ldap"]->server()));
break;
}
}
/**
* Cleans the result of an LDAP search.
* This will remove all 'count' entries and also all numeric array keys.
*
* @param array $entries LDAP entries in format $entries[entry number][attribute name][attribute values]
*/
function cleanLDAPResult(&$entries) {
if (isset($entries['count'])) {
unset($entries['count']);
}
// iterate over all results
$count = sizeof($entries);
for ($e = 0; $e < $count; $e++) {
// remove 'count' entries and numerical entries
for ($i = 0; $i < $entries[$e]['count']; $i++) {
if (isset($entries[$e][$i])) {
unset($entries[$e][$i]);
}
}
unset($entries[$e]['count']);
$attrNames = array_keys($entries[$e]);
$attrCount = sizeof($attrNames);
for ($i = 0; $i < $attrCount; $i++) {
if (is_array($entries[$e][$attrNames[$i]])) {
unset($entries[$e][$attrNames[$i]]['count']);
}
}
}
}
/**
* Transforms a DN into a more user friendly format.
* E.g. "dc=company,dc=de" is transformed to "company > de".
*
* @param String $dn DN
* @return String transformed DN
*/
function getAbstractDN($dn) {
if ($dn == '') {
return '';
}
$parts = explode(',', $dn);
for ($i = 0; $i < sizeof($parts); $i++) {
$subparts = explode('=', $parts[$i]);
if (sizeof($subparts) == 2) {
$parts[$i] = $subparts[1];
}
}
return implode(' > ', $parts);
}
/**
* Helper function to sort DNs.
*
* @param string $a first argument to compare
* @param string $b second argument to compare
* @return integer 0 if equal, 1 if $a is greater, -1 if $b is greater
*/
function compareDN(&$a, &$b) {
// split DNs
$array_a = explode(",", strtolower($a));
$array_b = explode(",", strtolower($b));
$len_a = sizeof($array_a);
$len_b = sizeof($array_b);
// check how many parts to compare
$len = min($len_a, $len_b);
// compare from last part on
for ($i = 0; $i < $len; $i++) {
// get parts to compare
$part_a = $array_a[$len_a - $i - 1];
$part_a = explode('=', $part_a);
$part_a = isset($part_a[1]) ? $part_a[1] : $part_a[0];
$part_b = $array_b[$len_b - $i - 1];
$part_b = explode('=', $part_b);
$part_b = isset($part_b[1]) ? $part_b[1] : $part_b[0];
// compare parts
if ($part_a == $part_b) { // part is identical
if ($i == ($len - 1)) {
if ($len_a > $len_b) return 1;
elseif ($len_a < $len_b) return -1;
else return 0; // DNs are identical
}
}
else {
return strnatcasecmp($part_a, $part_b);
}
}
return -1;
}
/**
* Formats an LDAP time string (e.g. from createTimestamp).
*
* @param String $time LDAP time value
* @return String formated time
*/
function formatLDAPTimestamp($time) {
$dateTime = parseLDAPTimestamp($time);
return $dateTime->format('d.m.Y H:i:s');
}
/**
* Parses an LDAP time stamp and returns a DateTime in current time zone.
*
* @param String $time LDAP time value
* @return DateTime time
*/
function parseLDAPTimestamp($time) {
// Windows format: 20140118093807.0Z
// OpenLDAP format: 20140118093807Z
// cut off "Z"
$timeNumbers = substr($time, 0, -1);
// for Windows cut off ".0"
if (strpos($timeNumbers, '.') == (strlen($timeNumbers) - 2)) {
$timeNumbers = substr($timeNumbers, 0, -2);
}
$dateTime = DateTime::createFromFormat('YmdHis', $timeNumbers, new DateTimeZone('UTC'));
$dateTime->setTimezone(getTimeZone());
return $dateTime;
}
/**
* Simple function to obfuscate strings.
*
* @param String $text text to obfuscate
*/
function obfuscateText($text) {
if (($text == null) || ($text == '')) {
return $text;
}
return str_rot13(base64_encode('LAM_OBFUSCATE:'.$text));
}
/**
* Simple function to deobfuscate strings.
*
* @param String $text text to deobfuscate
*/
function deobfuscateText($text) {
if (($text == null) || ($text == '')) {
return $text;
}
if (!isObfuscatedText($text)) {
return $text;
}
return str_replace('LAM_OBFUSCATE:', '', base64_decode(str_rot13($text)));
}
/**
* Checks if the given text is obfuscated.
*
* @param String $text text to check
* @return boolean obfuscated or not
*/
function isObfuscatedText($text) {
if (($text == null) || ($text == '')) {
return false;
}
$deob = base64_decode(str_rot13($text));
if (strpos($deob, 'LAM_OBFUSCATE:') === 0) {
return true;
}
else {
return false;
}
}
/**
* Extracts the RDN attribute name from a given DN.
*
* @param String $dn DN
* @return String RDN attribute name
*/
function extractRDNAttribute($dn) {
if ($dn == null) return null;
$parts = explode("=", substr($dn, 0, strpos($dn, ',')));
return $parts[0];
}
/**
* Extracts the RDN attribute value from a given DN.
*
* @param String $dn DN
* @return String RDN attribute value
*/
function extractRDNValue($dn) {
if (empty($dn)) return null;
if (strpos($dn, '=') === false) {
return $dn;
}
$dnWork = $dn;
if (strpos($dnWork, ',') !== false) {
$dnWork = substr($dn, 0, strpos($dnWork, ','));
}
$parts = explode("=", $dnWork);
return $parts[1];
}
/**
* Extracts the DN suffix from a given DN.
* E.g. ou=people,dc=test,dc=com will result in dc=test,dc=com.
*
* @param String $dn DN
* @return String DN suffix
*/
function extractDNSuffix($dn) {
if ($dn == null) return null;
return substr($dn, strpos($dn, ',')+1);
}
/**
* Sends the password mail.
*
* @param String $pwd new password
* @param array $user LDAP attributes of user
* @param String $recipient recipient address (optional, $user['mail'][0] used by default)
* @return array list of arrays that can be used to create status messages
*/
function sendPasswordMail($pwd, $user, $recipient = null) {
$user = array_change_key_case($user, CASE_LOWER);
// read mail data
$mailTo = $user['mail'][0];
if (!empty($recipient)) {
$mailTo = $recipient;
}
if (empty($mailTo)) {
logNewMessage(LOG_ERR, 'Unable to send password mail, no TO address set.');
return array(
array('ERROR', _('Unable to send mail!'))
);
}
$mailFrom = $_SESSION['config']->getLamProMailFrom();
$mailReplyTo = $_SESSION['config']->getLamProMailReplyTo();
$mailSubject = $_SESSION['config']->getLamProMailSubject();
$mailText = $_SESSION['config']->getLamProMailText();
$mailIsHTML = $_SESSION['config']->getLamProMailIsHTML();
$subject = $mailSubject;
$body = $mailText;
$body = str_replace('@@newPassword@@', $pwd, $body);
$results = array();
$found = preg_match('/\@\@[^\@]+\@\@/', $body, $results);
while ($found == 1) {
$attr = str_replace('@', '', $results[0]);
$value = '';
if (isset($user[strtolower($attr)][0])) {
if (is_array($user[strtolower($attr)])) {
$value = $user[strtolower($attr)][0];
}
else {
$value = $user[strtolower($attr)];
}
}
$body = str_replace('@@' . $attr . '@@', $value, $body);
$found = preg_match('/\@\@[^\@]+\@\@/', $body, $results);
}
$headerLines = createEMailHeaders($mailFrom, ($mailIsHTML == 'true'), $mailReplyTo);
$success = sendEMail($mailTo, $subject, $body, $headerLines);
if ($success) {
logNewMessage(LOG_DEBUG, 'Sent password mail to ' . $mailTo);
return array(
array('INFO', sprintf(_('Mail successfully sent to %s.'), htmlspecialchars($mailTo)))
);
}
else {
logNewMessage(LOG_ERR, 'Unable to send password mail to ' . htmlspecialchars($mailTo));
return array(
array('ERROR', _('Unable to send mail!'))
);
}
}
/**
* Generates the email header text for the given parameters.
*
* @param String $from FROM address
* @param boolean $isHTML mail is formatted as HTML or plain text
* @param String $replyTo reply-to address (optional)
* @param String $cc CC address
* @param String $bcc BCC address
* @return String header lines
*/
function createEMailHeaders($from, $isHTML, $replyTo = null, $cc = null, $bcc = null) {
$headerLines = "X-Mailer: LDAP Account Manager\r\n";
if (!empty($from)) {
$headerLines .= 'From: ' . encodeMailAddress($from) . "\r\n";
}
if (!empty($replyTo)) {
$headerLines .= 'Reply-To: ' . encodeMailAddress($replyTo) . "\r\n";
}
if (!empty($cc)) {
$headerLines .= 'Cc: ' . encodeMailAddress($cc) . "\r\n";
}
if (!empty($bcc)) {
$headerLines .= 'Bcc: ' . encodeMailAddress($bcc) . "\r\n";
}
$headerLines .= "MIME-Version: 1.0\r\n";
if ($isHTML) {
$headerLines .= "Content-type: text/html; charset=UTF-8\r\n";
}
else {
$headerLines .= "Content-type: text/plain; charset=UTF-8\r\n";
}
return $headerLines;
}
/**
* Encodes the email address for the header part of an email.
*
* @param String $address email address
* @return String encoded mail address
*/
function encodeMailAddress($address) {
$matches = array();
// if the email contains a name part then base64 encode it
if (preg_match('/^(.*)<(.*)>$/', $address, $matches)) {
return base64EncodeForEMail($matches[1]) . ' <' . $matches[2] . '>';
}
return $address;
}
/**
* Returns a base64 encoded string of the given values in a fomat that is used in emails.
*
* @param String $value value to encode
* @return String base64 encoded value
*/
function base64EncodeForEMail($value) {
return '=?UTF-8?B?' . base64_encode($value) . '?=';
}
/**
* Sends out an email.
*
* @param String $to TO address
* @param String $subject email subject
* @param String $text mail body (with \r\n EOL)
* @param String $headers header lines (with \r\n EOL)
*/
function sendEMail($to, $subject, $text, $headers) {
if (!empty($_SESSION['cfgMain']->mailEOL) && ($_SESSION['cfgMain']->mailEOL === 'unix')) {
$text = str_replace("\r\n", "\n", $text);
$headers = str_replace("\r\n", "\n", $headers);
}
logNewMessage(LOG_DEBUG, "Send mail to $to\n" . $text);
return mail($to, base64EncodeForEMail($subject), $text, $headers);
}
/**
* Caches module objects.
* This improves performance if the same module does not need to be created multiple times (calling get_metaData() each time).
*
* @author Roland Gruber
*/
class moduleCache {
/** module cache ("name:scope" => module) */
private static $cache = array();
/**
* Returns a new/cached module with the given name and scope.
*
* @param String $name module name
* @param String $scope module scope (e.g. user)
*/
public static function getModule($name, $scope) {
if (isset(moduleCache::$cache[$name . ':' . $scope])) {
return moduleCache::$cache[$name . ':' . $scope];
}
else {
moduleCache::$cache[$name . ':' . $scope] = new $name($scope);
return moduleCache::$cache[$name . ':' . $scope];
}
}
}
/**
* Returns a random number.
*
* @return int random number
*/
function getRandomNumber() {
if (function_exists('openssl_random_pseudo_bytes')) {
return abs(hexdec(bin2hex(openssl_random_pseudo_bytes(5))));
}
return abs(mt_rand());
}
/**
* Connects to the LDAP server and extracts the certificates.
*
* @param String $server server name
* @param String $port server port
* @return mixed false on error and certificate if extracted successfully
*/
function getLDAPSSLCertificate($server, $port) {
$stream = @stream_context_create(array("ssl" => array("capture_peer_cert_chain" => true, "verify_peer" => false, "allow_self_signed" => true)));
if (!$stream) {
return false;
}
$client = @stream_socket_client('ssl://' . $server . ':' . $port, $errno, $errstr, 30, STREAM_CLIENT_CONNECT, $stream);
if (!$client) {
return false;
}
$context = stream_context_get_params($client);
if (!isset($context['options']['ssl']['peer_certificate_chain'])) {
return false;
}
$finalPEM = '';
for ($i = 0; $i < sizeof($context['options']['ssl']['peer_certificate_chain']); $i++) {
$cert = $context['options']['ssl']['peer_certificate_chain'][$i];
$pemData = null;
$pemResult = @openssl_x509_export($cert, $pemData);
if ($pemResult) {
$finalPEM .= $pemData;
}
else {
return false;
}
}
return $finalPEM;
}
/**
* Returns the extended LDAP error message if any.
*
* @param handle $server LDAP server handle
* @return String error message
*/
function getExtendedLDAPErrorMessage($server) {
$ldapMsg = null;
ldap_get_option($server, LDAP_OPT_ERROR_STRING, $ldapMsg);
if (empty($ldapMsg)) {
return null;
}
return $ldapMsg;
}
/**
* Returns the default error message to display on the web page.
* HTML special characters are already escaped.
*
* @param handle $server LDAP server handle
* @return String error message
*/
function getDefaultLDAPErrorString($server) {
$extError = htmlspecialchars(getExtendedLDAPErrorMessage($server));
// Active Directory message translations
if ((strpos($extError, 'DSID-031A120C') !== false) && (strpos($extError, '5003') !== false)) {
logNewMessage(LOG_DEBUG, 'Password change failed because of ' . $extError);
$extError = _('Your password does not meet the password strength qualifications. Please retry with another one.');
}
$message = _('LDAP error, server says:') . ' ' . ldap_error($server);
if (!empty($extError)) {
$message .= ' - ' . $extError;
}
return $message;
}
/**
* Returns the URL under which the page was loaded.
* This includes any GET parameters set.
*
* @return String URL
*/
function getCallingURL() {
$url = null;
if (!empty($_SERVER['HTTP_HOST']) && !empty($_SERVER['REQUEST_URI'])) {
$proto = 'http://';
if (!empty($_SERVER['HTTPS']) && ($_SERVER['HTTPS'] != 'off')) {
$proto = 'https://';
}
$url = $proto . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'];
}
elseif (!empty($_SERVER['HTTP_REFERER'])) {
$url = $_SERVER['HTTP_REFERER'];
}
logNewMessage(LOG_DEBUG, 'Calling URL detected as ' . $url);
return $url;
}
/**
* Returns the offset in hours from configured time zone to GMT.
*
* @return int offset
*/
function getTimeZoneOffsetHours() {
$dtz = getTimeZone();
return round($dtz->getOffset(new DateTime('UTC')) / 3600);
}
/**
* Returns the configured time zone.
*
* @return DateTimeZone time zone
*/
function getTimeZone() {
$timeZoneName = 'UTC';
if (!empty($_SESSION['config'])) {
$timeZoneName = $_SESSION['config']->getTimeZone();
}
elseif (!empty($_SESSION['selfServiceProfile']->timeZone)) {
$timeZoneName = $_SESSION['selfServiceProfile']->timeZone;
}
return new DateTimeZone($timeZoneName);
}
/**
* Returns the current time in formatted form.
*
* @param unknown $format format to use (e.g. 'Y-m-d H:i:s')
*/
function getFormattedTime($format) {
$time = new DateTime(null, getTimeZone());
return $time->format($format);
}
/**
* Formats a number of seconds to a more human readable format with minutes, hours, etc.
* E.g. 70 seconds will return 1m10s.
*
* @param int $numSeconds number of seconds
* @return String formated number
*/
function formatSecondsToShortFormat($numSeconds) {
if (empty($numSeconds)) {
return '';
}
$seconds = $numSeconds % 60;
$seconds = ($seconds == 0) ? '' : $seconds . 's';
$minutes = floor(($numSeconds % 3600) / 60);
$minutes = ($minutes == 0) ? '' : $minutes . 'm';
$hours = floor(($numSeconds % 86400) / 3600);
$hours = ($hours == 0) ? '' : $hours . 'h';
$days = floor($numSeconds / 86400);
$days = ($days == 0) ? '' : $days . 'd';
return $days . $hours . $minutes . $seconds;
}
/**
* Unformats text like 1m10s back to number of seconds.
*
* @param String $text formatted text
* @return int number of seconds
*/
function unformatShortFormatToSeconds($text) {
if (empty($text)) {
return $text;
}
$matches = array();
if (preg_match('/^([0-9]+d)?([0-9]+h)?([0-9]+m)?([0-9]+s)?$/', $text, $matches)) {
$newValue = 0;
if (!empty($matches[1])) {
$newValue += $matches[1] * 86400;
}
if (!empty($matches[2])) {
$newValue += $matches[2] * 3600;
}
if (!empty($matches[3])) {
$newValue += $matches[3] * 60;
}
if (!empty($matches[4])) {
$newValue += $matches[4];
}
return $newValue;
}
return $text;
}
/**
* Validates the Google reCAPTCHA input.
*
* @param String $secretKey secret key
* @return boolean valid
*/
function validateReCAPTCHA($secretKey) {
$url = 'https://www.google.com/recaptcha/api/siteverify';
$vars = array('secret' => $secretKey, 'response' => $_POST['g-recaptcha-response']);
$options = array(
'http' => array(
'header' => "Content-type: application/x-www-form-urlencoded\r\n",
'method' => 'POST',
'content' => http_build_query($vars)
)
);
$context = stream_context_create($options);
$result = file_get_contents($url, false, $context);
if ($result === FALSE) {
logNewMessage(LOG_ERR, 'reCAPTCHA validation failed, invalid server response.');
return false;
}
$responseJSON = json_decode($result);
return $responseJSON->{'success'} === true;
}
/**
* Checks if the user is logged in. Stops script execution if not.
*
* @param boolean $check2ndFactor check if the 2nd factor was provided if required
*/
function enforceUserIsLoggedIn($check2ndFactor = true) {
if ((!isset($_SESSION['loggedIn']) || ($_SESSION['loggedIn'] !== true)) && empty($_SESSION['selfService_clientPassword'])) {
logNewMessage(LOG_WARNING, 'Detected unauthorized access to page that requires login: ' . $_SERVER["SCRIPT_FILENAME"]);
die();
}
if ($check2ndFactor && isset($_SESSION['2factorRequired'])) {
die();
logNewMessage(LOG_WARNING, 'Detected unauthorized access to page that requires login (2nd factor not provided): ' . $_SERVER["SCRIPT_FILENAME"]);
}
}
/**
* Prints the content of the header part.
*
* @param string $title page title
* @param string $prefix prefix to LAM main folder (e.g. "..")
*/
function printHeaderContents($title, $prefix) {
echo '';
echo '';
echo $title;
echo '';
// include responsive CSS
$cssDirName = dirname(__FILE__) . '/../style/responsive';
$cssDir = dir($cssDirName);
$cssFiles = array();
$cssEntry = $cssDir->read();
while ($cssEntry !== false) {
if (substr($cssEntry, strlen($cssEntry) - 4, 4) == '.css') {
$cssFiles[] = $cssEntry;
}
$cssEntry = $cssDir->read();
}
sort($cssFiles);
foreach ($cssFiles as $cssEntry) {
echo "";
}
// include all other CSS files
$cssDirName = dirname(__FILE__) . '/../style';
$cssDir = dir($cssDirName);
$cssFiles = array();
$cssEntry = $cssDir->read();
while ($cssEntry !== false) {
if (substr($cssEntry, strlen($cssEntry) - 4, 4) == '.css') {
$cssFiles[] = $cssEntry;
}
$cssEntry = $cssDir->read();
}
sort($cssFiles);
foreach ($cssFiles as $cssEntry) {
echo "";
}
echo '';
echo '';
}
/**
* Prints script tags for all LAM JS files.
*
* @param string $prefix prefix to LAM main folder (e.g. "..")
*/
function printJsIncludes($prefix) {
$jsDirName = dirname(__FILE__) . '/../templates/lib';
$jsDir = dir($jsDirName);
$jsFiles = array();
$jsEntry = $jsDir->read();
while ($jsEntry !== false) {
if ((substr($jsEntry, strlen($jsEntry) - 3, 3) == '.js') || (substr($jsEntry, strlen($jsEntry) - 4, 4) == '.php')) {
$jsFiles[] = $jsEntry;
}
$jsEntry = $jsDir->read();
}
sort($jsFiles);
foreach ($jsFiles as $jsEntry) {
echo "\n";
}
}
/**
* LAM exception with title and message.
*
* @author Roland Gruber
*/
class LAMException extends Exception {
private $title;
/**
* Constructor.
*
* @param string $title title
* @param string $message message (optional)
* @param Exception $cause (optional)
*/
public function __construct($title, $message = null, $cause = null) {
parent::__construct($message, null, $cause);
$this->title = $title;
}
/**
* Returns the message title.
*
* @return string title
*/
public function getTitle() {
return $this->title;
}
}
?>