*
'ldap.example.com' - connect to server on ldap.example.com address
* 'ldaps://ldap.example.com' - connect to server on ldap.example.com address
* and use SSL encrypted connection to default LDAPs port.
*
* defaults to imap server address.
* @link http://www.php.net/ldap-connect
* @global string $cpw_ldap_server
*/
global $cpw_ldap_server;
$cpw_ldap_server=$imapServerAddress;
/**
* Port of LDAP server.
* Used only when $cpw_ldap_server specifies IP address or DNS name.
* @global integer $cpw_ldap_port
*/
global $cpw_ldap_port;
$cpw_ldap_port=389;
/**
* LDAP basedn that is used for binding to LDAP server.
* this option must be set to correct value.
* @global string $cpw_ldap_basedn;
*/
global $cpw_ldap_basedn;
$cpw_ldap_basedn='';
/**
* LDAP connection options
* @link http://www.php.net/ldap-set-option
* @global array $cpw_ldap_connect_opts
*/
global $cpw_ldap_connect_opts;
$cpw_ldap_connect_opts=array();
/**
* Controls use of starttls on LDAP connection.
* Requires PHP 4.2+, PHP LDAP extension with SSL support and
* PROTOCOL_VERSION => 3 setting in $cpw_ldap_connect_opts
* @global boolean $cpw_ldap_use_tls
*/
global $cpw_ldap_use_tls;
$cpw_ldap_use_tls=false;
/**
* BindDN that should be able to search LDAP directory and find DN used by user.
* Uses anonymous bind if set to empty string. You should not use DN with write
* access to LDAP directory here. Write access is not required.
* @global string $cpw_ldap_binddn
*/
global $cpw_ldap_binddn;
$cpw_ldap_binddn='';
/**
* password used for $cpw_ldap_binddn
* @global string $cpw_ldap_bindpw
*/
global $cpw_ldap_bindpw;
$cpw_ldap_bindpw='';
/**
* BindDN that should be able to change password.
* WARNING: sometimes user has enough privileges to change own password.
* If you leave default value, plugin will try to connect with DN that
* is detected in $cpw_ldap_username_attr=$username search and current
* user password will be used for authentication.
* @global string $cpw_ldap_admindn
*/
global $cpw_ldap_admindn;
$cpw_ldap_admindn='';
/**
* password used for $cpw_ldap_admindn
* @global string $cpw_ldap_adminpw
*/
global $cpw_ldap_adminpw;
$cpw_ldap_adminpw='';
/**
* LDAP attribute that stores username.
* username entry should be unique for $cpw_ldap_basedn
* @global string $cpw_ldap_userid_attr
*/
global $cpw_ldap_userid_attr;
$cpw_ldap_userid_attr='uid';
/**
* crypto that is used to encode new password
* If set to empty string, system tries to keep same encoding/hashing algorithm
* @global string $cpw_ldap_default_crypto
*/
global $cpw_ldap_default_crypto;
$cpw_ldap_default_crypto='';
/** end of default config */
/** configuration overrides from config file */
if (isset($cpw_ldap['server'])) $cpw_ldap_server=$cpw_ldap['server'];
if (isset($cpw_ldap['port'])) $cpw_ldap_port=$cpw_ldap['port'];
if (isset($cpw_ldap['basedn'])) $cpw_ldap_basedn=$cpw_ldap['basedn'];
if (isset($cpw_ldap['connect_opts'])) $cpw_ldap_connect_opts=$cpw_ldap['connect_opts'];
if (isset($cpw_ldap['use_tls'])) $cpw_ldap_use_tls=$cpw_ldap['use_tls'];
if (isset($cpw_ldap['binddn'])) $cpw_ldap_binddn=$cpw_ldap['binddn'];
if (isset($cpw_ldap['bindpw'])) $cpw_ldap_bindpw=$cpw_ldap['bindpw'];
if (isset($cpw_ldap['admindn'])) $cpw_ldap_admindn=$cpw_ldap['admindn'];
if (isset($cpw_ldap['adminpw'])) $cpw_ldap_adminpw=$cpw_ldap['adminpw'];
if (isset($cpw_ldap['userid_attr'])) $cpw_ldap_userid_attr=$cpw_ldap['userid_attr'];
if (isset($cpw_ldap['default_crypto'])) $cpw_ldap_default_crypto=$cpw_ldap['default_crypto'];
/** make sure that setting does not contain mapping */
$cpw_ldap_server=sqimap_get_user_server($cpw_ldap_server,$username);
/**
* Adding plugin hooks
*/
global $squirrelmail_plugin_hooks;
$squirrelmail_plugin_hooks['change_password_dochange']['ldap'] =
'cpw_ldap_dochange';
$squirrelmail_plugin_hooks['change_password_init']['ldap'] =
'cpw_ldap_init';
/**
* Makes sure that required functions and configuration options are set.
*/
function cpw_ldap_init() {
global $oTemplate, $cpw_ldap_basedn;
// set initial value for error tracker
$cpw_ldap_initerr=false;
// check for ldap support in php
if (! function_exists('ldap_connect')) {
error_box(_("Current configuration requires LDAP support in PHP."));
$cpw_ldap_initerr=true;
}
// chech required configuration settings.
if ($cpw_ldap_basedn=='') {
error_box(_("Plugin is not configured correctly."));
$cpw_ldap_initerr=true;
}
// if error var is positive, close html and stop execution
if ($cpw_ldap_initerr) {
$oTemplate->display('footer.tpl');
exit;
}
}
/**
* Changes password. Main function attached to hook
* @param array $data The username/curpw/newpw data.
* @return array Array of error messages.
*/
function cpw_ldap_dochange($data) {
global $cpw_ldap_server, $cpw_ldap_port, $cpw_ldap_basedn,
$cpw_ldap_connect_opts,$cpw_ldap_use_tls,
$cpw_ldap_binddn, $cpw_ldap_bindpw,
$cpw_ldap_admindn, $cpw_ldap_adminpw;
// unfortunately, we can only pass one parameter to a hook function,
// so we have to pass it as an array.
$username = $data['username'];
$curpw = $data['curpw'];
$newpw = $data['newpw'];
// globalize current password.
$msgs = array();
/**
* connect to LDAP server
* hide ldap_connect() function call errors, because they are processed in script.
* any script execution error is treated as critical, error messages are dumped
* to $msgs and LDAP connection is closed with ldap_unbind(). all ldap_unbind()
* errors are suppressed. Any other error suppression should be explained.
*/
$cpw_ldap_con=@ldap_connect($cpw_ldap_server);
if ($cpw_ldap_con) {
$cpw_ldap_con_err=false;
// set connection options
if (is_array($cpw_ldap_connect_opts) && $cpw_ldap_connect_opts!=array()) {
// ldap_set_option() is available only with openldap 2.x and netscape directory sdk.
if (function_exists('ldap_set_option')) {
foreach ($cpw_ldap_connect_opts as $opt => $value) {
// Make sure that constant is defined defore using it.
if (defined('LDAP_OPT_' . $opt)) {
// ldap_set_option() should not produce E_NOTICE or E_ALL errors and does not modify ldap_error().
// leave it without @ in order to see any weird errors
if (! ldap_set_option($cpw_ldap_con,constant('LDAP_OPT_' . $opt),$value)) {
// set error message
array_push($msgs,sprintf(_("Setting of LDAP connection option %s to value %s failed."),$opt,$value));
$cpw_ldap_con_err=true;
}
} else {
array_push($msgs,sprintf(_("Incorrect LDAP connection option: %s"),$opt));
$cpw_ldap_con_err=true;
}
}
} else {
array_push($msgs,_("Current PHP LDAP extension does not allow use of ldap_set_option() function."));
$cpw_ldap_con_err=true;
}
}
// check for connection errors and stop execution if something is wrong
if ($cpw_ldap_con_err) {
@ldap_unbind($cpw_ldap_con);
return $msgs;
}
// enable ldap starttls
if ($cpw_ldap_use_tls &&
check_php_version(4,2,0) &&
isset($cpw_ldap_connect_opts['PROTOCOL_VERSION']) &&
$cpw_ldap_connect_opts['PROTOCOL_VERSION']>=3 &&
function_exists('ldap_start_tls')) {
// suppress ldap_start_tls errors and process error messages
if (! @ldap_start_tls($cpw_ldap_con)) {
array_push($msgs,
_("Unable to use TLS."),
sprintf(_("Error: %s"),ldap_error($cpw_ldap_con)));
$cpw_ldap_con_err=true;
}
} elseif ($cpw_ldap_use_tls) {
array_push($msgs,_("Unable to use LDAP TLS in current setup."));
$cpw_ldap_con_err=true;
}
// check for connection errors and stop execution if something is wrong
if ($cpw_ldap_con_err) {
@ldap_unbind($cpw_ldap_con);
return $msgs;
}
/**
* Bind to LDAP (use anonymous bind or unprivileged DN) in order to get user's DN
* hide ldap_bind() function call errors, because errors are processed in script
*/
if ($cpw_ldap_binddn!='') {
// authenticated bind
$cpw_ldap_binding=@ldap_bind($cpw_ldap_con,$cpw_ldap_binddn,$cpw_ldap_bindpw);
} else {
// anonymous bind
$cpw_ldap_binding=@ldap_bind($cpw_ldap_con);
}
// check ldap_bind errors
if (! $cpw_ldap_binding) {
array_push($msgs,
_("Unable to bind to LDAP server."),
sprintf(_("Server replied: %s"),ldap_error($cpw_ldap_con)));
@ldap_unbind($cpw_ldap_con);
return $msgs;
}
// find userdn
$cpw_ldap_search_err=cpw_ldap_uid_search($cpw_ldap_con,$cpw_ldap_basedn,$msgs,$cpw_ldap_res,$cpw_ldap_userdn);
// check for search errors and stop execution if something is wrong
if (! $cpw_ldap_search_err) {
@ldap_unbind($cpw_ldap_con);
return $msgs;
}
/**
* unset $cpw_ldap_res2 variable, if such var exists.
* $cpw_ldap_res2 object can be set in two places and second place checks,
* if object was created in first place. if variable name matches (somebody
* uses $cpw_ldap_res2 in code or globals), incorrect validation might
* cause script errors.
*/
if (isset($cpw_ldap_res2)) unset($cpw_ldap_res2);
// rebind as userdn or admindn
if ($cpw_ldap_admindn!='') {
// admindn bind
$cpw_ldap_binding=@ldap_bind($cpw_ldap_con,$cpw_ldap_admindn,$cpw_ldap_adminpw);
if ($cpw_ldap_binding) {
// repeat search in order to get password info. Password info should be unavailable in unprivileged bind.
$cpw_ldap_search_err=cpw_ldap_uid_search($cpw_ldap_con,$cpw_ldap_basedn,$msgs,$cpw_ldap_res2,$cpw_ldap_userdn);
// check for connection errors and stop execution if something is wrong
if (! $cpw_ldap_search_err) {
@ldap_unbind($cpw_ldap_con);
// errors are added to msgs by cpw_ldap_uid_search()
return $msgs;
}
// we should check user password here.
// suppress errors and check value returned by function call
$cpw_ldap_cur_pass_array=@ldap_get_values($cpw_ldap_con,
ldap_first_entry($cpw_ldap_con,$cpw_ldap_res2),'userpassword');
// check if ldap_get_values() have found userpassword field
if (! $cpw_ldap_cur_pass_array) {
array_push($msgs,_("Unable to find user's password attribute."));
return $msgs;
}
// compare passwords
if (! cpw_ldap_compare_pass($cpw_ldap_cur_pass_array[0],$curpw,$msgs)) {
@ldap_unbind($cpw_ldap_con);
// errors are added to $msgs by cpw_ldap_compare_pass()
return $msgs;
}
}
} else {
$cpw_ldap_binding=@ldap_bind($cpw_ldap_con,$cpw_ldap_userdn,$curpw);
}
if (! $cpw_ldap_binding) {
array_push($msgs,
_("Unable to rebind to LDAP server."),
sprintf(_("Server replied: %s"),ldap_error($cpw_ldap_con)));
@ldap_unbind($cpw_ldap_con);
return $msgs;
}
// repeat search in order to get password info
if (! isset($cpw_ldap_res2))
$cpw_ldap_search_err=cpw_ldap_uid_search($cpw_ldap_con,$cpw_ldap_basedn,$msgs,$cpw_ldap_res2,$cpw_ldap_userdn);
// check for connection errors and stop execution if something is wrong
if (! $cpw_ldap_search_err) {
@ldap_unbind($cpw_ldap_con);
return $msgs;
}
// getpassword. suppress errors and check value returned by function call
$cpw_ldap_cur_pass_array=@ldap_get_values($cpw_ldap_con,ldap_first_entry($cpw_ldap_con,$cpw_ldap_res2),'userpassword');
// check if ldap_get_values() have found userpassword field.
// Error differs from previous one, because user managed to authenticate.
if (! $cpw_ldap_cur_pass_array) {
array_push($msgs,_("LDAP server uses different attribute to store user's password."));
return $msgs;
}
// encrypt new password (old password is needed for plaintext encryption detection)
$cpw_ldap_new_pass=cpw_ldap_encrypt_pass($newpw,$cpw_ldap_cur_pass_array[0],$msgs,$curpw);
if (! $cpw_ldap_new_pass) {
@ldap_unbind($cpw_ldap_con);
return $msgs;
}
// set new password. suppress ldap_modify errors. script checks and displays ldap_modify errors.
$ldap_pass_change=@ldap_modify($cpw_ldap_con,$cpw_ldap_userdn,array('userpassword'=>$cpw_ldap_new_pass));
// check if ldap_modify was successful
if(! $ldap_pass_change) {
array_push($msgs,ldap_error($cpw_ldap_con));
}
// close connection
@ldap_unbind($cpw_ldap_con);
} else {
array_push($msgs,_("Unable to connect to LDAP server."));
}
return $msgs;
}
/** backend support functions **/
/**
* Sanitizes LDAP query strings.
* original code - ldapquery plugin.
* See rfc2254
* @link http://www.faqs.org/rfcs/rfc2254.html
* @param string $string
* @return string sanitized string
*/
function cpw_ldap_specialchars($string) {
$sanitized=array('\\' => '\5c',
'*' => '\2a',
'(' => '\28',
')' => '\29',
"\x00" => '\00');
return str_replace(array_keys($sanitized),array_values($sanitized),$string);
}
/**
* returns crypto algorithm used in password.
* @param string $pass encrypted/hashed password
* @return string lowercased crypto algorithm name
*/
function cpw_ldap_get_crypto($pass,$curpass='') {
$ret = false;
if (preg_match("/^\{(.+)\}+/",$pass,$crypto)) {
$ret=strtolower($crypto[1]);
}
if ($ret=='crypt') {
// {CRYPT} can be standard des crypt, extended des crypt, md5 crypt or blowfish
// depends on first salt symbols (ext_des = '_', md5 = '$1$', blowfish = '$2')
// and length of salt (des = 2 chars, ext_des = 9, md5 = 12, blowfish = 16).
if (preg_match("/^\{crypt\}\\\$1\\\$+/i",$pass)) {
$ret='md5crypt';
} elseif (preg_match("/^\{crypt\}\\\$2+/i",$pass)) {
$ret='blowfish';
} elseif (preg_match("/^\{crypt\}_+/i",$pass)) {
$ret='extcrypt';
}
}
// maybe password is plaintext
if (! $ret && $curpass!='' && $pass==$curpass) $ret='plaintext';
return $ret;
}
/**
* Search LDAP for user id.
* @param object $ldap_con ldap connection
* @param string $ldap_basedn ldap basedn
* @param array $msgs error messages
* @param object $results ldap search results
* @param string $userdn DN of found entry
* @param boolean $onlyone require unique search results
* @return boolean false if connection failed.
*/
function cpw_ldap_uid_search($ldap_con,$ldap_basedn,&$msgs,&$results,&$userdn,$onlyone=true) {
global $cpw_ldap_userid_attr,$username;
$ret=true;
$results=ldap_search($ldap_con,$ldap_basedn,cpw_ldap_specialchars($cpw_ldap_userid_attr . '=' . $username));
if (! $results) {
array_push($msgs,
_("Unable to find user's DN."),
_("Search error."),
sprintf(_("Error: %s"),ldap_error($ldap_con)));
$ret=false;
} elseif ($onlyone && ldap_count_entries($ldap_con,$results)>1) {
array_push($msgs,_("Multiple userid matches found."));
$ret=false;
} elseif (! $userdn = ldap_get_dn($ldap_con,ldap_first_entry($ldap_con,$results))) {
// ldap_get_dn() returned error
array_push($msgs,
_("Unable to find user's DN."),
_("ldap_get_dn error."));
$ret=false;
}
return $ret;
}
/**
* Encrypts LDAP password
*
* if $cpw_ldap_default_crypto is set to empty string or $same_crypto is set,
* uses same crypto as in old password.
* See phpldapadmin password_hash() function
* @link http://phpldapadmin.sf.net
* @param string $pass string that has to be encrypted/hashed
* @param string $cur_pass_hash old password hash
* @param array $msgs error message
* @param string $curpass current password. Used for plaintext password detection.
* @return string encrypted/hashed password or false
*/
function cpw_ldap_encrypt_pass($pass,$cur_pass_hash,&$msgs,$curpass='') {
global $cpw_ldap_default_crypto;
// which crypto should be used to encode/hash password
if ($cpw_ldap_default_crypto=='') {
$ldap_crypto=cpw_ldap_get_crypto($cur_pass_hash,$curpass);
} else {
$ldap_crypto=$cpw_ldap_default_crypto;
}
return cpw_ldap_password_hash($pass,$ldap_crypto,$msgs);
}
/**
* create hashed password
* @param string $pass plain text password
* @param string $crypto used crypto algorithm
* @param array $msgs array used for error messages
* @param string $forced_salt salt that should be used during hashing.
* Is used only when is not set to empty string. Salt should be formated
* according to $crypto requirements.
* @return hashed password or false.
*/
function cpw_ldap_password_hash($pass,$crypto,&$msgs,$forced_salt='') {
// set default return code
$ret=false;
// lowercase crypto just in case
$crypto=strtolower($crypto);
// extra symbols used for random string in crypt salt
// squirrelmail GenerateRandomString() adds alphanumerics with third argument = 7.
$extra_salt_chars='./';
// encrypt/hash password
switch ($crypto) {
case 'md4':
// minimal requirement = php with mhash extension
if ( function_exists( 'mhash' ) && defined('MHASH_MD4')) {
$ret = '{MD4}' . base64_encode( mhash( MHASH_MD4, $pass) );
} else {
array_push($msgs,
sprintf(_("Unsupported crypto: %s"),'md4'),
_("PHP mhash extension is missing or does not support selected crypto."));
}
break;
case 'md5':
$ret='{MD5}' . base64_encode(pack('H*',md5($pass)));
break;
case 'smd5':
// minimal requirement = mhash extension with md5 support and php 4.0.4.
if( function_exists( 'mhash' ) && function_exists( 'mhash_keygen_s2k' ) && defined('MHASH_MD5')) {
sq_mt_seed( (double) microtime() * 1000000 );
if ($forced_salt!='') {
$salt=$forced_salt;
} else {
$salt = mhash_keygen_s2k( MHASH_MD5, $pass, substr( pack( "h*", md5( mt_rand() ) ), 0, 8 ), 4 );
}
$ret = "{SMD5}".base64_encode( mhash( MHASH_MD5, $pass.$salt ).$salt );
} else {
// use two array_push calls in order to display messages in different lines.
array_push($msgs,
sprintf(_("Unsupported crypto: %s"),'smd5'),
_("PHP mhash extension is missing or does not support selected crypto."));
}
break;
case 'rmd160':
// minimal requirement = php with mhash extension
if ( function_exists( 'mhash' ) && defined('MHASH_RIPEMD160')) {
$ret = '{RMD160}' . base64_encode( mhash( MHASH_RIPEMD160, $pass) );
} else {
array_push($msgs,
sprintf(_("Unsupported crypto: %s"),'ripe-md160'),
_("PHP mhash extension is missing or does not support selected crypto."));
}
break;
case 'sha':
// minimal requirement = php 4.3.0+ or php with mhash extension
if ( function_exists('sha1') && defined('MHASH_SHA1')) {
// use php 4.3.0+ sha1 function, if it is available.
$ret = '{SHA}' . base64_encode(pack('H*',sha1($pass)));
} elseif( function_exists( 'mhash' ) ) {
$ret = '{SHA}' . base64_encode( mhash( MHASH_SHA1, $pass) );
} else {
array_push($msgs,
sprintf(_("Unsupported crypto: %s"),'sha'),
_("PHP mhash extension is missing or does not support selected crypto."));
}
break;
case 'ssha':
// minimal requirement = mhash extension and php 4.0.4
if( function_exists( 'mhash' ) && function_exists( 'mhash_keygen_s2k' ) && defined('MHASH_SHA1')) {
sq_mt_seed( (double) microtime() * 1000000 );
if ($forced_salt!='') {
$salt=$forced_salt;
} else {
$salt = mhash_keygen_s2k( MHASH_SHA1, $pass, substr( pack( "h*", md5( mt_rand() ) ), 0, 8 ), 4 );
}
$ret = "{SSHA}".base64_encode( mhash( MHASH_SHA1, $pass.$salt ).$salt );
} else {
array_push($msgs,
sprintf(_("Unsupported crypto: %s"),'ssha'),
_("PHP mhash extension is missing or does not support selected crypto."));
}
break;
case 'crypt':
if (defined('CRYPT_STD_DES') && CRYPT_STD_DES==1) {
$ret = '{CRYPT}' . crypt($pass,GenerateRandomString(2,$extra_salt_chars,7));
} else {
array_push($msgs,
sprintf(_("Unsupported crypto: %s"),'crypt'),
_("System crypt library doesn't support standard DES crypt."));
}
break;
case 'md5crypt':
// check if crypt() supports md5
if (defined('CRYPT_MD5') && CRYPT_MD5==1) {
$ret = '{CRYPT}' . crypt($pass,'$1$' . GenerateRandomString(9,$extra_salt_chars,7));
} else {
array_push($msgs,
sprintf(_("Unsupported crypto: %s"),'md5crypt'),
_("System crypt library doesn't have MD5 support."));
}
break;
case 'extcrypt':
// check if crypt() supports extended des
if (defined('CRYPT_EXT_DES') && CRYPT_EXT_DES==1) {
$ret = '{CRYPT}' . crypt($pass,'_' . GenerateRandomString(8,$extra_salt_chars,7));
} else {
array_push($msgs,
sprintf(_("Unsupported crypto: %s"),'ext_des'),
_("System crypt library doesn't support extended DES crypt."));
}
break;
case 'blowfish':
// check if crypt() supports blowfish
if (defined('CRYPT_BLOWFISH') && CRYPT_BLOWFISH==1) {
$ret = '{CRYPT}' . crypt($pass,'$2a$12$' . GenerateRandomString(13,$extra_salt_chars,7));
} else {
array_push($msgs,
sprintf(_("Unsupported crypto: %s"),'Blowfish'),
_("System crypt library doesn't have Blowfish support."));
}
break;
case 'plaintext':
// clear plain text password
$ret=$pass;
break;
default:
array_push($msgs,sprintf(_("Unsupported crypto: %s"),
(is_string($ldap_crypto) ? htmlspecialchars($ldap_crypto) : _("unknown"))));
}
return $ret;
}
/**
* compares two passwords
* Code reuse. See phpldapadmin password_compare() function.
* Some parts of code was rewritten to backend specifics.
* @link http://phpldapadmin.sf.net
* @param string $pass_hash hashed password string with password type indicators
* @param string $pass_clear plain text password
* @param array $msgs error messages
* @return boolean true, if passwords match
*/
function cpw_ldap_compare_pass($pass_hash,$pass_clear,&$msgs) {
$ret=false;
if( preg_match( "/{([^}]+)}(.*)/", $pass_hash, $cypher ) ) {
$pass_hash = $cypher[2];
$_cypher = strtolower($cypher[1]);
} else {
$_cypher = NULL;
}
switch( $_cypher ) {
case 'ssha':
// Salted SHA
// check for mhash support
if ( function_exists('mhash') && defined('MHASH_SHA1')) {
$hash = base64_decode($pass_hash);
$salt = substr($hash, -4);
$new_hash = base64_encode( mhash( MHASH_SHA1, $pass_clear.$salt).$salt );
if( strcmp( $pass_hash, $new_hash ) == 0 )
$ret=true;
} else {
array_push($msgs,
_("Unable to validate user's password."),
_("PHP mhash extension is missing or does not support selected crypto."));
}
break;
case 'smd5':
// Salted MD5
// check for mhash support
if ( function_exists('mhash') && defined('MHASH_MD5')) {
$hash = base64_decode($pass_hash);
$salt = substr($hash, -4);
$new_hash = base64_encode( mhash( MHASH_MD5, $pass_clear.$salt).$salt );
if( strcmp( $pass_hash, $new_hash ) == 0)
$ret=true;
} else {
array_push($msgs,
_("Unable to validate user's password."),
_("PHP mhash extension is missing or does not support selected crypto."));
}
break;
case 'sha':
// SHA crypted passwords
if( strcasecmp( cpw_ldap_password_hash($pass_clear,'sha',$msgs), "{SHA}".$pass_hash ) == 0)
$ret=true;
break;
case 'rmd160':
// RIPE-MD160 crypted passwords
if( strcasecmp( cpw_ldap_password_hash($pass_clear,'rmd160',$msgs), "{RMD160}".$pass_hash ) == 0 )
$ret=true;
break;
case 'md5':
// MD5 crypted passwords
if( strcasecmp( cpw_ldap_password_hash($pass_clear,'md5',$msgs), "{MD5}".$pass_hash ) == 0 )
$ret=true;
break;
case 'md4':
// MD4 crypted passwords
if( strcasecmp( cpw_ldap_password_hash($pass_clear,'md4',$msgs), "{MD4}".$pass_hash ) == 0 )
$ret=true;
break;
case 'crypt':
// Crypt passwords
if( preg_match( "/^\\\$2+/",$pass_hash ) ) { // Check if it's blowfish crypt
// check CRYPT_BLOWFISH here.
// ldap server might support it, but php can be on other OS
if (defined('CRYPT_BLOWFISH') && CRYPT_BLOWFISH==1) {
if( crypt( $pass_clear, $pass_hash ) == $pass_hash )
$ret=true;
} else {
array_push($msgs,
_("Unable to validate user's password."),
_("Blowfish is not supported by webserver's system crypt library."));
}
} elseif( strstr( $pass_hash, '$1$' ) ) { // Check if it's md5 crypt
// check CRYPT_MD5 here.
// ldap server might support it, but php might be on other OS
if (defined('CRYPT_MD5') && CRYPT_MD5==1) {
list(,$type,$salt,$hash) = explode('$',$pass_hash);
if( crypt( $pass_clear, '$1$' .$salt ) == $pass_hash )
$ret=true;
} else {
array_push($msgs,
_("Unable to validate user's password."),
_("MD5 is not supported by webserver's system crypt library."));
}
} elseif( strstr( $pass_hash, '_' ) ) { // Check if it's extended des crypt
// check CRYPT_EXT_DES here.
// ldap server might support it, but php might be on other OS
if (defined('CRYPT_EXT_DES') && CRYPT_EXT_DES==1) {
if( crypt( $pass_clear, $pass_hash ) == $pass_hash )
$ret=true;
} else {
array_push($msgs,
_("Unable to validate user's password."),
_("Extended DES crypt is not supported by webserver's system crypt library."));
}
} else {
// it is possible that this test is useless and any crypt library supports it, but ...
if (defined('CRYPT_STD_DES') && CRYPT_STD_DES==1) {
// plain crypt password
if( crypt($pass_clear, $pass_hash ) == $pass_hash )
$ret=true;
} else {
array_push($msgs,
_("Unable to validate user's password."),
_("Standard DES crypt is not supported by webserver's system crypt library."));
}
}
break;
// No crypt is given, assume plaintext passwords are used
default:
if( $pass_clear == $pass_hash )
$ret=true;
break;
}
if (! $ret && empty($msgs)) {
array_push($msgs,CPW_CURRENT_NOMATCH);
}
return $ret;
}