<?php
/**
* Project: Distrubution License Class
* File: class.license.server.php
*
* Copyright (C) 2005 Oliver Lillie
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the Free
* Software Foundation; either version 2 of the License, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* @link http://www.buggedcom.co.uk/
* @link http://www.phpclasses.org/browse/package/2298.html
* @author Oliver Lillie, buggedcom <publicmail at buggedcom dot co dot uk>
* @version 0.1
* @history---------------------------------------------
* see CHANGELOG
*/
class license_server extends padl {
/**
* init the database value.
*/
var $_DB;
/**
* the database table prefix.
*
* @var array
*/
var $DB_PREFIX = '';
/**
* the default license approval type.
* - ADMIN means the key generation needs admin approval
* - AUTO means the key generation is done on request
*
* @var string
*/
var $APPROVAL_TYPE = 'ADMIN';
/**
* init the approval type vars.
*/
var $APPROVAL_DATA;
var $APPROVAL_TIME;
/**
* Constructor
*
* @access public
* @param $use_mcrypt boolean Determines if mcrypt encryption is used or not (defaults to true,
* however if mcrypt is not available, it is set to false)
* @param $use_time boolean Sets if time binding should be used in the key (defaults to true)
* @param $use_server boolean Sets if server binding should be used in the key (defaults to true)
* @param $allow_local boolean Sets if server binding is in use then localhost servers are valid (defaults to false)
**/
function license_server($use_mcrypt=true, $use_time=true, $use_server=true, $allow_local=false, $approval_type=false)
{
# init the class
$this->init($use_mcrypt, $use_time, $use_server, $allow_local);
# set the registration approval type
if(is_string($approval_type))
{
$this->set_approval_type($approval_type);
}
}
/**
* set_approval_type
*
* sets the approval type
*
* @access public
* @param $type string The type of license generation
* ADMIN - generates a temp key and assigns the $data param into the key.
* the key will be valid for the period set by the validty param.
* NOTE: if validity is set to 0 then a key is not returned to the client
* AUTO - generates the key when one is asked for. the data array is used, however
* the validity period is treated as a cap for the time span sent from the client
* install, thus if the validy is less than the asked for time period it will override
* @param $data array An array of data to be bound into the generated key
* @param $validity number If used with ADMIN it is the length of the temporary key generated. if set to 0
* then no temp key is generated, however if used with AUTO it caps the requested licenses
* time span. If no time span is requested by the client and this is not set to 0 then a span
* will be placed into the key. This way you can issue licenses and not worry about the client
* trying to hack the timespan of the license.
* @return resource id
**/
function set_approval_type($type='ADMIN', $data=array(), $validity=0)
{
$this->APPROVAL_TYPE = $type;
$this->APPROVAL_DATA = $data;
$this->APPROVAL_TIME = $validity;
}
/**
* connect
*
* connects to the mysql db holding the license data
*
* @access public
* @param $table string Database table that contains the distributionLicense sql
* @param $user string User for the mysql db
* @param $pass string Pass for the mysql db
* @param $host string Host for the mysql db
* @return resource id
**/
function connect($table, $user, $pass, $host='localhost')
{
# connect to your servers DB
$this->_DB = @mysql_pconnect($host, $user, $pass);
# select the table required
@mysql_select_db($table, $this->_DB);
return $this->_DB;
}
/**
* disconnect
*
* disconnects the mysql db
* been validated on the return server
*
* @access public
* @return boolean
**/
function disconnect()
{
# close the database
return @mysql_close($this->_DB);
}
/**
* _query
*
* builds, then excecutes then returns data for mysql queries
*
* @access private
* @param $table string The table to build the query for
* @param $action string The type of action to build the query for
* @param $data array The data array containing arguments for the query building
* @return array
**/
function _query($table, $action, $data=array())
{
$query = $this->_build_query($table, $action, $data);
return $this->_execute_query($query);
}
/**
* _execute_query
*
* excecutes a mysql query and returns the results
*
* @access private
* @param $query string The query string to execute
* @return array
**/
function _execute_query($query)
{
# determine the query type
$query_type = strpos($query, 'INSERT')===false ? (strpos($query, 'SELECT')===false ? 'other' : 'return') : 'insert';
# run the query
$query_result = @mysql_query($query, $this->_DB);
if(!$query_result) return array('RESULT'=>false, 'SQL'=>$query, 'ERROR'=>mysql_error());
# switch through the query types in order to return the correct data
switch($query_type)
{
case 'insert' :
$result = mysql_insert_id($this->_DB);
break;
case 'return' :
$result = array();
if(empty($data['FETCHTYPE']))
{
while($row = mysql_fetch_assoc($query_result))
{
$result[] = $row;
}
}
break;
default :
$result = true;
break;
}
return array('RESULT'=>$result);
}
/**
* _build_query
*
* gets the query for the table and qction
*
* @access private
* @param $table string The table to build the query for
* @param $action string The type of action to build the query for
* @param $data array The data array containing arguments for the query building
* @return string
**/
function _build_query($table, $action, $data=array())
{
# get the table prefix and all
$table_pre = '`'.$this->DB_PREFIX.$table.'`';
# switch through the queries
# and build them
switch($action)
{
case 'insert' :
switch($table)
{
case 'licenses' :
return 'INSERT INTO '.$table_pre.' (`LICENSE_ID`,`USER_ID`,`FLAGGED`,`STATUS`,`START_DATE`,`DATE_SPAN`,`EXPIRY_DATE`,`NOTES`,`COST`,`PAID`,`REQUEST_KEY`,`TEMP_KEY`,`LICENSE_KEY`,`PAYMENT_NEXT_DUE`,`DATA`,`MAC`,`PATH`,`IP`) VALUES ('.$this->_get_value($data['LICENSE_ID']).','.$this->_get_value($data['USER_ID']).','.$this->_get_value($data['FLAGGED']).','.$this->_get_value($data['STATUS']).','.$this->_get_value($data['START_DATE']).','.$this->_get_value($data['DATE_SPAN']).','.$this->_get_value($data['EXPIRY_DATE']).','.$this->_get_value($data['NOTES']).','.$this->_get_value($data['COST']).','.$this->_get_value($data['PAID']).','.$this->_get_value($data['REQUEST_KEY']).','.$this->_get_value($data['TEMP_KEY']).','.$this->_get_value($data['LICENSE_KEY']).','.$this->_get_value($data['PAYMENT_NEXT_DUE']).','.$this->_get_value($data['DATA']).','.$this->_get_value($data['MAC']).','.$this->_get_value($data['PATH']).','.$this->_get_value($data['IP']).');';
case 'remote_log' :
return 'INSERT INTO '.$table_pre.' (`ID`,`TIMESTAMP`,`LICENSE_ID`,`MESSAGE`,`SERVER`,`IP`) VALUES ('.$this->_get_value($data['ID']).','.$this->_get_value($data['TIMESTAMP']).','.$this->_get_value($data['LICENSE_ID']).','.$this->_get_value($data['MESSAGE']).','.$this->_get_value($data['SERVER']).','.$this->_get_value($data['IP']).');';
}
case 'return' :
return 'SELECT '.$this->_get_value($data['RETURN'], '*', false).' FROM '.$table_pre.' '.$this->_build_matches($data['PAIRS']);
case 'update' :
return 'UPDATE '.$table_pre.' '.$this->_build_matches($data['SET'], 'SET', ', ').' '.$this->_build_matches($data['PAIRS']);
case 'delete' :
return 'DELETE FROM '.$table_pre.' '.$this->_build_matches($data['PAIRS']);
}
}
/**
* _get_value
*
* returns a null string if no value is found
*
* @access private
* @param $value string A value to be checked
* @param $fill string The return value if the value is empty
* @return string
**/
function _get_value($value, $fill='NULL', $add_quotes=true)
{
return empty($value) ? $fill : (is_string($value) && $add_quotes ? '"'.$value.'"' : $value);
}
/**
* get_null
*
* returns formatted sql, ie `FIELD`="VALUE"
*
* @access private
* @param $pairs array An arrary containing the field/value pairs
* @param $pre string The matches preceding command
* @param $sep string The matches seperator
* @return string
**/
function _build_matches($pairs, $pre='WHERE', $sep=' && ')
{
$num = count($pairs);
# if there are no pairs return and empty string
if($num == 0) return '';
# init the string
$str = $pre." ";
# loop through the pairs and build the sql
for($i=0; $i<$num; $i++)
{
$pair = $pairs[$i];
$value = $pair['VALUE'];
$comparison = empty($pair['COMP']) ? '=' : $pair['COMP'];
$str .= '`'.$pair['FIELD'].'`'.$comparison.(is_string($value) ? '"'.$value.'"' : $value);
if($i < $num-1)
{
$str.= $sep;
}
}
return $str;
}
/**
* _generate_return_data
*
* generates an encrypted string used to return data once the license has
* been validated on the return server
*
* @access private
* @param $array array Array that contains the return info from the dial home server
* @return string encrypted data string containing server validation info
**/
function _generate_return_data($array)
{
return $this->BEGIN2.$this->_encrypt($array, 'HOMEKEY').$this->END2;
}
/**
* receiveInstall
*
* receives an install and license key request. It validates the install
* request, process it and checks for duplicates against the allow install
* number, then returns with the result
*
* @access public
* @param $data array Data array (ie $_POST['POSTDATA']) recieved from
* the client dialing home
* @param $table string Database table that contains the distributionLicense sql
* @param $user string User for the mysql db
* @param $pass string Pass for the mysql db
* @param $host string Host for the mysql db
* @return string Returns the encrypted result from the register_install function in the app
* EMPTY_DATA - no data has been given to the _recieve_call function
* OVER_INSTALLED - if the number of installs registered is too many then it is returned
* CORRUPT - the request does not contain an id and is therefore a corrupt / hacked request
* PENDING - the data is ok, however the approval type for license generation is set to ADMIN
* thus any key generation needs to be approved by an administrator
* OK - the license correspods to the info held on the home server and all is ok
**/
function receive_install($data, $table, $user, $pass, $host='localhost')
{
$orig_data = $data;
# init the return array
$return = array();
# if there is not data die with an error
if(empty($data)) return $this->_generate_return_data(array('RESULT'=>'EMPTY_DATA'));
# decrypt the data
$data = $this->_decrypt($data, 'HOMEKEY');
# check for an id
if($data['ID'] != md5($this->ID2)) return $this->_generate_return_data(array('RESULT'=>'CORRUPT'));
# init the results array
$results = array();
# init the license array
$license = array();
# insert the id
$license['ID'] = md5($this->ID1);
# if server checks are required
if($this->USE_SERVER)
{
if(!$this->_compare_domain_ip($data['SERVER']['DOMAIN'], $data['SERVER']['IP'])) $return['RESULT'] = 'DOMAIN_IP_FAIL';
# update mac address
$license['SERVER']['DOMAIN']= $data['SERVER']['DOMAIN'];
# update mac address
$license['SERVER']['MAC'] = $data['SERVER']['MAC'];
# update the server details
$license['SERVER']['PATH'] = $data['SERVER']['PATH'];
# update the ip details
$license['SERVER']['IP'] = $data['SERVER']['IP'];
}
# if time checks are required
if($this->USE_TIME)
{
$license['DATE']['START'] = $data['DATE']['START'];
$license['DATE']['SPAN'] = $data['DATE']['SPAN'];
$license['DATE']['END'] = $data['DATE']['END'];
}
# connect to the db
$this->connect($table, $user, $pass, $host);
if(!empty($data['KEY_CODE']))
{
# will build in pre approved key codes, thus allowing someone to purchase
# a license to get a key code. This key code is linked to an individual
# licensee. If the license key has not been used already and is valid
# the license will be generated straight away, regardless of the generation
# approval variables. It will generate will the the purchase settings from
# the database
}
# merge the exiting data set in the request with the approval data
$license['DATA'] = array_merge($data['DATA'], $this->APPROVAL_DATA);
if(!isset($return['RESULT']))
{
# start building the insertion query
$query = 'INSERT INTO `'.$this->DB_PREFIX.'licenses` (`LICENSE_ID`,`USER_ID`,`FLAGGED`,`STATUS`,`START_DATE`,`DATE_SPAN`,`EXPIRY_DATE`,`NOTES`,`COST`,`PAID`,`REQUEST_KEY`,`TEMP_KEY`,`LICENSE_KEY`,`PAYMENT_NEXT_DUE`,`INSTALL`,`PACKAGES`,`MAC`,`PATH`,`IP`) VALUES (-VALUES-);';
# sort the approval type
if($this->APPROVAL_TYPE == 'AUTO')
{
# if the approval time is greater than 0 then override the end time
if($this->APPROVAL_TIME > 0)
{
# set the time span of the temp key
$start = time();
$license['DATE']['START'] = $start;
$license['DATE']['SPAN'] = $this->APPROVAL_TIME;
$license['DATE']['END'] = $start+$this->APPROVAL_TIME;
}
$create_license = true;
$return['RESULT'] = 'OK';
$values = 'NULL,NULL,NULL,1,'.$license['DATE']['START'].','.$license['DATE']['SPAN'].','.$license['DATE']['END'].',NULL,NULL,1,"'.$orig_data.'",NULL,NULL,NULL,NULL,NULL,"'.$data['SERVER']['MAC'].'","'.urlencode(serialize($data['SERVER']['PATH'])).'","'.urlencode(serialize($data['SERVER']['IP'])).'"';
}
else if($this->APPROVAL_TYPE == 'ADMIN')
{
$key = '';
# if the approval time is greater than 0 generate a temp key
if($this->APPROVAL_TIME > 0)
{
# set the time span of the temp key
$start = time();
$license['DATE']['START'] = $start;
$license['DATE']['SPAN'] = $this->APPROVAL_TIME;
$license['DATE']['END'] = $start+$this->APPROVAL_TIME;
$license['TEMP'] = 1;
$create_license = true;
}
$values = 'NULL,NULL,NULL,1,'.$license['DATE']['START'].','.$license['DATE']['SPAN'].','.$license['DATE']['END'].',NULL,NULL,NULL,"'.$orig_data.'",NULL,NULL,NULL,NULL,NULL,"'.$data['SERVER']['MAC'].'","'.urlencode(serialize($data['SERVER']['PATH'])).'","'.urlencode(serialize($data['SERVER']['IP'])).'"';
$return['RESULT'] = 'PENDING';
}
$query = str_replace('-VALUES-', $values, $query);
if(!mysql_query($query, $this->_DB))
{
$return['ERROR'] = mysql_error();
$return['RESULT'] = 'SERVER_DB_FAILED';
$create_license = false;
}
if($create_license)
{
$license['DBID'] = mysql_insert_id($this->_DB);
# create the key
$key = $this->_create_license($license);
$return['KEY'] = $key;
$row = ($this->APPROVAL_TYPE == 'ADMIN') ? 'TEMP_KEY' : 'LICENSE_KEY';
if(!mysql_query('UPDATE `'.$this->DB_PREFIX.'licenses` SET `'.$row.'`="'.$key.'" WHERE `LICENSE_ID`="'.$license['DBID'].'"'))
{
$return['ERROR'] = mysql_error();
$return['RESULT'] = 'SERVER_DB_FAILED';
unset($return['KEY']);
}
}
}
# disconnect from the db
$this->disconnect();
# generate the return data
return $this->_generate_return_data($return);
}
/**
* generate
*
* generates the client license key
*
* @access private
* @param $data array The data array containing the binding info
* @return string key string
**/
function _create_license($data)
{
# set the server os
$data['DATA']['_PHP_OS'] = PHP_OS;
# set the server os
$data['DATA']['_PHP_VERSION'] = PHP_VERSION;
# encrypt the key and return
return $this->_wrap_license($data);
}
/**
* recieve_call
*
* the function to be called by the script that recieves the call on your
* server from the client server
*
* @access public
* @param $data array Data array (ie $_POST['POSTDATA']) recieved from
* the client dialing home
* @param $table string Database table that contains the distributionLicense sql
* @param $user string User for the mysql db
* @param $pass string Pass for the mysql db
* @param $host string Host for the mysql db
* @return string Returns the encrypted server validation result from the dial home call
* EMPTY_DATA - no data has been given to the _recieve_call function
* EMPTY_ID - no id has been found in the data sent so dial home check cannot be made
* SERVER_LICENSE_404 - the license does not exist on the dial home server
* SERVER_LICENSE_MISMATCH - the license key sent to the home server and the license key residing in the
* home server db do not match
* SERVER_LICENSE_INACTIVE - license is inactive (ie expired)
* SERVER_LICENSE_WARNING - a warning has been given to the license holder
* SERVER_LICENSE_SUSPENDED - the license has been suspended
* SERVER_LICENSE_REVOKED - license has been revoked
* SERVER_PAYMENT_NOT_MADE - license has not been paid for
* SERVER_PAYMENT_DUE - next payment is due
* SERVER_DATE_MISMATCH - license start date does not match the one on the dial home server
* SERVER_MAC_MISMATCH - the mac address registered with the license does not match the one on the home server
* SERVER_SERVER_MISMATCH - the server vars supplied in the license mismatch the stored vars on the home server
* OK - the license correspods to the info held on the home server and all is ok
**/
function recieve_call($data, $table, $user, $pass, $host='localhost')
{
# if there is not data die with an error
if(empty($data))
{
return $this->_generate_return_data(array('RESULT'=>'EMPTY_DATA'));
}
# init the results array
$results = array();
# decrypt the data
$data = $this->_decrypt($data, 'HOMEKEY');
# if there is no license id to check then return with error
if(!isset($data['LICENSE_DATA']['DBID']))
{
return $this->_generate_return_data(array('RESULT'=>'EMPTY_ID'));
}
$istemp = (isset($data['LICENSE_DATA']['TEMP']));
# connect to the db
$this->connect($table, $user, $pass, $host);
# insert log remote log data
mysql_query('INSERT INTO `'.$this->DB_PREFIX.'remote_log` (`ID`,`TIMESTAMP`,`LICENSE_ID`,`MESSAGE`,`SERVER`,`IP`) VALUES (NULL,"'.time().'","'.$data['LICENSE_DATA']['DBID'].'","'.'test'.'","'.urlencode(serialize($data['LICENSE_DATA']['SERVER']['PATH'])).'","'.$_SERVER['REMOTE_ADDR'].'")', $this->_DB);
# check up on license in the license table
$lookup_result = mysql_query('SELECT * FROM `'.$this->DB_PREFIX.'licenses` WHERE `LICENSE_ID`="'.$data['LICENSE_DATA']['DBID'].'"', $this->_DB);
# get the license data from the server
$license = mysql_fetch_array($lookup_result, MYSQL_ASSOC);
# disconnect from the db
$this->disconnect();
# if the result is not returned or the license does not exist
if(!$lookup_result || !$license)
{
# die and send back the result to the server calling home
return $this->_generate_return_data(array('RESULT'=>'SERVER_LICENSE_404'));
}
# compare the license sent against the license stored
# if any changes have been made to the clients license without updating the one
# on the server then this will throw an error, main cause would be a hack or
# developer error
$stored_key = ($istemp) ? $license['TEMP_KEY'] : $license['LICENSE_KEY'];
if(md5($stored_key) != $data['LICENSE_DATA']['KEY'])
{
return $this->_generate_return_data(array('RESULT'=>'SERVER_LICENSE_MISMATCH'));
}
# check if license is active
switch($license['STATUS'])
{
case 0 :
return $this->_generate_return_data(array('RESULT'=>'SERVER_LICENSE_INACTIVE'));
case -1 :
return $this->_generate_return_data(array('RESULT'=>'SERVER_LICENSE_WARNING'));
case -2 :
return $this->_generate_return_data(array('RESULT'=>'SERVER_LICENSE_SUSPENDED'));
case -3 :
return $this->_generate_return_data(array('RESULT'=>'SERVER_LICENSE_REVOKED'));
default :
break;
}
# check if user has paid
if(!$license['PAID'] && !$istemp)
{
return $this->_generate_return_data(array('RESULT'=>'SERVER_PAYMENT_NOT_MADE'));
}
# check if the next pay date is passed
if($license['PAYMENT_NEXT_DUE']>0 && $license['PAYMENT_NEXT_DUE'] < time())
{
return $this->_generate_return_data(array('RESULT'=>'SERVER_PAYMENT_DUE'));
}
# check the start date and see if it is valid
if($this->USE_TIME && ($license['START_DATE'] != $data['LICENSE_DATA']['DATE']['START'] || $license['EXPIRY_DATE'] != $data['LICENSE_DATA']['DATE']['END']))
{
return $this->_generate_return_data(array('RESULT'=>'SERVER_DATE_MISMATCH'));
}
# if server checks are required
if($this->USE_SERVER)
{
# check mac address
if($license['MAC'] != $data['LICENSE_DATA']['SERVER']['MAC'])
{
return $this->_generate_return_data(array('RESULT'=>'SERVER_MAC_MISMATCH'));
}
# check the server vars
$server_difs = count(array_diff(unserialize(urldecode($license['PATH'])), $data['LICENSE_DATA']['SERVER']['PATH']));
if($server_difs > 0)
{
return $this->_generate_return_data(array('RESULT'=>'SERVER_SERVER_MISMATCH'));
}
}
return $this->_generate_return_data(array('RESULT'=>'OK'));
}
}
?> |
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