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<?php
/*********************************************************************
class.api.php
API
Peter Rotich <peter@osticket.com>
Copyright (c) 2006-2013 osTicket
http://www.osticket.com
Released under the GNU General Public License WITHOUT ANY WARRANTY.
See LICENSE.TXT for details.
vim: expandtab sw=4 ts=4 sts=4:
**********************************************************************/
include_once INCLUDE_DIR.'class.controller.php';
class API {
var $id;
var $ht;
function __construct($id) {
$this->id = 0;
$this->load($id);
}
function load($id=0) {
if(!$id && !($id=$this->getId()))
return false;
$sql='SELECT * FROM '.API_KEY_TABLE.' WHERE id='.db_input($id);
if(!($res=db_query($sql)) || !db_num_rows($res))
return false;
$this->ht = db_fetch_array($res);
$this->id = $this->ht['id'];
return true;
}
function reload() {
return $this->load();
}
function getId() {
return $this->id;
}
function getKey() {
return $this->ht['apikey'];
}
function getIPAddr() {
return $this->ht['ipaddr'];
}
function getNotes() {
return $this->ht['notes'];
}
function getHashtable() {
return $this->ht;
}
function isActive() {
return ($this->ht['isactive']);
}
function canCreateTickets() {
return ($this->ht['can_create_tickets']);
}
function canExecuteCron() {
return ($this->ht['can_exec_cron']);
}
function update($vars, &$errors) {
if(!API::save($this->getId(), $vars, $errors))
return false;
$this->reload();
return true;
}
function delete() {
$sql='DELETE FROM '.API_KEY_TABLE.' WHERE id='.db_input($this->getId()).' LIMIT 1';
return (db_query($sql) && ($num=db_affected_rows()));
}
/** Static functions **/
static function add($vars, &$errors) {
return API::save(0, $vars, $errors);
}
static function validate($key, $ip) {
return ($key && $ip && self::getIdByKey($key, $ip));
}
static function getIdByKey($key, $ip='') {
$sql='SELECT id FROM '.API_KEY_TABLE.' WHERE apikey='.db_input($key);
if($ip)
$sql.=' AND ipaddr='.db_input($ip);
if(($res=db_query($sql)) && db_num_rows($res))
list($id) = db_fetch_row($res);
return $id;
}
static function lookupByKey($key, $ip='') {
return self::lookup(self::getIdByKey($key, $ip));
}
static function lookup($id) {
return ($id && is_numeric($id) && ($k= new API($id)) && $k->getId()==$id)?$k:null;
}
static function save($id, $vars, &$errors) {
if(!$id && (!$vars['ipaddr'] || !Validator::is_ip($vars['ipaddr'])))
$errors['ipaddr'] = __('Valid IP is required');
if($errors) return false;
$sql=' updated=NOW() '
.',isactive='.db_input($vars['isactive'])
.',can_create_tickets='.db_input($vars['can_create_tickets'])
.',can_exec_cron='.db_input($vars['can_exec_cron'])
.',notes='.db_input(Format::sanitize($vars['notes']));
if($id) {
$sql='UPDATE '.API_KEY_TABLE.' SET '.$sql.' WHERE id='.db_input($id);
if(db_query($sql))
return true;
$errors['err']=sprintf(__('Unable to update %s.'), __('this API key'))
.' '.__('Internal error occurred');
} else {
$sql='INSERT INTO '.API_KEY_TABLE.' SET '.$sql
.',created=NOW() '
.',ipaddr='.db_input($vars['ipaddr'])
.',apikey='.db_input(strtoupper(md5(time().$vars['ipaddr'].md5(Misc::randCode(16)))));
if(db_query($sql) && ($id=db_insert_id()))
return $id;
$errors['err']=sprintf('%s %s',
sprintf(__('Unable to add %s.'), __('this API key')),
__('Correct any errors below and try again.'));
}
return false;
}
}
/**
* Controller for API methods. Provides methods to check to make sure the
* API key was sent and that the Client-IP and API-Key have been registered
* in the database, and methods for parsing and validating data sent in the
* API request.
*/
class ApiController extends Controller {
private $sapi;
private $key;
public function __construct($sapi = null) {
// Set API Interface the request is coming from
$this->sapi = $sapi ?: (osTicket::is_cli() ? 'cli' : 'http');
}
public function isCli() {
return (strcasecmp($this->sapi, 'cli') === 0);
}
private function getInputStream() {
return $this->isCli() ? 'php://stdin' : 'php://input';
}
protected function getRemoteAddr() {
return $_SERVER['REMOTE_ADDR'];
}
protected function getApiKey() {
return $_SERVER['HTTP_X_API_KEY'];
}
function requireApiKey() {
// Require a valid API key sent as X-API-Key HTTP header
// see getApiKey method.
if (!($key=$this->getKey()))
return $this->exerr(401, __('Valid API key required'));
elseif (!$key->isActive() || $key->getIPAddr() != $this->getRemoteAddr())
return $this->exerr(401, __('API key not found/active or source IP not authorized'));
return $key;
}
function getKey() {
// Lookup record using sent API Key && IP Addr
if (!$this->key
&& ($key=$this->getApiKey())
&& ($ip=$this->getRemoteAddr()))
$this->key = API::lookupByKey($key, $ip);
return $this->key;
}
/**
* Retrieves the body of the API request and converts it to a common
* hashtable. For JSON formats, this is mostly a noop, the conversion
* work will be done for XML requests
*/
function getRequest($format, $validate=true) {
$input = $this->getInputStream();
if (!($stream = @fopen($input, 'r')))
$this->exerr(400, sprintf('%s (%s)',
__("Unable to read request body"), $input));
return $this->parseRequest($stream, $format, $validate);
}
function getEmailRequest() {
if (!($data=$this->getRequest('email', false)))
$this->exerr(400, __("Unable to read email request"));
return $data;
}
function parseRequest($stream, $format, $validate=true) {
$parser = null;
switch(strtolower($format)) {
case 'xml':
if (!function_exists('xml_parser_create'))
return $this->exerr(501, __('XML extension not supported'));
$parser = new ApiXmlDataParser();
break;
case 'json':
$parser = new ApiJsonDataParser();
break;
case 'email':
$parser = new ApiEmailDataParser();
break;
default:
return $this->exerr(415, __('Unsupported data format'));
}
if (!($data = $parser->parse($stream)) || !is_array($data)) {
$this->exerr(400, $parser->lastError());
}
//Validate structure of the request.
if ($validate && $data)
$this->validate($data, $format, false);
return $data;
}
function parseEmail($content) {
return $this->parseRequest($content, 'email', false);
}
/**
* Structure to validate the request against -- must be overridden to be
* useful
*/
function getRequestStructure($format, $data=null) { return array(); }
/**
* Simple validation that makes sure the keys of a parsed request are
* expected. It is assumed that the functions actually implementing the
* API will further validate the contents of the request
*/
function validateRequestStructure($data, $structure, $prefix="", $strict=true) {
global $ost;
foreach ($data as $key=>$info) {
if (is_array($structure) && (is_array($info) || $info instanceof ArrayAccess)) {
$search = (isset($structure[$key]) && !is_numeric($key)) ? $key : "*";
if (isset($structure[$search])) {
$this->validateRequestStructure($info, $structure[$search], "$prefix$key/", $strict);
continue;
}
} elseif (in_array($key, $structure)) {
continue;
}
$error = sprintf(__("%s: Unexpected data received in API request"),
"$prefix$key");
$this->onError(400, $error, __('Unexpected Data'), !$strict);
}
return true;
}
/**
* Validate request.
*
*/
function validate(&$data, $format, $strict=true) {
return $this->validateRequestStructure(
$data,
$this->getRequestStructure($format, $data),
"",
$strict);
}
protected function debug($subj, $msg) {
return $this->log($subj, $msg, LOG_DEBUG);
}
protected function logError($subj, $msg, $fatal=false) {
// If error is not fatal then log it as a warning
return $this->log($subj, $msg, $fatal ? LOG_ERR : LOG_WARN);
}
protected function log($title, $msg, $level = LOG_WARN) {
global $ost;
switch ($level) {
case LOG_WARN:
case LOG_ERR:
// We are disabling email alerts on API errors / warnings
// due to potential abuse or loops that might cause email DOS
$ost->log($level, $title, $msg, false);
break;
case LOG_DEBUG:
default:
$ost->logDebug($title, $msg);
}
return true;
}
/**
* API error & logging and response!
*
* final - don not override downstream.
*/
final public function onError($code, $error, $title = null,
$logOnly = false) {
// Unpack the errors to string if error is an array
if ($error && is_array($error))
$error = Format::array_implode(": ", "\n", $error);
// Log the error
$msg = $error;
// TODO: Only include API Key when in debug mode to avoid
// potentialialy leaking a valid key in system logs
if (($key=$this->getApiKey()))
$msg .= "\n[$key]\n";
$title = sprintf('%s (%s)', $title ?: __('API Error'), $code);
$this->logError($title, $msg, $logOnly);
// If the error is not deemed fatal then simply return
if ($logOnly)
return;
// If the API Interface is CLI then throw a TicketApiError exception
// so the caller can handle the error gracefully.
// Note that we set the error code as well
if ($this->isCli())
throw new TicketApiError($error, $code);
// Respond and exit since HTTP endpoint requests
// are considered stateless
$this->response($code, $error);
}
}
include_once "class.xml.php";
class ApiXmlDataParser extends XmlDataParser {
function parse($stream) {
return $this->fixup(parent::parse($stream));
}
/**
* Perform simple operations to make data consistent between JSON and
* XML data types
*/
function fixup($current) {
global $cfg;
if (isset($current['ticket']))
$current = $current['ticket'];
if (!is_array($current))
return $current;
foreach ($current as $key=>&$value) {
if ($key == "phone" && is_array($value)) {
$value = $value[":text"];
} else if ($key == "alert") {
$value = (bool) (strtolower($value) === 'false' ? false : $value);
} else if ($key == "autorespond") {
$value = (bool) (strtolower($value) === 'false' ? false : $value);
} else if ($key == "message") {
if (!is_array($value)) {
$value = array(
"body" => $value,
"type" => "text/plain",
# Use encoding from root <xml> node
);
} else {
$value["body"] = $value[":text"];
unset($value[":text"]);
}
if (isset($value['encoding']))
$value['body'] = Charset::utf8($value['body'], $value['encoding']);
if (!strcasecmp($value['type'], 'text/html'))
$value = new HtmlThreadEntryBody($value['body']);
else
$value = new TextThreadEntryBody($value['body']);
} else if ($key == "attachments") {
if(isset($value['file']) && !isset($value['file'][':text']))
$value = $value['file'];
if($value && is_array($value)) {
foreach ($value as &$info) {
$info["data"] = $info[":text"];
unset($info[":text"]);
}
unset($info);
}
} else if(is_array($value)) {
$value = $this->fixup($value);
}
}
unset($value);
return $current;
}
}
include_once "class.json.php";
class ApiJsonDataParser extends JsonDataParser {
static function parse($stream, $tidy=false) {
return self::fixup(parent::parse($stream));
}
static function fixup($current) {
if (!is_array($current))
return $current;
foreach ($current as $key=>&$value) {
if ($key == "phone") {
$value = strtoupper($value);
} else if ($key == "alert") {
$value = (bool)$value;
} else if ($key == "autorespond") {
$value = (bool)$value;
} elseif ($key == "message") {
// Allow message specified in RFC 2397 format
$data = Format::strip_emoticons(Format::parseRfc2397($value, 'utf-8'));
if (isset($data['type']) && $data['type'] == 'text/html')
$value = new HtmlThreadEntryBody($data['data']);
else
$value = new TextThreadEntryBody($data['data']);
} else if ($key == "attachments") {
foreach ($value as &$info) {
$data = reset($info);
# PHP5: fopen("data://$data[5:]");
$contents = Format::parseRfc2397($data, 'utf-8', false);
$info = array(
"data" => $contents['data'],
"type" => $contents['type'],
"name" => key($info),
);
}
unset($info);
}
}
unset($value);
return $current;
}
}
/* Email parsing */
include_once "class.mailparse.php";
class ApiEmailDataParser extends EmailDataParser {
function parse($stream) {
return $this->fixup(parent::parse($stream));
}
function fixup($data) {
global $cfg;
if (!$data) return $data;
$data['source'] = 'Email';
if (!$data['subject'])
$data['subject'] = '[No Subject]';
if (!$data['emailId'])
$data['emailId'] = $cfg->getDefaultEmailId();
if( !$cfg->useEmailPriority())
unset($data['priorityId']);
return $data;
}
}
?>