We did not know that Oct 1 is also deadline for signed_request.
Does anyone have example code to do signed_request for FBML apps?
We are trying to beat the deadline on Oct 1. Thanks!
The signed_request documentation shows how to do it in PHP. It's pretty easy to do in any language.
function parse_signed_request($signed_request, $secret) {
list($encoded_sig, $payload) = explode('.', $signed_request, 2);
// decode the data
$sig = base64_url_decode($encoded_sig);
$data = json_decode(base64_url_decode($payload), true);
if (strtoupper($data['algorithm']) !== 'HMAC-SHA256') {
error_log('Unknown algorithm. Expected HMAC-SHA256');
return null;
}
// check sig
$expected_sig = hash_hmac('sha256', $payload, $secret, $raw = true);
if ($sig !== $expected_sig) {
error_log('Bad Signed JSON signature!');
return null;
}
return $data;
}
function base64_url_decode($input) {
return base64_decode(strtr($input, '-_', '+/'));
}
Related
Meaning, they don't have to be distributed. I'm thinking about using memcached or redis for that. Probably the latter one. What I'm concerned about is "we've got to free some memory, so we'll delete this key/value before it expired" thing. But I'm open to other suggestions as well.
tl;dr Use ready-made solution, suggested by developers.
So, I decided not to use memcached for the purpose. Since it's a caching server. I don't see a way to ensure that it doesn't delete my keys because it's out of memory. With, redis that's not an issue as long as maxmemory-policy = noeviction.
There are 3 links I want to share with you. They are basically 3 ways, that I now know, to solve the issue. As long as you have redis >= 2.6.0 that is.
redis >= 2.6.12
If you've got redis >= 2.6.12, you're lucky and can simply use setnx command with its new options ex and nx:
$redis->set($name, <whatever>, array('nx', 'ex' => $ttl));
But we can't just delete the lock in the end, if we are to allow for critical section taking longer then we expected (>= ttl). Consider the following situation:
C1 acquires the lock
lock expires
C2 acquires the lock
C1 deletes C2's lock
For that not to happen we are going to store current timestamp as a value of the lock. Then, knowing that Lua scripts are atomic (see Atomicity of scripts):
$redis->eval('
if redis.call("get", KEYS[1]) == KEYS[2] then
redis.call("del", KEYS[1])
end
', array($name, $now));
However, is it possible for two clients to have equal now values? For that all the above actions should happen within one second and ttl must be equal to 0.
Resulting code:
function get_redis() {
static $redis;
if ( ! $redis) {
$redis = new Redis;
$redis->connect('127.0.0.1');
}
return $redis;
}
function acquire_lock($name, $ttl) {
if ( ! $ttl)
return FALSE;
$redis = get_redis();
$now = time();
$r = $redis->set($name, $now, array('nx', 'ex' => $ttl));
if ( ! $r)
return FALSE;
$lock = new RedisLock($redis, $name, $now);
register_shutdown_function(function() use ($lock) {
$r = $lock->release();
# if ( ! $r) {
# Here we can log the fact that lock has expired too early
# }
});
return $lock;
}
class RedisLock {
var $redis;
var $name;
var $now;
var $released;
function __construct($redis, $name, $now) {
$this->redis = get_redis();
$this->name = $name;
$this->now = $now;
}
function release() {
if ($this->released)
return TRUE;
$r = $this->redis->eval('
if redis.call("get", KEYS[1]) == KEYS[2] then
redis.call("del", KEYS[1])
return 1
else
return 0
end
', array($this->name, $this->now));
if ($r)
$this->released = TRUE;
return $r;
}
}
$l1 = acquire_lock('l1', 4);
var_dump($l1 ? date('H:i:s', $l1->expires_at) : FALSE);
sleep(2);
$l2 = acquire_lock('l1', 4);
var_dump($l2 ? date('H:i:s', $l2->expires_at) : FALSE); # FALSE
sleep(4);
$l3 = acquire_lock('l1', 4);
var_dump($l3 ? date('H:i:s', $l3->expires_at) : FALSE);
expire
The other solution I found here. You simply make the value expire with expire command:
$redis->eval('
local r = redis.call("setnx", ARGV[1], ARGV[2])
if r == 1 then
redis.call("expire", ARGV[1], ARGV[3])
end
', array($name, $now, $ttl));
So, only acquire_lock function changes:
function acquire_lock($name, $ttl) {
if ( ! $ttl)
return FALSE;
$redis = get_redis();
$now = time();
$r = $redis->eval('
local r = redis.call("setnx", ARGV[1], ARGV[2])
if r == 1 then
redis.call("expire", ARGV[1], ARGV[3])
end
return r
', array($name, $now, $ttl));
if ( ! $r)
return FALSE;
$lock = new RedisLock($redis, $name, $now);
register_shutdown_function(function() use ($lock) {
$r = $lock->release();
# if ( ! $r) {
# Here we can log that lock as expired too early
# }
});
return $lock;
}
getset
And the last one is described again in documentation. Marked with "left for historical reasons" note.
This time we store timestamp of the moment when the lock is to expire. We store it with setnx command. If it succeeds, we've acquired the lock. Otherwise, either someone else's holding the lock, or the lock has expired. Be it the latter, we use getset to set new value and if the old value hasn't changed, we've acquired the lock:
$r = $redis->setnx($name, $expires_at);
if ( ! $r) {
$cur_expires_at = $redis->get($name);
if ($cur_expires_at > time())
return FALSE;
$cur_expires_at_2 = $redis->getset($name, $expires_at);
if ($cur_expires_at_2 != $cur_expires_at)
return FALSE;
}
What makes me uncomfortable here is that we seem to have changed someone else's expires_at value, don't we?
On a side note, you can check which redis is it that you're using this way:
function get_redis_version() {
static $redis_version;
if ( ! $redis_version) {
$redis = get_redis();
$info = $redis->info();
$redis_version = $info['redis_version'];
}
return $redis_version;
}
if (version_compare(get_redis_version(), '2.6.12') >= 0) {
...
}
Some debugging functions:
function redis_var_dump($keys) {
foreach (get_redis()->keys($keys) as $key) {
$ttl = get_redis()->ttl($key);
printf("%s: %s%s%s", $key, get_redis()->get($key),
$ttl >= 0 ? sprintf(" (ttl: %s)", $ttl) : '',
nl());
}
}
function nl() {
return PHP_SAPI == 'cli' ? "\n" : '<br>';
}
I'm building a PHP Framework for conclusion of my course, and I've stuck on a solution for match some custom routes and standard routes.
My framework's route are similar at routes of Zend Framework 1.
It's match standard routes for
/module/controller/action/param/value/param2/value2/paramn/valuen
The part of URI are optional, and the / route leads to application module, index controller and index action without params and values.
I'm stuck in some custom routes, that I define this way:
/blog/:postname/
/admin/logout/
/blog/posts/:year/:category/
/about/
That routes must match this examples URI requests.
/blog/my-first-post/
/blog/my-first-post/referenced/facebook/
/admin/logout/
/admin/logout/session-id/246753/action
/blog/posts/2013/turism/
/blog/posts/2013/turism/page/2/
But not had to match the standard routes. The custom routes must precede the standard routes.
Some examples of standard routes. Examples:
/
/application/
/application/index/
/application/index/index/
/blog/posts/view/id/3/
/admin/login/
/admin/login/logout (that one are the
/admin/blog/posts/edit/id/3/
/admin/blog/posts/edit/id/3/success/false/
The way I find to do this ellegantily is using RegEx for the matches, but I've trying to learn RegEx for more than one month and don't got it all.
PS: After match the current route, I must to bind the :variable with the related position in the REQUEST_URI.
Thank you for help.
While admittedly tempting, I wouldn't go with regex in this particular case. Even though I usually go that way. A simple loop and match would do, unless your course is setting some restrictions you have to follow.
I put together an example that should get the job done and runs in the console, just to show what i mean.
function get_route($uri){
$routes = [
'blog#show' => 'blog/:postname',
'admin#logout' => 'admin/logout',
'blog#category' => 'blog/posts/:year/:category',
'home#about' => 'about'
];
$params = [];
$uri = preg_replace('/#|\?.+/', '', $uri); // remove hash or query strings
$uri = preg_replace('/(^\/)?(\/$)?/', '', $uri); // trim slashes
$uri = explode('/', $uri);
$action = null;
foreach ($routes as $this_action => $this_route) { // loop through possible routes
$fractions = explode('/', $this_route);
if (sizeof($fractions) !== sizeof($uri)) continue; // did not match length of uri
for ($i=0; $i<sizeof($uri); $i++) { // compare each part of uri to each part of route
if (substr($fractions[$i], 0, 1) !== ':' && $fractions[$i] !== $uri[$i]) break; // not a match and not a param
if ($i === sizeof($uri)-1) { // made it to the last fraction!
$ii = 0;
foreach ($fractions as $fraction) {
if (substr($fraction, 0, 1) == ':') { // it's a param, map it!
$params[substr($fraction,1)] = $uri[$ii];
}
$ii++;
}
return ['action'=>$this_action, 'params'=>$params];
}
}
}
return false;
}
I could reach my needs with this code, a lot of tests has passed.
public function matchCustomRoute($uri)
{
if($uri == '')
{
return null;
}
$customRoutes = $this->getRoutes();
$explodeUri = explode('/', $uri);
$arrayUri = array();
foreach($explodeUri as $uriPart)
{
if($uriPart == '')
{
continue;
}
$arrayUri[] = $uriPart;
}
$countUri = count($arrayUri);
foreach($customRoutes as $key => $value)
{
$explodeRoute = explode('/',$value['route']);
$arrayRoute = array();
foreach($explodeRoute as $routePart)
{
if($routePart == '')
{
continue;
}
$arrayRoute[] = $routePart;
}
$countRoute = count($arrayRoute);
if($countRoute > $countUri)
{
continue;
}
$matches = 0;
for($i = 0 ; $i < $countRoute ; $i++)
{
$match = preg_match('/'.$arrayUri[$i].'/', '/'.$arrayRoute[$i].'/');
if($match == 0)
{
if(substr($arrayRoute[$i], 0, 1) == ':')
{
$value['params'][substr($arrayRoute[$i], 1)] = $arrayUri[$i];
}
else
{
continue;
}
}
$matches++;
}
if($matches == $countRoute)
{
return $value;
}
}
return null;
}
Thank you for help.
What has happened to the XSLT processing in IE11?
On IE8/9/10, you can use:
if (window.ActiveXObject) {
var xslt = new ActiveXObject("Msxml2.XSLTemplate");
....
}
On Chrome/Firefox/Safari, you can use:
else {
var xsltProcessor = new XSLTProcessor();
}
But on IE11, neither of these are supported. Does anyone know how this can be accomplished?
Try
if (window.ActiveXObject || "ActiveXObject" in window)
This worked for me working with IE11 and allowed me to instantiate ActiveX objects since the standard old check was being bypassed.
This works for me on Chrome/Edge/Firefox/IE11
function loadXMLDoc(filename) {
if (window.ActiveXObject || "ActiveXObject" in window) {
xhttp = new ActiveXObject("Msxml2.XMLHTTP");
} else {
xhttp = new XMLHttpRequest();
}
xhttp.open("GET", filename, false);
xhttp.send("");
return xhttp.responseXML;
}
if (window.ActiveXObject || "ActiveXObject" in window) {
ie();
} else {
xml = loadXMLDoc("input.xml");
xsl = loadXMLDoc("mmlctop2_0.xsl");
if (document.implementation && document.implementation.createDocument) {
xsltProcessor = new XSLTProcessor();
xsltProcessor.importStylesheet(xsl);
resultDocument = xsltProcessor.transformToDocument(xml, document);
var serializer = new XMLSerializer();
var transformed = serializer.serializeToString(resultDocument.documentElement);
alert(transformed);
}
}
// https://msdn.microsoft.com/en-us/library/ms753809(v=vs.85).aspx
function ie() {
var xslt = new ActiveXObject("Msxml2.XSLTemplate.3.0");
var xslDoc = new ActiveXObject("Msxml2.FreeThreadedDOMDocument.3.0");
var xslProc;
xslDoc.async = false;
xslDoc.load("mmlctop2_0.xsl");
if (xslDoc.parseError.errorCode != 0) {
var myErr = xslDoc.parseError;
alert("You have error " + myErr.reason);
} else {
xslt.stylesheet = xslDoc;
var xmlDoc = new ActiveXObject("Msxml2.DOMDocument.3.0");
xmlDoc.async = false;
xmlDoc.load("input.xml");
if (xmlDoc.parseError.errorCode != 0) {
var myErr = xmlDoc.parseError;
alert("You have error " + myErr.reason);
} else {
xslProc = xslt.createProcessor();
xslProc.input = xmlDoc;
xslProc.addParameter("param1", "Hello");
xslProc.transform();
alert(xslProc.output);
}
}
}
You could consider Saxon CE, an XSLT 2.0 processor implemented entirely in JavaScript. This would give you a consistent API across all browsers and would allow you to code using the more powerful XSLT 2.0 language rather than 1.0.
The reason if(window.ActiveXObject) fails in IE11 is because for some reason window.ActiveXObject has become falsy, even though it is still a function. I've taken to being more explicit in my feature detection:
if(window.ActiveXObject !== undefined){
...
}
This approach also covers the case of checking for attributes that are present but not set to a truthy value:
if(document.createElement("span").draggable !== undefined){
...
}
For me running site in a compatibility mode in IE - 11 solved the issue....
Note : This might not be a solution , but I was in a situation where one if my old site was using above mentioned code. But I'm not in a position to Re-code the site
You Can use ("ActiveXObject" in window) which will allow all the IE browsers to come inside the if condition .
Exp :-
if ("ActiveXObject" in window) {
// Internet Explorer For all versions like IE8 , IE9 , IE10 or IE11 etc
}else{
// code for Mozilla, Firefox, Opera, etc.
}
I am trying to send push notification in blackberry by using C# Web
service but i am facing problem is it return exception "The remote
server returned an error: (404) Not Found.". all info is correct as
per RIM Standard so please Help me ASAP.
[WebMethod]
public bool push(string notification)
{
bool success = true;
byte[] bytes = Encoding.ASCII.GetBytes("Hello");
Stream requestStream = null;
HttpWebResponse HttpWRes = null;
HttpWebRequest HttpWReq = null;
String BESName = "cp****.pushapi.eval.blackberry.com";
try
{
//http://<BESName>:<BESPort>/push?DESTINATTION=<PIN/EMAIL>&PORT=<PushPort>&REQUESTURI=/
// Build the URL to define our connection to the BES.
string httpURL = "https://" + BESName + "/push?DESTINATION=2B838E45&PORT=32721&REQUESTURI=/";
//make the connection
HttpWReq = (HttpWebRequest)WebRequest.Create(httpURL);
HttpWReq.Method = ("POST");
//add the headers nessecary for the push
HttpWReq.ContentType = "text/plain";
HttpWReq.ContentLength = bytes.Length;
// ******* Test this *******
HttpWReq.Headers.Add("X-Rim-Push-Id", "2B838E45" + "~" + DateTime.Now); //"~" +pushedMessage +
HttpWReq.Headers.Add("X-Rim-Push-Reliability", "application-preferred");
HttpWReq.Headers.Add("X-Rim-Push-NotifyURL", ("http://" + BESName + "2B838E45~Hello~" + DateTime.Now).Replace(" ", ""));
// *************************
HttpWReq.Credentials = new NetworkCredential("Username", "Password");
requestStream = HttpWReq.GetRequestStream();
//Write the data from the source
requestStream.Write(bytes, 0, bytes.Length);
//get the response
HttpWRes = (HttpWebResponse)HttpWReq.GetResponse();
var pushStatus = HttpWRes.Headers["X-RIM-Push-Status"];
//if the MDS received the push parameters correctly it will either respond with okay or accepted
if (HttpWRes.StatusCode == HttpStatusCode.OK || HttpWRes.StatusCode == HttpStatusCode.Accepted)
{
success = true;
}
else
{
success = false;
}
//Close the streams
HttpWRes.Close();
requestStream.Close();
}
catch (System.Exception)
{
success = false;
}
return success;
}
I got the same error when I tried your code above. Replace
String BESName = "cp****.pushapi.eval.blackberry.com";
With
String BESName = "cpxxx.pushapi.eval.blackberry.com/mss/PD_pushRequest";
and make sure you provide the right username and password here:
HttpWReq.Credentials = new NetworkCredential("username", "password");
I got success = true;
However, even though the above code executed successfully, I still do not see the push message on the BlackBerry device.
I'm trying to do a clean install SimpleTester on a new CodeIgniter application, following the instructions here: http://codeigniter.com/wiki/SimpleTester_-_Unit_testing_library
Everything's fine until step 6, when I add "simpletester" to the list of libraries that are autoloaded. As soon as I do that, visiting any page simply results in:
Fatal error: Class 'GroupTest' not found in
/path/to/app/application/libraries/simpletester.php on line 84
Grepping through the code for GroupTest I only see it referenced in comments, and in a readme file which states the following:
The GroupTest has been renamed TestSuite (see below).
It was removed completely in 1.1 in favour of this
name.
I tried modifying line 84 to replace GroupTest with TestSuite, but then I get the following error:
Fatal error: Call to undefined method TestSuite::addTestFile() in
/home/path/to/app/application/libraries/simpletester.php
on line 96
Is this a bug on their end? Has anyone seen this before?
I have run into the same issue. The GroupTest class can be found in test_case.php of version 1.0.1 of SimpleTest:
http://sourceforge.net/projects/simpletest/files/simpletest/simpletest_1.0.1/
Unfortunately, simply inserting v1.0.1 into the libraries folder doesn’t solve all the world’s problems. I no longer get the “Fatal error: Class ‘GroupTest’ not found ...” error, but I do get a segmentation fault and my site no longer works.
I have briefly tried to track down the issue but to no avail.
Note: I also responded on the CodeIgniter Wiki page containing the same question.
I had the same problem with a current project and found that the problem is that GroupTest was replaced with TestSuite which works a little differently.
This is the library code I use:
<?php if (!defined('BASEPATH')) exit('No direct script access allowed');
$libraryDir = APPPATH . 'libraries/simpletest';
if(!is_dir($libraryDir))
exit("Simpletest must be located in \"$libraryDir\"");
require_once $libraryDir . '/unit_tester.php';
require_once $libraryDir . '/mock_objects.php';
require_once $libraryDir . '/collector.php';
class SimpleTester
{
/**
* What reporter should be used for display.
* Could be either HtmlReporter, SmallReporter, MinimalReporter or ShowPasses.
*/
public $Reporter = 'MinimalReporter';
private $testDir;
private $testTitle;
private $fileExtension;
public function __construct($params = false)
{
$ci =& get_instance();
$ci->config->load('simpletester');
if($params == false) {
$params['runFromIPs'] = $ci->config->item('runFromIPs');
$params['testDir'] = $ci->config->item('testDir');
$params['fileExtension'] = $ci->config->item('fileExtension');
$params['autorun'] = $ci->config->item('autorun');
$params['reporter'] = $ci->config->item('reporter');
$params['testTitle'] = $ci->config->item('testTitle');
}
if(isset($params['runFromIPs']) && strpos($params['runFromIPs'], $ci->input->server('SERVER_ADDR') === FALSE))
{
// Tests won't be run automatically from this IP.
$params['autorun'] = FALSE;
}
// Check if call was an AJAX call. No point in running test
// if not seen and may break the call.
$header = 'CONTENT_TYPE';
if(!empty($_SERVER[$header])) {
// #todo Content types could be placed in config.
$ajaxContentTypes = array('application/x-www-form-urlencoded', 'multipart/form-data');
foreach ($ajaxContentTypes as $ajaxContentType) {
if(false !== stripos($_SERVER[$header], $ajaxContentType))
{
$params['autorun'] = FALSE;
break;
}
}
}
$this->testDir = $params['testDir'];
$this->testTitle = $params['testTitle'];
$this->fileExtension = $params['fileExtension'];
if(isset($params['reporter']))
$this->Reporter = $params['reporter'];
if($params['autorun'] == TRUE)
echo $this->Run();
}
/**
* Run the tests, returning the reporter output.
*/
public function Run()
{
// Save superglobals that might be tested.
if(isset($_SESSION)) $oldsession = $_SESSION;
$oldrequest = $_REQUEST;
$oldpost = $_POST;
$oldget = $_GET;
$oldfiles = $_FILES;
$oldcookie = $_COOKIE;
$test_suite = new TestSuite($this->testTitle);
// Add files in tests_dir
if(is_dir($this->testDir))
{
if($dh = opendir($this->testDir))
{
while(($file = readdir($dh)) !== FALSE)
{
// Test if file ends with php, then include it.
if(substr($file, -(strlen($this->fileExtension)+1)) == '.' . $this->fileExtension)
{
$test_suite->addFile($this->testDir . "/$file");
}
}
closedir($dh);
}
}
// Start the tests
ob_start();
$test_suite->run(new $this->Reporter);
$output_buffer = ob_get_clean();
// Restore superglobals
if(isset($oldsession)) $_SESSION = $oldsession;
$_REQUEST = $oldrequest;
$_POST = $oldpost;
$_GET = $oldget;
$_FILES = $oldfiles;
$_COOKIE = $oldcookie;
return $output_buffer;
}
}
// Html output reporter classes //////////////////////////////////////
/**
* Display passes
*/
class ShowPasses extends HtmlReporter
{
function ShowPasses()
{
$this->HtmlReporter();
}
function paintPass($message)
{
parent::paintPass($message);
print "<span class=\"pass\">Pass</span>: ";
$breadcrumb = $this->getTestList();
array_shift($breadcrumb);
print implode("->", $breadcrumb);
print "->$message<br />\n";
}
function _getCss()
{
return parent::_getCss() . ' .pass {color:green;}';
}
}
/**
* Displays a tiny div in upper right corner when ok
*/
class SmallReporter extends HtmlReporter
{
var $test_name;
function ShowPasses()
{
$this->HtmlReporter();
}
function paintHeader($test_name)
{
$this->test_name = $test_name;
}
function paintFooter($test_name)
{
if($this->getFailCount() + $this->getExceptionCount() == 0)
{
$text = $this->getPassCount() . " tests ok";
print "<div style=\"background-color:#F5FFA8; text-align:center; right:10px; top:30px; border:2px solid green; z-index:10; position:absolute;\">$text</div>";
}
else
{
parent::paintFooter($test_name);
print "</div>";
}
}
function paintFail($message)
{
static $header = FALSE;
if(!$header)
{
$this->newPaintHeader();
$header = TRUE;
}
parent::paintFail($message);
}
function newPaintHeader()
{
$this->sendNoCacheHeaders();
print "<style type=\"text/css\">\n";
print $this->_getCss() . "\n";
print "</style>\n";
print "<h1 style=\"background-color:red; color:white;\">$this->test_name</h1>\n";
print "<div style=\"background-color:#FBFBF0;\">";
flush();
}
}
/**
* Minimal only displays on error
*/
class MinimalReporter extends SmallReporter
{
function paintFooter($test_name)
{
if($this->getFailCount() + $this->getExceptionCount() != 0)
{
parent::paintFooter($test_name);
print "</div>";
}
}
}
Works fine for me I haven't tested all the different reporters yet though. But the default one works fine.
And this is how I use it:
$this->load->library('simpletester');
echo $this->simpletester->Run();
And my config file is:
$config['testDir'] = APPPATH . 'tests';
$config['runFromIPs'] = '127.0.0.1';
$config['reporter'] = 'HtmlReporter';
$config['autorun'] = false;
$config['fileExtension'] = 'php';
$config['testTitle'] = 'My Unit Tests';