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(PHP ActiveX) Azure OpenID Connect Step 2 -- Get id_token and ValidateSee more OIDC ExamplesAfter getting the endpoints by querying the Azure's OIDC well-known discovery document (OpenID Configuration document), we use the authorization_endpoint to get the id_token, and then validate it.. For more information, see https://docs.microsoft.com/en-us/azure/active-directory/develop/v2-protocols-oidc
<?php // This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. // In our previous example (Azure Fetch OpenID Connect metadata document) we fetched // the OpenID configuration document which is JSON which contains an entry for authorization_endpoint. $authorization_endpoint = 'https://login.microsoftonline.com/6d8ddd66-68d1-43b0-af5c-e31b4b7dd5cd/oauth2/v2.0/authorize'; // The OpenID Connect metadata document also contained a jwks_uri entry. This is the JSON Web Key Set (JWKS), // which is a set of keys containing the public keys used to verify any JSON Web Token (JWT) (in this case the id_token) // issued by the authorization server and signed using the RS256 signing algorithm. $jwks_uri = 'https://login.microsoftonline.com/6d8ddd66-68d1-44b0-af5c-e31b4b7ee5cd/discovery/v2.0/keys'; // We're going to send the following GET request, but it will be sent through an interactive web browser (not by Chilkat). // The following code will form the URL that is to be programmatically loaded and sent in a browser. // GET https://login.microsoftonline.com/{tenant}/oauth2/v2.0/authorize? // client_id=6731de76-14a6-49ae-97bc-6eba6914391e // &response_type=id_token // &redirect_uri=http%3A%2F%2Flocalhost%2Fmyapp%2F // &response_mode=form_post // &scope=openid // &state=12345 // &nonce=678910 // Use this object to set params and then get the URL-encoded query params string // For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.HttpRequest') $req = new COM("Chilkat.HttpRequest"); $req->AddParam('client_id','f125d695-c50e-456e-a579-a486f06d1213'); $req->AddParam('response_type','id_token'); $req->AddParam('redirect_uri','http://localhost:3017/'); $req->AddParam('response_mode','form_post'); $req->AddParam('scope','openid'); // For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.Prng') $prng = new COM("Chilkat.Prng"); $req->AddParam('state',$prng->genRandom(3,'decimal')); $req->AddParam('nonce',$prng->genRandom(4,'decimal')); $encodedParams = $req->getUrlEncodedParams(); print $encodedParams . "\n"; // Sample URL encoded params: // client_id=6731de76-14a6-49ae-97bc-6eba6914391e&redirect_uri=http%3A%2F%2Flocalhost%3A3017%2F&response_mode=form_post&scope=openid&state=3572902&nonce=57352474 // This is the URL to be programmatically loaded and sent in an interactive web browser.. // For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.StringBuilder') $sbUrl = new COM("Chilkat.StringBuilder"); $sbUrl->Append($authorization_endpoint); $sbUrl->Append('?'); $sbUrl->Append($encodedParams); $url = $sbUrl->getAsString(); // Before we launch the browser with the contents of sbUrl, create a socket to listen for the eventual callback.. // For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.Socket') $listenSock = new COM("Chilkat.Socket"); // Listen at the port indicated by the redirect_uri above. $backLog = 5; $success = $listenSock->BindAndListen(3017,$backLog); if ($success != 1) { print $listenSock->LastErrorText . "\n"; exit; } // Wait for the browser's connection in a background thread. // (We'll send load the URL into the browser following this..) // Wait a max of 60 seconds before giving up. $maxWaitMs = 60000; // task is a Chilkat.Task $task = $listenSock->AcceptNextConnectionAsync($maxWaitMs); $task->Run(); // ------------------------------------------------------------------- // At this point, your application should load the URL in a browser. // You'll need to add code here to do it.. // For example, // in C#: System.Diagnostics.Process.Start(url); // in Java: Desktop.getDesktop().browse(new URI(url)); // in VBScript: Set wsh=WScript.CreateObject("WScript.Shell") // wsh.Run url // in Xojo: ShowURL(url) (see http://docs.xojo.com/index.php/ShowURL) // in Dataflex: Runprogram Background "c:\Program Files\Internet Explorer\iexplore.exe" sUrl // The account owner would interactively accept or deny the authorization request. // Add the code to load the url in a web browser here... // Add the code to load the url in a web browser here... // Add the code to load the url in a web browser here... // System.Diagnostics.Process.Start(url); // ------------------------------------------------------------------- // Wait for the listenSock's task to complete. $success = $task->Wait($maxWaitMs); if (!$success or ($task->StatusInt != 7) or ($task->TaskSuccess != 1)) { if (!$success) { // The task.LastErrorText applies to the Wait method call. print $task->LastErrorText . "\n"; } else { // The ResultErrorText applies to the underlying task method call (i.e. the AcceptNextConnection) print $task->Status . "\n"; print $task->ResultErrorText . "\n"; } exit; } // If we get to this point, a connection on listenSock was accepted, and the redirected POST // is waiting to be read on the connected socket. // The POST we are going to read contains the following: // POST /myapp/ HTTP/1.1 // Host: localhost // Content-Type: application/x-www-form-urlencoded // // id_token=eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsIng1dCI6Ik1uQ19WWmNB...&state=12345 // But first.. we no longer need the listen socket... // Stop listening on port 3017. $listenSock->Close(10); // Get the connected socket. // For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.Socket') $sock = new COM("Chilkat.Socket"); $sock->LoadTaskResult($task); // We're acting as a temporary web server to receive this one redirected HTTP request.. // Read the start line of the request.. (i.e. the "POST /myapp/ HTTP/1.1") $startLine = $sock->receiveUntilMatch('\r\n'); if ($sock->LastMethodSuccess != 1) { print $sock->LastErrorText . "\n"; exit; } // Read the request header. $requestHeader = $sock->receiveUntilMatch('\r\n\r\n'); if ($sock->LastMethodSuccess != 1) { print $sock->LastErrorText . "\n"; exit; } print $requestHeader . "\n"; print '----' . "\n"; // Read the body. // The body will contain "id_token= eyJ......" // For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.StringBuilder') $sbRequestBody = new COM("Chilkat.StringBuilder"); $success = $sock->ReceiveSb($sbRequestBody); if ($success == 0) { print $sock->LastErrorText . "\n"; exit; } print $sbRequestBody->getAsString() . "\n"; // Given that we're acting as a web server, we must send a response.. // We can now send our HTTP response. // For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.StringBuilder') $sbResponseHtml = new COM("Chilkat.StringBuilder"); $sbResponseHtml->Append('<html><body><p>Thank you!</b></body</html>'); // For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.StringBuilder') $sbResponse = new COM("Chilkat.StringBuilder"); $sbResponse->Append('HTTP/1.1 200 OK\r\n'); $sbResponse->Append('Content-Length: '); $sbResponse->AppendInt($sbResponseHtml->Length); $sbResponse->Append('\r\n'); $sbResponse->Append('Content-Type: text/html\r\n'); $sbResponse->Append('\r\n'); $sbResponse->AppendSb($sbResponseHtml); $sock->SendString($sbResponse->getAsString()); $sock->Close(50); // Get the id_token from the sbRequestBody that we just received. // (Remember, we're acting as the web server, thus we received the redirect request..) // For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.Hashtable') $hashTab = new COM("Chilkat.Hashtable"); $hashTab->AddQueryParams($sbRequestBody->getAsString()); // See https://docs.microsoft.com/en-us/azure/active-directory/develop/id-tokens#validating-an-id-token // for more information about ID tokens.. $idToken = $hashTab->lookupStr('id_token'); // For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.Jwt') $jwt = new COM("Chilkat.Jwt"); // Let's see if the time constraints, if any, are valid. // The above JWT was created on the afternoon of 16-May-2016, with an expiration of 1 hour. // If the current system time is before the "nbf" time, or after the "exp" time, // then IsTimeValid will return false/0. // Also, we'll allow a leeway of 60 seconds to account for any clock skew. // Note: If the token has no "nbf" or "exp" claim fields, then IsTimeValid is always true. $leeway = 60; $bTimeValid = $jwt->IsTimeValid($idToken,$leeway); print 'time constraints valid: ' . $bTimeValid . "\n"; // Now let's recover the original claims JSON (the payload). $payload = $jwt->getPayload($idToken); // The payload will likely be in compact form: print $payload . "\n"; // We can format for human viewing by loading it into Chilkat's JSON object // and emit. // For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.JsonObject') $json = new COM("Chilkat.JsonObject"); $success = $json->Load($payload); $json->EmitCompact = 0; print $json->emit() . "\n"; // Sample output: // { // "aud": "f125d695-c50e-456e-a579-a486f06d1213", // "iss": "https://login.microsoftonline.com/6d8ddd66-68d1-43b0-af5c-e31b4b7dd5cd/v2.0", // "iat": 1626535322, // "nbf": 1626535322, // "exp": 1626539222, // "aio": "AWQAm/8TAAAAHQncmY0VvhgyMIhfleHX3DjsGfmlPM1CopkJ3mPnBUnCxrJ0ubruaACEhwGO7NsoHBhqFEzRzPxOq7MtuGVFsql+qJKZx8vQCszKYEPX9Wb3b5+d5KJTABHCIH48bTFd", // "idp": "https://sts.windows.net/9188040d-6c67-4c5b-b112-36a304b66dad/", // "nonce": "1519043321", // "rh": "0.ARgAZt2NbdFosEOvXOMbS33VzZXWJfEOxW5FpXmkhvBtEhMYALQ.", // "sub": "RMIZlHJ7hfsJmL8Qq3h6M0nPi4g-HEavnAFgxzaT2KM", // "tid": "6d8ddd66-68d1-43b0-af5c-e31b4b7dd5cd", // "uti": "-BXGHxvfREW-r9HI5NBiAA", // "ver": "2.0" // } // We can recover the original JOSE header in the same way: $joseHeader = $jwt->getHeader($idToken); // The payload will likely be in compact form: print $joseHeader . "\n"; // We can format for human viewing by loading it into Chilkat's JSON object // and emit. // For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.JsonObject') $jsonJoseHeader = new COM("Chilkat.JsonObject"); $success = $jsonJoseHeader->Load($joseHeader); $jsonJoseHeader->EmitCompact = 0; print $jsonJoseHeader->emit() . "\n"; // Sample output: // { // "typ": "JWT", // "alg": "RS256", // "kid": "nOo3ZDrODXEK1jKWhXslHR_KXEg" // } // Finally, we need to fetch the JSON Web Key Sets from the jwks_uri // and use it to verify the id_token's RSA signature. // For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.StringBuilder') $sbJwks = new COM("Chilkat.StringBuilder"); // For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.Http') $http = new COM("Chilkat.Http"); $success = $http->QuickGetSb($jwks_uri,$sbJwks); if ($success == 0) { print $http->LastErrorText . "\n"; exit; } // For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.JsonObject') $jwkset = new COM("Chilkat.JsonObject"); $success = $jwkset->LoadSb($sbJwks); $jwkset->EmitCompact = 0; print $jwkset->emit() . "\n"; // A sample jwkset: // { // "keys": [ // { // "kty": "RSA", // "use": "sig", // "kid": "nOo3ZDrODXEK1jKWhXslHR_KXEg", // "x5t": "nOo3ZDrODXEK1jKWhXslHR_KXEg", // "n": "oaLLT9hkcSj ... NVrZdUdTBQ", // "e": "AQAB", // "x5c": [ // "MIIDBTC ... MRku44Dw7R" // ], // "issuer": "https://login.microsoftonline.com/6d8ddd66-68d1-43b0-af5c-e31b4b7dd5cd/v2.0" // }, // { // "kty": "RSA", // "use": "sig", // "kid": "l3sQ-50cCH4xBVZLHTGwnSR7680", // "x5t": "l3sQ-50cCH4xBVZLHTGwnSR7680", // "n": "sfsXMXW ... AYkwb6xUQ", // "e": "AQAB", // "x5c": [ // "MIIDBTCCA ... BWrh+/vJ" // ], // "issuer": "https://login.microsoftonline.com/6d8ddd66-68d1-43b0-af5c-e31b4b7dd5cd/v2.0" // }, // { // "kty": "RSA", // "use": "sig", // "kid": "DqUu8gf-nAgcyjP3-SuplNAXAnc", // "x5t": "DqUu8gf-nAgcyjP3-SuplNAXAnc", // "n": "1n7-nWSL ... V3pFWhQ", // "e": "AQAB", // "x5c": [ // "MIIC8TC ... 9pIcnkPQ==" // ], // "issuer": "https://login.microsoftonline.com/6d8ddd66-68d1-43b0-af5c-e31b4b7dd5cd/v2.0" // }, // { // "kty": "RSA", // "use": "sig", // "kid": "OzZ5Dbmcso9Qzt2ModGmihg30Bo", // "x5t": "OzZ5Dbmcso9Qzt2ModGmihg30Bo", // "n": "01re9a2BU ... 5OzQ6Q", // "e": "AQAB", // "x5c": [ // "MIIC8TC ... YmwJ6sDdRvQ==" // ], // "issuer": "https://login.microsoftonline.com/6d8ddd66-68d1-43b0-af5c-e31b4b7dd5cd/v2.0" // } // ] // } // We should have an RSA key with kid matching the kid from the joseHeader.. $kid = $jsonJoseHeader->stringOf('kid'); // Find the RSA key with the specified key id // jwk is a Chilkat.JsonObject $jwk = $jwkset->FindRecord('keys','kid',$kid,1); if ($jwkset->LastMethodSuccess == 0) { print 'Failed to find a matching RSA key in the JWK key set...' . "\n"; exit; } // For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.PublicKey') $pubkey = new COM("Chilkat.PublicKey"); $success = $pubkey->LoadFromString($jwk->emit()); if ($success == 0) { print $pubkey->LastErrorText . "\n"; print $jwk->emit() . "\n"; } else { $verified = $jwt->VerifyJwtPk($idToken,$pubkey); print 'Verified: ' . $verified . "\n"; } ?> |
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