Added demo with dynamic appearance

Author: JanSlabon

examples/appearance-demo.php

@@ -0,0 +1,114 @@
+<?php
+
+declare(strict_types=1);
+
+use setasign\SetaPDF\Signer\Module\CSC\Client;
+use setasign\SetaPDF\Signer\Module\CSC\Module;
+
+ini_set('display_errors', '1');
+ini_set('display_startup_errors', '1');
+error_reporting(E_ALL);
+
+require_once(__DIR__ . '/../vendor/autoload.php');
+
+session_start();
+
+if (!file_exists('settings.php')) {
+    echo 'The settings.php file is missing. See settings.php.dist for an example.';
+    die();
+}
+
+$settings = require 'settings.php';
+$apiUri = $settings['apiUri'];
+
+$fileToSign = __DIR__ . '/assets/Laboratory-Report.pdf';
+$resultPath = 'signed.pdf';
+
+// to create or update your access token you have to call generate-token.php first
+if (!isset($_SESSION['accessToken']['access_token'])) {
+    echo 'Missing access token! <a href="generate-token.php">Login here</a>';
+    die();
+}
+// check if the access token is still valid
+if (!isset($_SESSION['accessToken']['expires']) || $_SESSION['accessToken']['expires'] < time()) {
+    echo 'Access token is expired! <a href="generate-token.php">Renew here</a>';
+    die();
+}
+$accessToken = $_SESSION['accessToken']['access_token'];
+
+$httpClient = new GuzzleHttp\Client();
+$httpClient = new Mjelamanov\GuzzlePsr18\Client($httpClient);
+$requestFactory = new Http\Factory\Guzzle\RequestFactory();
+$streamFactory = new Http\Factory\Guzzle\StreamFactory();
+$client = new Client($apiUri, $httpClient, $requestFactory, $streamFactory);
+
+echo '<pre>';
+$credentialIds = ($client->credentialsList($accessToken))['credentialIDs'];
+var_dump($credentialIds);
+// we just use the first credential on the list
+$credentialId = $credentialIds[0];
+// fetch all information regarding your credential id like the certificates
+$credentialInfo = $client->credentialsInfo($accessToken, $credentialId, 'chain', true, true);
+var_dump($credentialInfo);
+echo '</pre>';
+if ($credentialInfo['authMode'] === 'oauth2code') {
+    echo 'The selected credentialId does only support oauth2code authentification.'
+        . ' A synchronous sign request is not possible - take a look at the <a href="async-demo.php">async-demo</a> instead.';
+    die();
+}
+
+$certificates = $credentialInfo['cert']['certificates'];
+
+// INFO: YOU SHOULD CACHE THE DATA IN $credentialInfo FOR LESS API REQUESTS
+
+// the first certificate is always the signing certificate
+$certificate = array_shift($certificates);
+$algorithm = $credentialInfo['key']['algo'][0];
+
+$module = new Module($accessToken, $client);
+$module->setCredentialId($credentialId);
+$module->setSignatureAlgorithmOid($algorithm);
+$module->setCertificate($certificate);
+$module->setExtraCertificates($certificates);
+
+if ($credentialInfo['authMode'] === 'explicit' && !isset($_GET['otp']) && !isset($_GET['pin'])) {
+    // you should check the OTP and/or PIN entry in $credentialInfo for how to setup authentication exactly
+    echo 'Please enter OTP or PIN:';
+    echo '<form><input type="text" name="otp" placeholder="OTP"> or <input type="text" name="pin" placeholder="PIN">';
+    echo '<input type="submit"/></form>';
+    die();
+}
+
+if (isset($_GET['otp'])) {
+    $module->setOtp($_GET['otp']);
+}
+if (isset($_GET['pin'])) {
+    $module->setPin($_GET['pin']);
+}
+
+// create a writer instance
+$writer = new SetaPDF_Core_Writer_File($resultPath);
+// create the document instance
+$document = SetaPDF_Core_Document::loadByFilename($fileToSign, $writer);
+
+// create the signer instance
+$signer = new SetaPDF_Signer($document);
+
+$field = $signer->addSignatureField(
+    'Signature',
+    1,
+    SetaPDF_Signer_SignatureField::POSITION_RIGHT_TOP,
+    ['x' => -160, 'y' => -100],
+    180,
+    60
+);
+
+$signer->setSignatureFieldName($field->getQualifiedName());
+
+$appearance = new SetaPDF_Signer_Signature_Appearance_Dynamic($module);
+$signer->setAppearance($appearance);
+
+$signer->sign($module);
+
+echo '<a href="data:application/pdf;base64,' . base64_encode(file_get_contents($resultPath)) . '" ' .
+    'download="' . basename($resultPath) . '">download</a> | <a href="?">restart</a><br />';

examples/generate-token.php

@@ -100,4 +100,5 @@
 echo '<a href="demo.php">Go to demo.php</a><br/>';
 echo '<a href="ltv-demo.php">Go to ltv-demo.php</a><br/>';
 echo '<a href="async-demo.php">Go to async-demo.php</a><br/>';
+echo '<a href="appearance-demo.php">Go to appearance-demo.php</a><br/>';