From b3c7c186a8606f184e6f50a1d9d3338de0dbf220 Mon Sep 17 00:00:00 2001
From: Vincent LAURENT <vince.laurent@gmail.com>
Date: Thu, 31 Mar 2022 11:08:46 +0200
Subject: [PATCH 1/3] Form and button to share pdf

---
 templates/signature.html.php | 23 +++++++++++++++--------
 1 file changed, 15 insertions(+), 8 deletions(-)

diff --git a/templates/signature.html.php b/templates/signature.html.php
index d5f34e6..488fd17 100644
--- a/templates/signature.html.php
+++ b/templates/signature.html.php
@@ -70,14 +70,21 @@
               <div class="d-grid gap-2 mt-2">
                   <button type="button" id="btn-add-svg" class="btn btn-sm btn-light" data-bs-toggle="modal" data-bs-target="#modalAddSvg"><i class="bi bi-plus-circle"></i> Ajouter un élément</button>
               </div>
-
-              <form class="position-absolute bottom-0 pb-2 ps-0 pe-4 w-100 d-none d-sm-none d-md-block" id="form_pdf" action="/sign" method="post" enctype="multipart/form-data">
-                    <input id="input_pdf" name="pdf" type="file" class="d-none" />
-                    <input id="input_svg" name="svg[]" type="file" class="d-none" />
-                    <div class="d-grid gap-2 mt-2">
-                        <button class="btn btn-primary" disabled="disabled" type="submit" id="save"><i class="bi bi-download"></i> Télécharger le PDF Signé</button>
-                    </div>
-              </form>
+              <div class="position-absolute bottom-0 pb-2 ps-0 pe-4 w-100 d-none d-sm-none d-md-block">
+                  <form id="form_sharing" action="/share" method="post" enctype="multipart/form-data">
+                        <input id="input_pdf_share" name="pdf" type="file" class="d-none" />
+                        <div class="d-grid gap-2 mt-2">
+                            <button class="btn btn-outline-secondary" type="submit" id="save"><i class="bi bi-share"></i> Partager ce PDF</button>
+                        </div>
+                  </form>
+                  <form id="form_pdf" action="/sign" method="post" enctype="multipart/form-data">
+                        <input id="input_pdf" name="pdf" type="file" class="d-none" />
+                        <input id="input_svg" name="svg[]" type="file" class="d-none" />
+                        <div class="d-grid gap-2 mt-2">
+                            <button class="btn btn-primary" disabled="disabled" type="submit" id="save"><i class="bi bi-download"></i> Télécharger le PDF Signé</button>
+                        </div>
+                  </form>
+              </div>
             </div>
         </div>
         <div class="position-fixed top-0 start-0 bg-white w-100 p-2 shadow-sm d-md-none">

From a41155c9509501f65a06445d264fd3337f7462c5 Mon Sep 17 00:00:00 2001
From: Vincent LAURENT <vince.laurent@gmail.com>
Date: Thu, 31 Mar 2022 11:46:03 +0200
Subject: [PATCH 2/3] Share upload file original and redirect to a new route
 with a hash

---
 app.php                | 39 +++++++++++++++++++++++++++++++++++++++
 public/js/signature.js |  1 +
 2 files changed, 40 insertions(+)

diff --git a/app.php b/app.php
index 1b054cf..53c6298 100644
--- a/app.php
+++ b/app.php
@@ -53,6 +53,18 @@ $f3->route('GET /signature',
         echo View::instance()->render('signature.html.php');
     }
 );
+
+$f3->route('GET /signature/@hash',
+    function($f3, $param) {
+        $f3->set('hash', $param['hash']);
+
+        $f3->set('maxSize',  min(array(convertPHPSizeToBytes(ini_get('post_max_size')), convertPHPSizeToBytes(ini_get('upload_max_filesize')))));
+        $f3->set('maxPage',  ini_get('max_file_uploads') - 1);
+
+        echo View::instance()->render('signature.html.php');
+    }
+);
+
 $f3->route('GET /organization',
     function($f3) {
         $f3->set('maxSize',  min(array(convertPHPSizeToBytes(ini_get('post_max_size')), convertPHPSizeToBytes(ini_get('upload_max_filesize')))));
@@ -151,6 +163,33 @@ $f3->route('POST /sign',
     }
 );
 
+$f3->route('POST /share',
+    function($f3) {
+        $hash = substr(hash('sha512', uniqid().rand()), 0, 20);
+        $sharingFolder = $f3->get('STORAGE').$hash."/";
+        $f3->set('UPLOADS', $sharingFolder);
+        mkdir($sharingFolder);
+        $filename = "original.pdf";
+
+        $files = Web::instance()->receive(function($file,$formFieldName){
+            if(strpos(Web::instance()->mime($file['tmp_name'], true), 'application/pdf') !== 0) {
+                $f3->error(403);
+            }
+
+            return true;
+        }, false, function($fileBaseName, $formFieldName) use ($filename) {
+
+            return $filename;
+	    });
+
+        if(!count($files)) {
+            $f3->error(403);
+        }
+        $f3->reroute('/signature/'.$hash);
+    }
+
+);
+
 $f3->route('POST /organize',
     function($f3) {
         $filename = null;
diff --git a/public/js/signature.js b/public/js/signature.js
index f04f321..262ee0e 100644
--- a/public/js/signature.js
+++ b/public/js/signature.js
@@ -28,6 +28,7 @@ var loadPDF = async function(pdfBlob, filename) {
         type: 'application/pdf'
     }));
     document.getElementById('input_pdf').files = dataTransfer.files;
+    document.getElementById('input_pdf_share').files = dataTransfer.files;
 
     var loadingTask = pdfjsLib.getDocument(url);
     loadingTask.promise.then(function(pdf) {

From b6dad1dcf50a4eae3be746ce1062d8fd5307a8a7 Mon Sep 17 00:00:00 2001
From: Vincent LAURENT <vince.laurent@gmail.com>
Date: Thu, 31 Mar 2022 11:53:55 +0200
Subject: [PATCH 3/3] Loading pdf from hash

---
 public/js/signature.js       | 15 ++++++++++++++-
 templates/signature.html.php |  4 ++++
 2 files changed, 18 insertions(+), 1 deletion(-)

diff --git a/public/js/signature.js b/public/js/signature.js
index 262ee0e..d5fccb6 100644
--- a/public/js/signature.js
+++ b/public/js/signature.js
@@ -947,7 +947,15 @@ var pageSignature = async function(url) {
         fontCaveat = font;
     });
 
-    let pdfBlob = await getPDFBlobFromCache(url);
+    if(hash) {
+        var response = await fetch(url);
+        if(response.status != 200) {
+            return;
+        }
+        let pdfBlob = await response.blob();
+    } else {
+        let pdfBlob = await getPDFBlobFromCache(url);
+    }
     if(!pdfBlob) {
         document.location = '/signature';
         return;
@@ -962,6 +970,11 @@ var pageSignature = async function(url) {
 };
 
 (function () {
+    if(hash) {
+        pageSignature('/signature/'+hash+'/pdf');
+        return;
+    }
+
     if(window.location.hash && window.location.hash.match(/^\#http/)) {
         let hashUrl = window.location.hash.replace(/^\#/, '');
         pageUpload();
diff --git a/templates/signature.html.php b/templates/signature.html.php
index 488fd17..b8d61a0 100644
--- a/templates/signature.html.php
+++ b/templates/signature.html.php
@@ -157,6 +157,10 @@
     <script>
     var maxSize = <?php echo $maxSize ?>;
     var maxPage = <?php echo $maxPage ?>;
+    var hash = null;
+    <?php if(isset($hash)): ?>
+    hash = "<?php echo $hash ?>";
+    <?php endif; ?>
     </script>
     <script src="/js/signature.js?202203261059"></script>
   </body>