From 3f72c3fffe18f4977bbed66f4084bd0a4ef83660 Mon Sep 17 00:00:00 2001
From: _Fervor_ <87570146+UFervor@users.noreply.github.com>
Date: Fri, 3 Feb 2023 23:31:49 +0800
Subject: [PATCH 1/2] Update web.py

---
 cps/web.py | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/cps/web.py b/cps/web.py
index 3a575d9e..5fbf9c07 100644
--- a/cps/web.py
+++ b/cps/web.py
@@ -1159,7 +1159,14 @@ def serve_book(book_id, book_format, anyname):
     data = calibre_db.get_book_format(book_id, book_format.upper())
     if not data:
         return "File not in Database"
-    log.info('Serving book: %s', data.name)
+    
+    range_header = request.headers.get('Range', None)
+    if not range_header:
+        log.info('Serving book: %s', data.name)
+        response = make_response(send_from_directory(os.path.join(config.config_calibre_dir, book.path), data.name + "." + book_format))
+        response.headers['Accept-Ranges'] = 'bytes'
+        return response
+    
     if config.config_use_google_drive:
         try:
             headers = Headers()

From 6da7d05c6c38ae00613fdee7ab0621ef5363ba42 Mon Sep 17 00:00:00 2001
From: _Fervor_ <87570146+UFervor@users.noreply.github.com>
Date: Fri, 3 Feb 2023 23:34:55 +0800
Subject: [PATCH 2/2] Update readpdf.html

---
 cps/templates/readpdf.html | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/cps/templates/readpdf.html b/cps/templates/readpdf.html
index e2876c61..2eb9b73d 100644
--- a/cps/templates/readpdf.html
+++ b/cps/templates/readpdf.html
@@ -43,7 +43,9 @@ See https://github.com/adobe-type-tools/cmap-resources
     <script type="text/javascript">
     window.addEventListener('webviewerloaded', function() {
         PDFViewerApplicationOptions.set('disableAutoFetch', true);
-        PDFViewerApplicationOptions.set('disableRange', true);
+        PDFViewerApplicationOptions.set('disableRange', false);
+        PDFViewerApplicationOptions.set('disableStream', true);
+        PDFViewerApplicationOptions.set('disablePreferences', true);
         PDFViewerApplicationOptions.set('cMapUrl', "{{ url_for('static', filename='cmaps/') }}");
         PDFViewerApplicationOptions.set('sidebarViewOnLoad', 0);
         PDFViewerApplicationOptions.set('imageResourcesPath', "{{ url_for('static', filename='css/images/') }}");