add redirect option after upload

README.md

@@ -34,6 +34,8 @@ In addition to *encoding*, *scaleX* and *scaleY* you may also use the following
 # Uploading
 This tool is not intended for uploading or large amounts of files, use SFTP/FTPS or whatever your server provides for. For pure convenience usage there is a */upload*/-location. It must be enabled by creating a file called *upload.enable* in the project root before the server is started.
 
+For automatic redirection after upload you must have a reverse proxy setting a header *X-REAL-HOSTNAME* with the internet facing hostname of the server.
+
 # With nginx as reverse-proxy
 
     server {
@@ -41,10 +43,12 @@ This tool is not intended for uploading or large amounts of files, use SFTP/FTPS
         location /{
             proxy_pass http://localhost:5000;
         }
+
         location /upload{
             auth_basic "Auth Message";
             auth_basic_user_file "/path/to/auth/file";
             client_max_body_size 50m; # <-- important!
+            proxy_set_header X-REAL-HOSTNAME $host;
             proxy_pass http://localhost:5000;
         }
     }

server.py

@@ -136,10 +136,15 @@ def upload():
         return ("Upload Disabled", 403)
     if flask.request.method == 'POST':
         f = flask.request.files['file']
-        sfName = os.path.join(PICTURE_DIR, werkzeug.utils.secure_filename(f.filename))
+        fname = werkzeug.utils.secure_filename(f.filename)
+        sfName = os.path.join(PICTURE_DIR, fname)
         if not os.path.isfile(sfName):
             f.save(sfName)
-            return ('Success', 204)
+            realHostname = flask.request.headers.get("X-REAL-HOSTNAME")
+            if realHostname:
+                return flask.redirect(realHostname + "/media/" + fname)
+            else:
+                return ('Success', 204)
         else:
             return ('Conflicting File', 409)
     else: