From 99f7613c53168fbabfb8f820ee38408966914807 Mon Sep 17 00:00:00 2001
From: maxkoryukov <maxkoryukov@yandex.ru>
Date: Wed, 20 Apr 2016 06:49:06 +0500
Subject: [PATCH] FIX: an opprotunity to set HTTP-header, used by CherryPy to
 determine origin url of proxy (when HP works behind proxy)

see #rembo10/headphones#2616
---
 Headphones.py                             |  1 +
 headphones/config/definitions/advanced.py | 31 ++++++++++++++++-------
 headphones/webstart.py                    |  7 +++++
 3 files changed, 30 insertions(+), 9 deletions(-)

diff --git a/Headphones.py b/Headphones.py
index dc956a43e..229ab28bc 100755
--- a/Headphones.py
+++ b/Headphones.py
@@ -186,6 +186,7 @@ def main():
         'http_host': headphones.CONFIG.HTTP_HOST,
         'http_root': headphones.CONFIG.HTTP_ROOT,
         'http_proxy': headphones.CONFIG.HTTP_PROXY,
+        'http_proxy_header_host': headphones.CONFIG.HTTP_PROXY_HEADER_HOST,
         'enable_https': headphones.CONFIG.ENABLE_HTTPS,
         'https_cert': headphones.CONFIG.HTTPS_CERT,
         'https_key': headphones.CONFIG.HTTPS_KEY,
diff --git a/headphones/config/definitions/advanced.py b/headphones/config/definitions/advanced.py
index 7268e2c8d..d6ddb0770 100644
--- a/headphones/config/definitions/advanced.py
+++ b/headphones/config/definitions/advanced.py
@@ -434,18 +434,31 @@ def reg(_extend_cb):
     # =======================================================================================
     opts.extend([
         BlockExtension('advanced_http_paths', caption=_("Advanced HTTP"), options=_extend_cb(
-          OptionBool('HTTP_PROXY', 'General', False,
-                     label=_('Behind proxy'),
-                     caption=_('Headphones works behind proxy, and should be careful with generated urls'),
-                     ),
-          OptionString('HTTP_ROOT', 'General', '/',
-                       label=_('HTTP root'),
-                       caption=_('The base part of the URL, without hostname. Just path to home-page of HP.'),
-                       ),
+            OptionSwitch('HTTP_PROXY', 'General', False,
+                         label=_('Behind proxy'),
+                         caption=_('Headphones works behind proxy, HP will modify url appropriately'),
+                         options=_extend_cb(
+                             OptionDropdown('HTTP_PROXY_HEADER_HOST', 'General', '', initype=str,
+                                label=_('HTTP header with external hostname'),
+                                tooltip=_('The name of HTTP header, which will be used by'
+                                          ' CherryPy.tool.proxy.local to determine the external proxy name'),
+                                caption=_('For example, Apache uses "X-Forwarded-Host"'),
+                                items=(
+                                    ('', _('Default behaviour')),
+                                    ('X-Forwarded-Host', _('Apache [X-Forwarded-Host]')),
+                                    ('X-Host', _('Lighttpd [X-Host]')),
+                                    ('Host', _('Nginx [Host]')),
+                                )
+                             ),
+                         ),
+            ),
+            OptionString('HTTP_ROOT', 'General', '/',
+                         label=_('HTTP root'),
+                         caption=_('The base part of the URL, without hostname. Just path to home-page of HP.'),
+                         ),
         )),
     ])
 
-
     opts.extend([
         BlockExtension('advanced_forgotten', caption=_("Strange hidden options"), options=_extend_cb(
             MessageExtension(
diff --git a/headphones/webstart.py b/headphones/webstart.py
index cc6392216..d31a2feaa 100644
--- a/headphones/webstart.py
+++ b/headphones/webstart.py
@@ -111,6 +111,13 @@ def initialize(options):
         })
         conf['/api'] = {'tools.auth_basic.on': False}
 
+    if options['http_proxy'] and options['http_proxy_header_host']:
+        logger.info("Work behind proxy enabled, and usage of specific HTTP-header"
+                    " is forced: '%s'", options['http_proxy_header_host'])
+        conf['/'].update({
+            'tools.proxy.local': options['http_proxy_header_host'],
+        })
+
     # Prevent time-outs
     cherrypy.engine.timeout_monitor.unsubscribe()
     cherrypy.tree.mount(WebInterface(), str(options['http_root']), config=conf)