Show all HTTP headers in the headers panel.

Show a relevant subset of the WSGI environ separately.

Fix #62.

2 files changed, 52 insertions, 19 deletions

diff --git a/debug_toolbar/panels/headers.py b/debug_toolbar/panels/headers.py
index 4a10b5f..de47c0e 100644
--- a/debug_toolbar/panels/headers.py
+++ b/debug_toolbar/panels/headers.py
@@ -1,5 +1,9 @@
 from __future__ import unicode_literals
 
+try:
+    from collections import OrderedDict
+except ImportError:
+    from django.utils.datastructures import SortedDict as OrderedDict
 from django.utils.translation import ugettext_lazy as _
 from debug_toolbar.panels import DebugPanel
 
@@ -11,20 +15,15 @@ class HeaderDebugPanel(DebugPanel):
     name = 'Header'
     template = 'debug_toolbar/panels/headers.html'
     has_content = True
-    # List of headers we want to display
-    header_filter = (
+    # List of environment variables we want to display
+    environ_filter = set((
+        'CONTENT_LENGTH',
         'CONTENT_TYPE',
-        'HTTP_ACCEPT',
-        'HTTP_ACCEPT_CHARSET',
-        'HTTP_ACCEPT_ENCODING',
-        'HTTP_ACCEPT_LANGUAGE',
-        'HTTP_CACHE_CONTROL',
-        'HTTP_CONNECTION',
-        'HTTP_HOST',
-        'HTTP_KEEP_ALIVE',
-        'HTTP_REFERER',
-        'HTTP_USER_AGENT',
+        'DJANGO_SETTINGS_MODULE',
+        'GATEWAY_INTERFACE',
         'QUERY_STRING',
+        'PATH_INFO',
+        'PYTHONPATH',
         'REMOTE_ADDR',
         'REMOTE_HOST',
         'REQUEST_METHOD',
@@ -33,23 +32,33 @@ class HeaderDebugPanel(DebugPanel):
         'SERVER_PORT',
         'SERVER_PROTOCOL',
         'SERVER_SOFTWARE',
-    )
+        'TZ',
+    ))
 
     def nav_title(self):
-        return _('HTTP Headers')
+        return _('Headers')
 
     def title(self):
-        return _('HTTP Headers')
+        return _('Headers')
 
     def url(self):
         return ''
 
     def process_request(self, request):
-        self.headers = dict(
-            [(k, request.META[k]) for k in self.header_filter if k in request.META]
-        )
+        wsgi_env = list(sorted(request.META.items()))
+        self.headers = OrderedDict(
+            (unmangle(k), v) for (k, v) in wsgi_env if k.startswith('HTTP_'))
+        if 'Cookie' in self.headers:
+            self.headers['Cookie'] = '<< see Request Vars panel >>'
+        self.environ = OrderedDict(
+            (k, v) for (k, v) in wsgi_env if k in self.environ_filter)
 
     def process_response(self, request, response):
         self.record_stats({
-            'headers': self.headers
+            'headers': self.headers,
+            'environ': self.environ,
         })
+
+
+def unmangle(wsgi_key):
+    return wsgi_key[5:].replace('_', '-').title()
diff --git a/debug_toolbar/templates/debug_toolbar/panels/headers.html b/debug_toolbar/templates/debug_toolbar/panels/headers.html
index 981b847..6b057e9 100644
--- a/debug_toolbar/templates/debug_toolbar/panels/headers.html
+++ b/debug_toolbar/templates/debug_toolbar/panels/headers.html
@@ -1,4 +1,7 @@
 {% load i18n %}
+
+<h4>{% trans "HTTP Headers" %}</h4>
+
 <table>
 	<thead>
 		<tr>
@@ -15,3 +18,24 @@
 		{% endfor %}
 	</tbody>
 </table>
+
+<h4>{% trans "WSGI environ" %}</h4>
+
+<p>{% trans "Since the WSGI environ inherits the environment of the server, only a subset is shown below." %}</p>
+
+<table>
+	<thead>
+		<tr>
+			<th>{% trans "Key" %}</th>
+			<th>{% trans "Value" %}</th>
+		</tr>
+	</thead>
+	<tbody>
+		{% for key, value in environ.items %}
+			<tr class="{% cycle 'djDebugOdd' 'djDebugEven' %}">
+				<td>{{ key|escape }}</td>
+				<td>{{ value|escape }}</td>
+			</tr>
+		{% endfor %}
+	</tbody>
+</table>