X-Git-Url: http://dolda2000.com/gitweb/?a=blobdiff_plain;f=wrw%2Fdispatch.py;h=5276892ac9e1abbc8250a92f07d78cdc0722e052;hb=537064f6656c313c601126692d31628a85de663d;hp=b6009af680a3ed302c5a5b201ec7882ca35ac7fb;hpb=c33f2d6c068bf96c56e8e6966340f5f6e448df96;p=wrw.git

diff --git a/wrw/dispatch.py b/wrw/dispatch.py
index b6009af..5276892 100644
--- a/wrw/dispatch.py
+++ b/wrw/dispatch.py
@@ -1,3 +1,6 @@
+import sys, traceback
+from . import env, req, proto
+
 __all__ = ["restart"]
 
 class restart(Exception):
@@ -13,7 +16,21 @@ def mangle(result):
         return result
     return [str(result)]
 
+def defaulterror(req, excinfo):
+    from . import resp
+    traceback.print_exception(*excinfo)
+    raise resp.httperror(500)
+
+def wraphandler(handler, excinfo):
+    def wrapped(req):
+        return handler(req, excinfo)
+    wrapped.__wrapped__ = handler
+    return wrapped
+
+errorhandler = env.var(defaulterror)
+
 def handle(req, startreq, handler):
+    eh = errorhandler.val
     try:
         resp = [""]
         while True:
@@ -22,7 +39,18 @@ def handle(req, startreq, handler):
                 break
             except restart as i:
                 handler = i.handle
+            except Exception as i:
+                if eh is None:
+                    raise
+                handler = wraphandler(eh, sys.exc_info())
+                eh = None
         req.commit(startreq)
         return resp
     finally:
         req.cleanup()
+
+def handleenv(env, startreq, handler):
+    if not "HTTP_HOST" in env:
+        return proto.simpleerror(env, startreq, 400, "Bad Request", "Request must include Host header.")
+    r = req.origrequest(env)
+    return handle(r, startreq, handler)