1 files changed, 36 insertions, 5 deletions
diff --git a/libmproxy/proxy/primitives.py b/libmproxy/proxy/primitives.py
index 75ad5482..e49d9bb4 100644
--- a/libmproxy/proxy/primitives.py
+++ b/libmproxy/proxy/primitives.py
@@ -18,17 +18,48 @@ class ProxyServerError(Exception):
     pass
 
 
+class UpstreamServerResolver(object):
+    def __call__(self, conn):
+        """
+        Returns the address of the server to connect to.
+        """
+        raise NotImplementedError
+
+
+class ConstUpstreamServerResolver(UpstreamServerResolver):
+    def __init__(self, dst):
+        self.dst = dst
+
+    def __call__(self, conn):
+        return self.dst
+
+
+class TransparentUpstreamServerResolver(UpstreamServerResolver):
+    def __init__(self, resolver, sslports):
+        self.resolver = resolver
+        self.sslports = sslports
+
+    def __call__(self, conn):
+        dst = self.resolver.original_addr(conn)
+        if not dst:
+            raise ProxyError(502, "Transparent mode failure: could not resolve original destination.")
+
+        if dst[1] in self.sslports:
+            ssl = True
+        else:
+            ssl = False
+        return [ssl, ssl] + list(dst)
+
+
 class AddressPriority(object):
     """
     Enum that signifies the priority of the given address when choosing the destination host.
     Higher is better (None < i)
     """
-    MANUALLY_CHANGED = 4
+    MANUALLY_CHANGED = 3
     """user changed the target address in the ui"""
-    FROM_SETTINGS = 3
-    """upstream proxy from arguments (reverse proxy or forward proxy)"""
-    FROM_CONNECTION = 2
-    """derived from transparent resolver"""
+    FROM_SETTINGS = 2
+    """upstream server from arguments (reverse proxy, forward proxy or from transparent resolver)"""
     FROM_PROTOCOL = 1
     """derived from protocol (e.g. absolute-form http requests)"""