Change the way proxy authetication is specified

We now have one option "proxyauth". If this is "any", we accept any
credentials, if it starts with an @ it's treated as a path to an htpasswd file,
if it is of the form username:password it's a single-user credential.

mitmproxy/addons/proxyauth.py

@@ -114,30 +114,28 @@ class ProxyAuth:
 
     # Handlers
     def configure(self, options, updated):
-        if "auth_nonanonymous" in updated:
-            self.nonanonymous = options.auth_nonanonymous
-        if "auth_singleuser" in updated:
-            if options.auth_singleuser:
-                parts = options.auth_singleuser.split(':')
+        if "proxyauth" in updated:
+            self.nonanonymous = False
+            self.singleuser = None
+            self.htpasswd = None
+            if options.proxyauth:
+                if options.proxyauth == "any":
+                    self.nonanonymous = True
+                elif options.proxyauth.startswith("@"):
+                    p = options.proxyauth[1:]
+                    try:
+                        self.htpasswd = passlib.apache.HtpasswdFile(p)
+                    except (ValueError, OSError) as v:
+                        raise exceptions.OptionsError(
+                            "Could not open htpasswd file: %s" % p
+                        )
+                else:
+                    parts = options.proxyauth.split(':')
                     if len(parts) != 2:
                         raise exceptions.OptionsError(
                             "Invalid single-user auth specification."
                         )
                     self.singleuser = parts
-            else:
-                self.singleuser = None
-        if "auth_htpasswd" in updated:
-            if options.auth_htpasswd:
-                try:
-                    self.htpasswd = passlib.apache.HtpasswdFile(
-                        options.auth_htpasswd
-                    )
-                except (ValueError, OSError) as v:
-                    raise exceptions.OptionsError(
-                        "Could not open htpasswd file: %s" % v
-                    )
-            else:
-                self.htpasswd = None
         if "mode" in updated:
             self.mode = options.mode
         if self.enabled():

mitmproxy/options.py

@@ -203,20 +203,15 @@ class Options(optmanager.OptManager):
 
         # Proxy options
         self.add_option(
-            "auth_nonanonymous", False, bool,
-            "Allow access to any user long as a credentials are specified."
-        )
-        self.add_option(
-            "auth_singleuser", None, Optional[str],
+            "proxyauth", None, Optional[str],
             """
-            Allows access to a a single user, specified in the form
-            username:password.
+            Require authentication before proxying requests. If the value is
+            "any", we prompt for authentication, but permit any values. If it
+            starts with an "@", it is treated as a path to an Apache htpasswd
+            file. If its is of the form "username:password", it is treated as a
+            single-user credential.
             """
         )
-        self.add_option(
-            "auth_htpasswd", None, Optional[str],
-            "Allow access to users specified in an Apache htpasswd file."
-        )
         self.add_option(
             "add_upstream_certs_to_client_chain", False, bool,
             """

mitmproxy/tools/cmdline.py

@@ -107,9 +107,7 @@ def common_options(parser, opts):
             used for authenticating them.
         """
     ).add_mutually_exclusive_group()
-    opts.make_parser(group, "auth_nonanonymous")
-    opts.make_parser(group, "auth_singleuser", metavar="USER:PASS")
-    opts.make_parser(group, "auth_htpasswd", metavar="PATH")
+    opts.make_parser(group, "proxyauth", metavar="SPEC")
 
 
 def mitmproxy(opts):

test/mitmproxy/addons/test_proxyauth.py

@@ -28,40 +28,43 @@ def test_configure():
     up = proxyauth.ProxyAuth()
     with taddons.context() as ctx:
         with pytest.raises(exceptions.OptionsError):
-            ctx.configure(up, auth_singleuser="foo")
+            ctx.configure(up, proxyauth="foo")
 
-        ctx.configure(up, auth_singleuser="foo:bar")
+        ctx.configure(up, proxyauth="foo:bar")
         assert up.singleuser == ["foo", "bar"]
 
-        ctx.configure(up, auth_singleuser=None)
+        ctx.configure(up, proxyauth=None)
         assert up.singleuser is None
 
-        ctx.configure(up, auth_nonanonymous=True)
+        ctx.configure(up, proxyauth="any")
         assert up.nonanonymous
-        ctx.configure(up, auth_nonanonymous=False)
+        ctx.configure(up, proxyauth=None)
         assert not up.nonanonymous
 
         with pytest.raises(exceptions.OptionsError):
-            ctx.configure(up, auth_htpasswd=tutils.test_data.path("mitmproxy/net/data/server.crt"))
+            ctx.configure(
+                up,
+                proxyauth= "@" + tutils.test_data.path("mitmproxy/net/data/server.crt")
+            )
         with pytest.raises(exceptions.OptionsError):
-            ctx.configure(up, auth_htpasswd="nonexistent")
+            ctx.configure(up, proxyauth="@nonexistent")
 
         ctx.configure(
             up,
-            auth_htpasswd=tutils.test_data.path(
+            proxyauth= "@" + tutils.test_data.path(
                 "mitmproxy/net/data/htpasswd"
             )
         )
         assert up.htpasswd
         assert up.htpasswd.check_password("test", "test")
         assert not up.htpasswd.check_password("test", "foo")
-        ctx.configure(up, auth_htpasswd=None)
+        ctx.configure(up, proxyauth=None)
         assert not up.htpasswd
 
         with pytest.raises(exceptions.OptionsError):
-            ctx.configure(up, auth_nonanonymous=True, mode="transparent")
+            ctx.configure(up, proxyauth="any", mode="transparent")
         with pytest.raises(exceptions.OptionsError):
-            ctx.configure(up, auth_nonanonymous=True, mode="socks5")
+            ctx.configure(up, proxyauth="any", mode="socks5")
 
         ctx.configure(up, mode="regular")
         assert up.mode == "regular"
@@ -70,7 +73,7 @@ def test_configure():
 def test_check():
     up = proxyauth.ProxyAuth()
     with taddons.context() as ctx:
-        ctx.configure(up, auth_nonanonymous=True, mode="regular")
+        ctx.configure(up, proxyauth="any", mode="regular")
         f = tflow.tflow()
         assert not up.check(f)
         f.request.headers["Proxy-Authorization"] = proxyauth.mkauth(
@@ -86,18 +89,17 @@ def test_check():
         )
         assert not up.check(f)
 
-        ctx.configure(up, auth_nonanonymous=False, auth_singleuser="test:test")
+        ctx.configure(up, proxyauth="test:test")
         f.request.headers["Proxy-Authorization"] = proxyauth.mkauth(
             "test", "test"
         )
         assert up.check(f)
-        ctx.configure(up, auth_nonanonymous=False, auth_singleuser="test:foo")
+        ctx.configure(up, proxyauth="test:foo")
         assert not up.check(f)
 
         ctx.configure(
             up,
-            auth_singleuser=None,
-            auth_htpasswd=tutils.test_data.path(
+            proxyauth="@" + tutils.test_data.path(
                 "mitmproxy/net/data/htpasswd"
             )
         )
@@ -114,7 +116,7 @@ def test_check():
 def test_authenticate():
     up = proxyauth.ProxyAuth()
     with taddons.context() as ctx:
-        ctx.configure(up, auth_nonanonymous=True, mode="regular")
+        ctx.configure(up, proxyauth="any", mode="regular")
 
         f = tflow.tflow()
         assert not f.response
@@ -147,7 +149,7 @@ def test_authenticate():
 def test_handlers():
     up = proxyauth.ProxyAuth()
     with taddons.context() as ctx:
-        ctx.configure(up, auth_nonanonymous=True, mode="regular")
+        ctx.configure(up, proxyauth="any", mode="regular")
 
         f = tflow.tflow()
         assert not f.response

test/mitmproxy/proxy/test_server.py

@@ -302,7 +302,7 @@ class TestHTTP(tservers.HTTPProxyTest, CommonMixin):
 class TestHTTPAuth(tservers.HTTPProxyTest):
     def test_auth(self):
         self.master.addons.add(proxyauth.ProxyAuth())
-        self.master.options.auth_singleuser = "test:test"
+        self.master.options.proxyauth = "test:test"
         assert self.pathod("202").status_code == 407
         p = self.pathoc()
         with p.connect():
@@ -321,7 +321,7 @@ class TestHTTPAuth(tservers.HTTPProxyTest):
 class TestHTTPReverseAuth(tservers.ReverseProxyTest):
     def test_auth(self):
         self.master.addons.add(proxyauth.ProxyAuth())
-        self.master.options.auth_singleuser = "test:test"
+        self.master.options.proxyauth = "test:test"
         assert self.pathod("202").status_code == 401
         p = self.pathoc()
         with p.connect():