1 files changed, 110 insertions, 0 deletions
diff --git a/src/hydrilla/proxy/policies/misc.py b/src/hydrilla/proxy/policies/misc.py
new file mode 100644
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--- /dev/null
+++ b/src/hydrilla/proxy/policies/misc.py
@@ -0,0 +1,110 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# Miscellaneous policies.
+#
+# This file is part of Hydrilla&Haketilo.
+#
+# Copyright (C) 2022 Wojtek Kosior
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+#
+#
+# I, Wojtek Kosior, thereby promise not to sue for violation of this
+# file's license. Although I request that you do not make use of this
+# code in a proprietary program, I am not going to enforce this in
+# court.
+
+"""
+.....
+"""
+
+import enum
+import traceback as tb
+import dataclasses as dc
+import typing as t
+
+from abc import ABC, abstractmethod
+
+from .. import state
+from .. import http_messages
+from . import base
+from .rule import AllowPolicy, BlockPolicy
+
+
+class FallbackAllowPolicy(AllowPolicy):
+    priority = base.PolicyPriority._ONE
+
+    def make_info_page(self, http_info: http_messages.FullHTTPInfo) \
+        -> t.Optional[str]:
+        template = self._get_info_template(
+            'js_fallback_allowed_info.html.jinja'
+        )
+        return template.render(url=http_info.request_info.url.orig_url)
+
+
+class FallbackBlockPolicy(BlockPolicy):
+    priority = base.PolicyPriority._ONE
+
+    def make_info_page(self, http_info: http_messages.FullHTTPInfo) \
+        -> t.Optional[str]:
+        template = self._get_info_template(
+            'js_fallback_blocked_info.html.jinja'
+        )
+        return template.render(url=http_info.request_info.url.orig_url)
+
+
+@dc.dataclass(frozen=True)
+class ErrorBlockPolicy(BlockPolicy):
+    error: Exception
+
+    @property
+    def traceback(self) -> str:
+        lines = tb.format_exception(None, self.error, self.error.__traceback__)
+        return ''.join(lines)
+
+    def make_info_page(self, http_info: http_messages.FullHTTPInfo) \
+        -> t.Optional[str]:
+        template = self._get_info_template('js_error_blocked_info.html.jinja')
+        return template.render(
+            url       = http_info.request_info.url.orig_url,
+            settings  = self.haketilo_settings,
+            traceback = self.traceback
+        )
+
+
+class MitmItPagePolicy(base.Policy):
+    """
+    A special policy class for handling of the magical mitm.it domain. It causes
+    request and response not to be modified in any way and also (unlike
+    FallbackAllowPolicy) prevents them from being streamed.
+    """
+    _process_request  = base.MsgProcessOpt.MUST
+    _process_response = base.MsgProcessOpt.MUST
+    anticache         = False
+
+    priority = base.PolicyPriority._THREE
+
+    def consume_request(self, request_info: http_messages.RequestInfo) -> None:
+        return None
+
+    def consume_response(self, http_info: http_messages.FullHTTPInfo) -> None:
+        return None
+
+@dc.dataclass(frozen=True, unsafe_hash=True)
+class MitmItPagePolicyFactory(base.PolicyFactory):
+    builtin: bool = True
+
+    def make_policy(self, haketilo_state: state.HaketiloState) \
+        -> MitmItPagePolicy:
+        return MitmItPagePolicy(haketilo_state.get_settings())