From d27e1481571a0e2f5c7cbd5ae7c02377694dad44 Mon Sep 17 00:00:00 2001
From: sorz <orz@sorz.org>
Date: Mon, 21 Nov 2016 05:33:30 +0000
Subject: [PATCH] Fix lost of escape on frames

---
 sstpd/codecmodule.c | 8 +++++---
 sstpd/ppp.py        | 4 +++-
 2 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/sstpd/codecmodule.c b/sstpd/codecmodule.c
index 4be5a7a..50bf6ff 100644
--- a/sstpd/codecmodule.c
+++ b/sstpd/codecmodule.c
@@ -110,14 +110,16 @@ codec_unescape(PyObject *self, PyObject *args)
     const char* ldata; /* last unused unescaped data */
     int data_len;
     int ldata_len;
+    PyObject* py_escaped;
     char* buffer; /* frame buffer */
     int pos; /* length of frame */
     PyObject* frames;
-    bool escaped = false;
+    bool escaped;
     int i;
 
-    if (!PyArg_ParseTuple(args, "s#s#", &data, &data_len, &ldata, &ldata_len))
+    if (!PyArg_ParseTuple(args, "s#s#O", &data, &data_len, &ldata, &ldata_len, &py_escaped))
         return NULL;
+    escaped = PyObject_IsTrue(py_escaped);
 
     buffer = malloc(sizeof(char[data_len + ldata_len]));
     if (!buffer)
@@ -155,7 +157,7 @@ codec_unescape(PyObject *self, PyObject *args)
         }
     }
 
-    PyObject* result = Py_BuildValue("Ns#", frames, buffer, pos);
+    PyObject* result = Py_BuildValue("Ns#O", frames, buffer, pos, escaped ? Py_True : Py_False);
     free(buffer);
     return result;
 }
diff --git a/sstpd/ppp.py b/sstpd/ppp.py
index 593073e..f7358f4 100644
--- a/sstpd/ppp.py
+++ b/sstpd/ppp.py
@@ -14,6 +14,7 @@ class PPPDProtocol(ProcessProtocol):
 
     def __init__(self):
         self.frameBuffer = b''
+        self.frameEscaped = False
         self.paused = False
 
 
@@ -24,7 +25,8 @@ def writeFrame(self, frame):
     def outReceived(self, data):
         if __debug__:
             logging.log(VERBOSE, "Raw data: %s", hexdump(data))
-        frames, self.frameBuffer = unescape(data, self.frameBuffer)
+        frames, self.frameBuffer, self.frameEscaped = \
+                unescape(data, self.frameBuffer, self.frameEscaped)
         for frame in frames:
             self.pppFrameReceived(frame)