1 files changed, 150 insertions, 0 deletions
diff --git a/plugins/plugins/vcgn/cnat_v4_pptp_alg.h b/plugins/plugins/vcgn/cnat_v4_pptp_alg.h
new file mode 100644
index 00000000000..5a6d4243165
--- /dev/null
+++ b/plugins/plugins/vcgn/cnat_v4_pptp_alg.h
@@ -0,0 +1,150 @@
+/*
+ *------------------------------------------------------------------
+ * cnat_v4_pptp_alg.h
+ *
+ * Copyright (c) 2009-2013 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *------------------------------------------------------------------
+ */
+
+#ifndef __CNAT_V4_PPTP_ALG_H__
+#define __CNAT_V4_PPTP_ALG_H__
+
+/* Debug utils of PPTP */
+#define PPTP_DBG(debug, ...)  \
+            if(PREDICT_FALSE(cnat_pptp_debug_flag >= debug)) { \
+                    PLATFORM_DEBUG_PRINT("%s:%s:%d - ", \
+                           __FILE__, __FUNCTION__, __LINE__);\
+                    PLATFORM_DEBUG_PRINT(__VA_ARGS__);\
+                    PLATFORM_DEBUG_PRINT("\n"); \
+            } 
+
+#define PPTP_DUMP_PACKET(ip, len) pptp_hex_dump(ip, len)
+
+
+#define PPTP_DISABLED  0 
+#define PPTP_ENABLED   1
+
+#define PPTP_GRE_TIMEOUT  60 /*sec */
+
+#define TCP_PPTP_PORT 1723
+
+#define PPTP_PAC 0 
+#define PPTP_PNS 1
+
+/* PPTP MSG TYPE */
+
+#define PPTP_MSG_TYPE_CONTROL  1
+#define PPTP_MSG_TYPE_MGMT     2 
+
+/* PPTP control messages */
+
+/* control connection mgmt */ 
+#define PPTP_START_CC_RQ           1 
+#define PPTP_START_CC_RP           2 
+#define PPTP_STOP_CC_RQ            3 
+#define PPTP_STOP_CC_RP            4 
+#define PPTP_ECHO_RQ               5 
+#define PPTP_ECHO_RP               6 
+
+/* call mgmt */
+#define PPTP_OBOUND_CALL_RQ        7 
+#define PPTP_OBOUND_CALL_RP        8 
+#define PPTP_IBOUND_CALL_RQ        9 
+#define PPTP_IBOUND_CALL_RP        10 
+#define PPTP_IBOUND_CALL_CN        11 
+#define PPTP_CALL_CLEAR_RQ         12 
+#define PPTP_CALL_DISCON_NT        13 
+
+/* other */
+
+#define PPTP_WAN_ERR_NT            14
+#define PPTP_SET_LINK_INF          15
+
+#define PPTP_MIN_HDR_LEN           8
+
+/* Byte offsets from start of TCP Data(PPTP header) */ 
+
+#define PPTP_CTRL_MGMT_TYPE_OFFSET   0x02 
+#define PPTP_CC_TYPE_OFFSET          0x08
+#define PPTP_HDR_CALL_ID_OFFSET      0x0c 
+#define PPTP_HDR_PEER_CALL_ID_OFFSET 0x0e 
+
+#define PPTP_HDR_RESULT_CODE_OFFSET_STCCRP 0x0e 
+#define PPTP_HDR_RESULT_CODE_OFFSET        0x10 
+
+
+/* Offset of control/mgmt msg types 
+            from start of TCP header */ 
+
+#define TCP_HEADER_SIZE(tcp)   \
+                  ((tcp->hdr_len>>4) << 2)
+
+  
+#define PPTP_MSG_START_OFFSET(tcp)    \
+                  ((u8*)tcp + TCP_HEADER_SIZE(tcp))
+
+
+#define PPTP_CC_MSG_TYPE_OFFSET(tcp) \
+                  (PPTP_MSG_START_OFFSET(tcp) + \
+                  PPTP_CC_TYPE_OFFSET )
+
+#define PPTP_MGMT_MSG_TYPE_OFFSET(tcp) \
+                  ( PPTP_MSG_START_OFFSET(tcp) + \
+                  PPTP_CTRL_MGMT_TYPE_OFFSET )
+
+#define PPTP_CALL_ID_OFFSET(tcp) \
+                   ( PPTP_MSG_START_OFFSET(tcp) + \
+                   PPTP_HDR_CALL_ID_OFFSET )
+
+#define PPTP_PEER_CALL_ID_OFFSET(tcp) \
+                   ( PPTP_MSG_START_OFFSET(tcp) + \
+                   PPTP_HDR_PEER_CALL_ID_OFFSET )
+
+#define PPTP_RESULT_CODE_OFFSET(tcp) \
+                   ( PPTP_MSG_START_OFFSET(tcp) + \
+                   PPTP_HDR_RESULT_CODE_OFFSET )
+
+#define PPTP_RESULT_CODE_OFFSET_STCCRP(tcp) \
+                   ( PPTP_MSG_START_OFFSET(tcp) + \
+                   PPTP_HDR_RESULT_CODE_OFFSET_STCCRP)
+
+/* values */
+#define PPTP_CC_MSG_TYPE(tcp) \
+              (u16*)PPTP_CC_MSG_TYPE_OFFSET(tcp)
+
+#define PPTP_MGMT_MSG_TYPE(tcp) \
+              (u16*)PPTP_MGMT_MSG_TYPE_OFFSET(tcp)
+
+#define PPTP_CALL_ID(tcp) \
+              (u16*)PPTP_CALL_ID_OFFSET(tcp)
+
+#define PPTP_PEER_CALL_ID(tcp) \
+              (u16*)PPTP_PEER_CALL_ID_OFFSET(tcp)
+
+#define PPTP_RESULT_CODE(tcp) \
+              *(u8*)PPTP_RESULT_CODE_OFFSET(tcp);
+              
+#define PPTP_RESULT_CODE_STCCRP(tcp) \
+              *(u8*)PPTP_RESULT_CODE_OFFSET_STCCRP(tcp);
+
+
+/* other code */
+#define PPTP_CHAN_SUCCESS   1
+
+
+/* Data structures */
+
+extern u32 cnat_pptp_debug_flag;
+
+#endif /* __CNAT_V4_PPTP_ALG_H__ */