commit 415c44b3f29964eb50152227b3642116c412927b
author Tyler Wear <twear@codeaurora.org> Mon Nov 06 18:34:11 2017 -0800
committer Niranjan Pendharkar <npendhar@quicinc.com> Thu Jun 14 17:39:05 2018 +0000
tree 51399863a6c85946187f4663695cac05969240ae
parent f7d506cc3c7e6344f121ec8b231fbd10c0e980f0

netd: Active FTP Helper

Enable conntrack helper for active FTP connections when
tethering is started.

Bug:69265432
CRs-fixed:2136660

Test: as follows
      - Boot device - Pass
      - Start tethering - Pass
      - Start active FTP on tethered host (USB) - Pass
      - Download file over FTP - Pass
      - make -j64 netd_unit_test
            adb shell /data/nativetest64/netd_unit_test/netd_unit_test - Pass

Change-Id: I5c812afe9602e80ea1c42d0cafba40fe6019a995

server/TetherController.cpp

diff --git a/server/TetherController.cpp b/server/TetherController.cpp
index d134099..ffc9af5 100644
--- a/server/TetherController.cpp
+++ b/server/TetherController.cpp
@@ -645,6 +645,10 @@
     }
 
     std::vector<std::string> v4 = {
+        "*raw",
+        StringPrintf("%s %s -p tcp --dport 21 -i %s -j CT --helper ftp",
+                     op, LOCAL_RAW_PREROUTING, intIface),
+        "COMMIT",
         "*filter",
         StringPrintf("%s %s -i %s -o %s -m state --state ESTABLISHED,RELATED -g %s",
                      op, LOCAL_FORWARD, extIface, intIface, LOCAL_TETHER_COUNTERS_CHAIN),