ftp: completely resets port_line

In the case port_line is first allocated and port_line_len is set,
Then a second request reaches memcap and frees port_line,
port_line_len should also be reset, because both will get used
by the response parsing.

Ticket: #5701

diff --git a/src/app-layer-ftp.c b/src/app-layer-ftp.c
index d0231b46acc522fbf1392fc891a14417ec7c8184..45e124bd28a401a214ee25cfc7cbe8bb92f54c0e 100644 (file)
--- a/src/app-layer-ftp.c
+++ b/src/app-layer-ftp.c
@@ -645,6 +645,7 @@ static AppLayerResult FTPParseRequest(Flow *f, void *ftp_state, AppLayerParserSt
                             FTPFree(state->port_line, state->port_line_size);
                             state->port_line = NULL;
                             state->port_line_size = 0;
+                            state->port_line_len = 0;
                         }
                         SCReturnStruct(APP_LAYER_OK);
                     }