[sr-dev] git:4.2:da34ecf1: pv: catch early setting $rU with empty string

Module: kamailio Branch: 4.2 Commit: da34ecf150ca91e98d32de144a3a77285e1e262c URL: https://github.com/kamailio/kamailio/commit/da34ecf150ca91e98d32de144a3a772… Author: Daniel-Constantin Mierla &lt;miconda(a)gmail.com&gt; Committer: Daniel-Constantin Mierla &lt;miconda(a)gmail.com&gt; Date: 2015-07-29T12:35:27+02:00 pv: catch early setting $rU with empty string - avoids backing up and restoring last char, which can create inappropriate access when using static empty string value (cherry picked from commit adf1bca4a820e9cb5fcc94a1953b0fcdbd8a20da) (cherry picked from commit 3551d707fa497554f3da767e9fba8e046f83b417) --- Modified: modules/pv/pv_core.c --- Diff: https://github.com/kamailio/kamailio/commit/da34ecf150ca91e98d32de144a3a772… Patch: https://github.com/kamailio/kamailio/commit/da34ecf150ca91e98d32de144a3a772… --- diff --git a/modules/pv/pv_core.c b/modules/pv/pv_core.c index 56253b8..fc96cb5 100644 --- a/modules/pv/pv_core.c +++ b/modules/pv/pv_core.c @@ -2095,7 +2095,8 @@ int pv_set_ruri_user(struct sip_msg* msg, pv_param_t *param, return -1; } - if((val==NULL) || (val->flags&PV_VAL_NULL)) + if((val==NULL) || (val->flags&PV_VAL_NULL) + || ((val->flags&PV_VAL_STR) && val->rs.len<=0)) { memset(&act, 0, sizeof(act)); act.type = SET_USER_T;