[sr-dev] git:master: pv: use local buffer to return empty val after s.strip

[Daniel-Constantin Mierla]

Module: sip-router
Branch: master
Commit: 3691d7b9a1142eaeba2521fe01d3c1c6e9ceef2b
URL:    http://git.sip-router.org/cgi-bin/gitweb.cgi/sip-router/?a=commit;h=3691d7b9a1142eaeba2521fe01d3c1c6e9ceef2b

Author: Daniel-Constantin Mierla <miconda at gmail.com>
Committer: Daniel-Constantin Mierla <miconda at gmail.com>
Date:   Tue Apr 20 17:45:25 2010 +0200

pv: use local buffer to return empty val after s.strip

- further assignments may want to ensure it is zero-terminated and cause
  crash
- reported by Juha Heinanen

---

 modules_k/pv/pv_trans.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/modules_k/pv/pv_trans.c b/modules_k/pv/pv_trans.c
index 9ddd125..dbe2ab7 100644
--- a/modules_k/pv/pv_trans.c
+++ b/modules_k/pv/pv_trans.c
@@ -442,7 +442,8 @@ int tr_eval_string(struct sip_msg *msg, tr_param_t *tp, int subtype,
 				break;
 			if(i>=val->rs.len)
 			{
-				val->rs.s = "";
+				_tr_buffer[0] = '\0';
+				val->rs.s = _tr_buffer;
 				val->rs.len = 0;
 				break;
 			}