[sr-dev] git:4.3:e5452003: pv: convert negative index to positive position for $branch(...)

Module: kamailio Branch: 4.3 Commit: e5452003a5219e50d26baa72e773fa1690b45a3d URL: https://github.com/kamailio/kamailio/commit/e5452003a5219e50d26baa72e773fa1… Author: Daniel-Constantin Mierla &lt;miconda(a)gmail.com&gt; Committer: Daniel-Constantin Mierla &lt;miconda(a)gmail.com&gt; Date: 2015-06-09T10:33:48+02:00 pv: convert negative index to positive position for $branch(...) - better access to branch structures (cherry picked from commit 6461b799ce64315b72b8e2f4f7e4617603330833) --- Modified: modules/pv/pv_branch.c --- Diff: https://github.com/kamailio/kamailio/commit/e5452003a5219e50d26baa72e773fa1… Patch: https://github.com/kamailio/kamailio/commit/e5452003a5219e50d26baa72e773fa1… --- diff --git a/modules/pv/pv_branch.c b/modules/pv/pv_branch.c index e35330a..34626b3 100644 --- a/modules/pv/pv_branch.c +++ b/modules/pv/pv_branch.c @@ -133,6 +133,16 @@ int pv_set_branchx_helper(sip_msg_t *msg, pv_param_t *param, LM_ERR("invalid index\n"); return -1; } + if(idx<0) + { + if((int)nr_branches + idx >= 0) { + idx += nr_branches; + } else { + LM_ERR("index too low: %d (%u)\n", idx, nr_branches); + return -1; + } + } + LM_DBG("managing branch index %d (%u)\n", idx, nr_branches); br = get_sip_branch(idx); }