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freetdm: restrict GRS CLI request range to stay within sane boundaries

This commit is contained in:
Moises Silva 2011-07-28 12:32:22 -04:00
parent 3c731ed968
commit 227971b340
3 changed files with 28 additions and 43 deletions
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7
libs/freetdm/src/ftmod/ftmod_sangoma_ss7/ftmod_sangoma_ss7_cli.c
View File

@ -1625,7 +1625,12 @@ static ftdm_status_t handle_tx_grs(ftdm_stream_handle_t *stream, int span, int c
int basefound = 0;
if (range > 31) {
stream->write_function(stream, "Invalid range value %d", range);
stream->write_function(stream, "Range value %d is too big for a GRS", range);
return FTDM_SUCCESS;
}
if (range < 2) {
stream->write_function(stream, "Range value %d is too small for a GRS", range);
return FTDM_SUCCESS;
}

3
libs/freetdm/src/ftmod/ftmod_sangoma_ss7/ftmod_sangoma_ss7_main.c
View File

@ -962,9 +962,8 @@ ftdm_status_t ftdm_sangoma_ss7_process_state_change (ftdm_channel_t * ftdmchan)
/* send out the grs */
ft_to_sngss7_grs (ftdmchan);
sngss7_set_ckt_flag(sngss7_info, FLAG_GRP_RESET_SENT);
}/* if ( sngss7_test_ckt_flag ( sngss7_info, FLAG_GRP_RESET_TX ) ) */
}
/* if the sig_status is up...bring it down */
if (ftdm_test_flag (ftdmchan, FTDM_CHANNEL_SIG_UP)) {

61
libs/freetdm/src/ftmod/ftmod_sangoma_ss7/ftmod_sangoma_ss7_out.c
View File

@ -461,57 +461,38 @@ void ft_to_sngss7_gra (ftdm_channel_t * ftdmchan)
}
/******************************************************************************/
void ft_to_sngss7_grs (ftdm_channel_t * ftdmchan)
void ft_to_sngss7_grs (ftdm_channel_t *fchan)
{
SS7_FUNC_TRACE_ENTER (__FUNCTION__);
ftdm_iterator_t *iter = NULL;
ftdm_iterator_t *curr = NULL;
sngss7_chan_data_t *cinfo = NULL;
sngss7_chan_data_t *sngss7_info = ftdmchan->call_data;
sngss7_chan_data_t *cinfo = fchan->call_data;
SiStaEvnt grs;
iter = ftdm_span_get_chan_iterator(ftdmchan->span, NULL);
curr = iter;
for (curr = iter; curr; curr = ftdm_iterator_next(curr)) {
ftdm_channel_t *fchan = ftdm_iterator_current(curr);
ftdm_assert(sngss7_test_ckt_flag(cinfo, FLAG_GRP_RESET_TX) &&
!sngss7_test_ckt_flag(cinfo, FLAG_GRP_RESET_SENT), "Incorrect flags\n");
ftdm_channel_lock(fchan);
memset (&grs, 0x0, sizeof(grs));
grs.rangStat.eh.pres = PRSNT_NODEF;
grs.rangStat.range.pres = PRSNT_NODEF;
grs.rangStat.range.val = cinfo->tx_grs.range;
cinfo = fchan->call_data;
sng_cc_sta_request (1,
0,
0,
cinfo->tx_grs.circuit,
0,
SIT_STA_GRSREQ,
&grs);
if (!cinfo->tx_grs.range) {
SS7_INFO_CHAN(fchan, "[CIC:%d]Tx GRS (%d:%d)\n",
cinfo->circuit->cic,
cinfo->circuit->cic,
(cinfo->circuit->cic + cinfo->tx_grs.range));
ftdm_channel_unlock(fchan);
memset(&cinfo->tx_grs, 0, sizeof(cinfo->tx_grs));
continue;
}
memset (&grs, 0x0, sizeof(grs));
grs.rangStat.eh.pres = PRSNT_NODEF;
grs.rangStat.range.pres = PRSNT_NODEF;
grs.rangStat.range.val = cinfo->tx_grs.range;
sng_cc_sta_request (1,
0,
0,
cinfo->tx_grs.circuit,
0,
SIT_STA_GRSREQ,
&grs);
SS7_INFO_CHAN(ftdmchan,"[CIC:%d]Tx GRS (%d:%d)\n",
sngss7_info->circuit->cic,
sngss7_info->circuit->cic,
(sngss7_info->circuit->cic + cinfo->tx_grs.range));
memset(&cinfo->tx_grs, 0, sizeof(cinfo->tx_grs));
ftdm_channel_unlock(fchan);
}
ftdm_iterator_free(iter);
sngss7_set_ckt_flag(cinfo, FLAG_GRP_RESET_SENT);
SS7_FUNC_TRACE_EXIT (__FUNCTION__);
}