diff options
| -rw-r--r-- | openbsc/include/openbsc/bsc_nat.h | 2 | ||||
| -rw-r--r-- | openbsc/src/nat/bsc_nat.c | 14 | ||||
| -rw-r--r-- | openbsc/src/nat/bsc_nat_utils.c | 9 |
3 files changed, 22 insertions, 3 deletions
diff --git a/openbsc/include/openbsc/bsc_nat.h b/openbsc/include/openbsc/bsc_nat.h index 0c9af9184..6b2a09940 100644 --- a/openbsc/include/openbsc/bsc_nat.h +++ b/openbsc/include/openbsc/bsc_nat.h @@ -243,6 +243,8 @@ struct bsc_connection *bsc_nat_find_bsc(struct bsc_nat *nat, struct msgb *msg, i */ int bsc_nat_filter_sccp_cr(struct bsc_connection *bsc, struct msgb *msg, struct bsc_nat_parsed *, int *con_type); +int bsc_nat_filter_dt(struct bsc_connection *bsc, struct msgb *msg, + struct sccp_connections *con, struct bsc_nat_parsed *parsed); /** * SCCP patching and handling diff --git a/openbsc/src/nat/bsc_nat.c b/openbsc/src/nat/bsc_nat.c index 31009bb30..c7d97aa45 100644 --- a/openbsc/src/nat/bsc_nat.c +++ b/openbsc/src/nat/bsc_nat.c @@ -731,9 +731,17 @@ static int forward_sccp_to_msc(struct bsc_connection *bsc, struct msgb *msg) case SCCP_MSG_TYPE_IT: con = patch_sccp_src_ref_to_msc(msg, parsed, bsc); if (con) { - con_bsc = con->bsc; - con_msc = con->msc_con; - con_filter = con->con_local; + filter = bsc_nat_filter_dt(bsc, msg, con, parsed); + if (filter == 0) { + con_bsc = con->bsc; + con_msc = con->msc_con; + con_filter = con->con_local; + } else { + LOGP(DNAT, LOGL_ERROR, "Should drop the connection.\n"); + con_bsc = con->bsc; + con_msc = con->msc_con; + con_filter = con->con_local; + } } break; case SCCP_MSG_TYPE_RLC: diff --git a/openbsc/src/nat/bsc_nat_utils.c b/openbsc/src/nat/bsc_nat_utils.c index e81a1e85b..7387b517a 100644 --- a/openbsc/src/nat/bsc_nat_utils.c +++ b/openbsc/src/nat/bsc_nat_utils.c @@ -431,6 +431,15 @@ int bsc_nat_filter_sccp_cr(struct bsc_connection *bsc, struct msgb *msg, struct } } +int bsc_nat_filter_dt(struct bsc_connection *bsc, struct msgb *msg, + struct sccp_connections *con, struct bsc_nat_parsed *parsed) +{ + if (con->imsi_checked) + return 0; + + return 0; +} + void bsc_parse_reg(void *ctx, regex_t *reg, char **imsi, int argc, const char **argv) { if (*imsi) { |