diff options
Diffstat (limited to 'src/libvlr/vlr.c')
| -rw-r--r-- | src/libvlr/vlr.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/src/libvlr/vlr.c b/src/libvlr/vlr.c index 16f365eba..55b8de006 100644 --- a/src/libvlr/vlr.c +++ b/src/libvlr/vlr.c @@ -1122,6 +1122,23 @@ int vlr_set_ciph_mode(struct vlr_instance *vlr, } } +/* Decide whether UMTS AKA should be used. + * UTRAN networks are by definition R99 capable, and the auth vector is required to contain UMTS AKA + * tokens. This is expected to be verified by the caller. On GERAN, UMTS AKA must be used iff MS and + * GERAN are R99 capable and UMTS AKA tokens are available. + * \param[in] vec Auth tokens (received from the HLR). + * \param[in] is_r99 True when BTS and GERAN are R99 capable. + * \returns true to use UMTS AKA, false to use pre-R99 GSM AKA. + */ +bool vlr_use_umts_aka(struct osmo_auth_vector *vec, bool is_r99) +{ + if (!is_r99) + return false; + if (!(vec->auth_types & OSMO_AUTH_TYPE_UMTS)) + return false; + return true; +} + void log_set_filter_vlr_subscr(struct log_target *target, struct vlr_subscr *vlr_subscr) { |