diff options
Diffstat (limited to 'tests/sgsn/gprs_gb_parse.c')
| -rw-r--r-- | tests/sgsn/gprs_gb_parse.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/tests/sgsn/gprs_gb_parse.c b/tests/sgsn/gprs_gb_parse.c index 670839f73..3eec58c22 100644 --- a/tests/sgsn/gprs_gb_parse.c +++ b/tests/sgsn/gprs_gb_parse.c @@ -24,6 +24,7 @@ #include <osmocom/gsm/protocol/gsm_04_08_gprs.h> #include "gprs_gb_parse.h" +#include "gprs_llc_parse.h" #include <osmocom/sgsn/gprs_utils.h> @@ -31,6 +32,39 @@ #include <osmocom/gprs/gprs_bssgp.h> +/* GSM 04.08, 10.5.1.4 */ +static int gprs_is_mi_tmsi(const uint8_t *value, size_t value_len) +{ + if (value_len != GSM48_TMSI_LEN) + return 0; + + if (!value || (value[0] & GSM_MI_TYPE_MASK) != GSM_MI_TYPE_TMSI) + return 0; + + return 1; +} + +/* GSM 04.08, 10.5.1.4 */ +static int gprs_is_mi_imsi(const uint8_t *value, size_t value_len) +{ + if (value_len == 0) + return 0; + + if (!value || (value[0] & GSM_MI_TYPE_MASK) != GSM_MI_TYPE_IMSI) + return 0; + + return 1; +} + +static void gprs_parse_tmsi(const uint8_t *value, uint32_t *tmsi) +{ + uint32_t tmsi_be; + + memcpy(&tmsi_be, value, sizeof(tmsi_be)); + + *tmsi = ntohl(tmsi_be); +} + static int gprs_gb_parse_gmm_attach_req(uint8_t *data, size_t data_len, struct gprs_gb_parse_context *parse_ctx) { |