diff options
| author | Alexander Chemeris <Alexander.Chemeris@gmail.com> | 2020-05-12 23:21:56 +0300 |
|---|---|---|
| committer | Alexander Chemeris <Alexander.Chemeris@gmail.com> | 2020-05-13 00:46:00 +0300 |
| commit | fdfe25b1056c51bdd8710de37b6d9aa3df950522 (patch) | |
| tree | 3ee7ad50dafbc87db040754850655b073001caff /src/gsm/gsm0808.c | |
| parent | 3c0a87ca4b25da5fdf9229418ab6fecd9c12cbcd (diff) | |
gsm0808: Make a function to extract Cause IE publicly available.
Function gsm0808_get_cipher_reject_cause() was previously available
in private gsm0808_utils.h. In practice, the exact same code is useful
to extract Cause IE value from any of the many other BSSMAP messages
which use it.
So let's rename it to gsm0808_get_cause() and make it avilable
to everyone to use.
Change-Id: Idf2b99e9ef014eba26e3d4f0f38c2714d3a0520a
Diffstat (limited to 'src/gsm/gsm0808.c')
| -rw-r--r-- | src/gsm/gsm0808.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/src/gsm/gsm0808.c b/src/gsm/gsm0808.c index 02288e6c..788f6c3c 100644 --- a/src/gsm/gsm0808.c +++ b/src/gsm/gsm0808.c @@ -1654,6 +1654,22 @@ const char *gsm0808_cause_name(enum gsm0808_cause cause) return get_value_string(gsm0808_cause_names, cause); } +enum gsm0808_cause gsm0808_get_cause(const struct tlv_parsed *tp) +{ + const uint8_t *buf = TLVP_VAL_MINLEN(tp, GSM0808_IE_CAUSE, 1); + + if (!buf) + return -EBADMSG; + + if (TLVP_LEN(tp, GSM0808_IE_CAUSE) > 1) { + if (!gsm0808_cause_ext(buf[0])) + return -EINVAL; + return buf[1]; + } + + return buf[0]; +} + const struct value_string gsm0808_lcls_config_names[] = { { GSM0808_LCLS_CFG_BOTH_WAY, "Connect both-way" }, { GSM0808_LCLS_CFG_BOTH_WAY_AND_BICAST_UL, |