sms: Proper decoding and storage of SMS validity period.
- Use time_t instead of abstract minutes to store validity time to make sure we support all possible values.
- Return UNIX time from it to support both relative and absolute expire times.
- Pass a current time to gsm340_validity_period() to compute the absolute expire time if a relative time is specified. What time is "current" is to be decided by callers.
- We also introduce SMS_DEFAULT_VALIDITY_PERIOD macros to reduce number of magic values.
diff --git a/src/gsm/libosmogsm.map b/src/gsm/libosmogsm.map
index 9d15d66..c337def 100644
--- a/src/gsm/libosmogsm.map
+++ b/src/gsm/libosmogsm.map
@@ -66,6 +66,7 @@
gsm340_gen_scts;
gsm340_scts;
gsm340_validity_period;
+gsm340_validity_time;
gsm411_bcdify;
gsm411_msgb_alloc;