[MME] [AMF] Set Daylight Saving Time (open5gs#2766)

Fix DST always being set to 0 ("No adjustment for Daylight Saving Time"). Related: 3GPP TS 24.008 § 10.5.3.12
pespin · Dec 6, 2023 · 66c39f2 · 66c39f2
1 parent 177e561
commit 66c39f2
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diff --git a/src/amf/gmm-build.c b/src/amf/gmm-build.c
@@ -596,6 +596,9 @@ ogs_pkbuf_t *gmm_build_configuration_update_command(
             configuration_update_command->presencemask |=
                 OGS_NAS_5GS_CONFIGURATION_UPDATE_COMMAND_NETWORK_DAYLIGHT_SAVING_TIME_PRESENT;
             network_daylight_saving_time->length = 1;
+            if (local.tm_isdst > 0) {
+                network_daylight_saving_time->value = 1;
+            }
         }
     }
 

diff --git a/src/mme/emm-handler.c b/src/mme/emm-handler.c
@@ -347,6 +347,9 @@ int emm_handle_attach_complete(
         emm_information->presencemask |=
             OGS_NAS_EPS_EMM_INFORMATION_NETWORK_DAYLIGHT_SAVING_TIME_PRESENT;
         network_daylight_saving_time->length = 1;
+        if (local.tm_isdst > 0) {
+            network_daylight_saving_time->value = 1;
+        }
     }
 
     emmbuf = nas_eps_security_encode(mme_ue, &message);