[evolution-data-server] evo-I#831 - Free/Busy times are not in UTC

[Milan Crha <mcrha src gnome org>]

commit bf787b7c1e134b855f7c2f1d35ca8ecd5a66473e
Author: Milan Crha <mcrha redhat com>
Date:   Thu Mar 12 09:59:22 2020 +0100

    evo-I#831 - Free/Busy times are not in UTC
    
    Closes https://gitlab.gnome.org/GNOME/evolution/issues/831

 src/calendar/backends/file/e-cal-backend-file.c |  6 ++++++
 src/calendar/libedata-cal/e-cal-meta-backend.c  | 10 ++++++++--
 2 files changed, 14 insertions(+), 2 deletions(-)
---
diff --git a/src/calendar/backends/file/e-cal-backend-file.c b/src/calendar/backends/file/e-cal-backend-file.c
index 3ce7b80e5..78e96c677 100644
--- a/src/calendar/backends/file/e-cal-backend-file.c
+++ b/src/calendar/backends/file/e-cal-backend-file.c
@@ -2051,6 +2051,12 @@ free_busy_instance (ICalComponent *icomp,
        ICalPeriod *ipt;
        const gchar *summary, *location;
 
+       if (!i_cal_time_is_date (instance_start))
+               i_cal_time_convert_to_zone_inplace (instance_start, i_cal_timezone_get_utc_timezone ());
+
+       if (!i_cal_time_is_date (instance_end))
+               i_cal_time_convert_to_zone_inplace (instance_end, i_cal_timezone_get_utc_timezone ());
+
        ipt = i_cal_period_new_null_period ();
        i_cal_period_set_start (ipt, instance_start);
        i_cal_period_set_end (ipt, instance_end);
diff --git a/src/calendar/libedata-cal/e-cal-meta-backend.c b/src/calendar/libedata-cal/e-cal-meta-backend.c
index 93f4806ba..ea39eb547 100644
--- a/src/calendar/libedata-cal/e-cal-meta-backend.c
+++ b/src/calendar/libedata-cal/e-cal-meta-backend.c
@@ -1422,6 +1422,12 @@ ecmb_add_free_busy_instance_cb (ICalComponent *icomp,
        ICalParameter *param;
        ICalPeriod *ipt;
 
+       if (!i_cal_time_is_date (instance_start))
+               i_cal_time_convert_to_zone_inplace (instance_start, i_cal_timezone_get_utc_timezone ());
+
+       if (!i_cal_time_is_date (instance_end))
+               i_cal_time_convert_to_zone_inplace (instance_end, i_cal_timezone_get_utc_timezone ());
+
        ipt = i_cal_period_new_null_period ();
        i_cal_period_set_start (ipt, instance_start);
        i_cal_period_set_end (ipt, instance_end);
@@ -1563,8 +1569,8 @@ ecmb_get_free_busy_sync (ECalBackendSync *sync_backend,
                                continue;
                }
 
-               starttt = i_cal_time_new_from_timet_with_zone (start, FALSE, NULL);
-               endtt = i_cal_time_new_from_timet_with_zone (end, FALSE, NULL);
+               starttt = i_cal_time_new_from_timet_with_zone (start, FALSE, utc_zone);
+               endtt = i_cal_time_new_from_timet_with_zone (end, FALSE, utc_zone);
 
                success = e_cal_recur_generate_instances_sync (icomp, starttt, endtt,
                        ecmb_add_free_busy_instance_cb, vfreebusy,