2 files changed, 20 insertions, 1 deletions
diff --git a/main/src/cgeo/geocaching/LogCacheActivity.java b/main/src/cgeo/geocaching/LogCacheActivity.java
index 1d31e27..c60d2e4 100644
--- a/main/src/cgeo/geocaching/LogCacheActivity.java
+++ b/main/src/cgeo/geocaching/LogCacheActivity.java
@@ -618,6 +618,10 @@ public class LogCacheActivity extends AbstractLoggingActivity implements DateDia
             Dialogs.message(this, R.string.log_post_not_possible);
             return;
         }
+        if (DateUtils.isFuture(date)) {
+            Dialogs.message(this, R.string.log_date_future_not_allowed);
+            return;
+        }
         if (typeSelected.mustConfirmLog()) {
             Dialogs.confirm(this, R.string.confirm_log_title, res.getString(R.string.confirm_log_message, typeSelected.getL10n()), new OnClickListener() {
 
diff --git a/main/src/cgeo/geocaching/utils/DateUtils.java b/main/src/cgeo/geocaching/utils/DateUtils.java
index 9aa4222..8278be7 100644
--- a/main/src/cgeo/geocaching/utils/DateUtils.java
+++ b/main/src/cgeo/geocaching/utils/DateUtils.java
@@ -11,7 +11,7 @@ public final class DateUtils {
         // utility class
     }
 
-    public static int daysSince(long date) {
+    public static int daysSince(final long date) {
         final Calendar logDate = Calendar.getInstance();
         logDate.setTimeInMillis(date);
         logDate.set(Calendar.SECOND, 0);
@@ -24,6 +24,10 @@ public final class DateUtils {
         return (int) Math.round((today.getTimeInMillis() - logDate.getTimeInMillis()) / 86400000d);
     }
 
+    public static int daysSince(final Calendar date) {
+        return daysSince(date.getTimeInMillis());
+    }
+
     public static boolean isPastEvent(final Geocache cache) {
         if (!cache.isEventCache()) {
             return false;
@@ -32,4 +36,15 @@ public final class DateUtils {
         return hiddenDate != null && DateUtils.daysSince(hiddenDate.getTime()) > 0;
     }
 
+    /**
+     * Return whether the given date is *more* than 1 day away. We allow 1 day to be "present time" to compensate for
+     * potential timezone issues.
+     * 
+     * @param date
+     * @return
+     */
+    public static boolean isFuture(final Calendar date) {
+        return daysSince(date) < -1;
+    }
+
 }