1 files changed, 96 insertions, 0 deletions
diff --git a/src/common/time-utils.cpp b/src/common/time-utils.cpp
new file mode 100644
index 0000000..83d934a
--- /dev/null
+++ b/src/common/time-utils.cpp
@@ -0,0 +1,96 @@
+/*
+ * Copyright (c) 2021 [Ribose Inc](https://www.ribose.com).
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ * 1.  Redistributions of source code must retain the above copyright notice,
+ *     this list of conditions and the following disclaimer.
+ *
+ * 2.  Redistributions in binary form must reproduce the above copyright notice,
+ *     this list of conditions and the following disclaimer in the documentation
+ *     and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+/** Time utilities
+ *  @file
+ */
+
+#include <stdint.h>
+#include "time-utils.h"
+
+static inline time_t
+adjust_time32(time_t t)
+{
+    return (sizeof(t) == 4 && t < 0) ? INT32_MAX : t;
+}
+
+bool
+rnp_y2k38_warning(time_t t)
+{
+    return (sizeof(t) == 4 && (t < 0 || t == INT32_MAX));
+}
+
+time_t
+rnp_mktime(struct tm *tm)
+{
+    return adjust_time32(mktime(tm));
+}
+
+void
+rnp_gmtime(time_t t, struct tm &tm)
+{
+    time_t adjusted = adjust_time32(t);
+#ifndef _WIN32
+    gmtime_r(&adjusted, &tm);
+#else
+    (void) gmtime_s(&tm, &adjusted);
+#endif
+}
+
+void
+rnp_localtime(time_t t, struct tm &tm)
+{
+    time_t adjusted = adjust_time32(t);
+#ifndef _WIN32
+    localtime_r(&adjusted, &tm);
+#else
+    (void) localtime_s(&tm, &adjusted);
+#endif
+}
+
+std::string
+rnp_ctime(time_t t)
+{
+    char   time_buf[26];
+    time_t adjusted = adjust_time32(t);
+#ifndef _WIN32
+    (void) ctime_r(&adjusted, time_buf);
+#else
+    (void) ctime_s(time_buf, sizeof(time_buf), &adjusted);
+#endif
+    return std::string(time_buf);
+}
+
+time_t
+rnp_timeadd(time_t t1, time_t t2)
+{
+    if (sizeof(time_t) == 4) {
+        if (t1 < 0 || t2 < 0) {
+            return INT32_MAX;
+        }
+        return adjust_time32(t1 + t2);
+    }
+    return t1 + t2;
+}