Check OPENSSL_gmtime_diff

It's test code that only runs on 64bit time_t machines.
Move it to a standalone test/gmdifftest

Reviewed-by: Richard Levitte <levitte@openssl.org>

1 files changed, 126 insertions, 0 deletions

diff --git a/test/gmdifftest.c b/test/gmdifftest.c
new file mode 100644
index 0000000000..57c6a3d394
--- /dev/null
+++ b/test/gmdifftest.c
@@ -0,0 +1,126 @@
+/* ====================================================================
+ * Copyright (c) 2001-2015 The OpenSSL Project.  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.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED 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 OpenSSL PROJECT OR
+ * ITS 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.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+
+#include <openssl/crypto.h>
+#include <stdio.h>
+
+#define SECS_PER_DAY (24 * 60 * 60)
+
+/*
+ * Time checking test code. Check times are identical for a wide range of
+ * offsets. This should be run on a machine with 64 bit time_t or it will
+ * trigger the very errors the routines fix.
+ */
+
+static int check_time(long offset)
+{
+    struct tm tm1, tm2, o1;
+    int off_day, off_sec;
+    long toffset;
+    time_t t1, t2;
+    time(&t1);
+
+    t2 = t1 + offset;
+    OPENSSL_gmtime(&t2, &tm2);
+    OPENSSL_gmtime(&t1, &tm1);
+    o1 = tm1;
+    OPENSSL_gmtime_adj(&tm1, 0, offset);
+    if ((tm1.tm_year != tm2.tm_year) ||
+        (tm1.tm_mon != tm2.tm_mon) ||
+        (tm1.tm_mday != tm2.tm_mday) ||
+        (tm1.tm_hour != tm2.tm_hour) ||
+        (tm1.tm_min != tm2.tm_min) || (tm1.tm_sec != tm2.tm_sec)) {
+        fprintf(stderr, "TIME ERROR!!\n");
+        fprintf(stderr, "Time1: %d/%d/%d, %d:%02d:%02d\n",
+                tm2.tm_mday, tm2.tm_mon + 1, tm2.tm_year + 1900,
+                tm2.tm_hour, tm2.tm_min, tm2.tm_sec);
+        fprintf(stderr, "Time2: %d/%d/%d, %d:%02d:%02d\n",
+                tm1.tm_mday, tm1.tm_mon + 1, tm1.tm_year + 1900,
+                tm1.tm_hour, tm1.tm_min, tm1.tm_sec);
+        return 0;
+    }
+    if (!OPENSSL_gmtime_diff(&off_day, &off_sec, &o1, &tm1))
+        return 0;
+    toffset = (long)off_day *SECS_PER_DAY + off_sec;
+    if (offset != toffset) {
+        fprintf(stderr, "TIME OFFSET ERROR!!\n");
+        fprintf(stderr, "Expected %ld, Got %ld (%d:%d)\n",
+                offset, toffset, off_day, off_sec);
+        return 0;
+    }
+    return 1;
+}
+
+int main(int argc, char **argv)
+{
+    long offset;
+    int fails;
+
+    if (sizeof(time_t) < 8) {
+        fprintf(stderr, "Skipping; time_t is less than 64-bits\n");
+        return 0;
+    }
+    for (fails = 0, offset = 0; offset < 1000000; offset++) {
+        if (!check_time(offset))
+            fails++;
+        if (!check_time(-offset))
+            fails++;
+        if (!check_time(offset * 1000))
+            fails++;
+        if (!check_time(-offset * 1000))
+            fails++;
+    }
+
+    return fails ? 1 : 0;
+}