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diff --git a/test/testdate.c b/test/testdate.c
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+/* Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "abts.h"
+#include "testutil.h"
+#include "apr_date.h"
+#include "apr_general.h"
+
+#if APR_HAVE_TIME_H
+#include <time.h>
+#endif /* APR_HAVE_TIME_H */
+
+static struct datetest {
+ const char *input;
+ const char *output;
+} tests[] = {
+ { "Mon, 27 Feb 1995 20:49:44 -0800", "Tue, 28 Feb 1995 04:49:44 GMT" },
+ { "Fri, 1 Jul 2005 11:34:25 -0400", "Fri, 01 Jul 2005 15:34:25 GMT" },
+ { "Monday, 27-Feb-95 20:49:44 -0800", "Tue, 28 Feb 1995 04:49:44 GMT" },
+ { "Tue, 4 Mar 1997 12:43:52 +0200", "Tue, 04 Mar 1997 10:43:52 GMT" },
+ { "Mon, 27 Feb 95 20:49:44 -0800", "Tue, 28 Feb 1995 04:49:44 GMT" },
+ { "Tue, 4 Mar 97 12:43:52 +0200", "Tue, 04 Mar 1997 10:43:52 GMT" },
+ { "Tue, 4 Mar 97 12:43:52 +0200", "Tue, 04 Mar 1997 10:43:52 GMT" },
+ { "Mon, 27 Feb 95 20:49 GMT", "Mon, 27 Feb 1995 20:49:00 GMT" },
+ { "Tue, 4 Mar 97 12:43 GMT", "Tue, 04 Mar 1997 12:43:00 GMT" },
+ { NULL, NULL }
+};
+
+static const apr_time_t year2secs[] = {
+ APR_INT64_C(0), /* 1970 */
+ APR_INT64_C(31536000), /* 1971 */
+ APR_INT64_C(63072000), /* 1972 */
+ APR_INT64_C(94694400), /* 1973 */
+ APR_INT64_C(126230400), /* 1974 */
+ APR_INT64_C(157766400), /* 1975 */
+ APR_INT64_C(189302400), /* 1976 */
+ APR_INT64_C(220924800), /* 1977 */
+ APR_INT64_C(252460800), /* 1978 */
+ APR_INT64_C(283996800), /* 1979 */
+ APR_INT64_C(315532800), /* 1980 */
+ APR_INT64_C(347155200), /* 1981 */
+ APR_INT64_C(378691200), /* 1982 */
+ APR_INT64_C(410227200), /* 1983 */
+ APR_INT64_C(441763200), /* 1984 */
+ APR_INT64_C(473385600), /* 1985 */
+ APR_INT64_C(504921600), /* 1986 */
+ APR_INT64_C(536457600), /* 1987 */
+ APR_INT64_C(567993600), /* 1988 */
+ APR_INT64_C(599616000), /* 1989 */
+ APR_INT64_C(631152000), /* 1990 */
+ APR_INT64_C(662688000), /* 1991 */
+ APR_INT64_C(694224000), /* 1992 */
+ APR_INT64_C(725846400), /* 1993 */
+ APR_INT64_C(757382400), /* 1994 */
+ APR_INT64_C(788918400), /* 1995 */
+ APR_INT64_C(820454400), /* 1996 */
+ APR_INT64_C(852076800), /* 1997 */
+ APR_INT64_C(883612800), /* 1998 */
+ APR_INT64_C(915148800), /* 1999 */
+ APR_INT64_C(946684800), /* 2000 */
+ APR_INT64_C(978307200), /* 2001 */
+ APR_INT64_C(1009843200), /* 2002 */
+ APR_INT64_C(1041379200), /* 2003 */
+ APR_INT64_C(1072915200), /* 2004 */
+ APR_INT64_C(1104537600), /* 2005 */
+ APR_INT64_C(1136073600), /* 2006 */
+ APR_INT64_C(1167609600), /* 2007 */
+ APR_INT64_C(1199145600), /* 2008 */
+ APR_INT64_C(1230768000), /* 2009 */
+ APR_INT64_C(1262304000), /* 2010 */
+ APR_INT64_C(1293840000), /* 2011 */
+ APR_INT64_C(1325376000), /* 2012 */
+ APR_INT64_C(1356998400), /* 2013 */
+ APR_INT64_C(1388534400), /* 2014 */
+ APR_INT64_C(1420070400), /* 2015 */
+ APR_INT64_C(1451606400), /* 2016 */
+ APR_INT64_C(1483228800), /* 2017 */
+ APR_INT64_C(1514764800), /* 2018 */
+ APR_INT64_C(1546300800), /* 2019 */
+ APR_INT64_C(1577836800), /* 2020 */
+ APR_INT64_C(1609459200), /* 2021 */
+ APR_INT64_C(1640995200), /* 2022 */
+ APR_INT64_C(1672531200), /* 2023 */
+ APR_INT64_C(1704067200), /* 2024 */
+ APR_INT64_C(1735689600), /* 2025 */
+ APR_INT64_C(1767225600), /* 2026 */
+ APR_INT64_C(1798761600), /* 2027 */
+ APR_INT64_C(1830297600), /* 2028 */
+ APR_INT64_C(1861920000), /* 2029 */
+ APR_INT64_C(1893456000), /* 2030 */
+ APR_INT64_C(1924992000), /* 2031 */
+ APR_INT64_C(1956528000), /* 2032 */
+ APR_INT64_C(1988150400), /* 2033 */
+ APR_INT64_C(2019686400), /* 2034 */
+ APR_INT64_C(2051222400), /* 2035 */
+ APR_INT64_C(2082758400), /* 2036 */
+ APR_INT64_C(2114380800), /* 2037 */
+ APR_INT64_C(2145916800) /* 2038 */
+};
+
+const char month_snames[12][4] = {
+ "Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"
+};
+
+/* XXX: non-portable */
+static void gm_timestr_822(char *ts, apr_time_t sec)
+{
+ static const char *const days[7]=
+ {"Sun","Mon", "Tue", "Wed", "Thu", "Fri", "Sat"};
+ struct tm *tms;
+ time_t ls = (time_t)sec;
+
+ tms = gmtime(&ls);
+
+ sprintf(ts, "%s, %.2d %s %d %.2d:%.2d:%.2d GMT", days[tms->tm_wday],
+ tms->tm_mday, month_snames[tms->tm_mon], tms->tm_year + 1900,
+ tms->tm_hour, tms->tm_min, tms->tm_sec);
+}
+
+/* Linear congruential generator */
+static apr_uint32_t lgc(apr_uint32_t a)
+{
+ apr_uint64_t z = a;
+ z *= 279470273;
+ z %= APR_UINT64_C(4294967291);
+ return (apr_uint32_t)z;
+}
+
+static void test_date_parse_http(abts_case *tc, void *data)
+{
+ int year, i;
+ apr_time_t guess;
+ apr_time_t offset = 0;
+ apr_time_t secstodate, newsecs;
+ char datestr[50];
+
+ for (year = 1970; year < 2038; ++year) {
+ secstodate = year2secs[year - 1970] + offset;
+ gm_timestr_822(datestr, secstodate);
+ secstodate *= APR_USEC_PER_SEC;
+ newsecs = apr_date_parse_http(datestr);
+ ABTS_TRUE(tc, secstodate == newsecs);
+ }
+
+#if APR_HAS_RANDOM
+ apr_generate_random_bytes((unsigned char *)&guess, sizeof(guess));
+#else
+ guess = apr_time_now() % APR_TIME_C(4294967291);
+#endif
+
+ for (i = 0; i < 10000; ++i) {
+ guess = (time_t)lgc((apr_uint32_t)guess);
+ if (guess < 0)
+ guess *= -1;
+ secstodate = guess + offset;
+ gm_timestr_822(datestr, secstodate);
+ secstodate *= APR_USEC_PER_SEC;
+ newsecs = apr_date_parse_http(datestr);
+ ABTS_TRUE(tc, secstodate == newsecs);
+ }
+}
+
+static void test_date_rfc(abts_case *tc, void *data)
+{
+ apr_time_t date;
+ int i = 0;
+
+ while (tests[i].input) {
+ char str_date[APR_RFC822_DATE_LEN] = { 0 };
+
+ date = apr_date_parse_rfc(tests[i].input);
+
+ apr_rfc822_date(str_date, date);
+
+ ABTS_STR_EQUAL(tc, str_date, tests[i].output);
+
+ i++;
+ }
+}
+
+abts_suite *testdate(abts_suite *suite)
+{
+ suite = ADD_SUITE(suite);
+
+ abts_run_test(suite, test_date_parse_http, NULL);
+ abts_run_test(suite, test_date_rfc, NULL);
+
+ return suite;
+}
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