test/asn1_time_test.c

   1 /*
   2  * Copyright 1999-2022 The OpenSSL Project Authors. All Rights Reserved.
   3  *
   4  * Licensed under the Apache License 2.0 (the "License").  You may not use
   5  * this file except in compliance with the License.  You can obtain a copy
   6  * in the file LICENSE in the source distribution or at
   7  * https://www.openssl.org/source/license.html
   8  */
   9
  10 /* Time tests for the asn1 module */
  11
  12 #include <limits.h>
  13 #include <stdio.h>
  14 #include <string.h>
  15
  16 #include <crypto/asn1.h>
  17 #include <openssl/asn1.h>
  18 #include <openssl/evp.h>
  19 #include <openssl/objects.h>
  20 #include "testutil.h"
  21 #include "internal/nelem.h"
  22
  23 struct testdata {
  24     char *data;             /* TIME string value */
  25     int type;               /* GENERALIZED OR UTC */
  26     int expected_type;      /* expected type after set/set_string_gmt */
  27     int check_result;       /* check result */
  28     time_t t;               /* expected time_t*/
  29     int cmp_result;         /* comparison to baseline result */
  30     int convert_result;     /* conversion result */
  31 };
  32
  33 struct TESTDATA_asn1_to_utc {
  34     char *input;
  35     time_t expected;
  36 };
  37
  38 static const struct TESTDATA_asn1_to_utc asn1_to_utc[] = {
  39     {
  40         /*
  41          * last second of standard time in central Europe in 2021
  42          * specified in GMT
  43          */
  44         "210328005959Z",
  45         1616893199,
  46     },
  47     {
  48         /*
  49          * first second of daylight saving time in central Europe in 2021
  50          * specified in GMT
  51          */
  52         "210328010000Z",
  53         1616893200,
  54     },
  55     {
  56         /*
  57          * last second of standard time in central Europe in 2021
  58          * specified in offset to GMT
  59          */
  60         "20210328015959+0100",
  61         1616893199,
  62     },
  63     {
  64         /*
  65          * first second of daylight saving time in central Europe in 2021
  66          * specified in offset to GMT
  67          */
  68         "20210328030000+0200",
  69         1616893200,
  70     },
  71     {
  72         /*
  73          * Invalid strings should get -1 as a result
  74          */
  75         "INVALID",
  76         -1,
  77     },
  78 };
  79
  80 static struct testdata tbl_testdata_pos[] = {
  81     { "0",                 V_ASN1_GENERALIZEDTIME, V_ASN1_GENERALIZEDTIME, 0,           0,  0, 0, }, /* Bad time */
  82     { "ABCD",              V_ASN1_GENERALIZEDTIME, V_ASN1_GENERALIZEDTIME, 0,           0,  0, 0, },
  83     { "0ABCD",             V_ASN1_GENERALIZEDTIME, V_ASN1_GENERALIZEDTIME, 0,           0,  0, 0, },
  84     { "1-700101000000Z",   V_ASN1_GENERALIZEDTIME, V_ASN1_GENERALIZEDTIME, 0,           0,  0, 0, },
  85     { "`9700101000000Z",   V_ASN1_GENERALIZEDTIME, V_ASN1_GENERALIZEDTIME, 0,           0,  0, 0, },
  86     { "19700101000000Z",   V_ASN1_UTCTIME,         V_ASN1_UTCTIME,         0,           0,  0, 0, },
  87     { "A00101000000Z",     V_ASN1_UTCTIME,         V_ASN1_UTCTIME,         0,           0,  0, 0, },
  88     { "A9700101000000Z",   V_ASN1_GENERALIZEDTIME, V_ASN1_GENERALIZEDTIME, 0,           0,  0, 0, },
  89     { "1A700101000000Z",   V_ASN1_GENERALIZEDTIME, V_ASN1_GENERALIZEDTIME, 0,           0,  0, 0, },
  90     { "19A00101000000Z",   V_ASN1_GENERALIZEDTIME, V_ASN1_GENERALIZEDTIME, 0,           0,  0, 0, },
  91     { "197A0101000000Z",   V_ASN1_GENERALIZEDTIME, V_ASN1_GENERALIZEDTIME, 0,           0,  0, 0, },
  92     { "1970A101000000Z",   V_ASN1_GENERALIZEDTIME, V_ASN1_GENERALIZEDTIME, 0,           0,  0, 0, },
  93     { "19700A01000000Z",   V_ASN1_GENERALIZEDTIME, V_ASN1_GENERALIZEDTIME, 0,           0,  0, 0, },
  94     { "197001A1000000Z",   V_ASN1_GENERALIZEDTIME, V_ASN1_GENERALIZEDTIME, 0,           0,  0, 0, },
  95     { "1970010A000000Z",   V_ASN1_GENERALIZEDTIME, V_ASN1_GENERALIZEDTIME, 0,           0,  0, 0, },
  96     { "19700101A00000Z",   V_ASN1_GENERALIZEDTIME, V_ASN1_GENERALIZEDTIME, 0,           0,  0, 0, },
  97     { "197001010A0000Z",   V_ASN1_GENERALIZEDTIME, V_ASN1_GENERALIZEDTIME, 0,           0,  0, 0, },
  98     { "1970010100A000Z",   V_ASN1_GENERALIZEDTIME, V_ASN1_GENERALIZEDTIME, 0,           0,  0, 0, },
  99     { "19700101000A00Z",   V_ASN1_GENERALIZEDTIME, V_ASN1_GENERALIZEDTIME, 0,           0,  0, 0, },
 100     { "197001010000A0Z",   V_ASN1_GENERALIZEDTIME, V_ASN1_GENERALIZEDTIME, 0,           0,  0, 0, },
 101     { "1970010100000AZ",   V_ASN1_GENERALIZEDTIME, V_ASN1_GENERALIZEDTIME, 0,           0,  0, 0, },
 102     { "700101000000X",     V_ASN1_UTCTIME,         V_ASN1_UTCTIME,         0,           0,  0, 0, },
 103     { "19700101000000X",   V_ASN1_GENERALIZEDTIME, V_ASN1_GENERALIZEDTIME, 0,           0,  0, 0, },
 104     { "19700101000000Z",   V_ASN1_GENERALIZEDTIME, V_ASN1_UTCTIME,         1,           0, -1, 1, }, /* Epoch begins */
 105     { "700101000000Z",     V_ASN1_UTCTIME,         V_ASN1_UTCTIME,         1,           0, -1, 1, }, /* ditto */
 106     { "20380119031407Z",   V_ASN1_GENERALIZEDTIME, V_ASN1_UTCTIME,         1,  0x7FFFFFFF,  1, 1, }, /* Max 32bit time_t */
 107     { "380119031407Z",     V_ASN1_UTCTIME,         V_ASN1_UTCTIME,         1,  0x7FFFFFFF,  1, 1, },
 108     { "20371231235959Z",   V_ASN1_GENERALIZEDTIME, V_ASN1_UTCTIME,         1,  2145916799,  1, 1, }, /* Just before 2038 */
 109     { "20371231235959Z",   V_ASN1_UTCTIME,         V_ASN1_UTCTIME,         0,           0,  0, 1, }, /* Bad UTC time */
 110     { "371231235959Z",     V_ASN1_UTCTIME,         V_ASN1_UTCTIME,         1,  2145916799,  1, 1, },
 111     { "19701006121456Z",   V_ASN1_GENERALIZEDTIME, V_ASN1_UTCTIME,         1,    24063296, -1, 1, },
 112     { "701006121456Z",     V_ASN1_UTCTIME,         V_ASN1_UTCTIME,         1,    24063296, -1, 1, },
 113     { "19991231000000Z",   V_ASN1_GENERALIZEDTIME, V_ASN1_UTCTIME,         1,   946598400,  0, 1, }, /* Match baseline */
 114     { "199912310000Z",     V_ASN1_GENERALIZEDTIME, V_ASN1_UTCTIME,         1,   946598400,  0, 1, }, /* In various flavors */
 115     { "991231000000Z",     V_ASN1_UTCTIME,         V_ASN1_UTCTIME,         1,   946598400,  0, 1, },
 116     { "9912310000Z",       V_ASN1_UTCTIME,         V_ASN1_UTCTIME,         1,   946598400,  0, 1, },
 117     { "9912310000+0000",   V_ASN1_UTCTIME,         V_ASN1_UTCTIME,         1,   946598400,  0, 1, },
 118     { "199912310000+0000", V_ASN1_GENERALIZEDTIME, V_ASN1_UTCTIME,         1,   946598400,  0, 1, },
 119     { "9912310000-0000",   V_ASN1_UTCTIME,         V_ASN1_UTCTIME,         1,   946598400,  0, 1, },
 120     { "199912310000-0000", V_ASN1_GENERALIZEDTIME, V_ASN1_UTCTIME,         1,   946598400,  0, 1, },
 121     { "199912310100+0100", V_ASN1_GENERALIZEDTIME, V_ASN1_UTCTIME,         1,   946598400,  0, 1, },
 122     { "199912302300-0100", V_ASN1_GENERALIZEDTIME, V_ASN1_UTCTIME,         1,   946598400,  0, 1, },
 123     { "199912302300-A000", V_ASN1_GENERALIZEDTIME, V_ASN1_UTCTIME,         0,   946598400,  0, 1, },
 124     { "199912302300-0A00", V_ASN1_GENERALIZEDTIME, V_ASN1_UTCTIME,         0,   946598400,  0, 1, },
 125     { "9912310100+0100",   V_ASN1_UTCTIME,         V_ASN1_UTCTIME,         1,   946598400,  0, 1, },
 126     { "9912302300-0100",   V_ASN1_UTCTIME,         V_ASN1_UTCTIME,         1,   946598400,  0, 1, },
 127 };
 128
 129 /* ASSUMES SIGNED TIME_T */
 130 static struct testdata tbl_testdata_neg[] = {
 131     { "19011213204552Z",   V_ASN1_GENERALIZEDTIME, V_ASN1_GENERALIZEDTIME, 1,     INT_MIN, -1, 0, },
 132     { "691006121456Z",     V_ASN1_UTCTIME,         V_ASN1_UTCTIME,         1,    -7472704, -1, 1, },
 133     { "19691006121456Z",   V_ASN1_GENERALIZEDTIME, V_ASN1_UTCTIME,         1,    -7472704, -1, 1, },
 134 };
 135
 136 /* explicit casts to time_t short warnings on systems with 32-bit time_t */
 137 static struct testdata tbl_testdata_pos_64bit[] = {
 138     { "20380119031408Z",   V_ASN1_GENERALIZEDTIME, V_ASN1_UTCTIME,         1,  (time_t)0x80000000,  1, 1, },
 139     { "20380119031409Z",   V_ASN1_GENERALIZEDTIME, V_ASN1_UTCTIME,         1,  (time_t)0x80000001,  1, 1, },
 140     { "380119031408Z",     V_ASN1_UTCTIME,         V_ASN1_UTCTIME,         1,  (time_t)0x80000000,  1, 1, },
 141     { "20500101120000Z",   V_ASN1_GENERALIZEDTIME, V_ASN1_GENERALIZEDTIME, 1,  (time_t)0x967b1ec0,  1, 0, },
 142 };
 143
 144 /* ASSUMES SIGNED TIME_T */
 145 static struct testdata tbl_testdata_neg_64bit[] = {
 146     { "19011213204551Z",   V_ASN1_GENERALIZEDTIME, V_ASN1_GENERALIZEDTIME, 1, (time_t)-2147483649LL, -1, 0, },
 147     { "19000101120000Z",   V_ASN1_GENERALIZEDTIME, V_ASN1_GENERALIZEDTIME, 1, (time_t)-2208945600LL, -1, 0, },
 148 };
 149
 150 /* A baseline time to compare to */
 151 static ASN1_TIME gtime = {
 152     15,
 153     V_ASN1_GENERALIZEDTIME,
 154     (unsigned char*)"19991231000000Z",
 155     0
 156 };
 157 static time_t gtime_t = 946598400;
 158
 159 static int test_table(struct testdata *tbl, int idx)
 160 {
 161     int error = 0;
 162     ASN1_TIME atime;
 163     ASN1_TIME *ptime;
 164     struct testdata *td = &tbl[idx];
 165     int day, sec;
 166
 167     atime.data = (unsigned char*)td->data;
 168     atime.length = strlen((char*)atime.data);
 169     atime.type = td->type;
 170     atime.flags = 0;
 171
 172     if (!TEST_int_eq(ASN1_TIME_check(&atime), td->check_result)) {
 173         TEST_info("ASN1_TIME_check(%s) unexpected result", atime.data);
 174         error = 1;
 175     }
 176     if (td->check_result == 0)
 177         return 1;
 178
 179     if (!TEST_int_eq(ASN1_TIME_cmp_time_t(&atime, td->t), 0)) {
 180         TEST_info("ASN1_TIME_cmp_time_t(%s vs %ld) compare failed", atime.data, (long)td->t);
 181         error = 1;
 182     }
 183
 184     if (!TEST_true(ASN1_TIME_diff(&day, &sec, &atime, &atime))) {
 185         TEST_info("ASN1_TIME_diff(%s) to self failed", atime.data);
 186         error = 1;
 187     }
 188     if (!TEST_int_eq(day, 0) || !TEST_int_eq(sec, 0)) {
 189         TEST_info("ASN1_TIME_diff(%s) to self not equal", atime.data);
 190         error = 1;
 191     }
 192
 193     if (!TEST_true(ASN1_TIME_diff(&day, &sec, &gtime, &atime))) {
 194         TEST_info("ASN1_TIME_diff(%s) to baseline failed", atime.data);
 195         error = 1;
 196     } else if (!((td->cmp_result == 0 && TEST_true((day == 0 && sec == 0))) ||
 197                  (td->cmp_result == -1 && TEST_true((day < 0 || sec < 0))) ||
 198                  (td->cmp_result == 1 && TEST_true((day > 0 || sec > 0))))) {
 199         TEST_info("ASN1_TIME_diff(%s) to baseline bad comparison", atime.data);
 200         error = 1;
 201     }
 202
 203     if (!TEST_int_eq(ASN1_TIME_cmp_time_t(&atime, gtime_t), td->cmp_result)) {
 204         TEST_info("ASN1_TIME_cmp_time_t(%s) to baseline bad comparison", atime.data);
 205         error = 1;
 206     }
 207
 208     ptime = ASN1_TIME_set(NULL, td->t);
 209     if (!TEST_ptr(ptime)) {
 210         TEST_info("ASN1_TIME_set(%ld) failed", (long)td->t);
 211         error = 1;
 212     } else {
 213         int local_error = 0;
 214         if (!TEST_int_eq(ASN1_TIME_cmp_time_t(ptime, td->t), 0)) {
 215             TEST_info("ASN1_TIME_set(%ld) compare failed (%s->%s)",
 216                     (long)td->t, td->data, ptime->data);
 217             local_error = error = 1;
 218         }
 219         if (!TEST_int_eq(ptime->type, td->expected_type)) {
 220             TEST_info("ASN1_TIME_set(%ld) unexpected type", (long)td->t);
 221             local_error = error = 1;
 222         }
 223         if (local_error)
 224             TEST_info("ASN1_TIME_set() = %*s", ptime->length, ptime->data);
 225         ASN1_TIME_free(ptime);
 226     }
 227
 228     ptime = ASN1_TIME_new();
 229     if (!TEST_ptr(ptime)) {
 230         TEST_info("ASN1_TIME_new() failed");
 231         error = 1;
 232     } else {
 233         int local_error = 0;
 234         if (!TEST_int_eq(ASN1_TIME_set_string(ptime, td->data), td->check_result)) {
 235             TEST_info("ASN1_TIME_set_string_gmt(%s) failed", td->data);
 236             local_error = error = 1;
 237         }
 238         if (!TEST_int_eq(ASN1_TIME_normalize(ptime), td->check_result)) {
 239             TEST_info("ASN1_TIME_normalize(%s) failed", td->data);
 240             local_error = error = 1;
 241         }
 242         if (!TEST_int_eq(ptime->type, td->expected_type)) {
 243             TEST_info("ASN1_TIME_set_string_gmt(%s) unexpected type", td->data);
 244             local_error = error = 1;
 245         }
 246         day = sec = 0;
 247         if (!TEST_true(ASN1_TIME_diff(&day, &sec, ptime, &atime)) || !TEST_int_eq(day, 0) || !TEST_int_eq(sec, 0)) {
 248             TEST_info("ASN1_TIME_diff(day=%d, sec=%d, %s) after ASN1_TIME_set_string_gmt() failed", day, sec, td->data);
 249             local_error = error = 1;
 250         }
 251         if (!TEST_int_eq(ASN1_TIME_cmp_time_t(ptime, gtime_t), td->cmp_result)) {
 252             TEST_info("ASN1_TIME_cmp_time_t(%s) after ASN1_TIME_set_string_gnt() to baseline bad comparison", td->data);
 253             local_error = error = 1;
 254         }
 255         if (local_error)
 256             TEST_info("ASN1_TIME_set_string_gmt() = %*s", ptime->length, ptime->data);
 257         ASN1_TIME_free(ptime);
 258     }
 259
 260     ptime = ASN1_TIME_new();
 261     if (!TEST_ptr(ptime)) {
 262         TEST_info("ASN1_TIME_new() failed");
 263         error = 1;
 264     } else {
 265         int local_error = 0;
 266         if (!TEST_int_eq(ASN1_TIME_set_string(ptime, td->data), td->check_result)) {
 267             TEST_info("ASN1_TIME_set_string(%s) failed", td->data);
 268             local_error = error = 1;
 269         }
 270         day = sec = 0;
 271         if (!TEST_true(ASN1_TIME_diff(&day, &sec, ptime, &atime)) || !TEST_int_eq(day, 0) || !TEST_int_eq(sec, 0)) {
 272             TEST_info("ASN1_TIME_diff(day=%d, sec=%d, %s) after ASN1_TIME_set_string() failed", day, sec, td->data);
 273             local_error = error = 1;
 274         }
 275         if (!TEST_int_eq(ASN1_TIME_cmp_time_t(ptime, gtime_t), td->cmp_result)) {
 276             TEST_info("ASN1_TIME_cmp_time_t(%s) after ASN1_TIME_set_string() to baseline bad comparison", td->data);
 277             local_error = error = 1;
 278         }
 279         if (local_error)
 280             TEST_info("ASN1_TIME_set_string() = %*s", ptime->length, ptime->data);
 281         ASN1_TIME_free(ptime);
 282     }
 283
 284     if (td->type == V_ASN1_UTCTIME) {
 285         ptime = ASN1_TIME_to_generalizedtime(&atime, NULL);
 286         if (td->convert_result == 1 && !TEST_ptr(ptime)) {
 287             TEST_info("ASN1_TIME_to_generalizedtime(%s) failed", atime.data);
 288             error = 1;
 289         } else if (td->convert_result == 0 && !TEST_ptr_null(ptime)) {
 290             TEST_info("ASN1_TIME_to_generalizedtime(%s) should have failed", atime.data);
 291             error = 1;
 292         }
 293         if (ptime != NULL && !TEST_int_eq(ASN1_TIME_cmp_time_t(ptime, td->t), 0)) {
 294             TEST_info("ASN1_TIME_to_generalizedtime(%s->%s) bad result", atime.data, ptime->data);
 295             error = 1;
 296         }
 297         ASN1_TIME_free(ptime);
 298     }
 299     /* else cannot simply convert GENERALIZEDTIME to UTCTIME */
 300
 301     if (error)
 302         TEST_error("atime=%s", atime.data);
 303
 304     return !error;
 305 }
 306
 307 static int test_table_pos(int idx)
 308 {
 309     return test_table(tbl_testdata_pos, idx);
 310 }
 311
 312 static int test_table_neg(int idx)
 313 {
 314     return test_table(tbl_testdata_neg, idx);
 315 }
 316
 317 static int test_table_pos_64bit(int idx)
 318 {
 319     return test_table(tbl_testdata_pos_64bit, idx);
 320 }
 321
 322 static int test_table_neg_64bit(int idx)
 323 {
 324     return test_table(tbl_testdata_neg_64bit, idx);
 325 }
 326
 327 struct compare_testdata {
 328     ASN1_TIME t1;
 329     ASN1_TIME t2;
 330     int result;
 331 };
 332
 333 static unsigned char TODAY_GEN_STR[] = "20170825000000Z";
 334 static unsigned char TOMORROW_GEN_STR[] = "20170826000000Z";
 335 static unsigned char TODAY_UTC_STR[] = "170825000000Z";
 336 static unsigned char TOMORROW_UTC_STR[] = "170826000000Z";
 337
 338 #define TODAY_GEN    { sizeof(TODAY_GEN_STR)-1, V_ASN1_GENERALIZEDTIME, TODAY_GEN_STR, 0 }
 339 #define TOMORROW_GEN { sizeof(TOMORROW_GEN_STR)-1, V_ASN1_GENERALIZEDTIME, TOMORROW_GEN_STR, 0 }
 340 #define TODAY_UTC    { sizeof(TODAY_UTC_STR)-1, V_ASN1_UTCTIME, TODAY_UTC_STR, 0 }
 341 #define TOMORROW_UTC { sizeof(TOMORROW_UTC_STR)-1, V_ASN1_UTCTIME, TOMORROW_UTC_STR, 0 }
 342
 343 static struct compare_testdata tbl_compare_testdata[] = {
 344     { TODAY_GEN,    TODAY_GEN,     0 },
 345     { TODAY_GEN,    TODAY_UTC,     0 },
 346     { TODAY_GEN,    TOMORROW_GEN, -1 },
 347     { TODAY_GEN,    TOMORROW_UTC, -1 },
 348
 349     { TODAY_UTC,    TODAY_GEN,     0 },
 350     { TODAY_UTC,    TODAY_UTC,     0 },
 351     { TODAY_UTC,    TOMORROW_GEN, -1 },
 352     { TODAY_UTC,    TOMORROW_UTC, -1 },
 353
 354     { TOMORROW_GEN, TODAY_GEN,     1 },
 355     { TOMORROW_GEN, TODAY_UTC,     1 },
 356     { TOMORROW_GEN, TOMORROW_GEN,  0 },
 357     { TOMORROW_GEN, TOMORROW_UTC,  0 },
 358
 359     { TOMORROW_UTC, TODAY_GEN,     1 },
 360     { TOMORROW_UTC, TODAY_UTC,     1 },
 361     { TOMORROW_UTC, TOMORROW_GEN,  0 },
 362     { TOMORROW_UTC, TOMORROW_UTC,  0 }
 363 };
 364
 365 static int test_table_compare(int idx)
 366 {
 367     struct compare_testdata *td = &tbl_compare_testdata[idx];
 368
 369     return TEST_int_eq(ASN1_TIME_compare(&td->t1, &td->t2), td->result);
 370 }
 371
 372 static int test_time_dup(void)
 373 {
 374     int ret = 0;
 375     ASN1_TIME *asn1_time = NULL;
 376     ASN1_TIME *asn1_time_dup = NULL;
 377     ASN1_TIME *asn1_gentime = NULL;
 378
 379     asn1_time = ASN1_TIME_adj(NULL, time(NULL), 0, 0);
 380     if (asn1_time == NULL) {
 381         TEST_info("Internal error.");
 382         goto err;
 383     }
 384
 385     asn1_gentime = ASN1_TIME_to_generalizedtime(asn1_time, NULL);
 386     if (asn1_gentime == NULL) {
 387         TEST_info("Internal error.");
 388         goto err;
 389     }
 390
 391     asn1_time_dup = ASN1_TIME_dup(asn1_time);
 392     if (!TEST_ptr_ne(asn1_time_dup, NULL)) {
 393         TEST_info("ASN1_TIME_dup() failed.");
 394         goto err;
 395     }
 396     if (!TEST_int_eq(ASN1_TIME_compare(asn1_time, asn1_time_dup), 0)) {
 397         TEST_info("ASN1_TIME_dup() duplicated non-identical value.");
 398         goto err;
 399     }
 400     ASN1_STRING_free(asn1_time_dup);
 401
 402     asn1_time_dup = ASN1_UTCTIME_dup(asn1_time);
 403     if (!TEST_ptr_ne(asn1_time_dup, NULL)) {
 404         TEST_info("ASN1_UTCTIME_dup() failed.");
 405         goto err;
 406     }
 407     if (!TEST_int_eq(ASN1_TIME_compare(asn1_time, asn1_time_dup), 0)) {
 408         TEST_info("ASN1_UTCTIME_dup() duplicated non-identical UTCTIME value.");
 409         goto err;
 410     }
 411     ASN1_STRING_free(asn1_time_dup);
 412
 413     asn1_time_dup = ASN1_GENERALIZEDTIME_dup(asn1_gentime);
 414     if (!TEST_ptr_ne(asn1_time_dup, NULL)) {
 415         TEST_info("ASN1_GENERALIZEDTIME_dup() failed.");
 416         goto err;
 417     }
 418     if (!TEST_int_eq(ASN1_TIME_compare(asn1_gentime, asn1_time_dup), 0)) {
 419         TEST_info("ASN1_GENERALIZEDTIME_dup() dup'ed non-identical value.");
 420         goto err;
 421     }
 422
 423     ret = 1;
 424  err:
 425     ASN1_STRING_free(asn1_time);
 426     ASN1_STRING_free(asn1_gentime);
 427     ASN1_STRING_free(asn1_time_dup);
 428     return ret;
 429 }
 430
 431 static int convert_asn1_to_time_t(int idx)
 432 {
 433     time_t testdateutc;
 434
 435     testdateutc = ossl_asn1_string_to_time_t(asn1_to_utc[idx].input);
 436
 437     if (!TEST_time_t_eq(testdateutc, asn1_to_utc[idx].expected)) {
 438         TEST_info("ossl_asn1_string_to_time_t (%s) failed: expected %lli, got %lli\n",
 439                   asn1_to_utc[idx].input,
 440                   (long long int)asn1_to_utc[idx].expected,
 441                   (long long int)testdateutc);
 442         return 0;
 443     }
 444     return 1;
 445 }
 446
 447 /*
 448  * this test is here to exercise ossl_asn1_time_from_tm
 449  * with an integer year close to INT_MAX.
 450  */
 451 static int convert_tm_to_asn1_time(void)
 452 {
 453     /* we need 64 bit time_t */
 454 #if ((ULONG_MAX >> 31) >> 31) >= 1
 455     time_t t;
 456     ASN1_TIME *at;
 457
 458     if (sizeof(time_t) * CHAR_BIT >= 64) {
 459         t = 67768011791126057ULL;
 460         at = ASN1_TIME_set(NULL, t);
 461         /*
 462          * If ASN1_TIME_set returns NULL, it means it could not handle the input
 463          * which is fine for this edge case.
 464          */
 465         ASN1_STRING_free(at);
 466     }
 467 #endif
 468     return 1;
 469 }
 470
 471 int setup_tests(void)
 472 {
 473     /*
 474      * On platforms where |time_t| is an unsigned integer, t will be a
 475      * positive number.
 476      *
 477      * We check if we're on a platform with a signed |time_t| with '!(t > 0)'
 478      * because some compilers are picky if you do 't < 0', or even 't <= 0'
 479      * if |t| is unsigned.
 480      */
 481     time_t t = -1;
 482     /*
 483      * On some platforms, |time_t| is signed, but a negative value is an
 484      * error, and using it with gmtime() or localtime() generates a NULL.
 485      * If that is the case, we can't perform tests on negative values.
 486      */
 487     struct tm *ptm = localtime(&t);
 488
 489     ADD_ALL_TESTS(test_table_pos, OSSL_NELEM(tbl_testdata_pos));
 490     if (!(t > 0) && ptm != NULL) {
 491         TEST_info("Adding negative-sign time_t tests");
 492         ADD_ALL_TESTS(test_table_neg, OSSL_NELEM(tbl_testdata_neg));
 493     }
 494     if (sizeof(time_t) > sizeof(uint32_t)) {
 495         TEST_info("Adding 64-bit time_t tests");
 496         ADD_ALL_TESTS(test_table_pos_64bit, OSSL_NELEM(tbl_testdata_pos_64bit));
 497 #ifndef __hpux
 498         if (!(t > 0) && ptm != NULL) {
 499             TEST_info("Adding negative-sign 64-bit time_t tests");
 500             ADD_ALL_TESTS(test_table_neg_64bit, OSSL_NELEM(tbl_testdata_neg_64bit));
 501         }
 502 #endif
 503     }
 504     ADD_ALL_TESTS(test_table_compare, OSSL_NELEM(tbl_compare_testdata));
 505     ADD_TEST(test_time_dup);
 506     ADD_ALL_TESTS(convert_asn1_to_time_t, OSSL_NELEM(asn1_to_utc));
 507     ADD_TEST(convert_tm_to_asn1_time);
 508     return 1;
 509 }