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Revision 098f27f9ef8be2a418f76896ee3c824e8709fcf7 authored by Matt Caswell on 17 October 2023, 13:55:48 UTC, committed by Tomas Mraz on 19 October 2023, 09:54:44 UTC
Ignore ping deadline when calculating tick deadline if we can't send
If the CC TX allowance is zero then we cannot send a PING frame at the
moment, so do not take into account the ping deadline when calculating the
tick deadline in that case.

This avoids the hang found by the fuzzer mentioned in
https://github.com/openssl/openssl/pull/22368#issuecomment-1765131727

Reviewed-by: Hugo Landau <hlandau@openssl.org>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/22410)
1 parent 56e3032
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  • test
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  • x509_time_test.c
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x509_time_test.c
/*
 * Copyright 2017-2021 The OpenSSL Project Authors. All Rights Reserved.
 *
 * Licensed under the Apache License 2.0 (the "License").  You may not use
 * this file except in compliance with the License.  You can obtain a copy
 * in the file LICENSE in the source distribution or at
 * https://www.openssl.org/source/license.html
 */

/* Tests for X509 time functions */

#include <string.h>
#include <time.h>

#include <openssl/asn1.h>
#include <openssl/x509.h>
#include "testutil.h"
#include "internal/nelem.h"

typedef struct {
    const char *data;
    int type;
    time_t cmp_time;
    /* -1 if asn1_time <= cmp_time, 1 if asn1_time > cmp_time, 0 if error. */
    int expected;
} TESTDATA;

typedef struct {
    const char *data;
    /* 0 for check-only mode, 1 for set-string mode */
    int set_string;
    /* 0 for error, 1 if succeed */
    int expected;
    /*
     * The following 2 fields are ignored if set_string field is set to '0'
     * (in check only mode).
     *
     * But they can still be ignored explicitly in set-string mode by:
     * setting -1 to expected_type and setting NULL to expected_string.
     *
     * It's useful in a case of set-string mode but the expected result
     * is a 'parsing error'.
     */
    int expected_type;
    const char *expected_string;
} TESTDATA_FORMAT;

/*
 * Actually, the "loose" mode has been tested in
 * those time-compare-cases, so we may not test it again.
 */
static TESTDATA_FORMAT x509_format_tests[] = {
    /* GeneralizedTime */
    {
        /* good format, check only */
        "20170217180105Z", 0, 1, -1, NULL,
    },
    {
        /* not leap year, check only */
        "20170229180105Z", 0, 0, -1, NULL,
    },
    {
        /* leap year, check only */
        "20160229180105Z", 0, 1, -1, NULL,
    },
    {
        /* SS is missing, check only */
        "201702171801Z", 0, 0, -1, NULL,
    },
    {
        /* fractional seconds, check only */
        "20170217180105.001Z", 0, 0, -1, NULL,
    },
    {
        /* timezone, check only */
        "20170217180105+0800", 0, 0, -1, NULL,
    },
    {
        /* SS is missing, set string */
        "201702171801Z", 1, 0, -1, NULL,
    },
    {
        /* fractional seconds, set string */
        "20170217180105.001Z", 1, 0, -1, NULL,
    },
    {
        /* timezone, set string */
        "20170217180105+0800", 1, 0, -1, NULL,
    },
    {
        /* good format, check returned 'turned' string */
        "20170217180154Z", 1, 1, V_ASN1_UTCTIME, "170217180154Z",
    },
    {
        /* good format, check returned string */
        "20510217180154Z", 1, 1, V_ASN1_GENERALIZEDTIME, "20510217180154Z",
    },
    {
        /* good format but out of UTC range, check returned string */
        "19230419180154Z", 1, 1, V_ASN1_GENERALIZEDTIME, "19230419180154Z",
    },
    /* UTC */
    {
        /* SS is missing, check only */
        "1702171801Z", 0, 0, -1, NULL,
    },
    {
        /* not leap year, check only */
        "050229180101Z", 0, 0, -1, NULL,
    },
    {
        /* leap year, check only */
        "040229180101Z", 0, 1, -1, NULL,
    },
    {
        /* timezone, check only */
        "170217180154+0800", 0, 0, -1, NULL,
    },
    {
        /* SS is missing, set string */
        "1702171801Z", 1, 0, -1, NULL,
    },
    {
        /* timezone, set string */
        "170217180154+0800", 1, 0, -1, NULL,
    },
    {
        /* 2017, good format, check returned string */
        "170217180154Z", 1, 1, V_ASN1_UTCTIME, "170217180154Z",
    },
    {
        /* 1998, good format, check returned string */
        "981223180154Z", 1, 1, V_ASN1_UTCTIME, "981223180154Z",
    },
};

static TESTDATA x509_cmp_tests[] = {
    {
        "20170217180154Z", V_ASN1_GENERALIZEDTIME,
        /* The same in seconds since epoch. */
        1487354514, -1,
    },
    {
        "20170217180154Z", V_ASN1_GENERALIZEDTIME,
        /* One second more. */
        1487354515, -1,
    },
    {
        "20170217180154Z", V_ASN1_GENERALIZEDTIME,
        /* One second less. */
        1487354513, 1,
    },
    /* Same as UTC time. */
    {
        "170217180154Z", V_ASN1_UTCTIME,
        /* The same in seconds since epoch. */
        1487354514, -1,
    },
    {
        "170217180154Z", V_ASN1_UTCTIME,
        /* One second more. */
        1487354515, -1,
    },
    {
        "170217180154Z", V_ASN1_UTCTIME,
        /* One second less. */
        1487354513, 1,
    },
    /* UTCTime from the 20th century. */
    {
        "990217180154Z", V_ASN1_UTCTIME,
        /* The same in seconds since epoch. */
        919274514, -1,
    },
    {
        "990217180154Z", V_ASN1_UTCTIME,
        /* One second more. */
        919274515, -1,
    },
    {
        "990217180154Z", V_ASN1_UTCTIME,
        /* One second less. */
        919274513, 1,
    },
    /* Various invalid formats. */
    {
        /* No trailing Z. */
        "20170217180154", V_ASN1_GENERALIZEDTIME, 0, 0,
    },
    {
        /* No trailing Z, UTCTime. */
        "170217180154", V_ASN1_UTCTIME, 0, 0,
    },
    {
        /* No seconds. */
        "201702171801Z", V_ASN1_GENERALIZEDTIME, 0, 0,
    },
    {
        /* No seconds, UTCTime. */
        "1702171801Z", V_ASN1_UTCTIME, 0, 0,
    },
    {
        /* Fractional seconds. */
        "20170217180154.001Z", V_ASN1_GENERALIZEDTIME, 0, 0,
    },
    {
        /* Fractional seconds, UTCTime. */
        "170217180154.001Z", V_ASN1_UTCTIME, 0, 0,
    },
    {
        /* Timezone offset. */
        "20170217180154+0100", V_ASN1_GENERALIZEDTIME, 0, 0,
    },
    {
        /* Timezone offset, UTCTime. */
        "170217180154+0100", V_ASN1_UTCTIME, 0, 0,
    },
    {
        /* Extra digits. */
        "2017021718015400Z", V_ASN1_GENERALIZEDTIME, 0, 0,
    },
    {
        /* Extra digits, UTCTime. */
        "17021718015400Z", V_ASN1_UTCTIME, 0, 0,
    },
    {
        /* Non-digits. */
        "2017021718015aZ", V_ASN1_GENERALIZEDTIME, 0, 0,
    },
    {
        /* Non-digits, UTCTime. */
        "17021718015aZ", V_ASN1_UTCTIME, 0, 0,
    },
    {
        /* Trailing garbage. */
        "20170217180154Zlongtrailinggarbage", V_ASN1_GENERALIZEDTIME, 0, 0,
    },
    {
        /* Trailing garbage, UTCTime. */
        "170217180154Zlongtrailinggarbage", V_ASN1_UTCTIME, 0, 0,
    },
    {
         /* Swapped type. */
        "20170217180154Z", V_ASN1_UTCTIME, 0, 0,
    },
    {
        /* Swapped type. */
        "170217180154Z", V_ASN1_GENERALIZEDTIME, 0, 0,
    },
    {
        /* Bad type. */
        "20170217180154Z", V_ASN1_OCTET_STRING, 0, 0,
    },
};

static int test_x509_cmp_time(int idx)
{
    ASN1_TIME t;
    int result;

    memset(&t, 0, sizeof(t));
    t.type = x509_cmp_tests[idx].type;
    t.data = (unsigned char*)(x509_cmp_tests[idx].data);
    t.length = strlen(x509_cmp_tests[idx].data);
    t.flags = 0;

    result = X509_cmp_time(&t, &x509_cmp_tests[idx].cmp_time);
    if (!TEST_int_eq(result, x509_cmp_tests[idx].expected)) {
        TEST_info("test_x509_cmp_time(%d) failed: expected %d, got %d\n",
                idx, x509_cmp_tests[idx].expected, result);
        return 0;
    }
    return 1;
}

static int test_x509_cmp_time_current(void)
{
    time_t now = time(NULL);
    /* Pick a day earlier and later, relative to any system clock. */
    ASN1_TIME *asn1_before = NULL, *asn1_after = NULL;
    int cmp_result, failed = 0;

    asn1_before = ASN1_TIME_adj(NULL, now, -1, 0);
    asn1_after = ASN1_TIME_adj(NULL, now, 1, 0);

    cmp_result  = X509_cmp_time(asn1_before, NULL);
    if (!TEST_int_eq(cmp_result, -1))
        failed = 1;

    cmp_result = X509_cmp_time(asn1_after, NULL);
    if (!TEST_int_eq(cmp_result, 1))
        failed = 1;

    ASN1_TIME_free(asn1_before);
    ASN1_TIME_free(asn1_after);

    return failed == 0;
}

static int test_X509_cmp_timeframe_vpm(const X509_VERIFY_PARAM *vpm,
                                       ASN1_TIME *asn1_before,
                                       ASN1_TIME *asn1_mid,
                                       ASN1_TIME *asn1_after)
{
    int always_0 = vpm != NULL
        && (X509_VERIFY_PARAM_get_flags(vpm) & X509_V_FLAG_USE_CHECK_TIME) == 0
        && (X509_VERIFY_PARAM_get_flags(vpm) & X509_V_FLAG_NO_CHECK_TIME) != 0;

    return asn1_before != NULL && asn1_mid != NULL && asn1_after != NULL
        && TEST_int_eq(X509_cmp_timeframe(vpm, asn1_before, asn1_after), 0)
        && TEST_int_eq(X509_cmp_timeframe(vpm, asn1_before, NULL), 0)
        && TEST_int_eq(X509_cmp_timeframe(vpm, NULL, asn1_after), 0)
        && TEST_int_eq(X509_cmp_timeframe(vpm, NULL, NULL), 0)
        && TEST_int_eq(X509_cmp_timeframe(vpm, asn1_after, asn1_after),
                       always_0 ? 0 : -1)
        && TEST_int_eq(X509_cmp_timeframe(vpm, asn1_before, asn1_before),
                       always_0 ? 0 : 1)
        && TEST_int_eq(X509_cmp_timeframe(vpm, asn1_after, asn1_before),
                       always_0 ? 0 : 1);
}

static int test_X509_cmp_timeframe(void)
{
    time_t now = time(NULL);
    ASN1_TIME *asn1_mid = ASN1_TIME_adj(NULL, now, 0, 0);
    /* Pick a day earlier and later, relative to any system clock. */
    ASN1_TIME *asn1_before = ASN1_TIME_adj(NULL, now, -1, 0);
    ASN1_TIME *asn1_after = ASN1_TIME_adj(NULL, now, 1, 0);
    X509_VERIFY_PARAM *vpm = X509_VERIFY_PARAM_new();
    int res = 0;

    if (vpm == NULL)
        goto finish;
    res = test_X509_cmp_timeframe_vpm(NULL, asn1_before, asn1_mid, asn1_after)
        && test_X509_cmp_timeframe_vpm(vpm, asn1_before, asn1_mid, asn1_after);

    X509_VERIFY_PARAM_set_time(vpm, now);
    res = res
        && test_X509_cmp_timeframe_vpm(vpm, asn1_before, asn1_mid, asn1_after)
        && X509_VERIFY_PARAM_set_flags(vpm, X509_V_FLAG_NO_CHECK_TIME)
        && test_X509_cmp_timeframe_vpm(vpm, asn1_before, asn1_mid, asn1_after);

    X509_VERIFY_PARAM_free(vpm);
finish:
    ASN1_TIME_free(asn1_mid);
    ASN1_TIME_free(asn1_before);
    ASN1_TIME_free(asn1_after);

    return res;
}

static int test_x509_time(int idx)
{
    ASN1_TIME *t = NULL;
    int result, rv = 0;

    if (x509_format_tests[idx].set_string) {
        /* set-string mode */
        t = ASN1_TIME_new();
        if (t == NULL) {
            TEST_info("test_x509_time(%d) failed: internal error\n", idx);
            return 0;
        }
    }

    result = ASN1_TIME_set_string_X509(t, x509_format_tests[idx].data);
    /* time string parsing result is always checked against what's expected */
    if (!TEST_int_eq(result, x509_format_tests[idx].expected)) {
        TEST_info("test_x509_time(%d) failed: expected %d, got %d\n",
                idx, x509_format_tests[idx].expected, result);
        goto out;
    }

    /* if t is not NULL but expected_type is ignored(-1), it is an 'OK' case */
    if (t != NULL && x509_format_tests[idx].expected_type != -1) {
        if (!TEST_int_eq(t->type, x509_format_tests[idx].expected_type)) {
            TEST_info("test_x509_time(%d) failed: expected_type %d, got %d\n",
                    idx, x509_format_tests[idx].expected_type, t->type);
            goto out;
        }
    }

    /* if t is not NULL but expected_string is NULL, it is an 'OK' case too */
    if (t != NULL && x509_format_tests[idx].expected_string) {
        if (!TEST_mem_eq((const char *)t->data, t->length,
                    x509_format_tests[idx].expected_string,
                    strlen(x509_format_tests[idx].expected_string))) {
            TEST_info("test_x509_time(%d) failed: expected_string %s, got %.*s\n",
                    idx, x509_format_tests[idx].expected_string, t->length,
                    t->data);
            goto out;
        }
    }

    rv = 1;
out:
    if (t != NULL)
        ASN1_TIME_free(t);
    return rv;
}

static const struct {
    int y, m, d;
    int yd, wd;
} day_of_week_tests[] = {
    /*YYYY  MM  DD  DoY  DoW */
    { 1900,  1,  1,   0, 1 },
    { 1900,  2, 28,  58, 3 },
    { 1900,  3,  1,  59, 4 },
    { 1900, 12, 31, 364, 1 },
    { 1901,  1,  1,   0, 2 },
    { 1970,  1,  1,   0, 4 },
    { 1999,  1, 10,   9, 0 },
    { 1999, 12, 31, 364, 5 },
    { 2000,  1,  1,   0, 6 },
    { 2000,  2, 28,  58, 1 },
    { 2000,  2, 29,  59, 2 },
    { 2000,  3,  1,  60, 3 },
    { 2000, 12, 31, 365, 0 },
    { 2001,  1,  1,   0, 1 },
    { 2008,  1,  1,   0, 2 },
    { 2008,  2, 28,  58, 4 },
    { 2008,  2, 29,  59, 5 },
    { 2008,  3,  1,  60, 6 },
    { 2008, 12, 31, 365, 3 },
    { 2009,  1,  1,   0, 4 },
    { 2011,  1,  1,   0, 6 },
    { 2011,  2, 28,  58, 1 },
    { 2011,  3,  1,  59, 2 },
    { 2011, 12, 31, 364, 6 },
    { 2012,  1,  1,   0, 0 },
    { 2019,  1,  2,   1, 3 },
    { 2019,  2,  2,  32, 6 },
    { 2019,  3,  2,  60, 6 },
    { 2019,  4,  2,  91, 2 },
    { 2019,  5,  2, 121, 4 },
    { 2019,  6,  2, 152, 0 },
    { 2019,  7,  2, 182, 2 },
    { 2019,  8,  2, 213, 5 },
    { 2019,  9,  2, 244, 1 },
    { 2019, 10,  2, 274, 3 },
    { 2019, 11,  2, 305, 6 },
    { 2019, 12,  2, 335, 1 },
    { 2020,  1,  2,   1, 4 },
    { 2020,  2,  2,  32, 0 },
    { 2020,  3,  2,  61, 1 },
    { 2020,  4,  2,  92, 4 },
    { 2020,  5,  2, 122, 6 },
    { 2020,  6,  2, 153, 2 },
    { 2020,  7,  2, 183, 4 },
    { 2020,  8,  2, 214, 0 },
    { 2020,  9,  2, 245, 3 },
    { 2020, 10,  2, 275, 5 },
    { 2020, 11,  2, 306, 1 },
    { 2020, 12,  2, 336, 3 }
};

static int test_days(int n)
{
    char d[16];
    ASN1_TIME *a = NULL;
    struct tm t;
    int r;

    BIO_snprintf(d, sizeof(d), "%04d%02d%02d050505Z",
                 day_of_week_tests[n].y, day_of_week_tests[n].m,
                 day_of_week_tests[n].d);

    if (!TEST_ptr(a = ASN1_TIME_new()))
        return 0;

    r = TEST_true(ASN1_TIME_set_string(a, d))
        && TEST_true(ASN1_TIME_to_tm(a, &t))
        && TEST_int_eq(t.tm_yday, day_of_week_tests[n].yd)
        && TEST_int_eq(t.tm_wday, day_of_week_tests[n].wd);

    ASN1_TIME_free(a);
    return r;
}

#define construct_asn1_time(s, t, e) \
    { { sizeof(s) - 1, t, (unsigned char*)s, 0 }, e }

static const struct {
    ASN1_TIME asn1;
    const char *readable;
} x509_print_tests_rfc_822 [] = {
    /* Generalized Time */
    construct_asn1_time("20170731222050Z", V_ASN1_GENERALIZEDTIME,
            "Jul 31 22:20:50 2017 GMT"),
    /* Generalized Time, no seconds */
    construct_asn1_time("201707312220Z", V_ASN1_GENERALIZEDTIME,
            "Jul 31 22:20:00 2017 GMT"),
    /* Generalized Time, fractional seconds (3 digits) */
    construct_asn1_time("20170731222050.123Z", V_ASN1_GENERALIZEDTIME,
            "Jul 31 22:20:50.123 2017 GMT"),
    /* Generalized Time, fractional seconds (1 digit) */
    construct_asn1_time("20170731222050.1Z", V_ASN1_GENERALIZEDTIME,
            "Jul 31 22:20:50.1 2017 GMT"),
    /* Generalized Time, fractional seconds (0 digit) */
    construct_asn1_time("20170731222050.Z", V_ASN1_GENERALIZEDTIME,
            "Bad time value"),
    /* UTC Time */
    construct_asn1_time("170731222050Z", V_ASN1_UTCTIME,
            "Jul 31 22:20:50 2017 GMT"),
    /* UTC Time, no seconds */
    construct_asn1_time("1707312220Z", V_ASN1_UTCTIME,
            "Jul 31 22:20:00 2017 GMT"),
};

static const struct {
    ASN1_TIME asn1;
    const char *readable;
} x509_print_tests_iso_8601 [] = {
    /* Generalized Time */
    construct_asn1_time("20170731222050Z", V_ASN1_GENERALIZEDTIME,
            "2017-07-31 22:20:50Z"),
    /* Generalized Time, no seconds */
    construct_asn1_time("201707312220Z", V_ASN1_GENERALIZEDTIME,
            "2017-07-31 22:20:00Z"),
    /* Generalized Time, fractional seconds (3 digits) */
    construct_asn1_time("20170731222050.123Z", V_ASN1_GENERALIZEDTIME,
            "2017-07-31 22:20:50.123Z"),
    /* Generalized Time, fractional seconds (1 digit) */
    construct_asn1_time("20170731222050.1Z", V_ASN1_GENERALIZEDTIME,
            "2017-07-31 22:20:50.1Z"),
    /* Generalized Time, fractional seconds (0 digit) */
    construct_asn1_time("20170731222050.Z", V_ASN1_GENERALIZEDTIME,
            "Bad time value"),
    /* UTC Time */
    construct_asn1_time("170731222050Z", V_ASN1_UTCTIME,
            "2017-07-31 22:20:50Z"),
    /* UTC Time, no seconds */
    construct_asn1_time("1707312220Z", V_ASN1_UTCTIME,
            "2017-07-31 22:20:00Z"),
};

static int test_x509_time_print_rfc_822(int idx)
{
    BIO *m;
    int ret = 0, rv;
    char *pp;
    const char *readable;

    if (!TEST_ptr(m = BIO_new(BIO_s_mem())))
        goto err;

    rv = ASN1_TIME_print_ex(m, &x509_print_tests_rfc_822[idx].asn1, ASN1_DTFLGS_RFC822);
    readable = x509_print_tests_rfc_822[idx].readable;

    if (rv == 0 && !TEST_str_eq(readable, "Bad time value")) {
        /* only if the test case intends to fail... */
        goto err;
    }
    if (!TEST_int_ne(rv = BIO_get_mem_data(m, &pp), 0)
        || !TEST_int_eq(rv, (int)strlen(readable))
        || !TEST_strn_eq(pp, readable, rv))
        goto err;

    ret = 1;
 err:
    BIO_free(m);
    return ret;
}

static int test_x509_time_print_iso_8601(int idx)
{
    BIO *m;
    int ret = 0, rv;
    char *pp;
    const char *readable;

    if (!TEST_ptr(m = BIO_new(BIO_s_mem())))
        goto err;

    rv = ASN1_TIME_print_ex(m, &x509_print_tests_iso_8601[idx].asn1, ASN1_DTFLGS_ISO8601);
    readable = x509_print_tests_iso_8601[idx].readable;

    if (rv == 0 && !TEST_str_eq(readable, "Bad time value")) {
        /* only if the test case intends to fail... */
        goto err;
    }
    if (!TEST_int_ne(rv = BIO_get_mem_data(m, &pp), 0)
        || !TEST_int_eq(rv, (int)strlen(readable))
        || !TEST_strn_eq(pp, readable, rv))
        goto err;

    ret = 1;
 err:
    BIO_free(m);
    return ret;
}

int setup_tests(void)
{
    ADD_TEST(test_x509_cmp_time_current);
    ADD_TEST(test_X509_cmp_timeframe);
    ADD_ALL_TESTS(test_x509_cmp_time, OSSL_NELEM(x509_cmp_tests));
    ADD_ALL_TESTS(test_x509_time, OSSL_NELEM(x509_format_tests));
    ADD_ALL_TESTS(test_days, OSSL_NELEM(day_of_week_tests));
    ADD_ALL_TESTS(test_x509_time_print_rfc_822, OSSL_NELEM(x509_print_tests_rfc_822));
    ADD_ALL_TESTS(test_x509_time_print_iso_8601, OSSL_NELEM(x509_print_tests_iso_8601));
    return 1;
}
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