[331] | 1 | /*
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| 2 | * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
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| 3 | *
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| 4 | * Licensed under the OpenSSL license (the "License"). You may not use
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| 5 | * this file except in compliance with the License. You can obtain a copy
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| 6 | * in the file LICENSE in the source distribution or at
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| 7 | * https://www.openssl.org/source/license.html
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| 8 | */
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| 9 |
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| 10 | #include <stdio.h>
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| 11 | #include <time.h>
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| 12 | #include "internal/cryptlib.h"
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| 13 | #include <openssl/asn1.h>
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| 14 | #include "asn1_locl.h"
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| 15 |
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| 16 | int asn1_utctime_to_tm(struct tm *tm, const ASN1_UTCTIME *d)
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| 17 | {
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| 18 | static const int min[8] = { 0, 1, 1, 0, 0, 0, 0, 0 };
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| 19 | static const int max[8] = { 99, 12, 31, 23, 59, 59, 12, 59 };
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| 20 | char *a;
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| 21 | int n, i, l, o;
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| 22 |
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| 23 | if (d->type != V_ASN1_UTCTIME)
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| 24 | return (0);
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| 25 | l = d->length;
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| 26 | a = (char *)d->data;
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| 27 | o = 0;
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| 28 |
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| 29 | if (l < 11)
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| 30 | goto err;
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| 31 | for (i = 0; i < 6; i++) {
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| 32 | if ((i == 5) && ((a[o] == 'Z') || (a[o] == '+') || (a[o] == '-'))) {
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| 33 | i++;
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| 34 | if (tm)
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| 35 | tm->tm_sec = 0;
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| 36 | break;
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| 37 | }
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| 38 | if ((a[o] < '0') || (a[o] > '9'))
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| 39 | goto err;
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| 40 | n = a[o] - '0';
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| 41 | if (++o > l)
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| 42 | goto err;
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| 43 |
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| 44 | if ((a[o] < '0') || (a[o] > '9'))
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| 45 | goto err;
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| 46 | n = (n * 10) + a[o] - '0';
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| 47 | if (++o > l)
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| 48 | goto err;
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| 49 |
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| 50 | if ((n < min[i]) || (n > max[i]))
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| 51 | goto err;
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| 52 | if (tm) {
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| 53 | switch (i) {
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| 54 | case 0:
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| 55 | tm->tm_year = n < 50 ? n + 100 : n;
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| 56 | break;
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| 57 | case 1:
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| 58 | tm->tm_mon = n - 1;
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| 59 | break;
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| 60 | case 2:
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| 61 | tm->tm_mday = n;
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| 62 | break;
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| 63 | case 3:
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| 64 | tm->tm_hour = n;
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| 65 | break;
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| 66 | case 4:
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| 67 | tm->tm_min = n;
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| 68 | break;
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| 69 | case 5:
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| 70 | tm->tm_sec = n;
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| 71 | break;
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| 72 | }
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| 73 | }
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| 74 | }
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| 75 | if (a[o] == 'Z')
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| 76 | o++;
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| 77 | else if ((a[o] == '+') || (a[o] == '-')) {
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| 78 | int offsign = a[o] == '-' ? -1 : 1, offset = 0;
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| 79 | o++;
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| 80 | if (o + 4 > l)
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| 81 | goto err;
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| 82 | for (i = 6; i < 8; i++) {
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| 83 | if ((a[o] < '0') || (a[o] > '9'))
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| 84 | goto err;
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| 85 | n = a[o] - '0';
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| 86 | o++;
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| 87 | if ((a[o] < '0') || (a[o] > '9'))
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| 88 | goto err;
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| 89 | n = (n * 10) + a[o] - '0';
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| 90 | if ((n < min[i]) || (n > max[i]))
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| 91 | goto err;
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| 92 | if (tm) {
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| 93 | if (i == 6)
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| 94 | offset = n * 3600;
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| 95 | else if (i == 7)
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| 96 | offset += n * 60;
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| 97 | }
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| 98 | o++;
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| 99 | }
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| 100 | if (offset && !OPENSSL_gmtime_adj(tm, 0, offset * offsign))
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| 101 | return 0;
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| 102 | }
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| 103 | return o == l;
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| 104 | err:
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| 105 | return 0;
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| 106 | }
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| 107 |
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| 108 | int ASN1_UTCTIME_check(const ASN1_UTCTIME *d)
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| 109 | {
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| 110 | return asn1_utctime_to_tm(NULL, d);
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| 111 | }
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| 112 |
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| 113 | int ASN1_UTCTIME_set_string(ASN1_UTCTIME *s, const char *str)
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| 114 | {
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| 115 | ASN1_UTCTIME t;
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| 116 |
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| 117 | t.type = V_ASN1_UTCTIME;
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| 118 | t.length = strlen(str);
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| 119 | t.data = (unsigned char *)str;
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| 120 | if (ASN1_UTCTIME_check(&t)) {
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| 121 | if (s != NULL) {
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| 122 | if (!ASN1_STRING_set((ASN1_STRING *)s, str, t.length))
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| 123 | return 0;
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| 124 | s->type = V_ASN1_UTCTIME;
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| 125 | }
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| 126 | return (1);
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| 127 | } else
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| 128 | return (0);
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| 129 | }
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| 130 |
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| 131 | ASN1_UTCTIME *ASN1_UTCTIME_set(ASN1_UTCTIME *s, time_t t)
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| 132 | {
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| 133 | return ASN1_UTCTIME_adj(s, t, 0, 0);
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| 134 | }
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| 135 |
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| 136 | ASN1_UTCTIME *ASN1_UTCTIME_adj(ASN1_UTCTIME *s, time_t t,
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| 137 | int offset_day, long offset_sec)
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| 138 | {
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| 139 | char *p;
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| 140 | struct tm *ts;
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| 141 | struct tm data;
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| 142 | size_t len = 20;
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| 143 | int free_s = 0;
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| 144 |
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| 145 | if (s == NULL) {
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| 146 | s = ASN1_UTCTIME_new();
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| 147 | if (s == NULL)
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| 148 | goto err;
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| 149 | free_s = 1;
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| 150 | }
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| 151 |
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| 152 | ts = OPENSSL_gmtime(&t, &data);
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| 153 | if (ts == NULL)
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| 154 | goto err;
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| 155 |
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| 156 | if (offset_day || offset_sec) {
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| 157 | if (!OPENSSL_gmtime_adj(ts, offset_day, offset_sec))
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| 158 | goto err;
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| 159 | }
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| 160 |
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| 161 | if ((ts->tm_year < 50) || (ts->tm_year >= 150))
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| 162 | goto err;
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| 163 |
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| 164 | p = (char *)s->data;
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| 165 | if ((p == NULL) || ((size_t)s->length < len)) {
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| 166 | p = OPENSSL_malloc(len);
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| 167 | if (p == NULL) {
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| 168 | ASN1err(ASN1_F_ASN1_UTCTIME_ADJ, ERR_R_MALLOC_FAILURE);
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| 169 | goto err;
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| 170 | }
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| 171 | OPENSSL_free(s->data);
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| 172 | s->data = (unsigned char *)p;
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| 173 | }
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| 174 |
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| 175 | BIO_snprintf(p, len, "%02d%02d%02d%02d%02d%02dZ", ts->tm_year % 100,
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| 176 | ts->tm_mon + 1, ts->tm_mday, ts->tm_hour, ts->tm_min,
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| 177 | ts->tm_sec);
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| 178 | s->length = strlen(p);
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| 179 | s->type = V_ASN1_UTCTIME;
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| 180 | #ifdef CHARSET_EBCDIC_not
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| 181 | ebcdic2ascii(s->data, s->data, s->length);
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| 182 | #endif
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| 183 | return (s);
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| 184 | err:
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| 185 | if (free_s)
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| 186 | ASN1_UTCTIME_free(s);
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| 187 | return NULL;
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| 188 | }
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| 189 |
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| 190 | int ASN1_UTCTIME_cmp_time_t(const ASN1_UTCTIME *s, time_t t)
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| 191 | {
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| 192 | struct tm stm, ttm;
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| 193 | int day, sec;
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| 194 |
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| 195 | if (!asn1_utctime_to_tm(&stm, s))
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| 196 | return -2;
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| 197 |
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| 198 | if (!OPENSSL_gmtime(&t, &ttm))
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| 199 | return -2;
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| 200 |
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| 201 | if (!OPENSSL_gmtime_diff(&day, &sec, &ttm, &stm))
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| 202 | return -2;
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| 203 |
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| 204 | if (day > 0)
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| 205 | return 1;
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| 206 | if (day < 0)
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| 207 | return -1;
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| 208 | if (sec > 0)
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| 209 | return 1;
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| 210 | if (sec < 0)
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| 211 | return -1;
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| 212 | return 0;
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| 213 | }
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| 214 |
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| 215 | int ASN1_UTCTIME_print(BIO *bp, const ASN1_UTCTIME *tm)
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| 216 | {
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| 217 | const char *v;
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| 218 | int gmt = 0;
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| 219 | int i;
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| 220 | int y = 0, M = 0, d = 0, h = 0, m = 0, s = 0;
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| 221 |
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| 222 | i = tm->length;
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| 223 | v = (const char *)tm->data;
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| 224 |
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| 225 | if (i < 10)
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| 226 | goto err;
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| 227 | if (v[i - 1] == 'Z')
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| 228 | gmt = 1;
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| 229 | for (i = 0; i < 10; i++)
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| 230 | if ((v[i] > '9') || (v[i] < '0'))
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| 231 | goto err;
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| 232 | y = (v[0] - '0') * 10 + (v[1] - '0');
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| 233 | if (y < 50)
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| 234 | y += 100;
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| 235 | M = (v[2] - '0') * 10 + (v[3] - '0');
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| 236 | if ((M > 12) || (M < 1))
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| 237 | goto err;
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| 238 | d = (v[4] - '0') * 10 + (v[5] - '0');
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| 239 | h = (v[6] - '0') * 10 + (v[7] - '0');
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| 240 | m = (v[8] - '0') * 10 + (v[9] - '0');
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| 241 | if (tm->length >= 12 &&
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| 242 | (v[10] >= '0') && (v[10] <= '9') && (v[11] >= '0') && (v[11] <= '9'))
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| 243 | s = (v[10] - '0') * 10 + (v[11] - '0');
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| 244 |
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| 245 | if (BIO_printf(bp, "%s %2d %02d:%02d:%02d %d%s",
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| 246 | _asn1_mon[M - 1], d, h, m, s, y + 1900,
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| 247 | (gmt) ? " GMT" : "") <= 0)
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| 248 | return (0);
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| 249 | else
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| 250 | return (1);
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| 251 | err:
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| 252 | BIO_write(bp, "Bad time value", 14);
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| 253 | return (0);
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| 254 | }
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