1 /* $OpenBSD: a_time.c,v 1.34 2022/06/27 13:54:57 beck Exp $ */ 2 /* ==================================================================== 3 * Copyright (c) 1999 The OpenSSL Project. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in 14 * the documentation and/or other materials provided with the 15 * distribution. 16 * 17 * 3. All advertising materials mentioning features or use of this 18 * software must display the following acknowledgment: 19 * "This product includes software developed by the OpenSSL Project 20 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" 21 * 22 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 23 * endorse or promote products derived from this software without 24 * prior written permission. For written permission, please contact 25 * licensing@OpenSSL.org. 26 * 27 * 5. Products derived from this software may not be called "OpenSSL" 28 * nor may "OpenSSL" appear in their names without prior written 29 * permission of the OpenSSL Project. 30 * 31 * 6. Redistributions of any form whatsoever must retain the following 32 * acknowledgment: 33 * "This product includes software developed by the OpenSSL Project 34 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" 35 * 36 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 37 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 38 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 39 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 40 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 41 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 42 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 43 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 44 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 45 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 46 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 47 * OF THE POSSIBILITY OF SUCH DAMAGE. 48 * ==================================================================== 49 * 50 * This product includes cryptographic software written by Eric Young 51 * (eay@cryptsoft.com). This product includes software written by Tim 52 * Hudson (tjh@cryptsoft.com). 53 * 54 */ 55 56 /* This is an implementation of the ASN1 Time structure which is: 57 * Time ::= CHOICE { 58 * utcTime UTCTime, 59 * generalTime GeneralizedTime } 60 * written by Steve Henson. 61 */ 62 63 #include <stdio.h> 64 #include <string.h> 65 #include <time.h> 66 67 #include <openssl/asn1t.h> 68 #include <openssl/err.h> 69 70 #include "o_time.h" 71 #include "asn1_locl.h" 72 73 const ASN1_ITEM ASN1_TIME_it = { 74 .itype = ASN1_ITYPE_MSTRING, 75 .utype = B_ASN1_TIME, 76 .templates = NULL, 77 .tcount = 0, 78 .funcs = NULL, 79 .size = sizeof(ASN1_STRING), 80 .sname = "ASN1_TIME", 81 }; 82 83 ASN1_TIME * 84 ASN1_TIME_new(void) 85 { 86 return (ASN1_TIME *)ASN1_item_new(&ASN1_TIME_it); 87 } 88 89 void 90 ASN1_TIME_free(ASN1_TIME *a) 91 { 92 ASN1_item_free((ASN1_VALUE *)a, &ASN1_TIME_it); 93 } 94 95 int 96 ASN1_TIME_to_tm(const ASN1_TIME *s, struct tm *tm) 97 { 98 time_t now; 99 100 if (s != NULL) 101 return ASN1_time_parse(s->data, s->length, tm, 0) != -1; 102 103 time(&now); 104 memset(tm, 0, sizeof(*tm)); 105 106 return gmtime_r(&now, tm) != NULL; 107 } 108 109 int 110 ASN1_TIME_diff(int *pday, int *psec, const ASN1_TIME *from, const ASN1_TIME *to) 111 { 112 struct tm tm_from, tm_to; 113 114 if (!ASN1_TIME_to_tm(from, &tm_from)) 115 return 0; 116 if (!ASN1_TIME_to_tm(to, &tm_to)) 117 return 0; 118 119 return OPENSSL_gmtime_diff(pday, psec, &tm_from, &tm_to); 120 } 121 122 ASN1_TIME * 123 d2i_ASN1_TIME(ASN1_TIME **a, const unsigned char **in, long len) 124 { 125 return (ASN1_TIME *)ASN1_item_d2i((ASN1_VALUE **)a, in, len, 126 &ASN1_TIME_it); 127 } 128 129 int 130 i2d_ASN1_TIME(ASN1_TIME *a, unsigned char **out) 131 { 132 return ASN1_item_i2d((ASN1_VALUE *)a, out, &ASN1_TIME_it); 133 } 134