diff options
Diffstat (limited to 'openssl-1.1.0h/crypto/asn1/a_time.c')
| -rw-r--r-- | openssl-1.1.0h/crypto/asn1/a_time.c | 170 |
1 files changed, 170 insertions, 0 deletions
diff --git a/openssl-1.1.0h/crypto/asn1/a_time.c b/openssl-1.1.0h/crypto/asn1/a_time.c new file mode 100644 index 0000000..46f539c --- /dev/null +++ b/openssl-1.1.0h/crypto/asn1/a_time.c @@ -0,0 +1,170 @@ +/* + * Copyright 1999-2016 The OpenSSL Project Authors. All Rights Reserved. + * + * Licensed under the OpenSSL license (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 + */ + +/*- + * This is an implementation of the ASN1 Time structure which is: + * Time ::= CHOICE { + * utcTime UTCTime, + * generalTime GeneralizedTime } + */ + +#include <stdio.h> +#include <time.h> +#include "internal/cryptlib.h" +#include <openssl/asn1t.h> +#include "asn1_locl.h" + +IMPLEMENT_ASN1_MSTRING(ASN1_TIME, B_ASN1_TIME) + +IMPLEMENT_ASN1_FUNCTIONS(ASN1_TIME) + +ASN1_TIME *ASN1_TIME_set(ASN1_TIME *s, time_t t) +{ + return ASN1_TIME_adj(s, t, 0, 0); +} + +ASN1_TIME *ASN1_TIME_adj(ASN1_TIME *s, time_t t, + int offset_day, long offset_sec) +{ + struct tm *ts; + struct tm data; + + ts = OPENSSL_gmtime(&t, &data); + if (ts == NULL) { + ASN1err(ASN1_F_ASN1_TIME_ADJ, ASN1_R_ERROR_GETTING_TIME); + return NULL; + } + if (offset_day || offset_sec) { + if (!OPENSSL_gmtime_adj(ts, offset_day, offset_sec)) + return NULL; + } + if ((ts->tm_year >= 50) && (ts->tm_year < 150)) + return ASN1_UTCTIME_adj(s, t, offset_day, offset_sec); + return ASN1_GENERALIZEDTIME_adj(s, t, offset_day, offset_sec); +} + +int ASN1_TIME_check(const ASN1_TIME *t) +{ + if (t->type == V_ASN1_GENERALIZEDTIME) + return ASN1_GENERALIZEDTIME_check(t); + else if (t->type == V_ASN1_UTCTIME) + return ASN1_UTCTIME_check(t); + return 0; +} + +/* Convert an ASN1_TIME structure to GeneralizedTime */ +ASN1_GENERALIZEDTIME *ASN1_TIME_to_generalizedtime(const ASN1_TIME *t, + ASN1_GENERALIZEDTIME **out) +{ + ASN1_GENERALIZEDTIME *ret = NULL; + char *str; + int newlen; + + if (!ASN1_TIME_check(t)) + return NULL; + + if (out == NULL || *out == NULL) { + if ((ret = ASN1_GENERALIZEDTIME_new()) == NULL) + goto err; + } else + ret = *out; + + /* If already GeneralizedTime just copy across */ + if (t->type == V_ASN1_GENERALIZEDTIME) { + if (!ASN1_STRING_set(ret, t->data, t->length)) + goto err; + goto done; + } + + /* grow the string */ + if (!ASN1_STRING_set(ret, NULL, t->length + 2)) + goto err; + /* ASN1_STRING_set() allocated 'len + 1' bytes. */ + newlen = t->length + 2 + 1; + str = (char *)ret->data; + /* Work out the century and prepend */ + if (t->data[0] >= '5') + OPENSSL_strlcpy(str, "19", newlen); + else + OPENSSL_strlcpy(str, "20", newlen); + + OPENSSL_strlcat(str, (const char *)t->data, newlen); + + done: + if (out != NULL && *out == NULL) + *out = ret; + return ret; + + err: + if (out == NULL || *out != ret) + ASN1_GENERALIZEDTIME_free(ret); + return NULL; +} + + +int ASN1_TIME_set_string(ASN1_TIME *s, const char *str) +{ + ASN1_TIME t; + + t.length = strlen(str); + t.data = (unsigned char *)str; + t.flags = 0; + + t.type = V_ASN1_UTCTIME; + + if (!ASN1_TIME_check(&t)) { + t.type = V_ASN1_GENERALIZEDTIME; + if (!ASN1_TIME_check(&t)) + return 0; + } + + if (s && !ASN1_STRING_copy((ASN1_STRING *)s, (ASN1_STRING *)&t)) + return 0; + + return 1; +} + +static int asn1_time_to_tm(struct tm *tm, const ASN1_TIME *t) +{ + if (t == NULL) { + time_t now_t; + time(&now_t); + if (OPENSSL_gmtime(&now_t, tm)) + return 1; + return 0; + } + + if (t->type == V_ASN1_UTCTIME) + return asn1_utctime_to_tm(tm, t); + else if (t->type == V_ASN1_GENERALIZEDTIME) + return asn1_generalizedtime_to_tm(tm, t); + + return 0; +} + +int ASN1_TIME_diff(int *pday, int *psec, + const ASN1_TIME *from, const ASN1_TIME *to) +{ + struct tm tm_from, tm_to; + if (!asn1_time_to_tm(&tm_from, from)) + return 0; + if (!asn1_time_to_tm(&tm_to, to)) + return 0; + return OPENSSL_gmtime_diff(pday, psec, &tm_from, &tm_to); +} + +int ASN1_TIME_print(BIO *bp, const ASN1_TIME *tm) +{ + if (tm->type == V_ASN1_UTCTIME) + return ASN1_UTCTIME_print(bp, tm); + if (tm->type == V_ASN1_GENERALIZEDTIME) + return ASN1_GENERALIZEDTIME_print(bp, tm); + BIO_write(bp, "Bad time value", 14); + return (0); +} |