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authorAdam Langley <agl@chromium.org>2014-06-20 23:00:00 +0400
committerAdam Langley <agl@chromium.org>2014-06-21 00:17:32 +0400
commit95c29f3cd1f6c08c6c0927868683392eea727ccb (patch)
tree012767320ced9abca61472a4daa4c4a56b7ebe2b /crypto/asn1/a_time.c
Inital import.
Initial fork from f2d678e6e89b6508147086610e985d4e8416e867 (1.0.2 beta). (This change contains substantial changes from the original and effectively starts a new history.)
Diffstat (limited to 'crypto/asn1/a_time.c')
-rw-r--r--crypto/asn1/a_time.c233
1 files changed, 233 insertions, 0 deletions
diff --git a/crypto/asn1/a_time.c b/crypto/asn1/a_time.c
new file mode 100644
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+++ b/crypto/asn1/a_time.c
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+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to. The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code. The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * "This product includes cryptographic software written by
+ * Eric Young (eay@cryptsoft.com)"
+ * The word 'cryptographic' can be left out if the rouines from the library
+ * being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ * the apps directory (application code) you must include an acknowledgement:
+ * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed. i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/asn1.h>
+
+#include <openssl/asn1t.h>
+#include <openssl/buf.h>
+#include <openssl/err.h>
+#include <openssl/mem.h>
+#include <openssl/time_support.h>
+
+#include "asn1_locl.h"
+
+
+/* This is an implementation of the ASN1 Time structure which is:
+ * Time ::= CHOICE {
+ * utcTime UTCTime,
+ * generalTime GeneralizedTime }
+ * written by Steve Henson.
+ */
+
+IMPLEMENT_ASN1_MSTRING(ASN1_TIME, B_ASN1_TIME)
+
+IMPLEMENT_ASN1_FUNCTIONS(ASN1_TIME)
+
+#if 0
+int i2d_ASN1_TIME(ASN1_TIME *a, unsigned char **pp)
+ {
+#ifdef CHARSET_EBCDIC
+ /* KLUDGE! We convert to ascii before writing DER */
+ char tmp[24];
+ ASN1_STRING tmpstr;
+
+ if(a->type == V_ASN1_UTCTIME || a->type == V_ASN1_GENERALIZEDTIME) {
+ int len;
+
+ tmpstr = *(ASN1_STRING *)a;
+ len = tmpstr.length;
+ ebcdic2ascii(tmp, tmpstr.data, (len >= sizeof tmp) ? sizeof tmp : len);
+ tmpstr.data = tmp;
+ a = (ASN1_GENERALIZEDTIME *) &tmpstr;
+ }
+#endif
+ if(a->type == V_ASN1_UTCTIME || a->type == V_ASN1_GENERALIZEDTIME)
+ return(i2d_ASN1_bytes((ASN1_STRING *)a,pp,
+ a->type ,V_ASN1_UNIVERSAL));
+ OPENSSL_PUT_ERROR(ASN1, XXX, ASN1_R_EXPECTING_A_TIME);
+ return -1;
+ }
+#endif
+
+
+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)
+ {
+ OPENSSL_PUT_ERROR(ASN1, 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(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(ASN1_TIME *t, ASN1_GENERALIZEDTIME **out)
+ {
+ ASN1_GENERALIZEDTIME *ret;
+ char *str;
+ int newlen;
+
+ if (!ASN1_TIME_check(t)) return NULL;
+
+ if (!out || !*out)
+ {
+ if (!(ret = ASN1_GENERALIZEDTIME_new ()))
+ return NULL;
+ if (out) *out = ret;
+ }
+ else ret = *out;
+
+ /* If already GeneralizedTime just copy across */
+ if (t->type == V_ASN1_GENERALIZEDTIME)
+ {
+ if(!ASN1_STRING_set(ret, t->data, t->length))
+ return NULL;
+ return ret;
+ }
+
+ /* grow the string */
+ if (!ASN1_STRING_set(ret, NULL, t->length + 2))
+ return NULL;
+ /* 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') BUF_strlcpy(str, "19", newlen);
+ else BUF_strlcpy(str, "20", newlen);
+
+ BUF_strlcat(str, (char *)t->data, newlen);
+
+ return ret;
+ }
+
+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);
+ }