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+/* crypto/asn1/a_time.c */
+/* ====================================================================
+ * Copyright (c) 1999 The OpenSSL Project. All rights reserved.
+ *
+ * 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 above 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 acknowledgment:
+ * "This product includes software developed by the OpenSSL Project
+ * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ * endorse or promote products derived from this software without
+ * prior written permission. For written permission, please contact
+ * licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ * nor may "OpenSSL" appear in their names without prior written
+ * permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ * acknowledgment:
+ * "This product includes software developed by the OpenSSL Project
+ * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED 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 OpenSSL PROJECT OR
+ * ITS 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.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com). This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+
+
+/* This is an implementation of the ASN1 Time structure which is:
+ * Time ::= CHOICE {
+ * utcTime UTCTime,
+ * generalTime GeneralizedTime }
+ * written by Steve Henson.
+ */
+
+#include <stdio.h>
+#include <time.h>
+#include "cryptlib.h"
+#include "o_time.h"
+#include <openssl/asn1t.h>
+
+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));
+ ASN1err(ASN1_F_I2D_ASN1_TIME,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)
+ {
+ 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(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;
+ }