crypto/asn1/a_utctm.c - third_party/openssl - Git at Google

 /* crypto/asn1/a_utctm.c */
 /* 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 <stdio.h>
 #include <time.h>
 #include "internal/cryptlib.h"
 #include <openssl/asn1.h>
 #include "asn1_locl.h"

 int asn1_utctime_to_tm(struct tm *tm, const ASN1_UTCTIME *d)
 {
     static const int min[8] = { 0, 1, 1, 0, 0, 0, 0, 0 };
     static const int max[8] = { 99, 12, 31, 23, 59, 59, 12, 59 };
     char *a;
     int n, i, l, o;

     if (d->type != V_ASN1_UTCTIME)
         return (0);
     l = d->length;
     a = (char *)d->data;
     o = 0;

     if (l < 11)
         goto err;
     for (i = 0; i < 6; i++) {
         if ((i == 5) && ((a[o] == 'Z') || (a[o] == '+') || (a[o] == '-'))) {
             i++;
             if (tm)
                 tm->tm_sec = 0;
             break;
         }
         if ((a[o] < '0') || (a[o] > '9'))
             goto err;
         n = a[o] - '0';
         if (++o > l)
             goto err;

         if ((a[o] < '0') || (a[o] > '9'))
             goto err;
         n = (n * 10) + a[o] - '0';
         if (++o > l)
             goto err;

         if ((n < min[i]) || (n > max[i]))
             goto err;
         if (tm) {
             switch (i) {
             case 0:
                 tm->tm_year = n < 50 ? n + 100 : n;
                 break;
             case 1:
                 tm->tm_mon = n - 1;
                 break;
             case 2:
                 tm->tm_mday = n;
                 break;
             case 3:
                 tm->tm_hour = n;
                 break;
             case 4:
                 tm->tm_min = n;
                 break;
             case 5:
                 tm->tm_sec = n;
                 break;
             }
         }
     }
     if (a[o] == 'Z')
         o++;
     else if ((a[o] == '+') || (a[o] == '-')) {
         int offsign = a[o] == '-' ? -1 : 1, offset = 0;
         o++;
         if (o + 4 > l)
             goto err;
         for (i = 6; i < 8; i++) {
             if ((a[o] < '0') || (a[o] > '9'))
                 goto err;
             n = a[o] - '0';
             o++;
             if ((a[o] < '0') || (a[o] > '9'))
                 goto err;
             n = (n * 10) + a[o] - '0';
             if ((n < min[i]) || (n > max[i]))
                 goto err;
             if (tm) {
                 if (i == 6)
                     offset = n * 3600;
                 else if (i == 7)
                     offset += n * 60;
             }
             o++;
         }
         if (offset && !OPENSSL_gmtime_adj(tm, 0, offset * offsign))
             return 0;
     }
     return o == l;
  err:
     return 0;
 }

 int ASN1_UTCTIME_check(const ASN1_UTCTIME *d)
 {
     return asn1_utctime_to_tm(NULL, d);
 }

 int ASN1_UTCTIME_set_string(ASN1_UTCTIME *s, const char *str)
 {
     ASN1_UTCTIME t;

     t.type = V_ASN1_UTCTIME;
     t.length = strlen(str);
     t.data = (unsigned char *)str;
     if (ASN1_UTCTIME_check(&t)) {
         if (s != NULL) {
             if (!ASN1_STRING_set((ASN1_STRING *)s,
                                  (unsigned char *)str, t.length))
                 return 0;
             s->type = V_ASN1_UTCTIME;
         }
         return (1);
     } else
         return (0);
 }

 ASN1_UTCTIME *ASN1_UTCTIME_set(ASN1_UTCTIME *s, time_t t)
 {
     return ASN1_UTCTIME_adj(s, t, 0, 0);
 }

 ASN1_UTCTIME *ASN1_UTCTIME_adj(ASN1_UTCTIME *s, time_t t,
                                int offset_day, long offset_sec)
 {
     char *p;
     struct tm *ts;
     struct tm data;
     size_t len = 20;
     int free_s = 0;

     if (s == NULL) {
         s = ASN1_UTCTIME_new();
         if (s == NULL)
             goto err;
         free_s = 1;
     }

     ts = OPENSSL_gmtime(&t, &data);
     if (ts == NULL)
         goto err;

     if (offset_day || offset_sec) {
         if (!OPENSSL_gmtime_adj(ts, offset_day, offset_sec))
             goto err;
     }

     if ((ts->tm_year < 50) || (ts->tm_year >= 150))
         goto err;

     p = (char *)s->data;
     if ((p == NULL) || ((size_t)s->length < len)) {
         p = OPENSSL_malloc(len);
         if (p == NULL) {
             ASN1err(ASN1_F_ASN1_UTCTIME_ADJ, ERR_R_MALLOC_FAILURE);
             goto err;
         }
         OPENSSL_free(s->data);
         s->data = (unsigned char *)p;
     }

     BIO_snprintf(p, len, "%02d%02d%02d%02d%02d%02dZ", ts->tm_year % 100,
                  ts->tm_mon + 1, ts->tm_mday, ts->tm_hour, ts->tm_min,
                  ts->tm_sec);
     s->length = strlen(p);
     s->type = V_ASN1_UTCTIME;
 #ifdef CHARSET_EBCDIC_not
     ebcdic2ascii(s->data, s->data, s->length);
 #endif
     return (s);
  err:
     if (free_s)
         ASN1_UTCTIME_free(s);
     return NULL;
 }

 int ASN1_UTCTIME_cmp_time_t(const ASN1_UTCTIME *s, time_t t)
 {
     struct tm stm, ttm;
     int day, sec;

     if (!asn1_utctime_to_tm(&stm, s))
         return -2;

     if (!OPENSSL_gmtime(&t, &ttm))
         return -2;

     if (!OPENSSL_gmtime_diff(&day, &sec, &ttm, &stm))
         return -2;

     if (day > 0)
         return 1;
     if (day < 0)
         return -1;
     if (sec > 0)
         return 1;
     if (sec < 0)
         return -1;
     return 0;
 }

 int ASN1_UTCTIME_print(BIO *bp, const ASN1_UTCTIME *tm)
 {
     const char *v;
     int gmt = 0;
     int i;
     int y = 0, M = 0, d = 0, h = 0, m = 0, s = 0;

     i = tm->length;
     v = (const char *)tm->data;

     if (i < 10)
         goto err;
     if (v[i - 1] == 'Z')
         gmt = 1;
     for (i = 0; i < 10; i++)
         if ((v[i] > '9') || (v[i] < '0'))
             goto err;
     y = (v[0] - '0') * 10 + (v[1] - '0');
     if (y < 50)
         y += 100;
     M = (v[2] - '0') * 10 + (v[3] - '0');
     if ((M > 12) || (M < 1))
         goto err;
     d = (v[4] - '0') * 10 + (v[5] - '0');
     h = (v[6] - '0') * 10 + (v[7] - '0');
     m = (v[8] - '0') * 10 + (v[9] - '0');
     if (tm->length >= 12 &&
         (v[10] >= '0') && (v[10] <= '9') && (v[11] >= '0') && (v[11] <= '9'))
         s = (v[10] - '0') * 10 + (v[11] - '0');

     if (BIO_printf(bp, "%s %2d %02d:%02d:%02d %d%s",
                    _asn1_mon[M - 1], d, h, m, s, y + 1900,
                    (gmt) ? " GMT" : "") <= 0)
         return (0);
     else
         return (1);
  err:
     BIO_write(bp, "Bad time value", 14);
     return (0);
 }
	/* crypto/asn1/a_utctm.c */
	/* 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 <stdio.h>
	#include <time.h>
	#include "internal/cryptlib.h"
	#include <openssl/asn1.h>
	#include "asn1_locl.h"

	int asn1_utctime_to_tm(struct tm tm, const ASN1_UTCTIME d)
	{
	static const int min[8] = { 0, 1, 1, 0, 0, 0, 0, 0 };
	static const int max[8] = { 99, 12, 31, 23, 59, 59, 12, 59 };
	char *a;
	int n, i, l, o;

	if (d->type != V_ASN1_UTCTIME)
	return (0);
	l = d->length;
	a = (char *)d->data;
	o = 0;

	if (l < 11)
	goto err;
	for (i = 0; i < 6; i++) {
	if ((i == 5) && ((a[o] == 'Z') \|\| (a[o] == '+') \|\| (a[o] == '-'))) {
	i++;
	if (tm)
	tm->tm_sec = 0;
	break;
	}
	if ((a[o] < '0') \|\| (a[o] > '9'))
	goto err;
	n = a[o] - '0';
	if (++o > l)
	goto err;

	if ((a[o] < '0') \|\| (a[o] > '9'))
	goto err;
	n = (n * 10) + a[o] - '0';
	if (++o > l)
	goto err;

	if ((n < min[i]) \|\| (n > max[i]))
	goto err;
	if (tm) {
	switch (i) {
	case 0:
	tm->tm_year = n < 50 ? n + 100 : n;
	break;
	case 1:
	tm->tm_mon = n - 1;
	break;
	case 2:
	tm->tm_mday = n;
	break;
	case 3:
	tm->tm_hour = n;
	break;
	case 4:
	tm->tm_min = n;
	break;
	case 5:
	tm->tm_sec = n;
	break;
	}
	}
	}
	if (a[o] == 'Z')
	o++;
	else if ((a[o] == '+') \|\| (a[o] == '-')) {
	int offsign = a[o] == '-' ? -1 : 1, offset = 0;
	o++;
	if (o + 4 > l)
	goto err;
	for (i = 6; i < 8; i++) {
	if ((a[o] < '0') \|\| (a[o] > '9'))
	goto err;
	n = a[o] - '0';
	o++;
	if ((a[o] < '0') \|\| (a[o] > '9'))
	goto err;
	n = (n * 10) + a[o] - '0';
	if ((n < min[i]) \|\| (n > max[i]))
	goto err;
	if (tm) {
	if (i == 6)
	offset = n * 3600;
	else if (i == 7)
	offset += n * 60;
	}
	o++;
	}
	if (offset && !OPENSSL_gmtime_adj(tm, 0, offset * offsign))
	return 0;
	}
	return o == l;
	err:
	return 0;
	}

	int ASN1_UTCTIME_check(const ASN1_UTCTIME *d)
	{
	return asn1_utctime_to_tm(NULL, d);
	}

	int ASN1_UTCTIME_set_string(ASN1_UTCTIME s, const char str)
	{
	ASN1_UTCTIME t;

	t.type = V_ASN1_UTCTIME;
	t.length = strlen(str);
	t.data = (unsigned char *)str;
	if (ASN1_UTCTIME_check(&t)) {
	if (s != NULL) {
	if (!ASN1_STRING_set((ASN1_STRING *)s,
	(unsigned char *)str, t.length))
	return 0;
	s->type = V_ASN1_UTCTIME;
	}
	return (1);
	} else
	return (0);
	}

	ASN1_UTCTIME ASN1_UTCTIME_set(ASN1_UTCTIME s, time_t t)
	{
	return ASN1_UTCTIME_adj(s, t, 0, 0);
	}

	ASN1_UTCTIME ASN1_UTCTIME_adj(ASN1_UTCTIME s, time_t t,
	int offset_day, long offset_sec)
	{
	char *p;
	struct tm *ts;
	struct tm data;
	size_t len = 20;
	int free_s = 0;

	if (s == NULL) {
	s = ASN1_UTCTIME_new();
	if (s == NULL)
	goto err;
	free_s = 1;
	}

	ts = OPENSSL_gmtime(&t, &data);
	if (ts == NULL)
	goto err;

	if (offset_day \|\| offset_sec) {
	if (!OPENSSL_gmtime_adj(ts, offset_day, offset_sec))
	goto err;
	}

	if ((ts->tm_year < 50) \|\| (ts->tm_year >= 150))
	goto err;

	p = (char *)s->data;
	if ((p == NULL) \|\| ((size_t)s->length < len)) {
	p = OPENSSL_malloc(len);
	if (p == NULL) {
	ASN1err(ASN1_F_ASN1_UTCTIME_ADJ, ERR_R_MALLOC_FAILURE);
	goto err;
	}
	OPENSSL_free(s->data);
	s->data = (unsigned char *)p;
	}

	BIO_snprintf(p, len, "%02d%02d%02d%02d%02d%02dZ", ts->tm_year % 100,
	ts->tm_mon + 1, ts->tm_mday, ts->tm_hour, ts->tm_min,
	ts->tm_sec);
	s->length = strlen(p);
	s->type = V_ASN1_UTCTIME;
	#ifdef CHARSET_EBCDIC_not
	ebcdic2ascii(s->data, s->data, s->length);
	#endif
	return (s);
	err:
	if (free_s)
	ASN1_UTCTIME_free(s);
	return NULL;
	}

	int ASN1_UTCTIME_cmp_time_t(const ASN1_UTCTIME *s, time_t t)
	{
	struct tm stm, ttm;
	int day, sec;

	if (!asn1_utctime_to_tm(&stm, s))
	return -2;

	if (!OPENSSL_gmtime(&t, &ttm))
	return -2;

	if (!OPENSSL_gmtime_diff(&day, &sec, &ttm, &stm))
	return -2;

	if (day > 0)
	return 1;
	if (day < 0)
	return -1;
	if (sec > 0)
	return 1;
	if (sec < 0)
	return -1;
	return 0;
	}

	int ASN1_UTCTIME_print(BIO bp, const ASN1_UTCTIME tm)
	{
	const char *v;
	int gmt = 0;
	int i;
	int y = 0, M = 0, d = 0, h = 0, m = 0, s = 0;

	i = tm->length;
	v = (const char *)tm->data;

	if (i < 10)
	goto err;
	if (v[i - 1] == 'Z')
	gmt = 1;
	for (i = 0; i < 10; i++)
	if ((v[i] > '9') \|\| (v[i] < '0'))
	goto err;
	y = (v[0] - '0') * 10 + (v[1] - '0');
	if (y < 50)
	y += 100;
	M = (v[2] - '0') * 10 + (v[3] - '0');
	if ((M > 12) \|\| (M < 1))
	goto err;
	d = (v[4] - '0') * 10 + (v[5] - '0');
	h = (v[6] - '0') * 10 + (v[7] - '0');
	m = (v[8] - '0') * 10 + (v[9] - '0');
	if (tm->length >= 12 &&
	(v[10] >= '0') && (v[10] <= '9') && (v[11] >= '0') && (v[11] <= '9'))
	s = (v[10] - '0') * 10 + (v[11] - '0');

	if (BIO_printf(bp, "%s %2d %02d:%02d:%02d %d%s",
	_asn1_mon[M - 1], d, h, m, s, y + 1900,
	(gmt) ? " GMT" : "") <= 0)
	return (0);
	else
	return (1);
	err:
	BIO_write(bp, "Bad time value", 14);
	return (0);
	}