1 /* crypto/asn1/a_utctm.c */

     2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)

     3  * All rights reserved.

     4  *

     5  * This package is an SSL implementation written

     6  * by Eric Young (eay@cryptsoft.com).

     7  * The implementation was written so as to conform with Netscapes SSL.

     8  * 

     9  * This library is free for commercial and non-commercial use as long as

    10  * the following conditions are aheared to.  The following conditions

    11  * apply to all code found in this distribution, be it the RC4, RSA,

    12  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation

    13  * included with this distribution is covered by the same copyright terms

    14  * except that the holder is Tim Hudson (tjh@cryptsoft.com).

    15  * 

    16  * Copyright remains Eric Young's, and as such any Copyright notices in

    17  * the code are not to be removed.

    18  * If this package is used in a product, Eric Young should be given attribution

    19  * as the author of the parts of the library used.

    20  * This can be in the form of a textual message at program startup or

    21  * in documentation (online or textual) provided with the package.

    22  * 

    23  * Redistribution and use in source and binary forms, with or without

    24  * modification, are permitted provided that the following conditions

    25  * are met:

    26  * 1. Redistributions of source code must retain the copyright

    27  *    notice, this list of conditions and the following disclaimer.

    28  * 2. Redistributions in binary form must reproduce the above copyright

    29  *    notice, this list of conditions and the following disclaimer in the

    30  *    documentation and/or other materials provided with the distribution.

    31  * 3. All advertising materials mentioning features or use of this software

    32  *    must display the following acknowledgement:

    33  *    "This product includes cryptographic software written by

    34  *     Eric Young (eay@cryptsoft.com)"

    35  *    The word 'cryptographic' can be left out if the rouines from the library

    36  *    being used are not cryptographic related :-).

    37  * 4. If you include any Windows specific code (or a derivative thereof) from 

    38  *    the apps directory (application code) you must include an acknowledgement:

    39  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"

    40  * 

    41  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND

    42  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

    43  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

    44  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE

    45  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

    46  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS

    47  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

    48  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

    49  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY

    50  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF

    51  * SUCH DAMAGE.

    52  * 

    53  * The licence and distribution terms for any publically available version or

    54  * derivative of this code cannot be changed.  i.e. this code cannot simply be

    55  * copied and put under another distribution licence

    56  * [including the GNU Public Licence.]

    57  */

    58 /*

    59  © Portions copyright (c) 2006 Nokia Corporation.  All rights reserved.

    60  */

    61 

    62 #include <stdio.h>

    63 #include <time.h>

    64 #include "cryptlib.h"

    65 #include "o_time.h"

    66 #include <openssl/asn1.h>

    67 #if (defined(SYMBIAN) && (defined(__WINSCW__) || defined(__WINS__)))

    68 #include "libcrypto_wsd_macros.h"

    69 #include "libcrypto_wsd.h"

    70 #endif

    71 

    72 #if 0

    73 EXPORT_C int i2d_ASN1_UTCTIME(ASN1_UTCTIME *a, unsigned char **pp)

    74 	{

    75 #ifndef CHARSET_EBCDIC

    76 	return(i2d_ASN1_bytes((ASN1_STRING *)a,pp,

    77 		V_ASN1_UTCTIME,V_ASN1_UNIVERSAL));

    78 #else

    79 	/* KLUDGE! We convert to ascii before writing DER */

    80 	int len;

    81 	char tmp[24];

    82 	ASN1_STRING x = *(ASN1_STRING *)a;

    83 

    84 	len = x.length;

    85 	ebcdic2ascii(tmp, x.data, (len >= sizeof tmp) ? sizeof tmp : len);

    86 	x.data = tmp;

    87 	return i2d_ASN1_bytes(&x, pp, V_ASN1_UTCTIME,V_ASN1_UNIVERSAL);

    88 #endif

    89 	}

    90 

    91 

    92 EXPORT_C ASN1_UTCTIME *d2i_ASN1_UTCTIME(ASN1_UTCTIME **a, unsigned char **pp,

    93 	     long length)

    94 	{

    95 	ASN1_UTCTIME *ret=NULL;

    96 

    97 	ret=(ASN1_UTCTIME *)d2i_ASN1_bytes((ASN1_STRING **)a,pp,length,

    98 		V_ASN1_UTCTIME,V_ASN1_UNIVERSAL);

    99 	if (ret == NULL)

   100 		{

   101 		ASN1err(ASN1_F_D2I_ASN1_UTCTIME,ERR_R_NESTED_ASN1_ERROR);

   102 		return(NULL);

   103 		}

   104 #ifdef CHARSET_EBCDIC

   105 	ascii2ebcdic(ret->data, ret->data, ret->length);

   106 #endif

   107 	if (!ASN1_UTCTIME_check(ret))

   108 		{

   109 		ASN1err(ASN1_F_D2I_ASN1_UTCTIME,ASN1_R_INVALID_TIME_FORMAT);

   110 		goto err;

   111 		}

   112 

   113 	return(ret);

   114 err:

   115 	if ((ret != NULL) && ((a == NULL) || (*a != ret)))

   116 		M_ASN1_UTCTIME_free(ret);

   117 	return(NULL);

   118 	}

   119 

   120 #endif

   121 

   122 

   123 

   124 

   125 EXPORT_C int ASN1_UTCTIME_check(ASN1_UTCTIME *d)

   126 	{

   127 #ifdef EMULATOR	

   128 	static int min[8]={ 0, 1, 1, 0, 0, 0, 0, 0};

   129 	static int max[8]={99,12,31,23,59,59,12,59};

   130 #else	

   131 	static const int min[8]={ 0, 1, 1, 0, 0, 0, 0, 0};

   132 	static const int max[8]={99,12,31,23,59,59,12,59};

   133 #endif

   134 	char *a;

   135 	int n,i,l,o;

   136 

   137 	if (d->type != V_ASN1_UTCTIME) return(0);

   138 	l=d->length;

   139 	a=(char *)d->data;

   140 	o=0;

   141 

   142 	if (l < 11) goto err;

   143 	for (i=0; i<6; i++)

   144 		{

   145 		if ((i == 5) && ((a[o] == 'Z') ||

   146 			(a[o] == '+') || (a[o] == '-')))

   147 			{ i++; break; }

   148 		if ((a[o] < '0') || (a[o] > '9')) goto err;

   149 		n= a[o]-'0';

   150 		if (++o > l) goto err;

   151 

   152 		if ((a[o] < '0') || (a[o] > '9')) goto err;

   153 		n=(n*10)+ a[o]-'0';

   154 		if (++o > l) goto err;

   155 

   156 		if ((n < min[i]) || (n > max[i])) goto err;

   157 		}

   158 	if (a[o] == 'Z')

   159 		o++;

   160 	else if ((a[o] == '+') || (a[o] == '-'))

   161 		{

   162 		o++;

   163 		if (o+4 > l) goto err;

   164 		for (i=6; i<8; i++)

   165 			{

   166 			if ((a[o] < '0') || (a[o] > '9')) goto err;

   167 			n= a[o]-'0';

   168 			o++;

   169 			if ((a[o] < '0') || (a[o] > '9')) goto err;

   170 			n=(n*10)+ a[o]-'0';

   171 			if ((n < min[i]) || (n > max[i])) goto err;

   172 			o++;

   173 			}

   174 		}

   175 	return(o == l);

   176 err:

   177 	return(0);

   178 	}

   179 

   180 EXPORT_C int ASN1_UTCTIME_set_string(ASN1_UTCTIME *s, const char *str)

   181 	{

   182 	ASN1_UTCTIME t;

   183 

   184 	t.type=V_ASN1_UTCTIME;

   185 	t.length=strlen(str);

   186 	t.data=(unsigned char *)str;

   187 	if (ASN1_UTCTIME_check(&t))

   188 		{

   189 		if (s != NULL)

   190 			{

   191 			if (!ASN1_STRING_set((ASN1_STRING *)s,

   192 				(unsigned char *)str,t.length))

   193 				return 0;

   194 			s->type = V_ASN1_UTCTIME;

   195 			}

   196 		return(1);

   197 		}

   198 	else

   199 		return(0);

   200 	}

   201 

   202 EXPORT_C ASN1_UTCTIME *ASN1_UTCTIME_set(ASN1_UTCTIME *s, time_t t)

   203 	{

   204 	char *p;

   205 	struct tm *ts;

   206 	struct tm data;

   207 	size_t len = 20;

   208 

   209 	if (s == NULL)

   210 		s=M_ASN1_UTCTIME_new();

   211 	if (s == NULL)

   212 		return(NULL);

   213 

   214 	ts=OPENSSL_gmtime(&t, &data);

   215 	if (ts == NULL)

   216 		return(NULL);

   217 

   218 	p=(char *)s->data;

   219 	if ((p == NULL) || ((size_t)s->length < len))

   220 		{

   221 		p=OPENSSL_malloc(len);

   222 		if (p == NULL)

   223 			{

   224 			ASN1err(ASN1_F_ASN1_UTCTIME_SET,ERR_R_MALLOC_FAILURE);

   225 			return(NULL);

   226 			}

   227 		if (s->data != NULL)

   228 			OPENSSL_free(s->data);

   229 		s->data=(unsigned char *)p;

   230 		}

   231 

   232 	BIO_snprintf(p,len,"%02d%02d%02d%02d%02d%02dZ",ts->tm_year%100,

   233 		     ts->tm_mon+1,ts->tm_mday,ts->tm_hour,ts->tm_min,ts->tm_sec);

   234 	s->length=strlen(p);

   235 	s->type=V_ASN1_UTCTIME;

   236 #ifdef CHARSET_EBCDIC_not

   237 	ebcdic2ascii(s->data, s->data, s->length);

   238 #endif

   239 	return(s);

   240 	}

   241 

   242 

   243 EXPORT_C int ASN1_UTCTIME_cmp_time_t(const ASN1_UTCTIME *s, time_t t)

   244 	{

   245 	struct tm *tm;

   246 	struct tm data;

   247 	int offset;

   248 	int year;

   249 

   250 #define g2(p) (((p)[0]-'0')*10+(p)[1]-'0')

   251 

   252 	if (s->data[12] == 'Z')

   253 		offset=0;

   254 	else

   255 		{

   256 		offset = g2(s->data+13)*60+g2(s->data+15);

   257 		if (s->data[12] == '-')

   258 			offset = -offset;

   259 		}

   260 

   261 	t -= offset*60; /* FIXME: may overflow in extreme cases */

   262 

   263 	tm = OPENSSL_gmtime(&t, &data);

   264 	

   265 #define return_cmp(a,b) if ((a)<(b)) return -1; else if ((a)>(b)) return 1

   266 	year = g2(s->data);

   267 	if (year < 50)

   268 		year += 100;

   269 	return_cmp(year,              tm->tm_year);

   270 	return_cmp(g2(s->data+2) - 1, tm->tm_mon);

   271 	return_cmp(g2(s->data+4),     tm->tm_mday);

   272 	return_cmp(g2(s->data+6),     tm->tm_hour);

   273 	return_cmp(g2(s->data+8),     tm->tm_min);

   274 	return_cmp(g2(s->data+10),    tm->tm_sec);

   275 #undef g2

   276 #undef return_cmp

   277 

   278 	return 0;

   279 	}

   280 

   281 

   282 #if 0

   283 EXPORT_C time_t ASN1_UTCTIME_get(const ASN1_UTCTIME *s)

   284 	{

   285 	struct tm tm;

   286 	int offset;

   287 

   288 	memset(&tm,'\0',sizeof tm);

   289 

   290 #define g2(p) (((p)[0]-'0')*10+(p)[1]-'0')

   291 	tm.tm_year=g2(s->data);

   292 	if(tm.tm_year < 50)

   293 		tm.tm_year+=100;

   294 	tm.tm_mon=g2(s->data+2)-1;

   295 	tm.tm_mday=g2(s->data+4);

   296 	tm.tm_hour=g2(s->data+6);

   297 	tm.tm_min=g2(s->data+8);

   298 	tm.tm_sec=g2(s->data+10);

   299 	if(s->data[12] == 'Z')

   300 		offset=0;

   301 	else

   302 		{

   303 		offset=g2(s->data+13)*60+g2(s->data+15);

   304 		if(s->data[12] == '-')

   305 			offset= -offset;

   306 		}

   307 #undef g2

   308 

   309 	return mktime(&tm)-offset*60; /* FIXME: mktime assumes the current timezone

   310 	                               * instead of UTC, and unless we rewrite OpenSSL

   311 				       * in Lisp we cannot locally change the timezone

   312 				       * without possibly interfering with other parts

   313 	                               * of the program. timegm, which uses UTC, is

   314 				       * non-standard.

   315 	                               * Also time_t is inappropriate for general

   316 	                               * UTC times because it may a 32 bit type. */

   317 	}

   318 #endif