[thirdparty/openssl.git] / crypto / asn1 / asn1_lib.c

/* crypto/asn1/asn1_lib.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 <limits.h>
#include "cryptlib.h"
#include <openssl/asn1.h>
#include <openssl/asn1_mac.h>

static int asn1_get_length(const unsigned char **pp, int *inf, size_t *rl,
			   size_t max);
static void asn1_put_length(unsigned char **pp, int length);
const char ASN1_version[]="ASN.1" OPENSSL_VERSION_PTEXT;

static int _asn1_check_infinite_end(const unsigned char **p, long len)
	{
	/* If there is 0 or 1 byte left, the length check should pick
	 * things up */
	if (len <= 0)
		return(1);
	else if ((len >= 2) && ((*p)[0] == 0) && ((*p)[1] == 0))
		{
		(*p)+=2;
		return(1);
		}
	return(0);
	}

int ASN1_check_infinite_end(unsigned char **p, size_t len)
	{
	return _asn1_check_infinite_end((const unsigned char **)p, len);
	}

int ASN1_const_check_infinite_end(const unsigned char **p, size_t len)
	{
	return _asn1_check_infinite_end(p, len);
	}


int ASN1_get_object(const unsigned char **pp, size_t *plength, int *ptag,
		    int *pclass, size_t omax)
	{
	int i,ret;
	long l;
	const unsigned char *p= *pp;
	int tag,xclass,inf;
	size_t max=omax;

	if (!max)
	    goto err;

	ret=(*p&V_ASN1_CONSTRUCTED);
	xclass=(*p&V_ASN1_PRIVATE);
	i= *p&V_ASN1_PRIMITIVE_TAG;
	if (i == V_ASN1_PRIMITIVE_TAG)
		{		/* high-tag */
		p++;
		if (--max == 0) goto err;
		l=0;
		while (*p&0x80)
			{
			l<<=7L;
			l|= *(p++)&0x7f;
			if (--max == 0) goto err;
			if (l > (INT_MAX >> 7L)) goto err;
			}
		l<<=7L;
		l|= *(p++)&0x7f;
		tag=(int)l;
		if (--max == 0) goto err;
		}
	else
		{ 
		tag=i;
		p++;
		if (--max == 0) goto err;
		}
	*ptag=tag;
	*pclass=xclass;
	if (!asn1_get_length(&p,&inf,plength,(int)max)) goto err;

#if 0
	fprintf(stderr,"p=%d + *plength=%ld > omax=%ld + *pp=%d  (%d > %d)\n", 
		(int)p,*plength,omax,(int)*pp,(int)(p+ *plength),
		(int)(omax+ *pp));

#endif
	if (*plength > (omax - (p - *pp)))
		{
		ASN1err(ASN1_F_ASN1_GET_OBJECT,ASN1_R_TOO_LONG);
		/* Set this so that even if things are not long enough
		 * the values are set correctly */
		ret|=0x80;
		}
	*pp=p;
	return(ret|inf);
err:
	ASN1err(ASN1_F_ASN1_GET_OBJECT,ASN1_R_HEADER_TOO_LONG);
	return(0x80);
	}

static int asn1_get_length(const unsigned char **pp, int *inf, size_t *rl,
			   size_t max)
	{
	const unsigned char *p= *pp;
	unsigned long ret=0;
	unsigned int i;

	if (max-- < 1) return(0);
	if (*p == 0x80)
		{
		*inf=1;
		ret=0;
		p++;
		}
	else
		{
		*inf=0;
		i= *p&0x7f;
		if (*(p++) & 0x80)
			{
			if (i > sizeof(long))
				return 0;
			if (max-- == 0) return(0);
			while (i-- > 0)
				{
				ret<<=8L;
				ret|= *(p++);
				if (max-- == 0) return(0);
				}
			}
		else
			ret=i;
		}
	if (ret > LONG_MAX)
		return 0;
	*pp=p;
	*rl=(long)ret;
	return(1);
	}

/* class 0 is constructed
 * constructed == 2 for indefinite length constructed */
void ASN1_put_object(unsigned char **pp, int constructed, size_t length,
		     int tag, int xclass)
	{
	unsigned char *p= *pp;
	int i, ttag;

	i=(constructed)?V_ASN1_CONSTRUCTED:0;
	i|=(xclass&V_ASN1_PRIVATE);
	if (tag < 31)
		*(p++)=i|(tag&V_ASN1_PRIMITIVE_TAG);
	else
		{
		*(p++)=i|V_ASN1_PRIMITIVE_TAG;
		for(i = 0, ttag = tag; ttag > 0; i++) ttag >>=7;
		ttag = i;
		while(i-- > 0)
			{
			p[i] = tag & 0x7f;
			if(i != (ttag - 1)) p[i] |= 0x80;
			tag >>= 7;
			}
		p += ttag;
		}
	if (constructed == 2)
		*(p++)=0x80;
	else
		asn1_put_length(&p,length);
	*pp=p;
	}

int ASN1_put_eoc(unsigned char **pp)
	{
	unsigned char *p = *pp;
	*p++ = 0;
	*p++ = 0;
	*pp = p;
	return 2;
	}

static void asn1_put_length(unsigned char **pp, int length)
	{
	unsigned char *p= *pp;
	int i,l;
	if (length <= 127)
		*(p++)=(unsigned char)length;
	else
		{
		l=length;
		for (i=0; l > 0; i++)
			l>>=8;
		*(p++)=i|0x80;
		l=i;
		while (i-- > 0)
			{
			p[i]=length&0xff;
			length>>=8;
			}
		p+=l;
		}
	*pp=p;
	}

size_t ASN1_object_size(int constructed, size_t length, int tag)
	{
	int ret;

	ret=length;
	ret++;
	if (tag >= 31)
		{
		while (tag > 0)
			{
			tag>>=7;
			ret++;
			}
		}
	if (constructed == 2)
		return ret + 3;
	ret++;
	if (length > 127)
		{
		while (length > 0)
			{
			length>>=8;
			ret++;
			}
		}
	return(ret);
	}

static int _asn1_Finish(ASN1_const_CTX *c)
	{
	if ((c->inf == (1|V_ASN1_CONSTRUCTED)) && (!c->eos))
		{
		if (!ASN1_const_check_infinite_end(&c->p,c->slen))
			{
			c->error=ERR_R_MISSING_ASN1_EOS;
			return(0);
			}
		}
	if (	((c->slen != 0) && !(c->inf & 1)) ||
		((c->slen < 0) && (c->inf & 1)))
		{
		c->error=ERR_R_ASN1_LENGTH_MISMATCH;
		return(0);
		}
	return(1);
	}

int asn1_Finish(ASN1_CTX *c)
	{
	return _asn1_Finish((ASN1_const_CTX *)c);
	}

int asn1_const_Finish(ASN1_const_CTX *c)
	{
	return _asn1_Finish(c);
	}

int asn1_GetSequence(ASN1_const_CTX *c, size_t *length)
	{
	const unsigned char *q;

	q=c->p;
	c->inf=ASN1_get_object(&(c->p),&(c->slen),&(c->tag),&(c->xclass),
		*length);
	if (c->inf & 0x80)
		{
		c->error=ERR_R_BAD_GET_ASN1_OBJECT_CALL;
		return(0);
		}
	if (c->tag != V_ASN1_SEQUENCE)
		{
		c->error=ERR_R_EXPECTING_AN_ASN1_SEQUENCE;
		return(0);
		}
	(*length)-=(c->p-q);
	if (c->max && (*length < 0))
		{
		c->error=ERR_R_ASN1_LENGTH_MISMATCH;
		return(0);
		}
	if (c->inf == (1|V_ASN1_CONSTRUCTED))
		c->slen= *length+ *(c->pp)-c->p;
	c->eos=0;
	return(1);
	}

int ASN1_STRING_copy(ASN1_STRING *dst, const ASN1_STRING *str)
	{
	if (str == NULL)
		return 0;
	dst->type = str->type;
	if (!ASN1_STRING_set(dst,str->data,str->length))
		return 0;
	dst->flags = str->flags;
	return 1;
	}

ASN1_STRING *ASN1_STRING_dup(const ASN1_STRING *str)
	{
	ASN1_STRING *ret;
	if (!str)
		 return NULL;
	ret=ASN1_STRING_new();
	if (!ret)
		return NULL;
	if (!ASN1_STRING_copy(ret,str))
		{
		ASN1_STRING_free(ret);
		return NULL;
		}
	return ret;
	}

int ASN1_STRING_set(ASN1_STRING *str, const void *_data, size_t len)
	{
	unsigned char *c;
	const char *data=_data;

	if (len < 0)
		{
		if (data == NULL)
			return(0);
		else
			len=strlen(data);
		}
	if ((str->length < len) || (str->data == NULL))
		{
		c=str->data;
		if (c == NULL)
			str->data=OPENSSL_malloc(len+1);
		else
			str->data=OPENSSL_realloc(c,len+1);

		if (str->data == NULL)
			{
			ASN1err(ASN1_F_ASN1_STRING_SET,ERR_R_MALLOC_FAILURE);
			str->data=c;
			return(0);
			}
		}
	str->length=len;
	if (data != NULL)
		{
		memcpy(str->data,data,len);
		/* an allowance for strings :-) */
		str->data[len]='\0';
		}
	return(1);
	}

void ASN1_STRING_set0(ASN1_STRING *str, void *data, size_t len)
	{
	if (str->data)
		OPENSSL_free(str->data);
	str->data = data;
	str->length = len;
	}

ASN1_STRING *ASN1_STRING_new(void)
	{
	return(ASN1_STRING_type_new(V_ASN1_OCTET_STRING));
	}


ASN1_STRING *ASN1_STRING_type_new(int type)
	{
	ASN1_STRING *ret;

	ret=(ASN1_STRING *)OPENSSL_malloc(sizeof(ASN1_STRING));
	if (ret == NULL)
		{
		ASN1err(ASN1_F_ASN1_STRING_TYPE_NEW,ERR_R_MALLOC_FAILURE);
		return(NULL);
		}
	ret->length=0;
	ret->type=type;
	ret->data=NULL;
	ret->flags=0;
	return(ret);
	}

void ASN1_STRING_free(ASN1_STRING *a)
	{
	if (a == NULL) return;
	if (a->data && !(a->flags & ASN1_STRING_FLAG_NDEF))
		OPENSSL_free(a->data);
	OPENSSL_free(a);
	}

int ASN1_STRING_cmp(const ASN1_STRING *a, const ASN1_STRING *b)
	{
	int i;

	i=(a->length-b->length);
	if (i == 0)
		{
		i=memcmp(a->data,b->data,a->length);
		if (i == 0)
			return(a->type-b->type);
		else
			return(i);
		}
	else
		return(i);
	}

void asn1_add_error(const unsigned char *address, int offset)
	{
	char buf1[DECIMAL_SIZE(address)+1],buf2[DECIMAL_SIZE(offset)+1];

	BIO_snprintf(buf1,sizeof buf1,"%lu",(unsigned long)address);
	BIO_snprintf(buf2,sizeof buf2,"%d",offset);
	ERR_add_error_data(4,"address=",buf1," offset=",buf2);
	}

size_t ASN1_STRING_length(const ASN1_STRING *x)
	{ return M_ASN1_STRING_length(x); }

void ASN1_STRING_length_set(ASN1_STRING *x, size_t len)
	{ M_ASN1_STRING_length_set(x, len); return; }

int ASN1_STRING_type(ASN1_STRING *x)
	{ return M_ASN1_STRING_type(x); }

unsigned char * ASN1_STRING_data(ASN1_STRING *x)
	{ return M_ASN1_STRING_data(x); }
Commit	Line	Data
d02b48c6	1	/* crypto/asn1/asn1_lib.c */
58964a49	2	/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
d02b48c6 RE	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	#include <stdio.h>
f9082268	60	#include <limits.h>
d02b48c6	61	#include "cryptlib.h"
ec577822	62	#include <openssl/asn1.h>
40889b9c	63	#include <openssl/asn1_mac.h>
d02b48c6	64
4d6e1e4f BL	65	static int asn1_get_length(const unsigned char *pp, int inf, size_t *rl,
4d6e1e4f BL	66	size_t max);
d02b48c6	67	static void asn1_put_length(unsigned char **pp, int length);
560b79cb	68	const char ASN1_version[]="ASN.1" OPENSSL_VERSION_PTEXT;
d02b48c6	69
875a644a	70	static int _asn1_check_infinite_end(const unsigned char **p, long len)
d02b48c6 RE	71	{
	72	/* If there is 0 or 1 byte left, the length check should pick
	73	* things up */
	74	if (len <= 0)
	75	return(1);
	76	else if ((len >= 2) && ((p)[0] == 0) && ((p)[1] == 0))
	77	{
	78	(*p)+=2;
	79	return(1);
	80	}
	81	return(0);
	82	}
	83
4d6e1e4f	84	int ASN1_check_infinite_end(unsigned char **p, size_t len)
875a644a RL	85	{
	86	return _asn1_check_infinite_end((const unsigned char **)p, len);
	87	}
d02b48c6	88
4d6e1e4f	89	int ASN1_const_check_infinite_end(const unsigned char **p, size_t len)
875a644a RL	90	{
	91	return _asn1_check_infinite_end(p, len);
	92	}
	93
	94
4d6e1e4f BL	95	int ASN1_get_object(const unsigned char *pp, size_t plength, int *ptag,
4d6e1e4f BL	96	int *pclass, size_t omax)
d02b48c6 RE	97	{
	98	int i,ret;
	99	long l;
875a644a	100	const unsigned char p= pp;
d02b48c6	101	int tag,xclass,inf;
4d6e1e4f BL	102	size_t max=omax;
	103
	104	if (!max)
	105	goto err;
d02b48c6	106
d02b48c6 RE	107	ret=(*p&V_ASN1_CONSTRUCTED);
d02b48c6 RE	108	xclass=(*p&V_ASN1_PRIVATE);
5d818c30 UM	109	i= *p&V_ASN1_PRIMITIVE_TAG;
5d818c30 UM	110	if (i == V_ASN1_PRIMITIVE_TAG)
d02b48c6 RE	111	{ /* high-tag */
	112	p++;
	113	if (--max == 0) goto err;
	114	l=0;
	115	while (*p&0x80)
	116	{
	117	l<<=7L;
	118	l\|= *(p++)&0x7f;
	119	if (--max == 0) goto err;
29902449	120	if (l > (INT_MAX >> 7L)) goto err;
d02b48c6 RE	121	}
	122	l<<=7L;
	123	l\|= *(p++)&0x7f;
	124	tag=(int)l;
29902449	125	if (--max == 0) goto err;
d02b48c6 RE	126	}
	127	else
	128	{
	129	tag=i;
	130	p++;
	131	if (--max == 0) goto err;
	132	}
	133	*ptag=tag;
	134	*pclass=xclass;
	135	if (!asn1_get_length(&p,&inf,plength,(int)max)) goto err;
	136
dfeab068 RE	137	#if 0
	138	fprintf(stderr,"p=%d + plength=%ld > omax=%ld + pp=%d (%d > %d)\n",
	139	(int)p,plength,omax,(int)pp,(int)(p+ *plength),
	140	(int)(omax+ *pp));
d02b48c6	141
58964a49	142	#endif
aaa384ca	143	if (plength > (omax - (p - pp)))
d02b48c6 RE	144	{
	145	ASN1err(ASN1_F_ASN1_GET_OBJECT,ASN1_R_TOO_LONG);
	146	/* Set this so that even if things are not long enough
	147	* the values are set correctly */
	148	ret\|=0x80;
	149	}
	150	*pp=p;
dfeab068	151	return(ret\|inf);
d02b48c6 RE	152	err:
	153	ASN1err(ASN1_F_ASN1_GET_OBJECT,ASN1_R_HEADER_TOO_LONG);
	154	return(0x80);
	155	}
	156
4d6e1e4f BL	157	static int asn1_get_length(const unsigned char *pp, int inf, size_t *rl,
4d6e1e4f BL	158	size_t max)
d02b48c6	159	{
875a644a	160	const unsigned char p= pp;
f9082268	161	unsigned long ret=0;
27545970	162	unsigned int i;
d02b48c6 RE	163
	164	if (max-- < 1) return(0);
	165	if (*p == 0x80)
	166	{
	167	*inf=1;
	168	ret=0;
	169	p++;
	170	}
	171	else
	172	{
	173	*inf=0;
	174	i= *p&0x7f;
	175	if (*(p++) & 0x80)
	176	{
c046fffa LJ	177	if (i > sizeof(long))
c046fffa LJ	178	return 0;
d02b48c6 RE	179	if (max-- == 0) return(0);
	180	while (i-- > 0)
	181	{
	182	ret<<=8L;
	183	ret\|= *(p++);
	184	if (max-- == 0) return(0);
	185	}
	186	}
	187	else
	188	ret=i;
	189	}
f9082268	190	if (ret > LONG_MAX)
c046fffa	191	return 0;
d02b48c6	192	*pp=p;
f9082268	193	*rl=(long)ret;
d02b48c6 RE	194	return(1);
	195	}
	196
	197	/* class 0 is constructed
657e60fa	198	* constructed == 2 for indefinite length constructed */
4d6e1e4f BL	199	void ASN1_put_object(unsigned char **pp, int constructed, size_t length,
4d6e1e4f BL	200	int tag, int xclass)
d02b48c6 RE	201	{
d02b48c6 RE	202	unsigned char p= pp;
094fe66d	203	int i, ttag;
d02b48c6 RE	204
	205	i=(constructed)?V_ASN1_CONSTRUCTED:0;
	206	i\|=(xclass&V_ASN1_PRIVATE);
	207	if (tag < 31)
5d818c30	208	*(p++)=i\|(tag&V_ASN1_PRIMITIVE_TAG);
d02b48c6 RE	209	else
d02b48c6 RE	210	{
5d818c30	211	*(p++)=i\|V_ASN1_PRIMITIVE_TAG;
094fe66d DSH	212	for(i = 0, ttag = tag; ttag > 0; i++) ttag >>=7;
	213	ttag = i;
	214	while(i-- > 0)
d02b48c6	215	{
094fe66d DSH	216	p[i] = tag & 0x7f;
	217	if(i != (ttag - 1)) p[i] \|= 0x80;
	218	tag >>= 7;
d02b48c6	219	}
094fe66d	220	p += ttag;
d02b48c6	221	}
230fd6b7 DSH	222	if (constructed == 2)
230fd6b7 DSH	223	*(p++)=0x80;
d02b48c6 RE	224	else
	225	asn1_put_length(&p,length);
	226	*pp=p;
	227	}
	228
230fd6b7 DSH	229	int ASN1_put_eoc(unsigned char **pp)
	230	{
	231	unsigned char p = pp;
	232	*p++ = 0;
	233	*p++ = 0;
	234	*pp = p;
	235	return 2;
	236	}
	237
6b691a5c	238	static void asn1_put_length(unsigned char **pp, int length)
d02b48c6 RE	239	{
	240	unsigned char p= pp;
	241	int i,l;
	242	if (length <= 127)
	243	*(p++)=(unsigned char)length;
	244	else
	245	{
	246	l=length;
	247	for (i=0; l > 0; i++)
	248	l>>=8;
	249	*(p++)=i\|0x80;
	250	l=i;
	251	while (i-- > 0)
	252	{
	253	p[i]=length&0xff;
	254	length>>=8;
	255	}
	256	p+=l;
	257	}
	258	*pp=p;
	259	}
	260
4d6e1e4f	261	size_t ASN1_object_size(int constructed, size_t length, int tag)
d02b48c6 RE	262	{
	263	int ret;
	264
	265	ret=length;
	266	ret++;
	267	if (tag >= 31)
	268	{
	269	while (tag > 0)
	270	{
	271	tag>>=7;
	272	ret++;
	273	}
	274	}
230fd6b7 DSH	275	if (constructed == 2)
230fd6b7 DSH	276	return ret + 3;
d02b48c6 RE	277	ret++;
	278	if (length > 127)
	279	{
	280	while (length > 0)
	281	{
	282	length>>=8;
	283	ret++;
	284	}
	285	}
	286	return(ret);
	287	}
	288
875a644a	289	static int _asn1_Finish(ASN1_const_CTX *c)
d02b48c6 RE	290	{
	291	if ((c->inf == (1\|V_ASN1_CONSTRUCTED)) && (!c->eos))
	292	{
875a644a	293	if (!ASN1_const_check_infinite_end(&c->p,c->slen))
d02b48c6	294	{
dfeab068	295	c->error=ERR_R_MISSING_ASN1_EOS;
d02b48c6 RE	296	return(0);
	297	}
	298	}
	299	if ( ((c->slen != 0) && !(c->inf & 1)) \|\|
	300	((c->slen < 0) && (c->inf & 1)))
	301	{
dfeab068	302	c->error=ERR_R_ASN1_LENGTH_MISMATCH;
d02b48c6 RE	303	return(0);
	304	}
	305	return(1);
	306	}
	307
875a644a RL	308	int asn1_Finish(ASN1_CTX *c)
	309	{
	310	return _asn1_Finish((ASN1_const_CTX *)c);
	311	}
	312
	313	int asn1_const_Finish(ASN1_const_CTX *c)
	314	{
	315	return _asn1_Finish(c);
	316	}
	317
5e4430e7	318	int asn1_GetSequence(ASN1_const_CTX c, size_t length)
d02b48c6	319	{
875a644a	320	const unsigned char *q;
d02b48c6 RE	321
	322	q=c->p;
	323	c->inf=ASN1_get_object(&(c->p),&(c->slen),&(c->tag),&(c->xclass),
	324	*length);
	325	if (c->inf & 0x80)
	326	{
dfeab068	327	c->error=ERR_R_BAD_GET_ASN1_OBJECT_CALL;
d02b48c6 RE	328	return(0);
	329	}
	330	if (c->tag != V_ASN1_SEQUENCE)
	331	{
dfeab068	332	c->error=ERR_R_EXPECTING_AN_ASN1_SEQUENCE;
d02b48c6 RE	333	return(0);
	334	}
	335	(*length)-=(c->p-q);
	336	if (c->max && (*length < 0))
	337	{
dfeab068	338	c->error=ERR_R_ASN1_LENGTH_MISMATCH;
d02b48c6 RE	339	return(0);
	340	}
	341	if (c->inf == (1\|V_ASN1_CONSTRUCTED))
	342	c->slen= length+ (c->pp)-c->p;
	343	c->eos=0;
	344	return(1);
	345	}
	346
18f54773 DSH	347	int ASN1_STRING_copy(ASN1_STRING dst, const ASN1_STRING str)
	348	{
	349	if (str == NULL)
	350	return 0;
	351	dst->type = str->type;
	352	if (!ASN1_STRING_set(dst,str->data,str->length))
	353	return 0;
	354	dst->flags = str->flags;
	355	return 1;
	356	}
	357
6384e46d	358	ASN1_STRING ASN1_STRING_dup(const ASN1_STRING str)
d02b48c6 RE	359	{
d02b48c6 RE	360	ASN1_STRING *ret;
18f54773 DSH	361	if (!str)
	362	return NULL;
	363	ret=ASN1_STRING_new();
	364	if (!ret)
	365	return NULL;
	366	if (!ASN1_STRING_copy(ret,str))
d02b48c6 RE	367	{
d02b48c6 RE	368	ASN1_STRING_free(ret);
18f54773	369	return NULL;
d02b48c6	370	}
18f54773	371	return ret;
d02b48c6 RE	372	}
d02b48c6 RE	373
4d6e1e4f	374	int ASN1_STRING_set(ASN1_STRING str, const void _data, size_t len)
d02b48c6	375	{
61f5b6f3 BL	376	unsigned char *c;
61f5b6f3 BL	377	const char *data=_data;
d02b48c6 RE	378
	379	if (len < 0)
	380	{
	381	if (data == NULL)
	382	return(0);
	383	else
61f5b6f3	384	len=strlen(data);
d02b48c6 RE	385	}
	386	if ((str->length < len) \|\| (str->data == NULL))
	387	{
61f5b6f3	388	c=str->data;
d02b48c6	389	if (c == NULL)
26a3a48d	390	str->data=OPENSSL_malloc(len+1);
d02b48c6	391	else
26a3a48d	392	str->data=OPENSSL_realloc(c,len+1);
d02b48c6 RE	393
	394	if (str->data == NULL)
	395	{
a0e7c8ee	396	ASN1err(ASN1_F_ASN1_STRING_SET,ERR_R_MALLOC_FAILURE);
61f5b6f3	397	str->data=c;
d02b48c6 RE	398	return(0);
	399	}
	400	}
	401	str->length=len;
	402	if (data != NULL)
	403	{
	404	memcpy(str->data,data,len);
657e60fa	405	/* an allowance for strings :-) */
d02b48c6 RE	406	str->data[len]='\0';
	407	}
	408	return(1);
	409	}
	410
4d6e1e4f	411	void ASN1_STRING_set0(ASN1_STRING str, void data, size_t len)
399a6f0b DSH	412	{
	413	if (str->data)
	414	OPENSSL_free(str->data);
	415	str->data = data;
	416	str->length = len;
	417	}
	418
6b691a5c	419	ASN1_STRING *ASN1_STRING_new(void)
d02b48c6 RE	420	{
	421	return(ASN1_STRING_type_new(V_ASN1_OCTET_STRING));
	422	}
	423
	424
6b691a5c	425	ASN1_STRING *ASN1_STRING_type_new(int type)
d02b48c6 RE	426	{
	427	ASN1_STRING *ret;
	428
26a3a48d	429	ret=(ASN1_STRING *)OPENSSL_malloc(sizeof(ASN1_STRING));
d02b48c6 RE	430	if (ret == NULL)
	431	{
	432	ASN1err(ASN1_F_ASN1_STRING_TYPE_NEW,ERR_R_MALLOC_FAILURE);
	433	return(NULL);
	434	}
	435	ret->length=0;
	436	ret->type=type;
	437	ret->data=NULL;
dfeab068	438	ret->flags=0;
d02b48c6 RE	439	return(ret);
	440	}
	441
6b691a5c	442	void ASN1_STRING_free(ASN1_STRING *a)
d02b48c6 RE	443	{
d02b48c6 RE	444	if (a == NULL) return;
9cfc8a9d DSH	445	if (a->data && !(a->flags & ASN1_STRING_FLAG_NDEF))
9cfc8a9d DSH	446	OPENSSL_free(a->data);
26a3a48d	447	OPENSSL_free(a);
d02b48c6 RE	448	}
d02b48c6 RE	449
6384e46d	450	int ASN1_STRING_cmp(const ASN1_STRING a, const ASN1_STRING b)
d02b48c6 RE	451	{
	452	int i;
	453
	454	i=(a->length-b->length);
	455	if (i == 0)
	456	{
	457	i=memcmp(a->data,b->data,a->length);
	458	if (i == 0)
	459	return(a->type-b->type);
	460	else
	461	return(i);
	462	}
	463	else
	464	return(i);
	465	}
	466
875a644a	467	void asn1_add_error(const unsigned char *address, int offset)
58964a49	468	{
c046fffa	469	char buf1[DECIMAL_SIZE(address)+1],buf2[DECIMAL_SIZE(offset)+1];
58964a49	470
d420ac2c RL	471	BIO_snprintf(buf1,sizeof buf1,"%lu",(unsigned long)address);
d420ac2c RL	472	BIO_snprintf(buf2,sizeof buf2,"%d",offset);
58964a49 RE	473	ERR_add_error_data(4,"address=",buf1," offset=",buf2);
	474	}
	475
4d6e1e4f BL	476	size_t ASN1_STRING_length(const ASN1_STRING *x)
4d6e1e4f BL	477	{ return M_ASN1_STRING_length(x); }
08e9c1af	478
4d6e1e4f BL	479	void ASN1_STRING_length_set(ASN1_STRING *x, size_t len)
4d6e1e4f BL	480	{ M_ASN1_STRING_length_set(x, len); return; }
08e9c1af DSH	481
08e9c1af DSH	482	int ASN1_STRING_type(ASN1_STRING *x)
4d6e1e4f	483	{ return M_ASN1_STRING_type(x); }
08e9c1af DSH	484
08e9c1af DSH	485	unsigned char * ASN1_STRING_data(ASN1_STRING *x)
4d6e1e4f	486	{ return M_ASN1_STRING_data(x); }