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

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

static unsigned long tag2bit[32]={
0,	0,	0,	B_ASN1_BIT_STRING,	/* tags  0 -  3 */
B_ASN1_OCTET_STRING,	0,	0,		B_ASN1_UNKNOWN,/* tags  4- 7 */
B_ASN1_UNKNOWN,	B_ASN1_UNKNOWN,	B_ASN1_UNKNOWN,	B_ASN1_UNKNOWN,/* tags  8-11 */
B_ASN1_UTF8STRING,B_ASN1_UNKNOWN,B_ASN1_UNKNOWN,B_ASN1_UNKNOWN,/* tags 12-15 */
0,	0,	B_ASN1_NUMERICSTRING,B_ASN1_PRINTABLESTRING,
B_ASN1_T61STRING,B_ASN1_VIDEOTEXSTRING,B_ASN1_IA5STRING,0,
0,B_ASN1_GRAPHICSTRING,B_ASN1_ISO64STRING,B_ASN1_GENERALSTRING,
B_ASN1_UNIVERSALSTRING,B_ASN1_UNKNOWN,B_ASN1_BMPSTRING,B_ASN1_UNKNOWN,
	};

static int asn1_collate_primative(ASN1_STRING *a, ASN1_CTX *c);
/* type is a 'bitmap' of acceptable string types.
 */
ASN1_STRING *d2i_ASN1_type_bytes(ASN1_STRING **a, unsigned char **pp,
	     long length, int type)
	{
	ASN1_STRING *ret=NULL;
	unsigned char *p,*s;
	long len;
	int inf,tag,xclass;
	int i=0;

	p= *pp;
	inf=ASN1_get_object(&p,&len,&tag,&xclass,length);
	if (inf & 0x80) goto err;

	if (tag >= 32)
		{
		i=ASN1_R_TAG_VALUE_TOO_HIGH;;
		goto err;
		}
	if (!(tag2bit[tag] & type))
		{
		i=ASN1_R_WRONG_TYPE;
		goto err;
		}

	/* If a bit-string, exit early */
	if (tag == V_ASN1_BIT_STRING)
		return(d2i_ASN1_BIT_STRING(a,pp,length));

	if ((a == NULL) || ((*a) == NULL))
		{
		if ((ret=ASN1_STRING_new()) == NULL) return(NULL);
		}
	else
		ret=(*a);

	if (len != 0)
		{
		s=(unsigned char *)Malloc((int)len+1);
		if (s == NULL)
			{
			i=ERR_R_MALLOC_FAILURE;
			goto err;
			}
		memcpy(s,p,(int)len);
		s[len]='\0';
		p+=len;
		}
	else
		s=NULL;

	if (ret->data != NULL) Free((char *)ret->data);
	ret->length=(int)len;
	ret->data=s;
	ret->type=tag;
	if (a != NULL) (*a)=ret;
	*pp=p;
	return(ret);
err:
	ASN1err(ASN1_F_D2I_ASN1_TYPE_BYTES,i);
	if ((ret != NULL) && ((a == NULL) || (*a != ret)))
		ASN1_STRING_free(ret);
	return(NULL);
	}

int i2d_ASN1_bytes(ASN1_STRING *a, unsigned char **pp, int tag, int xclass)
	{
	int ret,r,constructed;
	unsigned char *p;

	if (a == NULL)  return(0);

	if (tag == V_ASN1_BIT_STRING)
		return(i2d_ASN1_BIT_STRING(a,pp));
		
	ret=a->length;
	r=ASN1_object_size(0,ret,tag);
	if (pp == NULL) return(r);
	p= *pp;

	if ((tag == V_ASN1_SEQUENCE) || (tag == V_ASN1_SET))
		constructed=1;
	else
		constructed=0;
	ASN1_put_object(&p,constructed,ret,tag,xclass);
	memcpy(p,a->data,a->length);
	p+=a->length;
	*pp= p;
	return(r);
	}

ASN1_STRING *d2i_ASN1_bytes(ASN1_STRING **a, unsigned char **pp, long length,
	     int Ptag, int Pclass)
	{
	ASN1_STRING *ret=NULL;
	unsigned char *p,*s;
	long len;
	int inf,tag,xclass;
	int i=0;

	if ((a == NULL) || ((*a) == NULL))
		{
		if ((ret=ASN1_STRING_new()) == NULL) return(NULL);
		}
	else
		ret=(*a);

	p= *pp;
	inf=ASN1_get_object(&p,&len,&tag,&xclass,length);
	if (inf & 0x80)
		{
		i=ASN1_R_BAD_OBJECT_HEADER;
		goto err;
		}

	if (tag != Ptag)
		{
		i=ASN1_R_WRONG_TAG;
		goto err;
		}

	if (inf & V_ASN1_CONSTRUCTED)
		{
		ASN1_CTX c;

		c.pp=pp;
		c.p=p;
		c.inf=inf;
		c.slen=len;
		c.tag=Ptag;
		c.xclass=Pclass;
		c.max=(length == 0)?0:(p+length);
		if (!asn1_collate_primative(ret,&c)) 
			goto err; 
		else
			{
			p=c.p;
			}
		}
	else
		{
		if (len != 0)
			{
			if ((ret->length < len) || (ret->data == NULL))
				{
				if (ret->data != NULL) Free((char *)ret->data);
				s=(unsigned char *)Malloc((int)len);
				if (s == NULL)
					{
					i=ERR_R_MALLOC_FAILURE;
					goto err;
					}
				}
			else
				s=ret->data;
			memcpy(s,p,(int)len);
			p+=len;
			}
		else
			{
			s=NULL;
			if (ret->data != NULL) Free((char *)ret->data);
			}

		ret->length=(int)len;
		ret->data=s;
		ret->type=Ptag;
		}

	if (a != NULL) (*a)=ret;
	*pp=p;
	return(ret);
err:
	if ((ret != NULL) && ((a == NULL) || (*a != ret)))
		ASN1_STRING_free(ret);
	ASN1err(ASN1_F_D2I_ASN1_BYTES,i);
	return(NULL);
	}


/* We are about to parse 0..n d2i_ASN1_bytes objects, we are to collapes
 * them into the one struture that is then returned */
/* There have been a few bug fixes for this function from
 * Paul Keogh <paul.keogh@sse.ie>, many thanks to him */
static int asn1_collate_primative(ASN1_STRING *a, ASN1_CTX *c)
	{
	ASN1_STRING *os=NULL;
	BUF_MEM b;
	int num;

	b.length=0;
	b.max=0;
	b.data=NULL;

	if (a == NULL)
		{
		c->error=ERR_R_PASSED_NULL_PARAMETER;
		goto err;
		}

	num=0;
	for (;;)
		{
		if (c->inf & 1)
			{
			c->eos=ASN1_check_infinite_end(&c->p,
				(long)(c->max-c->p));
			if (c->eos) break;
			}
		else
			{
			if (c->slen <= 0) break;
			}

		c->q=c->p;
		if (d2i_ASN1_bytes(&os,&c->p,c->max-c->p,c->tag,c->xclass)
			== NULL)
			{
			c->error=ERR_R_ASN1_LIB;
			goto err;
			}

		if (!BUF_MEM_grow(&b,num+os->length))
			{
			c->error=ERR_R_BUF_LIB;
			goto err;
			}
		memcpy(&(b.data[num]),os->data,os->length);
		if (!(c->inf & 1))
			c->slen-=(c->p-c->q);
		num+=os->length;
		}

	if (!asn1_Finish(c)) goto err;

	a->length=num;
	if (a->data != NULL) Free(a->data);
	a->data=(unsigned char *)b.data;
	if (os != NULL) ASN1_STRING_free(os);
	return(1);
err:
	ASN1err(ASN1_F_ASN1_COLLATE_PRIMITIVE,c->error);
	if (os != NULL) ASN1_STRING_free(os);
	if (b.data != NULL) Free(b.data);
	return(0);
	}
Commit	Line	Data
d02b48c6	1	/* crypto/asn1/a_bytes.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>
	60	#include "cryptlib.h"
ec577822	61	#include <openssl/asn1_mac.h>
d02b48c6	62
d02b48c6	63	static unsigned long tag2bit[32]={
58964a49	64	0, 0, 0, B_ASN1_BIT_STRING, /* tags 0 - 3 */
d02b48c6 RE	65	B_ASN1_OCTET_STRING, 0, 0, B_ASN1_UNKNOWN,/* tags 4- 7 */
d02b48c6 RE	66	B_ASN1_UNKNOWN, B_ASN1_UNKNOWN, B_ASN1_UNKNOWN, B_ASN1_UNKNOWN,/* tags 8-11 */
d77b3054	67	B_ASN1_UTF8STRING,B_ASN1_UNKNOWN,B_ASN1_UNKNOWN,B_ASN1_UNKNOWN,/* tags 12-15 */
d02b48c6 RE	68	0, 0, B_ASN1_NUMERICSTRING,B_ASN1_PRINTABLESTRING,
	69	B_ASN1_T61STRING,B_ASN1_VIDEOTEXSTRING,B_ASN1_IA5STRING,0,
	70	0,B_ASN1_GRAPHICSTRING,B_ASN1_ISO64STRING,B_ASN1_GENERALSTRING,
58964a49	71	B_ASN1_UNIVERSALSTRING,B_ASN1_UNKNOWN,B_ASN1_BMPSTRING,B_ASN1_UNKNOWN,
d02b48c6 RE	72	};
d02b48c6 RE	73
d02b48c6	74	static int asn1_collate_primative(ASN1_STRING a, ASN1_CTX c);
d77b3054	75	/* type is a 'bitmap' of acceptable string types.
d02b48c6	76	*/
6b691a5c UM	77	ASN1_STRING d2i_ASN1_type_bytes(ASN1_STRING a, unsigned char *pp,
6b691a5c UM	78	long length, int type)
d02b48c6 RE	79	{
	80	ASN1_STRING *ret=NULL;
	81	unsigned char p,s;
	82	long len;
	83	int inf,tag,xclass;
	84	int i=0;
	85
d02b48c6 RE	86	p= *pp;
	87	inf=ASN1_get_object(&p,&len,&tag,&xclass,length);
	88	if (inf & 0x80) goto err;
	89
	90	if (tag >= 32)
	91	{
	92	i=ASN1_R_TAG_VALUE_TOO_HIGH;;
	93	goto err;
	94	}
	95	if (!(tag2bit[tag] & type))
	96	{
	97	i=ASN1_R_WRONG_TYPE;
	98	goto err;
	99	}
58964a49 RE	100
	101	/* If a bit-string, exit early */
	102	if (tag == V_ASN1_BIT_STRING)
	103	return(d2i_ASN1_BIT_STRING(a,pp,length));
	104
	105	if ((a == NULL) \|\| ((*a) == NULL))
	106	{
	107	if ((ret=ASN1_STRING_new()) == NULL) return(NULL);
	108	}
	109	else
	110	ret=(*a);
	111
d02b48c6 RE	112	if (len != 0)
	113	{
	114	s=(unsigned char *)Malloc((int)len+1);
	115	if (s == NULL)
	116	{
	117	i=ERR_R_MALLOC_FAILURE;
	118	goto err;
	119	}
	120	memcpy(s,p,(int)len);
	121	s[len]='\0';
	122	p+=len;
	123	}
	124	else
	125	s=NULL;
	126
	127	if (ret->data != NULL) Free((char *)ret->data);
	128	ret->length=(int)len;
	129	ret->data=s;
	130	ret->type=tag;
	131	if (a != NULL) (*a)=ret;
	132	*pp=p;
	133	return(ret);
	134	err:
	135	ASN1err(ASN1_F_D2I_ASN1_TYPE_BYTES,i);
	136	if ((ret != NULL) && ((a == NULL) \|\| (*a != ret)))
	137	ASN1_STRING_free(ret);
	138	return(NULL);
	139	}
	140
6b691a5c	141	int i2d_ASN1_bytes(ASN1_STRING a, unsigned char *pp, int tag, int xclass)
d02b48c6 RE	142	{
	143	int ret,r,constructed;
	144	unsigned char *p;
	145
	146	if (a == NULL) return(0);
58964a49 RE	147
	148	if (tag == V_ASN1_BIT_STRING)
	149	return(i2d_ASN1_BIT_STRING(a,pp));
	150
d02b48c6 RE	151	ret=a->length;
	152	r=ASN1_object_size(0,ret,tag);
	153	if (pp == NULL) return(r);
	154	p= *pp;
	155
	156	if ((tag == V_ASN1_SEQUENCE) \|\| (tag == V_ASN1_SET))
	157	constructed=1;
	158	else
	159	constructed=0;
	160	ASN1_put_object(&p,constructed,ret,tag,xclass);
	161	memcpy(p,a->data,a->length);
	162	p+=a->length;
	163	*pp= p;
	164	return(r);
	165	}
	166
6b691a5c UM	167	ASN1_STRING d2i_ASN1_bytes(ASN1_STRING a, unsigned char *pp, long length,
6b691a5c UM	168	int Ptag, int Pclass)
d02b48c6 RE	169	{
	170	ASN1_STRING *ret=NULL;
	171	unsigned char p,s;
	172	long len;
	173	int inf,tag,xclass;
	174	int i=0;
	175
	176	if ((a == NULL) \|\| ((*a) == NULL))
	177	{
	178	if ((ret=ASN1_STRING_new()) == NULL) return(NULL);
	179	}
	180	else
	181	ret=(*a);
	182
	183	p= *pp;
	184	inf=ASN1_get_object(&p,&len,&tag,&xclass,length);
	185	if (inf & 0x80)
	186	{
	187	i=ASN1_R_BAD_OBJECT_HEADER;
	188	goto err;
	189	}
	190
	191	if (tag != Ptag)
	192	{
	193	i=ASN1_R_WRONG_TAG;
	194	goto err;
	195	}
	196
	197	if (inf & V_ASN1_CONSTRUCTED)
	198	{
	199	ASN1_CTX c;
	200
	201	c.pp=pp;
	202	c.p=p;
	203	c.inf=inf;
	204	c.slen=len;
	205	c.tag=Ptag;
	206	c.xclass=Pclass;
	207	c.max=(length == 0)?0:(p+length);
	208	if (!asn1_collate_primative(ret,&c))
	209	goto err;
	210	else
	211	{
	212	p=c.p;
	213	}
	214	}
	215	else
	216	{
	217	if (len != 0)
	218	{
58964a49	219	if ((ret->length < len) \|\| (ret->data == NULL))
d02b48c6 RE	220	{
	221	if (ret->data != NULL) Free((char *)ret->data);
	222	s=(unsigned char *)Malloc((int)len);
	223	if (s == NULL)
	224	{
	225	i=ERR_R_MALLOC_FAILURE;
	226	goto err;
	227	}
	228	}
	229	else
	230	s=ret->data;
	231	memcpy(s,p,(int)len);
	232	p+=len;
	233	}
	234	else
	235	{
	236	s=NULL;
	237	if (ret->data != NULL) Free((char *)ret->data);
	238	}
	239
	240	ret->length=(int)len;
	241	ret->data=s;
	242	ret->type=Ptag;
	243	}
	244
	245	if (a != NULL) (*a)=ret;
	246	*pp=p;
	247	return(ret);
	248	err:
	249	if ((ret != NULL) && ((a == NULL) \|\| (*a != ret)))
	250	ASN1_STRING_free(ret);
	251	ASN1err(ASN1_F_D2I_ASN1_BYTES,i);
	252	return(NULL);
	253	}
	254
	255
	256	/* We are about to parse 0..n d2i_ASN1_bytes objects, we are to collapes
	257	* them into the one struture that is then returned */
	258	/* There have been a few bug fixes for this function from
	259	* Paul Keogh <paul.keogh@sse.ie>, many thanks to him */
6b691a5c	260	static int asn1_collate_primative(ASN1_STRING a, ASN1_CTX c)
d02b48c6 RE	261	{
	262	ASN1_STRING *os=NULL;
	263	BUF_MEM b;
	264	int num;
	265
	266	b.length=0;
	267	b.max=0;
	268	b.data=NULL;
	269
	270	if (a == NULL)
	271	{
	272	c->error=ERR_R_PASSED_NULL_PARAMETER;
	273	goto err;
	274	}
	275
	276	num=0;
	277	for (;;)
	278	{
	279	if (c->inf & 1)
	280	{
	281	c->eos=ASN1_check_infinite_end(&c->p,
	282	(long)(c->max-c->p));
	283	if (c->eos) break;
	284	}
	285	else
	286	{
	287	if (c->slen <= 0) break;
	288	}
	289
	290	c->q=c->p;
	291	if (d2i_ASN1_bytes(&os,&c->p,c->max-c->p,c->tag,c->xclass)
	292	== NULL)
	293	{
	294	c->error=ERR_R_ASN1_LIB;
	295	goto err;
	296	}
	297
	298	if (!BUF_MEM_grow(&b,num+os->length))
	299	{
	300	c->error=ERR_R_BUF_LIB;
	301	goto err;
	302	}
	303	memcpy(&(b.data[num]),os->data,os->length);
	304	if (!(c->inf & 1))
	305	c->slen-=(c->p-c->q);
	306	num+=os->length;
	307	}
	308
	309	if (!asn1_Finish(c)) goto err;
	310
	311	a->length=num;
	312	if (a->data != NULL) Free(a->data);
	313	a->data=(unsigned char *)b.data;
	314	if (os != NULL) ASN1_STRING_free(os);
	315	return(1);
	316	err:
5d818c30	317	ASN1err(ASN1_F_ASN1_COLLATE_PRIMITIVE,c->error);
d02b48c6 RE	318	if (os != NULL) ASN1_STRING_free(os);
	319	if (b.data != NULL) Free(b.data);
	320	return(0);
	321	}
	322