crypto/asn1/p7_lib.c - third_party/openssl - Git at Google

 /* crypto/asn1/p7_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 "cryptlib.h"
 #include <openssl/asn1_mac.h>
 #include <openssl/objects.h>

 /* ASN1err(ASN1_F_D2I_PKCS7,ASN1_R_BAD_PKCS7_CONTENT);
  * ASN1err(ASN1_F_I2D_PKCS7,ASN1_R_BAD_PKCS7_TYPE);
  * ASN1err(ASN1_F_PKCS7_NEW,ASN1_R_BAD_PKCS7_TYPE);
  */

 int i2d_PKCS7(PKCS7 *a, unsigned char **pp)
 	{
 	M_ASN1_I2D_vars(a);

 	if (a->asn1 != NULL)
 		{
 		if (pp == NULL)
 			return((int)a->length);
 		memcpy(*pp,a->asn1,(int)a->length);
 		*pp+=a->length;
 		return((int)a->length);
 		}

 	ret+=4; /* sequence, BER header plus '0 0' end padding */
 	M_ASN1_I2D_len(a->type,i2d_ASN1_OBJECT);
 	if (a->d.ptr != NULL)
 		{
 		ret+=4; /* explicit tag [ 0 ] BER plus '0 0' */
 		switch (OBJ_obj2nid(a->type))
 			{
 		case NID_pkcs7_data:
 			M_ASN1_I2D_len(a->d.data,i2d_ASN1_OCTET_STRING);
 			break;
 		case NID_pkcs7_signed:
 			M_ASN1_I2D_len(a->d.sign,i2d_PKCS7_SIGNED);
 			break;
 		case NID_pkcs7_enveloped:
 			M_ASN1_I2D_len(a->d.enveloped,i2d_PKCS7_ENVELOPE);
 			break;
 		case NID_pkcs7_signedAndEnveloped:
 			M_ASN1_I2D_len(a->d.signed_and_enveloped,
 				i2d_PKCS7_SIGN_ENVELOPE);
 			break;
 		case NID_pkcs7_digest:
 			M_ASN1_I2D_len(a->d.digest,i2d_PKCS7_DIGEST);
 			break;
 		case NID_pkcs7_encrypted:
 			M_ASN1_I2D_len(a->d.encrypted,i2d_PKCS7_ENCRYPT);
 			break;
 		default:
 			break;
 			}
 		}
 	r=ret;
 	if (pp == NULL) return(r);
 	p= *pp;
 	M_ASN1_I2D_INF_seq_start(V_ASN1_SEQUENCE,V_ASN1_UNIVERSAL);
 	M_ASN1_I2D_put(a->type,i2d_ASN1_OBJECT);

 	if (a->d.ptr != NULL)
 		{
 		M_ASN1_I2D_INF_seq_start(0,V_ASN1_CONTEXT_SPECIFIC);
 		switch (OBJ_obj2nid(a->type))
 			{
 		case NID_pkcs7_data:
 			M_ASN1_I2D_put(a->d.data,i2d_ASN1_OCTET_STRING);
 			break;
 		case NID_pkcs7_signed:
 			M_ASN1_I2D_put(a->d.sign,i2d_PKCS7_SIGNED);
 			break;
 		case NID_pkcs7_enveloped:
 			M_ASN1_I2D_put(a->d.enveloped,i2d_PKCS7_ENVELOPE);
 			break;
 		case NID_pkcs7_signedAndEnveloped:
 			M_ASN1_I2D_put(a->d.signed_and_enveloped,
 				i2d_PKCS7_SIGN_ENVELOPE);
 			break;
 		case NID_pkcs7_digest:
 			M_ASN1_I2D_put(a->d.digest,i2d_PKCS7_DIGEST);
 			break;
 		case NID_pkcs7_encrypted:
 			M_ASN1_I2D_put(a->d.encrypted,i2d_PKCS7_ENCRYPT);
 			break;
 		default:
 			break;
 			}
 		M_ASN1_I2D_INF_seq_end();
 		}
 	M_ASN1_I2D_INF_seq_end();
 	M_ASN1_I2D_finish();
 	}

 PKCS7 *d2i_PKCS7(PKCS7 **a, unsigned char **pp, long length)
 	{
 	M_ASN1_D2I_vars(a,PKCS7 *,PKCS7_new);

 	if ((a != NULL) && ((*a) != NULL))
 		{
 		if ((*a)->asn1 != NULL)
 			{
 			Free((char *)(*a)->asn1);
 			(*a)->asn1=NULL;
 			}
 		(*a)->length=0;
 		}

 	M_ASN1_D2I_Init();
 	M_ASN1_D2I_start_sequence();
 	M_ASN1_D2I_get(ret->type,d2i_ASN1_OBJECT);
 	if (!M_ASN1_D2I_end_sequence())
 		{
 		int Tinf,Ttag,Tclass;
 		long Tlen;

 		if (M_ASN1_next != (V_ASN1_CONSTRUCTED|
 			V_ASN1_CONTEXT_SPECIFIC|0))
 			{
 			c.error=ASN1_R_BAD_PKCS7_CONTENT;
 			c.line=__LINE__;
 			goto err;
 			}

 		ret->detached=0;

 		c.q=c.p;
 		Tinf=ASN1_get_object(&c.p,&Tlen,&Ttag,&Tclass,
 			(c.inf & 1)?(length+ *pp-c.q):c.slen);
 		if (Tinf & 0x80) { c.line=__LINE__; goto err; }
 		c.slen-=(c.p-c.q);

 		switch (OBJ_obj2nid(ret->type))
 			{
 		case NID_pkcs7_data:
 			M_ASN1_D2I_get(ret->d.data,d2i_ASN1_OCTET_STRING);
 			break;
 		case NID_pkcs7_signed:
 			M_ASN1_D2I_get(ret->d.sign,d2i_PKCS7_SIGNED);
 			if (ret->d.sign->contents->d.ptr == NULL)
 				ret->detached=1;
 			break;
 		case NID_pkcs7_enveloped:
 			M_ASN1_D2I_get(ret->d.enveloped,d2i_PKCS7_ENVELOPE);
 			break;
 		case NID_pkcs7_signedAndEnveloped:
 			M_ASN1_D2I_get(ret->d.signed_and_enveloped,
 				d2i_PKCS7_SIGN_ENVELOPE);
 			break;
 		case NID_pkcs7_digest:
 			M_ASN1_D2I_get(ret->d.digest,d2i_PKCS7_DIGEST);
 			break;
 		case NID_pkcs7_encrypted:
 			M_ASN1_D2I_get(ret->d.encrypted,d2i_PKCS7_ENCRYPT);
 			break;
 		default:
 			c.error=ASN1_R_BAD_PKCS7_TYPE;
 			c.line=__LINE__;
 			goto err;
 			/* break; */
 			}
 		if (Tinf == (1|V_ASN1_CONSTRUCTED))
 			{
 			if (!ASN1_check_infinite_end(&c.p,c.slen))
 				{
 				c.error=ERR_R_MISSING_ASN1_EOS;
 				c.line=__LINE__;
 				goto err;
 				}
 			}
 		}
 	else
 		ret->detached=1;

 	M_ASN1_D2I_Finish(a,PKCS7_free,ASN1_F_D2I_PKCS7);
 	}

 PKCS7 *PKCS7_new(void)
 	{
 	PKCS7 *ret=NULL;
 	ASN1_CTX c;

 	M_ASN1_New_Malloc(ret,PKCS7);
 	ret->type=OBJ_nid2obj(NID_undef);
 	ret->asn1=NULL;
 	ret->length=0;
 	ret->detached=0;
 	ret->d.ptr=NULL;
 	return(ret);
 	M_ASN1_New_Error(ASN1_F_PKCS7_NEW);
 	}

 void PKCS7_free(PKCS7 *a)
 	{
 	if (a == NULL) return;

 	PKCS7_content_free(a);
 	if (a->type != NULL)
 		{
 		ASN1_OBJECT_free(a->type);
 		}
 	Free((char *)(char *)a);
 	}

 void PKCS7_content_free(PKCS7 *a)
 	{
 	if(a == NULL)
 	    return;

 	if (a->asn1 != NULL) Free((char *)a->asn1);

 	if (a->d.ptr != NULL)
 		{
 		if (a->type == NULL) return;

 		switch (OBJ_obj2nid(a->type))
 			{
 		case NID_pkcs7_data:
 			ASN1_OCTET_STRING_free(a->d.data);
 			break;
 		case NID_pkcs7_signed:
 			PKCS7_SIGNED_free(a->d.sign);
 			break;
 		case NID_pkcs7_enveloped:
 			PKCS7_ENVELOPE_free(a->d.enveloped);
 			break;
 		case NID_pkcs7_signedAndEnveloped:
 			PKCS7_SIGN_ENVELOPE_free(a->d.signed_and_enveloped);
 			break;
 		case NID_pkcs7_digest:
 			PKCS7_DIGEST_free(a->d.digest);
 			break;
 		case NID_pkcs7_encrypted:
 			PKCS7_ENCRYPT_free(a->d.encrypted);
 			break;
 		default:
 			/* MEMORY LEAK */
 			break;
 			}
 		}
 	a->d.ptr=NULL;
 	}
	/* crypto/asn1/p7_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 "cryptlib.h"
	#include <openssl/asn1_mac.h>
	#include <openssl/objects.h>

	/* ASN1err(ASN1_F_D2I_PKCS7,ASN1_R_BAD_PKCS7_CONTENT);
	* ASN1err(ASN1_F_I2D_PKCS7,ASN1_R_BAD_PKCS7_TYPE);
	* ASN1err(ASN1_F_PKCS7_NEW,ASN1_R_BAD_PKCS7_TYPE);
	*/

	int i2d_PKCS7(PKCS7 a, unsigned char *pp)
	{
	M_ASN1_I2D_vars(a);

	if (a->asn1 != NULL)
	{
	if (pp == NULL)
	return((int)a->length);
	memcpy(*pp,a->asn1,(int)a->length);
	*pp+=a->length;
	return((int)a->length);
	}

	ret+=4; /* sequence, BER header plus '0 0' end padding */
	M_ASN1_I2D_len(a->type,i2d_ASN1_OBJECT);
	if (a->d.ptr != NULL)
	{
	ret+=4; /* explicit tag [ 0 ] BER plus '0 0' */
	switch (OBJ_obj2nid(a->type))
	{
	case NID_pkcs7_data:
	M_ASN1_I2D_len(a->d.data,i2d_ASN1_OCTET_STRING);
	break;
	case NID_pkcs7_signed:
	M_ASN1_I2D_len(a->d.sign,i2d_PKCS7_SIGNED);
	break;
	case NID_pkcs7_enveloped:
	M_ASN1_I2D_len(a->d.enveloped,i2d_PKCS7_ENVELOPE);
	break;
	case NID_pkcs7_signedAndEnveloped:
	M_ASN1_I2D_len(a->d.signed_and_enveloped,
	i2d_PKCS7_SIGN_ENVELOPE);
	break;
	case NID_pkcs7_digest:
	M_ASN1_I2D_len(a->d.digest,i2d_PKCS7_DIGEST);
	break;
	case NID_pkcs7_encrypted:
	M_ASN1_I2D_len(a->d.encrypted,i2d_PKCS7_ENCRYPT);
	break;
	default:
	break;
	}
	}
	r=ret;
	if (pp == NULL) return(r);
	p= *pp;
	M_ASN1_I2D_INF_seq_start(V_ASN1_SEQUENCE,V_ASN1_UNIVERSAL);
	M_ASN1_I2D_put(a->type,i2d_ASN1_OBJECT);

	if (a->d.ptr != NULL)
	{
	M_ASN1_I2D_INF_seq_start(0,V_ASN1_CONTEXT_SPECIFIC);
	switch (OBJ_obj2nid(a->type))
	{
	case NID_pkcs7_data:
	M_ASN1_I2D_put(a->d.data,i2d_ASN1_OCTET_STRING);
	break;
	case NID_pkcs7_signed:
	M_ASN1_I2D_put(a->d.sign,i2d_PKCS7_SIGNED);
	break;
	case NID_pkcs7_enveloped:
	M_ASN1_I2D_put(a->d.enveloped,i2d_PKCS7_ENVELOPE);
	break;
	case NID_pkcs7_signedAndEnveloped:
	M_ASN1_I2D_put(a->d.signed_and_enveloped,
	i2d_PKCS7_SIGN_ENVELOPE);
	break;
	case NID_pkcs7_digest:
	M_ASN1_I2D_put(a->d.digest,i2d_PKCS7_DIGEST);
	break;
	case NID_pkcs7_encrypted:
	M_ASN1_I2D_put(a->d.encrypted,i2d_PKCS7_ENCRYPT);
	break;
	default:
	break;
	}
	M_ASN1_I2D_INF_seq_end();
	}
	M_ASN1_I2D_INF_seq_end();
	M_ASN1_I2D_finish();
	}

	PKCS7 d2i_PKCS7(PKCS7 a, unsigned char *pp, long length)
	{
	M_ASN1_D2I_vars(a,PKCS7 *,PKCS7_new);

	if ((a != NULL) && ((*a) != NULL))
	{
	if ((*a)->asn1 != NULL)
	{
	Free((char )(a)->asn1);
	(*a)->asn1=NULL;
	}
	(*a)->length=0;
	}

	M_ASN1_D2I_Init();
	M_ASN1_D2I_start_sequence();
	M_ASN1_D2I_get(ret->type,d2i_ASN1_OBJECT);
	if (!M_ASN1_D2I_end_sequence())
	{
	int Tinf,Ttag,Tclass;
	long Tlen;

	if (M_ASN1_next != (V_ASN1_CONSTRUCTED\|
	V_ASN1_CONTEXT_SPECIFIC\|0))
	{
	c.error=ASN1_R_BAD_PKCS7_CONTENT;
	c.line=__LINE__;
	goto err;
	}

	ret->detached=0;

	c.q=c.p;
	Tinf=ASN1_get_object(&c.p,&Tlen,&Ttag,&Tclass,
	(c.inf & 1)?(length+ *pp-c.q):c.slen);
	if (Tinf & 0x80) { c.line=__LINE__; goto err; }
	c.slen-=(c.p-c.q);

	switch (OBJ_obj2nid(ret->type))
	{
	case NID_pkcs7_data:
	M_ASN1_D2I_get(ret->d.data,d2i_ASN1_OCTET_STRING);
	break;
	case NID_pkcs7_signed:
	M_ASN1_D2I_get(ret->d.sign,d2i_PKCS7_SIGNED);
	if (ret->d.sign->contents->d.ptr == NULL)
	ret->detached=1;
	break;
	case NID_pkcs7_enveloped:
	M_ASN1_D2I_get(ret->d.enveloped,d2i_PKCS7_ENVELOPE);
	break;
	case NID_pkcs7_signedAndEnveloped:
	M_ASN1_D2I_get(ret->d.signed_and_enveloped,
	d2i_PKCS7_SIGN_ENVELOPE);
	break;
	case NID_pkcs7_digest:
	M_ASN1_D2I_get(ret->d.digest,d2i_PKCS7_DIGEST);
	break;
	case NID_pkcs7_encrypted:
	M_ASN1_D2I_get(ret->d.encrypted,d2i_PKCS7_ENCRYPT);
	break;
	default:
	c.error=ASN1_R_BAD_PKCS7_TYPE;
	c.line=__LINE__;
	goto err;
	/* break; */
	}
	if (Tinf == (1\|V_ASN1_CONSTRUCTED))
	{
	if (!ASN1_check_infinite_end(&c.p,c.slen))
	{
	c.error=ERR_R_MISSING_ASN1_EOS;
	c.line=__LINE__;
	goto err;
	}
	}
	}
	else
	ret->detached=1;

	M_ASN1_D2I_Finish(a,PKCS7_free,ASN1_F_D2I_PKCS7);
	}

	PKCS7 *PKCS7_new(void)
	{
	PKCS7 *ret=NULL;
	ASN1_CTX c;

	M_ASN1_New_Malloc(ret,PKCS7);
	ret->type=OBJ_nid2obj(NID_undef);
	ret->asn1=NULL;
	ret->length=0;
	ret->detached=0;
	ret->d.ptr=NULL;
	return(ret);
	M_ASN1_New_Error(ASN1_F_PKCS7_NEW);
	}

	void PKCS7_free(PKCS7 *a)
	{
	if (a == NULL) return;

	PKCS7_content_free(a);
	if (a->type != NULL)
	{
	ASN1_OBJECT_free(a->type);
	}
	Free((char )(char )a);
	}

	void PKCS7_content_free(PKCS7 *a)
	{
	if(a == NULL)
	return;

	if (a->asn1 != NULL) Free((char *)a->asn1);

	if (a->d.ptr != NULL)
	{
	if (a->type == NULL) return;

	switch (OBJ_obj2nid(a->type))
	{
	case NID_pkcs7_data:
	ASN1_OCTET_STRING_free(a->d.data);
	break;
	case NID_pkcs7_signed:
	PKCS7_SIGNED_free(a->d.sign);
	break;
	case NID_pkcs7_enveloped:
	PKCS7_ENVELOPE_free(a->d.enveloped);
	break;
	case NID_pkcs7_signedAndEnveloped:
	PKCS7_SIGN_ENVELOPE_free(a->d.signed_and_enveloped);
	break;
	case NID_pkcs7_digest:
	PKCS7_DIGEST_free(a->d.digest);
	break;
	case NID_pkcs7_encrypted:
	PKCS7_ENCRYPT_free(a->d.encrypted);
	break;
	default:
	/* MEMORY LEAK */
	break;
	}
	}
	a->d.ptr=NULL;
	}