/* crypto/asn1/asn1_par.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.]

 */

 /*

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

 */

#include <stdio.h>

#include "cryptlib.h"

#include <openssl/buffer.h>

#include <openssl/objects.h>

#include <openssl/asn1.h>

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

#include "libcrypto_wsd.h"

#include "libcrypto_wsd_macros.h"

#endif

static int asn1_print_info(BIO *bp, int tag, int xclass,int constructed,

	int indent);

static int asn1_parse2(BIO *bp, const unsigned char **pp, long length,

	int offset, int depth, int indent, int dump);

static int asn1_print_info(BIO *bp, int tag, int xclass, int constructed,

	     int indent)

	{

	static const char fmt[]="%-18s";

	static const char fmt2[]="%2d %-15s";

#ifndef SYMBIAN	

	char str[128];

#else

  char str[50];

#endif	

	const char *p,*p2=NULL;

	if (constructed & V_ASN1_CONSTRUCTED)

		p="cons: ";

	else

		p="prim: ";

	if (BIO_write(bp,p,6) < 6) goto err;

	BIO_indent(bp,indent,128);

	p=str;

	if ((xclass & V_ASN1_PRIVATE) == V_ASN1_PRIVATE)

		BIO_snprintf(str,sizeof str,"priv [ %d ] ",tag);

	else if ((xclass & V_ASN1_CONTEXT_SPECIFIC) == V_ASN1_CONTEXT_SPECIFIC)

		BIO_snprintf(str,sizeof str,"cont [ %d ]",tag);

	else if ((xclass & V_ASN1_APPLICATION) == V_ASN1_APPLICATION)

		BIO_snprintf(str,sizeof str,"appl [ %d ]",tag);

	else if (tag > 30)

		BIO_snprintf(str,sizeof str,"<ASN1 %d>",tag);

	else p = ASN1_tag2str(tag);

	if (p2 != NULL)

		{

		if (BIO_printf(bp,fmt2,tag,p2) <= 0) goto err;

		}

	else

		{

		if (BIO_printf(bp,fmt,p) <= 0) goto err;

		}

	return(1);

err:

	return(0);

	}

EXPORT_C int ASN1_parse(BIO *bp, const unsigned char *pp, long len, int indent)

	{

	return(asn1_parse2(bp,&pp,len,0,0,indent,0));

	}

EXPORT_C int ASN1_parse_dump(BIO *bp, const unsigned char *pp, long len, int indent, int dump)

	{

	return(asn1_parse2(bp,&pp,len,0,0,indent,dump));

	}

static int asn1_parse2(BIO *bp, const unsigned char **pp, long length, int offset,

	     int depth, int indent, int dump)

	{

	const unsigned char *p,*ep,*tot,*op,*opp;

	long len;

	int tag,xclass,ret=0;

	int nl,hl,j,r;

	ASN1_OBJECT *o=NULL;

	ASN1_OCTET_STRING *os=NULL;

	/* ASN1_BMPSTRING *bmp=NULL;*/

	int dump_indent;

#if 0

	dump_indent = indent;

#else

	dump_indent = 6;	/* Because we know BIO_dump_indent() */

#endif

	p= *pp;

	tot=p+length;

	op=p-1;

	while ((p < tot) && (op < p))

		{

		op=p;

		j=ASN1_get_object(&p,&len,&tag,&xclass,length);

#ifdef LINT

		j=j;

#endif

		if (j & 0x80)

			{

			if (BIO_write(bp,"Error in encoding\n",18) <= 0)

				goto end;

			ret=0;

			goto end;

			}

		hl=(p-op);

		length-=hl;

		/* if j == 0x21 it is a constructed indefinite length object */

		if (BIO_printf(bp,"%5ld:",(long)offset+(long)(op- *pp))

			<= 0) goto end;

		if (j != (V_ASN1_CONSTRUCTED | 1))

			{

			if (BIO_printf(bp,"d=%-2d hl=%ld l=%4ld ",

				depth,(long)hl,len) <= 0)

				goto end;

			}

		else

			{

			if (BIO_printf(bp,"d=%-2d hl=%ld l=inf  ",

				depth,(long)hl) <= 0)

				goto end;

			}

		if (!asn1_print_info(bp,tag,xclass,j,(indent)?depth:0))

			goto end;

		if (j & V_ASN1_CONSTRUCTED)

			{

			ep=p+len;

			if (BIO_write(bp,"\n",1) <= 0) goto end;

			if (len > length)

				{

				BIO_printf(bp,

					"length is greater than %ld\n",length);

				ret=0;

				goto end;

				}

			if ((j == 0x21) && (len == 0))

				{

				for (;;)

					{

					r=asn1_parse2(bp,&p,(long)(tot-p),

						offset+(p - *pp),depth+1,

						indent,dump);

					if (r == 0) { ret=0; goto end; }

					if ((r == 2) || (p >= tot)) break;

					}

				}

			else

				while (p < ep)

					{

					r=asn1_parse2(bp,&p,(long)len,

						offset+(p - *pp),depth+1,

						indent,dump);

					if (r == 0) { ret=0; goto end; }

					}

			}

		else if (xclass != 0)

			{

			p+=len;

			if (BIO_write(bp,"\n",1) <= 0) goto end;

			}

		else

			{

			nl=0;

			if (	(tag == V_ASN1_PRINTABLESTRING) ||

				(tag == V_ASN1_T61STRING) ||

				(tag == V_ASN1_IA5STRING) ||

				(tag == V_ASN1_VISIBLESTRING) ||

				(tag == V_ASN1_UTCTIME) ||

				(tag == V_ASN1_GENERALIZEDTIME))

				{

				if (BIO_write(bp,":",1) <= 0) goto end;

				if ((len > 0) &&

					BIO_write(bp,(const char *)p,(int)len)

					!= (int)len)

					goto end;

				}

			else if (tag == V_ASN1_OBJECT)

				{

				opp=op;

				if (d2i_ASN1_OBJECT(&o,&opp,len+hl) != NULL)

					{

					if (BIO_write(bp,":",1) <= 0) goto end;

					i2a_ASN1_OBJECT(bp,o);

					}

				else

					{

					if (BIO_write(bp,":BAD OBJECT",11) <= 0)

						goto end;

					}

				}

			else if (tag == V_ASN1_BOOLEAN)

				{

				int ii;

				opp=op;

				ii=d2i_ASN1_BOOLEAN(NULL,&opp,len+hl);

				if (ii < 0)

					{

					if (BIO_write(bp,"Bad boolean\n",12))

						goto end;

					}

				BIO_printf(bp,":%d",ii);

				}

			else if (tag == V_ASN1_BMPSTRING)

				{

				/* do the BMP thang */

				}

			else if (tag == V_ASN1_OCTET_STRING)

				{

				int i,printable=1;

				opp=op;

				os=d2i_ASN1_OCTET_STRING(NULL,&opp,len+hl);

				if (os != NULL && os->length > 0)

					{

					opp = os->data;

					/* testing whether the octet string is

					 * printable */

					for (i=0; i<os->length; i++)

						{

						if ((	(opp[i] < ' ') &&

							(opp[i] != '\n') &&

							(opp[i] != '\r') &&

							(opp[i] != '\t')) ||

							(opp[i] > '~'))

							{

							printable=0;

							break;

							}

						}

					if (printable)

					/* printable string */

						{

						if (BIO_write(bp,":",1) <= 0)

							goto end;

						if (BIO_write(bp,(const char *)opp,

							os->length) <= 0)

							goto end;

						}

					else if (!dump)

					/* not printable => print octet string

					 * as hex dump */

						{

						if (BIO_write(bp,"[HEX DUMP]:",11) <= 0)

							goto end;

						for (i=0; i<os->length; i++)

							{

							if (BIO_printf(bp,"%02X"

								, opp[i]) <= 0)

								goto end;

							}

						}

					else

					/* print the normal dump */

						{

						if (!nl) 

							{

							if (BIO_write(bp,"\n",1) <= 0)

								goto end;

							}

						if (BIO_dump_indent(bp,

							(const char *)opp,

							((dump == -1 || dump > 

							os->length)?os->length:dump),

							dump_indent) <= 0)

							goto end;

						nl=1;

						}

					}

				if (os != NULL)

					{

					M_ASN1_OCTET_STRING_free(os);

					os=NULL;

					}

				}

			else if (tag == V_ASN1_INTEGER)

				{

				ASN1_INTEGER *bs;

				int i;

				opp=op;

				bs=d2i_ASN1_INTEGER(NULL,&opp,len+hl);

				if (bs != NULL)

					{

					if (BIO_write(bp,":",1) <= 0) goto end;

					if (bs->type == V_ASN1_NEG_INTEGER)

						if (BIO_write(bp,"-",1) <= 0)

							goto end;

					for (i=0; i<bs->length; i++)

						{

						if (BIO_printf(bp,"%02X",

							bs->data[i]) <= 0)

							goto end;

						}

					if (bs->length == 0)

						{

						if (BIO_write(bp,"00",2) <= 0)

							goto end;

						}

					}

				else

					{

					if (BIO_write(bp,"BAD INTEGER",11) <= 0)

						goto end;

					}

				M_ASN1_INTEGER_free(bs);

				}

			else if (tag == V_ASN1_ENUMERATED)

				{

				ASN1_ENUMERATED *bs;

				int i;

				opp=op;

				bs=d2i_ASN1_ENUMERATED(NULL,&opp,len+hl);

				if (bs != NULL)

					{

					if (BIO_write(bp,":",1) <= 0) goto end;

					if (bs->type == V_ASN1_NEG_ENUMERATED)

						if (BIO_write(bp,"-",1) <= 0)

							goto end;

					for (i=0; i<bs->length; i++)

						{

						if (BIO_printf(bp,"%02X",

							bs->data[i]) <= 0)

							goto end;

						}

					if (bs->length == 0)

						{

						if (BIO_write(bp,"00",2) <= 0)

							goto end;

						}

					}

				else

					{

					if (BIO_write(bp,"BAD ENUMERATED",11) <= 0)

						goto end;

					}

				M_ASN1_ENUMERATED_free(bs);

				}

			else if (len > 0 && dump)

				{

				if (!nl) 

					{

					if (BIO_write(bp,"\n",1) <= 0)

						goto end;

					}

				if (BIO_dump_indent(bp,(const char *)p,

					((dump == -1 || dump > len)?len:dump),

					dump_indent) <= 0)

					goto end;

				nl=1;

				}

			if (!nl) 

				{

				if (BIO_write(bp,"\n",1) <= 0) goto end;

				}

			p+=len;

			if ((tag == V_ASN1_EOC) && (xclass == 0))

				{

				ret=2; /* End of sequence */

				goto end;

				}

			}

		length-=len;

		}

	ret=1;

end:

	if (o != NULL) ASN1_OBJECT_free(o);

	if (os != NULL) M_ASN1_OCTET_STRING_free(os);

	*pp=p;

	return(ret);

	}

EXPORT_C const char *ASN1_tag2str(int tag)

{

#ifndef EMULATOR

	static const char *tag2str[] = {

	 "EOC", "BOOLEAN", "INTEGER", "BIT STRING", "OCTET STRING", /* 0-4 */

	 "NULL", "OBJECT", "OBJECT DESCRIPTOR", "EXTERNAL", "REAL", /* 5-9 */

	 "ENUMERATED", "<ASN1 11>", "UTF8STRING", "<ASN1 13>", 	    /* 10-13 */

	"<ASN1 14>", "<ASN1 15>", "SEQUENCE", "SET", 		    /* 15-17 */

	"NUMERICSTRING", "PRINTABLESTRING", "T61STRING",	    /* 18-20 */

	"VIDEOTEXSTRING", "IA5STRING", "UTCTIME","GENERALIZEDTIME", /* 21-24 */

	"GRAPHICSTRING", "VISIBLESTRING", "GENERALSTRING",	    /* 25-27 */

	"UNIVERSALSTRING", "<ASN1 29>", "BMPSTRING"		    /* 28-30 */

	};

#else

	static const char *const tag2str[] = {

	 "EOC", "BOOLEAN", "INTEGER", "BIT STRING", "OCTET STRING", /* 0-4 */

	 "NULL", "OBJECT", "OBJECT DESCRIPTOR", "EXTERNAL", "REAL", /* 5-9 */

	 "ENUMERATED", "<ASN1 11>", "UTF8STRING", "<ASN1 13>", 	    /* 10-13 */

	"<ASN1 14>", "<ASN1 15>", "SEQUENCE", "SET", 		    /* 15-17 */

	"NUMERICSTRING", "PRINTABLESTRING", "T61STRING",	    /* 18-20 */

	"VIDEOTEXSTRING", "IA5STRING", "UTCTIME","GENERALIZEDTIME", /* 21-24 */

	"GRAPHICSTRING", "VISIBLESTRING", "GENERALSTRING",	    /* 25-27 */

	"UNIVERSALSTRING", "<ASN1 29>", "BMPSTRING"		    /* 28-30 */

	};

#endif

	if((tag == V_ASN1_NEG_INTEGER) || (tag == V_ASN1_NEG_ENUMERATED))

							tag &= ~0x100;

	if(tag < 0 || tag > 30) return "(unknown)";

	return tag2str[tag];

}