/* crypto/asn1/t_req.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/buffer.h>
#include <openssl/bn.h>
#include <openssl/objects.h>
#include <openssl/x509.h>
#include <openssl/x509v3.h>

#ifndef OPENSSL_NO_FP_API
int X509_REQ_print_fp(FILE *fp, X509_REQ *x)
        {
        BIO *b;
        int ret;

        if ((b=BIO_new(BIO_s_file())) == NULL)
		{
		X509err(X509_F_X509_REQ_PRINT_FP,ERR_R_BUF_LIB);
                return(0);
		}
        BIO_set_fp(b,fp,BIO_NOCLOSE);
        ret=X509_REQ_print(b, x);
        BIO_free(b);
        return(ret);
        }
#endif

int X509_REQ_print_ex(BIO *bp, X509_REQ *x, unsigned long nmflags, unsigned long cflag)
	{
	unsigned long l;
	int i;
	const char *neg;
	X509_REQ_INFO *ri;
	EVP_PKEY *pkey;
	STACK_OF(X509_ATTRIBUTE) *sk;
	STACK_OF(X509_EXTENSION) *exts;
	char str[128];
	char mlch = ' ';
	int nmindent = 0;

	if((nmflags & XN_FLAG_SEP_MASK) == XN_FLAG_SEP_MULTILINE) {
		mlch = '\n';
		nmindent = 12;
	}

	if(nmflags == X509_FLAG_COMPAT)
		nmindent = 16;


	ri=x->req_info;
	if(!(cflag & X509_FLAG_NO_HEADER))
		{
		if (BIO_write(bp,"Certificate Request:\n",21) <= 0) goto err;
		if (BIO_write(bp,"    Data:\n",10) <= 0) goto err;
		}
	if(!(cflag & X509_FLAG_NO_VERSION))
		{
		neg=(ri->version->type == V_ASN1_NEG_INTEGER)?"-":"";
		l=0;
		for (i=0; i<ri->version->length; i++)
			{ l<<=8; l+=ri->version->data[i]; }
		sprintf(str,"%8sVersion: %s%lu (%s0x%lx)\n","",neg,l,neg,l);
		if (BIO_puts(bp,str) <= 0) goto err;
		}
        if(!(cflag & X509_FLAG_NO_SUBJECT))
                {
                if (BIO_printf(bp,"        Subject:%c",mlch) <= 0) goto err;
                if (X509_NAME_print_ex(bp,ri->subject,nmindent, nmflags) < 0) goto err;
                if (BIO_write(bp,"\n",1) <= 0) goto err;
                }
	if(!(cflag & X509_FLAG_NO_PUBKEY))
		{
		if (BIO_write(bp,"        Subject Public Key Info:\n",33) <= 0)
			goto err;
		if (BIO_printf(bp,"%12sPublic Key Algorithm: ","") <= 0)
			goto err;
		if (i2a_ASN1_OBJECT(bp, ri->pubkey->algor->algorithm) <= 0)
			goto err;
		if (BIO_puts(bp, "\n") <= 0)
			goto err;

		pkey=X509_REQ_get_pubkey(x);
		if (pkey == NULL)
			{
			BIO_printf(bp,"%12sUnable to load Public Key\n","");
			ERR_print_errors(bp);
			}
		else
#ifndef OPENSSL_NO_RSA
		if (pkey->type == EVP_PKEY_RSA)
			{
			BIO_printf(bp,"%12sRSA Public Key: (%d bit)\n","",
			BN_num_bits(pkey->pkey.rsa->n));
			RSA_print(bp,pkey->pkey.rsa,16);
			}
		else
#endif
#ifndef OPENSSL_NO_DSA
		if (pkey->type == EVP_PKEY_DSA)
			{
			BIO_printf(bp,"%12sDSA Public Key:\n","");
			DSA_print(bp,pkey->pkey.dsa,16);
			}
		else
#endif
			BIO_printf(bp,"%12sUnknown Public Key:\n","");

		EVP_PKEY_free(pkey);
		}

	if(!(cflag & X509_FLAG_NO_ATTRIBUTES))
		{
		/* may not be */
		sprintf(str,"%8sAttributes:\n","");
		if (BIO_puts(bp,str) <= 0) goto err;

		sk=x->req_info->attributes;
		if (sk_X509_ATTRIBUTE_num(sk) == 0)
			{
			sprintf(str,"%12sa0:00\n","");
			if (BIO_puts(bp,str) <= 0) goto err;
			}
		else
			{
			for (i=0; i<sk_X509_ATTRIBUTE_num(sk); i++)
				{
				ASN1_TYPE *at;
				X509_ATTRIBUTE *a;
				ASN1_BIT_STRING *bs=NULL;
				ASN1_TYPE *t;
				int j,type=0,count=1,ii=0;

				a=sk_X509_ATTRIBUTE_value(sk,i);
				if(X509_REQ_extension_nid(OBJ_obj2nid(a->object)))
									continue;
				sprintf(str,"%12s","");
				if (BIO_puts(bp,str) <= 0) goto err;
				if ((j=i2a_ASN1_OBJECT(bp,a->object)) > 0)
				{
				if (a->single)
					{
					t=a->value.single;
					type=t->type;
					bs=t->value.bit_string;
					}
				else
					{
					ii=0;
					count=sk_ASN1_TYPE_num(a->value.set);
get_next:
					at=sk_ASN1_TYPE_value(a->value.set,ii);
					type=at->type;
					bs=at->value.asn1_string;
					}
				}
				for (j=25-j; j>0; j--)
					if (BIO_write(bp," ",1) != 1) goto err;
				if (BIO_puts(bp,":") <= 0) goto err;
				if (	(type == V_ASN1_PRINTABLESTRING) ||
					(type == V_ASN1_T61STRING) ||
					(type == V_ASN1_IA5STRING))
					{
					if (BIO_write(bp,(char *)bs->data,bs->length)
						!= bs->length)
						goto err;
					BIO_puts(bp,"\n");
					}
				else
					{
					BIO_puts(bp,"unable to print attribute\n");
					}
				if (++ii < count) goto get_next;
				}
			}
		}
	if(!(cflag & X509_FLAG_NO_ATTRIBUTES))
		{
		exts = X509_REQ_get_extensions(x);
		if(exts)
			{
			BIO_printf(bp,"%8sRequested Extensions:\n","");
			for (i=0; i<sk_X509_EXTENSION_num(exts); i++)
				{
				ASN1_OBJECT *obj;
				X509_EXTENSION *ex;
				int j;
				ex=sk_X509_EXTENSION_value(exts, i);
				if (BIO_printf(bp,"%12s","") <= 0) goto err;
				obj=X509_EXTENSION_get_object(ex);
				i2a_ASN1_OBJECT(bp,obj);
				j=X509_EXTENSION_get_critical(ex);
				if (BIO_printf(bp,": %s\n",j?"critical":"","") <= 0)
					goto err;
				if(!X509V3_EXT_print(bp, ex, 0, 16))
					{
					BIO_printf(bp, "%16s", "");
					M_ASN1_OCTET_STRING_print(bp,ex->value);
					}
				if (BIO_write(bp,"\n",1) <= 0) goto err;
				}
			sk_X509_EXTENSION_pop_free(exts, X509_EXTENSION_free);
			}
		}

	if(!(cflag & X509_FLAG_NO_SIGDUMP))
		{
		if(!X509_signature_print(bp, x->sig_alg, x->signature)) goto err;
		}

	return(1);
err:
	X509err(X509_F_X509_REQ_PRINT,ERR_R_BUF_LIB);
	return(0);
	}

int X509_REQ_print(BIO *bp, X509_REQ *x)
	{
	return X509_REQ_print_ex(bp, x, XN_FLAG_COMPAT, X509_FLAG_COMPAT);
	}