if(in != NULL) BIO_free(in);
int MAIN(int argc, char **argv)	{	ENGINE *e = NULL;	int ret=1;	RSA *rsa=NULL;	int i,badops=0, sgckey=0;	const EVP_CIPHER *enc=NULL;	BIO *in=NULL,*out=NULL;	int informat,outformat,text=0,check=0,noout=0;	int pubin = 0, pubout = 0;	char *infile,*outfile,*prog;	char *passargin = NULL, *passargout = NULL;	char *passin = NULL, *passout = NULL;	char *engine=NULL;	int modulus=0;	apps_startup();	if (bio_err == NULL)		if ((bio_err=BIO_new(BIO_s_file())) != NULL)			BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);	infile=NULL;	outfile=NULL;	informat=FORMAT_PEM;	outformat=FORMAT_PEM;	prog=argv[0];	argc--;	argv++;	while (argc >= 1)		{		if 	(strcmp(*argv,"-inform") == 0)			{			if (--argc < 1) goto bad;			informat=str2fmt(*(++argv));			}		else if (strcmp(*argv,"-outform") == 0)			{			if (--argc < 1) goto bad;			outformat=str2fmt(*(++argv));			}		else if (strcmp(*argv,"-in") == 0)			{			if (--argc < 1) goto bad;			infile= *(++argv);			}		else if (strcmp(*argv,"-out") == 0)			{			if (--argc < 1) goto bad;			outfile= *(++argv);			}		else if (strcmp(*argv,"-passin") == 0)			{			if (--argc < 1) goto bad;			passargin= *(++argv);			}		else if (strcmp(*argv,"-passout") == 0)			{			if (--argc < 1) goto bad;			passargout= *(++argv);			}		else if (strcmp(*argv,"-engine") == 0)			{			if (--argc < 1) goto bad;			engine= *(++argv);			}		else if (strcmp(*argv,"-sgckey") == 0)			sgckey=1;		else if (strcmp(*argv,"-pubin") == 0)			pubin=1;		else if (strcmp(*argv,"-pubout") == 0)			pubout=1;		else if (strcmp(*argv,"-noout") == 0)			noout=1;		else if (strcmp(*argv,"-text") == 0)			text=1;		else if (strcmp(*argv,"-modulus") == 0)			modulus=1;		else if (strcmp(*argv,"-check") == 0)			check=1;		else if ((enc=EVP_get_cipherbyname(&(argv[0][1]))) == NULL)			{			BIO_printf(bio_err,"unknown option %s\n",*argv);			badops=1;			break;			}		argc--;		argv++;		}	if (badops)		{bad:		BIO_printf(bio_err,"%s [options] <infile >outfile\n",prog);		BIO_printf(bio_err,"where options are\n");		BIO_printf(bio_err," -inform arg     input format - one of DER NET PEM\n");		BIO_printf(bio_err," -outform arg    output format - one of DER NET PEM\n");		BIO_printf(bio_err," -in arg         input file\n");		BIO_printf(bio_err," -sgckey         Use IIS SGC key format\n");		BIO_printf(bio_err," -passin arg     input file pass phrase source\n");		BIO_printf(bio_err," -out arg        output file\n");		BIO_printf(bio_err," -passout arg    output file pass phrase source\n");		BIO_printf(bio_err," -des            encrypt PEM output with cbc des\n");		BIO_printf(bio_err," -des3           encrypt PEM output with ede cbc des using 168 bit key\n");#ifndef OPENSSL_NO_IDEA		BIO_printf(bio_err," -idea           encrypt PEM output with cbc idea\n");#endif		BIO_printf(bio_err," -text           print the key in text\n");		BIO_printf(bio_err," -noout          don't print key out\n");		BIO_printf(bio_err," -modulus        print the RSA key modulus\n");		BIO_printf(bio_err," -check          verify key consistency\n");		BIO_printf(bio_err," -pubin          expect a public key in input file\n");		BIO_printf(bio_err," -pubout         output a public key\n");		BIO_printf(bio_err," -engine e       use engine e, possibly a hardware device.\n");		goto end;		}	ERR_load_crypto_strings();        e = setup_engine(bio_err, engine, 0);	if(!app_passwd(bio_err, passargin, passargout, &passin, &passout)) {		BIO_printf(bio_err, "Error getting passwords\n");		goto end;	}	if(check && pubin) {		BIO_printf(bio_err, "Only private keys can be checked\n");		goto end;	}	in=BIO_new(BIO_s_file());	out=BIO_new(BIO_s_file());	if ((in == NULL) || (out == NULL))		{		ERR_print_errors(bio_err);		goto end;		}	if (infile == NULL)		BIO_set_fp(in,stdin,BIO_NOCLOSE);	else		{		if (BIO_read_filename(in,infile) <= 0)			{			perror(infile);			goto end;			}		}	BIO_printf(bio_err,"read RSA key\n");	if	(informat == FORMAT_ASN1) {		if (pubin) rsa=d2i_RSA_PUBKEY_bio(in,NULL);		else rsa=d2i_RSAPrivateKey_bio(in,NULL);	}#ifndef OPENSSL_NO_RC4	else if (informat == FORMAT_NETSCAPE)		{		BUF_MEM *buf=NULL;		const unsigned char *p;		int size=0;		buf=BUF_MEM_new();		for (;;)			{			if ((buf == NULL) || (!BUF_MEM_grow(buf,size+1024*10)))				goto end;			i=BIO_read(in,&(buf->data[size]),1024*10);			size+=i;			if (i == 0) break;			if (i < 0)				{				perror("reading private key");				BUF_MEM_free(buf);				goto end;				}			}		p=(unsigned char *)buf->data;		rsa=d2i_RSA_NET(NULL,&p,(long)size,NULL, sgckey);		BUF_MEM_free(buf);		}#endif	else if (informat == FORMAT_PEM) {		if(pubin) rsa=PEM_read_bio_RSA_PUBKEY(in,NULL,NULL,NULL);		else rsa=PEM_read_bio_RSAPrivateKey(in,NULL, NULL,passin);	}	else		{		BIO_printf(bio_err,"bad input format specified for key\n");		goto end;		}	if (rsa == NULL)		{		BIO_printf(bio_err,"unable to load key\n");		ERR_print_errors(bio_err);		goto end;		}	if (outfile == NULL)		{		BIO_set_fp(out,stdout,BIO_NOCLOSE);#ifdef OPENSSL_SYS_VMS		{		BIO *tmpbio = BIO_new(BIO_f_linebuffer());		out = BIO_push(tmpbio, out);		}#endif		}	else		{		if (BIO_write_filename(out,outfile) <= 0)			{			perror(outfile);			goto end;			}		}	if (text) 		if (!RSA_print(out,rsa,0))			{			perror(outfile);			ERR_print_errors(bio_err);			goto end;			}	if (modulus)		{		BIO_printf(out,"Modulus=");		BN_print(out,rsa->n);		BIO_printf(out,"\n");		}	if (check)		{		int r = RSA_check_key(rsa);		if (r == 1)			BIO_printf(out,"RSA key ok\n");		else if (r == 0)			{			long err;			while ((err = ERR_peek_error()) != 0 &&				ERR_GET_LIB(err) == ERR_LIB_RSA &&				ERR_GET_FUNC(err) == RSA_F_RSA_CHECK_KEY &&				ERR_GET_REASON(err) != ERR_R_MALLOC_FAILURE)				{				BIO_printf(out, "RSA key error: %s\n", ERR_reason_error_string(err));				ERR_get_error(); /* remove e from error stack */				}			}				if (r == -1 || ERR_peek_error() != 0) /* should happen only if r == -1 */			{			ERR_print_errors(bio_err);			goto end;			}		}			if (noout)		{		ret = 0;		goto end;		}	BIO_printf(bio_err,"writing RSA key\n");	if 	(outformat == FORMAT_ASN1) {		if(pubout || pubin) i=i2d_RSA_PUBKEY_bio(out,rsa);		else i=i2d_RSAPrivateKey_bio(out,rsa);	}#ifndef OPENSSL_NO_RC4	else if (outformat == FORMAT_NETSCAPE)		{		unsigned char *p,*pp;		int size;		i=1;		size=i2d_RSA_NET(rsa,NULL,NULL, sgckey);		if ((p=(unsigned char *)OPENSSL_malloc(size)) == NULL)			{			BIO_printf(bio_err,"Memory allocation failure\n");			goto end;			}		pp=p;		i2d_RSA_NET(rsa,&p,NULL, sgckey);		BIO_write(out,(char *)pp,size);		OPENSSL_free(pp);		}#endif	else if (outformat == FORMAT_PEM) {		if(pubout || pubin)		    i=PEM_write_bio_RSA_PUBKEY(out,rsa);		else i=PEM_write_bio_RSAPrivateKey(out,rsa,						enc,NULL,0,NULL,passout);	} else	{		BIO_printf(bio_err,"bad output format specified for outfile\n");		goto end;		}	if (!i)		{		BIO_printf(bio_err,"unable to write key\n");		ERR_print_errors(bio_err);		}	else		ret=0;end:	if(in != NULL) BIO_free(in);	if(out != NULL) BIO_free_all(out);	if(rsa != NULL) RSA_free(rsa);	if(passin) OPENSSL_free(passin);	if(passout) OPENSSL_free(passout);	apps_shutdown();	EXIT(ret);	}