if (dh->length) printf("\tdh->length = %d\n", dh->length);
int MAIN(int argc, char **argv)	{	DH *dh=NULL;	int i,badops=0,text=0;	BIO *in=NULL,*out=NULL;	int informat,outformat,check=0,noout=0,C=0,ret=1;	char *infile,*outfile,*prog;	char *inrand=NULL;	int num = 0, g = 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,"-check") == 0)			check=1;		else if (strcmp(*argv,"-text") == 0)			text=1;		else if (strcmp(*argv,"-C") == 0)			C=1;		else if (strcmp(*argv,"-noout") == 0)			noout=1;		else if (strcmp(*argv,"-2") == 0)			g=2;		else if (strcmp(*argv,"-5") == 0)			g=5;		else if (strcmp(*argv,"-rand") == 0)			{			if (--argc < 1) goto bad;			inrand= *(++argv);			}		else if (((sscanf(*argv,"%d",&num) == 0) || (num <= 0)))			goto bad;		argv++;		argc--;		}	if (badops)		{bad:		BIO_printf(bio_err,"%s [options] [numbits]\n",prog);		BIO_printf(bio_err,"where options are\n");		BIO_printf(bio_err," -inform arg   input format - one of DER PEM\n");		BIO_printf(bio_err," -outform arg  output format - one of DER PEM\n");		BIO_printf(bio_err," -in arg       input file\n");		BIO_printf(bio_err," -out arg      output file\n");		BIO_printf(bio_err," -check        check the DH parameters\n");		BIO_printf(bio_err," -text         print a text form of the DH parameters\n");		BIO_printf(bio_err," -C            Output C code\n");		BIO_printf(bio_err," -2            generate parameters using  2 as the generator value\n");		BIO_printf(bio_err," -5            generate parameters using  5 as the generator value\n");		BIO_printf(bio_err," numbits       number of bits in to generate (default 512)\n");		BIO_printf(bio_err," -rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR);		BIO_printf(bio_err,"               - load the file (or the files in the directory) into\n");		BIO_printf(bio_err,"               the random number generator\n");		BIO_printf(bio_err," -noout        no output\n");		goto end;		}	ERR_load_crypto_strings();	if(g && !num) num = DEFBITS;	else if(num && !g) g = 2;	if(num) {		if (!app_RAND_load_file(NULL, bio_err, 1) && inrand == NULL)			{			BIO_printf(bio_err,"warning, not much extra random data, consider using the -rand option\n");			}		if (inrand != NULL)			BIO_printf(bio_err,"%ld semi-random bytes loaded\n",				app_RAND_load_files(inrand));		BIO_printf(bio_err,"Generating DH parameters, %d bit long strong prime, generator of %d\n",num,g);		BIO_printf(bio_err,"This is going to take a long time\n");		dh=DH_generate_parameters(num,g,dh_cb,bio_err);					if (dh == NULL) goto end;		app_RAND_write_file(NULL, bio_err);	} else {		in=BIO_new(BIO_s_file());		if (in == 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;				}			}		if	(informat == FORMAT_ASN1)			dh=d2i_DHparams_bio(in,NULL);		else if (informat == FORMAT_PEM)			dh=PEM_read_bio_DHparams(in,NULL,NULL,NULL);		else			{			BIO_printf(bio_err,"bad input format specified\n");			goto end;			}		if (dh == NULL)			{			BIO_printf(bio_err,"unable to load DH parameters\n");			ERR_print_errors(bio_err);			goto end;			}	}	out=BIO_new(BIO_s_file());	if (out == NULL)		{		ERR_print_errors(bio_err);		goto end;		}	if (outfile == NULL)		BIO_set_fp(out,stdout,BIO_NOCLOSE);	else		{		if (BIO_write_filename(out,outfile) <= 0)			{			perror(outfile);			goto end;			}		}		if (text)		{		DHparams_print(out,dh);		}		if (check)		{		if (!DH_check(dh,&i))			{			ERR_print_errors(bio_err);			goto end;			}		if (i & DH_CHECK_P_NOT_PRIME)			printf("p value is not prime\n");		if (i & DH_CHECK_P_NOT_STRONG_PRIME)			printf("p value is not a strong prime\n");		if (i & DH_UNABLE_TO_CHECK_GENERATOR)			printf("unable to check the generator value\n");		if (i & DH_NOT_SUITABLE_GENERATOR)			printf("the g value is not a generator\n");		if (i == 0)			printf("DH parameters appear to be ok.\n");		}	if (C)		{		unsigned char *data;		int len,l,bits;		len=BN_num_bytes(dh->p);		bits=BN_num_bits(dh->p);		data=(unsigned char *)Malloc(len);		if (data == NULL)			{			perror("Malloc");			goto end;			}		l=BN_bn2bin(dh->p,data);		printf("static unsigned char dh%d_p[]={",bits);		for (i=0; i<l; i++)			{			if ((i%12) == 0) printf("\n\t");			printf("0x%02X,",data[i]);			}		printf("\n\t};\n");		l=BN_bn2bin(dh->g,data);		printf("static unsigned char dh%d_g[]={",bits);		for (i=0; i<l; i++)			{			if ((i%12) == 0) printf("\n\t");			printf("0x%02X,",data[i]);			}		printf("\n\t};\n\n");		printf("DH *get_dh%d()\n\t{\n",bits);		printf("\tDH *dh;\n\n");		printf("\tif ((dh=DH_new()) == NULL) return(NULL);\n");		printf("\tdh->p=BN_bin2bn(dh%d_p,sizeof(dh%d_p),NULL);\n",			bits,bits);		printf("\tdh->g=BN_bin2bn(dh%d_g,sizeof(dh%d_g),NULL);\n",			bits,bits);		printf("\tif ((dh->p == NULL) || (dh->g == NULL))\n");		printf("\t\treturn(NULL);\n");		printf("\treturn(dh);\n\t}\n");		Free(data);		}	if (!noout)		{		if 	(outformat == FORMAT_ASN1)			i=i2d_DHparams_bio(out,dh);		else if (outformat == FORMAT_PEM)			i=PEM_write_bio_DHparams(out,dh);		else	{			BIO_printf(bio_err,"bad output format specified for outfile\n");			goto end;			}		if (!i)			{			BIO_printf(bio_err,"unable to write DH parameters\n");			ERR_print_errors(bio_err);			goto end;			}		}	ret=0;end:	if (in != NULL) BIO_free(in);	if (out != NULL) BIO_free(out);	if (dh != NULL) DH_free(dh);	EXIT(ret);	}