req.c

openssl中req程序的VC实现

			goto end;
			}
		}
	else
		{
		req_conf=config;
		BIO_printf(bio_err,"Using configuration from %s\n",
			default_config_file);
		if (req_conf == NULL)
			{
			BIO_printf(bio_err,"Unable to load config info\n");
			}
		}

	if (req_conf != NULL)
		{
		p=CONF_get_string(req_conf,NULL,"oid_file");
		if (p != NULL)
			{
			BIO *oid_bio;

			oid_bio=BIO_new_file(p,"r");
			if (oid_bio == NULL) 
				{
				/*
				BIO_printf(bio_err,"problems opening %s for extra oid's\n",p);
				ERR_print_errors(bio_err);
				*/
				}
			else
				{
				OBJ_create_objects(oid_bio);
				BIO_free(oid_bio);
				}
			}
		}
		if(!add_oid_section(bio_err, req_conf)) goto end;

	if ((md_alg == NULL) &&
		((p=CONF_get_string(req_conf,SECTION,"default_md")) != NULL))
		{
		if ((md_alg=EVP_get_digestbyname(p)) != NULL)
			digest=md_alg;
		}

	if(!extensions)
		extensions = CONF_get_string(req_conf, SECTION, V3_EXTENSIONS);
	if(extensions) {
		/* Check syntax of file */
		X509V3_CTX ctx;
		X509V3_set_ctx_test(&ctx);
		X509V3_set_conf_lhash(&ctx, req_conf);
		if(!X509V3_EXT_add_conf(req_conf, &ctx, extensions, NULL)) {
			BIO_printf(bio_err,
			 "Error Loading extension section %s\n", extensions);
			goto end;
		}
	}

	if(!passin)
		passin = CONF_get_string(req_conf, SECTION, "input_password");

	if(!passout)
		passout = CONF_get_string(req_conf, SECTION, "output_password");

	p = CONF_get_string(req_conf, SECTION, STRING_MASK);

	if(p && !ASN1_STRING_set_default_mask_asc(p)) {
		BIO_printf(bio_err, "Invalid global string mask setting %s\n", p);
		goto end;
	}

	if(!req_exts)
		req_exts = CONF_get_string(req_conf, SECTION, REQ_EXTENSIONS);
	if(req_exts) {
		/* Check syntax of file */
		X509V3_CTX ctx;
		X509V3_set_ctx_test(&ctx);
		X509V3_set_conf_lhash(&ctx, req_conf);
		if(!X509V3_EXT_add_conf(req_conf, &ctx, req_exts, NULL)) {
			BIO_printf(bio_err,
			 "Error Loading request extension section %s\n",
								req_exts);
			goto end;
		}
	}

	in=BIO_new(BIO_s_file());
	out=BIO_new(BIO_s_file());
	if ((in == NULL) || (out == NULL))
		goto end;

	if (keyfile != NULL)
		{
		if (BIO_read_filename(in,keyfile) <= 0)
			{
			perror(keyfile);
			goto end;
			}

		if (keyform == FORMAT_ASN1)
			pkey=d2i_PrivateKey_bio(in,NULL);
		else if (keyform == FORMAT_PEM)
			{
			pkey=PEM_read_bio_PrivateKey(in,NULL,NULL,passin);
			}
		else
			{
			BIO_printf(bio_err,"bad input format specified for X509 request\n");
			goto end;
			}

		if (pkey == NULL)
			{
			BIO_printf(bio_err,"unable to load Private key\n");
			goto end;
			}
                if (EVP_PKEY_type(pkey->type) == EVP_PKEY_DSA)
			{
			char *randfile = CONF_get_string(req_conf,SECTION,"RANDFILE");
			app_RAND_load_file(randfile, bio_err, 0);
                	}
		}

	if (newreq && (pkey == NULL))
		{
		char *randfile = CONF_get_string(req_conf,SECTION,"RANDFILE");
		app_RAND_load_file(randfile, bio_err, 0);
		if (inrand)
			app_RAND_load_files(inrand);
	
		if (newkey <= 0)
			{
			newkey=(int)CONF_get_number(req_conf,SECTION,BITS);
			if (newkey <= 0)
				newkey=DEFAULT_KEY_LENGTH;
			}

		if (newkey < MIN_KEY_LENGTH)
			{
			BIO_printf(bio_err,"private key length is too short,\n");
			BIO_printf(bio_err,"it needs to be at least %d bits, not %d\n",MIN_KEY_LENGTH,newkey);
			goto end;
			}
		BIO_printf(bio_err,"Generating a %d bit %s private key\n",
			newkey,(pkey_type == TYPE_RSA)?"RSA":"DSA");

		if ((pkey=EVP_PKEY_new()) == NULL) goto end;

#ifndef NO_RSA
		if (pkey_type == TYPE_RSA)
			{
			if (!EVP_PKEY_assign_RSA(pkey,
				RSA_generate_key(newkey,0x10001,
					req_cb,bio_err)))
				goto end;
			}
		else
#endif
#ifndef NO_DSA
			if (pkey_type == TYPE_DSA)
			{
			if (!DSA_generate_key(dsa_params)) goto end;
			if (!EVP_PKEY_assign_DSA(pkey,dsa_params)) goto end;
			dsa_params=NULL;
			}
#endif

		app_RAND_write_file(randfile, bio_err);

		if (pkey == NULL) goto end;

		if (keyout == NULL)
			keyout=CONF_get_string(req_conf,SECTION,KEYFILE);

		if (keyout == NULL)
			{
			BIO_printf(bio_err,"writing new private key to stdout\n");
			BIO_set_fp(out,stdout,BIO_NOCLOSE);
#ifdef VMS
			{
			BIO *tmpbio = BIO_new(BIO_f_linebuffer());
			out = BIO_push(tmpbio, out);
			}
#endif
			}
		else
			{
			BIO_printf(bio_err,"writing new private key to '%s'\n",keyout);
			if (BIO_write_filename(out,keyout) <= 0)
				{
				perror(keyout);
				goto end;
				}
			}

		p=CONF_get_string(req_conf,SECTION,"encrypt_rsa_key");
		if (p == NULL)
			p=CONF_get_string(req_conf,SECTION,"encrypt_key");
		if ((p != NULL) && (strcmp(p,"no") == 0))
			cipher=NULL;
		if (nodes) cipher=NULL;
		
		i=0;
loop:
		if (!PEM_write_bio_PrivateKey(out,pkey,cipher,
			NULL,0,NULL,passout))
			{
			if ((ERR_GET_REASON(ERR_peek_error()) ==
				PEM_R_PROBLEMS_GETTING_PASSWORD) && (i < 3))
				{
				ERR_clear_error();
				i++;
				goto loop;
				}
			goto end;
			}
		BIO_printf(bio_err,"-----\n");
		}

	if (!newreq)
		{
		/* Since we are using a pre-existing certificate
		 * request, the kludge 'format' info should not be
		 * changed. */
		kludge= -1;
		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)
			req=d2i_X509_REQ_bio(in,NULL);
		else if (informat == FORMAT_PEM)
			req=PEM_read_bio_X509_REQ(in,NULL,NULL,NULL);
		else
			{
			BIO_printf(bio_err,"bad input format specified for X509 request\n");
			goto end;
			}
		if (req == NULL)
			{
			BIO_printf(bio_err,"unable to load X509 request\n");
			goto end;
			}
		}

	if (newreq || x509)
		{
		if (pkey == NULL)
			{
			BIO_printf(bio_err,"you need to specify a private key\n");
			goto end;
			}
#ifndef NO_DSA
		if (pkey->type == EVP_PKEY_DSA)
			digest=EVP_dss1();
#endif
		if (req == NULL)
			{
			req=X509_REQ_new();
			if (req == NULL)
				{
				goto end;
				}

			i=make_REQ(req,pkey,!x509);
			if (kludge >= 0)
				req->req_info->req_kludge=kludge;
			if (!i)
				{
				BIO_printf(bio_err,"problems making Certificate Request\n");
				goto end;
				}
			}
		if (x509)
			{
			EVP_PKEY *tmppkey;
			X509V3_CTX ext_ctx;
			if ((x509ss=X509_new()) == NULL) goto end;

			/* Set version to V3 */
			if(!X509_set_version(x509ss, 2)) goto end;
			if (!ASN1_INTEGER_set(X509_get_serialNumber(x509ss),0L)) goto end;

			if (!X509_set_issuer_name(x509ss, X509_REQ_get_subject_name(req))) goto end;
			if (!X509_gmtime_adj(X509_get_notBefore(x509ss),0)) goto end;
			if (!X509_gmtime_adj(X509_get_notAfter(x509ss), (long)60*60*24*days)) goto end;
			if (!X509_set_subject_name(x509ss, X509_REQ_get_subject_name(req))) goto end;
			tmppkey = X509_REQ_get_pubkey(req);
			if (!tmppkey || !X509_set_pubkey(x509ss,tmppkey)) goto end;
			EVP_PKEY_free(tmppkey);

			/* Set up V3 context struct */

			X509V3_set_ctx(&ext_ctx, x509ss, x509ss, NULL, NULL, 0);
			X509V3_set_conf_lhash(&ext_ctx, req_conf);

			/* Add extensions */
			if(extensions && !X509V3_EXT_add_conf(req_conf, 
				 	&ext_ctx, extensions, x509ss))
			    {
			    BIO_printf(bio_err,
				       "Error Loading extension section %s\n",
				       extensions);
			    goto end;
			    }

			if (!(i=X509_sign(x509ss,pkey,digest)))
				goto end;
			}
		else
			{
			X509V3_CTX ext_ctx;

			/* Set up V3 context struct */

			X509V3_set_ctx(&ext_ctx, NULL, NULL, req, NULL, 0);
			X509V3_set_conf_lhash(&ext_ctx, req_conf);

			/* Add extensions */
			if(req_exts && !X509V3_EXT_REQ_add_conf(req_conf, 
				 	&ext_ctx, req_exts, req))
			    {
			    BIO_printf(bio_err,
				       "Error Loading extension section %s\n",
				       req_exts);
			    goto end;
			    }
			if (!(i=X509_REQ_sign(req,pkey,digest)))
				goto end;
			}
		}

	if (verify && !x509)
		{
		int tmp=0;

		if (pkey == NULL)
			{
			pkey=X509_REQ_get_pubkey(req);
			tmp=1;
			if (pkey == NULL) goto end;
			}

		i=X509_REQ_verify(req,pkey);
		if (tmp) {
			EVP_PKEY_free(pkey);
			pkey=NULL;
		}

		if (i < 0)
			{
			goto end;
			}
		else if (i == 0)
			{
			BIO_printf(bio_err,"verify failure\n");
			}
		else /* if (i > 0) */
			BIO_printf(bio_err,"verify OK\n");
		}

	if (noout && !text && !modulus)
		{
		ex=0;
		goto end;
		}

	if (outfile == NULL)
		{
		BIO_set_fp(out,stdout,BIO_NOCLOSE);
#ifdef VMS
		{
		BIO *tmpbio = BIO_new(BIO_f_linebuffer());
		out = BIO_push(tmpbio, out);
		}
#endif
		}
	else
		{
		if ((keyout != NULL) && (strcmp(outfile,keyout) == 0))
			i=(int)BIO_append_filename(out,outfile);
		else
			i=(int)BIO_write_filename(out,outfile);
		if (!i)
			{
			perror(outfile);
			goto end;
			}
		}

	if (text)
		{
		if (x509)
			X509_print(out,x509ss);
		else	
			X509_REQ_print(out,req);
		}

	if (modulus)
		{
		EVP_PKEY *pubkey;

		if (x509)
			pubkey=X509_get_pubkey(x509ss);
		else
			pubkey=X509_REQ_get_pubkey(req);
		if (pubkey == NULL)
			{
			fprintf(stdout,"Modulus=unavailable\n");
			goto end; 
			}
		fprintf(stdout,"Modulus=");
#ifndef NO_RSA
		if (pubkey->type == EVP_PKEY_RSA)
			BN_print(out,pubkey->pkey.rsa->n);
		else
#endif
			fprintf(stdout,"Wrong Algorithm type");
		fprintf(stdout,"\n");
		}

	if (!noout && !x509)
		{