req.c

mediastreamer2是开源的网络传输媒体流的库

/* apps/req.c */
/* Copyright (C) 1995-1998 Eric Young ([e-mail])
 * All rights reserved.
 *
 * This package is an SSL implementation written
 * by Eric Young ([e-mail]).
 * 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 ([e-mail]).
 * 
 * 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 ([e-mail])"
 *    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 ([e-mail])"
 * 
 * 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.]
 */

/* Until the key-gen callbacks are modified to use newer prototypes, we allow
 * deprecated functions for openssl-internal code */
#ifdef OPENSSL_NO_DEPRECATED
#undef OPENSSL_NO_DEPRECATED
#endif

#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <string.h>
#ifdef OPENSSL_NO_STDIO
#define APPS_WIN16
#endif
#include "apps.h"
#include <openssl/bio.h>
#include <openssl/evp.h>
#include <openssl/conf.h>
#include <openssl/err.h>
#include <openssl/asn1.h>
#include <openssl/x509.h>
#include <openssl/x509v3.h>
#include <openssl/objects.h>
#include <openssl/pem.h>
#include <openssl/bn.h>
#ifndef OPENSSL_NO_RSA
#include <openssl/rsa.h>
#endif
#ifndef OPENSSL_NO_DSA
#include <openssl/dsa.h>
#endif

#define SECTION		"req"

#define BITS		"default_bits"
#define KEYFILE		"default_keyfile"
#define PROMPT		"prompt"
#define DISTINGUISHED_NAME	"distinguished_name"
#define ATTRIBUTES	"attributes"
#define V3_EXTENSIONS	"x509_extensions"
#define REQ_EXTENSIONS	"req_extensions"
#define STRING_MASK	"string_mask"
#define UTF8_IN		"utf8"

#define DEFAULT_KEY_LENGTH	512
#define MIN_KEY_LENGTH		384

#undef PROG
#define PROG	req_main

/* -inform arg	- input format - default PEM (DER or PEM)
 * -outform arg - output format - default PEM
 * -in arg	- input file - default stdin
 * -out arg	- output file - default stdout
 * -verify	- check request signature
 * -noout	- don't print stuff out.
 * -text	- print out human readable text.
 * -nodes	- no des encryption
 * -config file	- Load configuration file.
 * -key file	- make a request using key in file (or use it for verification).
 * -keyform arg	- key file format.
 * -rand file(s) - load the file(s) into the PRNG.
 * -newkey	- make a key and a request.
 * -modulus	- print RSA modulus.
 * -pubkey	- output Public Key.
 * -x509	- output a self signed X509 structure instead.
 * -asn1-kludge	- output new certificate request in a format that some CA's
 *		  require.  This format is wrong
 */

static int make_REQ(X509_REQ *req,EVP_PKEY *pkey,char *dn,int mutlirdn,
		int attribs,unsigned long chtype);
static int build_subject(X509_REQ *req, char *subj, unsigned long chtype,
		int multirdn);
static int prompt_info(X509_REQ *req,
		STACK_OF(CONF_VALUE) *dn_sk, char *dn_sect,
		STACK_OF(CONF_VALUE) *attr_sk, char *attr_sect, int attribs,
		unsigned long chtype);
static int auto_info(X509_REQ *req, STACK_OF(CONF_VALUE) *sk,
				STACK_OF(CONF_VALUE) *attr, int attribs,
				unsigned long chtype);
static int add_attribute_object(X509_REQ *req, char *text, const char *def,
				char *value, int nid, int n_min,
				int n_max, unsigned long chtype);
static int add_DN_object(X509_NAME *n, char *text, const char *def, char *value,
	int nid,int n_min,int n_max, unsigned long chtype, int mval);
#ifndef OPENSSL_NO_RSA
static int MS_CALLBACK req_cb(int p, int n, BN_GENCB *cb);
#endif
static int req_check_len(int len,int n_min,int n_max);
static int check_end(const char *str, const char *end);
#ifndef MONOLITH
static char *default_config_file=NULL;
#endif
static CONF *req_conf=NULL;
static int batch=0;

#define TYPE_RSA	1
#define TYPE_DSA	2
#define TYPE_DH		3
#define TYPE_EC		4

int MAIN(int, char **);

int MAIN(int argc, char **argv)
	{
	ENGINE *e = NULL;
#ifndef OPENSSL_NO_DSA
	DSA *dsa_params=NULL;
#endif
#ifndef OPENSSL_NO_ECDSA
	EC_KEY *ec_params = NULL;
#endif
	unsigned long nmflag = 0, reqflag = 0;
	int ex=1,x509=0,days=30;
	X509 *x509ss=NULL;
	X509_REQ *req=NULL;
	EVP_PKEY *pkey=NULL;
	int i=0,badops=0,newreq=0,verbose=0,pkey_type=TYPE_RSA;
	long newkey = -1;
	BIO *in=NULL,*out=NULL;
	int informat,outformat,verify=0,noout=0,text=0,keyform=FORMAT_PEM;
	int nodes=0,kludge=0,newhdr=0,subject=0,pubkey=0;
	char *infile,*outfile,*prog,*keyfile=NULL,*template=NULL,*keyout=NULL;
#ifndef OPENSSL_NO_ENGINE
	char *engine=NULL;
#endif
	char *extensions = NULL;
	char *req_exts = NULL;
	const EVP_CIPHER *cipher=NULL;
	ASN1_INTEGER *serial = NULL;
	int modulus=0;
	char *inrand=NULL;
	char *passargin = NULL, *passargout = NULL;
	char *passin = NULL, *passout = NULL;
	char *p;
	char *subj = NULL;
	int multirdn = 0;
	const EVP_MD *md_alg=NULL,*digest=EVP_sha1();
	unsigned long chtype = MBSTRING_ASC;
#ifndef MONOLITH
	char *to_free;
	long errline;
#endif

	req_conf = NULL;
#ifndef OPENSSL_NO_DES
	cipher=EVP_des_ede3_cbc();
#endif
	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));
			}
#ifndef OPENSSL_NO_ENGINE
		else if (strcmp(*argv,"-engine") == 0)
			{
			if (--argc < 1) goto bad;
			engine= *(++argv);
			}
#endif
		else if (strcmp(*argv,"-key") == 0)
			{
			if (--argc < 1) goto bad;
			keyfile= *(++argv);
			}
		else if (strcmp(*argv,"-pubkey") == 0)
			{
			pubkey=1;
			}
		else if (strcmp(*argv,"-new") == 0)
			{
			newreq=1;
			}
		else if (strcmp(*argv,"-config") == 0)
			{	
			if (--argc < 1) goto bad;
			template= *(++argv);
			}
		else if (strcmp(*argv,"-keyform") == 0)
			{
			if (--argc < 1) goto bad;
			keyform=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,"-keyout") == 0)
			{
			if (--argc < 1) goto bad;
			keyout= *(++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,"-rand") == 0)
			{
			if (--argc < 1) goto bad;
			inrand= *(++argv);
			}
		else if (strcmp(*argv,"-newkey") == 0)
			{
			int is_numeric;

			if (--argc < 1) goto bad;
			p= *(++argv);
			is_numeric = p[0] >= '0' && p[0] <= '9';
			if (strncmp("rsa:",p,4) == 0 || is_numeric)
				{
				pkey_type=TYPE_RSA;
				if(!is_numeric)
				    p+=4;
				newkey= atoi(p);
				}
			else
#ifndef OPENSSL_NO_DSA
				if (strncmp("dsa:",p,4) == 0)
				{
				X509 *xtmp=NULL;
				EVP_PKEY *dtmp;

				pkey_type=TYPE_DSA;
				p+=4;
				if ((in=BIO_new_file(p,"r")) == NULL)
					{
					perror(p);
					goto end;
					}
				if ((dsa_params=PEM_read_bio_DSAparams(in,NULL,NULL,NULL)) == NULL)
					{
					ERR_clear_error();
					(void)BIO_reset(in);
					if ((xtmp=PEM_read_bio_X509(in,NULL,NULL,NULL)) == NULL)
						{
						BIO_printf(bio_err,"unable to load DSA parameters from file\n");
						goto end;
						}

					if ((dtmp=X509_get_pubkey(xtmp)) == NULL) goto end;
					if (dtmp->type == EVP_PKEY_DSA)
						dsa_params=DSAparams_dup(dtmp->pkey.dsa);
					EVP_PKEY_free(dtmp);
					X509_free(xtmp);
					if (dsa_params == NULL)
						{
						BIO_printf(bio_err,"Certificate does not contain DSA parameters\n");
						goto end;
						}
					}
				BIO_free(in);
				in=NULL;
				newkey=BN_num_bits(dsa_params->p);
				}
			else 
#endif
#ifndef OPENSSL_NO_ECDSA
				if (strncmp("ec:",p,3) == 0)
				{
				X509 *xtmp=NULL;
				EVP_PKEY *dtmp;
				EC_GROUP *group;

				pkey_type=TYPE_EC;
				p+=3;
				if ((in=BIO_new_file(p,"r")) == NULL)
					{
					perror(p);
					goto end;
					}
				if ((ec_params = EC_KEY_new()) == NULL)
					goto end;
				group = PEM_read_bio_ECPKParameters(in, NULL, NULL, NULL);
				if (group == NULL)
					{
					EC_KEY_free(ec_params);
					ERR_clear_error();
					(void)BIO_reset(in);
					if ((xtmp=PEM_read_bio_X509(in,NULL,NULL,NULL)) == NULL)
						{	
						BIO_printf(bio_err,"unable to load EC parameters from file\n");
						goto end;
						}

					if ((dtmp=X509_get_pubkey(xtmp))==NULL)
						goto end;
					if (dtmp->type == EVP_PKEY_EC)
						ec_params = EC_KEY_dup(dtmp->pkey.ec);
					EVP_PKEY_free(dtmp);
					X509_free(xtmp);
					if (ec_params == NULL)
						{
						BIO_printf(bio_err,"Certificate does not contain EC parameters\n");
						goto end;
						}
					}
				else
					{
					if (EC_KEY_set_group(ec_params, group) == 0)
						goto end;
					EC_GROUP_free(group);
					}

				BIO_free(in);
				in=NULL;
				newkey = EC_GROUP_get_degree(EC_KEY_get0_group(ec_params));
				}
			else
#endif
#ifndef OPENSSL_NO_DH
				if (strncmp("dh:",p,4) == 0)
				{
				pkey_type=TYPE_DH;
				p+=3;
				}
			else
#endif
				{
				goto bad;
				}

			newreq=1;
			}
		else if (strcmp(*argv,"-batch") == 0)
			batch=1;
		else if (strcmp(*argv,"-newhdr") == 0)
			newhdr=1;
		else if (strcmp(*argv,"-modulus") == 0)
			modulus=1;
		else if (strcmp(*argv,"-verify") == 0)
			verify=1;
		else if (strcmp(*argv,"-nodes") == 0)
			nodes=1;
		else if (strcmp(*argv,"-noout") == 0)
			noout=1;
		else if (strcmp(*argv,"-verbose") == 0)
			verbose=1;
		else if (strcmp(*argv,"-utf8") == 0)
			chtype = MBSTRING_UTF8;
		else if (strcmp(*argv,"-nameopt") == 0)
			{
			if (--argc < 1) goto bad;
			if (!set_name_ex(&nmflag, *(++argv))) goto bad;
			}
		else if (strcmp(*argv,"-reqopt") == 0)
			{
			if (--argc < 1) goto bad;
			if (!set_cert_ex(&reqflag, *(++argv))) goto bad;
			}
		else if (strcmp(*argv,"-subject") == 0)
			subject=1;
		else if (strcmp(*argv,"-text") == 0)
			text=1;
		else if (strcmp(*argv,"-x509") == 0)
			x509=1;
		else if (strcmp(*argv,"-asn1-kludge") == 0)
			kludge=1;
		else if (strcmp(*argv,"-no-asn1-kludge") == 0)
			kludge=0;
		else if (strcmp(*argv,"-subj") == 0)
			{
			if (--argc < 1) goto bad;
			subj= *(++argv);
			}
		else if (strcmp(*argv,"-multivalue-rdn") == 0)
			multirdn=1;
		else if (strcmp(*argv,"-days") == 0)
			{
			if (--argc < 1) goto bad;
			days= atoi(*(++argv));
			if (days == 0) days=30;
			}
		else if (strcmp(*argv,"-set_serial") == 0)
			{
			if (--argc < 1) goto bad;
			serial = s2i_ASN1_INTEGER(NULL, *(++argv));
			if (!serial) goto bad;
			}
		else if ((md_alg=EVP_get_digestbyname(&((*argv)[1]))) != NULL)
			{
			/* ok */
			digest=md_alg;
			}
		else if (strcmp(*argv,"-extensions") == 0)
			{
			if (--argc < 1) goto bad;
			extensions = *(++argv);
			}
		else if (strcmp(*argv,"-reqexts") == 0)
			{
			if (--argc < 1) goto bad;
			req_exts = *(++argv);
			}
		else
			{
			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 - DER or PEM\n");
		BIO_printf(bio_err," -outform arg   output format - DER or PEM\n");
		BIO_printf(bio_err," -in arg        input file\n");
		BIO_printf(bio_err," -out arg       output file\n");
		BIO_printf(bio_err," -text          text form of request\n");
		BIO_printf(bio_err," -pubkey        output public key\n");
		BIO_printf(bio_err," -noout         do not output REQ\n");
		BIO_printf(bio_err," -verify        verify signature on REQ\n");
		BIO_printf(bio_err," -modulus       RSA modulus\n");
		BIO_printf(bio_err," -nodes         don't encrypt the output key\n");
#ifndef OPENSSL_NO_ENGINE
		BIO_printf(bio_err," -engine e      use engine e, possibly a hardware device\n");
#endif
		BIO_printf(bio_err," -subject       output the request's subject\n");
		BIO_printf(bio_err," -passin        private key password source\n");
		BIO_printf(bio_err," -key file      use the private key contained in file\n");
		BIO_printf(bio_err," -keyform arg   key file format\n");
		BIO_printf(bio_err," -keyout arg    file to send the key to\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," -newkey rsa:bits generate a new RSA key of 'bits' in size\n");
		BIO_printf(bio_err," -newkey dsa:file generate a new DSA key, parameters taken from CA in 'file'\n");
#ifndef OPENSSL_NO_ECDSA
		BIO_printf(bio_err," -newkey ec:file generate a new EC key, parameters taken from CA in 'file'\n");
#endif
		BIO_printf(bio_err," -[digest]      Digest to sign with (md5, sha1, md2, mdc2, md4)\n");
		BIO_printf(bio_err," -config file   request template file.\n");
		BIO_printf(bio_err," -subj arg      set or modify request subject\n");
		BIO_printf(bio_err," -multivalue-rdn enable support for multivalued RDNs\n");
		BIO_printf(bio_err," -new           new request.\n");
		BIO_printf(bio_err," -batch         do not ask anything during request generation\n");
		BIO_printf(bio_err," -x509          output a x509 structure instead of a cert. req.\n");
		BIO_printf(bio_err," -days          number of days a certificate generated by -x509 is valid for.\n");
		BIO_printf(bio_err," -set_serial    serial number to use for a certificate generated by -x509.\n");
		BIO_printf(bio_err," -newhdr        output \"NEW\" in the header lines\n");
		BIO_printf(bio_err," -asn1-kludge   Output the 'request' in a format that is wrong but some CA's\n");
		BIO_printf(bio_err,"                have been reported as requiring\n");
		BIO_printf(bio_err," -extensions .. specify certificate extension section (override value in config file)\n");
		BIO_printf(bio_err," -reqexts ..    specify request extension section (override value in config file)\n");
		BIO_printf(bio_err," -utf8          input characters are UTF8 (default ASCII)\n");
		BIO_printf(bio_err," -nameopt arg    - various certificate name options\n");
		BIO_printf(bio_err," -reqopt arg    - various request text options\n\n");
		goto end;
		}

	ERR_load_crypto_strings();
	if(!app_passwd(bio_err, passargin, passargout, &passin, &passout)) {
		BIO_printf(bio_err, "Error getting passwords\n");
		goto end;
	}

#ifndef MONOLITH /* else this has happened in openssl.c (global `config') */
	/* Lets load up our environment a little */
	p=getenv("OPENSSL_CONF");
	if (p == NULL)
		p=getenv("SSLEAY_CONF");
	if (p == NULL)
		p=to_free=make_config_name();
	default_config_file=p;
	config=NCONF_new(NULL);
	i=NCONF_load(config, p, &errline);
#endif