/* apps/req.c */
/* Copyright (C) 1995-1998 Eric Young ([email protected])
* All rights reserved.
*
* This package is an SSL implementation written
* by Eric Young ([email protected]).
* 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 ([email protected]).
*
* 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 ([email protected])"
* 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 ([email protected])"
*
* 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
if (template != NULL)
{
long errline = -1;
if( verbose )
BIO_printf(bio_err,"Using configuration from %s\n",template);
req_conf=NCONF_new(NULL);
i=NCONF_load(req_conf,template,&errline);
if (i == 0)
{
BIO_printf(bio_err,"error on line %ld of %s\n",errline,template);
goto end;
}
}
else
{
req_conf=config;
if (req_conf == NULL)
{
BIO_printf(bio_err,"Unable to load config info from %s\n", default_config_file);
if (newreq)
goto end;
}
else if( verbose )
BIO_printf(bio_err,"Using configuration from %s\n",
default_config_file);
}
if (req_conf != NULL)
{
if (!load_config(bio_err, req_conf))
goto end;
p=NCONF_get_string(req_conf,NULL,"oid_file");
if (p == NULL)
ERR_clear_error();
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=NCONF_get_string(req_conf,SECTION,"default_md");
if (p == NULL)
ERR_clear_error();
if (p != NULL)
{
if ((md_alg=EVP_get_digestbyname(p)) != NULL)
digest=md_alg;
}
}
if (!extensions)
{
extensions = NCONF_get_string(req_conf, SECTION, V3_EXTENSIONS);
if (!extensions)
ERR_clear_error();
}
if (extensions) {
/* Check syntax of file */
X509V3_CTX ctx;
X509V3_set_ctx_test(&ctx);
X509V3_set_nconf(&ctx, req_conf);
if(!X509V3_EXT_add_nconf(req_conf, &ctx, extensions, NULL)) {
BIO_printf(bio_err,
"Error Loading extension section %s\n", extensions);
goto end;
}
}
if(!passin)
{
passin = NCONF_get_string(req_conf, SECTION, "input_password");
if (!passin)
ERR_clear_error();
}
if(!passout)
{
passout = NCONF_get_string(req_conf, SECTION, "output_password");
if (!passout)
ERR_clear_error();
}
p = NCONF_get_string(req_conf, SECTION, STRING_MASK);
if (!p)
ERR_clear_error();
if(p && !ASN1_STRING_set_default_mask_asc(p)) {
BIO_printf(bio_err, "Invalid global string mask setting %s\n", p);
goto end;
}
if (chtype != MBSTRING_UTF8)
{
p = NCONF_get_string(req_conf, SECTION, UTF8_IN);
if (!p)
ERR_clear_error();
else if (!strcmp(p, "yes"))
chtype = MBSTRING_UTF8;
}
if(!req_exts)
{
req_exts = NCONF_get_string(req_conf, SECTION, REQ_EXTENSIONS);
if (!req_exts)
ERR_clear_error();
}
if(req_exts) {
/* Check syntax of file */
X509V3_CTX ctx;
X509V3_set_ctx_test(&ctx);
X509V3_set_nconf(&ctx, req_conf);
if(!X509V3_EXT_add_nconf(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;
#ifndef OPENSSL_NO_ENGINE
e = setup_engine(bio_err, engine, 0);
#endif
if (keyfile != NULL)
{
pkey = load_key(bio_err, keyfile, keyform, 0, passin, e,
"Private Key");
if (!pkey)
{
/* load_key() has already printed an appropriate
message */
goto end;
}
if (EVP_PKEY_type(pkey->type) == EVP_PKEY_DSA ||
EVP_PKEY_type(pkey->type) == EVP_PKEY_EC)
{
char *randfile = NCONF_get_string(req_conf,SECTION,"RANDFILE");
if (randfile == NULL)
ERR_clear_error();
app_RAND_load_file(randfile, bio_err, 0);
}
}
if (newreq && (pkey == NULL))
{
#ifndef OPENSSL_NO_RSA
BN_GENCB cb;
#endif
char *randfile = NCONF_get_string(req_conf,SECTION,"RANDFILE");
if (randfile == NULL)
ERR_clear_error();
app_RAND_load_file(randfile, bio_err, 0);
if (inrand)
app_RAND_load_files(inrand);
if (newkey <= 0)
{
if (!NCONF_get_number(req_conf,SECTION,BITS, &newkey))
newkey=DEFAULT_KEY_LENGTH;
}
if (newkey < MIN_KEY_LENGTH && (pkey_type == TYPE_RSA || pkey_type == TYPE_DSA))
{
BIO_printf(bio_err,"private key length is too short,\n");
BIO_printf(bio_err,"it needs to be at least %d bits, not %ld\n",MIN_KEY_LENGTH,newkey);
goto end;
}
BIO_printf(bio_err,"Generating a %ld bit %s private key\n",
newkey,(pkey_type == TYPE_RSA)?"RSA":
(pkey_type == TYPE_DSA)?"DSA":"EC");
if ((pkey=EVP_PKEY_new()) == NULL) goto end;
#ifndef OPENSSL_NO_RSA
BN_GENCB_set(&cb, req_cb, bio_err);
if (pkey_type == TYPE_RSA)
{
RSA *rsa = RSA_new();
BIGNUM *bn = BN_new();
if(!bn || !rsa || !BN_set_word(bn, 0x10001) ||
!RSA_generate_key_ex(rsa, newkey, bn, &cb) ||
!EVP_PKEY_assign_RSA(pkey, rsa))
{
if(bn) BN_free(bn);
if(rsa) RSA_free(rsa);
goto end;
}
BN_free(bn);
}
else
#endif
#ifndef OPENSSL_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
#ifndef OPENSSL_NO_ECDSA
if (pkey_type == TYPE_EC)
{
if (!EC_KEY_generate_key(ec_params)) goto end;
if (!EVP_PKEY_assign_EC_KEY(pkey, ec_params))
goto end;
ec_params = NULL;
}
#endif
app_RAND_write_file(randfile, bio_err);
if (pkey == NULL) goto end;
if (keyout == NULL)
{
keyout=NCONF_get_string(req_conf,SECTION,KEYFILE);
if (keyout == NULL)
ERR_clear_error();
}
if (keyout == NULL)
{
BIO_printf(bio_err,"writing new private key to stdout\n");
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
{
BIO_printf(bio_err,"writing new private key to '%s'\n",keyout);
if (BIO_write_filename(out,keyout) <= 0)
{
perror(keyout);
goto end;
}
}
p=NCONF_get_string(req_conf,SECTION,"encrypt_rsa_key");
if (p == NULL)
{
ERR_clear_error();
p=NCONF_get_string(req_conf,SECTION,"encrypt_key");
if (p == NULL)
ERR_clear_error();
}
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 OPENSSL_NO_DSA
if (pkey->type == EVP_PKEY_DSA)
digest=EVP_dss1();
#endif
#ifndef OPENSSL_NO_ECDSA
if (pkey->type == EVP_PKEY_EC)
digest=EVP_ecdsa();
#endif
if (req == NULL)
{
req=X509_REQ_new();
if (req == NULL)
{
goto end;
}
i=make_REQ(req,pkey,subj,multirdn,!x509, chtype);
subj=NULL; /* done processing '-subj' option */
if ((kludge > 0) && !sk_X509_ATTRIBUTE_num(req->req_info->attributes))
{
sk_X509_ATTRIBUTE_free(req->req_info->attributes);
req->req_info->attributes = NULL;
}
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(extensions && !X509_set_version(x509ss, 2)) goto end;
if (serial)
{
if (!X509_set_serialNumber(x509ss, serial)) goto end;
}
else
{
if (!rand_serial(NULL,
X509_get_serialNumber(x509ss)))
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_nconf(&ext_ctx, req_conf);
/* Add extensions */
if(extensions && !X509V3_EXT_add_nconf(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_nconf(&ext_ctx, req_conf);
/* Add extensions */
if(req_exts && !X509V3_EXT_REQ_add_nconf(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 (subj && x509)
{
BIO_printf(bio_err, "Cannot modifiy certificate subject\n");
goto end;
}
if (subj && !x509)
{
if (verbose)
{
BIO_printf(bio_err, "Modifying Request's Subject\n");
print_name(bio_err, "old subject=", X509_REQ_get_subject_name(req), nmflag);
}
if (build_subject(req, subj, chtype, multirdn) == 0)
{
BIO_printf(bio_err, "ERROR: cannot modify subject\n");
ex=1;
goto end;
}
req->req_info->enc.modified = 1;
if (verbose)
{
print_name(bio_err, "new subject=", X509_REQ_get_subject_name(req), nmflag);
}
}
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");
ERR_print_errors(bio_err);
}
else /* if (i > 0) */
BIO_printf(bio_err,"verify OK\n");
}
if (noout && !text && !modulus && !subject && !pubkey)
{
ex=0;
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 ((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 (pubkey)
{
EVP_PKEY *tpubkey;
tpubkey=X509_REQ_get_pubkey(req);
if (tpubkey == NULL)
{
BIO_printf(bio_err,"Error getting public key\n");
ERR_print_errors(bio_err);
goto end;
}
PEM_write_bio_PUBKEY(out, tpubkey);
EVP_PKEY_free(tpubkey);
}
if (text)
{
if (x509)
X509_print_ex(out, x509ss, nmflag, reqflag);
else
X509_REQ_print_ex(out, req, nmflag, reqflag);
}
if(subject)
{
if(x509)
print_name(out, "subject=", X509_get_subject_name(x509ss), nmflag);
else
print_name(out, "subject=", X509_REQ_get_subject_name(req), nmflag);
}
if (modulus)
{
EVP_PKEY *tpubkey;
if (x509)
tpubkey=X509_get_pubkey(x509ss);
else
tpubkey=X509_REQ_get_pubkey(req);
if (tpubkey == NULL)
{
fprintf(stdout,"Modulus=unavailable\n");
goto end;
}
fprintf(stdout,"Modulus=");
#ifndef OPENSSL_NO_RSA
if (tpubkey->type == EVP_PKEY_RSA)
BN_print(out,tpubkey->pkey.rsa->n);
else
#endif
fprintf(stdout,"Wrong Algorithm type");
EVP_PKEY_free(tpubkey);
fprintf(stdout,"\n");
}
if (!noout && !x509)
{
if (outformat == FORMAT_ASN1)
i=i2d_X509_REQ_bio(out,req);
else if (outformat == FORMAT_PEM) {
if(newhdr) i=PEM_write_bio_X509_REQ_NEW(out,req);
else i=PEM_write_bio_X509_REQ(out,req);
} else {
BIO_printf(bio_err,"bad output format specified for outfile\n");
goto end;
}
if (!i)
{
BIO_printf(bio_err,"unable to write X509 request\n");
goto end;
}
}
if (!noout && x509 && (x509ss != NULL))
{
if (outformat == FORMAT_ASN1)
i=i2d_X509_bio(out,x509ss);
else if (outformat == FORMAT_PEM)
i=PEM_write_bio_X509(out,x509ss);
else {
BIO_printf(bio_err,"bad output format specified for outfile\n");
goto end;
}
if (!i)
{
BIO_printf(bio_err,"unable to write X509 certificate\n");
goto end;
}
}
ex=0;
end:
#ifndef MONOLITH
if(to_free)
OPENSSL_free(to_free);
#endif
if (ex)
{
ERR_print_errors(bio_err);
}
if ((req_conf != NULL) && (req_conf != config)) NCONF_free(req_conf);
BIO_free(in);
BIO_free_all(out);
EVP_PKEY_free(pkey);
X509_REQ_free(req);
X509_free(x509ss);
ASN1_INTEGER_free(serial);
if(passargin && passin) OPENSSL_free(passin);
if(passargout && passout) OPENSSL_free(passout);
OBJ_cleanup();
#ifndef OPENSSL_NO_DSA
if (dsa_params != NULL) DSA_free(dsa_params);
#endif
#ifndef OPENSSL_NO_ECDSA
if (ec_params != NULL) EC_KEY_free(ec_params);
#endif
apps_shutdown();
OPENSSL_EXIT(ex);
}
static int make_REQ(X509_REQ *req, EVP_PKEY *pkey, char *subj, int multirdn,
int attribs, unsigned long chtype)
{
int ret=0,i;
char no_prompt = 0;
STACK_OF(CONF_VALUE) *dn_sk, *attr_sk = NULL;
char *tmp, *dn_sect,*attr_sect;
tmp=NCONF_get_string(req_conf,SECTION,PROMPT);
if (tmp == NULL)
ERR_clear_error();
if((tmp != NULL) && !strcmp(tmp, "no")) no_prompt = 1;
dn_sect=NCONF_get_string(req_conf,SECTION,DISTINGUISHED_NAME);
if (dn_sect == NULL)
{
BIO_printf(bio_err,"unable to find '%s' in config\n",
DISTINGUISHED_NAME);
goto err;
}
dn_sk=NCONF_get_section(req_conf,dn_sect);
if (dn_sk == NULL)
{
BIO_printf(bio_err,"unable to get '%s' section\n",dn_sect);
goto err;
}
attr_sect=NCONF_get_string(req_conf,SECTION,ATTRIBUTES);
if (attr_sect == NULL)
{
ERR_clear_error();
attr_sk=NULL;
}
else
{
attr_sk=NCONF_get_section(req_conf,attr_sect);
if (attr_sk == NULL)
{
BIO_printf(bio_err,"unable to get '%s' section\n",attr_sect);
goto err;
}
}
/* setup version number */
if (!X509_REQ_set_version(req,0L)) goto err; /* version 1 */
if (no_prompt)
i = auto_info(req, dn_sk, attr_sk, attribs, chtype);
else
{
if (subj)
i = build_subject(req, subj, chtype, multirdn);
else
i = prompt_info(req, dn_sk, dn_sect, attr_sk, attr_sect, attribs, chtype);
}
if(!i) goto err;
if (!X509_REQ_set_pubkey(req,pkey)) goto err;
ret=1;
err:
return(ret);
}
/*
* subject is expected to be in the format /type0=value0/type1=value1/type2=...
* where characters may be escaped by \
*/
static int build_subject(X509_REQ *req, char *subject, unsigned long chtype, int multirdn)
{
X509_NAME *n;
if (!(n = parse_name(subject, chtype, multirdn)))
return 0;
if (!X509_REQ_set_subject_name(req, n))
{
X509_NAME_free(n);
return 0;
}
X509_NAME_free(n);
return 1;
}
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)
{
int i;
char *p,*q;
char buf[100];
int nid, mval;
long n_min,n_max;
char *type, *value;
const char *def;
CONF_VALUE *v;
X509_NAME *subj;
subj = X509_REQ_get_subject_name(req);
if(!batch)
{
BIO_printf(bio_err,"You are about to be asked to enter information that will be incorporated\n");
BIO_printf(bio_err,"into your certificate request.\n");
BIO_printf(bio_err,"What you are about to enter is what is called a Distinguished Name or a DN.\n");
BIO_printf(bio_err,"There are quite a few fields but you can leave some blank\n");
BIO_printf(bio_err,"For some fields there will be a default value,\n");
BIO_printf(bio_err,"If you enter '.', the field will be left blank.\n");
BIO_printf(bio_err,"-----\n");
}
if (sk_CONF_VALUE_num(dn_sk))
{
i= -1;
start: for (;;)
{
i++;
if (sk_CONF_VALUE_num(dn_sk) <= i) break;
v=sk_CONF_VALUE_value(dn_sk,i);
p=q=NULL;
type=v->name;
if(!check_end(type,"_min") || !check_end(type,"_max") ||
!check_end(type,"_default") ||
!check_end(type,"_value")) continue;
/* Skip past any leading X. X: X, etc to allow for
* multiple instances
*/
for(p = v->name; *p ; p++)
if ((*p == ':') || (*p == ',') ||
(*p == '.')) {
p++;
if(*p) type = p;
break;
}
if (*type == '+')
{
mval = -1;
type++;
}
else
mval = 0;
/* If OBJ not recognised ignore it */
if ((nid=OBJ_txt2nid(type)) == NID_undef) goto start;
if (BIO_snprintf(buf,sizeof buf,"%s_default",v->name)
>= (int)sizeof(buf))
{
BIO_printf(bio_err,"Name '%s' too long\n",v->name);
return 0;
}
if ((def=NCONF_get_string(req_conf,dn_sect,buf)) == NULL)
{
ERR_clear_error();
def="";
}
BIO_snprintf(buf,sizeof buf,"%s_value",v->name);
if ((value=NCONF_get_string(req_conf,dn_sect,buf)) == NULL)
{
ERR_clear_error();
value=NULL;
}
BIO_snprintf(buf,sizeof buf,"%s_min",v->name);
if (!NCONF_get_number(req_conf,dn_sect,buf, &n_min))
{
ERR_clear_error();
n_min = -1;
}
BIO_snprintf(buf,sizeof buf,"%s_max",v->name);
if (!NCONF_get_number(req_conf,dn_sect,buf, &n_max))
{
ERR_clear_error();
n_max = -1;
}
if (!add_DN_object(subj,v->value,def,value,nid,
n_min,n_max, chtype, mval))
return 0;
}
if (X509_NAME_entry_count(subj) == 0)
{
BIO_printf(bio_err,"error, no objects specified in config file\n");
return 0;
}
if (attribs)
{
if ((attr_sk != NULL) && (sk_CONF_VALUE_num(attr_sk) > 0) && (!batch))
{
BIO_printf(bio_err,"\nPlease enter the following 'extra' attributes\n");
BIO_printf(bio_err,"to be sent with your certificate request\n");
}
i= -1;
start2: for (;;)
{
i++;
if ((attr_sk == NULL) ||
(sk_CONF_VALUE_num(attr_sk) <= i))
break;
v=sk_CONF_VALUE_value(attr_sk,i);
type=v->name;
if ((nid=OBJ_txt2nid(type)) == NID_undef)
goto start2;
if (BIO_snprintf(buf,sizeof buf,"%s_default",type)
>= (int)sizeof(buf))
{
BIO_printf(bio_err,"Name '%s' too long\n",v->name);
return 0;
}
if ((def=NCONF_get_string(req_conf,attr_sect,buf))
== NULL)
{
ERR_clear_error();
def="";
}
BIO_snprintf(buf,sizeof buf,"%s_value",type);
if ((value=NCONF_get_string(req_conf,attr_sect,buf))
== NULL)
{
ERR_clear_error();
value=NULL;
}
BIO_snprintf(buf,sizeof buf,"%s_min",type);
if (!NCONF_get_number(req_conf,attr_sect,buf, &n_min))
n_min = -1;
BIO_snprintf(buf,sizeof buf,"%s_max",type);
if (!NCONF_get_number(req_conf,attr_sect,buf, &n_max))
n_max = -1;
if (!add_attribute_object(req,
v->value,def,value,nid,n_min,n_max, chtype))
return 0;
}
}
}
else
{
BIO_printf(bio_err,"No template, please set one up.\n");
return 0;
}
return 1;
}
static int auto_info(X509_REQ *req, STACK_OF(CONF_VALUE) *dn_sk,
STACK_OF(CONF_VALUE) *attr_sk, int attribs, unsigned long chtype)
{
int i;
char *p,*q;
char *type;
CONF_VALUE *v;
X509_NAME *subj;
subj = X509_REQ_get_subject_name(req);
for (i = 0; i < sk_CONF_VALUE_num(dn_sk); i++)
{
int mval;
v=sk_CONF_VALUE_value(dn_sk,i);
p=q=NULL;
type=v->name;
/* Skip past any leading X. X: X, etc to allow for
* multiple instances
*/
for(p = v->name; *p ; p++)
#ifndef CHARSET_EBCDIC
if ((*p == ':') || (*p == ',') || (*p == '.')) {
#else
if ((*p == os_toascii[':']) || (*p == os_toascii[',']) || (*p == os_toascii['.'])) {
#endif
p++;
if(*p) type = p;
break;
}
#ifndef CHARSET_EBCDIC
if (*p == '+')
#else
if (*p == os_toascii['+'])
#endif
{
p++;
mval = -1;
}
else
mval = 0;
if (!X509_NAME_add_entry_by_txt(subj,type, chtype,
(unsigned char *) v->value,-1,-1,mval)) return 0;
}
if (!X509_NAME_entry_count(subj))
{
BIO_printf(bio_err,"error, no objects specified in config file\n");
return 0;
}
if (attribs)
{
for (i = 0; i < sk_CONF_VALUE_num(attr_sk); i++)
{
v=sk_CONF_VALUE_value(attr_sk,i);
if(!X509_REQ_add1_attr_by_txt(req, v->name, chtype,
(unsigned char *)v->value, -1)) return 0;
}
}
return 1;
}
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)
{
int i,ret=0;
MS_STATIC char buf[1024];
start:
if (!batch) BIO_printf(bio_err,"%s [%s]:",text,def);
(void)BIO_flush(bio_err);
if(value != NULL)
{
BUF_strlcpy(buf,value,sizeof buf);
BUF_strlcat(buf,"\n",sizeof buf);
BIO_printf(bio_err,"%s\n",value);
}
else
{
buf[0]='\0';
if (!batch)
{
fgets(buf,sizeof buf,stdin);
}
else
{
buf[0] = '\n';
buf[1] = '\0';
}
}
if (buf[0] == '\0') return(0);
else if (buf[0] == '\n')
{
if ((def == NULL) || (def[0] == '\0'))
return(1);
BUF_strlcpy(buf,def,sizeof buf);
BUF_strlcat(buf,"\n",sizeof buf);
}
else if ((buf[0] == '.') && (buf[1] == '\n')) return(1);
i=strlen(buf);
if (buf[i-1] != '\n')
{
BIO_printf(bio_err,"weird input :-(\n");
return(0);
}
buf[--i]='\0';
#ifdef CHARSET_EBCDIC
ebcdic2ascii(buf, buf, i);
#endif
if(!req_check_len(i, n_min, n_max)) goto start;
if (!X509_NAME_add_entry_by_NID(n,nid, chtype,
(unsigned char *) buf, -1,-1,mval)) goto err;
ret=1;
err:
return(ret);
}
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)
{
int i;
static char buf[1024];
start:
if (!batch) BIO_printf(bio_err,"%s [%s]:",text,def);
(void)BIO_flush(bio_err);
if (value != NULL)
{
BUF_strlcpy(buf,value,sizeof buf);
BUF_strlcat(buf,"\n",sizeof buf);
BIO_printf(bio_err,"%s\n",value);
}
else
{
buf[0]='\0';
if (!batch)
{
fgets(buf,sizeof buf,stdin);
}
else
{
buf[0] = '\n';
buf[1] = '\0';
}
}
if (buf[0] == '\0') return(0);
else if (buf[0] == '\n')
{
if ((def == NULL) || (def[0] == '\0'))
return(1);
BUF_strlcpy(buf,def,sizeof buf);
BUF_strlcat(buf,"\n",sizeof buf);
}
else if ((buf[0] == '.') && (buf[1] == '\n')) return(1);
i=strlen(buf);
if (buf[i-1] != '\n')
{
BIO_printf(bio_err,"weird input :-(\n");
return(0);
}
buf[--i]='\0';
#ifdef CHARSET_EBCDIC
ebcdic2ascii(buf, buf, i);
#endif
if(!req_check_len(i, n_min, n_max)) goto start;
if(!X509_REQ_add1_attr_by_NID(req, nid, chtype,
(unsigned char *)buf, -1)) {
BIO_printf(bio_err, "Error adding attribute\n");
ERR_print_errors(bio_err);
goto err;
}
return(1);
err:
return(0);
}
#ifndef OPENSSL_NO_RSA
static int MS_CALLBACK req_cb(int p, int n, BN_GENCB *cb)
{
char c='*';
if (p == 0) c='.';
if (p == 1) c='+';
if (p == 2) c='*';
if (p == 3) c='\n';
BIO_write(cb->arg,&c,1);
(void)BIO_flush(cb->arg);
#ifdef LINT
p=n;
#endif
return 1;
}
#endif
static int req_check_len(int len, int n_min, int n_max)
{
if ((n_min > 0) && (len < n_min))
{
BIO_printf(bio_err,"string is too short, it needs to be at least %d bytes long\n",n_min);
return(0);
}
if ((n_max >= 0) && (len > n_max))
{
BIO_printf(bio_err,"string is too long, it needs to be less than %d bytes long\n",n_max);
return(0);
}
return(1);
}
/* Check if the end of a string matches 'end' */
static int check_end(const char *str, const char *end)
{
int elen, slen;
const char *tmp;
elen = strlen(end);
slen = strlen(str);
if(elen > slen) return 1;
tmp = str + slen - elen;
return strcmp(tmp, end);
}
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