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openssl/apps/req.c
Ben Laurie d500de1672 Another stack.
1999-05-01 18:08:44 +00:00

1191 lines
29 KiB
C
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/* apps/req.c */
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
* All rights reserved.
*
* This package is an SSL implementation written
* by Eric Young (eay@cryptsoft.com).
* 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 (tjh@cryptsoft.com).
*
* 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 (eay@cryptsoft.com)"
* 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 (tjh@cryptsoft.com)"
*
* 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.]
*/
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <string.h>
#ifdef NO_STDIO
#define APPS_WIN16
#endif
#include "apps.h"
#include <openssl/bio.h>
#include <openssl/evp.h>
#include <openssl/rand.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>
#define SECTION "req"
#define BITS "default_bits"
#define KEYFILE "default_keyfile"
#define DISTINGUISHED_NAME "distinguished_name"
#define ATTRIBUTES "attributes"
#define V3_EXTENSIONS "x509_extensions"
#define DEFAULT_KEY_LENGTH 512
#define MIN_KEY_LENGTH 384
#undef PROG
#define PROG req_main
/* -inform arg - input format - default PEM (one of DER, TXT 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 - key file format.
* -newkey - make a key and a request.
* -modulus - print RSA modulus.
* -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,int attribs);
static int add_attribute_object(STACK_OF(X509_ATTRIBUTE) *n, char *text,
char *def, char *value, int nid, int min,
int max);
static int add_DN_object(X509_NAME *n, char *text, char *def, char *value,
int nid,int min,int max);
static void MS_CALLBACK req_cb(int p,int n,char *arg);
static int req_fix_data(int nid,int *type,int len,int min,int max);
static int check_end(char *str, char *end);
static int add_oid_section(LHASH *conf);
#ifndef MONOLITH
static char *default_config_file=NULL;
static LHASH *config=NULL;
#endif
static LHASH *req_conf=NULL;
#define TYPE_RSA 1
#define TYPE_DSA 2
#define TYPE_DH 3
int MAIN(int argc, char **argv)
{
#ifndef NO_DSA
DSA *dsa_params=NULL;
#endif
int ex=1,x509=0,days=30;
X509 *x509ss=NULL;
X509_REQ *req=NULL;
EVP_PKEY *pkey=NULL;
int i,badops=0,newreq=0,newkey= -1,pkey_type=0;
BIO *in=NULL,*out=NULL;
int informat,outformat,verify=0,noout=0,text=0,keyform=FORMAT_PEM;
int nodes=0,kludge=0;
char *infile,*outfile,*prog,*keyfile=NULL,*template=NULL,*keyout=NULL;
char *extensions = NULL;
EVP_CIPHER *cipher=NULL;
int modulus=0;
char *p;
const EVP_MD *md_alg=NULL,*digest=EVP_md5();
#ifndef MONOLITH
MS_STATIC char config_name[256];
#endif
#ifndef 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));
}
else if (strcmp(*argv,"-key") == 0)
{
if (--argc < 1) goto bad;
keyfile= *(++argv);
}
else if (strcmp(*argv,"-new") == 0)
{
pkey_type=TYPE_RSA;
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,"-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 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)
{
ERR_clear_error();
BIO_reset(in);
if ((xtmp=PEM_read_bio_X509(in,NULL,NULL)) == NULL)
{
BIO_printf(bio_err,"unable to load DSA parameters from file\n");
goto end;
}
dtmp=X509_get_pubkey(xtmp);
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);
newkey=BN_num_bits(dsa_params->p);
in=NULL;
}
else
#endif
#ifndef NO_DH
if (strncmp("dh:",p,4) == 0)
{
pkey_type=TYPE_DH;
p+=3;
}
else
#endif
pkey_type=TYPE_RSA;
newreq=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,"-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,"-days") == 0)
{
if (--argc < 1) goto bad;
days= atoi(*(++argv));
if (days == 0) days=30;
}
else if ((md_alg=EVP_get_digestbyname(&((*argv)[1]))) != NULL)
{
/* ok */
digest=md_alg;
}
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 - one of DER TXT PEM\n");
BIO_printf(bio_err," -outform arg output format - one of DER TXT 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," -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");
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," -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");
BIO_printf(bio_err," -[digest] Digest to sign with (md5, sha1, md2, mdc2)\n");
BIO_printf(bio_err," -config file request template file.\n");
BIO_printf(bio_err," -new new request.\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 x509 generated by -x509 is valid for.\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," [ It is now always turned on but can be turned off with -no-asn1-kludge ]\n");
goto end;
}
ERR_load_crypto_strings();
X509V3_add_standard_extensions();
#ifndef MONOLITH
/* Lets load up our environment a little */
p=getenv("OPENSSL_CONF");
if (p == NULL)
p=getenv("SSLEAY_CONF");
if (p == NULL)
{
strcpy(config_name,X509_get_default_cert_area());
strcat(config_name,"/lib/");
strcat(config_name,OPENSSL_CONF);
p=config_name;
}
default_config_file=p;
config=CONF_load(config,p,NULL);
#endif
if (template != NULL)
{
long errline;
BIO_printf(bio_err,"Using configuration from %s\n",template);
req_conf=CONF_load(NULL,template,&errline);
if (req_conf == NULL)
{
BIO_printf(bio_err,"error on line %ld of %s\n",errline,template);
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(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;
}
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;
}
}
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)
rsa=d2i_RSAPrivateKey_bio(in,NULL);
else */
if (keyform == FORMAT_PEM)
pkey=PEM_read_bio_PrivateKey(in,NULL,NULL);
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 (newreq && (pkey == NULL))
{
char *randfile;
char buffer[200];
if ((randfile=CONF_get_string(req_conf,SECTION,"RANDFILE")) == NULL)
randfile=RAND_file_name(buffer,200);
#ifdef WINDOWS
BIO_printf(bio_err,"Loading 'screen' into random state -");
BIO_flush(bio_err);
RAND_screen();
BIO_printf(bio_err," done\n");
#endif
if ((randfile == NULL) || !RAND_load_file(randfile,1024L*1024L))
{
BIO_printf(bio_err,"unable to load 'random state'\n");
BIO_printf(bio_err,"What this means is that the random number generator has not been seeded\n");
BIO_printf(bio_err,"with much random data.\n");
BIO_printf(bio_err,"Consider setting the RANDFILE environment variable to point at a file that\n");
BIO_printf(bio_err,"'random' data can be kept in.\n");
}
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,(char *)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
if ((randfile == NULL) || (RAND_write_file(randfile) == 0))
BIO_printf(bio_err,"unable to write 'random state'\n");
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);
}
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))
{
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);
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)
{
#ifndef NO_DSA
if (pkey->type == EVP_PKEY_DSA)
digest=EVP_dss1();
#endif
if (pkey == NULL)
{
BIO_printf(bio_err,"you need to specify a private key\n");
goto end;
}
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;
ASN1_INTEGER_set(X509_get_serialNumber(x509ss),0L);
X509_set_issuer_name(x509ss,
X509_REQ_get_subject_name(req));
X509_gmtime_adj(X509_get_notBefore(x509ss),0);
X509_gmtime_adj(X509_get_notAfter(x509ss),
(long)60*60*24*days);
X509_set_subject_name(x509ss,
X509_REQ_get_subject_name(req));
tmppkey = X509_REQ_get_pubkey(req);
X509_set_pubkey(x509ss,tmppkey);
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
{
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);
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)
{
if (outformat == FORMAT_ASN1)
i=i2d_X509_REQ_bio(out,req);
else if (outformat == FORMAT_PEM)
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:
if (ex)
{
ERR_print_errors(bio_err);
}
if ((req_conf != NULL) && (req_conf != config)) CONF_free(req_conf);
BIO_free(in);
BIO_free(out);
EVP_PKEY_free(pkey);
X509_REQ_free(req);
X509_free(x509ss);
X509V3_EXT_cleanup();
OBJ_cleanup();
#ifndef NO_DSA
if (dsa_params != NULL) DSA_free(dsa_params);
#endif
EXIT(ex);
}
static int make_REQ(X509_REQ *req, EVP_PKEY *pkey, int attribs)
{
int ret=0,i;
char *p,*q;
X509_REQ_INFO *ri;
char buf[100];
int nid,min,max;
char *type,*def,*tmp,*value,*tmp_attr;
STACK *sk,*attr=NULL;
CONF_VALUE *v;
tmp=CONF_get_string(req_conf,SECTION,DISTINGUISHED_NAME);
if (tmp == NULL)
{
BIO_printf(bio_err,"unable to find '%s' in config\n",
DISTINGUISHED_NAME);
goto err;
}
sk=CONF_get_section(req_conf,tmp);
if (sk == NULL)
{
BIO_printf(bio_err,"unable to get '%s' section\n",tmp);
goto err;
}
tmp_attr=CONF_get_string(req_conf,SECTION,ATTRIBUTES);
if (tmp_attr == NULL)
attr=NULL;
else
{
attr=CONF_get_section(req_conf,tmp_attr);
if (attr == NULL)
{
BIO_printf(bio_err,"unable to get '%s' section\n",tmp_attr);
goto err;
}
}
ri=req->req_info;
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");
/* setup version number */
if (!ASN1_INTEGER_set(ri->version,0L)) goto err; /* version 1 */
if (sk_num(sk))
{
i= -1;
start: for (;;)
{
i++;
if ((int)sk_num(sk) <= i) break;
v=(CONF_VALUE *)sk_value(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 OBJ not recognised ignore it */
if ((nid=OBJ_txt2nid(type)) == NID_undef) goto start;
sprintf(buf,"%s_default",v->name);
if ((def=CONF_get_string(req_conf,tmp,buf)) == NULL)
def="";
sprintf(buf,"%s_value",v->name);
if ((value=CONF_get_string(req_conf,tmp,buf)) == NULL)
value=NULL;
sprintf(buf,"%s_min",v->name);
min=(int)CONF_get_number(req_conf,tmp,buf);
sprintf(buf,"%s_max",v->name);
max=(int)CONF_get_number(req_conf,tmp,buf);
if (!add_DN_object(ri->subject,v->value,def,value,nid,
min,max))
goto err;
}
if (sk_X509_NAME_ENTRY_num(ri->subject->entries) == 0)
{
BIO_printf(bio_err,"error, no objects specified in config file\n");
goto err;
}
if (attribs)
{
if ((attr != NULL) && (sk_num(attr) > 0))
{
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 == NULL) || ((int)sk_num(attr) <= i))
break;
v=(CONF_VALUE *)sk_value(attr,i);
type=v->name;
if ((nid=OBJ_txt2nid(type)) == NID_undef)
goto start2;
sprintf(buf,"%s_default",type);
if ((def=CONF_get_string(req_conf,tmp_attr,buf))
== NULL)
def="";
sprintf(buf,"%s_value",type);
if ((value=CONF_get_string(req_conf,tmp_attr,buf))
== NULL)
value=NULL;
sprintf(buf,"%s_min",type);
min=(int)CONF_get_number(req_conf,tmp_attr,buf);
sprintf(buf,"%s_max",type);
max=(int)CONF_get_number(req_conf,tmp_attr,buf);
if (!add_attribute_object(ri->attributes,
v->value,def,value,nid,min,max))
goto err;
}
}
}
else
{
BIO_printf(bio_err,"No template, please set one up.\n");
goto err;
}
X509_REQ_set_pubkey(req,pkey);
ret=1;
err:
return(ret);
}
static int add_DN_object(X509_NAME *n, char *text, char *def, char *value,
int nid, int min, int max)
{
int i,j,ret=0;
X509_NAME_ENTRY *ne=NULL;
MS_STATIC char buf[1024];
BIO_printf(bio_err,"%s [%s]:",text,def);
BIO_flush(bio_err);
if (value != NULL)
{
strcpy(buf,value);
strcat(buf,"\n");
BIO_printf(bio_err,"%s\n",value);
}
else
{
buf[0]='\0';
fgets(buf,1024,stdin);
}
if (buf[0] == '\0') return(0);
else if (buf[0] == '\n')
{
if ((def == NULL) || (def[0] == '\0'))
return(1);
strcpy(buf,def);
strcat(buf,"\n");
}
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';
j=ASN1_PRINTABLE_type((unsigned char *)buf,-1);
if (req_fix_data(nid,&j,i,min,max) == 0)
goto err;
if ((ne=X509_NAME_ENTRY_create_by_NID(NULL,nid,j,(unsigned char *)buf,
strlen(buf)))
== NULL) goto err;
if (!X509_NAME_add_entry(n,ne,X509_NAME_entry_count(n),0))
goto err;
ret=1;
err:
if (ne != NULL) X509_NAME_ENTRY_free(ne);
return(ret);
}
static int add_attribute_object(STACK_OF(X509_ATTRIBUTE) *n, char *text,
char *def, char *value, int nid, int min,
int max)
{
int i,z;
X509_ATTRIBUTE *xa=NULL;
static char buf[1024];
ASN1_BIT_STRING *bs=NULL;
ASN1_TYPE *at=NULL;
start:
BIO_printf(bio_err,"%s [%s]:",text,def);
BIO_flush(bio_err);
if (value != NULL)
{
strcpy(buf,value);
strcat(buf,"\n");
BIO_printf(bio_err,"%s\n",value);
}
else
{
buf[0]='\0';
fgets(buf,1024,stdin);
}
if (buf[0] == '\0') return(0);
else if (buf[0] == '\n')
{
if ((def == NULL) || (def[0] == '\0'))
return(1);
strcpy(buf,def);
strcat(buf,"\n");
}
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';
/* add object plus value */
if ((xa=X509_ATTRIBUTE_new()) == NULL)
goto err;
if ((xa->value.set=sk_new_null()) == NULL)
goto err;
xa->set=1;
if (xa->object != NULL) ASN1_OBJECT_free(xa->object);
xa->object=OBJ_nid2obj(nid);
if ((bs=ASN1_BIT_STRING_new()) == NULL) goto err;
bs->type=ASN1_PRINTABLE_type((unsigned char *)buf,-1);
z=req_fix_data(nid,&bs->type,i,min,max);
if (z == 0)
{
if (value == NULL)
goto start;
else goto err;
}
if (!ASN1_STRING_set(bs,(unsigned char *)buf,i+1))
{ BIO_printf(bio_err,"Malloc failure\n"); goto err; }
if ((at=ASN1_TYPE_new()) == NULL)
{ BIO_printf(bio_err,"Malloc failure\n"); goto err; }
ASN1_TYPE_set(at,bs->type,(char *)bs);
sk_push(xa->value.set,(char *)at);
bs=NULL;
at=NULL;
/* only one item per attribute */
if (!sk_X509_ATTRIBUTE_push(n,xa)) goto err;
return(1);
err:
if (xa != NULL) X509_ATTRIBUTE_free(xa);
if (at != NULL) ASN1_TYPE_free(at);
if (bs != NULL) ASN1_BIT_STRING_free(bs);
return(0);
}
static void MS_CALLBACK req_cb(int p, int n, char *arg)
{
char c='*';
if (p == 0) c='.';
if (p == 1) c='+';
if (p == 2) c='*';
if (p == 3) c='\n';
BIO_write((BIO *)arg,&c,1);
BIO_flush((BIO *)arg);
#ifdef LINT
p=n;
#endif
}
static int req_fix_data(int nid, int *type, int len, int min, int max)
{
if (nid == NID_pkcs9_emailAddress)
*type=V_ASN1_IA5STRING;
if ((nid == NID_commonName) && (*type == V_ASN1_IA5STRING))
*type=V_ASN1_T61STRING;
if ((nid == NID_pkcs9_challengePassword) &&
(*type == V_ASN1_IA5STRING))
*type=V_ASN1_T61STRING;
if ((nid == NID_pkcs9_unstructuredName) &&
(*type == V_ASN1_T61STRING))
{
BIO_printf(bio_err,"invalid characters in string, please re-enter the string\n");
return(0);
}
if (nid == NID_pkcs9_unstructuredName)
*type=V_ASN1_IA5STRING;
if (len < min)
{
BIO_printf(bio_err,"string is too short, it needs to be at least %d bytes long\n",min);
return(0);
}
if ((max != 0) && (len > max))
{
BIO_printf(bio_err,"string is too long, it needs to be less than %d bytes long\n",max);
return(0);
}
return(1);
}
/* Check if the end of a string matches 'end' */
static int check_end(char *str, char *end)
{
int elen, slen;
char *tmp;
elen = strlen(end);
slen = strlen(str);
if(elen > slen) return 1;
tmp = str + slen - elen;
return strcmp(tmp, end);
}
static int add_oid_section(LHASH *conf)
{
char *p;
STACK *sktmp;
CONF_VALUE *cnf;
int i;
if(!(p=CONF_get_string(conf,NULL,"oid_section"))) return 1;
if(!(sktmp = CONF_get_section(conf, p))) {
BIO_printf(bio_err, "problem loading oid section %s\n", p);
return 0;
}
for(i = 0; i < sk_num(sktmp); i++) {
cnf = (CONF_VALUE *)sk_value(sktmp, i);
if(OBJ_create(cnf->value, cnf->name, cnf->name) == NID_undef) {
BIO_printf(bio_err, "problem creating object %s=%s\n",
cnf->name, cnf->value);
return 0;
}
}
return 1;
}
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