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openssl/apps/req.c
Richard Levitte d303b9d85e Make the handling of output and input formats consistent 
Most of all, we needed to sort out which ones are binary and which
ones are text, and make sure they are treated accordingly and
consistently so

Reviewed-by: Tim Hudson <tjh@openssl.org>
2015-09-06 01:29:36 +02:00

1549 lines
48 KiB
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/* 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>
#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
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);
static int genpkey_cb(EVP_PKEY_CTX *ctx);
static int req_check_len(int len, int n_min, int n_max);
static int check_end(const char *str, const char *end);
static EVP_PKEY_CTX *set_keygen_ctx(const char *gstr,
int *pkey_type, long *pkeylen,
char **palgnam, ENGINE *keygen_engine);
static CONF *req_conf = NULL;
static int batch = 0;
typedef enum OPTION_choice {
OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
OPT_INFORM, OPT_OUTFORM, OPT_ENGINE, OPT_KEYGEN_ENGINE, OPT_KEY,
OPT_PUBKEY, OPT_NEW, OPT_CONFIG, OPT_KEYFORM, OPT_IN, OPT_OUT,
OPT_KEYOUT, OPT_PASSIN, OPT_PASSOUT, OPT_RAND, OPT_NEWKEY,
OPT_PKEYOPT, OPT_SIGOPT, OPT_BATCH, OPT_NEWHDR, OPT_MODULUS,
OPT_VERIFY, OPT_NODES, OPT_NOOUT, OPT_VERBOSE, OPT_UTF8,
OPT_NAMEOPT, OPT_REQOPT, OPT_SUBJ, OPT_SUBJECT, OPT_TEXT, OPT_X509,
OPT_MULTIVALUE_RDN, OPT_DAYS, OPT_SET_SERIAL, OPT_EXTENSIONS,
OPT_REQEXTS, OPT_MD
} OPTION_CHOICE;
OPTIONS req_options[] = {
{"help", OPT_HELP, '-', "Display this summary"},
{"inform", OPT_INFORM, 'F', "Input format - DER or PEM"},
{"outform", OPT_OUTFORM, 'F', "Output format - DER or PEM"},
{"in", OPT_IN, '<', "Input file"},
{"out", OPT_OUT, '>', "Output file"},
{"key", OPT_KEY, '<', "Use the private key contained in file"},
{"keyform", OPT_KEYFORM, 'F', "Key file format"},
{"pubkey", OPT_PUBKEY, '-', "Output public key"},
{"new", OPT_NEW, '-', "New request"},
{"config", OPT_CONFIG, '<', "Request template file"},
{"keyout", OPT_KEYOUT, '>', "File to send the key to"},
{"passin", OPT_PASSIN, 's', "Private key password source"},
{"passout", OPT_PASSOUT, 's'},
{"rand", OPT_RAND, 's',
"Load the file(s) into the random number generator"},
{"newkey", OPT_NEWKEY, 's', "Specify as type:bits"},
{"pkeyopt", OPT_PKEYOPT, 's'},
{"sigopt", OPT_SIGOPT, 's'},
{"batch", OPT_BATCH, '-',
"Do not ask anything during request generation"},
{"newhdr", OPT_NEWHDR, '-', "Output \"NEW\" in the header lines"},
{"modulus", OPT_MODULUS, '-', "RSA modulus"},
{"verify", OPT_VERIFY, '-', "Verify signature on REQ"},
{"nodes", OPT_NODES, '-', "Don't encrypt the output key"},
{"noout", OPT_NOOUT, '-', "Do not output REQ"},
{"verbose", OPT_VERBOSE, '-'},
{"utf8", OPT_UTF8, '-', "Input characters are UTF8 (default ASCII)"},
{"nameopt", OPT_NAMEOPT, 's', "Various certificate name options"},
{"reqopt", OPT_REQOPT, 's', "Various request text options"},
{"text", OPT_TEXT, '-', "Text form of request"},
{"x509", OPT_X509, '-',
"Output a x509 structure instead of a cert request"},
{OPT_MORE_STR, 1, 1, "(Required by some CA's)"},
{"subj", OPT_SUBJ, 's', "Set or modify request subject"},
{"subject", OPT_SUBJECT, '-', "Output the request's subject"},
{"multivalue-rdn", OPT_MULTIVALUE_RDN, '-',
"Enable support for multivalued RDNs"},
{"days", OPT_DAYS, 'p', "Number of days cert is valid for"},
{"set-serial", OPT_SET_SERIAL, 'p', "Serial number to use"},
{"extensions", OPT_EXTENSIONS, 's',
"Cert extension section (override value in config file)"},
{"reqexts", OPT_REQEXTS, 's',
"Request extension section (override value in config file)"},
{"", OPT_MD, '-', "Any supported digest"},
#ifndef OPENSSL_NO_ENGINE
{"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
{"keygen_engine", OPT_KEYGEN_ENGINE, 's'},
#endif
{NULL}
};
int req_main(int argc, char **argv)
{
ASN1_INTEGER *serial = NULL;
BIO *in = NULL, *out = NULL;
ENGINE *e = NULL, *gen_eng = NULL;
EVP_PKEY *pkey = NULL;
EVP_PKEY_CTX *genctx = NULL;
STACK_OF(OPENSSL_STRING) *pkeyopts = NULL, *sigopts = NULL;
X509 *x509ss = NULL;
X509_REQ *req = NULL;
const EVP_CIPHER *cipher = NULL;
const EVP_MD *md_alg = NULL, *digest = NULL;
char *extensions = NULL, *infile = NULL;
char *outfile = NULL, *keyfile = NULL, *inrand = NULL;
char *keyalgstr = NULL, *p, *prog, *passargin = NULL, *passargout = NULL;
char *passin = NULL, *passout = NULL, *req_exts = NULL, *subj = NULL;
char *template = default_config_file, *keyout = NULL;
const char *keyalg = NULL;
OPTION_CHOICE o;
int ret = 1, x509 = 0, days = 30, i = 0, newreq = 0, verbose = 0;
int pkey_type = -1, private = 0;
int informat = FORMAT_PEM, outformat = FORMAT_PEM, keyform = FORMAT_PEM;
int modulus = 0, multirdn = 0, verify = 0, noout = 0, text = 0;
int nodes = 0, newhdr = 0, subject = 0, pubkey = 0;
long newkey = -1;
unsigned long chtype = MBSTRING_ASC, nmflag = 0, reqflag = 0;
char nmflag_set = 0;
#ifndef OPENSSL_NO_DES
cipher = EVP_des_ede3_cbc();
#endif
prog = opt_init(argc, argv, req_options);
while ((o = opt_next()) != OPT_EOF) {
switch (o) {
case OPT_EOF:
case OPT_ERR:
opthelp:
BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
goto end;
case OPT_HELP:
opt_help(req_options);
ret = 0;
goto end;
case OPT_INFORM:
if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &informat))
goto opthelp;
break;
case OPT_OUTFORM:
if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &outformat))
goto opthelp;
break;
case OPT_ENGINE:
(void)setup_engine(opt_arg(), 0);
break;
case OPT_KEYGEN_ENGINE:
#ifndef OPENSSL_NO_ENGINE
gen_eng = ENGINE_by_id(opt_arg());
if (gen_eng == NULL) {
BIO_printf(bio_err, "Can't find keygen engine %s\n", *argv);
goto opthelp;
}
#endif
break;
case OPT_KEY:
keyfile = opt_arg();
break;
case OPT_PUBKEY:
pubkey = 1;
break;
case OPT_NEW:
newreq = 1;
break;
case OPT_CONFIG:
template = opt_arg();
break;
case OPT_KEYFORM:
if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &keyform))
goto opthelp;
break;
case OPT_IN:
infile = opt_arg();
break;
case OPT_OUT:
outfile = opt_arg();
break;
case OPT_KEYOUT:
keyout = opt_arg();
break;
case OPT_PASSIN:
passargin = opt_arg();
break;
case OPT_PASSOUT:
passargout = opt_arg();
break;
case OPT_RAND:
inrand = opt_arg();
break;
case OPT_NEWKEY:
keyalg = opt_arg();
newreq = 1;
break;
case OPT_PKEYOPT:
if (!pkeyopts)
pkeyopts = sk_OPENSSL_STRING_new_null();
if (!pkeyopts || !sk_OPENSSL_STRING_push(pkeyopts, opt_arg()))
goto opthelp;
break;
case OPT_SIGOPT:
if (!sigopts)
sigopts = sk_OPENSSL_STRING_new_null();
if (!sigopts || !sk_OPENSSL_STRING_push(sigopts, opt_arg()))
goto opthelp;
break;
case OPT_BATCH:
batch = 1;
break;
case OPT_NEWHDR:
newhdr = 1;
break;
case OPT_MODULUS:
modulus = 1;
break;
case OPT_VERIFY:
verify = 1;
break;
case OPT_NODES:
nodes = 1;
break;
case OPT_NOOUT:
noout = 1;
break;
case OPT_VERBOSE:
verbose = 1;
break;
case OPT_UTF8:
chtype = MBSTRING_UTF8;
break;
case OPT_NAMEOPT:
nmflag_set = 1;
if (!set_name_ex(&nmflag, opt_arg()))
goto opthelp;
break;
case OPT_REQOPT:
if (!set_cert_ex(&reqflag, opt_arg()))
goto opthelp;
break;
case OPT_TEXT:
text = 1;
break;
case OPT_X509:
x509 = 1;
break;
case OPT_DAYS:
days = atoi(opt_arg());
break;
case OPT_SET_SERIAL:
serial = s2i_ASN1_INTEGER(NULL, opt_arg());
if (serial == NULL)
goto opthelp;
break;
case OPT_SUBJECT:
subject = 1;
break;
case OPT_SUBJ:
subj = opt_arg();
break;
case OPT_MULTIVALUE_RDN:
multirdn = 1;
break;
case OPT_EXTENSIONS:
extensions = opt_arg();
break;
case OPT_REQEXTS:
req_exts = opt_arg();
break;
case OPT_MD:
if (!opt_md(opt_unknown(), &md_alg))
goto opthelp;
digest = md_alg;
break;
}
}
argc = opt_num_rest();
argv = opt_rest();
if (!nmflag_set)
nmflag = XN_FLAG_ONELINE;
private = newreq && (pkey == NULL) ? 1 : 0;
if (!app_passwd(passargin, passargout, &passin, &passout)) {
BIO_printf(bio_err, "Error getting passwords\n");
goto end;
}
if (verbose)
BIO_printf(bio_err, "Using configuration from %s\n", template);
req_conf = app_load_config(template);
if (!app_load_modules(req_conf))
goto end;
if (req_conf != NULL) {
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(req_conf))
goto end;
if (md_alg == NULL) {
p = NCONF_get_string(req_conf, SECTION, "default_md");
if (p == NULL)
ERR_clear_error();
else {
if (!opt_md(p, &md_alg))
goto opthelp;
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") == 0)
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;
}
}
if (keyfile != NULL) {
pkey = load_key(keyfile, keyform, 0, passin, e, "Private Key");
if (!pkey) {
/* load_key() has already printed an appropriate message */
goto end;
} else {
char *randfile = NCONF_get_string(req_conf, SECTION, "RANDFILE");
if (randfile == NULL)
ERR_clear_error();
app_RAND_load_file(randfile, 0);
}
}
if (newreq && (pkey == NULL)) {
char *randfile = NCONF_get_string(req_conf, SECTION, "RANDFILE");
if (randfile == NULL)
ERR_clear_error();
app_RAND_load_file(randfile, 0);
if (inrand)
app_RAND_load_files(inrand);
if (!NCONF_get_number(req_conf, SECTION, BITS, &newkey)) {
newkey = DEFAULT_KEY_LENGTH;
}
if (keyalg) {
genctx = set_keygen_ctx(keyalg, &pkey_type, &newkey,
&keyalgstr, gen_eng);
if (!genctx)
goto end;
}
if (newkey < MIN_KEY_LENGTH
&& (pkey_type == EVP_PKEY_RSA || pkey_type == EVP_PKEY_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;
}
if (!genctx) {
genctx = set_keygen_ctx(NULL, &pkey_type, &newkey,
&keyalgstr, gen_eng);
if (!genctx)
goto end;
}
if (pkeyopts) {
char *genopt;
for (i = 0; i < sk_OPENSSL_STRING_num(pkeyopts); i++) {
genopt = sk_OPENSSL_STRING_value(pkeyopts, i);
if (pkey_ctrl_string(genctx, genopt) <= 0) {
BIO_printf(bio_err, "parameter error \"%s\"\n", genopt);
ERR_print_errors(bio_err);
goto end;
}
}
}
BIO_printf(bio_err, "Generating a %ld bit %s private key\n",
newkey, keyalgstr);
EVP_PKEY_CTX_set_cb(genctx, genpkey_cb);
EVP_PKEY_CTX_set_app_data(genctx, bio_err);
if (EVP_PKEY_keygen(genctx, &pkey) <= 0) {
BIO_puts(bio_err, "Error Generating Key\n");
goto end;
}
EVP_PKEY_CTX_free(genctx);
genctx = NULL;
app_RAND_write_file(randfile);
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");
else
BIO_printf(bio_err, "writing new private key to '%s'\n", keyout);
out = bio_open_owner(keyout, "w", private);
if (out == NULL)
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:
assert(private);
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_free(out);
out = NULL;
BIO_printf(bio_err, "-----\n");
}
if (!newreq) {
in = bio_open_default(infile, RB(informat));
if (in == NULL)
goto end;
if (informat == FORMAT_ASN1)
req = d2i_X509_REQ_bio(in, NULL);
else
req = PEM_read_bio_X509_REQ(in, NULL, NULL, NULL);
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;
}
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 (!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_time_adj_ex(X509_get_notAfter(x509ss), days, 0, NULL))
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;
}
i = do_X509_sign(x509ss, pkey, digest, sigopts);
if (!i) {
ERR_print_errors(bio_err);
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;
}
i = do_X509_REQ_sign(req, pkey, digest, sigopts);
if (!i) {
ERR_print_errors(bio_err);
goto end;
}
}
}
if (subj && x509) {
BIO_printf(bio_err, "Cannot modify 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");
ret = 1;
goto end;
}
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) {
ret = 0;
goto end;
}
out = bio_open_default(outfile,
keyout != NULL && outfile != NULL &&
strcmp(keyout, outfile) == 0
? AB(outformat) : WB(outformat));
if (out == NULL)
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 (EVP_PKEY_base_id(tpubkey) == 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 (newhdr)
i = PEM_write_bio_X509_REQ_NEW(out, req);
else
i = PEM_write_bio_X509_REQ(out, req);
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
i = PEM_write_bio_X509(out, x509ss);
if (!i) {
BIO_printf(bio_err, "unable to write X509 certificate\n");
goto end;
}
}
ret = 0;
end:
if (ret) {
ERR_print_errors(bio_err);
}
NCONF_free(req_conf);
BIO_free(in);
BIO_free_all(out);
EVP_PKEY_free(pkey);
EVP_PKEY_CTX_free(genctx);
sk_OPENSSL_STRING_free(pkeyopts);
sk_OPENSSL_STRING_free(sigopts);
#ifndef OPENSSL_NO_ENGINE
ENGINE_free(gen_eng);
#endif
OPENSSL_free(keyalgstr);
X509_REQ_free(req);
X509_free(x509ss);
ASN1_INTEGER_free(serial);
OPENSSL_free(passin);
OPENSSL_free(passout);
OBJ_cleanup();
return (ret);
}
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") == 0)
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 (subj)
i = build_subject(req, subj, chtype, multirdn);
else if (no_prompt)
i = auto_info(req, dn_sk, attr_sk, attribs, chtype);
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)) == NULL)
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)) {
ERR_clear_error();
n_min = -1;
}
BIO_snprintf(buf, sizeof buf, "%s_max", type);
if (!NCONF_get_number(req_conf, attr_sect, buf, &n_max)) {
ERR_clear_error();
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;
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) {
if (!fgets(buf, sizeof buf, stdin))
return 0;
} 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)) {
if (batch || value)
return 0;
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) {
if (!fgets(buf, sizeof buf, stdin))
return 0;
} 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)) {
if (batch || value)
return 0;
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);
}
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);
}
static EVP_PKEY_CTX *set_keygen_ctx(const char *gstr,
int *pkey_type, long *pkeylen,
char **palgnam, ENGINE *keygen_engine)
{
EVP_PKEY_CTX *gctx = NULL;
EVP_PKEY *param = NULL;
long keylen = -1;
BIO *pbio = NULL;
const char *paramfile = NULL;
if (gstr == NULL) {
*pkey_type = EVP_PKEY_RSA;
keylen = *pkeylen;
} else if (gstr[0] >= '0' && gstr[0] <= '9') {
*pkey_type = EVP_PKEY_RSA;
keylen = atol(gstr);
*pkeylen = keylen;
} else if (strncmp(gstr, "param:", 6) == 0)
paramfile = gstr + 6;
else {
const char *p = strchr(gstr, ':');
int len;
ENGINE *tmpeng;
const EVP_PKEY_ASN1_METHOD *ameth;
if (p)
len = p - gstr;
else
len = strlen(gstr);
/*
* The lookup of a the string will cover all engines so keep a note
* of the implementation.
*/
ameth = EVP_PKEY_asn1_find_str(&tmpeng, gstr, len);
if (!ameth) {
BIO_printf(bio_err, "Unknown algorithm %.*s\n", len, gstr);
return NULL;
}
EVP_PKEY_asn1_get0_info(NULL, pkey_type, NULL, NULL, NULL, ameth);
#ifndef OPENSSL_NO_ENGINE
if (tmpeng)
ENGINE_finish(tmpeng);
#endif
if (*pkey_type == EVP_PKEY_RSA) {
if (p) {
keylen = atol(p + 1);
*pkeylen = keylen;
} else
keylen = *pkeylen;
} else if (p)
paramfile = p + 1;
}
if (paramfile) {
pbio = BIO_new_file(paramfile, "r");
if (!pbio) {
BIO_printf(bio_err, "Can't open parameter file %s\n", paramfile);
return NULL;
}
param = PEM_read_bio_Parameters(pbio, NULL);
if (!param) {
X509 *x;
(void)BIO_reset(pbio);
x = PEM_read_bio_X509(pbio, NULL, NULL, NULL);
if (x) {
param = X509_get_pubkey(x);
X509_free(x);
}
}
BIO_free(pbio);
if (!param) {
BIO_printf(bio_err, "Error reading parameter file %s\n", paramfile);
return NULL;
}
if (*pkey_type == -1)
*pkey_type = EVP_PKEY_id(param);
else if (*pkey_type != EVP_PKEY_base_id(param)) {
BIO_printf(bio_err, "Key Type does not match parameters\n");
EVP_PKEY_free(param);
return NULL;
}
}
if (palgnam) {
const EVP_PKEY_ASN1_METHOD *ameth;
ENGINE *tmpeng;
const char *anam;
ameth = EVP_PKEY_asn1_find(&tmpeng, *pkey_type);
if (!ameth) {
BIO_puts(bio_err, "Internal error: can't find key algorithm\n");
return NULL;
}
EVP_PKEY_asn1_get0_info(NULL, NULL, NULL, NULL, &anam, ameth);
*palgnam = BUF_strdup(anam);
#ifndef OPENSSL_NO_ENGINE
if (tmpeng)
ENGINE_finish(tmpeng);
#endif
}
if (param) {
gctx = EVP_PKEY_CTX_new(param, keygen_engine);
*pkeylen = EVP_PKEY_bits(param);
EVP_PKEY_free(param);
} else
gctx = EVP_PKEY_CTX_new_id(*pkey_type, keygen_engine);
if (!gctx) {
BIO_puts(bio_err, "Error allocating keygen context\n");
ERR_print_errors(bio_err);
return NULL;
}
if (EVP_PKEY_keygen_init(gctx) <= 0) {
BIO_puts(bio_err, "Error initializing keygen context\n");
ERR_print_errors(bio_err);
return NULL;
}
#ifndef OPENSSL_NO_RSA
if ((*pkey_type == EVP_PKEY_RSA) && (keylen != -1)) {
if (EVP_PKEY_CTX_set_rsa_keygen_bits(gctx, keylen) <= 0) {
BIO_puts(bio_err, "Error setting RSA keysize\n");
ERR_print_errors(bio_err);
EVP_PKEY_CTX_free(gctx);
return NULL;
}
}
#endif
return gctx;
}
static int genpkey_cb(EVP_PKEY_CTX *ctx)
{
char c = '*';
BIO *b = EVP_PKEY_CTX_get_app_data(ctx);
int p;
p = EVP_PKEY_CTX_get_keygen_info(ctx, 0);
if (p == 0)
c = '.';
if (p == 1)
c = '+';
if (p == 2)
c = '*';
if (p == 3)
c = '\n';
BIO_write(b, &c, 1);
(void)BIO_flush(b);
return 1;
}
static int do_sign_init(EVP_MD_CTX *ctx, EVP_PKEY *pkey,
const EVP_MD *md, STACK_OF(OPENSSL_STRING) *sigopts)
{
EVP_PKEY_CTX *pkctx = NULL;
int i;
EVP_MD_CTX_init(ctx);
if (!EVP_DigestSignInit(ctx, &pkctx, md, NULL, pkey))
return 0;
for (i = 0; i < sk_OPENSSL_STRING_num(sigopts); i++) {
char *sigopt = sk_OPENSSL_STRING_value(sigopts, i);
if (pkey_ctrl_string(pkctx, sigopt) <= 0) {
BIO_printf(bio_err, "parameter error \"%s\"\n", sigopt);
ERR_print_errors(bio_err);
return 0;
}
}
return 1;
}
int do_X509_sign(X509 *x, EVP_PKEY *pkey, const EVP_MD *md,
STACK_OF(OPENSSL_STRING) *sigopts)
{
int rv;
EVP_MD_CTX mctx;
EVP_MD_CTX_init(&mctx);
rv = do_sign_init(&mctx, pkey, md, sigopts);
if (rv > 0)
rv = X509_sign_ctx(x, &mctx);
EVP_MD_CTX_cleanup(&mctx);
return rv > 0 ? 1 : 0;
}
int do_X509_REQ_sign(X509_REQ *x, EVP_PKEY *pkey, const EVP_MD *md,
STACK_OF(OPENSSL_STRING) *sigopts)
{
int rv;
EVP_MD_CTX mctx;
EVP_MD_CTX_init(&mctx);
rv = do_sign_init(&mctx, pkey, md, sigopts);
if (rv > 0)
rv = X509_REQ_sign_ctx(x, &mctx);
EVP_MD_CTX_cleanup(&mctx);
return rv > 0 ? 1 : 0;
}
int do_X509_CRL_sign(X509_CRL *x, EVP_PKEY *pkey, const EVP_MD *md,
STACK_OF(OPENSSL_STRING) *sigopts)
{
int rv;
EVP_MD_CTX mctx;
EVP_MD_CTX_init(&mctx);
rv = do_sign_init(&mctx, pkey, md, sigopts);
if (rv > 0)
rv = X509_CRL_sign_ctx(x, &mctx);
EVP_MD_CTX_cleanup(&mctx);
return rv > 0 ? 1 : 0;
}
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