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/*
* Copyright 1995-2017 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the OpenSSL license (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
#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 2048
#define MIN_KEY_LENGTH 512
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, const char *subj, unsigned long chtype,
int multirdn);
static int prompt_info(X509_REQ *req,
STACK_OF(CONF_VALUE) *dn_sk, const char *dn_sect,
STACK_OF(CONF_VALUE) *attr_sk, const 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 int join(char buf[], size_t buf_size, const char *name,
const char *tail, const char *desc);
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_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_PRECERT, OPT_MD,
OPT_R_ENUM
} OPTION_CHOICE;
const 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, 's', "Private key to use"},
{"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', "Output file pass phrase source"},
OPT_R_OPTIONS,
{"newkey", OPT_NEWKEY, 's', "Specify as type:bits"},
{"pkeyopt", OPT_PKEYOPT, 's', "Public key options as opt:value"},
{"sigopt", OPT_SIGOPT, 's', "Signature parameter in n:v form"},
{"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, '-', "Verbose output"},
{"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, 's', "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)"},
{"precert", OPT_PRECERT, '-', "Add a poison extension (implies -new)"},
{"", 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',
"Specify engine to be used for key generation operations"},
#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;
char *keyalgstr = NULL, *p, *prog, *passargin = NULL, *passargout = NULL;
char *passin = NULL, *passout = NULL;
char *nofree_passin = NULL, *nofree_passout = NULL;
char *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, precert = 0;
long newkey = -1;
unsigned long chtype = MBSTRING_ASC, reqflag = 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:
e = 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_ANY, &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_R_CASES:
if (!opt_rand(o))
goto end;
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:
if (!set_nameopt(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:
if (serial != NULL) {
BIO_printf(bio_err, "Serial number supplied twice\n");
goto opthelp;
}
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_PRECERT:
newreq = precert = 1;
break;
case OPT_MD:
if (!opt_md(opt_unknown(), &md_alg))
goto opthelp;
digest = md_alg;
break;
}
}
argc = opt_num_rest();
if (argc != 0)
goto opthelp;
if (x509 && infile == NULL)
newreq = 1;
/* TODO: simplify this as pkey is still always NULL here */
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 (template != default_config_file && !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 == NULL) {
extensions = NCONF_get_string(req_conf, SECTION, V3_EXTENSIONS);
if (extensions == NULL)
ERR_clear_error();
}
if (extensions != NULL) {
/* 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 == NULL) {
passin = nofree_passin =
NCONF_get_string(req_conf, SECTION, "input_password");
if (passin == NULL)
ERR_clear_error();
}
if (passout == NULL) {
passout = nofree_passout =
NCONF_get_string(req_conf, SECTION, "output_password");
if (passout == NULL)
ERR_clear_error();
}
p = NCONF_get_string(req_conf, SECTION, STRING_MASK);
if (p == NULL)
ERR_clear_error();
if (p != NULL && !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 == NULL)
ERR_clear_error();
else if (strcmp(p, "yes") == 0)
chtype = MBSTRING_UTF8;
}
if (req_exts == NULL) {
req_exts = NCONF_get_string(req_conf, SECTION, REQ_EXTENSIONS);
if (req_exts == NULL)
ERR_clear_error();
}
if (req_exts != NULL) {
/* 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 == NULL) {
/* load_key() has already printed an appropriate message */
goto end;
} else {
app_RAND_load_conf(req_conf, SECTION);
}
}
if (newreq && (pkey == NULL)) {
app_RAND_load_conf(req_conf, SECTION);
if (!NCONF_get_number(req_conf, SECTION, BITS, &newkey)) {
newkey = DEFAULT_KEY_LENGTH;
}
if (keyalg != NULL) {
genctx = set_keygen_ctx(keyalg, &pkey_type, &newkey,
&keyalgstr, gen_eng);
if (genctx == NULL)
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 == NULL) {
genctx = set_keygen_ctx(NULL, &pkey_type, &newkey,
&keyalgstr, gen_eng);
if (!genctx)
goto end;
}
if (pkeyopts != NULL) {
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;
}
}
}
if (pkey_type == EVP_PKEY_EC) {
BIO_printf(bio_err, "Generating an EC private key\n");
} else {
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;
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, outformat, 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, 'r', 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 != NULL && !X509_set_version(x509ss, 2))
goto end;
if (serial != NULL) {
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 (!set_cert_times(x509ss, NULL, NULL, days))
goto end;
if (!X509_set_subject_name
(x509ss, X509_REQ_get_subject_name(req)))
goto end;
tmppkey = X509_REQ_get0_pubkey(req);
if (!tmppkey || !X509_set_pubkey(x509ss, tmppkey))
goto end;
/* 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 != NULL && !X509V3_EXT_add_nconf(req_conf,
&ext_ctx, extensions,
x509ss)) {
BIO_printf(bio_err, "Error Loading extension section %s\n",
extensions);
goto end;
}
/* If a pre-cert was requested, we need to add a poison extension */
if (precert) {
if (X509_add1_ext_i2d(x509ss, NID_ct_precert_poison, NULL, 1, 0)
!= 1) {
BIO_printf(bio_err, "Error adding poison extension\n");
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 != NULL
&& !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), get_nameopt());
}
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), get_nameopt());
}
}
if (verify && !x509) {
EVP_PKEY *tpubkey = pkey;
if (tpubkey == NULL) {
tpubkey = X509_REQ_get0_pubkey(req);
if (tpubkey == NULL)
goto end;
}
i = X509_REQ_verify(req, tpubkey);
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 ? 'a' : 'w',
outformat);
if (out == NULL)
goto end;
if (pubkey) {
EVP_PKEY *tpubkey = X509_REQ_get0_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);
}
if (text) {
if (x509)
X509_print_ex(out, x509ss, get_nameopt(), reqflag);
else
X509_REQ_print_ex(out, req, get_nameopt(), reqflag);
}
if (subject) {
if (x509)
print_name(out, "subject=", X509_get_subject_name(x509ss),
get_nameopt());
else
print_name(out, "subject=", X509_REQ_get_subject_name(req),
get_nameopt());
}
if (modulus) {
EVP_PKEY *tpubkey;
if (x509)
tpubkey = X509_get0_pubkey(x509ss);
else
tpubkey = X509_REQ_get0_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) {
const BIGNUM *n;
RSA_get0_key(EVP_PKEY_get0_RSA(tpubkey), &n, NULL, NULL);
BN_print(out, 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 (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);
release_engine(e);
if (passin != nofree_passin)
OPENSSL_free(passin);
if (passout != nofree_passout)
OPENSSL_free(passout);
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, const 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, const char *dn_sect,
STACK_OF(CONF_VALUE) *attr_sk, const 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 (!join(buf, sizeof(buf), v->name, "_default", "Name"))
return 0;
if ((def = NCONF_get_string(req_conf, dn_sect, buf)) == NULL) {
ERR_clear_error();
def = "";
}
if (!join(buf, sizeof(buf), v->name, "_value", "Name"))
return 0;
if ((value = NCONF_get_string(req_conf, dn_sect, buf)) == NULL) {
ERR_clear_error();
value = NULL;
}
if (!join(buf, sizeof(buf), v->name, "_min", "Name"))
return 0;
if (!NCONF_get_number(req_conf, dn_sect, buf, &n_min)) {
ERR_clear_error();
n_min = -1;
}
if (!join(buf, sizeof(buf), v->name, "_max", "Name"))
return 0;
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 (!join(buf, sizeof(buf), type, "_default", "Name"))
return 0;
if ((def = NCONF_get_string(req_conf, attr_sect, buf))
== NULL) {
ERR_clear_error();
def = "";
}
if (!join(buf, sizeof(buf), type, "_value", "Name"))
return 0;
if ((value = NCONF_get_string(req_conf, attr_sect, buf))
== NULL) {
ERR_clear_error();
value = NULL;
}
if (!join(buf, sizeof(buf), type,"_min", "Name"))
return 0;
if (!NCONF_get_number(req_conf, attr_sect, buf, &n_min)) {
ERR_clear_error();
n_min = -1;
}
if (!join(buf, sizeof(buf), type, "_max", "Name"))
return 0;
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, spec_char, plus_char;
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
spec_char = ((*p == ':') || (*p == ',') || (*p == '.'));
#else
spec_char = ((*p == os_toascii[':']) || (*p == os_toascii[','])
|| (*p == os_toascii['.']));
#endif
if (spec_char) {
p++;
if (*p)
type = p;
break;
}
}
#ifndef CHARSET_EBCDIC
plus_char = (*type == '+');
#else
plus_char = (*type == os_toascii['+']);
#endif
if (plus_char) {
type++;
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) {
if (!join(buf, sizeof(buf), value, "\n", "DN value"))
return 0;
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;
if (buf[0] == '\n') {
if ((def == NULL) || (def[0] == '\0'))
return 1;
if (!join(buf, sizeof(buf), def, "\n", "DN default"))
return 0;
} 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) {
if (!join(buf, sizeof(buf), value, "\n", "Attribute value"))
return 0;
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;
if (buf[0] == '\n') {
if ((def == NULL) || (def[0] == '\0'))
return 1;
if (!join(buf, sizeof(buf), def, "\n", "Attribute default"))
return 0;
} 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 no more 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)
{
size_t elen, slen;
const char *tmp;
elen = strlen(end);
slen = strlen(str);
if (elen > slen)
return 1;
tmp = str + slen - elen;
return strcmp(tmp, end);
}
/*
* Merge the two strings together into the result buffer checking for
* overflow and producing an error message if there is.
*/
static int join(char buf[], size_t buf_size, const char *name,
const char *tail, const char *desc)
{
const size_t name_len = strlen(name), tail_len = strlen(tail);
if (name_len + tail_len + 1 > buf_size) {
BIO_printf(bio_err, "%s '%s' too long\n", desc, name);
return 0;
}
memcpy(buf, name, name_len);
memcpy(buf + name_len, tail, tail_len + 1);
return 1;
}
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 != NULL)
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 == NULL) {
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
ENGINE_finish(tmpeng);
#endif
if (*pkey_type == EVP_PKEY_RSA) {
if (p != NULL) {
keylen = atol(p + 1);
*pkeylen = keylen;
} else {
keylen = *pkeylen;
}
} else if (p != NULL) {
paramfile = p + 1;
}
}
if (paramfile != NULL) {
pbio = BIO_new_file(paramfile, "r");
if (pbio == NULL) {
BIO_printf(bio_err, "Can't open parameter file %s\n", paramfile);
return NULL;
}
param = PEM_read_bio_Parameters(pbio, NULL);
if (param == NULL) {
X509 *x;
(void)BIO_reset(pbio);
x = PEM_read_bio_X509(pbio, NULL, NULL, NULL);
if (x != NULL) {
param = X509_get_pubkey(x);
X509_free(x);
}
}
BIO_free(pbio);
if (param == NULL) {
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 != NULL) {
const EVP_PKEY_ASN1_METHOD *ameth;
ENGINE *tmpeng;
const char *anam;
ameth = EVP_PKEY_asn1_find(&tmpeng, *pkey_type);
if (ameth == NULL) {
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 = OPENSSL_strdup(anam);
#ifndef OPENSSL_NO_ENGINE
ENGINE_finish(tmpeng);
#endif
}
if (param != NULL) {
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 == NULL) {
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);
EVP_PKEY_CTX_free(gctx);
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;
if (ctx == NULL)
return 0;
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_new();
rv = do_sign_init(mctx, pkey, md, sigopts);
if (rv > 0)
rv = X509_sign_ctx(x, mctx);
EVP_MD_CTX_free(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_new();
rv = do_sign_init(mctx, pkey, md, sigopts);
if (rv > 0)
rv = X509_REQ_sign_ctx(x, mctx);
EVP_MD_CTX_free(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_new();
rv = do_sign_init(mctx, pkey, md, sigopts);
if (rv > 0)
rv = X509_CRL_sign_ctx(x, mctx);
EVP_MD_CTX_free(mctx);
return rv > 0 ? 1 : 0;
}