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openssl/apps/x509.c
Yannik Sembritzki 7f4cc3bc34 Remove restriction to only cross-sign self-signed certificates 
CLA: trivial

Reviewed-by: Tomas Mraz <tomas@openssl.org>
Reviewed-by: Richard Levitte <levitte@openssl.org>
Reviewed-by: Paul Dale <pauli@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/21137)
2023-06-20 16:38:33 +10:00

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/*
* Copyright 1995-2022 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the Apache License 2.0 (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 <string.h>
#include "apps.h"
#include "progs.h"
#include <openssl/bio.h>
#include <openssl/asn1.h>
#include <openssl/err.h>
#include <openssl/bn.h>
#include <openssl/evp.h>
#include <openssl/x509.h>
#include <openssl/x509v3.h>
#include <openssl/objects.h>
#include <openssl/pem.h>
#include <openssl/rsa.h>
#ifndef OPENSSL_NO_DSA
# include <openssl/dsa.h>
#endif
#undef POSTFIX
#define POSTFIX ".srl"
#define DEFAULT_DAYS 30 /* default cert validity period in days */
#define UNSET_DAYS -2 /* -1 is used for testing expiration checks */
#define EXT_COPY_UNSET -1
static int callb(int ok, X509_STORE_CTX *ctx);
static ASN1_INTEGER *x509_load_serial(const char *CAfile,
const char *serialfile, int create);
static int purpose_print(BIO *bio, X509 *cert, X509_PURPOSE *pt);
static int print_x509v3_exts(BIO *bio, X509 *x, const char *ext_names);
typedef enum OPTION_choice {
OPT_COMMON,
OPT_INFORM, OPT_OUTFORM, OPT_KEYFORM, OPT_REQ, OPT_CAFORM,
OPT_CAKEYFORM, OPT_VFYOPT, OPT_SIGOPT, OPT_DAYS, OPT_PASSIN, OPT_EXTFILE,
OPT_EXTENSIONS, OPT_IN, OPT_OUT, OPT_KEY, OPT_SIGNKEY, OPT_CA, OPT_CAKEY,
OPT_CASERIAL, OPT_SET_SERIAL, OPT_NEW, OPT_FORCE_PUBKEY, OPT_SUBJ,
OPT_ADDTRUST, OPT_ADDREJECT, OPT_SETALIAS, OPT_CERTOPT, OPT_DATEOPT, OPT_NAMEOPT,
OPT_EMAIL, OPT_OCSP_URI, OPT_SERIAL, OPT_NEXT_SERIAL,
OPT_MODULUS, OPT_PUBKEY, OPT_X509TOREQ, OPT_TEXT, OPT_HASH,
OPT_ISSUER_HASH, OPT_SUBJECT, OPT_ISSUER, OPT_FINGERPRINT, OPT_DATES,
OPT_PURPOSE, OPT_STARTDATE, OPT_ENDDATE, OPT_CHECKEND, OPT_CHECKHOST,
OPT_CHECKEMAIL, OPT_CHECKIP, OPT_NOOUT, OPT_TRUSTOUT, OPT_CLRTRUST,
OPT_CLRREJECT, OPT_ALIAS, OPT_CACREATESERIAL, OPT_CLREXT, OPT_OCSPID,
OPT_SUBJECT_HASH_OLD, OPT_ISSUER_HASH_OLD, OPT_COPY_EXTENSIONS,
OPT_BADSIG, OPT_MD, OPT_ENGINE, OPT_NOCERT, OPT_PRESERVE_DATES,
OPT_R_ENUM, OPT_PROV_ENUM, OPT_EXT
} OPTION_CHOICE;
const OPTIONS x509_options[] = {
OPT_SECTION("General"),
{"help", OPT_HELP, '-', "Display this summary"},
{"in", OPT_IN, '<',
"Certificate input, or CSR input file with -req (default stdin)"},
{"passin", OPT_PASSIN, 's', "Private key and cert file pass-phrase source"},
{"new", OPT_NEW, '-', "Generate a certificate from scratch"},
{"x509toreq", OPT_X509TOREQ, '-',
"Output a certification request (rather than a certificate)"},
{"req", OPT_REQ, '-', "Input is a CSR file (rather than a certificate)"},
{"copy_extensions", OPT_COPY_EXTENSIONS, 's',
"copy extensions when converting from CSR to x509 or vice versa"},
{"inform", OPT_INFORM, 'f',
"CSR input format to use (PEM or DER; by default try PEM first)"},
{"vfyopt", OPT_VFYOPT, 's', "CSR verification parameter in n:v form"},
{"key", OPT_KEY, 's',
"Key for signing, and to include unless using -force_pubkey"},
{"signkey", OPT_SIGNKEY, 's',
"Same as -key"},
{"keyform", OPT_KEYFORM, 'E',
"Key input format (ENGINE, other values ignored)"},
{"out", OPT_OUT, '>', "Output file - default stdout"},
{"outform", OPT_OUTFORM, 'f',
"Output format (DER or PEM) - default PEM"},
{"nocert", OPT_NOCERT, '-',
"No cert output (except for requested printing)"},
{"noout", OPT_NOOUT, '-', "No output (except for requested printing)"},
OPT_SECTION("Certificate printing"),
{"text", OPT_TEXT, '-', "Print the certificate in text form"},
{"dateopt", OPT_DATEOPT, 's',
"Datetime format used for printing. (rfc_822/iso_8601). Default is rfc_822."},
{"certopt", OPT_CERTOPT, 's', "Various certificate text printing options"},
{"fingerprint", OPT_FINGERPRINT, '-', "Print the certificate fingerprint"},
{"alias", OPT_ALIAS, '-', "Print certificate alias"},
{"serial", OPT_SERIAL, '-', "Print serial number value"},
{"startdate", OPT_STARTDATE, '-', "Print the notBefore field"},
{"enddate", OPT_ENDDATE, '-', "Print the notAfter field"},
{"dates", OPT_DATES, '-', "Print both notBefore and notAfter fields"},
{"subject", OPT_SUBJECT, '-', "Print subject DN"},
{"issuer", OPT_ISSUER, '-', "Print issuer DN"},
{"nameopt", OPT_NAMEOPT, 's',
"Certificate subject/issuer name printing options"},
{"email", OPT_EMAIL, '-', "Print email address(es)"},
{"hash", OPT_HASH, '-', "Synonym for -subject_hash (for backward compat)"},
{"subject_hash", OPT_HASH, '-', "Print subject hash value"},
#ifndef OPENSSL_NO_MD5
{"subject_hash_old", OPT_SUBJECT_HASH_OLD, '-',
"Print old-style (MD5) subject hash value"},
#endif
{"issuer_hash", OPT_ISSUER_HASH, '-', "Print issuer hash value"},
#ifndef OPENSSL_NO_MD5
{"issuer_hash_old", OPT_ISSUER_HASH_OLD, '-',
"Print old-style (MD5) issuer hash value"},
#endif
{"ext", OPT_EXT, 's',
"Restrict which X.509 extensions to print and/or copy"},
{"ocspid", OPT_OCSPID, '-',
"Print OCSP hash values for the subject name and public key"},
{"ocsp_uri", OPT_OCSP_URI, '-', "Print OCSP Responder URL(s)"},
{"purpose", OPT_PURPOSE, '-', "Print out certificate purposes"},
{"pubkey", OPT_PUBKEY, '-', "Print the public key in PEM format"},
{"modulus", OPT_MODULUS, '-', "Print the RSA key modulus"},
OPT_SECTION("Certificate checking"),
{"checkend", OPT_CHECKEND, 'M',
"Check whether cert expires in the next arg seconds"},
{OPT_MORE_STR, 1, 1, "Exit 1 (failure) if so, 0 if not"},
{"checkhost", OPT_CHECKHOST, 's', "Check certificate matches host"},
{"checkemail", OPT_CHECKEMAIL, 's', "Check certificate matches email"},
{"checkip", OPT_CHECKIP, 's', "Check certificate matches ipaddr"},
OPT_SECTION("Certificate output"),
{"set_serial", OPT_SET_SERIAL, 's',
"Serial number to use, overrides -CAserial"},
{"next_serial", OPT_NEXT_SERIAL, '-',
"Increment current certificate serial number"},
{"days", OPT_DAYS, 'n',
"Number of days until newly generated certificate expires - default 30"},
{"preserve_dates", OPT_PRESERVE_DATES, '-',
"Preserve existing validity dates"},
{"subj", OPT_SUBJ, 's', "Set or override certificate subject (and issuer)"},
{"force_pubkey", OPT_FORCE_PUBKEY, '<',
"Key to be placed in new certificate or certificate request"},
{"clrext", OPT_CLREXT, '-',
"Do not take over any extensions from the source certificate or request"},
{"extfile", OPT_EXTFILE, '<', "Config file with X509V3 extensions to add"},
{"extensions", OPT_EXTENSIONS, 's',
"Section of extfile to use - default: unnamed section"},
{"sigopt", OPT_SIGOPT, 's', "Signature parameter, in n:v form"},
{"badsig", OPT_BADSIG, '-',
"Corrupt last byte of certificate signature (for test)"},
{"", OPT_MD, '-', "Any supported digest, used for signing and printing"},
OPT_SECTION("Micro-CA"),
{"CA", OPT_CA, '<',
"Use the given CA certificate, conflicts with -key"},
{"CAform", OPT_CAFORM, 'F', "CA cert format (PEM/DER/P12); has no effect"},
{"CAkey", OPT_CAKEY, 's', "The corresponding CA key; default is -CA arg"},
{"CAkeyform", OPT_CAKEYFORM, 'E',
"CA key format (ENGINE, other values ignored)"},
{"CAserial", OPT_CASERIAL, 's',
"File that keeps track of CA-generated serial number"},
{"CAcreateserial", OPT_CACREATESERIAL, '-',
"Create CA serial number file if it does not exist"},
OPT_SECTION("Certificate trust output"),
{"trustout", OPT_TRUSTOUT, '-', "Mark certificate PEM output as trusted"},
{"setalias", OPT_SETALIAS, 's', "Set certificate alias (nickname)"},
{"clrtrust", OPT_CLRTRUST, '-', "Clear all trusted purposes"},
{"addtrust", OPT_ADDTRUST, 's', "Trust certificate for a given purpose"},
{"clrreject", OPT_CLRREJECT, '-',
"Clears all the prohibited or rejected uses of the certificate"},
{"addreject", OPT_ADDREJECT, 's',
"Reject certificate for a given purpose"},
OPT_R_OPTIONS,
#ifndef OPENSSL_NO_ENGINE
{"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
#endif
OPT_PROV_OPTIONS,
{NULL}
};
static void warn_copying(ASN1_OBJECT *excluded, const char *names)
{
const char *sn = OBJ_nid2sn(OBJ_obj2nid(excluded));
if (names != NULL && strstr(names, sn) != NULL)
BIO_printf(bio_err,
"Warning: -ext should not specify copying %s extension to CSR; ignoring this\n",
sn);
}
static X509_REQ *x509_to_req(X509 *cert, int ext_copy, const char *names)
{
const STACK_OF(X509_EXTENSION) *cert_exts = X509_get0_extensions(cert);
int i, n = sk_X509_EXTENSION_num(cert_exts /* may be NULL */);
ASN1_OBJECT *skid = OBJ_nid2obj(NID_subject_key_identifier);
ASN1_OBJECT *akid = OBJ_nid2obj(NID_authority_key_identifier);
STACK_OF(X509_EXTENSION) *exts;
X509_REQ *req = X509_to_X509_REQ(cert, NULL, NULL);
if (req == NULL)
return NULL;
/*
* Filter out SKID and AKID extensions, which make no sense in a CSR.
* If names is not NULL, copy only those extensions listed there.
*/
warn_copying(skid, names);
warn_copying(akid, names);
if ((exts = sk_X509_EXTENSION_new_reserve(NULL, n)) == NULL)
goto err;
for (i = 0; i < n; i++) {
X509_EXTENSION *ex = sk_X509_EXTENSION_value(cert_exts, i);
ASN1_OBJECT *obj = X509_EXTENSION_get_object(ex);
if (OBJ_cmp(obj, skid) != 0 && OBJ_cmp(obj, akid) != 0
&& !sk_X509_EXTENSION_push(exts, ex))
goto err;
}
if (sk_X509_EXTENSION_num(exts) > 0) {
if (ext_copy != EXT_COPY_UNSET && ext_copy != EXT_COPY_NONE
&& !X509_REQ_add_extensions(req, exts)) {
BIO_printf(bio_err, "Error copying extensions from certificate\n");
goto err;
}
}
sk_X509_EXTENSION_free(exts);
return req;
err:
sk_X509_EXTENSION_free(exts);
X509_REQ_free(req);
return NULL;
}
static int self_signed(X509_STORE *ctx, X509 *cert)
{
X509_STORE_CTX *xsc = X509_STORE_CTX_new();
int ret = 0;
if (xsc == NULL || !X509_STORE_CTX_init(xsc, ctx, cert, NULL)) {
BIO_printf(bio_err, "Error initialising X509 store\n");
} else {
X509_STORE_CTX_set_flags(xsc, X509_V_FLAG_CHECK_SS_SIGNATURE);
ret = X509_verify_cert(xsc) > 0;
}
X509_STORE_CTX_free(xsc);
return ret;
}
int x509_main(int argc, char **argv)
{
ASN1_INTEGER *sno = NULL;
ASN1_OBJECT *objtmp = NULL;
BIO *out = NULL;
CONF *extconf = NULL;
int ext_copy = EXT_COPY_UNSET;
X509V3_CTX ext_ctx;
EVP_PKEY *privkey = NULL, *CAkey = NULL, *pubkey = NULL;
EVP_PKEY *pkey;
int newcert = 0;
char *subj = NULL, *digest = NULL;
X509_NAME *fsubj = NULL;
const unsigned long chtype = MBSTRING_ASC;
const int multirdn = 1;
STACK_OF(ASN1_OBJECT) *trust = NULL, *reject = NULL;
STACK_OF(OPENSSL_STRING) *sigopts = NULL, *vfyopts = NULL;
X509 *x = NULL, *xca = NULL, *issuer_cert;
X509_REQ *req = NULL, *rq = NULL;
X509_STORE *ctx = NULL;
char *CAkeyfile = NULL, *CAserial = NULL, *pubkeyfile = NULL, *alias = NULL;
char *checkhost = NULL, *checkemail = NULL, *checkip = NULL;
char *ext_names = NULL;
char *extsect = NULL, *extfile = NULL, *passin = NULL, *passinarg = NULL;
char *infile = NULL, *outfile = NULL, *privkeyfile = NULL, *CAfile = NULL;
char *prog;
int days = UNSET_DAYS; /* not explicitly set */
int x509toreq = 0, modulus = 0, print_pubkey = 0, pprint = 0;
int CAformat = FORMAT_UNDEF, CAkeyformat = FORMAT_UNDEF;
unsigned long dateopt = ASN1_DTFLGS_RFC822;
int fingerprint = 0, reqfile = 0, checkend = 0;
int informat = FORMAT_UNDEF, outformat = FORMAT_PEM, keyformat = FORMAT_UNDEF;
int next_serial = 0, subject_hash = 0, issuer_hash = 0, ocspid = 0;
int noout = 0, CA_createserial = 0, email = 0;
int ocsp_uri = 0, trustout = 0, clrtrust = 0, clrreject = 0, aliasout = 0;
int ret = 1, i, j, num = 0, badsig = 0, clrext = 0, nocert = 0;
int text = 0, serial = 0, subject = 0, issuer = 0, startdate = 0, ext = 0;
int enddate = 0;
time_t checkoffset = 0;
unsigned long certflag = 0;
int preserve_dates = 0;
OPTION_CHOICE o;
ENGINE *e = NULL;
#ifndef OPENSSL_NO_MD5
int subject_hash_old = 0, issuer_hash_old = 0;
#endif
ctx = X509_STORE_new();
if (ctx == NULL)
goto err;
X509_STORE_set_verify_cb(ctx, callb);
opt_set_unknown_name("digest");
prog = opt_init(argc, argv, x509_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 err;
case OPT_HELP:
opt_help(x509_options);
ret = 0;
goto end;
case OPT_INFORM:
if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &informat))
goto opthelp;
break;
case OPT_IN:
infile = opt_arg();
break;
case OPT_OUTFORM:
if (!opt_format(opt_arg(), OPT_FMT_ANY, &outformat))
goto opthelp;
break;
case OPT_KEYFORM:
if (!opt_format(opt_arg(), OPT_FMT_ANY, &keyformat))
goto opthelp;
break;
case OPT_CAFORM:
if (!opt_format(opt_arg(), OPT_FMT_ANY, &CAformat))
goto opthelp;
break;
case OPT_CAKEYFORM:
if (!opt_format(opt_arg(), OPT_FMT_ANY, &CAkeyformat))
goto opthelp;
break;
case OPT_OUT:
outfile = opt_arg();
break;
case OPT_REQ:
reqfile = 1;
break;
case OPT_DATEOPT:
if (!set_dateopt(&dateopt, opt_arg())) {
BIO_printf(bio_err,
"Invalid date format: %s\n", opt_arg());
goto err;
}
break;
case OPT_COPY_EXTENSIONS:
if (!set_ext_copy(&ext_copy, opt_arg())) {
BIO_printf(bio_err,
"Invalid extension copy option: %s\n", opt_arg());
goto err;
}
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_VFYOPT:
if (!vfyopts)
vfyopts = sk_OPENSSL_STRING_new_null();
if (!vfyopts || !sk_OPENSSL_STRING_push(vfyopts, opt_arg()))
goto opthelp;
break;
case OPT_DAYS:
days = atoi(opt_arg());
if (days < -1) {
BIO_printf(bio_err, "%s: -days parameter arg must be >= -1\n",
prog);
goto err;
}
break;
case OPT_PASSIN:
passinarg = opt_arg();
break;
case OPT_EXTFILE:
extfile = opt_arg();
break;
case OPT_R_CASES:
if (!opt_rand(o))
goto end;
break;
case OPT_PROV_CASES:
if (!opt_provider(o))
goto end;
break;
case OPT_EXTENSIONS:
extsect = opt_arg();
break;
case OPT_KEY:
case OPT_SIGNKEY:
privkeyfile = opt_arg();
break;
case OPT_CA:
CAfile = opt_arg();
break;
case OPT_CAKEY:
CAkeyfile = opt_arg();
break;
case OPT_CASERIAL:
CAserial = opt_arg();
break;
case OPT_SET_SERIAL:
if (sno != NULL) {
BIO_printf(bio_err, "Serial number supplied twice\n");
goto opthelp;
}
if ((sno = s2i_ASN1_INTEGER(NULL, opt_arg())) == NULL)
goto opthelp;
break;
case OPT_NEW:
newcert = 1;
break;
case OPT_FORCE_PUBKEY:
pubkeyfile = opt_arg();
break;
case OPT_SUBJ:
subj = opt_arg();
break;
case OPT_ADDTRUST:
if (trust == NULL && (trust = sk_ASN1_OBJECT_new_null()) == NULL)
goto end;
if ((objtmp = OBJ_txt2obj(opt_arg(), 0)) == NULL) {
BIO_printf(bio_err, "%s: Invalid trust object value %s\n",
prog, opt_arg());
goto opthelp;
}
sk_ASN1_OBJECT_push(trust, objtmp);
trustout = 1;
break;
case OPT_ADDREJECT:
if (reject == NULL && (reject = sk_ASN1_OBJECT_new_null()) == NULL)
goto end;
if ((objtmp = OBJ_txt2obj(opt_arg(), 0)) == NULL) {
BIO_printf(bio_err, "%s: Invalid reject object value %s\n",
prog, opt_arg());
goto opthelp;
}
sk_ASN1_OBJECT_push(reject, objtmp);
trustout = 1;
break;
case OPT_SETALIAS:
alias = opt_arg();
trustout = 1;
break;
case OPT_CERTOPT:
if (!set_cert_ex(&certflag, opt_arg()))
goto opthelp;
break;
case OPT_NAMEOPT:
if (!set_nameopt(opt_arg()))
goto opthelp;
break;
case OPT_ENGINE:
e = setup_engine(opt_arg(), 0);
break;
case OPT_EMAIL:
email = ++num;
break;
case OPT_OCSP_URI:
ocsp_uri = ++num;
break;
case OPT_SERIAL:
serial = ++num;
break;
case OPT_NEXT_SERIAL:
next_serial = ++num;
break;
case OPT_MODULUS:
modulus = ++num;
break;
case OPT_PUBKEY:
print_pubkey = ++num;
break;
case OPT_X509TOREQ:
x509toreq = 1;
break;
case OPT_TEXT:
text = ++num;
break;
case OPT_SUBJECT:
subject = ++num;
break;
case OPT_ISSUER:
issuer = ++num;
break;
case OPT_FINGERPRINT:
fingerprint = ++num;
break;
case OPT_HASH:
subject_hash = ++num;
break;
case OPT_ISSUER_HASH:
issuer_hash = ++num;
break;
case OPT_PURPOSE:
pprint = ++num;
break;
case OPT_STARTDATE:
startdate = ++num;
break;
case OPT_ENDDATE:
enddate = ++num;
break;
case OPT_NOOUT:
noout = ++num;
break;
case OPT_EXT:
ext = ++num;
ext_names = opt_arg();
break;
case OPT_NOCERT:
nocert = 1;
break;
case OPT_TRUSTOUT:
trustout = 1;
break;
case OPT_CLRTRUST:
clrtrust = ++num;
break;
case OPT_CLRREJECT:
clrreject = ++num;
break;
case OPT_ALIAS:
aliasout = ++num;
break;
case OPT_CACREATESERIAL:
CA_createserial = 1;
break;
case OPT_CLREXT:
clrext = 1;
break;
case OPT_OCSPID:
ocspid = ++num;
break;
case OPT_BADSIG:
badsig = 1;
break;
#ifndef OPENSSL_NO_MD5
case OPT_SUBJECT_HASH_OLD:
subject_hash_old = ++num;
break;
case OPT_ISSUER_HASH_OLD:
issuer_hash_old = ++num;
break;
#else
case OPT_SUBJECT_HASH_OLD:
case OPT_ISSUER_HASH_OLD:
break;
#endif
case OPT_DATES:
startdate = ++num;
enddate = ++num;
break;
case OPT_CHECKEND:
checkend = 1;
{
ossl_intmax_t temp = 0;
if (!opt_intmax(opt_arg(), &temp))
goto opthelp;
checkoffset = (time_t)temp;
if ((ossl_intmax_t)checkoffset != temp) {
BIO_printf(bio_err, "%s: Checkend time out of range %s\n",
prog, opt_arg());
goto opthelp;
}
}
break;
case OPT_CHECKHOST:
checkhost = opt_arg();
break;
case OPT_CHECKEMAIL:
checkemail = opt_arg();
break;
case OPT_CHECKIP:
checkip = opt_arg();
break;
case OPT_PRESERVE_DATES:
preserve_dates = 1;
break;
case OPT_MD:
digest = opt_unknown();
break;
}
}
/* No extra arguments. */
if (!opt_check_rest_arg(NULL))
goto opthelp;
if (!app_RAND_load())
goto end;
if (!opt_check_md(digest))
goto opthelp;
if (preserve_dates && days != UNSET_DAYS) {
BIO_printf(bio_err, "Cannot use -preserve_dates with -days option\n");
goto err;
}
if (days == UNSET_DAYS)
days = DEFAULT_DAYS;
if (!app_passwd(passinarg, NULL, &passin, NULL)) {
BIO_printf(bio_err, "Error getting password\n");
goto err;
}
if (!X509_STORE_set_default_paths_ex(ctx, app_get0_libctx(),
app_get0_propq()))
goto end;
if (newcert && infile != NULL) {
BIO_printf(bio_err, "The -in option cannot be used with -new\n");
goto err;
}
if (newcert && reqfile) {
BIO_printf(bio_err, "The -req option cannot be used with -new\n");
goto err;
}
if (privkeyfile != NULL) {
privkey = load_key(privkeyfile, keyformat, 0, passin, e, "private key");
if (privkey == NULL)
goto end;
}
if (pubkeyfile != NULL) {
if ((pubkey = load_pubkey(pubkeyfile, keyformat, 0, NULL, e,
"explicitly set public key")) == NULL)
goto end;
}
if (newcert) {
if (subj == NULL) {
BIO_printf(bio_err,
"The -new option requires a subject to be set using -subj\n");
goto err;
}
if (privkeyfile == NULL && pubkeyfile == NULL) {
BIO_printf(bio_err,
"The -new option requires using the -key or -force_pubkey option\n");
goto err;
}
}
if (subj != NULL
&& (fsubj = parse_name(subj, chtype, multirdn, "subject")) == NULL)
goto end;
if (CAkeyfile == NULL)
CAkeyfile = CAfile;
if (CAfile != NULL) {
if (privkeyfile != NULL) {
BIO_printf(bio_err, "Cannot use both -key/-signkey and -CA option\n");
goto err;
}
} else {
#define WARN_NO_CA(opt) BIO_printf(bio_err, \
"Warning: ignoring " opt " option since -CA option is not given\n");
if (CAkeyfile != NULL)
WARN_NO_CA("-CAkey");
if (CAkeyformat != FORMAT_UNDEF)
WARN_NO_CA("-CAkeyform");
if (CAformat != FORMAT_UNDEF)
WARN_NO_CA("-CAform");
if (CAserial != NULL)
WARN_NO_CA("-CAserial");
if (CA_createserial)
WARN_NO_CA("-CAcreateserial");
}
if (extfile == NULL) {
if (extsect != NULL)
BIO_printf(bio_err,
"Warning: ignoring -extensions option without -extfile\n");
} else {
X509V3_CTX ctx2;
if ((extconf = app_load_config(extfile)) == NULL)
goto end;
if (extsect == NULL) {
extsect = app_conf_try_string(extconf, "default", "extensions");
if (extsect == NULL)
extsect = "default";
}
X509V3_set_ctx_test(&ctx2);
X509V3_set_nconf(&ctx2, extconf);
if (!X509V3_EXT_add_nconf(extconf, &ctx2, extsect, NULL)) {
BIO_printf(bio_err,
"Error checking extension section %s\n", extsect);
goto err;
}
}
if (reqfile) {
if (infile == NULL)
BIO_printf(bio_err,
"Warning: Reading cert request from stdin since no -in option is given\n");
req = load_csr_autofmt(infile, informat, vfyopts,
"certificate request input");
if (req == NULL)
goto end;
if ((pkey = X509_REQ_get0_pubkey(req)) == NULL) {
BIO_printf(bio_err, "Error unpacking public key from CSR\n");
goto err;
}
i = do_X509_REQ_verify(req, pkey, vfyopts);
if (i <= 0) {
BIO_printf(bio_err, i < 0
? "Error while verifying certificate request self-signature\n"
: "Certificate request self-signature did not match the contents\n");
goto err;
}
BIO_printf(bio_err, "Certificate request self-signature ok\n");
print_name(bio_err, "subject=", X509_REQ_get_subject_name(req));
} else if (!x509toreq && ext_copy != EXT_COPY_UNSET) {
BIO_printf(bio_err, "Warning: ignoring -copy_extensions since neither -x509toreq nor -req is given\n");
}
if (reqfile || newcert) {
if (preserve_dates)
BIO_printf(bio_err,
"Warning: ignoring -preserve_dates option with -req or -new\n");
preserve_dates = 0;
if (privkeyfile == NULL && CAkeyfile == NULL) {
BIO_printf(bio_err,
"We need a private key to sign with, use -key or -CAkey or -CA with private key\n");
goto err;
}
if ((x = X509_new_ex(app_get0_libctx(), app_get0_propq())) == NULL)
goto end;
if (CAfile == NULL && sno == NULL) {
sno = ASN1_INTEGER_new();
if (sno == NULL || !rand_serial(NULL, sno))
goto end;
}
if (req != NULL && ext_copy != EXT_COPY_UNSET) {
if (clrext && ext_copy != EXT_COPY_NONE) {
BIO_printf(bio_err, "Must not use -clrext together with -copy_extensions\n");
goto err;
} else if (!copy_extensions(x, req, ext_copy)) {
BIO_printf(bio_err, "Error copying extensions from request\n");
goto err;
}
}
} else {
if (infile == NULL)
BIO_printf(bio_err,
"Warning: Reading certificate from stdin since no -in or -new option is given\n");
x = load_cert_pass(infile, informat, 1, passin, "certificate");
if (x == NULL)
goto end;
}
if ((fsubj != NULL || req != NULL)
&& !X509_set_subject_name(x, fsubj != NULL ? fsubj :
X509_REQ_get_subject_name(req)))
goto end;
if ((pubkey != NULL || privkey != NULL || req != NULL)
&& !X509_set_pubkey(x, pubkey != NULL ? pubkey :
privkey != NULL ? privkey :
X509_REQ_get0_pubkey(req)))
goto end;
if (CAfile != NULL) {
xca = load_cert_pass(CAfile, CAformat, 1, passin, "CA certificate");
if (xca == NULL)
goto end;
}
out = bio_open_default(outfile, 'w', outformat);
if (out == NULL)
goto end;
if (alias)
X509_alias_set1(x, (unsigned char *)alias, -1);
if (clrtrust)
X509_trust_clear(x);
if (clrreject)
X509_reject_clear(x);
if (trust != NULL) {
for (i = 0; i < sk_ASN1_OBJECT_num(trust); i++)
X509_add1_trust_object(x, sk_ASN1_OBJECT_value(trust, i));
}
if (reject != NULL) {
for (i = 0; i < sk_ASN1_OBJECT_num(reject); i++)
X509_add1_reject_object(x, sk_ASN1_OBJECT_value(reject, i));
}
if (clrext && ext_names != NULL)
BIO_printf(bio_err, "Warning: Ignoring -ext since -clrext is given\n");
for (i = X509_get_ext_count(x) - 1; i >= 0; i--) {
X509_EXTENSION *ex = X509_get_ext(x, i);
const char *sn = OBJ_nid2sn(OBJ_obj2nid(X509_EXTENSION_get_object(ex)));
if (clrext || (ext_names != NULL && strstr(ext_names, sn) == NULL))
X509_EXTENSION_free(X509_delete_ext(x, i));
}
issuer_cert = x;
if (CAfile != NULL) {
issuer_cert = xca;
if (sno == NULL)
sno = x509_load_serial(CAfile, CAserial, CA_createserial);
if (sno == NULL)
goto end;
if (!x509toreq && !reqfile && !newcert && !self_signed(ctx, x))
goto end;
} else {
if (privkey != NULL && !cert_matches_key(x, privkey))
BIO_printf(bio_err,
"Warning: Signature key and public key of cert do not match\n");
}
if (sno != NULL && !X509_set_serialNumber(x, sno))
goto end;
if (reqfile || newcert || privkey != NULL || CAfile != NULL) {
if (!preserve_dates && !set_cert_times(x, NULL, NULL, days))
goto end;
if (!X509_set_issuer_name(x, X509_get_subject_name(issuer_cert)))
goto end;
}
X509V3_set_ctx(&ext_ctx, issuer_cert, x, NULL, NULL, X509V3_CTX_REPLACE);
/* prepare fallback for AKID, but only if issuer cert equals subject cert */
if (CAfile == NULL) {
if (!X509V3_set_issuer_pkey(&ext_ctx, privkey))
goto end;
}
if (extconf != NULL && !x509toreq) {
X509V3_set_nconf(&ext_ctx, extconf);
if (!X509V3_EXT_add_nconf(extconf, &ext_ctx, extsect, x)) {
BIO_printf(bio_err,
"Error adding extensions from section %s\n", extsect);
goto err;
}
}
/* At this point the contents of the certificate x have been finished. */
pkey = X509_get0_pubkey(x);
if ((print_pubkey != 0 || modulus != 0) && pkey == NULL) {
BIO_printf(bio_err, "Error getting public key\n");
goto err;
}
if (x509toreq) { /* also works in conjunction with -req */
if (privkey == NULL) {
BIO_printf(bio_err, "Must specify request signing key using -key\n");
goto err;
}
if (clrext && ext_copy != EXT_COPY_NONE) {
BIO_printf(bio_err, "Must not use -clrext together with -copy_extensions\n");
goto err;
}
if ((rq = x509_to_req(x, ext_copy, ext_names)) == NULL)
goto end;
if (extconf != NULL) {
X509V3_set_nconf(&ext_ctx, extconf);
if (!X509V3_EXT_REQ_add_nconf(extconf, &ext_ctx, extsect, rq)) {
BIO_printf(bio_err,
"Error adding request extensions from section %s\n", extsect);
goto err;
}
}
if (!do_X509_REQ_sign(rq, privkey, digest, sigopts))
goto end;
if (!noout) {
if (outformat == FORMAT_ASN1) {
X509_REQ_print_ex(out, rq, get_nameopt(), X509_FLAG_COMPAT);
i = i2d_X509_bio(out, x);
} else {
i = PEM_write_bio_X509_REQ(out, rq);
}
if (!i) {
BIO_printf(bio_err,
"Unable to write certificate request\n");
goto err;
}
}
noout = 1;
} else if (CAfile != NULL) {
if ((CAkey = load_key(CAkeyfile, CAkeyformat,
0, passin, e, "CA private key")) == NULL)
goto end;
if (!X509_check_private_key(xca, CAkey)) {
BIO_printf(bio_err,
"CA certificate and CA private key do not match\n");
goto err;
}
if (!do_X509_sign(x, 0, CAkey, digest, sigopts, &ext_ctx))
goto end;
} else if (privkey != NULL) {
if (!do_X509_sign(x, 0, privkey, digest, sigopts, &ext_ctx))
goto end;
}
if (badsig) {
const ASN1_BIT_STRING *signature;
X509_get0_signature(&signature, NULL, x);
corrupt_signature(signature);
}
/* Process print options in the given order, as indicated by index i */
for (i = 1; i <= num; i++) {
if (i == issuer) {
print_name(out, "issuer=", X509_get_issuer_name(x));
} else if (i == subject) {
print_name(out, "subject=", X509_get_subject_name(x));
} else if (i == serial) {
BIO_printf(out, "serial=");
i2a_ASN1_INTEGER(out, X509_get0_serialNumber(x));
BIO_printf(out, "\n");
} else if (i == next_serial) {
ASN1_INTEGER *ser;
BIGNUM *bnser = ASN1_INTEGER_to_BN(X509_get0_serialNumber(x), NULL);
if (bnser == NULL)
goto end;
if (!BN_add_word(bnser, 1)
|| (ser = BN_to_ASN1_INTEGER(bnser, NULL)) == NULL) {
BN_free(bnser);
goto end;
}
BN_free(bnser);
i2a_ASN1_INTEGER(out, ser);
ASN1_INTEGER_free(ser);
BIO_puts(out, "\n");
} else if (i == email || i == ocsp_uri) {
STACK_OF(OPENSSL_STRING) *emlst =
i == email ? X509_get1_email(x) : X509_get1_ocsp(x);
for (j = 0; j < sk_OPENSSL_STRING_num(emlst); j++)
BIO_printf(out, "%s\n", sk_OPENSSL_STRING_value(emlst, j));
X509_email_free(emlst);
} else if (i == aliasout) {
unsigned char *alstr = X509_alias_get0(x, NULL);
if (alstr)
BIO_printf(out, "%s\n", alstr);
else
BIO_puts(out, "<No Alias>\n");
} else if (i == subject_hash) {
BIO_printf(out, "%08lx\n", X509_subject_name_hash(x));
#ifndef OPENSSL_NO_MD5
} else if (i == subject_hash_old) {
BIO_printf(out, "%08lx\n", X509_subject_name_hash_old(x));
#endif
} else if (i == issuer_hash) {
BIO_printf(out, "%08lx\n", X509_issuer_name_hash(x));
#ifndef OPENSSL_NO_MD5
} else if (i == issuer_hash_old) {
BIO_printf(out, "%08lx\n", X509_issuer_name_hash_old(x));
#endif
} else if (i == pprint) {
BIO_printf(out, "Certificate purposes:\n");
for (j = 0; j < X509_PURPOSE_get_count(); j++)
purpose_print(out, x, X509_PURPOSE_get0(j));
} else if (i == modulus) {
BIO_printf(out, "Modulus=");
if (EVP_PKEY_is_a(pkey, "RSA") || EVP_PKEY_is_a(pkey, "RSA-PSS")) {
BIGNUM *n = NULL;
/* Every RSA key has an 'n' */
EVP_PKEY_get_bn_param(pkey, "n", &n);
BN_print(out, n);
BN_free(n);
} else if (EVP_PKEY_is_a(pkey, "DSA")) {
BIGNUM *dsapub = NULL;
/* Every DSA key has a 'pub' */
EVP_PKEY_get_bn_param(pkey, "pub", &dsapub);
BN_print(out, dsapub);
BN_free(dsapub);
} else {
BIO_printf(out, "No modulus for this public key type");
}
BIO_printf(out, "\n");
} else if (i == print_pubkey) {
PEM_write_bio_PUBKEY(out, pkey);
} else if (i == text) {
X509_print_ex(out, x, get_nameopt(), certflag);
} else if (i == startdate) {
BIO_puts(out, "notBefore=");
ASN1_TIME_print_ex(out, X509_get0_notBefore(x), dateopt);
BIO_puts(out, "\n");
} else if (i == enddate) {
BIO_puts(out, "notAfter=");
ASN1_TIME_print_ex(out, X509_get0_notAfter(x), dateopt);
BIO_puts(out, "\n");
} else if (i == fingerprint) {
unsigned int n;
unsigned char md[EVP_MAX_MD_SIZE];
const char *fdigname = digest;
EVP_MD *fdig;
int digres;
if (fdigname == NULL)
fdigname = "SHA1";
if ((fdig = EVP_MD_fetch(app_get0_libctx(), fdigname,
app_get0_propq())) == NULL) {
BIO_printf(bio_err, "Unknown digest\n");
goto err;
}
digres = X509_digest(x, fdig, md, &n);
EVP_MD_free(fdig);
if (!digres) {
BIO_printf(bio_err, "Out of memory\n");
goto err;
}
BIO_printf(out, "%s Fingerprint=", fdigname);
for (j = 0; j < (int)n; j++)
BIO_printf(out, "%02X%c", md[j], (j + 1 == (int)n) ? '\n' : ':');
} else if (i == ocspid) {
X509_ocspid_print(out, x);
} else if (i == ext) {
print_x509v3_exts(out, x, ext_names);
}
}
if (checkend) {
time_t tcheck = time(NULL) + checkoffset;
ret = X509_cmp_time(X509_get0_notAfter(x), &tcheck) < 0;
if (ret)
BIO_printf(out, "Certificate will expire\n");
else
BIO_printf(out, "Certificate will not expire\n");
goto end;
}
if (!check_cert_attributes(out, x, checkhost, checkemail, checkip, 1))
goto err;
if (noout || nocert) {
ret = 0;
goto end;
}
if (outformat == FORMAT_ASN1) {
i = i2d_X509_bio(out, x);
} else if (outformat == FORMAT_PEM) {
if (trustout)
i = PEM_write_bio_X509_AUX(out, x);
else
i = PEM_write_bio_X509(out, x);
} else {
BIO_printf(bio_err, "Bad output format specified for outfile\n");
goto err;
}
if (!i) {
BIO_printf(bio_err, "Unable to write certificate\n");
goto err;
}
ret = 0;
goto end;
err:
ERR_print_errors(bio_err);
end:
NCONF_free(extconf);
BIO_free_all(out);
X509_STORE_free(ctx);
X509_NAME_free(fsubj);
X509_REQ_free(req);
X509_free(x);
X509_free(xca);
EVP_PKEY_free(privkey);
EVP_PKEY_free(CAkey);
EVP_PKEY_free(pubkey);
sk_OPENSSL_STRING_free(sigopts);
sk_OPENSSL_STRING_free(vfyopts);
X509_REQ_free(rq);
ASN1_INTEGER_free(sno);
sk_ASN1_OBJECT_pop_free(trust, ASN1_OBJECT_free);
sk_ASN1_OBJECT_pop_free(reject, ASN1_OBJECT_free);
release_engine(e);
clear_free(passin);
return ret;
}
static ASN1_INTEGER *x509_load_serial(const char *CAfile,
const char *serialfile, int create)
{
char *buf = NULL;
ASN1_INTEGER *bs = NULL;
BIGNUM *serial = NULL;
int defaultfile = 0, file_exists;
if (serialfile == NULL) {
const char *p = strrchr(CAfile, '.');
size_t len = p != NULL ? (size_t)(p - CAfile) : strlen(CAfile);
buf = app_malloc(len + sizeof(POSTFIX), "serial# buffer");
memcpy(buf, CAfile, len);
memcpy(buf + len, POSTFIX, sizeof(POSTFIX));
serialfile = buf;
defaultfile = 1;
}
serial = load_serial(serialfile, &file_exists, create || defaultfile, NULL);
if (serial == NULL)
goto end;
if (!BN_add_word(serial, 1)) {
BIO_printf(bio_err, "Serial number increment failure\n");
goto end;
}
if (file_exists || create)
save_serial(serialfile, NULL, serial, &bs);
else
bs = BN_to_ASN1_INTEGER(serial, NULL);
end:
OPENSSL_free(buf);
BN_free(serial);
return bs;
}
static int callb(int ok, X509_STORE_CTX *ctx)
{
int err;
X509 *err_cert;
/*
* It is ok to use a self-signed certificate. This case will catch both
* the initial ok == 0 and the final ok == 1 calls to this function.
*/
err = X509_STORE_CTX_get_error(ctx);
if (err == X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT)
return 1;
if (!ok) {
err_cert = X509_STORE_CTX_get_current_cert(ctx);
print_name(bio_err, "subject=", X509_get_subject_name(err_cert));
BIO_printf(bio_err,
"Error with certificate - error %d at depth %d\n%s\n", err,
X509_STORE_CTX_get_error_depth(ctx),
X509_verify_cert_error_string(err));
return 1;
}
return 1;
}
static int purpose_print(BIO *bio, X509 *cert, X509_PURPOSE *pt)
{
int id, i, idret;
const char *pname;
id = X509_PURPOSE_get_id(pt);
pname = X509_PURPOSE_get0_name(pt);
for (i = 0; i < 2; i++) {
idret = X509_check_purpose(cert, id, i);
BIO_printf(bio, "%s%s : ", pname, i ? " CA" : "");
if (idret == 1)
BIO_printf(bio, "Yes\n");
else if (idret == 0)
BIO_printf(bio, "No\n");
else
BIO_printf(bio, "Yes (WARNING code=%d)\n", idret);
}
return 1;
}
static int parse_ext_names(char *names, const char **result)
{
char *p, *q;
int cnt = 0, len = 0;
p = q = names;
len = strlen(names);
while (q - names <= len) {
if (*q != ',' && *q != '\0') {
q++;
continue;
}
if (p != q) {
/* found */
if (result != NULL) {
result[cnt] = p;
*q = '\0';
}
cnt++;
}
p = ++q;
}
return cnt;
}
static int print_x509v3_exts(BIO *bio, X509 *x, const char *ext_names)
{
const STACK_OF(X509_EXTENSION) *exts = NULL;
STACK_OF(X509_EXTENSION) *exts2 = NULL;
X509_EXTENSION *ext = NULL;
ASN1_OBJECT *obj;
int i, j, ret = 0, num, nn = 0;
const char *sn, **names = NULL;
char *tmp_ext_names = NULL;
exts = X509_get0_extensions(x);
if ((num = sk_X509_EXTENSION_num(exts)) <= 0) {
BIO_printf(bio_err, "No extensions in certificate\n");
ret = 1;
goto end;
}
/* parse comma separated ext name string */
if ((tmp_ext_names = OPENSSL_strdup(ext_names)) == NULL)
goto end;
if ((nn = parse_ext_names(tmp_ext_names, NULL)) == 0) {
BIO_printf(bio, "Invalid extension names: %s\n", ext_names);
goto end;
}
if ((names = OPENSSL_malloc(sizeof(char *) * nn)) == NULL)
goto end;
parse_ext_names(tmp_ext_names, names);
for (i = 0; i < num; i++) {
ext = sk_X509_EXTENSION_value(exts, i);
/* check if this ext is what we want */
obj = X509_EXTENSION_get_object(ext);
sn = OBJ_nid2sn(OBJ_obj2nid(obj));
if (sn == NULL || strcmp(sn, "UNDEF") == 0)
continue;
for (j = 0; j < nn; j++) {
if (strcmp(sn, names[j]) == 0) {
/* push the extension into a new stack */
if (exts2 == NULL
&& (exts2 = sk_X509_EXTENSION_new_null()) == NULL)
goto end;
if (!sk_X509_EXTENSION_push(exts2, ext))
goto end;
}
}
}
if (!sk_X509_EXTENSION_num(exts2)) {
BIO_printf(bio, "No extensions matched with %s\n", ext_names);
ret = 1;
goto end;
}
ret = X509V3_extensions_print(bio, NULL, exts2, 0, 0);
end:
sk_X509_EXTENSION_free(exts2);
OPENSSL_free(names);
OPENSSL_free(tmp_ext_names);
return ret;
}
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