/* self sign */
static int sign(X509 *x, EVP_PKEY *pkey, int days, int clrext, const EVP_MD *digest,
CONF *conf, char *section)
{
EVP_PKEY *pktmp;
pktmp = X509_get_pubkey(x);
EVP_PKEY_copy_parameters(pktmp,pkey);
EVP_PKEY_save_parameters(pktmp,1);
EVP_PKEY_free(pktmp);
if (!X509_set_issuer_name(x,X509_get_subject_name(x))) goto err;
if (X509_gmtime_adj(X509_get_notBefore(x),0) == NULL) goto err;
/* Lets just make it 12:00am GMT, Jan 1 1970 */
/* memcpy(x->cert_info->validity->notBefore,"700101120000Z",13); */
/* 28 days to be certified */
if (X509_gmtime_adj(X509_get_notAfter(x),(long)60*60*24*days) == NULL)
goto err;
if (!X509_set_pubkey(x,pkey)) goto err;
if (clrext)
{
while (X509_get_ext_count(x) > 0) X509_delete_ext(x, 0);
}
if (conf)
{
X509V3_CTX ctx;
X509_set_version(x,2); /* version 3 certificate */
X509V3_set_ctx(&ctx, x, x, NULL, NULL, 0);
X509V3_set_nconf(&ctx, conf);
if (!X509V3_EXT_add_nconf(conf, &ctx, section, x)) goto err;
}
if (!X509_sign(x,pkey,digest)) goto err;
return 1;
err:
ERR_print_errors(bio_err);
return 0;
}
int add_ext( X509 *issuer, X509 *subj, int nid, const char* value ) {
X509V3_CTX ctx;
X509V3_set_ctx( &ctx, issuer, subj, NULL, NULL, 0 );
X509_EXTENSION *ex = X509V3_EXT_conf_nid( NULL, &ctx, nid, (char *) value );
if( !ex ) {
return 0;
}
// removing old extensions of the same type
int loc = -1;
while( ( loc = X509_get_ext_by_NID(subj, nid, loc) ) != -1 ){
printf("Removing old extension number %d\n", loc);
X509_EXTENSION *old = X509_delete_ext(subj, loc);
X509_EXTENSION_free(old);
}
// adding the new extension
X509_add_ext( subj, ex, -1 );
X509_EXTENSION_free( ex );
return 1;
}
static int x509_certify(X509_STORE *ctx, char *CAfile, const EVP_MD *digest,
X509 *x, X509 *xca, EVP_PKEY *pkey, char *serialfile, int create,
int days, int clrext, CONF *conf, char *section, ASN1_INTEGER *sno)
{
int ret=0;
ASN1_INTEGER *bs=NULL;
X509_STORE_CTX xsc;
EVP_PKEY *upkey;
upkey = X509_get_pubkey(xca);
EVP_PKEY_copy_parameters(upkey,pkey);
EVP_PKEY_free(upkey);
if(!X509_STORE_CTX_init(&xsc,ctx,x,NULL))
{
BIO_printf(bio_err,"Error initialising X509 store\n");
goto end;
}
if (sno) bs = sno;
else if (!(bs = load_serial(CAfile, serialfile, create)))
goto end;
if (!X509_STORE_add_cert(ctx,x)) goto end;
/* NOTE: this certificate can/should be self signed, unless it was
* a certificate request in which case it is not. */
X509_STORE_CTX_set_cert(&xsc,x);
if (!reqfile && !X509_verify_cert(&xsc))
goto end;
if (!X509_check_private_key(xca,pkey))
{
BIO_printf(bio_err,"CA certificate and CA private key do not match\n");
goto end;
}
if (!X509_set_issuer_name(x,X509_get_subject_name(xca))) goto end;
if (!X509_set_serialNumber(x,bs)) goto end;
if (X509_gmtime_adj(X509_get_notBefore(x),0L) == NULL)
goto end;
/* hardwired expired */
if (X509_gmtime_adj(X509_get_notAfter(x),(long)60*60*24*days) == NULL)
goto end;
if (clrext)
{
while (X509_get_ext_count(x) > 0) X509_delete_ext(x, 0);
}
if (conf)
{
X509V3_CTX ctx2;
X509_set_version(x,2); /* version 3 certificate */
X509V3_set_ctx(&ctx2, xca, x, NULL, NULL, 0);
X509V3_set_nconf(&ctx2, conf);
if (!X509V3_EXT_add_nconf(conf, &ctx2, section, x)) goto end;
}
if (!X509_sign(x,pkey,digest)) goto end;
ret=1;
end:
X509_STORE_CTX_cleanup(&xsc);
if (!ret)
ERR_print_errors(bio_err);
if (!sno) ASN1_INTEGER_free(bs);
return ret;
}
int SCT_CTX_set1_cert(SCT_CTX *sctx, X509 *cert, X509 *presigner)
{
unsigned char *certder = NULL, *preder = NULL;
X509 *pretmp = NULL;
int certderlen = 0, prederlen = 0;
int idx = -1;
int poison_ext_is_dup, sct_ext_is_dup;
int poison_idx = ct_x509_get_ext(cert, NID_ct_precert_poison, &poison_ext_is_dup);
/* Duplicate poison extensions are present - error */
if (poison_ext_is_dup)
goto err;
/* If *cert doesn't have a poison extension, it isn't a precert */
if (poison_idx == -1) {
/* cert isn't a precert, so we shouldn't have a presigner */
if (presigner != NULL)
goto err;
certderlen = i2d_X509(cert, &certder);
if (certderlen < 0)
goto err;
}
/* See if cert has a precert SCTs extension */
idx = ct_x509_get_ext(cert, NID_ct_precert_scts, &sct_ext_is_dup);
/* Duplicate SCT extensions are present - error */
if (sct_ext_is_dup)
goto err;
if (idx >= 0 && poison_idx >= 0) {
/*
* cert can't both contain SCTs (i.e. have an SCT extension) and be a
* precert (i.e. have a poison extension).
*/
goto err;
}
if (idx == -1) {
idx = poison_idx;
}
/*
* If either a poison or SCT extension is present, remove it before encoding
* cert. This, along with ct_x509_cert_fixup(), gets a TBSCertificate (see
* RFC5280) from cert, which is what the CT log signed when it produced the
* SCT.
*/
if (idx >= 0) {
X509_EXTENSION *ext;
/* Take a copy of certificate so we don't modify passed version */
pretmp = X509_dup(cert);
if (pretmp == NULL)
goto err;
ext = X509_delete_ext(pretmp, idx);
X509_EXTENSION_free(ext);
if (!ct_x509_cert_fixup(pretmp, presigner))
goto err;
prederlen = i2d_re_X509_tbs(pretmp, &preder);
if (prederlen <= 0)
goto err;
}
X509_free(pretmp);
OPENSSL_free(sctx->certder);
sctx->certder = certder;
sctx->certderlen = certderlen;
OPENSSL_free(sctx->preder);
sctx->preder = preder;
sctx->prederlen = prederlen;
return 1;
err:
OPENSSL_free(certder);
OPENSSL_free(preder);
X509_free(pretmp);
return 0;
}
