X509 *
ca_by_subjectpubkey(X509_STORE *ctx, uint8_t *sig, size_t siglen)
{
STACK_OF(X509_OBJECT) *h;
X509_OBJECT *xo;
X509 *ca;
int i;
unsigned int len;
uint8_t md[EVP_MAX_MD_SIZE];
h = ctx->objs;
for (i = 0; i < sk_X509_OBJECT_num(h); i++) {
xo = sk_X509_OBJECT_value(h, i);
if (xo->type != X509_LU_X509)
continue;
ca = xo->data.x509;
len = sizeof(md);
ca_subjectpubkey_digest(ca, md, &len);
if (len == siglen && memcmp(md, sig, len) == 0)
return (ca);
}
return (NULL);
}
X509 *
ca_by_issuer(X509_STORE *ctx, X509_NAME *subject, struct iked_static_id *id)
{
STACK_OF(X509_OBJECT) *h;
X509_OBJECT *xo;
X509 *cert;
int i;
X509_NAME *issuer;
if (subject == NULL)
return (NULL);
h = ctx->objs;
for (i = 0; i < sk_X509_OBJECT_num(h); i++) {
xo = sk_X509_OBJECT_value(h, i);
if (xo->type != X509_LU_X509)
continue;
cert = xo->data.x509;
if ((issuer = X509_get_issuer_name(cert)) == NULL)
continue;
else if (X509_NAME_cmp(subject, issuer) == 0) {
if (ca_x509_subjectaltname_cmp(cert, id) != 0)
continue;
return (cert);
}
}
return (NULL);
}
int
ca_reload(struct iked *env)
{
struct ca_store *store = env->sc_priv;
uint8_t md[EVP_MAX_MD_SIZE];
char file[PATH_MAX];
struct iovec iov[2];
struct dirent *entry;
STACK_OF(X509_OBJECT) *h;
X509_OBJECT *xo;
X509 *x509;
DIR *dir;
int i, len, iovcnt = 0;
/*
* Load CAs
*/
if ((dir = opendir(IKED_CA_DIR)) == NULL)
return (-1);
while ((entry = readdir(dir)) != NULL) {
if ((entry->d_type != DT_REG) &&
(entry->d_type != DT_LNK))
continue;
if (snprintf(file, sizeof(file), "%s%s",
IKED_CA_DIR, entry->d_name) == -1)
continue;
if (!X509_load_cert_file(store->ca_calookup, file,
X509_FILETYPE_PEM)) {
log_warn("%s: failed to load ca file %s", __func__,
entry->d_name);
ca_sslerror(__func__);
continue;
}
log_debug("%s: loaded ca file %s", __func__, entry->d_name);
}
closedir(dir);
/*
* Load CRLs for the CAs
*/
if ((dir = opendir(IKED_CRL_DIR)) == NULL)
return (-1);
while ((entry = readdir(dir)) != NULL) {
if ((entry->d_type != DT_REG) &&
(entry->d_type != DT_LNK))
continue;
if (snprintf(file, sizeof(file), "%s%s",
IKED_CRL_DIR, entry->d_name) == -1)
continue;
if (!X509_load_crl_file(store->ca_calookup, file,
X509_FILETYPE_PEM)) {
log_warn("%s: failed to load crl file %s", __func__,
entry->d_name);
ca_sslerror(__func__);
continue;
}
/* Only enable CRL checks if we actually loaded a CRL */
X509_STORE_set_flags(store->ca_cas, X509_V_FLAG_CRL_CHECK);
log_debug("%s: loaded crl file %s", __func__, entry->d_name);
}
closedir(dir);
/*
* Save CAs signatures for the IKEv2 CERTREQ
*/
ibuf_release(env->sc_certreq);
if ((env->sc_certreq = ibuf_new(NULL, 0)) == NULL)
return (-1);
h = store->ca_cas->objs;
for (i = 0; i < sk_X509_OBJECT_num(h); i++) {
xo = sk_X509_OBJECT_value(h, i);
if (xo->type != X509_LU_X509)
continue;
x509 = xo->data.x509;
len = sizeof(md);
ca_subjectpubkey_digest(x509, md, &len);
log_debug("%s: %s", __func__, x509->name);
if (ibuf_add(env->sc_certreq, md, len) != 0) {
ibuf_release(env->sc_certreq);
return (-1);
}
}
if (ibuf_length(env->sc_certreq)) {
env->sc_certreqtype = IKEV2_CERT_X509_CERT;
iov[0].iov_base = &env->sc_certreqtype;
iov[0].iov_len = sizeof(env->sc_certreqtype);
iovcnt++;
iov[1].iov_base = ibuf_data(env->sc_certreq);
iov[1].iov_len = ibuf_length(env->sc_certreq);
iovcnt++;
log_debug("%s: loaded %zu ca certificate%s", __func__,
ibuf_length(env->sc_certreq) / SHA_DIGEST_LENGTH,
ibuf_length(env->sc_certreq) == SHA_DIGEST_LENGTH ?
"" : "s");
(void)proc_composev(&env->sc_ps, PROC_IKEV2, IMSG_CERTREQ,
iov, iovcnt);
}
/*
* Load certificates
*/
if ((dir = opendir(IKED_CERT_DIR)) == NULL)
return (-1);
while ((entry = readdir(dir)) != NULL) {
if ((entry->d_type != DT_REG) &&
(entry->d_type != DT_LNK))
continue;
if (snprintf(file, sizeof(file), "%s%s",
IKED_CERT_DIR, entry->d_name) == -1)
continue;
if (!X509_load_cert_file(store->ca_certlookup, file,
X509_FILETYPE_PEM)) {
log_warn("%s: failed to load cert file %s", __func__,
entry->d_name);
ca_sslerror(__func__);
continue;
}
log_debug("%s: loaded cert file %s", __func__, entry->d_name);
}
closedir(dir);
h = store->ca_certs->objs;
for (i = 0; i < sk_X509_OBJECT_num(h); i++) {
xo = sk_X509_OBJECT_value(h, i);
if (xo->type != X509_LU_X509)
continue;
x509 = xo->data.x509;
(void)ca_validate_cert(env, NULL, x509, 0);
}
if (!env->sc_certreqtype)
env->sc_certreqtype = store->ca_pubkey.id_type;
log_debug("%s: local cert type %s", __func__,
print_map(env->sc_certreqtype, ikev2_cert_map));
iov[0].iov_base = &env->sc_certreqtype;
iov[0].iov_len = sizeof(env->sc_certreqtype);
if (iovcnt == 0)
iovcnt++;
(void)proc_composev(&env->sc_ps, PROC_IKEV2, IMSG_CERTREQ, iov, iovcnt);
return (0);
}