size_t sk_push(_STACK *sk, void *p) { return (sk_insert(sk, p, sk->num)); }
int sk_unshift (_STACK * st, void *data)
{
return (sk_insert (st, data, 0));
}
int sk_push (_STACK * st, void *data)
{
return (sk_insert (st, data, st->num));
}
int sk_push(STACK *st, char *data)
{
return(sk_insert(st,data,st->num));
}
int sk_unshift(STACK *st, char *data)
{
return(sk_insert(st,data,0));
}
/*
* der points to the start of one or more DER-encoded keys. If there is
* more than one key, the keys must be contained in multi-key CGA
* extensions.
*
* Returns a stack of EVP_PKEYs on success.
*/
_STACK *
cga_der2keys(uint8_t *der, int dlen)
{
uint8_t *dk;
EVP_PKEY *k;
int klen, elen;
uint16_t type;
_STACK *sk;
if ((sk = sk_new_null()) == NULL) {
APPLOG_NOMEM();
return (NULL);
}
/* Extract first key, not in an extension */
dk = cga_parse_key(der, &klen);
DBG(&dbg_asn1, "getting key 1 (klen %d dlen %d)", klen, dlen);
if ((k = cga_der2key(der, klen)) == NULL) {
goto fail;
}
if (sk_push(sk, (void *)k) == 0) {
APPLOG_NOMEM();
goto fail;
}
/* Extract any keys in extensions */
der += klen;
dlen -= klen;
while (dlen > 0) {
if (cga_parse_next_ext(der, dlen, &elen, &type) < 0) {
goto fail;
}
DBG(&dbg_asn1, "got extension type %d len %d", type, elen);
if (dlen < elen) {
DBG(&dbg_asn1, "elen > dlen (%d / %d)", elen, dlen);
goto fail;
}
if (type != CGA_MULTIKEY_EXT) {
goto next;
}
dk = cga_get_multikey_key(der, &klen);
DBG(&dbg_asn1, "getting ext key (%d bytes)", klen);
if ((k = cga_der2key(dk, klen)) == NULL) {
goto fail;
}
if (sk_insert(sk, (void *)k, 0) == 0) {
APPLOG_NOMEM();
goto fail;
}
next:
dlen -= elen;
der += elen;
}
return (sk);
fail:
cga_free_keystack(sk);
return (NULL);
}
