int engine_table_register(ENGINE_TABLE **table, ENGINE_CLEANUP_CB *cleanup,
ENGINE *e, const int *nids, int num_nids, int setdefault)
{
int ret = 0, added = 0;
ENGINE_PILE tmplate, *fnd;
CRYPTO_w_lock(CRYPTO_LOCK_ENGINE);
if(!(*table))
added = 1;
if(!int_table_check(table, 1))
goto end;
if(added)
/* The cleanup callback needs to be added */
engine_cleanup_add_first(cleanup);
while(num_nids--)
{
tmplate.nid = *nids;
fnd = lh_ENGINE_PILE_retrieve(&(*table)->piles, &tmplate);
if(!fnd)
{
fnd = OPENSSL_malloc(sizeof(ENGINE_PILE));
if(!fnd) goto end;
fnd->uptodate = 1;
fnd->nid = *nids;
fnd->sk = sk_ENGINE_new_null();
if(!fnd->sk)
{
OPENSSL_free(fnd);
goto end;
}
fnd->funct = NULL;
(void)lh_ENGINE_PILE_insert(&(*table)->piles, fnd);
}
/* A registration shouldn't add duplciate entries */
(void)sk_ENGINE_delete_ptr(fnd->sk, e);
/* if 'setdefault', this ENGINE goes to the head of the list */
if(!sk_ENGINE_push(fnd->sk, e))
goto end;
/* "touch" this ENGINE_PILE */
fnd->uptodate = 0;
if(setdefault)
{
if(!engine_unlocked_init(e))
{
ENGINEerr(ENGINE_F_ENGINE_TABLE_REGISTER,
ENGINE_R_INIT_FAILED);
goto end;
}
if(fnd->funct)
engine_unlocked_finish(fnd->funct, 0);
fnd->funct = e;
fnd->uptodate = 1;
}
nids++;
}
ret = 1;
end:
CRYPTO_w_unlock(CRYPTO_LOCK_ENGINE);
return ret;
}
ENGINE *
engine_table_select_tmp(ENGINE_TABLE **table, int nid, const char *f, int l)
#endif
{
ENGINE *ret = NULL;
ENGINE_PILE tmplate, *fnd = NULL;
int initres, loop = 0;
if (!(*table)) {
#ifdef ENGINE_TABLE_DEBUG
fprintf(stderr, "engine_table_dbg: %s:%d, nid=%d, nothing "
"registered!\n", f, l, nid);
#endif
return NULL;
}
ERR_set_mark();
CRYPTO_w_lock(CRYPTO_LOCK_ENGINE);
/* Check again inside the lock otherwise we could race against cleanup
* operations. But don't worry about a fprintf(stderr). */
if (!int_table_check(table, 0))
goto end;
tmplate.nid = nid;
fnd = lh_ENGINE_PILE_retrieve(&(*table)->piles, &tmplate);
if (!fnd)
goto end;
if (fnd->funct && engine_unlocked_init(fnd->funct)) {
#ifdef ENGINE_TABLE_DEBUG
fprintf(stderr, "engine_table_dbg: %s:%d, nid=%d, using "
"ENGINE '%s' cached\n", f, l, nid, fnd->funct->id);
#endif
ret = fnd->funct;
goto end;
}
if (fnd->uptodate) {
ret = fnd->funct;
goto end;
}
trynext:
ret = sk_ENGINE_value(fnd->sk, loop++);
if (!ret) {
#ifdef ENGINE_TABLE_DEBUG
fprintf(stderr, "engine_table_dbg: %s:%d, nid=%d, no "
"registered implementations would initialise\n", f, l, nid);
#endif
goto end;
}
/* Try to initialise the ENGINE? */
if ((ret->funct_ref > 0) || !(table_flags & ENGINE_TABLE_FLAG_NOINIT))
initres = engine_unlocked_init(ret);
else
initres = 0;
if (initres) {
/* Update 'funct' */
if ((fnd->funct != ret) && engine_unlocked_init(ret)) {
/* If there was a previous default we release it. */
if (fnd->funct)
engine_unlocked_finish(fnd->funct, 0);
fnd->funct = ret;
#ifdef ENGINE_TABLE_DEBUG
fprintf(stderr, "engine_table_dbg: %s:%d, nid=%d, "
"setting default to '%s'\n", f, l, nid, ret->id);
#endif
}
#ifdef ENGINE_TABLE_DEBUG
fprintf(stderr, "engine_table_dbg: %s:%d, nid=%d, using "
"newly initialised '%s'\n", f, l, nid, ret->id);
#endif
goto end;
}
goto trynext;
end:
/* If it failed, it is unlikely to succeed again until some future
* registrations have taken place. In all cases, we cache. */
if (fnd)
fnd->uptodate = 1;
#ifdef ENGINE_TABLE_DEBUG
if (ret)
fprintf(stderr, "engine_table_dbg: %s:%d, nid=%d, caching "
"ENGINE '%s'\n", f, l, nid, ret->id);
else
fprintf(stderr, "engine_table_dbg: %s:%d, nid=%d, caching "
"'no matching ENGINE'\n", f, l, nid);
#endif
CRYPTO_w_unlock(CRYPTO_LOCK_ENGINE);
/* Whatever happened, any failed init()s are not failures in this
* context, so clear our error state. */
ERR_pop_to_mark();
return ret;
}
