int DSO_free(DSO *dso)
{
int i;
if (dso == NULL)
return (1);
i = CRYPTO_add(&dso->references, -1, CRYPTO_LOCK_DSO);
#ifdef REF_PRINT
REF_PRINT("DSO", dso);
#endif
if (i > 0)
return (1);
#ifdef REF_CHECK
if (i < 0) {
fprintf(stderr, "DSO_free, bad reference count\n");
abort();
}
#endif
if ((dso->meth->dso_unload != NULL) && !dso->meth->dso_unload(dso)) {
DSOerr(DSO_F_DSO_FREE, DSO_R_UNLOAD_FAILED);
return (0);
}
if ((dso->meth->finish != NULL) && !dso->meth->finish(dso)) {
DSOerr(DSO_F_DSO_FREE, DSO_R_FINISH_FAILED);
return (0);
}
sk_void_free(dso->meth_data);
OPENSSL_free(dso->filename);
OPENSSL_free(dso->loaded_filename);
OPENSSL_free(dso);
return (1);
}
DSO *DSO_new_method(DSO_METHOD *meth)
{
DSO *ret;
if (default_DSO_meth == NULL)
/*
* We default to DSO_METH_openssl() which in turn defaults to
* stealing the "best available" method. Will fallback to
* DSO_METH_null() in the worst case.
*/
default_DSO_meth = DSO_METHOD_openssl();
ret = (DSO *)OPENSSL_malloc(sizeof(DSO));
if (ret == NULL) {
DSOerr(DSO_F_DSO_NEW_METHOD, ERR_R_MALLOC_FAILURE);
return (NULL);
}
memset(ret, 0, sizeof(DSO));
ret->meth_data = sk_void_new_null();
if (ret->meth_data == NULL) {
/* sk_new doesn't generate any errors so we do */
DSOerr(DSO_F_DSO_NEW_METHOD, ERR_R_MALLOC_FAILURE);
OPENSSL_free(ret);
return (NULL);
}
if (meth == NULL)
ret->meth = default_DSO_meth;
else
ret->meth = meth;
ret->references = 1;
if ((ret->meth->init != NULL) && !ret->meth->init(ret)) {
sk_void_free(ret->meth_data);
OPENSSL_free(ret);
ret = NULL;
}
return (ret);
}
