C++ (Cpp) px_combo_init Examples

Example #1

File: pgcrypto.c Project: CraigBryan/PostgresqlFun

Datum
pg_decrypt_iv(PG_FUNCTION_ARGS)
{
	int			err;
	bytea	   *data,
			   *key,
			   *iv,
			   *res;
	text	   *type;
	PX_Combo   *c;
	unsigned	dlen,
				klen,
				rlen,
				ivlen;

	if (PG_ARGISNULL(0) || PG_ARGISNULL(1)
		|| PG_ARGISNULL(2) || PG_ARGISNULL(3))
		PG_RETURN_NULL();

	type = PG_GETARG_TEXT_P(3);
	c = find_provider(type, (PFN) px_find_combo, "Cipher", 0);

	data = PG_GETARG_BYTEA_P(0);
	key = PG_GETARG_BYTEA_P(1);
	iv = PG_GETARG_BYTEA_P(2);
	dlen = VARSIZE(data) - VARHDRSZ;
	klen = VARSIZE(key) - VARHDRSZ;
	ivlen = VARSIZE(iv) - VARHDRSZ;

	rlen = px_combo_decrypt_len(c, dlen);
	res = palloc(VARHDRSZ + rlen);

	err = px_combo_init(c, (uint8 *) VARDATA(key), klen,
						(uint8 *) VARDATA(iv), ivlen);
	if (!err)
		px_combo_decrypt(c, (uint8 *) VARDATA(data), dlen,
						 (uint8 *) VARDATA(res), &rlen);

	px_combo_free(c);

	if (err)
		ereport(ERROR,
				(errcode(ERRCODE_EXTERNAL_ROUTINE_INVOCATION_EXCEPTION),
				 errmsg("decrypt_iv error: %s", px_strerror(err))));

	VARATT_SIZEP(res) = VARHDRSZ + rlen;

	PG_FREE_IF_COPY(data, 0);
	PG_FREE_IF_COPY(key, 1);
	PG_FREE_IF_COPY(iv, 2);
	PG_FREE_IF_COPY(type, 3);

	PG_RETURN_BYTEA_P(res);
}

Example #2

File: pgcrypto.c Project: adunstan/pg-cvs-mirror

Datum
pg_encrypt(PG_FUNCTION_ARGS)
{
	int			err;
	bytea	   *data,
			   *key,
			   *res;
	text	   *type;
	PX_Combo   *c;
	unsigned	dlen,
				klen,
				rlen;

	type = PG_GETARG_TEXT_P(2);
	c = find_provider(type, (PFN) px_find_combo, "Cipher", 0);

	data = PG_GETARG_BYTEA_P(0);
	key = PG_GETARG_BYTEA_P(1);
	dlen = VARSIZE(data) - VARHDRSZ;
	klen = VARSIZE(key) - VARHDRSZ;

	rlen = px_combo_encrypt_len(c, dlen);
	res = palloc(VARHDRSZ + rlen);

	err = px_combo_init(c, (uint8 *) VARDATA(key), klen, NULL, 0);
	if (!err)
		err = px_combo_encrypt(c, (uint8 *) VARDATA(data), dlen,
							   (uint8 *) VARDATA(res), &rlen);
	px_combo_free(c);

	PG_FREE_IF_COPY(data, 0);
	PG_FREE_IF_COPY(key, 1);
	PG_FREE_IF_COPY(type, 2);

	if (err)
	{
		pfree(res);
		ereport(ERROR,
				(errcode(ERRCODE_EXTERNAL_ROUTINE_INVOCATION_EXCEPTION),
				 errmsg("encrypt error: %s", px_strerror(err))));
	}

	SET_VARSIZE(res, VARHDRSZ + rlen);
	PG_RETURN_BYTEA_P(res);
}