mirror of https://github.com/labapart/gattlib
83 lines
2.1 KiB
C
83 lines
2.1 KiB
C
/*
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* Copyright (c) 2016-2021, Olivier Martin <olivier@labapart.org>
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*/
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#include <gio/gunixfdlist.h>
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#include "gattlib_internal.h"
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#if BLUEZ_VERSION < BLUEZ_VERSIONS(5, 48)
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int gattlib_write_char_by_uuid_stream_open(gatt_connection_t* connection, uuid_t* uuid, gatt_stream_t **stream, uint16_t *mtu)
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{
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return GATTLIB_NOT_SUPPORTED;
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}
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int gattlib_write_char_stream_write(gatt_stream_t *stream, const void *buffer, size_t buffer_len)
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{
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return GATTLIB_NOT_SUPPORTED;
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}
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int gattlib_write_char_stream_close(gatt_stream_t *stream)
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{
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return GATTLIB_NOT_SUPPORTED;
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}
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#else
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int gattlib_write_char_by_uuid_stream_open(gatt_connection_t* connection, uuid_t* uuid, gatt_stream_t **stream, uint16_t *mtu)
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{
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struct dbus_characteristic dbus_characteristic = get_characteristic_from_uuid(connection, uuid);
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GError *error = NULL;
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GUnixFDList *fd_list;
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GVariant *out_fd;
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int fd;
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GVariantBuilder *variant_options = g_variant_builder_new(G_VARIANT_TYPE("a{sv}"));
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org_bluez_gatt_characteristic1_call_acquire_write_sync(
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dbus_characteristic.gatt,
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g_variant_builder_end(variant_options),
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NULL /* fd_list */,
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&out_fd, mtu,
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&fd_list,
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NULL /* cancellable */, &error);
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g_variant_builder_unref(variant_options);
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if (error != NULL) {
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fprintf(stderr, "Failed to acquired write DBus GATT characteristic: %s\n", error->message);
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g_error_free(error);
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return GATTLIB_ERROR_DBUS;
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}
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error = NULL;
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fd = g_unix_fd_list_get(fd_list, g_variant_get_handle(out_fd), &error);
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if (error != NULL) {
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fprintf(stderr, "Failed to retrieve Unix File Descriptor: %s\n", error->message);
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g_error_free(error);
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return GATTLIB_ERROR_DBUS;
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}
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// We abuse the pointer 'stream' to pass the 'File Descriptor'
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*stream = (gatt_stream_t*)(unsigned long)fd;
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return GATTLIB_SUCCESS;
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}
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int gattlib_write_char_stream_write(gatt_stream_t *stream, const void *buffer, size_t buffer_len)
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{
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write((unsigned long)stream, buffer, buffer_len);
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return GATTLIB_SUCCESS;
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}
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int gattlib_write_char_stream_close(gatt_stream_t *stream)
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{
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close((unsigned long)stream);
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return GATTLIB_SUCCESS;
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}
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#endif /* #if BLUEZ_VERSION < BLUEZ_VERSIONS(5, 48) */
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