mirror of
https://github.com/albfan/miraclecast.git
synced 2025-03-09 23:38:56 +00:00
c590adbd2f
In this revision, the procedure of session negotiation is not yet completed but only TCP connection can be established between peers. You can try it by run script `res/miracle-wfdctl-demo` to see how it work.
417 lines
9 KiB
C
417 lines
9 KiB
C
/*
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* MiracleCast - Wifi-Display/Miracast Implementation
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*
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* Copyright (c) 2013-2014 David Herrmann <dh.herrmann@gmail.com>
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*
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* MiracleCast is free software; you can redistribute it and/or modify it
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* under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation; either version 2.1 of the License, or
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* (at your option) any later version.
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*
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* MiracleCast is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with MiracleCast; If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stdlib.h>
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#include <string.h>
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#include <systemd/sd-bus.h>
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#include "ctl.h"
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#include "util.h"
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#include "wfd-dbus.h"
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struct wfd_dbus
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{
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sd_bus *bus;
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sd_event *loop;
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bool exposed : 1;
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};
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int wfd_dbus_new(struct wfd_dbus **out, sd_event *loop, sd_bus *bus)
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{
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struct wfd_dbus *wfd_dbus = calloc(1, sizeof(struct wfd_dbus));
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if(!wfd_dbus) {
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return -ENOMEM;
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}
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wfd_dbus->bus = sd_bus_ref(bus);
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wfd_dbus->loop = sd_event_ref(loop);
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*out = wfd_dbus;
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return 0;
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}
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void wfd_dbus_free(struct wfd_dbus *wfd_dbus)
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{
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if(!wfd_dbus) {
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return;
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}
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if(wfd_dbus->exposed) {
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sd_bus_release_name(wfd_dbus->bus, "org.freedesktop.miracle.wfd");
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}
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if(wfd_dbus->bus) {
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sd_bus_unref(wfd_dbus->bus);
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}
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if(wfd_dbus->loop) {
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sd_event_unref(wfd_dbus->loop);
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}
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free(wfd_dbus);
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}
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static inline int wfd_dbus_get_sink_path(struct wfd_sink *s, char **out)
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{
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return sd_bus_path_encode("/org/freedesktop/miracle/wfd/sink",
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wfd_sink_get_label(s),
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out);
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}
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static inline int wfd_dbus_get_session_path(struct wfd_session *s, char **out)
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{
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char buf[64];
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int r = snprintf(buf, sizeof(buf), "%" PRIu64, s->id);
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if(0 > r) {
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return r;
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}
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return sd_bus_path_encode("/org/freedesktop/miracle/wfd/session",
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buf,
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out);
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}
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static int wfd_dbus_enum(sd_bus *bus,
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const char *path,
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void *userdata,
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char ***out,
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sd_bus_error *out_error)
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{
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int r = 0, i = 0;
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char **nodes, *node;
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struct wfd_dbus *wfd_dbus = userdata;
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struct ctl_wfd *wfd = ctl_wfd_get();
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struct wfd_sink *sink;
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if(strcmp("/org/freedesktop/miracle/wfd", path)) {
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return 0;
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}
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if(!wfd->n_sinks) {
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return 0;
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}
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nodes = malloc((wfd->n_sinks + 1) * sizeof(char *));
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if(!nodes) {
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return -ENOMEM;
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}
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ctl_wfd_foreach_sink(sink, wfd) {
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r = wfd_dbus_get_sink_path(sink, &node);
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if(0 > r) {
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goto free_nodes;
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}
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nodes[i ++] = node;
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}
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nodes[i ++] = NULL;
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*out = nodes;
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return 0;
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free_nodes:
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while(i --) {
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free(nodes[i]);
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}
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free(nodes);
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return r;
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}
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int wfd_dbus_notify_new_sink(struct wfd_dbus *wfd_dbus, const char *p2p_mac)
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{
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_shl_free_ char *path;
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_sd_bus_message_unref_ sd_bus_message *m;
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int r = sd_bus_message_new_signal(wfd_dbus->bus,
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&m,
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"/org/freedesktop/miracle/wfd",
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"org.freedesktop.DBus.ObjectManager",
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"InterfaceAdded");
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if(0 > r) {
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return r;
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}
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r = sd_bus_path_encode("/org/freedesktop/miracle/wfd/sink", p2p_mac, &path);
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if(0 > r) {
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return r;
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}
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r = sd_bus_message_append(m, "o", path);
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if(0 > r) {
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return r;
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}
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r = sd_bus_message_open_container(m, 'a', "{sa{sv}}");
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if(0 > r) {
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return r;
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}
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r = sd_bus_message_append(m, "{sa{sv}}", "org.freedesktop.miracle.wfd.Sink", 0);
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if(0 > r) {
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return r;
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}
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r = sd_bus_message_open_container(m, 'e', "sa{sv}");
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if(0 > r) {
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return r;
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}
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/*r = sd_bus_message_append(m, "{sa{sv}}", "org.freedesktop.DBus.Peer", 0);*/
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/*if (r < 0)*/
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/*return r;*/
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/*r = sd_bus_message_append(m, "{sa{sv}}", "org.freedesktop.DBus.Introspectable", 0);*/
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/*if (r < 0)*/
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/*return r;*/
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/*r = sd_bus_message_append(m, "{sa{sv}}", "org.freedesktop.DBus.Properties", 0);*/
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/*if (r < 0)*/
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/*return r;*/
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/*r = sd_bus_message_append(m, "{sa{sv}}", "org.freedesktop.DBus.ObjectManager", 0);*/
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/*if (r < 0)*/
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/*return r;*/
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return 0;
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}
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static int wfd_dbus_find_sink(sd_bus *bus,
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const char *path,
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const char *interface,
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void *userdata,
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void **ret_found,
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sd_bus_error *ret_error)
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{
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_shl_free_ char *node = NULL;
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struct wfd_dbus *wfd_dbus = userdata;
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struct wfd_sink *sink;
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int r = sd_bus_path_decode(path,
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"/org/freedesktop/miracle/wfd/sink",
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&node);
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if(0 >= r || !node) {
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return r;
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}
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r = ctl_wfd_find_sink_by_label(ctl_wfd_get(), node, &sink);
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if(r) {
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*ret_found = sink;
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}
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return r;
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}
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static int wfd_dbus_find_session(sd_bus *bus,
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const char *path,
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const char *interface,
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void *userdata,
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void **ret_found,
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sd_bus_error *ret_error)
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{
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return 0;
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}
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static int wfd_dbus_sink_start_session(sd_bus_message *m,
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void *userdata,
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sd_bus_error *ret_error)
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{
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struct wfd_sink *sink = userdata;
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struct wfd_session *session;
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_shl_free_ char *path = NULL;
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int r = wfd_sink_start_session(sink, &session);
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if(0 > r) {
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return r;
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}
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r = wfd_dbus_get_session_path(session, &path);
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if(0 > r) {
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goto free_session;
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}
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log_debug("path=%s", path);
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r = sd_bus_reply_method_return(m, "o", path);
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if(0 <= r) {
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return r;
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}
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free_session:
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wfd_session_free(session);
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return r;
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}
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static int wfd_dbus_sink_get_audio_formats(sd_bus *bus,
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const char *path,
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const char *interface,
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const char *property,
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sd_bus_message *reply,
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void *userdata,
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sd_bus_error *ret_error)
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{
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return 0;
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}
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static int wfd_dbus_sink_get_video_formats(sd_bus *bus,
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const char *path,
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const char *interface,
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const char *property,
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sd_bus_message *reply,
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void *userdata,
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sd_bus_error *ret_error)
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{
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return 0;
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}
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static int wfd_dbus_sink_has_video(sd_bus *bus,
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const char *path,
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const char *interface,
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const char *property,
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sd_bus_message *reply,
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void *userdata,
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sd_bus_error *ret_error)
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{
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return 0;
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}
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static int wfd_dbus_sink_get_peer(sd_bus *bus,
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const char *path,
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const char *interface,
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const char *property,
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sd_bus_message *reply,
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void *userdata,
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sd_bus_error *ret_error)
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{
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return 0;
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}
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static int wfd_dbus_sink_has_audio(sd_bus *bus,
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const char *path,
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const char *interface,
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const char *property,
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sd_bus_message *reply,
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void *userdata,
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sd_bus_error *ret_error)
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{
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return 0;
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}
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static int wfd_dbus_session_end(sd_bus_message *m,
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void *userdata,
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sd_bus_error *ret_error)
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{
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return 0;
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}
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static int wfd_dbus_session_get_sink(sd_bus *bus,
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const char *path,
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const char *interface,
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const char *property,
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sd_bus_message *reply,
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void *userdata,
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sd_bus_error *ret_error)
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{
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return 0;
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}
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static int wfd_dbus_session_get_state(sd_bus *bus,
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const char *path,
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const char *interface,
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const char *property,
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sd_bus_message *reply,
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void *userdata,
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sd_bus_error *ret_error)
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{
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return 0;
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}
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static const sd_bus_vtable wfd_dbus_vtable[] = {
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SD_BUS_VTABLE_START(0),
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SD_BUS_VTABLE_END,
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};
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static const sd_bus_vtable wfd_dbus_sink_vtable[] = {
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SD_BUS_VTABLE_START(0),
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SD_BUS_METHOD("StartSession", NULL, "o", wfd_dbus_sink_start_session, 0),
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/*SD_BUS_PROPERTY("AudioFormats", "a{sv}", wfd_dbus_sink_get_audio_formats, 0, SD_BUS_VTABLE_PROPERTY_CONST),*/
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/*SD_BUS_PROPERTY("VideoFormats", "a{sv}", wfd_dbus_sink_get_video_formats, 0, SD_BUS_VTABLE_PROPERTY_CONST),*/
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/*SD_BUS_PROPERTY("HasAudio", "b", wfd_dbus_sink_has_audio, 0, SD_BUS_VTABLE_PROPERTY_CONST),*/
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/*SD_BUS_PROPERTY("HasVideo", "b", wfd_dbus_sink_has_video, 0, SD_BUS_VTABLE_PROPERTY_CONST),*/
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/*SD_BUS_PROPERTY("Peer", "o", wfd_dbus_sink_get_peer, 0, SD_BUS_VTABLE_PROPERTY_CONST),*/
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SD_BUS_VTABLE_END,
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};
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static const sd_bus_vtable wfd_dbus_session_vtable[] = {
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SD_BUS_VTABLE_START(0),
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SD_BUS_METHOD("End", NULL, NULL, wfd_dbus_session_end, 0),
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SD_BUS_PROPERTY("Sink", "o", wfd_dbus_session_get_sink, 0, SD_BUS_VTABLE_PROPERTY_CONST),
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SD_BUS_PROPERTY("State", "i", wfd_dbus_session_get_state, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
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SD_BUS_VTABLE_END,
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};
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int wfd_dbus_expose(struct wfd_dbus *wfd_dbus)
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{
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int r = sd_bus_add_object_vtable(wfd_dbus->bus,
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NULL,
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"/org/freedesktop/miracle/wfd",
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"org.freedesktop.miracle.wfd.Display",
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wfd_dbus_vtable,
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wfd_dbus);
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if(0 > r) {
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goto end;
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}
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r = sd_bus_add_fallback_vtable(wfd_dbus->bus,
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NULL,
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"/org/freedesktop/miracle/wfd/sink",
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"org.freedesktop.miracle.wfd.Sink",
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wfd_dbus_sink_vtable,
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wfd_dbus_find_sink,
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wfd_dbus);
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if(0 > r) {
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goto end;
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}
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/*r = sd_bus_add_fallback_vtable(wfd_dbus->bus,*/
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/*NULL,*/
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/*"/org/freedesktop/miracle/wfd/session",*/
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/*"org.freedesktop.miracle.wfd.Session",*/
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/*wfd_dbus_session_vtable,*/
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/*wfd_dbus_find_session,*/
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/*wfd_dbus);*/
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/*if(0 > r) {*/
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/*goto end;*/
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/*}*/
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r = sd_bus_add_node_enumerator(wfd_dbus->bus,
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NULL,
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"/org/freedesktop/miracle/wfd",
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wfd_dbus_enum,
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wfd_dbus);
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if(0 > r) {
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goto end;
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}
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r = sd_bus_add_object_manager(wfd_dbus->bus, NULL, "/org/freedesktop/miracle/wfd");
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if(0 > r) {
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goto end;
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}
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r = sd_bus_request_name(wfd_dbus->bus, "org.freedesktop.miracle.wfd", 0);
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if(0 < r) {
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wfd_dbus->exposed = true;
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}
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end:
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return r;
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}
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