mirror of
https://gitlab.freedesktop.org/pipewire/pipewire.git
synced 2025-11-04 13:30:12 -05:00
move things around
This commit is contained in:
parent
847cef83b6
commit
d1655196c3
130 changed files with 363 additions and 335 deletions
712
src/modules/module-flatpak.c
Normal file
712
src/modules/module-flatpak.c
Normal file
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@ -0,0 +1,712 @@
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/* PipeWire
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* Copyright (C) 2016 Wim Taymans <wim.taymans@gmail.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but 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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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#include <string.h>
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#include <stdio.h>
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#include <errno.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include "config.h"
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#include <dbus/dbus.h>
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#include "pipewire/interfaces.h"
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#include "pipewire/utils.h"
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#include "pipewire/core.h"
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#include "pipewire/module.h"
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struct impl {
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struct pw_core *core;
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struct pw_properties *properties;
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DBusConnection *bus;
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struct pw_listener global_added;
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struct pw_listener global_removed;
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struct spa_list client_list;
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struct spa_source *dispatch_event;
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};
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struct client_info {
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struct impl *impl;
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struct spa_list link;
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struct pw_client *client;
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bool is_sandboxed;
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const struct pw_core_methods *old_methods;
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struct pw_core_methods core_methods;
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struct spa_list async_pending;
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struct pw_listener resource_impl;
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struct pw_listener resource_removed;
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};
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struct async_pending {
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struct spa_list link;
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struct client_info *info;
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bool handled;
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char *handle;
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struct pw_resource *resource;
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char *factory_name;
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char *name;
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struct pw_properties *properties;
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uint32_t new_id;
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};
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static struct client_info *find_client_info(struct impl *impl, struct pw_client *client)
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{
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struct client_info *info;
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spa_list_for_each(info, &impl->client_list, link) {
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if (info->client == client)
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return info;
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}
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return NULL;
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}
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static void close_request(struct async_pending *p)
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{
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DBusMessage *m = NULL;
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struct impl *impl = p->info->impl;
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pw_log_debug("pending %p: handle %s", p, p->handle);
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if (!(m = dbus_message_new_method_call("org.freedesktop.portal.Request",
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p->handle,
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"org.freedesktop.portal.Request", "Close"))) {
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pw_log_error("Failed to create message");
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return;
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}
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if (!dbus_connection_send(impl->bus, m, NULL))
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pw_log_error("Failed to send message");
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dbus_message_unref(m);
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}
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static struct async_pending *find_pending(struct client_info *cinfo, const char *handle)
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{
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struct async_pending *p;
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spa_list_for_each(p, &cinfo->async_pending, link) {
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if (strcmp(p->handle, handle) == 0)
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return p;
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}
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return NULL;
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}
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static void free_pending(struct async_pending *p)
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{
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if (!p->handled)
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close_request(p);
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pw_log_debug("pending %p: handle %s", p, p->handle);
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spa_list_remove(&p->link);
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free(p->handle);
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free(p->factory_name);
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free(p->name);
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if (p->properties)
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pw_properties_free(p->properties);
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free(p);
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}
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static void client_info_free(struct client_info *cinfo)
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{
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struct async_pending *p, *tmp;
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spa_list_for_each_safe(p, tmp, &cinfo->async_pending, link)
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free_pending(p);
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spa_list_remove(&cinfo->link);
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free(cinfo);
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}
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static bool client_is_sandboxed(struct pw_client *cl)
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{
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char data[2048], *ptr;
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size_t n, size;
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const char *state = NULL;
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const char *current;
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bool result;
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int fd;
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pid_t pid;
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if (cl->ucred_valid) {
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pw_log_info("client has trusted pid %d", cl->ucred.pid);
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} else {
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pw_log_info("no trusted pid found, assuming not sandboxed\n");
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return false;
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}
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pid = cl->ucred.pid;
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sprintf(data, "/proc/%u/cgroup", pid);
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fd = open(data, O_RDONLY | O_CLOEXEC, 0);
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if (fd == -1)
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return false;
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spa_zero(data);
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size = sizeof(data);
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ptr = data;
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while (size > 0) {
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int r;
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if ((r = read(fd, data, size)) < 0) {
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if (errno == EINTR)
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continue;
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else
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break;
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}
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if (r == 0)
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break;
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ptr += r;
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size -= r;
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}
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close(fd);
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result = false;
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while ((current = pw_split_walk(data, "\n", &n, &state)) != NULL) {
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if (strncmp(current, "1:name=systemd:", strlen("1:name=systemd:")) == 0) {
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const char *p = strstr(current, "flatpak-");
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if (p && p - current < n) {
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pw_log_info("found a flatpak cgroup, assuming sandboxed\n");
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result = true;
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break;
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}
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}
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}
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return result;
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}
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static bool
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check_global_owner(struct pw_core *core, struct pw_client *client, struct pw_global *global)
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{
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if (global == NULL)
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return false;
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if (global->owner == NULL)
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return true;
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if (global->owner->client->ucred.uid == client->ucred.uid)
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return true;
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return false;
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}
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static bool
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do_global_filter(struct pw_global *global, struct pw_client *client, void *data)
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{
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if (global->type == client->core->type.link) {
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struct pw_link *link = global->object;
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/* we must be able to see both nodes */
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if (link->output
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&& !check_global_owner(client->core, client, link->output->node->global))
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return false;
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if (link->input
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&& !check_global_owner(client->core, client, link->input->node->global))
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return false;
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} else if (!check_global_owner(client->core, client, global))
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return false;
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return true;
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}
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static DBusHandlerResult
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portal_response(DBusConnection *connection, DBusMessage *msg, void *user_data)
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{
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struct client_info *cinfo = user_data;
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if (dbus_message_is_signal(msg, "org.freedesktop.portal.Request", "Response")) {
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uint32_t response = 2;
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DBusError error;
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struct async_pending *p;
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dbus_error_init(&error);
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dbus_connection_remove_filter(connection, portal_response, cinfo);
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if (!dbus_message_get_args
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(msg, &error, DBUS_TYPE_UINT32, &response, DBUS_TYPE_INVALID)) {
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pw_log_error("failed to parse Response: %s", error.message);
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dbus_error_free(&error);
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}
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p = find_pending(cinfo, dbus_message_get_path(msg));
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if (p == NULL)
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return DBUS_HANDLER_RESULT_HANDLED;
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p->handled = true;
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pw_log_debug("portal check result: %d", response);
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if (response == 0) {
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cinfo->old_methods->create_node (p->resource,
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p->factory_name,
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p->name,
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&p->properties->dict,
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p->new_id);
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} else {
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pw_core_notify_error(cinfo->client->core_resource,
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p->resource->id, SPA_RESULT_NO_PERMISSION, "not allowed");
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}
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free_pending(p);
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pw_client_set_busy(cinfo->client, false);
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return DBUS_HANDLER_RESULT_HANDLED;
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}
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return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
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}
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static void do_create_node(void *object,
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const char *factory_name,
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const char *name,
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const struct spa_dict *props,
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uint32_t new_id)
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{
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struct pw_resource *resource = object;
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struct client_info *cinfo = resource->access_private;
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struct impl *impl = cinfo->impl;
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struct pw_client *client = resource->client;
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DBusMessage *m = NULL, *r = NULL;
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DBusError error;
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pid_t pid;
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DBusMessageIter msg_iter;
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DBusMessageIter dict_iter;
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const char *handle;
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const char *device;
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struct async_pending *p;
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if (!cinfo->is_sandboxed) {
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cinfo->old_methods->create_node (object, factory_name, name, props, new_id);
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return;
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}
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if (strcmp(factory_name, "client-node") != 0) {
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pw_log_error("can only allow client-node");
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goto not_allowed;
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}
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pw_log_info("ask portal for client %p", cinfo->client);
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dbus_error_init(&error);
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if (!(m = dbus_message_new_method_call("org.freedesktop.portal.Desktop",
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"/org/freedesktop/portal/desktop",
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"org.freedesktop.portal.Device", "AccessDevice")))
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goto no_method_call;
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device = "camera";
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pid = cinfo->client->ucred.pid;
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if (!dbus_message_append_args(m, DBUS_TYPE_UINT32, &pid, DBUS_TYPE_INVALID))
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goto message_failed;
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dbus_message_iter_init_append(m, &msg_iter);
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dbus_message_iter_open_container(&msg_iter, DBUS_TYPE_ARRAY, "s", &dict_iter);
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dbus_message_iter_append_basic(&dict_iter, DBUS_TYPE_STRING, &device);
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dbus_message_iter_close_container(&msg_iter, &dict_iter);
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dbus_message_iter_open_container(&msg_iter, DBUS_TYPE_ARRAY, "{sv}", &dict_iter);
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dbus_message_iter_close_container(&msg_iter, &dict_iter);
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if (!(r = dbus_connection_send_with_reply_and_block(impl->bus, m, -1, &error)))
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goto send_failed;
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||||
|
||||
dbus_message_unref(m);
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||||
|
||||
if (!dbus_message_get_args(r, &error, DBUS_TYPE_OBJECT_PATH, &handle, DBUS_TYPE_INVALID))
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goto parse_failed;
|
||||
|
||||
dbus_message_unref(r);
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||||
|
||||
dbus_bus_add_match(impl->bus,
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||||
"type='signal',interface='org.freedesktop.portal.Request'", &error);
|
||||
dbus_connection_flush(impl->bus);
|
||||
if (dbus_error_is_set(&error))
|
||||
goto subscribe_failed;
|
||||
|
||||
dbus_connection_add_filter(impl->bus, portal_response, cinfo, NULL);
|
||||
|
||||
p = calloc(1, sizeof(struct async_pending));
|
||||
p->info = cinfo;
|
||||
p->handle = strdup(handle);
|
||||
p->handled = false;
|
||||
p->resource = resource;
|
||||
p->factory_name = strdup(factory_name);
|
||||
p->name = strdup(name);
|
||||
p->properties = props ? pw_properties_new_dict(props) : NULL;
|
||||
p->new_id = new_id;
|
||||
pw_client_set_busy(client, true);
|
||||
|
||||
pw_log_debug("pending %p: handle %s", p, handle);
|
||||
spa_list_insert(cinfo->async_pending.prev, &p->link);
|
||||
|
||||
return;
|
||||
|
||||
no_method_call:
|
||||
pw_log_error("Failed to create message");
|
||||
goto not_allowed;
|
||||
message_failed:
|
||||
dbus_message_unref(m);
|
||||
goto not_allowed;
|
||||
send_failed:
|
||||
pw_log_error("Failed to call portal: %s", error.message);
|
||||
dbus_error_free(&error);
|
||||
dbus_message_unref(m);
|
||||
goto not_allowed;
|
||||
parse_failed:
|
||||
pw_log_error("Failed to parse AccessDevice result: %s", error.message);
|
||||
dbus_error_free(&error);
|
||||
dbus_message_unref(r);
|
||||
goto not_allowed;
|
||||
subscribe_failed:
|
||||
pw_log_error("Failed to subscribe to Request signal: %s", error.message);
|
||||
dbus_error_free(&error);
|
||||
goto not_allowed;
|
||||
not_allowed:
|
||||
pw_core_notify_error(client->core_resource,
|
||||
resource->id, SPA_RESULT_NO_PERMISSION, "not allowed");
|
||||
return;
|
||||
}
|
||||
|
||||
static void
|
||||
do_create_link(void *object,
|
||||
uint32_t output_node_id,
|
||||
uint32_t output_port_id,
|
||||
uint32_t input_node_id,
|
||||
uint32_t input_port_id,
|
||||
const struct spa_format *filter,
|
||||
const struct spa_dict *props,
|
||||
uint32_t new_id)
|
||||
{
|
||||
struct pw_resource *resource = object;
|
||||
struct client_info *cinfo = resource->access_private;
|
||||
struct pw_client *client = resource->client;
|
||||
|
||||
if (cinfo->is_sandboxed) {
|
||||
pw_core_notify_error(client->core_resource,
|
||||
resource->id, SPA_RESULT_NO_PERMISSION, "not allowed");
|
||||
return;
|
||||
}
|
||||
cinfo->old_methods->create_link (object,
|
||||
output_node_id,
|
||||
output_port_id,
|
||||
input_node_id,
|
||||
input_port_id,
|
||||
filter,
|
||||
props,
|
||||
new_id);
|
||||
}
|
||||
|
||||
static void on_resource_impl(struct pw_listener *listener,
|
||||
struct pw_client *client,
|
||||
struct pw_resource *resource)
|
||||
{
|
||||
struct client_info *cinfo = SPA_CONTAINER_OF(listener, struct client_info, resource_impl);
|
||||
struct impl *impl = cinfo->impl;
|
||||
|
||||
if (resource->type == impl->core->type.core) {
|
||||
cinfo->old_methods = resource->implementation;
|
||||
cinfo->core_methods = *cinfo->old_methods;
|
||||
resource->implementation = &cinfo->core_methods;
|
||||
resource->access_private = cinfo;
|
||||
cinfo->core_methods.create_node = do_create_node;
|
||||
cinfo->core_methods.create_link = do_create_link;
|
||||
}
|
||||
}
|
||||
|
||||
static void
|
||||
on_global_added(struct pw_listener *listener, struct pw_core *core, struct pw_global *global)
|
||||
{
|
||||
struct impl *impl = SPA_CONTAINER_OF(listener, struct impl, global_added);
|
||||
|
||||
if (global->type == impl->core->type.client) {
|
||||
struct pw_client *client = global->object;
|
||||
struct client_info *cinfo;
|
||||
|
||||
cinfo = calloc(1, sizeof(struct client_info));
|
||||
cinfo->impl = impl;
|
||||
cinfo->client = client;
|
||||
cinfo->is_sandboxed = client_is_sandboxed(client);
|
||||
spa_list_init(&cinfo->async_pending);
|
||||
|
||||
pw_signal_add(&client->resource_impl, &cinfo->resource_impl, on_resource_impl);
|
||||
|
||||
spa_list_insert(impl->client_list.prev, &cinfo->link);
|
||||
|
||||
pw_log_debug("module %p: client %p added", impl, client);
|
||||
}
|
||||
}
|
||||
|
||||
static void
|
||||
on_global_removed(struct pw_listener *listener, struct pw_core *core, struct pw_global *global)
|
||||
{
|
||||
struct impl *impl = SPA_CONTAINER_OF(listener, struct impl, global_removed);
|
||||
|
||||
if (global->type == impl->core->type.client) {
|
||||
struct pw_client *client = global->object;
|
||||
struct client_info *cinfo;
|
||||
|
||||
if ((cinfo = find_client_info(impl, client)))
|
||||
client_info_free(cinfo);
|
||||
|
||||
pw_log_debug("module %p: client %p removed", impl, client);
|
||||
}
|
||||
}
|
||||
|
||||
static void dispatch_cb(struct spa_loop_utils *utils, struct spa_source *source, void *userdata)
|
||||
{
|
||||
struct impl *impl = userdata;
|
||||
|
||||
if (dbus_connection_dispatch(impl->bus) == DBUS_DISPATCH_COMPLETE)
|
||||
pw_loop_enable_idle(impl->core->main_loop, source, false);
|
||||
}
|
||||
|
||||
static void dispatch_status(DBusConnection *conn, DBusDispatchStatus status, void *userdata)
|
||||
{
|
||||
struct impl *impl = userdata;
|
||||
|
||||
pw_loop_enable_idle(impl->core->main_loop,
|
||||
impl->dispatch_event, status == DBUS_DISPATCH_COMPLETE ? false : true);
|
||||
}
|
||||
|
||||
static inline enum spa_io dbus_to_io(DBusWatch *watch)
|
||||
{
|
||||
enum spa_io mask;
|
||||
unsigned int flags;
|
||||
|
||||
/* no watch flags for disabled watches */
|
||||
if (!dbus_watch_get_enabled(watch))
|
||||
return 0;
|
||||
|
||||
flags = dbus_watch_get_flags(watch);
|
||||
mask = SPA_IO_HUP | SPA_IO_ERR;
|
||||
|
||||
if (flags & DBUS_WATCH_READABLE)
|
||||
mask |= SPA_IO_IN;
|
||||
if (flags & DBUS_WATCH_WRITABLE)
|
||||
mask |= SPA_IO_OUT;
|
||||
|
||||
return mask;
|
||||
}
|
||||
|
||||
static inline unsigned int io_to_dbus(enum spa_io mask)
|
||||
{
|
||||
unsigned int flags = 0;
|
||||
|
||||
if (mask & SPA_IO_IN)
|
||||
flags |= DBUS_WATCH_READABLE;
|
||||
if (mask & SPA_IO_OUT)
|
||||
flags |= DBUS_WATCH_WRITABLE;
|
||||
if (mask & SPA_IO_HUP)
|
||||
flags |= DBUS_WATCH_HANGUP;
|
||||
if (mask & SPA_IO_ERR)
|
||||
flags |= DBUS_WATCH_ERROR;
|
||||
return flags;
|
||||
}
|
||||
|
||||
static void
|
||||
handle_io_event(struct spa_loop_utils *utils,
|
||||
struct spa_source *source, int fd, enum spa_io mask, void *userdata)
|
||||
{
|
||||
DBusWatch *watch = userdata;
|
||||
|
||||
if (!dbus_watch_get_enabled(watch)) {
|
||||
pw_log_warn("Asked to handle disabled watch: %p %i", (void *) watch, fd);
|
||||
return;
|
||||
}
|
||||
dbus_watch_handle(watch, io_to_dbus(mask));
|
||||
}
|
||||
|
||||
static dbus_bool_t add_watch(DBusWatch *watch, void *userdata)
|
||||
{
|
||||
struct impl *impl = userdata;
|
||||
struct spa_source *source;
|
||||
|
||||
pw_log_debug("add watch %p %d", watch, dbus_watch_get_unix_fd(watch));
|
||||
|
||||
/* we dup because dbus tends to add the same fd multiple times and our epoll
|
||||
* implementation does not like that */
|
||||
source = pw_loop_add_io(impl->core->main_loop,
|
||||
dup(dbus_watch_get_unix_fd(watch)),
|
||||
dbus_to_io(watch), true, handle_io_event, watch);
|
||||
|
||||
dbus_watch_set_data(watch, source, NULL);
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
static void remove_watch(DBusWatch *watch, void *userdata)
|
||||
{
|
||||
struct impl *impl = userdata;
|
||||
struct spa_source *source;
|
||||
|
||||
if ((source = dbus_watch_get_data(watch)))
|
||||
pw_loop_destroy_source(impl->core->main_loop, source);
|
||||
}
|
||||
|
||||
static void toggle_watch(DBusWatch *watch, void *userdata)
|
||||
{
|
||||
struct impl *impl = userdata;
|
||||
struct spa_source *source;
|
||||
|
||||
source = dbus_watch_get_data(watch);
|
||||
|
||||
pw_loop_update_io(impl->core->main_loop, source, dbus_to_io(watch));
|
||||
}
|
||||
|
||||
static void
|
||||
handle_timer_event(struct spa_loop_utils *utils, struct spa_source *source, void *userdata)
|
||||
{
|
||||
DBusTimeout *timeout = userdata;
|
||||
uint64_t t;
|
||||
struct timespec ts;
|
||||
|
||||
if (dbus_timeout_get_enabled(timeout)) {
|
||||
t = dbus_timeout_get_interval(timeout) * SPA_NSEC_PER_MSEC;
|
||||
ts.tv_sec = t / SPA_NSEC_PER_SEC;
|
||||
ts.tv_nsec = t % SPA_NSEC_PER_SEC;
|
||||
spa_loop_utils_update_timer(utils, source, &ts, NULL, false);
|
||||
|
||||
dbus_timeout_handle(timeout);
|
||||
}
|
||||
}
|
||||
|
||||
static dbus_bool_t add_timeout(DBusTimeout *timeout, void *userdata)
|
||||
{
|
||||
struct impl *impl = userdata;
|
||||
struct spa_source *source;
|
||||
struct timespec ts;
|
||||
uint64_t t;
|
||||
|
||||
if (!dbus_timeout_get_enabled(timeout))
|
||||
return FALSE;
|
||||
|
||||
source = pw_loop_add_timer(impl->core->main_loop, handle_timer_event, timeout);
|
||||
|
||||
dbus_timeout_set_data(timeout, source, NULL);
|
||||
|
||||
t = dbus_timeout_get_interval(timeout) * SPA_NSEC_PER_MSEC;
|
||||
ts.tv_sec = t / SPA_NSEC_PER_SEC;
|
||||
ts.tv_nsec = t % SPA_NSEC_PER_SEC;
|
||||
pw_loop_update_timer(impl->core->main_loop, source, &ts, NULL, false);
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
static void remove_timeout(DBusTimeout *timeout, void *userdata)
|
||||
{
|
||||
struct impl *impl = userdata;
|
||||
struct spa_source *source;
|
||||
|
||||
if ((source = dbus_timeout_get_data(timeout)))
|
||||
pw_loop_destroy_source(impl->core->main_loop, source);
|
||||
}
|
||||
|
||||
static void toggle_timeout(DBusTimeout *timeout, void *userdata)
|
||||
{
|
||||
struct impl *impl = userdata;
|
||||
struct spa_source *source;
|
||||
struct timespec ts, *tsp;
|
||||
|
||||
source = dbus_timeout_get_data(timeout);
|
||||
|
||||
if (dbus_timeout_get_enabled(timeout)) {
|
||||
uint64_t t = dbus_timeout_get_interval(timeout) * SPA_NSEC_PER_MSEC;
|
||||
ts.tv_sec = t / SPA_NSEC_PER_SEC;
|
||||
ts.tv_nsec = t % SPA_NSEC_PER_SEC;
|
||||
tsp = &ts;
|
||||
} else {
|
||||
tsp = NULL;
|
||||
}
|
||||
pw_loop_update_timer(impl->core->main_loop, source, tsp, NULL, false);
|
||||
}
|
||||
|
||||
static void wakeup_main(void *userdata)
|
||||
{
|
||||
struct impl *impl = userdata;
|
||||
|
||||
pw_loop_enable_idle(impl->core->main_loop, impl->dispatch_event, true);
|
||||
}
|
||||
|
||||
static struct impl *module_new(struct pw_core *core, struct pw_properties *properties)
|
||||
{
|
||||
struct impl *impl;
|
||||
DBusError error;
|
||||
|
||||
dbus_error_init(&error);
|
||||
|
||||
impl = calloc(1, sizeof(struct impl));
|
||||
pw_log_debug("module %p: new", impl);
|
||||
|
||||
impl->core = core;
|
||||
impl->properties = properties;
|
||||
|
||||
impl->bus = dbus_bus_get_private(DBUS_BUS_SESSION, &error);
|
||||
if (impl->bus == NULL)
|
||||
goto error;
|
||||
|
||||
impl->dispatch_event = pw_loop_add_idle(core->main_loop, false, dispatch_cb, impl);
|
||||
|
||||
dbus_connection_set_exit_on_disconnect(impl->bus, false);
|
||||
dbus_connection_set_dispatch_status_function(impl->bus, dispatch_status, impl, NULL);
|
||||
dbus_connection_set_watch_functions(impl->bus, add_watch, remove_watch, toggle_watch, impl,
|
||||
NULL);
|
||||
dbus_connection_set_timeout_functions(impl->bus, add_timeout, remove_timeout,
|
||||
toggle_timeout, impl, NULL);
|
||||
dbus_connection_set_wakeup_main_function(impl->bus, wakeup_main, impl, NULL);
|
||||
|
||||
spa_list_init(&impl->client_list);
|
||||
|
||||
pw_signal_add(&core->global_added, &impl->global_added, on_global_added);
|
||||
pw_signal_add(&core->global_removed, &impl->global_removed, on_global_removed);
|
||||
core->global_filter = do_global_filter;
|
||||
core->global_filter_data = impl;
|
||||
|
||||
return impl;
|
||||
|
||||
error:
|
||||
pw_log_error("Failed to connect to system bus: %s", error.message);
|
||||
dbus_error_free(&error);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
#if 0
|
||||
static void module_destroy(struct impl *impl)
|
||||
{
|
||||
pw_log_debug("module %p: destroy", impl);
|
||||
|
||||
dbus_connection_close(impl->bus);
|
||||
dbus_connection_unref(impl->bus);
|
||||
free(impl);
|
||||
}
|
||||
#endif
|
||||
|
||||
bool pipewire__module_init(struct pw_module *module, const char *args)
|
||||
{
|
||||
module_new(module->core, NULL);
|
||||
return true;
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue