mirror of
https://gitlab.freedesktop.org/pipewire/pipewire.git
synced 2025-11-05 13:30:02 -05:00
4cf59e3953
Rework the access checks. Add owner field to more objects to do access control checks Make sure the object global is set in the object before signaling the new global.
333 lines
9.2 KiB
C
333 lines
9.2 KiB
C
/* Pinos
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* Copyright (C) 2015 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 <dlfcn.h>
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#include <errno.h>
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#include <poll.h>
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#include <string.h>
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#include <fcntl.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <sys/mman.h>
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#include <spa/include/spa/node.h>
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#include <spa/include/spa/monitor.h>
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#include <spa/include/spa/pod-iter.h>
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#include <pinos/client/log.h>
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#include <pinos/server/node.h>
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#include "spa-monitor.h"
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typedef struct
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{
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char *id;
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SpaList link;
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PinosNode *node;
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} PinosSpaMonitorItem;
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typedef struct
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{
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PinosSpaMonitor this;
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PinosCore *core;
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void *hnd;
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SpaList item_list;
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} PinosSpaMonitorImpl;
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static void
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add_item (PinosSpaMonitor *this, SpaMonitorItem *item)
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{
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PinosSpaMonitorImpl *impl = SPA_CONTAINER_OF (this, PinosSpaMonitorImpl, this);
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SpaResult res;
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SpaHandle *handle;
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PinosSpaMonitorItem *mitem;
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void *node_iface;
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void *clock_iface;
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PinosProperties *props = NULL;
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const char *name, *id, *klass;
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SpaHandleFactory *factory;
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SpaPOD *info = NULL;
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spa_pod_object_query (item,
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impl->core->type.monitor.name, SPA_POD_TYPE_STRING, &name,
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impl->core->type.monitor.id, SPA_POD_TYPE_STRING, &id,
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impl->core->type.monitor.klass, SPA_POD_TYPE_STRING, &klass,
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impl->core->type.monitor.factory, SPA_POD_TYPE_POINTER, &factory,
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impl->core->type.monitor.info, SPA_POD_TYPE_STRUCT, &info,
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0);
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pinos_log_debug ("monitor %p: add: \"%s\" (%s)", this, name, id);
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props = pinos_properties_new (NULL, NULL);
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if (info) {
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SpaPODIter it;
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spa_pod_iter_pod (&it, info);
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while (true) {
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const char *key, *val;
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if (!spa_pod_iter_get (&it, SPA_POD_TYPE_STRING, &key, SPA_POD_TYPE_STRING, &val, 0))
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break;
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pinos_properties_set (props, key, val);
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}
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}
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pinos_properties_set (props, "media.class", klass);
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handle = calloc (1, factory->size);
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if ((res = spa_handle_factory_init (factory,
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handle,
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&props->dict,
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impl->core->support,
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impl->core->n_support)) < 0) {
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pinos_log_error ("can't make factory instance: %d", res);
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return;
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}
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if ((res = spa_handle_get_interface (handle, impl->core->type.spa_node, &node_iface)) < 0) {
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pinos_log_error ("can't get NODE interface: %d", res);
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return;
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}
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if ((res = spa_handle_get_interface (handle, impl->core->type.spa_clock, &clock_iface)) < 0) {
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pinos_log_info ("no CLOCK interface: %d", res);
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}
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mitem = calloc (1, sizeof (PinosSpaMonitorItem));
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mitem->id = strdup (id);
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mitem->node = pinos_node_new (impl->core,
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NULL,
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name,
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false,
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node_iface,
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clock_iface,
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props);
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spa_list_insert (impl->item_list.prev, &mitem->link);
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}
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static PinosSpaMonitorItem *
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find_item (PinosSpaMonitor *this,
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const char *id)
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{
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PinosSpaMonitorImpl *impl = SPA_CONTAINER_OF (this, PinosSpaMonitorImpl, this);
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PinosSpaMonitorItem *mitem;
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spa_list_for_each (mitem, &impl->item_list, link) {
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if (strcmp (mitem->id, id) == 0) {
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return mitem;
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}
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}
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return NULL;
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}
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void
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destroy_item (PinosSpaMonitorItem *mitem)
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{
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pinos_node_destroy (mitem->node);
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spa_list_remove (&mitem->link);
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free (mitem->id);
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free (mitem);
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}
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static void
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remove_item (PinosSpaMonitor *this, SpaMonitorItem *item)
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{
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PinosSpaMonitorImpl *impl = SPA_CONTAINER_OF (this, PinosSpaMonitorImpl, this);
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PinosSpaMonitorItem *mitem;
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const char *name, *id;
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spa_pod_object_query (item,
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impl->core->type.monitor.name, SPA_POD_TYPE_STRING, &name,
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impl->core->type.monitor.id, SPA_POD_TYPE_STRING, &id,
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0);
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pinos_log_debug ("monitor %p: remove: \"%s\" (%s)", this, name, id);
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mitem = find_item (this, id);
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if (mitem)
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destroy_item (mitem);
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}
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static void
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on_monitor_event (SpaMonitor *monitor,
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SpaEventMonitor *event,
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void *user_data)
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{
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PinosSpaMonitor *this = user_data;
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PinosSpaMonitorImpl *impl = SPA_CONTAINER_OF (this, PinosSpaMonitorImpl, this);
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if (SPA_EVENT_TYPE (event) == impl->core->type.monitor.Added) {
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SpaMonitorItem *item = SPA_POD_CONTENTS (SpaEvent, event);
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add_item (this, item);
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}
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else if (SPA_EVENT_TYPE (event) == impl->core->type.monitor.Removed) {
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SpaMonitorItem *item = SPA_POD_CONTENTS (SpaEvent, event);
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remove_item (this, item);
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}
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else if (SPA_EVENT_TYPE (event) == impl->core->type.monitor.Changed) {
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SpaMonitorItem *item = SPA_POD_CONTENTS (SpaEvent, event);
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const char *name;
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spa_pod_object_query (item,
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impl->core->type.monitor.name, SPA_POD_TYPE_STRING, &name,
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0);
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pinos_log_debug ("monitor %p: changed: \"%s\"", this, name);
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}
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}
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static void
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update_monitor (PinosCore *core,
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const char *name)
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{
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const char *monitors;
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SpaDictItem item;
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SpaDict dict = SPA_DICT_INIT(1, &item);
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if (core->properties)
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monitors = pinos_properties_get (core->properties, "monitors");
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else
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monitors = NULL;
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item.key = "monitors";
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if (monitors == NULL)
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item.value = name;
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else
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asprintf ((char**)&item.value, "%s,%s", monitors, name);
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pinos_core_update_properties (core, &dict);
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if (monitors != NULL)
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free ((void*)item.value);
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}
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PinosSpaMonitor *
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pinos_spa_monitor_load (PinosCore *core,
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const char *lib,
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const char *factory_name,
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const char *system_name)
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{
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PinosSpaMonitorImpl *impl;
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PinosSpaMonitor *this;
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SpaHandle *handle;
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SpaResult res;
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void *iface;
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void *hnd;
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uint32_t index;
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SpaEnumHandleFactoryFunc enum_func;
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const SpaHandleFactory *factory;
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if ((hnd = dlopen (lib, RTLD_NOW)) == NULL) {
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pinos_log_error ("can't load %s: %s", lib, dlerror());
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return NULL;
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}
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if ((enum_func = dlsym (hnd, "spa_enum_handle_factory")) == NULL) {
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pinos_log_error ("can't find enum function");
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goto no_symbol;
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}
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for (index = 0;; index++) {
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if ((res = enum_func (&factory, index)) < 0) {
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if (res != SPA_RESULT_ENUM_END)
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pinos_log_error ("can't enumerate factories: %d", res);
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goto enum_failed;
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}
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if (strcmp (factory->name, factory_name) == 0)
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break;
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}
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handle = calloc (1, factory->size);
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if ((res = spa_handle_factory_init (factory,
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handle,
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NULL,
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core->support,
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core->n_support)) < 0) {
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pinos_log_error ("can't make factory instance: %d", res);
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goto init_failed;
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}
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if ((res = spa_handle_get_interface (handle,
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core->type.spa_monitor,
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&iface)) < 0) {
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free (handle);
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pinos_log_error ("can't get MONITOR interface: %d", res);
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goto interface_failed;
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}
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impl = calloc (1, sizeof (PinosSpaMonitorImpl));
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impl->core = core;
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impl->hnd = hnd;
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this = &impl->this;
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pinos_signal_init (&this->destroy_signal);
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this->monitor = iface;
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this->lib = strdup (lib);
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this->factory_name = strdup (factory_name);
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this->system_name = strdup (system_name);
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this->handle = handle;
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update_monitor (core, this->system_name);
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spa_list_init (&impl->item_list);
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for (index = 0;; index++) {
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SpaMonitorItem *item;
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SpaResult res;
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if ((res = spa_monitor_enum_items (this->monitor, &item, index)) < 0) {
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if (res != SPA_RESULT_ENUM_END)
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pinos_log_debug ("spa_monitor_enum_items: got error %d\n", res);
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break;
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}
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add_item (this, item);
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}
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spa_monitor_set_event_callback (this->monitor, on_monitor_event, this);
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return this;
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interface_failed:
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spa_handle_clear (handle);
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init_failed:
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free (handle);
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enum_failed:
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no_symbol:
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dlclose (hnd);
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return NULL;
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}
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void
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pinos_spa_monitor_destroy (PinosSpaMonitor * monitor)
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{
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PinosSpaMonitorImpl *impl = SPA_CONTAINER_OF (monitor, PinosSpaMonitorImpl, this);
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PinosSpaMonitorItem *mitem, *tmp;
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pinos_log_debug ("spa-monitor %p: dispose", impl);
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pinos_signal_emit (&monitor->destroy_signal, monitor);
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spa_list_for_each_safe (mitem, tmp, &impl->item_list, link)
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destroy_item (mitem);
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spa_handle_clear (monitor->handle);
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free (monitor->handle);
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free (monitor->lib);
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free (monitor->factory_name);
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free (monitor->system_name);
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dlclose (impl->hnd);
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free (impl);
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}
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