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link: listen to permission changes on the ports

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If one of the ports becomes invisible to a client, hide the link.
If one of the ports is owned by a client and the peer port becomes
invisible for the client, destroy the link.
This commit is contained in:
Wim Taymans 2019-05-14 12:09:34 +02:00
parent d7c7e9bf6f
commit 2889db8efb
1 changed files with 35 additions and 9 deletions
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44
src/pipewire/link.c
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@ -1194,19 +1194,45 @@ check_permission(struct pw_core *core,
return 0;
}
static void global_permissions_changed(void *data,
static void permissions_changed(struct pw_link *this, struct pw_port *other,
struct pw_client *client, uint32_t old, uint32_t new)
{
uint32_t perm;
perm = pw_global_get_permissions(other->global, client);
old &= perm;
new &= perm;
pw_log_debug("link %p: permissions changed %08x -> %08x", this, old, new);
if (check_permission(this->core, this->output, this->input, this->properties) < 0) {
pw_link_destroy(this);
} else {
pw_global_update_permissions(this->global, client, old, new);
}
}
static void output_permissions_changed(void *data,
struct pw_client *client, uint32_t old, uint32_t new)
{
struct pw_link *this = data;
pw_log_debug("link %p: permissions changed", this);
if (check_permission(this->core, this->output, this->input, this->properties) < 0)
pw_link_destroy(this);
permissions_changed(this, this->input, client, old, new);
}
static const struct pw_global_events global_node_events = {
static const struct pw_global_events output_global_events = {
PW_VERSION_GLOBAL_EVENTS,
.permissions_changed = global_permissions_changed,
.permissions_changed = output_permissions_changed,
};
static void input_permissions_changed(void *data,
struct pw_client *client, uint32_t old, uint32_t new)
{
struct pw_link *this = data;
permissions_changed(this, this->output, client, old, new);
}
static const struct pw_global_events input_global_events = {
PW_VERSION_GLOBAL_EVENTS,
.permissions_changed = input_permissions_changed,
};
SPA_EXPORT
@ -1270,10 +1296,10 @@ struct pw_link *pw_link_new(struct pw_core *core,
pw_port_add_listener(input, &impl->input_port_listener, &input_port_events, impl);
pw_node_add_listener(input_node, &impl->input_node_listener, &input_node_events, impl);
pw_global_add_listener(input_node->global, &impl->input_global_listener, &global_node_events, impl);
pw_global_add_listener(input->global, &impl->input_global_listener, &input_global_events, impl);
pw_port_add_listener(output, &impl->output_port_listener, &output_port_events, impl);
pw_node_add_listener(output_node, &impl->output_node_listener, &output_node_events, impl);
pw_global_add_listener(output_node->global, &impl->output_global_listener, &global_node_events, impl);
pw_global_add_listener(output->global, &impl->output_global_listener, &output_global_events, impl);
input_node->live = output_node->live;