diff options
Diffstat (limited to '')
| -rw-r--r-- | src/daemon/server-lookup.c | 492 |
1 files changed, 492 insertions, 0 deletions
diff --git a/src/daemon/server-lookup.c b/src/daemon/server-lookup.c new file mode 100644 index 0000000..ca390c7 --- /dev/null +++ b/src/daemon/server-lookup.c @@ -0,0 +1,492 @@ +/*** + This file is part of PulseAudio. + + Copyright 2009 Tanu Kaskinen + + PulseAudio is free software; you can redistribute it and/or modify + it under the terms of the GNU Lesser General Public License as published + by the Free Software Foundation; either version 2.1 of the License, + or (at your option) any later version. + + PulseAudio is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + General Public License for more details. + + You should have received a copy of the GNU Lesser General Public License + along with PulseAudio; if not, see <http://www.gnu.org/licenses/>. +***/ + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif + +#include <dbus/dbus.h> + +#include <pulse/client-conf.h> +#include <pulse/xmalloc.h> + +#include <pulsecore/core.h> +#include <pulsecore/core-util.h> +#include <pulsecore/dbus-shared.h> +#include <pulsecore/macro.h> +#include <pulsecore/protocol-dbus.h> + +#include "server-lookup.h" + +#define OBJECT_PATH "/org/pulseaudio/server_lookup1" +#define INTERFACE "org.PulseAudio.ServerLookup1" + +struct pa_dbusobj_server_lookup { + pa_core *core; + pa_dbus_connection *conn; + bool path_registered; +}; + +static const char introspection[] = + DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE + "<node>" + " <!-- If you are looking for documentation make sure to check out\n" + " http://www.freedesktop.org/wiki/Software/PulseAudio/Documentation/Developer/Clients/DBus/ -->\n" + " <interface name=\"" INTERFACE "\">\n" + " <property name=\"Address\" type=\"s\" access=\"read\"/>\n" + " </interface>\n" + " <interface name=\"" DBUS_INTERFACE_INTROSPECTABLE "\">\n" + " <method name=\"Introspect\">\n" + " <arg name=\"data\" type=\"s\" direction=\"out\"/>\n" + " </method>\n" + " </interface>\n" + " <interface name=\"" DBUS_INTERFACE_PROPERTIES "\">\n" + " <method name=\"Get\">\n" + " <arg name=\"interface_name\" type=\"s\" direction=\"in\"/>\n" + " <arg name=\"property_name\" type=\"s\" direction=\"in\"/>\n" + " <arg name=\"value\" type=\"v\" direction=\"out\"/>\n" + " </method>\n" + " <method name=\"Set\">\n" + " <arg name=\"interface_name\" type=\"s\" direction=\"in\"/>\n" + " <arg name=\"property_name\" type=\"s\" direction=\"in\"/>\n" + " <arg name=\"value\" type=\"v\" direction=\"in\"/>\n" + " </method>\n" + " <method name=\"GetAll\">\n" + " <arg name=\"interface_name\" type=\"s\" direction=\"in\"/>\n" + " <arg name=\"props\" type=\"a{sv}\" direction=\"out\"/>\n" + " </method>\n" + " </interface>\n" + "</node>\n"; + +static void unregister_cb(DBusConnection *conn, void *user_data) { + pa_dbusobj_server_lookup *sl = user_data; + + pa_assert(sl); + pa_assert(sl->path_registered); + + sl->path_registered = false; +} + +static DBusHandlerResult handle_introspect(DBusConnection *conn, DBusMessage *msg, pa_dbusobj_server_lookup *sl) { + DBusHandlerResult r = DBUS_HANDLER_RESULT_HANDLED; + const char *i = introspection; + DBusMessage *reply = NULL; + + pa_assert(conn); + pa_assert(msg); + + if (!(reply = dbus_message_new_method_return(msg))) { + r = DBUS_HANDLER_RESULT_NOT_YET_HANDLED; + goto finish; + } + if (!dbus_message_append_args(reply, DBUS_TYPE_STRING, &i, DBUS_TYPE_INVALID)) { + r = DBUS_HANDLER_RESULT_NOT_YET_HANDLED; + goto finish; + } + if (!dbus_connection_send(conn, reply, NULL)) { + r = DBUS_HANDLER_RESULT_NEED_MEMORY; + goto finish; + } + +finish: + if (reply) + dbus_message_unref(reply); + + return r; +} + +enum get_address_result_t { + SUCCESS, + SERVER_FROM_TYPE_FAILED +}; + +/* Caller frees the returned address. */ +static enum get_address_result_t get_address(pa_server_type_t server_type, char **address) { + enum get_address_result_t r = SUCCESS; + pa_client_conf *conf = pa_client_conf_new(); + + *address = NULL; + + pa_client_conf_load(conf, false, false); + + if (conf->default_dbus_server) + *address = pa_xstrdup(conf->default_dbus_server); + else if (!(*address = pa_get_dbus_address_from_server_type(server_type))) { + r = SERVER_FROM_TYPE_FAILED; + goto finish; + } + +finish: + pa_client_conf_free(conf); + return r; +} + +static DBusHandlerResult handle_get_address(DBusConnection *conn, DBusMessage *msg, pa_dbusobj_server_lookup *sl) { + DBusHandlerResult r = DBUS_HANDLER_RESULT_HANDLED; + DBusMessage *reply = NULL; + char *address = NULL; + DBusMessageIter msg_iter; + DBusMessageIter variant_iter; + + pa_assert(conn); + pa_assert(msg); + pa_assert(sl); + + switch (get_address(sl->core->server_type, &address)) { + case SUCCESS: + if (!(reply = dbus_message_new_method_return(msg))) { + r = DBUS_HANDLER_RESULT_NEED_MEMORY; + goto finish; + } + dbus_message_iter_init_append(reply, &msg_iter); + if (!dbus_message_iter_open_container(&msg_iter, DBUS_TYPE_VARIANT, "s", &variant_iter)) { + r = DBUS_HANDLER_RESULT_NEED_MEMORY; + goto finish; + } + if (!dbus_message_iter_append_basic(&variant_iter, DBUS_TYPE_STRING, &address)) { + r = DBUS_HANDLER_RESULT_NEED_MEMORY; + goto finish; + } + if (!dbus_message_iter_close_container(&msg_iter, &variant_iter)) { + r = DBUS_HANDLER_RESULT_NEED_MEMORY; + goto finish; + } + if (!dbus_connection_send(conn, reply, NULL)) { + r = DBUS_HANDLER_RESULT_NEED_MEMORY; + goto finish; + } + r = DBUS_HANDLER_RESULT_HANDLED; + goto finish; + + case SERVER_FROM_TYPE_FAILED: + if (!(reply = dbus_message_new_error(msg, DBUS_ERROR_FAILED, "PulseAudio internal error: get_dbus_server_from_type() failed."))) { + r = DBUS_HANDLER_RESULT_NOT_YET_HANDLED; + goto finish; + } + if (!dbus_connection_send(conn, reply, NULL)) { + r = DBUS_HANDLER_RESULT_NEED_MEMORY; + goto finish; + } + r = DBUS_HANDLER_RESULT_HANDLED; + goto finish; + + default: + pa_assert_not_reached(); + } + +finish: + pa_xfree(address); + if (reply) + dbus_message_unref(reply); + + return r; +} + +static DBusHandlerResult handle_get(DBusConnection *conn, DBusMessage *msg, pa_dbusobj_server_lookup *sl) { + DBusHandlerResult r = DBUS_HANDLER_RESULT_HANDLED; + const char* interface; + const char* property; + DBusMessage *reply = NULL; + + pa_assert(conn); + pa_assert(msg); + pa_assert(sl); + + if (!dbus_message_get_args(msg, NULL, DBUS_TYPE_STRING, &interface, DBUS_TYPE_STRING, &property, DBUS_TYPE_INVALID)) { + if (!(reply = dbus_message_new_error(msg, DBUS_ERROR_INVALID_ARGS, "Invalid arguments"))) { + r = DBUS_HANDLER_RESULT_NOT_YET_HANDLED; + goto finish; + } + if (!dbus_connection_send(conn, reply, NULL)) { + r = DBUS_HANDLER_RESULT_NEED_MEMORY; + goto finish; + } + r = DBUS_HANDLER_RESULT_HANDLED; + goto finish; + } + + if (*interface && !pa_streq(interface, INTERFACE)) { + r = DBUS_HANDLER_RESULT_NOT_YET_HANDLED; + goto finish; + } + + if (!pa_streq(property, "Address")) { + if (!(reply = dbus_message_new_error_printf(msg, PA_DBUS_ERROR_NO_SUCH_PROPERTY, "%s: No such property", property))) { + r = DBUS_HANDLER_RESULT_NOT_YET_HANDLED; + goto finish; + } + if (!dbus_connection_send(conn, reply, NULL)) { + r = DBUS_HANDLER_RESULT_NEED_MEMORY; + goto finish; + } + r = DBUS_HANDLER_RESULT_HANDLED; + goto finish; + } + + r = handle_get_address(conn, msg, sl); + +finish: + if (reply) + dbus_message_unref(reply); + + return r; +} + +static DBusHandlerResult handle_set(DBusConnection *conn, DBusMessage *msg, pa_dbusobj_server_lookup *sl) { + DBusHandlerResult r = DBUS_HANDLER_RESULT_HANDLED; + const char* interface; + const char* property; + DBusMessage *reply = NULL; + + pa_assert(conn); + pa_assert(msg); + pa_assert(sl); + + if (!dbus_message_get_args(msg, NULL, DBUS_TYPE_STRING, &interface, DBUS_TYPE_STRING, &property, DBUS_TYPE_INVALID)) { + if (!(reply = dbus_message_new_error(msg, DBUS_ERROR_INVALID_ARGS, "Invalid arguments"))) { + r = DBUS_HANDLER_RESULT_NOT_YET_HANDLED; + goto finish; + } + if (!dbus_connection_send(conn, reply, NULL)) { + r = DBUS_HANDLER_RESULT_NEED_MEMORY; + goto finish; + } + r = DBUS_HANDLER_RESULT_HANDLED; + goto finish; + } + + if (*interface && !pa_streq(interface, INTERFACE)) { + r = DBUS_HANDLER_RESULT_NOT_YET_HANDLED; + goto finish; + } + + if (!pa_streq(property, "Address")) { + if (!(reply = dbus_message_new_error_printf(msg, PA_DBUS_ERROR_NO_SUCH_PROPERTY, "%s: No such property", property))) { + r = DBUS_HANDLER_RESULT_NOT_YET_HANDLED; + goto finish; + } + if (!dbus_connection_send(conn, reply, NULL)) { + r = DBUS_HANDLER_RESULT_NEED_MEMORY; + goto finish; + } + r = DBUS_HANDLER_RESULT_HANDLED; + goto finish; + } + + if (!(reply = dbus_message_new_error_printf(msg, DBUS_ERROR_ACCESS_DENIED, "%s: Property not settable", property))) { + r = DBUS_HANDLER_RESULT_NOT_YET_HANDLED; + goto finish; + } + if (!dbus_connection_send(conn, reply, NULL)) { + r = DBUS_HANDLER_RESULT_NEED_MEMORY; + goto finish; + } + r = DBUS_HANDLER_RESULT_HANDLED; + +finish: + if (reply) + dbus_message_unref(reply); + + return r; +} + +static DBusHandlerResult handle_get_all(DBusConnection *conn, DBusMessage *msg, pa_dbusobj_server_lookup *sl) { + DBusHandlerResult r = DBUS_HANDLER_RESULT_HANDLED; + DBusMessage *reply = NULL; + const char *property = "Address"; + char *interface = NULL; + char *address = NULL; + DBusMessageIter msg_iter; + DBusMessageIter dict_iter; + DBusMessageIter dict_entry_iter; + DBusMessageIter variant_iter; + + pa_assert(conn); + pa_assert(msg); + pa_assert(sl); + + if (!dbus_message_get_args(msg, NULL, DBUS_TYPE_STRING, &interface, DBUS_TYPE_INVALID)) { + if (!(reply = dbus_message_new_error(msg, DBUS_ERROR_INVALID_ARGS, "Invalid arguments"))) { + r = DBUS_HANDLER_RESULT_NOT_YET_HANDLED; + goto finish; + } + if (!dbus_connection_send(conn, reply, NULL)) { + r = DBUS_HANDLER_RESULT_NEED_MEMORY; + goto finish; + } + r = DBUS_HANDLER_RESULT_HANDLED; + goto finish; + } + + switch (get_address(sl->core->server_type, &address)) { + case SUCCESS: + if (!(reply = dbus_message_new_method_return(msg))) { + r = DBUS_HANDLER_RESULT_NEED_MEMORY; + goto finish; + } + dbus_message_iter_init_append(reply, &msg_iter); + if (!dbus_message_iter_open_container(&msg_iter, DBUS_TYPE_ARRAY, "{sv}", &dict_iter)) { + r = DBUS_HANDLER_RESULT_NEED_MEMORY; + goto finish; + } + if (!dbus_message_iter_open_container(&dict_iter, DBUS_TYPE_DICT_ENTRY, NULL, &dict_entry_iter)) { + r = DBUS_HANDLER_RESULT_NEED_MEMORY; + goto finish; + } + if (!dbus_message_iter_append_basic(&dict_entry_iter, DBUS_TYPE_STRING, &property)) { + r = DBUS_HANDLER_RESULT_NEED_MEMORY; + goto finish; + } + if (!dbus_message_iter_open_container(&dict_entry_iter, DBUS_TYPE_VARIANT, "s", &variant_iter)) { + r = DBUS_HANDLER_RESULT_NEED_MEMORY; + goto finish; + } + if (!dbus_message_iter_append_basic(&variant_iter, DBUS_TYPE_STRING, &address)) { + r = DBUS_HANDLER_RESULT_NEED_MEMORY; + goto finish; + } + if (!dbus_message_iter_close_container(&dict_entry_iter, &variant_iter)) { + r = DBUS_HANDLER_RESULT_NEED_MEMORY; + goto finish; + } + if (!dbus_message_iter_close_container(&dict_iter, &dict_entry_iter)) { + r = DBUS_HANDLER_RESULT_NEED_MEMORY; + goto finish; + } + if (!dbus_message_iter_close_container(&msg_iter, &dict_iter)) { + r = DBUS_HANDLER_RESULT_NEED_MEMORY; + goto finish; + } + if (!dbus_connection_send(conn, reply, NULL)) { + r = DBUS_HANDLER_RESULT_NEED_MEMORY; + goto finish; + } + r = DBUS_HANDLER_RESULT_HANDLED; + goto finish; + + case SERVER_FROM_TYPE_FAILED: + if (!(reply = dbus_message_new_error(msg, DBUS_ERROR_FAILED, "PulseAudio internal error: get_dbus_server_from_type() failed."))) { + r = DBUS_HANDLER_RESULT_NOT_YET_HANDLED; + goto finish; + } + if (!dbus_connection_send(conn, reply, NULL)) { + r = DBUS_HANDLER_RESULT_NEED_MEMORY; + goto finish; + } + r = DBUS_HANDLER_RESULT_HANDLED; + goto finish; + + default: + pa_assert_not_reached(); + } + +finish: + pa_xfree(address); + if (reply) + dbus_message_unref(reply); + + return r; +} + +static DBusHandlerResult message_cb(DBusConnection *conn, DBusMessage *msg, void *user_data) { + pa_dbusobj_server_lookup *sl = user_data; + + pa_assert(conn); + pa_assert(msg); + pa_assert(sl); + + /* pa_log("Got message! type = %s path = %s iface = %s member = %s dest = %s", dbus_message_type_to_string(dbus_message_get_type(msg)), dbus_message_get_path(msg), dbus_message_get_interface(msg), dbus_message_get_member(msg), dbus_message_get_destination(msg)); */ + + if (dbus_message_get_type(msg) != DBUS_MESSAGE_TYPE_METHOD_CALL) + return DBUS_HANDLER_RESULT_NOT_YET_HANDLED; + + if (dbus_message_is_method_call(msg, DBUS_INTERFACE_INTROSPECTABLE, "Introspect") || + (!dbus_message_get_interface(msg) && dbus_message_has_member(msg, "Introspect"))) + return handle_introspect(conn, msg, sl); + + if (dbus_message_is_method_call(msg, DBUS_INTERFACE_PROPERTIES, "Get") || + (!dbus_message_get_interface(msg) && dbus_message_has_member(msg, "Get"))) + return handle_get(conn, msg, sl); + + if (dbus_message_is_method_call(msg, DBUS_INTERFACE_PROPERTIES, "Set") || + (!dbus_message_get_interface(msg) && dbus_message_has_member(msg, "Set"))) + return handle_set(conn, msg, sl); + + if (dbus_message_is_method_call(msg, DBUS_INTERFACE_PROPERTIES, "GetAll") || + (!dbus_message_get_interface(msg) && dbus_message_has_member(msg, "GetAll"))) + return handle_get_all(conn, msg, sl); + + return DBUS_HANDLER_RESULT_NOT_YET_HANDLED; +} + +static DBusObjectPathVTable vtable = { + .unregister_function = unregister_cb, + .message_function = message_cb, + .dbus_internal_pad1 = NULL, + .dbus_internal_pad2 = NULL, + .dbus_internal_pad3 = NULL, + .dbus_internal_pad4 = NULL +}; + +pa_dbusobj_server_lookup *pa_dbusobj_server_lookup_new(pa_core *c) { + pa_dbusobj_server_lookup *sl; + DBusError error; + + dbus_error_init(&error); + + sl = pa_xnew(pa_dbusobj_server_lookup, 1); + sl->core = c; + sl->path_registered = false; + + if (!(sl->conn = pa_dbus_bus_get(c, DBUS_BUS_SESSION, &error)) || dbus_error_is_set(&error)) { + pa_log_warn("Unable to contact D-Bus: %s: %s", error.name, error.message); + goto fail; + } + + if (!dbus_connection_register_object_path(pa_dbus_connection_get(sl->conn), OBJECT_PATH, &vtable, sl)) { + pa_log("dbus_connection_register_object_path() failed for " OBJECT_PATH "."); + goto fail; + } + + sl->path_registered = true; + + return sl; + +fail: + dbus_error_free(&error); + + pa_dbusobj_server_lookup_free(sl); + + return NULL; +} + +void pa_dbusobj_server_lookup_free(pa_dbusobj_server_lookup *sl) { + pa_assert(sl); + + if (sl->path_registered) { + pa_assert(sl->conn); + if (!dbus_connection_unregister_object_path(pa_dbus_connection_get(sl->conn), OBJECT_PATH)) + pa_log_debug("dbus_connection_unregister_object_path() failed for " OBJECT_PATH "."); + } + + if (sl->conn) + pa_dbus_connection_unref(sl->conn); + + pa_xfree(sl); +} |