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Keep D-Bus utility functions in a separate file
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| Original file line number | Diff line number | Diff line change |
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@@ -24,6 +24,7 @@ bluealsa_SOURCES = \ | |
| bluez.c \ | ||
| bluez-a2dp.c \ | ||
| bluez-iface.c \ | ||
| dbus.c \ | ||
| hci.c \ | ||
| sbc.c \ | ||
| sco.c \ | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,136 @@ | ||
| /* | ||
| * BlueALSA - dbus.c | ||
| * Copyright (c) 2016-2020 Arkadiusz Bokowy | ||
| * | ||
| * This file is a part of bluez-alsa. | ||
| * | ||
| * This project is licensed under the terms of the MIT license. | ||
| * | ||
| */ | ||
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| #include "dbus.h" | ||
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| #include <stdbool.h> | ||
| #include <string.h> | ||
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| /** | ||
| * Get managed objects of a given D-Bus service. | ||
| * | ||
| * @param conn D-Bus connection handler. | ||
| * @param name The name of known D-Bus service. | ||
| * @param path The path which shall be inspected. | ||
| * @param error NULL GError pointer. | ||
| * @return On success this function returns variant iterator with the list of | ||
| * managed D-Bus objects. After usage, the returned iterator shall be freed | ||
| * with g_variant_iter_free(). On error, NULL is returned. */ | ||
| GVariantIter *g_dbus_get_managed_objects(GDBusConnection *conn, | ||
| const char *name, const char *path, GError **error) { | ||
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| GDBusMessage *msg = NULL, *rep = NULL; | ||
| GVariantIter *objects = NULL; | ||
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| msg = g_dbus_message_new_method_call(name, path, | ||
| DBUS_IFACE_OBJECT_MANAGER, "GetManagedObjects"); | ||
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| if ((rep = g_dbus_connection_send_message_with_reply_sync(conn, msg, | ||
| G_DBUS_SEND_MESSAGE_FLAGS_NONE, -1, NULL, NULL, error)) == NULL) | ||
| goto fail; | ||
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| if (g_dbus_message_get_message_type(rep) == G_DBUS_MESSAGE_TYPE_ERROR) { | ||
| g_dbus_message_to_gerror(rep, error); | ||
| goto fail; | ||
| } | ||
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| g_variant_get(g_dbus_message_get_body(rep), "(a{oa{sa{sv}}})", &objects); | ||
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| fail: | ||
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| if (msg != NULL) | ||
| g_object_unref(msg); | ||
| if (rep != NULL) | ||
| g_object_unref(rep); | ||
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| return objects; | ||
| } | ||
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| /** | ||
| * Get a property of a given D-Bus interface. | ||
| * | ||
| * @param conn D-Bus connection handler. | ||
| * @param service Valid D-Bus service name. | ||
| * @param path Valid D-Bus object path. | ||
| * @param interface Interface with the given property. | ||
| * @param property The property name. | ||
| * @param error NULL GError pointer. | ||
| * @return On success this function returns variant containing property value. | ||
| * After usage, returned variant shall be freed with g_variant_unref(). On | ||
| * error, NULL is returned. */ | ||
| GVariant *g_dbus_get_property(GDBusConnection *conn, const char *service, | ||
| const char *path, const char *interface, const char *property, | ||
| GError **error) { | ||
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| GDBusMessage *msg = NULL, *rep = NULL; | ||
| GVariant *value = NULL; | ||
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| msg = g_dbus_message_new_method_call(service, path, DBUS_IFACE_PROPERTIES, "Get"); | ||
| g_dbus_message_set_body(msg, g_variant_new("(ss)", interface, property)); | ||
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| if ((rep = g_dbus_connection_send_message_with_reply_sync(conn, msg, | ||
| G_DBUS_SEND_MESSAGE_FLAGS_NONE, -1, NULL, NULL, error)) == NULL) | ||
| goto fail; | ||
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| if (g_dbus_message_get_message_type(rep) == G_DBUS_MESSAGE_TYPE_ERROR) { | ||
| g_dbus_message_to_gerror(rep, error); | ||
| goto fail; | ||
| } | ||
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| g_variant_get(g_dbus_message_get_body(rep), "(v)", &value); | ||
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| fail: | ||
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| if (msg != NULL) | ||
| g_object_unref(msg); | ||
| if (rep != NULL) | ||
| g_object_unref(rep); | ||
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| return value; | ||
| } | ||
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| /** | ||
| * Set a property of a given D-Bus interface. | ||
| * | ||
| * @param conn D-Bus connection handler. | ||
| * @param service Valid D-Bus service name. | ||
| * @param path Valid D-Bus object path. | ||
| * @param interface Interface with the given property. | ||
| * @param property The property name. | ||
| * @param value Variant containing property value. | ||
| * @param error NULL GError pointer. | ||
| * @return On success this function returns true. */ | ||
| bool g_dbus_set_property(GDBusConnection *conn, const char *service, | ||
| const char *path, const char *interface, const char *property, | ||
| const GVariant *value, GError **error) { | ||
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| GDBusMessage *msg = NULL, *rep = NULL; | ||
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| msg = g_dbus_message_new_method_call(service, path, DBUS_IFACE_PROPERTIES, "Set"); | ||
| g_dbus_message_set_body(msg, g_variant_new("(ssv)", interface, property, value)); | ||
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| if ((rep = g_dbus_connection_send_message_with_reply_sync(conn, msg, | ||
| G_DBUS_SEND_MESSAGE_FLAGS_NONE, -1, NULL, NULL, error)) == NULL) | ||
| goto fail; | ||
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| if (g_dbus_message_get_message_type(rep) == G_DBUS_MESSAGE_TYPE_ERROR) { | ||
| g_dbus_message_to_gerror(rep, error); | ||
| goto fail; | ||
| } | ||
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| fail: | ||
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| if (msg != NULL) | ||
| g_object_unref(msg); | ||
| if (rep != NULL) | ||
| g_object_unref(rep); | ||
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| return error == NULL; | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,35 @@ | ||
| /* | ||
| * BlueALSA - dbus.h | ||
| * Copyright (c) 2016-2020 Arkadiusz Bokowy | ||
| * | ||
| * This file is a part of bluez-alsa. | ||
| * | ||
| * This project is licensed under the terms of the MIT license. | ||
| * | ||
| */ | ||
|
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| #ifndef BLUEALSA_DBUS_H_ | ||
| #define BLUEALSA_DBUS_H_ | ||
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| #include <stdbool.h> | ||
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| #include <gio/gio.h> | ||
| #include <glib.h> | ||
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| #define DBUS_SERVICE "org.freedesktop.DBus" | ||
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| #define DBUS_IFACE_DBUS DBUS_SERVICE | ||
| #define DBUS_IFACE_OBJECT_MANAGER DBUS_SERVICE ".ObjectManager" | ||
| #define DBUS_IFACE_PROPERTIES DBUS_SERVICE ".Properties" | ||
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| GVariantIter *g_dbus_get_managed_objects(GDBusConnection *conn, | ||
| const char *name, const char *path, GError **error); | ||
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| GVariant *g_dbus_get_property(GDBusConnection *conn, const char *service, | ||
| const char *path, const char *interface, const char *property, | ||
| GError **error); | ||
| bool g_dbus_set_property(GDBusConnection *conn, const char *service, | ||
| const char *path, const char *interface, const char *property, | ||
| const GVariant *value, GError **error); | ||
|
|
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| #endif |
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