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-rw-r--r--src/shared/bus-log-control-api.c115
1 files changed, 115 insertions, 0 deletions
diff --git a/src/shared/bus-log-control-api.c b/src/shared/bus-log-control-api.c
new file mode 100644
index 0000000..06e6697
--- /dev/null
+++ b/src/shared/bus-log-control-api.c
@@ -0,0 +1,115 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+
+#include "alloc-util.h"
+#include "bus-get-properties.h"
+#include "bus-log-control-api.h"
+#include "bus-util.h"
+#include "log.h"
+#include "sd-bus.h"
+#include "syslog-util.h"
+
+int bus_property_get_log_level(
+ sd_bus *bus,
+ const char *path,
+ const char *interface,
+ const char *property,
+ sd_bus_message *reply,
+ void *userdata,
+ sd_bus_error *error) {
+
+ _cleanup_free_ char *t = NULL;
+ int r;
+
+ assert(bus);
+ assert(reply);
+
+ r = log_level_to_string_alloc(log_get_max_level(), &t);
+ if (r < 0)
+ return r;
+
+ return sd_bus_message_append(reply, "s", t);
+}
+
+int bus_property_set_log_level(
+ sd_bus *bus,
+ const char *path,
+ const char *interface,
+ const char *property,
+ sd_bus_message *value,
+ void *userdata,
+ sd_bus_error *error) {
+
+ const char *t;
+ int r;
+
+ assert(bus);
+ assert(value);
+
+ r = sd_bus_message_read(value, "s", &t);
+ if (r < 0)
+ return r;
+
+ r = log_level_from_string(t);
+ if (r < 0)
+ return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid log level '%s'", t);
+
+ log_info("Setting log level to %s.", t);
+ log_set_max_level(r);
+
+ return 0;
+}
+
+BUS_DEFINE_PROPERTY_GET_GLOBAL(bus_property_get_log_target, "s", log_target_to_string(log_get_target()));
+
+int bus_property_set_log_target(
+ sd_bus *bus,
+ const char *path,
+ const char *interface,
+ const char *property,
+ sd_bus_message *value,
+ void *userdata,
+ sd_bus_error *error) {
+
+ LogTarget target;
+ const char *t;
+ int r;
+
+ assert(bus);
+ assert(value);
+
+ r = sd_bus_message_read(value, "s", &t);
+ if (r < 0)
+ return r;
+
+ target = log_target_from_string(t);
+ if (target < 0)
+ return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid log target '%s'", t);
+
+ log_info("Setting log target to %s.", log_target_to_string(target));
+ log_set_target(target);
+ log_open();
+
+ return 0;
+}
+
+BUS_DEFINE_PROPERTY_GET_GLOBAL(bus_property_get_syslog_identifier, "s", program_invocation_short_name);
+
+static const sd_bus_vtable log_control_vtable[] = {
+ SD_BUS_VTABLE_START(0),
+
+ SD_BUS_WRITABLE_PROPERTY("LogLevel", "s", bus_property_get_log_level, bus_property_set_log_level, 0, 0),
+ SD_BUS_WRITABLE_PROPERTY("LogTarget", "s", bus_property_get_log_target, bus_property_set_log_target, 0, 0),
+ SD_BUS_PROPERTY("SyslogIdentifier", "s", bus_property_get_syslog_identifier, 0, 0),
+
+ /* One of those days we might want to add a similar, second interface to cover common service
+ * operations such as Reload(), Reexecute(), Exit() … and maybe some properties exposing version
+ * number and other meta-data of the service. */
+
+ SD_BUS_VTABLE_END,
+};
+
+const BusObjectImplementation log_control_object = {
+ "/org/freedesktop/LogControl1",
+ "org.freedesktop.LogControl1",
+ .vtables = BUS_VTABLES(log_control_vtable),
+};