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authorKay Sievers <kay@vrfy.org>2013-11-02 00:10:12 +0100
committerKay Sievers <kay@vrfy.org>2013-11-02 01:48:22 +0100
commitffc06c3513d9a0693c7f810d03b20705127ba55a (patch)
treef0be63421f887d4510baba8e92482f96d7018861 /src/libsystemd-bus
parent98e6c5e62ffcec33bd5255ebaafeafdc5a3f1ada (diff)
bus: use internal helper to read org.freedesktop.DBus.Properties::GetAll variables
Diffstat (limited to 'src/libsystemd-bus')
-rw-r--r--src/libsystemd-bus/bus-util.c165
-rw-r--r--src/libsystemd-bus/bus-util.h11
2 files changed, 173 insertions, 3 deletions
diff --git a/src/libsystemd-bus/bus-util.c b/src/libsystemd-bus/bus-util.c
index 0632288776..857e0c16ed 100644
--- a/src/libsystemd-bus/bus-util.c
+++ b/src/libsystemd-bus/bus-util.c
@@ -21,13 +21,16 @@
#include <sys/socket.h>
-#include "sd-event.h"
-#include "sd-bus.h"
-
#include "util.h"
+#include "strv.h"
#include "macro.h"
#include "def.h"
+#include "sd-event.h"
+#include "sd-bus.h"
+#include "bus-error.h"
+#include "bus-message.h"
+
#include "bus-util.h"
static int quit_callback(sd_bus *bus, sd_bus_message *m, void *userdata) {
@@ -595,6 +598,162 @@ int bus_generic_print_property(const char *name, sd_bus_message *property, bool
return 0;
}
+int bus_map_all_properties(sd_bus *bus,
+ const char *destination,
+ const char *path,
+ const struct bus_properties_map *map) {
+ _cleanup_bus_message_unref_ sd_bus_message *m = NULL;
+ _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
+ int r;
+
+ r = sd_bus_call_method( bus,
+ destination,
+ path,
+ "org.freedesktop.DBus.Properties",
+ "GetAll",
+ &error,
+ &m,
+ "s", "");
+ if (r < 0) {
+ log_error("Could not get properties: %s", bus_error_message(&error, -r));
+ return r;
+ }
+
+ r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "{sv}");
+ if (r < 0)
+ return r;
+
+ while ((r = sd_bus_message_enter_container(m, SD_BUS_TYPE_DICT_ENTRY, "sv")) > 0) {
+ const char *name;
+ char type;
+ const char *contents;
+ unsigned i;
+
+ r = sd_bus_message_read_basic(m, SD_BUS_TYPE_STRING, &name);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_peek_type(m, NULL, &contents);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_enter_container(m, SD_BUS_TYPE_VARIANT, contents);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_peek_type(m, &type, &contents);
+ if (r < 0) {
+ log_error("Could not determine type of message: %s", strerror(-r));
+ return r;
+ }
+
+ switch (type) {
+ case SD_BUS_TYPE_STRING: {
+ const char *s;
+
+ sd_bus_message_read_basic(m, type, &s);
+ if (isempty(s))
+ break;
+
+ for (i = 0; map[i].type; i++) {
+ const char **p;
+
+ if (!streq(map[i].type, "s"))
+ continue;
+ if (!streq(map[i].name, name))
+ continue;
+
+ p = map[i].ptr;
+ *p = strdup(s);
+ if (!*p) {
+ r = -ENOMEM;
+ goto fail;
+ }
+ }
+ break;
+ }
+
+ case SD_BUS_TYPE_ARRAY: {
+ _cleanup_strv_free_ char **l = NULL;
+
+ if (!streq(contents, "s"))
+ break;
+
+ for (i = 0; map[i].type; i++) {
+ char ***p;
+
+ if (!streq(map[i].type, "as"))
+ continue;
+ if (!streq(map[i].name, name))
+ continue;
+
+ r = bus_message_read_strv_extend(m, &l);
+ if (r < 0)
+ break;
+
+ p = map[i].ptr;
+ strv_free(*p);
+ *p = l;
+ l = NULL;
+ }
+ break;
+ }
+
+ case SD_BUS_TYPE_BOOLEAN: {
+ unsigned b;
+
+ sd_bus_message_read_basic(m, type, &b);
+
+ for (i = 0; map[i].type; i++) {
+ bool *p;
+
+ if (!streq(map[i].type, "b"))
+ continue;
+ if (!streq(map[i].name, name))
+ continue;
+
+ p = map[i].ptr;
+ *p = b;
+ }
+ break;
+ }
+
+ case SD_BUS_TYPE_UINT64: {
+ uint64_t t;
+
+ sd_bus_message_read_basic(m, type, &t);
+
+ for (i = 0; map[i].type; i++) {
+ uint64_t *p;
+
+ if (!streq(map[i].type, "t"))
+ continue;
+ if (!streq(map[i].name, name))
+ continue;
+
+ p = map[i].ptr;
+ *p = t;
+ }
+ break;
+ }
+
+ default:
+ break;
+ }
+
+ r = sd_bus_message_exit_container(m);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_exit_container(m);
+ if (r < 0)
+ return r;
+ }
+
+fail:
+ return r;
+}
+
int bus_open_transport(BusTransport transport, const char *host, bool user, sd_bus **bus) {
int r;
diff --git a/src/libsystemd-bus/bus-util.h b/src/libsystemd-bus/bus-util.h
index e70006e6eb..ddb926498f 100644
--- a/src/libsystemd-bus/bus-util.h
+++ b/src/libsystemd-bus/bus-util.h
@@ -35,6 +35,17 @@ typedef enum BusTransport {
_BUS_TRANSPORT_INVALID = -1
} BusTransport;
+struct bus_properties_map {
+ const char *type;
+ const char *name;
+ void *ptr;
+};
+
+int bus_map_all_properties(sd_bus *bus,
+ const char *destination,
+ const char *path,
+ const struct bus_properties_map *map);
+
int bus_async_unregister_and_quit(sd_event *e, sd_bus *bus, const char *name);
int bus_event_loop_with_idle(sd_event *e, sd_bus *bus, const char *name, usec_t timeout);