Add server commandsHEADmaster

Squashed commit of the following:

commit 4ca788c95231709813bbe99220f93b4ef3e9c4ef
Author: Evgeniy Alexeev <e.alekseev@k-soft-spb.ru>
Date:   Wed Oct 12 12:19:45 2022 +0500

    Add host boot commands, pooulate variant functions

commit 21c36beefd0304a600a2f781a60559f647d569fb
Author: Evgeniy Alexeev <e.alekseev@k-soft-spb.ru>
Date:   Mon Oct 10 19:07:45 2022 +0500

    Begin to add variant type

commit b6f6416fa4dfbff9c677c4491fb42c5d3adb9d44
Author: Evgeniy Alexeev <e.alekseev@k-soft-spb.ru>
Date:   Mon Oct 10 14:04:30 2022 +0500

    Modify status commands in server

commit 72405cee84fbddb8866a8a3d96350010266fc137
Author: Evgeniy Alexeev <e.alekseev@k-soft-spb.ru>
Date:   Mon Oct 10 13:35:37 2022 +0500

    Add power&policy status, get sdbus property func

commit 81f88de144d6803bf4d53986193bf342772367eb
Author: ironcaterpillar <ironcaterpillar@yandex.ru>
Date:   Sat Oct 8 13:42:22 2022 +0500

    Refactor d_bus_commands to separate file

commit 224e5b8317e7e3ffbb04ada342447bf678297002
Author: Evgeniy Alexeev <e.alekseev@k-soft-spb.ru>
Date:   Fri Oct 7 19:18:14 2022 +0500

    Add power policy commands, refactor

commit 94427ebcf778a2c0cc148c0344002491abdb052c
Author: Evgeniy Alexeev <e.alekseev@k-soft-spb.ru>
Date:   Thu Oct 6 18:23:42 2022 +0500

    Add server power commands help

commit 6888ffd32af65cb984792a47f65983207c00467e
Author: Evgeniy Alexeev <e.alekseev@k-soft-spb.ru>
Date:   Thu Oct 6 17:31:26 2022 +0500

    Add unknown power command error message

commit 5d1b4a2000820de903f10959b499c758eba383e0
Author: Evgeniy Alexeev <e.alekseev@k-soft-spb.ru>
Date:   Thu Oct 6 15:54:37 2022 +0500

    Fix host power dbus property name

commit 49f8a15abdfb749427bd5769725b3ad54dc0583b
Author: Evgeniy Alexeev <e.alekseev@k-soft-spb.ru>
Date:   Thu Oct 6 13:27:37 2022 +0500

    Add .gitignore

commit 96569d5f9c7f245fd82545919a1910828c1058d9
Author: Evgeniy Alexeev <e.alekseev@k-soft-spb.ru>
Date:   Thu Oct 6 13:27:10 2022 +0500

    Add sdbus, server power commands

1 files changed, 129 insertions, 0 deletions

diff --git a/src/d_bus.c b/src/d_bus.c
new file mode 100644
index 0000000..76a84fc
--- /dev/null
+++ b/src/d_bus.c
@@ -0,0 +1,129 @@
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdbool.h>
+#include <errno.h>
+
+#include <systemd/sd-bus.h>
+
+#include "utils.h"
+#include "d_bus_variant.h"
+#include "d_bus.h"
+
+
+int dbus_set_property_string(const string_quadruple_t* path, const char* value)
+{
+    _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
+    _cleanup_bus_message_unref_ sd_bus_message *m = NULL;
+    _cleanup_bus_unref_ sd_bus *bus = NULL;
+
+    int r;
+
+    /* Connect to the system bus */
+    r = sd_bus_open_system(&bus);
+    if (r >= 0)
+    {
+
+        r = sd_bus_set_property(
+            bus,
+            path->first,
+            path->second,
+            path->third,
+            path->fourth,
+            &error,
+            "s",
+            value);
+
+    }
+    if (r < 0)
+    {
+        fprintf(stderr, "Failed to issue dbus call: %d %s\n", r, error.message);
+    }
+
+    return (r>0?(0):(r));
+}
+
+int dbus_set_property(const string_quadruple_t* path, dbus_value_variant_t value)
+{
+    _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
+    _cleanup_bus_message_unref_ sd_bus_message *m = NULL;
+    _cleanup_bus_unref_ sd_bus *bus = NULL;
+
+    int r;
+
+    /* Connect to the system bus */
+    r = sd_bus_open_system(&bus);
+    if (r >= 0)
+    {
+
+        if(strcmp(value.type, "s") ==0 )
+        {
+
+        r = sd_bus_set_property(
+            bus,
+            path->first,
+            path->second,
+            path->third,
+            path->fourth,
+            &error,
+            value.type,
+            value.string);
+        }
+        else if(strcmp(value.type, "b") ==0 )
+        {
+
+        r = sd_bus_set_property(
+            bus,
+            path->first,
+            path->second,
+            path->third,
+            path->fourth,
+            &error,
+            value.type,
+            value.boolean);
+        }
+        else {
+            fprintf(stderr, "Failed to find type: %s\n", value.type);
+            return -EOPNOTSUPP;
+        }
+    }
+    if (r < 0)
+    {
+        fprintf(stderr, "Failed to issue dbus call: %d %s\n", r, error.message);
+    }
+
+    return (r>0?(0):(r));
+}
+
+
+char* dbus_get_property_string(const string_quadruple_t* path )
+{
+    _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
+    _cleanup_bus_message_unref_ sd_bus_message *m = NULL;
+    _cleanup_bus_unref_ sd_bus *bus = NULL;
+    char *state = NULL;
+    int r;
+
+    /* Connect to the system bus */
+    r = sd_bus_open_system(&bus);
+    if (r >= 0)
+    {
+
+        r = sd_bus_get_property_string(
+            bus,
+            path->first,
+            path->second,
+            path->third,
+            path->fourth,
+            &error,
+            &state);        
+        /* Issue the method call and store the respons message in m */
+    }
+    if (r < 0)
+    {
+        fprintf(stderr, "Failed to issue dbus call: %d %s\n", r, error.message);
+    }
+
+    return (r>=0?(state):(NULL));
+}
+