+/*
+ * Copyright (c) 2014 Ian Sutton <ian@kremlin.cc>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
#include <unistd.h>
#include <limits.h>
-#include <gio/gio.h>
-
-
-GDBusNodeInfo *spect_data;
-
-static gchar *hostname;
-static gchar *pretty_hostname;
-static gchar *static_hostname;
-static gchar *icon_name;
-static gchar *chassis;
-static gchar *kernel_name;
-static gchar *kernel_release;
-static gchar *kernel_version;
-static gchar *os_prettyname;
-static gchar *os_cpe; //common platform enumeration string
-
-static void handle_method_call(GDBusConnection *conn,
- const gchar *sender,
- const gchar *obj_path,
- const gchar *interf_name,
- const gchar *method_name,
- GVariant *params,
- GDBusMethodInvocation *invc,
- gpointer usrdat) {
-
- if(g_strcmp0(interf_name, "org.freedesktop.DBus.Introspectable") == 0
- && g_strcmp0(method_name, "Introspect") == 0) {
-
- GVariant *xml_ret_gvar;
- GString *xml_ret;
-
- g_dbus_interface_info_generate_xml(spect_data->interfaces[0], (guint)0, xml_ret);
- xml_ret_gvar = g_variant_new_string(xml_ret->str);
- g_dbus_method_invocation_return_value(invc, xml_ret_gvar);
- }
+#include <signal.h>
-}
+#include <sys/param.h>
+#include <string.h>
-static GVariant * handle_get_property(GDBusConnection *conn,
- const gchar *sender,
- const gchar *obj_path,
- const gchar *interf_name,
- const gchar *prop_name,
- GError **err,
- gpointer usr_data) {
-
- const gchar *our_interf_name = "org.freedesktop.hostname1";
- const gchar *our_obj_path = "/org/freedesktop/hostname1";
+#include <glib/gprintf.h>
+#include <glib-unix.h>
- if(g_strcmp0(interf_name, our_interf_name) != 0
- || g_strcmp0(obj_path, our_obj_path) != 0) {
+#include "hostnamed-gen.h"
+#include "hostnamed.h"
- return NULL; //TODO error
- }
+GPtrArray *hostnamed_freeable;
+Hostname1 *hostnamed_interf;
+
+GMainLoop *hostnamed_loop;
- if(g_strcmp0(prop_name, "Hostname") == 0)
- return g_variant_new_string(hostname);
+guint bus_descriptor;
+gboolean dbus_interface_exported; /* reliable because of gdbus operational guarantees */
- else if(g_strcmp0(prop_name, "StaticHostname") == 0)
- return g_variant_new_string(static_hostname);
+/* --- begin method/property/dbus signal code --- */
- else if(g_strcmp0(prop_name, "PrettyHostname") == 0)
- return g_variant_new_string(pretty_hostname);
+static gboolean
+on_handle_set_hostname(Hostname1 *hn1_passed_interf,
+ GDBusMethodInvocation *invoc,
+ const gchar *greet,
+ gpointer data) {
+ return FALSE;
+}
- else if(g_strcmp0(prop_name, "IconName") == 0)
- return g_variant_new_string(icon_name);
+static gboolean
+on_handle_set_static_hostname(Hostname1 *hn1_passed_interf,
+ GDBusMethodInvocation *invoc,
+ const gchar *greet,
+ gpointer data) {
+ return FALSE;
+}
- else
- return NULL; //TODO error
-
+static gboolean
+on_handle_set_pretty_hostname(Hostname1 *hn1_passed_interf,
+ GDBusMethodInvocation *invoc,
+ const gchar *greet,
+ gpointer data) {
+ return FALSE;
}
-static gboolean handle_set_property(GDBusConnection *conn,
- const gchar *sender,
- const gchar *obj_path,
- const gchar *interf_name,
- const gchar *prop_name,
- GVariant *val,
- GError **err,
- gpointer usr_data) {
-
- g_dbus_connection_emit_signal(conn,
- NULL,
- obj_path,
- "org.freedesktop.DBus.Properties",
- "PropertiesChanged",
- NULL, /* incorrect */
- NULL);
-
- return TRUE;
+static gboolean
+on_handle_set_chassis(Hostname1 *hn1_passed_interf,
+ GDBusMethodInvocation *invoc,
+ const gchar *greet,
+ gpointer data) {
+ return FALSE;
}
-/* "hot" functions initially passed to gdbus */
-static const GDBusInterfaceVTable interface_vtable =
-{
- handle_method_call,
- handle_get_property,
- handle_set_property
-};
-
-/* end method/property functions, begin bus name handlers
- * TODO: these should be intertwined as to handle edge cases
- * for when the system cannot immediately grab the name, as
- * well as cases where the system unintendedly loses the name
+static gboolean
+on_handle_set_icon_name(Hostname1 *hn1_passed_interf,
+ GDBusMethodInvocation *invoc,
+ const gchar *greet,
+ gpointer data) {
+ return FALSE;
+}
+
+/* note: all hostnamed/hostname1's properties are read-only,
+ * and do not need set_ functions, gdbus-codegen realized
+ * this from the XML and handled the to-be error of trying
+ * to set a read-only property's value
*/
-static void on_bus_acquired(GDBusConnection *conn,
- const gchar *name,
- gpointer user_data) {
- GError *err;
+const gchar *
+our_get_hostname() {
+
+ gchar *hostname_buf, *ret;
+ size_t hostname_divider;
+
+ hostname_buf = (gchar*) g_malloc0(MAXHOSTNAMELEN); /* todo check & free */
+ ret = (gchar*) g_malloc0(MAXHOSTNAMELEN);
+ g_ptr_array_add(hostnamed_freeable, hostname_buf);
+ g_ptr_array_add(hostnamed_freeable, ret);
- g_print("got bus, name: %s\n", name);
+ if(gethostname(hostname_buf, MAXHOSTNAMELEN))
+ return "";
- //GDBusObjectSkeleton *hostnamed_dbobj = g_dbus_object_skeleton_new("/org/freedesktop/hostname1");
+ hostname_divider = strcspn(hostname_buf, ".");
- g_dbus_connection_register_object(conn,
- "/org/freedesktop/hostname1",
- spect_data->interfaces[0],
- &interface_vtable,
- NULL, NULL, NULL);
+ return strncpy(ret, hostname_buf, hostname_divider);
}
-static void on_name_acquired(GDBusConnection *conn,
- const gchar *name,
- gpointer user_data) {
+const gchar *
+our_get_static_hostname() {
- g_print("got name %s\n", name);
+ return "TODO";
}
-static void on_name_lost(GDBusConnection *conn,
- const gchar *name,
- gpointer user_data) {
+const gchar *
+our_get_pretty_hostname() {
- g_print("lost name %s, exiting...", name);
- //TODO exit through g_main_loop properly...
- exit(0);
+ return "TODO";
}
-/* safe call to try and start hostnamed */
-GError * hostnamed_init() {
+const gchar *
+our_get_chassis() {
- guint bus_descriptor;
- GError *err = NULL;
- gchar **hostnamed_ispect_xml = g_malloc(3000);
- gchar *hostnamed_joined_xml = g_malloc(3000);
+ return "TODO";
+}
- g_file_get_contents("conf/hostnamed-ispect.xml", hostnamed_ispect_xml, NULL, err);
- hostnamed_joined_xml = g_strjoinv("\n", hostnamed_ispect_xml);
- spect_data = g_dbus_node_info_new_for_xml(hostnamed_joined_xml, NULL);
+const gchar *
+our_get_icon_name() {
- if(!init_props())
- return err; //TODO error
-
- bus_descriptor = g_bus_own_name(G_BUS_TYPE_SYSTEM,
- "org.freedesktop.hostname1",
- G_BUS_NAME_OWNER_FLAGS_NONE,
- on_bus_acquired,
- on_name_acquired,
- on_name_lost,
- NULL,
- NULL);
-
- //TODO: malloc and return reference as if a main() closed
- return err;
+ return "TODO";
}
-gboolean init_props() {
-
- if(init_hostname()
- && init_static_hostname()
- && init_pretty_hostname()
- && init_icon_name()
- && init_chassis()
- && init_kernel_name()
- && init_kernel_version()
- && init_os_name()
- && init_os_cpe() )
- return TRUE;
-
- return FALSE;
+const gchar *
+our_get_kernel_name() {
+
+ return "TODO";
}
-//POSIX, for future ports try_hostname should be checked for null-termination
-gboolean init_hostname() {
+const gchar *
+our_get_kernel_version() {
- gchar try_hostname[HOST_NAME_MAX];
+ return "TODO";
+}
- if(!gethostname(try_hostname, HOST_NAME_MAX)) {
- hostname = try_hostname;
- return TRUE;
- }
+const gchar *
+our_get_kernel_release() {
- return FALSE;
+ return "TODO";
}
-gboolean init_static_hostname() {
- //TODO
- return TRUE;
+const gchar *
+our_get_os_cpename() {
+
+ return "TODO";
}
-gboolean init_pretty_hostname() {
- //TODO
- return TRUE;
+const gchar *
+our_get_os_pretty_name() {
+
+ return "TODO";
}
-gboolean init_icon_name() {
- //TODO
- return TRUE;
+/* --- end method/property/dbus signal code, begin bus/name handlers --- */
+
+static void hostnamed_on_bus_acquired(GDBusConnection *conn,
+ const gchar *name,
+ gpointer user_data) {
+
+ g_printf("got bus/name, exporting %s's interface...\n", name);
+
+ hostnamed_interf = hostname1_skeleton_new();
+
+ /* attach function pointers to generated struct's method handlers */
+ g_signal_connect(hostnamed_interf, "handle-set-hostname", G_CALLBACK(on_handle_set_hostname), NULL);
+ g_signal_connect(hostnamed_interf, "handle-set-static-hostname", G_CALLBACK(on_handle_set_static_hostname), NULL);
+ g_signal_connect(hostnamed_interf, "handle-set-pretty-hostname", G_CALLBACK(on_handle_set_pretty_hostname), NULL);
+ g_signal_connect(hostnamed_interf, "handle-set-chassis", G_CALLBACK(on_handle_set_chassis), NULL);
+ g_signal_connect(hostnamed_interf, "handle-set-icon-name", G_CALLBACK(on_handle_set_icon_name), NULL);
+
+ /* set our properties before export */
+ hostname1_set_hostname(hostnamed_interf, our_get_hostname());
+ hostname1_set_static_hostname(hostnamed_interf, our_get_static_hostname());
+ hostname1_set_pretty_hostname(hostnamed_interf, our_get_pretty_hostname());
+ hostname1_set_chassis(hostnamed_interf, our_get_chassis());
+ hostname1_set_icon_name(hostnamed_interf, our_get_icon_name());
+ hostname1_set_kernel_name(hostnamed_interf, our_get_kernel_name());
+ hostname1_set_kernel_version(hostnamed_interf, our_get_kernel_version());
+ hostname1_set_kernel_release(hostnamed_interf, our_get_kernel_release());
+ hostname1_set_operating_system_cpename(hostnamed_interf, our_get_os_cpename());
+ hostname1_set_operating_system_pretty_name(hostnamed_interf, our_get_os_pretty_name());
+
+ if(!g_dbus_interface_skeleton_export(G_DBUS_INTERFACE_SKELETON(hostnamed_interf),
+ conn,
+ "/org/freedesktop/hostname1",
+ NULL)) {
+
+ g_printf("failed to export %s's interface!\n", name); /* unusual edge case, TODO check errno */
+ hostnamed_mem_clean();
+
+ } else {
+
+ dbus_interface_exported = TRUE;
+ g_printf("exported %s's interface on the system bus...", name);
+ }
+
}
-gboolean init_chassis() {
- //TODO
- return TRUE;
+static void hostnamed_on_name_acquired(GDBusConnection *conn,
+ const gchar *name,
+ gpointer user_data) {
+
+ g_printf("success!\n");
+
}
-gboolean init_kernel_name() {
- //TODO
- return TRUE;
+static void hostnamed_on_name_lost(GDBusConnection *conn,
+ const gchar *name,
+ gpointer user_data) {
+
+ if(!conn) {
+
+ g_printf("failed to connect to the system bus while trying to acquire name '%s': either dbus-daemon isn't running or we don't have permission to push names and/or their interfaces to it", name);
+
+ hostnamed_mem_clean();
+ }
+
+ g_printf("lost name %s, exiting...", name);
+
+ hostnamed_mem_clean();
}
-gboolean init_kernel_version() {
- //TODO
- return TRUE;
+/* --- end bus/name handlers, begin misc unix functions --- */
+
+/* safe call to clean and then exit
+ * this stops our GMainLoop safely before letting main() return */
+void hostnamed_mem_clean() {
+
+ g_printf("exiting...\n");
+
+ if(dbus_interface_exported)
+ g_dbus_interface_skeleton_unexport(G_DBUS_INTERFACE_SKELETON(hostnamed_interf));
+
+ if(g_main_loop_is_running(hostnamed_loop))
+ g_main_loop_quit(hostnamed_loop);
+
+}
+
+/* wrapper for glib's unix signal handling; called only once if terminatating signal is raised against us */
+gboolean unix_sig_terminate_handler(gpointer data) {
+
+ g_printf("caught SIGINT/HUP/TERM, exiting\n");
+
+ hostnamed_mem_clean();
+ return G_SOURCE_REMOVE;
}
-gboolean init_os_name() {
- //TODO
- return TRUE;
+void set_signal_handlers() {
+
+ /* we don't care about its descriptor, we never need to unregister these */
+ g_unix_signal_add(SIGINT, unix_sig_terminate_handler, NULL);
+ g_unix_signal_add(SIGHUP, unix_sig_terminate_handler, NULL);
+ g_unix_signal_add(SIGTERM, unix_sig_terminate_handler, NULL);
}
-gboolean init_os_cpe() {
- //TODO
- return TRUE;
+int main() {
+
+ set_signal_handlers();
+
+ hostnamed_loop = g_main_loop_new(NULL, TRUE);
+ hostnamed_freeable = g_ptr_array_new();
+
+ bus_descriptor = g_bus_own_name(G_BUS_TYPE_SYSTEM,
+ "org.freedesktop.hostname1",
+ G_BUS_NAME_OWNER_FLAGS_NONE,
+ hostnamed_on_bus_acquired,
+ hostnamed_on_name_acquired,
+ hostnamed_on_name_lost,
+ NULL,
+ NULL);
+
+ g_main_loop_run(hostnamed_loop);
+ /* runs until single g_main_loop_quit() call is raised inside <interface>_mem_clean() */
+ g_main_loop_unref(hostnamed_loop);
+
+ /* guaranteed unownable */
+ g_bus_unown_name(bus_descriptor);
+
+ /* at this point no operations can occur with our data, it is safe to free it + its container */
+ g_ptr_array_free(hostnamed_freeable, TRUE);
+
+ return 0;
}
-//TODO figure out DMI variables on obsd
+/* TODO figure out DMI variables on obsd */
/*static gchar *guess_icon_name() {
gchar *filebuf = NULL;
gchar *ret = NULL;
- //TODO vm check
-
- #if defined(__i386__) || defined(__x86_64__)
- /*
+ #if defined(__i386__) || defined(__x86_64__)
+
Taken with a few minor changes from systemd's hostnamed.c,
copyright 2011 Lennart Poettering.
details about the values listed here:
http://www.dmtf.org/sites/default/files/standards/documents/DSP0134_2.7.1.pdf
- */ /*
+
if (g_file_get_contents ("/sys/class/dmi/id/chassis_type", &filebuf, NULL, NULL)) {
switch (g_ascii_strtoull (filebuf, NULL, 10)) {
goto out;
}
}
- #endif
+ #endif
ret = g_strdup ("computer");
out:
g_free (filebuf);
return ret;
}*/
+
projects / systembsd.git / blobdiff