Add beginnings of localed (read-only and no xorg.conf support)

10 files changed, 406 insertions, 19 deletions

diff --git a/.gitignore b/.gitignore
index b0d689f..8fae933 100644
--- a/.gitignore
+++ b/.gitignore
@@ -20,6 +20,7 @@
 /openrc-settingsd
 /stamp-h1
 /src/hostname1-generated.[ch]
+/src/locale1-generated.[ch]
 
 # Relative rules
 *.o
diff --git a/Makefile.am b/Makefile.am
index f2a770a..7ae61ed 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -2,6 +2,7 @@ ACLOCAL_AMFLAGS = -I m4 ${ACLOCAL_FLAGS}
 
 EXTRA_DIST = \
 	data/hostname1.xml \
+	data/locale1.xml \
 	$(NULL)
 
 AM_CPPFLAGS = \
@@ -22,10 +23,18 @@ hostnamed_built_sources = \
 	src/hostname1-generated.h \
 	$(NULL)
 
+localed_built_sources = \
+	src/locale1-generated.c \
+	src/locale1-generated.h \
+	$(NULL)
+
 openrc_settingsd_SOURCES = \
 	$(hostnamed_built_sources) \
+	$(localed_built_sources) \
 	src/hostnamed.c \
 	src/hostnamed.h \
+	src/localed.c \
+	src/localed.h \
 	src/bus-utils.c \
 	src/bus-utils.h \
 	src/shell-utils.c \
@@ -41,5 +50,13 @@ $(hostnamed_built_sources) : data/hostname1.xml
 	$(srcdir)/data/hostname1.xml; \
 	mv hostname1-generated.{c,h} $(top_srcdir)/src/ )
 
-BUILT_SOURCES = $(hostnamed_built_sources)
-CLEANFILES = $(hostnamed_built_sources)
+$(localed_built_sources) : data/locale1.xml
+	( $(GDBUS_CODEGEN) \
+	--interface-prefix org.freedesktop. \
+	--c-namespace OpenrcSettingsdLocaled \
+	--generate-c-code locale1-generated \
+	$(srcdir)/data/locale1.xml; \
+	mv locale1-generated.{c,h} $(top_srcdir)/src/ )
+
+BUILT_SOURCES = $(hostnamed_built_sources) $(localed_built_sources)
+CLEANFILES = $(hostnamed_built_sources) $(localed_built_sources)
diff --git a/README b/README
index 62bd904..bd6adac 100644
--- a/README
+++ b/README
@@ -16,6 +16,28 @@ Hostnamed:
  PRETTY_HOSTNAME="Foo !"
  ICON_NAME="computer-desktop"
 
+Localed:
+
+ See http://www.freedesktop.org/wiki/Software/systemd/localed for the DBus
+ protocol description.
+
+ The system locale variables are set in /etc/env.d/02locale.
+
+ Virtual console keymap is set in /etc/conf.d/keymaps as
+ keymap="foo"
+ The virtual console keymap toggle is not supported.
+
+/*
+ Not implemented yet.
+
+ X11 keyboard options are set in /etc/X11/xorg.conf.d/30-keyboard.conf
+ (falling back to 00-keyboard.conf if it exists and 30-keyboard.conf does
+ not) in an InputClass section.
+ Localed will attempt to detect if multiple InputClass sections with
+ keyboard options exist in /etc/X11/xorg.conf and /etc/X11/xorg.conf.d/,
+ and if that is the case, will refuse to modify X11 keyboard settings.
+*/
+
 Note that openrc-settingsd expects any shell-syntax settings files that it
 modifies to be in UTF-8 encoding, and to consist only of comments and simple
 scalar assignments, i.e. something like
diff --git a/TODO b/TODO
index e8694da..a7feb33 100644
--- a/TODO
+++ b/TODO
@@ -1,4 +1,4 @@
-Add nss-myhostname detection (and add nss-myhostnane to portage)
+Add nss-myhostname detection
 
 Source /etc/rc.conf after /etc/conf.d/$service; do something intelligent
 if the relevant variable is set in /etc/rc.conf (go to read-only mode?)
diff --git a/data/locale1.xml b/data/locale1.xml
new file mode 100644
index 0000000..dfd98d3
--- /dev/null
+++ b/data/locale1.xml
@@ -0,0 +1,30 @@
+<!DOCTYPE node PUBLIC "-//freedesktop//DTD D-BUS Object Introspection 1.0//EN" "http://www.freedesktop.org/standards/dbus/1.0/introspect.dtd">
+<node name="/org/freedesktop/locale1">
+    <interface name="org.freedesktop.locale1">
+        <method name="SetLocale">
+            <arg direction="in" type="as" name="locale"/>
+            <arg direction="in" type="b" name="user_interaction"/>
+        </method>
+        <method name="SetVConsoleKeyboard">
+            <arg direction="in" type="s" name="keymap"/>
+            <arg direction="in" type="s" name="keymap_toggle"/>
+            <arg direction="in" type="b" name="convert"/>
+            <arg direction="in" type="b" name="user_interaction"/>
+        </method>
+        <method name="SetX11Keyboard">
+            <arg direction="in" type="s" name="layout"/>
+            <arg direction="in" type="s" name="model"/>
+            <arg direction="in" type="s" name="variant"/>
+            <arg direction="in" type="s" name="options"/>
+            <arg direction="in" type="b" name="convert"/>
+            <arg direction="in" type="b" name="user_interaction"/>
+        </method>
+        <property name="Locale" type="as" access="read"/>
+        <property name="VConsoleKeymap" type="s" access="read"/>
+        <property name="VConsoleKeymapToggle" type="s" access="read"/>
+        <property name="X11Layout" type="s" access="read"/>
+        <property name="X11Model" type="s" access="read"/>
+        <property name="X11Variant" type="s" access="read"/>
+        <property name="X11Options" type="s" access="read"/>
+    </interface>
+</node>
diff --git a/src/localed.c b/src/localed.c
new file mode 100644
index 0000000..12d9ad7
--- /dev/null
+++ b/src/localed.c
@@ -0,0 +1,227 @@
+/*
+  Copyright 2012 Alexandre Rostovtsev
+
+  This program is free software; you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation; either version 2 of the License, or
+  (at your option) any later version.
+
+  This program is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with this program; if not, write to the Free Software
+  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+*/
+
+#include <stdlib.h>
+
+#include <dbus/dbus-protocol.h>
+#include <glib.h>
+#include <gio/gio.h>
+
+#include "localed.h"
+#include "locale1-generated.h"
+#include "bus-utils.h"
+#include "shell-utils.h"
+
+#include "config.h"
+
+#define SERVICE_NAME "openrc-settingsd localed"
+
+static guint bus_id = 0;
+static gboolean read_only = FALSE;
+
+static OpenrcSettingsdLocaledLocale1 *locale1 = NULL;
+
+static gchar *locale_variables[] = {
+    "LANG", "LC_CTYPE", "LC_NUMERIC", "LC_TIME", "LC_COLLATE", "LC_MONETARY", "LC_MESSAGES", "LC_PAPER", "LC_NAME", "LC_ADDRESS", "LC_TELEPHONE", "LC_MEASUREMENT", "LC_IDENTIFICATION", NULL
+};
+
+static gchar **locale = NULL; /* Expected format is { "LANG=foo", "LC_TIME=bar", NULL } */
+static GFile *locale_file = NULL;
+G_LOCK_DEFINE_STATIC (locale);
+
+static gchar *vconsole_keymap = NULL;
+static gchar *vconsole_keymap_toggle = NULL;
+static GFile *keymaps_file = NULL;
+G_LOCK_DEFINE_STATIC (keymaps);
+
+static gchar *x11_layout = NULL;
+static gchar *x11_model = NULL;
+static gchar *x11_variant = NULL;
+static gchar *x11_options = NULL;
+G_LOCK_DEFINE_STATIC (xorg_conf);
+
+static gboolean
+on_handle_set_locale (OpenrcSettingsdLocaledLocale1 *locale1,
+                      GDBusMethodInvocation *invocation,
+                      const gchar * const *_locale,
+                      const gboolean user_interaction,
+                      gpointer user_data)
+{
+    g_dbus_method_invocation_return_dbus_error (invocation,
+                                                DBUS_ERROR_NOT_SUPPORTED,
+                                                SERVICE_NAME " is in read-only mode");
+
+    return TRUE;
+}
+
+static gboolean
+on_handle_set_vconsole_keyboard (OpenrcSettingsdLocaledLocale1 *locale1,
+                                 GDBusMethodInvocation *invocation,
+                                 const gchar *keymap,
+                                 const gchar *keymap_toggle,
+                                 const gboolean convert,
+                                 const gboolean user_interaction,
+                                 gpointer user_data)
+{
+    g_dbus_method_invocation_return_dbus_error (invocation,
+                                                DBUS_ERROR_NOT_SUPPORTED,
+                                                SERVICE_NAME " is in read-only mode");
+
+    return TRUE;
+}
+
+static gboolean
+on_handle_set_x11_keyboard (OpenrcSettingsdLocaledLocale1 *locale1,
+                            GDBusMethodInvocation *invocation,
+                            const gchar *layout,
+                            const gchar *model,
+                            const gchar *variant,
+                            const gchar *options,
+                            const gboolean convert,
+                            const gboolean user_interaction,
+                            gpointer user_data)
+{
+    g_dbus_method_invocation_return_dbus_error (invocation,
+                                                DBUS_ERROR_NOT_SUPPORTED,
+                                                SERVICE_NAME " is in read-only mode");
+
+    return TRUE;
+}
+
+static void
+on_bus_acquired (GDBusConnection *connection,
+                 const gchar     *bus_name,
+                 gpointer         user_data)
+{
+    gchar *name;
+    GError *err = NULL;
+
+    g_debug ("Acquired a message bus connection");
+
+    locale1 = openrc_settingsd_localed_locale1_skeleton_new ();
+
+    openrc_settingsd_localed_locale1_set_locale (locale1, (const gchar * const *) locale);
+    openrc_settingsd_localed_locale1_set_vconsole_keymap (locale1, vconsole_keymap);
+    openrc_settingsd_localed_locale1_set_vconsole_keymap_toggle (locale1, vconsole_keymap_toggle);
+    openrc_settingsd_localed_locale1_set_x11_layout (locale1, x11_layout);
+    openrc_settingsd_localed_locale1_set_x11_model (locale1, x11_model);
+    openrc_settingsd_localed_locale1_set_x11_variant (locale1, x11_variant);
+    openrc_settingsd_localed_locale1_set_x11_options (locale1, x11_options);
+
+    g_signal_connect (locale1, "handle-set-locale", G_CALLBACK (on_handle_set_locale), NULL);
+    g_signal_connect (locale1, "handle-set-vconsole-keyboard", G_CALLBACK (on_handle_set_vconsole_keyboard), NULL);
+    g_signal_connect (locale1, "handle-set-x11-keyboard", G_CALLBACK (on_handle_set_x11_keyboard), NULL);
+
+    if (!g_dbus_interface_skeleton_export (G_DBUS_INTERFACE_SKELETON (locale1),
+                                           connection,
+                                           "/org/freedesktop/locale1",
+                                           &err)) {
+        if (err != NULL) {
+            g_printerr ("Failed to export interface on /org/freedesktop/locale1: %s\n", err->message);
+            g_error_free (err);
+        }
+    }
+}
+
+static void
+on_name_acquired (GDBusConnection *connection,
+                  const gchar     *bus_name,
+                  gpointer         user_data)
+{
+    g_debug ("Acquired the name %s", bus_name);
+}
+
+static void
+on_name_lost (GDBusConnection *connection,
+              const gchar     *bus_name,
+              gpointer         user_data)
+{
+    if (connection == NULL)
+        g_printerr ("Failed to acquire a dbus connection\n");
+    else
+        g_printerr ("Failed to acquire dbus name %s\n", bus_name);
+    exit(-1);
+}
+
+void
+localed_init (gboolean _read_only)
+{
+    GError *err = NULL;
+    gchar **locale_values = NULL;
+
+    read_only = _read_only;
+    locale_file = g_file_new_for_path (SYSCONFDIR "/env.d/02locale");
+    keymaps_file = g_file_new_for_path (SYSCONFDIR "/conf.d/keymaps");
+
+    locale = g_new0 (gchar *, g_strv_length (locale_variables) + 1);
+    locale_values = shell_utils_trivial_source_var_list (locale_file, (const gchar * const *)locale_variables, &err);
+    if (locale_values != NULL) {
+        gchar **variable, **value, **loc;
+        loc = locale;
+        for (variable = locale_variables, value = locale_values; *variable != NULL; variable++, value++) {
+            if (*value != NULL) {
+                *loc = g_strdup_printf ("%s=%s", *variable, *value);
+                loc++;
+            }
+        }
+            
+        g_strfreev (locale_values);
+    }
+    if (err != NULL) {
+        g_debug ("%s", err->message);
+        g_clear_error (&err);
+    }
+
+    vconsole_keymap = shell_utils_source_var (keymaps_file, "${keymap}", &err);
+    if (vconsole_keymap == NULL)
+        vconsole_keymap = g_strdup ("");
+    if (err != NULL) {
+        g_debug ("%s", err->message);
+        g_clear_error (&err);
+    }
+
+    /* We don't have a good equivalent for this in openrc at the moment */
+    vconsole_keymap_toggle = g_strdup ("");
+
+    bus_id = g_bus_own_name (G_BUS_TYPE_SYSTEM,
+                             "org.freedesktop.locale1",
+                             G_BUS_NAME_OWNER_FLAGS_NONE,
+                             on_bus_acquired,
+                             on_name_acquired,
+                             on_name_lost,
+                             NULL,
+                             NULL);
+}
+
+void
+localed_destroy (void)
+{
+    g_bus_unown_name (bus_id);
+    bus_id = 0;
+    read_only = FALSE;
+    g_strfreev (locale);
+    g_free (vconsole_keymap);
+    g_free (vconsole_keymap_toggle);
+    g_free (x11_layout);
+    g_free (x11_model);
+    g_free (x11_variant);
+    g_free (x11_options);
+
+    g_object_unref (locale_file);
+    g_object_unref (keymaps_file);
+}
diff --git a/src/localed.h b/src/localed.h
new file mode 100644
index 0000000..dff55c6
--- /dev/null
+++ b/src/localed.h
@@ -0,0 +1,31 @@
+/*
+  Copyright 2012 Alexandre Rostovtsev
+
+  This program is free software; you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation; either version 2 of the License, or
+  (at your option) any later version.
+
+  This program is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with this program; if not, write to the Free Software
+  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+*/
+
+#ifndef OPENRC_LOCALED_H
+#define OPENRC_LOCALED_H
+
+#include <glib.h>
+#include <gio/gio.h>
+
+void
+localed_init (gboolean read_only);
+
+void
+localed_destroy (void);
+
+#endif
diff --git a/src/main.c b/src/main.c
index c7165f0..fabb96c 100644
--- a/src/main.c
+++ b/src/main.c
@@ -23,6 +23,7 @@
 #include <gio/gio.h>
 
 #include "hostnamed.h"
+#include "localed.h"
 #include "shell-utils.h"
 
 #include "config.h"
@@ -68,10 +69,12 @@ main (gint argc, gchar *argv[])
 
     shell_utils_init ();
     hostnamed_init (read_only);
+    localed_init (read_only);
     loop = g_main_loop_new (NULL, FALSE);
     g_main_loop_run (loop);
 
     g_main_loop_unref (loop);
+    localed_destroy ();
     hostnamed_destroy ();
     shell_utils_destroy ();
     return 0;
diff --git a/src/shell-utils.c b/src/shell-utils.c
index 30026a9..db67303 100644
--- a/src/shell-utils.c
+++ b/src/shell-utils.c
@@ -45,6 +45,7 @@ struct ShellEntry {
     enum ShellEntryType type;
     gchar *string;
     gchar *variable; /* only relevant for assignments */
+    gchar *unquoted_value; /* only relevant for assignments */
 };
 
 gchar *
@@ -104,10 +105,9 @@ shell_entry_free (struct ShellEntry *entry)
     if (entry == NULL)
         return;
 
-    if (entry->string != NULL)
-        g_free (entry->string);
-    if (entry->variable != NULL)
-        g_free (entry->variable);
+    g_free (entry->string);
+    g_free (entry->variable);
+    g_free (entry->unquoted_value);
     g_free (entry);
 }
 
@@ -132,7 +132,7 @@ shell_utils_trivial_new (GFile *file,
 {
     gchar *filebuf = NULL;
     ShellUtilsTrivial *ret = NULL;
-    GError *local_err;
+    GError *local_err = NULL;
     gchar *s;
 
     if (file == NULL)
@@ -214,6 +214,7 @@ shell_utils_trivial_new (GFile *file,
 
         matched = g_regex_match (var_equals_regex, s, 0, &match_info);
         if (matched) {
+            gchar *raw_value = NULL, *temp1 = NULL, *temp2 = NULL;
             /* If we expect a separator and get an assignment instead, fail */
             if (want_separator)
                 goto no_match;
@@ -231,7 +232,6 @@ shell_utils_trivial_new (GFile *file,
             while (*s != 0) {
                 g_debug ("Scanning string for values: ``%s''", s);
                 gboolean matched2 = FALSE;
-                gchar *temp1 = NULL, *temp2 = NULL;
 
                 matched2 = g_regex_match (single_quoted_regex, s, 0, &match_info);
                 if (matched2)
@@ -256,18 +256,36 @@ shell_utils_trivial_new (GFile *file,
 
                 break;
 append_value:
+
+                if (raw_value == NULL) {
+                    raw_value = g_match_info_fetch (match_info, 0);
+                    s += strlen (raw_value);
+                    g_debug ("Scanned value: ``%s''", raw_value);
+                } else {
+                    temp1 = raw_value;
+                    temp2 = g_match_info_fetch (match_info, 0);
+                    raw_value = g_strconcat (temp1, temp2, NULL);
+                    s += strlen (temp2);
+                    g_debug ("Scanned value: ``%s''", temp2);
+                    g_free (temp1);
+                    g_free (temp2);
+                }
+                g_match_info_free (match_info);
+                match_info = NULL;
+            }
+
+            if (raw_value != NULL) {
+                entry->unquoted_value = g_shell_unquote (raw_value, &local_err);
+                g_debug  ("Unquoted value: ``%s''", entry->unquoted_value);
                 temp1 = entry->string;
-                temp2 = g_match_info_fetch (match_info, 0);
+                temp2 = raw_value;
                 entry->string = g_strconcat (temp1, temp2, NULL);
-                s += strlen (temp2);
-                g_debug ("Scanned value: ``%s''", temp2);
                 g_free (temp1);
                 g_free (temp2);
-                g_match_info_free (match_info);
-                match_info = NULL;
+                ret->entry_list = g_list_prepend (ret->entry_list, entry);
+                if (local_err != NULL)
+                    goto no_match;
             }
-
-            ret->entry_list = g_list_prepend (ret->entry_list, entry);
             continue;
         }
 
@@ -275,9 +293,12 @@ no_match:
         /* Nothing matches, parsing has failed! */
         g_match_info_free (match_info);
         match_info = NULL;
-        g_propagate_error (error,
-                           g_error_new (G_FILE_ERROR, G_FILE_ERROR_FAILED,
-                                        "Unable to parse '%s'", ret->filename));
+        if (local_err != NULL)
+            g_propagate_prefixed_error (error, local_err, "Unable to parse '%s':", ret->filename);
+        else
+            g_propagate_error (error,
+                               g_error_new (G_FILE_ERROR, G_FILE_ERROR_FAILED,
+                                            "Unable to parse '%s'", ret->filename));
         shell_utils_trivial_free (ret);
         return NULL;
     }
@@ -420,6 +441,36 @@ shell_utils_trivial_set_and_save (GFile *file,
     return ret;
 }
 
+gchar **
+shell_utils_trivial_source_var_list (GFile *file,
+                                     const gchar * const *var_names,
+                                     GError **error)
+{
+    ShellUtilsTrivial *trivial;
+    gchar **ret = NULL, **value;
+    const gchar* const* var_name;
+
+    if (var_names == NULL)
+        return NULL;
+
+    if ((trivial = shell_utils_trivial_new (file, error)) == NULL)
+        return NULL;
+
+    ret = g_new0 (gchar *, g_strv_length ((gchar **)var_names) + 1);
+    for (var_name = var_names, value = ret; *var_name != NULL; var_name++, value++) {
+        GList *curr;
+        for (curr = trivial->entry_list; curr != NULL; curr = curr->next) {
+            struct ShellEntry *entry;
+
+            entry = (struct ShellEntry *)(curr->data);
+            if (entry->type == SHELL_ENTRY_TYPE_ASSIGNMENT && g_strcmp0 (*var_name, entry->variable) == 0)
+                *value = g_strdup (entry->unquoted_value);
+        }
+    }
+    shell_utils_trivial_free (trivial);
+    return ret;
+}
+
 void
 shell_utils_destroy (void)
 {
diff --git a/src/shell-utils.h b/src/shell-utils.h
index 5e1863d..9ca40e9 100644
--- a/src/shell-utils.h
+++ b/src/shell-utils.h
@@ -66,4 +66,9 @@ shell_utils_trivial_set_and_save (GFile *file,
                                   const gchar *first_alt_var_name,
                                   const gchar *first_value,
                                   ...);
+
+gchar **
+shell_utils_trivial_source_var_list (GFile *file,
+                                     const gchar * const *var_names,
+                                     GError **error);
 #endif