1 | /* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*- |
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2 | * |
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3 | * Copyright (C) 2007 William Jon McCann <mccann@jhu.edu> |
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4 | * |
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5 | * This program is free software; you can redistribute it and/or modify |
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6 | * it under the terms of the GNU General Public License as published by |
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7 | * the Free Software Foundation; either version 2 of the License, or |
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8 | * (at your option) any later version. |
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9 | * |
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10 | * This program is distributed in the hope that it will be useful, |
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11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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13 | * GNU General Public License for more details. |
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14 | * |
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15 | * You should have received a copy of the GNU General Public License |
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16 | * along with this program; if not, write to the Free Software |
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17 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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18 | * |
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19 | */ |
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20 | |
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21 | #include "config.h" |
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22 | |
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23 | #include <stdlib.h> |
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24 | #include <stdio.h> |
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25 | #include <fcntl.h> |
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26 | #include <unistd.h> |
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27 | #include <string.h> |
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28 | #include <signal.h> |
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29 | #include <sys/stat.h> |
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30 | #include <sys/types.h> |
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31 | |
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32 | #include <glib.h> |
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33 | #include <glib/gi18n.h> |
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34 | #include <glib/gstdio.h> |
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35 | #include <glib-object.h> |
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36 | |
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37 | #include "gdm-settings-desktop-backend.h" |
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38 | |
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39 | #include "gdm-marshal.h" |
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40 | |
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41 | #define GDM_SETTINGS_DESKTOP_BACKEND_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), GDM_TYPE_SETTINGS_DESKTOP_BACKEND, GdmSettingsDesktopBackendPrivate)) |
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42 | |
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43 | struct GdmSettingsDesktopBackendPrivate |
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44 | { |
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45 | char *filename; |
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46 | GKeyFile *key_file; |
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47 | gboolean dirty; |
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48 | guint save_id; |
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49 | }; |
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50 | |
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51 | static void gdm_settings_desktop_backend_class_init (GdmSettingsDesktopBackendClass *klass); |
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52 | static void gdm_settings_desktop_backend_init (GdmSettingsDesktopBackend *settings_desktop_backend); |
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53 | static void gdm_settings_desktop_backend_finalize (GObject *object); |
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54 | |
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55 | G_DEFINE_TYPE (GdmSettingsDesktopBackend, gdm_settings_desktop_backend, GDM_TYPE_SETTINGS_BACKEND) |
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56 | |
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57 | static gboolean |
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58 | parse_key_string (const char *keystring, |
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59 | char **group, |
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60 | char **key, |
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61 | char **locale, |
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62 | char **value) |
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63 | { |
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64 | char **split1; |
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65 | char **split2; |
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66 | char *g; |
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67 | char *k; |
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68 | char *l; |
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69 | char *v; |
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70 | char *tmp1; |
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71 | char *tmp2; |
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72 | gboolean ret; |
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73 | |
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74 | g_return_val_if_fail (keystring != NULL, FALSE); |
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75 | |
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76 | ret = FALSE; |
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77 | g = k = v = l = NULL; |
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78 | split1 = split2 = NULL; |
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79 | |
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80 | if (group != NULL) { |
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81 | *group = g; |
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82 | } |
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83 | if (key != NULL) { |
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84 | *key = k; |
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85 | } |
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86 | if (locale != NULL) { |
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87 | *locale = l; |
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88 | } |
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89 | if (value != NULL) { |
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90 | *value = v; |
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91 | } |
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92 | |
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93 | /*g_debug ("Attempting to parse key string: %s", keystring);*/ |
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94 | |
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95 | split1 = g_strsplit (keystring, "/", 2); |
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96 | if (split1 == NULL |
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97 | || split1 [0] == NULL |
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98 | || split1 [1] == NULL |
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99 | || split1 [0][0] == '\0' |
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100 | || split1 [1][0] == '\0') { |
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101 | g_warning ("GdmSettingsDesktopBackend: invalid key: %s", keystring); |
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102 | goto out; |
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103 | } |
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104 | |
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105 | g = split1 [0]; |
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106 | |
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107 | split2 = g_strsplit (split1 [1], "=", 2); |
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108 | if (split2 == NULL) { |
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109 | k = split1 [1]; |
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110 | } else { |
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111 | k = split2 [0]; |
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112 | v = split2 [1]; |
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113 | } |
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114 | |
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115 | /* trim off the locale */ |
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116 | tmp1 = strchr (k, '['); |
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117 | tmp2 = strchr (k, ']'); |
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118 | if (tmp1 != NULL && tmp2 != NULL && tmp2 > tmp1) { |
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119 | l = g_strndup (tmp1 + 1, tmp2 - tmp1 - 1); |
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120 | *tmp1 = '\0'; |
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121 | } |
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122 | |
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123 | ret = TRUE; |
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124 | |
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125 | if (group != NULL) { |
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126 | *group = g_strdup (g); |
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127 | } |
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128 | if (key != NULL) { |
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129 | *key = g_strdup (k); |
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130 | } |
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131 | if (locale != NULL) { |
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132 | *locale = g_strdup (l); |
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133 | } |
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134 | if (value != NULL) { |
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135 | *value = g_strdup (v); |
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136 | } |
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137 | out: |
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138 | |
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139 | g_strfreev (split1); |
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140 | g_strfreev (split2); |
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141 | |
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142 | return ret; |
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143 | } |
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144 | |
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145 | static gboolean |
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146 | gdm_settings_desktop_backend_get_value (GdmSettingsBackend *backend, |
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147 | const char *key, |
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148 | char **value, |
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149 | GError **error) |
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150 | { |
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151 | GError *local_error; |
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152 | char *val; |
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153 | char *g; |
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154 | char *k; |
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155 | char *l; |
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156 | gboolean ret; |
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157 | |
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158 | g_return_val_if_fail (GDM_IS_SETTINGS_BACKEND (backend), FALSE); |
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159 | g_return_val_if_fail (key != NULL, FALSE); |
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160 | |
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161 | ret = FALSE; |
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162 | |
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163 | if (value != NULL) { |
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164 | *value = NULL; |
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165 | } |
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166 | |
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167 | val = g = k = l = NULL; |
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168 | /*GDM_SETTINGS_BACKEND_CLASS (gdm_settings_desktop_backend_parent_class)->get_value (display);*/ |
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169 | if (! parse_key_string (key, &g, &k, &l, NULL)) { |
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170 | g_set_error (error, GDM_SETTINGS_BACKEND_ERROR, GDM_SETTINGS_BACKEND_ERROR_KEY_NOT_FOUND, "Key not found"); |
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171 | goto out; |
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172 | } |
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173 | |
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174 | /*g_debug ("Getting key: %s %s %s", g, k, l);*/ |
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175 | local_error = NULL; |
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176 | val = g_key_file_get_value (GDM_SETTINGS_DESKTOP_BACKEND (backend)->priv->key_file, |
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177 | g, |
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178 | k, |
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179 | &local_error); |
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180 | if (local_error != NULL) { |
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181 | g_error_free (local_error); |
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182 | g_set_error (error, GDM_SETTINGS_BACKEND_ERROR, GDM_SETTINGS_BACKEND_ERROR_KEY_NOT_FOUND, "Key not found"); |
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183 | goto out; |
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184 | } |
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185 | |
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186 | if (value != NULL) { |
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187 | *value = g_strdup (val); |
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188 | } |
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189 | ret = TRUE; |
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190 | out: |
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191 | g_free (val); |
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192 | g_free (g); |
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193 | g_free (k); |
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194 | g_free (l); |
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195 | |
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196 | return ret; |
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197 | } |
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198 | |
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199 | static void |
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200 | save_settings (GdmSettingsDesktopBackend *backend) |
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201 | { |
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202 | GError *local_error; |
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203 | char *contents; |
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204 | gsize length; |
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205 | |
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206 | if (! backend->priv->dirty) { |
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207 | return; |
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208 | } |
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209 | |
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210 | g_debug ("Saving settings to %s", backend->priv->filename); |
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211 | |
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212 | local_error = NULL; |
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213 | contents = g_key_file_to_data (backend->priv->key_file, &length, &local_error); |
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214 | if (local_error != NULL) { |
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215 | g_warning ("Unable to save settings: %s", local_error->message); |
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216 | g_error_free (local_error); |
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217 | return; |
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218 | } |
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219 | |
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220 | local_error = NULL; |
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221 | g_file_set_contents (backend->priv->filename, |
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222 | contents, |
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223 | length, |
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224 | &local_error); |
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225 | if (local_error != NULL) { |
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226 | g_warning ("Unable to save settings: %s", local_error->message); |
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227 | g_error_free (local_error); |
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228 | g_free (contents); |
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229 | return; |
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230 | } |
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231 | |
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232 | g_free (contents); |
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233 | |
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234 | backend->priv->dirty = FALSE; |
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235 | } |
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236 | |
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237 | static gboolean |
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238 | save_settings_timer (GdmSettingsDesktopBackend *backend) |
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239 | { |
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240 | save_settings (backend); |
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241 | backend->priv->save_id = 0; |
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242 | return FALSE; |
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243 | } |
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244 | |
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245 | static void |
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246 | queue_save (GdmSettingsDesktopBackend *backend) |
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247 | { |
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248 | if (! backend->priv->dirty) { |
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249 | return; |
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250 | } |
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251 | |
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252 | if (backend->priv->save_id != 0) { |
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253 | /* already pending */ |
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254 | return; |
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255 | } |
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256 | |
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257 | backend->priv->save_id = g_timeout_add_seconds (5, (GSourceFunc)save_settings_timer, backend); |
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258 | } |
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259 | |
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260 | static gboolean |
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261 | gdm_settings_desktop_backend_set_value (GdmSettingsBackend *backend, |
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262 | const char *key, |
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263 | const char *value, |
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264 | GError **error) |
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265 | { |
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266 | GError *local_error; |
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267 | char *old_val; |
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268 | char *g; |
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269 | char *k; |
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270 | char *l; |
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271 | |
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272 | g_return_val_if_fail (GDM_IS_SETTINGS_BACKEND (backend), FALSE); |
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273 | g_return_val_if_fail (key != NULL, FALSE); |
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274 | |
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275 | /*GDM_SETTINGS_BACKEND_CLASS (gdm_settings_desktop_backend_parent_class)->get_value (display);*/ |
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276 | if (! parse_key_string (key, &g, &k, &l, NULL)) { |
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277 | g_set_error (error, GDM_SETTINGS_BACKEND_ERROR, GDM_SETTINGS_BACKEND_ERROR_KEY_NOT_FOUND, "Key not found"); |
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278 | return FALSE; |
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279 | } |
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280 | |
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281 | local_error = NULL; |
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282 | old_val = g_key_file_get_value (GDM_SETTINGS_DESKTOP_BACKEND (backend)->priv->key_file, |
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283 | g, |
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284 | k, |
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285 | &local_error); |
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286 | if (local_error != NULL) { |
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287 | g_error_free (local_error); |
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288 | } |
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289 | |
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290 | /*g_debug ("Setting key: %s %s %s", g, k, l);*/ |
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291 | local_error = NULL; |
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292 | g_key_file_set_value (GDM_SETTINGS_DESKTOP_BACKEND (backend)->priv->key_file, |
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293 | g, |
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294 | k, |
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295 | value); |
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296 | |
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297 | GDM_SETTINGS_DESKTOP_BACKEND (backend)->priv->dirty = TRUE; |
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298 | queue_save (GDM_SETTINGS_DESKTOP_BACKEND (backend)); |
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299 | |
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300 | gdm_settings_backend_value_changed (backend, key, old_val, value); |
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301 | |
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302 | g_free (old_val); |
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303 | |
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304 | return TRUE; |
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305 | } |
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306 | |
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307 | static void |
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308 | gdm_settings_desktop_backend_class_init (GdmSettingsDesktopBackendClass *klass) |
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309 | { |
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310 | GObjectClass *object_class = G_OBJECT_CLASS (klass); |
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311 | GdmSettingsBackendClass *backend_class = GDM_SETTINGS_BACKEND_CLASS (klass); |
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312 | |
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313 | object_class->finalize = gdm_settings_desktop_backend_finalize; |
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314 | |
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315 | backend_class->get_value = gdm_settings_desktop_backend_get_value; |
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316 | backend_class->set_value = gdm_settings_desktop_backend_set_value; |
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317 | |
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318 | g_type_class_add_private (klass, sizeof (GdmSettingsDesktopBackendPrivate)); |
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319 | } |
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320 | |
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321 | static void |
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322 | gdm_settings_desktop_backend_init (GdmSettingsDesktopBackend *backend) |
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323 | { |
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324 | gboolean res; |
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325 | GError *error; |
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326 | |
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327 | backend->priv = GDM_SETTINGS_DESKTOP_BACKEND_GET_PRIVATE (backend); |
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328 | |
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329 | backend->priv->key_file = g_key_file_new (); |
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330 | backend->priv->filename = g_strdup (GDMCONFDIR "/custom.conf"); |
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331 | |
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332 | error = NULL; |
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333 | res = g_key_file_load_from_file (backend->priv->key_file, |
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334 | backend->priv->filename, |
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335 | G_KEY_FILE_KEEP_COMMENTS | G_KEY_FILE_KEEP_TRANSLATIONS, |
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336 | &error); |
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337 | if (! res) { |
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338 | g_warning ("Unable to load file '%s': %s", backend->priv->filename, error->message); |
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339 | } |
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340 | } |
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341 | |
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342 | static void |
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343 | gdm_settings_desktop_backend_finalize (GObject *object) |
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344 | { |
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345 | GdmSettingsDesktopBackend *backend; |
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346 | |
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347 | g_return_if_fail (object != NULL); |
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348 | g_return_if_fail (GDM_IS_SETTINGS_DESKTOP_BACKEND (object)); |
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349 | |
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350 | backend = GDM_SETTINGS_DESKTOP_BACKEND (object); |
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351 | |
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352 | g_return_if_fail (backend->priv != NULL); |
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353 | |
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354 | save_settings (backend); |
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355 | g_key_file_free (backend->priv->key_file); |
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356 | g_free (backend->priv->filename); |
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357 | |
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358 | G_OBJECT_CLASS (gdm_settings_desktop_backend_parent_class)->finalize (object); |
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359 | } |
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360 | |
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361 | GdmSettingsBackend * |
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362 | gdm_settings_desktop_backend_new (void) |
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363 | { |
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364 | GObject *object; |
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365 | |
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366 | object = g_object_new (GDM_TYPE_SETTINGS_DESKTOP_BACKEND, NULL); |
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367 | |
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368 | return GDM_SETTINGS_BACKEND (object); |
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369 | } |
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