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 | |
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26 | #include <glib.h> |
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27 | #include <glib/gi18n.h> |
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28 | #include <glib-object.h> |
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29 | |
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30 | #include "gdm-display-factory.h" |
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31 | #include "gdm-local-display-factory.h" |
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32 | #include "gdm-local-display-factory-glue.h" |
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33 | |
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34 | #include "gdm-display-store.h" |
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35 | #include "gdm-static-display.h" |
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36 | #include "gdm-transient-display.h" |
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37 | #include "gdm-static-factory-display.h" |
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38 | #include "gdm-product-display.h" |
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39 | |
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40 | #define GDM_LOCAL_DISPLAY_FACTORY_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), GDM_TYPE_LOCAL_DISPLAY_FACTORY, GdmLocalDisplayFactoryPrivate)) |
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41 | |
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42 | #define CK_SEAT1_PATH "/org/freedesktop/ConsoleKit/Seat1" |
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43 | |
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44 | #define GDM_DBUS_PATH "/org/gnome/DisplayManager" |
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45 | #define GDM_LOCAL_DISPLAY_FACTORY_DBUS_PATH GDM_DBUS_PATH "/LocalDisplayFactory" |
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46 | #define GDM_MANAGER_DBUS_NAME "org.gnome.DisplayManager.LocalDisplayFactory" |
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47 | |
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48 | #define HAL_DBUS_NAME "org.freedesktop.Hal" |
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49 | #define HAL_DBUS_MANAGER_PATH "/org/freedesktop/Hal/Manager" |
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50 | #define HAL_DBUS_MANAGER_INTERFACE "org.freedesktop.Hal.Manager" |
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51 | #define HAL_DBUS_DEVICE_INTERFACE "org.freedesktop.Hal.Device" |
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52 | #define SEAT_PCI_DEVICE_CLASS 3 |
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53 | |
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54 | #define MAX_DISPLAY_FAILURES 5 |
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55 | |
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56 | struct GdmLocalDisplayFactoryPrivate |
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57 | { |
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58 | DBusGConnection *connection; |
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59 | DBusGProxy *proxy; |
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60 | GHashTable *displays; |
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61 | |
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62 | /* FIXME: this needs to be per seat? */ |
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63 | guint num_failures; |
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64 | }; |
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65 | |
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66 | enum { |
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67 | PROP_0, |
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68 | }; |
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69 | |
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70 | static void gdm_local_display_factory_class_init (GdmLocalDisplayFactoryClass *klass); |
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71 | static void gdm_local_display_factory_init (GdmLocalDisplayFactory *factory); |
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72 | static void gdm_local_display_factory_finalize (GObject *object); |
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73 | |
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74 | static GdmDisplay *create_display (GdmLocalDisplayFactory *factory); |
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75 | |
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76 | static gpointer local_display_factory_object = NULL; |
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77 | |
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78 | G_DEFINE_TYPE (GdmLocalDisplayFactory, gdm_local_display_factory, GDM_TYPE_DISPLAY_FACTORY) |
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79 | |
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80 | GQuark |
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81 | gdm_local_display_factory_error_quark (void) |
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82 | { |
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83 | static GQuark ret = 0; |
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84 | if (ret == 0) { |
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85 | ret = g_quark_from_static_string ("gdm_local_display_factory_error"); |
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86 | } |
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87 | |
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88 | return ret; |
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89 | } |
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90 | |
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91 | static void |
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92 | listify_hash (gpointer key, |
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93 | GdmDisplay *display, |
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94 | GList **list) |
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95 | { |
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96 | *list = g_list_prepend (*list, key); |
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97 | } |
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98 | |
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99 | static int |
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100 | sort_nums (gpointer a, |
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101 | gpointer b) |
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102 | { |
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103 | guint32 num_a; |
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104 | guint32 num_b; |
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105 | |
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106 | num_a = GPOINTER_TO_UINT (a); |
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107 | num_b = GPOINTER_TO_UINT (b); |
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108 | |
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109 | if (num_a > num_b) { |
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110 | return 1; |
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111 | } else if (num_a < num_b) { |
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112 | return -1; |
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113 | } else { |
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114 | return 0; |
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115 | } |
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116 | } |
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117 | |
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118 | static guint32 |
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119 | take_next_display_number (GdmLocalDisplayFactory *factory) |
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120 | { |
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121 | GList *list; |
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122 | GList *l; |
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123 | guint32 ret; |
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124 | |
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125 | ret = 0; |
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126 | list = NULL; |
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127 | |
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128 | g_hash_table_foreach (factory->priv->displays, (GHFunc)listify_hash, &list); |
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129 | if (list == NULL) { |
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130 | goto out; |
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131 | } |
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132 | |
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133 | /* sort low to high */ |
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134 | list = g_list_sort (list, (GCompareFunc)sort_nums); |
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135 | |
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136 | g_debug ("GdmLocalDisplayFactory: Found the following X displays:"); |
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137 | for (l = list; l != NULL; l = l->next) { |
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138 | g_debug ("GdmLocalDisplayFactory: %u", GPOINTER_TO_UINT (l->data)); |
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139 | } |
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140 | |
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141 | for (l = list; l != NULL; l = l->next) { |
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142 | guint32 num; |
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143 | num = GPOINTER_TO_UINT (l->data); |
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144 | |
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145 | /* always fill zero */ |
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146 | if (l->prev == NULL && num != 0) { |
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147 | ret = 0; |
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148 | break; |
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149 | } |
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150 | /* now find the first hole */ |
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151 | if (l->next == NULL || GPOINTER_TO_UINT (l->next->data) != (num + 1)) { |
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152 | ret = num + 1; |
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153 | break; |
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154 | } |
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155 | } |
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156 | out: |
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157 | |
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158 | /* now reserve this number */ |
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159 | g_debug ("GdmLocalDisplayFactory: Reserving X display: %u", ret); |
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160 | g_hash_table_insert (factory->priv->displays, GUINT_TO_POINTER (ret), NULL); |
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161 | |
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162 | return ret; |
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163 | } |
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164 | |
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165 | static void |
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166 | on_display_disposed (GdmLocalDisplayFactory *factory, |
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167 | GdmDisplay *display) |
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168 | { |
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169 | g_debug ("GdmLocalDisplayFactory: Display %p disposed", display); |
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170 | } |
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171 | |
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172 | static void |
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173 | store_display (GdmLocalDisplayFactory *factory, |
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174 | guint32 num, |
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175 | GdmDisplay *display) |
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176 | { |
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177 | GdmDisplayStore *store; |
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178 | |
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179 | g_object_weak_ref (G_OBJECT (display), (GWeakNotify)on_display_disposed, factory); |
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180 | |
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181 | store = gdm_display_factory_get_display_store (GDM_DISPLAY_FACTORY (factory)); |
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182 | gdm_display_store_add (store, display); |
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183 | |
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184 | /* now fill our reserved spot */ |
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185 | g_hash_table_insert (factory->priv->displays, GUINT_TO_POINTER (num), NULL); |
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186 | } |
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187 | |
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188 | /* |
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189 | Example: |
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190 | dbus-send --system --dest=org.gnome.DisplayManager \ |
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191 | --type=method_call --print-reply --reply-timeout=2000 \ |
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192 | /org/gnome/DisplayManager/Manager \ |
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193 | org.gnome.DisplayManager.Manager.GetDisplays |
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194 | */ |
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195 | gboolean |
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196 | gdm_local_display_factory_create_transient_display (GdmLocalDisplayFactory *factory, |
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197 | char **id, |
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198 | GError **error) |
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199 | { |
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200 | gboolean ret; |
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201 | GdmDisplay *display; |
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202 | guint32 num; |
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203 | |
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204 | g_return_val_if_fail (GDM_IS_LOCAL_DISPLAY_FACTORY (factory), FALSE); |
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205 | |
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206 | ret = FALSE; |
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207 | |
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208 | num = take_next_display_number (factory); |
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209 | |
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210 | g_debug ("GdmLocalDisplayFactory: Creating transient display %d", num); |
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211 | |
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212 | display = gdm_transient_display_new (num); |
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213 | |
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214 | /* FIXME: don't hardcode seat1? */ |
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215 | g_object_set (display, "seat-id", CK_SEAT1_PATH, NULL); |
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216 | |
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217 | store_display (factory, num, display); |
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218 | |
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219 | if (! gdm_display_manage (display)) { |
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220 | display = NULL; |
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221 | goto out; |
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222 | } |
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223 | |
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224 | if (! gdm_display_get_id (display, id, NULL)) { |
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225 | display = NULL; |
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226 | goto out; |
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227 | } |
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228 | |
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229 | ret = TRUE; |
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230 | out: |
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231 | /* ref either held by store or not at all */ |
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232 | g_object_unref (display); |
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233 | |
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234 | return ret; |
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235 | } |
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236 | |
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237 | gboolean |
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238 | gdm_local_display_factory_create_product_display (GdmLocalDisplayFactory *factory, |
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239 | const char *parent_display_id, |
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240 | const char *relay_address, |
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241 | char **id, |
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242 | GError **error) |
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243 | { |
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244 | gboolean ret; |
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245 | GdmDisplay *display; |
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246 | guint32 num; |
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247 | |
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248 | g_return_val_if_fail (GDM_IS_LOCAL_DISPLAY_FACTORY (factory), FALSE); |
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249 | |
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250 | ret = FALSE; |
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251 | |
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252 | g_debug ("GdmLocalDisplayFactory: Creating product display parent %s address:%s", |
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253 | parent_display_id, relay_address); |
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254 | |
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255 | num = take_next_display_number (factory); |
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256 | |
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257 | g_debug ("GdmLocalDisplayFactory: got display num %u", num); |
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258 | |
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259 | display = gdm_product_display_new (num, relay_address); |
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260 | |
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261 | /* FIXME: don't hardcode seat1? */ |
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262 | g_object_set (display, "seat-id", CK_SEAT1_PATH, NULL); |
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263 | |
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264 | store_display (factory, num, display); |
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265 | |
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266 | if (! gdm_display_manage (display)) { |
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267 | display = NULL; |
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268 | goto out; |
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269 | } |
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270 | |
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271 | if (! gdm_display_get_id (display, id, NULL)) { |
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272 | display = NULL; |
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273 | goto out; |
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274 | } |
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275 | |
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276 | ret = TRUE; |
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277 | out: |
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278 | /* ref either held by store or not at all */ |
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279 | g_object_unref (display); |
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280 | |
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281 | return ret; |
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282 | } |
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283 | |
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284 | static void |
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285 | on_static_display_status_changed (GdmDisplay *display, |
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286 | GParamSpec *arg1, |
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287 | GdmLocalDisplayFactory *factory) |
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288 | { |
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289 | int status; |
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290 | GdmDisplayStore *store; |
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291 | int num; |
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292 | |
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293 | num = -1; |
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294 | gdm_display_get_x11_display_number (display, &num, NULL); |
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295 | g_assert (num != -1); |
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296 | |
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297 | store = gdm_display_factory_get_display_store (GDM_DISPLAY_FACTORY (factory)); |
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298 | |
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299 | status = gdm_display_get_status (display); |
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300 | |
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301 | g_debug ("GdmLocalDisplayFactory: static display status changed: %d", status); |
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302 | switch (status) { |
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303 | case GDM_DISPLAY_FINISHED: |
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304 | /* remove the display number from factory->priv->displays |
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305 | so that it may be reused */ |
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306 | g_hash_table_remove (factory->priv->displays, GUINT_TO_POINTER (num)); |
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307 | gdm_display_store_remove (store, display); |
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308 | /* reset num failures */ |
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309 | factory->priv->num_failures = 0; |
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310 | create_display (factory); |
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311 | break; |
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312 | case GDM_DISPLAY_FAILED: |
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313 | /* leave the display number in factory->priv->displays |
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314 | so that it doesn't get reused */ |
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315 | gdm_display_store_remove (store, display); |
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316 | factory->priv->num_failures++; |
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317 | if (factory->priv->num_failures > MAX_DISPLAY_FAILURES) { |
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318 | /* oh shit */ |
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319 | g_warning ("GdmLocalDisplayFactory: maximum number of X display failures reached: check X server log for errors"); |
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320 | exit (1); |
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321 | } |
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322 | |
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323 | create_display (factory); |
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324 | break; |
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325 | case GDM_DISPLAY_UNMANAGED: |
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326 | break; |
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327 | case GDM_DISPLAY_PREPARED: |
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328 | break; |
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329 | case GDM_DISPLAY_MANAGED: |
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330 | break; |
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331 | default: |
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332 | g_assert_not_reached (); |
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333 | break; |
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334 | } |
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335 | } |
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336 | |
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337 | static GdmDisplay * |
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338 | create_display (GdmLocalDisplayFactory *factory) |
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339 | { |
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340 | GdmDisplay *display; |
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341 | guint32 num; |
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342 | |
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343 | num = take_next_display_number (factory); |
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344 | |
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345 | #if 0 |
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346 | display = gdm_static_factory_display_new (num); |
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347 | #else |
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348 | display = gdm_static_display_new (num); |
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349 | #endif |
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350 | if (display == NULL) { |
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351 | g_warning ("Unable to create display: %d", num); |
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352 | return NULL; |
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353 | } |
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354 | |
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355 | /* FIXME: don't hardcode seat1? */ |
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356 | g_object_set (display, "seat-id", CK_SEAT1_PATH, NULL); |
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357 | |
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358 | g_signal_connect (display, |
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359 | "notify::status", |
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360 | G_CALLBACK (on_static_display_status_changed), |
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361 | factory); |
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362 | |
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363 | store_display (factory, num, display); |
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364 | |
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365 | /* let store own the ref */ |
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366 | g_object_unref (display); |
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367 | |
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368 | if (! gdm_display_manage (display)) { |
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369 | gdm_display_unmanage (display); |
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370 | } |
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371 | |
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372 | return display; |
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373 | } |
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374 | |
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375 | #if 0 |
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376 | static void |
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377 | create_display_for_device (GdmLocalDisplayFactory *factory, |
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378 | DBusGProxy *device_proxy) |
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379 | { |
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380 | create_display (factory); |
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381 | } |
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382 | |
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383 | static void |
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384 | create_displays_for_pci_devices (GdmLocalDisplayFactory *factory) |
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385 | { |
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386 | char **devices; |
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387 | const char *key; |
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388 | const char *value; |
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389 | GError *error; |
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390 | gboolean res; |
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391 | int i; |
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392 | |
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393 | g_debug ("GdmLocalDisplayFactory: Getting PCI seat devices"); |
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394 | |
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395 | key = "info.bus"; |
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396 | value = "pci"; |
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397 | |
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398 | devices = NULL; |
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399 | error = NULL; |
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400 | res = dbus_g_proxy_call (factory->priv->proxy, |
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401 | "FindDeviceStringMatch", |
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402 | &error, |
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403 | G_TYPE_STRING, key, |
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404 | G_TYPE_STRING, value, |
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405 | G_TYPE_INVALID, |
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406 | G_TYPE_STRV, &devices, |
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407 | G_TYPE_INVALID); |
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408 | if (! res) { |
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409 | g_warning ("Unable to query HAL: %s", error->message); |
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410 | g_error_free (error); |
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411 | } |
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412 | |
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413 | /* now look for pci class 3 */ |
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414 | key = "pci.device_class"; |
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415 | for (i = 0; devices [i] != NULL; i++) { |
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416 | DBusGProxy *device_proxy; |
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417 | int class_val; |
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418 | |
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419 | device_proxy = dbus_g_proxy_new_for_name (factory->priv->connection, |
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420 | HAL_DBUS_NAME, |
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421 | devices [i], |
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422 | HAL_DBUS_DEVICE_INTERFACE); |
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423 | if (device_proxy == NULL) { |
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424 | continue; |
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425 | } |
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426 | |
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427 | error = NULL; |
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428 | res = dbus_g_proxy_call (device_proxy, |
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429 | "GetPropertyInteger", |
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430 | &error, |
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431 | G_TYPE_STRING, key, |
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432 | G_TYPE_INVALID, |
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433 | G_TYPE_INT, &class_val, |
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434 | G_TYPE_INVALID); |
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435 | if (! res) { |
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436 | g_warning ("Unable to query HAL: %s", error->message); |
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437 | g_error_free (error); |
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438 | } |
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439 | |
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440 | if (class_val == SEAT_PCI_DEVICE_CLASS) { |
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441 | g_debug ("GdmLocalDisplayFactory: Found device: %s", devices [i]); |
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442 | create_display_for_device (factory, device_proxy); |
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443 | } |
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444 | |
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445 | g_object_unref (device_proxy); |
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446 | } |
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447 | |
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448 | g_strfreev (devices); |
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449 | } |
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450 | #endif |
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451 | |
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452 | static gboolean |
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453 | gdm_local_display_factory_start (GdmDisplayFactory *base_factory) |
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454 | { |
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455 | gboolean ret; |
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456 | GdmLocalDisplayFactory *factory = GDM_LOCAL_DISPLAY_FACTORY (base_factory); |
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457 | |
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458 | g_return_val_if_fail (GDM_IS_LOCAL_DISPLAY_FACTORY (factory), FALSE); |
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459 | |
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460 | ret = TRUE; |
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461 | |
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462 | /* FIXME: use seat configuration */ |
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463 | #if 0 |
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464 | create_displays_for_pci_devices (factory); |
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465 | #else |
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466 | create_display (factory); |
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467 | #endif |
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468 | |
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469 | return ret; |
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470 | } |
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471 | |
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472 | static gboolean |
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473 | gdm_local_display_factory_stop (GdmDisplayFactory *base_factory) |
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474 | { |
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475 | GdmLocalDisplayFactory *factory = GDM_LOCAL_DISPLAY_FACTORY (base_factory); |
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476 | |
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477 | g_return_val_if_fail (GDM_IS_LOCAL_DISPLAY_FACTORY (factory), FALSE); |
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478 | |
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479 | return TRUE; |
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480 | } |
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481 | |
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482 | static void |
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483 | gdm_local_display_factory_set_property (GObject *object, |
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484 | guint prop_id, |
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485 | const GValue *value, |
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486 | GParamSpec *pspec) |
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487 | { |
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488 | switch (prop_id) { |
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489 | default: |
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490 | G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); |
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491 | break; |
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492 | } |
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493 | } |
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494 | |
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495 | static void |
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496 | gdm_local_display_factory_get_property (GObject *object, |
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497 | guint prop_id, |
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498 | GValue *value, |
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499 | GParamSpec *pspec) |
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500 | { |
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501 | switch (prop_id) { |
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502 | default: |
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503 | G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); |
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504 | break; |
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505 | } |
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506 | } |
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507 | |
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508 | static gboolean |
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509 | register_factory (GdmLocalDisplayFactory *factory) |
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510 | { |
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511 | GError *error = NULL; |
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512 | |
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513 | error = NULL; |
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514 | factory->priv->connection = dbus_g_bus_get (DBUS_BUS_SYSTEM, &error); |
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515 | if (factory->priv->connection == NULL) { |
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516 | if (error != NULL) { |
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517 | g_critical ("error getting system bus: %s", error->message); |
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518 | g_error_free (error); |
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519 | } |
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520 | exit (1); |
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521 | } |
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522 | |
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523 | dbus_g_connection_register_g_object (factory->priv->connection, GDM_LOCAL_DISPLAY_FACTORY_DBUS_PATH, G_OBJECT (factory)); |
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524 | |
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525 | return TRUE; |
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526 | } |
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527 | |
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528 | static gboolean |
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529 | connect_to_hal (GdmLocalDisplayFactory *factory) |
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530 | { |
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531 | factory->priv->proxy = dbus_g_proxy_new_for_name (factory->priv->connection, |
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532 | HAL_DBUS_NAME, |
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533 | HAL_DBUS_MANAGER_PATH, |
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534 | HAL_DBUS_MANAGER_INTERFACE); |
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535 | if (factory->priv->proxy == NULL) { |
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536 | g_warning ("Couldn't create proxy for HAL Manager"); |
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537 | return FALSE; |
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538 | } |
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539 | |
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540 | return TRUE; |
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541 | } |
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542 | |
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543 | static void |
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544 | disconnect_from_hal (GdmLocalDisplayFactory *factory) |
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545 | { |
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546 | if (factory->priv->proxy == NULL) { |
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547 | g_object_unref (factory->priv->proxy); |
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548 | } |
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549 | } |
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550 | |
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551 | static GObject * |
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552 | gdm_local_display_factory_constructor (GType type, |
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553 | guint n_construct_properties, |
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554 | GObjectConstructParam *construct_properties) |
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555 | { |
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556 | GdmLocalDisplayFactory *factory; |
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557 | gboolean res; |
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558 | |
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559 | factory = GDM_LOCAL_DISPLAY_FACTORY (G_OBJECT_CLASS (gdm_local_display_factory_parent_class)->constructor (type, |
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560 | n_construct_properties, |
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561 | construct_properties)); |
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562 | |
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563 | res = register_factory (factory); |
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564 | if (! res) { |
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565 | g_warning ("Unable to register local display factory with system bus"); |
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566 | } |
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567 | |
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568 | connect_to_hal (factory); |
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569 | |
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570 | return G_OBJECT (factory); |
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571 | } |
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572 | |
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573 | static void |
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574 | gdm_local_display_factory_class_init (GdmLocalDisplayFactoryClass *klass) |
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575 | { |
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576 | GObjectClass *object_class = G_OBJECT_CLASS (klass); |
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577 | GdmDisplayFactoryClass *factory_class = GDM_DISPLAY_FACTORY_CLASS (klass); |
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578 | |
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579 | object_class->get_property = gdm_local_display_factory_get_property; |
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580 | object_class->set_property = gdm_local_display_factory_set_property; |
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581 | object_class->finalize = gdm_local_display_factory_finalize; |
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582 | object_class->constructor = gdm_local_display_factory_constructor; |
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583 | |
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584 | factory_class->start = gdm_local_display_factory_start; |
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585 | factory_class->stop = gdm_local_display_factory_stop; |
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586 | |
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587 | g_type_class_add_private (klass, sizeof (GdmLocalDisplayFactoryPrivate)); |
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588 | |
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589 | dbus_g_object_type_install_info (GDM_TYPE_LOCAL_DISPLAY_FACTORY, &dbus_glib_gdm_local_display_factory_object_info); |
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590 | } |
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591 | |
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592 | static void |
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593 | gdm_local_display_factory_init (GdmLocalDisplayFactory *factory) |
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594 | { |
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595 | factory->priv = GDM_LOCAL_DISPLAY_FACTORY_GET_PRIVATE (factory); |
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596 | |
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597 | factory->priv->displays = g_hash_table_new (NULL, NULL); |
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598 | } |
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599 | |
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600 | static void |
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601 | gdm_local_display_factory_finalize (GObject *object) |
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602 | { |
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603 | GdmLocalDisplayFactory *factory; |
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604 | |
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605 | g_return_if_fail (object != NULL); |
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606 | g_return_if_fail (GDM_IS_LOCAL_DISPLAY_FACTORY (object)); |
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607 | |
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608 | factory = GDM_LOCAL_DISPLAY_FACTORY (object); |
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609 | |
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610 | g_return_if_fail (factory->priv != NULL); |
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611 | |
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612 | g_hash_table_destroy (factory->priv->displays); |
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613 | |
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614 | disconnect_from_hal (factory); |
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615 | |
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616 | G_OBJECT_CLASS (gdm_local_display_factory_parent_class)->finalize (object); |
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617 | } |
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618 | |
---|
619 | GdmLocalDisplayFactory * |
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620 | gdm_local_display_factory_new (GdmDisplayStore *store) |
---|
621 | { |
---|
622 | if (local_display_factory_object != NULL) { |
---|
623 | g_object_ref (local_display_factory_object); |
---|
624 | } else { |
---|
625 | local_display_factory_object = g_object_new (GDM_TYPE_LOCAL_DISPLAY_FACTORY, |
---|
626 | "display-store", store, |
---|
627 | NULL); |
---|
628 | g_object_add_weak_pointer (local_display_factory_object, |
---|
629 | (gpointer *) &local_display_factory_object); |
---|
630 | } |
---|
631 | |
---|
632 | return GDM_LOCAL_DISPLAY_FACTORY (local_display_factory_object); |
---|
633 | } |
---|