1 | /* GConf |
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2 | * Copyright (C) 1999, 2000 Red Hat Inc. |
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3 | * Developed by Havoc Pennington, some code in here borrowed from |
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4 | * gnome-name-server and libgnorba (Elliot Lee) |
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5 | * |
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6 | * This library is free software; you can redistribute it and/or |
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7 | * modify it under the terms of the GNU Library General Public |
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8 | * License as published by the Free Software Foundation; either |
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9 | * version 2 of the License, or (at your option) any later version. |
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10 | * |
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11 | * This library is distributed in the hope that it will be useful, |
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12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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14 | * Library General Public License for more details. |
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15 | * |
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16 | * You should have received a copy of the GNU Library General Public |
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17 | * License along with this library; if not, write to the |
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18 | * Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
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19 | * Boston, MA 02111-1307, USA. |
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20 | */ |
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21 | |
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22 | |
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23 | /* |
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24 | * This is the per-user configuration daemon. |
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25 | * (has debug crap in it now) |
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26 | */ |
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27 | |
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28 | #include <config.h> |
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29 | |
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30 | #include "gconf-internals.h" |
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31 | #include "gconf-sources.h" |
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32 | #include "gconf-listeners.h" |
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33 | #include "gconf-locale.h" |
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34 | #include "gconf-schema.h" |
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35 | #include "gconf-glib-private.h" |
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36 | #include "gconf.h" |
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37 | #include "gconfd.h" |
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38 | #include "gconf-database.h" |
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39 | #include <orb/orbit.h> |
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40 | |
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41 | #include "GConf.h" |
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42 | |
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43 | #include <sys/types.h> |
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44 | #include <stdio.h> |
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45 | #include <stdlib.h> |
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46 | #include <string.h> |
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47 | #include <signal.h> |
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48 | #include <unistd.h> |
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49 | #include <sys/stat.h> |
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50 | #include <fcntl.h> |
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51 | #include <errno.h> |
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52 | #include <ctype.h> |
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53 | #include <syslog.h> |
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54 | #include <time.h> |
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55 | |
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56 | /* This makes hash table safer when debugging */ |
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57 | #ifndef GCONF_ENABLE_DEBUG |
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58 | #define safe_g_hash_table_insert g_hash_table_insert |
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59 | #else |
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60 | static void |
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61 | safe_g_hash_table_insert(GHashTable* ht, gpointer key, gpointer value) |
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62 | { |
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63 | gpointer oldkey = NULL, oldval = NULL; |
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64 | |
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65 | if (g_hash_table_lookup_extended(ht, key, &oldkey, &oldval)) |
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66 | { |
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67 | gconf_log(GCL_WARNING, "Hash key `%s' is already in the table!", |
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68 | (gchar*) key); |
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69 | return; |
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70 | } |
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71 | else |
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72 | { |
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73 | g_hash_table_insert(ht, key, value); |
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74 | } |
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75 | } |
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76 | #endif |
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77 | |
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78 | /* |
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79 | * Declarations |
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80 | */ |
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81 | |
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82 | static void gconf_main (void); |
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83 | static void gconf_main_quit (void); |
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84 | static gboolean gconf_main_is_running (void); |
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85 | |
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86 | static void logfile_save (void); |
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87 | static void logfile_read (void); |
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88 | static void log_client_add (const ConfigListener client); |
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89 | static void log_client_remove (const ConfigListener client); |
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90 | |
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91 | static void add_client (const ConfigListener client); |
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92 | static void remove_client (const ConfigListener client); |
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93 | static GSList *list_clients (void); |
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94 | static void log_clients_to_string (GString *str); |
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95 | static void drop_old_clients (void); |
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96 | static guint client_count (void); |
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97 | |
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98 | static void enter_shutdown (void); |
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99 | |
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100 | static void init_databases (void); |
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101 | static void shutdown_databases (void); |
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102 | static void set_default_database (GConfDatabase* db); |
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103 | static void register_database (GConfDatabase* db); |
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104 | static void unregister_database (GConfDatabase* db); |
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105 | static GConfDatabase* lookup_database (const gchar *address); |
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106 | static GConfDatabase* obtain_database (const gchar *address, |
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107 | GError **err); |
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108 | static void drop_old_databases (void); |
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109 | static gboolean no_databases_in_use (void); |
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110 | |
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111 | /* |
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112 | * Flag indicating that we are shutting down, so return errors |
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113 | * on any attempted operation. We do this instead of unregistering with |
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114 | * OAF or deactivating the server object, because we want to avoid |
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115 | * another gconfd starting up before we finish shutting down. |
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116 | */ |
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117 | |
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118 | static gboolean in_shutdown = FALSE; |
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119 | |
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120 | /* |
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121 | * CORBA goo |
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122 | */ |
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123 | |
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124 | static ConfigServer server = CORBA_OBJECT_NIL; |
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125 | static PortableServer_POA the_poa; |
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126 | static GConfLock *daemon_lock = NULL; |
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127 | |
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128 | static ConfigDatabase |
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129 | gconfd_get_default_database(PortableServer_Servant servant, |
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130 | CORBA_Environment* ev); |
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131 | |
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132 | static ConfigDatabase |
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133 | gconfd_get_database(PortableServer_Servant servant, |
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134 | const CORBA_char* address, |
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135 | CORBA_Environment* ev); |
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136 | |
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137 | static void |
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138 | gconfd_add_client (PortableServer_Servant servant, |
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139 | const ConfigListener client, |
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140 | CORBA_Environment *ev); |
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141 | |
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142 | static void |
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143 | gconfd_remove_client (PortableServer_Servant servant, |
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144 | const ConfigListener client, |
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145 | CORBA_Environment *ev); |
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146 | |
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147 | static CORBA_long |
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148 | gconfd_ping(PortableServer_Servant servant, CORBA_Environment *ev); |
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149 | |
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150 | static void |
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151 | gconfd_shutdown(PortableServer_Servant servant, CORBA_Environment *ev); |
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152 | |
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153 | static PortableServer_ServantBase__epv base_epv = { |
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154 | NULL, |
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155 | NULL, |
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156 | NULL |
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157 | }; |
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158 | |
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159 | static POA_ConfigServer__epv server_epv = { |
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160 | NULL, |
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161 | gconfd_get_default_database, |
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162 | gconfd_get_database, |
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163 | gconfd_add_client, |
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164 | gconfd_remove_client, |
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165 | gconfd_ping, |
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166 | gconfd_shutdown |
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167 | }; |
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168 | |
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169 | static POA_ConfigServer__vepv poa_server_vepv = { &base_epv, &server_epv }; |
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170 | static POA_ConfigServer poa_server_servant = { NULL, &poa_server_vepv }; |
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171 | |
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172 | static ConfigDatabase |
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173 | gconfd_get_default_database(PortableServer_Servant servant, |
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174 | CORBA_Environment* ev) |
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175 | { |
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176 | GConfDatabase *db; |
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177 | |
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178 | if (gconfd_check_in_shutdown (ev)) |
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179 | return CORBA_OBJECT_NIL; |
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180 | |
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181 | db = lookup_database (NULL); |
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182 | |
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183 | if (db) |
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184 | return CORBA_Object_duplicate (db->objref, ev); |
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185 | else |
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186 | return CORBA_OBJECT_NIL; |
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187 | } |
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188 | |
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189 | static ConfigDatabase |
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190 | gconfd_get_database(PortableServer_Servant servant, |
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191 | const CORBA_char* address, |
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192 | CORBA_Environment* ev) |
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193 | { |
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194 | GConfDatabase *db; |
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195 | GError* error = NULL; |
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196 | |
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197 | if (gconfd_check_in_shutdown (ev)) |
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198 | return CORBA_OBJECT_NIL; |
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199 | |
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200 | db = obtain_database (address, &error); |
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201 | |
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202 | if (db != NULL) |
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203 | return CORBA_Object_duplicate (db->objref, ev); |
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204 | else if (gconf_set_exception(&error, ev)) |
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205 | return CORBA_OBJECT_NIL; |
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206 | else |
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207 | return CORBA_OBJECT_NIL; |
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208 | } |
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209 | |
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210 | static void |
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211 | gconfd_add_client (PortableServer_Servant servant, |
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212 | const ConfigListener client, |
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213 | CORBA_Environment *ev) |
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214 | { |
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215 | if (gconfd_check_in_shutdown (ev)) |
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216 | return; |
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217 | |
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218 | add_client (client); |
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219 | } |
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220 | |
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221 | static void |
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222 | gconfd_remove_client (PortableServer_Servant servant, |
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223 | const ConfigListener client, |
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224 | CORBA_Environment *ev) |
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225 | { |
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226 | if (gconfd_check_in_shutdown (ev)) |
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227 | return; |
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228 | |
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229 | remove_client (client); |
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230 | } |
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231 | |
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232 | static CORBA_long |
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233 | gconfd_ping(PortableServer_Servant servant, CORBA_Environment *ev) |
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234 | { |
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235 | if (gconfd_check_in_shutdown (ev)) |
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236 | return 0; |
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237 | |
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238 | return getpid(); |
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239 | } |
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240 | |
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241 | static void |
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242 | gconfd_shutdown(PortableServer_Servant servant, CORBA_Environment *ev) |
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243 | { |
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244 | if (gconfd_check_in_shutdown (ev)) |
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245 | return; |
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246 | |
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247 | gconf_log(GCL_DEBUG, _("Shutdown request received")); |
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248 | |
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249 | gconf_main_quit(); |
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250 | } |
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251 | |
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252 | /* |
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253 | * Main code |
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254 | */ |
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255 | |
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256 | /* This needs to be called before we register with OAF |
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257 | */ |
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258 | static void |
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259 | gconf_server_load_sources(void) |
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260 | { |
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261 | gchar** addresses; |
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262 | GList* tmp; |
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263 | gboolean have_writable = FALSE; |
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264 | gchar* conffile; |
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265 | GConfSources* sources = NULL; |
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266 | GError* error = NULL; |
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267 | |
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268 | conffile = g_strconcat(GCONF_CONFDIR, "/path", NULL); |
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269 | |
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270 | addresses = gconf_load_source_path(conffile, NULL); |
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271 | |
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272 | g_free(conffile); |
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273 | |
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274 | #ifdef GCONF_ENABLE_DEBUG |
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275 | /* -- Debug only */ |
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276 | |
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277 | if (addresses == NULL) |
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278 | { |
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279 | gconf_log(GCL_DEBUG, _("gconfd compiled with debugging; trying to load gconf.path from the source directory")); |
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280 | conffile = g_strconcat(GCONF_SRCDIR, "/gconf/gconf.path", NULL); |
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281 | addresses = gconf_load_source_path(conffile, NULL); |
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282 | g_free(conffile); |
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283 | } |
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284 | |
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285 | /* -- End of Debug Only */ |
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286 | #endif |
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287 | |
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288 | if (addresses == NULL) |
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289 | { |
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290 | /* Try using the default address xml:readwrite:$(HOME)/.gconf */ |
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291 | addresses = g_new0(gchar*, 2); |
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292 | |
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293 | addresses[0] = g_strconcat("xml:readwrite:", g_get_home_dir(), "/.gconf", NULL); |
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294 | |
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295 | addresses[1] = NULL; |
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296 | |
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297 | gconf_log(GCL_DEBUG, _("No configuration files found, trying to use the default config source `%s'"), addresses[0]); |
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298 | } |
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299 | |
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300 | if (addresses == NULL) |
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301 | { |
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302 | /* We want to stay alive but do nothing, because otherwise every |
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303 | request would result in another failed gconfd being spawned. |
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304 | */ |
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305 | const gchar* empty_addr[] = { NULL }; |
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306 | gconf_log(GCL_ERR, _("No configuration sources in the source path, configuration won't be saved; edit "GCONF_CONFDIR"/path")); |
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307 | /* don't request error since there aren't any addresses */ |
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308 | sources = gconf_sources_new_from_addresses(empty_addr, NULL); |
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309 | |
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310 | /* Install the sources as the default database */ |
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311 | set_default_database (gconf_database_new(sources)); |
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312 | } |
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313 | else |
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314 | { |
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315 | sources = gconf_sources_new_from_addresses((const gchar**)addresses, |
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316 | &error); |
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317 | |
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318 | if (error != NULL) |
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319 | { |
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320 | gconf_log(GCL_ERR, _("Error loading some config sources: %s"), |
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321 | error->message); |
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322 | |
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323 | g_error_free(error); |
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324 | error = NULL; |
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325 | } |
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326 | |
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327 | g_free(addresses); |
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328 | |
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329 | g_assert(sources != NULL); |
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330 | |
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331 | if (sources->sources == NULL) |
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332 | gconf_log(GCL_ERR, _("No config source addresses successfully resolved, can't load or store config data")); |
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333 | |
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334 | tmp = sources->sources; |
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335 | |
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336 | while (tmp != NULL) |
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337 | { |
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338 | if (((GConfSource*)tmp->data)->flags & GCONF_SOURCE_ALL_WRITEABLE) |
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339 | { |
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340 | have_writable = TRUE; |
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341 | break; |
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342 | } |
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343 | |
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344 | tmp = g_list_next(tmp); |
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345 | } |
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346 | |
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347 | /* In this case, some sources may still return TRUE from their writable() function */ |
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348 | if (!have_writable) |
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349 | gconf_log(GCL_WARNING, _("No writable config sources successfully resolved, may not be able to save some configuration changes")); |
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350 | |
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351 | |
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352 | /* Install the sources as the default database */ |
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353 | set_default_database (gconf_database_new(sources)); |
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354 | } |
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355 | } |
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356 | |
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357 | static void |
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358 | signal_handler (int signo) |
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359 | { |
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360 | static gint in_fatal = 0; |
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361 | |
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362 | /* avoid loops */ |
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363 | if (in_fatal > 0) |
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364 | return; |
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365 | |
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366 | ++in_fatal; |
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367 | |
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368 | switch(signo) { |
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369 | /* Fast cleanup only */ |
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370 | case SIGSEGV: |
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371 | case SIGBUS: |
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372 | case SIGILL: |
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373 | enter_shutdown (); |
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374 | gconf_log(GCL_ERR, |
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375 | _("Received signal %d, dumping core. Please report a GConf bug."), |
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376 | signo); |
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377 | abort (); |
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378 | break; |
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379 | |
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380 | case SIGFPE: |
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381 | case SIGPIPE: |
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382 | /* Go ahead and try the full cleanup on these, |
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383 | * though it could well not work out very well. |
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384 | */ |
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385 | enter_shutdown (); |
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386 | |
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387 | /* let the fatal signals interrupt us */ |
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388 | --in_fatal; |
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389 | |
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390 | gconf_log (GCL_ERR, |
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391 | _("Received signal %d, shutting down abnormally. Please file a GConf bug report."), |
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392 | signo); |
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393 | |
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394 | |
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395 | if (gconf_main_is_running ()) |
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396 | gconf_main_quit (); |
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397 | |
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398 | break; |
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399 | |
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400 | case SIGTERM: |
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401 | case SIGHUP: |
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402 | enter_shutdown (); |
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403 | |
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404 | /* let the fatal signals interrupt us */ |
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405 | --in_fatal; |
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406 | |
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407 | gconf_log (GCL_INFO, |
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408 | _("Received signal %d, shutting down cleanly"), signo); |
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409 | |
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410 | if (gconf_main_is_running ()) |
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411 | gconf_main_quit (); |
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412 | break; |
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413 | |
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414 | case SIGUSR1: |
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415 | /* it'd be nice to log a message here but it's not very safe, so */ |
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416 | gconf_log_debug_messages = !gconf_log_debug_messages; |
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417 | break; |
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418 | |
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419 | default: |
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420 | break; |
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421 | } |
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422 | } |
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423 | |
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424 | PortableServer_POA |
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425 | gconf_get_poa () |
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426 | { |
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427 | return the_poa; |
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428 | } |
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429 | |
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430 | static void |
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431 | log_handler (const gchar *log_domain, |
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432 | GLogLevelFlags log_level, |
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433 | const gchar *message, |
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434 | gpointer user_data) |
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435 | { |
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436 | GConfLogPriority pri = GCL_WARNING; |
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437 | |
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438 | switch (log_level) |
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439 | { |
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440 | case G_LOG_LEVEL_ERROR: |
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441 | case G_LOG_LEVEL_CRITICAL: |
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442 | pri = GCL_ERR; |
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443 | break; |
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444 | |
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445 | case G_LOG_LEVEL_WARNING: |
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446 | pri = GCL_WARNING; |
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447 | break; |
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448 | |
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449 | case G_LOG_LEVEL_MESSAGE: |
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450 | case G_LOG_LEVEL_INFO: |
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451 | pri = GCL_INFO; |
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452 | break; |
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453 | |
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454 | case G_LOG_LEVEL_DEBUG: |
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455 | pri = GCL_DEBUG; |
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456 | break; |
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457 | |
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458 | default: |
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459 | break; |
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460 | } |
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461 | |
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462 | gconf_log (pri, "%s", message); |
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463 | } |
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464 | |
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465 | int |
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466 | main(int argc, char** argv) |
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467 | { |
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468 | struct sigaction act; |
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469 | sigset_t empty_mask; |
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470 | /* PortableServer_ObjectId objid = {0, sizeof("ConfigServer"), "ConfigServer"}; */ |
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471 | PortableServer_ObjectId* objid; |
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472 | CORBA_Environment ev; |
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473 | CORBA_ORB orb; |
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474 | gchar* logname; |
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475 | const gchar* username; |
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476 | guint len; |
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477 | gchar* ior; |
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478 | int exit_code = 0; |
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479 | GError *err; |
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480 | char *lock_dir; |
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481 | char *gconfd_dir; |
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482 | int dev_null_fd; |
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483 | int write_byte_fd; |
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484 | |
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485 | /* Now this is an argument parser */ |
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486 | if (argc > 1) |
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487 | write_byte_fd = atoi (argv[1]); |
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488 | else |
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489 | write_byte_fd = -1; |
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490 | |
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491 | chdir ("/"); |
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492 | |
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493 | /* This is so we don't prevent unmounting of devices. We divert |
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494 | * all messages to syslog |
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495 | */ |
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496 | |
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497 | if (!g_getenv ("GCONF_DEBUG_OUTPUT")) |
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498 | { |
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499 | dev_null_fd = open ("/dev/null", O_RDWR); |
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500 | if (dev_null_fd >= 0) |
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501 | { |
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502 | dup2 (dev_null_fd, 0); |
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503 | dup2 (dev_null_fd, 1); |
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504 | dup2 (dev_null_fd, 2); |
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505 | } |
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506 | } |
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507 | |
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508 | umask (022); |
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509 | |
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510 | gconf_set_daemon_mode(TRUE); |
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511 | |
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512 | /* Logs */ |
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513 | username = g_get_user_name(); |
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514 | len = strlen(username) + strlen("gconfd") + 15; |
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515 | logname = g_malloc(len); |
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516 | g_snprintf(logname, len, "gconfd (%s-%u)", username, (guint)getpid()); |
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517 | |
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518 | openlog (logname, LOG_NDELAY, LOG_USER); |
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519 | |
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520 | g_log_set_handler (NULL, G_LOG_LEVEL_MASK | G_LOG_FLAG_FATAL | G_LOG_FLAG_RECURSION, |
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521 | log_handler, NULL); |
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522 | |
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523 | /* openlog() does not copy logname - what total brokenness. |
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524 | So we free it at the end of main() */ |
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525 | |
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526 | gconf_log (GCL_INFO, _("starting (version %s), pid %u user '%s'"), |
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527 | VERSION, (guint)getpid(), g_get_user_name()); |
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528 | |
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529 | #ifdef GCONF_ENABLE_DEBUG |
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530 | gconf_log (GCL_DEBUG, "GConf was built with debugging features enabled"); |
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531 | #endif |
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532 | |
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533 | /* Session setup */ |
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534 | sigemptyset (&empty_mask); |
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535 | act.sa_handler = signal_handler; |
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536 | act.sa_mask = empty_mask; |
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537 | act.sa_flags = 0; |
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538 | sigaction (SIGTERM, &act, 0); |
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539 | sigaction (SIGILL, &act, 0); |
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540 | sigaction (SIGBUS, &act, 0); |
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541 | sigaction (SIGFPE, &act, 0); |
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542 | sigaction (SIGHUP, &act, 0); |
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543 | sigaction (SIGSEGV, &act, 0); |
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544 | sigaction (SIGABRT, &act, 0); |
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545 | |
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546 | act.sa_handler = SIG_IGN; |
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547 | sigaction (SIGINT, &act, 0); |
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548 | |
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549 | CORBA_exception_init(&ev); |
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550 | |
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551 | init_databases (); |
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552 | |
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553 | orb = gconf_orb_get(); |
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554 | |
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555 | POA_ConfigServer__init(&poa_server_servant, &ev); |
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556 | |
---|
557 | the_poa = (PortableServer_POA)CORBA_ORB_resolve_initial_references(orb, "RootPOA", &ev); |
---|
558 | PortableServer_POAManager_activate(PortableServer_POA__get_the_POAManager(the_poa, &ev), &ev); |
---|
559 | |
---|
560 | objid = PortableServer_POA_activate_object(the_poa, &poa_server_servant, &ev); |
---|
561 | |
---|
562 | server = PortableServer_POA_servant_to_reference(the_poa, |
---|
563 | &poa_server_servant, |
---|
564 | &ev); |
---|
565 | if (CORBA_Object_is_nil(server, &ev)) |
---|
566 | { |
---|
567 | gconf_log(GCL_ERR, _("Failed to get object reference for ConfigServer")); |
---|
568 | return 1; |
---|
569 | } |
---|
570 | |
---|
571 | /* Needs to be done before loading sources */ |
---|
572 | ior = CORBA_ORB_object_to_string (orb, server, &ev); |
---|
573 | gconf_set_daemon_ior (ior); |
---|
574 | CORBA_free (ior); |
---|
575 | |
---|
576 | gconfd_dir = gconf_get_daemon_dir (); |
---|
577 | lock_dir = gconf_get_lock_dir (); |
---|
578 | |
---|
579 | if (mkdir (gconfd_dir, 0700) < 0 && errno != EEXIST) |
---|
580 | gconf_log (GCL_WARNING, _("Failed to create %s: %s"), |
---|
581 | gconfd_dir, g_strerror (errno)); |
---|
582 | |
---|
583 | |
---|
584 | err = NULL; |
---|
585 | daemon_lock = gconf_get_lock (lock_dir, &err); |
---|
586 | |
---|
587 | if (daemon_lock != NULL) |
---|
588 | { |
---|
589 | /* This loads backends and so on. It needs to be done before |
---|
590 | * we can handle any requests, so before we hit the |
---|
591 | * main loop. if daemon_lock == NULL we won't hit the |
---|
592 | * main loop. |
---|
593 | */ |
---|
594 | gconf_server_load_sources (); |
---|
595 | } |
---|
596 | |
---|
597 | /* notify caller that we're done either getting the lock |
---|
598 | * or not getting it |
---|
599 | */ |
---|
600 | if (write_byte_fd >= 0) |
---|
601 | { |
---|
602 | char buf[1] = { 'g' }; |
---|
603 | if (write (write_byte_fd, buf, 1) != 1) |
---|
604 | { |
---|
605 | gconf_log (GCL_ERR, _("Failed to write byte to pipe fd %d so client program may hang: %s"), write_byte_fd, g_strerror (errno)); |
---|
606 | } |
---|
607 | |
---|
608 | close (write_byte_fd); |
---|
609 | } |
---|
610 | |
---|
611 | if (daemon_lock == NULL) |
---|
612 | { |
---|
613 | g_assert (err); |
---|
614 | |
---|
615 | gconf_log (GCL_WARNING, _("Failed to get lock for daemon, exiting: %s"), |
---|
616 | err->message); |
---|
617 | g_error_free (err); |
---|
618 | |
---|
619 | enter_shutdown (); |
---|
620 | shutdown_databases (); |
---|
621 | |
---|
622 | return 1; |
---|
623 | } |
---|
624 | |
---|
625 | /* Read saved log file, if any */ |
---|
626 | logfile_read (); |
---|
627 | |
---|
628 | gconf_main (); |
---|
629 | |
---|
630 | if (in_shutdown) |
---|
631 | exit_code = 1; /* means someone already called enter_shutdown() */ |
---|
632 | |
---|
633 | /* This starts bouncing all incoming requests (and we aren't running |
---|
634 | * the main loop anyway, so they won't get processed) |
---|
635 | */ |
---|
636 | enter_shutdown (); |
---|
637 | |
---|
638 | /* Save current state in logfile (may compress the logfile a good |
---|
639 | * bit) |
---|
640 | */ |
---|
641 | logfile_save (); |
---|
642 | |
---|
643 | shutdown_databases (); |
---|
644 | |
---|
645 | gconfd_locale_cache_drop (); |
---|
646 | |
---|
647 | /* Now we can release the lock */ |
---|
648 | |
---|
649 | server = CORBA_OBJECT_NIL; |
---|
650 | |
---|
651 | if (daemon_lock) |
---|
652 | { |
---|
653 | err = NULL; |
---|
654 | gconf_release_lock (daemon_lock, &err); |
---|
655 | if (err != NULL) |
---|
656 | { |
---|
657 | gconf_log (GCL_WARNING, _("Error releasing lockfile: %s"), |
---|
658 | err->message); |
---|
659 | g_error_free (err); |
---|
660 | } |
---|
661 | } |
---|
662 | |
---|
663 | daemon_lock = NULL; |
---|
664 | |
---|
665 | gconf_log (GCL_INFO, _("Exiting")); |
---|
666 | |
---|
667 | g_free (logname); |
---|
668 | |
---|
669 | return exit_code; |
---|
670 | } |
---|
671 | |
---|
672 | /* |
---|
673 | * Main loop |
---|
674 | */ |
---|
675 | |
---|
676 | static GSList* main_loops = NULL; |
---|
677 | static guint timeout_id = 0; |
---|
678 | static gboolean need_log_cleanup = FALSE; |
---|
679 | |
---|
680 | static gboolean |
---|
681 | periodic_cleanup_timeout(gpointer data) |
---|
682 | { |
---|
683 | gconf_log (GCL_DEBUG, "Performing periodic cleanup, expiring cache cruft"); |
---|
684 | |
---|
685 | drop_old_clients (); |
---|
686 | drop_old_databases (); |
---|
687 | |
---|
688 | if (no_databases_in_use () && client_count () == 0) |
---|
689 | { |
---|
690 | gconf_log (GCL_INFO, _("GConf server is not in use, shutting down.")); |
---|
691 | gconf_main_quit (); |
---|
692 | return FALSE; |
---|
693 | } |
---|
694 | |
---|
695 | /* expire old locale cache entries */ |
---|
696 | gconfd_locale_cache_expire (); |
---|
697 | |
---|
698 | if (!need_log_cleanup) |
---|
699 | { |
---|
700 | gconf_log (GCL_DEBUG, "No log file saving needed in periodic cleanup handler"); |
---|
701 | return TRUE; |
---|
702 | } |
---|
703 | |
---|
704 | /* Compress the running state file */ |
---|
705 | logfile_save (); |
---|
706 | |
---|
707 | need_log_cleanup = FALSE; |
---|
708 | |
---|
709 | return TRUE; |
---|
710 | } |
---|
711 | |
---|
712 | void |
---|
713 | gconfd_need_log_cleanup (void) |
---|
714 | { |
---|
715 | need_log_cleanup = TRUE; |
---|
716 | } |
---|
717 | |
---|
718 | static void |
---|
719 | gconf_main(void) |
---|
720 | { |
---|
721 | GMainLoop* loop; |
---|
722 | |
---|
723 | loop = g_main_new(TRUE); |
---|
724 | |
---|
725 | if (main_loops == NULL) |
---|
726 | { |
---|
727 | #ifdef GCONF_ENABLE_DEBUG |
---|
728 | gulong timeout_len = 1000*60*1; /* 1 sec * 60 s/min * 1 min */ |
---|
729 | #else |
---|
730 | gulong timeout_len = 1000*60*15; /* 1 sec * 60 s/min * 2 min */ |
---|
731 | #endif |
---|
732 | |
---|
733 | g_assert(timeout_id == 0); |
---|
734 | timeout_id = g_timeout_add (timeout_len, |
---|
735 | periodic_cleanup_timeout, |
---|
736 | NULL); |
---|
737 | |
---|
738 | } |
---|
739 | |
---|
740 | main_loops = g_slist_prepend(main_loops, loop); |
---|
741 | |
---|
742 | g_main_run(loop); |
---|
743 | |
---|
744 | main_loops = g_slist_remove(main_loops, loop); |
---|
745 | |
---|
746 | if (main_loops == NULL) |
---|
747 | { |
---|
748 | g_assert(timeout_id != 0); |
---|
749 | g_source_remove(timeout_id); |
---|
750 | timeout_id = 0; |
---|
751 | } |
---|
752 | |
---|
753 | g_main_destroy(loop); |
---|
754 | } |
---|
755 | |
---|
756 | static void |
---|
757 | gconf_main_quit(void) |
---|
758 | { |
---|
759 | g_return_if_fail(main_loops != NULL); |
---|
760 | |
---|
761 | g_main_quit(main_loops->data); |
---|
762 | } |
---|
763 | |
---|
764 | static gboolean |
---|
765 | gconf_main_is_running (void) |
---|
766 | { |
---|
767 | return main_loops != NULL; |
---|
768 | } |
---|
769 | |
---|
770 | /* |
---|
771 | * Database storage |
---|
772 | */ |
---|
773 | |
---|
774 | static GList* db_list = NULL; |
---|
775 | static GHashTable* dbs_by_address = NULL; |
---|
776 | static GConfDatabase *default_db = NULL; |
---|
777 | |
---|
778 | static void |
---|
779 | init_databases (void) |
---|
780 | { |
---|
781 | gconfd_need_log_cleanup (); |
---|
782 | |
---|
783 | g_assert(db_list == NULL); |
---|
784 | g_assert(dbs_by_address == NULL); |
---|
785 | |
---|
786 | dbs_by_address = g_hash_table_new (g_str_hash, g_str_equal); |
---|
787 | |
---|
788 | /* Default database isn't in the address hash since it has |
---|
789 | multiple addresses in a stack |
---|
790 | */ |
---|
791 | } |
---|
792 | |
---|
793 | static void |
---|
794 | set_default_database (GConfDatabase* db) |
---|
795 | { |
---|
796 | gconfd_need_log_cleanup (); |
---|
797 | |
---|
798 | default_db = db; |
---|
799 | |
---|
800 | /* Default database isn't in the address hash since it has |
---|
801 | multiple addresses in a stack |
---|
802 | */ |
---|
803 | } |
---|
804 | |
---|
805 | static void |
---|
806 | register_database (GConfDatabase *db) |
---|
807 | { |
---|
808 | gconfd_need_log_cleanup (); |
---|
809 | |
---|
810 | if (db->sources->sources) |
---|
811 | safe_g_hash_table_insert(dbs_by_address, |
---|
812 | ((GConfSource*)db->sources->sources->data)->address, |
---|
813 | db); |
---|
814 | |
---|
815 | db_list = g_list_prepend (db_list, db); |
---|
816 | } |
---|
817 | |
---|
818 | static void |
---|
819 | unregister_database (GConfDatabase *db) |
---|
820 | { |
---|
821 | gconfd_need_log_cleanup (); |
---|
822 | |
---|
823 | if (db->sources->sources) |
---|
824 | g_hash_table_remove(dbs_by_address, |
---|
825 | ((GConfSource*)(db->sources->sources->data))->address); |
---|
826 | |
---|
827 | db_list = g_list_remove (db_list, db); |
---|
828 | |
---|
829 | gconf_database_free (db); |
---|
830 | } |
---|
831 | |
---|
832 | static GConfDatabase* |
---|
833 | lookup_database (const gchar *address) |
---|
834 | { |
---|
835 | if (address == NULL) |
---|
836 | return default_db; |
---|
837 | else |
---|
838 | return g_hash_table_lookup (dbs_by_address, address); |
---|
839 | } |
---|
840 | |
---|
841 | static GConfDatabase* |
---|
842 | obtain_database (const gchar *address, |
---|
843 | GError **err) |
---|
844 | { |
---|
845 | |
---|
846 | GConfSources* sources; |
---|
847 | const gchar* addresses[] = { NULL, NULL }; |
---|
848 | GError* error = NULL; |
---|
849 | GConfDatabase *db; |
---|
850 | |
---|
851 | addresses[0] = address; |
---|
852 | db = lookup_database (address); |
---|
853 | |
---|
854 | if (db) |
---|
855 | return db; |
---|
856 | |
---|
857 | sources = gconf_sources_new_from_addresses(addresses, &error); |
---|
858 | |
---|
859 | if (error != NULL) |
---|
860 | { |
---|
861 | if (err) |
---|
862 | *err = error; |
---|
863 | else |
---|
864 | g_error_free (error); |
---|
865 | |
---|
866 | return NULL; |
---|
867 | } |
---|
868 | |
---|
869 | if (sources == NULL) |
---|
870 | return NULL; |
---|
871 | |
---|
872 | db = gconf_database_new (sources); |
---|
873 | |
---|
874 | register_database (db); |
---|
875 | |
---|
876 | return db; |
---|
877 | } |
---|
878 | |
---|
879 | static void |
---|
880 | drop_old_databases(void) |
---|
881 | { |
---|
882 | GList *tmp_list; |
---|
883 | GList *dead = NULL; |
---|
884 | GTime now; |
---|
885 | |
---|
886 | now = time(NULL); |
---|
887 | |
---|
888 | gconf_database_drop_dead_listeners (default_db); |
---|
889 | |
---|
890 | tmp_list = db_list; |
---|
891 | while (tmp_list) |
---|
892 | { |
---|
893 | GConfDatabase* db = tmp_list->data; |
---|
894 | |
---|
895 | /* Drop any listeners whose clients are gone. */ |
---|
896 | gconf_database_drop_dead_listeners (db); |
---|
897 | |
---|
898 | if (db->listeners && /* not already hibernating */ |
---|
899 | gconf_listeners_count(db->listeners) == 0 && /* Can hibernate */ |
---|
900 | (now - db->last_access) > (60*20)) /* 20 minutes without access */ |
---|
901 | { |
---|
902 | dead = g_list_prepend (dead, db); |
---|
903 | } |
---|
904 | |
---|
905 | tmp_list = g_list_next (tmp_list); |
---|
906 | } |
---|
907 | |
---|
908 | tmp_list = dead; |
---|
909 | while (tmp_list) |
---|
910 | { |
---|
911 | GConfDatabase* db = tmp_list->data; |
---|
912 | |
---|
913 | unregister_database (db); |
---|
914 | |
---|
915 | tmp_list = g_list_next (tmp_list); |
---|
916 | } |
---|
917 | |
---|
918 | g_list_free (dead); |
---|
919 | } |
---|
920 | |
---|
921 | static void |
---|
922 | shutdown_databases (void) |
---|
923 | { |
---|
924 | GList *tmp_list; |
---|
925 | |
---|
926 | /* This may be called before we init fully, |
---|
927 | * so check that everything != NULL |
---|
928 | */ |
---|
929 | |
---|
930 | tmp_list = db_list; |
---|
931 | |
---|
932 | while (tmp_list) |
---|
933 | { |
---|
934 | GConfDatabase *db = tmp_list->data; |
---|
935 | |
---|
936 | gconf_database_free (db); |
---|
937 | |
---|
938 | tmp_list = g_list_next (tmp_list); |
---|
939 | } |
---|
940 | |
---|
941 | g_list_free (db_list); |
---|
942 | db_list = NULL; |
---|
943 | |
---|
944 | if (dbs_by_address) |
---|
945 | g_hash_table_destroy(dbs_by_address); |
---|
946 | |
---|
947 | dbs_by_address = NULL; |
---|
948 | |
---|
949 | if (default_db) |
---|
950 | gconf_database_free (default_db); |
---|
951 | |
---|
952 | default_db = NULL; |
---|
953 | } |
---|
954 | |
---|
955 | static gboolean |
---|
956 | no_databases_in_use (void) |
---|
957 | { |
---|
958 | /* Only the default database still open, and |
---|
959 | * it has no listeners |
---|
960 | */ |
---|
961 | return db_list == NULL && |
---|
962 | gconf_listeners_count (default_db->listeners) == 0; |
---|
963 | } |
---|
964 | |
---|
965 | /* |
---|
966 | * Cleanup |
---|
967 | */ |
---|
968 | |
---|
969 | static void |
---|
970 | enter_shutdown(void) |
---|
971 | { |
---|
972 | in_shutdown = TRUE; |
---|
973 | } |
---|
974 | |
---|
975 | |
---|
976 | /* Exceptions */ |
---|
977 | |
---|
978 | gboolean |
---|
979 | gconf_set_exception(GError** error, |
---|
980 | CORBA_Environment* ev) |
---|
981 | { |
---|
982 | GConfError en; |
---|
983 | |
---|
984 | if (error == NULL) |
---|
985 | return FALSE; |
---|
986 | |
---|
987 | if (*error == NULL) |
---|
988 | return FALSE; |
---|
989 | |
---|
990 | en = (*error)->code; |
---|
991 | |
---|
992 | /* success is not supposed to get set */ |
---|
993 | g_return_val_if_fail(en != GCONF_ERROR_SUCCESS, FALSE); |
---|
994 | |
---|
995 | { |
---|
996 | ConfigException* ce; |
---|
997 | |
---|
998 | ce = ConfigException__alloc(); |
---|
999 | g_assert(error != NULL); |
---|
1000 | g_assert(*error != NULL); |
---|
1001 | g_assert((*error)->message != NULL); |
---|
1002 | ce->message = CORBA_string_dup((gchar*)(*error)->message); /* cast const */ |
---|
1003 | |
---|
1004 | switch (en) |
---|
1005 | { |
---|
1006 | case GCONF_ERROR_FAILED: |
---|
1007 | ce->err_no = ConfigFailed; |
---|
1008 | break; |
---|
1009 | case GCONF_ERROR_NO_PERMISSION: |
---|
1010 | ce->err_no = ConfigNoPermission; |
---|
1011 | break; |
---|
1012 | case GCONF_ERROR_BAD_ADDRESS: |
---|
1013 | ce->err_no = ConfigBadAddress; |
---|
1014 | break; |
---|
1015 | case GCONF_ERROR_BAD_KEY: |
---|
1016 | ce->err_no = ConfigBadKey; |
---|
1017 | break; |
---|
1018 | case GCONF_ERROR_PARSE_ERROR: |
---|
1019 | ce->err_no = ConfigParseError; |
---|
1020 | break; |
---|
1021 | case GCONF_ERROR_CORRUPT: |
---|
1022 | ce->err_no = ConfigCorrupt; |
---|
1023 | break; |
---|
1024 | case GCONF_ERROR_TYPE_MISMATCH: |
---|
1025 | ce->err_no = ConfigTypeMismatch; |
---|
1026 | break; |
---|
1027 | case GCONF_ERROR_IS_DIR: |
---|
1028 | ce->err_no = ConfigIsDir; |
---|
1029 | break; |
---|
1030 | case GCONF_ERROR_IS_KEY: |
---|
1031 | ce->err_no = ConfigIsKey; |
---|
1032 | break; |
---|
1033 | case GCONF_ERROR_NO_WRITABLE_DATABASE: |
---|
1034 | ce->err_no = ConfigNoWritableDatabase; |
---|
1035 | break; |
---|
1036 | case GCONF_ERROR_IN_SHUTDOWN: |
---|
1037 | ce->err_no = ConfigInShutdown; |
---|
1038 | break; |
---|
1039 | case GCONF_ERROR_OVERRIDDEN: |
---|
1040 | ce->err_no = ConfigOverridden; |
---|
1041 | break; |
---|
1042 | case GCONF_ERROR_LOCK_FAILED: |
---|
1043 | ce->err_no = ConfigLockFailed; |
---|
1044 | break; |
---|
1045 | |
---|
1046 | case GCONF_ERROR_OAF_ERROR: |
---|
1047 | case GCONF_ERROR_LOCAL_ENGINE: |
---|
1048 | case GCONF_ERROR_NO_SERVER: |
---|
1049 | case GCONF_ERROR_SUCCESS: |
---|
1050 | default: |
---|
1051 | gconf_log (GCL_ERR, "Unhandled error code %d", en); |
---|
1052 | g_assert_not_reached(); |
---|
1053 | break; |
---|
1054 | } |
---|
1055 | |
---|
1056 | CORBA_exception_set(ev, CORBA_USER_EXCEPTION, |
---|
1057 | ex_ConfigException, ce); |
---|
1058 | |
---|
1059 | gconf_log(GCL_ERR, _("Returning exception: %s"), (*error)->message); |
---|
1060 | |
---|
1061 | g_error_free(*error); |
---|
1062 | *error = NULL; |
---|
1063 | |
---|
1064 | return TRUE; |
---|
1065 | } |
---|
1066 | } |
---|
1067 | |
---|
1068 | gboolean |
---|
1069 | gconfd_check_in_shutdown (CORBA_Environment *ev) |
---|
1070 | { |
---|
1071 | if (in_shutdown) |
---|
1072 | { |
---|
1073 | ConfigException* ce; |
---|
1074 | |
---|
1075 | ce = ConfigException__alloc(); |
---|
1076 | ce->message = CORBA_string_dup("config server is currently shutting down"); |
---|
1077 | ce->err_no = ConfigInShutdown; |
---|
1078 | |
---|
1079 | CORBA_exception_set(ev, CORBA_USER_EXCEPTION, |
---|
1080 | ex_ConfigException, ce); |
---|
1081 | |
---|
1082 | return TRUE; |
---|
1083 | } |
---|
1084 | else |
---|
1085 | return FALSE; |
---|
1086 | } |
---|
1087 | |
---|
1088 | /* |
---|
1089 | * Logging |
---|
1090 | */ |
---|
1091 | |
---|
1092 | /* |
---|
1093 | The log file records the current listeners we have registered, |
---|
1094 | so we can restore them if we exit and restart. |
---|
1095 | |
---|
1096 | Basically: |
---|
1097 | |
---|
1098 | 1) On startup, we parse any logfile and try to restore the |
---|
1099 | listeners contained therein. As we restore each listener (give |
---|
1100 | clients a new listener ID) we append a removal of the previous |
---|
1101 | daemon's listener and the addition of our own listener to the |
---|
1102 | logfile; this means that if we crash and have to restore a |
---|
1103 | client's listener a second time, we'll have the client's current |
---|
1104 | listener ID. If all goes well we then atomically rewrite the |
---|
1105 | parsed logfile with the resulting current state, to keep the logfile |
---|
1106 | compact. |
---|
1107 | |
---|
1108 | 2) While running, we keep a FILE* open and whenever we add/remove |
---|
1109 | a listener we write a line to the logfile recording it, |
---|
1110 | to keep the logfile always up-to-date. |
---|
1111 | |
---|
1112 | 3) On normal exit, and also periodically (every hour or so, say) we |
---|
1113 | atomically write over the running log with our complete current |
---|
1114 | state, to keep the running log from growing without bound. |
---|
1115 | */ |
---|
1116 | |
---|
1117 | static void |
---|
1118 | get_log_names (gchar **logdir, gchar **logfile) |
---|
1119 | { |
---|
1120 | *logdir = gconf_concat_dir_and_key (g_get_home_dir (), ".gconfd"); |
---|
1121 | *logfile = gconf_concat_dir_and_key (*logdir, "saved_state"); |
---|
1122 | } |
---|
1123 | |
---|
1124 | static void close_append_handle (void); |
---|
1125 | |
---|
1126 | static FILE* append_handle = NULL; |
---|
1127 | static guint append_handle_timeout = 0; |
---|
1128 | |
---|
1129 | static gboolean |
---|
1130 | close_append_handle_timeout(gpointer data) |
---|
1131 | { |
---|
1132 | close_append_handle (); |
---|
1133 | |
---|
1134 | /* uninstall the timeout */ |
---|
1135 | append_handle_timeout = 0; |
---|
1136 | return FALSE; |
---|
1137 | } |
---|
1138 | |
---|
1139 | static gboolean |
---|
1140 | open_append_handle (GError **err) |
---|
1141 | { |
---|
1142 | if (append_handle == NULL) |
---|
1143 | { |
---|
1144 | gchar *logdir; |
---|
1145 | gchar *logfile; |
---|
1146 | |
---|
1147 | get_log_names (&logdir, &logfile); |
---|
1148 | |
---|
1149 | mkdir (logdir, 0700); /* ignore failure, we'll catch failures |
---|
1150 | * that matter on open() |
---|
1151 | */ |
---|
1152 | |
---|
1153 | append_handle = fopen (logfile, "a"); |
---|
1154 | |
---|
1155 | if (append_handle == NULL) |
---|
1156 | { |
---|
1157 | gconf_set_error (err, |
---|
1158 | GCONF_ERROR_FAILED, |
---|
1159 | _("Failed to open gconfd logfile; won't be able to restore listeners after gconfd shutdown (%s)"), |
---|
1160 | strerror (errno)); |
---|
1161 | |
---|
1162 | g_free (logdir); |
---|
1163 | g_free (logfile); |
---|
1164 | |
---|
1165 | return FALSE; |
---|
1166 | } |
---|
1167 | |
---|
1168 | g_free (logdir); |
---|
1169 | g_free (logfile); |
---|
1170 | |
---|
1171 | |
---|
1172 | { |
---|
1173 | const gulong timeout_len = 1000*60*0.5; /* 1 sec * 60 s/min * 0.5 min */ |
---|
1174 | |
---|
1175 | if (append_handle_timeout != 0) |
---|
1176 | g_source_remove (append_handle_timeout); |
---|
1177 | |
---|
1178 | append_handle_timeout = g_timeout_add (timeout_len, |
---|
1179 | close_append_handle_timeout, |
---|
1180 | NULL); |
---|
1181 | } |
---|
1182 | } |
---|
1183 | |
---|
1184 | return TRUE; |
---|
1185 | } |
---|
1186 | |
---|
1187 | static void |
---|
1188 | close_append_handle (void) |
---|
1189 | { |
---|
1190 | if (append_handle) |
---|
1191 | { |
---|
1192 | if (fclose (append_handle) < 0) |
---|
1193 | gconf_log (GCL_WARNING, |
---|
1194 | _("Failed to close gconfd logfile; data may not have been properly saved (%s)"), |
---|
1195 | strerror (errno)); |
---|
1196 | |
---|
1197 | append_handle = NULL; |
---|
1198 | |
---|
1199 | if (append_handle_timeout != 0) |
---|
1200 | { |
---|
1201 | g_source_remove (append_handle_timeout); |
---|
1202 | append_handle_timeout = 0; |
---|
1203 | } |
---|
1204 | } |
---|
1205 | } |
---|
1206 | |
---|
1207 | /* Atomically save our current state, if possible; otherwise |
---|
1208 | * leave the running log in place. |
---|
1209 | */ |
---|
1210 | static void |
---|
1211 | logfile_save (void) |
---|
1212 | { |
---|
1213 | GList *tmp_list; |
---|
1214 | gchar *logdir = NULL; |
---|
1215 | gchar *logfile = NULL; |
---|
1216 | gchar *tmpfile = NULL; |
---|
1217 | gchar *tmpfile2 = NULL; |
---|
1218 | GString *saveme = NULL; |
---|
1219 | gint fd = -1; |
---|
1220 | |
---|
1221 | /* Close the running log */ |
---|
1222 | close_append_handle (); |
---|
1223 | |
---|
1224 | get_log_names (&logdir, &logfile); |
---|
1225 | |
---|
1226 | mkdir (logdir, 0700); /* ignore failure, we'll catch failures |
---|
1227 | * that matter on open() |
---|
1228 | */ |
---|
1229 | |
---|
1230 | saveme = g_string_new (""); |
---|
1231 | |
---|
1232 | /* Clients */ |
---|
1233 | log_clients_to_string (saveme); |
---|
1234 | |
---|
1235 | /* Default database */ |
---|
1236 | gconf_database_log_listeners_to_string (default_db, |
---|
1237 | TRUE, |
---|
1238 | saveme); |
---|
1239 | |
---|
1240 | /* Other databases */ |
---|
1241 | |
---|
1242 | tmp_list = db_list; |
---|
1243 | |
---|
1244 | while (tmp_list) |
---|
1245 | { |
---|
1246 | GConfDatabase *db = tmp_list->data; |
---|
1247 | |
---|
1248 | gconf_database_log_listeners_to_string (db, |
---|
1249 | FALSE, |
---|
1250 | saveme); |
---|
1251 | |
---|
1252 | tmp_list = g_list_next (tmp_list); |
---|
1253 | } |
---|
1254 | |
---|
1255 | /* Now try saving the string to a temporary file */ |
---|
1256 | tmpfile = g_strconcat (logfile, ".tmp", NULL); |
---|
1257 | |
---|
1258 | fd = open (tmpfile, O_WRONLY | O_CREAT | O_TRUNC, 0700); |
---|
1259 | |
---|
1260 | if (fd < 0) |
---|
1261 | { |
---|
1262 | gconf_log (GCL_WARNING, |
---|
1263 | _("Could not open saved state file '%s' for writing: %s"), |
---|
1264 | tmpfile, strerror (errno)); |
---|
1265 | |
---|
1266 | goto out; |
---|
1267 | } |
---|
1268 | |
---|
1269 | again: |
---|
1270 | |
---|
1271 | if (write (fd, saveme->str, saveme->len) < 0) |
---|
1272 | { |
---|
1273 | if (errno == EINTR) |
---|
1274 | goto again; |
---|
1275 | |
---|
1276 | gconf_log (GCL_WARNING, |
---|
1277 | _("Could not write saved state file '%s' fd: %d: %s"), |
---|
1278 | tmpfile, fd, strerror (errno)); |
---|
1279 | |
---|
1280 | goto out; |
---|
1281 | } |
---|
1282 | |
---|
1283 | if (close (fd) < 0) |
---|
1284 | { |
---|
1285 | gconf_log (GCL_WARNING, |
---|
1286 | _("Failed to close new saved state file '%s': %s"), |
---|
1287 | tmpfile, strerror (errno)); |
---|
1288 | goto out; |
---|
1289 | } |
---|
1290 | |
---|
1291 | fd = -1; |
---|
1292 | |
---|
1293 | /* Move the main saved state file aside, if it exists */ |
---|
1294 | if (gconf_file_exists (logfile)) |
---|
1295 | { |
---|
1296 | tmpfile2 = g_strconcat (logfile, ".orig", NULL); |
---|
1297 | if (rename (logfile, tmpfile2) < 0) |
---|
1298 | { |
---|
1299 | gconf_log (GCL_WARNING, |
---|
1300 | _("Could not move aside old saved state file '%s': %s"), |
---|
1301 | logfile, strerror (errno)); |
---|
1302 | goto out; |
---|
1303 | } |
---|
1304 | } |
---|
1305 | |
---|
1306 | /* Move the new saved state file into place */ |
---|
1307 | if (rename (tmpfile, logfile) < 0) |
---|
1308 | { |
---|
1309 | gconf_log (GCL_WARNING, |
---|
1310 | _("Failed to move new save state file into place: %s"), |
---|
1311 | strerror (errno)); |
---|
1312 | |
---|
1313 | /* Try to restore old file */ |
---|
1314 | if (tmpfile2) |
---|
1315 | { |
---|
1316 | if (rename (tmpfile2, logfile) < 0) |
---|
1317 | { |
---|
1318 | gconf_log (GCL_WARNING, |
---|
1319 | _("Failed to restore original saved state file that had been moved to '%s': %s"), |
---|
1320 | tmpfile2, strerror (errno)); |
---|
1321 | |
---|
1322 | } |
---|
1323 | } |
---|
1324 | |
---|
1325 | goto out; |
---|
1326 | } |
---|
1327 | |
---|
1328 | /* Get rid of original saved state file if everything succeeded */ |
---|
1329 | if (tmpfile2) |
---|
1330 | unlink (tmpfile2); |
---|
1331 | |
---|
1332 | out: |
---|
1333 | if (saveme) |
---|
1334 | g_string_free (saveme, TRUE); |
---|
1335 | g_free (logdir); |
---|
1336 | g_free (logfile); |
---|
1337 | g_free (tmpfile); |
---|
1338 | g_free (tmpfile2); |
---|
1339 | |
---|
1340 | if (fd >= 0) |
---|
1341 | close (fd); |
---|
1342 | } |
---|
1343 | |
---|
1344 | typedef struct _ListenerLogEntry ListenerLogEntry; |
---|
1345 | |
---|
1346 | struct _ListenerLogEntry |
---|
1347 | { |
---|
1348 | guint connection_id; |
---|
1349 | gchar *ior; |
---|
1350 | gchar *address; |
---|
1351 | gchar *location; |
---|
1352 | }; |
---|
1353 | |
---|
1354 | static guint |
---|
1355 | listener_logentry_hash (gconstpointer v) |
---|
1356 | { |
---|
1357 | const ListenerLogEntry *lle = v; |
---|
1358 | |
---|
1359 | return |
---|
1360 | (lle->connection_id & 0xff000000) | |
---|
1361 | (g_str_hash (lle->ior) & 0x00ff0000) | |
---|
1362 | (g_str_hash (lle->address) & 0x0000ff00) | |
---|
1363 | (g_str_hash (lle->location) & 0x000000ff); |
---|
1364 | } |
---|
1365 | |
---|
1366 | static gboolean |
---|
1367 | listener_logentry_equal (gconstpointer ap, gconstpointer bp) |
---|
1368 | { |
---|
1369 | const ListenerLogEntry *a = ap; |
---|
1370 | const ListenerLogEntry *b = bp; |
---|
1371 | |
---|
1372 | return |
---|
1373 | a->connection_id == b->connection_id && |
---|
1374 | strcmp (a->location, b->location) == 0 && |
---|
1375 | strcmp (a->ior, b->ior) == 0 && |
---|
1376 | strcmp (a->address, b->address) == 0; |
---|
1377 | } |
---|
1378 | |
---|
1379 | /* Return value indicates whether we "handled" this line of text */ |
---|
1380 | static gboolean |
---|
1381 | parse_listener_entry (GHashTable *entries, |
---|
1382 | gchar *text) |
---|
1383 | { |
---|
1384 | gboolean add; |
---|
1385 | gchar *p; |
---|
1386 | gchar *ior; |
---|
1387 | gchar *address; |
---|
1388 | gchar *location; |
---|
1389 | gchar *end; |
---|
1390 | guint connection_id; |
---|
1391 | GError *err; |
---|
1392 | ListenerLogEntry *lle; |
---|
1393 | ListenerLogEntry *old; |
---|
1394 | |
---|
1395 | if (strncmp (text, "ADD", 3) == 0) |
---|
1396 | { |
---|
1397 | add = TRUE; |
---|
1398 | p = text + 3; |
---|
1399 | } |
---|
1400 | else if (strncmp (text, "REMOVE", 6) == 0) |
---|
1401 | { |
---|
1402 | add = FALSE; |
---|
1403 | p = text + 6; |
---|
1404 | } |
---|
1405 | else |
---|
1406 | { |
---|
1407 | return FALSE; |
---|
1408 | } |
---|
1409 | |
---|
1410 | while (*p && isspace (*p)) |
---|
1411 | ++p; |
---|
1412 | |
---|
1413 | errno = 0; |
---|
1414 | end = NULL; |
---|
1415 | connection_id = strtoul (p, &end, 10); |
---|
1416 | if (end == p || errno != 0) |
---|
1417 | { |
---|
1418 | gconf_log (GCL_DEBUG, |
---|
1419 | "Failed to parse connection ID in saved state file"); |
---|
1420 | |
---|
1421 | return TRUE; |
---|
1422 | } |
---|
1423 | |
---|
1424 | if (connection_id == 0) |
---|
1425 | { |
---|
1426 | gconf_log (GCL_DEBUG, |
---|
1427 | "Connection ID 0 in saved state file is not valid"); |
---|
1428 | return TRUE; |
---|
1429 | } |
---|
1430 | |
---|
1431 | p = end; |
---|
1432 | |
---|
1433 | while (*p && isspace (*p)) |
---|
1434 | ++p; |
---|
1435 | |
---|
1436 | err = NULL; |
---|
1437 | end = NULL; |
---|
1438 | gconf_unquote_string_inplace (p, &end, &err); |
---|
1439 | if (err != NULL) |
---|
1440 | { |
---|
1441 | gconf_log (GCL_DEBUG, |
---|
1442 | "Failed to unquote config source address from saved state file: %s", |
---|
1443 | err->message); |
---|
1444 | |
---|
1445 | g_error_free (err); |
---|
1446 | |
---|
1447 | return TRUE; |
---|
1448 | } |
---|
1449 | |
---|
1450 | address = p; |
---|
1451 | p = end; |
---|
1452 | |
---|
1453 | while (*p && isspace (*p)) |
---|
1454 | ++p; |
---|
1455 | |
---|
1456 | err = NULL; |
---|
1457 | end = NULL; |
---|
1458 | gconf_unquote_string_inplace (p, &end, &err); |
---|
1459 | if (err != NULL) |
---|
1460 | { |
---|
1461 | gconf_log (GCL_DEBUG, |
---|
1462 | "Failed to unquote listener location from saved state file: %s", |
---|
1463 | err->message); |
---|
1464 | |
---|
1465 | g_error_free (err); |
---|
1466 | |
---|
1467 | return TRUE; |
---|
1468 | } |
---|
1469 | |
---|
1470 | location = p; |
---|
1471 | p = end; |
---|
1472 | |
---|
1473 | while (*p && isspace (*p)) |
---|
1474 | ++p; |
---|
1475 | |
---|
1476 | err = NULL; |
---|
1477 | end = NULL; |
---|
1478 | gconf_unquote_string_inplace (p, &end, &err); |
---|
1479 | if (err != NULL) |
---|
1480 | { |
---|
1481 | gconf_log (GCL_DEBUG, |
---|
1482 | "Failed to unquote IOR from saved state file: %s", |
---|
1483 | err->message); |
---|
1484 | |
---|
1485 | g_error_free (err); |
---|
1486 | |
---|
1487 | return TRUE; |
---|
1488 | } |
---|
1489 | |
---|
1490 | ior = p; |
---|
1491 | p = end; |
---|
1492 | |
---|
1493 | lle = g_new (ListenerLogEntry, 1); |
---|
1494 | lle->connection_id = connection_id; |
---|
1495 | lle->address = address; |
---|
1496 | lle->ior = ior; |
---|
1497 | lle->location = location; |
---|
1498 | |
---|
1499 | if (*(lle->address) == '\0' || |
---|
1500 | *(lle->ior) == '\0' || |
---|
1501 | *(lle->location) == '\0') |
---|
1502 | { |
---|
1503 | gconf_log (GCL_DEBUG, |
---|
1504 | "Saved state file listener entry didn't contain all the fields; ignoring."); |
---|
1505 | |
---|
1506 | g_free (lle); |
---|
1507 | |
---|
1508 | return TRUE; |
---|
1509 | } |
---|
1510 | |
---|
1511 | old = g_hash_table_lookup (entries, lle); |
---|
1512 | |
---|
1513 | if (old) |
---|
1514 | { |
---|
1515 | if (add) |
---|
1516 | { |
---|
1517 | gconf_log (GCL_DEBUG, |
---|
1518 | "Saved state file records the same listener added twice; ignoring the second instance"); |
---|
1519 | goto quit; |
---|
1520 | } |
---|
1521 | else |
---|
1522 | { |
---|
1523 | /* This entry was added, then removed. */ |
---|
1524 | g_hash_table_remove (entries, lle); |
---|
1525 | goto quit; |
---|
1526 | } |
---|
1527 | } |
---|
1528 | else |
---|
1529 | { |
---|
1530 | if (add) |
---|
1531 | { |
---|
1532 | g_hash_table_insert (entries, lle, lle); |
---|
1533 | |
---|
1534 | return TRUE; |
---|
1535 | } |
---|
1536 | else |
---|
1537 | { |
---|
1538 | gconf_log (GCL_DEBUG, |
---|
1539 | "Saved state file had a removal of a listener that wasn't added; ignoring the removal."); |
---|
1540 | goto quit; |
---|
1541 | } |
---|
1542 | } |
---|
1543 | |
---|
1544 | quit: |
---|
1545 | g_free (lle); |
---|
1546 | |
---|
1547 | return TRUE; |
---|
1548 | } |
---|
1549 | |
---|
1550 | /* Return value indicates whether we "handled" this line of text */ |
---|
1551 | static gboolean |
---|
1552 | parse_client_entry (GHashTable *clients, |
---|
1553 | gchar *text) |
---|
1554 | { |
---|
1555 | gboolean add; |
---|
1556 | gchar *ior; |
---|
1557 | GError *err; |
---|
1558 | gchar *old; |
---|
1559 | gchar *p; |
---|
1560 | gchar *end; |
---|
1561 | |
---|
1562 | if (strncmp (text, "CLIENTADD", 9) == 0) |
---|
1563 | { |
---|
1564 | add = TRUE; |
---|
1565 | p = text + 9; |
---|
1566 | } |
---|
1567 | else if (strncmp (text, "CLIENTREMOVE", 12) == 0) |
---|
1568 | { |
---|
1569 | add = FALSE; |
---|
1570 | p = text + 12; |
---|
1571 | } |
---|
1572 | else |
---|
1573 | { |
---|
1574 | return FALSE; |
---|
1575 | } |
---|
1576 | |
---|
1577 | while (*p && isspace (*p)) |
---|
1578 | ++p; |
---|
1579 | |
---|
1580 | err = NULL; |
---|
1581 | end = NULL; |
---|
1582 | gconf_unquote_string_inplace (p, &end, &err); |
---|
1583 | if (err != NULL) |
---|
1584 | { |
---|
1585 | gconf_log (GCL_DEBUG, |
---|
1586 | "Failed to unquote IOR from saved state file: %s", |
---|
1587 | err->message); |
---|
1588 | |
---|
1589 | g_error_free (err); |
---|
1590 | |
---|
1591 | return TRUE; |
---|
1592 | } |
---|
1593 | |
---|
1594 | ior = p; |
---|
1595 | p = end; |
---|
1596 | |
---|
1597 | old = g_hash_table_lookup (clients, ior); |
---|
1598 | |
---|
1599 | if (old) |
---|
1600 | { |
---|
1601 | if (add) |
---|
1602 | { |
---|
1603 | gconf_log (GCL_DEBUG, |
---|
1604 | "Saved state file records the same client added twice; ignoring the second instance"); |
---|
1605 | goto quit; |
---|
1606 | } |
---|
1607 | else |
---|
1608 | { |
---|
1609 | /* This entry was added, then removed. */ |
---|
1610 | g_hash_table_remove (clients, ior); |
---|
1611 | goto quit; |
---|
1612 | } |
---|
1613 | } |
---|
1614 | else |
---|
1615 | { |
---|
1616 | if (add) |
---|
1617 | { |
---|
1618 | g_hash_table_insert (clients, ior, ior); |
---|
1619 | |
---|
1620 | return TRUE; |
---|
1621 | } |
---|
1622 | else |
---|
1623 | { |
---|
1624 | gconf_log (GCL_DEBUG, |
---|
1625 | "Saved state file had a removal of a client that wasn't added; ignoring the removal."); |
---|
1626 | goto quit; |
---|
1627 | } |
---|
1628 | } |
---|
1629 | |
---|
1630 | quit: |
---|
1631 | |
---|
1632 | return TRUE; |
---|
1633 | } |
---|
1634 | |
---|
1635 | static void |
---|
1636 | restore_client (const gchar *ior) |
---|
1637 | { |
---|
1638 | ConfigListener cl; |
---|
1639 | CORBA_Environment ev; |
---|
1640 | |
---|
1641 | CORBA_exception_init (&ev); |
---|
1642 | |
---|
1643 | cl = CORBA_ORB_string_to_object (gconf_orb_get (), |
---|
1644 | (gchar*)ior, |
---|
1645 | &ev); |
---|
1646 | |
---|
1647 | CORBA_exception_free (&ev); |
---|
1648 | |
---|
1649 | if (CORBA_Object_is_nil (cl, &ev)) |
---|
1650 | { |
---|
1651 | CORBA_exception_free (&ev); |
---|
1652 | |
---|
1653 | gconf_log (GCL_DEBUG, |
---|
1654 | "Client in saved state file no longer exists, not restoring it as a client"); |
---|
1655 | |
---|
1656 | return; |
---|
1657 | } |
---|
1658 | |
---|
1659 | ConfigListener_drop_all_caches (cl, &ev); |
---|
1660 | |
---|
1661 | if (ev._major != CORBA_NO_EXCEPTION) |
---|
1662 | { |
---|
1663 | gconf_log (GCL_DEBUG, "Failed to update client in saved state file, probably the client no longer exists"); |
---|
1664 | |
---|
1665 | goto finished; |
---|
1666 | } |
---|
1667 | |
---|
1668 | /* Add the client, since it still exists. Note that the client still |
---|
1669 | * has the wrong server object reference, so next time it tries to |
---|
1670 | * contact the server it will re-add itself; we just live with that, |
---|
1671 | * it's not a problem. |
---|
1672 | */ |
---|
1673 | add_client (cl); |
---|
1674 | |
---|
1675 | finished: |
---|
1676 | CORBA_Object_release (cl, &ev); |
---|
1677 | |
---|
1678 | CORBA_exception_free (&ev); |
---|
1679 | } |
---|
1680 | |
---|
1681 | static void |
---|
1682 | restore_listener (GConfDatabase* db, |
---|
1683 | ListenerLogEntry *lle) |
---|
1684 | { |
---|
1685 | ConfigListener cl; |
---|
1686 | CORBA_Environment ev; |
---|
1687 | guint new_cnxn; |
---|
1688 | GError *err; |
---|
1689 | |
---|
1690 | CORBA_exception_init (&ev); |
---|
1691 | |
---|
1692 | cl = CORBA_ORB_string_to_object (gconf_orb_get (), |
---|
1693 | lle->ior, |
---|
1694 | &ev); |
---|
1695 | |
---|
1696 | CORBA_exception_free (&ev); |
---|
1697 | |
---|
1698 | if (CORBA_Object_is_nil (cl, &ev)) |
---|
1699 | { |
---|
1700 | CORBA_exception_free (&ev); |
---|
1701 | |
---|
1702 | gconf_log (GCL_DEBUG, |
---|
1703 | "Client in saved state file no longer exists, not updating its listener connections"); |
---|
1704 | |
---|
1705 | return; |
---|
1706 | } |
---|
1707 | |
---|
1708 | /* "Cancel" the addition of the listener in the saved state file, |
---|
1709 | * so that if we reload the saved state file a second time |
---|
1710 | * for some reason, we don't try to add this listener that time. |
---|
1711 | */ |
---|
1712 | |
---|
1713 | err = NULL; |
---|
1714 | if (!gconfd_logfile_change_listener (db, |
---|
1715 | FALSE, /* remove */ |
---|
1716 | lle->connection_id, |
---|
1717 | cl, |
---|
1718 | lle->location, |
---|
1719 | &err)) |
---|
1720 | { |
---|
1721 | gconf_log (GCL_DEBUG, |
---|
1722 | "Failed to cancel previous daemon's listener in saved state file: %s", |
---|
1723 | err->message); |
---|
1724 | g_error_free (err); |
---|
1725 | } |
---|
1726 | |
---|
1727 | new_cnxn = gconf_database_readd_listener (db, cl, lle->location); |
---|
1728 | |
---|
1729 | gconf_log (GCL_DEBUG, "Attempting to update listener from saved state file, old connection %u, new connectin %u", (guint) lle->connection_id, (guint) new_cnxn); |
---|
1730 | |
---|
1731 | ConfigListener_update_listener (cl, |
---|
1732 | db->objref, |
---|
1733 | lle->address, |
---|
1734 | lle->connection_id, |
---|
1735 | lle->location, |
---|
1736 | new_cnxn, |
---|
1737 | &ev); |
---|
1738 | |
---|
1739 | if (ev._major != CORBA_NO_EXCEPTION) |
---|
1740 | { |
---|
1741 | gconf_log (GCL_DEBUG, "Failed to update listener in saved state file, probably the client no longer exists"); |
---|
1742 | |
---|
1743 | /* listener will get removed next time we try to notify - |
---|
1744 | * we already appended a cancel of the listener to the |
---|
1745 | * saved state file. |
---|
1746 | */ |
---|
1747 | goto finished; |
---|
1748 | } |
---|
1749 | |
---|
1750 | /* Successfully notified client of new connection ID, so put that |
---|
1751 | * connection ID in the saved state file. |
---|
1752 | */ |
---|
1753 | err = NULL; |
---|
1754 | if (!gconfd_logfile_change_listener (db, |
---|
1755 | TRUE, /* add */ |
---|
1756 | new_cnxn, |
---|
1757 | cl, |
---|
1758 | lle->location, |
---|
1759 | &err)) |
---|
1760 | { |
---|
1761 | gconf_log (GCL_DEBUG, |
---|
1762 | "Failed to re-add this daemon's listener ID in saved state file: %s", |
---|
1763 | err->message); |
---|
1764 | g_error_free (err); |
---|
1765 | } |
---|
1766 | |
---|
1767 | /* We updated the listener, and logged that to the saved state |
---|
1768 | * file. Yay! |
---|
1769 | */ |
---|
1770 | |
---|
1771 | finished: |
---|
1772 | |
---|
1773 | CORBA_Object_release (cl, &ev); |
---|
1774 | |
---|
1775 | CORBA_exception_free (&ev); |
---|
1776 | } |
---|
1777 | |
---|
1778 | static void |
---|
1779 | listener_logentry_restore_and_destroy_foreach (gpointer key, |
---|
1780 | gpointer value, |
---|
1781 | gpointer data) |
---|
1782 | { |
---|
1783 | ListenerLogEntry *lle = key; |
---|
1784 | GConfDatabase *db; |
---|
1785 | |
---|
1786 | if (strcmp (lle->address, "def") == 0) |
---|
1787 | db = default_db; |
---|
1788 | else |
---|
1789 | db = obtain_database (lle->address, NULL); |
---|
1790 | |
---|
1791 | if (db == NULL) |
---|
1792 | { |
---|
1793 | gconf_log (GCL_WARNING, |
---|
1794 | _("Unable to restore a listener on address '%s', couldn't resolve the database"), |
---|
1795 | lle->address); |
---|
1796 | return; |
---|
1797 | } |
---|
1798 | |
---|
1799 | restore_listener (db, lle); |
---|
1800 | |
---|
1801 | /* We don't need it anymore */ |
---|
1802 | g_free (lle); |
---|
1803 | } |
---|
1804 | |
---|
1805 | static void |
---|
1806 | restore_client_foreach (gpointer key, |
---|
1807 | gpointer value, |
---|
1808 | gpointer data) |
---|
1809 | { |
---|
1810 | restore_client (key); |
---|
1811 | } |
---|
1812 | |
---|
1813 | |
---|
1814 | #ifndef HAVE_FLOCKFILE |
---|
1815 | # define flockfile(f) (void)1 |
---|
1816 | # define funlockfile(f) (void)1 |
---|
1817 | # define getc_unlocked(f) getc(f) |
---|
1818 | #endif /* !HAVE_FLOCKFILE */ |
---|
1819 | |
---|
1820 | static gchar* |
---|
1821 | read_line (FILE *f) |
---|
1822 | { |
---|
1823 | int c; |
---|
1824 | GString *str; |
---|
1825 | |
---|
1826 | str = g_string_new (""); |
---|
1827 | |
---|
1828 | flockfile (f); |
---|
1829 | |
---|
1830 | while (TRUE) |
---|
1831 | { |
---|
1832 | c = getc_unlocked (f); |
---|
1833 | |
---|
1834 | switch (c) |
---|
1835 | { |
---|
1836 | case EOF: |
---|
1837 | if (ferror (f)) |
---|
1838 | { |
---|
1839 | gconf_log (GCL_ERR, |
---|
1840 | _("Error reading saved state file: %s"), |
---|
1841 | g_strerror (errno)); |
---|
1842 | } |
---|
1843 | |
---|
1844 | /* FALL THRU */ |
---|
1845 | case '\n': |
---|
1846 | goto done; |
---|
1847 | break; |
---|
1848 | |
---|
1849 | default: |
---|
1850 | g_string_append_c (str, c); |
---|
1851 | break; |
---|
1852 | } |
---|
1853 | } |
---|
1854 | |
---|
1855 | done: |
---|
1856 | funlockfile (f); |
---|
1857 | |
---|
1858 | if (str->len == 0) |
---|
1859 | { |
---|
1860 | g_string_free (str, TRUE); |
---|
1861 | return NULL; |
---|
1862 | } |
---|
1863 | else |
---|
1864 | { |
---|
1865 | gchar *ret; |
---|
1866 | |
---|
1867 | ret = str->str; |
---|
1868 | g_string_free (str, FALSE); |
---|
1869 | return ret; |
---|
1870 | } |
---|
1871 | } |
---|
1872 | |
---|
1873 | static void |
---|
1874 | logfile_read (void) |
---|
1875 | { |
---|
1876 | gchar *logfile; |
---|
1877 | gchar *logdir; |
---|
1878 | GHashTable *entries; |
---|
1879 | GHashTable *clients; |
---|
1880 | FILE *f; |
---|
1881 | gchar *line; |
---|
1882 | GSList *lines = NULL; |
---|
1883 | |
---|
1884 | /* Just for good form */ |
---|
1885 | close_append_handle (); |
---|
1886 | |
---|
1887 | get_log_names (&logdir, &logfile); |
---|
1888 | |
---|
1889 | f = fopen (logfile, "r"); |
---|
1890 | |
---|
1891 | if (f == NULL) |
---|
1892 | { |
---|
1893 | gconf_log (GCL_ERR, _("Unable to open saved state file '%s': %s"), |
---|
1894 | logfile, g_strerror (errno)); |
---|
1895 | |
---|
1896 | goto finished; |
---|
1897 | } |
---|
1898 | |
---|
1899 | entries = g_hash_table_new (listener_logentry_hash, listener_logentry_equal); |
---|
1900 | clients = g_hash_table_new (g_str_hash, g_str_equal); |
---|
1901 | |
---|
1902 | line = read_line (f); |
---|
1903 | while (line) |
---|
1904 | { |
---|
1905 | if (!parse_listener_entry (entries, line)) |
---|
1906 | { |
---|
1907 | if (!parse_client_entry (clients, line)) |
---|
1908 | { |
---|
1909 | gconf_log (GCL_DEBUG, |
---|
1910 | "Didn't understand line in saved state file: '%s'", |
---|
1911 | line); |
---|
1912 | g_free (line); |
---|
1913 | line = NULL; |
---|
1914 | } |
---|
1915 | } |
---|
1916 | |
---|
1917 | if (line) |
---|
1918 | lines = g_slist_prepend (lines, line); |
---|
1919 | |
---|
1920 | line = read_line (f); |
---|
1921 | } |
---|
1922 | |
---|
1923 | /* Restore clients first */ |
---|
1924 | g_hash_table_foreach (clients, |
---|
1925 | restore_client_foreach, |
---|
1926 | NULL); |
---|
1927 | |
---|
1928 | /* Entries that still remain in the listener hash table were added |
---|
1929 | * but not removed, so add them in this daemon instantiation and |
---|
1930 | * update their listeners with the new connection ID etc. |
---|
1931 | */ |
---|
1932 | g_hash_table_foreach (entries, |
---|
1933 | listener_logentry_restore_and_destroy_foreach, |
---|
1934 | NULL); |
---|
1935 | |
---|
1936 | g_hash_table_destroy (entries); |
---|
1937 | g_hash_table_destroy (clients); |
---|
1938 | |
---|
1939 | /* Note that we need the strings to remain valid until we are totally |
---|
1940 | * finished, because we store pointers to them in the log entry |
---|
1941 | * hash. |
---|
1942 | */ |
---|
1943 | g_slist_foreach (lines, (GFunc)g_free, NULL); |
---|
1944 | g_slist_free (lines); |
---|
1945 | |
---|
1946 | finished: |
---|
1947 | |
---|
1948 | g_free (logfile); |
---|
1949 | g_free (logdir); |
---|
1950 | } |
---|
1951 | |
---|
1952 | gboolean |
---|
1953 | gconfd_logfile_change_listener (GConfDatabase *db, |
---|
1954 | gboolean add, |
---|
1955 | guint connection_id, |
---|
1956 | ConfigListener listener, |
---|
1957 | const gchar *where, |
---|
1958 | GError **err) |
---|
1959 | { |
---|
1960 | gchar *ior = NULL; |
---|
1961 | gchar *quoted_db_name; |
---|
1962 | gchar *quoted_where; |
---|
1963 | gchar *quoted_ior; |
---|
1964 | |
---|
1965 | if (!open_append_handle (err)) |
---|
1966 | return FALSE; |
---|
1967 | |
---|
1968 | ior = gconf_object_to_string (listener, err); |
---|
1969 | |
---|
1970 | if (ior == NULL) |
---|
1971 | return FALSE; |
---|
1972 | |
---|
1973 | quoted_ior = gconf_quote_string (ior); |
---|
1974 | g_free (ior); |
---|
1975 | ior = NULL; |
---|
1976 | |
---|
1977 | if (db == default_db) |
---|
1978 | quoted_db_name = gconf_quote_string ("def"); |
---|
1979 | else |
---|
1980 | { |
---|
1981 | const gchar *db_name; |
---|
1982 | |
---|
1983 | db_name = gconf_database_get_persistent_name (db); |
---|
1984 | |
---|
1985 | quoted_db_name = gconf_quote_string (db_name); |
---|
1986 | } |
---|
1987 | |
---|
1988 | quoted_where = gconf_quote_string (where); |
---|
1989 | |
---|
1990 | /* KEEP IN SYNC with gconf-database.c log to string function */ |
---|
1991 | if (fprintf (append_handle, "%s %u %s %s %s\n", |
---|
1992 | add ? "ADD" : "REMOVE", connection_id, |
---|
1993 | quoted_db_name, quoted_where, quoted_ior) < 0) |
---|
1994 | goto error; |
---|
1995 | |
---|
1996 | if (fflush (append_handle) < 0) |
---|
1997 | goto error; |
---|
1998 | |
---|
1999 | g_free (quoted_db_name); |
---|
2000 | g_free (quoted_ior); |
---|
2001 | g_free (quoted_where); |
---|
2002 | |
---|
2003 | return TRUE; |
---|
2004 | |
---|
2005 | error: |
---|
2006 | |
---|
2007 | if (add) |
---|
2008 | gconf_set_error (err, |
---|
2009 | GCONF_ERROR_FAILED, |
---|
2010 | _("Failed to log addition of listener to gconfd logfile; won't be able to re-add the listener if gconfd exits or shuts down (%s)"), |
---|
2011 | g_strerror (errno)); |
---|
2012 | else |
---|
2013 | gconf_set_error (err, |
---|
2014 | GCONF_ERROR_FAILED, |
---|
2015 | _("Failed to log removal of listener to gconfd logfile; might erroneously re-add the listener if gconfd exits or shuts down (%s)"), |
---|
2016 | g_strerror (errno)); |
---|
2017 | |
---|
2018 | g_free (quoted_db_name); |
---|
2019 | g_free (quoted_ior); |
---|
2020 | g_free (quoted_where); |
---|
2021 | |
---|
2022 | return FALSE; |
---|
2023 | } |
---|
2024 | |
---|
2025 | static void |
---|
2026 | log_client_change (const ConfigListener client, |
---|
2027 | gboolean add) |
---|
2028 | { |
---|
2029 | gchar *ior = NULL; |
---|
2030 | gchar *quoted_ior = NULL; |
---|
2031 | GError *err; |
---|
2032 | |
---|
2033 | err = NULL; |
---|
2034 | ior = gconf_object_to_string (client, &err); |
---|
2035 | |
---|
2036 | if (err != NULL) |
---|
2037 | { |
---|
2038 | gconf_log (GCL_WARNING, _("Failed to get IOR for client: %s"), |
---|
2039 | err->message); |
---|
2040 | g_error_free (err); |
---|
2041 | return; |
---|
2042 | } |
---|
2043 | |
---|
2044 | if (ior == NULL) |
---|
2045 | return; |
---|
2046 | |
---|
2047 | quoted_ior = gconf_quote_string (ior); |
---|
2048 | g_free (ior); |
---|
2049 | ior = NULL; |
---|
2050 | |
---|
2051 | if (!open_append_handle (&err)) |
---|
2052 | { |
---|
2053 | gconf_log (GCL_WARNING, _("Failed to open saved state file: %s"), |
---|
2054 | err->message); |
---|
2055 | |
---|
2056 | g_error_free (err); |
---|
2057 | |
---|
2058 | goto error; |
---|
2059 | } |
---|
2060 | |
---|
2061 | /* KEEP IN SYNC with log to string function */ |
---|
2062 | if (fprintf (append_handle, "%s %s\n", |
---|
2063 | add ? "CLIENTADD" : "CLIENTREMOVE", quoted_ior) < 0) |
---|
2064 | { |
---|
2065 | gconf_log (GCL_WARNING, |
---|
2066 | _("Failed to write client add to saved state file: %s"), |
---|
2067 | strerror (errno)); |
---|
2068 | goto error; |
---|
2069 | } |
---|
2070 | |
---|
2071 | if (fflush (append_handle) < 0) |
---|
2072 | { |
---|
2073 | gconf_log (GCL_WARNING, |
---|
2074 | _("Failed to flush client add to saved state file: %s"), |
---|
2075 | strerror (errno)); |
---|
2076 | goto error; |
---|
2077 | } |
---|
2078 | |
---|
2079 | error: |
---|
2080 | g_free (ior); |
---|
2081 | g_free (quoted_ior); |
---|
2082 | } |
---|
2083 | |
---|
2084 | static void |
---|
2085 | log_client_add (const ConfigListener client) |
---|
2086 | { |
---|
2087 | log_client_change (client, TRUE); |
---|
2088 | } |
---|
2089 | |
---|
2090 | static void |
---|
2091 | log_client_remove (const ConfigListener client) |
---|
2092 | { |
---|
2093 | log_client_change (client, FALSE); |
---|
2094 | } |
---|
2095 | |
---|
2096 | /* |
---|
2097 | * Client handling |
---|
2098 | */ |
---|
2099 | |
---|
2100 | static GHashTable *client_table = NULL; |
---|
2101 | |
---|
2102 | static void |
---|
2103 | add_client (const ConfigListener client) |
---|
2104 | { |
---|
2105 | gconfd_need_log_cleanup (); |
---|
2106 | |
---|
2107 | if (client_table == NULL) |
---|
2108 | client_table = g_hash_table_new ((GHashFunc) g_CORBA_Object_hash, |
---|
2109 | (GCompareFunc) g_CORBA_Object_equal); |
---|
2110 | |
---|
2111 | if (g_hash_table_lookup (client_table, client)) |
---|
2112 | { |
---|
2113 | /* Ignore this case; it happens normally when we added a client |
---|
2114 | * from the logfile, and the client also adds itself |
---|
2115 | * when it gets a new server objref. |
---|
2116 | */ |
---|
2117 | return; |
---|
2118 | } |
---|
2119 | else |
---|
2120 | { |
---|
2121 | CORBA_Environment ev; |
---|
2122 | ConfigListener copy; |
---|
2123 | |
---|
2124 | CORBA_exception_init (&ev); |
---|
2125 | copy = CORBA_Object_duplicate (client, &ev); |
---|
2126 | g_hash_table_insert (client_table, copy, copy); |
---|
2127 | CORBA_exception_free (&ev); |
---|
2128 | |
---|
2129 | log_client_add (client); |
---|
2130 | |
---|
2131 | gconf_log (GCL_DEBUG, "Added a new client"); |
---|
2132 | } |
---|
2133 | } |
---|
2134 | |
---|
2135 | static void |
---|
2136 | remove_client (const ConfigListener client) |
---|
2137 | { |
---|
2138 | ConfigListener old_client; |
---|
2139 | CORBA_Environment ev; |
---|
2140 | |
---|
2141 | gconfd_need_log_cleanup (); |
---|
2142 | |
---|
2143 | if (client_table == NULL) |
---|
2144 | goto notfound; |
---|
2145 | |
---|
2146 | old_client = g_hash_table_lookup (client_table, |
---|
2147 | client); |
---|
2148 | |
---|
2149 | if (old_client == NULL) |
---|
2150 | goto notfound; |
---|
2151 | |
---|
2152 | g_hash_table_remove (client_table, |
---|
2153 | old_client); |
---|
2154 | |
---|
2155 | log_client_remove (old_client); |
---|
2156 | |
---|
2157 | CORBA_exception_init (&ev); |
---|
2158 | CORBA_Object_release (old_client, &ev); |
---|
2159 | CORBA_exception_free (&ev); |
---|
2160 | |
---|
2161 | return; |
---|
2162 | |
---|
2163 | notfound: |
---|
2164 | gconf_log (GCL_WARNING, _("Some client removed itself from the GConf server when it hadn't been added.")); |
---|
2165 | } |
---|
2166 | |
---|
2167 | static void |
---|
2168 | hash_listify_func(gpointer key, gpointer value, gpointer user_data) |
---|
2169 | { |
---|
2170 | GSList** list_p = user_data; |
---|
2171 | |
---|
2172 | *list_p = g_slist_prepend(*list_p, value); |
---|
2173 | } |
---|
2174 | |
---|
2175 | static GSList* |
---|
2176 | list_clients (void) |
---|
2177 | { |
---|
2178 | GSList *clients = NULL; |
---|
2179 | |
---|
2180 | if (client_table == NULL) |
---|
2181 | return NULL; |
---|
2182 | |
---|
2183 | g_hash_table_foreach (client_table, hash_listify_func, &clients); |
---|
2184 | |
---|
2185 | return clients; |
---|
2186 | } |
---|
2187 | |
---|
2188 | static void |
---|
2189 | log_clients_foreach (gpointer key, gpointer value, gpointer data) |
---|
2190 | { |
---|
2191 | ConfigListener client; |
---|
2192 | gchar *ior = NULL; |
---|
2193 | gchar *quoted_ior = NULL; |
---|
2194 | GError *err; |
---|
2195 | |
---|
2196 | client = value; |
---|
2197 | |
---|
2198 | err = NULL; |
---|
2199 | ior = gconf_object_to_string (client, &err); |
---|
2200 | |
---|
2201 | if (err != NULL) |
---|
2202 | { |
---|
2203 | gconf_log (GCL_WARNING, _("Failed to get IOR for client: %s"), |
---|
2204 | err->message); |
---|
2205 | g_error_free (err); |
---|
2206 | return; |
---|
2207 | } |
---|
2208 | |
---|
2209 | if (ior == NULL) |
---|
2210 | return; |
---|
2211 | |
---|
2212 | quoted_ior = gconf_quote_string (ior); |
---|
2213 | g_free (ior); |
---|
2214 | ior = NULL; |
---|
2215 | |
---|
2216 | g_string_append (data, "CLIENTADD "); |
---|
2217 | g_string_append (data, quoted_ior); |
---|
2218 | g_string_append_c (data, '\n'); |
---|
2219 | g_free (quoted_ior); |
---|
2220 | } |
---|
2221 | |
---|
2222 | static void |
---|
2223 | log_clients_to_string (GString *str) |
---|
2224 | { |
---|
2225 | if (client_table == NULL) |
---|
2226 | return; |
---|
2227 | |
---|
2228 | g_hash_table_foreach (client_table, log_clients_foreach, str); |
---|
2229 | } |
---|
2230 | |
---|
2231 | static void |
---|
2232 | drop_old_clients (void) |
---|
2233 | { |
---|
2234 | GSList *clients; |
---|
2235 | GSList *tmp; |
---|
2236 | |
---|
2237 | clients = list_clients (); |
---|
2238 | |
---|
2239 | if (clients) |
---|
2240 | { |
---|
2241 | CORBA_Environment ev; |
---|
2242 | |
---|
2243 | CORBA_exception_init (&ev); |
---|
2244 | |
---|
2245 | tmp = clients; |
---|
2246 | while (tmp != NULL) |
---|
2247 | { |
---|
2248 | ConfigListener cl = tmp->data; |
---|
2249 | |
---|
2250 | ConfigListener_ping (cl, &ev); |
---|
2251 | |
---|
2252 | if (ev._major != CORBA_NO_EXCEPTION) |
---|
2253 | { |
---|
2254 | gconf_log (GCL_DEBUG, "Removing stale client"); |
---|
2255 | |
---|
2256 | remove_client (cl); |
---|
2257 | |
---|
2258 | CORBA_exception_free (&ev); |
---|
2259 | } |
---|
2260 | |
---|
2261 | tmp = g_slist_next (tmp); |
---|
2262 | } |
---|
2263 | |
---|
2264 | g_slist_free (clients); |
---|
2265 | } |
---|
2266 | } |
---|
2267 | |
---|
2268 | static guint |
---|
2269 | client_count (void) |
---|
2270 | { |
---|
2271 | if (client_table == NULL) |
---|
2272 | return 0; |
---|
2273 | else |
---|
2274 | return g_hash_table_size (client_table); |
---|
2275 | } |
---|