[134] | 1 | /* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*- |
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| 2 | * |
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| 3 | * Copyright (C) 2007 William Jon McCann <mccann@jhu.edu> |
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| 4 | * |
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| 5 | * This program is free software; you can redistribute it and/or modify |
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| 6 | * it under the terms of the GNU General Public License as published by |
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| 7 | * the Free Software Foundation; either version 2 of the License, or |
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| 8 | * (at your option) any later version. |
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| 9 | * |
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| 10 | * This program is distributed in the hope that it will be useful, |
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| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 13 | * GNU General Public License for more details. |
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| 14 | * |
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| 15 | * You should have received a copy of the GNU General Public License |
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| 16 | * along with this program; if not, write to the Free Software |
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| 17 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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| 18 | * |
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| 19 | */ |
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| 20 | |
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| 21 | #include "config.h" |
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| 22 | |
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| 23 | #include <stdlib.h> |
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| 24 | #include <stdio.h> |
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| 25 | #include <fcntl.h> |
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| 26 | #include <unistd.h> |
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| 27 | #include <string.h> |
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| 28 | #include <signal.h> |
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| 29 | #include <sys/stat.h> |
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| 30 | #include <sys/types.h> |
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| 31 | #include <errno.h> |
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| 32 | |
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| 33 | #include <glib.h> |
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| 34 | #include <glib/gi18n.h> |
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| 35 | #include <glib/gstdio.h> |
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| 36 | #include <glib-object.h> |
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| 37 | |
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| 38 | #include "gdm-settings-utils.h" |
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| 39 | |
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| 40 | struct _GdmSettingsEntry |
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| 41 | { |
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| 42 | char *key; |
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| 43 | char *signature; |
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| 44 | char *default_value; |
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| 45 | char *value; |
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| 46 | }; |
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| 47 | |
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| 48 | GdmSettingsEntry * |
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| 49 | gdm_settings_entry_new (void) |
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| 50 | { |
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| 51 | GdmSettingsEntry *entry = NULL; |
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| 52 | |
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| 53 | entry = g_new0 (GdmSettingsEntry, 1); |
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| 54 | entry->key = NULL; |
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| 55 | entry->signature = NULL; |
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| 56 | entry->value = NULL; |
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| 57 | entry->default_value = NULL; |
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| 58 | |
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| 59 | return entry; |
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| 60 | } |
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| 61 | |
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| 62 | const char * |
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| 63 | gdm_settings_entry_get_key (GdmSettingsEntry *entry) |
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| 64 | { |
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| 65 | return entry->key; |
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| 66 | } |
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| 67 | |
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| 68 | const char * |
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| 69 | gdm_settings_entry_get_signature (GdmSettingsEntry *entry) |
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| 70 | { |
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| 71 | return entry->signature; |
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| 72 | } |
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| 73 | |
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| 74 | const char * |
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| 75 | gdm_settings_entry_get_default_value (GdmSettingsEntry *entry) |
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| 76 | { |
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| 77 | return entry->default_value; |
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| 78 | } |
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| 79 | |
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| 80 | const char * |
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| 81 | gdm_settings_entry_get_value (GdmSettingsEntry *entry) |
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| 82 | { |
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| 83 | return entry->value; |
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| 84 | } |
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| 85 | |
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| 86 | void |
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| 87 | gdm_settings_entry_set_value (GdmSettingsEntry *entry, |
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| 88 | const char *value) |
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| 89 | { |
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| 90 | g_free (entry->value); |
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| 91 | entry->value = g_strdup (value); |
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| 92 | } |
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| 93 | |
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| 94 | void |
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| 95 | gdm_settings_entry_free (GdmSettingsEntry *entry) |
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| 96 | { |
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| 97 | g_free (entry->key); |
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| 98 | g_free (entry->signature); |
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| 99 | g_free (entry->default_value); |
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| 100 | g_free (entry->value); |
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| 101 | g_free (entry); |
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| 102 | } |
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| 103 | |
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| 104 | typedef struct { |
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| 105 | GSList *list; |
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| 106 | GdmSettingsEntry *entry; |
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| 107 | gboolean in_key; |
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| 108 | gboolean in_signature; |
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| 109 | gboolean in_default; |
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| 110 | } ParserInfo; |
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| 111 | |
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| 112 | static void |
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| 113 | start_element_cb (GMarkupParseContext *ctx, |
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| 114 | const char *element_name, |
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| 115 | const char **attribute_names, |
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| 116 | const char **attribute_values, |
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| 117 | gpointer user_data, |
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| 118 | GError **error) |
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| 119 | { |
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| 120 | ParserInfo *info; |
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| 121 | |
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| 122 | info = (ParserInfo *) user_data; |
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| 123 | |
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| 124 | /*g_debug ("parsing start: '%s'", element_name);*/ |
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| 125 | |
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| 126 | if (strcmp (element_name, "schema") == 0) { |
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| 127 | info->entry = gdm_settings_entry_new (); |
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| 128 | } else if (strcmp (element_name, "key") == 0) { |
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| 129 | info->in_key = TRUE; |
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| 130 | } else if (strcmp (element_name, "signature") == 0) { |
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| 131 | info->in_signature = TRUE; |
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| 132 | } else if (strcmp (element_name, "default") == 0) { |
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| 133 | info->in_default = TRUE; |
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| 134 | } |
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| 135 | } |
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| 136 | |
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| 137 | static void |
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| 138 | add_schema_entry (ParserInfo *info) |
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| 139 | { |
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| 140 | /*g_debug ("Inserting entry %s", info->entry->key);*/ |
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| 141 | |
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| 142 | info->list = g_slist_prepend (info->list, info->entry); |
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| 143 | } |
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| 144 | |
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| 145 | static void |
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| 146 | end_element_cb (GMarkupParseContext *ctx, |
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| 147 | const char *element_name, |
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| 148 | gpointer user_data, |
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| 149 | GError **error) |
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| 150 | { |
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| 151 | ParserInfo *info; |
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| 152 | |
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| 153 | info = (ParserInfo *) user_data; |
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| 154 | |
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| 155 | /*g_debug ("parsing end: '%s'", element_name);*/ |
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| 156 | |
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| 157 | if (strcmp (element_name, "schema") == 0) { |
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| 158 | add_schema_entry (info); |
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| 159 | } else if (strcmp (element_name, "key") == 0) { |
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| 160 | info->in_key = FALSE; |
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| 161 | } else if (strcmp (element_name, "signature") == 0) { |
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| 162 | info->in_signature = FALSE; |
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| 163 | } else if (strcmp (element_name, "default") == 0) { |
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| 164 | info->in_default = FALSE; |
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| 165 | } |
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| 166 | } |
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| 167 | |
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| 168 | static void |
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| 169 | text_cb (GMarkupParseContext *ctx, |
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| 170 | const char *text, |
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| 171 | gsize text_len, |
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| 172 | gpointer user_data, |
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| 173 | GError **error) |
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| 174 | { |
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| 175 | ParserInfo *info; |
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| 176 | char *t; |
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| 177 | |
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| 178 | info = (ParserInfo *) user_data; |
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| 179 | |
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| 180 | t = g_strndup (text, text_len); |
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| 181 | |
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| 182 | if (info->in_key) { |
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| 183 | info->entry->key = g_strdup (t); |
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| 184 | } else if (info->in_signature) { |
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| 185 | info->entry->signature = g_strdup (t); |
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| 186 | } else if (info->in_default) { |
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| 187 | info->entry->default_value = g_strdup (t); |
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| 188 | } |
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| 189 | |
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| 190 | g_free (t); |
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| 191 | |
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| 192 | } |
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| 193 | |
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| 194 | static void |
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| 195 | error_cb (GMarkupParseContext *ctx, |
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| 196 | GError *error, |
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| 197 | gpointer user_data) |
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| 198 | { |
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| 199 | } |
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| 200 | |
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| 201 | static GMarkupParser parser = { |
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| 202 | start_element_cb, |
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| 203 | end_element_cb, |
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| 204 | text_cb, |
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| 205 | NULL, |
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| 206 | error_cb |
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| 207 | }; |
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| 208 | |
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| 209 | gboolean |
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| 210 | gdm_settings_parse_schemas (const char *file, |
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| 211 | const char *root, |
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| 212 | GSList **schemas) |
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| 213 | { |
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| 214 | GMarkupParseContext *ctx; |
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| 215 | ParserInfo *info; |
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| 216 | char *contents; |
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| 217 | gsize len; |
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| 218 | GError *error; |
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| 219 | gboolean res; |
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| 220 | |
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| 221 | g_return_val_if_fail (file != NULL, FALSE); |
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| 222 | g_return_val_if_fail (root != NULL, FALSE); |
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| 223 | |
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| 224 | g_assert (schemas != NULL); |
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| 225 | |
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| 226 | contents = NULL; |
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| 227 | error = NULL; |
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| 228 | res = g_file_get_contents (file, &contents, &len, &error); |
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| 229 | if (! res) { |
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| 230 | g_warning ("Unable to read schemas file: %s", error->message); |
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| 231 | g_error_free (error); |
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| 232 | return FALSE; |
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| 233 | } |
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| 234 | |
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| 235 | info = g_new0 (ParserInfo, 1); |
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| 236 | ctx = g_markup_parse_context_new (&parser, 0, info, NULL); |
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| 237 | g_markup_parse_context_parse (ctx, contents, len, NULL); |
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| 238 | |
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| 239 | *schemas = info->list; |
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| 240 | |
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| 241 | g_markup_parse_context_free (ctx); |
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| 242 | g_free (info); |
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| 243 | g_free (contents); |
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| 244 | |
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| 245 | return TRUE; |
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| 246 | } |
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| 247 | |
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| 248 | char * |
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| 249 | gdm_settings_parse_double_as_value (gdouble doubleval) |
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| 250 | { |
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| 251 | char result[G_ASCII_DTOSTR_BUF_SIZE]; |
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| 252 | |
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| 253 | g_ascii_dtostr (result, sizeof (result), doubleval); |
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| 254 | |
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| 255 | return g_strdup (result); |
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| 256 | } |
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| 257 | |
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| 258 | char * |
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| 259 | gdm_settings_parse_integer_as_value (int intval) |
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| 260 | |
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| 261 | { |
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| 262 | return g_strdup_printf ("%d", intval); |
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| 263 | } |
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| 264 | |
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| 265 | char * |
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| 266 | gdm_settings_parse_boolean_as_value (gboolean boolval) |
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| 267 | { |
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| 268 | if (boolval) { |
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| 269 | return g_strdup ("true"); |
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| 270 | } else { |
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| 271 | return g_strdup ("false"); |
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| 272 | } |
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| 273 | } |
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| 274 | |
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| 275 | |
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| 276 | /* adapted from GKeyFile */ |
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| 277 | gboolean |
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| 278 | gdm_settings_parse_value_as_boolean (const char *value, |
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| 279 | gboolean *bool) |
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| 280 | { |
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| 281 | if (g_ascii_strcasecmp (value, "true") == 0 || strcmp (value, "1") == 0) { |
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| 282 | *bool = TRUE; |
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| 283 | return TRUE; |
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| 284 | } else if (g_ascii_strcasecmp (value, "false") == 0 || strcmp (value, "0") == 0) { |
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| 285 | *bool = FALSE; |
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| 286 | return TRUE; |
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| 287 | } else { |
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| 288 | return FALSE; |
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| 289 | } |
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| 290 | } |
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| 291 | |
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| 292 | gboolean |
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| 293 | gdm_settings_parse_value_as_integer (const char *value, |
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| 294 | int *intval) |
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| 295 | { |
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| 296 | char *end_of_valid_int; |
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| 297 | glong long_value; |
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| 298 | gint int_value; |
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| 299 | |
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| 300 | errno = 0; |
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| 301 | long_value = strtol (value, &end_of_valid_int, 10); |
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| 302 | |
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| 303 | if (*value == '\0' || *end_of_valid_int != '\0') { |
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| 304 | return FALSE; |
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| 305 | } |
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| 306 | |
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| 307 | int_value = long_value; |
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| 308 | if (int_value != long_value || errno == ERANGE) { |
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| 309 | return FALSE; |
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| 310 | } |
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| 311 | |
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| 312 | *intval = int_value; |
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| 313 | |
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| 314 | return TRUE; |
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| 315 | } |
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| 316 | |
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| 317 | gboolean |
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| 318 | gdm_settings_parse_value_as_double (const char *value, |
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| 319 | gdouble *doubleval) |
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| 320 | { |
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| 321 | char *end_of_valid_d; |
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| 322 | gdouble double_value = 0; |
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| 323 | |
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| 324 | double_value = g_ascii_strtod (value, &end_of_valid_d); |
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| 325 | |
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| 326 | if (*end_of_valid_d != '\0' || end_of_valid_d == value) { |
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| 327 | return FALSE; |
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| 328 | } |
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| 329 | |
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| 330 | *doubleval = double_value; |
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| 331 | return TRUE; |
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| 332 | } |
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