gio/glocalvfs.c

   1 /* GIO - GLib Input, Output and Streaming Library
   2  *
   3  * Copyright (C) 2006-2007 Red Hat, Inc.
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Lesser General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2 of the License, or (at your option) any later version.
   9  *
  10  * This library is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Lesser General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Lesser General
  16  * Public License along with this library; if not, see <http://www.gnu.org/licenses/>.
  17  *
  18  * Author: Alexander Larsson <alexl@redhat.com>
  19  */
  20
  21 #include "config.h"
  22 #include "glocalvfs.h"
  23 #include "glocalfile.h"
  24 #include "giomodule.h"
  25 #include "giomodule-priv.h"
  26 #include "gvfs.h"
  27 #include <gio/gdummyfile.h>
  28 #include <sys/types.h>
  29 #ifdef G_OS_UNIX
  30 #include <pwd.h>
  31 #endif
  32 #include <string.h>
  33
  34
  35 struct _GLocalVfs
  36 {
  37   GVfs parent;
  38 };
  39
  40 struct _GLocalVfsClass
  41 {
  42   GVfsClass parent_class;
  43
  44 };
  45
  46 #define g_local_vfs_get_type _g_local_vfs_get_type
  47 G_DEFINE_TYPE_WITH_CODE (GLocalVfs, g_local_vfs, G_TYPE_VFS,
  48                          _g_io_modules_ensure_extension_points_registered ();
  49                          g_io_extension_point_implement (G_VFS_EXTENSION_POINT_NAME,
  50                                                          g_define_type_id,
  51                                                          "local",
  52                                                          0))
  53 static void
  54 g_local_vfs_finalize (GObject *object)
  55 {
  56   /* must chain up */
  57   G_OBJECT_CLASS (g_local_vfs_parent_class)->finalize (object);
  58 }
  59
  60 static void
  61 g_local_vfs_init (GLocalVfs *vfs)
  62 {
  63 }
  64
  65 /**
  66  * g_local_vfs_new:
  67  *
  68  * Returns a new #GVfs handle for a local vfs.
  69  *
  70  * Returns: a new #GVfs handle.
  71  **/
  72 GVfs *
  73 _g_local_vfs_new (void)
  74 {
  75   return g_object_new (G_TYPE_LOCAL_VFS, NULL);
  76 }
  77
  78 static GFile *
  79 g_local_vfs_get_file_for_path (GVfs       *vfs,
  80                                const char *path)
  81 {
  82   return _g_local_file_new (path);
  83 }
  84
  85 static GFile *
  86 g_local_vfs_get_file_for_uri (GVfs       *vfs,
  87                               const char *uri)
  88 {
  89   char *path;
  90   GFile *file;
  91   char *stripped_uri, *hash;
  92
  93   if (strchr (uri, '#') != NULL)
  94     {
  95       stripped_uri = g_strdup (uri);
  96       hash = strchr (stripped_uri, '#');
  97       *hash = 0;
  98     }
  99   else
 100     stripped_uri = (char *)uri;
 101
 102   path = g_filename_from_uri (stripped_uri, NULL, NULL);
 103
 104   if (stripped_uri != uri)
 105     g_free (stripped_uri);
 106
 107   if (path != NULL)
 108     file = _g_local_file_new (path);
 109   else
 110     file = _g_dummy_file_new (uri);
 111
 112   g_free (path);
 113
 114   return file;
 115 }
 116
 117 static const gchar * const *
 118 g_local_vfs_get_supported_uri_schemes (GVfs *vfs)
 119 {
 120   static const gchar * uri_schemes[] = { "file", NULL };
 121
 122   return uri_schemes;
 123 }
 124
 125 static GFile *
 126 g_local_vfs_parse_name (GVfs       *vfs,
 127                         const char *parse_name)
 128 {
 129   GFile *file;
 130   char *filename;
 131   char *user_prefix;
 132   const char *user_start, *user_end;
 133   char *rest;
 134
 135   g_return_val_if_fail (G_IS_VFS (vfs), NULL);
 136   g_return_val_if_fail (parse_name != NULL, NULL);
 137
 138   if (g_ascii_strncasecmp ("file:", parse_name, 5) == 0)
 139     filename = g_filename_from_uri (parse_name, NULL, NULL);
 140   else
 141     {
 142       if (*parse_name == '~')
 143         {
 144           parse_name ++;
 145           user_start = parse_name;
 146
 147           while (*parse_name != 0 && *parse_name != '/')
 148             parse_name++;
 149
 150           user_end = parse_name;
 151
 152           if (user_end == user_start)
 153             user_prefix = g_strdup (g_get_home_dir ());
 154           else
 155             {
 156 #ifdef G_OS_UNIX
 157               struct passwd *passwd_file_entry;
 158               char *user_name;
 159
 160               user_name = g_strndup (user_start, user_end - user_start);
 161               passwd_file_entry = getpwnam (user_name);
 162               g_free (user_name);
 163
 164               if (passwd_file_entry != NULL &&
 165                   passwd_file_entry->pw_dir != NULL)
 166                 user_prefix = g_strdup (passwd_file_entry->pw_dir);
 167               else
 168 #endif
 169                 user_prefix = g_strdup (g_get_home_dir ());
 170             }
 171
 172           rest = NULL;
 173           if (*user_end != 0)
 174             rest = g_filename_from_utf8 (user_end, -1, NULL, NULL, NULL);
 175
 176           filename = g_build_filename (user_prefix, rest, NULL);
 177           g_free (rest);
 178           g_free (user_prefix);
 179         }
 180       else
 181         filename = g_filename_from_utf8 (parse_name, -1, NULL, NULL, NULL);
 182     }
 183
 184   if (filename == NULL)
 185     filename = g_strdup (parse_name);
 186
 187   file = _g_local_file_new (filename);
 188   g_free (filename);
 189
 190   return file;
 191 }
 192
 193 static gboolean
 194 g_local_vfs_is_active (GVfs *vfs)
 195 {
 196   return TRUE;
 197 }
 198
 199 static void
 200 g_local_vfs_class_init (GLocalVfsClass *class)
 201 {
 202   GObjectClass *object_class;
 203   GVfsClass *vfs_class;
 204
 205   object_class = (GObjectClass *) class;
 206
 207   object_class->finalize = g_local_vfs_finalize;
 208
 209   vfs_class = G_VFS_CLASS (class);
 210
 211   vfs_class->is_active = g_local_vfs_is_active;
 212   vfs_class->get_file_for_path = g_local_vfs_get_file_for_path;
 213   vfs_class->get_file_for_uri = g_local_vfs_get_file_for_uri;
 214   vfs_class->get_supported_uri_schemes = g_local_vfs_get_supported_uri_schemes;
 215   vfs_class->parse_name = g_local_vfs_parse_name;
 216 }