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, write to the
  17  * Free Software Foundation, Inc., 59 Temple Place, Suite 330,
  18  * Boston, MA 02111-1307, USA.
  19  *
  20  * Author: Alexander Larsson <alexl@redhat.com>
  21  */
  22
  23 #include "config.h"
  24 #include "glocalvfs.h"
  25 #include "glocalfile.h"
  26 #include "giomodule.h"
  27 #include "giomodule-priv.h"
  28 #include "gvfs.h"
  29 #include <gio/gdummyfile.h>
  30 #include <sys/types.h>
  31 #ifdef HAVE_PWD_H
  32 #include <pwd.h>
  33 #endif
  34 #include <string.h>
  35
  36
  37 struct _GLocalVfs
  38 {
  39   GVfs parent;
  40 };
  41
  42 struct _GLocalVfsClass
  43 {
  44   GVfsClass parent_class;
  45
  46 };
  47
  48 #define g_local_vfs_get_type _g_local_vfs_get_type
  49 G_DEFINE_TYPE_WITH_CODE (GLocalVfs, g_local_vfs, G_TYPE_VFS,
  50                          _g_io_modules_ensure_extension_points_registered ();
  51                          g_io_extension_point_implement (G_VFS_EXTENSION_POINT_NAME,
  52                                                          g_define_type_id,
  53                                                          "local",
  54                                                          0))
  55 static void
  56 g_local_vfs_finalize (GObject *object)
  57 {
  58   /* must chain up */
  59   G_OBJECT_CLASS (g_local_vfs_parent_class)->finalize (object);
  60 }
  61
  62 static void
  63 g_local_vfs_init (GLocalVfs *vfs)
  64 {
  65 }
  66
  67 /**
  68  * g_local_vfs_new:
  69  *
  70  * Returns a new #GVfs handle for a local vfs.
  71  *
  72  * Returns: a new #GVfs handle.
  73  **/
  74 GVfs *
  75 _g_local_vfs_new (void)
  76 {
  77   return g_object_new (G_TYPE_LOCAL_VFS, NULL);
  78 }
  79
  80 static GFile *
  81 g_local_vfs_get_file_for_path (GVfs       *vfs,
  82                                const char *path)
  83 {
  84   return _g_local_file_new (path);
  85 }
  86
  87 static GFile *
  88 g_local_vfs_get_file_for_uri (GVfs       *vfs,
  89                               const char *uri)
  90 {
  91   char *path;
  92   GFile *file;
  93   char *stripped_uri, *hash;
  94
  95   if (strchr (uri, '#') != NULL)
  96     {
  97       stripped_uri = g_strdup (uri);
  98       hash = strchr (stripped_uri, '#');
  99       *hash = 0;
 100     }
 101   else
 102     stripped_uri = (char *)uri;
 103
 104   path = g_filename_from_uri (stripped_uri, NULL, NULL);
 105
 106   if (stripped_uri != uri)
 107     g_free (stripped_uri);
 108
 109   if (path != NULL)
 110     file = _g_local_file_new (path);
 111   else
 112     file = _g_dummy_file_new (uri);
 113
 114   g_free (path);
 115
 116   return file;
 117 }
 118
 119 static const gchar * const *
 120 g_local_vfs_get_supported_uri_schemes (GVfs *vfs)
 121 {
 122   static const gchar * uri_schemes[] = { "file", NULL };
 123
 124   return uri_schemes;
 125 }
 126
 127 static GFile *
 128 g_local_vfs_parse_name (GVfs       *vfs,
 129                         const char *parse_name)
 130 {
 131   GFile *file;
 132   char *filename;
 133   char *user_prefix;
 134   const char *user_start, *user_end;
 135   char *rest;
 136
 137   g_return_val_if_fail (G_IS_VFS (vfs), NULL);
 138   g_return_val_if_fail (parse_name != NULL, NULL);
 139
 140   if (g_ascii_strncasecmp ("file:", parse_name, 5) == 0)
 141     filename = g_filename_from_uri (parse_name, NULL, NULL);
 142   else
 143     {
 144       if (*parse_name == '~')
 145         {
 146           parse_name ++;
 147           user_start = parse_name;
 148
 149           while (*parse_name != 0 && *parse_name != '/')
 150             parse_name++;
 151
 152           user_end = parse_name;
 153
 154           if (user_end == user_start)
 155             user_prefix = g_strdup (g_get_home_dir ());
 156           else
 157             {
 158 #ifdef HAVE_PWD_H
 159               struct passwd *passwd_file_entry;
 160               char *user_name;
 161
 162               user_name = g_strndup (user_start, user_end - user_start);
 163               passwd_file_entry = getpwnam (user_name);
 164               g_free (user_name);
 165
 166               if (passwd_file_entry != NULL &&
 167                   passwd_file_entry->pw_dir != NULL)
 168                 user_prefix = g_strdup (passwd_file_entry->pw_dir);
 169               else
 170 #endif
 171                 user_prefix = g_strdup (g_get_home_dir ());
 172             }
 173
 174           rest = NULL;
 175           if (*user_end != 0)
 176             rest = g_filename_from_utf8 (user_end, -1, NULL, NULL, NULL);
 177
 178           filename = g_build_filename (user_prefix, rest, NULL);
 179           g_free (rest);
 180           g_free (user_prefix);
 181         }
 182       else
 183         filename = g_filename_from_utf8 (parse_name, -1, NULL, NULL, NULL);
 184     }
 185
 186   if (filename == NULL)
 187     filename = g_strdup (parse_name);
 188
 189   file = _g_local_file_new (filename);
 190   g_free (filename);
 191
 192   return file;
 193 }
 194
 195 static gboolean
 196 g_local_vfs_is_active (GVfs *vfs)
 197 {
 198   return TRUE;
 199 }
 200
 201 static void
 202 g_local_vfs_class_init (GLocalVfsClass *class)
 203 {
 204   GObjectClass *object_class;
 205   GVfsClass *vfs_class;
 206
 207   object_class = (GObjectClass *) class;
 208
 209   object_class->finalize = g_local_vfs_finalize;
 210
 211   vfs_class = G_VFS_CLASS (class);
 212
 213   vfs_class->is_active = g_local_vfs_is_active;
 214   vfs_class->get_file_for_path = g_local_vfs_get_file_for_path;
 215   vfs_class->get_file_for_uri = g_local_vfs_get_file_for_uri;
 216   vfs_class->get_supported_uri_schemes = g_local_vfs_get_supported_uri_schemes;
 217   vfs_class->parse_name = g_local_vfs_parse_name;
 218 }