1 /* GIO - GLib Input, Output and Streaming Library
2 *
3 * Copyright (C) 2006-2007 Red Hat, Inc.
4 *
5 * SPDX-License-Identifier: LGPL-2.1-or-later
6 *
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General
18 * Public License along with this library; if not, see <http://www.gnu.org/licenses/>.
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 G_OS_UNIX
32 #include "glib-unix.h"
33 #include <pwd.h>
34 #endif
35 #include <string.h>
36
37
38 struct _GLocalVfs
39 {
40 GVfs parent;
41 };
42
43 struct _GLocalVfsClass
44 {
45 GVfsClass parent_class;
46
47 };
48
49 #define g_local_vfs_get_type _g_local_vfs_get_type
50 G_DEFINE_TYPE_WITH_CODE (GLocalVfs, g_local_vfs, G_TYPE_VFS,
51 _g_io_modules_ensure_extension_points_registered ();
52 g_io_extension_point_implement (G_VFS_EXTENSION_POINT_NAME,
53 g_define_type_id,
54 "local",
55 0))
56 static void
57 g_local_vfs_finalize (GObject *object)
58 {
59 /* must chain up */
60 G_OBJECT_CLASS (g_local_vfs_parent_class)->finalize (object);
61 }
62
63 static void
64 g_local_vfs_init (GLocalVfs *vfs)
65 {
66 }
67
68 /**
69 * g_local_vfs_new:
70 *
71 * Returns a new #GVfs handle for a local vfs.
72 *
73 * Returns: a new #GVfs handle.
74 **/
75 GVfs *
76 _g_local_vfs_new (void)
77 {
78 return g_object_new (G_TYPE_LOCAL_VFS, NULL);
79 }
80
81 static GFile *
82 g_local_vfs_get_file_for_path (GVfs *vfs,
83 const char *path)
84 {
85 if (*path == '\0')
86 return _g_dummy_file_new (path);
87 else
88 return _g_local_file_new (path);
89 }
90
91 static GFile *
92 g_local_vfs_get_file_for_uri (GVfs *vfs,
93 const char *uri)
94 {
95 char *path;
96 GFile *file;
97
98 path = g_filename_from_uri (uri, NULL, NULL);
99
100 if (path != NULL)
101 file = _g_local_file_new (path);
102 else
103 file = _g_dummy_file_new (uri);
104
105 g_free (path);
106
107 return file;
108 }
109
110 static const gchar * const *
111 g_local_vfs_get_supported_uri_schemes (GVfs *vfs)
112 {
113 static const gchar * uri_schemes[] = { "file", NULL };
114
115 return uri_schemes;
116 }
117
118 static GFile *
119 g_local_vfs_parse_name (GVfs *vfs,
120 const char *parse_name)
121 {
122 GFile *file;
123 char *filename;
124 char *user_prefix;
125 const char *user_end;
126 char *rest;
127
128 g_return_val_if_fail (G_IS_VFS (vfs), NULL);
129 g_return_val_if_fail (parse_name != NULL, NULL);
130
131 if (g_ascii_strncasecmp ("file:", parse_name, 5) == 0)
132 filename = g_filename_from_uri (parse_name, NULL, NULL);
133 else
134 {
135 if (*parse_name == '~')
136 {
137 #ifdef G_OS_UNIX
138 const char *user_start;
139 user_start = parse_name + 1;
140 #endif
141 parse_name ++;
142
143 while (*parse_name != 0 && *parse_name != '/')
144 parse_name++;
145
146 user_end = parse_name;
147
148 #ifdef G_OS_UNIX
149 if (user_end == user_start)
150 user_prefix = g_strdup (g_get_home_dir ());
151 else
152 {
153 struct passwd *passwd_file_entry;
154 char *user_name;
155
156 user_name = g_strndup (user_start, user_end - user_start);
157 passwd_file_entry = g_unix_get_passwd_entry (user_name, NULL);
158 g_free (user_name);
159
160 if (passwd_file_entry != NULL &&
161 passwd_file_entry->pw_dir != NULL)
162 user_prefix = g_strdup (passwd_file_entry->pw_dir);
163 else
164 user_prefix = g_strdup (g_get_home_dir ());
165
166 g_free (passwd_file_entry);
167 }
168 #else
169 user_prefix = g_strdup (g_get_home_dir ());
170 #endif
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 }