1 /*
2 * Copyright 2015 Red Hat, Inc.
3 *
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
8 *
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
13 *
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
16 *
17 * Author: Matthias Clasen <mclasen@redhat.com>
18 */
19
20 #include "config.h"
21
22 #include <gio/gio.h>
23 #include <gi18n.h>
24
25 #include "gio-tool.h"
26
27 static gchar **watch_dirs;
28 static gchar **watch_files;
29 static gchar **watch_direct;
30 static gchar **watch_silent;
31 static gchar **watch_default;
32 static gboolean no_moves;
33 static gboolean mounts;
34
35 static const GOptionEntry entries[] = {
36 { "dir", 'd', 0, G_OPTION_ARG_FILENAME_ARRAY, &watch_dirs,
37 N_("Monitor a directory (default: depends on type)"), N_("LOCATION") },
38 { "file", 'f', 0, G_OPTION_ARG_FILENAME_ARRAY, &watch_files,
39 N_("Monitor a file (default: depends on type)"), N_("LOCATION") },
40 { "direct", 'D', 0, G_OPTION_ARG_FILENAME_ARRAY, &watch_direct,
41 N_("Monitor a file directly (notices changes made via hardlinks)"), N_("LOCATION") },
42 { "silent", 's', 0, G_OPTION_ARG_FILENAME_ARRAY, &watch_silent,
43 N_("Monitors a file directly, but doesn’t report changes"), N_("LOCATION") },
44 { "no-moves", 'n', 0, G_OPTION_ARG_NONE, &no_moves,
45 N_("Report moves and renames as simple deleted/created events"), NULL },
46 { "mounts", 'm', 0, G_OPTION_ARG_NONE, &mounts,
47 N_("Watch for mount events"), NULL },
48 { G_OPTION_REMAINING, 0, 0, G_OPTION_ARG_FILENAME_ARRAY, &watch_default,
49 NULL, NULL },
50 { NULL }
51 };
52
53 static void
watch_callback(GFileMonitor * monitor,GFile * child,GFile * other,GFileMonitorEvent event_type,gpointer user_data)54 watch_callback (GFileMonitor *monitor,
55 GFile *child,
56 GFile *other,
57 GFileMonitorEvent event_type,
58 gpointer user_data)
59 {
60 gchar *child_str;
61 gchar *other_str;
62
63 g_assert (child);
64
65 if (g_file_is_native (child))
66 child_str = g_file_get_path (child);
67 else
68 child_str = g_file_get_uri (child);
69
70 if (other)
71 {
72 if (g_file_is_native (other))
73 other_str = g_file_get_path (other);
74 else
75 other_str = g_file_get_uri (other);
76 }
77 else
78 other_str = g_strdup ("(none)");
79
80 g_print ("%s: ", (gchar *) user_data);
81 switch (event_type)
82 {
83 case G_FILE_MONITOR_EVENT_CHANGED:
84 g_assert (!other);
85 g_print ("%s: changed", child_str);
86 break;
87 case G_FILE_MONITOR_EVENT_CHANGES_DONE_HINT:
88 g_assert (!other);
89 g_print ("%s: changes done", child_str);
90 break;
91 case G_FILE_MONITOR_EVENT_DELETED:
92 g_assert (!other);
93 g_print ("%s: deleted", child_str);
94 break;
95 case G_FILE_MONITOR_EVENT_CREATED:
96 g_assert (!other);
97 g_print ("%s: created", child_str);
98 break;
99 case G_FILE_MONITOR_EVENT_ATTRIBUTE_CHANGED:
100 g_assert (!other);
101 g_print ("%s: attributes changed", child_str);
102 break;
103 case G_FILE_MONITOR_EVENT_PRE_UNMOUNT:
104 g_assert (!other);
105 g_print ("%s: pre-unmount", child_str);
106 break;
107 case G_FILE_MONITOR_EVENT_UNMOUNTED:
108 g_assert (!other);
109 g_print ("%s: unmounted", child_str);
110 break;
111 case G_FILE_MONITOR_EVENT_MOVED_IN:
112 g_print ("%s: moved in", child_str);
113 if (other)
114 g_print (" (from %s)", other_str);
115 break;
116 case G_FILE_MONITOR_EVENT_MOVED_OUT:
117 g_print ("%s: moved out", child_str);
118 if (other)
119 g_print (" (to %s)", other_str);
120 break;
121 case G_FILE_MONITOR_EVENT_RENAMED:
122 g_assert (other);
123 g_print ("%s: renamed to %s\n", child_str, other_str);
124 break;
125
126 case G_FILE_MONITOR_EVENT_MOVED:
127 default:
128 g_assert_not_reached ();
129 }
130
131 g_free (child_str);
132 g_free (other_str);
133 g_print ("\n");
134 }
135
136 typedef enum
137 {
138 WATCH_DIR,
139 WATCH_FILE,
140 WATCH_AUTO
141 } WatchType;
142
143 static gboolean
add_watch(const gchar * cmdline,WatchType watch_type,GFileMonitorFlags flags,gboolean connect_handler)144 add_watch (const gchar *cmdline,
145 WatchType watch_type,
146 GFileMonitorFlags flags,
147 gboolean connect_handler)
148 {
149 GFileMonitor *monitor = NULL;
150 GError *error = NULL;
151 GFile *file;
152
153 file = g_file_new_for_commandline_arg (cmdline);
154
155 if (watch_type == WATCH_AUTO)
156 {
157 GFileInfo *info;
158 guint32 type;
159
160 info = g_file_query_info (file, G_FILE_ATTRIBUTE_STANDARD_TYPE, G_FILE_QUERY_INFO_NONE, NULL, &error);
161 if (!info)
162 goto err;
163
164 type = g_file_info_get_attribute_uint32 (info, G_FILE_ATTRIBUTE_STANDARD_TYPE);
165 watch_type = (type == G_FILE_TYPE_DIRECTORY) ? WATCH_DIR : WATCH_FILE;
166 }
167
168 if (watch_type == WATCH_DIR)
169 monitor = g_file_monitor_directory (file, flags, NULL, &error);
170 else
171 monitor = g_file_monitor (file, flags, NULL, &error);
172
173 if (!monitor)
174 goto err;
175
176 if (connect_handler)
177 g_signal_connect (monitor, "changed", G_CALLBACK (watch_callback), g_strdup (cmdline));
178
179 monitor = NULL; /* leak */
180 g_object_unref (file);
181
182 return TRUE;
183
184 err:
185 print_file_error (file, error->message);
186 g_error_free (error);
187 g_object_unref (file);
188
189 return FALSE;
190 }
191
192 int
handle_monitor(int argc,gchar * argv[],gboolean do_help)193 handle_monitor (int argc, gchar *argv[], gboolean do_help)
194 {
195 GOptionContext *context;
196 gchar *param;
197 GError *error = NULL;
198 GFileMonitorFlags flags;
199 guint i;
200
201 g_set_prgname ("gio monitor");
202
203 /* Translators: commandline placeholder */
204 param = g_strdup_printf ("%s…", _("LOCATION"));
205 context = g_option_context_new (param);
206 g_free (param);
207 g_option_context_set_help_enabled (context, FALSE);
208 g_option_context_set_summary (context,
209 _("Monitor files or directories for changes."));
210 g_option_context_add_main_entries (context, entries, GETTEXT_PACKAGE);
211
212 if (do_help)
213 {
214 show_help (context, NULL);
215 g_option_context_free (context);
216 return 0;
217 }
218
219 if (!g_option_context_parse (context, &argc, &argv, &error))
220 {
221 show_help (context, error->message);
222 g_error_free (error);
223 g_option_context_free (context);
224 return 1;
225 }
226
227 if (!watch_dirs && !watch_files && !watch_direct && !watch_silent && !watch_default)
228 {
229 show_help (context, _("No locations given"));
230 g_option_context_free (context);
231 return 1;
232 }
233
234 g_option_context_free (context);
235
236 flags = (no_moves ? 0 : G_FILE_MONITOR_WATCH_MOVES) |
237 (mounts ? G_FILE_MONITOR_WATCH_MOUNTS : 0);
238
239 if (watch_dirs)
240 {
241 for (i = 0; watch_dirs[i]; i++)
242 if (!add_watch (watch_dirs[i], WATCH_DIR, flags, TRUE))
243 return 1;
244 }
245
246 if (watch_files)
247 {
248 for (i = 0; watch_files[i]; i++)
249 if (!add_watch (watch_files[i], WATCH_FILE, flags, TRUE))
250 return 1;
251 }
252
253 if (watch_direct)
254 {
255 for (i = 0; watch_direct[i]; i++)
256 if (!add_watch (watch_direct[i], WATCH_FILE, flags | G_FILE_MONITOR_WATCH_HARD_LINKS, TRUE))
257 return 1;
258 }
259
260 if (watch_silent)
261 {
262 for (i = 0; watch_silent[i]; i++)
263 if (!add_watch (watch_silent[i], WATCH_FILE, flags | G_FILE_MONITOR_WATCH_HARD_LINKS, FALSE))
264 return 1;
265 }
266
267 if (watch_default)
268 {
269 for (i = 0; watch_default[i]; i++)
270 if (!add_watch (watch_default[i], WATCH_AUTO, flags, TRUE))
271 return 1;
272 }
273
274 while (TRUE)
275 g_main_context_iteration (NULL, TRUE);
276
277 return 0;
278 }
279