2 This file is part of GNUnet.
3 (C) 2001, 2002, 2004, 2005, 2006, 2007, 2009 Christian Grothoff (and other contributing authors)
5 GNUnet is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published
7 by the Free Software Foundation; either version 2, or (at your
8 option) any later version.
10 GNUnet is distributed in the hope that it will be useful, but
11 WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with GNUnet; see the file COPYING. If not, write to the
17 Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 Boston, MA 02111-1307, USA.
21 * @file fs/gnunet-download.c
22 * @brief downloading for files on GNUnet
23 * @author Christian Grothoff
24 * @author Krista Bennett
25 * @author James Blackwell
26 * @author Igor Wronsky
29 #include "gnunet_fs_service.h"
35 static int delete_incomplete;
37 static const struct GNUNET_CONFIGURATION_Handle *cfg;
39 static struct GNUNET_FS_Handle *ctx;
41 static struct GNUNET_SCHEDULER_Handle *sched;
43 static struct GNUNET_FS_DownloadContext *dc;
45 static unsigned int anonymity = 1;
47 static unsigned int parallelism = 16;
49 static unsigned int request_parallelism = 4092;
51 static int do_recursive;
53 static char *filename;
55 static int local_only;
58 cleanup_task (void *cls,
59 const struct GNUNET_SCHEDULER_TaskContext *tc)
67 shutdown_task (void *cls,
68 const struct GNUNET_SCHEDULER_TaskContext *tc)
70 struct GNUNET_FS_DownloadContext *d;
76 GNUNET_FS_download_stop (d, delete_incomplete);
82 * Called by FS client to give information about the progress of an
86 * @param info details about the event, specifying the event type
87 * and various bits about the event
88 * @return client-context (for the next progress call
89 * for this operation; should be set to NULL for
90 * SUSPEND and STOPPED events). The value returned
91 * will be passed to future callbacks in the respective
92 * field in the GNUNET_FS_ProgressInfo struct.
95 progress_cb (void *cls,
96 const struct GNUNET_FS_ProgressInfo *info)
101 switch (info->status)
103 case GNUNET_FS_STATUS_DOWNLOAD_START:
105 case GNUNET_FS_STATUS_DOWNLOAD_PROGRESS:
108 s = GNUNET_STRINGS_relative_time_to_string(info->value.download.eta);
109 t = GNUNET_STRINGS_byte_size_fancy(info->value.download.completed * 1000LL / (info->value.download.duration.value + 1));
111 _("Downloading `%s' at %llu/%llu (%s remaining, %s/s)\n"),
112 info->value.download.filename,
113 (unsigned long long) info->value.download.completed,
114 (unsigned long long) info->value.download.size,
121 case GNUNET_FS_STATUS_DOWNLOAD_ERROR:
123 _("Error downloading: %s.\n"),
124 info->value.download.specifics.error.message);
125 GNUNET_SCHEDULER_shutdown (sched);
127 case GNUNET_FS_STATUS_DOWNLOAD_COMPLETED:
128 s = GNUNET_STRINGS_byte_size_fancy(info->value.download.completed * 1000 / (info->value.download.duration.value + 1));
130 _("Downloading `%s' done (%s/s).\n"),
131 info->value.download.filename,
134 if (info->value.download.dc == dc)
135 GNUNET_SCHEDULER_shutdown (sched);
137 case GNUNET_FS_STATUS_DOWNLOAD_STOPPED:
138 if (info->value.download.dc == dc)
139 GNUNET_SCHEDULER_add_continuation (sched,
142 GNUNET_SCHEDULER_REASON_PREREQ_DONE);
144 case GNUNET_FS_STATUS_DOWNLOAD_ACTIVE:
145 case GNUNET_FS_STATUS_DOWNLOAD_INACTIVE:
149 _("Unexpected status: %d\n"),
158 * Main function that will be run by the scheduler.
161 * @param s the scheduler to use
162 * @param args remaining command-line arguments
163 * @param cfgfile name of the configuration file used (for saving, can be NULL!)
164 * @param c configuration
168 struct GNUNET_SCHEDULER_Handle *s,
171 const struct GNUNET_CONFIGURATION_Handle *c)
173 struct GNUNET_FS_Uri *uri;
175 enum GNUNET_FS_DownloadOptions options;
178 uri = GNUNET_FS_uri_parse (args[0],
183 _("Failed to parse URI: %s\n"),
189 if (! GNUNET_FS_uri_test_chk (uri))
192 "Only CHK URIs supported right now.\n");
194 GNUNET_FS_uri_destroy (uri);
197 if (NULL == filename)
200 "Target filename must be specified.\n");
202 GNUNET_FS_uri_destroy (uri);
206 ctx = GNUNET_FS_start (sched,
211 GNUNET_FS_FLAGS_NONE,
212 GNUNET_FS_OPTIONS_DOWNLOAD_PARALLELISM,
214 GNUNET_FS_OPTIONS_REQUEST_PARALLELISM,
216 GNUNET_FS_OPTIONS_END);
220 _("Could not initialize `%s' subsystem.\n"),
222 GNUNET_FS_uri_destroy (uri);
226 options = GNUNET_FS_DOWNLOAD_OPTION_NONE;
228 options |= GNUNET_FS_DOWNLOAD_OPTION_RECURSIVE;
230 options |= GNUNET_FS_DOWNLOAD_OPTION_LOOPBACK_ONLY;
231 dc = GNUNET_FS_download_start (ctx,
236 GNUNET_FS_uri_chk_get_file_size (uri),
241 GNUNET_FS_uri_destroy (uri);
244 GNUNET_FS_stop (ctx);
248 GNUNET_SCHEDULER_add_delayed (sched,
249 GNUNET_TIME_UNIT_FOREVER_REL,
256 * gnunet-download command line options
258 static struct GNUNET_GETOPT_CommandLineOption options[] = {
259 {'a', "anonymity", "LEVEL",
260 gettext_noop ("set the desired LEVEL of receiver-anonymity"),
261 1, &GNUNET_GETOPT_set_uint, &anonymity},
262 {'D', "delete-incomplete", NULL,
263 gettext_noop ("delete incomplete downloads (when aborted with CTRL-C)"),
264 0, &GNUNET_GETOPT_set_one, &delete_incomplete},
265 {'n', "no-network", NULL,
266 gettext_noop ("only search the local peer (no P2P network search)"),
267 1, &GNUNET_GETOPT_set_uint, &local_only},
268 {'o', "output", "FILENAME",
269 gettext_noop ("write the file to FILENAME"),
270 1, &GNUNET_GETOPT_set_string, &filename},
271 {'p', "parallelism", "DOWNLOADS",
273 ("set the maximum number of parallel downloads that is allowed"),
274 1, &GNUNET_GETOPT_set_uint, ¶llelism},
275 {'r', "request-parallelism", "REQUESTS",
277 ("set the maximum number of parallel requests for blocks that is allowed"),
278 1, &GNUNET_GETOPT_set_uint, &request_parallelism},
279 {'R', "recursive", NULL,
280 gettext_noop ("download a GNUnet directory recursively"),
281 0, &GNUNET_GETOPT_set_one, &do_recursive},
282 {'V', "verbose", NULL,
283 gettext_noop ("be verbose (print progress information)"),
284 0, &GNUNET_GETOPT_set_one, &verbose},
285 GNUNET_GETOPT_OPTION_END
290 * The main function to download GNUnet.
292 * @param argc number of arguments from the command line
293 * @param argv command line arguments
294 * @return 0 ok, 1 on error
297 main (int argc, char *const *argv)
300 GNUNET_PROGRAM_run (argc,
304 ("Download files from GNUnet."),
305 options, &run, NULL)) ? ret : 1;
308 /* end of gnunet-download.c */