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 3, 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_FS_DownloadContext *dc;
43 static unsigned int anonymity = 1;
45 static unsigned int parallelism = 16;
47 static unsigned int request_parallelism = 4092;
49 static int do_recursive;
51 static char *filename;
53 static int local_only;
56 cleanup_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
64 shutdown_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
66 struct GNUNET_FS_DownloadContext *d;
72 GNUNET_FS_download_stop (d, delete_incomplete);
78 * Display progress bar (if tty).
80 * @param x current position in the download
81 * @param n total size of the download
82 * @param w desired number of steps in the progress bar
85 display_bar (unsigned long long x,
98 if (FILE_TYPE_CHAR != GetFileType (GetStdHandle (STD_OUTPUT_HANDLE)))
101 ratio_complete = x/(float)n;
102 endeq = ratio_complete * w;
103 GNUNET_snprintf (buf, sizeof (buf),
104 "%3d%% [", (int)(ratio_complete*100) );
105 for (p=0; p<endeq; p++)
107 for (p=endeq; p<w; p++)
116 * Called by FS client to give information about the progress of an
120 * @param info details about the event, specifying the event type
121 * and various bits about the event
122 * @return client-context (for the next progress call
123 * for this operation; should be set to NULL for
124 * SUSPEND and STOPPED events). The value returned
125 * will be passed to future callbacks in the respective
126 * field in the GNUNET_FS_ProgressInfo struct.
129 progress_cb (void *cls, const struct GNUNET_FS_ProgressInfo *info)
135 switch (info->status)
137 case GNUNET_FS_STATUS_DOWNLOAD_START:
139 FPRINTF (stderr, _("Starting download `%s'.\n"),
140 info->value.download.filename);
142 case GNUNET_FS_STATUS_DOWNLOAD_PROGRESS:
145 s = GNUNET_STRINGS_relative_time_to_string (info->value.download.eta);
146 if (info->value.download.specifics.progress.block_download_duration.rel_value
147 == GNUNET_TIME_UNIT_FOREVER_REL.rel_value)
148 s2 = GNUNET_strdup (_("<unknown time>"));
150 s2 = GNUNET_STRINGS_relative_time_to_string (
151 info->value.download.specifics.progress.block_download_duration);
152 t = GNUNET_STRINGS_byte_size_fancy (info->value.download.completed *
154 (info->value.download.
155 duration.rel_value + 1));
157 _("Downloading `%s' at %llu/%llu (%s remaining, %s/s). Block took %s to download\n"),
158 info->value.download.filename,
159 (unsigned long long) info->value.download.completed,
160 (unsigned long long) info->value.download.size, s, t, s2);
167 display_bar (info->value.download.completed,
168 info->value.download.size,
172 case GNUNET_FS_STATUS_DOWNLOAD_ERROR:
173 FPRINTF (stderr, _("Error downloading: %s.\n"),
174 info->value.download.specifics.error.message);
175 GNUNET_SCHEDULER_shutdown ();
177 case GNUNET_FS_STATUS_DOWNLOAD_COMPLETED:
178 s = GNUNET_STRINGS_byte_size_fancy (info->value.download.completed * 1000 /
179 (info->value.download.
180 duration.rel_value + 1));
181 FPRINTF (stdout, _("Downloading `%s' done (%s/s).\n"),
182 info->value.download.filename, s);
184 if (info->value.download.dc == dc)
185 GNUNET_SCHEDULER_shutdown ();
187 case GNUNET_FS_STATUS_DOWNLOAD_STOPPED:
188 if (info->value.download.dc == dc)
189 GNUNET_SCHEDULER_add_continuation (&cleanup_task, NULL,
190 GNUNET_SCHEDULER_REASON_PREREQ_DONE);
192 case GNUNET_FS_STATUS_DOWNLOAD_ACTIVE:
193 case GNUNET_FS_STATUS_DOWNLOAD_INACTIVE:
196 FPRINTF (stderr, _("Unexpected status: %d\n"), info->status);
204 * Main function that will be run by the scheduler.
207 * @param args remaining command-line arguments
208 * @param cfgfile name of the configuration file used (for saving, can be NULL!)
209 * @param c configuration
212 run (void *cls, char *const *args, const char *cfgfile,
213 const struct GNUNET_CONFIGURATION_Handle *c)
215 struct GNUNET_FS_Uri *uri;
217 enum GNUNET_FS_DownloadOptions options;
221 FPRINTF (stderr, "%s", _("You need to specify a URI argument.\n"));
224 uri = GNUNET_FS_uri_parse (args[0], &emsg);
227 FPRINTF (stderr, _("Failed to parse URI: %s\n"), emsg);
232 if ((!GNUNET_FS_uri_test_chk (uri)) && (!GNUNET_FS_uri_test_loc (uri)))
234 FPRINTF (stderr, "%s", _("Only CHK or LOC URIs supported.\n"));
236 GNUNET_FS_uri_destroy (uri);
239 if (NULL == filename)
241 FPRINTF (stderr, "%s", _("Target filename must be specified.\n"));
243 GNUNET_FS_uri_destroy (uri);
248 GNUNET_FS_start (cfg, "gnunet-download", &progress_cb, NULL,
249 GNUNET_FS_FLAGS_NONE,
250 GNUNET_FS_OPTIONS_DOWNLOAD_PARALLELISM, parallelism,
251 GNUNET_FS_OPTIONS_REQUEST_PARALLELISM,
252 request_parallelism, GNUNET_FS_OPTIONS_END);
255 FPRINTF (stderr, _("Could not initialize `%s' subsystem.\n"), "FS");
256 GNUNET_FS_uri_destroy (uri);
260 options = GNUNET_FS_DOWNLOAD_OPTION_NONE;
262 options |= GNUNET_FS_DOWNLOAD_OPTION_RECURSIVE;
264 options |= GNUNET_FS_DOWNLOAD_OPTION_LOOPBACK_ONLY;
265 dc = GNUNET_FS_download_start (ctx, uri, NULL, filename, NULL, 0,
266 GNUNET_FS_uri_chk_get_file_size (uri),
267 anonymity, options, NULL, NULL);
268 GNUNET_FS_uri_destroy (uri);
271 GNUNET_FS_stop (ctx);
275 GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL, &shutdown_task,
281 * The main function to download GNUnet.
283 * @param argc number of arguments from the command line
284 * @param argv command line arguments
285 * @return 0 ok, 1 on error
288 main (int argc, char *const *argv)
290 static const struct GNUNET_GETOPT_CommandLineOption options[] = {
291 {'a', "anonymity", "LEVEL",
292 gettext_noop ("set the desired LEVEL of receiver-anonymity"),
293 1, &GNUNET_GETOPT_set_uint, &anonymity},
294 {'D', "delete-incomplete", NULL,
295 gettext_noop ("delete incomplete downloads (when aborted with CTRL-C)"),
296 0, &GNUNET_GETOPT_set_one, &delete_incomplete},
297 {'n', "no-network", NULL,
298 gettext_noop ("only search the local peer (no P2P network search)"),
299 0, &GNUNET_GETOPT_set_uint, &local_only},
300 {'o', "output", "FILENAME",
301 gettext_noop ("write the file to FILENAME"),
302 1, &GNUNET_GETOPT_set_string, &filename},
303 {'p', "parallelism", "DOWNLOADS",
305 ("set the maximum number of parallel downloads that is allowed"),
306 1, &GNUNET_GETOPT_set_uint, ¶llelism},
307 {'r', "request-parallelism", "REQUESTS",
309 ("set the maximum number of parallel requests for blocks that is allowed"),
310 1, &GNUNET_GETOPT_set_uint, &request_parallelism},
311 {'R', "recursive", NULL,
312 gettext_noop ("download a GNUnet directory recursively"),
313 0, &GNUNET_GETOPT_set_one, &do_recursive},
314 {'V', "verbose", NULL,
315 gettext_noop ("be verbose (print progress information)"),
316 0, &GNUNET_GETOPT_increment_value, &verbose},
317 GNUNET_GETOPT_OPTION_END
320 if (GNUNET_OK != GNUNET_STRINGS_get_utf8_args (argc, argv, &argc, &argv))
324 GNUNET_PROGRAM_run (argc, argv, "gnunet-download [OPTIONS] URI",
326 ("Download files from GNUnet using a GNUnet CHK or LOC URI (gnunet://fs/chk/...)"),
327 options, &run, NULL)) ? ret : 1;
330 /* end of gnunet-download.c */