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-rw-r--r--src/fs/gnunet-download.c281
1 files changed, 281 insertions, 0 deletions
diff --git a/src/fs/gnunet-download.c b/src/fs/gnunet-download.c
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+++ b/src/fs/gnunet-download.c
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+/*
+ This file is part of GNUnet.
+ (C) 2001, 2002, 2004, 2005, 2006, 2007, 2009 Christian Grothoff (and other contributing authors)
+
+ GNUnet is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published
+ by the Free Software Foundation; either version 3, or (at your
+ option) any later version.
+
+ GNUnet is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with GNUnet; see the file COPYING. If not, write to the
+ Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA.
+*/
+/**
+ * @file fs/gnunet-download.c
+ * @brief downloading for files on GNUnet
+ * @author Christian Grothoff
+ * @author Krista Bennett
+ * @author James Blackwell
+ * @author Igor Wronsky
+ */
+#include "platform.h"
+#include "gnunet_fs_service.h"
+
+static int ret;
+
+static int verbose;
+
+static int delete_incomplete;
+
+static const struct GNUNET_CONFIGURATION_Handle *cfg;
+
+static struct GNUNET_FS_Handle *ctx;
+
+static struct GNUNET_FS_DownloadContext *dc;
+
+static unsigned int anonymity = 1;
+
+static unsigned int parallelism = 16;
+
+static unsigned int request_parallelism = 4092;
+
+static int do_recursive;
+
+static char *filename;
+
+static int local_only;
+
+static void
+cleanup_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+{
+ GNUNET_FS_stop (ctx);
+ ctx = NULL;
+}
+
+
+static void
+shutdown_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+{
+ struct GNUNET_FS_DownloadContext *d;
+
+ if (dc != NULL)
+ {
+ d = dc;
+ dc = NULL;
+ GNUNET_FS_download_stop (d, delete_incomplete);
+ }
+}
+
+
+/**
+ * Called by FS client to give information about the progress of an
+ * operation.
+ *
+ * @param cls closure
+ * @param info details about the event, specifying the event type
+ * and various bits about the event
+ * @return client-context (for the next progress call
+ * for this operation; should be set to NULL for
+ * SUSPEND and STOPPED events). The value returned
+ * will be passed to future callbacks in the respective
+ * field in the GNUNET_FS_ProgressInfo struct.
+ */
+static void *
+progress_cb (void *cls, const struct GNUNET_FS_ProgressInfo *info)
+{
+ char *s, *s2;
+ char *t;
+
+ switch (info->status)
+ {
+ case GNUNET_FS_STATUS_DOWNLOAD_START:
+ if (verbose > 1)
+ FPRINTF (stderr, _("Starting download `%s'.\n"),
+ info->value.download.filename);
+ break;
+ case GNUNET_FS_STATUS_DOWNLOAD_PROGRESS:
+ if (verbose)
+ {
+ s = GNUNET_STRINGS_relative_time_to_string (info->value.download.eta);
+ if (info->value.download.specifics.progress.block_download_duration.rel_value
+ == GNUNET_TIME_UNIT_FOREVER_REL.rel_value)
+ s2 = GNUNET_strdup (_("<unknown time>"));
+ else
+ s2 = GNUNET_STRINGS_relative_time_to_string (
+ info->value.download.specifics.progress.block_download_duration);
+ t = GNUNET_STRINGS_byte_size_fancy (info->value.download.completed *
+ 1000LL /
+ (info->value.download.
+ duration.rel_value + 1));
+ FPRINTF (stdout,
+ _("Downloading `%s' at %llu/%llu (%s remaining, %s/s). Block took %s to download\n"),
+ info->value.download.filename,
+ (unsigned long long) info->value.download.completed,
+ (unsigned long long) info->value.download.size, s, t, s2);
+ GNUNET_free (s);
+ GNUNET_free (s2);
+ GNUNET_free (t);
+ }
+ break;
+ case GNUNET_FS_STATUS_DOWNLOAD_ERROR:
+ FPRINTF (stderr, _("Error downloading: %s.\n"),
+ info->value.download.specifics.error.message);
+ GNUNET_SCHEDULER_shutdown ();
+ break;
+ case GNUNET_FS_STATUS_DOWNLOAD_COMPLETED:
+ s = GNUNET_STRINGS_byte_size_fancy (info->value.download.completed * 1000 /
+ (info->value.download.
+ duration.rel_value + 1));
+ FPRINTF (stdout, _("Downloading `%s' done (%s/s).\n"),
+ info->value.download.filename, s);
+ GNUNET_free (s);
+ if (info->value.download.dc == dc)
+ GNUNET_SCHEDULER_shutdown ();
+ break;
+ case GNUNET_FS_STATUS_DOWNLOAD_STOPPED:
+ if (info->value.download.dc == dc)
+ GNUNET_SCHEDULER_add_continuation (&cleanup_task, NULL,
+ GNUNET_SCHEDULER_REASON_PREREQ_DONE);
+ break;
+ case GNUNET_FS_STATUS_DOWNLOAD_ACTIVE:
+ case GNUNET_FS_STATUS_DOWNLOAD_INACTIVE:
+ break;
+ default:
+ FPRINTF (stderr, _("Unexpected status: %d\n"), info->status);
+ break;
+ }
+ return NULL;
+}
+
+
+/**
+ * Main function that will be run by the scheduler.
+ *
+ * @param cls closure
+ * @param args remaining command-line arguments
+ * @param cfgfile name of the configuration file used (for saving, can be NULL!)
+ * @param c configuration
+ */
+static void
+run (void *cls, char *const *args, const char *cfgfile,
+ const struct GNUNET_CONFIGURATION_Handle *c)
+{
+ struct GNUNET_FS_Uri *uri;
+ char *emsg;
+ enum GNUNET_FS_DownloadOptions options;
+
+ if (NULL == args[0])
+ {
+ FPRINTF (stderr, "%s", _("You need to specify a URI argument.\n"));
+ return;
+ }
+ uri = GNUNET_FS_uri_parse (args[0], &emsg);
+ if (NULL == uri)
+ {
+ FPRINTF (stderr, _("Failed to parse URI: %s\n"), emsg);
+ GNUNET_free (emsg);
+ ret = 1;
+ return;
+ }
+ if ((!GNUNET_FS_uri_test_chk (uri)) && (!GNUNET_FS_uri_test_loc (uri)))
+ {
+ FPRINTF (stderr, "%s", _("Only CHK or LOC URIs supported.\n"));
+ ret = 1;
+ GNUNET_FS_uri_destroy (uri);
+ return;
+ }
+ if (NULL == filename)
+ {
+ FPRINTF (stderr, "%s", _("Target filename must be specified.\n"));
+ ret = 1;
+ GNUNET_FS_uri_destroy (uri);
+ return;
+ }
+ cfg = c;
+ ctx =
+ GNUNET_FS_start (cfg, "gnunet-download", &progress_cb, NULL,
+ GNUNET_FS_FLAGS_NONE,
+ GNUNET_FS_OPTIONS_DOWNLOAD_PARALLELISM, parallelism,
+ GNUNET_FS_OPTIONS_REQUEST_PARALLELISM,
+ request_parallelism, GNUNET_FS_OPTIONS_END);
+ if (NULL == ctx)
+ {
+ FPRINTF (stderr, _("Could not initialize `%s' subsystem.\n"), "FS");
+ GNUNET_FS_uri_destroy (uri);
+ ret = 1;
+ return;
+ }
+ options = GNUNET_FS_DOWNLOAD_OPTION_NONE;
+ if (do_recursive)
+ options |= GNUNET_FS_DOWNLOAD_OPTION_RECURSIVE;
+ if (local_only)
+ options |= GNUNET_FS_DOWNLOAD_OPTION_LOOPBACK_ONLY;
+ dc = GNUNET_FS_download_start (ctx, uri, NULL, filename, NULL, 0,
+ GNUNET_FS_uri_chk_get_file_size (uri),
+ anonymity, options, NULL, NULL);
+ GNUNET_FS_uri_destroy (uri);
+ if (dc == NULL)
+ {
+ GNUNET_FS_stop (ctx);
+ ctx = NULL;
+ return;
+ }
+ GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL, &shutdown_task,
+ NULL);
+}
+
+
+/**
+ * The main function to download GNUnet.
+ *
+ * @param argc number of arguments from the command line
+ * @param argv command line arguments
+ * @return 0 ok, 1 on error
+ */
+int
+main (int argc, char *const *argv)
+{
+ static const struct GNUNET_GETOPT_CommandLineOption options[] = {
+ {'a', "anonymity", "LEVEL",
+ gettext_noop ("set the desired LEVEL of receiver-anonymity"),
+ 1, &GNUNET_GETOPT_set_uint, &anonymity},
+ {'D', "delete-incomplete", NULL,
+ gettext_noop ("delete incomplete downloads (when aborted with CTRL-C)"),
+ 0, &GNUNET_GETOPT_set_one, &delete_incomplete},
+ {'n', "no-network", NULL,
+ gettext_noop ("only search the local peer (no P2P network search)"),
+ 0, &GNUNET_GETOPT_set_uint, &local_only},
+ {'o', "output", "FILENAME",
+ gettext_noop ("write the file to FILENAME"),
+ 1, &GNUNET_GETOPT_set_string, &filename},
+ {'p', "parallelism", "DOWNLOADS",
+ gettext_noop
+ ("set the maximum number of parallel downloads that is allowed"),
+ 1, &GNUNET_GETOPT_set_uint, &parallelism},
+ {'r', "request-parallelism", "REQUESTS",
+ gettext_noop
+ ("set the maximum number of parallel requests for blocks that is allowed"),
+ 1, &GNUNET_GETOPT_set_uint, &request_parallelism},
+ {'R', "recursive", NULL,
+ gettext_noop ("download a GNUnet directory recursively"),
+ 0, &GNUNET_GETOPT_set_one, &do_recursive},
+ {'V', "verbose", NULL,
+ gettext_noop ("be verbose (print progress information)"),
+ 0, &GNUNET_GETOPT_increment_value, &verbose},
+ GNUNET_GETOPT_OPTION_END
+ };
+ return (GNUNET_OK ==
+ GNUNET_PROGRAM_run (argc, argv, "gnunet-download [OPTIONS] URI",
+ gettext_noop
+ ("Download files from GNUnet using a GNUnet CHK or LOC URI (gnunet://fs/chk/...)"),
+ options, &run, NULL)) ? ret : 1;
+}
+
+/* end of gnunet-download.c */
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-11-21 20:25:32 +0000