/*
This file is part of GNUnet.
- (C) 2001, 2002, 2004, 2005, 2006, 2007, 2009 Christian Grothoff (and other contributing authors)
+ Copyright (C) 2001, 2002, 2004, 2005, 2006, 2007, 2009 GNUnet e.V.
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 2, or (at your
+ 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
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.
+ Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ Boston, MA 02110-1301, USA.
*/
/**
* @file fs/gnunet-search.c
* @author Krista Bennett
* @author James Blackwell
* @author Igor Wronsky
- *
- * TODO:
- * - all
*/
#include "platform.h"
#include "gnunet_fs_service.h"
static struct GNUNET_FS_Handle *ctx;
-static struct GNUNET_TIME_Absolute start_time;
+static struct GNUNET_FS_SearchContext *sc;
+
+static char *output_filename;
+
+static struct GNUNET_FS_DirectoryBuilder *db;
static unsigned int anonymity = 1;
+/**
+ * Timeout for the search, 0 means to wait for CTRL-C.
+ */
+static struct GNUNET_TIME_Relative timeout;
+
+static unsigned int results_limit;
+
+static unsigned int results;
+
+static int verbose;
+
+static int local_only;
+
+static struct GNUNET_SCHEDULER_Task *tt;
+
+
+/**
+ * Type of a function that libextractor calls for each
+ * meta data item found.
+ *
+ * @param cls closure (user-defined, unused)
+ * @param plugin_name name of the plugin that produced this value;
+ * special values can be used (i.e. '<zlib>' for zlib being
+ * used in the main libextractor library and yielding
+ * meta data).
+ * @param type libextractor-type describing the meta data
+ * @param format basic format information about data
+ * @param data_mime_type mime-type of data (not of the original file);
+ * can be NULL (if mime-type is not known)
+ * @param data actual meta-data found
+ * @param data_size number of bytes in data
+ * @return 0 to continue extracting, 1 to abort
+ */
+static int
+item_printer (void *cls, const char *plugin_name, enum EXTRACTOR_MetaType type,
+ enum EXTRACTOR_MetaFormat format, const char *data_mime_type,
+ const char *data, size_t data_size)
+{
+ if ((format != EXTRACTOR_METAFORMAT_UTF8) &&
+ (format != EXTRACTOR_METAFORMAT_C_STRING))
+ return 0;
+ if (type == EXTRACTOR_METATYPE_GNUNET_ORIGINAL_FILENAME)
+ return 0;
+#if HAVE_LIBEXTRACTOR
+ printf ("\t%20s: %s\n",
+ dgettext (LIBEXTRACTOR_GETTEXT_DOMAIN,
+ EXTRACTOR_metatype_to_string (type)), data);
+#else
+ printf ("\t%20d: %s\n",
+ type,
+ data);
+#endif
+ return 0;
+}
+
+
+static void
+clean_task (void *cls)
+{
+ size_t dsize;
+ void *ddata;
+
+ GNUNET_FS_stop (ctx);
+ ctx = NULL;
+ if (output_filename == NULL)
+ return;
+ if (GNUNET_OK != GNUNET_FS_directory_builder_finish (db, &dsize, &ddata))
+ {
+ GNUNET_break (0);
+ GNUNET_free (output_filename);
+ return;
+ }
+ if (dsize !=
+ GNUNET_DISK_fn_write (output_filename, ddata, dsize,
+ GNUNET_DISK_PERM_USER_READ |
+ GNUNET_DISK_PERM_USER_WRITE))
+ {
+ FPRINTF (stderr,
+ _("Failed to write directory with search results to `%s'\n"),
+ output_filename);
+ }
+ GNUNET_free_non_null (ddata);
+ GNUNET_free (output_filename);
+}
+
/**
- * Called by FS client to give information about the progress of an
+ * Called by FS client to give information about the progress of an
* operation.
*
* @param cls closure
* field in the GNUNET_FS_ProgressInfo struct.
*/
static void *
-progress_cb (void *cls,
- const struct GNUNET_FS_ProgressInfo *info)
+progress_cb (void *cls, const struct GNUNET_FS_ProgressInfo *info)
{
+ static unsigned int cnt;
+ int is_directory;
+ char *uri;
+ char *filename;
+
+ switch (info->status)
+ {
+ case GNUNET_FS_STATUS_SEARCH_START:
+ break;
+ case GNUNET_FS_STATUS_SEARCH_RESULT:
+ if (db != NULL)
+ GNUNET_FS_directory_builder_add (db,
+ info->value.search.specifics.result.uri,
+ info->value.search.specifics.result.meta,
+ NULL);
+ uri = GNUNET_FS_uri_to_string (info->value.search.specifics.result.uri);
+ printf ("#%u:\n", cnt++);
+ filename =
+ GNUNET_CONTAINER_meta_data_get_by_type (info->value.search.
+ specifics.result.meta,
+ EXTRACTOR_METATYPE_GNUNET_ORIGINAL_FILENAME);
+ is_directory =
+ GNUNET_FS_meta_data_test_for_directory (info->value.search.
+ specifics.result.meta);
+ if (filename != NULL)
+ {
+ GNUNET_DISK_filename_canonicalize (filename);
+ if (GNUNET_YES == is_directory)
+ printf ("gnunet-download -o \"%s%s\" -R %s\n", filename, GNUNET_FS_DIRECTORY_EXT, uri);
+ else
+ printf ("gnunet-download -o \"%s\" %s\n", filename, uri);
+ }
+ else if (GNUNET_YES == is_directory)
+ printf ("gnunet-download -o \"collection%s\" -R %s\n", GNUNET_FS_DIRECTORY_EXT, uri);
+ else
+ printf ("gnunet-download %s\n", uri);
+ if (verbose)
+ GNUNET_CONTAINER_meta_data_iterate (info->value.search.specifics.
+ result.meta, &item_printer, NULL);
+ printf ("\n");
+ fflush (stdout);
+ GNUNET_free_non_null (filename);
+ GNUNET_free (uri);
+ results++;
+ if ((results_limit > 0) && (results >= results_limit))
+ GNUNET_SCHEDULER_shutdown ();
+ break;
+ case GNUNET_FS_STATUS_SEARCH_UPDATE:
+ break;
+ case GNUNET_FS_STATUS_SEARCH_RESULT_STOPPED:
+ /* ignore */
+ break;
+ case GNUNET_FS_STATUS_SEARCH_ERROR:
+ FPRINTF (stderr, _("Error searching: %s.\n"),
+ info->value.search.specifics.error.message);
+ GNUNET_SCHEDULER_shutdown ();
+ break;
+ case GNUNET_FS_STATUS_SEARCH_STOPPED:
+ GNUNET_SCHEDULER_add_now (&clean_task, NULL);
+ break;
+ default:
+ FPRINTF (stderr, _("Unexpected status: %d\n"), info->status);
+ break;
+ }
return NULL;
}
+static void
+shutdown_task (void *cls)
+{
+ if (sc != NULL)
+ {
+ GNUNET_FS_search_stop (sc);
+ sc = NULL;
+ }
+}
+
+
+static void
+timeout_task (void *cls)
+{
+ tt = NULL;
+ GNUNET_SCHEDULER_shutdown ();
+}
+
+
/**
* Main function that will be run by the scheduler.
*
* @param cls closure
- * @param sched the scheduler to use
* @param args remaining command-line arguments
* @param cfgfile name of the configuration file used (for saving, can be NULL!)
- * @param cfg configuration
+ * @param c configuration
*/
static void
-run (void *cls,
- struct GNUNET_SCHEDULER_Handle *sched,
- char *const *args,
- const char *cfgfile,
+run (void *cls, char *const *args, const char *cfgfile,
const struct GNUNET_CONFIGURATION_Handle *c)
{
- /* FIXME: check arguments */
+ struct GNUNET_FS_Uri *uri;
+ unsigned int argc;
+ enum GNUNET_FS_SearchOptions options;
+
+ argc = 0;
+ while (NULL != args[argc])
+ argc++;
+ uri = GNUNET_FS_uri_ksk_create_from_args (argc, (const char **) args);
+ if (NULL == uri)
+ {
+ FPRINTF (stderr, "%s", _("Could not create keyword URI from arguments.\n"));
+ ret = 1;
+ return;
+ }
cfg = c;
- ctx = GNUNET_FS_start (sched,
- cfg,
- "gnunet-search",
- &progress_cb,
- NULL);
+ ctx =
+ GNUNET_FS_start (cfg, "gnunet-search", &progress_cb, NULL,
+ GNUNET_FS_FLAGS_NONE, GNUNET_FS_OPTIONS_END);
if (NULL == ctx)
- {
- fprintf (stderr,
- _("Could not initialize `%s' subsystem.\n"),
- "FS");
- ret = 1;
- return;
- }
- start_time = GNUNET_TIME_absolute_get ();
- // FIXME: start search
+ {
+ FPRINTF (stderr, _("Could not initialize `%s' subsystem.\n"), "FS");
+ GNUNET_FS_uri_destroy (uri);
+ ret = 1;
+ return;
+ }
+ if (output_filename != NULL)
+ db = GNUNET_FS_directory_builder_create (NULL);
+ options = GNUNET_FS_SEARCH_OPTION_NONE;
+ if (local_only)
+ options |= GNUNET_FS_SEARCH_OPTION_LOOPBACK_ONLY;
+ sc = GNUNET_FS_search_start (ctx, uri, anonymity, options, NULL);
+ GNUNET_FS_uri_destroy (uri);
+ if (NULL == sc)
+ {
+ FPRINTF (stderr, "%s", _("Could not start searching.\n"));
+ GNUNET_FS_stop (ctx);
+ ret = 1;
+ return;
+ }
+ if (0 != timeout.rel_value_us)
+ tt = GNUNET_SCHEDULER_add_delayed (timeout,
+ &timeout_task,
+ NULL);
+ GNUNET_SCHEDULER_add_shutdown (&shutdown_task,
+ NULL);
}
-/**
- * gnunet-search command line options
- */
-static struct GNUNET_GETOPT_CommandLineOption options[] = {
- {'a', "anonymity", "LEVEL",
- gettext_noop ("set the desired LEVEL of receiver-anonymity"),
- 1, &GNUNET_GETOPT_set_uint, &anonymity},
- // FIXME: options!
- GNUNET_GETOPT_OPTION_END
-};
-
-
/**
* The main function to search GNUnet.
*
int
main (int argc, char *const *argv)
{
- return (GNUNET_OK ==
- GNUNET_PROGRAM_run (argc,
- argv,
- "gnunet-search",
- gettext_noop
- ("Search GNUnet."),
- options, &run, NULL)) ? ret : 1;
+ 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},
+ {'n', "no-network", NULL,
+ gettext_noop ("only search the local peer (no P2P network search)"),
+ 0, &GNUNET_GETOPT_set_one, &local_only},
+ {'o', "output", "PREFIX",
+ gettext_noop ("write search results to file starting with PREFIX"),
+ 1, &GNUNET_GETOPT_set_string, &output_filename},
+ {'t', "timeout", "DELAY",
+ gettext_noop ("automatically terminate search after DELAY"),
+ 1, &GNUNET_GETOPT_set_relative_time, &timeout},
+ {'V', "verbose", NULL,
+ gettext_noop ("be verbose (print progress information)"),
+ 0, &GNUNET_GETOPT_set_one, &verbose},
+ {'N', "results", "VALUE",
+ gettext_noop
+ ("automatically terminate search after VALUE results are found"),
+ 1, &GNUNET_GETOPT_set_uint, &results_limit},
+ GNUNET_GETOPT_OPTION_END
+ };
+
+ if (GNUNET_OK != GNUNET_STRINGS_get_utf8_args (argc, argv, &argc, &argv))
+ return 2;
+
+ ret = (GNUNET_OK ==
+ GNUNET_PROGRAM_run (argc, argv, "gnunet-search [OPTIONS] KEYWORD",
+ gettext_noop
+ ("Search GNUnet for files that were published on GNUnet"),
+ options, &run, NULL)) ? ret : 1;
+ GNUNET_free ((void*) argv);
+ return ret;
}
/* end of gnunet-search.c */
-