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
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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
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17 Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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21 * @file fs/gnunet-search.c
22 * @brief searching 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"
33 static const struct GNUNET_CONFIGURATION_Handle *cfg;
35 static struct GNUNET_FS_Handle *ctx;
37 static struct GNUNET_FS_SearchContext *sc;
39 static char *output_filename;
41 static struct GNUNET_FS_DirectoryBuilder *db;
43 static unsigned int anonymity = 1;
47 static int local_only;
50 * Type of a function that libextractor calls for each
51 * meta data item found.
53 * @param cls closure (user-defined, unused)
54 * @param plugin_name name of the plugin that produced this value;
55 * special values can be used (i.e. '<zlib>' for zlib being
56 * used in the main libextractor library and yielding
58 * @param type libextractor-type describing the meta data
59 * @param format basic format information about data
60 * @param data_mime_type mime-type of data (not of the original file);
61 * can be NULL (if mime-type is not known)
62 * @param data actual meta-data found
63 * @param data_size number of bytes in data
64 * @return 0 to continue extracting, 1 to abort
67 item_printer (void *cls,
68 const char *plugin_name,
69 enum EXTRACTOR_MetaType type,
70 enum EXTRACTOR_MetaFormat format,
71 const char *data_mime_type,
75 if ( (format != EXTRACTOR_METAFORMAT_UTF8) &&
76 (format != EXTRACTOR_METAFORMAT_C_STRING) )
78 if (type == EXTRACTOR_METATYPE_GNUNET_ORIGINAL_FILENAME)
80 printf ("\t%20s: %s\n",
81 dgettext (LIBEXTRACTOR_GETTEXT_DOMAIN,
82 EXTRACTOR_metatype_to_string (type)),
89 clean_task (void *cls,
90 const struct GNUNET_SCHEDULER_TaskContext *tc)
97 if (output_filename == NULL)
100 GNUNET_FS_directory_builder_finish (db,
105 GNUNET_free (output_filename);
109 GNUNET_DISK_fn_write (output_filename,
112 GNUNET_DISK_PERM_USER_READ | GNUNET_DISK_PERM_USER_WRITE))
115 _("Failed to write directory with search results to `%s'\n"),
118 GNUNET_free_non_null (ddata);
119 GNUNET_free (output_filename);
124 * Called by FS client to give information about the progress of an
128 * @param info details about the event, specifying the event type
129 * and various bits about the event
130 * @return client-context (for the next progress call
131 * for this operation; should be set to NULL for
132 * SUSPEND and STOPPED events). The value returned
133 * will be passed to future callbacks in the respective
134 * field in the GNUNET_FS_ProgressInfo struct.
137 progress_cb (void *cls,
138 const struct GNUNET_FS_ProgressInfo *info)
140 static unsigned int cnt;
145 switch (info->status)
147 case GNUNET_FS_STATUS_SEARCH_START:
149 case GNUNET_FS_STATUS_SEARCH_RESULT:
151 GNUNET_FS_directory_builder_add (db,
152 info->value.search.specifics.result.uri,
153 info->value.search.specifics.result.meta,
155 uri = GNUNET_FS_uri_to_string (info->value.search.specifics.result.uri);
156 printf ("#%u:\n", cnt++);
158 GNUNET_CONTAINER_meta_data_get_by_type (info->value.search.specifics.result.meta,
159 EXTRACTOR_METATYPE_GNUNET_ORIGINAL_FILENAME);
160 if (filename != NULL)
162 while (NULL != (dotdot = strstr (filename, "..")))
163 dotdot[0] = dotdot[1] = '_';
164 printf ("gnunet-download -o \"%s\" %s\n",
169 printf ("gnunet-download %s\n", uri);
171 GNUNET_CONTAINER_meta_data_iterate (info->value.search.specifics.result.meta,
176 GNUNET_free_non_null (filename);
179 case GNUNET_FS_STATUS_SEARCH_UPDATE:
181 case GNUNET_FS_STATUS_SEARCH_RESULT_STOPPED:
184 case GNUNET_FS_STATUS_SEARCH_ERROR:
186 _("Error searching: %s.\n"),
187 info->value.search.specifics.error.message);
188 GNUNET_SCHEDULER_shutdown ();
190 case GNUNET_FS_STATUS_SEARCH_STOPPED:
191 GNUNET_SCHEDULER_add_continuation (&clean_task,
193 GNUNET_SCHEDULER_REASON_PREREQ_DONE);
197 _("Unexpected status: %d\n"),
206 shutdown_task (void *cls,
207 const struct GNUNET_SCHEDULER_TaskContext *tc)
211 GNUNET_FS_search_stop (sc);
218 * Main function that will be run by the scheduler.
221 * @param args remaining command-line arguments
222 * @param cfgfile name of the configuration file used (for saving, can be NULL!)
223 * @param c configuration
229 const struct GNUNET_CONFIGURATION_Handle *c)
231 struct GNUNET_FS_Uri *uri;
233 enum GNUNET_FS_SearchOptions options;
236 while (NULL != args[argc])
238 uri = GNUNET_FS_uri_ksk_create_from_args (argc,
239 (const char **) args);
243 _("Could not create keyword URI from arguments.\n"));
245 GNUNET_FS_uri_destroy (uri);
249 ctx = GNUNET_FS_start (cfg,
253 GNUNET_FS_FLAGS_NONE,
254 GNUNET_FS_OPTIONS_END);
258 _("Could not initialize `%s' subsystem.\n"),
260 GNUNET_FS_uri_destroy (uri);
264 if (output_filename != NULL)
265 db = GNUNET_FS_directory_builder_create (NULL);
266 options = GNUNET_FS_SEARCH_OPTION_NONE;
268 options |= GNUNET_FS_SEARCH_OPTION_LOOPBACK_ONLY;
269 sc = GNUNET_FS_search_start (ctx,
274 GNUNET_FS_uri_destroy (uri);
278 _("Could not start searching.\n"));
279 GNUNET_FS_stop (ctx);
283 GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL,
290 * The main function to search 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)
299 static const struct GNUNET_GETOPT_CommandLineOption options[] = {
300 {'a', "anonymity", "LEVEL",
301 gettext_noop ("set the desired LEVEL of receiver-anonymity"),
302 1, &GNUNET_GETOPT_set_uint, &anonymity},
303 {'n', "no-network", NULL,
304 gettext_noop ("only search the local peer (no P2P network search)"),
305 0, &GNUNET_GETOPT_set_one, &local_only},
306 {'o', "output", "PREFIX",
308 ("write search results to file starting with PREFIX"),
309 1, &GNUNET_GETOPT_set_string, &output_filename},
310 {'V', "verbose", NULL,
311 gettext_noop ("be verbose (print progress information)"),
312 0, &GNUNET_GETOPT_set_one, &verbose},
313 GNUNET_GETOPT_OPTION_END
316 GNUNET_PROGRAM_run (argc,
318 "gnunet-search [OPTIONS] KEYWORD",
320 ("Search GNUnet for files that were published on GNUnet"),
321 options, &run, NULL)) ? ret : 1;
324 /* end of gnunet-search.c */