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-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_SCHEDULER_Handle *sched;
37 static struct GNUNET_FS_Handle *ctx;
39 static struct GNUNET_FS_SearchContext *sc;
41 static char *output_filename;
43 static struct GNUNET_FS_DirectoryBuilder *db;
45 static unsigned int anonymity = 1;
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 printf ("\t%20s: %s\n",
79 dgettext (LIBEXTRACTOR_GETTEXT_DOMAIN,
80 EXTRACTOR_metatype_to_string (type)),
87 clean_task (void *cls,
88 const struct GNUNET_SCHEDULER_TaskContext *tc)
95 if (output_filename == NULL)
98 GNUNET_FS_directory_builder_finish (db,
103 GNUNET_free (output_filename);
107 GNUNET_DISK_fn_write (output_filename,
110 GNUNET_DISK_PERM_USER_READ | GNUNET_DISK_PERM_USER_WRITE))
113 _("Failed to write directory with search results to `%s'\n"),
116 GNUNET_free_non_null (ddata);
117 GNUNET_free (output_filename);
122 * Called by FS client to give information about the progress of an
126 * @param info details about the event, specifying the event type
127 * and various bits about the event
128 * @return client-context (for the next progress call
129 * for this operation; should be set to NULL for
130 * SUSPEND and STOPPED events). The value returned
131 * will be passed to future callbacks in the respective
132 * field in the GNUNET_FS_ProgressInfo struct.
135 progress_cb (void *cls,
136 const struct GNUNET_FS_ProgressInfo *info)
138 static unsigned int cnt;
143 switch (info->status)
145 case GNUNET_FS_STATUS_SEARCH_START:
147 case GNUNET_FS_STATUS_SEARCH_RESULT:
149 GNUNET_FS_directory_builder_add (db,
150 info->value.search.specifics.result.uri,
151 info->value.search.specifics.result.meta,
153 uri = GNUNET_FS_uri_to_string (info->value.search.specifics.result.uri);
154 printf ("#%u:\n", cnt++);
156 GNUNET_CONTAINER_meta_data_get_by_type (info->value.search.specifics.result.meta,
157 EXTRACTOR_METATYPE_FILENAME);
158 if (filename != NULL)
160 while (NULL != (dotdot = strstr (filename, "..")))
161 dotdot[0] = dotdot[1] = '_';
162 printf ("gnunet-download -o \"%s\" %s\n",
167 printf ("gnunet-download %s\n", uri);
169 GNUNET_CONTAINER_meta_data_iterate (info->value.search.specifics.result.meta,
174 GNUNET_free_non_null (filename);
177 case GNUNET_FS_STATUS_SEARCH_UPDATE:
179 case GNUNET_FS_STATUS_SEARCH_RESULT_STOPPED:
182 case GNUNET_FS_STATUS_SEARCH_ERROR:
184 _("Error searching: %s.\n"),
185 info->value.search.specifics.error.message);
186 GNUNET_SCHEDULER_shutdown (sched);
188 case GNUNET_FS_STATUS_SEARCH_STOPPED:
189 GNUNET_SCHEDULER_add_continuation (sched,
192 GNUNET_SCHEDULER_REASON_PREREQ_DONE);
196 _("Unexpected status: %d\n"),
205 shutdown_task (void *cls,
206 const struct GNUNET_SCHEDULER_TaskContext *tc)
210 GNUNET_FS_search_stop (sc);
217 * Main function that will be run by the scheduler.
220 * @param s the scheduler to use
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
227 struct GNUNET_SCHEDULER_Handle *s,
230 const struct GNUNET_CONFIGURATION_Handle *c)
232 struct GNUNET_FS_Uri *uri;
237 while (NULL != args[argc])
239 uri = GNUNET_FS_uri_ksk_create_from_args (argc,
240 (const char **) args);
244 _("Could not create keyword URI from arguments.\n"));
246 GNUNET_FS_uri_destroy (uri);
250 ctx = GNUNET_FS_start (sched,
255 GNUNET_FS_FLAGS_NONE,
256 GNUNET_FS_OPTIONS_END);
260 _("Could not initialize `%s' subsystem.\n"),
262 GNUNET_FS_uri_destroy (uri);
263 GNUNET_FS_stop (ctx);
267 if (output_filename != NULL)
268 db = GNUNET_FS_directory_builder_create (NULL);
269 sc = GNUNET_FS_search_start (ctx,
273 GNUNET_FS_uri_destroy (uri);
277 _("Could not start searching.\n"));
278 GNUNET_FS_stop (ctx);
282 GNUNET_SCHEDULER_add_delayed (sched,
283 GNUNET_TIME_UNIT_FOREVER_REL,
290 * gnunet-search command line options
292 static struct GNUNET_GETOPT_CommandLineOption options[] = {
293 {'a', "anonymity", "LEVEL",
294 gettext_noop ("set the desired LEVEL of receiver-anonymity"),
295 1, &GNUNET_GETOPT_set_uint, &anonymity},
296 {'o', "output", "PREFIX",
298 ("write search results to file starting with PREFIX"),
299 1, &GNUNET_GETOPT_set_string, &output_filename},
300 {'V', "verbose", NULL,
301 gettext_noop ("be verbose (print progress information)"),
302 0, &GNUNET_GETOPT_set_one, &verbose},
303 GNUNET_GETOPT_OPTION_END
308 * The main function to search GNUnet.
310 * @param argc number of arguments from the command line
311 * @param argv command line arguments
312 * @return 0 ok, 1 on error
315 main (int argc, char *const *argv)
318 GNUNET_PROGRAM_run (argc,
323 options, &run, NULL)) ? ret : 1;
326 /* end of gnunet-search.c */