2 This file is part of GNUnet.
3 (C) 2012, 2013 Christian Grothoff
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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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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 General Public License for more details.
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22 * @file regex/gnunet-daemon-regexprofiler.c
23 * @brief daemon that uses mesh to announce a regular expression. Used in
24 * conjunction with gnunet-regex-profiler to announce regexes on serveral peers
25 * without the need to explicitly connect to the mesh service running on the
26 * peer from within the profiler.
27 * @author Maximilian Szengel
28 * @author Bartlomiej Polot
31 #include "gnunet_util_lib.h"
32 #include "regex_internal_lib.h"
33 #include "regex_test_lib.h"
34 #include "gnunet_dht_service.h"
35 #include "gnunet_statistics_service.h"
38 * Return value from 'main'.
40 static int global_ret;
43 * Configuration we use.
45 static const struct GNUNET_CONFIGURATION_Handle *cfg;
48 * Handle to the statistics service.
50 static struct GNUNET_STATISTICS_Handle *stats_handle;
55 static struct GNUNET_DHT_Handle *dht_handle;
58 * Peer's regex announce handle.
60 static struct REGEX_ITERNAL_Announcement *announce_handle;
63 * Periodically reannounce regex.
65 static GNUNET_SCHEDULER_TaskIdentifier reannounce_task;
68 * What's the maximum reannounce period.
70 static struct GNUNET_TIME_Relative reannounce_period_max;
73 * Maximal path compression length for regex announcing.
75 static unsigned long long max_path_compression;
78 * Name of the file containing policies that this peer should announce. One
81 static char * policy_filename;
84 * Prefix to add before every regex we're announcing.
86 static char * regex_prefix;
91 static char *rx_with_pfx;
94 * How many put rounds should we do.
96 static unsigned int rounds = 5;
100 * Task run during shutdown.
106 shutdown_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
108 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "shutting down\n");
110 if (NULL != announce_handle)
112 REGEX_ITERNAL_announce_cancel (announce_handle);
113 announce_handle = NULL;
116 if (NULL != dht_handle)
118 GNUNET_DHT_disconnect (dht_handle);
122 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
123 "Daemon for %s shutting down\n",
129 * Announce a previously announced regex re-using cached data.
131 * @param cls Closure (regex to announce if needed).
132 * @param tc TaskContext.
135 reannounce_regex (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
137 struct GNUNET_PeerIdentity id;
138 struct GNUNET_TIME_Relative random_delay;
141 reannounce_task = GNUNET_SCHEDULER_NO_TASK;
142 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
151 GNUNET_SCHEDULER_shutdown ();
155 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Announcing regex: %s\n", regex);
156 GNUNET_STATISTICS_update (stats_handle, "# regexes announced", 1, GNUNET_NO);
157 if (NULL == announce_handle && NULL != regex)
159 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
160 "First time, creating regex: %s\n",
162 memset (&id, 0, sizeof (struct GNUNET_PeerIdentity));
163 announce_handle = REGEX_ITERNAL_announce (dht_handle,
166 (unsigned int) max_path_compression,
171 GNUNET_assert (NULL != announce_handle);
172 REGEX_ITERNAL_reannounce (announce_handle);
176 GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_MILLISECONDS,
177 GNUNET_CRYPTO_random_u32 (
178 GNUNET_CRYPTO_QUALITY_WEAK,
179 reannounce_period_max.rel_value));
180 reannounce_task = GNUNET_SCHEDULER_add_delayed (random_delay,
181 &reannounce_regex, cls);
186 * Announce the given regular expression using regex and the path compression
187 * length read from config.
189 * @param regex regular expression to announce on this peer's mesh.
192 announce_regex (const char * regex)
196 if (NULL == regex || 0 == strlen (regex))
198 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Cannot announce empty regex\n");
202 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
203 "Daemon for %s starting\n",
205 GNUNET_assert (GNUNET_SCHEDULER_NO_TASK == reannounce_task);
206 copy = GNUNET_strdup (regex);
207 reannounce_task = GNUNET_SCHEDULER_add_now (reannounce_regex, (void *) copy);
212 * Scan through the policy_dir looking for the n-th filename.
214 * @param cls Closure (target number n).
215 * @param filename complete filename (absolute path).
216 * @return GNUNET_OK to continue to iterate,
217 * GNUNET_NO to stop when found
220 scan (void *cls, const char *filename)
227 policy_filename = GNUNET_strdup (filename);
236 * @brief Main function that will be run by the scheduler.
239 * @param args remaining command-line arguments
240 * @param cfgfile name of the configuration file used (for saving, can be NULL!)
241 * @param cfg_ configuration
244 run (void *cls, char *const *args GNUNET_UNUSED,
245 const char *cfgfile GNUNET_UNUSED,
246 const struct GNUNET_CONFIGURATION_Handle *cfg_)
251 long long unsigned int peer_id;
256 GNUNET_CONFIGURATION_get_value_number (cfg, "REGEXPROFILER",
257 "MAX_PATH_COMPRESSION",
258 &max_path_compression))
260 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
262 ("%s service is lacking key configuration settings (%s). Exiting.\n"),
263 "regexprofiler", "max_path_compression");
264 global_ret = GNUNET_SYSERR;
265 GNUNET_SCHEDULER_shutdown ();
269 GNUNET_CONFIGURATION_get_value_string (cfg, "REGEXPROFILER",
270 "POLICY_DIR", &policy_dir))
272 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
274 ("%s service is lacking key configuration settings (%s). Exiting.\n"),
275 "regexprofiler", "policy_dir");
276 global_ret = GNUNET_SYSERR;
277 GNUNET_SCHEDULER_shutdown ();
281 GNUNET_CONFIGURATION_get_value_number (cfg, "TESTBED",
284 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
286 ("%s service is lacking key configuration settings (%s). Exiting.\n"),
287 "regexprofiler", "policy_file");
288 global_ret = GNUNET_SYSERR;
289 GNUNET_SCHEDULER_shutdown ();
294 GNUNET_CONFIGURATION_get_value_string (cfg, "REGEXPROFILER",
295 "REGEX_PREFIX", ®ex_prefix))
297 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
299 ("%s service is lacking key configuration settings (%s). Exiting.\n"),
300 "regexprofiler", "regex_prefix");
301 global_ret = GNUNET_SYSERR;
302 GNUNET_SCHEDULER_shutdown ();
307 GNUNET_CONFIGURATION_get_value_time (cfg, "REGEXPROFILER",
308 "REANNOUNCE_PERIOD_MAX",
309 &reannounce_period_max))
311 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
312 "reannounce_period_max not given. Using 10 minutes.\n");
313 reannounce_period_max =
314 GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_MINUTES, 10);
317 stats_handle = GNUNET_STATISTICS_create ("regexprofiler", cfg);
319 dht_handle = GNUNET_DHT_connect (cfg, 1);
321 if (NULL == dht_handle)
323 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
324 "Could not acquire dht handle. Exiting.\n");
325 global_ret = GNUNET_SYSERR;
326 GNUNET_SCHEDULER_shutdown ();
330 /* Read regexes from policy files */
331 GNUNET_assert (-1 != GNUNET_DISK_directory_scan (policy_dir, &scan,
332 (void *) (long) peer_id));
333 if (NULL == (components = REGEX_ITERNAL_read_from_file (policy_filename)))
335 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
336 "Policy file %s contains no policies. Exiting.\n",
338 global_ret = GNUNET_SYSERR;
339 GNUNET_SCHEDULER_shutdown ();
342 regex = REGEX_ITERNAL_combine (components);
343 REGEX_ITERNAL_free_from_file (components);
345 /* Announcing regexes from policy_filename */
346 GNUNET_asprintf (&rx_with_pfx, "%s(%s)(0|1)*", regex_prefix, regex);
347 announce_regex (rx_with_pfx);
349 GNUNET_free (rx_with_pfx);
351 /* Scheduled the task to clean up when shutdown is called */
352 GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL, &shutdown_task,
358 * The main function of the regexprofiler service.
360 * @param argc number of arguments from the command line
361 * @param argv command line arguments
362 * @return 0 ok, 1 on error
365 main (int argc, char *const *argv)
367 static const struct GNUNET_GETOPT_CommandLineOption options[] = {
368 GNUNET_GETOPT_OPTION_END
371 if (GNUNET_OK != GNUNET_STRINGS_get_utf8_args (argc, argv, &argc, &argv))
374 GNUNET_PROGRAM_run (argc, argv, "regexprofiler",
376 ("Daemon to announce regular expressions for the peer using mesh."),
377 options, &run, NULL)) ? global_ret : 1;
385 * MINIMIZE heap size (way below 128k) since this process doesn't need much.
387 void __attribute__ ((constructor)) GNUNET_ARM_memory_init ()
389 mallopt (M_TRIM_THRESHOLD, 4 * 1024);
390 mallopt (M_TOP_PAD, 1 * 1024);
396 /* end of gnunet-daemon-regexprofiler.c */