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[GNUnet-SVN] r37335 - gnunet/src/regex
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From: |
gnunet |
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Subject: |
[GNUnet-SVN] r37335 - gnunet/src/regex |
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Date: |
Thu, 23 Jun 2016 19:48:40 +0200 |
Author: grothoff
Date: 2016-06-23 19:48:40 +0200 (Thu, 23 Jun 2016)
New Revision: 37335
Added:
gnunet/src/regex/regex_api_announce.c
gnunet/src/regex/regex_api_search.c
Removed:
gnunet/src/regex/regex_api.c
Modified:
gnunet/src/regex/Makefile.am
Log:
migrate first half of regex API to MQ lib
Modified: gnunet/src/regex/Makefile.am
===================================================================
--- gnunet/src/regex/Makefile.am 2016-06-23 17:31:20 UTC (rev 37334)
+++ gnunet/src/regex/Makefile.am 2016-06-23 17:48:40 UTC (rev 37335)
@@ -62,7 +62,9 @@
libgnunetregex_la_SOURCES = \
- regex_api.c regex_ipc.h
+ regex_api_announce.c \
+ regex_api_search.c \
+ regex_ipc.h
libgnunetregex_la_LIBADD = \
$(top_builddir)/src/util/libgnunetutil.la
libgnunetregex_la_LDFLAGS = \
Deleted: gnunet/src/regex/regex_api.c
===================================================================
--- gnunet/src/regex/regex_api.c 2016-06-23 17:31:20 UTC (rev 37334)
+++ gnunet/src/regex/regex_api.c 2016-06-23 17:48:40 UTC (rev 37335)
@@ -1,350 +0,0 @@
-/*
- This file is part of GNUnet
- Copyright (C) 2012, 2013 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 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., 51 Franklin Street, Fifth Floor,
- Boston, MA 02110-1301, USA.
-*/
-/**
- * @file regex/regex_api.c
- * @brief access regex service to advertise capabilities via regex and discover
- * respective peers using matching strings
- * @author Maximilian Szengel
- * @author Christian Grothoff
- */
-#include "platform.h"
-#include "gnunet_protocols.h"
-#include "gnunet_util_lib.h"
-#include "gnunet_regex_service.h"
-#include "regex_ipc.h"
-
-#define LOG(kind,...) GNUNET_log_from (kind, "regex-api",__VA_ARGS__)
-
-/**
- * Handle to store cached data about a regex announce.
- */
-struct GNUNET_REGEX_Announcement
-{
- /**
- * Connection to the regex service.
- */
- struct GNUNET_CLIENT_Connection *client;
-
- /**
- * Our configuration.
- */
- const struct GNUNET_CONFIGURATION_Handle *cfg;
-
- /**
- * Message we're sending to the service.
- */
- struct AnnounceMessage msg;
-};
-
-
-/**
- * We got a response (!?) or disconnect after asking regex
- * to do the announcement. Retry.
- *
- * @param cls the 'struct GNUNET_REGEX_Announcement' to retry
- * @param msg NULL on disconnect
- */
-static void
-handle_a_reconnect (void *cls,
- const struct GNUNET_MessageHeader *msg);
-
-
-/**
- * Try sending the announcement request to regex. On
- * errors (i.e. regex died), try again.
- *
- * @param a the announcement to retry
- */
-static void
-retry_announcement (struct GNUNET_REGEX_Announcement *a)
-{
- GNUNET_assert (NULL != a->client);
- GNUNET_assert (GNUNET_OK ==
- GNUNET_CLIENT_transmit_and_get_response (a->client,
- &a->msg.header,
-
GNUNET_TIME_UNIT_FOREVER_REL,
- GNUNET_YES,
- &handle_a_reconnect,
- a));
-}
-
-
-/**
- * We got a response (!?) or disconnect after asking regex
- * to do the announcement. Retry.
- *
- * @param cls the 'struct GNUNET_REGEX_Announcement' to retry
- * @param msg NULL on disconnect
- */
-static void
-handle_a_reconnect (void *cls,
- const struct GNUNET_MessageHeader *msg)
-{
- struct GNUNET_REGEX_Announcement *a = cls;
-
- GNUNET_CLIENT_disconnect (a->client);
- a->client = GNUNET_CLIENT_connect ("regex", a->cfg);
- retry_announcement (a);
-}
-
-
-/**
- * Announce the given peer under the given regular expression.
- *
- * @param cfg configuration to use
- * @param regex Regular expression to announce.
- * @param refresh_delay after what delay should the announcement be repeated?
- * @param compression How many characters per edge can we squeeze?
- * @return Handle to reuse o free cached resources.
- * Must be freed by calling #GNUNET_REGEX_announce_cancel().
- */
-struct GNUNET_REGEX_Announcement *
-GNUNET_REGEX_announce (const struct GNUNET_CONFIGURATION_Handle *cfg,
- const char *regex,
- struct GNUNET_TIME_Relative refresh_delay,
- uint16_t compression)
-{
- struct GNUNET_REGEX_Announcement *a;
- size_t slen;
-
- slen = strlen (regex) + 1;
- if (slen + sizeof (struct AnnounceMessage) >= GNUNET_SERVER_MAX_MESSAGE_SIZE)
- {
- GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
- _("Regex `%s' is too long!\n"),
- regex);
- GNUNET_break (0);
- return NULL;
- }
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Starting REGEX announcement %s\n",
- regex);
- a = GNUNET_malloc (sizeof (struct GNUNET_REGEX_Announcement) + slen);
- a->cfg = cfg;
- a->client = GNUNET_CLIENT_connect ("regex", cfg);
- if (NULL == a->client)
- {
- GNUNET_free (a);
- return NULL;
- }
- a->msg.header.type = htons (GNUNET_MESSAGE_TYPE_REGEX_ANNOUNCE);
- a->msg.header.size = htons (slen + sizeof (struct AnnounceMessage));
- a->msg.compression = htons (compression);
- a->msg.reserved = htons (0);
- a->msg.refresh_delay = GNUNET_TIME_relative_hton (refresh_delay);
- memcpy (&a[1], regex, slen);
- retry_announcement (a);
- return a;
-}
-
-
-/**
- * Stop announcing the regex specified by the given handle.
- *
- * @param a handle returned by a previous GNUNET_REGEX_announce call.
- */
-void
-GNUNET_REGEX_announce_cancel (struct GNUNET_REGEX_Announcement *a)
-{
- GNUNET_CLIENT_disconnect (a->client);
- GNUNET_free (a);
-}
-
-
-/**
- * Handle to store data about a regex search.
- */
-struct GNUNET_REGEX_Search
-{
- /**
- * Connection to the regex service.
- */
- struct GNUNET_CLIENT_Connection *client;
-
- /**
- * Our configuration.
- */
- const struct GNUNET_CONFIGURATION_Handle *cfg;
-
- /**
- * Function to call with results.
- */
- GNUNET_REGEX_Found callback;
-
- /**
- * Closure for @e callback.
- */
- void *callback_cls;
-
- /**
- * Search message to transmit to the service.
- */
- struct RegexSearchMessage *msg;
-};
-
-
-/**
- * We got a response or disconnect after asking regex
- * to do the search. Handle it.
- *
- * @param cls the `struct GNUNET_REGEX_Search` to retry
- * @param msg NULL on disconnect
- */
-static void
-handle_search_response (void *cls,
- const struct GNUNET_MessageHeader *msg);
-
-
-/**
- * Try sending the search request to regex. On
- * errors (i.e. regex died), try again.
- *
- * @param s the search to retry
- */
-static void
-retry_search (struct GNUNET_REGEX_Search *s)
-{
- GNUNET_assert (NULL != s->client);
- GNUNET_assert (GNUNET_OK ==
- GNUNET_CLIENT_transmit_and_get_response (s->client,
- &s->msg->header,
-
GNUNET_TIME_UNIT_FOREVER_REL,
- GNUNET_YES,
-
&handle_search_response,
- s));
-}
-
-
-/**
- * We got a response or disconnect after asking regex
- * to do the search. Handle it.
- *
- * @param cls the `struct GNUNET_REGEX_Search` to handle reply for
- * @param msg NULL on disconnect, otherwise presumably a response
- */
-static void
-handle_search_response (void *cls,
- const struct GNUNET_MessageHeader *msg)
-{
- struct GNUNET_REGEX_Search *s = cls;
- const struct ResultMessage *result;
- uint16_t size;
- uint16_t gpl;
- uint16_t ppl;
-
- if (NULL == msg)
- {
- GNUNET_CLIENT_disconnect (s->client);
- s->client = GNUNET_CLIENT_connect ("regex", s->cfg);
- retry_search (s);
- return;
- }
- size = ntohs (msg->size);
- if ( (GNUNET_MESSAGE_TYPE_REGEX_RESULT == ntohs (msg->type)) &&
- (size >= sizeof (struct ResultMessage)) )
- {
- result = (const struct ResultMessage *) msg;
- gpl = ntohs (result->get_path_length);
- ppl = ntohs (result->put_path_length);
- if (size == (sizeof (struct ResultMessage) +
- (gpl + ppl) * sizeof (struct GNUNET_PeerIdentity)))
- {
- const struct GNUNET_PeerIdentity *pid;
-
- GNUNET_CLIENT_receive (s->client,
- &handle_search_response, s,
- GNUNET_TIME_UNIT_FOREVER_REL);
- pid = &result->id;
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Got regex result %s\n",
- GNUNET_i2s (pid));
- s->callback (s->callback_cls,
- pid,
- &pid[1], gpl,
- &pid[1 + gpl], ppl);
- return;
- }
- }
- GNUNET_break (0);
- GNUNET_CLIENT_disconnect (s->client);
- s->client = GNUNET_CLIENT_connect ("regex", s->cfg);
- retry_search (s);
-}
-
-
-/**
- * Search for a peer offering a regex matching certain string in the DHT.
- * The search runs until #GNUNET_REGEX_search_cancel() is called, even if
results
- * are returned.
- *
- * @param cfg configuration to use
- * @param string String to match against the regexes in the DHT.
- * @param callback Callback for found peers.
- * @param callback_cls Closure for @c callback.
- * @return Handle to stop search and free resources.
- * Must be freed by calling #GNUNET_REGEX_search_cancel().
- */
-struct GNUNET_REGEX_Search *
-GNUNET_REGEX_search (const struct GNUNET_CONFIGURATION_Handle *cfg,
- const char *string,
- GNUNET_REGEX_Found callback,
- void *callback_cls)
-{
- struct GNUNET_REGEX_Search *s;
- size_t slen;
-
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Starting regex search for %s\n",
- string);
- slen = strlen (string) + 1;
- s = GNUNET_new (struct GNUNET_REGEX_Search);
- s->cfg = cfg;
- s->client = GNUNET_CLIENT_connect ("regex", cfg);
- if (NULL == s->client)
- {
- GNUNET_free (s);
- return NULL;
- }
- s->callback = callback;
- s->callback_cls = callback_cls;
- s->msg = GNUNET_malloc (sizeof (struct RegexSearchMessage) + slen);
- s->msg->header.type = htons (GNUNET_MESSAGE_TYPE_REGEX_SEARCH);
- s->msg->header.size = htons (sizeof (struct RegexSearchMessage) + slen);
- memcpy (&s->msg[1], string, slen);
- retry_search (s);
- return s;
-}
-
-
-/**
- * Stop search and free all data used by a #GNUNET_REGEX_search() call.
- *
- * @param s Handle returned by a previous #GNUNET_REGEX_search() call.
- */
-void
-GNUNET_REGEX_search_cancel (struct GNUNET_REGEX_Search *s)
-{
- GNUNET_CLIENT_disconnect (s->client);
- GNUNET_free (s->msg);
- GNUNET_free (s);
-}
-
-
-/* end of regex_api.c */
Added: gnunet/src/regex/regex_api_announce.c
===================================================================
--- gnunet/src/regex/regex_api_announce.c (rev 0)
+++ gnunet/src/regex/regex_api_announce.c 2016-06-23 17:48:40 UTC (rev
37335)
@@ -0,0 +1,186 @@
+/*
+ This file is part of GNUnet
+ Copyright (C) 2012, 2013, 2016 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 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., 51 Franklin Street, Fifth Floor,
+ Boston, MA 02110-1301, USA.
+*/
+/**
+ * @file regex/regex_api_announce.c
+ * @brief access regex service to advertise capabilities via regex
+ * @author Maximilian Szengel
+ * @author Christian Grothoff
+ */
+#include "platform.h"
+#include "gnunet_protocols.h"
+#include "gnunet_util_lib.h"
+#include "gnunet_regex_service.h"
+#include "regex_ipc.h"
+
+#define LOG(kind,...) GNUNET_log_from (kind, "regex-api",__VA_ARGS__)
+
+/**
+ * Handle to store cached data about a regex announce.
+ */
+struct GNUNET_REGEX_Announcement
+{
+ /**
+ * Connection to the regex service.
+ */
+ struct GNUNET_MQ_Handle *mq;
+
+ /**
+ * Our configuration.
+ */
+ const struct GNUNET_CONFIGURATION_Handle *cfg;
+
+ /**
+ * Message we're sending to the service.
+ */
+ char *regex;
+
+ /**
+ * Frequency of announcements.
+ */
+ struct GNUNET_TIME_Relative refresh_delay;
+
+ /**
+ * Number of characters per edge.
+ */
+ uint16_t compression;
+};
+
+
+
+/**
+ * (Re)connect to the REGEX service with the given announcement @a a.
+ *
+ * @param a REGEX to announce.
+ */
+static void
+announce_reconnect (struct GNUNET_REGEX_Announcement *a);
+
+
+/**
+ * We got a disconnect after asking regex to do the announcement.
+ * Retry.
+ *
+ * @param cls the `struct GNUNET_REGEX_Announcement` to retry
+ * @param error error code
+ */
+static void
+announce_mq_error_handler (void *cls,
+ enum GNUNET_MQ_Error error)
+{
+ struct GNUNET_REGEX_Announcement *a = cls;
+
+ GNUNET_MQ_destroy (a->mq);
+ a->mq = NULL;
+ announce_reconnect (a);
+}
+
+
+/**
+ * (Re)connect to the REGEX service with the given announcement @a a.
+ *
+ * @param a REGEX to announce.
+ */
+static void
+announce_reconnect (struct GNUNET_REGEX_Announcement *a)
+{
+ struct GNUNET_MQ_Envelope *env;
+ struct AnnounceMessage *am;
+ size_t slen;
+
+ a->mq = GNUNET_CLIENT_connecT (a->cfg,
+ "regex",
+ NULL,
+ &announce_mq_error_handler,
+ a);
+ if (NULL == a->mq)
+ return;
+ slen = strlen (a->regex) + 1;
+ env = GNUNET_MQ_msg_extra (am,
+ slen,
+ GNUNET_MESSAGE_TYPE_REGEX_ANNOUNCE);
+ am->compression = htons (a->compression);
+ am->reserved = htons (0);
+ am->refresh_delay = GNUNET_TIME_relative_hton (a->refresh_delay);
+ memcpy (&am[1],
+ a->regex,
+ slen);
+ GNUNET_MQ_send (a->mq,
+ env);
+}
+
+
+/**
+ * Announce the given peer under the given regular expression.
+ *
+ * @param cfg configuration to use
+ * @param regex Regular expression to announce.
+ * @param refresh_delay after what delay should the announcement be repeated?
+ * @param compression How many characters per edge can we squeeze?
+ * @return Handle to reuse o free cached resources.
+ * Must be freed by calling #GNUNET_REGEX_announce_cancel().
+ */
+struct GNUNET_REGEX_Announcement *
+GNUNET_REGEX_announce (const struct GNUNET_CONFIGURATION_Handle *cfg,
+ const char *regex,
+ struct GNUNET_TIME_Relative refresh_delay,
+ uint16_t compression)
+{
+ struct GNUNET_REGEX_Announcement *a;
+ size_t slen;
+
+ slen = strlen (regex) + 1;
+ if (slen + sizeof (struct AnnounceMessage) >= GNUNET_SERVER_MAX_MESSAGE_SIZE)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
+ _("Regex `%s' is too long!\n"),
+ regex);
+ GNUNET_break (0);
+ return NULL;
+ }
+ a = GNUNET_new (struct GNUNET_REGEX_Announcement);
+ a->cfg = cfg;
+ a->refresh_delay = refresh_delay;
+ a->compression = compression;
+ a->regex = GNUNET_strdup (regex);
+ announce_reconnect (a);
+ if (NULL == a->mq)
+ {
+ GNUNET_free (a->regex);
+ GNUNET_free (a);
+ return NULL;
+ }
+ return a;
+}
+
+
+/**
+ * Stop announcing the regex specified by the given handle.
+ *
+ * @param a handle returned by a previous #GNUNET_REGEX_announce() call.
+ */
+void
+GNUNET_REGEX_announce_cancel (struct GNUNET_REGEX_Announcement *a)
+{
+ GNUNET_MQ_destroy (a->mq);
+ GNUNET_free (a->regex);
+ GNUNET_free (a);
+}
+
+/* end of regex_api_announce.c */
Copied: gnunet/src/regex/regex_api_search.c (from rev 37334,
gnunet/src/regex/regex_api.c)
===================================================================
--- gnunet/src/regex/regex_api_search.c (rev 0)
+++ gnunet/src/regex/regex_api_search.c 2016-06-23 17:48:40 UTC (rev 37335)
@@ -0,0 +1,215 @@
+/*
+ This file is part of GNUnet
+ Copyright (C) 2012, 2013, 2016 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 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., 51 Franklin Street, Fifth Floor,
+ Boston, MA 02110-1301, USA.
+*/
+/**
+ * @file regex/regex_api_search.c
+ * @brief access regex service to discover
+ * peers using matching strings
+ * @author Maximilian Szengel
+ * @author Christian Grothoff
+ */
+#include "platform.h"
+#include "gnunet_protocols.h"
+#include "gnunet_util_lib.h"
+#include "gnunet_regex_service.h"
+#include "regex_ipc.h"
+
+#define LOG(kind,...) GNUNET_log_from (kind, "regex-api",__VA_ARGS__)
+
+
+/**
+ * Handle to store data about a regex search.
+ */
+struct GNUNET_REGEX_Search
+{
+ /**
+ * Connection to the regex service.
+ */
+ struct GNUNET_CLIENT_Connection *client;
+
+ /**
+ * Our configuration.
+ */
+ const struct GNUNET_CONFIGURATION_Handle *cfg;
+
+ /**
+ * Function to call with results.
+ */
+ GNUNET_REGEX_Found callback;
+
+ /**
+ * Closure for @e callback.
+ */
+ void *callback_cls;
+
+ /**
+ * Search message to transmit to the service.
+ */
+ struct RegexSearchMessage *msg;
+};
+
+
+/**
+ * We got a response or disconnect after asking regex
+ * to do the search. Handle it.
+ *
+ * @param cls the `struct GNUNET_REGEX_Search` to retry
+ * @param msg NULL on disconnect
+ */
+static void
+handle_search_response (void *cls,
+ const struct GNUNET_MessageHeader *msg);
+
+
+/**
+ * Try sending the search request to regex. On
+ * errors (i.e. regex died), try again.
+ *
+ * @param s the search to retry
+ */
+static void
+retry_search (struct GNUNET_REGEX_Search *s)
+{
+ GNUNET_assert (NULL != s->client);
+ GNUNET_assert (GNUNET_OK ==
+ GNUNET_CLIENT_transmit_and_get_response (s->client,
+ &s->msg->header,
+
GNUNET_TIME_UNIT_FOREVER_REL,
+ GNUNET_YES,
+
&handle_search_response,
+ s));
+}
+
+
+/**
+ * We got a response or disconnect after asking regex
+ * to do the search. Handle it.
+ *
+ * @param cls the `struct GNUNET_REGEX_Search` to handle reply for
+ * @param msg NULL on disconnect, otherwise presumably a response
+ */
+static void
+handle_search_response (void *cls,
+ const struct GNUNET_MessageHeader *msg)
+{
+ struct GNUNET_REGEX_Search *s = cls;
+ const struct ResultMessage *result;
+ uint16_t size;
+ uint16_t gpl;
+ uint16_t ppl;
+
+ if (NULL == msg)
+ {
+ GNUNET_CLIENT_disconnect (s->client);
+ s->client = GNUNET_CLIENT_connect ("regex", s->cfg);
+ retry_search (s);
+ return;
+ }
+ size = ntohs (msg->size);
+ if ( (GNUNET_MESSAGE_TYPE_REGEX_RESULT == ntohs (msg->type)) &&
+ (size >= sizeof (struct ResultMessage)) )
+ {
+ result = (const struct ResultMessage *) msg;
+ gpl = ntohs (result->get_path_length);
+ ppl = ntohs (result->put_path_length);
+ if (size == (sizeof (struct ResultMessage) +
+ (gpl + ppl) * sizeof (struct GNUNET_PeerIdentity)))
+ {
+ const struct GNUNET_PeerIdentity *pid;
+
+ GNUNET_CLIENT_receive (s->client,
+ &handle_search_response, s,
+ GNUNET_TIME_UNIT_FOREVER_REL);
+ pid = &result->id;
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Got regex result %s\n",
+ GNUNET_i2s (pid));
+ s->callback (s->callback_cls,
+ pid,
+ &pid[1], gpl,
+ &pid[1 + gpl], ppl);
+ return;
+ }
+ }
+ GNUNET_break (0);
+ GNUNET_CLIENT_disconnect (s->client);
+ s->client = GNUNET_CLIENT_connect ("regex", s->cfg);
+ retry_search (s);
+}
+
+
+/**
+ * Search for a peer offering a regex matching certain string in the DHT.
+ * The search runs until #GNUNET_REGEX_search_cancel() is called, even if
results
+ * are returned.
+ *
+ * @param cfg configuration to use
+ * @param string String to match against the regexes in the DHT.
+ * @param callback Callback for found peers.
+ * @param callback_cls Closure for @c callback.
+ * @return Handle to stop search and free resources.
+ * Must be freed by calling #GNUNET_REGEX_search_cancel().
+ */
+struct GNUNET_REGEX_Search *
+GNUNET_REGEX_search (const struct GNUNET_CONFIGURATION_Handle *cfg,
+ const char *string,
+ GNUNET_REGEX_Found callback,
+ void *callback_cls)
+{
+ struct GNUNET_REGEX_Search *s;
+ size_t slen;
+
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Starting regex search for %s\n",
+ string);
+ slen = strlen (string) + 1;
+ s = GNUNET_new (struct GNUNET_REGEX_Search);
+ s->cfg = cfg;
+ s->client = GNUNET_CLIENT_connect ("regex", cfg);
+ if (NULL == s->client)
+ {
+ GNUNET_free (s);
+ return NULL;
+ }
+ s->callback = callback;
+ s->callback_cls = callback_cls;
+ s->msg = GNUNET_malloc (sizeof (struct RegexSearchMessage) + slen);
+ s->msg->header.type = htons (GNUNET_MESSAGE_TYPE_REGEX_SEARCH);
+ s->msg->header.size = htons (sizeof (struct RegexSearchMessage) + slen);
+ memcpy (&s->msg[1], string, slen);
+ retry_search (s);
+ return s;
+}
+
+
+/**
+ * Stop search and free all data used by a #GNUNET_REGEX_search() call.
+ *
+ * @param s Handle returned by a previous #GNUNET_REGEX_search() call.
+ */
+void
+GNUNET_REGEX_search_cancel (struct GNUNET_REGEX_Search *s)
+{
+ GNUNET_CLIENT_disconnect (s->client);
+ GNUNET_free (s->msg);
+ GNUNET_free (s);
+}
+
+
+/* end of regex_api.c */
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