2 This file is part of GNUnet.
3 (C) 2003, 2004, 2006, 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.
22 * @file fs/fs_list_indexed.c
23 * @author Christian Grothoff
24 * @brief provide a list of all indexed files
28 #include "gnunet_constants.h"
29 #include "gnunet_fs_service.h"
30 #include "gnunet_protocols.h"
35 * Context for "GNUNET_FS_get_indexed_files".
37 struct GetIndexedContext
40 * Handle to global FS context.
42 struct GNUNET_FS_Handle *h;
45 * Connection to the FS service.
47 struct GNUNET_CLIENT_Connection *client;
50 * Function to call for each indexed file.
52 GNUNET_FS_IndexedFileProcessor iterator;
55 * Closure for iterator.
60 * Continuation to trigger at the end.
62 GNUNET_SCHEDULER_Task cont;
72 * Function called on each response from the FS
73 * service with information about indexed files.
75 * @param cls closure (of type "struct GetIndexedContext*")
76 * @param msg message with indexing information
79 handle_index_info (void *cls,
80 const struct GNUNET_MessageHeader *msg)
82 struct GetIndexedContext *gic = cls;
83 const struct IndexInfoMessage *iim;
89 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
90 _("Failed to receive response for `%s' request from `%s' service.\n"),
93 GNUNET_SCHEDULER_add_continuation (gic->h->sched,
96 GNUNET_SCHEDULER_REASON_TIMEOUT);
97 GNUNET_CLIENT_disconnect (gic->client, GNUNET_NO);
101 if (ntohs (msg->type) == GNUNET_MESSAGE_TYPE_FS_INDEX_LIST_END)
103 /* normal end-of-list */
104 GNUNET_SCHEDULER_add_continuation (gic->h->sched,
107 GNUNET_SCHEDULER_REASON_PREREQ_DONE);
108 GNUNET_CLIENT_disconnect (gic->client, GNUNET_NO);
112 msize = ntohs (msg->size);
113 iim = (const struct IndexInfoMessage*) msg;
114 filename = (const char*) &iim[1];
115 if ( (ntohs (msg->type) != GNUNET_MESSAGE_TYPE_FS_INDEX_LIST_ENTRY) ||
116 (msize <= sizeof (struct IndexInfoMessage)) ||
117 (filename[msize-sizeof (struct IndexInfoMessage) -1] != '\0') )
120 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
121 _("Failed to receive valid response for `%s' request from `%s' service.\n"),
124 GNUNET_SCHEDULER_add_continuation (gic->h->sched,
127 GNUNET_SCHEDULER_REASON_TIMEOUT);
128 GNUNET_CLIENT_disconnect (gic->client, GNUNET_NO);
133 gic->iterator (gic->iterator_cls,
137 GNUNET_SCHEDULER_add_continuation (gic->h->sched,
140 GNUNET_SCHEDULER_REASON_PREREQ_DONE);
141 GNUNET_CLIENT_disconnect (gic->client, GNUNET_NO);
146 GNUNET_CLIENT_receive (gic->client,
149 GNUNET_CONSTANTS_SERVICE_TIMEOUT);
154 * Iterate over all indexed files.
156 * @param h handle to the file sharing subsystem
157 * @param iterator function to call on each indexed file
158 * @param iterator_cls closure for iterator
159 * @param cont continuation to call when done;
160 * reason should be "TIMEOUT" (on
161 * error) or "PREREQ_DONE" (on success)
162 * @param cont_cls closure for cont
165 GNUNET_FS_get_indexed_files (struct GNUNET_FS_Handle *h,
166 GNUNET_FS_IndexedFileProcessor iterator,
168 GNUNET_SCHEDULER_Task cont,
171 struct GNUNET_CLIENT_Connection *client;
172 struct GetIndexedContext *gic;
173 struct GNUNET_MessageHeader msg;
175 client = GNUNET_CLIENT_connect (h->sched,
180 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
181 _("Failed to not connect to `%s' service.\n"),
183 GNUNET_SCHEDULER_add_continuation (h->sched,
186 GNUNET_SCHEDULER_REASON_TIMEOUT);
190 gic = GNUNET_malloc (sizeof (struct GetIndexedContext));
192 gic->client = client;
193 gic->iterator = iterator;
194 gic->iterator_cls = iterator_cls;
196 gic->cont_cls = cont_cls;
197 msg.size = htons (sizeof (struct GNUNET_MessageHeader));
198 msg.type = htons (GNUNET_MESSAGE_TYPE_FS_INDEX_LIST_GET);
199 GNUNET_assert (GNUNET_OK ==
200 GNUNET_CLIENT_transmit_and_get_response (client,
202 GNUNET_CONSTANTS_SERVICE_TIMEOUT,
208 /* end of fs_list_indexed.c */